/* roulang page: index */
:root{
  --ink:#0D1114;
  --ink-2:#161D21;
  --ink-3:#263038;
  --paper:#F3F5F4;
  --surface:#FFFFFF;
  --brand:#10C9A0;
  --brand-deep:#0A9E7D;
  --brand-soft:#E4F7F1;
  --accent:#FF6B3D;
  --line:#E3E7E5;
  --muted:#6A7472;
  --ok:#12B76A;
  --warn:#F0A020;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,17,20,.06);
  --sh-2:0 14px 36px -16px rgba(13,17,20,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --t:180ms;
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.22}
p{margin:0}
h1,h2,h3{font-weight:700}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.mono{font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.01em}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease),color var(--t) var(--ease);
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--brand);color:var(--ink);box-shadow:var(--sh-1)}
.btn--primary:hover{background:#0FBB94;box-shadow:var(--sh-2)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand-deep)}
.btn--dark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.22);color:#fff}
.btn--dark:hover{border-color:var(--brand);color:var(--brand)}
.btn--sm{min-height:40px;padding:0 16px;font-size:14px}
.btn--block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;
  color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.link-arrow::after{content:"→";font-size:14px;transition:transform var(--t) var(--ease)}
.link-arrow:hover{color:var(--brand-deep);border-color:var(--brand-deep)}
.link-arrow:hover::after{transform:translateX(3px)}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:70;transition:box-shadow var(--t) var(--ease)}
.brandbar{background:var(--ink);color:#fff;transition:background var(--t) var(--ease)}
.brandbar__inner{display:flex;align-items:center;gap:18px;min-height:56px;padding-top:6px;padding-bottom:6px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;letter-spacing:-.01em;white-space:nowrap;flex:none}
.logo__mark{
  width:26px;height:26px;border-radius:8px;background:var(--brand);position:relative;flex:none;
  box-shadow:0 0 0 4px rgba(16,201,160,.14);
}
.logo__mark::before{
  content:"";position:absolute;left:8px;top:6px;width:8px;height:11px;
  border-right:2.5px solid var(--ink);border-bottom:2.5px solid var(--ink);
  transform:rotate(-45deg);
}
.logo__text{display:inline-block}
.brandbar__tools{display:flex;align-items:center;gap:12px;margin-left:auto}
.search{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-pill);padding:0 12px;height:40px}
.search__icon{width:14px;height:14px;border:1.8px solid rgba(255,255,255,.6);border-radius:50%;position:relative;flex:none}
.search__icon::after{content:"";position:absolute;right:-4px;bottom:-3px;width:6px;height:1.8px;background:rgba(255,255,255,.6);transform:rotate(45deg)}
.search input{background:transparent;border:0;outline:none;color:#fff;width:100%;font-size:14px;min-height:38px}
.search input::placeholder{color:rgba(255,255,255,.5)}
.hot{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none}
.hot::-webkit-scrollbar{display:none}
.hot a{
  font-size:13px;padding:6px 12px;border:1px solid rgba(255,255,255,.18);border-radius:var(--r-pill);
  color:#D5DEDA;white-space:nowrap;transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.hot a:hover{color:var(--brand);border-color:rgba(16,201,160,.55)}
.hamburger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.2);
  background:transparent;cursor:pointer;position:relative;flex:none;
}
.hamburger span{position:absolute;left:13px;right:13px;height:2px;background:#fff;border-radius:2px;transition:transform var(--t) var(--ease),opacity var(--t) var(--ease)}
.hamburger span:nth-child(1){top:15px}
.hamburger span:nth-child(2){top:21px}
.hamburger span:nth-child(3){top:27px}

.channelbar{background:var(--surface);border-bottom:1px solid var(--line);transition:background var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.channelbar__inner{display:flex;align-items:center;gap:24px;min-height:48px}
.channels{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none}
.channels::-webkit-scrollbar{display:none}
.channels a{
  display:inline-flex;align-items:center;height:48px;padding:0 14px;font-size:15px;font-weight:500;color:#39423F;
  border-bottom:2px solid transparent;white-space:nowrap;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.channels a:hover{color:var(--brand-deep)}
.channels a.is-active{color:var(--brand-deep);font-weight:700;border-bottom-color:var(--brand)}
.channelbar__switch{display:flex;align-items:center;gap:4px;margin-left:auto;background:var(--paper);border-radius:var(--r-pill);padding:4px}
.channelbar__switch button{
  border:0;background:transparent;font-size:13px;padding:6px 14px;border-radius:var(--r-pill);cursor:pointer;color:var(--muted);
  transition:background var(--t) var(--ease),color var(--t) var(--ease);
}
.channelbar__switch button.is-on{background:var(--surface);color:var(--ink);font-weight:600;box-shadow:var(--sh-1)}
.site-header.is-compact .brandbar{background:rgba(13,17,20,.94);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.site-header.is-compact .brandbar__inner{min-height:46px}
.site-header.is-compact .hot{display:none}
.site-header.is-compact .channelbar{background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 8px 20px -14px rgba(13,17,20,.35)}

/* 抽屉 */
.drawer{position:fixed;inset:0;z-index:90}
.drawer__mask{position:absolute;inset:0;background:rgba(13,17,20,.55);opacity:0;transition:opacity 200ms var(--ease)}
.drawer__panel{
  position:absolute;top:0;right:0;bottom:0;width:min(360px,86vw);background:var(--surface);
  padding:20px;overflow-y:auto;transform:translateX(100%);transition:transform 240ms var(--ease);
  display:flex;flex-direction:column;gap:20px;
}
.drawer.is-open .drawer__mask{opacity:1}
.drawer.is-open .drawer__panel{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between}
.drawer__title{font-weight:700;font-size:16px}
.drawer__close{width:44px;height:44px;border:1px solid var(--line);background:transparent;border-radius:var(--r-btn);font-size:20px;cursor:pointer;line-height:1}
.drawer__nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer__nav a{display:flex;align-items:center;min-height:52px;border-bottom:1px solid var(--line);font-size:15px;font-weight:500}
.drawer__nav a.is-active{color:var(--brand-deep);font-weight:700}
.drawer__hot{display:flex;flex-wrap:wrap;gap:8px}
.drawer__hot a{font-size:13px;padding:8px 14px;border:1px solid var(--line);border-radius:var(--r-pill);color:var(--muted)}
.drawer__search{display:flex;flex-direction:column;gap:8px}

/* ============ Hero ============ */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.hero__media{
  position:absolute;inset:0;
  background-image:linear-gradient(112deg,rgba(13,17,20,.94) 0%,rgba(13,17,20,.78) 48%,rgba(13,17,20,.58) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero__grid{
  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:56px 56px;
}
.hero__frame{position:absolute;inset:22px;border:1px solid rgba(255,255,255,.12);border-radius:18px;pointer-events:none}
.hero__inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:96px 0 84px}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#C7D2CE;
  border:1px solid rgba(255,255,255,.18);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:22px;
}
.hero__eyebrow b{color:var(--brand);font-weight:600}
.hero__title{font-size:clamp(2.1rem,4.4vw,3.4rem);line-height:1.08;font-weight:800;letter-spacing:-.02em;max-width:14em}
.hero__title em{display:block;font-style:normal;color:var(--brand)}
.hero__sub{margin-top:20px;font-size:18px;line-height:1.75;color:#C7D2CE;max-width:34em}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:44px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12)}
.stat__num{font-size:clamp(1.4rem,2.2vw,1.75rem);font-weight:700;color:#fff}
.stat__label{font-size:12px;color:#98A5A1;margin-top:6px;letter-spacing:.02em}
.hero__panel{position:relative}
.hero__panel img{border-radius:var(--r-card);border:1px solid rgba(255,255,255,.16);aspect-ratio:4/3;object-fit:cover;width:100%;box-shadow:0 30px 60px -30px rgba(0,0,0,.7)}
.hero__tag{
  position:absolute;left:-14px;bottom:22px;background:var(--surface);color:var(--ink);
  border-radius:var(--r-card);padding:14px 18px;box-shadow:var(--sh-2);
}
.hero__tag b{display:block;font-size:13px;color:var(--brand-deep)}
.hero__tag span{font-size:13px;color:var(--muted)}

/* ============ 通用板块 ============ */
.section{padding:104px 0}
.section--surface{background:var(--surface)}
.section--ink{background:var(--ink);color:#fff}
.section--ink .section__desc{color:#AEBAB6}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:52px}
.section__title{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;font-weight:700;letter-spacing:-.01em;max-width:22em}
.section__desc{margin-top:14px;font-size:16px;color:var(--muted);max-width:760px}
.eyebrow{font-size:13px;font-weight:600;color:var(--brand-deep);letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px}
.hr-line{height:1px;background:var(--line);border:0;margin:0}

/* 痛点提问 */
.ask-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.ask-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px;box-shadow:var(--sh-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.ask-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(16,201,160,.35)}
.ask-card__num{font-size:13px;font-weight:700;color:var(--brand-deep);letter-spacing:.1em}
.ask-card h3{font-size:1.05rem;margin:14px 0 10px;line-height:1.5}
.ask-card p{font-size:14px;color:var(--muted);line-height:1.75}

/* 方案卡片 */
.plan-list{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.plan-card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--sh-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.plan-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(16,201,160,.35)}
.plan-card--wide{grid-column:span 2;flex-direction:row}
.plan-card__media{overflow:hidden;position:relative;flex:none}
.plan-card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 400ms var(--ease)}
.plan-card:hover .plan-card__media img{transform:scale(1.03)}
.plan-card--wide .plan-card__media{width:46%}
.plan-card--wide .plan-card__media img{height:100%;aspect-ratio:auto}
.plan-card__body{padding:28px 26px 30px;display:flex;flex-direction:column;gap:14px;flex:1}
.plan-card__no{font-size:13px;color:var(--muted);letter-spacing:.1em}
.plan-card h3{font-size:1.25rem}
.plan-card p{font-size:15px;color:#3D4744;max-width:42ch}
.plan-points{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.plan-points li{position:relative;padding-left:20px;font-size:14px;color:var(--muted)}
.plan-points li::before{content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* 数据区 */
.metrics{display:flex;flex-wrap:wrap;gap:0}
.metric{flex:1 1 220px;padding:8px 32px;border-left:1px solid rgba(255,255,255,.12)}
.metric:first-child{border-left:0;padding-left:0}
.metric__num{font-size:clamp(1.8rem,3.4vw,2.6rem);font-weight:700;color:var(--brand);line-height:1.1}
.metric__label{margin-top:12px;font-size:15px;color:#D5DEDA}
.metric__note{margin-top:6px;font-size:12px;color:#87938F}
.metrics__foot{margin-top:36px;font-size:12px;color:#87938F}

