/* roulang page: index */
:root{
  --teal:#17564E;
  --teal-deep:#0E3B36;
  --teal-light:#2E7A6F;
  --teal-wash:#EAF2EF;
  --sand:#D97A3C;
  --sand-light:#F6E4D6;
  --ink:#1B1F1E;
  --text:#3A4442;
  --mist:#6B7472;
  --line:#E3E7E3;
  --bg:#FBFBF9;
  --block:#F2F4F1;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:999px;
  --sh-1:0 1px 2px rgba(23,86,78,.06), 0 12px 32px -12px rgba(23,86,78,.14);
  --sh-2:0 1px 3px rgba(23,86,78,.09), 0 18px 32px -12px rgba(23,86,78,.2);
  --sec:104px;
  --rail:232px;
  --bs-body-color:#3A4442;
  --bs-body-bg:#FBFBF9;
  --bs-primary:#17564E;
  --bs-primary-rgb:23,86,78;
  --bs-border-color:#E3E7E3;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --bs-link-color:#17564E;
  --bs-link-hover-color:#0E3B36;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--teal-deep);text-decoration:underline}
button{font:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink)}
h1{font-size:clamp(28px,3.6vw,46px);font-weight:800;line-height:1.16;letter-spacing:-.02em}
h2{font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.28;letter-spacing:-.01em}
h3{font-size:18px;font-weight:600;line-height:1.45}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--teal);outline-offset:2px;border-radius:4px;
}
.content{max-width:1240px;margin:0 auto;padding:0 48px}
.sec{padding-top:var(--sec)}
.sec-head{max-width:760px;margin-bottom:36px}
.sec-head .eyebrow{display:block;font-size:12px;letter-spacing:.12em;color:var(--teal-light);margin-bottom:12px}
.sec-head p{margin-top:14px;color:var(--mist);font-size:15px}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ===== 左侧竖栏 ===== */
.side-rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail);
  background:var(--block);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:30px 20px 24px;z-index:1040;
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none}
.brand:hover{text-decoration:none;color:var(--ink)}
.brand-mark{flex:0 0 34px;width:34px;height:34px}
.brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand-name{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-sub{font-size:12px;color:var(--mist);letter-spacing:.1em}
.rail-nav{margin-top:38px;display:flex;flex-direction:column;gap:2px}
.rail-link{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:var(--r-btn);color:var(--text);font-size:14.5px;
  transition:color .22s ease, transform .22s ease, background-color .22s ease;
}
.rail-link .nav-idx{font-size:11px;letter-spacing:.06em;color:var(--mist)}
.rail-link .nav-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rail-link:hover{color:var(--teal);text-decoration:none;background:var(--teal-wash);transform:translateX(2px)}
.rail-link.active{color:var(--teal);background:var(--teal-wash)}
.rail-link.active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;background:var(--teal);border-radius:2px}
.rail-link.active .nav-idx{color:var(--teal)}
.rail-foot{margin-top:auto;padding-top:24px;border-top:1px solid var(--line)}
.rail-note{font-size:12px;color:var(--mist);margin-top:14px;line-height:1.7}

/* ===== 按钮 ===== */
.btn-main,.btn-ghost,.btn-text{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;cursor:pointer;border-radius:var(--r-btn);transition:all .22s cubic-bezier(.22,.61,.36,1)}
.btn-main{background:var(--sand);border:1px solid var(--sand);color:#fff;padding:12px 22px}
.btn-main:hover{background:#C86C33;border-color:#C86C33;color:#fff;text-decoration:none;transform:translateY(-2px)}
.btn-ghost{background:transparent;border:1px solid var(--teal);color:var(--teal);padding:12px 22px}
.btn-ghost:hover{background:var(--teal-wash);color:var(--teal-deep);text-decoration:none}
.btn-text{background:none;border:0;padding:0;color:var(--teal)}
.btn-text .arw{transition:transform .22s ease}
.btn-text:hover{text-decoration:none}
.btn-text:hover .arw{transform:translateX(3px)}
.btn-block{width:100%;justify-content:center}
.link-arrow{font-size:14px;font-weight:600;color:var(--teal);display:inline-flex;align-items:center;gap:6px;position:relative}
.link-arrow::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--teal);transition:width .22s ease}
.link-arrow:hover{text-decoration:none}
.link-arrow:hover::after{width:100%}
.link-arrow .arw{transition:transform .22s ease}
.link-arrow:hover .arw{transform:translateX(3px)}

/* ===== 移动端 ===== */
.mobile-bar{display:none}
.drawer-mask{position:fixed;inset:0;background:rgba(27,31,30,.42);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:1050}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:330px;background:#fff;z-index:1060;
  transform:translateX(102%);transition:transform .28s cubic-bezier(.22,.61,.36,1);
  padding:20px;display:flex;flex-direction:column;overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{background:none;border:0;font-size:22px;line-height:1;color:var(--mist);cursor:pointer;padding:4px 8px}
.drawer-close:hover{color:var(--ink)}
.drawer-nav{margin-top:18px;display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:13px 12px;border-radius:var(--r-btn);color:var(--text);font-size:15px}
.drawer-nav a:hover{background:var(--teal-wash);color:var(--teal);text-decoration:none}
.drawer-nav a.active{background:var(--teal-wash);color:var(--teal);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:22px;border-top:1px solid var(--line)}

/* ===== 主区域 ===== */
.main-shell{margin-left:var(--rail)}
code{font-family:ui-monospace,Menlo,Consolas,monospace}

/* Hero */
.hero{padding:72px 0 0}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--teal-light);margin-bottom:20px}
.hero-eyebrow::before{content:"";width:26px;height:1px;background:var(--teal-light)}
.hero h1{max-width:15em}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.8;color:var(--text);max-width:34em}
.hero-acts{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-media{position:relative;border-radius:var(--r-img);overflow:hidden}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);transition:transform .5s cubic-bezier(.22,.61,.36,1)}
.hero-media:hover img{transform:scale(1.04)}
.hero-marks{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:56px;padding-top:26px;border-top:1px solid var(--line)}
.hero-marks span{font-size:14px;color:var(--mist)}
.hero-marks span b{display:block;color:var(--ink);font-size:15px;font-weight:600;margin-bottom:4px}

/* 痛点 */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.pain-item{border-left:2px solid var(--teal);padding:2px 0 2px 20px}
.pain-item .num{font-size:12px;letter-spacing:.12em;color:var(--sand);font-weight:700}
.pain-item h3{margin-top:10px}
.pain-item p{margin-top:10px;color:var(--mist);font-size:15px}
.pain-item.wide{grid-column:1/-1;border-left-color:var(--teal-light)}

/* 方案 */
.solution{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.solution-side{position:sticky;top:48px}
.solution-side p{margin-top:16px;color:var(--mist);font-size:15px}
.solution-list{display:flex;flex-direction:column;gap:20px}
.sol-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  transition:background-color .22s ease, box-shadow .22s ease, transform .22s ease;
}
.sol-item:hover{background:var(--teal-wash);box-shadow:var(--sh-1);transform:translateY(-2px)}
.sol-top{display:flex;align-items:baseline;gap:12px}
.sol-top .num{font-size:13px;font-weight:700;color:var(--sand);letter-spacing:.08em}
.sol-item p{margin-top:10px;color:var(--text);font-size:15px}
.sol-item .link-arrow{margin-top:14px}

/* 数据 */
.stats-band{background:var(--teal-deep);margin-top:var(--sec)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:56px 32px;border-left:1px solid rgba(255,255,255,.18)}
.stat:first-child{border-left:0;padding-left:0}
.stat .val{font-size:clamp(30px,3.4vw,48px);font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.1}
.stat .val em{font-style:normal;color:var(--sand)}
.stat .lab{margin-top:12px;font-size:14px;color:rgba(255,255,255,.76)}
.stat .desc{margin-top:6px;font-size:13px;color:rgba(255,255,255,.52)}

/* 资讯 */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:24px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.tag-pill{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:var(--r-badge);
  border:1px solid var(--line);background:#fff;color:var(--mist);font-size:13px;transition:all .22s ease;
}
.tag-pill:hover{border-color:var(--teal);color:var(--teal);text-decoration:none}
.tag-pill.is-on{background:var(--teal-wash);border-color:var(--teal-wash);color:var(--teal);font-weight:600}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;transition:box-shadow .22s ease,transform .22s ease}
.news-card:hover{box-shadow:var(--sh-1);transform:translateY(-2px)}
.news-card-link{display:block;color:inherit;text-decoration:none}
.news-card-link:hover{text-decoration:none;color:inherit}
.news-thumb{overflow:hidden;background:var(--block)}
.news-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s cubic-bezier(.22,.61,.36,1)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px}
.badge-soft{display:inline-flex;align-items:center;padding:3px 11px;border-radius:var(--r-badge);background:var(--sand-light);color:#A9551F;font-size:12px;letter-spacing:.02em}
.news-body h3{margin-top:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{margin-top:10px;font-size:14.5px;color:var(--mist);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:16px;font-size:13px;color:var(--mist);display:flex;gap:14px;flex-wrap:wrap}
.empty-box{border:1px solid var(--line);border-radius:var(--r-card);padding:44px 24px;text-align:center;background:#fff}
.empty-box p{color:var(--mist);font-size:15px;margin-bottom:14px}

