/* roulang page: index */
:root{
  --green:#123C2E;
  --green-deep:#0C2A20;
  --green-soft:rgba(18,60,46,.08);
  --orange:#F04E23;
  --orange-dark:#D63F17;
  --lime:#C6F24E;
  --bg:#F7F5F0;
  --bg-alt:#F1EEE7;
  --white:#FFFFFF;
  --text:#14201B;
  --muted:#5A6B63;
  --line:rgba(18,60,46,.12);
  --line-light:rgba(247,245,240,.14);
  --radius-card:16px;
  --radius-img:14px;
  --radius-pill:999px;
  --radius-badge:6px;
  --radius-input:10px;
  --shadow-sm:0 1px 2px rgba(12,42,32,.06),0 12px 32px -12px rgba(12,42,32,.16);
  --shadow-lg:0 2px 6px rgba(12,42,32,.08),0 26px 52px -18px rgba(12,42,32,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:180ms;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--green);text-decoration:none}
a:hover{color:var(--orange)}
button{font:inherit;color:inherit}
input,textarea{font:inherit}
h1,h2,h3,h4{margin:0;line-height:1.12;letter-spacing:-.02em;font-weight:800}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.mono{font-family:ui-monospace,Consolas,"SFMono-Regular",monospace}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:var(--green-deep);color:var(--bg)}
.section-dark h2,.section-dark h3{color:var(--bg)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head h2{font-size:clamp(24px,3.2vw,40px);position:relative;padding-left:22px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.22em;width:8px;height:8px;background:var(--orange);border-radius:2px}
.sec-head p{margin-top:14px;color:var(--muted);font-size:16px;max-width:640px}
.section-dark .sec-head p{color:rgba(247,245,240,.7)}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border:1px solid transparent;border-radius:var(--radius-pill);
  font-size:15px;font-weight:700;cursor:pointer;background:none;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
  text-align:center;
}
.btn svg{width:16px;height:16px;transition:transform var(--dur) var(--ease);flex:none}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark);color:#fff}
.btn-ghost{border-color:var(--green);color:var(--green);background:transparent}
.btn-ghost:hover{background:var(--green-soft);color:var(--green)}
.btn-lime{border-color:var(--lime);color:var(--lime);background:transparent}
.btn-lime:hover{background:rgba(198,242,78,.12);color:var(--lime)}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;
  color:var(--green);border-bottom:1px solid currentColor;padding-bottom:2px;
}
.btn-link:hover{color:var(--orange)}
.btn-link svg{width:15px;height:15px;transition:transform var(--dur) var(--ease)}
.btn-link:hover svg{transform:translateX(4px)}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-badge);
  background:var(--green-soft);color:var(--green);font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge-lime{border:1px solid var(--lime);color:var(--lime);background:transparent}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;background:rgba(247,245,240,.92);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 8px 24px -18px rgba(12,42,32,.5)}
.nav{display:flex;align-items:center;gap:20px;height:76px;transition:height var(--dur) var(--ease)}
.site-header.is-scrolled .nav{height:64px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  width:36px;height:36px;border-radius:10px;background:var(--green);
  display:flex;align-items:center;justify-content:center;flex:none;
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:17px;font-weight:900;color:var(--green);letter-spacing:-.02em;white-space:nowrap}
.logo:hover .logo-text{color:var(--orange)}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:12px;flex:1}
.nav-pill{
  display:inline-flex;align-items:center;height:40px;padding:0 16px;border-radius:var(--radius-pill);
  border:1px solid rgba(18,60,46,.18);color:var(--green);font-size:14.5px;font-weight:600;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-pill:hover{background:var(--green-soft);border-color:var(--green);color:var(--green)}
.nav-pill.is-active{background:var(--green);border-color:var(--green);color:var(--bg)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--white);cursor:pointer;padding:0;position:relative;
}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;background:var(--green);border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer{
  position:fixed;inset:76px 0 0 0;background:var(--bg);z-index:110;
  padding:16px 24px 120px;overflow-y:auto;
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.drawer.is-open{transform:none;opacity:1;pointer-events:auto}
.drawer-links li{border-bottom:1px solid var(--line)}
.drawer-links a{display:flex;align-items:center;height:56px;font-size:17px;font-weight:700;color:var(--green)}
.drawer-links a.is-active{color:var(--orange)}
.drawer-foot{position:fixed;left:24px;right:24px;bottom:76px;z-index:111}

/* ---------- 首屏 ---------- */
.hero{padding:72px 0 0;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--radius-pill);
  background:var(--green-soft);color:var(--green);font-size:13px;font-weight:700;margin-bottom:22px;
}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--orange);display:block}
.hero h1{font-size:clamp(30px,5.2vw,62px);font-weight:900}
.hero h1 span{display:block}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero-sub{margin-top:22px;font-size:clamp(17px,1.4vw,20px);color:var(--muted);max-width:560px;font-weight:500}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.hero-media{position:relative}
.hero-media::before{
  content:"";position:absolute;right:-26px;bottom:-26px;width:180px;height:180px;
  background:var(--orange);border-radius:calc(var(--radius-img) + 4px);z-index:0;
}
.hero-media img{
  position:relative;z-index:1;width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-img);box-shadow:var(--shadow-lg);
  animation:heroIn 600ms var(--ease) both;
}
@keyframes heroIn{from{transform:scale(1.02);opacity:.4}to{transform:none;opacity:1}}
.hero-stats{
  margin-top:72px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.hero-stat{padding:26px 24px;border-left:1px solid var(--line)}
.hero-stat:first-child{border-left:none}
.hero-stat b{
  display:block;font-size:clamp(24px,2.6vw,34px);font-weight:900;color:var(--green);
  font-family:ui-monospace,Consolas,monospace;letter-spacing:-.02em;
}
.hero-stat span{display:block;margin-top:6px;font-size:14px;color:var(--muted)}

/* ---------- 痛点提问 ---------- */
.pain-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:64px;align-items:start}
.pain-list li{border-bottom:1px solid var(--line)}
.pain-list a,.pain-list .pain-row{
  display:flex;align-items:center;gap:22px;padding:26px 20px 26px 0;position:relative;color:var(--text);
}
.pain-list .pain-row::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--orange);
  transform:scaleY(0);transform-origin:top;transition:transform var(--dur) var(--ease);
}
.pain-list .pain-row:hover{background:var(--bg-alt)}
.pain-list .pain-row:hover::before{transform:scaleY(1)}
.pain-num{
  font-family:ui-monospace,Consolas,monospace;font-size:26px;font-weight:800;color:var(--orange);
  flex:none;width:52px;
}
.pain-text{font-size:17px;font-weight:600}

/* ---------- 方案卡片 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.plan-main{grid-column:span 7}
.plan-side{grid-column:span 5;display:grid;gap:24px;grid-auto-rows:1fr}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card-media{overflow:hidden;background:#E8E4DB}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:26px}
.card-body h3{font-size:22px;margin-bottom:12px}
.card-body p{color:var(--muted);font-size:15.5px}
.card-points{margin:18px 0 22px;display:grid;gap:10px}
.card-points li{display:flex;gap:10px;font-size:15px;color:var(--text)}
.card-points li::before{content:"";width:7px;height:7px;background:var(--orange);border-radius:2px;margin-top:9px;flex:none}
.plan-side .card-body{padding:24px}
.plan-side .card-body h3{font-size:19px}
.plan-side .card-media img{aspect-ratio:16/9}

/* ---------- 数据区 ---------- */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line-light);border-radius:var(--radius-card);overflow:hidden;
  background:rgba(247,245,240,.04);
}
.stat-cell{padding:40px 28px;border-left:1px solid var(--line-light)}
.stat-cell:first-child{border-left:none}
.stat-cell b{
  display:block;font-size:clamp(44px,6vw,72px);line-height:1;
  color:var(--lime);font-family:ui-monospace,Consolas,monospace;font-weight:800;letter-spacing:-.03em;
}
.stat-cell span{display:block;margin-top:14px;font-size:14px;color:rgba(247,245,240,.7)}
.stats-note{margin-top:28px;font-size:15px;color:rgba(247,245,240,.75);max-width:640px}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px}
.news-feature{display:block}
.news-feature .card-media img{aspect-ratio:16/10}
.news-feature h3{font-size:23px;margin:16px 0 10px}
.news-feature p{color:var(--muted);font-size:15.5px}
.news-meta{display:flex;align-items:center;gap:14px;margin-top:16px;font-size:13px;color:var(--muted)}
.news-side{display:flex;flex-direction:column;justify-content:flex-start}
.news-row{display:block;padding:22px 0;border-bottom:1px solid var(--line);transition:background var(--dur) var(--ease)}
.news-row:first-child{padding-top:0}
.news-row:hover{background:var(--bg-alt)}
.news-row h3{font-size:17px;margin-bottom:10px;font-weight:700;line-height:1.45}
.news-row .news-meta{margin-top:0}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);padding:48px 24px;text-align:center;
  color:var(--muted);font-size:15px;background:var(--white);
}
.empty-state svg{width:32px;height:32px;margin:0 auto 12px;display:block;opacity:.5}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 4px;font-size:17px;font-weight:700;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--orange)}
.faq-icon{position:relative;width:20px;height:20px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--orange);border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.faq-icon::before{left:0;right:0;top:9px;height:2px}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-body{padding:0 4px 24px;line-height:1.8;color:var(--muted);font-size:15.5px}
.faq-item[open] .faq-body{background:var(--bg-alt);border-radius:12px;padding:18px 20px 20px;margin-bottom:18px}

