/* roulang page: index */
:root{
  --c-primary:#0F4C46;
  --c-primary-900:#0B3A35;
  --c-primary-100:#DDEBE8;
  --c-accent:#E2733A;
  --c-accent-700:#C95F2A;
  --c-ink:#17201E;
  --c-body:#43514D;
  --c-muted:#7C8985;
  --c-line:#E3E8E6;
  --c-bg:#FAFAF7;
  --c-surface:#FFFFFF;
  --c-disabled-bg:#C8CFCC;
  --c-disabled-fg:#8A9491;
  --r-card:12px;
  --r-btn:8px;
  --r-input:8px;
  --r-badge:4px;
  --sh-1:0 1px 2px rgba(23,32,30,.06);
  --sh-2:0 8px 24px rgba(23,32,30,.10);
  --font-cn:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::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-body);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .16s ease-out,background-color .16s ease-out,border-color .16s ease-out;}
a:hover{color:var(--c-primary-900);}
h1,h2,h3,h4{color:var(--c-ink);margin:0 0 12px;font-weight:700;letter-spacing:.2px;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0 0 16px;}
ul,ol{margin:0 0 16px;padding-left:22px;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head .eyebrow{display:block;font-size:12px;letter-spacing:2px;color:var(--c-muted);text-transform:uppercase;margin-bottom:10px;}
.section-head h2{margin-bottom:8px;}
.section-head .lead{font-size:15px;color:var(--c-muted);margin:0;max-width:620px;}
.text-link{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;border-bottom:1px solid transparent;padding-bottom:2px;}
.text-link:hover{border-bottom-color:var(--c-primary);}
.text-link i{font-size:12px;transition:transform .16s ease-out;}
.text-link:hover i{transform:translateX(3px);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:all .16s ease-out;white-space:nowrap;}
.btn:disabled{background:var(--c-disabled-bg);color:var(--c-disabled-fg);border-color:var(--c-disabled-bg);cursor:not-allowed;}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--c-accent-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{background:var(--c-accent-700);transform:translateY(0);}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-100);color:var(--c-primary-900);}
.btn-solid{background:var(--c-primary);color:#fff;}
.btn-solid:hover{background:var(--c-primary-900);color:#fff;}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 8px;height:40px;}
.btn-ghost:hover{color:var(--c-primary-900);text-decoration:underline;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;line-height:1;padding:8px 12px;border-radius:var(--r-badge);background:var(--c-primary-100);color:var(--c-primary);border:1px solid rgba(15,76,70,.12);}
.badge i{font-size:11px;}
.chip{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;border-radius:999px;border:1px solid var(--c-line);background:var(--c-surface);font-size:13px;color:var(--c-body);transition:all .16s ease-out;}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-100);}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-badge);background:var(--c-primary-100);color:var(--c-primary);font-size:12px;font-weight:600;}

/* 头部 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(250,250,247,.92);backdrop-filter:blur(8px);transition:box-shadow .18s ease-out,background-color .18s ease-out;}
.site-header.is-scrolled{background:rgba(250,250,247,.96);box-shadow:var(--sh-1);border-bottom:1px solid var(--c-line);}
.brandbar-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--c-ink);}
.brand:hover{color:var(--c-ink);}
.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;letter-spacing:.5px;flex:0 0 auto;box-shadow:var(--sh-1);}
.brand-text strong{display:block;font-size:17px;line-height:1.2;color:var(--c-ink);font-weight:700;}
.brand-text em{display:block;font-style:normal;font-size:12px;color:var(--c-muted);letter-spacing:.6px;margin-top:3px;}
.brand-actions{display:flex;align-items:center;gap:10px;}
.menu-toggle{display:none;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:var(--c-surface);font-size:14px;color:var(--c-body);}
.chipbar{border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);background:rgba(255,255,255,.6);}
.tabs.nav-chips{display:flex;align-items:center;gap:8px;margin:0;padding:10px 0;border:0;background:transparent;list-style:none;overflow-x:auto;scrollbar-width:none;}
.tabs.nav-chips::-webkit-scrollbar{display:none;}
.tabs.nav-chips .tabs-title{float:none;margin:0;flex:0 0 auto;}
.tabs.nav-chips .tabs-title>a{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 18px;border-radius:999px;border:1px solid var(--c-line);background:transparent;color:var(--c-body);font-size:14px;font-weight:600;line-height:1;}
.tabs.nav-chips .tabs-title>a:hover{background:var(--c-primary-100);color:var(--c-primary);border-color:var(--c-primary-100);}
.tabs.nav-chips .tabs-title.is-active>a{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.mobile-panel{display:none;border-bottom:1px solid var(--c-line);background:var(--c-surface);padding:14px 0 18px;}
.mobile-panel.is-open{display:block;}
.mobile-panel a{display:block;padding:12px 0;font-size:15px;font-weight:600;color:var(--c-body);border-bottom:1px dashed var(--c-line);}
.mobile-panel a:last-child{border-bottom:0;}
.mobile-panel a.is-active{color:var(--c-primary);}

/* Hero */
.hero{padding:72px 0 88px;position:relative;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(221,235,232,.6) 0%,rgba(250,250,247,0) 62%);pointer-events:none;}
.hero-inner{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:48px;}
.hero-copy{flex:1 1 520px;min-width:0;}
.hero-figure{flex:1 1 360px;min-width:0;}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--c-primary);background:var(--c-surface);border:1px solid var(--c-line);border-radius:999px;padding:8px 14px;margin-bottom:20px;box-shadow:var(--sh-1);}
.hero-kicker i{color:var(--c-accent);}
.hero h1{font-size:40px;line-height:1.25;margin-bottom:18px;}
.hero h1 .mark{color:var(--c-primary);box-shadow:inset 0 -12px 0 rgba(226,115,58,.16);}
.hero .sub{font-size:18px;color:var(--c-body);margin-bottom:16px;font-weight:600;}
.hero .desc{font-size:15px;color:var(--c-muted);max-width:560px;margin-bottom:28px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.hero-figure .frame{position:relative;border-radius:16px;}
.hero-figure .frame::after{content:"";position:absolute;inset:0;transform:translate(12px,12px);border:1px solid var(--c-primary-100);border-radius:16px;pointer-events:none;}
.hero-figure img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:16px;box-shadow:var(--sh-2);}

/* 痛点 */
.pain{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.pain-list{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.pain-item{position:relative;padding-left:24px;border-left:1px solid var(--c-line);}
.pain-item .num{display:inline-block;font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:1px;margin-bottom:8px;}
.pain-item h3{font-size:18px;margin-bottom:8px;}
.pain-item p{font-size:14px;color:var(--c-muted);margin:0;}

/* 方案卡片 */
.solution-row{display:flex;flex-wrap:wrap;gap:24px;}
.solution-row + .solution-row{margin-top:24px;}
.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out;overflow:hidden;}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.card-main{flex:1 1 520px;display:flex;flex-direction:column;}
.card-main img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease-out;}
.card-main:hover img{transform:scale(1.03);}
.card-body{padding:26px 26px 28px;}
.rule-list{list-style:none;padding:0;margin:18px 0 20px;}
.rule-list li{position:relative;padding-left:20px;margin-bottom:12px;font-size:15px;color:var(--c-body);}
.rule-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:1px;background:var(--c-accent);}
.card-side{flex:1 1 280px;background:var(--c-primary-100);border:1px solid rgba(15,76,70,.10);border-radius:var(--r-card);padding:28px 26px;display:flex;flex-direction:column;}
.card-side h3{color:var(--c-primary-900);}
.card-side p{font-size:14px;color:#3B5A55;margin-bottom:20px;}
.arrow-link{margin-top:auto;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary-900);}
.arrow-link i{transition:transform .16s ease-out;}
.arrow-link:hover i{transform:translateX(4px);}
.card-wide{flex:1 1 100%;display:flex;flex-wrap:wrap;align-items:stretch;}
.card-wide .wide-media{flex:1 1 320px;min-width:0;}
.card-wide .wide-media img{width:100%;height:100%;min-height:260px;object-fit:cover;}
.card-wide .wide-text{flex:1 1 460px;padding:30px 32px;}

/* 数据带 */
.stats-band{background:var(--c-primary);color:#fff;padding:64px 0;}
.stats-band h2{color:#fff;font-size:24px;margin-bottom:8px;}
.stats-band .lead{color:rgba(255,255,255,.72);font-size:14px;margin-bottom:36px;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat{border-left:1px solid rgba(255,255,255,.22);padding-left:20px;}
.stat .value{font-size:44px;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums;color:#fff;display:flex;align-items:baseline;gap:4px;}
.stat .value small{font-size:16px;font-weight:600;color:rgba(255,255,255,.75);}
.stat .label{font-size:14px;color:rgba(255,255,255,.72);margin-top:8px;}

/* 证据区 */
.evidence{background:var(--c-bg);}
.evidence-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quote-card{background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-primary);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);}
.quote-card .quote-mark{font-size:22px;color:var(--c-primary-100);line-height:1;margin-bottom:10px;}
.quote-card h3{font-size:17px;margin-bottom:10px;}
.quote-card p{font-size:14px;color:var(--c-muted);margin:0;}

