/* roulang page: index */
:root{
  --c-bg-0:#050A16;
  --c-bg-1:#091127;
  --c-bg-2:#0E1A38;
  --c-brand:#2A6BFF;
  --c-brand-deep:#1B44C4;
  --c-glow:#3FE0FF;
  --c-accent:#FF7A3D;
  --c-ok:#35E0A1;
  --t-1:#EDF3FF;
  --t-2:#A6B8D4;
  --t-3:#6E82A0;
  --line:rgba(96,164,255,.18);
  --line-soft:rgba(96,164,255,.12);
  --glass:rgba(16,34,66,.52);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --shadow-card:0 18px 48px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 0 0 1px rgba(63,224,255,.35), 0 10px 30px rgba(42,107,255,.28);
  --maxw:1200px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--t-1);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border-radius:0;}
a{color:var(--c-glow);text-decoration:none;transition:color .2s ease,border-color .2s ease,opacity .2s ease;}
a:hover{color:#8ff0ff;}
h1,h2,h3,h4{margin:0;color:var(--t-1);letter-spacing:-.01em;}
h1{font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.22;}
h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.3;}
h3{font-size:20px;font-weight:700;line-height:1.4;}
h4{font-size:17px;font-weight:600;line-height:1.5;}
p{margin:0 0 1em;color:var(--t-2);}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.num,.mono{font-variant-numeric:tabular-nums;font-family:var(--mono);letter-spacing:.02em;}
::selection{background:rgba(42,107,255,.4);color:#fff;}
:focus-visible{outline:2px solid var(--c-glow);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;position:relative;}
.section--alt{background:var(--c-bg-1);}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head p{font-size:15px;margin-top:14px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-glow);margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--c-glow);display:inline-block;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.link-more{font-size:14px;font-weight:600;color:var(--c-glow);white-space:nowrap;}
.link-more::after{content:" →";}

/* ===== 按钮 ===== */
.button,.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:12px 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.02em;
  cursor:pointer;transition:transform .2s ease,box-shadow .24s ease,background .24s ease,border-color .24s ease,color .2s ease;
  text-align:center;margin:0;
}
.btn--primary,.button.btn--primary{
  background:linear-gradient(90deg,#2A6BFF 0%,#1B44C4 100%);
  color:#fff;box-shadow:var(--shadow-glow);
}
.btn--primary:hover,.button.btn--primary:hover{
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(63,224,255,.5), 0 14px 38px rgba(42,107,255,.42);
  color:#fff;
}
.btn--ghost,.button.btn--ghost{
  background:rgba(255,255,255,.02);
  border-color:var(--line);
  color:var(--t-1);
}
.btn--ghost:hover,.button.btn--ghost:hover{
  border-color:rgba(63,224,255,.55);
  color:var(--c-glow);
  background:rgba(63,224,255,.06);
}
.btn--sm{min-height:40px;padding:9px 18px;font-size:14px;border-radius:10px;}

/* ===== 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:rgba(42,107,255,.16);
  border:1px solid rgba(96,164,255,.28);
  color:#9dc0ff;
}
.badge--accent{background:rgba(255,122,61,.14);border-color:rgba(255,122,61,.4);color:#ffb187;}
.badge--ok{background:rgba(53,224,161,.12);border-color:rgba(53,224,161,.35);color:#7ff0c4;}

/* ===== 玻璃面板 ===== */
.glass{
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,.22);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:64px;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(9,17,39,.86);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(63,224,255,.28);
  box-shadow:0 12px 34px rgba(0,0,0,.42);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 24px;height:100%;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0;}
.brand{display:flex;align-items:center;gap:10px;color:var(--t-1);flex-shrink:0;}
.brand:hover{color:var(--t-1);}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  background:linear-gradient(140deg,#2A6BFF,#3FE0FF);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(42,107,255,.4);
  flex-shrink:0;
}
.brand-mark svg{width:18px;height:18px;stroke:#03122b;fill:none;stroke-width:1.5;}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  padding:8px 12px;font-size:14px;font-weight:500;color:var(--t-2);
  border-radius:8px;white-space:nowrap;
}
.nav-link:hover{color:var(--t-1);}
.nav-link.is-active{color:#fff;font-weight:700;}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;
  background:var(--c-glow);border-radius:2px;
  box-shadow:0 0 10px rgba(63,224,255,.8);
}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--t-2);cursor:pointer;transition:all .2s ease;
}
.icon-btn:hover{color:var(--c-glow);border-color:rgba(63,224,255,.5);}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;}
.nav-toggle{display:none;}

/* ===== 抽屉 ===== */
.drawer{
  position:fixed;inset:0;z-index:200;
  background:#040914;
  padding:20px 22px 0;
  display:flex;flex-direction:column;
  transform:translateX(100%);
  transition:transform .3s ease;
  visibility:hidden;
}
.drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:44px;margin-bottom:20px;}
.drawer-links{display:flex;flex-direction:column;gap:2px;flex:1;overflow-y:auto;padding-bottom:20px;}
.drawer-links a{
  font-size:18px;color:var(--t-1);padding:15px 0;
  border-bottom:1px solid var(--line-soft);font-weight:600;
}
.drawer-links a.is-active{color:var(--c-glow);}
.drawer-foot{
  position:sticky;bottom:0;padding:16px 0 22px;background:#040914;
  border-top:1px solid var(--line-soft);
}
.drawer-foot .btn{width:100%;}

/* ===== Hero ===== */
.hero{
  position:relative;
  padding:130px 0 88px;
  overflow:hidden;
  background:
    radial-gradient(900px 520px at 78% 18%, rgba(42,107,255,.22), transparent 68%),
    linear-gradient(180deg,#050A16 0%,#071026 62%,#050A16 100%);
}
.hero__bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.16;filter:saturate(.7);
  pointer-events:none;
}
.hero__speed{
  position:absolute;right:-10%;top:38%;width:56%;height:180px;
  background:repeating-linear-gradient(100deg,rgba(63,224,255,.16) 0 1px,transparent 1px 26px);
  opacity:.35;transform:rotate(-8deg);pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.hero-copy h1{margin-bottom:18px;}
.hero-copy h1 span{
  display:block;
  background:linear-gradient(96deg,#3FE0FF,#2A6BFF 70%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--t-2);max-width:540px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  font-size:13px;color:var(--t-3);font-variant-numeric:tabular-nums;
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px;}
.hero-meta i{width:5px;height:5px;border-radius:50%;background:var(--c-ok);display:inline-block;font-style:normal;}

.hero-panel{
  position:relative;
  padding:16px;
  border-radius:var(--r-card);
  border:1px solid rgba(96,164,255,.24);
  background:rgba(16,34,66,.52);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  clip-path:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px);
}
.hero-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;border-radius:var(--r-card);
  background:radial-gradient(420px 260px at 50% 108%, rgba(42,107,255,.55), transparent 72%);
  opacity:.6;
}
.hero-panel__shot{
  position:relative;z-index:2;
  border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);
  background:var(--c-bg-2);
}
.hero-panel__shot img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-panel__row{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  margin-top:14px;padding:0 4px;
}
.hero-panel__row span{font-size:13px;color:var(--t-3);}
.float-card{
  position:absolute;right:22px;bottom:74px;z-index:5;
  padding:14px 18px;border-radius:14px;
  background:rgba(9,17,39,.92);
  border:1px solid rgba(63,224,255,.34);
  box-shadow:0 14px 34px rgba(0,0,0,.5);
  text-align:left;
}
.float-card b{display:block;font-size:22px;font-weight:800;color:var(--c-glow);font-variant-numeric:tabular-nums;line-height:1.2;}
.float-card small{font-size:12px;color:var(--t-3);}

/* ===== 价值编号条 ===== */
.value-grid{display:grid;grid-template-columns:8fr 4fr;gap:40px;align-items:start;}
.value-list{border-top:1px solid var(--line-soft);}
.value-item{
  position:relative;
  display:grid;grid-template-columns:56px 46px 1fr;align-items:flex-start;gap:18px;
  padding:24px 18px 24px 0;
  border-bottom:1px solid var(--line-soft);
  transition:background .22s ease;
}
.value-item::before{
  content:"";position:absolute;left:-18px;top:14px;bottom:14px;width:3px;
  background:var(--c-glow);border-radius:3px;opacity:0;transition:opacity .22s ease;
}
.value-item:hover::before{opacity:1;}
.value-item:hover{background:rgba(63,224,255,.035);}
.value-num{font-size:15px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;padding-top:3px;}
.value-ico{
  width:46px;height:46px;border-radius:13px;
  border:1px solid var(--line);background:rgba(42,107,255,.12);
  display:flex;align-items:center;justify-content:center;
}
.value-ico svg{width:21px;height:21px;stroke:var(--c-glow);fill:none;stroke-width:1.5;}
.value-body h3{font-size:19px;margin-bottom:6px;}
.value-body p{font-size:14.5px;margin:0;color:var(--t-2);}

.stat-card{padding:30px 26px;}
.stat-card h3{font-size:18px;margin-bottom:6px;}
.stat-card>p{font-size:14px;margin-bottom:24px;}
.stat-row{
  display:flex;align-items:baseline;justify-content:space-between;
  padding:16px 0;border-top:1px solid var(--line-soft);
}
.stat-row b{font-size:28px;font-weight:800;color:#fff;font-variant-numeric:tabular-nums;}
.stat-row b em{font-size:14px;font-style:normal;color:var(--t-3);margin-left:4px;font-weight:600;}
.stat-row span{font-size:13px;color:var(--t-3);}

/* ===== Orbit 截图 ===== */
.shots .orbit{border-radius:var(--r-card);}
.shots .orbit-container{border-radius:var(--r-card);}
.shots .orbit-slide{
  background:transparent;
}
.shot{
  margin:0;padding:16px;border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,.22);
  box-shadow:var(--shadow-card);
}
.shot img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);}
.shot figcaption{display:flex;align-items:baseline;gap:12px;padding:16px 6px 4px;flex-wrap:wrap;}
.shot figcaption strong{font-size:15px;font-weight:700;color:var(--t-1);}
.shot figcaption span{font-size:13.5px;color:var(--t-3);}
.shots .orbit-bullets{display:flex;justify-content:center;gap:10px;margin-top:24px;}
.shots .orbit-bullets button{
  width:8px;height:8px;min-width:0;padding:0;border-radius:var(--r-pill);
  background:rgba(166,184,212,.3);border:0;transition:all .25s ease;text-indent:-9999px;overflow:hidden;
}
.shots .orbit-bullets button.is-active{width:24px;background:var(--c-glow);box-shadow:0 0 12px rgba(63,224,255,.7);}
.shots .orbit-next,.shots .orbit-previous{
  width:44px;height:44px;border-radius:50%;
  background:rgba(9,17,39,.85);border:1px solid rgba(63,224,255,.45);
  color:var(--c-glow);display:flex;align-items:center;justify-content:center;
  top:50%;transform:translateY(-50%);
}
.shots .orbit-next{right:22px;}
.shots .orbit-previous{left:22px;}
.shots .orbit-next:hover,.shots .orbit-previous:hover{background:rgba(63,224,255,.16);}

/* ===== Tabs 系统要求 ===== */
.spec-tabs{border:0;background:transparent;display:flex;gap:10px;margin-bottom:0;}
.spec-tabs .tabs-title{float:none;}
.spec-tabs .tabs-title>a{
  display:block;padding:11px 24px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;color:var(--t-2);
  background:rgba(255,255,255,.03);border:1px solid var(--line);
  transition:all .22s ease;
}
.spec-tabs .tabs-title>a:hover{color:var(--t-1);border-color:rgba(63,224,255,.45);}
.spec-tabs .tabs-title.is-active>a{
  background:linear-gradient(90deg,#2A6BFF,#1B44C4);color:#fff;
  border-color:transparent;box-shadow:0 8px 24px rgba(42,107,255,.3);
}
.spec-panel{padding:28px 30px;margin-top:22px;}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:52px;border-bottom:1px solid var(--line-soft);
}
.spec-row:last-child{border-bottom:0;}
.spec-row dt{font-size:14.5px;color:var(--t-2);display:flex;align-items:center;gap:10px;margin:0;}
.spec-row dd{margin:0;font-size:14.5px;color:var(--t-1);font-variant-numeric:tabular-nums;font-family:var(--mono);}
.dot{width:7px;height:7px;border-radius:50%;display:inline-block;flex-shrink:0;}
.dot--ok{background:var(--c-ok);box-shadow:0 0 8px rgba(53,224,161,.8);}
.dot--no{background:#3a4a66;}
.spec-note{font-size:13.5px;color:var(--t-3);margin-top:18px;}

/* ===== 评价墙 ===== */
.reviews-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.reviews-col{display:flex;flex-direction:column;gap:24px;}
.reviews-col--offset{margin-top:24px;}
.review-card{
  padding:26px;border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,.2);
  box-shadow:var(--shadow-card);
  transition:transform .24s ease,border-color .24s ease;
}
.review-card:hover{transform:translateY(-4px);border-color:rgba(63,224,255,.5);}
.review-top{display:flex;align-items:center;gap:14px;margin-bottom:16px;}
.avatar{
  width:52px;height:52px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(140deg,#1B44C4,#3FE0FF);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:800;color:#04122e;
}
.review-name{font-size:15px;font-weight:700;color:var(--t-1);line-height:1.4;}
.review-stars{display:flex;gap:4px;margin-top:4px;}
.review-stars i{width:6px;height:6px;border-radius:50%;background:var(--c-glow);display:block;box-shadow:0 0 8px rgba(63,224,255,.7);}
.review-card p{font-size:14.5px;color:var(--t-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0;}
.reviews-more{display:none;margin-top:26px;text-align:center;}

/* ===== 下载按钮组 ===== */
.dl-wrap{
  position:relative;
  display:grid;grid-template-columns:1fr 190px;gap:34px;align-items:center;
  padding:38px;border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,.22);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.dl-wrap::before{
  content:"";position:absolute;left:0;bottom:12px;width:56%;height:1px;
  background:linear-gradient(90deg,rgba(63,224,255,.55),transparent);
}
.dl-buttons{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.dl-btn{
  display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:4px;
  min-height:64px;padding:14px 20px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--t-1);text-align:left;cursor:pointer;
  transition:all .24s ease;
}
.dl-btn:hover{transform:translateY(-2px);border-color:rgba(63,224,255,.6);color:var(--t-1);}
.dl-btn .dl-name{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;}
.dl-btn .dl-name svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;}
.dl-btn .dl-sub{font-size:12.5px;color:var(--t-3);font-variant-numeric:tabular-nums;font-family:var(--mono);}
.dl-btn--main{
  background:linear-gradient(90deg,#2A6BFF,#1B44C4);
  border-color:transparent;box-shadow:var(--shadow-glow);
  animation:breathe 3s ease-in-out infinite;
}
.dl-btn--main .dl-sub{color:rgba(255,255,255,.78);}
.dl-btn--main:hover{color:#fff;box-shadow:0 0 0 1px rgba(63,224,255,.55),0 16px 42px rgba(42,107,255,.45);}
@keyframes breathe{0%,100%{opacity:1;}50%{opacity:.9;}}
.qr-card{text-align:center;}
.qr-box{
  width:120px;height:120px;margin:0 auto 12px;border-radius:14px;
  background:
    repeating-linear-gradient(90deg,#0b1732 0 6px,#132a55 6px 12px),
    var(--c-bg-2);
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.qr-box span{
  position:relative;z-index:2;font-size:12px;font-weight:700;color:#cfe4ff;
  background:rgba(5,10,22,.82);padding:4px 10px;border-radius:var(--r-pill);
  border:1px solid rgba(63,224,255,.35);
}
.qr-card small{display:block;font-size:12.5px;color:var(--t-3);}

