/* roulang page: index */
:root{
  --bg-deep:#060B16;
  --bg-panel:#0B1424;
  --surface:#101B2E;
  --surface-2:#16233A;
  --primary:#34E0B0;
  --primary-deep:#1FB98F;
  --accent:#FF8A3D;
  --accent-2:#8B6CFF;
  --text-1:#EAF2FF;
  --text-2:#A9BACF;
  --text-3:#6C7E97;
  --line:rgba(140,180,255,.14);
  --line-strong:rgba(255,255,255,.10);
  --glow:rgba(52,224,176,.35);
  --glass:rgba(255,255,255,.05);
  --radius-lg:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-hover:0 18px 44px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.08);
  --shadow-float:0 24px 60px rgba(0,0,0,.55);
  --space-section:96px;
  --shell:240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-2);
  font-family:"HarmonyOS Sans SC","MiSans","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.2px;
  -webkit-font-smoothing:antialiased;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover,a:focus{color:#5CF0C6;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.3;letter-spacing:.4px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(52,224,176,.28);color:#fff;}
::-webkit-scrollbar{width:11px;height:11px;}
::-webkit-scrollbar-track{background:#05090F;}
::-webkit-scrollbar-thumb{background:rgba(52,224,176,.3);border-radius:999px;border:3px solid #05090F;}
::-webkit-scrollbar-thumb:hover{background:rgba(52,224,176,.5);}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

/* ---------- Foundation 覆写 ---------- */
.row{max-width:1200px;margin-left:auto;margin-right:auto;}
.row .row{margin-left:0;margin-right:0;}
.columns{padding-left:12px;padding-right:12px;}
.accordion,.accordion-item,.accordion-title,.accordion-content{background:transparent;border:none;margin:0;padding:0;color:inherit;font-size:inherit;line-height:inherit;}
.accordion-title::before,.accordion-title::after{content:none !important;display:none !important;}
[type=text],[type=email],[type=search],textarea{box-shadow:none;}

/* ---------- 布局骨架 ---------- */
.app-shell{display:flex;min-height:100vh;}
.app-sidebar{
  position:fixed;top:0;left:0;width:var(--shell);height:100vh;
  background:var(--bg-panel);
  border-right:1px solid var(--line-strong);
  display:flex;flex-direction:column;
  padding:26px 18px 20px;
  z-index:60;
  transition:background .25s var(--ease),box-shadow .25s var(--ease),backdrop-filter .25s var(--ease);
}
.app-sidebar.is-scrolled{
  background:rgba(11,20,36,.88);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 22px;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 38px;
  background:linear-gradient(150deg,var(--primary),var(--primary-deep));
  display:flex;align-items:center;justify-content:center;
  color:#03241C;font-weight:800;font-size:17px;
  box-shadow:0 8px 22px var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{color:var(--text-1);font-size:14.5px;font-weight:800;letter-spacing:.3px;}
.brand-text span{color:var(--text-3);font-size:11.5px;letter-spacing:1.4px;}
.side-label{
  font-size:11px;letter-spacing:2px;color:var(--text-3);
  padding:0 10px 10px;font-weight:600;
}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:12px 12px 12px 14px;border-radius:var(--radius-sm);
  color:var(--text-2);font-size:14.5px;font-weight:500;
  min-height:44px;transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.side-nav a i{width:20px;font-size:16px;color:var(--text-3);transition:color .2s var(--ease);}
.side-nav a:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.side-nav a:hover i{color:var(--primary);}
.side-nav a.active{
  color:var(--text-1);font-weight:600;background:rgba(52,224,176,.08);
}
.side-nav a.active i{color:var(--primary);}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;
  background:var(--primary);box-shadow:0 0 12px var(--glow);
}
.side-divider{height:1px;background:var(--line);margin:20px 10px;flex:0 0 1px;}
.side-extra{display:flex;flex-direction:column;gap:2px;}
.side-extra a{
  display:flex;align-items:center;gap:10px;padding:10px 12px;
  font-size:13.5px;color:var(--text-3);border-radius:var(--radius-sm);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.side-extra a:hover{color:var(--primary);background:rgba(255,255,255,.03);}
.side-card{
  margin-top:auto;margin-bottom:16px;
  background:var(--glass);border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);padding:16px;
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.side-card p{font-size:13px;color:var(--text-2);margin-bottom:12px;line-height:1.6;}
.side-card .btn{width:100%;justify-content:center;padding:11px 14px;font-size:13.5px;}
.side-copy{font-size:11.5px;color:var(--text-3);padding:0 10px;line-height:1.6;}

.app-main{margin-left:var(--shell);width:calc(100% - var(--shell));min-height:100vh;display:flex;flex-direction:column;}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;}
.section{padding:var(--space-section) 0;}
.section-tight{padding:72px 0;}

/* ---------- 顶部移动条 / 抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  align-items:center;justify-content:space-between;padding:0 18px;
  background:rgba(11,20,36,.9);backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-strong);
  transition:box-shadow .25s var(--ease);
}
.topbar.is-scrolled{box-shadow:0 8px 24px rgba(0,0,0,.5);}
.topbar .brand-mini{display:flex;align-items:center;gap:9px;color:var(--text-1);font-weight:800;font-size:14.5px;}
.topbar .brand-mini .brand-mark{width:30px;height:30px;flex:0 0 30px;font-size:13px;border-radius:9px;}
.burger{
  width:44px;height:44px;border-radius:var(--radius-sm);
  background:transparent;border:1px solid var(--line-strong);
  color:var(--text-1);font-size:17px;display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.burger:hover{background:rgba(255,255,255,.06);border-color:var(--primary);}
.drawer{
  position:fixed;inset:0;z-index:90;display:none;
}
.drawer.is-open{display:block;}
.drawer-mask{position:absolute;inset:0;background:rgba(3,7,14,.72);backdrop-filter:blur(2px);}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(88vw,340px);height:100%;
  background:var(--bg-panel);border-left:1px solid var(--line-strong);
  padding:22px 20px;display:flex;flex-direction:column;gap:6px;
  animation:drawerIn .26s var(--ease);
  overflow-y:auto;
}
@keyframes drawerIn{from{transform:translateX(24px);opacity:.4;}to{transform:none;opacity:1;}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:44px;height:44px;border-radius:var(--radius-sm);background:transparent;
  border:1px solid var(--line-strong);color:var(--text-1);font-size:16px;cursor:pointer;
}
.drawer-close:hover{border-color:var(--primary);color:var(--primary);}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{
  display:flex;align-items:center;gap:12px;padding:15px 14px;border-radius:var(--radius-sm);
  color:var(--text-2);font-size:16.5px;min-height:52px;font-weight:500;
  border:1px solid transparent;
}
.drawer-nav a i{color:var(--text-3);width:20px;}
.drawer-nav a.active{color:var(--text-1);background:rgba(52,224,176,.09);border-color:rgba(52,224,176,.28);font-weight:600;}
.drawer-nav a.active i{color:var(--primary);}
.drawer-foot{margin-top:auto;padding-top:24px;display:flex;flex-direction:column;gap:12px;}
.drawer-foot p{font-size:13px;color:var(--text-3);line-height:1.7;}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:13px 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;letter-spacing:.4px;cursor:pointer;
  border:1px solid transparent;transition:all .2s var(--ease);text-align:center;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#03241C;box-shadow:0 8px 24px var(--glow);
}
.btn-primary:hover,.btn-primary:focus{
  color:#03241C;filter:brightness(1.08);transform:translateY(-2px);
  box-shadow:0 14px 34px rgba(52,224,176,.45);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 5px 16px rgba(52,224,176,.3);}
.btn-ghost{
  background:transparent;color:var(--text-1);border-color:var(--line-strong);
}
.btn-ghost:hover,.btn-ghost:focus{
  background:rgba(255,255,255,.06);border-color:rgba(52,224,176,.45);color:var(--text-1);
  transform:translateY(-2px);
}
.btn-accent{
  background:linear-gradient(135deg,var(--accent),#E2701F);color:#26120A;
  box-shadow:0 8px 24px rgba(255,138,61,.32);
}
.btn-accent:hover,.btn-accent:focus{color:#26120A;filter:brightness(1.07);transform:translateY(-2px);box-shadow:0 14px 34px rgba(255,138,61,.42);}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.link-more{
  display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--primary);
  border-bottom:1px solid transparent;transition:all .2s var(--ease);
}
.link-more:hover{color:#5CF0C6;border-bottom-color:rgba(52,224,176,.6);text-shadow:0 0 14px var(--glow);}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:25px;padding:0 11px;
  border-radius:var(--radius-pill);font-size:12px;font-weight:500;letter-spacing:.3px;
  color:var(--primary);background:rgba(52,224,176,.08);border:1px solid rgba(52,224,176,.4);
}
.badge.violet{color:#B8A6FF;background:rgba(139,108,255,.09);border-color:rgba(139,108,255,.42);}
.badge.warm{color:var(--accent);background:rgba(255,138,61,.08);border-color:rgba(255,138,61,.4);}
.card{
  background:var(--surface);border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
}
.card:hover{transform:translateY(-2px);border-color:rgba(52,224,176,.34);box-shadow:var(--shadow-hover);}
.glass{
  background:var(--glass);border:1px solid var(--line-strong);border-radius:var(--radius-lg);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;}
.section-head h2{font-size:30px;letter-spacing:.6px;}
.section-head .sub{font-size:14px;color:var(--text-3);margin-top:8px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:2.4px;
  color:var(--primary);font-weight:600;text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary);display:block;}
.img-frame{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line-strong);background:var(--surface-2);
  aspect-ratio:16/9;
}
.img-frame img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.img-frame:hover img{transform:scale(1.02);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  min-height:560px;height:84vh;
  display:flex;align-items:center;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(900px 520px at 12% 24%, rgba(52,224,176,.16), transparent 62%),
    linear-gradient(180deg,#070D1A 0%,#060B16 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(140,180,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(140,180,255,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(720px 460px at 24% 40%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(720px 460px at 24% 40%,#000,transparent 78%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center;width:100%;}
.hero h1{font-size:44px;line-height:1.24;font-weight:800;letter-spacing:.6px;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-lead{font-size:16.5px;color:var(--text-2);max-width:520px;margin-bottom:30px;line-height:1.85;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px;}
.hero-metrics{display:flex;align-items:stretch;gap:0;flex-wrap:wrap;}
.metric{padding-right:26px;margin-right:26px;border-right:1px solid var(--line);}
.metric:last-child{border-right:none;padding-right:0;margin-right:0;}
.metric b{
  display:block;font-size:30px;font-weight:800;color:var(--primary);
  font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:.5px;
}
.metric.warm b{color:var(--accent);}
.metric span{display:block;font-size:12.5px;color:var(--text-3);margin-top:6px;letter-spacing:.6px;}
.hero-visual{position:relative;}
.hero-visual .img-frame{aspect-ratio:16/11;border-radius:18px;box-shadow:var(--shadow-float);}
.hero-visual .img-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,22,.05),rgba(6,11,22,.65));
}
.hero-float{
  position:absolute;left:-28px;bottom:-30px;width:min(310px,92%);
  padding:18px 18px 16px;border-radius:var(--radius-lg);
  background:rgba(16,27,46,.82);border:1px solid rgba(52,224,176,.32);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-float);
}
.hero-float h3{font-size:14px;letter-spacing:.6px;margin-bottom:12px;display:flex;align-items:center;gap:8px;}
.hero-float h3 i{color:var(--primary);}
.hero-float ul{display:flex;flex-direction:column;gap:10px;}
.hero-float li{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--text-2);padding-bottom:10px;border-bottom:1px dashed var(--line);
}
.hero-float li:last-child{border-bottom:none;padding-bottom:0;}
.hero-float li b{color:var(--text-1);font-weight:600;font-size:13px;}
.dot-live{
  display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 0 4px rgba(52,224,176,.15);margin-right:6px;vertical-align:middle;
}