/* 资讯列表 */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{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;height:100%;display:flex;flex-direction:column;}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.news-card .thumb{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-primary-100);}
.news-card .thumb-holder{width:100%;aspect-ratio:16/9;background:var(--c-primary-100);display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:24px;}
.news-card .inner{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.news-card h3{font-size:17px;line-height:1.5;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card h3 a{color:var(--c-ink);}
.news-card h3 a:hover{color:var(--c-primary);}
.news-card .excerpt{font-size:14px;color:var(--c-muted);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card .meta{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--c-muted);}
.news-card .meta i{color:var(--c-primary);font-size:11px;}
.empty-state{min-height:220px;border:1px dashed var(--c-line);border-radius:var(--r-card);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:24px;background:var(--c-surface);}
.empty-state i{font-size:26px;color:var(--c-muted);}
.empty-state p{font-size:14px;color:var(--c-muted);margin:0;}

/* FAQ */
.faq-wrap{display:flex;flex-wrap:wrap;gap:48px;align-items:flex-start;}
.faq-side{flex:1 1 280px;position:sticky;top:120px;}
.faq-side h2{font-size:26px;}
.faq-side p{font-size:14px;color:var(--c-muted);}
.faq-main{flex:1 1 560px;min-width:0;}
.accordion.faq-accordion{border:0;background:transparent;margin:0;list-style:none;padding:0;}
.accordion.faq-accordion .accordion-item{border:0;border-top:1px solid var(--c-line);background:transparent;}
.accordion.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--c-line);}
.accordion.faq-accordion .accordion-title{display:flex;align-items:center;gap:12px;padding:22px 8px 22px 0;font-size:18px;font-weight:600;color:var(--c-ink);line-height:1.5;border:0;background:transparent;position:relative;}
.accordion.faq-accordion .accordion-title::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;background:transparent;border-radius:2px;transition:background-color .16s ease-out;}
.accordion.faq-accordion .accordion-item.is-active .accordion-title::before{background:var(--c-accent);}
.accordion.faq-accordion .accordion-item.is-active .accordion-title{padding-left:16px;color:var(--c-primary);}
.accordion.faq-accordion .accordion-title .q-index{font-size:13px;color:var(--c-muted);font-weight:700;}
.accordion.faq-accordion .accordion-title .toggle{margin-left:auto;font-size:14px;color:var(--c-muted);transition:transform .18s ease-out;}
.accordion.faq-accordion .accordion-item.is-active .accordion-title .toggle{transform:rotate(180deg);color:var(--c-primary);}
.accordion.faq-accordion .accordion-content{display:none;padding:0 8px 22px 16px;border:0;background:transparent;color:var(--c-body);font-size:15px;line-height:1.85;}
.accordion.faq-accordion .accordion-item.is-active .accordion-content{display:block;}
.accordion.faq-accordion .accordion-content p:last-child{margin-bottom:0;}

/* 表单 */
.form-section{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.form-wrap{display:flex;flex-wrap:wrap;gap:48px;}
.form-intro{flex:1 1 320px;}
.form-intro h2{font-size:26px;}
.form-intro ul{list-style:none;padding:0;margin:20px 0 0;}
.form-intro li{position:relative;padding-left:22px;font-size:14px;color:var(--c-muted);margin-bottom:10px;}
.form-intro li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:0;top:1px;font-size:12px;color:var(--c-primary);}
.form-box{flex:1 1 480px;min-width:0;background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
.field label .req{color:var(--c-accent);margin-left:2px;}
.field input[type=text],.field input[type=tel],.field select,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--c-line);border-radius:var(--r-input);background:var(--c-surface);font-size:15px;color:var(--c-ink);transition:border-color .16s ease-out,box-shadow .16s ease-out;}
.field textarea{min-height:110px;resize:vertical;}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#C9D4D1;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,76,70,.10);}
.field input.is-error,.field select.is-error,.field textarea.is-error{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(226,115,58,.14);}
.field-row{display:flex;gap:16px;flex-wrap:wrap;}
.field-row .field{flex:1 1 200px;}
.checkline{display:flex;align-items:flex-start;gap:10px;font-size:12px;color:var(--c-muted);margin-top:14px;line-height:1.7;}
.checkline input{margin-top:4px;accent-color:var(--c-primary);}
.form-note{font-size:12px;color:var(--c-muted);margin-top:12px;}

/* 弹层 */
.reveal-overlay{position:fixed;inset:0;background:rgba(11,58,53,.55);z-index:1005;display:none;}
.reveal-overlay.is-open{display:block;}
.reveal.consult-modal{display:none;position:fixed;z-index:1006;top:50%;left:50%;transform:translate(-50%,-50%);width:min(560px,92vw);max-height:88vh;overflow:auto;background:var(--c-surface);border-radius:16px;border:0;padding:0;box-shadow:var(--sh-2);}
.reveal.consult-modal.is-open{display:block;}
.consult-modal .modal-head{position:relative;padding:26px 28px 18px;border-bottom:1px solid var(--c-line);}
.consult-modal .modal-head h3{margin:0 0 6px;font-size:20px;}
.consult-modal .modal-head p{margin:0;font-size:13px;color:var(--c-muted);}
.consult-modal .modal-close{position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:50%;background:var(--c-bg);color:var(--c-muted);font-size:16px;display:flex;align-items:center;justify-content:center;}
.consult-modal .modal-close:hover{background:var(--c-primary-100);color:var(--c-primary);}
.consult-modal .modal-body{padding:22px 28px 28px;}

/* CTA 带 */
.cta-band{background:var(--c-primary-900);color:#fff;padding:56px 0;border-bottom:1px solid rgba(255,255,255,.10);}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
.cta-inner h2{color:#fff;font-size:24px;margin-bottom:6px;}
.cta-inner p{color:rgba(255,255,255,.75);font-size:14px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* 页脚 */
.site-footer{background:var(--c-primary-900);color:rgba(255,255,255,.82);padding:56px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:40px;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.site-footer .f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.site-footer .f-mark{width:36px;height:36px;border-radius:10px;background:var(--c-primary-100);color:var(--c-primary-900);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;}
.site-footer .f-name{color:#fff;font-weight:700;font-size:15px;line-height:1.3;}
.site-footer p{color:rgba(255,255,255,.72);font-size:13px;line-height:1.85;margin-bottom:12px;}
.site-footer ul{list-style:none;padding:0;margin:0;}
.site-footer li{margin-bottom:10px;}
.site-footer a{color:rgba(255,255,255,.82);border-bottom:2px solid transparent;padding-bottom:1px;}
.site-footer a:hover{color:var(--c-primary-100);border-bottom-color:var(--c-primary-100);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:18px 0 26px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:12px;color:rgba(255,255,255,.6);}
.footer-bottom a{color:rgba(255,255,255,.66);font-size:12px;}

/* 动效 */
.reveal-up{opacity:0;transform:translateY(18px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal-up.is-visible{opacity:1;transform:none;}

@media (max-width:1023px){
  .section{padding:64px 0;}
  .section-tight{padding:48px 0;}
  h1{font-size:32px;}
  .hero{padding:48px 0 64px;}
  .hero h1{font-size:32px;}
  .hero-inner{gap:32px;}
  .hero-figure{flex:1 1 100%;}
  .pain-list{grid-template-columns:1fr;gap:24px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .evidence-grid{grid-template-columns:1fr;}
  .news-list{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .faq-side{position:static;}
  .brandbar-inner{height:64px;}
  .menu-toggle{display:inline-flex;}
  .brand-actions .btn-accent{display:none;}
}
@media (max-width:639px){
  .container{padding-left:20px;padding-right:20px;}
  .section{padding:48px 0;}
  body{font-size:15px;}
  h1{font-size:28px;}
  .hero h1{font-size:28px;}
  h2{font-size:22px;}
  .hero .sub{font-size:16px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .stat{padding-left:14px;}
  .stat .value{font-size:34px;}
  .news-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-inner h2{font-size:20px;}
  .cta-actions .btn{width:100%;}
  .form-box{padding:20px;}
  .card-body{padding:20px;}
  .card-wide .wide-text{padding:22px;}
}
@media (max-width:480px){
  .hero-kicker{font-size:12px;padding:6px 12px;}
  .brand-text strong{font-size:15px;}
  .brand-text em{font-size:11px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition:none!important;animation:none!important;}
  .reveal-up{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --c-primary:#0F4C46;
  --c-primary-900:#0B3A35;
  --c-primary-100:#DDEBE8;
  --c-accent:#E2733A;
  --c-accent-600:#C9602C;
  --c-ink:#17201E;
  --c-body:#43514D;
  --c-muted:#7C8985;
  --c-line:#E3E8E6;
  --c-bg:#FAFAF7;
  --c-surface:#FFFFFF;
  --c-disabled:#C8CFCC;
  --c-disabled-text:#8A9491;
  --sh-1:0 1px 2px rgba(23,32,30,.06);
  --sh-2:0 8px 24px rgba(23,32,30,.10);
  --r-card:12px;
  --r-btn:8px;
  --r-badge:4px;
  --r-pill:999px;
  --sp-1:8px; --sp-2:12px; --sp-3:16px; --sp-4:24px; --sp-5:32px; --sp-6:48px; --sp-7:64px; --sp-8:88px;
  --font-cn:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;letter-spacing:.2px;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:28px;line-height:1.35;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0 0 20px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

/* 布局容器 */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--plain{background:var(--c-surface);}
.section--soft{background:#F2F5F3;}

