/* roulang page: index */
:root{
  --c-primary:#FF5A2E;
  --c-primary-700:#D93F16;
  --c-accent:#12D6A0;
  --c-accent-2:#7A5CFF;
  --ink-900:#141220;
  --ink-700:#2A2836;
  --text-1:#1B1D23;
  --text-2:#4A4F5A;
  --text-3:#6B7280;
  --bg-page:#F5F6F8;
  --bg-card:#FFFFFF;
  --line:#E6E8EE;
  --shadow-1:0 1px 2px rgba(20,18,32,.06);
  --shadow-2:0 8px 24px rgba(20,18,32,.08);
  --shadow-3:0 16px 40px rgba(20,18,32,.12);
  --r-card:14px;
  --r-card-lg:18px;
  --r-btn:10px;
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-700)}
h1,h2,h3,h4,h5{margin:0 0 .6em;color:var(--text-1);font-weight:700;line-height:1.3}
h1{font-size:clamp(30px,5vw,52px);font-weight:800;line-height:1.15;letter-spacing:-.5px}
h2{font-size:clamp(24px,3.2vw,36px);line-height:1.25}
h3{font-size:20px;font-weight:600}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{max-width:1280px;padding:0 32px}}
.section{padding:56px 0;scroll-margin-top:130px}
@media (min-width:1024px){.section{padding:88px 0}}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--text-3);margin:0;font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--c-primary);background:#FFF0EA;border-radius:999px;padding:6px 14px;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 22px;height:46px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(255,90,46,.26)}
.btn-primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(217,63,22,.32)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(217,63,22,.28)}
.btn-ghost{background:#fff;color:var(--text-1);border-color:var(--line);box-shadow:var(--shadow-1)}
.btn-ghost:hover{color:var(--c-primary);border-color:var(--c-primary);background:#FFF4EF;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-accent{background:var(--c-accent);color:#08302A;box-shadow:0 6px 18px rgba(18,214,160,.26)}
.btn-accent:hover{background:#0FBF8F;color:#062A24;transform:translateY(-2px)}
.btn-lg{height:52px;padding:0 28px;font-size:16px;border-radius:12px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.text-link{color:var(--c-primary);font-weight:600;font-size:15px;border-bottom:2px solid rgba(255,90,46,.25);padding-bottom:2px;transition:border-color .18s ease,color .18s ease}
.text-link:hover{border-bottom-color:var(--c-primary);color:var(--c-primary-700)}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;line-height:1;padding:6px 12px;border-radius:999px;background:#FFF0EA;color:var(--c-primary);white-space:nowrap}
.badge--accent{background:#E4FBF4;color:#0A7A5E}
.badge--violet{background:#F1EEFF;color:#5B3FE0;border:1px solid rgba(122,92,255,.35)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-1)}
.header-inner{max-width:1280px;margin:0 auto;height:56px;padding:0 20px;display:flex;align-items:center;gap:16px}
@media (min-width:1024px){.header-inner{height:var(--header-h);padding:0 32px;gap:28px}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--c-primary),#FF8A5B);display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;box-shadow:0 6px 14px rgba(255,90,46,.28);flex-shrink:0}
.brand-text{font-size:17px;font-weight:800;color:var(--text-1);letter-spacing:-.2px;white-space:nowrap}
@media (min-width:1024px){.brand-text{font-size:19px}}
.main-nav{display:none;align-items:center;gap:6px;margin-left:8px}
@media (min-width:1024px){.main-nav{display:flex}}
.nav-link{position:relative;display:inline-flex;align-items:center;height:var(--header-h);padding:0 14px;font-size:15px;font-weight:600;color:var(--text-2);transition:color .18s ease}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:14px;height:3px;border-radius:3px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{display:none;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:999px;background:#F2F3F6;border:1px solid transparent;transition:border-color .18s ease,background .18s ease}
@media (min-width:1024px){.search-box{display:flex;width:230px}}
.search-box:focus-within{background:#fff;border-color:var(--c-primary)}
.search-box i{color:var(--text-3);font-size:14px}
.search-box input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--text-1)}
.search-box input::placeholder{color:var(--text-3)}
.header-cta{display:none}
@media (min-width:1024px){.header-cta{display:inline-flex}}
.search-toggle{width:40px;height:40px;border-radius:50%;background:#F2F3F6;color:var(--text-2);display:flex;align-items:center;justify-content:center;font-size:15px}
@media (min-width:1024px){.search-toggle{display:none}}
.nav-toggle{width:42px;height:42px;border-radius:10px;background:#F2F3F6;color:var(--text-1);display:flex;align-items:center;justify-content:center;font-size:17px}
@media (min-width:1024px){.nav-toggle{display:none}}
.mobile-nav{display:none;border-top:1px solid var(--line);background:#fff;padding:8px 20px 20px}
.mobile-nav.is-open{display:block}
.mobile-nav a{display:block;padding:14px 6px;font-size:16px;font-weight:600;color:var(--text-1);border-bottom:1px solid var(--line)}
.mobile-nav a:last-child{border-bottom:0}
.mobile-nav a.is-active{color:var(--c-primary)}
@media (min-width:1024px){.mobile-nav{display:none !important}}

/* ---------- Hero ---------- */
.hero{position:relative;background:#fff;overflow:hidden;padding:44px 0 56px}
@media (min-width:1024px){.hero{padding:76px 0 88px}}
.hero::before{content:"";position:absolute;top:-160px;right:-160px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(255,90,46,.13),rgba(255,90,46,0) 68%);pointer-events:none}
.hero::after{content:"";position:absolute;left:-90px;bottom:-120px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(18,214,160,.14),rgba(18,214,160,0) 70%);pointer-events:none}
.hero-grid{position:relative;z-index:1}
.hero-copy h1{margin-bottom:20px}
.hero-copy h1 .hl{color:var(--c-primary)}
.hero-sub{font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-badges li{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text-2);background:#F5F6F8;border:1px solid var(--line);border-radius:999px;padding:8px 14px}
.hero-badges li i{color:var(--c-accent);font-size:12px}
.hero-visual{position:relative;margin-top:36px}
@media (min-width:1024px){.hero-visual{margin-top:0}}
.hero-media{position:relative;border-radius:var(--r-card-lg);overflow:hidden;aspect-ratio:16/11;box-shadow:var(--shadow-3);clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,18,32,0) 45%,rgba(20,18,32,.55) 100%)}
.hero-float-card{position:absolute;left:18px;bottom:18px;right:18px;z-index:2;background:rgba(255,255,255,.96);border-radius:var(--r-card);padding:16px 18px;box-shadow:var(--shadow-3);border:1px solid rgba(255,255,255,.6);backdrop-filter:blur(6px)}
@media (min-width:1024px){.hero-float-card{left:auto;right:-18px;bottom:28px;width:270px}}
.hero-float-card .float-label{display:inline-block;font-size:12px;font-weight:700;color:var(--c-accent);background:#E4FBF4;border-radius:999px;padding:4px 10px;margin-bottom:8px}
.hero-float-card strong{display:block;font-size:15px;color:var(--text-1);line-height:1.5;margin-bottom:4px}
.hero-float-card .float-meta{font-size:13px;color:var(--text-3)}

