/* roulang page: index */
:root{
  --ink-900:#101216;
  --ink-700:#3C4147;
  --ink-500:#6E7378;
  --line:#E6E4DD;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-alt:#F1EFE9;
  --accent:#C6F24E;
  --accent-on:#101216;
  --accent-2:#0E6E5C;
  --danger:#D8503C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-input:8px;
  --shadow-1:0 1px 2px rgba(16,18,22,.06), 0 8px 24px -12px rgba(16,18,22,.12);
  --shadow-2:0 2px 4px rgba(16,18,22,.08), 0 16px 34px -14px rgba(16,18,22,.22);
  --sidebar-w:260px;
  --maxw:1160px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink-900);color:#fff;padding:10px 16px;z-index:200}
.skip-link:focus{left:12px;top:12px}

/* ---------- 布局骨架 ---------- */
.layout{min-height:100vh}
.side-nav{
  position:fixed;
  left:0;top:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--ink-900);
  color:#EDEBE4;
  display:flex;
  flex-direction:column;
  z-index:80;
}
.side-nav__inner{
  display:flex;flex-direction:column;
  height:100%;
  overflow-y:auto;
  padding:26px 20px 22px;
  gap:22px;
}
.brand{display:flex;align-items:center;gap:10px}
.brand__mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  background:var(--accent);color:var(--accent-on);
  display:grid;place-items:center;
  font-weight:800;font-size:14px;letter-spacing:.02em;
}
.brand__name{display:flex;flex-direction:column;line-height:1.25}
.brand__name b{font-size:14.5px;font-weight:800;color:#fff;letter-spacing:.01em}
.brand__name span{font-size:11.5px;color:#9BA0A6;letter-spacing:.08em}
.side-divider{height:1px;background:rgba(255,255,255,.10)}
.nav-group__title{
  font-size:11.5px;letter-spacing:.14em;color:#8B9096;
  text-transform:uppercase;margin:0 0 10px 10px;
}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;
  display:flex;align-items:center;
  min-height:44px;
  padding:9px 12px;
  border-radius:10px;
  font-size:14.5px;
  color:#C7CACD;
  transition:color 240ms var(--ease),background 240ms var(--ease),transform 240ms var(--ease);
}
.nav-link::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;
  width:3px;border-radius:3px;background:transparent;
  transition:background 240ms var(--ease);
}
.nav-link:hover{color:#fff;transform:translateX(2px)}
.nav-link:hover::before{background:rgba(198,242,78,.5)}
.nav-link.is-active{background:var(--surface-alt);color:var(--ink-900);font-weight:700}
.nav-link.is-active::before{background:var(--accent)}
.nav-hint{
  font-size:12.5px;line-height:1.7;color:#868B91;
  padding:12px;border:1px dashed rgba(255,255,255,.16);border-radius:12px;
}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:8px}
.side-meta{font-size:11.5px;color:#7E838A;line-height:1.7}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;z-index:90;
  background:rgba(16,18,22,.96);
  border-bottom:1px solid rgba(255,255,255,.08);
  align-items:center;justify-content:space-between;
  padding:0 16px;
}
.topbar .brand__name b{font-size:13.5px}
.burger{
  width:44px;height:44px;display:grid;place-items:center;gap:5px;align-content:center;
  border-radius:10px;
}
.burger span{display:block;width:20px;height:2px;background:#F4F2EC;border-radius:2px;transition:transform 240ms var(--ease),opacity 240ms var(--ease)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,18,22,.5);
  opacity:0;visibility:hidden;transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
  z-index:85;
}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
body.drawer-open{overflow:hidden}

/* ---------- 内容区 ---------- */
.content{margin-left:var(--sidebar-w)}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px}
.section{padding:104px 0}
.section--tight{padding:80px 0}
.section--alt{background:var(--surface-alt)}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section__title{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.25;color:var(--ink-900);letter-spacing:-.01em}
.section__desc{margin-top:12px;max-width:680px;color:var(--ink-500);font-size:15.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.04em;font-weight:700;
  color:var(--accent-2);
}
.eyebrow::before{content:"";width:16px;height:2px;background:var(--accent-2);display:block}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:700;
  transition:transform 240ms var(--ease),background 240ms var(--ease),color 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.btn--primary{background:var(--accent);color:var(--accent-on);box-shadow:var(--shadow-1)}
.btn--primary:hover{background:var(--ink-900);color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--ghost{border:1px solid var(--ink-900);color:var(--ink-900)}
.btn--ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn--light{border:1px solid rgba(255,255,255,.42);color:#F4F2EC}
.btn--light:hover{background:#F4F2EC;color:var(--ink-900);transform:translateY(-1px)}
.btn--sm{min-height:40px;padding:0 16px;font-size:13.5px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink-900);
  border-bottom:2px solid transparent;
  transition:border-color 240ms var(--ease),color 240ms var(--ease);
}
.link-arrow svg{transition:transform 240ms var(--ease)}
.link-arrow:hover{border-color:var(--accent);color:var(--accent-2)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--surface);border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  opacity:.14;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(to right,rgba(16,18,22,.06) 1px,transparent 1px),linear-gradient(to bottom,rgba(16,18,22,.06) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.5;
  pointer-events:none;
}
.hero__inner{position:relative;z-index:2;padding:96px 0 88px}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface-alt);border:1px solid var(--line);
  color:var(--accent-2);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
  padding:6px 14px;border-radius:999px;
}
.hero__badge i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.hero__title{
  margin:22px 0 0;
  font-size:clamp(30px,3.4vw,44px);
  font-weight:700;line-height:1.15;
  color:var(--ink-900);letter-spacing:-.02em;
}
.hero__lead{margin-top:20px;font-size:16.5px;color:var(--ink-500);max-width:560px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1px;margin-top:44px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
.stat{background:var(--surface);padding:18px 18px 20px}
.stat__num{font-size:22px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em}
.stat__label{margin-top:4px;font-size:13px;color:var(--ink-500);line-height:1.6}
.hero__media{position:relative}
.hero__media::before{
  content:"";position:absolute;inset:-18px -18px 26px 26px;
  border:1px solid var(--line);border-radius:18px;
}
.hero__img{
  position:relative;border-radius:16px;overflow:hidden;
  box-shadow:var(--shadow-2);aspect-ratio:4/3;background:var(--surface-alt);
}
.hero__img img{width:100%;height:100%;object-fit:cover}
.hero__tag{
  position:absolute;right:16px;bottom:16px;z-index:3;
  background:var(--accent);color:var(--accent-on);
  font-size:12.5px;font-weight:800;letter-spacing:.02em;
  padding:8px 14px;border-radius:999px;
}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:34px}
.step{position:relative;padding-top:26px}
.step::before{content:"";position:absolute;top:0;left:0;width:100%;height:2px;background:var(--accent)}
.step__num{
  font-size:44px;font-weight:800;line-height:1;letter-spacing:-.03em;
  color:transparent;-webkit-text-stroke:1.4px var(--ink-900);
}
.step__title{margin-top:16px;font-size:20px;font-weight:700;color:var(--ink-900)}
.step__text{margin-top:10px;font-size:15px;color:var(--ink-500)}