/* 资讯列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);height:100%;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(16,201,160,.35)}
.news-card__link{display:flex;flex-direction:column;height:100%}
.news-card--wide{grid-column:span 2}
.news-card--wide .news-card__link{flex-direction:row}
.news-card--wide .news-card__media{width:48%;flex:none}
.news-card--wide .news-card__media img{aspect-ratio:auto;height:100%}
.news-card__media{position:relative;overflow:hidden;background:var(--brand-soft)}
.news-card__media img{aspect-ratio:16/9;object-fit:cover;width:100%;transition:transform 400ms var(--ease)}
.news-card:hover .news-card__media img{transform:scale(1.03)}
.badge{
  position:absolute;left:12px;top:12px;background:var(--brand-soft);color:var(--brand-deep);
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:var(--r-pill);
}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card__title{font-size:1.12rem;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-card__title{color:var(--brand-deep)}
.news-card__excerpt{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__meta{margin-top:auto;display:flex;gap:14px;font-size:13px;color:var(--muted);padding-top:8px;border-top:1px solid var(--line)}
.empty{
  min-height:180px;border:1px dashed #CFD8D5;border-radius:var(--r-card);background:var(--surface);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;text-align:center;padding:32px;
}
.empty p{color:var(--muted);font-size:15px}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:56px;align-items:start}
.faq{max-width:900px}
.faq__item{position:relative;padding:22px 0 22px 18px;border-bottom:1px solid var(--line)}
.faq__item::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;background:var(--brand);border-radius:3px;opacity:0;transition:opacity var(--t) var(--ease)}
.faq__item.is-open::before{opacity:1}
.faq__head{display:flex;gap:16px;align-items:flex-start}
.faq__num{font-size:14px;color:var(--muted);font-weight:600;line-height:1.8;flex:none}
.faq__h{margin:0;flex:1}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;padding:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;line-height:1.6;
  transition:color var(--t) var(--ease);
}
.faq__q:hover{color:var(--brand-deep)}
.faq__icon{position:relative;width:18px;height:18px;flex:none;transition:transform 240ms var(--ease)}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--brand-deep);border-radius:2px}
.faq__icon::before{left:0;right:0;top:8px;height:2px}
.faq__icon::after{top:0;bottom:0;left:8px;width:2px}
.faq__item.is-open .faq__icon{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease)}
.faq__a p{padding:14px 0 0 32px;font-size:15px;color:#3D4744;line-height:1.85;max-width:42em}

/* 表单带 */
.form-band{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:32px 30px;box-shadow:var(--sh-1)}
.form-band h3{font-size:1.25rem;margin-bottom:8px}
.form-band > p{font-size:14px;color:var(--muted);margin-bottom:22px}
.lead-form{display:grid;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;font-weight:600;color:#39423F}
.field input,.field select,.field textarea{
  min-height:48px;border:1px solid var(--line);border-radius:var(--r-input);background:var(--surface);
  padding:12px 14px;font-size:15px;outline:none;width:100%;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 15px) 22px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(16,201,160,.2)}
.field.is-error input,.field.is-error textarea{border-color:var(--accent);box-shadow:0 0 0 2px rgba(255,107,61,.14)}
.field__err{font-size:12px;color:var(--accent);display:none}
.field.is-error .field__err{display:block}
.form-note{font-size:12px;color:var(--muted)}
.form-success{
  display:flex;align-items:center;gap:12px;background:var(--brand-soft);border:1px solid rgba(16,201,160,.35);
  border-radius:var(--r-input);padding:14px 16px;font-size:14px;color:var(--brand-deep);
}
.form-success span[aria-hidden]{width:22px;height:22px;border-radius:50%;background:var(--brand);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;font-size:13px;flex:none}
[hidden]{display:none !important}

/* 隐私说明 */
.privacy{display:grid;grid-template-columns:72px 1fr;gap:28px;align-items:start}
.privacy__icon{width:56px;height:56px;border-radius:14px;background:var(--brand-soft);position:relative}
.privacy__icon::before{content:"";position:absolute;left:18px;top:14px;width:20px;height:16px;border:2px solid var(--brand-deep);border-radius:4px}
.privacy__icon::after{content:"";position:absolute;left:24px;top:8px;width:8px;height:10px;border:2px solid var(--brand-deep);border-bottom:0;border-radius:6px 6px 0 0}
.privacy h2{font-size:1.35rem;margin-bottom:12px}
.privacy p{font-size:14px;line-height:1.8;color:var(--muted);max-width:760px}
.privacy p + p{margin-top:10px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#fff;padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.08)}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer__brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;margin-bottom:14px}
.footer__desc{font-size:14px;color:#9AA6A2;line-height:1.8;max-width:34ch}
.footer__col h4{font-size:13px;font-weight:600;color:#87938F;margin-bottom:16px;letter-spacing:.06em}
.footer__col ul{display:flex;flex-direction:column;gap:10px}
.footer__col a{font-size:14px;color:#C7D2CE;transition:color var(--t) var(--ease)}
.footer__col a:hover{color:var(--brand)}
.footer__col p{font-size:14px;color:#C7D2CE;line-height:1.8}
.footer__bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:13px;color:#87938F;
}
.footer__bottom a{color:#87938F}
.footer__bottom a:hover{color:var(--brand)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity 400ms var(--ease),transform 400ms var(--ease)}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 22px}
  .hot a:nth-child(n+3){display:none}
  .hero__inner{gap:40px;padding:84px 0 72px}
  .hero__panel img{aspect-ratio:16/11}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .hero__inner{grid-template-columns:1fr;padding:72px 0 64px}
  .hero__frame{display:none}
  .hero__panel img{aspect-ratio:16/9}
  .hero__tag{position:static;display:inline-flex;gap:10px;align-items:center;margin-top:16px;padding:12px 16px;box-shadow:none;border:1px solid var(--line)}
  .ask-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .news-card--wide{grid-column:span 2}
  .plan-card--wide{grid-column:span 2;flex-direction:column}
  .plan-card--wide .plan-card__media{width:100%}
  .faq-wrap{grid-template-columns:1fr;gap:36px}
  .metrics{gap:24px 0}
  .metric{flex:1 1 45%;padding:0 24px}
  .metric:nth-child(3){border-left:0;padding-left:0}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .container{padding:0 20px}
  .section{padding:48px 0}
  .search,.hot{display:none}
  .hamburger{display:block}
  .brandbar__inner{min-height:56px}
  .logo__text{font-size:15px}
  .channelbar__inner{gap:12px}
  .channelbar__switch{display:none}
  .channels a{font-size:14px;padding:0 10px}
  .hero__title{font-size:clamp(1.85rem,7vw,2.3rem)}
  .hero__sub{font-size:16px}
  .hero__cta{gap:12px}
  .hero__cta .btn{width:100%}
  .hero__stats{gap:20px}
  .stat{flex:1 1 40%}
  .section__head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .ask-grid{grid-template-columns:1fr;gap:16px}
  .plan-list{grid-template-columns:1fr;gap:20px}
  .plan-card--wide{grid-column:span 1}
  .plan-card--wide .plan-card__media img{aspect-ratio:16/9}
  .news-grid{grid-template-columns:1fr;gap:18px}
  .news-card--wide{grid-column:span 1}
  .news-card--wide .news-card__link{flex-direction:column}
  .news-card--wide .news-card__media{width:100%}
  .news-card--wide .news-card__media img{aspect-ratio:16/9}
  .metric{flex:1 1 100%;padding:0;border-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:20px}
  .metric:first-child{border-top:0;padding-top:0}
  .faq__a p{padding-left:0}
  .form-band{padding:24px 20px}
  .privacy{grid-template-columns:1fr;gap:16px}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .hero__stats{border-top:1px solid rgba(255,255,255,.12);padding-top:20px}
  .stat{flex:1 1 100%}
  .btn{width:100%}
  .hero__tag{width:100%}
  .channels a{font-size:13px}
}

/* roulang page: article */
:root{
  --ink:#0D1114;
  --ink-2:#161D21;
  --ink-3:#263038;
  --paper:#F3F5F4;
  --surface:#FFFFFF;
  --brand:#10C9A0;
  --brand-deep:#0A9E7D;
  --brand-soft:#E4F7F1;
  --accent:#FF6B3D;
  --line:#E3E7E5;
  --muted:#6A7472;
  --ok:#12B76A;
  --warn:#F0A020;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(13,17,20,.06);
  --sh-2:0 14px 36px -16px rgba(13,17,20,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --wrap:1240px;
  --font:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::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);background:var(--paper);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{max-width:var(--wrap);margin:0 auto;padding:0 24px;width:100%}

/* ---------- progress ---------- */
.readbar{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--brand),var(--brand-deep));z-index:80;transition:width .12s linear}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60}
.topbar{background:var(--ink);color:#fff;border-bottom:1px solid rgba(255,255,255,.06)}
.topbar__inner{display:flex;align-items:center;gap:20px;height:56px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo__mark{width:26px;height:26px;border-radius:8px;background:var(--brand);position:relative;display:inline-block;flex:0 0 auto}
.logo__mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background:var(--ink)}
.logo__text{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.searchbar{display:flex;align-items:center;gap:8px;background:var(--ink-2);border:1px solid var(--ink-3);border-radius:var(--r-pill);height:36px;padding:0 14px;width:240px;transition:border-color .18s var(--ease),background .18s var(--ease)}
.searchbar:focus-within{border-color:var(--brand);background:#0B1113}
.searchbar svg{flex:0 0 auto;opacity:.7}
.searchbar input{flex:1;min-width:0;background:none;border:0;outline:none;color:#fff;font-size:13px}
.searchbar input::placeholder{color:#8B9694}
.hotwords{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;flex:1;min-width:0}
.hotwords::-webkit-scrollbar{display:none}
.hotwords a{font-size:13px;line-height:1;padding:7px 12px;border:1px solid rgba(255,255,255,.18);border-radius:var(--r-pill);color:#C9D3D0;white-space:nowrap;transition:color .18s var(--ease),border-color .18s var(--ease)}
.hotwords a:hover{color:var(--brand);border-color:rgba(16,201,160,.55)}
.menu-btn{display:none;width:44px;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.18);align-items:center;justify-content:center}
.menu-btn span{display:block;width:18px;height:2px;background:#fff;position:relative}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff}
.menu-btn span::before{top:-6px}
.menu-btn span::after{top:6px}

