/* roulang page: index */
:root{
  --c-ink:#0E1512;
  --c-ink-2:#1C2621;
  --c-bg:#F4F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E2E6E1;
  --c-text:#1A211D;
  --c-muted:#667069;
  --c-primary:#00C08B;
  --c-primary-deep:#046B4F;
  --c-accent:#FF5A36;
  --c-accent-soft:#FFEDE7;
  --r-btn:12px;
  --r-card:16px;
  --r-panel:20px;
  --sh-1:0 1px 2px rgba(14,21,18,.06);
  --sh-2:0 14px 32px -14px rgba(14,21,18,.22);
  --sh-3:0 24px 60px -30px rgba(14,21,18,.45);
  --bs-body-bg:var(--c-bg);
  --bs-body-color:var(--c-text);
  --bs-border-color:var(--c-line);
  --bs-border-radius:var(--r-card);
  --bs-primary-rgb:0,192,139;
  --bs-link-color:var(--c-primary-deep);
  --bs-link-hover-color:var(--c-primary-deep);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease-out}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px;
}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{max-width:1240px;padding-left:24px;padding-right:24px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--c-primary-deep);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-primary);border-radius:2px}
.sec-head{margin-bottom:32px}
.sec-head h2{font-size:clamp(26px,3vw,34px);font-weight:700;line-height:1.24}
.sec-head p{margin-top:14px;color:var(--c-muted);max-width:720px}
.sec-head-row{display:flex;flex-wrap:wrap;gap:24px;align-items:flex-end;justify-content:space-between}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  padding:14px 0;
  background:rgba(244,245,242,0);
  transition:background .25s ease-out,box-shadow .25s ease-out,border-color .25s ease-out,padding .25s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
  padding:10px 0;
}
.header-bar{display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:800;color:var(--c-ink);letter-spacing:-.01em}
.brand-text small{font-size:12px;color:var(--c-muted);letter-spacing:.02em}
.nav-panel{
  margin-left:auto;
  display:flex;align-items:center;gap:6px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:18px;
  padding:8px;
  box-shadow:var(--sh-1);
  max-width:100%;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-panel::-webkit-scrollbar{display:none}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:12px;
  font-size:15px;font-weight:500;color:var(--c-muted);
  white-space:nowrap;
  transition:background .16s ease-out,color .16s ease-out;
  scroll-snap-align:start;
}
.nav-item i{font-size:13px;opacity:.75}
.nav-item:hover{background:#F0F3EF;color:var(--c-text)}
.nav-item.active{background:rgba(0,192,139,.12);color:var(--c-primary-deep);font-weight:600}
.nav-item.active i{opacity:1}
.nav-item.active::before{
  content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:3px;background:var(--c-primary);
}
.header-cta{flex:0 0 auto;padding:11px 20px;font-size:15px}

/* ---------- Buttons ---------- */
.btn{
  --bs-btn-border-radius:var(--r-btn);
  display:inline-flex;align-items:center;gap:9px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  padding:13px 24px;
  border:1px solid transparent;
  transition:background .14s ease-out,color .14s ease-out,transform .14s ease-out,box-shadow .14s ease-out,border-color .14s ease-out;
  line-height:1.2;
}
.btn i{transition:transform .14s ease-out}
.btn:hover i{transform:translateX(3px)}
.btn:active{transform:translateY(0) scale(.985)}
.btn-primary{
  background:var(--c-primary);color:#04231A;border-color:var(--c-primary);
  box-shadow:0 10px 24px -14px rgba(0,192,139,.9);
}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#EAFFF8;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--c-ink);border-color:var(--c-line)}
.btn-ghost:hover{background:#fff;border-color:var(--c-primary);color:var(--c-primary-deep);transform:translateY(-2px)}
.btn-dark{background:var(--c-ink);color:#E7EDE9;border-color:var(--c-ink)}
.btn-dark:hover{background:var(--c-ink-2);transform:translateY(-2px)}
.btn-on-dark{background:var(--c-primary);color:#04231A;border-color:var(--c-primary)}
.btn-on-dark:hover{background:#00D89C;transform:translateY(-2px)}
.btn-outline-light-soft{background:transparent;color:#E7EDE9;border-color:rgba(231,237,233,.28)}
.btn-outline-light-soft:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}
.btn-lg{padding:16px 30px;font-size:16px}
.btn-block{width:100%;justify-content:center}

/* ---------- Pills & badges ---------- */
.pill{
  display:inline-flex;align-items:center;gap:7px;
  border-radius:999px;
  padding:6px 14px;
  font-size:13px;font-weight:600;
  background:rgba(0,192,139,.1);
  color:var(--c-primary-deep);
  border:1px solid rgba(0,192,139,.22);
}
.pill i{font-size:11px}
.pill-soft{background:#F0F3EF;color:var(--c-muted);border-color:var(--c-line)}
.pill-accent{background:var(--c-accent-soft);color:#C2391A;border-color:rgba(255,90,54,.25)}

/* ---------- Hero ---------- */
.hero-section{padding:44px 0 40px}
.hero-grid{
  display:grid;grid-template-columns:1.04fr .96fr;
  gap:56px;align-items:center;
  min-height:620px;
}
.hero-copy h1{
  font-size:clamp(34px,4.4vw,58px);
  font-weight:800;line-height:1.08;letter-spacing:-.02em;
  margin:20px 0 0;
}
.hero-sub{margin-top:22px;font-size:17px;color:var(--c-muted);max-width:560px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:36px;margin-top:44px;padding-top:28px;border-top:1px solid var(--c-line)}
.hero-metric b{display:block;font-size:32px;font-weight:800;color:var(--c-ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.hero-metric span{font-size:13px;color:var(--c-muted)}
.hero-visual{position:relative;border-radius:var(--r-panel);overflow:hidden;min-height:520px;box-shadow:var(--sh-3)}
.hero-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(170deg,rgba(14,21,18,.12) 0%,rgba(14,21,18,.55) 55%,rgba(14,21,18,.86) 100%);
}
.hero-float-card{
  position:absolute;left:24px;bottom:24px;z-index:2;
  background:rgba(255,255,255,.96);
  border-radius:var(--r-card);
  padding:16px 20px;
  box-shadow:var(--sh-2);
  border:1px solid rgba(255,255,255,.6);
  min-width:200px;
}
.hero-float-card b{display:block;font-size:26px;font-weight:800;color:var(--c-primary-deep);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-float-card span{font-size:13px;color:var(--c-muted)}
.hero-tag-corner{
  position:absolute;right:24px;top:24px;z-index:2;
  background:rgba(14,21,18,.7);color:#E7EDE9;
  border-radius:999px;padding:7px 15px;font-size:13px;font-weight:600;
  border:1px solid rgba(231,237,233,.2);
}

/* ---------- Metric strip ---------- */
.metric-strip{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:8px;
  display:grid;grid-template-columns:repeat(4,1fr);
  box-shadow:var(--sh-1);
}
.metric-cell{padding:22px 24px;border-right:1px solid var(--c-line)}
.metric-cell:last-child{border-right:0}
.metric-cell b{display:block;font-size:30px;font-weight:800;color:var(--c-ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.metric-cell span{font-size:13px;color:var(--c-muted);display:block;margin-top:4px}

/* ---------- Scenario cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scene-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,192,139,.4)}
.scene-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#EEF1EC}
.scene-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.scene-card:hover .thumb img{transform:scale(1.03)}
.scene-card .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.scene-card h3{font-size:20px;font-weight:600}
.scene-card p{font-size:15px;color:var(--c-muted)}
.scene-card .link{margin-top:auto;font-size:14px;font-weight:600;color:var(--c-primary-deep);display:inline-flex;align-items:center;gap:8px}
.scene-card:hover .link i{transform:translateX(3px)}
.scene-card .link i{transition:transform .16s ease-out}

/* ---------- Tier ladder ---------- */
.tier-list{display:grid;gap:18px}
.tier-item{
  position:relative;
  display:grid;grid-template-columns:104px 1fr 220px;gap:28px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 28px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.tier-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,192,139,.4)}
.tier-item::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);opacity:0;transition:opacity .2s ease-out;
}
.tier-item:hover::before{opacity:1}
.tier-no{
  font-size:40px;font-weight:800;line-height:1;
  color:rgba(0,192,139,.32);font-variant-numeric:tabular-nums;letter-spacing:-.03em;
}
.tier-main h3{font-size:20px;font-weight:600;margin-bottom:6px}
.tier-main .threshold{font-size:13px;color:var(--c-muted);margin-bottom:14px}
.tier-benefits{display:flex;flex-wrap:wrap;gap:10px 22px}
.tier-benefits li{font-size:14px;color:var(--c-muted);display:flex;align-items:center;gap:8px}
.tier-benefits li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);flex:0 0 auto}
.tier-action{text-align:right}

/* ---------- Plan compare ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.plan-col{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-panel);
  padding:30px 28px;position:relative;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.plan-col:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.plan-col.featured{background:var(--c-ink);border-color:var(--c-ink);color:#E7EDE9;box-shadow:var(--sh-3)}
.plan-col.featured h3,.plan-col.featured .plan-price b{color:#FFFFFF}
.plan-badge{
  position:absolute;top:-13px;left:28px;
  background:var(--c-primary);color:#04231A;
  border-radius:999px;padding:5px 14px;font-size:12px;font-weight:700;letter-spacing:.04em;
}
.plan-col h3{font-size:22px;font-weight:700}
.plan-col .plan-desc{font-size:14px;color:var(--c-muted);margin-top:10px;min-height:44px}
.plan-col.featured .plan-desc{color:rgba(231,237,233,.72)}
.plan-price{margin:22px 0 6px;display:flex;align-items:baseline;gap:8px}
.plan-price b{font-size:34px;font-weight:800;color:var(--c-ink);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.plan-price span{font-size:14px;color:var(--c-muted)}
.plan-col.featured .plan-price span{color:rgba(231,237,233,.7)}
.plan-note{font-size:13px;color:var(--c-muted);margin-bottom:18px}
.plan-col.featured .plan-note{color:rgba(231,237,233,.6)}
.plan-row{
  display:flex;justify-content:space-between;gap:16px;
  padding:12px 0;font-size:14px;border-bottom:1px solid var(--c-line);
}
.plan-row:last-of-type{border-bottom:0}
.plan-row span:first-child{color:var(--c-muted)}
.plan-row span:last-child{font-weight:600;text-align:right}
.plan-col.featured .plan-row{border-bottom-color:rgba(231,237,233,.12)}
.plan-col.featured .plan-row span:first-child{color:rgba(231,237,233,.66)}
.plan-col.featured .plan-row span:last-child{color:#E7EDE9}
.plan-cta{margin-top:24px}

/* ---------- Dark panel: limited entry + form ---------- */
.dark-panel{
  position:relative;overflow:hidden;
  background:var(--c-ink);border-radius:var(--r-panel);
  padding:52px;color:#E7EDE9;
  box-shadow:var(--sh-3);
}
.dark-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(0,192,139,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(0,192,139,.07) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 20% 10%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 20% 10%,#000 0%,transparent 72%);
}
.dark-split{position:relative;z-index:2;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:start}
.dark-split h2{color:#FFFFFF;font-size:clamp(26px,3vw,34px);font-weight:700;line-height:1.24}
.dark-split .lead{margin-top:16px;color:rgba(231,237,233,.72);max-width:520px}
.dark-points{margin-top:28px;display:grid;gap:14px}
.dark-points li{display:flex;gap:12px;font-size:15px;color:rgba(231,237,233,.86)}
.dark-points li i{color:var(--c-primary);margin-top:6px;font-size:13px}
.heat-block{margin-top:32px;padding:20px 22px;border:1px solid rgba(231,237,233,.14);border-radius:var(--r-card);background:rgba(255,255,255,.03)}
.heat-top{display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:14px}
.heat-top b{font-variant-numeric:tabular-nums;color:#FFFFFF}
.heat-bar{height:8px;border-radius:999px;background:rgba(231,237,233,.14);margin-top:14px;overflow:hidden}
.heat-bar span{display:block;height:100%;width:78%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),#4CE0B6)}
.heat-meta{margin-top:12px;font-size:13px;color:rgba(231,237,233,.6)}
.form-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(231,237,233,.14);
  border-radius:var(--r-panel);
  padding:30px;
}
.form-card h3{color:#FFFFFF;font-size:20px;font-weight:600}
.form-card .form-hint{font-size:14px;color:rgba(231,237,233,.66);margin-top:8px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-top:18px;display:flex;flex-direction:column;gap:8px}
.field label{font-size:13px;font-weight:600;color:rgba(231,237,233,.8)}
.field input,.field select,.field textarea{
  width:100%;border-radius:12px;
  border:1px solid rgba(231,237,233,.2);
  background:rgba(255,255,255,.06);
  color:#FFFFFF;font-size:15px;font-family:inherit;
  padding:12px 14px;line-height:1.6;
  transition:border-color .16s ease-out,box-shadow .16s ease-out,background .16s ease-out;
}
.field textarea{resize:vertical;min-height:96px}
.field input::placeholder,.field textarea::placeholder{color:rgba(231,237,233,.42)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(0,192,139,.14);
  background:rgba(255,255,255,.1);
}
.field select option{color:#1A211D}
.field .err{font-size:13px;color:#FF8A6C;display:none}
.field.has-error input,.field.has-error select{border-color:var(--c-accent)}
.field.has-error .err{display:block}
.form-actions{margin-top:24px;display:flex;justify-content:flex-end}
.form-legal{margin-top:14px;font-size:12px;color:rgba(231,237,233,.5);text-align:right}