/* ---------- 锚点条 ---------- */
.anchor-bar{position:sticky;top:56px;z-index:70;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
@media (min-width:1024px){.anchor-bar{top:var(--header-h)}}
.anchor-inner{display:flex;gap:6px;overflow-x:auto;padding:0 20px;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
@media (min-width:1024px){.anchor-inner{padding:0 32px;gap:14px}}
.anchor-link{position:relative;flex:0 0 auto;padding:16px 4px;font-size:14px;font-weight:600;color:var(--text-3);white-space:nowrap}
@media (min-width:1024px){.anchor-link{font-size:15px;padding:18px 6px}}
.anchor-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px 3px 0 0;background:var(--c-primary);transform:scaleX(0);transform-origin:center;transition:transform .2s ease}
.anchor-link:hover{color:var(--text-1)}
.anchor-link.is-active{color:var(--c-primary)}
.anchor-link.is-active::after{transform:scaleX(1)}

/* ---------- 卖点区 ---------- */
.feature-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.feature-grid{grid-template-columns:1fr 1fr;gap:24px}}
@media (min-width:1024px){.feature-grid{grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto}}
@media (min-width:1024px){.feature-card--main{grid-row:1 / span 2}}
.feature-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;display:flex;flex-direction:column}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D9DCE6}
.feature-card h3{margin-bottom:10px}
.feature-card p{margin-bottom:0;font-size:15px;color:var(--text-2)}
.feature-icon{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;background:var(--c-primary);margin-bottom:18px;box-shadow:0 8px 18px rgba(255,90,46,.24)}
.feature-icon--accent{background:var(--c-accent);color:#043027;box-shadow:0 8px 18px rgba(18,214,160,.26)}
.feature-icon--violet{background:var(--c-accent-2);box-shadow:0 8px 18px rgba(122,92,255,.24)}
.feature-card--main{padding:30px}
@media (min-width:1024px){.feature-card--main{padding:38px}}
.feature-media{margin-top:22px;border-radius:var(--r-card);overflow:hidden;aspect-ratio:16/9}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease}
.feature-card--main:hover .feature-media img{transform:scale(1.03)}
.feature-list{margin-top:18px;display:grid;gap:10px}
.feature-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7}
.feature-list li i{color:var(--c-accent);margin-top:7px;font-size:12px}

/* ---------- 演示区 ---------- */
.demo-row{display:grid;grid-template-columns:1fr;gap:32px;align-items:center;padding:34px 0}
@media (min-width:1024px){.demo-row{grid-template-columns:1fr 1fr;gap:64px;padding:44px 0}}
.demo-row + .demo-row{border-top:1px solid var(--line)}
.demo-media{border-radius:var(--r-card-lg);overflow:hidden;aspect-ratio:16/10;box-shadow:var(--shadow-2);clip-path:polygon(0 0,100% 0,100% 100%,22px 100%,0 calc(100% - 22px))}
.demo-media img{width:100%;height:100%;object-fit:cover}
.demo-copy .demo-title{position:relative;display:inline-block;background:var(--ink-900);color:#fff;font-size:15px;font-weight:700;padding:8px 22px 8px 16px;margin-bottom:20px;clip-path:polygon(0 0,100% 0,calc(100% - 14px) 100%,0 100%)}
.demo-copy h3{font-size:clamp(20px,2.4vw,26px);margin-bottom:14px}
.demo-copy p{color:var(--text-2)}
.demo-points{margin-top:20px;display:grid;gap:12px}
.demo-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.demo-points li span.num{flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:#FFF0EA;color:var(--c-primary);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:5px}
@media (min-width:1024px){.demo-row--reverse .demo-media{order:2}}

/* ---------- 证据区（深色） ---------- */
.evidence{background:var(--ink-900);color:#C7CAD6;position:relative;overflow:hidden}
.evidence::before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);background-size:18px 18px;opacity:.35;pointer-events:none}
.evidence .container{position:relative;z-index:1}
.evidence h2{color:#fff}
.evidence .section-head p{color:#9CA1B4}
.evidence .eyebrow{background:rgba(255,90,46,.16);color:#FF8E68}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin-bottom:44px}
@media (min-width:1024px){.stat-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.stat-card{background:var(--ink-700);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);padding:24px 22px;transition:transform .18s ease,border-color .18s ease}
.stat-card:hover{transform:translateY(-3px);border-color:rgba(255,90,46,.5)}
.stat-num{font-size:clamp(28px,4vw,40px);font-weight:800;color:var(--c-primary);line-height:1.1;letter-spacing:-1px}
.stat-card: nth-child(2) .stat-num{color:var(--c-accent)}
.stat-label{margin-top:8px;font-size:14px;color:#A7ABBC}
.quote-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-bottom:38px}
@media (min-width:768px){.quote-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.quote-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-card);padding:24px;transition:background .18s ease,transform .18s ease}
.quote-card:hover{background:rgba(255,255,255,.07);transform:translateY(-3px)}
.quote-card p{margin:0 0 18px;color:#D6D9E3;font-size:15px}
.quote-user{display:flex;align-items:center;gap:12px}
.quote-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--c-primary),var(--c-accent-2));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;flex:0 0 auto}
.quote-name{font-size:14px;font-weight:600;color:#fff}
.quote-role{font-size:12px;color:#9297AB}
.partner-row{display:flex;flex-wrap:wrap;gap:12px;padding-top:28px;border-top:1px solid rgba(255,255,255,.1)}
.partner-row span{font-size:13px;font-weight:600;color:#9CA1B4;border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:8px 16px;transition:color .18s ease,border-color .18s ease}
.partner-row span:hover{color:#fff;border-color:var(--c-primary)}

/* ---------- 最新信息 ---------- */
.latest-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.latest-head .section-head{margin-bottom:0}
.news-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.news-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D9DCE6}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:#EDEFF4}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:20px 20px 0;flex:1}
.news-body .badge{margin-bottom:12px}
.news-title{font-size:17px;font-weight:700;line-height:1.5;margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a{color:var(--text-1)}
.news-title a:hover{color:var(--c-primary)}
.news-summary{font-size:14px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 20px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3)}
.news-foot .read{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.news-foot .read i{font-size:11px;transition:transform .18s ease}
.news-card:hover .news-foot .read i{transform:translateX(3px)}
.empty-state{background:#fff;border:1px dashed var(--line);border-radius:var(--r-card-lg);padding:56px 24px;text-align:center;color:var(--text-3)}
.empty-state i{font-size:30px;color:#C9CDD8;margin-bottom:14px;display:block}
.empty-state p{margin:0 0 8px;font-size:15px}
.empty-state a{font-weight:600}

