/* roulang page: index */
:root{
  --brand:#5B4BE0;
  --brand-light:#8A7CF0;
  --brand-soft:#EFEDFF;
  --cyan:#2FC6C0;
  --gold:#F5B942;
  --ink:#10112A;
  --ink-2:#1B1C3D;
  --bg:#F7F6FF;
  --card:#FFFFFF;
  --line:#E6E4F5;
  --t1:#10112A;
  --t2:#3A3C58;
  --t3:#6E7090;
  --d-t1:#EDEDFB;
  --d-t2:#A9A9C8;
  --grad:linear-gradient(120deg,#5B4BE0 0%,#8A7CF0 48%,#2FC6C0 100%);
  --r-card:20px;
  --r-lg:28px;
  --r-img:16px;
  --sh1:0 2px 6px rgba(16,17,42,.05);
  --sh2:0 10px 30px rgba(16,17,42,.08);
  --sh3:0 18px 44px rgba(91,75,224,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:260px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--t2);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease)}
a:hover{color:var(--brand-light)}
h1,h2,h3,h4{margin:0 0 .5em;color:var(--t1);line-height:1.3;font-weight:700}
h1{font-size:clamp(28px,4vw,46px);font-weight:800;line-height:1.25;letter-spacing:-.5px}
h2{font-size:clamp(24px,2.6vw,32px)}
h3{font-size:20px;font-weight:600}
p{margin:0 0 1em}
ul{margin:0 0 1em;padding-left:1.15em}
li{margin-bottom:.35em}
button,input,select{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
::selection{background:var(--brand-soft);color:var(--brand)}

/* ===== 布局骨架 ===== */
.side-main{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
.page-container{width:100%;max-width:1040px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{margin-bottom:44px;max-width:760px}
.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:5px 14px;margin-bottom:16px}
.section-head h2{position:relative;padding-left:18px;margin-bottom:14px}
.section-head h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:var(--grad)}
.section-head p{color:var(--t3);margin:0;font-size:16.5px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px}
.link-arrow .arw{transition:transform .22s var(--ease)}
.link-arrow:hover .arw{transform:translateX(3px)}

/* ===== 左侧竖向导航 ===== */
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;z-index:70;
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:24px 18px 20px;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--t1);font-weight:800;font-size:17px;letter-spacing:-.2px}
.brand:hover{color:var(--brand)}
.brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:11px;background:var(--grad);display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(91,75,224,.28)}
.brand-mark svg{width:20px;height:20px}
.brand-slogan{font-size:12px;color:var(--t3);margin:8px 0 0;line-height:1.6}
.nav-scroll{flex:1 1 auto;overflow-y:auto;margin-top:26px;padding-right:2px}
.nav-group-title{font-size:12px;letter-spacing:.05em;color:var(--t3);font-weight:600;margin:18px 0 8px 14px}
.nav-group-title:first-child{margin-top:0}
.nav-list{list-style:none;margin:0;padding:0}
.nav-list li{margin:0 0 4px}
.nav-link-item{
  position:relative;display:flex;align-items:center;gap:10px;height:44px;padding:0 14px;border-radius:12px;
  color:var(--t2);font-size:15px;font-weight:500;transition:all .22s var(--ease);
}
.nav-link-item:hover{background:var(--brand-soft);color:var(--brand);transform:translateX(2px)}
.nav-link-item.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav-link-item.is-active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--grad)}
.nav-link-item .dot{width:6px;height:6px;border-radius:50%;background:var(--brand-light);flex:0 0 6px;opacity:.7}
.nav-cta{margin-top:18px;background:var(--brand-soft);border-radius:16px;padding:18px 16px}
.nav-cta p{margin:0 0 12px;font-size:13.5px;line-height:1.7;color:var(--t2)}
.btn-nav{display:block;text-align:center;height:42px;line-height:42px;border-radius:999px;background:var(--brand);color:#fff;font-size:14px;font-weight:600;padding:0 12px}
.btn-nav:hover{background:var(--brand-light);color:#fff;box-shadow:0 10px 24px rgba(91,75,224,.32)}

/* ===== 移动端顶部导航 ===== */
.mobile-bar{display:none}
.mobile-head{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh2)}
.mobile-head-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px}
.hamburger{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--t1);transition:all .22s var(--ease)}
body.nav-open .hamburger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.nav-open .hamburger span:nth-child(2){opacity:0}
body.nav-open .hamburger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-panel{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);background:#fff}
body.nav-open .mobile-panel{max-height:80vh;overflow-y:auto}
.mobile-panel-inner{padding:10px 20px 24px}
.mobile-panel .nav-link-item{height:48px}
.mobile-panel .nav-group-title{margin-left:14px}

/* ===== 按钮 ===== */
.btn{font-family:inherit;font-weight:600;border-radius:999px}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 30px;
  border:0;border-radius:999px;background:var(--grad);color:#fff;font-size:15.5px;font-weight:600;
  box-shadow:0 8px 22px rgba(91,75,224,.28);transition:all .22s var(--ease);
}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 36px rgba(91,75,224,.38)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--brand);font-size:15.5px;font-weight:600;
  transition:all .22s var(--ease);
}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-light);color:var(--brand)}
.btn-ghost-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border:1px solid rgba(255,255,255,.28);border-radius:999px;background:rgba(255,255,255,.06);color:#fff;font-size:15.5px;font-weight:600;
  transition:all .22s var(--ease);
}
.btn-ghost-dark:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.5);color:#fff}
.btn-brand:focus-visible,.btn-ghost:focus-visible,.btn-ghost-dark:focus-visible,.btn-nav:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* ===== 首屏 ===== */
.hero{
  position:relative;overflow:hidden;color:var(--d-t2);
  background-image:linear-gradient(160deg,rgba(16,17,42,.92) 0%,rgba(16,17,42,.88) 45%,rgba(27,28,61,.94) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:84px 0 76px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 420px at 10% 16%,rgba(91,75,224,.55),transparent 70%),
    radial-gradient(520px 380px at 90% 80%,rgba(47,198,192,.34),transparent 70%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.32;
  background-image:radial-gradient(rgba(255,255,255,.75) 1px,transparent 1.5px),radial-gradient(rgba(255,255,255,.45) 1px,transparent 1.5px);
  background-size:140px 140px,90px 90px;background-position:0 0,40px 60px;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{color:#fff;margin-bottom:18px}
.hero h1 .hl{background:linear-gradient(120deg,#8A7CF0 0%,#2FC6C0 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:17.5px;line-height:1.85;color:#CFCFE6;max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.stat-row{display:flex;flex-wrap:wrap;gap:12px}
.stat-pill{
  display:flex;align-items:center;gap:12px;padding:12px 20px;border-radius:999px;
  border:1px solid transparent;
  background-image:linear-gradient(#191A38,#191A38),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.stat-num{font-size:24px;font-weight:800;color:#fff;line-height:1;letter-spacing:-.5px}
.stat-num .unit{font-size:13px;font-weight:600;color:var(--cyan);margin-left:2px}
.stat-desc{font-size:12.5px;color:var(--d-t2);line-height:1.4;max-width:110px}
.hero-visual{position:relative}
.hero-visual img{width:100%;height:400px;border-radius:24px;border:1px solid rgba(255,255,255,.14);box-shadow:0 26px 64px rgba(0,0,0,.5)}
.float-badge{
  position:absolute;background:#fff;border-radius:14px;padding:12px 16px;box-shadow:0 14px 34px rgba(0,0,0,.32);
  display:flex;align-items:center;gap:10px;
}
.float-badge .fb-num{font-size:20px;font-weight:800;color:var(--brand);line-height:1}
.float-badge .fb-txt{font-size:12px;color:var(--t3);line-height:1.35}
.fb-a{left:-18px;bottom:34px}
.fb-b{right:-14px;top:28px}

/* ===== 价值主张条 ===== */
.value-strip{background:#fff;border-bottom:1px solid var(--line)}
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:40px 0}
.value-item{display:flex;gap:12px;align-items:flex-start}
.value-icon{width:38px;height:38px;flex:0 0 38px;border-radius:12px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center}
.value-icon svg{width:19px;height:19px;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.value-item h3{font-size:15.5px;margin-bottom:4px}
.value-item p{margin:0;font-size:13.5px;line-height:1.7;color:var(--t3)}

