/* roulang page: index */
:root{
  --ink:#0B3A31;
  --ink-deep:#072A24;
  --lime:#C6F04E;
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --sand:#E7E2D8;
  --text:#17211F;
  --muted:#5C6B66;
  --line:#DCD7CC;
  --ok:#2E7D5B;
  --warn:#C4661F;
  --err:#B4402F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:16px;
  --sh-hover:0 12px 32px rgba(11,58,49,.10);
  --sh-modal:0 24px 64px rgba(7,42,36,.18);
  --ease:cubic-bezier(.22,.8,.24,1);
  --max:1240px;
  --nav-h:78px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  padding-bottom:76px;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
h1,h2,h3,h4{line-height:1.28}
::selection{background:var(--lime);color:var(--ink-deep)}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
.grid-container{max-width:var(--max);padding-left:24px;padding-right:24px;margin:0 auto}
.section{padding:104px 0}
.section-tight{padding:72px 0}
.section-dark{background:var(--ink-deep);color:#fff}
.sec-head{max-width:760px;margin-bottom:56px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--ink);text-transform:none;
  background:rgba(11,58,49,.07);border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:14px;height:2px;background:var(--lime);border-radius:2px}
.sec-title{font-size:clamp(26px,3.4vw,40px);font-weight:700;letter-spacing:-.01em}
.sec-desc{margin-top:16px;font-size:17px;color:var(--muted);line-height:1.85}
.section-dark .sec-desc{color:rgba(255,255,255,.72)}
.section-dark .eyebrow{background:rgba(198,240,78,.14);color:var(--lime)}

/* ---------- 按钮 ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-btn);
  border:1px solid transparent;cursor:pointer;
  font-size:16px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  overflow:hidden;white-space:nowrap;
}
.btn i{transition:transform .2s var(--ease)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary::after{
  content:"";position:absolute;inset:0;background:var(--lime);
  transform:translateX(-101%);transition:transform .28s var(--ease);z-index:0;
}
.btn-primary span,.btn-primary i{position:relative;z-index:1}
.btn-primary:hover{color:var(--ink-deep)}
.btn-primary:hover::after{transform:translateX(0)}
.btn-accent{background:var(--lime);color:var(--ink-deep);font-weight:700}
.btn-accent:hover{background:#d5f76f;transform:translateY(-2px);box-shadow:0 10px 26px rgba(198,240,78,.32)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn-sm{min-height:42px;padding:0 20px;font-size:15px}
.btn-block{width:100%}
.btn:hover i.fa-arrow-right{transform:translateX(4px)}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:1px solid rgba(11,58,49,.28);padding-bottom:3px;
}
.link-arrow i{transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--ink-deep);border-color:var(--lime)}
.link-arrow:hover i{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,239,.86);
  border-bottom:1px solid transparent;
  transition:height .26s var(--ease),background .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,244,239,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:var(--nav-h);transition:height .26s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.logo-mark{
  position:relative;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(150deg,var(--ink) 0%,var(--ink-deep) 100%);
  flex:0 0 auto;overflow:hidden;
}
.logo-mark::before{
  content:"";position:absolute;left:6px;top:8px;width:22px;height:18px;
  border:2px solid var(--lime);border-radius:50% 50% 6px 6px/70% 70% 10px 10px;
  border-bottom-color:transparent;
}
.logo-mark::after{
  content:"";position:absolute;left:4px;bottom:7px;width:26px;height:2px;
  background:var(--lime);border-radius:2px;box-shadow:0 -5px 0 -0.5px rgba(198,240,78,.55);
}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text b{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--ink)}
.logo-text small{font-size:11px;letter-spacing:.22em;color:var(--muted);font-weight:600}
.nav-links{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link{
  position:relative;font-size:16px;font-weight:600;color:var(--text);
  padding:6px 0;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-icon-btn{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--ink);
  cursor:pointer;align-items:center;justify-content:center;font-size:17px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-icon-btn:hover{border-color:var(--ink);color:var(--ink-deep)}

/* ---------- Hero ---------- */
.hero{
  position:relative;display:flex;align-items:center;overflow:hidden;
  min-height:640px;color:#fff;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,42,36,.93) 0%,rgba(11,58,49,.84) 44%,rgba(11,58,49,.44) 100%);
}
.hero-inner{position:relative;z-index:2;padding:110px 0 90px;width:100%}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;
  background:rgba(198,240,78,.16);color:var(--lime);border-radius:999px;padding:7px 16px;margin-bottom:26px;
}
.hero-badge i{font-size:12px}
.hero h1{
  font-size:clamp(32px,5.1vw,60px);font-weight:800;line-height:1.14;
  letter-spacing:-.02em;max-width:840px;
}
.hero-sub{
  margin-top:24px;max-width:620px;font-size:clamp(16px,1.5vw,19px);
  line-height:1.85;color:rgba(255,255,255,.82);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.trust-bar{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px 34px;
  padding:22px 0 30px;border-top:1px solid rgba(255,255,255,.16);
}
.trust-item{display:inline-flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.78)}
.trust-item i{color:var(--lime);font-size:13px}

/* ---------- 痛点 ---------- */
.pain-list{display:grid;gap:0;border-top:1px solid var(--line)}
.pain-item{
  display:grid;grid-template-columns:170px 1fr;gap:32px;align-items:center;
  padding:34px 0;border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),padding-left .24s var(--ease);
}
.pain-item:hover{background:rgba(255,255,255,.72);padding-left:14px}
.pain-index{
  font-size:clamp(52px,7vw,88px);font-weight:800;line-height:.9;
  color:transparent;-webkit-text-stroke:1.5px rgba(11,58,49,.28);letter-spacing:-.04em;
  font-variant-numeric:tabular-nums;
}
.pain-q{font-size:clamp(19px,2vw,24px);font-weight:700;color:var(--ink);letter-spacing:-.01em}
.pain-q em{font-style:normal;color:var(--warn);font-size:1.35em;line-height:0;position:relative;top:2px}
.pain-a{margin-top:8px;font-size:16px;color:var(--muted);max-height:0;opacity:0;overflow:hidden;transition:max-height .3s var(--ease),opacity .3s var(--ease)}
.pain-item:hover .pain-a,.pain-item:focus-within .pain-a{max-height:70px;opacity:1}

/* ---------- Bento 方案 ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bento-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(198,240,78,.85)}
.bento-card .num{font-size:14px;font-weight:700;color:var(--muted);letter-spacing:.14em;font-variant-numeric:tabular-nums}
.bento-card h3{font-size:22px;font-weight:700;margin-top:14px;letter-spacing:-.01em}
.bento-card p{margin-top:12px;font-size:15.5px;color:var(--muted)}
.bento-media{margin-top:24px;border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:var(--sand)}
.bento-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.bento-card:hover .bento-media img{transform:scale(1.03)}
.bento-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:flex-end}
.bento-main{grid-column:span 7;grid-row:span 2}
.bento-side{grid-column:span 5}
.bento-wide{grid-column:span 12;flex-direction:row;align-items:center;gap:36px}
.bento-wide .bento-body{flex:1 1 auto}
.bento-wide .bento-media{margin-top:0;flex:0 0 380px;aspect-ratio:16/10}
.bento-wide .bento-foot{border-top:none;padding-top:16px;justify-content:flex-start}

/* ---------- 数据 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{padding-top:22px;border-top:1px solid rgba(198,240,78,.45)}
.stat-num{
  font-size:clamp(44px,5.6vw,80px);font-weight:800;line-height:1;color:var(--lime);
  letter-spacing:-.03em;font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:4px;
}
.stat-num span{font-size:.38em;font-weight:700;color:#fff}
.stat-label{margin-top:16px;font-size:17px;font-weight:600;color:#fff}
.stat-note{margin-top:8px;font-size:13px;color:rgba(255,255,255,.6);line-height:1.7}
.stat-cta{margin-top:56px;display:flex;flex-wrap:wrap;align-items:center;gap:18px}
.stat-cta p{font-size:15px;color:rgba(255,255,255,.72)}

