/* roulang page: index */
:root{
  --c-primary:#E2542A;
  --c-primary-dark:#C2401C;
  --c-primary-soft:#FDEDE6;
  --c-secondary:#123A32;
  --c-secondary-deep:#0B2620;
  --c-accent:#CDEB4A;
  --c-bg:#FAF6F1;
  --c-surface:#FFFFFF;
  --c-line:#E7E1D9;
  --c-text:#1B2624;
  --c-text-muted:#5F6E6A;
  --c-ok:#1E8A6B;
  --r-badge:4px;
  --r-btn:6px;
  --r-card:10px;
  --r-lg:16px;
  --sh-sm:0 1px 2px rgba(18,58,50,.06);
  --sh-md:0 10px 28px rgba(18,58,50,.08);
  --sh-lg:0 24px 60px rgba(18,58,50,.12);
  --ease:220ms ease-out;
  --bs-primary:#E2542A;
  --bs-primary-rgb:226,84,42;
  --bs-body-bg:#FAF6F1;
  --bs-body-color:#1B2624;
  --bs-border-color:#E7E1D9;
  --bs-link-color:#E2542A;
  --bs-link-hover-color:#C2401C;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-body-font-family:var(--bs-font-sans-serif);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--bs-font-sans-serif);
  font-size:17px;
  line-height:1.9;
  font-weight:400;
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--ease),opacity var(--ease)}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4,p,ul,ol{margin:0}
h1,h2,h3,h4{font-weight:700;line-height:1.26;letter-spacing:.01em}
ul,ol{padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:100%}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.bg-soft{background:#fff}
.num,.price,.countdown,.stat-num{font-variant-numeric:tabular-nums}

/* ---------- 顶部公告条 ---------- */
.topbar{background:var(--c-secondary);color:#fff;font-size:13px;line-height:36px;height:36px;overflow:hidden}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px}
.topbar-inner span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-link{color:#fff;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:1px}
.topbar-link:hover{color:var(--c-accent);border-color:var(--c-accent)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-sm)}
.site-header .navbar{min-height:72px;padding:0;transition:min-height var(--ease)}
.site-header.is-scrolled .navbar{min-height:60px}
.navbar .container{display:flex;align-items:center;flex-wrap:nowrap}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.brand-mark{
  position:relative;width:34px;height:34px;border-radius:8px;
  background:var(--c-primary);flex:0 0 34px;overflow:hidden;
  box-shadow:var(--sh-sm);
}
.brand-mark::before,.brand-mark::after{
  content:"";position:absolute;width:26px;height:2px;background:#fff;
  border-radius:2px;left:4px;
}
.brand-mark::before{top:11px;transform:rotate(-24deg)}
.brand-mark::after{top:20px;transform:rotate(-24deg);opacity:.72}
.brand-text{display:flex;align-items:baseline;gap:4px;line-height:1}
.brand-text strong{font-size:19px;font-weight:700;color:var(--c-secondary);letter-spacing:.02em}
.brand-text span{font-size:12px;font-weight:400;color:var(--c-text-muted);letter-spacing:.08em}
.navbar-toggler{
  border:0;padding:8px 4px;margin-left:auto;background:transparent;
  display:inline-flex;flex-direction:column;gap:5px;width:34px;
}
.navbar-toggler:focus{box-shadow:none}
.toggler-bar{display:block;width:22px;height:1.5px;background:var(--c-secondary);border-radius:2px;transition:transform var(--ease)}
.navbar-collapse{flex-grow:1;display:flex;align-items:center;justify-content:flex-end;gap:32px}
.nav-list{display:flex;align-items:center;gap:36px;margin:0}
.nav-list .nav-link{
  position:relative;padding:6px 0;font-size:15px;letter-spacing:.04em;
  color:var(--c-text);font-weight:400;
}
.nav-list .nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--c-primary);transition:width var(--ease);
}
.nav-list .nav-link:hover{color:var(--c-primary)}
.nav-list .nav-link:hover::after{width:100%}
.nav-list .nav-link.active{color:var(--c-secondary);font-weight:600}
.nav-list .nav-link.active::after{width:100%}
.nav-list .nav-link.active::before{
  content:"";position:absolute;left:-14px;top:50%;width:4px;height:4px;
  border-radius:50%;background:var(--c-primary);transform:translateY(-50%);
}
.nav-side{display:flex;align-items:center;gap:20px}
.nav-extra{font-size:14px;color:var(--c-text-muted);border-bottom:1px solid transparent;padding-bottom:2px}
.nav-extra:hover{color:var(--c-primary);border-color:var(--c-primary)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:16px;font-weight:600;line-height:1;
  padding:14px 28px;border:1px solid transparent;cursor:pointer;
  transition:background-color var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  text-decoration:none;
}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.btn-main{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-main:hover{background:var(--c-primary-dark);border-color:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-main:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--c-secondary);border-color:var(--c-secondary)}
.btn-ghost:hover{background:rgba(18,58,50,.08);color:var(--c-secondary)}
.btn-light-o{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-light-o:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-accent{background:var(--c-accent);color:var(--c-secondary-deep);border-color:var(--c-accent)}
.btn-accent:hover{background:#dcf766;color:var(--c-secondary-deep);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-sm{padding:11px 20px;font-size:15px}
.btn-block{width:100%}
.link-cta{
  font-size:15px;font-weight:600;color:var(--c-primary);
  border-bottom:1px solid var(--c-primary);padding-bottom:2px;display:inline-flex;align-items:center;gap:6px;
}
.link-cta:hover{border-bottom-width:2px;color:var(--c-primary-dark)}
.arrow{display:inline-block;transition:transform var(--ease)}
a:hover .arrow,.list-row:hover .arrow{transform:translateX(4px)}

/* ---------- 徽章 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:600;line-height:1.6;
  padding:4px 10px;border-radius:var(--r-badge);
}
.badge-accent{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-accent);color:var(--c-secondary-deep);
  font-size:13px;font-weight:700;line-height:1.6;padding:4px 10px;border-radius:var(--r-badge);
}
.badge-outline{
  display:inline-flex;align-items:center;gap:6px;border:1px solid var(--c-line);
  color:var(--c-text-muted);font-size:13px;padding:4px 10px;border-radius:var(--r-badge);
}

/* ---------- 区块标题 ---------- */
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:48px;
}
.sec-title{font-size:32px;color:var(--c-secondary);display:flex;align-items:center;gap:12px}
.sec-title::before{
  content:"";display:block;width:3px;height:26px;background:var(--c-primary);border-radius:2px;flex:0 0 3px;
}
.sec-sub{margin-top:12px;color:var(--c-text-muted);font-size:16px;line-height:1.8;max-width:720px}

