/* roulang page: index */
:root{
  --brand:#0E5F5A;
  --brand-dark:#093F3C;
  --brand-mist:#DCEBE8;
  --ink:#1B2226;
  --amber:#E8862B;
  --amber-dark:#CC6F1B;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --block:#EFF3F1;
  --line:#E4E2DB;
  --text:#4A5257;
  --muted:#6B7378;
  --success:#2E9C7A;
  --r-btn:12px;
  --r-card:18px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,40,38,.06);
  --sh-2:0 14px 34px -14px rgba(15,40,38,.22);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;border:0;background:none;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,textarea{font-family:inherit}
::selection{background:var(--brand-mist);color:var(--brand-dark)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 28px}}
@media(min-width:1024px){.container{padding:0 32px}}

.section{padding:56px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section-tight{padding:48px 0}
@media(min-width:1024px){.section-tight{padding:72px 0}}
.section-alt{background:var(--block)}

.sec-head{margin-bottom:28px}
@media(min-width:1024px){.sec-head{margin-bottom:40px}}
.sec-head-row{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-mist);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:16px}
.sec-title{font-size:26px;line-height:1.3}
@media(min-width:1024px){.sec-title{font-size:34px}}
.sec-desc{margin-top:12px;font-size:15px;color:var(--muted);max-width:680px}
@media(min-width:1024px){.sec-desc{font-size:16px}}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--paper);border-bottom:1px solid transparent;transition:background .2s ease,border-color .2s ease}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line)}
.nav-wrap{display:flex;align-items:center;gap:18px;height:64px}
@media(min-width:1024px){.nav-wrap{height:72px;gap:28px}}
.brand{display:flex;align-items:center;gap:10px;color:var(--brand);flex-shrink:0}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;background:var(--brand-mist);border-radius:11px;color:var(--brand);flex-shrink:0}
.brand-text{font-size:17px;font-weight:700;white-space:nowrap;letter-spacing:-.02em}
.nav-links{display:none}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:26px;margin-left:6px}
}
.nav-link{position:relative;font-size:15px;color:var(--ink);padding:6px 0;transition:color .18s ease;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
@media(max-width:1023px){.nav-actions .btn{display:none}}
.nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:42px;height:42px;border:1.5px solid var(--brand);border-radius:var(--r-btn);padding:0 10px}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--brand);transition:transform .2s ease,opacity .2s ease}
@media(min-width:1024px){.nav-toggle{display:none}}

.drawer{position:fixed;inset:64px 0 0 0;background:var(--brand);z-index:55;padding:24px 20px 32px;display:flex;flex-direction:column;gap:4px;transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;overflow-y:auto}
.drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto}
@media(min-width:1024px){.drawer{display:none}}
.drawer a{color:rgba(255,255,255,.88);font-size:16px;padding:14px 4px;border-bottom:1px solid rgba(255,255,255,.14)}
.drawer a:hover,.drawer a:focus-visible{color:#fff}
.drawer .drawer-cta{margin-top:auto;background:var(--amber);color:#fff;text-align:center;border-radius:var(--r-btn);font-weight:600;padding:15px;border-bottom:0}
.drawer .drawer-cta:hover{background:var(--amber-dark)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-btn);padding:12px 22px;border:1px solid transparent;transition:transform .18s ease,background .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;white-space:nowrap}
.btn:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.btn-primary{background:var(--amber);color:#fff}
.btn-primary:hover{background:var(--amber-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand-mist)}
.btn-on-dark{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-on-dark:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-ghost{background:transparent;color:var(--brand);padding:8px 4px;font-weight:600}
.btn-ghost:hover{color:var(--brand-dark)}
.btn-ghost i{transition:transform .2s ease}
.btn-ghost:hover i{transform:translateX(3px)}
.btn-lg{padding:14px 28px;font-size:16px}
.btn-block{width:100%}

/* ---------- 标签 / 徽章 ---------- */
.tag{display:inline-flex;align-items:center;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-mist);border-radius:var(--r-pill);padding:3px 12px;line-height:1.6}
.tag-amber{color:#8A4A0B;background:#FBEBD9}
.badge-row{display:flex;flex-wrap:wrap;gap:10px}
.badge{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text);background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px}
.badge b{color:var(--ink);font-weight:700;font-variant-numeric:tabular-nums}

/* ---------- Hero ---------- */
.hero{position:relative;padding:36px 0 52px;background:linear-gradient(180deg,#fff 0%,var(--paper) 100%)}
@media(min-width:1024px){.hero{padding:60px 0 92px}}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(14,95,90,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(14,95,90,.06) 1px,transparent 1px);background-size:52px 52px;-webkit-mask-image:radial-gradient(ellipse at 72% 8%,#000 0%,transparent 68%);mask-image:radial-gradient(ellipse at 72% 8%,#000 0%,transparent 68%)}
.hero-grid{position:relative;display:grid;gap:36px}
@media(min-width:1024px){.hero-grid{grid-template-columns:55fr 45fr;gap:56px;align-items:center}}
.hero h1{font-size:clamp(30px,4.2vw,52px);line-height:1.18;letter-spacing:-.02em;color:var(--ink)}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:20px;font-size:16px;line-height:1.8;color:var(--text);max-width:560px}
@media(min-width:1024px){.hero-sub{font-size:17px}}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.hero-badges{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
.hero-visual{position:relative}
.hero-panel{background:var(--brand-mist);border:1px solid #CFE3DF;border-radius:var(--r-card);padding:14px;box-shadow:var(--sh-1)}
.hero-panel img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-img)}
.hero-float{position:absolute;left:6px;bottom:-18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:12px 16px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink);font-weight:600}
@media(min-width:1024px){.hero-float{left:-22px;bottom:26px}}
.dot-ok{width:9px;height:9px;border-radius:50%;background:var(--success);box-shadow:0 0 0 4px rgba(46,156,122,.16);flex-shrink:0}

/* ---------- 价值点编号条目 ---------- */
.value-list{border-top:1px solid var(--line)}
.value-item{display:grid;grid-template-columns:auto 1fr;gap:20px;padding:26px 0;border-bottom:1px dotted var(--line);align-items:start}
@media(min-width:1024px){.value-item{grid-template-columns:88px 1fr 220px;gap:36px;padding:34px 0;align-items:center}}
.value-num{font-size:15px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;background:var(--brand-mist);border-radius:var(--r-pill);padding:4px 14px;line-height:1.6;justify-self:start}
@media(min-width:1024px){.value-num{font-size:17px}}
.value-title{font-size:19px;margin-bottom:8px}
@media(min-width:1024px){.value-title{font-size:21px}}
.value-text{font-size:15px;color:var(--muted)}
.value-thumb{display:none}
@media(min-width:1024px){.value-thumb{display:block}}
.value-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line)}

