/*
 * 分账8纯静态官网样式
 * 域名：www.fenzhang8.cn
 * 页面结构、样式与交互代码均已分离。
 */
:root {
  --bg: #f5f8fc;
  --surface: #ffffff;
  --surface-soft: #eef5ff;
  --ink: #10213a;
  --muted: #617089;
  --line: #dce5f1;
  --primary: #1769e0;
  --primary-deep: #0b4fb8;
  --secondary: #0ba7a5;
  --accent: #ffb547;
  --success: #11845b;
  --danger: #c93b51;
  --shadow: 0 18px 50px rgba(21, 48, 88, .11);
  --shadow-sm: 0 10px 28px rgba(21, 48, 88, .08);
  --radius: 22px;
  --radius-sm: 14px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.container { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 999; padding: 10px 16px; background: var(--ink); color: #fff; border-radius: 10px; }
.skip-link:focus { top: 16px; }

.announcement { background: #0e2039; color: #dce8fb; font-size: 13px; }
.announcement .container { min-height: 38px; display: flex; align-items: center; justify-content: center; gap: 10px; text-align: center; }
.announcement-dot { width: 8px; height: 8px; border-radius: 50%; background: #43d7a2; box-shadow: 0 0 0 5px rgba(67, 215, 162, .14); }

.site-header { position: sticky; top: 0; z-index: 80; background: rgba(255,255,255,.92); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(220,229,241,.85); }
.navbar { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.brand img { width: 42px; height: 42px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-title { font-size: 20px; font-weight: 800; letter-spacing: .02em; }
.brand-subtitle { margin-top: 4px; font-size: 11px; color: var(--muted); }
.nav-links { display: flex; align-items: center; gap: 7px; }
.nav-links a { padding: 10px 13px; border-radius: 10px; font-size: 15px; color: #43536c; font-weight: 600; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); background: var(--surface-soft); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.menu-toggle { display: none; border: 0; width: 42px; height: 42px; border-radius: 12px; background: var(--surface-soft); color: var(--ink); }
.menu-toggle span { display: block; width: 20px; height: 2px; margin: 4px auto; background: currentColor; border-radius: 2px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 20px; border: 1px solid transparent; border-radius: 12px; font-weight: 700; transition: .2s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--primary), var(--primary-deep)); box-shadow: 0 10px 24px rgba(23,105,224,.25); }
.btn-primary:hover { box-shadow: 0 14px 30px rgba(23,105,224,.32); }
.btn-secondary { color: var(--primary); background: #fff; border-color: #bcd1ef; }
.btn-secondary:hover { background: var(--surface-soft); }
.btn-dark { color: #fff; background: var(--ink); }
.btn-small { min-height: 38px; padding: 0 15px; border-radius: 10px; font-size: 14px; }
.btn-block { width: 100%; }

.hero { position: relative; overflow: hidden; background: linear-gradient(155deg, #f8fbff 0%, #edf5ff 55%, #effbf9 100%); border-bottom: 1px solid var(--line); }
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 50%; filter: blur(1px); pointer-events: none; }
.hero::before { width: 420px; height: 420px; right: -120px; top: -160px; background: radial-gradient(circle, rgba(23,105,224,.16), rgba(23,105,224,0) 68%); }
.hero::after { width: 340px; height: 340px; left: -180px; bottom: -170px; background: radial-gradient(circle, rgba(11,167,165,.15), rgba(11,167,165,0) 70%); }
.hero-grid { position: relative; z-index: 2; min-height: 660px; display: grid; grid-template-columns: 1.02fr .98fr; align-items: center; gap: 56px; padding: 84px 0 78px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; padding: 7px 12px; border: 1px solid #c9dafa; border-radius: 999px; background: rgba(255,255,255,.72); color: var(--primary-deep); font-size: 13px; font-weight: 800; }
.eyebrow i { width: 8px; height: 8px; background: var(--secondary); border-radius: 50%; }
.hero h1, .page-hero h1 { margin: 0; font-size: clamp(40px, 5vw, 64px); line-height: 1.14; letter-spacing: -.035em; }
.hero h1 span { color: var(--primary); }
.hero-lead { max-width: 650px; margin: 22px 0 0; color: #4b5f7e; font-size: 19px; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-note { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 28px; color: var(--muted); font-size: 13px; }
.hero-note span { display: inline-flex; align-items: center; gap: 7px; }
.hero-note span::before { content: "✓"; display: grid; place-items: center; width: 19px; height: 19px; border-radius: 50%; color: var(--success); background: #dcf5eb; font-size: 12px; font-weight: 900; }
.hero-visual { position: relative; }
.hero-visual img { width: 100%; filter: drop-shadow(0 26px 45px rgba(34,73,128,.15)); }
.floating-card { position: absolute; padding: 14px 16px; background: rgba(255,255,255,.94); border: 1px solid rgba(210,223,241,.92); border-radius: 14px; box-shadow: var(--shadow-sm); }
.floating-card strong { display: block; font-size: 15px; }
.floating-card small { color: var(--muted); }
.float-a { left: -8px; bottom: 62px; }
.float-b { right: 0; top: 58px; }