/* ---------- 证明区 ---------- */
.proof{display:grid;grid-template-columns:.72fr 1.28fr;gap:0;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);overflow:hidden}
.proof__bars{padding:30px 28px;display:flex;flex-direction:column;gap:22px;border-right:1px dashed var(--line)}
.bar__top{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.bar__label{font-size:13.5px;color:var(--ink-500)}
.bar__value{font-size:22px;font-weight:800;color:var(--ink-900)}
.bar__track{margin-top:10px;height:6px;border-radius:999px;background:var(--surface-alt);overflow:hidden}
.bar__fill{height:100%;border-radius:999px;background:var(--accent-2)}
.proof__quote{padding:34px 34px 30px;background:var(--surface)}
.proof__quote blockquote{
  font-size:19px;line-height:1.8;color:var(--ink-900);font-weight:600;
  padding-left:18px;border-left:3px solid var(--accent);
}
.proof__cite{margin-top:18px;font-size:13.5px;color:var(--ink-500)}
.proof__points{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px}
.point{
  border:1px solid var(--line);border-radius:12px;padding:14px 16px;
  background:var(--bg);font-size:14px;color:var(--ink-700);
}
.point b{display:block;color:var(--ink-900);font-size:14.5px;margin-bottom:4px}

/* ---------- 信息列表（CMS） ---------- */
.list{border-top:1px solid var(--line)}
.list__item{
  display:grid;grid-template-columns:172px 1fr auto;gap:24px;align-items:center;
  padding:22px 18px;border-bottom:1px solid var(--line);
  transition:background 240ms var(--ease);
}
.list__item:hover{background:var(--surface-alt)}
.list__thumb{aspect-ratio:16/9;border-radius:var(--radius-img);overflow:hidden;background:var(--surface-alt)}
.list__thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.list__item:hover .list__thumb img{transform:scale(1.03)}
.list__title{font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.5}
.list__desc{margin-top:6px;font-size:14px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list__meta{display:flex;align-items:center;gap:12px;margin-top:10px;font-size:13px;color:var(--ink-500)}
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
  background:var(--surface-alt);color:var(--accent-2);
}
.badge--accent{background:var(--accent);color:var(--accent-on)}
.list__go{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-900);transition:background 240ms var(--ease),transform 240ms var(--ease),border-color 240ms var(--ease)}
.list__item:hover .list__go{background:var(--accent);border-color:var(--accent);transform:translateX(4px)}
.empty-state{text-align:center;padding:64px 20px;border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--surface)}
.empty-state p{color:var(--ink-500);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{
  width:100%;display:flex;align-items:center;gap:18px;
  min-height:64px;padding:14px 6px;text-align:left;
  font-size:16.5px;font-weight:700;color:var(--ink-900);
}
.faq__idx{font-size:13px;font-weight:800;color:var(--accent-2);letter-spacing:.06em;flex:0 0 28px}
.faq__icon{
  margin-left:auto;flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  font-size:15px;line-height:1;color:var(--ink-900);
  transition:transform 200ms var(--ease),background 200ms var(--ease),border-color 200ms var(--ease);
}
.faq__item.is-open .faq__icon{transform:rotate(45deg);background:var(--accent);border-color:var(--accent)}
.faq__panel{overflow:hidden;max-height:0;transition:max-height 200ms var(--ease)}
.faq__a{
  background:var(--surface-alt);border-radius:12px;
  padding:20px;margin:0 6px 18px;font-size:15px;color:var(--ink-700);
}

/* ---------- 深色 CTA ---------- */
.cta-band{position:relative;background:var(--ink-900);color:#F4F2EC;overflow:hidden;border-radius:18px}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.14;
}
.cta-band__inner{position:relative;z-index:2;padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band__title{font-size:clamp(22px,2.2vw,28px);font-weight:700;color:#fff;letter-spacing:-.01em}
.cta-band__text{margin-top:10px;font-size:15px;color:#B9BDC2;max-width:640px}
.cta-band__note{margin-top:14px;font-size:12.5px;color:#8B9096}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink-900);color:#C7CACD;padding:72px 0 0;margin-top:0}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:38px}
.footer__title{font-size:13.5px;font-weight:800;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.footer__text{font-size:13.5px;line-height:1.9;color:#9BA0A6}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__link{font-size:14px;color:#C7CACD;transition:color 240ms var(--ease)}
.footer__link:hover{color:var(--accent)}
.footer__bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#7E838A;
}
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:var(--ink-900);color:var(--accent);
  display:grid;place-items:center;
  box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease),visibility 240ms var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--accent);color:var(--accent-on)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 600ms var(--ease),transform 600ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sidebar-w:232px}
  .container{padding:0 26px}
  .hero__grid{gap:40px}
}
@media (max-width:1023px){
  :root{--sidebar-w:0px}
  .side-nav{
    width:82%;max-width:340px;
    transform:translateX(-100%);
    transition:transform 260ms var(--ease);
    box-shadow:var(--shadow-2);
  }
  body.drawer-open .side-nav{transform:translateX(0)}
  .topbar{display:flex}
  .content{margin-left:0;padding-top:60px}
  .section{padding:72px 0}
  .hero__inner{padding:64px 0 56px}
  .hero__grid{grid-template-columns:1fr;gap:40px}
  .hero__media::before{display:none}
  .steps{grid-template-columns:1fr;gap:28px}
  .proof{grid-template-columns:1fr}
  .proof__bars{border-right:0;border-bottom:1px dashed var(--line)}
  .cta-band__inner{padding:40px 28px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .hero__stats{grid-template-columns:1fr}
  .list__item{grid-template-columns:1fr;gap:14px;padding:20px 12px}
  .list__thumb{max-width:220px}
  .list__go{display:none}
  .proof__points{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .section__head{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .hero__actions .btn{width:100%}
  .btn{width:100%}
  .cta-band__inner{flex-direction:column;align-items:flex-start}
  .brand__name span{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink-900:#101216;
  --ink-700:#3C4147;
  --ink-500:#6E7378;
  --line:#E6E4DD;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-alt:#F1EFE9;
  --accent:#C6F24E;
  --accent-on:#101216;
  --accent-2:#0E6E5C;
  --danger:#D8503C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-input:8px;
  --shadow-1:0 1px 2px rgba(16,18,22,.06),0 8px 24px -12px rgba(16,18,22,.12);
  --shadow-2:0 2px 4px rgba(16,18,22,.08),0 18px 40px -18px rgba(16,18,22,.22);
  --sidebar-w:260px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink-900);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:99}
.skip:focus{left:0}