/* ---------- 截图轮播 ---------- */
.shots-stage{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:14px;box-shadow:var(--sh-1)}
.shot-slide{display:none;margin:0}
.shot-slide.is-active{display:block}
.shot-slide img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);background:var(--brand-mist)}
.shot-slide figcaption{margin-top:14px;display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text)}
.shot-arrow{position:absolute;top:calc(50% - 40px);width:42px;height:42px;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--brand);display:grid;place-items:center;box-shadow:var(--sh-1);transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease}
.shot-arrow:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:scale(1.04)}
.shot-arrow.prev{left:-14px}
.shot-arrow.next{right:-14px}
@media(max-width:767px){.shot-arrow{display:none}}
.shot-dots{position:absolute;right:26px;bottom:66px;display:flex;gap:7px}
@media(max-width:767px){.shot-dots{position:static;justify-content:center;margin-top:14px}}
.shot-dot{width:8px;height:8px;border-radius:50%;background:#C9D6D3;transition:background .18s ease,transform .18s ease}
.shot-dot.is-active{background:var(--brand);transform:scale(1.25)}
.shot-thumbs{margin-top:16px;display:flex;gap:12px;overflow-x:auto;padding-bottom:6px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.shot-thumb{flex:0 0 128px;scroll-snap-align:start;border:2px solid transparent;border-radius:var(--r-img);overflow:hidden;background:#fff;padding:0;transition:border-color .18s ease,transform .18s ease;line-height:0}
.shot-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot-thumb:hover{transform:translateY(-2px)}
.shot-thumb.is-active{border-color:var(--brand)}

/* ---------- 系统要求 ---------- */
.req-grid{display:grid;gap:20px}
@media(min-width:768px){.req-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.req-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.req-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.req-card:hover{border-color:rgba(14,95,90,.35);box-shadow:var(--sh-2);transform:translateY(-3px)}
.req-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.req-icon{width:42px;height:42px;border-radius:12px;background:var(--brand-mist);color:var(--brand);display:grid;place-items:center;font-size:18px;flex-shrink:0}
.req-name{font-size:18px}
.req-status{margin-left:auto;display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--success);background:rgba(46,156,122,.1);border-radius:var(--r-pill);padding:3px 10px}
.kv{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dotted var(--line);font-size:14px}
.kv:last-child{border-bottom:0;padding-bottom:0}
.kv-k{color:var(--muted);flex-shrink:0}
.kv-v{color:var(--ink);font-weight:600;text-align:right;font-variant-numeric:tabular-nums}

/* ---------- 评价墙 ---------- */
.review-wall{display:grid;gap:20px}
@media(min-width:640px){.review-wall{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.review-wall{grid-template-columns:repeat(3,1fr);gap:24px;padding-bottom:28px}
.review-wall > .review:nth-child(3n+2){transform:translateY(24px)}}
.review{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:16px;transition:border-color .2s ease,box-shadow .2s ease}
.review:hover{border-color:rgba(14,95,90,.3);box-shadow:var(--sh-2)}
.review-quote{font-size:15px;line-height:1.8;color:var(--text)}
.review-foot{display:flex;align-items:center;gap:12px;margin-top:auto}
.avatar{width:40px;height:40px;border-radius:50%;overflow:hidden;background:var(--brand-mist);flex-shrink:0}
.avatar img{width:100%;height:100%;object-fit:cover}
.review-name{font-size:14px;font-weight:700;color:var(--ink)}
.review-role{font-size:12px;color:var(--muted)}
.stars{margin-left:auto;color:var(--amber);font-size:12px;letter-spacing:1px}

/* ---------- 资讯列表（CMS） ---------- */
.post-grid{display:grid;gap:20px}
@media(min-width:640px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.post-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
.post-card:hover{border-color:rgba(14,95,90,.35);box-shadow:var(--sh-2);transform:translateY(-3px)}
.post-cover{display:block;background:var(--brand-mist)}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-title{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title a:hover{color:var(--brand)}
.post-excerpt{font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px}
.post-date{color:var(--muted);font-variant-numeric:tabular-nums}
.post-more{color:var(--brand);font-weight:600}
.post-more:hover{color:var(--brand-dark)}
.post-empty{grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:52px 24px;text-align:center}
.post-empty i{font-size:32px;color:var(--brand-mist)}
.post-empty p{margin:14px 0 18px;color:var(--muted);font-size:15px}

/* ---------- 下载 CTA ---------- */
.download{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);color:#fff;padding:56px 0}
@media(min-width:1024px){.download{padding:88px 0}}
.download::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:46px 46px;pointer-events:none}
.download-inner{position:relative}
.download h2{color:#fff;font-size:26px;line-height:1.3}
@media(min-width:1024px){.download h2{font-size:34px}}
.download .lead{margin-top:12px;color:rgba(255,255,255,.78);font-size:15px}
.plat-grid{margin-top:32px;display:grid;gap:14px}
@media(min-width:640px){.plat-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.plat-grid{grid-template-columns:repeat(5,1fr);gap:16px}}
.plat-btn{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid transparent;border-radius:var(--r-card);padding:14px 16px;text-align:left;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}
.plat-btn:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:var(--sh-2)}
.plat-icon{width:38px;height:38px;border-radius:11px;background:var(--brand-mist);color:var(--brand);display:grid;place-items:center;font-size:17px;flex-shrink:0;transition:background .2s ease}
.plat-btn:hover .plat-icon{background:#CBE2DE}
.plat-name{font-size:15px;font-weight:700;color:var(--ink);line-height:1.3}
.plat-meta{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.dl-note{position:relative;margin-top:26px;font-size:13px;color:rgba(255,255,255,.7);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.dl-note a{color:#fff;text-decoration:underline;text-underline-offset:3px}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;padding:20px 22px;font-size:19px;font-weight:600;color:var(--ink);transition:background .18s ease}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--paper)}
.faq-item summary:focus-visible{outline:2px solid var(--amber);outline-offset:-2px}
.faq-plus{margin-left:auto;width:26px;height:26px;flex-shrink:0;position:relative;color:var(--brand);transition:transform .22s ease,color .22s ease}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-plus::before{left:0;right:0;top:12px;height:2px}
.faq-plus::after{top:0;bottom:0;left:12px;width:2px}
.faq-item[open] .faq-plus{transform:rotate(45deg);color:var(--amber)}
.faq-body{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--text);background:var(--block);margin:0 22px 20px;border-radius:12px;padding-top:16px}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--brand-dark);color:rgba(255,255,255,.7);padding:52px 0 0;overflow:hidden}
.site-footer::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:50px 50px;pointer-events:none}
.footer-grid{position:relative;display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:18px;font-weight:700}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.7);transition:color .18s ease}
.footer-links a:hover{color:#fff}
.footer-bottom{position:relative;margin-top:44px;border-top:1px solid rgba(255,255,255,.14);padding:20px 0;font-size:13px;color:rgba(255,255,255,.6);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}