/* FAQ */
.faq .accordion-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden}
.faq .accordion-button{
  background:#fff;color:var(--ink);font-size:16px;font-weight:600;padding:20px 22px;
  border:0;box-shadow:none;border-radius:var(--r-card);
}
.faq .accordion-button:not(.collapsed){background:var(--teal-wash);color:var(--teal-deep);box-shadow:none}
.faq .accordion-button::after{
  content:"＋";background-image:none;font-size:16px;font-weight:400;color:var(--teal);
  width:auto;height:auto;line-height:1;transition:transform .22s ease;
}
.faq .accordion-button:not(.collapsed)::after{content:"－";transform:rotate(180deg)}
.faq .accordion-button:focus{box-shadow:none}
.faq .accordion-body{padding:18px 22px 24px;font-size:15px;line-height:1.9;color:var(--text);border-left:3px solid var(--teal);margin-left:0}

/* 转化卡 */
.convert{background:var(--teal-wash);border-radius:var(--r-card);padding:32px;display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between}
.convert h2{font-size:22px}
.convert p{margin-top:8px;color:var(--text);font-size:15px;max-width:46em}
.privacy-note{margin-top:22px;font-size:13px;color:var(--mist);line-height:1.9}

/* 表单 */
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13.5px;color:var(--ink);font-weight:600;margin-bottom:8px}
.form-control,.form-select{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 14px;font-size:15px;color:var(--text);background:#fff;transition:border-color .2s ease, box-shadow .2s ease;
}
textarea.form-control{height:auto;min-height:104px;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control:focus,.form-select:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 4px rgba(23,86,78,.08)}
.form-check{display:flex;gap:10px;align-items:flex-start}
.form-check input{margin-top:5px;width:16px;height:16px;accent-color:var(--teal)}
.form-check label{font-size:13px;color:var(--mist);font-weight:400;margin:0;line-height:1.7}
.modal-content{border:0;border-radius:var(--r-card);box-shadow:var(--sh-2)}
.modal-header{border-bottom:1px solid var(--line);padding:20px 24px}
.modal-title{font-size:18px;font-weight:700;color:var(--ink)}
.modal-body{padding:22px 24px 26px}
.btn-close{filter:grayscale(1) opacity(.6)}

/* 页脚 */
.site-foot{margin-top:var(--sec);border-top:1px solid var(--line);padding:56px 0 28px;background:var(--bg)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.foot-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:16px}
.foot-col ul li{margin-bottom:10px}
.foot-col a,.foot-col span{font-size:14px;color:var(--mist)}
.foot-col a:hover{color:var(--teal)}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand .brand-name{font-size:15px}
.foot-col p{font-size:14px;color:var(--mist);line-height:1.85}
.foot-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--mist);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}

/* 动效 */
@media (prefers-reduced-motion: no-preference){
  .js .reveal{opacity:0;transform:translateY(12px);transition:opacity .22s cubic-bezier(.22,.61,.36,1), transform .22s cubic-bezier(.22,.61,.36,1)}
  .js .reveal.in{opacity:1;transform:none}
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* 断点 */
@media (max-width:1199.98px){
  :root{--rail:84px;--sec:80px}
  .side-rail{padding:26px 14px 20px;align-items:center}
  .brand-text,.rail-note{display:none}
  .rail-nav{width:100%;margin-top:30px}
  .rail-link{justify-content:center;padding:12px 6px}
  .rail-link .nav-text{display:none}
  .rail-link .nav-idx{font-size:12px}
  .rail-foot{width:100%;display:flex;flex-direction:column;align-items:center}
  .rail-foot .btn-main{padding:10px;font-size:13px;width:100%;justify-content:center}
  .hero-grid{gap:40px}
  .content{padding:0 32px}
}
@media (max-width:991.98px){
  .side-rail{display:none}
  .main-shell{margin-left:0}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:sticky;top:0;height:60px;padding:0 20px;background:#fff;border-bottom:1px solid var(--line);z-index:1035;
    transition:box-shadow .25s ease;
  }
  .mobile-bar.scrolled{box-shadow:0 6px 18px -12px rgba(23,86,78,.35)}
  .hamburger{background:none;border:1px solid var(--line);border-radius:var(--r-btn);width:40px;height:36px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;cursor:pointer}
  .hamburger span{display:block;width:16px;height:1.5px;background:var(--ink)}
  .hero{padding-top:48px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:2}
  .hero h1{max-width:none}
  .hero-marks{grid-template-columns:repeat(3,1fr);gap:18px}
  .pain-grid{grid-template-columns:repeat(2,1fr)}
  .pain-item.wide{grid-column:1/-1}
  .solution{grid-template-columns:1fr;gap:28px}
  .solution-side{position:static}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat{padding:42px 24px;border-left:0;border-top:1px solid rgba(255,255,255,.18)}
  .stat:first-child{border-top:0;padding-left:24px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  :root{--sec:72px}
  .content{padding:0 20px}
}
@media (max-width:575.98px){
  :root{--sec:56px}
  .hero{padding-top:36px}
  .hero-acts{flex-direction:column;align-items:stretch}
  .hero-acts .btn-main,.hero-acts .btn-ghost{justify-content:center}
  .hero-marks{grid-template-columns:1fr;gap:14px;margin-top:36px}
  .pain-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat{padding:32px 18px}
  .news-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .convert{padding:24px;flex-direction:column;align-items:flex-start}
  .modal-dialog{margin:0;min-height:100%;display:flex;align-items:flex-end}
  .modal-content{border-radius:var(--r-card) var(--r-card) 0 0}
  .modal-body{padding:18px 18px 24px}
  .faq .accordion-button{padding:16px 18px;font-size:15px}
}

/* roulang page: article */
:root{
  --brand:#17564E;
  --brand-dark:#0E3B36;
  --brand-light:#2E7A6F;
  --brand-tint:#EAF2EF;
  --accent:#D97A3C;
  --accent-soft:#F6E4D6;
  --ink:#1B1F1E;
  --text:#3A4442;
  --muted:#6B7472;
  --line:#E3E7E3;
  --bg:#FBFBF9;
  --block:#F2F4F1;
  --card:#FFFFFF;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --shadow-1:0 1px 2px rgba(23,86,78,.06), 0 12px 32px -12px rgba(23,86,78,.14);
  --shadow-2:0 1px 2px rgba(23,86,78,.08), 0 18px 40px -14px rgba(23,86,78,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --rail-w:232px;
  --bs-body-color:#3A4442;
  --bs-body-bg:#FBFBF9;
  --bs-primary:#17564E;
  --bs-border-color:#E3E7E3;
  --bs-border-radius:10px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;}
a:hover{color:var(--brand-light);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,
.rail-link:focus-visible,.rel-card:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}

/* ---------- 左栏导航 ---------- */
.rail{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--rail-w);
  background:var(--block);
  border-right:1px solid var(--line);
  padding:30px 20px 26px;
  display:flex;
  flex-direction:column;
  gap:24px;
  z-index:1040;
  overflow-y:auto;
}
.rail-brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand-mark{width:38px;height:38px;flex:0 0 38px;}
.rail-brand .brand-words{display:flex;flex-direction:column;line-height:1.25;}
.rail-brand .brand-name{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.rail-brand .brand-sub{font-size:11px;letter-spacing:.22em;color:var(--muted);}
.rail-nav{display:flex;flex-direction:column;gap:2px;}
.rail-link{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;
  border-left:3px solid transparent;
  border-radius:8px;
  color:var(--text);
  font-size:14.5px;
  transition:transform .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.rail-link .nav-idx{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums;letter-spacing:.06em;}
.rail-link:hover{color:var(--brand);background:#fff;transform:translateX(2px);}
.rail-link.active{background:#fff;color:var(--brand);border-left-color:var(--brand);font-weight:600;}
.rail-link.active .nav-idx{color:var(--brand-light);}
.rail-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.rail-note{font-size:12px;color:var(--muted);line-height:1.7;}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;
  background:#fff;border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 18px;z-index:1055;
  transition:box-shadow .22s var(--ease);
}
.mobile-bar.is-scrolled{box-shadow:0 8px 22px -16px rgba(23,86,78,.5);}
.mobile-brand{display:flex;align-items:center;gap:9px;text-decoration:none;}
.mobile-brand .brand-name{font-size:15px;font-weight:800;color:var(--ink);}
.mobile-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;}
.burger{
  width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:var(--r-btn);
  display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:17px;
}
.burger:hover{background:var(--brand-tint);}

/* ---------- 结构 ---------- */
.shell{
  margin-left:var(--rail-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.page{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 48px;
  flex:1 1 auto;
}

/* ---------- 按钮 ---------- */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);
  padding:12px 22px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary-c{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-primary-c:hover{background:#C46C33;border-color:#C46C33;color:#fff;transform:translateY(-2px);}
.btn-ghost-c{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost-c:hover{background:var(--brand-tint);color:var(--brand-dark);}
.btn-sm-c{padding:9px 16px;font-size:14px;}
.btn-c:disabled,.btn-c.disabled{opacity:.4;transform:none;pointer-events:none;}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
  position:relative;
}
.link-arrow i{transition:transform .22s var(--ease);font-size:12px;}
.link-arrow::after{
  content:"";position:absolute;left:0;right:16px;bottom:-3px;height:1px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .26s var(--ease);
}
.link-arrow:hover::after{transform:scaleX(1);}
.link-arrow:hover i{transform:translateX(3px);}

