/* roulang page: index */
:root{
  --bg:#05121c;
  --bg-alt:#081c29;
  --bg-deep:#030c13;
  --surface:#0d2637;
  --surface-2:#123143;
  --surface-3:#16394d;
  --line:rgba(140,196,224,.16);
  --line-strong:rgba(140,196,224,.32);
  --text:#e8f3fa;
  --text-soft:#c3d8e6;
  --muted:#93aec1;
  --brand:#2ad4e6;
  --brand-deep:#11a6c4;
  --brand-soft:rgba(42,212,230,.12);
  --accent:#ffb648;
  --accent-soft:rgba(255,182,72,.14);
  --radius:14px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow:0 12px 28px rgba(0,0,0,.35);
  --shadow-hover:0 20px 42px rgba(0,0,0,.5);
  --container:1180px;
  --ease:.22s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.78;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure{margin:0;padding:0}
h1,h2,h3,h4{font-weight:800;line-height:1.35;letter-spacing:-.01em;color:#fff}
ul,ol{list-style:none}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),opacity var(--ease)}
a:hover{color:#6ceaf6}
img{max-width:100%;display:block;border:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(5,18,28,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(140,196,224,.12);
  box-shadow:0 8px 24px rgba(0,0,0,.32);
}
.nav-panel{
  position:relative;
  display:flex;align-items:center;gap:18px;
  min-height:64px;padding:9px 12px;margin:8px 0;
  background:linear-gradient(180deg,rgba(18,49,67,.92),rgba(11,32,45,.92));
  border:1px solid var(--line);
  border-radius:16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,var(--brand),var(--brand-deep));
  box-shadow:0 6px 16px rgba(42,212,230,.28);
  flex-shrink:0;
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#04121b;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:16px;font-weight:800;color:#fff;letter-spacing:.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
  display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:600;color:var(--text-soft);
  border:1px solid transparent;
  transition:all var(--ease);
  white-space:nowrap;
}
.nav-item:hover{color:#fff;background:var(--brand-soft);border-color:var(--line-strong)}
.nav-item.is-active{
  color:#04121b;
  background:linear-gradient(180deg,#4ce5f2,#1cbcd0);
  border-color:#5ceaf6;
  font-weight:800;
  box-shadow:0 6px 16px rgba(42,212,230,.28);
}
.nav-item.is-active:hover{color:#04121b}
.nav-cta{margin-left:10px;flex-shrink:0}
.nav-toggle{
  display:none;margin-left:auto;
  width:42px;height:42px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:all var(--ease)}
.nav-panel.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-panel.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-panel.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:9px;
  font-size:14px;font-weight:700;line-height:1.2;
  border:1px solid transparent;
  transition:all var(--ease);
  min-height:42px;
  white-space:nowrap;
}
.btn-primary{
  color:#04121b;
  background:linear-gradient(180deg,#4ce5f2,#1cbcd0);
  box-shadow:0 8px 20px rgba(42,212,230,.3);
}
.btn-primary:hover{color:#04121b;transform:translateY(-2px);box-shadow:0 12px 26px rgba(42,212,230,.42)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  color:var(--text);background:rgba(255,255,255,.04);
  border-color:var(--line-strong);
}
.btn-ghost:hover{color:#fff;border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.btn-accent{
  color:#20140a;
  background:linear-gradient(180deg,#ffcb70,#f7a52a);
  box-shadow:0 8px 20px rgba(255,182,72,.28);
}
.btn-accent:hover{color:#20140a;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,182,72,.4)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:66px 0 96px;
  background:var(--bg-deep) url('/assets/images/67e99729c2bb90fe.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(112deg,rgba(3,12,19,.97) 0%,rgba(3,12,19,.9) 42%,rgba(3,12,19,.6) 100%);
}
.hero::after{
  content:"";position:absolute;left:-6%;right:-6%;bottom:-52px;height:120px;
  background:var(--bg);transform:rotate(-1.5deg);transform-origin:left center;
}
.hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--brand-soft);border:1px solid rgba(42,212,230,.35);
  font-size:13px;font-weight:700;color:#8ff2fb;margin-bottom:20px;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px rgba(42,212,230,.2)}
.hero h1{font-size:40px;line-height:1.28;margin-bottom:16px;letter-spacing:-.015em}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:16px;font-weight:600;color:#bfe3ef;margin-bottom:16px}
.hero-text{font-size:15px;color:var(--text-soft);line-height:1.85;margin-bottom:24px;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.check-strip{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 18px;
  padding:16px 18px;border-radius:var(--radius);
  background:rgba(13,38,55,.72);border:1px solid var(--line);
}
.check-item{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--text-soft);line-height:1.5}
.check-item svg{width:16px;height:16px;flex-shrink:0;margin-top:3px;fill:none;stroke:var(--brand);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.hero-visual{position:relative}
.hero-shot{
  position:relative;border-radius:18px;overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:0 26px 60px rgba(0,0,0,.6);
  transform:rotate(-1.4deg);
}
.hero-shot img{width:100%;height:340px;object-fit:cover}
.hero-shot::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(4,18,27,0) 40%,rgba(4,18,27,.78) 100%);
}
.hero-float{
  position:absolute;left:-14px;bottom:26px;z-index:4;
  display:flex;align-items:center;gap:10px;
  padding:10px 16px;border-radius:12px;
  background:rgba(9,29,42,.94);border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
.hero-float strong{font-size:20px;color:var(--brand);font-weight:800;line-height:1}
.hero-float span{font-size:12.5px;color:var(--muted);line-height:1.4}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 13px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;
  color:#a9dbe8;background:rgba(42,212,230,.09);
  border:1px solid rgba(42,212,230,.28);
}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0;position:relative}
.section-alt{background:var(--bg-alt)}
.section-deep{background:var(--bg-deep)}
.section + .section{border-top:1px solid rgba(140,196,224,.07)}
.section-head{max-width:780px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;font-weight:800;letter-spacing:.12em;
  color:var(--brand);margin-bottom:12px;
}
.eyebrow::before{content:"";width:24px;height:2px;border-radius:2px;background:var(--brand)}
.section-head.center .eyebrow::after{content:"";width:24px;height:2px;border-radius:2px;background:var(--brand)}
.section-title{font-size:28px;line-height:1.36;margin-bottom:14px}
.section-title span{color:var(--brand)}
.section-desc{font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- 数据条 ---------- */
.stat-band{
  position:relative;z-index:4;margin-top:-46px;
}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);
}
.stat-item{background:var(--surface);padding:24px 20px;text-align:center;transition:background var(--ease)}
.stat-item:hover{background:var(--surface-2)}
.stat-num{font-size:30px;font-weight:800;color:var(--brand);line-height:1.1;letter-spacing:-.02em}
.stat-num small{font-size:14px;font-weight:700;color:var(--accent);margin-left:2px}
.stat-label{font-size:13px;color:var(--muted);margin-top:8px}

/* ---------- 网格与卡片 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease),background var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(42,212,230,.45);background:var(--surface-2)}
.feature-card{padding:26px 24px}
.icon-box{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);border:1px solid rgba(42,212,230,.3);
  margin-bottom:16px;
}
.icon-box svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.feature-card h3{font-size:17px;margin-bottom:9px}
.feature-card p{font-size:14px;color:var(--muted);line-height:1.75}

/* ---------- 图文交替 ---------- */
.band{
  display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;
  padding:34px 0;
}
.band + .band{border-top:1px dashed rgba(140,196,224,.14);margin-top:14px}
.band.reverse .band-media{order:2}
.band-media{border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);position:relative}
.band-media img{width:100%;height:300px;object-fit:cover;transition:transform .4s var(--ease)}
.band-media:hover img{transform:scale(1.04)}
.band-body h3{font-size:22px;margin-bottom:12px}
.band-body p{font-size:14.5px;color:var(--muted);line-height:1.85;margin-bottom:16px}
.point-list{display:flex;flex-direction:column;gap:10px}
.point-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-soft)}
.point-list li::before{
  content:"";width:7px;height:7px;border-radius:50%;flex-shrink:0;margin-top:9px;
  background:var(--brand);box-shadow:0 0 0 3px rgba(42,212,230,.16);
}

/* ---------- 场景矩阵 ---------- */
.scene-card{padding:24px 22px;display:flex;flex-direction:column;gap:10px}
.scene-top{display:flex;align-items:center;gap:11px}
.scene-num{
  width:34px;height:34px;flex-shrink:0;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;color:var(--brand);
  background:var(--brand-soft);border:1px solid rgba(42,212,230,.28);
}
.scene-card h3{font-size:16px}
.scene-card p{font-size:13.5px;color:var(--muted);line-height:1.7}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step}
.step-item{position:relative;padding:26px 22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);transition:all var(--ease)}
.step-item:hover{border-color:rgba(42,212,230,.45);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.step-item::before{
  counter-increment:step;content:"0" counter(step);
  display:block;font-size:13px;font-weight:800;color:var(--accent);
  letter-spacing:.1em;margin-bottom:12px;
}
.step-item h3{font-size:16px;margin-bottom:8px}
.step-item p{font-size:13.5px;color:var(--muted);line-height:1.7}
.step-item::after{
  content:"";position:absolute;top:34px;right:-12px;width:12px;height:1px;
  background:var(--line-strong);
}
.step-item:last-child::after{display:none}

/* ---------- 截图舞台 ---------- */
.stage{
  display:grid;grid-template-columns:1.25fr .75fr;gap:38px;align-items:center;
  padding:26px;border-radius:18px;
  background:linear-gradient(160deg,rgba(18,49,67,.92),rgba(8,28,41,.92));
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.stage-img{border-radius:14px;overflow:hidden;border:1px solid var(--line-strong);box-shadow:0 20px 44px rgba(0,0,0,.5)}
.stage-img img{width:100%;height:330px;object-fit:cover}
.stage-body h3{font-size:21px;margin-bottom:12px}
.stage-body p{font-size:14px;color:var(--muted);line-height:1.85;margin-bottom:18px}

/* ---------- 证言 ---------- */
.quote-card{padding:26px 24px;display:flex;flex-direction:column;gap:16px}
.quote-mark{width:26px;height:26px;fill:rgba(42,212,230,.35)}
.quote-card p{font-size:14.5px;color:var(--text-soft);line-height:1.85}
.quote-user{display:flex;align-items:center;gap:11px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.avatar{
  width:38px;height:38px;border-radius:50%;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;color:#04121b;
  background:linear-gradient(145deg,#5ceaf6,#17a8c0);
}
.quote-user strong{display:block;font-size:14px;color:#fff;line-height:1.4}
.quote-user span{display:block;font-size:12.5px;color:var(--muted);line-height:1.4}

