:root {
  --ink: #101d2f;
  --muted: #5a6878;
  --paper: #f6f9fc;
  --line: #dce5ee;
  --cyan: #00a8b5;
  --cyan-dark: #087684;
  --coral: #ef604d;
  --navy: #0d263b;
  --white: #fff;
  --radius: 8px;
  --shadow: 0 18px 50px rgba(13, 38, 59, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; padding: 10px 16px; background: var(--navy); color: #fff; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid rgba(220,229,238,.9); background: rgba(255,255,255,.94); backdrop-filter: blur(16px); }
.nav-wrap { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; min-width: 0; }
.brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 7px; color: #fff; background: linear-gradient(135deg, var(--cyan-dark), var(--cyan)); font-weight: 800; }
.brand-name { font-weight: 800; white-space: nowrap; }
.brand-name small { display: block; color: var(--muted); font-size: 12px; line-height: 1.2; font-weight: 500; }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a { padding: 9px 13px; border-radius: 6px; text-decoration: none; font-size: 15px; }
.site-nav a:hover, .site-nav a[aria-current="page"] { background: #eaf7f8; color: var(--cyan-dark); }
.nav-cta { background: var(--navy) !important; color: #fff !important; }
.menu-button { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 6px; background: #fff; font-size: 22px; }

.hero { position: relative; min-height: 620px; overflow: hidden; display: grid; align-items: center; background: #eaf2f6; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(246,249,252,.98) 0%, rgba(246,249,252,.94) 34%, rgba(246,249,252,.28) 62%, rgba(246,249,252,.02) 100%); }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-content { position: relative; z-index: 1; max-width: 650px; padding: 88px 0 118px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 18px; color: var(--cyan-dark); font-size: 14px; font-weight: 800; }
.eyebrow::before { content: ""; width: 28px; height: 3px; background: var(--coral); }
h1, h2, h3 { margin: 0; line-height: 1.24; letter-spacing: 0; }
h1 { max-width: 640px; font-size: clamp(42px, 6vw, 72px); }
.hero-lead { max-width: 590px; margin: 24px 0 30px; color: #34475a; font-size: 19px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border: 1px solid var(--navy); border-radius: 6px; background: var(--navy); color: #fff; text-decoration: none; font-weight: 700; }
.button:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(13,38,59,.18); }
.button.secondary { background: rgba(255,255,255,.88); color: var(--navy); }
.trust-strip { position: relative; z-index: 2; margin-top: -72px; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow); }
.trust-item { padding: 24px; border-right: 1px solid var(--line); }
.trust-item:last-child { border-right: 0; }
.trust-item strong { display: block; margin-bottom: 4px; font-size: 17px; }
.trust-item span { color: var(--muted); font-size: 14px; }

.section { padding: 92px 0; }
.section.alt { background: var(--paper); }
.section-head { display: flex; justify-content: space-between; gap: 28px; align-items: end; margin-bottom: 38px; }
.section-head h2 { max-width: 700px; font-size: clamp(30px, 4vw, 44px); }
.section-head p { max-width: 500px; margin: 0; color: var(--muted); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.service-card { min-height: 330px; padding: 28px; border: 1px solid var(--line); border-top: 4px solid var(--cyan); background: #fff; }
.service-card:nth-child(2) { border-top-color: var(--coral); }
.service-card:nth-child(3) { border-top-color: var(--navy); }
.service-no { color: var(--cyan-dark); font: 800 14px/1 system-ui, sans-serif; }
.service-card h3 { margin-top: 54px; font-size: 25px; }
.service-card p { color: var(--muted); }
.text-link { color: var(--cyan-dark); font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.workflow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: steps; }
.workflow article { position: relative; padding: 0 28px 0 58px; border-left: 1px solid var(--line); }
.workflow article::before { counter-increment: steps; content: "0" counter(steps); position: absolute; left: 16px; top: 0; color: var(--coral); font-weight: 900; }
.workflow h3 { font-size: 19px; }
.workflow p { color: var(--muted); font-size: 15px; }
.band { padding: 54px 0; background: var(--navy); color: #fff; }
.band .container { display: flex; justify-content: space-between; align-items: center; gap: 30px; }
.band h2 { font-size: clamp(28px, 4vw, 42px); }
.band p { max-width: 620px; margin: 10px 0 0; color: #c7d5df; }
.band .button { border-color: #fff; background: #fff; color: var(--navy); white-space: nowrap; }