/* ---------- 卖点三连（非对称） ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.feature-main{grid-column:span 7;padding:32px;display:flex;flex-direction:column;}
.feature-side{grid-column:span 5;display:flex;flex-direction:column;gap:24px;}
.feature-main.glow{border-color:rgba(52,224,176,.34);box-shadow:0 12px 38px rgba(52,224,176,.12),var(--shadow-card);}
.feature-icon{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:21px;color:var(--primary);background:rgba(52,224,176,.1);
  border:1px solid rgba(52,224,176,.3);margin-bottom:20px;
}
.feature-icon.violet{color:#B8A6FF;background:rgba(139,108,255,.1);border-color:rgba(139,108,255,.32);}
.feature-icon.warm{color:var(--accent);background:rgba(255,138,61,.1);border-color:rgba(255,138,61,.32);}
.feature-main h3{font-size:22px;margin-bottom:12px;}
.feature-side .card{padding:24px;}
.feature-side h3{font-size:18px;margin-bottom:10px;}
.feature-copy{font-size:14.5px;color:var(--text-2);line-height:1.8;}
.feature-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:14px;}
.feature-side .feature-foot{padding-top:16px;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}

/* ---------- 场景演示 ---------- */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.scene + .scene{margin-top:88px;}
.scene.reverse .scene-media{order:2;}
.scene h2{font-size:28px;margin-bottom:16px;}
.scene p.scene-copy{font-size:15.5px;color:var(--text-2);line-height:1.85;margin-bottom:26px;}
.steps{display:flex;flex-direction:column;gap:0;position:relative;}
.step{display:flex;gap:16px;position:relative;padding-bottom:26px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:13px;top:30px;bottom:0;width:2px;
  background:linear-gradient(180deg,rgba(52,224,176,.5),rgba(52,224,176,.05));
}
.step:last-child::before{display:none;}
.step-num{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  background:rgba(52,224,176,.14);border:1px solid rgba(52,224,176,.5);
  color:var(--primary);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;position:relative;z-index:1;
  font-variant-numeric:tabular-nums;
}
.step h4{font-size:15.5px;margin-bottom:6px;font-weight:600;}
.step p{font-size:14px;color:var(--text-3);line-height:1.7;}

/* ---------- 最新信息 ---------- */
.news-grid{margin-top:0;}
.news-cell{margin-bottom:24px;display:flex;}
.news-card{display:flex;flex-direction:column;width:100%;overflow:hidden;}
.news-card .img-frame{border-radius:0;border:none;border-bottom:1px solid var(--line-strong);aspect-ratio:16/9;}
.news-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1;}
.news-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:51px;}
.news-body h3 a{color:var(--text-1);}
.news-body h3 a:hover{color:var(--primary);}
.news-excerpt{font-size:13.5px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:47px;margin-bottom:16px;}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--text-3);
}
.news-meta i{margin-right:6px;color:var(--primary);}
.news-badge-row{margin-bottom:12px;display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.card-link{position:absolute;inset:0;z-index:3;font-size:0;color:transparent;}
.empty-state{
  padding:56px 24px;text-align:center;border-radius:var(--radius-lg);
  background:var(--surface);border:1px dashed var(--line-strong);
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.empty-state .empty-ico{
  width:96px;height:96px;border-radius:24px;display:flex;align-items:center;justify-content:center;
  font-size:36px;color:var(--text-3);background:rgba(255,255,255,.03);border:1px solid var(--line-strong);
}
.empty-state p{font-size:14.5px;color:var(--text-2);}

/* ---------- 社会认同 ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;margin-bottom:36px;}
.voice-a{grid-column:span 5;}
.voice-b{grid-column:span 4;}
.voice-c{grid-column:span 3;}
.voice-card{padding:24px;display:flex;flex-direction:column;height:100%;}
.voice-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.avatar{
  width:40px;height:40px;flex:0 0 40px;border-radius:50%;
  background:linear-gradient(140deg,rgba(52,224,176,.35),rgba(139,108,255,.35));
  display:flex;align-items:center;justify-content:center;
  color:var(--text-1);font-size:15px;font-weight:700;
  border:1px solid var(--line-strong);
}
.voice-head strong{display:block;color:var(--text-1);font-size:14.5px;}
.voice-head span{display:block;font-size:12px;color:var(--text-3);margin-top:3px;}
.voice-card blockquote{margin:0;font-size:14.5px;color:var(--text-2);line-height:1.85;padding-left:16px;border-left:2px solid rgba(52,224,176,.5);}
.badge-wall{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;}
.badge-item{
  height:64px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.03);border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;gap:8px;
  color:var(--text-3);font-size:13px;font-weight:600;letter-spacing:.5px;
  filter:grayscale(1);opacity:.75;transition:all .22s var(--ease);
}
.badge-item i{font-size:15px;}
.badge-item:hover{filter:grayscale(0);opacity:1;color:var(--text-1);border-color:rgba(52,224,176,.36);transform:translateY(-2px);}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.faq-intro h2{font-size:28px;margin-bottom:16px;}
.faq-intro p{font-size:14.5px;color:var(--text-2);line-height:1.85;margin-bottom:24px;}
.faq-list{background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-card);}
.faq-list .accordion-item{border-bottom:1px solid var(--line);position:relative;}
.faq-list .accordion-item:last-child{border-bottom:none;}
.faq-list .accordion-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;
  transition:background .2s var(--ease);
}
.faq-list .accordion-item.is-active::before{background:var(--primary);box-shadow:0 0 14px var(--glow);}
.faq-list .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:16px 24px;font-size:16px;font-weight:500;color:var(--text-1);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.faq-list .accordion-title:hover{color:var(--primary);background:rgba(255,255,255,.02);}
.faq-list .accordion-title span{flex:1;}
.faq-list .accordion-title::after{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:15px;color:var(--primary);transition:transform .25s var(--ease);flex:0 0 auto;
}
.faq-list .accordion-title[aria-expanded="true"]::after{transform:rotate(45deg);}
.faq-list .accordion-content{padding:0 24px 18px !important;border:none !important;font-size:14.5px;color:var(--text-2);line-height:1.85;background:transparent !important;}

/* ---------- CTA 带 ---------- */
.cta-band{
  padding:44px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:linear-gradient(120deg,rgba(52,224,176,.10),rgba(255,255,255,.03) 60%);
  border:1px solid rgba(52,224,176,.34);border-radius:var(--radius-lg);
  box-shadow:0 18px 46px rgba(52,224,176,.12);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.cta-band h2{font-size:26px;margin-bottom:10px;}
.cta-band p{font-size:14.5px;color:var(--text-2);max-width:560px;line-height:1.8;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:auto;background:var(--bg-panel);border-top:1px solid var(--line-strong);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-grid h4{font-size:14px;letter-spacing:1.6px;color:var(--text-1);margin-bottom:20px;text-transform:uppercase;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-grid p{font-size:13.5px;color:var(--text-2);line-height:1.85;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--text-2);transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--primary);}
.footer-contact li{font-size:13.5px;color:var(--text-2);display:flex;gap:10px;line-height:1.75;margin-bottom:12px;}
.footer-contact i{color:var(--primary);margin-top:5px;}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--primary);}

/* ---------- 固定转化条 / 返回顶部 ---------- */
.sticky-cta{
  position:fixed;left:var(--shell);right:0;bottom:0;height:64px;z-index:65;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:0 28px;
  background:rgba(11,20,36,.9);border-top:1px solid rgba(52,224,176,.28);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  transform:translateY(110%);opacity:0;pointer-events:none;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.sticky-cta.is-visible{transform:none;opacity:1;pointer-events:auto;}
.sticky-cta .sticky-text{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:10px;}
.sticky-cta .sticky-text i{color:var(--primary);}
.sticky-cta .sticky-actions{display:flex;align-items:center;gap:18px;}
.sticky-cta .btn{min-height:42px;padding:10px 22px;font-size:14px;}
.back-top{
  position:fixed;right:26px;bottom:88px;width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;z-index:66;
  background:rgba(16,27,46,.88);border:1px solid var(--line-strong);color:var(--text-1);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  cursor:pointer;opacity:0;transform:translateY(10px);pointer-events:none;
  transition:all .26s var(--ease);
}
.back-top.is-visible{opacity:1;transform:none;pointer-events:auto;}
.back-top:hover{border-color:var(--primary);color:var(--primary);box-shadow:0 0 20px var(--glow);}