/* ---------- 资源包对比 ---------- */
.plan-card{padding:28px 24px;display:flex;flex-direction:column;position:relative}
.plan-card.recommended{border-color:rgba(42,212,230,.55);background:linear-gradient(180deg,rgba(18,49,67,.98),rgba(13,38,55,.98));box-shadow:0 20px 44px rgba(42,212,230,.14)}
.plan-flag{
  position:absolute;top:-12px;left:24px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:800;color:#04121b;
  background:linear-gradient(180deg,#4ce5f2,#1cbcd0);
}
.plan-card h3{font-size:19px;margin-bottom:8px}
.plan-sub{font-size:13px;color:var(--muted);margin-bottom:18px;line-height:1.7}
.plan-list{display:flex;flex-direction:column;gap:11px;margin-bottom:22px}
.plan-list li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--text-soft);line-height:1.6}
.plan-list li svg{width:15px;height:15px;flex-shrink:0;margin-top:4px;fill:none;stroke:var(--brand);stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round}
.plan-list li.off{color:#6d8598}
.plan-list li.off svg{stroke:#4a6273}
.plan-foot{margin-top:auto;font-size:13px;font-weight:700;color:var(--accent)}

/* ---------- 分类入口墙 ---------- */
.cat-card{padding:26px 24px;display:flex;flex-direction:column;gap:12px;text-decoration:none;color:inherit}
.cat-card:hover{color:inherit}
.cat-badge{
  display:inline-flex;align-self:flex-start;align-items:center;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:800;letter-spacing:.06em;
  color:#8ff2fb;background:var(--brand-soft);border:1px solid rgba(42,212,230,.3);
}
.cat-card h3{font-size:18px;color:#fff}
.cat-card p{font-size:14px;color:var(--muted);line-height:1.75}
.cat-more{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:700;color:var(--brand);margin-top:auto;padding-top:8px}
.cat-more svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease)}
.cat-card:hover .cat-more svg{transform:translateX(4px)}

/* ---------- CMS 卡片 ---------- */
.topic-card{overflow:hidden;display:flex;flex-direction:column;color:inherit}
.topic-card:hover{color:inherit}
.topic-thumb{position:relative;height:158px;overflow:hidden;background:var(--surface-2)}
.topic-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.topic-card:hover .topic-thumb img{transform:scale(1.06)}
.topic-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:9px;flex:1}
.topic-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted)}
.topic-meta .pill{padding:2px 9px;border-radius:var(--radius-pill);background:var(--brand-soft);color:#8ff2fb;font-weight:700}
.topic-body h3{font-size:15.5px;line-height:1.5;color:#fff;transition:color var(--ease)}
.topic-card:hover h3{color:var(--brand)}
.topic-body p{font-size:13px;color:var(--muted);line-height:1.7}
.empty-hint{
  padding:36px 24px;text-align:center;color:var(--muted);font-size:14px;
  border:1px dashed var(--line-strong);border-radius:var(--radius);background:rgba(13,38,55,.5);
}

/* ---------- 资讯列表 ---------- */
.news-layout{display:grid;grid-template-columns:1.55fr .95fr;gap:28px;align-items:start}
.news-list{display:flex;flex-direction:column;gap:14px}
.news-item{
  display:grid;grid-template-columns:104px 1fr;gap:16px;
  padding:14px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--line);
  color:inherit;transition:all var(--ease);
}
.news-item:hover{color:inherit;border-color:rgba(42,212,230,.45);transform:translateY(-3px);box-shadow:var(--shadow-hover);background:var(--surface-2)}
.news-thumb{border-radius:10px;overflow:hidden;height:76px;background:var(--surface-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-text h3{font-size:15px;line-height:1.5;margin-bottom:6px;color:#fff}
.news-item:hover .news-text h3{color:var(--brand)}
.news-text p{font-size:13px;color:var(--muted);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;gap:12px;font-size:12px;color:#7d97a9;margin-top:8px}
.side-panel{padding:22px 20px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.side-panel h3{font-size:16px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.side-list{display:flex;flex-direction:column;gap:14px}
.side-list a{display:flex;gap:11px;color:var(--text-soft);font-size:13.5px;line-height:1.6}
.side-list a:hover{color:var(--brand)}
.side-index{
  width:22px;height:22px;flex-shrink:0;border-radius:6px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;color:var(--brand);background:var(--brand-soft);
}
.side-list a:nth-child(-n+3) .side-index{color:#20140a;background:linear-gradient(180deg,#ffcb70,#f7a52a)}

/* ---------- 口碑气泡 ---------- */
.bubble-wall{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.bubble{
  padding:18px 20px;border-radius:16px 16px 16px 4px;
  background:var(--surface);border:1px solid var(--line);
  font-size:13.5px;color:var(--text-soft);line-height:1.75;
  transition:all var(--ease);
}
.bubble:hover{transform:translateY(-3px);border-color:rgba(42,212,230,.4);background:var(--surface-2)}
.bubble b{display:block;color:var(--brand);font-size:12.5px;margin-top:10px;font-weight:700}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:border-color var(--ease);
}
.faq-item[open]{border-color:rgba(42,212,230,.45)}
.faq-item summary{
  list-style:none;cursor:pointer;
  padding:18px 22px;font-size:15.5px;font-weight:700;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:400;color:var(--brand);
  line-height:1;transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 22px 20px;font-size:14px;color:var(--muted);line-height:1.85}

/* ---------- 下载引导 ---------- */
.dl-band{
  position:relative;overflow:hidden;
  padding:58px 44px;border-radius:20px;
  background:linear-gradient(120deg,rgba(17,166,196,.24),rgba(13,38,55,.96) 60%),
             url('/assets/images/2708f0d0174eb0b6.webp') center/cover no-repeat;
  border:1px solid var(--line-strong);
  box-shadow:0 26px 60px rgba(0,0,0,.45);
}
.dl-band::before{content:"";position:absolute;inset:0;background:linear-gradient(110deg,rgba(4,16,24,.92),rgba(4,16,24,.66));}
.dl-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.3fr .7fr;gap:34px;align-items:center}
.dl-inner h2{font-size:29px;line-height:1.36;margin-bottom:14px}
.dl-inner p{font-size:14.5px;color:var(--text-soft);line-height:1.85;max-width:620px}
.dl-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}
.dl-note{font-size:12.5px;color:var(--muted);text-align:center;line-height:1.6}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr;gap:44px;padding-bottom:36px}
.footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.85;margin-top:14px;max-width:380px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:13.5px;color:var(--muted)}
.footer-col ul a:hover{color:var(--brand)}
.footer-bottom{
  border-top:1px solid var(--line);padding-top:22px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:#6f8899;
}
.footer-bottom a{color:#8aa5b7}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero h1{font-size:34px}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-shot img{height:290px}
  .hero-text{max-width:100%}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-item:nth-child(2)::after{display:none}
  .stage{grid-template-columns:1fr}
  .news-layout{grid-template-columns:1fr}
  .bubble-wall{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dl-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-links{
    display:none;position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:12px;border-radius:14px;
    background:rgba(11,32,45,.99);border:1px solid var(--line-strong);
    box-shadow:0 22px 48px rgba(0,0,0,.55);margin-left:0;
  }
  .nav-panel.nav-open .nav-links{display:flex}
  .nav-item{justify-content:flex-start;padding:12px 14px;font-size:14.5px;min-height:44px}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .hero{padding:48px 0 78px}
  .hero h1{font-size:29px}
  .hero-sub{font-size:15px}
  .section-title{font-size:23px}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .grid-4{grid-template-columns:1fr}
  .band{grid-template-columns:1fr;gap:24px}
  .band.reverse .band-media{order:0}
  .band-media img{height:236px}
  .check-strip{grid-template-columns:1fr}
  .bubble-wall{grid-template-columns:1fr}
  .dl-band{padding:40px 24px}
  .dl-inner h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .step-item::after{display:none}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero h1{font-size:25px}
  .hero-actions .btn{flex:1 1 100%}
  .brand-text{font-size:14.5px;white-space:normal;line-height:1.3;max-width:150px}
  .stat-grid{grid-template-columns:1fr}
  .stat-num{font-size:26px}
  .news-item{grid-template-columns:1fr}
  .news-thumb{height:140px}
  .hero-float{left:0;bottom:14px;padding:8px 12px}
  .stage{padding:16px}
  .stage-img img{height:220px}
}

/* roulang page: article */
:root{
 --bg:#05121c;
 --bg-alt:#081c29;
 --bg-deep:#030c13;
 --surface:#0d2637;
 --surface-2:#123143;
 --surface-3:#16394d;
 --line:rgba(140,196,224,.16);
 --line-strong:rgba(140,196,224,.32);
 --text:#e8f3fa;
 --text-soft:#c3d8e6;
 --muted:#93aec1;
 --brand:#2ad4e6;
 --brand-deep:#11a6c4;
 --brand-soft:rgba(42,212,230,.12);
 --accent:#ffb648;
 --accent-soft:rgba(255,182,72,.14);
 --radius:14px;
 --radius-sm:10px;
 --radius-pill:999px;
 --shadow:0 12px 28px rgba(0,0,0,.35);
 --shadow-hover:0 20px 42px rgba(0,0,0,.5);
 --container:1180px;
 --ease:.22s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;padding:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;line-height:1.78;color:var(--text);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 overflow-x:hidden;
}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),opacity var(--ease)}
a:hover{color:#6ceaf6}
img{max-width:100%;display:block;border:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:15px}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}

