/* roulang page: index */
:root{
  --brand:#12B886;
  --brand-dark:#0E9C74;
  --brand-light:#2FE0AC;
  --accent:#FF7A2F;
  --accent-dark:#E4621A;
  --amber:#FFD75E;
  --ink:#101A1C;
  --ink-2:#16242A;
  --paper:#F6F7F4;
  --surface:#FFFFFF;
  --line:#E3E7E2;
  --text:#1E2A2C;
  --text-2:#5C6B6C;
  --text-inv:#FFFFFF;
  --text-inv-2:#A9BCBB;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(16,26,28,.06);
  --sh-2:0 8px 24px -12px rgba(16,26,28,.18);
  --sh-3:0 24px 48px -24px rgba(16,26,28,.28);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease);}
a:hover{color:var(--brand-dark);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-0.01em;line-height:1.28;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 公告条 ---------- */
.notice-bar{background:var(--ink);color:var(--text-inv-2);font-size:13px;letter-spacing:.02em;}
.notice-bar .inner{display:flex;align-items:center;gap:12px;min-height:40px;}
.notice-bar i{color:var(--brand-light);}
.notice-bar .txt{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.notice-bar .close-btn{color:var(--text-inv-2);width:28px;height:28px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;transition:background var(--ease),color var(--ease);}
.notice-bar .close-btn:hover{background:rgba(255,255,255,.08);color:#fff;}
.notice-bar.is-hidden{display:none;}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:height var(--ease),box-shadow var(--ease),border-color var(--ease);}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;height:76px;transition:height var(--ease);}
.site-header.is-scrolled .nav-wrap{height:64px;}
.nav-side{display:flex;align-items:center;gap:30px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-item{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 0;}
.nav-item::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-light));transform:scaleX(0);transform-origin:left;transition:transform var(--ease);}
.nav-item:hover{color:var(--brand-dark);}
.nav-item:hover::after{transform:scaleX(1);}
.nav-item.active{color:var(--brand-dark);font-weight:600;}
.nav-item.active::after{transform:scaleX(1);}
.brand{display:flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{width:38px;height:38px;flex:0 0 38px;border-radius:11px;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);position:relative;overflow:hidden;box-shadow:var(--sh-2);}
.brand-mark::before{content:"";position:absolute;inset:9px 9px 9px 9px;border:2px solid rgba(255,255,255,.9);border-radius:50%;}
.brand-mark::after{content:"";position:absolute;top:-6px;left:-14px;width:60px;height:8px;background:rgba(255,255,255,.35);transform:rotate(-38deg);}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text b{font-size:19px;font-weight:800;letter-spacing:-0.02em;color:var(--ink);}
.brand-text span{font-size:11px;letter-spacing:.22em;color:var(--text-2);}
.btn-login{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 20px;border-radius:var(--r-btn);background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);color:#fff;font-size:14px;font-weight:600;box-shadow:var(--sh-2);transition:transform var(--ease),box-shadow var(--ease),filter var(--ease);}
.btn-login:hover{color:#fff;filter:brightness(1.06);box-shadow:var(--sh-3);}
.btn-login:active{transform:translateY(1px);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;color:var(--ink);align-items:center;justify-content:center;font-size:17px;}
.mobile-drawer{background:var(--ink);color:#fff;width:300px;}
.mobile-drawer .offcanvas-header{border-bottom:1px solid rgba(255,255,255,.08);}
.mobile-drawer .offcanvas-title{font-size:16px;font-weight:700;color:#fff;}
.mobile-drawer .btn-close{filter:invert(1) grayscale(1) brightness(2);}
.mobile-drawer .drawer-link{display:block;padding:14px 0;font-size:16px;color:#fff;border-bottom:1px solid rgba(255,255,255,.08);}
.mobile-drawer .drawer-link.active{color:var(--brand-light);}
.mobile-drawer .btn-login{width:100%;justify-content:center;margin-top:22px;height:48px;}

/* ---------- 通用按钮 ---------- */
.btn-main{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 28px;border-radius:999px;background:linear-gradient(135deg,var(--accent) 0%,var(--accent-dark) 100%);color:#fff;font-size:15px;font-weight:600;box-shadow:0 10px 24px -12px rgba(228,98,26,.75);transition:transform var(--ease),box-shadow var(--ease),filter var(--ease);}
.btn-main:hover{color:#fff;filter:brightness(1.05);box-shadow:0 16px 30px -12px rgba(228,98,26,.8);transform:translateY(-1px);}
.btn-main:active{transform:translateY(1px);}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 26px;border-radius:999px;border:1px solid rgba(255,255,255,.5);color:#fff;font-size:15px;font-weight:600;transition:background var(--ease),border-color var(--ease);}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}
.btn-light{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:48px;padding:0 26px;border-radius:var(--r-btn);background:#fff;border:1px solid var(--line);color:var(--ink);font-size:15px;font-weight:600;transition:border-color var(--ease),color var(--ease),box-shadow var(--ease);}
.btn-light:hover{border-color:var(--brand);color:var(--brand-dark);box-shadow:var(--sh-2);}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-dark);}
.btn-text i{transition:transform var(--ease);font-size:12px;}
.btn-text:hover i{transform:translateX(3px);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background-color:var(--ink);background-image:linear-gradient(180deg,rgba(16,26,28,.74) 0%,rgba(16,26,28,.86) 55%,rgba(16,26,28,.96) 100%),url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;min-height:640px;display:flex;align-items:center;padding:88px 0;}
.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:64px 64px;opacity:.5;pointer-events:none;}
.hero::after{content:"";position:absolute;top:-160px;right:-120px;width:620px;height:420px;background:linear-gradient(120deg,rgba(47,224,172,.22),rgba(47,224,172,0) 70%);transform:rotate(-16deg);pointer-events:none;}
.hero .container{position:relative;z-index:2;}
.hero-tag{display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;border:1px solid rgba(47,224,172,.45);background:rgba(47,224,172,.1);color:var(--brand-light);font-size:13px;letter-spacing:.08em;margin-bottom:26px;}
.hero h1{font-size:56px;font-weight:800;color:#fff;letter-spacing:-0.01em;max-width:820px;}
.hero h1 em{font-style:normal;color:var(--brand-light);}
.hero-sub{margin-top:20px;font-size:17px;color:var(--text-inv-2);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}
.hero-metrics{display:flex;flex-wrap:wrap;gap:0;margin-top:56px;padding-top:28px;border-top:1px solid rgba(255,255,255,.12);}
.metric{flex:1 1 180px;padding:0 26px;border-left:1px solid rgba(255,255,255,.16);}
.metric:first-child{border-left:0;padding-left:0;}
.metric b{display:block;font-size:34px;font-weight:800;color:#fff;line-height:1.2;}
.metric b small{font-size:14px;font-weight:600;color:var(--text-inv-2);margin-left:4px;}
.metric span{display:block;font-size:13px;color:var(--text-inv-2);margin-top:6px;letter-spacing:.02em;}

/* ---------- 通用板块 ---------- */
.section{padding:104px 0;}
.section-sm{padding:76px 0;}
.sec-head{max-width:720px;margin-bottom:52px;}
.sec-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.16em;color:var(--brand-dark);text-transform:uppercase;margin-bottom:14px;}
.sec-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand);}
.sec-head h2{font-size:36px;font-weight:700;color:var(--ink);}
.sec-head p{margin-top:14px;color:var(--text-2);font-size:16px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:52px;}
.sec-head-row h2{font-size:36px;font-weight:700;color:var(--ink);}
.sec-head-row p{margin-top:12px;color:var(--text-2);max-width:600px;}

/* ---------- 玩法步骤 ---------- */
.steps-layout{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start;}
.step-list{position:relative;}
.step-item{position:relative;display:grid;grid-template-columns:88px 1fr;gap:18px;padding-bottom:38px;}
.step-item:last-child{padding-bottom:0;}
.step-item::before{content:"";position:absolute;left:33px;top:66px;bottom:6px;width:1px;border-left:1px dashed var(--line);}
.step-item:last-child::before{display:none;}
.step-no{font-size:34px;font-weight:800;color:transparent;-webkit-text-stroke:1.5px var(--brand);line-height:1;letter-spacing:-0.02em;}
.step-item h3{font-size:22px;font-weight:600;color:var(--ink);}
.step-item p{margin-top:8px;color:var(--text-2);font-size:15px;max-width:520px;}
.step-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-3);}
.step-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;border-radius:var(--r-card);}
.step-media figcaption{position:absolute;left:0;right:0;bottom:0;padding:18px 20px;background:linear-gradient(180deg,rgba(16,26,28,0),rgba(16,26,28,.88));color:#fff;font-size:14px;}