/* channel bar */
.channelbar{background:var(--surface);border-bottom:1px solid var(--line)}
.channelbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:48px}
.channels{display:flex;align-items:center;gap:28px;overflow-x:auto;scrollbar-width:none}
.channels::-webkit-scrollbar{display:none}
.channels a{position:relative;font-size:15px;font-weight:500;color:var(--ink);white-space:nowrap;padding:14px 0;display:inline-block;transition:color .18s var(--ease)}
.channels a::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease)}
.channels a:hover{color:var(--brand-deep)}
.channels a:hover::after{transform:scaleX(1)}
.channels a.is-active{color:var(--brand-deep);font-weight:700}
.channels a.is-active::after{transform:scaleX(1)}
.channelbar__switch{display:flex;gap:4px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-pill);padding:3px;flex:0 0 auto}
.channelbar__switch button{font-size:13px;padding:5px 14px;border-radius:var(--r-pill);color:var(--muted);transition:all .18s var(--ease)}
.channelbar__switch button.is-on{background:var(--surface);color:var(--ink);font-weight:600;box-shadow:var(--sh-1)}
.site-header.is-stuck .hotwords{display:none}
.site-header.is-stuck .topbar__inner{height:52px}
.site-header.is-stuck .logo__text{font-size:15px}
.site-header.is-stuck .channelbar{background:rgba(255,255,255,.92);backdrop-filter:blur(10px);box-shadow:0 6px 18px -14px rgba(13,17,20,.4)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--primary{background:var(--brand);color:var(--ink)}
.btn--primary:hover{transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(16,201,160,.9)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{border:1px solid var(--line);color:var(--ink);background:transparent}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px)}
.btn--ghost-dark{border:1px solid rgba(255,255,255,.24);color:#fff}
.btn--ghost-dark:hover{border-color:var(--brand);color:var(--brand)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.textlink{font-size:14px;font-weight:600;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:2px;transition:color .18s var(--ease),border-color .18s var(--ease)}
.textlink:hover{color:var(--brand-deep);border-color:var(--brand-deep)}

/* ---------- breadcrumb ---------- */
.crumb{font-size:13px;color:var(--muted);padding:22px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:#C2CAC8}
.crumb a:hover{color:var(--brand-deep)}
.crumb [aria-current="page"]{color:var(--ink)}

/* ---------- article head ---------- */
.article-head{padding:26px 0 34px;border-bottom:1px solid var(--line);margin-bottom:40px}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;line-height:1;padding:7px 12px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand-deep)}
.article-head h1{font-size:clamp(2rem,4.2vw,3.2rem);line-height:1.12;font-weight:800;letter-spacing:-.02em;margin:18px 0 0;max-width:940px}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:20px;font-size:14px;color:var(--muted)}
.meta span{display:inline-flex;align-items:center;gap:6px}
.meta .dot{width:5px;height:5px;border-radius:50%;background:#C2CAC8;display:inline-block}
.lede{margin-top:22px;max-width:760px;font-size:16px;line-height:1.85;color:#3A4442}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:56px;align-items:start;padding-bottom:72px}
.wrap-col{max-width:760px}

/* ---------- article body ---------- */
.article-body{font-size:17px;line-height:1.9;color:#141A1D}
.article-body>*+*{margin-top:1.3em}
.article-body h2{font-size:clamp(1.35rem,2.2vw,1.7rem);line-height:1.3;font-weight:700;margin-top:2.2em;padding-left:16px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:.35em;bottom:.25em;width:3px;border-radius:2px;background:var(--brand)}
.article-body h3{font-size:1.15rem;line-height:1.4;font-weight:700;margin-top:1.8em}
.article-body p{max-width:760px}
.article-body a{color:var(--brand-deep);border-bottom:1px dashed rgba(10,158,125,.5);transition:border-color .18s var(--ease)}
.article-body a:hover{border-bottom-style:solid}
.article-body ul,.article-body ol{padding-left:1.25em}
.article-body ul li{list-style:disc;margin-top:.6em;line-height:1.8}
.article-body ol li{list-style:decimal;margin-top:.6em;line-height:1.8}
.article-body blockquote{margin:1.6em 0;padding:16px 20px;background:var(--paper);border-left:3px solid var(--brand);border-radius:0 var(--r-img) var(--r-img) 0;color:#333D3B}
.article-body img{border-radius:var(--r-img);margin:1.6em auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{margin:1.6em 0;font-size:15px;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--paper);font-weight:700}
.article-body strong{font-weight:700}

/* ---------- toc ---------- */
.toc-wrap{position:sticky;top:130px}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 20px 16px;box-shadow:var(--sh-1)}
.toc h2{font-size:13px;letter-spacing:.08em;color:var(--muted);font-weight:600;text-transform:uppercase}
.toc ol{margin-top:12px;display:flex;flex-direction:column;gap:2px;counter-reset:toc}
.toc a{display:block;font-size:14px;line-height:1.6;color:#3A4442;padding:6px 0 6px 14px;border-left:2px solid transparent;transition:all .18s var(--ease)}
.toc a:hover{color:var(--brand-deep)}
.toc a.is-current{color:var(--brand-deep);font-weight:600;border-left-color:var(--brand)}
.toc-empty{font-size:14px;color:var(--muted);margin-top:10px;line-height:1.7}
.toc-cta{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.toc-cta p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:12px}

/* ---------- tags / pager ---------- */
.tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
.tags span{font-size:13px;color:var(--brand-deep);background:var(--brand-soft);border-radius:var(--r-pill);padding:7px 14px}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.pager a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:18px 20px;transition:all .18s var(--ease)}
.pager a:hover{border-color:rgba(16,201,160,.5);box-shadow:var(--sh-2);transform:translateY(-1px)}
.pager small{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.pager strong{font-size:15px;font-weight:600;line-height:1.5}

/* ---------- related ---------- */
.section{padding:76px 0}
.section--paper{background:var(--paper)}
.section--surface{background:var(--surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.05rem);line-height:1.2}
.section-head p{font-size:14px;color:var(--muted);margin-top:8px}
.grid{display:grid;gap:24px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);display:flex;flex-direction:column}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(16,201,160,.35)}
.card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card__media img{transform:scale(1.03)}
.card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__body h3{font-size:18px;line-height:1.45;font-weight:700}
.card:hover .card__body h3{color:var(--brand-deep)}
.card__body p{font-size:14px;color:var(--muted);line-height:1.7}
.card__foot{margin-top:auto;font-size:13px;color:var(--muted);display:flex;gap:10px;align-items:center}
.card--plain .card__top{height:3px;background:var(--brand)}

/* ---------- faq ---------- */
.faq{max-width:900px;border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line);position:relative}
.faq__q{width:100%;display:flex;align-items:flex-start;gap:16px;text-align:left;padding:22px 0;transition:color .18s var(--ease)}
.faq__idx{font-family:var(--mono);font-size:13px;color:var(--muted);padding-top:4px;flex:0 0 auto}
.faq__title{font-size:17px;font-weight:600;line-height:1.5;flex:1}
.faq__icon{position:relative;width:18px;height:18px;flex:0 0 auto;margin-top:4px}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--muted);transition:transform .24s var(--ease),background .18s var(--ease)}
.faq__icon::before{left:0;top:8px;width:18px;height:1.6px}
.faq__icon::after{top:0;left:8px;width:1.6px;height:18px}
.faq__a{overflow:hidden;height:0;transition:height .24s var(--ease)}
.faq__a p{font-size:15px;line-height:1.85;color:#3A4442;padding:0 34px 24px 34px;max-width:760px}
.faq__item.is-open .faq__icon::after{transform:rotate(90deg);opacity:0}
.faq__item.is-open .faq__icon::before{background:var(--brand)}
.faq__item.is-open::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:2px;background:var(--brand)}
.faq__item.is-open .faq__title{color:var(--brand-deep)}

/* ---------- cta band ---------- */
.cta{background:var(--ink);color:#fff;position:relative;overflow:hidden;border-radius:18px;padding:52px;display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center}
.cta::after{content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(16,201,160,.28),transparent 68%)}
.cta h2{font-size:clamp(1.5rem,2.4vw,2rem);line-height:1.25;position:relative;z-index:1}
.cta p{color:#B9C4C0;font-size:15px;margin-top:14px;max-width:560px;position:relative;z-index:1}
.cta__actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;justify-content:flex-end}
.cta-band{padding:8px 0 84px}

/* ---------- privacy strip ---------- */
.privacy{display:grid;grid-template-columns:56px 1fr;gap:20px;align-items:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:26px 28px;margin-bottom:84px}
.privacy__icon{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;color:var(--brand-deep)}
.privacy h2{font-size:16px;font-weight:700;margin-bottom:8px}
.privacy p{font-size:14px;line-height:1.8;color:var(--muted);max-width:900px}

/* ---------- empty state ---------- */
.empty{border:1px dashed #CBD4D1;background:#FAFBFB;border-radius:var(--r-card);padding:56px 28px;text-align:center}
.empty h2{font-size:20px}
.empty p{font-size:14px;color:var(--muted);margin:12px auto 22px;max-width:520px}

/* ---------- drawer ---------- */
.mask{position:fixed;inset:0;background:rgba(13,17,20,.55);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease);z-index:70}
.mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;height:100%;width:340px;background:var(--surface);z-index:75;transform:translateX(102%);transition:transform .26s var(--ease);display:flex;flex-direction:column;padding:22px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer__close{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);font-size:18px;line-height:1}
.drawer__group h3{font-size:13px;color:var(--muted);font-weight:600;letter-spacing:.06em;margin:18px 0 10px}
.drawer__group a{display:block;padding:12px 0;border-bottom:1px solid var(--line);font-size:15px}
.drawer__group a.is-active{color:var(--brand-deep);font-weight:700}
.drawer .btn{margin-top:22px;width:100%}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#fff;border-top:1px solid rgba(255,255,255,.08);padding:64px 0 28px}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer__brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;margin-bottom:14px}
.footer__desc{font-size:14px;line-height:1.8;color:#B9C4C0;max-width:320px}
.footer__col h4{font-size:13px;font-weight:600;color:#8B9694;letter-spacing:.06em;margin-bottom:14px}
.footer__col ul{display:flex;flex-direction:column;gap:10px}
.footer__col a{font-size:14px;color:#D6DEDB;transition:color .18s var(--ease)}
.footer__col a:hover{color:var(--brand)}
.footer__col p{font-size:14px;color:#B9C4C0;line-height:1.8;margin-bottom:10px}
.footer__bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;font-size:13px;color:#8B9694}
.footer__bottom a{color:#B9C4C0}
.footer__bottom a:hover{color:var(--brand)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

@media (max-width:1279px){
  .layout{grid-template-columns:1fr;gap:0}
  .toc-wrap{display:none}
  .cta{grid-template-columns:1fr;padding:40px}
  .cta__actions{justify-content:flex-start}
}
@media (max-width:1023px){
  .footer__grid{grid-template-columns:1fr 1fr;gap:30px}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .hotwords{display:none}
  .section{padding:64px 0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .searchbar{display:none}
  .menu-btn{display:flex}
  .topbar__inner{gap:12px;justify-content:space-between}
  .logo__text{font-size:15px}
  .channels{gap:20px}
  .channelbar__switch{display:none}
  .article-head{padding:18px 0 26px;margin-bottom:28px}
  .article-head h1{font-size:clamp(1.65rem,7.5vw,2.2rem)}
  .article-body{font-size:16px;line-height:1.85}
  .article-body p{max-width:100%}
  .section{padding:48px 0}
  .grid--3{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  .faq__a p{padding:0 0 20px 30px}
  .privacy{grid-template-columns:1fr;padding:22px;margin-bottom:56px}
  .drawer{width:100%}
  .btn{width:100%}
  .cta__actions .btn{width:100%}
  .footer__grid{grid-template-columns:1fr;gap:26px}
  .footer__bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink:#0D1114;
  --ink-2:#161D21;
  --ink-3:#263038;
  --paper:#F3F5F4;
  --surface:#FFFFFF;
  --brand:#10C9A0;
  --brand-deep:#0A9E7D;
  --brand-soft:#E4F7F1;
  --accent:#FF6B3D;
  --line:#E3E7E5;
  --muted:#6A7472;
  --ok:#12B76A;
  --warn:#F0A020;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:12px;
  --sh-1:0 1px 2px rgba(13,17,20,.06);
  --sh-2:0 14px 36px -16px rgba(13,17,20,.24);
  --t:180ms cubic-bezier(.2,.7,.2,1);
  --font:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::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);
  background:var(--paper);
  -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}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.2}
h1{font-size:clamp(2rem,4.6vw,3.4rem);line-height:1.1;font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,2.6vw,2.25rem)}
h3{font-size:1.25rem;line-height:1.35}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
strong{font-weight:700}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
}
.btn--sm{height:40px;padding:0 16px;font-size:14px}
.btn--primary{background:var(--brand);color:var(--ink);box-shadow:var(--sh-1)}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--sh-2);background:#12d9ad}
.btn--primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn--ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px)}
.btn--ghost-light{background:transparent;border:1px solid rgba(255,255,255,.24);color:#fff}
.btn--ghost-light:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none}