/* ---------- 表单 ---------- */
.contact-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:start}
.contact-card{
  background:rgba(247,245,240,.05);border:1px solid var(--line-light);border-radius:var(--radius-card);
  padding:32px;
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;color:rgba(247,245,240,.85)}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius-input);
  border:1px solid var(--line-light);background:rgba(247,245,240,.06);color:var(--bg);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:rgba(247,245,240,.45)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);box-shadow:0 0 0 2px rgba(240,78,35,.35);
}
.consent{display:flex;gap:10px;align-items:flex-start;margin:6px 0 20px;font-size:12px;color:rgba(247,245,240,.62);line-height:1.65}
.consent input{width:16px;height:16px;margin-top:3px;flex:none;accent-color:var(--orange)}
.consent a{color:var(--lime);text-decoration:underline}
.form-tip{margin-top:14px;font-size:13px;color:var(--lime);display:none}
.form-tip.is-on{display:block}
.contact-points{display:grid;gap:20px;margin-top:32px}
.contact-points li{display:flex;gap:14px;font-size:15.5px;color:rgba(247,245,240,.8)}
.contact-points li b{color:var(--bg);display:block;font-size:16px;font-weight:700}
.dot{width:8px;height:8px;background:var(--lime);border-radius:2px;margin-top:9px;flex:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--green-deep);color:rgba(247,245,240,.72);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo-text{color:var(--bg);font-size:18px}
.footer-brand p{margin-top:16px;font-size:14.5px;line-height:1.8;max-width:320px}
.footer-col h4{font-size:14px;color:var(--bg);letter-spacing:.04em;margin-bottom:18px;font-weight:800}
.footer-col li{margin-bottom:12px}
.footer-col a{color:rgba(247,245,240,.72);font-size:14.5px}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:14.5px;margin-bottom:10px}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-light);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:rgba(247,245,240,.55);
}
.footer-bottom a{color:rgba(247,245,240,.55)}
.footer-bottom a:hover{color:var(--lime)}

/* ---------- 弹层 ---------- */
.modal{
  position:fixed;inset:0;z-index:200;display:none;
  align-items:center;justify-content:center;padding:24px;
}
.modal.is-open{display:flex}
.modal-mask{
  position:absolute;inset:0;background:rgba(12,42,32,.55);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
}
.modal-card{
  position:relative;width:100%;max-width:520px;background:var(--white);border-radius:var(--radius-card);
  padding:32px;box-shadow:var(--shadow-lg);animation:modalIn 240ms var(--ease) both;max-height:90vh;overflow-y:auto;
}
@keyframes modalIn{from{transform:translateY(12px);opacity:0}to{transform:none;opacity:1}}
.modal-card h3{font-size:22px;margin-bottom:8px}
.modal-card .modal-lead{font-size:14.5px;color:var(--muted);margin-bottom:22px}
.modal-close{
  position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line);background:var(--white);cursor:pointer;font-size:18px;line-height:1;color:var(--green);
}
.modal-close:hover{background:var(--bg-alt);color:var(--orange)}
.modal .field label{color:var(--text)}
.modal .field input,.modal .field textarea{
  background:var(--bg);border-color:var(--line);color:var(--text);
}
.modal .field input::placeholder,.modal .field textarea::placeholder{color:var(--muted)}
.modal .consent{color:var(--muted)}
.modal .consent a{color:var(--green)}

/* ---------- 移动吸底条 ---------- */
.mobile-bar{display:none}
.mobile-bar button{
  width:100%;height:56px;border:none;background:var(--green);color:var(--bg);
  display:flex;align-items:center;justify-content:center;gap:10px;font-size:15px;font-weight:700;cursor:pointer;
}
.mobile-bar svg{width:18px;height:18px}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .nav-links{gap:6px}
  .nav-pill{padding:0 13px;font-size:14px}
}
@media (max-width:1100px){
  .nav-links{margin-left:0}
  .nav-actions .btn-ghost{display:none}
}
@media (max-width:992px){
  .section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media::before{width:120px;height:120px;right:-14px;bottom:-14px}
  .pain-grid,.faq-grid,.contact-grid{grid-template-columns:1fr;gap:36px}
  .news-grid{grid-template-columns:1fr;gap:28px}
  .plan-main{grid-column:span 12}
  .plan-side{grid-column:span 12;grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .stats-strip{grid-template-columns:1fr 1fr}
  .stat-cell:nth-child(3){border-left:none}
  .stat-cell{border-top:1px solid var(--line-light)}
  .stat-cell:nth-child(-n+2){border-top:none}
}
@media (max-width:768px){
  body{font-size:16px;padding-bottom:56px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .nav-links{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .nav{height:64px}
  .hero{padding:40px 0 0}
  .hero-stats{grid-template-columns:1fr 1fr;margin-top:48px}
  .hero-stat{padding:20px 16px;border-left:none;border-top:1px solid var(--line)}
  .hero-stat:nth-child(odd){border-right:1px solid var(--line)}
  .hero-stat:nth-child(-n+2){border-top:none}
  .plan-side{grid-template-columns:1fr}
  .stats-strip{grid-template-columns:1fr}
  .stat-cell{border-left:none}
  .stat-cell:nth-child(2){border-top:1px solid var(--line-light)}
  .footer-grid{grid-template-columns:1fr}
  .mobile-bar{
    display:block;position:fixed;left:0;right:0;bottom:0;z-index:130;
    box-shadow:0 -8px 24px -18px rgba(12,42,32,.6);
  }
  .drawer{inset:64px 0 0 0;padding:16px 18px 140px}
  .drawer-foot{left:18px;right:18px;bottom:68px}
  .modal{padding:0;align-items:flex-end}
  .modal-card{max-width:none;border-radius:16px 16px 0 0;animation:sheetIn 240ms var(--ease) both}
  @keyframes sheetIn{from{transform:translateY(100%)}to{transform:none}}
}
@media (max-width:560px){
  .hero h1{font-size:clamp(28px,8.4vw,38px)}
  .sec-head{margin-bottom:32px}
  .card-body{padding:20px}
  .contact-card{padding:22px}
  .hero-actions .btn{width:100%}
  .news-feature h3{font-size:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;transform:none !important;scroll-behavior:auto !important;
  }
}

/* roulang page: article */
:root{
  --green:#123C2E;
  --green-deep:#0C2A20;
  --orange:#F04E23;
  --orange-deep:#D8431D;
  --lime:#C6F24E;
  --bg:#F7F5F0;
  --bg-alt:#F1EEE7;
  --card:#FFFFFF;
  --img-ph:#E8E4DB;
  --text:#14201B;
  --text-2:#5A6B63;
  --line:rgba(18,60,46,.12);
  --line-light:rgba(247,245,240,.12);
  --radius:16px;
  --radius-img:14px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(12,42,32,.06), 0 12px 32px -12px rgba(12,42,32,.16);
  --shadow-hover:0 2px 4px rgba(12,42,32,.08), 0 22px 46px -14px rgba(12,42,32,.26);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:180ms;
  --font:-apple-system, BlinkMacSystemFont, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono:ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--green);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;transition:color var(--dur) var(--ease)}
a:hover{color:var(--orange)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;line-height:1.12;letter-spacing:-.02em;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--bg-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,3.2vw,40px);position:relative;padding-left:20px;max-width:760px}
.section-head h2::before{content:"";position:absolute;left:0;top:.32em;width:8px;height:8px;background:var(--orange)}
.section-head p{color:var(--text-2);font-size:15px;margin-top:12px;padding-left:20px;max-width:640px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;text-decoration:none}
.link-arrow svg{width:16px;height:16px;transition:transform var(--dur) var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(12,42,32,.5)}
.nav{display:flex;align-items:center;gap:20px;height:76px;transition:height var(--dur) var(--ease)}
.site-header.is-scrolled .nav{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--green);flex:0 0 auto}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--green);display:grid;place-items:center;flex:0 0 auto}
.logo-mark svg{width:22px;height:22px}
.logo-text{font-size:18px;font-weight:900;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:12px;flex:1 1 auto;flex-wrap:wrap}
.nav-pill{
  display:inline-flex;align-items:center;height:40px;padding:0 16px;
  border:1px solid rgba(18,60,46,.22);border-radius:999px;
  font-size:15px;font-weight:600;color:var(--green);text-decoration:none;
  position:relative;transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-pill::after{content:"";position:absolute;left:16px;right:16px;bottom:8px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
.nav-pill:hover{background:rgba(240,78,35,.08);border-color:rgba(240,78,35,.35)}
.nav-pill:hover::after{transform:scaleX(1)}
.nav-pill.is-active{background:var(--green);border-color:var(--green);color:var(--bg)}
.nav-pill.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid rgba(18,60,46,.22);border-radius:12px;margin-left:auto;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--green);border-radius:2px;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;text-decoration:none;white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn svg{width:18px;height:18px;transition:transform var(--dur) var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-deep);color:#fff}
.btn-ghost{border-color:rgba(18,60,46,.32);color:var(--green);background:transparent}
.btn-ghost:hover{background:rgba(18,60,46,.08);color:var(--green)}
.btn-light{border-color:var(--lime);color:var(--lime);background:transparent}
.btn-light:hover{background:rgba(198,242,78,.14);color:var(--lime)}
.btn-sm{height:44px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  background:rgba(18,60,46,.08);color:var(--green);font-size:12px;font-weight:700;text-decoration:none;
}
.badge-lime{border:1px solid var(--lime);background:transparent;color:var(--green)}