.badge-accent{
  display:inline-block;
  font-size:12px;letter-spacing:.12em;
  color:var(--accent);background:var(--accent-soft);
  border-radius:999px;padding:5px 13px;
}
.badge-brand{
  display:inline-block;
  font-size:12px;letter-spacing:.12em;
  color:var(--brand);background:var(--brand-tint);
  border-radius:999px;padding:5px 13px;
}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  padding:30px 0 0;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#CBD2CE;}
.crumb .current{display:inline-block;max-width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:bottom;}

/* ---------- 文章头 ---------- */
.article-head{border-bottom:1px solid var(--line);padding:22px 0 28px;margin-bottom:38px;}
.article-head h1{
  font-size:clamp(24px,3vw,38px);
  font-weight:800;line-height:1.24;letter-spacing:-.02em;
  margin:16px 0 0;max-width:920px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;
  margin-top:18px;font-size:13px;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:#CBD2CE;}

/* ---------- 文章主体栅格 ---------- */
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 260px;
  gap:56px;
  align-items:start;
  padding-bottom:72px;
}
.article-body{
  max-width:760px;
  font-size:17px;
  line-height:1.9;
  color:var(--text);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:clamp(20px,2vw,26px);
  font-weight:700;line-height:1.35;letter-spacing:-.01em;
  color:var(--ink);
  margin:2.4em 0 .6em;
}
.article-body h3{
  font-size:19px;font-weight:600;line-height:1.45;
  color:var(--ink);
  margin:1.8em 0 .5em;
}
.article-body h4{font-size:17px;font-weight:600;margin:1.5em 0 .4em;color:var(--ink);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;}
.article-body li{margin-bottom:8px;line-height:1.9;}
.article-body blockquote{
  margin:1.6em 0;
  padding:20px 22px;
  border-left:3px solid var(--brand);
  background:var(--block);
  border-radius:0 var(--r-img) var(--r-img) 0;
  color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;height:auto;
  border-radius:var(--r-img);
  margin:1.8em 0 .7em;
}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-light);}
.article-body table{
  width:100%;border-collapse:collapse;
  font-size:15px;line-height:1.7;
}
.article-body .table-wrap{overflow-x:auto;margin:1.8em 0;}
.article-body th{
  background:var(--brand-tint);color:var(--brand-dark);
  font-weight:600;text-align:left;
  padding:12px 14px;border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}
.article-body code{
  background:var(--block);border-radius:6px;padding:2px 6px;font-size:14.5px;
  color:var(--brand-dark);
}

.empty-state{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:#fff;
  padding:38px 28px;
  text-align:center;
}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:14px;}

/* ---------- 正文中段转化条 ---------- */
.cta-strip{
  margin:44px 0 40px;
  background:var(--brand-tint);
  border-radius:var(--r-card);
  padding:24px 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
}
.cta-strip h3{font-size:17px;font-weight:700;color:var(--brand-dark);margin-bottom:6px;}
.cta-strip p{font-size:14.5px;color:var(--text);max-width:560px;line-height:1.75;}

/* ---------- 相关推荐 ---------- */
.rel-block{margin-top:16px;}
.rel-title{font-size:22px;font-weight:700;color:var(--ink);margin-bottom:22px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.rel-card{
  display:block;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  color:inherit;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rel-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  border-color:#D6DED9;
  color:inherit;
}
.rel-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--block);}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.rel-card:hover .thumb img{transform:scale(1.04);}
.rel-body{padding:16px 18px 20px;}
.rel-cat{font-size:12px;letter-spacing:.1em;color:var(--brand-light);}
.rel-body h3{
  font-size:16px;font-weight:600;line-height:1.5;color:var(--ink);
  margin:8px 0 12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-time{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}

.back-row{
  display:flex;flex-wrap:wrap;gap:28px;
  margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}

/* ---------- 侧栏 ---------- */
.article-side{
  position:sticky;top:32px;
  display:flex;flex-direction:column;gap:18px;
}
.side-card{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 20px 22px;
}
.side-card h3{
  font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--muted);
  margin-bottom:14px;
}
.side-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px;}
.side-list a{
  display:flex;align-items:flex-start;gap:8px;
  font-size:14.5px;color:var(--text);line-height:1.6;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.side-list a::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-light);
  margin-top:9px;flex:0 0 6px;
}
.side-list a:hover{color:var(--brand);transform:translateX(2px);}
.side-tip{
  background:var(--block);border:1px solid var(--line);
  border-radius:var(--r-card);padding:18px 20px;
  font-size:13.5px;color:var(--muted);line-height:1.75;
}
.side-tip strong{display:block;color:var(--ink);font-size:14px;font-weight:600;margin-bottom:6px;}

/* ---------- 页脚 ---------- */
.site-foot{
  border-top:1px solid var(--line);
  background:var(--bg);
  margin-top:auto;
  padding:56px 0 26px;
}
.site-foot .content{max-width:1240px;margin:0 auto;padding:0 48px;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:34px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.foot-brand .brand-mark{width:38px;height:38px;flex:0 0 38px;}
.foot-brand .brand-name{font-size:16px;font-weight:800;color:var(--ink);}
.foot-col p{font-size:14px;color:var(--muted);line-height:1.8;max-width:330px;}
.foot-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:16px;}
.foot-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:11px;}
.foot-col a,.foot-col span{font-size:14px;color:var(--muted);}
.foot-col a:hover{color:var(--brand);}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line);
  margin-top:42px;padding-top:20px;
  font-size:13px;color:var(--muted);
}

/* ---------- 弹层表单 ---------- */
.modal-content{
  border:0;border-radius:var(--r-card);
  box-shadow:var(--shadow-2);
  background:#fff;
}
.modal-header{border-bottom:1px solid var(--line);padding:20px 24px;}
.modal-title{font-size:18px;font-weight:700;color:var(--ink);}
.modal-body{padding:22px 24px 26px;}
.modal-dialog{max-width:480px;}
.form-label{font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:7px;}
.form-control,.form-select{
  height:48px;border-radius:var(--r-btn);
  border:1px solid var(--line);font-size:15px;color:var(--text);
  background:#fff;
}
textarea.form-control{height:auto;min-height:98px;padding-top:12px;}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(23,86,78,.08);
  color:var(--text);
}
.form-control::placeholder{color:#9AA39F;}
.form-check-input{width:16px;height:16px;margin-top:3px;border-color:#C6CFCA;}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand);}
.form-check-label{font-size:13px;color:var(--muted);line-height:1.65;}
.form-hint{font-size:12.5px;color:var(--muted);margin-top:10px;}

/* ---------- 抽屉 ---------- */
.drawer{background:var(--bg);width:300px;border-left:1px solid var(--line);}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px;}
.drawer .offcanvas-title{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:.02em;}
.drawer .offcanvas-body{padding:18px 20px 26px;display:flex;flex-direction:column;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:var(--r-btn);
  color:var(--text);font-size:14.5px;
  border-left:3px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.drawer-nav a span.idx{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums;}
.drawer-nav a:hover,.drawer-nav a.active{background:#fff;color:var(--brand);border-left-color:var(--brand);transform:translateX(2px);}