/* ---------- 价格 ---------- */
.plan-section{background:#fff}
.plan-grid{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}
@media (min-width:1024px){.plan-grid{grid-template-columns:repeat(3,1fr);gap:26px}}
.plan-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card-lg);padding:30px 26px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;transition:transform .18s ease,box-shadow .18s ease}
.plan-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.plan-card--hot{border-color:var(--c-primary);box-shadow:0 18px 44px rgba(255,90,46,.16);position:relative}
@media (min-width:1024px){.plan-card--hot{transform:translateY(-6px)}.plan-card--hot:hover{transform:translateY(-9px)}}
.plan-tag{position:absolute;top:-13px;left:26px;background:var(--c-primary);color:#fff;font-size:12px;font-weight:700;border-radius:999px;padding:5px 14px}
.plan-name{font-size:19px;font-weight:700;color:var(--text-1);margin-bottom:6px}
.plan-desc{font-size:14px;color:var(--text-3);margin-bottom:20px}
.plan-price{display:flex;align-items:baseline;gap:6px;margin-bottom:22px}
.plan-price strong{font-size:34px;font-weight:800;color:var(--text-1);letter-spacing:-1px}
.plan-price span{font-size:14px;color:var(--text-3)}
.plan-list{display:grid;gap:12px;margin-bottom:28px;flex:1}
.plan-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7}
.plan-list li i{color:var(--c-accent);margin-top:6px;font-size:12px}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.faq-item:hover{border-color:#D6DAE4}
.faq-item.is-open{border-color:rgba(255,90,46,.45);box-shadow:var(--shadow-2)}
.faq-q{width:100%;display:flex;align-items:center;gap:14px;text-align:left;padding:20px 22px;font-size:16px;font-weight:600;color:var(--text-1);line-height:1.6}
.faq-q::before{content:"";flex:0 0 auto;width:4px;height:20px;border-radius:3px;background:var(--c-primary)}
.faq-q .faq-icon{margin-left:auto;flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:#F2F3F6;color:var(--text-2);display:flex;align-items:center;justify-content:center;font-size:12px;transition:transform .2s ease,background .2s ease,color .2s ease}
.faq-item.is-open .faq-q .faq-icon{transform:rotate(180deg);background:var(--c-primary);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 22px 22px 40px;font-size:15px;line-height:1.85;color:var(--text-2)}
.faq-a-inner p:last-child{margin-bottom:0}

/* ---------- 尾部 CTA ---------- */
.cta-band{background:var(--ink-900);color:#C7CAD6;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px);background-size:100% 6px;opacity:.5;pointer-events:none}
.cta-band .container{position:relative;z-index:1}
.cta-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:start}
@media (min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:64px;align-items:center}}
.cta-copy h2{color:#fff;margin-bottom:16px}
.cta-copy p{color:#9CA1B4;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.cta-form{background:#fff;border-radius:var(--r-card-lg);padding:28px;box-shadow:var(--shadow-3)}
@media (min-width:1024px){.cta-form{padding:34px}}
.cta-form h3{font-size:19px;margin-bottom:6px}
.cta-form .form-note{font-size:13px;color:var(--text-3);margin-bottom:20px}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:13px;font-weight:600;color:var(--text-1);margin-bottom:7px}
.form-row input,.form-row textarea{width:100%;height:46px;border-radius:10px;border:1px solid var(--line);background:#FAFBFC;padding:0 14px;font-size:14px;color:var(--text-1);outline:none;transition:border-color .18s ease,box-shadow .18s ease,background .18s ease}
.form-row textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-row input:focus,.form-row textarea:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,90,46,.14);background:#fff}
.form-row input::placeholder,.form-row textarea::placeholder{color:#A9AEBB}
.form-hint{font-size:13px;color:var(--text-3);margin-top:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0F0D1A;color:#9CA1B4;padding:60px 0 0}
@media (min-width:1024px){.site-footer{padding:76px 0 0}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:#8E93A8;margin:18px 0 0;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:#9CA1B4}
.footer-col a:hover{color:var(--c-primary)}
.footer-col li span{font-size:14px;color:#9CA1B4}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#787D92}

/* ---------- 浮动 CTA ---------- */
.float-cta{position:fixed;right:26px;bottom:26px;z-index:90;display:none;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px;box-shadow:var(--shadow-3);opacity:0;transform:translateY(14px);pointer-events:none;transition:opacity .24s ease,transform .24s ease}
@media (min-width:1024px){.float-cta{display:flex}.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}}
.float-cta .to-top{width:42px;height:42px;border-radius:50%;background:#F2F3F6;color:var(--text-1);display:flex;align-items:center;justify-content:center;font-size:14px;transition:background .18s ease,color .18s ease}
.float-cta .to-top:hover{background:var(--ink-900);color:#fff}
.mobile-cta{position:fixed;left:0;right:0;bottom:0;z-index:90;display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.98);border-top:1px solid var(--line);padding:8px 16px;box-shadow:0 -6px 20px rgba(20,18,32,.08);transform:translateY(110%);transition:transform .24s ease}
.mobile-cta.is-visible{transform:translateY(0)}
.mobile-cta .btn{flex:1}
.mobile-cta .to-top{width:44px;height:44px;border-radius:10px;background:#F2F3F6;color:var(--text-1);display:flex;align-items:center;justify-content:center;font-size:15px;flex:0 0 auto}
@media (min-width:1024px){.mobile-cta{display:none}}
body.has-mobile-cta{padding-bottom:64px}
@media (min-width:1024px){body.has-mobile-cta{padding-bottom:0}}

/* roulang page: article */
:root{
  --c-primary:#FF5A2E;
  --c-primary-700:#D93F16;
  --c-accent:#12D6A0;
  --c-accent-2:#7A5CFF;
  --ink-900:#141220;
  --ink-700:#2A2836;
  --text-1:#1B1D23;
  --text-2:#4A4F5A;
  --text-3:#6B7280;
  --bg-page:#F5F6F8;
  --bg-card:#FFFFFF;
  --line:#E6E8EE;
  --shadow-1:0 1px 2px rgba(20,18,32,.06);
  --shadow-2:0 8px 24px rgba(20,18,32,.08);
  --shadow-3:0 16px 40px rgba(20,18,32,.12);
  --radius:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --header-h:68px;
  --ease:.2s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;color:var(--text-1);line-height:1.3;font-weight:700}
p{margin:0}
main{display:block}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{max-width:1280px;padding:0 32px}}
.section{padding:64px 0}
@media (min-width:1024px){.section{padding:88px 0}}
.section-head{margin-bottom:32px}
.section-head h2{font-size:clamp(24px,3.2vw,36px);letter-spacing:-.5px}
.section-head p{margin-top:10px;color:var(--text-3);font-size:15px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;align-items:center;gap:18px;
  height:var(--header-h);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,#FF7A45,#FF4A1C);
  color:#fff;font-size:17px;
  box-shadow:0 4px 12px rgba(255,90,46,.28);
}
.brand-text{font-size:17px;font-weight:800;color:var(--text-1);letter-spacing:-.3px;white-space:nowrap}
.main-nav{display:flex;align-items:stretch;height:var(--header-h);margin-left:14px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:0 14px;
  font-size:15px;font-weight:600;color:var(--text-2);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;
  border-radius:3px 3px 0 0;background:transparent;transition:background var(--ease);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{background:rgba(255,90,46,.3)}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{background:var(--c-primary)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{
  width:200px;height:40px;border-radius:20px;
  border:1px solid var(--line);background:#F5F6F8;
  padding:0 38px 0 16px;font-size:14px;color:var(--text-1);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.search-box input::placeholder{color:#9AA0AC}
.search-box input:focus{
  outline:none;background:#fff;border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(255,90,46,.14);
}
.search-box i{position:absolute;right:15px;font-size:14px;color:var(--text-3);pointer-events:none}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--text-1);
  cursor:pointer;align-items:center;justify-content:center;
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn i{font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(255,90,46,.24)}
.btn-primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--text-1)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);background:#FFF6F3;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-lg{height:48px;padding:0 26px;font-size:16px}