.textlink{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--line);
  padding-bottom:2px;
  transition:color var(--t),border-color var(--t);
}
.textlink::after{content:"→";font-size:13px;transition:transform var(--t)}
.textlink:hover{color:var(--brand-deep);border-color:var(--brand-deep)}
.textlink:hover::after{transform:translateX(3px)}

/* ---------- 顶部品牌行 ---------- */
.site-header{position:sticky;top:0;z-index:120}
.topbar{background:var(--ink);color:#fff}
.topbar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:56px;
  padding-top:8px;
  padding-bottom:8px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo__mark{
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(140deg,var(--brand) 0%,#0A9E7D 100%);
  position:relative;flex-shrink:0;
}
.logo__mark::after{
  content:"";position:absolute;inset:8px 8px 8px 8px;
  border-radius:3px;background:var(--ink);
}
.logo__text{font-size:15px;font-weight:700;letter-spacing:.01em;color:#fff;white-space:nowrap}
.topbar__tools{display:flex;align-items:center;gap:14px;min-width:0}
.search{position:relative;display:flex;align-items:center;width:240px}
.search svg{position:absolute;left:12px;width:15px;height:15px;color:rgba(255,255,255,.5)}
.search input{
  width:100%;height:38px;padding:0 12px 0 34px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-input);
  color:#fff;font-size:13px;
  transition:border-color var(--t),background var(--t);
}
.search input::placeholder{color:rgba(255,255,255,.45)}
.search input:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.1)}
.hotwords{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none}
.hotwords::-webkit-scrollbar{display:none}
.hotwords a{
  display:inline-block;
  padding:4px 11px;
  font-size:13px;
  color:rgba(255,255,255,.78);
  border:1px solid rgba(255,255,255,.16);
  border-radius:999px;
  white-space:nowrap;
  transition:border-color var(--t),color var(--t),background var(--t);
}
.hotwords a:hover{border-color:var(--brand);color:var(--brand);background:rgba(16,201,160,.08)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-btn);
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 频道条 ---------- */
.channelbar{background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow var(--t)}
.channelbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:48px}
.channels{display:flex;align-items:center;gap:26px;overflow-x:auto;scrollbar-width:none}
.channels::-webkit-scrollbar{display:none}
.channels a{
  display:inline-block;
  padding:13px 0;
  font-size:14.5px;
  font-weight:500;
  color:var(--ink);
  white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:color var(--t),border-color var(--t);
}
.channels a:hover{color:var(--brand-deep)}
.channels a.is-active{color:var(--brand-deep);border-bottom-color:var(--brand);font-weight:700}
.channelbar__switch{display:flex;gap:6px;flex-shrink:0}
.channelbar__switch button{
  padding:6px 14px;font-size:13px;font-weight:600;color:var(--muted);
  border-radius:999px;transition:background var(--t),color var(--t);
}
.channelbar__switch button:hover{color:var(--ink)}
.channelbar__switch button.is-on{background:var(--brand-soft);color:var(--brand-deep)}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);
  background:var(--ink-2);color:#fff;z-index:200;
  transform:translateX(102%);
  transition:transform 240ms cubic-bezier(.2,.7,.2,1);
  padding:22px;overflow-y:auto;
  box-shadow:-24px 0 60px -30px rgba(0,0,0,.7);
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer__head strong{font-size:15px}
.drawer__close{
  width:40px;height:40px;border:1px solid rgba(255,255,255,.18);border-radius:var(--r-btn);
  display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;
}
.drawer__group{margin-bottom:24px}
.drawer__group h4{font-size:13px;color:rgba(255,255,255,.5);margin-bottom:10px;font-weight:600}
.drawer__group li a{
  display:block;padding:12px 0;font-size:15px;
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:color var(--t);
}
.drawer__group li a:hover,.drawer__group li a.is-active{color:var(--brand)}
.drawer__group li a.is-active{font-weight:700}
.drawer__tags{display:flex;flex-wrap:wrap;gap:8px}
.drawer__tags a{
  padding:7px 13px;font-size:13px;border:1px solid rgba(255,255,255,.16);border-radius:999px;
}
.scrim{
  position:fixed;inset:0;background:rgba(13,17,20,.55);
  opacity:0;visibility:hidden;transition:opacity 200ms linear,visibility 200ms;z-index:190;
}
.scrim.is-open{opacity:1;visibility:visible}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  padding:20px 0 0;
}
.breadcrumb a{color:var(--muted);transition:color var(--t)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#C8CFCC}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ---------- 页头 Hero ---------- */
.page-hero{
  background:var(--ink);
  color:#fff;
  position:relative;
  overflow:hidden;
  margin-top:20px;
  border-radius:var(--r-card);
}
.page-hero__media{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  opacity:.34;
}
.page-hero__grid{
  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:64px 64px;
  opacity:.6;
}
.page-hero__inner{position:relative;padding:64px 44px 52px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;font-weight:700;margin-bottom:20px;
}
.page-hero h1{color:#fff;max-width:820px}
.page-hero__lead{
  max-width:760px;
  margin-top:20px;
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.76);
}
.page-hero__stats{
  display:flex;flex-wrap:wrap;gap:0;
  margin-top:36px;
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:24px;
}
.stat{padding-right:34px;margin-right:34px;border-right:1px solid rgba(255,255,255,.12)}
.stat:last-child{border-right:0;margin-right:0;padding-right:0}
.stat__num{font-family:var(--mono);font-size:clamp(1.5rem,2.6vw,1.9rem);font-weight:700;color:var(--brand);letter-spacing:.01em}
.stat__label{font-size:12.5px;color:rgba(255,255,255,.58);margin-top:2px}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--paper{background:var(--paper)}
.section--surface{background:var(--surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head p{color:var(--muted);font-size:15px;margin:10px 0 0;max-width:620px}
.section-head h2{max-width:720px}

/* ---------- 头条大卡 ---------- */
.feature{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t),border-color var(--t);
  margin-bottom:32px;
}
.feature:hover{box-shadow:var(--sh-2);border-color:rgba(16,201,160,.35)}
.feature__media{position:relative;min-height:320px;overflow:hidden;background:var(--ink)}
.feature__media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform 420ms cubic-bezier(.2,.7,.2,1)}
.feature:hover .feature__media img{transform:scale(1.03)}
.feature__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,17,20,.15),rgba(13,17,20,.62));
}
.feature__tag{
  position:absolute;top:18px;left:18px;z-index:2;
  padding:6px 13px;border-radius:999px;
  background:var(--brand);color:var(--ink);
  font-size:12.5px;font-weight:700;
}
.feature__body{padding:40px 38px;display:flex;flex-direction:column;justify-content:center}
.feature__body h3{font-size:clamp(1.35rem,2.1vw,1.75rem);line-height:1.32;margin-bottom:14px}
.feature__body p{color:var(--muted);font-size:15px;line-height:1.85}
.feature__list{margin:18px 0 24px;display:grid;gap:9px}
.feature__list li{position:relative;padding-left:20px;font-size:14px;color:var(--ink)}
.feature__list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:2px;background:var(--brand);
}

/* ---------- 卡片网格 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t),border-color var(--t),transform var(--t);
  display:flex;flex-direction:column;
}
.news-card:hover{box-shadow:var(--sh-2);border-color:rgba(16,201,160,.35);transform:translateY(-2px)}
.news-card__media{position:relative;overflow:hidden;background:var(--brand-soft);aspect-ratio:16/9}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.2,1)}
.news-card:hover .news-card__media img{transform:scale(1.04)}
.badge{
  position:absolute;top:12px;left:12px;
  padding:4px 11px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:12px;font-weight:700;
}
.news-card__body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.news-card__title{font-size:17px;font-weight:700;line-height:1.45;margin-bottom:10px;transition:color var(--t)}
.news-card:hover .news-card__title{color:var(--brand-deep)}
.news-card__desc{font-size:14px;color:var(--muted);line-height:1.8;flex:1}
.news-card__meta{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--muted);
}
.news-card__meta span:first-child{font-family:var(--mono);letter-spacing:.01em}
.news-card--text .news-card__body{border-top:3px solid var(--brand);padding-top:22px}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;gap:0;border-top:1px solid var(--line)}
.step{
  display:grid;
  grid-template-columns:88px 1fr 280px;
  gap:28px;
  align-items:start;
  padding:30px 0;
  border-bottom:1px solid var(--line);
  transition:background var(--t);
}
.step:hover{background:rgba(16,201,160,.03)}
.step__num{
  font-family:var(--mono);
  font-size:26px;font-weight:700;color:var(--brand);
  line-height:1.2;
}
.step__main h3{margin-bottom:8px}
.step__main p{color:var(--muted);font-size:15px;margin:0}
.step__aside{
  font-size:13.5px;color:var(--muted);
  background:var(--brand-soft);
  color:var(--brand-deep);
  padding:14px 16px;border-radius:var(--r-img);
  line-height:1.7;
}
.step__aside strong{display:block;font-size:12.5px;color:var(--ink);margin-bottom:4px}

/* ---------- 场景交错区 ---------- */
.scene{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
  padding:44px 0;
  border-top:1px solid var(--line);
}
.scene:first-of-type{border-top:0;padding-top:0}
.scene--flip .scene__media{order:2}
.scene__media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  background:var(--brand-soft);
}
.scene__media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.scene__tag{
  display:inline-block;font-family:var(--mono);font-size:13px;font-weight:700;
  color:var(--brand-deep);letter-spacing:.02em;margin-bottom:12px;
}
.scene h3{font-size:clamp(1.25rem,2vw,1.6rem);margin-bottom:12px}
.scene p{color:var(--muted);font-size:15.5px}
.scene__points{display:grid;gap:10px;margin:18px 0 0}
.scene__points li{
  position:relative;padding-left:22px;font-size:14.5px;color:var(--ink);
}
.scene__points li::before{
  content:"";position:absolute;left:0;top:12px;width:10px;height:2px;background:var(--brand);
}