/* ---------- CMS list ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.info-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,192,139,.4)}
.info-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:#EEF1EC;position:relative}
.info-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.info-card:hover .info-cover img{transform:scale(1.03)}
.info-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.info-body h3{font-size:19px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.info-body h3 a:hover{color:var(--c-primary-deep)}
.info-body p{font-size:14px;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.info-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  font-size:13px;color:var(--c-muted);font-variant-numeric:tabular-nums;
}
.info-more{color:var(--c-primary-deep);font-weight:600;display:inline-flex;align-items:center;gap:8px}
.info-more i{transition:transform .16s ease-out}
.info-card:hover .info-more i{transform:translateX(3px)}
.empty-state{
  text-align:center;padding:56px 24px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
}
.empty-state i{font-size:26px;color:var(--c-muted);opacity:.6}
.empty-state p{margin-top:14px;color:var(--c-muted);font-size:15px}
.empty-state a{margin-top:8px;display:inline-flex;color:var(--c-primary-deep);font-weight:600;font-size:14px}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start}
.faq-side h2{font-size:clamp(26px,3vw,34px);font-weight:700;line-height:1.24}
.faq-side p{margin-top:16px;color:var(--c-muted)}
.faq-side .btn{margin-top:26px}
.accordion-item{border:0;border-bottom:1px solid var(--c-line);background:transparent}
.accordion-item:first-child{border-top:1px solid var(--c-line)}
.accordion-button{
  background:transparent;border:0;box-shadow:none;
  padding:22px 44px 22px 0;font-size:16px;font-weight:600;color:var(--c-ink);
  line-height:1.6;
}
.accordion-button:not(.collapsed){color:var(--c-primary-deep);background:transparent;box-shadow:none}
.accordion-button:focus{box-shadow:none;outline:none}
.accordion-button:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.accordion-button::after{
  content:"+";font-size:22px;font-weight:400;line-height:1;
  background-image:none;color:var(--c-primary);
  width:auto;height:auto;transform:none;
  display:grid;place-items:center;
  position:absolute;right:0;top:50%;margin:0;translate:0 -50%;
}
.accordion-button:not(.collapsed)::after{content:"–";color:var(--c-primary-deep)}
.accordion-body{padding:0 44px 24px 0;font-size:15px;color:var(--c-muted);line-height:1.85}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-ink);color:#C9D3CD;margin-top:96px;padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.35fr .8fr .9fr 1.05fr;gap:44px}
.footer-brand .brand-text strong{color:#FFFFFF}
.footer-brand .brand-text small{color:rgba(231,237,233,.6)}
.footer-brand p{margin-top:20px;font-size:14px;color:rgba(231,237,233,.66);max-width:340px}
.footer-col h4{font-size:15px;font-weight:700;color:#FFFFFF;margin-bottom:18px;letter-spacing:.02em}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:rgba(231,237,233,.72)}
.footer-col a:hover{color:var(--c-primary)}
.footer-contact li{font-size:14px;color:rgba(231,237,233,.72);display:flex;gap:10px;align-items:flex-start}
.footer-contact li i{color:var(--c-primary);margin-top:6px;font-size:13px}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(231,237,233,.12);
  padding:24px 0 30px;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(231,237,233,.55);
}
.footer-bottom .disclaimer{max-width:640px}

/* ---------- Motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease-out,transform .42s ease-out}
.reveal.is-in{opacity:1;transform:none}

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

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .hero-grid{gap:40px}
  .tier-item{grid-template-columns:80px 1fr 190px;gap:20px}
}
@media (max-width:992px){
  .section{padding:72px 0}
  .hero-section{padding:32px 0 24px}
  .hero-grid{grid-template-columns:1fr;min-height:auto;gap:36px}
  .hero-visual{min-height:380px}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .metric-cell:nth-child(2){border-right:0}
  .metric-cell:nth-child(1),.metric-cell:nth-child(2){border-bottom:1px solid var(--c-line)}
  .grid-3,.card-grid{grid-template-columns:repeat(2,1fr)}
  .plan-grid{grid-template-columns:1fr}
  .plan-col.featured{order:-1}
  .dark-panel{padding:36px}
  .dark-split{grid-template-columns:1fr;gap:36px}
  .faq-layout{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .nav-panel{scroll-snap-type:x mandatory}
  .header-bar{flex-wrap:nowrap}
}
@media (max-width:768px){
  .container{padding-left:18px;padding-right:18px}
  .section{padding:56px 0}
  .brand-text small{display:none}
  .nav-panel{margin-left:0;order:3;width:100%;border-radius:14px}
  .header-bar{flex-wrap:wrap;gap:14px}
  .header-cta{margin-left:auto}
  .tier-item{grid-template-columns:1fr;gap:16px;padding:22px}
  .tier-no{font-size:32px}
  .tier-action{text-align:left}
  .tier-item::before{top:10px;bottom:10px}
  .grid-3,.grid-2,.card-grid,.form-row{grid-template-columns:1fr}
  .metric-strip{grid-template-columns:1fr}
  .metric-cell{border-right:0;border-bottom:1px solid var(--c-line)}
  .metric-cell:last-child{border-bottom:0}
  .hero-metrics{gap:24px}
  .hero-metric b{font-size:26px}
  .dark-panel{padding:26px 22px}
  .form-card{padding:22px}
  .form-actions{justify-content:stretch}
  .form-actions .btn{width:100%;justify-content:center}
  .form-legal{text-align:left}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .hero-float-card{left:16px;bottom:16px;padding:14px 16px}
}
@media (max-width:520px){
  .brand-text strong{font-size:15px}
  .hero-actions .btn{width:100%;justify-content:center}
  .accordion-button{font-size:15px;padding-right:36px}
  .accordion-body{padding-right:0}
  .header-cta span{display:none}
  .header-cta{padding:11px 14px}
}

/* roulang page: article */
:root{
  --c-ink:#0E1512;
  --c-ink-2:#1C2621;
  --c-bg:#F4F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E2E6E1;
  --c-text:#1A211D;
  --c-muted:#667069;
  --c-primary:#00C08B;
  --c-primary-deep:#046B4F;
  --c-accent:#FF5A36;
  --c-accent-soft:#FFEDE7;
  --r-btn:12px;
  --r-card:16px;
  --r-panel:20px;
  --sh-1:0 1px 2px rgba(14,21,18,.06);
  --sh-2:0 14px 32px -14px rgba(14,21,18,.22);
  --sh-3:0 24px 60px -30px rgba(14,21,18,.45);
  --bs-body-bg:#F4F5F2;
  --bs-body-color:#1A211D;
  --bs-border-color:#E2E6E1;
  --bs-border-radius:16px;
  --bs-primary-rgb:0,192,139;
  --bs-link-color:#046B4F;
  --bs-link-hover-color:#00C08B;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary-deep);text-decoration:none;transition:color .14s ease-out}
a:hover{color:var(--c-primary)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-0.01em;color:var(--c-text)}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

a:focus-visible,button:focus-visible,.btn:focus-visible,.nav-item:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  padding:16px 0;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .2s ease,box-shadow .2s ease,padding .2s ease,border-color .2s ease;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
  padding:10px 0;
}
.header-bar{display:flex;align-items:center;gap:20px}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;border-radius:14px;
  background:linear-gradient(140deg,var(--c-ink) 0%,var(--c-ink-2) 100%);
  color:var(--c-primary);display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:.04em;
  box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:800;color:var(--c-text);letter-spacing:-0.01em}
.brand-text small{font-size:12px;color:var(--c-muted);font-weight:500}
.nav-panel{
  display:flex;align-items:center;gap:6px;
  margin:0 auto;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:18px;
  padding:6px;
  box-shadow:var(--sh-1);
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
  scroll-snap-type:x proximity;
}
.nav-panel::-webkit-scrollbar{display:none}
.nav-item{
  position:relative;
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:12px;
  color:var(--c-muted);font-size:14px;font-weight:500;
  white-space:nowrap;scroll-snap-align:start;
  transition:background .14s ease-out,color .14s ease-out;
}
.nav-item i{font-size:13px;opacity:.85}
.nav-item:hover{background:#F0F3EF;color:var(--c-text)}
.nav-item.active{background:rgba(0,192,139,.12);color:var(--c-primary-deep);font-weight:700}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:18px;border-radius:3px;background:var(--c-primary);
}
.header-cta{flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);
  font-weight:600;font-size:15px;
  padding:12px 22px;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .14s ease-out,color .14s ease-out,transform .14s ease-out,box-shadow .14s ease-out,border-color .14s ease-out;
}
.btn i{transition:transform .14s ease-out}
.btn:hover i.fa-arrow-right,.btn:hover i.fa-chevron-right{transform:translateX(3px)}
.btn:active{transform:translateY(0) scale(.985)}
.btn-primary{background:var(--c-primary);border-color:var(--c-primary);color:#06231B}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-outline{background:transparent;border-color:var(--c-line);color:var(--c-text)}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary-deep);background:rgba(0,192,139,.07);transform:translateY(-2px)}
.btn-ghost-light{background:rgba(255,255,255,.10);border-color:rgba(231,237,233,.32);color:#E7EDE9}
.btn-ghost-light:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px)}
.btn-block{width:100%}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  padding:52px 0 60px;
  background-image:linear-gradient(115deg,rgba(14,21,18,.94) 0%,rgba(14,21,18,.82) 52%,rgba(4,107,79,.72) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  color:#E7EDE9;
  border-radius:0 0 var(--r-panel) var(--r-panel);
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(0,192,139,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(0,192,139,.06) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb-bar{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13px;color:rgba(231,237,233,.66);margin-bottom:22px;
}
.breadcrumb-bar a{color:rgba(231,237,233,.82)}
.breadcrumb-bar a:hover{color:var(--c-primary)}
.breadcrumb-bar .sep{opacity:.45}
.breadcrumb-bar .current{color:#E7EDE9;font-weight:600}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:999px;
  background:rgba(0,192,139,.16);
  border:1px solid rgba(0,192,139,.36);
  color:#7BEBC8;font-size:12.5px;font-weight:600;letter-spacing:.02em;
  margin-bottom:20px;
}
.article-hero h1{
  color:#fff;
  font-size:clamp(28px,4.2vw,50px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-0.02em;
  max-width:940px;
}
.meta-bar{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;align-items:center}
.meta-item{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(231,237,233,.72)}
.meta-item i{color:var(--c-primary);font-size:13px}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  height:28px;padding:0 13px;border-radius:999px;
  background:rgba(255,90,54,.16);
  border:1px solid rgba(255,90,54,.34);
  color:#FFB7A4;font-size:12.5px;font-weight:600;
}

