/* roulang page: index */
:root{
  --brand-900:#0B2E27;
  --brand-700:#0F5A45;
  --brand-500:#0FA678;
  --brand-300:#7FD9B8;
  --grad-brand:linear-gradient(135deg,#0B2E27 0%,#0F7A5A 55%,#19C08A 100%);
  --action:#FF6B2C;
  --action-hover:#F2551A;
  --grad-action:linear-gradient(135deg,#FF7A3D,#F04E12);
  --accent:#FFC53D;
  --bg:#F4F7F4;
  --surface:#FFFFFF;
  --line:#E2EAE4;
  --ink:#14201C;
  --ink-2:#55665F;
  --ok:#17A673;
  --warn:#E8A33D;
  --sh1:0 1px 2px rgba(11,46,39,.06);
  --sh2:0 10px 30px -12px rgba(11,46,39,.18);
  --sh3:0 20px 48px -18px rgba(11,46,39,.30);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  text-align:left;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease,text-underline-offset .2s ease}
a:hover{color:var(--brand-700)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}

.container{max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}

.section{padding:48px 0}
@media(min-width:1024px){.section{padding:80px 0}}
.section-tight{padding:48px 0 0}
.after-hero{margin-top:48px}
@media(min-width:1024px){.after-hero{margin-top:96px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-900);color:#fff;font-size:12.5px;line-height:34px;height:34px;overflow:hidden}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;height:34px}
.topbar-domain{color:rgba(255,255,255,.72);white-space:nowrap;letter-spacing:.02em}
.topbar-mid{flex:1;text-align:center;color:rgba(255,255,255,.9);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-mid b{color:var(--accent);font-weight:600}
.topbar-actions{display:flex;align-items:center;gap:16px;white-space:nowrap}
.topbar-actions a{color:#fff;font-size:12.5px}
.topbar-actions a:hover{color:var(--accent)}
@media(max-width:900px){.topbar-mid{display:none}}
@media(max-width:520px){.topbar-actions span.hide-sm{display:none}}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-stuck{box-shadow:var(--sh2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--grad-brand);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:15px;letter-spacing:.5px;box-shadow:var(--sh1);flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-main{font-size:16.5px;font-weight:800;letter-spacing:.01em}
.brand-sub{font-size:11.5px;color:var(--ink-2);letter-spacing:.06em}
.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:10px;color:var(--ink);font-size:14.5px;position:relative}
.nav-menu a:hover{color:var(--brand-500);background:rgba(15,166,120,.06)}
.nav-menu a.active{color:var(--brand-500);font-weight:600}
.nav-menu a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-500)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
@media(max-width:1024px){
  .nav-menu{display:none}
  .nav-toggle{display:inline-flex}
  .nav-right .btn-desktop{display:none}
}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(11,46,39,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;background:#fff;z-index:80;transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;box-shadow:var(--sh3)}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--ink-2)}
.drawer-nav{padding:8px 12px;flex:1;overflow-y:auto}
.drawer-nav a{display:flex;align-items:center;height:44px;padding:0 12px;border-radius:10px;color:var(--ink);font-size:15px}
.drawer-nav a:hover{background:rgba(15,166,120,.08);color:var(--brand-500)}
.drawer-nav a.active{color:var(--brand-500);font-weight:600}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--r-sm);font-size:15px;font-weight:600;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;white-space:nowrap}
.btn-primary{background:var(--grad-action);color:#fff;box-shadow:var(--sh2)}
.btn-primary:hover{background:var(--action-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh3)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-500);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-500);font-weight:600;font-size:14.5px}
.btn-link .arrow{transition:transform .2s ease;display:inline-block}
.btn-link:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}
.btn-link:hover .arrow{transform:translateX(3px)}
.icon-btn{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;display:inline-flex;align-items:center;justify-content:center;color:var(--ink);transition:border-color .2s ease,color .2s ease,transform .2s ease}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-500)}
.icon-btn:active{transform:scale(.96)}
.icon-btn[disabled]{opacity:.4;cursor:not-allowed}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:999px;font-size:12.5px;line-height:1;background:rgba(127,217,184,.24);border:1px solid rgba(15,166,120,.22);color:var(--brand-700)}
.badge b{font-weight:700;color:var(--brand-900)}
.badge-accent{background:rgba(255,197,61,.18);border-color:rgba(255,197,61,.45);color:#8A6100}
.badge-dark{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.22);color:#EAF6F0}
.badge-row{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--grad-brand);color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}
.hero::after{content:"";position:absolute;right:-160px;bottom:-260px;width:620px;height:620px;border-radius:50%;border:2px dashed rgba(255,255,255,.14);pointer-events:none}
.hero-inner{position:relative;z-index:2;display:grid;gap:40px;padding:48px 0 56px}
@media(min-width:1024px){.hero-inner{grid-template-columns:1.05fr .95fr;align-items:center;gap:56px;padding:72px 0 84px}}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);font-size:12.5px;letter-spacing:.04em;color:#E9FBF3}
.hero h1{font-size:30px;line-height:1.3;font-weight:800;margin-top:18px;letter-spacing:.01em}
@media(min-width:768px){.hero h1{font-size:36px}}
@media(min-width:1024px){.hero h1{font-size:40px;line-height:1.25}}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.86);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-cta .btn-ghost{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.28);color:#fff}
.hero-cta .btn-ghost:hover{background:rgba(255,255,255,.18);border-color:#fff;color:#fff}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.hero-visual{position:relative}
.hero-card{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid rgba(255,255,255,.16);background:rgba(11,46,39,.35);box-shadow:var(--sh3)}
.hero-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.hero-phone{position:absolute;right:14px;bottom:-14px;width:41%;max-width:210px;border:6px solid #fff;border-radius:22px;overflow:hidden;transform:rotate(-2deg);box-shadow:var(--sh3);background:#fff}
.hero-phone img{width:100%;aspect-ratio:9/19.5;object-fit:cover}
.hero-float{position:absolute;left:-10px;top:22px;background:#fff;color:var(--ink);border-radius:999px;padding:8px 14px;font-size:12.5px;font-weight:600;box-shadow:var(--sh2);display:flex;align-items:center;gap:8px}
.hero-float b{color:var(--action);font-size:15px}
@media(max-width:640px){
  .hero-phone{right:8px;bottom:-8px;width:44%}
  .hero-float{left:6px;top:12px;font-size:12px}
}

/* ---------- 数据徽章条 ---------- */
.statbar{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh1);padding:20px 22px;display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media(min-width:768px){.statbar{grid-template-columns:repeat(3,minmax(0,1fr));padding:24px 28px}}
@media(min-width:1024px){.statbar{grid-template-columns:repeat(5,minmax(0,1fr))}}
.stat-item{display:flex;flex-direction:column;gap:4px;padding-left:14px;border-left:2px solid rgba(15,166,120,.25)}
.stat-label{font-size:12.5px;color:var(--ink-2);letter-spacing:.02em}
.stat-value{font-size:19px;font-weight:800;color:var(--brand-900)}

/* ---------- 板块标题 ---------- */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.section-title{position:relative;font-size:23px;line-height:1.3;font-weight:700;padding-left:14px}
@media(min-width:1024px){.section-title{font-size:30px}}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand-500)}
.section-desc{margin-top:10px;font-size:14.5px;color:var(--ink-2);max-width:640px}

/* ---------- 价值区 ---------- */
.value-grid{display:grid;gap:28px}
@media(min-width:1024px){.value-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:0}}
.value-item{padding:0 0 0 0}
@media(min-width:1024px){
  .value-item{padding:0 30px}
  .value-item+.value-item{border-left:1px dashed #CBDCCF}
  .value-item:first-child{padding-left:0}
  .value-item:last-child{padding-right:0}
}
.value-num{font-size:34px;font-weight:800;color:var(--brand-300);line-height:1}
.value-title{margin-top:12px;font-size:19px;font-weight:700;color:var(--ink)}
.value-text{margin-top:10px;font-size:15px;color:var(--ink-2)}

/* ---------- 截图轮播 ---------- */
.reel-wrap{position:relative}
.reel{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 8px;scrollbar-width:none}
.reel::-webkit-scrollbar{display:none}
.shot{flex:0 0 76%;scroll-snap-align:start;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh1);overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.shot:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh2)}
.shot-media{background:linear-gradient(135deg,rgba(11,46,39,.06),rgba(25,192,138,.10));aspect-ratio:3/2;overflow:hidden}
.shot-media img{width:100%;height:100%;object-fit:cover}
.shot-body{padding:16px 18px 18px}
.shot-index{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:26px;padding:0 9px;border-radius:999px;background:rgba(255,197,61,.20);color:#8A6100;font-size:12.5px;font-weight:700}
.shot-title{margin-top:10px;font-size:16px;font-weight:600}
.shot-text{margin-top:6px;font-size:13.5px;color:var(--ink-2)}
@media(min-width:768px){.shot{flex:0 0 40%}}
@media(min-width:1024px){.shot{flex:0 0 calc(25% - 15px)}}
@media(min-width:1280px){.shot{flex:0 0 calc(25% - 15px)}}
.reel-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:18px}
.reel-dots{display:flex;gap:7px}
.reel-dots button{width:8px;height:8px;border-radius:999px;background:#CFDDD5;transition:background .2s ease,width .2s ease}
.reel-dots button.active{background:var(--brand-500);width:22px}
.reel-arrows{display:flex;gap:10px}

