:root{
  --brand:#1668E3;
  --brand-2:#3B82F6;
  --brand-d:#0E2A52;
  --accent:#60A5FA;
  --accent-2:#93C5FD;
  --dark:#0E2A52;
  --dark-2:#14477F;
  --dark-3:#0A1E3C;
  --ink:#16202B;
  --ink-2:#5A6879;
  --ink-3:#7A8794;
  --line:#DEE7F3;
  --bg:#F5F8FC;
  --white:#fff;
  --radius:16px;
  --shadow:0 2px 12px rgba(14,42,82,.07);
  --shadow-lg:0 12px 40px rgba(14,42,82,.14);
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--bg);color:var(--ink);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ============ 顶栏 ============ */
.navbar{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.navbar .container{display:flex;align-items:center;height:72px;gap:32px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand img{height:52px;width:auto}
.brand-txt{line-height:1.25}
.brand-txt b{font-size:19px;letter-spacing:2px;display:block;font-weight:800}
.brand-txt span{font-size:12px;color:var(--ink-3);letter-spacing:.3px}
.navlinks{display:flex;gap:4px;margin-left:auto;align-items:center}
.navlinks a{
  padding:9px 14px;border-radius:10px;font-size:15px;color:var(--ink-2);font-weight:500;transition:.18s;
}
.navlinks a:hover{background:#EAF1FE;color:var(--brand)}
.navlinks a.active{color:var(--brand);background:#EAF1FE;font-weight:600}
.navlinks a .ext{
  font-style:normal;font-size:11px;margin-left:3px;opacity:.55;font-weight:400;
}
.navlinks a:hover .ext{opacity:1}
.nav-cta{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff!important;
  padding:10px 20px!important;border-radius:999px!important;font-weight:700!important;
  box-shadow:0 6px 18px rgba(22,104,227,.30);
}
.nav-cta:hover{background:linear-gradient(135deg,var(--brand-d),var(--brand));color:#fff!important;transform:translateY(-1px)}
.burger{display:none;margin-left:auto;font-size:22px;background:none;border:none;color:var(--ink);cursor:pointer}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,var(--dark-3) 0%,var(--dark) 40%,var(--dark-2) 70%,#2E6FD6 118%);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(900px 420px at 82% 8%,rgba(96,165,250,.24),transparent 62%);
}
.hero .container{position:relative;z-index:2;padding:88px 24px 76px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.3);padding:6px 14px;border-radius:999px;font-size:13px;margin-bottom:22px;
}
.hero h1{font-size:46px;line-height:1.28;font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.hero h1 em{font-style:normal;color:#BFDBFE;border-bottom:4px solid rgba(147,197,253,.45)}
.hero-sub{font-size:18px;color:rgba(255,255,255,.9);max-width:620px;margin-bottom:32px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:999px;
  font-weight:600;font-size:16px;border:1px solid transparent;transition:.2s;cursor:pointer;
}
.btn-white{background:#fff;color:var(--brand-d);box-shadow:0 10px 26px rgba(0,0,0,.18)}
.btn-white:hover{transform:translateY(-2px)}
.btn-outline{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.55)}
.btn-outline:hover{background:rgba(255,255,255,.2)}
.btn-red{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:600;box-shadow:0 10px 26px rgba(22,104,227,.30)}
.btn-red:hover{transform:translateY(-2px)}

.hero-stats{display:flex;gap:34px;flex-wrap:wrap;padding-top:24px;border-top:1px solid rgba(255,255,255,.22)}
.hero-stats div b{display:block;font-size:28px;font-weight:800;line-height:1.2;color:#BFDBFE}
.hero-stats div span{font-size:13px;color:rgba(255,255,255,.82)}

/* 名片卡 */
.hero-card{
  background:#fff;color:var(--ink);border-radius:20px;padding:28px;box-shadow:var(--shadow-lg);
}
.hero-card h3{font-size:17px;margin-bottom:4px}
.hero-card .cap{font-size:13px;color:var(--ink-3);margin-bottom:18px}
.mini-row{display:flex;justify-content:space-between;align-items:center;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px}
.mini-row:last-child{border-bottom:none}
.mini-row b{color:var(--brand);font-size:16px}
.mini-note{margin-top:16px;background:#F0F6FE;border:1px solid #CFE0FA;border-radius:12px;padding:12px 14px;font-size:13px;color:#14477F;line-height:1.6}

/* ============ 区块 ============ */
.section{padding:84px 0}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-tag{color:var(--brand);font-size:14px;font-weight:700;letter-spacing:2px;margin-bottom:10px}
.sec-head h2{font-size:34px;font-weight:800;line-height:1.35;letter-spacing:-.4px}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:17px}
.center{text-align:center;margin-left:auto;margin-right:auto}
.center p{max-width:720px;margin-left:auto;margin-right:auto}

/* 卡片网格 */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow);transition:.22s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#B9D3FB}
.card .icon{
  width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#E7F0FE,#D3E4FD);color:var(--brand);font-size:20px;font-weight:800;margin-bottom:16px;
}
.card h4{font-size:18px;margin-bottom:8px;font-weight:700}
.card p{color:var(--ink-2);font-size:15px}
.card .num{font-size:13px;color:var(--brand);font-weight:700;letter-spacing:1px;margin-bottom:6px}