/* ---------- Hero ---------- */
.hero{position:relative;padding:80px 0 88px;overflow:hidden;background:var(--c-bg)}
.hero::after{
  content:"";position:absolute;top:-140px;right:-120px;width:620px;height:620px;border-radius:50%;
  box-shadow:0 0 0 1px rgba(18,58,50,.06),0 0 0 80px rgba(18,58,50,.06),0 0 0 160px rgba(18,58,50,.06);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.hero-title{font-size:44px;color:var(--c-secondary);margin:20px 0 0;letter-spacing:.005em}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.9;color:var(--c-text-muted);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px;margin-top:32px}
.hero-stats{
  display:flex;flex-wrap:wrap;align-items:stretch;gap:0;margin-top:44px;
  border-top:1px solid var(--c-line);padding-top:24px;
}
.hero-stats .stat{padding:0 24px;border-left:1px solid var(--c-line)}
.hero-stats .stat:first-child{padding-left:0;border-left:0}
.stat-num{display:block;font-size:24px;font-weight:700;color:var(--c-primary);line-height:1.3}
.stat-label{font-size:13px;color:var(--c-text-muted);line-height:1.7}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-lg);
}
.hero-media figcaption{
  position:absolute;left:20px;bottom:20px;background:rgba(11,38,32,.86);color:#fff;
  font-size:13px;padding:8px 14px;border-radius:var(--r-badge);line-height:1.6;
}

/* ---------- 优惠阶梯 ---------- */
.ladder{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;align-items:end}
.ladder-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;display:flex;flex-direction:column;gap:14px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.ladder-item:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:#F3C4B3}
.ladder-item:nth-child(1){margin-top:66px}
.ladder-item:nth-child(2){margin-top:44px}
.ladder-item:nth-child(3){margin-top:22px}
.ladder-item:nth-child(4){margin-top:0}
.ladder-level{font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.06em}
.ladder-name{font-size:22px;color:var(--c-secondary)}
.ladder-audience{font-size:14px;color:var(--c-text-muted);line-height:1.75;min-height:48px}
.ladder-list{display:flex;flex-direction:column;gap:10px;border-top:1px solid var(--c-line);padding-top:14px}
.ladder-list li{
  position:relative;padding-left:18px;font-size:15px;color:var(--c-text);line-height:1.75;
}
.ladder-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);opacity:.55;
}
.ladder-price{font-size:30px;font-weight:700;color:var(--c-primary);line-height:1.2}
.ladder-price small{font-size:14px;font-weight:400;color:var(--c-text-muted);margin-left:6px}
.ladder-item .btn{margin-top:auto}

/* ---------- 对比表 ---------- */
.compare{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;
}
.compare-row{display:grid;grid-template-columns:1.15fr repeat(4,1fr);border-bottom:1px solid var(--c-line)}
.compare-row:last-child{border-bottom:0}
.cc{
  display:flex;align-items:center;gap:6px;padding:16px 18px;
  font-size:15px;line-height:1.7;color:var(--c-text);border-left:1px solid var(--c-line);
}
.cc:first-child{border-left:0}
.cc--label{font-weight:600;color:var(--c-secondary);background:#FCFAF7}
.cc--feature{background:var(--c-secondary);color:#fff;font-weight:600}
.cc--feature .ok{color:var(--c-accent)}
.compare-row--head .cc{flex-direction:column;align-items:flex-start;justify-content:center;gap:4px;padding:22px 18px;background:#FCFAF7}
.compare-row--head .cc--feature{background:var(--c-secondary);color:#fff;position:relative}
.cc-name{font-size:17px;font-weight:700;color:var(--c-secondary)}
.compare-row--head .cc--feature .cc-name{color:#fff}
.cc-price{font-size:24px;font-weight:700;color:var(--c-primary)}
.compare-row--head .cc--feature .cc-price{color:var(--c-accent)}
.cc-sub{font-size:13px;color:var(--c-text-muted)}
.compare-row--head .cc--feature .cc-sub{color:rgba(255,255,255,.72)}
.cc--head .badge-accent{position:absolute;top:-13px;right:14px}
.ok{color:var(--c-ok);font-weight:700}
.no{color:var(--c-text-muted)}
.compare-row--cta .cc{padding:20px 18px}
.compare-hint{display:none;margin-top:12px;font-size:13px;color:var(--c-text-muted);text-align:center}

/* ---------- 口碑 ---------- */
.voices{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--c-line)}
.voice{padding:28px 24px;border-left:1px solid var(--c-line)}
.voice:first-child{border-left:0;padding-left:0}
.voice p{font-size:15px;color:var(--c-text);line-height:1.85}
.voice footer{margin-top:14px;font-size:13px;color:var(--c-text-muted)}

/* ---------- 资讯列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:#F3C4B3}
.news-cover{display:block;overflow:hidden;aspect-ratio:16/10;background:var(--c-primary-soft)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-title{font-size:18px;color:var(--c-secondary);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-desc{font-size:15px;color:var(--c-text-muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-text-muted);
}
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;background:var(--c-surface);
}
.empty-state strong{display:block;font-size:16px;color:var(--c-secondary);font-weight:600}
.empty-state span{display:block;margin-top:8px;font-size:14px;color:var(--c-text-muted)}

/* ---------- 限时入口 ---------- */
.limited{
  position:relative;border-radius:var(--r-lg);overflow:hidden;color:#fff;
  background-image:linear-gradient(90deg,rgba(11,38,32,.94),rgba(11,38,32,.72)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.limited-title{font-size:28px;color:#fff}
.limited-text{margin-top:10px;font-size:15px;color:rgba(255,255,255,.78);line-height:1.8;max-width:460px}
.countdown{display:flex;gap:0;margin-top:24px;border:1px solid rgba(255,255,255,.24);border-radius:var(--r-btn);overflow:hidden;width:max-content}
.cd-item{padding:12px 18px;border-left:1px solid rgba(255,255,255,.24);text-align:center;min-width:76px}
.cd-item:first-child{border-left:0}
.cd-num{display:block;font-size:26px;font-weight:700;color:var(--c-accent);line-height:1.2}
.cd-label{font-size:12px;color:rgba(255,255,255,.7);letter-spacing:.08em}

/* ---------- 表单 ---------- */
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.point-list{display:flex;flex-direction:column;gap:0;margin-top:28px;border-top:1px solid var(--c-line)}
.point-list li{padding:18px 0;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--c-text);line-height:1.8}
.point-list strong{display:block;font-size:16px;color:var(--c-secondary);font-weight:600;margin-bottom:4px}
.contact-note{margin-top:24px;font-size:15px;color:var(--c-text-muted);line-height:1.9}
.contact-note b{color:var(--c-primary);font-size:20px;font-variant-numeric:tabular-nums}
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-md);
}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-secondary);margin-bottom:8px}
.form-control,.form-select{
  width:100%;height:48px;border:1px solid var(--c-line);border-radius:var(--r-btn);
  padding:0 14px;font-size:15px;color:var(--c-text);background:#fff;
  transition:border-color var(--ease),box-shadow var(--ease);
}
textarea.form-control{height:auto;min-height:110px;padding:12px 14px;line-height:1.8;resize:vertical}
.form-control:focus,.form-select:focus{
  outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(226,84,42,.12);
}
.form-control::placeholder{color:#A9B2AF}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.form-actions{display:flex;align-items:center;justify-content:flex-end;gap:16px;margin-top:8px}
.form-note{margin-top:14px;font-size:13px;color:var(--c-text-muted);line-height:1.7}
.form-success{
  display:none;margin-top:16px;background:var(--c-primary-soft);color:var(--c-primary-dark);
  border-radius:var(--r-btn);padding:12px 16px;font-size:14px;
}
.form-success.is-on{display:block}