/* ---------- 布局骨架 ---------- */
.shell{display:flex;align-items:flex-start;min-height:100vh}
.sidebar{
  width:var(--sidebar-w);
  flex:0 0 var(--sidebar-w);
  position:sticky;
  top:0;
  height:100vh;
  display:flex;
  flex-direction:column;
  gap:26px;
  padding:28px 22px 24px;
  background:var(--surface);
  border-right:1px solid var(--line);
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px}
.brand__mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;
  background:var(--ink-900);color:var(--accent);
  font-size:12.5px;font-weight:800;letter-spacing:.06em;
}
.brand__name{display:flex;flex-direction:column;line-height:1.2}
.brand__name b{font-size:15px;color:var(--ink-900);font-weight:800;letter-spacing:-.01em}
.brand__name span{font-size:12px;color:var(--ink-500);letter-spacing:.04em}
.nav-group{display:flex;flex-direction:column;gap:10px}
.nav-group__title{
  font-size:12.5px;letter-spacing:.08em;color:var(--ink-500);
  text-transform:uppercase;padding-left:10px;
}
.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-link{
  position:relative;
  display:flex;align-items:center;
  min-height:44px;
  padding:10px 12px 10px 14px;
  border-radius:10px;
  font-size:14.5px;color:var(--ink-700);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--accent);border-radius:2px;
  transition:height .24s var(--ease);
}
.nav-link:hover{background:var(--surface-alt);color:var(--ink-900);transform:translateX(2px)}
.nav-link:hover::before{height:18px}
.nav-link.is-active{background:var(--surface-alt);color:var(--ink-900);font-weight:700}
.nav-link.is-active::before{height:22px}
.sidebar__foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.sidebar__copy{font-size:12px;color:var(--ink-500);line-height:1.7}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 20px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:700;letter-spacing:.01em;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.btn--primary{background:var(--accent);color:var(--accent-on);box-shadow:var(--shadow-1)}
.btn--primary:hover{background:var(--ink-900);color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--ghost{border:1px solid var(--ink-900);color:var(--ink-900);background:transparent}
.btn--ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn--block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;color:var(--accent-2);font-size:14.5px;
}
.link-arrow span{transition:transform .24s var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:40;
  height:60px;padding:0 16px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
}
.burger{width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.burger i{display:block;width:20px;height:2px;background:var(--ink-900);border-radius:2px}
.overlay{
  display:none;position:fixed;inset:0;background:rgba(16,18,22,.5);z-index:50;
  opacity:0;transition:opacity .2s var(--ease);
}
.overlay.is-open{display:block;opacity:1}

/* ---------- 主区域 ---------- */
.main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 28px}
.progress{
  position:fixed;top:0;left:0;height:3px;width:100%;
  background:var(--accent);transform:scaleX(0);transform-origin:0 50%;
  z-index:60;transition:transform .1s linear;
}

/* ---------- 页面头部 ---------- */
.page-head{
  background:
    linear-gradient(180deg,rgba(247,246,242,.4),rgba(247,246,242,.94)),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
  padding:36px 0 42px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:22px}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--accent-2)}
.breadcrumb .sep{color:var(--line)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:16px}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  background:var(--surface-alt);color:var(--accent-2);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
}
.badge--accent{background:var(--accent);color:var(--accent-on)}
.meta-text{font-size:13.5px;color:var(--ink-500)}
.article-title{
  font-size:clamp(30px,3.4vw,44px);
  font-weight:700;line-height:1.15;letter-spacing:-.02em;
  color:var(--ink-900);max-width:22ch;
}
.page-head__lead{margin-top:16px;max-width:64ch;font-size:15.5px;color:var(--ink-700)}

/* ---------- 正文布局 ---------- */
.content-wrap{padding:52px 0 84px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:52px;align-items:start}
.prose{max-width:720px;font-size:17px;line-height:1.9;color:var(--ink-700)}
.prose p{margin:0 0 1.2em}
.prose h2{
  position:relative;
  font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.25;
  color:var(--ink-900);margin:2.4em 0 .9em;padding-left:20px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.28em;
  width:4px;height:20px;background:var(--accent);border-radius:2px;
}
.prose h3{font-size:20px;font-weight:700;color:var(--ink-900);margin:2em 0 .7em}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.2em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin:.4em 0}
.prose a{color:var(--accent-2);text-decoration:underline;text-underline-offset:3px}
.prose blockquote{
  margin:1.6em 0;padding:18px 22px;
  border-left:3px solid var(--accent-2);
  background:var(--surface-alt);border-radius:12px;color:var(--ink-700);
}
.prose img{border-radius:var(--radius-img);margin:1.6em 0;box-shadow:var(--shadow-1)}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:13px;color:var(--ink-500);margin-top:8px;text-align:center}
.prose table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.prose th,.prose td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.prose th{background:var(--surface-alt);color:var(--ink-900);font-weight:700}
.prose tbody tr:nth-child(even){background:#FBFAF7}
.prose code{background:var(--surface-alt);padding:2px 6px;border-radius:6px;font-size:14px}

/* ---------- 侧栏卡片 ---------- */
.article-side{display:flex;flex-direction:column;gap:18px;position:sticky;top:24px}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);
}
.side-card__title{font-size:14px;font-weight:800;color:var(--ink-900);letter-spacing:.04em;margin-bottom:14px}
.toc{display:flex;flex-direction:column;gap:6px}
.toc a{
  display:block;font-size:13.5px;color:var(--ink-700);
  padding:6px 0 6px 12px;border-left:2px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc a:hover{color:var(--accent-2);border-color:var(--accent)}
.side-cta{background:var(--ink-900);border-color:var(--ink-900);color:#EDECE7}
.side-cta .side-card__title{color:#fff}
.side-cta p{font-size:13.5px;color:#B9B8B2;margin-bottom:16px}
.side-list{display:flex;flex-direction:column;gap:10px}
.side-list li{font-size:13.5px;color:var(--ink-700);padding-left:16px;position:relative}
.side-list li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:6px;height:6px;border-radius:50%;background:var(--accent);
}

/* ---------- 空态 ---------- */
.empty{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  background:var(--surface);padding:56px 28px;text-align:center;
  max-width:720px;
}
.empty__mark{
  width:52px;height:52px;border-radius:50%;margin:0 auto 18px;
  background:var(--surface-alt);display:flex;align-items:center;justify-content:center;
  font-weight:800;color:var(--accent-2);font-size:15px;
}
.empty h2{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.empty p{font-size:14.5px;color:var(--ink-500);margin-bottom:20px}

/* ---------- 相关推荐 ---------- */
.section{padding:0 0 72px}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px}
.section__title{font-size:clamp(20px,2vw,26px);font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
.section__sub{font-size:13.5px;color:var(--ink-500);margin-top:6px}
.post-list{border-top:1px solid var(--line)}
.post-row{
  display:grid;grid-template-columns:132px minmax(0,1fr) 32px;
  gap:22px;align-items:center;
  padding:20px 14px 20px 0;
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease);
}
.post-row:hover{background:var(--surface-alt)}
.post-row__thumb{
  aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:var(--surface-alt);
}
.post-row__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-row:hover .post-row__thumb img{transform:scale(1.03)}
.post-row__title{font-size:17px;font-weight:700;color:var(--ink-900);margin-bottom:6px}
.post-row__desc{font-size:14px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-row__meta{display:flex;align-items:center;gap:12px;margin-top:10px;font-size:12.5px;color:var(--ink-500)}
.post-row__arrow{font-size:18px;color:var(--ink-500);transition:transform .24s var(--ease),color .24s var(--ease)}
.post-row:hover .post-row__arrow{transform:translateX(4px);color:var(--accent-2)}

