/* 品牌色取自 Logo：深蓝 / 主蓝 / 天蓝 / 旭日橙 */
:root {
  --navy: #0b318c;
  --blue: #2275da;
  --sky: #60b8f7;
  --sun: #ff5f15;
  --ink: #1b2440;
  --muted: #5f6b85;
  --line: #e6ebf3;
  --soft: #f4f8fd;
  --radius: 16px;
  --shadow: 0 12px 40px rgba(11, 49, 140, .08);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { font-family: var(--font); color: var(--ink); line-height: 1.75; background: #fff; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container { width: min(1200px, 100% - 48px); margin-inline: auto; }

/* ---------- 按钮 ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 48px; padding: 0 28px; border-radius: 999px; font-weight: 600; font-size: 15px; transition: transform .2s, box-shadow .2s, background .2s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--sun); color: #fff; box-shadow: 0 8px 24px rgba(255, 95, 21, .3); }
.btn-primary:hover { box-shadow: 0 12px 28px rgba(255, 95, 21, .38); }
.btn-ghost { color: var(--navy); }
.btn-ghost:hover { color: var(--blue); }
.btn-sm { height: 40px; padding: 0 22px; font-size: 14px; }

/* ---------- 导航 ---------- */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; height: 76px; transition: background .3s, box-shadow .3s; }
.nav.scrolled { background: rgba(255, 255, 255, .92); backdrop-filter: blur(12px); box-shadow: 0 1px 0 var(--line); }
.nav-inner { height: 100%; display: flex; align-items: center; gap: 40px; }
.brand img { height: 40px; width: auto; }
.nav-links { display: flex; gap: 32px; margin-left: auto; }
.nav-links a { font-size: 15px; color: var(--ink); position: relative; padding: 4px 0; }
.nav-links a::after { content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px; background: var(--sun); transition: width .25s; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-toggle { display: none; background: none; border: 0; width: 40px; height: 40px; cursor: pointer; flex-direction: column; justify-content: center; gap: 5px; align-items: center; margin-left: auto; }
.nav-toggle span { width: 22px; height: 2px; background: var(--navy); border-radius: 2px; transition: transform .25s, opacity .25s; }

/* ---------- 首屏 ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 120px 0 160px; overflow: hidden; background: radial-gradient(1200px 600px at 85% 20%, #eaf4ff 0%, transparent 60%), #fff; }
.hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 48px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; background: var(--soft); color: var(--navy); font-size: 13px; font-weight: 600; letter-spacing: .08em; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--sun); }
.hero h1 { margin: 24px 0 20px; font-size: clamp(40px, 5.6vw, 68px); line-height: 1.18; color: var(--navy); font-weight: 800; letter-spacing: .02em; }
.hero h1 em { font-style: normal; color: var(--sun); }
.lead { font-size: 17px; color: var(--muted); max-width: 560px; }
.hero-actions { display: flex; gap: 16px; margin: 36px 0 48px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 48px; }
.hero-stats strong { display: block; font-size: 30px; color: var(--navy); line-height: 1.2; font-weight: 800; }
.hero-stats span { font-size: 13px; color: var(--muted); }

.hero-visual { position: relative; display: grid; place-items: center; aspect-ratio: 1; }
.orb { position: absolute; inset: 8%; border-radius: 50%; background: conic-gradient(from 200deg, rgba(96, 184, 247, .25), rgba(34, 117, 218, .12), rgba(255, 95, 21, .12), rgba(96, 184, 247, .25)); filter: blur(30px); animation: spin 18s linear infinite; }
.hero-mark { position: relative; width: 78%; filter: drop-shadow(0 30px 40px rgba(11, 49, 140, .18)); animation: float 6s ease-in-out infinite; }

.hero-bg { position: absolute; inset: auto 0 0; height: 220px; z-index: 1; }
.wave { position: absolute; inset: 0; width: 100%; height: 100%; }
.wave-1 path { fill: var(--sky); opacity: .18; }
.wave-2 path { fill: var(--blue); opacity: .16; }
.wave-3 path { fill: var(--navy); opacity: .9; }
.wave-1 { animation: drift 14s ease-in-out infinite alternate; }
.wave-2 { animation: drift 10s ease-in-out infinite alternate-reverse; }

@keyframes float { 50% { transform: translateY(-14px); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes drift { to { transform: translateX(-40px) scaleY(1.08); } }

/* ---------- 通用区块 ---------- */
.section { padding: 110px 0; }
.section-soft { background: var(--soft); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.kicker { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .3em; color: var(--sun); margin-bottom: 10px; }
.kicker::before { content: ""; display: inline-block; width: 24px; height: 2px; background: var(--sun); vertical-align: middle; margin-right: 10px; }
.kicker-light { color: #ffb08a; }
.kicker-light::before { background: #ffb08a; }
h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.3; color: var(--navy); font-weight: 800; margin-bottom: 16px; }
.section-head p { color: var(--muted); }

/* ---------- 业务卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.card { padding: 36px 28px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: transform .3s, box-shadow .3s, border-color .3s; }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.card-icon { width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center; background: linear-gradient(135deg, var(--sky), var(--blue)); margin-bottom: 24px; }
.card-icon svg { width: 28px; height: 28px; fill: none; stroke: #fff; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card:nth-child(2) .card-icon { background: linear-gradient(135deg, var(--blue), var(--navy)); }
.card:nth-child(3) .card-icon { background: linear-gradient(135deg, #3a8ee6, var(--navy)); }
.card:nth-child(4) .card-icon { background: linear-gradient(135deg, #ff8a4c, var(--sun)); }
.card h3 { font-size: 19px; color: var(--navy); margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--muted); }

