/* roulang page: index */
:root{
  --brand:#0B6E63;
  --brand-2:#00D1B2;
  --brand-soft:#E6F4F1;
  --action:#FF6B35;
  --action-dark:#E8551F;
  --bg:#F6F7F2;
  --dark:#0E1513;
  --dark-2:#16211E;
  --line:#DDE5DF;
  --text:#17201D;
  --muted:#5B6964;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow:0 8px 24px rgba(11,110,99,.08);
  --shadow-hover:0 12px 32px rgba(11,110,99,.14);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--action);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.2px;color:var(--text);line-height:1.3;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 22px;}
.section{padding:88px 0;}
.band-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.band-dark{background:var(--dark);color:#C9DBD6;}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:80;
  background:rgba(246,247,242,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-head.scrolled{box-shadow:0 8px 24px rgba(11,110,99,.10);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:74px;}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 40px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;
  box-shadow:0 8px 18px rgba(11,110,99,.30);
}
.brand-mark i{display:block;width:14px;height:14px;border:3px solid #fff;border-radius:4px;transform:rotate(45deg);}
.brand-text{display:flex;flex-direction:column;line-height:1.18;}
.brand-text b{font-size:17.5px;font-weight:800;color:var(--text);letter-spacing:.2px;}
.brand-text small{font-size:11.5px;color:var(--muted);letter-spacing:1.4px;font-weight:500;}
.nav-main{display:flex;align-items:center;gap:22px;}
.nav-main ul{display:flex;align-items:center;gap:8px;}
.nav-main ul a{
  position:relative;display:inline-block;padding:9px 15px;border-radius:999px;
  font-size:15px;font-weight:600;color:var(--text);transition:.22s ease;
}
.nav-main ul a:hover{color:var(--brand);background:var(--brand-soft);}
.nav-main ul a.active{color:var(--brand);background:var(--brand-soft);}
.nav-main ul a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;border-radius:2px;background:var(--brand-2);
}
.nav-cta{
  display:inline-block;padding:10px 20px;border-radius:var(--radius-btn);
  background:var(--action);color:#fff;font-weight:700;font-size:14.5px;
  box-shadow:0 8px 20px rgba(255,107,53,.26);transition:.22s ease;white-space:nowrap;
}
.nav-cta:hover{background:var(--action-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,107,53,.34);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:#fff;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--text);transition:.25s ease;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;color:#E7F2EF;}
.hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(14,21,19,.88) 0%,rgba(11,110,99,.66) 100%);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
  padding-top:86px;padding-bottom:92px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.6px;
  color:#9FF2E2;background:rgba(0,209,178,.14);border:1px solid rgba(0,209,178,.36);
}
.hero h1{
  font-size:44px;line-height:1.24;color:#fff;margin:22px 0 18px;font-weight:800;letter-spacing:-.5px;
}
.hero-sub{font-size:17px;line-height:1.85;color:#C6DCD7;max-width:640px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.btn-main{
  display:inline-block;padding:14px 28px;border-radius:var(--radius-btn);
  background:var(--action);color:#fff;font-weight:700;font-size:16px;
  box-shadow:0 10px 26px rgba(255,107,53,.32);transition:.22s ease;
}
.btn-main:hover{background:var(--action-dark);color:#fff;transform:translateY(-2px);box-shadow:0 14px 32px rgba(255,107,53,.4);}
.btn-main:active{transform:scale(.98);}
.btn-ghost{
  display:inline-block;padding:13px 26px;border-radius:var(--radius-btn);
  border:1.5px solid rgba(255,255,255,.55);color:#fff;font-weight:600;font-size:16px;transition:.22s ease;
}
.btn-ghost:hover{border-color:var(--brand-2);color:var(--brand-2);background:rgba(0,209,178,.10);}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14.5px;color:#B4C9C4;}
.hero-points li{display:flex;align-items:center;gap:8px;}
.hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2);flex:0 0 6px;}
.hero-side{display:grid;gap:16px;}
.data-card{
  background:rgba(14,21,19,.78);border:1px solid rgba(0,209,178,.30);
  border-radius:var(--radius-card);padding:22px 24px;backdrop-filter:blur(6px);
}
.data-card .num{font-size:30px;font-weight:800;color:var(--brand-2);line-height:1.1;}
.data-card .num span{font-size:15px;font-weight:600;color:#9CC9BF;margin-left:4px;}
.data-card .lbl{margin-top:8px;font-size:13.5px;color:#A6BBB6;}

/* ---------- 通用标题 ---------- */
.section-head{max-width:780px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 15px;border-radius:999px;
  font-size:13px;font-weight:700;color:var(--brand);background:var(--brand-soft);letter-spacing:.5px;
}
.eyebrow.on-dark{color:#8DF0DE;background:rgba(0,209,178,.14);}
.section-head h2{font-size:30px;margin:16px 0 12px;}
.section-head p{color:var(--muted);font-size:16px;}
.band-dark .section-head h2{color:#fff;}
.band-dark .section-head p{color:#9FB5AF;}

/* ---------- KPI ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.kpi{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow);transition:.25s ease;
}
.kpi:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BCE3DB;}
.kpi .num{font-size:36px;font-weight:800;color:var(--brand);line-height:1;letter-spacing:-1px;}
.kpi .num em{font-size:16px;font-style:normal;font-weight:700;margin-left:3px;color:var(--muted);}
.kpi .lbl{margin-top:12px;font-size:13.5px;color:var(--muted);}
.kpi .trend{display:inline-block;margin-top:14px;padding:4px 11px;border-radius:999px;font-size:12.5px;font-weight:700;}
.trend-up{color:var(--brand);background:var(--brand-soft);}
.trend-hot{color:var(--action);background:#FFEDE5;}

/* ---------- 服务矩阵 ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.svc{
  position:relative;display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow);transition:.25s ease;overflow:hidden;
}
.svc:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BCE3DB;}
.svc-no{font-size:13px;font-weight:800;color:var(--brand-2);letter-spacing:1px;}
.svc h3{font-size:21px;margin:12px 0 10px;}
.svc p{font-size:15px;color:var(--muted);}
.svc-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-block;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:var(--brand);background:var(--brand-soft);
}
.svc-link{margin-top:18px;font-size:14.5px;font-weight:700;color:var(--brand);display:inline-block;}
.svc-link:hover{color:var(--action);}
.svc-a{grid-column:1/3;grid-row:1/2;}
.svc-a .svc-cover{margin:-26px -26px 22px;height:190px;overflow:hidden;}
.svc-a .svc-cover img{width:100%;height:100%;object-fit:cover;}
.svc-b{
  grid-column:3/4;grid-row:1/3;
  background:var(--dark);border-color:#22332E;color:#C9DBD6;
}
.svc-b h3{color:#fff;}
.svc-b p{color:#9FB5AF;}
.svc-b .svc-no{color:#8DF0DE;}
.svc-b .tag{color:#8DF0DE;background:rgba(0,209,178,.14);}
.svc-b .svc-link{color:#8DF0DE;}
.svc-metric{margin-top:22px;padding-top:20px;border-top:1px solid #22332E;display:grid;gap:18px;}
.svc-metric .m-num{font-size:28px;font-weight:800;color:var(--brand-2);line-height:1.1;}
.svc-metric .m-lbl{font-size:13px;color:#93A9A3;margin-top:4px;}
.svc-c{grid-column:4/5;grid-row:1/2;}
.svc-d{grid-column:1/3;grid-row:2/3;}
.svc-e{grid-column:4/5;grid-row:2/3;}

