:root {
  --brand: #e8590c;
  --brand-soft: #fff3ea;
  --brand-deep: #c2410c;
  --ink: #1c2733;
  --ink-2: #47586b;
  --ink-3: #7b8a9a;
  --line: #e6ebf1;
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --blue: #155eef;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(28, 39, 51, .08);
  --maxw: 1120px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--brand); color: #fff;
  padding: 8px 16px; border-radius: 0 0 8px 0; z-index: 200;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 34px; width: auto; }
.brand .brand-tag {
  font-size: 12px; color: var(--ink-3); border-left: 1px solid var(--line);
  padding-left: 12px; letter-spacing: .12em;
}
.main-nav ul { display: flex; gap: 6px; }
.main-nav a {
  display: block; padding: 8px 14px; border-radius: 8px;
  color: var(--ink-2); font-size: 15px; transition: all .2s;
}
.main-nav a:hover { color: var(--brand); background: var(--brand-soft); }
.main-nav a[aria-current="page"] { color: var(--brand); font-weight: 600; background: var(--brand-soft); }
.header-cta {
  display: inline-block; padding: 9px 20px; border-radius: 999px;
  background: var(--brand); color: #fff; font-size: 15px; font-weight: 500;
  transition: background .2s;
}
.header-cta:hover { background: var(--brand-deep); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; transition: .2s; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(21, 94, 239, .10), transparent 60%),
    radial-gradient(900px 500px at 5% 110%, rgba(232, 89, 12, .12), transparent 60%),
    linear-gradient(180deg, #fffaf6 0%, #ffffff 100%);
  border-bottom: 1px solid var(--line);
  padding: 84px 0 72px;
}
.hero .kicker {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 16px; font-size: 14px; color: var(--ink-2); margin-bottom: 22px;
  box-shadow: var(--shadow);
}
.hero .kicker b { color: var(--brand); font-weight: 600; }
.hero h1 {
  font-size: clamp(30px, 5vw, 52px); line-height: 1.25; font-weight: 700;
  letter-spacing: .01em; max-width: 21em;
}
.hero h1 .hl { color: var(--brand); }
.hero .sub {
  margin-top: 18px; font-size: clamp(16px, 2vw, 19px); color: var(--ink-2); max-width: 44em;
}
.hero-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 26px; border-radius: 999px; font-size: 16px;
  transition: all .2s; border: 1px solid transparent;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-deep); transform: translateY(-1px); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }

.hero-stats {
  margin-top: 48px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.stat {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow);
}
.stat b { display: block; font-size: 26px; color: var(--brand); line-height: 1.3; }
.stat span { font-size: 13.5px; color: var(--ink-3); }

/* ---------- Sections ---------- */
.section { padding: 76px 0; }
.section.alt { background: var(--bg-soft); }
.section-head { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.section-head .eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: .2em; color: var(--brand);
  font-weight: 600; margin-bottom: 10px;
}
.section-head h2 { font-size: clamp(24px, 3.4vw, 34px); line-height: 1.35; }
.section-head p { margin-top: 12px; color: var(--ink-2); }

.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; transition: all .2s;
}
.section:not(.alt) .card { background: var(--bg-soft); border-color: transparent; }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--line); }
.card .icon {
  width: 44px; height: 44px; border-radius: 11px; background: var(--brand-soft);
  display: flex; align-items: center; justify-content: center; font-size: 22px; margin-bottom: 14px;
}
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { font-size: 14.5px; color: var(--ink-2); }
.card ul { margin-top: 10px; }
.card ul li {
  font-size: 14px; color: var(--ink-2); padding-left: 18px; position: relative; margin: 4px 0;
}
.card ul li::before { content: ""; position: absolute; left: 0; top: .72em; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); }

/* ---------- Feature split ---------- */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: stretch; }
.split .media { align-self: stretch; min-height: 360px; }
.split .media img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--line); }
.split h2 { font-size: clamp(23px, 3vw, 32px); line-height: 1.35; margin-bottom: 14px; }
.split p { color: var(--ink-2); margin-bottom: 12px; }
.check-list li { padding-left: 30px; position: relative; margin: 10px 0; color: var(--ink-2); }
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px;
  background: var(--brand-soft); color: var(--brand); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700;
}
.check-list li b { color: var(--ink); }

/* ---------- Cards gallery ---------- */
.card-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card-item {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff;
  box-shadow: var(--shadow);
}
.card-item img { aspect-ratio: 622 / 393; object-fit: cover; width: 100%; }
.card-item figcaption { padding: 12px 16px; font-size: 14px; color: var(--ink-2); }
.card-item figcaption b { color: var(--ink); display: block; font-size: 15px; }