/* ============ 面包屑 ============ */
.crumb-wrap{padding:22px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb i{font-size:10px;color:#C3C7D1}
.breadcrumb .current{color:var(--text-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-head{padding:22px 0 30px;border-bottom:1px solid var(--line)}
.article-head h1{
  font-size:clamp(26px,4vw,42px);
  font-weight:800;line-height:1.22;letter-spacing:-.5px;
  max-width:900px;
}
.meta-bar{
  margin-top:20px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:var(--text-3);
}
.meta-bar .sep{width:1px;height:12px;background:var(--line)}
.meta-bar .meta-item{display:inline-flex;align-items:center;gap:6px}
.share-group{margin-left:auto;display:flex;align-items:center;gap:8px}
.share-btn{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--text-3);display:grid;place-items:center;
  cursor:pointer;font-size:13px;transition:all var(--ease);
}
.share-btn:hover{color:var(--c-primary);border-color:var(--c-primary);background:#FFF6F3}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;line-height:1.6;
}
.badge-cat{background:#FFF1EA;color:var(--c-primary)}
.badge-soft{background:#E9FBF5;color:#0B8F6A}
.badge-outline{background:#F7F6FF;border:1px solid #DCD8FF;color:#5B44D6}

/* ============ 文章主体布局 ============ */
.article-layout{
  display:grid;grid-template-columns:210px minmax(0,760px);
  justify-content:center;gap:56px;align-items:start;
  padding:44px 0 0;
}
.toc{
  position:sticky;top:calc(var(--header-h) + 24px);
  border-left:2px solid var(--line);padding:4px 0 4px 0;
}
.toc h4{font-size:13px;color:var(--text-3);font-weight:600;letter-spacing:.5px;padding-left:14px;margin-bottom:10px}
.toc ol{display:flex;flex-direction:column;gap:2px}
.toc a{
  display:block;padding:6px 0 6px 14px;
  font-size:14px;color:var(--text-2);line-height:1.5;
  border-left:2px solid transparent;margin-left:-2px;
}
.toc a:hover{color:var(--c-primary)}
.toc a.is-active{color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary)}
.toc a.toc-sub{padding-left:26px;font-size:13px;color:var(--text-3)}

.article-card{
  background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--radius-lg);box-shadow:var(--shadow-1);
  padding:34px 34px 40px;
}
@media (max-width:640px){.article-card{padding:22px 18px 26px;border-radius:var(--radius)}}

/* ============ 正文排版 ============ */
.prose{font-size:16.5px;line-height:1.85;color:var(--text-2);word-wrap:break-word}
.prose > *:first-child{margin-top:0}
.prose h2{
  position:relative;
  font-size:clamp(21px,2.6vw,26px);font-weight:700;
  color:var(--text-1);line-height:1.4;
  margin:2.1em 0 .8em;padding-left:16px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;
  border-radius:2px;background:var(--c-primary);
}
.prose h3{font-size:19px;font-weight:600;color:var(--text-1);margin:1.7em 0 .6em}
.prose h4{font-size:17px;font-weight:600;color:var(--text-1);margin:1.4em 0 .5em}
.prose p{margin:0 0 1.05em}
.prose strong{color:var(--text-1);font-weight:600}
.prose ul,.prose ol{margin:0 0 1.2em;display:flex;flex-direction:column;gap:.5em}
.prose ul li{position:relative;padding-left:22px}
.prose ul li::before{
  content:"";position:absolute;left:3px;top:.72em;width:7px;height:7px;
  border-radius:2px;background:var(--c-accent);transform:rotate(45deg);
}
.prose ol{list-style:decimal;padding-left:1.5em}
.prose ol li{padding-left:4px}
.prose ol li::marker{color:var(--c-primary);font-weight:700}
.prose blockquote{
  margin:1.5em 0;padding:16px 20px;
  border-left:4px solid var(--c-primary);background:#FFF7F4;
  border-radius:0 12px 12px 0;color:var(--text-1);font-size:16px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:12px;margin:1.4em auto}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.prose a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}
.prose a:hover{color:var(--c-primary-700)}
.prose code{
  background:#F1F2F6;color:#C13B12;padding:2px 7px;border-radius:6px;
  font-size:.9em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.prose pre{
  background:var(--ink-900);color:#EDEDF2;padding:18px 20px;border-radius:12px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:1.5em 0;
}
.prose pre code{background:transparent;color:inherit;padding:0}
.prose table{
  width:100%;border-collapse:collapse;font-size:15px;
  display:block;overflow-x:auto;margin:1.5em 0;
  border:1px solid var(--line);border-radius:12px;
}
.prose th,.prose td{padding:11px 15px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.prose th{background:#F8F9FB;color:var(--text-1);font-weight:600}
.prose tr:last-child td{border-bottom:none}
.prose hr{border:none;border-top:1px solid var(--line);margin:2.2em 0}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;padding:56px 20px;
  background:#fff;border:1px dashed #D9DDE6;border-radius:var(--radius-lg);
}
.empty-state i{font-size:34px;color:#C3C7D1}
.empty-state h2{font-size:22px;margin:16px 0 8px}
.empty-state p{color:var(--text-3);font-size:15px;margin-bottom:22px}

/* ============ 文章尾部 ============ */
.article-foot{margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.back-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--c-primary)}
.back-link:hover{color:var(--c-primary-700)}
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:26px}
.pn-card{
  display:block;padding:18px 20px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.pn-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#F3D3C8}
.pn-card span{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:8px;letter-spacing:.5px}
.pn-card strong{display:block;font-size:15.5px;font-weight:600;color:var(--text-1);line-height:1.5}
.pn-card:hover strong{color:var(--c-primary)}
.pn-card.next{text-align:right}

/* ============ 卡片 ============ */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr))}
.card{
  display:flex;flex-direction:column;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDEFF3}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:18px 20px 16px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--text-1)}
.card:hover .card-body h3{color:var(--c-primary)}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.7}
.card-foot{
  margin-top:auto;padding:12px 20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.card-foot .more{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.card-foot .more i{font-size:11px;transition:transform var(--ease)}
.card:hover .card-foot .more i{transform:translateX(3px)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:#E9EAF0;
  border-radius:var(--radius-lg);
  padding:52px 44px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:18px 18px;opacity:.9;pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:36px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(22px,3vw,30px);letter-spacing:-.4px}
.cta-band p{margin-top:12px;color:#A9AAB8;font-size:15px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-band .btn-ghost{background:transparent;border-color:rgba(255,255,255,.22);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.08);border-color:#fff;color:#fff}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#A9AAB8;margin-top:72px;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:#8E90A0;max-width:320px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:#9A9CAC}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#7C7E8E;
}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:28px;bottom:28px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  border:none;background:var(--c-primary);color:#fff;cursor:pointer;
  display:grid;place-items:center;font-size:16px;
  box-shadow:var(--shadow-3);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--ease),transform var(--ease),background-color var(--ease),visibility var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-primary-700)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .search-box{display:none}
  .main-nav{
    position:absolute;top:var(--header-h);left:0;right:0;
    height:auto;flex-direction:column;align-items:stretch;
    margin-left:0;padding:10px 16px 16px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-2);
    display:none;
  }
  .main-nav.is-open{display:flex}
  .nav-link{height:46px;border-radius:10px;padding:0 14px}
  .nav-link::after{display:none}
  .nav-link:hover{background:#FFF6F3}
  .nav-link.is-active{background:#FFF1EA}
  .nav-toggle{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding:32px 0 0}
  .toc{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:26px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:640px){
  :root{--header-h:56px}
  .brand-text{font-size:15.5px}
  .header-actions .btn{display:none}
  .article-head h1{font-size:26px}
  .share-group{margin-left:0;width:100%}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .prevnext{grid-template-columns:minmax(0,1fr)}
  .pn-card.next{text-align:left}
  .cta-band{padding:36px 22px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;gap:6px}
  .to-top{right:16px;bottom:18px;width:42px;height:42px}
  .section{padding:56px 0}
}