/* 对比表 */
.compare{display:grid;grid-template-columns:1fr 56px 1fr;gap:0;align-items:stretch;margin-top:8px}
.cmp-box{border-radius:var(--radius);padding:26px;border:1px solid var(--line);background:#fff}
.cmp-box.bad{background:#F4F6F9}
.cmp-box.good{border-color:#B9D3FB;box-shadow:0 8px 30px rgba(22,104,227,.13)}
.cmp-box h4{font-size:18px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.cmp-box.bad h4{color:var(--ink-3)}
.cmp-box.good h4{color:var(--brand)}
.cmp-box ul{list-style:none}
.cmp-box li{padding:9px 0 9px 22px;position:relative;font-size:15px;color:var(--ink-2);border-bottom:1px dashed var(--line)}
.cmp-box li:last-child{border-bottom:none}
.cmp-box li::before{position:absolute;left:0;top:9px;font-weight:700}
.cmp-box.bad li::before{content:"×";color:#9CA3AF}
.cmp-box.good li::before{content:"✓";color:var(--brand)}
.cmp-mid{display:flex;align-items:center;justify-content:center;color:var(--ink-3);font-size:22px}

/* 流程时间轴 */
.steps{position:relative;margin-top:10px}
.step{display:grid;grid-template-columns:72px 1fr;gap:22px;padding-bottom:30px;position:relative}
.step:not(:last-child)::before{
  content:"";position:absolute;left:35px;top:56px;bottom:0;width:2px;background:linear-gradient(180deg,var(--brand),var(--accent));opacity:.45;
}
.step-no{
  width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;
  box-shadow:0 8px 22px rgba(22,104,227,.28);
}
.step-body{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;box-shadow:var(--shadow)}
.step-body h4{font-size:19px;margin-bottom:8px}
.step-body p{color:var(--ink-2);font-size:15px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip{background:#EAF1FE;color:var(--brand);font-size:13px;padding:5px 12px;border-radius:999px;border:1px solid #C7DDFA}

/* 价格表 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.price{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px;text-align:center;
  box-shadow:var(--shadow);position:relative;transition:.22s;
}
.price:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.price.hot{border-color:var(--brand);box-shadow:0 12px 34px rgba(22,104,227,.18)}
.price .badge{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--brand);color:#fff;font-weight:600;
  font-size:12px;padding:4px 14px;border-radius:999px;letter-spacing:1px;
}
.price h4{font-size:19px;margin-bottom:6px}
.price .unit{font-size:15px;color:var(--ink-3)}
.price .big{font-size:44px;font-weight:800;color:var(--brand);line-height:1.2;margin:10px 0 4px}
.price .big small{font-size:16px;font-weight:600;color:var(--ink-3)}
.price ul{list-style:none;margin:18px 0 22px;text-align:left}
.price li{padding:7px 0 7px 20px;position:relative;font-size:14.5px;color:var(--ink-2)}
.price li::before{content:"✓";position:absolute;left:0;color:var(--brand);font-weight:700}

/* 表格 */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;min-width:640px}
th,td{padding:14px 18px;text-align:left;font-size:15px;border-bottom:1px solid var(--line)}
th{background:#EAF1FE;color:var(--brand-d);font-weight:700;font-size:14px;white-space:nowrap}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:#F8FBFF}
td.num{color:var(--brand);font-weight:700}

/* 折叠问答 */
.faq{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:none}
.faq summary{
  padding:20px 24px;cursor:pointer;font-weight:600;font-size:17px;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand);font-size:22px;font-weight:700;flex:0 0 auto}
.faq details[open] summary::after{content:"−"}
.faq details[open] summary{background:#F5F9FF;color:var(--brand-d)}
.faq .ans{padding:0 24px 22px;color:var(--ink-2);font-size:15.5px}
.faq .ans b{color:var(--ink)}

/* 协议墙 */
.tagwall{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.tagwall span{
  background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 14px;font-size:13.5px;
  color:var(--ink-2);box-shadow:0 1px 3px rgba(0,0,0,.04);
}
.tagwall span b{color:var(--brand)}