/* ---------- 系统要求 ---------- */
.req-grid{display:grid;gap:20px}
@media(min-width:1024px){.req-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}}
.req-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh1);padding:22px;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.req-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh2)}
.req-head{display:flex;align-items:center;gap:12px}
.req-icon{width:40px;height:40px;border-radius:12px;background:rgba(15,166,120,.10);color:var(--brand-700);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;flex:0 0 auto}
.req-title{font-size:18px;font-weight:700}
.req-tag{font-size:12.5px;color:var(--ink-2)}
.req-list{margin-top:18px;display:flex;flex-direction:column;gap:2px;flex:1}
.req-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.req-row:last-child{border-bottom:0}
.req-row span:first-child{color:var(--ink-2)}
.req-row span:last-child{font-weight:600}
.req-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}

/* ---------- 评价墙 ---------- */
.review-grid{display:grid;gap:20px}
@media(min-width:768px){.review-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.review-grid{grid-template-columns:repeat(3,minmax(0,1fr));align-items:start}}
.review-col{display:flex;flex-direction:column;gap:20px}
.review-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh1);padding:20px;transition:border-color .25s ease,box-shadow .25s ease}
.review-card:hover{border-color:var(--brand-500);box-shadow:var(--sh2)}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{width:42px;height:42px;border-radius:999px;background:var(--grad-brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 auto}
.review-name{font-size:15px;font-weight:600}
.review-date{font-size:12.5px;color:var(--ink-2)}
.stars{color:var(--accent);font-size:14px;letter-spacing:2px}
.review-text{margin-top:12px;font-size:14.5px;color:var(--ink-2);line-height:1.75}

/* ---------- 下载区 ---------- */
.download-card{position:relative;overflow:hidden;background:var(--grad-brand);color:#fff;border-radius:var(--r-lg);padding:28px 24px;box-shadow:var(--sh3)}
@media(min-width:1024px){.download-card{padding:40px}}
.download-card::before{content:"";position:absolute;left:-60px;top:-80px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.12)}
.download-inner{position:relative;z-index:2;display:grid;gap:28px}
@media(min-width:1024px){.download-inner{grid-template-columns:1fr auto;align-items:center;gap:44px}}
.download-title{font-size:23px;font-weight:700}
@media(min-width:1024px){.download-title{font-size:28px}}
.download-desc{margin-top:10px;font-size:15px;color:rgba(255,255,255,.85);max-width:560px}
.download-btns{display:flex;flex-direction:column;gap:12px;margin-top:22px}
@media(min-width:640px){.download-btns{flex-direction:row;flex-wrap:wrap}}
.download-btns .btn-ghost{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.28);color:#fff;width:100%}
@media(min-width:640px){.download-btns .btn-ghost{width:auto}}
.download-btns .btn-ghost:hover{background:rgba(255,255,255,.18);border-color:#fff;color:#fff}
.download-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.72);display:flex;align-items:center;gap:8px}
.qr-box{background:#fff;border:1px solid rgba(255,255,255,.5);border-radius:var(--r-md);padding:12px;width:164px;margin:0 auto;text-align:center}
.qr-box svg{width:140px;height:140px;display:block}
.qr-caption{margin-top:8px;font-size:12.5px;color:var(--ink-2)}
@media(max-width:1023px){.qr-box{margin-top:4px}}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;gap:20px}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh1);overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;min-height:340px}
.news-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh2)}
.news-cover{aspect-ratio:3/2;background:linear-gradient(135deg,rgba(11,46,39,.10),rgba(25,192,138,.16));overflow:hidden}
.news-cover img{width:100%;height:100%;object-fit:cover}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.news-tag{align-self:flex-start;display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;background:rgba(127,217,184,.24);color:var(--brand-700);font-size:12.5px}
.news-title{margin-top:12px;font-size:16.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--ink)}
.news-title:hover{color:var(--brand-500)}
.news-summary{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:47px}
.news-meta{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--ink-2)}
.news-empty{grid-column:1/-1;background:#fff;border:1px dashed #CBDCCF;border-radius:var(--r-md);padding:44px 24px;text-align:center;min-height:340px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}
.news-empty-figure{width:120px;height:120px;border-radius:24px;background:linear-gradient(135deg,rgba(11,46,39,.08),rgba(25,192,138,.16));display:flex;align-items:center;justify-content:center;color:var(--brand-700);font-size:26px;font-weight:800}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;gap:28px}
@media(min-width:1024px){.faq-layout{grid-template-columns:4fr 8fr;gap:44px;align-items:start}}
.faq-aside-card{margin-top:20px;background:var(--grad-brand);color:#fff;border-radius:var(--r-md);padding:20px}
.faq-aside-card p{font-size:14px;color:rgba(255,255,255,.85);margin-top:8px}
.faq-aside-card .btn{margin-top:16px;width:100%}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh1);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;padding:12px 20px;text-align:left;font-size:15.5px;font-weight:600;color:var(--ink);transition:background .2s ease,color .2s ease}
.faq-q:hover{background:rgba(15,166,120,.05);color:var(--brand-700)}
.faq-caret{width:22px;height:22px;flex:0 0 auto;color:var(--brand-500);transition:transform .25s ease}
.faq-item.open .faq-caret{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:340px}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- 深色 CTA ---------- */
.cta-band{background:var(--brand-900);color:#fff;border-radius:var(--r-lg);padding:32px 24px;display:grid;gap:20px;position:relative;overflow:hidden}
@media(min-width:1024px){.cta-band{grid-template-columns:1fr auto;align-items:center;padding:44px 40px}}
.cta-band::after{content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;background:rgba(25,192,138,.16)}
.cta-band h2{position:relative;z-index:2;font-size:23px;font-weight:700}
@media(min-width:1024px){.cta-band h2{font-size:28px}}
.cta-band p{position:relative;z-index:2;margin-top:10px;font-size:15px;color:rgba(255,255,255,.8);max-width:620px}
.cta-band .cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#fff;margin-top:48px;padding:48px 0 24px}
@media(min-width:1024px){.site-footer{margin-top:80px;padding:64px 0 28px}}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.20)}
.footer-brand-text{font-size:16.5px;font-weight:800}
.footer-desc{margin-top:14px;font-size:14px;color:rgba(255,255,255,.72);max-width:320px;line-height:1.8}
.footer-col h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.75);font-size:14px}
.footer-col a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.75)}
.footer-qr{margin-top:14px;background:#fff;border-radius:12px;padding:8px;width:112px}
.footer-qr svg{width:96px;height:96px;display:block}
.footer-divider{border:0;border-top:1px solid rgba(255,255,255,.14);margin:32px 0 20px}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.62)}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:18px;bottom:22px;width:46px;height:46px;border-radius:999px;background:var(--brand-900);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--sh2);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s ease,transform .25s ease,visibility .25s ease;z-index:50}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand-700);color:#fff}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reel{scroll-behavior:auto}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: article */
:root{
  --brand-900:#0B2E27;
  --brand-700:#0F5A45;
  --brand-500:#0FA678;
  --brand-300:#7FD9B8;
  --grad-brand:linear-gradient(135deg,#0B2E27 0%,#0F7A5A 55%,#19C08A 100%);
  --action:#FF6B2C;
  --action-hover:#F2551A;
  --grad-action:linear-gradient(135deg,#FF7A3D,#F04E12);
  --accent:#FFC53D;
  --bg:#F4F7F4;
  --surface:#FFFFFF;
  --line:#E2EAE4;
  --ink:#14201C;
  --ink-2:#55665F;
  --ok:#17A673;
  --warn:#E8A33D;
  --sh1:0 1px 2px rgba(11,46,39,.06);
  --sh2:0 10px 30px -12px rgba(11,46,39,.18);
  --sh3:0 20px 48px -18px rgba(11,46,39,.30);
  --r-lg:24px;
  --r-md:16px;
  --r-btn:12px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease,text-underline-offset .2s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;}
p{margin:0 0 1.1em;}
ul,ol{margin:0 0 1.1em;padding-left:1.25em;}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 24px;}}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh2);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:66px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:var(--grad-brand);color:#fff;font-weight:800;font-size:18px;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:16.5px;font-weight:800;letter-spacing:.01em;}
.brand-sub{font-size:11.5px;color:var(--ink-2);letter-spacing:.05em;}
.nav-menu{display:flex;align-items:center;gap:26px;}
.nav-menu a{
  position:relative;display:inline-block;padding:8px 0;font-size:15px;color:var(--ink);font-weight:500;
}
.nav-menu a:hover{color:var(--brand-500);text-decoration:none;}
.nav-menu a.active{color:var(--brand-500);font-weight:700;}
.nav-menu a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:var(--brand-500);
}
.nav-right{display:flex;align-items:center;gap:10px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{background:var(--grad-action);color:#fff;box-shadow:var(--sh2);}
.btn-primary:hover{background:linear-gradient(135deg,#FF6B2C,#E8440C);color:#fff;transform:translateY(-1px);text-decoration:none;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);text-decoration:none;transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-overlay{
  position:fixed;inset:0;background:rgba(11,46,39,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.nav-overlay.is-open{opacity:1;visibility:visible;}

