/* roulang page: index */
:root{
  --ink:#14161A;
  --ink-2:#3C4247;
  --muted:#6E7572;
  --bamboo:#2E7D5B;
  --bamboo-deep:#1F5B41;
  --bamboo-tint:#E8F1EC;
  --signal:#D96E28;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E3E1DA;
  --line-strong:rgba(20,22,26,.14);
  --radius:14px;
  --radius-sm:8px;
  --radius-lg:20px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04),0 10px 26px -14px rgba(20,22,26,.12);
  --shadow-2:0 2px 4px rgba(20,22,26,.05),0 22px 44px -20px rgba(31,91,65,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
  --container:1200px;
  --read:780px;
  --bs-primary:#2E7D5B;
  --bs-body-bg:#F7F5F0;
  --bs-body-color:#3C4247;
  --bs-border-color:#E3E1DA;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--bamboo);
  outline-offset:2px;
  border-radius:4px;
}
.container-xl{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--dark{background:var(--ink);color:rgba(255,255,255,.82)}
.section--dark h2,.section--dark h3{color:#fff}
.section-head{max-width:760px;margin-bottom:48px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--bamboo);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--bamboo);border-radius:var(--pill)}
h1{font-size:clamp(28px,4.4vw,46px);line-height:1.18;letter-spacing:-.02em}
h2{font-size:clamp(22px,2.8vw,32px);line-height:1.28}
h3{font-size:19px;line-height:1.4}
.section-sub{font-size:16px;color:var(--muted);margin-top:14px;margin-bottom:0;max-width:680px}
.section--dark .section-sub{color:rgba(255,255,255,.66)}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1)}
.header-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:30px;height:30px;color:var(--bamboo);flex:none}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-main a{position:relative;padding:10px 14px;font-size:15px;font-weight:500;letter-spacing:.02em;color:var(--ink-2)}
.nav-main a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--bamboo);border-radius:var(--pill);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.nav-main a:hover{color:var(--ink)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.active{color:var(--ink);font-weight:600}
.nav-main a.active::after{transform:scaleX(1)}
.header-right{display:flex;align-items:center;gap:14px;flex:none}
.btn-bamboo{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:10px;
  background:var(--bamboo);border:1px solid var(--bamboo);color:#fff;
  font-size:15px;font-weight:500;letter-spacing:.01em;cursor:pointer;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-bamboo:hover{background:var(--bamboo-deep);border-color:var(--bamboo-deep);color:#fff;transform:translateY(-1px)}
.btn-bamboo:active{transform:translateY(0)}
.btn-cta{height:40px;padding:0 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;
  border:1px solid var(--line-strong);border-radius:10px;background:transparent;
  color:var(--ink);font-size:15px;font-weight:500;cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-ghost:hover{border-color:var(--bamboo);color:var(--bamboo);transform:translateY(-1px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--bamboo);font-size:15px;font-weight:500}
.link-arrow .arrow{transition:transform var(--dur) var(--ease)}
.link-arrow:hover .arrow{transform:translateX(4px)}
.nav-toggle{
  width:42px;height:42px;border:1px solid var(--line-strong);border-radius:10px;
  background:var(--surface);display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--ink);border-radius:2px}
.mobile-nav{padding:12px 0 20px;border-top:1px solid var(--line);margin-top:12px}
.mobile-nav a{display:block;padding:12px 4px;font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--line)}
.mobile-nav a.active{color:var(--bamboo);font-weight:600}
.mobile-nav .btn-bamboo{width:100%;margin-top:16px;border-bottom:none}

/* ============ 首屏 ============ */
.hero{padding:84px 0 92px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--pill);
  background:var(--bamboo-tint);color:var(--bamboo-deep);font-size:13px;font-weight:600;margin-bottom:22px;
}
.hero h1{margin-bottom:20px}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 15px;
  border:1px solid var(--line-strong);border-radius:var(--pill);
  background:var(--surface);font-size:14px;color:var(--ink-2);
}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--bamboo);flex:none}
.hero-visual{position:relative}
.hero-visual img{
  position:relative;z-index:2;width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius-lg);box-shadow:var(--shadow-2);
}
.hero-visual::before{
  content:"";position:absolute;left:-24px;bottom:-24px;width:56%;height:58%;
  background:var(--bamboo-tint);border-radius:var(--radius-lg);z-index:0;
}
.hero-visual::after{
  content:"";position:absolute;right:-16px;top:-16px;width:88px;height:88px;
  border-top:2px solid var(--bamboo);border-right:2px solid var(--bamboo);
  border-top-right-radius:var(--radius-lg);opacity:.5;z-index:1;
}

/* ============ 指标 ============ */
.metrics-wrap{border-top:1px solid var(--line);border-bottom:1px solid var(--line);position:relative}
.metrics{display:grid;grid-template-columns:repeat(4,1fr)}
.metric{padding:40px 28px;border-right:1px solid var(--line)}
.metric:last-child{border-right:none}
.metric-value{display:flex;align-items:baseline;gap:4px}
.metric-num{
  font-size:clamp(32px,5vw,56px);font-weight:800;line-height:1;color:var(--ink);
  font-variant-numeric:tabular-nums;letter-spacing:-.03em;
}
.metric-unit{font-size:15px;font-weight:600;color:var(--ink-2)}
.metric-name{display:flex;align-items:center;gap:8px;margin-top:16px;font-size:15px;font-weight:600;color:var(--ink)}
.metric-name::before{content:"";width:6px;height:6px;background:var(--bamboo);border-radius:1px;flex:none}
.metric-desc{font-size:13px;color:var(--muted);margin-top:6px}
.metrics-bar{
  height:3px;width:100%;
  background:linear-gradient(90deg,var(--bamboo),rgba(217,110,40,.05));
  border-radius:var(--pill);
}

/* ============ 服务矩阵 ============ */
.svc-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:22px}
.svc-main{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.svc-main::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--bamboo);
  transform:scaleY(0);transform-origin:top;transition:transform var(--dur) var(--ease);z-index:3;
}
.svc-main:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.svc-main:hover::before{transform:scaleY(1)}
.svc-main:hover .arrow{transform:translateX(4px)}
.svc-main-img{width:100%;aspect-ratio:16/9;object-fit:cover}
.svc-main-body{padding:30px 32px 34px}
.svc-index{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--muted)}
.svc-main-title{font-size:22px;margin:10px 0 12px}
.svc-main-desc{font-size:15px;color:var(--ink-2)}
.svc-side{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.svc-card{
  position:relative;overflow:hidden;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.svc-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--bamboo);
  transform:scaleY(0);transform-origin:top;transition:transform var(--dur) var(--ease);
}
.svc-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.svc-card:hover::before{transform:scaleY(1)}
.svc-card:hover .arrow{transform:translateX(4px)}
.svc-card .svc-index{margin-bottom:12px}
.svc-card h3{font-size:17px;margin-bottom:10px}
.svc-card p{font-size:14px;color:var(--muted);line-height:1.75}
.svc-foot{margin-top:auto;padding-top:16px;font-size:14px;color:var(--bamboo);font-weight:500;display:inline-flex;align-items:center;gap:6px}

