/* roulang page: index */
:root{
  --c-primary:#7A4DFF;
  --c-primary-deep:#5A31D6;
  --c-secondary:#17C8A6;
  --c-warm-1:#FF6A3D;
  --c-warm-2:#FFB020;
  --c-bg:#FBF8F4;
  --c-surface:#FFFFFF;
  --c-deep:#171326;
  --c-text:#1B1830;
  --c-text-2:#5C5872;
  --c-text-3:#8B87A0;
  --c-line:#ECE7F2;
  --c-line-strong:#DDD5EA;
  --grad-brand:linear-gradient(120deg,#7A4DFF 0%,#17C8A6 100%);
  --grad-warm:linear-gradient(120deg,#FF6A3D 0%,#FFB020 100%);
  --grad-deep:linear-gradient(115deg,#5A31D6 0%,#3A2188 48%,#10705E 100%);
  --r-card:20px;
  --r-big:28px;
  --r-btn:999px;
  --r-input:14px;
  --sh-1:0 2px 8px rgba(27,24,48,.05);
  --sh-2:0 16px 40px rgba(27,24,48,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary-deep)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{border:0;background:none;cursor:pointer}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{margin-bottom:44px;max-width:760px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.35;letter-spacing:-.3px;position:relative;padding-left:18px}
.section-head h2::before{content:"";position:absolute;left:0;top:9px;width:6px;height:24px;border-radius:4px;background:var(--grad-brand)}
.section-head p{margin-top:12px;color:var(--c-text-2);font-size:15.5px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.6px;color:var(--c-primary);background:rgba(122,77,255,.09);border-radius:999px;padding:6px 14px;margin-bottom:16px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad-brand)}
.muted{color:var(--c-text-3);font-size:13.5px}

/* ---------- 顶部微条 ---------- */
.topbar{background:var(--c-deep);color:#E8E3F5;font-size:13.5px;position:relative;z-index:70}
.topbar .container{display:flex;align-items:center;justify-content:center;gap:10px;min-height:36px;padding-right:52px}
.topbar b{color:#fff;font-weight:600}
.topbar .topbar-tag{background:var(--grad-warm);color:#fff;border-radius:999px;padding:1px 10px;font-size:12px;font-weight:700}
.topbar-close{position:absolute;right:18px;top:50%;transform:translateY(-50%);width:24px;height:24px;border-radius:8px;color:#C9C2E0;display:grid;place-items:center;font-size:16px;line-height:1}
.topbar-close:hover{background:rgba(255,255,255,.12);color:#fff}
.topbar.is-hidden{display:none}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(251,248,244,.94);border-bottom:1px solid transparent;transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease)}
.site-header.is-stuck{background:rgba(255,255,255,.94);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);box-shadow:0 2px 14px rgba(27,24,48,.07);border-bottom-color:var(--c-line)}
.nav-wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:76px}
.nav-group{display:flex;align-items:center;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--c-text);letter-spacing:-.4px;white-space:nowrap}
.brand:hover{color:var(--c-text)}
.brand-mark{width:36px;height:36px;border-radius:12px;background:var(--grad-brand);display:grid;place-items:center;box-shadow:0 6px 16px rgba(122,77,255,.28);flex:0 0 auto}
.brand-text{display:inline-block}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);padding:8px 2px;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;border-radius:2px;background:var(--grad-brand);transform:translateX(-50%);transition:width .22s var(--ease)}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{width:60%}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{width:60%}
.nav-toggle{display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--c-line-strong);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-panel{display:none;position:absolute;left:0;right:0;top:calc(100% + 10px);background:#fff;border:1px solid var(--c-line);border-radius:20px;box-shadow:var(--sh-2);padding:20px}
.mobile-panel.is-open{display:block}
.mobile-panel .mp-label{font-size:12.5px;font-weight:700;color:var(--c-text-3);letter-spacing:.5px;margin:4px 0 10px}
.mobile-panel a.mp-link{display:block;padding:12px 14px;border-radius:12px;color:var(--c-text);font-size:15px;font-weight:500}
.mobile-panel a.mp-link:hover,.mobile-panel a.mp-link.active{background:rgba(122,77,255,.08);color:var(--c-primary-deep)}
.mobile-panel .btn{margin-top:14px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-btn);padding:14px 28px;font-size:15px;font-weight:600;line-height:1.2;border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);text-align:center}
.btn .arrow{transition:transform .2s var(--ease);font-size:14px}
.btn:hover .arrow{transform:translateX(2px)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(122,77,255,.26)}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:scale(.98)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-line-strong)}
.btn-outline:hover{color:var(--c-primary-deep);border-color:var(--c-primary);transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-outline:active{transform:scale(.98)}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-1px)}
.btn-soft{background:rgba(122,77,255,.08);color:var(--c-primary-deep);border-color:transparent}
.btn-soft:hover{background:rgba(122,77,255,.15);color:var(--c-primary-deep)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 84px}
.hero::before{content:"";position:absolute;top:-180px;right:-140px;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle at 50% 50%,rgba(122,77,255,.20),rgba(122,77,255,0) 68%);pointer-events:none}
.hero::after{content:"";position:absolute;bottom:-220px;left:-160px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle at 50% 50%,rgba(23,200,166,.16),rgba(23,200,166,0) 70%);pointer-events:none}
.hero .container{position:relative;z-index:2}
.hero-grid{display:flex;flex-wrap:wrap;align-items:center;gap:48px}
.hero-copy{flex:1 1 520px;min-width:0}
.hero-visual{flex:1 1 380px;min-width:0}
.hero h1{font-size:clamp(28px,4.2vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.5px;margin-bottom:18px}
.hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17px;color:var(--c-text-2);max-width:560px;margin-bottom:28px}
.hero-visual-card{position:relative;border-radius:var(--r-big);overflow:hidden;box-shadow:var(--sh-2);background:var(--c-surface)}
.hero-visual-card img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hero-visual-card .hero-mask{position:absolute;inset:0;background:linear-gradient(150deg,rgba(122,77,255,.62) 0%,rgba(23,200,166,.30) 55%,rgba(23,19,38,.35) 100%);mix-blend-mode:multiply}
.hero-visual-badge{position:absolute;left:20px;bottom:20px;right:20px;display:flex;align-items:center;justify-content:space-between;gap:12px;background:rgba(255,255,255,.92);border-radius:16px;padding:12px 16px;box-shadow:var(--sh-1)}
.hero-visual-badge strong{font-size:14.5px;color:var(--c-text)}
.hero-visual-badge span{font-size:12.5px;color:var(--c-text-3)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:36px}
.stat{position:relative;background:#fff;border-radius:16px;padding:16px 14px;box-shadow:var(--sh-1);overflow:hidden}
.stat::before{content:"";position:absolute;inset:0;border-radius:16px;padding:1px;background:var(--grad-brand);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:.55;pointer-events:none}
.stat-num{font-family:"DIN Alternate","Barlow","HarmonyOS Sans SC",system-ui,sans-serif;font-size:30px;font-weight:800;line-height:1.1;letter-spacing:-.5px;font-variant-numeric:tabular-nums;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-num small{font-size:14px;font-weight:700;margin-left:2px;color:var(--c-text-2);-webkit-text-fill-color:var(--c-text-2)}
.stat-label{margin-top:6px;font-size:13px;color:var(--c-text-3)}

/* ---------- 阶梯 ---------- */
.steps-band{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.ladder{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;align-items:end}
.ladder-item{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.ladder-item:nth-child(1){min-height:290px;background:#FCFAFF}
.ladder-item:nth-child(2){min-height:318px;background:#F8F5FF}
.ladder-item:nth-child(3){min-height:346px;background:#F3EEFF}
.ladder-item:nth-child(4){min-height:374px;background:#EDE6FF;border-color:var(--c-line-strong)}
.ladder-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.ladder-idx{width:34px;height:34px;border-radius:11px;background:var(--grad-brand);color:#fff;font-weight:800;display:grid;place-items:center;font-size:15px;margin-bottom:16px}
.ladder-item h3{font-size:19px;font-weight:700;line-height:1.45}
.ladder-item .gate{font-size:13.5px;color:var(--c-text-3);margin-top:6px;margin-bottom:16px}
.ladder-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--c-text-2);margin-bottom:10px}
.ladder-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:3px;background:var(--grad-brand);opacity:.85}
.ladder-item .btn{margin-top:10px}

/* ---------- 对比 ---------- */
.compare-scroll{overflow-x:auto;padding-bottom:8px;-webkit-overflow-scrolling:touch}
.compare-table{min-width:820px;border:1px solid var(--c-line);border-radius:var(--r-big);background:#fff;overflow:hidden;box-shadow:var(--sh-1)}
.compare-head{display:grid;grid-template-columns:170px repeat(3,1fr);background:#FAF7FF;border-bottom:1px solid var(--c-line)}
.compare-row{display:grid;grid-template-columns:170px repeat(3,1fr);border-bottom:1px solid var(--c-line)}
.compare-row:last-child{border-bottom:0}
.compare-row:nth-child(odd of .compare-row){background:#fff}
.compare-row.alt{background:#FCFBFE}
.compare-cell{padding:16px 18px;font-size:14.5px;color:var(--c-text-2);border-right:1px solid var(--c-line);display:flex;align-items:center}
.compare-cell:last-child{border-right:0}
.compare-label{font-weight:600;color:var(--c-text);background:#FBF9FE}
.col-featured{background:rgba(122,77,255,.06)}
.compare-head .compare-cell{flex-direction:column;align-items:flex-start;gap:2px;padding-top:24px;padding-bottom:22px}
.plan-name{font-size:16px;font-weight:700;color:var(--c-text);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.plan-price{font-family:"DIN Alternate","Barlow","HarmonyOS Sans SC",system-ui,sans-serif;font-size:32px;font-weight:800;line-height:1.1;letter-spacing:-.5px;color:var(--c-primary-deep);font-variant-numeric:tabular-nums}
.plan-price small{font-size:13px;font-weight:600;color:var(--c-text-3);margin-left:4px;letter-spacing:0}
.plan-note{font-size:12.5px;color:var(--c-text-3)}
.pill{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 12px;font-size:12px;font-weight:700;background:rgba(23,200,166,.12);color:#0E8B73}
.pill-warm{background:var(--grad-warm);color:#fff}
.pill-purple{background:rgba(122,77,255,.12);color:var(--c-primary-deep)}
.swipe-tip{display:none;margin-top:10px;font-size:12.5px;color:var(--c-text-3)}

/* ---------- 限时横幅 ---------- */
.flash{margin:0 auto;border-radius:var(--r-big);background:var(--grad-deep);color:#fff;padding:34px 36px;display:grid;grid-template-columns:1fr auto auto;gap:28px;align-items:center;box-shadow:0 20px 46px rgba(58,33,136,.28);position:relative;overflow:hidden}
.flash::after{content:"";position:absolute;right:-80px;top:-90px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(255,176,32,.30),rgba(255,176,32,0) 68%);pointer-events:none}
.flash h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.4;letter-spacing:-.2px}
.flash p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.78);max-width:520px}
.countdown{display:flex;gap:12px;position:relative;z-index:2}
.cd-block{width:76px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);border-radius:16px;padding:12px 8px;text-align:center}
.cd-num{font-family:"DIN Alternate","Barlow","HarmonyOS Sans SC",system-ui,sans-serif;font-size:28px;font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums;color:#fff}
.cd-label{font-size:12px;color:rgba(255,255,255,.7);margin-top:4px}
.flash .btn{position:relative;z-index:2;white-space:nowrap}