/* 锚点跳转：为 sticky 顶栏（72px）预留空间，避免标题被遮住 */
[id]{scroll-margin-top:92px}

/* ============ 小程序区块 ============ */
.miniapp{
  display:grid;grid-template-columns:280px 1fr;gap:44px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:22px;padding:38px;
  box-shadow:var(--shadow);
}
.ma-qr{text-align:center}
.ma-frame{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;
  box-shadow:0 4px 16px rgba(14,42,82,.08);display:inline-block;
}
.ma-frame img{width:200px;height:200px;display:block;border-radius:8px;image-rendering:auto}
.ma-tip{margin-top:16px}
.ma-tip b{display:block;font-size:16px;font-weight:700;color:var(--ink);margin-bottom:4px}
.ma-tip span{font-size:13px;color:var(--ink-3);line-height:1.6}
.ma-body .sec-tag{margin-bottom:8px}
.ma-body h2{font-size:30px;font-weight:800;line-height:1.35;letter-spacing:-.4px;margin-bottom:12px}
.ma-body>p{color:var(--ink-2);font-size:16.5px;margin-bottom:22px}
.ma-body>p b{color:var(--ink)}
.ma-fn{gap:0 26px;margin-bottom:22px}
.ma-fn>div{
  display:flex;flex-direction:column;gap:2px;padding:11px 0 11px 16px;
  border-bottom:1px dashed var(--line);position:relative;
}
.ma-fn>div::before{
  content:"";position:absolute;left:0;top:19px;width:6px;height:6px;border-radius:50%;
  background:var(--brand);opacity:.55;
}
.ma-fn b{font-size:15px;font-weight:700;color:var(--ink)}
.ma-fn span{font-size:13.5px;color:var(--ink-3);line-height:1.55}
.ma-plat{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.ma-label{font-size:13px;color:var(--ink-3);white-space:nowrap}
.ma-plat .chips{margin-top:0}
@media(max-width:960px){
  .miniapp{grid-template-columns:1fr;gap:28px;padding:28px}
  .ma-body h2{font-size:25px}
  .ma-fn{grid-template-columns:1fr}
}
@media(max-width:640px){
  .miniapp{padding:22px}
  .ma-plat{align-items:flex-start}
}

/* CTA 条（白底 · 无背景色） */
.cta-band{
  background:#fff;color:var(--ink);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:64px 0;text-align:center;
}
.cta-band h2{font-size:32px;font-weight:800;margin-bottom:12px;color:var(--ink)}
.cta-band p{color:var(--ink-2);margin-bottom:28px;font-size:17px}
/* 白底上按钮改为主色实心，避免白底白按钮不可见 */
.cta-band .btn-white{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
  box-shadow:0 10px 26px rgba(22,104,227,.26);
}
.cta-band .btn-white:hover{transform:translateY(-2px)}
.phone-big{font-size:32px;font-weight:800;letter-spacing:1px;margin-bottom:6px;color:var(--brand)}
/* 白底 CTA 上的次级按钮：描边深墨色，避免白底白字 */
.btn-ghost-dark{
  background:#fff;color:var(--ink);border:1px solid var(--line);box-shadow:0 1px 3px rgba(14,42,82,.06);
}
.btn-ghost-dark:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}

/* 页脚 */
.footer{background:var(--dark-3);color:#B7C3D2;padding:56px 0 28px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.10)}
.footer h5{color:#fff;font-size:16px;margin-bottom:16px}
.footer ul{list-style:none}
.footer li{padding:5px 0;color:#93A2B5}
.footer li:hover{color:#fff}
.footer .f-brand img{height:52px;background:#fff;border-radius:10px;padding:6px;margin-bottom:16px}
.footer .f-brand p{color:#8F9FB2;max-width:340px;line-height:1.7}
.footer-btm{padding-top:22px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:#78889C;font-size:13.5px}

/* 面包屑 */
.crumb{padding:26px 0 0;font-size:14px;color:var(--ink-3)}
.crumb a:hover{color:var(--brand)}
.page-head{padding:14px 0 54px}
.page-head h1{font-size:38px;font-weight:800;letter-spacing:-.4px;margin-bottom:12px}
.page-head p{color:var(--ink-2);font-size:17px;max-width:760px}

/* 目录列表 */
.chapters{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px;margin-top:6px}
.chapters li{list-style:none;padding:11px 0;border-bottom:1px dashed var(--line);font-size:15px;display:flex;gap:12px}
.chapters li b{color:var(--brand);flex:0 0 34px;font-weight:700}

.note{
  background:#F0F6FE;border:1px solid #CFE0FA;border-radius:14px;padding:18px 22px;color:#14477F;font-size:15px;line-height:1.75;
}
.note b{color:#0E2A52}

.hl{color:var(--brand);font-weight:700}

@media(max-width:960px){
  .hero-grid,.g4,.price-grid,.footer-grid{grid-template-columns:1fr 1fr}
  .g3{grid-template-columns:1fr 1fr}
  .chapters{grid-template-columns:1fr}
  .hero h1{font-size:34px}
  .compare{grid-template-columns:1fr;gap:18px}
  .cmp-mid{transform:rotate(90deg)}
  .navlinks{display:none}
  .navlinks.open{display:flex;flex-direction:column;position:absolute;top:72px;left:0;right:0;background:#fff;padding:12px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .burger{display:block}
}
@media(max-width:640px){
  .hero-grid,.g2,.g3,.g4,.price-grid,.footer-grid{grid-template-columns:1fr}
  .hero .container{padding:56px 24px}
  .section{padding:56px 0}
  .sec-head h2{font-size:27px}
  .page-head h1{font-size:29px}
  .step{grid-template-columns:56px 1fr;gap:14px}
  .step-no{width:56px;height:56px;font-size:18px}
  .step:not(:last-child)::before{left:27px;top:44px}
}

/* 滚动入场（无 JS 时直接可见，不做隐藏） */
.js [data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.js [data-reveal].in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .js [data-reveal]{opacity:1;transform:none;transition:none}
}