/* ---------- 资讯 ---------- */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px}
.news-list{display:grid;gap:20px}
.news-feature{
  display:grid;grid-template-columns:340px 1fr;gap:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-feature:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(198,240,78,.85)}
.news-feature-media{overflow:hidden;background:var(--sand)}
.news-feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.news-feature:hover .news-feature-media img{transform:scale(1.03)}
.news-feature-body{padding:34px;display:flex;flex-direction:column;gap:14px}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(11,58,49,.09);color:var(--ink);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-lime{background:rgba(198,240,78,.32);color:var(--ink-deep)}
.news-time{font-size:13.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-title{font-size:21px;font-weight:700;line-height:1.45;letter-spacing:-.01em}
.news-title a:hover{color:var(--ink)}
.news-summary{font-size:15px;color:var(--muted);line-height:1.8}
.news-feature .link-arrow{align-self:flex-start;margin-top:auto}
.news-rows{border-top:1px solid var(--line);margin-top:8px}
.news-row{
  display:grid;grid-template-columns:130px 96px 1fr 40px;gap:20px;align-items:center;
  padding:22px 12px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),padding-left .22s var(--ease);
}
.news-row:hover{background:#fff;padding-left:20px}
.news-row .news-time{font-size:13.5px}
.news-row .row-title{font-size:16.5px;font-weight:600;line-height:1.5}
.news-row .row-summary{font-size:14px;color:var(--muted);margin-top:4px;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.news-row .row-arrow{text-align:right;color:var(--muted);transition:color .2s var(--ease),transform .2s var(--ease)}
.news-row:hover .row-arrow{color:var(--ink);transform:translateX(4px)}
.empty-state{
  text-align:center;padding:64px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-state i{font-size:32px;color:var(--muted);margin-bottom:16px;display:block}
.empty-state p{color:var(--muted);margin-bottom:20px}

/* ---------- 隐私说明 ---------- */
.privacy-note{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:36px;
}
.privacy-note h3{font-size:17px;font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.privacy-note h3 i{color:var(--ink);font-size:15px}
.privacy-note p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 4px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:18px;font-weight:600;color:var(--text);transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--ink)}
.faq-sign{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;color:var(--ink);
  transition:background .2s var(--ease),transform .24s var(--ease),border-color .2s var(--ease);
}
.faq-item.is-open .faq-sign{background:var(--lime);border-color:var(--lime);transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 4px 28px;font-size:16px;color:var(--muted);line-height:1.85;max-width:860px}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--ink) 0%,var(--ink-deep) 100%);
  color:#fff;border-radius:24px;padding:56px;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:clamp(24px,3vw,34px);font-weight:700;letter-spacing:-.01em}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.74);font-size:16px;max-width:560px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.72);padding:76px 0 0;margin-top:104px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-text b{color:#fff}
.footer-brand .logo-text small{color:rgba(198,240,78,.85)}
.footer-brand p{margin-top:20px;font-size:14.5px;line-height:1.85;max-width:330px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-col li{margin-bottom:12px;font-size:14.5px}
.footer-col a{color:rgba(255,255,255,.72)}
.footer-col a:hover{color:var(--lime)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.footer-contact i{color:var(--lime);margin-top:6px;font-size:13px}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.14);
  padding:24px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.55);
}

/* ---------- 底部 Tab ---------- */
.tab-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:flex;background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  flex:1 1 0;min-height:64px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  font-size:11px;font-weight:600;color:var(--muted);position:relative;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.tab-item i{font-size:20px;transition:transform .22s var(--ease)}
.tab-item::before{
  content:"";position:absolute;top:0;left:22%;right:22%;height:2px;border-radius:0 0 3px 3px;
  background:var(--lime);transform:scaleX(0);transition:transform .24s var(--ease);
}
.tab-item.is-active{color:var(--ink)}
.tab-item.is-active::before{transform:scaleX(1)}
.tab-item.is-active i{transform:scale(1.08)}

/* ---------- 模态 ---------- */
.modal-mask{
  position:fixed;inset:0;z-index:120;display:none;
  background:rgba(7,42,36,.55);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  align-items:center;justify-content:center;padding:24px;overflow-y:auto;
}
.modal-mask.is-open{display:flex}
.modal-card{
  position:relative;width:100%;max-width:540px;background:#fff;border-radius:20px;
  box-shadow:var(--sh-modal);padding:38px 36px 32px;animation:modalIn .3s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.modal-close{
  position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;font-size:15px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.modal-close:hover{border-color:var(--ink);color:var(--ink)}
.modal-card h3{font-size:22px;font-weight:700;letter-spacing:-.01em}
.modal-card .modal-sub{margin-top:10px;font-size:14.5px;color:var(--muted)}
.form-grid{display:grid;gap:18px;margin-top:26px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink)}
.field input,.field select{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;font-size:15.5px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 2px rgba(198,240,78,.6)
}
.field.has-error input,.field.has-error select{border-color:var(--err)}
.field-error{display:none;margin-top:6px;font-size:13px;color:var(--err)}
.field.has-error .field-error{display:block}
.check-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);line-height:1.7}
.check-row input{width:18px;height:18px;margin-top:3px;flex:0 0 auto;accent-color:var(--ink)}
.form-tip{margin-top:14px;font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  body{padding-bottom:72px}
  .nav-links{display:none}
  .nav-icon-btn{display:inline-flex}
  .nav-actions .btn{display:none}
  .nav-inner{height:60px}
  .logo-text b{font-size:16.5px}
  .hero{min-height:auto}
  .hero-inner{padding:76px 0 56px}
  .bento-main,.bento-side,.bento-wide{grid-column:span 12;grid-row:auto}
  .bento-wide{flex-direction:column;align-items:stretch;gap:24px}
  .bento-wide .bento-media{flex:none}
  .stats{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .news-feature{grid-template-columns:1fr}
  .news-feature-media{aspect-ratio:16/9}
  .news-row{grid-template-columns:1fr 28px;gap:12px}
  .news-row .row-time{grid-column:1/2}
  .news-row .badge-row{grid-column:1/2}
  .news-row .row-arrow{grid-row:1/3}
  .privacy-note{grid-template-columns:1fr;gap:28px;padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{padding:38px 28px;border-radius:20px}
  .section{padding:72px 0}
}
@media (min-width:1024px){
  .tab-bar{display:none}
  body{padding-bottom:0}
}
@media (max-width:639px){
  .grid-container{padding-left:20px;padding-right:20px}
  .pain-item{grid-template-columns:1fr;gap:12px;padding:26px 0}
  .pain-index{font-size:52px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column}
  .modal-mask{padding:0;align-items:flex-end}
  .modal-card{max-width:100%;border-radius:20px 20px 0 0;padding:32px 22px 26px;animation:drawerIn .3s var(--ease)}
  @keyframes drawerIn{from{transform:translateY(100%)}to{transform:none}}
  .hero h1{font-size:32px}
  .hero-actions .btn{width:100%}
  .section{padding:60px 0}
}

/* roulang page: article */
:root{
  --green-900:#072A24;
  --green-800:#0B3A31;
  --green-700:#155A4A;
  --accent:#C6F04E;
  --accent-dark:#A9D62F;
  --accent-soft:rgba(198,240,78,.16);
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --sand:#E7E2D8;
  --ink:#17211F;
  --muted:#5C6B66;
  --line:#DCD7CC;
  --success:#2E7D5B;
  --warn:#C4661F;
  --error:#B4402F;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:16px;
  --shadow-hover:0 12px 32px rgba(11,58,49,.10);
  --shadow-modal:0 24px 64px rgba(7,42,36,.18);
  --ease:cubic-bezier(.22,.8,.24,1);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.grid-container{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%;}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}