/* ===== 最新信息 ===== */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:26px;align-items:start;}
.news-feature{
  display:block;border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,.2);
  box-shadow:var(--shadow-card);
  transition:transform .24s ease,border-color .24s ease;
}
.news-feature:hover{transform:translateY(-4px);border-color:rgba(63,224,255,.5);}
.news-feature__media{
  aspect-ratio:16/9;background-size:cover;background-position:center;
  background-color:var(--c-bg-2);border-bottom:1px solid var(--line-soft);
}
.news-feature__body{padding:24px 26px 28px;}
.news-feature__body h3{font-size:22px;margin:14px 0 10px;transition:color .2s ease;}
.news-feature:hover h3{color:var(--c-glow);}
.news-feature__body p{
  font-size:14.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--t-3);font-variant-numeric:tabular-nums;margin-top:16px;}
.news-list{display:flex;flex-direction:column;gap:16px;}
.news-item{
  display:grid;grid-template-columns:70px 1fr;gap:18px;align-items:start;
  padding:20px 22px;border-radius:16px;
  background:rgba(255,255,255,.025);
  border:1px solid var(--line-soft);
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.news-item:hover{transform:translateY(-3px);border-color:rgba(63,224,255,.45);background:rgba(63,224,255,.05);}
.news-item time{
  display:block;padding:8px 0;border-radius:10px;text-align:center;
  background:rgba(42,107,255,.16);border:1px solid rgba(96,164,255,.24);
  font-size:12.5px;color:#9dc0ff;font-variant-numeric:tabular-nums;font-family:var(--mono);line-height:1.5;
}
.news-item h3{font-size:16.5px;margin-bottom:6px;transition:color .2s ease;}
.news-item:hover h3{color:var(--c-glow);}
.news-item p{font-size:13.5px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.empty-state{
  padding:56px 28px;text-align:center;border-radius:var(--r-card);
  border:1px dashed rgba(96,164,255,.3);background:rgba(16,34,66,.35);
}
.empty-state svg{width:36px;height:36px;stroke:var(--t-3);fill:none;stroke-width:1.5;margin:0 auto 14px;}
.empty-state p{font-size:14.5px;margin-bottom:18px;}

/* ===== FAQ ===== */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-intro{position:sticky;top:96px;}
.faq-intro p{font-size:15px;margin-top:16px;}
.accordion{border:0;background:transparent;}
.accordion .accordion-item{
  border:1px solid var(--line-soft);border-radius:14px;margin-bottom:12px;
  background:rgba(255,255,255,.022);overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.accordion .accordion-item.is-active{border-color:rgba(63,224,255,.42);background:rgba(63,224,255,.045);}
.accordion .accordion-title{
  position:relative;
  border:0;padding:20px 58px 20px 22px;
  font-size:16px;font-weight:600;color:var(--t-1);line-height:1.5;background:transparent;
}
.accordion .accordion-title:hover{background:rgba(63,224,255,.05);color:var(--c-glow);}
.accordion .accordion-title::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--c-glow);border-radius:3px;opacity:0;transition:opacity .22s ease;
}
.accordion .accordion-item.is-active .accordion-title::before{opacity:1;}
.accordion .accordion-title::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--c-glow);line-height:1;
  transition:transform .24s ease;
}
.accordion .accordion-item.is-active .accordion-title::after{content:"−";transform:translateY(-50%) rotate(0deg);}
.accordion .accordion-content{
  border:0;padding:0 22px 22px 22px;background:transparent;
  color:var(--t-2);font-size:15.5px;line-height:1.85;
}

/* ===== CTA 条 ===== */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:32px 36px;border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,.24);
  box-shadow:var(--shadow-card);
}
.cta-bar h2{font-size:24px;margin-bottom:6px;}
.cta-bar p{font-size:14.5px;margin:0;}
.cta-bar .btn{flex-shrink:0;}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--c-bg-0);
  border-top:1px solid rgba(63,224,255,.28);
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:13.5px;color:var(--t-3);max-width:300px;}
.footer-contact{margin-top:18px;font-size:13.5px;color:var(--t-2);font-variant-numeric:tabular-nums;}
.footer-contact span{display:block;margin-bottom:6px;}
.fcol h4{
  font-size:14px;font-weight:700;margin-bottom:18px;position:relative;padding-left:12px;
}
.fcol h4::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;
  background:var(--c-glow);border-radius:2px;
}
.fcol ul li{margin-bottom:10px;}
.fcol ul a{font-size:13.5px;color:var(--t-2);}
.fcol ul a:hover{color:var(--c-glow);}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line-soft);
  text-align:center;font-size:13px;color:var(--t-3);
}
.footer-bottom span{margin:0 10px;}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .container{padding:0 20px;}
  .nav-inner{padding:0 20px;}
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-right .btn{display:none;}
  .section{padding:64px 0;}
  .hero{padding:110px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:38px;}
  .hero-panel__shot img{aspect-ratio:16/9;}
  .value-grid{grid-template-columns:1fr;gap:28px;}
  .news-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .faq-intro{position:static;}
  .dl-wrap{grid-template-columns:1fr;}
  .dl-buttons{grid-template-columns:1fr;}
  .qr-card{text-align:left;display:flex;align-items:center;gap:16px;}
  .qr-box{margin:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;}
  .site-header{height:56px;}
  .brand-text{font-size:16px;}
  .brand-mark{width:28px;height:28px;border-radius:9px;}
  .section{padding:48px 0;}
  .hero{padding:92px 0 48px;}
  .hero__speed{display:none;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .hero-panel{clip-path:none;padding:12px;}
  .hero-panel__shot img{aspect-ratio:16/10;max-height:260px;object-fit:cover;}
  .float-card{right:12px;bottom:56px;padding:10px 14px;}
  .float-card b{font-size:18px;}
  .value-item{grid-template-columns:44px 1fr;gap:14px;}
  .value-ico{display:none;}
  .value-num{padding-top:2px;}
  .reviews-grid{grid-template-columns:1fr;}
  .reviews-col--offset{margin-top:0;}
  .review-card.is-hidden-mobile{display:none;}
  .reviews-more{display:block;}
  .spec-tabs{flex-wrap:wrap;}
  .spec-tabs .tabs-title>a{padding:9px 18px;font-size:13.5px;}
  .spec-panel{padding:20px;}
  .spec-row{flex-direction:column;align-items:flex-start;gap:2px;padding:12px 0;min-height:0;}
  .dl-wrap{padding:24px 20px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 22px;}
  .cta-bar .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .news-item{grid-template-columns:1fr;gap:12px;}
  .news-item time{display:inline-block;padding:4px 12px;}
  .accordion .accordion-title{font-size:15.5px;padding:17px 50px 17px 18px;}
  .accordion .accordion-content{padding:0 18px 20px 18px;font-size:15px;}
  .shots .orbit-next,.shots .orbit-previous{display:none;}
  .section-head--row{flex-direction:column;align-items:flex-start;gap:12px;}
}

/* roulang page: article */
:root{
  --c-bg-0:#050A16;
  --c-bg-1:#091127;
  --c-bg-2:#0E1A38;
  --c-brand:#2A6BFF;
  --c-brand-deep:#1B44C4;
  --c-glow:#3FE0FF;
  --c-accent:#FF7A3D;
  --c-ok:#35E0A1;
  --t-1:#EDF3FF;
  --t-2:#A6B8D4;
  --t-3:#6E82A0;
  --glass:rgba(16,34,66,.52);
  --glass-line:rgba(96,164,255,.22);
  --line:rgba(96,164,255,.18);
  --line-soft:rgba(96,164,255,.12);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-input:10px;
  --sh-card:0 18px 48px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --sh-glow:0 0 0 1px rgba(63,224,255,.35), 0 10px 30px rgba(42,107,255,.28);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:64px;
  background:var(--c-bg-0);
  color:var(--t-1);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,opacity .22s ease}
a:hover{color:var(--c-glow)}
button{font-family:inherit}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em}
h1,h2,h3,h4{margin:0;color:var(--t-1);line-height:1.3}
:focus-visible{outline:2px solid var(--c-glow);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .24s ease,border-color .24s ease,backdrop-filter .24s ease;
}
.site-header.is-scrolled{
  background:rgba(5,10,22,.84);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:rgba(63,224,255,.24);
}
.nav-inner{
  max-width:var(--wrap);margin:0 auto;padding:0 24px;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-brand),var(--c-brand-deep));
  box-shadow:0 0 0 1px rgba(63,224,255,.35),0 6px 18px rgba(42,107,255,.3);
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:#EDF3FF;stroke-width:1.5}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.01em;color:var(--t-1)}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;padding:8px 11px;border-radius:8px;
  font-size:14.5px;color:var(--t-2);white-space:nowrap;
}
.nav-link:hover{color:#fff}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{
  content:"";position:absolute;left:11px;right:11px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-glow);box-shadow:0 0 10px rgba(63,224,255,.85);
}
.nav-right{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;cursor:pointer;
  border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--t-2);transition:.22s;
}
.icon-btn:hover{color:#fff;border-color:rgba(63,224,255,.5)}
.icon-btn svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.5}
.nav-toggle{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;cursor:pointer;
  border:1px solid transparent;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease;
}
.btn--primary{
  background:linear-gradient(90deg,#2A6BFF,#1B44C4);color:#fff;box-shadow:var(--sh-glow);
}
.btn--primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(63,224,255,.5),0 14px 38px rgba(42,107,255,.42)}
.btn--ghost{background:rgba(255,255,255,.03);border-color:var(--line);color:var(--t-1)}
.btn--ghost:hover{color:#fff;border-color:rgba(63,224,255,.5);transform:translateY(-1px)}
.btn--sm{height:40px;min-height:40px;padding:0 16px;font-size:14px}

/* ---------- drawer ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:90;display:none;flex-direction:column;
  background:rgba(5,10,22,.98);padding:22px 22px 28px;
}
.nav-drawer.is-open{display:flex}
.dr-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.dr-title{font-size:15px;color:var(--t-3);letter-spacing:.08em}
.dr-links{flex:1;overflow:auto;display:flex;flex-direction:column}
.dr-links a{
  font-size:18px;padding:15px 2px;color:var(--t-1);border-bottom:1px solid var(--line-soft);
}
.dr-links a:hover{color:var(--c-glow)}
.dr-foot{padding-top:20px}

/* ---------- breadcrumb ---------- */
.page-top{padding:34px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t-3)}
.crumb a{color:var(--t-2)}
.crumb a:hover{color:var(--c-glow)}
.crumb .sep{opacity:.45}
.crumb .cur{
  max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--t-3);
}

/* ---------- article head ---------- */
.article-head{padding:26px 0 0;max-width:940px}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 13px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.02em;
  background:rgba(255,122,61,.12);color:#FFB08A;border:1px solid rgba(255,122,61,.35);
}
.badge--ghost{background:rgba(63,224,255,.08);color:#9DEBFF;border-color:rgba(63,224,255,.3)}
.post-title{
  font-size:clamp(28px,4.4vw,46px);font-weight:800;line-height:1.24;letter-spacing:-.01em;
  margin:18px 0 20px;word-break:break-word;overflow-wrap:anywhere;
}
.post-meta{
  display:flex;flex-wrap:wrap;gap:20px;font-size:13.5px;color:var(--t-3);
  padding-bottom:24px;border-bottom:1px solid var(--line-soft);
}
.post-meta span{display:inline-flex;align-items:center;gap:7px}
.post-meta svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.5}

/* ---------- article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:52px;align-items:start;
  padding:36px 0 0;
}
.content-col{min-width:0}
.article-body{max-width:820px;color:#DCE6F8;font-size:16px;line-height:1.85}
.article-body>*:first-child{margin-top:0}
.article-body h2{font-size:clamp(22px,2.6vw,26px);font-weight:700;margin:40px 0 16px;line-height:1.35}
.article-body h3{font-size:19px;font-weight:700;margin:28px 0 12px}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--t-2)}
.article-body p{margin:0 0 1em}
.article-body blockquote{
  margin:26px 0;padding:18px 24px;color:var(--t-2);
  background:var(--c-bg-2);border-left:4px solid var(--c-glow);border-radius:0 14px 14px 0;
  box-shadow:0 0 24px rgba(63,224,255,.08);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul{padding-left:0;list-style:none}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:9px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--c-glow);box-shadow:0 0 8px rgba(63,224,255,.85);
}
.article-body ol{padding-left:22px}
.article-body ol li{margin-bottom:9px}
.article-body img{margin:22px 0 10px;border-radius:var(--r-img);border:1px solid var(--line-soft)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13.5px;color:var(--t-3);margin-top:8px}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:14px;
  background:var(--c-bg-2);color:#9DEBFF;padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:var(--c-bg-2);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;padding:0;color:#CFE4FF}
.article-body a{color:var(--c-glow);border-bottom:1px solid rgba(63,224,255,.35)}
.article-body a:hover{border-bottom-color:var(--c-glow)}
.article-body table{
  width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;
  background:rgba(14,26,56,.6);border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line-soft)}
.article-body th{color:var(--t-2);font-weight:600;background:rgba(16,34,66,.7)}
.article-body tr:last-child td{border-bottom:none}
.article-body hr{border:none;border-top:1px solid var(--line-soft);margin:32px 0}

.article-empty{
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-card);
  padding:52px 28px;text-align:center;box-shadow:var(--sh-card);
}
.article-empty svg{width:44px;height:44px;fill:none;stroke:var(--c-glow);stroke-width:1.5;margin:0 auto 16px}
.article-empty h2{font-size:20px;font-weight:700;margin-bottom:8px}
.article-empty p{color:var(--t-2);margin-bottom:20px}

/* ---------- article tail ---------- */
.tags{display:flex;flex-wrap:wrap;gap:10px;margin:40px 0 0}
.tag{
  padding:6px 13px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);font-size:13px;color:var(--t-2);
}
.tag:hover{border-color:rgba(63,224,255,.5);color:#fff}
.dl-card{
  margin-top:34px;padding:26px 28px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--glass-line);box-shadow:var(--sh-card);
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
}
.dl-card h3{font-size:19px;font-weight:700;margin-bottom:6px}
.dl-card p{color:var(--t-2);font-size:14.5px;margin:0}