/* ---------- FAQ ---------- */
.accordion{--bs-accordion-border-color:var(--c-line);--bs-accordion-border-width:0 0 1px 0;--bs-accordion-border-radius:0;--bs-accordion-inner-border-radius:0;--bs-accordion-bg:transparent;--bs-accordion-btn-padding-x:0;--bs-accordion-btn-padding-y:18px;--bs-accordion-btn-color:var(--c-secondary);--bs-accordion-btn-bg:transparent;--bs-accordion-active-color:var(--c-primary);--bs-accordion-active-bg:transparent;--bs-accordion-body-padding-x:0;--bs-accordion-body-padding-y:0;--bs-accordion-btn-focus-box-shadow:none;border-top:1px solid var(--c-line)}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--c-secondary);line-height:1.7;
  padding:18px 40px 18px 0;background:transparent;
}
.accordion-button:not(.collapsed){color:var(--c-primary);box-shadow:none}
.accordion-button::after{
  background-image:linear-gradient(var(--c-primary),var(--c-primary)),linear-gradient(var(--c-primary),var(--c-primary));
  background-size:100% 1.5px,1.5px 100%;
  background-position:center,center;
  background-repeat:no-repeat;
  width:14px;height:14px;
  transition:transform var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-body{padding:0 40px 20px 0;font-size:16px;line-height:1.85;color:var(--c-text-muted)}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line)}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--c-line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--c-text-muted);line-height:1.9;max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--c-secondary);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col li{font-size:14px;color:var(--c-text-muted);line-height:1.7}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--c-text-muted);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity 480ms ease-out,transform 480ms ease-out}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-title{font-size:38px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:991.98px){
  .section{padding:64px 0}
  .section--tight{padding:56px 0}
  .topbar{display:none}
  .navbar-collapse{
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-top:1px solid var(--c-line);
    margin:0 -24px;padding:8px 24px 20px;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list .nav-item{border-bottom:1px solid var(--c-line)}
  .nav-list .nav-link{font-size:18px;padding:16px 0;display:block}
  .nav-list .nav-link::after{display:none}
  .nav-list .nav-link.active::before{left:0;top:50%;transform:translate(-14px,-50%)}
  .nav-side{flex-direction:column;align-items:stretch;gap:14px;margin-top:20px}
  .nav-side .btn{width:100%}
  .hero{padding:56px 0 64px}
  .hero::after{width:420px;height:420px;top:-80px;right:-120px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-title{font-size:34px}
  .hero-media{order:2}
  .hero-stats{margin-top:32px}
  .ladder{grid-template-columns:1fr 1fr;align-items:stretch}
  .ladder-item:nth-child(n){margin-top:0}
  .compare{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .compare-inner{min-width:760px}
  .compare-hint{display:block}
  .voices{grid-template-columns:1fr 1fr}
  .voice{border-top:1px solid var(--c-line);padding:24px}
  .voice:nth-child(odd){border-left:0;padding-left:0}
  .voice:nth-child(-n+2){border-top:0}
  .news-grid{grid-template-columns:1fr 1fr}
  .limited{flex-direction:column;align-items:flex-start;padding:40px}
  .consult-grid{grid-template-columns:1fr;gap:40px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .container{padding-left:16px;padding-right:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .sec-title{font-size:24px}
  .hero-title{font-size:30px}
  .hero-sub{font-size:16px}
  .hero-actions{gap:16px}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:16px 0}
  .hero-stats .stat{padding:0 16px}
  .hero-stats .stat:nth-child(3){padding-left:0;border-left:0}
  .ladder{grid-template-columns:1fr;gap:16px}
  .ladder-item{display:grid;grid-template-columns:56px 1fr;gap:0 12px;align-items:start;padding:20px}
  .ladder-item::before{
    content:attr(data-step);grid-row:span 6;font-size:40px;font-weight:700;color:rgba(226,84,42,.18);line-height:1;
  }
  .news-grid{grid-template-columns:1fr}
  .voices{grid-template-columns:1fr}
  .voice{border-left:0;padding:20px 0}
  .voice:nth-child(-n+2){border-top:1px solid var(--c-line)}
  .voice:first-child{border-top:0}
  .limited{padding:32px 24px}
  .limited-title{font-size:22px}
  .countdown{width:100%}
  .cd-item{flex:1;min-width:0;padding:10px 6px}
  .cd-num{font-size:22px}
  .form-card{padding:24px 20px}
  .form-row{grid-template-columns:1fr;gap:0}
  .form-actions{justify-content:stretch}
  .form-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .accordion-button{font-size:16px}
  .compare-inner{min-width:640px}
}

/* roulang page: article */
:root{
  --c-primary:#E2542A;
  --c-primary-dark:#C2401C;
  --c-primary-soft:#FDEDE6;
  --c-secondary:#123A32;
  --c-secondary-deep:#0B2620;
  --c-accent:#CDEB4A;
  --c-bg:#FAF6F1;
  --c-surface:#FFFFFF;
  --c-line:#E7E1D9;
  --c-text:#1B2624;
  --c-text-muted:#5F6E6A;
  --c-ok:#1E8A6B;
  --r-badge:4px;
  --r-btn:6px;
  --r-card:10px;
  --r-block:16px;
  --sh-sm:0 1px 2px rgba(18,58,50,.06);
  --sh-md:0 10px 28px rgba(18,58,50,.08);
  --sh-lg:0 24px 60px rgba(18,58,50,.12);
  --ease:220ms ease-out;
  --bs-body-bg:#FAF6F1;
  --bs-body-color:#1B2624;
  --bs-border-color:#E7E1D9;
  --bs-primary:#E2542A;
  --bs-link-color:#E2542A;
  --bs-link-hover-color:#C2401C;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*{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,sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  font-size:17px;
  line-height:1.9;
  font-weight:400;
  text-align:left;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),border-color var(--ease)}
a:hover{color:var(--c-primary-dark)}
h1,h2,h3,h4{color:var(--c-secondary);line-height:1.26;margin:0;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0}
button{font-family:inherit}
.container{max-width:1240px;padding-left:24px;padding-right:24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部公告条 ---------- */
.notice-bar{background:var(--c-secondary-deep);color:rgba(255,255,255,.86);font-size:13px;line-height:1.7}
.notice-bar .container{height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.notice-bar strong{color:#fff;font-weight:600}
.notice-bar a{color:var(--c-accent);border-bottom:1px solid rgba(205,235,74,.5);padding-bottom:1px}
.notice-bar a:hover{color:#fff;border-color:#fff}