/* ---------- 指标 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.metric-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1)}
.metric-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:12px}
.metric-top h3{font-size:16px;font-weight:700;color:var(--c-text)}
.metric-top strong{font-family:"DIN Alternate","Barlow","HarmonyOS Sans SC",system-ui,sans-serif;font-size:22px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums}
.bar{height:8px;border-radius:999px;background:var(--c-line);overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:var(--grad-brand)}
.metric-card p{margin-top:12px;font-size:14px;color:var(--c-text-2)}
.assure{display:flex;flex-wrap:wrap;gap:28px;align-items:center;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-big);padding:26px;box-shadow:var(--sh-1)}
.assure-img{flex:0 0 240px;border-radius:var(--r-card);overflow:hidden}
.assure-img img{width:100%;aspect-ratio:16/10;object-fit:cover}
.assure-copy{flex:1 1 380px;min-width:0}
.assure-copy h3{font-size:20px;font-weight:700;margin-bottom:10px}
.assure-copy p{font-size:14.8px;color:var(--c-text-2);margin-bottom:14px}
.assure-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 18px}
.assure-list li{position:relative;padding-left:20px;font-size:14.2px;color:var(--c-text-2)}
.assure-list li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;background:var(--c-secondary)}

/* ---------- 资讯卡片 ---------- */
.news-grid{margin-top:0}
.news-card{display:flex;flex-direction:column;height:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);color:inherit}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-line-strong);color:inherit}
.news-cover{position:relative;overflow:hidden}
.news-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-cat{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);color:var(--c-primary-deep);border-radius:999px;padding:4px 12px;font-size:12px;font-weight:700}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.news-body h3{font-size:17px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s var(--ease)}
.news-card:hover .news-body h3{color:var(--c-primary)}
.news-body p{margin-top:10px;font-size:14px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1 1 auto}
.news-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:14px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-text-3)}
.news-foot .go{color:var(--c-primary);font-weight:700;transition:transform .2s var(--ease)}
.news-card:hover .news-foot .go{transform:translateX(3px)}
.empty-state{background:#fff;border:1px dashed var(--c-line-strong);border-radius:var(--r-card);padding:48px 24px;text-align:center}
.empty-state svg{margin:0 auto 14px}
.empty-state p{font-size:15px;color:var(--c-text-2)}
.empty-state span{display:block;margin-top:6px;font-size:13px;color:var(--c-text-3)}
.empty-state .btn{margin-top:18px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.accordion{border:1px solid var(--c-line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1);overflow:hidden}
.accordion .accordion-item{border:0;border-bottom:1px solid var(--c-line);background:transparent}
.accordion .accordion-item:last-child{border-bottom:0}
.accordion .accordion-title{position:relative;display:block;padding:20px 62px 20px 24px;font-size:16.5px;font-weight:600;color:var(--c-text);background:transparent;border:0;transition:color .2s var(--ease),background .2s var(--ease)}
.accordion .accordion-title:hover{color:var(--c-primary);background:#FCFAFE}
.accordion[data-accordion] .accordion-title::before{display:none}
.accordion .accordion-title::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);width:24px;height:24px;border-radius:8px;background:rgba(122,77,255,.10);color:var(--c-primary);font-size:16px;font-weight:700;line-height:24px;text-align:center}
.accordion .accordion-item.is-active .accordion-title{color:var(--c-primary-deep)}
.accordion .accordion-item.is-active .accordion-title::after{content:"−";background:var(--grad-brand);color:#fff}
.accordion .accordion-content{padding:0;border:0;background:#F7F4FB;color:var(--c-text-2);font-size:14.8px}
.accordion .accordion-content .inner{padding:18px 24px 22px}

/* ---------- 表单 ---------- */
.consult{display:flex;flex-wrap:wrap;gap:36px;align-items:flex-start}
.consult-copy{flex:1 1 340px;min-width:0}
.consult-copy h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;letter-spacing:-.3px}
.consult-copy > p{margin-top:14px;color:var(--c-text-2);font-size:15px}
.tips{margin-top:24px}
.tips li{position:relative;padding-left:26px;margin-bottom:14px;font-size:14.5px;color:var(--c-text-2)}
.tips li::before{content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:6px;background:var(--grad-brand);opacity:.9}
.form-card{flex:1 1 460px;min-width:0;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-big);padding:30px;box-shadow:var(--sh-1)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--c-text-2);margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;min-height:48px;padding:12px 14px;border:1px solid var(--c-line);border-radius:var(--r-input);background:#FDFCFF;color:var(--c-text);transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);appearance:none}
.field textarea{min-height:118px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 4px rgba(122,77,255,.12)}
.field select{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235C5872' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:40px}
.form-note{margin-top:14px;font-size:12.6px;color:var(--c-text-3);line-height:1.7}
.form-msg{margin-top:14px;font-size:14px;color:#0E8B73;display:none}
.form-msg.is-show{display:block}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--c-deep);color:#fff;border-radius:var(--r-big);padding:40px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(122,77,255,.55) 0%,rgba(23,200,166,.28) 100%);opacity:.7}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.4}
.cta-band p{margin-top:10px;font-size:14.6px;color:rgba(255,255,255,.78);max-width:560px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-deep);color:#B9B3CE;margin-top:96px;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand)}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding:64px 0 44px}
.footer-brand .brand{color:#fff;font-size:18px}
.footer-brand .brand:hover{color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:#9C96B5;max-width:330px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.3px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:#B9B3CE}
.footer-col a:hover{color:var(--c-secondary)}
.footer-col .plain{font-size:14px;color:#B9B3CE}
.footer-bottom{border-top:1px solid rgba(255,255,255,.10);padding:20px 0 26px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.6px;color:#8B87A0}
.footer-bottom a{color:#8B87A0}
.footer-bottom a:hover{color:var(--c-secondary)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .section{padding:84px 0}
  .compare-table{min-width:760px}
}
@media (max-width:1023px){
  .container{padding:0 20px}
  .nav-group{display:none}
  .nav-toggle{display:inline-flex}
  .nav-wrap{justify-content:space-between}
  .brand{position:absolute;left:50%;transform:translateX(-50%)}
  .hero{padding:44px 0 68px}
  .hero-grid{gap:32px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ladder{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch}
  .ladder-item{min-height:auto !important}
  .flash{grid-template-columns:1fr;gap:22px;padding:30px 26px}
  .flash .btn{width:100%}
  .countdown{justify-content:flex-start}
  .metric-grid{grid-template-columns:1fr}
  .footer-main{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  .site-footer{margin-top:72px}
}
@media (max-width:767px){
  .section{padding:60px 0}
  .section-tight{padding:52px 0}
  .section-head{margin-bottom:30px}
  .brand-text{font-size:16px}
  .hero h1{margin-bottom:14px}
  .hero-sub{font-size:15.5px}
  .btn{padding:13px 22px;min-height:44px}
  .btn-row{gap:10px}
  .btn-row .btn{flex:1 1 auto}
  .cd-block{width:64px;padding:10px 6px}
  .cd-num{font-size:22px}
  .assure{padding:20px}
  .assure-img{flex:1 1 100%}
  .assure-list{grid-template-columns:1fr}
  .compare-table{min-width:700px}
  .swipe-tip{display:block}
  .consult{gap:26px}
  .form-card{padding:22px}
  .cta-band{padding:28px 22px}
  .cta-band .btn{width:100%}
  .footer-main{grid-template-columns:1fr;padding:44px 0 30px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .topbar .container{font-size:12.6px;padding-right:46px;justify-content:flex-start}
  .topbar .topbar-tip{display:none}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .stat-num{font-size:24px}
  .ladder{grid-template-columns:1fr}
  .countdown{gap:8px}
  .cd-block{flex:1 1 0;width:auto}
  .compare-table{min-width:660px}
  .accordion .accordion-title{font-size:15.5px;padding:18px 56px 18px 18px}
}

/* roulang page: article */
:root{
  --c-primary:#7A4DFF;
  --c-primary-deep:#5A31D6;
  --c-secondary:#17C8A6;
  --c-accent-warm:#FF6A3D;
  --c-accent-gold:#FFB020;
  --c-bg:#FBF8F4;
  --c-surface:#FFFFFF;
  --c-deep:#171326;
  --c-text:#1B1830;
  --c-text-2:#5C5872;
  --c-text-3:#8B87A0;
  --c-line:#ECE7F2;
  --c-line-strong:#DDD5EA;
  --grad-brand:linear-gradient(120deg,#7A4DFF 0%,#17C8A6 100%);
  --grad-promo:linear-gradient(120deg,#FF6A3D 0%,#FFB020 100%);
  --r-card:20px;
  --r-card-lg:28px;
  --r-btn:999px;
  --r-input:14px;
  --sh-1:0 2px 8px rgba(27,24,48,.05);
  --sh-2:0 16px 40px rgba(27,24,48,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:78px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
input,select,textarea{border-radius:var(--r-input)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.grid-x{margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.4px;
  color:var(--c-primary-deep);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-brand)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 28px;border-radius:var(--r-btn);
  border:1px solid transparent;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn svg{transition:transform .2s var(--ease)}
.btn:hover svg{transform:translateX(2px)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(122,77,255,.24)}
.btn-primary:hover{box-shadow:0 14px 30px rgba(122,77,255,.32);transform:translateY(-1px);filter:brightness(1.04)}
.btn-secondary{background:#fff;color:var(--c-primary-deep);border-color:rgba(122,77,255,.35)}
.btn-secondary:hover{background:#F5F1FF;border-color:var(--c-primary)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn:active{transform:scale(.98)}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,248,244,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(236,231,242,.9);
  transition:box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(27,24,48,.08);background:rgba(255,255,255,.96)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:14px;min-height:var(--nav-h);
}
.header-left,.header-right{display:flex;align-items:center;gap:6px}
.header-left{justify-self:start}
.header-right{justify-self:end;gap:14px}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;background:var(--grad-brand);
  box-shadow:0 6px 16px rgba(122,77,255,.28);flex:0 0 auto;
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.3px;color:var(--c-text)}
.nav-group{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-block;
  padding:10px 14px;font-size:15px;font-weight:500;color:var(--c-text-2);
  border-radius:10px;transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;
  border-radius:2px;background:var(--grad-brand);
  transform:translateX(-50%);transition:width .2s var(--ease);
}
.nav-link:hover{color:var(--c-primary-deep);background:rgba(122,77,255,.06)}
.nav-link:hover::after{width:60%}
.nav-link.active{color:var(--c-primary-deep);font-weight:600}
.nav-link.active::after{width:60%}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-line-strong);background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-panel{
  max-height:0;overflow:hidden;
  transition:max-height .28s var(--ease);
}
.mobile-panel.is-open{max-height:560px}
.mobile-panel-inner{
  margin:0 24px 18px;padding:16px;
  background:#fff;border:1px solid var(--c-line);border-radius:20px;
  box-shadow:var(--sh-2);display:flex;flex-direction:column;gap:6px;
}
.m-link{
  display:block;padding:12px 14px;border-radius:12px;
  font-size:15px;font-weight:500;color:var(--c-text-2);
}
.m-link:hover,.m-link.active{background:#F5F1FF;color:var(--c-primary-deep)}
.mobile-panel .btn{margin-top:8px}

/* ---------- 面包屑 ---------- */
.breadcrumb-bar{padding:22px 0 0}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--c-text-3);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;max-width:100%}
.breadcrumb li+li::before{content:"›";color:var(--c-line-strong);font-size:15px}
.breadcrumb a{color:var(--c-text-2)}
.breadcrumb a:hover{color:var(--c-primary-deep)}
.breadcrumb li[aria-current]{color:var(--c-text-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:52vw}