/* 头部 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,250,247,.96);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.brandbar{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);height:72px;}
.brand{display:flex;align-items:center;gap:12px;min-width:0;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:var(--r-btn);
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:16px;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0;}
.brand-text strong{font-size:17px;color:var(--c-ink);font-weight:700;white-space:nowrap;}
.brand-text span{font-size:12px;color:var(--c-muted);}
.brand-actions{display:flex;align-items:center;gap:12px;}
.menu-toggle{
  display:none;align-items:center;gap:6px;height:40px;padding:0 14px;
  border:1px solid var(--c-line);background:transparent;border-radius:var(--r-btn);
  color:var(--c-body);font-size:14px;cursor:pointer;transition:background .18s ease-out,border-color .18s ease-out;
}
.menu-toggle:hover{background:var(--c-primary-100);border-color:var(--c-primary-100);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-accent-600);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{background:#B45526;}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-100);color:var(--c-primary-900);}
.btn-ghost{background:transparent;color:var(--c-body);border-color:var(--c-line);}
.btn-ghost:hover{background:var(--c-primary-100);color:var(--c-primary-900);border-color:var(--c-primary-100);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{background:var(--c-disabled);color:var(--c-disabled-text);cursor:not-allowed;border-color:var(--c-disabled);}

/* 分段标签导航 */
.chipbar{border-top:1px solid var(--c-line);background:transparent;}
.chipbar .container{display:flex;align-items:center;}
.nav-chips{display:flex;align-items:center;gap:8px;list-style:none;margin:0;padding:10px 0;border:0;}
.nav-chips .tabs-title{float:none;margin:0;}
.nav-chips .tabs-title>a{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid var(--c-line);
  color:var(--c-body);font-size:15px;line-height:1;background:transparent;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.nav-chips .tabs-title>a:hover{background:var(--c-primary-100);color:var(--c-primary-900);border-color:var(--c-primary-100);}
.nav-chips .tabs-title.is-active>a{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.nav-chips .tabs-title.is-active>a:hover{background:var(--c-primary-900);border-color:var(--c-primary-900);color:#fff;}

/* 移动面板 */
.mobile-panel{display:none;border-top:1px solid var(--c-line);background:var(--c-surface);padding:12px 0 20px;}
.mobile-panel.is-open{display:block;}
.mobile-panel ul{display:flex;flex-direction:column;gap:8px;}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  color:var(--c-body);font-size:15px;
}
.mobile-panel a:hover{background:var(--c-primary-100);border-color:var(--c-primary-100);color:var(--c-primary-900);}
.mobile-panel a.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}

/* 页头英雄区 */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,58,53,.52) 0%,rgba(11,58,53,.44) 42%,rgba(11,58,53,.66) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:96px 0 72px;max-width:880px;margin:0 auto;text-align:center;}
.crumb{font-size:13px;color:rgba(255,255,255,.78);margin-bottom:22px;display:flex;gap:8px;justify-content:center;flex-wrap:wrap;}
.crumb a{color:rgba(255,255,255,.88);}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.crumb span.sep{color:rgba(255,255,255,.5);}
.page-hero h1{color:#fff;font-size:40px;line-height:1.28;margin-bottom:18px;}
.page-hero h1 em{font-style:normal;position:relative;display:inline-block;}
.page-hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:3px;background:var(--c-accent);border-radius:2px;opacity:.9;
}
.page-hero p{font-size:16px;color:rgba(255,255,255,.84);max-width:640px;margin:0 auto 28px;}
.hero-tags{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;
  border:1px solid rgba(255,255,255,.38);border-radius:var(--r-pill);
  font-size:13px;color:rgba(255,255,255,.92);
}
.hero-frame{
  position:relative;margin-top:48px;border-radius:16px;overflow:hidden;
  border:1px solid rgba(255,255,255,.28);
}
.hero-frame img{width:100%;aspect-ratio:21/8;object-fit:cover;}
.hero-frame::after{
  content:"";position:absolute;inset:10px;border:1px solid rgba(221,235,232,.45);border-radius:12px;pointer-events:none;
}

/* 通用区块头 */
.section-head{max-width:720px;margin-bottom:48px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--c-primary);background:var(--c-primary-100);
  padding:5px 12px;border-radius:var(--r-badge);margin-bottom:16px;letter-spacing:.4px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--c-body);margin:0;}

/* 导语 */
.intro-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:24px;max-width:860px;margin:0 auto;}
.intro-grid p{font-size:17px;line-height:1.9;color:var(--c-body);margin:0;}
.intro-grid p:first-child{font-size:18px;color:var(--c-ink);}
.intro-note{
  margin-top:32px;background:var(--c-primary-100);border-left:4px solid var(--c-primary);
  border-radius:0 var(--r-card) var(--r-card) 0;padding:20px 24px;
  font-size:15px;color:var(--c-primary-900);
}
.intro-note strong{color:var(--c-primary-900);}

/* 双列要点 */
.key-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch;}
.kcard{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.kcard:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.kcard-media{overflow:hidden;}
.kcard-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s ease-out;}
.kcard:hover .kcard-media img{transform:scale(1.03);}
.kcard-body{padding:28px;display:flex;flex-direction:column;flex:1;}
.kcard-body h3{margin-bottom:12px;}
.kcard-body p{font-size:15px;color:var(--c-body);margin-bottom:20px;}
.klist{display:flex;flex-direction:column;gap:12px;margin-bottom:24px;}
.klist li{display:flex;gap:10px;font-size:15px;color:var(--c-body);align-items:flex-start;}
.klist li i{color:var(--c-primary);margin-top:6px;font-size:13px;}
.kcard--soft{background:var(--c-primary-100);border-color:transparent;justify-content:space-between;}
.kcard--soft .kcard-body{padding:32px 28px;height:100%;}
.kcard--soft h3{color:var(--c-primary-900);}
.kcard--soft p{color:#2C4B47;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;
  color:var(--c-primary);margin-top:auto;
}
.text-link i{transition:transform .18s ease-out;}
.text-link:hover{color:var(--c-accent);}
.text-link:hover i{transform:translateX(4px);}

/* 步骤时间线 */
.steps{position:relative;display:flex;flex-direction:column;gap:0;margin-top:8px;}
.step{
  display:grid;grid-template-columns:96px minmax(0,1fr);gap:24px;
  padding:28px 0;border-bottom:1px solid var(--c-line);
}
.step:last-child{border-bottom:0;}
.step-num{
  font-size:32px;font-weight:700;color:var(--c-primary-100);
  font-variant-numeric:tabular-nums;line-height:1;letter-spacing:1px;
  display:flex;align-items:flex-start;padding-top:2px;
}
.step-num span{color:var(--c-accent);font-size:14px;margin-left:2px;}
.step-body h3{margin-bottom:8px;}
.step-body p{font-size:15px;margin:0;color:var(--c-body);}
.step-body .step-hint{
  display:inline-block;margin-top:10px;font-size:13px;color:var(--c-muted);
  border-left:2px solid var(--c-line);padding-left:10px;
}

/* 对照清单 */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare-col{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
}
.compare-col--ok{background:var(--c-primary-100);border-color:transparent;}
.compare-col h3{display:flex;align-items:center;gap:10px;margin-bottom:18px;font-size:18px;}
.compare-col--ok h3{color:var(--c-primary-900);}
.compare-col h3 i{font-size:16px;}
.compare-col ul{display:flex;flex-direction:column;gap:14px;}
.compare-col li{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--c-body);}
.compare-col li i{margin-top:6px;font-size:12px;color:var(--c-muted);}
.compare-col--ok li i{color:var(--c-primary);}

/* FAQ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-aside{position:sticky;top:112px;}
.faq-aside h2{margin-bottom:12px;}
.faq-aside p{font-size:15px;color:var(--c-muted);margin-bottom:20px;}
.accordion{margin:0;border:0;background:transparent;}
.accordion-item{border:0;border-bottom:1px solid var(--c-line);}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;font-size:18px;font-weight:600;color:var(--c-ink);
  border:0;background:transparent;position:relative;transition:color .18s ease-out;
}
.accordion-title:hover{color:var(--c-primary);}
.accordion-title::before{display:none;}
.accordion-title .faq-mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--c-muted);transition:all .18s ease-out;
}
.accordion-item.is-active .accordion-title{color:var(--c-primary-900);}
.accordion-item.is-active .accordion-title .faq-mark{background:var(--c-accent);border-color:var(--c-accent);color:#fff;}
.accordion-item.is-active .accordion-title::after{
  content:"";position:absolute;left:-16px;top:24px;bottom:24px;width:3px;
  background:var(--c-accent);border-radius:2px;
}
.accordion-content{padding:0 0 24px;border:0;background:transparent;font-size:15px;line-height:1.85;color:var(--c-body);}
.accordion-content p:last-child{margin-bottom:0;}

/* CTA 带 */
.cta-band{
  background:var(--c-primary-900);color:rgba(255,255,255,.86);
  border-top:1px solid rgba(255,255,255,.10);position:relative;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(255,255,255,.10);
}
.cta-inner{
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  padding:64px 0;
}
.cta-inner h2{color:#fff;font-size:28px;margin-bottom:14px;}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15px;margin-bottom:0;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end;}
.chain{margin-top:36px;padding-top:28px;border-top:1px solid rgba(255,255,255,.12);}
.chain-label{font-size:13px;color:rgba(255,255,255,.62);margin-bottom:12px;}
.chain-chips{display:flex;gap:10px;flex-wrap:wrap;}
.chain-chip{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.32);
  color:rgba(255,255,255,.9);font-size:14px;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.chain-chip:hover{background:#fff;color:var(--c-primary-900);border-color:#fff;}