/* ---------- sidebar ---------- */
.side{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px}
.side-card{
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-card);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
}
.side-card h3{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--c-glow);box-shadow:0 0 10px rgba(63,224,255,.8)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{border-bottom:1px dashed var(--line-soft)}
.side-list li:last-child{border-bottom:none}
.side-list a{display:flex;gap:10px;padding:11px 0;font-size:14px;color:var(--t-2);line-height:1.6}
.side-list a:hover{color:var(--c-glow)}
.side-list .idx{
  font-variant-numeric:tabular-nums;color:var(--c-accent);font-weight:700;font-size:13px;flex:0 0 auto;
}
.side-note{font-size:13.5px;color:var(--t-3);line-height:1.75}

/* ---------- related ---------- */
.related{margin-top:60px;padding-top:40px;border-top:1px solid var(--line-soft)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:26px}
.sec-head h2{font-size:clamp(22px,2.6vw,28px);font-weight:700}
.sec-head a{font-size:14px;color:var(--t-2)}
.sec-head a:hover{color:var(--c-glow)}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{
  display:block;background:var(--c-bg-1);border:1px solid var(--line-soft);border-radius:var(--r-card);
  overflow:hidden;transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(63,224,255,.4);box-shadow:0 18px 44px rgba(0,0,0,.5)}
.rel-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-2)}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.rel-body{padding:18px 20px 22px}
.rel-body h3{font-size:16.5px;font-weight:700;line-height:1.5;margin-bottom:8px;transition:color .22s}
.rel-card:hover .rel-body h3{color:var(--c-glow)}
.rel-body p{font-size:14px;color:var(--t-2);margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--t-3);font-variant-numeric:tabular-nums}

.back-link{
  display:inline-flex;align-items:center;gap:9px;margin-top:36px;
  font-size:14.5px;color:var(--t-2);
}
.back-link svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6;transition:transform .22s}
.back-link:hover{color:var(--c-glow)}
.back-link:hover svg{transform:translateX(3px)}

/* ---------- cta band ---------- */
.cta-band{
  margin:76px 0 0;padding:30px 34px;border-radius:var(--r-card);
  background:linear-gradient(90deg,rgba(16,34,66,.72),rgba(9,17,39,.72));
  border:1px solid var(--glass-line);box-shadow:var(--sh-card);
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-40px;width:280px;height:180px;
  background:radial-gradient(circle at 60% 40%,rgba(42,107,255,.35),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:22px;font-weight:700;margin-bottom:6px}
.cta-band p{color:var(--t-2);font-size:14.5px;margin:0}

/* ---------- footer ---------- */
.site-footer{
  margin-top:88px;background:var(--c-bg-0);border-top:1px solid rgba(63,224,255,.22);
  padding:66px 0 26px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(63,224,255,.55),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.fcol h4{
  font-size:14px;font-weight:700;margin-bottom:18px;position:relative;padding-left:12px;color:var(--t-1);
}
.fcol h4::before{content:"";position:absolute;left:0;top:6px;width:2px;height:13px;background:var(--c-brand);border-radius:2px}
.fcol ul{list-style:none;margin:0;padding:0}
.fcol li{margin-bottom:11px}
.fcol a{font-size:14px;color:var(--t-2)}
.fcol a:hover{color:var(--c-glow)}
.footer-brand p{font-size:14px;color:var(--t-3);margin:16px 0 14px;max-width:330px;line-height:1.8}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:13.5px;color:var(--t-3)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:center;
  font-size:13px;color:var(--t-3);
}
.footer-bottom span{white-space:nowrap}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  body{padding-top:56px}
  .nav-inner{height:56px;padding:0 20px}
  .nav-menu{display:none}
  .nav-toggle{display:grid}
  .brand-text{font-size:18px}
  .container{padding:0 20px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .side{position:static}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-band{margin-top:60px}
  .site-footer{margin-top:66px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .nav-inner{padding:0 16px}
  .nav-right .btn--sm{display:none}
  .page-top{padding-top:24px}
  .post-meta{gap:14px}
  .article-body{font-size:15.5px}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .dl-card{padding:22px}
  .cta-band{padding:24px}
  .cta-band .btn{width:100%}
  .site-footer{padding-top:48px}
  .footer-bottom{justify-content:flex-start}
}

/* roulang page: category1 */
:root{
  --c-bg-0:#050A16;
  --c-bg-1:#091127;
  --c-bg-2:#0E1A38;
  --c-brand:#2A6BFF;
  --c-brand-deep:#1B44C4;
  --c-glow:#3FE0FF;
  --c-accent:#FF7A3D;
  --c-ok:#35E0A1;
  --t-1:#EDF3FF;
  --t-2:#A6B8D4;
  --t-3:#6E82A0;
  --line:rgba(96,164,255,0.18);
  --line-soft:rgba(96,164,255,0.12);
  --glass:rgba(16,34,66,0.52);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --shadow-card:0 18px 48px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.06);
  --shadow-glow:0 0 0 1px rgba(63,224,255,0.35), 0 10px 30px rgba(42,107,255,0.28);
  --w:1200px;
  --nav-h:64px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--t-1);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--c-glow);}
button{font-family:inherit;}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--t-1);letter-spacing:-0.01em;}
ul{margin:0;padding:0;list-style:none;}
svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.5;display:block;}
:focus-visible{outline:2px solid var(--c-glow);outline-offset:3px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--alt{background:var(--c-bg-1);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,3vw,32px);}
.section-head p{margin:10px 0 0;color:var(--t-2);font-size:15px;max-width:640px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--c-glow);text-transform:uppercase;margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-glow);border-radius:2px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .24s ease, border-color .24s ease, box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(9,17,39,0.82);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(96,164,255,0.28);
  box-shadow:0 12px 34px rgba(0,0,0,0.45);
}
.nav-inner{
  max-width:var(--w);margin:0 auto;padding:0 24px;height:var(--nav-h);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.nav-left{display:flex;align-items:center;gap:34px;min-width:0;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;flex-shrink:0;border-radius:10px;
  display:grid;place-items:center;color:var(--c-glow);
  background:linear-gradient(140deg, rgba(42,107,255,0.30), rgba(63,224,255,0.10));
  border:1px solid rgba(96,164,255,0.32);
  box-shadow:inset 0 1px 0 rgba(255,255,255,0.08);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.01em;color:var(--t-1);white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:6px;min-width:0;}
.nav-link{
  position:relative;display:inline-block;padding:9px 12px;border-radius:10px;
  font-size:15px;color:var(--t-2);white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-glow);transform:scaleX(0);transform-origin:left;transition:transform .24s ease;
  box-shadow:0 0 10px rgba(63,224,255,0.7);
}
.nav-link:hover{color:var(--t-1);background:rgba(42,107,255,0.10);}
.nav-link.is-active{color:var(--t-1);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,0.04);border:1px solid var(--line);color:var(--t-2);
  cursor:pointer;transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.icon-btn svg{width:20px;height:20px;}
.icon-btn:hover{color:var(--c-glow);border-color:rgba(63,224,255,0.5);background:rgba(42,107,255,0.12);}
.nav-toggle{display:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{
  background:linear-gradient(90deg,#2A6BFF,#1B44C4);color:#fff;
  box-shadow:var(--shadow-glow);
}
.btn--primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(63,224,255,0.5),0 14px 40px rgba(42,107,255,0.42);}
.btn--ghost{background:rgba(255,255,255,0.03);border-color:rgba(96,164,255,0.34);color:var(--t-1);}
.btn--ghost:hover{color:var(--c-glow);border-color:rgba(63,224,255,0.6);background:rgba(42,107,255,0.10);}
.btn--sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn--lg{min-height:56px;padding:0 30px;font-size:16px;}

/* ---------- 抽屉菜单 ---------- */
.drawer{
  position:fixed;inset:0;z-index:80;background:#050A16;
  display:flex;flex-direction:column;padding:20px 20px 28px;
  transform:translateY(-12px);opacity:0;visibility:hidden;transition:opacity .24s ease,transform .24s ease,visibility .24s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.drawer-nav{display:flex;flex-direction:column;padding:14px 0;flex:1;overflow-y:auto;}
.drawer-nav a{
  font-size:18px;padding:15px 4px;color:var(--t-1);border-bottom:1px solid var(--line-soft);
}
.drawer-nav a.is-active{color:var(--c-glow);font-weight:700;}
.drawer-cta{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb-wrap{background:var(--c-bg-1);border-bottom:1px solid var(--line-soft);padding-top:var(--nav-h);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t-3);padding:16px 0;}
.breadcrumb a{color:var(--t-2);}
.breadcrumb a:hover{color:var(--c-glow);}
.breadcrumb .sep{color:var(--t-3);opacity:.6;}
.breadcrumb .current{color:var(--t-3);}

/* ---------- 小 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--c-bg-1);
  padding:52px 0 62px;
  border-bottom:1px solid var(--line-soft);
}
.page-hero::before{
  content:"";position:absolute;top:-180px;left:-140px;width:620px;height:620px;
  background:radial-gradient(circle,rgba(42,107,255,0.20),transparent 68%);
  pointer-events:none;
}
.page-hero .grid-x{align-items:center;}
.page-hero h1{font-size:clamp(28px,4.4vw,44px);font-weight:800;line-height:1.22;}
.page-hero .lead{color:var(--t-2);font-size:17px;max-width:560px;margin-top:16px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--t-2);background:rgba(255,255,255,0.04);border:1px solid var(--line);
}
.tag .dot{width:6px;height:6px;border-radius:50%;background:var(--c-ok);box-shadow:0 0 8px rgba(53,224,161,0.9);}
.tag--accent{color:var(--c-accent);border-color:rgba(255,122,61,0.4);background:rgba(255,122,61,0.10);}
.hero-visual{
  position:relative;border-radius:var(--r-card);overflow:hidden;min-height:280px;
  border:1px solid rgba(96,164,255,0.22);
  background:linear-gradient(160deg,rgba(16,34,66,0.7),rgba(5,10,22,0.6));
  box-shadow:var(--shadow-card);
}
.hero-visual img{width:100%;height:100%;min-height:280px;object-fit:cover;opacity:.92;}
.hero-visual .visual-label{
  position:absolute;left:18px;bottom:16px;right:18px;
  padding:14px 16px;border-radius:14px;
  background:rgba(9,17,39,0.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(96,164,255,0.28);
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.hero-visual .visual-label span{font-size:13px;color:var(--t-2);}
.hero-visual .visual-label strong{font-size:15px;font-weight:700;color:var(--t-1);}
.corner{position:absolute;width:16px;height:16px;border:1.5px solid rgba(63,224,255,0.7);}
.corner.tl{top:10px;left:10px;border-right:0;border-bottom:0;}
.corner.tr{top:10px;right:10px;border-left:0;border-bottom:0;}
.corner.bl{bottom:10px;left:10px;border-right:0;border-top:0;}
.corner.br{bottom:10px;right:10px;border-left:0;border-top:0;}

/* ---------- 宽幅大图 ---------- */
.spotlight{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  min-height:360px;display:flex;align-items:flex-end;
  border:1px solid rgba(96,164,255,0.22);box-shadow:var(--shadow-card);
}
.spotlight img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.spotlight .shade{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,22,0.20) 0%,rgba(5,10,22,0.86) 78%);
}
.spotlight .spot-body{position:relative;padding:40px;max-width:760px;}
.spotlight h2{font-size:clamp(22px,3vw,30px);margin-bottom:12px;}
.spotlight p{color:var(--t-2);font-size:15.5px;margin:0;}
.spot-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:26px;}
.spot-stats div{display:flex;flex-direction:column;gap:2px;}
.spot-stats b{font-size:26px;font-weight:800;color:var(--c-glow);font-variant-numeric:tabular-nums;}
.spot-stats small{font-size:13px;color:var(--t-3);}

/* ---------- 卡片矩阵 ---------- */
.card-grid{margin-top:8px;}
.card-grid .cell{margin-bottom:24px;}
.card{
  height:100%;padding:30px 28px;border-radius:var(--r-card);
  background:var(--glass);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,0.22);
  box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;gap:14px;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(63,224,255,0.5);box-shadow:0 24px 56px rgba(0,0,0,0.5),inset 0 1px 0 rgba(255,255,255,0.08);}
.card__icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;color:var(--c-glow);
  background:linear-gradient(140deg,rgba(42,107,255,0.26),rgba(63,224,255,0.08));
  border:1px solid rgba(96,164,255,0.3);
}
.card__icon svg{width:22px;height:22px;}
.card h3{font-size:20px;}
.card p{color:var(--t-2);font-size:15px;margin:0;}
.card--tall{padding:36px 30px;}
.card--tall h3{font-size:22px;}
.card__list{display:flex;flex-direction:column;gap:8px;margin-top:4px;}
.card__list li{position:relative;padding-left:18px;font-size:14px;color:var(--t-2);}
.card__list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--c-glow);box-shadow:0 0 8px rgba(63,224,255,0.8);
}
.badge{
  align-self:flex-start;padding:4px 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:700;
  color:var(--c-accent);background:rgba(255,122,61,0.12);border:1px solid rgba(255,122,61,0.35);
}
.badge--calm{color:var(--c-glow);background:rgba(63,224,255,0.10);border-color:rgba(63,224,255,0.32);}

/* ---------- 下载按钮组 ---------- */
.dl-grid{margin-top:8px;align-items:stretch;}
.dl-grid .cell{margin-bottom:20px;}
.dl-btn{
  display:flex;align-items:center;gap:16px;height:100%;min-height:64px;
  padding:14px 22px;border-radius:var(--r-btn);
  border:1px solid rgba(96,164,255,0.32);background:rgba(255,255,255,0.03);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background .22s ease;
}
.dl-btn:hover{transform:translateY(-1px);border-color:rgba(63,224,255,0.6);background:rgba(42,107,255,0.12);color:var(--t-1);}
.dl-btn__icon{width:38px;height:38px;flex-shrink:0;border-radius:11px;display:grid;place-items:center;color:var(--c-glow);background:rgba(42,107,255,0.16);border:1px solid rgba(96,164,255,0.3);}
.dl-btn__icon svg{width:20px;height:20px;}
.dl-btn__text{display:flex;flex-direction:column;line-height:1.35;}
.dl-btn__text strong{font-size:16px;font-weight:700;}
.dl-btn__text small{font-size:12.5px;color:var(--t-3);font-variant-numeric:tabular-nums;}
.dl-btn--primary{
  background:linear-gradient(90deg,#2A6BFF,#1B44C4);border-color:transparent;color:#fff;
  box-shadow:var(--shadow-glow);animation:breathe 3s ease-in-out infinite;
}
.dl-btn--primary .dl-btn__icon{background:rgba(255,255,255,0.16);border-color:rgba(255,255,255,0.25);color:#fff;}
.dl-btn--primary .dl-btn__text small{color:rgba(255,255,255,0.82);}
.dl-btn--primary:hover{color:#fff;box-shadow:0 0 0 1px rgba(63,224,255,0.5),0 16px 42px rgba(42,107,255,0.45);}
@keyframes breathe{0%,100%{opacity:.94;}50%{opacity:1;}}
.qr-card{
  height:100%;padding:24px;border-radius:var(--r-card);text-align:center;
  background:var(--glass);border:1px solid rgba(96,164,255,0.22);box-shadow:var(--shadow-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
}
.qr-box{
  width:120px;height:120px;border-radius:14px;display:grid;place-items:center;
  background:rgba(255,255,255,0.04);border:1px dashed rgba(96,164,255,0.42);color:var(--c-glow);
}
.qr-box svg{width:44px;height:44px;}
.qr-card p{margin:0;font-size:13.5px;color:var(--t-2);}