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

/* roulang page: article */
:root{
  --c-main:#0E5F5A;
  --c-main-dark:#093F3C;
  --c-main-soft:#DCEBE8;
  --c-ink:#1B2226;
  --c-amber:#E8862B;
  --c-amber-dark:#CC6F1B;
  --c-bg:#F7F6F2;
  --c-card:#FFFFFF;
  --c-soft:#EFF3F1;
  --c-line:#E4E2DB;
  --c-text:#4A5257;
  --c-muted:#6B7378;
  --c-ok:#2E9C7A;
  --r-btn:12px;
  --r-card:18px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(15,40,38,.06);
  --sh-2:0 14px 34px -14px rgba(15,40,38,.22);
  --font-cn:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-main);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,transform .18s ease;}
a:hover{color:var(--c-amber-dark);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-amber);outline-offset:2px;border-radius:6px;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 28px;}}
@media(min-width:1024px){.container{padding:0 32px;}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.94);
  backdrop-filter:saturate(160%) blur(6px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);background:rgba(255,255,255,.96);}
.nav-inner{
  display:flex;align-items:center;gap:18px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--c-main);letter-spacing:-.01em;}
.brand:hover{color:var(--c-main);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-main-soft);color:var(--c-main);border:1px solid #CFE3DF;
}
.nav-links{display:none;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 12px;font-size:15px;color:var(--c-ink);border-radius:10px;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--c-main);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-link:hover{color:var(--c-main);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-main);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-actions{display:none;align-items:center;gap:10px;}
.nav-burger{
  margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1.5px solid var(--c-main);background:#fff;color:var(--c-main);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
@media(min-width:1024px){
  .nav-links{display:flex;}
  .nav-actions{display:flex;margin-left:6px;}
  .nav-burger{display:none;}
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--c-amber);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-amber-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-outline{background:#fff;color:var(--c-main);border-color:var(--c-main);}
.btn-outline:hover{background:var(--c-main-soft);color:var(--c-main-dark);}
.btn-ghost{background:transparent;color:var(--c-main);padding:10px 4px;font-weight:600;border-radius:8px;}
.btn-ghost:hover{color:var(--c-amber-dark);}
.btn-sm{padding:9px 16px;font-size:14px;}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;display:none;
}
.drawer.is-open{display:block;}
.drawer-panel{
  position:absolute;inset:0;background:var(--c-main);
  padding:24px 22px;display:flex;flex-direction:column;
  color:#fff;overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.45);background:transparent;color:#fff;cursor:pointer;}
.drawer-nav{display:flex;flex-direction:column;gap:6px;}
.drawer-nav a{color:rgba(255,255,255,.86);padding:14px 12px;border-radius:12px;font-size:16px;}
.drawer-nav a:hover,.drawer-nav a.is-active{background:rgba(255,255,255,.12);color:#fff;}
.drawer-cta{margin-top:auto;padding-top:26px;display:flex;flex-direction:column;gap:12px;}
.drawer-cta .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.drawer-cta .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;}

/* ---------- 通用 ---------- */
.section{padding:56px 0;}
@media(min-width:768px){.section{padding:80px 0;}}
@media(min-width:1024px){.section{padding:96px 0;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--c-main);
  background:var(--c-main-soft);border-radius:999px;padding:6px 14px;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--c-main-soft);color:var(--c-main);
  border-radius:999px;padding:5px 12px;font-size:13px;font-weight:600;
}
.badge-num{font-variant-numeric:tabular-nums;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--c-ok);display:inline-block;}

/* ---------- 面包屑 ---------- */
.crumb{padding-top:24px;font-size:14px;color:var(--c-muted);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#BFC4C1;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-main);}
.crumb .current{color:var(--c-ink);}

/* ---------- 文章头 ---------- */
.article-shell{padding:28px 0 0;}
.post-head{
  max-width:860px;margin:0 auto;padding:24px 0 8px;
}
.post-head h1{
  font-size:clamp(28px,3.6vw,42px);line-height:1.22;letter-spacing:-.02em;
  margin:16px 0 0;
}
.post-lead{
  font-size:18px;line-height:1.8;color:var(--c-muted);margin-top:18px;
}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:22px;padding-top:16px;font-size:13px;color:var(--c-muted);
  border-top:1px dashed var(--c-line);
}
.post-meta span{position:relative;font-variant-numeric:tabular-nums;}
.post-meta span+span::before{content:"";position:absolute;left:-8px;top:50%;width:3px;height:3px;border-radius:50%;background:#C6CBC8;transform:translateY(-50%);}
.post-cover{
  max-width:960px;margin:28px auto 0;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--c-line);background:var(--c-main-soft);box-shadow:var(--sh-1);
  aspect-ratio:16/9;
}
.post-cover img{width:100%;height:100%;object-fit:cover;}

/* ---------- 正文 ---------- */
.post-body{
  max-width:760px;margin:0 auto;padding:40px 0 8px;
  font-size:17px;line-height:1.9;color:var(--c-text);
}
.post-body p{margin:0 0 22px;}
.post-body h2{
  position:relative;font-size:26px;line-height:1.35;margin:40px 0 18px;padding-left:14px;
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-main);
}
.post-body h3{
  position:relative;font-size:20px;line-height:1.4;margin:30px 0 14px;padding-left:18px;
}
.post-body h3::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--c-main);
}
.post-body ul,.post-body ol{margin:0 0 22px;padding-left:1.4em;}
.post-body ul li{list-style:disc;margin:8px 0;}
.post-body ol li{list-style:decimal;margin:8px 0;}
.post-body blockquote{
  margin:0 0 24px;padding:18px 20px;background:var(--c-soft);
  border-left:3px solid var(--c-main);border-radius:0 var(--r-btn) var(--r-btn) 0;color:var(--c-ink);
}
.post-body blockquote p:last-child{margin-bottom:0;}
.post-body img{border-radius:var(--r-img);margin:8px 0 10px;}
.post-body a{color:var(--c-main);border-bottom:1px solid rgba(14,95,90,.35);}
.post-body a:hover{color:var(--c-amber-dark);border-bottom-color:var(--c-amber-dark);}
.post-body table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:15px;}
.post-body th,.post-body td{border:1px solid var(--c-line);padding:10px 12px;text-align:left;}
.post-body th{background:var(--c-soft);color:var(--c-ink);font-weight:600;}
.post-body figure{margin:0 0 24px;}
.post-body figcaption{text-align:center;font-size:13px;color:var(--c-muted);margin-top:8px;}
.post-empty{
  max-width:760px;margin:0 auto;padding:48px 24px;text-align:center;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.post-empty h2{font-size:22px;margin-bottom:10px;}
.post-empty p{color:var(--c-muted);margin-bottom:20px;}

/* ---------- 文末 ---------- */
.post-foot{max-width:760px;margin:0 auto;padding:28px 0 0;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.post-nav{
  display:grid;grid-template-columns:1fr;gap:14px;margin-top:28px;
}
@media(min-width:768px){.post-nav{grid-template-columns:1fr 1fr;}}
.post-nav a{
  display:flex;align-items:center;gap:12px;padding:16px 18px;
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);color:var(--c-ink);font-size:15px;
}
.post-nav a:hover{border-color:rgba(14,95,90,.4);box-shadow:var(--sh-2);transform:translateY(-3px);color:var(--c-main);}
.post-nav .dir{font-size:13px;color:var(--c-muted);display:block;}
.post-nav .ttl{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-weight:600;}

/* ---------- 卡片 ---------- */
.card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,95,90,.35);}
.card-media{
  aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;background:var(--c-main-soft);
}
.card-media img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:18px 20px 20px;}
.card-title{
  font-size:17px;line-height:1.5;font-weight:600;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-excerpt{
  font-size:14px;color:var(--c-muted);margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:14px;padding-top:12px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);font-variant-numeric:tabular-nums;
}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr);}}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  background:linear-gradient(135deg,#0E5F5A 0%,#093F3C 100%);
  color:#fff;padding:40px 24px;
}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.07;pointer-events:none;
  background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);
  background-size:36px 36px;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.3;}
.cta-band p{color:rgba(255,255,255,.78);margin-top:12px;font-size:15px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;position:relative;z-index:2;}
.cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.65);}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.14);color:#fff;}
@media(min-width:768px){.cta-band{padding:56px 48px;}}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-main-dark);color:rgba(255,255,255,.7);margin-top:64px;padding:56px 0 0;position:relative;overflow:hidden;}
.site-footer::before{
  content:"";position:absolute;inset:0;opacity:.06;pointer-events:none;
  background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);
  background-size:44px 44px;
}
.footer-grid{position:relative;display:grid;grid-template-columns:1fr;gap:34px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.22);color:#fff;}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px;}
.footer-title{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(255,255,255,.7);font-size:14px;}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  position:relative;margin-top:40px;padding:20px 20px 26px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
@media(min-width:768px){.footer-bottom{padding-left:28px;padding-right:28px;}}
@media(min-width:1024px){.footer-bottom{padding-left:32px;padding-right:32px;}}