/* ===== 功能分组 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.f-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);padding:30px;
  box-shadow:var(--sh1);transition:all .22s var(--ease);
}
.f-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--brand-light)}
.f-card h3{margin-bottom:12px}
.f-card p.f-desc{margin:0 0 16px;color:var(--t3);font-size:15px}
.f-icon{width:44px;height:44px;border-radius:13px;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.f-icon svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.f-list{list-style:none;margin:0;padding:0}
.f-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--t2);margin-bottom:8px;line-height:1.7}
.f-list li::before{content:"";position:absolute;left:0;top:9px;width:10px;height:10px;border-radius:50%;background:var(--brand-soft);border:2px solid var(--cyan)}
.f-card--wide{grid-column:span 2;display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:center}
.f-card--wide img{width:100%;height:280px;border-radius:var(--r-img);border:1px solid var(--line)}

/* ===== 使用场景 ===== */
.scene{border-radius:var(--r-lg);background:#fff;border:1px solid var(--line);box-shadow:var(--sh1);overflow:hidden;display:grid;grid-template-columns:1fr 1fr;gap:0;margin-bottom:28px;transition:all .22s var(--ease)}
.scene:hover{box-shadow:var(--sh2);border-color:var(--brand-light)}
.scene-img{position:relative;min-height:300px}
.scene-img img{width:100%;height:100%;position:absolute;inset:0}
.scene-body{padding:38px 40px}
.scene-body h3{font-size:22px;margin-bottom:14px}
.scene-body .f-list{margin-bottom:22px}
.scene--reverse .scene-img{order:2}
.scene--reverse .scene-body{order:1}

/* ===== 成功案例 ===== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px;box-shadow:var(--sh1);transition:all .22s var(--ease);display:flex;flex-direction:column}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--brand-light)}
.case-tag{display:inline-block;font-size:12.5px;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 12px;margin-bottom:16px;align-self:flex-start}
.case-card blockquote{margin:0 0 20px;font-size:15.5px;line-height:1.8;color:var(--t2)}
.case-foot{margin-top:auto;display:flex;align-items:center;gap:12px}
.avatar{width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;flex:0 0 38px}
.case-foot .who{font-size:13.5px;color:var(--t3);line-height:1.5}
.badge-num{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:6px 14px;font-size:13px;color:var(--t2);border:1px solid transparent;background-image:linear-gradient(#fff,#fff),var(--grad);background-origin:border-box;background-clip:padding-box,border-box;margin-bottom:18px;align-self:flex-start}
.badge-num b{font-size:18px;font-weight:800;color:var(--brand)}

/* ===== 价格 ===== */
.pricing{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.price-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:34px 32px;box-shadow:var(--sh1);transition:all .22s var(--ease)}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--brand-light)}
.price-name{font-size:16px;font-weight:600;color:var(--t1);margin-bottom:6px}
.price-amount{display:flex;align-items:baseline;gap:6px;margin:12px 0 6px}
.price-amount .num{font-size:36px;font-weight:800;color:var(--t1);letter-spacing:-1px;line-height:1}
.price-amount .unit{font-size:14px;color:var(--t3)}
.price-note{font-size:13px;color:var(--t3);margin-bottom:22px}
.price-list{list-style:none;margin:0 0 26px;padding:0}
.price-list li{position:relative;padding-left:26px;font-size:14.5px;margin-bottom:10px;line-height:1.7;color:var(--t2)}
.price-list li::before{content:"";position:absolute;left:0;top:7px;width:14px;height:9px;border-left:2px solid var(--cyan);border-bottom:2px solid var(--cyan);transform:rotate(-45deg)}
.price-card .btn-ghost,.price-card .btn-brand{width:100%}
.price-foot{font-size:13px;color:var(--t3);text-align:center;margin:22px 0 0}
.price-card--featured{
  color:var(--d-t2);border:1px solid transparent;
  background-image:linear-gradient(#10112A,#10112A),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:0 22px 50px rgba(16,17,42,.24);
}
.price-card--featured .price-name,
.price-card--featured .price-amount .num{color:#fff}
.price-card--featured .price-amount .unit,
.price-card--featured .price-note,
.price-card--featured .price-list li{color:var(--d-t2)}
.price-flag{position:absolute;top:-13px;left:32px;background:var(--gold);color:#3A2A00;font-size:12.5px;font-weight:700;border-radius:999px;padding:5px 14px;box-shadow:0 6px 16px rgba(245,185,66,.35)}

/* ===== 资讯列表 ===== */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.news-head .section-head{margin-bottom:0}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh1);transition:all .22s var(--ease);display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--brand-light)}
.news-cover{display:block;aspect-ratio:16/10;overflow:hidden}
.news-cover img{width:100%;height:100%}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.tag{display:inline-block;font-size:12.5px;color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:4px 12px;margin-bottom:12px;align-self:flex-start}
.news-body h3{font-size:17.5px;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a{color:var(--t1)}
.news-body h3 a:hover{color:var(--brand)}
.news-body p{font-size:14.5px;color:var(--t3);line-height:1.75;margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--t3)}
.news-meta .link-arrow{font-size:13.5px}
.empty-state{grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:52px 24px;text-align:center;color:var(--t3)}
.empty-state svg{width:40px;height:40px;margin-bottom:14px;stroke:var(--brand-light);fill:none;stroke-width:1.4}
.empty-state p{margin:0 0 18px;font-size:15px}

/* ===== FAQ ===== */
.faq{max-width:880px}
.faq .accordion-item{border:0;background:#fff;border-radius:16px;margin-bottom:12px;box-shadow:var(--sh1);overflow:hidden}
.faq .accordion-button{background:#fff;color:var(--t1);font-size:17px;font-weight:600;padding:20px 24px;box-shadow:none;border-radius:16px}
.faq .accordion-button:not(.collapsed){color:var(--brand);background:#fff}
.faq .accordion-button:focus{box-shadow:none;outline:2px solid var(--cyan);outline-offset:-2px}
.faq .accordion-button::after{
  content:"+";background-image:none;width:28px;height:28px;flex:0 0 28px;border-radius:999px;background-color:var(--brand-soft);
  color:var(--brand);font-size:18px;font-weight:600;line-height:1;display:flex;align-items:center;justify-content:center;transform:none;
  transition:transform .22s var(--ease),background-color .22s var(--ease);
}
.faq .accordion-button:not(.collapsed)::after{content:"×";transform:rotate(90deg);background-color:var(--brand);color:#fff}
.faq .accordion-body{background:#F7F6FF;padding:20px 24px;font-size:15px;line-height:1.85;color:var(--t2)}

/* ===== 底部 CTA ===== */
.cta-band{padding:0 0 96px}
.cta-inner{
  position:relative;overflow:hidden;border-radius:var(--r-lg);padding:56px 40px;text-align:center;color:var(--d-t2);
  background-image:linear-gradient(120deg,rgba(16,17,42,.92),rgba(27,28,61,.92)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  border:1px solid transparent;
  box-shadow:0 22px 54px rgba(16,17,42,.22);
}
.cta-inner::before{content:"";position:absolute;inset:0;background:radial-gradient(420px 260px at 50% 0%,rgba(91,75,224,.5),transparent 70%);pointer-events:none}
.cta-inner > *{position:relative;z-index:2}
.cta-inner h2{color:#fff;margin-bottom:14px}
.cta-inner p{color:#C9C9E2;max-width:620px;margin:0 auto 28px;font-size:16px}
.cta-note{display:block;margin-top:16px;font-size:13px;color:var(--d-t2)}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink);color:var(--d-t2);padding:64px 0 26px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:14px}
.footer-brand:hover{color:#fff}
.site-footer p{font-size:14px;line-height:1.8;color:var(--d-t2);margin:0 0 12px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;letter-spacing:.03em;margin-bottom:16px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--d-t2);font-size:14px;display:inline-block;transition:all .22s var(--ease)}
.footer-links a:hover{color:#fff;transform:translateX(3px)}
.subscribe-form{display:flex;gap:10px;margin-top:6px}
.subscribe-form input{flex:1 1 auto;min-width:0;height:48px;border-radius:12px;border:1px solid #2A2B52;background:#191A38;color:#fff;padding:0 14px;font-size:14px;transition:all .22s var(--ease)}
.subscribe-form input::placeholder{color:#6E7090}
.subscribe-form input:focus{outline:none;border-color:var(--brand-light);box-shadow:0 0 0 3px rgba(138,124,240,.28)}
.subscribe-form button{flex:0 0 auto;height:48px;padding:0 20px;border:0;border-radius:12px;background:var(--grad);color:#fff;font-weight:600;font-size:14px;cursor:pointer;transition:all .22s var(--ease)}
.subscribe-form button:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(91,75,224,.4)}
.form-hint{font-size:12.5px;color:#6E7090;margin-top:10px}
.footer-bottom{border-top:1px solid #24254A;padding-top:22px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#7C7EA3}