/* ---------- 结果对比 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-col{border-radius:var(--radius-card);padding:30px;border:1px solid var(--line);}
.compare-col.before{background:#fff;}
.compare-col.after{background:linear-gradient(160deg,#0B6E63 0%,#0E1513 100%);border-color:transparent;color:#DCEBE7;}
.compare-col h3{font-size:21px;margin-bottom:6px;}
.compare-col.after h3{color:#fff;}
.compare-col .col-note{font-size:13.5px;color:var(--muted);margin-bottom:24px;}
.compare-col.after .col-note{color:#9FC3BB;}
.cmp-item{margin-bottom:20px;}
.cmp-item:last-child{margin-bottom:0;}
.cmp-top{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:14.5px;}
.cmp-top b{font-weight:700;}
.compare-col.after .cmp-top b{color:var(--action);}
.compare-col.before .cmp-top b{color:var(--muted);}
.bar{height:10px;border-radius:999px;background:#EDF1EE;overflow:hidden;margin-top:8px;}
.compare-col.after .bar{background:rgba(255,255,255,.12);}
.bar i{display:block;height:100%;border-radius:999px;background:var(--action);transition:width .6s ease;}
.compare-col.before .bar i{background:#C3D2CC;}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:40px;}
.news-head .section-head{margin-bottom:0;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow);transition:.25s ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BCE3DB;}
.news-cover{display:block;aspect-ratio:16/9;overflow:hidden;background:#E9EFEC;}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.news-card:hover .news-cover img{transform:scale(1.05);}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);margin-bottom:12px;}
.chip{display:inline-block;padding:3px 11px;border-radius:999px;font-size:12.5px;font-weight:700;color:var(--brand);background:var(--brand-soft);}
.news-body h3{font-size:18px;line-height:1.5;margin-bottom:10px;}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{font-size:14.5px;color:var(--muted);margin-bottom:18px;}
.news-body .more{margin-top:auto;font-size:14px;font-weight:700;color:var(--brand);}
.news-body .more:hover{color:var(--action);}
.empty-state{
  grid-column:1/-1;padding:48px 24px;text-align:center;border:1px dashed var(--line);
  border-radius:var(--radius-card);background:#fff;color:var(--muted);font-size:15px;
}

/* ---------- 服务承诺 ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:32px;}
.trust-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow);transition:.25s ease;
}
.trust-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BCE3DB;}
.trust-icon{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-weight:800;font-size:17px;margin-bottom:16px;
}
.trust-card h3{font-size:19px;margin-bottom:10px;}
.trust-card p{font-size:14.5px;color:var(--muted);}
.voice-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
.voice{
  background:var(--dark);color:#C9DBD6;border-radius:var(--radius-card);padding:28px;
  border-left:3px solid var(--brand-2);font-size:15px;
}
.voice p{color:#DCEBE7;}
.voice .who{margin-top:16px;font-size:13.5px;color:#8DF0DE;font-weight:600;}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-left:3px solid transparent;
  border-radius:12px;padding:0 22px;box-shadow:var(--shadow);transition:.25s ease;
}
.faq-item[open]{border-left-color:var(--brand-2);background:#FBFEFD;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:18px;font-weight:700;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:700;color:var(--brand);line-height:1;flex:0 0 auto;transition:.25s ease;
}
.faq-item[open] summary::after{content:"−";color:var(--action);}
.faq-item summary:focus-visible{outline:3px solid rgba(0,209,178,.35);outline-offset:4px;border-radius:8px;}
.faq-item .faq-body{padding-bottom:20px;font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- 转化表单 ---------- */
.contact-band{
  background:var(--dark);border-radius:20px;padding:52px;
  display:grid;grid-template-columns:.92fr 1.08fr;gap:52px;align-items:start;
}
.contact-band h2{color:#fff;font-size:30px;margin:16px 0 16px;}
.contact-band .lead{color:#A6BBB6;font-size:16px;line-height:1.85;}
.contact-list{margin-top:26px;display:grid;gap:14px;}
.contact-list li{display:flex;gap:12px;font-size:14.5px;color:#C9DBD6;}
.contact-list li b{color:var(--brand-2);font-weight:800;flex:0 0 auto;}
.form-card{background:#132320;border:1px solid #22332E;border-radius:var(--radius-card);padding:30px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;font-weight:600;color:#B9CFC9;margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;border-radius:var(--radius-btn);
  border:1px solid #2A3A35;background:#0E1917;color:#EAF3F0;
  padding:0 14px;font-size:15px;outline:none;transition:.2s ease;
}
.field textarea{height:auto;min-height:116px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#8DF0DE 50%),linear-gradient(135deg,#8DF0DE 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(0,209,178,.20);}
.field input::placeholder,.field textarea::placeholder{color:#5E7570;}
.btn-submit{
  width:100%;height:50px;border:0;border-radius:var(--radius-btn);
  background:var(--action);color:#fff;font-size:16px;font-weight:700;cursor:pointer;transition:.22s ease;
}
.btn-submit:hover{background:var(--action-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,107,53,.36);}
.btn-submit:active{transform:scale(.98);}
.form-tip{margin-top:14px;font-size:13px;color:#7C918C;}
.form-msg{margin-top:14px;font-size:14px;font-weight:600;color:var(--brand-2);display:none;}
.form-msg.show{display:block;}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--dark);color:#93A9A3;padding:66px 0 0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;padding-bottom:46px;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.foot-brand b{color:#fff;font-size:17.5px;font-weight:800;}
.foot-brand small{display:block;font-size:11.5px;color:#7C918C;letter-spacing:1.2px;}
.site-foot p{font-size:14px;line-height:1.85;color:#8FA5A0;}
.foot-col h4{color:#fff;font-size:15.5px;margin-bottom:18px;font-weight:700;}
.foot-col li{margin-bottom:11px;font-size:14px;}
.foot-col a{color:#9FB5AF;}
.foot-col a:hover{color:var(--brand-2);}
.foot-bottom{
  border-top:1px solid #1E2C28;padding:22px 0;display:flex;flex-wrap:wrap;
  justify-content:space-between;gap:12px;font-size:13px;color:#71867F;
}
.foot-bottom a{color:#71867F;}
.foot-bottom a:hover{color:var(--brand-2);}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .hero h1{font-size:40px;}
  .section{padding:78px 0;}
}
@media (max-width:992px){
  .nav-toggle{display:flex;}
  .nav-main{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:10px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 20px 34px rgba(11,110,99,.12);
    padding:14px 22px 22px;display:none;
  }
  .nav-main.open{display:flex;}
  .nav-main ul{flex-direction:column;align-items:stretch;gap:4px;}
  .nav-main ul a{padding:12px 14px;border-radius:10px;}
  .nav-main ul a.active::after{left:14px;right:auto;width:28px;bottom:6px;}
  .nav-cta{text-align:center;margin-top:6px;}
  .hero-inner{grid-template-columns:1fr;gap:38px;padding-top:64px;padding-bottom:66px;}
  .hero h1{font-size:34px;}
  .hero-sub{font-size:16px;}
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .svc-grid{grid-template-columns:1fr 1fr;}
  .svc-a{grid-column:1/3;grid-row:auto;}
  .svc-b{grid-column:1/3;grid-row:auto;}
  .svc-c,.svc-e{grid-column:auto;grid-row:auto;}
  .svc-d{grid-column:1/3;grid-row:auto;}
  .compare{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr 1fr;}
  .trust-grid{grid-template-columns:1fr;}
  .voice-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .contact-band{grid-template-columns:1fr;gap:36px;padding:36px 28px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .section{padding:58px 0;}
  .hero h1{font-size:29px;}
  .section-head h2{font-size:24px;}
  .kpi-grid{grid-template-columns:1fr;}
  .svc-grid{grid-template-columns:1fr;}
  .svc-a,.svc-b,.svc-d{grid-column:auto;}
  .news-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .contact-band h2{font-size:24px;}
}
@media (max-width:576px){
  .wrap{padding:0 16px;}
  .hero h1{font-size:26px;}
  .brand-text b{font-size:15.5px;}
  .brand-text small{display:none;}
  .foot-grid{grid-template-columns:1fr;}
  .compare-col{padding:24px 20px;}
  .form-card{padding:22px;}
}

