/* roulang page: index */
/* ============ 设计令牌 ============ */
:root{
  --ink:#14181A;
  --ink-2:#2A3134;
  --line:rgba(20,24,26,.10);
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --accent:#E0562A;
  --accent-press:#B03F18;
  --accent-soft:#FBE9E1;
  --jade:#1F5C4E;
  --jade-soft:#E4EEEA;
  --text:#1B1D1C;
  --muted:#5F6663;
  --faint:#8B918D;
  --ok:#2E7D5B;
  --warn:#C08A2E;
  --err:#B4452F;
  --info:#3A6E8F;
  --ok-soft:rgba(46,125,91,.08);
  --warn-soft:rgba(192,138,46,.08);
  --err-soft:rgba(180,69,47,.08);
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,monospace;
  --r-card:6px;
  --r-btn:4px;
  --sh-1:0 1px 2px rgba(20,24,26,.04);
  --sh-2:0 8px 24px -12px rgba(20,24,26,.18);
  --ease:180ms cubic-bezier(.2,.7,.2,1);
  --side:240px;
}

/* ============ 基础 ============ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:28px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.skip{
  position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;border-radius:var(--r-btn);z-index:200;
}
.skip:focus{left:12px;top:12px}

/* ============ 侧边 App Shell ============ */
.side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:var(--ink);color:#DFDCD6;
  display:flex;flex-direction:column;
  padding:0 16px 20px;
  z-index:70;
}
.side__brand{
  height:88px;display:flex;align-items:center;gap:10px;
  padding:0 6px;flex:0 0 auto;
}
.side__brand .bar{width:3px;height:24px;background:var(--accent);border-radius:2px}
.side__brand .mark{font-weight:800;font-size:20px;letter-spacing:.02em;color:#fff}
.side__brand .sub{font-size:11px;letter-spacing:.06em;color:var(--faint);line-height:1.3}
.side__group{margin-top:14px}
.side__label{
  font-size:11px;letter-spacing:.12em;color:var(--faint);
  padding:0 10px 8px;font-family:var(--mono);
}
.side__nav{display:flex;flex-direction:column;gap:2px}
.side__link{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;border-radius:var(--r-btn);
  font-size:14.5px;color:#C9C6C0;transition:background var(--ease),color var(--ease);
}
.side__link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:22px;background:var(--accent);border-radius:2px;
  transition:transform 200ms cubic-bezier(.2,.7,.2,1);transform-origin:center;
}
.side__link:hover{background:rgba(255,255,255,.04);color:#fff}
.side__link.is-active{background:rgba(255,255,255,.06);color:#fff}
.side__link.is-active::before{transform:translateY(-50%) scaleY(1)}
.side__link .dot{
  width:6px;height:6px;border-radius:50%;background:var(--faint);flex:0 0 auto;
}
.side__link.is-active .dot{background:var(--accent)}
.side__foot{margin-top:auto;padding-top:18px}
.plate-mini{
  border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card);
  padding:12px;background:rgba(255,255,255,.03);
}
.plate-mini__top{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.plate-mini__dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(46,125,91,.18)}
.plate-mini__txt{font-family:var(--mono);font-size:11px;color:#A9A6A0;letter-spacing:.02em}
.plate-mini__addr{
  font-family:var(--mono);font-size:12px;color:#F0EEE9;
  background:rgba(255,255,255,.06);border-radius:var(--r-btn);
  padding:8px 10px;word-break:break-all;
}
.plate-mini__btn{
  margin-top:8px;width:100%;height:34px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.08);color:#fff;font-size:12.5px;
  transition:background var(--ease);
}
.plate-mini__btn:hover{background:var(--accent)}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:60;
  height:56px;background:var(--paper-2);border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar .brandline{display:flex;align-items:center;gap:8px}
.topbar .bar{width:3px;height:22px;background:var(--accent);border-radius:2px}
.topbar .mark{font-weight:800;font-size:17px;color:var(--ink)}
.topbar .sub{font-size:10px;letter-spacing:.06em;color:var(--faint)}
.topbar__burger{
  width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;
  align-items:center;gap:5px;border-radius:var(--r-btn);
}
.topbar__burger span{display:block;width:20px;height:2px;background:var(--ink);transition:var(--ease)}
.scrim{
  position:fixed;inset:0;background:rgba(20,24,26,.45);opacity:0;pointer-events:none;
  transition:opacity var(--ease);z-index:65;
}
.scrim.is-on{opacity:1;pointer-events:auto}

/* ============ 主内容 ============ */
.main{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column}
.container{width:min(1240px,100% - 80px);margin-inline:auto}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--paper2{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.sec-head{max-width:820px;margin-bottom:48px}
.sec-num{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.14em;display:block;margin-bottom:10px}
.sec-head h2{font-size:32px;line-height:40px;font-weight:700;letter-spacing:-.01em}
.sec-head p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:660px}
.sec-head--row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;max-width:none}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 28px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.btn__arrow{transition:transform var(--ease)}
.btn--primary{background:var(--ink);color:#fff}
.btn--primary:hover{background:var(--accent)}
.btn--primary:hover .btn__arrow{transform:translateX(4px)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);background:var(--paper-2)}
.btn--light{background:#fff;color:var(--ink)}
.btn--light:hover{background:var(--accent);color:#fff}
.btn--light:hover .btn__arrow{transform:translateX(4px)}
.btn--sm{height:40px;padding:0 20px;font-size:14px}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.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(--ease),border-color var(--ease);
}
.link-more:hover{color:var(--accent);border-color:var(--accent)}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em;
}
.badge--soft{background:var(--accent-soft);color:var(--accent-press)}
.badge--jade{background:var(--jade-soft);color:var(--jade)}
.badge--ok{background:var(--ok-soft);color:var(--ok)}
.badge--warn{background:var(--warn-soft);color:var(--warn)}
.badge--err{background:var(--err-soft);color:var(--err)}
.badge--info{background:rgba(58,110,143,.08);color:var(--info)}
.badge--plain{background:#F0EEE9;color:var(--muted)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero__bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center right / cover no-repeat;
}
.hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(245,243,238,.98) 0%,rgba(245,243,238,.95) 40%,rgba(245,243,238,.55) 72%,rgba(245,243,238,.82) 100%);
}
.hero__inner{
  position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.72fr);
  gap:56px;align-items:center;padding:88px 0 76px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);
  font-size:12px;letter-spacing:.1em;color:var(--jade);
  background:var(--jade-soft);border-radius:999px;padding:6px 12px;margin-bottom:20px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--ok);display:inline-block}
.hero h1{
  font-size:clamp(32px,4.4vw,56px);line-height:1.12;font-weight:800;letter-spacing:-.02em;
  max-width:15em;
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero__sub{margin-top:20px;font-size:17px;color:var(--muted);max-width:30em;line-height:30px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero__meta{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--faint);font-family:var(--mono)}

.plate{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);padding:24px;
}
.plate__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.plate__title{font-size:14px;font-weight:700}
.plate__status{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--ok);font-weight:600}
.plate__status i{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(46,125,91,.16)}
.plate__rows{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.plate__row{display:flex;justify-content:space-between;gap:16px;font-size:13.5px}
.plate__key{color:var(--faint);flex:0 0 auto}
.plate__val{font-family:var(--mono);font-size:13px;color:var(--ink-2);text-align:right;word-break:break-all}
.plate__addr{
  margin-top:18px;background:var(--paper);border:1px dashed var(--line);border-radius:var(--r-btn);
  padding:12px 14px;font-family:var(--mono);font-size:13px;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.plate__copy{
  height:32px;padding:0 14px;border-radius:var(--r-btn);background:var(--ink);color:#fff;
  font-size:12.5px;transition:background var(--ease);flex:0 0 auto;
}
.plate__copy:hover{background:var(--accent)}
.plate__foot{margin-top:14px;font-family:var(--mono);font-size:11.5px;color:var(--faint)}

/* ============ 信任条 ============ */
.trust{border-bottom:1px solid var(--line);background:var(--paper-2)}
.trust__inner{padding:36px 0;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust__item{padding-right:20px;border-right:1px solid var(--line)}
.trust__item:last-child{border-right:0;padding-right:0}
.trust__num{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--ink);letter-spacing:-.02em}
.trust__num span{font-size:16px;color:var(--accent);margin-left:2px}
.trust__label{margin-top:6px;font-size:13.5px;color:var(--muted)}
.trust__tags{display:flex;flex-wrap:wrap;gap:10px;padding-bottom:32px}

/* ============ 分类索引卡 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.cat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,86,42,.35)}
.cat-card__img{aspect-ratio:16/10;overflow:hidden;background:#EFEDE8}
.cat-card__img img{width:100%;height:100%;object-fit:cover}
.cat-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.cat-card__no{font-family:var(--mono);font-size:12px;color:var(--faint)}
.cat-card h3{font-size:17px;font-weight:700;line-height:26px}
.cat-card p{font-size:14px;color:var(--muted);line-height:24px}
.cat-card__foot{margin-top:auto;font-size:13px;font-weight:600;color:var(--accent-press);font-family:var(--mono)}

/* ============ 功能分组 ============ */
.feature-layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,2fr);gap:56px}
.feature-layout__left{position:sticky;top:40px;align-self:start}
.feature-layout__left h2{font-size:32px;line-height:40px;font-weight:700}
.feature-layout__left p{margin-top:14px;color:var(--muted);font-size:15px}
.grid-uneven{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feature-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,86,42,.35)}
.feature-card--wide{grid-column:1 / -1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:32px;align-items:center}
.feature-card__no{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.12em}
.feature-card h3{margin-top:12px;font-size:22px;line-height:30px;font-weight:600}
.feature-card p{margin-top:12px;font-size:15px;color:var(--muted);line-height:26px}
.feature-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.feature-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2)}
.feature-list li::before{content:"";width:6px;height:6px;margin-top:10px;border-radius:1px;background:var(--accent);flex:0 0 auto}
.feature-card__media{aspect-ratio:16/9;border-radius:var(--r-card);overflow:hidden;background:#EFEDE8}
.feature-card__media img{width:100%;height:100%;object-fit:cover}

/* ============ 使用场景步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.step{position:relative;padding:0 26px}
.step:first-child{padding-left:0}
.step:last-child{padding-right:0}
.step::after{
  content:"";position:absolute;top:13px;left:calc(50% + 26px);right:-26px;height:1px;background:var(--line);
}
.step:last-child::after{display:none}
.step__no{
  position:relative;z-index:1;display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;border-radius:50%;border:1px solid var(--line);background:var(--paper-2);
  font-family:var(--mono);font-size:12px;color:var(--accent-press);margin-bottom:16px;
}
.step h3{font-size:17px;font-weight:700}
.step p{margin-top:10px;font-size:14px;color:var(--muted);line-height:24px}

/* ============ 成功案例 ============ */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.case-card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,86,42,.35)}
.case-card__img{aspect-ratio:16/9;background:#EFEDE8}
.case-card__img img{width:100%;height:100%;object-fit:cover}
.case-card__body{padding:24px;display:flex;flex-direction:column;gap:14px}
.case-metric{display:flex;align-items:baseline;gap:10px}
.case-metric strong{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--ink);letter-spacing:-.02em}
.case-metric span{font-size:13px;color:var(--muted)}
.case-quote{font-size:14.5px;color:var(--muted);line-height:25px;border-left:3px solid var(--jade-soft);padding-left:14px}
.case-tags{display:flex;gap:8px;flex-wrap:wrap}

/* ============ 服务方案对照 ============ */
.plan-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:var(--paper-2);box-shadow:var(--sh-1)}
.plan{width:100%;border-collapse:collapse;min-width:760px}
.plan th,.plan td{padding:18px 22px;text-align:left;border-bottom:1px solid var(--line);font-size:14.5px}
.plan thead th{font-size:13px;font-weight:600;color:var(--faint);letter-spacing:.04em;background:var(--paper)}
.plan tbody th{font-weight:600;color:var(--ink);width:26%}
.plan td{color:var(--muted)}
.plan .is-feature{background:var(--accent-soft);color:var(--ink);border-bottom-color:rgba(224,86,42,.18)}
.plan thead .is-feature{border-top:2px solid var(--accent);background:var(--accent-soft);color:var(--accent-press)}
.plan tbody tr:last-child th,.plan tbody tr:last-child td{border-bottom:0}
.plan .yes{color:var(--ok);font-weight:600}
.plan .no{color:var(--faint)}
.plan__cta{display:flex;gap:10px;flex-wrap:wrap;justify-content:space-between;align-items:center;padding:20px 22px;border-top:1px solid var(--line);background:var(--paper)}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  background:var(--paper-2);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(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(224,86,42,.35)}
.news-card__cover{display:block;aspect-ratio:16/9;background:#EFEDE8;overflow:hidden}
.news-card__cover img{width:100%;height:100%;object-fit:cover}
.news-card__ph{
  display:flex;align-items:center;justify-content:center;height:100%;
  background:#EFEDE8;color:var(--faint);font-family:var(--mono);font-size:13px;letter-spacing:.16em;
}
.news-card__body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-card__title{font-size:17px;line-height:26px;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__title a:hover{color:var(--accent)}
.news-card__ex{
  font-size:14px;color:var(--muted);line-height:24px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-family:var(--mono);font-size:12px;color:var(--faint);
}
.news-card__meta a{color:var(--accent-press);font-family:var(--sans);font-weight:600}
.news-card__meta a:hover{color:var(--accent)}

