:root {
  --brand: #0f766e;
  --brand-dark: #115e59;
  --brand-light: #ccfbf1;
  --accent: #f59e0b;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-deep: #0b1f1d;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px -12px rgba(15, 118, 110, 0.18);
  --shadow-lg: 0 24px 60px -20px rgba(15, 118, 110, 0.28);
  --maxw: 1160px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system,
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 导航 ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.5px;
}
.logo .mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: none; box-shadow: none;
}
.logo .mark img { width: 34px; height: 34px; display: block; }
.logo .sub { color: var(--muted); font-weight: 600; font-size: 13px; }
.nav-links {
  display: flex; gap: 30px; align-items: center;
}
.nav-links a {
  font-size: 15px; color: var(--ink); font-weight: 500;
  position: relative; padding: 6px 0;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--brand); transition: width .25s;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--brand); }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 22px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: all .2s; white-space: nowrap;
}
.btn-primary { background: var(--brand); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--brand); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); }
.btn-light { background: #fff; color: var(--brand-dark); }
.btn-light:hover { background: var(--brand-light); }
.menu-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }

/* ===== Hero ===== */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(20,184,166,.18), transparent 60%),
    radial-gradient(700px 400px at 0% 10%, rgba(245,158,11,.10), transparent 55%),
    var(--bg-soft);
}
.hero-inner {
  padding: 88px 0 96px;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center;
}
.hero .badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid var(--line); color: var(--brand-dark);
  padding: 7px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
  box-shadow: var(--shadow);
}
.hero h1 {
  font-size: 46px; line-height: 1.2; margin: 22px 0 18px; letter-spacing: -0.5px;
}
.hero h1 .hl { color: var(--brand); }
.hero p.lead { font-size: 18px; color: var(--muted); margin: 0 0 30px; max-width: 540px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 32px; margin-top: 40px; }
.hero-stats .num { font-size: 30px; font-weight: 800; color: var(--brand-dark); }
.hero-stats .lbl { font-size: 13px; color: var(--muted); }
.hero-visual {
  background: linear-gradient(160deg, #0f766e, #0b3b39);
  border-radius: 24px; padding: 34px; color: #fff; box-shadow: var(--shadow-lg);
  position: relative; overflow: hidden;
}
.hero-visual::after {
  content: ""; position: absolute; right: -60px; bottom: -60px;
  width: 220px; height: 220px; border-radius: 50%;
  background: rgba(245,158,11,.25); filter: blur(8px);
}
.hero-visual h3 { margin: 0 0 16px; font-size: 20px; }
.hero-visual ul { list-style: none; padding: 0; margin: 0; }
.hero-visual li {
  display: flex; align-items: center; gap: 12px; padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,.12); font-size: 15px;
}
.hero-visual li:last-child { border-bottom: none; }
.hero-visual .dot {
  width: 30px; height: 30px; border-radius: 9px; background: rgba(255,255,255,.14);
  display: grid; place-items: center; font-size: 16px;
}

/* ===== 通用区块 ===== */
section.block { padding: 84px 0; }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-head .eyebrow {
  color: var(--brand); font-weight: 700; letter-spacing: 2px; font-size: 13px;
  text-transform: uppercase;
}
.section-head h2 { font-size: 34px; margin: 12px 0 12px; letter-spacing: -0.5px; }
.section-head p { color: var(--muted); font-size: 16px; margin: 0; }

.bg-soft { background: var(--bg-soft); }

/* 卡片网格 */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; transition: all .25s; box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--brand-light); }
.card .icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: var(--brand-light); color: var(--brand-dark); font-size: 24px; margin-bottom: 18px;
}
.card h3 { margin: 0 0 10px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .tags { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 12px; color: var(--brand-dark); background: var(--brand-light);
  padding: 4px 10px; border-radius: 999px; font-weight: 600;
}

/* 服务列表（带编号） */
.service {
  display: grid; grid-template-columns: 64px 1fr; gap: 22px; align-items: start;
  padding: 28px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line);
}
.service .no {
  width: 56px; height: 56px; border-radius: 16px; background: var(--brand);
  color: #fff; display: grid; place-items: center; font-size: 22px; font-weight: 800;
}
.service h3 { margin: 0 0 8px; font-size: 20px; }
.service p { margin: 0 0 12px; color: var(--muted); }
.service ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: 14px; }
.service ul li { margin: 4px 0; }

