/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#060B16;
  --bg-1:#0A1120;
  --bg-2:#0E1728;
  --glass-a:rgba(255,255,255,.06);
  --glass-b:rgba(255,255,255,.02);
  --brand:#1FE3C0;
  --brand-deep:#0FA88E;
  --brand-soft:rgba(31,227,192,.14);
  --accent:#FF6A2B;
  --link:#5CA8FF;
  --text-1:#EAF1FA;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(31,227,192,.35);
  --shadow-card:0 18px 44px rgba(2,6,14,.55);
  --shadow-glow:0 0 0 1px rgba(31,227,192,.5),0 10px 30px rgba(31,227,192,.28);
  --r-sm:12px;
  --r-md:18px;
  --r-lg:22px;
  --r-pill:999px;
  --sp-section:96px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"Barlow Semi Condensed","JetBrains Mono","SFMono-Regular",Consolas,monospace;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .22s ease;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(31,227,192,.28);color:#fff;}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-0);}
::-webkit-scrollbar-thumb{background:rgba(31,227,192,.25);border-radius:99px;}
::-webkit-scrollbar-thumb:hover{background:rgba(31,227,192,.45);}

/* ============ 容器与区块 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.container-narrow{max-width:860px;}
.section{padding:var(--sp-section) 0;position:relative;}
.section--alt{background:var(--bg-1);}
.section-divider{height:1px;width:100%;background:linear-gradient(90deg,transparent,rgba(31,227,192,.55),transparent);}

.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;font-weight:600;
  color:var(--brand);background:var(--brand-soft);
  border:1px solid rgba(31,227,192,.28);
  padding:5px 14px;border-radius:var(--r-pill);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand);}
h1,h2,h3{color:var(--text-1);font-weight:700;}
h2{font-size:clamp(24px,2.6vw,38px);line-height:1.3;letter-spacing:-.01em;font-weight:700;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
.section-sub{font-size:14px;color:var(--text-3);margin-top:12px;line-height:1.8;}
.lead-text{font-size:16px;color:var(--text-2);line-height:1.9;}

/* ============ 玻璃卡片 ============ */
.glass-card{
  position:relative;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(135deg,var(--glass-a),var(--glass-b));
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  padding:26px;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.glass-card.lift:hover{
  transform:translateY(-4px);
  border-color:rgba(31,227,192,.35);
  box-shadow:0 22px 52px rgba(2,6,14,.6),0 0 0 1px rgba(31,227,192,.2),inset 0 1px 0 rgba(255,255,255,.08);
}
.no-lift{transition:none;}
.no-lift:hover{transform:none;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  padding:13px 26px;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .18s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04140F;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{background:linear-gradient(135deg,#3BF2D3,var(--brand-deep));transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,227,192,.45),0 4px 14px rgba(31,227,192,.22);}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:var(--line);
  color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand);background:rgba(31,227,192,.08);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-note{display:block;font-size:12px;color:var(--text-3);margin-top:10px;letter-spacing:.02em;}

/* ============ 徽章与标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  border:1px solid rgba(31,227,192,.26);
}
.badge--accent{background:rgba(255,106,43,.13);color:var(--accent);border-color:rgba(255,106,43,.3);}
.badge--muted{background:rgba(255,255,255,.05);color:var(--text-3);border-color:var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  font-size:13px;color:var(--text-2);
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  transition:.2s ease;
}
.tag:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(31,227,192,.08);}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:120;
  display:flex;justify-content:center;
  padding:0 16px;
  pointer-events:none;
}
.nav-capsule{
  pointer-events:auto;
  width:min(1180px,100%);
  display:flex;align-items:center;gap:18px;
  padding:10px 14px 10px 20px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 12px 34px rgba(2,6,14,.42),inset 0 1px 0 rgba(255,255,255,.06);
  transition:background .3s ease,box-shadow .3s ease,padding .3s ease;
}
.site-header.is-scrolled .nav-capsule{
  padding:7px 12px 7px 18px;
  background:linear-gradient(135deg,rgba(10,17,32,.94),rgba(6,11,22,.9));
  box-shadow:0 18px 46px rgba(2,6,14,.66),inset 0 1px 0 rgba(255,255,255,.07);
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;flex-shrink:0;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04140F;font-weight:800;font-size:19px;
  box-shadow:0 0 0 1px rgba(31,227,192,.45),0 8px 20px rgba(31,227,192,.24);
  font-family:var(--font-num);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;color:var(--text-1);letter-spacing:.01em;font-weight:800;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--brand);letter-spacing:.1em;font-weight:600;}

.nav-menu{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-menu a{
  position:relative;
  display:inline-flex;align-items:center;
  height:38px;padding:0 14px;
  border-radius:var(--r-pill);
  font-size:14.5px;color:var(--text-2);
  transition:color .22s ease,background .22s ease;
}
.nav-menu a:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-menu a.active{color:var(--text-1);}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(31,227,192,.85);
}
.nav-actions{display:flex;align-items:center;gap:9px;flex-shrink:0;}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  flex-direction:column;justify-content:center;align-items:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:.25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.nav-drawer{
  position:fixed;inset:0;z-index:110;
  background:linear-gradient(160deg,rgba(6,11,22,.98),rgba(10,17,32,.98));
  backdrop-filter:blur(18px);
  padding:104px 24px 40px;
  transform:translateY(-8px);
  opacity:0;visibility:hidden;
  transition:opacity .26s ease,transform .26s ease,visibility .26s;
  overflow-y:auto;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.nav-drawer ul{display:flex;flex-direction:column;}
.nav-drawer li + li{border-top:1px solid var(--line);}
.nav-drawer li a{
  display:flex;align-items:center;gap:14px;
  height:56px;font-size:16px;color:var(--text-1);font-weight:500;
}
.nav-drawer li a span{
  font-family:var(--font-num);font-size:12px;color:var(--brand);
  letter-spacing:.06em;min-width:26px;
}
.nav-drawer li a.active{color:var(--brand);}
.nav-drawer .drawer-cta{margin-top:28px;display:flex;flex-direction:column;gap:12px;}

/* ============ 首屏 ============ */
.hero{position:relative;padding:158px 0 0;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(31,227,192,.05) 0 2px,transparent 2px 15px);
  -webkit-mask-image:radial-gradient(120% 88% at 86% 6%,#000 0%,transparent 60%);
  mask-image:radial-gradient(120% 88% at 86% 6%,#000 0%,transparent 60%);
}
.hero::after{
  content:"";position:absolute;top:-220px;right:-180px;width:760px;height:760px;
  background:radial-gradient(circle,rgba(31,227,192,.14),transparent 65%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;
  min-height:min(76vh,720px);
  padding-bottom:56px;
}
.hero-copy h1{
  font-size:clamp(32px,4.6vw,56px);
  font-weight:800;letter-spacing:-.02em;line-height:1.2;
  margin:20px 0 0;
}
.hero-copy h1 .hl{
  background:linear-gradient(120deg,var(--brand),#7CF0DA 60%,var(--brand-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  font-size:17px;color:var(--text-2);line-height:1.85;
  margin-top:20px;max-width:540px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:30px;}
.hero-trust li{
  display:flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-3);
}
.hero-trust li i{color:var(--brand);font-size:12px;}

.hero-visual{position:relative;}
.hero-photo{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:4/3;
  box-shadow:var(--shadow-card);
}
.hero-photo img{width:100%;height:100%;object-fit:cover;}
.hero-photo::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,22,.05),rgba(6,11,22,.65));
}
.hero-status{
  position:absolute;left:-22px;bottom:26px;
  width:min(300px,86%);
  padding:20px 22px;
  border-radius:var(--r-md);
  border:1px solid rgba(31,227,192,.28);
  background:linear-gradient(135deg,rgba(14,23,40,.92),rgba(6,11,22,.86));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 22px 48px rgba(2,6,14,.7),inset 0 1px 0 rgba(255,255,255,.07);
}
.hero-status .status-title{
  font-size:12.5px;letter-spacing:.14em;color:var(--brand);
  font-weight:700;margin-bottom:12px;
}
.hero-status dl{display:flex;flex-direction:column;gap:10px;margin:0;}
.hero-status .st-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;}
.hero-status .st-row dt{color:var(--text-3);}
.hero-status .st-row dd{margin:0;color:var(--text-1);font-weight:600;font-family:var(--font-num);letter-spacing:.02em;}
.dot-live{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-family:var(--font-cn);font-size:13px;
}
.dot-live::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 0 0 rgba(31,227,192,.7);animation:pulse 2s infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(31,227,192,.6);}
  70%{box-shadow:0 0 0 9px rgba(31,227,192,0);}
  100%{box-shadow:0 0 0 0 rgba(31,227,192,0);}
}

.hero-stats{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-radius:0 0 var(--r-md) var(--r-md);
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
  backdrop-filter:blur(10px);
  overflow:hidden;
}
.hero-stats .stat{
  padding:26px 24px;
  border-right:1px solid var(--line);
}
.hero-stats .stat:last-child{border-right:none;}
.hero-stats .stat-num{
  display:block;font-family:var(--font-num);font-size:34px;line-height:1;
  color:var(--brand);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.hero-stats .stat-label{
  display:block;font-size:13px;color:var(--text-3);margin-top:10px;line-height:1.6;
}

/* ============ 能力区（非对称） ============ */
.cap-grid{display:grid;grid-template-columns:7fr 5fr;gap:26px;align-items:stretch;}
.cap-main{display:flex;flex-direction:column;gap:20px;padding:0;overflow:hidden;}
.cap-main .cap-figure{
  border-radius:var(--r-md) var(--r-md) 0 0;overflow:hidden;
  aspect-ratio:16/9;border-bottom:1px solid var(--line);
}
.cap-main .cap-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.cap-main:hover .cap-figure img{transform:scale(1.04);}
.cap-main .cap-body{padding:4px 26px 28px;display:flex;flex-direction:column;gap:14px;}
.cap-main .cap-body h3{font-size:22px;}
.cap-list{display:flex;flex-direction:column;gap:11px;margin-top:4px;}
.cap-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.7;}
.cap-list li i{color:var(--brand);font-size:12px;margin-top:8px;flex-shrink:0;}

.cap-side{display:flex;flex-direction:column;justify-content:space-between;gap:22px;}
.cap-side .side-icon{
  width:52px;height:52px;border-radius:15px;display:grid;place-items:center;
  background:var(--brand-soft);border:1px solid rgba(31,227,192,.3);
  color:var(--brand);font-size:20px;
}
.cap-side h3{font-size:21px;}
.cap-side p{font-size:14.5px;line-height:1.85;color:var(--text-2);}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand);font-size:14px;font-weight:600;
}
.text-link i{transition:transform .22s ease;}
.text-link:hover{color:#6FF3DC;}
.text-link:hover i{transform:translateX(4px);}

.cap-row{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:26px;}
.cap-mini{position:relative;overflow:hidden;padding-top:30px;}
.cap-mini::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brand),rgba(31,227,192,.05));
}
.cap-mini .mini-num{
  font-family:var(--font-num);font-size:13px;letter-spacing:.16em;
  color:var(--accent);font-weight:700;
}
.cap-mini h3{font-size:18px;margin:12px 0 10px;}
.cap-mini p{font-size:14.5px;line-height:1.8;color:var(--text-2);}