.empty{
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--paper-2);
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;padding:32px;
}
.empty__icon{width:40px;height:40px;border:1px solid var(--line);border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:14px;color:var(--faint)}
.empty p{color:var(--muted);font-size:14.5px}

/* ============ FAQ ============ */
.faq{max-width:760px;margin:0 auto}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item:first-child{border-top:1px solid var(--line)}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;font-size:17px;font-weight:600;text-align:left;color:var(--ink);
}
.faq__q:hover{color:var(--accent-press)}
.faq__arrow{
  width:20px;height:20px;flex:0 0 auto;position:relative;transition:transform 200ms cubic-bezier(.2,.7,.2,1);
}
.faq__arrow::before,.faq__arrow::after{
  content:"";position:absolute;top:9px;left:3px;width:14px;height:1.5px;background:var(--ink-2);
}
.faq__arrow::after{transform:rotate(90deg);transition:transform 200ms cubic-bezier(.2,.7,.2,1)}
.faq__item.is-open .faq__arrow::after{transform:rotate(0)}
.faq__item.is-open .faq__arrow{transform:rotate(180deg)}
.faq__a{display:none;padding:0 0 22px;font-size:15px;color:var(--muted);line-height:26px;max-width:660px}
.faq__item.is-open .faq__a{display:block}
.faq__more{margin-top:28px;text-align:center}

/* ============ 底部 CTA ============ */
.cta-band{background:var(--ink);color:#fff}
.cta-band__inner{
  padding:56px 0;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;line-height:36px;font-weight:700;max-width:22em}
.cta-band p{margin-top:10px;color:#A9A6A0;font-size:14.5px;max-width:32em}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.footer{background:var(--ink);color:#A9A6A0;margin-top:auto;padding-top:56px}
.footer__brandrow{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer__brand{display:flex;align-items:center;gap:10px}
.footer__brand .bar{width:3px;height:24px;background:var(--accent);border-radius:2px}
.footer__brand .mark{font-weight:800;font-size:20px;color:#fff}
.footer__brand .sub{font-size:11px;letter-spacing:.06em;color:var(--faint);display:block}
.footer__note{font-size:13.5px;color:#9B9892;max-width:22em;line-height:24px}
.footer__cols{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding:40px 0}
.footer__col h3{font-size:13px;font-weight:600;color:#fff;letter-spacing:.06em;margin-bottom:14px}
.footer__col li{margin-bottom:10px}
.footer__col a{font-size:14px;color:#A9A6A0;transition:color var(--ease)}
.footer__col a:hover{color:var(--accent)}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#807D78;font-family:var(--mono);
}

/* ============ 进入视口动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 480ms cubic-bezier(.2,.7,.2,1),transform 480ms cubic-bezier(.2,.7,.2,1)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 断点 ============ */
@media (max-width:1439px){
  .container{width:min(1140px,100% - 64px)}
  .hero__inner{gap:44px}
}
@media (max-width:1279px){
  :root{--side:72px}
  .side{padding:0 10px 16px;align-items:stretch}
  .side__brand{justify-content:center;padding:0}
  .side__brand .sub,.side__label,.side__link span,.side__foot .plate-mini__txt,.side__foot .plate-mini__addr{display:none}
  .side__link{justify-content:center;padding:0}
  .side__link .dot{width:9px;height:9px}
  .plate-mini{padding:10px;display:flex;flex-direction:column;align-items:center;gap:8px}
  .plate-mini__top{margin-bottom:0}
  .plate-mini__btn{width:44px;height:32px;font-size:11px;margin-top:0}
  .cat-grid{grid-template-columns:repeat(3,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  .side{
    transform:translateX(-100%);width:280px;padding:0 16px 20px;
    transition:transform 220ms cubic-bezier(.2,.7,.2,1);
  }
  .side.is-open{transform:translateX(0)}
  .side__brand{justify-content:flex-start;padding:0 6px}
  .side__brand .sub,.side__label,.side__link span,.side__foot .plate-mini__txt,.side__foot .plate-mini__addr{display:block}
  .side__link{justify-content:flex-start;padding:0 12px;height:48px}
  .side__link .dot{width:6px;height:6px}
  .plate-mini{display:block;padding:12px}
  .plate-mini__top{margin-bottom:8px}
  .plate-mini__btn{width:100%;height:34px;font-size:12.5px;margin-top:8px}
  .topbar{display:flex}
  .main{margin-left:0}
  .container{width:min(100% - 40px,760px)}
  .section{padding:72px 0}
  .hero__inner{grid-template-columns:1fr;padding:56px 0 56px;gap:32px}
  .hero h1{max-width:none}
  .trust__inner{grid-template-columns:repeat(2,1fr);gap:20px}
  .trust__item:nth-child(2){border-right:0;padding-right:0}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .feature-layout{grid-template-columns:1fr;gap:28px}
  .feature-layout__left{position:static}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .step{padding:0 20px}
  .step:nth-child(2)::after{display:none}
  .case-grid{grid-template-columns:1fr}
  .footer__cols{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .sec-head{margin-bottom:32px}
  .sec-head h2,.feature-layout__left h2{font-size:26px;line-height:34px}
  .hero__sub{font-size:15.5px;line-height:27px}
  .btn{width:100%;justify-content:center}
  .hero__actions .btn{width:100%}
  .cta-band__actions{width:100%}
  .trust__inner{grid-template-columns:1fr;gap:18px}
  .trust__item{border-right:0;padding-right:0;padding-bottom:16px;border-bottom:1px solid var(--line)}
  .trust__item:last-child{border-bottom:0;padding-bottom:0}
  .cat-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .grid-uneven{grid-template-columns:1fr}
  .feature-card--wide{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:24px}
  .step{padding:0}
  .step::after{display:none}
  .plan__cta{flex-direction:column;align-items:stretch}
  .footer__cols{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;gap:8px}
  .cta-band__inner{padding:44px 0}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink:#14181A;
  --ink-2:#2A3134;
  --line:rgba(20,24,26,.10);
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --paper-3:#EFEDE8;
  --accent:#E0562A;
  --accent-press:#B03F18;
  --accent-soft:#FBE9E1;
  --jade:#1F5C4E;
  --jade-soft:#E4EEEA;
  --text:#1B1D1C;
  --muted:#5F6663;
  --faint:#8B918D;
  --ok:#2E7D5B;
  --warn:#C08A2E;
  --bad:#B4452F;
  --info:#3A6E8F;
  --radius:6px;
  --radius-sm:4px;
  --shadow:0 1px 2px rgba(20,24,26,.04);
  --shadow-hover:0 8px 24px -12px rgba(20,24,26,.18);
  --ease:180ms cubic-bezier(.2,.7,.2,1);
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Courier New",monospace;
  --side-w:240px;
  --side-fold:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--sans);font-size:16px;line-height:1.75;
  color:var(--text);background:var(--paper);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;background:var(--paper-3)}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:200}
.skip:focus{left:12px;top:12px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.mono{font-family:var(--mono)}

/* ---------- 左侧 App Shell ---------- */
.side{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);background:var(--ink);color:rgba(255,255,255,.74);
  display:flex;flex-direction:column;z-index:90;border-right:1px solid rgba(255,255,255,.07);
  transition:transform 220ms cubic-bezier(.2,.7,.2,1);
}
.side__brand{display:flex;align-items:center;gap:10px;height:88px;padding:0 20px;border-bottom:1px solid rgba(255,255,255,.08);flex:0 0 auto}
.side__brand .bar{width:3px;height:24px;background:var(--accent);border-radius:2px;flex:0 0 auto}
.side__brandtext{display:flex;flex-direction:column;line-height:1.15;white-space:nowrap}
.side__brandtext .mark{font-size:20px;font-weight:800;color:#fff;letter-spacing:.04em}
.side__brandtext .sub{font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.52);margin-top:3px}
.side__nav{padding:16px 12px 8px;display:flex;flex-direction:column;gap:2px}
.side__link{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;border-radius:var(--radius-sm);
  font-size:14px;color:rgba(255,255,255,.74);white-space:nowrap;overflow:hidden;
}
.side__link .dot{width:5px;height:5px;border-radius:50%;background:rgba(255,255,255,.26);flex:0 0 auto;transition:background var(--ease)}
.side__link:hover{background:rgba(255,255,255,.04);color:#fff}
.side__link:hover .dot{background:rgba(255,255,255,.6)}
.side__link.is-active{background:rgba(255,255,255,.06);color:#fff}
.side__link.is-active .dot{background:var(--accent)}
.side__link.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;background:var(--accent);border-radius:2px;
}
.side__group{padding:18px 12px 8px;border-top:1px solid rgba(255,255,255,.07);margin-top:8px}
.side__grouptitle{font-size:11px;font-weight:600;letter-spacing:.14em;color:rgba(255,255,255,.34);padding:0 12px 8px;text-transform:uppercase}
.side__anchor{display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;border-radius:var(--radius-sm);font-size:13px;color:rgba(255,255,255,.62);white-space:nowrap}
.side__anchor:hover{background:rgba(255,255,255,.04);color:#fff}
.side__anchor::before{content:"";width:12px;height:1px;background:rgba(255,255,255,.28)}
.side__card{
  margin:auto 12px 20px;padding:14px;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);
  background:rgba(255,255,255,.03);
}
.side__card .label{font-size:11px;letter-spacing:.12em;color:rgba(255,255,255,.38);text-transform:uppercase}
.side__card .addr{
  font-family:var(--mono);font-size:12px;color:#fff;margin-top:8px;word-break:break-all;line-height:1.5;
}
.side__card .row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:12px}
.side__status{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:rgba(255,255,255,.66)}
.side__status i{width:7px;height:7px;border-radius:50%;background:#5FBF92;box-shadow:0 0 0 3px rgba(95,191,146,.16)}
.copybtn{
  font-size:12px;padding:5px 10px;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.86);transition:background var(--ease),border-color var(--ease),color var(--ease);
}
.copybtn:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.copybtn.is-done{background:var(--jade);border-color:var(--jade);color:#fff}

/* ---------- 移动端顶栏与遮罩 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;background:var(--paper-2);
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;padding:0 16px;z-index:95;
}
.topbar__brand{display:flex;align-items:center;gap:8px}
.topbar__brand .bar{width:3px;height:20px;background:var(--accent);border-radius:2px}
.topbar__brand .mark{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.04em}
.burger{width:44px;height:44px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:var(--radius-sm)}
.burger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.scrim{
  position:fixed;inset:0;background:rgba(20,24,26,.45);z-index:85;opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
}
.scrim.is-on{opacity:1;visibility:visible}

/* ---------- 主区域 ---------- */
.main{margin-left:var(--side-w);min-height:60vh}
.footer{margin-left:var(--side-w)}

.crumb{padding:36px 0 0;display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--faint);font-family:var(--mono)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:var(--faint);opacity:.7}
.crumb .cur{color:var(--faint);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-family:var(--sans)}

.article-head{padding:28px 0 26px;border-bottom:1px solid var(--line)}
.article-head__badges{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.08em;background:var(--accent-soft);color:var(--accent-press);
}
.badge--jade{background:var(--jade-soft);color:var(--jade)}
.badge--plain{background:var(--paper-3);color:var(--muted)}
.article-head h1{
  font-size:clamp(28px,3.4vw,42px);line-height:1.22;font-weight:800;letter-spacing:-.015em;color:var(--ink);
  max-width:26ch;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:20px;font-family:var(--mono);font-size:12px;color:var(--faint);
}
.article-meta .k{color:var(--faint)}
.article-meta .v{color:var(--muted)}
.share{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);
  font-size:12px;font-family:var(--sans);color:var(--muted);transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.share:hover{border-color:var(--ink);color:var(--ink);background:var(--paper-2)}
.share.is-done{border-color:var(--ok);color:var(--ok);background:rgba(46,125,91,.08)}

.article-layout{display:grid;grid-template-columns:minmax(0,760px) 260px;gap:56px;padding:48px 0 72px;align-items:start}

