/* roulang page: index */
:root{
  --brand:#6C3BFF;
  --brand-2:#00CFB4;
  --accent:#FF6A4D;
  --ink:#14121C;
  --bg:#F7F6F3;
  --bg-2:#EFF0F4;
  --surface:#FFFFFF;
  --text:#16161C;
  --text-body:#4A4F5C;
  --text-muted:#868C99;
  --line:#E4E2EA;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --shadow-1:0 12px 28px -16px rgba(20,18,28,.16);
  --shadow-2:0 22px 44px -20px rgba(108,59,255,.35);
  --grad:linear-gradient(135deg,#6C3BFF 0%,#00CFB4 100%);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#6C3BFF;
  --bs-body-bg:#FFFFFF;
  --bs-body-color:#4A4F5C;
  --bs-border-radius:0.75rem;
  --bs-link-color:#6C3BFF;
  --bs-link-hover-color:#6C3BFF;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text-body);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand)}
h1,h2,h3,h4,h5{color:var(--text);margin:0;font-weight:700;letter-spacing:-0.01em}
h1{font-size:40px;line-height:1.2}
h2{font-size:30px;line-height:1.35}
h3{font-size:22px;line-height:1.45;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button,input{font-family:inherit}
:focus-visible{outline:3px solid rgba(108,59,255,.35);outline-offset:2px;border-radius:6px}
.container{max-width:1240px;padding-left:24px;padding-right:24px}
@media (min-width:1400px){.container{max-width:1320px}}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--ink);color:rgba(255,255,255,.88);font-size:13px;height:40px;display:flex;align-items:center}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;width:100%;gap:16px}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:14px;min-width:0}
.topbar-domain{font-weight:700;letter-spacing:.02em;color:#fff}
.topbar-note{color:rgba(255,255,255,.6);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-divider{width:1px;height:14px;background:rgba(255,255,255,.12);flex:none}
.topbar-link{color:rgba(255,255,255,.78);white-space:nowrap}
.topbar-link:hover{color:var(--brand-2)}
.topbar-badge{display:inline-flex;align-items:center;gap:6px;color:var(--brand-2);white-space:nowrap}
.topbar-badge i{font-size:11px}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:1030}
.main-nav{background:#fff;border-bottom:1px solid var(--line);padding:0;transition:padding .25s var(--ease),box-shadow .25s var(--ease)}
.main-nav .container{display:flex;align-items:center;gap:20px;min-height:72px;transition:min-height .25s var(--ease)}
.main-nav.is-scrolled{box-shadow:0 8px 24px -18px rgba(20,18,28,.4)}
.main-nav.is-scrolled .container{min-height:60px}
.brand-logo{display:inline-flex;align-items:center;gap:10px;padding:0;margin-right:8px}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
  letter-spacing:.02em;flex:none;box-shadow:0 8px 18px -10px rgba(108,59,255,.7)
}
.brand-text{font-size:18px;font-weight:800;color:var(--text);letter-spacing:-0.01em;white-space:nowrap}
.brand-suffix{color:var(--brand);margin-left:2px}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-list .nav-link{
  position:relative;color:var(--text-body);font-size:15px;font-weight:500;
  padding:24px 14px;display:inline-block;transition:color .2s var(--ease)
}
.nav-list .nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;border-radius:3px 3px 0 0;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)
}
.nav-list .nav-link:hover{color:var(--brand)}
.nav-list .nav-link:hover::after{transform:scaleX(1)}
.nav-list .nav-link.active{color:var(--brand);font-weight:600}
.nav-list .nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{border:1px solid var(--line);border-radius:12px;padding:9px 11px;background:#fff;display:flex;flex-direction:column;gap:4px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px}
.nav-toggle:focus{box-shadow:none}

/* ============ 按钮 ============ */
.btn-grad{
  background:var(--grad);background-size:150% 150%;color:#fff;border:none;
  border-radius:999px;padding:12px 26px;font-size:15px;font-weight:600;
  box-shadow:0 14px 28px -16px rgba(108,59,255,.85);transition:all .25s var(--ease)
}
.btn-grad:hover{background-position:100% 0;filter:brightness(1.04);color:#fff;transform:translateY(-1px)}
.btn-grad:active{transform:translateY(1px)}
.btn-outline-brand{
  border:1px solid var(--line);background:#fff;color:var(--text);
  border-radius:14px;padding:12px 22px;font-size:15px;font-weight:600;transition:all .25s var(--ease)
}
.btn-outline-brand:hover{border-color:transparent;color:var(--brand);box-shadow:inset 0 0 0 1.5px var(--brand)}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.28);color:#fff;border-radius:14px;padding:12px 22px;font-size:15px;font-weight:600;transition:all .25s var(--ease)}
.btn-ghost:hover{border-color:var(--brand-2);color:var(--brand-2)}
.btn-link-grad{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);position:relative
}
.btn-link-grad::after{content:"";position:absolute;left:0;right:22px;bottom:-4px;height:2px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)}
.btn-link-grad:hover::after{transform:scaleX(1)}

/* ============ HERO ============ */
.hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(20,18,28,.94) 0%,rgba(20,18,28,.82) 45%,rgba(108,59,255,.62) 100%);
}
.hero::after{
  content:"";position:absolute;width:640px;height:640px;right:-180px;top:-160px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,207,180,.22) 0%,rgba(0,207,180,0) 68%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:96px 0 88px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.02em;
  padding:7px 16px;border-radius:999px;color:#fff;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);margin-bottom:22px
}
.hero-tag i{color:var(--brand-2)}
.hero h1{color:#fff;font-size:44px;line-height:1.22;margin-bottom:20px}
.hero h1 .hl{
  background:linear-gradient(135deg,#8E6BFF 0%,#00CFB4 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.82);max-width:560px;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-trust{display:flex;flex-wrap:wrap;gap:22px}
.hero-trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.78)}
.hero-trust i{color:var(--brand-2)}
.hero-visual{position:relative;min-height:380px}
.hero-shot{
  position:relative;border-radius:24px;overflow:hidden;
  box-shadow:0 40px 80px -40px rgba(0,0,0,.9),0 0 0 1px rgba(255,255,255,.1);
  transform:rotate(-1.2deg)
}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-shot.small{
  position:absolute;right:-18px;bottom:-34px;width:62%;transform:rotate(2.4deg);
  border-radius:18px;box-shadow:0 30px 60px -30px rgba(0,0,0,.85),0 0 0 1px rgba(255,255,255,.12)
}
.hero-shot.small img{aspect-ratio:16/11}
.hero-float{
  position:absolute;left:-14px;top:26px;background:#fff;color:var(--text);
  border-radius:16px;padding:12px 16px;display:flex;align-items:center;gap:10px;
  box-shadow:0 20px 40px -22px rgba(0,0,0,.6);font-size:13px;font-weight:600;z-index:3
}
.hero-float i{width:32px;height:32px;border-radius:10px;background:rgba(108,59,255,.12);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-size:14px}
.hero-float span small{display:block;font-weight:500;color:var(--text-muted);font-size:12px}

/* ============ 数据徽章条 ============ */
.stats{background:var(--bg);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:44px 0}
.stat-item{display:flex;gap:14px;align-items:flex-start}
.stat-icon{
  width:44px;height:44px;border-radius:14px;flex:none;display:flex;align-items:center;justify-content:center;
  background:rgba(0,207,180,.12);color:#00A38F;font-size:17px;border:1px solid rgba(0,207,180,.25)
}
.stat-num{font-size:26px;font-weight:800;color:var(--text);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-num em{font-style:normal;font-size:15px;font-weight:700;color:var(--brand);margin-left:2px}
.stat-desc{font-size:14px;color:var(--text-muted);line-height:1.6;margin-top:4px}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-sm{padding:72px 0}
.bg-soft{background:var(--bg)}
.bg-cool{background:var(--bg-2)}
.sec-head{max-width:720px;margin-bottom:52px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand);
  letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px
}
.sec-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad)}
.sec-head h2{margin-bottom:16px}
.sec-head p{font-size:16px;line-height:1.85;color:var(--text-muted)}

/* ============ Bento 功能分组 ============ */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.bento-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px;box-shadow:var(--shadow-1);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
  overflow:hidden;display:flex;flex-direction:column
}
.bento-card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:var(--grad);opacity:0;transition:opacity .25s var(--ease);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none
}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.bento-card:hover::before{opacity:1}
.bento-icon{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(108,59,255,.12);color:var(--brand);font-size:19px;margin-bottom:20px
}
.bento-card h3{font-size:22px;margin-bottom:12px}
.bento-card p{font-size:15px;line-height:1.8;color:var(--text-body)}
.bento-card .btn-link-grad{margin-top:20px}
.bento-a{grid-column:span 4;display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.bento-a .bento-body{order:1}
.bento-a .bento-media{order:2;border-radius:18px;overflow:hidden}
.bento-a .bento-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .35s var(--ease)}
.bento-a:hover .bento-media img{transform:scale(1.03)}
.bento-b{grid-column:span 2}
.bento-c{grid-column:span 2}
.bento-d{grid-column:span 2}
.bento-e{grid-column:span 2}
.bento-f{grid-column:span 2}
.bento-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{
  font-size:13px;padding:5px 12px;border-radius:999px;background:var(--bg-2);color:var(--text-body);
  border:1px solid var(--line);white-space:nowrap
}
.chip.grad{background:rgba(108,59,255,.1);color:var(--brand);border-color:rgba(108,59,255,.2)}