/* roulang page: category1 */
:root{
  --primary:#0E5F5A;
  --primary-dark:#093F3C;
  --mist:#DCEBE8;
  --ink:#1B2226;
  --amber:#E8862B;
  --amber-dark:#CC6F1B;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --soft:#EFF3F1;
  --line:#E4E2DB;
  --text:#4A5257;
  --muted:#6B7378;
  --ok:#2E9C7A;
  --r-btn:12px;
  --r-card:18px;
  --r-img:14px;
  --sh-1:0 1px 2px rgba(15,40,38,.06);
  --sh-2:0 14px 34px -14px rgba(15,40,38,.22);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
a:hover{color:var(--primary-dark)}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;letter-spacing:-0.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:640px){.container{padding:0 28px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,242,.92);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.94)}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
@media(min-width:1024px){.header-inner{height:72px;gap:28px}}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;
  background:var(--mist);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(14,95,90,.14);
}
.brand-text{font-size:17px;font-weight:700;color:var(--primary);letter-spacing:-0.01em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--ink)}
.nav-links{display:none;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 12px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--ink);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.header-actions .btn-outline{display:none}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:#fff;border:1.5px solid var(--primary);color:var(--primary);
}
.menu-toggle:hover{background:var(--mist)}
.menu-toggle svg{width:20px;height:20px}
@media(min-width:1024px){
  .nav-links{display:flex}
  .menu-toggle{display:none}
  .header-actions .btn-outline{display:inline-flex}
}
.mobile-drawer{
  display:none;background:var(--primary);padding:14px 20px 22px;
  border-top:1px solid rgba(255,255,255,.14);
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a.m-drawer-link{
  display:block;padding:13px 4px;color:rgba(255,255,255,.88);
  font-size:16px;border-bottom:1px solid rgba(255,255,255,.14);
}
.mobile-drawer a.m-drawer-link:hover,.mobile-drawer a.m-drawer-link.is-active{color:#fff}
.mobile-drawer .m-cta{margin-top:18px;display:flex;gap:10px;flex-wrap:wrap}
@media(min-width:1024px){.mobile-drawer{display:none !important}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--amber);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--amber-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--mist);color:var(--primary-dark)}
.btn-ghost{background:transparent;color:var(--primary);padding:8px 4px;border-radius:8px}
.btn-ghost:hover{color:var(--amber-dark)}
.btn-ghost::after{content:"→";margin-left:6px;transition:transform .18s ease}
.btn-ghost:hover::after{transform:translateX(3px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-light{background:#fff;color:var(--primary-dark)}
.btn-light:hover{background:#f1f7f5;color:var(--primary-dark);transform:translateY(-1px)}
.btn-light-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-light-outline:hover{background:rgba(255,255,255,.12);color:#fff}

/* ---------- Sections ---------- */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section--tight{padding:40px 0}
@media(min-width:1024px){.section--tight{padding:64px 0}}
.section--soft{background:var(--soft)}
.section--mist{background:var(--mist)}
.section-head{max-width:720px;margin-bottom:28px}
@media(min-width:1024px){.section-head{margin-bottom:44px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary);
  background:var(--mist);border-radius:999px;padding:6px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--amber)}
h1.page-title{font-size:clamp(30px,4.2vw,52px);line-height:1.18;letter-spacing:-0.02em}
h1.page-title .hl{color:var(--primary)}
.h2{font-size:clamp(23px,2.6vw,32px);line-height:1.3}
.h3{font-size:clamp(18px,1.8vw,21px);line-height:1.4;font-weight:600}
.lead{font-size:17px;color:var(--muted);line-height:1.8}

/* ---------- Breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);padding:18px 0 0}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#b9b7ae}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ---------- Hero (compact) ---------- */
.hero-compact{padding:26px 0 8px}
.hero-grid{display:grid;gap:32px;align-items:center}
@media(min-width:1024px){
  .hero-compact{padding:44px 0 12px}
  .hero-grid{grid-template-columns:55% 45%;gap:48px}
}
.hero-copy .lead{margin-top:16px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:7px 14px;font-size:13px;color:var(--muted);
}
.badge strong{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--ok)}
.hero-visual{position:relative}
.hero-panel{
  position:relative;border-radius:var(--r-card);background:var(--mist);
  border:1px solid rgba(14,95,90,.16);padding:16px;overflow:hidden;
}
.hero-panel::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(14,95,90,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(14,95,90,.07) 1px,transparent 1px);
  background-size:28px 28px;pointer-events:none;
}
.hero-panel img{position:relative;border-radius:var(--r-img);aspect-ratio:16/10;object-fit:cover;width:100%;box-shadow:var(--sh-1)}
.status-card{
  position:absolute;left:24px;bottom:24px;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:12px 16px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--ink);font-weight:600;
}
.status-card .dot{width:8px;height:8px;border-radius:50%;background:var(--ok)}
.status-card span.sub{color:var(--muted);font-weight:500;font-variant-numeric:tabular-nums}

/* ---------- Feature rows (图文交替) ---------- */
.feature-row{display:grid;gap:26px;align-items:center;padding:34px 0;border-top:1px dashed var(--line)}
.feature-row:first-child{border-top:none;padding-top:6px}
@media(min-width:1024px){
  .feature-row{grid-template-columns:1fr 1fr;gap:56px;padding:52px 0}
  .feature-row.reverse .feature-media{order:2}
}
.feature-media{position:relative}
.feature-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--sh-1);
}
.feature-media .media-tag{
  position:absolute;top:14px;left:14px;background:rgba(255,255,255,.94);
  border-radius:999px;padding:6px 13px;font-size:13px;font-weight:600;color:var(--primary);
  border:1px solid rgba(14,95,90,.16);
}
.tag{
  display:inline-block;background:var(--mist);color:var(--primary);
  border-radius:999px;padding:6px 13px;font-size:13px;font-weight:600;margin-bottom:14px;
}
.feature-body p{margin-top:14px}
.feature-body .h2{margin-bottom:6px}
.check-list{margin-top:18px;display:grid;gap:10px}
.check-list li{
  position:relative;padding-left:26px;font-size:15px;color:var(--ink);line-height:1.7;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:14px;height:8px;
  border-left:2px solid var(--ok);border-bottom:2px solid var(--ok);
  transform:rotate(-45deg);border-radius:1px;
}

/* ---------- Method cards ---------- */
.method-grid{display:grid;gap:20px;margin-top:8px}
@media(min-width:640px){.method-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.method-grid{grid-template-columns:repeat(3,1fr)}}
.method-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.method-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,95,90,.28)}
.method-card .m-icon{
  width:44px;height:44px;border-radius:12px;background:var(--soft);color:var(--primary);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.method-card .m-icon svg{width:22px;height:22px}
.method-card h3{margin-bottom:8px}
.method-card p{font-size:15px;color:var(--muted)}
.method-card .m-meta{
  margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:10px;
}
.method-card .m-meta b{color:var(--primary);font-variant-numeric:tabular-nums}