/* ============ 对比 ============ */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface)}
.compare-col{padding:38px 34px}
.compare-col--plain{background:var(--paper);border-right:1px solid var(--line)}
.compare-col--ours{background:var(--bamboo-tint)}
.compare-head{display:flex;align-items:center;gap:10px;margin-bottom:26px}
.compare-head h3{font-size:18px}
.dot{width:8px;height:8px;border-radius:50%;flex:none}
.dot--muted{background:var(--muted)}
.dot--bamboo{background:var(--bamboo)}
.bar-row{margin-bottom:22px}
.bar-row:last-child{margin-bottom:0}
.bar-top{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:14px;color:var(--ink-2);margin-bottom:9px}
.bar-val{font-variant-numeric:tabular-nums;font-weight:600;color:var(--ink)}
.bar-track{height:8px;border-radius:var(--pill);background:rgba(20,22,26,.08);overflow:hidden}
.bar{display:block;height:100%;border-radius:var(--pill)}
.bar--muted{background:var(--muted)}
.bar--ours{background:var(--bamboo)}
.bar--signal{background:var(--signal)}

/* ============ 内容列表 ============ */
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.news-card{
  display:flex;flex-direction:column;height:100%;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.news-thumb{display:block;overflow:hidden;aspect-ratio:16/10;background:var(--bamboo-tint)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 12px;border-radius:var(--pill);
  background:var(--bamboo-tint);color:var(--bamboo-deep);
  font-size:12px;font-weight:600;letter-spacing:.02em;margin-bottom:14px;
}
.news-title{font-size:17px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:var(--bamboo)}
.news-desc{
  font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.news-meta .arrow{color:var(--bamboo);transition:transform var(--dur) var(--ease)}
.news-card:hover .news-meta .arrow{transform:translateX(4px)}
.list-empty{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  border:1px dashed var(--line-strong);border-radius:var(--radius-lg);background:var(--bamboo-tint);
  text-align:center;padding:40px 24px;
}
.list-empty p{color:var(--ink-2);font-size:15px;margin:0}

/* ============ 价值要点 ============ */
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.value-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px}
.value-num{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--bamboo)}
.value-card h3{font-size:17px;margin:14px 0 10px}
.value-card p{font-size:14px;color:var(--muted);line-height:1.8}

/* ============ FAQ ============ */
.faq-list{max-width:880px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:color var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--bamboo)}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--bamboo);border-radius:2px;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.faq-icon::before{left:0;top:7.25px;width:16px;height:1.5px}
.faq-icon::after{top:0;left:7.25px;width:1.5px;height:16px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-item[open] summary{color:var(--bamboo)}
.faq-a{
  margin:0 0 24px;padding:2px 0 2px 18px;border-left:3px solid var(--bamboo-tint);
  font-size:15px;line-height:1.85;color:var(--ink-2);
}
.faq-item[open] .faq-a{border-left-color:var(--bamboo)}

/* ============ 表单 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:start}
.contact-points{margin-top:28px;border-top:1px solid var(--line)}
.contact-points li{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-2)}
.contact-points .no{font-size:13px;font-weight:700;color:var(--bamboo);letter-spacing:.1em;flex:none;padding-top:2px}
.contact-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);padding:34px 32px}
.form-row{margin-bottom:18px}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.form-control-x{
  width:100%;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--surface);color:var(--ink);font-size:15px;font-family:inherit;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
textarea.form-control-x{height:auto;padding:12px 14px;line-height:1.7;resize:vertical;min-height:110px}
select.form-control-x{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.form-control-x:focus{outline:none;border-color:var(--bamboo);box-shadow:0 0 0 3px var(--bamboo-tint)}
.form-control-x.is-error{border-color:var(--signal)}
.form-hint{font-size:13px;color:var(--signal);margin-top:6px;display:none}
.form-hint.show{display:block}
.form-note{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.7}
.form-alert{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--radius-sm);
  background:var(--bamboo-tint);color:var(--bamboo-deep);font-size:14px;border-left:3px solid var(--bamboo);
}
.form-alert.show{display:block}

/* ============ CTA 条 ============ */
.cta-band{background:var(--ink);border-radius:var(--radius-lg);padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(20px,2.4vw,28px)}
.cta-band p{color:rgba(255,255,255,.68);margin:12px 0 0;font-size:15px;max-width:620px}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.62);padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.02em}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{color:#5FAF87;width:28px;height:28px}
.footer-brand span{color:#fff;font-size:16px;font-weight:700}
.footer-desc{font-size:13px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.62)}
.footer-links a:hover{color:#5FAF87}
.footer-contact li{font-size:14px;margin-bottom:12px;display:flex;gap:8px}
.footer-contact .k{color:rgba(255,255,255,.42);flex:none}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.52);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#5FAF87}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .svc-grid{grid-template-columns:1fr}
  .svc-side{grid-template-columns:1fr 1fr}
}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .hero{padding:60px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{order:2}
  .metrics{grid-template-columns:1fr 1fr}
  .metric{padding:32px 22px}
  .metric:nth-child(2){border-right:none}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--line)}
  .compare-grid{grid-template-columns:1fr}
  .compare-col--plain{border-right:none;border-bottom:1px solid var(--line)}
  .value-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .cta-band{padding:40px 32px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .section{padding:56px 0}
  .container-xl{padding-inline:20px}
  .header-bar{height:60px}
  .brand-text{font-size:15px}
  .hero{padding:44px 0 60px}
  .hero-lead{font-size:16px}
  .hero-actions .btn-bamboo,.hero-actions .btn-ghost{width:100%}
  .hero-visual::before{left:-12px;bottom:-12px}
  .hero-visual::after{right:-6px;top:-6px;width:60px;height:60px}
  .svc-side{grid-template-columns:1fr}
  .svc-grid{gap:18px}
  .value-grid{grid-template-columns:1fr}
  .metrics{grid-template-columns:1fr 1fr}
  .metric{padding:26px 16px}
  .metric-num{font-size:clamp(28px,9vw,38px)}
  .compare-col{padding:28px 22px}
  .contact-card{padding:26px 20px}
  .cta-band{padding:32px 22px;border-radius:var(--radius)}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .list-head{margin-bottom:28px}
  .faq-item summary{padding:20px 2px;font-size:15px}
}
@media (max-width:575.98px){
  .metric{padding:22px 14px}
  .metric-desc{font-size:12px}
  .chip{font-size:13px;padding:7px 12px}
  .news-body{padding:18px 18px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --ink:#14161A;
  --ink-2:#3C4247;
  --muted:#6E7572;
  --bamboo:#2E7D5B;
  --bamboo-deep:#1F5B41;
  --bamboo-tint:#E8F1EC;
  --signal:#D96E28;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E3E1DA;
  --line-strong:rgba(20,22,26,.14);
  --radius:14px;
  --radius-sm:8px;
  --radius-lg:20px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04), 0 10px 26px -14px rgba(20,22,26,.12);
  --shadow-2:0 2px 4px rgba(20,22,26,.05), 0 22px 44px -20px rgba(31,91,65,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
  --container:1200px;
  --read:780px;

  --bs-primary:#2E7D5B;
  --bs-body-bg:#F7F5F0;
  --bs-body-color:#3C4247;
  --bs-border-color:#E3E1DA;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--bamboo);text-decoration:none;text-underline-offset:3px;transition:color var(--dur) var(--ease);}
a:hover{color:var(--bamboo-deep);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
::selection{background:var(--bamboo-tint);color:var(--ink);}
:focus-visible{outline:2px solid var(--bamboo);outline-offset:2px;border-radius:4px;}