/* ---------- layout ---------- */
.page-body{padding:48px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 312px;gap:44px;align-items:start}
.article-shell{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-panel);
  padding:42px 46px;
  box-shadow:var(--sh-1);
}
.article-cover{
  margin:0 0 32px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);
}
.article-cover img{width:100%;aspect-ratio:16/7;object-fit:cover}

/* ---------- article typography ---------- */
.article-body{font-size:16.5px;line-height:1.92;color:#39423C;overflow-wrap:break-word}
.article-body p{color:var(--c-muted);margin:0 0 1.2em}
.article-body strong{color:var(--c-text);font-weight:700}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.4vw,28px);
  font-weight:700;color:var(--c-text);
  line-height:1.4;
  margin:44px 0 18px;
  padding:20px 0 0 16px;
  border-top:1px solid var(--c-line);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:24px;
  width:4px;height:19px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:18.5px;font-weight:600;color:var(--c-text);margin:30px 0 12px}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:4px}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px;color:var(--c-muted)}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;
  width:6px;height:6px;border-radius:2px;background:var(--c-primary);
}
.article-body ol{counter-reset:li}
.article-body ol li::before{
  counter-increment:li;content:counter(li);
  position:absolute;left:0;top:.15em;
  color:var(--c-primary-deep);font-weight:700;font-size:14px;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  border-left:3px solid var(--c-primary);
  background:#F7F8F5;border-radius:0 var(--r-btn) var(--r-btn) 0;
  color:var(--c-muted);font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-btn);margin:24px 0;border:1px solid var(--c-line)}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0;display:block;overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:11px 14px;text-align:left;color:var(--c-muted);white-space:nowrap}
.article-body th{background:#F7F8F5;color:var(--c-text);font-weight:600}
.article-body code{background:#F0F3EF;border-radius:6px;padding:2px 6px;font-size:14px;color:var(--c-primary-deep)}
.article-body pre{background:var(--c-ink);color:#DCE5E0;padding:18px;border-radius:var(--r-btn);overflow-x:auto;font-size:14px;line-height:1.7}

/* ---------- soft tip ---------- */
.soft-tip{
  display:flex;align-items:flex-start;gap:14px;
  margin-top:36px;padding:18px 20px;
  background:var(--c-accent-soft);
  border:1px solid #FFD8CC;
  border-radius:var(--r-card);
}
.soft-tip i{color:var(--c-accent);font-size:16px;margin-top:4px}
.soft-tip p{margin:0;font-size:14.5px;color:#8A4632;line-height:1.75}
.soft-tip a{color:var(--c-accent);font-weight:700}

/* ---------- aside ---------- */
.article-aside{display:flex;flex-direction:column;gap:20px;position:sticky;top:104px}
.aside-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-panel);padding:24px;box-shadow:var(--sh-1)}
.aside-card h3{font-size:16px;font-weight:700;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--c-line)}
.aside-links li+li{margin-top:6px}
.aside-links a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:var(--r-btn);
  font-size:14px;color:var(--c-muted);font-weight:500;
  transition:background .14s ease-out,color .14s ease-out;
}
.aside-links a i{color:var(--c-primary);font-size:13px;width:16px;text-align:center}
.aside-links a:hover{background:#F0F3EF;color:var(--c-text)}
.aside-card-ink{background:var(--c-ink);border-color:var(--c-ink-2);color:#E7EDE9;box-shadow:var(--sh-3)}
.aside-card-ink h3{color:#fff;border-bottom-color:rgba(231,237,233,.14)}
.aside-card-ink p{color:rgba(231,237,233,.72);font-size:14.5px}
.aside-facts{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}
.aside-fact{display:flex;align-items:baseline;gap:10px}
.aside-fact strong{font-size:22px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums}
.aside-fact span{font-size:13px;color:rgba(231,237,233,.68)}

/* ---------- related ---------- */
.related-block{margin-top:64px}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.block-head h2{font-size:clamp(20px,2.4vw,26px);font-weight:700}
.block-head p{margin:6px 0 0;font-size:14px;color:var(--c-muted)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.related-card{
  display:flex;flex-direction:column;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  height:100%;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,192,139,.4)}
.related-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:#E8ECE7}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease-out}
.related-card:hover .related-thumb img{transform:scale(1.03)}
.related-thumb .tag{
  position:absolute;left:12px;top:12px;
  height:26px;padding:0 12px;border-radius:999px;
  background:rgba(14,21,18,.78);color:#9CEFD4;
  font-size:12px;font-weight:600;display:inline-flex;align-items:center;gap:6px;
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.related-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-body h3{font-size:16.5px;font-weight:700;line-height:1.5}
.related-body p{font-size:14px;color:var(--c-muted);margin:0;flex:1}
.related-more{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--c-primary-deep)}
.related-card:hover .related-more i{transform:translateX(3px)}
.related-more i{transition:transform .14s ease-out}

.back-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:40px;padding-top:32px;border-top:1px solid var(--c-line)}

/* ---------- empty ---------- */
.empty-state{
  background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-panel);
  padding:76px 32px;text-align:center;box-shadow:var(--sh-1);
}
.empty-state i{font-size:34px;color:var(--c-primary);margin-bottom:18px}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:12px}
.empty-state p{color:var(--c-muted);max-width:520px;margin:0 auto 24px;font-size:15px}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:#E7EDE9;margin-top:80px;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:44px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:rgba(231,237,233,.6)}
.footer-brand .brand-mark{background:rgba(0,192,139,.16);border:1px solid rgba(0,192,139,.34);color:var(--c-primary)}
.footer-brand p{margin-top:20px;color:rgba(231,237,233,.66);font-size:14.5px;line-height:1.85;max-width:360px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col ul li+li{margin-top:10px}
.footer-col ul a{color:rgba(231,237,233,.7);font-size:14.5px}
.footer-col ul a:hover{color:var(--c-primary)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;color:rgba(231,237,233,.7);font-size:14.5px}
.footer-contact i{color:var(--c-primary);margin-top:6px;font-size:13px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:center;
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(231,237,233,.12);
  font-size:13px;color:rgba(231,237,233,.55);
}
.footer-bottom .disclaimer{color:rgba(231,237,233,.42)}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease-out,transform .42s ease-out}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:32px}
  .related-grid{gap:20px}
}
@media (max-width:991.98px){
  .header-bar{flex-wrap:wrap;gap:12px}
  .nav-panel{order:3;flex:1 0 100%;margin:8px 0 0}
  .header-cta{margin-left:auto}
  .article-layout{grid-template-columns:1fr;gap:0}
  .article-aside{display:none}
  .article-shell{padding:32px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767.98px){
  .site-header{padding:12px 0}
  .brand-text small{display:none}
  .article-hero{padding:36px 0 44px;border-radius:0 0 16px 16px}
  .article-shell{padding:26px 20px;border-radius:16px}
  .page-body{padding:34px 0 56px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .site-footer{padding:56px 0 24px;margin-top:56px}
  .back-row .btn{width:100%}
  .block-head{flex-direction:column;align-items:flex-start}
}
@media (max-width:575.98px){
  .container{padding:0 18px}
  .article-body{font-size:16px;line-height:1.85}
  .meta-bar{gap:8px 16px}
  .empty-state{padding:56px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1!important;transform:none!important}
}

/* roulang page: category1 */
:root{
  --c-ink:#0E1512;
  --c-ink-2:#1C2621;
  --c-bg:#F4F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E2E6E1;
  --c-text:#1A211D;
  --c-muted:#667069;
  --c-primary:#00C08B;
  --c-primary-deep:#046B4F;
  --c-accent:#FF5A36;
  --c-accent-soft:#FFEDE7;

  --r-btn:12px;
  --r-card:16px;
  --r-panel:20px;

  --sh-1:0 1px 2px rgba(14,21,18,.06);
  --sh-2:0 14px 32px -14px rgba(14,21,18,.22);
  --sh-3:0 24px 60px -30px rgba(14,21,18,.45);

  --space-section:96px;
  --space-section-m:56px;

  --bs-body-bg:var(--c-bg);
  --bs-body-color:var(--c-text);
  --bs-border-color:var(--c-line);
  --bs-border-radius:14px;
  --bs-border-radius-lg:var(--r-card);
  --bs-primary-rgb:0,192,139;
  --bs-link-color:var(--c-primary-deep);
  --bs-link-hover-color:var(--c-primary-deep);
  --bs-font-sans-serif:"Inter","Manrope","PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--c-primary-deep);text-decoration:none;transition:color .14s ease-out}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums}

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

/* ============ 头部与卡片化导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(244,245,242,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
}
.header-bar{
  display:flex;
  align-items:center;
  gap:20px;
  padding:14px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--c-text);
}
.brand:hover{color:var(--c-text)}
.brand-mark{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--c-ink);
  color:var(--c-primary);
  font-weight:800;
  font-size:15px;
  letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:-.01em}
.brand-text small{font-size:12px;color:var(--c-muted)}

.nav-panel{
  display:flex;
  align-items:center;
  gap:4px;
  padding:6px;
  margin-left:auto;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:18px;
  box-shadow:var(--sh-1);
}
.nav-item{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 14px;
  border-radius:12px;
  font-size:14px;
  font-weight:600;
  color:var(--c-text);
  white-space:nowrap;
  transition:background .14s ease-out,color .14s ease-out;
}
.nav-item i{font-size:13px;color:var(--c-muted);transition:color .14s ease-out}
.nav-item:hover{background:#F0F3EF;color:var(--c-text)}
.nav-item:hover i{color:var(--c-primary-deep)}
.nav-item.active{
  background:rgba(0,192,139,.12);
  color:var(--c-primary-deep);
}
.nav-item.active i{color:var(--c-primary-deep)}
.nav-item.active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:999px;
  background:var(--c-primary);
}
.header-cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  font-size:14px;
  font-weight:600;
}

/* ============ 按钮系统 ============ */
.btn{
  --bs-btn-border-radius:var(--r-btn);
  border-radius:var(--r-btn);
  font-weight:600;
  letter-spacing:0;
  transition:background-color .14s ease-out,color .14s ease-out,transform .14s ease-out,box-shadow .14s ease-out,border-color .14s ease-out;
}
.btn:active{transform:translateY(0) scale(.985)}
.btn-primary{
  --bs-btn-bg:var(--c-primary);
  --bs-btn-border-color:var(--c-primary);
  --bs-btn-hover-bg:var(--c-primary-deep);
  --bs-btn-hover-border-color:var(--c-primary-deep);
  --bs-btn-active-bg:var(--c-primary-deep);
  --bs-btn-active-border-color:var(--c-primary-deep);
  --bs-btn-color:#06231A;
  --bs-btn-hover-color:#EAFBF4;
  --bs-btn-active-color:#EAFBF4;
  --bs-btn-focus-shadow-rgb:0,192,139;
  box-shadow:0 10px 24px -14px rgba(0,192,139,.75);
}
.btn-primary:hover{transform:translateY(-2px)}
.btn-outline-ink{
  background:transparent;
  border:1px solid var(--c-line);
  color:var(--c-text);
  border-radius:var(--r-btn);
}
.btn-outline-ink:hover{
  border-color:var(--c-primary);
  color:var(--c-primary-deep);
  background:rgba(0,192,139,.07);
  transform:translateY(-2px);
}
.btn-ghost-light{
  background:transparent;
  border:1px solid rgba(231,237,233,.28);
  color:#E7EDE9;
  border-radius:var(--r-btn);
}
.btn-ghost-light:hover{
  border-color:var(--c-primary);
  color:var(--c-primary);
  background:rgba(0,192,139,.08);
  transform:translateY(-2px);
}
.btn .fa-arrow-right{transition:transform .14s ease-out}
.btn:hover .fa-arrow-right{transform:translateX(3px)}