/* ---------- Steps ---------- */
.step-grid{display:grid;gap:20px}
@media(min-width:768px){.step-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.step-grid{grid-template-columns:repeat(4,1fr)}}
.step-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1)}
.step-num{
  font-size:26px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;
  letter-spacing:-0.02em;margin-bottom:10px;
}
.step-card h3{font-size:17px;margin-bottom:8px}
.step-card p{font-size:14.5px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-list{margin-top:8px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);background:var(--card)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 44px 20px 4px;position:relative;
  font-size:19px;font-weight:600;color:var(--ink);line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";position:absolute;right:8px;top:50%;width:14px;height:14px;
  margin-top:-7px;border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);
  transform:rotate(45deg);transition:transform .22s ease,border-color .22s ease;
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--amber)}
.faq-item summary:hover{color:var(--primary)}
.faq-answer{
  padding:0 44px 22px 4px;font-size:15px;line-height:1.8;color:var(--text);
  background:linear-gradient(180deg,rgba(220,235,232,.5),rgba(220,235,232,0));
}

/* ---------- Related cards ---------- */
.related-grid{display:grid;gap:20px;margin-top:8px}
@media(min-width:768px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,95,90,.28)}
.rel-card .rel-media{aspect-ratio:16/9;overflow:hidden;background:var(--mist)}
.rel-card .rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rel-card:hover .rel-media img{transform:scale(1.04)}
.rel-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:17px}
.rel-body p{font-size:14.5px;color:var(--muted);flex:1}
.rel-link{font-size:14px;font-weight:600;color:var(--primary)}
.rel-link::after{content:"→";margin-left:6px;transition:transform .18s ease;display:inline-block}
.rel-card:hover .rel-link::after{transform:translateX(3px)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0E5F5A 0%,#093F3C 100%);
  border-radius:22px;padding:38px 24px;color:#fff;
}
@media(min-width:1024px){.cta-band{padding:56px 48px}}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:32px 32px;pointer-events:none;
}
.cta-inner{position:relative;display:grid;gap:24px}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.4fr 1fr;align-items:center}}
.cta-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);line-height:1.3}
.cta-band p{color:rgba(255,255,255,.82);margin-top:12px;font-size:15.5px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(min-width:1024px){.cta-actions{justify-content:flex-end}}

/* ---------- Footer ---------- */
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.75);margin-top:56px;position:relative;overflow:hidden}
@media(min-width:1024px){.site-footer{margin-top:96px}}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:36px 36px;pointer-events:none;
}
.footer-grid{
  position:relative;display:grid;gap:32px;padding-top:52px;padding-bottom:36px;
}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.18)}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:340px}
.footer-title{color:#fff;font-size:15px;font-weight:700;margin-bottom:14px}
.footer-links{display:grid;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:#fff}
.footer-bottom{
  position:relative;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding-top:18px;padding-bottom:26px;border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(255,255,255,.6);
}

/* roulang page: category2 */
:root{
  --brand:#0E5F5A;
  --brand-deep:#093F3C;
  --brand-mist:#DCEBE8;
  --ink:#1B2226;
  --amber:#E8862B;
  --amber-deep:#CC6F1B;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --soft:#EFF3F1;
  --line:#E4E2DB;
  --text:#4A5257;
  --muted:#6B7378;
  --ok:#2E9C7A;
  --r-btn:12px;
  --r-card:18px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,40,38,.06);
  --sh-2:0 14px 34px -14px rgba(15,40,38,.22);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
@media (min-width:640px){.container{padding:0 28px}}
@media (min-width:1024px){.container{padding:0 32px}}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:70;background:rgba(247,246,242,.97);border-bottom:1px solid transparent;transition:background .25s,border-color .25s}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
@media (min-width:1024px){.header-inner{height:72px;gap:26px}}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--brand);letter-spacing:-.01em;white-space:nowrap}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--brand-mist);color:var(--brand);display:grid;place-items:center;flex:none}
.nav-links{display:none;align-items:center;gap:24px;margin-left:10px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{position:relative;padding:6px 0;font-size:15px;color:var(--ink);transition:color .2s}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.nav-link:hover{color:var(--brand)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.desktop-actions{display:none}
@media (min-width:900px){.desktop-actions{display:flex;align-items:center;gap:12px}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);font-weight:600;font-size:15px;padding:11px 20px;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,background .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease}
.btn-primary{background:var(--amber);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{background:var(--amber-deep);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand-mist)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-primary:focus-visible,.btn-outline:focus-visible,.btn-ghost:focus-visible,.menu-toggle:focus-visible,.faq-q:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;background:none;border:0;padding:6px 0;cursor:pointer}
.btn-ghost .arrow{transition:transform .2s ease}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.menu-toggle{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;border:1.5px solid var(--brand);background:#fff;color:var(--brand);cursor:pointer;transition:background .2s ease}
.menu-toggle:hover{background:var(--brand-mist)}
@media (min-width:1024px){.menu-toggle{display:none}}
.mobile-drawer{display:none}
.mobile-drawer.is-open{display:block;background:var(--brand);padding:12px 0 22px}
.mobile-drawer a{display:block;padding:12px 20px;margin:0 12px;border-radius:10px;color:rgba(255,255,255,.88);font-size:16px;transition:background .2s ease,color .2s ease}
.mobile-drawer a:hover,.mobile-drawer a.is-active{color:#fff;background:rgba(255,255,255,.12)}
.mobile-drawer .drawer-cta{margin:14px 20px 0;display:flex;justify-content:center;background:var(--amber);color:#fff;font-weight:600;padding:13px 20px;border-radius:var(--r-btn)}

/* ============ 通用版式 ============ */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:96px 0}}
.section-soft{background:var(--soft)}
.section-line{border-top:1px solid var(--line)}
.section-head{margin-bottom:26px}
@media (min-width:1024px){.section-head{margin-bottom:40px}}
.section-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-mist);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:14px}
.h1{font-size:clamp(28px,4.2vw,50px);line-height:1.18;letter-spacing:-.02em;font-weight:700;color:var(--ink);margin-bottom:18px}
.h1 .hl{color:var(--brand)}
.h2{font-size:clamp(23px,2.6vw,32px);line-height:1.3;letter-spacing:-.01em;font-weight:700;color:var(--ink);margin-bottom:12px}
.h3{font-size:20px;font-weight:600;color:var(--ink);margin-bottom:8px;line-height:1.45}
.lead{font-size:17px;line-height:1.8;color:var(--text);max-width:62ch}
.muted{color:var(--muted);font-size:14px}
.num{font-variant-numeric:tabular-nums}

/* ============ 分类页 Hero ============ */
.hero-cat{padding:32px 0 0}
@media (min-width:1024px){.hero-cat{padding:44px 0 0}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C6C3BA}
.breadcrumb .current{color:var(--ink);font-weight:600}
.hero-banner{position:relative;background:var(--soft);border:1px solid var(--line);border-radius:22px;padding:30px 22px;overflow:hidden}
@media (min-width:1024px){.hero-banner{padding:48px 44px}}
.hero-banner::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(14,95,90,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(14,95,90,.06) 1px,transparent 1px);background-size:34px 34px;pointer-events:none}
.hero-grid{position:relative;z-index:1;display:grid;gap:28px}
@media (min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:center;gap:40px}}
.hero-figure{position:relative;border-radius:var(--r-card);background:var(--brand-mist);padding:12px;box-shadow:var(--sh-1)}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img)}
.hero-float{position:absolute;left:22px;bottom:22px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 14px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink);font-weight:600}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 14px;font-size:13px;color:var(--text);font-variant-numeric:tabular-nums}
.badge strong{color:var(--ink);font-weight:600}
.badge-ok{border-color:rgba(46,156,122,.35);color:var(--ok)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ok);display:inline-block;flex:none}
.tag{display:inline-flex;align-items:center;gap:6px;background:var(--brand-mist);color:var(--brand);border-radius:var(--r-pill);padding:4px 11px;font-size:12.5px;font-weight:600}
.tag-amber{background:rgba(232,134,43,.14);color:var(--amber-deep)}

