/* ==========================================================================
   higoecs · 九州海购代购系统 — 静态宣传站
   深圳塔灯网络科技有限公司
   ========================================================================== */

:root {
  --primary: #4c1d95;
  --primary-dark: #2e1065;
  --primary-light: #7c3aed;
  --accent: #f43f5e;
  --accent-dark: #be123c;
  --gold: #fbbf24;
  --bg: #ffffff;
  --bg-soft: #f7f5fc;
  --bg-tint: #f1edfa;
  --ink: #1e1633;
  --muted: #6b6480;
  --line: #e7e2f2;
  --green: #16a34a;
  --radius: 16px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 10px rgba(76, 29, 149, .06);
  --shadow: 0 16px 40px rgba(76, 29, 149, .13);
  --shadow-lg: 0 30px 70px rgba(76, 29, 149, .2);
  --maxw: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.75; font-size: 15px;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* 顶部条 */
.topbar { background: var(--primary-dark); color: #cdc0e6; font-size: 13px; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 40px; flex-wrap: wrap; }
.topbar-left { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.topbar-left a { color: #fff; font-weight: 600; }
.topbar-left a:hover { color: var(--gold); }
.topbar-right { display: flex; gap: 18px; align-items: center; }
.topbar-right a { color: #cdc0e6; }
.topbar-right a:hover { color: #fff; }
.topbar-right a.hot { color: #fff; font-weight: 700; }

/* 头部 */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92); backdrop-filter: blur(12px); box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 11px; font-size: 24px; font-weight: 800; color: var(--primary); letter-spacing: -.5px; }
.brand .logo-mark {
  width: 42px; height: 42px; border-radius: 12px; flex: none;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; display: grid; place-items: center; font-size: 20px; font-weight: 800;
  box-shadow: 0 8px 18px rgba(76,29,149,.32);
}
.brand em { font-style: normal; color: var(--accent); }
.brand small { display: block; font-size: 10px; font-weight: 600; color: var(--muted); letter-spacing: 2px; }

.main-nav > ul { display: flex; align-items: center; gap: 2px; }
.main-nav > ul > li > a { display: block; padding: 10px 13px; border-radius: 8px; font-size: 15px; font-weight: 600; color: var(--ink); transition: color .2s, background .2s; }
.main-nav > ul > li > a:hover, .main-nav > ul > li > a.active { color: var(--accent); background: #ffeef2; }
.header-cta {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff;
  padding: 11px 22px; border-radius: 99px; font-weight: 700; font-size: 14px; white-space: nowrap;
  box-shadow: 0 10px 22px rgba(244,63,94,.32); transition: transform .2s, box-shadow .2s;
}
.header-cta:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(244,63,94,.42); }
.nav-toggle { display: none; background: none; border: none; font-size: 26px; color: var(--primary); cursor: pointer; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 30px; border-radius: 99px; font-size: 15px; font-weight: 700; cursor: pointer; border: none; transition: transform .2s, box-shadow .2s, background .2s; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff; box-shadow: 0 12px 26px rgba(244,63,94,.34); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 32px rgba(244,63,94,.46); }
.btn-navy { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; box-shadow: 0 12px 26px rgba(76,29,149,.32); }
.btn-navy:hover { transform: translateY(-2px); }
.btn-ghost { background: rgba(255,255,255,.12); color: #fff; border: 1.5px solid rgba(255,255,255,.4); }
.btn-ghost:hover { background: rgba(255,255,255,.22); }
.btn-lg { padding: 17px 40px; font-size: 16px; }
.btn-block { width: 100%; }