.page-hero { padding: 84px 0 64px; background: var(--paper); border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 850px; font-size: clamp(38px, 5vw, 60px); }
.page-hero p { max-width: 760px; margin: 20px 0 0; color: var(--muted); font-size: 18px; }
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.content-block { padding: 30px; border: 1px solid var(--line); background: #fff; }
.content-block h2 { font-size: 27px; margin-bottom: 14px; }
.content-block h3 { margin-top: 24px; font-size: 18px; }
.content-block p, .content-block li { color: var(--muted); }
.plain-list { margin: 14px 0 0; padding-left: 20px; }
.plain-list li { margin-bottom: 8px; }
.price-table { width: 100%; border-collapse: collapse; background: #fff; }
.price-table th, .price-table td { padding: 18px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.price-table th { background: var(--navy); color: #fff; }
.price-table td:first-child { font-weight: 800; }
.notice { padding: 18px 20px; border-left: 4px solid var(--coral); background: #fff3f0; color: #5c3029; }
.contact-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 24px; }
.contact-list { margin: 0; padding: 0; list-style: none; }
.contact-list li { padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-list strong { display: block; }
.contact-list span { color: var(--muted); word-break: break-word; }
.required-data { color: #b63e32 !important; font-weight: 700; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
label { font-weight: 700; }
input, select, textarea { width: 100%; padding: 12px 14px; border: 1px solid #bac8d5; border-radius: 5px; background: #fff; color: var(--ink); font: inherit; }
textarea { min-height: 130px; resize: vertical; }
.form-note { color: var(--muted); font-size: 14px; }
.policy { max-width: 900px; }
.policy h2 { margin: 38px 0 10px; font-size: 24px; }
.policy p, .policy li { color: #435466; }

.site-footer { padding: 48px 0 24px; background: #081b2b; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 50px; }
.footer-title { font-weight: 900; font-size: 20px; }
.footer-copy, .footer-links a, .footer-meta { color: #afc0cc; font-size: 14px; }
.footer-links { display: grid; align-content: start; gap: 8px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 36px; padding-top: 20px; border-top: 1px solid #21394c; }

@media (max-width: 900px) {
  .menu-button { display: block; }
  .site-nav { display: none; position: absolute; top: 72px; left: 0; right: 0; padding: 14px 20px 20px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 16px 30px rgba(13,38,59,.1); }
  .site-nav.open { display: grid; }
  .hero { min-height: 650px; align-items: end; }
  .hero::after { background: linear-gradient(180deg, rgba(246,249,252,.2), rgba(246,249,252,.98) 50%, #f6f9fc 100%); }
  .hero-image { object-position: 68% center; }
  .hero-content { padding-top: 260px; padding-bottom: 110px; }
  .trust-grid, .service-grid, .workflow, .content-grid, .contact-layout, .footer-grid { grid-template-columns: 1fr 1fr; }
  .trust-item:nth-child(2) { border-right: 0; }
  .trust-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 620px) {
  .container { width: min(100% - 28px, 1180px); }
  .brand-name { font-size: 14px; }
  .brand-name small { display: none; }
  .hero { min-height: 690px; }
  .hero-content { padding-top: 250px; }
  h1 { font-size: 40px; }
  .hero-lead { font-size: 17px; }
  .trust-grid, .service-grid, .workflow, .content-grid, .contact-layout, .footer-grid, .form-grid { grid-template-columns: 1fr; }
  .trust-item { border-right: 0; border-bottom: 1px solid var(--line); }
  .trust-item:last-child { border-bottom: 0; }
  .section { padding: 66px 0; }
  .section-head, .band .container, .footer-bottom { align-items: start; flex-direction: column; }
  .workflow article { padding-bottom: 20px; }
  .field.full { grid-column: auto; }
  .price-table { display: block; overflow-x: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}