/* roulang page: article */
:root{
  --teal:#0B6E63;
  --teal-deep:#075148;
  --cyan:#00D1B2;
  --orange:#FF6B35;
  --orange-deep:#E8541F;
  --bg:#F6F7F2;
  --dark:#0E1513;
  --dark-2:#16211D;
  --line:#DDE5DF;
  --ink:#17201D;
  --ink2:#5B6964;
  --card:#FFFFFF;
  --warn:#D9534F;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh:0 8px 24px rgba(11,110,99,.08);
  --sh-h:0 12px 32px rgba(11,110,99,.14);
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--teal);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
a:hover{color:var(--teal-deep)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{font-weight:800;line-height:1.3;margin:0;color:var(--ink);letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0}
.wrap{width:min(100% - 40px,var(--wrap));margin-inline:auto}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:1000;
  background:rgba(246,247,242,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-head.is-stuck{box-shadow:0 6px 20px rgba(11,110,99,.10)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 38px;
  background:linear-gradient(135deg,var(--teal),var(--cyan));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(11,110,99,.28);
}
.brand-mark i{width:12px;height:12px;border-radius:50%;background:var(--orange);display:block;box-shadow:0 0 0 4px rgba(255,107,53,.22)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:18px;font-weight:800;letter-spacing:.4px}
.brand-text small{font-size:11.5px;color:var(--ink2);letter-spacing:1.2px}
.nav-main{display:flex;align-items:center;gap:20px}
.nav-main ul{display:flex;align-items:center;gap:4px;list-style:none;padding:0}
.nav-main ul a{
  display:block;position:relative;
  padding:10px 16px;border-radius:var(--r-pill);
  font-size:15.5px;font-weight:600;color:var(--ink);
}
.nav-main ul a:hover{background:rgba(0,209,178,.12);color:var(--teal)}
.nav-main ul a.active{color:var(--teal);background:rgba(0,209,178,.16)}
.nav-main ul a.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:5px;height:2px;
  background:var(--teal);border-radius:2px;
}
.nav-cta{
  display:inline-block;padding:11px 22px;border-radius:var(--r-btn);
  background:var(--orange);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 8px 18px rgba(255,107,53,.28);
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:var(--orange-deep);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(255,107,53,.34)}
.nav-cta:active{transform:scale(.98)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;padding:0;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- hero ---------- */
.art-hero{
  position:relative;color:#fff;padding:54px 0 50px;
  background:linear-gradient(115deg,rgba(14,21,19,.92),rgba(11,110,99,.72)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.art-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(255,255,255,.14);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:18px}
.crumb a{color:rgba(255,255,255,.86)}
.crumb a:hover{color:var(--cyan)}
.crumb .sep{opacity:.5}
.crumb .cur{color:#fff}
.art-hero h1{
  color:#fff;font-size:clamp(28px,3.6vw,44px);line-height:1.25;max-width:940px;
  letter-spacing:.4px;
}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.post-meta span{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);
  font-size:13px;color:rgba(255,255,255,.92);
}
.post-meta span.tag{background:rgba(255,107,53,.95);border-color:transparent;font-weight:700}

/* ---------- layout ---------- */
.art-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:38px;
  padding:56px 0 8px;align-items:start;
}
.card-panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh);
}
.art-cover{margin:0 0 28px;border-radius:12px;overflow:hidden;position:relative}
.art-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px}
.art-cover figcaption{
  margin-top:10px;font-size:13px;color:var(--ink2);
}
.lead-box{
  background:rgba(0,209,178,.08);border:1px solid rgba(11,110,99,.18);
  border-left:5px solid var(--teal);border-radius:0 12px 12px 0;
  padding:20px 24px;font-size:15.5px;color:#26433c;line-height:1.85;margin-bottom:32px;
}
.lead-box b{color:var(--teal)}

/* ---------- article body ---------- */
.article-body{max-width:820px;font-size:17px;line-height:1.9;color:#26332f;word-break:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:28px;margin:1.9em 0 .8em;padding-left:14px;border-left:4px solid var(--teal);
  scroll-margin-top:110px;
}
.article-body h3{font-size:22px;margin:1.6em 0 .6em;color:#1b2a26;scroll-margin-top:110px}
.article-body h4{font-size:18px;margin:1.4em 0 .5em}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.2em}
.article-body li{margin:.45em 0}
.article-body img{border-radius:12px;margin:1.2em 0;box-shadow:var(--sh)}
.article-body blockquote{
  margin:1.5em 0;padding:18px 24px;border-left:4px solid var(--cyan);
  background:rgba(0,209,178,.08);border-radius:0 12px 12px 0;color:#25443d;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body a{color:var(--teal);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--orange)}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body th{background:rgba(11,110,99,.08);color:var(--teal-deep);font-weight:700}
.article-body tbody tr:nth-child(even){background:rgba(221,229,223,.28)}
.article-body code{background:rgba(11,110,99,.1);padding:2px 6px;border-radius:6px;font-size:14.5px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.empty-state{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 32px;text-align:center;
}
.empty-state h2{font-size:24px;margin-bottom:12px}
.empty-state p{color:var(--ink2);margin-bottom:22px}
.btn-ghost{
  display:inline-block;padding:12px 26px;border-radius:var(--r-btn);
  border:1.5px solid var(--teal);color:var(--teal);font-weight:700;background:transparent;
}
.btn-ghost:hover{background:var(--teal);color:#fff}

/* ---------- sidebar ---------- */
.side{display:flex;flex-direction:column;gap:22px;position:sticky;top:96px}
.toc-card{padding:22px}
.toc-card h3{font-size:16px;letter-spacing:.6px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.toc-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--orange)}
.toc-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:2px;max-height:46vh;overflow:auto}
.toc-list a{
  display:block;padding:7px 10px;border-radius:8px;font-size:14px;color:var(--ink2);
  border-left:2px solid transparent;
}
.toc-list a:hover{background:rgba(0,209,178,.1);color:var(--teal)}
.toc-list a.is-active{color:var(--teal);font-weight:700;background:rgba(0,209,178,.12);border-left-color:var(--teal)}
.toc-list li.lv3 a{padding-left:24px;font-size:13.4px}
.side-card{padding:22px}
.side-card h3{font-size:16px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--teal)}
.side-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:14px}
.side-list li{display:flex;gap:12px;align-items:flex-start}
.side-list img{width:64px;height:48px;object-fit:cover;border-radius:8px;flex:0 0 64px}
.side-list a{font-size:14px;font-weight:600;color:var(--ink);line-height:1.5}
.side-list a:hover{color:var(--teal)}
.side-list small{display:block;color:var(--ink2);font-size:12.5px;margin-top:3px}
.back-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.back-links a{
  display:inline-block;padding:10px 20px;border-radius:var(--r-btn);
  border:1.5px solid var(--line);background:#fff;color:var(--ink);font-weight:600;font-size:14.5px;
}
.back-links a:hover{border-color:var(--teal);color:var(--teal);transform:translateY(-2px)}
.back-links a.primary{background:var(--teal);border-color:var(--teal);color:#fff}
.back-links a.primary:hover{background:var(--teal-deep);color:#fff}