/* ---------- 主题入口 ---------- */
.topic-pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.topic-pills a{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  font-size:14px;font-weight:600;
  transition:border-color var(--t),color var(--t),transform var(--t),box-shadow var(--t);
}
.topic-pills a:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px);box-shadow:var(--sh-1)}
.topic-pills a span{font-family:var(--mono);font-size:12px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{max-width:900px;border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{
  width:100%;
  display:flex;align-items:flex-start;gap:18px;
  padding:22px 0;
  text-align:left;
  font-size:17px;font-weight:600;line-height:1.55;
  transition:color var(--t);
}
.faq__q:hover{color:var(--brand-deep)}
.faq__idx{font-family:var(--mono);font-size:14px;color:var(--muted);padding-top:3px;flex-shrink:0}
.faq__icon{
  margin-left:auto;flex-shrink:0;
  width:22px;height:22px;position:relative;top:3px;
  transition:transform 240ms cubic-bezier(.2,.7,.2,1);
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--muted);
  transform:translate(-50%,-50%);transition:background var(--t);
}
.faq__icon::before{width:14px;height:2px}
.faq__icon::after{width:2px;height:14px}
.faq__q[aria-expanded="true"] .faq__icon{transform:rotate(135deg)}
.faq__q[aria-expanded="true"] .faq__icon::before,
.faq__q[aria-expanded="true"] .faq__icon::after{background:var(--brand-deep)}
.faq__a{
  max-height:0;overflow:hidden;
  transition:max-height 240ms cubic-bezier(.2,.7,.2,1);
}
.faq__a-inner{
  padding:0 0 24px 46px;
  border-left:3px solid transparent;
  font-size:15px;line-height:1.85;color:var(--muted);
  transition:border-color var(--t);
}
.faq__item.is-open .faq__a-inner{border-left-color:var(--brand)}
.faq__item.is-open .faq__a-inner{padding-left:20px}

/* ---------- CTA 表单带 ---------- */
.cta-band{
  background:var(--ink);
  color:#fff;
  border-radius:var(--r-card);
  padding:56px 48px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;top:-80px;right:-60px;width:320px;height:320px;
  border-radius:50%;background:radial-gradient(circle,rgba(16,201,160,.22),transparent 68%);
}
.cta-band h2{color:#fff;position:relative}
.cta-band__desc{color:rgba(255,255,255,.72);font-size:15.5px;margin-top:16px;max-width:440px;position:relative}
.cta-band__list{display:grid;gap:10px;margin-top:24px;position:relative}
.cta-band__list li{position:relative;padding-left:20px;font-size:14px;color:rgba(255,255,255,.72)}
.cta-band__list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:2px;background:var(--brand)}
.form{position:relative;background:var(--ink-2);border:1px solid var(--ink-3);border-radius:var(--r-card);padding:28px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:8px;color:rgba(255,255,255,.82)}
.field input,.field select,.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  font-family:var(--font);
  font-size:14.5px;
  color:var(--ink);
  transition:border-color var(--t),box-shadow var(--t);
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(16,201,160,.2);
}
.field .hint{font-size:12.5px;color:rgba(255,255,255,.5);margin-top:6px}
.field.has-error input,.field.has-error textarea{border-color:var(--accent)}
.field .err{font-size:12.5px;color:var(--accent);margin-top:6px;display:none}
.field.has-error .err{display:block}
.form__note{font-size:12.5px;color:rgba(255,255,255,.5);margin-top:14px;line-height:1.7}
.form__success{display:none;text-align:center;padding:26px 8px}
.form__success.is-on{display:block}
.form__success .check{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  background:rgba(16,201,160,.14);border:1px solid rgba(16,201,160,.5);
  display:flex;align-items:center;justify-content:center;
}
.form__success .check svg{width:26px;height:26px;color:var(--brand)}
.form__success h3{color:#fff;margin-bottom:8px}
.form__success p{color:rgba(255,255,255,.62);font-size:14px}

/* ---------- 隐私说明 ---------- */
.privacy{
  display:flex;gap:28px;align-items:flex-start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:36px 38px;
  box-shadow:var(--sh-1);
}
.privacy__icon{
  flex-shrink:0;width:52px;height:52px;border-radius:14px;
  background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;
}
.privacy__icon svg{width:24px;height:24px;color:var(--brand-deep)}
.privacy h3{margin-bottom:10px}
.privacy p{font-size:14px;line-height:1.8;color:var(--muted);max-width:820px}

/* ---------- 相关入口 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.related-card:hover{border-color:rgba(16,201,160,.4);box-shadow:var(--sh-2);transform:translateY(-2px)}
.related-card h3{font-size:17px;margin-bottom:10px}
.related-card p{font-size:14px;color:var(--muted);margin-bottom:16px}
.related-card__no{font-family:var(--mono);font-size:13px;color:var(--brand-deep);font-weight:700;display:block;margin-bottom:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;border-top:1px solid rgba(255,255,255,.08);margin-top:88px}
.footer__grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding:64px 0 44px;
}
.footer__brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;margin-bottom:14px}
.footer__desc{font-size:14px;color:rgba(255,255,255,.6);line-height:1.8;max-width:320px}
.footer__col h4{font-size:13px;font-weight:600;color:rgba(255,255,255,.5);margin-bottom:16px}
.footer__col ul{display:grid;gap:11px}
.footer__col a{font-size:14px;color:rgba(255,255,255,.78);transition:color var(--t)}
.footer__col a:hover{color:var(--brand)}
.footer__col p{font-size:14px;color:rgba(255,255,255,.68);line-height:1.8;margin-bottom:10px}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:22px 0 32px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer__bottom a{color:rgba(255,255,255,.6)}
.footer__bottom a:hover{color:var(--brand)}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity 420ms cubic-bezier(.2,.7,.2,1),transform 420ms cubic-bezier(.2,.7,.2,1)}
.fade-up.is-in{opacity:1;transform:none}

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

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .search{width:200px}
  .channels{gap:20px}
  .step{grid-template-columns:72px 1fr 240px;gap:22px}
}
@media (max-width:1023px){
  .hotwords{display:none}
  .search{width:170px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .feature{grid-template-columns:1fr}
  .feature__body{padding:32px 28px 34px}
  .scene{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .scene--flip .scene__media{order:0}
  .step{grid-template-columns:56px 1fr;gap:18px}
  .step__aside{grid-column:2;margin-top:14px}
  .cta-band{grid-template-columns:1fr;gap:36px;padding:44px 32px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .search{display:none}
  .hotwords{display:none}
  .nav-toggle{display:flex}
  .channels{gap:18px}
  .channelbar__switch{display:none}
  .topbar__inner{min-height:56px}
  .logo__text{font-size:14px}
  .section{padding:48px 0}
  .section--tight{padding:44px 0}
  .page-hero__inner{padding:40px 22px 34px}
  .page-hero__stats{gap:0;flex-direction:column;border-top:1px solid rgba(255,255,255,.12)}
  .stat{border-right:0;padding:12px 0;margin:0;border-bottom:1px solid rgba(255,255,255,.08);width:100%}
  .stat:last-child{border-bottom:0}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .related-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .btn{width:100%}
  .btn--inline{width:auto}
  .breadcrumb{padding-top:16px}
  .faq__a-inner{padding-left:20px}
  .privacy{flex-direction:column;gap:18px;padding:26px 22px}
  .footer__grid{grid-template-columns:1fr;gap:28px;padding:44px 0 30px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  h1{font-size:1.85rem}
  .page-hero h1{font-size:1.8rem}
  .feature__body{padding:26px 20px 28px}
  .news-card__body{padding:18px 18px 20px}
  .cta-band{padding:34px 20px}
  .form{padding:20px}
}

/* roulang page: category2 */
:root{
  --ink:#0D1114;
  --ink-2:#161D21;
  --ink-3:#263038;
  --paper:#F3F5F4;
  --surface:#FFFFFF;
  --brand:#10C9A0;
  --brand-deep:#0A9E7D;
  --brand-soft:#E4F7F1;
  --accent:#FF6B3D;
  --line:#E3E7E5;
  --muted:#6A7472;
  --ok:#12B76A;
  --warn:#F0A020;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:12px;
  --sh-1:0 1px 2px rgba(13,17,20,.06);
  --sh-2:0 14px 36px -16px rgba(13,17,20,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --dur:180ms;
  --container:1240px;
  --font:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::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);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.2;font-weight:700;letter-spacing:-.01em;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
.mono{font-family:var(--font-mono);letter-spacing:.01em;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-weight:600;font-size:15px;line-height:1;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn--sm{height:40px;padding:0 18px;font-size:14px;}
.btn--primary{background:var(--brand);color:var(--ink);box-shadow:var(--sh-1);}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--sh-2);background:#13d7ab;}
.btn--primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn--ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.28);}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn--outline{background:transparent;color:var(--ink);border:1px solid var(--line);}
.btn--outline:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px);}
.btn--block{width:100%;}
.link-text{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:2px;}
.link-text:hover{color:var(--brand-deep);border-color:var(--brand);}

/* ---------- 顶部品牌行 ---------- */
.site-header{position:sticky;top:0;z-index:60;}
.topbar{background:var(--ink);color:#fff;transition:height var(--dur) var(--ease);}
.topbar__inner{display:flex;align-items:center;gap:20px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo__mark{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand) 0%,#0A9E7D 100%);
  position:relative;
}
.logo__mark::after{
  content:"";position:absolute;inset:8px 7px;border-radius:3px;
  background:var(--ink);opacity:.85;
}
.logo__text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.topbar__search{
  display:flex;align-items:center;gap:8px;flex:1 1 auto;max-width:240px;
  height:40px;padding:0 12px;border-radius:var(--r-input);
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.topbar__search:focus-within{border-color:var(--brand);background:rgba(16,201,160,.09);}
.topbar__search svg{flex:0 0 auto;opacity:.6;}
.topbar__search input{
  flex:1 1 auto;min-width:0;height:100%;border:0;background:transparent;color:#fff;font-size:14px;outline:none;
}
.topbar__search input::placeholder{color:rgba(255,255,255,.42);}
.topbar__hot{display:flex;align-items:center;gap:8px;flex:1 1 auto;overflow-x:auto;scrollbar-width:none;}
.topbar__hot::-webkit-scrollbar{display:none;}
.hot-tag{
  flex:0 0 auto;font-size:13px;padding:5px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.18);color:#B9C4C0;white-space:nowrap;
}
.hot-tag:hover{border-color:var(--brand);color:var(--brand);}
.topbar__actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
  border:1px solid rgba(255,255,255,.18);
}
.menu-toggle span{width:18px;height:2px;background:#fff;border-radius:2px;display:block;}