/* ---------- 行式参数列表 ---------- */
.spec-list{border-top:1px solid var(--line-soft);}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:52px;padding:8px 0;border-bottom:1px solid var(--line-soft);
}
.spec-row .k{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--t-2);}
.spec-row .v{font-size:15px;color:var(--t-1);font-weight:600;font-variant-numeric:tabular-nums;}
.dot-ok,.dot-off{width:8px;height:8px;border-radius:50%;flex-shrink:0;}
.dot-ok{background:var(--c-ok);box-shadow:0 0 8px rgba(53,224,161,0.85);}
.dot-off{background:rgba(110,130,160,0.55);}

/* ---------- FAQ ---------- */
.faq-grid{align-items:flex-start;}
.faq-aside{position:sticky;top:96px;}
.faq-aside h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px;}
.faq-aside p{color:var(--t-2);font-size:15px;}
.faq-item{
  border-radius:16px;border:1px solid var(--line);background:rgba(255,255,255,0.025);
  margin-bottom:14px;overflow:hidden;transition:border-color .24s ease,background .24s ease;
}
.faq-item[open]{border-color:rgba(63,224,255,0.45);background:rgba(42,107,255,0.08);}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;padding:20px 56px 20px 24px;
  font-size:17px;font-weight:600;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--c-glow);opacity:0;transition:opacity .24s ease;box-shadow:0 0 12px rgba(63,224,255,0.8);
}
.faq-item[open] summary::before{opacity:1;}
.faq-item[open] summary{color:var(--c-glow);}
.faq-item summary::after{
  content:"";position:absolute;right:24px;top:50%;width:14px;height:14px;margin-top:-7px;
  background:
    linear-gradient(currentColor,currentColor) center/14px 1.5px no-repeat,
    linear-gradient(currentColor,currentColor) center/1.5px 14px no-repeat;
  color:var(--t-2);transition:transform .24s ease,color .24s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg);color:var(--c-glow);}
.faq-body{padding:0 24px 22px;color:var(--t-2);font-size:15.5px;}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- CTA 收口条 ---------- */
.cta-band{
  border-radius:var(--r-card);padding:38px 40px;
  background:var(--glass);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,0.24);box-shadow:var(--shadow-card);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);margin-bottom:8px;}
.cta-band p{margin:0;color:var(--t-2);font-size:15px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-bg-0);border-top:1px solid rgba(96,164,255,0.28);
  padding:64px 0 24px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(63,224,255,0.75),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:38px;}
.fcol h4{
  font-size:14px;font-weight:700;margin-bottom:18px;position:relative;padding-left:12px;color:var(--t-1);
}
.fcol h4::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:3px;border-radius:3px;background:var(--c-brand);}
.fcol ul{display:flex;flex-direction:column;gap:11px;}
.fcol ul a{font-size:14.5px;color:var(--t-2);transition:color .2s ease;}
.fcol ul a:hover{color:var(--c-glow);}
.footer-brand p{color:var(--t-2);font-size:14.5px;margin:16px 0 0;max-width:340px;}
.footer-brand .brand{margin-bottom:4px;}
.footer-contact{display:flex;flex-direction:column;gap:6px;margin-top:16px;font-size:13.5px;color:var(--t-3);}
.footer-bottom{
  margin-top:46px;padding-top:20px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:12px 26px;justify-content:center;
  font-size:13px;color:var(--t-3);text-align:center;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-menu{display:none;}
  .nav-toggle{display:grid;}
  .section{padding:64px 0;}
  .container{padding:0 20px;}
  .nav-inner{padding:0 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .faq-aside{position:static;}
  .spotlight .spot-body{padding:30px;}
}
@media (max-width:860px){
  .page-hero .hero-visual{margin-top:34px;}
}
@media (max-width:640px){
  .section{padding:48px 0;}
  .container{padding:0 16px;}
  .nav-inner{padding:0 16px;height:56px;}
  :root{--nav-h:56px;}
  .brand-text{font-size:17px;}
  .btn--sm{padding:0 14px;}
  .page-hero{padding:34px 0 44px;}
  .hero-visual,.hero-visual img{min-height:0;height:300px;}
  .spotlight{min-height:0;}
  .spotlight img{position:relative;height:220px;}
  .spotlight .spot-body{padding:22px;max-width:none;}
  .spot-stats{gap:22px;}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .hero-actions .btn{width:100%;}
  .faq-item summary{font-size:16px;padding:18px 48px 18px 18px;}
  .faq-body{padding:0 18px 18px;}
}

/* roulang page: category2 */
:root{
  --c-bg-0:#050A16;
  --c-bg-1:#091127;
  --c-bg-2:#0E1A38;
  --c-brand:#2A6BFF;
  --c-brand-deep:#1B44C4;
  --c-glow:#3FE0FF;
  --c-accent:#FF7A3D;
  --c-ok:#35E0A1;
  --c-text:#EDF3FF;
  --c-text-2:#A6B8D4;
  --c-text-3:#6E82A0;
  --line:rgba(96,164,255,.18);
  --line-soft:rgba(96,164,255,.12);
  --glass:rgba(16,34,66,.52);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --shadow-card:0 18px 48px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-btn:0 0 0 1px rgba(63,224,255,.35), 0 10px 30px rgba(42,107,255,.28);
  --maxw:1200px;
  --t:240ms cubic-bezier(.4,0,.2,1);
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--c-text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
svg{display:block}
::selection{background:rgba(42,107,255,.4)}
a:focus-visible,button:focus-visible{outline:2px solid var(--c-glow);outline-offset:3px;border-radius:8px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.button{background:none;border:0;border-radius:var(--r-btn);color:inherit;padding:0}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:transparent;
  transition:background var(--t),border-color var(--t),box-shadow var(--t),backdrop-filter var(--t);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(5,10,22,.88);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(63,224,255,.24);
  box-shadow:0 12px 34px rgba(0,0,0,.46);
}
.nav-inner{
  max-width:var(--maxw);margin:0 auto;padding:0 24px;
  height:64px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav-left{display:flex;align-items:center;gap:26px;min-width:0}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(90deg,#2A6BFF,#1B44C4);
  box-shadow:0 0 0 1px rgba(63,224,255,.35),0 8px 22px rgba(42,107,255,.3);
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#EDF3FF;stroke-width:1.6}
.brand-text{font-weight:800;font-size:19px;letter-spacing:.02em;white-space:nowrap}
.nav-menu{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;padding:9px 12px;font-size:15px;color:var(--c-text-2);
  border-radius:8px;transition:color var(--t),background var(--t);white-space:nowrap;
}
.nav-link:hover{color:var(--c-text);background:rgba(96,164,255,.08)}
.nav-link.is-active{color:var(--c-text)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-glow);box-shadow:0 0 12px rgba(63,224,255,.85);
}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);color:var(--c-text-2);
  display:grid;place-items:center;cursor:pointer;
  transition:color var(--t),border-color var(--t),background var(--t),transform var(--t);
}
.icon-btn svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.6}
.icon-btn:hover{color:var(--c-glow);border-color:rgba(63,224,255,.4);background:rgba(63,224,255,.08);transform:translateY(-1px)}
.nav-toggle{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-weight:700;font-size:15px;letter-spacing:.02em;cursor:pointer;
  border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6}
.btn--primary{
  background:linear-gradient(90deg,#2A6BFF,#1B44C4);color:#fff;box-shadow:var(--shadow-btn);
}
.btn--primary:hover{
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(63,224,255,.5),0 14px 38px rgba(42,107,255,.42);
}
.btn--ghost{
  background:rgba(255,255,255,.03);border-color:var(--line);color:var(--c-text);
}
.btn--ghost:hover{
  border-color:rgba(63,224,255,.45);color:var(--c-glow);transform:translateY(-1px);
  box-shadow:0 10px 26px rgba(0,0,0,.35);
}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn--lg{min-height:60px;padding:0 30px;font-size:16px}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:130px 0 76px;
  background:var(--c-bg-0);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.2;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;top:-180px;right:-120px;width:620px;height:620px;
  background:radial-gradient(circle,rgba(42,107,255,.28),rgba(42,107,255,0) 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(63,224,255,.3);background:rgba(63,224,255,.07);
  color:var(--c-glow);font-size:13px;font-weight:600;letter-spacing:.06em;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--c-glow);box-shadow:0 0 10px rgba(63,224,255,.9);font-style:normal}
h1{
  margin-top:20px;
  font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.22;letter-spacing:-.01em;
}
h1 .hl{color:var(--c-glow)}
.hero-sub{margin-top:18px;font-size:17px;color:var(--c-text-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;
  font-size:13px;color:var(--c-text-3);
}
.hero-meta span{
  display:inline-flex;align-items:center;gap:7px;
  font-variant-numeric:tabular-nums;
}
.hero-meta b{color:var(--c-text-2);font-weight:600}
.hero-panel{
  position:relative;
  padding:16px;border-radius:20px;
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,.22);
  box-shadow:var(--shadow-card);
}
.hero-panel::before,.hero-panel::after{
  content:"";position:absolute;width:26px;height:26px;pointer-events:none;
  border-color:var(--c-glow);opacity:.7;
}
.hero-panel::before{top:8px;left:8px;border-left:1px solid;border-top:1px solid;border-top-left-radius:8px}
.hero-panel::after{bottom:8px;right:8px;border-right:1px solid;border-bottom:1px solid;border-bottom-right-radius:8px}
.hero-panel img{border-radius:14px;width:100%;aspect-ratio:16/10;object-fit:cover}
.float-stat{
  position:absolute;left:-14px;bottom:34px;
  display:flex;flex-direction:column;gap:2px;
  padding:12px 18px;border-radius:14px;
  background:rgba(9,17,39,.92);
  border:1px solid rgba(96,164,255,.28);
  box-shadow:0 18px 40px rgba(0,0,0,.5);
}
.float-stat strong{
  font-size:22px;font-weight:800;color:var(--c-glow);font-variant-numeric:tabular-nums;line-height:1.2;
}
.float-stat span{font-size:12px;color:var(--c-text-3)}

/* ---------- crumbs ---------- */
.crumbs{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--c-text-3);margin-bottom:24px;
}
.crumbs a{color:var(--c-text-2);transition:color var(--t)}
.crumbs a:hover{color:var(--c-glow)}
.crumbs span.sep{color:var(--c-text-3);opacity:.6}
.crumbs span.current{color:var(--c-text-3)}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section--alt{background:var(--c-bg-1)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .tag{
  display:inline-block;margin-bottom:14px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(255,122,61,.12);border:1px solid rgba(255,122,61,.35);
  color:var(--c-accent);font-size:12px;font-weight:700;letter-spacing:.08em;
}
h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.35;letter-spacing:-.01em}
.section-head p{margin-top:14px;color:var(--c-text-2);font-size:16px}
h3{font-size:21px;font-weight:700;line-height:1.45}
h4{font-size:17px;font-weight:600}

/* ---------- flow list ---------- */
.flow-list{border-top:1px solid var(--line-soft)}
.flow-item{
  position:relative;
  display:grid;grid-template-columns:52px 46px minmax(0,1fr);gap:18px;align-items:start;
  padding:22px 8px 22px 4px;border-bottom:1px solid var(--line-soft);
  transition:background var(--t);
}
.flow-item::before{
  content:"";position:absolute;left:-4px;top:20px;bottom:20px;width:3px;border-radius:2px;
  background:var(--c-glow);box-shadow:0 0 14px rgba(63,224,255,.75);
  opacity:0;transition:opacity var(--t);
}
.flow-item:hover{background:rgba(96,164,255,.04)}
.flow-item:hover::before{opacity:1}
.flow-item .num{
  font-variant-numeric:tabular-nums;font-weight:800;font-size:15px;letter-spacing:.08em;
  color:var(--c-glow);padding-top:4px;
}
.flow-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(42,107,255,.14);border:1px solid var(--line);color:var(--c-glow);
}
.flow-icon svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5}
.flow-body p{margin-top:6px;color:var(--c-text-2);font-size:15px;line-height:1.8}

/* ---------- data layout / alternating rows ---------- */
.data-layout{
  display:grid;grid-template-columns:minmax(0,2.05fr) minmax(0,1fr);
  gap:44px;align-items:start;
}
.alt-stack{display:flex;flex-direction:column;gap:40px}
.alt-row{
  display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center;
  padding:24px;border-radius:var(--r-card);
  background:rgba(14,26,56,.55);
  border:1px solid var(--line);
  box-shadow:0 14px 36px rgba(0,0,0,.34), inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform var(--t),border-color var(--t);
}
.alt-row:hover{transform:translateY(-3px);border-color:rgba(96,164,255,.34)}
.alt-row.is-reverse .alt-media{order:2}
.alt-media img{
  border-radius:var(--r-img);width:100%;aspect-ratio:4/3;object-fit:cover;
  border:1px solid var(--line);
}
.alt-text .kicker{
  display:inline-block;margin-bottom:10px;font-size:12px;font-weight:700;letter-spacing:.1em;
  color:var(--c-accent);font-variant-numeric:tabular-nums;
}
.alt-text p{margin-top:10px;color:var(--c-text-2);font-size:15px}
.alt-text ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.alt-text li{
  position:relative;padding-left:18px;font-size:14px;color:var(--c-text-2);
}
.alt-text li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--c-glow);box-shadow:0 0 10px rgba(63,224,255,.8);
}
.param-card{
  position:sticky;top:96px;
  padding:26px 24px;border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,.22);
  box-shadow:var(--shadow-card);
}
.param-card h3{font-size:18px;padding-bottom:14px;border-bottom:1px solid var(--line-soft)}
.param-list{margin-top:14px;display:flex;flex-direction:column}
.param-list div{
  display:flex;justify-content:space-between;align-items:center;gap:14px;
  min-height:52px;padding:0 2px;border-bottom:1px solid var(--line-soft);
}
.param-list div:last-child{border-bottom:0}
.param-list dt{font-size:14px;color:var(--c-text-3)}
.param-list dd{
  font-size:14px;font-weight:600;color:var(--c-text);
  font-variant-numeric:tabular-nums;text-align:right;
}
.param-card .btn{width:100%;margin-top:20px}