/* ============ 数据区 ============ */
.metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.metric{
  padding:30px 26px;border-radius:var(--r-md);
  border:1px solid var(--line);
  background:linear-gradient(150deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.metric:hover{transform:translateY(-4px);border-color:rgba(31,227,192,.35);box-shadow:0 20px 48px rgba(2,6,14,.6),0 0 0 1px rgba(31,227,192,.18);}
.metric .m-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:clamp(40px,4vw,52px);line-height:1;font-weight:700;
  color:var(--text-1);letter-spacing:-.01em;
}
.metric .m-num small{font-size:20px;color:var(--brand);margin-left:4px;font-weight:600;}
.metric .m-title{margin-top:16px;font-size:16px;color:var(--text-1);font-weight:600;}
.metric .m-desc{margin-top:8px;font-size:13px;color:var(--text-3);line-height:1.75;}

/* ============ 场景案例（交错） ============ */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.case-col{display:flex;flex-direction:column;gap:28px;}
.case-col:nth-child(2){margin-top:48px;}
.case-card{overflow:hidden;padding:0;}
.case-card .case-figure{
  position:relative;aspect-ratio:16/10;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.case-card .case-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.case-card .case-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(6,11,22,.7));
  transition:background .3s ease;
}
.case-card:hover .case-figure img{transform:scale(1.04);}
.case-card:hover .case-figure::after{background:linear-gradient(180deg,transparent 25%,rgba(6,11,22,.85));}
.case-card .case-body{padding:24px 26px 28px;display:flex;flex-direction:column;gap:12px;}
.case-card .case-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.case-card h3{font-size:19px;}
.case-card p{font-size:14.5px;line-height:1.8;color:var(--text-2);}
.case-arrow{
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-3);font-size:12px;
  transition:.24s ease;flex-shrink:0;
}
.case-card:hover .case-arrow{
  border-color:var(--line-strong);color:var(--brand);transform:translateX(4px);
  background:rgba(31,227,192,.1);
}

/* ============ 流程步骤 ============ */
.plan-grid{display:grid;grid-template-columns:260px 1fr;gap:52px;align-items:start;}
.plan-nav{position:sticky;top:118px;display:flex;flex-direction:column;gap:0;}
.plan-nav li{
  position:relative;padding:0 0 26px 30px;
}
.plan-nav li::before{
  content:"";position:absolute;left:9px;top:22px;bottom:0;width:1px;
  background:linear-gradient(180deg,rgba(31,227,192,.4),rgba(31,227,192,.05));
}
.plan-nav li:last-child{padding-bottom:0;}
.plan-nav li:last-child::before{display:none;}
.plan-nav .pn-dot{
  position:absolute;left:0;top:4px;width:19px;height:19px;border-radius:50%;
  border:1px solid rgba(31,227,192,.45);background:rgba(31,227,192,.12);
  display:grid;place-items:center;
}
.plan-nav .pn-dot::after{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand);}
.plan-nav .pn-num{font-family:var(--font-num);font-size:12px;letter-spacing:.14em;color:var(--text-3);font-weight:700;}
.plan-nav .pn-title{font-size:16px;color:var(--text-1);font-weight:600;margin-top:4px;}
.plan-nav .pn-desc{font-size:13px;color:var(--text-3);margin-top:5px;line-height:1.7;}

.plan-body{display:flex;flex-direction:column;gap:24px;}
.plan-item{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center;padding:26px;}
.plan-item .pi-figure{
  border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/10;
}
.plan-item .pi-figure img{width:100%;height:100%;object-fit:cover;}
.plan-item h3{font-size:20px;display:flex;align-items:baseline;gap:12px;}
.plan-item h3 .idx{
  font-family:var(--font-num);font-size:14px;color:var(--accent);letter-spacing:.1em;font-weight:700;
}
.plan-item p{font-size:14.5px;line-height:1.85;color:var(--text-2);margin-top:12px;}
.plan-item:nth-child(even){direction:rtl;}
.plan-item:nth-child(even) > *{direction:ltr;}

/* ============ 最新信息 CMS ============ */
.cms-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:36px;}
.cms-grid{display:grid;grid-template-columns:7fr 5fr;gap:26px;align-items:stretch;}
.cms-lead{display:flex;flex-direction:column;padding:0;overflow:hidden;min-height:100%;}
.cms-lead .lead-figure{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);}
.cms-lead .lead-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.cms-lead:hover .lead-figure img{transform:scale(1.04);}
.cms-lead .lead-body{padding:24px 28px 28px;display:flex;flex-direction:column;gap:12px;flex:1;}
.cms-lead h3{font-size:22px;line-height:1.45;}
.cms-lead p{font-size:14.5px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
.cms-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);}

.cms-side{display:flex;flex-direction:column;gap:16px;}
.cms-item{
  display:flex;flex-direction:column;gap:10px;
  padding:20px 22px;flex:1;
}
.cms-item h3{font-size:16.5px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-item p{font-size:13.5px;line-height:1.75;color:var(--text-3);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

.cms-empty{
  min-height:220px;width:100%;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  border-radius:var(--r-md);border:1px dashed var(--line);
  background:linear-gradient(135deg,rgba(255,255,255,.04),rgba(255,255,255,.01));
  text-align:center;padding:36px 24px;
}
.cms-empty i{font-size:26px;color:var(--brand);opacity:.7;}
.cms-empty p{font-size:14.5px;color:var(--text-3);}

/* ============ FAQ ============ */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:0;}
.faq-item{
  border-bottom:1px solid var(--line);
  border-radius:var(--r-sm);
  transition:background .25s ease,box-shadow .25s ease,padding .25s ease;
}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:22px 52px 22px 4px;
  font-size:17px;font-weight:600;color:var(--text-1);
  line-height:1.6;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f078";
  font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--text-3);
  transition:transform .2s ease,color .2s ease;
}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary:hover::after{color:var(--brand);}
.faq-item[open]{
  background:linear-gradient(135deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  box-shadow:inset 3px 0 0 var(--brand);
  padding-left:20px;
  padding-right:16px;
}
.faq-item[open] summary{padding-left:0;}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(180deg);color:var(--brand);}
.faq-answer{padding:0 4px 24px 0;font-size:15px;line-height:1.85;color:var(--text-2);}

/* ============ 联系表单 ============ */
.contact-grid{display:grid;grid-template-columns:6fr 6fr;gap:28px;align-items:stretch;}
.form-card{padding:32px;}
.form-row{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.form-row label{font-size:13.5px;color:var(--text-3);letter-spacing:.02em;}
.form-row input,
.form-row textarea,
.form-row select{
  width:100%;
  background:rgba(6,11,22,.72);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:13px 16px;
  font-size:14.5px;
  color:var(--text-1);
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.form-row input::placeholder,
.form-row textarea::placeholder{color:#4C5A6E;}
.form-row input:hover,
.form-row textarea:hover{border-color:rgba(255,255,255,.18);}
.form-row input:focus,
.form-row textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(31,227,192,.16);
  background:rgba(6,11,22,.9);
}
.form-row textarea{resize:vertical;min-height:112px;line-height:1.75;}
.form-tip{
  display:none;margin-top:14px;font-size:13.5px;color:var(--brand);
  background:var(--brand-soft);border:1px solid rgba(31,227,192,.26);
  border-radius:var(--r-sm);padding:11px 16px;
}
.form-tip.is-show{display:block;}

.info-card{padding:32px;display:flex;flex-direction:column;gap:22px;}
.info-item{display:flex;gap:16px;align-items:flex-start;}
.info-item .info-icon{
  width:46px;height:46px;flex-shrink:0;border-radius:14px;
  display:grid;place-items:center;
  background:var(--brand-soft);border:1px solid rgba(31,227,192,.28);
  color:var(--brand);font-size:17px;
}
.info-item h3{font-size:16px;margin-bottom:5px;}
.info-item p{font-size:14px;color:var(--text-2);line-height:1.7;}
.info-item a{color:var(--link);}
.info-item a:hover{color:var(--brand);}
.info-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(31,227,192,.4),transparent);}

/* ============ CTA 条 ============ */
.cta-band{position:relative;overflow:hidden;}
.cta-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:44px 44px;
  border-radius:var(--r-lg);
  border:1px solid rgba(31,227,192,.28);
  background:linear-gradient(120deg,rgba(31,227,192,.14),rgba(14,23,40,.85) 55%,rgba(6,11,22,.9));
  box-shadow:0 26px 60px rgba(2,6,14,.66),inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(12px);
}
.cta-inner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.035) 0 2px,transparent 2px 16px);
  -webkit-mask-image:radial-gradient(90% 140% at 12% 50%,#000,transparent 70%);
  mask-image:radial-gradient(90% 140% at 12% 50%,#000,transparent 70%);
}
.cta-inner h2{font-size:clamp(22px,2.2vw,30px);position:relative;}
.cta-inner p{font-size:14.5px;color:var(--text-2);margin-top:10px;position:relative;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;}

/* ============ 页脚 ============ */
.site-footer{
  background:#04070E;
  border-top:1px solid transparent;
  background-image:linear-gradient(#04070E,#04070E),linear-gradient(90deg,transparent,rgba(31,227,192,.5),transparent);
  background-origin:border-box;
  background-clip:padding-box,border-box;
  padding:72px 0 0;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:13.5px;color:var(--text-3);line-height:1.85;max-width:320px;}
.footer-col h4{font-size:14px;color:var(--text-1);letter-spacing:.06em;margin-bottom:18px;font-weight:600;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul a,.footer-col ul li{font-size:13.5px;color:var(--text-3);}
.footer-col ul a{display:inline-block;transition:color .22s ease,transform .22s ease;}
.footer-col ul a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-3);}
.footer-bottom a:hover{color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-grid{gap:40px;}
  .cap-grid,.cms-grid{gap:22px;}
  .plan-grid{gap:38px;}
}
@media (max-width:1023px){
  :root{--sp-section:72px;}
  .hero{padding-top:140px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;min-height:auto;padding-bottom:44px;}
  .hero-status{position:static;width:100%;margin-top:-46px;}
  .hero-photo{aspect-ratio:16/10;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .hero-stats .stat:nth-child(2){border-right:none;}
  .hero-stats .stat:nth-child(1),
  .hero-stats .stat:nth-child(2){border-bottom:1px solid var(--line);}
  .cap-grid{grid-template-columns:1fr;}
  .cap-row{grid-template-columns:1fr 1fr;}
  .metric-row{grid-template-columns:repeat(2,1fr);}
  .plan-grid{grid-template-columns:1fr;gap:32px;}
  .plan-nav{position:static;flex-direction:row;flex-wrap:wrap;gap:12px;}
  .plan-nav li{padding:0;flex:1 1 180px;}
  .plan-nav li::before{display:none;}
  .plan-nav .pn-dot{position:static;display:inline-grid;margin-bottom:8px;}
  .cms-grid{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .nav-menu{display:none;}
  .nav-actions{display:none;}
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-capsule{border-radius:22px;padding:10px 12px 10px 16px;}
  .site-header.is-scrolled .nav-capsule{border-radius:20px;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  .container{padding:0 16px;}
  .section-head{margin-bottom:32px;}
  .hero{padding-top:124px;}
  .hero-sub{font-size:15.5px;}
  .hero-cta .btn{width:100%;}
  .hero-cta{flex-direction:column;}
  .hero-trust{gap:8px 16px;}
  .hero-status{left:0;padding:18px;}
  .cap-row{grid-template-columns:1fr;}
  .metric-row{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:1fr;}
  .case-col:nth-child(2){margin-top:0;}
  .plan-item{grid-template-columns:1fr;padding:22px;}
  .plan-item:nth-child(even){direction:ltr;}
  .cta-inner{padding:32px 24px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .form-card,.info-card{padding:24px;}
  .faq-item summary{font-size:16px;padding:18px 44px 18px 2px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519px){
  h2{font-size:23px;}
  .hero-copy h1{font-size:29px;}
  .hero-stats{grid-template-columns:1fr;}
  .hero-stats .stat{border-right:none;border-bottom:1px solid var(--line);padding:20px;}
  .hero-stats .stat:last-child{border-bottom:none;}
  .metric .m-num{font-size:38px;}
  .btn{padding:12px 20px;font-size:14.5px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:10.5px;}
}

