/* roulang page: index */
:root{
  --ink:#0F1A16;
  --ink-2:#1B2A24;
  --brand:#17C08A;
  --brand-deep:#0B7D5C;
  --accent:#F0A32C;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:rgba(15,26,22,.10);
  --muted:#66756E;
  --r-sm:10px;
  --r:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,26,22,.06);
  --shadow-2:0 14px 36px -16px rgba(15,26,22,.22);
  --shadow-3:0 24px 60px -24px rgba(15,26,22,.30);
  --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;
  background:var(--bg);
  color:var(--ink);
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease);}
button,input,textarea,select{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media(max-width:1399.98px){.container{max-width:1140px;}}
@media(max-width:1199.98px){.container{max-width:960px;}}
@media(max-width:991.98px){.container{max-width:720px;}}
@media(max-width:767.98px){.container{max-width:100%;padding-left:20px;padding-right:20px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  background:rgba(15,26,22,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-2);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-solid{background:var(--ink);box-shadow:var(--shadow-3);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;transition:height .24s var(--ease);}
.site-header.is-solid .header-inner{height:60px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;line-height:1.2;white-space:nowrap;}
.brand-mark{position:relative;width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand-deep));flex:0 0 auto;}
.brand-mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background:var(--ink);}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{position:relative;padding:8px 14px;font-size:15px;font-weight:500;color:rgba(255,255,255,.80);border-radius:8px;transition:color .24s var(--ease);}
.main-nav a::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);}
.main-nav a:hover{color:#fff;}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:#fff;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-search{display:flex;align-items:center;gap:8px;padding:7px 12px;border-radius:var(--r-sm);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.62);transition:border-color .24s var(--ease),background .24s var(--ease);}
.nav-search:focus-within{border-color:rgba(23,192,138,.6);background:rgba(255,255,255,.12);}
.nav-search input{width:118px;border:0;outline:0;background:transparent;color:#fff;font-size:14px;line-height:1.4;}
.nav-search input::placeholder{color:rgba(255,255,255,.5);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);color:#fff;cursor:pointer;transition:background .24s var(--ease);}
.nav-toggle:hover{background:rgba(255,255,255,.14);}

.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-sm);
  font-size:16px;font-weight:600;line-height:1.3;cursor:pointer;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.btn-main{background:var(--brand);border:1px solid var(--brand);color:var(--ink);}
.btn-main:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-main:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.32);color:#fff;}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08);}
.btn-ghost--dark{border-color:var(--line);color:var(--ink);background:transparent;}
.btn-ghost--dark:hover{border-color:var(--ink);background:rgba(15,26,22,.04);}
.btn-sm{padding:10px 18px;font-size:15px;}
.btn-block{width:100%;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-deep);}
.link-more i{transition:transform .24s var(--ease);}
.link-more:hover i{transform:translateX(4px);}
.link-more--light{color:var(--brand);}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:1055;
  background:var(--ink);color:#fff;padding:24px 20px;
  transform:translateX(102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;gap:24px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,.12);}
.drawer-head .brand-text{font-weight:700;font-size:16px;}
.drawer-head button{width:38px;height:38px;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.18);background:transparent;color:#fff;cursor:pointer;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{height:44px;display:flex;align-items:center;padding:0 4px;font-size:16px;color:rgba(255,255,255,.82);border-bottom:1px solid rgba(255,255,255,.08);}
.drawer-nav a.is-active{color:var(--brand);}
.drawer-mask{position:fixed;inset:0;background:rgba(15,26,22,.55);opacity:0;visibility:hidden;z-index:1050;transition:opacity .28s var(--ease),visibility .28s var(--ease);}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section--dark{background:var(--ink);color:rgba(255,255,255,.86);}
.section--deep{background:var(--ink-2);color:rgba(255,255,255,.86);}
.section--white{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:48px;}
.eyebrow{display:block;font-size:13px;font-weight:500;letter-spacing:.12em;color:var(--muted);margin-bottom:14px;}
.section--dark .eyebrow,.section--deep .eyebrow{color:rgba(255,255,255,.55);}
.section-head h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.24;margin-bottom:14px;}
.section-head p{color:var(--muted);max-width:62ch;}
.section--dark .section-head p,.section--deep .section-head p{color:rgba(255,255,255,.70);}
.section-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.section-head--split .section-head__text{max-width:680px;}

/* ---------- Hero ---------- */
.hero{position:relative;padding:158px 0 96px;background:var(--ink);color:#fff;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center right;opacity:.20;
}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(255,255,255,.10);}
.hero .container{position:relative;z-index:1;}
.hero h1{font-size:clamp(30px,5vw,54px);font-weight:800;line-height:1.18;letter-spacing:-.02em;margin-bottom:22px;max-width:14em;}
.hero-sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.76);max-width:56ch;margin-bottom:32px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px;}
.hero-points{display:flex;flex-direction:column;gap:14px;max-width:520px;}
.hero-points li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:rgba(255,255,255,.80);}
.hero-points li::before{content:"";width:8px;height:8px;background:var(--brand);border-radius:2px;margin-top:11px;flex:0 0 auto;}
.device-frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:4/5;box-shadow:var(--shadow-3);
  transform:translateY(-12px);
  border:1px solid rgba(255,255,255,.12);
}
.device-frame img{width:100%;height:100%;object-fit:cover;}
.device-tag{
  position:absolute;left:20px;bottom:20px;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:rgba(15,26,22,.68);color:#fff;font-size:13px;font-weight:500;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 48px;}
.pain-item{display:flex;gap:20px;padding:26px 0;border-bottom:1px solid var(--line);}
.pain-num{font-size:13px;font-weight:500;letter-spacing:.12em;color:var(--muted);padding-top:6px;font-variant-numeric:tabular-nums;flex:0 0 auto;}
.pain-item h3{font-size:19px;font-weight:700;line-height:1.45;margin-bottom:8px;}
.pain-item p{font-size:15px;color:var(--muted);}

/* ---------- 方案 ---------- */
.solution-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow-1);overflow:hidden;height:100%;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.solution-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(23,192,138,.35);}
.solution-card__figure{margin:0;aspect-ratio:16/9;overflow:hidden;}
.solution-card__figure img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.solution-card:hover .solution-card__figure img{transform:scale(1.03);}
.solution-card__body{padding:28px 30px 30px;}
.solution-card__body h3{font-size:21px;font-weight:700;margin-bottom:12px;}
.solution-card__body p{color:var(--muted);font-size:15px;margin-bottom:18px;}
.solution-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px;}
.solution-list li{position:relative;padding-left:18px;font-size:15px;color:var(--muted);line-height:1.7;}
.solution-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:2px;background:var(--brand);}
.solution-stack{display:flex;flex-direction:column;gap:24px;height:100%;}
.solution-mini{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow-1);padding:26px 28px;flex:1 1 auto;
  display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.solution-mini:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(23,192,138,.35);}
.solution-mini .icon-box{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(23,192,138,.12);color:var(--brand-deep);font-size:18px;margin-bottom:18px;
}
.solution-mini h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.solution-mini p{font-size:15px;color:var(--muted);margin-bottom:18px;}
.solution-mini .link-more{margin-top:auto;}