/* ============ 页面横幅 ============ */
.page-banner{
  position:relative;
  margin-top:24px;
  border-radius:var(--r-panel);
  overflow:hidden;
  background-image:linear-gradient(100deg,rgba(14,21,18,.94) 0%,rgba(14,21,18,.80) 46%,rgba(14,21,18,.52) 100%),
                   url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  box-shadow:var(--sh-3);
}
.page-banner-inner{
  position:relative;
  padding:44px 44px 46px;
  color:#E7EDE9;
}
.breadcrumb-line{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:rgba(231,237,233,.68);
  margin-bottom:22px;
}
.breadcrumb-line a{color:rgba(231,237,233,.82)}
.breadcrumb-line a:hover{color:var(--c-primary)}
.breadcrumb-line span.sep{color:rgba(231,237,233,.35)}
.banner-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:rgba(0,192,139,.14);
  border:1px solid rgba(0,192,139,.42);
  color:var(--c-primary);
  font-size:13px;
  font-weight:600;
  margin-bottom:20px;
}
.page-banner h1{
  max-width:760px;
  font-size:clamp(30px,4.1vw,50px);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.02em;
  color:#FFFFFF;
}
.banner-sub{
  max-width:640px;
  margin-top:18px;
  font-size:16px;
  line-height:1.8;
  color:rgba(231,237,233,.82);
}
.banner-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.banner-metrics{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  margin-top:40px;
  background:rgba(231,237,233,.16);
  border:1px solid rgba(231,237,233,.16);
  border-radius:var(--r-card);
  overflow:hidden;
}
.banner-metric{
  background:rgba(14,21,18,.42);
  padding:18px 20px;
}
.banner-metric b{
  display:block;
  font-size:26px;
  font-weight:800;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.banner-metric span{
  display:block;
  margin-top:4px;
  font-size:13px;
  color:rgba(231,237,233,.72);
}

/* ============ 通用板块 ============ */
.section{padding:var(--space-section) 0}
.section-sm{padding:64px 0}
.section-head{max-width:720px;margin-bottom:34px}
.section-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--c-primary-deep);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-label::before{
  content:"";
  width:18px;height:2px;
  background:var(--c-primary);
  border-radius:999px;
}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);
  font-weight:700;
  line-height:1.24;
  letter-spacing:-.015em;
}
.section-head p{
  margin-top:14px;
  color:var(--c-muted);
  line-height:1.85;
}

/* ============ 双栏交替图文 ============ */
.zigzag{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
  align-items:center;
  padding:36px 0;
  border-top:1px solid var(--c-line);
}
.zigzag:first-of-type{border-top:0;padding-top:0}
.zigzag.reverse .zigzag-media{order:2}
.zigzag.reverse .zigzag-body{order:1}
.zigzag-media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  aspect-ratio:16/11;
  background:var(--c-ink);
}
.zigzag-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s ease-out;
}
.zigzag-media:hover img{transform:scale(1.03)}
.zigzag-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(14,21,18,0) 40%,rgba(14,21,18,.55) 100%);
}
.zigzag-media .media-note{
  position:absolute;
  left:18px;bottom:16px;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border-radius:999px;
  background:rgba(14,21,18,.66);
  border:1px solid rgba(0,192,139,.4);
  color:var(--c-primary);
  font-size:12px;
  font-weight:600;
}
.step-index{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  margin-bottom:12px;
}
.step-index b{
  font-size:34px;
  font-weight:800;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
  line-height:1;
}
.step-index span{
  font-size:13px;
  font-weight:600;
  color:var(--c-muted);
  letter-spacing:.06em;
}
.zigzag-body h3{
  font-size:clamp(20px,2vw,24px);
  font-weight:600;
  line-height:1.35;
  margin-bottom:14px;
}
.zigzag-body p{color:var(--c-muted)}
.zigzag-body p + p{margin-top:12px}
.mini-list{
  margin-top:20px;
  display:grid;
  gap:10px;
}
.mini-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:15px;
  color:var(--c-text);
}
.mini-list li i{
  color:var(--c-primary);
  font-size:13px;
  margin-top:7px;
}

/* ============ 要点清单 ============ */
.checklist-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-panel);
  padding:36px;
  box-shadow:var(--sh-1);
}
.checklist{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;
  background:var(--c-line);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.check-item{
  display:flex;
  gap:16px;
  background:var(--c-surface);
  padding:22px 24px;
  transition:background .14s ease-out;
}
.check-item:hover{background:#F7F9F6}
.check-num{
  flex:0 0 auto;
  width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:rgba(0,192,139,.12);
  color:var(--c-primary-deep);
  font-size:13px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
}
.check-item h4{
  font-size:16px;
  font-weight:600;
  margin-bottom:6px;
}
.check-item p{font-size:14px;color:var(--c-muted);line-height:1.75}

/* ============ FAQ ============ */
.faq-layout{
  display:grid;
  grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);
  gap:56px;
  align-items:start;
}
.faq-aside h2{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.26;
  font-weight:700;
}
.faq-aside p{margin-top:14px;color:var(--c-muted)}
.faq-aside .aside-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:22px;
  font-weight:600;
  font-size:15px;
}
.accordion{
  --bs-accordion-border-width:0;
  --bs-accordion-bg:transparent;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-border-radius:0;
}
.faq .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--c-line);
}
.faq .accordion-item:last-child{border-bottom:1px solid var(--c-line)}
.faq .accordion-button{
  background:transparent;
  padding:20px 44px 20px 0;
  font-size:16px;
  font-weight:600;
  color:var(--c-text);
  box-shadow:none;
  line-height:1.6;
}
.faq .accordion-button:not(.collapsed){color:var(--c-primary-deep)}
.faq .accordion-button::after{display:none}
.faq .accordion-button::before{
  content:"+";
  position:absolute;
  right:4px;
  top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:500;
  color:var(--c-primary);
  line-height:1;
}
.faq .accordion-button:not(.collapsed)::before{content:"−"}
.faq .accordion-body{
  padding:0 44px 22px 0;
  color:var(--c-muted);
  font-size:15px;
  line-height:1.85;
}

/* ============ 深色 CTA 与表单 ============ */
.cta-band{
  position:relative;
  background:var(--c-ink);
  border-radius:var(--r-panel);
  overflow:hidden;
  box-shadow:var(--sh-3);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(0,192,139,.16) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.7;
  pointer-events:none;
}
.cta-band-inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,460px);
  gap:48px;
  padding:48px;
}
.cta-band .cta-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--c-accent-soft);
  color:#B32F13;
  font-size:13px;
  font-weight:700;
  margin-bottom:18px;
}
.cta-band h2{
  color:#FFFFFF;
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.015em;
}
.cta-band .cta-desc{
  margin-top:16px;
  color:rgba(231,237,233,.78);
  max-width:520px;
}
.cta-points{
  margin-top:26px;
  display:grid;
  gap:12px;
}
.cta-points li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  color:#E7EDE9;
  font-size:15px;
}
.cta-points li i{color:var(--c-primary);margin-top:7px;font-size:13px}
.cta-progress{
  margin-top:28px;
  max-width:420px;
}
.cta-progress .bar{
  height:6px;
  border-radius:999px;
  background:rgba(231,237,233,.16);
  overflow:hidden;
}
.cta-progress .bar span{
  display:block;
  height:100%;
  width:62%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--c-primary),#5BE0B7);
  animation:breathe 3.6s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{width:58%}
  50%{width:68%}
}
.cta-progress .meta{
  display:flex;
  justify-content:space-between;
  margin-top:10px;
  font-size:13px;
  color:rgba(231,237,233,.66);
  font-variant-numeric:tabular-nums;
}

.form-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-2);
}
.form-card h3{font-size:19px;font-weight:700;margin-bottom:6px}
.form-card .form-hint{font-size:13px;color:var(--c-muted);margin-bottom:20px}
.form-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:600;color:var(--c-text)}
.field .req{color:var(--c-accent)}
.form-control,.form-select{
  border-radius:12px;
  border:1px solid var(--c-line);
  background:#FCFDFC;
  padding:11px 14px;
  font-size:14px;
  color:var(--c-text);
  transition:border-color .14s ease-out,box-shadow .14s ease-out,background .14s ease-out;
}
.form-control::placeholder{color:#9AA49D}
.form-control:focus,.form-select:focus{
  border-color:var(--c-primary);
  background:#FFFFFF;
  box-shadow:0 0 0 4px rgba(0,192,139,.12);
  outline:none;
}
.form-note{font-size:12px;color:var(--c-muted)}
.form-actions{
  display:flex;
  justify-content:flex-end;
  margin-top:20px;
}
.form-actions .btn{min-width:180px;height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:var(--space-section);
  background:var(--c-ink);
  color:#C9D4CE;
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.2fr);
  gap:44px;
}
.site-footer .brand-text strong{color:#FFFFFF}
.site-footer .brand-text small{color:rgba(201,212,206,.7)}
.site-footer .brand-mark{background:var(--c-ink-2);border:1px solid rgba(0,192,139,.35)}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  line-height:1.85;
  color:rgba(201,212,206,.78);
  max-width:340px;
}
.footer-col h4{
  color:#FFFFFF;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{
  color:rgba(201,212,206,.82);
  font-size:14px;
  transition:color .14s ease-out;
}
.footer-col a:hover{color:var(--c-primary)}
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14px;
  color:rgba(201,212,206,.8);
  line-height:1.7;
}
.footer-contact li i{color:var(--c-primary);margin-top:7px;font-size:13px}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(231,237,233,.12);
  font-size:13px;
  color:rgba(201,212,206,.62);
}
.footer-bottom .disclaimer{max-width:560px}

/* ============ 进场动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s ease-out,transform .42s ease-out;
}
.reveal.is-visible{opacity:1;transform:translateY(0)}
.reveal.d1{transition-delay:.06s}
.reveal.d2{transition-delay:.12s}
.reveal.d3{transition-delay:.18s}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover,.btn-outline-ink:hover,.btn-ghost-light:hover{transform:none}
  .zigzag-media:hover img{transform:none}
  .cta-progress .bar span{animation:none}
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .nav-item{padding:0 11px;font-size:13px}
  .nav-item span{display:inline}
  .header-cta span{display:none}
  .header-cta{width:44px;padding:0;justify-content:center}
}
@media (max-width:992px){
  :root{--space-section:72px}
  .header-bar{flex-wrap:wrap;gap:12px}
  .brand{order:1}
  .header-cta{order:3;margin-left:auto;width:auto;padding:0 16px}
  .header-cta span{display:inline}
  .nav-panel{
    order:2;
    width:100%;
    margin-left:0;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }
  .nav-panel::-webkit-scrollbar{display:none}
  .nav-item{scroll-snap-align:start}
  .zigzag{grid-template-columns:1fr;gap:28px}
  .zigzag.reverse .zigzag-media{order:0}
  .zigzag.reverse .zigzag-body{order:0}
  .faq-layout{grid-template-columns:1fr;gap:30px}
  .cta-band-inner{grid-template-columns:1fr;gap:34px;padding:36px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
}
@media (max-width:768px){
  :root{--space-section:56px}
  .container{padding:0 18px}
  .page-banner{margin-top:16px}
  .page-banner-inner{padding:30px 22px 32px}
  .banner-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .checklist{grid-template-columns:1fr}
  .checklist-wrap{padding:22px}
  .form-grid{grid-template-columns:1fr}
  .form-actions{justify-content:stretch}
  .form-actions .btn{width:100%}
  .section-sm{padding:44px 0}
}
@media (max-width:520px){
  .brand-text small{display:none}
  .header-cta span{display:none}
  .header-cta{width:44px;padding:0;justify-content:center}
  .banner-metric b{font-size:22px}
  .cta-band-inner{padding:26px 20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category3 */
:root{
  --c-ink:#0E1512;
  --c-ink-2:#1C2621;
  --c-bg:#F4F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E2E6E1;
  --c-text:#1A211D;
  --c-muted:#667069;
  --c-primary:#00C08B;
  --c-primary-deep:#046B4F;
  --c-accent:#FF5A36;
  --c-accent-soft:#FFEDE7;
  --r-btn:12px;
  --r-card:16px;
  --r-panel:20px;
  --sh-1:0 1px 2px rgba(14,21,18,.06);
  --sh-2:0 14px 32px -14px rgba(14,21,18,.22);
  --sh-3:0 24px 60px -30px rgba(14,21,18,.45);
  --font-cn:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Inter","Manrope",system-ui,sans-serif;
  --bs-body-bg:#F4F5F2;
  --bs-body-color:#1A211D;
  --bs-border-color:#E2E6E1;
  --bs-primary-rgb:0,192,139;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary-deep);text-decoration:none;transition:color .14s ease-out}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;padding-inline:24px;margin-inline:auto}
@media (min-width:1200px){.container{max-width:1240px}}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--c-primary-deep);
  background:rgba(0,192,139,.1);
  border:1px solid rgba(0,192,139,.24);
  border-radius:999px;padding:6px 14px;
}
.eyebrow i{font-size:12px}
.section{padding:96px 0}
.section-head{margin-bottom:32px;max-width:760px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.24;margin-top:14px}
.section-head p{color:var(--c-muted);margin-top:12px}
.rule{height:1px;background:var(--c-line);border:0;margin:0}