/* ---------- buttons ---------- */
.btn{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.btn i{font-size:13px;transition:transform .2s var(--ease);}
.btn:hover i{transform:translateX(4px);}
.btn:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--green-800);color:#fff;}
.btn-primary::before{
  content:"";position:absolute;inset:0;background:var(--accent);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .28s var(--ease);z-index:0;
}
.btn-primary span,.btn-primary i{position:relative;z-index:1;}
.btn-primary:hover{color:var(--green-900);box-shadow:var(--shadow-hover);}
.btn-primary:hover::before{transform:scaleX(1);}
.btn-accent{background:var(--accent);color:var(--green-900);}
.btn-accent:hover{background:var(--accent-dark);box-shadow:0 10px 26px rgba(11,58,49,.16);}
.btn-ghost{background:transparent;color:var(--green-800);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--accent);background:rgba(255,255,255,.7);}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--green-800);
  border-bottom:1px solid var(--line);padding-bottom:4px;
}
.btn-link:hover{border-color:var(--accent);}
.btn-link i{transition:transform .2s var(--ease);}
.btn-link:hover i{transform:translateX(4px);}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.7;
  background:rgba(11,58,49,.08);color:var(--green-800);
}
.badge-accent{background:var(--accent-soft);color:#3F5B10;}
.badge-solid{background:var(--accent);color:var(--green-900);}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:var(--nav-h);
  background:rgba(246,244,239,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:height .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(246,244,239,.95);
  border-bottom-color:var(--line);
  box-shadow:0 6px 22px rgba(11,58,49,.06);
}
.nav-inner{
  height:100%;display:flex;align-items:center;gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0;}
.logo-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(140deg,var(--green-800),var(--green-900));
  position:relative;flex-shrink:0;
}
.logo-mark::before{
  content:"";position:absolute;left:6px;right:6px;top:50%;height:2px;
  background:var(--accent);border-radius:2px;transform:translateY(-6px);
}
.logo-mark::after{
  content:"";position:absolute;left:6px;right:12px;top:50%;height:2px;
  background:rgba(255,255,255,.55);border-radius:2px;transform:translateY(4px);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:16px;font-weight:800;letter-spacing:.01em;color:var(--green-900);white-space:nowrap;}
.logo-text small{font-size:9.5px;letter-spacing:.22em;color:var(--muted);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:500;color:var(--muted);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--green-800);background:rgba(11,58,49,.05);}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--green-900);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-icon-btn{
  width:42px;height:42px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;color:var(--green-800);
  display:none;align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-icon-btn:hover{border-color:var(--accent);color:var(--green-900);}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  margin-top:var(--nav-h);
  padding:72px 0 64px;
  background-color:var(--green-900);
  background-image:linear-gradient(115deg,rgba(7,42,36,.94) 0%,rgba(7,42,36,.78) 48%,rgba(7,42,36,.58) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:#fff;
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;right:-120px;bottom:-140px;width:420px;height:420px;
  border:1px solid rgba(198,240,78,.22);border-radius:50%;
}
.article-hero .grid-container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:rgba(255,255,255,.68);margin-bottom:20px;}
.breadcrumb a{color:rgba(255,255,255,.68);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(255,255,255,.35);}
.breadcrumb .current{color:rgba(255,255,255,.92);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{
  font-size:44px;font-weight:800;line-height:1.16;letter-spacing:-.02em;
  max-width:22ch;margin-bottom:20px;
}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;font-size:13.5px;color:rgba(255,255,255,.72);}
.hero-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
.hero-meta .meta-item i{color:var(--accent);font-size:12px;}
.hero-meta .badge{background:rgba(198,240,78,.16);color:var(--accent);}

/* ---------- article layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 316px;
  gap:40px;
  align-items:start;
  padding:64px 0 24px;
}
.article-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:48px 56px;
}
.article-body{font-size:17.5px;line-height:1.9;color:var(--ink);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 22px;}
.article-body h2{
  font-size:30px;font-weight:700;line-height:1.3;letter-spacing:-.015em;
  margin:46px 0 18px;padding-top:6px;position:relative;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:-10px;width:44px;height:3px;border-radius:3px;background:var(--accent);
}
.article-body h3{font-size:22px;font-weight:600;line-height:1.4;margin:34px 0 14px;scroll-margin-top:96px;}
.article-body h4{font-size:18px;font-weight:600;margin:26px 0 12px;}
.article-body a{color:var(--green-700);border-bottom:1px solid var(--accent);}
.article-body a:hover{color:var(--green-900);}
.article-body ul,.article-body ol{margin:0 0 24px;padding-left:2px;}
.article-body ul li,.article-body ol li{position:relative;padding-left:24px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:14px;width:7px;height:7px;border-radius:2px;
  background:var(--accent);transform:rotate(45deg);
}
.article-body ol{counter-reset:item;}
.article-body ol li{counter-increment:item;padding-left:32px;}
.article-body ol li::before{
  content:counter(item);position:absolute;left:0;top:3px;
  width:22px;height:22px;border-radius:6px;background:rgba(11,58,49,.08);
  color:var(--green-800);font-size:12px;font-weight:700;line-height:22px;text-align:center;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  border-left:3px solid var(--accent);
  background:var(--accent-soft);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:#2C3A33;font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:26px 0;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15.5px;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.article-body thead th{background:var(--bg);font-weight:600;color:var(--green-900);}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:rgba(231,226,216,.34);}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}
.article-body code{
  background:rgba(11,58,49,.07);padding:2px 7px;border-radius:6px;font-size:15px;
}
.empty-article{padding:24px 0 12px;text-align:center;}
.empty-article h2{font-size:26px;margin-bottom:12px;}
.empty-article p{color:var(--muted);margin-bottom:22px;}

/* ---------- article footer blocks ---------- */
.article-foot{margin-top:32px;display:grid;gap:28px;}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tag-row .tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:13px;color:var(--muted);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tag-row .tag:hover{border-color:var(--accent);color:var(--green-800);}
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.post-nav a{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 22px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.post-nav a:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(198,240,78,.6);}
.post-nav span{display:block;font-size:12.5px;color:var(--muted);margin-bottom:8px;}
.post-nav b{font-size:16px;font-weight:600;line-height:1.5;color:var(--green-900);}
.post-nav .next{text-align:right;}

/* ---------- sidebar ---------- */
.article-side{display:grid;gap:20px;position:sticky;top:100px;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 24px 22px;
}
.side-card h3{font-size:15px;font-weight:700;color:var(--green-900);margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--accent-dark);font-size:13px;}
.toc-list{display:grid;gap:8px;counter-reset:toc;}
.toc-list li a{
  display:block;font-size:14px;color:var(--muted);line-height:1.6;
  padding-left:14px;position:relative;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.toc-list li a::before{
  content:"";position:absolute;left:0;top:8px;width:5px;height:5px;border-radius:50%;background:var(--line);
  transition:background-color .2s var(--ease);
}
.toc-list li a:hover{color:var(--green-800);}
.toc-list li a:hover::before{background:var(--accent);}
.side-links{display:grid;gap:4px;}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;border-bottom:1px dashed var(--line);
  font-size:14.5px;color:var(--ink);
}
.side-links a:last-child{border-bottom:0;}
.side-links a i{font-size:12px;color:var(--muted);transition:transform .2s var(--ease),color .2s var(--ease);}
.side-links a:hover{color:var(--green-800);}
.side-links a:hover i{transform:translateX(4px);color:var(--accent-dark);}
.side-cta{
  background:linear-gradient(160deg,var(--green-800),var(--green-900));
  border-color:var(--green-900);color:#fff;
}
.side-cta h3{color:#fff;}
.side-cta p{font-size:14px;color:rgba(255,255,255,.76);margin-bottom:16px;line-height:1.75;}
.side-cta .btn{width:100%;}
.side-note{display:block;margin-top:12px;font-size:12px;color:rgba(255,255,255,.55);}

/* ---------- related ---------- */
.related-section{padding:8px 0 0;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px;}
.sec-head h2{font-size:32px;font-weight:700;line-height:1.25;letter-spacing:-.015em;color:var(--green-900);}
.sec-head p{font-size:14.5px;color:var(--muted);margin-top:8px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(198,240,78,.6);}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--sand);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body .badge{align-self:flex-start;}
.rel-body h3{font-size:18px;font-weight:600;line-height:1.5;color:var(--green-900);}
.rel-body p{font-size:14px;color:var(--muted);line-height:1.75;flex:1;}
.rel-body .btn-link{font-size:13.5px;align-self:flex-start;}

/* ---------- cta band ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--green-900) 0%,var(--green-800) 62%,#12503F 100%);
  color:#fff;border-radius:24px;padding:56px 56px;
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:40px;align-items:center;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  border:1px solid rgba(198,240,78,.24);
}
.cta-band h2{font-size:34px;font-weight:800;line-height:1.25;letter-spacing:-.02em;margin-bottom:14px;position:relative;z-index:1;}
.cta-band p{font-size:15.5px;color:rgba(255,255,255,.78);line-height:1.85;position:relative;z-index:1;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1;}
.cta-actions .btn-ghost{color:#fff;border-color:rgba(255,255,255,.35);background:rgba(255,255,255,.04);}
.cta-actions .btn-ghost:hover{border-color:var(--accent);color:var(--accent);background:rgba(255,255,255,.08);}