/* ---------- 文章头 ---------- */
.article-hero{position:relative;padding:26px 0 0;overflow:hidden}
.article-hero::before{
  content:"";position:absolute;right:-140px;top:-180px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(122,77,255,.16),transparent 68%);pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;left:-120px;bottom:-200px;width:440px;height:440px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(23,200,166,.14),transparent 70%);pointer-events:none;
}
.article-hero-inner{position:relative;z-index:1;max-width:860px}
.cat-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--c-primary-deep);
  background:rgba(122,77,255,.10);border:1px solid rgba(122,77,255,.22);
}
.article-title{
  margin-top:18px;
  font-size:clamp(28px,4.2vw,44px);
  font-weight:800;line-height:1.25;letter-spacing:-.5px;color:var(--c-text);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;font-size:13.5px;color:var(--c-text-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line-strong)}
.article-meta .meta-num{
  font-style:normal;font-weight:700;color:var(--c-primary-deep);
  font-family:"DIN Alternate","Barlow","HarmonyOS Sans SC",sans-serif;
}
.hero-figure{
  position:relative;z-index:1;margin-top:28px;
  border-radius:var(--r-card-lg);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--sh-1);background:#fff;
}
.hero-figure img{width:100%;aspect-ratio:16/6;object-fit:cover}

/* ---------- 正文布局 ---------- */
.article-main{padding:44px 0 0}
.article-layout{align-items:flex-start}
.article-body{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card-lg);
  padding:clamp(24px,3.4vw,46px);
  font-size:17px;line-height:1.85;color:var(--c-text-2);
  box-shadow:var(--sh-1);
}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body a{color:var(--c-primary-deep);border-bottom:1px solid rgba(122,77,255,.32)}
.article-body a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.article-body h1,.article-body h2{
  position:relative;padding-left:16px;margin:1.9em 0 .75em;
  font-size:clamp(21px,2.4vw,26px);font-weight:800;line-height:1.4;color:var(--c-text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:18px;border-radius:3px;background:var(--grad-brand);
}
.article-body h3{
  position:relative;padding-left:16px;margin:1.6em 0 .6em;
  font-size:19px;font-weight:700;line-height:1.45;color:var(--c-text);
}
.article-body h3::before{
  content:"";position:absolute;left:2px;top:.55em;width:8px;height:8px;border-radius:50%;background:var(--c-secondary);
}
.article-body h4{margin:1.4em 0 .5em;font-size:17px;font-weight:700;color:var(--c-text)}
.article-body ul,.article-body ol{margin:0 0 1.3em}
.article-body ul>li,.article-body ol>li{position:relative;padding-left:26px;margin-bottom:.55em}
.article-body ul>li::before{
  content:"";position:absolute;left:4px;top:.72em;width:8px;height:8px;border-radius:3px;background:var(--grad-brand);
}
.article-body ol{counter-reset:art-li}
.article-body ol>li{counter-increment:art-li}
.article-body ol>li::before{
  content:counter(art-li);position:absolute;left:0;top:.34em;
  width:18px;height:18px;line-height:18px;text-align:center;
  font-size:11px;font-weight:700;color:#fff;border-radius:6px;background:var(--grad-brand);
  font-family:"DIN Alternate","Barlow",sans-serif;
}
.article-body blockquote{
  margin:1.5em 0;padding:20px 22px;
  background:#F7F4FB;border-left:4px solid transparent;
  border-image:var(--grad-brand) 1;border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--c-text-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  width:100%;max-width:100%;margin:24px auto;border-radius:16px;box-shadow:var(--sh-1);
}
.article-body figure{margin:24px 0}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--c-text-3)}
.article-body table{
  display:block;width:100%;overflow-x:auto;margin:1.4em 0;
  border-collapse:collapse;border-radius:14px;font-size:15px;white-space:nowrap;
}
.article-body thead th{background:#F5F1FF;color:var(--c-text);font-weight:700}
.article-body th,.article-body td{
  padding:12px 16px;border:1px solid var(--c-line);text-align:left;
}
.article-body tbody tr:nth-child(even){background:#FCFAF8}
.article-body strong{color:var(--c-text);font-weight:700}
.article-body hr{margin:2em 0;border:0;height:1px;background:var(--c-line)}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:48px 16px;
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.empty-state svg{width:48px;height:48px;color:var(--c-primary)}
.empty-title{font-size:17px;font-weight:700;color:var(--c-text)}
.empty-desc{font-size:13.5px;color:var(--c-text-3);max-width:420px}
.empty-state .btn{margin-top:8px}

/* ---------- 文末 ---------- */
.article-foot{
  margin-top:24px;padding:22px 24px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:16px;
}
.tag-row,.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.foot-label{font-size:13px;font-weight:600;color:var(--c-text-3)}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--c-primary-deep);
  background:rgba(122,77,255,.08);border:1px solid rgba(122,77,255,.2);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.tag:hover{background:rgba(122,77,255,.16);transform:translateY(-2px)}
.share-btn{
  width:38px;height:38px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line-strong);background:#fff;color:var(--c-text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.share-btn:hover{color:var(--c-primary-deep);border-color:var(--c-primary);transform:translateY(-2px)}
.foot-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 侧栏 ---------- */
.article-side{display:flex;flex-direction:column;gap:18px}
.side-card{
  position:sticky;top:0;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);
}
.article-side .side-card:first-child{top:calc(var(--nav-h) + 24px)}
.article-side .side-card:nth-child(2){top:calc(var(--nav-h) + 24px);position:static}
.side-title{
  font-size:16px;font-weight:700;color:var(--c-text);
  margin-bottom:14px;padding-left:12px;position:relative;
}
.side-title::before{
  content:"";position:absolute;left:0;top:.35em;width:4px;height:15px;border-radius:3px;background:var(--grad-brand);
}
.side-list li{
  position:relative;padding-left:18px;margin-bottom:10px;
  font-size:14px;line-height:1.7;color:var(--c-text-2);
}
.side-list li:last-child{margin-bottom:0}
.side-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:2px;background:var(--c-secondary);
}
.side-card-grad{
  background:var(--c-deep);border-color:transparent;color:#fff;
}
.side-card-grad .side-title{color:#fff}
.side-card-grad p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.76);margin-bottom:16px}
.side-links li{border-bottom:1px dashed var(--c-line)}
.side-links li:last-child{border-bottom:0}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 0;font-size:14.5px;color:var(--c-text-2);
}
.side-links a:hover{color:var(--c-primary-deep)}
.side-links a span{color:var(--c-text-3);font-size:13px}

/* ---------- 相关入口 ---------- */
.related-section{padding:88px 0 0}
.section-head{max-width:660px;margin-bottom:32px}
.section-head h2{
  margin-top:14px;font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.35;color:var(--c-text);
}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--c-text-2)}
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-line-strong)}
.post-cover{position:relative;overflow:hidden;aspect-ratio:16/10;background:#F2EDF8}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.post-card:hover .post-cover img{transform:scale(1.04)}
.post-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-cat{
  align-self:flex-start;padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:600;color:var(--c-primary-deep);background:rgba(122,77,255,.09);
}
.post-title{font-size:17px;font-weight:700;line-height:1.5;color:var(--c-text);transition:color .2s var(--ease)}
.post-card:hover .post-title{color:var(--c-primary-deep)}
.post-desc{font-size:14px;line-height:1.7;color:var(--c-text-2)}
.post-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-text-3);
}
.post-foot .arrow{transition:transform .2s var(--ease);color:var(--c-primary-deep);font-size:16px}
.post-card:hover .post-foot .arrow{transform:translateX(4px)}

/* ---------- 咨询表单 ---------- */
.consult-section{padding:88px 0 0}
.consult-wrap{
  background:linear-gradient(135deg,#F4EFFF 0%,#EAFBF6 100%);
  border:1px solid var(--c-line);border-radius:var(--r-card-lg);
  padding:clamp(26px,4vw,52px);
}
.consult-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;color:var(--c-text)}
.consult-lead{margin-top:14px;font-size:15.5px;line-height:1.8;color:var(--c-text-2);max-width:460px}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:10px;font-size:14.5px;color:var(--c-text-2);line-height:1.7}
.check-list svg{flex:0 0 auto;margin-top:4px;color:var(--c-secondary)}
.consult-form{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:clamp(20px,2.6vw,30px);box-shadow:var(--sh-1);
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.field{display:flex;flex-direction:column;gap:8px}
.field-full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:600;color:var(--c-text)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 16px;font-size:15px;
  background:#FCFAF8;border:1px solid var(--c-line);color:var(--c-text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field input,.field select{height:48px;padding:0 16px}
.field textarea{min-height:112px;resize:vertical;line-height:1.7;padding:12px 16px}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(122,77,255,.12);
}
.field select{
  appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--c-text-2) 50%),linear-gradient(135deg,var(--c-text-2) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;
}
.form-note{grid-column:1 / -1;font-size:12.5px;color:var(--c-text-3);line-height:1.7}
.form-tip{
  grid-column:1 / -1;display:none;padding:10px 14px;border-radius:12px;
  font-size:13.5px;background:rgba(23,200,166,.12);color:#0E7C67;
}
.form-tip.is-show{display:block}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;background:var(--c-deep);color:#fff;position:relative;
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand)}
.footer-main{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding:64px 0 44px;
}
.footer-brand .brand{margin-bottom:18px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px}
.footer-col h4{
  font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;position:relative;padding-left:12px;
}
.footer-col h4::before{
  content:"";position:absolute;left:0;top:.32em;width:4px;height:14px;border-radius:3px;background:var(--grad-brand);
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col .plain{font-size:14px;color:rgba(255,255,255,.66);line-height:1.6}
.footer-col a:hover{color:var(--c-secondary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.1);
  font-size:12.5px;color:rgba(255,255,255,.46);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .article-side{flex-direction:column}
  .article-side .side-card,.article-side .side-card:first-child,.article-side .side-card:nth-child(2){position:static;top:auto}
  .article-layout>.article-col{order:1}
  .article-side{order:2;margin-top:24px}
  .footer-main{grid-template-columns:1fr 1fr;gap:30px;padding:52px 0 36px}
  .related-section,.consult-section{padding-top:68px}
}
@media (max-width:768px){
  .nav-group{display:none}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .container{padding:0 18px}
  .grid-x{margin-left:-8px;margin-right:-8px}
  .grid-x>.cell{padding-left:8px;padding-right:8px}
  .article-title{margin-top:14px}
  .article-main{padding-top:30px}
  .hero-figure img{aspect-ratio:16/9}
  .breadcrumb li[aria-current]{max-width:64vw}
  .site-footer{margin-top:68px}
  .footer-main{grid-template-columns:1fr;gap:26px;padding:44px 0 30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .article-body{font-size:16px;border-radius:20px;padding:22px 18px}
  .article-body h2{padding-left:13px}
  .consult-form{grid-template-columns:1fr}
  .article-foot{padding:18px}
  .foot-actions .btn{width:100%}
  .btn{padding:13px 22px;min-height:44px}
  .post-body{padding:18px}
}