/* ---------- 顶部导航 ---------- */
.site-header{
 position:sticky;top:0;z-index:120;
 background:rgba(5,18,28,.88);
 backdrop-filter:blur(14px);
 -webkit-backdrop-filter:blur(14px);
 border-bottom:1px solid rgba(140,196,224,.12);
 box-shadow:0 8px 24px rgba(0,0,0,.32);
}
.nav-panel{
 position:relative;
 display:flex;align-items:center;gap:18px;
 min-height:64px;padding:9px 12px;margin:8px 0;
 background:linear-gradient(180deg,rgba(18,49,67,.92),rgba(11,32,45,.92));
 border:1px solid var(--line);
 border-radius:16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:34px;height:34px;border-radius:10px;
 display:inline-flex;align-items:center;justify-content:center;
 background:linear-gradient(145deg,var(--brand),var(--brand-deep));
 box-shadow:0 6px 16px rgba(42,212,230,.28);
 flex-shrink:0;
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#04121b;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:16px;font-weight:800;color:#fff;letter-spacing:.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
 display:inline-flex;align-items:center;
 padding:8px 14px;border-radius:var(--radius-sm);
 font-size:14px;font-weight:600;color:var(--text-soft);
 border:1px solid transparent;
 transition:all var(--ease);
 white-space:nowrap;
}
.nav-item:hover{color:#fff;background:var(--brand-soft);border-color:var(--line-strong)}
.nav-item.is-active{
 color:#04121b;
 background:linear-gradient(180deg,#4ce5f2,#1cbcd0);
 border-color:#5ceaf6;
 font-weight:800;
 box-shadow:0 6px 16px rgba(42,212,230,.28);
}
.nav-item.is-active:hover{color:#04121b}
.nav-cta{margin-left:10px;flex-shrink:0}
.nav-toggle{
 display:none;margin-left:auto;
 width:42px;height:42px;border-radius:var(--radius-sm);
 border:1px solid var(--line);background:rgba(255,255,255,.04);
 flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:all var(--ease)}
.nav-panel.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-panel.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-panel.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:11px 22px;border-radius:9px;
 font-size:14px;font-weight:700;line-height:1.2;
 border:1px solid transparent;
 transition:all var(--ease);
 min-height:42px;
 white-space:nowrap;
}
.btn-primary{color:#04121b;background:linear-gradient(180deg,#4ce5f2,#1cbcd0);box-shadow:0 8px 20px rgba(42,212,230,.3)}
.btn-primary:hover{color:#04121b;transform:translateY(-2px);box-shadow:0 12px 26px rgba(42,212,230,.42)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.04);border-color:var(--line-strong)}
.btn-ghost:hover{color:#fff;border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.btn-accent{color:#20140a;background:linear-gradient(180deg,#ffcb70,#f7a52a);box-shadow:0 8px 20px rgba(255,182,72,.28)}
.btn-accent:hover{color:#20140a;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,182,72,.4)}

/* ---------- 通用板块 ---------- */
.section{padding:60px 0}
.section.alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:30px}
.section-eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;font-weight:800;letter-spacing:.14em;
 text-transform:uppercase;color:var(--brand);margin-bottom:10px;
}
.section-eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
.section-head h2{font-size:26px;line-height:1.42;margin:0 0 10px;color:#fff;letter-spacing:-.01em}
.section-head p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.8}

/* ---------- 文章顶部矮横幅 ---------- */
.art-hero{
 position:relative;overflow:hidden;
 padding:40px 0 44px;
 background:var(--bg-deep) url('/assets/images/0598d130b10e3c7d.webp') center/cover no-repeat;
 border-bottom:1px solid var(--line);
}
.art-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(104deg,rgba(3,12,19,.97) 0%,rgba(3,12,19,.9) 52%,rgba(3,12,19,.66) 100%)}
.art-hero .container{position:relative;z-index:3}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb span.sep{opacity:.5}
.art-hero h1{
 font-size:34px;line-height:1.34;letter-spacing:-.015em;
 margin:14px 0 16px;max-width:920px;color:#fff;
}
.art-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.tag{
 display:inline-flex;align-items:center;
 padding:4px 11px;border-radius:var(--radius-pill);
 background:var(--brand-soft);border:1px solid rgba(42,212,230,.3);
 color:#8ff2fb;font-size:12px;font-weight:700;line-height:1.6;
}
.tag.accent{background:var(--accent-soft);border-color:rgba(255,182,72,.32);color:#ffcd85}
.art-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--muted)}
.art-meta span{display:inline-flex;align-items:center;gap:6px}
.art-meta i{width:5px;height:5px;border-radius:50%;background:var(--brand);display:inline-block;font-style:normal}
.art-lead{max-width:820px;margin:18px 0 0;color:var(--text-soft);font-size:15px;line-height:1.85}
.art-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* ---------- 正文 ---------- */
.article-section{padding:56px 0 64px;background:var(--bg)}
.prose{
 max-width:860px;margin:0 auto;
 background:var(--surface);
 border:1px solid var(--line);
 border-radius:var(--radius);
 padding:34px 36px;
 box-shadow:var(--shadow);
 font-size:15.5px;line-height:1.85;color:var(--text-soft);
}
.prose > *:first-child{margin-top:0}
.prose > *:last-child{margin-bottom:0}
.prose h2{
 font-size:22px;line-height:1.45;color:#fff;
 margin:34px 0 14px;padding-left:13px;
 border-left:3px solid var(--brand);
}
.prose h3{font-size:18px;line-height:1.5;color:#fff;margin:26px 0 10px}
.prose h4{font-size:16px;color:#fff;margin:20px 0 8px}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{margin:0 0 16px;padding-left:22px}
.prose li{margin-bottom:8px}
.prose li::marker{color:var(--brand)}
.prose strong{color:#fff}
.prose em{font-style:normal;color:var(--accent)}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.prose img{border-radius:12px;margin:18px 0;border:1px solid var(--line)}
.prose blockquote{
 margin:22px 0;padding:16px 20px;
 background:var(--brand-soft);
 border-left:3px solid var(--brand);
 border-radius:0 12px 12px 0;
 color:var(--text);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}
.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.prose th{background:var(--surface-2);color:#fff;font-weight:700}
.prose hr{border:0;border-top:1px solid var(--line);margin:28px 0}
.empty-state{
 max-width:640px;margin:0 auto;text-align:center;
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);padding:46px 28px;box-shadow:var(--shadow);
}
.empty-state h2{margin:0 0 12px;font-size:22px;color:#fff}
.empty-state p{margin:0 0 22px;color:var(--muted);font-size:14.5px}

/* ---------- 引用横幅 ---------- */
.quote-band{
 padding:52px 0;
 background:var(--bg-alt);
 border-top:1px solid var(--line);
 border-bottom:1px solid var(--line);
 position:relative;
}
.quote-band blockquote{
 margin:0 auto;max-width:880px;text-align:center;
 font-size:21px;line-height:1.72;font-weight:700;color:#eaf7ff;
 letter-spacing:-.005em;
}
.quote-band blockquote::before{
 content:"";display:block;width:44px;height:2px;
 background:var(--brand);border-radius:2px;margin:0 auto 20px;
}
.quote-band cite{
 display:block;margin-top:18px;font-style:normal;
 font-size:12.5px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;
}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card-grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.info-card{
 background:var(--surface);
 border:1px solid var(--line);
 border-radius:var(--radius);
 padding:22px 22px 20px;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
 display:flex;flex-direction:column;gap:10px;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.info-card .icon{
 width:38px;height:38px;border-radius:11px;
 display:inline-flex;align-items:center;justify-content:center;
 background:var(--brand-soft);border:1px solid rgba(42,212,230,.28);
}
.info-card .icon svg{width:19px;height:19px;fill:none;stroke:var(--brand);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.info-card h3{margin:0;font-size:16.5px;line-height:1.5;color:#fff}
.info-card p{margin:0;font-size:14px;line-height:1.78;color:var(--muted)}
.info-card .tag{align-self:flex-start;margin-top:2px}

/* ---------- 图文对照 ---------- */
.media-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.media-card{
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);overflow:hidden;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.media-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.media-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line)}
.media-card .media-body{padding:20px 22px 22px}
.media-card h3{margin:0 0 8px;font-size:17px;color:#fff;line-height:1.5}
.media-card p{margin:0 0 14px;font-size:14px;color:var(--muted);line-height:1.8}
.media-card ul{margin:0;padding-left:18px;font-size:13.5px;color:var(--text-soft)}
.media-card li{margin-bottom:6px}

/* ---------- 对照表 ---------- */
.table-wrap{
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius);overflow-x:auto;box-shadow:var(--shadow);
}
.check-table{width:100%;border-collapse:collapse;min-width:640px}
.check-table th{
 background:var(--surface-2);color:#fff;text-align:left;
 padding:15px 18px;font-size:14px;font-weight:800;white-space:nowrap;
}
.check-table td{
 padding:14px 18px;border-top:1px solid var(--line);
 color:var(--text-soft);font-size:14px;line-height:1.75;
}
.check-table tbody tr{transition:background var(--ease)}
.check-table tbody tr:hover{background:rgba(42,212,230,.05)}
.check-table td:first-child{color:#fff;font-weight:700;white-space:nowrap}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:12px}
.faq-item{
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius-sm);padding:0 20px;
 transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item[open]{border-color:rgba(42,212,230,.36);box-shadow:0 10px 26px rgba(0,0,0,.3)}
.faq-item summary{
 cursor:pointer;list-style:none;padding:17px 0;
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 font-size:15.5px;font-weight:700;color:#fff;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";flex-shrink:0;width:26px;height:26px;border-radius:8px;
 display:inline-flex;align-items:center;justify-content:center;
 background:var(--brand-soft);border:1px solid rgba(42,212,230,.28);
 color:var(--brand);font-size:17px;font-weight:700;line-height:1;
 transition:all var(--ease);
}
.faq-item[open] summary::after{content:"−";background:var(--accent-soft);border-color:rgba(255,182,72,.34);color:var(--accent)}
.faq-item p{margin:0 0 18px;color:var(--muted);font-size:14.5px;line-height:1.85}