/* ---------- 奖励阶梯 ---------- */
.reward-wrap{border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);overflow:hidden;box-shadow:var(--sh-1);}
.reward-head,.reward-row{display:grid;grid-template-columns:200px 1fr 1fr;gap:16px;align-items:center;padding:0 24px;}
.reward-head{height:54px;background:var(--ink);color:var(--text-inv-2);font-size:13px;letter-spacing:.06em;}
.reward-row{min-height:64px;font-size:15px;color:var(--text-2);border-top:1px solid var(--line);}
.reward-row:nth-child(odd){background:var(--paper);}
.reward-row .lv{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:600;}
.lv-badge{display:inline-flex;align-items:center;justify-content:center;min-width:52px;height:26px;border-radius:var(--r-badge);font-size:12px;font-weight:700;color:#fff;letter-spacing:.04em;}
.lv-1{background:var(--brand);}
.lv-2{background:var(--brand-dark);}
.lv-3{background:var(--accent);}
.lv-4{background:var(--accent-dark);}
.lv-5{background:var(--ink-2);}
.reward-scroll{overflow-x:auto;}
.reward-scroll .reward-head,.reward-scroll .reward-row{min-width:760px;}

/* ---------- 任务进度深色通栏 ---------- */
.band{background:var(--ink);color:#fff;padding:96px 0;position:relative;overflow:hidden;}
.band::after{content:"";position:absolute;left:-160px;bottom:-200px;width:520px;height:420px;background:radial-gradient(circle,rgba(18,184,134,.28),rgba(18,184,134,0) 70%);pointer-events:none;}
.band .container{position:relative;z-index:2;}
.band-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;}
.band-head h2{font-size:36px;font-weight:700;color:#fff;}
.band-head p{margin-top:12px;color:var(--text-inv-2);max-width:560px;}
.band-chip{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.05);font-size:13px;color:var(--brand-light);letter-spacing:.04em;}
.progress-line{position:relative;height:10px;border-radius:999px;background:rgba(255,255,255,.14);overflow:hidden;}
.progress-line span{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:linear-gradient(90deg,var(--brand) 0%,var(--brand-light) 55%,var(--accent) 100%);}
.progress-meta{display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-size:13px;color:var(--text-inv-2);}
.progress-meta b{color:#fff;font-size:20px;font-weight:800;}
.progress-nodes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px;}
.progress-nodes .node{display:flex;align-items:center;gap:12px;padding:18px;border-radius:var(--r-card);border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.03);}
.progress-nodes .node i{width:14px;height:14px;border-radius:50%;flex:0 0 14px;border:1px solid rgba(255,255,255,.4);}
.progress-nodes .node.done i{background:var(--brand-light);border-color:var(--brand-light);box-shadow:0 0 0 4px rgba(47,224,172,.16);}
.progress-nodes .node b{display:block;font-size:15px;color:#fff;font-weight:600;}
.progress-nodes .node span{display:block;font-size:13px;color:var(--text-inv-2);margin-top:2px;}

/* ---------- 资讯列表 ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;}
.filter-chip{padding:8px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;color:var(--text-2);transition:border-color var(--ease),color var(--ease),background var(--ease);}
.filter-chip.is-on{background:var(--ink);border-color:var(--ink);color:#fff;}
.filter-chip:hover{border-color:var(--brand);color:var(--brand-dark);}
.post-card{display:block;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(18,184,134,.4);color:inherit;}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper);}
.post-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease-out;}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-tag{position:absolute;left:14px;top:14px;padding:5px 12px;border-radius:var(--r-badge);background:rgba(16,26,28,.78);color:var(--brand-light);font-size:12px;letter-spacing:.04em;}
.post-body{padding:22px 24px 24px;}
.post-title{font-size:18px;font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:52px;}
.post-excerpt{margin-top:10px;font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-2);}
.post-meta .more{color:var(--brand-dark);font-weight:600;}
.empty-state{text-align:center;padding:64px 20px;border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;}
.empty-state i{font-size:34px;color:var(--brand);}
.empty-state p{margin-top:16px;font-size:15px;color:var(--text-2);}
.empty-state .btn-light{margin-top:20px;}

/* ---------- 数据证明 ---------- */
.proof{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.proof-cell{padding:28px 24px;border-radius:var(--r-card);border:1px solid var(--line);background:var(--paper);transition:transform var(--ease),box-shadow var(--ease);}
.proof-cell:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.proof-cell b{display:block;font-size:32px;font-weight:800;color:var(--ink);}
.proof-cell b small{font-size:14px;color:var(--text-2);font-weight:600;margin-left:4px;}
.proof-cell span{display:block;margin-top:8px;font-size:14px;color:var(--text-2);}
.quote-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px;}
.quote{padding:26px;border-radius:var(--r-card);border:1px solid var(--line);background:var(--surface);}
.quote i{color:var(--amber);font-size:13px;letter-spacing:2px;}
.quote p{margin-top:12px;font-size:15px;color:var(--text);line-height:1.8;}
.quote span{display:block;margin-top:14px;font-size:13px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.faq-aside h2{font-size:36px;font-weight:700;color:var(--ink);}
.faq-aside p{margin-top:16px;color:var(--text-2);font-size:15px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;gap:16px;padding:24px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);transition:color var(--ease);}
.faq-q .idx{font-size:14px;font-weight:700;color:var(--brand-dark);font-variant-numeric:tabular-nums;flex:0 0 28px;}
.faq-q .sign{margin-left:auto;width:26px;height:26px;position:relative;flex:0 0 26px;}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;left:50%;top:50%;background:var(--text-2);transition:transform var(--ease),background var(--ease);}
.faq-q .sign::before{width:14px;height:2px;transform:translate(-50%,-50%);}
.faq-q .sign::after{width:2px;height:14px;transform:translate(-50%,-50%);}
.faq-q[aria-expanded="true"]{color:var(--brand-dark);}
.faq-q[aria-expanded="true"] .sign::before{background:var(--brand-dark);}
.faq-q[aria-expanded="true"] .sign::after{transform:translate(-50%,-50%) rotate(90deg);background:var(--brand-dark);}
.faq-a{padding:0 0 26px 44px;font-size:15px;color:var(--text-2);line-height:1.9;max-width:720px;}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink-2);color:#fff;padding:88px 0;position:relative;overflow:hidden;}
.cta-band::after{content:"";position:absolute;right:-140px;top:-120px;width:520px;height:380px;background:linear-gradient(120deg,rgba(255,122,47,.26),rgba(255,122,47,0) 70%);transform:rotate(-14deg);}
.cta-band .container{position:relative;z-index:2;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{font-size:34px;font-weight:700;color:#fff;max-width:640px;}
.cta-inner p{margin-top:12px;color:var(--text-inv-2);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 登录引导面板 ---------- */
.login-panel{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:center;background:var(--ink);border-radius:var(--r-card);padding:44px;color:#fff;position:relative;overflow:hidden;}
.login-panel::after{content:"";position:absolute;left:-80px;bottom:-120px;width:340px;height:300px;background:radial-gradient(circle,rgba(18,184,134,.3),rgba(18,184,134,0) 70%);}
.login-panel > *{position:relative;z-index:2;}
.login-copy{display:flex;gap:18px;}
.login-copy .ico{width:52px;height:52px;flex:0 0 52px;border-radius:14px;background:rgba(47,224,172,.14);border:1px solid rgba(47,224,172,.3);display:flex;align-items:center;justify-content:center;color:var(--brand-light);font-size:20px;}
.login-copy h3{font-size:22px;font-weight:600;color:#fff;}
.login-copy p{margin-top:8px;font-size:14px;color:var(--text-inv-2);}
.login-fields{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:center;}
.login-fields input{height:48px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.16);background:#fff;padding:0 16px;font-size:14px;color:var(--text);}
.login-fields input::placeholder{color:#93A2A1;}
.login-fields input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,184,134,.22);}
.login-fields .btn-main{min-height:48px;padding:0 24px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--text-inv-2);padding:72px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:40px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-text b{color:#fff;}
.footer-brand .brand-text span{color:var(--text-inv-2);}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.02em;}
.site-footer li{margin-bottom:11px;}
.site-footer a{color:var(--text-inv-2);}
.site-footer a:hover{color:var(--brand-light);}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center;color:var(--text-inv-2);transition:border-color var(--ease),color var(--ease),background var(--ease);}
.footer-social a:hover{border-color:var(--brand-light);color:var(--brand-light);background:rgba(47,224,172,.08);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(169,188,187,.85);}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero h1{font-size:44px;}
  .steps-layout{gap:40px;}
  .quote-row{grid-template-columns:repeat(2,1fr);}
  .proof-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .container{padding-left:24px;padding-right:24px;}
  .nav-side{display:none;}
  .nav-wrap{grid-template-columns:auto 1fr auto;height:68px;}
  .site-header.is-scrolled .nav-wrap{height:60px;}
  .nav-toggle{display:inline-flex;}
  .hero{min-height:auto;padding:72px 0;}
  .hero h1{font-size:40px;}
  .section{padding:76px 0;}
  .section-sm{padding:60px 0;}
  .sec-head h2,.sec-head-row h2,.band-head h2,.faq-aside h2{font-size:28px;}
  .steps-layout{grid-template-columns:1fr;}
  .step-media{order:-1;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .login-panel{grid-template-columns:1fr;padding:32px;}
  .login-fields{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:34px;}
  .cta-inner h2{font-size:27px;}
  .progress-nodes{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px;}
  body{font-size:15px;}
  .hero{padding:56px 0;}
  .hero h1{font-size:32px;}
  .hero-sub{font-size:15px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .hero-metrics{margin-top:40px;padding-top:22px;}
  .metric{flex:1 1 100%;border-left:0;padding:12px 0;border-top:1px solid rgba(255,255,255,.1);}
  .metric:first-child{border-top:0;padding-top:0;}
  .metric b{font-size:26px;}
  .section{padding:58px 0;}
  .section-sm{padding:48px 0;}
  .sec-head{margin-bottom:32px;}
  .sec-head h2,.sec-head-row h2,.band-head h2,.faq-aside h2{font-size:24px;}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px;}
  .step-item{grid-template-columns:60px 1fr;gap:14px;}
  .step-no{font-size:26px;}
  .step-item h3{font-size:18px;}
  .step-item::before{left:22px;}
  .band{padding:64px 0;}
  .proof-grid,.quote-row{grid-template-columns:1fr;}
  .login-panel{padding:24px;border-radius:var(--r-card);}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-light{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px;}
  .faq-q{font-size:16px;gap:12px;padding:20px 0;}
  .faq-a{padding-left:0;padding-bottom:22px;}
  .btn-main,.btn-light,.btn-ghost{width:100%;}
}