/* roulang page: category1 */
/* ============ 1. 设计变量 ============ */
:root{
  --c-primary:#7A4DFF;
  --c-primary-deep:#5A31D6;
  --c-secondary:#17C8A6;
  --c-warm:#FF6A3D;
  --c-gold:#FFB020;
  --c-bg:#FBF8F4;
  --c-surface:#FFFFFF;
  --c-deep:#171326;
  --c-text:#1B1830;
  --c-text-2:#5C5872;
  --c-text-3:#8B87A0;
  --c-line:#ECE7F2;
  --c-line-strong:#DDD5EA;
  --grad-brand:linear-gradient(120deg,#7A4DFF 0%,#17C8A6 100%);
  --grad-warm:linear-gradient(120deg,#FF6A3D 0%,#FFB020 100%);
  --r-sm:12px; --r-md:14px; --r-lg:20px; --r-xl:28px; --r-pill:999px;
  --sh-1:0 2px 8px rgba(27,24,48,.05);
  --sh-2:0 16px 40px rgba(27,24,48,.10);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"DIN Alternate","Barlow","HarmonyOS Sans SC",system-ui,sans-serif;
}

/* ============ 2. 基础排版 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.75;
  color:var(--c-text);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
::selection{background:rgba(122,77,255,.18)}

/* ============ 3. 容器与栅格微调 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.grid-x{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px}
.section{padding:92px 0}
.section-tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.4px;color:var(--c-primary);
  background:rgba(122,77,255,.09);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad-brand)}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.35;letter-spacing:-.3px}
.section-sub{margin-top:12px;color:var(--c-text-2);font-size:15.5px}
.head-bar{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.head-bar span{width:4px;height:20px;border-radius:3px;background:var(--grad-brand)}

/* ============ 4. 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,248,244,.94);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;transition:var(--t);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.97);
  border-bottom-color:var(--c-line);
  box-shadow:0 2px 12px rgba(27,24,48,.06);
}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;
  align-items:center;gap:18px;min-height:74px;
}
.nav-group{display:flex;align-items:center;gap:22px}
.nav-group-left{justify-content:flex-start}
.nav-group-right{justify-content:flex-end}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);
  padding:8px 2px;white-space:nowrap;transition:var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;
  border-radius:2px;background:var(--grad-brand);
  transform:translateX(-50%);transition:var(--t);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{width:60%}
.nav-link.active{color:var(--c-primary);font-weight:700}
.nav-link.active::after{width:60%}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;font-size:19px;font-weight:800;letter-spacing:-.3px;color:var(--c-text)}
.brand-mark{
  width:34px;height:34px;border-radius:12px;background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(122,77,255,.28);flex:0 0 auto;
}
.brand-text{white-space:nowrap}

/* ============ 5. 按钮体系 ============ */
.btn,.button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--r-pill);
  padding:14px 28px;font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;text-decoration:none;margin:0;
  background-image:none;transition:var(--t);
}
.btn svg,.button svg{transition:var(--t)}
.btn:hover svg,.button:hover svg{transform:translateX(2px)}
.btn:active,.button:active{transform:scale(.98)}
.btn-primary,.button.btn-primary{
  background:var(--grad-brand);color:#fff;
  box-shadow:0 10px 26px rgba(122,77,255,.28);
}
.btn-primary:hover,.button.btn-primary:hover{
  filter:brightness(1.06);box-shadow:0 14px 32px rgba(122,77,255,.34);color:#fff;
}
.btn-outline,.button.btn-outline{
  background:var(--c-surface);color:var(--c-primary-deep);
  border-color:rgba(122,77,255,.42);
}
.btn-outline:hover,.button.btn-outline:hover{
  background:rgba(122,77,255,.06);border-color:var(--c-primary);color:var(--c-primary-deep);
}
.btn-ghost,.button.btn-ghost{
  background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.34);
}
.btn-ghost:hover,.button.btn-ghost:hover{background:rgba(255,255,255,.18);color:#fff}
.btn-sm,.button.btn-sm{padding:11px 20px;font-size:14px}
.btn-block{width:100%}

/* ============ 6. 移动端菜单 ============ */
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;
  border-radius:var(--r-md);border:1px solid var(--c-line-strong);background:#fff;
  flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
  transition:var(--t);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:var(--t)}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-panel{
  display:none;position:absolute;left:18px;right:18px;top:calc(100% + 10px);
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);box-shadow:var(--sh-2);padding:18px;
}
.mobile-panel.is-open{display:block}
.mobile-group{display:flex;flex-direction:column;gap:4px;padding-bottom:14px;margin-bottom:14px;border-bottom:1px solid var(--c-line)}
.mobile-label{font-size:12.5px;color:var(--c-text-3);margin-bottom:8px;letter-spacing:.5px}
.mobile-group a{
  padding:12px 12px;border-radius:var(--r-md);font-size:15px;font-weight:500;
  color:var(--c-text-2);transition:var(--t);
}
.mobile-group a:hover{background:rgba(122,77,255,.07);color:var(--c-primary)}
.mobile-group a.active{background:rgba(122,77,255,.10);color:var(--c-primary);font-weight:700}

/* ============ 7. 面包屑 ============ */
.crumb-wrap{padding:24px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-3)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--c-line-strong)}
.breadcrumb a{color:var(--c-text-2);transition:var(--t)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .current{color:var(--c-text-3)}

/* ============ 8. 页头区 ============ */
.page-hero{padding:36px 0 72px;position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;
  border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(122,77,255,.20),rgba(23,200,166,.06) 62%,transparent 72%);
}
.page-hero::after{
  content:"";position:absolute;bottom:-180px;left:-140px;width:420px;height:420px;
  border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(23,200,166,.16),transparent 68%);
}
.hero-grid{position:relative;z-index:1;align-items:center}
.hero-text h1{
  font-size:clamp(28px,4.2vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.5px;
}
.hero-text h1 em{
  font-style:normal;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin-top:16px;font-size:clamp(16px,1.5vw,18px);font-weight:600;color:var(--c-text-2);
}
.hero-desc{margin-top:14px;color:var(--c-text-2);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.badge{
  display:flex;flex-direction:column;gap:2px;min-width:126px;
  padding:12px 18px;border-radius:var(--r-md);
  background:var(--c-surface);box-shadow:var(--sh-1);
  border:1px solid transparent;
  background-image:linear-gradient(var(--c-surface),var(--c-surface)),var(--grad-brand);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.badge b{font-family:var(--font-num);font-size:26px;font-weight:800;line-height:1.1;color:var(--c-primary-deep);letter-spacing:-.5px}
.badge span{font-size:12.5px;color:var(--c-text-3)}
.hero-media{position:relative}
.hero-media img{
  width:100%;border-radius:var(--r-xl);box-shadow:var(--sh-2);object-fit:cover;aspect-ratio:16/12;
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-xl);
  background:linear-gradient(140deg,rgba(122,77,255,.22),rgba(23,200,166,.10) 55%,transparent 78%);
  pointer-events:none;
}

/* ============ 9. 交错图文 ============ */
.feature-row{align-items:center;margin-bottom:72px}
.feature-row:last-child{margin-bottom:0}
.feature-media img{
  width:100%;border-radius:var(--r-lg);object-fit:cover;aspect-ratio:16/10;
  box-shadow:var(--sh-1);transition:var(--t);
}
.feature-media img:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.feature-text h3{font-size:clamp(19px,2vw,21px);font-weight:700;line-height:1.45;margin-bottom:14px}
.feature-text p{color:var(--c-text-2)}
.point-list{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--c-text-2)}
.point-list li::before{
  content:"";flex:0 0 auto;width:20px;height:20px;margin-top:4px;border-radius:7px;
  background:var(--grad-brand);opacity:.9;
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='m9.6 16.6-4.2-4.2 1.5-1.5 2.7 2.7 7.5-7.5 1.5 1.5z'/%3E%3C/svg%3E") center/16px no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='m9.6 16.6-4.2-4.2 1.5-1.5 2.7 2.7 7.5-7.5 1.5 1.5z'/%3E%3C/svg%3E") center/16px no-repeat;
}
@media (min-width:1024px){
  .feature-row.rev .feature-media{order:2}
  .feature-row.rev .feature-text{order:1}
}

/* ============ 10. 编号步骤 ============ */
.step-panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-xl);
  padding:44px;box-shadow:var(--sh-1);
}
.step-list{display:flex;flex-direction:column}
.step-item{display:flex;gap:22px;padding:24px 0;border-bottom:1px dashed var(--c-line-strong)}
.step-item:first-child{padding-top:0}
.step-item:last-child{padding-bottom:0;border-bottom:0}
.step-num{
  flex:0 0 auto;width:52px;height:52px;border-radius:16px;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:20px;font-weight:800;color:#fff;
  background:var(--grad-brand);box-shadow:0 10px 22px rgba(122,77,255,.24);
}
.step-body h3{font-size:18px;font-weight:700;margin-bottom:8px;line-height:1.45}
.step-body p{color:var(--c-text-2);font-size:15.3px}
.step-tag{
  display:inline-block;margin-left:10px;padding:2px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:var(--c-secondary);
  background:rgba(23,200,166,.12);vertical-align:middle;
}

/* ============ 11. 情况卡片 ============ */
.case-card{
  height:100%;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);padding:26px;box-shadow:var(--sh-1);
  transition:var(--t);position:relative;overflow:hidden;
}
.case-card::after{
  content:"";position:absolute;top:-40px;right:-40px;width:110px;height:110px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,77,255,.12),transparent 70%);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(122,77,255,.28)}
.case-icon{
  width:44px;height:44px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(122,77,255,.10);color:var(--c-primary-deep);margin-bottom:16px;
}
.case-card h3{font-size:17px;font-weight:700;margin-bottom:10px;line-height:1.45}
.case-card p{font-size:15px;color:var(--c-text-2)}

/* ============ 12. FAQ 手风琴 ============ */
.faq-wrap{max-width:880px}
.accordion{border:0;background:transparent}
.accordion .accordion-item{border-bottom:1px solid var(--c-line);background:transparent}
.accordion .accordion-item:first-child{border-top:1px solid var(--c-line)}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 4px;font-size:16.5px;font-weight:600;color:var(--c-text);
  border:0;background:transparent;transition:var(--t);line-height:1.5;
}
.accordion .accordion-title:hover{color:var(--c-primary);background:transparent}
.accordion .accordion-title:focus{background:transparent;outline:2px solid var(--c-primary);outline-offset:2px}
.accordion .accordion-title::before{
  content:"";order:2;flex:0 0 auto;width:22px;height:22px;border-radius:8px;
  background:rgba(122,77,255,.10);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M11 5h2v6h6v2h-6v6h-2v-6H5v-2h6z'/%3E%3C/svg%3E") center/16px no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23fff' d='M11 5h2v6h6v2h-6v6h-2v-6H5v-2h6z'/%3E%3C/svg%3E") center/16px no-repeat;
  transition:var(--t);
}
.accordion .accordion-item.is-active .accordion-title{color:var(--c-primary-deep)}
.accordion .accordion-item.is-active .accordion-title::before{
  transform:rotate(135deg);
}
.accordion .accordion-content{
  border:0;padding:18px 24px 22px;background:#F7F4FB;border-radius:var(--r-md);
  color:var(--c-text-2);font-size:15.4px;margin-bottom:20px;
}
.accordion .accordion-content p{margin:0}