/* ---------- 下载 CTA ---------- */
.cta-band{
 padding:58px 0;
 background:
  radial-gradient(900px 320px at 12% 0%,rgba(42,212,230,.14),transparent 70%),
  radial-gradient(700px 300px at 88% 100%,rgba(255,182,72,.12),transparent 70%),
  var(--bg-deep);
 border-top:1px solid var(--line);
}
.cta-inner{
 display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
 background:var(--surface);border:1px solid var(--line-strong);
 border-radius:18px;padding:30px 34px;box-shadow:var(--shadow);
}
.cta-inner h2{margin:0 0 8px;font-size:24px;color:#fff;line-height:1.42}
.cta-inner p{margin:0;color:var(--muted);font-size:14.5px;max-width:620px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 相关阅读 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.related-item{
 display:flex;gap:14px;align-items:flex-start;
 background:var(--surface);border:1px solid var(--line);
 border-radius:var(--radius-sm);padding:18px 20px;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.related-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.related-item .dot{
 width:8px;height:8px;border-radius:50%;background:var(--brand);
 margin-top:9px;flex-shrink:0;box-shadow:0 0 0 3px rgba(42,212,230,.16);
}
.related-item strong{display:block;color:#fff;font-size:15px;line-height:1.6;font-weight:700}
.related-item span{display:block;color:var(--muted);font-size:13px;margin-top:5px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:52px 0 0;color:var(--muted);font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;padding-bottom:38px}
.footer-brand p{margin:14px 0 0;line-height:1.85;max-width:400px;color:var(--muted)}
.footer-col h4{margin:0 0 14px;font-size:15px;color:#fff;font-weight:800}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.footer-col ul a{color:var(--muted);font-size:14px}
.footer-col ul a:hover{color:var(--brand)}
.footer-bottom{
 border-top:1px solid var(--line);padding:18px 0;
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 font-size:13px;color:#7d97a9;
}
.footer-bottom a{color:#8fb4c8}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
 .art-hero h1{font-size:30px}
 .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .card-grid.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .section{padding:52px 0}
 .prose{padding:28px 26px}
}
@media (max-width:960px){
 .nav-links{
  position:absolute;top:100%;left:0;right:0;
  display:none;flex-direction:column;align-items:stretch;gap:4px;
  margin-top:8px;padding:12px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow-hover);
 }
 .nav-panel.nav-open .nav-links{display:flex}
 .nav-item{width:100%;justify-content:flex-start;padding:11px 14px}
 .nav-toggle{display:flex}
 .nav-cta{display:none}
 .footer-grid{grid-template-columns:1fr 1fr}
 .footer-brand{grid-column:1 / -1}
}
@media (max-width:768px){
 .art-hero{padding:32px 0 34px}
 .art-hero h1{font-size:25px;line-height:1.4}
 .art-lead{font-size:14.5px}
 .section{padding:44px 0}
 .section-head h2{font-size:22px}
 .card-grid,.card-grid.cols-4,.media-grid,.related-grid{grid-template-columns:1fr}
 .prose{padding:24px 20px;font-size:15px}
 .prose h2{font-size:19.5px;margin-top:28px}
 .prose h3{font-size:17px}
 .quote-band{padding:40px 0}
 .quote-band blockquote{font-size:18px}
 .cta-inner{padding:24px 22px}
 .cta-inner h2{font-size:20px}
 .btn{width:100%}
 .art-hero-actions .btn{width:auto}
 .footer-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .art-hero h1{font-size:22px}
 .art-meta{font-size:12.5px;gap:6px 14px}
 .brand-text{font-size:14.5px}
 .art-hero-actions{flex-direction:column}
 .art-hero-actions .btn{width:100%}
 .cta-actions{width:100%}
 .faq-item{padding:0 16px}
 .faq-item summary{font-size:14.5px}
 .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
 --bg:#05121c;
 --bg-alt:#081c29;
 --bg-deep:#030c13;
 --surface:#0d2637;
 --surface-2:#123143;
 --surface-3:#16394d;
 --line:rgba(140,196,224,.16);
 --line-strong:rgba(140,196,224,.32);
 --text:#e8f3fa;
 --text-soft:#c3d8e6;
 --muted:#93aec1;
 --brand:#2ad4e6;
 --brand-deep:#11a6c4;
 --brand-soft:rgba(42,212,230,.12);
 --accent:#ffb648;
 --accent-soft:rgba(255,182,72,.14);
 --radius:14px;
 --radius-sm:10px;
 --radius-pill:999px;
 --shadow:0 12px 28px rgba(0,0,0,.35);
 --shadow-hover:0 20px 42px rgba(0,0,0,.5);
 --container:1180px;
 --ease:.22s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;padding:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;line-height:1.78;color:var(--text);background:var(--bg);
 -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),opacity var(--ease)}
a:hover{color:#6ceaf6}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 顶部导航 ---------- */
.site-header{
 position:sticky;top:0;z-index:120;
 background:rgba(5,18,28,.88);
 backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
 border-bottom:1px solid rgba(140,196,224,.12);
 box-shadow:0 8px 24px rgba(0,0,0,.32);
}
.nav-panel{
 position:relative;display:flex;align-items:center;gap:18px;
 min-height:64px;padding:9px 12px;margin:8px 0;
 background:linear-gradient(180deg,rgba(18,49,67,.92),rgba(11,32,45,.92));
 border:1px solid var(--line);border-radius:16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:34px;height:34px;border-radius:10px;
 display:inline-flex;align-items:center;justify-content:center;
 background:linear-gradient(145deg,var(--brand),var(--brand-deep));
 box-shadow:0 6px 16px rgba(42,212,230,.28);flex-shrink:0;
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#04121b;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:16px;font-weight:800;color:#fff;letter-spacing:.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
 display:inline-flex;align-items:center;padding:8px 14px;border-radius:var(--radius-sm);
 font-size:14px;font-weight:600;color:var(--text-soft);
 border:1px solid transparent;transition:all var(--ease);white-space:nowrap;
}
.nav-item:hover{color:#fff;background:var(--brand-soft);border-color:var(--line-strong)}
.nav-item.is-active{
 color:#04121b;background:linear-gradient(180deg,#4ce5f2,#1cbcd0);
 border-color:#5ceaf6;font-weight:800;box-shadow:0 6px 16px rgba(42,212,230,.28);
}
.nav-item.is-active:hover{color:#04121b}
.nav-cta{margin-left:10px;flex-shrink:0}
.nav-toggle{
 display:none;margin-left:auto;width:42px;height:42px;border-radius:var(--radius-sm);
 border:1px solid var(--line);background:rgba(255,255,255,.04);
 flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:all var(--ease)}
.nav-panel.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-panel.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-panel.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:11px 22px;border-radius:9px;font-size:14px;font-weight:700;line-height:1.2;
 border:1px solid transparent;transition:all var(--ease);min-height:42px;white-space:nowrap;
}
.btn-primary{color:#04121b;background:linear-gradient(180deg,#4ce5f2,#1cbcd0);box-shadow:0 8px 20px rgba(42,212,230,.3)}
.btn-primary:hover{color:#04121b;transform:translateY(-2px);box-shadow:0 12px 26px rgba(42,212,230,.42)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.04);border-color:var(--line-strong)}
.btn-ghost:hover{color:#fff;border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.btn-accent{color:#20140a;background:linear-gradient(180deg,#ffcb70,#f7a52a);box-shadow:0 8px 20px rgba(255,182,72,.28)}
.btn-accent:hover{color:#20140a;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,182,72,.4)}

/* ---------- 通用板块 ---------- */
.section{padding:66px 0;position:relative}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:30px;max-width:760px}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;margin-bottom:12px;
 font-size:12.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#8ff2fb;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),transparent)}
.section-title{font-size:27px;line-height:1.4;font-weight:800;letter-spacing:-.01em;margin-bottom:10px}
.section-desc{font-size:15px;color:var(--muted);line-height:1.82}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ---------- Hero ---------- */
.hero-cat{
 position:relative;overflow:hidden;padding:56px 0 70px;
 background:var(--bg-deep) url('/assets/images/0598d130b10e3c7d.webp') center/cover no-repeat;
}
.hero-cat::before{
 content:"";position:absolute;inset:0;
 background:linear-gradient(112deg,rgba(3,12,19,.97) 0%,rgba(3,12,19,.9) 46%,rgba(3,12,19,.6) 100%);
}
.hero-cat::after{
 content:"";position:absolute;left:-6%;right:-6%;bottom:-56px;height:110px;
 background:var(--bg);transform:rotate(-1.4deg);transform-origin:left center;
}
.hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--radius-pill);
 background:var(--brand-soft);border:1px solid rgba(42,212,230,.35);
 font-size:13px;font-weight:700;color:#8ff2fb;margin-bottom:18px;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px rgba(42,212,230,.2)}
.hero-cat h1{font-size:38px;line-height:1.3;font-weight:800;letter-spacing:-.015em;margin-bottom:14px}
.hero-cat h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:16px;font-weight:600;color:#bfe3ef;margin-bottom:14px}
.hero-text{font-size:15px;color:var(--text-soft);line-height:1.85;margin-bottom:24px;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px}
.hero-tags li{
 padding:5px 13px;border-radius:var(--radius-pill);font-size:12.5px;font-weight:600;
 color:var(--text-soft);background:rgba(255,255,255,.05);border:1px solid var(--line);
}
.hero-panel{
 background:linear-gradient(180deg,rgba(18,49,67,.94),rgba(8,28,41,.94));
 border:1px solid var(--line-strong);border-radius:16px;
 padding:22px 22px 20px;box-shadow:var(--shadow);
}
.panel-title{font-size:15px;font-weight:800;color:#fff;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.panel-title::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand)}
.roadmap{position:relative;margin-bottom:18px}
.roadmap li{display:flex;gap:12px;padding-bottom:16px;position:relative}
.roadmap li:last-child{padding-bottom:0}
.roadmap li::before{
 content:"";position:absolute;left:15px;top:30px;bottom:2px;width:1px;
 background:linear-gradient(180deg,rgba(42,212,230,.4),rgba(42,212,230,.05));
}
.roadmap li:last-child::before{display:none}
.node{
 flex-shrink:0;width:31px;height:31px;border-radius:9px;
 display:inline-flex;align-items:center;justify-content:center;
 font-size:12px;font-weight:800;color:#8ff2fb;
 background:rgba(42,212,230,.12);border:1px solid rgba(42,212,230,.32);
}
.roadmap strong{display:block;font-size:14px;font-weight:800;color:#fff;margin-bottom:2px}
.roadmap p{font-size:13px;color:var(--muted);line-height:1.7}
.sub-form{display:flex;gap:8px;margin-top:6px}
.sub-form input{
 flex:1 1 auto;min-width:0;padding:10px 12px;border-radius:9px;
 background:rgba(3,12,19,.6);border:1px solid var(--line-strong);
 color:var(--text);font-size:13.5px;transition:border-color var(--ease),box-shadow var(--ease);
 min-height:42px;
}
.sub-form input::placeholder{color:#7d95a6}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,212,230,.16)}
.sub-form .btn{padding:10px 16px;font-size:13.5px}
.sub-note{margin-top:10px;font-size:12.5px;color:var(--muted);line-height:1.7;min-height:22px}
.sub-note.is-ok{color:#8ff2fb}
.sub-note.is-err{color:#ffb0b0}

/* ---------- 技巧卡 ---------- */
.tech-card{
 background:linear-gradient(180deg,var(--surface),var(--surface-2));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 20px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
 display:flex;flex-direction:column;gap:12px;height:100%;
}
.tech-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.card-icon{
 width:40px;height:40px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
 background:var(--brand-soft);border:1px solid rgba(42,212,230,.3);
}
.card-icon svg{width:20px;height:20px;fill:none;stroke:var(--brand);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.tech-card h3{font-size:16.5px;font-weight:800;color:#fff;line-height:1.5}
.tech-card p{font-size:14px;color:var(--text-soft);line-height:1.8}
.tag-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:4px}
.tag{
 display:inline-block;padding:3px 10px;border-radius:var(--radius-pill);
 font-size:12px;font-weight:700;color:#8ff2fb;
 background:var(--brand-soft);border:1px solid rgba(42,212,230,.28);
}
.tag-accent{color:#ffd08a;background:var(--accent-soft);border-color:rgba(255,182,72,.3)}