.container-xl{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 顶部进度条 ---------- */
.read-progress{
  position:fixed;left:0;top:0;height:3px;width:0;z-index:1200;
  background:linear-gradient(90deg,var(--bamboo),var(--signal));
  transition:width 80ms linear;
}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  height:72px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;
  white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.brand-mark{width:26px;height:26px;color:var(--bamboo);flex:0 0 auto;}
.nav-main{display:flex;align-items:center;gap:34px;}
.nav-main a{
  position:relative;
  font-size:15px;font-weight:500;letter-spacing:.02em;
  color:var(--ink-2);
  padding:6px 0;
}
.nav-main a::after{
  content:"";position:absolute;left:0;bottom:0;
  width:0;height:2px;background:var(--bamboo);
  transition:width var(--dur) var(--ease);
}
.nav-main a:hover{color:var(--ink);}
.nav-main a:hover::after{width:100%;}
.nav-main a.active{color:var(--ink);font-weight:600;}
.nav-main a.active::after{width:100%;}
.header-cta{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 18px;
  border-radius:10px;
  background:var(--bamboo);color:#fff;
  font-size:15px;font-weight:500;
  box-shadow:0 8px 20px -12px rgba(31,91,65,.7);
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.header-cta:hover{background:var(--bamboo-deep);color:#fff;transform:translateY(-1px);}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:var(--surface);color:var(--ink);
}
.offcanvas.menu-panel{background:var(--paper);width:300px;}
.menu-panel .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.menu-panel .offcanvas-body{padding:18px 20px 32px;}
.menu-list li+li{border-top:1px solid var(--line);}
.menu-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 0;color:var(--ink-2);font-size:16px;
}
.menu-list a:hover,.menu-list a.active{color:var(--bamboo);}
.menu-cta{
  display:flex;align-items:center;justify-content:center;
  margin-top:22px;height:46px;border-radius:12px;
  background:var(--bamboo);color:#fff;font-size:15px;
}
.menu-cta:hover{background:var(--bamboo-deep);color:#fff;}

/* ---------- 文章沉浸式页头 ---------- */
.article-hero{
  position:relative;
  background-color:var(--ink);
  background-image:
    linear-gradient(180deg,rgba(20,22,26,.82) 0%,rgba(20,22,26,.93) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:26px 0 60px;
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,var(--bamboo) 0%,rgba(217,110,40,.85) 55%,rgba(217,110,40,0) 100%);
}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(255,255,255,.62);
  margin-bottom:34px;
}
.crumbs a{color:rgba(255,255,255,.72);}
.crumbs a:hover{color:#5FAF87;}
.crumbs .sep{color:rgba(255,255,255,.34);}
.crumbs .current{color:rgba(255,255,255,.9);}

.article-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:var(--pill);
  background:rgba(46,125,91,.24);
  border:1px solid rgba(95,175,135,.42);
  color:#9FD9BB;
  font-size:12px;letter-spacing:.06em;
}
.article-hero h1{
  color:#fff;
  font-size:clamp(26px,3.6vw,38px);
  line-height:1.32;
  letter-spacing:-.01em;
  margin:20px 0 0;
  max-width:960px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.6);
  font-variant-numeric:tabular-nums;
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.34);}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{color:rgba(159,217,187,.85);font-size:12px;}

/* ---------- 正文布局 ---------- */
.article-layout{
  max-width:1120px;
  margin:0 auto;
  padding:64px 24px 0;
}
.article-main{
  min-width:0;
  max-width:var(--read);
  margin:0 auto;
}
.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--ink-2);
}
.article-body > p:first-of-type{
  font-size:18px;
  color:var(--ink-2);
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  font-size:clamp(22px,2.8vw,28px);
  line-height:1.35;
  margin:2.4em 0 .9em;
  padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;
  width:4px;height:18px;border-radius:2px;background:var(--bamboo);
}
.article-body h3{
  font-size:20px;font-weight:600;line-height:1.45;
  margin:2em 0 .7em;
}
.article-body h4{
  font-size:16px;font-weight:600;
  margin:1.6em 0 .5em;
}
.article-body ul,.article-body ol{
  margin:0 0 1.4em;
  padding-left:1.4em;
}
.article-body ul li{list-style:none;position:relative;padding-left:18px;margin-bottom:.5em;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.78em;
  width:6px;height:6px;border-radius:2px;background:var(--bamboo);
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:.5em;padding-left:4px;}
.article-body ol li::marker{color:var(--bamboo);font-weight:600;}
.article-body a{
  color:var(--bamboo);text-decoration:underline;
  text-decoration-thickness:1px;text-underline-offset:3px;
}
.article-body a:hover{color:var(--bamboo-deep);}
.article-body img{
  width:100%;border-radius:12px;margin:1.6em 0 .6em;
  box-shadow:var(--shadow-1);
}
.article-body figcaption,
.article-body .caption{
  font-size:13px;color:var(--muted);text-align:center;margin-bottom:1.6em;
}
.article-body blockquote{
  margin:1.6em 0;
  padding:18px 20px;
  border-left:3px solid var(--bamboo);
  background:var(--bamboo-tint);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
}
.article-body thead th{
  background:var(--paper);color:var(--ink);
  font-weight:600;text-align:left;
}
.article-body th,.article-body td{
  padding:12px 14px;border-bottom:1px solid var(--line);
}
.article-body code{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:6px;
  padding:2px 7px;
  font-size:14px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color:var(--ink);
}
.article-body hr{
  border:0;border-top:1px solid var(--line);margin:2.4em 0;
}

/* 空态 */
.article-empty{
  border:1px dashed var(--line);
  background:var(--bamboo-tint);
  border-radius:var(--radius);
  padding:56px 28px;
  text-align:center;
}
.article-empty-title{
  font-size:20px;font-weight:700;color:var(--ink);margin-bottom:10px;
}
.article-empty-desc{
  font-size:14px;color:var(--muted);margin-bottom:24px;
}

/* 右侧目录 */
.article-toc{
  display:none;
}
.toc-inner{
  position:sticky;top:104px;
  border-left:1px solid var(--line);
  padding-left:22px;
}
.toc-inner h4{
  font-size:13px;font-weight:600;letter-spacing:.12em;
  color:var(--muted);margin-bottom:16px;
}
.toc-inner ul li{margin-bottom:2px;}
.toc-inner a{
  display:block;
  position:relative;
  padding:8px 0 8px 14px;
  font-size:14px;line-height:1.6;
  color:var(--muted);
  border-left:2px solid transparent;
  margin-left:-24px;
  padding-left:22px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.toc-inner a:hover{color:var(--ink);}
.toc-inner a.is-active{
  color:var(--bamboo);font-weight:600;border-left-color:var(--bamboo);
}