/* roulang page: article */
:root{
  --brand:#12B886;
  --brand-dark:#0E9C74;
  --brand-light:#2FE0AC;
  --accent:#FF7A2F;
  --accent-dark:#E4621A;
  --gold:#FFD75E;
  --ink:#101A1C;
  --ink-2:#16242A;
  --bg:#F6F7F4;
  --surface:#FFFFFF;
  --line:#E3E7E2;
  --text:#1E2A2C;
  --muted:#5C6B6C;
  --muted-inv:#A9BCBB;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(16,26,28,.06);
  --sh-2:0 8px 24px -12px rgba(16,26,28,.18);
  --sh-3:0 24px 48px -24px rgba(16,26,28,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--brand-dark);}
button,input{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--text);}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 公告条 ---------- */
.topbar{background:var(--ink);color:#DCE7E5;font-size:13px;letter-spacing:.02em;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px;}
.topbar b{color:var(--brand-light);font-weight:600;}
.topbar-close{background:none;border:0;color:#7E9493;cursor:pointer;font-size:15px;line-height:1;padding:6px;}
.topbar-close:hover{color:var(--brand-light);}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:900;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1);}
.nav-grid{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:76px;gap:20px;}
.nav-side{display:flex;align-items:center;gap:26px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-item{position:relative;font-size:15px;font-weight:500;color:var(--text);padding:6px 0;white-space:nowrap;}
.nav-item::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-light));transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);}
.nav-item:hover{color:var(--brand-dark);}
.nav-item:hover::after,.nav-item.active::after{transform:scaleX(1);}
.nav-item.active{color:var(--brand-dark);font-weight:600;}
.brand{display:flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:7px;background:linear-gradient(135deg,var(--brand-light),var(--brand) 45%,var(--brand-dark));position:relative;box-shadow:0 6px 16px -8px rgba(18,184,134,.9);}
.brand-mark::before{content:"";position:absolute;inset:7px;border:2px solid rgba(255,255,255,.92);border-radius:3px;transform:rotate(45deg);}
.brand-mark::after{content:"";position:absolute;left:50%;top:50%;width:8px;height:2px;background:#fff;transform:translate(-50%,-50%) rotate(-45deg);border-radius:2px;}
.brand-text{display:flex;flex-direction:column;line-height:1.1;}
.brand-text b{font-size:17px;font-weight:800;letter-spacing:-.02em;color:var(--ink);}
.brand-text span{font-size:11px;color:var(--muted);letter-spacing:.22em;}
.btn-login{display:inline-flex;align-items:center;gap:6px;height:42px;padding:0 20px;border-radius:999px;background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;font-size:14px;font-weight:600;box-shadow:0 10px 22px -14px rgba(228,98,26,.95);transition:transform .18s var(--ease),filter .18s var(--ease);}
.btn-login:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);}
.btn-login:active{transform:translateY(0);}
.nav-burger,.btn-login-mobile,.mobile-panel{display:none;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--surface);border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);padding:16px 0;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand-dark);}
.crumb .sep{color:#C3CBC7;}
.crumb .current{color:#93A09E;}

/* ---------- 文章头部 ---------- */
.article-head{position:relative;background:var(--ink);overflow:hidden;}
.article-head::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.34;}
.article-head::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(16,26,28,.62) 0%,rgba(16,26,28,.94) 78%);}
.article-head .container{position:relative;z-index:2;padding-top:64px;padding-bottom:64px;}
.head-tag{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:rgba(47,224,172,.14);border:1px solid rgba(47,224,172,.36);color:var(--brand-light);font-size:12.5px;letter-spacing:.08em;}
.article-head h1{color:#fff;font-size:44px;line-height:1.28;font-weight:800;letter-spacing:-.015em;margin:20px 0 22px;max-width:920px;}
.head-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;color:var(--muted-inv);font-size:13.5px;letter-spacing:.02em;}
.head-meta .dot{width:4px;height:4px;border-radius:50%;background:#3D5553;}
.head-meta .badge-cat{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:6px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:#E7EFEE;font-size:12.5px;}
.num{font-variant-numeric:tabular-nums;font-family:Inter,"PingFang SC",sans-serif;}

/* ---------- 正文布局 ---------- */
.article-wrap{padding:72px 0 96px;}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start;}
.paper{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:48px 52px;}
.article-body{font-size:16.5px;line-height:1.9;color:var(--text);}
.article-body p{margin:0 0 22px;}
.article-body h2{font-size:27px;font-weight:700;margin:44px 0 18px;padding-left:16px;border-left:4px solid var(--brand);line-height:1.45;}
.article-body h3{font-size:20px;font-weight:600;margin:32px 0 12px;color:var(--ink);}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:4px;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--brand);}
.article-body ol{list-style:none;counter-reset:li;}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:10px;counter-increment:li;}
.article-body ol li::before{content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;color:var(--brand-dark);font-weight:700;font-size:14px;font-variant-numeric:tabular-nums;}
.article-body blockquote{margin:0 0 24px;padding:18px 24px;background:#F2F6F4;border-left:4px solid var(--brand);border-radius:0 var(--r-img) var(--r-img) 0;color:#2C3B3C;}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-img);margin:8px auto 8px;box-shadow:var(--sh-1);}
.article-body figure{margin:0 0 24px;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:8px 0 26px;font-size:15px;border-radius:var(--r-img);overflow:hidden;box-shadow:0 0 0 1px var(--line);}
.article-body th{background:#EDF3F1;color:var(--ink);font-weight:600;text-align:left;}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:#FAFBFA;}
.article-body tbody tr:last-child td{border-bottom:0;}
.article-body a{color:var(--brand-dark);border-bottom:1px solid rgba(14,156,116,.35);}
.article-body a:hover{color:var(--accent-dark);border-bottom-color:rgba(228,98,26,.5);}
.article-body code{background:#EEF3F1;border-radius:6px;padding:2px 6px;font-size:14px;}

