/* roulang page: index */
/* ===================== 设计令牌 ===================== */
:root{
  --ink-900:#0A1411;
  --ink-800:#10201A;
  --ink-700:#16302A;
  --brand-500:#0FB98E;
  --brand-400:#22D6A3;
  --brand-600:#0A8F6C;
  --accent-500:#FF8A3D;
  --accent-400:#FFB25E;
  --neon:#2BF5C6;
  --bg:#F4F7F4;
  --surface:#FFFFFF;
  --surface-alt:#EDF4EF;
  --line:#DCE7E1;
  --text-900:#0F1B17;
  --text-700:#33463F;
  --text-500:#5F746C;
  --text-400:#8A9C95;
  --grad-brand:linear-gradient(135deg,#0FB98E 0%,#22D6A3 55%,#7CE8C4 100%);
  --grad-btn:linear-gradient(135deg,#0A8F6C 0%,#16C79A 58%,#3FD8AE 100%);
  --grad-accent:linear-gradient(120deg,#FF8A3D,#FFB25E);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --shadow-card:0 1px 0 rgba(15,27,23,.04),0 8px 24px -12px rgba(15,27,23,.18);
  --shadow-hover:0 18px 40px -18px rgba(10,143,108,.35);
  --ease:cubic-bezier(.2,.8,.2,1);
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
::selection{background:rgba(34,214,163,.28);color:var(--ink-900)}

/* ===================== 容器与版块 ===================== */
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:640px){.container{padding-left:24px;padding-right:24px}}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px}}
@media (min-width:1440px){.container{max-width:1280px}}

.section{padding:56px 0}
@media (min-width:640px){.section{padding:80px 0}}
@media (min-width:1024px){.section{padding:104px 0}}
.section-tight{padding:44px 0}
@media (min-width:1024px){.section-tight{padding:64px 0}}

.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px}
.section-title{font-size:clamp(24px,2.6vw,36px);line-height:1.28;font-weight:700;color:var(--text-900);letter-spacing:.01em}
.section-desc{margin-top:10px;font-size:15.5px;line-height:1.75;color:var(--text-500);max-width:60ch}
.on-dark .section-title{color:#fff}
.on-dark .section-desc{color:rgba(255,255,255,.72)}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.06em;
  color:#7CE8C4;background:rgba(43,245,198,.09);
  border:1px solid rgba(43,245,198,.28);
}
.eyebrow svg{width:16px;height:16px;stroke:var(--neon);fill:none;stroke-width:1.75}

/* ===================== 按钮 ===================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:13px 28px;border-radius:999px;
  font-size:16px;font-weight:700;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),filter .25s var(--ease);
}
.btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.75}
.btn-primary{background:var(--grad-btn);color:#fff;box-shadow:0 12px 28px -16px rgba(10,143,108,.9)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 38px -18px rgba(34,214,163,.85);filter:brightness(1.07)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-accent{background:var(--grad-accent);color:#3A1700;box-shadow:0 14px 30px -16px rgba(255,138,61,.95)}
.btn-accent:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 20px 40px -18px rgba(255,138,61,.95)}
.btn-accent:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost-dark{border-color:rgba(255,255,255,.28);color:#fff;background:rgba(255,255,255,.02)}
.btn-ghost-dark:hover{border-color:var(--neon);background:rgba(43,245,198,.08);transform:translateY(-2px)}
.btn-ghost-dark:active{transform:translateY(0)}
.btn-ghost{border-color:var(--line);color:var(--text-900);background:var(--surface)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:none;box-shadow:0 0 0 3px rgba(43,245,198,.45);
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;color:var(--brand-600);
}
.text-link span{transition:transform .22s var(--ease);display:inline-block}
.text-link:hover span{transform:translateX(3px)}
.text-link:hover{color:var(--brand-500)}

/* ===================== 顶栏导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,20,17,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(43,245,198,.14);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;letter-spacing:.01em;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(15,185,142,.24),rgba(43,245,198,.08));
  box-shadow:inset 0 0 0 1px rgba(43,245,198,.38);
}
.brand-mark svg{width:19px;height:19px;stroke:var(--neon);fill:none;stroke-width:1.75}
.brand:hover .brand-mark{box-shadow:inset 0 0 0 1px rgba(43,245,198,.7),0 0 18px -4px rgba(43,245,198,.6)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  border-radius:999px;font-size:15px;font-weight:600;color:rgba(255,255,255,.72);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--neon),#7CE8C4);
  transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(43,245,198,.07)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{
  color:#fff;background:rgba(43,245,198,.08);
  text-shadow:0 0 12px rgba(43,245,198,.55);
}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-cta{flex-shrink:0;min-height:42px;padding:9px 22px;font-size:14.5px}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(43,245,198,.28);background:rgba(43,245,198,.06);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-burger span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.nav-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer-mask{
  position:fixed;inset:0;background:rgba(4,10,8,.62);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:min(320px,84vw);padding:24px;
  background:var(--ink-900);
  border-left:1px solid rgba(43,245,198,.16);
  box-shadow:-24px 0 60px -30px rgba(0,0,0,.9);
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.18);color:#fff;font-size:20px;line-height:1}
.drawer-close:hover{border-color:var(--neon);color:var(--neon)}
.nav-drawer a{
  display:flex;align-items:center;min-height:48px;padding:0 16px;border-radius:12px;
  color:rgba(255,255,255,.78);font-size:16px;font-weight:600;
  border-left:3px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.nav-drawer a:hover{background:rgba(43,245,198,.08);color:#fff}
.nav-drawer a.is-active{background:rgba(43,245,198,.1);color:#fff;border-left-color:var(--neon)}
.nav-drawer .btn{margin-top:16px;width:100%}

@media (max-width:1023px){
  .nav-links,.nav-cta{display:none}
  .nav-burger{display:inline-flex}
  .nav-wrap{height:60px}
  .brand{font-size:14.5px}
}
@media (min-width:1024px){
  .nav-drawer,.drawer-mask{display:none}
}

/* ===================== Hero ===================== */
.hero{
  position:relative;overflow:hidden;
  padding:56px 0 64px;
  color:#fff;
  background:
    radial-gradient(1200px 600px at 18% -10%,rgba(43,245,198,.18),transparent 62%),
    radial-gradient(800px 500px at 92% 8%,rgba(255,138,61,.12),transparent 60%),
    linear-gradient(160deg,#0A1411 0%,#10201A 62%,#123128 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;opacity:.5;
  -webkit-mask-image:radial-gradient(760px 420px at 30% 0%,#000 0%,transparent 78%);
  mask-image:radial-gradient(760px 420px at 30% 0%,#000 0%,transparent 78%);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,245,198,.55),transparent);
}
.hero .container{position:relative;z-index:2}
@media (min-width:1024px){.hero{padding:84px 0 96px}}

.hero-copy{max-width:640px}
.hero h1{
  margin:22px 0 18px;
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.2;font-weight:800;letter-spacing:.01em;color:#fff;
}
.hero h1 .hl{color:#5CF0C6}
.hero-sub{
  font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.76);
  max-width:36em;
}
@media (min-width:1024px){.hero-sub{font-size:17px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.trust-list{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:28px}
.trust-list li{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;color:rgba(255,255,255,.74)}
.trust-list svg{width:18px;height:18px;stroke:var(--neon);fill:none;stroke-width:1.75;flex-shrink:0}

.hero-visual{position:relative;margin-top:36px}
@media (min-width:1024px){.hero-visual{margin-top:0}}
.hero-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 0 0 1px rgba(43,245,198,.18),0 34px 90px -46px rgba(43,245,198,.7);
  background:linear-gradient(150deg,#123128,#0A1411);
}
.hero-frame img{width:100%;aspect-ratio:4/3.2;object-fit:cover;border-radius:var(--r-lg)}
.float-badge{
  position:absolute;display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:999px;font-size:13px;font-weight:700;letter-spacing:.03em;
  white-space:nowrap;
}
.float-badge svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.75}
.float-badge.badge-neon{
  top:16px;left:16px;
  color:#7CE8C4;background:rgba(10,20,17,.82);
  border:1px solid rgba(43,245,198,.5);
  box-shadow:0 0 22px -6px rgba(43,245,198,.6);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.float-badge.badge-light{
  right:16px;bottom:16px;
  color:var(--ink-900);background:#fff;
  border:1px solid rgba(255,255,255,.9);
  box-shadow:0 16px 34px -18px rgba(0,0,0,.6);
}
@media (max-width:639px){
  .hero-badges-mobile{display:flex;gap:10px;overflow-x:auto;margin-top:14px;padding-bottom:4px;scrollbar-width:none}
  .hero-badges-mobile::-webkit-scrollbar{display:none}
  .hero-badges-mobile .float-badge{position:static;flex:0 0 auto}
  .hero-frame .float-badge{display:none}
}
@media (min-width:640px){
  .hero-badges-mobile{display:none}
}