/* 流程 */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step { text-align: center; padding: 24px 16px; }
.step .circle {
  width: 48px; height: 48px; border-radius: 50%; margin: 0 auto 14px;
  background: var(--brand-light); color: var(--brand-dark); font-weight: 800;
  display: grid; place-items: center; font-size: 18px;
}
.step h4 { margin: 0 0 6px; font-size: 16px; }
.step p { margin: 0; font-size: 14px; color: var(--muted); }

/* CTA 条 */
.cta {
  background: linear-gradient(135deg, #0f766e, #0b3b39);
  border-radius: 24px; padding: 56px; color: #fff; text-align: center;
  position: relative; overflow: hidden;
}
.cta::before {
  content: ""; position: absolute; left: -40px; top: -40px; width: 200px; height: 200px;
  background: rgba(245,158,11,.2); border-radius: 50%;
}
.cta h2 { font-size: 32px; margin: 0 0 14px; }
.cta p { color: rgba(255,255,255,.82); margin: 0 0 28px; font-size: 16px; }

/* FAQ */
.faq-item { border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 14px; background: #fff; overflow: hidden; }
.faq-q {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  padding: 20px 22px; font-size: 16px; font-weight: 600; color: var(--ink);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq-q .plus { color: var(--brand); font-size: 22px; transition: transform .25s; }
.faq-item.open .faq-q .plus { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a .inner { padding: 0 22px 20px; color: var(--muted); font-size: 15px; }

/* 联系表单 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-info h3 { margin: 0 0 16px; font-size: 22px; }
.contact-info p { color: var(--muted); }
.info-row { display: flex; gap: 12px; align-items: flex-start; margin: 16px 0; }
.info-row .ic { width: 40px; height: 40px; border-radius: 10px; background: var(--brand-light); color: var(--brand-dark); display: grid; place-items: center; font-size: 18px; flex: none; }
.info-row .txt strong { display: block; font-size: 15px; }
.info-row .txt span { color: var(--muted); font-size: 14px; }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; color: var(--ink); background: var(--bg-soft); transition: border .2s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--brand); background: #fff;
}
.field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 4px; }
.alert { padding: 12px 16px; border-radius: var(--radius-sm); font-size: 14px; margin-bottom: 16px; display: none; }
.alert.ok { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.alert.err { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }

/* 页脚 */
.footer { background: var(--bg-deep); color: #cbd5e1; padding: 56px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer .logo { color: #fff; }
.footer .logo .sub { color: #94a3b8; }
.footer p.desc { color: #94a3b8; font-size: 14px; margin: 16px 0 0; max-width: 320px; }
.footer h4 { color: #fff; font-size: 15px; margin: 0 0 16px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer ul li { margin: 10px 0; font-size: 14px; }
.footer ul li a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 22px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; color: #94a3b8;
}
.footer-bottom a:hover { color: #fff; }

/* 响应式 */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero h1 { font-size: 38px; }
  .grid-3, .grid-2, .contact-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta { padding: 36px 24px; }
  .section-head h2 { font-size: 28px; }
}

/* 导航滚动阴影 */
.nav.scrolled { box-shadow: 0 6px 24px -10px rgba(15, 118, 110, 0.28); }

/* 返回顶部按钮 */
#backTop {
  position: fixed; right: 22px; bottom: 22px; width: 46px; height: 46px;
  border: none; border-radius: 50%; background: var(--brand); color: #fff;
  font-size: 20px; line-height: 1; cursor: pointer; box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(8px); transition: all .3s; z-index: 60;
}
#backTop.show { opacity: 1; visibility: visible; transform: translateY(0); }
#backTop:hover { background: var(--brand-dark); }

/* 大屏微调 */
@media (min-width: 1400px) {
  :root { --maxw: 1240px; }
}

/* 平板 */
@media (max-width: 1100px) {
  .container { padding: 0 20px; }
  .hero-inner { gap: 32px; }
}

/* 移动端导航与菜单细化 */
@media (max-width: 980px) {
  .nav { position: sticky; }
  .menu-toggle { display: block; font-size: 22px; color: var(--brand-dark); padding: 6px; }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0; background: #fff;
    flex-direction: column; gap: 0; padding: 6px 20px 16px;
    border-bottom: 1px solid var(--line); box-shadow: 0 12px 24px -16px rgba(0,0,0,.2);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 4px; border-bottom: 1px solid var(--line); width: 100%; }
  .nav-links a:last-child { border-bottom: none; margin-top: 8px; }
  .hero h1 { font-size: 34px; }
  .section-head h2 { font-size: 28px; }
}