/* roulang page: article */
:root{
  --bg-0:#060B16;
  --bg-1:#0A1120;
  --bg-2:#0E1728;
  --glass-1:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.02);
  --brand:#1FE3C0;
  --brand-deep:#0FA88E;
  --brand-soft:rgba(31,227,192,.14);
  --accent:#FF6A2B;
  --accent-soft:rgba(255,106,43,.12);
  --link:#5CA8FF;
  --text-1:#EAF1FA;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(31,227,192,.35);
  --shadow-card:0 18px 44px rgba(2,6,14,.55);
  --shadow-soft:0 10px 28px rgba(2,6,14,.40);
  --glow:0 0 0 1px rgba(31,227,192,.5),0 10px 30px rgba(31,227,192,.28);
  --r-card:18px;
  --r-card-lg:22px;
  --r-btn:12px;
  --r-pill:999px;
  --r-sm:10px;
  --mono:"JetBrains Mono","Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sans:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --ease:220ms cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --pad:24px;
}
*{box-sizing:border-box}
*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background:var(--bg-0);
  background-image:
    radial-gradient(1000px 520px at 12% -8%, rgba(31,227,192,.10), transparent 62%),
    radial-gradient(900px 480px at 92% 4%, rgba(92,168,255,.09), transparent 60%),
    linear-gradient(180deg,#060B16 0%,#070D1A 48%,#060B16 100%);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:14px}
a{color:var(--link);text-decoration:none}
a:hover{color:var(--brand)}
h1,h2,h3,h4{color:var(--text-1);margin:0;line-height:1.3}
h1{font-size:clamp(32px,4.6vw,56px);font-weight:800;letter-spacing:-.02em;line-height:1.2}
h2{font-size:clamp(24px,2.6vw,38px);font-weight:700;letter-spacing:-.01em}
h3{font-size:20px;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(31,227,192,.28);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--pad)}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.divider-glow{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);border:0;margin:0}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:90;
  display:flex;justify-content:center;pointer-events:none;
}
.nav-capsule{
  pointer-events:auto;
  width:min(1180px,calc(100% - 32px));
  display:flex;align-items:center;gap:18px;
  padding:10px 12px 10px 18px;
  border-radius:var(--r-pill);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-soft);
  transition:background var(--ease),box-shadow var(--ease),padding var(--ease),border-color var(--ease);
}
.site-header.is-scrolled .nav-capsule{
  background:linear-gradient(180deg,rgba(10,17,32,.92),rgba(10,17,32,.78));
  border-color:rgba(31,227,192,.22);
  box-shadow:0 16px 44px rgba(2,6,14,.62);
  padding-top:7px;padding-bottom:7px;
}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04121A;font-weight:800;font-size:17px;font-family:var(--mono);
  box-shadow:0 6px 18px rgba(31,227,192,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-text strong{font-size:16px;color:var(--text-1);letter-spacing:.02em;font-weight:800}
.brand-text em{font-style:normal;font-size:11px;color:var(--brand);letter-spacing:.14em}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--text-2);transition:color var(--ease),background var(--ease);
}
.nav-menu a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-menu a:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.active{color:var(--brand);background:var(--brand-soft)}
.nav-menu a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:50px;padding:0 28px;font-size:16px}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#04121A;box-shadow:0 8px 24px rgba(31,227,192,.24)}
.btn-primary:hover{color:#04121A;transform:translateY(-1px);box-shadow:var(--glow)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand);background:var(--brand-soft)}
.btn-outline{border-color:rgba(255,106,43,.5);color:#FFB694;background:var(--accent-soft)}
.btn-outline:hover{color:#FFD6C2;border-color:var(--accent);background:rgba(255,106,43,.2)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none;box-shadow:none}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:14px;flex:none;
  background:rgba(255,255,255,.05);border:1px solid var(--line);cursor:pointer;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform var(--ease),opacity var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.nav-drawer{
  position:fixed;inset:0;z-index:80;
  background:linear-gradient(180deg,rgba(6,11,22,.97),rgba(10,17,32,.99));
  backdrop-filter:blur(12px);
  padding:104px 20px 32px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  overflow-y:auto;
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-menu li+li{border-top:1px solid var(--line)}
.drawer-menu a{
  display:flex;align-items:center;gap:14px;min-height:48px;
  font-size:17px;color:var(--text-1);padding:6px 4px;
}
.drawer-menu a.active{color:var(--brand)}
.drawer-idx{font-family:var(--mono);font-size:12px;color:var(--text-3);letter-spacing:.1em}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:26px}
.drawer-actions .btn{width:100%}

/* ---------- page shell ---------- */
.page{padding-top:132px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3)}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:rgba(255,255,255,.18)}
.crumbs .current{color:var(--text-2);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:13px;line-height:1;
  background:var(--brand-soft);color:var(--brand);border:1px solid rgba(31,227,192,.3);
}
.badge-accent{background:var(--accent-soft);color:#FFB694;border-color:rgba(255,106,43,.35)}
.badge-mute{background:rgba(255,255,255,.05);color:var(--text-3);border-color:var(--line)}

/* ---------- article head ---------- */
.article-head{position:relative;overflow:hidden;padding:44px 0 40px;border-bottom:1px solid var(--line)}
.article-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(31,227,192,.06) 0 1px,transparent 1px 15px);
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 35%,transparent 92%);
  mask-image:linear-gradient(90deg,transparent 0%,#000 35%,transparent 92%);
}
.article-head .wrap{position:relative;z-index:1;max-width:900px}
.article-head h1{margin:18px 0 20px;font-size:clamp(28px,3.6vw,46px)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13.5px;color:var(--text-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.2)}
.article-meta time{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--text-2)}

/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;align-items:start}
.article-layout.has-toc{grid-template-columns:minmax(0,1fr) 260px}
.article-main{min-width:0}
.article-body{max-width:820px;font-size:16px;line-height:1.9;color:var(--text-2)}
.article-body h2{
  font-size:clamp(22px,2.2vw,30px);margin:48px 0 16px;padding-left:14px;
  border-left:3px solid var(--brand);scroll-margin-top:120px;
}
.article-body h3{font-size:20px;margin:34px 0 12px;color:var(--text-1);scroll-margin-top:120px}
.article-body h4{font-size:17px;margin:26px 0 10px;color:var(--text-1)}
.article-body p{margin:0 0 1.4em}
.article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:22px}
.article-body ul li{list-style:disc;margin-bottom:10px}
.article-body ol li{list-style:decimal;margin-bottom:10px}
.article-body li::marker{color:var(--brand)}
.article-body a{color:var(--link);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand)}
.article-body img{width:100%;height:auto;border-radius:14px;border:1px solid var(--line);margin:26px 0;object-fit:cover}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--brand);
  border-radius:12px;background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;overflow:hidden;border-radius:12px;border:1px solid var(--line)}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{color:var(--text-1);background:rgba(255,255,255,.04);font-weight:600}
.article-body tr:last-child td{border-bottom:0}
.article-body hr{border:0;height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);margin:38px 0}
.article-body code{font-family:var(--mono);font-size:.92em;background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;color:var(--brand)}

.article-toc{
  position:sticky;top:104px;align-self:start;padding:20px;
  border-radius:var(--r-card);
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.toc-title{font-size:12px;letter-spacing:.18em;color:var(--text-3);margin-bottom:12px;font-family:var(--mono)}
.toc-list li a{
  display:block;padding:8px 10px;border-radius:10px;font-size:14px;line-height:1.6;
  color:var(--text-2);border-left:2px solid transparent;transition:all var(--ease);
}
.toc-list li a:hover{color:var(--brand);background:rgba(255,255,255,.04);border-left-color:var(--brand);transform:translateX(2px)}

.article-empty{
  max-width:820px;padding:48px 28px;text-align:center;border-radius:var(--r-card);
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.article-empty h3{margin-bottom:12px;font-size:20px}
.article-empty p{margin-bottom:22px}

/* ---------- related ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.section-head .sub{font-size:14px;color:var(--text-3);margin-top:10px;max-width:640px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-card);
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--glow)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;border:0;transition:transform 420ms ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(6,11,22,.75));opacity:.8;transition:opacity var(--ease)}
.card:hover .card-media::after{opacity:1}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;line-height:1.5}
.card-body p{font-size:14px;line-height:1.75;color:var(--text-3)}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:8px;font-size:13px;color:var(--text-3)}
.card-foot .arrow{color:var(--brand);transition:transform var(--ease)}
.card:hover .card-foot .arrow{transform:translateX(4px)}

/* ---------- back links + cta ---------- */
.back-links{display:flex;flex-wrap:wrap;gap:12px}
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-card-lg);
  padding:44px;
  background:linear-gradient(135deg,rgba(31,227,192,.12),rgba(255,255,255,.03) 45%,rgba(92,168,255,.10));
  border:1px solid rgba(31,227,192,.28);
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:minmax(0,1.4fr) auto;gap:32px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(31,227,192,.05) 0 1px,transparent 1px 16px);
  -webkit-mask-image:linear-gradient(90deg,#000,transparent 70%);
  mask-image:linear-gradient(90deg,#000,transparent 70%);
}
.cta-band h2{font-size:clamp(22px,2.4vw,32px);margin-bottom:14px;position:relative;z-index:1}
.cta-band p{font-size:15px;max-width:620px;position:relative;z-index:1}
.cta-actions{display:flex;flex-direction:column;gap:12px;position:relative;z-index:1}
.cta-note{font-size:12px;color:var(--text-3);text-align:right}