/* 空态 */
.empty-state{text-align:center;padding:72px 24px;}
.empty-state i{font-size:40px;color:var(--brand);margin-bottom:18px;display:block;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:26px;}

/* ---------- 侧栏 ---------- */
.sidebar{display:flex;flex-direction:column;gap:22px;position:sticky;top:100px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);}
.side-title{display:flex;align-items:center;gap:9px;font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:16px;}
.side-title::before{content:"";width:4px;height:16px;border-radius:2px;background:linear-gradient(180deg,var(--brand-light),var(--brand-dark));}
.hot-list li+li{border-top:1px solid var(--line);}
.hot-list a{display:flex;gap:12px;align-items:flex-start;padding:13px 0;font-size:14.5px;color:#2A3839;}
.hot-list a:hover{color:var(--brand-dark);}
.hot-list .idx{flex:0 0 22px;height:22px;border-radius:6px;display:grid;place-items:center;font-size:12px;font-weight:700;background:#EDF3F1;color:var(--brand-dark);font-variant-numeric:tabular-nums;}
.hot-list a:nth-child(1) .idx,.hot-list li:first-child .idx{background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;}
.side-login{background:var(--ink);border:1px solid rgba(255,255,255,.08);color:#fff;}
.side-login .side-title{color:#fff;}
.side-login p{color:var(--muted-inv);font-size:13.5px;line-height:1.7;margin-bottom:16px;}
.side-input{width:100%;height:44px;border-radius:10px;border:1px solid var(--line);background:#fff;padding:0 14px;font-size:14px;margin-bottom:10px;color:var(--text);}
.side-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(18,184,134,.16);}
.side-input::placeholder{color:#9AA7A5;}
.btn-side{width:100%;height:44px;border-radius:10px;border:0;background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;font-weight:600;font-size:14.5px;cursor:pointer;transition:filter .18s var(--ease),transform .18s var(--ease);}
.btn-side:hover{filter:brightness(1.07);}
.btn-side:active{transform:translateY(1px);}
.side-note{font-size:12px;color:#7E9493;margin-top:12px;line-height:1.6;}
.side-cover{border-radius:var(--r-img);overflow:hidden;margin-bottom:14px;}
.side-cover img{width:100%;height:132px;object-fit:cover;}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 96px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.sec-head h2{font-size:28px;font-weight:700;}
.sec-head .sub{color:var(--muted);font-size:14px;margin-top:6px;}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--brand-dark);font-weight:600;font-size:14.5px;white-space:nowrap;}
.text-link i{transition:transform .18s var(--ease);}
.text-link:hover i{transform:translateX(3px);}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s var(--ease),box-shadow .18s var(--ease);display:block;}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);color:inherit;}
.rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-thumb .tag{position:absolute;left:12px;top:12px;height:26px;padding:0 10px;border-radius:6px;background:rgba(16,26,28,.72);color:#EAF3F1;font-size:12px;display:inline-flex;align-items:center;}
.rel-body{padding:20px 22px 24px;}
.rel-body h3{font-size:16.5px;font-weight:600;line-height:1.55;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:51px;}
.rel-body p{font-size:13.5px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;}
.rel-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:#93A09E;letter-spacing:.02em;}
.back-row{margin-top:34px;text-align:center;}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 24px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;color:var(--ink);font-size:15px;font-weight:600;transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);}

/* ---------- CTA ---------- */
.cta-strip{background:var(--ink);position:relative;overflow:hidden;}
.cta-strip::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.22;}
.cta-strip::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(16,26,28,.9),rgba(16,26,28,.66));}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:36px;padding:64px 0;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:30px;font-weight:800;letter-spacing:-.01em;margin-bottom:10px;}
.cta-inner p{color:var(--muted-inv);font-size:15px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn-primary{display:inline-flex;align-items:center;gap:9px;height:48px;padding:0 28px;border-radius:999px;background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;font-weight:600;font-size:15px;box-shadow:0 14px 28px -18px rgba(228,98,26,1);transition:filter .18s var(--ease),transform .18s var(--ease);}
.btn-primary:hover{color:#fff;filter:brightness(1.07);transform:translateY(-1px);}
.btn-outline-light2{display:inline-flex;align-items:center;gap:9px;height:48px;padding:0 26px;border-radius:999px;border:1px solid rgba(255,255,255,.32);color:#fff;font-weight:600;font-size:15px;transition:background .18s var(--ease),border-color .18s var(--ease);}
.btn-outline-light2:hover{color:#fff;background:rgba(255,255,255,.08);border-color:rgba(47,224,172,.7);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#C6D3D1;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text b{color:#fff;}
.footer-brand .brand-text span{color:#7E9493;}
.site-footer p{font-size:14px;color:#98ABA9;line-height:1.8;max-width:330px;}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;letter-spacing:.02em;}
.site-footer ul li{margin-bottom:11px;}
.site-footer ul a{font-size:14px;color:#A9BCBB;}
.site-footer ul a:hover{color:var(--brand-light);}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.09);color:#C6D3D1;font-size:15px;}
.footer-social a:hover{background:rgba(47,224,172,.16);border-color:rgba(47,224,172,.4);color:var(--brand-light);}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px;color:#7E9493;letter-spacing:.02em;}
.footer-links{display:flex;gap:22px;}
.footer-links a{color:#7E9493;}
.footer-links a:hover{color:var(--brand-light);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px;}
  .paper{padding:40px 38px;}
  .article-head h1{font-size:38px;}
}
@media (max-width:991px){
  .container{padding:0 24px;}
  .nav-side{display:none;}
  .nav-grid{grid-template-columns:44px 1fr 44px;min-height:66px;}
  .brand{justify-self:center;}
  .nav-burger{display:flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;background:none;border:0;cursor:pointer;padding:0 10px;}
  .nav-burger span{display:block;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s var(--ease),opacity .2s var(--ease);}
  .nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-burger.open span:nth-child(2){opacity:0;}
  .nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
  .btn-login-mobile{display:inline-flex;height:38px;padding:0 14px;font-size:13px;justify-self:end;}
  .mobile-panel{display:none;background:var(--ink);padding:10px 24px 26px;border-top:1px solid rgba(255,255,255,.08);}
  .mobile-panel.open{display:block;}
  .mobile-panel .m-item{display:block;padding:15px 0;color:#D6E2E0;font-size:15.5px;border-bottom:1px solid rgba(255,255,255,.08);}
  .mobile-panel .m-item.active{color:var(--brand-light);font-weight:600;}
  .mobile-panel .m-cta{display:block;text-align:center;margin-top:20px;height:48px;line-height:48px;border-radius:var(--r-btn);background:linear-gradient(135deg,var(--accent),var(--accent-dark));color:#fff;font-weight:600;}
  .layout{grid-template-columns:1fr;gap:34px;}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap;}
  .side-card{flex:1 1 300px;}
  .article-head .container{padding-top:46px;padding-bottom:46px;}
  .article-head h1{font-size:32px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-inner{padding:52px 0;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  body{font-size:15px;}
  .article-wrap{padding:44px 0 64px;}
  .paper{padding:26px 20px;border-radius:12px;}
  .article-body{font-size:15.5px;line-height:1.85;}
  .article-body h2{font-size:22px;margin-top:34px;}
  .article-body h3{font-size:18px;}
  .article-head h1{font-size:26px;}
  .article-head .container{padding-top:36px;padding-bottom:36px;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .sec-head h2{font-size:23px;}
  .rel-grid{grid-template-columns:1fr;gap:18px;}
  .sidebar{flex-direction:column;}
  .cta-inner{padding:44px 0;flex-direction:column;align-items:flex-start;}
  .cta-inner h2{font-size:23px;}
  .btn-primary,.btn-outline-light2{width:100%;justify-content:center;}
  .cta-actions{width:100%;flex-direction:column;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding-top:52px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .footer-links{flex-wrap:wrap;gap:14px;}
}