/* ============ 使用场景 ============ */
.scene{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;padding:44px 0}
.scene + .scene{border-top:1px dashed var(--line)}
.scene.reverse .scene-media{order:2}
.scene.reverse .scene-body{order:1}
.scene-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1)}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .35s var(--ease)}
.scene-media:hover img{transform:scale(1.03)}
.scene-index{
  position:absolute;left:20px;bottom:8px;font-size:66px;font-weight:800;color:rgba(255,255,255,.9);
  line-height:1;font-variant-numeric:tabular-nums;text-shadow:0 12px 30px rgba(20,18,28,.4)
}
.scene-body h3{font-size:26px;margin-bottom:16px}
.scene-body p{font-size:16px;line-height:1.9;color:var(--text-body);margin-bottom:20px}
.scene-list{display:grid;gap:12px}
.scene-list li{display:flex;gap:10px;font-size:15px;color:var(--text-body);line-height:1.75}
.scene-list i{color:#00A38F;margin-top:5px;flex:none}

/* ============ 深色案例区 ============ */
.dark-block{
  position:relative;background:var(--ink);color:rgba(255,255,255,.88);overflow:hidden
}
.dark-block::before{
  content:"";position:absolute;width:720px;height:720px;left:-220px;bottom:-320px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,59,255,.28) 0%,rgba(108,59,255,0) 70%)
}
.dark-block::after{
  content:"";position:absolute;width:520px;height:520px;right:-160px;top:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,207,180,.2) 0%,rgba(0,207,180,0) 70%)
}
.dark-block .container{position:relative;z-index:2}
.dark-block .sec-eyebrow{color:var(--brand-2)}
.dark-block .sec-head h2{color:#fff}
.dark-block .sec-head p{color:rgba(255,255,255,.66)}
.case-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:28px;align-items:start}
.case-main{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);
  padding:36px;box-shadow:0 0 0 1px rgba(255,255,255,.04),inset 0 1px 0 rgba(255,255,255,.06)
}
.case-main .quote-mark{font-size:36px;color:var(--brand-2);line-height:1;margin-bottom:16px}
.case-main blockquote{margin:0 0 24px;font-size:19px;line-height:1.8;color:#fff;font-weight:500}
.case-metrics{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}
.metric-badge{
  border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.06);
  border-radius:999px;padding:8px 16px;font-size:13px;color:rgba(255,255,255,.9);display:inline-flex;gap:8px;align-items:center
}
.metric-badge b{font-variant-numeric:tabular-nums;font-weight:800;color:var(--brand-2)}
.case-tags{display:flex;flex-wrap:wrap;gap:8px}
.case-tags .chip{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.14);color:rgba(255,255,255,.8)}
.case-list{display:grid;gap:0}
.case-row{
  padding:22px 0;border-bottom:1px solid rgba(255,255,255,.12);display:grid;gap:8px;transition:padding-left .25s var(--ease)
}
.case-row:first-child{padding-top:0}
.case-row:hover{padding-left:6px}
.case-row h4{font-size:17px;color:#fff;font-weight:600}
.case-row p{font-size:14px;line-height:1.7;color:rgba(255,255,255,.6)}
.case-row .case-meta{font-size:13px;color:var(--brand-2);display:inline-flex;align-items:center;gap:6px}

/* ============ 价格档位 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch;margin-top:16px}
.plan-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 30px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease)
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.plan-card.featured{
  transform:translateY(-16px);border-color:transparent;box-shadow:0 30px 60px -32px rgba(108,59,255,.7)
}
.plan-card.featured::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:2px;
  background:var(--grad);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none
}
.plan-card.featured:hover{transform:translateY(-20px)}
.plan-badge{
  position:absolute;top:-13px;left:30px;background:var(--accent);color:#fff;font-size:13px;font-weight:700;
  padding:5px 14px;border-radius:999px;box-shadow:0 10px 22px -12px rgba(255,106,77,.95)
}
.plan-name{font-size:18px;font-weight:700;color:var(--text);margin-bottom:6px}
.plan-note{font-size:14px;color:var(--text-muted);margin-bottom:22px}
.plan-price{display:flex;align-items:baseline;gap:6px;margin-bottom:24px}
.plan-price .num{font-size:38px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums;line-height:1}
.plan-price .unit{font-size:14px;color:var(--text-muted)}
.plan-features{display:grid;gap:12px;margin-bottom:28px}
.plan-features li{display:flex;gap:10px;font-size:15px;color:var(--text-body);line-height:1.7}
.plan-features i{color:#00A38F;margin-top:5px;flex:none}
.plan-card .btn-grad,.plan-card .btn-outline-brand{margin-top:auto;width:100%;text-align:center}
.plan-foot{margin-top:28px;font-size:14px;color:var(--text-muted);text-align:center}
.plan-foot a{font-weight:600}