/* ---------- 导航 ---------- */
.site-header{background:#fff;border-bottom:1px solid var(--c-line);position:sticky;top:0;z-index:1030;transition:box-shadow var(--ease)}
.site-header.scrolled{box-shadow:var(--sh-sm)}
.site-header .navbar{min-height:72px;padding:0;align-items:center;transition:min-height var(--ease)}
.site-header.scrolled .navbar{min-height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.brand-mark{position:relative;width:32px;height:32px;border-radius:6px;background:var(--c-primary);overflow:hidden;flex:0 0 auto}
.brand-mark::before,.brand-mark::after{content:"";position:absolute;top:-25%;left:38%;width:2px;height:150%;background:rgba(255,255,255,.9);transform:rotate(24deg)}
.brand-mark::after{left:62%;opacity:.55}
.brand-text{display:flex;align-items:baseline;gap:6px;line-height:1}
.brand-text strong{font-size:20px;font-weight:700;color:var(--c-text);letter-spacing:.02em}
.brand-text span{font-size:12px;font-weight:400;color:var(--c-text-muted);letter-spacing:.12em}
.navbar-toggler{border:0;padding:8px 4px;display:flex;flex-direction:column;gap:5px;background:transparent}
.navbar-toggler:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:3px}
.toggler-bar{display:block;width:22px;height:1.5px;background:var(--c-secondary);transition:transform var(--ease)}
.nav-list{gap:30px;align-items:center}
.nav-list .nav-link{position:relative;padding:6px 0;font-size:15px;font-weight:400;color:var(--c-text);letter-spacing:.04em;transition:color var(--ease)}
.nav-list .nav-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--c-primary);transition:width var(--ease)}
.nav-list .nav-link:hover{color:var(--c-primary)}
.nav-list .nav-link:hover::after{width:100%}
.nav-list .nav-link.active{color:var(--c-primary);font-weight:600}
.nav-list .nav-link.active::after{width:100%}
.nav-list .nav-link.active::before{content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);width:4px;height:4px;border-radius:50%;background:var(--c-primary)}
.nav-side{display:flex;align-items:center;gap:22px;margin-left:34px}
.nav-extra{font-size:14px;color:var(--c-text-muted);border-bottom:1px solid transparent}
.nav-extra:hover{color:var(--c-primary);border-color:var(--c-primary)}

/* ---------- 按钮 ---------- */
.btn{border-radius:var(--r-btn);border:1px solid transparent;font-size:16px;font-weight:600;height:48px;padding:0 28px;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:all var(--ease);line-height:1}
.btn-main{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.btn-main:hover{background:var(--c-primary-dark);border-color:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-main:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--c-secondary);color:var(--c-secondary)}
.btn-ghost:hover{background:rgba(18,58,50,.08);color:var(--c-secondary)}
.btn-accent{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-secondary-deep)}
.btn-accent:hover{background:#dbf463;border-color:#dbf463;color:var(--c-secondary-deep);transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.link-cta{color:var(--c-primary);font-weight:600;font-size:15px;border-bottom:1px solid var(--c-primary);padding-bottom:2px}
.link-cta:hover{color:var(--c-primary-dark);border-bottom-width:2px}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13px;color:var(--c-text-muted);line-height:1.7;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--c-text-muted)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:#C9C1B6}
.crumb .now{color:var(--c-text)}

/* ---------- 文章头部 ---------- */
.article-head{padding:32px 0 40px;border-bottom:1px solid var(--c-line)}
.article-head h1{font-size:44px;font-weight:700;letter-spacing:-.01em;margin:18px 0 0;max-width:880px}
.badge-cat{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.04em;padding:4px 10px;border-radius:var(--r-badge);background:var(--c-primary-soft);color:var(--c-primary-dark)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;font-size:14px;color:var(--c-text-muted)}
.article-meta .dot{width:1px;height:12px;background:var(--c-line)}
.article-lead{margin-top:22px;font-size:17px;line-height:1.9;color:var(--c-text-muted);max-width:820px}

/* ---------- 文章布局 ---------- */
.article-wrap{padding:48px 0 0}
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--c-text)}
.article-body p{margin:0 0 1.1em}
.article-body h2{position:relative;font-size:24px;font-weight:700;margin:2em 0 .8em;padding-left:14px;color:var(--c-secondary)}
.article-body h2::before{content:"";position:absolute;left:0;top:.24em;width:3px;height:.9em;border-radius:2px;background:var(--c-primary)}
.article-body h3{font-size:19px;font-weight:600;margin:1.4em 0;color:var(--c-secondary)}
.article-body h4{font-size:17px;font-weight:600;margin:1.2em 0;color:var(--c-secondary)}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.1em}
.article-body li{margin-bottom:.5em;line-height:1.85}
.article-body li::marker{color:var(--c-primary)}
.article-body blockquote{margin:1.4em 0;padding:20px 24px;background:rgba(226,84,42,.04);border-left:3px solid var(--c-primary);border-radius:0 var(--r-card) var(--r-card) 0;color:var(--c-text-muted)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:8px;margin:1.4em 0 .6em}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--c-primary-dark)}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;line-height:1.7}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left}
.article-body th{background:#FBF7F2;font-weight:600;color:var(--c-secondary)}
.article-body pre{background:#F5F1EB;border-radius:6px;padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;margin:1.4em 0}
.article-body code{background:#F5F1EB;border-radius:4px;padding:2px 6px;font-size:.92em}
.article-body pre code{background:none;padding:0}
.article-body figure{margin:1.4em 0}
.article-body figcaption{font-size:13px;color:var(--c-text-muted);text-align:center;margin-top:8px;line-height:1.7}
.empty-note{border:1px dashed var(--c-line);border-radius:var(--r-card);padding:48px 32px;text-align:center;background:#fff}
.empty-note h2{font-size:22px;margin-bottom:12px}
.empty-note p{color:var(--c-text-muted);font-size:15px;margin-bottom:20px}

/* ---------- 侧栏 ---------- */
.side-col{position:sticky;top:96px;align-self:flex-start}
.side-box{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;margin-bottom:20px}
.side-box h3{font-size:16px;font-weight:600;margin-bottom:14px;color:var(--c-secondary)}
.toc-list{list-style:none;font-size:14px;line-height:1.75}
.toc-list li{margin-bottom:10px}
.toc-list a{color:var(--c-text-muted);display:block;border-left:1px solid var(--c-line);padding-left:12px}
.toc-list a:hover{color:var(--c-primary);border-color:var(--c-primary)}
.toc-list .toc-3 a{padding-left:24px;font-size:13px}
.side-list{list-style:none;font-size:15px;line-height:1.75}
.side-list li{padding:14px 0;border-bottom:1px solid var(--c-line)}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list a{color:var(--c-text);display:flex;justify-content:space-between;gap:12px}
.side-list a:hover{color:var(--c-primary)}
.side-list .arrow{color:var(--c-primary);transition:transform var(--ease)}
.side-list a:hover .arrow{transform:translateX(4px)}
.side-note{font-size:13px;color:var(--c-text-muted);line-height:1.8}

/* ---------- 文末导航 ---------- */
.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin:48px 0 0}
.article-nav a{display:block;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px 24px;transition:all var(--ease)}
.article-nav a:hover{border-color:var(--c-primary);box-shadow:var(--sh-sm);transform:translateY(-2px)}
.article-nav .lab{font-size:13px;color:var(--c-text-muted);display:block;margin-bottom:6px}
.article-nav .ttl{font-size:16px;font-weight:600;color:var(--c-text);line-height:1.6}
.article-nav .to-right{text-align:right}
.back-row{margin-top:24px;text-align:center}