/* 表单 */
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);
}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
.field label .req{color:var(--c-accent);margin-left:2px;}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;height:46px;padding:0 14px;font-size:15px;color:var(--c-ink);
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-btn);
  transition:border-color .18s ease-out,background .18s ease-out,box-shadow .18s ease-out;
  font-family:inherit;
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#CBD6D2;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,76,70,.10);
}
.field input::placeholder,.field textarea::placeholder{color:var(--c-muted);}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:#B45526;background:#FDF4EF;}
.field-note{font-size:12px;color:var(--c-muted);margin-top:6px;}
.check-row{display:flex;gap:10px;align-items:flex-start;margin:20px 0;}
.check-row input{margin-top:4px;width:16px;height:16px;accent-color:var(--c-primary);}
.check-row span{font-size:12px;line-height:1.7;color:var(--c-muted);}

/* 页脚 */
.site-footer{background:var(--c-primary-900);color:rgba(255,255,255,.82);padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:4fr 2.5fr 3fr 2.5fr;gap:40px;padding-bottom:48px;}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.f-mark{
  width:34px;height:34px;border-radius:var(--r-btn);background:var(--c-primary);
  border:1px solid rgba(255,255,255,.24);color:#fff;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:14px;
}
.f-name{color:#fff;font-weight:700;font-size:16px;}
.site-footer p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.site-footer ul{display:flex;flex-direction:column;gap:10px;}
.site-footer ul li{color:rgba(255,255,255,.72);}
.site-footer a{
  color:rgba(255,255,255,.82);position:relative;padding-bottom:2px;
  background-image:linear-gradient(currentColor,currentColor);
  background-repeat:no-repeat;background-size:0 2px;background-position:0 100%;
  transition:background-size .18s ease-out,color .18s ease-out;
}
.site-footer a:hover{color:var(--c-primary-100);background-size:100% 2px;}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;font-size:13px;color:rgba(255,255,255,.6);
}

/* 弹层 */
.reveal-overlay{background:rgba(11,58,53,.55);}
.reveal{
  border:0;border-radius:16px;padding:0;box-shadow:0 24px 60px rgba(11,58,53,.28);width:560px;
}
.reveal-inner{padding:32px;}
.reveal-inner h3{margin-bottom:10px;}
.reveal-inner>p{font-size:14px;color:var(--c-muted);margin-bottom:24px;}
.reveal .close-button{
  top:16px;right:16px;color:var(--c-muted);font-size:20px;
}
.reveal .close-button:hover{color:var(--c-ink);}

/* 动效 */
.reveal-on-scroll{opacity:0;transform:translateY(16px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal-on-scroll.is-visible{opacity:1;transform:none;}

/* 响应式 */
@media screen and (max-width:1199px){
  h1,.page-hero h1{font-size:36px;}
  .footer-grid{grid-template-columns:3fr 2fr 3fr;gap:32px;}
}
@media screen and (max-width:1023px){
  .section{padding:64px 0;}
  .page-hero-inner{padding:72px 0 56px;}
  .key-grid{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:56px 0;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .chipbar .container{overflow-x:auto;-ms-overflow-style:none;scrollbar-width:none;}
  .chipbar .container::-webkit-scrollbar{display:none;}
  .nav-chips{flex-wrap:nowrap;}
  .nav-chips .tabs-title>a{white-space:nowrap;}
}
@media screen and (max-width:767px){
  .brandbar{height:60px;}
  .brand-text strong{font-size:15px;}
  .brand-text span{display:none;}
  .menu-toggle{display:inline-flex;}
  .brand-actions .btn-primary{height:38px;padding:0 14px;font-size:14px;}
  h1,.page-hero h1{font-size:28px;}
  h2,.section-head h2,.cta-inner h2{font-size:22px;}
  h3{font-size:18px;}
  .page-hero-inner{padding:56px 0 44px;}
  .hero-frame img{aspect-ratio:16/9;}
  .compare-grid{grid-template-columns:1fr;}
  .step{grid-template-columns:64px minmax(0,1fr);gap:16px;padding:22px 0;}
  .step-num{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .reveal{width:92%;}
  .reveal-inner{padding:24px;}
  .section-head{margin-bottom:32px;}
}
@media screen and (max-width:519px){
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .section--tight{padding:44px 0;}
  .btn{width:100%;}
  .brand-actions .btn-primary{width:auto;}
  .hero-tags{justify-content:flex-start;}
  .cta-actions .btn{width:100%;}
  .kcard-body{padding:22px;}
  .form-card{padding:22px;}
  .accordion-title{font-size:16px;}
  .accordion-item.is-active .accordion-title::after{left:-12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal-on-scroll{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --c-primary:#0F4C46;
  --c-primary-900:#0B3A35;
  --c-primary-100:#DDEBE8;
  --c-accent:#E2733A;
  --c-accent-dark:#C85F2C;
  --c-ink:#17201E;
  --c-body:#43514D;
  --c-muted:#7C8985;
  --c-line:#E3E8E6;
  --c-bg:#FAFAF7;
  --c-surface:#FFFFFF;
  --c-disabled:#C8CFCC;
  --c-disabled-ink:#8A9491;
  --r-card:12px;
  --r-btn:8px;
  --r-input:8px;
  --r-badge:4px;
  --sh-1:0 1px 2px rgba(23,32,30,.06);
  --sh-2:0 8px 24px rgba(23,32,30,.10);
  --ease:cubic-bezier(.2,.6,.3,1);
  --t-fast:160ms;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t-fast) var(--ease)}
a:hover{color:var(--c-primary-900)}
ul,ol{margin:0;padding:0}
li{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:.2px}
h1{font-size:40px;line-height:1.25}
h2{font-size:28px;line-height:1.35;font-weight:700}
h3{font-size:20px;line-height:1.5;font-weight:600}
h4{font-size:16px;line-height:1.5;font-weight:600}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--surface{background:var(--c-surface)}
.section--soft{background:var(--c-primary-100)}

/* ============ 顶部导航 ============ */
.site-top{position:sticky;top:0;z-index:80}
.site-header{
  background:var(--c-bg);
  border-bottom:1px solid transparent;
  transition:background var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.site-top.is-scrolled .site-header{
  background:rgba(250,250,247,.96);
  border-bottom-color:var(--c-line);
  box-shadow:var(--sh-1);
}
.brand-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:72px;
  padding-top:10px;
  padding-bottom:10px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:10px;
  background:var(--c-primary);color:#fff;
  font-size:14px;font-weight:700;letter-spacing:.5px;
}
.brand-name{font-size:17px;font-weight:700;color:var(--c-ink)}
.brand-sub{
  font-size:12px;color:var(--c-muted);
  border:1px solid var(--c-line);border-radius:var(--r-badge);
  padding:1px 6px;margin-left:2px;
}
.brand-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{
  display:none;align-items:center;gap:6px;
  height:40px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-body);font-size:14px;cursor:pointer;
}
.menu-toggle:hover{background:var(--c-primary-100);border-color:var(--c-primary-100);color:var(--c-primary)}

/* chip 分段导航 */
.chipbar{background:var(--c-bg);border-bottom:1px solid var(--c-line)}
.chipbar .container{padding-top:8px;padding-bottom:8px}
.chipbar .nav-chips{
  display:flex;flex-wrap:nowrap;gap:8px;
  margin:0;padding:0;border:none;background:none;
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.chipbar .nav-chips::-webkit-scrollbar{display:none}
.chipbar .nav-chips .tabs-title{float:none;flex:0 0 auto}
.chipbar .nav-chips .tabs-title > a{
  display:inline-flex;align-items:center;
  height:40px;padding:0 18px;
  border:1px solid var(--c-line);border-radius:999px;
  background:transparent;color:var(--c-body);
  font-size:15px;white-space:nowrap;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.chipbar .nav-chips .tabs-title > a:hover{background:var(--c-primary-100);border-color:var(--c-primary-100);color:var(--c-primary)}
.chipbar .nav-chips .tabs-title.is-active > a,
.chipbar .nav-chips .tabs-title.is-active > a:hover{
  background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;
}
.mobile-panel{display:none;border-top:1px solid var(--c-line);background:var(--c-surface);padding:12px 0 18px}
.mobile-panel.is-open{display:block}
.mobile-panel ul{display:block}
.mobile-panel li{margin-bottom:8px}
.mobile-panel a{
  display:block;padding:12px 14px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);color:var(--c-body);font-size:15px;
}
.mobile-panel a.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:16px;font-weight:600;
  cursor:pointer;text-align:center;white-space:nowrap;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--c-accent);color:#fff;border-color:var(--c-accent);box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-accent-dark);border-color:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{background:#B2521F;border-color:#B2521F;transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-100);color:var(--c-primary)}
.btn-ghost{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;border-color:#fff}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  height:auto;padding:0;background:none;border:none;
  color:var(--c-primary);font-size:15px;font-weight:600;
}
.btn-link:hover{color:var(--c-accent)}
.btn-link .arrow{transition:transform var(--t-fast) var(--ease)}
.btn-link:hover .arrow{transform:translateX(4px)}