/* 小屏手机 */
@media (max-width: 560px) {
  body { font-size: 15px; }
  .hero-inner { padding: 56px 0 64px; }
  .hero h1 { font-size: 28px; }
  .hero p.lead { font-size: 16px; }
  .hero-stats { gap: 18px; }
  .hero-stats .num { font-size: 24px; }
  .hero-visual { padding: 24px; }
  .section-head { margin-bottom: 36px; }
  section.block { padding: 56px 0; }
  .card, .service, .form-card, .settings-form, .upload-box { padding: 22px; }
  .grid, .grid-2, .grid-3, .contact-grid, .footer-grid, .steps { gap: 16px; }
  .steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .cta { padding: 32px 22px; }
  .cta h2 { font-size: 24px; }
  .section-head h2 { font-size: 24px; }
  .toolbar input { min-width: 100%; }
  .data-table { font-size: 13px; }
  .data-table th, .data-table td { padding: 9px 10px; }
}

/* ===== Hero 产品界面模拟（浏览器窗口 + 迷你看板） ===== */
.hv-bar { display: flex; align-items: center; gap: 6px; margin-bottom: 18px; }
.hv-bar span { width: 10px; height: 10px; border-radius: 50%; }
.hv-bar span:nth-child(1) { background: #f87171; }
.hv-bar span:nth-child(2) { background: #fbbf24; }
.hv-bar span:nth-child(3) { background: #34d399; }
.hv-bar em { margin-left: auto; font-style: normal; font-size: 12px; color: rgba(255,255,255,.6); }
.hv-chart {
  margin-top: 22px; background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12); border-radius: 14px; padding: 16px 18px;
}
.hv-chart-title { font-size: 13px; color: rgba(255,255,255,.75); margin-bottom: 12px; }
.bars { display: flex; align-items: flex-end; gap: 8px; height: 70px; }
.bars i {
  flex: 1; border-radius: 6px 6px 2px 2px; height: var(--h, 40%); min-height: 8px;
  background: linear-gradient(180deg, #2dd4bf, #0d9488); opacity: .92;
  transition: transform .3s;
}
.bars i:hover { transform: scaleY(1.05); }
.bars i:last-child { background: linear-gradient(180deg, #fbbf24, #f59e0b); }
.hv-chart-meta { display: flex; justify-content: space-between; margin-top: 10px; font-size: 12px; color: rgba(255,255,255,.7); }
.hv-chart-meta .up { color: #fde68a; font-weight: 700; }

/* ===== 用户评价 ===== */
.card.quote { display: flex; flex-direction: column; }
.quote-mark { font-size: 34px; line-height: 1; color: var(--brand-light); font-weight: 800; margin-bottom: 8px; }
.quote-text { font-size: 15px; color: var(--ink); flex: 1; }
.quote-who { margin-top: 16px; font-size: 13px; color: var(--muted); font-weight: 600; }

/* ===== 滚动浮现动画 ===== */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}
@media print {
  .reveal { opacity: 1 !important; transform: none !important; }
  #backTop, .nav { display: none !important; }
}

/* ===== 智慧失物招领解决方案页 ===== */
.hero-lf {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, #0f766e, #0b3b39);
  color: #fff;
}
.hero-lf .hero-inner { color: #fff; }
.hero-lf .badge { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.22); color: #fff; box-shadow: none; }
.hero-lf h1 { color: #fff; }
.hero-lf h1 .hl { color: #fde68a; }
.hero-lf p.lead { color: rgba(255,255,255,.86); }
.hero-lf .hero-stats .num { color: #fde68a; }
.hero-lf .lf-hero-img {
  border-radius: 18px; box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,.16); width: 100%; height: auto;
}
.hero-lf .hero-actions .btn-primary { background: #fff; color: var(--brand-dark); }
.hero-lf .hero-actions .btn-primary:hover { background: var(--brand-light); }
.hero-lf .hero-actions .btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.hero-lf .hero-actions .btn-ghost:hover { border-color: #fff; }

/* 图片展示块 */
.shot {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
}
.shot img { width: 100%; height: auto; display: block; }
.shot figcaption { padding: 12px 16px; font-size: 13px; color: var(--muted); border-top: 1px solid var(--line); background: var(--bg-soft); }
.figure-grid { display: grid; gap: 24px; }
.figure-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.figure-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }

/* 系统目标三栏 */
.goals { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.goal { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.goal h3 { margin: 0 0 18px; font-size: 20px; color: var(--brand-dark); display: flex; align-items: center; gap: 10px; }
.goal ul { list-style: none; padding: 0; margin: 0; }
.goal li { padding: 12px 0; border-bottom: 1px dashed var(--line); }
.goal li:last-child { border-bottom: none; }
.goal li b { display: block; font-size: 15px; color: var(--ink); margin-bottom: 2px; }
.goal li span { font-size: 14px; color: var(--muted); }

/* 三端联动 */
.ends { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.end { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.end .end-shot { background: var(--bg-soft); padding: 18px; border-bottom: 1px solid var(--line); }
.end .end-shot img { border-radius: 10px; border: 1px solid var(--line); width: 100%; }
.end .end-body { padding: 22px; flex: 1; }
.end .end-body .role { font-size: 13px; color: var(--brand); font-weight: 700; letter-spacing: .5px; }
.end .end-body h3 { margin: 6px 0 8px; font-size: 19px; }
.end .end-body p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }

/* 核心优势 */
.adv-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

/* 端到端功能：图文左右 */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; margin-bottom: 56px; }
.feature-row:last-child { margin-bottom: 0; }
.feature-row.reverse .feature-media { order: 2; }
.feature-text h3 { font-size: 24px; margin: 0 0 10px; }
.feature-text .ft-eyebrow { color: var(--brand); font-weight: 700; font-size: 13px; letter-spacing: 2px; text-transform: uppercase; }
.feature-list { list-style: none; padding: 0; margin: 18px 0 0; }
.feature-list li { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.feature-list li:last-child { border-bottom: none; }
.feature-list .fi { flex: none; width: 30px; height: 30px; border-radius: 9px; background: var(--brand-light); color: var(--brand-dark); display: grid; place-items: center; font-weight: 800; font-size: 14px; }
.feature-list .ft b { display: block; font-size: 15px; color: var(--ink); }
.feature-list .ft span { font-size: 14px; color: var(--muted); }

/* 流程步骤（带连线） */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; margin-top: 36px; }
.flow-3 { grid-template-columns: repeat(3, 1fr); }
.flow-step { position: relative; text-align: center; padding: 22px 12px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.flow-step .num {
  width: 44px; height: 44px; border-radius: 50%; margin: 0 auto 12px;
  background: var(--brand); color: #fff; display: grid; place-items: center; font-size: 18px; font-weight: 800;
}
.flow-step h4 { margin: 0 0 6px; font-size: 16px; }
.flow-step p { margin: 0; font-size: 13px; color: var(--muted); }

/* 应用场景卡片图 */
.scene .card { padding: 0; overflow: hidden; }
.scene .card img { width: 100%; height: 180px; object-fit: cover; }
.scene .card .scene-body { padding: 22px; }
.scene .card h3 { margin: 0 0 8px; font-size: 19px; }
.scene .card p { margin: 0; color: var(--muted); font-size: 14px; }

/* 响应式补充 */
@media (max-width: 980px) {
  .goals, .ends, .figure-grid.cols-3, .figure-grid.cols-2 { grid-template-columns: 1fr; }
  .feature-row, .feature-row.reverse { grid-template-columns: 1fr; }
  .feature-row.reverse .feature-media { order: 0; }
  .flow, .flow-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .flow, .flow-3 { grid-template-columns: 1fr; }
}

/* ============================================================
   设计系统升级（UI 设计师 · 2026-09-28）
   目标：更统一、更具宣传质感、更易用（转化导向）
   ============================================================ */

/* 导航：右侧推广 CTA + 右侧聚拢 */
.nav-links { margin-left: auto; }
.nav-cta { margin-left: 14px; padding: 9px 18px; font-size: 14px; }
@media (max-width: 980px) {
  .nav-cta { display: none; }
}