/* ===================== 数据徽章带 ===================== */
.stats-band{background:var(--surface);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr)}
.stat{padding:26px 8px;text-align:center;border-bottom:1px solid var(--line)}
.stat:nth-child(odd){border-right:1px solid var(--line)}
.stat:nth-child(3),.stat:nth-child(4){border-bottom:none}
@media (min-width:768px){
  .stats-grid{grid-template-columns:repeat(4,1fr)}
  .stat{padding:34px 16px;border-bottom:none;border-right:1px solid var(--line)}
  .stat:nth-child(odd){border-right:1px solid var(--line)}
  .stat:last-child{border-right:none}
}
.stat-num{
  display:block;font-size:clamp(26px,3vw,38px);font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{display:block;margin-top:8px;font-size:13.5px;color:var(--text-500);letter-spacing:.02em}

/* ===================== 档位阶梯 ===================== */
.tier-grid{display:grid;grid-template-columns:1fr;gap:18px;align-items:end}
@media (min-width:640px){.tier-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (min-width:1024px){.tier-grid{grid-template-columns:repeat(4,1fr);gap:24px}}

.tier-card{
  position:relative;display:flex;flex-direction:column;gap:16px;
  padding:26px 24px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.tier-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(15,185,142,.4)}
@media (min-width:1024px){
  .tier-card{min-height:296px}
  .tier-card:nth-child(2){min-height:308px}
  .tier-card:nth-child(3){min-height:320px}
  .tier-card:nth-child(4){min-height:332px}
}
.tier-num{
  font-size:42px;font-weight:800;line-height:1;letter-spacing:.02em;
  color:transparent;-webkit-text-stroke:1.2px rgba(15,185,142,.55);
}
.tier-card h3{font-size:19px;font-weight:700;line-height:1.4;color:var(--text-900)}
.tier-list{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.tier-list li{position:relative;padding-left:18px;font-size:15px;line-height:1.65;color:var(--text-700)}
.tier-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:50%;
  background:var(--brand-400);box-shadow:0 0 0 3px rgba(34,214,163,.18);
}
.tier-card .text-link{margin-top:auto}
.tier-card.is-top{
  background:
    radial-gradient(500px 240px at 80% -30%,rgba(255,178,94,.35),transparent 62%),
    linear-gradient(150deg,#0FB98E 0%,#0A8F6C 68%,#0A6B52 100%);
  border-color:transparent;color:#fff;
  box-shadow:0 26px 60px -30px rgba(10,143,108,.75);
}
.tier-card.is-top h3{color:#fff}
.tier-card.is-top .tier-num{-webkit-text-stroke:1.2px rgba(255,255,255,.7)}
.tier-card.is-top .tier-list li{color:rgba(255,255,255,.92)}
.tier-card.is-top .tier-list li::before{background:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.24)}
.tier-card.is-top .text-link{color:#fff}
.tier-card.is-top:hover{box-shadow:0 32px 70px -30px rgba(10,143,108,.9)}
.tier-flag{
  position:absolute;top:14px;right:14px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.06em;
  color:#3A1700;background:var(--grad-accent);
  box-shadow:0 10px 22px -12px rgba(255,138,61,.9);
}

/* ===================== 套餐对比 ===================== */
.plan-rail{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 2px 16px;scrollbar-width:thin}
.plan-rail::-webkit-scrollbar{height:6px}
.plan-rail::-webkit-scrollbar-thumb{background:rgba(15,185,142,.35);border-radius:999px}
.plan-card{
  flex:0 0 84vw;scroll-snap-align:start;
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
@media (max-width:639px){.plan-card{flex-basis:84vw}}
@media (min-width:768px){
  .plan-rail{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;overflow:visible;padding-bottom:0}
  .plan-card{flex:none}
}
@media (min-width:1024px){
  .plan-rail{grid-template-columns:repeat(4,1fr);gap:24px}
}
.plan-name{font-size:15px;font-weight:700;letter-spacing:.08em;color:var(--brand-600)}
.plan-tier{margin-top:10px;display:flex;align-items:baseline;gap:6px}
.plan-tier b{
  font-size:40px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.plan-tier span{font-size:14px;color:var(--text-500)}
.plan-pos{margin-top:12px;font-size:15px;line-height:1.7;color:var(--text-700)}
.plan-divider{height:1px;background:var(--line);margin:20px 0}
.plan-feats{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.plan-feats li{display:flex;align-items:flex-start;gap:9px;font-size:14.5px;line-height:1.6;color:var(--text-700)}
.plan-feats svg{width:18px;height:18px;flex-shrink:0;margin-top:3px;fill:none;stroke-width:1.9}
.plan-feats .yes svg{stroke:var(--brand-500)}
.plan-feats .no{color:var(--text-400);opacity:.85}
.plan-feats .no svg{stroke:var(--text-400);opacity:.5}
.plan-card .btn{margin-top:auto;width:100%}
.plan-card.is-featured{
  position:relative;transform:translateY(-8px);
  border:2px solid transparent;
  background-image:linear-gradient(#fff,#fff),var(--grad-brand);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 28px 60px -32px rgba(10,143,108,.7);
}
.plan-card.is-featured:hover{transform:translateY(-12px)}
.plan-tag{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  padding:5px 16px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.08em;
  color:#3A1700;background:var(--grad-accent);white-space:nowrap;
  box-shadow:0 12px 24px -12px rgba(255,138,61,.9);
}
@media (max-width:767px){.plan-card.is-featured{transform:none}.plan-card.is-featured:hover{transform:translateY(-4px)}}

/* ===================== 限时入口 ===================== */
.flash-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  padding:32px 24px;
  color:#fff;
  background:
    radial-gradient(800px 400px at 10% -20%,rgba(43,245,198,.2),transparent 62%),
    linear-gradient(150deg,#0A1411 0%,#16302A 100%);
  box-shadow:inset 0 0 0 1px rgba(43,245,198,.18),0 34px 80px -44px rgba(43,245,198,.55);
  display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
}
@media (min-width:900px){.flash-card{grid-template-columns:1fr auto;padding:44px 44px;gap:36px}}
.flash-card h2{font-size:clamp(22px,2.4vw,32px);line-height:1.3;font-weight:700;color:#fff}
.flash-card p{margin-top:10px;font-size:15.5px;color:rgba(255,255,255,.72);max-width:46ch}
.flash-card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--brand-500),var(--neon),var(--accent-400));
  animation:breathe 3s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:.35}50%{opacity:1}}
.countdown{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}
.cd-block{
  width:56px;height:56px;border-radius:14px;
  background:rgba(6,14,11,.8);
  border:1px solid rgba(43,245,198,.35);
  box-shadow:inset 0 0 18px -8px rgba(43,245,198,.9);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.cd-num{font-size:20px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;color:#fff}
.cd-label{font-size:11px;line-height:1;margin-top:4px;color:rgba(255,255,255,.58)}
.flash-actions{display:flex;flex-direction:column;gap:12px}
.flash-actions .btn{width:100%}
@media (min-width:900px){.flash-actions .btn{width:auto}}
.flash-note{font-size:13px;color:rgba(255,255,255,.55);text-align:center}

/* ===================== 指引图文 ===================== */
.guide-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:center}
@media (min-width:900px){.guide-grid{grid-template-columns:1fr 1.05fr;gap:56px}}
.guide-figure{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-card);background:linear-gradient(150deg,#EDF4EF,#D9EDE4);
}
.guide-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg)}
.guide-steps{display:flex;flex-direction:column;gap:16px;margin-top:26px}
.guide-step{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;box-shadow:var(--shadow-card);
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.guide-step:hover{transform:translateX(4px);border-color:rgba(15,185,142,.4);box-shadow:var(--shadow-hover)}
.guide-step .step-ico{
  width:40px;height:40px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;
  background:rgba(15,185,142,.1);border:1px solid rgba(15,185,142,.22);
}
.guide-step .step-ico svg{width:20px;height:20px;stroke:var(--brand-600);fill:none;stroke-width:1.75}
.guide-step h3{font-size:17px;font-weight:700;line-height:1.45;color:var(--text-900)}
.guide-step p{margin-top:4px;font-size:15px;line-height:1.7;color:var(--text-500)}