/* ---------- 相关推荐 ---------- */
.section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{position:relative;font-size:32px;font-weight:700;padding-left:14px}
.section-head h2::before{content:"";position:absolute;left:0;top:.28em;width:3px;height:.82em;border-radius:2px;background:var(--c-primary)}
.section-head p{color:var(--c-text-muted);font-size:15px;margin-top:8px}
.post-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;height:100%;display:flex;flex-direction:column;transition:all var(--ease)}
.post-card:hover{border-color:rgba(226,84,42,.45);box-shadow:var(--sh-md);transform:translateY(-3px)}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:#F1ECE4}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body h3{font-size:18px;font-weight:600;line-height:1.5;color:var(--c-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body p{font-size:14.5px;line-height:1.8;color:var(--c-text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--c-text-muted);margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line)}
.post-meta .arrow{color:var(--c-primary);transition:transform var(--ease)}
.post-card:hover .post-meta .arrow{transform:translateX(4px)}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--c-secondary);border-radius:var(--r-block);padding:48px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:36px}
.cta-band h2{color:#fff;font-size:26px;font-weight:700;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.74);font-size:15px;line-height:1.85;max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg);border-top:1px solid var(--c-line);margin-top:96px;padding-top:64px}
.footer-brand{margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.9;color:var(--c-text-muted);max-width:340px}
.footer-title{font-size:15px;font-weight:600;color:var(--c-secondary);margin-bottom:18px}
.footer-links{list-style:none;font-size:14px;line-height:1.8}
.footer-links li{margin-bottom:12px;color:var(--c-text-muted)}
.footer-links a{color:var(--c-text-muted)}
.footer-links a:hover{color:var(--c-primary)}
.footer-bottom{margin-top:48px;padding:20px 0;border-top:1px solid var(--c-line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--c-text-muted)}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-head h1{font-size:38px}
}
@media (max-width:991.98px){
  .container{padding-left:20px;padding-right:20px}
  .section{padding:64px 0}
  .site-header .navbar{min-height:64px}
  .site-header.scrolled .navbar{min-height:64px}
  .navbar-collapse{position:fixed;left:0;right:0;top:64px;bottom:0;background:#fff;padding:10px 20px 40px;overflow-y:auto;z-index:1035;border-top:1px solid var(--c-line)}
  .nav-list{gap:0;align-items:stretch;margin-top:6px}
  .nav-list .nav-item{border-bottom:1px solid var(--c-line)}
  .nav-list .nav-link{font-size:18px;padding:16px 0 16px 16px;letter-spacing:.02em}
  .nav-list .nav-link::after{display:none}
  .nav-list .nav-link.active::before{left:0;width:4px;height:4px}
  .nav-side{margin:24px 0 0;flex-direction:column;align-items:stretch;gap:14px}
  .nav-side .btn{width:100%}
  .nav-extra{text-align:center;padding:6px 0}
  .article-head{padding:24px 0 32px}
  .article-head h1{font-size:32px}
  .article-wrap{padding-top:36px}
  .side-col{position:static;margin-top:40px}
  .section-head h2{font-size:26px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .site-footer{padding-top:48px;margin-top:64px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .notice-bar{display:none}
  .navbar-collapse{top:64px}
  .article-head h1{font-size:28px}
  .article-body{font-size:16px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .article-nav{grid-template-columns:1fr;gap:16px}
  .article-nav .to-right{text-align:left}
  .section{padding:48px 0}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .container{padding-left:16px;padding-right:16px}
  .article-head h1{font-size:26px}
  .brand-text strong{font-size:18px}
  .side-box{padding:20px}
  .empty-note{padding:32px 20px}
}

/* roulang page: category1 */
:root{
  --c-primary:#E2542A;
  --c-primary-dark:#C2401C;
  --c-primary-soft:#FDEDE6;
  --c-secondary:#123A32;
  --c-secondary-deep:#0B2620;
  --c-accent:#CDEB4A;
  --c-bg:#FAF6F1;
  --c-surface:#FFFFFF;
  --c-line:#E7E1D9;
  --c-text:#1B2624;
  --c-text-muted:#5F6E6A;
  --c-ok:#1E8A6B;
  --r-badge:4px;
  --r-btn:6px;
  --r-card:10px;
  --r-lg:16px;
  --sh-sm:0 1px 2px rgba(18,58,50,.06);
  --sh-md:0 10px 28px rgba(18,58,50,.08);
  --sh-lg:0 24px 60px rgba(18,58,50,.12);
  --t:220ms ease-out;
  --bs-body-font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --bs-body-color:#1B2624;
  --bs-body-bg:#FAF6F1;
  --bs-border-color:#E7E1D9;
  --bs-link-color:#E2542A;
  --bs-link-hover-color:#C2401C;
  --bs-primary:#E2542A;
  --bs-primary-rgb:226,84,42;
  --bs-border-radius:8px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  text-align:left;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{line-height:1.26;font-weight:700;margin:0;color:var(--c-text);}
h1{font-size:44px;}
h2{font-size:32px;}
h3{font-size:22px;}
h4{font-size:18px;font-weight:600;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--c-primary-dark);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
.sec{padding:96px 0;}
.sec-tight{padding:64px 0;}
.sec-head{margin-bottom:40px;}
.sec-title{position:relative;padding-left:16px;font-size:32px;}
.sec-title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:26px;background:var(--c-primary);border-radius:2px;}
.sec-desc{margin-top:12px;font-size:16px;line-height:1.8;color:var(--c-text-muted);max-width:760px;}
.num{font-variant-numeric:tabular-nums;}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:1030;background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.site-header .navbar{position:relative;min-height:72px;padding:0;flex-wrap:nowrap;transition:min-height var(--t);}
.site-header.scrolled .navbar{min-height:60px;}
.brand{display:flex;align-items:center;gap:12px;padding:0;margin:0;text-decoration:none;}
.brand-mark{position:relative;width:34px;height:34px;flex:0 0 34px;border-radius:8px;background:var(--c-primary);overflow:hidden;}
.brand-mark::before,
.brand-mark::after{content:"";position:absolute;top:-20%;width:2px;height:140%;background:rgba(255,255,255,.88);border-radius:2px;}
.brand-mark::before{left:12px;transform:rotate(21deg);}
.brand-mark::after{left:21px;transform:rotate(21deg);}
.brand-text{display:flex;align-items:baseline;gap:4px;font-size:19px;line-height:1;color:var(--c-text);letter-spacing:.02em;}
.brand-text strong{font-weight:700;}
.brand-text span{font-size:13px;font-weight:400;color:var(--c-text-muted);}
.site-header.scrolled .brand-text{font-size:18px;}
.nav-list{gap:32px;align-items:center;}
.nav-list .nav-item{list-style:none;}
.nav-link{position:relative;padding:8px 2px;font-size:15px;letter-spacing:.04em;color:var(--c-text);transition:color var(--t);}
.nav-link::after{content:"";position:absolute;left:0;bottom:2px;width:0;height:1px;background:var(--c-primary);transition:width var(--t);}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{width:100%;}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{width:100%;}
.nav-link.active::before{content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);width:4px;height:4px;border-radius:50%;background:var(--c-primary);}
.nav-side{display:flex;align-items:center;gap:24px;margin-left:48px;}
.nav-extra{font-size:15px;letter-spacing:.04em;color:var(--c-text-muted);border-bottom:1px solid transparent;padding-bottom:2px;}
.nav-extra:hover{color:var(--c-primary);border-bottom-color:var(--c-primary);}
.navbar-toggler{border:0;padding:8px 6px;border-radius:6px;box-shadow:none;background:transparent;}
.navbar-toggler:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:2px;}
.toggler-bar{display:block;width:22px;height:1.6px;background:var(--c-text);margin:5px 0;border-radius:2px;transition:var(--t);}

