/* ===== 蓝欣暖通官网 全局样式 ===== */

/* 无障碍：跳转主内容（键盘可达，视觉聚焦时显示） */
.skip-link { position:absolute; left:-9999px; top:0; z-index:999; background:var(--primary); color:#fff; padding:10px 18px; border-radius:0 0 10px 0; font-weight:600; }
.skip-link:focus { left:0; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
  .reveal { opacity:1 !important; transform:none !important; }
}

:root {
  --primary: #1a8cff;          /* 明亮蓝 */
  --primary-dark: #0b6fd6;
  --primary-light: #e8f3ff;
  --accent: #00c2a8;           /* 明亮青绿 */
  --ink: #16293b;              /* 主文字 */
  --text: #4a5a6a;             /* 次要文字 */
  --muted: #8a99a8;
  --bg: #ffffff;
  --bg-soft: #f3f9ff;
  --bg-dark: #0d1b2a;
  --border: #e4ecf3;
  --shadow: 0 10px 30px rgba(26, 140, 255, .10);
  --shadow-lg: 0 20px 50px rgba(13, 27, 42, .14);
  --radius: 14px;
  --maxw: 1200px;
  --header-h: 72px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: color .25s; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 999px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: none; transition: transform .2s, box-shadow .25s, background .25s;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 8px 20px rgba(31,111,235,.28); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-ghost { background: #fff; color: var(--primary); border: 1.5px solid var(--border); }
.btn-ghost:hover { border-color: var(--primary); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* ===== 顶部导航 ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; height: var(--header-h); z-index: 100;
  background: rgba(255,255,255,.85); backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent; transition: border-color .3s, box-shadow .3s;
}
.header.scrolled { border-color: var(--border); box-shadow: 0 4px 20px rgba(13,27,42,.06); }
.nav { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; color: var(--ink); font-size: 19px; letter-spacing: .5px; }
.brand .logo {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: grid; place-items: center; color: #fff; font-size: 18px; font-weight: 900;
}
.brand small { display: block; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: 1px; }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a { color: var(--ink); font-weight: 500; position: relative; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--primary); transition: width .3s;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--primary); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-cta .phone { font-weight: 700; color: var(--primary); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; }
.menu-toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s; }

/* ===== 通用区块 ===== */
section { padding: 92px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .eyebrow {
  display: inline-block; color: var(--primary); font-weight: 700; letter-spacing: 2px;
  font-size: 13px; text-transform: uppercase; margin-bottom: 14px;
}
.section-head h2 { color: var(--ink); font-size: 34px; line-height: 1.25; margin-bottom: 16px; }
.section-head p { color: var(--text); font-size: 17px; }

/* ===== Hero（明亮 + 配图） ===== */
.hero {
  position: relative; min-height: 88vh; display: flex; align-items: center;
  padding-top: calc(var(--header-h) + 20px); padding-bottom: 60px;
  background:
    radial-gradient(900px 500px at 88% -10%, rgba(0,194,168,.16), transparent 55%),
    radial-gradient(900px 520px at 0% 110%, rgba(26,140,255,.14), transparent 50%),
    linear-gradient(135deg, #eaf3ff 0%, #f4fbff 55%, #eafaf7 100%);
  color: var(--ink); overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero h1 { font-size: 46px; line-height: 1.18; color: var(--ink); margin-bottom: 22px; font-weight: 800; }
.hero h1 .hl { color: var(--primary); }
.hero p.lead { font-size: 18px; color: var(--text); max-width: 520px; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 50px; }
.hero-stats .num { font-size: 34px; font-weight: 800; color: var(--primary); }
.hero-stats .lbl { font-size: 14px; color: var(--muted); }
.hero-visual {
  position: relative; border-radius: 22px; overflow: hidden;
  box-shadow: 0 30px 60px rgba(26,140,255,.22); border: 6px solid #fff;
}
.hero-visual img { width: 100%; height: 100%; max-height: 460px; object-fit: cover; display: block; }
.badge-pulse {
  position: absolute; top: 18px; right: 18px; background: rgba(255,255,255,.92); color: var(--accent);
  padding: 7px 14px; border-radius: 999px; font-size: 12px; font-weight: 700; display: flex; align-items: center; gap: 6px;
  box-shadow: 0 6px 18px rgba(13,27,42,.12);
}
.badge-pulse i { width: 8px; height: 8px; border-radius: 50%; background: #4fd1c5; box-shadow: 0 0 0 0 rgba(79,209,197,.6); animation: pulse 1.8s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(79,209,197,.6)} 70%{box-shadow:0 0 0 10px rgba(79,209,197,0)} 100%{box-shadow:0 0 0 0 rgba(79,209,197,0)} }