/* ============ Hero ============ */
.cat-hero{position:relative;overflow:hidden;background:var(--c-primary-900)}
.cat-hero__bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.02)}
.cat-hero__mask{
  position:absolute;inset:0;
  background:linear-gradient(96deg,rgba(11,58,53,.90) 0%,rgba(11,58,53,.66) 54%,rgba(11,58,53,.36) 100%);
}
.cat-hero__inner{position:relative;z-index:2;padding-top:56px;padding-bottom:64px;max-width:840px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:20px}
.crumb a{color:rgba(255,255,255,.86)}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:rgba(255,255,255,.45)}
.crumb-current{color:#fff;font-weight:600}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1px;color:#fff;
  background:rgba(226,115,58,.92);border-radius:var(--r-badge);
  padding:4px 10px;margin-bottom:18px;
}
.cat-hero h1{color:#fff;max-width:760px}
.cat-hero__sub{
  margin-top:18px;max-width:620px;
  font-size:16px;line-height:1.8;color:rgba(255,255,255,.82);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:24px;margin-top:36px;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.18);
}
.hero-meta div{min-width:120px}
.hero-meta dt{font-size:12px;color:rgba(255,255,255,.62);margin-bottom:2px}
.hero-meta dd{margin:0;font-size:15px;font-weight:600;color:#fff}

/* ============ 通用标题 ============ */
.sec-head{margin-bottom:40px;max-width:760px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-num{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:34px;height:24px;padding:0 8px;margin-bottom:14px;
  border-radius:var(--r-badge);background:var(--c-primary-100);
  color:var(--c-primary);font-size:12px;font-weight:700;letter-spacing:1px;
}
.sec-head h2 + p{margin-top:14px;font-size:16px;color:var(--c-body)}
.sec-head h2{position:relative;padding-left:16px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:var(--c-primary);
}
.sec-head--center h2{padding-left:0}
.sec-head--center h2::before{display:none}

/* ============ 导语与要点 ============ */
.lead-block{max-width:820px}
.lead-block p{font-size:17px;line-height:1.9}
.point-list{margin-top:28px}
.point{
  display:flex;gap:16px;padding:20px 0;border-top:1px solid var(--c-line);
}
.point:last-child{border-bottom:1px solid var(--c-line)}
.point__idx{
  flex:0 0 auto;width:34px;height:34px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-100);color:var(--c-primary);
  font-size:13px;font-weight:700;
}
.point h3{font-size:17px;margin-bottom:4px}
.point p{font-size:14px;color:var(--c-body);margin:0}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:44px;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:13px;top:10px;bottom:10px;width:1px;background:var(--c-line);
}
.tl-item{position:relative;padding-bottom:32px}
.tl-item:last-child{padding-bottom:0}
.tl-node{
  position:absolute;left:-44px;top:2px;
  width:28px;height:28px;border-radius:999px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-surface);border:1px solid var(--c-primary-100);
  color:var(--c-primary);font-size:12px;font-weight:700;
}
.tl-item:first-child .tl-node{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.tl-body{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-1);
  transition:box-shadow var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
}
.tl-body:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.tl-body h3{font-size:18px;margin-bottom:8px}
.tl-body p{font-size:15px;margin:0}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-badge);background:var(--c-primary-100);
  color:var(--c-primary);font-size:12px;font-weight:600;
}
.tag--accent{background:rgba(226,115,58,.12);color:#B2521F}

/* ============ 对照清单 ============ */
.compare-grid{display:grid;gap:20px;grid-template-columns:1fr 1fr;margin-top:8px}
.compare-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);
}
.compare-card h3{margin-bottom:6px}
.compare-card > p{font-size:14px;color:var(--c-muted);margin-bottom:18px}
.checklist li{
  display:flex;gap:12px;padding:12px 0;border-top:1px dashed var(--c-line);
  font-size:15px;color:var(--c-body);
}
.checklist li:first-child{border-top:none;padding-top:0}
.dot{
  flex:0 0 auto;width:20px;height:20px;border-radius:999px;margin-top:5px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
}
.dot--ok{background:var(--c-primary-100);color:var(--c-primary)}
.dot--warn{background:rgba(226,115,58,.14);color:#B2521F}

/* ============ 场景卡（2+1 错位） ============ */
.scene-grid{display:grid;gap:20px;grid-template-columns:repeat(2,1fr)}
.scene-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.scene-card__media{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-100)}
.scene-card__media img{width:100%;height:100%;object-fit:cover;transition:transform 220ms var(--ease)}
.scene-card:hover .scene-card__media img{transform:scale(1.03)}
.scene-card__body{padding:24px}
.scene-card__body h3{font-size:18px;margin-bottom:8px}
.scene-card__body p{font-size:14px;margin-bottom:14px}
.scene-card--wide{
  grid-column:1 / -1;
  display:grid;grid-template-columns:5fr 7fr;
}
.scene-card--wide .scene-card__media{aspect-ratio:auto;min-height:240px}
.scene-card--wide .scene-card__body{padding:32px;display:flex;flex-direction:column;justify-content:center}
.scene-card--wide h3{font-size:20px}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-aside{position:sticky;top:140px}
.faq-aside h2{font-size:24px;margin-bottom:12px}
.faq-aside p{font-size:15px;color:var(--c-body)}
.faq-aside .aside-actions{margin-top:20px}
.accordion{background:none;border:none;margin:0}
.accordion .accordion-item{border:none;border-top:1px solid var(--c-line)}
.accordion .accordion-item:last-child{border-bottom:1px solid var(--c-line)}
.accordion .accordion-title{
  position:relative;display:block;
  padding:20px 44px 20px 0;
  border:none;background:none;
  font-size:18px;font-weight:600;color:var(--c-ink);line-height:1.6;
}
.accordion .accordion-title:hover{color:var(--c-primary)}
.accordion .accordion-title::before{
  content:"";position:absolute;right:14px;top:50%;
  width:10px;height:10px;margin-top:-5px;
  border-right:1.5px solid var(--c-muted);border-bottom:1.5px solid var(--c-muted);
  transform:rotate(45deg);transition:transform var(--t-fast) var(--ease);
}
.accordion .accordion-item.is-active .accordion-title{color:var(--c-primary)}
.accordion .accordion-item.is-active .accordion-title::before{
  transform:rotate(-135deg);margin-top:-1px;border-color:var(--c-primary);
}
.accordion .accordion-item.is-active .accordion-title::after{
  content:"";position:absolute;left:-16px;top:18px;bottom:18px;width:3px;
  border-radius:2px;background:var(--c-accent);
}
.accordion .accordion-content{
  padding:0 44px 24px 0;border:none;background:none;
  font-size:15px;line-height:1.85;color:var(--c-body);
}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--c-primary-900);
  color:rgba(255,255,255,.82);
  padding:72px 0;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.cta-inner{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:14px}
.cta-band p{font-size:15px;color:rgba(255,255,255,.78);margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
.chip-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip-links a{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border-radius:999px;border:1px solid rgba(255,255,255,.32);
  color:rgba(255,255,255,.9);font-size:14px;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.chip-links a:hover{background:#fff;color:var(--c-primary-900);border-color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-900);color:rgba(255,255,255,.82);padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1.2fr;gap:40px}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.f-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:9px;background:var(--c-accent);
  color:#fff;font-size:13px;font-weight:700;
}
.f-name{font-size:16px;font-weight:700;color:#fff}
.site-footer p{color:rgba(255,255,255,.72);line-height:1.9}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.site-footer ul li{margin-bottom:10px}
.site-footer a{color:rgba(255,255,255,.82);position:relative}
.site-footer a:hover{color:var(--c-primary-100)}
.site-footer a::after{
  content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;
  background:var(--c-primary-100);transition:right var(--t-fast) var(--ease);
}
.site-footer a:hover::after{right:0}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.62);
}

/* ============ 表单 ============ */
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.req{color:var(--c-accent);margin-left:2px}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;padding:12px 14px;
  background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-input);
  font-size:15px;color:var(--c-ink);
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.field textarea{min-height:110px;resize:vertical}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--c-muted)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,76,70,.12);
}
.field input::placeholder,.field textarea::placeholder{color:var(--c-muted)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(226,115,58,.14)}
.form-note{font-size:12px;color:var(--c-muted);margin-top:12px;line-height:1.7}
.checkbox-row{display:flex;gap:10px;align-items:flex-start;margin:16px 0 20px;font-size:13px;color:var(--c-body)}
.checkbox-row input{margin-top:4px}
.form-feedback{
  display:none;margin-top:16px;padding:12px 14px;border-radius:var(--r-btn);
  background:var(--c-primary-100);color:var(--c-primary);font-size:14px;font-weight:600;
}
.form-feedback.is-visible{display:block}

/* Reveal 弹层 */
.reveal{
  border:none;border-radius:16px;padding:0;
  max-width:560px;background:var(--c-surface);box-shadow:0 24px 60px rgba(11,58,53,.28);
}
.reveal .modal-inner{padding:36px 36px 32px}
.reveal h3{font-size:22px;margin-bottom:8px}
.reveal .modal-sub{font-size:14px;color:var(--c-body);margin-bottom:24px}
.reveal .close-button{
  top:14px;right:16px;color:var(--c-muted);font-size:26px;line-height:1;
  background:none;border:none;cursor:pointer;
}
.reveal .close-button:hover{color:var(--c-primary)}
.reveal-overlay{background:rgba(11,58,53,.55)}