/* ---------- footer ---------- */
.site-footer{position:relative;background:#04070F;padding:64px 0 28px;margin-top:96px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-3);margin-top:16px;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text-1)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a,.footer-col ul li{font-size:14px;color:var(--text-3);line-height:1.7}
.footer-col ul li a{display:inline-block;transition:color var(--ease),transform var(--ease)}
.footer-col ul li a:hover{color:var(--brand);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- breakpoints ---------- */
@media (max-width:1279px){
  .nav-menu a{padding:0 11px;font-size:14px}
}
@media (max-width:1023px){
  :root{--pad:20px}
  .nav-menu{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .section{padding:72px 0}
  .article-layout.has-toc{grid-template-columns:minmax(0,1fr)}
  .article-toc{display:none}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:34px}
  .cta-actions{flex-direction:row;flex-wrap:wrap}
  .cta-note{text-align:left}
}
@media (max-width:767px){
  :root{--pad:16px}
  .page{padding-top:112px}
  .nav-capsule{padding:8px 10px 8px 14px;gap:10px}
  .brand-text strong{font-size:15px}
  .brand-text em{font-size:10px;letter-spacing:.1em}
  .section{padding:56px 0}
  .article-head{padding:28px 0 30px}
  .grid-3{grid-template-columns:minmax(0,1fr);gap:16px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .back-links .btn{width:100%}
  .crumbs .current{max-width:70vw}
}
@media (max-width:479px){
  body{font-size:15px;line-height:1.8}
  .btn{width:100%}
  .nav-actions{gap:8px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
  --bg-0:#060B16;
  --bg-1:#0A1120;
  --bg-2:#0E1728;
  --brand:#1FE3C0;
  --brand-deep:#0FA88E;
  --brand-soft:rgba(31,227,192,.14);
  --accent:#FF6A2B;
  --link:#5CA8FF;
  --text-1:#EAF1FA;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(31,227,192,.35);
  --glass-a:rgba(255,255,255,.06);
  --glass-b:rgba(255,255,255,.02);
  --shadow-card:0 18px 44px rgba(2,6,14,.55);
  --shadow-inner:0 1px 0 rgba(255,255,255,.06);
  --glow:0 0 0 1px rgba(31,227,192,.5),0 10px 30px rgba(31,227,192,.28);
  --radius-sm:12px;
  --radius-md:18px;
  --radius-lg:22px;
  --radius-pill:999px;
  --container:1200px;
  --ease:220ms ease;
  --font-cn:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.25;font-weight:700}
p{margin:0}
strong{color:var(--text-1)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(31,227,192,.28);color:#04150f}

.container{width:min(var(--container),100%);margin:0 auto;padding:0 24px}
.section{position:relative;padding:96px 0}
.section--alt{background:var(--bg-1)}
.section-line{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,var(--line-strong),transparent)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:var(--brand-soft);border:1px solid var(--line-strong);
  color:var(--brand);font-size:13px;letter-spacing:.06em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand)}

.section-head{max-width:780px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,2.6vw,38px);font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:12px;font-size:14px;color:var(--text-3)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
h3{font-size:20px;font-weight:600}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease);
  cursor:pointer;
}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#04150f;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.07)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,227,192,.35)}
.btn-ghost{border-color:var(--line);background:rgba(255,255,255,.03);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-outline{border-color:rgba(255,106,43,.5);color:#FFB392;background:rgba(255,106,43,.08)}
.btn-outline:hover{background:rgba(255,106,43,.16);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-note{font-size:12px;color:var(--text-3)}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.04em;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-2);
}
.badge--brand{background:var(--brand-soft);border-color:var(--line-strong);color:var(--brand)}
.badge--accent{background:rgba(255,106,43,.12);border-color:rgba(255,106,43,.4);color:#FFB392}
.badge--muted{color:var(--text-3)}

/* 导航 */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:60;
  display:flex;justify-content:center;padding:0 16px;
}
.nav-capsule{
  width:min(1180px,100%);
  display:flex;align-items:center;gap:22px;
  padding:10px 14px 10px 18px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b)),rgba(10,17,32,.74);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 12px 34px rgba(2,6,14,.42);
  transition:padding var(--ease),background var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled .nav-capsule{
  padding:6px 14px 6px 18px;
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.03)),rgba(8,14,26,.9);
  box-shadow:0 16px 40px rgba(2,6,14,.62);
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04150f;font-weight:800;font-size:18px;
  box-shadow:0 6px 18px rgba(31,227,192,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:15px;color:var(--text-1);letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;color:var(--brand);letter-spacing:.14em}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-menu a{
  position:relative;display:flex;align-items:center;
  min-height:40px;padding:0 14px;border-radius:var(--radius-pill);
  font-size:14.5px;color:var(--text-2);
  transition:color var(--ease),background var(--ease);
}
.nav-menu a:hover{color:var(--text-1);background:rgba(255,255,255,.06)}
.nav-menu a.active{color:var(--brand);background:var(--brand-soft)}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(31,227,192,.6);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;order:2}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;order:3;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.nav-capsule.is-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-capsule.is-open .nav-toggle span:nth-child(2){opacity:0}
.nav-capsule.is-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero{position:relative;overflow:hidden;padding:160px 0 88px;background:var(--bg-0)}
.hero-bg{position:absolute;inset:0;background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;opacity:.3}
.hero-shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,22,.6),rgba(6,11,22,.92) 62%,var(--bg-0))}
.hero-stripes{
  position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(45deg,rgba(31,227,192,.05) 0 2px,transparent 2px 16px);
  -webkit-mask-image:radial-gradient(120% 90% at 82% 8%,#000 0%,transparent 68%);
  mask-image:radial-gradient(120% 90% at 82% 8%,#000 0%,transparent 68%);
}
.hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.crumb a{color:var(--text-3);transition:color var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb span{color:var(--text-2)}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero h1{
  margin-top:18px;
  font-size:clamp(32px,4.6vw,56px);
  font-weight:800;letter-spacing:-.02em;line-height:1.2;
}
.hero-sub{margin-top:20px;font-size:16px;color:var(--text-2);max-width:620px}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:32px}
.trust-list{display:flex;flex-wrap:wrap;gap:18px;margin-top:30px}
.trust-list li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.trust-list li::before{
  content:"";width:8px;height:8px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 8px rgba(31,227,192,.7);
}

.hero-panel{
  position:relative;
  padding:26px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b)),rgba(14,23,40,.72);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--shadow-card),var(--shadow-inner);
}
.hero-panel::before{
  content:"";position:absolute;left:26px;right:26px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.panel-time{font-family:var(--font-num);font-size:12px;color:var(--text-3);letter-spacing:.06em}
.panel-list{display:grid;gap:2px}
.panel-list li{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 0;border-bottom:1px dashed var(--line);
}
.panel-list li:last-child{border-bottom:0}
.panel-list span{font-size:14px;color:var(--text-3)}
.panel-list strong{font-size:15px;font-weight:600;color:var(--text-1)}
.panel-list .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--brand)}
.panel-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.panel-link i{font-style:normal;transition:transform var(--ease)}
.panel-link:hover i{transform:translateX(4px)}

/* 时间轴 */
.timeline{position:relative;display:grid;gap:18px;counter-reset:step}
.timeline::before{
  content:"";position:absolute;left:31px;top:24px;bottom:24px;width:1px;
  background:linear-gradient(180deg,transparent,var(--line-strong),transparent);
}
.tl-item{
  position:relative;display:grid;grid-template-columns:64px 1fr;gap:20px;
  padding:24px 26px 24px 0;
  border:1px solid var(--line);border-radius:var(--radius-md);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b)),var(--bg-1);
  box-shadow:var(--shadow-inner);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.tl-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card)}
.tl-num{
  justify-self:center;align-self:start;
  font-family:var(--font-num);font-size:24px;font-weight:700;

  color:var(--brand);
  padding-top:2px;
}
.tl-body h3{font-size:20px}
.tl-body p{margin-top:10px;font-size:15px;color:var(--text-2)}
.tl-meta{display:inline-block;margin-top:12px;font-size:13px;color:var(--text-3);font-family:var(--font-num)}

/* 入口卡片 */
.entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.entry-card{
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b)),var(--bg-2);
  box-shadow:var(--shadow-inner);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.entry-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card)}
.entry-link{display:block;height:100%}
.entry-media{position:relative;aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line)}
.entry-media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease}
.entry-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,22,.05),rgba(6,11,22,.55));
  transition:background var(--ease);
}
.entry-card:hover .entry-media img{transform:scale(1.04)}
.entry-card:hover .entry-media::after{background:linear-gradient(180deg,rgba(6,11,22,.15),rgba(6,11,22,.75))}
.entry-body{padding:24px 26px 26px}
.entry-body h3{margin-top:14px;font-size:20px}
.entry-body p{margin-top:10px;font-size:14.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.entry-more{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.entry-more i{font-style:normal;transition:transform var(--ease)}
.entry-card:hover .entry-more i{transform:translateX(5px)}

/* 核对清单 */
.check-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.check-card{
  position:relative;padding:28px 24px;
  border:1px solid var(--line);border-radius:var(--radius-md);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b)),var(--bg-1);
  box-shadow:var(--shadow-inner);
  transition:transform var(--ease),border-color var(--ease);
}
.check-card::before{
  content:"";position:absolute;left:24px;right:24px;top:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),transparent);
}
.check-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.check-card h3{margin-top:16px;font-size:19px}
.check-card ul{margin-top:14px;display:grid;gap:10px}
.check-card li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2)}
.check-card li::before{
  content:"";position:absolute;left:0;top:11px;
  width:7px;height:7px;border-radius:50%;border:1.5px solid var(--brand);
}
.check-index{font-family:var(--font-num);font-size:13px;color:var(--accent);letter-spacing:.12em}

/* FAQ */
.faq{max-width:880px;margin:0 auto}
.faq details{border-bottom:1px solid var(--line);border-radius:14px;transition:background var(--ease),border-color var(--ease)}
.faq details[open]{
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b));
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  margin:14px 0;
}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:44px;padding:20px 4px;font-size:17px;font-weight:600;color:var(--text-1);
  cursor:pointer;list-style:none;
}
.faq details[open] summary{padding-left:20px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";flex-shrink:0;width:9px;height:9px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform var(--ease);
}
.faq details[open] summary::after{transform:rotate(-135deg)}
.faq-answer{padding:0 4px 22px;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq details[open] .faq-answer{padding-left:20px;padding-right:24px}

/* 联系与反馈 */
.contact-grid{display:grid;grid-template-columns:6fr 6fr;gap:24px;align-items:start}
.form-card{
  padding:30px;
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b)),var(--bg-2);
  box-shadow:var(--shadow-card),var(--shadow-inner);
}
.form-card h3{font-size:22px}
.form-card > p{margin-top:10px;font-size:14px;color:var(--text-3)}
.form-grid{display:grid;gap:18px;margin-top:24px}
.field{display:grid;gap:8px}
.field label{font-size:14px;color:var(--text-2)}
.field input,.field textarea{
  width:100%;padding:13px 16px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(6,11,22,.6);
  color:var(--text-1);font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.field textarea{min-height:120px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#5A6A80}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:rgba(6,11,22,.85);
  box-shadow:0 0 0 4px rgba(31,227,192,.16);
}
.form-tip{font-size:13px;color:var(--brand);min-height:22px}
.info-card{
  padding:30px;
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b)),var(--bg-1);
  box-shadow:var(--shadow-inner);
}
.info-card h3{font-size:22px}
.info-list{margin-top:22px;display:grid;gap:16px}
.info-list li{display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:start}
.info-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line-strong);background:var(--brand-soft);
  color:var(--brand);font-family:var(--font-num);font-size:14px;
}
.info-list strong{display:block;font-size:15px;color:var(--text-1)}
.info-list span{font-size:14px;color:var(--text-2)}
.info-list a{color:var(--link);transition:color var(--ease)}
.info-list a:hover{color:var(--brand)}
.info-note{
  margin-top:22px;padding:16px 18px;
  border-radius:var(--radius-sm);border:1px dashed var(--line-strong);
  background:rgba(31,227,192,.05);font-size:13.5px;color:var(--text-2);
}