/* ---------- 相关推荐 / 上下篇 ---------- */
.article-foot{
  max-width:1120px;
  margin:0 auto;
  padding:56px 24px 0;
}
.section-label{
  display:flex;align-items:center;gap:12px;
  margin-bottom:26px;
}
.section-label h2{
  font-size:clamp(20px,2.4vw,26px);
}
.section-label .bar{
  width:4px;height:20px;border-radius:2px;background:var(--bamboo);
}
.rel-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.rel-card{
  display:block;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 22px 20px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rel-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:rgba(46,125,91,.35);
}
.rel-tag{
  display:inline-block;
  padding:2px 10px;border-radius:var(--pill);
  background:var(--bamboo-tint);color:var(--bamboo);
  font-size:12px;margin-bottom:12px;
}
.rel-card h3{
  font-size:16px;font-weight:600;line-height:1.6;
  color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  margin-bottom:12px;
}
.rel-card time{
  font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;
}
.rel-card .more{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:14px;font-size:13px;color:var(--bamboo);
}
.rel-card .more i{transition:transform var(--dur) var(--ease);}
.rel-card:hover .more i{transform:translateX(4px);}

.prev-next{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
  margin-top:36px;
}
.pn-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px 22px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.pn-item:hover{border-color:rgba(46,125,91,.35);box-shadow:var(--shadow-1);}
.pn-item .k{
  font-size:13px;color:var(--muted);margin-bottom:8px;display:block;
}
.pn-item .v{font-size:15px;font-weight:600;color:var(--ink);}
.pn-item.pn-right{text-align:right;}

.back-link{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:34px;font-size:15px;color:var(--muted);
}
.back-link i{transition:transform var(--dur) var(--ease);}
.back-link:hover{color:var(--bamboo);}
.back-link:hover i{transform:translateX(-3px);}

/* 结尾深色区块 */
.closing-band{
  margin-top:72px;
  background:var(--ink);
  color:#fff;
  padding:64px 0;
}
.closing-band h2{
  color:#fff;font-size:clamp(22px,2.8vw,30px);line-height:1.35;
}
.closing-band p{
  color:rgba(255,255,255,.66);font-size:15px;margin:14px 0 26px;max-width:640px;
}
.btn-bamboo{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border:0;border-radius:12px;
  background:var(--bamboo);color:#fff;
  font-size:15px;font-weight:500;
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-bamboo:hover{
  background:var(--bamboo-deep);color:#fff;
  transform:translateY(-1px);
  box-shadow:0 14px 28px -16px rgba(31,91,65,.8);
}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border:1px solid rgba(255,255,255,.28);
  border-radius:12px;color:#fff;background:transparent;
  font-size:15px;font-weight:500;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.btn-ghost:hover{border-color:#5FAF87;color:#fff;background:rgba(95,175,135,.12);}
.band-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.78);
  padding:64px 0 28px;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-size:17px;font-weight:700;margin-bottom:16px;
}
.footer-brand .brand-mark{color:#5FAF87;}
.footer-desc{
  font-size:13px;line-height:1.9;color:rgba(255,255,255,.62);
  max-width:320px;margin-bottom:18px;
}
.footer-social{display:flex;gap:12px;}
.footer-social a{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:50%;
  border:1px solid rgba(255,255,255,.16);
  color:rgba(255,255,255,.7);font-size:14px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-social a:hover{color:#5FAF87;border-color:#5FAF87;}
.site-footer h4{
  color:#fff;font-size:14px;font-weight:600;letter-spacing:.06em;
  margin-bottom:18px;
}
.footer-links li{margin-bottom:11px;}
.footer-links a{
  font-size:13.5px;color:rgba(255,255,255,.66);
}
.footer-links a:hover{color:#5FAF87;}
.footer-contact li{
  display:flex;gap:8px;font-size:13.5px;margin-bottom:11px;
  color:rgba(255,255,255,.66);
}
.footer-contact .k{color:rgba(255,255,255,.42);white-space:nowrap;}
.footer-contact a{color:rgba(255,255,255,.78);text-decoration:underline;text-underline-offset:3px;}
.footer-contact a:hover{color:#5FAF87;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;color:rgba(255,255,255,.62);
}
.footer-bottom a{color:rgba(255,255,255,.62);text-decoration:underline;text-underline-offset:3px;}
.footer-bottom a:hover{color:#5FAF87;}

/* ---------- 响应式 ---------- */
@media (min-width:1200px){
  .article-layout{
    display:grid;
    grid-template-columns:minmax(0,var(--read)) 240px;
    gap:64px;
    justify-content:center;
    align-items:start;
  }
  .article-main{margin:0;}
  .article-toc{display:block;}
}
@media (max-width:1199px){
  .article-layout{padding-top:56px;}
}
@media (max-width:991px){
  .header-inner{height:64px;}
  .nav-main{gap:24px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .header-inner{height:60px;}
  .nav-main{display:none;}
  .header-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .article-hero{padding:20px 0 44px;}
  .crumbs{margin-bottom:24px;}
  .article-layout{padding:40px 20px 0;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-foot{padding:40px 20px 0;}
  .rel-grid{grid-template-columns:1fr;}
  .prev-next{grid-template-columns:1fr;}
  .pn-item.pn-right{text-align:left;}
  .closing-band{padding:48px 0;}
  .closing-band .btn-bamboo,.closing-band .btn-ghost{width:100%;}
  .site-footer{padding:48px 0 24px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575px){
  .container-xl{padding:0 18px;}
  .article-layout{padding:32px 18px 0;}
  .article-foot{padding:32px 18px 0;}
  .article-body h2{margin-top:2em;}
  .footer-grid{grid-template-columns:1fr;}
  .brand{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .rel-card:hover,.btn-bamboo:hover,.header-cta:hover{transform:none;}
}

/* roulang page: category1 */
:root{
  --ink:#14161A;
  --ink-2:#3C4247;
  --muted:#6E7572;
  --bamboo:#2E7D5B;
  --bamboo-deep:#1F5B41;
  --bamboo-tint:#E8F1EC;
  --signal:#D96E28;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E3E1DA;
  --line-strong:rgba(20,22,26,.14);
  --radius:14px;
  --radius-sm:8px;
  --radius-lg:20px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04),0 10px 26px -14px rgba(20,22,26,.12);
  --shadow-2:0 2px 4px rgba(20,22,26,.05),0 22px 44px -20px rgba(31,91,65,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
  --container:1200px;
  --read:780px;

  --bs-primary:#2E7D5B;
  --bs-body-bg:#F7F5F0;
  --bs-body-color:#3C4247;
  --bs-border-color:#E3E1DA;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}

img{max-width:100%;display:block;}
a{color:var(--bamboo);text-decoration:none;text-underline-offset:3px;transition:color var(--dur) var(--ease);}
a:hover{color:var(--bamboo-deep);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}

:focus-visible{outline:2px solid var(--bamboo);outline-offset:2px;}

.container-xl{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,245,240,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:24px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-size:17px;
  font-weight:700;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:28px;
  height:28px;
  color:var(--bamboo);
  flex:0 0 auto;
}
.nav-main{
  margin-left:auto;
  align-items:center;
  gap:32px;
}
.nav-main a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  color:var(--ink-2);
  font-size:15px;
  font-weight:500;
  letter-spacing:.02em;
  white-space:nowrap;
}
.nav-main a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--bamboo);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.nav-main a:hover{color:var(--ink);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.active{color:var(--ink);}
.nav-main a.active::after{transform:scaleX(1);}