/* ---------- 步骤 ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:28px 24px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(23,192,138,.35);}
.step-num{font-size:28px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1;margin-bottom:16px;}
.step h3{font-size:18px;font-weight:700;margin-bottom:10px;}
.step p{font-size:15px;color:var(--muted);}

/* ---------- 数据 ---------- */
.stats-wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;align-items:center;}
.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 32px;}
.stat-value{font-size:clamp(36px,4vw,48px);font-weight:800;line-height:1;color:var(--brand);font-variant-numeric:tabular-nums;}
.stat-value .stat-suffix{font-size:18px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.65);}
.stat-value--accent{color:var(--accent);}
.stat-label{margin-top:10px;font-size:15px;color:rgba(255,255,255,.70);}
.stats-note{margin-top:28px;font-size:13px;color:rgba(255,255,255,.50);line-height:1.9;max-width:44ch;}
.stats-figure{margin:0;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:21/9;border:1px solid rgba(255,255,255,.12);}
.stats-figure img{width:100%;height:100%;object-fit:cover;}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.news-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;height:100%;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(23,192,138,.35);}
.news-card__cover{display:block;aspect-ratio:16/9;overflow:hidden;background:#E9EAE6;}
.news-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.news-card:hover .news-card__cover img{transform:scale(1.03);}
.news-card__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto;}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1.6;
  background:rgba(23,192,138,.12);color:var(--brand-deep);
}
.badge--accent{background:rgba(240,163,44,.14);color:#8A5A05;}
.news-card__body h3{font-size:18px;font-weight:700;line-height:1.5;margin:14px 0 10px;}
.news-card__body h3 a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__body h3 a:hover{color:var(--brand-deep);}
.news-card__body p{font-size:15px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px;}
.news-card__meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}
.empty-state{
  min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  text-align:center;border:1px dashed var(--line);border-radius:var(--r);background:rgba(255,255,255,.6);
}
.empty-state i{font-size:30px;color:var(--muted);}
.empty-state strong{font-size:17px;font-weight:600;}
.empty-state span{font-size:14px;color:var(--muted);}

/* ---------- 表单 ---------- */
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px;align-items:start;}
.contact-copy h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.24;margin-bottom:16px;color:#fff;}
.contact-copy p{color:rgba(255,255,255,.70);max-width:52ch;margin-bottom:24px;}
.privacy-note{display:flex;gap:12px;font-size:13px;color:rgba(255,255,255,.55);line-height:1.9;max-width:52ch;}
.privacy-note i{color:var(--brand);margin-top:5px;}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);padding:32px;
}
.form-row{margin-bottom:20px;}
.form-row label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--ink);}
.form-control{width:100%;border:1px solid var(--line);border-radius:var(--r-sm);padding:12px 14px;background:#fff;color:var(--ink);font-size:15px;line-height:1.6;transition:border-color .24s var(--ease),box-shadow .24s var(--ease);}
.form-control::placeholder{color:var(--muted);}
.form-control:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 2px rgba(23,192,138,.18);}
textarea.form-control{min-height:112px;resize:vertical;}
.checkbox-line{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);line-height:1.8;}
.checkbox-line input[type="checkbox"]{appearance:none;-webkit-appearance:none;position:relative;width:18px;height:18px;flex:0 0 auto;margin-top:4px;border:1px solid var(--line);border-radius:5px;background:#fff;cursor:pointer;transition:background .2s var(--ease),border-color .2s var(--ease);}
.checkbox-line input[type="checkbox"]:checked{background:var(--brand);border-color:var(--brand);}
.checkbox-line input[type="checkbox"]:checked::after{content:"";position:absolute;left:5px;top:1px;width:6px;height:11px;border:solid var(--ink);border-width:0 2px 2px 0;transform:rotate(45deg);}
.form-actions{display:flex;justify-content:flex-end;margin-top:6px;}
.form-success{display:none;margin-top:16px;font-size:14px;color:var(--brand-deep);background:rgba(23,192,138,.10);border:1px solid rgba(23,192,138,.30);border-radius:var(--r-sm);padding:12px 14px;}
.form-success.is-visible{display:block;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:transparent;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q:hover{color:var(--brand-deep);}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto;transition:transform .24s var(--ease);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-deep);border-radius:2px;}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-q[aria-expanded="true"] .faq-icon{transform:rotate(45deg);}
.faq-a{padding:0 0 24px;font-size:15px;color:var(--muted);max-width:76ch;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 28px;border-top:1px solid rgba(255,255,255,.10);}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.9;max-width:34ch;color:rgba(255,255,255,.60);}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.62);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;border-top:1px solid rgba(255,255,255,.10);font-size:13px;color:rgba(255,255,255,.45);}

/* ---------- 吸底 CTA ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1035;
  display:none;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));
  background:rgba(15,26,22,.96);
  border-top:1px solid rgba(255,255,255,.12);
  transform:translateY(110%);transition:transform .28s var(--ease);
}
.sticky-cta.is-visible{transform:translateY(0);}
.sticky-cta .btn-main{flex:1 1 auto;padding:12px 20px;font-size:15px;}
.sticky-cta__call{width:48px;height:48px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.24);color:#fff;}

/* ---------- 弹层 ---------- */
.modal-content{border:0;border-radius:var(--r-lg);box-shadow:var(--shadow-3);}
.modal-header{border-bottom:1px solid var(--line);padding:22px 28px;}
.modal-title{font-size:19px;font-weight:700;}
.modal-body{padding:26px 28px 28px;}
.modal-backdrop.show{background:rgba(15,26,22,.55);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);opacity:1;}
.modal.fade .modal-dialog{transform:translateY(12px);transition:transform .24s var(--ease),opacity .24s var(--ease);}
.modal.show .modal-dialog{transform:translateY(0);}
.modal .form-card{border:0;box-shadow:none;padding:0;}
.modal .form-actions .btn-main{width:100%;}
@media(min-width:576px){.modal-dialog{max-width:520px;}}