/* ============ 按钮 ============ */
.btn{
  --bs-btn-focus-shadow-rgb:0,192,139;
  border-radius:var(--r-btn);
  font-weight:600;
  font-size:15px;
  padding:.78rem 1.35rem;
  border:1px solid transparent;
  transition:background-color .14s ease-out,color .14s ease-out,transform .14s ease-out,box-shadow .14s ease-out;
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
}
.btn i{transition:transform .14s ease-out}
.btn:hover i{transform:translateX(3px)}
.btn:active{transform:translateY(0) scale(.985)}
.btn-primary{
  background:var(--c-primary);border-color:var(--c-primary);color:#04241A;
}
.btn-primary:hover,.btn-primary:focus{
  background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;
  transform:translateY(-2px);box-shadow:var(--sh-2);
}
.btn-dark-solid{
  background:var(--c-ink);border-color:var(--c-ink);color:#E7EDE9;
}
.btn-dark-solid:hover{background:var(--c-ink-2);border-color:var(--c-ink-2);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-ghost{
  background:transparent;border-color:var(--c-line);color:var(--c-text);
}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary-deep);transform:translateY(-2px);background:#fff}
.btn-light-line{
  background:transparent;border-color:rgba(231,237,233,.35);color:#E7EDE9;
}
.btn-light-line:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-2px)}

/* ============ 头部 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:transparent;
  padding:18px 0;
  transition:background-color .2s ease-out,padding .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-stuck{
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--c-line);
  box-shadow:0 6px 22px -18px rgba(14,21,18,.5);
  padding:10px 0;
}
.header-bar{
  display:flex;align-items:center;gap:18px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:18px;
  padding:8px;
  box-shadow:var(--sh-1);
}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 4px 6px;flex:0 0 auto}
.brand-mark{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  color:#fff;font-family:var(--font-num);font-weight:800;font-size:15px;
  display:grid;place-items:center;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:800;color:var(--c-ink);letter-spacing:-.02em}
.brand-text small{font-size:12px;color:var(--c-muted);letter-spacing:.01em}
.nav-panel{
  display:flex;align-items:center;gap:4px;flex:1 1 auto;
  overflow-x:auto;scroll-snap-type:x proximity;
  padding:2px;margin:0 4px;
  -ms-overflow-style:none;scrollbar-width:none;
}
.nav-panel::-webkit-scrollbar{display:none}
.nav-item{
  position:relative;
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:12px;
  font-size:14px;font-weight:600;color:var(--c-muted);white-space:nowrap;
  scroll-snap-align:start;
  transition:background-color .14s ease-out,color .14s ease-out;
}
.nav-item i{font-size:13px;color:#9AA49D;transition:color .14s ease-out}
.nav-item:hover{background:#F0F3EF;color:var(--c-ink)}
.nav-item:hover i{color:var(--c-primary-deep)}
.nav-item.active{background:rgba(0,192,139,.12);color:var(--c-primary-deep)}
.nav-item.active i{color:var(--c-primary-deep)}
.nav-item.active::before{
  content:"";position:absolute;left:2px;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:var(--c-primary);
}
.header-cta{flex:0 0 auto;padding:.6rem 1.1rem;font-size:14px}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);padding:20px 0 0}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-primary-deep)}
.crumb span.sep{color:#B9C1BB}
.crumb strong{color:var(--c-text);font-weight:600}

/* ============ 页面标题区 ============ */
.page-hero{padding:26px 0 60px;position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(14,21,18,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(14,21,18,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  pointer-events:none;
}
.page-hero .container{position:relative}
.hero-grid{display:grid;grid-template-columns:1.35fr .8fr;gap:48px;align-items:center;margin-top:18px}
.page-hero h1{
  font-size:clamp(30px,4.2vw,54px);
  line-height:1.1;font-weight:800;letter-spacing:-.02em;margin:18px 0 0;
}
.page-hero h1 em{font-style:normal;color:var(--c-primary-deep)}
.hero-lead{font-size:17px;color:var(--c-muted);margin-top:18px;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-aside{
  background:var(--c-ink);color:#E7EDE9;border-radius:var(--r-panel);
  padding:18px;box-shadow:var(--sh-3);position:relative;overflow:hidden;
}
.hero-aside img{border-radius:14px;aspect-ratio:16/10;object-fit:cover;width:100%}
.hero-aside .aside-tag{
  position:absolute;top:30px;left:30px;
  background:rgba(0,192,139,.16);border:1px solid rgba(0,192,139,.45);color:#7DF0CB;
  font-size:12px;font-weight:600;border-radius:999px;padding:5px 12px;letter-spacing:.04em;
}
.hero-aside .aside-foot{padding:16px 6px 4px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.aside-foot .k{font-family:var(--font-num);font-size:22px;font-weight:800;color:#fff;line-height:1.2}
.aside-foot .v{font-size:12px;color:#96A59D;letter-spacing:.02em}

/* ============ 指标条 ============ */
.metrics{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
}
.metric{padding:24px;border-right:1px solid var(--c-line)}
.metric:last-child{border-right:0}
.metric .n{font-family:var(--font-num);font-size:32px;font-weight:800;color:var(--c-ink);line-height:1.1;letter-spacing:-.02em}
.metric .n span{font-size:15px;color:var(--c-primary-deep);font-weight:700;margin-left:4px}
.metric .l{font-size:13px;color:var(--c-muted);margin-top:6px}

/* ============ 主体：锚点目录 + 分节长内容 ============ */
.layout{display:grid;grid-template-columns:262px 1fr;gap:48px;align-items:start}
.toc{
  position:sticky;top:104px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:18px;box-shadow:var(--sh-1);
}
.toc h3{font-size:13px;letter-spacing:.1em;color:var(--c-muted);font-weight:700;padding:0 8px 12px;border-bottom:1px solid var(--c-line);margin-bottom:10px}
.toc a{
  display:flex;gap:10px;align-items:flex-start;
  padding:10px;border-radius:10px;font-size:14px;color:var(--c-muted);font-weight:600;
  border-left:3px solid transparent;transition:background-color .16s ease-out,color .16s ease-out,border-color .16s ease-out;
}
.toc a .idx{font-family:var(--font-num);font-size:12px;color:#A9B2AB;font-weight:700;padding-top:2px}
.toc a:hover{background:#F0F3EF;color:var(--c-ink)}
.toc a.active{background:rgba(0,192,139,.1);color:var(--c-primary-deep);border-left-color:var(--c-primary)}
.toc a.active .idx{color:var(--c-primary-deep)}
.toc .toc-cta{
  margin-top:14px;padding:16px;border-radius:12px;background:var(--c-bg);
  border:1px dashed var(--c-line);
}
.toc .toc-cta p{font-size:13px;color:var(--c-muted);margin-bottom:10px}
.toc .toc-cta .btn{width:100%;font-size:13px;padding:.6rem 1rem}

.content-body{display:flex;flex-direction:column;gap:56px}
.block{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);scroll-margin-top:110px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.block:hover{border-color:rgba(0,192,139,.4);box-shadow:var(--sh-2);transform:translateY(-2px)}
.block-head{display:flex;gap:18px;align-items:flex-start;margin-bottom:20px}
.block-no{
  font-family:var(--font-num);font-size:30px;font-weight:800;line-height:1;
  color:var(--c-primary);letter-spacing:-.03em;flex:0 0 auto;padding-top:2px;
}
.block-head h2{font-size:clamp(20px,2.2vw,26px);line-height:1.3}
.block-head .sub{font-size:13px;color:var(--c-muted);margin-top:6px}
.block p{color:var(--c-muted)}
.checklist{margin-top:18px;display:grid;gap:12px}
.checklist li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--c-text)}
.checklist li i{color:var(--c-primary);font-size:14px;padding-top:7px}
.checklist li b{font-weight:700}
.figure{margin:24px 0 0;border-radius:14px;overflow:hidden;border:1px solid var(--c-line)}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.figure figcaption{font-size:13px;color:var(--c-muted);padding:12px 16px;background:var(--c-bg)}
.steps{display:grid;gap:0;margin-top:22px;border-left:2px solid var(--c-line);padding-left:22px}
.step{position:relative;padding-bottom:22px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-29px;top:7px;width:11px;height:11px;border-radius:50%;
  background:#fff;border:3px solid var(--c-primary);
}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:15px;margin:0}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.pill{
  font-size:13px;font-weight:600;color:var(--c-primary-deep);
  background:rgba(0,192,139,.1);border:1px solid rgba(0,192,139,.22);
  border-radius:999px;padding:5px 12px;
}
.pill.alt{color:#B33B1F;background:var(--c-accent-soft);border-color:rgba(255,90,54,.28)}

/* ============ 对比表 ============ */
.compare-wrap{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.compare-head{padding:28px 32px 0}
.compare-head h2{font-size:clamp(20px,2.2vw,26px)}
.compare-head p{color:var(--c-muted);margin-top:10px;font-size:15px}
.table-scroll{overflow-x:auto;padding:22px 32px 32px}
table.cmp{width:100%;border-collapse:collapse;min-width:660px}
table.cmp th,table.cmp td{padding:16px 18px;text-align:left;font-size:15px;border-bottom:1px solid var(--c-line);vertical-align:top}
table.cmp thead th{
  font-size:13px;letter-spacing:.06em;color:var(--c-muted);font-weight:700;
  background:var(--c-bg);border-bottom:1px solid var(--c-line);
}
table.cmp thead th:first-child{border-top-left-radius:12px}
table.cmp thead th:last-child{border-top-right-radius:12px}
table.cmp tbody tr:hover{background:#F8FAF7}
table.cmp td:first-child{font-weight:700;color:var(--c-ink)}
table.cmp .mark{color:var(--c-primary-deep);font-weight:700}
table.cmp tbody tr:last-child td{border-bottom:0}

/* ============ 提示条 ============ */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--c-ink);color:#E7EDE9;border-radius:var(--r-card);
  padding:24px 28px;box-shadow:var(--sh-3);
  background-image:radial-gradient(rgba(0,192,139,.16) 1px,transparent 1px);
  background-size:18px 18px;
}
.notice i{color:var(--c-primary);font-size:20px;padding-top:4px}
.notice strong{display:block;color:#fff;font-size:16px;margin-bottom:6px}
.notice p{color:#A9B7B0;font-size:15px;margin:0}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
.faq-grid h2{font-size:clamp(24px,3vw,32px);line-height:1.24;margin-top:14px}
.faq-grid .faq-side p{color:var(--c-muted);margin-top:14px}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:22px 4px;font-size:16px;font-weight:600;color:var(--c-text);
  transition:color .14s ease-out;
}
.faq-q:hover{color:var(--c-primary-deep)}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;border:1px solid var(--c-line);
  display:grid;place-items:center;font-family:var(--font-num);font-size:16px;color:var(--c-muted);
  transition:background-color .16s ease-out,color .16s ease-out,border-color .16s ease-out;
}
.faq-item.open .faq-q{color:var(--c-primary-deep)}
.faq-item.open .sign{background:var(--c-primary);border-color:var(--c-primary);color:#04241A}
.faq-body{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s ease-out}
.faq-item.open .faq-body{grid-template-rows:1fr}
.faq-body > div{overflow:hidden}
.faq-body p{color:var(--c-muted);font-size:15px;padding:0 4px 24px;margin:0;max-width:720px}