/* ============ 步骤时间线 + 参数卡 ============ */
.step-layout{display:grid;gap:30px}
@media (min-width:1024px){.step-layout{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:44px;align-items:start}}
.timeline{position:relative}
.timeline::before{content:"";position:absolute;left:19px;top:12px;bottom:16px;width:2px;background:var(--brand-mist)}
.step{position:relative;padding-left:56px;padding-bottom:24px}
.step:last-child{padding-bottom:0}
.step-dot{position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-size:15px;font-weight:700;color:#fff;background:var(--brand);border:4px solid var(--paper);font-variant-numeric:tabular-nums;z-index:1}
.step-alt .step-dot{background:var(--amber)}
.step-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.step-card:hover{border-color:rgba(14,95,90,.3);box-shadow:var(--sh-2);transform:translateY(-3px)}
.step-label{font-size:12.5px;letter-spacing:.08em;color:var(--muted);margin-bottom:6px;font-variant-numeric:tabular-nums}
.step-card p{font-size:15px;line-height:1.8;color:var(--text);margin-top:6px}
.spec-col{display:block}
@media (min-width:1024px){.spec-col{position:sticky;top:92px}}
.spec-grid{display:grid;gap:18px}
@media (min-width:640px) and (max-width:1023px){.spec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.spec-card:hover{border-color:rgba(14,95,90,.28);box-shadow:var(--sh-2);transform:translateY(-3px)}
.spec-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.spec-ico{width:34px;height:34px;border-radius:10px;background:var(--brand-mist);color:var(--brand);display:grid;place-items:center;flex:none}
.spec-title{font-size:15px;font-weight:700;color:var(--ink)}
.spec-row{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.spec-row:last-child{border-bottom:0;padding-bottom:0}
.spec-key{color:var(--muted);flex:none}
.spec-val{color:var(--ink);font-weight:500;text-align:right;font-variant-numeric:tabular-nums}

/* ============ 平台封面墙 ============ */
.wall-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-bottom:20px}
.wall-nav{display:none;gap:10px}
@media (min-width:768px){.wall-nav{display:flex}}
.wall-btn{width:42px;height:42px;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--brand);display:grid;place-items:center;cursor:pointer;transition:border-color .2s ease,background .2s ease,transform .2s ease}
.wall-btn:hover{border-color:var(--brand);background:var(--brand-mist);transform:translateY(-1px)}
.wall{display:flex;gap:18px;overflow-x:auto;padding:4px 2px 18px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
.wall::-webkit-scrollbar{height:6px}
.wall::-webkit-scrollbar-thumb{background:#D6D3CB;border-radius:6px}
.platform-card{flex:0 0 270px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.platform-card:hover{border-color:rgba(14,95,90,.3);box-shadow:var(--sh-2);transform:translateY(-3px)}
.platform-media{position:relative;aspect-ratio:16/9;background:var(--brand-mist);overflow:hidden}
.platform-media img{width:100%;height:100%;object-fit:cover}
.platform-media .tag{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94)}
.platform-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.platform-name{display:flex;align-items:center;gap:8px;font-size:17px;font-weight:600;color:var(--ink)}
.platform-meta{font-size:13px;color:var(--muted);line-height:1.7;font-variant-numeric:tabular-nums}
.platform-body .btn{margin-top:auto;width:100%}

/* ============ 能力矩阵 + 清单 ============ */
.matrix-grid{display:grid;gap:18px}
@media (min-width:768px){.matrix-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.matrix-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease}
.matrix-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.matrix-card.accent-brand{border-left:4px solid var(--brand);border-radius:4px 14px 14px 4px}
.matrix-card.accent-amber{border-left:4px solid var(--amber);border-radius:4px 14px 14px 4px}
.matrix-card.accent-ink{border-left:4px solid var(--ink);border-radius:4px 14px 14px 4px}
.matrix-card p{font-size:15px;line-height:1.8;margin-top:6px}
.check-list{display:grid;gap:12px;margin-top:26px}
@media (min-width:768px){.check-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
.check-item{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;font-size:15px;color:var(--text);transition:border-color .2s ease,transform .2s ease}
.check-item:hover{border-color:rgba(46,156,122,.5);transform:translateY(-2px)}
.check-item svg{flex:none;color:var(--ok);margin-top:4px}

/* ============ FAQ ============ */
.faq-grid{display:grid}
@media (min-width:1024px){.faq-grid{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:32px}}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 2px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);cursor:pointer;transition:color .2s ease}
.faq-q:hover{color:var(--brand)}
.faq-icon{flex:none;width:22px;height:22px;color:var(--brand);transition:transform .25s ease,color .25s ease}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--amber)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.is-open .faq-a{max-height:460px}
.faq-a p{padding:12px 14px;margin-bottom:18px;background:var(--soft);border-radius:12px;font-size:15px;line-height:1.85;color:var(--text)}

/* ============ CTA ============ */
.cta-band{position:relative;background:linear-gradient(150deg,var(--brand) 0%,var(--brand-deep) 100%);border-radius:22px;padding:34px 24px;color:#fff;overflow:hidden}
@media (min-width:1024px){.cta-band{padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:40px}}
.cta-band::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:36px 36px;pointer-events:none}
.cta-band > *{position:relative;z-index:1}
.cta-band .h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.8);font-size:15px;margin-top:8px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
@media (min-width:1024px){.cta-actions{margin-top:0;flex:none}}
.link-plain{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:600;font-size:15px;transition:gap .2s ease}
.link-plain:hover{gap:12px}
.back-row{margin-top:26px;display:flex;justify-content:center}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--brand-deep);color:rgba(255,255,255,.72);padding-top:52px;overflow:hidden}
.site-footer::before{content:"";position:absolute;right:-80px;top:-60px;width:340px;height:340px;border-radius:50%;border:1px solid rgba(255,255,255,.08);box-shadow:0 0 0 40px rgba(255,255,255,.02) inset;pointer-events:none}
.footer-grid{position:relative;display:grid;gap:32px;padding-bottom:40px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1.1fr 1.1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:14px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff}
.footer-desc{font-size:14px;line-height:1.85;max-width:34ch;color:rgba(255,255,255,.72)}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.7);transition:color .2s ease}
.footer-links a:hover{color:#fff}
.container.footer-bottom{position:relative;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;border-top:1px solid rgba(255,255,255,.14);padding-top:18px;padding-bottom:26px;font-size:13px;color:rgba(255,255,255,.6)}

@media (max-width:520px){
  .h1{font-size:27px}
  .hero-banner{padding:26px 18px}
  .step{padding-left:48px}
  .step-dot{width:36px;height:36px;font-size:14px}
  .timeline::before{left:17px}
  .btn{width:100%}
  .wall-nav{display:none}
  .badge{font-size:12.5px}
}