/* ---------- 响应式 ---------- */
@media(max-width:1199.98px){
  .section{padding:72px 0;}
  .stats-wrap{gap:40px;}
}
@media(max-width:991.98px){
  .main-nav,.nav-search{display:none;}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
  .hero{padding:132px 0 72px;}
  .device-frame{transform:none;margin-top:36px;max-width:420px;}
  .pain-grid{grid-template-columns:1fr;gap:0;}
  .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stats-wrap{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .contact-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media(max-width:767.98px){
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .section-head--split{flex-direction:column;align-items:flex-start;}
  .header-actions .btn-main{display:none;}
  .hero{padding:118px 0 56px;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn-main,.hero-cta .btn-ghost{width:100%;}
  .news-grid{grid-template-columns:1fr;gap:16px;}
  .steps-grid{grid-template-columns:1fr;gap:16px;}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px;}
  .form-card{padding:24px 20px;}
  .form-actions{justify-content:stretch;}
  .form-actions .btn-main{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .sticky-cta{display:flex;}
  body{padding-bottom:0;}
}
@media(max-width:575.98px){
  .hero h1{font-size:30px;}
  .pain-item{gap:14px;}
  .solution-card__body{padding:22px 20px 24px;}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;scroll-behavior:auto !important;}
  .device-frame{transform:none;}
  .solution-card:hover,.news-card:hover,.step:hover,.solution-mini:hover{transform:none;}
  .solution-card:hover .solution-card__figure img,.news-card:hover .news-card__cover img{transform:none;}
}

/* roulang page: article */
:root{
  --ink:#0F1A16;
  --ink-2:#1B2A24;
  --brand:#17C08A;
  --brand-deep:#0B7D5C;
  --accent:#F0A32C;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:rgba(15,26,22,.10);
  --muted:#66756E;
  --r-sm:10px;
  --r:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,26,22,.06);
  --shadow-2:0 14px 36px -16px rgba(15,26,22,.22);
  --shadow-3:0 24px 60px -24px rgba(15,26,22,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (max-width:1399px){.container{max-width:1140px}}
@media (max-width:991px){.container{padding:0 20px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1040;
  background:rgba(15,26,22,.60);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:var(--ink);box-shadow:var(--shadow-3)}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:76px;
  transition:height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;letter-spacing:-.01em;flex:none}
.brand-mark{
  position:relative;
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  flex:none;
}
.brand-mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:rgba(15,26,22,.88)}
.brand-text{font-size:17px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{
  position:relative;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:rgba(255,255,255,.80);
  transition:color .22s var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s var(--ease);
}
.main-nav a:hover{color:#fff}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:#fff}
.main-nav a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  padding:8px 14px;
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-search i{color:rgba(255,255,255,.62);font-size:13px}
.nav-search input{width:128px;background:transparent;border:0;outline:none;color:#fff;font-size:14px}
.nav-search input::placeholder{color:rgba(255,255,255,.55)}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(23,192,138,.18)}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid rgba(255,255,255,.20);
  border-radius:var(--r-sm);
  background:transparent;
  color:#fff;
  cursor:pointer;
  transition:background .22s var(--ease)
}
.nav-toggle:hover{background:rgba(255,255,255,.10)}

/* 阅读进度条 */
.read-progress{position:absolute;left:0;right:0;bottom:-1px;height:3px;background:rgba(255,255,255,.08)}
.read-progress span{display:block;height:100%;width:0;background:var(--brand);transition:width .12s linear}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  border:0;border-radius:var(--r-sm);
  background:var(--brand);
  color:var(--ink);
  font-size:16px;font-weight:600;
  cursor:pointer;
  transition:transform .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease),color .24s var(--ease);
}
.btn-main:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-main:active{transform:none;box-shadow:var(--shadow-1)}
.btn-main:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.btn-main.btn-sm{padding:10px 20px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:transparent;
  color:var(--ink);
  font-size:16px;font-weight:600;
  cursor:pointer;
  transition:border-color .24s var(--ease),transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease);
}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn-ghost:active{transform:none}
.btn-ghost.on-dark{border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost.on-dark:hover{border-color:#fff;background:rgba(255,255,255,.08)}

/* ---------- 徽章 / 标签 ---------- */
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  background:rgba(23,192,138,.12);
  color:var(--brand-deep);
  font-size:13px;font-weight:500;
  line-height:1.5;
}
.badge-tag.on-dark{background:rgba(23,192,138,.18);color:#7BEBC4}
.badge-accent{background:rgba(240,163,44,.14);color:#9A6410}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:#fff;
  padding:156px 0 66px;
}
.article-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.30;
}
.article-hero .hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,26,22,.94) 0%,rgba(15,26,22,.86) 60%,rgba(15,26,22,.96) 100%);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;font-weight:500;
  color:rgba(255,255,255,.58);
  margin-bottom:22px;
}
.breadcrumb-bar a{color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.breadcrumb-bar a:hover{color:var(--brand)}
.breadcrumb-bar .sep{color:rgba(255,255,255,.32)}
.breadcrumb-bar .current{color:rgba(255,255,255,.92)}
.article-hero h1{
  font-size:clamp(28px,4vw,44px);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.02em;
  max-width:22ch;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:26px;
  font-size:14px;
  color:rgba(255,255,255,.68);
}
.article-meta .vline{width:1px;height:14px;background:rgba(255,255,255,.24)}

/* ---------- 正文阅读区 ---------- */
.article-section{background:var(--surface);padding:64px 0 88px}
.article-wrap{max-width:720px;margin:0 auto}
.article-body{font-size:16px;line-height:1.9;color:var(--ink);overflow-wrap:break-word}
.article-body > * + *{margin-top:1.25em}
.article-body p{color:#22312B}
.article-body h2{
  position:relative;
  margin-top:48px;margin-bottom:16px;
  padding-left:14px;
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  line-height:1.3;
  letter-spacing:-.01em;
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:.28em;bottom:.28em;
  width:3px;border-radius:2px;background:var(--brand);
}
.article-body h3{margin-top:28px;margin-bottom:10px;font-size:20px;font-weight:700;line-height:1.4}
.article-body h4{margin-top:22px;margin-bottom:8px;font-size:17px;font-weight:700}
.article-body ul,.article-body ol{padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.4em 0}
.article-body li::marker{color:var(--brand)}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--ink)}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 20px 18px 23px;
  background:#F1F3F0;
  border-left:3px solid var(--brand);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:#33443C;
}
.article-body img{border-radius:var(--r);margin:1.6em auto;width:100%}
.article-body figure{margin:1.6em 0}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--muted)}
.article-body table{width:100%;border-collapse:collapse;border:1px solid var(--line);font-size:15px;margin:1.6em 0}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:var(--bg);font-weight:700}
.article-body tr:last-child td{border-bottom:0}
.article-body code{background:rgba(15,26,22,.06);padding:2px 6px;border-radius:6px;font-size:14px}
.article-body hr{border:0;border-top:1px solid var(--line);margin:40px 0}

/* 空态 */
.empty-state{
  min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;text-align:center;
  border:1px dashed var(--line);
  border-radius:var(--r-lg);
  padding:40px 24px;
}
.empty-state i{font-size:26px;color:var(--muted)}
.empty-state strong{font-size:18px;font-weight:700}
.empty-state p{color:var(--muted);font-size:15px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-deep);
  font-weight:600;font-size:15px;
  transition:gap .22s var(--ease),color .22s var(--ease);
}
.text-link:hover{gap:11px;color:var(--ink)}