.prose{font-size:17px;line-height:1.85;color:var(--text);max-width:760px}
.prose > * + *{margin-top:1.2em}
.prose p{margin:0}
.prose h2{position:relative;font-size:26px;line-height:1.4;font-weight:700;margin:2.2em 0 .9em;padding-left:14px;color:var(--ink);scroll-margin-top:80px}
.prose h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;background:var(--accent);border-radius:2px}
.prose h3{font-size:19px;font-weight:600;line-height:1.5;margin:1.7em 0 .6em;color:var(--ink);scroll-margin-top:80px}
.prose h4{font-size:17px;font-weight:600;margin:1.4em 0 .5em;color:var(--ink-2)}
.prose ul,.prose ol{padding-left:1.35em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin:.45em 0}
.prose li::marker{color:var(--accent)}
.prose blockquote{border-left:3px solid var(--jade);background:var(--jade-soft);padding:16px 20px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--ink-2)}
.prose blockquote p{margin:0}
.prose img{border-radius:var(--radius);margin:1.6em 0;width:100%;height:auto}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:12px;color:var(--faint);text-align:center;margin-top:10px}
.prose a{color:var(--accent-press);border-bottom:1px solid rgba(176,63,24,.35)}
.prose a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.prose code{font-family:var(--mono);font-size:14px;background:var(--paper-3);padding:2px 6px;border-radius:var(--radius-sm)}
.prose pre{font-family:var(--mono);font-size:14px;line-height:1.7;background:var(--ink);color:#E9E7E2;padding:18px 20px;border-radius:var(--radius);overflow-x:auto}
.prose pre code{background:none;padding:0;color:inherit}
.prose table{width:100%;border-collapse:collapse;font-size:15px;display:block;overflow-x:auto;white-space:nowrap}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left}
.prose th{font-size:13px;font-weight:600;color:var(--muted);background:var(--paper-3)}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}

.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;border:1px solid var(--line);font-size:12px;color:var(--muted);background:var(--paper-2)}
.tag:hover{border-color:rgba(224,86,42,.35);color:var(--accent-press)}
.backlist{display:inline-flex;align-items:center;gap:6px;margin-top:26px;font-size:14px;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:2px}
.backlist:hover{color:var(--accent);border-bottom-color:var(--accent)}

/* ---------- 右栏 ---------- */
.aside{display:flex;flex-direction:column;gap:20px;position:sticky;top:32px}
.panel{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.panel__title{font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--faint);text-transform:uppercase;margin-bottom:14px}
.toc ol{counter-reset:toc;display:flex;flex-direction:column;gap:2px}
.toc a{display:block;padding:7px 10px;border-left:2px solid transparent;font-size:13px;color:var(--muted);line-height:1.5}
.toc a:hover{color:var(--ink);background:var(--paper)}
.toc a.is-cur{color:var(--accent-press);border-left-color:var(--accent);background:var(--accent-soft)}
.panel-list{display:flex;flex-direction:column;gap:2px}
.panel-list a{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 10px;border-radius:var(--radius-sm);font-size:13px;color:var(--ink-2)}
.panel-list a:hover{background:var(--paper);color:var(--accent-press)}
.panel-list a span:last-child{font-family:var(--mono);font-size:11px;color:var(--faint)}
.panel--dark{background:var(--ink);border-color:var(--ink);color:rgba(255,255,255,.72)}
.panel--dark .panel__title{color:rgba(255,255,255,.4)}
.panel--dark .addr{font-family:var(--mono);font-size:12px;color:#fff;word-break:break-all;line-height:1.55}
.panel--dark .row{display:flex;align-items:center;justify-content:space-between;margin-top:12px}

/* ---------- 空态 ---------- */
.empty{
  min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line);border-radius:var(--radius);background:var(--paper-2);padding:48px 24px;text-align:center;
}
.empty svg{width:40px;height:40px;stroke:var(--faint);fill:none;stroke-width:1.4}
.empty p{color:var(--muted);font-size:15px}
.empty a{color:var(--accent-press);border-bottom:1px solid rgba(176,63,24,.4);font-size:14px}
.empty a:hover{color:var(--accent)}

/* ---------- 继续浏览 ---------- */
.more{padding:72px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:32px;font-weight:700;line-height:1.25;color:var(--ink);letter-spacing:-.01em}
.section-head h2 .no{font-family:var(--mono);font-size:14px;font-weight:600;color:var(--accent);display:block;margin-bottom:8px;letter-spacing:.1em}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:2px;white-space:nowrap}
.link-more:hover{color:var(--accent);border-bottom-color:var(--accent)}
.link-more i{transition:transform var(--ease);font-style:normal}
.link-more:hover i{transform:translateX(4px)}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow);transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease);
  display:flex;flex-direction:column;gap:12px;height:100%;
}
.card:hover{box-shadow:var(--shadow-hover);border-color:rgba(224,86,42,.35);transform:translateY(-2px)}
.card h3{font-size:18px;font-weight:700;line-height:1.45;color:var(--ink)}
.card p{font-size:14px;color:var(--muted);line-height:1.7}
.card .foot{margin-top:auto;font-family:var(--mono);font-size:12px;color:var(--faint);display:flex;align-items:center;justify-content:space-between;gap:10px}

/* ---------- 底部 CTA ---------- */
.cta-band{
  margin:72px 0 0;background:var(--ink);border-radius:var(--radius);padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;font-weight:700;color:#fff;line-height:1.35;max-width:22ch}
.cta-band p{margin-top:10px;color:rgba(255,255,255,.6);font-size:14px}
.btn{
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--radius-sm);
  background:var(--ink);color:#fff;font-size:15px;font-weight:600;border:1px solid var(--ink);
  transition:background var(--ease),border-color var(--ease),transform var(--ease),color var(--ease);
}
.btn i{font-style:normal;transition:transform var(--ease)}
.btn:hover{background:var(--accent);border-color:var(--accent)}
.btn:hover i{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn--light{background:#fff;color:var(--ink);border-color:#fff}
.btn--light:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{background:var(--paper-2);border-color:var(--ink);color:var(--ink)}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:rgba(255,255,255,.66);margin-top:96px;padding:64px 0 32px}
.footer__brandrow{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer__brand{display:flex;align-items:center;gap:10px}
.footer__brand .bar{width:3px;height:24px;background:var(--accent);border-radius:2px}
.footer__brand .mark{font-size:20px;font-weight:800;color:#fff;letter-spacing:.04em;display:block;line-height:1.2}
.footer__brand .sub{font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.5)}
.footer__note{font-size:14px;color:rgba(255,255,255,.55)}
.footer__cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px;padding:40px 0}
.footer__col h3{font-size:13px;font-weight:600;letter-spacing:.1em;color:rgba(255,255,255,.42);margin-bottom:16px}
.footer__col li{margin-bottom:10px}
.footer__col a{font-size:14px;color:rgba(255,255,255,.7)}
.footer__col a:hover{color:var(--accent)}
.footer__bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.44)}

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

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{padding:0 28px}
  .article-layout{gap:44px}
}
@media (max-width:1279px){
  .main,.footer{margin-left:var(--side-w)}
  .side{transform:translateX(-168px)}
  .side:hover,.side:focus-within{transform:translateX(0);box-shadow:16px 0 40px -24px rgba(20,24,26,.6)}
  .main,.footer{margin-left:var(--side-fold)}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .aside{position:static;flex-direction:row;flex-wrap:wrap}
  .aside .panel{flex:1 1 260px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .side{transform:translateX(-100%);width:280px}
  .side.is-open{transform:translateX(0);box-shadow:16px 0 40px -24px rgba(20,24,26,.6)}
  .topbar{display:flex}
  .main,.footer{margin-left:0}
  .main{padding-top:56px}
  .crumb{padding-top:28px}
  .cta-band{padding:32px 28px}
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .article-head h1{max-width:none}
  .prose{font-size:16px;line-height:1.8}
  .prose h2{font-size:22px}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head h2{font-size:26px}
  .cta-band{flex-direction:column;align-items:flex-start;gap:20px;margin-top:56px}
  .btn{width:100%;justify-content:center}
  .aside{flex-direction:column}
  .footer{margin-top:72px;padding:48px 0 28px}
  .footer__cols{grid-template-columns:minmax(0,1fr);gap:24px;padding:28px 0}
}
@media (max-width:520px){
  .article-meta{gap:12px}
  .article-layout{padding:32px 0 48px}
  .card{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink:#14181A;
  --ink-2:#2A3134;
  --line:rgba(20,24,26,.10);
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --accent:#E0562A;
  --accent-press:#B03F18;
  --accent-soft:#FBE9E1;
  --jade:#1F5C4E;
  --jade-soft:#E4EEEA;
  --muted:#5F6663;
  --faint:#8B918D;
  --ok:#2E7D5B;
  --warn:#C08A2E;
  --bad:#B4452F;
  --info:#3A6E8F;
  --radius-card:6px;
  --radius-btn:4px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 8px 24px -12px rgba(20,24,26,.18);
  --ease:180ms cubic-bezier(.2,.7,.2,1);
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,monospace;
  --side-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:#1B1D1C;
  font-family:var(--sans);
  font-size:16px;
  line-height:28px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
code{font-family:var(--mono)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:200}
.skip:focus{left:12px;top:12px}

/* ---------- 左侧 App Shell ---------- */
.side{
  position:fixed;left:0;top:0;bottom:0;width:var(--side-w);
  background:var(--ink);color:#D8DAD7;z-index:70;
  display:flex;flex-direction:column;
  transition:width var(--ease);
}
.side__brand{display:flex;align-items:center;gap:10px;height:88px;padding:0 22px;border-bottom:1px solid rgba(255,255,255,.08)}
.bar{display:inline-block;width:3px;height:24px;background:var(--accent);border-radius:2px}
.side__brand .mark{font-weight:800;font-size:20px;letter-spacing:.02em;color:#fff;display:block;line-height:22px}
.side__brand .sub{font-size:12px;letter-spacing:.06em;color:var(--faint);display:block;line-height:16px}
.side__body{padding:18px 14px;overflow-y:auto;flex:1}
.side__group{margin-bottom:26px}
.side__title{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--faint);padding:0 10px 10px}
.side__nav{display:flex;flex-direction:column;gap:2px}
.side__link{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
  border-radius:4px;font-size:14px;color:#C7CBC7;transition:background var(--ease),color var(--ease);
}
.side__link .dot{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.28);flex:0 0 6px}
.side__link:hover{background:rgba(255,255,255,.04);color:#fff}
.side__link.is-active{background:rgba(255,255,255,.06);color:#fff}
.side__link.is-active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;background:var(--accent);border-radius:2px}
.side__link.is-active .dot{background:var(--accent)}
.side__foot{padding:16px 14px 20px;border-top:1px solid rgba(255,255,255,.08)}
.plaque-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.10);border-radius:6px;padding:12px}
.plaque-card__k{font-size:11px;letter-spacing:.08em;color:var(--faint);display:block;margin-bottom:6px}
.plaque-card__v{font-family:var(--mono);font-size:12px;color:#E9EBE7;word-break:break-all;display:block;margin-bottom:10px}
.plaque-card__row{display:flex;align-items:center;justify-content:space-between;gap:8px}
.sdot{width:8px;height:8px;border-radius:50%;background:var(--ok);display:inline-block;box-shadow:0 0 0 3px rgba(46,125,91,.18)}
.plaque-card__state{font-size:12px;color:#C7CBC7;display:flex;align-items:center;gap:6px}
.mini-copy{
  background:transparent;border:1px solid rgba(255,255,255,.22);color:#fff;border-radius:4px;
  font-size:12px;padding:4px 10px;cursor:pointer;transition:border-color var(--ease),background var(--ease)
}
.mini-copy:hover{border-color:var(--accent);background:rgba(224,86,42,.18)}
.mini-copy.is-done{border-color:var(--ok);background:rgba(46,125,91,.22)}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;background:var(--paper-2);
  border-bottom:1px solid var(--line);z-index:90;align-items:center;justify-content:space-between;
  padding:0 16px;
}
.topbar__brand{display:flex;align-items:center;gap:8px}
.topbar__brand .bar{height:20px}
.topbar__brand .mark{font-weight:800;font-size:17px;color:var(--ink)}
.burger{width:44px;height:44px;border:1px solid var(--line);background:var(--paper-2);border-radius:4px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.scrim{position:fixed;inset:0;background:rgba(20,24,26,.45);opacity:0;pointer-events:none;transition:opacity var(--ease);z-index:95}
.scrim.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:88%;max-width:300px;background:var(--ink);z-index:100;
  transform:translateX(-100%);transition:transform 220ms cubic-bezier(.2,.7,.2,1);
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.drawer__head .mark{color:#fff;font-weight:800;font-size:17px}
.drawer__head .sub{display:block;color:var(--faint);font-size:11px;letter-spacing:.06em}
.drawer__close{width:44px;height:44px;border:1px solid rgba(255,255,255,.2);background:transparent;color:#fff;border-radius:4px;font-size:16px;cursor:pointer}
.drawer__body{padding:14px 12px 24px}
.drawer .side__link{height:48px;font-size:15px}
.drawer .plaque-card{margin-top:16px}
.no-scroll{overflow:hidden}