/* ============ 13. CTA 横幅 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--c-deep);color:#fff;padding:52px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(122,77,255,.62),rgba(23,200,166,.30) 62%,rgba(23,200,166,.12)),
  url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.9;
}
.cta-band>*{position:relative;z-index:1}
.cta-band h2{font-size:clamp(21px,2.4vw,29px);font-weight:700;line-height:1.4;color:#fff}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.82);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* ============ 14. 反馈表单 ============ */
.form-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-xl);padding:34px;box-shadow:var(--sh-1);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;padding:13px 16px;min-height:48px;
  border:1px solid var(--c-line-strong);border-radius:var(--r-md);
  background:#fff;color:var(--c-text);font-family:inherit;font-size:15px;
  transition:var(--t);appearance:none;-webkit-appearance:none;
}
.field textarea{min-height:120px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--c-text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(122,77,255,.12);
}
.field select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%235C5872' d='M12 15.4 6.6 10l1.4-1.4 4 4 4-4L17.4 10z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:20px;
  padding-right:44px;
}
.form-note{margin-top:14px;font-size:13px;color:var(--c-text-3)}
.form-msg{
  display:none;margin-top:16px;padding:12px 16px;border-radius:var(--r-md);
  background:rgba(23,200,166,.12);color:#0E8F77;font-size:14px;font-weight:600;
}
.form-msg.show{display:block}
.form-side h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.4}
.form-side p{margin-top:14px;color:var(--c-text-2)}
.side-list{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.side-list li{display:flex;gap:12px;font-size:15px;color:var(--c-text-2)}
.side-list li b{color:var(--c-primary-deep);font-weight:700;font-family:var(--font-num)}
.side-badges{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}

/* ============ 15. 页脚 ============ */
.site-footer{
  background:var(--c-deep);color:rgba(255,255,255,.72);
  margin-top:96px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand);
}
.footer-main{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding:64px 0 40px;
}
.footer-brand .brand{color:#fff;justify-self:flex-start;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col .plain{font-size:14px;color:rgba(255,255,255,.66);transition:var(--t)}
.footer-col a:hover{color:var(--c-secondary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.10);
  font-size:12.5px;color:rgba(255,255,255,.44);
}

/* ============ 16. 响应式 ============ */
@media (max-width:1199px){
  .footer-main{grid-template-columns:1.4fr 1fr 1fr;gap:30px}
}
@media (max-width:1023px){
  .nav-group{display:none}
  .nav-toggle{display:inline-flex;justify-self:start}
  .header-inner{grid-template-columns:44px 1fr 44px;min-height:66px}
  .brand{font-size:17px;justify-self:center;gap:8px}
  .brand-mark{width:30px;height:30px;border-radius:10px}
  .section{padding:66px 0}
  .page-hero{padding:26px 0 54px}
  .step-panel{padding:30px}
  .cta-band{padding:36px 28px}
  .form-card{padding:26px}
  .feature-row{margin-bottom:52px}
  .feature-text{margin-top:22px}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px;padding:52px 0 32px}
}
@media (max-width:767px){
  .hero-badges{gap:10px}
  .badge{min-width:0;flex:1 1 calc(50% - 10px);padding:11px 14px}
  .badge b{font-size:22px}
  .hero-actions .btn,.hero-actions .button{flex:1 1 100%}
  .step-item{gap:16px}
  .step-num{width:44px;height:44px;border-radius:14px;font-size:17px}
  .section-head{margin-bottom:32px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .brand{font-size:15px}
  .brand-mark{width:26px;height:26px;border-radius:9px}
  .brand-mark svg{width:15px;height:15px}
  .btn,.button{padding:13px 20px;min-height:44px}
  .step-panel{padding:22px}
  .case-card{padding:22px}
  .footer-main{grid-template-columns:1fr;padding:44px 0 28px}
  .cta-band{padding:28px 20px;border-radius:var(--r-lg)}
}

/* roulang page: category2 */
:root{
  --c-primary:#7A4DFF;
  --c-primary-deep:#5A31D6;
  --c-secondary:#17C8A6;
  --c-warm:#FF6A3D;
  --c-warm-2:#FFB020;
  --c-bg:#FBF8F4;
  --c-surface:#FFFFFF;
  --c-deep:#171326;
  --c-text:#1B1830;
  --c-text-2:#5C5872;
  --c-text-3:#8B87A0;
  --c-line:#ECE7F2;
  --c-line-strong:#DDD5EA;
  --grad-brand:linear-gradient(120deg,#7A4DFF 0%,#17C8A6 100%);
  --grad-warm:linear-gradient(120deg,#FF6A3D 0%,#FFB020 100%);
  --r-card:20px;
  --r-big:28px;
  --r-pill:999px;
  --r-input:14px;
  --sh-1:0 2px 8px rgba(27,24,48,.05);
  --sh-2:0 16px 40px rgba(27,24,48,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0 0 14px;letter-spacing:-.4px;line-height:1.3}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 16px;border-radius:0 0 12px 0;z-index:200}
.skip-link:focus{left:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.6px;
  color:var(--c-primary);
  background:rgba(122,77,255,.08);
  border-radius:var(--r-pill);
  padding:7px 16px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad-brand)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;margin-bottom:12px}
.section-head p{color:var(--c-text-2);font-size:16px;margin:0}
.section-head .head-note{
  display:block;font-size:13px;letter-spacing:2px;text-transform:uppercase;
  color:var(--c-text-3);margin-bottom:10px;font-weight:600;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  padding:14px 28px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  min-height:48px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn .arrow{transition:transform .2s var(--ease);display:inline-block}
.btn:hover .arrow{transform:translateX(3px)}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(122,77,255,.26)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 28px rgba(122,77,255,.32)}
.btn-primary:active{transform:scale(.98)}
.btn-outline{background:var(--c-surface);color:var(--c-primary);border-color:rgba(122,77,255,.42)}
.btn-outline:hover{border-color:var(--c-primary);background:#F7F3FF;transform:translateY(-2px)}
.btn-outline:active{transform:scale(.98)}
.btn-light{background:#fff;color:var(--c-primary-deep)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,0,0,.2)}
.btn-light:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.36)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.7)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{padding:10px 20px;font-size:14px;min-height:42px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(251,248,244,.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  box-shadow:0 2px 14px rgba(27,24,48,.07);
  border-bottom-color:var(--c-line);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:20px;
  min-height:78px;
}
.nav-group{display:flex;align-items:center;gap:4px}
.nav-group-right{justify-content:flex-end;gap:4px}
.nav-link{
  position:relative;
  padding:10px 13px;
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
  border-radius:10px;
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;
  width:0;height:2px;border-radius:2px;
  background:var(--grad-brand);
  transform:translateX(-50%);
  transition:width .22s var(--ease);
}
.nav-link:hover{color:var(--c-primary);background:rgba(122,77,255,.05)}
.nav-link:hover::after{width:60%}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{width:60%}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:19px;font-weight:800;letter-spacing:-.4px;
  color:var(--c-text);white-space:nowrap;
}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  background:var(--grad-brand);
  display:grid;place-items:center;
  box-shadow:0 6px 16px rgba(122,77,255,.3);
  flex:none;
}
.brand-text{line-height:1}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  background:#fff;border:1px solid var(--c-line);
  align-items:center;justify-content:center;
  box-shadow:var(--sh-1);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);position:relative;transition:background .2s}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--c-text);
  transition:transform .22s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-panel{
  display:none;
  position:absolute;left:18px;right:18px;top:calc(100% + 8px);
  background:#fff;border:1px solid var(--c-line);
  border-radius:20px;
  box-shadow:var(--sh-2);
  padding:16px;
  z-index:120;
}
.mobile-panel.is-open{display:block;animation:dropIn .22s var(--ease)}
@keyframes dropIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.mobile-panel .panel-title{
  font-size:12px;letter-spacing:1.5px;color:var(--c-text-3);
  font-weight:700;margin:8px 8px 6px;
}
.mobile-panel a.m-link{
  display:block;padding:13px 14px;border-radius:14px;
  font-size:15px;font-weight:500;color:var(--c-text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.mobile-panel a.m-link:hover,.mobile-panel a.m-link.active{background:#F5F1FF;color:var(--c-primary);font-weight:600}
.mobile-panel .btn{width:100%;margin-top:12px}

/* ============ 面包屑 ============ */
.breadcrumb{padding:22px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-3)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--c-line-strong)}
.breadcrumb a{color:var(--c-text-3);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb [aria-current="page"]{color:var(--c-text-2);font-weight:600}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  padding:26px 0 76px;
  overflow:hidden;
  background:
    radial-gradient(760px 420px at 88% -14%,rgba(122,77,255,.16),transparent 66%),
    radial-gradient(560px 360px at 2% 16%,rgba(23,200,166,.13),transparent 62%);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;margin-top:26px}
.hero-copy h1{font-size:clamp(28px,4.2vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.5px;margin-bottom:16px}
.hero-copy .lead{font-size:17px;color:var(--c-text-2);max-width:520px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-big);
  box-shadow:var(--sh-2);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-big);
  background:linear-gradient(150deg,rgba(122,77,255,.28),rgba(23,200,166,.14) 55%,rgba(23,19,38,.26));
  pointer-events:none;
}
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:14px;margin-top:52px;
}
.stat{
  position:relative;
  background:#fff;border-radius:16px;
  padding:18px 20px;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.stat::before{
  content:"";position:absolute;inset:0;border-radius:16px;padding:1px;
  background:var(--grad-brand);opacity:.5;pointer-events:none;
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;
  mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  mask-composite:exclude;
}
.stat .num{
  font-family:"DIN Alternate","Barlow","HarmonyOS Sans SC",sans-serif;
  font-size:30px;font-weight:800;line-height:1.1;color:var(--c-text);
  display:flex;align-items:baseline;gap:4px;
}
.stat .num em{font-style:normal;font-size:14px;font-weight:600;color:var(--c-text-3)}
.stat .label{font-size:13px;color:var(--c-text-3);margin-top:4px}

/* ============ 阶梯 / 时间轴分块 ============ */
.ladder{position:relative}
.ladder-inner{position:relative}
.ladder-inner::before{
  content:"";position:absolute;left:31px;top:18px;bottom:18px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,rgba(122,77,255,.4),rgba(23,200,166,.36));
}
.step{position:relative;padding-left:92px;margin-bottom:48px}
.step:last-child{margin-bottom:0}
.step-num{
  position:absolute;left:0;top:4px;
  width:64px;height:64px;border-radius:18px;
  background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;
  font-family:"DIN Alternate","Barlow",sans-serif;
  font-size:20px;font-weight:800;
  box-shadow:0 10px 24px rgba(122,77,255,.28);
}
.step-card{
  display:grid;grid-template-columns:1.12fr .88fr;
  background:#fff;border:1px solid var(--c-line);border-radius:24px;
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.step:nth-child(even) .step-card{grid-template-columns:.88fr 1.12fr}
.step:nth-child(even) .step-media{order:-1}
.step-body{padding:32px}
.step-body h3{font-size:19px;font-weight:700;margin-bottom:14px}
.step-body .tag{
  display:inline-block;font-size:12.5px;font-weight:600;
  color:var(--c-secondary);background:rgba(23,200,166,.1);
  border-radius:var(--r-pill);padding:5px 12px;margin-bottom:14px;
}
.point-list li{
  position:relative;padding-left:24px;margin-bottom:10px;
  font-size:15.5px;color:var(--c-text-2);
}
.point-list li:last-child{margin-bottom:0}
.point-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:10px;height:10px;border-radius:4px;
  background:var(--grad-brand);opacity:.85;
}
.step-media img{width:100%;height:100%;min-height:280px;object-fit:cover}