/* ---------- 频道条 ---------- */
.channelbar{
  background:var(--surface);border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.channelbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:52px;}
.channels{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none;}
.channels::-webkit-scrollbar{display:none;}
.channels a{
  position:relative;display:inline-block;padding:0 14px;line-height:52px;
  font-size:15px;color:var(--muted);white-space:nowrap;
}
.channels a:hover{color:var(--brand-deep);}
.channels a.is-active{color:var(--brand-deep);font-weight:700;}
.channels a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;background:var(--brand);border-radius:2px;
}
.channelbar__switch{display:flex;align-items:center;gap:2px;border:1px solid var(--line);border-radius:999px;padding:2px;flex:0 0 auto;}
.channelbar__switch button{
  font-size:13px;padding:5px 14px;border-radius:999px;color:var(--muted);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.channelbar__switch button:hover{color:var(--ink);}
.channelbar__switch button.is-on{background:var(--ink);color:#fff;}
.is-compact .topbar__inner{height:56px;}
.is-compact .channelbar{box-shadow:0 6px 20px -14px rgba(13,17,20,.35);}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:80;pointer-events:none;}
.drawer__mask{
  position:absolute;inset:0;background:rgba(13,17,20,.55);opacity:0;
  transition:opacity 200ms var(--ease);
}
.drawer__panel{
  position:absolute;top:0;right:0;height:100%;width:min(86vw,360px);
  background:var(--surface);padding:22px 20px;overflow-y:auto;
  transform:translateX(100%);transition:transform 260ms var(--ease);
}
.drawer.is-open{pointer-events:auto;}
.drawer.is-open .drawer__mask{opacity:1;}
.drawer.is-open .drawer__panel{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer__title{font-size:16px;font-weight:700;}
.drawer__close{width:44px;height:44px;border-radius:10px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--muted);}
.drawer__close:hover{border-color:var(--brand);color:var(--brand-deep);}
.drawer__group{margin-bottom:22px;}
.drawer__label{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:8px;}
.drawer__group a{display:block;padding:12px 12px;border-radius:10px;font-size:15px;}
.drawer__group a:hover{background:var(--brand-soft);color:var(--brand-deep);}
.drawer__group a.is-active{background:var(--brand-soft);color:var(--brand-deep);font-weight:700;}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;overflow:hidden;
  background-color:var(--ink);
  background-image:linear-gradient(rgba(13,17,20,.80),rgba(13,17,20,.90)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:72px 0 76px;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.75;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:center;}
.eyebrow{
  display:inline-block;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);border:1px solid rgba(16,201,160,.38);border-radius:999px;padding:5px 12px;margin-bottom:18px;
}
.hero__title{font-size:clamp(2.1rem,4.2vw,3.4rem);line-height:1.1;font-weight:800;letter-spacing:-.02em;max-width:15em;}
.hero__sub{font-size:18px;line-height:1.75;color:#C6D0CC;margin-top:18px;max-width:32em;}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero__stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:40px;padding-top:26px;border-top:1px solid rgba(255,255,255,.12);}
.hero__stats li{display:flex;flex-direction:column;gap:2px;}
.hero__stats .num{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--brand);}
.hero__stats .lab{font-size:12.5px;color:#9FAAA6;}
.hero__aside{position:relative;}
.hero__aside img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid rgba(255,255,255,.18);
}
.status-bar{
  position:absolute;left:16px;right:16px;bottom:16px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 16px;border-radius:12px;
  background:rgba(13,17,20,.82);border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(2px);
}
.status-bar__dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px rgba(16,201,160,.18);flex:0 0 auto;}
.status-bar__text{font-size:13px;color:#D7DFDC;display:flex;align-items:center;gap:10px;}
.status-bar__val{font-family:var(--font-mono);font-size:13px;color:var(--brand);}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding:20px 0 0;}
.breadcrumb a:hover{color:var(--brand-deep);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:var(--ink);}

/* ---------- 板块通用 ---------- */
.section{padding:clamp(48px,7vw,104px) 0;}
.section--paper{background:var(--paper);}
.section--surface{background:var(--surface);}
.section--ink{background:var(--ink);color:#fff;}
.section__head{max-width:760px;margin-bottom:44px;}
.section__head--center{margin-left:auto;margin-right:auto;text-align:center;}
.section__title{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.22;font-weight:700;}
.section__desc{font-size:16px;line-height:1.85;color:var(--muted);margin-top:14px;max-width:42em;}
.section--ink .section__desc{color:#AEB9B5;}
.lead{max-width:760px;font-size:17px;line-height:1.9;color:var(--ink);}
.lead + .lead{margin-top:1.2em;}

/* ---------- 时间序列表 ---------- */
.tl-group{margin-top:52px;}
.tl-group:first-of-type{margin-top:8px;}
.tl-group__title{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.12em;color:var(--muted);
  padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:4px;
}
.tl-item{
  display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:22px;align-items:center;
  padding:20px 12px;border-bottom:1px solid var(--line);border-radius:6px;
  transition:background var(--dur) var(--ease);
}
.tl-item:hover{background:var(--brand-soft);}
.tl-item__thumb{
  width:96px;height:96px;border-radius:var(--r-img);overflow:hidden;background:var(--brand-soft);
  position:relative;flex:0 0 auto;
}
.tl-item__thumb img{width:100%;height:100%;object-fit:cover;transition:transform 300ms var(--ease);}
.tl-item:hover .tl-item__thumb img{transform:scale(1.04);}
.tl-item__no{
  position:absolute;left:8px;top:8px;font-family:var(--font-mono);font-size:11px;
  background:rgba(13,17,20,.72);color:#fff;border-radius:6px;padding:2px 7px;
}
.tl-item__body{min-width:0;}
.tl-item__title{font-size:18px;font-weight:700;line-height:1.4;transition:color var(--dur) var(--ease);}
.tl-item:hover .tl-item__title{color:var(--brand-deep);}
.tl-item__desc{font-size:14px;line-height:1.75;color:var(--muted);margin-top:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.tl-item__time{
  font-family:var(--font-mono);font-size:13px;color:var(--brand-deep);white-space:nowrap;
  border:1px solid var(--line);border-radius:999px;padding:5px 12px;background:var(--surface);
}

/* ---------- 交错图文 ---------- */
.zigzag{display:grid;gap:56px;}
.zigzag__row{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:44px;align-items:center;}
.zigzag__row:nth-child(even) .zigzag__media{order:2;}
.zigzag__media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);}
.zigzag__media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.zigzag__no{font-family:var(--font-mono);font-size:13px;color:var(--brand-deep);letter-spacing:.1em;}
.zigzag__title{font-size:22px;font-weight:700;margin:10px 0 12px;line-height:1.35;}
.zigzag__text{font-size:15.5px;line-height:1.85;color:var(--muted);}
.checklist{margin-top:16px;display:grid;gap:10px;}
.checklist li{position:relative;padding-left:22px;font-size:15px;line-height:1.75;}
.checklist li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:10px;border-radius:3px;
  background:var(--brand-soft);border:2px solid var(--brand);
}

/* ---------- 数据区 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid rgba(255,255,255,.12);}
.metrics li{padding:30px 26px;border-right:1px solid rgba(255,255,255,.12);}
.metrics li:last-child{border-right:0;}
.metrics .m-num{font-family:var(--font-mono);font-size:clamp(2rem,3.4vw,2.85rem);font-weight:700;color:var(--brand);line-height:1.1;}
.metrics .m-lab{font-size:15px;color:#DCE3E0;margin-top:10px;}
.metrics .m-note{font-size:12.5px;color:#8A9491;margin-top:8px;line-height:1.7;}

/* ---------- FAQ ---------- */
.faq{max-width:900px;margin:0 auto;}
.faq__item{border-bottom:1px solid var(--line);}
.faq__q{
  width:100%;display:grid;grid-template-columns:44px minmax(0,1fr) 24px;gap:12px;align-items:center;
  text-align:left;padding:22px 0;font-size:17px;font-weight:600;color:var(--ink);
  transition:color var(--dur) var(--ease);
}
.faq__q:hover{color:var(--brand-deep);}
.faq__no{font-family:var(--font-mono);font-size:13px;color:var(--muted);}
.faq__icon{
  position:relative;width:16px;height:16px;justify-self:end;
  transition:transform 240ms var(--ease);
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;background:var(--brand-deep);border-radius:2px;
}
.faq__icon::before{left:0;top:7px;width:16px;height:2px;}
.faq__icon::after{left:7px;top:0;width:2px;height:16px;transition:opacity 240ms var(--ease);}
.faq__item.is-open .faq__icon::after{opacity:0;}
.faq__item.is-open .faq__q{color:var(--brand-deep);}
.faq__a{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease);}
.faq__a-inner{
  position:relative;padding:0 40px 24px 56px;font-size:15px;line-height:1.85;color:var(--muted);
}
.faq__item.is-open .faq__a-inner::before{
  content:"";position:absolute;left:40px;top:4px;bottom:26px;width:3px;border-radius:2px;background:var(--brand);
}

/* ---------- 表单带 ---------- */
.form-wrap{
  max-width:1000px;margin:0 auto;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);padding:clamp(24px,3.4vw,40px);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field--full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:600;color:var(--ink);}
.field .req{color:var(--accent);}
.field input,.field textarea{
  width:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 14px;height:48px;font-size:15px;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.75;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(16,201,160,.2);
}
.field input::placeholder,.field textarea::placeholder{color:#A5ADAA;}
.field .hint{font-size:12.5px;color:var(--muted);line-height:1.7;}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:22px;}
.form-note{font-size:13px;color:var(--muted);max-width:44em;}
.form-success{display:none;text-align:center;padding:28px 12px;}
.form-success__icon{
  width:56px;height:56px;border-radius:50%;background:var(--brand-soft);margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;
}
.form-success__icon svg{width:26px;height:26px;}
.form-success__title{font-size:19px;font-weight:700;}
.form-success__text{font-size:14.5px;color:var(--muted);margin-top:8px;}
.form-wrap.is-done form{display:none;}
.form-wrap.is-done .form-success{display:block;}

/* ---------- 隐私说明 ---------- */
.privacy{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:22px;align-items:flex-start;
  max-width:900px;margin:0 auto;padding:26px 0;
}
.privacy__icon{
  width:56px;height:56px;border-radius:14px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;
}
.privacy__icon svg{width:26px;height:26px;}
.privacy p{font-size:14px;line-height:1.8;color:var(--muted);}
.privacy p + p{margin-top:10px;}

