:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --navy: #1e3a5f;
  --amber: #f59e0b;
  --page: #f8fafc;
  --text: #1f2937;
  --muted: #64748b;
  --line: #e2e8f0;
  --white: #ffffff;
  --radius: 18px;
  --shadow: 0 18px 50px rgba(30, 58, 95, 0.1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; overflow-x: hidden; color: var(--text); background: var(--page); font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif; line-height: 1.7; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
:focus-visible { outline: 3px solid rgba(245, 158, 11, 0.8); outline-offset: 3px; }
[hidden] { display: none !important; }

.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.section { padding: 88px 0; }
.section-white { background: var(--white); }
.section-heading { max-width: 700px; margin-bottom: 38px; }
.section-heading h2, .capability-copy h2, .cta-inner h2 { margin: 8px 0 12px; color: var(--navy); font-size: clamp(28px, 3.3vw, 42px); line-height: 1.25; letter-spacing: -0.03em; }
.section-heading p, .capability-copy p { margin: 0; color: var(--muted); font-size: 17px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-weight: 800; font-size: 14px; letter-spacing: 0.08em; }
.eyebrow::before { content: ""; width: 24px; height: 3px; border-radius: 3px; background: var(--amber); }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 11px 22px; border: 1px solid transparent; border-radius: 10px; font-weight: 800; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--primary); box-shadow: 0 10px 24px rgba(37, 99, 235, .22); }
.button-primary:hover { background: var(--primary-dark); }
.button-secondary { color: var(--primary); border-color: #bfdbfe; background: #eff6ff; }
.button-light { color: var(--primary); background: var(--white); }
.button-block { width: 100%; }
.text-link { display: inline-flex; min-height: 44px; align-items: center; gap: 8px; color: var(--primary); font-weight: 800; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; padding: 10px 16px; color: var(--white); background: var(--navy); border-radius: 8px; transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; z-index: 50; top: 0; border-bottom: 1px solid rgba(226,232,240,.9); background: rgba(255,255,255,.94); backdrop-filter: blur(14px); }
.header-inner { display: flex; min-height: 76px; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: flex; width: 230px; height: 62px; align-items: center; }
.brand img { width: auto; max-width: 100%; height: auto; max-height: 100%; }
.site-menu { display: flex; align-items: center; gap: 30px; color: #334155; font-weight: 700; }
.site-menu a { display: inline-flex; min-height: 44px; align-items: center; }
.site-menu a:hover { color: var(--primary); }
.site-menu .nav-cta { padding-inline: 18px; color: var(--white); background: var(--primary); border-radius: 9px; }
.site-menu .nav-cta:hover { color: var(--white); background: var(--primary-dark); }
.menu-toggle { display: none; width: 46px; height: 46px; padding: 10px; border: 0; border-radius: 9px; background: #eff6ff; cursor: pointer; }
.menu-toggle span:not(.sr-only) { display: block; width: 24px; height: 2px; margin: 5px auto; background: var(--navy); }

.hero { display: grid; min-height: 650px; grid-template-columns: minmax(320px, .75fr) minmax(0, 1.25fr); align-items: center; gap: clamp(55px, 7vw, 105px); padding-top: 72px; padding-bottom: 82px; }
.login-entry { padding: 34px; border: 1px solid #dbeafe; border-radius: 22px; background: var(--white); box-shadow: var(--shadow); }
.login-entry h2 { margin: 9px 0 12px; color: var(--navy); font-size: 26px; line-height: 1.35; }
.login-entry > p { margin: 0; color: var(--muted); }
.login-entry small { display: block; margin-top: 12px; color: var(--muted); text-align: center; }
.entry-points { display: grid; gap: 10px; padding: 0; margin: 24px 0; list-style: none; }
.entry-points li { display: flex; align-items: center; gap: 10px; }
.entry-points span { display: inline-grid; width: 24px; height: 24px; place-items: center; color: var(--primary); background: #eff6ff; border-radius: 50%; font-weight: 900; }
.hero-content h1 { max-width: 720px; margin: 14px 0 20px; color: var(--navy); font-size: clamp(42px, 5vw, 62px); line-height: 1.12; letter-spacing: -0.045em; }
.hero-lead { max-width: 680px; margin: 0; color: #526276; font-size: 19px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0; }
.hero-note { display: flex; max-width: 650px; gap: 16px; padding: 17px 20px; border-left: 4px solid var(--amber); color: var(--muted); background: var(--white); border-radius: 4px 12px 12px 4px; box-shadow: 0 8px 22px rgba(30,58,95,.06); }
.hero-note strong { flex: 0 0 auto; color: var(--navy); }