/* ---------- modal ---------- */
.modal{
  position:fixed;inset:0;z-index:200;display:none;
  background:rgba(7,42,36,.55);backdrop-filter:blur(3px);
  padding:24px;overflow-y:auto;
}
.modal.is-open{display:flex;align-items:center;justify-content:center;}
.modal-card{
  width:100%;max-width:520px;background:#fff;border-radius:20px;
  padding:32px 32px 26px;box-shadow:var(--shadow-modal);
  position:relative;animation:modalIn .28s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:translateY(0);}}
.modal-card h3{font-size:22px;font-weight:700;color:var(--green-900);margin-bottom:8px;}
.modal-card .modal-sub{font-size:14px;color:var(--muted);margin-bottom:22px;line-height:1.75;}
.modal-close{
  position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--muted);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.modal-close:hover{border-color:var(--accent);color:var(--green-900);}
.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:13.5px;font-weight:600;color:var(--green-900);margin-bottom:8px;}
.form-field input,.form-field select,.form-field textarea{
  width:100%;min-height:46px;padding:11px 14px;
  border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;font-size:15px;color:var(--ink);font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-field textarea{min-height:88px;resize:vertical;line-height:1.7;}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{
  border-color:var(--accent);box-shadow:0 0 0 2px rgba(198,240,78,.45);outline:none;
}
.form-error{display:block;font-size:13px;color:var(--error);margin-top:6px;min-height:0;}
.privacy-line{display:flex;gap:10px;align-items:flex-start;margin:8px 0 18px;font-size:13px;color:var(--muted);line-height:1.7;}
.privacy-line input{margin-top:4px;width:16px;height:16px;accent-color:var(--green-800);flex-shrink:0;}
.modal-card .btn{width:100%;}

/* ---------- footer ---------- */
.site-footer{background:var(--green-900);color:rgba(255,255,255,.72);padding:72px 0 32px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;}
.footer-brand .logo{margin-bottom:18px;}
.footer-brand .logo-text b{color:#fff;}
.footer-brand .logo-text small{color:rgba(255,255,255,.45);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-col ul a:hover{color:var(--accent);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.68);line-height:1.7;align-items:flex-start;}
.footer-contact i{color:var(--accent);font-size:13px;margin-top:6px;}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.52);
}

/* ---------- mobile tabbar & to-top ---------- */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:150;
  background:rgba(255,255,255,.96);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar-inner{display:grid;grid-template-columns:repeat(4,1fr);height:62px;}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--muted);
}
.tab-item i{font-size:19px;transition:transform .22s var(--ease),color .22s var(--ease);}
.tab-item::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
  width:30px;height:2px;background:var(--accent);border-radius:0 0 3px 3px;
  transition:transform .22s var(--ease);
}
.tab-item.is-active{color:var(--green-900);font-weight:600;}
.tab-item.is-active i{color:var(--green-800);transform:scale(1.08);}
.tab-item.is-active::before{transform:translateX(-50%) scaleX(1);}
.to-top{
  position:fixed;right:22px;bottom:30px;z-index:140;
  width:46px;height:46px;border-radius:50%;
  background:var(--green-800);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 28px rgba(7,42,36,.24);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),background-color .2s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--green-900);}

/* ---------- reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
[data-reveal].is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1240px){
  .article-hero h1{font-size:40px;}
  .cta-band{padding:48px 40px;}
}
@media (max-width:1023px){
  body{padding-bottom:76px;}
  .nav-links{display:none;}
  .nav-icon-btn{display:flex;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px;padding:44px 0 16px;}
  .article-side{position:static;}
  .article-card{padding:36px 32px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px;}
  .tabbar{display:block;}
  .to-top{bottom:86px;right:18px;}
  .section{padding:72px 0;}
  .site-footer{margin-top:72px;}
}
@media (max-width:760px){
  .article-hero{padding:52px 0 46px;}
  .article-hero h1{font-size:31px;max-width:none;}
  .article-card{padding:28px 22px;border-radius:var(--r-card);}
  .article-body{font-size:16.5px;line-height:1.88;}
  .article-body h2{font-size:24px;}
  .article-body h3{font-size:19.5px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .sec-head h2{font-size:26px;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .post-nav{grid-template-columns:minmax(0,1fr);}
  .post-nav .next{text-align:left;}
  .cta-band{padding:36px 24px;border-radius:20px;}
  .cta-band h2{font-size:26px;}
  .modal{padding:0;align-items:flex-end;}
  .modal-card{max-width:none;border-radius:20px 20px 0 0;padding:28px 20px calc(24px + env(safe-area-inset-bottom));}
}
@media (max-width:520px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .logo-text small{display:none;}
  .logo-text b{font-size:15px;}
  .article-hero h1{font-size:28px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .badge{font-size:11.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  [data-reveal]{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --ink:#0B3A31;
  --ink-deep:#072A24;
  --accent:#C6F04E;
  --accent-soft:rgba(198,240,78,.18);
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --sand:#E7E2D8;
  --text:#17211F;
  --text-2:#5C6B66;
  --border:#DCD7CC;
  --success:#2E7D5B;
  --warn:#C4661F;
  --error:#B4402F;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --shadow-hover:0 12px 32px rgba(11,58,49,.10);
  --shadow-modal:0 24px 64px rgba(7,42,36,.18);
  --ease:cubic-bezier(.22,.8,.24,1);
  --container:1240px;
  --tab-h:64px;
}

/* ============ reset / base ============ */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; height:auto; }
a{ color:var(--ink); text-decoration:none; transition:color .2s var(--ease), opacity .2s var(--ease); }
a:hover{ color:var(--ink-deep); }
button{ font-family:inherit; cursor:pointer; border:none; background:none; color:inherit; }
input,select,textarea{ font-family:inherit; font-size:15px; color:var(--text); }
h1,h2,h3,h4{ margin:0; font-weight:700; color:var(--text); letter-spacing:-.01em; }
p{ margin:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; border-radius:4px; }

.grid-container{
  max-width:var(--container);
  width:100%;
  margin-left:auto;
  margin-right:auto;
  padding-left:24px;
  padding-right:24px;
}
.grid-x{ margin-left:-12px; margin-right:-12px; }
.grid-x > .cell{ padding-left:12px; padding-right:12px; }

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
  white-space:nowrap;
}
.btn i{ transition:transform .22s var(--ease); }
.btn-primary{ background:var(--ink); color:#fff; }
.btn-primary:hover{ background:var(--ink-deep); color:#fff; }
.btn-primary:hover i{ transform:translateX(4px); }
.btn-accent{ background:var(--accent); color:var(--ink-deep); }
.btn-accent:hover{ background:#d5f873; color:var(--ink-deep); }
.btn-accent:hover i{ transform:translateX(4px); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--border); }
.btn-ghost:hover{ border-color:var(--accent); color:var(--ink-deep); }
.btn-sm{ min-height:40px; padding:0 16px; font-size:14px; }
.btn-lg{ min-height:54px; padding:0 30px; font-size:16px; }
.btn-block{ width:100%; }

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1.6;
  background:#EAF3EF;
  color:var(--ink);
}
.badge-accent{ background:var(--accent-soft); color:#3d5310; }
.badge-sand{ background:var(--sand); color:var(--text-2); }

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:28px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(198,240,78,.55);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--ink);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:26px;
  height:2px;
  background:var(--accent);
  display:inline-block;
}

.section{ padding:96px 0; }
.section-tight{ padding:72px 0; }
.section-head{ margin-bottom:44px; }
.section-head h2{
  font-size:clamp(26px,3.2vw,38px);
  line-height:1.25;
  margin:14px 0 12px;
}
.section-head p{ color:var(--text-2); max-width:720px; font-size:16px; }

.arrow-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid rgba(11,58,49,.28);
  padding-bottom:2px;
}
.arrow-link i{ transition:transform .22s var(--ease); }
.arrow-link:hover{ color:var(--ink-deep); border-color:var(--accent); }
.arrow-link:hover i{ transform:translateX(4px); }

.reveal{ opacity:0; transform:translateY(16px); transition:opacity .48s var(--ease),transform .48s var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:120;
  background:rgba(246,244,239,.88);
  backdrop-filter:saturate(160%) blur(10px);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:height .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease);
}
.site-header .nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:78px;
  transition:height .24s var(--ease);
}
.site-header.is-shrink{ border-bottom-color:var(--border); background:rgba(246,244,239,.94); }
.site-header.is-shrink .nav-inner{ height:62px; }