/* ---------- 场景卡 ---------- */
.scene-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 overflow:hidden;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);height:100%;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.scene-figure{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-deep)}
.scene-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.scene-card:hover .scene-figure img{transform:scale(1.05)}
.scene-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:9px}
.scene-body h3{font-size:16px;font-weight:800;color:#fff}
.scene-body p{font-size:13.8px;color:var(--text-soft);line-height:1.78}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:1.02fr .98fr;gap:44px;align-items:center}
.split-figure{
 border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
 box-shadow:var(--shadow);background:var(--bg-deep);
}
.split-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.step-list{display:grid;gap:14px;margin-top:22px}
.step-item{
 display:flex;gap:14px;padding:16px 18px;border-radius:var(--radius-sm);
 background:rgba(255,255,255,.03);border:1px solid var(--line);
 transition:border-color var(--ease),background var(--ease);
}
.step-item:hover{border-color:var(--line-strong);background:rgba(42,212,230,.06)}
.step-num{
 flex-shrink:0;width:30px;height:30px;border-radius:9px;
 display:inline-flex;align-items:center;justify-content:center;
 font-size:13px;font-weight:800;color:#04121b;
 background:linear-gradient(180deg,#4ce5f2,#1cbcd0);
}
.step-item strong{display:block;font-size:15px;color:#fff;margin-bottom:3px}
.step-item p{font-size:13.8px;color:var(--text-soft);line-height:1.76}

/* ---------- 数据卡 ---------- */
.stat-card{
 background:linear-gradient(180deg,rgba(18,49,67,.9),rgba(8,28,41,.9));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 20px;transition:transform var(--ease),border-color var(--ease);
}
.stat-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.stat-num{font-size:30px;font-weight:800;line-height:1.15;color:var(--brand);letter-spacing:-.02em}
.stat-num small{font-size:14px;font-weight:700;color:var(--text-soft);margin-left:2px}
.stat-label{margin-top:6px;font-size:14px;font-weight:700;color:#fff}
.stat-desc{margin-top:6px;font-size:13px;color:var(--muted);line-height:1.72}

/* ---------- 误区对照 ---------- */
.compare-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:20px;display:flex;flex-direction:column;gap:12px;height:100%;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.compare-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.compare-line{display:flex;gap:10px;align-items:flex-start;font-size:14px;line-height:1.76}
.compare-line .mark{
 flex-shrink:0;width:22px;height:22px;border-radius:6px;
 display:inline-flex;align-items:center;justify-content:center;
 font-size:12px;font-weight:800;
}
.mark-no{background:rgba(255,120,120,.12);color:#ff9c9c;border:1px solid rgba(255,120,120,.28)}
.mark-yes{background:rgba(42,212,230,.12);color:#8ff2fb;border:1px solid rgba(42,212,230,.3)}
.compare-line strong{color:#fff}
.compare-line span.txt{color:var(--text-soft)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
 padding:0;overflow:hidden;transition:border-color var(--ease),background var(--ease);
}
.faq-item[open]{border-color:var(--line-strong);background:var(--surface-2)}
.faq-item summary{
 cursor:pointer;list-style:none;padding:16px 20px;
 font-size:15px;font-weight:700;color:#fff;
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 transition:color var(--ease);min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";flex-shrink:0;font-size:18px;font-weight:700;color:var(--brand);
 transition:transform var(--ease);line-height:1;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--brand)}
.faq-body{padding:0 20px 18px;font-size:14px;color:var(--text-soft);line-height:1.85}

/* ---------- 资讯列表 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.post-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:20px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
 display:flex;flex-direction:column;gap:10px;height:100%;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.post-card h3{font-size:15.5px;font-weight:800;line-height:1.6}
.post-card h3 a{color:#fff}
.post-card h3 a:hover{color:var(--brand)}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:12.5px;color:var(--muted)}
.post-excerpt{font-size:13.8px;color:var(--text-soft);line-height:1.78}
.empty-note{
 padding:26px;border-radius:var(--radius);border:1px dashed var(--line-strong);
 color:var(--muted);font-size:14px;background:rgba(255,255,255,.02);
}

/* ---------- 收口 CTA ---------- */
.cta-band{
 position:relative;overflow:hidden;
 background:linear-gradient(120deg,rgba(17,166,196,.22),rgba(8,28,41,.96) 60%),
            url('/assets/images/2708f0d0174eb0b6.webp') center/cover no-repeat;
 border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-inner{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
 padding:46px 0;
}
.cta-copy h2{font-size:25px;font-weight:800;line-height:1.45;margin-bottom:8px}
.cta-copy p{font-size:14.5px;color:var(--text-soft);max-width:620px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:52px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.35fr .85fr .9fr;gap:36px;padding-bottom:34px}
.footer-col h4{font-size:14px;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:9px}
.footer-col ul a{font-size:13.8px;color:var(--text-soft)}
.footer-col ul a:hover{color:var(--brand)}
.footer-brand p{margin-top:14px;font-size:13.5px;color:var(--muted);line-height:1.85;max-width:420px}
.footer-bottom{
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
 padding:18px 0 24px;border-top:1px solid var(--line);
 font-size:12.8px;color:var(--muted);
}
.footer-bottom a{color:var(--text-soft)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
 .hero-inner{grid-template-columns:1fr;gap:34px}
 .hero-cat h1{font-size:33px}
 .split{grid-template-columns:1fr;gap:28px}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-3,.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .footer-brand{grid-column:1 / -1}
}
@media (max-width:768px){
 .nav-links{
  display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;
  flex-direction:column;align-items:stretch;gap:6px;padding:12px;
  background:linear-gradient(180deg,rgba(18,49,67,.98),rgba(8,28,41,.98));
  border:1px solid var(--line-strong);border-radius:14px;box-shadow:var(--shadow);
  margin-left:0;z-index:130;
 }
 .nav-panel.nav-open .nav-links{display:flex}
 .nav-item{justify-content:center;padding:11px 14px}
 .nav-toggle{display:flex}
 .nav-cta{display:none}
 .section{padding:48px 0}
 .hero-cat{padding:42px 0 56px}
 .hero-cat h1{font-size:28px}
 .hero-sub{font-size:15px}
 .section-title{font-size:23px}
 .grid-2,.grid-3,.grid-4,.post-grid{grid-template-columns:1fr}
 .stat-num{font-size:26px}
 .cta-inner{padding:36px 0;flex-direction:column;align-items:flex-start}
 .cta-copy h2{font-size:21px}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
 .container{padding:0 16px}
 .hero-cat h1{font-size:24px}
 .hero-actions .btn,.cta-actions .btn{width:100%}
 .sub-form{flex-direction:column}
 .sub-form .btn{width:100%}
 .tech-card,.scene-body,.post-card{padding:18px}
 .footer-col h4{font-size:13.5px}
}

/* roulang page: category2 */
:root{
 --bg:#05121c;
 --bg-alt:#081c29;
 --bg-deep:#030c13;
 --surface:#0d2637;
 --surface-2:#123143;
 --surface-3:#16394d;
 --line:rgba(140,196,224,.16);
 --line-strong:rgba(140,196,224,.32);
 --text:#e8f3fa;
 --text-soft:#c3d8e6;
 --muted:#93aec1;
 --brand:#2ad4e6;
 --brand-deep:#11a6c4;
 --brand-soft:rgba(42,212,230,.12);
 --accent:#ffb648;
 --accent-soft:rgba(255,182,72,.14);
 --radius:14px;
 --radius-sm:10px;
 --radius-pill:999px;
 --shadow:0 12px 28px rgba(0,0,0,.35);
 --shadow-hover:0 20px 42px rgba(0,0,0,.5);
 --container:1180px;
 --ease:.22s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;padding:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;line-height:1.78;
 color:var(--text);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),opacity var(--ease)}
a:hover{color:#6ceaf6}
img{max-width:100%;display:block;border:0}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}

/* ---------- 顶部导航 ---------- */
.site-header{
 position:sticky;top:0;z-index:120;
 background:rgba(5,18,28,.88);
 backdrop-filter:blur(14px);
 -webkit-backdrop-filter:blur(14px);
 border-bottom:1px solid rgba(140,196,224,.12);
 box-shadow:0 8px 24px rgba(0,0,0,.32);
}
.nav-panel{
 position:relative;
 display:flex;align-items:center;gap:18px;
 min-height:64px;padding:9px 12px;margin:8px 0;
 background:linear-gradient(180deg,rgba(18,49,67,.92),rgba(11,32,45,.92));
 border:1px solid var(--line);
 border-radius:16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:34px;height:34px;border-radius:10px;
 display:inline-flex;align-items:center;justify-content:center;
 background:linear-gradient(145deg,var(--brand),var(--brand-deep));
 box-shadow:0 6px 16px rgba(42,212,230,.28);
 flex-shrink:0;
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#04121b;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:16px;font-weight:800;color:#fff;letter-spacing:.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
 display:inline-flex;align-items:center;
 padding:8px 14px;border-radius:var(--radius-sm);
 font-size:14px;font-weight:600;color:var(--text-soft);
 border:1px solid transparent;
 transition:all var(--ease);
 white-space:nowrap;
}
.nav-item:hover{color:#fff;background:var(--brand-soft);border-color:var(--line-strong)}
.nav-item.is-active{
 color:#04121b;
 background:linear-gradient(180deg,#4ce5f2,#1cbcd0);
 border-color:#5ceaf6;
 font-weight:800;
 box-shadow:0 6px 16px rgba(42,212,230,.28);
}
.nav-item.is-active:hover{color:#04121b}
.nav-cta{margin-left:10px;flex-shrink:0}
.nav-toggle{
 display:none;margin-left:auto;
 width:42px;height:42px;border-radius:var(--radius-sm);
 border:1px solid var(--line);background:rgba(255,255,255,.04);
 flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:all var(--ease)}
.nav-panel.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-panel.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-panel.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:11px 22px;border-radius:9px;
 font-size:14px;font-weight:700;line-height:1.2;
 border:1px solid transparent;
 transition:all var(--ease);
 min-height:42px;white-space:nowrap;
}
.btn-primary{color:#04121b;background:linear-gradient(180deg,#4ce5f2,#1cbcd0);box-shadow:0 8px 20px rgba(42,212,230,.3)}
.btn-primary:hover{color:#04121b;transform:translateY(-2px);box-shadow:0 12px 26px rgba(42,212,230,.42)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.04);border-color:var(--line-strong)}
.btn-ghost:hover{color:#fff;border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.btn-accent{color:#20140a;background:linear-gradient(180deg,#ffcb70,#f7a52a);box-shadow:0 8px 20px rgba(255,182,72,.28)}
.btn-accent:hover{color:#20140a;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,182,72,.4)}