/* CTA 条 */
.cta-band{
  position:relative;overflow:hidden;
  padding:52px 40px;border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:linear-gradient(135deg,rgba(31,227,192,.14),rgba(255,106,43,.06)),var(--bg-2);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  box-shadow:var(--shadow-card);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-40px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,227,192,.22),transparent 68%);
}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);position:relative;z-index:1}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--text-2);max-width:640px;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}

/* 页脚 */
.site-footer{
  position:relative;
  background:#040810;
  padding:72px 0 32px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--text-3);max-width:340px}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:18px;font-weight:600}
.footer-col ul{display:grid;gap:12px}
.footer-col li{font-size:14px;color:var(--text-3)}
.footer-col a{color:var(--text-2);transition:color var(--ease),transform var(--ease);display:inline-block}
.footer-col a:hover{color:var(--brand);transform:translateX(-2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:52px;padding-top:24px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* 响应式 */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero{padding:140px 0 72px}
  .entry-grid{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .nav-menu a{padding:0 10px;font-size:14px}
}
@media (max-width:900px){
  .site-header{top:10px;padding:0 12px}
  .nav-capsule{flex-wrap:wrap;border-radius:20px;padding:10px 12px;gap:12px}
  .nav-menu{display:none;order:4;width:100%;flex-direction:column;align-items:stretch;gap:4px;
    margin:10px 0 0;padding-top:10px;border-top:1px dashed var(--line)}
  .nav-capsule.is-open .nav-menu{display:flex}
  .nav-menu a{min-height:46px;padding:0 14px;border-radius:12px;font-size:15px}
  .nav-menu a.active::after{display:none}
  .nav-actions .btn-ghost{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:72px 0}
  .cta-band{padding:40px 26px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .timeline::before{display:none}
  .tl-item{grid-template-columns:1fr;gap:12px;padding:24px}
  .tl-num{justify-self:start}
  .check-grid{grid-template-columns:1fr}
  .hero{padding:126px 0 60px}
  .hero-cta .btn{flex:1 1 auto}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero h1{font-size:clamp(28px,7.4vw,36px)}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .trust-list{gap:12px}
  .form-card,.info-card,.hero-panel{padding:22px}
  .footer-grid{grid-template-columns:1fr}
  .entry-body{padding:20px}
  .panel-list li{flex-direction:column;align-items:flex-start;gap:4px}
}

/* roulang page: category2 */
:root{
  --bg-0:#060B16;
  --bg-1:#0A1120;
  --bg-2:#0E1728;
  --brand:#1FE3C0;
  --brand-deep:#0FA88E;
  --brand-soft:rgba(31,227,192,.14);
  --accent:#FF6A2B;
  --link:#5CA8FF;
  --text-1:#EAF1FA;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(31,227,192,.35);
  --glass-a:rgba(255,255,255,.06);
  --glass-b:rgba(255,255,255,.02);
  --shadow-card:0 18px 44px rgba(2,6,14,.55);
  --shadow-glow:0 0 0 1px rgba(31,227,192,.5), 0 10px 30px rgba(31,227,192,.28);
  --radius-card:18px;
  --radius-card-lg:22px;
  --radius-btn:12px;
  --radius-pill:999px;
  --font-cn:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num:"JetBrains Mono","Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,monospace;
  --ease:220ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text-2);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.25;font-weight:700;}
p{margin:0 0 1.4em;}
p:last-child{margin-bottom:0;}
button{font:inherit;color:inherit;cursor:pointer;}
strong{font-weight:700;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.container-narrow{width:100%;max-width:880px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:120;
  display:flex;
  justify-content:center;
  padding:0 16px;
}
.nav-capsule{
  width:min(1180px,100%);
  display:flex;
  align-items:center;
  gap:20px;
  padding:10px 14px 10px 18px;
  border-radius:var(--radius-pill);
  background:linear-gradient(120deg,var(--glass-a),var(--glass-b));
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--shadow-card);
  transition:background var(--ease),box-shadow var(--ease),padding var(--ease);
}
.nav-capsule.is-scrolled{
  background:linear-gradient(120deg,rgba(10,17,32,.92),rgba(6,11,22,.88));
  box-shadow:0 22px 50px rgba(2,6,14,.72);
  padding:7px 14px 7px 18px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#03110E;font-family:var(--font-num);font-weight:700;font-size:18px;
  box-shadow:0 0 0 1px rgba(31,227,192,.45),0 8px 22px rgba(31,227,192,.22);
}
.brand-text strong{display:block;font-size:16px;line-height:1.2;color:var(--text-1);letter-spacing:.02em;}
.brand-text em{display:block;font-style:normal;font-size:10.5px;line-height:1.5;letter-spacing:.18em;color:var(--brand);}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-menu a{
  position:relative;
  display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--text-2);
  transition:color var(--ease),background var(--ease);
  white-space:nowrap;
}
.nav-menu a:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-menu a.active{color:var(--text-1);}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),rgba(31,227,192,0));
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:14px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  padding:0;place-items:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);margin:3px auto;transition:transform var(--ease),opacity var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}
.nav-drawer{
  position:fixed;inset:0;z-index:110;
  background:linear-gradient(180deg,rgba(6,11,22,.98),rgba(10,17,32,.99));
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  padding:110px 24px 40px;
  display:none;flex-direction:column;gap:6px;
}
.nav-drawer.is-open{display:flex;}
.nav-drawer a{
  display:flex;align-items:center;gap:14px;
  min-height:48px;padding:10px 16px;border-radius:14px;
  font-size:16px;color:var(--text-1);
  border:1px solid transparent;
}
.nav-drawer a small{font-family:var(--font-num);font-size:12px;color:var(--text-3);}
.nav-drawer a:hover,.nav-drawer a.active{background:var(--brand-soft);border-color:var(--line-strong);color:var(--brand);}
.nav-drawer .drawer-actions{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.nav-drawer .btn{width:100%;justify-content:center;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
  min-height:44px;
}
.btn-primary{
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  color:#03110E;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(31,227,192,.6),0 16px 38px rgba(31,227,192,.36);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,227,192,.45),0 6px 16px rgba(31,227,192,.22);}
.btn-ghost{
  background:linear-gradient(120deg,var(--glass-a),var(--glass-b));
  border-color:var(--line);color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-outline-accent{background:transparent;border-color:rgba(255,106,43,.42);color:#FF9A6B;}
.btn-outline-accent:hover{background:rgba(255,106,43,.12);border-color:var(--accent);}
.btn-sm{padding:9px 16px;font-size:13px;min-height:38px;border-radius:10px;}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12px;letter-spacing:.04em;
  background:var(--brand-soft);color:var(--brand);
  border:1px solid rgba(31,227,192,.28);
}
.badge-accent{background:rgba(255,106,43,.13);color:#FF9A6B;border-color:rgba(255,106,43,.3);}
.badge-muted{background:rgba(255,255,255,.05);color:var(--text-3);border-color:var(--line);}

/* ============ 通用板块 ============ */
.section{position:relative;padding:96px 0;}
.section-alt{background:var(--bg-1);}
.section-line::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,227,192,.5),transparent);
}
.section-head{margin-bottom:36px;max-width:760px;}
.section-head h2{font-size:clamp(24px,2.6vw,38px);letter-spacing:-.01em;}
.section-head .sub{margin-top:12px;font-size:14px;color:var(--text-3);line-height:1.9;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-num);font-size:12px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--brand);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px;}
.lede{font-size:16px;line-height:1.9;color:var(--text-2);}

/* 装饰斜纹 */
.stripe-deco{
  position:absolute;pointer-events:none;
  width:420px;height:420px;top:-60px;right:-120px;
  background-image:repeating-linear-gradient(45deg,rgba(31,227,192,.05) 0 2px,transparent 2px 14px);
  -webkit-mask-image:radial-gradient(circle at 60% 40%,#000 10%,transparent 72%);
  mask-image:radial-gradient(circle at 60% 40%,#000 10%,transparent 72%);
  z-index:0;
}
.stripe-deco.left{left:-140px;right:auto;top:auto;bottom:-80px;}

/* ============ 内页 Hero ============ */
.page-hero{
  position:relative;
  padding:150px 0 84px;
  overflow:hidden;
  background:
    radial-gradient(900px 420px at 78% 12%,rgba(31,227,192,.13),transparent 62%),
    linear-gradient(180deg,var(--bg-0),var(--bg-1));
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;}
.breadcrumb a{color:var(--text-3);transition:color var(--ease);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:rgba(255,255,255,.18);}
.hero-copy h1{
  font-size:clamp(32px,4.4vw,52px);
  font-weight:800;letter-spacing:-.02em;line-height:1.2;
  margin:18px 0 20px;
}
.hero-copy .lede{max-width:560px;font-size:16.5px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-note{font-size:12px;color:var(--text-3);margin-top:14px;}
.trust-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.trust-row li{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--radius-pill);
  font-size:13px;color:var(--text-2);
  background:linear-gradient(120deg,var(--glass-a),var(--glass-b));
  border:1px solid var(--line);
}
.trust-row li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px rgba(31,227,192,.7);}
.hero-panel{
  border-radius:var(--radius-card-lg);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b));
  border:1px solid var(--line);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  padding:26px;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.hero-panel h2{font-size:16px;letter-spacing:.02em;}
.hero-panel .panel-sub{font-size:13px;color:var(--text-3);margin-top:8px;}
.status-list{margin-top:20px;border-top:1px solid var(--line);}
.status-list li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 0;border-bottom:1px solid var(--line);font-size:14px;
}
.status-list li:last-child{border-bottom:0;}
.status-list .name{color:var(--text-1);font-weight:600;}
.status-list .state{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:var(--brand);}
.status-list .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(31,227,192,.8);}

/* ============ 数据条 ============ */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:var(--radius-card-lg);
  background:linear-gradient(120deg,var(--glass-a),var(--glass-b));
  overflow:hidden;
  margin-top:56px;
}
.stat{padding:28px 26px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:clamp(30px,3.2vw,44px);font-weight:700;color:var(--text-1);line-height:1.1;}
.stat .num em{font-style:normal;font-size:16px;color:var(--brand);margin-left:4px;}
.stat .label{margin-top:10px;font-size:13px;color:var(--text-3);}

/* ============ 筛选条 ============ */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  padding:10px;border-radius:var(--radius-pill);
  background:linear-gradient(120deg,var(--glass-a),var(--glass-b));
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  box-shadow:var(--shadow-card);
  margin-bottom:40px;
}
.filter-chip{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:10px 20px;border-radius:var(--radius-pill);
  font-size:14px;background:transparent;border:1px solid transparent;color:var(--text-2);
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.filter-chip:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.filter-chip.is-active{
  background:var(--brand-soft);color:var(--brand);
  border-color:rgba(31,227,192,.35);
  box-shadow:0 0 0 1px rgba(31,227,192,.22);
}
.filter-hint{margin-left:auto;padding-right:16px;font-size:12.5px;color:var(--text-3);}