/* ===== 响应式 ===== */
@media (max-width:1399px){
  :root{--nav-w:240px}
  .hero-visual img{height:360px}
}
@media (max-width:1199px){
  :root{--nav-w:220px}
  .page-container{padding:0 26px}
  .section{padding:80px 0}
  .value-grid{grid-template-columns:repeat(2,1fr);gap:22px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  :root{--nav-w:0px}
  .side-nav{display:none}
  .side-main{margin-left:0}
  .mobile-bar{display:block}
  .hero{padding:64px 0 60px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-visual img{height:300px}
  .fb-a{left:12px;bottom:14px}
  .fb-b{right:12px;top:14px}
  .section{padding:72px 0}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .f-card--wide{grid-column:span 2;grid-template-columns:1fr;gap:22px}
  .f-card--wide img{height:220px}
  .scene{grid-template-columns:1fr}
  .scene-img{min-height:240px}
  .scene-img img{position:relative;height:240px}
  .scene--reverse .scene-img{order:0}
  .scene--reverse .scene-body{order:0}
  .scene-body{padding:30px 28px}
  .case-grid{grid-template-columns:1fr 1fr}
  .price-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .page-container{padding:0 20px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .section-head{margin-bottom:32px}
  .value-grid{grid-template-columns:1fr;gap:20px;padding:32px 0}
  .feature-grid{grid-template-columns:1fr}
  .f-card--wide{grid-column:span 1}
  .f-card{padding:22px}
  .case-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-brand,.hero-actions .btn-ghost-dark{width:100%}
  .stat-pill{padding:10px 16px;gap:10px}
  .stat-num{font-size:21px}
  .cta-inner{padding:40px 22px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .price-card{padding:28px 22px}
  .faq .accordion-button{font-size:16px;padding:18px 20px}
  .subscribe-form{flex-direction:column}
  .subscribe-form button{width:100%}
}

/* roulang page: article */
:root{
  --brand:#5B4BE0;
  --brand-light:#8A7CF0;
  --brand-soft:#EFEDFF;
  --aurora:#2FC6C0;
  --gold:#F5B942;
  --ink:#10112A;
  --ink-2:#1B1C3D;
  --bg:#F7F6FF;
  --surface:#FFFFFF;
  --line:#E6E4F5;
  --text:#3A3C58;
  --text-strong:#10112A;
  --muted:#6E7090;
  --dark-text:#EDEDFB;
  --dark-muted:#A9A9C8;
  --warn:#E4572E;
  --grad:linear-gradient(120deg,#5B4BE0 0%,#8A7CF0 48%,#2FC6C0 100%);
  --r-card:20px;
  --r-big:28px;
  --r-img:16px;
  --r-pill:999px;
  --sh-1:0 2px 6px rgba(16,17,42,.05);
  --sh-2:0 10px 30px rgba(16,17,42,.08);
  --sh-hover:0 18px 44px rgba(91,75,224,.20);
  --ease:220ms cubic-bezier(.2,.7,.3,1);
  --nav-w:260px;
}
@media (max-width:1399.98px){:root{--nav-w:240px}}
@media (max-width:1199.98px){:root{--nav-w:220px}}
@media (max-width:991.98px){:root{--nav-w:0px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-left:var(--nav-w);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--ease),transform var(--ease)}
a:hover{color:var(--brand-light)}
h1,h2,h3,h4{margin:0;color:var(--text-strong);font-weight:700;line-height:1.3}
p{margin:0 0 1em}
button,input,select{font:inherit}
:focus-visible{outline:2px solid var(--aurora);outline-offset:2px;border-radius:6px}

.page-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.page-main{padding:0 0 88px}

/* ============ 左侧导航 ============ */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--surface);
  border-right:1px solid var(--line);
  display:flex;
  flex-direction:column;
  padding:24px 18px 20px;
  z-index:1030;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:800;color:var(--text-strong);
  letter-spacing:-.3px;line-height:1.2;
}
.brand:hover{color:var(--text-strong)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  background:var(--grad);
  display:grid;place-items:center;
}
.brand-mark svg{width:22px;height:22px}
.brand-tag{
  margin:10px 0 0;font-size:12px;line-height:1.6;color:var(--muted);letter-spacing:.02em;
}
.side-menu{
  margin-top:26px;flex:1 1 auto;display:flex;flex-direction:column;gap:4px;
  overflow-y:auto;
}
.menu-group{
  font-size:12px;color:var(--muted);letter-spacing:.08em;
  padding:16px 14px 6px;
}
.menu-item{
  position:relative;display:flex;align-items:center;
  height:44px;padding:0 14px;border-radius:12px;
  color:var(--text);font-size:15px;font-weight:500;
  transition:all var(--ease);
}
.menu-item:hover{background:var(--brand-soft);color:var(--brand);transform:translateX(2px)}
.menu-item.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.menu-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--grad);
}
.side-cta{
  margin-top:16px;background:var(--brand-soft);border-radius:16px;padding:16px;
}
.side-cta p{margin:0 0 12px;font-size:13px;line-height:1.7;color:var(--text)}
.side-cta .btn-brand{height:40px;font-size:14px;width:100%;padding:0 14px}

/* ============ 移动端顶栏 ============ */
.top-bar{
  display:none;
  background:var(--surface);
  box-shadow:var(--sh-2);
  padding:12px 0;
  z-index:1040;
}
.top-bar .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:12px}
.nav-toggle{
  border:1px solid var(--line);background:var(--surface);
  border-radius:12px;padding:9px 12px;line-height:0;
  transition:all var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-light);background:var(--brand-soft)}
.nav-toggle svg{width:20px;height:20px;stroke:var(--ink);stroke-width:2;stroke-linecap:round}
.mobile-menu{max-height:80vh;overflow-y:auto;padding:10px 0 18px;border-top:1px solid var(--line);margin-top:12px}
.mobile-menu .menu-item{height:48px}
.mobile-menu .side-cta{margin-top:14px}

@media (min-width:992px){
  .top-bar{display:none !important}
}
@media (max-width:991.98px){
  .side-nav{display:none}
  .top-bar{display:block}
  body{padding-left:0}
}

/* ============ 按钮与标签 ============ */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-size:15px;font-weight:600;
  border:0;cursor:pointer;box-shadow:var(--sh-1);
  transition:all var(--ease);
}
.btn-brand:hover{color:#fff;box-shadow:var(--sh-hover);transform:translateY(-2px)}
.btn-brand:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  background:var(--surface);color:var(--brand);font-size:15px;font-weight:600;
  border:1px solid var(--line);cursor:pointer;
  transition:all var(--ease);
}
.btn-ghost:hover{border-color:var(--brand-light);background:var(--brand-soft);color:var(--brand)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:14px;
}
.btn-text svg{width:14px;height:14px;transition:transform var(--ease)}
.btn-text:hover svg{transform:translateX(3px)}
.tag-pill{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  white-space:nowrap;
}
.meta-pill{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);
  font-size:12.5px;color:var(--muted);
}
.data-badge{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--surface);
  border:1px solid var(--brand-light);
  font-size:13px;color:var(--text);
}
.data-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--grad);flex:0 0 auto}
.data-badge b{font-size:18px;font-weight:800;color:var(--brand)}

/* ============ 面包屑 ============ */
.breadcrumb-row{padding:28px 0 0}
.breadcrumb-row ol{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0;padding:0;list-style:none;font-size:13px;color:var(--muted);
}
.breadcrumb-row li{display:flex;align-items:center;gap:8px}
.breadcrumb-row li+li::before{content:"›";color:#B9B7D2}
.breadcrumb-row a{color:var(--muted)}
.breadcrumb-row a:hover{color:var(--brand)}
.breadcrumb-row li[aria-current]{color:var(--text);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-header{padding:26px 0 8px;max-width:860px}
.article-header h1{
  font-size:38px;font-weight:800;line-height:1.28;letter-spacing:-.5px;
  margin:16px 0 18px;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);
}
.meta-row .sep{width:4px;height:4px;border-radius:50%;background:#C6C4DE}
.article-divider{
  height:1px;margin:30px 0 0;
  background:linear-gradient(90deg,var(--brand) 0%,var(--brand-light) 30%,var(--line) 70%);
  opacity:.55;
}

/* ============ 布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);gap:48px;
  align-items:start;margin-top:36px;
}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px}
}