/* ---------- breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-2);padding-top:24px;padding-bottom:8px}
.breadcrumb a{color:var(--text-2);text-decoration:none}
.breadcrumb a:hover{color:var(--orange);text-decoration:underline}
.breadcrumb .sep{color:rgba(18,60,46,.3)}
.breadcrumb .crumb-current{color:var(--text-2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:56px;padding-top:20px;padding-bottom:72px}
.article-head{padding-bottom:24px;border-bottom:1px solid var(--line)}
.article-head h1{font-size:clamp(28px,4vw,44px);font-weight:900;letter-spacing:-.02em;max-width:22ch}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:20px;font-size:14px;color:var(--text-2)}
.article-meta .dot{color:rgba(18,60,46,.3)}
.article-body{max-width:760px;margin-top:36px;font-size:17px;line-height:1.9}
.article-body p{margin:0 0 1.1em;color:#20302A}
.article-body h2{font-size:clamp(22px,3vw,30px);margin:2.1em 0 .7em;padding-left:14px;position:relative;color:var(--green)}
.article-body h2::before{content:"";position:absolute;left:0;top:.14em;bottom:.14em;width:4px;background:var(--orange)}
.article-body h3{font-size:22px;margin:1.7em 0 .6em;color:var(--green)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.3em}
.article-body ul{list-style:none;padding-left:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.5em}
.article-body ul li::before{content:"";position:absolute;left:0;top:.82em;width:7px;height:7px;border-radius:50%;background:var(--orange)}
.article-body ol{list-style:none;counter-reset:item;padding-left:0}
.article-body ol li{position:relative;padding-left:32px;margin-bottom:.5em;counter-increment:item}
.article-body ol li::before{content:counter(item,decimal-leading-zero);position:absolute;left:0;top:0;font-family:var(--mono);font-size:14px;font-weight:700;color:var(--orange)}
.article-body blockquote{margin:1.6em 0;padding:22px 24px;border-left:4px solid var(--orange);background:var(--bg-alt);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--green);font-size:16px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:1.6em 0;border-radius:var(--radius-img)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{margin-top:10px;font-size:12px;color:var(--text-2);text-align:center}
.article-body a{color:var(--green);font-weight:600}
.article-body a:hover{color:var(--orange)}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body thead th{background:var(--green);color:var(--bg);text-align:left;padding:12px 14px;font-weight:700;border:1px solid var(--green)}
.article-body tbody td{padding:12px 14px;border:1px solid var(--line);color:#20302A}
.article-body tbody tr:nth-child(even){background:var(--bg-alt)}
.empty-state{margin-top:32px;padding:48px 24px;border:1px dashed rgba(18,60,46,.3);border-radius:var(--radius);text-align:center;color:var(--text-2);background:rgba(255,255,255,.6)}
.empty-state svg{width:40px;height:40px;margin:0 auto 14px;stroke:rgba(18,60,46,.4)}
.empty-state strong{display:block;font-size:18px;color:var(--green);margin-bottom:8px}
.empty-state .btn{margin-top:18px}

/* ---------- sidebar ---------- */
.article-aside{display:flex;flex-direction:column;gap:24px;padding-top:36px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.side-card h3{font-size:16px;color:var(--green);padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:8px}
.side-list li{border-bottom:1px solid var(--line)}
.side-list li:last-child{border-bottom:0}
.side-list a{display:block;padding:14px 0;text-decoration:none;color:var(--text);font-size:15px;font-weight:600;line-height:1.5}
.side-list a span{display:block;font-size:13px;font-weight:400;color:var(--text-2);margin-top:4px}
.side-list a:hover{color:var(--orange)}
.side-dark{background:var(--green-deep);border:1px solid var(--line-light);color:var(--bg);box-shadow:none}
.side-dark h3{color:var(--bg);border-bottom-color:var(--line-light)}
.side-dark p{font-size:14px;color:rgba(247,245,240,.72);margin:12px 0 18px;line-height:1.75}
.side-note{font-size:12px;color:rgba(247,245,240,.55);margin-top:12px}

/* ---------- post nav ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:56px;padding-top:32px;border-top:1px solid var(--line)}
.post-nav a{
  display:flex;flex-direction:column;gap:6px;padding:20px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--card);text-decoration:none;color:var(--text);box-shadow:var(--shadow);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.post-nav a:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(240,78,35,.35);color:var(--text)}
.post-nav .dir{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--text-2)}
.post-nav .dir svg{width:15px;height:15px;transition:transform var(--dur) var(--ease)}
.post-nav a:hover .dir svg{transform:translateX(-4px)}
.post-nav .next{align-items:flex-end;text-align:right}
.post-nav .next:hover .dir svg{transform:translateX(4px)}
.post-nav .ttl{font-size:16px;font-weight:700;line-height:1.5}
.back-cat{margin-top:24px;font-size:15px}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.card-media{position:relative;aspect-ratio:4/3;background:var(--img-ph);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 320ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:19px;line-height:1.4;color:var(--text)}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.7}
.card-foot{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-2);margin-top:auto;padding-top:6px}
.card-link{text-decoration:none;color:inherit}
.card-link:hover{color:inherit}

/* ---------- dark cta / form ---------- */
.dark-block{background:var(--green-deep);color:var(--bg)}
.dark-block .section-head h2{color:var(--bg)}
.dark-block .section-head p{color:rgba(247,245,240,.72)}
.form-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:start}
.form-copy h2{font-size:clamp(24px,3.2vw,38px);color:var(--bg);padding-left:20px;position:relative}
.form-copy h2::before{content:"";position:absolute;left:0;top:.32em;width:8px;height:8px;background:var(--orange)}
.form-copy p{margin-top:18px;color:rgba(247,245,240,.72);font-size:16px;max-width:46ch}
.form-copy ul{margin-top:26px;display:grid;gap:12px}
.form-copy li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(247,245,240,.86)}
.form-copy li svg{width:18px;height:18px;flex:0 0 auto;margin-top:3px;stroke:var(--lime)}
.form-card{background:rgba(247,245,240,.05);border:1px solid var(--line-light);border-radius:var(--radius);padding:28px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:14px;font-weight:600;color:rgba(247,245,240,.86)}
.field input,.field textarea{
  height:48px;padding:0 14px;border-radius:var(--radius-sm);border:1px solid var(--line-light);
  background:rgba(247,245,240,.06);color:var(--bg);font-size:15px;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea{height:110px;padding:12px 14px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(247,245,240,.42)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 2px rgba(240,78,35,.45)}
.consent{display:flex;align-items:flex-start;gap:10px;font-size:12px;color:rgba(247,245,240,.6);margin:6px 0 18px;line-height:1.7}
.consent input{width:16px;height:16px;margin-top:3px;accent-color:var(--orange)}
.consent a{color:var(--lime)}

/* ---------- footer ---------- */
.site-footer{background:var(--green-deep);color:var(--bg);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{color:var(--bg);margin-bottom:18px}
.footer-brand p{font-size:14px;color:rgba(247,245,240,.72);line-height:1.8;max-width:36ch}
.footer-col{border-left:1px solid var(--line-light);padding-left:28px}
.footer-col h4{font-size:15px;color:var(--bg);margin-bottom:18px}
.footer-col ul{display:grid;gap:12px}
.footer-col a{color:rgba(247,245,240,.72);font-size:14px;text-decoration:none}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:14px;color:rgba(247,245,240,.72);line-height:1.8;margin-bottom:10px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--line-light);padding:20px 0 28px;font-size:12px;color:rgba(247,245,240,.6);
}
.footer-bottom a{color:rgba(247,245,240,.6)}
.footer-bottom a:hover{color:var(--lime)}

/* ---------- drawer / mobile bar / modal ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:70;background:var(--bg);
  padding:88px 24px 120px;transform:translateY(-102%);transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateY(0)}
.nav-drawer a.drawer-link{
  display:flex;align-items:center;height:56px;border-bottom:1px solid var(--line);
  font-size:17px;font-weight:700;color:var(--green);text-decoration:none;
}
.nav-drawer a.drawer-link:hover{color:var(--orange)}
.drawer-foot{margin-top:auto;padding-top:28px}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:55;display:none;align-items:center;justify-content:center;gap:10px;
  height:56px;background:var(--green);color:var(--bg);font-size:15px;font-weight:700;text-decoration:none;
}
.mobile-bar:hover{color:var(--bg)}
.mobile-bar svg{width:18px;height:18px;stroke:var(--lime)}
.modal-mask{
  position:fixed;inset:0;z-index:90;display:none;align-items:center;justify-content:center;padding:24px;
  background:rgba(12,42,32,.55);backdrop-filter:blur(4px);
}
.modal-mask.is-open{display:flex}
.modal-card{
  width:100%;max-width:520px;background:var(--green-deep);border:1px solid var(--line-light);
  border-radius:var(--radius);padding:28px;position:relative;color:var(--bg);
}
.modal-card h3{font-size:22px;color:var(--bg);margin-bottom:8px}
.modal-card .modal-sub{font-size:14px;color:rgba(247,245,240,.7);margin-bottom:22px}
.modal-close{position:absolute;top:14px;right:14px;width:44px;height:44px;display:grid;place-items:center;border-radius:12px;color:rgba(247,245,240,.7)}
.modal-close:hover{background:rgba(247,245,240,.1);color:var(--bg)}
.modal-close svg{width:18px;height:18px}