/* 内页头图 band（联系我们 / 常见问题 等内页统一头部） */
.page-hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #0f766e, #0b3b39);
  color: #fff; padding: 72px 0 80px; text-align: center;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
  background-size: 22px 22px;
}
.page-hero::after {
  content: ""; position: absolute; left: -40px; top: -50px; width: 220px; height: 220px;
  border-radius: 50%; background: rgba(245,158,11,.18); filter: blur(10px);
  z-index: 1; pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero .eyebrow { color: #fde68a; font-weight: 700; letter-spacing: 2px; font-size: 13px; text-transform: uppercase; }
.page-hero h1 { color: #fff; font-size: 38px; margin: 14px 0 14px; letter-spacing: -.5px; }
.page-hero p { color: rgba(255,255,255,.85); font-size: 17px; max-width: 640px; margin: 0 auto; }

/* 区块标题：胶囊 eyebrow + 渐变下划线 */
.section-head .eyebrow {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  background: linear-gradient(135deg, var(--brand-light), #e6fffa);
  color: var(--brand-dark); letter-spacing: 1px; font-size: 12px; text-transform: uppercase;
}
.section-head h2::after {
  content: ""; display: block; width: 46px; height: 4px; border-radius: 2px;
  margin: 16px auto 0; background: linear-gradient(90deg, var(--brand), var(--accent));
}
.section-head[style*="text-align:left"] h2::after { margin: 16px 0 0; }

/* Hero 点阵纹理（提升设计质感，不干扰内容） */
.hero-inner { position: relative; z-index: 1; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image: radial-gradient(rgba(15,118,110,.05) 1px, transparent 1px);
  background-size: 22px 22px;
}
.hero-lf .hero-inner { position: relative; z-index: 1; }
.hero-lf::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 22px 22px;
}

/* 卡片图标渐变 + 轻微投影 */
.card .icon {
  background: linear-gradient(135deg, var(--brand), #14b8a6); color: #fff;
  box-shadow: 0 8px 18px -8px rgba(15,118,110,.5);
}

/* 主按钮：渐变 + 悬停光晕上浮 */
.btn-primary { background: linear-gradient(135deg, var(--brand), #14b8a6); }
.btn-primary:hover {
  background: linear-gradient(135deg, var(--brand-dark), var(--brand));
  box-shadow: 0 12px 26px -12px rgba(15,118,110,.6); transform: translateY(-1px);
}

/* Hero 标题渐变高亮字（绑定品牌主色 + 暖橙点缀，强化宣传感） */
.hero h1 .hl {
  background: linear-gradient(135deg, var(--brand), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* 页脚顶部渐变条 */
.footer::before {
  content: ""; display: block; height: 4px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
}

/* ============================================================
   投产标准补充：无障碍 + 移动端转化（2026-09-28）
   ============================================================ */

/* 跳转到主内容（键盘用户可跳过导航；仅在获得焦点时可见） */
.skip-link {
  position: absolute; left: 16px; top: -64px; z-index: 100;
  background: #fff; color: var(--brand-dark); font-weight: 700; font-size: 14px;
  padding: 10px 18px; border-radius: 999px; border: 1px solid var(--brand);
  box-shadow: var(--shadow); text-decoration: none;
  transition: top .2s ease;
}
.skip-link:focus { top: 14px; }

/* 统一键盘焦点可见性（可达性投产要求） */
a:focus-visible, button:focus-visible, [tabindex]:focus-visible,
input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}
/* 表单元素原本在 :focus 时移除了 outline，这里为键盘焦点补回可见环 */
.field input:focus-visible, .field textarea:focus-visible, .field select:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* 移动端菜单内 CTA（桌面端用 .nav-cta） */
.mobile-cta { display: none; }
@media (max-width: 980px) {
  .mobile-cta {
    display: block; text-align: center; margin: 12px 0 4px;
    padding: 12px 18px; border-radius: 999px; border-bottom: none;
    background: linear-gradient(135deg, var(--brand), #14b8a6);
    color: #fff; font-weight: 700; font-size: 15px;
  }
}

/* ===== 产品视频展示（lost-found）===== */
.video-frame{max-width:900px;margin:0 auto;border-radius:16px;overflow:hidden;
  box-shadow:0 20px 50px -18px rgba(15,118,110,.35);border:1px solid rgba(15,118,110,.15)}
.video-frame video{display:block;width:100%;aspect-ratio:16/9;background:#0f172a}

/* ===== 联系页微信二维码 ===== */
.wechat-qr{margin:12px 0 0;padding:12px;background:#fff;border:1px solid var(--line);
  border-radius:12px;display:inline-block}
.wechat-qr img{display:block;width:150px;height:150px;object-fit:contain}