.btn-bamboo{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border:1px solid var(--bamboo);
  border-radius:10px;
  background:var(--bamboo);
  color:#fff;
  font-size:15px;
  font-weight:500;
  letter-spacing:.02em;
  cursor:pointer;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-bamboo:hover{
  background:var(--bamboo-deep);
  border-color:var(--bamboo-deep);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--shadow-1);
}
.btn-bamboo:active{transform:translateY(0);}

.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border:1px solid var(--line-strong);
  border-radius:10px;
  background:transparent;
  color:var(--ink);
  font-size:15px;
  font-weight:500;
  letter-spacing:.02em;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn-ghost:hover{
  border-color:var(--bamboo);
  color:var(--bamboo-deep);
  background:var(--bamboo-tint);
  transform:translateY(-1px);
}
.btn-ghost--light{
  border-color:rgba(255,255,255,.34);
  color:#F2F1EC;
}
.btn-ghost--light:hover{
  border-color:var(--bamboo-tint);
  color:#fff;
  background:rgba(232,241,236,.12);
}

.header-cta{height:40px;min-height:40px;padding:0 18px;}

.nav-toggle{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border:1px solid var(--line-strong);
  border-radius:10px;
  background:transparent;
  color:var(--ink);
  cursor:pointer;
}
.nav-toggle svg{width:20px;height:20px;}

.nav-drawer{
  background:var(--paper);
  color:var(--ink-2);
  width:290px;
  border-left:1px solid var(--line);
}
.nav-drawer .offcanvas-header{
  border-bottom:1px solid var(--line);
  padding:18px 22px;
}
.nav-drawer .offcanvas-title{
  font-size:16px;
  font-weight:700;
  color:var(--ink);
}
.nav-drawer .offcanvas-body{padding:20px 22px;}
.drawer-links{display:flex;flex-direction:column;gap:4px;}
.drawer-links a{
  display:block;
  padding:12px 2px;
  color:var(--ink-2);
  font-size:15px;
  font-weight:500;
  border-bottom:1px solid var(--line);
}
.drawer-links a.active{color:var(--bamboo-deep);}
.drawer-links a:hover{color:var(--ink);}
.drawer-cta{margin-top:22px;width:100%;}

/* ---------- breadcrumb ---------- */
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--bamboo);}
.crumb .sep{color:var(--line-strong);}
.crumb .now{color:var(--ink-2);}

/* ---------- immersive hero ---------- */
.cat-hero{
  position:relative;
  background:var(--ink);
  color:#EDECE7;
  overflow:hidden;
  isolation:isolate;
}
.cat-hero-bg{
  position:absolute;
  inset:0;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  opacity:.42;
  filter:saturate(.75);
  z-index:-2;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(160deg,rgba(20,22,26,.84) 0%,rgba(20,22,26,.66) 55%,rgba(20,22,26,.88) 100%);
  z-index:-1;
}
.cat-hero .container-xl{
  padding-top:56px;
  padding-bottom:64px;
}
.cat-hero .crumb{color:rgba(255,255,255,.62);}
.cat-hero .crumb a{color:rgba(255,255,255,.72);}
.cat-hero .crumb a:hover{color:#5FAF87;}
.cat-hero .crumb .sep{color:rgba(255,255,255,.32);}
.cat-hero .crumb .now{color:#EDECE7;}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:26px;
  padding:6px 14px;
  border:1px solid rgba(95,175,135,.5);
  border-radius:var(--pill);
  color:#8FCBAE;
  font-size:13px;
  letter-spacing:.08em;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;
  border-radius:2px;
  background:var(--bamboo);
}
.cat-hero h1{
  margin-top:20px;
  max-width:900px;
  color:#fff;
  font-size:clamp(28px,4.4vw,46px);
  line-height:1.18;
  letter-spacing:-.02em;
}
.cat-hero .hero-line{
  margin-top:18px;
  max-width:760px;
  color:rgba(255,255,255,.78);
  font-size:17px;
  line-height:1.85;
}
.hero-actions{
  margin-top:32px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-chips{
  margin-top:36px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  padding-top:26px;
  border-top:1px solid rgba(255,255,255,.14);
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 15px;
  border:1px solid rgba(255,255,255,.24);
  border-radius:var(--pill);
  color:rgba(255,255,255,.86);
  font-size:14px;
  line-height:1.6;
}
.chip i{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--bamboo);
  flex:0 0 auto;
}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section--tight{padding:80px 0;}
.section--paper{background:var(--paper);}
.section--white{background:var(--surface);}
.section--tint{background:var(--bamboo-tint);}

.section-head{max-width:760px;margin-bottom:44px;}
.section-head .kicker{
  display:inline-block;
  margin-bottom:12px;
  color:var(--bamboo-deep);
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
}
.section-head h2{
  font-size:clamp(22px,2.8vw,32px);
  line-height:1.28;
}
.section-head p{
  margin-top:14px;
  color:var(--muted);
  font-size:15px;
}

/* ---------- lead block: left image right text ---------- */
.lead-grid{
  display:grid;
  grid-template-columns:minmax(0,.95fr) minmax(0,1.15fr);
  gap:56px;
  align-items:start;
}
.lead-figure{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  background:var(--bamboo-tint);
}
.lead-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.lead-figure figcaption{
  padding:14px 18px;
  background:var(--surface);
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:13px;
}
.lead-figure .figure-tag{
  position:absolute;
  top:16px;
  left:16px;
  padding:6px 13px;
  border-radius:var(--pill);
  background:rgba(20,22,26,.72);
  color:#EDECE7;
  font-size:12px;
  letter-spacing:.06em;
}
.lead-copy p + p{margin-top:1.2em;}
.lead-copy p{
  color:var(--ink-2);
  font-size:16px;
  line-height:1.85;
}
.lead-copy .lead-note{
  color:var(--muted);
  font-size:14px;
}

.step-list{margin-top:34px;border-top:1px solid var(--line);}
.step-list li{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:18px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease);
}
.step-list li:hover{background:rgba(232,241,236,.5);}
.step-no{
  color:var(--bamboo);
  font-size:20px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  line-height:1.5;
}
.step-list h4{
  font-size:16px;
  font-weight:600;
  color:var(--ink);
}
.step-list p{
  margin-top:6px;
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
}

/* ---------- spec list ---------- */
.spec-wrap{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.spec-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding:26px 30px 20px;
  border-bottom:1px solid var(--line);
}
.spec-head h3{font-size:19px;font-weight:600;}
.spec-head span{color:var(--muted);font-size:13px;}
.spec-list{padding:6px 30px 24px;}
.spec-row{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:20px;
  padding:18px 0;
  border-bottom:1px solid var(--line);
  align-items:start;
}
.spec-row:last-child{border-bottom:0;}
.spec-k{
  color:var(--muted);
  font-size:14px;
  letter-spacing:.02em;
}
.spec-v{
  color:var(--ink-2);
  font-size:15px;
  line-height:1.8;
}
.spec-v strong{color:var(--ink);font-weight:600;}