/* ---------- 侧栏精简（平板） ---------- */
@media (max-width:1199px){
  :root{--shell:72px;--space-section:72px;}
  .brand-text,.side-label,.side-nav a span,.side-extra a span,.side-card,.side-copy{display:none;}
  .app-sidebar{padding:22px 10px;align-items:center;}
  .brand{padding:0 0 20px;justify-content:center;}
  .side-nav{align-items:center;width:100%;}
  .side-nav a{justify-content:center;padding:12px 0;width:48px;margin:0 auto;}
  .side-nav a i{font-size:18px;}
  .side-extra a{justify-content:center;padding:10px 0;width:44px;margin:0 auto;}
  .side-divider{width:40px;margin:18px auto;flex:0 0 1px;}
  .feature-main{grid-column:span 12;}
  .feature-side{grid-column:span 12;flex-direction:row;}
  .feature-side .card{flex:1;}
  .voice-a{grid-column:span 7;}
  .voice-b{grid-column:span 5;}
  .voice-c{grid-column:span 12;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .badge-wall{grid-template-columns:repeat(4,1fr);}
}
@media (max-width:1023px){
  .hero{height:auto;min-height:0;padding:64px 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:44px;}
  .hero h1{font-size:36px;}
  .hero-float{position:relative;left:0;bottom:0;margin-top:18px;width:100%;}
  .scene{grid-template-columns:1fr;gap:32px;}
  .scene.reverse .scene-media{order:0;}
  .contact-grid{grid-template-columns:1fr;}
}
/* ---------- 移动端 ---------- */
@media (max-width:767px){
  :root{--space-section:56px;}
  body{padding-top:60px;padding-bottom:64px;}
  .app-sidebar{display:none;}
  .app-main{margin-left:0;width:100%;}
  .topbar{display:flex;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px;}
  .section-head h2{font-size:24px;}
  .hero{padding:44px 0 56px;}
  .hero h1{font-size:30px;line-height:1.3;}
  .hero-lead{font-size:15.5px;margin-bottom:24px;}
  .hero-actions{flex-direction:column;align-items:stretch;gap:12px;margin-bottom:30px;}
  .hero-actions .btn{width:100%;}
  .hero-metrics{gap:18px;}
  .metric{padding-right:18px;margin-right:18px;}
  .metric b{font-size:24px;}
  .feature-grid{gap:16px;}
  .feature-main{padding:24px;}
  .feature-side{flex-direction:column;gap:16px;}
  .feature-main h3{font-size:19px;}
  .scene h2{font-size:23px;}
  .scene + .scene{margin-top:56px;}
  .news-cell{margin-bottom:16px;}
  .voice-a,.voice-b,.voice-c{grid-column:span 12;}
  .voice-grid{gap:16px;}
  .badge-wall{grid-template-columns:repeat(2,1fr);gap:12px;}
  .faq-list .accordion-title{padding:15px 16px;font-size:15px;min-height:52px;}
  .faq-list .accordion-content{padding:0 16px 16px !important;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:28px 22px;gap:22px;}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 20px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .sticky-cta{
    left:0;height:64px;padding:0 16px;transform:none;opacity:1;pointer-events:auto;
  }
  .sticky-cta .sticky-text{display:none;}
  .sticky-cta .sticky-actions{width:100%;gap:14px;justify-content:space-between;}
  .sticky-cta .btn{flex:1;}
  .back-top{bottom:80px;right:16px;}
}
@media (max-width:520px){
  .hero h1{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .badge-wall{grid-template-columns:1fr 1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --bg-deep:#060B16;
  --bg-panel:#0B1424;
  --surface:#101B2E;
  --surface-2:#16233A;
  --primary:#34E0B0;
  --primary-dark:#1FB98F;
  --accent:#FF8A3D;
  --accent-2:#8B6CFF;
  --text-1:#EAF2FF;
  --text-2:#A9BACF;
  --text-3:#6C7E97;
  --line:rgba(140,180,255,.14);
  --glow:rgba(52,224,176,.35);
  --glass:rgba(255,255,255,.05);
  --glass-line:rgba(255,255,255,.10);
  --r-lg:16px;
  --r-md:12px;
  --r-pill:999px;
  --shadow-1:0 10px 30px rgba(0,0,0,.35);
  --shadow-2:0 18px 44px rgba(0,0,0,.45);
  --shadow-3:0 28px 70px rgba(0,0,0,.55);
  --sec:96px;
  --nav-w:240px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-2);
  font-family:"HarmonyOS Sans","MiSans","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease-out,opacity .2s ease-out;}
a:hover{color:var(--text-1);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.35;letter-spacing:.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(52,224,176,.28);color:#fff;}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#080E1A;}
::-webkit-scrollbar-thumb{background:rgba(52,224,176,.30);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(52,224,176,.5);}

.container{max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 左侧导航 ---------- */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--bg-panel);
  border-right:1px solid var(--glass-line);
  display:flex;
  flex-direction:column;
  gap:14px;
  padding:26px 20px 20px;
  z-index:60;
  transition:background .25s ease-out,box-shadow .25s ease-out;
  overflow-y:auto;
}
.side-nav.is-scrolled{
  background:rgba(11,20,36,.86);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  box-shadow:0 10px 30px rgba(0,0,0,.45);
}
.brand{display:flex;align-items:center;gap:12px;color:var(--text-1);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,var(--primary),var(--primary-dark));
  color:#052018;font-weight:800;font-size:18px;
  box-shadow:0 8px 22px rgba(52,224,176,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15px;font-weight:700;color:var(--text-1);}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--text-3);letter-spacing:1px;}
.nav-list{display:flex;flex-direction:column;gap:4px;}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  min-height:44px;
  padding:10px 12px 10px 14px;
  border-radius:10px;
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.4;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-link i{font-size:16px;width:20px;text-align:center;color:var(--text-3);transition:color .2s ease-out;}
.nav-link span{flex:1;}
.nav-link:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.nav-link:hover i{color:var(--primary);}
.nav-link.active{
  background:rgba(52,224,176,.08);
  color:var(--text-1);
  font-weight:600;
}
.nav-link.active i{color:var(--primary);}
.nav-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
  box-shadow:0 0 12px var(--glow);
}
.nav-divider{height:1px;background:var(--line);margin:6px 0;}
.nav-card{
  margin-top:auto;
  padding:16px;
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-1);
}
.nav-card p{font-size:13.5px;color:var(--text-2);margin-bottom:12px;line-height:1.6;}
.nav-copy{font-size:11.5px;color:var(--text-3);line-height:1.6;letter-spacing:.3px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:12px 26px;
  border-radius:var(--r-md);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out,opacity .2s ease-out;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#04211A;
  box-shadow:0 8px 24px rgba(52,224,176,.30);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 12px 32px rgba(52,224,176,.45);
  color:#04211A;
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 14px rgba(52,224,176,.28);}
.btn-ghost{
  background:transparent;
  border-color:var(--glass-line);
  color:var(--text-1);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);transform:translateY(-2px);color:var(--text-1);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:9px 18px;font-size:13.5px;border-radius:10px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease-out,text-shadow .2s ease-out;
}
.link-more:hover{border-color:var(--primary);text-shadow:0 0 12px var(--glow);}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;
  align-items:center;justify-content:space-between;
  padding:0 18px;
  background:rgba(11,20,36,.92);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--glass-line);
  z-index:80;
}
.brand-mini{display:flex;align-items:center;gap:10px;color:var(--text-1);font-size:14.5px;font-weight:700;}
.brand-mini .brand-mark{width:32px;height:32px;flex:0 0 32px;font-size:15px;border-radius:9px;}
.hamburger{
  width:44px;height:44px;display:grid;place-items:center;
  background:rgba(255,255,255,.05);
  border:1px solid var(--glass-line);
  border-radius:10px;color:var(--text-1);cursor:pointer;
  transition:background .2s ease-out;
}
.hamburger:hover{background:rgba(255,255,255,.1);}
.drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(6,11,22,.96);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:22px 20px 32px;
  display:flex;flex-direction:column;gap:18px;
  overflow-y:auto;
}
.drawer[hidden]{display:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:44px;height:44px;display:grid;place-items:center;
  background:rgba(255,255,255,.05);border:1px solid var(--glass-line);
  border-radius:10px;color:var(--text-1);cursor:pointer;
}
.drawer .nav-link{font-size:16.5px;min-height:52px;}
.drawer .nav-link span{display:block;}

/* ---------- 主内容 ---------- */
.site-main{margin-left:var(--nav-w);min-height:100vh;padding-bottom:96px;}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  min-height:360px;
  display:flex;align-items:center;
  padding:64px 0 56px;
  background-image:linear-gradient(90deg,rgba(6,11,22,.94) 0%,rgba(6,11,22,.82) 46%,rgba(6,11,22,.72) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;top:-160px;left:-120px;width:640px;height:640px;
  background:radial-gradient(circle,rgba(52,224,176,.20),transparent 66%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.5fr 1fr;gap:44px;align-items:center;width:100%;
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:16px;}
.crumb a{color:var(--primary);}
.crumb a:hover{text-decoration:underline;text-shadow:0 0 12px var(--glow);}
.crumb i{font-size:10px;color:var(--text-3);}
.cat-hero h1{font-size:40px;font-weight:800;letter-spacing:.5px;line-height:1.25;}
.cat-hero .hero-desc{margin-top:16px;font-size:16px;color:var(--text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-cards{display:grid;grid-template-columns:1fr;gap:16px;}
.mini-card{
  padding:20px;
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-1);
}
.mini-card .num{
  font-size:30px;font-weight:800;color:var(--primary);
  font-family:"Inter","HarmonyOS Sans",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  letter-spacing:.5px;line-height:1.2;
}
.mini-card .lab{font-size:13px;color:var(--text-3);margin-top:4px;}
.mini-card .tip{font-size:13.5px;color:var(--text-2);margin-top:10px;padding-top:10px;border-top:1px solid var(--line);}

/* ---------- 内容区：锚点 + 长文 ---------- */
.content-shell{padding:var(--sec) 0 0;}
.content-layout{display:grid;grid-template-columns:220px 1fr;gap:52px;align-items:start;}