/* ---------- 入场动效 ---------- */
.fade-up{opacity:0;transform:translateY(12px);}
.fade-up.is-in{opacity:1;transform:none;transition:opacity .22s var(--ease),transform .22s var(--ease);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .page{padding:0 32px;}
  .site-foot .content{padding:0 32px;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-side{display:none;}
  .article-body{max-width:100%;}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:34px;}
}
@media (max-width:991.98px){
  .rail{display:none;}
  .mobile-bar{display:flex;}
  .shell{margin-left:0;padding-top:60px;}
  .page{padding:0 32px;}
  .site-foot .content{padding:0 32px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .cta-strip{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  body{font-size:15.5px;}
  .page{padding:0 20px;}
  .site-foot .content{padding:0 20px;}
  .crumb{padding-top:22px;}
  .article-head{padding:18px 0 22px;margin-bottom:28px;}
  .article-body{font-size:16.5px;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .foot-bottom{flex-direction:column;}
  .sidebar-note{display:none;}
  .cta-strip{padding:20px;}
  .modal-dialog{margin:auto 0 0;max-width:100%;}
  .modal-content{border-radius:16px 16px 0 0;}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .fade-up{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --brand:#17564E;
  --brand-deep:#0E3B36;
  --brand-light:#2E7A6F;
  --brand-8:#EAF2EF;
  --sand:#D97A3C;
  --sand-light:#F6E4D6;
  --ink:#1B1F1E;
  --text:#3A4442;
  --muted:#6B7472;
  --line:#E3E7E3;
  --bg:#FBFBF9;
  --block:#F2F4F1;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow:0 1px 2px rgba(23,86,78,.06), 0 12px 32px -12px rgba(23,86,78,.14);
  --shadow-hover:0 2px 4px rgba(23,86,78,.10), 0 18px 34px -12px rgba(23,86,78,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --rail-w:232px;
  --rail-w-narrow:76px;
  --bs-primary:#17564E;
  --bs-body-color:#3A4442;
  --bs-body-bg:#FBFBF9;
  --bs-border-color:#E3E7E3;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-link-color:#17564E;
  --bs-link-hover-color:#0E3B36;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand-deep);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
h1,h2,h3,h4,p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 左栏导航 ---------- */
.rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);
  background:var(--block);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:28px 20px 24px;
  z-index:1030;
  overflow-y:auto;
}
.rail-brand{display:flex;align-items:center;gap:10px;margin-bottom:8px;}
.brand-mark{width:40px;height:40px;flex:0 0 40px;}
.brand-txt{display:flex;flex-direction:column;line-height:1.25;}
.brand-txt strong{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em;}
.brand-txt span{font-size:12px;letter-spacing:.12em;color:var(--muted);}
.rail-desc{margin-top:14px;font-size:13px;line-height:1.7;color:var(--muted);}
.rail-line{height:1px;background:var(--line);margin:22px 0;}
.rail-nav{display:flex;flex-direction:column;gap:4px;flex:1 1 auto;}
.rail-link{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;
  border-left:3px solid transparent;
  border-radius:0 8px 8px 0;
  color:var(--text);
  font-size:14px;
  transition:transform .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.rail-link .nav-idx{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;}
.rail-link .nav-text{transition:transform .18s var(--ease);}
.rail-link:hover{color:var(--brand);background:#fff;}
.rail-link:hover .nav-text{transform:translateX(2px);}
.rail-link.active{
  color:var(--brand);
  background:var(--brand-8);
  border-left-color:var(--brand);
  font-weight:600;
}
.rail-link.active .nav-idx{color:var(--brand);}
.rail-foot{margin-top:18px;}
.rail-cta{
  width:100%;display:inline-flex;align-items:center;justify-content:center;
  height:44px;border-radius:var(--radius-btn);
  background:var(--sand);color:#fff;font-size:14px;font-weight:600;
  border:none;transition:background .18s var(--ease),transform .18s var(--ease);
}
.rail-cta:hover{background:#c96c31;color:#fff;transform:translateY(-2px);}
.rail-copy{margin-top:14px;font-size:12px;color:var(--muted);line-height:1.6;}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;
  background:#fff;border-bottom:1px solid var(--line);
  align-items:center;justify-content:space-between;
  padding:0 20px;z-index:1040;
  transition:box-shadow .2s var(--ease);
}
.topbar.scrolled{box-shadow:0 6px 18px -14px rgba(23,86,78,.4);}
.topbar-brand{display:flex;align-items:center;gap:8px;}
.topbar-brand strong{font-size:15px;font-weight:800;color:var(--ink);}
.burger{
  width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-btn);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(84vw,340px);
  background:#fff;border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .26s var(--ease);
  z-index:1060;padding:22px 20px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-head strong{font-size:15px;color:var(--ink);}
.drawer-close{background:none;border:1px solid var(--line);width:36px;height:36px;border-radius:var(--radius-btn);cursor:pointer;color:var(--text);}
.drawer .rail-link{font-size:15px;padding:13px 12px;border-radius:8px;}
.scrim{position:fixed;inset:0;background:rgba(27,31,30,.42);opacity:0;visibility:hidden;transition:opacity .24s var(--ease);z-index:1050;}
.scrim.open{opacity:1;visibility:visible;}

/* ---------- 布局 ---------- */
.shell{margin-left:var(--rail-w);}
.content{max-width:1240px;margin:0 auto;padding:0 48px;}
section{padding:96px 0;}
.bleed{margin-left:-48px;margin-right:-48px;padding-left:48px;padding-right:48px;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);padding-top:28px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:#C3CAC6;}
.crumb .now{color:var(--muted);}

/* ---------- Hero ---------- */
.hero{
  background:var(--brand-deep);
  color:#fff;
  padding:56px 48px 60px;
  margin:20px -48px 0;
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.045) 0 1px,transparent 1px 18px);
  opacity:.5;
}
.hero-inner{position:relative;z-index:1;max-width:820px;}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.12em;color:var(--sand-light);
  border:1px solid rgba(217,122,60,.55);border-radius:var(--radius-pill);
  padding:5px 14px;margin-bottom:20px;
}
.hero h1{
  font-size:clamp(28px,3.6vw,46px);font-weight:800;line-height:1.16;letter-spacing:-.02em;
  color:#fff;margin-bottom:18px;
}
.hero p{font-size:16px;line-height:1.85;color:rgba(255,255,255,.78);max-width:720px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  background:var(--sand);color:#fff;font-size:15px;font-weight:600;border:none;
  transition:background .18s var(--ease),transform .18s var(--ease);
}
.btn-main:hover{background:#c96c31;color:#fff;transform:translateY(-2px);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  border:1px solid var(--brand);color:var(--brand);background:transparent;
  font-size:15px;font-weight:600;
  transition:background .18s var(--ease),transform .18s var(--ease),color .18s var(--ease);
}
.btn-ghost:hover{background:var(--brand-8);color:var(--brand-deep);transform:translateY(-2px);}
.hero .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;}
.hero .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease);
}
.link-arrow .arw{transition:transform .2s var(--ease);}
.link-arrow:hover{border-bottom-color:var(--brand);}
.link-arrow:hover .arw{transform:translateX(3px);}

/* ---------- 通用板块标题 ---------- */
.sec-head{max-width:720px;margin-bottom:40px;}
.sec-tag{
  display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--brand);
  background:var(--brand-8);border-radius:var(--radius-pill);padding:5px 14px;margin-bottom:16px;
}
.sec-head h2{
  font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.28;letter-spacing:-.01em;color:var(--ink);
}
.sec-head p{margin-top:14px;font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- 问题清单 + 长文 ---------- */
.qgrid{display:grid;grid-template-columns:40% 60%;gap:56px;align-items:start;}
.qlist{position:sticky;top:40px;}
.qlist-title{font-size:13px;letter-spacing:.12em;color:var(--muted);margin-bottom:18px;}
.qitem{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
  transition:transform .18s var(--ease);
}
.qitem:hover{transform:translateY(-2px);}
.qitem .qno{
  font-size:13px;font-weight:700;color:var(--sand);font-variant-numeric:tabular-nums;flex:0 0 26px;padding-top:2px;
}
.qitem .qtx{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;}
.qitem .qsub{font-size:13px;color:var(--muted);margin-top:4px;line-height:1.6;font-weight:400;}
.longdoc h2{
  font-size:clamp(20px,2vw,26px);font-weight:700;color:var(--ink);line-height:1.35;
  margin:44px 0 16px;letter-spacing:-.01em;
}
.longdoc h2:first-child{margin-top:0;}
.longdoc h3{font-size:17px;font-weight:600;color:var(--ink);margin:26px 0 10px;}
.longdoc p{font-size:16px;line-height:1.9;color:var(--text);margin-bottom:18px;max-width:40em;}
.longdoc ul{margin:0 0 20px;}
.longdoc li{
  position:relative;padding-left:18px;font-size:15px;line-height:1.9;color:var(--text);margin-bottom:8px;
}
.longdoc li::before{
  content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;border-radius:50%;background:var(--brand-light);
}
.doc-note{
  background:var(--block);border-left:3px solid var(--brand);
  padding:20px 22px;border-radius:0 var(--radius-btn) var(--radius-btn) 0;
  font-size:15px;line-height:1.85;color:var(--text);margin:8px 0 24px;max-width:40em;
}
.doc-figure{margin:26px 0;border-radius:var(--radius-img);overflow:hidden;}
.doc-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
.doc-figure:hover img{transform:scale(1.04);}
.doc-figure figcaption{font-size:13px;color:var(--muted);margin-top:10px;}

/* ---------- 场景条目卡 ---------- */
.scene-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.scene-left{position:sticky;top:40px;}
.scene-left h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.3;color:var(--ink);letter-spacing:-.01em;}
.scene-left p{margin-top:16px;font-size:15px;color:var(--muted);line-height:1.85;}
.entry{
  display:block;padding:24px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:#fff;margin-bottom:20px;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.entry:hover{background:var(--brand-8);transform:translateY(-2px);box-shadow:var(--shadow);}
.entry-top{display:flex;align-items:center;gap:12px;margin-bottom:10px;}
.entry-no{
  font-size:13px;font-weight:800;color:var(--sand);font-variant-numeric:tabular-nums;
  border:1px solid var(--sand-light);border-radius:var(--radius-pill);padding:2px 12px;
}
.entry h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.45;}
.entry p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:14px;}
.entry .link-arrow{font-size:14px;}
.entry:hover .link-arrow{border-bottom-color:var(--brand);}

/* ---------- 深色数据条 ---------- */
.band{background:var(--brand-deep);color:#fff;padding:64px 48px;}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.band-item{padding:6px 26px;border-left:1px solid rgba(255,255,255,.16);}
.band-item:first-child{border-left:none;padding-left:0;}
.band-num{
  font-size:clamp(34px,3.6vw,50px);font-weight:800;line-height:1;color:var(--sand);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.band-item h3{font-size:16px;font-weight:600;color:#fff;margin:14px 0 8px;}
.band-item p{font-size:14px;color:rgba(255,255,255,.7);line-height:1.75;}

/* ---------- 内嵌转化卡 ---------- */
.convert{
  background:var(--brand-8);border-radius:var(--radius-card);
  padding:32px;display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.convert h2{font-size:22px;font-weight:700;color:var(--ink);line-height:1.4;}
.convert p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.8;max-width:46em;}