@media (max-width:992px){
  .nav-links{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px}
  .article-aside{padding-top:0}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .form-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-col{border-left:0;padding-left:0}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:28px}
  .article-head h1{font-size:clamp(24px,6.4vw,32px)}
  .article-meta{gap:12px}
  .breadcrumb .crumb-current{white-space:normal;max-width:100%}
  .post-nav{grid-template-columns:minmax(0,1fr)}
  .post-nav .next{align-items:flex-start;text-align:left}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-col{border-top:1px solid var(--line-light);padding-top:24px}
  .mobile-bar{display:flex}
  .site-footer{padding-bottom:56px}
  .modal-mask{align-items:flex-end;padding:0}
  .modal-card{max-width:none;border-radius:16px 16px 0 0}
}
@media (max-width:560px){
  .btn{height:46px;padding:0 20px}
  .nav-actions .btn{width:100%}
  .article-meta{font-size:13px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;transform:none!important}
}

/* roulang page: category1 */
:root{
  --ink:#123C2E;
  --ink-deep:#0C2A20;
  --accent:#F04E23;
  --accent-hover:#D9441C;
  --lime:#C6F24E;
  --paper:#F7F5F0;
  --alt:#F1EEE7;
  --card:#FFFFFF;
  --text:#14201B;
  --muted:#5A6B63;
  --line:rgba(18,60,46,.12);
  --line-dark:rgba(247,245,240,.14);
  --ph:#E8E4DB;
  --r-card:16px;
  --r-img:14px;
  --r-input:10px;
  --shadow:0 1px 2px rgba(12,42,32,.06),0 12px 32px -12px rgba(12,42,32,.16);
  --shadow-hover:0 2px 4px rgba(12,42,32,.08),0 20px 40px -14px rgba(12,42,32,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:180ms;
  --font:-apple-system,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;transition:color var(--dur) var(--ease)}
a:hover{color:var(--accent)}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.12;letter-spacing:-.02em;font-weight:900;color:var(--ink)}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:700;text-decoration:none;letter-spacing:.01em;
  border:1px solid transparent;transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn svg{width:17px;height:17px;flex:none;transition:transform var(--dur) var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);color:#fff}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(18,60,46,.35);color:var(--ink)}
.btn-ghost:hover{background:rgba(18,60,46,.08);border-color:var(--ink);color:var(--ink)}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{background:rgba(18,60,46,.08)}
.btn-lime{background:transparent;border-color:var(--lime);color:var(--lime)}
.btn-lime:hover{background:rgba(198,242,78,.14);color:var(--lime)}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--ink);font-weight:700;text-decoration:none;border-bottom:1px solid rgba(18,60,46,.35);padding-bottom:2px}
.link-arrow svg{width:16px;height:16px;transition:transform var(--dur) var(--ease)}
.link-arrow:hover{color:var(--accent);border-color:var(--accent)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;background:rgba(18,60,46,.08);color:var(--ink);font-size:12px;font-weight:700;letter-spacing:.02em}
.badge-lime{border:1px solid var(--lime);background:transparent;color:var(--ink)}
.badge-dark{background:rgba(247,245,240,.12);color:var(--paper)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--muted);text-transform:uppercase}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent)}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid transparent;
  transition:height var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{background:rgba(247,245,240,.92);border-bottom-color:var(--line);box-shadow:0 6px 24px -18px rgba(12,42,32,.4)}
.nav{display:flex;align-items:center;gap:24px;height:76px;transition:height var(--dur) var(--ease)}
.site-header.is-scrolled .nav{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--ink);display:grid;place-items:center;flex:none}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:17px;font-weight:900;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:8px;margin-left:8px;flex-wrap:wrap}
.nav-pill{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 16px;
  border-radius:999px;border:1px solid rgba(18,60,46,.16);
  font-size:14.5px;font-weight:600;color:var(--ink);text-decoration:none;white-space:nowrap;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-pill::after{content:"";position:absolute;left:16px;right:16px;bottom:9px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease)}
.nav-pill:hover{background:rgba(240,78,35,.08);border-color:rgba(240,78,35,.4);color:var(--ink)}
.nav-pill:hover::after{transform:scaleX(1)}
.nav-pill.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.nav-pill.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid rgba(18,60,46,.2);flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-drawer{
  position:fixed;top:0;right:0;z-index:95;width:min(360px,100%);height:100%;
  background:var(--paper);border-left:1px solid var(--line);
  padding:88px 20px 96px;overflow-y:auto;
  transform:translateX(102%);transition:transform 240ms var(--ease);
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer ul{margin-bottom:22px}
.nav-drawer li{border-bottom:1px solid var(--line)}
.nav-drawer a{display:flex;align-items:center;height:56px;font-size:17px;font-weight:700;text-decoration:none;color:var(--ink)}
.nav-drawer a.is-active{color:var(--accent)}
.drawer-backdrop{position:fixed;inset:0;z-index:90;background:rgba(12,42,32,.5);opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease)}
.drawer-backdrop.is-open{opacity:1;visibility:visible}
body.no-scroll{overflow:hidden}

/* ============ 面包屑 ============ */
.breadcrumb{padding-top:24px;font-size:13px;color:var(--muted)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:rgba(18,60,46,.3)}
.breadcrumb a{color:var(--muted);text-decoration:none}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb [aria-current="page"]{color:var(--muted)}

/* ============ Hero ============ */
.hero{padding:44px 0 0}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(30px,5.2vw,56px);line-height:1.12}
.hero h1 .h1-line{display:block}
.hero h1 .h1-accent{color:var(--accent)}
.hero-lead{margin-top:22px;font-size:17px;color:var(--muted);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-media{position:relative}
.hero-media .media-frame{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:var(--ph);box-shadow:var(--shadow)}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
.hero-media:hover img{transform:scale(1.02)}
.hero-block{position:absolute;right:-16px;bottom:-16px;width:132px;height:132px;background:var(--accent);border-radius:10px;z-index:-1}
.hero-media{isolation:isolate}
.hero-media .tag-float{
  position:absolute;left:18px;bottom:18px;background:rgba(12,42,32,.86);color:var(--paper);
  border-radius:10px;padding:12px 16px;font-size:13px;line-height:1.5;max-width:240px;backdrop-filter:blur(2px)
}
.hero-media .tag-float strong{display:block;font-size:15px;color:var(--lime)}
.data-strip{
  margin-top:64px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr)
}
.data-strip .data-cell{padding:24px 22px;border-right:1px solid var(--line)}
.data-strip .data-cell:last-child{border-right:0}
.data-num{font-family:var(--mono);font-size:clamp(26px,3.2vw,38px);font-weight:700;color:var(--ink);letter-spacing:-.02em;line-height:1.1}
.data-num em{font-style:normal;color:var(--accent)}
.data-label{margin-top:6px;font-size:13px;color:var(--muted)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--alt)}
.section-dark{background:var(--ink-deep);color:var(--paper)}
.section-dark h2,.section-dark h3{color:var(--paper)}
.section-head{max-width:760px}
.section-head h2{font-size:clamp(24px,3.2vw,40px);display:flex;align-items:center;gap:14px}
.section-head h2::before{content:"";width:8px;height:8px;background:var(--accent);flex:none}
.section-head p{margin-top:16px;color:var(--muted)}
.section-dark .section-head p{color:rgba(247,245,240,.72)}

/* ============ Z 字图文 ============ */
.zigzag{margin-top:56px;display:flex;flex-direction:column;gap:0}
.zig{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
  padding:56px 0;border-bottom:1px solid var(--line)
}
.zig:first-child{padding-top:0}
.zig:last-child{border-bottom:0;padding-bottom:0}
.zig.reverse .zig-media{order:2}
.zig.reverse .zig-copy{order:1}
.zig-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:4/3;background:var(--ph);box-shadow:var(--shadow)}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform 600ms var(--ease)}
.zig-media:hover img{transform:scale(1.03)}
.zig-num{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.1em}
.zig-copy h3{margin-top:12px;font-size:clamp(21px,2.2vw,28px)}
.zig-copy p{margin-top:14px;color:var(--muted)}
.check-list{margin-top:22px;border-top:1px solid var(--line)}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15.5px;color:var(--text)
}
.check-list li::before{
  content:"";flex:none;width:18px;height:18px;margin-top:5px;border-radius:50%;
  background:var(--ink);position:relative
}
.check-list li::after{content:none}
.check-list li span{position:relative}
.check-list li span::before{content:"";position:absolute;left:-30px;top:9px;width:8px;height:4px;border-left:2px solid var(--lime);border-bottom:2px solid var(--lime);transform:rotate(-45deg)}
.check-list li>em{font-style:normal}

/* ============ 场景双栏列表 ============ */
.scene-grid{margin-top:48px;display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.scene-item{padding:24px 0;border-bottom:1px solid var(--line);transition:background var(--dur) var(--ease),padding-left var(--dur) var(--ease)}
.scene-item:hover{background:rgba(241,238,231,.9);padding-left:14px}
.scene-item h3{font-size:18px;display:flex;align-items:center;gap:10px}
.scene-item h3 .dot{width:6px;height:6px;background:var(--accent);border-radius:50%;flex:none}
.scene-item p{margin-top:8px;font-size:15px;color:var(--muted)}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:start}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:14px 0;font-size:17px;font-weight:700;color:var(--ink)
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:20px;height:20px;flex:none}
.faq-icon::before{content:"";position:absolute;left:0;top:50%;width:100%;height:2px;background:var(--accent);transform:translateY(-50%)}
.faq-icon::after{content:"";position:absolute;left:50%;top:0;width:2px;height:100%;background:var(--accent);transform:translateX(-50%);transition:transform var(--dur) var(--ease)}
.faq-item[open] .faq-icon::after{transform:translateX(-50%) rotate(90deg)}
.faq-body{background:var(--alt);border-radius:10px;padding:16px 20px;margin-bottom:16px;font-size:15.5px;line-height:1.8;color:var(--muted)}
.faq-item:hover summary{color:var(--accent)}