.logo{ display:inline-flex; align-items:center; gap:11px; }
.logo-mark{
  width:32px; height:32px;
  border-radius:9px;
  background:var(--ink);
  position:relative;
  overflow:hidden;
  flex:none;
}
.logo-mark::before{
  content:"";
  position:absolute; inset:0;
  border:2px solid var(--accent);
  border-radius:50%;
  width:22px; height:22px;
  margin:5px;
  border-right-color:transparent;
  border-bottom-color:transparent;
  transform:rotate(-30deg);
}
.logo-mark::after{
  content:"";
  position:absolute;
  left:6px; bottom:7px;
  width:14px; height:3px;
  background:var(--accent);
  box-shadow:0 -6px 0 rgba(198,240,78,.6), 0 -12px 0 rgba(198,240,78,.32);
}
.logo-text{ display:flex; flex-direction:column; line-height:1.15; }
.logo-text b{ font-size:16px; font-weight:800; color:var(--ink-deep); letter-spacing:-.01em; }
.logo-text small{ font-size:10px; letter-spacing:.18em; color:var(--text-2); font-weight:600; }

.nav-links{ display:flex; align-items:center; gap:4px; }
.nav-link{
  position:relative;
  padding:9px 14px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{ color:var(--ink-deep); background:rgba(11,58,49,.05); }
.nav-link.is-active{ color:var(--ink-deep); background:#EAF3EF; }
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:50%; bottom:1px;
  transform:translateX(-50%);
  width:16px; height:2px;
  border-radius:2px;
  background:var(--accent);
}
.nav-actions{ display:flex; align-items:center; gap:10px; }
.nav-icon-btn{
  display:none;
  width:42px; height:42px;
  border-radius:12px;
  border:1px solid var(--border);
  align-items:center;
  justify-content:center;
  color:var(--ink);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-icon-btn:hover{ border-color:var(--accent); background:#fff; }

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  margin-top:78px;
  padding:96px 0 78px;
  background-image:linear-gradient(100deg,rgba(7,42,36,.90) 0%,rgba(11,58,49,.76) 48%,rgba(11,58,49,.50) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center 32%;
  color:#fff;
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;
  right:-120px; bottom:-160px;
  width:420px; height:420px;
  border-radius:50%;
  border:1px solid rgba(198,240,78,.28);
  pointer-events:none;
}
.cat-hero .grid-container{ position:relative; z-index:2; }
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.68);
  margin-bottom:22px;
}
.breadcrumb a{ color:rgba(255,255,255,.78); }
.breadcrumb a:hover{ color:var(--accent); }
.breadcrumb span.sep{ opacity:.5; }
.cat-hero h1{
  color:#fff;
  font-size:clamp(30px,4.6vw,56px);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.02em;
  max-width:860px;
}
.cat-hero h1 em{ font-style:normal; color:var(--accent); }
.cat-hero .hero-sub{
  margin-top:22px;
  font-size:17px;
  line-height:1.85;
  color:rgba(255,255,255,.82);
  max-width:660px;
}
.hero-actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:34px; }
.hero-tags{
  display:flex; flex-wrap:wrap; gap:10px;
  margin-top:44px;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-tags li{
  display:inline-flex; align-items:center; gap:7px;
  font-size:13px; font-weight:600;
  color:rgba(255,255,255,.86);
}
.hero-tags li i{ color:var(--accent); font-size:12px; }

/* ============ 分类页主体：左侧粘性导航 + 右侧内容 ============ */
.cat-layout{
  display:grid;
  grid-template-columns:264px minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.side-nav{
  position:sticky;
  top:104px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:22px 20px;
}
.side-nav .side-title{
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--text-2);
  text-transform:uppercase;
  padding-bottom:14px;
  border-bottom:1px solid var(--border);
  margin-bottom:14px;
}
.side-nav ul{ display:flex; flex-direction:column; gap:2px; }
.side-nav a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-radius:10px;
  font-size:14px;
  font-weight:600;
  color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease),padding-left .2s var(--ease);
}
.side-nav a::before{
  content:"";
  width:6px; height:6px;
  border-radius:50%;
  background:var(--border);
  flex:none;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.side-nav a:hover{ background:#F2F6F3; color:var(--ink-deep); padding-left:16px; }
.side-nav a:hover::before{ background:var(--accent); transform:scale(1.2); }
.side-cta{
  margin-top:20px;
  padding:20px;
  border-radius:14px;
  background:var(--ink);
  color:#fff;
}
.side-cta p{ font-size:13px; line-height:1.75; color:rgba(255,255,255,.78); margin-bottom:14px; }
.side-cta .btn{ width:100%; }

.cat-content > section{ margin-bottom:88px; }
.cat-content > section:last-child{ margin-bottom:0; }

.block-head{ margin-bottom:30px; }
.block-head h2{ font-size:clamp(23px,2.6vw,32px); line-height:1.3; margin:12px 0 10px; }
.block-head p{ color:var(--text-2); max-width:700px; }

/* 图文介绍块 */
.feature-split{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
}
.feature-media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--border);
  aspect-ratio:4/3;
}
.feature-media img{ width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease); }
.feature-media:hover img{ transform:scale(1.03); }
.feature-media .media-tag{
  position:absolute;
  left:16px; top:16px;
  background:rgba(7,42,36,.82);
  color:var(--accent);
  font-size:12px;
  font-weight:700;
  padding:6px 12px;
  border-radius:999px;
  backdrop-filter:blur(4px);
}
.feature-body h3{ font-size:22px; margin-bottom:14px; }
.feature-body p{ color:var(--text-2); margin-bottom:18px; }

.check-list{ display:flex; flex-direction:column; gap:12px; }
.check-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:15px;
  line-height:1.8;
}
.check-list li i{
  color:var(--ink);
  background:var(--accent-soft);
  width:22px; height:22px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:11px;
  flex:none;
  margin-top:5px;
}

/* 项目卡片流 */
.project-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.project-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.project-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(198,240,78,.55);
}
.project-thumb{ position:relative; aspect-ratio:16/9; overflow:hidden; }
.project-thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease); }
.project-card:hover .project-thumb img{ transform:scale(1.04); }
.project-thumb .heat{
  position:absolute;
  right:12px; top:12px;
  background:rgba(7,42,36,.84);
  color:var(--accent);
  font-size:11px;
  font-weight:700;
  padding:4px 10px;
  border-radius:999px;
}
.project-body{ padding:20px 22px 22px; display:flex; flex-direction:column; flex:1; }
.project-body .idx{
  font-size:12px;
  font-weight:800;
  letter-spacing:.1em;
  color:var(--text-2);
  margin-bottom:8px;
}
.project-body h3{ font-size:19px; margin-bottom:10px; }
.project-body p{ font-size:14px; color:var(--text-2); line-height:1.8; margin-bottom:16px; }
.project-body .tags{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:18px; }
.project-body .foot{ margin-top:auto; }

/* 流程 */
.flow{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
  counter-reset:flow;
}
.flow-step{
  position:relative;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:26px 22px 24px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.flow-step:hover{ transform:translateY(-4px); box-shadow:var(--shadow-hover); border-color:rgba(198,240,78,.55); }
.flow-step .step-num{
  font-size:13px;
  font-weight:800;
  letter-spacing:.12em;
  color:var(--ink);
  background:var(--accent-soft);
  padding:4px 10px;
  border-radius:999px;
  display:inline-block;
  margin-bottom:16px;
}
.flow-step h3{ font-size:18px; margin-bottom:10px; }
.flow-step p{ font-size:14px; color:var(--text-2); line-height:1.8; }
.flow-bar{
  height:6px;
  border-radius:999px;
  background:var(--sand);
  margin-bottom:34px;
  overflow:hidden;
}
.flow-bar span{
  display:block;
  height:100%;
  width:0;
  border-radius:999px;
  background:linear-gradient(90deg,var(--ink),var(--accent));
  transition:width 1.2s var(--ease);
}

/* 数据小条 */
.metrics{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.metric{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:26px 24px;
}
.metric::before{
  content:"";
  display:block;
  width:36px;
  height:2px;
  background:var(--accent);
  margin-bottom:18px;
}
.metric .num{
  font-size:clamp(38px,4.4vw,60px);
  font-weight:800;
  line-height:1;
  color:var(--ink-deep);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.metric .num small{ font-size:16px; font-weight:700; margin-left:4px; color:var(--text-2); }
.metric .label{ margin-top:14px; font-size:15px; font-weight:600; }
.metric .note{ margin-top:6px; font-size:12.5px; color:var(--text-2); line-height:1.7; }