/* ---------- 底部入口带 ---------- */
.quick-links{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.quick-card{
  display:block;padding:22px;border-radius:var(--r-card);background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.quick-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(16,201,160,.35);}
.quick-card__k{font-family:var(--font-mono);font-size:12px;color:var(--brand-deep);letter-spacing:.1em;}
.quick-card__t{font-size:17px;font-weight:700;margin:10px 0 8px;}
.quick-card__d{font-size:14px;line-height:1.75;color:var(--muted);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;border-top:1px solid rgba(255,255,255,.08);padding:64px 0 28px;margin-top:0;}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer__brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;}
.footer__desc{font-size:14px;line-height:1.8;color:#9FAAA6;margin-top:14px;max-width:28em;}
.footer__col h4{font-size:13px;font-weight:600;color:#8A9491;letter-spacing:.06em;margin-bottom:16px;}
.footer__col ul{display:grid;gap:10px;}
.footer__col ul a{font-size:14.5px;color:#D7DFDC;}
.footer__col ul a:hover{color:var(--brand);}
.footer__col p{font-size:14px;line-height:1.8;color:#9FAAA6;}
.footer__col p + p{margin-top:8px;}
.footer__bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:#8A9491;
}
.footer__bottom a:hover{color:var(--brand);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero__inner{grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:40px;}
  .metrics li{padding:26px 20px;}
}
@media (max-width:1023px){
  .topbar__search{display:none;}
  .menu-toggle{display:inline-flex;}
  .channelbar__inner{height:50px;}
  .channels a{line-height:50px;}
  .hero{padding:60px 0 64px;}
  .hero__inner{grid-template-columns:1fr;gap:36px;}
  .hero__aside{max-width:560px;}
  .zigzag__row{grid-template-columns:1fr;gap:24px;}
  .zigzag__row:nth-child(even) .zigzag__media{order:0;}
  .metrics{grid-template-columns:repeat(2,1fr);}
  .metrics li:nth-child(2){border-right:0;}
  .metrics li:nth-child(1),.metrics li:nth-child(2){border-bottom:1px solid rgba(255,255,255,.12);}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
  .quick-links{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .topbar__hot{display:none;}
  .topbar__inner{height:62px;gap:12px;}
  .logo__text{font-size:15px;}
  .hero{padding:48px 0 52px;}
  .hero__sub{font-size:16.5px;}
  .hero__cta{flex-direction:column;align-items:stretch;}
  .hero__cta .btn{width:100%;}
  .hero__stats{gap:22px;}
  .breadcrumb{padding-top:16px;}
  .tl-item{grid-template-columns:64px minmax(0,1fr);gap:14px;padding:18px 6px;}
  .tl-item__thumb{width:64px;height:64px;}
  .tl-item__desc{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
  .tl-item__time{grid-column:2;justify-self:start;font-size:12px;padding:4px 10px;}
  .tl-item__title{font-size:16.5px;}
  .metrics{grid-template-columns:1fr;}
  .metrics li{border-right:0;border-bottom:1px solid rgba(255,255,255,.12);padding:22px 4px;}
  .metrics li:last-child{border-bottom:0;}
  .form-grid{grid-template-columns:1fr;}
  .faq__q{grid-template-columns:34px minmax(0,1fr) 20px;font-size:16px;padding:18px 0;}
  .faq__a-inner{padding:0 8px 22px 46px;}
  .faq__item.is-open .faq__a-inner::before{left:32px;}
  .privacy{grid-template-columns:1fr;gap:14px;}
  .footer__grid{grid-template-columns:1fr;gap:28px;}
  .footer__bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .hero__stats{flex-direction:column;gap:14px;}
  .section__head{margin-bottom:30px;}
}

/* roulang page: category3 */
:root{
  --ink:#0D1114;
  --ink-2:#161D21;
  --ink-3:#263038;
  --paper:#F3F5F4;
  --surface:#FFFFFF;
  --brand:#10C9A0;
  --brand-deep:#0A9E7D;
  --brand-soft:#E4F7F1;
  --accent:#FF6B3D;
  --line:#E3E7E5;
  --muted:#6A7472;
  --ok:#12B76A;
  --warn:#F0A020;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:12px;
  --r-sheet:18px;
  --sh-1:0 1px 2px rgba(13,17,20,.06);
  --sh-2:0 14px 36px -16px rgba(13,17,20,.24);
  --ease:cubic-bezier(.2,.7,.2,1);
  --t:180ms;
  --font:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::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);
  background:var(--paper);
  text-align:left;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(16,201,160,.25)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 var(--r-btn) 0;z-index:200}
.skip-link:focus{left:0}

/* ---------- 按钮 / 徽章 / 文字链 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.btn--primary{background:var(--brand);color:var(--ink);box-shadow:var(--sh-1)}
.btn--primary:hover{background:#0FBB94;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand-deep);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(0)}
.btn--sm{height:40px;padding:0 16px;font-size:14px}
.btn--block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;font-weight:600;line-height:1.6;
}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:999px;
  border:1px solid var(--line);color:var(--muted);
  font-size:12px;line-height:1.7;
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.link-more:hover{color:var(--brand-deep);border-bottom-color:var(--brand)}
.mono{font-family:var(--mono);letter-spacing:.01em}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60}
.brandbar{background:var(--ink);color:#fff;transition:padding var(--t) var(--ease)}
.brandbar__inner{display:flex;align-items:center;gap:20px;min-height:56px;padding-top:8px;padding-bottom:8px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo__mark{
  width:22px;height:22px;border-radius:6px;
  background:linear-gradient(135deg,var(--brand) 0%,#067F63 100%);
  position:relative;flex:0 0 auto;
}
.logo__mark::after{
  content:"";position:absolute;inset:6px 6px auto 6px;height:2px;border-radius:2px;background:rgba(13,17,20,.75);
}
.logo__text{font-size:16px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.brandbar__tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.search{position:relative;display:flex;align-items:center}
.search__icon{
  position:absolute;left:12px;width:16px;height:16px;
  fill:none;stroke:#8E9A97;stroke-width:1.8;stroke-linecap:round;
}
.search__input{
  width:240px;height:38px;padding:0 14px 0 34px;
  border-radius:999px;border:1px solid var(--ink-3);
  background:var(--ink-2);color:#fff;font-size:14px;
  transition:border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.search__input::placeholder{color:#7C8885}
.search__input:focus{outline:none;border-color:var(--brand);background:#101820}
.hotwords{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none}
.hotwords::-webkit-scrollbar{display:none}
.hotwords a{
  display:inline-block;padding:5px 12px;border-radius:999px;
  border:1px solid var(--ink-3);font-size:13px;color:#C6D0CC;white-space:nowrap;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.hotwords a:hover{border-color:var(--brand);color:var(--brand)}
.brandbar__cta{flex:0 0 auto}
.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--ink-3);
  background:transparent;border-radius:var(--r-btn);cursor:pointer;
  padding:0;place-items:center;gap:4px;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:#fff;margin:3px auto;transition:transform var(--t) var(--ease)}

.channelbar{background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow var(--t) var(--ease),background var(--t) var(--ease)}
.channelbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:48px}
.channels{display:flex;align-items:center;gap:26px;overflow-x:auto;scrollbar-width:none}
.channels::-webkit-scrollbar{display:none}
.channels a{
  display:inline-block;padding:12px 0;font-size:15px;color:var(--muted);
  border-bottom:2px solid transparent;white-space:nowrap;
  transition:color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.channels a:hover{color:var(--ink)}
.channels a.is-active{color:var(--brand-deep);font-weight:600;border-bottom-color:var(--brand)}
.channelbar__switch{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.channelbar__switch button{
  padding:5px 12px;border-radius:999px;border:1px solid var(--line);
  background:transparent;font-size:13px;color:var(--muted);cursor:pointer;
  transition:all var(--t) var(--ease);
}
.channelbar__switch button:hover{border-color:var(--brand);color:var(--brand-deep)}
.channelbar__switch button.is-on{background:var(--brand-soft);border-color:transparent;color:var(--brand-deep);font-weight:600}

.site-header.is-stuck{box-shadow:0 8px 22px -18px rgba(13,17,20,.5)}
.site-header.is-stuck .brandbar__inner{min-height:48px;padding-top:4px;padding-bottom:4px}
.site-header.is-stuck .logo__text{font-size:15px}
.site-header.is-stuck .hotwords{display:none}
.site-header.is-stuck .channelbar{background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom-color:var(--line)}
.site-header.is-stuck .channels a{padding:10px 0;font-size:14px}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:120;pointer-events:none}
.drawer__mask{position:absolute;inset:0;background:rgba(13,17,20,.55);opacity:0;transition:opacity 200ms var(--ease)}
.drawer__panel{
  position:absolute;top:0;right:0;height:100%;width:480px;max-width:100%;
  background:var(--surface);display:flex;flex-direction:column;
  border-radius:var(--r-sheet) 0 0 var(--r-sheet);
  transform:translateX(100%);transition:transform 260ms var(--ease);
  overflow-y:auto;
}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer__mask{opacity:1}
.drawer.is-open .drawer__panel{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 24px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--surface);z-index:2}
.drawer__title{font-size:17px;font-weight:700}
.drawer__close{width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);background:transparent;cursor:pointer;font-size:18px;line-height:1;transition:all var(--t) var(--ease)}
.drawer__close:hover{border-color:var(--brand);color:var(--brand-deep)}
.drawer__body{padding:22px 24px 32px;display:grid;gap:22px}
.drawer__group h4{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:10px}
.drawer__links{display:grid;gap:2px}
.drawer__links a{padding:11px 0;border-bottom:1px solid var(--line);font-size:15px;transition:color var(--t) var(--ease)}
.drawer__links a:hover{color:var(--brand-deep)}

/* ---------- 面包屑 ---------- */
.breadcrumb{background:var(--surface);border-bottom:1px solid var(--line)}
.breadcrumb__inner{display:flex;align-items:center;gap:8px;padding:14px 24px;font-size:13px;color:var(--muted);max-width:1240px;margin:0 auto;flex-wrap:wrap}
.breadcrumb a{transition:color var(--t) var(--ease)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb__sep{color:#C3CBC8}
.breadcrumb__current{color:var(--ink)}

/* ---------- Hero ---------- */
.hero{background:var(--surface);border-bottom:1px solid var(--line);padding:44px 0 48px}
.hero__inner{max-width:860px}
.hero__title{
  font-size:clamp(2rem,4.4vw,3.2rem);
  line-height:1.1;font-weight:800;letter-spacing:-.02em;
  margin:16px 0 0;
}
.hero__lead{margin-top:16px;font-size:17px;color:#39434180;max-width:760px}
.hero__lead{color:#39434A}
.hero__note{margin-top:20px;font-size:15px;line-height:1.9;color:var(--muted);max-width:760px}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero__stats{
  display:flex;flex-wrap:wrap;margin-top:34px;
  border-top:1px solid var(--line);padding-top:22px;gap:0;
}
.stat{flex:1 1 180px;padding-right:24px;position:relative}
.stat + .stat{padding-left:24px;border-left:1px solid var(--line)}
.stat__num{font-family:var(--mono);font-size:clamp(1.5rem,3vw,2rem);font-weight:600;line-height:1.2}
.stat__label{font-size:13px;color:var(--muted);margin-top:4px}
.hero__caliber{margin-top:14px;font-size:12px;color:#93A09C}

/* ---------- 主体双栏 ---------- */
.layout{
  display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:24px;align-items:start;
  padding-top:56px;padding-bottom:96px;
}
.layout__main{display:grid;gap:72px;min-width:0}
.layout__side{position:sticky;top:118px;display:grid;gap:16px}

.section__head{margin-bottom:24px}
.section__title{font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section__title .mark{display:block;width:44px;height:4px;border-radius:4px;background:var(--brand);margin-bottom:14px}
.section__desc{margin-top:12px;font-size:15px;color:var(--muted);max-width:720px}