/* ============ 正文排版 ============ */
.article-body{
  max-width:760px;
  font-size:17px;line-height:1.9;color:var(--text);
  word-break:break-word;
}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;
  font-size:28px;font-weight:700;line-height:1.35;color:var(--text-strong);
  margin:2em 0 .8em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:4px;background:var(--grad);
}
.article-body h3{
  font-size:21px;font-weight:600;color:var(--text-strong);
  margin:1.8em 0 .6em;
}
.article-body h4{font-size:18px;font-weight:600;margin:1.5em 0 .5em}
.article-body ul,.article-body ol{
  margin:0 0 1.2em;padding-left:1.4em;list-style:disc;
}
.article-body ol{list-style:decimal}
.article-body li{margin:.45em 0}
.article-body li::marker{color:var(--brand-light)}
.article-body blockquote{
  position:relative;margin:1.7em 0;padding:18px 24px 18px 26px;
  background:var(--bg);border-radius:0 16px 16px 0;color:var(--text);
}
.article-body blockquote::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  border-radius:4px 0 0 4px;background:var(--grad);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  max-width:100%;height:auto;border-radius:var(--r-img);
  margin:1.7em auto;box-shadow:var(--sh-1);
}
.article-body figure{margin:1.7em 0}
.article-body figcaption{
  text-align:center;font-size:13px;color:var(--muted);margin-top:10px;
}
.article-body a{
  color:var(--brand);
  text-decoration:underline;text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.article-body a:hover{color:var(--aurora)}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;
  font-size:15px;line-height:1.7;
}
.article-body thead th{
  background:var(--brand-soft);color:var(--text-strong);
  font-weight:600;text-align:left;padding:12px 16px;
  border-bottom:1px solid var(--line);
}
.article-body tbody td{
  padding:12px 16px;border-bottom:1px solid var(--line);color:var(--text);
}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.9em;background:var(--brand-soft);color:#4A3BD0;
  padding:2px 7px;border-radius:6px;
}
.article-body pre{
  background:var(--ink);color:var(--dark-text);
  padding:20px 22px;border-radius:12px;overflow-x:auto;
  font-size:14px;line-height:1.7;margin:1.6em 0;
}
.article-body pre code{background:none;color:inherit;padding:0;font-size:inherit}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}
@media (max-width:767.98px){
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:23px}
  .article-body h3{font-size:19px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}

/* ============ 空状态 ============ */
.empty-state{
  max-width:760px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:48px 32px;text-align:center;
  box-shadow:var(--sh-1);
}
.empty-state .empty-mark{
  width:56px;height:56px;margin:0 auto 18px;border-radius:18px;
  background:var(--brand-soft);display:grid;place-items:center;
}
.empty-state .empty-mark svg{width:28px;height:28px;stroke:var(--brand);fill:none;stroke-width:1.6}
.empty-state p{font-size:16px;color:var(--text);margin:0 0 20px}

/* ============ 文末操作 ============ */
.article-footer{max-width:760px;margin-top:48px}
.tag-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding-top:24px;border-top:1px solid var(--line);
}
.tag-row .label{font-size:13px;color:var(--muted);margin-right:2px}
.share-row{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:16px;margin-top:24px;padding:18px 22px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.share-row .share-text{font-size:14px;color:var(--muted);margin:0}
.share-row .share-list{display:flex;gap:10px}
.share-row .share-list span{
  display:inline-grid;place-items:center;
  width:36px;height:36px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;cursor:default;
}
.back-row{margin-top:28px}

/* ============ 侧栏 ============ */
.article-aside{position:sticky;top:32px;display:flex;flex-direction:column;gap:20px}
.aside-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);
  transition:all var(--ease);
}
.aside-card:hover{box-shadow:var(--sh-2)}
.aside-card h3{
  font-size:16px;font-weight:600;margin:0 0 14px;
  display:flex;align-items:center;gap:8px;
}
.aside-card h3::before{
  content:"";width:10px;height:10px;border-radius:50%;
  background:var(--grad);flex:0 0 auto;
}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:8px 12px;border-radius:10px;
  font-size:14px;color:var(--text);
  transition:all var(--ease);
}
.toc-list a:hover{background:var(--brand-soft);color:var(--brand);transform:translateX(2px)}
.aside-links{display:flex;flex-direction:column;gap:12px}
.aside-link{
  display:block;padding:14px 16px;border-radius:14px;
  background:var(--bg);border:1px solid var(--line);
  transition:all var(--ease);
}
.aside-link:hover{border-color:var(--brand-light);background:var(--brand-soft);transform:translateY(-2px)}
.aside-link strong{display:block;font-size:14px;color:var(--text-strong);font-weight:600;margin-bottom:4px}
.aside-link span{font-size:12.5px;color:var(--muted);line-height:1.6}
.aside-cta{
  background:var(--ink);border-radius:var(--r-card);padding:24px;
  border:1px solid rgba(255,255,255,.08);
}
.aside-cta h3{color:var(--dark-text);font-size:16px;margin:0 0 10px;display:block}
.aside-cta h3::before{display:none}
.aside-cta p{font-size:13.5px;line-height:1.75;color:var(--dark-muted);margin:0 0 16px}
.aside-cta .btn-brand{width:100%;height:44px;font-size:14px}

/* ============ 相关阅读 ============ */
.related{margin-top:64px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:28px;
}
.section-title{
  position:relative;font-size:30px;font-weight:700;letter-spacing:-.3px;
  padding-left:16px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:4px;background:var(--grad);
}
.related-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
}
.mini-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:all var(--ease);
}
.mini-card:hover{
  transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--brand-light);
}
.mini-card .mini-thumb{
  aspect-ratio:16/10;overflow:hidden;background:var(--brand-soft);
}
.mini-card .mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease)}
.mini-card:hover .mini-thumb img{transform:scale(1.04)}
.mini-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px}
.mini-body h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--text-strong)}
.mini-body p{margin:0;font-size:14px;line-height:1.75;color:var(--muted)}
.mini-card:hover h3{color:var(--brand)}

/* ============ 底部 CTA ============ */
.cta-band{
  margin-top:88px;background:var(--ink);position:relative;overflow:hidden;
  border-radius:0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(520px 260px at 18% 0%,rgba(91,75,224,.55),transparent 70%),
    radial-gradient(460px 240px at 88% 100%,rgba(47,198,192,.35),transparent 72%);
  pointer-events:none;
}
.cta-inner{
  position:relative;max-width:720px;margin:0 auto;
  padding:82px 24px;text-align:center;
}
.cta-inner h2{color:#fff;font-size:32px;letter-spacing:-.4px;margin:0 0 16px}
.cta-inner p{color:var(--dark-muted);font-size:16px;line-height:1.85;margin:0 0 28px}
.cta-note{margin:18px 0 0;font-size:13px;color:var(--dark-muted)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);color:var(--dark-muted);
  padding:72px 0 32px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(138,124,240,.5),transparent);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:800;color:#fff;margin-bottom:16px;
}
.footer-brand:hover{color:#fff}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin:0 0 18px}
.site-footer p{font-size:14px;line-height:1.8;color:var(--dark-muted);margin:0}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{
  font-size:14px;color:var(--dark-muted);display:inline-block;
  transition:all var(--ease);
}
.footer-links a:hover{color:#fff;transform:translateX(3px)}
.subscribe-form{display:flex;gap:10px;margin:14px 0 10px;flex-wrap:wrap}
.subscribe-form input{
  flex:1 1 180px;height:46px;padding:0 16px;border-radius:12px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.06);color:#fff;font-size:14px;
  transition:all var(--ease);
}
.subscribe-form input::placeholder{color:#8788A8}
.subscribe-form input:focus{
  outline:none;border-color:var(--brand-light);
  box-shadow:0 0 0 3px rgba(138,124,240,.25);
  background:rgba(255,255,255,.1);
}
.subscribe-form button{
  height:46px;padding:0 22px;border-radius:var(--r-pill);border:0;
  background:var(--grad);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:all var(--ease);
}
.subscribe-form button:hover{box-shadow:0 12px 30px rgba(91,75,224,.35);transform:translateY(-2px)}
.form-hint{font-size:12.5px;color:#8788A8;margin:0}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;margin-top:52px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:#8788A8;
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-aside{position:static}
}
@media (max-width:991.98px){
  .article-header h1{font-size:30px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .cta-inner h2{font-size:27px}
}
@media (max-width:767.98px){
  .page-main{padding-bottom:56px}
  .breadcrumb-row{padding-top:18px}
  .article-header{padding-top:18px}
  .article-header h1{font-size:26px;line-height:1.35;margin:12px 0 14px}
  .breadcrumb-row li[aria-current]{max-width:220px}
  .section-title{font-size:23px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .related{margin-top:48px}
  .cta-band{margin-top:56px}
  .cta-inner{padding:56px 20px}
  .cta-inner h2{font-size:23px}
  .btn-brand,.btn-ghost{width:100%}
  .share-row{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;margin-top:36px}
  .site-footer{padding:52px 0 28px}
}