/* ---------- 文章头部 ---------- */
.article-head{
  background:
    radial-gradient(circle at 88% 12%,rgba(25,192,138,.22),transparent 46%),
    var(--grad-brand);
  color:#fff;
  padding:34px 0 44px;
}
.breadcrumb{font-size:12.5px;color:rgba(255,255,255,.78);margin-bottom:18px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;}
.breadcrumb li{display:flex;align-items:center;gap:8px;max-width:100%;}
.breadcrumb li + li::before{content:"/";color:rgba(255,255,255,.45);}
.breadcrumb a{color:rgba(255,255,255,.86);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .current{color:rgba(255,255,255,.72);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:280px;}
.article-head h1{
  color:#fff;font-size:30px;font-weight:700;line-height:1.35;letter-spacing:.01em;max-width:900px;
}
.meta-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;
  padding-top:18px;border-top:1px solid rgba(255,255,255,.22);
}
.meta-chip{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 13px;border-radius:999px;
  font-size:12.5px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);color:#fff;
}
.meta-chip.is-accent{background:rgba(255,197,61,.18);border-color:rgba(255,197,61,.42);color:#FFE3A3;}
.meta-chip:hover{text-decoration:none;color:#fff;}

/* ---------- 布局 ---------- */
.article-shell{padding:48px 0 64px;}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
.article-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh1);
  padding:24px 20px;
}
@media (min-width:768px){.article-card{padding:36px 40px;}}
@media (min-width:1024px){
  .article-grid{grid-template-columns:minmax(0,1fr) 312px;gap:40px;align-items:start;}
}

/* ---------- 正文排版 ---------- */
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:#22302B;}
@media (max-width:640px){.article-body{font-size:15px;line-height:1.85;}}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.15em;text-align:left;}
.article-body h2{
  position:relative;font-size:23px;font-weight:700;line-height:1.35;color:var(--ink);
  margin:2em 0 .8em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:20px;border-radius:2px;background:var(--brand-500);
}
.article-body h3{font-size:18.5px;font-weight:600;color:var(--ink);margin:1.6em 0 .6em;}
.article-body h4{font-size:16.5px;font-weight:600;color:var(--ink);margin:1.4em 0 .5em;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.15em;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul > li{position:relative;padding-left:18px;margin-bottom:.5em;}
.article-body ul > li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--brand-500);
}
.article-body ol{list-style:decimal;padding-left:1.4em;}
.article-body ol > li{margin-bottom:.5em;padding-left:2px;}
.article-body ol > li::marker{color:var(--brand-500);font-weight:700;}
.article-body blockquote{
  margin:1.4em 0;padding:16px 18px;background:#EEF7F2;border-left:3px solid var(--brand-500);
  border-radius:0 12px 12px 0;color:#25382F;font-size:15.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--brand-500);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-700);}
.article-body img{border-radius:16px;margin:1.4em auto;box-shadow:var(--sh1);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px;line-height:1.6;}
.article-body table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:1.4em 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;
}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;}
.article-body th{background:#F2F6F3;font-weight:600;color:var(--ink);}
.article-body tr:last-child td{border-bottom:0;}
.article-body code{
  background:#EEF3EF;border-radius:6px;padding:2px 6px;font-size:14px;
  font-family:ui-monospace,Menlo,Consolas,monospace;color:#0F5A45;
}
.article-body pre{
  background:#F1F5F2;border:1px solid var(--line);border-radius:12px;padding:16px;overflow-x:auto;
  font-size:14px;line-height:1.7;margin:1.4em 0;
}
.article-body pre code{background:none;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

/* ---------- 标签与空态 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:32px;padding-top:22px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
  font-size:12.5px;color:var(--brand-700);background:rgba(127,217,184,.22);border:1px solid rgba(15,166,120,.25);
}
.empty-state{
  padding:48px 20px;text-align:center;background:#F7FAF8;border:1px dashed var(--line);border-radius:var(--r-md);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 16px;border-radius:18px;background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:26px;font-weight:700;
}
.empty-state p{color:var(--ink-2);margin-bottom:18px;}

/* ---------- 侧栏 ---------- */
.article-side{display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh1);padding:20px;
}
.side-card h2{
  font-size:14px;font-weight:700;letter-spacing:.04em;color:var(--ink-2);text-transform:none;
  margin:0 0 14px;padding-left:11px;position:relative;
}
.side-card h2::before{
  content:"";position:absolute;left:0;top:2px;width:4px;height:14px;border-radius:2px;background:var(--brand-500);
}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;font-size:14px;color:var(--ink-2);padding:7px 10px;border-radius:10px;
  border-left:2px solid transparent;line-height:1.5;
}
.toc-list a:hover{background:#F3F8F5;color:var(--brand-700);text-decoration:none;}
.toc-list a.is-current{color:var(--brand-500);border-left-color:var(--brand-500);background:#F3F8F5;font-weight:600;}
.side-cta{
  background:var(--grad-brand);color:#fff;border-radius:var(--r-md);padding:22px 20px;
  position:relative;overflow:hidden;border:1px solid rgba(255,255,255,.12);
}
.side-cta::after{
  content:"";position:absolute;top:-46px;right:-46px;width:140px;height:140px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.side-cta h2{color:#fff;font-size:17px;font-weight:700;margin:0 0 8px;}
.side-cta h2::before{display:none;}
.side-cta p{font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.86);margin:0 0 16px;}
.side-cta .btn{position:relative;z-index:1;}
.side-rec{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;}
.side-rec li + li{padding-top:12px;border-top:1px solid var(--line);}
.side-rec a{display:flex;gap:12px;align-items:flex-start;color:var(--ink);}
.side-rec a:hover{text-decoration:none;color:var(--brand-700);}
.side-rec .thumb{
  width:64px;height:44px;flex:0 0 64px;border-radius:10px;overflow:hidden;background:#E8F1EB;
}
.side-rec .thumb img{width:100%;height:100%;object-fit:cover;}
.side-rec .rec-title{font-size:14px;line-height:1.5;font-weight:600;}
.side-rec .rec-tag{font-size:12px;color:var(--ink-2);}
.side-cta .qr{
  width:92px;height:92px;margin:14px auto 0;background:#fff;border-radius:12px;padding:6px;
}
.side-cta .qr svg{width:100%;height:100%;display:block;}

/* ---------- 文末区 ---------- */
.article-tail{margin-top:48px;}
.section-title{font-size:22px;font-weight:700;margin-bottom:20px;}
.prevnext{display:grid;grid-template-columns:1fr;gap:16px;margin-bottom:44px;}
@media (min-width:768px){.prevnext{grid-template-columns:1fr 1fr;}}
.prevnext-card{
  display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:18px 20px;box-shadow:var(--sh1);color:var(--ink);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.prevnext-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh2);text-decoration:none;color:var(--ink);}
.prevnext-card .arrow{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;background:#EAF5EF;color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;
}
.prevnext-card .pn-label{font-size:12.5px;color:var(--ink-2);}
.prevnext-card .pn-title{font-size:15.5px;font-weight:600;line-height:1.5;}
.rec-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.rec-grid{grid-template-columns:1fr 1fr;}}
@media (min-width:1024px){.rec-grid{grid-template-columns:repeat(3,1fr);}}
.rec-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh1);color:var(--ink);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.rec-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh2);text-decoration:none;color:var(--ink);}
.rec-card .cover{aspect-ratio:3/2;background:#E8F1EB;overflow:hidden;}
.rec-card .cover img{width:100%;height:100%;object-fit:cover;}
.rec-card .body{padding:18px 20px 22px;}
.rec-card .rec-kicker{font-size:12.5px;color:var(--brand-500);font-weight:600;margin-bottom:8px;display:block;}
.rec-card h3{font-size:16.5px;font-weight:600;line-height:1.55;margin-bottom:8px;}
.rec-card p{font-size:14px;color:var(--ink-2);line-height:1.7;margin:0;}
.back-home{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand-500);margin-top:32px;}
.back-home:hover{text-decoration:none;color:var(--brand-700);}
.back-home .arrow{transition:transform .25s ease;}
.back-home:hover .arrow{transform:translateX(3px);}