.anchor-nav{
  position:sticky;top:28px;
  padding:18px;
  border-radius:var(--r-lg);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.anchor-nav h4{font-size:12.5px;letter-spacing:1.4px;color:var(--text-3);text-transform:uppercase;margin-bottom:12px;}
.anchor-nav ol{display:flex;flex-direction:column;gap:2px;}
.anchor-nav a{
  display:block;padding:9px 10px;border-radius:8px;
  font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.anchor-nav a:hover{background:rgba(255,255,255,.05);color:var(--text-1);}
.anchor-nav a.active{color:var(--primary);border-left-color:var(--primary);background:rgba(52,224,176,.07);font-weight:600;}

.article-body{max-width:820px;}
.doc-section{padding-bottom:44px;border-bottom:1px solid var(--line);margin-bottom:44px;}
.doc-section:last-of-type{border-bottom:0;margin-bottom:0;padding-bottom:0;}
.doc-section h2{
  position:relative;
  font-size:28px;font-weight:700;
  padding-left:16px;
  margin-bottom:20px;
}
.doc-section h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  border-radius:3px;background:var(--primary);
  box-shadow:0 0 14px var(--glow);
}
.doc-section h3{font-size:19px;font-weight:700;margin:28px 0 12px;}
.doc-section p{font-size:16.5px;line-height:1.9;color:var(--text-2);margin-bottom:16px;}
.doc-section p:last-child{margin-bottom:0;}
.lead{font-size:17px;color:var(--text-1);}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:500;
  border:1px solid rgba(52,224,176,.4);
  background:rgba(52,224,176,.08);
  color:var(--primary);
}
.badge-purple{border-color:rgba(139,108,255,.45);background:rgba(139,108,255,.1);color:#B9A6FF;}

.feature-list{display:flex;flex-direction:column;gap:0;margin:22px 0 8px;}
.feature-list li{
  display:flex;gap:14px;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  font-size:15.5px;color:var(--text-2);
}
.feature-list li:last-child{border-bottom:0;}
.feature-list i{
  flex:0 0 34px;height:34px;width:34px;
  display:grid;place-items:center;
  border-radius:10px;
  background:rgba(52,224,176,.10);
  border:1px solid rgba(52,224,176,.24);
  color:var(--primary);font-size:14px;
}
.feature-list strong{display:block;color:var(--text-1);font-size:15.5px;margin-bottom:2px;}

.figure{
  margin:26px 0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--glass-line);
  background:var(--surface);
  box-shadow:var(--shadow-1);
}
.figure .ratio{position:relative;padding-top:56.25%;}
.figure img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
.figure:hover img{transform:scale(1.02);}
.figure figcaption{padding:12px 16px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line);}

.steps{display:flex;flex-direction:column;gap:0;margin:24px 0 8px;}
.steps li{position:relative;display:flex;gap:16px;padding-bottom:24px;}
.steps li:last-child{padding-bottom:0;}
.steps li::before{
  content:"";position:absolute;left:13px;top:30px;bottom:0;width:2px;
  background:linear-gradient(180deg,rgba(52,224,176,.6),rgba(52,224,176,.08));
}
.steps li:last-child::before{display:none;}
.steps .dot{
  flex:0 0 28px;height:28px;width:28px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(52,224,176,.14);
  border:1px solid rgba(52,224,176,.45);
  color:var(--primary);
  font-size:13px;font-weight:700;
  font-variant-numeric:tabular-nums;
  z-index:1;
}
.steps h4{font-size:16px;margin-bottom:4px;}
.steps p{font-size:15px;color:var(--text-2);margin:0;}

.spec-list{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  margin:22px 0 8px;
}
.spec-list div{
  background:var(--surface);
  padding:16px 18px;
}
.spec-list dt{font-size:13px;color:var(--text-3);margin-bottom:4px;}
.spec-list dd{margin:0;font-size:15.5px;color:var(--text-1);font-weight:600;}

.callout{
  margin:26px 0;
  padding:20px 22px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--glass-line);
  border-left:3px solid var(--primary);
  font-size:15.5px;
  color:var(--text-2);
  box-shadow:var(--shadow-1);
}
.callout strong{color:var(--text-1);}

/* ---------- FAQ ---------- */
.faq-wrap{padding:var(--sec) 0 0;}
.sec-head{max-width:720px;margin-bottom:32px;}
.sec-head h2{font-size:30px;font-weight:700;margin-bottom:12px;}
.sec-head p{font-size:15.5px;color:var(--text-2);}
.faq-list{
  border-radius:var(--r-lg);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;
  padding:16px 22px;
  background:transparent;border:0;
  text-align:left;
  font-size:16px;font-weight:500;color:var(--text-1);
  cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out;
}
.faq-q:hover{background:rgba(255,255,255,.04);}
.faq-q .mark{
  flex:0 0 24px;font-size:20px;line-height:1;color:var(--primary);
  transition:transform .25s ease-out;
}
.faq-item.open .faq-q{color:var(--primary);}
.faq-item.open .mark{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease-out;
}
.faq-item.open .faq-a{max-height:420px;}
.faq-a .inner{
  padding:0 22px 18px 22px;
  font-size:15px;color:var(--text-2);line-height:1.85;
  border-left:3px solid transparent;
}
.faq-item.open .faq-a .inner{border-left-color:var(--primary);padding-left:19px;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:var(--sec);
  border-radius:var(--r-lg);
  padding:40px 44px;
  background:var(--glass);
  border:1px solid rgba(52,224,176,.35);
  box-shadow:0 0 0 1px rgba(52,224,176,.10),0 18px 44px rgba(0,0,0,.45);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  flex-wrap:wrap;
}
.cta-band h3{font-size:24px;font-weight:700;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-2);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-left:var(--nav-w);
  margin-top:var(--sec);
  background:var(--bg-panel);
  border-top:1px solid var(--glass-line);
  padding:64px 0 24px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:15px;border-radius:9px;}
.site-footer p{font-size:14px;color:var(--text-2);line-height:1.8;}
.site-footer h4{
  font-size:13.5px;letter-spacing:1.2px;text-transform:uppercase;
  color:var(--text-1);margin-bottom:16px;font-weight:700;
}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--text-2);}
.footer-links a:hover{color:var(--primary);}
.footer-contact{display:flex;flex-direction:column;gap:10px;}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2);}
.footer-contact i{color:var(--primary);font-size:14px;width:16px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 固定转化条 ---------- */
.dock-bar{
  position:fixed;left:var(--nav-w);right:0;bottom:0;
  height:64px;z-index:70;
  background:rgba(11,20,36,.9);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-top:1px solid var(--glass-line);
  transform:translateY(110%);
  transition:transform .3s ease-out;
}
.dock-bar.show{transform:translateY(0);}
.dock-inner{
  max-width:1200px;margin:0 auto;height:100%;
  padding:0 32px;
  display:flex;align-items:center;gap:18px;
}
.dock-inner p{font-size:14.5px;color:var(--text-2);flex:1;}
.dock-link{font-size:13.5px;color:var(--text-3);}
.dock-link:hover{color:var(--primary);}

.to-top{
  position:fixed;right:26px;bottom:86px;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  color:var(--text-1);cursor:pointer;
  opacity:0;pointer-events:none;
  transition:opacity .25s ease-out,transform .2s ease-out;
  z-index:75;
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-2px);border-color:rgba(52,224,176,.5);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--nav-w:72px;--sec:72px;}
  .side-nav{padding:22px 12px;align-items:center;}
  .side-nav .brand-text,.side-nav .nav-link span,.side-nav .nav-card,.side-nav .nav-copy{display:none;}
  .side-nav .brand{justify-content:center;}
  .side-nav .nav-link{justify-content:center;padding:12px 0;}
  .side-nav .nav-link.active::before{top:8px;bottom:8px;}
  .content-layout{grid-template-columns:1fr;gap:32px;}
  .anchor-nav{position:static;}
  .anchor-nav ol{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .anchor-nav a{border-left:0;border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 14px;font-size:13px;}
  .anchor-nav a.active{border-color:rgba(52,224,176,.5);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .cat-hero h1{font-size:32px;}
  .doc-section h2{font-size:24px;}
  .sec-head h2{font-size:24px;}
  .cta-band{padding:32px 28px;}
}

@media (max-width:767px){
  :root{--sec:56px;--nav-w:0px;}
  .side-nav{display:none;}
  .mobile-topbar{display:flex;}
  .site-main{margin-left:0;padding-top:60px;padding-bottom:120px;}
  .site-footer{margin-left:0;padding-bottom:96px;}
  .container{padding:0 18px;}
  .cat-hero{min-height:auto;padding:44px 0 40px;}
  .cat-hero h1{font-size:29px;}
  .cat-hero .hero-desc{font-size:15px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .mini-card{padding:16px;}
  .mini-card .num{font-size:26px;}
  .doc-section h2{font-size:22px;padding-left:14px;}
  .doc-section h3{font-size:17px;}
  .doc-section p{font-size:15.5px;}
  .spec-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .dock-bar{left:0;transform:translateY(0);}
  .dock-inner{padding:0 16px;gap:12px;}
  .dock-inner p{display:none;}
  .dock-inner .btn{flex:1;}
  .to-top{bottom:78px;right:16px;}
  .faq-q{font-size:15.5px;padding:14px 16px;}
  .faq-a .inner{padding:0 16px 16px;}
  .doc-section{padding-bottom:32px;margin-bottom:32px;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: article */
:root{
  --bg-deep:#060B16;
  --bg-panel:#0B1424;
  --surface:#101B2E;
  --surface-2:#16233A;
  --primary:#34E0B0;
  --primary-dark:#1FB48A;
  --accent:#FF8A3D;
  --accent-2:#8B6CFF;
  --text-1:#EAF2FF;
  --text-2:#A9BACF;
  --text-3:#6C7E97;
  --line:rgba(140,180,255,.14);
  --glass:rgba(255,255,255,.05);
  --glass-line:rgba(255,255,255,.10);
  --glow:rgba(52,224,176,.35);
  --radius-lg:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 10px 30px rgba(0,0,0,.35);
  --shadow-2:0 18px 44px rgba(0,0,0,.45);
  --shadow-3:0 28px 70px rgba(0,0,0,.55);
  --space-section:96px;
  --side-w:240px;
  --ease:cubic-bezier(.22,.68,.32,1);
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-2);
  font-family:"HarmonyOS Sans","MiSans","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;background:transparent;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:hover{color:var(--text-1)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}