/* ===================== 最新信息 ===================== */
.news-grid{margin-top:-12px}
.news-cell{margin-bottom:24px}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(15,185,142,.35)}
.news-media{display:block;overflow:hidden;background:linear-gradient(150deg,#DCE9E3,#BFE6D7)}
.news-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .3s var(--ease)}
.news-card:hover .news-media img{transform:scale(1.03)}
.news-body{display:flex;flex-direction:column;gap:12px;padding:20px 22px 22px;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  color:var(--brand-600);background:rgba(15,185,142,.1);
  border:1px solid rgba(15,185,142,.22);
}
.news-date{font-size:13px;color:var(--text-400);font-variant-numeric:tabular-nums}
.news-title{font-size:18px;line-height:1.5;font-weight:700;color:var(--text-900)}
.news-title a:hover{color:var(--brand-600)}
.news-excerpt{
  font-size:14.5px;line-height:1.75;color:var(--text-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card .text-link{margin-top:auto;padding-top:4px}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:220px;padding:36px 24px;text-align:center;
  background:var(--surface-alt);border:1px dashed var(--line);border-radius:var(--r-lg);
}
.empty-state svg{width:36px;height:36px;stroke:var(--brand-500);fill:none;stroke-width:1.6}
.empty-state p{font-size:15.5px;color:var(--text-500)}

/* ===================== FAQ ===================== */
.faq-grid{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width:900px){.faq-grid{grid-template-columns:repeat(2,1fr);gap:12px 24px}}
.accordion.faq-accordion{background:transparent;border:0;margin:0}
.faq-accordion .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.faq-accordion .accordion-item:hover{border-color:rgba(15,185,142,.3)}
.faq-accordion .accordion-item.is-active{
  border-color:rgba(15,185,142,.45);box-shadow:0 18px 40px -30px rgba(10,143,108,.6);
}
.faq-accordion .accordion-title{
  position:relative;display:block;
  padding:20px 60px 20px 24px;
  border:0;background:transparent;
  font-size:16.5px;font-weight:700;line-height:1.55;color:var(--text-900);
}
.faq-accordion .accordion-title:hover{color:var(--brand-600)}
.faq-accordion .accordion-title::before{
  content:"+";
  position:absolute;right:20px;top:50%;
  width:28px;height:28px;line-height:26px;
  margin:0;text-align:center;
  border:1px solid var(--line);border-radius:50%;
  background:transparent;color:var(--text-500);
  font-size:17px;font-weight:400;
  transform:translateY(-50%);
  transition:transform .28s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.faq-accordion .accordion-item.is-active .accordion-title::before{
  transform:translateY(-50%) rotate(45deg);
  color:var(--brand-600);border-color:rgba(15,185,142,.5);
}
.faq-accordion .accordion-content{
  border:0;padding:0 24px 22px;
  font-size:15.5px;line-height:1.8;color:var(--text-700);
  animation:fadeIn .28s var(--ease);
}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

/* ===================== 咨询表单 ===================== */
.contact-card{
  background:var(--surface-alt);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px 24px;
}
@media (min-width:1024px){.contact-card{padding:48px 44px}}
.contact-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.contact-grid{grid-template-columns:5fr 7fr;gap:52px}}
.contact-points{display:flex;flex-direction:column;gap:14px;margin-top:26px}
.contact-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text-700);line-height:1.7}
.contact-points svg{width:20px;height:20px;flex-shrink:0;margin-top:3px;stroke:var(--brand-600);fill:none;stroke-width:1.75}
.form-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:640px){.form-grid{grid-template-columns:repeat(2,1fr)}.form-field.full{grid-column:1/-1}}
.form-field label{display:block;margin-bottom:8px;font-size:14px;font-weight:700;color:var(--text-700)}
.form-field input,.form-field select,.form-field textarea{
  width:100%;min-height:48px;padding:12px 16px;
  font-size:15.5px;line-height:1.5;
  color:var(--text-900);background:#fff;
  border:1px solid var(--line);border-radius:14px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
  appearance:none;-webkit-appearance:none;
}
.form-field textarea{min-height:120px;resize:vertical;padding-top:14px}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-400)}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(15,185,142,.18);
}
.form-field{position:relative}
.form-field.select::after{
  content:"";position:absolute;right:18px;bottom:21px;
  width:8px;height:8px;border-right:1.75px solid var(--text-500);border-bottom:1.75px solid var(--text-500);
  transform:rotate(45deg);pointer-events:none;
}
.form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:4px}
.privacy-note{grid-column:1/-1;font-size:13px;line-height:1.6;color:var(--text-400)}
.form-note{grid-column:1/-1;font-size:14px;color:var(--brand-600);font-weight:700;min-height:20px}

/* ===================== 页脚 ===================== */
.site-footer{position:relative;background:var(--ink-900);color:rgba(255,255,255,.6);padding-top:56px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,245,198,.75),transparent);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:40px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:52px}}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:34ch}
.footer-contact{margin-top:16px;display:flex;flex-direction:column;gap:6px;font-size:14px;color:rgba(255,255,255,.6)}
.footer-contact a:hover{color:#fff}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.02em;margin-bottom:12px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.6);padding:7px 0;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a:hover{color:#fff}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --ink-900:#0A1411;--ink-800:#10201A;--ink-700:#16302A;
  --brand-500:#0FB98E;--brand-400:#22D6A3;--brand-600:#0A8F6C;
  --accent-500:#FF8A3D;--accent-400:#FFB25E;
  --neon:#2BF5C6;
  --bg:#F4F7F4;--surface:#FFFFFF;--surface-alt:#EDF4EF;--line:#DCE7E1;
  --text-900:#0F1B17;--text-700:#33463F;--text-500:#5F746C;--text-400:#8A9C95;
  --grad-brand:linear-gradient(135deg,#0FB98E 0%,#22D6A3 55%,#7CE8C4 100%);
  --grad-accent:linear-gradient(120deg,#FF8A3D,#FFB25E);
  --r-sm:10px;--r-md:16px;--r-lg:24px;--r-xl:32px;
  --shadow-card:0 1px 0 rgba(15,27,23,.04),0 8px 24px -12px rgba(15,27,23,.18);
  --shadow-hover:0 18px 40px -18px rgba(10,143,108,.35);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  font-size:16.5px;line-height:1.8;letter-spacing:.01em;
  color:var(--text-900);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-600)}
button{font-family:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;color:var(--text-900)}
p{margin:0}
:focus-visible{outline:3px solid rgba(43,245,198,.55);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:640px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}
@media(min-width:1440px){.container{max-width:1280px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,20,17,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(43,245,198,.14);
}
.nav-wrap{display:flex;align-items:center;gap:16px;height:60px}
@media(min-width:1024px){.nav-wrap{height:68px;gap:20px}}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;letter-spacing:.01em}
.brand:hover{color:#fff}
.brand-mark{
  width:32px;height:32px;border-radius:11px;flex:0 0 32px;
  background:var(--grad-brand);display:grid;place-items:center;
  box-shadow:0 0 18px rgba(43,245,198,.35);
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#04160F;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:15.5px;white-space:nowrap}
@media(min-width:1024px){.brand-text{font-size:16.5px}.brand-mark{width:34px;height:34px;flex:0 0 34px}}
.nav-links{display:none}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;min-height:44px;
  padding:10px 14px;border-radius:999px;font-size:15px;
  color:rgba(255,255,255,.72);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--neon),rgba(43,245,198,0));
  transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{
  color:#fff;background:rgba(43,245,198,.08);
  text-shadow:0 0 12px rgba(43,245,198,.55);
}
.nav-links a.is-active::after{transform:scaleX(1);left:14px;right:14px;background:var(--neon);box-shadow:0 0 10px rgba(43,245,198,.6)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 24px;border:0;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.02em;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{
  background:var(--grad-brand);color:#04160F;
  box-shadow:0 10px 26px -14px rgba(15,185,142,.9);
}
.btn-primary:hover{color:#04160F;transform:translateY(-2px);box-shadow:0 16px 32px -14px rgba(15,185,142,.95);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-accent{background:var(--grad-accent);color:#3A1600;box-shadow:0 12px 26px -14px rgba(255,138,61,.9)}
.btn-accent:hover{color:#3A1600;transform:translateY(-2px);filter:brightness(1.05)}
.btn-accent:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text-900)}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.nav-cta{display:none;margin-left:8px}
@media(min-width:1024px){.nav-cta{display:inline-flex}}
.nav-burger{
  margin-left:auto;width:44px;height:44px;display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;background:rgba(43,245,198,.06);
  border:1px solid rgba(43,245,198,.22);border-radius:12px;cursor:pointer;
}
.nav-burger span{width:18px;height:2px;border-radius:2px;background:#fff;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-burger:active{transform:scale(.96)}
@media(min-width:1024px){.nav-burger{display:none}}