/* roulang page: category1 */
:root{
  --c-primary:#12B886;
  --c-primary-dark:#0E9C74;
  --c-primary-light:#2FE0AC;
  --c-accent:#FF7A2F;
  --c-accent-dark:#E4621A;
  --c-gold:#FFD75E;
  --c-ink:#101A1C;
  --c-ink-2:#16242A;
  --c-bg:#F6F7F4;
  --c-surface:#FFFFFF;
  --c-line:#E3E7E2;
  --c-text:#1E2A2C;
  --c-text-2:#5C6B6C;
  --c-text-inverse-2:#A9BCBB;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-badge:6px;
  --sh-1:0 1px 2px rgba(16,26,28,.06);
  --sh-2:0 8px 24px -12px rgba(16,26,28,.18);
  --sh-3:0 24px 48px -24px rgba(16,26,28,.28);
  --sp-section:104px;
  --sp-section-m:60px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease-out, border-color .18s ease-out;}
a:hover{color:var(--c-primary-dark);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:-0.01em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sp-section) 0;}
.section-tight{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;font-weight:600;
  color:var(--c-primary-dark);
  text-transform:none;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-primary);display:inline-block;}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{font-size:36px;font-weight:700;line-height:1.3;margin:14px 0 14px;}
.sec-head p{color:var(--c-text-2);font-size:16px;margin:0;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 公告条 ---------- */
.topbar{background:var(--c-ink);color:#DDE7E5;font-size:13px;}
.topbar .container{display:flex;align-items:center;gap:14px;min-height:42px;}
.topbar .dot{width:7px;height:7px;border-radius:50%;background:var(--c-primary-light);flex:0 0 auto;box-shadow:0 0 0 4px rgba(47,224,172,.16);}
.topbar span.msg{flex:1;line-height:1.5;padding:8px 0;}
.topbar a{color:var(--c-primary-light);font-weight:600;}
.topbar .close-btn{
  background:transparent;border:0;color:#8FA5A3;cursor:pointer;
  width:30px;height:30px;border-radius:8px;line-height:1;flex:0 0 auto;
}
.topbar .close-btn:hover{color:#fff;background:rgba(255,255,255,.08);}
.topbar.hide{display:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease-out,height .2s ease-out;
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav-grid{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:20px;height:76px;transition:height .2s ease-out;
}
.site-header.scrolled .nav-grid{height:64px;}
.nav-side{display:flex;align-items:center;gap:6px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-item{
  position:relative;
  padding:9px 12px;border-radius:9px;
  font-size:15px;font-weight:600;color:var(--c-text-2);
  white-space:nowrap;
}
.nav-item:hover{color:var(--c-primary-dark);background:rgba(18,184,134,.08);}
.nav-item.active{color:var(--c-primary-dark);}
.nav-item.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-light));
  border-radius:2px;
}
.brand{
  display:flex;align-items:center;gap:11px;justify-self:center;
}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:
    linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-dark) 55%,#0A7A5B 100%);
  position:relative;overflow:hidden;
  box-shadow:0 6px 16px -8px rgba(14,156,116,.7);
}
.brand-mark::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(115deg,rgba(255,255,255,.42) 0 18%,transparent 18% 100%),
    radial-gradient(circle at 72% 26%,rgba(255,215,94,.85) 0 3px,transparent 3px);
}
.brand-mark::after{
  content:"";position:absolute;left:9px;right:9px;top:18px;height:2px;background:rgba(255,255,255,.75);
  box-shadow:0 -8px 0 rgba(255,255,255,.35),0 8px 0 rgba(255,255,255,.35);
}
.brand-text{display:flex;align-items:baseline;gap:7px;line-height:1.1;}
.brand-text b{font-size:20px;font-weight:800;letter-spacing:-0.01em;color:var(--c-ink);}
.brand-text span{
  font-size:11px;font-weight:700;letter-spacing:.14em;
  color:#fff;background:var(--c-accent);padding:3px 7px;border-radius:var(--r-badge);
}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border:0;border-radius:var(--r-btn);
  background:linear-gradient(135deg,var(--c-accent),var(--c-accent-dark));
  color:#fff;font-weight:700;font-size:15px;cursor:pointer;
  box-shadow:0 8px 20px -12px rgba(228,98,26,.85);
  transition:transform .18s ease-out,box-shadow .18s ease-out,filter .18s ease-out;
}
.btn-main:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(228,98,26,.9);}
.btn-main:active{transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  background:#fff;border:1px solid var(--c-line);
  color:var(--c-text);font-weight:600;font-size:15px;cursor:pointer;
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary-dark);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-ghost-inverse{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  background:transparent;border:1px solid rgba(255,255,255,.45);
  color:#fff;font-weight:600;font-size:15px;cursor:pointer;
  transition:background .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.btn-ghost-inverse:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff;transform:translateY(-1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:7px;
  color:var(--c-primary-dark);font-weight:700;font-size:15px;
}
.btn-text i{transition:transform .18s ease-out;}
.btn-text:hover i{transform:translateX(3px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink);
  align-items:center;justify-content:center;cursor:pointer;
}
.mobile-only{display:none;}
.mobile-panel{
  display:none;background:var(--c-ink);border-top:1px solid rgba(255,255,255,.08);
  padding:16px 0 22px;
}
.mobile-panel.open{display:block;}
.mobile-panel a{
  display:block;color:#E6EFED;font-weight:600;font-size:15px;
  padding:13px 4px;border-bottom:1px solid rgba(255,255,255,.07);
}
.mobile-panel a:last-of-type{border-bottom:0;}
.mobile-panel a.active{color:var(--c-primary-light);}
.mobile-panel .btn-main,.mobile-panel .btn-ghost-inverse{width:100%;margin-top:14px;}

/* ---------- 页面首屏 ---------- */
.cat-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(16,26,28,.72) 0%,rgba(16,26,28,.9) 100%),
                   url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 80px);
  pointer-events:none;
}
.cat-hero-inner{position:relative;padding:78px 0 84px;}
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--c-text-inverse-2);margin-bottom:26px;flex-wrap:wrap;}
.crumb a{color:var(--c-text-inverse-2);}
.crumb a:hover{color:var(--c-primary-light);}
.crumb .sep{opacity:.5;}
.crumb .cur{color:#fff;font-weight:600;}
.cat-hero h1{
  color:#fff;font-size:52px;font-weight:800;line-height:1.16;
  letter-spacing:-0.01em;max-width:840px;
}
.cat-hero h1 em{font-style:normal;color:var(--c-primary-light);}
.cat-hero .lead{
  max-width:760px;margin-top:20px;color:#D7E3E1;font-size:16.5px;line-height:1.85;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;}
.hero-stats{
  display:flex;gap:0;margin-top:46px;border-top:1px solid rgba(255,255,255,.14);
  padding-top:26px;max-width:820px;flex-wrap:wrap;
}
.hero-stat{flex:1 1 0;min-width:150px;padding-right:26px;position:relative;}
.hero-stat + .hero-stat{padding-left:26px;}
.hero-stat + .hero-stat::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:rgba(255,255,255,.14);
}
.hero-stat b{display:block;font-size:30px;font-weight:800;color:#fff;line-height:1.1;}
.hero-stat b small{font-size:13px;font-weight:600;color:var(--c-primary-light);margin-left:4px;}
.hero-stat span{display:block;font-size:13.5px;color:var(--c-text-inverse-2);margin-top:6px;}