/* Foundation 默认外观覆写 */
body,button,input,select,textarea{font-family:inherit}
.button,a.button,.button.primary,.button.secondary{
  background:transparent;background-image:none;border:0;color:inherit;
  padding:0;margin:0;font-size:inherit;
}
.button:focus,.button:focus-visible{outline:none}
.accordion{border:0;background:transparent;margin:0}
.accordion-title{border:0;font-size:inherit}
[type=text],[type=email],[type=search],textarea{border-radius:var(--radius-sm)}

::selection{background:rgba(52,224,176,.28);color:var(--text-1)}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0A1120}
::-webkit-scrollbar-thumb{background:rgba(52,224,176,.30);border-radius:999px;border:2px solid #0A1120}
::-webkit-scrollbar-thumb:hover{background:rgba(52,224,176,.5)}

:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--surface);color:var(--text-1);padding:10px 16px;border-radius:var(--radius-sm);
}
.skip-link:focus{left:12px;top:12px}

.container{
  width:100%;
  max-width:1220px;
  margin:0 auto;
  padding:0 32px;
}

/* ============ 左侧竖向导航 ============ */
.side-panel{
  position:fixed;
  left:0;top:0;
  width:var(--side-w);
  height:100vh;
  background:var(--bg-panel);
  border-right:1px solid var(--glass-line);
  display:flex;
  flex-direction:column;
  gap:18px;
  padding:26px 18px 22px;
  overflow-y:auto;
  z-index:60;
  transition:box-shadow .25s var(--ease),background .25s var(--ease),transform .28s var(--ease);
}
.side-panel.is-scrolled{
  background:rgba(11,20,36,.88);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  box-shadow:6px 0 26px rgba(0,0,0,.45);
}

.side-brand{display:flex;align-items:center;gap:11px;padding:4px 8px 0}
.brand-mark{
  flex:0 0 auto;
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,rgba(52,224,176,.95),rgba(31,180,138,.75));
  color:#04140F;
  font-weight:800;
  font-size:17px;
  letter-spacing:.5px;
  box-shadow:0 8px 20px rgba(52,224,176,.28);
}
.brand-text{
  color:var(--text-1);
  font-size:14px;
  font-weight:700;
  line-height:1.35;
  letter-spacing:.3px;
}

.side-nav{display:flex;flex-direction:column;gap:6px}
.side-nav a,
.side-sub a{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  min-height:46px;
  padding:11px 14px;
  border-radius:var(--radius-sm);
  color:var(--text-2);
  font-size:14.5px;
  font-weight:500;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.side-nav a i,
.side-sub a i{
  width:20px;
  text-align:center;
  font-size:15px;
  color:var(--text-3);
  transition:color .2s var(--ease);
}
.side-nav a:hover,
.side-sub a:hover{
  background:rgba(255,255,255,.05);
  color:var(--text-1);
}
.side-nav a:hover i,
.side-sub a:hover i{color:var(--primary)}
.side-nav a.active{
  background:rgba(52,224,176,.08);
  color:var(--text-1);
  font-weight:600;
}
.side-nav a.active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:0 4px 4px 0;
  background:var(--primary);
  box-shadow:0 0 14px var(--glow);
}
.side-nav a.active i{color:var(--primary)}

.side-divider{height:1px;background:var(--line);margin:2px 6px}
.side-sub{display:flex;flex-direction:column;gap:4px}

.side-cta{
  margin-top:auto;
  padding:16px 14px;
  border-radius:var(--radius-lg);
  background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.side-cta p{
  font-size:13px;
  line-height:1.65;
  color:var(--text-3);
  margin-bottom:12px;
}
.side-foot{
  font-size:11.5px;
  color:var(--text-3);
  text-align:center;
  letter-spacing:.2px;
  line-height:1.6;
}

/* ============ 移动端顶栏 ============ */
.mobile-bar{
  display:none;
  position:fixed;
  left:0;top:0;right:0;
  height:60px;
  padding:0 16px;
  align-items:center;
  justify-content:space-between;
  background:rgba(11,20,36,.92);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom:1px solid var(--glass-line);
  z-index:80;
}
.mobile-brand{display:flex;align-items:center;gap:10px}
.mobile-brand .brand-mark{width:32px;height:32px;font-size:15px;border-radius:10px}
.mobile-brand .brand-text{font-size:13.5px}
.menu-toggle{
  width:44px;height:44px;
  display:grid;place-items:center;
  background:transparent;
  border:1px solid var(--glass-line);
  border-radius:var(--radius-sm);
  color:var(--text-1);
  font-size:17px;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.menu-toggle:hover{background:rgba(255,255,255,.06);border-color:rgba(52,224,176,.45);color:var(--primary)}
.menu-toggle:active{transform:translateY(1px)}

.drawer-mask{
  position:fixed;inset:0;
  background:rgba(3,7,14,.66);
  backdrop-filter:blur(2px);
  z-index:55;
  opacity:0;
  pointer-events:none;
  transition:opacity .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* ============ 内容容器 ============ */
.content-wrap{
  margin-left:var(--side-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
main{flex:1 1 auto}

/* ============ 面包屑 ============ */
.crumb-bar{padding:34px 0 0}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
}
.breadcrumb a{color:var(--text-3);position:relative}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb a:hover::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;
  background:var(--primary);
  box-shadow:0 0 8px var(--glow);
}
.breadcrumb .sep{color:rgba(108,126,151,.7);font-size:11px}
.breadcrumb .current{
  color:var(--text-2);
  max-width:46ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:48px;
  align-items:start;
  padding:26px 0 96px;
}
.article-main{min-width:0}

/* 文章头 */
.article-head{padding-bottom:28px}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(52,224,176,.40);
  background:rgba(52,224,176,.08);
  color:var(--primary);
  font-size:12px;
  font-weight:500;
  letter-spacing:.3px;
}
.badge.violet{border-color:rgba(139,108,255,.42);background:rgba(139,108,255,.10);color:#BBA9FF}

.article-head h1{
  margin:16px 0 0;
  color:var(--text-1);
  font-size:44px;
  line-height:1.28;
  font-weight:800;
  letter-spacing:-.4px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-top:16px;
  font-size:13px;
  color:var(--text-3);
}
.article-meta .dot{color:rgba(108,126,151,.6);font-size:11px}
.article-meta i{color:var(--primary);font-size:12px;margin-right:6px}

.cover-frame{
  position:relative;
  margin-top:26px;
  aspect-ratio:16/9;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--glass-line);
  background:var(--surface);
  box-shadow:var(--shadow-1);
}
.cover-frame::after{
  content:"";
  position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.32),transparent);
}
.cover-frame img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.cover-frame:hover img{transform:scale(1.02)}

.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.chip{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.04);
  color:var(--text-2);
  font-size:12px;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.chip:hover{color:var(--primary);border-color:rgba(52,224,176,.45);background:rgba(52,224,176,.08)}

/* 正文排版 */
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
  padding-top:8px;
  word-wrap:break-word;
  overflow-wrap:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;
  margin:2em 0 .9em;
  padding-left:15px;
  font-size:25px;
  line-height:1.45;
  font-weight:700;
  color:var(--text-1);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.32em;bottom:.32em;
  width:3px;
  border-radius:3px;
  background:var(--primary);
  box-shadow:0 0 12px var(--glow);
}
.article-body h3{
  margin:1.4em 0 .7em;
  font-size:20px;
  font-weight:700;
  color:var(--text-1);
}
.article-body h4{
  margin:1.2em 0 .6em;
  font-size:17px;
  font-weight:700;
  color:var(--text-1);
}
.article-body strong{color:var(--text-1);font-weight:700}
.article-body em{color:var(--primary);font-style:normal}
.article-body a{color:var(--primary);text-decoration:underline;text-decoration-color:rgba(52,224,176,.35);text-underline-offset:3px}
.article-body a:hover{color:var(--text-1);text-decoration-color:var(--primary)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px}
.article-body ul li{list-style:disc;margin:.45em 0}
.article-body ol li{list-style:decimal;margin:.45em 0}
.article-body li::marker{color:var(--primary)}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 22px;
  border-radius:var(--radius-lg);
  border:1px solid var(--glass-line);
  border-left:3px solid var(--primary);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  color:var(--text-2);
  box-shadow:inset 0 0 40px rgba(52,224,176,.05);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  max-width:100%;
  height:auto;
  margin:1.6em auto;
  border-radius:12px;
  border:1px solid var(--glass-line);
  box-shadow:var(--shadow-1);
}
.article-body figure{margin:1.6em 0}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--text-3);text-align:center}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15px;
  background:rgba(255,255,255,.02);
  border:1px solid var(--glass-line);
  border-radius:12px;
  overflow:hidden;
}
.article-body thead th{
  background:rgba(52,224,176,.08);
  color:var(--text-1);
  font-weight:600;
  text-align:left;
}
.article-body th,.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025)}
.article-body tbody tr:hover{background:rgba(52,224,176,.05)}
.article-body code{
  background:var(--surface-2);
  border:1px solid var(--glass-line);
  border-radius:6px;
  padding:1px 6px;
  font-size:.9em;
  color:var(--primary);
}
.article-body pre{
  background:var(--surface-2);
  border:1px solid var(--glass-line);
  border-radius:12px;
  padding:16px 18px;
  overflow-x:auto;
  margin:1.6em 0;
}
.article-body pre code{background:transparent;border:0;padding:0;color:var(--text-2)}

/* 空态 */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:16px;
  text-align:center;
  padding:70px 24px;
  border-radius:var(--radius-lg);
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.empty-illu{
  width:120px;height:120px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px dashed rgba(52,224,176,.35);
  background:radial-gradient(circle at 50% 40%,rgba(52,224,176,.16),transparent 68%);
  color:var(--primary);
  font-size:34px;
}
.empty-state p{color:var(--text-2);font-size:16px}