/* ---------- 深色 CTA ---------- */
.cta-band{
  background:var(--grad-brand);border-radius:var(--r-lg);padding:32px 24px;color:#fff;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;bottom:-70px;left:-40px;width:210px;height:210px;border-radius:50%;
  background:rgba(255,255,255,.09);
}
.cta-band .inner{position:relative;z-index:1;display:flex;flex-direction:column;gap:20px;}
.cta-band h2{color:#fff;font-size:24px;font-weight:700;margin-bottom:10px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:15px;margin:0;}
.cta-band .btn-row{display:flex;flex-wrap:wrap;gap:12px;}
@media (min-width:900px){
  .cta-band{padding:40px 44px;}
  .cta-band .inner{flex-direction:row;align-items:center;justify-content:space-between;}
  .cta-band h2{font-size:26px;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#fff;margin-top:64px;padding:52px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:28px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);}
.footer-brand-text{font-size:17px;font-weight:800;}
.footer-desc{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.72);margin:0;}
.footer-col h3{color:#fff;font-size:14.5px;font-weight:600;margin:0 0 14px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:rgba(255,255,255,.76);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-contact li{font-size:13.5px;color:rgba(255,255,255,.76);line-height:1.7;}
.footer-qr{width:104px;height:104px;background:#fff;border-radius:14px;padding:6px;margin-top:14px;}
.footer-qr svg{width:100%;height:100%;display:block;}
.footer-bottom{
  margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-direction:column;gap:8px;font-size:12.5px;color:rgba(255,255,255,.6);
}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}
}
.back-top{
  position:fixed;right:20px;bottom:22px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-900);color:#fff;border:1px solid rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;font-size:17px;cursor:pointer;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease,transform .25s ease;z-index:65;
}
.back-top.is-visible{opacity:1;visibility:visible;}
.back-top:hover{transform:translateY(-2px);background:var(--brand-700);}

/* ---------- 响应式导航 ---------- */
@media (max-width:1023px){
  .nav-toggle{display:flex;}
  .nav-menu{
    position:fixed;top:0;right:0;height:100%;width:84%;max-width:340px;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;padding:80px 20px 100px;z-index:80;
    box-shadow:var(--sh3);transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;
  }
  .nav-menu.is-open{transform:translateX(0);}
  .nav-menu a{min-height:44px;display:flex;align-items:center;font-size:15.5px;border-bottom:1px solid var(--line);}
  .nav-menu a.active::after{display:none;}
  .btn-desktop{display:none;}
}
@media (min-width:1024px){
  .nav-overlay{display:none;}
}
@media (max-width:640px){
  .article-head{padding:26px 0 34px;}
  .article-head h1{font-size:24px;}
  .breadcrumb .current{max-width:180px;}
  .article-card{padding:22px 18px;}
  .cta-band h2{font-size:21px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0B2E27;
  --brand-700:#0F5A45;
  --brand-500:#0FA678;
  --brand-300:#7FD9B8;
  --grad-brand:linear-gradient(135deg,#0B2E27 0%,#0F7A5A 55%,#19C08A 100%);
  --action:#FF6B2C;
  --action-hover:#F2551A;
  --grad-action:linear-gradient(135deg,#FF7A3D,#F04E12);
  --accent:#FFC53D;
  --bg:#F4F7F4;
  --surface:#FFFFFF;
  --line:#E2EAE4;
  --ink:#14201C;
  --ink-2:#55665F;
  --ok:#17A673;
  --warn:#E8A33D;
  --sh1:0 1px 2px rgba(11,46,39,.06);
  --sh2:0 10px 30px -12px rgba(11,46,39,.18);
  --sh3:0 20px 48px -18px rgba(11,46,39,.30);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease,text-decoration-color .2s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

.container{max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.container{padding:0 24px;}}

/* 顶部信息条 */
.topbar{background:var(--brand-900);color:#fff;font-size:12.5px;line-height:1.5;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:34px;padding:6px 0;}
.topbar-domain{opacity:.86;letter-spacing:.02em;}
.topbar-note{display:none;color:rgba(255,255,255,.82);}
.topbar-note strong{color:var(--accent);font-weight:600;}
.topbar-links{display:flex;align-items:center;gap:14px;flex:none;}
.topbar-links a{color:#fff;font-size:12.5px;opacity:.9;}
.topbar-links a:hover{color:var(--accent);text-decoration:none;opacity:1;}
@media(min-width:768px){.topbar-note{display:block;}}
@media(max-width:520px){.topbar-links a:first-child{display:none;}}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s ease;}
.site-header.is-scrolled{box-shadow:var(--sh2);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;flex:none;}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:none;
  background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;letter-spacing:.04em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:17px;font-weight:800;letter-spacing:.01em;}
.brand-sub{font-size:11.5px;color:var(--ink-2);letter-spacing:.06em;}
.nav-menu{display:none;align-items:center;gap:4px;}
.nav-menu a{
  position:relative;display:inline-flex;align-items:center;height:44px;
  padding:0 12px;font-size:14.5px;color:var(--ink);border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-menu a:hover{color:var(--brand-500);background:#F1F7F3;text-decoration:none;}
.nav-menu a.active{color:var(--brand-500);font-weight:600;}
.nav-menu a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;border-radius:2px;background:var(--brand-500);
}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:#fff;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s ease,opacity .2s ease;}
.nav-toggle:hover{border-color:var(--brand-500);background:#F1F7F3;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media(min-width:1024px){
  .nav-menu{display:flex;}
  .nav-toggle{display:none;}
}
@media(max-width:1023px){
  .nav-menu{
    position:fixed;top:0;right:0;z-index:80;
    width:84%;max-width:360px;height:100vh;
    background:#fff;display:flex;flex-direction:column;
    align-items:stretch;gap:2px;
    padding:80px 20px 96px;
    transform:translateX(102%);
    transition:transform .3s ease;
    box-shadow:var(--sh3);
    overflow-y:auto;
  }
  .nav-menu.is-open{transform:translateX(0);}
  .nav-menu a{height:44px;font-size:15px;border-radius:10px;}
  .nav-menu a.active::after{display:none;}
  .nav-menu a.active{background:#F1F7F3;}
  .drawer-cta{
    position:fixed;bottom:0;right:0;width:84%;max-width:360px;z-index:81;
    padding:16px 20px calc(16px + env(safe-area-inset-bottom));
    background:#fff;border-top:1px solid var(--line);
    transform:translateX(102%);transition:transform .3s ease;
  }
  .drawer-cta.is-open{transform:translateX(0);}
  .drawer-cta .btn{width:100%;}
  .drawer-mask{
    position:fixed;inset:0;z-index:70;background:rgba(11,46,39,.45);
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
}
@media(min-width:1024px){.drawer-cta,.drawer-mask{display:none;}}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s ease,box-shadow .25s ease,border-color .2s ease,background .25s ease,color .2s ease;
  text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--grad-action);color:#fff;box-shadow:var(--sh2);}
.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:0 14px 32px -14px rgba(240,78,18,.55);filter:brightness(.96);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line);}
.btn-ghost:hover{color:var(--ink);border-color:var(--brand-500);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-500);
  font-size:14.5px;font-weight:600;min-height:44px;
}
.btn-text .arrow{transition:transform .2s ease;}
.btn-text:hover{text-decoration:none;color:var(--brand-700);}
.btn-text:hover .arrow{transform:translateX(3px);}

/* 通用板块 */
.section{padding:48px 0;}
@media(min-width:1024px){.section{padding:80px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:26px;}
.section-title{font-size:23px;font-weight:700;line-height:1.3;letter-spacing:.01em;}
@media(min-width:1024px){.section-title{font-size:30px;}}
.section-sub{color:var(--ink-2);font-size:14px;max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  color:var(--brand-700);background:rgba(127,217,184,.28);
  border:1px solid rgba(15,166,120,.25);border-radius:999px;padding:5px 12px;
}
.h2-bar{position:relative;padding-left:14px;}
.h2-bar::before{
  content:"";position:absolute;left:0;top:.18em;width:4px;height:20px;border-radius:3px;background:var(--brand-500);
}

/* 徽章 */
.badge-row{display:flex;flex-wrap:wrap;gap:8px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  min-height:30px;padding:4px 12px;border-radius:999px;
  font-size:12.5px;line-height:1.4;color:var(--brand-900);
  background:rgba(127,217,184,.30);border:1px solid rgba(15,166,120,.22);
}
.badge b{font-weight:700;}
.badge.accent{background:rgba(255,197,61,.22);border-color:rgba(232,163,61,.35);}
.badge.plain{background:#fff;border-color:var(--line);color:var(--ink-2);}

/* 面包屑 */
.crumbs{font-size:12.5px;color:var(--ink-2);padding-top:18px;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.crumbs li{display:flex;align-items:center;gap:6px;}
.crumbs li+li::before{content:"/";color:#9DB0A6;}
.crumbs a{color:var(--ink-2);}
.crumbs a:hover{color:var(--brand-500);text-decoration:none;}
.crumbs li[aria-current] {color:#8DA298;}

/* Hero */
.cat-hero{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--grad-brand);color:#fff;
  padding:32px 24px;margin-top:16px;
  box-shadow:var(--sh3);
}
.cat-hero::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.cat-hero::before{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,0) 0%,rgba(255,255,255,.35) 50%,rgba(255,255,255,0) 100%);
}
.cat-hero-inner{position:relative;z-index:1;max-width:860px;}
.cat-hero h1{
  font-size:30px;line-height:1.25;font-weight:800;letter-spacing:.01em;margin:14px 0 14px;
}
@media(min-width:1024px){.cat-hero{padding:56px 48px;} .cat-hero h1{font-size:40px;}}
.cat-hero .lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.92);max-width:760px;}
@media(min-width:1024px){.cat-hero .lead{font-size:18px;}}
.cat-hero .badge-row{margin-top:22px;}
.cat-hero .badge{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.22);color:#fff;}
.cat-hero .badge b{color:var(--accent);}
.cat-hero .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.cat-hero .btn-ghost{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.30);color:#fff;}
.cat-hero .btn-ghost:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.18);}
.hero-thumb{
  margin-top:26px;border-radius:18px;overflow:hidden;
  border:1px solid rgba(255,255,255,.22);background:rgba(0,0,0,.12);
}
.hero-thumb img{width:100%;height:200px;object-fit:cover;}
@media(min-width:768px){.hero-thumb img{height:260px;}}