/* Hero */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(244,63,94,.22) 0%, transparent 55%),
    radial-gradient(800px 600px at -10% 110%, rgba(124,58,237,.25) 0%, transparent 55%),
    linear-gradient(135deg, #1e0a3c 0%, var(--primary-dark) 45%, var(--primary) 100%);
  padding: 104px 0 120px;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 44px 44px; pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 56px; align-items: center; position: relative; z-index: 2; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.22); padding: 8px 18px; border-radius: 99px; font-size: 13px; margin-bottom: 26px; }
.hero-badge b { color: var(--gold); }
.hero h1 { font-size: 52px; line-height: 1.16; font-weight: 800; letter-spacing: -1.5px; margin-bottom: 22px; }
.hero h1 .hl { color: var(--gold); }
.hero .lead { font-size: 18px; color: #d9cfee; max-width: 540px; margin-bottom: 18px; }
.hero .tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 34px; }
.hero .tags span { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); padding: 7px 15px; border-radius: 99px; font-size: 13px; color: #ece5f8; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-card {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.16);
  border-radius: 22px; padding: 26px; backdrop-filter: blur(8px); box-shadow: var(--shadow-lg);
}
.dash { display: grid; gap: 12px; }
.dash-row { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); border-radius: 12px; padding: 15px 16px; display: flex; align-items: center; gap: 13px; }
.dash-row .ic { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, var(--accent), var(--gold)); flex: none; display: grid; place-items: center; }
.dash-row .ic svg { width: 20px; height: 20px; stroke: #fff; }
.dash-row .meta { flex: 1; }
.dash-row .meta b { display: block; font-size: 14px; color: #fff; }
.dash-row .meta span { font-size: 12px; color: #c9bde2; }
.dash-row .pill { font-size: 11.5px; padding: 4px 11px; border-radius: 99px; font-weight: 700; }
.pill.ok { background: rgba(22,163,74,.2); color: #86efac; }
.pill.warn { background: rgba(251,191,36,.18); color: #fde68a; }
.pill.info { background: rgba(244,63,94,.18); color: #fda4af; }
.hero-float { position: absolute; left: -18px; bottom: 26px; background: #fff; color: var(--ink); border-radius: 14px; padding: 14px 18px; box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: 12px; }
.hero-float .f-ic { width: 42px; height: 42px; border-radius: 11px; background: var(--bg-tint); color: var(--primary); display: grid; place-items: center; }
.hero-float .f-ic svg { width: 22px; height: 22px; stroke: var(--primary); }
.hero-float b { display: block; font-size: 14px; }
.hero-float span { font-size: 12px; color: var(--muted); }

/* 数字条 */
.stats-band { background: #fff; border-bottom: 1px solid var(--line); padding: 42px 0; }
.stats-band .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stats-band .num { font-size: 44px; font-weight: 800; color: var(--primary); line-height: 1; }
.stats-band .num em { font-style: normal; color: var(--accent); }
.stats-band span { font-size: 14px; color: var(--muted); }

/* 通用 section */
.section { padding: 96px 0; }
.section-soft { background: var(--bg-soft); }
.sec-head { text-align: center; max-width: 760px; margin: 0 auto 58px; }
.sec-head .kicker { display: inline-block; color: var(--accent); font-weight: 700; font-size: 13px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 12px; }
.sec-head h2 { font-size: 38px; font-weight: 800; letter-spacing: -.8px; color: var(--primary-dark); margin-bottom: 16px; }
.sec-head p { color: var(--muted); font-size: 16px; }
.sec-head.left { text-align: left; margin-left: 0; }

/* 场景 */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.scene-card {
  position: relative; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; box-shadow: var(--shadow-sm); transition: transform .28s, box-shadow .28s, border-color .28s;
}
.scene-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: var(--accent); }
.scene-card .ic { width: 60px; height: 60px; border-radius: 16px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; display: grid; place-items: center; margin-bottom: 18px; }
.scene-card .ic svg { width: 28px; height: 28px; stroke: #fff; }
.scene-card h3 { font-size: 19px; color: var(--primary-dark); margin-bottom: 8px; }
.scene-card p { font-size: 14px; color: var(--muted); }
.scene-card .num { position: absolute; top: 18px; right: 22px; font-size: 40px; font-weight: 800; color: var(--bg-tint); }

/* 核心功能 */
.core-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.core-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 34px; box-shadow: var(--shadow-sm); transition: transform .28s, box-shadow .28s; }
.core-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.core-card .head { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.core-card .idx { width: 52px; height: 52px; border-radius: 14px; flex: none; display: grid; place-items: center; font-size: 22px; font-weight: 800; color: #fff; }
.core-card .head h3 { font-size: 21px; color: var(--primary-dark); }
.core-card .head span { display: block; font-size: 13px; color: var(--muted); font-weight: 400; }
.core-card p { color: var(--muted); font-size: 14.5px; margin-bottom: 18px; }
.core-card ul { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.core-card ul li { font-size: 13.5px; color: var(--ink); padding-left: 20px; position: relative; }
.core-card ul li::before { content: ""; position: absolute; left: 0; top: 7px; width: 8px; height: 8px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--gold)); }
.g1 { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.g2 { background: linear-gradient(135deg, var(--accent), var(--gold)); }
.g3 { background: linear-gradient(135deg, #16a34a, #4ade80); }
.g4 { background: linear-gradient(135deg, #0891b2, #22d3ee); }

/* 流程 */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.flow-step { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 18px; text-align: center; box-shadow: var(--shadow-sm); position: relative; }
.flow-step .num { width: 40px; height: 40px; margin: 0 auto 14px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; display: grid; place-items: center; font-weight: 800; }
.flow-step b { display: block; color: var(--primary-dark); font-size: 15px; margin-bottom: 6px; }
.flow-step p { font-size: 12.5px; color: var(--muted); }