/* ---------- Brands ---------- */
.brand-wall img { width: 100%; border-radius: var(--radius); border: 1px solid var(--line); margin-bottom: 16px; box-shadow: var(--shadow); }
.brand-tags { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 26px; }
.brand-tags span {
  background: #fff; border: 1px solid var(--line); padding: 6px 16px; border-radius: 999px;
  font-size: 13.5px; color: var(--ink-2);
}

/* ---------- Steps ---------- */
.steps { counter-reset: step; }
.step {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px;
  position: relative;
}
.step::before {
  counter-increment: step; content: counter(step);
  width: 34px; height: 34px; border-radius: 50%; background: var(--brand); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; margin-bottom: 12px;
}
.step h3 { font-size: 16.5px; margin-bottom: 6px; }
.step p { font-size: 14px; color: var(--ink-2); }

/* ---------- Scenes table ---------- */
.scene-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.scene-table th, .scene-table td { padding: 13px 18px; border-bottom: 1px solid var(--line); font-size: 14.5px; text-align: left; }
.scene-table th { background: var(--brand-soft); color: var(--ink); font-weight: 600; }
.scene-table tr:last-child td { border-bottom: 0; }
.scene-table td:first-child { font-weight: 600; color: var(--ink); }
.scene-table .ok { color: var(--brand); font-weight: 700; }
.scene-table .no { color: #c6cfda; }
.table-scroll { overflow-x: auto; border-radius: var(--radius); }

/* ---------- FAQ ---------- */
.faq-list details {
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 0 22px;
  margin-bottom: 12px;
}
.faq-list summary {
  cursor: pointer; padding: 17px 0; font-weight: 600; font-size: 16px; list-style: none;
  position: relative; padding-right: 34px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  color: var(--brand); font-size: 22px; font-weight: 400; transition: .2s;
}
.faq-list details[open] summary::after { content: "−"; }
.faq-list .faq-a { padding: 0 0 18px; color: var(--ink-2); font-size: 15px; }
.faq-list .faq-a b { color: var(--ink); }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, #fff3ea 0%, #ffe8d9 100%);
  border: 1px solid #ffd9bf; border-radius: 18px; padding: 44px 40px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.cta-band h2 { font-size: clamp(20px, 2.6vw, 28px); }
.cta-band p { color: var(--ink-2); margin-top: 6px; }

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  background: linear-gradient(180deg, #fffaf6, #fff); border-bottom: 1px solid var(--line);
  padding: 56px 0 40px;
}
.page-hero .eyebrow { font-size: 13px; letter-spacing: .2em; color: var(--brand); font-weight: 600; }
.page-hero h1 { font-size: clamp(26px, 4vw, 40px); margin-top: 8px; line-height: 1.3; }
.page-hero p { margin-top: 12px; color: var(--ink-2); max-width: 46em; }
.breadcrumb { font-size: 13.5px; color: var(--ink-3); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb span[aria-current] { color: var(--ink); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: start; }
.info-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.info-card h3 { font-size: 17px; margin-bottom: 14px; }
.info-card dl { display: grid; grid-template-columns: 88px 1fr; row-gap: 12px; column-gap: 12px; font-size: 14.5px; }
.info-card dt { color: var(--ink-3); }
.info-card dd { color: var(--ink); }
.qr-row { display: flex; gap: 22px; justify-content: center; }
.qr-item { text-align: center; }
.qr-item img { width: 150px; height: 150px; object-fit: cover; border-radius: 12px; border: 1px solid var(--line); margin: 0 auto 10px; }
.qr-item span { font-size: 13.5px; color: var(--ink-2); display: block; }
.qr-item b { font-size: 14.5px; color: var(--ink); }

/* ---------- Footer ---------- */
.site-footer { background: #101821; color: #9fb0c0; margin-top: 40px; }
.footer-inner { padding: 52px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; padding-bottom: 36px; }
.footer-grid h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-grid p, .footer-grid li { font-size: 13.5px; line-height: 2; }
.footer-grid a:hover { color: #fff; }
.footer-brand img { height: 30px; width: auto; background: #fff; border-radius: 6px; padding: 5px 8px; margin-bottom: 12px; }
.footer-slogan { color: #d7e0e9; font-size: 14px; }
.footer-bottom {
  border-top: 1px solid #223142; padding: 18px 0; font-size: 13px;
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .split .media { min-height: 0; }
  .split .media img { height: auto; aspect-ratio: 4 / 3; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .main-nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 10px 18px 16px;
    box-shadow: var(--shadow);
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 2px; }
  .main-nav a { padding: 11px 12px; font-size: 16px; }
  .nav-toggle { display: block; }
  .header-cta { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .card-gallery { grid-template-columns: 1fr 1fr; }
  .hero { padding: 56px 0 48px; }
  .section { padding: 54px 0; }
  .cta-band { padding: 30px 24px; }
}

@media (max-width: 460px) {
  .card-gallery { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}