/* ---------- 概览区 ---------- */
.overview{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.overview-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.overview h2{font-size:32px;font-weight:700;line-height:1.35;margin-bottom:18px;}
.overview p{color:var(--c-text-2);}
.overview-figure{position:relative;}
.overview-figure img{border-radius:var(--r-img);width:100%;box-shadow:var(--sh-2);}
.overview-figure .tag-float{
  position:absolute;left:-14px;bottom:22px;
  background:var(--c-ink);color:#fff;font-size:13px;font-weight:600;
  padding:9px 15px;border-radius:var(--r-badge);
  border:1px solid rgba(255,255,255,.1);
}
.overview-figure .tag-float i{color:var(--c-primary-light);margin-right:6px;}

/* ---------- 卡片网格 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.card-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.card-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#CFE9DF;}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E9EDE9;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.card-item:hover .card-media img{transform:scale(1.04);}
.card-badge{
  position:absolute;left:12px;top:12px;z-index:2;
  background:rgba(16,26,28,.82);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.02em;
  padding:5px 10px;border-radius:var(--r-badge);
  backdrop-filter:blur(2px);
}
.card-badge.green{background:rgba(14,156,116,.92);}
.card-body{padding:24px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:10px;}
.card-body p{color:var(--c-text-2);font-size:15px;line-height:1.7;margin-bottom:18px;flex:1;}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-2);
}
.card-meta .step-no{font-weight:800;color:var(--c-primary);letter-spacing:.06em;}

/* ---------- 要点列表 ---------- */
.keypoints{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.kp-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;}
.kp-grid h2{font-size:32px;font-weight:700;line-height:1.35;margin:14px 0 16px;}
.kp-grid .kp-side p{color:var(--c-text-2);}
.kp-list li{
  display:flex;gap:14px;padding:20px 0;border-bottom:1px solid var(--c-line);
}
.kp-list li:first-child{padding-top:6px;}
.kp-list li:last-child{border-bottom:0;}
.kp-list .dot{
  width:9px;height:9px;border-radius:3px;background:var(--c-primary);
  margin-top:10px;flex:0 0 auto;
}
.kp-list b{display:block;font-size:16.5px;font-weight:700;margin-bottom:6px;}
.kp-list span{color:var(--c-text-2);font-size:15px;line-height:1.72;}

/* ---------- 深色流程区 ---------- */
.flow{background:var(--c-ink);color:#fff;}
.flow .sec-head h2{color:#fff;}
.flow .sec-head p{color:var(--c-text-inverse-2);}
.flow .eyebrow{color:var(--c-primary-light);}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;position:relative;}
.step{padding:0 30px 0 0;position:relative;}
.step + .step{padding-left:34px;}
.step + .step::before{
  content:"";position:absolute;left:0;top:14px;bottom:8px;width:1px;
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.22) 0 6px,transparent 6px 12px);
}
.step .no{
  font-size:34px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.4px var(--c-primary-light);
  margin-bottom:16px;letter-spacing:.02em;
}
.step h3{color:#fff;font-size:20px;font-weight:600;margin-bottom:10px;}
.step p{color:var(--c-text-inverse-2);font-size:15px;line-height:1.75;margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.faq-wrap h2{font-size:34px;font-weight:700;line-height:1.35;margin:14px 0 16px;}
.faq-wrap .faq-intro{color:var(--c-text-2);margin-bottom:22px;}
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:flex-start;gap:14px;padding:22px 0;
  font-size:17px;font-weight:600;color:var(--c-text);line-height:1.6;
}
.faq-q .idx{font-size:13px;font-weight:800;color:var(--c-primary);letter-spacing:.04em;padding-top:4px;flex:0 0 auto;}
.faq-q .txt{flex:1;}
.faq-q .icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;margin-top:2px;
  transition:transform .22s ease-out;
}
.faq-q .icon::before,.faq-q .icon::after{
  content:"";position:absolute;background:var(--c-text-2);border-radius:2px;
}
.faq-q .icon::before{left:0;right:0;top:10px;height:2px;}
.faq-q .icon::after{top:0;bottom:0;left:10px;width:2px;transition:opacity .22s ease-out;}
.faq-item.open .faq-q{color:var(--c-primary-dark);}
.faq-item.open .faq-q .icon{transform:rotate(45deg);}
.faq-item.open .faq-q .icon::before{background:var(--c-primary-dark);}
.faq-item.open .faq-q .icon::after{background:var(--c-primary-dark);}
.faq-a{display:none;padding:0 0 22px 34px;color:var(--c-text-2);font-size:15.5px;line-height:1.8;}
.faq-item.open .faq-a{display:block;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--c-ink-2) 0%,var(--c-ink) 60%,#0B1517 100%);
  color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-100px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,184,134,.28),transparent 62%);
}
.cta-inner{
  position:relative;display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;
  padding:64px 0;
}
.cta-inner h2{color:#fff;font-size:34px;font-weight:700;line-height:1.32;margin-bottom:14px;}
.cta-inner p{color:var(--c-text-inverse-2);margin:0;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:var(--c-text-inverse-2);padding:72px 0 0;font-size:15px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;}
.footer-brand .brand-text b{color:#fff;}
.footer-brand .brand-text span{background:var(--c-accent);}
.site-footer h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;}
.site-footer p{line-height:1.8;margin:0 0 18px;max-width:340px;}
.site-footer ul li{margin-bottom:11px;}
.site-footer a{color:var(--c-text-inverse-2);}
.site-footer a:hover{color:var(--c-primary-light);}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);color:#D8E4E2;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.footer-social a:hover{background:rgba(18,184,134,.2);color:var(--c-primary-light);transform:translateY(-2px);}
.footer-bottom{
  margin-top:52px;border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13.5px;
}
.footer-links{display:flex;gap:20px;flex-wrap:wrap;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .cat-hero h1{font-size:44px;}
  .container{padding:0 24px;}
  .grid-cards{gap:22px;}
}
@media (max-width:991px){
  :root{--sp-section:72px;}
  .nav-side,.nav-grid .nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-grid{grid-template-columns:auto 1fr auto;height:68px;gap:12px;}
  .brand{justify-self:center;}
  .brand-text b{font-size:18px;}
  .mobile-only{display:inline-flex;}
  .overview-grid,.kp-grid,.faq-wrap,.cta-inner{grid-template-columns:1fr;gap:34px;}
  .grid-cards{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:1fr;gap:26px;}
  .step{padding:0 0 0 0;}
  .step + .step{padding-left:0;}
  .step + .step::before{display:none;}
  .step{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:var(--r-card);padding:22px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cat-hero-inner{padding:56px 0 62px;}
  .cat-hero h1{font-size:36px;}
  .sec-head h2,.overview h2,.kp-grid h2{font-size:28px;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  body{font-size:15px;}
  .container{padding:0 16px;}
  .grid-cards{grid-template-columns:1fr;}
  .cat-hero h1{font-size:30px;}
  .cat-hero .lead{font-size:15px;}
  .hero-stats{flex-direction:column;gap:18px;padding-top:20px;}
  .hero-stat{padding:0 !important;}
  .hero-stat + .hero-stat::before{display:none;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .card-body{padding:18px;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-a{padding-left:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-inner h2{font-size:26px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#12B886;
  --c-primary-dark:#0E9C74;
  --c-primary-light:#2FE0AC;
  --c-accent:#FF7A2F;
  --c-accent-dark:#E4621A;
  --c-gold:#FFD75E;
  --c-ink:#101A1C;
  --c-ink-2:#16242A;
  --c-bg:#F6F7F4;
  --c-card:#FFFFFF;
  --c-line:#E3E7E2;
  --c-text:#1E2A2C;
  --c-muted:#5C6B6C;
  --c-muted-dark:#A9BCBB;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(16,26,28,.06);
  --sh-2:0 8px 24px -12px rgba(16,26,28,.18);
  --sh-3:0 24px 48px -24px rgba(16,26,28,.28);
  --sp-section:100px;
  --container:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-text);letter-spacing:-0.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* 公告条 */
.topbar{
  background:var(--c-ink);
  color:#E7F3F0;
  font-size:13px;
  letter-spacing:.02em;
}
.topbar-inner{
  display:flex;align-items:center;gap:12px;
  min-height:42px;
}
.topbar-inner i{color:var(--c-primary-light);}
.topbar-inner .grow{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.topbar-close{
  border:0;background:transparent;color:var(--c-muted-dark);
  width:26px;height:26px;border-radius:6px;cursor:pointer;line-height:1;
  transition:color .18s ease,background .18s ease;
}
.topbar-close:hover{color:#fff;background:rgba(255,255,255,.1);}
.topbar.is-hidden{display:none;}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.site-header.is-stuck{
  background:#fff;
  border-bottom-color:var(--c-line);
  box-shadow:0 6px 20px -18px rgba(16,26,28,.5);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:20px;
  min-height:76px;
  transition:min-height .2s ease;
}
.site-header.is-stuck .header-inner{min-height:64px;}
.nav-side{display:flex;align-items:center;gap:6px;}
.nav-left{justify-content:flex-start;}
.nav-right{justify-content:flex-end;}
.nav-item{
  position:relative;
  padding:9px 13px;
  border-radius:8px;
  font-size:15px;
  color:var(--c-muted);
  transition:color .18s ease,background .18s ease;
}
.nav-item::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-light));
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-item:hover{color:var(--c-primary-dark);background:rgba(18,184,134,.08);}
.nav-item:hover::after,.nav-item.active::after{transform:scaleX(1);}
.nav-item.active{color:var(--c-primary-dark);font-weight:600;}
.brand{display:flex;align-items:center;gap:10px;justify-self:center;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;position:relative;flex:0 0 auto;
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-dark) 55%,var(--c-ink) 100%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.25);
}
.brand-mark::before,.brand-mark::after{content:"";position:absolute;background:rgba(255,255,255,.85);}
.brand-mark::before{left:8px;right:8px;top:11px;height:2px;transform:rotate(-18deg);}
.brand-mark::after{left:8px;right:8px;top:20px;height:2px;transform:rotate(-18deg);opacity:.6;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--c-ink);}
.brand-text span{font-size:11px;letter-spacing:.18em;color:var(--c-muted);}
.btn-login{
  display:inline-flex;align-items:center;gap:6px;
  background:linear-gradient(135deg,var(--c-accent) 0%,var(--c-accent-dark) 100%);
  color:#fff;font-size:14px;font-weight:600;
  padding:10px 18px;border-radius:var(--r-pill);
  box-shadow:var(--sh-2);
  transition:filter .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-login:hover{filter:brightness(1.07);transform:translateY(-1px);color:#fff;}
.btn-login:active{transform:translateY(1px);}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:10px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-ink);
  cursor:pointer;
}
.mobile-panel{
  display:none;
  border-top:1px solid var(--c-line);
  background:var(--c-ink);
  padding:16px 0 22px;
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:block;color:#E7F3F0;font-size:15px;
  padding:12px 4px;border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-panel a.active{color:var(--c-primary-light);font-weight:600;}
.mobile-panel .m-login{
  margin-top:16px;text-align:center;background:var(--c-accent);
  border-radius:var(--r-btn);color:#fff;font-weight:600;border-bottom:0;
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn-primary{
  background:linear-gradient(135deg,var(--c-accent) 0%,var(--c-accent-dark) 100%);
  color:#fff;box-shadow:var(--sh-2);
}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-2px);box-shadow:var(--sh-3);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:#fff;color:var(--c-ink);border-color:var(--c-line);
}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary-dark);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-light{
  background:transparent;color:#fff;border-color:rgba(255,255,255,.35);
}
.btn-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--c-primary-dark);font-weight:600;font-size:15px;
  padding:6px 0;
}
.btn-text i{transition:transform .18s ease;}
.btn-text:hover i{transform:translateX(3px);}
.btn-block{width:100%;}