/* drawer */
.nav-drawer{position:fixed;inset:0;z-index:90;display:none}
.nav-drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(4,10,8,.62)}
.drawer-panel{
  position:relative;width:min(320px,84vw);height:100%;
  background:#0A1411;border-right:1px solid rgba(43,245,198,.18);
  padding:20px;display:flex;flex-direction:column;gap:8px;
  box-shadow:0 0 60px rgba(0,0,0,.5);
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.1)}
.drawer-head .brand-text{color:#fff;font-weight:800;font-size:15.5px}
.drawer-close{
  width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);color:#fff;font-size:20px;line-height:1;cursor:pointer;
}
.drawer-close:hover{background:rgba(43,245,198,.14);border-color:rgba(43,245,198,.4)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-top:10px}
.drawer-nav a{
  position:relative;display:flex;align-items:center;min-height:48px;
  padding:6px 12px 6px 16px;border-radius:10px;color:rgba(255,255,255,.78);font-size:16px;
}
.drawer-nav a::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;background:transparent;transition:background .22s var(--ease)}
.drawer-nav a:hover{color:#fff;background:rgba(43,245,198,.08)}
.drawer-nav a:hover::before,.drawer-nav a.is-active::before{background:var(--neon)}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:var(--surface-alt);border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:13px 0;font-size:13.5px;color:var(--text-500)}
.crumb a{color:var(--text-700);font-weight:600}
.crumb a:hover{color:var(--brand-600)}
.crumb .sep{color:var(--text-400)}
.crumb .current{color:var(--text-900);font-weight:700;max-width:56vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-head{padding:36px 0 0}
@media(min-width:1024px){.article-head{padding:52px 0 0}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:rgba(15,185,142,.1);border:1px solid rgba(15,185,142,.26);
  color:var(--brand-600);font-size:12.5px;font-weight:700;letter-spacing:.04em;
}
.article-head h1{
  margin:18px 0 0;font-size:clamp(26px,3.6vw,42px);line-height:1.24;font-weight:800;
  letter-spacing:0;max-width:22em;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:18px}
.pill{
  display:inline-flex;align-items:center;min-height:28px;padding:5px 13px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
}
.pill-brand{background:var(--grad-brand);color:#04160F}
.meta-item{font-size:14px;color:var(--text-500)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--text-400);display:inline-block}
.head-rule{
  margin:26px 0 0;height:1px;border-radius:1px;
  background:linear-gradient(90deg,rgba(15,185,142,.55),rgba(15,185,142,.12) 55%,transparent);
}

/* ---------- layout ---------- */
.article-layout{display:grid;gap:28px;padding:30px 0 0}
@media(min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start;padding:38px 0 0}
}
.article-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 20px 28px;box-shadow:var(--shadow-card);
}
@media(min-width:640px){.article-card{padding:32px 34px 36px}}
.prose{font-size:16.5px;line-height:1.8;color:var(--text-700);max-width:74ch}
.prose>*:first-child{margin-top:0}
.prose h2{
  position:relative;margin:34px 0 14px;padding-left:16px;
  font-size:clamp(21px,2.1vw,27px);line-height:1.34;font-weight:700;color:var(--text-900);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:var(--grad-brand);
}
.prose h3{
  position:relative;margin:26px 0 10px;padding-left:14px;
  font-size:19px;line-height:1.42;font-weight:700;color:var(--text-900);
}
.prose h3::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand-500),rgba(15,185,142,.25));
}
.prose p{margin:0 0 1em}
.prose ul{list-style:none;margin:0 0 1.1em;padding:0}
.prose ul li{position:relative;padding-left:20px;margin-bottom:9px}
.prose ul li::before{
  content:"";position:absolute;left:0;top:.66em;width:8px;height:8px;border-radius:2px;
  background:var(--brand-500);
}
.prose ol{list-style:none;counter-reset:ol;margin:0 0 1.1em;padding:0}
.prose ol li{position:relative;padding-left:30px;margin-bottom:9px;counter-increment:ol}
.prose ol li::before{
  content:counter(ol);position:absolute;left:0;top:.18em;width:21px;height:21px;border-radius:7px;
  display:grid;place-items:center;font-size:12.5px;font-weight:800;color:var(--brand-600);
  background:rgba(15,185,142,.12);border:1px solid rgba(15,185,142,.24);
}
.prose blockquote{
  margin:24px 0;padding:18px 22px;border-left:3px solid var(--brand-500);
  background:#F0F8F4;border-radius:0 var(--r-md) var(--r-md) 0;
  color:var(--text-900);font-size:17px;line-height:1.75;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:20px;width:100%;height:auto;margin:22px 0 10px;border:1px solid var(--line)}
.prose figure{margin:22px 0}
.prose figcaption{font-size:14px;color:var(--text-500);text-align:center;margin-top:8px}
.prose hr{border:0;border-top:1px solid var(--line);margin:30px 0}
.prose a{color:var(--brand-600);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.prose a:hover{color:var(--brand-500)}
.prose strong{color:var(--text-900)}
.prose table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px}
.prose th,.prose td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.prose th{background:var(--surface-alt);color:var(--text-900);font-weight:700}
.prose code{background:var(--surface-alt);border:1px solid var(--line);border-radius:6px;padding:2px 6px;font-size:14px}
.empty-state{padding:34px 8px;text-align:center}
.empty-state h2{font-size:22px;margin-bottom:10px;padding-left:0}
.empty-state h2::before{display:none}
.empty-state p{color:var(--text-500);margin-bottom:20px}

/* tags */
.tag-block{margin-top:32px;padding-top:22px;border-top:1px solid var(--line)}
.tag-block h2{font-size:14px;letter-spacing:.06em;color:var(--text-500);font-weight:700;margin-bottom:12px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag-chip{
  display:inline-flex;align-items:center;min-height:34px;padding:6px 15px;border-radius:999px;
  background:var(--surface-alt);border:1px solid var(--line);color:var(--text-700);
  font-size:13px;font-weight:700;letter-spacing:.03em;
  transition:border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.tag-chip:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-2px)}

/* postnav */
.postnav{display:grid;gap:14px;margin-top:22px}
@media(min-width:700px){.postnav{grid-template-columns:1fr 1fr}}
.postnav a{
  display:block;padding:18px 20px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.postnav a:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(15,185,142,.4)}
.postnav .pn-dir{display:flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;color:var(--brand-600);letter-spacing:.05em}
.postnav .pn-dir svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease)}
.postnav a:hover .pn-dir svg{transform:translateX(3px)}
.postnav .pn-title{display:block;margin-top:8px;font-size:15.5px;font-weight:700;color:var(--text-900);line-height:1.5}
.postnav .pn-sub{display:block;margin-top:4px;font-size:13.5px;color:var(--text-500)}
.back-row{margin-top:22px}
.back-row .btn{width:100%}
@media(min-width:520px){.back-row .btn{width:auto}}

/* ---------- sidebar ---------- */
.sidebar{display:grid;gap:20px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--shadow-card);
}
.side-card h2{font-size:15.5px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h2::before{content:"";width:4px;height:16px;border-radius:3px;background:var(--grad-brand)}
.side-list{display:grid;gap:14px}
.side-post{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:12px;align-items:start;
  padding:8px;border-radius:var(--r-sm);
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.side-post:hover{background:var(--surface-alt);transform:translateX(2px)}
.side-thumb{width:64px;height:48px;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:linear-gradient(135deg,#0FB98E,#7CE8C4)}
.side-thumb img{width:100%;height:100%;object-fit:cover}
.side-text strong{display:block;font-size:14px;font-weight:700;color:var(--text-900);line-height:1.5;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.side-text em{display:block;font-style:normal;margin-top:4px;font-size:12.5px;color:var(--text-500)}
.side-links{display:grid;gap:10px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  min-height:44px;padding:10px 14px;border-radius:var(--r-sm);
  background:var(--surface-alt);border:1px solid var(--line);
  font-size:14px;font-weight:700;color:var(--text-700);
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
.side-links a:hover{border-color:var(--brand-500);color:var(--brand-600);background:#fff}
.side-links a span.arrow{color:var(--brand-600);font-weight:800}
.side-cta{
  background:linear-gradient(160deg,#0A1411,#10201A);
  border:1px solid rgba(43,245,198,.22);
  box-shadow:inset 0 0 0 1px rgba(43,245,198,.12),0 22px 46px -26px rgba(10,143,108,.75);
}
.side-cta h2{color:#fff}
.side-cta h2::before{background:var(--neon);box-shadow:0 0 10px rgba(43,245,198,.7)}
.side-cta p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.72);margin-bottom:16px}
.side-cta .btn{width:100%}