/* 变动说明 */
.notice-block{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,.86fr);
  gap:36px;
  align-items:center;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  padding:38px;
}
.notice-block h3{ font-size:22px; margin-bottom:16px; }
.notice-list{ display:flex; flex-direction:column; gap:16px; }
.notice-list li{
  display:flex;
  gap:14px;
  padding-bottom:16px;
  border-bottom:1px solid var(--border);
}
.notice-list li:last-child{ border-bottom:none; padding-bottom:0; }
.notice-list i{
  width:38px; height:38px;
  border-radius:12px;
  background:var(--accent-soft);
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  flex:none;
}
.notice-list b{ display:block; font-size:15.5px; margin-bottom:4px; }
.notice-list span{ font-size:14px; color:var(--text-2); line-height:1.8; }
.notice-media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--border);
  aspect-ratio:4/3;
}
.notice-media img{ width:100%; height:100%; object-fit:cover; }

/* FAQ */
.faq-list{ border-top:1px solid var(--border); }
.faq-item{ border-bottom:1px solid var(--border); }
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary:hover{ color:var(--ink); }
.faq-item summary .mark{
  flex:none;
  width:26px; height:26px;
  border-radius:50%;
  border:1px solid var(--border);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  color:var(--ink);
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .24s var(--ease);
  margin-top:2px;
}
.faq-item summary .mark::after{ content:"+"; font-weight:700; }
.faq-item[open] summary .mark{ background:var(--accent); border-color:var(--accent); transform:rotate(180deg); }
.faq-item[open] summary .mark::after{ content:"−"; }
.faq-answer{ padding:0 4px 24px; font-size:15.5px; line-height:1.9; color:var(--text-2); max-width:760px; }

/* 相关链接 */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.related-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:24px;
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--r-card);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-hover); border-color:rgba(198,240,78,.55); }
.related-card b{ font-size:17px; }
.related-card p{ font-size:14px; color:var(--text-2); line-height:1.8; }
.related-card .arrow-link{ margin-top:6px; }

/* 底部 CTA 通栏 */
.cta-band{
  background:var(--ink);
  color:#fff;
  border-radius:24px;
  padding:56px 48px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:36px;
  align-items:center;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:-90px; top:-90px;
  width:280px; height:280px;
  border-radius:50%;
  border:1px solid rgba(198,240,78,.25);
}
.cta-band h2{ color:#fff; font-size:clamp(23px,2.8vw,34px); line-height:1.3; margin-bottom:12px; }
.cta-band p{ color:rgba(255,255,255,.76); font-size:15.5px; max-width:600px; }
.cta-actions{ display:flex; flex-wrap:wrap; gap:14px; position:relative; z-index:2; }

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.72);
  padding:72px 0 32px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand .logo{ margin-bottom:18px; }
.footer-brand .logo-text b{ color:#fff; }
.footer-brand .logo-text small{ color:rgba(255,255,255,.5); }
.footer-brand .logo-mark{ background:rgba(255,255,255,.10); }
.footer-brand p{ font-size:14px; line-height:1.9; color:rgba(255,255,255,.62); max-width:380px; }
.footer-col h4{ color:#fff; font-size:15px; margin-bottom:18px; }
.footer-col ul{ display:flex; flex-direction:column; gap:11px; }
.footer-col a{ font-size:14px; color:rgba(255,255,255,.66); }
.footer-col a:hover{ color:var(--accent); }
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  line-height:1.8;
  color:rgba(255,255,255,.66);
}
.footer-contact i{ color:var(--accent); font-size:13px; margin-top:7px; }
.footer-bottom{
  padding-top:24px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.48);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tabbar{
  display:none;
  position:fixed;
  left:0; right:0; bottom:0;
  z-index:130;
  height:calc(var(--tab-h) + env(safe-area-inset-bottom,0px));
  padding-bottom:env(safe-area-inset-bottom,0px);
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
}
.mobile-tabbar ul{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  height:var(--tab-h);
}
.mobile-tabbar a{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  font-size:11px;
  font-weight:600;
  color:var(--text-2);
  transition:color .2s var(--ease);
}
.mobile-tabbar a i{ font-size:22px; transition:transform .22s var(--ease); }
.mobile-tabbar a.is-active{ color:var(--ink); }
.mobile-tabbar a.is-active i{ transform:scale(1.08); }
.mobile-tabbar a.is-active::before{
  content:"";
  position:absolute;
  top:0; left:50%;
  transform:translateX(-50%);
  width:26px; height:2px;
  border-radius:2px;
  background:var(--accent);
}
body.has-tabbar{ padding-bottom:calc(var(--tab-h) + env(safe-area-inset-bottom,0px) + 8px); }

/* ============ 弹层表单 ============ */
.modal-mask{
  position:fixed;
  inset:0;
  z-index:200;
  background:rgba(7,42,36,.55);
  backdrop-filter:blur(3px);
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.modal-mask.is-open{ display:flex; }
.modal{
  width:100%;
  max-width:520px;
  background:#fff;
  border-radius:20px;
  box-shadow:var(--shadow-modal);
  padding:32px;
  position:relative;
  max-height:88vh;
  overflow-y:auto;
  animation:modalIn .28s var(--ease);
}
@keyframes modalIn{ from{ opacity:0; transform:translateY(14px); } to{ opacity:1; transform:none; } }
.modal h3{ font-size:22px; margin-bottom:8px; }
.modal .modal-sub{ font-size:14px; color:var(--text-2); margin-bottom:24px; line-height:1.8; }
.modal-close{
  position:absolute;
  right:18px; top:18px;
  width:36px; height:36px;
  border-radius:10px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.modal-close:hover{ background:var(--sand); color:var(--text); }
.field{ margin-bottom:16px; }
.field label{ display:block; font-size:13.5px; font-weight:600; margin-bottom:8px; }
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;
  padding:12px 14px;
  border:1px solid var(--border);
  border-radius:var(--r-input);
  background:#FCFBF8;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{ min-height:92px; resize:vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(198,240,78,.5);
  background:#fff;
}
.field .err{ display:none; font-size:13px; color:var(--error); margin-top:6px; }
.field.has-error input,
.field.has-error select{ border-color:var(--error); }
.field.has-error .err{ display:block; }
.privacy-row{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:12.5px;
  color:var(--text-2);
  line-height:1.75;
  margin:6px 0 18px;
}
.privacy-row input{ margin-top:4px; accent-color:var(--ink); width:16px; height:16px; flex:none; }
.form-note{ font-size:12px; color:var(--text-2); text-align:center; margin-top:12px; }

/* 回到顶部 */
.to-top{
  position:fixed;
  right:22px;
  bottom:calc(var(--tab-h) + env(safe-area-inset-bottom,0px) + 18px);
  z-index:110;
  width:46px; height:46px;
  border-radius:14px;
  background:#fff;
  border:1px solid var(--border);
  box-shadow:0 8px 24px rgba(11,58,49,.10);
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.to-top.is-show{ opacity:1; visibility:visible; transform:none; }
.to-top:hover{ border-color:var(--accent); }

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .cat-layout{ grid-template-columns:230px minmax(0,1fr); gap:40px; }
  .footer-grid{ grid-template-columns:1.5fr 1fr 1fr 1.2fr; gap:28px; }
}

@media (max-width:1023px){
  .nav-links{ display:none; }
  .nav-actions .btn{ display:none; }
  .nav-icon-btn{ display:inline-flex; }
  .site-header .nav-inner{ height:56px; }
  .site-header.is-shrink .nav-inner{ height:56px; }
  .logo-mark{ width:28px; height:28px; }
  .logo-mark::before{ width:18px; height:18px; margin:5px; }
  .logo-mark::after{ left:5px; bottom:6px; width:12px; }
  .logo-text b{ font-size:15px; }
  .logo-text small{ display:none; }

  .cat-hero{ margin-top:56px; padding:64px 0 56px; background-position:center 24%; }
  .cat-hero .hero-sub{ font-size:15.5px; }
  .hero-actions .btn{ flex:1 1 auto; }

  .section{ padding:64px 0; }
  .section-tight{ padding:52px 0; }

  .cat-layout{ grid-template-columns:1fr; gap:36px; }
  .side-nav{ position:static; }
  .side-nav ul{ flex-direction:row; flex-wrap:wrap; gap:8px; }
  .side-nav a{ background:#F2F6F3; padding:8px 12px; }
  .side-nav a:hover{ padding-left:12px; }
  .side-cta{ margin-top:18px; }