/* ---------- timeline / process ---------- */
.flow{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  border-top:2px solid var(--line);
  margin-top:8px;
}
.flow-item{
  position:relative;
  padding:34px 26px 30px 0;
}
.flow-item::before{
  content:"";
  position:absolute;
  top:-2px;left:0;
  width:44px;height:2px;
  background:var(--bamboo);
}
.flow-item .flow-idx{
  display:block;
  color:var(--muted);
  font-size:13px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.12em;
}
.flow-item h4{
  margin-top:14px;
  font-size:17px;
  font-weight:600;
}
.flow-item p{
  margin-top:10px;
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:var(--read);
  margin:0 auto;
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:22px 4px;
  cursor:pointer;
  list-style:none;
  color:var(--ink);
  font-size:16px;
  font-weight:600;
  line-height:1.65;
  transition:color var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";
  flex:0 0 auto;
  margin-left:auto;
  margin-top:6px;
  width:14px;
  height:14px;
  border-right:1.5px solid var(--muted);
  border-bottom:1.5px solid var(--muted);
  transform:rotate(45deg);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.faq-item[open] summary{color:var(--bamboo-deep);}
.faq-item[open] summary::after{
  transform:rotate(-135deg);
  border-color:var(--bamboo);
}
.faq-item .faq-answer{
  margin:0 0 24px 0;
  padding:16px 20px;
  border-left:3px solid var(--bamboo);
  background:var(--bamboo-tint);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--ink-2);
  font-size:15px;
  line-height:1.85;
}

/* ---------- related links ---------- */
.related{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:32px 34px;
  box-shadow:var(--shadow-1);
}
.related h3{
  font-size:17px;
  font-weight:600;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.related-links{
  margin-top:8px;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:0 36px;
}
.related-links a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:15px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink-2);
  font-size:15px;
}
.related-links a span{
  color:var(--bamboo);
  font-variant-numeric:tabular-nums;
  font-size:13px;
}
.related-links a .arrow{
  margin-left:auto;
  color:var(--muted);
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}
.related-links a:hover{color:var(--bamboo-deep);}
.related-links a:hover .arrow{transform:translateX(4px);color:var(--bamboo);}

/* ---------- dark CTA band ---------- */
.cta-band{
  background:var(--ink);
  color:#EDECE7;
  border-radius:var(--radius-lg);
  padding:52px 48px;
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-60px;top:-60px;
  width:260px;height:260px;
  border:1px solid rgba(46,125,91,.4);
  border-radius:50%;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:40px;bottom:-90px;
  width:180px;height:180px;
  border:1px solid rgba(217,110,40,.22);
  border-radius:50%;
}
.cta-band h3{
  color:#fff;
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.35;
  max-width:620px;
}
.cta-band p{
  margin-top:14px;
  color:rgba(255,255,255,.7);
  font-size:15px;
  max-width:620px;
  position:relative;
  z-index:1;
}
.cta-band .cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  justify-content:flex-end;
  position:relative;
  z-index:1;
}

/* ---------- form ---------- */
.form-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-1);
  padding:34px 32px;
}
.form-panel h3{font-size:19px;font-weight:600;}
.form-panel .form-hint{
  margin-top:8px;
  color:var(--muted);
  font-size:14px;
}
.field{margin-top:20px;}
.field label{
  display:block;
  margin-bottom:8px;
  color:var(--ink);
  font-size:14px;
  font-weight:500;
}
.field .form-control,
.field .form-select{
  width:100%;
  height:46px;
  padding:0 14px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--surface);
  color:var(--ink-2);
  font-size:15px;
  font-family:inherit;
  box-shadow:none;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.field textarea.form-control{
  height:auto;
  min-height:120px;
  padding:12px 14px;
  line-height:1.75;
  resize:vertical;
}
.field .form-control:focus,
.field .form-select:focus{
  outline:none;
  border-color:var(--bamboo);
  box-shadow:0 0 0 3px var(--bamboo-tint);
}
.form-privacy{
  margin-top:16px;
  color:var(--muted);
  font-size:12px;
  line-height:1.7;
}
.form-submit{width:100%;margin-top:22px;}
.form-status{
  margin-top:14px;
  padding:11px 15px;
  border-radius:var(--radius-sm);
  background:var(--bamboo-tint);
  color:var(--bamboo-deep);
  font-size:14px;
  display:none;
}
.form-status.is-visible{display:block;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:52px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
}
.footer-brand .brand-mark{color:#5FAF87;}
.footer-desc{
  margin-top:16px;
  max-width:360px;
  color:rgba(255,255,255,.62);
  font-size:14px;
  line-height:1.85;
}
.site-footer h4{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  color:rgba(255,255,255,.68);
  font-size:14px;
}
.footer-links a:hover{color:#5FAF87;}
.footer-contact{display:flex;flex-direction:column;gap:11px;}
.footer-contact li{
  color:rgba(255,255,255,.68);
  font-size:14px;
  line-height:1.7;
}
.footer-contact .k{color:rgba(255,255,255,.45);}
.footer-contact a{color:#5FAF87;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  align-items:center;
  justify-content:space-between;
  padding:22px 0 30px;
  border-top:1px solid rgba(255,255,255,.12);
  color:rgba(255,255,255,.62);
  font-size:13px;
}
.footer-bottom a{color:rgba(255,255,255,.62);}
.footer-bottom a:hover{color:#5FAF87;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .section{padding:80px 0;}
  .section--tight{padding:70px 0;}
  .lead-grid{gap:40px;}
}

@media (max-width:991.98px){
  .section{padding:72px 0;}
  .section--tight{padding:64px 0;}
  .lead-grid{grid-template-columns:1fr;gap:34px;}
  .lead-figure img{aspect-ratio:16/10;}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px;}
  .flow-item{padding:28px 0 26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{grid-template-columns:1fr;padding:44px 34px;}
  .cta-band .cta-actions{justify-content:flex-start;}
  .related-links{grid-template-columns:1fr;gap:0;}
}

@media (max-width:767.98px){
  .container-xl{padding-left:20px;padding-right:20px;}
  .header-inner{height:60px;}
  .brand{font-size:15px;}
  .brand-mark{width:24px;height:24px;}
  .section{padding:56px 0;}
  .section--tight{padding:52px 0;}
  .cat-hero .container-xl{padding-top:36px;padding-bottom:44px;}
  .cat-hero .hero-line{font-size:15px;}
  .hero-actions{width:100%;}
  .hero-actions .btn-bamboo,
  .hero-actions .btn-ghost{flex:1 1 100%;}
  .chip{font-size:13px;padding:6px 13px;}
  .section-head{margin-bottom:32px;}
  .step-list li{grid-template-columns:44px 1fr;gap:14px;padding:18px 0;}
  .spec-head{padding:22px 20px 16px;}
  .spec-list{padding:4px 20px 18px;}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:15px 0;}
  .flow{grid-template-columns:1fr;gap:0;}
  .flow-item{padding:24px 0 22px;}
  .related{padding:26px 22px;}
  .cta-band{padding:36px 22px;border-radius:var(--radius);}
  .cta-band .cta-actions .btn-bamboo,
  .cta-band .cta-actions .btn-ghost{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .site-footer{padding-top:52px;margin-top:64px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .form-panel{padding:26px 22px;}
}