/* ---------- sections ---------- */
.sec{padding:80px 0}
.sec-head{margin-bottom:36px;max-width:760px}
.sec-head .eyebrow{
  display:inline-block;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(0,209,178,.14);color:var(--teal);font-size:13px;font-weight:700;letter-spacing:1px;margin-bottom:14px;
}
.sec-head h2{font-size:clamp(24px,2.6vw,32px)}
.sec-head p{color:var(--ink2);margin-top:12px;font-size:16px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--sh);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:rgba(11,110,99,.4)}
.rec-card .thumb{position:relative;overflow:hidden}
.rec-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease}
.rec-card:hover .thumb img{transform:scale(1.04)}
.rec-card .badge-tag{
  position:absolute;left:14px;top:14px;padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(14,21,19,.78);color:#fff;font-size:12.5px;font-weight:600;backdrop-filter:blur(4px);
}
.rec-card .body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.rec-card h3{font-size:18.5px;line-height:1.5;margin-bottom:10px}
.rec-card h3 a{color:var(--ink)}
.rec-card h3 a:hover{color:var(--teal)}
.rec-card p{font-size:14.5px;color:var(--ink2);flex:1}
.rec-card .foot{
  margin-top:18px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink2);border-top:1px solid var(--line);padding-top:14px;
}
.rec-card .foot a{font-weight:700}

/* ---------- cta + form ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--dark),#0d3b35 65%,var(--teal-deep));
  color:#fff;border-radius:20px;padding:52px;display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:44px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,209,178,.35),transparent 68%);
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.6vw,30px)}
.cta-band p{color:rgba(255,255,255,.78);margin-top:14px;font-size:15.5px}
.cta-points{list-style:none;padding:0;margin-top:22px;display:flex;flex-direction:column;gap:10px}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:rgba(255,255,255,.9)}
.cta-points li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--cyan);flex:0 0 8px}
.form-card{background:#fff;border-radius:16px;padding:28px;box-shadow:0 18px 44px rgba(0,0,0,.22);position:relative;z-index:2}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:700;color:#26332f;margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#FBFCF9;color:var(--ink);outline:none;transition:border-color .2s,box-shadow .2s;
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--teal);box-shadow:0 0 0 3px rgba(11,110,99,.16);background:#fff;
}
.btn-main{
  width:100%;height:50px;border:0;border-radius:var(--r-btn);cursor:pointer;
  background:var(--orange);color:#fff;font-weight:700;font-size:16px;
  box-shadow:0 10px 22px rgba(255,107,53,.3);
  transition:transform .2s,background-color .2s,box-shadow .2s;
}
.btn-main:hover{background:var(--orange-deep);transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,107,53,.36)}
.btn-main:active{transform:scale(.98)}
.form-tip{margin-top:12px;font-size:12.8px;color:var(--ink2);text-align:center}
.form-msg{margin-top:12px;font-size:14px;font-weight:600;color:var(--teal);display:none}
.form-msg.show{display:block}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item.open{border-color:rgba(11,110,99,.45);box-shadow:var(--sh);border-left:4px solid var(--teal)}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;cursor:pointer;
  padding:20px 52px 20px 24px;font-size:18px;font-weight:700;color:var(--ink);position:relative;
}
.faq-q::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;line-height:24px;text-align:center;border-radius:50%;
  background:rgba(0,209,178,.16);color:var(--teal);font-size:18px;font-weight:700;transition:.25s;
}
.faq-item.open .faq-q::after{content:"−";background:var(--teal);color:#fff;transform:translateY(-50%) rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;background:rgba(0,209,178,.05)}
.faq-a p{padding:0 24px 20px;font-size:15px;color:#3f4f4a}
.faq-item.open .faq-a{max-height:340px}

/* ---------- footer ---------- */
.site-foot{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 26px;margin-top:8px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.foot-brand b{color:#fff;font-size:17px}
.foot-brand small{display:block;font-size:11.5px;color:rgba(255,255,255,.55);letter-spacing:1.2px}
.site-foot p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66)}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.5px}
.foot-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:11px}
.foot-col li{font-size:14px;color:rgba(255,255,255,.66)}
.foot-col a{color:rgba(255,255,255,.72)}
.foot-col a:hover{color:var(--cyan)}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
}
.foot-bottom a{color:rgba(255,255,255,.72)}
.foot-bottom a:hover{color:var(--cyan)}

.to-top{
  position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;
  border:0;background:var(--teal);color:#fff;font-size:18px;cursor:pointer;
  box-shadow:0 10px 24px rgba(11,110,99,.34);opacity:0;pointer-events:none;transition:.28s;z-index:900;
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{background:var(--teal-deep);transform:translateY(-3px)}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .art-layout{grid-template-columns:minmax(0,1fr) 290px;gap:28px}
  .cta-band{padding:44px;gap:32px}
}
@media (max-width:991.98px){
  .nav-toggle{display:flex}
  .nav-main{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:12px 20px 20px;box-shadow:0 18px 32px rgba(11,110,99,.12);
    display:none;
  }
  .nav-main.open{display:flex}
  .nav-main ul{flex-direction:column;align-items:stretch;gap:4px}
  .nav-main ul a{padding:13px 14px;border-radius:10px}
  .nav-main ul a.active::after{display:none}
  .nav-cta{text-align:center;margin-top:12px}
  .art-layout{grid-template-columns:minmax(0,1fr);padding-top:40px}
  .side{position:static;order:2}
  .article-body{max-width:100%;font-size:16.5px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:38px 28px}
  .faq-grid{grid-template-columns:minmax(0,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .sec{padding:60px 0}
}
@media (max-width:767.98px){
  .brand-text b{font-size:16px}
  .art-hero{padding:40px 0 36px}
  .article-body h2{font-size:23px}
  .article-body h3{font-size:19.5px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .sec{padding:48px 0}
  .sec-head{margin-bottom:26px}
  .rec-card .body{padding:18px 20px 20px}
}
@media (max-width:575.98px){
  .wrap{width:min(100% - 28px,var(--wrap))}
  .brand-text small{display:none}
  .art-hero h1{font-size:26px}
  .post-meta span{font-size:12px;padding:6px 11px}
  .cta-band{padding:28px 20px;border-radius:16px}
  .form-card{padding:20px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{flex-direction:column}
  .lead-box{padding:16px 18px}
}