/* ---------- 上下篇 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:8px}
.post-nav__item{
  display:flex;flex-direction:column;gap:6px;
  padding:22px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.post-nav__item:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.post-nav__item span{font-size:12.5px;color:var(--ink-500);letter-spacing:.04em}
.post-nav__item strong{font-size:15.5px;color:var(--ink-900)}
.post-nav__item--next{text-align:right}
.back-cat{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-size:14.5px;font-weight:700;color:var(--ink-900)}
.back-cat:hover{color:var(--accent-2)}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:auto;background:var(--ink-900);color:#DEDCD5;
  padding:64px 0 26px;
}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer__title{font-size:13px;letter-spacing:.08em;color:#fff;font-weight:800;margin-bottom:16px}
.footer__text{font-size:13.5px;color:#A9A8A2;line-height:1.85}
.footer .brand__mark{background:var(--accent);color:var(--ink-900)}
.footer .brand__name b{color:#fff}
.footer .brand__name span{color:#A9A8A2}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__link{font-size:14px;color:#DEDCD5;transition:color .24s var(--ease),transform .24s var(--ease)}
.footer__link:hover{color:var(--accent)}
.footer__bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#8E8D87;
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sidebar-w:232px}
  .article-layout{grid-template-columns:minmax(0,1fr) 232px;gap:40px}
}
@media (max-width:1023px){
  .sidebar{
    position:fixed;left:0;top:0;z-index:60;
    width:82%;max-width:340px;height:100vh;
    transform:translateX(-100%);transition:transform .28s var(--ease);
    box-shadow:var(--shadow-2);
  }
  .sidebar.is-open{transform:none}
  .topbar{display:flex}
  .shell{display:block}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:30px}
  .article-side{position:static;order:2}
  .prose{max-width:none}
  .content-wrap{padding:36px 0 60px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .page-head{padding:26px 0 30px}
  .post-row{grid-template-columns:minmax(0,1fr) 24px;gap:14px}
  .post-row__thumb{display:none}
  .post-nav{grid-template-columns:1fr}
  .post-nav__item--next{text-align:left}
  .footer__grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  .btn{width:100%}
  .post-nav__item{padding:18px}
  .side-card{padding:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink-900:#101216;
  --ink-700:#3C4147;
  --ink-500:#6E7378;
  --line:#E6E4DD;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-alt:#F1EFE9;
  --accent:#C6F24E;
  --accent-on:#101216;
  --accent-2:#0E6E5C;
  --danger:#D8503C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-1:0 1px 2px rgba(16,18,22,.06),0 8px 24px -12px rgba(16,18,22,.12);
  --shadow-2:0 2px 4px rgba(16,18,22,.08),0 16px 40px -16px rgba(16,18,22,.2);
  --nav-w:260px;
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.25;letter-spacing:-.01em}
h1{font-size:clamp(30px,3.4vw,44px);line-height:1.15}
h2{font-size:clamp(24px,2.4vw,32px)}
h3{font-size:20px}
p{margin:0}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd{margin:0}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

/* ---------- 布局骨架 ---------- */
.layout{min-width:0}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 24px}
.main{min-width:0}

/* ---------- 侧栏 / 导航 ---------- */
.sidebar{
  position:fixed;
  top:0;right:0;bottom:0;
  width:82%;
  max-width:340px;
  background:var(--surface);
  border-left:1px solid var(--line);
  padding:24px 20px;
  display:flex;
  flex-direction:column;
  gap:22px;
  overflow-y:auto;
  transform:translateX(101%);
  transition:transform .3s cubic-bezier(.2,.7,.2,1);
  z-index:60;
  box-shadow:-8px 0 32px -20px rgba(16,18,22,.3);
}
.sidebar.is-open{transform:none}
.sidebar__close{
  align-self:flex-end;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--ink-900);
}
.sidebar__close:hover{background:var(--surface-alt)}

.brand{display:flex;align-items:center;gap:12px}
.brand__mark{
  width:42px;height:42px;flex:none;
  border-radius:12px;
  background:var(--ink-900);
  color:var(--accent);
  display:grid;place-items:center;
  font-size:13px;font-weight:800;letter-spacing:.06em;
}
.brand__name{display:flex;flex-direction:column;font-size:12.5px;color:var(--ink-500);line-height:1.35}
.brand__name b{font-size:15px;color:var(--ink-900);letter-spacing:-.01em}

.nav-group__title{
  font-size:12.5px;letter-spacing:.14em;color:var(--ink-500);
  margin-bottom:12px;font-weight:600;
}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  position:relative;
  display:flex;align-items:center;
  min-height:44px;
  padding:0 14px 0 18px;
  border-radius:10px;
  font-size:15px;
  color:var(--ink-700);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-link:hover{background:var(--surface-alt);color:var(--ink-900);transform:translateX(2px)}
.nav-link.is-active{background:var(--surface-alt);color:var(--ink-900);font-weight:700}
.nav-link.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:999px;background:var(--accent);
}
.sidebar__foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.sidebar__note{font-size:12.5px;color:var(--ink-500);line-height:1.6}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:55;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:12px 18px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar .brand__mark{width:36px;height:36px;border-radius:10px;font-size:12px}
.topbar .brand__name b{font-size:14px}
.hamburger{
  width:44px;height:44px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);border-radius:10px;
  transition:background .2s ease;
}
.hamburger:hover{background:var(--surface-alt)}
.hamburger span{display:block;width:20px;height:2px;background:var(--ink-900);border-radius:2px}
.scrim{
  position:fixed;inset:0;background:rgba(16,18,22,.5);
  opacity:0;visibility:hidden;transition:opacity .3s ease;
  z-index:58;
}
.scrim.is-on{opacity:1;visibility:visible}
body.nav-open{overflow:hidden}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn--primary{background:var(--accent);color:var(--accent-on)}
.btn--primary:hover{background:var(--ink-900);color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--ghost{border-color:var(--ink-900);color:var(--ink-900)}
.btn--ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn--on-dark{border-color:rgba(255,255,255,.42);color:#fff}
.btn--on-dark:hover{background:#fff;color:var(--ink-900);border-color:#fff;transform:translateY(-1px)}
.btn--block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--surface-alt);color:var(--accent-2);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
}
.badge--accent{background:var(--accent);color:var(--accent-on)}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:#fff;
  padding:76px 0 64px;
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  opacity:.14;
}
.page-hero__grid{
  position:absolute;inset:0;z-index:1;
  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:64px 64px;
}
.page-hero .container{position:relative;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(198,242,78,.34);
  color:var(--accent);
  font-size:12.5px;letter-spacing:.1em;font-weight:600;
}
.page-hero h1{color:#fff;margin:20px 0 16px}
.page-hero__lead{max-width:660px;color:rgba(255,255,255,.78);font-size:17px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:36px;
  margin-top:38px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-facts dt{font-size:20px;font-weight:800;color:#fff;letter-spacing:-.02em}
.hero-facts dd{font-size:13px;color:rgba(255,255,255,.62);margin-top:2px}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section--tight{padding-top:0}
.section--alt{background:var(--surface)}
.section--dark{background:var(--ink-900);color:rgba(255,255,255,.78)}
.section__head{max-width:760px;margin-bottom:44px}
.section__head h2{margin-bottom:14px}
.section__head p{color:var(--ink-500);font-size:16px}
.section--dark .section__head h2{color:#fff}
.section--dark .section__head p{color:rgba(255,255,255,.66)}