/* ---------- Hero ---------- */
.hero-cat{
 position:relative;overflow:hidden;
 padding:56px 0 84px;
 background:var(--bg-deep) url('/assets/images/0598d130b10e3c7d.webp') center/cover no-repeat;
}
.hero-cat::before{
 content:"";position:absolute;inset:0;
 background:linear-gradient(112deg,rgba(3,12,19,.97) 0%,rgba(3,12,19,.9) 46%,rgba(3,12,19,.58) 100%);
}
.hero-cat::after{
 content:"";position:absolute;left:-6%;right:-6%;bottom:-58px;height:110px;
 background:var(--bg);transform:rotate(-1.4deg);transform-origin:left center;
}
.hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:1.04fr .96fr;gap:46px;align-items:center}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:var(--radius-pill);
 background:var(--brand-soft);border:1px solid rgba(42,212,230,.35);
 font-size:13px;font-weight:700;color:#8ff2fb;margin-bottom:18px;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px rgba(42,212,230,.2)}
.hero-cat h1{font-size:37px;line-height:1.3;margin-bottom:14px;letter-spacing:-.015em;color:#fff}
.hero-cat h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:15.5px;font-weight:600;color:#bfe3ef;margin-bottom:14px}
.hero-text{font-size:14.5px;color:var(--text-soft);line-height:1.85;margin-bottom:22px;max-width:580px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px}
.tag-pill{
 display:inline-flex;align-items:center;
 padding:6px 14px;border-radius:var(--radius-pill);
 font-size:12.5px;font-weight:600;color:var(--text-soft);
 background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.tag-pill:hover{color:#fff;border-color:var(--line-strong);background:var(--brand-soft)}

/* Hero 侧栏版本面板 */
.hero-card{
 background:linear-gradient(180deg,var(--surface-2),var(--surface));
 border:1px solid var(--line-strong);
 border-radius:var(--radius);
 padding:14px;
 box-shadow:var(--shadow);
}
.hero-card-media{
 position:relative;border-radius:var(--radius-sm);overflow:hidden;aspect-ratio:16/10;
 border:1px solid var(--line);
}
.hero-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.hero-card:hover .hero-card-media img{transform:scale(1.04)}
.hero-card-media::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(3,12,19,.06) 30%,rgba(3,12,19,.82));
}
.hero-card-media span{
 position:absolute;left:12px;bottom:10px;z-index:2;
 font-size:12.5px;font-weight:700;color:#d7f6fc;letter-spacing:.02em;
}
.hero-card-body{padding:14px 4px 4px}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.hero-card-top strong{font-size:14.5px;color:#fff;font-weight:800}
.hero-card-top .badge{flex-shrink:0}
.countdown{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.countdown .unit{
 background:var(--bg-deep);border:1px solid var(--line);
 border-radius:var(--radius-sm);padding:9px 4px;text-align:center;
}
.countdown .num{display:block;font-size:20px;font-weight:800;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
.countdown .lab{display:block;font-size:11px;color:var(--muted);letter-spacing:.1em;margin-top:2px}
.hero-card .btn{width:100%}
.hero-card-note{font-size:12px;color:var(--muted);margin-top:9px;line-height:1.6;text-align:center}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
.section--alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:740px;margin-bottom:34px}
.section-kicker{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12px;font-weight:800;letter-spacing:.16em;
 color:var(--brand);text-transform:uppercase;margin-bottom:10px;
}
.section-kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}
.section-head h2{font-size:27px;line-height:1.38;color:#fff;margin-bottom:10px;letter-spacing:-.01em}
.section-head p{font-size:14.5px;color:var(--text-soft);line-height:1.85}

/* ---------- 网格与卡片 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{
 background:linear-gradient(180deg,var(--surface),var(--surface-2));
 border:1px solid var(--line);
 border-radius:var(--radius);
 padding:20px;
 box-shadow:var(--shadow);
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.card h3{font-size:15.5px;color:#fff;font-weight:800;margin-bottom:9px;line-height:1.5}
.card p{font-size:13.8px;color:var(--text-soft);line-height:1.8}
.badge{
 display:inline-flex;align-items:center;
 padding:4px 10px;border-radius:var(--radius-pill);
 font-size:11.5px;font-weight:700;border:1px solid transparent;white-space:nowrap;
}
.badge-brand{color:#8ff2fb;background:var(--brand-soft);border-color:rgba(42,212,230,.35)}
.badge-accent{color:#ffd79a;background:var(--accent-soft);border-color:rgba(255,182,72,.35)}
.badge-soft{color:var(--text-soft);background:rgba(255,255,255,.05);border-color:var(--line)}

/* 版本卡 */
.version-card{display:flex;flex-direction:column}
.vc-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.vc-name{font-size:15.5px;font-weight:800;color:#fff}
.vc-list{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.vc-list li{position:relative;padding-left:16px;font-size:13.5px;color:var(--text-soft);line-height:1.72}
.vc-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand);opacity:.8}
.vc-meta{
 margin-top:16px;padding-top:13px;border-top:1px dashed var(--line);
 display:flex;align-items:center;justify-content:space-between;gap:8px;
 font-size:12.5px;color:var(--muted);
}
.vc-meta strong{color:var(--accent);font-size:13.5px}

/* 自检清单 */
.check-panel{
 display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:start;
}
.check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.check-item{
 display:flex;align-items:flex-start;gap:11px;
 background:rgba(255,255,255,.03);
 border:1px solid var(--line);
 border-radius:var(--radius-sm);
 padding:14px 15px;
 transition:all var(--ease);
}
.check-item:hover{border-color:var(--line-strong);background:var(--brand-soft);transform:translateY(-2px)}
.check-item svg{width:17px;height:17px;flex-shrink:0;margin-top:3px;fill:none;stroke:var(--brand);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.check-item strong{display:block;font-size:13.8px;color:#fff;margin-bottom:3px}
.check-item span{font-size:13px;color:var(--text-soft);line-height:1.7}
.check-figure{
 border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-strong);
 box-shadow:var(--shadow);position:relative;
}
.check-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.check-figure figcaption{
 position:absolute;left:0;right:0;bottom:0;
 padding:16px 18px;
 background:linear-gradient(180deg,rgba(3,12,19,0),rgba(3,12,19,.92));
 font-size:13px;color:#cfeaf5;line-height:1.7;
}

/* 安装步骤 */
.steps{display:grid;gap:13px}
.step{
 display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;
 background:linear-gradient(180deg,var(--surface),var(--surface-2));
 border:1px solid var(--line);border-radius:var(--radius);
 padding:18px 20px;
 transition:all var(--ease);
}
.step:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-hover)}
.step-num{
 width:42px;height:42px;border-radius:12px;flex-shrink:0;
 display:flex;align-items:center;justify-content:center;
 font-size:16px;font-weight:800;color:#04121b;
 background:linear-gradient(145deg,#4ce5f2,#1cbcd0);
 box-shadow:0 6px 16px rgba(42,212,230,.28);
}
.step h3{font-size:15.5px;color:#fff;margin-bottom:6px;font-weight:800}
.step p{font-size:13.8px;color:var(--text-soft);line-height:1.8}

/* 更新记录 */
.changelog{display:grid;gap:0}
.log-item{
 display:grid;grid-template-columns:96px 1fr;gap:20px;
 padding:20px 0;border-bottom:1px solid var(--line);
}
.log-item:last-child{border-bottom:0}
.log-ver{
 display:inline-flex;align-items:center;justify-content:center;
 align-self:start;
 padding:6px 0;border-radius:var(--radius-sm);
 font-size:13.5px;font-weight:800;color:var(--brand);
 background:var(--brand-soft);border:1px solid rgba(42,212,230,.32);
}
.log-item h3{font-size:15px;color:#fff;margin-bottom:6px;font-weight:800}
.log-item p{font-size:13.8px;color:var(--text-soft);line-height:1.8;margin-bottom:9px}
.log-tags{display:flex;flex-wrap:wrap;gap:7px}

/* FAQ */
.faq-list{max-width:900px}
.faq-item{
 background:linear-gradient(180deg,var(--surface),var(--surface-2));
 border:1px solid var(--line);border-radius:var(--radius-sm);
 margin-bottom:12px;overflow:hidden;transition:all var(--ease);
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow)}
.faq-item summary{
 list-style:none;cursor:pointer;position:relative;
 padding:16px 52px 16px 18px;
 font-size:14.8px;font-weight:700;color:var(--text);
 transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
 content:"";position:absolute;right:20px;top:50%;
 width:9px;height:9px;
 border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
 transform:translateY(-70%) rotate(45deg);
 transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-body{padding:0 18px 17px;font-size:13.8px;color:var(--text-soft);line-height:1.85}