/* roulang page: category1 */
:root{
  --brand:#0B6E63;
  --brand-deep:#08544B;
  --brand-cyan:#00D1B2;
  --action:#FF6B35;
  --action-dark:#E4541F;
  --bg:#F6F7F2;
  --dark:#0E1513;
  --line:#DDE5DF;
  --ink:#17201D;
  --muted:#5B6964;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh:0 8px 24px rgba(11,110,99,.08);
  --sh-h:0 12px 32px rgba(11,110,99,.14);
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
  --bs-body-color:var(--ink);
  --bs-border-color:var(--line);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background .2s ease;}
a:hover{color:var(--brand-cyan);}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.28;letter-spacing:-.2px;}
p{margin:0 0 1.2em;}
ul{margin:0;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(0,209,178,.5);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 22px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 导航 ============ */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(246,247,242,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-head.is-stuck{box-shadow:0 10px 26px rgba(11,110,99,.10);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:22px;height:78px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(140deg,var(--brand) 0%,var(--brand-cyan) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(11,110,99,.28);
}
.brand-mark i{width:12px;height:12px;border-radius:50%;background:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.28);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:17.5px;font-weight:800;letter-spacing:.2px;}
.brand-text small{font-size:11.5px;color:var(--muted);letter-spacing:1.4px;}
.nav-main{display:flex;align-items:center;gap:22px;}
.nav-main ul{display:flex;align-items:center;gap:4px;list-style:none;}
.nav-main ul a{
  display:block;position:relative;
  padding:10px 15px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--ink);
}
.nav-main ul a:hover{background:rgba(0,209,178,.12);color:var(--brand);}
.nav-main ul a.active{background:rgba(0,209,178,.16);color:var(--brand-deep);}
.nav-main ul a.active::after{
  content:"";position:absolute;left:15px;right:15px;bottom:5px;height:2px;
  border-radius:2px;background:var(--brand-cyan);
}
.nav-cta{
  display:inline-block;padding:11px 22px;border-radius:var(--r-btn);
  background:var(--action);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 8px 18px rgba(255,107,53,.28);
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:var(--action-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 24px rgba(255,107,53,.34);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:12px;padding:11px 10px;cursor:pointer;flex-direction:column;justify-content:space-between;
}
.nav-toggle span{display:block;height:2px;background:var(--brand);border-radius:2px;transition:.25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(9px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-9px) rotate(-45deg);}

/* ============ 通用区块 ============ */
.sec{padding:88px 0;}
.sec-tight{padding:64px 0;}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{font-size:31px;margin-bottom:14px;}
.sec-head p{color:var(--muted);margin:0;font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.2px;color:var(--brand);
  background:rgba(0,209,178,.13);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--action);}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background:var(--dark) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(14,21,19,.86) 0%,rgba(14,21,19,.62) 52%,rgba(11,110,99,.52) 100%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;padding:84px 0 78px;}
.hero .chip-line{display:inline-flex;align-items:center;gap:9px;background:rgba(0,209,178,.16);border:1px solid rgba(0,209,178,.4);color:#8CF3E2;font-size:13.5px;font-weight:700;padding:7px 16px;border-radius:999px;margin-bottom:22px;}
.hero h1{font-size:44px;color:#fff;margin-bottom:20px;letter-spacing:-.6px;}
.hero h1 span{display:block;margin-top:12px;font-size:15px;font-weight:600;letter-spacing:2px;color:#9FE9DC;}
.hero-sub{color:#D5E3DF;font-size:17.5px;max-width:600px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.btn-main{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--action);color:#fff;font-weight:700;font-size:16px;
  padding:14px 28px;border-radius:var(--r-btn);border:1px solid transparent;
  box-shadow:0 12px 26px rgba(255,107,53,.32);
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.btn-main:hover{background:var(--action-dark);color:#fff;transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,107,53,.38);}
.btn-main:active{transform:scale(.98);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  background:transparent;color:#EAF3F0;font-weight:700;font-size:16px;
  padding:14px 26px;border-radius:var(--r-btn);border:1.5px solid rgba(234,243,240,.55);
  transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.btn-ghost:hover{border-color:var(--brand-cyan);background:rgba(0,209,178,.14);color:#fff;transform:translateY(-2px);}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;color:#9DB3AD;font-size:13.5px;}
.hero-meta b{color:#fff;font-weight:700;}
.hero-panel{
  background:rgba(9,17,15,.78);
  border:1px solid rgba(0,209,178,.26);
  border-radius:18px;padding:26px 26px 20px;
  box-shadow:0 24px 50px rgba(0,0,0,.34);
  backdrop-filter:blur(4px);
}
.hero-panel h2{font-size:16px;color:#fff;margin-bottom:6px;}
.hero-panel .panel-note{font-size:12.8px;color:#8FA6A0;margin-bottom:18px;}
.today-list{list-style:none;}
.today-list li{display:flex;gap:14px;align-items:flex-start;padding:13px 0;border-top:1px solid rgba(255,255,255,.09);}
.today-list li:first-child{border-top:0;}
.today-list .t{font-variant-numeric:tabular-nums;font-weight:800;color:var(--brand-cyan);font-size:14.5px;min-width:50px;}
.today-list .d{color:#D9E6E2;font-size:14.5px;line-height:1.65;}
.today-list .d em{display:block;font-style:normal;color:#8FA6A0;font-size:12.8px;margin-top:2px;}

/* ============ 筛选 + 卡片 ============ */
.chip-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.chip{
  border:1px solid var(--line);background:#fff;color:var(--ink);
  padding:9px 19px;border-radius:999px;font-size:14.5px;font-weight:700;cursor:pointer;
  transition:.22s ease;
}
.chip:hover{border-color:var(--brand-cyan);color:var(--brand);}
.chip.active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(11,110,99,.22);}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.ncard{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh);display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.ncard:hover{transform:translateY(-2px);box-shadow:var(--sh-h);border-color:var(--brand-cyan);}
.ncard img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.ncard-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.ncard-top{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin-bottom:12px;}
.tag{display:inline-block;font-size:12.5px;font-weight:700;padding:4px 12px;border-radius:999px;letter-spacing:.3px;}
.tag-g{background:rgba(0,209,178,.16);color:var(--brand-deep);}
.tag-o{background:rgba(255,107,53,.15);color:#C6491A;}
.tag-n{background:#EDF1EE;color:var(--muted);}
.ncard h3{font-size:19px;margin-bottom:10px;line-height:1.45;}
.ncard p{font-size:14.8px;color:var(--muted);margin-bottom:16px;}
.ncard .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;}
.ncard .foot a{font-weight:700;font-size:13.5px;}
.is-hidden{display:none;}
.empty-tip{display:none;padding:34px 26px;border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;color:var(--muted);text-align:center;font-size:15px;}

/* ============ 深色时间线 ============ */
.band-dark{background:var(--dark);color:#DCE9E5;}
.band-dark .sec-head h2{color:#fff;}
.band-dark .sec-head p{color:#93A9A3;}
.band-dark .eyebrow{background:rgba(0,209,178,.18);color:#7FEBD8;}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{border-top:2px solid rgba(0,209,178,.42);padding-top:22px;}
.step .num{font-size:15px;font-weight:800;color:var(--brand-cyan);letter-spacing:1.5px;margin-bottom:12px;}
.step h3{font-size:19px;color:#fff;margin-bottom:10px;}
.step p{font-size:14.6px;color:#93A9A3;margin:0;}

/* ============ KPI ============ */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.kpi{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 26px 24px;box-shadow:var(--sh);
  transition:transform .22s ease,box-shadow .22s ease;
}
.kpi:hover{transform:translateY(-2px);box-shadow:var(--sh-h);}
.kpi .v{font-size:38px;font-weight:800;color:var(--brand);line-height:1.1;letter-spacing:-1px;}
.kpi .v i{font-size:19px;font-style:normal;font-weight:700;margin-left:3px;}
.kpi .l{font-size:13.5px;color:var(--muted);margin-top:8px;}
.kpi .b{display:inline-block;margin-top:14px;font-size:12.5px;font-weight:700;padding:4px 11px;border-radius:999px;background:rgba(255,107,53,.14);color:#C6491A;}