/* ---------- focus cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  padding:26px 24px;border-radius:var(--r-card);
  background:rgba(14,26,56,.6);
  border:1px solid var(--line);
  box-shadow:0 14px 34px rgba(0,0,0,.32), inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(63,224,255,.42);
  box-shadow:0 22px 50px rgba(0,0,0,.48), inset 0 1px 0 rgba(255,255,255,.07);
}
.card .card-icon{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(140deg,rgba(42,107,255,.28),rgba(63,224,255,.12));
  border:1px solid var(--line);color:var(--c-glow);
}
.card .card-icon svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.5}
.card h3{font-size:19px}
.card p{margin-top:10px;color:var(--c-text-2);font-size:15px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:13px;color:var(--c-text-2);
}
.chip:hover{border-color:rgba(63,224,255,.4);color:var(--c-glow)}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start}
.faq-aside{position:sticky;top:96px}
.faq-aside p{margin-top:14px;color:var(--c-text-2);font-size:15px}
.faq-aside .btn{margin-top:22px}
.accordion{border:0;background:transparent;margin:0}
.accordion .accordion-item{border:0;border-bottom:1px solid var(--line-soft);position:relative}
.accordion .accordion-item::before{
  content:"";position:absolute;left:-2px;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:var(--c-glow);box-shadow:0 0 14px rgba(63,224,255,.75);opacity:0;transition:opacity var(--t);
}
.accordion .accordion-item.is-active::before{opacity:1}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 42px 20px 4px;font-size:17px;font-weight:600;color:var(--c-text);
  background:transparent;border:0;line-height:1.6;transition:color var(--t);
}
.accordion .accordion-title::before{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--c-glow);line-height:1;transition:transform var(--t);
}
.accordion .accordion-title:hover{color:var(--c-glow)}
.accordion .accordion-item.is-active .accordion-title{color:var(--c-glow)}
.accordion .accordion-item.is-active .accordion-title::before{content:"−"}
.accordion .accordion-content{
  padding:0 42px 22px 4px;background:transparent;border:0;color:var(--c-text-2);
  font-size:16px;line-height:1.85;
}

/* ---------- cta ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:34px 34px;border-radius:20px;
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,.24);
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;left:-40px;bottom:-70px;width:58%;height:140px;
  background:linear-gradient(90deg,rgba(63,224,255,.18),rgba(63,224,255,0));
  transform:rotate(-6deg);pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2.6vw,26px)}
.cta-band p{margin-top:8px;color:var(--c-text-2);font-size:15px;max-width:520px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-bg-0);
  border-top:1px solid rgba(63,224,255,.22);
  padding:64px 0 0;
  margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:46px;
}
.fcol h4{
  font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:18px;
  position:relative;padding-left:12px;
}
.fcol h4::before{
  content:"";position:absolute;left:0;top:6px;width:3px;height:14px;border-radius:2px;
  background:var(--c-brand);box-shadow:0 0 10px rgba(42,107,255,.7);
}
.fcol ul{display:flex;flex-direction:column;gap:11px}
.fcol a{font-size:14px;color:var(--c-text-2);transition:color var(--t),padding-left var(--t)}
.fcol a:hover{color:var(--c-glow);padding-left:4px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--c-text-2);max-width:320px}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:8px;font-size:13px;color:var(--c-text-3);font-variant-numeric:tabular-nums}
.footer-bottom{
  border-top:1px solid var(--line-soft);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px 26px;
  font-size:13px;color:var(--c-text-3);text-align:center;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .page-hero{padding:112px 0 56px}
  .data-layout{grid-template-columns:1fr;gap:36px}
  .param-card{position:static}
  .faq-layout{grid-template-columns:1fr;gap:30px}
  .faq-aside{position:static}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}

  .nav-menu{
    position:fixed;top:56px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    padding:18px 20px 100px;
    background:rgba(5,10,22,.98);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:opacity var(--t),transform var(--t);
    overflow-y:auto;
  }
  .nav-menu.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-link{font-size:18px;padding:16px 12px;border-bottom:1px solid var(--line-soft);border-radius:0}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{color:var(--c-glow);border-bottom-color:rgba(63,224,255,.35)}
  .nav-toggle{display:grid}
  .nav-inner{height:56px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .page-hero{padding:96px 0 44px}
  body{font-size:15px}
  h1{font-size:clamp(26px,7.6vw,34px)}
  .hero-sub{font-size:15px}
  .hero-actions .btn{flex:1 1 100%}
  .flow-item{grid-template-columns:44px minmax(0,1fr);gap:14px}
  .flow-icon{width:40px;height:40px}
  .alt-row{grid-template-columns:1fr;padding:18px}
  .alt-row.is-reverse .alt-media{order:0}
  .alt-media img{aspect-ratio:16/10}
  .card-grid{grid-template-columns:1fr}
  .hero-panel img{aspect-ratio:16/11}
  .float-stat{left:8px;bottom:12px;padding:10px 14px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer-brand{grid-column:1 / -1}
  .accordion .accordion-title{padding:16px 38px 16px 2px;font-size:16px}
  .accordion .accordion-content{padding:0 30px 18px 2px}
  .hero-meta{gap:8px 16px;font-size:12.5px}
}
@media (max-width:420px){
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category3 */
:root{
  --c-bg-0:#050A16;
  --c-bg-1:#091127;
  --c-bg-2:#0E1A38;
  --c-brand:#2A6BFF;
  --c-brand-deep:#1B44C4;
  --c-glow:#3FE0FF;
  --c-accent:#FF7A3D;
  --c-ok:#35E0A1;
  --c-text:#EDF3FF;
  --c-text-2:#A6B8D4;
  --c-text-3:#6E82A0;
  --c-line:rgba(96,164,255,.18);
  --c-line-soft:rgba(96,164,255,.12);
  --glass:rgba(16,34,66,.52);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --shadow-card:0 18px 48px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-glow:0 0 0 1px rgba(63,224,255,.35), 0 10px 30px rgba(42,107,255,.28);
  --w-container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--c-text);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--c-text);text-decoration:none;transition:color .24s var(--ease),opacity .24s var(--ease);}
a:hover{color:var(--c-glow);}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:-.01em;}
h1{font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.22;}
h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.32;}
h3{font-size:20px;font-weight:700;line-height:1.45;}
h4{font-size:16px;font-weight:600;}
p{margin:0 0 1em;}
ul,ol,dl{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-glow);outline-offset:3px;border-radius:6px;}
.container{
  width:100%;
  max-width:var(--w-container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.num{font-variant-numeric:tabular-nums;}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  transition:background .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
  border-bottom:1px solid transparent;
  background:linear-gradient(180deg,rgba(5,10,22,.72),rgba(5,10,22,0));
}
.site-header.is-scrolled{
  background:rgba(7,13,28,.86);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:rgba(63,224,255,.26);
  box-shadow:0 10px 30px rgba(0,0,0,.42);
}
.nav-inner{
  max-width:var(--w-container);
  margin:0 auto;
  padding:0 24px;
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.nav-left{display:flex;align-items:center;gap:28px;min-width:0;}
.nav-right{display:flex;align-items:center;gap:12px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(135deg,rgba(42,107,255,.35),rgba(63,224,255,.14));
  border:1px solid rgba(96,164,255,.32);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.1);
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:var(--c-glow);stroke-width:1.5;}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--c-text);}
.nav-menu{display:flex;align-items:center;gap:22px;}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--c-text-2);
  padding:20px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;left:0;right:0;bottom:16px;height:2px;
  background:var(--c-glow);
  border-radius:2px;
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
  box-shadow:0 0 10px rgba(63,224,255,.7);
}
.nav-link:hover{color:var(--c-text);}
.nav-link:hover::after{opacity:.6;transform:scaleX(1);}
.nav-link.is-active{color:var(--c-text);font-weight:600;}
.nav-link.is-active::after{opacity:1;transform:scaleX(1);}
.icon-btn{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:11px;
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.03);
  cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.icon-btn svg{width:19px;height:19px;fill:none;stroke:var(--c-text-2);stroke-width:1.5;}
.icon-btn:hover{border-color:rgba(63,224,255,.5);background:rgba(63,224,255,.08);}
.icon-btn:hover svg{stroke:var(--c-glow);}
.nav-toggle{display:none;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.03);
  color:var(--c-text);
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;}
.btn--primary{
  background:linear-gradient(90deg,#2A6BFF,#1B44C4);
  border-color:rgba(63,224,255,.4);
  box-shadow:var(--shadow-glow);
}
.btn--primary:hover{
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(63,224,255,.5),0 14px 40px rgba(42,107,255,.4);
}
.btn--ghost:hover{
  color:var(--c-text);
  border-color:rgba(63,224,255,.5);
  background:rgba(63,224,255,.07);
  transform:translateY(-1px);
}
.btn--sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn--lg{min-height:64px;font-size:16px;flex-direction:column;gap:2px;line-height:1.3;}
.btn--lg small{font-size:12px;font-weight:400;color:var(--c-text-2);font-variant-numeric:tabular-nums;}
.btn--primary small{color:rgba(237,243,255,.82);}
.btn--breathe{animation:breathe 3s ease-in-out infinite;}
@keyframes breathe{
  0%,100%{opacity:1;}
  50%{opacity:.9;}
}

/* ============ 玻璃面板 ============ */
.glass{
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,.22);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
}
.cut-corners{
  position:relative;
  overflow:hidden;
}
.cut-corners::before,.cut-corners::after{
  content:"";
  position:absolute;width:12px;height:12px;
  border-color:rgba(63,224,255,.55);
  border-style:solid;
  z-index:3;
}
.cut-corners::before{top:0;left:0;border-width:1px 0 0 1px;}
.cut-corners::after{bottom:0;right:0;border-width:0 1px 1px 0;}

/* ============ 小 Hero ============ */
.page-hero{
  position:relative;
  padding:132px 0 72px;
  background:var(--c-bg-0);
  overflow:hidden;
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center right;
  opacity:.16;
  mask-image:linear-gradient(90deg,rgba(0,0,0,.15),#000 70%);
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.15),#000 70%);
}
.page-hero__glow{
  position:absolute;
  width:720px;height:720px;
  left:-180px;top:-260px;
  background:radial-gradient(circle,rgba(42,107,255,.28) 0%,rgba(42,107,255,0) 62%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:14px;
  color:var(--c-text-3);
  margin-bottom:26px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb span{color:var(--c-text-3);}
.breadcrumb em{font-style:normal;color:var(--c-text-3);}
.page-hero h1{margin-bottom:18px;max-width:15em;}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:var(--c-text-2);
  max-width:36em;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  font-size:13px;color:var(--c-text-3);
  font-variant-numeric:tabular-nums;
}
.hero-meta li{display:inline-flex;align-items:center;gap:7px;}
.hero-meta li::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--c-glow);
  box-shadow:0 0 8px rgba(63,224,255,.9);
}
.hero-visual{
  position:relative;
  padding:14px;
  margin-top:8px;
}
.hero-visual__img{
  border-radius:12px;
  overflow:hidden;
  aspect-ratio:16/11;
  background:var(--c-bg-2);
}
.hero-visual__img img{width:100%;height:100%;object-fit:cover;border-radius:12px;}
.float-card{
  position:absolute;
  right:-6px;bottom:26px;
  padding:12px 16px;
  border-radius:14px;
  background:rgba(9,17,39,.9);
  border:1px solid rgba(63,224,255,.32);
  box-shadow:0 14px 36px rgba(0,0,0,.5);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.float-card strong{
  display:block;
  font-size:22px;font-weight:800;
  color:var(--c-glow);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.float-card span{font-size:12px;color:var(--c-text-2);}

/* ============ 区块 ============ */
.section{padding:88px 0;}
.section--alt{background:var(--c-bg-1);}
.section--panel{background:var(--c-bg-0);}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  max-width:none;
}
.sec-title{margin-bottom:14px;}
.sec-sub{font-size:16px;color:var(--c-text-2);margin:0;}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-glow);
  letter-spacing:.08em;
  padding:5px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(63,224,255,.28);
  background:rgba(63,224,255,.06);
  margin-bottom:18px;
}
.text-link{font-size:14px;color:var(--c-glow);white-space:nowrap;}
.text-link:hover{color:#fff;}

/* ============ 编号横条 ============ */
.num-list{
  border-top:1px solid var(--c-line-soft);
}
.num-item{
  position:relative;
  display:grid;
  grid-template-columns:78px 52px 1fr;
  align-items:center;
  gap:18px;
  padding:26px 0 26px 0;
  border-bottom:1px solid var(--c-line-soft);
  transition:padding-left .26s var(--ease);
}
.num-item::before{
  content:"";
  position:absolute;left:0;top:12px;bottom:12px;
  width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--c-glow),var(--c-brand));
  box-shadow:0 0 14px rgba(63,224,255,.7);
  opacity:0;
  transition:opacity .26s var(--ease);
}
.num-item:hover{padding-left:18px;}
.num-item:hover::before{opacity:1;}
.num-idx{
  font-size:22px;font-weight:800;
  color:var(--c-brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
}
.num-icon{
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:12px;
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.03);
}
.num-icon svg{width:20px;height:20px;fill:none;stroke:var(--c-glow);stroke-width:1.5;}
.num-body h3{font-size:18px;margin-bottom:4px;}
.num-body p{margin:0;font-size:14px;color:var(--c-text-2);line-height:1.7;}

/* ============ 步骤流 ============ */
.steps-wrap{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:start;
}
.steps{position:relative;padding-left:6px;}
.steps::before{
  content:"";
  position:absolute;
  left:29px;top:18px;bottom:26px;
  width:1px;
  background:linear-gradient(180deg,rgba(63,224,255,.65),rgba(42,107,255,.35),rgba(96,164,255,.06));
}
.step{
  position:relative;
  display:flex;
  gap:22px;
  padding-bottom:34px;
}
.step:last-child{padding-bottom:0;}
.step-node{
  position:relative;
  flex:none;
  width:58px;height:58px;
  display:grid;place-items:center;
  border-radius:16px;
  background:rgba(14,26,56,.92);
  border:1px solid rgba(63,224,255,.32);
  box-shadow:0 0 0 6px rgba(5,10,22,.9), 0 0 22px rgba(42,107,255,.22);
  font-size:17px;
  font-weight:800;
  color:var(--c-glow);
  font-variant-numeric:tabular-nums;
  z-index:2;
}
.step-body{
  flex:1;
  min-width:0;
  padding:20px 22px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid rgba(96,164,255,.18);
  transition:border-color .26s var(--ease),transform .26s var(--ease);
}
.step-body:hover{border-color:rgba(63,224,255,.42);transform:translateY(-2px);}
.step-body h3{margin-bottom:8px;}
.step-body p{margin:0 0 12px;font-size:14.5px;color:var(--c-text-2);line-height:1.8;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  font-size:12.5px;
  color:var(--c-text-2);
  padding:4px 12px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.03);
  font-variant-numeric:tabular-nums;
}
.chip--accent{color:var(--c-accent);border-color:rgba(255,122,61,.4);background:rgba(255,122,61,.08);}
.chip--ok{color:var(--c-ok);border-color:rgba(53,224,161,.36);background:rgba(53,224,161,.08);}