/* CTA */
.cta-band{
 position:relative;overflow:hidden;
 border:1px solid var(--line-strong);border-radius:18px;
 padding:44px 40px;
 background:var(--bg-deep) url('/assets/images/cd0b96793c55cf75.webp') center/cover no-repeat;
 box-shadow:var(--shadow);
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(3,12,19,.96) 0%,rgba(3,12,19,.86) 55%,rgba(3,12,19,.66) 100%)}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px}
.cta-inner h2{font-size:25px;color:#fff;margin-bottom:9px;line-height:1.4}
.cta-inner p{font-size:14.2px;color:var(--text-soft);max-width:620px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:54px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.65fr 1fr 1fr;gap:40px;padding-bottom:36px}
.footer-col h4{font-size:14.5px;font-weight:800;color:#fff;margin:0 0 14px}
.footer-col ul{display:flex;flex-direction:column;gap:9px}
.footer-col ul a{font-size:13.5px;color:var(--muted)}
.footer-col ul a:hover{color:var(--brand)}
.footer-brand p{font-size:13.5px;color:var(--muted);line-height:1.82;margin-top:14px;max-width:430px}
.footer-bottom{
 display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
 padding:18px 0;border-top:1px solid var(--line);
 font-size:12.5px;color:var(--muted);line-height:1.7;
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
 .hero-inner{grid-template-columns:1fr;gap:34px}
 .hero-cat h1{font-size:32px}
 .grid-4{grid-template-columns:repeat(2,1fr)}
 .check-panel{grid-template-columns:1fr;gap:24px}
 .check-list{grid-template-columns:repeat(2,1fr)}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
 .footer-brand{grid-column:1 / -1}
}
@media (max-width:940px){
 .nav-panel{flex-wrap:wrap}
 .nav-toggle{display:flex}
 .nav-links{
  display:none;position:absolute;top:calc(100% + 8px);left:0;right:0;z-index:60;
  flex-direction:column;align-items:stretch;gap:4px;margin-left:0;
  background:var(--surface);border:1px solid var(--line-strong);
  border-radius:14px;padding:10px;box-shadow:var(--shadow-hover);
 }
 .nav-panel.nav-open .nav-links{display:flex}
 .nav-item{justify-content:flex-start;padding:11px 14px;min-height:44px}
 .nav-cta{display:none}
 .nav-panel.nav-open .nav-cta{display:inline-flex;width:100%;margin:8px 0 2px;min-height:44px}
}
@media (max-width:768px){
 .container{padding:0 16px}
 .section{padding:52px 0}
 .hero-cat{padding:42px 0 66px}
 .hero-cat h1{font-size:27px}
 .hero-sub{font-size:14.5px}
 .hero-text{font-size:14px}
 .section-head h2{font-size:22px}
 .grid-3,.grid-2{grid-template-columns:1fr}
 .grid-4{grid-template-columns:1fr}
 .check-list{grid-template-columns:1fr}
 .log-item{grid-template-columns:1fr;gap:10px}
 .log-ver{justify-self:start;padding:5px 16px}
 .cta-band{padding:32px 22px}
 .cta-inner h2{font-size:21px}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-bottom{flex-direction:column;align-items:flex-start}
 .step{grid-template-columns:1fr;gap:12px}
 .step-num{width:38px;height:38px;font-size:15px}
}
@media (max-width:520px){
 .hero-cat h1{font-size:23px;line-height:1.36}
 .hero-actions .btn{width:100%}
 .btn{font-size:13.5px;padding:11px 18px}
 .countdown .num{font-size:17px}
 .brand-text{font-size:14.5px}
 .hero-card-top{flex-wrap:wrap}
}
@media (prefers-reduced-motion:reduce){
 *{animation-duration:.001ms !important;transition-duration:.001ms !important}
 html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
 --bg:#05121c;
 --bg-alt:#081c29;
 --bg-deep:#030c13;
 --surface:#0d2637;
 --surface-2:#123143;
 --surface-3:#16394d;
 --line:rgba(140,196,224,.16);
 --line-strong:rgba(140,196,224,.32);
 --text:#e8f3fa;
 --text-soft:#c3d8e6;
 --muted:#93aec1;
 --brand:#2ad4e6;
 --brand-deep:#11a6c4;
 --brand-soft:rgba(42,212,230,.12);
 --accent:#ffb648;
 --accent-soft:rgba(255,182,72,.14);
 --radius:14px;
 --radius-sm:10px;
 --radius-pill:999px;
 --shadow:0 12px 28px rgba(0,0,0,.35);
 --shadow-hover:0 20px 42px rgba(0,0,0,.5);
 --container:1180px;
 --ease:.22s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
 margin:0;padding:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;line-height:1.78;
 color:var(--text);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 overflow-x:hidden;
}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),opacity var(--ease)}
a:hover{color:#6ceaf6}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
img{max-width:100%;display:block;border:0;height:auto}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;color:var(--text)}
p{margin:0 0 12px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 22px}

/* ---------- 顶部导航 ---------- */
.site-header{
 position:sticky;top:0;z-index:120;
 background:rgba(5,18,28,.88);
 backdrop-filter:blur(14px);
 -webkit-backdrop-filter:blur(14px);
 border-bottom:1px solid rgba(140,196,224,.12);
 box-shadow:0 8px 24px rgba(0,0,0,.32);
}
.nav-panel{
 position:relative;
 display:flex;align-items:center;gap:18px;
 min-height:64px;padding:9px 12px;margin:8px 0;
 background:linear-gradient(180deg,rgba(18,49,67,.92),rgba(11,32,45,.92));
 border:1px solid var(--line);
 border-radius:16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:34px;height:34px;border-radius:10px;
 display:inline-flex;align-items:center;justify-content:center;
 background:linear-gradient(145deg,var(--brand),var(--brand-deep));
 box-shadow:0 6px 16px rgba(42,212,230,.28);
 flex-shrink:0;
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#04121b;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:16px;font-weight:800;color:#fff;letter-spacing:.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{
 display:inline-flex;align-items:center;
 padding:8px 14px;border-radius:var(--radius-sm);
 font-size:14px;font-weight:600;color:var(--text-soft);
 border:1px solid transparent;
 transition:all var(--ease);
 white-space:nowrap;
}
.nav-item:hover{color:#fff;background:var(--brand-soft);border-color:var(--line-strong)}
.nav-item.is-active{
 color:#04121b;
 background:linear-gradient(180deg,#4ce5f2,#1cbcd0);
 border-color:#5ceaf6;
 font-weight:800;
 box-shadow:0 6px 16px rgba(42,212,230,.28);
}
.nav-item.is-active:hover{color:#04121b}
.nav-cta{margin-left:10px;flex-shrink:0}
.nav-toggle{
 display:none;margin-left:auto;
 width:42px;height:42px;border-radius:var(--radius-sm);
 border:1px solid var(--line);background:rgba(255,255,255,.04);
 flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:all var(--ease)}
.nav-panel.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-panel.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-panel.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 padding:11px 22px;border-radius:9px;
 font-size:14px;font-weight:700;line-height:1.2;
 border:1px solid transparent;
 transition:all var(--ease);
 min-height:42px;white-space:nowrap;
}
.btn-primary{color:#04121b;background:linear-gradient(180deg,#4ce5f2,#1cbcd0);box-shadow:0 8px 20px rgba(42,212,230,.3)}
.btn-primary:hover{color:#04121b;transform:translateY(-2px);box-shadow:0 12px 26px rgba(42,212,230,.42)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{color:var(--text);background:rgba(255,255,255,.04);border-color:var(--line-strong)}
.btn-ghost:hover{color:#fff;border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.btn-accent{color:#20140a;background:linear-gradient(180deg,#ffcb70,#f7a52a);box-shadow:0 8px 20px rgba(255,182,72,.28)}
.btn-accent:hover{color:#20140a;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,182,72,.4)}

/* ---------- Hero ---------- */
.hero3{
 position:relative;overflow:hidden;
 padding:52px 0 74px;
 background:var(--bg-deep) url('/assets/images/0598d130b10e3c7d.webp') center/cover no-repeat;
}
.hero3::before{
 content:"";position:absolute;inset:0;
 background:linear-gradient(108deg,rgba(3,12,19,.98) 0%,rgba(4,18,28,.92) 46%,rgba(4,18,28,.6) 100%);
}
.hero3 .container{position:relative;z-index:2}
.hero3-eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:var(--radius-pill);
 background:var(--brand-soft);border:1px solid rgba(42,212,230,.35);
 font-size:13px;font-weight:700;color:#8ff2fb;margin-bottom:18px;
}
.hero3-eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 3px rgba(42,212,230,.2)}
.hero3-strip{
 display:flex;flex-wrap:wrap;gap:8px;
 padding:9px;margin-bottom:22px;
 background:rgba(8,28,41,.72);
 border:1px solid var(--line);
 border-radius:var(--radius-pill);
 max-width:840px;
 backdrop-filter:blur(6px);
 -webkit-backdrop-filter:blur(6px);
}
.strip-pill{
 display:inline-flex;align-items:center;
 padding:7px 16px;border-radius:var(--radius-pill);
 font-size:13.5px;font-weight:700;color:var(--text-soft);
 border:1px solid transparent;
 transition:all var(--ease);
 min-height:36px;
}
.strip-pill:hover{color:#04121b;background:linear-gradient(180deg,#4ce5f2,#1cbcd0);border-color:#5ceaf6}
.hero3-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.hero3 h1{font-size:clamp(28px,3.6vw,42px);line-height:1.3;margin-bottom:14px}
.hero3 h1 em{font-style:normal;color:var(--brand)}
.hero3-sub{font-size:16px;font-weight:700;color:#bfe3ef;margin-bottom:14px}
.hero3-text{font-size:15px;color:var(--text-soft);line-height:1.85;margin-bottom:24px;max-width:600px}
.hero3-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}
.hero3-note{font-size:13px;color:var(--muted)}
.hero3-note strong{color:var(--accent)}
.hero-panel{
 background:linear-gradient(180deg,rgba(18,49,67,.94),rgba(9,27,39,.94));
 border:1px solid var(--line-strong);
 border-radius:var(--radius);
 padding:20px;
 box-shadow:var(--shadow);
}
.panel-head{
 display:flex;align-items:center;gap:8px;
 font-size:14px;font-weight:800;color:#fff;
 padding-bottom:12px;margin-bottom:12px;
 border-bottom:1px solid var(--line);
}
.panel-head::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--brand)}
.panel-list{list-style:none;margin:0;padding:0}
.panel-list li{
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 padding:10px 0;border-bottom:1px dashed rgba(140,196,224,.14);
 font-size:13.8px;
}
.panel-list li:last-child{border-bottom:0}
.panel-list span{color:var(--muted)}
.panel-list strong{color:var(--text);font-weight:700}
.panel-foot{
 margin-top:14px;padding:10px 12px;
 border-radius:var(--radius-sm);
 background:var(--accent-soft);
 border:1px solid rgba(255,182,72,.28);
 font-size:12.8px;color:#ffd79a;line-height:1.6;
}

/* ---------- 通用板块 ---------- */
main{display:block}
.section{padding:70px 0;position:relative}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-deep{background:var(--bg-deep)}
.section-head{max-width:780px;margin-bottom:34px}
.section-kicker{
 display:inline-flex;align-items:center;gap:8px;
 font-size:12.5px;font-weight:800;color:var(--brand);
 letter-spacing:.12em;margin-bottom:10px;
}
.section-kicker::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--brand)}
.section-title{font-size:clamp(22px,2.4vw,28px);line-height:1.36;margin-bottom:12px}
.section-desc{font-size:14.5px;color:var(--muted);line-height:1.8;margin:0}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}

/* ---------- 数据条 ---------- */
.stat-band{padding:0;background:var(--bg-alt);border-bottom:1px solid var(--line)}
.stat-row{
 display:grid;grid-template-columns:repeat(4,1fr);
 background:linear-gradient(180deg,var(--surface),var(--surface-2));
 border:1px solid var(--line);
 border-radius:var(--radius);
 margin-top:-38px;position:relative;z-index:5;
 box-shadow:var(--shadow);
 overflow:hidden;
}
.stat-card{padding:22px 20px;border-right:1px solid var(--line);transition:background var(--ease)}
.stat-card:last-child{border-right:0}
.stat-card:hover{background:rgba(42,212,230,.06)}
.stat-num{font-size:26px;font-weight:800;color:var(--brand);line-height:1.2;margin-bottom:4px;letter-spacing:-.02em}
.stat-label{font-size:13px;color:var(--muted)}

/* ---------- 卡片 ---------- */
.card{
 background:linear-gradient(180deg,var(--surface),var(--surface-2));
 border:1px solid var(--line);
 border-radius:var(--radius);
 padding:22px;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.card h3{font-size:17px;margin-bottom:8px}
.card p{font-size:14px;color:var(--text-soft);line-height:1.78}