/* ============ 动效 ============ */
.fade-up{opacity:0;transform:translateY(18px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.fade-up.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media screen and (max-width:1199px){
  h1{font-size:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media screen and (max-width:1023px){
  .section{padding:64px 0}
  .section--tight{padding:48px 0}
  .cat-hero__inner{padding-top:44px;padding-bottom:52px}
  .compare-grid{grid-template-columns:1fr}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
}
@media screen and (max-width:768px){
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .brand-bar{min-height:60px}
  .brand-name{font-size:15px}
  .brand-sub{display:none}
  .menu-toggle{display:inline-flex}
  .brand-actions .btn-sm{height:38px;padding:0 14px}
  .scene-grid{grid-template-columns:1fr}
  .scene-card--wide{grid-template-columns:1fr}
  .scene-card--wide .scene-card__media{min-height:200px;aspect-ratio:16/9}
  .scene-card--wide .scene-card__body{padding:24px}
  .timeline{padding-left:38px}
  .tl-node{left:-38px}
  .timeline::before{left:13px}
  .accordion .accordion-title{font-size:16px;padding-right:36px}
  .accordion .accordion-content{padding-right:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media screen and (max-width:520px){
  .container{padding:0 20px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-meta{gap:16px}
  .reveal .modal-inner{padding:28px 20px 24px}
  .lead-block p{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .fade-up{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --c-primary:#0F4C46;
  --c-primary-900:#0B3A35;
  --c-primary-100:#DDEBE8;
  --c-accent:#E2733A;
  --c-accent-dark:#C9601F;
  --c-ink:#17201E;
  --c-body:#43514D;
  --c-muted:#7C8985;
  --c-line:#E3E8E6;
  --c-bg:#FAFAF7;
  --c-surface:#FFFFFF;
  --c-disabled-bg:#C8CFCC;
  --c-disabled-ink:#8A9491;
  --sh-1:0 1px 2px rgba(23,32,30,.06);
  --sh-2:0 8px 24px rgba(23,32,30,.10);
  --r-card:12px;
  --r-btn:8px;
  --r-input:8px;
  --r-badge:4px;
  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  --t-fast:160ms ease-out;
  --t-base:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;background:transparent}
a:hover,a:focus{color:inherit}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.35}
p{margin:0}
input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
::selection{background:var(--c-primary-100);color:var(--c-primary-900)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:639px){.container{padding:0 20px}}

/* ============ 头部与导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--c-bg);
  transition:background var(--t-base),box-shadow var(--t-base),border-color var(--t-base);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(250,250,247,.96);
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  backdrop-filter:saturate(150%) blur(6px);
}
.brand-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:10px;
  background:var(--c-primary);
  color:#fff;
  font-weight:700;
  font-size:15px;
  letter-spacing:.5px;
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:16px;font-weight:700;color:var(--c-ink);white-space:nowrap}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-muted);white-space:nowrap}
.brand-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  background:var(--c-surface);
  align-items:center;
  justify-content:center;
  transition:background var(--t-fast),border-color var(--t-fast);
}
.menu-toggle:hover{background:var(--c-primary-100);border-color:var(--c-primary-100)}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

.chipbar{border-top:1px solid var(--c-line);background:transparent}
.nav-chips{
  display:flex;
  align-items:center;
  gap:8px;
  list-style:none;
  margin:0;
  padding:10px 0;
  border:0;
  background:transparent;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-chips::-webkit-scrollbar{display:none}
.nav-chips::before,.nav-chips::after{display:none}
.nav-chips .tabs-title{float:none;flex:0 0 auto}
.nav-chips .tabs-title>a{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 18px;
  border:1px solid var(--c-line);
  border-radius:999px;
  background:transparent;
  color:var(--c-body);
  font-size:15px;
  font-weight:500;
  line-height:1;
  white-space:nowrap;
  transition:background var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.nav-chips .tabs-title>a:hover{background:var(--c-primary-100);color:var(--c-primary-900);border-color:var(--c-primary-100)}
.nav-chips .tabs-title.is-active>a,
.nav-chips .tabs-title>a[aria-current="page"]{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
  font-weight:600;
}
.mobile-nav{display:none;border-top:1px solid var(--c-line);background:var(--c-surface)}
.mobile-nav ul{padding:12px 0 20px}
.mobile-nav li+li{border-top:1px solid var(--c-line)}
.mobile-nav a{display:block;padding:14px 4px;font-size:15px;color:var(--c-body)}
.mobile-nav a:hover{color:var(--c-primary)}
.mobile-nav.is-open{display:block}

/* ============ 按钮 / 徽章 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;
  transition:background var(--t-base),color var(--t-base),border-color var(--t-base),transform var(--t-base),box-shadow var(--t-base);
}
.btn-primary{background:var(--c-accent);color:#fff}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent}
.btn-outline:hover{background:var(--c-primary-100);color:var(--c-primary-900);transform:translateY(-1px)}
.btn-ghost-light{border-color:rgba(255,255,255,.45);color:#fff;background:transparent}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn:active{transform:translateY(0);box-shadow:none}
.btn[disabled],.btn.is-disabled{background:var(--c-disabled-bg);color:var(--c-disabled-ink);border-color:transparent;pointer-events:none}
.chip{
  display:inline-flex;align-items:center;
  height:26px;padding:0 10px;
  border-radius:var(--r-badge);
  background:var(--c-primary-100);
  color:var(--c-primary);
  font-size:12.5px;font-weight:600;line-height:1;
}
.badge-row{display:flex;flex-wrap:wrap;gap:8px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;
  border:1px solid var(--c-line);
  border-radius:999px;
  background:var(--c-surface);
  font-size:13px;color:var(--c-body);
}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:inline-block}
.link-plain{color:var(--c-primary);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px}
.link-plain::after{content:"→";transition:transform var(--t-fast)}
.link-plain:hover::after{transform:translateX(3px)}

/* ============ 面包屑 ============ */
.crumb-wrap{padding:28px 0 0}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:14px;color:var(--c-muted);line-height:1.6;
}
.crumb a{color:var(--c-muted);transition:color var(--t-fast)}
.crumb a:hover{color:var(--c-primary)}
.crumb .crumb-sep{color:#BFC9C6}
.crumb .crumb-cur{
  color:var(--c-ink);font-weight:600;
  max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 文章主体 ============ */
.article-section{padding:24px 0 72px}
.article-layout{padding-top:8px}
.article-main{min-width:0}
.article-head{padding-bottom:20px;border-bottom:1px solid var(--c-line)}
.article-head h1{
  font-size:clamp(26px,3.6vw,38px);
  line-height:1.32;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:.2px;
  padding-left:16px;
  border-left:4px solid var(--c-primary);
  margin:0 0 18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13.5px;color:var(--c-muted)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .meta-item::before{
  content:"";width:12px;height:12px;border:1.5px solid var(--c-muted);border-radius:3px;opacity:.65;
}
.article-meta .meta-item.is-plain::before{display:none}

.article-body{
  max-width:780px;
  margin-top:28px;
  font-size:17px;
  line-height:1.9;
  color:var(--c-body);
}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:24px;line-height:1.45;color:var(--c-ink);font-weight:700;
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--c-primary);
}
.article-body h3{font-size:20px;line-height:1.5;color:var(--c-ink);font-weight:600;margin:28px 0 12px}
.article-body h4{font-size:17px;color:var(--c-ink);font-weight:600;margin:22px 0 10px}
.article-body img{border-radius:var(--r-card);margin:24px auto;box-shadow:var(--sh-1)}
.article-body figure{margin:24px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--c-muted);margin-top:10px}
.article-body blockquote{
  margin:24px 0;padding:20px 22px;
  background:var(--c-primary-100);
  border-left:4px solid var(--c-primary);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--c-ink);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul,.article-body ol{padding-left:24px;margin:0 0 20px}
.article-body ul li{list-style:disc}
.article-body ol li{list-style:decimal}
.article-body li{margin-bottom:8px}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(15,76,70,.35);transition:border-color var(--t-fast)}
.article-body a:hover{border-bottom-color:var(--c-primary)}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;display:block;overflow-x:auto}
.article-body thead th{background:var(--c-primary-100);color:var(--c-ink);font-weight:600;text-align:left;padding:12px 14px;white-space:nowrap}
.article-body tbody td{padding:12px 14px;border-bottom:1px solid var(--c-line);vertical-align:top}
.article-body tbody tr:nth-child(even){background:#F5F8F6}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}
.article-foot-note{
  margin-top:36px;padding:18px 20px;
  border:1px dashed var(--c-line);border-radius:var(--r-card);
  font-size:14px;color:var(--c-muted);line-height:1.8;
}

.article-empty{
  height:220px;min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  border:1px dashed var(--c-line);border-radius:var(--r-card);
  background:var(--c-surface);
  text-align:center;padding:24px;margin-top:32px;
}
.article-empty h2{font-size:20px;color:var(--c-ink)}
.article-empty p{font-size:14px;color:var(--c-muted);max-width:40ch}
.article-empty .empty-icon{
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-weight:700;
}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:104px;align-self:flex-start;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:20px;
  box-shadow:var(--sh-1);
  transition:box-shadow var(--t-base),transform var(--t-base);
}
.side-card:hover{box-shadow:var(--sh-2)}
.side-title{
  font-size:15px;font-weight:700;color:var(--c-ink);
  padding-bottom:12px;margin-bottom:14px;
  border-bottom:1px solid var(--c-line);
}
.side-links li+li{border-top:1px solid var(--c-line)}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14.5px;color:var(--c-body);
  transition:color var(--t-fast),padding-left var(--t-fast);
}
.side-links a::after{content:"→";color:var(--c-muted);font-size:13px;transition:transform var(--t-fast)}
.side-links a:hover{color:var(--c-primary);padding-left:4px}
.side-links a:hover::after{transform:translateX(3px);color:var(--c-primary)}
.side-post{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-bottom:1px solid var(--c-line)}
.side-post:last-child{border-bottom:0;padding-bottom:0}
.side-post img{width:64px;height:48px;object-fit:cover;border-radius:8px;flex:0 0 auto}
.side-post strong{display:block;font-size:14px;font-weight:600;color:var(--c-ink);line-height:1.5;transition:color var(--t-fast)}
.side-post:hover strong{color:var(--c-primary)}
.side-post em{font-style:normal;font-size:12px;color:var(--c-muted)}
.side-cta{background:linear-gradient(180deg,#0F4C46 0%,#0B3A35 100%);border-color:transparent;color:rgba(255,255,255,.85)}
.side-cta .side-title{color:#fff;border-bottom-color:rgba(255,255,255,.18)}
.side-cta p{font-size:14px;color:rgba(255,255,255,.82);margin-bottom:16px}
.side-cta .link-plain{color:#fff;margin-top:14px}
.side-cta .btn-primary{margin-top:2px}