/* 特色 */
.spec-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.spec-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; text-align: center; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; }
.spec-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.spec-card .ic { width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 18px; background: linear-gradient(135deg, var(--bg-tint), #fff); border: 1px solid var(--line); color: var(--accent); display: grid; place-items: center; }
.spec-card .ic svg { width: 30px; height: 30px; }
.spec-card h3 { font-size: 17px; color: var(--primary-dark); margin-bottom: 8px; }
.spec-card p { font-size: 13.5px; color: var(--muted); }

/* 核心亮点 */
.hl-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.hl-card {
  position: relative; background: linear-gradient(160deg, #fff, #fff5f7);
  border: 2px solid var(--accent); border-radius: 20px; padding: 38px 34px; box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s;
}
.hl-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.hl-card .tag { position: absolute; top: -15px; left: 32px; background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: #fff; font-size: 12px; font-weight: 700; padding: 5px 15px; border-radius: 99px; letter-spacing: 1px; }
.hl-card .ic { width: 66px; height: 66px; border-radius: 18px; background: linear-gradient(135deg, var(--accent), var(--gold)); color: #fff; display: grid; place-items: center; margin-bottom: 20px; }
.hl-card .ic svg { width: 30px; height: 30px; }
.hl-card h3 { font-size: 23px; color: var(--primary-dark); margin-bottom: 10px; }
.hl-card p { color: var(--muted); font-size: 14.5px; margin-bottom: 16px; }
.hl-card .items { display: flex; flex-wrap: wrap; gap: 8px; }
.hl-card .items span { background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 6px 13px; font-size: 13px; font-weight: 700; color: var(--primary); }
.hl-card .items span.hot { background: #ffeef2; border-color: #fecdd3; color: var(--accent); }

/* 案例 */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.case-thumb { height: 140px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; display: grid; place-items: center; font-size: 28px; font-weight: 800; letter-spacing: 2px; }
.case-body { padding: 26px; }
.case-body .tag { display: inline-block; background: #ffeef2; color: var(--accent); font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 99px; margin-bottom: 14px; }
.case-body h3 { font-size: 18px; color: var(--primary-dark); margin-bottom: 10px; }
.case-body p { font-size: 13.5px; color: var(--muted); }

/* FAQ */
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.faq-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; }
.faq-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.faq-card h3 { font-size: 17px; color: var(--primary-dark); margin-bottom: 12px; padding-left: 14px; position: relative; }
.faq-card h3::before { content: ""; position: absolute; left: 0; top: 4px; width: 4px; height: 18px; border-radius: 3px; background: linear-gradient(180deg, var(--accent), var(--gold)); }
.faq-card p { font-size: 14px; color: var(--muted); line-height: 1.8; }

/* 联系 */
.contact { position: relative; overflow: hidden; color: #fff; background: linear-gradient(135deg, #1e0a3c, var(--primary-dark) 50%, var(--primary)); padding: 90px 0; }
.contact::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px); background-size: 30px 30px; }
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; position: relative; z-index: 2; }
.contact h2 { font-size: 38px; font-weight: 800; letter-spacing: -.8px; margin-bottom: 16px; }
.contact h2 span { color: var(--gold); }
.contact .lead { color: #d9cfee; font-size: 16px; margin-bottom: 30px; max-width: 480px; }
.contact-info { display: grid; gap: 14px; }
.contact-info .row { display: flex; align-items: center; gap: 14px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.14); border-radius: 12px; padding: 16px 20px; }
.contact-info .row .ic { width: 42px; height: 42px; border-radius: 11px; background: rgba(255,255,255,.1); color: var(--gold); display: grid; place-items: center; flex: none; }
.contact-info .row .ic svg { width: 21px; height: 21px; }
.contact-info .row b { display: block; font-size: 13px; color: #c9bde2; font-weight: 500; }
.contact-info .row .val { font-size: 18px; font-weight: 700; color: #fff; }
.contact-qr { background: #fff; border-radius: 20px; padding: 34px; text-align: center; color: var(--ink); box-shadow: var(--shadow-lg); }
.contact-qr img { width: 210px; margin: 0 auto 18px; border-radius: 14px; }
.contact-qr b { display: block; font-size: 19px; color: var(--primary-dark); margin-bottom: 4px; }
.contact-qr p { font-size: 13.5px; color: var(--muted); }