/* 按钮 */
.btn{border-radius:var(--r-btn);font-size:16px;font-weight:600;letter-spacing:.02em;transition:all var(--t);border-width:1px;}
.btn-main{background:var(--c-primary);border-color:var(--c-primary);color:#fff;padding:14px 28px;}
.btn-main:hover,.btn-main:focus{background:var(--c-primary-dark);border-color:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-main:active{background:var(--c-primary-dark);border-color:var(--c-primary-dark);color:#fff;transform:translateY(0);box-shadow:none;}
.btn-main.btn-sm{padding:10px 20px;font-size:15px;}
.btn-ghost{background:transparent;border:1px solid var(--c-secondary);color:var(--c-secondary);padding:14px 28px;}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(18,58,50,.08);color:var(--c-secondary);border-color:var(--c-secondary);}
.link-cta{font-size:16px;font-weight:600;color:var(--c-primary);border-bottom:1px solid var(--c-primary);padding-bottom:2px;}
.link-cta:hover{color:var(--c-primary-dark);border-bottom-width:2px;border-bottom-color:var(--c-primary-dark);}

/* 徽章 */
.badge-tag{display:inline-block;background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:600;line-height:1.7;padding:3px 10px;border-radius:var(--r-badge);letter-spacing:.04em;}
.badge-accent{display:inline-block;background:var(--c-accent);color:var(--c-secondary-deep);font-size:13px;font-weight:600;line-height:1.7;padding:3px 10px;border-radius:var(--r-badge);}

/* 面包屑 */
.crumb{display:flex;align-items:center;font-size:13px;color:var(--c-text-muted);margin-bottom:16px;}
.crumb a{color:var(--c-text-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb-sep{display:inline-block;width:1px;height:12px;background:var(--c-line);margin:0 12px;}
.crumb-cur{color:var(--c-text);}

/* 分类页头 */
.cat-hero{padding:64px 0 72px;}
.cat-hero h1{margin-bottom:16px;}
.cat-sub{font-size:18px;line-height:1.85;color:var(--c-text-muted);margin-bottom:24px;}
.cat-lead{font-size:17px;line-height:1.9;color:var(--c-text-muted);}
.cat-hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:24px;margin-top:32px;}
.hero-visual{border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;background:var(--c-surface);box-shadow:var(--sh-lg);}
.hero-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-visual figcaption{padding:14px 18px;font-size:13px;line-height:1.7;color:var(--c-text-muted);border-top:1px solid var(--c-line);background:var(--c-surface);}

/* 编号条目清单 */
.num-list{list-style:none;border-top:1px solid var(--c-line);}
.num-list li{border-bottom:1px solid var(--c-line);}
.num-row{display:flex;align-items:flex-start;gap:24px;padding:20px 0;color:inherit;text-decoration:none;transition:padding-left var(--t),background var(--t);}
.num-row:hover{color:inherit;padding-left:12px;background:rgba(226,84,42,.03);}
.num-index{flex:0 0 56px;font-size:24px;font-weight:700;line-height:1.5;color:var(--c-primary);font-variant-numeric:tabular-nums;}
.num-body{flex:1 1 auto;min-width:0;}
.num-body h3{font-size:18px;font-weight:600;margin-bottom:4px;}
.num-body p{font-size:14px;line-height:1.75;color:var(--c-text-muted);margin:0;}
.num-arrow{flex:0 0 auto;font-size:20px;line-height:1.6;color:var(--c-primary);transition:transform var(--t);}
.num-row:hover .num-arrow{transform:translateX(4px);}

/* 数字规格条 */
.spec-bar{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);background:var(--c-surface);}
.spec-item{padding:32px 24px;border-right:1px solid var(--c-line);}
.spec-item:last-child{border-right:0;}
.spec-num{display:block;font-size:28px;font-weight:700;line-height:1.3;color:var(--c-secondary);font-variant-numeric:tabular-nums;}
.spec-label{display:block;margin-top:4px;font-size:13px;letter-spacing:.06em;color:var(--c-primary);font-weight:600;}
.spec-desc{display:block;margin-top:10px;font-size:14px;line-height:1.75;color:var(--c-text-muted);}

/* 窄 CTA 条 */
.cta-strip{display:flex;align-items:center;justify-content:space-between;gap:32px;background:var(--c-primary-soft);border-radius:var(--r-lg);padding:32px 40px;}
.cta-strip h3{font-size:22px;margin-bottom:6px;}
.cta-strip p{font-size:15px;line-height:1.7;color:var(--c-text-muted);margin:0;}

/* FAQ */
.faq-acc{border-top:1px solid var(--c-line);}
.faq-acc .accordion-item{border:0;border-bottom:1px solid var(--c-line);background:transparent;}
.faq-acc .accordion-button{min-height:60px;padding:18px 60px 18px 0;background:transparent;font-size:17px;font-weight:600;color:var(--c-text);box-shadow:none;border-radius:0;}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:-2px;}
.faq-acc .accordion-button::before,
.faq-acc .accordion-button::after{content:"";position:absolute;right:22px;top:50%;width:14px;height:2px;border-radius:2px;background:var(--c-primary);background-image:none !important;}
.faq-acc .accordion-button.collapsed::before{transform:translateY(-50%) rotate(0deg);}
.faq-acc .accordion-button.collapsed::after{transform:translateY(-50%) rotate(90deg);}
.faq-acc .accordion-button:not(.collapsed)::before{transform:translateY(-50%) rotate(45deg);}
.faq-acc .accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(135deg);}
.faq-acc .accordion-body{padding:0 60px 20px 0;font-size:16px;line-height:1.85;color:var(--c-text-muted);}

/* 页脚 */
.site-footer{background:var(--c-surface);border-top:1px solid var(--c-line);padding-top:64px;}
.footer-grid{gap:32px 0;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-text{font-size:18px;}
.footer-note{font-size:14px;line-height:1.8;color:var(--c-text-muted);max-width:320px;}
.footer-title{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--c-text-muted);}
.footer-links a:hover{color:var(--c-primary);}
.footer-info{list-style:none;display:flex;flex-direction:column;gap:12px;font-size:14px;line-height:1.7;color:var(--c-text-muted);}
.footer-info strong{display:block;font-size:13px;font-weight:600;color:var(--c-text);letter-spacing:.04em;}
.footer-bottom{margin-top:56px;border-top:1px solid var(--c-line);padding:20px 0;font-size:13px;color:var(--c-text-muted);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;}