/* ============ 资讯列表 ============ */
.list-head{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between;margin-bottom:44px}
.list-head .sec-head{margin-bottom:0}
.post-lead{
  display:grid;grid-template-columns:1.05fr 1fr;gap:0;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);margin-bottom:28px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease)
}
.post-lead:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.post-lead .lead-media{overflow:hidden;min-height:280px;background:var(--grad)}
.post-lead .lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.post-lead:hover .lead-media img{transform:scale(1.03)}
.post-lead .lead-body{padding:38px 36px;display:flex;flex-direction:column;gap:14px;justify-content:center}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease)
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--grad);position:relative}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-title{
  font-size:17px;font-weight:600;color:var(--text);line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden
}
.post-card:hover .post-title{color:var(--brand)}
.post-excerpt{
  font-size:14px;line-height:1.75;color:var(--text-muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden
}
.post-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-muted);margin-top:auto;padding-top:8px}
.post-cat{font-size:13px;padding:4px 12px;border-radius:999px;background:rgba(108,59,255,.1);color:var(--brand);border:1px solid rgba(108,59,255,.18)}
.empty-state{
  max-height:240px;background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-md);
  padding:48px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px
}
.empty-state i{font-size:30px;color:var(--brand);opacity:.7}
.empty-state p{font-size:15px;color:var(--text-muted)}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-md) !important;margin-bottom:12px;overflow:hidden;
  background:var(--surface);box-shadow:none
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--text);background:var(--surface);padding:20px 24px;border:none;
  box-shadow:none !important;position:relative
}
.accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--brand);transition:transform .25s var(--ease);
  width:auto;height:auto;display:flex;align-items:center
}
.accordion-button:not(.collapsed){color:var(--brand);background:var(--bg)}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg)}
.accordion-button:focus{border-color:transparent;box-shadow:none}
.accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid transparent;border-image:var(--grad) 1}
.accordion-body{padding:4px 24px 24px;font-size:15px;line-height:1.9;color:var(--text-body);background:var(--bg)}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;color:#fff;
  background-image:url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(20,18,28,.93) 0%,rgba(108,59,255,.82) 55%,rgba(0,207,180,.75) 100%)}
.cta-inner{position:relative;z-index:2;text-align:center;padding:88px 0}
.cta-inner h2{color:#fff;font-size:34px;margin-bottom:16px}
.cta-inner p{font-size:16px;color:rgba(255,255,255,.82);max-width:640px;margin:0 auto 32px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.cta-points{display:flex;flex-wrap:wrap;gap:26px;justify-content:center;margin-top:34px}
.cta-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.8)}
.cta-points i{color:var(--brand-2)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);position:relative;padding-top:3px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding:72px 0 48px}
.footer-brand .brand-logo{margin-bottom:18px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-bottom:20px;max-width:320px}
.footer-social{display:flex;gap:10px}
.footer-social a{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.07);color:rgba(255,255,255,.8);border:1px solid rgba(255,255,255,.1);
  transition:all .25s var(--ease)
}
.footer-social a:hover{background:var(--grad);color:#fff;border-color:transparent}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:20px;font-weight:700}
.footer-col ul{display:grid;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);display:inline-block;transition:all .2s var(--ease)}
.footer-col a:hover{color:var(--brand-2);transform:translateX(2px)}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.66);line-height:1.7}
.footer-contact i{color:var(--brand-2);margin-top:5px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;align-items:center;font-size:13px;color:rgba(255,255,255,.5)
}
.footer-bottom a{color:rgba(255,255,255,.5)}
.footer-bottom a:hover{color:var(--brand-2)}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero h1{font-size:38px}
  .hero-inner{gap:40px}
  .bento-a{grid-column:span 6}
  .bento-b,.bento-c,.bento-d,.bento-e,.bento-f{grid-column:span 3}
  .scene{gap:40px}
}
@media (max-width:991.98px){
  .topbar{height:auto;padding:8px 0}
  .topbar-inner{flex-wrap:wrap;row-gap:4px}
  .topbar-note,.topbar-right .topbar-link{display:none}
  .main-nav .container{min-height:64px;flex-wrap:wrap}
  .navbar-collapse{
    flex-basis:100%;background:#fff;border-top:1px solid var(--line);margin:0 -24px;padding:8px 24px 20px
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list .nav-link{padding:14px 0;min-height:48px;border-bottom:1px solid var(--line)}
  .nav-list .nav-link::after{display:none}
  .nav-actions{flex-direction:column;align-items:stretch;width:100%;margin-top:16px}
  .nav-actions .btn-grad,.nav-actions .btn-outline-brand{width:100%;text-align:center}
  .hero-inner{grid-template-columns:1fr;padding:72px 0 64px}
  .hero-sub{max-width:100%}
  .hero-visual{min-height:auto;margin-top:8px}
  .hero-shot.small{position:relative;right:auto;bottom:auto;width:100%;margin-top:16px;transform:none}
  .hero-float{left:12px;top:12px}
  .section{padding:72px 0}
  .section-sm{padding:56px 0}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px;padding:36px 0}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-a{grid-column:span 2;grid-template-columns:1fr}
  .bento-a .bento-media{order:1}
  .bento-a .bento-body{order:2}
  .bento-b,.bento-c,.bento-d,.bento-e,.bento-f{grid-column:span 1}
  .scene{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .scene.reverse .scene-media{order:1}
  .scene.reverse .scene-body{order:2}
  .case-grid{grid-template-columns:1fr}
  .plan-grid{grid-template-columns:1fr;gap:20px}
  .plan-card.featured{transform:none}
  .plan-card.featured:hover{transform:translateY(-4px)}
  .post-lead{grid-template-columns:1fr}
  .post-lead .lead-media{min-height:220px}
  .post-lead .lead-body{padding:28px 24px}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;padding:56px 0 36px}
  .cta-inner h2{font-size:28px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .navbar-collapse{margin:0 -16px;padding:8px 16px 20px}
  h1{font-size:28px;line-height:1.3}
  .hero h1{font-size:28px;line-height:1.32}
  .hero-sub{font-size:15px}
  .hero-cta .btn-grad,.hero-cta .btn-ghost{width:100%;text-align:center}
  .hero-trust{gap:12px;flex-direction:column}
  .hero-float{position:relative;left:auto;top:auto;margin-bottom:14px}
  h2,.sec-head h2{font-size:24px}
  .section{padding:56px 0}
  .section-sm{padding:44px 0}
  .stats-grid{grid-template-columns:1fr;gap:22px}
  .bento{grid-template-columns:1fr}
  .bento-a{grid-column:span 1}
  .bento-card{padding:24px}
  .scene-body h3{font-size:22px}
  .scene-index{font-size:48px;left:14px;bottom:4px}
  .case-main{padding:26px}
  .case-main blockquote{font-size:17px}
  .post-grid{grid-template-columns:1fr}
  .plan-card{padding:26px 22px}
  .plan-price .num{font-size:32px}
  .cta-inner{padding:64px 0}
  .cta-inner h2{font-size:24px}
  .cta-points{gap:14px;flex-direction:column;align-items:center}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:44px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;text-align:left}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --brand:#6C3BFF;
  --brand-2:#00CFB4;
  --accent:#FF6A4D;
  --ink:#14121C;
  --ink-soft:#1D1A28;
  --surface:#F7F6F3;
  --surface-2:#EFF0F4;
  --white:#FFFFFF;
  --head:#16161C;
  --text:#4A4F5C;
  --muted:#868C99;
  --line:#E4E2EA;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
  --radius-btn:14px;
  --shadow-1:0 12px 28px -16px rgba(20,18,28,.16);
  --shadow-2:0 22px 44px -20px rgba(108,59,255,.35);
  --grad:linear-gradient(135deg,#6C3BFF 0%,#00CFB4 100%);
  --ring:0 0 0 3px rgba(108,59,255,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#6C3BFF;
  --bs-body-bg:#F7F6F3;
  --bs-body-color:#4A4F5C;
  --bs-border-radius:14px;
  --bs-link-color:#6C3BFF;
  --bs-link-hover-color:#4d21e0;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--surface);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:#4d21e0;}
h1,h2,h3,h4{color:var(--head);font-weight:700;margin:0;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul,ol{padding-left:1.15em;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:var(--ring);border-radius:8px;}
.container{width:100%;max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1320px;}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink);color:rgba(255,255,255,.72);font-size:13px;line-height:40px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px;}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em;}
.topbar-divider{width:1px;height:14px;background:rgba(255,255,255,.12);display:inline-block;}
.topbar-note{color:rgba(255,255,255,.66);}
.topbar-link{color:rgba(255,255,255,.78);font-size:13px;}
.topbar-link:hover{color:var(--brand-2);}
.topbar-badge{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:999px;background:rgba(0,207,180,.14);color:var(--brand-2);font-size:12px;}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;}
.main-nav{
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  min-height:72px;
  padding:0;
  transition:min-height .25s var(--ease),box-shadow .25s var(--ease);
}
.main-nav.is-stuck{min-height:60px;box-shadow:var(--shadow-1);}
.main-nav .container{display:flex;align-items:center;min-height:inherit;gap:16px;}
.brand-logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none !important;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);
  color:#fff;font-weight:800;font-size:15px;display:inline-flex;align-items:center;justify-content:center;
  letter-spacing:.02em;box-shadow:0 8px 18px -10px rgba(108,59,255,.7);
}
.brand-text{font-size:18px;font-weight:700;color:var(--head);letter-spacing:-.01em;}
.brand-suffix{color:var(--brand);margin-left:2px;}
.nav-list{gap:6px;}
.nav-link{
  position:relative;color:#3A3F4C;font-size:15px;font-weight:500;padding:10px 14px !important;border-radius:10px;
}
.nav-link:hover{color:var(--brand);background:rgba(108,59,255,.06);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:3px;border-radius:3px;background:var(--grad);
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{border:1px solid var(--line);border-radius:12px;padding:8px 10px;background:#fff;}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;margin:4px 0;}
.nav-toggle:focus{box-shadow:var(--ring);}
.btn-grad{
  background:linear-gradient(135deg,#6C3BFF 0%,#00CFB4 100%);
  color:#fff !important;font-weight:600;font-size:14px;padding:10px 20px;border:none;
  border-radius:999px;box-shadow:0 10px 24px -14px rgba(108,59,255,.85);transition:all .25s var(--ease);
}
.btn-grad:hover{filter:brightness(1.05);box-shadow:var(--shadow-2);transform:translateY(-1px);}
.btn-grad:active{transform:translateY(1px);}
.btn-outline-brand{
  border:1px solid var(--line);color:var(--ink) !important;background:#fff;font-weight:600;font-size:14px;
  padding:9px 18px;border-radius:999px;transition:all .25s var(--ease);
}
.btn-outline-brand:hover{border-color:rgba(108,59,255,.55);color:var(--brand) !important;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--white);border-bottom:1px solid var(--line);padding:12px 0;}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--muted);}
.crumbs a{color:var(--muted);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:#C9C7D2;}
.crumbs .current{color:var(--brand);font-weight:600;}

/* ---------- 文章头区 ---------- */
.article-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:linear-gradient(135deg,rgba(20,18,28,.92) 0%,rgba(108,59,255,.72) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.article-hero::after{
  content:"";position:absolute;inset:0;background:radial-gradient(circle at 82% 18%,rgba(0,207,180,.22),transparent 60%);pointer-events:none;
}
.article-hero .container{position:relative;z-index:2;padding-top:64px;padding-bottom:64px;}
.article-hero h1{
  color:#fff;font-size:40px;line-height:1.24;font-weight:700;letter-spacing:-.01em;max-width:900px;margin-bottom:20px;
}
.hero-lead{color:rgba(255,255,255,.8);font-size:16px;max-width:820px;margin-bottom:24px;}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:14px;}
.meta-pill{
  display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:13px;
}
.meta-item{display:inline-flex;align-items:center;gap:6px;color:rgba(255,255,255,.78);}
.meta-item i{color:var(--brand-2);}
.hero-cover{
  margin-top:36px;border-radius:var(--radius-md);overflow:hidden;border:1px solid rgba(255,255,255,.16);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.6);
}
.hero-cover img{width:100%;aspect-ratio:16/7;object-fit:cover;}