/* 宽图文卡 */
.wide-card{
  display:grid;grid-template-columns:1fr;gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh1);overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.wide-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh2);}
@media(min-width:768px){
  .wide-card{grid-template-columns:44% 1fr;}
}
.wide-thumb{position:relative;background:#E8F1EB;aspect-ratio:3/2;}
.wide-thumb img{width:100%;height:100%;object-fit:cover;}
@media(min-width:768px){.wide-thumb{aspect-ratio:auto;height:100%;min-height:230px;}}
.wide-thumb .tag{
  position:absolute;left:14px;top:14px;
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  background:rgba(11,46,39,.78);color:#fff;font-size:12px;letter-spacing:.02em;
}
.wide-body{padding:22px 20px;display:flex;flex-direction:column;gap:12px;}
@media(min-width:1024px){.wide-body{padding:26px 26px;}}
.wide-body h3{font-size:19px;font-weight:600;line-height:1.4;}
.wide-body p{font-size:15px;color:var(--ink-2);line-height:1.8;}
.wide-body ul{display:flex;flex-direction:column;gap:8px;}
.wide-body li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-2);line-height:1.75;}
.wide-body li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:2px;border-radius:2px;background:var(--brand-500);
}
.wide-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.wide-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.wide-grid{grid-template-columns:1fr;}}
@media(min-width:1024px){.wide-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}}

/* 文字链接列表 */
.linklist{display:grid;grid-template-columns:1fr;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:10px;box-shadow:var(--sh1);}
.linklist a{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:14px;
  min-height:52px;padding:10px 14px 10px 18px;border-radius:12px;
  color:var(--ink);font-size:15px;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.linklist a::before{
  content:"";position:absolute;left:6px;top:50%;transform:translateY(-50%);
  width:4px;height:22px;border-radius:3px;background:var(--brand-500);
}
.linklist a:hover{background:#F1F7F3;color:var(--brand-700);text-decoration:none;}
.linklist a .arrow{color:var(--brand-500);flex:none;transition:transform .2s ease;}
.linklist a:hover .arrow{transform:translateX(3px);}
@media(min-width:768px){.linklist{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;padding:12px;}}

/* 准备事项 */
.prep{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 20px;box-shadow:var(--sh1);
  display:grid;grid-template-columns:1fr;gap:22px;
}
@media(min-width:1024px){.prep{grid-template-columns:1.1fr 1fr;padding:32px;gap:36px;align-items:center;}}
.prep figure{margin:0;border-radius:var(--r-md);overflow:hidden;background:#E8F1EB;aspect-ratio:3/2;}
.prep figure img{width:100%;height:100%;object-fit:cover;}
.prep h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.prep p{color:var(--ink-2);font-size:15px;margin-bottom:14px;}
.prep ul{display:flex;flex-direction:column;gap:10px;}
.prep li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);line-height:1.7;}
.prep li .dot{
  flex:none;width:22px;height:22px;border-radius:999px;margin-top:3px;
  background:rgba(15,166,120,.14);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;
}

/* FAQ */
.faq-wrap{ display:grid;grid-template-columns:1fr;gap:24px;}
@media(min-width:1024px){.faq-wrap{grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:40px;align-items:start;}}
.faq-aside{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh1);}
.faq-aside h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.faq-aside p{font-size:14px;color:var(--ink-2);margin-bottom:16px;}
.faq-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);}
.faq-item+.faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:15.5px;font-weight:600;color:var(--ink);
  min-height:60px;transition:color .2s ease,background .2s ease;
}
.faq-q:hover{color:var(--brand-500);background:#FAFCFA;}
.faq-q .chev{flex:none;transition:transform .25s ease;color:var(--brand-500);}
.faq-item.open .faq-q{color:var(--brand-700);}
.faq-item.open .chev{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-2);}
.faq-a-inner ul{display:flex;flex-direction:column;gap:6px;margin-top:10px;}
.faq-a-inner li{position:relative;padding-left:16px;}
.faq-a-inner li::before{content:"";position:absolute;left:0;top:.7em;width:6px;height:2px;border-radius:2px;background:var(--brand-500);}

/* 相关页面 */
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}}
@media(min-width:1024px){.rel-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.rel-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh1);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  color:var(--ink);
}
.rel-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh2);text-decoration:none;color:var(--ink);}
.rel-card .rel-thumb{aspect-ratio:3/2;background:#E8F1EB;}
.rel-card .rel-thumb img{width:100%;height:100%;object-fit:cover;}
.rel-card .rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;}
.rel-card h3{font-size:17px;font-weight:600;}
.rel-card p{font-size:14px;color:var(--ink-2);line-height:1.75;}
.rel-card .rel-more{margin-top:auto;padding-top:8px;color:var(--brand-500);font-size:14px;font-weight:600;}

/* 渐变条 CTA */
.grad-strip{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--grad-brand);color:#fff;padding:28px 22px;
  display:grid;grid-template-columns:1fr;gap:20px;box-shadow:var(--sh3);
}
@media(min-width:1024px){.grad-strip{grid-template-columns:1.4fr 1fr;padding:38px 40px;align-items:center;}}
.grad-strip::after{content:"";position:absolute;left:-70px;bottom:-90px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.10);}
.grad-strip-inner{position:relative;z-index:1;}
.grad-strip h2{font-size:22px;font-weight:700;line-height:1.35;margin-bottom:10px;}
@media(min-width:1024px){.grad-strip h2{font-size:28px;}}
.grad-strip p{font-size:15px;color:rgba(255,255,255,.90);margin-bottom:18px;max-width:640px;}
.grad-actions{display:flex;flex-wrap:wrap;gap:12px;}
.grad-actions .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.30);color:#fff;}
.grad-actions .btn-ghost:hover{background:rgba(255,255,255,.2);border-color:#fff;color:#fff;}
.strip-note{position:relative;z-index:1;font-size:13px;color:rgba(255,255,255,.82);border-top:1px solid rgba(255,255,255,.22);padding-top:14px;}

/* 页脚 */
.site-footer{background:var(--brand-900);color:#fff;margin-top:56px;padding:44px 0 0;}
@media(min-width:1024px){.site-footer{margin-top:80px;padding-top:60px;}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:36px;height:36px;font-size:17px;}
.footer-brand-text{font-size:17px;font-weight:800;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:420px;}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:.05em;margin-bottom:14px;color:var(--accent);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:rgba(255,255,255,.82);font-size:14px;display:inline-block;min-height:22px;}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.78);line-height:1.7;}
.footer-qr{margin-top:16px;display:flex;flex-direction:column;gap:8px;}
.footer-qr .qr-box{width:104px;height:104px;background:#fff;border-radius:14px;padding:8px;}
.footer-qr .qr-box svg{width:100%;height:100%;display:block;}
.footer-qr span{font-size:12.5px;color:rgba(255,255,255,.66);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);border-bottom:1px solid rgba(255,255,255,.14);margin-top:36px;}
.footer-bottom-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:18px 0;font-size:13px;color:rgba(255,255,255,.66);
}
.footer-bottom-inner a{color:rgba(255,255,255,.72);}
.footer-bottom-inner a:hover{color:#fff;}
.footer-tail{padding:16px 0 22px;font-size:12.5px;color:rgba(255,255,255,.5);}

/* 返回顶部 */
.to-top{
  position:fixed;right:18px;bottom:18px;z-index:70;
  width:46px;height:46px;border-radius:999px;
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh2);
  display:flex;align-items:center;justify-content:center;color:var(--brand-700);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,border-color .2s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--brand-500);color:var(--brand-500);}

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

/* roulang page: category2 */
:root{
  --brand-900:#0B2E27;
  --brand-700:#0F5A45;
  --brand-500:#0FA678;
  --brand-300:#7FD9B8;
  --grad-brand:linear-gradient(135deg,#0B2E27 0%,#0F7A5A 55%,#19C08A 100%);
  --action:#FF6B2C;
  --action-hover:#F2551A;
  --grad-action:linear-gradient(135deg,#FF7A3D,#F04E12);
  --accent:#FFC53D;
  --bg:#F4F7F4;
  --surface:#FFFFFF;
  --line:#E2EAE4;
  --ink:#14201C;
  --ink-2:#55665F;
  --ok:#17A673;
  --warn:#E8A33D;
  --sh1:0 1px 2px rgba(11,46,39,.06);
  --sh2:0 10px 30px -12px rgba(11,46,39,.18);
  --sh3:0 20px 48px -18px rgba(11,46,39,.30);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  text-align:left;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font:inherit;color:inherit;border:0;background:none;}
input,select,textarea{font:inherit;}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 24px;}}