/* 侧栏参数卡 */
.side-card{padding:26px 24px;position:sticky;top:96px;}
.side-card h3{font-size:18px;margin-bottom:6px;}
.side-card > p{font-size:14px;color:var(--c-text-2);margin-bottom:18px;}
.side-metric{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;
  padding-bottom:18px;margin-bottom:18px;
  border-bottom:1px solid var(--c-line-soft);
}
.metric-box{
  border-radius:14px;
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.03);
  padding:14px 16px;
}
.metric-box strong{
  display:block;
  font-size:24px;font-weight:800;
  color:var(--c-glow);
  font-variant-numeric:tabular-nums;
  line-height:1.25;
}
.metric-box span{font-size:12.5px;color:var(--c-text-3);}
.side-list li{
  display:flex;justify-content:space-between;gap:12px;
  padding:11px 0;
  font-size:14px;
  border-bottom:1px solid var(--c-line-soft);
  color:var(--c-text-2);
}
.side-list li:last-child{border-bottom:0;}
.side-list b{color:var(--c-text);font-weight:600;font-variant-numeric:tabular-nums;}

/* ============ Tabs 参数 ============ */
.spec-tabs{
  display:flex;flex-wrap:wrap;gap:10px;
  border:0;background:transparent;
  margin-bottom:26px;
}
.spec-tabs .tabs-title{float:none;}
.spec-tabs .tabs-title > a{
  display:inline-flex;align-items:center;
  padding:10px 22px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.03);
  color:var(--c-text-2);
  font-size:14.5px;
  line-height:1.4;
  transition:all .24s var(--ease);
}
.spec-tabs .tabs-title > a:hover{background:rgba(63,224,255,.08);color:var(--c-text);}
.spec-tabs .tabs-title.is-active > a{
  background:linear-gradient(90deg,rgba(42,107,255,.9),rgba(27,68,196,.9));
  border-color:rgba(63,224,255,.5);
  color:#fff;
  box-shadow:0 0 0 1px rgba(63,224,255,.3),0 10px 26px rgba(42,107,255,.3);
}
.tabs-content{border:0;background:transparent;margin-bottom:0;}
.tabs-panel{padding:0;background:transparent;}
.spec-list{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:rgba(14,26,56,.5);
}
.spec-row{
  display:grid;
  grid-template-columns:minmax(140px,260px) 1fr;
  align-items:center;
  min-height:52px;
  padding:0 22px;
  border-bottom:1px solid var(--c-line-soft);
  gap:16px;
}
.spec-row:last-child{border-bottom:0;}
.spec-row dt{
  display:flex;align-items:center;gap:10px;
  font-size:14.5px;color:var(--c-text-2);
}
.spec-row dd{
  margin:0;
  font-size:14.5px;
  color:var(--c-text);
  font-variant-numeric:tabular-nums;
}
.dot{width:8px;height:8px;border-radius:50%;flex:none;background:var(--c-ok);box-shadow:0 0 8px rgba(53,224,161,.8);}
.dot--off{background:var(--c-text-3);box-shadow:none;opacity:.6;}

/* ============ 说明卡 ============ */
.info-cards{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.info-card{
  padding:28px 26px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid rgba(96,164,255,.18);
  box-shadow:var(--shadow-card);
  transition:border-color .26s var(--ease),transform .26s var(--ease);
}
.info-card:hover{border-color:rgba(63,224,255,.42);transform:translateY(-4px);}
.info-card__top{
  display:flex;align-items:center;gap:14px;
  margin-bottom:14px;
}
.info-card__icon{
  width:44px;height:44px;flex:none;
  display:grid;place-items:center;
  border-radius:12px;
  border:1px solid rgba(63,224,255,.28);
  background:rgba(63,224,255,.07);
}
.info-card__icon svg{width:20px;height:20px;fill:none;stroke:var(--c-glow);stroke-width:1.5;}
.info-card h3{font-size:18px;}
.info-card p{margin:0;font-size:14.5px;color:var(--c-text-2);line-height:1.85;}
.info-card__img{
  margin-top:18px;
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:16/9;
  background:var(--c-bg-2);
}
.info-card__img img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-img);}

/* ============ FAQ ============ */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:48px;
  align-items:start;
}
.faq-aside{position:sticky;top:96px;}
.faq-aside h2{margin-bottom:14px;}
.faq-aside p{font-size:15px;color:var(--c-text-2);}
.accordion{
  background:transparent;
  border:0;
  border-top:1px solid var(--c-line-soft);
}
.accordion .accordion-item{border-bottom:1px solid var(--c-line-soft);border-top:0;}
.accordion .accordion-title{
  position:relative;
  border:0;
  background:transparent;
  padding:22px 48px 22px 18px;
  font-size:17px;
  font-weight:600;
  color:var(--c-text);
  line-height:1.55;
  transition:color .24s var(--ease),padding-left .24s var(--ease);
}
.accordion .accordion-title::before{
  content:"";
  position:absolute;left:0;top:16px;bottom:16px;
  width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--c-glow),var(--c-brand));
  box-shadow:0 0 14px rgba(63,224,255,.7);
  opacity:0;
  transition:opacity .24s var(--ease);
}
.accordion .accordion-title::after{
  content:"";
  position:absolute;right:18px;top:50%;
  width:13px;height:13px;
  transform:translateY(-50%);
  background:
    linear-gradient(var(--c-glow),var(--c-glow)) center/13px 1.5px no-repeat,
    linear-gradient(var(--c-glow),var(--c-glow)) center/1.5px 13px no-repeat;
  transition:transform .26s var(--ease);
}
.accordion .accordion-item.is-active .accordion-title::after{
  background:linear-gradient(var(--c-glow),var(--c-glow)) center/13px 1.5px no-repeat;
  transform:translateY(-50%) rotate(180deg);
}
.accordion .accordion-title:hover{color:var(--c-glow);padding-left:26px;}
.accordion .accordion-item.is-active .accordion-title{color:var(--c-glow);padding-left:26px;}
.accordion .accordion-item.is-active .accordion-title::before{opacity:1;}
.accordion .accordion-content{
  border:0;
  background:transparent;
  padding:0 48px 24px 18px;
  color:var(--c-text-2);
  font-size:15px;
  line-height:1.85;
}
.accordion .accordion-content p{margin:0;}

/* ============ CTA 条 ============ */
.cta-bar{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:34px 36px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid rgba(96,164,255,.24);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.cta-bar__lines{
  position:absolute;left:0;top:0;bottom:0;
  width:58%;
  background:repeating-linear-gradient(115deg,rgba(63,224,255,.09) 0 1px,transparent 1px 26px);
  opacity:.5;
  pointer-events:none;
}
.cta-bar__text{position:relative;z-index:2;}
.cta-bar__text h2{font-size:24px;margin-bottom:8px;}
.cta-bar__text p{margin:0;font-size:14.5px;color:var(--c-text-2);}
.cta-bar__actions{position:relative;z-index:2;display:flex;gap:14px;flex:none;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-bg-0);
  border-top:1px solid rgba(63,224,255,.24);
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:38px;
  border-bottom:1px solid var(--c-line-soft);
}
.fcol h4{
  font-size:14px;
  font-weight:700;
  margin-bottom:16px;
  position:relative;
  padding-left:12px;
}
.fcol h4::before{
  content:"";
  position:absolute;left:0;top:50%;
  width:3px;height:14px;transform:translateY(-50%);
  border-radius:3px;
  background:var(--c-brand);
}
.fcol ul li{margin-bottom:10px;}
.fcol ul a{font-size:14px;color:var(--c-text-2);}
.fcol ul a:hover{color:var(--c-glow);}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--c-text-2);max-width:26em;line-height:1.8;}
.footer-contact{
  display:flex;flex-direction:column;gap:6px;
  font-size:13px;color:var(--c-text-3);
  font-variant-numeric:tabular-nums;
}
.footer-bottom{
  padding-top:22px;
  display:flex;align-items:center;justify-content:center;
  flex-wrap:wrap;gap:8px 26px;
  font-size:13px;color:var(--c-text-3);
  font-variant-numeric:tabular-nums;
}

/* ============ 移动抽屉 ============ */
.nav-drawer{
  position:fixed;inset:0;
  z-index:200;
  background:rgba(5,10,22,.98);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  display:flex;
  flex-direction:column;
  padding:18px 22px 26px;
  transform:translateY(-102%);
  opacity:0;
  visibility:hidden;
  transition:transform .32s var(--ease),opacity .32s var(--ease),visibility .32s;
}
.nav-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-menu{display:flex;flex-direction:column;gap:4px;flex:1;}
.drawer-menu a{
  font-size:18px;
  color:var(--c-text-2);
  padding:15px 0;
  border-bottom:1px solid var(--c-line-soft);
}
.drawer-menu a.is-active{color:var(--c-glow);font-weight:600;}
.drawer-cta{margin-top:22px;}
.drawer-cta .btn{width:100%;}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .nav-menu{display:none;}
  .nav-toggle{display:grid;}
  .container{padding-left:20px;padding-right:20px;}
  .nav-inner{padding:0 20px;height:60px;}
  .section{padding:64px 0;}
  .page-hero{padding:112px 0 56px;}
  .steps-wrap{grid-template-columns:1fr;gap:32px;}
  .side-card{position:static;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-aside{position:static;}
  .info-cards{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .footer-brand{grid-column:1 / -1;}
}
@media screen and (max-width:640px){
  body{font-size:15.5px;}
  .container{padding-left:16px;padding-right:16px;}
  .nav-inner{padding:0 16px;height:56px;}
  .brand-text{font-size:17px;}
  .nav-right .btn--sm{display:none;}
  .icon-btn{width:38px;height:38px;}
  .section{padding:48px 0;}
  .page-hero{padding:96px 0 44px;}
  .breadcrumb{margin-bottom:18px;font-size:13px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;min-width:140px;}
  .hero-visual{margin-top:26px;padding:10px;}
  .hero-visual__img{aspect-ratio:16/12;}
  .float-card{right:8px;bottom:14px;padding:10px 13px;}
  .float-card strong{font-size:18px;}
  .num-item{grid-template-columns:52px 1fr;row-gap:10px;padding:20px 0;}
  .num-item .num-icon{display:none;}
  .num-idx{font-size:19px;}
  .step{flex-direction:column;gap:14px;padding-bottom:26px;}
  .steps::before{display:none;}
  .step-node{width:52px;height:52px;font-size:15px;box-shadow:0 0 0 4px rgba(5,10,22,.9);}
  .step-body{padding:18px 18px;}
  .spec-tabs{gap:8px;}
  .spec-tabs .tabs-title > a{padding:9px 16px;font-size:14px;}
  .spec-row{grid-template-columns:1fr;gap:2px;padding:12px 18px;min-height:0;}
  .spec-row dt{font-size:13.5px;}
  .spec-row dd{font-size:14px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 22px;gap:20px;}
  .cta-bar__actions{width:100%;flex-direction:column;}
  .cta-bar__actions .btn{width:100%;}
  .cta-bar__lines{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:6px;text-align:center;}
  .sec-head--row{flex-direction:column;align-items:flex-start;gap:12px;}
  .sec-head{margin-bottom:30px;}
  .btn--lg{min-height:58px;}
}
@media screen and (min-width:1440px){
  .page-hero__glow{left:-120px;}
}

/* roulang page: category4 */
:root{
  --c-bg-0:#050A16;
  --c-bg-1:#091127;
  --c-bg-2:#0E1A38;
  --c-brand:#2A6BFF;
  --c-brand-deep:#1B44C4;
  --c-glow:#3FE0FF;
  --c-accent:#FF7A3D;
  --c-ok:#35E0A1;
  --t-1:#EDF3FF;
  --t-2:#A6B8D4;
  --t-3:#6E82A0;
  --line:rgba(96,164,255,0.18);
  --div:rgba(96,164,255,0.12);
  --glass:rgba(16,34,66,0.52);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-card:0 18px 48px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.06);
  --shadow-glow:0 0 0 1px rgba(63,224,255,0.35), 0 10px 30px rgba(42,107,255,0.28);
  --nav-h:64px;
  --space-sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--t-1);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:0;}
a{color:var(--t-1);text-decoration:none;transition:color .22s ease, border-color .22s ease, background-color .22s ease;}
a:hover{color:var(--c-glow);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;color:var(--t-1);}
p{margin:0 0 1em;color:var(--t-2);}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:var(--space-sec) 0;}
.section--alt{background:var(--c-bg-1);}
.sec-head{margin-bottom:40px;max-width:760px;}
.sec-head h2{font-size:32px;line-height:1.3;margin-bottom:12px;}
.sec-head p{font-size:15px;color:var(--t-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--c-glow);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--c-glow);display:inline-block;opacity:.8;}
.rule{height:1px;background:var(--div);border:0;margin:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:rgba(255,255,255,0.03);
  color:var(--t-1);
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;text-align:center;
  transition:transform .22s ease, box-shadow .22s ease, background-color .22s ease, border-color .22s ease, color .22s ease;
}
.btn:hover,.btn:focus{color:#fff;border-color:rgba(63,224,255,0.55);background:rgba(63,224,255,0.06);transform:translateY(-1px);}
.btn:focus-visible{outline:2px solid var(--c-glow);outline-offset:3px;}
.btn--primary{
  background:linear-gradient(90deg,#2A6BFF 0%,#1B44C4 100%);
  border-color:transparent;
  box-shadow:var(--shadow-glow);
  color:#fff;
}
.btn--primary:hover,.btn--primary:focus{
  color:#fff;
  box-shadow:0 0 0 1px rgba(63,224,255,0.5), 0 14px 38px rgba(42,107,255,0.38);
  transform:translateY(-1px);
  background:linear-gradient(90deg,#3A78FF 0%,#2350D8 100%);
}
.btn--ghost{background:transparent;}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn--lg{min-height:64px;padding:0 28px;font-size:16px;flex-direction:column;gap:2px;align-items:flex-start;}
.btn--lg .btn-sub{font-size:12px;font-weight:400;color:rgba(255,255,255,0.72);line-height:1.4;letter-spacing:0;}
.btn--block{width:100%;}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;flex:0 0 auto;}
@keyframes breath{
  0%,100%{box-shadow:0 0 0 1px rgba(63,224,255,0.32), 0 10px 28px rgba(42,107,255,0.24);}
  50%{box-shadow:0 0 0 1px rgba(63,224,255,0.48), 0 12px 34px rgba(42,107,255,0.34);}
}
.btn--breathe{animation:breath 3s ease-in-out infinite;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:var(--nav-h);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .24s ease, border-color .24s ease, backdrop-filter .24s ease;
}
.site-header.is-solid{
  background:rgba(8,17,38,0.86);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(96,164,255,0.22);
  box-shadow:0 12px 30px rgba(0,0,0,0.35);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.nav-left{display:flex;align-items:center;gap:30px;min-width:0;}
.nav-right{display:flex;align-items:center;gap:12px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(42,107,255,0.9),rgba(27,68,196,0.6));
  border:1px solid rgba(96,164,255,0.35);
  box-shadow:0 6px 18px rgba(42,107,255,0.28);
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:#EAF2FF;stroke-width:1.5;}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.01em;color:var(--t-1);}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14.5px;font-weight:500;color:var(--t-2);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:transparent;transition:background-color .22s ease, box-shadow .22s ease;
}
.nav-link:hover{color:var(--t-1);background:rgba(63,224,255,0.06);}
.nav-link.is-active{color:var(--t-1);font-weight:700;}
.nav-link.is-active::after{background:var(--c-glow);box-shadow:0 0 12px rgba(63,224,255,0.75);}
.icon-btn{
  width:40px;height:40px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);
  background:rgba(255,255,255,0.03);
  color:var(--t-2);cursor:pointer;
  transition:color .22s ease, border-color .22s ease, background-color .22s ease;
}
.icon-btn:hover{color:var(--c-glow);border-color:rgba(63,224,255,0.5);background:rgba(63,224,255,0.06);}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;}
.nav-toggle{display:none;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:calc(var(--nav-h) + 22px) 0 0;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--t-3);}
.crumbs a{color:var(--t-2);}
.crumbs a:hover{color:var(--c-glow);}
.crumbs .sep{color:rgba(110,130,160,0.7);}
.crumbs .current{color:var(--t-3);}