/* ---------- 主内容 ---------- */
.main{margin-left:0}
@media (min-width:1024px){ .main{margin-left:var(--side-w)} }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn .arw{transition:transform var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn--primary{background:var(--ink);color:#fff}
.btn--primary:hover{background:var(--accent)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--ink);background:var(--paper-2)}
.btn--text{height:auto;padding:0;background:none;border:none;color:var(--ink);font-size:15px;font-weight:600;border-bottom:1px solid var(--line);border-radius:0;padding-bottom:2px}
.btn--text:hover{border-color:var(--accent);color:var(--accent-press)}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ---------- 页面 Hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(245,243,238,.96) 0%,rgba(245,243,238,.86) 42%,rgba(245,243,238,.55) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;z-index:0;
}
.page-hero .container{position:relative;z-index:1;padding-top:38px;padding-bottom:48px}
.crumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--faint);font-family:var(--mono);margin-bottom:22px}
.crumb a:hover{color:var(--accent-press)}
.crumb .cur{color:var(--muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--accent-press);background:var(--accent-soft);border-radius:999px;padding:5px 12px;margin-bottom:18px;
}
.page-hero h1{font-size:clamp(28px,3.6vw,44px);line-height:1.16;font-weight:800;letter-spacing:-.02em;max-width:860px}
.page-hero .lede{margin-top:16px;font-size:16px;line-height:28px;color:var(--muted);max-width:620px}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.plaque{
  margin-top:32px;max-width:620px;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);overflow:hidden;
}
.plaque__row{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.plaque__row:last-child{border-bottom:none}
.plaque__key{font-size:11px;letter-spacing:.08em;color:var(--faint);font-family:var(--mono);min-width:56px}
.plaque__val{font-family:var(--mono);font-size:13px;color:var(--ink-2);flex:1;min-width:180px}
.plaque__state{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--jade);background:var(--jade-soft);border-radius:999px;padding:3px 10px}
.plaque .mini-copy{background:var(--paper);border:1px solid var(--line);color:var(--ink)}
.plaque .mini-copy:hover{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-press)}
.plaque .mini-copy.is-done{border-color:var(--ok);background:rgba(46,125,91,.10);color:var(--ok)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-no{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--accent);display:block;margin-bottom:12px}
.sec-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25;font-weight:700}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px;line-height:28px}

/* ---------- 指标条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}
.metric{background:var(--paper-2);padding:22px 20px}
.metric__num{font-family:var(--mono);font-size:30px;font-weight:600;color:var(--ink);line-height:1.1;letter-spacing:-.02em}
.metric__num small{font-size:14px;font-weight:600;color:var(--muted);margin-left:4px}
.metric__label{margin-top:8px;font-size:13px;color:var(--muted)}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.tag{font-size:12px;font-weight:600;letter-spacing:.04em;border-radius:999px;padding:5px 12px;background:var(--paper-2);border:1px solid var(--line);color:var(--muted)}
.tag--accent{background:var(--accent-soft);border-color:transparent;color:var(--accent-press)}
.tag--jade{background:var(--jade-soft);border-color:transparent;color:var(--jade)}

/* ---------- 步骤条 ---------- */
.steps{position:relative;max-width:900px}
.step{
  position:relative;display:grid;grid-template-columns:88px 1fr;gap:24px;
  padding:0 0 40px 0;
}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:43px;top:56px;bottom:0;width:1px;background:var(--line);
}
.step:last-child::before{display:none}
.step__no{
  font-family:var(--mono);font-size:34px;font-weight:600;color:var(--accent);
  line-height:1;letter-spacing:-.03em;padding-top:4px;
}
.step__body{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease)}
.step__body:hover{box-shadow:var(--shadow-2);border-color:rgba(224,86,42,.35);transform:translateY(-2px)}
.step__body h3{font-size:20px;font-weight:700;line-height:30px}
.step__body p{margin-top:10px;color:var(--muted);font-size:15px;line-height:26px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip{font-size:12px;font-weight:600;color:var(--jade);background:var(--jade-soft);border-radius:999px;padding:4px 10px}
.step__meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-family:var(--mono);font-size:12px;color:var(--faint)}
.step__fig{
  grid-column:2;margin-top:18px;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;background:#EFEDE8;
}
.step__fig img{width:100%;aspect-ratio:16/9;object-fit:cover}
.step__fig figcaption{font-size:12px;color:var(--faint);padding:10px 14px;background:var(--paper-2);border-top:1px solid var(--line)}

/* ---------- 定义列表 + 表 ---------- */
.deflist{border-top:1px solid var(--line);max-width:960px}
.defrow{display:grid;grid-template-columns:30% 70%;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}
.defrow dt{font-family:var(--mono);font-size:13px;color:var(--ink);font-weight:600}
.defrow dd{margin:0;color:var(--muted);font-size:15px;line-height:26px}
.tablewrap{margin-top:36px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--paper-2)}
table{width:100%;border-collapse:collapse;min-width:620px}
caption{text-align:left;font-size:13px;color:var(--faint);padding:16px 20px 0}
th,td{padding:14px 20px;text-align:left;font-size:14px;line-height:24px;border-bottom:1px solid var(--line)}
th{font-size:13px;font-weight:600;color:var(--faint);letter-spacing:.04em;background:var(--paper)}
tbody tr:last-child td{border-bottom:none}
td:first-child{font-weight:600;color:var(--ink);width:26%}
.ok-cell{color:var(--ok)}
.risk-cell{color:var(--bad)}

/* ---------- 提示 / 注意卡 ---------- */
.notice{
  position:relative;background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 24px 24px 28px;box-shadow:var(--shadow-1);max-width:960px;
}
.notice::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;background:var(--accent);border-radius:0 2px 2px 0}
.notice h3{font-size:18px;font-weight:700}
.notice ul{margin-top:14px;display:grid;gap:10px}
.notice li{position:relative;padding-left:18px;color:var(--muted);font-size:15px;line-height:26px}
.notice li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--faint)}
.notice--jade::before{background:var(--jade)}
.notice--jade li::before{background:var(--jade)}

/* ---------- 图文区 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.split__fig{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:#EFEDE8;box-shadow:var(--shadow-1)}
.split__fig img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split h3{font-size:22px;font-weight:600;line-height:30px;margin-bottom:12px}
.split p{color:var(--muted);font-size:15px;line-height:28px}
.checklist{margin-top:20px;display:grid;gap:12px}
.checklist li{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:26px;color:var(--ink-2)}
.box{flex:0 0 18px;width:18px;height:18px;border:1px solid var(--line);border-radius:3px;background:var(--paper);margin-top:4px;position:relative}
.box::after{content:"";position:absolute;left:5px;top:2px;width:6px;height:10px;border-right:2px solid var(--jade);border-bottom:2px solid var(--jade);transform:rotate(42deg)}

/* ---------- FAQ ---------- */
.faq{max-width:760px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);transition:color var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent-press)}
.faq summary .caret{flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform var(--ease)}
.faq summary .caret::before,.faq summary .caret::after{content:"";position:absolute;top:9px;width:10px;height:1.5px;background:var(--muted)}
.faq summary .caret::before{left:0;transform:rotate(45deg)}
.faq summary .caret::after{right:0;transform:rotate(-45deg)}
.faq details[open] summary .caret{transform:rotate(180deg)}
.faq .ans{padding:0 0 22px;color:var(--muted);font-size:15px;line-height:26px;max-width:660px}

/* ---------- 相关分类 ---------- */
.rel{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rel__card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;
  display:flex;flex-direction:column;gap:10px;box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),border-color var(--ease),transform var(--ease);
}
.rel__card:hover{box-shadow:var(--shadow-2);border-color:rgba(224,86,42,.35);transform:translateY(-2px)}
.rel__no{font-family:var(--mono);font-size:12px;color:var(--faint)}
.rel__card h3{font-size:17px;font-weight:700;line-height:26px}
.rel__card p{font-size:14px;line-height:24px;color:var(--muted);flex:1}
.rel__more{font-size:13px;font-weight:600;color:var(--accent-press);display:inline-flex;gap:6px;align-items:center}

/* ---------- CTA 通栏 ---------- */
.cta{background:var(--ink);color:#fff}
.cta .container{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-top:44px;padding-bottom:44px;flex-wrap:wrap}
.cta h2{color:#fff;font-size:22px;font-weight:700;line-height:32px}
.cta p{color:#B9BEB9;font-size:14px;margin-top:8px}
.cta .btn--primary{background:#fff;color:var(--ink)}
.cta .btn--primary:hover{background:var(--accent);color:#fff}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#C7CBC7;padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.08)}
.footer__brandrow{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.12);flex-wrap:wrap}
.footer__brand{display:flex;align-items:center;gap:10px}
.footer__brand .mark{font-weight:800;font-size:20px;color:#fff;display:block;line-height:22px}
.footer__brand .sub{font-size:12px;letter-spacing:.06em;color:var(--faint);display:block}
.footer__brand .bar{height:24px}
.footer__note{font-size:14px;color:#9AA09B}
.footer__cols{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:36px 0}
.footer__col h3{font-size:13px;font-weight:600;color:#fff;letter-spacing:.06em;margin-bottom:14px}
.footer__col ul{display:grid;gap:10px}
.footer__col a{font-size:14px;color:#A9AFA9;transition:color var(--ease)}
.footer__col a:hover{color:var(--accent)}
.footer__bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#8B918D;font-family:var(--mono)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms ease,transform 420ms ease}
.reveal.in{opacity:1;transform:none}

/* ---------- 折叠侧栏 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  .side{width:72px;overflow:hidden}
  .main{margin-left:72px}
  .side__brand{padding:0 0 0 24px}
  .side__brand .txt,.side__title,.side__link span:not(.dot),.side__foot{display:none}
  .side__body{padding:14px 12px}
  .side__link{justify-content:center;padding:0}
  .side:hover{width:var(--side-w);box-shadow:0 0 0 1px rgba(255,255,255,.06)}
  .side:hover .side__brand .txt,.side:hover .side__title,.side:hover .side__link span:not(.dot),.side:hover .side__foot{display:block}
  .side:hover .side__brand{padding:0 22px}
  .side:hover .side__link{justify-content:flex-start;padding:0 12px}
}

/* ---------- 断点 ---------- */
@media (max-width:1023px){
  .side{display:none}
  .topbar{display:flex}
  .main{padding-top:56px}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:28px}
  .rel{grid-template-columns:1fr 1fr}
  .footer__cols{grid-template-columns:1fr 1fr;gap:24px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .page-hero .container{padding-top:26px;padding-bottom:34px}
  .page-hero .lede{font-size:15px;line-height:26px}
  .hero__actions .btn{width:100%;justify-content:center}
  .plaque{max-width:100%}
  .plaque__row{align-items:flex-start}
  .plaque__val{min-width:0;width:100%}
  .step{grid-template-columns:1fr;gap:12px}
  .step::before{display:none}
  .step__no{font-size:26px;padding-top:0}
  .step__fig{grid-column:1}
  .defrow{grid-template-columns:1fr;gap:8px;padding:18px 0}
  .metrics{grid-template-columns:1fr 1fr}
  .metric__num{font-size:24px}
  .rel{grid-template-columns:1fr}
  .cta .container{padding-top:32px;padding-bottom:32px}
  .cta .btn{width:100%;justify-content:center}
  .footer__cols{grid-template-columns:1fr}
  .btn{width:100%;justify-content:center}
  .btn--text{width:auto}
  .sec-head{margin-bottom:28px}
}
@media (max-width:520px){
  .metrics{grid-template-columns:1fr}
  .plaque__row{padding:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#14181A;
  --ink-2:#2A3134;
  --line:rgba(20,24,26,.10);
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --accent:#E0562A;
  --accent-press:#B03F18;
  --accent-soft:#FBE9E1;
  --jade:#1F5C4E;
  --jade-soft:#E4EEEA;
  --text:#1B1D1C;
  --muted:#5F6663;
  --faint:#8B918D;
  --ok:#2E7D5B;
  --warn:#C08A2E;
  --err:#B4452F;
  --info:#3A6E8F;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Courier New",monospace;
  --r-card:6px;
  --r-btn:4px;
  --sh:0 1px 2px rgba(20,24,26,.04);
  --sh-hover:0 8px 24px -12px rgba(20,24,26,.18);
  --t:180ms cubic-bezier(.2,.7,.2,1);
  --side:240px;
  --sect:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  letter-spacing:.005em;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
::selection{background:var(--accent-soft);color:var(--accent-press)}