/* 徽章 / 标签 */
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(18,184,134,.12);color:var(--c-primary-dark);
}
.badge-tag.accent{background:rgba(255,122,47,.14);color:var(--c-accent-dark);}
.badge-tag.gold{background:rgba(255,215,94,.28);color:#8A6400;}
.badge-tag.dark{background:rgba(255,255,255,.1);color:#E7F3F0;}

/* 面包屑 */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--c-muted);letter-spacing:.02em;
}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary-dark);}
.crumb .sep{color:#B9C4C1;}
.crumb .current{color:#8B9997;}

/* Hero 横幅 */
.page-hero{
  position:relative;
  background-image:linear-gradient(180deg,rgba(16,26,28,.62) 0%,rgba(16,26,28,.88) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  color:#fff;
  padding:52px 0 68px;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(47,224,172,.16) 0%,transparent 42%),
                   repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 88px);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.page-hero .crumb{color:var(--c-muted-dark);margin-bottom:26px;}
.page-hero .crumb a{color:var(--c-muted-dark);}
.page-hero .crumb a:hover{color:var(--c-primary-light);}
.page-hero .crumb .current{color:rgba(255,255,255,.65);}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px;}
.page-hero h1{
  color:#fff;font-size:56px;font-weight:800;line-height:1.14;
  letter-spacing:-.01em;max-width:820px;
}
.page-hero h1 em{font-style:normal;color:var(--c-primary-light);}
.hero-sub{
  margin-top:20px;max-width:640px;
  color:rgba(233,244,242,.86);font-size:16.5px;line-height:1.8;
}
.hero-metrics{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;margin-top:40px;max-width:660px;
  border-top:1px solid rgba(255,255,255,.14);padding-top:24px;
}
.hero-metrics div{padding-right:24px;position:relative;}
.hero-metrics div + div{padding-left:26px;}
.hero-metrics div + div::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:rgba(255,255,255,.18);
}
.hero-metrics b{
  display:block;font-size:30px;font-weight:800;color:#fff;line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.hero-metrics span{font-size:13px;color:var(--c-muted-dark);letter-spacing:.02em;}

/* 板块通用 */
.section{padding:var(--sp-section) 0;}
.section-sm{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--c-primary-dark);text-transform:uppercase;margin-bottom:14px;
}
.section-head .kicker::before{
  content:"";width:22px;height:2px;background:var(--c-accent);
}
.section-head h2{font-size:36px;font-weight:700;line-height:1.28;}
.section-head p{margin-top:16px;color:var(--c-muted);font-size:16px;}
.on-dark{background:var(--c-ink);color:#EAF4F2;}
.on-dark h2,.on-dark h3{color:#fff;}
.on-dark p{color:var(--c-muted-dark);}

/* 锚点侧栏 + 图文交替列表 */
.wrap-aside{
  display:grid;grid-template-columns:minmax(0,1fr) 236px;gap:56px;align-items:start;
}
.aside-nav{
  position:sticky;top:104px;
  border-left:2px solid var(--c-line);
  padding-left:18px;
}
.aside-nav .aside-title{
  font-size:12px;letter-spacing:.16em;color:var(--c-muted);font-weight:700;margin-bottom:14px;
}
.aside-nav a{
  display:block;font-size:14.5px;color:var(--c-muted);
  padding:9px 0;position:relative;
  transition:color .18s ease,padding-left .18s ease;
}
.aside-nav a::before{
  content:"";position:absolute;left:-20px;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--c-accent);transition:height .2s ease;
}
.aside-nav a:hover{color:var(--c-primary-dark);padding-left:4px;}
.aside-nav a.is-current{color:var(--c-ink);font-weight:600;}
.aside-nav a.is-current::before{height:22px;}
.aside-note{
  margin-top:24px;padding:16px;border-radius:var(--r-card);
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--sh-1);
  font-size:13.5px;color:var(--c-muted);line-height:1.7;
}

.swap-list{border-top:1px solid var(--c-line);}
.swap-row{
  display:grid;grid-template-columns:minmax(0,460px) minmax(0,1fr);
  gap:48px;align-items:center;
  padding:46px 0;
  border-bottom:1px solid var(--c-line);
}
.swap-row.reverse{grid-template-columns:minmax(0,1fr) minmax(0,460px);}
.swap-row.reverse .swap-media{order:2;}
.swap-media{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  box-shadow:var(--sh-2);background:var(--c-ink);
}
.swap-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  transition:transform .5s ease;
}
.swap-row:hover .swap-media img{transform:scale(1.04);}
.swap-media .tag-float{
  position:absolute;left:14px;top:14px;
}
.swap-body h3{font-size:22px;font-weight:600;line-height:1.4;margin-bottom:12px;}
.swap-body p{color:var(--c-muted);font-size:15.5px;max-width:520px;}
.swap-facts{
  display:flex;gap:22px;flex-wrap:wrap;margin:18px 0 20px;
}
.swap-facts div{font-size:13.5px;color:var(--c-muted);}
.swap-facts b{
  display:block;font-size:20px;font-weight:800;color:var(--c-ink);
  font-variant-numeric:tabular-nums;line-height:1.3;
}