.split{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start}
.duo{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:stretch}

/* ---------- 编号清单 ---------- */
.check-list{border-top:1px solid var(--line)}
.check-item{
  display:grid;grid-template-columns:66px minmax(0,1fr);
  gap:22px;padding:28px 0;
  border-bottom:1px solid var(--line);
  transition:background .25s ease;
}
.check-item:hover{background:rgba(241,239,233,.55)}
.check-item__num{
  font-size:28px;font-weight:800;color:var(--accent-2);
  letter-spacing:-.02em;line-height:1.2;
  position:relative;
}
.check-item__num::after{
  content:"";position:absolute;left:0;bottom:-6px;width:22px;height:2px;background:var(--accent);
  border-radius:2px;
}
.check-item h3{margin-bottom:8px}
.check-item p{font-size:15.5px;color:var(--ink-500)}

/* ---------- 速览卡 ---------- */
.sticky-card{
  position:sticky;top:44px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-1);
}
.sticky-card__label{font-size:12.5px;letter-spacing:.12em;color:var(--accent-2);font-weight:700;margin-bottom:16px}
.quick-list{display:flex;flex-direction:column;gap:14px;margin-bottom:24px}
.quick-list li{position:relative;padding-left:20px;font-size:15px;color:var(--ink-700)}
.quick-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:2px;
  background:var(--accent);border:1px solid rgba(16,18,22,.16);
}
.sticky-card__note{font-size:12.5px;color:var(--ink-500);margin-top:12px;text-align:center}

/* ---------- 卡片 ---------- */
.info-card{
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.info-card__media{aspect-ratio:16/9;overflow:hidden;background:var(--surface-alt)}
.info-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s cubic-bezier(.2,.7,.2,1)}
.info-card:hover .info-card__media img{transform:scale(1.03)}
.info-card__body{padding:26px;display:flex;flex-direction:column;gap:10px;flex:1}
.info-card__body h3{margin:0}
.info-card__body p{font-size:15px;color:var(--ink-500)}
.info-card__meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-500)}

.notice{
  display:flex;gap:14px;align-items:flex-start;
  margin-top:32px;padding:20px 22px;
  background:var(--surface-alt);
  border-left:3px solid var(--accent);
  border-radius:12px;
  font-size:15px;color:var(--ink-700);
}
.notice strong{color:var(--ink-900)}

/* ---------- 表格 ---------- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  box-shadow:var(--shadow-1);
}
table.compare{width:100%;min-width:660px;font-size:15px}
.compare th,.compare td{padding:18px 22px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.compare thead th{background:var(--surface-alt);font-size:13px;letter-spacing:.06em;color:var(--ink-900)}
.compare tbody tr:nth-child(even){background:#FBFBF8}
.compare tbody tr:last-child td{border-bottom:0}
.compare td:first-child{font-weight:700;color:var(--ink-900);width:28%}
.compare td:last-child{color:var(--accent-2)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{
  display:flex;align-items:center;gap:16px;
  width:100%;min-height:64px;padding:16px 4px;
  text-align:left;font-size:17px;font-weight:700;color:var(--ink-900);
  transition:color .2s ease;
}
.faq__q:hover{color:var(--accent-2)}
.faq__no{font-size:13px;font-weight:800;color:var(--accent-2);min-width:26px;letter-spacing:.04em}
.faq__icon{position:relative;margin-left:auto;width:18px;height:18px;flex:none}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-900);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq__icon::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq__icon::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq__item.is-open .faq__icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq__a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq__item.is-open .faq__a{max-height:520px}
.faq__a-inner{
  margin:0 0 22px;padding:20px 22px;
  background:var(--surface-alt);
  border-radius:12px;
  font-size:15.5px;color:var(--ink-700);
}

/* ---------- CTA ---------- */
.cta{padding:0 0 96px}
.cta__box{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  padding:52px 48px;
  border-radius:20px;
  background:var(--ink-900);
  color:#fff;
}
.cta__box__bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
  opacity:.12;
}
.cta__content{position:relative;z-index:2;max-width:620px}
.cta__content h2{color:#fff;margin-bottom:12px}
.cta__content p{color:rgba(255,255,255,.7);font-size:15px}
.cta__actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:72px 0 24px}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer__col{min-width:0}
.footer .brand__mark{background:rgba(255,255,255,.08);color:var(--accent)}
.footer .brand__name{color:rgba(255,255,255,.6)}
.footer .brand__name b{color:#fff}
.footer__title{font-size:13px;letter-spacing:.12em;color:#fff;font-weight:700;margin-bottom:16px}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__link{font-size:14.5px;transition:color .2s ease,transform .2s ease}
.footer__link:hover{color:var(--accent);transform:translateX(2px)}
.footer__text{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62)}
.footer__bottom{
  margin-top:48px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:45;
  width:46px;height:46px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--ink-900);color:var(--accent);
  box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--accent);color:var(--accent-on)}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}
.page-hero .reveal:nth-child(2){transition-delay:.06s}
.page-hero .reveal:nth-child(3){transition-delay:.12s}
.page-hero .reveal:nth-child(4){transition-delay:.18s}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  body{display:grid;grid-template-columns:var(--nav-w) minmax(0,1fr);align-items:start}
  .sidebar{
    position:sticky;left:0;right:auto;top:0;bottom:auto;
    width:auto;max-width:none;height:100vh;
    transform:none;transition:none;
    border-left:0;border-right:1px solid var(--line);
    box-shadow:none;
    padding:26px 20px;
    z-index:auto;
  }
  .sidebar__close{display:none}
  .topbar{display:none}
  .scrim{display:none}
}
@media (min-width:1280px) and (max-width:1439px){:root{--nav-w:232px}}
@media (min-width:1024px) and (max-width:1279px){:root{--nav-w:208px}}
@media (min-width:1440px){:root{--nav-w:260px}}