/* ============ 咨询 CTA ============ */
.consult{
  background:var(--c-ink);border-radius:var(--r-panel);color:#E7EDE9;
  padding:56px;box-shadow:var(--sh-3);position:relative;overflow:hidden;
}
.consult::after{
  content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,192,139,.26),transparent 68%);
}
.consult-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;position:relative;z-index:1}
.consult h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.22;margin-top:14px}
.consult .lead{color:#A9B7B0;margin-top:14px}
.consult ul{margin-top:24px;display:grid;gap:12px}
.consult ul li{display:flex;gap:12px;font-size:15px;color:#CBD6D0}
.consult ul li i{color:var(--c-primary);padding-top:6px;font-size:13px}
.form-card{background:#fff;border-radius:var(--r-card);padding:26px;color:var(--c-text);box-shadow:var(--sh-2)}
.form-card h3{font-size:18px;margin-bottom:18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
.form-control,.form-select{
  border-radius:var(--r-btn);border:1px solid var(--c-line);background:#FCFDFC;
  padding:.68rem .9rem;font-size:15px;color:var(--c-text);width:100%;
  transition:border-color .14s ease-out,box-shadow .14s ease-out,background-color .14s ease-out;
}
.form-control::placeholder{color:#A9B2AB}
.form-control:focus,.form-select:focus{
  border-color:var(--c-primary);background:#fff;
  box-shadow:0 0 0 4px rgba(0,192,139,.12);outline:none;
}
.field.error .form-control,.field.error .form-select{border-color:var(--c-accent);box-shadow:0 0 0 4px rgba(255,90,54,.1)}
.field .msg{display:none;font-size:13px;color:var(--c-accent);margin-top:6px}
.field.error .msg{display:block}
.form-foot{display:flex;justify-content:flex-end;margin-top:6px}
.form-tip{font-size:12px;color:var(--c-muted);margin-top:12px}
.form-ok{
  display:none;margin-top:14px;padding:12px 14px;border-radius:12px;
  background:rgba(0,192,139,.1);border:1px solid rgba(0,192,139,.3);
  color:var(--c-primary-deep);font-size:14px;
}
.form-ok.show{display:block}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#A9B7B0;margin-top:96px;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:#8A9690}
.footer-brand p{font-size:14px;color:#8A9690;margin-top:18px;max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul{display:grid;gap:11px}
.footer-col ul a{font-size:14px;color:#A9B7B0}
.footer-col ul a:hover{color:var(--c-primary)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:#8A9690;line-height:1.6}
.footer-contact li i{color:var(--c-primary);padding-top:6px;font-size:13px;flex:0 0 auto}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(231,237,233,.14);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:#7C8880;
}
.footer-bottom .disclaimer{color:#6E7A73}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease-out,transform .42s ease-out}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .layout{grid-template-columns:220px 1fr;gap:32px}
  .faq-grid{grid-template-columns:280px 1fr;gap:36px}
  .consult{padding:44px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .site-header{padding:12px 0}
  .header-bar{flex-wrap:nowrap;gap:10px;padding:8px}
  .brand-text small{display:none}
  .nav-panel{order:3;flex-basis:100%;margin:0;padding-bottom:4px}
  .header-bar{flex-wrap:wrap}
  .header-cta{padding:.55rem .9rem;font-size:13px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-aside{max-width:520px}
  .metrics{grid-template-columns:1fr 1fr}
  .metric:nth-child(2){border-right:0}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--c-line)}
  .layout{grid-template-columns:1fr;gap:24px}
  .toc{position:static;top:auto}
  .toc a{display:inline-flex;margin:0 4px 4px 0;border-left:0;border:1px solid var(--c-line)}
  .toc a.active{border-color:rgba(0,192,139,.4)}
  .toc nav{display:flex;flex-wrap:wrap}
  .faq-grid{grid-template-columns:1fr;gap:24px}
  .consult-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding-inline:18px}
  .section{padding:56px 0}
  .page-hero{padding:16px 0 44px}
  .block{padding:22px}
  .block-head{flex-direction:column;gap:8px}
  .block-no{font-size:24px}
  .compare-head{padding:22px 18px 0}
  .table-scroll{padding:18px}
  table.cmp{min-width:0;display:block}
  table.cmp thead{display:none}
  table.cmp tbody,table.cmp tr,table.cmp td{display:block;width:100%}
  table.cmp tr{
    border:1px solid var(--c-line);border-radius:14px;margin-bottom:14px;overflow:hidden;background:#fff;
  }
  table.cmp td{border-bottom:1px solid var(--c-line);padding:12px 16px;display:flex;gap:14px;justify-content:space-between}
  table.cmp td:last-child{border-bottom:0}
  table.cmp td::before{
    content:attr(data-label);font-size:12px;color:var(--c-muted);font-weight:700;flex:0 0 auto;
  }
  .consult{padding:28px 20px}
  .form-card{padding:20px}
  .form-foot{justify-content:stretch}
  .form-foot .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:52px 0 24px;margin-top:56px}
}
@media (max-width:520px){
  .metrics{grid-template-columns:1fr}
  .metric{border-right:0;border-bottom:1px solid var(--c-line)}
  .metric:last-child{border-bottom:0}
  .brand-text strong{font-size:15px}
  .brand-mark{width:36px;height:36px;font-size:13px}
  .page-hero h1{font-size:28px}
}

/* roulang page: category2 */
:root{
  --c-ink:#0E1512;
  --c-ink-2:#1C2621;
  --c-bg:#F4F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E2E6E1;
  --c-text:#1A211D;
  --c-muted:#667069;
  --c-primary:#00C08B;
  --c-primary-deep:#046B4F;
  --c-accent:#FF5A36;
  --c-accent-soft:#FFEDE7;
  --r-btn:12px;
  --r-card:16px;
  --r-panel:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,21,18,.06);
  --sh-2:0 14px 32px -14px rgba(14,21,18,.22);
  --sh-3:0 24px 60px -30px rgba(14,21,18,.45);
  --bs-body-bg:#F4F5F2;
  --bs-body-color:#1A211D;
  --bs-border-color:#E2E6E1;
  --bs-border-radius:16px;
  --bs-primary-rgb:0,192,139;
  --bs-link-color:#046B4F;
  --bs-link-hover-color:#046B4F;
  --bs-font-sans-serif:"Inter","Manrope","PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary-deep);text-decoration:none;transition:color 140ms ease-out}
a:hover{color:var(--c-primary)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:-0.02em}
h1{font-size:clamp(32px,4.4vw,52px);font-weight:800;line-height:1.12}
h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.24}
h3{font-size:clamp(18px,2vw,21px);font-weight:600;line-height:1.4}
p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container,.container-lg,.container-md,.container-sm{max-width:1240px;padding-inline:24px;margin-inline:auto}
.num{font-variant-numeric:tabular-nums}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(244,245,242,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background 160ms ease-out,border-color 160ms ease-out,box-shadow 160ms ease-out;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--c-line);box-shadow:var(--sh-1)}
.header-bar{display:flex;align-items:center;gap:18px;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand-mark{
  width:42px;height:42px;border-radius:12px;flex:none;
  background:linear-gradient(150deg,var(--c-ink),var(--c-ink-2));
  color:var(--c-primary);display:grid;place-items:center;
  font-weight:800;font-size:15px;letter-spacing:.02em;
  border:1px solid rgba(0,192,139,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16px;font-weight:800;color:var(--c-text);letter-spacing:-0.01em}
.brand-text small{font-size:12px;color:var(--c-muted)}
.nav-panel{
  display:flex;align-items:center;gap:6px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:18px;
  padding:8px;
  box-shadow:var(--sh-1);
  margin-left:auto;
}
.nav-item{
  position:relative;
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:12px;
  font-size:14px;font-weight:600;color:var(--c-muted);
  white-space:nowrap;
  transition:background 140ms ease-out,color 140ms ease-out;
}
.nav-item i{font-size:13px;color:currentColor;opacity:.9}
.nav-item:hover{background:#F0F3EF;color:var(--c-text)}
.nav-item.active{background:rgba(0,192,139,.12);color:var(--c-primary-deep)}
.nav-item.active::before{
  content:"";position:absolute;left:4px;top:9px;bottom:9px;width:3px;
  border-radius:2px;background:var(--c-primary);
}
.header-cta{flex:none}

/* ============ buttons ============ */
.btn{
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  padding:12px 20px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;
  transition:transform 140ms ease-out,background 140ms ease-out,color 140ms ease-out,border-color 140ms ease-out,box-shadow 140ms ease-out;
}
.btn i{transition:transform 140ms ease-out;font-size:14px}
.btn-primary{
  --bs-btn-bg:#00C08B;--bs-btn-border-color:#00C08B;--bs-btn-color:#062A20;
  --bs-btn-hover-bg:#046B4F;--bs-btn-hover-border-color:#046B4F;--bs-btn-hover-color:#fff;
  --bs-btn-active-bg:#046B4F;--bs-btn-active-border-color:#046B4F;--bs-btn-active-color:#fff;
  --bs-btn-focus-shadow-rgb:0,192,139;
  background:var(--c-primary);border-color:var(--c-primary);color:#062A20;
}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-primary:hover .fa-arrow-right{transform:translateX(3px)}
.btn-primary:active{transform:translateY(0) scale(.985)}
.btn-outline-pg{
  background:transparent;border:1px solid var(--c-line);color:var(--c-text);
}
.btn-outline-pg:hover{border-color:var(--c-primary);color:var(--c-primary-deep);transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-outline-pg:hover .fa-arrow-right{transform:translateX(3px)}
.btn-outline-pg:active{transform:translateY(0) scale(.985)}
.btn-sm-pg{padding:9px 16px;font-size:14px}
.btn-block{width:100%}

/* ============ section base ============ */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:36px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-primary-deep);
  background:rgba(0,192,139,.1);
  border-radius:var(--r-pill);
  padding:5px 12px;margin-bottom:16px;
}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--c-muted)}
.section-head .rule{width:56px;height:3px;border-radius:2px;background:var(--c-primary);margin-top:20px}

/* ============ page head ============ */
.page-head{
  position:relative;
  padding:44px 0 64px;
  background:
    radial-gradient(900px 340px at 8% -40%, rgba(0,192,139,.13), transparent 62%),
    radial-gradient(600px 300px at 92% 0%, rgba(255,90,54,.07), transparent 60%),
    var(--c-bg);
  border-bottom:1px solid var(--c-line);
}
.breadcrumb-pg{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb-pg a{color:var(--c-muted)}
.breadcrumb-pg a:hover{color:var(--c-primary-deep)}
.breadcrumb-pg i{font-size:10px;opacity:.6}
.breadcrumb-pg .current{color:var(--c-text);font-weight:600}
.page-head h1{max-width:860px}
.page-head .lead{max-width:760px;color:var(--c-muted);font-size:17px;margin-top:20px}
.page-head .head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag-pill{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;font-weight:600;color:var(--c-text);
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-pill);padding:6px 14px;
}
.tag-pill i{color:var(--c-primary);font-size:12px}
.metric-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-panel);
  margin-top:36px;overflow:hidden;box-shadow:var(--sh-1);
}
.metric-cell{padding:22px 24px;border-right:1px solid var(--c-line)}
.metric-cell:last-child{border-right:0}
.metric-cell .m-num{font-size:30px;font-weight:800;color:var(--c-ink);line-height:1.15;font-variant-numeric:tabular-nums}
.metric-cell .m-num em{font-style:normal;color:var(--c-primary);font-size:20px;margin-left:2px}
.metric-cell .m-label{font-size:13px;color:var(--c-muted);margin-top:6px}