/* ---------- 文末 CTA 卡 ---------- */
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  flex-wrap:wrap;
  margin-top:56px;
  padding:28px 32px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
}
.cta-card h3{font-size:20px;font-weight:700;margin-bottom:6px}
.cta-card p{color:var(--muted);font-size:15px;max-width:52ch}

/* ---------- 提示要点 ---------- */
.notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:56px}
.notice-item{
  padding:24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-left:4px solid var(--brand);
  border-radius:var(--r-sm);
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.notice-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(23,192,138,.35);border-left-color:var(--brand-deep)}
.notice-item .idx{display:block;font-size:13px;font-weight:500;letter-spacing:.12em;color:var(--muted);margin-bottom:10px}
.notice-item h3{font-size:17px;font-weight:700;margin-bottom:8px}
.notice-item p{font-size:15px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-section{background:var(--bg);padding:88px 0}
.section-head{margin-bottom:40px;max-width:62ch}
.section-head .eyebrow{display:block;font-size:13px;letter-spacing:.12em;color:var(--muted);margin-bottom:12px}
.section-head h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.24;letter-spacing:-.02em}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px}
.faq-list{max-width:860px}
.faq-list .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-list .accordion-button{
  background:transparent;
  padding:20px 44px 20px 0;
  font-size:17px;font-weight:600;color:var(--ink);
  box-shadow:none;
  border-radius:0;
}
.faq-list .accordion-button:not(.collapsed){color:var(--brand-deep);background:transparent;box-shadow:none}
.faq-list .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-list .accordion-button::after{
  content:"+";
  background-image:none;
  font-size:22px;font-weight:400;line-height:1;
  width:auto;height:auto;
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-deep);
  transition:transform .24s var(--ease);
  transform:none;
}
.faq-list .accordion-button:not(.collapsed)::after{content:"×";transform:rotate(180deg)}
.faq-list .accordion-body{padding:0 40px 22px 0;font-size:15px;line-height:1.8;color:var(--muted)}

/* ---------- 相关入口 ---------- */
.related-section{background:var(--bg);padding:0 0 88px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{
  display:flex;flex-direction:column;gap:12px;
  padding:26px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(23,192,138,.35)}
.related-card .thumb{border-radius:var(--r-sm);overflow:hidden;aspect-ratio:16/9;background:var(--bg)}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.related-card:hover .thumb img{transform:scale(1.03)}
.related-card h3{font-size:17px;font-weight:700;line-height:1.5}
.related-card p{font-size:15px;color:var(--muted)}
.related-card .meta-line{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);margin-top:auto}

/* ---------- 表单 ---------- */
.lead-section{background:var(--ink);color:#fff;padding:88px 0}
.lead-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.lead-copy h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.24;letter-spacing:-.02em;margin-bottom:16px}
.lead-copy p{color:rgba(255,255,255,.72);font-size:16px;max-width:52ch}
.lead-points{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.lead-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.80)}
.lead-points li::before{content:"";width:8px;height:8px;margin-top:9px;border-radius:2px;background:var(--brand);flex:none}
.form-card{
  background:var(--surface);
  color:var(--ink);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);
  padding:32px;
}
.form-card h3{font-size:20px;font-weight:700;margin-bottom:20px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field input[type="text"],
.field input[type="tel"],
.field textarea{
  width:100%;
  padding:12px 14px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:var(--surface);
  color:var(--ink);
  outline:none;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field textarea{min-height:112px;resize:vertical}
.field input:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(23,192,138,.18)}
.field input::placeholder,.field textarea::placeholder{color:var(--muted)}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--muted);margin:4px 0 20px}
.check-row input{
  appearance:none;-webkit-appearance:none;
  width:18px;height:18px;flex:none;margin-top:4px;
  border:1px solid var(--line);border-radius:5px;background:var(--surface);
  cursor:pointer;position:relative;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.check-row input:checked{background:var(--brand);border-color:var(--brand)}
.check-row input:checked::after{
  content:"";position:absolute;left:5px;top:1px;width:5px;height:10px;
  border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:rotate(42deg);
}
.form-note{font-size:13px;color:var(--muted);margin-top:12px}
.form-actions{display:flex;justify-content:flex-end}
.form-actions .btn-main{width:auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 28px;border-top:1px solid rgba(255,255,255,.10)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:34ch}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li,.footer-col a{font-size:14px}
.footer-col a{color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.10);
  font-size:13px;color:rgba(255,255,255,.54);
}

/* ---------- 弹层 ---------- */
.modal-backdrop.show{background-color:rgba(15,26,22,.55);opacity:1;backdrop-filter:blur(2px)}
#leadModal .modal-content{border:0;border-radius:var(--r-lg);box-shadow:var(--shadow-3);overflow:hidden}
#leadModal .modal-header{border-bottom:1px solid var(--line);padding:20px 26px}
#leadModal .modal-title{font-size:18px;font-weight:700}
#leadModal .modal-body{padding:24px 26px 28px}
#leadModal .btn-close{opacity:.5}
#leadModal .btn-close:hover{opacity:1}
.modal.fade .modal-dialog{transform:translateY(12px);transition:transform .28s var(--ease),opacity .28s var(--ease)}
.modal.show .modal-dialog{transform:none}