/* ---------- 分类小 Hero ---------- */
.cat-hero{padding:34px 0 0;}
.cat-hero-grid{
  display:grid;grid-template-columns:6fr 6fr;gap:24px;align-items:stretch;
}
.cat-hero-text{
  padding:36px 32px;
  border-radius:var(--r-card);
  background:var(--c-bg-1);
  border:1px solid var(--line);
  display:flex;flex-direction:column;justify-content:center;gap:18px;
  position:relative;overflow:hidden;
}
.cat-hero-text::after{
  content:"";position:absolute;right:-60px;bottom:-80px;width:240px;height:240px;
  background:radial-gradient(circle, rgba(42,107,255,0.18) 0%, rgba(42,107,255,0) 70%);
  pointer-events:none;
}
.cat-hero h1{font-size:clamp(30px,4vw,44px);line-height:1.22;font-weight:800;}
.cat-hero .lead{font-size:16px;line-height:1.85;color:var(--t-2);max-width:520px;}
.cat-hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:13px;color:var(--t-2);
  border:1px solid var(--line);background:rgba(255,255,255,0.03);
}
.tag--accent{color:var(--c-accent);border-color:rgba(255,122,61,0.4);background:rgba(255,122,61,0.08);}
.tag--ok{color:var(--c-ok);border-color:rgba(53,224,161,0.35);background:rgba(53,224,161,0.07);}
.cat-hero-visual{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  min-height:300px;
  border:1px solid rgba(96,164,255,0.22);
  background:#08122A url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.cat-hero-visual::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(5,10,22,0.18) 0%, rgba(5,10,22,0.82) 100%);
}
.cat-hero-visual img{
  position:absolute;right:0;bottom:0;width:76%;max-width:520px;
  border-top-left-radius:var(--r-img);border-top-right-radius:var(--r-img);
  border:1px solid rgba(96,164,255,0.25);border-bottom:0;
  filter:drop-shadow(0 20px 40px rgba(0,0,0,0.5));
}
.cat-hero-visual .float-chip{
  position:absolute;left:22px;top:22px;z-index:2;
  display:flex;flex-direction:column;gap:2px;
  padding:12px 16px;border-radius:14px;
  background:var(--glass);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,0.22);
  box-shadow:var(--shadow-card);
  font-size:12px;color:var(--t-2);
}
.cat-hero-visual .float-chip b{font-size:20px;color:var(--t-1);font-weight:800;letter-spacing:-0.01em;}
.speedline{
  position:absolute;left:0;bottom:26px;height:2px;width:52%;z-index:2;
  background:linear-gradient(90deg, rgba(63,224,255,0.55) 0%, rgba(63,224,255,0) 100%);
  opacity:.5;
}

/* ---------- 规格对比表 ---------- */
.spec-wrap{
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--c-bg-1);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.spec-row{
  display:grid;
  grid-template-columns:1.35fr 1fr 1fr 1.1fr;
  align-items:stretch;
  border-top:1px solid var(--div);
}
.spec-row:first-child{border-top:0;}
.spec-row--head{
  background:rgba(42,107,255,0.10);
  border-bottom:1px solid rgba(96,164,255,0.22);
}
.spec-row--head .spec-cell{
  font-size:13px;font-weight:700;color:var(--t-2);letter-spacing:.04em;
  background:transparent;border-left:0;
}
.spec-cell{
  padding:18px 20px;
  display:flex;align-items:center;
  font-size:14.5px;color:var(--t-2);
  border-left:1px solid var(--div);
  min-height:64px;
}
.spec-cell:first-child{border-left:0;}
.spec-cell--key{
  color:var(--t-1);font-weight:600;font-size:15px;
  background:rgba(42,107,255,0.12);
  border-left:3px solid var(--c-brand);
  position:relative;
}
.spec-row:hover .spec-cell--key{background:rgba(42,107,255,0.18);}
.spec-row:hover .spec-cell{background-color:rgba(63,224,255,0.03);}
.spec-val{display:inline-flex;align-items:center;gap:8px;}
.dot{width:8px;height:8px;border-radius:50%;flex:0 0 auto;display:inline-block;}
.dot--ok{background:var(--c-ok);box-shadow:0 0 10px rgba(53,224,161,0.6);}
.dot--off{background:var(--t-3);opacity:.55;}
.dot--accent{background:var(--c-accent);box-shadow:0 0 10px rgba(255,122,61,0.5);}
.spec-note{margin-top:16px;font-size:13px;color:var(--t-3);}

/* ---------- 两列说明卡 ---------- */
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.info-card{
  padding:30px 28px;
  border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid rgba(96,164,255,0.22);
  box-shadow:var(--shadow-card);
  transition:transform .24s ease, border-color .24s ease;
}
.info-card:hover{transform:translateY(-4px);border-color:rgba(63,224,255,0.45);}
.info-card .ic{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(42,107,255,0.16);
  border:1px solid rgba(96,164,255,0.28);
  margin-bottom:18px;
}
.info-card .ic svg{width:22px;height:22px;fill:none;stroke:var(--c-glow);stroke-width:1.5;}
.info-card h3{font-size:21px;margin-bottom:10px;}
.info-card p{font-size:15px;margin-bottom:16px;}
.mini-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:9px 0;font-size:14.5px;color:var(--t-2);
  border-top:1px solid var(--div);
}
.mini-list li:first-child{border-top:0;}
.mini-list .mk{
  width:18px;height:18px;flex:0 0 auto;margin-top:5px;border-radius:50%;
  border:1px solid rgba(63,224,255,0.5);
  display:inline-flex;align-items:center;justify-content:center;
}
.mini-list .mk svg{width:11px;height:11px;fill:none;stroke:var(--c-glow);stroke-width:2;}

/* ---------- 自查编号条 ---------- */
.check-list{border-top:1px solid var(--div);}
.check-item{
  display:grid;grid-template-columns:64px 44px 1fr auto;gap:18px;align-items:center;
  padding:22px 8px;
  border-bottom:1px solid var(--div);
  position:relative;
  transition:background-color .22s ease;
}
.check-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:transparent;transition:background-color .22s ease, box-shadow .22s ease;
}
.check-item:hover{background-color:rgba(63,224,255,0.04);}
.check-item:hover::before{background:var(--c-glow);box-shadow:0 0 14px rgba(63,224,255,0.7);}
.check-no{
  font-size:20px;font-weight:800;color:rgba(63,224,255,0.55);
  font-variant-numeric:tabular-nums;
}
.check-ic{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:rgba(255,255,255,0.03);
}
.check-ic svg{width:20px;height:20px;fill:none;stroke:var(--c-glow);stroke-width:1.5;}
.check-main h3{font-size:18px;margin-bottom:4px;}
.check-main p{font-size:14.5px;margin:0;color:var(--t-2);}
.check-tag{
  font-size:12.5px;padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);color:var(--t-2);white-space:nowrap;
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-aside{position:sticky;top:96px;}
.faq-aside h2{font-size:30px;line-height:1.3;margin-bottom:14px;}
.faq-aside p{font-size:15px;}
.faq-aside .aside-card{
  margin-top:22px;padding:20px;border-radius:var(--r-card);
  border:1px solid var(--line);background:rgba(255,255,255,0.03);
  font-size:13.5px;color:var(--t-3);
}
ul.accordion.sec-faq{
  background:transparent;border:0;margin:0;
  border-top:1px solid var(--div);
}
ul.accordion.sec-faq .accordion-item{border:0;background:transparent;position:relative;}
ul.accordion.sec-faq .accordion-item::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
  background:transparent;transition:background-color .24s ease, box-shadow .24s ease;
}
ul.accordion.sec-faq .accordion-item.is-active::before{
  background:var(--c-glow);box-shadow:0 0 14px rgba(63,224,255,0.7);
}
ul.accordion.sec-faq .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 48px 20px 20px;
  font-size:17px;font-weight:600;color:var(--t-1);
  border:0;border-bottom:1px solid var(--div);
  background:transparent;position:relative;
  transition:color .22s ease, background-color .22s ease;
}
ul.accordion.sec-faq .accordion-title:hover{color:var(--c-glow);background:rgba(63,224,255,0.04);}
ul.accordion.sec-faq .accordion-title h3{font-size:17px;font-weight:600;margin:0;color:inherit;}
ul.accordion.sec-faq .accordion-title::before{
  content:"";position:absolute;right:20px;top:50%;
  width:14px;height:14px;margin-top:-7px;
  background:
    linear-gradient(currentColor,currentColor) center/14px 1.5px no-repeat,
    linear-gradient(currentColor,currentColor) center/1.5px 14px no-repeat;
  color:var(--c-glow);opacity:.85;
  transition:transform .24s ease, opacity .24s ease;
}
ul.accordion.sec-faq .accordion-item.is-active .accordion-title::before{
  transform:rotate(90deg) scaleY(0);opacity:.45;
}
ul.accordion.sec-faq .accordion-content{
  display:none;padding:18px 20px 24px 20px;
  border:0;border-bottom:1px solid var(--div);
  background:rgba(9,17,39,0.6);
  color:var(--t-2);font-size:15.5px;line-height:1.85;
}
ul.accordion.sec-faq .accordion-content.is-open{display:block;}
ul.accordion.sec-faq .accordion-content p{margin-bottom:.7em;}

/* ---------- CTA 条 ---------- */
.cta-band{
  border-radius:var(--r-card);
  border:1px solid rgba(96,164,255,0.22);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-card);
  padding:32px 32px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-90px;width:280px;height:280px;
  background:radial-gradient(circle, rgba(42,107,255,0.18) 0%, rgba(42,107,255,0) 70%);
  pointer-events:none;
}
.cta-band h2{font-size:24px;margin-bottom:8px;}
.cta-band p{font-size:14.5px;margin:0;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:2;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-bg-0);
  border-top:1px solid rgba(96,164,255,0.22);
  box-shadow:0 -1px 0 rgba(63,224,255,0.12);
  padding:64px 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
}
.fcol h4{
  font-size:14px;font-weight:700;color:var(--t-1);
  margin-bottom:16px;position:relative;padding-left:12px;
}
.fcol h4::before{
  content:"";position:absolute;left:0;top:6px;width:2px;height:14px;border-radius:2px;background:var(--c-brand);
}
.fcol ul li{margin-bottom:10px;}
.fcol ul a{font-size:14px;color:var(--t-2);}
.fcol ul a:hover{color:var(--c-glow);}
.footer-brand p{font-size:14px;color:var(--t-2);margin:14px 0 16px;max-width:320px;}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--t-3);}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid var(--div);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:center;align-items:center;
  font-size:13px;color:var(--t-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--space-sec:64px;}
  .nav-menu{
    position:fixed;left:0;right:0;top:var(--nav-h);bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(5,10,22,0.98);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    padding:22px 24px 90px;
    overflow-y:auto;
    transform:translateY(-8px);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .24s ease, transform .24s ease, visibility .24s;
  }
  .nav-menu.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);}
  .nav-link{font-size:18px;padding:14px 6px;border-bottom:1px solid var(--div);border-radius:0;}
  .nav-link::after{left:6px;right:auto;width:0;bottom:8px;}
  .nav-link.is-active::after{width:26px;}
  .nav-toggle{display:inline-flex;}
  .cat-hero-grid{grid-template-columns:1fr;}
  .cat-hero-visual{min-height:280px;}
  .info-grid{grid-template-columns:1fr;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-aside{position:static;}
  .spec-row{grid-template-columns:1.3fr 1fr 1fr;}
  .spec-row .spec-cell:nth-child(4){display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  :root{--space-sec:48px;--nav-h:56px;}
  .container{padding:0 16px;}
  .brand-text{font-size:16px;}
  .cat-hero-text{padding:26px 20px;}
  .cat-hero-visual{min-height:220px;max-height:320px;}
  .cat-hero-visual img{width:88%;}
  .spec-row{grid-template-columns:1fr;border-top:1px solid var(--div);}
  .spec-row--head{display:none;}
  .spec-cell{border-left:0;padding:12px 16px;min-height:0;flex-wrap:wrap;gap:6px;}
  .spec-cell--key{font-size:15px;padding:14px 16px;}
  .spec-cell:not(.spec-cell--key)::before{
    content:attr(data-label);color:var(--t-3);font-size:12.5px;
    min-width:76px;display:inline-block;
  }
  .check-item{grid-template-columns:44px 1fr;gap:12px;padding:18px 6px;}
  .check-no{display:none;}
  .check-tag{grid-column:2;justify-self:start;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:24px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .btn--lg{align-items:center;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;text-align:center;}
}