/* ============ version card grid ============ */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.v-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-1);
  transition:transform 160ms ease-out,box-shadow 160ms ease-out,border-color 160ms ease-out;
}
.v-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(0,192,139,.4)}
.v-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDF1ED}
.v-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.v-card:hover .thumb img{transform:scale(1.03)}
.v-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,21,18,.05) 30%,rgba(14,21,18,.62))}
.thumb-pill{
  position:absolute;left:14px;top:14px;z-index:2;
  background:rgba(255,255,255,.94);color:var(--c-ink);
  font-size:12px;font-weight:700;border-radius:var(--r-pill);padding:5px 12px;
  display:inline-flex;align-items:center;gap:6px;
}
.thumb-pill i{color:var(--c-primary);font-size:11px}
.thumb-meta{
  position:absolute;left:14px;right:14px;bottom:12px;z-index:2;
  color:#E7EDE9;font-size:12px;display:flex;justify-content:space-between;gap:10px;
  font-variant-numeric:tabular-nums;
}
.v-card .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.v-card .body h3{font-size:19px}
.v-card .body p{font-size:14px;color:var(--c-muted);line-height:1.75}
.v-card .points{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.v-card .points li{display:flex;gap:8px;font-size:13px;color:var(--c-muted);align-items:flex-start}
.v-card .points i{color:var(--c-primary);font-size:12px;margin-top:7px}
.v-card .foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;gap:12px}
.v-card .foot a{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:7px}
.v-card .foot a:hover i{transform:translateX(3px)}
.v-card .foot a i{transition:transform 140ms ease-out;font-size:12px}
.v-card .foot .vol{font-size:12px;color:var(--c-muted);font-variant-numeric:tabular-nums}

/* ============ steps ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{position:relative;padding-top:24px;border-top:2px solid var(--c-line)}
.step::before{content:"";position:absolute;top:-2px;left:0;width:46px;height:2px;background:var(--c-primary);border-radius:2px}
.step .num{font-size:34px;font-weight:800;color:var(--c-primary);line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-0.03em}
.step h3{font-size:17px;margin:14px 0 8px}
.step p{font-size:14px;color:var(--c-muted)}
.step .chip{
  display:inline-flex;align-items:center;gap:6px;margin-top:12px;
  font-size:12px;font-weight:600;color:var(--c-primary-deep);
  background:rgba(0,192,139,.1);border-radius:var(--r-pill);padding:4px 11px;
}

/* ============ check list + dark panel ============ */
.two-col{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start}
.check-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-panel);padding:10px 24px;box-shadow:var(--sh-1)}
.check-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--c-line)}
.check-list li:last-child{border-bottom:0}
.check-list i{color:var(--c-primary);font-size:15px;margin-top:6px;flex:none}
.check-list strong{display:block;font-size:15px;font-weight:600}
.check-list span{font-size:13px;color:var(--c-muted)}
.panel-dark{
  position:relative;overflow:hidden;
  background:var(--c-ink);color:#E7EDE9;
  border-radius:var(--r-panel);padding:32px;
  box-shadow:var(--sh-3);
}
.panel-dark::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(0,192,139,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,192,139,.07) 1px,transparent 1px);
  background-size:44px 44px;
}
.panel-dark>*{position:relative;z-index:1}
.panel-dark h3{color:#fff;font-size:21px;margin-bottom:12px}
.panel-dark p{color:#A9B6AF;font-size:14px}
.panel-dark .alert-row{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid rgba(231,237,233,.12);align-items:flex-start}
.panel-dark .alert-row:last-of-type{border-bottom:0}
.panel-dark .alert-row i{color:var(--c-accent);margin-top:6px;font-size:13px}
.panel-dark .alert-row strong{display:block;color:#fff;font-size:14px;font-weight:600}
.panel-dark .alert-row span{font-size:13px;color:#A9B6AF}
.panel-dark .btn{margin-top:18px}

/* ============ faq ============ */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:start}
.faq-side h2{margin-bottom:14px}
.faq-side p{color:var(--c-muted);font-size:15px}
.faq-side .side-note{
  margin-top:22px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--sh-1);
}
.faq-side .side-note strong{display:block;font-size:14px;margin-bottom:6px}
.faq-side .side-note span{font-size:13px;color:var(--c-muted)}
.faq .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line)}
.faq .accordion-item:first-of-type{border-top:1px solid var(--c-line)}
.faq .accordion-button{
  background:transparent;box-shadow:none;padding:20px 0;
  font-size:16px;font-weight:600;color:var(--c-text);
  display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq .accordion-button:not(.collapsed){color:var(--c-primary-deep);background:transparent}
.faq .accordion-button:focus{box-shadow:none;border:0}
.faq .accordion-button::after{
  flex:none;width:24px;height:24px;background-image:none;content:"+";
  display:grid;place-items:center;font-size:17px;font-weight:600;
  color:var(--c-primary);border:1px solid var(--c-line);border-radius:var(--r-pill);
  transition:background 140ms ease-out,color 140ms ease-out;
}
.faq .accordion-button:not(.collapsed)::after{content:"–";background:var(--c-primary);color:#04231A;border-color:var(--c-primary)}
.faq .accordion-body{padding:0 40px 22px 0;font-size:14.5px;color:var(--c-muted)}
.faq .accordion-collapse{transition:height 240ms ease-out}

/* ============ cta card ============ */
.cta-panel{
  position:relative;overflow:hidden;
  background:var(--c-ink);color:#E7EDE9;
  border-radius:var(--r-panel);
  padding:44px;
  box-shadow:var(--sh-3);
}
.cta-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(600px 320px at 96% 6%, rgba(0,192,139,.16), transparent 62%),
    linear-gradient(rgba(0,192,139,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,192,139,.05) 1px,transparent 1px);
  background-size:auto,46px 46px,46px 46px;
}
.cta-panel>*{position:relative;z-index:1}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.cta-copy h2{color:#fff;margin-bottom:14px}
.cta-copy p{color:#A9B6AF;font-size:15px}
.cta-copy .cta-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.cta-copy .cta-list li{display:flex;gap:10px;font-size:14px;color:#D6DFDA}
.cta-copy .cta-list i{color:var(--c-primary);margin-top:6px;font-size:13px}
.cta-copy .ava-row{display:flex;align-items:center;gap:14px;margin-top:26px}
.ava-group{display:flex}
.ava-group span{
  width:34px;height:34px;border-radius:50%;margin-left:-10px;
  display:grid;place-items:center;font-size:12px;font-weight:700;color:#04231A;
  background:var(--c-primary);border:2px solid var(--c-ink);
}
.ava-group span:first-child{margin-left:0}
.ava-group span:nth-child(2){background:#8EE7C8}
.ava-group span:nth-child(3){background:#FFD9CE;color:#7A2A16}
.ava-row small{font-size:13px;color:#A9B6AF}
.form-card{background:var(--c-surface);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-3)}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card .form-tip{font-size:13px;color:var(--c-muted);margin-bottom:20px}
.form-card .row-gap{display:grid;gap:16px}
.form-label-pg{font-size:13px;font-weight:600;color:var(--c-text);margin-bottom:7px;display:block}
.form-control,.form-select{
  border-radius:12px;border:1px solid var(--c-line);
  padding:12px 14px;font-size:14.5px;color:var(--c-text);
  background:var(--c-bg);box-shadow:none;
  transition:border-color 140ms ease-out,box-shadow 140ms ease-out,background 140ms ease-out;
}
.form-control:focus,.form-select:focus{
  background:#fff;border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(0,192,139,.12);
}
.form-control::placeholder{color:#9AA39C}
.form-actions{display:flex;justify-content:flex-end;margin-top:6px}
.form-note{font-size:12.5px;color:var(--c-muted);margin-top:12px}

/* ============ footer ============ */
.site-footer{background:var(--c-ink);color:#A9B6AF;padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(231,237,233,.12)}
.site-footer .brand-text strong{color:#fff}
.site-footer .brand-text small{color:#8D9A93}
.footer-brand p{font-size:13.5px;line-height:1.8;margin-top:18px;color:#8D9A93}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:#A9B6AF;font-size:14px}
.footer-col a:hover{color:var(--c-primary)}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;color:#8D9A93;line-height:1.7}
.footer-contact i{color:var(--c-primary);margin-top:6px;font-size:12px;flex:none}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px;font-size:13px;color:#7C8A83}
.footer-bottom .disclaimer{color:#6C7A73}

/* ============ reveal ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 420ms ease-out,transform 420ms ease-out}
.reveal.is-visible{opacity:1;transform:none}
.reveal-stagger>*:nth-child(1){transition-delay:0ms}
.reveal-stagger>*:nth-child(2){transition-delay:60ms}
.reveal-stagger>*:nth-child(3){transition-delay:120ms}
.reveal-stagger>*:nth-child(4){transition-delay:180ms}
.reveal-stagger>*:nth-child(5){transition-delay:240ms}
.reveal-stagger>*:nth-child(6){transition-delay:300ms}
.reveal-stagger>*{opacity:0;transform:translateY(12px);transition:opacity 420ms ease-out,transform 420ms ease-out}
.reveal-stagger.is-visible>*{opacity:1;transform:none}

/* ============ responsive ============ */
@media (max-width:1399.98px){
  .nav-item{padding:0 12px;font-size:13.5px}
}
@media (max-width:1199.98px){
  .section{padding:80px 0}
  .brand-text small{display:none}
  .nav-item span{font-size:13px}
}
@media (max-width:991.98px){
  .header-bar{flex-wrap:wrap;padding:10px 0 12px;gap:12px}
  .nav-panel{
    order:3;width:100%;margin-left:0;border-radius:16px;
    overflow-x:auto;scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }
  .nav-panel::-webkit-scrollbar{display:none}
  .nav-item{scroll-snap-align:start}
  .header-cta{margin-left:auto}
  .header-cta span{display:none}
  .header-cta{padding:10px 14px}
  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .two-col{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .cta-grid{grid-template-columns:1fr;gap:30px}
  .metric-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-cell:nth-child(2){border-right:0}
  .metric-cell:nth-child(1),.metric-cell:nth-child(2){border-bottom:1px solid var(--c-line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-panel{padding:32px}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .page-head{padding:32px 0 48px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:20px}
  .metric-bar{grid-template-columns:1fr}
  .metric-cell{border-right:0;border-bottom:1px solid var(--c-line)}
  .metric-cell:last-child{border-bottom:0}
  .check-list{padding:6px 18px}
  .panel-dark{padding:24px}
  .cta-panel{padding:26px}
  .form-card{padding:22px}
  .form-actions{justify-content:stretch}
  .form-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .v-card .body{padding:20px}
  .faq .accordion-body{padding-right:8px}
}
@media (max-width:575.98px){
  .container,.container-lg,.container-md,.container-sm{padding-inline:18px}
  .brand-text strong{font-size:15px}
  .section-head{margin-bottom:26px}
  .v-card .thumb{aspect-ratio:16/10}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal,.reveal-stagger>*{opacity:1!important;transform:none!important}
}

/* roulang page: category4 */
:root{
  --c-ink:#0E1512;
  --c-ink-2:#1C2621;
  --c-bg:#F4F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E2E6E1;
  --c-text:#1A211D;
  --c-muted:#667069;
  --c-primary:#00C08B;
  --c-primary-deep:#046B4F;
  --c-accent:#FF5A36;
  --c-accent-soft:#FFEDE7;
  --r-btn:12px;
  --r-card:16px;
  --r-panel:20px;
  --sh-1:0 1px 2px rgba(14,21,18,.06);
  --sh-2:0 14px 32px -14px rgba(14,21,18,.22);
  --sh-3:0 24px 60px -30px rgba(14,21,18,.45);
  --bs-body-bg:#F4F5F2;
  --bs-body-color:#1A211D;
  --bs-border-color:#E2E6E1;
  --bs-primary-rgb:0,192,139;
  --bs-border-radius:16px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",Inter,Manrope,system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--bs-font-sans-serif);font-size:16px;line-height:1.8;color:var(--c-text);background:var(--c-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary-deep);text-decoration:none;transition:color .14s ease-out}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}
.container,.container-fluid{width:100%;max-width:1240px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}