/* 响应式 */
@media (max-width:1199.98px){
  .nav-list{gap:24px;}
  .nav-side{margin-left:24px;gap:16px;}
}
@media (max-width:991.98px){
  body{font-size:16px;}
  .container{padding-left:20px;padding-right:20px;}
  .sec{padding:64px 0;}
  .sec-tight{padding:48px 0;}
  h1{font-size:30px;}
  h2,.sec-title{font-size:24px;}
  h3{font-size:19px;}
  .cat-hero{padding:32px 0 48px;}
  .cat-sub{font-size:16px;}
  .spec-bar{grid-template-columns:repeat(2,1fr);}
  .spec-item{border-bottom:1px solid var(--c-line);}
  .spec-item:nth-child(2n){border-right:0;}
  .spec-item:nth-last-child(-n+2){border-bottom:0;}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:28px 24px;}
  .navbar-collapse{position:absolute;top:100%;left:0;width:100%;background:var(--c-surface);border-bottom:1px solid var(--c-line);box-shadow:var(--sh-md);padding:8px 20px 24px;max-height:calc(100vh - 72px);overflow-y:auto;}
  .nav-list{gap:0;align-items:stretch;margin:0 0 16px;}
  .nav-link{display:block;font-size:18px;padding:18px 12px;border-bottom:1px solid var(--c-line);}
  .nav-link::after{display:none;}
  .nav-link.active::before{left:0;}
  .nav-link.active{padding-left:12px;}
  .nav-side{flex-direction:column;align-items:stretch;gap:16px;margin:0;}
  .nav-extra{font-size:16px;text-align:center;border-bottom:1px solid var(--c-line);padding:0 0 14px;}
  .nav-side .btn-main{width:100%;text-align:center;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .brand-text{font-size:17px;}
  .sec{padding:48px 0;}
  .num-row{gap:16px;}
  .num-index{flex:0 0 40px;font-size:20px;}
  .spec-item{padding:24px 16px;}
  .spec-num{font-size:23px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#E2542A;
  --c-primary-dark:#C2401C;
  --c-primary-soft:#FDEDE6;
  --c-secondary:#123A32;
  --c-secondary-deep:#0B2620;
  --c-accent:#CDEB4A;
  --c-ok:#1E8A6B;
  --c-bg:#FAF6F1;
  --c-surface:#FFFFFF;
  --c-line:#E7E1D9;
  --c-text:#1B2624;
  --c-text-muted:#5F6E6A;
  --r-sm:4px;
  --r-md:6px;
  --r-lg:10px;
  --r-xl:16px;
  --sh-sm:0 1px 2px rgba(18,58,50,.06);
  --sh-md:0 10px 28px rgba(18,58,50,.08);
  --sh-lg:0 24px 60px rgba(18,58,50,.12);
  --container:1240px;
  --ease:220ms ease-out;
  --bs-body-bg:#FAF6F1;
  --bs-body-color:#1B2624;
  --bs-primary:#E2542A;
  --bs-link-color:#E2542A;
  --bs-link-hover-color:#C2401C;
  --bs-border-color:#E7E1D9;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:17px;
  line-height:1.9;
  font-weight:400;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-align:left;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),border-color var(--ease)}
a:hover{color:var(--c-primary-dark)}
h1,h2,h3,h4{line-height:1.28;font-weight:700;color:var(--c-secondary);margin:0}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 顶部公告条 ---------- */
.topbar{background:var(--c-secondary);color:#fff;font-size:13px;line-height:1.7}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px;padding-top:4px;padding-bottom:4px}
.topbar p{margin:0;color:rgba(255,255,255,.86)}
.topbar a{color:var(--c-accent);border-bottom:1px solid rgba(205,235,74,.45);padding-bottom:1px}
.topbar a:hover{color:#fff;border-bottom-color:#fff}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-sm)}
.site-header .navbar{
  min-height:72px;
  padding:0;
  display:flex;
  align-items:center;
  flex-wrap:nowrap;
  transition:min-height var(--ease);
}
.site-header.is-scrolled .navbar{min-height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;padding:0;margin-right:auto;color:var(--c-secondary)}
.brand:hover{color:var(--c-secondary)}
.brand-mark{
  width:26px;height:26px;border-radius:7px;background:var(--c-primary);
  position:relative;flex:none;display:block;
}
.brand-mark::before,.brand-mark::after{
  content:"";position:absolute;left:6px;right:6px;height:2px;border-radius:2px;
  background:rgba(255,255,255,.92);transform:rotate(-28deg);
}
.brand-mark::before{top:9px}
.brand-mark::after{top:16px;left:9px;right:9px;opacity:.62}
.brand-text{display:inline-flex;align-items:baseline;gap:2px;letter-spacing:.02em}
.brand-text strong{font-size:20px;font-weight:700;color:var(--c-secondary)}
.brand-text span{font-size:12px;font-weight:400;color:var(--c-text-muted)}
.navbar-toggler{
  border:0;background:transparent;padding:10px 6px;margin-left:12px;
  display:none;flex-direction:column;justify-content:center;gap:5px;box-shadow:none;
}
.navbar-toggler:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:2px}
.toggler-bar{display:block;width:22px;height:2px;background:var(--c-secondary);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.navbar-collapse{display:flex;align-items:center;justify-content:flex-end;gap:32px;flex-grow:1}
.nav-list{display:flex;align-items:center;gap:36px;list-style:none;margin:0;padding:0}
.nav-item{list-style:none}
.nav-link{
  position:relative;display:inline-block;padding:8px 0;
  font-size:15px;letter-spacing:.04em;font-weight:400;color:var(--c-text);
  background:transparent;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--c-primary);transition:width var(--ease);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{width:100%}
.nav-link.active::before{
  content:"";position:absolute;left:-12px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--c-primary);
}
.nav-side{display:flex;align-items:center;gap:22px;margin-left:36px}
.nav-extra{font-size:15px;color:var(--c-text-muted);letter-spacing:.03em}
.nav-extra:hover{color:var(--c-primary)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-md);border:1px solid transparent;
  font-family:inherit;font-size:16px;font-weight:600;line-height:1.2;
  padding:14px 28px;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-main{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.btn-main:hover{background:var(--c-primary-dark);border-color:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md)}
.btn-main:active{transform:none;box-shadow:none}
.btn-sm{padding:10px 18px;font-size:15px}
.btn-ghost{background:transparent;border-color:var(--c-secondary);color:var(--c-secondary)}
.btn-ghost:hover{background:rgba(18,58,50,.08);color:var(--c-secondary)}
.btn-accent{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-secondary-deep)}
.btn-accent:hover{background:#dffc72;border-color:#dffc72;color:var(--c-secondary-deep);transform:translateY(-1px);box-shadow:0 12px 30px rgba(0,0,0,.22)}
.btn-line-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-line-light:hover{background:rgba(255,255,255,.14);color:#fff}
.link-cta{
  display:inline-flex;align-items:center;gap:6px;font-size:16px;font-weight:600;
  color:var(--c-primary);border-bottom:1px solid var(--c-primary);padding-bottom:2px;
}
.link-cta:hover{color:var(--c-primary-dark);border-bottom:2px solid var(--c-primary-dark)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{margin-bottom:48px}
.section-title{position:relative;padding-left:16px;font-size:32px;color:var(--c-secondary)}
.section-title::before{
  content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:3px;
  background:var(--c-primary);border-radius:2px;
}
.section-lead{margin:16px 0 0;max-width:780px;font-size:17px;color:var(--c-text-muted)}