/* roulang page: category5 */
:root{
  --c-bg-0:#050A16;
  --c-bg-1:#091127;
  --c-bg-2:#0E1A38;
  --c-brand:#2A6BFF;
  --c-brand-deep:#1B44C4;
  --c-glow:#3FE0FF;
  --c-accent:#FF7A3D;
  --c-ok:#35E0A1;
  --c-text:#EDF3FF;
  --c-text-2:#A6B8D4;
  --c-text-3:#6E82A0;
  --c-line:rgba(96,164,255,.18);
  --c-line-soft:rgba(96,164,255,.12);
  --glass:rgba(16,34,66,.52);
  --glass-border:rgba(96,164,255,.22);
  --r-card:18px;
  --r-img:14px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --sh-card:0 18px 48px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --sh-btn:0 0 0 1px rgba(63,224,255,.35), 0 10px 30px rgba(42,107,255,.28);
  --sh-btn-hover:0 0 0 1px rgba(63,224,255,.5), 0 14px 38px rgba(42,107,255,.38);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--c-bg-0);
  color:var(--c-text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--c-glow);outline-offset:2px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:-.01em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;}
.num{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  font-size:16px;
  font-weight:700;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s ease, box-shadow .22s ease, background-color .22s ease, border-color .22s ease, color .22s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.btn--primary{
  background:linear-gradient(90deg,#2A6BFF 0%,#1B44C4 100%);
  color:#fff;
  box-shadow:var(--sh-btn);
}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--sh-btn-hover);}
.btn--ghost{
  background:rgba(255,255,255,.03);
  border-color:var(--c-line);
  color:var(--c-text);
}
.btn--ghost:hover{border-color:var(--c-glow);color:#fff;transform:translateY(-1px);background:rgba(63,224,255,.07);}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn--lg{min-height:64px;padding:0 28px;font-size:16px;flex-direction:column;gap:2px;}
.btn--lg .btn-sub{font-size:12px;font-weight:500;opacity:.75;line-height:1.4;}
.btn--pulse{animation:pulse 3s ease-in-out infinite;}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 1px rgba(63,224,255,.32), 0 10px 30px rgba(42,107,255,.24);}
  50%{box-shadow:0 0 0 1px rgba(63,224,255,.48), 0 12px 34px rgba(42,107,255,.36);}
}

/* ---------- 标签与徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:600;
  border:1px solid var(--c-line);
  color:var(--c-text-2);
  background:rgba(255,255,255,.03);
}
.badge--glow{border-color:rgba(63,224,255,.4);color:var(--c-glow);background:rgba(63,224,255,.08);}
.badge--accent{border-color:rgba(255,122,61,.4);color:var(--c-accent);background:rgba(255,122,61,.09);}
.badge--ok{border-color:rgba(53,224,161,.35);color:var(--c-ok);background:rgba(53,224,161,.08);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:64px;
  display:flex;
  align-items:center;
  background:transparent;
  transition:background-color .24s ease, border-color .24s ease, backdrop-filter .24s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:rgba(63,224,255,.24);
}
.nav-inner{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.nav-left{display:flex;align-items:center;gap:28px;min-width:0;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(135deg,rgba(42,107,255,.9),rgba(27,68,196,.9));
  box-shadow:0 0 0 1px rgba(63,224,255,.3), 0 8px 20px rgba(42,107,255,.3);
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.01em;color:var(--c-text);}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  padding:10px 12px;
  font-size:15px;
  color:var(--c-text-2);
  border-radius:8px;
  transition:color .2s ease, background-color .2s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-text);background:rgba(255,255,255,.04);}
.nav-link.is-active{color:var(--c-text);font-weight:700;}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--c-glow);
  box-shadow:0 0 10px rgba(63,224,255,.8);
}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:rgba(255,255,255,.03);
  border:1px solid var(--c-line);
  color:var(--c-text-2);
  cursor:pointer;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.icon-btn svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.icon-btn:hover{color:var(--c-glow);border-color:rgba(63,224,255,.45);}
.nav-toggle{display:none;}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:80;
  background:rgba(5,10,22,.98);
  backdrop-filter:blur(10px);
  display:flex;
  flex-direction:column;
  padding:22px 20px 28px;
  transform:translateX(100%);
  opacity:0;
  pointer-events:none;
  transition:transform .28s ease, opacity .28s ease;
}
.drawer.is-open{transform:translateX(0);opacity:1;pointer-events:auto;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  font-size:18px;
  padding:12px 4px;
  color:var(--c-text-2);
  border-bottom:1px solid var(--c-line-soft);
}
.drawer-nav a.is-active{color:var(--c-glow);font-weight:700;}
.drawer-cta{margin-top:auto;padding-top:22px;}
.drawer-cta .btn{width:100%;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:88px 0 0;background:var(--c-bg-0);}
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:14px;
  color:var(--c-text-3);
  padding:12px 0;
  flex-wrap:wrap;
}
.crumb a{color:var(--c-text-3);transition:color .2s ease;}
.crumb a:hover{color:var(--c-glow);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--c-text-2);}

/* ---------- Banner ---------- */
.page-banner{
  position:relative;
  overflow:hidden;
  background:var(--c-bg-1);
  border-bottom:1px solid var(--c-line-soft);
}
.banner-bg{
  position:absolute;inset:0;
  background-size:cover;
  background-position:center;
  opacity:.24;
  filter:saturate(120%);
}
.page-banner::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(5,10,22,.94) 0%,rgba(5,10,22,.72) 52%,rgba(5,10,22,.5) 100%);
}
.banner-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
  min-height:320px;
  padding-top:40px;
  padding-bottom:40px;
}
.banner-text h1{
  font-size:clamp(30px,4.4vw,48px);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.01em;
  margin:14px 0 16px;
}
.banner-text p{
  color:var(--c-text-2);
  font-size:16.5px;
  max-width:560px;
}
.banner-meta{
  display:flex;flex-wrap:wrap;gap:18px;
  margin-top:22px;
  font-size:13.5px;
  color:var(--c-text-3);
}
.banner-meta strong{color:var(--c-text);font-weight:700;}
.banner-media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--glass-border);
  box-shadow:var(--sh-card);
  background:var(--glass);
}
.banner-media img{width:100%;height:236px;object-fit:cover;border-radius:0;}
.banner-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,22,0) 40%,rgba(5,10,22,.65) 100%);
}
.banner-tag{
  position:absolute;
  left:16px;bottom:14px;
  z-index:2;
  display:flex;align-items:center;gap:8px;
  font-size:13px;
  color:var(--c-text);
  background:rgba(9,17,39,.72);
  border:1px solid var(--glass-border);
  border-radius:var(--r-pill);
  padding:5px 14px;
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--c-ok);box-shadow:0 0 8px rgba(53,224,161,.9);}

/* ---------- 区块 ---------- */
.section{padding:88px 0;}
.section--alt{background:var(--c-bg-1);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.3;}
.section-head p{color:var(--c-text-2);margin-top:12px;}
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--c-glow);
  text-transform:uppercase;
  margin-bottom:14px;
}
.section-label::before{content:"";width:22px;height:2px;background:var(--c-glow);border-radius:2px;box-shadow:0 0 8px rgba(63,224,255,.8);}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--c-line-soft);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.stat-cell{
  background:var(--c-bg-0);
  padding:26px 24px;
}
.stat-cell .val{
  font-size:28px;font-weight:800;
  font-variant-numeric:tabular-nums;
  color:var(--c-text);
  display:flex;align-items:baseline;gap:6px;
}
.stat-cell .val span{font-size:14px;font-weight:600;color:var(--c-text-3);}
.stat-cell .k{margin-top:6px;font-size:13.5px;color:var(--c-text-3);}
.stat-cell:nth-child(2) .val{color:var(--c-glow);}
.stat-cell:nth-child(3) .val{color:var(--c-accent);}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;gap:24px;}
.card-grid--3{grid-template-columns:repeat(3,1fr);}
.card-grid--2{grid-template-columns:repeat(2,1fr);}
.card{
  position:relative;
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--glass-border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  padding:26px 24px 24px;
  transition:transform .24s ease, border-color .24s ease, box-shadow .24s ease;
  overflow:hidden;
}
.card:hover{transform:translateY(-4px);border-color:rgba(63,224,255,.42);box-shadow:0 22px 54px rgba(0,0,0,.5), 0 0 0 1px rgba(63,224,255,.18);}
.card-icon{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(42,107,255,.14);
  border:1px solid rgba(96,164,255,.28);
  color:var(--c-glow);
  margin-bottom:18px;
}
.card-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
.card h3{font-size:20px;font-weight:700;margin-bottom:10px;}
.card p{font-size:15px;color:var(--c-text-2);line-height:1.8;}
.card-index{
  position:absolute;top:20px;right:22px;
  font-size:13px;font-weight:800;
  font-variant-numeric:tabular-nums;
  color:var(--c-accent);
  opacity:.85;
}
.card-media{
  margin:-26px -24px 20px;
  height:168px;
  overflow:hidden;
  border-bottom:1px solid var(--c-line-soft);
}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}

/* ---------- 编号列表 ---------- */
.num-list{border-top:1px solid var(--c-line-soft);}
.num-item{
  position:relative;
  display:grid;
  grid-template-columns:64px 1fr;
  gap:20px;
  align-items:start;
  padding:24px 18px 24px 20px;
  border-bottom:1px solid var(--c-line-soft);
  transition:background-color .22s ease;
}
.num-item::before{
  content:"";
  position:absolute;left:0;top:16px;bottom:16px;
  width:3px;border-radius:3px;
  background:var(--c-glow);
  box-shadow:0 0 12px rgba(63,224,255,.85);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .26s ease;
}
.num-item:hover{background:rgba(255,255,255,.025);}
.num-item:hover::before{transform:scaleY(1);}
.num-item .idx{
  font-size:22px;font-weight:800;
  font-variant-numeric:tabular-nums;
  color:var(--c-brand);
  letter-spacing:.02em;
}
.num-item h3{font-size:19px;font-weight:700;margin-bottom:6px;}
.num-item p{font-size:15px;color:var(--c-text-2);}

/* ---------- 图文块 ---------- */
.split{
  display:grid;
  grid-template-columns:6fr 6fr;
  gap:48px;
  align-items:center;
}
.split--reverse .split-media{order:2;}
.split-media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--glass-border);
  box-shadow:var(--sh-card);
  background:var(--c-bg-2);
}
.split-media img{width:100%;height:300px;object-fit:cover;border-radius:0;}
.split-body h3{font-size:24px;font-weight:700;margin-bottom:14px;}
.split-body p{color:var(--c-text-2);}
.check-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.check-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:15px;color:var(--c-text-2);
}
.check-list svg{
  width:18px;height:18px;flex-shrink:0;margin-top:5px;
  fill:none;stroke:var(--c-ok);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;
}

/* ---------- FAQ Accordion ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-aside{position:sticky;top:96px;}
.faq-aside h2{font-size:30px;font-weight:700;line-height:1.32;}
.faq-aside p{color:var(--c-text-2);margin-top:14px;font-size:15.5px;}
.faq-aside .badge{margin-top:20px;}

.accordion{border:none;background:transparent;}
.accordion .accordion-item{
  border:none;
  border-bottom:1px solid var(--c-line-soft);
  background:transparent;
  position:relative;
}
.accordion .accordion-item:first-child{border-top:1px solid var(--c-line-soft);}
.accordion .accordion-title{
  position:relative;
  display:block;
  padding:22px 52px 22px 20px;
  font-size:17px;
  font-weight:600;
  color:var(--c-text);
  background:transparent;
  border:none;
  line-height:1.6;
  transition:color .2s ease, background-color .2s ease;
}
.accordion .accordion-title:hover{background:rgba(255,255,255,.025);color:var(--c-glow);}
.accordion .accordion-title::before{
  content:"+";
  position:absolute;
  right:18px;top:50%;
  transform:translateY(-50%);
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--c-text-3);
  margin:0;
  transition:color .2s ease, transform .28s ease;
}
.accordion .accordion-item.is-active .accordion-title{
  color:var(--c-glow);
  font-weight:700;
}
.accordion .accordion-item.is-active .accordion-title::before{
  content:"−";
  color:var(--c-glow);
  transform:translateY(-50%) rotate(180deg);
}
.accordion .accordion-item.is-active::after{
  content:"";
  position:absolute;left:0;top:18px;bottom:18px;
  width:3px;border-radius:3px;
  background:var(--c-glow);
  box-shadow:0 0 12px rgba(63,224,255,.85);
}
.accordion .accordion-content{
  padding:0 52px 24px 20px;
  border:none;
  background:transparent;
  color:var(--c-text-2);
  font-size:15.5px;
  line-height:1.85;
}
.accordion .accordion-content p{color:var(--c-text-2);}

/* ---------- CTA 收口条 ---------- */
.cta-band{
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--glass-border);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  padding:36px 38px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:-10%;top:50%;
  width:60%;height:1px;
  background:linear-gradient(90deg,rgba(63,224,255,0) 0%,rgba(63,224,255,.5) 50%,rgba(63,224,255,0) 100%);
  opacity:.35;
  transform:rotate(-6deg);
  pointer-events:none;
}
.cta-band h2{font-size:24px;font-weight:700;}
.cta-band p{color:var(--c-text-2);font-size:15px;margin-top:8px;}
.cta-actions{display:flex;gap:14px;flex-shrink:0;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-bg-0);
  border-top:1px solid rgba(63,224,255,.22);
  padding:64px 0 26px;
  box-shadow:0 -1px 24px rgba(63,224,255,.08);
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
}
.fcol h4{
  font-size:14px;font-weight:700;
  margin-bottom:18px;
  position:relative;
  padding-left:12px;
}
.fcol h4::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:13px;border-radius:2px;background:var(--c-brand);
  box-shadow:0 0 8px rgba(42,107,255,.8);
}
.fcol ul{display:flex;flex-direction:column;gap:11px;}
.fcol ul a{font-size:14.5px;color:var(--c-text-2);transition:color .2s ease;}
.fcol ul a:hover{color:var(--c-glow);}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;color:var(--c-text-2);max-width:320px;}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:8px;font-size:13.5px;color:var(--c-text-3);}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--c-line-soft);
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:22px;
  font-size:13px;
  color:var(--c-text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-menu{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{padding:0 20px;}
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .banner-inner{grid-template-columns:1fr;gap:32px;min-height:0;padding-top:32px;padding-bottom:36px;}
  .banner-media img{height:220px;}
  .crumb-bar{padding-top:76px;}
  .card-grid--3{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:32px;}
  .split--reverse .split-media{order:0;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-aside{position:static;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:640px){
  body{font-size:15.5px;}
  .site-header{height:56px;}
  .nav-inner{padding:0 16px;gap:12px;}
  .container{padding:0 16px;}
  .brand-text{font-size:17px;}
  .brand-mark{width:30px;height:30px;}
  .section{padding:48px 0;}
  .crumb-bar{padding-top:66px;}
  .banner-text h1{font-size:30px;}
  .banner-media img{height:190px;}
  .stat-strip{grid-template-columns:1fr;}
  .card-grid--3,.card-grid--2{grid-template-columns:1fr;}
  .split-media img{height:210px;}
  .num-item{grid-template-columns:44px 1fr;gap:14px;padding:20px 10px 20px 16px;}
  .faq-aside h2{font-size:24px;}
  .accordion .accordion-title{font-size:16px;padding:18px 44px 18px 16px;}
  .accordion .accordion-content{padding:0 20px 20px 16px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px;gap:22px;}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:10px;text-align:center;}
  .btn{min-height:46px;}
}