/* roulang page: category1 */
:root{
  --brand:#5B4BE0;
  --brand-light:#8A7CF0;
  --brand-soft:#EFEDFF;
  --aurora:#2FC6C0;
  --star:#F5B942;
  --ink:#10112A;
  --ink-2:#1B1C3D;
  --bg:#F7F6FF;
  --card:#FFFFFF;
  --line:#E6E4F5;
  --t1:#10112A;
  --t2:#3A3C58;
  --t3:#6E7090;
  --t-dark:#EDEDFB;
  --t-dark2:#A9A9C8;
  --grad:linear-gradient(120deg,#5B4BE0 0%,#8A7CF0 48%,#2FC6C0 100%);
  --r-card:20px;
  --r-big:28px;
  --r-img:16px;
  --sh1:0 2px 6px rgba(16,17,42,.05);
  --sh2:0 10px 30px rgba(16,17,42,.08);
  --sh3:0 18px 44px rgba(91,75,224,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-w:260px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t2);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
h1,h2,h3,h4,h5{margin:0;color:var(--t1);line-height:1.3;font-weight:700;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
a{color:var(--brand);text-decoration:none;transition:color 220ms var(--ease);}
a:hover{color:var(--brand-light);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--aurora);outline-offset:2px;border-radius:8px;}

/* ---------- 布局 ---------- */
.layout{display:flex;min-height:100vh;}
.content-wrap{
  margin-left:var(--nav-w);
  width:calc(100% - var(--nav-w));
  min-width:0;
  display:flex;
  flex-direction:column;
  flex:1;
}
.page-container{width:100%;max-width:1120px;margin:0 auto;padding:0 32px;}

/* ---------- 左侧导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;z-index:60;
  width:var(--nav-w);height:100vh;
  background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  padding:26px 18px 20px;
  overflow-y:auto;
}
.side-brand{padding:0 6px 20px;border-bottom:1px solid var(--line);}
.brand-link{display:flex;align-items:center;gap:10px;color:var(--t1);}
.brand-link:hover{color:var(--brand);}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:12px;
  background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(91,75,224,.28);
}
.brand-mark svg{width:21px;height:21px;color:#fff;}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.2px;}
.brand-slogan{font-size:12px;color:var(--t3);margin:10px 6px 0;letter-spacing:.02em;}

.side-menu{margin-top:18px;display:flex;flex-direction:column;gap:2px;}
.menu-group-title{
  font-size:12px;color:var(--t3);letter-spacing:.05em;
  padding:18px 14px 8px;margin:0;font-weight:600;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;
  height:44px;padding:0 14px;border-radius:12px;
  font-size:14.5px;font-weight:500;color:var(--t2);
  transition:all 220ms var(--ease);
}
.nav-item:hover{background:var(--brand-soft);color:var(--brand);transform:translateX(2px);}
.nav-item.active{
  background:var(--brand-soft);color:var(--brand);font-weight:600;
}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--grad);
}
.side-cta{
  margin-top:auto;
  background:var(--brand-soft);
  border-radius:16px;
  padding:16px;
}
.side-cta p{font-size:13px;line-height:1.7;color:var(--t2);margin-bottom:12px;}

/* ---------- 移动端顶栏 ---------- */
.mobile-topbar{display:none;}
.mobile-bar{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;padding:0 18px;background:#fff;
}
.mobile-brand{display:flex;align-items:center;gap:9px;color:var(--t1);font-weight:700;font-size:16px;}
.mobile-brand .brand-mark{width:32px;height:32px;flex:0 0 32px;border-radius:10px;}
.mobile-brand .brand-mark svg{width:18px;height:18px;}
.burger{
  width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:all 220ms var(--ease);}
.burger.active span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.burger.active span:nth-child(2){opacity:0;}
.burger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  display:none;background:#fff;border-top:1px solid var(--line);
  max-height:80vh;overflow-y:auto;padding:12px 16px 22px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer .nav-item{height:48px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:all 220ms var(--ease);
  text-decoration:none;
}
.btn-brand{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(91,75,224,.24);}
.btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 32px rgba(91,75,224,.34);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand-light);color:var(--brand);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:13.5px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  background:none;border:0;padding:0;height:auto;
  color:var(--brand);font-size:14.5px;font-weight:600;cursor:pointer;
}
.btn-text .arrow{transition:transform 220ms var(--ease);}
.btn-text:hover{color:var(--brand-light);}
.btn-text:hover .arrow{transform:translateX(3px);}

/* ---------- 通用 ---------- */
.pill{
  display:inline-flex;align-items:center;
  padding:5px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:12.5px;font-weight:600;line-height:1.6;
}
.section{padding:92px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:44px;max-width:760px;}
.section-head.between{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.h2-bar{position:relative;padding-left:18px;font-size:32px;font-weight:700;letter-spacing:-.4px;}
.h2-bar::before{
  content:"";position:absolute;left:0;top:.14em;bottom:.14em;width:4px;border-radius:4px;background:var(--grad);
}
.section-sub{margin-top:16px;font-size:16px;color:var(--t3);line-height:1.85;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--t-dark);
  padding:56px 0 132px;
}
.page-hero::before{
  content:"";position:absolute;width:620px;height:620px;left:-160px;top:-260px;border-radius:50%;
  background:radial-gradient(circle,rgba(91,75,224,.55) 0%,rgba(91,75,224,0) 68%);
}
.page-hero::after{
  content:"";position:absolute;width:520px;height:520px;right:-140px;bottom:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,198,192,.34) 0%,rgba(47,198,192,0) 70%);
}
.hero-stars{
  position:absolute;inset:0;
  background-image:
    radial-gradient(1.4px 1.4px at 14% 28%,rgba(255,255,255,.75),transparent),
    radial-gradient(1.2px 1.2px at 32% 62%,rgba(255,255,255,.55),transparent),
    radial-gradient(1.6px 1.6px at 58% 22%,rgba(255,255,255,.68),transparent),
    radial-gradient(1.2px 1.2px at 76% 52%,rgba(255,255,255,.5),transparent),
    radial-gradient(1.5px 1.5px at 88% 30%,rgba(255,255,255,.62),transparent),
    radial-gradient(1.1px 1.1px at 44% 84%,rgba(255,255,255,.45),transparent);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;}
.crumb-nav{margin-bottom:22px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0;padding:0;background:none;font-size:13px;
}
.breadcrumb-item{color:var(--t-dark2);}
.breadcrumb-item a{color:var(--t-dark2);}
.breadcrumb-item a:hover{color:#fff;}
.breadcrumb-item+.breadcrumb-item::before{content:"›";color:#5f6188;padding-right:8px;}
.breadcrumb-item.active{color:#fff;}
.page-hero .pill{background:rgba(255,255,255,.1);color:#CFC9FF;margin-bottom:18px;}
.page-hero h1{
  color:#fff;font-size:44px;font-weight:800;line-height:1.25;letter-spacing:-.5px;
  max-width:840px;
}
.hero-lead{
  margin-top:20px;max-width:760px;
  font-size:16.5px;line-height:1.9;color:#C6C6E4;
}
.stat-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.stat-badge{
  display:inline-flex;align-items:center;gap:12px;
  padding:12px 22px 12px 18px;border-radius:999px;
  border:1px solid transparent;
  background-image:linear-gradient(#161737,#161737),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.stat-dot{width:8px;height:8px;border-radius:50%;background:var(--aurora);flex:0 0 8px;}
.stat-num{font-size:22px;font-weight:800;color:#fff;line-height:1;letter-spacing:-.5px;}
.stat-label{font-size:13px;color:var(--t-dark2);line-height:1.4;}

.banner-figure{
  position:relative;z-index:5;
  margin-top:-96px;
}
.banner-frame{
  border-radius:24px;overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh2);
  background:#fff;
}
.banner-frame img{width:100%;height:308px;object-fit:cover;}

/* ---------- 交错长条卡 ---------- */
.zigzag{display:flex;flex-direction:column;gap:32px;}
.zz-item{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:40px;align-items:center;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-big);
  padding:28px;box-shadow:var(--sh1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.zz-item:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--brand-light);}
.zz-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);}
.zz-item:nth-child(even) .zz-media{order:2;}
.zz-body{padding:4px 10px;}
.zz-body h3{font-size:22px;font-weight:600;margin-bottom:12px;}
.zz-body>p{font-size:15.5px;color:var(--t2);line-height:1.85;}
.dot-list{margin:18px 0 20px;display:flex;flex-direction:column;gap:10px;}
.dot-list li{
  position:relative;padding-left:20px;font-size:14.5px;color:var(--t2);line-height:1.8;
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--aurora);
}