/* ============ 设备差异对比 ============ */
.device-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
.device-card{
  background:#fff;border:1px solid var(--c-line);border-radius:24px;
  padding:32px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.device-card h3{font-size:19px;margin-bottom:14px}
.device-card .kv{
  display:flex;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px dashed var(--c-line-strong);
  font-size:14.5px;
}
.device-card .kv:last-of-type{border-bottom:0}
.device-card .kv span:first-child{color:var(--c-text-3)}
.device-card .kv span:last-child{font-weight:600}
.device-card.accent{
  background:linear-gradient(160deg,#241C3E 0%,#171326 100%);
  border-color:rgba(255,255,255,.08);
  color:#fff;position:relative;overflow:hidden;
}
.device-card.accent::after{
  content:"";position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,200,166,.35),transparent 68%);
}
.device-card.accent h3{color:#fff}
.device-card.accent p{color:rgba(255,255,255,.72);font-size:15px}
.device-card.accent .mini-list li{
  position:relative;padding-left:22px;margin-bottom:10px;
  font-size:14.5px;color:rgba(255,255,255,.8);
}
.device-card.accent .mini-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:linear-gradient(120deg,#7A4DFF,#17C8A6);
}

/* ============ 深色状态带 ============ */
.dark-band{
  background:linear-gradient(135deg,#1E1836 0%,#171326 58%,#221A3C 100%);
  color:#fff;
  padding:88px 0;
  position:relative;
  overflow:hidden;
}
.dark-band::before{
  content:"";position:absolute;left:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,77,255,.3),transparent 68%);
}
.dark-band .section-head h2{color:#fff}
.dark-band .section-head p{color:rgba(255,255,255,.68)}
.dark-band .head-note{color:rgba(255,255,255,.42)}
.status-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  position:relative;z-index:1;
}
.status-card{
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.1);
  border-radius:18px;
  padding:22px;
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.status-card:hover{transform:translateY(-4px);border-color:rgba(23,200,166,.5);background:rgba(255,255,255,.09)}
.status-card .dot{
  width:9px;height:9px;border-radius:50%;background:var(--c-secondary);
  display:inline-block;margin-right:8px;box-shadow:0 0 0 4px rgba(23,200,166,.16);
}
.status-card .st-name{font-size:13px;color:rgba(255,255,255,.62);letter-spacing:.5px}
.status-card .st-val{
  font-family:"DIN Alternate","Barlow",sans-serif;
  font-size:26px;font-weight:800;margin:10px 0 6px;line-height:1.2;
}
.status-card .st-desc{font-size:13.5px;color:rgba(255,255,255,.6);margin:0}

/* ============ 流程步骤 ============ */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.flow-item{
  position:relative;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.flow-item:hover{transform:translateY(-6px);box-shadow:var(--sh-2)}
.flow-item .no{
  font-family:"DIN Alternate","Barlow",sans-serif;
  font-size:13px;font-weight:700;letter-spacing:1.5px;color:var(--c-secondary);
}
.flow-item h3{font-size:17px;margin:10px 0 8px}
.flow-item p{font-size:14.5px;color:var(--c-text-2);margin:0}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:16px;
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item[open]{border-color:rgba(122,77,255,.32);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;
  padding:20px 60px 20px 22px;
  font-size:16.5px;font-weight:600;color:var(--c-text);
  position:relative;cursor:pointer;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-primary)}
.faq-item summary::after{
  content:"+";
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--c-primary);line-height:1;
  transition:transform .2s var(--ease);
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.faq-body{
  padding:0 22px 22px;
  font-size:15px;color:var(--c-text-2);
  border-top:1px solid var(--c-line);
  padding-top:16px;
  margin:0 22px 22px;
  background:#F7F4FB;
  border-radius:14px;
}
.faq-body{border-top:0}

/* ============ CTA 条 ============ */
.cta-band{
  background:linear-gradient(135deg,#221A3C 0%,#171326 100%);
  color:#fff;padding:64px 0;
  position:relative;overflow:hidden;
  border-top:2px solid transparent;
  border-image:linear-gradient(120deg,#7A4DFF,#17C8A6) 1;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-100px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,77,255,.35),transparent 68%);
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;z-index:1;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.4vw,28px);color:#fff;margin-bottom:10px}
.cta-inner p{color:rgba(255,255,255,.7);margin:0;max-width:560px;font-size:15.5px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-deep);
  color:#fff;
  padding:64px 0 28px;
  border-top:2px solid transparent;
  border-image:linear-gradient(120deg,#7A4DFF,#17C8A6) 1;
}
.footer-main{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.09);
}
.brand{color:#fff}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{color:rgba(255,255,255,.62);font-size:14.5px;max-width:340px;margin:0}
.footer-col h4{
  font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;
}
.footer-col ul li{margin-bottom:11px}
.footer-col a,.footer-col .plain{
  font-size:14px;color:rgba(255,255,255,.66);
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--c-secondary)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;
  font-size:12.5px;color:rgba(255,255,255,.42);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-group{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{grid-template-columns:auto 1fr auto;gap:12px}
  .brand{justify-self:center;font-size:17px}
  .header-cta{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{order:-1}
  .stat-strip{grid-template-columns:repeat(2,1fr);margin-top:34px}
  .device-grid{grid-template-columns:1fr}
  .status-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:60px 0}
  .section-tight{padding:48px 0}
  .page-hero{padding:16px 0 56px}
  .hero-copy .lead{font-size:16px}
  .hero-actions .btn{flex:1 1 auto}
  .ladder-inner::before{left:19px}
  .step{padding-left:0;margin-bottom:34px}
  .step-num{position:static;width:52px;height:52px;border-radius:15px;font-size:17px;margin-bottom:14px}
  .step-card,
  .step:nth-child(even) .step-card{grid-template-columns:1fr}
  .step:nth-child(even) .step-media{order:0}
  .step-media img{min-height:200px;aspect-ratio:16/10}
  .step-body{padding:24px 20px}
  .device-card{padding:24px 20px}
  .flow{grid-template-columns:1fr}
  .status-grid{grid-template-columns:1fr}
  .dark-band{padding:60px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-main{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .stat-strip{grid-template-columns:1fr}
  .stat .num{font-size:26px}
  .brand-text{font-size:15px;white-space:normal;line-height:1.2}
  .brand{font-size:15px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
}

/* roulang page: category3 */
:root{
  --c-primary:#7A4DFF;
  --c-primary-deep:#5A31D6;
  --c-secondary:#17C8A6;
  --c-warm-1:#FF6A3D;
  --c-warm-2:#FFB020;
  --c-bg:#FBF8F4;
  --c-surface:#FFFFFF;
  --c-deep:#171326;
  --c-text:#1B1830;
  --c-text-2:#5C5872;
  --c-text-3:#8B87A0;
  --c-line:#ECE7F2;
  --c-line-strong:#DDD5EA;
  --g-brand:linear-gradient(120deg,#7A4DFF 0%,#17C8A6 100%);
  --g-warm:linear-gradient(120deg,#FF6A3D 0%,#FFB020 100%);
  --r-card:20px;
  --r-card-lg:28px;
  --r-btn:999px;
  --r-input:14px;
  --sh-1:0 2px 8px rgba(27,24,48,.05);
  --sh-2:0 16px 40px rgba(27,24,48,.10);
  --sp-section:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"DIN Alternate","Barlow","HarmonyOS Sans SC","PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--c-bg);-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;padding:0;font-family:var(--font);font-size:16px;line-height:1.75;font-weight:400;color:var(--c-text);background:var(--c-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block;border:0}
figure{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--c-text);letter-spacing:-.2px}
p{margin:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover,a:focus{color:var(--c-primary-deep);text-decoration:none}
button{font-family:inherit;font-size:inherit;color:inherit;border:0;background:none;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--c-text)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
::selection{background:rgba(122,77,255,.18)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sp-section) 0}
.section-alt{background:linear-gradient(180deg,#FBF8F4 0%,#F6F2FC 100%)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:var(--r-btn);font-size:15.5px;font-weight:600;line-height:1;border:1px solid transparent;text-decoration:none;min-height:48px;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.btn-primary{background:var(--g-brand);color:#fff;box-shadow:0 10px 24px rgba(122,77,255,.26)}
.btn-primary:hover{color:#fff;filter:brightness(1.05);box-shadow:0 14px 32px rgba(122,77,255,.32);transform:translateY(-1px)}
.btn-outline{background:var(--c-surface);color:var(--c-primary);border-color:rgba(122,77,255,.42)}
.btn-outline:hover{color:var(--c-primary-deep);border-color:var(--c-primary);background:rgba(122,77,255,.06)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.34)}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff}
.btn-sm{padding:10px 20px;font-size:14px;min-height:40px}
.btn-block{width:100%}
.btn:active{transform:scale(.98)}
.btn .arrow{display:inline-block;transition:transform .2s var(--ease)}
.btn:hover .arrow{transform:translateX(2px)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(251,248,244,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease)}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--c-line);box-shadow:0 2px 14px rgba(27,24,48,.06)}
.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;min-height:78px}
.nav-group{display:flex;align-items:center;gap:26px}
.nav-group-left{justify-content:flex-start}
.nav-group-right{justify-content:flex-end;gap:22px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--c-text-2);padding:6px 0;white-space:nowrap;transition:color .2s var(--ease)}
.nav-link::after{content:"";position:absolute;left:50%;right:50%;bottom:-3px;height:2px;border-radius:2px;background:var(--g-brand);transition:left .22s var(--ease),right .22s var(--ease)}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{left:20%;right:20%}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{left:20%;right:20%}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;text-decoration:none}
.brand-mark{width:36px;height:36px;border-radius:12px;background:var(--g-brand);display:inline-flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(122,77,255,.28);flex:0 0 36px}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.3px;color:var(--c-text);white-space:nowrap}
.nav-cta{white-space:nowrap}
.nav-toggle{display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--c-line-strong);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-panel{display:none;overflow:hidden;max-height:0;transition:max-height .3s var(--ease)}
.mobile-panel.open{max-height:640px}
.mobile-panel-inner{background:#fff;border:1px solid var(--c-line);border-radius:20px;box-shadow:var(--sh-2);padding:18px;margin:0 0 16px}
.mobile-nav{display:grid;gap:4px;margin-bottom:12px}
.mobile-link{display:block;padding:12px 14px;border-radius:14px;font-size:15px;font-weight:500;color:var(--c-text-2)}
.mobile-link:hover{background:#F7F4FB;color:var(--c-primary)}
.mobile-link.active{background:rgba(122,77,255,.08);color:var(--c-primary);font-weight:600}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-3);margin-bottom:26px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--c-line-strong)}
.breadcrumb a{color:var(--c-text-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb [aria-current]{color:var(--c-text-2)}

/* ---------- 页头 ---------- */
.page-hero{position:relative;padding:34px 0 0;overflow:hidden}
.page-hero::after{content:"";position:absolute;top:-180px;right:-140px;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(122,77,255,.20),rgba(23,200,166,.10) 46%,transparent 72%);pointer-events:none;z-index:0}
.page-hero .container{position:relative;z-index:1}
.page-hero-grid{margin-bottom:0}
.pill-tag{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;background:rgba(122,77,255,.08);border:1px solid rgba(122,77,255,.22);color:var(--c-primary);font-size:13px;font-weight:600;letter-spacing:.4px}
.page-hero h1{font-size:clamp(28px,4.2vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.5px;margin:18px 0 0}
.hero-sub{margin-top:16px;font-size:16.5px;color:var(--c-text-2);max-width:580px}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px}
.hero-meta span{font-size:13px;color:var(--c-text-3);padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--c-line)}
.hero-media{border-radius:var(--r-card-lg);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/11;position:relative}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(160deg,rgba(122,77,255,.18),rgba(23,200,166,.10) 60%,rgba(23,19,38,0) 100%)}

/* ---------- 板块标题 ---------- */
.section-head{max-width:780px;margin-bottom:38px}
.section-head h2{font-size:clamp(22px,2.6vw,32px);position:relative;padding-left:16px;margin-top:14px}
.section-head h2::before{content:"";position:absolute;left:0;top:.26em;bottom:.26em;width:4px;border-radius:4px;background:var(--g-brand)}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--c-text-2)}