/* ============ 模块卡片（两列错落） ============ */
.module-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.module-card{
  position:relative;
  border-radius:var(--radius-card);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b));
  border:1px solid var(--line);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  padding:26px;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.module-grid .module-card:nth-child(even){margin-top:48px;}
.module-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:0 0 0 1px rgba(31,227,192,.35),0 18px 44px rgba(2,6,14,.6);
}
.card-media{
  aspect-ratio:16/10;border-radius:14px;overflow:hidden;
  border:1px solid var(--line);margin-bottom:22px;position:relative;
  background:var(--bg-2);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.4,0,.2,1);}
.module-card:hover .card-media img{transform:scale(1.04);}
.card-top{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap;}
.module-card h3{font-size:20px;margin-bottom:10px;}
.module-card .desc{font-size:14.5px;line-height:1.85;color:var(--text-2);margin-bottom:16px;}
.check-list li{
  position:relative;padding-left:22px;font-size:14px;color:var(--text-2);margin-bottom:9px;line-height:1.75;
}
.check-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;
  background:var(--brand);opacity:.85;transform:rotate(45deg);border-radius:1px;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  margin-top:22px;padding-top:18px;border-top:1px solid var(--line);
}
.card-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand);transition:gap var(--ease),color var(--ease);}
.card-link:hover{gap:12px;color:#5BF3D6;}
.card-link .arrow{transition:transform var(--ease);}
.module-card:hover .card-link .arrow{transform:translateX(3px);}
.card-meta{font-size:12.5px;color:var(--text-3);font-family:var(--font-num);}

/* ============ 场景 / 三列卡 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  position:relative;
  padding:28px 24px 26px;
  border-radius:var(--radius-card);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b));
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
  overflow:hidden;
}
.scene-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,rgba(31,227,192,.85),rgba(31,227,192,0));
}
.scene-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(31,227,192,.28),0 18px 44px rgba(2,6,14,.6);}
.scene-card .idx{font-family:var(--font-num);font-size:13px;letter-spacing:.18em;color:var(--brand);}
.scene-card h3{font-size:19px;margin:12px 0 10px;}
.scene-card p{font-size:14.5px;line-height:1.85;margin-bottom:0;}

/* ============ 流程步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  position:relative;
  padding:26px 22px;
  border-radius:var(--radius-card);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b));
  border:1px solid var(--line);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.step:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:0 0 0 1px rgba(31,227,192,.25),0 16px 38px rgba(2,6,14,.55);}
.step .no{
  font-family:var(--font-num);font-size:26px;font-weight:700;
  color:var(--brand);letter-spacing:.02em;line-height:1;
}
.step h3{font-size:18px;margin:16px 0 10px;}
.step p{font-size:14px;line-height:1.85;margin-bottom:0;color:var(--text-2);}
.step-line{
  position:absolute;left:0;right:0;top:64px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,227,192,.28),transparent);
}

/* ============ FAQ ============ */
.faq{max-width:880px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);transition:background var(--ease),border-color var(--ease);}
.faq-item.is-open{
  background:linear-gradient(120deg,var(--glass-a),var(--glass-b));
  border-left:3px solid var(--brand);
  border-radius:0 14px 14px 0;
  padding-left:20px;
}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 18px 22px 0;background:none;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text-1);line-height:1.6;
}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-2);font-size:13px;
  transition:transform 200ms ease,border-color var(--ease),color var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);border-color:var(--line-strong);color:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms ease;font-size:15px;line-height:1.85;color:var(--text-2);}
.faq-a p{padding-right:40px;margin-bottom:0;}
.faq-item.is-open .faq-a{max-height:420px;padding-bottom:22px;}

/* ============ CTA 条 ============ */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:44px 46px;border-radius:var(--radius-card-lg);
  background:linear-gradient(120deg,rgba(31,227,192,.12),rgba(255,255,255,.03));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:auto -60px -120px auto;width:300px;height:300px;
  background-image:repeating-linear-gradient(45deg,rgba(31,227,192,.08) 0 2px,transparent 2px 14px);
  -webkit-mask-image:radial-gradient(circle,#000,transparent 70%);
  mask-image:radial-gradient(circle,#000,transparent 70%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.4vw,32px);margin-bottom:12px;}
.cta-band p{font-size:15px;margin-bottom:0;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;}

/* ============ 提示框 ============ */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  padding:22px 24px;border-radius:var(--radius-card);
  background:linear-gradient(120deg,rgba(255,106,43,.08),rgba(255,255,255,.02));
  border:1px solid rgba(255,106,43,.26);
  margin-top:40px;
}
.notice .mark{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;font-family:var(--font-num);font-weight:700;
  color:#FF9A6B;background:rgba(255,106,43,.14);border:1px solid rgba(255,106,43,.3);
}
.notice h3{font-size:16px;margin-bottom:8px;}
.notice p{font-size:14px;margin-bottom:0;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:#040810;
  padding:72px 0 32px;
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,227,192,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.9;color:var(--text-3);max-width:340px;}
.footer-col h4{font-size:15px;margin-bottom:18px;letter-spacing:.02em;}
.footer-col li{margin-bottom:11px;font-size:14px;color:var(--text-3);line-height:1.75;}
.footer-col a{color:var(--text-2);display:inline-block;transition:color var(--ease),transform var(--ease);}
.footer-col a:hover{color:var(--brand);transform:translateX(-2px);}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero-grid{gap:36px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .page-hero{padding:134px 0 68px;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-copy .lede{max-width:none;}
  .module-grid{gap:22px;}
  .module-grid .module-card:nth-child(even){margin-top:0;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step-line{display:none;}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:899px){
  .nav-menu,.nav-actions{display:none;}
  .nav-toggle{display:grid;margin-left:auto;}
  .nav-capsule{justify-content:space-between;}
  .nav-drawer{display:none;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .page-hero{padding:118px 0 56px;}
  .module-grid{grid-template-columns:1fr;}
  .grid-3{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .filter-bar{border-radius:22px;padding:12px;}
  .filter-hint{display:none;}
  .cta-band{padding:32px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .hero-cta .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .faq-item.is-open{padding-left:14px;}
  .faq-a p{padding-right:0;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  body{font-size:15.5px;}
  .page-hero{padding:110px 0 48px;}
  .hero-copy h1{font-size:clamp(28px,8vw,36px);}
  .steps{grid-template-columns:1fr;}
  .brand-text em{letter-spacing:.12em;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .trust-row li{font-size:12.5px;}
}

/* roulang page: category3 */
/* ============ 设计令牌 ============ */
:root{
  --bg-0:#060B16;
  --bg-1:#0A1120;
  --bg-2:#0E1728;
  --glass-1:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.02);
  --brand:#1FE3C0;
  --brand-deep:#0FA88E;
  --brand-soft:rgba(31,227,192,.14);
  --accent:#FF6A2B;
  --link:#5CA8FF;
  --text-1:#EAF1FA;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(31,227,192,.35);
  --shadow-card:0 18px 44px rgba(2,6,14,.55);
  --glow:0 0 0 1px rgba(31,227,192,.5), 0 10px 30px rgba(31,227,192,.28);
  --radius-lg:22px;
  --radius:18px;
  --radius-sm:12px;
  --pill:999px;
  --container:1200px;
  --narrow:820px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"Barlow Semi Condensed","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --t:220ms ease;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--link);text-decoration:none;transition:color var(--t),opacity var(--t);}
a:hover{color:var(--brand);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.28;font-weight:700;}
p{margin:0 0 1.4em;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

/* ============ 通用容器与板块 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.container-narrow{max-width:var(--narrow);}
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-1);}
.section-line{
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,227,192,.45),transparent);
  border:0;
  margin:0;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--brand);
  background:var(--brand-soft);
  border:1px solid rgba(31,227,192,.28);
  border-radius:var(--pill);
  padding:6px 14px;
  margin-bottom:18px;
}
.section-head{max-width:720px;margin-bottom:40px;}
.section-head h2{font-size:clamp(24px,2.6vw,38px);font-weight:700;letter-spacing:-.01em;}
.section-head .sub{
  font-size:14px;
  color:var(--text-3);
  margin-top:10px;
  line-height:1.7;
}
.stripe{
  position:absolute;
  inset:auto 0 0 auto;
  width:340px;
  height:340px;
  background:repeating-linear-gradient(45deg,rgba(31,227,192,.06) 0 2px,transparent 2px 14px);
  pointer-events:none;
  -webkit-mask-image:radial-gradient(circle at 100% 100%,#000 0,transparent 72%);
  mask-image:radial-gradient(circle at 100% 100%,#000 0,transparent 72%);
  z-index:0;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 22px;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  cursor:pointer;
  transition:transform var(--t),background var(--t),border-color var(--t),color var(--t),box-shadow var(--t),opacity var(--t);
  white-space:nowrap;
}
.btn-sm{min-height:38px;padding:9px 16px;font-size:13px;}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,#14C6A8 100%);
  color:#03211C;
  box-shadow:var(--glow);
}
.btn-primary:hover{
  background:linear-gradient(135deg,#3CEBCB 0%,var(--brand-deep) 100%);
  color:#03211C;
  transform:translateY(-2px);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(31,227,192,.4),0 6px 16px rgba(31,227,192,.22);}
.btn-ghost{
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  border-color:var(--line);
  color:var(--text-1);
}
.btn-ghost:hover{border-color:var(--line-strong);color:var(--brand);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-outline-accent{
  background:transparent;
  border-color:rgba(255,106,43,.5);
  color:#FFB48C;
}
.btn-outline-accent:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:120;
  display:flex;
  justify-content:center;
  pointer-events:none;
}
.nav-capsule{
  pointer-events:auto;
  width:min(1180px,calc(100% - 32px));
  display:flex;
  align-items:center;
  gap:18px;
  padding:10px 12px 10px 18px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  background-color:rgba(8,14,26,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 12px 32px rgba(2,6,14,.5),inset 0 1px 0 rgba(255,255,255,.06);
  transition:background-color var(--t),box-shadow var(--t),padding var(--t);
}
.site-header.is-scrolled .nav-capsule{
  background-color:rgba(6,11,22,.92);
  box-shadow:0 18px 44px rgba(2,6,14,.7),inset 0 1px 0 rgba(255,255,255,.06);
  padding-top:7px;
  padding-bottom:7px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text-1);
  flex:0 0 auto;
}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:36px;
  height:36px;
  border-radius:11px;
  display:grid;
  place-items:center;
  font-family:var(--mono);
  font-weight:700;
  font-size:18px;
  color:#03211C;
  background:linear-gradient(135deg,var(--brand),#0FB79A);
  box-shadow:0 0 0 1px rgba(31,227,192,.45),0 8px 20px rgba(31,227,192,.24);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-3);letter-spacing:.14em;}
.nav-menu{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
  flex-wrap:nowrap;
}
.nav-menu li a{
  display:inline-flex;
  align-items:center;
  padding:9px 14px;
  border-radius:var(--pill);
  font-size:14px;
  color:var(--text-2);
  position:relative;
  transition:color var(--t),background var(--t);
}
.nav-menu li a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t);
}
.nav-menu li a:hover{color:var(--text-1);background:rgba(255,255,255,.05);}
.nav-menu li a:hover::after,
.nav-menu li a.active::after{transform:scaleX(1);}
.nav-menu li a.active{color:var(--brand);background:var(--brand-soft);}
.nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  flex:0 0 auto;
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--text-1);
  transition:transform var(--t),opacity var(--t);
}
.site-header.nav-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.site-header.nav-open .nav-toggle span:nth-child(2){opacity:0;}
.site-header.nav-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ============ 页面头部 ============ */
.page-head{
  position:relative;
  padding:168px 0 88px;
  background:
    radial-gradient(900px 460px at 78% 8%,rgba(31,227,192,.12),transparent 62%),
    linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 100%);
  overflow:hidden;
}
.page-head::after{
  content:"";
  position:absolute;
  right:-60px;
  top:40px;
  width:420px;
  height:420px;
  background:repeating-linear-gradient(45deg,rgba(31,227,192,.055) 0 2px,transparent 2px 15px);
  -webkit-mask-image:radial-gradient(circle at 70% 30%,#000 0,transparent 70%);
  mask-image:radial-gradient(circle at 70% 30%,#000 0,transparent 70%);
  pointer-events:none;
}
.breadcrumb{position:relative;z-index:1;margin-bottom:26px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--text-3);opacity:.6;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb [aria-current]{color:var(--brand);}
.page-head h1{
  position:relative;
  z-index:1;
  font-size:clamp(32px,4.6vw,52px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.2;
  max-width:900px;
}
.lede{
  position:relative;
  z-index:1;
  max-width:620px;
  margin-top:24px;
  font-size:16px;
  color:var(--text-2);
  line-height:1.9;
}
.head-tags{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:28px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--text-2);
  padding:7px 14px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
}
.tag b{color:var(--brand);font-family:var(--mono);font-weight:600;}
.tag-accent{border-color:rgba(255,106,43,.4);color:#FFB48C;}