/* ============ 首日清单 ============ */
.check-wrap{display:grid;grid-template-columns:.95fr 1.05fr;gap:48px;align-items:center;}
.check-wrap img{border-radius:var(--r-img);box-shadow:var(--sh);aspect-ratio:4/3;object-fit:cover;width:100%;}
.check-list{list-style:none;counter-reset:c;}
.check-list li{position:relative;padding:18px 0 18px 58px;border-bottom:1px solid var(--line);}
.check-list li:last-child{border-bottom:0;}
.check-list li::before{
  counter-increment:c;content:counter(c,decimal-leading-zero);
  position:absolute;left:0;top:18px;
  width:38px;height:38px;border-radius:11px;
  background:rgba(0,209,178,.15);color:var(--brand-deep);
  font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center;
}
.check-list b{display:block;font-size:17px;margin-bottom:5px;}
.check-list span{font-size:14.8px;color:var(--muted);}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;align-items:start;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;}
.faq-item:hover{border-color:var(--brand-cyan);}
.faq-q{
  width:100%;text-align:left;background:none;border:0;
  padding:20px 54px 20px 24px;position:relative;cursor:pointer;
  font-size:18px;font-weight:700;color:var(--ink);line-height:1.5;
}
.faq-q::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:24px;font-weight:600;color:var(--brand);transition:transform .22s ease;
}
.faq-q[aria-expanded="true"]{color:var(--brand-deep);}
.faq-q[aria-expanded="true"]::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.faq-a{padding:0 24px 22px;font-size:15px;color:var(--muted);border-left:3px solid var(--brand-cyan);margin-left:0;background:rgba(0,209,178,.05);}
.faq-a p{margin:0;}
.faq-a .faq-pad{padding-top:14px;}

/* ============ CTA 表单 ============ */
.cta-band{background:linear-gradient(120deg,var(--brand-deep) 0%,var(--brand) 62%,#0E7E6E 100%);color:#fff;}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start;}
.cta-band .eyebrow{background:rgba(255,255,255,.16);color:#CFF6EC;}
.cta-band h2{color:#fff;font-size:31px;margin-bottom:16px;}
.cta-band p{color:#D3F0E8;}
.cta-points{list-style:none;margin-top:26px;}
.cta-points li{display:flex;gap:12px;align-items:flex-start;padding:11px 0;font-size:15.2px;color:#E4F7F1;}
.cta-points i{color:var(--brand-cyan);margin-top:6px;}
.form-card{background:#fff;border-radius:18px;padding:30px 30px 32px;box-shadow:0 26px 54px rgba(4,40,34,.28);}
.form-card h3{font-size:20px;margin-bottom:6px;}
.form-card .hint{font-size:13.8px;color:var(--muted);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.8px;font-weight:700;margin-bottom:7px;color:var(--ink);}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 15px;font-size:15px;color:var(--ink);background:#FBFCFA;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input,.field select{height:48px;}
.field textarea{padding:13px 15px;min-height:104px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-cyan);box-shadow:0 0 0 3px rgba(0,209,178,.22);background:#fff;
}
.form-submit{
  width:100%;border:0;border-radius:var(--r-btn);background:var(--action);color:#fff;
  font-size:16.5px;font-weight:700;height:52px;cursor:pointer;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
  box-shadow:0 12px 26px rgba(255,107,53,.3);
}
.form-submit:hover{background:var(--action-dark);transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,107,53,.36);}
.form-submit:active{transform:scale(.98);}
.form-tip{margin-top:13px;font-size:13px;color:var(--muted);}
.form-msg{display:none;margin-top:13px;font-size:14px;font-weight:700;color:var(--brand);}
.form-msg.show{display:block;}

/* ============ 面包屑 ============ */
.crumb{font-size:13.5px;color:var(--muted);padding:18px 0 0;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb span{margin:0 7px;opacity:.65;}

/* ============ 页脚 ============ */
.site-foot{background:var(--dark);color:#B9CCC7;padding:70px 0 26px;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:38px;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.foot-brand span{display:flex;flex-direction:column;line-height:1.2;}
.foot-brand b{color:#fff;font-size:17px;font-weight:800;}
.foot-brand small{font-size:11.5px;color:#7E948E;letter-spacing:1.3px;}
.site-foot p{font-size:14.3px;color:#9BB0AA;margin:0;max-width:380px;}
.foot-col h4{color:#fff;font-size:15.5px;margin-bottom:16px;font-weight:700;}
.foot-col ul{list-style:none;}
.foot-col li{font-size:14.3px;color:#9BB0AA;padding:6px 0;}
.foot-col a{color:#9BB0AA;}
.foot-col a:hover{color:var(--brand-cyan);}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7E948E;
}
.foot-bottom a{color:#9BB0AA;}
.foot-bottom a:hover{color:var(--brand-cyan);}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .hero h1{font-size:40px;}
  .card-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:992px){
  .nav-toggle{display:flex;}
  .nav-main{
    position:absolute;left:0;right:0;top:78px;display:none;
    flex-direction:column;align-items:stretch;gap:14px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:16px 22px 22px;box-shadow:0 20px 34px rgba(11,110,99,.14);
  }
  .nav-main.open{display:flex;}
  .nav-main ul{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-main ul a{padding:12px 14px;}
  .nav-main ul a.active::after{display:none;}
  .nav-cta{text-align:center;}
  .hero-inner{grid-template-columns:1fr;gap:34px;padding:64px 0 60px;}
  .hero h1{font-size:34px;}
  .sec{padding:64px 0;}
  .sec-head h2{font-size:27px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .check-wrap{grid-template-columns:1fr;gap:32px;}
  .faq-grid{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;gap:34px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .hero-actions{gap:12px;}
  .btn-main,.btn-ghost{padding:13px 22px;font-size:15.2px;}
  .sec{padding:56px 0;}
  .sec-head h2{font-size:24px;}
  .card-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .kpi-grid{grid-template-columns:1fr;}
  .kpi .v{font-size:34px;}
  .cta-band h2{font-size:25px;}
  .form-card{padding:24px 20px 26px;}
}
@media (max-width:520px){
  .wrap{padding:0 16px;}
  .brand-text b{font-size:15.5px;}
  .brand-text small{font-size:10.5px;letter-spacing:.8px;}
  .hero h1{font-size:26px;}
  .hero-meta{gap:14px;}
  .hero-panel{padding:20px 18px 16px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;}
  .faq-q{font-size:16.5px;padding:18px 48px 18px 18px;}
}

/* roulang page: category2 */
:root{
  --deep:#0B6E63;
  --deep-2:#0a5c53;
  --aqua:#00D1B2;
  --orange:#FF6B35;
  --orange-2:#e85a26;
  --bg:#F6F7F2;
  --dark:#0E1513;
  --dark-2:#16211d;
  --line:#DDE5DF;
  --ink:#17201D;
  --ink2:#5B6964;
  --white:#ffffff;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh:0 8px 24px rgba(11,110,99,.08);
  --sh-hover:0 12px 32px rgba(11,110,99,.14);
  --sec:88px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--deep);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--aqua);}
button,input,select,textarea{font-family:inherit;font-size:1rem;}
h1,h2,h3,h4{color:var(--ink);font-weight:800;line-height:1.32;margin:0;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:3px solid rgba(0,209,178,.55);outline-offset:2px;border-radius:6px;}