/* ---------- 时间线 ---------- */
.timeline{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  margin-top:8px;
}
.tl-item{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--sh1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.tl-item:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--brand-light);}
.tl-step{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);
  font-weight:800;font-size:14px;margin-bottom:16px;
}
.tl-item h3{font-size:18px;margin-bottom:8px;}
.tl-item p{font-size:14px;color:var(--t3);line-height:1.8;}

/* ---------- 表格 ---------- */
.table-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-big);
  padding:8px;box-shadow:var(--sh1);overflow-x:auto;
}
table.data-table{width:100%;border-collapse:collapse;min-width:680px;}
table.data-table th{
  background:#F3F1FF;color:var(--t1);font-size:14px;font-weight:700;
  text-align:left;padding:16px 20px;white-space:nowrap;
}
table.data-table th:first-child{border-radius:14px 0 0 14px;}
table.data-table th:last-child{border-radius:0 14px 14px 0;}
table.data-table td{
  padding:16px 20px;font-size:14.5px;color:var(--t2);
  border-bottom:1px solid var(--line);
}
table.data-table tbody tr:last-child td{border-bottom:0;}
table.data-table tbody tr:hover td{background:#FBFAFF;}

/* ---------- 人群卡 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.card-x{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--sh1);height:100%;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.card-x:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--brand-light);}
.card-x h3{font-size:19px;margin-bottom:12px;}
.card-x p{font-size:14.5px;color:var(--t3);line-height:1.85;}
.icon-badge{
  width:46px;height:46px;border-radius:14px;background:var(--brand-soft);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.icon-badge svg{width:22px;height:22px;color:var(--brand);}

/* ---------- 交叉导航 ---------- */
.cross-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.cross-card{
  display:flex;gap:20px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh1);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.cross-card:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--brand-light);}
.cross-card img{width:112px;height:112px;flex:0 0 112px;object-fit:cover;border-radius:14px;}
.cross-card h3{font-size:18px;margin:8px 0 8px;}
.cross-card p{font-size:14px;color:var(--t3);line-height:1.8;margin-bottom:10px;}

/* ---------- FAQ ---------- */
.accordion-item{
  border:0;background:var(--card);border-radius:16px !important;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh1);
}
.accordion-button{
  font-size:17px;font-weight:600;color:var(--t1);
  padding:20px 24px;background:#fff;box-shadow:none !important;
}
.accordion-button:not(.collapsed){color:var(--brand);background:var(--brand-soft);}
.accordion-button::after{
  content:"+";background-image:none !important;
  width:auto;height:auto;font-size:22px;font-weight:400;line-height:1;
  color:var(--brand);display:flex;align-items:center;justify-content:center;
  transform:none;transition:transform 220ms var(--ease);margin-left:auto;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{
  padding:20px 24px 24px;background:#F7F6FF;
  font-size:15px;color:var(--t2);line-height:1.9;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink);border-radius:var(--r-big);
  padding:60px 40px;text-align:center;
  border:1px solid transparent;
  background-image:linear-gradient(var(--ink),var(--ink)),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.cta-band::before{
  content:"";position:absolute;width:520px;height:520px;left:50%;top:-330px;transform:translateX(-50%);
  border-radius:50%;
  background:radial-gradient(circle,rgba(91,75,224,.5) 0%,rgba(91,75,224,0) 68%);
}
.cta-inner{position:relative;z-index:2;max-width:600px;margin:0 auto;}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:14px;}
.cta-band p{color:var(--t-dark2);font-size:15.5px;margin-bottom:26px;}
.cta-note{margin-top:16px;font-size:13px;color:#8b8cae;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);color:var(--t-dark2);
  padding:72px 0 26px;margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  color:#fff;font-size:17px;font-weight:700;margin-bottom:14px;
}
.footer-brand:hover{color:#fff;}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;}
.footer-brand .brand-mark svg{width:20px;height:20px;}
.site-footer p{font-size:13.5px;line-height:1.8;color:var(--t-dark2);}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{
  color:var(--t-dark2);font-size:14px;
  transition:color 220ms var(--ease),transform 220ms var(--ease);
  display:inline-block;
}
.footer-links a:hover{color:#fff;transform:translateX(3px);}
.subscribe-form{display:flex;gap:8px;margin-top:12px;}
.subscribe-form input{
  flex:1;min-width:0;height:48px;border-radius:12px;
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);color:#fff;
  padding:0 14px;font-size:14px;font-family:inherit;
}
.subscribe-form input::placeholder{color:#7e80a0;}
.subscribe-form input:focus{
  outline:none;border-color:var(--brand-light);
  box-shadow:0 0 0 3px rgba(138,124,240,.25);
}
.subscribe-form button{
  height:48px;padding:0 20px;border-radius:12px;border:0;
  background:var(--grad);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.subscribe-form button:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(91,75,224,.4);}
.form-hint{margin-top:10px;font-size:12.5px;color:#7e80a0;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7e80a0;
}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  :root{--nav-w:240px;}
  .page-hero h1{font-size:40px;}
}
@media (max-width:1199px){
  :root{--nav-w:220px;}
  .page-container{padding:0 26px;}
  .timeline{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
  .footer-grid>div:last-child{grid-column:1 / -1;}
}
@media (max-width:991px){
  .side-nav{display:none;}
  .content-wrap{margin-left:0;width:100%;}
  .mobile-topbar{
    display:block;position:sticky;top:0;z-index:70;
    box-shadow:var(--sh2);background:#fff;
  }
  .section{padding:72px 0;}
  .page-hero{padding:40px 0 116px;}
  .page-hero h1{font-size:34px;}
  .zigzag .zz-item{grid-template-columns:1fr;}
  .zz-item:nth-child(even) .zz-media{order:0;}
  .grid-3{grid-template-columns:1fr 1fr;}
  .cross-grid{grid-template-columns:1fr;}
  .banner-frame img{height:262px;}
}
@media (max-width:767px){
  .page-container{padding:0 18px;}
  .section{padding:56px 0;}
  .h2-bar{font-size:26px;}
  .page-hero{padding:34px 0 108px;}
  .page-hero h1{font-size:29px;}
  .hero-lead{font-size:15.5px;}
  .stat-row{gap:10px;}
  .stat-badge{padding:10px 16px;}
  .stat-num{font-size:19px;}
  .banner-frame img{height:210px;}
  .grid-3,.grid-2,.timeline{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-grid>div:last-child{grid-column:auto;}
  .zz-item{padding:20px;}
  .card-x{padding:22px;}
  .cross-card{flex-direction:column;}
  .cross-card img{width:100%;height:170px;flex:0 0 auto;}
  .cta-band{padding:44px 22px;}
  .cta-band h2{font-size:23px;}
  .btn{width:100%;}
  .btn-text{width:auto;}
  .subscribe-form{flex-wrap:wrap;}
  .subscribe-form input{width:100%;flex:1 1 100%;}
  .subscribe-form button{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .breadcrumb{font-size:12.5px;}
}

/* roulang page: category2 */
:root{
  --brand:#5B4BE0;
  --brand-light:#8A7CF0;
  --brand-tint:#EFEDFF;
  --aurora:#2FC6C0;
  --gold:#F5B942;
  --ink:#10112A;
  --ink-2:#1B1C3D;
  --bg:#F7F6FF;
  --surface:#FFFFFF;
  --line:#E6E4F5;
  --text:#3A3C58;
  --muted:#6E7090;
  --on-dark:#EDEDFB;
  --on-dark-muted:#A9A9C8;
  --warn:#E4572E;
  --grad:linear-gradient(120deg,#5B4BE0 0%,#8A7CF0 48%,#2FC6C0 100%);
  --r-card:20px;
  --r-big:28px;
  --r-img:16px;
  --r-pill:999px;
  --r-sm:12px;
  --sh-1:0 2px 6px rgba(16,17,42,.05);
  --sh-2:0 10px 30px rgba(16,17,42,.08);
  --sh-hover:0 18px 44px rgba(91,75,224,.20);
  --ease:220ms cubic-bezier(.2,.7,.3,1);
  --nav-w:260px;
  --content-max:1040px;
}
@media (max-width:1399.98px){:root{--nav-w:240px}}
@media (max-width:1199.98px){:root{--nav-w:220px}}
@media (max-width:991.98px){:root{--nav-w:0px}}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--aurora)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--aurora);outline-offset:2px;border-radius:6px}