/* ============ CTA 表单 ============ */
.cta-section{background:var(--ink-deep);padding:96px 0;color:var(--paper)}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.cta-copy h2{color:var(--paper);font-size:clamp(24px,3.2vw,40px)}
.cta-copy p{margin-top:18px;color:rgba(247,245,240,.72);max-width:520px}
.cta-points{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(247,245,240,.86)}
.cta-points li::before{content:"";flex:none;width:8px;height:8px;margin-top:8px;background:var(--lime);border-radius:2px}
.form-card{background:rgba(247,245,240,.06);border:1px solid var(--line-dark);border-radius:var(--r-card);padding:30px}
.form-card h3{font-size:20px;color:var(--paper)}
.form-card .form-hint{margin-top:8px;font-size:13.5px;color:rgba(247,245,240,.62)}
.field{margin-top:18px}
.field label{display:block;font-size:13.5px;font-weight:700;color:rgba(247,245,240,.8);margin-bottom:8px}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-input);
  background:rgba(247,245,240,.08);border:1px solid var(--line-dark);color:var(--paper);
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease)
}
.field textarea{height:auto;min-height:104px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:rgba(247,245,240,.42)}
.field input:focus,.field textarea:focus{outline:2px solid var(--accent);outline-offset:1px;background:rgba(247,245,240,.12)}
.consent{display:flex;gap:10px;align-items:flex-start;margin-top:18px;font-size:12.5px;color:rgba(247,245,240,.66);line-height:1.6}
.consent input{width:18px;height:18px;flex:none;margin-top:2px;accent-color:var(--accent)}
.consent a{color:rgba(247,245,240,.86)}
.form-note{margin-top:12px;font-size:12px;color:rgba(247,245,240,.55)}
.form-status{margin-top:12px;font-size:13px;color:var(--lime);min-height:18px}

/* ============ 弹层 ============ */
.modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:24px}
.modal.is-open{display:flex}
.modal-backdrop{position:absolute;inset:0;background:rgba(12,42,32,.55);backdrop-filter:blur(4px)}
.modal-card{
  position:relative;z-index:2;width:100%;max-width:520px;background:var(--paper);
  border-radius:var(--r-card);padding:32px;box-shadow:0 30px 60px -24px rgba(12,42,32,.5);
  max-height:90vh;overflow-y:auto
}
.modal-card h3{font-size:22px}
.modal-card .modal-sub{margin-top:10px;font-size:14px;color:var(--muted)}
.modal-card .field label{color:var(--ink)}
.modal-card .field input,.modal-card .field textarea{background:#fff;border-color:var(--line);color:var(--text)}
.modal-card .field input::placeholder,.modal-card .field textarea::placeholder{color:rgba(90,107,99,.6)}
.modal-card .consent{color:var(--muted)}
.modal-close{position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink)}
.modal-close:hover{background:rgba(18,60,46,.08)}
.modal-privacy{margin-top:14px;font-size:12px;color:var(--muted);line-height:1.6}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-deep);color:rgba(247,245,240,.82);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{color:var(--paper);margin-bottom:16px}
.footer-brand .logo-mark{background:rgba(247,245,240,.1)}
.footer-brand p{font-size:14px;color:rgba(247,245,240,.7);max-width:340px}
.footer-col h4{font-size:14px;color:var(--paper);letter-spacing:.04em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(247,245,240,.74);text-decoration:none}
.footer-col a:hover{color:var(--lime)}
.footer-col p{font-size:13.5px;color:rgba(247,245,240,.66);margin-bottom:10px;line-height:1.7}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(247,245,240,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(247,245,240,.52)
}
.footer-bottom a{color:rgba(247,245,240,.72);text-decoration:none}
.footer-bottom a:hover{color:var(--lime)}

/* ============ 移动吸底条 ============ */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;height:56px;
  background:var(--ink);color:var(--paper);align-items:center;justify-content:center;gap:10px;
  font-size:14.5px;font-weight:700;text-decoration:none
}
.mobile-bar svg{width:18px;height:18px}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .hero-grid{gap:40px}
}
@media (max-width:992px){
  .nav-links{display:none}
  .nav-actions{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:2}
  .zig{gap:36px}
  .faq-layout{grid-template-columns:1fr;gap:36px}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
  .cta-section{padding:72px 0}
}
@media (max-width:768px){
  body{font-size:16px;padding-bottom:64px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .cta-section{padding:56px 0}
  .data-strip{grid-template-columns:1fr 1fr}
  .data-strip .data-cell{border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .data-strip .data-cell:nth-child(2n){border-right:0}
  .data-strip .data-cell:nth-last-child(-n+2){border-bottom:0}
  .zig{grid-template-columns:1fr;gap:24px;padding:40px 0}
  .zig.reverse .zig-media{order:1}
  .zig.reverse .zig-copy{order:2}
  .scene-grid{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .mobile-bar{display:flex}
  .modal{align-items:flex-end;padding:0}
  .modal-card{max-width:none;border-radius:16px 16px 0 0;padding:28px 20px 32px}
  .hero-block{display:none}
  .form-card{padding:22px}
}
@media (max-width:560px){
  .logo-text{font-size:15px}
  .hero-actions .btn{width:100%}
  .data-strip{grid-template-columns:1fr}
  .data-strip .data-cell{border-right:0}
  .data-strip .data-cell:nth-last-child(-n+2){border-bottom:1px solid var(--line)}
  .data-strip .data-cell:last-child{border-bottom:0}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
  .hero-media:hover img,.zig-media:hover img{transform:none}
  .btn:hover svg,.link-arrow:hover svg{transform:none}
  .nav-drawer{transition:none}
}

/* roulang page: category2 */
:root{
  --ink:#14201B;
  --ink-2:#5A6B63;
  --green:#123C2E;
  --green-deep:#0C2A20;
  --orange:#F04E23;
  --lime:#C6F24E;
  --bg:#F7F5F0;
  --bg-alt:#F1EEE7;
  --card:#FFFFFF;
  --white-soft:#F7F5F0;
  --line:rgba(18,60,46,.12);
  --line-strong:rgba(18,60,46,.22);
  --radius-card:16px;
  --radius-img:14px;
  --radius-pill:999px;
  --radius-badge:6px;
  --radius-input:10px;
  --shadow:0 1px 2px rgba(12,42,32,.06),0 12px 32px -12px rgba(12,42,32,.16);
  --shadow-hover:0 2px 4px rgba(12,42,32,.08),0 22px 46px -16px rgba(12,42,32,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:180ms cubic-bezier(.22,.61,.36,1);
  --font:-apple-system,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,Consolas,"SFMono-Regular","Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--green);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;transition:color var(--t);}
a:hover{color:var(--orange);}
h1,h2,h3,h4{margin:0;line-height:1.12;letter-spacing:-.02em;font-weight:700;}
h3{font-size:22px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(247,245,240,.78);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t);
}
.site-header.is-scrolled{background:rgba(247,245,240,.94);border-bottom-color:var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;height:76px;transition:height var(--t);}
.site-header.is-scrolled .nav{height:64px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--green);text-decoration:none;font-weight:900;letter-spacing:-.01em;}
.logo:hover{color:var(--green);}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--green);display:grid;place-items:center;flex:0 0 auto;}
.logo-mark svg{width:20px;height:20px;}
.logo-text{font-size:18px;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:8px;}
.nav-pill{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:10px 16px;
  border-radius:var(--radius-pill);
  border:1px solid rgba(18,60,46,.14);
  font-size:15px;
  font-weight:600;
  color:var(--green);
  text-decoration:none;
  white-space:nowrap;
  transition:background var(--t),border-color var(--t),color var(--t);
}
.nav-pill::after{
  content:"";
  position:absolute;
  left:16px;right:16px;bottom:5px;
  height:2px;border-radius:2px;
  background:var(--orange);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--t);
}
.nav-pill:hover{background:rgba(240,78,35,.08);border-color:rgba(240,78,35,.32);color:var(--green);}
.nav-pill:hover::after{transform:scaleX(1);}
.nav-pill.is-active{background:var(--green);border-color:var(--green);color:var(--white-soft);}
.nav-pill.is-active::after{display:none;}
.nav-actions{display:flex;align-items:center;gap:10px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;font-weight:700;
  text-decoration:none;
  white-space:nowrap;
  transition:transform var(--t),background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn svg{width:16px;height:16px;transition:transform var(--t);}
.btn:hover svg{transform:translateX(4px);}
.btn-primary{background:var(--orange);color:#FFFFFF;}
.btn-primary:hover{background:#D9431C;color:#FFFFFF;box-shadow:0 12px 26px -12px rgba(240,78,35,.85);}
.btn-ghost{background:transparent;border-color:rgba(18,60,46,.35);color:var(--green);}
.btn-ghost:hover{background:rgba(18,60,46,.08);color:var(--green);}
.btn-outline-light{background:transparent;border-color:rgba(198,242,78,.6);color:var(--lime);}
.btn-outline-light:hover{background:rgba(198,242,78,.12);color:var(--lime);}
.btn-sm{height:44px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid rgba(18,60,46,.2);border-radius:12px;background:transparent;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--green);transition:transform var(--t),opacity var(--t);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- drawer + mobile bar ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:110;
  background:var(--bg);
  padding:20px 18px 120px;
  display:flex;flex-direction:column;
  transform:translateY(-100%);
  visibility:hidden;
  overflow-y:auto;
  transition:transform 300ms var(--ease),visibility 300ms;
}
.nav-drawer.is-open{transform:translateY(0);visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;margin-bottom:8px;}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid rgba(18,60,46,.2);background:transparent;font-size:20px;color:var(--green);line-height:1;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;border-bottom:1px solid var(--line);
  font-size:17px;font-weight:600;color:var(--green);text-decoration:none;
}
.drawer-list a.is-active{color:var(--orange);}
.drawer-cta{margin-top:24px;}
.drawer-tip{margin-top:16px;font-size:13px;color:var(--ink-2);}
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:95;
  height:56px;padding:0 18px;
  display:none;align-items:center;justify-content:space-between;gap:12px;
  background:var(--green);color:var(--white-soft);
  font-size:15px;font-weight:600;text-decoration:none;
}
.mobile-bar:hover{color:var(--white-soft);}
.mobile-bar svg{width:18px;height:18px;flex:0 0 auto;}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding-top:24px;font-size:13px;color:var(--ink-2);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:rgba(20,32,27,.28);}
.breadcrumb a{color:var(--ink-2);text-decoration:none;}
.breadcrumb a:hover{color:var(--orange);}
.breadcrumb [aria-current="page"]{color:var(--ink-2);}