/* ---------- faq ---------- */
.section{padding:56px 0 0}
@media(min-width:768px){.section{padding:80px 0 0}}
@media(min-width:1024px){.section{padding:96px 0 0}}
.section-head{margin-bottom:24px}
.section-head h2{font-size:clamp(22px,2.4vw,32px);font-weight:700}
.section-head p{margin-top:10px;color:var(--text-500);font-size:15.5px;max-width:62ch}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:2px 20px;margin-bottom:12px;box-shadow:var(--shadow-card);
  transition:border-color .24s var(--ease);
}
.faq-item[open]{border-color:rgba(15,185,142,.42)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:16.5px;font-weight:700;color:var(--text-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);transition:transform .24s var(--ease),border-color .24s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--text-700);border-radius:1px;transition:background .24s var(--ease)}
.faq-icon::before{left:50%;top:6px;bottom:6px;width:1.75px;transform:translateX(-50%)}
.faq-icon::after{top:50%;left:6px;right:6px;height:1.75px;transform:translateY(-50%)}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:var(--brand-500)}
.faq-item[open] .faq-icon::before,.faq-item[open] .faq-icon::after{background:var(--brand-600)}
.faq-body{padding:0 0 18px;font-size:15.5px;line-height:1.8;color:var(--text-700);max-width:72ch}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;margin-top:56px;border-radius:var(--r-xl);
  padding:34px 24px;color:#fff;
  background:
    radial-gradient(900px 420px at 12% -20%,rgba(43,245,198,.22),transparent 62%),
    linear-gradient(160deg,#0A1411,#10201A);
  border:1px solid rgba(43,245,198,.2);
  box-shadow:inset 0 0 0 1px rgba(43,245,198,.1),0 30px 60px -40px rgba(10,143,108,.8);
}
@media(min-width:768px){.cta-band{padding:46px 44px}}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--grad-brand);opacity:.85;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:800;max-width:20em}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.74);font-size:15.5px;max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.btn-ghost-dark{
  background:transparent;border:1px solid rgba(255,255,255,.28);color:#fff;
}
.btn-ghost-dark:hover{border-color:rgba(43,245,198,.75);background:rgba(43,245,198,.08);color:#fff;transform:translateY(-2px)}
.btn-ghost-dark:active{transform:translateY(0)}

/* ---------- footer ---------- */
.site-footer{
  margin-top:64px;background:#0A1411;color:rgba(255,255,255,.6);
  border-top:1px solid rgba(43,245,198,.16);position:relative;padding:44px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,rgba(43,245,198,.9),rgba(43,245,198,.1));
}
.footer-grid{display:grid;gap:28px}
@media(min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:34ch}
.footer-contact{display:grid;gap:6px;margin-top:14px;font-size:13.5px;color:rgba(255,255,255,.56)}
.footer-contact a{color:rgba(255,255,255,.78)}
.footer-contact a:hover{color:var(--neon)}
.footer-col h4{font-size:14px;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:.04em}
.footer-col a{
  display:block;min-height:34px;line-height:34px;font-size:14px;color:rgba(255,255,255,.6);
  transition:color .22s var(--ease),transform .22s var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  margin-top:32px;padding:18px 0 24px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --ink-900:#0A1411;
  --ink-800:#10201A;
  --ink-700:#16302A;
  --brand-500:#0FB98E;
  --brand-400:#22D6A3;
  --brand-600:#0A8F6C;
  --accent-500:#FF8A3D;
  --accent-400:#FFB25E;
  --neon:#2BF5C6;
  --bg:#F4F7F4;
  --surface:#FFFFFF;
  --surface-alt:#EDF4EF;
  --line:#DCE7E1;
  --text-900:#0F1B17;
  --text-700:#33463F;
  --text-500:#5F746C;
  --text-400:#8A9C95;
  --grad-brand:linear-gradient(135deg,#0FB98E 0%,#22D6A3 55%,#7CE8C4 100%);
  --grad-accent:linear-gradient(120deg,#FF8A3D,#FFB25E);
  --grad-dark:radial-gradient(1200px 600px at 18% -10%,rgba(43,245,198,.18),transparent 62%),linear-gradient(160deg,#0A1411,#10201A);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --shadow-card:0 1px 0 rgba(15,27,23,.04),0 8px 24px -12px rgba(15,27,23,.18);
  --shadow-hover:0 18px 40px -18px rgba(10,143,108,.35);
  --ease:cubic-bezier(.2,.8,.2,1);
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;color:var(--text-900);line-height:1.25;font-weight:700;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(43,245,198,.45);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:640px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}
@media (min-width:1440px){.container{max-width:1280px;}}
.section{padding:56px 0;}
@media (min-width:640px){.section{padding:80px 0;}}
@media (min-width:1024px){.section{padding:104px 0;}}

/* ---------- 顶栏导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,20,17,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(43,245,198,.14);
}
.nav-wrap{display:flex;align-items:center;gap:16px;height:60px;}
@media (min-width:1024px){.nav-wrap{height:var(--nav-h);}}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 1px rgba(43,245,198,.35),0 0 18px -4px rgba(43,245,198,.6);
  flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#06231B;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.brand-text{color:#fff;font-size:16px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
@media (min-width:1024px){.brand-text{font-size:17px;}}
.nav-links{display:none;}
@media (min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:12px;}
}
.nav-links a{
  position:relative;
  display:inline-flex;align-items:center;
  min-height:44px;
  padding:10px 14px;
  font-size:15px;
  color:rgba(255,255,255,.72);
  border-radius:999px;
  transition:color .24s var(--ease),background .24s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:7px;height:2px;
  background:var(--grad-brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;opacity:0;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(43,245,198,.06);}
.nav-links a:hover::after{transform:scaleX(1);opacity:.8;}
.nav-links a.is-active{
  color:#fff;
  background:rgba(43,245,198,.08);
  text-shadow:0 0 12px rgba(43,245,198,.55);
}
.nav-links a.is-active::after{transform:scaleX(1);opacity:1;box-shadow:0 0 12px rgba(43,245,198,.7);}
.nav-cta{display:none;}
@media (min-width:1024px){.nav-cta{display:inline-flex;margin-left:auto;}}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:12px 26px;
  border:0;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.02em;
  cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{
  background:var(--grad-brand);
  color:#052A21;
  box-shadow:0 10px 24px -12px rgba(15,185,142,.85);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px -12px rgba(15,185,142,.9);filter:brightness(1.05);}
.btn-primary:active{transform:translateY(0);filter:brightness(.95);}
.btn-accent{
  background:var(--grad-accent);
  color:#3A1A05;
  box-shadow:0 12px 28px -12px rgba(255,138,61,.85);
}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 18px 34px -12px rgba(255,138,61,.9);filter:brightness(1.04);}
.btn-accent:active{transform:translateY(0);filter:brightness(.95);}
.btn-ghost-light{
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-900);
}
.btn-ghost-light:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-2px);}
.btn-ghost-dark{
  border:1px solid rgba(255,255,255,.28);
  background:transparent;
  color:#fff;
}
.btn-ghost-dark:hover{border-color:var(--neon);background:rgba(43,245,198,.08);transform:translateY(-2px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--brand-600);
  min-height:44px;
}
.link-arrow svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease);}
.link-arrow:hover{color:var(--brand-500);}
.link-arrow:hover svg{transform:translateX(3px);}
.nav-burger{
  margin-left:auto;
  width:44px;height:44px;
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  background:rgba(43,245,198,.08);
  border:1px solid rgba(43,245,198,.24);
  border-radius:12px;
  cursor:pointer;
}
.nav-burger span{display:block;width:18px;height:2px;border-radius:2px;background:#DDFBF1;transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-burger:hover{border-color:var(--neon);}
@media (min-width:1024px){.nav-burger{display:none;}}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{
  position:fixed;top:0;right:0;
  height:100%;width:min(84vw,340px);
  background:var(--ink-900);
  border-left:1px solid rgba(43,245,198,.18);
  z-index:90;
  padding:22px 20px 28px;
  display:flex;flex-direction:column;gap:18px;
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid rgba(43,245,198,.16);}
.drawer-title{color:#fff;font-size:15px;font-weight:700;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;
  background:transparent;border:1px solid rgba(255,255,255,.2);
  color:#fff;font-size:20px;line-height:1;cursor:pointer;
}
.drawer-close:hover{border-color:var(--neon);color:var(--neon);}
.drawer-links{display:flex;flex-direction:column;gap:6px;}
.drawer-links a{
  display:flex;align-items:center;
  min-height:48px;padding:12px 14px;
  color:rgba(255,255,255,.78);
  border-radius:12px;font-size:15px;
  border-left:3px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.drawer-links a:hover{background:rgba(43,245,198,.08);color:#fff;}
.drawer-links a.is-active{
  color:#fff;background:rgba(43,245,198,.1);
  border-left-color:var(--neon);
  text-shadow:0 0 12px rgba(43,245,198,.5);
}
.drawer-mask{position:fixed;inset:0;background:rgba(6,14,11,.62);z-index:80;display:none;}
.drawer-mask.is-open{display:block;}