.tier-card{position:relative;padding-top:26px}
.tier-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.tier-level{font-size:19px;font-weight:800;color:#fff}
.tier-badge{
 font-size:12px;font-weight:800;
 padding:4px 10px;border-radius:var(--radius-pill);
 background:var(--brand-soft);color:#8ff2fb;border:1px solid rgba(42,212,230,.3);
}
.tier-card.is-hot{border-color:rgba(255,182,72,.42)}
.tier-card.is-hot .tier-badge{background:var(--accent-soft);color:#ffd79a;border-color:rgba(255,182,72,.4)}
.tier-list{list-style:none;margin:0;padding:0}
.tier-list li{
 display:flex;justify-content:space-between;gap:12px;
 padding:8px 0;font-size:13.5px;
 border-bottom:1px dashed rgba(140,196,224,.14);
}
.tier-list li:last-child{border-bottom:0}
.tier-list span{color:var(--muted)}
.tier-list strong{color:var(--text);font-weight:700}

.tag-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:14px}
.tag{
 display:inline-flex;align-items:center;
 padding:4px 10px;border-radius:var(--radius-pill);
 font-size:12px;font-weight:700;
 color:var(--text-soft);background:rgba(255,255,255,.05);
 border:1px solid var(--line);
}
.tag-accent{color:#ffd79a;background:var(--accent-soft);border-color:rgba(255,182,72,.32)}

/* ---------- 道具图鉴 ---------- */
.item-card{
 background:linear-gradient(180deg,var(--surface),var(--surface-2));
 border:1px solid var(--line);
 border-radius:var(--radius);
 overflow:hidden;
 transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
 display:flex;flex-direction:column;
}
.item-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--line-strong)}
.item-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-deep)}
.item-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.item-card:hover .item-thumb img{transform:scale(1.05)}
.item-thumb::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(180deg,rgba(3,12,19,0) 45%,rgba(3,12,19,.78) 100%);
}
.item-cd{
 position:absolute;left:12px;bottom:10px;z-index:2;
 font-size:12px;font-weight:800;color:#04121b;
 padding:3px 10px;border-radius:var(--radius-pill);
 background:linear-gradient(180deg,#4ce5f2,#1cbcd0);
}
.item-body{padding:18px 20px 22px;flex:1;display:flex;flex-direction:column}
.item-body h3{font-size:16.5px;margin-bottom:8px}
.item-body p{font-size:13.8px;color:var(--text-soft);line-height:1.75;margin-bottom:12px}
.item-body .tag-row{margin-top:auto}

/* ---------- 场景图文 ---------- */
.split{
 display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center;
 padding:26px;
 background:linear-gradient(180deg,rgba(18,49,67,.6),rgba(9,27,39,.6));
 border:1px solid var(--line);
 border-radius:var(--radius);
 transition:border-color var(--ease),box-shadow var(--ease);
}
.split:hover{border-color:var(--line-strong);box-shadow:var(--shadow)}
.split + .split{margin-top:22px}
.split.reverse .split-media{order:2}
.split-media{border-radius:var(--radius-sm);overflow:hidden;background:var(--bg-deep);border:1px solid var(--line)}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split-body h3{font-size:20px;margin-bottom:10px}
.split-body p{font-size:14.2px;color:var(--text-soft);line-height:1.8}
.check-list{list-style:none;margin:14px 0 0;padding:0}
.check-list li{
 display:flex;gap:10px;align-items:flex-start;
 font-size:13.8px;color:var(--text-soft);
 padding:6px 0;
}
.check-list li::before{
 content:"";flex:0 0 auto;width:16px;height:16px;margin-top:4px;
 border-radius:50%;
 background:var(--brand-soft);
 border:1px solid rgba(42,212,230,.45);
 background-image:linear-gradient(45deg,transparent 46%,var(--brand) 46%,var(--brand) 56%,transparent 56%);
}
.check-list strong{color:var(--text)}

/* ---------- 步骤 ---------- */
.step-list{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step-item{
 position:relative;
 padding:24px 20px 20px;
 background:linear-gradient(180deg,var(--surface),var(--surface-2));
 border:1px solid var(--line);
 border-radius:var(--radius);
 transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.step-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.step-num{
 display:inline-flex;align-items:center;justify-content:center;
 width:34px;height:34px;border-radius:10px;margin-bottom:12px;
 font-size:14px;font-weight:800;color:#04121b;
 background:linear-gradient(145deg,#4ce5f2,#1cbcd0);
}
.step-item h3{font-size:15.5px;margin-bottom:8px}
.step-item p{font-size:13.5px;color:var(--text-soft);line-height:1.75}

/* ---------- 口碑 ---------- */
.quote-card{
 background:linear-gradient(180deg,var(--surface),var(--surface-2));
 border:1px solid var(--line);
 border-radius:var(--radius);
 padding:24px;
 transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.quote-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.quote-mark{font-size:30px;line-height:1;color:var(--brand);opacity:.7;margin-bottom:8px}
.quote-text{font-size:14.5px;color:var(--text);line-height:1.85;margin-bottom:16px}
.quote-author{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);padding-top:14px;border-top:1px solid var(--line)}
.avatar{
 width:30px;height:30px;border-radius:50%;flex:0 0 auto;
 display:inline-flex;align-items:center;justify-content:center;
 font-size:12.5px;font-weight:800;color:#04121b;
 background:linear-gradient(145deg,#4ce5f2,#1cbcd0);
}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-item{
 background:linear-gradient(180deg,var(--surface),var(--surface-2));
 border:1px solid var(--line);
 border-radius:var(--radius-sm);
 margin-bottom:12px;
 overflow:hidden;
 transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item[open]{border-color:rgba(42,212,230,.38);box-shadow:0 10px 24px rgba(0,0,0,.28)}
.faq-item summary{
 list-style:none;cursor:pointer;
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:16px 20px;
 font-size:15px;font-weight:700;color:var(--text);
 transition:color var(--ease);
 min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";flex:0 0 auto;
 width:24px;height:24px;line-height:22px;text-align:center;
 border-radius:50%;font-size:16px;font-weight:700;color:var(--brand);
 border:1px solid rgba(42,212,230,.4);
 transition:all var(--ease);
}
.faq-item[open] summary::after{content:"−";background:var(--brand-soft)}
.faq-item summary:hover{color:var(--brand)}
.faq-body{padding:0 20px 18px;font-size:14px;color:var(--text-soft);line-height:1.85}

/* ---------- 转化区 ---------- */
.cta-band{
 position:relative;overflow:hidden;
 padding:66px 0;
 background:var(--bg-deep) url('/assets/images/cd0b96793c55cf75.webp') center/cover no-repeat;
 border-top:1px solid var(--line);
}
.cta-band::before{
 content:"";position:absolute;inset:0;
 background:linear-gradient(100deg,rgba(3,12,19,.96) 0%,rgba(4,18,28,.88) 55%,rgba(4,18,28,.66) 100%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:12px}
.cta-inner p{font-size:14.5px;color:var(--text-soft);line-height:1.85;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.cta-box{
 background:rgba(18,49,67,.78);
 border:1px solid var(--line-strong);
 border-radius:var(--radius);
 padding:20px;
 backdrop-filter:blur(6px);
 -webkit-backdrop-filter:blur(6px);
}
.cta-box h3{font-size:15px;margin-bottom:12px}
.cta-box ul{list-style:none;margin:0;padding:0}
.cta-box li{
 display:flex;justify-content:space-between;gap:12px;
 font-size:13.5px;padding:8px 0;
 border-bottom:1px dashed rgba(140,196,224,.16);
}
.cta-box li:last-child{border-bottom:0}
.cta-box span{color:var(--muted)}
.cta-box strong{color:var(--text);font-weight:700}

/* ---------- 页脚 ---------- */
.site-footer{
 background:var(--bg-deep);
 border-top:1px solid var(--line);
 padding:54px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:38px}
.footer-col h4{
 font-size:14px;font-weight:800;color:#fff;
 margin-bottom:16px;padding-bottom:10px;
 border-bottom:1px solid var(--line);
}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--text-soft);font-size:13.8px}
.footer-col a:hover{color:var(--brand)}
.footer-brand p{color:var(--muted);font-size:13.6px;line-height:1.85;margin-top:14px;max-width:420px}
.footer-bottom{
 display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
 margin-top:38px;padding:20px 0 24px;
 border-top:1px solid var(--line);
 font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
 .hero3-inner{grid-template-columns:1fr;gap:30px}
 .grid-4{grid-template-columns:repeat(2,1fr)}
 .grid-3{grid-template-columns:repeat(2,1fr)}
 .stat-row{grid-template-columns:repeat(2,1fr)}
 .stat-card:nth-child(2){border-right:0}
 .stat-card:nth-child(1),.stat-card:nth-child(2){border-bottom:1px solid var(--line)}
 .step-list{grid-template-columns:repeat(2,1fr)}
 .cta-inner{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
 .footer-brand{grid-column:1 / -1}
}
@media (max-width:900px){
 .nav-links{
  display:none;
  position:absolute;top:calc(100% + 8px);left:0;right:0;
  flex-direction:column;align-items:stretch;gap:6px;
  margin-left:0;padding:12px;
  background:linear-gradient(180deg,#123143,#0b202d);
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  z-index:130;
 }
 .nav-panel.nav-open .nav-links{display:flex}
 .nav-toggle{display:flex}
 .nav-cta{display:none}
 .nav-item{padding:12px 14px;min-height:44px;justify-content:flex-start}
}
@media (max-width:768px){
 .container{padding:0 18px}
 .section{padding:52px 0}
 .hero3{padding:38px 0 56px}
 .split{grid-template-columns:1fr;gap:20px;padding:20px}
 .split.reverse .split-media{order:0}
 .grid-2{grid-template-columns:1fr}
 .grid-3{grid-template-columns:1fr}
 .step-list{grid-template-columns:1fr}
 .stat-row{margin-top:-28px}
 .footer-grid{grid-template-columns:1fr}
 .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
 .grid-4{grid-template-columns:1fr}
 .stat-row{grid-template-columns:1fr}
 .stat-card{border-right:0;border-bottom:1px solid var(--line)}
 .stat-card:last-child{border-bottom:0}
 .hero3 h1{font-size:26px}
 .section-title{font-size:21px}
 .btn{width:100%}
 .hero3-actions .btn{width:100%}
 .hero3-strip{border-radius:var(--radius);padding:8px}
 .strip-pill{flex:1 1 auto;justify-content:center;font-size:13px}
 .cta-actions .btn{width:100%}
}