/* ---------- 核心产品 ---------- */
.section-dark { background: linear-gradient(160deg, var(--navy) 0%, #08246a 100%); color: #dbe6ff; position: relative; overflow: hidden; }
.section-dark::before { content: ""; position: absolute; right: -200px; top: -200px; width: 600px; height: 600px; border-radius: 50%; background: radial-gradient(circle, rgba(96, 184, 247, .25), transparent 70%); }
.section-dark h2 { color: #fff; }
.product { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.product-text > p { margin-bottom: 24px; color: #b9c9ee; }
.checks li { position: relative; padding-left: 30px; margin-bottom: 12px; font-size: 15px; }
.checks li::before { content: "✓"; position: absolute; left: 0; top: 2px; width: 20px; height: 20px; border-radius: 50%; background: var(--sun); color: #fff; font-size: 12px; display: grid; place-items: center; line-height: 1; font-weight: 700; }

.mock { background: #fff; border-radius: 14px; box-shadow: 0 40px 80px rgba(0, 0, 0, .35); overflow: hidden; color: var(--ink); transform: perspective(1200px) rotateY(-6deg) rotateX(2deg); transition: transform .5s; }
.mock:hover { transform: none; }
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 12px 16px; background: #f1f4f9; border-bottom: 1px solid var(--line); }
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: #ff6058; }
.mock-bar i:nth-child(2) { background: #ffbd2e; }
.mock-bar i:nth-child(3) { background: #28c940; }
.mock-bar span { margin-left: 12px; font-size: 12px; color: var(--muted); }
.mock-body { padding: 20px; }
.mock-row { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; margin-bottom: 10px; font-size: 14px; }
.mock-row b { flex: 1; font-weight: 600; font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
.mock-row em { font-style: normal; font-size: 12px; padding: 2px 10px; border-radius: 999px; }
.ok { background: #e7f8ee; color: #16a34a; }
.warn { background: #fff1e8; color: var(--sun); }
.mock-progress { height: 6px; border-radius: 6px; background: var(--soft); margin: 18px 0 10px; overflow: hidden; }
.mock-progress span { display: block; height: 100%; background: linear-gradient(90deg, var(--sky), var(--blue)); border-radius: inherit; }
.mock-foot { font-size: 12px; color: var(--muted); }

/* ---------- 关于 ---------- */
.about { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: center; }
.about-visual { padding: 40px; border-radius: 24px; background: var(--soft); }
.about-text p { color: var(--muted); margin-bottom: 16px; }
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.values div { padding: 20px; border-left: 3px solid var(--sun); background: var(--soft); border-radius: 0 12px 12px 0; }
.values b { display: block; font-size: 18px; color: var(--navy); }
.values span { font-size: 13px; color: var(--muted); }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: s; }
.steps li { position: relative; padding: 32px 28px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); }
.steps li:not(:last-child)::after { content: "→"; position: absolute; right: -20px; top: 50%; transform: translateY(-50%); color: var(--sky); font-size: 20px; }
.steps span { font-size: 36px; font-weight: 800; color: transparent; -webkit-text-stroke: 1.5px var(--blue); line-height: 1; }
.steps h4 { margin: 14px 0 4px; font-size: 18px; color: var(--navy); }
.steps p { font-size: 14px; color: var(--muted); }

/* ---------- 联系 ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: center; padding: 56px; border-radius: 24px; background: linear-gradient(135deg, #eef6ff, #fff 60%); border: 1px solid var(--line); }
.contact-text p { color: var(--muted); }
.contact-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-list li { display: flex; gap: 14px; padding: 20px; background: #fff; border-radius: 14px; box-shadow: 0 4px 16px rgba(11, 49, 140, .05); }
.contact-list i { flex: none; width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; font-style: normal; background: var(--soft); color: var(--blue); font-size: 18px; }
.contact-list b { display: block; font-size: 13px; color: var(--muted); font-weight: 500; }
.contact-list span { font-size: 15px; color: var(--ink); font-weight: 600; word-break: break-all; }
.contact-list a:hover { color: var(--blue); }
.contact-list .wide { grid-column: 1 / -1; }

/* ---------- 页脚 ---------- */
.footer { background: #071a4a; color: #93a5cf; padding: 56px 0 28px; font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; padding-bottom: 32px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand img { height: 44px; width: auto; }
.footer-brand b { display: block; color: #fff; font-size: 16px; }
.footer-brand span { font-size: 11px; letter-spacing: .3em; }
.footer-links { display: flex; gap: 28px; flex-wrap: wrap; }
.footer-links a:hover, .footer-bottom a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 24px; font-size: 13px; }

/* ---------- 滚动渐显 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .product, .about { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { max-width: 360px; margin: 0 auto; }
  .contact { grid-template-columns: 1fr; }
  .mock { transform: none; }
}

@media (max-width: 860px) {
  .nav { background: rgba(255, 255, 255, .96); box-shadow: 0 1px 0 var(--line); }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .nav-links { position: absolute; top: 76px; left: 0; right: 0; flex-direction: column; gap: 0; background: #fff; box-shadow: 0 12px 24px rgba(0, 0, 0, .08); max-height: 0; overflow: hidden; transition: max-height .3s; }
  .nav-links a { padding: 16px 24px; border-top: 1px solid var(--line); }
  .nav-links a::after { display: none; }
  .nav.open .nav-links { max-height: 400px; }
  .nav.open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav.open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero { min-height: auto; padding: 120px 0 140px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 320px; margin: 0 auto; order: -1; }
  .hero-stats { gap: 28px; }
  .section { padding: 80px 0; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps li::after { display: none; }
}

@media (max-width: 560px) {
  .brand img { height: 32px; }
  .cards, .steps, .values, .contact-list { grid-template-columns: 1fr; }
  .contact { padding: 32px 24px; }
  .hero-stats strong { font-size: 24px; }
}