  .feature-split{ grid-template-columns:1fr; gap:26px; }
  .project-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); gap:18px; }
  .flow{ grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
  .metrics{ grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
  .notice-block{ grid-template-columns:1fr; padding:26px; }
  .related-grid{ grid-template-columns:1fr; }
  .cta-band{ grid-template-columns:1fr; padding:38px 26px; border-radius:20px; text-align:left; }

  .site-footer{ margin-top:64px; padding:52px 0 26px; }
  .footer-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); gap:28px; }
  .footer-brand{ grid-column:1 / -1; }
  .footer-bottom{ flex-direction:column; gap:8px; }

  .mobile-tabbar{ display:block; }
  .to-top{ bottom:calc(var(--tab-h) + env(safe-area-inset-bottom,0px) + 14px); }
}

@media (max-width:639px){
  .grid-container{ padding-left:20px; padding-right:20px; }
  .grid-x{ margin-left:-8px; margin-right:-8px; }
  .grid-x > .cell{ padding-left:8px; padding-right:8px; }
  body{ font-size:15px; }
  .cat-hero h1{ font-size:30px; }
  .cat-content > section{ margin-bottom:56px; }
  .project-grid{ grid-template-columns:1fr; }
  .flow{ grid-template-columns:1fr; }
  .metrics{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .metric{ padding:20px 18px; }
  .card{ padding:22px; }
  .modal-mask{ align-items:flex-end; padding:0; }
  .modal{ max-width:none; border-radius:20px 20px 0 0; padding:26px 22px calc(26px + env(safe-area-inset-bottom,0px)); max-height:92vh; }
  .cta-band{ padding:32px 22px; }
  .hero-actions .btn{ width:100%; }
  .footer-grid{ grid-template-columns:1fr; gap:26px; }
}

@media (prefers-reduced-motion:reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
  .reveal{ opacity:1 !important; transform:none !important; }
}

/* roulang page: category2 */
:root{
  --ink:#0B3A31;
  --ink-deep:#072A24;
  --ink-soft:rgba(11,58,49,.08);
  --accent:#C6F04E;
  --accent-soft:rgba(198,240,78,.20);
  --bg:#F6F4EF;
  --card:#FFFFFF;
  --sand:#E7E2D8;
  --text:#17211F;
  --muted:#5C6B66;
  --border:#DCD7CC;
  --success:#2E7D5B;
  --warn:#C4661F;
  --error:#B4402F;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --shadow-card:0 12px 32px rgba(11,58,49,.10);
  --shadow-modal:0 24px 64px rgba(7,42,36,.18);
  --ease:cubic-bezier(.22,.8,.24,1);
  --container:1240px;
  --header-h:76px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0 0 72px;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);}
a:hover{color:var(--ink);}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,textarea,select{font-family:inherit;font-size:16px;}
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:4px;}

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

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:900;
  height:var(--header-h);
  background:rgba(246,244,239,.86);
  backdrop-filter:saturate(160%) blur(12px);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid transparent;
  transition:height .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{
  height:64px;
  background:rgba(246,244,239,.94);
  border-bottom-color:var(--border);
}
.nav-inner{
  height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--ink) 0%,var(--ink-deep) 100%);
  position:relative;overflow:hidden;
}
.logo-mark::before{
  content:"";position:absolute;left:6px;top:8px;width:18px;height:14px;
  border:2px solid var(--accent);border-radius:50% 50% 50% 50%/60% 60% 40% 40%;
  border-bottom-color:transparent;transform:rotate(-12deg);
}
.logo-mark::after{
  content:"";position:absolute;left:13px;top:5px;width:2px;height:20px;background:var(--accent);
  border-radius:2px;transform:rotate(20deg);opacity:.9;
}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-text b{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--ink);}
.logo-text small{font-size:9px;letter-spacing:.22em;color:var(--muted);font-weight:600;margin-top:3px;}
.nav-links{display:flex;align-items:center;gap:8px;}
.nav-link{
  position:relative;padding:10px 14px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--muted);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--ink);background:var(--ink-soft);}
.nav-link.is-active{color:var(--ink);}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-icon-btn{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  background:var(--ink);color:#fff;align-items:center;justify-content:center;font-size:17px;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.nav-icon-btn:hover{background:var(--ink-deep);transform:translateY(-1px);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;line-height:1;
  border:1px solid transparent;position:relative;overflow:hidden;
  transition:border-color .22s var(--ease),color .22s var(--ease),background-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn i{transition:transform .22s var(--ease);}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary::before{
  content:"";position:absolute;inset:0;background:var(--accent);
  transform:translateX(-101%);transition:transform .3s var(--ease);
}
.btn-primary span,.btn-primary i{position:relative;z-index:1;}
.btn-primary:hover{color:var(--ink-deep);}
.btn-primary:hover::before{transform:translateX(0);}
.btn-accent{background:var(--accent);color:var(--ink-deep);}
.btn-accent::before{
  content:"";position:absolute;inset:0;background:var(--ink);
  transform:translateX(-101%);transition:transform .3s var(--ease);
}
.btn-accent span,.btn-accent i{position:relative;z-index:1;}
.btn-accent:hover{color:#fff;}
.btn-accent:hover::before{transform:translateX(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--border);}
.btn-ghost:hover{border-color:var(--accent);color:var(--ink-deep);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn:hover i.fa-arrow-right{transform:translateX(4px);}
.btn-block{width:100%;}
.btn-lg{min-height:54px;padding:0 30px;font-size:16px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--border);padding-bottom:2px;
}
.link-arrow:hover{border-bottom-color:var(--accent);}
.link-arrow i{transition:transform .22s var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 通用排版 ============ */
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-dark{background:var(--ink-deep);color:#fff;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.18em;color:var(--muted);
  text-transform:uppercase;margin-bottom:18px;
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--accent);border-radius:2px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(26px,3.4vw,38px);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--ink);max-width:720px;}
.section-head p{color:var(--muted);font-size:16px;max-width:620px;margin-top:14px;}
.section-dark .section-head h2{color:#fff;}
.section-dark .section-head p{color:rgba(255,255,255,.72);}
.section-dark .eyebrow{color:rgba(255,255,255,.6);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  background:var(--accent-soft);color:var(--ink);
}
.badge-plain{background:var(--sand);color:var(--muted);}
.badge-outline{background:transparent;border:1px solid var(--border);color:var(--muted);}
.section-dark .badge{background:rgba(198,240,78,.16);color:var(--accent);}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;margin-top:var(--header-h);
  min-height:520px;display:flex;align-items:center;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center 30%;
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(7,42,36,.94) 0%,rgba(11,58,49,.82) 42%,rgba(11,58,49,.42) 78%,rgba(11,58,49,.24) 100%);
}
.cat-hero .grid-container{position:relative;z-index:2;padding-top:72px;padding-bottom:72px;}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.62);margin-bottom:26px;
}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span.sep{opacity:.5;}
.breadcrumb .current{color:rgba(255,255,255,.92);font-weight:600;}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,54px);font-weight:800;line-height:1.14;letter-spacing:-.02em;
  color:#fff;max-width:820px;
}
.cat-hero h1 em{font-style:normal;color:var(--accent);}
.cat-hero .hero-sub{
  margin-top:22px;font-size:clamp(15px,1.6vw,18px);line-height:1.85;
  color:rgba(255,255,255,.8);max-width:640px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:40px;
  padding-top:26px;border-top:1px solid rgba(255,255,255,.16);
}
.hero-trust span{
  font-size:13px;font-weight:600;color:rgba(255,255,255,.82);
  padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.14);
}

/* ============ 横向卡片流 ============ */
.rail-wrap{position:relative;}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 24px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  scrollbar-width:thin;scrollbar-color:var(--border) transparent;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px;}
.rail::-webkit-scrollbar-track{background:transparent;}
.rail-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px 26px 26px;display:flex;flex-direction:column;gap:14px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:rgba(198,240,78,.9);}
.rail-num{
  font-size:40px;font-weight:800;line-height:1;letter-spacing:-.03em;color:var(--sand);
  font-variant-numeric:tabular-nums;
}
.rail-card:hover .rail-num{color:var(--accent);}
.rail-card h3{font-size:20px;font-weight:600;line-height:1.4;color:var(--ink);}
.rail-card p{font-size:15px;line-height:1.8;color:var(--muted);}
.rail-card .rail-divider{height:1px;background:var(--border);margin-top:auto;}
.rail-card .rail-foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);}
.rail-hint{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:8px;}