/* ===== 服务卡片 ===== */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 34px 28px; transition: transform .3s, box-shadow .3s, border-color .3s;
}
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: transparent; }
.service-card .ic {
  width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center;
  background: var(--primary-light); color: var(--primary); font-size: 26px; margin-bottom: 20px;
  transition: background .3s, color .3s;
}
.service-card:hover .ic { background: var(--primary); color: #fff; }
.service-card h3 { color: var(--ink); font-size: 20px; margin-bottom: 12px; }
.service-card p { font-size: 15px; }

/* ===== 关于/特性 ===== */
.about { background: var(--bg-soft); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-img {
  border-radius: var(--radius); min-height: 420px; position: relative; overflow: hidden;
  background: linear-gradient(160deg, var(--primary), var(--accent));
  display: grid; place-items: center; color: #fff;
}
.about-img .deco { font-size: 90px; opacity: .9; }
.about-points { display: grid; gap: 18px; margin-top: 26px; }
.about-points li { display: flex; gap: 14px; align-items: flex-start; }
.about-points .dot { flex: none; width: 26px; height: 26px; border-radius: 8px; background: var(--primary-light); color: var(--primary); display: grid; place-items: center; font-size: 14px; font-weight: 800; margin-top: 3px; }
.about-points h4 { color: var(--ink); font-size: 16px; margin-bottom: 2px; }

/* ===== 数据条 ===== */
.metrics { background: var(--bg-dark); color: #fff; }
.metrics-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 30px; text-align: center; }
.metrics .num { font-size: 42px; font-weight: 800; color: #4fd1c5; }
.metrics .lbl { color: #9fb4cc; margin-top: 4px; }

/* ===== 流程 / 步骤 ===== */
.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.step { position: relative; padding: 28px 22px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); text-align: center; }
.step .no { width: 44px; height: 44px; margin: 0 auto 16px; border-radius: 50%; background: linear-gradient(135deg,var(--primary),var(--accent)); color:#fff; display:grid; place-items:center; font-weight:800; }
.step h4 { color: var(--ink); margin-bottom: 8px; }
.step p { font-size: 14px; }

/* ===== 产品卡 ===== */
.product-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 26px; }
.product-card {
  background:#fff; border:1px solid var(--border); border-radius: var(--radius); overflow:hidden;
  transition: transform .3s, box-shadow .3s;
}
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.product-card .thumb { height: 180px; display:grid; place-items:center; font-size: 64px; color:#fff;
.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
  background: linear-gradient(135deg, var(--primary), var(--accent)); }
.product-card:nth-child(even) .thumb { background: linear-gradient(135deg, #14304d, #16b8a6); }
.product-card .body { padding: 24px; }
.product-card .body h3 { color: var(--ink); font-size: 19px; margin-bottom: 10px; }
.product-card .body p { font-size: 14px; margin-bottom: 14px; }
.product-card .tags { display:flex; flex-wrap:wrap; gap:8px; }
.product-card .tag { font-size:12px; background: var(--bg-soft); color: var(--primary); padding: 4px 10px; border-radius: 999px; }

/* ===== 联系区 ===== */
.contact { background: var(--bg-soft); }
.contact-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.contact-info { display:grid; gap: 22px; }
.info-item { display:flex; gap:16px; background:#fff; padding: 20px 22px; border-radius: var(--radius); border:1px solid var(--border); }
.info-item .ic { flex:none; width: 46px; height:46px; border-radius: 12px; background: var(--primary-light); color: var(--primary); display:grid; place-items:center; font-size:20px; }
.info-item h4 { color: var(--ink); font-size: 15px; margin-bottom: 2px; }
.info-item p { font-size: 15px; color: var(--text); }
.contact-form { background:#fff; padding: 34px; border-radius: var(--radius); box-shadow: var(--shadow); border:1px solid var(--border); }
.contact-form h3 { color: var(--ink); margin-bottom: 20px; font-size: 22px; }
.field { margin-bottom: 16px; }
.field label { display:block; font-size: 14px; color: var(--ink); margin-bottom: 7px; font-weight:600; }
.field input, .field textarea {
  width:100%; padding: 12px 14px; border:1px solid var(--border); border-radius: 10px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: #fbfdff; transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus { outline:none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(31,111,235,.12); }
.field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 10px; }
.form-ok { display:none; background:#e7f8f4; color:#0b7d6e; border:1px solid #b7e6dd; padding: 12px 14px; border-radius:10px; font-size:14px; margin-bottom:14px; }
.form-err { display:none; background:#ffeaea; color:#c0392b; border:1px solid #f5c2c2; padding:10px 14px; border-radius:10px; font-size:14px; margin-bottom:14px; }