/* ---------- 分类窄版 Hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--grad-dark);
  padding:26px 0 44px;
  border-bottom:1px solid rgba(43,245,198,.14);
}
@media (min-width:1024px){.cat-hero{padding:30px 0 54px;}}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  opacity:.24;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,20,17,.72),rgba(10,20,17,.92));
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:18px;}
.breadcrumb a{color:rgba(255,255,255,.72);}
.breadcrumb a:hover{color:var(--neon);}
.breadcrumb .sep{color:rgba(255,255,255,.35);}
.breadcrumb .current{color:#fff;}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  background:rgba(43,245,198,.12);
  border:1px solid rgba(43,245,198,.32);
  color:#9BF6DE;
  margin-bottom:16px;
}
.pill svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.cat-hero h1{
  color:#fff;
  font-size:clamp(26px,4vw,42px);
  font-weight:800;
  line-height:1.2;
  max-width:19em;
}
.cat-hero h1 .hl{color:var(--neon);}
.cat-hero-sub{
  margin-top:14px;
  max-width:38em;
  font-size:16px;
  line-height:1.8;
  color:rgba(255,255,255,.76);
}
@media (min-width:1024px){.cat-hero-sub{font-size:17px;}}

/* ---------- 导语卡 ---------- */
.lead-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  padding:24px;
  display:grid;
  gap:26px;
}
@media (min-width:640px){.lead-card{padding:32px;}}
@media (min-width:1024px){
  .lead-card{grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:40px;padding:44px;border-radius:var(--r-xl);align-items:center;}
}
.lead-card h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;}
.lead-card p{font-size:16px;color:var(--text-700);max-width:36em;}
@media (min-width:1024px){.lead-card p{font-size:16.5px;}}
.lead-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.lead-points span{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border-radius:999px;
  background:var(--surface-alt);
  border:1px solid var(--line);
  font-size:13px;font-weight:700;color:var(--text-700);
}
.lead-points svg{width:16px;height:16px;fill:none;stroke:var(--brand-600);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.lead-stats{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
  padding:20px;
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,#0A1411,#10201A);
  box-shadow:inset 0 0 0 1px rgba(43,245,198,.18),0 18px 36px -22px rgba(10,143,108,.6);
}
.stat{padding:6px 4px 6px 12px;border-left:1px solid rgba(43,245,198,.22);}
.stat-num{
  font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,30px);
  font-weight:800;
  line-height:1.1;
  background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.stat-unit{font-size:13px;font-weight:700;color:#9BF6DE;margin-left:2px;}
.stat p{margin:6px 0 0;font-size:13px;line-height:1.6;color:rgba(255,255,255,.72);}

/* ---------- 分组区（左图右文交错） ---------- */
.groups-section{background:linear-gradient(180deg,var(--bg),#EEF5F0);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head .eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--brand-600);margin-bottom:10px;}
.section-head h2{font-size:clamp(23px,2.6vw,34px);margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--text-500);max-width:44em;}
.groups-grid{margin-top:8px;}
.sticky-visual{position:relative;margin-bottom:24px;}
@media (min-width:1024px){
  .sticky-visual{position:sticky;top:96px;margin-bottom:0;}
}
.sticky-visual img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-lg);
  border:1px solid rgba(15,27,23,.08);
  box-shadow:var(--shadow-card);
}
.visual-badge{
  position:absolute;left:16px;bottom:16px;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:999px;
  background:rgba(10,20,17,.86);
  border:1px solid rgba(43,245,198,.35);
  color:#fff;font-size:13px;font-weight:700;
  box-shadow:0 0 22px -6px rgba(43,245,198,.55);
}
.visual-badge svg{width:16px;height:16px;fill:none;stroke:var(--neon);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.group-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px 22px 12px;
  box-shadow:var(--shadow-card);
  margin-bottom:18px;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
@media (min-width:640px){.group-card{padding:26px 28px 14px;}}
@media (min-width:1024px){
  .group-card:nth-child(even){margin-left:44px;}
  .group-card{margin-bottom:22px;}
}
.group-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(15,185,142,.35);}
.group-card .g-top{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.group-card .g-index{
  font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:800;letter-spacing:.06em;
  color:var(--brand-600);
  background:rgba(15,185,142,.1);
  border-radius:999px;padding:4px 10px;
}
.group-card h3{font-size:19px;line-height:1.4;}
@media (min-width:1024px){.group-card h3{font-size:21px;}}
.group-card p{font-size:16px;color:var(--text-700);margin-top:8px;max-width:40em;}
.group-card .g-foot{margin-top:6px;}

/* ---------- 三步流程条带 ---------- */
.flow-band{
  background:var(--surface-alt);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.flow-grid{display:grid;gap:16px;}
@media (min-width:768px){.flow-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}}
.flow-item{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.flow-item .f-num{
  font-variant-numeric:tabular-nums;
  font-size:34px;font-weight:800;line-height:1;
  background:var(--grad-brand);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  margin-bottom:12px;
}
.flow-item h3{font-size:18px;margin-bottom:6px;}
.flow-item p{font-size:15px;color:var(--text-500);}

/* ---------- FAQ ---------- */
.faq-section{background:var(--bg);}
.faq-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:28px;}
.faq-head h2{font-size:clamp(23px,2.6vw,34px);margin-bottom:8px;}
.faq-head p{font-size:16px;color:var(--text-500);margin:0;max-width:40em;}
.accordion{background:transparent;border:0;margin:0;}
.accordion-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.accordion-item:hover{border-color:rgba(15,185,142,.35);}
.accordion-item.is-active{border-color:rgba(15,185,142,.42);box-shadow:var(--shadow-card);}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;
  padding:18px 20px;
  border:0;background:transparent;
  font-size:16.5px;font-weight:700;color:var(--text-900);
  line-height:1.5;
}
@media (min-width:640px){.accordion-title{padding:20px 26px;}}
.accordion-title::before{display:none !important;}
.accordion-title:hover{color:var(--brand-600);}
.acc-ind{
  flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);
  position:relative;
  transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.acc-ind::before,.acc-ind::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--text-500);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:background .25s var(--ease);
}
.acc-ind::before{width:11px;height:1.6px;}
.acc-ind::after{width:1.6px;height:11px;}
.accordion-item.is-active .acc-ind,
.accordion-title[aria-expanded="true"] .acc-ind{
  transform:rotate(45deg);
  border-color:rgba(15,185,142,.55);
  background:rgba(15,185,142,.08);
}
.accordion-item.is-active .acc-ind::before,
.accordion-item.is-active .acc-ind::after,
.accordion-title[aria-expanded="true"] .acc-ind::before,
.accordion-title[aria-expanded="true"] .acc-ind::after{background:var(--brand-600);}
.accordion-content{
  padding:0 20px 18px !important;
  border:0 !important;
  background:transparent !important;
  font-size:16px;
  color:var(--text-700);
  line-height:1.8;
  animation:fadeIn .25s var(--ease);
}
@media (min-width:640px){.accordion-content{padding:0 26px 22px !important;}}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