/* ---------- 左侧 App Shell ---------- */
.side{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side);
  background:var(--ink);
  color:#C6CBC7;
  display:flex;
  flex-direction:column;
  z-index:40;
  transition:width var(--t);
}
.side__brand{
  height:88px;
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 20px;
  border-bottom:1px solid rgba(255,255,255,.08);
  flex:none;
}
.brand__bar{display:block;width:3px;height:24px;background:var(--accent);flex:none}
.brand__mark{display:block;font-family:var(--mono);font-weight:800;font-size:20px;line-height:1.1;color:#fff;letter-spacing:.02em}
.brand__sub{display:block;font-size:12px;line-height:1.3;letter-spacing:.06em;color:#98A09B;margin-top:3px}
.side__nav{padding:18px 12px 8px;display:flex;flex-direction:column;gap:4px;flex:none}
.side__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 12px;
  border-radius:4px;
  font-size:14px;
  color:#C6CBC7;
  transition:background var(--t),color var(--t);
}
.side__link .dot{width:5px;height:5px;border-radius:50%;background:currentColor;opacity:.45;flex:none;transition:opacity var(--t)}
.side__link:hover{background:rgba(255,255,255,.04);color:#fff}
.side__link:hover .dot{opacity:.8}
.side__link.is-active{background:rgba(255,255,255,.06);color:#fff}
.side__link.is-active .dot{opacity:1;background:var(--accent)}
.side__link.is-active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:2px;
  background:var(--accent);
}
.side__plaque{
  margin:auto 16px 20px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);
  padding:14px;
  background:rgba(255,255,255,.03);
  flex:none;
}
.plaque__top{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.06em;color:#98A09B}
.status-dot{width:7px;height:7px;border-radius:50%;background:#5CBF92;box-shadow:0 0 0 3px rgba(92,191,146,.16);flex:none}
.side__plaque code{display:block;font-family:var(--mono);font-size:12px;color:#E9E7E2;margin:10px 0 12px;word-break:break-all}
.plaque__btn{
  width:100%;
  height:34px;
  border:1px solid rgba(255,255,255,.18);
  background:transparent;
  color:#E9E7E2;
  border-radius:var(--r-btn);
  font-size:13px;
  cursor:pointer;
  transition:background var(--t),border-color var(--t),color var(--t);
}
.plaque__btn:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.plaque__btn.is-done{background:var(--jade);border-color:var(--jade);color:#fff}
.side-mask{
  position:fixed;inset:0;background:rgba(20,24,26,.45);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:35;
}
body.nav-open .side-mask{opacity:1;visibility:visible}

/* ---------- 顶栏（移动端） ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:30;
  height:56px;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
}
.topbar__brand{display:flex;align-items:center;gap:10px}
.topbar__brand .brand__mark{color:var(--ink);font-size:17px}
.topbar__brand .brand__sub{color:var(--faint);font-size:11px;margin-top:1px;letter-spacing:.05em}
.burger{
  width:44px;height:44px;border:0;background:transparent;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border-radius:var(--r-btn);
}
.burger span{display:block;width:20px;height:2px;background:var(--ink);transition:transform var(--t),opacity var(--t)}
body.nav-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .burger span:nth-child(2){opacity:0}
body.nav-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 主区域 ---------- */
.main{
  margin-left:var(--side);
  min-height:100vh;
  display:flex;
  flex-direction:column;
  transition:margin-left var(--t);
}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 40px}

/* ---------- 面包屑 ---------- */
.crumb{padding:28px 0 0}
.crumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;color:var(--faint);letter-spacing:.02em}
.crumb__list a{color:var(--muted);border-bottom:1px solid transparent;transition:color var(--t),border-color var(--t)}
.crumb__list a:hover{color:var(--accent);border-color:var(--accent)}
.crumb__sep{color:var(--faint);opacity:.7}
.crumb__now{color:var(--ink)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  margin-top:20px;
  padding:56px 0 52px;
  background-image:linear-gradient(180deg,rgba(245,243,238,.93) 0%,rgba(245,243,238,.74) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.hero__tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent-press);
  font-size:12px;font-weight:600;letter-spacing:.08em;
}
.hero__title{
  margin-top:20px;
  font-size:clamp(30px,3.6vw,46px);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.02em;
  color:var(--ink);
  max-width:20em;
}
.hero__title em{font-style:normal;font-family:var(--mono);font-size:.86em;color:var(--accent);letter-spacing:-.01em}
.hero__lead{margin-top:18px;max-width:44em;font-size:16px;line-height:1.85;color:var(--muted)}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero__meta{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:22px;
  border-top:1px solid var(--line);
}
.hero__meta div{font-family:var(--mono);font-size:12px;color:var(--faint);letter-spacing:.04em}
.hero__meta strong{display:block;font-family:var(--sans);font-size:15px;color:var(--ink);font-weight:600;margin-top:4px;letter-spacing:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  height:48px;padding:0 26px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn__arrow{transition:transform var(--t)}
.btn--primary{background:var(--ink);color:#fff}
.btn--primary:hover{background:var(--accent);box-shadow:var(--sh-hover)}
.btn--primary:hover .btn__arrow{transform:translateX(4px)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);background:var(--paper-2)}
.btn--link{
  display:inline-flex;align-items:center;gap:8px;
  padding:0;height:auto;background:none;border:0;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--ink);
  transition:color var(--t),border-color var(--t);
}
.btn--link:hover{color:var(--accent);border-color:var(--accent)}
.btn--link:hover .btn__arrow{transform:translateX(4px)}
.btn--onDark{background:transparent;border-color:rgba(255,255,255,.32);color:#fff}
.btn--onDark:hover{background:var(--accent);border-color:var(--accent)}

/* ---------- 板块 ---------- */
.section{padding:var(--sect) 0;border-top:1px solid var(--line)}
.section--first{border-top:0}
.section__head{margin-bottom:44px;max-width:52em}
.h2{
  display:flex;align-items:baseline;gap:14px;
  font-size:clamp(24px,2.5vw,32px);
  font-weight:700;line-height:1.25;letter-spacing:-.015em;color:var(--ink);
}
.h2__num{font-family:var(--mono);font-size:14px;font-weight:600;color:var(--accent);letter-spacing:.06em}
.h2__lead{margin-top:14px;font-size:15px;line-height:1.85;color:var(--muted)}
.h3{font-size:19px;font-weight:600;line-height:1.5;color:var(--ink)}

/* ---------- 定义列表（字段逐项） ---------- */
.deflist{border-top:1px solid var(--line)}
.deflist__row{
  display:grid;
  grid-template-columns:30% 1fr;
  gap:32px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
  transition:background var(--t);
}
.deflist__row:hover{background:rgba(255,255,255,.6)}
.deflist__key{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--ink);letter-spacing:.04em;line-height:1.7}
.deflist__key em{display:block;font-style:normal;font-family:var(--sans);font-size:12px;font-weight:500;color:var(--faint);letter-spacing:.06em;margin-top:6px}
.deflist__val{font-size:15px;line-height:1.85;color:var(--muted)}
.deflist__val strong{color:var(--ink);font-weight:600}

/* ---------- 表格对照 ---------- */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--paper-2);
  overflow-x:auto;
  box-shadow:var(--sh);
}
table{width:100%;min-width:660px}
th,td{
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  font-size:14.5px;
  vertical-align:top;
  line-height:1.7;
}
th{
  font-size:13px;font-weight:600;color:var(--muted);
  letter-spacing:.06em;background:#FAF8F4;white-space:nowrap;
}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:#FCFBF8}
td:first-child{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--ink);white-space:nowrap}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.tag--ok{background:var(--jade-soft);color:var(--jade)}
.tag--risk{background:rgba(180,69,47,.08);color:var(--err)}
.tag--info{background:rgba(58,110,143,.08);color:var(--info)}
.tag--warn{background:rgba(192,138,46,.10);color:#8C6318}

/* ---------- 流程 ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border-top:1px solid var(--line);
}
.flow__item{position:relative;padding:26px 26px 26px 0}
.flow__item::after{
  content:"";position:absolute;top:36px;right:0;width:calc(100% - 60px);height:1px;background:var(--line);
}
.flow__item:last-child::after{display:none}
.flow__num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  border:1px solid var(--accent);color:var(--accent);
  font-family:var(--mono);font-size:12px;font-weight:600;
  background:var(--paper);position:relative;z-index:1;
}
.flow__title{margin-top:16px;font-size:17px;font-weight:700;color:var(--ink)}
.flow__text{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--muted);max-width:24em}

/* ---------- 图文区块 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-top:48px}
.split__figure{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#EFEDE8}
.split__figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.split__body p{font-size:15px;line-height:1.9;color:var(--muted)}
.split__body p + p{margin-top:14px}

/* ---------- 核对清单 ---------- */
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.check{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 20px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.check:hover{border-color:rgba(224,86,42,.35);box-shadow:var(--sh-hover);transform:translateY(-2px)}
.check__box{
  width:18px;height:18px;flex:none;margin-top:3px;
  border:1.5px solid var(--faint);border-radius:3px;background:#fff;
}
.check__text{font-size:14.5px;line-height:1.7;color:var(--ink)}
.check__text span{display:block;font-size:12px;font-family:var(--mono);color:var(--faint);margin-top:4px;letter-spacing:.04em}

/* ---------- 问答 ---------- */
.qa{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.qa__item{background:var(--paper-2);padding:24px;transition:background var(--t)}
.qa__item:hover{background:#FCFAF6}
.qa__q{font-size:16px;font-weight:600;line-height:1.6;color:var(--ink);display:flex;gap:10px}
.qa__q i{font-style:normal;font-family:var(--mono);font-size:12px;color:var(--accent);padding-top:4px}
.qa__a{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--muted);padding-left:24px}

/* ---------- 分类卡 ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  display:flex;flex-direction:column;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh);
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.card:hover{border-color:rgba(224,86,42,.35);box-shadow:var(--sh-hover);transform:translateY(-2px)}
.card__media{background:#EFEDE8;aspect-ratio:16/9;overflow:hidden}
.card__media img{width:100%;height:100%;object-fit:cover}
.card__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.card__badge{align-self:flex-start;padding:3px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent-press);font-size:12px;font-weight:600;letter-spacing:.06em}
.card__title{margin-top:14px;font-size:18px;font-weight:700;line-height:1.5;color:var(--ink)}
.card__text{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--muted)}
.card__foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;color:var(--faint);letter-spacing:.04em}
.card:hover .card__foot{color:var(--accent)}
.card:hover .card__foot .btn__arrow{transform:translateX(4px)}

/* ---------- CTA 带 ---------- */
.cta{
  background:var(--ink);
  color:#fff;
  padding:56px 0;
}
.cta__inner{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.cta__title{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.4;letter-spacing:-.01em}
.cta__sub{margin-top:8px;font-size:14px;color:#9AA09C;max-width:38em;line-height:1.8}

/* ---------- 页脚 ---------- */
.footer{background:var(--ink);color:#9AA09C;padding:64px 0 28px;margin-top:auto}
.footer__brandrow{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-start;justify-content:space-between;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer__brand{display:flex;align-items:center;gap:12px}
.footer__brand .bar{display:block;width:3px;height:24px;background:var(--accent);flex:none}
.footer__brand .mark{display:block;font-family:var(--mono);font-weight:800;font-size:19px;color:#fff;line-height:1.15}
.footer__brand .sub{display:block;font-size:12px;letter-spacing:.06em;color:#8B918D;margin-top:3px}
.footer__note{font-size:14px;color:#8B918D;max-width:30em;line-height:1.8}
.footer__cols{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;padding:40px 0}
.footer__col h3{font-size:13px;font-weight:600;color:#fff;letter-spacing:.08em;margin-bottom:16px}
.footer__col li + li{margin-top:10px}
.footer__col a{font-size:14px;color:#9AA09C;transition:color var(--t)}
.footer__col a:hover{color:var(--accent)}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-family:var(--mono);font-size:12px;color:#7C837F;letter-spacing:.03em;
}