/* ============ 上一篇 / 下一篇 ============ */
.postnav{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;margin-top:48px;
}
.postnav-item{
  display:block;padding:20px;
  border:1px solid var(--c-line);border-radius:var(--r-card);
  background:var(--c-surface);box-shadow:var(--sh-1);
  transition:transform var(--t-base),box-shadow var(--t-base),border-color var(--t-base);
}
.postnav-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-100)}
.postnav-label{display:block;font-size:12px;color:var(--c-muted);letter-spacing:.5px;margin-bottom:8px}
.postnav-item strong{display:block;font-size:17px;color:var(--c-ink);font-weight:600;line-height:1.5}
.postnav-note{display:block;font-size:13.5px;color:var(--c-muted);margin-top:6px}
.postnav-item.is-next{text-align:right}

/* ============ CTA 带 ============ */
.cta-band{
  background:linear-gradient(180deg,#0F4C46 0%,#0F4C46 68%,#0B3A35 100%);
  padding:64px 0;
  color:#fff;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{color:#fff;font-size:28px;line-height:1.35}
.cta-inner p{color:rgba(255,255,255,.82);font-size:15px;margin-top:10px;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-900);color:rgba(255,255,255,.82);padding:64px 0 24px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.site-footer h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:16px;line-height:1.4}
.site-footer ul li{margin-bottom:10px}
.site-footer a{position:relative;color:rgba(255,255,255,.82);transition:color var(--t-fast)}
.site-footer a::after{
  content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;
  background:var(--c-primary-100);transition:width var(--t-base);
}
.site-footer a:hover{color:var(--c-primary-100)}
.site-footer a:hover::after{width:100%}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.f-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:9px;
  background:rgba(255,255,255,.12);color:#fff;font-weight:700;font-size:14px;
}
.f-name{color:#fff;font-size:16px;font-weight:600}
.site-footer p{color:rgba(255,255,255,.72);line-height:1.85;margin-bottom:14px;max-width:38ch}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:12.5px;color:rgba(255,255,255,.6);line-height:1.7;
}

/* ============ 动效 ============ */
.fade-in{opacity:0;transform:translateY(12px);transition:opacity 520ms ease-out,transform 520ms ease-out}
.fade-in.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .fade-in{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .article-side{position:static;top:auto;margin-top:36px}
  .cta-inner h2{font-size:24px}
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:799px){
  .article-body{font-size:16.5px}
  .article-body h2{font-size:22px}
  .postnav{grid-template-columns:1fr}
  .postnav-item.is-next{text-align:left}
}
@media (max-width:639px){
  .brand-bar{height:60px}
  .brand-text strong{font-size:15px}
  .brand-text em{display:none}
  .menu-toggle{display:inline-flex}
  .chipbar{display:none}
  .brand-actions .btn-sm{height:36px;padding:0 14px;font-size:13.5px}
  .crumb-wrap{padding:20px 0 0}
  .crumb .crumb-cur{white-space:normal;max-width:100%}
  .article-section{padding:16px 0 56px}
  .article-head h1{font-size:26px;padding-left:12px;border-left-width:3px}
  .article-body{margin-top:22px}
  .article-body table{font-size:14px}
  .cta-band{padding:48px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding:48px 0 20px}
  .footer-bottom{flex-direction:column;margin-top:30px}
}
@media (max-width:480px){
  .article-meta{gap:8px 14px;font-size:13px}
  .side-post img{width:54px;height:42px}
}

/* roulang page: category3 */
:root{
  --c-primary:#0F4C46;
  --c-primary-900:#0B3A35;
  --c-primary-100:#DDEBE8;
  --c-accent:#E2733A;
  --c-accent-800:#CF6530;
  --c-ink:#17201E;
  --c-body:#43514D;
  --c-muted:#7C8985;
  --c-line:#E3E8E6;
  --c-bg:#FAFAF7;
  --c-surface:#FFFFFF;
  --c-disabled-bg:#C8CFCC;
  --c-disabled-fg:#8A9491;
  --r-card:12px;
  --r-btn:8px;
  --r-input:8px;
  --r-badge:4px;
  --r-chip:999px;
  --sh-1:0 1px 2px rgba(23,32,30,.06);
  --sh-2:0 8px 24px rgba(23,32,30,.10);
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
  font-size:16px;line-height:1.8;color:var(--c-body);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--c-primary-900)}
img{max-width:100%;display:block;height:auto}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:56px 0}
.section--surface{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}

h1,h2,h3,h4{color:var(--c-ink);font-weight:700;line-height:1.35}
h1{font-size:40px;line-height:1.25}
h2{font-size:28px}
h3{font-size:20px;font-weight:600;line-height:1.5}
.lead{font-size:17px;line-height:1.9;color:var(--c-body)}
.muted{color:var(--c-muted)}
.small{font-size:14px}

/* ---------- 顶部品牌条 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(250,250,247,.86);backdrop-filter:saturate(140%) blur(8px);transition:background .2s var(--ease),box-shadow .2s var(--ease)}
.site-header.is-scrolled{background:rgba(250,250,247,.96);box-shadow:var(--sh-1)}
.site-header.is-scrolled .topbar{border-bottom:1px solid var(--c-line)}
.topbar{border-bottom:1px solid transparent;transition:border-color .2s var(--ease)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--c-ink)}
.brand:hover{color:var(--c-ink)}
.brand-mark{
  width:42px;height:42px;flex:0 0 42px;border-radius:10px;background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:700;color:var(--c-ink);letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:12px;color:var(--c-muted);letter-spacing:.6px}
.topbar-actions{display:flex;align-items:center;gap:10px}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  background:var(--c-surface);color:var(--c-ink);font-size:16px;cursor:pointer;transition:all .18s var(--ease);
}
.menu-toggle:hover{background:var(--c-primary-100);border-color:var(--c-primary-100)}
.mobile-panel{display:none;border-top:1px solid var(--c-line);background:var(--c-surface)}
.mobile-panel.is-open{display:block}
.mobile-panel ul{padding:8px 24px 16px}
.mobile-panel li a{display:block;padding:12px 4px;font-size:16px;color:var(--c-body);border-bottom:1px solid var(--c-line)}
.mobile-panel li:last-child a{border-bottom:none}
.mobile-panel li.is-active a{color:var(--c-primary);font-weight:600}

/* ---------- 分段标签导航 ---------- */
.chipbar{border-bottom:1px solid var(--c-line);background:rgba(250,250,247,.92)}
.nav-chips{display:flex;align-items:center;gap:8px;padding:10px 0;margin:0;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.nav-chips::-webkit-scrollbar{display:none}
.nav-chips .tabs-title{flex:0 0 auto;float:none}
.nav-chips .tabs-title>a{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;border-radius:var(--r-chip);
  font-size:15px;font-weight:500;color:var(--c-body);background:transparent;border:1px solid var(--c-line);
  transition:all .18s var(--ease);white-space:nowrap;
}
.nav-chips .tabs-title>a:hover{background:var(--c-primary-100);border-color:var(--c-primary-100);color:var(--c-primary)}
.nav-chips .tabs-title.is-active>a{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.nav-chips .tabs-title.is-active>a:hover{background:var(--c-primary-900);color:#fff}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;
  border-radius:var(--r-btn);font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--c-accent-800);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{background:#B85627;transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-100);color:var(--c-primary-900);transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--c-primary-900)}
.btn-light:hover{background:var(--c-primary-100);color:var(--c-primary-900);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--c-primary);font-size:15px}
.link-more i{transition:transform .18s var(--ease)}
.link-more:hover i{transform:translateX(4px)}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;color:#fff;background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;padding:88px 0 72px;overflow:hidden;
}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(11,58,53,.90) 0%,rgba(15,76,70,.68) 55%,rgba(15,76,70,.52) 100%)}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{color:#fff;max-width:900px}
.page-hero-sub{color:rgba(255,255,255,.86);font-size:17px;margin-top:16px;max-width:720px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.78);margin-bottom:20px}
.breadcrumb a{color:rgba(255,255,255,.86)}
.breadcrumb a:hover{color:#fff}
.breadcrumb i{font-size:10px;opacity:.7}
.hero-flag{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:1.2px;color:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.32);border-radius:var(--r-badge);padding:5px 10px;margin-bottom:18px}
.hero-flag i{color:var(--c-accent)}