/* ---------- hero (center narrow) ---------- */
.hero-c2{position:relative;overflow:hidden;padding:64px 0 72px;background:var(--bg);}
.hero-block{position:absolute;pointer-events:none;}
.hero-block--a{top:-60px;left:-70px;width:200px;height:200px;border:2px solid rgba(18,60,46,.12);transform:rotate(-12deg);}
.hero-block--b{bottom:-90px;right:-70px;width:260px;height:260px;background:rgba(240,78,35,.10);transform:rotate(10deg);}
.hero-c2-inner{position:relative;z-index:2;max-width:860px;margin:0 auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 14px;border-radius:var(--radius-badge);
  background:rgba(18,60,46,.08);color:var(--green);
  font-size:13px;font-weight:700;letter-spacing:.04em;
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--orange);border-radius:50%;}
.hero-c2 h1{margin:22px 0 18px;font-size:clamp(30px,5.2vw,62px);font-weight:900;color:var(--green);}
.hero-sub{max-width:660px;margin:0 auto;font-size:19px;color:var(--ink-2);}
.hero-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:34px;}
.hero-metrics{
  display:flex;justify-content:center;flex-wrap:wrap;
  margin-top:48px;padding-top:26px;border-top:1px solid var(--line);
}
.hero-metrics li{padding:0 32px;border-right:1px solid var(--line);text-align:center;}
.hero-metrics li:last-child{border-right:0;}
.hero-metrics b{display:block;font-family:var(--mono);font-size:28px;font-weight:700;color:var(--green);line-height:1.3;}
.hero-metrics span{font-size:13px;color:var(--ink-2);}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section--alt{background:var(--bg-alt);}
.section--dark{background:var(--green-deep);color:var(--white-soft);}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head h2{position:relative;font-size:clamp(24px,3.2vw,40px);font-weight:700;color:var(--green);}
.section-head h2::before{
  content:"";display:inline-block;width:8px;height:8px;
  margin-right:12px;background:var(--orange);vertical-align:middle;
}
.section-head p{margin-top:16px;color:var(--ink-2);}
.section--dark .section-head h2{color:var(--white-soft);}
.section--dark .section-head p{color:rgba(247,245,240,.72);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;}
.step{position:relative;padding-right:24px;}
.step::after{
  content:"";position:absolute;top:24px;left:60px;right:10px;height:1px;
  background:rgba(18,60,46,.16);
}
.step:last-child::after{display:none;}
.step-num{
  position:relative;z-index:1;
  display:inline-flex;align-items:center;justify-content:center;
  width:48px;height:48px;border-radius:50%;
  background:#FFFFFF;border:1px solid rgba(18,60,46,.2);
  font-family:var(--mono);font-size:16px;font-weight:700;color:var(--green);
}
.step h3{margin:20px 0 10px;font-size:19px;color:var(--green);}
.step p{font-size:15px;color:var(--ink-2);}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.event-card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  color:var(--ink);
  text-decoration:none;
  transition:transform var(--t),box-shadow var(--t);
}
.event-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);color:var(--ink);}
.event-card .thumb{aspect-ratio:4/3;overflow:hidden;background:#E8E4DB;}
.event-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 500ms var(--ease);}
.event-card:hover .thumb img{transform:scale(1.03);}
.event-card .body{display:flex;flex-direction:column;gap:14px;flex:1;padding:26px 26px 28px;}
.event-card h3{font-size:22px;color:var(--green);}
.event-card .summary{font-size:15px;color:var(--ink-2);}
.point-list{display:flex;flex-direction:column;gap:8px;}
.point-list li{position:relative;padding-left:18px;font-size:15px;color:var(--ink-2);}
.point-list li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;background:var(--orange);transform:rotate(45deg);}
.link-arrow{
  margin-top:auto;
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:700;color:var(--green);
  text-decoration:none;
  border-bottom:1px solid rgba(18,60,46,.35);
  padding-bottom:2px;
  align-self:flex-start;
}
.link-arrow svg{width:15px;height:15px;transition:transform var(--t);}
.link-arrow:hover{color:var(--orange);border-color:var(--orange);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- dark metrics ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(247,245,240,.16);}
.metric-grid li{padding:30px 24px 26px;border-right:1px solid rgba(247,245,240,.16);border-bottom:1px solid rgba(247,245,240,.16);}
.metric-grid li:last-child{border-right:0;}
.metric-grid b{display:block;font-family:var(--mono);font-size:clamp(44px,6vw,72px);font-weight:700;line-height:1;color:var(--lime);}
.metric-grid span{display:block;margin-top:14px;font-size:14px;color:rgba(247,245,240,.72);}
.metric-grid em{display:block;margin-top:6px;font-style:normal;font-size:14px;color:rgba(247,245,240,.5);}
.metric-note{margin-top:32px;font-size:15px;color:rgba(247,245,240,.72);}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:56px;align-items:start;}
.faq-intro h2{font-size:clamp(24px,3.2vw,40px);color:var(--green);}
.faq-intro h2::before{content:"";display:inline-block;width:8px;height:8px;margin-right:12px;background:var(--orange);vertical-align:middle;}
.faq-intro p{margin-top:16px;color:var(--ink-2);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:64px;padding:16px 4px;
  font-size:17px;font-weight:600;color:var(--green);
  transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--orange);}
.faq-item[open] summary{color:var(--orange);}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--orange);border-radius:2px;transition:transform var(--t),opacity var(--t);}
.faq-icon::before{top:8px;left:0;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-body{
  margin:0 0 18px;padding:16px 18px;
  background:var(--bg-alt);border-radius:10px;
  font-size:16px;line-height:1.8;color:var(--ink-2);
}

/* ---------- cta / form ---------- */
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.cta-copy h2{font-size:clamp(24px,3.2vw,40px);color:var(--white-soft);}
.cta-copy h2::before{content:"";display:inline-block;width:8px;height:8px;margin-right:12px;background:var(--orange);vertical-align:middle;}
.cta-copy p{margin-top:18px;color:rgba(247,245,240,.75);}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:10px;}
.cta-points li{position:relative;padding-left:20px;font-size:15px;color:rgba(247,245,240,.72);}
.cta-points li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;background:var(--lime);border-radius:2px;}
.consult-form{
  background:rgba(247,245,240,.05);
  border:1px solid rgba(247,245,240,.14);
  border-radius:var(--radius-card);
  padding:32px;
}
.consult-form h3{font-size:20px;color:var(--white-soft);}
.consult-form .form-tip{margin-top:8px;font-size:14px;color:rgba(247,245,240,.62);}
.field{display:flex;flex-direction:column;gap:8px;margin-top:16px;}
.field label{font-size:14px;color:rgba(247,245,240,.8);}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border-radius:var(--radius-input);
  border:1px solid rgba(247,245,240,.22);
  background:rgba(247,245,240,.06);
  color:var(--white-soft);
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field textarea{height:104px;padding:12px 14px;line-height:1.6;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:rgba(247,245,240,.42);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--orange);
  box-shadow:0 0 0 2px rgba(240,78,35,.55);
}
.field input:disabled,.field textarea:disabled{opacity:.45;cursor:not-allowed;}
.privacy{
  display:flex;align-items:flex-start;gap:10px;
  margin-top:16px;font-size:12px;line-height:1.6;
  color:rgba(247,245,240,.62);
}
.privacy input{width:16px;height:16px;margin:2px 0 0;flex:0 0 auto;accent-color:var(--orange);}
.privacy a{color:var(--lime);text-decoration:underline;}
.consult-form .btn{margin-top:20px;}

/* ---------- modal ---------- */
.modal{
  position:fixed;inset:0;z-index:130;
  display:flex;align-items:center;justify-content:center;
  padding:24px;
  visibility:hidden;opacity:0;
  transition:opacity 200ms var(--ease),visibility 200ms;
}
.modal.is-open{visibility:visible;opacity:1;}
.modal-mask{position:absolute;inset:0;background:rgba(12,42,32,.55);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);}
.modal-card{
  position:relative;z-index:1;
  width:100%;max-width:520px;
  background:var(--green-deep);color:var(--white-soft);
  border-radius:var(--radius-card);
  padding:32px;
  transform:translateY(12px);
  transition:transform 240ms var(--ease);
  max-height:calc(100vh - 48px);
  overflow-y:auto;
}
.modal.is-open .modal-card{transform:translateY(0);}
.modal-close{
  position:absolute;top:16px;right:16px;
  width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(247,245,240,.2);background:transparent;
  color:var(--white-soft);font-size:20px;line-height:1;
}
.modal-close:hover{background:rgba(247,245,240,.1);}
.modal-card h3{font-size:22px;}
.modal-card .modal-tip{margin-top:10px;font-size:14px;color:rgba(247,245,240,.68);}