/* ============ 按钮 ============ */
.btn{--bs-btn-border-radius:var(--r-btn);--bs-btn-padding-x:22px;--bs-btn-padding-y:12px;--bs-btn-font-size:15px;--bs-btn-font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:transform .14s ease-out,background-color .14s ease-out,border-color .14s ease-out,color .14s ease-out,box-shadow .14s ease-out}
.btn:active{transform:translateY(0) scale(.985)}
.btn-primary{--bs-btn-bg:var(--c-primary);--bs-btn-border-color:var(--c-primary);--bs-btn-color:#04231A;--bs-btn-hover-bg:var(--c-primary-deep);--bs-btn-hover-border-color:var(--c-primary-deep);--bs-btn-hover-color:#fff;--bs-btn-active-bg:var(--c-primary-deep);--bs-btn-active-border-color:var(--c-primary-deep);--bs-btn-active-color:#fff;--bs-btn-focus-shadow-rgb:0,192,139}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn-outline-ink{--bs-btn-color:var(--c-ink);--bs-btn-bg:#fff;--bs-btn-border-color:var(--c-line);--bs-btn-hover-bg:#fff;--bs-btn-hover-color:var(--c-primary-deep);--bs-btn-hover-border-color:var(--c-primary);--bs-btn-active-bg:#fff;--bs-btn-active-color:var(--c-primary-deep);--bs-btn-active-border-color:var(--c-primary)}
.btn-outline-ink:hover{transform:translateY(-2px);box-shadow:var(--sh-1)}
.btn-light-ghost{--bs-btn-color:#E7EDE9;--bs-btn-bg:transparent;--bs-btn-border-color:rgba(231,237,233,.35);--bs-btn-hover-bg:rgba(231,237,233,.1);--bs-btn-hover-color:#fff;--bs-btn-hover-border-color:rgba(231,237,233,.65);--bs-btn-active-bg:rgba(231,237,233,.16);--bs-btn-active-color:#fff;--bs-btn-active-border-color:#E7EDE9}
.btn-light-ghost:hover{transform:translateY(-2px)}
.btn .arrow{transition:transform .14s ease-out}
.btn:hover .arrow{transform:translateX(3px)}

/* ============ 头部 ============ */
.site-header{position:sticky;top:0;z-index:1030;padding:14px 0;background:linear-gradient(180deg,rgba(244,245,242,.97),rgba(244,245,242,.78));backdrop-filter:blur(10px);transition:background-color .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;border-bottom:1px solid transparent}
.site-header.is-stuck{background:#fff;border-bottom-color:var(--c-line);box-shadow:var(--sh-1)}
.header-bar{display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{width:44px;height:44px;border-radius:12px;background:var(--c-ink);color:var(--c-primary);display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:.02em;flex:0 0 auto}
.brand-text strong{display:block;font-size:16px;font-weight:800;color:var(--c-ink);letter-spacing:-.01em;line-height:1.3}
.brand-text small{display:block;font-size:12px;color:var(--c-muted);line-height:1.4}
.nav-panel{flex:1 1 auto;display:flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--c-line);border-radius:18px;padding:8px;box-shadow:var(--sh-1);overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none}
.nav-panel::-webkit-scrollbar{display:none}
.nav-item{position:relative;display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:12px;font-size:14px;font-weight:600;color:var(--c-muted);white-space:nowrap;scroll-snap-align:start;transition:background-color .14s ease-out,color .14s ease-out}
.nav-item i{font-size:13px;opacity:.85}
.nav-item:hover{background:#F0F3EF;color:var(--c-ink)}
.nav-item.active{background:rgba(0,192,139,.12);color:var(--c-primary-deep)}
.nav-item.active::before{content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);width:3px;height:18px;border-radius:2px;background:var(--c-primary)}
.header-cta{flex:0 0 auto;white-space:nowrap}

/* ============ 通用区块 ============ */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:32px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--c-primary-deep);margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--c-primary)}
.section-head h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px}
.section-head p{color:var(--c-muted);font-size:16px}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* ============ 面包屑 ============ */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:22px}
.crumb a{color:var(--c-muted)}
.crumb a:hover{color:var(--c-primary-deep)}
.crumb i{font-size:10px;opacity:.6}
.crumb .current{color:var(--c-ink);font-weight:600}

/* ============ 首屏 ============ */
.page-hero{padding:56px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:start}
.hero-title{font-size:clamp(30px,4.4vw,54px);font-weight:800;letter-spacing:-.02em;line-height:1.08;margin-bottom:20px}
.hero-title em{font-style:normal;color:var(--c-primary-deep)}
.hero-lead{color:var(--c-muted);font-size:17px;max-width:640px;margin-bottom:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--c-line);font-size:13px;font-weight:600;color:var(--c-muted)}
.chip i{color:var(--c-primary-deep);font-size:12px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.snapshot{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-panel);padding:8px;box-shadow:var(--sh-1)}
.snapshot-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 16px 12px}
.snapshot-head h3{font-size:17px}
.snapshot-head span{font-size:12px;font-weight:700;color:var(--c-primary-deep);background:rgba(0,192,139,.12);border-radius:999px;padding:4px 10px}
.snapshot-list li{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border-top:1px solid var(--c-line)}
.snapshot-list .idx{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:#F0F3EF;color:var(--c-ink);font-size:12px;font-weight:800;display:grid;place-items:center}
.snapshot-list strong{display:block;font-size:15px;color:var(--c-ink);font-weight:700;line-height:1.5}
.snapshot-list small{display:block;font-size:13px;color:var(--c-muted);line-height:1.6}

/* ============ 对比表 ============ */
.cmp-wrap{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-panel);overflow:hidden;box-shadow:var(--sh-1)}
.cmp-table{width:100%;border-collapse:separate;border-spacing:0}
.cmp-table th,.cmp-table td{padding:20px 22px;text-align:left;vertical-align:top;font-size:15px}
.cmp-table thead th{background:#FAFBF9;border-bottom:1px solid var(--c-line);width:27%}
.cmp-table thead th:first-child{width:19%;background:#F7F8F6}
.cmp-table thead th .plan-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--c-primary-deep);background:rgba(0,192,139,.12);border-radius:999px;padding:4px 10px;margin-bottom:10px}
.cmp-table thead th strong{display:block;font-size:17px;color:var(--c-ink);margin-bottom:6px}
.cmp-table thead th em{display:block;font-style:normal;font-size:13px;color:var(--c-muted)}
.cmp-table thead th.is-featured{background:var(--c-ink);border-bottom-color:var(--c-ink)}
.cmp-table thead th.is-featured strong{color:#fff}
.cmp-table thead th.is-featured em{color:rgba(231,237,233,.72)}
.cmp-table thead th.is-featured .plan-tag{background:rgba(0,192,139,.22);color:#5CE0B4}
.cmp-table tbody th{font-weight:700;font-size:14px;color:var(--c-ink);background:#F7F8F6;border-bottom:1px solid var(--c-line);border-right:1px solid var(--c-line)}
.cmp-table tbody td{border-bottom:1px solid var(--c-line);color:var(--c-text)}
.cmp-table tbody td.is-featured{background:rgba(0,192,139,.05)}
.cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:none}
.cmp-note{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:18px;font-size:13px;color:var(--c-muted)}
.cmp-note i{color:var(--c-primary-deep)}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scene-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .14s ease-out,box-shadow .14s ease-out,border-color .14s ease-out;display:flex;flex-direction:column}
.scene-card:hover{transform:translateY(-2px);border-color:rgba(0,192,139,.4);box-shadow:var(--sh-2)}
.scene-media{position:relative;height:172px;overflow:hidden;background:var(--c-ink)}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.scene-card:hover .scene-media img{transform:scale(1.03)}
.scene-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,21,18,.15),rgba(14,21,18,.72))}
.scene-media span{position:absolute;left:20px;bottom:16px;z-index:2;color:#fff;font-size:13px;font-weight:700;letter-spacing:.04em}
.scene-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1}
.scene-body h3{font-size:20px}
.scene-body p{color:var(--c-muted);font-size:15px}
.scene-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--c-text);padding:5px 0}
.scene-list i{color:var(--c-primary);font-size:12px;margin-top:7px}
.scene-foot{margin-top:auto;padding-top:6px}
.scene-foot a{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}

/* ============ 安全提示条 ============ */
.tips-band{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.tips-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:48px 0}
.tip{display:flex;gap:16px;align-items:flex-start}
.tip .ico{flex:0 0 auto;width:46px;height:46px;border-radius:14px;background:var(--c-accent-soft);color:var(--c-accent);display:grid;place-items:center;font-size:18px}
.tip h3{font-size:17px;margin-bottom:6px}
.tip p{font-size:14px;color:var(--c-muted)}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
.faq-layout h2{font-size:clamp(24px,3vw,32px);margin-bottom:14px}
.faq-layout p{color:var(--c-muted);margin-bottom:18px}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{width:100%;background:transparent;border:0;padding:22px 4px;display:flex;align-items:center;justify-content:space-between;gap:20px;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);cursor:pointer;transition:color .14s ease-out}
.faq-q:hover{color:var(--c-primary-deep)}
.faq-q i{flex:0 0 auto;width:26px;height:26px;border-radius:8px;border:1px solid var(--c-line);display:grid;place-items:center;font-size:12px;color:var(--c-primary-deep);transition:transform .24s ease-out,background-color .14s ease-out}
.faq-item.open .faq-q i{transform:rotate(45deg);background:rgba(0,192,139,.12);border-color:rgba(0,192,139,.35)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .24s ease-out}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{padding:0 46px 24px 4px;color:var(--c-muted);font-size:15px}

/* ============ CTA 深色面板 ============ */
.cta-panel{position:relative;border-radius:var(--r-panel);overflow:hidden;background:var(--c-ink);box-shadow:var(--sh-3);padding:56px}
.cta-panel::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.28}
.cta-panel::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(14,21,18,.96) 0%,rgba(14,21,18,.82) 52%,rgba(14,21,18,.6) 100%)}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center}
.cta-inner h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:16px}
.cta-inner p{color:rgba(231,237,233,.78);font-size:15px;max-width:640px}
.cta-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-meta span{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#E7EDE9;background:rgba(231,237,233,.1);border:1px solid rgba(231,237,233,.18);border-radius:999px;padding:7px 14px}
.cta-meta i{color:var(--c-primary)}
.cta-actions{display:flex;flex-direction:column;gap:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#E7EDE9;margin-top:96px;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:rgba(231,237,233,.6)}
.footer-brand p{margin-top:18px;font-size:14px;color:rgba(231,237,233,.68);max-width:360px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:rgba(231,237,233,.72);font-size:14px}
.footer-col a:hover{color:var(--c-primary)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:rgba(231,237,233,.72);margin-bottom:12px}
.footer-contact i{color:var(--c-primary);margin-top:6px;font-size:13px}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(231,237,233,.14);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(231,237,233,.58)}
.footer-bottom .disclaimer{max-width:640px}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s ease-out,transform .42s ease-out}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover,.scene-card:hover{transform:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-grid{gap:36px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .header-bar{flex-wrap:wrap;gap:12px}
  .nav-panel{order:3;flex-basis:100%;width:100%}
  .header-cta{margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero{padding:40px 0 56px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-panel{padding:40px}
  .tips-grid{grid-template-columns:1fr;gap:20px;padding:40px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .scene-grid{grid-template-columns:1fr}
  .cta-panel{padding:28px 22px;border-radius:16px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .cmp-wrap{background:transparent;border:0;box-shadow:none;border-radius:0}
  .cmp-table{display:block}
  .cmp-table thead{display:none}
  .cmp-table tbody,.cmp-table tr,.cmp-table th,.cmp-table td{display:block;width:100%}
  .cmp-table tbody tr{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:6px 18px 12px;margin-bottom:16px;box-shadow:var(--sh-1)}
  .cmp-table tbody th{background:transparent;border:0;border-bottom:1px solid var(--c-line);border-right:0;padding:14px 0 10px;font-size:16px}
  .cmp-table tbody td{display:flex;justify-content:space-between;gap:16px;border:0;border-bottom:1px dashed var(--c-line);padding:11px 0;font-size:14px}
  .cmp-table tbody td:last-child{border-bottom:0}
  .cmp-table tbody td::before{content:attr(data-label);flex:0 0 auto;color:var(--c-muted);font-size:13px;font-weight:600}
  .cmp-table tbody td.is-featured{background:transparent}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .hero-actions .btn{width:100%}
}
@media (max-width:520px){
  .container,.container-fluid{padding-left:18px;padding-right:18px}
  .brand-text small{display:none}
  .header-cta span{display:none}
  .header-cta{--bs-btn-padding-x:14px}
  .faq-a-inner p{padding-right:8px}
  .faq-q{font-size:15px}
}