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

/* ---------- 断点 ---------- */
@media (max-width:1439px){
  .container{padding:0 32px}
  :root{--sect:88px}
}
@media (max-width:1279px){
  :root{--side:72px;--sect:72px}
  .side{overflow:hidden}
  .side:hover{width:240px;box-shadow:var(--sh-hover)}
  .side__brand{justify-content:center;padding:0 12px}
  .side__brand .brand__text{display:none}
  .side__link{justify-content:center;padding:0}
  .side__link > span:not(.dot){display:none}
  .side__link.is-active::before{left:-12px}
  .side__plaque{display:none}
  .side:hover .side__brand{justify-content:flex-start;padding:0 20px}
  .side:hover .side__brand .brand__text{display:block}
  .side:hover .side__link{justify-content:flex-start;padding:0 12px}
  .side:hover .side__link > span:not(.dot){display:inline}
  .cards{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1023px){
  :root{--side:0px;--sect:64px}
  .side{width:280px;transform:translateX(-100%);transition:transform var(--t),width var(--t)}
  .side__brand{justify-content:flex-start;padding:0 20px}
  .side__brand .brand__text{display:block}
  .side__link{justify-content:flex-start;padding:0 14px;height:48px}
  .side__link > span:not(.dot){display:inline}
  .side__plaque{display:block;margin:auto 16px 24px}
  body.nav-open .side{transform:translateX(0)}
  .main{margin-left:0}
  .topbar{display:flex}
  .split{grid-template-columns:1fr;gap:28px}
  .flow{grid-template-columns:1fr;border-top:0}
  .flow__item{padding:20px 0 20px 0;border-top:1px solid var(--line)}
  .flow__item::after{display:none}
  .footer__cols{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  :root{--sect:56px}
  .container{padding:0 20px}
  .hero{padding:40px 0 36px;margin-top:14px}
  .hero__actions .btn{width:100%;justify-content:center}
  .hero__meta{gap:18px}
  .deflist__row{grid-template-columns:1fr;gap:10px;padding:20px 0}
  .checklist,.qa,.cards{grid-template-columns:1fr}
  .cta__inner{flex-direction:column;align-items:flex-start}
  .cta__inner .btn{width:100%;justify-content:center}
  .footer__cols{padding:32px 0}
  .footer__bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .hero__title{font-size:28px}
  .footer__cols{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#14181A;
  --ink-2:#2A3134;
  --line:rgba(20,24,26,.10);
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --accent:#E0562A;
  --accent-press:#B03F18;
  --accent-soft:#FBE9E1;
  --jade:#1F5C4E;
  --jade-soft:#E4EEEA;
  --text:#1B1D1C;
  --muted:#5F6663;
  --faint:#8B918D;
  --ok:#2E7D5B;
  --warn:#C08A2E;
  --err:#B4452F;
  --info:#3A6E8F;
  --ok-soft:rgba(46,125,91,.08);
  --warn-soft:rgba(192,138,46,.10);
  --err-soft:rgba(180,69,47,.08);
  --info-soft:rgba(58,110,143,.08);
  --r-card:6px;
  --r-btn:4px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 8px 24px -12px rgba(20,24,26,.18);
  --ease:cubic-bezier(.2,.7,.2,1);
  --side:240px;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-card)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- 布局骨架 ---------- */
.page{
  margin-left:var(--side);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 左侧栏 ---------- */
.side{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--side);
  background:var(--ink);
  display:flex;
  flex-direction:column;
  padding:0 0 24px;
  overflow-y:auto;
  overflow-x:hidden;
  z-index:40;
  transition:width 180ms var(--ease);
}
.side__brand{
  display:flex;
  align-items:center;
  gap:12px;
  height:88px;
  padding:0 22px;
  flex:0 0 auto;
}
.bar{
  display:block;
  width:3px;
  height:24px;
  background:var(--accent);
  border-radius:2px;
  flex:0 0 auto;
}
.side__brandText{display:flex;flex-direction:column;line-height:1.2}
.side__brandText .mark{font-weight:800;font-size:20px;color:#fff;letter-spacing:.02em}
.side__brandText .sub{font-size:10px;letter-spacing:.06em;color:rgba(255,255,255,.55);white-space:nowrap}
.side__nav{display:flex;flex-direction:column;gap:4px;padding:8px 14px;flex:0 0 auto}
.side__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  height:44px;
  padding:0 12px;
  border-radius:var(--r-btn);
  color:rgba(255,255,255,.72);
  font-size:14px;
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.side__link .dot{
  width:6px;height:6px;border-radius:50%;
  background:rgba(255,255,255,.32);
  flex:0 0 auto;
  transition:background 180ms var(--ease);
}
.side__link:hover{background:rgba(255,255,255,.04);color:#fff}
.side__link.is-active{background:rgba(255,255,255,.06);color:#fff}
.side__link.is-active .dot{background:var(--accent)}
.side__link.is-active::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;
  width:3px;
  background:var(--accent);
  border-radius:2px;
}
.side__group{padding:20px 26px 0;flex:0 0 auto}
.side__groupTitle{
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:rgba(255,255,255,.42);
  margin-bottom:8px;
}
.side__mini{
  display:block;
  font-size:13px;
  color:rgba(255,255,255,.66);
  padding:7px 0;
  border-bottom:1px solid rgba(255,255,255,.07);
  transition:color 180ms var(--ease);
}
.side__mini:last-child{border-bottom:0}
.side__mini:hover{color:var(--accent)}
.side__plate{
  margin:auto 16px 0;
  padding:14px;
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);
  background:rgba(255,255,255,.03);
  flex:0 0 auto;
}
.plateLabel{
  font-size:11px;letter-spacing:.08em;color:rgba(255,255,255,.42);
  margin-bottom:6px;
}
.plateAddr{
  font-family:var(--mono);
  font-size:12px;
  color:#fff;
  letter-spacing:.02em;
  word-break:break-all;
  margin-bottom:10px;
}
.plateRow{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.statusDot{
  width:8px;height:8px;border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 0 3px rgba(46,125,91,.22);
  flex:0 0 auto;
}
.plateStatus{font-size:12px;color:rgba(255,255,255,.7)}
.copyBtn{
  margin-left:auto;
  font-size:12px;
  padding:4px 10px;
  border:1px solid rgba(255,255,255,.22);
  border-radius:var(--r-btn);
  color:rgba(255,255,255,.82);
  transition:all 180ms var(--ease);
}
.copyBtn:hover{border-color:var(--accent);color:var(--accent)}
.copyBtn.is-done{border-color:var(--ok);color:#7FD3AC}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:50;
  align-items:center;
  justify-content:space-between;
  height:56px;
  padding:0 16px;
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
}
.topbar__brand{display:flex;align-items:center;gap:9px}
.topbar__brand .mark{font-weight:800;font-size:17px;color:var(--ink)}
.topbar__brand .sub{font-size:10px;letter-spacing:.06em;color:var(--faint)}
.burger{
  width:44px;height:44px;
  display:flex;flex-direction:column;
  align-items:center;justify-content:center;
  gap:5px;
}
.burger span{display:block;width:20px;height:1.5px;background:var(--ink);border-radius:2px}
.mask{
  position:fixed;inset:0;
  background:rgba(20,24,26,.45);
  z-index:39;
}
.mask[hidden]{display:none}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  color:var(--faint);
  font-family:var(--mono);
  letter-spacing:.02em;
  flex-wrap:wrap;
}
.crumb a{color:var(--faint);transition:color 180ms var(--ease)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:rgba(20,24,26,.28)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:40px 0 72px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(245,243,238,.95) 0%,rgba(245,243,238,.82) 55%,rgba(245,243,238,.96) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center right;
  background-repeat:no-repeat;
}
.hero__inner{
  display:grid;
  grid-template-columns:minmax(0,1.45fr) minmax(0,.85fr);
  gap:56px;
  align-items:start;
  margin-top:28px;
}
.hero__badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:var(--accent-soft);
  color:var(--accent-press);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
}
.hero__title{
  margin:20px 0 18px;
  font-size:clamp(30px,3.6vw,46px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.02em;
  color:var(--ink);
  max-width:16em;
}
.hero__lead{
  font-size:17px;
  line-height:1.85;
  color:var(--muted);
  max-width:36em;
}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* 入口铭牌（Hero 侧） */
.plateCard{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  padding:24px;
}
.plateCard__head{
  display:flex;align-items:center;justify-content:space-between;
  gap:10px;margin-bottom:16px;
}
.plateCard__head h2{font-size:14px;font-weight:700;letter-spacing:.02em;color:var(--ink)}
.plateCard__code{
  font-family:var(--mono);
  font-size:12px;
  color:var(--faint);
  letter-spacing:.04em;
}
.plateList{display:flex;flex-direction:column}
.plateList li{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;
  border-top:1px solid var(--line);
  font-size:14px;
  color:var(--muted);
}
.plateList li:first-child{border-top:0}
.plateList .k{display:flex;align-items:center;gap:9px}
.plateList .v{font-family:var(--mono);font-size:13px;color:var(--ink);letter-spacing:.02em}
.dotOk,.dotWarn,.dotInfo{
  width:8px;height:8px;border-radius:50%;flex:0 0 auto;
}
.dotOk{background:var(--ok);box-shadow:0 0 0 3px var(--ok-soft)}
.dotWarn{background:var(--warn);box-shadow:0 0 0 3px var(--warn-soft)}
.dotInfo{background:var(--info);box-shadow:0 0 0 3px var(--info-soft)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--plain{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:40px;
}
.h2{
  display:flex;
  align-items:baseline;
  gap:14px;
  font-size:clamp(24px,2.4vw,32px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
  color:var(--ink);
}
.h2 .no{
  font-family:var(--mono);
  font-size:14px;
  color:var(--accent);
  letter-spacing:.06em;
  font-weight:600;
}
.section__desc{
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:52em;
  margin-top:14px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);
}
.btn .arw{transition:transform 180ms var(--ease);font-family:var(--mono)}
.btn--primary{background:var(--ink);color:#fff}
.btn--primary:hover{background:var(--accent)}
.btn--primary:hover .arw{transform:translateX(4px)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);background:var(--paper-2)}
.btn--accent{background:var(--accent);color:#fff}
.btn--accent:hover{background:var(--accent-press)}
.btn--accent:hover .arw{transform:translateX(4px)}
.btn--ghostLight{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn--ghostLight:hover{border-color:#fff;background:rgba(255,255,255,.06)}
.btn--text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
  border-radius:0;height:auto;padding:0 0 3px;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.btn--text:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.06em;
  white-space:nowrap;
}
.badge--ok{background:var(--ok-soft);color:var(--ok)}
.badge--warn{background:var(--warn-soft);color:#8E6519}
.badge--err{background:var(--err-soft);color:var(--err)}
.badge--info{background:var(--info-soft);color:var(--info)}
.badge--accent{background:var(--accent-soft);color:var(--accent-press)}

/* ---------- 三步排查路径 ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--paper-2);
  overflow:hidden;
}
.flow__item{
  position:relative;
  padding:30px 28px 32px;
  border-right:1px solid var(--line);
}
.flow__item:last-child{border-right:0}
.flow__item::after{
  content:"";
  position:absolute;
  top:44px;right:-5px;
  width:8px;height:8px;
  border-top:1px solid rgba(20,24,26,.22);
  border-right:1px solid rgba(20,24,26,.22);
  transform:rotate(45deg);
  background:var(--paper-2);
  z-index:2;
}
.flow__item:last-child::after{display:none}
.flow__no{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--accent);
  font-weight:600;
}
.flow__title{
  font-size:18px;
  font-weight:700;
  color:var(--ink);
  margin:12px 0 10px;
}
.flow__text{
  font-size:14px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- 图文板块 ---------- */
.split{
  display:grid;
  grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);
  gap:48px;
  align-items:center;
}
.split__media{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  background:#EFEDE8;
  box-shadow:var(--shadow-1);
}
.split__media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0}
.checklist{display:flex;flex-direction:column;gap:0}
.checklist li{
  display:flex;
  gap:14px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
}
.checklist li:last-child{border-bottom:0}
.checkmark{
  flex:0 0 auto;
  width:20px;height:20px;
  margin-top:4px;
  border:1px solid rgba(20,24,26,.32);
  border-radius:3px;
  position:relative;
}
.checkmark::after{
  content:"";
  position:absolute;
  left:6px;top:2px;
  width:5px;height:10px;
  border-right:1.5px solid var(--accent);
  border-bottom:1.5px solid var(--accent);
  transform:rotate(40deg);
}
.checklist h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px}
.checklist p{font-size:14px;line-height:1.8;color:var(--muted)}