/* 页脚 */
.footer { background: #150a2e; color: #9f91c0; padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 36px; padding-bottom: 40px; }
.footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer p { font-size: 13.5px; line-height: 1.8; }
.footer ul li { margin-bottom: 10px; font-size: 13.5px; }
.footer ul li a:hover { color: #fff; }
.footer .brand { color: #fff; margin-bottom: 14px; }
.footer-bottom { border-top: 1px solid #24174a; padding: 22px 0; font-size: 12.5px; color: #7c6fa6; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.footer-bottom a { color: #9f91c0; }
.footer-bottom a:hover { color: #fff; }

/* 悬浮微信 */
.float-wx { position: fixed; right: 22px; bottom: 22px; z-index: 200; }
.wx-fab { width: 60px; height: 60px; border-radius: 50%; background: linear-gradient(135deg, var(--green), #15803d); color: #fff; display: grid; place-items: center; font-size: 13px; font-weight: 700; line-height: 1.2; text-align: center; cursor: pointer; box-shadow: 0 10px 26px rgba(22,163,74,.4); transition: transform .2s; }
.wx-fab:hover { transform: scale(1.06); }
.wx-pop { position: absolute; right: 0; bottom: 72px; width: 230px; background: #fff; border-radius: 16px; box-shadow: var(--shadow-lg); border: 1px solid var(--line); padding: 20px; text-align: center; opacity: 0; visibility: hidden; transform: translateY(10px); transition: all .25s; }
.wx-pop.show { opacity: 1; visibility: visible; transform: translateY(0); }
.wx-pop img { width: 150px; margin: 0 auto 12px; border-radius: 10px; }
.wx-pop b { display: block; color: var(--primary-dark); font-size: 14px; }
.wx-pop p { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

/* 咨询弹窗 */
.modal-overlay { position: fixed; inset: 0; background: rgba(21,10,46,.64); backdrop-filter: blur(4px); z-index: 300; display: none; align-items: center; justify-content: center; padding: 20px; }
.modal-overlay.show { display: flex; }
.modal { position: relative; background: #fff; border-radius: 20px; max-width: 380px; width: 100%; padding: 36px 30px 30px; text-align: center; box-shadow: 0 40px 90px rgba(0,0,0,.35); animation: modalPop .25s ease; }
@keyframes modalPop { from { transform: scale(.92); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.modal-close { position: absolute; top: 14px; right: 16px; border: none; background: #eef0f7; color: #4a5568; width: 32px; height: 32px; border-radius: 50%; cursor: pointer; font-size: 16px; line-height: 1; }
.modal-close:hover { background: #e2e8f0; }
.modal h3 { color: var(--primary-dark); font-size: 22px; font-weight: 800; margin-bottom: 6px; }
.modal .sub { color: var(--muted); font-size: 14px; margin-bottom: 20px; }
.modal-qr { width: 190px; margin: 0 auto 18px; border-radius: 14px; border: 1px solid var(--line); }
.modal-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; margin-bottom: 10px; font-size: 14px; color: var(--muted); }
.modal-row .val { font-weight: 700; color: var(--accent); font-size: 16px; }
.modal .btn-block { margin-top: 8px; }

/* 滚动淡入 */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* 响应式 */
@media (max-width: 1024px) {
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .hero { padding: 64px 0 84px; }
  .hero-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; }
  .topbar-right { display: none; }
  .header-cta { display: none; }
  .nav-toggle { display: block; }
  .main-nav { position: fixed; inset: 0 0 0 auto; width: 82%; max-width: 340px; background: #fff; z-index: 150; padding: 24px; transform: translateX(100%); transition: transform .3s; box-shadow: var(--shadow-lg); overflow-y: auto; }
  .main-nav.open { transform: translateX(0); }
  .main-nav > ul { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-overlay { position: fixed; inset: 0; background: rgba(21,10,46,.5); z-index: 140; opacity: 0; visibility: hidden; transition: .3s; }
  .nav-overlay.show { opacity: 1; visibility: visible; }
  .stats-band .grid { grid-template-columns: repeat(2, 1fr); }
  .core-grid { grid-template-columns: 1fr; }
  .hero-float { display: none; }
}

@media (max-width: 560px) {
  .scene-grid, .spec-grid, .flow, .case-grid, .footer-grid, .faq-grid, .hl-grid { grid-template-columns: 1fr; }
  .core-card ul { grid-template-columns: 1fr; }
  .sec-head h2 { font-size: 28px; }
  .contact h2 { font-size: 30px; }
  .section { padding: 64px 0; }
  .hero h1 { font-size: 30px; }
  .stats-band .grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}

/* 工具类 */
.text-accent { color: var(--accent); }
.center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 28px; }