.trust-strip { background: #fff; border-bottom: 1px solid var(--line); }
.trust-grid { min-height: 106px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); }
.trust-item { display: flex; align-items: center; gap: 14px; padding: 20px 26px; background: #fff; }
.icon-box { flex: 0 0 auto; width: 44px; height: 44px; display: grid; place-items: center; border-radius: 13px; color: var(--primary); background: var(--surface-soft); font-weight: 900; }
.trust-item strong { display: block; font-size: 15px; }
.trust-item span { display: block; margin-top: 2px; color: var(--muted); font-size: 12px; }

.section { padding: 92px 0; }
.section-white { background: #fff; }
.section-soft { background: linear-gradient(180deg, #f7faff 0%, #f3f7fc 100%); }
.section-dark { background: #10213a; color: #fff; }
.section-head { max-width: 760px; margin: 0 auto 46px; text-align: center; }
.section-head.align-left { max-width: 700px; margin-left: 0; text-align: left; }
.kicker { margin: 0 0 9px; color: var(--primary); font-size: 14px; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.section-dark .kicker { color: #63d9d0; }
.section-title { margin: 0; font-size: clamp(30px, 4vw, 44px); line-height: 1.25; letter-spacing: -.025em; }
.section-desc { margin: 16px 0 0; color: var(--muted); font-size: 17px; }
.section-dark .section-desc { color: #b8c5d8; }

.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cards-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.card { position: relative; overflow: hidden; padding: 28px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: .22s ease; }
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #c5d6eb; }
.card-icon { width: 52px; height: 52px; display: grid; place-items: center; margin-bottom: 20px; color: var(--primary); background: linear-gradient(145deg, #eaf3ff, #eefbf9); border-radius: 15px; font-size: 21px; font-weight: 900; }
.card h3 { margin: 0 0 10px; font-size: 21px; }
.card p { margin: 0; color: var(--muted); }
.card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 22px; color: var(--primary); font-weight: 800; font-size: 14px; }
.card-link::after { content: "→"; transition: .2s; }
.card:hover .card-link::after { transform: translateX(3px); }

.split-layout { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 64px; }
.split-layout.reverse { grid-template-columns: 1.1fr .9fr; }
.split-layout.reverse .split-media { order: 2; }
.split-media { padding: 26px; background: linear-gradient(150deg, #eaf3ff, #f0faf9); border: 1px solid #d6e3f3; border-radius: 28px; }
.split-media img { border-radius: 19px; box-shadow: var(--shadow-sm); }
.feature-list { display: grid; gap: 16px; margin-top: 28px; }
.feature-item { display: grid; grid-template-columns: 34px 1fr; gap: 12px; align-items: start; }
.feature-check { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 9px; background: #dcf5eb; color: var(--success); font-weight: 900; }
.feature-item strong { display: block; margin-bottom: 2px; }
.feature-item p { margin: 0; color: var(--muted); font-size: 14px; }

.scenario-card { min-height: 265px; display: flex; flex-direction: column; }
.scenario-tag { display: inline-flex; align-self: flex-start; margin-bottom: 34px; padding: 6px 10px; border-radius: 999px; color: var(--primary); background: var(--surface-soft); font-size: 12px; font-weight: 800; }
.scenario-card p { flex: 1; }

.process-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; counter-reset: steps; }
.process-item { position: relative; min-height: 220px; padding: 24px 18px; background: #fff; border: 1px solid var(--line); border-radius: 18px; }
.process-item::before { counter-increment: steps; content: "0" counter(steps); display: block; margin-bottom: 30px; color: var(--primary); font-size: 14px; font-weight: 900; letter-spacing: .08em; }
.process-item:not(:last-child)::after { content: "→"; position: absolute; top: 45px; right: -12px; z-index: 3; width: 24px; height: 24px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: #fff; color: var(--primary); font-size: 12px; }
.process-item h3 { margin: 0 0 8px; font-size: 17px; }
.process-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.75; }

.compliance-box { display: grid; grid-template-columns: .72fr 1.28fr; gap: 52px; align-items: center; padding: 48px; color: #fff; background: linear-gradient(135deg, #112a49, #0e4a6b); border-radius: 28px; box-shadow: var(--shadow); }
.compliance-box p { color: #c7d8e7; }
.compliance-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.compliance-point { padding: 18px; border: 1px solid rgba(255,255,255,.13); border-radius: 15px; background: rgba(255,255,255,.06); }
.compliance-point strong { display: block; margin-bottom: 5px; }
.compliance-point span { color: #bcd0e3; font-size: 13px; }