/* ---------- FAQ ---------- */
.faq-layout{padding-top:72px}
.faq-acc{border-top:1px solid var(--c-line-strong)}
.faq-item{border-bottom:1px solid var(--c-line-strong)}
.faq-q{margin:0}
.faq-trigger{width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:21px 4px;text-align:left;font-size:16.5px;font-weight:600;line-height:1.55;color:var(--c-text);transition:color .2s var(--ease)}
.faq-trigger:hover{color:var(--c-primary)}
.faq-trigger .faq-icon{position:relative;flex:0 0 22px;width:22px;height:22px;border-radius:8px;background:rgba(122,77,255,.10);margin-top:3px;transition:background .2s var(--ease)}
.faq-trigger .faq-icon::before,
.faq-trigger .faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;transform:translate(-50%,-50%);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.faq-trigger .faq-icon::before{width:11px;height:2px}
.faq-trigger .faq-icon::after{width:2px;height:11px}
.faq-item.open .faq-trigger{color:var(--c-primary)}
.faq-item.open .faq-trigger .faq-icon{background:rgba(122,77,255,.16)}
.faq-item.open .faq-trigger .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s var(--ease)}
.faq-a-inner{background:#F7F4FB;border-radius:16px;padding:18px 22px;margin:0 0 20px;font-size:15px;color:var(--c-text-2);line-height:1.8}
.faq-a-inner p+p{margin-top:10px}

/* ---------- 右侧信息卡 ---------- */
.info-card{position:sticky;top:106px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card-lg);padding:28px;box-shadow:var(--sh-1)}
.info-card h3{font-size:18px}
.info-card-desc{margin-top:10px;font-size:14px;color:var(--c-text-3);line-height:1.7}
.mini-badges{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0 22px}
.mini-badge{position:relative;padding:16px 12px;border-radius:16px;background:#FBF9FF;text-align:center}
.mini-badge::before{content:"";position:absolute;inset:0;border-radius:16px;padding:1px;background:var(--g-brand);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.mini-badge b{display:block;font-family:var(--font-num);font-size:30px;font-weight:800;line-height:1.1;color:var(--c-primary-deep);letter-spacing:-.5px}
.mini-badge b i{font-style:normal;font-size:14px;font-weight:600;margin-left:3px;color:var(--c-secondary)}
.mini-badge span{display:block;margin-top:6px;font-size:12.5px;color:var(--c-text-3);line-height:1.5}
.info-list{border-top:1px solid var(--c-line);margin-bottom:22px}
.info-list li{display:flex;gap:10px;padding:14px 0;border-bottom:1px solid var(--c-line);font-size:14.5px;color:var(--c-text-2);line-height:1.65}
.info-list li::before{content:"";flex:0 0 7px;width:7px;height:7px;margin-top:9px;border-radius:50%;background:var(--c-secondary)}

/* ---------- 自检清单 ---------- */
.checklist-media{border-radius:var(--r-card-lg);overflow:hidden;box-shadow:var(--sh-1);aspect-ratio:4/5;position:relative}
.checklist-media img{width:100%;height:100%;object-fit:cover}
.checklist-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(23,19,38,0) 55%,rgba(23,19,38,.34) 100%)}
.check-list{display:grid;gap:16px}
.check-item{display:flex;gap:18px;padding:20px 22px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.check-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-line-strong)}
.check-num{flex:0 0 44px;height:44px;border-radius:14px;background:var(--g-brand);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-num);font-size:15px;font-weight:800;letter-spacing:.5px}
.check-body h3{font-size:17px;margin-bottom:6px}
.check-body p{font-size:14.5px;color:var(--c-text-2);line-height:1.75}

/* ---------- 异常速查 ---------- */
.trouble-wrap{background:#fff;border:1px solid var(--c-line);border-radius:24px;overflow:hidden;box-shadow:var(--sh-1)}
.trouble-head{display:grid;grid-template-columns:1fr 1.15fr 1.25fr;gap:18px;padding:16px 26px;background:#F7F4FB;font-size:13.5px;font-weight:700;color:var(--c-text-2);letter-spacing:.4px}
.trouble-row{display:grid;grid-template-columns:1fr 1.15fr 1.25fr;gap:18px;padding:20px 26px;border-top:1px solid var(--c-line);align-items:center;transition:background .2s var(--ease)}
.trouble-row:hover{background:#FBFAFE}
.trouble-symptom{display:flex;align-items:center;gap:10px;font-size:15.5px;font-weight:600;color:var(--c-text)}
.trouble-symptom::before{content:"";flex:0 0 8px;width:8px;height:8px;border-radius:50%;background:var(--g-warm)}
.trouble-cell{font-size:14.5px;color:var(--c-text-2);line-height:1.7}
.trouble-fix{color:var(--c-primary-deep);font-weight:500}

/* ---------- 深色指标条 ---------- */
.metrics-band{position:relative;border-radius:var(--r-card-lg);padding:46px 40px;color:#fff;background-color:var(--c-deep);background-image:linear-gradient(120deg,rgba(23,19,38,.94),rgba(90,49,214,.80)),url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;overflow:hidden;box-shadow:var(--sh-2)}
.metrics-band h2{color:#fff;font-size:clamp(20px,2.4vw,28px)}
.metrics-band>p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);max-width:640px}
.metrics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px}
.metric{padding:22px;border-radius:var(--r-card);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14)}
.metric b{display:block;font-family:var(--font-num);font-size:32px;font-weight:800;line-height:1.1;color:#fff;letter-spacing:-.5px}
.metric b i{font-style:normal;font-size:14px;font-weight:600;margin-left:3px;color:var(--c-secondary)}
.metric span{display:block;margin-top:8px;font-size:13.5px;color:rgba(255,255,255,.70)}

/* ---------- CTA ---------- */
.cta-band{position:relative;border-radius:var(--r-card-lg);background:#F3EFFF;border:1px solid var(--c-line-strong);padding:42px 40px;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-70px;top:-90px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(122,77,255,.18),transparent 70%)}
.cta-copy{position:relative;z-index:1;max-width:620px}
.cta-copy h2{font-size:clamp(20px,2.4vw,28px)}
.cta-copy p{margin-top:12px;font-size:15px;color:var(--c-text-2)}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--c-deep);color:rgba(255,255,255,.72);margin-top:96px;padding:64px 0 0}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--g-brand)}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:48px}
.footer-brand .brand{justify-self:flex-start}
.footer-brand .brand-text{color:#fff;font-size:18px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.60);max-width:340px}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col .plain{font-size:14px;color:rgba(255,255,255,.66)}
.footer-col a:hover{color:var(--c-secondary)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.10);font-size:12.5px;color:rgba(255,255,255,.42)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--sp-section:72px}
  .nav-group{display:none}
  .nav-toggle{display:inline-flex;grid-column:1}
  .brand{grid-column:2;justify-self:center}
  .brand-text{font-size:16.5px}
  .brand-mark{width:32px;height:32px;flex:0 0 32px}
  .header-inner{grid-template-columns:44px 1fr 44px;min-height:68px;gap:12px}
  .mobile-panel{display:block}
  .info-card{position:static;margin-top:36px}
  .faq-layout{padding-top:56px}
  .hero-media{margin-top:34px;aspect-ratio:16/10}
  .checklist-media{aspect-ratio:16/10;margin-bottom:32px}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sp-section:56px}
  .container{padding:0 18px}
  .section-head{margin-bottom:28px}
  .page-hero{padding-top:22px}
  .hero-actions .btn{flex:1 1 100%}
  .metrics-band{padding:32px 22px}
  .metrics-grid{grid-template-columns:1fr;gap:14px}
  .cta-band{padding:30px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .trouble-head{display:none}
  .trouble-row{grid-template-columns:1fr;gap:8px;padding:18px 20px}
  .trouble-row .trouble-cell[data-label]::before{content:attr(data-label);display:block;font-size:12px;color:var(--c-text-3);margin-bottom:2px}
  .mini-badges{grid-template-columns:1fr 1fr}
  .footer-main{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .info-card{padding:22px}
  .check-item{padding:18px}
  .btn{min-height:44px}
}

/* roulang page: category4 */
:root{
  --c-primary:#7A4DFF;
  --c-primary-deep:#5A31D6;
  --c-secondary:#17C8A6;
  --c-warm:#FF6A3D;
  --c-amber:#FFB020;
  --c-bg:#FBF8F4;
  --c-surface:#FFFFFF;
  --c-deep:#171326;
  --c-text:#1B1830;
  --c-text-2:#5C5872;
  --c-text-3:#8B87A0;
  --c-line:#ECE7F2;
  --c-line-strong:#DDD5EA;
  --grad-brand:linear-gradient(120deg,#7A4DFF 0%,#17C8A6 100%);
  --grad-warm:linear-gradient(120deg,#FF6A3D 0%,#FFB020 100%);
  --r-sm:14px;
  --r-card:20px;
  --r-lg:28px;
  --sh-1:0 2px 8px rgba(27,24,48,.05);
  --sh-2:0 16px 40px rgba(27,24,48,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;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;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-primary-deep);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1{font-size:clamp(28px,4.2vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.5px;}
h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.35;letter-spacing:-.3px;}
h3{font-size:19px;font-weight:700;line-height:1.45;}
::selection{background:rgba(122,77,255,.18);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:92px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:var(--c-primary);font-family:"DIN Alternate","Barlow",system-ui,sans-serif;}
.section-head .eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--grad-brand);}
.section-head h2{margin-top:12px;}
.section-head p{margin-top:12px;color:var(--c-text-2);font-size:16px;max-width:660px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,248,244,.9);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.96);box-shadow:0 6px 24px rgba(27,24,48,.07);border-bottom-color:var(--c-line);}
.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px;min-height:78px;}
.nav-group{display:flex;align-items:center;gap:2px;}
.nav-group-left{justify-self:start;}
.nav-group-right{justify-self:end;}
.nav-link{position:relative;padding:9px 12px;font-size:15px;font-weight:500;color:var(--c-text-2);border-radius:10px;white-space:nowrap;}
.nav-link::after{content:"";position:absolute;left:22%;right:22%;bottom:3px;height:2px;border-radius:2px;background:var(--grad-brand);opacity:0;transform:scaleX(.35);transition:opacity .2s var(--ease),transform .2s var(--ease);}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after,.nav-link.active::after{opacity:1;transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);font-weight:700;}
.nav-link:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;font-size:19px;font-weight:800;letter-spacing:-.4px;color:var(--c-text);}
.brand:hover{color:var(--c-text);}
.brand-mark{width:36px;height:36px;border-radius:12px;background:var(--grad-brand);display:grid;place-items:center;box-shadow:0 8px 18px rgba(122,77,255,.28);flex:0 0 auto;}
.brand-text{white-space:nowrap;}
.brand:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:8px;}
.nav-toggle{
  display:none;justify-self:start;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line-strong);
  background:#fff;cursor:pointer;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary);}
.nav-toggle:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.nav-toggle-lines{display:block;width:18px;position:relative;}
.nav-toggle-lines i{display:block;height:2px;border-radius:2px;background:var(--c-text);margin:4px 0;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines i:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-panel{
  display:none;overflow:hidden;max-height:0;opacity:0;
  transition:max-height .28s var(--ease),opacity .22s var(--ease);
}
.mobile-panel.is-open{max-height:520px;opacity:1;}
.mobile-panel .panel-inner{
  background:#fff;border:1px solid var(--c-line);border-radius:20px;
  box-shadow:var(--sh-2);padding:18px;margin:0 0 18px;
}
.mobile-panel h4{font-size:12px;letter-spacing:1.4px;color:var(--c-text-3);font-weight:700;margin:6px 0 10px;padding-left:4px;}
.mobile-panel .panel-link{display:block;padding:12px 14px;border-radius:12px;font-size:15px;font-weight:600;color:var(--c-text);}
.mobile-panel .panel-link:hover{background:#F5F0FF;color:var(--c-primary);}
.mobile-panel .panel-link.active{background:#F3EEFF;color:var(--c-primary-deep);}
.mobile-panel .btn{width:100%;margin-top:14px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;padding:14px 28px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.2;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 10px 24px rgba(122,77,255,.26);}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 34px rgba(122,77,255,.32);}
.btn-primary:active{transform:scale(.98);}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn-outline:hover{background:#F5F0FF;transform:translateY(-2px);}
.btn-outline:active{transform:scale(.98);}
.btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.45);color:#fff;}
.btn-ghost:hover{background:#fff;color:var(--c-primary-deep);}
.btn-ghost:active{transform:scale(.98);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn .arrow{transition:transform .2s var(--ease);}
.btn:hover .arrow{transform:translateX(3px);}