/* ============ 图文区块 ============ */
.split{
  display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center;
}
.split-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--border);
  background:var(--sand);aspect-ratio:4/3;
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.split h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.28;color:var(--ink);letter-spacing:-.01em;}
.split > div > p{margin-top:18px;color:var(--muted);font-size:16px;}
.check-list{margin-top:26px;display:grid;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text);}
.check-list i{
  flex-shrink:0;width:22px;height:22px;margin-top:3px;border-radius:50%;
  background:var(--accent);color:var(--ink-deep);font-size:11px;
  display:inline-flex;align-items:center;justify-content:center;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}

/* ============ 数据小条 ============ */
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
  padding:40px 0 0;border-top:1px solid rgba(255,255,255,.16);
}
.stat-item{padding-top:18px;position:relative;}
.section-dark .stat-item::before{content:"";position:absolute;top:0;left:0;width:36px;height:2px;background:var(--accent);border-radius:2px;}
.stat-num{font-size:clamp(38px,5vw,68px);font-weight:800;line-height:1;letter-spacing:-.03em;color:var(--accent);font-variant-numeric:tabular-nums;}
.stat-num small{font-size:.4em;font-weight:700;margin-left:4px;letter-spacing:0;}
.stat-label{margin-top:12px;font-size:15px;font-weight:600;color:#fff;}
.stat-note{margin-top:6px;font-size:13px;color:rgba(255,255,255,.6);line-height:1.7;}

/* ============ 对比表 ============ */
.compare-wrap{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;
}
.compare-table{width:100%;border-collapse:collapse;margin:0;background:transparent;}
.compare-table thead th{
  background:var(--ink);color:#fff;
  font-size:14px;font-weight:700;letter-spacing:.02em;text-align:left;
  padding:20px 24px;border:0;
}
.compare-table thead th.is-highlight{background:var(--ink-deep);color:var(--accent);}
.compare-table tbody td{
  padding:18px 24px;border:0;border-top:1px solid var(--border);
  font-size:15px;color:var(--text);vertical-align:middle;
}
.compare-table tbody tr:nth-child(even) td{background:rgba(231,226,216,.28);}
.compare-table tbody td:first-child{font-weight:600;color:var(--ink);}
.compare-table .yes{color:var(--success);font-weight:700;font-size:14px;}
.compare-table .no{color:var(--muted);font-size:14px;}
.compare-table .col-hl{color:var(--ink);font-weight:700;}

/* ============ 流程 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.flow-step{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px 24px;position:relative;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--shadow-card);border-color:rgba(198,240,78,.9);}
.flow-step .step-idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;background:var(--ink);color:var(--accent);
  font-size:14px;font-weight:800;margin-bottom:18px;
}
.flow-step h3{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:10px;}
.flow-step p{font-size:14.5px;color:var(--muted);line-height:1.8;}

/* ============ FAQ ============ */
.faq-list{max-width:920px;margin:0 auto;border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;text-align:left;font-size:18px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--ink-deep);}
.faq-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;color:var(--ink);transition:background-color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.faq-item.is-open .faq-icon{background:var(--accent);border-color:var(--accent);transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .34s var(--ease);
}
.faq-a p{padding:0 4px 26px;font-size:15.5px;line-height:1.85;color:var(--muted);max-width:820px;}

/* ============ 大 CTA 通栏 ============ */
.cta-band{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  padding:72px 56px;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,42,36,.95) 0%,rgba(11,58,49,.86) 48%,rgba(11,58,49,.62) 100%);
}
.cta-band-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.cta-band h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;color:#fff;line-height:1.28;max-width:620px;}
.cta-band p{margin-top:16px;color:rgba(255,255,255,.78);font-size:16px;max-width:620px;}
.cta-band .btn-group{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.7);padding:72px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;}
.footer-brand .logo{margin-bottom:20px;}
.footer-brand .logo-text b{color:#fff;}
.footer-brand .logo-text small{color:rgba(255,255,255,.5);}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col ul a{font-size:14.5px;color:rgba(255,255,255,.66);}
.footer-col ul a:hover{color:var(--accent);}
.footer-contact li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.66);line-height:1.7;}
.footer-contact i{color:var(--accent);margin-top:5px;font-size:13px;}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 移动端底部 Tab ============ */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:950;
  display:none;
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 24px rgba(11,58,49,.06);
}
.mobile-tabbar ul{display:flex;align-items:stretch;}
.mobile-tabbar li{flex:1;}
.tab-link{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  padding:9px 4px 10px;height:100%;
  font-size:11px;font-weight:600;color:var(--muted);
  position:relative;text-align:center;line-height:1.3;
}
.tab-link i{font-size:22px;transition:transform .22s var(--ease);}
.tab-link::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%) scaleX(0);
  width:26px;height:2px;background:var(--accent);border-radius:2px;
  transition:transform .24s var(--ease);
}
.tab-link.is-active{color:var(--ink);}
.tab-link.is-active i{transform:scale(1.08);}
.tab-link.is-active::before{transform:translateX(-50%) scaleX(1);}

/* ============ 模态表单 ============ */
.modal-mask{
  position:fixed;inset:0;z-index:1000;display:none;
  background:rgba(7,42,36,.55);backdrop-filter:blur(3px);
  padding:24px;overflow-y:auto;
}
.modal-mask.is-open{display:flex;align-items:center;justify-content:center;}
.modal-card{
  width:100%;max-width:540px;background:#fff;border-radius:var(--r-card);
  box-shadow:var(--shadow-modal);padding:34px 32px 28px;position:relative;
  animation:modalIn .28s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:translateY(0);}}
.modal-close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--muted);border:1px solid var(--border);background:#fff;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.modal-close:hover{color:var(--ink);border-color:var(--ink);}
.modal-card h3{font-size:22px;font-weight:700;color:var(--ink);}
.modal-card > p{margin-top:10px;font-size:14.5px;color:var(--muted);}
.form-grid{display:grid;gap:16px;margin-top:24px;}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--r-input);
  background:#fff;color:var(--text);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#9AA6A1;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft);
}
.field-error{font-size:13px;color:var(--error);margin-top:6px;min-height:18px;}
.privacy-row{display:flex;align-items:flex-start;gap:10px;margin-top:18px;}
.privacy-row input{width:16px;height:16px;margin-top:4px;flex-shrink:0;accent-color:var(--ink);}
.privacy-row span{font-size:12.5px;color:var(--muted);line-height:1.7;}
.form-note{margin-top:14px;font-size:12.5px;color:var(--muted);text-align:center;}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:22px;bottom:88px;z-index:800;
  width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--border);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);border-color:var(--accent);}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-actions .btn-accent{display:none;}
  .nav-icon-btn{display:inline-flex;}
  .mobile-tabbar{display:block;}
  .split{grid-template-columns:1fr;gap:36px;}
  .flow{grid-template-columns:repeat(2,1fr);}
  .stats-bar{grid-template-columns:repeat(2,1fr);gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .section{padding:64px 0;}
  .cat-hero{min-height:440px;}
  .cta-band{padding:52px 32px;}
}
@media (max-width:640px){
  body{font-size:15px;padding-bottom:74px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .logo-text b{font-size:15px;}
  .logo-text small{font-size:8px;letter-spacing:.16em;}
  .cat-hero{margin-top:60px;min-height:400px;}
  .cat-hero .grid-container{padding-top:48px;padding-bottom:52px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .rail-card{flex:0 0 84%;}
  .flow{grid-template-columns:1fr;}
  .stats-bar{grid-template-columns:repeat(2,1fr);gap:20px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .compare-table thead th,.compare-table tbody td{padding:14px 14px;font-size:13.5px;}
  .cta-band{padding:40px 24px;border-radius:var(--r-card);}
  .cta-band .btn-group{width:100%;}
  .cta-band .btn-group .btn{flex:1;min-width:140px;}
  .section-sm{padding:48px 0;}
  .faq-q{font-size:16px;padding:20px 2px;}
  .modal-mask{padding:0;align-items:flex-end;}
  .modal-mask.is-open{align-items:flex-end;}
  .modal-card{max-width:100%;border-radius:20px 20px 0 0;padding:28px 22px 32px;animation:drawerIn .3s var(--ease);}
  @keyframes drawerIn{from{opacity:0;transform:translateY(40px);}to{opacity:1;transform:translateY(0);}}
  .to-top{right:16px;bottom:80px;}
}
@media (min-width:1024px){
  .mobile-tabbar{display:none;}
  .nav-icon-btn{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}