/* ---------- FAQ ---------- */
.faqWrap{max-width:860px;margin:0 auto}
.faqMeta{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  padding:14px 18px;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--paper-2);
  margin-bottom:28px;
}
.faqMeta__label{font-size:13px;color:var(--muted)}
.faq{border-top:1px solid var(--line)}
.qa{border-bottom:1px solid var(--line)}
.qa__head{
  display:flex;
  align-items:center;
  gap:14px;
  padding:22px 4px;
  cursor:pointer;
  list-style:none;
  transition:background 180ms var(--ease);
  border-radius:var(--r-btn);
}
.qa__head::-webkit-details-marker{display:none}
.qa__head:hover{background:rgba(20,24,26,.02)}
.qa__head:hover .qa__q{color:var(--accent)}
.qa__idx{
  font-family:var(--mono);
  font-size:12px;
  color:var(--faint);
  letter-spacing:.06em;
  flex:0 0 auto;
}
.qa__q{
  flex:1 1 auto;
  font-size:17px;
  font-weight:600;
  line-height:1.6;
  color:var(--ink);
  transition:color 180ms var(--ease);
}
.qa__arw{
  flex:0 0 auto;
  width:10px;height:10px;
  border-right:1.5px solid var(--faint);
  border-bottom:1.5px solid var(--faint);
  transform:rotate(45deg);
  transition:transform 200ms var(--ease);
  margin-left:6px;
}
.qa[open] .qa__arw{transform:rotate(-135deg)}
.qa__body{
  padding:0 4px 26px 40px;
  font-size:15px;
  line-height:1.95;
  color:var(--muted);
  max-width:62em;
}
.qa__body p+p{margin-top:12px}
.qa__body strong{color:var(--ink);font-weight:600}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;
  gap:16px;
  align-items:flex-start;
  padding:24px 26px;
  border-radius:var(--r-card);
  background:var(--jade-soft);
  border-left:3px solid var(--jade);
}
.notice__icon{
  flex:0 0 auto;
  width:30px;height:30px;
  border-radius:50%;
  border:1px solid rgba(31,92,78,.32);
  color:var(--jade);
  font-family:var(--mono);
  font-size:14px;
  display:flex;align-items:center;justify-content:center;
  margin-top:2px;
}
.notice h3{font-size:16px;font-weight:700;color:var(--jade);margin-bottom:6px}
.notice p{font-size:14px;line-height:1.85;color:#2C4A42}

/* ---------- 相关分类 ---------- */
.relGrid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.relCard{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:24px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.relCard:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:rgba(224,86,42,.35);
}
.relCard__no{
  font-family:var(--mono);
  font-size:12px;
  color:var(--faint);
  letter-spacing:.08em;
}
.relCard h3{font-size:17px;font-weight:700;color:var(--ink);line-height:1.5}
.relCard p{font-size:14px;line-height:1.8;color:var(--muted);flex:1 1 auto}
.relCard .go{
  font-size:13px;
  font-weight:600;
  color:var(--accent-press);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.relCard:hover .go .arw{transform:translateX(4px)}
.relCard .go .arw{font-family:var(--mono);transition:transform 180ms var(--ease)}

/* ---------- 底部 CTA ---------- */
.ctaBand{
  background:var(--ink);
  color:#fff;
  padding:56px 0;
}
.ctaBand__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.ctaBand__title{font-size:clamp(20px,2vw,26px);font-weight:700;letter-spacing:-.01em}
.ctaBand__desc{font-size:14px;color:rgba(255,255,255,.66);margin-top:8px;line-height:1.8}
.ctaBand__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.footer{
  background:var(--ink);
  color:rgba(255,255,255,.7);
  padding:64px 0 28px;
  border-top:1px solid rgba(255,255,255,.08);
}
.footer__brandrow{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  padding-bottom:28px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer__brand{display:flex;align-items:center;gap:12px}
.footer__brand .mark{font-weight:800;font-size:20px;color:#fff;letter-spacing:.02em}
.footer__brand .sub{font-size:11px;letter-spacing:.06em;color:rgba(255,255,255,.5);margin-left:8px}
.footer__note{font-size:13px;color:rgba(255,255,255,.55)}
.footer__cols{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
  padding:36px 0;
}
.footer__col h3{
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  color:rgba(255,255,255,.44);
  margin-bottom:14px;
}
.footer__col li{margin-bottom:10px}
.footer__col a{
  font-size:14px;
  color:rgba(255,255,255,.74);
  transition:color 180ms var(--ease);
}
.footer__col a:hover{color:var(--accent)}
.footer__bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:12px;
  color:rgba(255,255,255,.46);
  font-family:var(--mono);
  letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1279px) and (min-width:1024px){
  :root{--side:72px}
  .side{overflow:hidden}
  .side:hover{width:240px;overflow-y:auto;box-shadow:var(--shadow-2)}
  .side__brand{padding:0;justify-content:center}
  .side:hover .side__brand{padding:0 22px;justify-content:flex-start}
  .side__brandText,
  .side__link>span:not(.dot),
  .side__group,
  .plateBody{display:none}
  .side:hover .side__brandText,
  .side:hover .side__link>span:not(.dot),
  .side:hover .side__group,
  .side:hover .plateBody{display:block}
  .side__link{justify-content:center;padding:0}
  .side:hover .side__link{justify-content:flex-start;padding:0 12px}
  .side__plate{margin:auto 12px 0;text-align:center}
  .side:hover .side__plate{text-align:left}
  .plateRow{justify-content:center}
  .side:hover .plateRow{justify-content:flex-start}
}
@media (max-width:1023px){
  .side{
    width:280px;
    transform:translateX(-100%);
    transition:transform 220ms var(--ease);
    box-shadow:none;
  }
  .side.is-open{transform:none;box-shadow:var(--shadow-2)}
  .page{margin-left:0}
  .topbar{display:flex}
  .container{padding:0 20px}
  .hero{padding:28px 0 56px}
  .hero__inner{grid-template-columns:1fr;gap:32px}
  .section{padding:64px 0}
  .section--tight{padding:48px 0}
  .flow{grid-template-columns:1fr}
  .flow__item{border-right:0;border-bottom:1px solid var(--line);padding:24px 22px}
  .flow__item:last-child{border-bottom:0}
  .flow__item::after{display:none}
  .split{grid-template-columns:1fr;gap:32px}
  .relGrid{grid-template-columns:1fr 1fr}
  .footer__cols{grid-template-columns:1fr 1fr;gap:24px}
  .qa__body{padding-left:4px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .hero__title{max-width:none}
  .hero__actions .btn{width:100%}
  .relGrid{grid-template-columns:1fr}
  .ctaBand__actions{width:100%}
  .ctaBand__actions .btn{width:100%}
  .qa__head{flex-wrap:wrap;padding:18px 2px}
  .qa__q{font-size:16px;flex-basis:100%;order:2}
  .qa__idx{order:1}
  .qa__head .badge{order:3}
  .qa__arw{order:4;margin-left:auto}
  .faqMeta{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .footer__cols{grid-template-columns:1fr}
  .section{padding:52px 0}
  .plateCard{padding:20px}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#14181A;
  --ink-2:#2A3134;
  --line:rgba(20,24,26,.10);
  --paper:#F5F3EE;
  --paper-2:#FFFFFF;
  --accent:#E0562A;
  --accent-press:#B03F18;
  --accent-soft:#FBE9E1;
  --jade:#1F5C4E;
  --jade-soft:#E4EEEA;
  --text:#1B1D1C;
  --muted:#5F6663;
  --faint:#8B918D;
  --ok:#2E7D5B;
  --ok-soft:rgba(46,125,91,.08);
  --warn:#C08A2E;
  --warn-soft:rgba(192,138,46,.10);
  --err:#B4452F;
  --err-soft:rgba(180,69,47,.08);
  --info:#3A6E8F;
  --info-soft:rgba(58,110,143,.08);
  --radius-card:6px;
  --radius-btn:4px;
  --shadow:0 1px 2px rgba(20,24,26,.04);
  --shadow-hover:0 8px 24px -12px rgba(20,24,26,.18);
  --ease:180ms cubic-bezier(.2,.7,.2,1);
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --side-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.24;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
::selection{background:var(--accent-soft);color:var(--accent-press)}

/* ---------- 布局骨架 ---------- */
.side{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--side-w);
  background:var(--ink);
  color:#E9E7E2;
  display:flex;
  flex-direction:column;
  z-index:60;
  overflow-y:auto;
}
.page{
  margin-left:var(--side-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 40px;
}
.topbar{display:none}

/* ---------- 品牌字标 ---------- */
.brand{display:flex;align-items:center;gap:10px}
.brand .bar{width:3px;height:24px;background:var(--accent);border-radius:2px;flex:none}
.brand .mark{font-size:20px;font-weight:800;letter-spacing:.02em;display:block;line-height:1.1}
.brand .sub{font-size:12px;letter-spacing:.06em;color:var(--faint);display:block;line-height:1.4;white-space:nowrap}
.side .brand .mark{color:#fff}
.side .brand .sub{color:rgba(255,255,255,.45)}

.side__brand{
  padding:24px 20px 18px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.side__close{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  color:rgba(255,255,255,.7);
  font-size:22px;line-height:1;
  border-radius:4px;
}
.side__close:hover{background:rgba(255,255,255,.06);color:#fff}

.side__nav{padding:18px 12px 8px;display:flex;flex-direction:column;gap:2px}
.side__link{
  position:relative;
  display:flex;align-items:center;gap:10px;
  min-height:44px;
  padding:0 12px;
  border-radius:4px;
  color:rgba(255,255,255,.72);
  font-size:14px;
  transition:background var(--ease),color var(--ease);
}
.side__link .dot{
  width:6px;height:6px;border-radius:50%;
  background:rgba(255,255,255,.28);
  flex:none;
  transition:background var(--ease);
}
.side__link:hover{background:rgba(255,255,255,.04);color:#fff}
.side__link.is-active{background:rgba(255,255,255,.06);color:#fff}
.side__link.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;
  background:var(--accent);border-radius:0 2px 2px 0;
}
.side__link.is-active .dot{background:var(--accent)}

.side__group{padding:20px 12px 0}
.side__group h3{
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:rgba(255,255,255,.38);
  text-transform:uppercase;
  padding:0 12px 8px;
}
.side__group a{
  display:block;
  min-height:40px;
  line-height:40px;
  padding:0 12px;
  border-radius:4px;
  font-size:13px;
  color:rgba(255,255,255,.62);
  transition:color var(--ease),background var(--ease);
}
.side__group a:hover{color:#fff;background:rgba(255,255,255,.04)}

.plate{
  margin:auto 12px 16px;
  padding:14px;
  border:1px solid rgba(255,255,255,.12);
  border-radius:6px;
  background:rgba(255,255,255,.03);
}
.plate__row{display:flex;align-items:center;gap:8px;font-size:12px;color:rgba(255,255,255,.6)}
.plate__row .val{margin-left:auto;font-family:var(--mono);color:#fff}
.status-dot{width:8px;height:8px;border-radius:50%;flex:none;display:inline-block}
.status-dot.ok{background:#4FA37C;box-shadow:0 0 0 3px rgba(79,163,124,.16)}
.plate__code{
  font-family:var(--mono);
  font-size:11.5px;
  color:rgba(255,255,255,.5);
  margin:10px 0 12px;
  word-break:break-all;
}
.plate__copy{
  width:100%;
  min-height:36px;
  border:1px solid rgba(255,255,255,.18);
  border-radius:4px;
  font-size:12.5px;
  color:rgba(255,255,255,.8);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.plate__copy:hover{border-color:var(--accent);color:#fff;background:rgba(224,86,42,.12)}

.scrim{
  position:fixed;inset:0;background:rgba(20,24,26,.45);
  opacity:0;pointer-events:none;transition:opacity var(--ease);z-index:55;
}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 28px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  background:var(--ink);color:#fff;
  box-shadow:var(--shadow);
  transition:background var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn .arw{transition:transform var(--ease);display:inline-block}
.btn:hover{background:var(--accent);box-shadow:var(--shadow-hover)}
.btn:hover .arw{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn--ghost{
  background:transparent;color:var(--ink);
  border:1px solid var(--line);box-shadow:none;
}
.btn--ghost:hover{background:var(--paper-2);border-color:var(--ink);color:var(--ink)}
.btn--light{background:#fff;color:var(--ink)}
.btn--light:hover{background:var(--accent);color:#fff}
.linkbtn{
  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(--ease),border-color var(--ease);
}
.linkbtn:hover{color:var(--accent);border-bottom-color:var(--accent)}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--accent-soft);color:var(--accent-press);
}
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;flex:none;
}
.badge--ok{background:var(--ok-soft);color:var(--ok)}
.badge--warn{background:var(--warn-soft);color:var(--warn)}
.badge--err{background:var(--err-soft);color:var(--err)}
.badge--info{background:var(--info-soft);color:var(--info)}
.num{font-family:var(--mono);color:var(--accent);font-size:13px;letter-spacing:.06em}