/* ============ 文末区 ============ */
.article-end{margin-top:44px;padding-top:30px;border-top:1px solid var(--line)}
.end-block{margin-bottom:34px}
.end-title{
  display:flex;align-items:center;gap:9px;
  font-size:14px;font-weight:700;letter-spacing:1.2px;
  color:var(--text-1);
  margin-bottom:16px;
}
.end-title::before{
  content:"";width:3px;height:14px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 10px var(--glow);
}

.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.post-nav-card{
  display:flex;
  flex-direction:column;
  gap:7px;
  padding:20px 22px;
  border-radius:var(--radius-lg);
  border:1px solid var(--glass-line);
  background:var(--surface);
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.post-nav-card:hover{
  transform:translateY(-2px);
  border-color:rgba(52,224,176,.45);
  box-shadow:var(--shadow-2);
}
.post-nav-label{font-size:12px;color:var(--text-3);letter-spacing:.6px}
.post-nav-card strong{
  color:var(--text-1);
  font-size:16.5px;
  line-height:1.5;
  overflow:hidden;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}
.post-nav-desc{font-size:13px;color:var(--text-3);line-height:1.6}

.reco-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.reco-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--glass-line);
  background:var(--surface);
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.reco-card:hover{transform:translateY(-2px);border-color:rgba(52,224,176,.42);box-shadow:var(--shadow-2)}
.reco-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.reco-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.reco-card:hover .reco-thumb img{transform:scale(1.02)}
.reco-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(9,16,28,.78);backdrop-filter:blur(6px)}
.reco-body{padding:18px;display:flex;flex-direction:column;gap:9px;flex:1}
.reco-body h3{
  font-size:16px;
  line-height:1.5;
  color:var(--text-1);
  font-weight:700;
  overflow:hidden;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}
.reco-body p{
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.65;
  overflow:hidden;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
}
.reco-foot{
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
  display:flex;
  align-items:center;
  gap:7px;
}
.reco-foot i{color:var(--primary)}

.back-row{display:flex;justify-content:center;margin-top:34px}

/* ============ 侧栏 ============ */
.article-side{
  position:sticky;
  top:32px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.side-card{
  padding:20px;
  border-radius:var(--radius-lg);
  border:1px solid var(--glass-line);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-1);
}
.side-card h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:1.2px;
  color:var(--text-1);
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h4 i{color:var(--primary);font-size:13px}
.toc-list{display:flex;flex-direction:column;gap:3px;max-height:340px;overflow-y:auto}
.toc-list a{
  display:block;
  padding:8px 10px;
  border-radius:8px;
  font-size:13.5px;
  color:var(--text-3);
  line-height:1.55;
  border-left:2px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.toc-list a.is-active{
  color:var(--primary);
  background:rgba(52,224,176,.08);
  border-left-color:var(--primary);
}
.toc-empty{font-size:13px;color:var(--text-3);line-height:1.7}

.side-links{display:flex;flex-direction:column;gap:8px}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 13px;
  border-radius:var(--radius-sm);
  border:1px solid var(--glass-line);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  font-size:13.5px;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.side-links a:hover{color:var(--text-1);border-color:rgba(52,224,176,.42);background:rgba(52,224,176,.07)}
.side-links a i{color:var(--primary);font-size:12px}

.side-note{font-size:13px;color:var(--text-3);line-height:1.75}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  min-height:44px;
  padding:13px 26px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.3px;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),opacity .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#3BEDBB,#1FB48A);
  color:#04140F;
  box-shadow:0 8px 24px rgba(52,224,176,.30);
}
.btn-primary:hover{
  color:#04140F;
  transform:translateY(-2px);
  box-shadow:0 12px 32px rgba(52,224,176,.45);
  filter:brightness(1.06);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 4px 14px rgba(52,224,176,.30)}
.btn-accent{
  background:linear-gradient(135deg,#FFA765,#F0762A);
  color:#1A0C02;
  box-shadow:0 8px 24px rgba(255,138,61,.28);
}
.btn-accent:hover{color:#1A0C02;transform:translateY(-2px);box-shadow:0 12px 32px rgba(255,138,61,.42);filter:brightness(1.05)}
.btn-accent:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;
  border:1px solid var(--glass-line);
  color:var(--text-1);
}
.btn-ghost:hover{
  color:var(--text-1);
  background:rgba(255,255,255,.06);
  border-color:rgba(52,224,176,.45);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:40px;padding:10px 18px;font-size:13.5px;width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}

.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
  position:relative;
}
.link-more::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-4px;height:1px;
  background:var(--primary);
  opacity:0;
  box-shadow:0 0 10px var(--glow);
  transition:opacity .2s var(--ease);
}
.link-more:hover::after{opacity:1}

/* ============ 底部 CTA 带 ============ */
.cta-band{padding:0 0 var(--space-section)}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:34px 38px;
  border-radius:var(--radius-lg);
  border:1px solid rgba(52,224,176,.30);
  background:var(--glass);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow-2),inset 0 0 60px rgba(52,224,176,.06);
}
.cta-inner h2{font-size:26px;font-weight:800;color:var(--text-1);line-height:1.4;margin-bottom:8px}
.cta-inner p{font-size:14px;color:var(--text-3)}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-panel);
  border-top:1px solid var(--glass-line);
  padding:64px 0 0;
  margin-top:auto;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:32px;height:32px;font-size:15px;border-radius:10px}
.site-footer p{font-size:14px;line-height:1.85;color:var(--text-3);max-width:34ch}
.site-footer h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:1.4px;
  color:var(--text-1);
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--primary)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--text-2);
  line-height:1.6;
}
.footer-contact i{color:var(--primary);font-size:14px;margin-top:3px}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}

/* ============ 固定转化条 / 返回顶部 ============ */
.cta-bar{
  position:fixed;
  left:var(--side-w);
  right:0;
  bottom:0;
  height:64px;
  z-index:70;
  display:flex;
  align-items:center;
  background:rgba(11,20,36,.92);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-top:1px solid var(--glass-line);
  box-shadow:0 -10px 30px rgba(0,0,0,.45);
  transform:translateY(100%);
  opacity:0;
  pointer-events:none;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.cta-bar.is-visible{transform:translateY(0);opacity:1;pointer-events:auto}
.cta-bar-inner{
  width:100%;
  max-width:1220px;
  margin:0 auto;
  padding:0 32px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.cta-bar-text{font-size:14px;color:var(--text-2)}
.cta-bar-actions{display:flex;align-items:center;gap:18px}
.cta-bar .btn{min-height:40px;padding:10px 20px;font-size:14px}
.cta-bar-link{font-size:14px;color:var(--text-3)}
.cta-bar-link:hover{color:var(--primary)}

.to-top{
  position:fixed;
  right:26px;
  bottom:88px;
  width:44px;height:44px;
  display:grid;
  place-items:center;
  border-radius:var(--radius-pill);
  border:1px solid var(--glass-line);
  background:rgba(16,27,46,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  color:var(--text-1);
  font-size:15px;
  cursor:pointer;
  z-index:72;
  opacity:0;
  pointer-events:none;
  transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{color:var(--primary);border-color:rgba(52,224,176,.5)}

/* ============ 平板 ============ */
@media (max-width:1199px){
  :root{--side-w:72px;--space-section:72px}
  .side-panel{padding:20px 10px;gap:14px;align-items:stretch}
  .side-brand{justify-content:center;padding:0}
  .brand-text{display:none}
  .side-nav a,.side-sub a{justify-content:center;padding:12px 8px}
  .side-nav a span,.side-sub a span{display:none}
  .side-nav a::after{
    content:attr(title);
    position:absolute;
    left:62px;
    top:50%;
    transform:translateY(-50%);
    padding:7px 12px;
    border-radius:8px;
    background:var(--surface-2);
    border:1px solid var(--glass-line);
    color:var(--text-1);
    font-size:12.5px;
    white-space:nowrap;
    opacity:0;
    pointer-events:none;
    transition:opacity .18s var(--ease);
    z-index:90;
    box-shadow:var(--shadow-2);
  }
  .side-nav a:hover::after{opacity:1}
  .side-cta{display:none}
  .side-foot{font-size:10px;line-height:1.4;text-align:center}

  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .article-side{position:static;top:auto}
  .reco-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}

/* ============ 移动端 ============ */
@media (max-width:767px){
  :root{--space-section:56px}
  body{padding-bottom:72px}

  .mobile-bar{display:flex}
  .drawer-mask{display:block}

  .side-panel{
    width:min(320px,84vw);
    transform:translateX(-100%);
    box-shadow:none;
    padding:22px 16px;
    background:var(--bg-panel);
  }
  .side-panel.is-open{transform:translateX(0);box-shadow:var(--shadow-3)}
  .side-brand{justify-content:flex-start}
  .brand-text{display:block;font-size:15px}
  .side-nav a,.side-sub a{justify-content:flex-start;font-size:16px;min-height:52px}
  .side-nav a span,.side-sub a span{display:inline}
  .side-nav a::after{display:none}
  .side-cta{display:block}
  .side-cta p{font-size:13px}
  .side-cta .btn{width:100%}
  .side-foot{font-size:12px}

  .content-wrap{margin-left:0;padding-top:60px}

  .container{padding:0 18px}

  .crumb-bar{padding-top:22px}
  .breadcrumb{font-size:12.5px;gap:6px}
  .breadcrumb .current{max-width:32ch}

  .article-layout{padding:20px 0 64px;gap:28px}
  .article-head h1{font-size:30px;line-height:1.34;margin-top:14px}
  .article-meta{font-size:12.5px;gap:8px}
  .cover-frame{margin-top:20px;border-radius:12px}
  .chip{height:24px;padding:0 10px;font-size:11.5px}

  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:22px;margin-top:1.7em}
  .article-body h3{font-size:18.5px}
  .article-body blockquote{padding:15px 16px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}

  .post-nav{grid-template-columns:1fr;gap:14px}
  .reco-grid{grid-template-columns:1fr;gap:16px}

  .cta-inner{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .cta-inner h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}

  .cta-bar{
    left:0;
    height:64px;
    transform:translateY(0);
    opacity:1;
    pointer-events:auto;
  }
  .cta-bar-inner{padding:0 16px;gap:12px}
  .cta-bar-text{display:none}
  .cta-bar-actions{width:100%;gap:12px}
  .cta-bar .btn{flex:1 1 auto;width:100%}