/* 奖励阶梯 */
.ladder{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.ladder-head,.ladder-row{
  display:grid;grid-template-columns:180px 160px 1fr 150px;
  gap:16px;align-items:center;
  padding:0 24px;
}
.ladder-head{
  min-height:54px;background:var(--c-ink);color:var(--c-muted-dark);
  font-size:13px;letter-spacing:.06em;
}
.ladder-row{min-height:64px;border-top:1px solid var(--c-line);}
.ladder-row:nth-child(odd){background:var(--c-bg);}
.ladder-row .lv{
  display:flex;align-items:center;gap:12px;font-weight:600;color:var(--c-ink);
}
.ladder-row .lv i{color:var(--c-primary);}
.ladder-row .val{font-variant-numeric:tabular-nums;color:var(--c-muted);}
.ladder-row .cond{font-size:14.5px;color:var(--c-muted);}
.ladder-row .tip{font-size:13px;color:var(--c-primary-dark);font-weight:600;}

/* 步骤 */
.steps{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  border-top:1px solid rgba(255,255,255,.14);
}
.step{
  padding:30px 26px 0;position:relative;
}
.step + .step::before{
  content:"";position:absolute;left:0;top:44px;bottom:12px;width:1px;
  background:rgba(255,255,255,.12);
}
.step .idx{
  font-size:34px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.4px var(--c-primary-light);
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;font-weight:600;margin:16px 0 10px;}
.step p{font-size:14.5px;color:var(--c-muted-dark);}

/* FAQ */
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;
  display:flex;align-items:flex-start;gap:16px;
  padding:24px 0;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--c-text);
  transition:color .18s ease;
}
.faq-q .fnum{
  font-size:14px;font-weight:700;color:var(--c-primary);
  font-variant-numeric:tabular-nums;padding-top:4px;flex:0 0 auto;
}
.faq-q .fq-text{flex:1 1 auto;}
.faq-q .fico{
  flex:0 0 auto;width:24px;height:24px;position:relative;margin-top:3px;
  transition:transform .25s ease;
}
.faq-q .fico::before,.faq-q .fico::after{
  content:"";position:absolute;background:var(--c-muted);border-radius:2px;
  transition:background .18s ease;
}
.faq-q .fico::before{left:4px;right:4px;top:11px;height:2px;}
.faq-q .fico::after{top:4px;bottom:4px;left:11px;width:2px;}
.faq-q[aria-expanded="true"]{color:var(--c-primary-dark);}
.faq-q[aria-expanded="true"] .fico{transform:rotate(45deg);}
.faq-q[aria-expanded="true"] .fico::before,
.faq-q[aria-expanded="true"] .fico::after{background:var(--c-primary-dark);}
.faq-q:hover{color:var(--c-primary-dark);}
.faq-a{
  padding:0 40px 26px 34px;
  color:var(--c-muted);font-size:15.5px;line-height:1.9;max-width:860px;
}

/* CTA 条 */
.cta-band{
  background:var(--c-ink);
  position:relative;overflow:hidden;
  padding:72px 0;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(18,184,134,.22) 0%,transparent 45%),
             repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 1px,transparent 1px 96px);
  pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-inner h2{color:#fff;font-size:32px;font-weight:700;line-height:1.3;}
.cta-inner p{color:var(--c-muted-dark);margin-top:12px;font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* 页脚 */
.site-footer{
  background:var(--c-ink);color:var(--c-muted-dark);
  padding:72px 0 0;font-size:14.5px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{width:30px;height:30px;border-radius:9px;}
.footer-brand .brand-text b{color:#fff;font-size:16px;}
.footer-brand .brand-text span{color:var(--c-muted-dark);}
.site-footer p{line-height:1.8;}
.site-footer h4{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;
}
.site-footer ul li{margin-bottom:11px;}
.site-footer ul li a:hover,.site-footer .footer-links a:hover{color:var(--c-primary-light);}
.footer-social{display:flex;gap:10px;margin-top:20px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.07);color:#DBE9E6;
  border:1px solid rgba(255,255,255,.08);
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.footer-social a:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;
}
.footer-links{display:flex;gap:20px;flex-wrap:wrap;}

/* 响应式 */
@media (max-width:1199.98px){
  :root{--sp-section:84px;}
  .page-hero h1{font-size:42px;}
  .wrap-aside{grid-template-columns:minmax(0,1fr) 210px;gap:36px;}
  .swap-row,.swap-row.reverse{grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:32px;}
  .swap-row.reverse{grid-template-columns:minmax(0,1fr) minmax(0,380px);}
  .step{padding:26px 18px 0;}
}
@media (max-width:991.98px){
  .container{padding:0 24px;}
  .header-inner{grid-template-columns:auto 1fr auto;min-height:66px;}
  .nav-side.nav-left,.nav-side.nav-right{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;order:1;}
  .brand{order:2;justify-self:center;}
  .header-login-m{order:3;display:inline-flex;}
  .section{padding:64px 0;}
  .section-sm{padding:52px 0;}
  .page-hero{padding:36px 0 52px;}
  .page-hero h1{font-size:38px;}
  .hero-metrics b{font-size:26px;}
  .section-head h2{font-size:28px;}
  .wrap-aside{grid-template-columns:minmax(0,1fr);gap:28px;}
  .aside-nav{
    position:static;border-left:0;padding-left:0;
    display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;
    border-bottom:1px solid var(--c-line);
  }
  .aside-nav .aside-title{display:none;}
  .aside-nav a{
    flex:0 0 auto;padding:8px 14px;border-radius:var(--r-pill);
    background:#fff;border:1px solid var(--c-line);color:var(--c-muted);
  }
  .aside-nav a::before{display:none;}
  .aside-nav a.is-current{background:rgba(18,184,134,.12);border-color:rgba(18,184,134,.4);color:var(--c-primary-dark);}
  .aside-note{display:none;}
  .swap-row,.swap-row.reverse{grid-template-columns:minmax(0,1fr);gap:22px;padding:34px 0;}
  .swap-row.reverse .swap-media{order:0;}
  .swap-media img{aspect-ratio:16/9;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step{padding:24px 20px 0;}
  .step:nth-child(3)::before{display:none;}
  .step:nth-child(3),.step:nth-child(4){border-top:1px solid rgba(255,255,255,.12);margin-top:8px;padding-top:26px;}
  .ladder-head{display:none;}
  .ladder-row{
    grid-template-columns:1fr 1fr;gap:8px 16px;padding:16px 20px;min-height:0;
  }
  .ladder-row .cond{grid-column:1 / -1;}
  .ladder-row .tip{grid-column:1 / -1;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767.98px){
  .page-hero h1{font-size:32px;}
  .hero-sub{font-size:15px;}
  .hero-metrics{grid-template-columns:1fr;gap:16px;border-top:1px solid rgba(255,255,255,.14);}
  .hero-metrics div{padding:0;}
  .hero-metrics div + div{padding-left:0;}
  .hero-metrics div + div::before{display:none;}
  .hero-metrics b{font-size:24px;display:inline;margin-right:8px;}
  .hero-metrics span{display:inline;}
  .section-head h2{font-size:24px;}
  .swap-body h3{font-size:19px;}
  .steps{grid-template-columns:minmax(0,1fr);}
  .step + .step::before{display:none;}
  .step:nth-child(3),.step:nth-child(4){border-top:0;margin-top:0;padding-top:24px;}
  .step + .step{border-top:1px solid rgba(255,255,255,.12);}
  .faq-q{font-size:16px;padding:20px 0;}
  .faq-a{padding:0 0 22px 30px;}
  .cta-inner h2{font-size:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand-text b{font-size:16px;}
  .brand-text span{letter-spacing:.12em;}
  .page-hero h1{font-size:28px;}
  .ladder-row{grid-template-columns:1fr;}
  .swap-facts{gap:16px;}
}