.skip-link{
  position:absolute;left:16px;top:-60px;z-index:2000;
  background:var(--brand);color:#fff;padding:10px 18px;border-radius:var(--r-pill);
  font-size:14px;transition:top var(--ease);
}
.skip-link:focus{top:16px;color:#fff}

/* ---------- 左侧导航 ---------- */
.side-nav{
  position:fixed;inset:0 auto 0 0;width:var(--nav-w);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:1030;
  transition:transform var(--ease);
}
.nav-brand-area{padding:28px 22px 20px;border-bottom:1px solid var(--line)}
.nav-brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:18px;letter-spacing:-.3px}
.nav-brand:hover{color:var(--brand)}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  background:var(--grad);display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(91,75,224,.28);
}
.brand-mark svg{width:20px;height:20px}
.nav-tagline{margin-top:10px;font-size:12px;color:var(--muted);letter-spacing:.04em}
.nav-main{flex:1 1 auto;overflow-y:auto;padding:18px 16px 20px}
.nav-group-title{
  font-size:12px;color:var(--muted);letter-spacing:.05em;
  padding:18px 14px 8px;text-transform:none;font-weight:600;
}
.nav-link-item{
  position:relative;display:flex;align-items:center;
  height:44px;padding:0 12px 0 14px;border-radius:12px;
  font-size:15px;color:var(--muted);font-weight:500;
  transition:background var(--ease),color var(--ease),padding var(--ease);
}
.nav-link-item:hover{background:#F3F2FD;color:var(--brand);padding-left:16px}
.nav-link-item.active{background:var(--brand-tint);color:var(--brand);font-weight:600}
.nav-link-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:3px;background:var(--grad);
}
.nav-cta-card{
  margin:12px 16px 20px;padding:16px;border-radius:16px;
  background:var(--brand-tint);border:1px solid #E1DCFB;
}
.nav-cta-card p{font-size:13px;line-height:1.7;color:var(--text);margin-bottom:12px}
.nav-cta-card .btn{width:100%;font-size:13px;padding:9px 10px}

/* ---------- 移动端顶部导航 ---------- */
.mobile-topbar{display:none;position:sticky;top:0;z-index:1040;background:var(--surface);box-shadow:var(--sh-2)}
.mobile-topbar .navbar{padding:10px 0}
.mobile-topbar .navbar-brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:17px;color:var(--ink)}
.mobile-topbar .navbar-brand .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:10px}
.mobile-topbar .navbar-brand .brand-mark svg{width:18px;height:18px}
.navbar-toggler{border:1px solid var(--line);border-radius:12px;padding:8px 10px;background:#fff;box-shadow:none!important}
.navbar-toggler:focus{box-shadow:0 0 0 3px var(--brand-tint)!important;border-color:var(--brand)}
.toggler-icon-custom{display:block;width:20px;height:14px;position:relative}
.toggler-icon-custom span{position:absolute;left:0;right:0;height:2px;border-radius:2px;background:var(--ink);transition:var(--ease)}
.toggler-icon-custom span:nth-child(1){top:0}
.toggler-icon-custom span:nth-child(2){top:6px}
.toggler-icon-custom span:nth-child(3){top:12px}
.navbar-toggler[aria-expanded="true"] .toggler-icon-custom span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.navbar-toggler[aria-expanded="true"] .toggler-icon-custom span:nth-child(2){opacity:0}
.navbar-toggler[aria-expanded="true"] .toggler-icon-custom span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-panel{
  max-height:80vh;overflow-y:auto;border-top:1px solid var(--line);
  background:var(--surface);padding:10px 4px 18px;
}
.mobile-panel .nav-group-title{padding:14px 12px 6px}
.mobile-panel .nav-link-item{height:48px}

/* ---------- 布局 ---------- */
.site-shell{margin-left:var(--nav-w)}
.page-container{max-width:var(--content-max);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--surface{background:var(--surface)}
.section--tint{background:var(--bg)}
.section-head{margin-bottom:40px}
.section-title{
  position:relative;padding-left:16px;font-size:32px;font-weight:700;
  letter-spacing:-.4px;line-height:1.3;
}
.section-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:4px;background:var(--grad);
}
.section-sub{margin-top:14px;font-size:16px;color:var(--muted);max-width:720px}

/* ---------- 按钮 ---------- */
.btn{
  border-radius:var(--r-pill);font-weight:600;border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-brand{
  background:var(--grad);color:#fff;border:0;height:48px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 28px;font-size:16px;box-shadow:0 8px 22px rgba(91,75,224,.26);
}
.btn-brand:hover,.btn-brand:focus{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(91,75,224,.34)}
.btn-ghost{
  background:#fff;color:var(--brand);border:1px solid var(--line);
  height:48px;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 26px;font-size:16px;
}
.btn-ghost:hover,.btn-ghost:focus{color:var(--brand);border-color:var(--brand-light);background:var(--brand-tint)}
.btn-sm{padding:8px 16px;height:auto;font-size:13px}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);
  font-weight:600;font-size:15px;padding:0;background:none;border:0;
}
.btn-link-arrow .arrow{transition:transform var(--ease)}
.btn-link-arrow:hover .arrow{transform:translateX(3px)}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;color:var(--on-dark);overflow:hidden;
  background-color:var(--ink);
  background-image:linear-gradient(180deg,rgba(16,17,42,.86) 0%,rgba(16,17,42,.94) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:56px 0 72px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(520px 320px at 10% 12%,rgba(91,75,224,.42),transparent 66%),
    radial-gradient(440px 300px at 90% 86%,rgba(47,198,192,.26),transparent 68%);
}
.star-field{position:absolute;inset:0;pointer-events:none;opacity:.85;
  background-image:
    radial-gradient(1.6px 1.6px at 18% 32%,rgba(255,255,255,.75),transparent 100%),
    radial-gradient(1.4px 1.4px at 42% 16%,rgba(255,255,255,.55),transparent 100%),
    radial-gradient(1.8px 1.8px at 68% 44%,rgba(255,255,255,.6),transparent 100%),
    radial-gradient(1.3px 1.3px at 84% 22%,rgba(255,255,255,.5),transparent 100%),
    radial-gradient(1.5px 1.5px at 30% 74%,rgba(255,255,255,.45),transparent 100%),
    radial-gradient(1.4px 1.4px at 92% 66%,rgba(255,255,255,.4),transparent 100%);
}
.hero-inner{position:relative;z-index:2}
.breadcrumb-line{font-size:13px;color:var(--on-dark-muted);margin-bottom:22px}
.breadcrumb-line ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb-line a{color:var(--on-dark-muted)}
.breadcrumb-line a:hover{color:#fff}
.breadcrumb-line .sep{opacity:.55}
.breadcrumb-line .current{color:#fff}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--brand);
  background:var(--brand-tint);border-radius:var(--r-pill);padding:5px 14px;
}
.chip--dark{
  background:rgba(138,124,240,.16);color:#CFC7FF;border:1px solid rgba(138,124,240,.36);
}
.hero-title{
  margin-top:18px;font-size:46px;font-weight:800;line-height:1.25;
  letter-spacing:-.5px;color:#fff;max-width:840px;
}
.hero-lead{margin-top:20px;font-size:17px;line-height:1.9;color:var(--on-dark-muted);max-width:760px}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-actions .btn-ghost{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.22);color:#fff}
.hero-actions .btn-ghost:hover{background:rgba(255,255,255,.13);border-color:rgba(255,255,255,.4);color:#fff}
.hero-stats{margin-top:44px;display:flex;flex-wrap:wrap;gap:16px}
.stat-badge{
  display:inline-flex;flex-direction:column;gap:4px;
  padding:14px 22px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(138,124,240,.45);
  min-width:150px;
}
.stat-num{font-size:26px;font-weight:800;color:#fff;line-height:1.15;display:flex;align-items:baseline;gap:3px}
.stat-unit{font-size:13px;font-weight:600;color:var(--aurora)}
.stat-label{font-size:13px;color:var(--on-dark-muted)}