/* ===== 顶部信息条 ===== */
.topbar{
  background:var(--brand-900);
  color:#fff;
  font-size:12.5px;
  min-height:34px;
  display:flex;
  align-items:center;
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;}
.topbar-domain{letter-spacing:.04em;opacity:.86;white-space:nowrap;}
.topbar-mid{display:none;opacity:.82;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-links{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.topbar-links a{color:#fff;opacity:.9;display:inline-flex;align-items:center;gap:4px;}
.topbar-links a:hover{opacity:1;color:#fff;text-decoration:none;}
.topbar-links a i{font-style:normal;transition:transform .2s ease;display:inline-block;}
.topbar-links a:hover i{transform:translateX(3px);}
@media (min-width:1024px){
  .topbar-mid{display:block;flex:1 1 auto;text-align:center;}
}

/* ===== 主导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh2);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;flex:0 0 auto;}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad-brand);
  color:#fff;font-weight:800;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh1);
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-weight:800;font-size:17px;letter-spacing:.2px;white-space:nowrap;}
.brand-sub{font-size:11.5px;color:var(--ink-2);letter-spacing:.06em;white-space:nowrap;}

.nav-menu{display:none;}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  background:#fff;cursor:pointer;transition:border-color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand-500);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.nav-mask{
  position:fixed;inset:0;background:rgba(11,46,39,.45);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible;}

@media (max-width:1023px){
  .nav-menu{
    position:fixed;top:0;right:0;bottom:0;width:84%;max-width:340px;
    background:#fff;z-index:80;
    display:flex;flex-direction:column;
    padding:88px 22px 96px;
    transform:translateX(100%);
    transition:transform .3s ease;
    overflow-y:auto;
    box-shadow:var(--sh3);
  }
  .nav-menu.is-open{transform:translateX(0);}
  .nav-menu a{
    display:flex;align-items:center;min-height:44px;
    border-bottom:1px solid var(--line);
    color:var(--ink);font-size:16px;font-weight:500;
  }
  .nav-menu a:hover{color:var(--brand-500);text-decoration:none;}
  .nav-menu a.active{color:var(--brand-500);font-weight:700;}
  .drawer-cta{
    margin-top:20px;border-bottom:0 !important;
    display:flex;align-items:center;justify-content:center;
    height:46px;border-radius:var(--r-sm);
    background:var(--grad-action);color:#fff !important;font-weight:700;
  }
  .drawer-cta:hover{color:#fff;text-decoration:none;}
}
@media (min-width:1024px){
  .nav-menu{
    display:flex;align-items:center;gap:26px;flex:1 1 auto;justify-content:center;
  }
  .nav-menu a{
    position:relative;color:var(--ink);font-size:15px;font-weight:500;
    padding:6px 0;white-space:nowrap;
  }
  .nav-menu a::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--brand-500);border-radius:2px;
    transform:scaleX(0);transform-origin:center;transition:transform .25s ease;
  }
  .nav-menu a:hover{color:var(--brand-500);text-decoration:none;}
  .nav-menu a:hover::after{transform:scaleX(1);}
  .nav-menu a.active{color:var(--brand-500);font-weight:700;}
  .nav-menu a.active::after{transform:scaleX(1);}
  .nav-toggle{display:none;}
  .drawer-cta{display:none;}
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .25s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--grad-action);color:#fff;box-shadow:var(--sh2);}
.btn-primary:hover{color:#fff;background:var(--action-hover);transform:translateY(-1px);box-shadow:var(--sh3);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh1);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);box-shadow:var(--sh1);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-light{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.38);color:#fff;}
.btn-light:hover{background:rgba(255,255,255,.26);color:#fff;transform:translateY(-1px);}
.btn-light:active{transform:translateY(1px);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-500);font-weight:600;font-size:14.5px;
  background:none;border:0;padding:6px 0;cursor:pointer;
}
.btn-text i{font-style:normal;transition:transform .2s ease;display:inline-block;}
.btn-text:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
.btn-text:hover i{transform:translateX(3px);}
.btn-desktop{display:none;}
@media (min-width:1024px){.btn-desktop{display:inline-flex;}}

/* ===== 页面首屏 ===== */
.page-hero{
  position:relative;
  padding:36px 0 12px;
  background:linear-gradient(180deg,#E8F3EE 0%,rgba(244,247,244,0) 100%);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(11,46,39,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(11,46,39,.055) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-2);margin-bottom:20px;}
.crumbs li{display:inline-flex;align-items:center;gap:8px;}
.crumbs li + li::before{content:"/";color:#B4C2BC;}
.crumbs a{color:var(--ink-2);}
.crumbs a:hover{color:var(--brand-500);}
.crumbs li[aria-current] span{color:var(--ink-2);}

.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(15,166,120,.12);
  border:1px solid rgba(15,166,120,.3);
  color:var(--brand-700);font-size:12.5px;font-weight:600;
  margin-bottom:18px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--action);display:inline-block;font-style:normal;}

h1{
  font-size:30px;font-weight:800;line-height:1.28;
  letter-spacing:-.2px;color:var(--ink);
  margin:0 0 16px;max-width:900px;
}
@media (min-width:1024px){h1{font-size:40px;line-height:1.25;}}
.hero-lead{
  font-size:17px;line-height:1.8;color:var(--ink-2);
  max-width:760px;margin-bottom:24px;
}
@media (min-width:1024px){.hero-lead{font-size:18px;}}

.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px;}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  min-height:30px;padding:0 14px;border-radius:999px;
  background:rgba(127,217,184,.26);
  border:1px solid rgba(15,166,120,.26);
  color:var(--brand-700);font-size:12.5px;font-weight:600;
}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--brand-500);display:inline-block;font-style:normal;}
.badge-accent{background:rgba(255,197,61,.18);border-color:rgba(255,197,61,.5);color:#8A5B00;}
.badge-accent i{background:var(--accent);}
.badge-dark{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3);color:#fff;}
.badge-dark i{background:var(--accent);}

/* ===== 板块 ===== */
.section{padding:48px 0;}
@media (min-width:1024px){.section{padding:80px 0;}}
.section-tight{padding:36px 0;}
@media (min-width:1024px){.section-tight{padding:56px 0;}}

.sec-head{max-width:760px;margin-bottom:28px;}
.sec-head h2{
  position:relative;font-size:23px;font-weight:700;line-height:1.35;
  padding-left:16px;margin-bottom:12px;
}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:20px;border-radius:2px;
  background:var(--brand-500);
}
@media (min-width:1024px){.sec-head h2{font-size:30px;}}
.sec-head p{color:var(--ink-2);font-size:15.5px;}
.sec-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;}

/* 准备卡 */
.grid-2{display:grid;gap:20px;}
@media (min-width:768px){.grid-2{grid-template-columns:repeat(2,1fr);gap:24px;}}
.prep-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--sh1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.prep-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh2);}
.prep-card h3{font-size:17px;font-weight:700;margin-bottom:8px;display:flex;align-items:center;gap:10px;}
.prep-card h3 .dot{
  width:26px;height:26px;border-radius:9px;background:rgba(15,166,120,.12);
  color:var(--brand-700);font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.prep-card p{color:var(--ink-2);font-size:14.8px;line-height:1.75;}

.figure-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh1);
}
.figure-card .fig{aspect-ratio:3/2;background:#E8F1EC;overflow:hidden;}
.figure-card .fig img{width:100%;height:100%;object-fit:cover;}
.figure-card .fig-body{padding:20px 22px;}
.figure-card .fig-body h3{font-size:17px;font-weight:700;margin-bottom:8px;}
.figure-card .fig-body p{color:var(--ink-2);font-size:14.8px;}

/* ===== 编号时间线 ===== */
.timeline{position:relative;margin-top:32px;}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--brand-300) 0%,rgba(127,217,184,.35) 70%,rgba(226,234,228,.9) 100%);
  border-radius:2px;
}
.tl-item{position:relative;display:flex;gap:18px;padding-bottom:32px;}
.tl-item:last-child{padding-bottom:0;}
.tl-marker{
  flex:0 0 40px;width:40px;height:40px;border-radius:50%;
  background:var(--brand-500);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:13.5px;font-weight:700;
  box-shadow:0 0 0 4px #fff,var(--sh1);
  position:relative;z-index:1;
}
.tl-body{
  flex:1 1 auto;min-width:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 20px 22px;box-shadow:var(--sh1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.tl-body:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--sh2);}
.tl-body h3{font-size:19px;font-weight:600;margin-bottom:10px;line-height:1.45;}
.tl-body p{color:var(--ink-2);font-size:15px;line-height:1.78;}
.tl-body p + p{margin-top:10px;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tl-note{
  margin-top:14px;padding:12px 14px;border-radius:12px;
  background:#F1F7F3;border-left:3px solid var(--brand-500);
  font-size:13.5px;color:var(--ink-2);line-height:1.7;
}
@media (min-width:1024px){
  .tl-body{padding:22px 24px 24px;}
  .tl-item{gap:22px;}
}