/* ============ 清单三栏卡 ============ */
.checklist-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.check-card{
  position:relative;
  display:flex;
  flex-direction:column;
  padding:28px 26px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  background-color:var(--bg-2);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.check-card::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--brand),rgba(31,227,192,0));
}
.check-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-strong);
  box-shadow:var(--shadow-card),0 0 0 1px rgba(31,227,192,.24),0 16px 40px rgba(31,227,192,.14);
}
.check-card__num{
  font-family:var(--mono);
  font-size:40px;
  line-height:1;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  color:rgba(31,227,192,.3);
  letter-spacing:.02em;
}
.check-card__badge{
  position:absolute;
  top:24px;
  right:22px;
  font-size:12px;
  font-family:var(--mono);
  color:#FFB48C;
  border:1px solid rgba(255,106,43,.38);
  border-radius:var(--pill);
  padding:3px 10px;
}
.check-card h3{
  font-size:21px;
  font-weight:600;
  margin:16px 0 6px;
}
.check-card .card-sub{
  font-size:13px;
  color:var(--text-3);
  margin:0 0 18px;
}
.check-list{display:flex;flex-direction:column;gap:12px;margin-bottom:24px;}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
}
.check-list li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.62em;
  width:12px;
  height:7px;
  border-left:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  transform:rotate(-45deg);
}
.card-link{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
}
.card-link .arrow{transition:transform var(--t);}
.card-link:hover .arrow{transform:translateX(4px);}

/* ============ 图文提醒板块 ============ */
.split{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:32px;
  align-items:center;
}
.figure-card{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:16/10;
  background:var(--bg-2);
}
.figure-card img{width:100%;height:100%;object-fit:cover;}
.figure-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,11,22,.05) 30%,rgba(6,11,22,.72) 100%);
}
.figure-card .fig-cap{
  position:absolute;
  left:22px;
  right:22px;
  bottom:20px;
  z-index:1;
  font-size:13px;
  color:var(--text-2);
}
.figure-card .fig-cap strong{display:block;color:var(--text-1);font-size:15px;margin-bottom:4px;}
.note-list{display:flex;flex-direction:column;gap:18px;margin-top:28px;}
.note-item{
  display:flex;
  gap:16px;
  padding:20px 22px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  background-color:var(--bg-2);
  transition:transform var(--t),border-color var(--t);
}
.note-item:hover{transform:translateY(-4px);border-color:var(--line-strong);}
.note-item .n-idx{
  font-family:var(--mono);
  font-size:15px;
  font-weight:700;
  color:var(--brand);
  border:1px solid rgba(31,227,192,.35);
  border-radius:10px;
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  flex:0 0 auto;
}
.note-item h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.note-item p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.8;}

/* ============ 数据条 ============ */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  background-color:var(--bg-2);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
}
.stat{
  padding:30px 24px;
  border-right:1px solid var(--line);
  text-align:left;
}
.stat:last-child{border-right:0;}
.stat .num{
  font-family:var(--mono);
  font-size:44px;
  font-weight:700;
  line-height:1;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.stat .num span{font-size:20px;color:var(--text-3);margin-left:4px;}
.stat .label{margin-top:10px;font-size:13px;color:var(--text-3);line-height:1.6;}

/* ============ 横向 CTA 条 ============ */
.cta-bar{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:34px 36px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(600px 220px at 12% 0%,rgba(31,227,192,.16),transparent 65%),
    linear-gradient(180deg,var(--glass-1),var(--glass-2));
  background-color:var(--bg-2);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  overflow:hidden;
}
.cta-bar::before{
  content:"";
  position:absolute;
  right:-40px;
  top:-40px;
  width:260px;
  height:260px;
  background:repeating-linear-gradient(45deg,rgba(31,227,192,.07) 0 2px,transparent 2px 14px);
  -webkit-mask-image:radial-gradient(circle at 80% 20%,#000 0,transparent 70%);
  mask-image:radial-gradient(circle at 80% 20%,#000 0,transparent 70%);
}
.cta-bar h2{font-size:clamp(20px,2.2vw,28px);font-weight:700;position:relative;}
.cta-bar p{position:relative;font-size:14.5px;color:var(--text-2);margin:8px 0 0;max-width:520px;}
.cta-actions{display:flex;gap:12px;flex:0 0 auto;position:relative;}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-list{display:flex;flex-direction:column;gap:0;}
.faq-item{
  border-bottom:1px solid var(--line);
  border-radius:14px;
  transition:background var(--t),border-color var(--t),padding var(--t);
}
.faq-item.is-open{
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  background-color:var(--bg-2);
  border-bottom-color:transparent;
  padding:4px 20px 6px;
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  position:relative;
}
.faq-item.is-open::before{
  content:"";
  position:absolute;
  left:0;
  top:14px;
  bottom:14px;
  width:3px;
  border-radius:3px;
  background:var(--brand);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 4px;
  min-height:48px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text-1);
  transition:color var(--t);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:0 0 auto;
  width:10px;
  height:10px;
  border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  transform:rotate(45deg);
  transition:transform 200ms ease;
  margin-right:6px;
}
.faq-item.is-open .faq-icon{transform:rotate(-135deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 320ms ease;
}
.faq-a p{
  padding:0 4px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
  margin:0;
}

/* ============ 联系 / 反馈 ============ */
.contact-grid{
  display:grid;
  grid-template-columns:6fr 6fr;
  gap:28px;
  align-items:start;
}
.info-card{
  padding:28px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  background-color:var(--bg-2);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
}
.info-row{
  display:flex;
  gap:14px;
  padding:16px 0;
  border-bottom:1px dashed var(--line);
}
.info-row:last-child{border-bottom:0;padding-bottom:0;}
.info-row .i-ico{
  width:40px;height:40px;flex:0 0 auto;
  border-radius:12px;
  display:grid;place-items:center;
  background:var(--brand-soft);
  border:1px solid rgba(31,227,192,.3);
  color:var(--brand);
}
.info-row h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:4px;}
.info-row p{font-size:14px;color:var(--text-2);margin:0;line-height:1.7;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px;}
.field input,.field textarea,.field select{
  width:100%;
  padding:13px 15px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text-1);
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field textarea{min-height:120px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;
  border-color:var(--brand);
  background:rgba(31,227,192,.05);
  box-shadow:0 0 0 4px rgba(31,227,192,.14);
}
.form-hint{font-size:12.5px;color:var(--text-3);margin-top:10px;}
.form .btn{width:100%;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:#04080F;
  border-top:1px solid transparent;
  padding:72px 0 28px;
  color:var(--text-2);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,227,192,.45),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.85;margin:18px 0 0;max-width:340px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col li{font-size:14px;color:var(--text-3);line-height:1.7;}
.footer-col a{color:var(--text-2);font-size:14px;display:inline-block;transition:color var(--t),transform var(--t);}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 20px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .page-head{padding:150px 0 72px;}
  .checklist-grid{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:28px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat{border-bottom:1px solid var(--line);}
  .stat:nth-child(2n){border-right:0;}
  .stat:nth-child(n+3){border-bottom:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .contact-grid{grid-template-columns:1fr;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:30px 28px;}
  .cta-actions{width:100%;flex-wrap:wrap;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .nav-menu{
    position:fixed;
    top:78px;
    left:16px;
    right:16px;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:10px;
    border-radius:22px;
    border:1px solid var(--line);
    background-color:rgba(8,14,26,.97);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    backdrop-filter:blur(18px) saturate(140%);
    box-shadow:0 24px 60px rgba(2,6,14,.7);
    max-height:calc(100vh - 240px);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    pointer-events:none;
    transition:opacity var(--t),transform var(--t),visibility var(--t);
    counter-reset:navitem;
  }
  .nav-menu li a{
    min-height:48px;
    border-radius:14px;
    font-size:15px;
    padding:0 14px;
    width:100%;
  }
  .nav-menu li a::after{display:none;}
  .nav-menu li a::before{
    counter-increment:navitem;
    content:"0" counter(navitem);
    font-family:var(--mono);
    font-size:11px;
    color:var(--text-3);
    margin-right:12px;
    letter-spacing:.08em;
  }
  .nav-actions{
    position:fixed;
    left:16px;
    right:16px;
    bottom:20px;
    display:flex;
    gap:10px;
    opacity:0;
    visibility:hidden;
    transform:translateY(10px);
    pointer-events:none;
    transition:opacity var(--t),transform var(--t),visibility var(--t);
    z-index:121;
  }
  .nav-actions .btn{flex:1;}
  .site-header.nav-open .nav-menu,
  .site-header.nav-open .nav-actions{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
    pointer-events:auto;
  }
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .page-head{padding:132px 0 56px;}
  .container{padding:0 16px;}
  .lede{max-width:100%;}
  .checklist-grid{grid-template-columns:1fr;gap:16px;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding:22px 20px;}
  .stat:nth-child(n+3){border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn{width:100%;}
  .info-card{padding:22px;}
  .note-item{padding:18px;gap:12px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .brand-text em{display:none;}
  .nav-capsule{padding:8px 10px 8px 12px;gap:10px;}
  .check-card{padding:22px 18px;}
  .check-card__num{font-size:34px;}
  .faq-q{font-size:16px;padding:18px 2px;}
  .faq-item.is-open{padding:4px 14px 6px;}
  .cta-bar{padding:24px 20px;}
  .stat .num{font-size:36px;}
}

/* roulang page: category4 */
:root{
  --bg-0:#060B16;
  --bg-1:#0A1120;
  --bg-2:#0E1728;
  --glass-1:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.02);
  --brand:#1FE3C0;
  --brand-deep:#0FA88E;
  --brand-soft:rgba(31,227,192,.14);
  --accent:#FF6A2B;
  --link:#5CA8FF;
  --text-1:#EAF1FA;
  --text-2:#A9B7CC;
  --text-3:#6C7C93;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(31,227,192,.35);
  --shadow-card:0 18px 44px rgba(2,6,14,.55);
  --glow:0 0 0 1px rgba(31,227,192,.5),0 10px 30px rgba(31,227,192,.28);
  --r-sm:12px;
  --r-md:18px;
  --r-lg:22px;
  --r-pill:999px;
  --w:1200px;
  --w-narrow:820px;
  --ease:220ms ease;
  --mono:"JetBrains Mono","Barlow Semi Condensed",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