/* ---------- 移动抽屉 / 吸底 ---------- */
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:290px;max-width:86vw;
  background:var(--ink);
  color:#fff;
  z-index:1060;
  padding:24px 22px;
  transform:translateX(100%);
  transition:transform .28s var(--ease);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.mobile-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.mobile-drawer .drawer-close{background:transparent;border:0;color:#fff;font-size:20px;cursor:pointer}
.mobile-drawer a.drawer-link{
  display:flex;align-items:center;
  min-height:44px;
  padding:0 4px;
  font-size:15px;
  color:rgba(255,255,255,.82);
  border-bottom:1px solid rgba(255,255,255,.10);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.mobile-drawer a.drawer-link:hover,.mobile-drawer a.drawer-link.is-active{color:#fff;padding-left:10px}
.drawer-veil{position:fixed;inset:0;background:rgba(15,26,22,.55);z-index:1050;opacity:0;pointer-events:none;transition:opacity .28s var(--ease)}
.drawer-veil.is-open{opacity:1;pointer-events:auto}
.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1035;
  display:none;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(15,26,22,.96);
  border-top:1px solid rgba(255,255,255,.12);
  transform:translateY(110%);
  transition:transform .28s var(--ease);
}
.mobile-cta.is-visible{transform:translateY(0)}
.mobile-cta .btn-main{flex:1}
.mobile-cta .icon-btn{
  width:48px;height:48px;flex:none;
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.24);border-radius:var(--r-sm);
  color:#fff;background:transparent;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .notice-grid{grid-template-columns:repeat(2,1fr)}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .main-nav{display:none}
  .nav-search{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-inner{gap:16px}
  .article-hero{padding:132px 0 54px}
  .article-section{padding:52px 0 68px}
  .lead-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .faq-section,.lead-section{padding:64px 0}
  .related-section{padding-bottom:64px}
}
@media (max-width:767px){
  .notice-grid{grid-template-columns:1fr;gap:16px}
  .related-grid{grid-template-columns:1fr}
  .article-hero{padding:120px 0 46px}
  .article-hero h1{max-width:none}
  .form-card{padding:24px}
  .cta-card{padding:24px}
  .form-actions{justify-content:stretch}
  .form-actions .btn-main{width:100%}
  .mobile-cta{display:flex}
  .site-footer{padding-bottom:96px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:575px){
  .container{padding:0 16px}
  .brand-text{font-size:15px}
  .btn-main{width:100%}
  .header-actions .btn-main.btn-sm{display:none}
  .faq-list .accordion-button{padding-right:36px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category2 */
:root{
  --ink:#0F1A16;
  --ink-2:#1B2A24;
  --brand:#17C08A;
  --brand-deep:#0B7D5C;
  --accent:#F0A32C;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:rgba(15,26,22,.10);
  --muted:#66756E;
  --r-sm:10px;
  --r:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,26,22,.06);
  --shadow-2:0 14px 36px -16px rgba(15,26,22,.22);
  --shadow-3:0 24px 60px -24px rgba(15,26,22,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);}
button,input,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(30px,5vw,54px);font-weight:800;line-height:1.18;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.24;letter-spacing:-.01em;}
h3{font-size:20px;font-weight:700;line-height:1.4;}
p{font-size:16px;line-height:1.8;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
.muted{color:var(--muted);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:500;letter-spacing:.12em;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.sec-head{max-width:760px;margin-bottom:40px;}
.sec-head .lead{margin-top:14px;color:var(--muted);max-width:62ch;}
.sec{padding:96px 0;}
.sec-dark{background:var(--ink);color:#F2F4F1;}
.sec-dark .muted,.sec-dark .lead{color:rgba(242,244,241,.68);}
.sec-dark .eyebrow{color:rgba(242,244,241,.55);}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* 按钮 */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:var(--ink);
  font-size:16px;font-weight:600;line-height:1;
  padding:14px 28px;border:1px solid transparent;border-radius:var(--r-sm);
  cursor:pointer;
  transition:transform .24s var(--ease),background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-main:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-main:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--ink);
  font-size:16px;font-weight:600;line-height:1;
  padding:14px 28px;border:1px solid var(--line);border-radius:var(--r-sm);
  cursor:pointer;
  transition:transform .24s var(--ease),border-color .24s var(--ease),background-color .24s var(--ease);
}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px);}
.btn-ghost-light{color:#F2F4F1;border-color:rgba(255,255,255,.28);}
.btn-ghost-light:hover{border-color:#fff;background:rgba(255,255,255,.06);}
.btn-sm{padding:10px 18px;font-size:14px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand-deep);
  border-bottom:1px solid rgba(23,192,138,.35);padding-bottom:2px;
}
.link-arrow:hover{color:var(--ink);border-color:var(--ink);}
.link-arrow i{transition:transform .24s var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(15,26,22,.55);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-2);
  transition:background-color .24s var(--ease),height .24s var(--ease),box-shadow .24s var(--ease);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:var(--nav-h);
  transition:height .24s var(--ease);
}
.site-header.is-scrolled{background:var(--ink);box-shadow:var(--shadow-3);}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:#F2F4F1;font-weight:700;letter-spacing:-.01em;}
.brand-mark{
  width:14px;height:14px;border-radius:4px;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(23,192,138,.18);
  flex:0 0 auto;
}
.brand-text{font-size:17px;white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;
  display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:rgba(242,244,241,.78);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left center;
  transition:transform .24s var(--ease);
}
.main-nav a:hover{color:#fff;}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:#fff;font-weight:600;box-shadow:inset 0 -2px 0 var(--brand);}
.header-actions{display:flex;align-items:center;gap:12px;}
.nav-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;min-width:200px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-sm);
  transition:border-color .24s var(--ease),background-color .24s var(--ease);
}
.nav-search:focus-within{border-color:rgba(23,192,138,.55);background:rgba(255,255,255,.12);}
.nav-search i{color:rgba(242,244,241,.6);font-size:13px;}
.nav-search input{
  width:100%;border:0;background:transparent;outline:none;
  color:#F2F4F1;font-size:14px;
}
.nav-search input::placeholder{color:rgba(242,244,241,.5);}
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-sm);color:#F2F4F1;cursor:pointer;
  transition:background-color .24s var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.16);}

/* 紧凑页头 */
.page-head{
  position:relative;
  background:var(--ink);
  color:#F2F4F1;
  padding:calc(var(--nav-h) + 64px) 0 72px;
  overflow:hidden;
}
.page-head::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(23,192,138,.20),rgba(23,192,138,0) 70%);
  pointer-events:none;
}
.page-head .crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:rgba(242,244,241,.6);margin-bottom:20px;
  font-variant-numeric:tabular-nums;
}
.page-head .crumb a:hover{color:var(--brand);}
.page-head .crumb .sep{opacity:.5;}
.page-head .crumb .cur{color:rgba(242,244,241,.9);}
.page-head h1{color:#fff;max-width:20ch;}
.page-head .head-sub{margin-top:20px;max-width:56ch;color:rgba(242,244,241,.72);}
.head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.head-meta{
  display:flex;flex-wrap:wrap;gap:28px;margin-top:40px;padding-top:28px;
  border-top:1px solid rgba(255,255,255,.10);
}
.head-meta div{min-width:150px;}
.head-meta strong{
  display:block;font-size:20px;font-weight:700;color:var(--brand);
  font-variant-numeric:tabular-nums;line-height:1.3;
}
.head-meta span{font-size:13px;color:rgba(242,244,241,.6);}

/* 编号列表 */
.num-list{border-top:1px solid var(--line);}
.num-list li{
  display:grid;grid-template-columns:88px 1fr;gap:28px;
  padding:36px 0;border-bottom:1px solid var(--line);
  transition:background-color .24s var(--ease);
}
.num-list li:hover{background:rgba(23,192,138,.04);}
.num-list .num{
  font-size:28px;font-weight:800;color:var(--brand);line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.num-list .num-body h3{margin-bottom:10px;}
.num-list .num-body p{color:var(--muted);max-width:66ch;}
.num-list .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:500;
  background:rgba(23,192,138,.12);color:var(--brand-deep);
}
.tag-accent{background:rgba(240,163,44,.14);color:#8A5A0B;}

/* 宽图 */
.figure-wide{max-width:1240px;margin:0 auto;padding:0 24px;}
.figure-wide figure{margin:0;}
.figure-wide img{
  width:100%;aspect-ratio:21/9;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--shadow-2);
}
.figure-wide figcaption{
  margin-top:14px;text-align:center;font-size:13px;color:var(--muted);
}