.cta-box { position: relative; overflow: hidden; padding: 56px; border-radius: 30px; color: #fff; background: linear-gradient(135deg, #1769e0 0%, #0b7f9e 100%); box-shadow: 0 24px 60px rgba(12,92,174,.25); }
.cta-box::after { content: "8"; position: absolute; right: 34px; top: -56px; color: rgba(255,255,255,.08); font-size: 260px; font-weight: 900; line-height: 1; }
.cta-content { position: relative; z-index: 2; max-width: 760px; }
.cta-box h2 { margin: 0; font-size: clamp(30px, 4vw, 46px); line-height: 1.25; }
.cta-box p { margin: 14px 0 26px; color: #e2f0ff; font-size: 17px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.cta-box .btn-secondary { border-color: rgba(255,255,255,.45); background: rgba(255,255,255,.13); color: #fff; }

.page-hero { padding: 92px 0 76px; background: linear-gradient(145deg, #eef5ff, #f3fbfa); border-bottom: 1px solid var(--line); }
.page-hero-grid { display: grid; grid-template-columns: 1fr .72fr; align-items: center; gap: 50px; }
.page-hero p { max-width: 720px; margin: 19px 0 0; color: var(--muted); font-size: 18px; }
.page-hero-visual { padding: 22px; border-radius: 24px; background: rgba(255,255,255,.64); border: 1px solid #d6e3f3; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; color: var(--muted); font-size: 13px; }
.breadcrumb a { color: var(--primary); }

.solution-row { display: grid; grid-template-columns: 76px 1fr; gap: 24px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.solution-row:last-child { border-bottom: 0; }
.solution-number { width: 64px; height: 64px; display: grid; place-items: center; border-radius: 18px; color: var(--primary); background: var(--surface-soft); font-weight: 900; }
.solution-row h3 { margin: 0 0 8px; font-size: 23px; }
.solution-row p { margin: 0; color: var(--muted); }
.solution-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 15px; }
.solution-tags span { padding: 5px 10px; border-radius: 999px; background: #edf3fa; color: #52657e; font-size: 12px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.compare-table { width: 100%; min-width: 780px; border-collapse: collapse; }
.compare-table th, .compare-table td { padding: 18px 20px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.compare-table th { background: #f0f5fb; font-size: 14px; }
.compare-table td { color: var(--muted); font-size: 14px; }
.compare-table tr:last-child td { border-bottom: 0; }
.compare-table td:first-child { color: var(--ink); font-weight: 800; }

.timeline { position: relative; max-width: 900px; margin: 0 auto; }
.timeline::before { content: ""; position: absolute; left: 31px; top: 20px; bottom: 20px; width: 2px; background: #cbd9ea; }
.timeline-item { position: relative; display: grid; grid-template-columns: 64px 1fr; gap: 24px; padding: 0 0 28px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot { position: relative; z-index: 2; width: 64px; height: 64px; display: grid; place-items: center; border: 8px solid var(--bg); border-radius: 50%; background: var(--primary); color: #fff; font-weight: 900; }
.timeline-card { padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-sm); }
.timeline-card h3 { margin: 0 0 8px; }
.timeline-card p { margin: 0; color: var(--muted); }
.timeline-meta { margin-top: 12px; color: var(--primary); font-size: 13px; font-weight: 800; }

.faq-list { display: grid; gap: 12px; max-width: 920px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: 16px; background: #fff; overflow: hidden; }
.faq-question { width: 100%; display: flex; justify-content: space-between; gap: 20px; padding: 20px 22px; border: 0; background: transparent; color: var(--ink); text-align: left; font-weight: 800; }
.faq-question::after { content: "+"; flex: 0 0 auto; width: 26px; height: 26px; display: grid; place-items: center; border-radius: 8px; background: var(--surface-soft); color: var(--primary); font-size: 20px; transition: .2s; }
.faq-item.open .faq-question::after { content: "−"; }
.faq-answer { display: none; padding: 0 22px 22px; color: var(--muted); }
.faq-answer p { margin: 0; }
.faq-item.open .faq-answer { display: block; }