@media (max-width:575.98px){
  body{font-size:15px;}
  .cat-hero h1{font-size:clamp(24px,7vw,30px);}
  .section-head h2{font-size:22px;}
  .lead-figure img{aspect-ratio:4/3;}
  .spec-v{font-size:14px;}
  .faq-item summary{font-size:15px;padding:18px 2px;}
  .faq-item .faq-answer{font-size:14px;padding:14px 16px;}
}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --ink:#14161A;
  --ink-2:#3C4247;
  --muted:#6E7572;
  --bamboo:#2E7D5B;
  --bamboo-deep:#1F5B41;
  --bamboo-tint:#E8F1EC;
  --signal:#D96E28;
  --paper:#F7F5F0;
  --surface:#FFFFFF;
  --line:#E3E1DA;
  --line-strong:rgba(20,22,26,.14);
  --radius:14px;
  --radius-sm:8px;
  --radius-lg:20px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.04), 0 10px 26px -14px rgba(20,22,26,.12);
  --shadow-2:0 2px 4px rgba(20,22,26,.05), 0 22px 44px -20px rgba(31,91,65,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
  --container:1200px;
  --read:780px;

  --bs-primary:#2E7D5B;
  --bs-body-bg:#F7F5F0;
  --bs-body-color:#3C4247;
  --bs-border-color:#E3E1DA;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--bamboo);text-decoration:none;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
a:hover{color:var(--bamboo-deep);}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em;}
h1{font-size:clamp(28px,4.4vw,46px);line-height:1.18;}
h2{font-size:clamp(22px,2.8vw,32px);line-height:1.28;}
h3{font-size:19px;line-height:1.4;}
h4{font-size:16px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;}
:focus-visible{outline:2px solid var(--bamboo);outline-offset:2px;border-radius:4px;}

.container-xl{
  width:100%;
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,240,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  font-weight:700;
  flex:0 0 auto;
}
.brand:hover{color:var(--ink);}
.brand-mark{width:30px;height:30px;color:var(--bamboo);flex:0 0 auto;}
.brand-text{font-size:17px;letter-spacing:.01em;white-space:nowrap;}
.nav-main{margin-left:auto;align-items:center;gap:28px;}
.nav-main a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  color:var(--ink-2);
  font-size:15px;
  font-weight:500;
  letter-spacing:.02em;
  white-space:nowrap;
}
.nav-main a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--bamboo);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.nav-main a:hover{color:var(--ink);}
.nav-main a:hover::after{transform:scaleX(1);}
.nav-main a.active{color:var(--ink);}
.nav-main a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:4px;}
.nav-toggle{
  height:40px;
  padding:0 16px;
  border:1px solid var(--line-strong);
  border-radius:10px;
  background:var(--surface);
  color:var(--ink);
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--bamboo);color:var(--bamboo);}
.mobile-nav{
  display:none;
  border-top:1px solid var(--line);
  padding:10px 24px 20px;
  background:var(--paper);
}
.mobile-nav.open{display:block;}
.mobile-nav a{
  display:block;
  padding:13px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink-2);
  font-size:15px;
  font-weight:500;
}
.mobile-nav a.active{color:var(--bamboo);}
.mobile-nav a.m-cta{
  margin-top:16px;
  border:0;
  border-radius:10px;
  background:var(--bamboo);
  color:var(--surface);
  text-align:center;
  padding:13px 18px;
}
.mobile-nav a.m-cta:hover{background:var(--bamboo-deep);color:var(--surface);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:10px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:500;
  letter-spacing:.02em;
  cursor:pointer;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-bamboo{background:var(--bamboo);color:var(--surface);}
.btn-bamboo:hover{background:var(--bamboo-deep);color:var(--surface);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-outline-light{
  background:transparent;
  border-color:var(--line);
  color:var(--surface);
}
.btn-outline-light:hover{
  background:var(--ink);
  border-color:var(--bamboo);
  color:var(--surface);
  transform:translateY(-1px);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ============ 面包屑与首屏宽图 ============ */
.crumb{
  padding:26px 0 0;
  font-size:13px;
  color:var(--muted);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--bamboo);}
.crumb .sep{margin:0 8px;}
.crumb .current{color:var(--ink-2);}

.hero-band{
  position:relative;
  margin-top:20px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  min-height:clamp(340px,40vw,470px);
  display:flex;
  align-items:flex-end;
  background:var(--ink);
  box-shadow:var(--shadow-2);
}
.hero-band-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:0;
}
.hero-band-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(20,22,26,.42) 0%,rgba(20,22,26,.82) 100%);
}
.hero-inner{
  position:relative;
  z-index:2;
  padding:clamp(24px,4vw,52px);
  width:100%;
}
.hero-tag{
  display:inline-block;
  padding:5px 14px;
  border-radius:var(--pill);
  background:var(--bamboo-tint);
  color:var(--bamboo-deep);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:18px;
}
.hero-title{
  color:var(--surface);
  max-width:24ch;
  margin-bottom:16px;
}
.hero-sub{
  color:rgba(255,255,255,.82);
  font-size:16px;
  line-height:1.85;
  max-width:56ch;
  margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 15px;
  border:1px solid rgba(255,255,255,.28);
  border-radius:var(--pill);
  font-size:14px;
  color:rgba(255,255,255,.86);
}
.chip::before{
  content:"";
  width:6px;height:6px;
  border-radius:1px;
  background:var(--bamboo);
  flex:0 0 auto;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section-tight{padding:76px 0;}
.section-head{max-width:64ch;margin-bottom:48px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--bamboo);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:18px;height:2px;
  background:var(--bamboo);
  border-radius:var(--pill);
}
.section-desc{
  margin-top:14px;
  color:var(--muted);
  font-size:15px;
  line-height:1.9;
}

/* ============ 属性面板 ============ */
.spec-panel{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  background:var(--ink);
  border-radius:var(--radius-lg);
  overflow:hidden;
}
.spec-item{
  padding:34px 28px;
  border-right:1px solid rgba(255,255,255,.12);
}
.spec-item:last-child{border-right:0;}
.spec-num{
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--bamboo);
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.spec-label{
  color:var(--surface);
  font-size:15px;
  font-weight:600;
  margin-bottom:8px;
}
.spec-note{
  margin:0;
  font-size:13px;
  line-height:1.8;
  color:rgba(255,255,255,.62);
}

/* ============ 信息卡片栅格 ============ */
.cards-matrix{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.info-card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px 26px;
  overflow:hidden;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.info-card::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--bamboo);
  transform:scaleY(0);
  transform-origin:top center;
  transition:transform var(--dur) var(--ease);
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.info-card:hover::before{transform:scaleY(1);}
.info-card.is-wide{grid-column:span 2;}
.card-index{
  display:block;
  font-size:13px;
  font-weight:700;
  color:var(--muted);
  letter-spacing:.1em;
  margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.card-title{font-size:17px;font-weight:600;color:var(--ink);margin-bottom:10px;}
.card-text{font-size:14px;line-height:1.85;color:var(--ink-2);margin-bottom:18px;}
.card-media{
  border-radius:var(--radius-sm);
  overflow:hidden;
  margin-bottom:20px;
  aspect-ratio:16/9;
}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:500;
  color:var(--bamboo);
}
.card-link:hover{gap:10px;color:var(--bamboo-deep);}

/* ============ 对照区 ============ */
.fit-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
}
.fit-col{padding:38px 34px;}
.fit-col.is-yes{background:var(--bamboo-tint);border-right:1px solid var(--line);}
.fit-col.is-no{background:var(--paper);}
.fit-col h3{font-size:18px;margin-bottom:8px;}
.fit-col .fit-lead{font-size:14px;color:var(--muted);margin-bottom:22px;}
.fit-list{list-style:none;padding:0;margin:0;}
.fit-list li{
  position:relative;
  padding-left:26px;
  margin-bottom:14px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-2);
}
.fit-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:10px;height:2px;
  border-radius:var(--pill);
}
.fit-col.is-yes .fit-list li::before{background:var(--bamboo);}
.fit-col.is-no .fit-list li::before{background:var(--muted);}