/* roulang page: category3 */
:root{
    --brand:#0E5F5A;
    --brand-dark:#093F3C;
    --mist:#DCEBE8;
    --ink:#1B2226;
    --amber:#E8862B;
    --amber-dark:#CC6F1B;
    --paper:#F7F6F2;
    --card:#FFFFFF;
    --soft:#EFF3F1;
    --line:#E4E2DB;
    --text:#4A5257;
    --muted:#6B7378;
    --ok:#2E9C7A;
    --r-btn:12px;
    --r-card:18px;
    --r-img:14px;
    --sh-1:0 1px 2px rgba(15,40,38,.06);
    --sh-2:0 14px 34px -14px rgba(15,40,38,.22);
    --font:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:var(--font);
    font-size:16px;
    line-height:1.75;
    color:var(--text);
    background:var(--paper);
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul{padding:0;list-style:none}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%;height:auto}
  button{font-family:inherit;cursor:pointer}
  :focus-visible{outline:2px solid var(--amber);outline-offset:2px;border-radius:6px}
  .num{font-variant-numeric:tabular-nums}

  .container{max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:640px){.container{padding:0 28px}}
  @media (min-width:1024px){.container{padding:0 32px}}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(247,246,242,.94);
    backdrop-filter:blur(8px);
    border-bottom:1px solid transparent;
    transition:border-color .25s ease,background .25s ease;
  }
  .site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(255,255,255,.95)}
  .header-inner{display:flex;align-items:center;gap:18px;min-height:72px}
  .brand{display:flex;align-items:center;gap:10px;flex:none}
  .brand-mark{
    width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
    background:var(--mist);color:var(--brand);border:1px solid rgba(14,95,90,.16);
    transition:background .22s ease,color .22s ease;
  }
  .brand:hover .brand-mark{background:var(--brand);color:#fff}
  .brand-text{font-size:17px;font-weight:700;color:var(--brand);letter-spacing:.01em}
  .nav-links{display:flex;align-items:center;gap:26px;margin:0 auto;overflow-x:auto;scrollbar-width:none}
  .nav-links::-webkit-scrollbar{display:none}
  .nav-link{
    position:relative;flex:none;font-size:15px;color:var(--ink);
    padding:6px 0;white-space:nowrap;transition:color .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
  }
  .nav-link:hover{color:var(--brand)}
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--brand);font-weight:600}
  .nav-link.is-active::after{transform:scaleX(1)}
  .nav-actions{display:flex;align-items:center;gap:10px;flex:none}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;line-height:1;padding:13px 22px;
    border-radius:var(--r-btn);border:1px solid transparent;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .18s ease,box-shadow .2s ease;
  }
  .btn-amber{background:var(--amber);color:#fff;box-shadow:var(--sh-1)}
  .btn-amber:hover{background:var(--amber-dark);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-amber:active{transform:translateY(1px);box-shadow:none}
  .btn-outline{background:#fff;color:var(--brand);border-color:var(--brand);border-width:1.5px}
  .btn-outline:hover{background:var(--mist)}
  .btn-soft{background:var(--soft);color:var(--brand);border-color:var(--line)}
  .btn-soft:hover{background:var(--mist)}
  .btn-ghost{color:var(--brand);padding:10px 4px;font-weight:600}
  .btn-ghost::after{content:"→";margin-left:6px;transition:transform .2s ease;display:inline-block}
  .btn-ghost:hover::after{transform:translateX(4px)}
  .btn-sm{padding:10px 18px;font-size:14px}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted);padding:22px 0 0}
  .breadcrumb a{color:var(--muted);transition:color .2s ease}
  .breadcrumb a:hover{color:var(--brand)}
  .breadcrumb .sep{color:#C4C2B9}
  .breadcrumb .current{color:var(--ink);font-weight:600}

  /* ---------- Hero ---------- */
  .hero{position:relative;padding:26px 0 12px}
  .hero-panel{
    display:grid;gap:28px;align-items:center;
    background:linear-gradient(180deg,#FFFFFF 0%,#F4F8F7 100%);
    border:1px solid var(--line);border-radius:24px;
    padding:26px 22px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
  }
  .hero-panel::before{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(14,95,90,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(14,95,90,.06) 1px,transparent 1px);
    background-size:28px 28px;pointer-events:none;
    mask-image:linear-gradient(120deg,rgba(0,0,0,.5),transparent 62%);
    -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.5),transparent 62%);
  }
  .hero-copy{position:relative;z-index:1}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
    color:var(--brand);background:var(--mist);border-radius:999px;padding:6px 14px;
  }
  .eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--ok)}
  .hero h1{
    margin-top:16px;
    font-size:clamp(30px,4.2vw,48px);font-weight:700;line-height:1.18;letter-spacing:-.02em;color:var(--ink);
  }
  .hero h1 .hl{color:var(--brand)}
  .hero-sub{margin-top:16px;font-size:17px;color:var(--text);max-width:640px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
  .badge{
    display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--brand);
    background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 13px;
  }
  .badge b{font-weight:700;font-variant-numeric:tabular-nums}
  .hero-media{position:relative;z-index:1}
  .hero-media .frame{
    border-radius:var(--r-card);background:var(--mist);padding:12px;border:1px solid rgba(14,95,90,.12);
  }
  .hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img)}

  @media (min-width:1024px){
    .hero-panel{grid-template-columns:55% 45%;gap:36px;padding:40px 40px}
  }

  /* ---------- 概览条 ---------- */
  .overview{padding:34px 0 8px}
  .overview-grid{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
  @media (min-width:900px){.overview-grid{grid-template-columns:repeat(4,1fr);gap:20px}}
  .ov-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    padding:20px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .ov-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,95,90,.28)}
  .ov-num{font-size:28px;font-weight:700;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
  .ov-label{margin-top:6px;font-size:14px;color:var(--muted)}

  /* ---------- 通用板块 ---------- */
  .section{padding:56px 0 0}
  @media (min-width:1024px){.section{padding:96px 0 0}}
  .sec-head{max-width:760px;margin-bottom:28px}
  .sec-head h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.3;color:var(--ink);letter-spacing:-.01em}
  .sec-head p{margin-top:12px;color:var(--text)}
  .tag{
    display:inline-block;font-size:13px;color:var(--brand);background:var(--mist);
    border-radius:999px;padding:5px 12px;font-weight:600;
  }

  /* ---------- 三步自查 ---------- */
  .steps{display:grid;gap:20px}
  @media (min-width:900px){.steps{grid-template-columns:repeat(3,1fr)}}
  .step-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,95,90,.28)}
  .step-card figure{margin:0;background:var(--soft)}
  .step-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0}
  .step-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .step-idx{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--amber);
    font-variant-numeric:tabular-nums;letter-spacing:.06em;
  }
  .step-body h3{font-size:19px;font-weight:600;color:var(--ink);line-height:1.4}
  .step-body p{font-size:15px;color:var(--text)}
  .dotline{border:0;border-top:1px dashed var(--line);margin:4px 0}