/* ---------- footer ---------- */
.site-footer{background:var(--green-deep);color:rgba(247,245,240,.78);padding:72px 0 28px;font-size:15px;}
.site-footer .logo-text{color:var(--white-soft);}
.site-footer .logo:hover .logo-text{color:var(--lime);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px;}
.footer-brand .logo-mark{background:rgba(247,245,240,.08);border:1px solid rgba(247,245,240,.16);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(247,245,240,.68);}
.footer-col h4{font-size:15px;color:var(--white-soft);margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:rgba(247,245,240,.78);text-decoration:none;}
.footer-col a:hover{color:var(--lime);}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(247,245,240,.68);margin-bottom:10px;}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;
  padding-top:22px;border-top:1px solid rgba(247,245,240,.12);
  font-size:12px;color:rgba(247,245,240,.55);
}
.footer-bottom a{color:rgba(247,245,240,.68);text-decoration:none;}
.footer-bottom a:hover{color:var(--lime);}

/* ---------- animation ---------- */
@keyframes riseIn{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:none;}}
.rise{animation:riseIn 560ms var(--ease) both;}
.rise-1{animation-delay:60ms;}
.rise-2{animation-delay:120ms;}
.rise-3{animation-delay:180ms;}
.rise-4{animation-delay:240ms;}

/* ---------- responsive ---------- */
@media (max-width:992px){
  .section{padding:72px 0;}
  .card-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(2,1fr);gap:36px 24px;}
  .step{padding-right:0;}
  .step::after{display:none;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
  .faq-grid{grid-template-columns:1fr;gap:36px;}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .nav-links,.nav-actions{display:none;}
  .nav-toggle{display:flex;}
  .mobile-bar{display:flex;}
  .site-footer{padding-bottom:76px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .hero-c2{padding:44px 0 56px;}
  .hero-c2 h1{margin:18px 0 14px;}
  .hero-sub{font-size:17px;}
  .hero-metrics{margin-top:36px;padding-top:22px;}
  .hero-metrics li{padding:0 18px;}
  .steps{grid-template-columns:1fr;gap:0;}
  .step{position:relative;padding:0 0 26px 64px;}
  .step:last-child{padding-bottom:0;}
  .step-num{position:absolute;left:0;top:0;width:44px;height:44px;font-size:15px;}
  .step::before{content:"";position:absolute;left:21px;top:54px;bottom:6px;width:1px;background:rgba(18,60,46,.16);}
  .step:last-child::before{display:none;}
  .step h3{margin:6px 0 8px;font-size:18px;}
  .metric-grid{grid-template-columns:1fr;}
  .metric-grid li{border-right:0;}
  .consult-form{padding:24px;}
  .modal{align-items:flex-end;padding:0;}
  .modal-card{max-width:none;border-radius:16px 16px 0 0;max-height:88vh;padding:26px 20px 32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:560px){
  .hero-metrics{flex-direction:column;align-items:stretch;gap:16px;}
  .hero-metrics li{padding:0 0 14px;border-right:0;border-bottom:1px solid var(--line);text-align:left;}
  .hero-metrics li:last-child{border-bottom:0;padding-bottom:0;}
  .hero-actions .btn{width:100%;}
  .event-card .body{padding:22px 20px 24px;}
  .link-arrow{font-size:14px;}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html{scroll-behavior:auto;}
  .event-card:hover{transform:none;}
  .event-card:hover .thumb img{transform:none;}
  .btn:hover svg,.link-arrow:hover svg{transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#14201B;
  --ink-2:#5A6B63;
  --green:#123C2E;
  --dark:#0C2A20;
  --orange:#F04E23;
  --orange-d:#D8411B;
  --lime:#C6F24E;
  --paper:#F7F5F0;
  --alt:#F1EEE7;
  --card:#FFFFFF;
  --frame:#E8E4DB;
  --line:rgba(18,60,46,.12);
  --line-inv:rgba(247,245,240,.14);
  --r-card:16px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(12,42,32,.06),0 12px 32px -12px rgba(12,42,32,.16);
  --sh-2:0 2px 6px rgba(12,42,32,.09),0 22px 46px -14px rgba(12,42,32,.26);
  --t:180ms cubic-bezier(.22,.61,.36,1);
  --font:-apple-system,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,Consolas,"SFMono-Regular",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--green);text-decoration:underline;text-underline-offset:3px;transition:color var(--t)}
a:hover{color:var(--orange)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-.02em;color:var(--green);line-height:1.16}
p{margin:0 0 14px}
ul{margin:0;padding:0}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  border:1px solid transparent;background:transparent;
  font-size:16px;font-weight:700;text-decoration:none;cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.btn svg{width:18px;height:18px;flex:0 0 auto;transition:transform var(--t)}
.btn:hover svg{transform:translateX(4px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 10px 24px -14px rgba(240,78,35,.9)}
.btn-primary:hover{background:var(--orange-d);color:#fff}
.btn-ghost{border-color:rgba(18,60,46,.28);color:var(--green)}
.btn-ghost:hover{background:rgba(18,60,46,.08);color:var(--green)}
.btn-line{border-color:var(--lime);color:var(--lime)}
.btn-line:hover{background:rgba(198,242,78,.14);color:var(--lime)}
.btn-sm{height:44px;padding:0 20px;font-size:15px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;
  color:var(--green);text-decoration:none;border-bottom:1px solid rgba(18,60,46,.3);
  padding-bottom:2px;transition:color var(--t),border-color var(--t);
}
.text-link svg{width:16px;height:16px;transition:transform var(--t)}
.text-link:hover{color:var(--orange);border-color:var(--orange)}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 10px 30px -24px rgba(12,42,32,.7)}
.nav{display:flex;align-items:center;gap:18px;height:76px;transition:height var(--t)}
.site-header.is-scrolled .nav{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--green);
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:17px;font-weight:900;color:var(--green);letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none;margin:0 0 0 auto;padding:0}
.nav-pill{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(18,60,46,.18);color:var(--green);font-size:15px;font-weight:600;
  text-decoration:none;position:relative;transition:background var(--t),color var(--t),border-color var(--t);
}
.nav-pill::after{
  content:"";position:absolute;left:16px;right:16px;bottom:6px;height:2px;
  background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-pill:hover{background:rgba(240,78,35,.08);color:var(--orange);border-color:rgba(240,78,35,.35)}
.nav-pill:hover::after{transform:scaleX(1)}
.nav-pill.is-active{background:var(--green);border-color:var(--green);color:var(--paper)}
.nav-pill.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid rgba(18,60,46,.2);
  background:transparent;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--green);border-radius:2px;transition:var(--t)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:100;background:var(--paper);
  transform:translateX(100%);transition:transform 240ms cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;padding:24px 18px 0;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid rgba(18,60,46,.2);background:transparent;font-size:20px;line-height:1;cursor:pointer;color:var(--green)}
.drawer-list{list-style:none;margin:0;padding:0;flex:1;overflow:auto}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;height:56px;
  border-bottom:1px solid var(--line);color:var(--green);text-decoration:none;font-size:17px;font-weight:700;
}
.drawer-list a.is-active{color:var(--orange)}
.drawer-cta{padding:16px 0 24px}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:24px 0 0;font-size:13px;color:var(--ink-2)}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}
.breadcrumb li::after{content:"/";margin-left:8px;color:rgba(18,60,46,.3)}
.breadcrumb li:last-child::after{display:none}
.breadcrumb a{color:var(--ink-2);text-decoration:none}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb [aria-current="page"]{color:var(--ink-2)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-alt{background:var(--alt)}
.section-dark{background:var(--dark);color:var(--paper)}
.section-dark h2,.section-dark h3{color:var(--paper)}
.sec-head{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:end;margin-bottom:44px}
.sec-head p{color:var(--ink-2);margin:0}
.section-dark .sec-head p{color:rgba(247,245,240,.72)}
h2{font-size:clamp(24px,3.2vw,40px)}
h2::before{
  content:"";display:inline-block;width:8px;height:8px;border-radius:2px;
  background:var(--orange);margin-right:12px;vertical-align:.38em;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.06em;color:var(--orange);margin-bottom:14px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--orange);border-radius:2px}

/* ---------- Hero ---------- */
.hero{padding:52px 0 72px}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
h1{font-size:clamp(28px,4vw,46px);line-height:1.16;margin-bottom:20px}
.hero-lead{font-size:18px;color:var(--ink-2);max-width:34em;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.hero-media{position:relative;padding:0 0 26px 26px}
.hero-block{position:absolute;left:0;bottom:0;width:140px;height:140px;background:var(--orange);border-radius:16px;z-index:0}
.hero-media img{position:relative;z-index:1;width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);background:var(--frame);box-shadow:var(--sh-1)}
.hero-steps{
  list-style:none;display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);margin:0;padding:0;
}
.hero-steps li{
  padding:16px 18px 0 0;font-size:14px;color:var(--ink-2);
  border-right:1px solid var(--line);
}
.hero-steps li:last-child{border-right:0}
.hero-steps .num{
  display:block;font-family:var(--mono);font-size:20px;font-weight:700;color:var(--green);margin-bottom:2px;
}