/* ============ 流程时间线 ============ */
.flow-grid{
  display:grid;
  grid-template-columns:1.25fr .75fr;
  gap:44px;
  align-items:start;
}
.timeline{list-style:none;padding:0;margin:0;}
.tl-item{
  display:flex;
  gap:20px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
}
.tl-item:first-child{padding-top:0;}
.tl-item:last-child{border-bottom:0;padding-bottom:0;}
.tl-num{
  flex:0 0 auto;
  font-size:14px;
  font-weight:700;
  color:var(--bamboo);
  letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
  padding-top:3px;
}
.tl-body h4{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.tl-body p{margin:0;font-size:14px;line-height:1.85;color:var(--ink-2);}
.flow-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);}
.flow-media img{width:100%;aspect-ratio:4/5;object-fit:cover;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  padding:24px 0;
  cursor:pointer;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  list-style:none;
  transition:color var(--dur) var(--ease);
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q::after{
  content:"＋";
  flex:0 0 auto;
  font-size:17px;
  font-weight:400;
  line-height:1.4;
  color:var(--muted);
  transition:color var(--dur) var(--ease);
}
.faq-item[open] .faq-q{color:var(--bamboo);}
.faq-item[open] .faq-q::after{content:"－";color:var(--bamboo);}
.faq-a{
  margin:0 0 24px;
  padding:18px 22px;
  border-left:3px solid var(--bamboo);
  background:var(--bamboo-tint);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  font-size:15px;
  line-height:1.85;
  color:var(--ink-2);
}

/* ============ 极简表单 ============ */
.mini-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:46px;
  box-shadow:var(--shadow-1);
}
.mini-form{display:grid;gap:16px;}
.field-label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
}
.field input,
.field textarea{
  width:100%;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--paper);
  color:var(--ink);
  font-family:inherit;
  font-size:15px;
  line-height:1.6;
  padding:12px 14px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.field input{height:46px;}
.field textarea{min-height:96px;resize:vertical;}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--bamboo);
  background:var(--surface);
  box-shadow:0 0 0 3px var(--bamboo-tint);
}
.field input.is-error,
.field textarea.is-error{border-color:var(--signal);}
.form-note{font-size:12px;color:var(--muted);margin:0;}
.form-msg{
  display:none;
  padding:12px 16px;
  border-radius:var(--radius-sm);
  background:var(--bamboo-tint);
  color:var(--bamboo-deep);
  font-size:14px;
}
.form-msg.is-visible{display:block;}
.mini-points{list-style:none;padding:0;margin:22px 0 0;}
.mini-points li{
  position:relative;
  padding-left:22px;
  margin-bottom:12px;
  font-size:14px;
  color:var(--ink-2);
}
.mini-points li::before{
  content:"";
  position:absolute;
  left:0;top:10px;
  width:6px;height:6px;
  border-radius:1px;
  background:var(--bamboo);
}

/* ============ 相关内容链接组 ============ */
.link-group{
  display:flex;
  flex-wrap:wrap;
  gap:14px 28px;
  padding:28px 0 0;
  border-top:1px solid var(--line);
}
.link-group a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:500;
  color:var(--ink-2);
}
.link-group a::before{
  content:"";
  width:6px;height:6px;
  border-radius:1px;
  background:var(--bamboo);
}
.link-group a:hover{color:var(--bamboo);}

/* ============ 深色 CTA 横条 ============ */
.cta-band{
  background:var(--ink);
  border-radius:var(--radius-lg);
  padding:clamp(32px,4vw,54px);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-band h2{color:var(--surface);font-size:clamp(20px,2.4vw,28px);margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin:0;max-width:52ch;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:76px 0 28px;
  margin-top:96px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--surface);
  font-weight:700;
  font-size:17px;
  margin-bottom:16px;
}
.footer-brand .brand-mark{color:#5FAF87;}
.footer-desc{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
  max-width:36ch;
  margin:0;
}
.site-footer h4{
  color:var(--surface);
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
}
.footer-links{list-style:none;padding:0;margin:0;}
.footer-links li{margin-bottom:12px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-links a:hover{color:#5FAF87;}
.footer-contact{list-style:none;padding:0;margin:0;font-size:14px;}
.footer-contact li{margin-bottom:12px;color:rgba(255,255,255,.72);}
.footer-contact .k{color:rgba(255,255,255,.45);}
.footer-contact a{color:#5FAF87;}
.footer-contact a:hover{color:var(--surface);}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:rgba(255,255,255,.62);
}
.footer-bottom a{color:rgba(255,255,255,.62);}
.footer-bottom a:hover{color:#5FAF87;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .spec-item{padding:30px 22px;}
  .flow-grid{gap:32px;}
}

@media (max-width:991.98px){
  .section{padding:72px 0;}
  .section-tight{padding:60px 0;}
  .section-head{margin-bottom:36px;}
  .spec-panel{grid-template-columns:1fr 1fr;}
  .spec-item:nth-child(2){border-right:0;}
  .spec-item:nth-child(-n+2){border-bottom:1px solid rgba(255,255,255,.12);}
  .cards-matrix{grid-template-columns:repeat(2,1fr);}
  .info-card.is-wide{grid-column:span 2;}
  .flow-grid{grid-template-columns:1fr;}
  .flow-media{order:-1;}
  .flow-media img{aspect-ratio:16/9;}
  .mini-wrap{grid-template-columns:1fr;gap:32px;padding:34px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .site-footer{padding:60px 0 26px;margin-top:72px;}
}

@media (max-width:767.98px){
  body{font-size:15.5px;}
  .container-xl{padding-inline:20px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .header-inner{min-height:60px;gap:14px;}
  .brand-text{font-size:15.5px;}
  .brand-mark{width:26px;height:26px;}
  .hero-band{min-height:400px;border-radius:var(--radius);}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .fit-grid{grid-template-columns:1fr;}
  .fit-col.is-yes{border-right:0;border-bottom:1px solid var(--line);}
  .fit-col{padding:30px 24px;}
  .cards-matrix{grid-template-columns:1fr;}
  .info-card.is-wide{grid-column:span 1;}
  .cta-band{padding:28px 24px;flex-direction:column;align-items:flex-start;}
  .cta-band .btn{width:100%;}
  .faq-q{font-size:15.5px;padding:20px 0;}
  .mini-wrap{padding:26px 22px;border-radius:var(--radius);}
  .footer-bottom{flex-direction:column;gap:8px;}
}

@media (max-width:575.98px){
  h1{font-size:clamp(24px,7vw,30px);}
  .hero-title{max-width:100%;}
  .spec-panel{grid-template-columns:1fr 1fr;}
  .spec-item{padding:22px 18px;}
  .spec-num{font-size:12px;}
  .spec-label{font-size:14px;}
  .spec-note{font-size:12.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:52px 0 24px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    transition-duration:.01ms !important;
    animation-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .info-card:hover,
  .btn:hover{transform:none;}
}