/* ---------- 面包屑 ---------- */
.crumb{padding:26px 0 0;}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-text-3);}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"›";color:var(--c-line-strong);}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .current{color:var(--c-text-2);font-weight:600;}

/* ---------- 页头 ---------- */
.page-hero{position:relative;margin-top:20px;border-radius:var(--r-lg);overflow:hidden;isolation:isolate;min-height:352px;display:flex;align-items:center;}
.page-hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;}
.page-hero::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(112deg,rgba(23,19,38,.94) 0%,rgba(90,49,214,.80) 54%,rgba(23,200,166,.55) 100%);}
.hero-inner{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr);gap:36px;align-items:center;padding:52px 56px;width:100%;}
.hero-label{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.32);color:#fff;font-size:13px;font-weight:600;letter-spacing:.5px;}
.hero-label::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c-secondary);box-shadow:0 0 0 4px rgba(23,200,166,.22);}
.page-hero h1{color:#fff;margin-top:18px;}
.page-hero .hero-sub{margin-top:14px;color:rgba(255,255,255,.82);font-size:16.5px;max-width:600px;}
.hero-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-end;}
.hero-actions .btn{width:100%;max-width:220px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-meta span{font-size:13px;color:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.26);border-radius:999px;padding:5px 13px;}

/* ---------- 数据徽章 ---------- */
.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}
.stat{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:16px;
  padding:20px 22px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.stat::before{
  content:"";position:absolute;inset:-1px;border-radius:17px;padding:1px;
  background:var(--grad-brand);pointer-events:none;opacity:.55;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.stat-num{font-family:"DIN Alternate","Barlow","HarmonyOS Sans SC",system-ui,sans-serif;font-size:30px;font-weight:800;letter-spacing:-.5px;color:var(--c-text);line-height:1.1;}
.stat-num small{font-size:14px;font-weight:700;color:var(--c-text-3);margin-left:4px;}
.stat-label{margin-top:6px;font-size:13.5px;color:var(--c-text-3);}

/* ---------- 公告卡片流 ---------- */
.notice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.notice-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:18px;
  padding:22px 24px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:10px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.notice-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-line-strong);}
.notice-card:hover h3{color:var(--c-primary);}
.notice-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.date-pill{
  display:inline-flex;align-items:center;gap:6px;background:#F3EEFF;color:var(--c-primary-deep);
  border-radius:999px;padding:4px 13px;font-size:13px;font-weight:700;
  font-family:"DIN Alternate","Barlow","HarmonyOS Sans SC",system-ui,sans-serif;
  font-variant-numeric:tabular-nums;letter-spacing:.2px;
}
.tag{display:inline-flex;align-items:center;border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:600;border:1px solid transparent;}
.tag-entry{background:#F3EEFF;color:var(--c-primary-deep);border-color:#E3D8FF;}
.tag-feature{background:#E7F9F4;color:#0E8E76;border-color:#CBF1E7;}
.tag-fix{background:#FFF0EA;color:#C4481F;border-color:#FFDCCF;}
.tag-opt{background:#EEF3FF;color:#3355B5;border-color:#DBE4FF;}
.notice-card h3{font-size:17px;transition:color .2s var(--ease);}
.notice-card p{font-size:14.5px;color:var(--c-text-2);line-height:1.8;}
.notice-foot{margin-top:auto;padding-top:12px;border-top:1px dashed var(--c-line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-text-3);}
.notice-foot .more{font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.notice-card:hover .more .arrow{transform:translateX(3px);}
.notice-foot .more .arrow{transition:transform .2s var(--ease);}

/* ---------- 类型说明 ---------- */
.type-wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:32px;align-items:start;}
.type-list li{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--c-line);
}
.type-list li:first-child{padding-top:0;}
.type-list .dot{width:12px;height:12px;border-radius:4px;background:var(--grad-brand);margin-top:9px;flex:0 0 auto;}
.type-list h3{font-size:17px;}
.type-list p{font-size:14.5px;color:var(--c-text-2);margin-top:6px;}
.panel-dark{
  background:linear-gradient(150deg,#221B3D 0%,var(--c-deep) 62%,#1B2E36 100%);
  border-radius:var(--r-card);padding:30px;color:#fff;box-shadow:var(--sh-2);
}
.panel-dark h3{font-size:18px;color:#fff;}
.panel-dark p{font-size:14.5px;color:rgba(255,255,255,.72);margin-top:10px;}
.panel-dark ul{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.panel-dark li{display:flex;justify-content:space-between;gap:14px;font-size:14.5px;color:rgba(255,255,255,.86);padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.1);}
.panel-dark li:last-child{border-bottom:0;padding-bottom:0;}
.panel-dark li span:last-child{color:var(--c-secondary);font-weight:700;font-variant-numeric:tabular-nums;}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.flow-step{background:#fff;border:1px solid var(--c-line);border-radius:18px;padding:24px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease);}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.flow-num{
  width:42px;height:42px;border-radius:13px;background:var(--grad-brand);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:16px;
  font-family:"DIN Alternate","Barlow",system-ui,sans-serif;
  box-shadow:0 10px 22px rgba(122,77,255,.24);
}
.flow-step h3{margin-top:18px;font-size:17px;}
.flow-step p{margin-top:8px;font-size:14.5px;color:var(--c-text-2);}
.flow-step .flow-time{margin-top:14px;font-size:12.5px;color:var(--c-text-3);letter-spacing:.4px;}

/* ---------- 深色确认带 ---------- */
.band-dark{
  background:linear-gradient(120deg,#1E1738 0%,#171326 48%,#143036 100%);
  border-radius:var(--r-lg);padding:52px;position:relative;overflow:hidden;
}
.band-dark::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,77,255,.42) 0%,rgba(122,77,255,0) 68%);
}
.band-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:40px;align-items:center;position:relative;z-index:1;}
.band-dark h2{color:#fff;}
.band-dark .band-sub{margin-top:14px;color:rgba(255,255,255,.74);font-size:15.5px;max-width:520px;}
.check-list{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;color:rgba(255,255,255,.86);font-size:15px;}
.check-list .ck{width:22px;height:22px;border-radius:7px;background:rgba(23,200,166,.18);border:1px solid rgba(23,200,166,.5);display:grid;place-items:center;flex:0 0 auto;margin-top:2px;}
.check-list .ck svg{width:12px;height:12px;}
.band-figure{border-radius:22px;overflow:hidden;border:1px solid rgba(255,255,255,.14);}
.band-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.62fr) minmax(0,1.38fr);gap:44px;align-items:start;}
.faq-aside{position:sticky;top:110px;}
.faq-aside .aside-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-1);margin-top:24px;}
.faq-aside .aside-card .badge-line{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;}
.badge-mini{display:inline-flex;align-items:center;gap:6px;background:#F3EEFF;color:var(--c-primary-deep);border-radius:999px;padding:5px 13px;font-size:12.5px;font-weight:700;}
.badge-mini.alt{background:#E7F9F4;color:#0E8E76;}
.faq-aside .aside-card p{font-size:14px;color:var(--c-text-2);}
.faq-aside .aside-card .btn{margin-top:18px;width:100%;}
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 46px 22px 0;font-size:17px;font-weight:600;color:var(--c-text);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";position:absolute;right:10px;top:50%;width:12px;height:12px;
  transform:translateY(-60%) rotate(45deg);
  border-right:2px solid var(--c-text-3);border-bottom:2px solid var(--c-text-3);
  transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.faq-item[open] summary{color:var(--c-primary);}
.faq-item[open] summary::after{transform:translateY(-20%) rotate(-135deg);border-color:var(--c-primary);}
.faq-item summary:hover{color:var(--c-primary);}
.faq-item summary:focus-visible{outline:2px solid var(--c-primary);outline-offset:3px;border-radius:8px;}
.faq-answer{margin:0 0 20px;padding:18px 24px;background:#F7F4FB;border-radius:14px;font-size:15px;line-height:1.85;color:var(--c-text-2);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:#fff;border-radius:var(--r-lg);box-shadow:var(--sh-2);
  padding:46px 52px;display:grid;grid-template-columns:minmax(0,1.3fr) auto;gap:32px;align-items:center;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);padding:1px;
  background:var(--grad-brand);opacity:.5;pointer-events:none;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
}
.cta-band h2{font-size:clamp(21px,2.4vw,28px);}
.cta-band p{margin-top:12px;color:var(--c-text-2);font-size:15px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-deep);color:rgba(255,255,255,.72);margin-top:96px;position:relative;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand);}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:64px 0 44px;}
.footer-brand .brand{color:#fff;font-size:18px;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:330px;}
.footer-col h4{font-size:15px;color:#fff;font-weight:700;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a,.footer-col .plain{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col a:hover{color:var(--c-secondary);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0 30px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .hero-inner{grid-template-columns:1fr;gap:26px;padding:44px 40px;}
  .hero-actions{flex-direction:row;align-items:center;}
  .hero-actions .btn{width:auto;}
  .type-wrap{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .band-grid{grid-template-columns:1fr;gap:28px;}
  .band-dark{padding:40px 34px;}
  .footer-main{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}
@media (max-width:1024px){
  .nav-group-left,.nav-group-right{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-panel{display:block;}
  .header-inner{min-height:66px;}
  .section{padding:72px 0;}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:820px){
  .notice-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .brand{font-size:16.5px;gap:8px;}
  .brand-mark{width:32px;height:32px;border-radius:10px;}
  .page-hero{min-height:auto;border-radius:22px;}
  .hero-inner{padding:34px 24px;gap:22px;}
  .page-hero h1{font-size:27px;}
  .page-hero .hero-sub{font-size:15px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{max-width:none;width:100%;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:28px;}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 34px;}
  .footer-brand{grid-column:1 / -1;}
  .cta-band{padding:30px 22px;}
  .band-figure img{aspect-ratio:16/10;}
  .flow{grid-template-columns:1fr;}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
  .stat{padding:16px;}
  .stat-num{font-size:24px;}
  .btn{min-height:44px;}
}
@media (max-width:520px){
  .crumb{padding-top:18px;}
  .page-hero h1{font-size:24px;letter-spacing:-.3px;}
  .notice-card{padding:18px 18px;}
  .faq-answer{padding:16px 18px;}
  .footer-main{grid-template-columns:1fr;}
  .hero-meta span{font-size:12px;padding:4px 10px;}
}