/* 数据面板 */
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px;
}
.stat-card{
  background:var(--ink-2);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r);
  padding:28px 24px;
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.stat-card:hover{transform:translateY(-4px);border-color:rgba(23,192,138,.35);}
.stat-card .val{
  font-size:44px;font-weight:800;line-height:1.1;color:var(--brand);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat-card .val .unit{font-size:20px;font-weight:600;margin-left:4px;}
.stat-card .lab{margin-top:12px;font-size:15px;font-weight:600;color:#F2F4F1;}
.stat-card .sub{margin-top:6px;font-size:13px;color:rgba(242,244,241,.6);}
.stat-note{
  margin-top:28px;font-size:13px;color:rgba(242,244,241,.6);
  display:flex;align-items:flex-start;gap:10px;
}
.stat-note i{color:var(--accent);margin-top:6px;}

/* 问答双列 */
.qa-list{border-top:1px solid var(--line);}
.qa-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.35fr);gap:40px;
  padding:32px 0;border-bottom:1px solid var(--line);
  transition:background-color .24s var(--ease);
}
.qa-row:hover{background:rgba(23,192,138,.05);}
.qa-q{display:flex;gap:14px;align-items:flex-start;}
.qa-q i{color:var(--brand);font-size:15px;margin-top:8px;}
.qa-q h3{font-size:17px;font-weight:600;}
.qa-a{color:var(--muted);font-size:15.5px;}

/* 表单 */
.form-wrap{
  display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:56px;align-items:start;
}
.form-side h2{max-width:16ch;}
.form-side p{margin-top:18px;color:var(--muted);max-width:44ch;}
.form-points{margin-top:28px;display:flex;flex-direction:column;gap:14px;}
.form-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--muted);}
.form-points i{color:var(--brand);margin-top:7px;font-size:13px;}
.form-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-2);
  padding:32px;
}
.field{margin-bottom:20px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.field input[type="text"],
.field input[type="tel"],
.field textarea{
  width:100%;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:12px 14px;
  background:#fff;
  outline:none;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.field textarea{min-height:120px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:var(--muted);}
.field input:focus,.field textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 2px rgba(23,192,138,.18);
}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);}
.check input{
  appearance:none;-webkit-appearance:none;
  width:18px;height:18px;flex:0 0 auto;margin-top:4px;
  border:1px solid var(--line);border-radius:4px;background:#fff;cursor:pointer;
  transition:background-color .2s var(--ease),border-color .2s var(--ease);
}
.check input:checked{background:var(--brand);border-color:var(--brand);}
.check input:checked::after{
  content:"";display:block;width:5px;height:9px;margin:2px auto 0;
  border:solid var(--ink);border-width:0 2px 2px 0;transform:rotate(45deg);
}
.form-actions{margin-top:24px;display:flex;justify-content:flex-end;gap:12px;}
.form-msg{margin-top:16px;font-size:14px;color:var(--brand-deep);display:none;}
.form-msg.is-on{display:block;}

/* 页脚 */
.site-footer{background:var(--ink);color:rgba(242,244,241,.72);padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;max-width:36ch;color:rgba(242,244,241,.62);}
.footer-col h4{font-size:15px;font-weight:600;color:#F2F4F1;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li{font-size:14.5px;color:rgba(242,244,241,.62);}
.footer-col a{color:rgba(242,244,241,.72);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0 28px;font-size:13px;color:rgba(242,244,241,.5);
  font-variant-numeric:tabular-nums;
}

/* 弹层 */
.modal-backdrop.show{background:rgba(15,26,22,.55);}
.modal-backdrop{--bs-backdrop-opacity:.55;backdrop-filter:blur(2px);}
.lead-modal .modal-content{
  border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-3);padding:8px;
}
.lead-modal .modal-header{border-bottom:1px solid var(--line);padding:20px 20px 16px;}
.lead-modal .modal-title{font-size:19px;font-weight:700;}
.lead-modal .modal-body{padding:22px 20px 24px;}
.lead-modal .btn-close{opacity:.5;}
.lead-modal .btn-close:hover{opacity:1;}

/* 移动端吸底 */
.mobile-cta{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  height:56px;padding:0 16px calc(0px + env(safe-area-inset-bottom));
  background:var(--ink);
  border-top:1px solid rgba(255,255,255,.10);
  align-items:center;justify-content:space-between;gap:12px;
  transform:translateY(100%);
  transition:transform .28s var(--ease);
}
.mobile-cta.is-on{transform:translateY(0);}
.mobile-cta strong{color:#F2F4F1;font-size:14px;font-weight:600;}
.mobile-cta .btn-main{padding:10px 18px;font-size:14px;}

/* 进入动画 */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.js .reveal.is-in{opacity:1;transform:none;}

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

@media (max-width:1399px){
  .container{max-width:1140px;}
  .figure-wide{max-width:1140px;}
}
@media (max-width:1199px){
  .container,.figure-wide{max-width:1000px;}
  .nav-search{min-width:160px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .sec{padding:72px 0;}
  .form-wrap{grid-template-columns:1fr;gap:36px;}
  .qa-row{grid-template-columns:1fr;gap:14px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .sec{padding:56px 0;}
  .container,.figure-wide{padding:0 18px;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;top:var(--nav-h);right:0;bottom:0;
    width:min(320px,86vw);
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink);
    border-left:1px solid rgba(255,255,255,.10);
    padding:16px;
    transform:translateX(100%);
    transition:transform .28s var(--ease);
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0);}
  .main-nav a{
    height:44px;border-radius:var(--r-sm);
    color:rgba(242,244,241,.86);
    font-size:16px;
  }
  .main-nav a::after{display:none;}
  .main-nav a.is-active{background:rgba(23,192,138,.14);color:#fff;box-shadow:inset 2px 0 0 var(--brand);}
  .header-actions .btn-main{display:none;}
  .page-head{padding:calc(var(--nav-h) + 40px) 0 52px;}
  .head-actions .btn-main,.head-actions .btn-ghost{width:100%;}
  .num-list li{grid-template-columns:1fr;gap:12px;padding:28px 0;}
  .num-list .num{font-size:24px;}
  .stat-grid{grid-template-columns:1fr;gap:16px;}
  .figure-wide img{aspect-ratio:16/10;}
  .form-card{padding:24px 20px;}
  .form-actions{flex-direction:column;}
  .form-actions .btn-main{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
  .mobile-cta{display:flex;}
  body{padding-bottom:56px;}
}
@media (max-width:575px){
  h1{font-size:clamp(26px,8vw,32px);}
  .sec-head{margin-bottom:28px;}
  .head-meta{gap:18px;}
  .head-meta div{min-width:120px;}
}