/* ---------- 图文对照 ---------- */
.figure-row{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.figure-row.is-reverse{grid-template-columns:.95fr 1.05fr}
.figure-row.is-reverse .figure-media{order:2}
.media-frame{position:relative;border-radius:var(--r-img);overflow:hidden;background:var(--frame)}
.media-frame img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform 400ms cubic-bezier(.22,.61,.36,1)}
.media-frame:hover img{transform:scale(1.03)}
.check-list{list-style:none;margin:0;padding:0}
.check-list li{position:relative;padding:14px 0 14px 30px;border-bottom:1px solid var(--line);color:var(--ink)}
.check-list li:first-child{border-top:1px solid var(--line)}
.check-list li::before{content:"✓";position:absolute;left:0;top:14px;color:var(--orange);font-weight:900}

/* ---------- 对比面板 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{
  border-radius:var(--r-card);padding:34px;background:var(--card);
  border:1px solid var(--line);box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t);
}
.compare-col:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.compare-col h3{font-size:22px;margin-bottom:10px}
.compare-col .col-sub{font-size:14px;color:var(--ink-2);margin-bottom:18px}
.compare-col ul{list-style:none}
.compare-col li{padding:13px 0;border-bottom:1px solid var(--line);font-size:15px}
.compare-col li:last-child{border-bottom:0}
.compare-col.is-dark{background:var(--green);border-color:transparent;color:var(--paper);box-shadow:var(--sh-2)}
.compare-col.is-dark h3{color:var(--paper)}
.compare-col.is-dark .col-sub{color:rgba(247,245,240,.7)}
.compare-col.is-dark li{border-color:var(--line-inv);color:rgba(247,245,240,.92)}
.compare-col.is-dark li strong{color:var(--lime)}

/* ---------- 数据表 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);
  overflow-x:auto;box-shadow:var(--sh-1);
}
table{width:100%;border-collapse:collapse;min-width:720px}
caption{text-align:left;padding:18px 20px 0;font-size:14px;color:var(--ink-2)}
th{
  background:var(--green);color:var(--paper);text-align:left;
  padding:16px 20px;font-size:14px;font-weight:700;letter-spacing:.02em;white-space:nowrap;
}
td{padding:16px 20px;border-top:1px solid var(--line);font-size:15px;color:var(--ink-2);vertical-align:top}
tbody tr:nth-child(even){background:var(--alt)}
tbody tr{transition:background var(--t)}
tbody tr:hover{background:rgba(240,78,35,.06)}
td strong{color:var(--green);font-weight:700}
.table-note{margin-top:16px;font-size:13px;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.88fr 1.12fr;gap:48px;align-items:start}
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);transition:background var(--t)}
.faq-item.is-open{background:var(--alt)}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:16px 18px;font-size:17px;font-weight:700;color:var(--green);
  transition:color var(--t);
}
.faq-q:hover{color:var(--orange)}
.faq-icon{
  position:relative;width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(18,60,46,.25);flex:0 0 auto;transition:border-color var(--t),background var(--t);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--green);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform var(--t),opacity var(--t);
}
.faq-icon::before{width:12px;height:2px}
.faq-icon::after{width:2px;height:12px}
.faq-item.is-open .faq-icon{background:var(--orange);border-color:var(--orange)}
.faq-item.is-open .faq-icon::before{background:#fff}
.faq-item.is-open .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms cubic-bezier(.22,.61,.36,1)}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a p{margin:0;padding:0 18px 22px;color:var(--ink-2);line-height:1.85;font-size:16px}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  background:var(--green);color:var(--paper);border-radius:var(--r-card);
  padding:46px 48px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
  box-shadow:var(--sh-2);
}
.cta-band h2{color:var(--paper);font-size:clamp(22px,2.6vw,32px);margin-bottom:10px}
.cta-band p{margin:0;color:rgba(247,245,240,.75);max-width:46em}
.cta-band-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 表单 ---------- */
.contact{padding:96px 0;background:var(--alt)}
.contact-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:56px;align-items:start}
.contact-points{list-style:none;margin:22px 0 0;padding:0}
.contact-points li{padding:14px 0 14px 26px;border-bottom:1px solid var(--line);position:relative;font-size:15px;color:var(--ink-2)}
.contact-points li::before{content:"";position:absolute;left:0;top:22px;width:12px;height:12px;border-radius:3px;background:var(--orange)}
.contact-points li strong{color:var(--green);display:block;font-size:16px}
.contact-card{
  background:var(--dark);color:var(--paper);border-radius:var(--r-card);
  padding:36px;box-shadow:var(--sh-2);
}
.contact-card h3{color:var(--paper);font-size:22px;margin-bottom:8px}
.contact-card .card-sub{color:rgba(247,245,240,.7);font-size:14px;margin-bottom:24px}
.field{display:block;margin-bottom:18px}
.field span{display:block;font-size:14px;margin-bottom:8px;color:rgba(247,245,240,.75)}
.field input,.field textarea{
  width:100%;height:48px;border-radius:10px;padding:0 14px;
  border:1px solid rgba(247,245,240,.18);background:rgba(247,245,240,.06);
  color:var(--paper);transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.65;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(247,245,240,.42)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(240,78,35,.28);background:rgba(247,245,240,.1)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:12px;line-height:1.65;color:rgba(247,245,240,.68);margin:6px 0 20px}
.check input{width:16px;height:16px;margin-top:3px;accent-color:var(--orange);flex:0 0 auto}
.check a{color:var(--lime);text-decoration:underline}
.form-tip{margin-top:14px;font-size:13px;color:var(--lime);display:none}
.form-tip.is-show{display:block}

/* ---------- 弹层 ---------- */
.modal{position:fixed;inset:0;z-index:120;display:none;align-items:center;justify-content:center;padding:24px}
.modal.is-open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(12,42,32,.55);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.modal-card{
  position:relative;z-index:1;width:100%;max-width:520px;max-height:90vh;overflow:auto;
  background:var(--dark);color:var(--paper);border-radius:var(--r-card);padding:32px;
  box-shadow:var(--sh-2);
}
.modal-card h3{color:var(--paper);font-size:22px;margin-bottom:6px}
.modal-close{
  position:absolute;right:16px;top:16px;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(247,245,240,.2);background:transparent;color:var(--paper);
  font-size:20px;line-height:1;cursor:pointer;transition:background var(--t);
}
.modal-close:hover{background:rgba(247,245,240,.12)}

/* ---------- 移动吸底条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;height:56px;
  background:var(--green);color:var(--paper);text-decoration:none;
  align-items:center;justify-content:space-between;gap:12px;padding:0 18px;
  font-size:15px;font-weight:700;
}
.mobile-bar span{display:inline-flex;align-items:center;gap:8px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.mobile-bar svg{width:18px;height:18px;flex:0 0 auto}
.mobile-bar strong{color:var(--lime);font-weight:700;white-space:nowrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--paper);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text{color:var(--paper)}
.footer-brand p{color:rgba(247,245,240,.7);font-size:14px;max-width:30em}
.footer-col h4{color:var(--paper);font-size:15px;margin-bottom:16px;letter-spacing:0}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(247,245,240,.78);text-decoration:none;font-size:14px;transition:color var(--t)}
.footer-col a:hover{color:var(--lime)}
.footer-col p{color:rgba(247,245,240,.7);font-size:14px;margin-bottom:10px}
.footer-grid > *{border-right:1px solid var(--line-inv);padding-right:24px}
.footer-grid > *:last-child{border-right:0;padding-right:0}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-inv);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12px;color:rgba(247,245,240,.6);
}
.footer-bottom a{color:rgba(247,245,240,.72);text-decoration:none}
.footer-bottom a:hover{color:var(--lime)}

/* ---------- 动效 ---------- */
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.reveal{animation:fadeUp 480ms cubic-bezier(.22,.61,.36,1) both}
.reveal.d1{animation-delay:60ms}
.reveal.d2{animation-delay:120ms}
.reveal.d3{animation-delay:180ms}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .media-frame:hover img{transform:none}
  .compare-col:hover{transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .hero-grid{gap:40px}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{padding:0 0 22px 22px}
  .hero-block{width:110px;height:110px}
  .sec-head{grid-template-columns:1fr;gap:14px;align-items:start}
  .figure-row,.figure-row.is-reverse{grid-template-columns:1fr;gap:32px}
  .figure-row.is-reverse .figure-media{order:0}
  .compare{grid-template-columns:1fr}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-grid > *{border-right:0;padding-right:0}
}
@media (max-width:992px){
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:72px 0}
  .contact{padding:72px 0}
  .hero{padding:40px 0 56px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  body{padding-bottom:56px}
  .nav{height:64px}
  .site-header.is-scrolled .nav{height:60px}
  .section{padding:56px 0}
  .section-alt{padding:56px 0}
  .contact{padding:56px 0}
  .hero{padding:32px 0 48px}
  .hero-lead{font-size:16px}
  .hero-steps{grid-template-columns:1fr;border-top:1px solid var(--line)}
  .hero-steps li{border-right:0;border-bottom:1px solid var(--line);padding:12px 0}
  .hero-steps li:last-child{border-bottom:0}
  .hero-media{padding:0 0 18px 18px}
  .cta-band{padding:28px}
  .contact-card{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-bar{display:flex}
  .modal{align-items:flex-end;padding:0}
  .modal-card{max-width:100%;border-radius:16px 16px 0 0;padding:26px 20px 30px}
}
@media (max-width:560px){
  h1{font-size:28px}
  .compare-col{padding:22px}
  .hero-actions .btn{width:100%}
  .cta-band-actions .btn{width:100%}
  .media-frame img{aspect-ratio:16/10}
}