/* ---------- 正文布局 ---------- */
.article-section{padding:72px 0 88px;background:var(--surface);}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start;}
.article-panel{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:40px 44px;box-shadow:var(--shadow-1);scroll-margin-top:96px;
}
.article-empty{
  text-align:center;padding:56px 24px;color:var(--muted);
}
.article-empty i{font-size:34px;color:#C9C7D2;display:block;margin-bottom:14px;}
.article-empty h2{font-size:22px;margin-bottom:10px;}
.article-empty .btn-outline-brand{margin-top:16px;display:inline-block;}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:#3E4350;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  font-size:26px;line-height:1.45;margin:40px 0 16px;padding-left:14px;position:relative;scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:3px;background:var(--grad);
}
.article-body h3{font-size:20px;margin:28px 0 12px;scroll-margin-top:96px;}
.article-body h4{font-size:17px;margin:22px 0 10px;}
.article-body p{margin:0 0 1em;}
.article-body ul,.article-body ol{margin:0 0 1.15em;padding-left:1.3em;}
.article-body li{margin-bottom:.5em;line-height:1.8;}
.article-body li::marker{color:var(--brand);}
.article-body strong{color:var(--head);font-weight:700;}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(108,59,255,.3);}
.article-body a:hover{color:#4d21e0;border-bottom-color:#4d21e0;}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--surface);border-left:4px solid var(--brand-2);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#3E4350;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:22px auto;}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;display:block;overflow-x:auto;white-space:nowrap;
}
.article-body thead th{background:var(--ink);color:#fff;font-weight:600;text-align:left;padding:12px 16px;}
.article-body tbody td{padding:12px 16px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:#FAFAF9;}
.article-body pre{
  background:var(--ink);color:#EDEBF5;padding:18px 20px;border-radius:12px;overflow-x:auto;font-size:13px;line-height:1.7;margin:22px 0;
}
.article-body code{font-family:ui-monospace,Menlo,Consolas,monospace;}
.article-body p code,.article-body li code{background:var(--surface-2);color:#5A2BEF;padding:2px 6px;border-radius:6px;font-size:14px;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

/* ---------- 分享条 ---------- */
.share-bar{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--line);
}
.share-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  background:rgba(108,59,255,.08);color:#5A2BEF;font-size:13px;font-weight:500;
}
.share-actions{display:flex;align-items:center;gap:10px;}
.share-actions span{font-size:13px;color:var(--muted);}
.icon-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:#fff;color:#4A4F5C;
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;transition:all .25s var(--ease);
}
.icon-btn:hover{background:var(--grad);color:#fff;border-color:transparent;box-shadow:var(--shadow-2);transform:translateY(-2px);}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:22px 24px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:16px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand);}
.side-list{list-style:none;padding:0;margin:0;}
.side-list li{margin-bottom:10px;}
.side-list li:last-child{margin-bottom:0;}
.side-list a{font-size:14px;color:#454A57;display:flex;align-items:center;gap:8px;}
.side-list a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-2);flex:0 0 auto;}
.side-list a:hover{color:var(--brand);transform:translateX(2px);}
.side-info{list-style:none;padding:0;margin:0;font-size:14px;}
.side-info li{display:flex;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line);}
.side-info li:last-child{border-bottom:none;}
.side-info span:first-child{color:var(--muted);}
.side-info span:last-child{color:var(--head);font-weight:600;text-align:right;}
.side-cta{
  background:linear-gradient(135deg,rgba(108,59,255,.08),rgba(0,207,180,.12));
  border:1px solid rgba(108,59,255,.18);
}
.side-cta p{font-size:14px;color:#454A57;margin-bottom:14px;}
.side-cta .btn-grad{width:100%;text-align:center;display:block;}

/* ---------- 相关推荐 ---------- */
.related-section{background:var(--surface-2);padding:72px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{font-size:30px;line-height:1.4;margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:15px;margin:0;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;
  display:flex;flex-direction:column;transition:all .25s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(108,59,255,.35);}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .25s var(--ease);}
.related-card:hover img{transform:scale(1.03);}
.related-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-body h3{font-size:18px;line-height:1.5;}
.related-body p{font-size:14px;color:var(--muted);margin:0;flex:1;}
.related-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;color:var(--brand);}
.related-link i{transition:transform .25s var(--ease);}
.related-card:hover .related-link i{transform:translateX(4px);}

/* ---------- 返回分类 ---------- */
.back-row{display:flex;justify-content:center;padding:40px 0 0;}
.btn-line{
  display:inline-flex;align-items:center;gap:8px;padding:11px 24px;border-radius:999px;
  border:1px solid rgba(108,59,255,.5);color:var(--brand) !important;font-weight:600;font-size:14px;background:#fff;
  transition:all .25s var(--ease);
}
.btn-line:hover{background:rgba(108,59,255,.08);transform:translateY(-1px);}

/* ---------- 底部 CTA ---------- */
.cta-band{padding:0 0 88px;background:var(--surface-2);}
.cta-inner{
  background:linear-gradient(135deg,#6C3BFF 0%,#00CFB4 100%);
  border-radius:var(--radius-lg);padding:52px 48px;color:#fff;display:flex;align-items:center;
  justify-content:space-between;gap:32px;flex-wrap:wrap;box-shadow:0 30px 60px -30px rgba(108,59,255,.6);
}
.cta-inner h2{color:#fff;font-size:28px;line-height:1.4;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.86);margin:0;font-size:15px;max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
.btn-white{
  background:#fff;color:var(--brand) !important;font-weight:700;font-size:15px;padding:13px 28px;
  border-radius:999px;border:none;transition:all .25s var(--ease);
}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 18px 34px -18px rgba(0,0,0,.5);}
.btn-ghost{
  border:1px solid rgba(255,255,255,.6);color:#fff !important;font-weight:600;font-size:15px;
  padding:12px 26px;border-radius:999px;background:transparent;transition:all .25s var(--ease);
}
.btn-ghost:hover{background:rgba(255,255,255,.16);}