/* roulang page: category1 */
:root{
  --c-primary:#FF5A2E;
  --c-primary-700:#D93F16;
  --c-primary-soft:#FFF1EB;
  --c-accent:#12D6A0;
  --c-accent-soft:#E7FBF4;
  --c-accent-2:#7A5CFF;
  --ink-900:#141220;
  --ink-700:#2A2836;
  --text-1:#1B1D23;
  --text-2:#4A4F5A;
  --text-3:#6B7280;
  --bg-page:#F5F6F8;
  --bg-card:#FFFFFF;
  --line:#E6E8EE;
  --shadow-1:0 1px 2px rgba(20,18,32,.06);
  --shadow-2:0 8px 24px rgba(20,18,32,.08);
  --shadow-3:0 16px 40px rgba(20,18,32,.12);
  --radius:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--c-primary-700);}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;line-height:1.28;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:56px 0;}
.section-tight{padding:40px 0;}
.section-head{max-width:760px;margin-bottom:28px;}
.section-head h2{font-size:clamp(24px,3.2vw,36px);letter-spacing:-.3px;}
.section-head p{margin-top:10px;color:var(--text-2);margin-bottom:0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--c-primary);text-transform:uppercase;margin-bottom:12px;}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-primary);display:inline-block;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:46px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(255,90,46,.26);}
.btn-primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(217,63,22,.3);}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--text-1);border-color:var(--line);}
.btn-ghost:hover{color:var(--c-primary);border-color:var(--c-primary);background:var(--c-primary-soft);transform:translateY(-2px);}
.btn-light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.32);}
.btn-light:hover{background:#fff;color:var(--ink-900);border-color:#fff;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.link-more{font-weight:600;font-size:14px;border-bottom:2px solid rgba(255,90,46,.35);padding-bottom:2px;}
.link-more:hover{border-bottom-color:var(--c-primary-700);}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:700;line-height:1.7;}
.badge-orange{background:var(--c-primary-soft);color:var(--c-primary-700);}
.badge-green{background:var(--c-accent-soft);color:#0B8E6C;}
.badge-purple{background:#F1EDFF;color:#5B41D8;}
.badge-line{background:transparent;color:var(--text-3);border:1px solid var(--line);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:var(--shadow-1);
}
.header-inner{display:flex;align-items:center;gap:22px;height:var(--header-h);}
.brand{display:flex;align-items:center;gap:10px;flex:none;color:var(--text-1);font-weight:800;font-size:18px;letter-spacing:-.3px;}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--c-primary),#FF8B4E);
  color:#fff;font-size:16px;box-shadow:0 6px 14px rgba(255,90,46,.28);
}
.brand-text{white-space:nowrap;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:6px;}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;font-size:15px;font-weight:600;color:var(--text-2);border-radius:8px;
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-soft);}
.nav-link.is-active{color:var(--c-primary);}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:3px;border-radius:3px;background:var(--c-primary);
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search i{position:absolute;left:14px;color:var(--text-3);font-size:13px;pointer-events:none;}
.nav-search input{
  width:210px;height:40px;border-radius:20px;border:1px solid transparent;background:var(--bg-page);
  padding:0 16px 0 36px;font-size:14px;color:var(--text-1);transition:all .18s ease;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,90,46,.14);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;padding:0;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text-1);margin:3px auto;border-radius:2px;transition:.2s;}

/* ---------- 分类 Hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--ink-900);color:#fff;min-height:380px;display:flex;align-items:center;}
.page-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;opacity:.4;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(600px 300px at 15% 20%,rgba(255,90,46,.36),transparent 65%),
    linear-gradient(100deg,rgba(20,18,32,.94) 0%,rgba(20,18,32,.78) 52%,rgba(20,18,32,.5) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:64px 20px;max-width:1200px;margin:0 auto;width:100%;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:18px;}
.breadcrumb a{color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb span.sep{opacity:.5;}
.page-hero h1{
  color:#fff;font-size:clamp(30px,5vw,50px);font-weight:800;line-height:1.16;letter-spacing:-.6px;max-width:900px;
}
.page-hero .hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,90,46,.18);border:1px solid rgba(255,90,46,.5);color:#FFB59C;font-size:13px;font-weight:700;padding:5px 14px;border-radius:999px;margin-bottom:16px;}
.page-hero .hero-sub{margin:16px 0 0;max-width:720px;font-size:17px;line-height:1.75;color:rgba(255,255,255,.8);}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.hero-points li{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  border-radius:999px;padding:6px 14px;font-size:13px;color:rgba(255,255,255,.86);
}
.hero-points li i{color:var(--c-accent);font-size:12px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

/* ---------- 版本状态条 ---------- */
.status-bar{background:#fff;border-bottom:1px solid var(--line);}
.status-inner{display:flex;flex-wrap:wrap;gap:28px;padding:22px 20px;max-width:1200px;margin:0 auto;}
.status-item{display:flex;flex-direction:column;gap:2px;min-width:150px;}
.status-item strong{font-size:24px;font-weight:800;color:var(--c-primary);letter-spacing:-.5px;line-height:1.2;}
.status-item span{font-size:13px;color:var(--text-3);}
.status-item:nth-child(even) strong{color:#0B8E6C;}

/* ---------- 卡片 ---------- */
.card-grid{margin-bottom:-24px;}
.card-grid .cell{margin-bottom:24px;}
.ucard{
  display:flex;flex-direction:column;height:100%;background:var(--bg-card);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.ucard:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#DADEE8;}
.ucard-media{display:block;position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDEFF4;}
.ucard-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease;}
.ucard:hover .ucard-media img{transform:scale(1.03);}
.ucard-media .badge{position:absolute;left:12px;top:12px;box-shadow:var(--shadow-1);}
.ucard-body{padding:18px 18px 14px;flex:1 1 auto;}
.ucard-title{font-size:19px;font-weight:700;line-height:1.45;margin:0 0 8px;}
.ucard-title a{color:var(--text-1);}
.ucard:hover .ucard-title a{color:var(--c-primary);}
.ucard-text{font-size:14.5px;line-height:1.75;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.ucard-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 18px;border-top:1px solid var(--line);background:#FCFCFD;
}
.meta{font-size:13px;color:var(--text-3);display:inline-flex;align-items:center;gap:6px;}