@media (max-width:1023px){
  .section{padding:72px 0}
  .cta{padding-bottom:72px}
  .split{grid-template-columns:1fr;gap:36px}
  .sticky-card{position:static;top:auto}
  .cta__box{padding:40px 30px}
}
@media (max-width:900px){
  .duo{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .page-hero{padding:56px 0 48px}
  .hero-facts{gap:22px}
  .check-item{grid-template-columns:46px minmax(0,1fr);gap:14px;padding:22px 0}
  .check-item__num{font-size:22px}
  .cta__box{padding:34px 22px;border-radius:16px}
  .footer{padding:56px 0 20px}
  .footer__grid{grid-template-columns:1fr}
  .faq__q{font-size:16px;gap:12px}
}
@media (max-width:480px){
  .hero-actions .btn,.cta__actions .btn{width:100%}
  .hero-facts{flex-direction:column;gap:16px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink-900:#101216;
  --ink-700:#3C4147;
  --ink-500:#6E7378;
  --line:#E6E4DD;
  --line-soft:#DEDCD5;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-alt:#F1EFE9;
  --accent:#C6F24E;
  --accent-on:#101216;
  --accent-2:#0E6E5C;
  --danger:#D8503C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-input:8px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,18,22,.06),0 8px 24px -12px rgba(16,18,22,.12);
  --shadow-2:0 2px 4px rgba(16,18,22,.08),0 18px 34px -14px rgba(16,18,22,.20);
  --nav-w:260px;
  --top-h:60px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 品牌 ---------- */
.brand{display:flex;align-items:center;gap:10px}
.brand__mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;
  background:var(--accent);color:var(--accent-on);
  font-size:13px;font-weight:800;letter-spacing:.06em;
}
.brand__name{display:flex;flex-direction:column;line-height:1.25}
.brand__name b{font-size:15px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em}
.brand__name span{font-size:12px;color:var(--ink-500);letter-spacing:.04em}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--surface);border-right:1px solid var(--line);
  padding:24px 20px 18px;display:flex;flex-direction:column;gap:22px;
  overflow-y:auto;z-index:40;
}
.nav-group__title{
  font-size:12.5px;letter-spacing:.08em;color:var(--ink-500);
  margin-bottom:10px;font-weight:700;
}
.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-link{
  position:relative;display:flex;align-items:center;
  min-height:44px;padding:10px 12px 10px 14px;border-radius:10px;
  font-size:14.5px;color:var(--ink-700);
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--accent);border-radius:2px;
  transition:height .24s var(--ease);
}
.nav-link:hover{background:var(--surface-alt);color:var(--ink-900);transform:translateX(2px)}
.nav-link.is-active{background:var(--surface-alt);color:var(--ink-900);font-weight:700}
.nav-link.is-active::before{height:22px}
.side-cta{
  margin-top:auto;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px;background:var(--surface-alt);
}
.side-cta__text{font-size:13.5px;color:var(--ink-700);margin-bottom:12px;line-height:1.7}
.side-foot{font-size:12px;color:var(--ink-500);line-height:1.7}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--top-h);
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);z-index:45;
}
.hamburger{
  width:44px;height:44px;display:inline-flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;border-radius:10px;
}
.hamburger span{display:block;width:20px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,18,22,.5);
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);z-index:55;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;
  background:var(--surface);padding:22px 20px;overflow-y:auto;z-index:60;
  transform:translateX(101%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:20px;
}
.drawer.is-open{transform:translateX(0)}

/* ---------- 主区域 ---------- */
.main,.footer{margin-left:var(--nav-w)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn--primary{background:var(--accent);color:var(--accent-on);border-color:var(--accent)}
.btn--primary:hover{background:var(--ink-900);color:var(--accent);border-color:var(--ink-900);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn--ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn--light{background:#fff;color:var(--ink-900);border-color:#fff}
.btn--light:hover{background:var(--accent);color:var(--accent-on);border-color:var(--accent);transform:translateY(-1px)}
.btn--block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;color:var(--accent-2)}
.link-arrow i{font-style:normal;transition:transform .24s var(--ease)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
}
.badge--soft{background:var(--surface-alt);color:var(--accent-2)}
.badge--accent{background:var(--accent);color:var(--accent-on)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background-image:linear-gradient(rgba(247,246,242,.94),rgba(247,246,242,.97)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:88px 0 72px;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(16,18,22,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(16,18,22,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(to bottom,transparent,#000 30%,#000 70%,transparent);
}
.hero__inner{position:relative;z-index:2;max-width:820px}
.hero__title{
  margin:18px 0 16px;
  font-size:clamp(30px,3.4vw,44px);font-weight:800;line-height:1.15;
  letter-spacing:-.02em;color:var(--ink-900);
}
.hero__lead{font-size:17px;color:var(--ink-700);max-width:660px}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero__facts{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;
}
.hero__facts li{
  flex:1 1 200px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:14px 16px;box-shadow:var(--shadow-1);
}
.hero__facts b{display:block;font-size:20px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em}
.hero__facts span{font-size:13.5px;color:var(--ink-500)}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--surface-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{max-width:720px;margin-bottom:44px}
.section__title{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.25;letter-spacing:-.015em;color:var(--ink-900);margin-top:14px}
.section__desc{margin-top:14px;font-size:16px;color:var(--ink-700)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;margin-top:10px}
.timeline::before{
  content:"";position:absolute;left:50%;top:6px;bottom:6px;width:2px;
  background:var(--line);transform:translateX(-1px);
}
.t-step{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:34px 0}
.t-step__dot{
  position:absolute;left:50%;top:38px;width:16px;height:16px;border-radius:50%;
  background:var(--accent);border:3px solid var(--bg);transform:translateX(-50%);
  box-shadow:0 0 0 1px var(--line);z-index:2;
}
.t-step__body{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-1);transition:box-shadow .24s var(--ease),transform .24s var(--ease)}
.t-step__body:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.t-step__no{
  font-size:46px;font-weight:800;line-height:1;letter-spacing:-.03em;
  color:transparent;-webkit-text-stroke:1.4px var(--accent-2);
}
.t-step__title{font-size:20px;font-weight:700;color:var(--ink-900);margin:14px 0 10px}
.t-step__text{font-size:15.5px;color:var(--ink-700)}
.t-step__media{margin:0}
.t-step__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-img);border:1px solid var(--line)}
.t-step__media figcaption{font-size:13px;color:var(--ink-500);margin-top:10px}
.t-step:nth-child(even) .t-step__media{order:-1}
.t-step:nth-child(even) .t-step__body{grid-column:2}

/* ---------- 双列要点卡 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.point-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;display:flex;gap:18px;box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.point-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--ink-500)}
.point-card__no{
  flex:0 0 40px;width:40px;height:40px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  background:var(--surface-alt);color:var(--accent-2);font-size:14px;font-weight:800;
}
.point-card h3{font-size:18px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.point-card p{font-size:15px;color:var(--ink-700)}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  border-left:3px solid var(--accent-2);background:var(--surface);
  border-radius:12px;padding:20px 22px;box-shadow:var(--shadow-1);
  margin-top:34px;
}
.notice__tag{flex:0 0 auto;padding:4px 10px;border-radius:999px;background:var(--surface-alt);color:var(--accent-2);font-size:12.5px;font-weight:700;letter-spacing:.04em}
.notice p{font-size:15px;color:var(--ink-700)}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px}
.faq__item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:border-color .24s var(--ease),box-shadow .24s var(--ease)}
.faq__item.is-open{border-color:var(--ink-500);box-shadow:var(--shadow-1)}
.faq__q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  min-height:64px;padding:14px 22px;font-size:16.5px;font-weight:700;color:var(--ink-900);
}
.faq__q .idx{font-size:13px;font-weight:800;color:var(--accent-2);letter-spacing:.06em;flex:0 0 auto}
.faq__q .txt{flex:1 1 auto}
.faq__q .ico{
  flex:0 0 28px;width:28px;height:28px;border-radius:999px;background:var(--surface-alt);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:var(--ink-900);
  transition:transform .2s var(--ease),background .2s var(--ease);
}
.faq__item.is-open .faq__q .ico{transform:rotate(45deg);background:var(--accent)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .2s var(--ease)}
.faq__a-inner{margin:0 22px 20px;padding:18px 20px;background:var(--surface-alt);border-radius:12px;font-size:15px;color:var(--ink-700)}