/* ---------- FAQ ---------- */
.acc .accordion-item{
  border:none;border-bottom:1px solid var(--line);background:transparent;
}
.acc .accordion-button{
  background:transparent;color:var(--ink);
  font-size:16px;font-weight:600;line-height:1.6;
  padding:22px 46px 22px 0;box-shadow:none;border-radius:0;
}
.acc .accordion-button:not(.collapsed){
  background:transparent;color:var(--brand);
  border-left:3px solid var(--brand);padding-left:18px;box-shadow:none;
}
.acc .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand);outline-offset:2px;}
.acc .accordion-button::after{
  content:"＋";background-image:none;font-size:18px;font-weight:400;color:var(--muted);
  position:absolute;right:8px;transition:transform .24s var(--ease),color .24s var(--ease);
  display:flex;align-items:center;justify-content:center;width:24px;height:24px;
}
.acc .accordion-button:not(.collapsed)::after{content:"－";color:var(--brand);transform:rotate(180deg);}
.acc .accordion-body{
  font-size:15px;line-height:1.85;color:var(--text);padding:0 0 24px;max-width:62em;
}
.acc .accordion-button:not(.collapsed) + .accordion-collapse .accordion-body{padding-left:18px;}

/* ---------- 底部 CTA ---------- */
.cta-end{
  background:var(--brand-8);border-radius:var(--radius-card);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
}
.cta-end h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;color:var(--ink);line-height:1.4;}
.cta-end p{margin-top:10px;font-size:15px;color:var(--muted);line-height:1.8;max-width:48em;}

/* ---------- 表单弹层 ---------- */
.modal-content{
  border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow);
}
.modal-header{border-bottom:1px solid var(--line);padding:20px 24px;}
.modal-title{font-size:17px;font-weight:700;color:var(--ink);}
.modal-body{padding:24px;}
.modal-footer{border-top:1px solid var(--line);padding:16px 24px;}
.form-label{font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.form-control,.form-select{
  height:48px;border:1px solid var(--line);border-radius:var(--radius-btn);
  font-size:15px;color:var(--text);background:#fff;
}
textarea.form-control{height:auto;min-height:96px;padding-top:12px;line-height:1.7;}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);box-shadow:0 0 0 4px rgba(23,86,78,.08);
}
.form-check-label{font-size:13px;color:var(--muted);line-height:1.7;}
.form-check-input{width:16px;height:16px;margin-top:.28em;border-color:#CBD3CE;}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand);}
.modal-note{font-size:13px;color:var(--muted);line-height:1.7;margin-top:4px;}

/* ---------- 页脚 ---------- */
.site-foot{border-top:1px solid var(--line);background:#fff;padding:64px 0 28px;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand .brand-name{font-size:16px;font-weight:800;color:var(--ink);}
.foot-col p{font-size:14px;color:var(--muted);line-height:1.8;max-width:34em;}
.foot-col h4{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:16px;}
.foot-col ul li{margin-bottom:10px;}
.foot-col ul a,.foot-col ul span{font-size:14px;color:var(--muted);}
.foot-col ul a:hover{color:var(--brand);}
.foot-bottom{
  border-top:1px solid var(--line);margin-top:44px;padding-top:22px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .rail{width:var(--rail-w-narrow);padding:24px 12px;align-items:center;}
  .rail-brand .brand-txt,.rail-desc,.rail-link .nav-text,.rail-copy{display:none;}
  .rail-link{justify-content:center;padding:12px 8px;border-left-width:3px;}
  .rail-cta{width:44px;padding:0;font-size:0;}
  .rail-cta::before{content:"✉";font-size:16px;}
  .shell{margin-left:var(--rail-w-narrow);}
  .content{padding:0 32px;}
  .hero{margin-left:-32px;margin-right:-32px;padding:52px 32px 56px;}
  .bleed{margin-left:-32px;margin-right:-32px;padding-left:32px;padding-right:32px;}
  .band{padding:56px 32px;}
  section{padding:72px 0;}
  .qgrid,.scene-grid{gap:36px;}
  .band-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .band-item{padding-left:22px;}
  .band-item:nth-child(odd){border-left:none;padding-left:0;}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:991.98px){
  .rail{display:none;}
  .topbar{display:flex;}
  .shell{margin-left:0;padding-top:60px;}
  .content{padding:0 20px;}
  .crumb{padding-top:20px;}
  .hero{margin-left:-20px;margin-right:-20px;padding:44px 20px 48px;margin-top:0;}
  .bleed{margin-left:-20px;margin-right:-20px;padding-left:20px;padding-right:20px;}
  section{padding:56px 0;}
  .qgrid,.scene-grid{grid-template-columns:1fr;gap:28px;}
  .qlist,.scene-left{position:static;}
  .band{padding:48px 20px;}
  .convert,.cta-end{padding:26px;flex-direction:column;align-items:flex-start;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:575.98px){
  .band-grid{grid-template-columns:1fr 1fr;}
  .band-num{font-size:34px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;justify-content:center;}
  .modal-dialog{margin:0;position:fixed;left:0;right:0;bottom:0;}
  .modal-content{border-radius:14px 14px 0 0;}
  .foot-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .entry:hover,.btn-main:hover,.btn-ghost:hover,.qitem:hover,.rail-cta:hover{transform:none;}
  .doc-figure:hover img{transform:none;}
}

/* roulang page: category2 */
:root{
  --primary:#17564E;
  --primary-deep:#0E3B36;
  --primary-light:#2E7A6F;
  --primary-08:#EAF2EF;
  --accent:#D97A3C;
  --accent-soft:#F6E4D6;
  --ink:#1B1F1E;
  --text:#3A4442;
  --muted:#6B7472;
  --line:#E3E7E3;
  --bg:#FBFBF9;
  --block:#F2F4F1;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:999px;
  --sh:0 1px 2px rgba(23,86,78,.06), 0 12px 32px -12px rgba(23,86,78,.14);
  --sh-hover:0 1px 2px rgba(23,86,78,.09), 0 18px 38px -12px rgba(23,86,78,.24);
  --ease:cubic-bezier(.22,.61,.36,1);
  --rail-w:232px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;

  --bs-primary:#17564E;
  --bs-body-color:#3A4442;
  --bs-body-bg:#FBFBF9;
  --bs-border-color:#E3E7E3;
  --bs-border-radius:10px;
  --bs-link-color:#17564E;
  --bs-link-hover-color:#0E3B36;
  --bs-font-sans-serif:var(--font-cn);
  --bs-emphasis-color:#1B1F1E;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--primary-deep);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
h1,h2,h3,h4{color:var(--ink);margin:0;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}

/* ---------- 左侧竖向导航 ---------- */
.rail{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--rail-w);
  background:var(--block);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  padding:28px 20px 24px;
  z-index:60;
}
.rail-brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
}
.brand-mark{width:40px;height:40px;flex:0 0 40px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{
  font-size:16px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.02em;
}
.brand-sub{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--muted);
  margin-top:3px;
}
.rail-nav{
  display:flex;
  flex-direction:column;
  gap:2px;
  margin-top:22px;
  flex:1 1 auto;
}
.rail-link{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:11px 12px 11px 14px;
  border-left:3px solid transparent;
  border-radius:0 10px 10px 0;
  color:var(--text);
  font-size:14.5px;
  transition:transform .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.rail-link .nav-idx{
  font-size:12px;
  color:var(--muted);
  letter-spacing:.08em;
  transition:color .2s var(--ease);
}
.rail-link:hover{
  color:var(--primary);
  transform:translateX(2px);
  background:rgba(23,86,78,.05);
}
.rail-link:hover .nav-idx{color:var(--primary-light);}
.rail-link.active{
  color:var(--primary);
  background:var(--primary-08);
  border-left-color:var(--primary);
  font-weight:600;
}
.rail-link.active .nav-idx{color:var(--primary-light);}
.rail-foot{
  margin-top:20px;
  padding-top:18px;
  border-top:1px solid var(--line);
}
.rail-foot .btn-main{
  width:100%;
  justify-content:center;
}
.rail-note{
  font-size:12px;
  color:var(--muted);
  line-height:1.6;
  margin:14px 0 0;
}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:60px;
  background:#fff;
  border-bottom:1px solid var(--line);
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  z-index:70;
  transition:box-shadow .25s var(--ease);
}
.mobile-bar.is-scrolled{box-shadow:0 6px 18px -12px rgba(23,86,78,.4);}
.mb-brand{display:flex;align-items:center;gap:9px;}
.mb-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;}
.mb-brand span{font-size:15px;font-weight:800;color:var(--ink);letter-spacing:-.02em;}
.mb-toggle{
  width:42px;height:42px;
  border:1px solid var(--line);
  background:#fff;
  border-radius:var(--r-btn);
  color:var(--ink);
  font-size:17px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.mb-toggle:hover{background:var(--primary-08);color:var(--primary);}
.drawer-backdrop{
  position:fixed;inset:0;
  background:rgba(27,31,30,.42);
  opacity:0;
  pointer-events:none;
  transition:opacity .25s var(--ease);
  z-index:80;
}
.drawer-backdrop.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(84vw,320px);
  background:#fff;
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  z-index:90;
  padding:22px 20px;
  display:flex;
  flex-direction:column;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-title{font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.04em;}
.drawer-close{
  width:36px;height:36px;border:1px solid var(--line);background:#fff;
  border-radius:var(--r-btn);color:var(--muted);
}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin:18px 0 22px;}
.drawer-nav a{
  display:flex;gap:10px;align-items:baseline;
  padding:13px 12px;
  border-left:3px solid transparent;
  border-radius:0 10px 10px 0;
  color:var(--text);
  font-size:15px;
}
.drawer-nav a.active{
  color:var(--primary);
  background:var(--primary-08);
  border-left-color:var(--primary);
  font-weight:600;
}
.drawer-nav a:hover{background:rgba(23,86,78,.05);color:var(--primary);}
.drawer-nav .nav-idx{font-size:12px;color:var(--muted);}