/* ---------- FAQ（文章尾部简版） ---------- */
.faq-wrap{background:var(--surface);padding:0 0 80px;}
.faq-wrap .section-head{margin-bottom:24px;}
.accordion-item{
  border:1px solid var(--line) !important;border-radius:var(--radius-sm) !important;
  margin-bottom:12px;overflow:hidden;background:#fff;
}
.accordion-button{
  font-size:16px;font-weight:600;color:var(--head);background:#fff;padding:18px 22px;box-shadow:none !important;
}
.accordion-button:not(.collapsed){color:var(--brand);background:var(--surface);box-shadow:inset 3px 0 0 0 var(--brand) !important;}
.accordion-button::after{transition:transform .25s var(--ease);}
.accordion-button:not(.collapsed)::after{transform:rotate(90deg);}
.accordion-body{font-size:15px;line-height:1.8;color:var(--text);padding:0 22px 20px;background:var(--surface);}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 28px;margin-top:0;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);margin:16px 0 20px;max-width:340px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:38px;height:38px;border-radius:12px;background:rgba(255,255,255,.08);color:rgba(255,255,255,.85);
  display:inline-flex;align-items:center;justify-content:center;transition:all .25s var(--ease);
}
.footer-social a:hover{background:var(--grad);color:#fff;transform:translateY(-2px);}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:11px;}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;display:inline-block;transition:all .25s var(--ease);}
.footer-col a:hover{color:var(--brand-2);transform:translateX(2px);}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(255,255,255,.7);line-height:1.7;}
.footer-contact i{color:var(--brand-2);margin-top:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:22px;display:flex;justify-content:space-between;
  gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 270px;gap:28px;}
  .related-grid{gap:20px;}
}
@media (max-width:991.98px){
  .nav-list{margin:14px 0 !important;}
  .navbar-collapse{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);margin-top:10px;padding:12px 16px 18px;
    box-shadow:var(--shadow-1);
  }
  .nav-link{padding:13px 10px !important;font-size:15px;}
  .nav-link.active::after{left:10px;right:auto;width:26px;}
  .nav-actions{flex-direction:column;align-items:stretch;}
  .nav-actions .btn-grad,.nav-actions .btn-outline-brand{text-align:center;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-side{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{padding:40px 32px;}
}
@media (max-width:767.98px){
  .topbar-right .topbar-link,.topbar-right .topbar-divider{display:none;}
  .article-hero .container{padding-top:44px;padding-bottom:44px;}
  .article-hero h1{font-size:30px;}
  .article-panel{padding:26px 20px;border-radius:var(--radius-md);}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:22px;margin-top:32px;}
  .article-body h3{font-size:18px;}
  .article-section{padding:52px 0 64px;}
  .section-head h2{font-size:24px;}
  .cta-inner{padding:32px 22px;}
  .cta-inner h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .brand-text{font-size:16px;}
  .article-hero h1{font-size:26px;line-height:1.32;}
  .article-meta{gap:8px;font-size:13px;}
  .share-bar{flex-direction:column;align-items:flex-start;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --brand:#6C3BFF;
  --brand-rgb:108,59,255;
  --brand-2:#00CFB4;
  --brand-2-rgb:0,207,180;
  --accent:#FF6A4D;
  --ink:#14121C;
  --page:#F7F6F3;
  --card:#FFFFFF;
  --panel:#EFF0F4;
  --t-strong:#16161C;
  --t-body:#4A4F5C;
  --t-mute:#868C99;
  --line:#E4E2EA;
  --grad:linear-gradient(135deg,#6C3BFF 0%,#00CFB4 100%);
  --grad-soft:linear-gradient(135deg,rgba(108,59,255,.12) 0%,rgba(0,207,180,.12) 100%);
  --shadow-sm:0 12px 28px -16px rgba(20,18,28,.16);
  --shadow-hover:0 22px 44px -20px rgba(108,59,255,.35);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#6C3BFF;
  --bs-primary-rgb:108,59,255;
  --bs-body-bg:#F7F6F3;
  --bs-body-color:#4A4F5C;
  --bs-border-radius:14px;
  --bs-link-color:#6C3BFF;
  --bs-link-hover-color:#00CFB4;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.75;
  color:var(--t-body);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-2)}
h1,h2,h3,h4,h5{color:var(--t-strong);margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:3px solid rgba(108,59,255,.35);outline-offset:2px;border-radius:8px}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-panel{background:var(--panel)}
[id]{scroll-margin-top:110px}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  font-size:13px;
  height:40px;
  display:flex;
  align-items:center;
  transition:height .28s var(--ease),opacity .28s var(--ease);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:14px;white-space:nowrap}
.topbar-domain{color:#fff;font-weight:700;letter-spacing:.02em}
.topbar-note{color:rgba(255,255,255,.66)}
.topbar-divider{width:1px;height:14px;background:rgba(255,255,255,.14);display:inline-block}
.topbar-link{color:rgba(255,255,255,.74);font-size:13px}
.topbar-link:hover{color:var(--brand-2)}
.topbar-badge{display:inline-flex;align-items:center;gap:6px;color:var(--brand-2);font-weight:600}
.topbar-badge i{font-size:12px}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:1030}
.main-nav{
  background:#fff;
  min-height:72px;
  padding:0;
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 0 rgba(20,18,28,.02);
  transition:min-height .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled .topbar{height:0;opacity:0;overflow:hidden}
.site-header.is-scrolled .main-nav{min-height:60px;box-shadow:0 10px 30px -18px rgba(20,18,28,.28)}
.main-nav .container{display:flex;align-items:center;gap:18px}
.navbar-brand.brand-logo{display:flex;align-items:center;gap:10px;padding:0;margin:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad);color:#fff;
  display:grid;place-items:center;
  font-size:14px;font-weight:800;letter-spacing:.06em;
  box-shadow:0 10px 22px -12px rgba(108,59,255,.7);
}
.brand-text{font-size:18px;font-weight:800;color:var(--t-strong);letter-spacing:-.01em;line-height:1}
.brand-suffix{color:var(--brand);margin-left:2px}
.nav-list{gap:4px}
.nav-list .nav-link{
  color:var(--t-body);
  font-size:15px;
  font-weight:600;
  padding:10px 14px;
  position:relative;
  transition:color .22s var(--ease);
}
.nav-list .nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;border-radius:3px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav-list .nav-link:hover{color:var(--brand)}
.nav-list .nav-link.active{color:var(--brand)}
.nav-list .nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}
.btn{border-radius:999px;font-weight:600;font-size:15px;padding:10px 20px;border:1px solid transparent;transition:all .25s var(--ease)}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 12px 26px -16px rgba(108,59,255,.9)}
.btn-grad:hover{color:#fff;filter:brightness(1.06);box-shadow:var(--shadow-hover);transform:translateY(-1px)}
.btn-grad:active{transform:translateY(1px)}
.btn-outline-brand{background:#fff;border-color:var(--line);color:var(--t-strong)}
.btn-outline-brand:hover{border-color:rgba(108,59,255,.55);color:var(--brand);background:#fff;transform:translateY(-1px)}
.btn-light-soft{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.3);color:#fff}
.btn-light-soft:hover{background:rgba(255,255,255,.22);color:#fff}
.btn-white{background:#fff;color:var(--brand);border:0}
.btn-white:hover{color:var(--brand);filter:brightness(.97);transform:translateY(-1px)}
.nav-toggle{border:1px solid var(--line);border-radius:12px;padding:9px 10px;width:44px;height:40px;display:flex;flex-direction:column;justify-content:center;gap:4px}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--t-strong);transition:all .25s var(--ease)}
.nav-toggle span:nth-child(2){width:70%}
.nav-toggle:focus{box-shadow:none}

/* ============ 面包屑 ============ */
.crumb{font-size:14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.crumb a{display:inline-flex;align-items:center;gap:6px}
.crumb .sep{opacity:.5}
.crumb .current{font-weight:600}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  color:#fff;
  padding:52px 0 64px;
  background-image:linear-gradient(135deg,rgba(20,18,28,.92) 0%,rgba(20,18,28,.78) 45%,rgba(108,59,255,.62) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,207,180,.28) 0%,rgba(0,207,180,0) 68%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero .crumb{color:rgba(255,255,255,.66);margin-bottom:26px}
.cat-hero .crumb a{color:rgba(255,255,255,.84)}
.cat-hero .crumb a:hover{color:var(--brand-2)}
.cat-hero .crumb .current{color:var(--brand-2)}
.cat-hero h1{color:#fff;font-size:40px;line-height:1.22;font-weight:800;letter-spacing:-.01em;max-width:860px}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);max-width:760px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.stat-chip{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 18px;border-radius:999px;font-size:14px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  color:rgba(255,255,255,.82);
  backdrop-filter:blur(6px);
}
.stat-chip i{color:var(--brand-2)}
.stat-chip b{color:#fff;font-weight:800;font-variant-numeric:tabular-nums}

/* ============ 主体布局 ============ */
.layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:44px;align-items:start}
.side-nav{
  position:sticky;top:100px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-sm);
}
.side-nav h2{font-size:15px;font-weight:700;letter-spacing:.01em;display:flex;align-items:center;gap:8px}
.side-nav h2 i{color:var(--brand)}
.side-nav .side-list{margin-top:14px;display:flex;flex-direction:column;gap:2px}
.side-nav .side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--t-body);
  transition:all .22s var(--ease);
}
.side-nav .side-list a i{font-size:11px;color:var(--t-mute);transition:transform .22s var(--ease)}
.side-nav .side-list a:hover{background:var(--page);color:var(--brand)}
.side-nav .side-list a:hover i{color:var(--brand);transform:translateX(2px)}
.side-note{
  margin-top:20px;padding:16px;border-radius:14px;background:var(--grad-soft);
  border:1px solid rgba(108,59,255,.14);
}
.side-note p{font-size:13.5px;line-height:1.7;color:var(--t-body)}
.side-note .btn{margin-top:12px;width:100%;font-size:14px;padding:9px 16px}

/* ============ 内容卡片 ============ */
.block{margin-bottom:40px}
.block-head{display:flex;align-items:baseline;gap:12px;margin-bottom:20px;flex-wrap:wrap}
.block-head h2{font-size:30px;line-height:1.3}
.block-head .eyebrow{
  font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand);
  text-transform:uppercase;
}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:start}
.col-stack{display:flex;flex-direction:column;gap:24px}
.col-stack.offset-up{margin-top:36px}
.card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);padding:28px;box-shadow:var(--shadow-sm);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:var(--grad);opacity:0;transition:opacity .25s var(--ease);
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.card:hover::before{opacity:1}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--grad-soft);border:1px solid rgba(108,59,255,.16);
  color:var(--brand);font-size:18px;margin-bottom:16px;
}
.card h3{font-size:22px;line-height:1.4;margin-bottom:10px}
.card p{font-size:15.5px;line-height:1.8;color:var(--t-body)}
.card-wide{
  grid-column:1 / -1;border-radius:var(--r-lg);padding:32px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:center;
}
.card-wide .card-media{border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;background:var(--grad)}
.card-wide .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card-wide:hover .card-media img{transform:scale(1.03)}
.mini-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.mini-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.7;color:var(--t-body)}
.mini-list li i{color:var(--brand-2);margin-top:5px;font-size:13px}
.step-list{counter-reset:step;margin-top:16px;display:flex;flex-direction:column;gap:14px}
.step-list li{position:relative;padding-left:38px;font-size:15px;line-height:1.75;color:var(--t-body)}
.step-list li::before{
  counter-increment:step;content:counter(step);
  position:absolute;left:0;top:1px;width:26px;height:26px;border-radius:9px;
  background:var(--grad-soft);border:1px solid rgba(108,59,255,.18);
  color:var(--brand);font-size:13px;font-weight:800;
  display:grid;place-items:center;font-variant-numeric:tabular-nums;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;line-height:20px;padding:4px 12px;border-radius:999px;
  background:var(--panel);color:var(--t-body);border:1px solid var(--line);
}
.tag.tag-brand{background:rgba(108,59,255,.1);border-color:rgba(108,59,255,.2);color:var(--brand);font-weight:600}
.tag.tag-mint{background:rgba(0,207,180,.12);border-color:rgba(0,207,180,.24);color:#0B8C7C;font-weight:600}