/* ---------- 补充区：要点 + 时间线 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-1);}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.panel-head h3{font-size:21px;font-weight:700;}
.panel-head .icon{
  width:40px;height:40px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:16px;flex:none;
}
.panel-head.green .icon{background:var(--c-accent-soft);color:#0B8E6C;}
.check-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--text-2);}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list li i{color:var(--c-accent);margin-top:6px;font-size:13px;flex:none;}
.check-list li strong{color:var(--text-1);font-weight:700;}
.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--c-primary),rgba(255,90,46,.15));}
.timeline li{position:relative;padding:0 0 20px 0;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:"";position:absolute;left:-25px;top:8px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--c-primary);
}
.timeline li.done::before{border-color:var(--c-accent);}
.timeline .tl-time{font-size:13px;font-weight:700;color:var(--c-primary);letter-spacing:.02em;}
.timeline .tl-title{font-size:16px;font-weight:700;color:var(--text-1);margin:2px 0 4px;}
.timeline .tl-text{font-size:14px;color:var(--text-2);margin:0;}

/* ---------- 更新节奏条 ---------- */
.rhythm{background:var(--ink-900);color:rgba(255,255,255,.78);position:relative;overflow:hidden;}
.rhythm::before{
  content:"";position:absolute;inset:0;opacity:.05;
  background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:18px 18px;
}
.rhythm .container{position:relative;z-index:2;}
.rhythm h2{color:#fff;}
.rhythm p{color:rgba(255,255,255,.72);}
.rhythm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:26px;}
.rhythm-card{background:var(--ink-700);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:22px;}
.rhythm-card h3{color:#fff;font-size:18px;margin-bottom:8px;}
.rhythm-card p{font-size:14.5px;margin:0;line-height:1.75;}
.rhythm-card .num{font-size:13px;font-weight:800;color:var(--c-accent);letter-spacing:.1em;margin-bottom:10px;display:block;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-1);overflow:hidden;transition:box-shadow .18s ease,border-color .18s ease;}
.faq-item[open]{box-shadow:var(--shadow-2);border-color:#DADEE8;}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;padding:18px 54px 18px 22px;
  font-size:16px;font-weight:600;color:var(--text-1);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:0 4px 4px 0;background:var(--c-primary);}
.faq-item summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--text-3);
  position:absolute;right:22px;top:22px;transition:transform .2s ease,color .2s ease;
}
.faq-item[open] summary::after{transform:rotate(180deg);color:var(--c-primary);}
.faq-item summary:hover{color:var(--c-primary);}
.faq-answer{padding:0 22px 20px 22px;font-size:15px;line-height:1.85;color:var(--text-2);}
.faq-answer p:last-child{margin-bottom:0;}

/* ---------- 尾部 CTA ---------- */
.cta-band{background:var(--ink-900);color:rgba(255,255,255,.78);position:relative;overflow:hidden;}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,46,.34),transparent 68%);
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:start;}
.cta-copy h2{color:#fff;font-size:clamp(24px,3vw,34px);}
.cta-copy p{margin:14px 0 22px;font-size:16px;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-note{font-size:13px;color:rgba(255,255,255,.55);margin-top:16px;}
.form-card{background:#fff;border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-3);}
.form-card h3{font-size:19px;margin-bottom:6px;}
.form-card .form-hint{font-size:13px;color:var(--text-3);margin-bottom:18px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-1);margin-bottom:6px;}
.field input,.field textarea{
  width:100%;height:46px;border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:0 14px;font-size:14.5px;color:var(--text-1);background:#fff;transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:92px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#A5AAB6;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,90,46,.14);}
.form-card .btn{width:100%;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.66);padding-top:56px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li a,.footer-col li span{font-size:14.5px;color:rgba(255,255,255,.66);}
.footer-col li a:hover{color:var(--c-primary);}
.footer-brand .brand{color:#fff;margin-bottom:14px;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.62);margin:0;max-width:340px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.12);padding:18px 0 26px;font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 浮动回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:50;width:48px;height:48px;border-radius:14px;
  background:var(--c-primary);color:#fff;border:0;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-3);opacity:0;visibility:hidden;transform:translateY(10px);transition:all .22s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-primary-700);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .split{grid-template-columns:1fr;}
  .rhythm-grid{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .nav-search input{width:150px;}
}
@media (max-width:899px){
  .main-nav{
    position:absolute;left:0;right:0;top:var(--header-h);
    flex-direction:column;align-items:stretch;gap:0;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow-2);
    padding:8px 18px 14px;display:none;
  }
  .main-nav.is-open{display:flex;}
  .nav-link{padding:12px 6px;font-size:16px;border-radius:8px;}
  .nav-link.is-active::after{left:6px;right:auto;width:24px;bottom:6px;}
  .nav-toggle{display:block;}
  .nav-search{display:none;}
  .header-actions .btn{display:none;}
}
@media (max-width:639px){
  :root{--header-h:56px;}
  .brand{font-size:16px;}
  .brand-mark{width:32px;height:32px;font-size:14px;}
  .section{padding:44px 0;}
  .page-hero{min-height:320px;}
  .page-hero-inner{padding:44px 18px;}
  .page-hero .hero-sub{font-size:15.5px;}
  .hero-actions .btn{flex:1 1 auto;}
  .status-inner{gap:18px;padding:18px 18px;}
  .status-item{min-width:calc(50% - 9px);}
  .status-item strong{font-size:20px;}
  .panel{padding:20px;}
  .ucard-title{font-size:17.5px;}
  .form-card{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .to-top{right:16px;bottom:18px;width:44px;height:44px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#FF5A2E;
  --c-primary-700:#D93F16;
  --c-accent:#12D6A0;
  --c-accent-2:#7A5CFF;
  --ink-900:#141220;
  --ink-700:#2A2836;
  --text-1:#1B1D23;
  --text-2:#4A4F5A;
  --text-3:#6B7280;
  --bg-page:#F5F6F8;
  --bg-card:#FFFFFF;
  --line:#E6E8EE;
  --shadow-1:0 1px 2px rgba(20,18,32,.06);
  --shadow-2:0 8px 24px rgba(20,18,32,.08);
  --shadow-3:0 16px 40px rgba(20,18,32,.12);
  --radius:14px;
  --radius-lg:18px;
  --radius-btn:10px;
  --container:1200px;
  --header-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-1);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-700)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:700;letter-spacing:-.2px}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:1024px){
  .container{padding:0 32px}
}

/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.header-inner{
  display:flex;
  align-items:center;
  height:var(--header-h);
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text-1);
}
.brand:hover{color:var(--text-1)}
.brand-mark{
  width:36px;
  height:36px;
  border-radius:10px;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg,#FF7A45,#FF5A2E 60%,#D93F16);
  color:#fff;
  font-size:16px;
  box-shadow:0 4px 12px rgba(255,90,46,.28);
}
.brand-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:-.3px;
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:28px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:22px 0;
  font-size:15px;
  font-weight:600;
  color:var(--text-2);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link.is-active{color:var(--c-primary)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:14px;
  height:3px;
  border-radius:2px;
  background:var(--c-primary);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:auto;
}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
  gap:8px;
  width:212px;
  height:40px;
  padding:0 14px;
  border-radius:20px;
  background:#F1F2F6;
  border:1px solid transparent;
  transition:border-color .18s ease,background .18s ease;
}
.search-box:focus-within{
  background:#fff;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(255,90,46,.14);
}
.search-box i{color:var(--text-3);font-size:13px}
.search-box input{
  flex:1;
  min-width:0;
  border:0;
  outline:0;
  background:transparent;
  font-size:14px;
  color:var(--text-1);
}
.search-box input::placeholder{color:#9AA0AC}
.menu-toggle{
  display:none;
  width:40px;
  height:40px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text-1);
  font-size:16px;
  cursor:pointer;
}
.menu-toggle:hover{border-color:var(--c-primary);color:var(--c-primary)}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:12px 0 18px;
}
.mobile-panel.is-open{display:block}
.mobile-panel .container{display:flex;flex-direction:column;gap:4px}
.mobile-panel a{
  display:block;
  padding:12px 4px;
  font-size:15px;
  font-weight:600;
  color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.is-active{color:var(--c-primary)}
.mobile-panel .btn{margin-top:14px;justify-content:center}