/* ---------- 页面骨架 ---------- */
.page{margin-left:var(--rail-w);}
.content{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 48px;
}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-title{
  font-size:clamp(22px,2.4vw,32px);
  font-weight:700;
  line-height:1.28;
  letter-spacing:-.01em;
}
.section-lead{
  color:var(--muted);
  font-size:15px;
  margin:14px 0 0;
  max-width:38em;
}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--primary-light);
  margin-bottom:14px;
}

/* ---------- 面包屑 ---------- */
.crumb{
  padding:32px 0 0;
  font-size:13px;
  color:var(--muted);
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#C6CFCB;font-weight:300;}
.crumb .current{color:var(--muted);}

/* ---------- 分类页 Hero ---------- */
.cat-hero{
  position:relative;
  margin-top:26px;
  border-radius:var(--r-card);
  background:var(--primary-deep);
  color:#fff;
  padding:56px 48px 48px;
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(112deg,rgba(255,255,255,.045) 0 1px,transparent 1px 15px);
  pointer-events:none;
}
.cat-hero .hero-inner{position:relative;z-index:1;max-width:820px;}
.cat-hero h1{
  color:#fff;
  font-size:clamp(28px,3.6vw,46px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.02em;
}
.cat-hero p{
  color:rgba(255,255,255,.82);
  font-size:16px;
  line-height:1.85;
  margin:20px 0 0;
  max-width:40em;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;
  padding:5px 12px;
  border-radius:var(--r-badge);
  background:rgba(255,255,255,.12);
  color:#fff;
  letter-spacing:.02em;
}
.badge-soft i{font-size:11px;}
.hero-metrics{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.16);
}
.hero-metrics .metric{
  padding-right:36px;
  margin-right:36px;
  border-right:1px solid rgba(255,255,255,.16);
}
.hero-metrics .metric:last-child{border-right:0;margin-right:0;padding-right:0;}
.metric-num{
  display:block;
  font-size:24px;
  font-weight:800;
  color:var(--accent-soft);
  line-height:1.2;
}
.metric-label{
  display:block;
  font-size:13px;
  color:rgba(255,255,255,.72);
  margin-top:6px;
}

/* ---------- 时间线 ---------- */
.timeline-intro{
  display:flex;
  flex-wrap:wrap;
  gap:32px;
  align-items:flex-end;
  justify-content:space-between;
  margin-bottom:56px;
}
.timeline{
  position:relative;
  list-style:none;
  padding:0;
  margin:0;
}
.timeline::before{
  content:"";
  position:absolute;
  left:50%;
  top:10px;
  bottom:10px;
  width:1px;
  background:var(--line);
  transform:translateX(-.5px);
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:1fr 72px 1fr;
  align-items:start;
  margin-bottom:64px;
}
.tl-item:last-child{margin-bottom:0;}
.tl-dot{
  grid-column:2;
  grid-row:1;
  justify-self:center;
  width:14px;
  height:14px;
  border-radius:var(--r-badge);
  background:var(--accent);
  box-shadow:0 0 0 6px var(--accent-soft);
  margin-top:10px;
}
.tl-text{grid-column:1;grid-row:1;padding-right:12px;}
.tl-media{grid-column:3;grid-row:1;padding-left:12px;}
.tl-item:nth-child(even) .tl-text{grid-column:3;padding-right:0;padding-left:12px;}
.tl-item:nth-child(even) .tl-media{grid-column:1;padding-left:0;padding-right:12px;}
.tl-step{
  display:inline-block;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--accent);
  border:1px solid var(--accent-soft);
  background:#fff;
  border-radius:var(--r-badge);
  padding:3px 11px;
  margin-bottom:14px;
}
.tl-text h3{
  font-size:18px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:10px;
}
.tl-text p{font-size:15.5px;color:var(--text);margin-bottom:12px;}
.tick-list li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.8;
  margin-bottom:6px;
}
.tick-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:1px;
  background:var(--primary-light);
}
.tl-media figure{margin:0;}
.tl-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-img);
}
.tl-media figcaption{
  font-size:12.5px;
  color:var(--muted);
  margin-top:10px;
}

/* ---------- 准备清单 5/7 分栏 ---------- */
.split{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:start;
}
.split-sticky{position:sticky;top:40px;}
.prep-list{display:flex;flex-direction:column;gap:0;}
.prep-item{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:20px;
  padding:24px 4px;
  border-top:1px solid var(--line);
  transition:background .22s var(--ease);
}
.prep-item:last-child{border-bottom:1px solid var(--line);}
.prep-item:hover{background:var(--primary-08);}
.prep-num{
  font-size:22px;
  font-weight:800;
  color:var(--accent);
  line-height:1.3;
}
.prep-body h3{
  font-size:17px;
  font-weight:600;
  line-height:1.45;
  margin-bottom:6px;
}
.prep-body p{
  font-size:14.5px;
  color:var(--muted);
  margin:0;
}

/* ---------- CTA 条 ---------- */
.cta-strip{
  background:var(--primary-08);
  border-radius:var(--r-card);
  padding:32px 36px;
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  align-items:center;
  justify-content:space-between;
}
.cta-strip h2{
  font-size:clamp(19px,1.9vw,23px);
  font-weight:700;
  line-height:1.4;
}
.cta-strip p{
  font-size:14.5px;
  color:var(--muted);
  margin:8px 0 0;
  max-width:44em;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}

/* ---------- 按钮 ---------- */
.btn-main{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--accent);
  color:#fff;
  border:1px solid var(--accent);
  border-radius:var(--r-btn);
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-main:hover{
  background:#C96A2E;
  border-color:#C96A2E;
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--sh);
}
.btn-main:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:transparent;
  color:var(--primary);
  border:1px solid var(--primary);
  border-radius:var(--r-btn);
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .2s var(--ease),transform .2s var(--ease),color .2s var(--ease);
}
.btn-ghost:hover{background:var(--primary-08);color:var(--primary-deep);transform:translateY(-2px);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:none;
  border:0;
  padding:0;
  color:var(--primary);
  font-size:14.5px;
  font-weight:600;
  cursor:pointer;
}
.btn-text .txt{
  position:relative;
}
.btn-text .txt::after{
  content:"";
  position:absolute;
  left:0;bottom:-3px;
  width:0;height:1px;
  background:var(--primary);
  transition:width .24s var(--ease);
}
.btn-text:hover .txt::after{width:100%;}
.btn-text i{transition:transform .24s var(--ease);}
.btn-text:hover i{transform:translateX(3px);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;}
.accordion-item{
  border:0;
  border-top:1px solid var(--line);
  background:transparent;
}
.accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion-button{
  background:transparent;
  color:var(--ink);
  font-size:16px;
  font-weight:600;
  padding:22px 44px 22px 0;
  box-shadow:none;
  border-radius:0;
}
.accordion-button:not(.collapsed){
  color:var(--primary-deep);
  background:rgba(23,86,78,.03);
}
.accordion-button::after{
  display:none;
}
.accordion-button:focus{
  box-shadow:none;
  outline:2px solid var(--primary);
  outline-offset:-2px;
}
.faq-plus{
  position:absolute;
  right:6px;
  top:50%;
  transform:translateY(-50%);
  font-size:18px;
  color:var(--primary-light);
  line-height:1;
  transition:transform .24s var(--ease);
  pointer-events:none;
}
.accordion-button:not(.collapsed) .faq-plus{transform:translateY(-50%) rotate(180deg);}
.accordion-button .plus-mark{display:inline-block;}
.accordion-button:not(.collapsed) .plus-mark{display:none;}
.accordion-button.collapsed .minus-mark{display:none;}
.accordion-body{
  font-size:15px;
  color:var(--text);
  padding:0 44px 26px 18px;
  border-left:3px solid transparent;
}
.accordion-collapse.show .accordion-body,
.accordion-collapse.collapsing .accordion-body{border-left-color:var(--primary);}
.accordion-item{position:relative;}

/* ---------- 表单 ---------- */
.modal-content{
  border:0;
  border-radius:var(--r-card);
  box-shadow:var(--sh);
}
.modal-header{
  border-bottom:1px solid var(--line);
  padding:20px 24px;
}
.modal-title{font-size:17px;font-weight:700;color:var(--ink);}
.modal-body{padding:22px 24px 26px;}
.modal-footer{border-top:1px solid var(--line);padding:16px 24px;}
.form-label{
  font-size:13.5px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:7px;
}
.form-control,.form-select{
  height:48px;
  border-radius:var(--r-input);
  border:1px solid var(--line);
  font-size:15px;
  color:var(--text);
  background:#fff;
  padding:0 14px;
}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.7;}
.form-control:focus,.form-select:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(23,86,78,.08);
}
.form-check-input{
  width:18px;height:18px;
  border:1px solid var(--line);
  border-radius:5px;
  margin-top:3px;
}
.form-check-input:checked{
  background-color:var(--primary);
  border-color:var(--primary);
}
.form-check-input:focus{box-shadow:0 0 0 4px rgba(23,86,78,.1);}
.form-check-label{font-size:13px;color:var(--muted);line-height:1.7;}
.field-hint{font-size:12.5px;color:var(--muted);margin-top:6px;}