/* ===== 清单式内容 ===== */
.split{display:grid;gap:28px;}
@media (min-width:1024px){.split{grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}}
.check-list{margin-top:18px;display:grid;gap:14px;}
.check-list li{
  position:relative;padding-left:26px;
  color:var(--ink-2);font-size:15.2px;line-height:1.75;
}
.check-list li::before{
  content:"";position:absolute;left:2px;top:.62em;width:12px;height:4px;border-radius:2px;
  background:var(--brand-500);
}
.check-list li strong{color:var(--ink);font-weight:700;display:block;margin-bottom:2px;}

.topic-list{margin-top:24px;display:grid;gap:12px;}
.topic-list a{
  position:relative;display:block;padding:14px 18px 14px 20px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);
  color:var(--ink);font-size:15px;font-weight:600;
  transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease;
}
.topic-list a::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;border-radius:0 3px 3px 0;
  background:var(--brand-500);
}
.topic-list a:hover{
  text-decoration:none;border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--sh2);color:var(--brand-700);
}
.topic-list a span{display:block;font-size:13.5px;font-weight:400;color:var(--ink-2);margin-top:4px;}

/* ===== FAQ ===== */
.faq-wrap{display:grid;gap:24px;}
@media (min-width:1024px){.faq-wrap{grid-template-columns:4fr 8fr;gap:40px;align-items:start;}}
.faq-aside .faq-side-card{
  margin-top:20px;background:var(--grad-brand);color:#fff;
  border-radius:var(--r-md);padding:22px;position:relative;overflow:hidden;
  box-shadow:var(--sh2);
}
.faq-aside .faq-side-card::before{
  content:"";position:absolute;left:-30px;top:-30px;width:120px;height:120px;border-radius:50%;
  background:rgba(255,255,255,.12);
}
.faq-side-card h3{font-size:17px;font-weight:700;margin-bottom:8px;position:relative;}
.faq-side-card p{font-size:14px;color:rgba(255,255,255,.86);margin-bottom:16px;position:relative;}
.faq-side-card .btn{position:relative;}

.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:14px 4px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary h3{font-size:16px;font-weight:600;line-height:1.6;margin:0;}
.faq-item summary .arrow{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);color:var(--brand-500);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;transition:transform .28s ease,border-color .25s ease,background-color .25s ease;
}
.faq-item summary:hover h3{color:var(--brand-700);}
.faq-item summary:hover .arrow{border-color:var(--brand-500);background:rgba(15,166,120,.08);}
.faq-item[open] summary .arrow{transform:rotate(180deg);}
.faq-answer{padding:0 4px 20px;color:var(--ink-2);font-size:15px;line-height:1.8;max-width:720px;}

/* ===== 下载区块 ===== */
.dl-band{
  position:relative;overflow:hidden;
  background:var(--grad-brand);
  border-radius:var(--r-lg);
  padding:30px 22px;
  color:#fff;
  box-shadow:var(--sh3);
}
.dl-band::before{
  content:"";position:absolute;right:-60px;top:-80px;width:240px;height:240px;border-radius:50%;
  background:rgba(255,255,255,.10);
}
.dl-band .dl-inner{position:relative;display:grid;gap:24px;}
@media (min-width:1024px){.dl-band .dl-inner{grid-template-columns:1.4fr .6fr;align-items:center;gap:40px;}}
.dl-band h2{font-size:23px;font-weight:700;margin-bottom:10px;}
.dl-band p{color:rgba(255,255,255,.88);font-size:15px;max-width:620px;}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px;}
.dl-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.78);}
.qr-box{
  background:#fff;border-radius:var(--r-md);border:1px solid var(--line);
  padding:12px;width:158px;margin:0 auto;box-shadow:var(--sh1);
}
.qr-box svg{width:100%;height:auto;display:block;border-radius:8px;}
.qr-caption{margin-top:10px;text-align:center;font-size:12.5px;color:rgba(255,255,255,.82);}
@media (min-width:1024px){.qr-caption{max-width:190px;margin-left:auto;margin-right:auto;}}

/* ===== 回到首页渐变条 ===== */
.back-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  background:var(--grad-brand);
  border-radius:var(--r-lg);
  padding:24px 22px;
  color:#fff;
  box-shadow:var(--sh2);
  position:relative;overflow:hidden;
}
.back-band::before{
  content:"";position:absolute;left:-40px;bottom:-70px;width:180px;height:180px;border-radius:50%;
  background:rgba(255,255,255,.09);
}
.back-band h2{font-size:19px;font-weight:700;margin-bottom:6px;position:relative;}
.back-band p{font-size:14px;color:rgba(255,255,255,.85);position:relative;}
.back-band .btn{position:relative;}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--brand-900);
  color:#fff;
  margin-top:56px;
  padding-top:48px;
  font-size:14px;
}
@media (min-width:1024px){.site-footer{padding-top:64px;}}
.footer-grid{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:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand-text{font-size:17px;font-weight:800;letter-spacing:.2px;}
.footer-desc{color:rgba(255,255,255,.72);font-size:13.8px;line-height:1.85;max-width:340px;}
.footer-col h3{font-size:15px;font-weight:700;margin-bottom:16px;color:#fff;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{color:rgba(255,255,255,.74);font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-contact li{color:rgba(255,255,255,.74);font-size:13.8px;line-height:1.8;}
.footer-qr{margin-top:16px;width:110px;background:#fff;border-radius:12px;padding:8px;}
.footer-qr svg{width:100%;height:auto;display:block;}
.footer-divider{height:1px;background:rgba(255,255,255,.12);margin:36px 0 20px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding-bottom:28px;color:rgba(255,255,255,.6);font-size:13px;
}
.footer-bottom p{margin:0;}

.to-top{
  position:fixed;right:18px;bottom:22px;z-index:90;
  width:46px;height:46px;border-radius:50%;
  background:var(--grad-action);color:#fff;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh3);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--action-hover);}

@media (max-width:520px){
  h1{font-size:26px;}
  .hero-lead{font-size:16px;}
  .dl-actions .btn{width:100%;}
  .btn{padding:0 18px;}
}

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

/* roulang page: category3 */
:root{
  --brand-900:#0B2E27;
  --brand-700:#0F5A45;
  --brand-500:#0FA678;
  --brand-300:#7FD9B8;
  --grad-brand:linear-gradient(135deg,#0B2E27 0%,#0F7A5A 55%,#19C08A 100%);
  --action:#FF6B2C;
  --action-hover:#F2551A;
  --grad-action:linear-gradient(135deg,#FF7A3D,#F04E12);
  --accent:#FFC53D;
  --bg:#F4F7F4;
  --surface:#FFFFFF;
  --line:#E2EAE4;
  --ink:#14201C;
  --ink-2:#55665F;
  --ok:#17A673;
  --warn:#E8A33D;
  --sh1:0 1px 2px rgba(11,46,39,.06);
  --sh2:0 10px 30px -12px rgba(11,46,39,.18);
  --sh3:0 20px 48px -18px rgba(11,46,39,.30);
  --r-lg:24px;
  --r-md:16px;
  --r-btn:12px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease,text-decoration-color .2s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:.01em;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em;}

.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%;}
@media (min-width:768px){.container{padding:0 24px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-900);color:#fff;font-size:12.5px;line-height:1.4;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:34px;}
.topbar-left{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.82);white-space:nowrap;}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;}
.topbar-mid{flex:1;text-align:center;color:rgba(255,255,255,.72);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.topbar-right{display:flex;align-items:center;gap:16px;white-space:nowrap;}
.topbar-right a{color:#fff;display:inline-flex;align-items:center;gap:4px;}
.topbar-right a:hover{color:var(--brand-300);text-decoration:none;}
.topbar-right a span{transition:transform .2s ease;display:inline-block;}
.topbar-right a:hover span{transform:translateX(3px);}
@media (max-width:767px){.topbar-mid{display:none;}}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .25s ease;}
.site-header.is-scrolled{box-shadow:var(--sh2);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:none;}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-mark{
  width:40px;height:40px;flex:none;border-radius:13px;background:var(--grad-brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:800;letter-spacing:.02em;
  box-shadow:var(--sh2);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-main{font-size:17px;font-weight:800;letter-spacing:.01em;}
.brand-sub{font-size:11.5px;color:var(--ink-2);font-weight:500;letter-spacing:.06em;}
.nav-menu{display:none;align-items:center;gap:26px;}
.nav-menu a{
  position:relative;display:inline-block;padding:22px 0;font-size:15px;color:var(--ink);font-weight:500;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-menu a:hover{color:var(--brand-500);text-decoration:none;}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.active{color:var(--brand-500);font-weight:700;}
.nav-menu a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:10px;flex:none;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--grad-action);color:#fff;box-shadow:var(--sh2);}
.btn-primary:hover{background:linear-gradient(135deg,#F2551A,#D93F06);color:#fff;transform:translateY(-1px);box-shadow:var(--sh3);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{background:var(--surface);border-color:var(--line);color:var(--ink);}
.btn-outline:hover{border-color:var(--brand-500);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--brand-500);padding:0 4px;height:auto;}
.btn-ghost .arrow{display:inline-block;transition:transform .2s ease;}
.btn-ghost:hover{color:var(--brand-700);}
.btn-ghost:hover .arrow{transform:translateX(3px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn-desktop{display:none;}
@media (min-width:1024px){.btn-desktop{display:inline-flex;}}