  .to-top{right:16px;bottom:78px}

  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:34px}
  .site-footer{padding-top:48px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;font-size:12.5px}
  .site-footer p{max-width:none}
}

@media (max-width:520px){
  .article-head h1{font-size:26px}
  .container{padding:0 14px}
  .side-card{padding:16px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --bg-deep:#060B16;
  --bg-panel:#0B1424;
  --surface:#101B2E;
  --surface-2:#16233A;
  --primary:#34E0B0;
  --primary-dark:#1BB98D;
  --accent:#FF8A3D;
  --accent-2:#8B6CFF;
  --text-1:#EAF2FF;
  --text-2:#A9BACF;
  --text-3:#6C7E97;
  --line:rgba(140,180,255,.14);
  --line-strong:rgba(140,180,255,.28);
  --glass:rgba(255,255,255,.05);
  --glass-line:rgba(255,255,255,.10);
  --glow:rgba(52,224,176,.35);
  --r-lg:16px;
  --r-md:12px;
  --r-pill:999px;
  --sh-card:0 10px 30px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.06);
  --sh-hover:0 18px 44px rgba(0,0,0,.46), inset 0 1px 0 rgba(255,255,255,.09);
  --sh-pop:0 24px 60px rgba(0,0,0,.55);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec-y:96px;
}
/* ============ 基础覆盖 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  background:var(--bg-deep);
  color:var(--text-2);
  font-family:"HarmonyOS Sans","MiSans","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--text-1);font-weight:700;line-height:1.35;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
img{display:block;max-width:100%;height:auto}
a{color:var(--primary);text-decoration:none;background:transparent;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:hover,a:focus{color:var(--primary)}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit}
input,textarea,select{font-family:inherit;font-size:16px}
a:focus-visible,button:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(52,224,176,.28);color:#04140F}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#080E1A}
::-webkit-scrollbar-thumb{background:rgba(52,224,176,.3);border-radius:999px;border:2px solid #080E1A}
::-webkit-scrollbar-thumb:hover{background:rgba(52,224,176,.5)}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:240px;
  background:var(--bg-panel);
  border-right:1px solid var(--glass-line);
  display:flex;flex-direction:column;
  padding:24px 16px 20px;
  z-index:60;
  overflow-y:auto;
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.sidebar.scrolled{background:rgba(11,20,36,.88);backdrop-filter:blur(12px) saturate(140%);box-shadow:12px 0 32px rgba(0,0,0,.4)}
.brand{display:flex;align-items:center;gap:11px;padding:0 6px;margin-bottom:26px}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,#40ECC0,#159E78);
  color:#04140F;font-weight:800;font-size:17px;
  box-shadow:0 8px 22px var(--glow);
}
.brand-text strong{display:block;color:var(--text-1);font-size:14px;font-weight:700;line-height:1.35}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.1em;margin-top:2px}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:12px;
  color:var(--text-2);font-size:14.5px;line-height:1.4;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.side-nav a i{width:20px;text-align:center;font-size:15px;color:var(--text-3);transition:color .2s var(--ease)}
.side-nav a:hover{background:rgba(255,255,255,.045);color:var(--text-1)}
.side-nav a:hover i{color:var(--primary)}
.side-nav a.active{background:rgba(52,224,176,.08);color:var(--text-1);font-weight:600}
.side-nav a.active i{color:var(--primary)}
.side-nav a.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;
  background:var(--primary);box-shadow:0 0 12px var(--glow);
}
.side-divider{height:1px;background:var(--line);margin:20px 6px}
.side-sub{display:flex;flex-direction:column;gap:2px}
.side-sub a{display:flex;align-items:center;gap:10px;padding:9px 14px;border-radius:10px;font-size:13.5px;color:var(--text-3);transition:color .2s var(--ease),background .2s var(--ease)}
.side-sub a:hover{color:var(--text-1);background:rgba(255,255,255,.035)}
.side-sub a i{width:16px;text-align:center;font-size:12px}
.side-cta{
  margin-top:auto;margin-bottom:16px;padding:16px;
  border-radius:16px;background:var(--glass);
  border:1px solid var(--glass-line);
  backdrop-filter:blur(18px) saturate(140%);
}
.side-cta p{font-size:12.5px;color:var(--text-3);line-height:1.65;margin-bottom:12px}
.side-copy{font-size:11.5px;color:var(--text-3);line-height:1.65;padding:0 6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 26px;border-radius:12px;
  font-size:15px;font-weight:600;line-height:1.2;letter-spacing:.01em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn i{font-size:14px}
.btn-primary{background:linear-gradient(135deg,#3DE9B8,#1BB98D);color:#04140F;box-shadow:0 8px 24px var(--glow)}
.btn-primary:hover{background:linear-gradient(135deg,#4FF0C4,#1EC79A);color:#04140F;transform:translateY(-2px);box-shadow:0 14px 32px rgba(52,224,176,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(52,224,176,.3)}
.btn-ghost{background:transparent;border:1px solid var(--glass-line);color:var(--text-1)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--line-strong);color:var(--text-1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:linear-gradient(135deg,#FF9A55,#F2721E);color:#1A0C02;box-shadow:0 8px 24px rgba(255,138,61,.3)}
.btn-accent:hover{background:linear-gradient(135deg,#FFA96B,#FB7F2C);color:#1A0C02;transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,138,61,.42)}
.btn-accent:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:10px 18px;font-size:13.5px;border-radius:10px}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;box-shadow:none;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--primary)}
.link-more i{font-size:12px;transition:transform .2s var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:25px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:500;line-height:1;
  border:1px solid rgba(52,224,176,.4);background:rgba(52,224,176,.08);color:var(--primary);
}
.badge--violet{border-color:rgba(139,108,255,.42);background:rgba(139,108,255,.09);color:#BCA9FF}
.badge--orange{border-color:rgba(255,138,61,.42);background:rgba(255,138,61,.09);color:#FFB183}

/* ============ 布局骨架 ============ */
.page{margin-left:240px;min-height:100vh;display:flex;flex-direction:column;position:relative}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.section{padding:var(--sec-y) 0}
.section--tight{padding:72px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:34px;flex-wrap:wrap}
.sec-head h2{font-size:30px;font-weight:700;position:relative;padding-left:16px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 14px var(--glow);
}
.sec-head .sec-desc{font-size:14.5px;color:var(--text-2);max-width:620px;margin-top:10px;line-height:1.8}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.crumb a{color:var(--primary)}
.crumb a:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-color:var(--glow);text-shadow:0 0 12px rgba(52,224,176,.45)}
.crumb i{font-size:9px;color:var(--text-3);opacity:.8}
.crumb b{color:var(--text-2);font-weight:500}

/* ============ 压缩 Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;
  padding:56px 0 52px;
  display:flex;align-items:center;
  background-image:linear-gradient(92deg,rgba(6,11,22,.95) 0%,rgba(6,11,22,.82) 46%,rgba(6,11,22,.6) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.cat-hero::after{
  content:"";position:absolute;right:-160px;top:-180px;width:560px;height:560px;border-radius:50%;
  background:radial-gradient(circle,rgba(52,224,176,.22),rgba(52,224,176,0) 68%);
  pointer-events:none;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(140,180,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(140,180,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.5;pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr .9fr;gap:48px;align-items:center}
.hero-title{font-size:42px;font-weight:800;line-height:1.25;letter-spacing:-.02em;margin-bottom:16px}
.hero-title em{font-style:normal;color:var(--primary);text-shadow:0 0 26px var(--glow)}
.hero-sub{font-size:16px;color:var(--text-2);max-width:560px;line-height:1.85;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-panel{
  padding:22px;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-card);
}
.hero-panel h3{font-size:13px;color:var(--text-3);font-weight:600;letter-spacing:.1em;margin-bottom:16px}
.state-row{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.state-row:last-child{border-bottom:0;padding-bottom:0}
.state-row:first-of-type{padding-top:0}
.state-icon{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(52,224,176,.1);color:var(--primary);font-size:14px;
  border:1px solid rgba(52,224,176,.24);
}
.state-row:nth-child(3) .state-icon{background:rgba(255,138,61,.1);color:var(--accent);border-color:rgba(255,138,61,.26)}
.state-row:nth-child(4) .state-icon{background:rgba(139,108,255,.1);color:#BCA9FF;border-color:rgba(139,108,255,.26)}
.state-txt strong{display:block;font-size:14px;color:var(--text-1);font-weight:600}
.state-txt span{font-size:12.5px;color:var(--text-3)}

/* ============ 标签条 ============ */
.filter-bar{background:rgba(16,27,46,.55);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(12px) saturate(140%)}
.filter-scroll{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.filter-scroll::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
  height:36px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text-2);font-size:13.5px;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{color:var(--text-1);border-color:var(--line-strong);transform:translateY(-1px)}
.chip.is-active{background:rgba(52,224,176,.1);border-color:rgba(52,224,176,.45);color:var(--primary);font-weight:600}
.chip i{font-size:12px}

/* ============ 卡片矩阵 ============ */
.card-matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;align-items:start}
.card-matrix > .m-card:nth-child(even){margin-top:38px}
.m-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--glass-line);
  border-radius:var(--r-lg);box-shadow:var(--sh-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.m-card:hover{transform:translateY(-3px);border-color:rgba(52,224,176,.34);box-shadow:var(--sh-hover)}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.m-card:hover .thumb img{transform:scale(1.02)}
.thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,22,0) 42%,rgba(6,11,22,.68) 100%)}
.thumb .badge{position:absolute;left:16px;top:16px;z-index:2;background:rgba(6,11,22,.72);backdrop-filter:blur(8px)}
.m-body{padding:22px 22px 20px;display:flex;flex-direction:column;gap:12px;flex:1}
.m-body h3{font-size:20px;font-weight:700;line-height:1.4}
.m-body p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.m-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}
.m-meta{font-size:12.5px;color:var(--text-3);display:inline-flex;align-items:center;gap:7px}
.m-meta i{color:var(--accent-2);font-size:12px}