/* ---------- CTA 通栏 ---------- */
.band{
  position:relative;background:var(--ink-900);color:#F7F6F2;
  border-radius:0;padding:72px 0;overflow:hidden;
}
.band::before{
  content:"";position:absolute;inset:0;
  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:72px 72px;opacity:.6;
}
.band__inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.band__title{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.25;letter-spacing:-.015em;color:#fff}
.band__text{margin-top:12px;font-size:15.5px;color:rgba(247,246,242,.78);max-width:640px}
.band__note{margin-top:14px;font-size:13px;color:rgba(247,246,242,.6)}
.band__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink-900);color:#E9E8E3;padding:64px 0 26px;margin-top:0}
.footer .brand__name b{color:#fff}
.footer .brand__name span{color:rgba(233,232,227,.6)}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer__title{font-size:13px;letter-spacing:.08em;font-weight:700;color:#fff;margin-bottom:14px}
.footer__text{font-size:14px;color:rgba(233,232,227,.72);line-height:1.9}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__link{font-size:14px;color:rgba(233,232,227,.72);transition:color .24s var(--ease),transform .24s var(--ease);width:fit-content}
.footer__link:hover{color:var(--accent);transform:translateX(2px)}
.footer__bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(233,232,227,.55);
}
.to-top{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:999px;
  background:var(--ink-900);color:var(--accent);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);z-index:50;font-size:16px;
}
.to-top.is-show{opacity:1;pointer-events:auto;transform:translateY(0)}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){:root{--nav-w:232px}}
@media (max-width:1279px){:root{--nav-w:208px}}
@media (max-width:1023px){
  :root{--nav-w:0px}
  .sidenav{display:none}
  .topbar{display:flex}
  body{padding-top:var(--top-h)}
  .hero{padding:64px 0 56px}
  .section{padding:72px 0}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .hero{padding:52px 0 46px}
  .section{padding:56px 0}
  .grid-2{grid-template-columns:1fr}
  .timeline::before{left:9px;transform:none}
  .t-step{grid-template-columns:1fr;gap:16px;padding:22px 0 22px 34px}
  .t-step__dot{left:1px;top:30px;transform:none}
  .t-step:nth-child(even) .t-step__media{order:0}
  .t-step:nth-child(even) .t-step__body{grid-column:auto}
  .footer__grid{grid-template-columns:1fr}
  .band__inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .hero__actions .btn{width:100%}
  .band__actions{width:100%}
  .band__actions .btn{width:100%}
  .brand__name b{font-size:14px}
  .faq__q{padding:12px 16px;font-size:15.5px}
  .faq__a-inner{margin:0 16px 16px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink-900:#101216;
  --ink-700:#3C4147;
  --ink-500:#6E7378;
  --line:#E6E4DD;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --surface-alt:#F1EFE9;
  --accent:#C6F24E;
  --accent-on:#101216;
  --accent-2:#0E6E5C;
  --danger:#D8503C;
  --nav-w:260px;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-input:8px;
  --shadow-1:0 1px 2px rgba(16,18,22,.06),0 8px 24px -12px rgba(16,18,22,.12);
  --shadow-2:0 2px 4px rgba(16,18,22,.07),0 14px 34px -14px rgba(16,18,22,.18);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
figure{margin:0}
h1,h2,h3{margin:0;color:var(--ink-900);letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--accent);color:var(--accent-on)}

.container{width:100%;max-width:1160px;margin:0 auto;padding:0 24px}
.layout{display:flex;min-height:100vh}
.page{margin-left:var(--nav-w);flex:1;min-width:0;display:flex;flex-direction:column}

/* ============ 左侧导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--ink-900);color:#F7F6F2;
  display:flex;flex-direction:column;gap:22px;
  padding:26px 20px 22px;overflow-y:auto;z-index:70;
  transition:transform .3s var(--ease);
}
.brand{display:flex;align-items:center;gap:10px}
.brand__mark{
  flex:none;width:40px;height:40px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--accent);color:var(--accent-on);
  font-size:13px;font-weight:800;letter-spacing:.06em;
}
.brand__name{font-size:14.5px;font-weight:600;line-height:1.4;color:#F7F6F2}
.brand__name b{display:block;font-weight:700}
.nav-group__title{
  font-size:12.5px;letter-spacing:.08em;color:rgba(247,246,242,.5);
  margin:0 0 10px;padding-left:6px;
}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-link{
  display:flex;align-items:center;min-height:44px;
  padding:10px 12px;border-radius:8px;
  border-left:3px solid transparent;
  font-size:14.5px;color:rgba(247,246,242,.74);
  transition:background .22s var(--ease),color .22s var(--ease),padding .22s var(--ease);
}
.nav-link:hover{color:#FFFFFF;background:rgba(247,246,242,.08);padding-left:14px}
.nav-link.is-active{
  background:var(--surface-alt);color:var(--ink-900);
  border-left-color:var(--accent);font-weight:600;
}
.nav-link.is-active:hover{padding-left:12px}
.sidebar__spacer{flex:1 1 auto;min-height:12px}
.sidebar__foot{display:flex;flex-direction:column;gap:12px;padding-top:16px;border-top:1px solid rgba(247,246,242,.14)}
.sidebar__note{font-size:12.5px;line-height:1.7;color:rgba(247,246,242,.5)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn--primary{background:var(--accent);color:var(--accent-on)}
.btn--primary:hover{background:var(--ink-900);color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn--outline{border:1px solid var(--ink-900);color:var(--ink-900);background:transparent}
.btn--outline:hover{background:var(--ink-900);color:#FFFFFF;transform:translateY(-1px)}
.btn--ghost{border:1px solid rgba(247,246,242,.3);color:#F7F6F2}
.btn--ghost:hover{background:var(--accent);color:var(--accent-on);border-color:var(--accent)}
.btn--light{background:#F7F6F2;color:var(--ink-900)}
.btn--light:hover{background:var(--accent);color:var(--accent-on);transform:translateY(-1px)}
.btn--full{width:100%}

/* ============ 移动端顶栏与抽屉 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:80;height:60px;
  align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(247,246,242,.95);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar .brand__mark{width:34px;height:34px;font-size:11.5px}
.topbar .brand__name{font-size:13.5px;color:var(--ink-900)}
.hamburger{
  width:44px;height:44px;border-radius:8px;
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);background:var(--surface);
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,18,22,.5);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:65;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:var(--surface);border-bottom:1px solid var(--line)}
.hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.11;pointer-events:none;
}
.hero__grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(16,18,22,.05) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(16,18,22,.05) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:linear-gradient(90deg,rgba(0,0,0,.9),transparent 78%);
  mask-image:linear-gradient(90deg,rgba(0,0,0,.9),transparent 78%);
}
.hero__inner{position:relative;padding:88px 0 76px;max-width:760px}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--surface-alt);color:var(--accent-2);
  font-size:12.5px;font-weight:600;letter-spacing:.04em;
  margin-bottom:22px;
}
.hero__title{
  font-size:clamp(30px,3.4vw,44px);font-weight:700;line-height:1.15;
  letter-spacing:-.02em;margin-bottom:20px;
}
.hero__lead{font-size:17px;color:var(--ink-700);max-width:620px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero__stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;margin-top:46px;padding-top:26px;border-top:1px solid var(--line);
}
.hero__stat b{display:block;font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:4px}
.hero__stat span{font-size:13.5px;color:var(--ink-500);line-height:1.7}