/* 现象-处理 行 */
.fix-list{margin-top:16px;display:flex;flex-direction:column}
.fix-list li{
  display:grid;grid-template-columns:120px 1fr;gap:16px;
  padding:14px 0;border-top:1px dashed var(--line);font-size:14.5px;line-height:1.7;
}
.fix-list li:first-child{border-top:0;padding-top:6px}
.fix-list .sym{font-weight:700;color:var(--t-strong)}

/* ============ 深色检查清单 ============ */
.check-band{
  background:var(--ink);color:rgba(255,255,255,.78);
  border-radius:28px;padding:52px;position:relative;overflow:hidden;
}
.check-band::after{
  content:"";position:absolute;left:-90px;bottom:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,59,255,.34) 0%,rgba(108,59,255,0) 70%);
}
.check-band .inner{position:relative;z-index:2}
.check-band h2{color:#fff;font-size:30px;line-height:1.35;margin-bottom:14px}
.check-band .lead{font-size:16px;line-height:1.85;color:rgba(255,255,255,.72);max-width:760px}
.check-grid{margin-top:34px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.check-item{
  border:1px solid rgba(255,255,255,.1);border-radius:var(--r-md);
  padding:22px;background:rgba(255,255,255,.03);
  transition:border-color .25s var(--ease),transform .25s var(--ease);
}
.check-item:hover{border-color:rgba(0,207,180,.45);transform:translateY(-3px)}
.check-item .no{
  font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--brand-2);
  font-variant-numeric:tabular-nums;
}
.check-item h3{color:#fff;font-size:17px;font-weight:600;margin:8px 0 8px}
.check-item p{font-size:14.5px;line-height:1.8;color:rgba(255,255,255,.66)}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{
  border:1px solid var(--line)!important;border-radius:16px!important;
  background:#fff;margin-bottom:12px;overflow:hidden;
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--t-strong);
  padding:20px 24px;background:#fff;box-shadow:none!important;
  position:relative;
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--grad);opacity:0;transition:opacity .25s var(--ease);
}
.accordion-button:not(.collapsed){background:var(--page);color:var(--brand)}
.accordion-button:not(.collapsed)::before{opacity:1}
.accordion-button::after{
  background-image:none;content:"";width:9px;height:9px;flex:0 0 auto;
  border-right:2px solid var(--t-mute);border-bottom:2px solid var(--t-mute);
  transform:rotate(45deg) translateY(-2px);transition:transform .28s var(--ease),border-color .28s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg) translateY(-2px);border-color:var(--brand)}
.accordion-body{padding:6px 24px 24px;font-size:15px;line-height:1.85;color:var(--t-body)}

/* ============ 相关分类 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;gap:20px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--shadow-sm);transition:all .25s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.rel-card .thumb{
  width:96px;height:96px;flex:0 0 96px;border-radius:var(--r-md);overflow:hidden;background:var(--grad);
}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover}
.rel-card h3{font-size:18px;margin-bottom:6px}
.rel-card p{font-size:14px;line-height:1.7;color:var(--t-mute)}
.rel-card .go{font-size:14px;font-weight:600;color:var(--brand);margin-top:8px;display:inline-flex;align-items:center;gap:6px}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:28px;padding:56px;
  background:var(--grad);color:#fff;display:flex;align-items:center;
  justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22) 0%,rgba(255,255,255,0) 70%);
}
.cta-band .cta-text{position:relative;z-index:2;max-width:640px}
.cta-band h2{color:#fff;font-size:30px;line-height:1.35;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.9);font-size:16px;line-height:1.8}
.cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);color:rgba(255,255,255,.72);
  padding:72px 0 32px;position:relative;margin-top:96px;
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.35fr;gap:40px}
.footer-brand .brand-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin:18px 0 20px;max-width:340px}
.footer-social{display:flex;gap:12px}
.footer-social a{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);color:#fff;font-size:15px;
  transition:all .25s var(--ease);
}
.footer-social a:hover{background:var(--grad);border-color:transparent;color:#fff;transform:translateY(-2px)}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col ul li a,.footer-contact li{
  display:inline-flex;align-items:center;gap:8px;
  color:rgba(255,255,255,.7);font-size:14px;padding:6px 0;
  transition:color .22s var(--ease),transform .22s var(--ease);
}
.footer-col ul li a:hover{color:var(--brand-2);transform:translateX(2px)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;line-height:1.7}
.footer-contact i{color:var(--brand-2);margin-top:5px;font-size:13px}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 响应式 ============ */
@media (min-width:1400px){
  .container{max-width:1320px}
}
@media (max-width:1199.98px){
  .layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .side-nav{position:static}
  .side-nav .side-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px}
  .side-nav .side-list a{white-space:nowrap;background:var(--page)}
  .side-nav .side-list a i{display:none}
  .side-note{display:none}
  .card-wide{grid-template-columns:1fr;padding:28px}
  .card-wide .card-media{order:-1}
}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .cat-hero h1{font-size:32px}
  .block-head h2{font-size:26px}
  .check-band{padding:36px}
  .check-band h2,.cta-band h2{font-size:26px}
  .cta-band{padding:38px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .main-nav .container{flex-wrap:wrap}
  .navbar-collapse{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    padding:14px;margin-top:12px;box-shadow:var(--shadow-sm);
  }
  .nav-list{gap:0}
  .nav-list .nav-link{padding:12px;min-height:48px;display:flex;align-items:center}
  .nav-list .nav-link::after{left:12px;right:auto;width:34px;bottom:6px}
  .nav-actions{flex-direction:column;align-items:stretch;gap:10px;margin-top:10px}
  .nav-actions .btn{width:100%}
}
@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px}
  .topbar-note,.topbar-divider{display:none}
  .cat-hero{padding:36px 0 48px}
  .cat-hero h1{font-size:28px;line-height:1.3}
  .hero-sub{font-size:15.5px}
  .stat-chip{font-size:13px;padding:8px 14px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .col-stack.offset-up{margin-top:0}
  .check-grid,.rel-grid{grid-template-columns:minmax(0,1fr)}
  .fix-list li{grid-template-columns:1fr;gap:6px}
  .rel-card{flex-direction:column;align-items:flex-start}
  .cta-band{padding:30px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:575.98px){
  .topbar{font-size:12px}
  .topbar-link:first-of-type,.topbar-badge{display:none}
  .section{padding:56px 0}
  .card{padding:22px}
  .check-band{padding:26px}
  .brand-text{font-size:16px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}

/* roulang page: category2 */
:root{
  --brand:#6C3BFF;
  --brand-2:#00CFB4;
  --accent:#FF6A4D;
  --ink:#14121C;
  --bg:#F7F6F3;
  --card:#FFFFFF;
  --soft:#EFF0F4;
  --title:#16161C;
  --text:#4A4F5C;
  --muted:#868C99;
  --line:#E4E2EA;
  --grad:linear-gradient(135deg,#6C3BFF 0%,#00CFB4 100%);
  --grad-soft:linear-gradient(135deg,rgba(108,59,255,.12),rgba(0,207,180,.12));
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --r-btn:14px;
  --shadow:0 12px 28px -16px rgba(20,18,28,.16);
  --shadow-h:0 22px 44px -20px rgba(108,59,255,.35);
  --ease:cubic-bezier(.2,.7,.3,1);

  --bs-primary:#6C3BFF;
  --bs-secondary:#00CFB4;
  --bs-body-bg:#F7F6F3;
  --bs-body-color:#4A4F5C;
  --bs-border-color:#E4E2EA;
  --bs-border-radius:14px;
  --bs-link-color:#6C3BFF;
  --bs-link-hover-color:#00CFB4;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--title);font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:var(--brand-2);}
img{max-width:100%;display:block;}
button{font-family:inherit;}

a:focus-visible,
button:focus-visible,
.btn:focus-visible{
  outline:3px solid rgba(108,59,255,.35);
  outline-offset:2px;
  border-radius:8px;
}
.hero-alt a:focus-visible,
.hero-alt button:focus-visible{outline-color:rgba(255,255,255,.7);}