/* ---------- 隐私说明条 ---------- */
.privacy-bar{
  border-top:1px solid var(--line);
  padding:18px 0;
  font-size:13px;
  color:var(--muted);
}
.privacy-bar a{text-decoration:underline;text-underline-offset:3px;}

/* ---------- 页脚 ---------- */
.site-foot{
  border-top:1px solid var(--line);
  background:var(--bg);
  padding:64px 0 0;
  margin-top:0;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand .brand-name{font-size:16px;}
.foot-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:16px;
}
.foot-col p{font-size:14px;color:var(--muted);line-height:1.8;margin:0;max-width:32em;}
.foot-col ul li{margin-bottom:10px;}
.foot-col ul a,.foot-col ul span{font-size:14px;color:var(--muted);}
.foot-col ul a:hover{color:var(--primary);}
.foot-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  font-size:13px;
  color:var(--muted);
}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}

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

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--rail-w:76px;}
  .rail{padding:24px 10px;align-items:center;}
  .rail-brand{flex-direction:column;gap:6px;padding-bottom:18px;width:100%;}
  .brand-text{display:none;}
  .rail-link{justify-content:center;padding:12px 6px;border-left-width:3px;}
  .rail-link .nav-text{display:none;}
  .rail-link .nav-idx{font-size:12.5px;}
  .rail-foot{width:100%;}
  .rail-foot .btn-main{padding:10px 0;font-size:0;}
  .rail-foot .btn-main i{font-size:16px;}
  .rail-note{display:none;}
  .content{padding:0 32px;}
  .split{gap:40px;}
  .tl-item{grid-template-columns:1fr 56px 1fr;}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .foot-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .rail{display:none;}
  .mobile-bar{display:flex;}
  .page{margin-left:0;padding-top:60px;}
  .content{padding:0 32px;}
  .cat-hero{padding:44px 32px 38px;margin-top:20px;}
  .section{padding:72px 0;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split-sticky{position:static;}
  .timeline::before{left:7px;transform:none;}
  .tl-item{grid-template-columns:28px 1fr;margin-bottom:48px;}
  .tl-dot{grid-column:1;justify-self:start;margin-top:8px;}
  .tl-text,.tl-item:nth-child(even) .tl-text{grid-column:2;padding:0 0 0 8px;}
  .tl-media,.tl-item:nth-child(even) .tl-media{grid-column:2;padding:20px 0 0 8px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .foot-col:last-child{grid-column:1 / -1;}
}
@media (max-width:575.98px){
  body{font-size:15.5px;}
  .content{padding:0 20px;}
  .cat-hero{padding:36px 22px 32px;border-radius:var(--r-card);}
  .cat-hero p{font-size:15px;}
  .section{padding:56px 0;}
  .hero-metrics{flex-direction:column;gap:18px;}
  .hero-metrics .metric{border-right:0;margin:0;padding:0;}
  .cta-strip{padding:26px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%;justify-content:center;}
  .prep-item{grid-template-columns:44px 1fr;gap:14px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;}
  .modal-dialog{margin:0;align-items:flex-end;min-height:100%;}
  .modal-content{border-radius:var(--r-card) var(--r-card) 0 0;}
  .accordion-button{font-size:15px;padding:18px 38px 18px 0;}
  .accordion-body{padding:0 20px 22px 14px;}
}

/* roulang page: category3 */
:root{
  --kai:#17564E;
  --kai-deep:#0E3B36;
  --kai-light:#2E7A6F;
  --kai-wash:#EAF2EF;
  --sand:#D97A3C;
  --sand-light:#F6E4D6;
  --ink:#1B1F1E;
  --txt:#3A4442;
  --mist:#6B7472;
  --line:#E3E7E3;
  --bg:#FBFBF9;
  --block:#F2F4F1;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(23,86,78,.06), 0 12px 32px -12px rgba(23,86,78,.14);
  --sh-hover:0 2px 4px rgba(23,86,78,.09), 0 18px 40px -12px rgba(23,86,78,.2);
  --ease:cubic-bezier(.22,.61,.36,1);
  --rail-w:232px;
  --pad:48px;

  --bs-primary:#17564E;
  --bs-primary-rgb:23,86,78;
  --bs-body-color:#3A4442;
  --bs-body-bg:#FBFBF9;
  --bs-border-color:#E3E7E3;
  --bs-border-radius:14px;
  --bs-border-radius-sm:10px;
  --bs-link-color:#17564E;
  --bs-link-hover-color:#0E3B36;
  --bs-font-sans-serif:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--txt);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--kai);text-decoration:none}
a:hover{color:var(--kai-deep)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0 0 1em}
:focus-visible{outline:2px solid var(--kai);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 布局骨架 ---------- */
.page{margin-left:var(--rail-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1 1 auto}
.content{width:100%;max-width:1240px;margin:0 auto;padding:0 var(--pad)}
.sec{padding:96px 0}
.sec-tight{padding:56px 0}
.sec-head{max-width:720px;margin-bottom:36px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--kai-light);
  font-weight:600;margin-bottom:14px;
}
.sec-title{font-size:clamp(22px,2.4vw,32px);font-weight:700;line-height:1.28;margin-bottom:14px}
.sec-desc{font-size:16px;color:var(--mist);max-width:640px}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 左侧竖栏 ---------- */
.side-rail{
  position:fixed;top:0;left:0;width:var(--rail-w);height:100vh;z-index:1035;
  background:var(--block);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:30px 20px 24px;overflow-y:auto;
}
.rail-brand{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:36px}
.brand-mark{width:38px;height:38px;flex:0 0 38px}
.rail-brand-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.02em;line-height:1.2}
.rail-brand-sub{display:block;font-size:12px;color:var(--mist);letter-spacing:.14em}
.rail-nav{display:flex;flex-direction:column;gap:2px}
.rail-link{
  display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:var(--r-btn);
  color:var(--txt);font-size:14.5px;line-height:1.4;position:relative;
  transition:color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.rail-link .nav-idx{font-size:11.5px;color:var(--mist);letter-spacing:.06em;transition:color .2s var(--ease)}
.rail-link:hover{color:var(--kai);background:#fff;transform:translateX(2px)}
.rail-link.active{background:var(--kai-wash);color:var(--kai);font-weight:600}
.rail-link.active::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--kai)}
.rail-link.active .nav-idx{color:var(--kai)}
.rail-foot{margin-top:auto;padding-top:28px}
.rail-foot p{font-size:12px;color:var(--mist);margin:14px 0 0;line-height:1.6}

/* ---------- 按钮 ---------- */
.btn-sand,.btn-line,.btn-plain{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;line-height:1;
  padding:14px 24px;border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-sand{background:var(--sand);color:#fff;box-shadow:0 1px 2px rgba(217,122,60,.18)}
.btn-sand:hover{background:#C56C31;color:#fff;transform:translateY(-2px)}
.btn-line{background:transparent;border-color:var(--kai);color:var(--kai)}
.btn-line:hover{background:var(--kai-wash);color:var(--kai-deep);transform:translateY(-2px)}
.btn-plain{background:transparent;border:0;color:var(--kai);padding:14px 4px}
.btn-plain:hover{color:var(--kai-deep)}
.btn-block{width:100%}
.btn-rail{padding:12px 16px;font-size:14px;width:100%}
.btn-sand:disabled,.btn-line:disabled,.btn-plain:disabled{opacity:.4;transform:none;cursor:not-allowed}
.link-arrow{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  color:var(--kai);font-weight:600;font-size:14.5px;
}
.link-arrow::before{
  content:"";position:absolute;left:0;right:18px;bottom:-3px;height:1px;background:var(--kai);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.link-arrow::after{content:"→";transition:transform .22s var(--ease)}
.link-arrow:hover::before{transform:scaleX(1)}
.link-arrow:hover::after{transform:translateX(3px)}

/* ---------- 徽章 ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);
  background:var(--sand-light);color:#A85B26;font-size:12px;font-weight:600;
  padding:5px 12px;letter-spacing:.02em;
}
.badge-kai{background:var(--kai-wash);color:var(--kai);border:1px solid rgba(23,86,78,.16)}

/* ---------- 面包屑 ---------- */
.crumb{padding:28px 0 0;font-size:13px;color:var(--mist)}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:#B9C2BF;font-weight:300}
.crumb a{color:var(--mist)}
.crumb a:hover{color:var(--kai)}
.crumb .current{color:#9AA3A1;max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- Hero 条 ---------- */
.hero-band{
  position:relative;margin-top:24px;min-height:264px;display:flex;align-items:center;
  background:
    linear-gradient(104deg,rgba(14,59,54,.95) 0%,rgba(14,59,54,.9) 46%,rgba(23,86,78,.82) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:56px 0;
}
.hero-band .content{position:relative;z-index:2}
.hero-tag{
  display:inline-block;font-size:12px;letter-spacing:.12em;color:#BFD8D2;
  border:1px solid rgba(191,216,210,.4);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:18px;
}
.hero-band h1{
  color:#fff;font-size:clamp(26px,3.2vw,40px);font-weight:800;line-height:1.18;
  letter-spacing:-.02em;margin-bottom:18px;max-width:900px;
}
.hero-lead{color:rgba(255,255,255,.86);font-size:16.5px;line-height:1.9;max-width:760px;margin:0}