/* 症状条目卡 */
.symptoms{display:grid;gap:12px}
.symptom{
  display:flex;gap:16px;padding:20px 22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),transform var(--t) var(--ease);
}
.symptom:hover{border-color:rgba(16,201,160,.35);box-shadow:var(--sh-2);transform:translateY(-1px)}
.symptom__num{
  font-family:var(--mono);font-size:13px;font-weight:600;color:var(--brand-deep);
  flex:0 0 auto;padding-top:2px;min-width:26px;
}
.symptom__title{font-size:17px;font-weight:700;line-height:1.5}
.symptom__text{margin-top:6px;font-size:15px;color:#3D474B}
.symptom__hint{
  display:inline-block;margin-top:10px;padding:4px 12px;border-radius:999px;
  background:var(--paper);color:var(--muted);font-size:13px;
}

/* 流程 */
.flow{display:grid;gap:0;border-top:1px solid var(--line)}
.flow__step{
  display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--line);
  transition:background var(--t) var(--ease);
}
.flow__step:hover{background:rgba(255,255,255,.75)}
.flow__num{
  font-family:var(--mono);font-size:13px;font-weight:600;
  color:var(--ink);background:var(--brand-soft);border-radius:999px;
  width:40px;height:40px;display:grid;place-items:center;flex:0 0 auto;
}
.flow__title{font-size:17px;font-weight:700}
.flow__text{margin-top:6px;font-size:15px;color:#3D474B;max-width:620px}
.flow__figure{margin-top:24px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);background:var(--paper);aspect-ratio:16/9}
.flow__figure img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.flow__figure:hover img{transform:scale(1.03)}
.flow__cap{margin-top:10px;font-size:13px;color:var(--muted)}

/* 场景卡 */
.scenes{display:grid;grid-template-columns:1.15fr .85fr;gap:16px}
.scene{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;display:flex;flex-direction:column;gap:14px;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),transform var(--t) var(--ease);
}
.scene:hover{border-color:rgba(16,201,160,.35);box-shadow:var(--sh-2);transform:translateY(-1px)}
.scene--visual{padding:0;overflow:hidden}
.scene__img{aspect-ratio:16/9;overflow:hidden}
.scene__img img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.scene--visual:hover .scene__img img{transform:scale(1.03)}
.scene__body{padding:0 24px 24px}
.scene--visual .scene__body{padding-top:20px}
.scene__title{font-size:18px;font-weight:700}
.scene__text{margin-top:8px;font-size:15px;color:#3D474B}
.scene__points{margin-top:14px;display:grid;gap:8px}
.scene__points li{position:relative;padding-left:18px;font-size:14px;color:var(--muted)}
.scene__points li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:2px;border-radius:2px;background:var(--brand)}

/* FAQ */
.faq{max-width:900px}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item:first-child{border-top:1px solid var(--line)}
.faq__q{margin:0}
.faq__btn{
  width:100%;display:flex;align-items:flex-start;gap:16px;
  padding:20px 0;background:transparent;border:0;cursor:pointer;text-align:left;
  transition:color var(--t) var(--ease);
}
.faq__btn:hover .faq__text{color:var(--brand-deep)}
.faq__num{font-family:var(--mono);font-size:13px;color:var(--muted);flex:0 0 auto;padding-top:5px}
.faq__text{font-size:17px;font-weight:600;line-height:1.6;flex:1 1 auto;transition:color var(--t) var(--ease)}
.faq__icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);
  position:relative;margin-top:2px;transition:transform 240ms var(--ease),border-color var(--t) var(--ease);
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--muted);
  transform:translate(-50%,-50%);transition:background var(--t) var(--ease),opacity var(--t) var(--ease);
}
.faq__icon::before{width:11px;height:2px;border-radius:2px}
.faq__icon::after{width:2px;height:11px;border-radius:2px}
.faq__btn[aria-expanded="true"] .faq__icon{transform:rotate(135deg);border-color:var(--brand)}
.faq__btn[aria-expanded="true"] .faq__icon::before,
.faq__btn[aria-expanded="true"] .faq__icon::after{background:var(--brand-deep)}
.faq__a{
  max-height:0;overflow:hidden;transition:max-height 240ms var(--ease);
}
.faq__a-inner{
  padding:0 0 22px 42px;font-size:15px;line-height:1.85;color:#3D474B;
  border-left:3px solid transparent;margin-left:-3px;
}
.faq__item.is-open .faq__a-inner{border-left-color:var(--brand);padding-left:19px;margin-left:0}

/* 表单带 */
.formband{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;
}
.formband__grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column}
.field--full{grid-column:1/-1}
.field__label{font-size:13px;font-weight:600;margin-bottom:8px}
.field__label .req{color:var(--accent);margin-left:4px}
.field__input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-input);
  border:1px solid var(--line);background:var(--surface);color:var(--ink);
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
select.field__input{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
textarea.field__input{height:auto;min-height:116px;padding:12px 14px;line-height:1.75;resize:vertical}
.field__input::placeholder{color:#9AA5A1}
.field__input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(16,201,160,.18)}
.field.is-error .field__input{border-color:var(--accent)}
.field.is-error .field__input:focus{box-shadow:0 0 0 3px rgba(255,107,61,.18)}
.field__error{display:none;margin-top:8px;font-size:12px;color:var(--accent)}
.field.is-error .field__error{display:block}
.field__hint{margin-top:8px;font-size:12px;color:var(--muted)}
.formband__foot{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px}
.formband__tip{font-size:13px;color:var(--muted);max-width:420px}
.form-success{
  display:none;align-items:flex-start;gap:14px;margin-top:18px;padding:18px 20px;
  border:1px solid rgba(18,183,106,.3);background:rgba(18,183,106,.07);border-radius:var(--r-card);
}
.form-success.is-on{display:flex}
.form-success__icon{width:32px;height:32px;border-radius:999px;background:var(--ok);flex:0 0 auto;position:relative}
.form-success__icon::after{content:"";position:absolute;left:10px;top:8px;width:10px;height:6px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg)}
.form-success__title{font-size:15px;font-weight:700}
.form-success__text{font-size:14px;color:var(--muted);margin-top:4px}

/* 隐私说明 */
.privacy{
  display:flex;gap:20px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px;
}
.privacy__icon{
  width:44px;height:44px;flex:0 0 auto;border-radius:12px;background:var(--brand-soft);position:relative;
}
.privacy__icon::before{
  content:"";position:absolute;left:50%;top:12px;transform:translateX(-50%);
  width:16px;height:12px;border:2px solid var(--brand-deep);border-radius:3px;
}
.privacy__icon::after{
  content:"";position:absolute;left:50%;top:6px;transform:translateX(-50%);
  width:12px;height:9px;border:2px solid var(--brand-deep);border-bottom:0;border-radius:8px 8px 0 0;
}
.privacy__text{font-size:14px;line-height:1.85;color:var(--muted)}
.privacy__text strong{color:var(--ink)}

/* 侧栏 */
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;
}
.side-card__title{font-size:14px;font-weight:700;margin-bottom:12px}
.side-search{display:grid;gap:10px}
.side-search .field__input{height:44px}
.side-list{display:grid;gap:2px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;
  transition:color var(--t) var(--ease);
}
.side-list a:last-child{border-bottom:0}
.side-list a:hover{color:var(--brand-deep)}
.side-list a span:last-child{font-family:var(--mono);font-size:12px;color:var(--muted)}
.side-cta{background:var(--ink);color:#fff;border-color:var(--ink-3)}
.side-cta .side-card__title{color:#fff}
.side-cta p{font-size:14px;color:#B9C4C0;margin-bottom:14px}
.side-cta .side-meta{font-size:12px;color:#8E9A97;margin-top:12px;margin-bottom:0}
.side-collapse__btn{
  display:none;width:100%;height:44px;margin-bottom:10px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:transparent;color:var(--ink);font-size:14px;cursor:pointer;
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.side-collapse__btn:hover{border-color:var(--brand);color:var(--brand-deep)}

/* 页脚 */
.site-footer{background:var(--ink);color:#fff;border-top:1px solid rgba(255,255,255,.08);padding:56px 0 24px;margin-top:0}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px}
.footer__brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700}
.footer__desc{margin-top:14px;font-size:14px;line-height:1.85;color:#B9C4C0;max-width:320px}
.footer__col h4{font-size:13px;font-weight:600;color:#8E9A97;margin-bottom:14px}
.footer__col ul{display:grid;gap:10px}
.footer__col a{font-size:14px;color:#D5DDDA;transition:color var(--t) var(--ease)}
.footer__col a:hover{color:var(--brand)}
.footer__col p{font-size:14px;color:#B9C4C0;line-height:1.8}
.footer__col p + p{margin-top:8px}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:#8E9A97;
}
.footer__bottom a{transition:color var(--t) var(--ease)}
.footer__bottom a:hover{color:var(--brand)}

/* 入场动画 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms 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}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .layout__side{top:104px}
  .search__input{width:190px}
}
@media (max-width:1023px){
  .hotwords{display:none}
  .search{display:none}
  .hamburger{display:block}
  .layout{grid-template-columns:1fr;gap:40px;padding-bottom:72px}
  .layout__side{position:static;top:auto;grid-template-columns:1fr 1fr;align-items:start}
  .layout__side .side-card:first-child{grid-column:1/-1}
  .side-collapse__btn{display:block}
  .side-list{max-height:0;overflow:hidden;transition:max-height 240ms var(--ease)}
  .side-collapse.is-open .side-list{max-height:420px}
  .scenes{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .brandbar__inner{gap:12px;min-height:56px}
  .logo__text{font-size:15px;white-space:normal;line-height:1.35;max-width:160px}
  .brandbar__cta{display:none}
  .hero{padding:32px 0 36px}
  .hero__actions .btn{width:100%}
  .hero__stats{flex-direction:column;gap:16px}
  .stat{padding:0;flex:1 1 auto}
  .stat + .stat{padding-left:0;border-left:0;border-top:1px solid var(--line);padding-top:16px}
  .layout{padding-top:40px;padding-bottom:56px}
  .layout__main{gap:48px}
  .layout__side{grid-template-columns:1fr}
  .formband{padding:20px}
  .formband__grid{grid-template-columns:1fr}
  .formband__foot .btn{width:100%}
  .symptom{padding:18px}
  .faq__a-inner{padding-left:0;margin-left:0}
  .faq__item.is-open .faq__a-inner{padding-left:16px}
  .privacy{flex-direction:column;gap:14px}
  .drawer__panel{width:100%;border-radius:0}
  .site-footer{padding:44px 0 20px}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .scene--visual{border-radius:var(--r-card)}
}
@media (max-width:520px){
  .channels{gap:18px}
  .channels a{font-size:14px}
  .section__title{font-size:1.3rem}
  .symptom{flex-direction:column;gap:10px}
  .flow__step{flex-direction:column;gap:12px}
  .channelbar__switch{display:none}
}