/* ---------- 页头 Banner ---------- */
.banner-wrap{padding:32px 0 0}
.page-banner{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  min-height:280px;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  box-shadow:var(--sh-md);
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,38,32,.88) 0%,rgba(11,38,32,.66) 58%,rgba(11,38,32,.5) 100%);
}
.banner-inner{position:relative;z-index:1;max-width:820px;padding:56px 48px;color:#fff}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.75);margin-bottom:16px;flex-wrap:wrap}
.crumb a{color:rgba(255,255,255,.75)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.5}
.crumb .current{color:#fff}
.page-banner h1{
  font-size:44px;line-height:1.24;color:#fff;letter-spacing:.01em;
}
.page-banner h1 em{font-style:normal;color:var(--c-accent)}
.banner-lead{margin:18px 0 0;font-size:17px;line-height:1.9;color:rgba(255,255,255,.86);max-width:720px}
.banner-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:30px}

/* ---------- 规格参数区 ---------- */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.spec-block h3{font-size:22px;color:var(--c-secondary);margin-bottom:6px}
.spec-note{font-size:14px;color:var(--c-text-muted);margin:0 0 18px}
.spec-list{margin:0;border-top:1px solid var(--c-line)}
.spec-row{
  display:grid;grid-template-columns:120px 1fr;gap:24px;
  padding:18px 0;border-bottom:1px solid var(--c-line);
}
.spec-row dt{margin:0;font-size:15px;font-weight:600;color:var(--c-text-muted)}
.spec-row dd{margin:0;font-size:16px;line-height:1.75;color:var(--c-text)}
.spec-row dd .num{color:var(--c-primary);font-weight:600}

/* ---------- 流程时间轴 ---------- */
.timeline{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.tl-item{position:relative;padding-top:38px}
.tl-item::before{
  content:"";position:absolute;top:5px;left:10px;right:-24px;height:1px;background:var(--c-line);
}
.tl-item:last-child::before{display:none}
.tl-dot{
  position:absolute;top:0;left:0;width:10px;height:10px;border-radius:50%;
  background:var(--c-primary);box-shadow:0 0 0 4px rgba(226,84,42,.12);
}
.tl-step{display:block;font-size:14px;font-weight:600;letter-spacing:.08em;color:var(--c-primary);margin-bottom:6px;font-variant-numeric:tabular-nums}
.tl-item h3{font-size:20px;margin-bottom:8px}
.tl-item p{margin:0;font-size:15px;line-height:1.8;color:var(--c-text-muted)}

/* ---------- 图文交替 ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  margin-bottom:72px;
}
.feature-row:last-child{margin-bottom:0}
.feature-row.reverse .feature-media{order:2}
.feature-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-sm);background:var(--c-surface);
}
.feature-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  transition:transform var(--ease);
}
.feature-media:hover img{transform:scale(1.04)}
.feature-body .badge-tag{
  display:inline-block;font-size:13px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:var(--r-sm);
  padding:4px 10px;margin-bottom:14px;
}
.feature-body h3{font-size:22px;margin-bottom:12px}
.feature-body p{color:var(--c-text-muted);font-size:16px}
.feature-list{list-style:none;margin-top:18px}
.feature-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--c-line);
  font-size:15px;color:var(--c-text);
}
.feature-list li::before{content:"✓";color:var(--c-ok);font-weight:700;line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line);background:transparent}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:12px 0;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--c-text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--c-primary);
  line-height:1;transition:transform var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{color:var(--c-secondary)}
.faq-item p{margin:0 0 20px;padding-right:44px;font-size:16px;line-height:1.85;color:var(--c-text-muted)}

/* ---------- 深色 CTA ---------- */
.cta-dark{
  background:var(--c-secondary-deep);
  border-radius:var(--r-xl);
  padding:56px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  box-shadow:var(--sh-lg);
}
.cta-dark h2{color:#fff;font-size:32px;margin-bottom:10px}
.cta-dark p{margin:0;color:rgba(255,255,255,.78);font-size:16px;max-width:560px}
.cta-dark .btn{flex:none}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg);border-top:1px solid var(--c-line);padding-top:64px;margin-top:0}
.footer-quote{
  display:flex;align-items:center;gap:12px;
  font-size:14px;color:var(--c-text-muted);
  padding:0 0 28px;border-bottom:1px solid var(--c-line);margin-bottom:40px;
}
.footer-quote::before{
  content:"";width:3px;height:18px;background:var(--c-primary);border-radius:2px;flex:none;
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--c-text-muted);margin:0;max-width:320px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--c-secondary);margin-bottom:16px}
.footer-col a,.footer-col span{display:block;font-size:14px;color:var(--c-text-muted);margin-bottom:10px}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .nav-list{gap:28px}
  .nav-side{gap:16px;margin-left:24px}
}
@media (max-width:991.98px){
  .container{padding-left:20px;padding-right:20px}
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .banner-wrap{padding-top:24px}
  .page-banner h1{font-size:34px}
  .banner-inner{padding:40px 32px}
  .section-title{font-size:26px}
  .spec-grid{grid-template-columns:1fr;gap:40px}
  .timeline{grid-template-columns:1fr 1fr;gap:32px 24px}
  .tl-item:nth-child(2n)::before{display:none}
  .feature-row{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .feature-row.reverse .feature-media{order:0}
  .cta-dark{flex-direction:column;align-items:flex-start;padding:44px 32px}
  .cta-dark h2{font-size:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .navbar-toggler{display:flex}
  .navbar-collapse{
    position:fixed;top:72px;left:0;right:0;bottom:0;
    display:block;background:#fff;border-top:1px solid var(--c-line);
    padding:8px 24px 48px;overflow-y:auto;z-index:1039;
    transform:none;
  }
  .navbar-collapse.collapsing{position:fixed;top:72px;left:0;right:0;bottom:0;height:auto!important}
  .site-header.is-scrolled .navbar-collapse,
  .site-header.is-scrolled .navbar-collapse.collapsing{top:60px}
  .nav-list{display:block;width:100%}
  .nav-item{border-bottom:1px solid var(--c-line)}
  .nav-link{display:block;font-size:18px;padding:18px 0}
  .nav-link.active{padding-left:16px}
  .nav-link.active::before{left:0}
  .nav-link::after{display:none}
  .nav-side{display:flex;flex-direction:column;align-items:stretch;gap:14px;margin:28px 0 0;width:100%}
  .nav-side .btn{width:100%}
  .nav-extra{text-align:center;padding:6px 0}
}
@media (max-width:575.98px){
  body{font-size:16px}
  .container{padding-left:16px;padding-right:16px}
  .topbar{display:none}
  .section{padding:48px 0}
  .section-tight{padding:44px 0}
  .section-head{margin-bottom:32px}
  .section-title{font-size:24px}
  .banner-inner{padding:32px 20px}
  .page-banner h1{font-size:30px}
  .banner-lead{font-size:16px}
  .banner-actions .btn{width:100%}
  .timeline{grid-template-columns:1fr}
  .tl-item::before{display:none}
  .tl-item{padding-top:30px;border-left:1px solid var(--c-line);padding-left:20px;margin-left:4px}
  .tl-dot{left:-5px}
  .spec-row{grid-template-columns:1fr;gap:4px}
  .feature-body h3{font-size:20px}
  .faq-item summary{font-size:16px}
  .faq-item p{padding-right:0}
  .cta-dark{padding:32px 22px;border-radius:12px}
  .cta-dark .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}