  /* ---------- 目录 + 问答 ---------- */
  .qa-layout{display:grid;gap:28px}
  @media (min-width:1024px){
    .qa-layout{grid-template-columns:280px minmax(0,1fr);gap:48px;align-items:start}
  }
  .toc{background:transparent}
  .toc-title{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.12em;margin-bottom:14px}
  .toc-nav{display:flex;gap:10px;overflow-x:auto;padding-bottom:8px;scrollbar-width:none}
  .toc-nav::-webkit-scrollbar{display:none}
  .toc-link{
    flex:none;display:block;font-size:14px;color:var(--text);background:#fff;
    border:1px solid var(--line);border-radius:999px;padding:9px 16px;
    transition:color .2s ease,background .2s ease,border-color .2s ease;
  }
  .toc-link:hover{color:var(--brand);border-color:rgba(14,95,90,.35)}
  .toc-link.is-active{background:var(--mist);color:var(--brand);border-color:rgba(14,95,90,.35);font-weight:600}
  @media (min-width:1024px){
    .toc{position:sticky;top:96px}
    .toc-nav{flex-direction:column;gap:2px;overflow:visible;padding-bottom:0}
    .toc-link{
      border:0;border-radius:0;background:transparent;padding:10px 12px 10px 16px;
      border-left:2px solid var(--line);
    }
    .toc-link:hover{background:var(--soft);border-left-color:rgba(14,95,90,.4)}
    .toc-link.is-active{background:var(--mist);border-left-color:var(--brand)}
  }
  .toc-note{
    display:none;
    margin-top:22px;padding:18px;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1);
  }
  @media (min-width:1024px){.toc-note{display:block}}
  .toc-note p{font-size:14px;color:var(--muted)}
  .toc-note a{display:inline-block;margin-top:10px;font-size:14px;font-weight:600;color:var(--brand)}
  .toc-note a:hover{color:var(--amber-dark)}

  .qa-group{padding-top:8px;scroll-margin-top:110px}
  .qa-group + .qa-group{margin-top:52px}
  .qa-group h2{
    font-size:clamp(22px,2.6vw,28px);font-weight:700;color:var(--ink);line-height:1.35;
    padding-left:16px;border-left:4px solid var(--brand);
  }
  .qa-group > p.lead{margin-top:14px;color:var(--text);font-size:15px}
  .qa-list{margin-top:22px;display:grid;gap:14px}
  .qa-item{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--sh-1);overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .qa-item:hover{border-color:rgba(14,95,90,.28)}
  .qa-item[open]{box-shadow:var(--sh-2)}
  details.qa-details{border-radius:var(--r-card)}
  .qa-summary{
    display:flex;align-items:flex-start;gap:14px;padding:20px 22px;cursor:pointer;
    list-style:none;font-size:19px;font-weight:600;color:var(--ink);line-height:1.5;
  }
  .qa-summary::-webkit-details-marker{display:none}
  .qa-num{
    flex:none;font-size:13px;font-weight:700;color:var(--brand);background:var(--mist);
    border-radius:8px;padding:4px 8px;margin-top:5px;font-variant-numeric:tabular-nums;
  }
  .qa-icon{position:relative;flex:none;width:22px;height:22px;margin-left:auto;margin-top:6px}
  .qa-icon::before,.qa-icon::after{
    content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .25s ease,background .25s ease;
  }
  .qa-icon::before{left:50%;top:5px;width:2px;height:12px;transform:translateX(-50%)}
  .qa-icon::after{top:50%;left:5px;width:12px;height:2px;transform:translateY(-50%)}
  details[open] .qa-icon::before{transform:translateX(-50%) rotate(90deg);background:var(--amber)}
  details[open] .qa-icon::after{background:var(--amber)}
  .qa-body{
    padding:0 22px 22px 58px;font-size:15px;line-height:1.8;color:var(--text);
    border-top:1px dashed var(--line);background:linear-gradient(180deg,rgba(239,243,241,.7),rgba(255,255,255,0));
  }
  .qa-body p{padding-top:16px}
  .qa-body ul{margin-top:12px;display:grid;gap:8px}
  .qa-body li{position:relative;padding-left:18px}
  .qa-body li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--ok)}
  .qa-tools{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

  /* ---------- 相关分类 ---------- */
  .rel-grid{display:grid;gap:20px}
  @media (min-width:900px){.rel-grid{grid-template-columns:repeat(3,1fr)}}
  .rel-card{
    display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(14,95,90,.28)}
  .rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
  .rel-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .rel-body h3{font-size:19px;font-weight:600;color:var(--ink)}
  .rel-body p{font-size:15px;color:var(--text)}
  .rel-foot{margin-top:auto;padding-top:8px;font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
  .rel-foot span{transition:transform .2s ease;display:inline-block}
  .rel-card:hover .rel-foot span{transform:translateX(4px)}

  /* ---------- CTA ---------- */
  .cta-section{padding:56px 0 0}
  @media (min-width:1024px){.cta-section{padding:96px 0 0}}
  .cta-band{
    position:relative;overflow:hidden;border-radius:24px;
    background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);
    color:#fff;padding:34px 24px;
  }
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
    background-size:26px 26px;pointer-events:none;
    mask-image:radial-gradient(circle at 78% 20%,rgba(0,0,0,.85),transparent 70%);
    -webkit-mask-image:radial-gradient(circle at 78% 20%,rgba(0,0,0,.85),transparent 70%);
  }
  .cta-inner{position:relative;display:grid;gap:22px;align-items:center}
  @media (min-width:900px){.cta-inner{grid-template-columns:1fr auto;gap:32px}}
  .cta-band h2{font-size:clamp(23px,2.8vw,30px);font-weight:700;line-height:1.35}
  .cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.82);max-width:620px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  .cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
  .cta-band .btn-outline:hover{background:rgba(255,255,255,.14);border-color:#fff}
  .cta-note{position:relative;margin-top:16px;font-size:13px;color:rgba(255,255,255,.72)}
  .cta-note a{color:#fff;text-decoration:underline;text-underline-offset:3px}
  .back-home{display:inline-flex;align-items:center;gap:8px;margin-top:22px;font-size:14px;font-weight:600;color:var(--brand)}
  .back-home:hover{color:var(--amber-dark)}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:72px;background:var(--brand-dark);color:rgba(255,255,255,.7);
    position:relative;overflow:hidden;
  }
  .site-footer::before{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
    background-size:32px 32px;pointer-events:none;
  }
  .footer-grid{position:relative;display:grid;gap:32px;padding:52px 20px 34px}
  @media (min-width:640px){.footer-grid{padding:56px 28px 34px}}
  @media (min-width:900px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding:64px 32px 40px}}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700}
  .footer-brand .brand-mark{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.18);color:#fff}
  .footer-desc{margin-top:14px;font-size:14px;line-height:1.8;max-width:340px;color:rgba(255,255,255,.7)}
  .footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
  .footer-links{display:grid;gap:11px}
  .footer-links a{font-size:14px;color:rgba(255,255,255,.7);transition:color .2s ease,transform .2s ease}
  .footer-links a:hover{color:#fff}
  .footer-bottom{
    position:relative;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
    padding:20px;border-top:1px solid rgba(255,255,255,.14);font-size:13px;color:rgba(255,255,255,.6);
  }
  @media (min-width:640px){.footer-bottom{padding:20px 28px}}
  @media (min-width:1024px){.footer-bottom{padding:20px 32px}}

  @media (max-width:899px){
    .header-inner{flex-wrap:wrap;padding:10px 0;min-height:64px}
    .nav-links{order:3;width:100%;margin:0;gap:20px;padding-bottom:6px}
    .nav-actions{margin-left:auto}
    .nav-actions .btn{padding:11px 16px;font-size:14px}
    .hero h1{font-size:clamp(28px,7.4vw,38px)}
  }
  @media (max-width:560px){
    .nav-actions .btn-outline{display:none}
    .badge-row{gap:8px}
    .qa-summary{padding:18px;font-size:17px;gap:10px}
    .qa-body{padding:0 18px 20px 18px}
    .cta-band{padding:28px 20px;border-radius:20px}
  }