.contact-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 30px; align-items: start; }
.contact-panel, .form-panel { padding: 32px; border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: var(--shadow-sm); }
.contact-panel h2, .form-panel h2 { margin: 0 0 10px; }
.contact-panel > p, .form-panel > p { margin: 0 0 26px; color: var(--muted); }
.contact-list { display: grid; gap: 14px; }
.contact-item { display: grid; grid-template-columns: 44px 1fr; gap: 13px; align-items: center; padding: 14px; border-radius: 14px; background: #f4f8fd; }
.contact-item .icon-box { width: 44px; height: 44px; }
.contact-item small { display: block; color: var(--muted); }
.contact-item strong { display: block; word-break: break-all; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.form-group { display: grid; gap: 7px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 14px; font-weight: 800; }
.required { color: var(--danger); }
.form-control { width: 100%; min-height: 48px; padding: 10px 13px; border: 1px solid #ccd8e8; border-radius: 11px; outline: none; color: var(--ink); background: #fff; transition: .18s; }
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(23,105,224,.10); }
textarea.form-control { min-height: 128px; resize: vertical; }
.form-hint { color: var(--muted); font-size: 12px; }
.form-message { display: none; margin: 16px 0 0; padding: 13px 15px; border-radius: 10px; font-size: 14px; }
.form-message.show { display: block; }
.form-message.success { color: #0f6849; background: #e0f6ed; border: 1px solid #b8e8d4; }
.form-message.error { color: #a52b3e; background: #fff0f2; border: 1px solid #f1c5cc; }

.notice-box { padding: 22px 24px; border-left: 4px solid var(--accent); border-radius: 0 14px 14px 0; background: #fff8ea; color: #68512a; }
.notice-box strong { color: #4e3b1e; }

.site-footer { color: #b9c6d8; background: #0e1d32; }
.footer-main { display: grid; grid-template-columns: 1.4fr .65fr .65fr .9fr; gap: 42px; padding: 58px 0 38px; }
.footer-brand .brand-title { color: #fff; }
.footer-brand .brand-subtitle { color: #8ea0b9; }
.footer-brand p { max-width: 420px; margin: 18px 0 0; color: #91a2ba; font-size: 14px; }
.footer-col h3 { margin: 0 0 15px; color: #fff; font-size: 15px; }
.footer-links { display: grid; gap: 9px; }
.footer-links a { color: #9eb0c6; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-contact { display: grid; gap: 8px; color: #9eb0c6; font-size: 14px; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 19px 0 24px; border-top: 1px solid rgba(255,255,255,.08); color: #8395ad; font-size: 12px; }
.footer-bottom a:hover { color: #fff; }

.back-top { position: fixed; right: 22px; bottom: 22px; z-index: 40; width: 44px; height: 44px; display: none; place-items: center; border: 0; border-radius: 13px; color: #fff; background: var(--primary); box-shadow: 0 12px 26px rgba(23,105,224,.3); }
.back-top.show { display: grid; }

@media (max-width: 1060px) {
  .nav-links { position: fixed; inset: 115px 20px auto; display: none; flex-direction: column; align-items: stretch; padding: 16px; background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; }
  .menu-toggle { display: block; }
  .nav-actions .btn { display: none; }
  .hero-grid, .page-hero-grid { grid-template-columns: 1fr; }
  .hero-grid { padding-top: 68px; gap: 36px; }
  .hero-visual { max-width: 670px; margin: 0 auto; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .cards-4 { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(3, 1fr); }
  .process-item:nth-child(3)::after { display: none; }
  .compliance-box { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col:last-child { grid-column: 1 / -1; }
}

@media (max-width: 780px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .announcement .container { min-height: 44px; }
  .navbar { min-height: 68px; }
  .nav-links { inset: 108px 14px auto; }
  .brand-title { font-size: 18px; }
  .brand-subtitle { display: none; }
  .hero-grid { min-height: auto; padding: 58px 0 54px; }
  .hero h1, .page-hero h1 { font-size: 38px; }
  .hero-lead { font-size: 16px; }
  .floating-card { display: none; }
  .trust-grid { grid-template-columns: 1fr; }
  .section { padding: 70px 0; }
  .section-head { margin-bottom: 34px; }
  .cards-3, .cards-4 { grid-template-columns: 1fr; }
  .split-layout, .split-layout.reverse { grid-template-columns: 1fr; gap: 34px; }
  .split-layout.reverse .split-media { order: initial; }
  .process-grid { grid-template-columns: 1fr; }
  .process-item { min-height: auto; }
  .process-item::after { display: none !important; }
  .compliance-box { padding: 30px 22px; }
  .compliance-points { grid-template-columns: 1fr; }
  .cta-box { padding: 38px 25px; }
  .page-hero { padding: 66px 0 54px; }
  .page-hero-visual { display: none; }
  .solution-row { grid-template-columns: 1fr; gap: 14px; }
  .solution-number { width: 52px; height: 52px; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.full { grid-column: auto; }
  .contact-panel, .form-panel { padding: 24px 20px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 30px 22px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-col:last-child { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero h1, .page-hero h1 { font-size: 33px; }
  .hero-actions .btn, .cta-actions .btn { width: 100%; }
  .trust-item { padding: 18px; }
  .card { padding: 23px; }
  .footer-main { grid-template-columns: 1fr; }
  .footer-brand, .footer-col:last-child { grid-column: auto; }
}