.container{
  width:100%;
  max-width:1240px;
  margin-inline:auto;
  padding-inline:24px;
}
@media (min-width:1400px){ .container{max-width:1320px;} }

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--ink);
  color:rgba(255,255,255,.88);
  font-size:13px;
  line-height:40px;
  min-height:40px;
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:12px;}
.topbar-domain{color:#fff;font-weight:600;letter-spacing:.02em;}
.topbar-note{color:rgba(255,255,255,.62);}
.topbar-divider{width:1px;height:14px;background:rgba(255,255,255,.12);display:inline-block;}
.topbar-link{color:rgba(255,255,255,.82);}
.topbar-link:hover{color:var(--brand-2);}
.topbar-badge{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-2);
  font-weight:600;
}
.topbar-badge i{font-size:11px;}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;}
.main-nav{
  background:#fff;
  height:72px;
  padding:0;
  border-bottom:1px solid var(--line);
  transition:height .25s var(--ease),box-shadow .25s var(--ease);
}
.main-nav.scrolled{
  height:60px;
  box-shadow:0 10px 26px -20px rgba(20,18,28,.5);
  border-bottom-color:transparent;
}
.main-nav .container{
  height:100%;
  display:flex;
  align-items:center;
  flex-wrap:nowrap;
}
.brand-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  flex:0 0 auto;
}
.brand-mark{
  width:38px;height:38px;
  border-radius:12px;
  background:var(--grad);
  color:#fff;
  font-weight:800;
  font-size:14px;
  display:grid;place-items:center;
  letter-spacing:.02em;
  box-shadow:0 10px 20px -14px rgba(108,59,255,.9);
}
.brand-text{
  font-size:18px;
  font-weight:700;
  color:var(--title);
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand-suffix{color:var(--brand);font-weight:600;margin-left:2px;}

.nav-toggle{
  margin-left:auto;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  padding:0 11px;
}
.nav-toggle:focus{box-shadow:none;}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--title);transition:transform .25s var(--ease),opacity .25s 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);}

.nav-list{display:flex;align-items:center;gap:4px;}
.nav-list .nav-link{
  color:var(--text);
  font-size:15px;
  font-weight:600;
  position:relative;
  transition:color .25s var(--ease);
}
.nav-list .nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:14px;
  height:3px;
  border-radius:3px;
  background:var(--grad);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .25s var(--ease);
}
.nav-list .nav-link:hover{color:var(--brand);}
.nav-list .nav-link.active{color:var(--brand);}
.nav-list .nav-link.active::after,
.nav-list .nav-link:hover::after{transform:scaleX(1);}

.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{
  border-radius:var(--r-btn);
  font-weight:600;
  font-size:15px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),filter .25s var(--ease);
}
.btn-grad{
  background:var(--grad);
  color:#fff;
  border:none;
  padding:11px 22px;
}
.btn-grad:hover{
  color:#fff;
  filter:brightness(1.05);
  box-shadow:var(--shadow-h);
  transform:translateY(-1px);
}
.btn-grad:active{transform:translateY(0) scale(.99);}
.btn-outline-brand{
  background:#fff;
  border:1px solid var(--line);
  color:var(--title);
  padding:10px 20px;
}
.btn-outline-brand:hover{
  border-color:rgba(108,59,255,.55);
  color:var(--brand);
}
.btn-ghost{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.32);
  color:#fff;
  padding:11px 22px;
  backdrop-filter:blur(4px);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.16);
  border-color:rgba(255,255,255,.6);
  color:#fff;
}
.btn-lg{font-size:16px;padding:14px 28px;border-radius:999px;}

/* ============ 面包屑 ============ */
.crumbs{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(255,255,255,.68);
  margin-bottom:28px;
  flex-wrap:wrap;
}
.crumbs a{color:rgba(255,255,255,.78);display:inline-flex;align-items:center;gap:6px;}
.crumbs a:hover{color:var(--brand-2);}
.crumbs .sep{color:rgba(255,255,255,.34);}
.crumbs .current{color:var(--brand-2);font-weight:600;}

/* ============ Hero（宽幅带头图） ============ */
.hero-alt{
  position:relative;
  background:var(--ink);
  overflow:hidden;
}
.hero-alt::before{
  content:"";
  position:absolute;
  inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.5;
}
.hero-alt::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(900px 420px at 78% 14%, rgba(108,59,255,.34), transparent 70%),
    radial-gradient(720px 400px at 10% 92%, rgba(0,207,180,.22), transparent 72%),
    linear-gradient(180deg, rgba(20,18,28,.78) 0%, rgba(20,18,28,.93) 100%);
}
.hero-alt__inner{
  position:relative;
  z-index:2;
  padding:72px 0 92px;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:#fff;
  padding:7px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.22);
  margin-bottom:20px;
}
.hero-alt h1{
  color:#fff;
  font-size:44px;
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:20px;
}
.hero-lead{
  color:rgba(255,255,255,.84);
  font-size:18px;
  line-height:1.85;
  max-width:620px;
  margin-bottom:32px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:12px 26px;
}
.hero-points li{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:rgba(255,255,255,.86);
  font-size:14px;
}
.hero-points i{color:var(--brand-2);font-size:12px;}

.hero-panel{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);
  padding:26px 26px 22px;
  backdrop-filter:blur(10px);
  box-shadow:0 30px 60px -40px rgba(0,0,0,.9);
}
.hero-panel__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:16px;
  border-bottom:1px solid rgba(255,255,255,.12);
  color:#fff;
  font-weight:600;
  font-size:16px;
}
.pill-ok{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;
  font-weight:600;
  color:#04241f;
  background:var(--brand-2);
  padding:4px 12px;
  border-radius:999px;
}
.check-list li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.1);
  font-size:14px;
}
.check-list li:last-child{border-bottom:none;}
.check-list span{color:rgba(255,255,255,.7);}
.check-list strong{
  color:#fff;
  font-weight:700;
  font-variant-numeric:tabular-nums;
}
.hero-panel__foot{
  margin-top:12px;
  font-size:13px;
  color:rgba(255,255,255,.6);
  line-height:1.7;
}

/* ============ 数据徽章条 ============ */
.stats-strip{
  background:#fff;
  border-bottom:1px solid var(--line);
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  padding:44px 0;
}
.stats-grid li{
  position:relative;
  padding-left:20px;
}
.stats-grid li::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;
  width:3px;
  border-radius:3px;
  background:var(--grad);
}
.stat-line{
  display:flex;
  align-items:baseline;
  gap:6px;
}
.stat-num{
  font-size:34px;
  font-weight:800;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-unit{font-size:15px;font-weight:700;color:var(--title);}
.stats-grid p{
  font-size:14px;
  color:var(--text);
  line-height:1.65;
  margin-top:4px;
}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section--soft{background:var(--soft);}
.section-head{max-width:760px;margin-bottom:52px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--brand);
  background:var(--grad-soft);
  padding:6px 14px;
  border-radius:999px;
  margin-bottom:16px;
}
.section-head h2{font-size:30px;line-height:1.4;margin-bottom:14px;}
.section-head p{font-size:16px;color:var(--text);line-height:1.85;}

/* ============ 登录方式对照（Bento 卡网格） ============ */
.compare-grid{align-items:stretch;}
.compare-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--shadow);
  height:100%;
  position:relative;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.compare-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-h);
  border-color:rgba(108,59,255,.4);
}
.compare-card--lead{
  display:flex;
  flex-direction:column;
}
.compare-card--lead img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:var(--r-md);
  margin-bottom:22px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  padding:5px 12px;
  border-radius:999px;
  background:var(--grad-soft);
  color:var(--brand);
  margin-bottom:14px;
}
.tag--accent{background:rgba(255,106,77,.12);color:#D8402A;}
.compare-card h3{font-size:22px;line-height:1.45;margin-bottom:12px;}
.compare-card > p,
.compare-card .card-lead{
  font-size:15px;
  color:var(--text);
  line-height:1.85;
  margin-bottom:18px;
}
.fact-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14.5px;
  color:var(--text);
  line-height:1.7;
  padding:7px 0;
}
.fact-list i{
  color:var(--brand-2);
  font-size:13px;
  margin-top:7px;
}
.card-foot{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--line);
  font-size:13.5px;
  color:var(--muted);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.card-foot strong{color:var(--title);font-weight:700;}
.compare-stack{
  display:grid;
  grid-template-rows:1fr 1fr;
  gap:24px;
  height:100%;
}
.compare-stack .compare-card{padding:24px;}