.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.info-card { padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); transition: transform .2s ease, box-shadow .2s ease; }
.info-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.icon-badge { display: grid; width: 48px; height: 48px; place-items: center; color: var(--primary); background: #eff6ff; border-radius: 13px; font-weight: 900; }
.info-card h3 { margin: 20px 0 8px; color: var(--navy); font-size: 20px; }
.info-card p { margin: 0; color: var(--muted); }

.gifts-section { background: linear-gradient(180deg, #f8fafc 0%, #eff6ff 100%); }
.heading-row { display: flex; max-width: none; align-items: end; justify-content: space-between; gap: 30px; }
.heading-row > div { max-width: 700px; }
.product-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 22px; }
.product-card { overflow: hidden; border: 1px solid var(--line); border-radius: 15px; background: var(--white); box-shadow: 0 8px 24px rgba(30,58,95,.05); transition: transform .2s ease, box-shadow .2s ease; }
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.product-card img { width: 100%; height: auto; aspect-ratio: 1 / 1; object-fit: cover; background: var(--white); }
.product-info { padding: 16px 17px 18px; }
.product-info h3 { margin: 0 0 3px; overflow: hidden; color: var(--navy); font-size: 17px; line-height: 1.45; text-overflow: ellipsis; white-space: nowrap; }
.product-info p { margin: 0 0 9px; color: var(--muted); font-size: 14px; }
.product-info strong { color: #d97706; font-size: 18px; }
.price-note { margin: 24px 0 0; padding: 14px 18px; color: var(--muted); background: rgba(255,255,255,.78); border: 1px solid var(--line); border-radius: 10px; font-size: 14px; }

.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.scenario-card { position: relative; overflow: hidden; min-height: 210px; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.scenario-card > span { display: inline-flex; min-height: 30px; align-items: center; padding: 2px 11px; color: var(--primary); background: #eff6ff; border-radius: 999px; font-size: 13px; font-weight: 800; }
.scenario-card h3 { margin: 22px 0 8px; color: var(--navy); font-size: 21px; }
.scenario-card p { margin: 0; color: var(--muted); }
.scenario-card::after { content: ""; position: absolute; right: -25px; bottom: -35px; width: 90px; height: 90px; background: #eff6ff; border-radius: 50%; }

.process-section { background: var(--navy); }
.process-section .section-heading h2, .process-section .section-heading p { color: var(--white); }
.process-section .section-heading p { opacity: .76; }
.process-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; padding: 0; margin: 0; list-style: none; counter-reset: steps; }
.process-list li { position: relative; padding: 25px; color: var(--white); border: 1px solid rgba(255,255,255,.15); border-radius: var(--radius); background: rgba(255,255,255,.07); }
.process-list li > span { display: grid; width: 42px; height: 42px; place-items: center; color: var(--navy); background: var(--amber); border-radius: 50%; font-weight: 900; }
.process-list h3 { margin: 18px 0 8px; font-size: 20px; }
.process-list p { margin: 0; color: rgba(255,255,255,.72); }
.center-action { margin-top: 32px; text-align: center; }

.capability-layout { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 80px; }
.capability-copy p { margin-bottom: 26px; }
.capability-list { display: grid; gap: 16px; }
.capability-list article { display: flex; gap: 20px; padding: 24px; border: 1px solid var(--line); border-radius: 15px; background: var(--page); }
.capability-list article > span { color: var(--amber); font-size: 22px; font-weight: 900; }
.capability-list h3 { margin: 0 0 5px; color: var(--navy); font-size: 20px; }
.capability-list p { margin: 0; color: var(--muted); }