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

/* ---------- 头部导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(246,247,242,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-head.is-scrolled{box-shadow:0 8px 26px rgba(11,110,99,.10);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:none;
  background:linear-gradient(135deg,var(--deep) 0%,#12907f 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(11,110,99,.28);
}
.brand-mark i{
  width:14px;height:14px;border-radius:4px;background:var(--aqua);
  display:block;transform:rotate(45deg);
  box-shadow:0 0 0 3px rgba(0,209,178,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:19px;font-weight:800;letter-spacing:.2px;}
.brand-text small{font-size:12.5px;color:var(--ink2);letter-spacing:.4px;}
.nav-main{display:flex;align-items:center;gap:22px;}
.nav-main ul{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0;}
.nav-main ul a{
  display:block;padding:9px 16px;border-radius:var(--r-pill);
  color:var(--ink2);font-size:15.5px;font-weight:600;
  border-bottom:2px solid transparent;transition:all .2s ease;
}
.nav-main ul a:hover{color:var(--deep);background:#eaf2ef;}
.nav-main ul a.active{
  color:var(--deep);background:#e3f3ef;
  border-bottom-color:var(--aqua);font-weight:800;
}
.nav-cta{
  display:inline-block;padding:11px 22px;border-radius:var(--r-btn);
  background:var(--orange);color:#fff;font-weight:700;font-size:15.5px;
  box-shadow:0 8px 20px rgba(255,107,53,.28);
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.nav-cta:hover{background:var(--orange-2);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,107,53,.34);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:12px;padding:0;position:relative;
}
.nav-toggle span{
  display:block;width:20px;height:2px;background:var(--deep);
  margin:4px auto;border-radius:2px;transition:.25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 面包屑 + 窄幅 Hero ---------- */
.crumb{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink2);padding:26px 0 18px;}
.crumb a{color:var(--ink2);}
.crumb a:hover{color:var(--deep);}
.crumb span{color:#b6c2bc;}
.crumb em{font-style:normal;color:var(--deep);font-weight:700;}

.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#0E1513 0%,#122622 100%);
  color:#fff;border-radius:0;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.32;filter:saturate(1.05);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,21,19,.88) 0%,rgba(14,21,19,.62) 58%,rgba(14,21,19,.35) 100%);
}
.page-hero .wrap{position:relative;z-index:2;padding-top:56px;padding-bottom:60px;}
.hero-grid{display:grid;grid-template-columns:1.35fr .9fr;gap:44px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(0,209,178,.16);color:var(--aqua);
  font-size:13.5px;font-weight:700;letter-spacing:.6px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--aqua);}
.page-hero h1{
  color:#fff;font-size:44px;letter-spacing:.2px;margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--aqua);}
.hero-lead{color:rgba(255,255,255,.82);font-size:17px;max-width:660px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn-main{
  display:inline-block;padding:14px 28px;border-radius:var(--r-btn);
  background:var(--orange);color:#fff;font-weight:700;border:none;
  box-shadow:0 10px 24px rgba(255,107,53,.3);
  transition:transform .2s ease,background .2s ease,box-shadow .2s ease;
}
.btn-main:hover{background:var(--orange-2);color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,107,53,.38);}
.btn-main:active{transform:scale(.98);}
.btn-line{
  display:inline-block;padding:14px 28px;border-radius:var(--r-btn);
  border:1.5px solid rgba(0,209,178,.7);color:#eafaf6;font-weight:700;background:transparent;
  transition:all .2s ease;
}
.btn-line:hover{background:rgba(0,209,178,.14);border-color:var(--aqua);color:#fff;transform:translateY(-2px);}
.hero-mini{display:grid;gap:14px;}
.mini-card{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-card);padding:18px 20px;backdrop-filter:blur(4px);
}
.mini-card b{
  display:block;font-size:30px;font-weight:800;color:var(--aqua);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.mini-card span{font-size:13.5px;color:rgba(255,255,255,.72);}

/* ---------- 通用板块 ---------- */
.sec{padding:var(--sec) 0;}
.sec.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{font-size:31px;margin-bottom:14px;}
.sec-head h2 em{font-style:normal;color:var(--deep);}
.sec-head p{color:var(--ink2);font-size:16.5px;}
.tagline{
  display:inline-block;font-size:13.5px;font-weight:700;color:var(--deep);
  background:#e3f3ef;border-radius:var(--r-pill);padding:5px 14px;margin-bottom:14px;letter-spacing:.5px;
}

/* ---------- 时间轴 + 粘性摘要卡 ---------- */
.flow-layout{display:grid;grid-template-columns:1.65fr .85fr;gap:36px;align-items:start;}
.timeline{position:relative;padding-left:8px;}
.timeline::before{
  content:"";position:absolute;left:22px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--aqua),rgba(0,209,178,.15));
}
.tl-item{position:relative;padding-left:64px;padding-bottom:34px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:14px;top:22px;width:18px;height:18px;border-radius:50%;
  background:#fff;border:3px solid var(--aqua);
  box-shadow:0 0 0 5px rgba(0,209,178,.14);z-index:2;
}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px 26px;box-shadow:var(--sh);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);border-color:#b8e2d8;}
.tl-top{display:flex;align-items:center;gap:14px;margin-bottom:10px;flex-wrap:wrap;}
.tl-num{
  font-variant-numeric:tabular-nums;font-weight:800;font-size:14px;
  color:#fff;background:var(--deep);border-radius:8px;padding:3px 10px;letter-spacing:1px;
}
.tl-top h3{font-size:22px;}
.tl-card p{color:var(--ink2);font-size:15.5px;margin-bottom:14px;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.tag{
  display:inline-block;font-size:13px;font-weight:600;color:var(--deep);
  background:#eef6f3;border:1px solid #d5e9e2;border-radius:var(--r-pill);padding:3px 12px;
}
.tag.warn{color:#b8471f;background:#fff0e9;border-color:#ffd8c6;}
.link-more{font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px;}
.link-more::after{content:"→";transition:transform .2s ease;}
.link-more:hover::after{transform:translateX(4px);}

.sticky-card{
  position:sticky;top:100px;
  background:var(--dark);color:#fff;border-radius:var(--r-card);
  padding:28px 26px;box-shadow:0 14px 34px rgba(14,21,19,.22);
}
.sticky-card h3{color:#fff;font-size:20px;margin-bottom:8px;}
.sticky-card .st-desc{color:rgba(255,255,255,.68);font-size:14.5px;margin-bottom:20px;}
.st-list{list-style:none;margin:0 0 20px;padding:0;}
.st-list li{
  display:flex;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.16);font-size:14.5px;
}
.st-list li:last-child{border-bottom:none;}
.st-list span{color:rgba(255,255,255,.7);}
.st-list b{color:var(--aqua);font-variant-numeric:tabular-nums;}
.st-check{list-style:none;margin:0 0 22px;padding:0;}
.st-check li{
  position:relative;padding-left:24px;margin-bottom:10px;
  font-size:14.5px;color:rgba(255,255,255,.84);
}
.st-check li::before{
  content:"";position:absolute;left:0;top:9px;width:12px;height:12px;
  border-radius:4px;border:2px solid var(--aqua);
}
.sticky-card .btn-main{width:100%;text-align:center;padding:13px 20px;}
.st-note{font-size:13px;color:rgba(255,255,255,.55);margin-top:12px;margin-bottom:0;}