/* ============ 加固步骤（时间线） ============ */
.steps-wrap{
  display:grid;
  grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);
  gap:56px;
  align-items:start;
}
.step{
  display:grid;
  grid-template-columns:72px minmax(0,1fr);
  gap:26px;
  position:relative;
  padding-bottom:40px;
}
.step:last-child{padding-bottom:0;}
.step:not(:last-child)::before{
  content:"";
  position:absolute;
  left:35px;
  top:80px;
  bottom:6px;
  width:2px;
  background:linear-gradient(180deg,rgba(108,59,255,.55),rgba(0,207,180,.35));
}
.step-num{
  width:72px;height:72px;
  border-radius:50%;
  background:var(--grad);
  color:#fff;
  font-weight:800;
  font-size:24px;
  font-variant-numeric:tabular-nums;
  display:grid;
  place-items:center;
  box-shadow:0 16px 30px -20px rgba(108,59,255,.9);
  position:relative;
  z-index:1;
}
.step-body h3{
  font-size:22px;
  line-height:1.45;
  margin-bottom:10px;
}
.step-body p{font-size:15.5px;line-height:1.85;color:var(--text);}
.step-body .mini-list{
  margin-top:12px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.mini-list span{
  font-size:13px;
  color:var(--muted);
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  padding:5px 12px;
}
.steps-aside{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:28px;
  box-shadow:var(--shadow);
  position:sticky;
  top:96px;
}
.steps-aside h3{font-size:20px;margin-bottom:14px;}
.steps-aside p{font-size:14.5px;line-height:1.85;color:var(--text);margin-bottom:18px;}
.aside-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:14.5px;
  color:var(--text);
  padding:9px 0;
  border-bottom:1px solid var(--line);
}
.aside-list li:last-child{border-bottom:none;}
.aside-list i{color:var(--brand);margin-top:8px;font-size:12px;}
.aside-note{
  margin-top:20px;
  padding:16px 18px;
  border-radius:var(--r-md);
  background:var(--soft);
  font-size:13.5px;
  color:var(--text);
  line-height:1.75;
}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin-inline:auto;}
.acc-item{
  background:#fff;
  border:1px solid var(--line) !important;
  border-radius:var(--r-md) !important;
  overflow:hidden;
  margin-bottom:12px;
  box-shadow:var(--shadow);
}
.acc-item .accordion-button{
  position:relative;
  width:100%;
  font-size:17px;
  font-weight:600;
  color:var(--title);
  background:#fff;
  padding:20px 22px;
  border:none;
  box-shadow:none !important;
  transition:background .25s var(--ease),color .25s var(--ease);
}
.acc-item .accordion-button::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:3px;
  border-radius:3px;
  background:var(--grad);
  opacity:0;
  transition:opacity .25s var(--ease);
}
.acc-item .accordion-button::after{
  content:"";
  width:11px;height:11px;
  border-right:2px solid var(--muted);
  border-bottom:2px solid var(--muted);
  background-image:none !important;
  transform:rotate(45deg);
  margin-left:auto;
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.acc-item .accordion-button:not(.collapsed){
  background:#F7F6F3;
  color:var(--brand);
}
.acc-item .accordion-button:not(.collapsed)::before{opacity:1;}
.acc-item .accordion-button:not(.collapsed)::after{
  transform:rotate(-135deg);
  border-color:var(--brand);
}
.acc-item .accordion-body{
  font-size:15px;
  line-height:1.9;
  color:var(--text);
  padding:4px 24px 24px 24px;
  background:#F7F6F3;
}

/* ============ 相关入口 ============ */
.link-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.link-card{
  display:flex;
  flex-direction:column;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
  height:100%;
}
.link-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-h);
  border-color:rgba(108,59,255,.4);
}
.link-card img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.link-card__body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.link-card h3{font-size:20px;line-height:1.45;}
.link-card p{font-size:14.5px;line-height:1.8;color:var(--text);}
.link-card .more{
  margin-top:auto;
  font-size:14.5px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.link-card .more i{transition:transform .25s var(--ease);}
.link-card:hover .more i{transform:translateX(4px);}
.link-card--plain{
  justify-content:center;
  padding:28px;
  background:var(--grad-soft);
  border-color:rgba(108,59,255,.24);
}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  background:var(--grad);
  border-radius:var(--r-lg);
  padding:56px 48px;
  overflow:hidden;
  color:#fff;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(600px 300px at 88% 12%, rgba(255,255,255,.22), transparent 70%);
}
.cta-band__inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:30px;line-height:1.4;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.9);font-size:16px;line-height:1.8;max-width:640px;}
.cta-band .btn-light-brand{
  background:#fff;
  color:var(--brand);
  border:none;
  padding:14px 30px;
  border-radius:999px;
  font-weight:700;
  font-size:16px;
  white-space:nowrap;
}
.cta-band .btn-light-brand:hover{
  transform:translateY(-2px);
  box-shadow:0 20px 36px -22px rgba(0,0,0,.6);
  color:var(--brand);
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  position:relative;
  margin-top:96px;
  font-size:14px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:var(--grad);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding:72px 0 40px;
}
.site-footer .brand-text{color:#fff;}
.site-footer .brand-suffix{color:var(--brand-2);}
.footer-brand p{
  margin:20px 0 22px;
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.66);
  max-width:340px;
}
.footer-social{display:flex;gap:12px;}
.footer-social a{
  width:40px;height:40px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  display:grid;place-items:center;
  color:rgba(255,255,255,.8);
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.footer-social a:hover{
  background:rgba(255,255,255,.08);
  color:var(--brand-2);
  transform:translateY(-2px);
}
.footer-col h4{
  color:#fff;
  font-size:16px;
  margin-bottom:18px;
}
.footer-col ul li a{
  color:rgba(255,255,255,.72);
  display:inline-block;
  padding:6px 0;
  transition:color .25s var(--ease),transform .25s var(--ease);
}
.footer-col ul li a:hover{
  color:var(--brand-2);
  transform:translateX(2px);
}
.footer-contact li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:6px 0;
  color:rgba(255,255,255,.72);
  line-height:1.75;
}
.footer-contact i{color:var(--brand-2);margin-top:7px;font-size:12px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 32px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .hero-alt h1{font-size:38px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .steps-wrap{grid-template-columns:1fr;gap:40px;}
  .steps-aside{position:static;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
}

@media (max-width:991.98px){
  .main-nav{height:auto;min-height:64px;padding:10px 0;}
  .main-nav .container{flex-wrap:wrap;}
  .nav-toggle{margin-left:auto;}
  .main-nav .navbar-collapse{
    width:100%;
    margin-top:14px;
    padding:10px 0 20px;
    border-top:1px solid var(--line);
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .nav-list .nav-link{
    height:48px;
    display:flex;
    align-items:center;
    padding:0 4px;
    border-bottom:1px solid var(--line);
  }
  .nav-list .nav-link::after{display:none;}
  .nav-list .nav-link.active{border-bottom-color:rgba(108,59,255,.4);}
  .nav-actions{
    flex-direction:column;
    align-items:stretch;
    gap:10px;
    margin-top:18px;
  }
  .nav-actions .btn{width:100%;text-align:center;}
  .section{padding:72px 0;}
  .hero-alt__inner{padding:56px 0 72px;}
  .link-grid{grid-template-columns:1fr 1fr;}
  .link-grid .link-card--plain{grid-column:span 2;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:44px 32px;}
  .cta-band h2{font-size:26px;}
}

@media (max-width:767.98px){
  .section{padding:56px 0;}
  .section-head{margin-bottom:36px;}
  .section-head h2{font-size:24px;}
  .hero-alt h1{font-size:30px;}
  .hero-lead{font-size:16px;}
  .hero-cta{gap:12px;}
  .hero-cta .btn{width:100%;text-align:center;}
  .compare-card{padding:24px;}
  .compare-card--lead img{aspect-ratio:4/3;}
  .step{grid-template-columns:52px minmax(0,1fr);gap:18px;padding-bottom:32px;}
  .step-num{width:52px;height:52px;font-size:18px;}
  .step:not(:last-child)::before{left:25px;top:60px;}
  .step-body h3{font-size:19px;}
  .link-grid{grid-template-columns:1fr;}
  .link-grid .link-card--plain{grid-column:span 1;}
  .cta-band{padding:36px 24px;border-radius:var(--r-md);}
  .footer-bottom{flex-direction:column;}
  .footer-grid{padding:56px 0 32px;}
}

@media (max-width:575.98px){
  .container{padding-inline:16px;}
  .topbar{font-size:12px;}
  .topbar-inner{justify-content:space-between;}
  .topbar-note,.topbar-right .topbar-link{display:none;}
  .topbar-right .topbar-divider{display:none;}
  .brand-text{font-size:16px;}
  .hero-alt h1{font-size:26px;}
  .stats-grid{grid-template-columns:1fr;gap:20px;}
  .stat-num{font-size:28px;}
  .acc-item .accordion-button{font-size:16px;padding:18px;}
  .acc-item .accordion-body{padding:2px 20px 20px;}
  .footer-grid{grid-template-columns:1fr;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    transition-duration:.001ms !important;
    animation-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}