/* ---------- 通栏 CTA ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--grad-dark);
  padding:36px 24px;
  box-shadow:inset 0 0 0 1px rgba(43,245,198,.2),0 28px 60px -34px rgba(10,143,108,.7);
}
@media (min-width:1024px){.cta-band{padding:52px 48px;}}
.cta-band::before{
  content:"";position:absolute;right:-80px;top:-90px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(43,245,198,.22),transparent 68%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;gap:22px;align-items:center;}
@media (min-width:1024px){.cta-inner{grid-template-columns:minmax(0,1.6fr) auto;gap:36px;}}
.cta-band h2{color:#fff;font-size:clamp(22px,2.5vw,32px);margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.76);font-size:16px;margin:0;max-width:40em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  background:var(--ink-900);
  border-top:1px solid transparent;
  border-image:linear-gradient(90deg,rgba(43,245,198,0),rgba(43,245,198,.6),rgba(43,245,198,0)) 1;
  padding:48px 0 20px;
  color:rgba(255,255,255,.6);
}
.footer-grid{display:grid;gap:32px;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:26em;}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:14px;color:rgba(255,255,255,.55);margin-top:6px;}
.footer-contact a{color:rgba(255,255,255,.78);}
.footer-contact a:hover{color:var(--neon);}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.04em;}
.footer-col a{
  display:block;
  font-size:14px;
  color:rgba(255,255,255,.6);
  padding:6px 0;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:36px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
/* ============ 设计令牌 ============ */
:root{
  --ink-900:#0A1411;
  --ink-800:#10201A;
  --ink-700:#16302A;
  --brand-500:#0FB98E;
  --brand-400:#22D6A3;
  --brand-600:#0A8F6C;
  --accent-500:#FF8A3D;
  --accent-400:#FFB25E;
  --neon:#2BF5C6;
  --bg:#F4F7F4;
  --surface:#FFFFFF;
  --surface-alt:#EDF4EF;
  --line:#DCE7E1;
  --text-900:#0F1B17;
  --text-700:#33463F;
  --text-500:#5F746C;
  --text-400:#8A9C95;
  --grad-brand:linear-gradient(135deg,#0FB98E 0%,#22D6A3 55%,#7CE8C4 100%);
  --grad-accent:linear-gradient(120deg,#FF8A3D,#FFB25E);
  --grad-ink:linear-gradient(160deg,#0A1411,#10201A);
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --shadow-card:0 1px 0 rgba(15,27,23,.04),0 8px 24px -12px rgba(15,27,23,.18);
  --shadow-hover:0 18px 40px -18px rgba(10,143,108,.35);
  --ease:cubic-bezier(.2,.8,.2,1);
  --container:1200px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text-700);
  background:var(--bg);
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4,h5{margin:0;color:var(--text-900);font-weight:700;line-height:1.25;}
h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.2;}
h2{font-size:clamp(24px,2.6vw,36px);line-height:1.28;}
h3{font-size:20px;line-height:1.4;}
h4{font-size:14px;line-height:1.4;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;background-color:transparent;transition:color .22s var(--ease),opacity .22s var(--ease);}
a:hover,a:focus{color:var(--brand-500);text-decoration:none;}
ul,ol{list-style:none;margin:0;padding:0;}
button{font-family:inherit;font-size:inherit;line-height:inherit;margin:0;}
:focus-visible{outline:3px solid rgba(43,245,198,.45);outline-offset:2px;}
::selection{background:rgba(43,245,198,.35);color:#04231B;}

/* ============ 容器与板块 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:640px){.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px;}}
@media (min-width:1440px){:root{--container:1280px;}}

.section{padding:56px 0;}
@media (min-width:640px){.section{padding:80px 0;}}
@media (min-width:1024px){.section{padding:104px 0;}}
.section-alt{background:var(--surface-alt);}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:36px;
}
.section-head h2{margin-bottom:6px;}
.section-head p{margin:0;color:var(--text-500);font-size:15px;max-width:56ch;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--brand-600);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  border-radius:2px;
  background:var(--grad-brand);
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:13px 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  text-decoration:none;
  cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease),filter .22s var(--ease);
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.btn-primary{
  background:var(--grad-brand);
  color:#04231B;
  box-shadow:0 10px 26px -12px rgba(15,185,142,.75);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -14px rgba(34,214,163,.8);color:#04231B;box-shadow:0 16px 34px -14px rgba(34,214,163,.8);}
.btn-primary:active{transform:translateY(0);filter:brightness(.94);}
.btn-accent{
  background:var(--grad-accent);
  color:#3A1A00;
  box-shadow:0 10px 26px -12px rgba(255,138,61,.75);
}
.btn-accent:hover{transform:translateY(-2px);color:#3A1A00;box-shadow:0 16px 34px -16px rgba(255,138,61,.85);}
.btn-accent:active{transform:translateY(0);filter:brightness(.95);}
.btn-ghost-dark{
  background:transparent;
  border-color:rgba(255,255,255,.28);
  color:#fff;
}
.btn-ghost-dark:hover{background:rgba(43,245,198,.08);border-color:var(--neon);color:#fff;}
.btn-ghost-light{
  background:var(--surface);
  border-color:var(--line);
  color:var(--text-900);
}
.btn-ghost-light:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-ghost-light:active{transform:translateY(0);}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:700;
  color:var(--brand-600);
  background:none;
  border:0;
  padding:0;
  min-height:44px;
}
.link-arrow svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;transition:transform .22s var(--ease);}
.link-arrow:hover{color:var(--brand-500);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,20,17,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(43,245,198,.14);
}
.nav-wrap{
  display:flex;
  align-items:center;
  gap:18px;
  height:68px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  flex:none;
}
.brand:hover{color:#fff;}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:11px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--grad-brand);
  box-shadow:0 0 18px -6px rgba(43,245,198,.8);
  flex:none;
}
.brand-mark svg{
  width:19px;height:19px;
  fill:none;
  stroke:#03211A;
  stroke-width:1.75;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.brand-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:.02em;
  white-space:nowrap;
  color:#fff;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  border-radius:10px;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.72);
  transition:color .22s var(--ease),background .22s var(--ease),text-shadow .22s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:7px;
  height:2px;
  border-radius:2px;
  background:var(--grad-brand);
  opacity:0;
  transform:scaleX(.35);
  transform-origin:left center;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06);}
.nav-links a:hover::after{opacity:1;transform:scaleX(1);}
.nav-links a.is-active{
  color:#fff;
  background:rgba(43,245,198,.08);
  text-shadow:0 0 12px rgba(43,245,198,.55);
}
.nav-links a.is-active::after{opacity:1;transform:scaleX(1);}
.nav-cta{
  margin-left:6px;
  min-height:42px;
  padding:10px 22px;
  font-size:14.5px;
}
.nav-burger{
  display:none;
  width:46px;
  height:46px;
  padding:0 12px;
  margin-left:auto;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.18);
  background:transparent;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.nav-burger:hover{border-color:rgba(43,245,198,.6);background:rgba(43,245,198,.08);}
.nav-burger span{
  display:block;
  width:100%;
  height:2px;
  border-radius:2px;
  background:#fff;
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.nav-drawer{
  display:none;
  position:fixed;
  top:0;
  left:0;
  right:0;
  padding:88px 20px 32px;
  background:radial-gradient(600px 300px at 85% -10%,rgba(43,245,198,.16),transparent 65%),#0A1411;
  border-bottom:1px solid rgba(43,245,198,.18);
  transform:translateY(-102%);
  transition:transform .28s var(--ease);
  z-index:70;
  max-height:100vh;
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateY(0);}
.nav-drawer a{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:52px;
  padding:12px 14px;
  border-radius:12px;
  color:rgba(255,255,255,.78);
  font-size:16px;
  font-weight:600;
  border-left:3px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.nav-drawer a:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-drawer a.is-active{
  color:#fff;
  background:rgba(43,245,198,.1);
  border-left-color:var(--neon);
  text-shadow:0 0 12px rgba(43,245,198,.5);
}
.nav-drawer .btn{margin-top:18px;width:100%;}

@media (max-width:1023px){
  .nav-links,.nav-cta{display:none;}
  .nav-burger{display:flex;}
  .nav-drawer{display:block;}
  .nav-wrap{height:60px;}
  .brand-mark{width:30px;height:30px;border-radius:10px;}
  .brand-text{font-size:15.5px;}
}

/* ============ 分类 Hero（斜切色块） ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  color:#fff;
  padding:52px 0 104px;
  background:
    radial-gradient(900px 420px at 88% -20%,rgba(255,178,94,.28),transparent 62%),
    radial-gradient(700px 420px at 6% 10%,rgba(43,245,198,.22),transparent 66%),
    linear-gradient(118deg,#08120F 0%,#0A8F6C 62%,#22D6A3 100%);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 58px),0 100%);
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.16;
  mix-blend-mode:luminosity;
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.72);
  margin-bottom:26px;
}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,.4);}
.breadcrumb .cur{color:var(--neon);font-weight:600;}
.cat-hero h1{
  color:#fff;
  max-width:19ch;
  letter-spacing:.005em;
  text-shadow:0 12px 40px rgba(0,0,0,.28);
}
.cat-hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,#FFFFFF 0%,#BFF8E6 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.cat-hero-sub{
  margin:20px 0 0;
  max-width:60ch;
  color:rgba(255,255,255,.82);
  font-size:16.5px;
  line-height:1.8;
}
.cat-hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.hero-chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 15px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.26);
  background:rgba(255,255,255,.08);
  font-size:13px;
  font-weight:600;
  color:rgba(255,255,255,.9);
  letter-spacing:.02em;
}
.hero-chip svg{width:15px;height:15px;fill:none;stroke:var(--neon);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 速览数据条 ============ */
.stat-strip{
  position:relative;
  z-index:5;
  margin-top:-56px;
  display:grid;
  grid-template-columns:repeat(2,1fr);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.stat-cell{
  padding:22px 18px;
  border-bottom:1px solid var(--line);
  border-right:1px solid var(--line);
  transition:background .22s var(--ease);
}
.stat-cell:nth-child(2n){border-right:0;}
.stat-cell:nth-child(n+3){border-bottom:0;}
.stat-cell:hover{background:var(--surface-alt);}
.stat-num{
  font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,32px);
  font-weight:800;
  line-height:1.1;
  background:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  letter-spacing:0;
}
.stat-unit{
  font-size:13px;
  font-weight:700;
  color:var(--brand-600);
  margin-left:4px;
}
.stat-label{
  margin-top:6px;
  font-size:13px;
  color:var(--text-500);
  line-height:1.5;
}
@media (min-width:768px){
  .stat-strip{grid-template-columns:repeat(4,1fr);margin-top:-64px;}
  .stat-cell{border-bottom:0;padding:26px 24px;}
  .stat-cell:nth-child(2n){border-right:1px solid var(--line);}
  .stat-cell:last-child{border-right:0;}
}