/* ---------- 风险场景交替长条 ---------- */
.scene{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  padding:34px 0;
}
.scene + .scene{border-top:1px solid var(--line);}
.scene.reverse .scene-media{order:2;}
.scene-media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh);}
.scene-media img{width:100%;height:300px;object-fit:cover;border-radius:var(--r-img);transition:transform .5s ease;}
.scene-media:hover img{transform:scale(1.04);}
.scene-media .media-badge{
  position:absolute;left:16px;top:16px;background:rgba(14,21,19,.78);color:#fff;
  font-size:13px;font-weight:700;padding:5px 13px;border-radius:var(--r-pill);
}
.scene-body h3{font-size:24px;margin-bottom:12px;}
.scene-body p{color:var(--ink2);font-size:15.8px;}
.scene-points{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:8px;}
.scene-points li{position:relative;padding-left:24px;font-size:15px;color:var(--ink);}
.scene-points li::before{
  content:"";position:absolute;left:0;top:8px;width:10px;height:10px;border-radius:3px;
  background:var(--aqua);
}

/* ---------- 数据带 ---------- */
.dark-band{
  background:linear-gradient(135deg,#0E1513 0%,#123028 100%);
  color:#fff;padding:72px 0;
}
.dark-band h2{color:#fff;font-size:30px;margin-bottom:14px;}
.dark-band .band-desc{color:rgba(255,255,255,.72);max-width:700px;margin-bottom:38px;}
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.kpi{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.13);
  border-radius:var(--r-card);padding:24px 22px;
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.kpi:hover{transform:translateY(-3px);border-color:rgba(0,209,178,.5);background:rgba(0,209,178,.08);}
.kpi b{
  display:block;font-size:38px;font-weight:800;color:var(--aqua);
  font-variant-numeric:tabular-nums;line-height:1.15;margin-bottom:6px;
}
.kpi b small{font-size:18px;font-weight:700;}
.kpi span{display:block;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:10px;}
.kpi .trend{
  display:inline-block;font-size:12.5px;font-weight:700;border-radius:var(--r-pill);
  padding:2px 11px;background:rgba(0,209,178,.18);color:var(--aqua);
}
.kpi .trend.orange{background:rgba(255,107,53,.2);color:#ffb191;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr 1fr;gap:26px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--line);
  border-radius:var(--r-card);margin-bottom:16px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#b8e2d8;border-left-color:var(--aqua);box-shadow:var(--sh);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;cursor:pointer;
  padding:20px 22px;font-size:19px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq-q .sign{
  flex:none;width:26px;height:26px;border-radius:50%;position:relative;
  background:#e3f3ef;transition:background .2s ease,transform .2s ease;
}
.faq-q .sign::before,
.faq-q .sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--deep);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .sign::before{width:12px;height:2px;}
.faq-q .sign::after{width:2px;height:12px;transition:opacity .2s ease;}
.faq-q[aria-expanded="true"]{color:var(--deep);}
.faq-q[aria-expanded="true"] .sign{background:var(--aqua);transform:rotate(180deg);}
.faq-q[aria-expanded="true"] .sign::before,
.faq-q[aria-expanded="true"] .sign::after{background:#fff;}
.faq-q[aria-expanded="true"] .sign::after{opacity:0;}
.faq-a{
  padding:0 22px 22px;color:var(--ink2);font-size:15.3px;
}
.faq-item.open{background:#f4fbf8;border-left-color:var(--aqua);}

/* ---------- CTA + 表单 ---------- */
.cta-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:44px;box-shadow:var(--sh);
}
.cta-info h2{font-size:30px;margin-bottom:14px;}
.cta-info p{color:var(--ink2);font-size:15.8px;}
.cta-list{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:12px;}
.cta-list li{
  display:flex;gap:12px;align-items:flex-start;font-size:15.3px;color:var(--ink);
}
.cta-list li i{
  flex:none;width:22px;height:22px;border-radius:7px;background:#e3f3ef;
  display:flex;align-items:center;justify-content:center;color:var(--deep);
  font-style:normal;font-weight:800;font-size:13px;margin-top:4px;
}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:14.5px;font-weight:700;margin-bottom:8px;color:var(--ink);}
.form-row input,
.form-row select,
.form-row textarea{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-btn);
  padding:0 14px;background:#fbfcfa;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease;
}
.form-row textarea{height:auto;min-height:118px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{
  outline:none;border-color:var(--aqua);background:#fff;
  box-shadow:0 0 0 3px rgba(0,209,178,.22);
}
.form-tip{font-size:13px;color:var(--ink2);margin-top:12px;}
.form-tip.ok{color:var(--deep);font-weight:700;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--dark);color:rgba(255,255,255,.76);padding:62px 0 26px;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.foot-brand .brand-mark{background:linear-gradient(135deg,#12a08f,var(--aqua));}
.foot-brand b{color:#fff;font-size:18px;display:block;}
.foot-brand small{color:rgba(255,255,255,.55);font-size:12.5px;}
.site-foot p{font-size:14.5px;color:rgba(255,255,255,.66);}
.foot-col h4{color:#fff;font-size:16px;margin-bottom:16px;}
.foot-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.foot-col ul li{font-size:14.5px;}
.foot-col ul a{color:rgba(255,255,255,.72);}
.foot-col ul a:hover{color:var(--aqua);}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.foot-bottom a{color:var(--aqua);}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .page-hero h1{font-size:38px;}
  .hero-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:992px){
  :root{--sec:64px;}
  .nav-toggle{display:block;}
  .nav-main{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:8px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:16px 24px 22px;box-shadow:0 18px 30px rgba(11,110,99,.12);
    display:none;
  }
  .nav-main.open{display:flex;}
  .nav-main ul{flex-direction:column;align-items:stretch;gap:4px;}
  .nav-main ul a{padding:12px 14px;border-radius:10px;border-bottom:none;}
  .nav-main ul a.active{background:#e3f3ef;border-bottom:none;}
  .nav-cta{text-align:center;margin-top:8px;}
  .hero-grid{grid-template-columns:1fr;gap:26px;}
  .page-hero h1{font-size:32px;}
  .hero-mini{grid-template-columns:repeat(3,1fr);display:grid;gap:12px;}
  .flow-layout{grid-template-columns:1fr;}
  .sticky-card{position:static;}
  .scene{grid-template-columns:1fr;gap:22px;}
  .scene.reverse .scene-media{order:0;}
  .scene-media img{height:240px;}
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .faq-layout{grid-template-columns:1fr;}
  .cta-wrap{grid-template-columns:1fr;padding:32px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .wrap{padding:0 18px;}
  .sec{padding:52px 0;}
  .page-hero h1{font-size:29px;}
  .sec-head h2{font-size:25px;}
  .hero-mini{grid-template-columns:1fr 1fr;}
  .mini-card:nth-child(3){grid-column:span 2;}
  .tl-item{padding-left:52px;}
  .timeline::before{left:17px;}
  .tl-dot{left:9px;width:16px;height:16px;}
  .tl-top h3{font-size:20px;}
  .kpi b{font-size:32px;}
  .faq-q{font-size:17px;padding:17px 18px;}
  .faq-a{padding:0 18px 18px;}
  .form-grid{grid-template-columns:1fr;}
  .dark-band{padding:56px 0;}
  .dark-band h2{font-size:25px;}
}
@media (max-width:576px){
  .brand-text b{font-size:17px;}
  .brand-text small{display:none;}
  .page-hero .wrap{padding-top:38px;padding-bottom:44px;}
  .page-hero h1{font-size:26px;}
  .hero-mini{grid-template-columns:1fr;}
  .mini-card:nth-child(3){grid-column:span 1;}
  .kpi-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .btn-main,.btn-line{width:100%;text-align:center;}
  .hero-actions{flex-direction:column;}
  .cta-wrap{padding:24px 20px;}
}