/* ---------- 对比表 ---------- */
.matrix-wrap{
  overflow-x:auto;border-radius:var(--r-big);background:#fff;
  border:1px solid var(--line);box-shadow:var(--sh-2);
}
table.matrix{width:100%;min-width:780px;border-collapse:collapse}
table.matrix th,table.matrix td{
  padding:16px 22px;text-align:left;font-size:15px;
  border-bottom:1px solid var(--line);color:var(--text);
}
table.matrix thead th{background:var(--brand-tint);color:var(--ink);font-weight:700;white-space:nowrap}
table.matrix td:first-child{font-weight:600;color:var(--ink);white-space:nowrap}
table.matrix tbody tr:last-child td{border-bottom:0}
table.matrix tbody tr{transition:background var(--ease)}
table.matrix tbody tr:hover{background:#FBFAFF}
.matrix-note{margin-top:16px;font-size:13px;color:var(--muted)}

/* ---------- 协同能力卡 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cap-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--brand-light)}
.cap-icon{
  width:44px;height:44px;border-radius:14px;display:inline-flex;
  align-items:center;justify-content:center;background:var(--brand-tint);
  color:var(--brand);margin-bottom:18px;
}
.cap-icon svg{width:22px;height:22px}
.cap-card h3{font-size:21px;font-weight:600;margin-bottom:12px}
.cap-list li{
  position:relative;padding-left:20px;font-size:15px;line-height:1.85;
  color:var(--text);margin-bottom:8px;
}
.cap-list li:last-child{margin-bottom:0}
.cap-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;
  border-radius:50%;background:var(--aurora);
}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step-item{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px 24px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--brand-light)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-weight:800;font-size:15px;
  margin-bottom:16px;
}
.step-item h3{font-size:18px;font-weight:600;margin-bottom:10px}
.step-item p{font-size:14px;line-height:1.8;color:var(--muted)}
.step-item::after{
  content:"";position:absolute;right:-14px;top:44px;width:14px;height:1px;
  background:var(--line);
}
.step-item:last-child::after{display:none}

/* ---------- 场景 ---------- */
.scene-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.scene-list{display:flex;flex-direction:column;gap:14px}
.scene-row{
  display:flex;gap:16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.scene-row:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--brand-light)}
.scene-index{
  flex:0 0 40px;height:40px;border-radius:12px;background:var(--brand-tint);
  color:var(--brand);display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;
}
.scene-row h3{font-size:18px;font-weight:600;margin-bottom:6px}
.scene-row p{font-size:14px;line-height:1.8;color:var(--muted)}
.scene-media img{
  width:100%;border-radius:var(--r-big);object-fit:cover;
  box-shadow:var(--sh-2);
}
.scene-media figcaption{margin-top:12px;font-size:13px;color:var(--muted);text-align:center}

/* ---------- FAQ ---------- */
.accordion-item{
  border:0;background:#fff;border-radius:16px;margin-bottom:12px;
  box-shadow:var(--sh-1);overflow:hidden;
}
.accordion-button{
  background:#fff;color:var(--ink);font-size:17px;font-weight:600;
  padding:20px 22px;border-radius:16px!important;box-shadow:none!important;
  line-height:1.6;
}
.accordion-button:not(.collapsed){color:var(--brand);background:#fff}
.accordion-button:focus{box-shadow:0 0 0 3px var(--brand-tint)!important;z-index:3}
.accordion-button::after{
  content:"";width:16px;height:16px;flex:0 0 16px;background-image:none;
  background:
    linear-gradient(var(--brand),var(--brand)) center/12px 2px no-repeat,
    linear-gradient(var(--brand),var(--brand)) center/2px 12px no-repeat;
  transition:transform var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-body{
  background:var(--bg);padding:20px 22px;font-size:16px;
  line-height:1.85;color:var(--text);border-radius:0 0 16px 16px;
}

/* ---------- 交叉导航 ---------- */
.cross-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.cross-card{
  display:flex;gap:20px;align-items:center;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-big);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.cross-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--brand-light)}
.cross-card img{
  width:110px;height:92px;flex:0 0 110px;border-radius:var(--r-img);object-fit:cover;
}
.cross-card h3{font-size:19px;font-weight:600;margin-bottom:8px}
.cross-card p{font-size:14px;line-height:1.75;color:var(--muted);margin-bottom:10px}

/* ---------- CTA 带 ---------- */
.cta-section{padding:0 0 96px}
.cta-inner{
  position:relative;overflow:hidden;max-width:700px;margin:0 auto;
  text-align:center;background:var(--ink);
  border:1px solid rgba(138,124,240,.45);
  border-radius:var(--r-big);padding:56px 40px;
}
.cta-inner::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(360px 220px at 20% 10%,rgba(91,75,224,.45),transparent 68%),
    radial-gradient(300px 200px at 85% 90%,rgba(47,198,192,.24),transparent 70%);
}
.cta-inner > *{position:relative;z-index:2}
.cta-inner h2{color:#fff;font-size:30px;font-weight:700;line-height:1.35;letter-spacing:-.3px}
.cta-inner p{margin-top:16px;font-size:15px;color:var(--on-dark-muted);line-height:1.85}
.cta-inner .btn-brand{margin-top:28px}
.cta-hint{margin-top:14px;font-size:13px;color:var(--on-dark-muted)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--on-dark);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.5fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px}
.footer-brand:hover{color:#fff}
.site-footer p{font-size:14px;line-height:1.8;color:var(--on-dark-muted);margin-top:16px}
.site-footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--on-dark-muted);font-size:14px;display:inline-block;transition:color var(--ease),transform var(--ease)}
.footer-links a:hover{color:#fff;transform:translateX(3px)}
.subscribe-form{display:flex;gap:10px;margin-top:16px}
.subscribe-form input{
  flex:1 1 auto;min-width:0;height:48px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  color:#fff;padding:0 14px;font-size:14px;
}
.subscribe-form input::placeholder{color:#8C8CB5}
.subscribe-form input:focus{outline:none;border-color:var(--brand-light);box-shadow:0 0 0 3px rgba(138,124,240,.25)}
.subscribe-form button{
  height:48px;padding:0 20px;border:0;border-radius:var(--r-sm);
  background:var(--grad);color:#fff;font-weight:600;font-size:14px;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease);
}
.subscribe-form button:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(91,75,224,.32)}
.form-hint{font-size:12px!important;color:#8C8CB5!important;margin-top:10px!important}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--on-dark-muted);
}

/* ---------- Bootstrap 组件覆盖 ---------- */
.card{border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1)}
.badge{background:var(--brand-tint);color:var(--brand);border-radius:var(--r-pill);font-weight:600;padding:5px 12px;font-size:12px}
.list-group-item{border-color:var(--line);font-size:15px;color:var(--text);background:#fff}
.form-control,.form-select{
  height:48px;border-radius:var(--r-sm);border:1px solid var(--line);
  color:var(--text);font-size:15px;padding:0 14px;
}
.form-control:focus,.form-select:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-tint)}
.form-control.is-invalid,.form-select.is-invalid{border-color:var(--warn);box-shadow:0 0 0 3px rgba(228,87,46,.14)}
.dropdown-menu{border:1px solid var(--line);border-radius:var(--r-sm);box-shadow:var(--sh-2);padding:8px}
.dropdown-item{border-radius:8px;font-size:15px;color:var(--text);padding:9px 14px}
.dropdown-item:hover,.dropdown-item:focus{background:var(--brand-tint);color:var(--brand)}
.navbar{--bs-navbar-padding-y:0}
.container-fluid{padding-left:20px;padding-right:20px}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .hero-title{font-size:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-grid > div:last-child{grid-column:1 / -1}
}
@media (max-width:991.98px){
  .side-nav{display:none}
  .mobile-topbar{display:block}
  .site-shell{margin-left:0}
  body{font-size:16px}
  .section{padding:72px 0}
  .cta-section{padding-bottom:72px}
  .page-hero{padding:40px 0 56px}
  .hero-title{font-size:34px}
  .section-title{font-size:28px}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step-item:nth-child(2)::after{display:none}
  .scene-layout{grid-template-columns:1fr;gap:32px}
  .cross-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid > div:last-child{grid-column:1 / -1}
}
@media (max-width:639.98px){
  .page-container{padding:0 20px}
  .section{padding:56px 0}
  .cta-section{padding-bottom:56px}
  .hero-title{font-size:28px;letter-spacing:-.2px}
  .hero-lead{font-size:15px}
  .section-title{font-size:24px}
  .cap-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .step-item::after{display:none}
  .cap-card,.step-item{padding:20px}
  .hero-stats{gap:12px}
  .stat-badge{min-width:132px;padding:12px 18px}
  .stat-num{font-size:22px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .cross-card{flex-direction:column;align-items:flex-start}
  .cross-card img{width:100%;height:150px;flex:none}
  .cta-inner{padding:36px 22px}
  .cta-inner h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .subscribe-form{flex-direction:column}
  .subscribe-form button{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
}