/* ============ 时间轴条目 ============ */
.timeline-wrap{position:relative;}
.timeline{
  position:relative;
  margin-top:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:112px;
  top:26px;
  bottom:26px;
  width:1px;
  background:linear-gradient(180deg,rgba(15,185,142,.55),rgba(15,185,142,.08));
  z-index:3;
  pointer-events:none;
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:100px 1fr;
  gap:28px;
  padding:24px 20px 24px 1px;
  border-radius:var(--r-lg);
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.tl-item + .tl-item{margin-top:6px;}
.tl-item:hover{background:var(--surface-alt);transform:translateX(2px);}
.tl-num{
  font-size:clamp(38px,5vw,52px);
  font-weight:800;
  line-height:1;
  letter-spacing:-.01em;
  color:transparent;
  -webkit-text-stroke:1.5px var(--brand-500);
  text-stroke:1.5px var(--brand-500);
  font-variant-numeric:tabular-nums;
  text-align:center;
  padding-top:4px;
  transition:color .25s var(--ease),-webkit-text-stroke-color .25s var(--ease);
  user-select:none;
}
.tl-item:hover .tl-num{
  color:rgba(15,185,142,.12);
  -webkit-text-stroke-color:var(--brand-600);
}
.tl-body h3{margin-bottom:8px;font-size:21px;}
.tl-body p{color:var(--text-500);font-size:16px;margin-bottom:12px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--surface-alt);
  border:1px solid var(--line);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.03em;
  color:var(--brand-600);
  line-height:1.5;
}
.tag-dark{
  background:rgba(43,245,198,.1);
  border-color:rgba(43,245,198,.28);
  color:var(--neon);
}
@media (max-width:639px){
  .timeline::before{left:74px;}
  .tl-item{grid-template-columns:64px 1fr;gap:18px;padding:20px 12px 20px 1px;}
  .tl-num{font-size:34px;-webkit-text-stroke-width:1.2px;}
  .tl-body h3{font-size:18.5px;}
  .tl-body p{font-size:15.5px;}
}

/* ============ 双列对照卡 ============ */
.compare-card{
  height:100%;
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px;
  box-shadow:var(--shadow-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(15,185,142,.4);}
.compare-card.is-focus{
  border-color:rgba(15,185,142,.45);
  box-shadow:0 20px 44px -26px rgba(10,143,108,.55);
  background:linear-gradient(180deg,#F7FDFA 0%,#FFFFFF 46%);
}
.compare-thumb{
  position:relative;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/10;
  background:linear-gradient(135deg,#0FB98E,#7CE8C4);
  margin-bottom:20px;
}
.compare-thumb img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .35s var(--ease);
}
.compare-card:hover .compare-thumb img{transform:scale(1.03);}
.compare-badge{
  position:absolute;
  top:12px;
  left:12px;
  padding:5px 13px;
  border-radius:999px;
  background:rgba(10,20,17,.82);
  border:1px solid rgba(43,245,198,.35);
  color:var(--neon);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1.6;
}
.compare-card h3{font-size:20px;margin-bottom:8px;}
.compare-card .lead{color:var(--text-500);font-size:15px;margin-bottom:16px;}
.check-list{display:grid;gap:10px;margin-bottom:20px;}
.check-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:15px;
  color:var(--text-700);
  line-height:1.7;
}
.check-list svg{
  flex:none;
  width:18px;height:18px;
  margin-top:3px;
  fill:none;
  stroke:var(--brand-500);
  stroke-width:1.75;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.compare-card .card-foot{margin-top:auto;padding-top:6px;border-top:1px solid var(--line);}

/* ============ 提示条 ============ */
.notice-band{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:22px 24px;
  border-radius:var(--r-lg);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.notice-band .ico{
  flex:none;
  width:40px;height:40px;
  border-radius:12px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(15,185,142,.1);
}
.notice-band .ico svg{width:20px;height:20px;fill:none;stroke:var(--brand-600);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.notice-band strong{display:block;color:var(--text-900);font-size:16px;margin-bottom:4px;}
.notice-band p{margin:0;color:var(--text-500);font-size:15px;}

/* ============ FAQ ============ */
.faq-list{max-width:920px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:2px 22px;
  margin-bottom:12px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:rgba(15,185,142,.35);}
.faq-item.is-open{
  border-color:rgba(15,185,142,.45);
  box-shadow:0 14px 34px -24px rgba(15,185,142,.7);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:58px;
  padding:16px 0;
  background:none;
  border:0;
  text-align:left;
  font-size:16.5px;
  font-weight:700;
  color:var(--text-900);
  cursor:pointer;
  line-height:1.5;
  transition:color .22s var(--ease);
}
.faq-q:hover{color:var(--brand-600);}
.faq-icon{
  position:relative;
  flex:none;
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--line);
  transition:border-color .25s var(--ease),transform .25s var(--ease),background .25s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--brand-600);
  border-radius:2px;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-icon::before{width:11px;height:1.75px;transform:translate(-50%,-50%);}
.faq-icon::after{width:1.75px;height:11px;transform:translate(-50%,-50%);}
.faq-item.is-open .faq-icon{border-color:rgba(15,185,142,.55);background:rgba(15,185,142,.08);transform:rotate(45deg);}
.faq-a{
  display:none;
  padding:0 40px 20px 0;
  color:var(--text-500);
  font-size:15.5px;
  line-height:1.8;
}
.faq-item.is-open .faq-a{display:block;animation:fadeUp .26s var(--ease);}
@keyframes fadeUp{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:translateY(0);}}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  padding:44px 28px;
  color:#fff;
  background:
    radial-gradient(700px 300px at 12% -30%,rgba(43,245,198,.3),transparent 62%),
    radial-gradient(500px 260px at 92% 120%,rgba(255,138,61,.28),transparent 60%),
    var(--grad-ink);
  box-shadow:inset 0 0 0 1px rgba(43,245,198,.18),0 24px 60px -34px rgba(10,143,108,.6);
  display:grid;
  gap:24px;
  align-items:center;
}
@media (min-width:900px){
  .cta-band{grid-template-columns:1fr auto;padding:52px 48px;gap:40px;}
}
.cta-band h2{color:#fff;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.76);margin:0;font-size:15.5px;max-width:60ch;}
.cta-band .cta-note{
  margin-top:14px;
  font-size:13px;
  color:rgba(255,255,255,.55);
  display:flex;
  align-items:center;
  gap:8px;
}
.cta-band .cta-note svg{width:16px;height:16px;fill:none;stroke:var(--neon);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.cta-band::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--grad-brand);
  animation:breathe 3s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:.35;}50%{opacity:1;}}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:88px;
  padding:60px 0 0;
  background:var(--grad-ink);
  color:rgba(255,255,255,.6);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(43,245,198,.7),transparent);
}
.footer-grid{
  display:grid;
  gap:36px;
  grid-template-columns:1fr;
  padding-bottom:44px;
}
@media (min-width:640px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (min-width:1024px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{
  color:rgba(255,255,255,.6);
  font-size:14.5px;
  line-height:1.8;
  margin-bottom:16px;
  max-width:34ch;
}
.footer-contact{display:grid;gap:6px;font-size:14px;color:rgba(255,255,255,.55);}
.footer-contact a{color:rgba(255,255,255,.78);}
.footer-contact a:hover{color:var(--neon);}
.footer-col h4{
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  margin-bottom:14px;
}
.footer-col a{
  display:block;
  padding:7px 0;
  font-size:14px;
  color:rgba(255,255,255,.6);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
  justify-content:space-between;
  align-items:center;
  padding:18px 0 22px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;
  color:rgba(255,255,255,.5);
}
@media (max-width:639px){
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}