/* ============ buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  text-align:center;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 4px 14px rgba(255,90,46,.26)}
.btn-primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--text-1);border-color:var(--line)}
.btn-ghost:hover{color:var(--c-primary);border-color:var(--c-primary);background:#FFF4F0;transform:translateY(-2px)}
.btn-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.32)}
.btn-light:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--ink-900)}
.btn-white:hover{background:#fff;color:var(--c-primary);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-block{width:100%}

/* ============ badges ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  line-height:1.7;
  background:#FFF0EA;
  color:var(--c-primary-700);
  white-space:nowrap;
}
.badge-accent{background:#E4FBF3;color:#0B8E6B}
.badge-plain{background:#F1F2F6;color:var(--text-2)}
.badge-outline{background:transparent;border:1px solid rgba(122,92,255,.4);color:#5B44CC}
.hero-cat .badge{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.2)}

/* ============ hero ============ */
.hero-cat{
  position:relative;
  isolation:isolate;
  color:#fff;
  background:var(--ink-900) url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  overflow:hidden;
}
.hero-cat::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(102deg,rgba(20,18,32,.95) 0%,rgba(20,18,32,.86) 42%,rgba(20,18,32,.58) 100%);
  z-index:-1;
}
.hero-cat::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:18px 18px;
  pointer-events:none;
}
.hero-cat .container{
  position:relative;
  z-index:2;
  padding-top:56px;
  padding-bottom:56px;
}
.hero-cat h1{
  color:#fff;
  font-size:clamp(28px,4.2vw,44px);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.5px;
  margin:16px 0 14px;
  max-width:820px;
}
.hero-cat .hero-sub{
  max-width:660px;
  font-size:16px;
  line-height:1.85;
  color:rgba(255,255,255,.82);
  margin-bottom:22px;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:rgba(255,255,255,.62);
}
.breadcrumb a{color:rgba(255,255,255,.72)}
.breadcrumb a:hover{color:#fff}
.breadcrumb i{font-size:10px;opacity:.6}
.hero-note{
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  font-size:13px;
  color:rgba(255,255,255,.66);
}
.hero-note span{display:inline-flex;align-items:center;gap:7px}
.hero-note i{color:var(--c-accent)}

/* ============ sections ============ */
.section{padding:56px 0}
@media (min-width:1024px){
  .section{padding:88px 0}
}
.section-alt{background:#fff}
.section-ink{
  position:relative;
  background:var(--ink-900);
  color:#fff;
  overflow:hidden;
}
.section-ink::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 7px);
  pointer-events:none;
}
.section-ink .container{position:relative;z-index:1}
.section-ink h2,.section-ink h3,.section-ink h4{color:#fff}
.section-ink p{color:rgba(255,255,255,.76)}
.section-head{max-width:740px;margin-bottom:34px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:1.5px;
  color:var(--c-primary);
  text-transform:uppercase;
  margin-bottom:10px;
}
.section-ink .eyebrow{color:var(--c-accent)}
.section-head h2{
  font-size:clamp(23px,3vw,34px);
  font-weight:700;
  line-height:1.28;
  margin-bottom:12px;
}
.section-head p{color:var(--text-2);margin:0}
.section-ink .section-head p{color:rgba(255,255,255,.72)}
.section-foot{margin-top:34px;text-align:center}

/* ============ chips ============ */
.chip-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  padding:14px 16px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-1);
  margin-bottom:30px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 16px;
  font-size:14px;
  font-weight:600;
  color:var(--text-2);
  background:#F6F7FA;
  border:1px solid transparent;
  border-radius:999px;
  cursor:pointer;
  transition:all .18s ease;
}
.chip:hover{color:var(--c-primary);background:#FFF2EC}
.chip.is-active{
  color:var(--c-primary);
  background:#FFF2EC;
  border-color:var(--c-primary);
  box-shadow:inset 0 0 0 1px rgba(255,90,46,.2);
}

/* ============ cards ============ */
.card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D9DCE4}
.card-media{
  display:block;
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#EDEFF3;
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .28s ease;
}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:18px 20px 20px;
  flex:1;
}
.card-title{
  font-size:18px;
  font-weight:600;
  line-height:1.45;
  letter-spacing:-.2px;
}
.card-title a{color:var(--text-1);display:block}
.card-title a:hover{color:var(--c-primary)}
.card-desc{
  margin:0;
  font-size:14.5px;
  line-height:1.75;
  color:var(--text-2);
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top:auto;
  padding:14px 20px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--c-primary);
}
.link-more i{font-size:11px;transition:transform .18s ease}
.link-more:hover i{transform:translateX(3px)}

/* feature card */
.card-feature{
  height:100%;
  border-radius:var(--radius-lg);
}
.card-feature .card-media{aspect-ratio:16/10}
.card-feature .card-body{padding:24px 26px}
.card-feature .card-title{font-size:22px;line-height:1.4}
.card-feature .card-desc{-webkit-line-clamp:4;font-size:15px}
.point-list{margin:6px 0 0;display:flex;flex-direction:column;gap:9px}
.point-list li{
  position:relative;
  padding-left:22px;
  font-size:14.5px;
  line-height:1.7;
  color:var(--text-2);
}
.point-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--c-accent);
}
.card-feature .card-foot{padding:16px 26px}

/* ============ compare ============ */
.compare-grid{display:grid;gap:22px;grid-template-columns:1fr}
@media (min-width:900px){
  .compare-grid{grid-template-columns:1fr 1fr}
}
.compare-card{
  position:relative;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px 24px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease,transform .18s ease;
}
.compare-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.compare-card.is-primary{
  border-color:rgba(255,90,46,.34);
  background:linear-gradient(180deg,#FFF8F5,#fff 42%);
}
.compare-card.is-primary::after{
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:74px;
  height:74px;
  background:linear-gradient(225deg,rgba(255,90,46,.14),transparent 70%);
  clip-path:polygon(100% 0,0 0,100% 100%);
  border-top-right-radius:var(--radius);
}
.compare-card h3{font-size:20px;margin-bottom:6px}
.compare-card .compare-tag{
  display:inline-block;
  font-size:12.5px;
  font-weight:700;
  color:var(--c-accent-2);
  letter-spacing:.5px;
  margin-bottom:10px;
}
.compare-list{margin-top:16px;display:flex;flex-direction:column;gap:12px}
.compare-list li{
  display:flex;
  gap:10px;
  font-size:14.5px;
  line-height:1.72;
  color:var(--text-2);
}
.compare-list i{
  margin-top:6px;
  font-size:12px;
  color:var(--c-primary);
  flex:0 0 auto;
}
.compare-list.is-good i{color:var(--c-accent)}
.compare-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--line);
  font-size:13.5px;
  color:var(--text-3);
}
.media-block{
  margin-top:26px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  position:relative;
  border:1px solid var(--line);
  background:#fff;
  box-shadow:var(--shadow-1);
}
.media-block img{
  width:100%;
  aspect-ratio:21/9;
  object-fit:cover;
}
.media-caption{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  padding:16px 22px;
  font-size:14px;
  color:var(--text-2);
  border-top:1px solid var(--line);
  background:#fff;
}
.media-caption i{color:var(--c-primary)}