.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media (min-width:1024px){.nav-toggle{display:none;}}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,46,39,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84%;max-width:360px;background:var(--surface);z-index:90;
  transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;
  box-shadow:var(--sh3);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
.drawer-head strong{font-size:15px;}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-size:18px;line-height:1;color:var(--ink-2);}
.drawer-close:hover{border-color:var(--brand-500);color:var(--brand-500);}
.drawer-links{padding:10px 12px;flex:1;overflow-y:auto;}
.drawer-links a{
  display:flex;align-items:center;min-height:44px;padding:0 12px;border-radius:10px;font-size:15px;color:var(--ink);
}
.drawer-links a:hover{background:#F1F6F3;text-decoration:none;color:var(--brand-700);}
.drawer-links a.active{color:var(--brand-500);font-weight:700;background:#EDF7F2;}
.drawer-foot{padding:16px 20px 22px;border-top:1px solid var(--line);}

/* ---------- 页面首屏 ---------- */
.page-hero{
  position:relative;background:var(--grad-brand);color:#fff;overflow:hidden;
  padding:40px 0 47px;
}
.page-hero::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:44px 44px;opacity:.9;pointer-events:none;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,197,61,.20) 0%,rgba(255,197,61,0) 68%);pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{font-size:12.5px;margin-bottom:18px;color:rgba(255,255,255,.72);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;}
.breadcrumb li{display:flex;align-items:center;gap:6px;}
.breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.42);}
.breadcrumb a{color:rgba(255,255,255,.88);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb [aria-current="page"]{color:rgba(255,255,255,.62);}
.page-hero h1{
  font-size:30px;line-height:1.28;font-weight:800;color:#fff;max-width:820px;
}
@media (min-width:768px){.page-hero h1{font-size:36px;}}
@media (min-width:1024px){.page-hero h1{font-size:40px;}}
.hero-lead{
  margin-top:16px;max-width:760px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.86);
}
@media (min-width:768px){.hero-lead{font-size:17.5px;}}

.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.26);color:#fff;
}
.badge b{font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.badge.solid{background:rgba(255,197,61,.16);border-color:rgba(255,197,61,.45);color:#FFE7AB;}

/* ---------- 主体分栏 ---------- */
.section{padding:48px 0;}
@media (min-width:1024px){.section{padding:80px 0;}}
.section-head{margin-bottom:26px;}
.section-head h2{font-size:23px;line-height:1.32;font-weight:700;}
@media (min-width:1024px){.section-head h2{font-size:30px;}}
.section-head p{margin-top:10px;color:var(--ink-2);font-size:15px;max-width:760px;}

.faq-layout{display:grid;grid-template-columns:1fr;gap:28px;align-items:start;}
@media (min-width:1024px){
  .faq-layout{grid-template-columns:280px 1fr;gap:48px;}
  .toc{position:sticky;top:96px;}
}
.toc{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:16px;box-shadow:var(--sh1);
}
.toc-title{font-size:13px;font-weight:700;color:var(--ink-2);letter-spacing:.08em;margin-bottom:10px;}
.toc-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch;}
.toc-list::-webkit-scrollbar{height:4px;}
.toc-list::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px;}
.toc-link{
  display:block;white-space:nowrap;font-size:13.5px;color:var(--ink-2);padding:7px 12px;border-radius:999px;
  border:1px solid var(--line);background:#FAFCFA;transition:all .2s ease;
}
.toc-link:hover{border-color:var(--brand-500);color:var(--brand-700);text-decoration:none;}
.toc-link.active{background:#EDF7F2;border-color:var(--brand-300);color:var(--brand-700);font-weight:700;}
@media (min-width:1024px){
  .toc-list{display:block;overflow:visible;padding:0;}
  .toc-link{
    border:0;border-left:3px solid transparent;border-radius:0;
    padding:9px 10px;white-space:normal;line-height:1.5;background:transparent;
  }
  .toc-link:hover{background:#F5FAF7;border-left-color:var(--brand-300);}
  .toc-link.active{background:#F1F9F5;border-left-color:var(--brand-500);color:var(--brand-700);}
}
.toc-tip{
  margin-top:14px;padding:14px;border-radius:12px;background:var(--grad-brand);color:#fff;
}
.toc-tip strong{display:block;font-size:14px;margin-bottom:4px;}
.toc-tip p{font-size:12.5px;color:rgba(255,255,255,.82);margin:0 0 10px;line-height:1.6;}
.toc-tip .btn{height:38px;font-size:13.5px;padding:0 14px;background:#fff;color:var(--brand-900);box-shadow:none;}
.toc-tip .btn:hover{background:#F2FBF7;color:var(--brand-900);transform:translateY(-1px);}
.toc-tip-inline{display:none;}
@media (min-width:1024px){.toc-tip-inline{display:block;}}

.faq-main{display:flex;flex-direction:column;gap:40px;}
@media (min-width:1024px){.faq-main{gap:56px;}}
.faq-block{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh1);scroll-margin-top:96px;
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.faq-block:hover{border-color:var(--brand-300);box-shadow:var(--sh2);}
@media (min-width:768px){.faq-block{padding:28px;}}
.faq-block h2{
  position:relative;font-size:20px;font-weight:700;line-height:1.4;padding-left:14px;margin-bottom:14px;
}
.faq-block h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand-500);
}
@media (min-width:1024px){.faq-block h2{font-size:22px;}}
.faq-block p{color:var(--ink-2);font-size:15.5px;line-height:1.85;}
.faq-block h3{font-size:16px;font-weight:700;margin:20px 0 10px;color:var(--ink);}
.point-list{display:flex;flex-direction:column;gap:10px;margin:6px 0 0;}
.point-list li{
  position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:var(--ink-2);
}
.point-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:2px;background:var(--brand-300);
}
.point-list li b{color:var(--ink);font-weight:700;}
.block-figure{margin:20px 0 0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:#EEF4F0;}
.block-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;}
.block-figure figcaption{font-size:13px;color:var(--ink-2);padding:10px 14px;background:var(--surface);border-top:1px solid var(--line);}
.note{
  margin-top:18px;padding:14px 16px;border-left:3px solid var(--brand-500);background:#F1F9F5;border-radius:0 12px 12px 0;
  font-size:14.5px;color:var(--brand-700);line-height:1.8;
}
.note strong{font-weight:800;}

/* ---------- 表单 ---------- */
.form-wrap{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh1);
}
@media (min-width:768px){.form-wrap{padding:32px;}}
.form-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:768px){.form-grid{grid-template-columns:1fr 1fr;}}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1/-1;}
.field label{font-size:13px;color:var(--ink-2);font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;height:46px;border-radius:12px;border:1px solid var(--line);background:#FBFDFB;
  padding:0 14px;font-size:15px;color:var(--ink);transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(15,166,120,.14);
}
.field .err{font-size:13px;color:var(--action);min-height:18px;}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;}
.form-note{font-size:13px;color:var(--ink-2);}
.form-note a{font-weight:600;}

/* ---------- 渐变 CTA ---------- */
.grad-cta{
  position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--grad-brand);color:#fff;
  padding:26px 22px;display:grid;gap:22px;
}
.grad-cta::before{
  content:"";position:absolute;left:-40px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:rgba(255,255,255,.12);pointer-events:none;
}
.grad-cta > *{position:relative;z-index:2;}
.grad-cta h2{color:#fff;font-size:21px;font-weight:800;line-height:1.4;}
.grad-cta p{color:rgba(255,255,255,.84);font-size:14.5px;margin:8px 0 0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-actions .btn{width:100%;}
@media (min-width:640px){.cta-actions .btn{width:auto;}}
@media (min-width:1024px){
  .grad-cta{grid-template-columns:1.6fr auto;align-items:center;padding:34px 36px;}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#fff;margin-top:56px;padding:48px 0 0;}
@media (min-width:1024px){.site-footer{margin-top:80px;padding-top:64px;}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px;}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{box-shadow:none;}
.footer-brand-text{font-size:17px;font-weight:800;color:#fff;}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.68);max-width:420px;margin:0;}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;display:inline-flex;align-items:center;gap:6px;}
.footer-col a:hover{color:var(--brand-300);text-decoration:none;}
.footer-contact li{font-size:13.5px;color:rgba(255,255,255,.68);line-height:1.7;}
.footer-qr{
  margin-top:16px;width:110px;background:#fff;border-radius:14px;padding:8px;
}
.footer-qr svg{width:100%;height:auto;display:block;border-radius:8px;}
.footer-qr-cap{font-size:12px;color:rgba(255,255,255,.6);margin-top:8px;line-height:1.6;}
.footer-divider{height:1px;background:rgba(255,255,255,.12);margin:40px 0 0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 28px;font-size:12.5px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#fff;}

.back-top{
  position:fixed;right:18px;bottom:18px;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);color:var(--brand-700);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:var(--sh2);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .25s ease;z-index:70;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{border-color:var(--brand-500);color:var(--brand-500);transform:translateY(-2px);}

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