/* ---------- 导语 ---------- */
.intro-wrap{max-width:800px}
.intro-wrap p+p{margin-top:20px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head .eyebrow{display:inline-block;font-size:13px;letter-spacing:1.6px;color:var(--c-primary);margin-bottom:10px;font-weight:600}
.section-head h2{margin-top:6px}
.section-head p{color:var(--c-muted);font-size:15px;margin-top:10px;max-width:620px}

/* ---------- 卡片通用 ---------- */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;height:100%;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.card-media{position:relative;overflow:hidden;background:var(--c-primary-100)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:28px}
.card-body h3{margin-bottom:12px}
.card-body p{font-size:15px;color:var(--c-body)}
.card--flat{background:var(--c-primary-100);border-color:var(--c-primary-100);box-shadow:none}
.card--flat:hover{box-shadow:var(--sh-2)}

/* 2+1 错位栅格 */
.stagger-row{margin-bottom:24px}
.stagger-row .cell{margin-bottom:24px}
.feature-card .card-media{height:280px}
.feature-card .card-body{padding:32px}
.plain-card{padding:32px;display:flex;flex-direction:column;justify-content:space-between;height:100%}
.plain-card h3{color:var(--c-primary);margin-bottom:12px}
.plain-card .plain-note{font-size:15px;color:var(--c-body);margin-bottom:20px}
.plain-card .arrow{color:var(--c-primary);font-size:18px}

.check-list{margin-top:6px}
.check-list li{display:flex;gap:10px;font-size:15px;color:var(--c-body);padding:9px 0;border-bottom:1px dashed var(--c-line)}
.check-list li:last-child{border-bottom:none}
.check-list i{color:var(--c-primary);margin-top:6px;font-size:12px}

.wide-card{display:flex;flex-wrap:wrap;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .18s var(--ease),box-shadow .18s var(--ease)}
.wide-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.wide-card .wide-media{flex:1 1 300px;min-height:260px;background:var(--c-primary-100)}
.wide-card .wide-media img{width:100%;height:100%;object-fit:cover}
.wide-card .wide-body{flex:2 1 420px;padding:36px}
.wide-card .wide-body h3{margin-bottom:14px}
.wide-card .wide-body p+p{margin-top:14px}

.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.tag{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:var(--r-badge);background:var(--c-primary-100);color:var(--c-primary);font-size:13px}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;padding-top:22px;border-top:2px solid var(--c-line)}
.step::before{content:"";position:absolute;top:-2px;left:0;width:44px;height:2px;background:var(--c-accent)}
.step .num{font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:1.4px}
.step h3{font-size:17px;margin:8px 0 8px}
.step p{font-size:14px;color:var(--c-muted);line-height:1.75}

/* ---------- 状态带 ---------- */
.info-band{background:var(--c-primary);color:#fff;padding:56px 0}
.info-band h2{color:#fff;margin-bottom:8px}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:32px}
.band-item{border-left:1px solid rgba(255,255,255,.24);padding-left:18px}
.band-item .k{font-size:13px;color:rgba(255,255,255,.7);letter-spacing:.6px}
.band-item .v{font-size:19px;font-weight:700;color:#fff;margin-top:6px;font-variant-numeric:tabular-nums}

/* ---------- 双列清单 ---------- */
.compare .cell{margin-bottom:24px}
.compare-box{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:32px;height:100%}
.compare-box h3{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.compare-box h3 i{color:var(--c-primary)}
.compare-box.alt{background:var(--c-primary-100);border-color:var(--c-primary-100)}
.compare-box.alt h3 i{color:var(--c-accent)}
.compare-box ul li{position:relative;padding:8px 0 8px 22px;font-size:15px;color:var(--c-body)}
.compare-box ul li::before{content:"";position:absolute;left:0;top:18px;width:8px;height:1px;background:var(--c-primary);opacity:.7}

/* ---------- FAQ ---------- */
.faq-layout{align-items:flex-start}
.faq-aside{position:sticky;top:120px}
.faq-aside h2{margin-bottom:12px}
.faq-aside p{font-size:15px;color:var(--c-muted)}
.faq-acc{border:none;background:transparent;margin:0}
.faq-acc .accordion-item{border:none;background:transparent}
.faq-acc .accordion-title{
  border:none;border-bottom:1px solid var(--c-line);padding:22px 44px 22px 0;position:relative;
  font-size:18px;font-weight:600;color:var(--c-ink);background:transparent;transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.faq-acc .accordion-title::before{
  content:"";position:absolute;left:-14px;top:24px;bottom:24px;width:3px;background:var(--c-accent);
  opacity:0;transition:opacity .18s var(--ease);
}
.faq-acc .accordion-item.is-active .accordion-title{color:var(--c-primary);padding-left:14px}
.faq-acc .accordion-item.is-active .accordion-title::before{opacity:1}
.faq-acc .accordion-title::after{
  content:"\f107";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;right:7px;top:50%;
  transform:translateY(-50%);color:var(--c-muted);font-size:14px;transition:transform .18s var(--ease);
}
.faq-acc .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(180deg);color:var(--c-primary)}
.faq-acc .accordion-content{border:none;border-bottom:1px solid var(--c-line);padding:0 44px 22px 14px;font-size:15px;line-height:1.85;color:var(--c-body);background:transparent}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--c-primary-900);color:#fff;padding:64px 0 56px;border-top:1px solid rgba(255,255,255,.08)}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.82);margin-top:12px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.link-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14)}
.link-chips span{font-size:13px;color:rgba(255,255,255,.6);align-self:center;margin-right:4px}
.link-chip{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 18px;border-radius:var(--r-chip);
  border:1px solid rgba(255,255,255,.34);color:rgba(255,255,255,.9);font-size:14px;transition:all .18s var(--ease);
}
.link-chip:hover{background:#fff;color:var(--c-primary-900);border-color:#fff}

/* ---------- 表单 ---------- */
.sform .field{margin-bottom:18px}
.sform label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:7px}
.sform .req{color:var(--c-accent);margin-left:3px}
.sform input,.sform select,.sform textarea{
  width:100%;height:46px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-input);
  background:#fff;font-size:15px;color:var(--c-ink);transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.sform textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.sform input:hover,.sform select:hover,.sform textarea:hover{border-color:#C9D4D1}
.sform input:focus,.sform select:focus,.sform textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(15,76,70,.12)}
.sform input.is-error,.sform textarea.is-error{border-color:#C0503A;box-shadow:0 0 0 3px rgba(192,80,58,.10)}
.form-note{display:flex;gap:10px;font-size:12px;color:var(--c-muted);margin-top:14px;line-height:1.7}
.form-note input{width:16px;height:16px;margin-top:3px;flex:0 0 16px;accent-color:var(--c-primary)}

.inline-form{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:36px}
.inline-form .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.inline-form .form-grid .full{grid-column:1 / -1}

/* ---------- Reveal ---------- */
.reveal-overlay{background:rgba(11,58,53,.55)}
.rev-modal{
  border:none;border-radius:16px;background:#fff;box-shadow:var(--sh-2);
  width:560px;max-width:calc(100% - 32px);padding:32px;top:8vh;
}
.rev-modal h3{font-size:22px;margin-bottom:8px}
.rev-modal .rev-sub{font-size:14px;color:var(--c-muted);margin-bottom:22px}
.rev-close{
  position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;border:1px solid var(--c-line);
  background:#fff;color:var(--c-muted);cursor:pointer;font-size:14px;line-height:1;transition:all .18s var(--ease);
}
.rev-close:hover{background:var(--c-primary-100);color:var(--c-primary);border-color:var(--c-primary-100)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-900);color:rgba(255,255,255,.82);padding:72px 0 28px;font-size:14px;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:24px;background:linear-gradient(180deg,rgba(15,76,70,.55),rgba(11,58,53,0))}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;position:relative}
.f-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.f-mark{width:36px;height:36px;border-radius:9px;background:var(--c-accent);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.f-name{color:#fff;font-size:16px;font-weight:700}
.footer-grid p{line-height:1.85;color:rgba(255,255,255,.76)}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600}
.footer-grid ul li{margin-bottom:10px;color:rgba(255,255,255,.78)}
.site-footer a{color:rgba(255,255,255,.8);position:relative;display:inline-block}
.site-footer a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--c-primary-100);transition:width .18s var(--ease)}
.site-footer a:hover{color:var(--c-primary-100)}
.site-footer a:hover::after{width:100%}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.6);
}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(18px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.fade-up.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .fade-up{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .section{padding:64px 0}
  .steps{grid-template-columns:repeat(2,1fr);gap:20px}
  .band-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .faq-aside{position:static;margin-bottom:24px}
  h1{font-size:32px}
}
@media screen and (max-width:767px){
  .container{padding:0 20px}
  .topbar-inner{height:60px}
  .menu-toggle{display:inline-flex;align-items:center;justify-content:center}
  .section{padding:48px 0}
  h1{font-size:28px}
  h2{font-size:22px}
  .page-hero{padding:64px 0 52px}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:28px}
  .btn{width:100%}
  .topbar-actions .btn{width:auto}
  .cta-actions .btn{width:100%}
  .wide-card .wide-media{min-height:200px}
  .wide-card .wide-body{padding:26px}
  .inline-form{padding:24px}
  .inline-form .form-grid{grid-template-columns:1fr}
  .rev-modal{padding:24px;top:4vh}
}
@media screen and (max-width:520px){
  .steps{grid-template-columns:1fr}
  .band-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .card-body{padding:22px}
  .feature-card .card-body{padding:24px}
  .brand-text strong{font-size:15px}
}