/* roulang page: category1 */
:root{
  --ink:#0F1A16;
  --ink-2:#1B2A24;
  --brand:#17C08A;
  --brand-deep:#0B7D5C;
  --accent:#F0A32C;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:rgba(15,26,22,.10);
  --muted:#66756E;
  --r-sm:10px;
  --r:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,26,22,.06);
  --shadow-2:0 14px 36px -16px rgba(15,26,22,.22);
  --shadow-3:0 24px 60px -24px rgba(15,26,22,.30);
  --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;
  padding-top:76px;
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei','Noto Sans SC',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand-deep);}
img{max-width:100%;display:block;}
button,input,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(15,26,22,.72);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-2);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-solid{background:var(--ink);box-shadow:var(--shadow-3);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;transition:height .24s var(--ease);}
.site-header.is-solid .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap;}
.brand:hover{color:#fff;}
.brand-mark{width:10px;height:10px;border-radius:3px;background:var(--brand);box-shadow:0 0 0 4px rgba(23,192,138,.16);flex:none;}
.main-nav{display:flex;align-items:center;gap:30px;}
.main-nav a{
  position:relative;color:rgba(255,255,255,.78);font-size:15px;font-weight:500;padding:6px 0;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.main-nav a:hover{color:#fff;}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:#fff;font-weight:600;}
.main-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1px solid rgba(255,255,255,.18);border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);color:rgba(255,255,255,.7);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-search:focus-within{border-color:rgba(23,192,138,.6);background:rgba(255,255,255,.10);}
.nav-search i{font-size:13px;}
.nav-search input{
  width:130px;border:0;background:transparent;color:#fff;font-size:14px;outline:none;
}
.nav-search input::placeholder{color:rgba(255,255,255,.5);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-sm);background:rgba(255,255,255,.06);color:#fff;font-size:16px;
  align-items:center;justify-content:center;cursor:pointer;transition:background .2s var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.14);}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--brand);color:var(--ink);font-weight:600;font-size:16px;
  padding:14px 28px;border:1px solid transparent;border-radius:var(--r-sm);
  cursor:pointer;transition:transform .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease),color .24s var(--ease);
}
.btn-main:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-main:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--ink);font-weight:600;font-size:16px;
  padding:14px 28px;border:1px solid var(--line);border-radius:var(--r-sm);cursor:pointer;
  transition:border-color .24s var(--ease),transform .24s var(--ease),background .24s var(--ease);
}
.btn-ghost:hover{border-color:var(--ink);background:rgba(15,26,22,.03);transform:translateY(-2px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-ghost-light{color:#fff;border-color:rgba(255,255,255,.28);}
.btn-ghost-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;background:var(--ink);color:#fff;padding:64px 0 72px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.crumb{font-size:13px;font-weight:500;color:rgba(255,255,255,.55);margin-bottom:22px;}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:var(--brand);}
.crumb span.sep{margin:0 8px;color:rgba(255,255,255,.32);}
.crumb .current{color:rgba(255,255,255,.9);}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.18;letter-spacing:-.02em;
  max-width:16em;
}
.page-hero .lead{
  margin-top:18px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.72);max-width:62ch;
}
.page-hero .hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-meta{
  margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:36px;
}
.hero-meta div{font-size:13px;color:rgba(255,255,255,.55);}
.hero-meta strong{display:block;font-size:22px;font-weight:700;color:var(--brand);letter-spacing:-.01em;}

/* ---------- 主体两栏 ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.cat-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:64px;align-items:start;}
.cat-toc{position:sticky;top:100px;}
.cat-toc .toc-title{
  font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--muted);
  padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:10px;
}
.cat-toc a{
  display:block;padding:11px 0 11px 16px;border-left:2px solid transparent;
  font-size:14px;font-weight:500;color:var(--muted);line-height:1.5;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.cat-toc a:hover{color:var(--ink);background:rgba(23,192,138,.05);}
.cat-toc a.is-current{border-left-color:var(--brand);color:var(--ink);font-weight:700;}
.toc-cta{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);}
.toc-cta .btn-main{width:100%;padding:12px 18px;font-size:15px;}

.content-flow{max-width:760px;}
.content-block{padding-bottom:12px;scroll-margin-top:110px;}
.content-block + .content-block{margin-top:56px;padding-top:56px;border-top:1px solid var(--line);}
.block-index{
  font-size:13px;font-weight:500;letter-spacing:.12em;color:var(--muted);
  display:block;margin-bottom:10px;
}
.content-block h2{
  font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em;
  padding-left:14px;position:relative;margin-bottom:18px;
}
.content-block h2::before{
  content:"";position:absolute;left:0;top:.28em;width:3px;height:20px;background:var(--brand);border-radius:2px;
}
.content-block p{color:#33403A;margin-bottom:16px;}
.content-block p:last-child{margin-bottom:0;}
.plain-list{margin:20px 0 6px;display:grid;gap:12px;}
.plain-list li{
  position:relative;padding-left:22px;color:#33403A;
  border-bottom:1px solid var(--line);padding-bottom:12px;
}
.plain-list li:last-child{border-bottom:0;padding-bottom:0;}
.plain-list li::before{
  content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;border-radius:2px;background:var(--brand);
}
.step-list{margin:22px 0 0;display:grid;gap:18px;}
.step-list li{display:flex;gap:18px;align-items:flex-start;}
.step-list .step-no{
  flex:none;font-size:26px;font-weight:700;color:var(--brand);line-height:1.2;letter-spacing:-.02em;
}
.step-list h3{font-size:17px;font-weight:700;margin-bottom:4px;}
.step-list p{font-size:15px;color:var(--muted);margin:0;}

.point-card{
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:var(--r);padding:26px 28px;box-shadow:var(--shadow-1);margin:24px 0;
}
.point-card h3{font-size:18px;font-weight:700;margin-bottom:6px;}
.point-card p{font-size:15px;color:var(--muted);margin:0;}
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:26px 0;}

.wide-figure{margin:44px 0 8px;}
.wide-figure img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-2);}
.wide-figure figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:12px;}

.note-strip{
  background:var(--ink);color:#fff;border-radius:var(--r);padding:28px 32px;margin:28px 0;
}
.note-strip h3{font-size:18px;font-weight:700;margin-bottom:10px;color:#fff;}
.note-strip p{color:rgba(255,255,255,.72);font-size:15px;margin:0;}
.note-strip ul{margin-top:14px;display:grid;gap:10px;}
.note-strip li{color:rgba(255,255,255,.8);font-size:15px;padding-left:20px;position:relative;}
.note-strip li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--brand);}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--bg);}
.faq-head{max-width:720px;margin-bottom:40px;}
.faq-head h2{
  font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.24;letter-spacing:-.01em;
}
.faq-head p{margin-top:12px;color:var(--muted);max-width:62ch;}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;}
.accordion-button{
  background:transparent;color:var(--ink);font-size:17px;font-weight:600;line-height:1.5;
  padding:22px 44px 22px 0;border-radius:0;box-shadow:none;
}
.accordion-button:not(.collapsed){color:var(--ink);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;outline:2px solid rgba(23,192,138,.35);outline-offset:-2px;}
.accordion-button::after{display:none;}
.accordion-button .q-icon{
  position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:15px;color:var(--brand-deep);
  transition:transform .24s var(--ease);
}
.accordion-button:not(.collapsed) .q-icon{transform:translateY(-50%) rotate(45deg);}
.accordion-body{padding:0 0 26px;font-size:15px;line-height:1.8;color:var(--muted);max-width:70ch;}