.faq-section { background: #f1f5f9; }
.faq-layout { display: grid; grid-template-columns: .75fr 1.25fr; align-items: start; gap: 70px; }
.faq-intro { position: sticky; top: 112px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { border: 1px solid var(--line); border-radius: 14px; background: var(--white); }
.faq-item h3 { margin: 0; }
.faq-item button { display: flex; width: 100%; min-height: 60px; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 20px; border: 0; color: var(--navy); background: transparent; text-align: left; font-weight: 800; cursor: pointer; }
.faq-item button span { font-size: 24px; transition: transform .2s ease; }
.faq-item button[aria-expanded="true"] span { transform: rotate(45deg); }
.faq-answer { padding: 0 20px 20px; color: var(--muted); }
.faq-answer p { margin: 0; }

.cta-section { padding: 56px 0; color: var(--white); background: var(--primary); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 35px; }
.cta-inner h2 { color: var(--white); }
.cta-inner p { margin: 0; color: rgba(255,255,255,.82); }
.eyebrow-light { color: var(--white); }
.site-footer { padding-top: 60px; color: #cbd5e1; background: #10243e; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 60px; }
.footer-wordmark { display: block; color: var(--white); font-size: 24px; }
.footer-brand p { max-width: 400px; }
.footer-grid h2 { margin: 0 0 15px; color: var(--white); font-size: 17px; }
.footer-grid p { margin: 7px 0; }
.footer-grid a { display: flex; width: fit-content; min-height: 38px; align-items: center; }
.footer-grid a:hover { color: var(--white); }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; margin-top: 45px; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.1); font-size: 13px; }
.footer-bottom p { margin: 0; }
.back-to-top { position: fixed; z-index: 45; right: 24px; bottom: 24px; width: 48px; height: 48px; border: 0; color: var(--white); background: var(--primary); border-radius: 50%; box-shadow: var(--shadow); cursor: pointer; }

@media (max-width: 980px) {
  .service-grid, .process-list { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { gap: 45px; }
  .capability-layout, .faq-layout { gap: 40px; }
}

@media (max-width: 760px) {
  .container { width: min(100% - 28px, 620px); }
  .section { padding: 64px 0; }
  .header-inner { min-height: 68px; }
  .brand { width: 188px; height: 54px; }
  .menu-toggle { display: block; }
  .site-menu { position: absolute; top: calc(100% + 1px); right: 14px; left: 14px; display: grid; gap: 2px; padding: 12px; border: 1px solid var(--line); background: var(--white); border-radius: 12px; box-shadow: var(--shadow); }
  .site-menu a { padding: 4px 12px; }
  .site-menu .nav-cta { justify-content: center; margin-top: 5px; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 28px; padding-top: 46px; padding-bottom: 64px; }
  .hero-content { order: 1; }
  .login-entry { order: 2; padding: 26px; }
  .hero-content h1 { font-size: clamp(36px, 10vw, 48px); }
  .hero-lead { font-size: 17px; }
  .hero-note { display: grid; gap: 4px; }
  .heading-row, .cta-inner { align-items: flex-start; flex-direction: column; }
  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
  .product-info { padding: 13px; }
  .product-info h3 { font-size: 15px; }
  .product-info strong { font-size: 16px; }
  .capability-layout, .faq-layout { grid-template-columns: 1fr; }
  .faq-intro { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 35px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  .section-heading h2, .capability-copy h2, .cta-inner h2 { font-size: 30px; }
  .hero-actions { display: grid; }
  .service-grid, .scenario-grid, .process-list { grid-template-columns: 1fr; }
  .product-card img { aspect-ratio: 1 / 1; }
  .footer-bottom { flex-direction: column; gap: 8px; }
  .back-to-top { right: 16px; bottom: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}