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

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--bg-0);
  background-image:radial-gradient(1200px 600px at 78% -8%,rgba(31,227,192,.10),transparent 62%),
                   radial-gradient(900px 500px at 4% 12%,rgba(92,168,255,.08),transparent 60%);
  background-repeat:no-repeat;
  color:var(--text-2);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;}
a{color:var(--link);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--text-1);line-height:1.28;}
p{margin:0 0 1.25em;}
p:last-child{margin-bottom:0;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

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

.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-1);}
.section-line{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(31,227,192,.35),transparent);}

.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,2.6vw,38px);font-weight:700;letter-spacing:-.01em;}
.section-head .sub{margin-top:14px;font-size:14px;color:var(--text-3);line-height:1.9;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.06em;color:var(--brand);
  background:var(--brand-soft);border:1px solid var(--line-strong);
  padding:5px 14px;border-radius:var(--r-pill);margin-bottom:18px;font-weight:600;
}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:90;
  display:flex;justify-content:center;padding:0 16px;
}
.nav-capsule{
  position:relative;width:min(1180px,100%);
  display:flex;align-items:center;gap:20px;
  padding:10px 14px 10px 18px;
  border-radius:var(--r-pill);
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 10px 30px rgba(2,6,14,.35);
  transition:background var(--ease),box-shadow var(--ease),padding var(--ease);
}
.site-header.is-scrolled .nav-capsule{
  background:linear-gradient(180deg,rgba(10,17,32,.94),rgba(6,11,22,.9));
  box-shadow:var(--shadow-card);
  padding-top:8px;padding-bottom:8px;
}
.brand{display:inline-flex;align-items:center;gap:10px;position:relative;z-index:130;text-decoration:none;}
.brand-mark{
  width:36px;height:36px;flex:none;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04140F;font-weight:800;font-size:17px;
  box-shadow:0 8px 20px rgba(31,227,192,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{color:var(--text-1);font-size:15.5px;letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--text-3);letter-spacing:.14em;}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:8px;}
.nav-menu a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:var(--r-pill);font-size:14.5px;color:var(--text-2);
  transition:color var(--ease),background var(--ease);
}
.nav-menu a:hover,.nav-menu a:focus-visible{color:var(--text-1);background:var(--brand-soft);}
.nav-menu a.active{color:var(--brand);background:var(--brand-soft);font-weight:600;position:relative;}
.nav-menu a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,transparent,var(--brand),transparent);
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
  position:relative;z-index:130;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform var(--ease),opacity var(--ease);}
.nav-capsule.is-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-capsule.is-open .nav-toggle span:nth-child(2){opacity:0;}
.nav-capsule.is-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;text-decoration:none;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04140F;box-shadow:0 10px 30px rgba(31,227,192,.28);
}
.btn-primary:hover{color:#04140F;transform:translateY(-2px);box-shadow:var(--glow);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  border-color:var(--line);color:var(--text-1);
  background:rgba(255,255,255,.03);
}
.btn-ghost:hover{color:var(--text-1);border-color:var(--line-strong);background:var(--brand-soft);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:40px;padding:0 18px;font-size:13.5px;}
.btn-lg{height:54px;padding:0 30px;font-size:16px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}
.btn-note{font-size:12px;color:var(--text-3);margin-top:10px;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.03em;
  background:var(--brand-soft);color:var(--brand);border:1px solid var(--line-strong);
}
.badge-accent{background:rgba(255,106,43,.12);color:var(--accent);border-color:rgba(255,106,43,.32);}
.badge-plain{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line);}

.panel{
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
}

/* ---------- 页面头部 ---------- */
.page-hero{position:relative;overflow:hidden;padding:150px 0 68px;}
.page-hero::after{
  content:"";position:absolute;top:-60px;right:-90px;width:560px;height:360px;
  background:repeating-linear-gradient(45deg,rgba(31,227,192,.07) 0 3px,transparent 3px 20px);
  transform:rotate(-8deg);opacity:.55;pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:22px;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:rgba(255,255,255,.22);}
.page-hero h1{
  font-size:clamp(32px,4.6vw,56px);font-weight:800;letter-spacing:-.02em;
  line-height:1.2;max-width:20em;
}
.page-hero .lead{
  margin-top:22px;max-width:760px;font-size:16px;color:var(--text-2);
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}

/* ---------- 分栏问答 ---------- */
.split-layout{
  display:grid;grid-template-columns:260px minmax(0,1fr);
  gap:48px;align-items:start;
}
.toc-panel{position:sticky;top:118px;}
.toc-inner{padding:22px 20px;border-radius:var(--r-md);border:1px solid var(--line);background:linear-gradient(180deg,var(--glass-1),var(--glass-2));}
.toc-title{margin:0 0 14px;font-size:12.5px;letter-spacing:.14em;color:var(--text-3);}
.toc{display:flex;flex-direction:column;gap:2px;}
.toc a{
  display:block;padding:10px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;transition:all var(--ease);
}
.toc a:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.toc a.active{color:var(--brand);background:var(--brand-soft);border-left-color:var(--brand);font-weight:600;}
.toc-cta{margin-top:18px;width:100%;}

.qa-blocks{min-width:0;}
.qa-block{padding:34px 0;border-bottom:1px solid var(--line);}
.qa-block:first-child{padding-top:0;}
.qa-block:last-child{border-bottom:0;padding-bottom:0;}
.qa-block h3{
  font-size:21px;font-weight:600;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;
}
.qa-block h3 .num{
  font-family:var(--mono);font-size:14px;color:var(--brand);
  border:1px solid var(--line-strong);border-radius:8px;padding:1px 8px;
  font-variant-numeric:tabular-nums;letter-spacing:.04em;
}
.qa-block p{margin-top:14px;}
.qa-block .sub-note{
  margin-top:18px;padding:16px 18px;border-radius:var(--r-sm);
  border:1px solid var(--line);border-left:3px solid var(--brand);
  background:rgba(31,227,192,.06);font-size:14.5px;color:var(--text-2);
}
.check-list{margin-top:16px;display:flex;flex-direction:column;gap:10px;}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--text-2);}
.check-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:9px;height:9px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(31,227,192,.14);
}
.figure{margin:26px 0 0;}
.figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-md);border:1px solid var(--line);
  background:var(--bg-2);
}
.figure figcaption{margin-top:12px;font-size:13px;color:var(--text-3);}

/* ---------- 信息三卡 ---------- */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.info-card{
  position:relative;padding:28px 24px 24px;border-radius:var(--r-md);
  background:linear-gradient(180deg,var(--glass-1),var(--glass-2));
  border:1px solid var(--line);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.info-card::before{
  content:"";position:absolute;left:24px;right:24px;top:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),rgba(31,227,192,0));
}
.info-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--glow),var(--shadow-card);}
.info-card .idx{
  font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.1em;
  display:block;margin-bottom:12px;
}
.info-card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.info-card p{font-size:14.5px;color:var(--text-2);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);border-radius:0;transition:background var(--ease);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  text-align:left;padding:22px 18px;font-size:17px;font-weight:600;color:var(--text-1);
  transition:color var(--ease),background var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-q .arrow{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  font-size:12px;color:var(--text-2);
  transition:transform 200ms ease,color var(--ease),border-color var(--ease);
}
.faq-a{
  max-height:0;overflow:hidden;opacity:0;
  transition:max-height 260ms ease,opacity 220ms ease,padding 220ms ease;
  font-size:15px;color:var(--text-2);padding:0 18px;
}
.faq-item.is-open{background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-item.is-open .faq-q .arrow{transform:rotate(180deg);color:var(--brand);border-color:var(--line-strong);}
.faq-item.is-open .faq-a{max-height:420px;opacity:1;padding:0 18px 24px;border-left:3px solid var(--brand);}

/* ---------- CTA ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  padding:46px 44px;border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(31,227,192,.14),rgba(255,255,255,.02) 58%,rgba(92,168,255,.10));
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.08);
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;bottom:-70px;left:-40px;width:340px;height:200px;
  background:repeating-linear-gradient(45deg,rgba(31,227,192,.08) 0 3px,transparent 3px 18px);
  transform:rotate(-8deg);pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.2vw,30px);font-weight:700;position:relative;}
.cta-band p{margin-top:12px;max-width:620px;font-size:15px;position:relative;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#04080F;border-top:1px solid var(--line);
  padding:72px 0 28px;margin-top:0;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,227,192,.5),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
}
.footer-brand p{margin-top:18px;font-size:14px;color:var(--text-3);max-width:360px;}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14px;color:var(--text-3);}
.footer-col a{color:var(--text-3);transition:color var(--ease),transform var(--ease);display:inline-block;}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .nav-menu a{padding:0 11px;font-size:14px;}
}
@media (max-width:1023px){
  .section{padding:72px 0;}
  .split-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .toc-panel{position:static;}
  .toc-inner{padding:18px;}
  .toc{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;gap:8px;padding-bottom:6px;}
  .toc a{white-space:nowrap;border-left:0;border-bottom:2px solid transparent;border-radius:var(--r-pill);background:rgba(255,255,255,.03);}
  .toc a.active{border-left:0;border-bottom-color:var(--brand);}
  .toc-cta{margin-top:14px;}
  .info-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:899px){
  .nav-toggle{display:flex;}
  .nav-actions{display:none;}
  .nav-menu{
    position:fixed;inset:0;z-index:120;
    flex-direction:column;align-items:stretch;gap:4px;
    margin:0;padding:104px 24px 32px;
    background:rgba(6,11,22,.98);
    backdrop-filter:blur(16px);
    transform:translateY(-102%);opacity:0;pointer-events:none;
    transition:transform 280ms ease,opacity 220ms ease;
    overflow-y:auto;
  }
  .nav-capsule.is-open .nav-menu{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-menu li{border-bottom:1px solid var(--line);}
  .nav-menu a{height:56px;padding:0 6px;border-radius:0;font-size:16px;}
  .nav-menu a.active::after{left:6px;right:auto;width:22px;bottom:12px;}
  .brand-text strong{font-size:15px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .page-hero{padding:126px 0 48px;}
  .page-hero::after{width:360px;height:240px;opacity:.4;}
  .info-grid{grid-template-columns:minmax(0,1fr);}
  .qa-block h3{font-size:19px;}
  .cta-band{padding:32px 24px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:479px){
  .page-hero h1{font-size:clamp(27px,8vw,34px);}
  .btn{width:100%;}
  .hero-meta .badge{width:100%;justify-content:center;}
  .cta-actions{width:100%;}
  .brand-mark{width:32px;height:32px;font-size:15px;}
  .brand-text strong{font-size:14px;}
  .brand-text em{font-size:10.5px;letter-spacing:.1em;}
  .info-card{padding:22px 18px;}
  .faq-q{font-size:16px;padding:18px 12px;}
  .faq-a{padding-left:12px;padding-right:12px;}
  .faq-item.is-open .faq-a{padding-left:12px;padding-right:12px;}
}