/* ---------- 表单区 ---------- */
.lead-section{padding:96px 0;background:#F1F3F0;border-top:1px solid var(--line);}
.lead-grid{display:grid;grid-template-columns:minmax(0,1fr) 480px;gap:64px;align-items:start;}
.lead-copy h2{
  font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.26;letter-spacing:-.01em;max-width:14em;
}
.lead-copy p{margin-top:16px;color:var(--muted);max-width:52ch;}
.lead-points{margin-top:28px;display:grid;gap:12px;}
.lead-points li{position:relative;padding-left:22px;font-size:15px;color:#33403A;}
.lead-points li::before{
  content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;border-radius:2px;background:var(--brand);
}
.privacy-note{margin-top:26px;font-size:13px;color:var(--muted);line-height:1.7;max-width:48ch;}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--shadow-2);
}
.form-card .field{margin-bottom:18px;}
.form-card label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.form-card input[type="text"],
.form-card input[type="tel"],
.form-card textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:#fff;font-size:15px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-card input::placeholder,.form-card textarea::placeholder{color:var(--muted);}
.form-card input:focus,.form-card textarea:focus{
  border-color:var(--brand);box-shadow:0 0 0 2px rgba(23,192,138,.18);
}
.form-card textarea{resize:vertical;min-height:120px;line-height:1.7;}
.check-row{display:flex;gap:10px;align-items:flex-start;margin:6px 0 20px;}
.check-row input[type="checkbox"]{
  appearance:none;-webkit-appearance:none;width:18px;height:18px;flex:none;margin-top:3px;
  border:1px solid rgba(15,26,22,.28);border-radius:5px;background:#fff;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.check-row input[type="checkbox"]:checked{
  background:var(--brand);border-color:var(--brand);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%230F1A16' d='M6.2 11.4 3.4 8.6l1.1-1.1 1.7 1.7 4.3-4.3 1.1 1.1z'/%3E%3C/svg%3E");
  background-size:16px 16px;background-position:center;background-repeat:no-repeat;
}
.check-row span{font-size:13px;color:var(--muted);line-height:1.6;}
.form-card .btn-main{width:100%;}
.form-tip{
  margin-top:14px;font-size:13px;color:var(--brand-deep);background:rgba(23,192,138,.12);
  border-radius:var(--r-sm);padding:10px 14px;
}
.form-tip[hidden]{display:none;}

/* ---------- 弹层 ---------- */
.modal-backdrop.show{opacity:.55;background:#0F1A16;}
.modal-backdrop{background:#0F1A16;}
.modal-backdrop.show{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);}
.modal-dialog{max-width:520px;}
.modal-content{
  border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-3);
  background:var(--surface);padding:4px;
}
.modal-content .modal-header{border-bottom:1px solid var(--line);padding:20px 24px;}
.modal-content .modal-title{font-size:18px;font-weight:700;}
.modal-content .modal-body{padding:24px;}
.modal-content .modal-footer{border-top:0;padding:0 24px 22px;justify-content:flex-start;}
.modal-content .btn-close{opacity:.5;transition:opacity .2s var(--ease);}
.modal-content .btn-close:hover{opacity:1;}
.modal.fade .modal-dialog{transform:translateY(12px);transition:transform .24s var(--ease),opacity .24s var(--ease);}
.modal.show .modal-dialog{transform:none;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 26px;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand .brand{color:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:34ch;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col ul{display:grid;gap:12px;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.62);}
.footer-col a{color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  padding-top:22px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 移动端吸底 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:1035;
  height:calc(56px + env(safe-area-inset-bottom));
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  background:rgba(15,26,22,.96);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-top:1px solid rgba(255,255,255,.12);
  align-items:center;gap:12px;
  transform:translateY(110%);transition:transform .28s var(--ease);
}
.mobile-bar.is-show{transform:none;}
.mobile-bar .btn-main{flex:1;padding:12px 18px;font-size:15px;}
.mobile-bar .bar-call{
  width:44px;height:44px;flex:none;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
}

/* ---------- 响应式 ---------- */
@media (max-width:1399.98px){
  .container{max-width:1140px;}
}
@media (max-width:1199.98px){
  .cat-layout{gap:44px;}
  .lead-grid{grid-template-columns:minmax(0,1fr) 420px;gap:44px;}
}
@media (max-width:991.98px){
  body{padding-top:70px;}
  .header-inner{height:70px;}
  .site-header.is-solid .header-inner{height:60px;}
  .nav-toggle{display:inline-flex;}
  .nav-search{display:none;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:284px;max-width:84vw;
    background:var(--ink);flex-direction:column;align-items:stretch;gap:0;
    padding:88px 24px 24px;z-index:1040;
    box-shadow:var(--shadow-3);
    transform:translateX(101%);transition:transform .28s var(--ease);
  }
  .main-nav.is-open{transform:none;}
  .main-nav a{
    height:44px;display:flex;align-items:center;color:rgba(255,255,255,.82);
    border-bottom:1px solid rgba(255,255,255,.08);font-size:15px;padding:0;
  }
  .main-nav a::after{display:none;}
  .main-nav a.is-active{color:var(--brand);font-weight:700;}
  .cat-layout{grid-template-columns:minmax(0,1fr);gap:36px;}
  .cat-toc{position:static;border:1px solid var(--line);border-radius:var(--r);background:#fff;padding:20px 22px;box-shadow:var(--shadow-1);}
  .cat-toc .toc-title{margin-bottom:6px;}
  .toc-cta{display:none;}
  .content-flow{max-width:100%;}
  .lead-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767.98px){
  body{padding-bottom:72px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .page-hero{padding:44px 0 52px;}
  .page-hero h1{font-size:clamp(28px,7vw,36px);}
  .hero-meta{gap:24px;}
  .hero-meta strong{font-size:19px;}
  .point-grid{grid-template-columns:minmax(0,1fr);}
  .lead-section{padding:56px 0;}
  .form-card{padding:24px;}
  .mobile-bar{display:flex;}
  .site-footer{padding:52px 0 22px;}
}
@media (max-width:575.98px){
  .container{padding:0 18px;}
  .page-hero .hero-actions .btn-main,
  .page-hero .hero-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .content-block h2{font-size:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}