/* ---------- 对照表 ---------- */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--r-card);background:#fff}
table.compare{width:100%;min-width:760px;border-collapse:collapse}
.compare caption{text-align:left;font-size:13px;color:var(--mist);padding:16px 24px 0}
.compare th,.compare td{padding:18px 24px;text-align:left;vertical-align:top;font-size:15px;line-height:1.7}
.compare thead th{
  background:var(--kai-wash);color:var(--kai-deep);font-weight:700;font-size:14.5px;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.compare thead th:last-child{background:#E3EEE9}
.compare tbody tr+tr th,.compare tbody tr+tr td{border-top:1px solid var(--line)}
.compare tbody th{font-weight:600;color:var(--ink);width:22%;background:#FCFDFC}
.compare td.old{color:var(--mist)}
.compare td.now{color:var(--kai-deep);font-weight:600}
.table-note{font-size:13.5px;color:var(--mist);margin-top:16px}

/* ---------- 局部富文本 ---------- */
.body-copy{max-width:760px;font-size:16px;line-height:1.9;color:var(--txt)}
.body-copy h3{font-size:18px;font-weight:600;line-height:1.45;margin:1.8em 0 .5em}
.body-copy h3:first-child{margin-top:0}
.body-copy ul{margin:0 0 1.2em;padding-left:1.1em}
.body-copy li{margin-bottom:8px}

/* ---------- 图文卡 ---------- */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.duo-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.duo-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover)}
.duo-media{overflow:hidden;aspect-ratio:16/10;background:var(--block)}
.duo-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.duo-card:hover .duo-media img{transform:scale(1.04)}
.duo-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.duo-body h3{font-size:18px;font-weight:600;line-height:1.45}
.duo-body p{font-size:15px;color:var(--txt);line-height:1.85;margin:0}
.duo-body .link-arrow{margin-top:auto}

/* ---------- 检查清单（2×2） ---------- */
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px 28px}
.check-item{display:flex;gap:16px;padding-left:16px;border-left:2px solid var(--kai)}
.check-item .num{
  font-size:20px;font-weight:800;color:var(--sand);line-height:1.2;min-width:34px;
}
.check-item h3{font-size:17px;font-weight:600;margin-bottom:6px}
.check-item p{font-size:14.5px;color:var(--txt);margin:0;line-height:1.8}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--kai-wash);border-radius:var(--r-card);padding:32px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band .cta-text{max-width:620px}
.cta-band h2{font-size:clamp(19px,2vw,24px);font-weight:700;margin-bottom:8px}
.cta-band p{margin:0;font-size:15px;color:var(--txt)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.accordion{--bs-accordion-border-color:transparent;--bs-accordion-border-width:0;
  --bs-accordion-btn-padding-x:0;--bs-accordion-btn-padding-y:22px;
  --bs-accordion-body-padding-x:0;--bs-accordion-body-padding-y:0;
  --bs-accordion-btn-focus-box-shadow:none;--bs-accordion-active-bg:transparent;
  --bs-accordion-active-color:var(--kai-deep);--bs-accordion-btn-color:var(--ink);
  --bs-accordion-bg:transparent;--bs-accordion-border-radius:0;--bs-accordion-inner-border-radius:0}
.accordion-item{border:0;border-bottom:1px solid var(--line);background:transparent;position:relative}
.accordion-item:first-of-type{border-top:1px solid var(--line)}
.accordion-button{
  font-size:16px;font-weight:600;color:var(--ink);background:transparent;
  padding:22px 44px 22px 0;line-height:1.5;position:relative;
}
.accordion-button::after{
  content:"＋";background-image:none;width:auto;height:auto;
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:17px;font-weight:400;color:var(--kai);line-height:1;
  transition:color .2s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--kai-deep);background:transparent;box-shadow:none;padding-left:18px}
.accordion-button:not(.collapsed)::after{content:"－";color:var(--sand)}
.accordion-button:not(.collapsed)::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;background:var(--kai);
}
.accordion-button:focus{box-shadow:none}
.accordion-body{padding:0 44px 24px 0;font-size:15px;color:var(--txt);line-height:1.85}
.accordion-button:not(.collapsed)+.accordion-collapse .accordion-body{padding-left:18px}

/* ---------- 表单弹层 ---------- */
.modal-content{border:0;border-radius:var(--r-card);box-shadow:var(--sh)}
.modal-header{border-bottom:1px solid var(--line);padding:22px 26px}
.modal-title{font-size:18px;font-weight:700}
.modal-body{padding:24px 26px}
.modal-footer{border-top:1px solid var(--line);padding:18px 26px}
.modal-backdrop.show{opacity:.44}
.form-label{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.form-control,.form-select{
  height:48px;border:1px solid var(--line);border-radius:var(--r-input);
  background:#fff;color:var(--txt);font-size:15px;padding:0 14px;box-shadow:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
textarea.form-control{height:auto;padding:12px 14px;line-height:1.7;resize:vertical}
.form-control:focus,.form-select:focus{
  border-color:var(--kai);box-shadow:0 0 0 4px rgba(23,86,78,.08);
}
.form-check-input{width:18px;height:18px;border-color:#C8D2CF;margin-top:2px}
.form-check-input:checked{background-color:var(--kai);border-color:var(--kai)}
.form-check-input:focus{box-shadow:0 0 0 4px rgba(23,86,78,.08);border-color:var(--kai)}
.form-check-label{font-size:13px;color:var(--mist);line-height:1.7}
.form-text{font-size:13px;color:var(--mist)}
.form-ok{display:none;background:var(--kai-wash);color:var(--kai-deep);border-radius:var(--r-btn);
  padding:12px 16px;font-size:14px;margin-bottom:16px}

/* ---------- 移动端导航 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:1040;
  background:#fff;border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 20px;transition:box-shadow .22s var(--ease);
}
.mobile-bar.scrolled{box-shadow:0 6px 18px -12px rgba(23,86,78,.4)}
.mb-brand{display:flex;align-items:baseline;gap:6px;font-size:17px;font-weight:800;color:var(--ink)}
.mb-brand em{font-style:normal;font-size:12px;font-weight:500;color:var(--mist);letter-spacing:.12em}
.mb-toggle{
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;
}
.mb-toggle span{display:block;width:18px;height:1.5px;background:var(--ink);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.mb-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.mb-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.mb-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}
.drawer-mask{position:fixed;inset:0;background:rgba(27,31,30,.4);z-index:1045;opacity:0;pointer-events:none;transition:opacity .22s var(--ease)}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;width:min(320px,86vw);height:100%;z-index:1050;background:#fff;
  transform:translateX(102%);transition:transform .26s var(--ease);
  display:flex;flex-direction:column;padding:24px 20px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:38px;height:38px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink);font-size:18px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{padding:13px 12px;border-radius:var(--r-btn);color:var(--txt);font-size:15px}
.drawer-nav a:hover{background:var(--block);color:var(--kai)}
.drawer-nav a.active{background:var(--kai-wash);color:var(--kai);font-weight:600}
.drawer-foot{margin-top:auto;padding-top:24px}

/* ---------- 页脚 ---------- */
.site-foot{background:#fff;border-top:1px solid var(--line);margin-top:96px;padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:36px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.brand-name{font-size:16px;font-weight:800;color:var(--ink)}
.foot-col p{font-size:14px;color:var(--mist);line-height:1.8;margin:0;max-width:320px}
.foot-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--ink)}
.foot-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.foot-col li{font-size:14px;color:var(--mist)}
.foot-col a{color:var(--mist)}
.foot-col a:hover{color:var(--kai)}
.foot-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:48px;padding:20px 0 28px;
  font-size:13px;color:var(--mist);
}

/* ---------- 入场动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .22s var(--ease),transform .22s var(--ease)}
.js .reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--rail-w:76px;--pad:32px}
  .side-rail{padding:22px 12px;align-items:center}
  .rail-brand{justify-content:center;margin-bottom:24px}
  .rail-brand-name,.rail-brand-sub{display:none}
  .rail-nav{width:100%;align-items:center}
  .rail-link{justify-content:center;padding:12px 6px;width:100%}
  .rail-link .nav-text{display:none}
  .rail-foot p{display:none}
  .btn-rail{padding:12px 6px;font-size:13px}
}
@media (max-width:991px){
  .page{margin-left:0;padding-top:60px}
  .mobile-bar{display:flex}
  .side-rail{display:none}
  .sec{padding:72px 0}
  .sec-tight{padding:44px 0}
  .hero-band{padding:44px 0;min-height:0}
  .duo{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .site-foot{margin-top:72px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px 24px}
}
@media (max-width:575px){
  :root{--pad:20px}
  .sec{padding:56px 0}
  .hero-band h1{font-size:26px}
  .hero-lead{font-size:15.5px}
  .cta-band{padding:24px}
  .cta-band .btn-sand,.cta-band .btn-line{width:100%}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;gap:8px}
  .compare th,.compare td{padding:14px 16px}
  .modal-dialog{margin:0;position:fixed;left:0;right:0;bottom:0;top:auto;max-width:100%}
  .modal-content{border-radius:var(--r-card) var(--r-card) 0 0}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
}