.section{padding:96px 0}
.section--tight{padding:72px 0}
.section__head{max-width:760px;margin-bottom:40px}
.section__head h2{font-size:32px;margin-top:10px;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.section__head p{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.8}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-family:var(--mono);font-size:12px;color:var(--faint);
  letter-spacing:.02em;
}
.crumb a{color:var(--faint);transition:color var(--ease)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:rgba(20,24,26,.22)}
.crumb .cur{color:var(--ink-2)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background-color:var(--paper);
  background-image:linear-gradient(180deg,rgba(245,243,238,.94),rgba(245,243,238,.99)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  padding:36px 0 80px;
}
.hero__grid{
  display:grid;
  grid-template-columns:1.35fr .9fr;
  gap:56px;
  align-items:start;
  margin-top:36px;
}
.hero h1{
  font-size:clamp(32px,3.6vw,50px);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.02em;
  max-width:14em;
}
.hero h1 .hl{
  font-family:"Noto Serif SC",var(--sans);
  color:var(--jade);
}
.hero__lead{
  margin-top:22px;
  font-size:16px;
  color:var(--muted);
  max-width:34em;
  line-height:1.85;
}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
.hero__meta{
  margin-top:28px;display:flex;gap:22px;flex-wrap:wrap;
  font-family:var(--mono);font-size:12px;color:var(--faint);
}
.hero__meta strong{color:var(--ink-2);font-weight:600}

.plate-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  padding:22px;
}
.plate-card__title{
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--faint);text-transform:uppercase;
}
.plate-card__addr{
  font-family:var(--mono);
  font-size:13px;
  color:var(--ink);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:4px;
  padding:12px 14px;
  margin:12px 0 16px;
  word-break:break-all;
}
.plate-card__rows{display:flex;flex-direction:column;gap:10px}
.plate-card__row{
  display:flex;align-items:center;gap:10px;
  font-size:13.5px;color:var(--muted);
  padding-bottom:10px;border-bottom:1px solid var(--line);
}
.plate-card__row:last-child{border-bottom:0;padding-bottom:0}
.plate-card__row .val{margin-left:auto;font-family:var(--mono);font-size:12.5px;color:var(--ink-2)}
.copy-btn{
  width:100%;margin-top:18px;min-height:44px;
  border:1px solid var(--line);border-radius:4px;
  font-size:13.5px;font-weight:600;color:var(--ink);
  transition:border-color var(--ease),background var(--ease),color var(--ease);
}
.copy-btn:hover{border-color:var(--ink);background:var(--paper)}
.copy-btn.is-done{border-color:var(--ok);color:var(--ok);background:var(--ok-soft)}

/* ---------- 场景卡 ---------- */
.cards2{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.scene{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.scene:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(224,86,42,.35)}
.scene__media{
  position:relative;
  aspect-ratio:16/9;
  background:#EFEDE8;
  overflow:hidden;
}
.scene__media img{width:100%;height:100%;object-fit:cover}
.scene__media .ph{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:24px;color:var(--faint);
  letter-spacing:.14em;
}
.scene__body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1}
.scene__body h3{font-size:19px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.scene__body p{font-size:14.5px;color:var(--muted);line-height:1.8}
.scene__list{display:flex;flex-direction:column;gap:9px;margin-top:2px}
.scene__list li{
  position:relative;padding-left:16px;
  font-size:14px;color:var(--ink-2);line-height:1.7;
}
.scene__list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:50%;
  background:var(--jade-soft);
  border:1px solid var(--jade);
}
.scene__foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-family:var(--mono);font-size:11.5px;color:var(--faint);letter-spacing:.03em;
}

/* ---------- 对照表 ---------- */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--paper-2);
  box-shadow:var(--shadow);
  overflow-x:auto;
}
.matrix{min-width:720px}
.matrix th,.matrix td{
  text-align:left;
  padding:16px 20px;
  border-bottom:1px solid var(--line);
  font-size:14px;
  color:var(--ink-2);
  vertical-align:top;
  line-height:1.7;
}
.matrix thead th{
  font-size:13px;font-weight:600;color:var(--faint);
  letter-spacing:.04em;
  background:var(--paper);
  position:sticky;top:0;
}
.matrix tbody tr:last-child td{border-bottom:0}
.matrix tbody tr:hover td{background:rgba(224,86,42,.03)}
.matrix td:first-child,.matrix th:first-child{
  position:sticky;left:0;
  background:var(--paper-2);
  font-weight:600;color:var(--ink);
  border-right:1px solid var(--line);
  min-width:150px;
  z-index:1;
}
.matrix thead th:first-child{background:var(--paper)}

/* ---------- 步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  border-top:1px solid var(--line);
}
.step{
  position:relative;
  padding:28px 24px 28px 0;
}
.step::after{
  content:"";position:absolute;right:24px;top:38px;left:56px;
  height:1px;background:var(--line);
}
.step:last-child::after{display:none}
.step__num{
  font-family:var(--mono);font-size:13px;color:var(--accent);
  letter-spacing:.08em;display:block;
}
.step h3{font-size:17px;margin:12px 0 10px;padding-right:8px}
.step p{font-size:14px;color:var(--muted);line-height:1.8;padding-right:20px}

/* ---------- 提示条 ---------- */
.tipbar{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--jade-soft);
  border-left:3px solid var(--jade);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  padding:20px 24px;
}
.tipbar__ico{
  width:28px;height:28px;flex:none;border-radius:50%;
  border:1px solid var(--jade);color:var(--jade);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:13px;
}
.tipbar p{font-size:14.5px;color:#1D3A33;line-height:1.8}
.tipbar strong{color:var(--jade)}

/* ---------- 自检清单 ---------- */
.checklist{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 40px;
  border-top:1px solid var(--line);
}
.check{
  display:flex;align-items:flex-start;gap:14px;
  padding:20px 0;
  border-bottom:1px solid var(--line);
}
.check__box{
  width:18px;height:18px;flex:none;margin-top:5px;
  border:1px solid var(--ink-2);border-radius:3px;
  position:relative;
}
.check__box::after{
  content:"";position:absolute;left:5px;top:1px;
  width:5px;height:10px;
  border-right:2px solid var(--accent);
  border-bottom:2px solid var(--accent);
  transform:rotate(42deg);
}
.check__txt{font-size:14.5px;color:var(--ink-2);line-height:1.7}
.check__txt small{
  display:block;font-family:var(--mono);font-size:11.5px;
  color:var(--faint);margin-top:4px;letter-spacing:.03em;
}

/* ---------- FAQ ---------- */
.faq{max-width:760px;border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__q{
  width:100%;
  display:flex;align-items:center;gap:12px;
  padding:22px 0;
  text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);
  transition:color var(--ease);
}
.faq__q:hover{color:var(--accent)}
.faq__q .txt{flex:1}
.faq__ico{
  width:20px;height:20px;flex:none;position:relative;
  transition:transform var(--ease);
}
.faq__ico::before,.faq__ico::after{
  content:"";position:absolute;background:var(--faint);
  transition:background var(--ease);
}
.faq__ico::before{left:0;right:0;top:9px;height:1.5px}
.faq__ico::after{top:0;bottom:0;left:9px;width:1.5px}
.faq__q:hover .faq__ico::before,.faq__q:hover .faq__ico::after{background:var(--accent)}
.faq__item.is-open .faq__ico{transform:rotate(180deg)}
.faq__item.is-open .faq__ico::after{opacity:0}
.faq__a{
  max-height:0;overflow:hidden;
  transition:max-height var(--ease);
}
.faq__a p{
  padding:0 0 24px;
  font-size:15px;color:var(--muted);line-height:1.85;
  max-width:44em;
}
.faq__foot{margin-top:28px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}

/* ---------- 相关分类 ---------- */
.relcards{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.rel{
  display:flex;flex-direction:column;gap:12px;
  padding:24px;
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rel:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(224,86,42,.35)}
.rel h3{font-size:17px}
.rel p{font-size:14px;color:var(--muted);line-height:1.75}
.rel span.mono{font-family:var(--mono);font-size:11.5px;color:var(--faint);margin-top:auto}

/* ---------- CTA 通栏 ---------- */
.ctabar{
  background:var(--ink);
  color:#fff;
  padding:56px 0;
}
.ctabar__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.ctabar h2{font-size:26px;letter-spacing:-.01em}
.ctabar p{color:rgba(255,255,255,.6);font-size:14.5px;margin-top:10px}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:auto;
  background:var(--ink);
  color:rgba(255,255,255,.66);
  padding:64px 0 28px;
}
.footer__brandrow{
  display:flex;align-items:flex-start;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer__brand{display:flex;align-items:center;gap:10px}
.footer__brand .bar{width:3px;height:24px;background:var(--accent);border-radius:2px;flex:none}
.footer__brand .mark{font-size:20px;font-weight:800;color:#fff;display:block;line-height:1.1}
.footer__brand .sub{font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.45);display:block}
.footer__note{font-size:13.5px;color:rgba(255,255,255,.55);max-width:32em;line-height:1.8}
.footer__cols{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:32px;padding:36px 0;
}
.footer__col h3{
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:rgba(255,255,255,.4);margin-bottom:14px;
}
.footer__col li{margin-bottom:10px}
.footer__col a{
  font-size:14px;color:rgba(255,255,255,.68);
  transition:color var(--ease);
}
.footer__col a:hover{color:var(--accent)}
.footer__bottom{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-family:var(--mono);font-size:12px;color:rgba(255,255,255,.42);
  letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms ease,transform 520ms ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{padding:0 32px}
}
@media (max-width:1279px){
  :root{--side-w:72px}
  .side__brand{padding:20px 0 16px;justify-content:center}
  .side .brand{gap:0}
  .side .brand__txt{display:none}
  .side__nav{padding:14px 12px 8px;align-items:center}
  .side__link{justify-content:center;padding:0;width:48px}
  .side__link span:not(.dot){display:none}
  .side__link .dot{width:8px;height:8px}
  .side__group{display:none}
  .plate{margin:auto 8px 16px;padding:10px 6px;text-align:center}
  .plate__row{justify-content:center}
  .plate__row span:not(.val):not(.status-dot){display:none}
  .plate__row .val{margin-left:0;font-size:11px}
  .plate__code{font-size:10px}
  .plate__copy{font-size:11px;padding:0 4px}
  .hero__grid{grid-template-columns:1.2fr .95fr;gap:36px}
  .cards2{gap:20px}
}
@media (max-width:1023px){
  :root{--side-w:0px}
  .side{
    width:280px;
    transform:translateX(-100%);
    transition:transform var(--ease);
    box-shadow:0 0 40px rgba(0,0,0,.3);
  }
  .side.is-open{transform:none}
  .side__brand{justify-content:space-between;padding:20px}
  .side .brand__txt{display:block}
  .side__nav{align-items:stretch;padding:16px 12px 8px}
  .side__link{justify-content:flex-start;padding:0 12px;width:auto;min-height:48px}
  .side__link span:not(.dot){display:inline}
  .side__group{display:block}
  .plate{margin:auto 12px 20px;padding:14px;text-align:left}
  .plate__row{justify-content:flex-start}
  .plate__row span:not(.val):not(.status-dot){display:inline}
  .plate__row .val{margin-left:auto;font-size:12.5px}
  .plate__code{font-size:11.5px}
  .plate__copy{font-size:12.5px;padding:0 12px}
  .side__close{display:flex}
  .page{margin-left:0}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:sticky;top:0;z-index:50;
    height:56px;padding:0 20px;
    background:#fff;border-bottom:1px solid var(--line);
  }
  .topbar .brand .mark{color:var(--ink);font-size:18px}
  .topbar .brand .sub{display:none}
  .burger{
    width:44px;height:44px;display:flex;flex-direction:column;
    align-items:center;justify-content:center;gap:5px;
    border-radius:4px;
  }
  .burger span{display:block;width:20px;height:1.5px;background:var(--ink);transition:background var(--ease)}
  .burger:hover span{background:var(--accent)}
  .scrim.is-open{opacity:1;pointer-events:auto}
  .hero{padding:28px 0 56px}
  .hero__grid{grid-template-columns:1fr;gap:32px}
  .section{padding:72px 0}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step:nth-child(2)::after{display:none}
  .step{padding:24px 20px 24px 0}
  .relcards{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .section__head h2{font-size:26px}
  .cards2{grid-template-columns:1fr}
  .checklist{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .step{padding:20px 0;border-bottom:1px solid var(--line)}
  .step::after{display:none}
  .step:last-child{border-bottom:0}
  .step p{padding-right:0}
  .relcards{grid-template-columns:1fr}
  .btn{width:100%}
  .hero__actions .btn{width:100%}
  .ctabar__inner{flex-direction:column;align-items:flex-start}
  .ctabar h2{font-size:22px}
  .faq__q{font-size:15.5px;padding:18px 0}
  .footer__cols{grid-template-columns:1fr;gap:24px}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .matrix th,.matrix td{padding:14px 16px;font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
}