/* ============ 板块 ============ */
.section{padding:96px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding:56px 0}
.section__head{max-width:720px;margin-bottom:44px}
.eyebrow{
  font-size:12.5px;font-weight:700;letter-spacing:.1em;
  color:var(--accent-2);margin-bottom:12px;
}
.section__title{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.25;margin-bottom:14px}
.section__sub{font-size:16px;color:var(--ink-500)}

/* ============ 图文分栏 ============ */
.split{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.split__media img{border-radius:var(--radius-img);aspect-ratio:4/3;object-fit:cover;box-shadow:var(--shadow-1);width:100%}
.split__media figcaption{font-size:13px;color:var(--ink-500);margin-top:12px}
.split__text h2{font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.25;margin-bottom:16px}
.split__text p{font-size:16.5px;margin-bottom:16px}
.bullet{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.bullet li{position:relative;padding-left:26px;font-size:15.5px;color:var(--ink-700)}
.bullet li::before{
  content:"";position:absolute;left:0;top:11px;
  width:12px;height:2px;background:var(--accent);
}
.bullet li b{color:var(--ink-900)}

/* ============ 提示条 ============ */
.note{
  background:var(--surface-alt);
  border-left:4px solid var(--accent);
  border-radius:12px;padding:22px 26px;
}
.note__title{font-size:16px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.note p{font-size:15.5px;color:var(--ink-700)}

/* ============ 编号清单 ============ */
.checklist{border-top:1px solid var(--line);margin-top:8px}
.check-item{
  display:grid;grid-template-columns:92px minmax(0,1fr);gap:26px;
  padding:30px 0;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.check-item:hover{background:var(--surface-alt)}
.check-item__num{
  font-size:34px;font-weight:800;line-height:1;
  color:var(--accent-2);letter-spacing:-.02em;font-variant-numeric:tabular-nums;
  padding-left:4px;
}
.check-item h3{font-size:19px;font-weight:700;margin-bottom:8px}
.check-item p{font-size:15.5px;color:var(--ink-700);max-width:760px}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);margin-top:8px}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{
  width:100%;display:flex;align-items:center;gap:16px;
  min-height:64px;padding:14px 0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .22s var(--ease);
}
.faq__q:hover{color:var(--accent-2)}
.faq__num{font-size:12.5px;font-weight:700;color:var(--accent-2);letter-spacing:.06em;min-width:26px;flex:none}
.faq__icon{
  margin-left:auto;flex:none;position:relative;
  width:26px;height:26px;border:1px solid var(--line);border-radius:999px;
  transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--ink-900);transform:translate(-50%,-50%);
}
.faq__icon::before{width:11px;height:1.6px}
.faq__icon::after{width:1.6px;height:11px}
.faq__item.is-open .faq__icon{transform:rotate(45deg);background:var(--accent);border-color:var(--accent)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq__a-inner{
  background:var(--surface-alt);border-radius:12px;
  padding:18px 20px;margin:2px 0 20px;
  font-size:15.5px;color:var(--ink-700);
}

/* ============ 双列卡 ============ */
.cols2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.panel:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.panel--care{border-top:3px solid var(--danger)}
.panel--tip{border-top:3px solid var(--accent-2)}
.panel h3{font-size:19px;font-weight:700;margin-bottom:8px}
.panel__desc{font-size:14.5px;color:var(--ink-500);margin-bottom:18px}
.panel ul{display:flex;flex-direction:column;gap:12px}
.panel ul li{position:relative;padding-left:20px;font-size:15.5px;color:var(--ink-700)}
.panel ul li::before{
  content:"";position:absolute;left:0;top:12px;
  width:6px;height:6px;border-radius:999px;background:var(--accent-2);
}
.panel--care ul li::before{background:var(--danger)}

/* ============ 深色 CTA ============ */
.cta{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:#F7F6F2;
  padding:72px 0;
}
.cta__grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(247,246,242,.06) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(247,246,242,.06) 1px,transparent 1px);
  background-size:64px 64px;
}
.cta__inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:40px;flex-wrap:wrap;
}
.cta__text{max-width:640px}
.cta__text h2{color:#F7F6F2;font-size:clamp(24px,2.4vw,32px);font-weight:700;line-height:1.25;margin-bottom:12px}
.cta__text p{font-size:15.5px;color:rgba(247,246,242,.72)}
.cta__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.footer{background:var(--ink-900);color:#F7F6F2;padding:72px 0 28px;margin-top:auto}
.footer .brand__name{color:#F7F6F2}
.footer__grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;
  padding-bottom:40px;border-bottom:1px solid rgba(247,246,242,.14);
}
.footer__col{display:flex;flex-direction:column;gap:14px}
.footer__title{font-size:13px;letter-spacing:.08em;color:rgba(247,246,242,.6);margin:0}
.footer__text{font-size:13.5px;line-height:1.9;color:rgba(247,246,242,.62);margin:0}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__link{font-size:14px;color:rgba(247,246,242,.78);transition:color .22s var(--ease),transform .22s var(--ease)}
.footer__link:hover{color:var(--accent);transform:translateX(2px)}
.footer__bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:12.5px;color:rgba(247,246,242,.5);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ============ 断点 ============ */
@media (min-width:1440px){:root{--nav-w:260px}}
@media (min-width:1280px) and (max-width:1439px){:root{--nav-w:232px}}
@media (min-width:1024px) and (max-width:1279px){:root{--nav-w:208px}
  .sidebar{padding:22px 16px}
  .nav-link{font-size:14px}
}
@media (max-width:1023px){
  .sidebar{
    transform:translateX(-100%);
    width:82%;max-width:320px;
    box-shadow:0 0 40px rgba(16,18,22,.4);
  }
  .sidebar.is-open{transform:none}
  .topbar{display:flex}
  .page{margin-left:0}
  .section{padding:72px 0}
  .section--tight{padding:44px 0}
  .hero__inner{padding:56px 0 52px}
  .split{grid-template-columns:1fr;gap:36px}
  .split__media{order:-1}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section--tight{padding:36px 0}
  .hero__stats{grid-template-columns:1fr;gap:16px}
  .hero__actions{gap:12px}
  .check-item{grid-template-columns:1fr;gap:10px;padding:24px 0}
  .check-item__num{font-size:28px}
  .cols2{grid-template-columns:1fr}
  .cta{padding:56px 0}
  .cta__inner{flex-direction:column;align-items:flex-start;gap:26px}
  .faq__q{font-size:15.5px;gap:12px;align-items:flex-start}
  .faq__icon{margin-top:2px}
  .footer{padding:56px 0 24px}
  .footer__grid{grid-template-columns:1fr;gap:30px;padding-bottom:30px}
}
@media (max-width:480px){
  .hero__title{font-size:27px}
  .btn{width:100%}
  .hero__actions,.cta__actions{flex-direction:column;align-items:stretch}
  .brand__name{font-size:13px}
}