/* ============ pitfalls ============ */
.pit-grid{display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:700px){.pit-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1100px){.pit-grid{grid-template-columns:repeat(2,1fr)}}
.pit-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 22px 20px;
  box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease,transform .18s ease;
}
.pit-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.pit-row{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:12px 0;
  border-bottom:1px dashed var(--line);
  font-size:14.5px;
  line-height:1.72;
}
.pit-row:last-child{border-bottom:0;padding-bottom:0}
.pit-row .pit-label{
  flex:0 0 auto;
  margin-top:2px;
  padding:2px 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  line-height:1.7;
}
.pit-label.wrong{background:#FDECEC;color:#C0392B}
.pit-label.right{background:#E4FBF3;color:#0B8E6B}
.pit-row p{margin:0;color:var(--text-2)}
.pit-card h3{font-size:18px;margin-bottom:8px}

/* ============ stats ============ */
.stat-row{
  display:grid;
  gap:20px;
  grid-template-columns:repeat(2,1fr);
  margin-bottom:38px;
}
@media (min-width:900px){.stat-row{grid-template-columns:repeat(4,1fr);gap:24px}}
.stat{
  padding:22px 20px;
  border-radius:var(--radius);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
}
.stat strong{
  display:block;
  font-size:clamp(24px,3vw,32px);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.5px;
  color:var(--c-accent);
}
.stat span{display:block;margin-top:6px;font-size:13.5px;color:rgba(255,255,255,.7)}
.quote-row{display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:820px){.quote-row{grid-template-columns:repeat(3,1fr)}}
.quote{
  background:var(--ink-700);
  border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);
  padding:22px;
}
.quote p{margin:0 0 16px;font-size:14.5px;line-height:1.78;color:rgba(255,255,255,.82)}
.quote-user{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.6)}
.avatar{
  width:34px;height:34px;border-radius:50%;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(255,90,46,.9),rgba(122,92,255,.75));
  color:#fff;font-size:13px;font-weight:700;
}

/* ============ faq ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.faq-item:hover{border-color:#D9DCE4}
.faq-item.is-open{
  border-color:rgba(255,90,46,.35);
  box-shadow:var(--shadow-1);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:18px 20px 18px 22px;
  background:transparent;
  border:0;
  text-align:left;
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  color:var(--text-1);
  cursor:pointer;
}
.faq-q::before{
  content:"";
  flex:0 0 auto;
  width:4px;
  align-self:stretch;
  min-height:22px;
  border-radius:2px;
  background:var(--c-primary);
}
.faq-q span{flex:1}
.faq-q i{
  flex:0 0 auto;
  margin-top:5px;
  font-size:13px;
  color:var(--text-3);
  transition:transform .2s ease,color .2s ease;
}
.faq-item.is-open .faq-q i{transform:rotate(180deg);color:var(--c-primary)}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .24s ease;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{
  margin:0;
  padding:0 20px 20px 40px;
  font-size:14.5px;
  line-height:1.82;
  color:var(--text-2);
}

/* ============ cta ============ */
.cta-band{
  position:relative;
  background:var(--ink-900);
  color:#fff;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(1000px 380px at 82% 8%,rgba(255,90,46,.22),transparent 62%),
             radial-gradient(700px 320px at 6% 96%,rgba(18,214,160,.16),transparent 60%);
  pointer-events:none;
}
.cta-band .container{position:relative;z-index:1}
.cta-grid{display:grid;gap:36px;grid-template-columns:1fr}
@media (min-width:960px){.cta-grid{grid-template-columns:1.05fr .95fr;align-items:start;gap:56px}}
.cta-band h2{
  color:#fff;
  font-size:clamp(24px,3.2vw,34px);
  line-height:1.3;
  margin-bottom:14px;
}
.cta-band p{color:rgba(255,255,255,.76);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.cta-points{margin-top:28px;display:flex;flex-direction:column;gap:12px}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.78)}
.cta-points i{color:var(--c-accent);margin-top:6px;font-size:12px}
.form-card{
  background:#fff;
  border-radius:var(--radius-lg);
  padding:26px 24px 24px;
  box-shadow:var(--shadow-3);
  color:var(--text-1);
}
.form-card h3{font-size:19px;margin-bottom:6px}
.form-card .form-tip{font-size:13.5px;color:var(--text-3);margin-bottom:20px}
.field{margin-bottom:16px}
.field label{
  display:block;
  font-size:13px;
  font-weight:600;
  color:var(--text-2);
  margin-bottom:7px;
}
.field input,
.field textarea{
  width:100%;
  min-height:46px;
  padding:11px 14px;
  font-size:14.5px;
  font-family:inherit;
  color:var(--text-1);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  outline:0;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input:focus,
.field textarea:focus{
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(255,90,46,.14);
}
.field input::placeholder,
.field textarea::placeholder{color:#A2A8B4}
.form-note{font-size:12.5px;color:var(--text-3);margin:12px 0 0;line-height:1.7}

/* ============ footer ============ */
.site-footer{
  background:#101018;
  color:rgba(255,255,255,.72);
  padding:56px 0 0;
  font-size:14.5px;
}
.footer-grid{
  display:grid;
  gap:32px;
  grid-template-columns:1fr;
  padding-bottom:40px;
}
@media (min-width:700px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.site-footer .brand{color:#fff;margin-bottom:14px}
.site-footer .brand:hover{color:#fff}
.footer-brand p{margin:0;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.footer-col h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,
.footer-col span{font-size:14px;color:rgba(255,255,255,.64);line-height:1.7}
.footer-col a:hover{color:var(--c-primary)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;
  color:rgba(255,255,255,.48);
}

/* ============ back to top ============ */
.to-top{
  position:fixed;
  right:24px;
  bottom:26px;
  z-index:70;
  width:46px;
  height:46px;
  border-radius:14px;
  display:grid;
  place-items:center;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text-1);
  font-size:15px;
  cursor:pointer;
  box-shadow:var(--shadow-2);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s ease,color .18s ease,border-color .18s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--c-primary);border-color:var(--c-primary)}

/* ============ responsive ============ */
@media (max-width:1023px){
  .main-nav{display:none}
  .menu-toggle{display:grid;place-items:center}
  .search-box{display:none}
  .nav-link{padding:12px 0}
  .nav-link.is-active::after{display:none}
}
@media (max-width:767px){
  .header-inner{gap:14px}
  .brand-text{font-size:15.5px}
  .hero-cat .container{padding-top:40px;padding-bottom:44px}
  .hero-actions .btn{flex:1 1 auto}
  .card-feature .card-body{padding:20px}
  .card-feature .card-title{font-size:19px}
  .faq-q{padding:16px 16px 16px 18px;font-size:15px}
  .faq-a p{padding:0 16px 18px 34px}
  .to-top{right:16px;bottom:16px;width:42px;height:42px}
  .form-card{padding:22px 18px 20px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .header-actions .btn-sm{display:none}
  .brand-text{font-size:15px}
}