/* ============ 对照信息区 ============ */
.compare-panel{
  border-radius:20px;padding:34px;
  background:var(--glass);border:1px solid var(--glass-line);
  backdrop-filter:blur(18px) saturate(140%);box-shadow:var(--sh-card);
}
.compare-grid{display:flex;flex-wrap:wrap;gap:28px;margin:0}
.compare-col{flex:1 1 calc(50% - 14px);min-width:280px;padding:0}
.compare-col h3{font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:6px}
.compare-col > span{display:block;font-size:13.5px;color:var(--text-3);margin-bottom:18px}
.compare-list{display:flex;flex-direction:column;gap:2px}
.compare-list li{display:flex;gap:12px;padding:13px 0;border-top:1px solid var(--line);font-size:14.5px;color:var(--text-2);line-height:1.75}
.compare-list li i{margin-top:6px;font-size:12px;color:var(--primary);flex:0 0 auto}
.compare-col.alt .compare-list li i{color:var(--accent)}
.dot-primary{width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px var(--glow)}
.dot-accent{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px rgba(255,138,61,.45)}

/* ============ 横向时间线 ============ */
.timeline{position:relative;padding-top:8px}
.timeline-track{position:absolute;left:6px;right:6px;top:14px;height:1px;background:linear-gradient(90deg,rgba(52,224,176,.06),rgba(52,224,176,.55),rgba(52,224,176,.06))}
.timeline-list{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.tl-item{display:flex;flex-direction:column}
.tl-dot{width:12px;height:12px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 5px rgba(52,224,176,.12),0 0 16px var(--glow);margin-bottom:18px}
.tl-copy strong{display:block;font-size:15px;color:var(--text-1);font-weight:600;margin-bottom:6px}
.tl-copy span{font-size:13.5px;color:var(--text-3);line-height:1.7;display:block}
.tl-index{font-size:12px;color:var(--primary);letter-spacing:.14em;font-weight:700;margin-bottom:4px;font-variant-numeric:tabular-nums}

/* ============ 清单 ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.check-item{
  display:flex;gap:14px;padding:20px;border-radius:14px;
  background:var(--surface);border:1px solid var(--line);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.check-item:hover{border-color:rgba(52,224,176,.3);transform:translateY(-2px);box-shadow:var(--sh-card)}
.check-item i{color:var(--primary);font-size:17px;margin-top:3px;flex:0 0 auto}
.check-item strong{display:block;font-size:15.5px;color:var(--text-1);font-weight:600;margin-bottom:5px}
.check-item span{font-size:14px;color:var(--text-2);line-height:1.75}

/* ============ FAQ ============ */
.faq{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);border:1px solid var(--glass-line);
  border-radius:var(--r-lg);backdrop-filter:blur(18px) saturate(140%);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{
  position:relative;width:100%;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:16px 22px;text-align:left;
  font-size:16px;font-weight:500;color:var(--text-1);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.faq-q:hover{background:rgba(255,255,255,.035)}
.faq-q .plus{flex:0 0 auto;width:24px;height:24px;display:grid;place-items:center;color:var(--primary);font-size:15px;transition:transform .25s var(--ease)}
.faq-item.is-open .faq-q{background:rgba(52,224,176,.05)}
.faq-item.is-open .faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;
  background:var(--primary);box-shadow:0 0 12px var(--glow);
}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:2px 22px 20px;font-size:14.5px;color:var(--text-2);line-height:1.9}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;
  padding:38px 40px;border-radius:20px;
  background:linear-gradient(120deg,rgba(16,27,46,.96),rgba(11,20,36,.92));
  border:1px solid rgba(52,224,176,.3);
  box-shadow:0 20px 54px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.07);
}
.cta-band::after{
  content:"";position:absolute;left:-80px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(52,224,176,.16),rgba(52,224,176,0) 70%);pointer-events:none;
}
.cta-band h2{font-size:26px;margin-bottom:10px;position:relative;z-index:2}
.cta-band p{font-size:14.5px;color:var(--text-2);max-width:560px;position:relative;z-index:2}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* ============ 页脚 ============ */
.site-footer{margin-top:auto;background:var(--bg-panel);border-top:1px solid var(--glass-line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.25fr;gap:40px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;font-size:15px;border-radius:10px}
.site-footer h4{font-size:14px;color:var(--text-1);letter-spacing:.06em;font-weight:600;margin-bottom:16px}
.site-footer p{font-size:13.5px;color:var(--text-3);line-height:1.85;max-width:330px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--primary)}
.footer-contact{display:flex;flex-direction:column;gap:11px}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:var(--text-3);line-height:1.7}
.footer-contact i{margin-top:5px;font-size:13px;color:var(--primary);flex:0 0 auto}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  padding:18px 0 46px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 固定转化条 ============ */
.sticky-cta{
  position:fixed;left:240px;right:0;bottom:0;height:64px;z-index:70;
  display:flex;align-items:center;gap:22px;
  padding:0 32px;
  background:rgba(11,20,36,.9);
  border-top:1px solid var(--glass-line);
  backdrop-filter:blur(14px) saturate(140%);
  transform:translateY(100%);
  transition:transform .3s var(--ease);
}
.sticky-cta.is-visible{transform:translateY(0)}
.sticky-cta p{font-size:14px;color:var(--text-2);flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sticky-cta .link-more{font-size:13.5px}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:26px;bottom:88px;z-index:65;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(16,27,46,.86);border:1px solid var(--glass-line);color:var(--text-1);
  backdrop-filter:blur(12px);box-shadow:var(--sh-card);
  opacity:0;pointer-events:none;
  transition:opacity .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease);
}
.to-top.is-visible{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px);border-color:rgba(52,224,176,.4)}

/* ============ 移动端顶部条与抽屉 ============ */
.mobile-bar{display:none}
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden;opacity:0;transition:opacity .25s var(--ease),visibility .25s var(--ease)}
.drawer.is-open{visibility:visible;opacity:1}
.drawer-mask{position:absolute;inset:0;background:rgba(3,6,12,.75);backdrop-filter:blur(4px)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:84%;max-width:340px;
  background:var(--bg-panel);border-left:1px solid var(--glass-line);
  padding:24px 22px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s var(--ease);
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-head strong{font-size:15px;color:var(--text-1)}
.drawer-close{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(255,255,255,.05);border:1px solid var(--glass-line);color:var(--text-1)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  display:flex;align-items:center;gap:12px;padding:15px 16px;border-radius:12px;
  font-size:16px;color:var(--text-2);border:1px solid transparent;
}
.drawer-nav a i{width:20px;text-align:center;color:var(--text-3);font-size:15px}
.drawer-nav a.active{background:rgba(52,224,176,.08);border-color:rgba(52,224,176,.24);color:var(--text-1);font-weight:600}
.drawer-nav a.active i{color:var(--primary)}
.drawer-cta{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:12px}
.drawer-cta small{font-size:12.5px;color:var(--text-3);line-height:1.7;text-align:center}

/* ============ 响应式 ============ */
@media (min-width:768px) and (max-width:1199px){
  .sidebar{width:72px;padding:20px 0 18px;align-items:center}
  .brand{justify-content:center;padding:0;margin-bottom:22px}
  .brand-text{display:none}
  .side-nav{width:100%;align-items:center;gap:6px}
  .side-nav a{width:48px;height:48px;padding:0;justify-content:center;border-radius:12px}
  .side-nav a span{display:none}
  .side-nav a i{width:auto;font-size:17px}
  .side-nav a.active::before{left:-12px;height:18px}
  .side-divider{width:36px;margin:18px 0}
  .side-sub{width:100%;align-items:center;gap:6px}
  .side-sub a{width:44px;height:44px;padding:0;justify-content:center}
  .side-sub a span{display:none}
  .side-cta{display:none}
  .side-copy{display:none}
  .page{margin-left:72px}
  .sticky-cta{left:72px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-title{font-size:34px}
  .card-matrix{gap:22px}
  .card-matrix > .m-card:nth-child(even){margin-top:28px}
  .check-grid{grid-template-columns:1fr}
  .sec-head h2{font-size:26px}
  .timeline-list{grid-template-columns:repeat(2,1fr);gap:26px}
  .timeline-track{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .sidebar{display:none}
  .page{margin-left:0;padding-top:60px}
  .mobile-bar{
    display:flex;position:fixed;top:0;left:0;right:0;height:60px;z-index:80;
    align-items:center;justify-content:space-between;padding:0 16px;
    background:rgba(11,20,36,.9);border-bottom:1px solid var(--glass-line);
    backdrop-filter:blur(12px) saturate(140%);
  }
  .mobile-bar.scrolled{box-shadow:0 10px 26px rgba(0,0,0,.45)}
  .mobile-brand{display:flex;align-items:center;gap:9px}
  .mobile-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;font-size:15px;border-radius:10px}
  .mobile-brand strong{font-size:14.5px;color:var(--text-1);font-weight:700}
  .hamburger{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:rgba(255,255,255,.05);border:1px solid var(--glass-line);color:var(--text-1);font-size:17px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .crumb{margin-bottom:14px}
  .cat-hero{padding:40px 0 44px;background-position:center}
  .hero-grid{grid-template-columns:1fr;gap:26px}
  .hero-title{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .sec-head{margin-bottom:24px}
  .sec-head h2{font-size:24px}
  .sec-head .sec-desc{font-size:14px}
  .card-matrix{grid-template-columns:1fr;gap:20px}
  .card-matrix > .m-card:nth-child(even){margin-top:0}
  .m-body h3{font-size:18px}
  .compare-panel{padding:22px}
  .compare-grid{flex-direction:column;gap:22px}
  .compare-col{flex:1 1 100%;min-width:0}
  .timeline-track{display:none}
  .timeline-list{grid-template-columns:1fr;gap:20px}
  .tl-item{display:grid;grid-template-columns:12px 1fr;gap:14px;align-items:start}
  .tl-dot{margin:7px 0 0}
  .check-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding-top:48px}
  .footer-bottom{flex-direction:column;align-items:flex-start;padding-bottom:96px}
  .sticky-cta{left:0;padding:0 16px;gap:14px;transform:translateY(0)}
  .sticky-cta p{display:none}
  .sticky-cta .btn{flex:1}
  .sticky-cta .link-more{font-size:13px;white-space:nowrap}
  .to-top{right:16px;bottom:78px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}