/* 浮动联系入口 */
.floating-contact { position:fixed; right:20px; bottom:22px; z-index:600; display:flex; flex-direction:column; gap:12px; }
.floating-contact .fc-btn { width:52px; height:52px; border-radius:50%; display:grid; place-items:center; font-size:22px; color:#fff; background:var(--primary); box-shadow:var(--shadow-lg); border:none; cursor:pointer; text-decoration:none; transition:transform .2s, background .2s; }
.floating-contact .fc-call { background:linear-gradient(135deg,var(--primary),var(--accent)); }
.floating-contact .fc-wx { background:#2cae6b; }
.floating-contact .fc-btn:hover { transform:translateY(-3px) scale(1.05); }
.floating-contact .fc-tip { position:absolute; right:64px; bottom:16px; background:var(--bg-dark); color:#fff; font-size:13px; padding:8px 12px; border-radius:10px; white-space:nowrap; opacity:0; transform:translateX(8px); transition:opacity .25s, transform .25s; pointer-events:none; }
.floating-contact .fc-tip.show { opacity:1; transform:none; }
@media (max-width:680px){ .floating-contact{ right:14px; bottom:16px; } .floating-contact .fc-btn{ width:46px; height:46px; font-size:19px; } }

/* ===== 页脚 ===== */
.footer { background: var(--bg-dark); color: #9fb4cc; padding: 60px 0 28px; }
.footer-grid { display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
.footer .brand { color:#fff; margin-bottom: 16px; }
.footer p.desc { font-size: 14px; max-width: 320px; }
.footer h5 { color:#fff; font-size: 15px; margin-bottom: 16px; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a:hover { color:#4fd1c5; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.10); padding-top: 22px; display:flex; justify-content: space-between; flex-wrap: wrap; gap:10px; font-size: 13px; }

/* ===== 滚动出现动画 ===== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ===== 新闻动态 / 服务号文章 ===== */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  transition: transform .3s, box-shadow .3s; color: inherit; display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.news-cover { height: 170px; background-size: cover; background-position: center; background-color: var(--primary-light); }
.news-cover--ph { display: grid; place-items: center; font-size: 46px; color: var(--primary); }
.news-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.news-date { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.news-body h3 { color: var(--ink); font-size: 18px; margin-bottom: 10px; line-height: 1.4; }
.news-body p { font-size: 14px; margin-bottom: 14px; flex: 1; }
.news-more { color: var(--primary); font-weight: 600; font-size: 14px; }
@media (max-width: 992px) { .news-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 680px) { .news-grid { grid-template-columns: 1fr; } }

/* ===== 深色模式 ===== */
[data-theme="dark"] {
  --bg: #0f172a; --bg-soft: #13203a; --bg-dark: #060f1e;
  --ink: #e8eef6; --text: #aab8c8; --muted: #7d8da0;
  --primary-light: #10243f; --border: #24344e;
  --shadow: 0 10px 30px rgba(0,0,0,.45); --shadow-lg: 0 20px 45px rgba(0,0,0,.5);
}
[data-theme="dark"] .nav, [data-theme="dark"] .ve-bar { background: rgba(13,24,40,.92); }
[data-theme="dark"] .contact-form, [data-theme="dark"] .service-card, [data-theme="dark"] .news-card,
[data-theme="dark"] .product-card, [data-theme="dark"] .info-item, [data-theme="dark"] .login-box,
[data-theme="dark"] .panel, [data-theme="dark"] .admin-wrap { background: #16233b; color: var(--ink); }
[data-theme="dark"] .field input, [data-theme="dark"] .field textarea, [data-theme="dark"] .field select,
[data-theme="dark"] .login-box input, [data-theme="dark"] .admin-wrap input { background: #0f1b30; color: var(--ink); border-color: var(--border); }
[data-theme="dark"] .section:nth-child(even), [data-theme="dark"] .metrics { background: #0c1626; }
[data-theme="dark"] .news-cover { background-color: #10243f; }

/* 主题切换按钮（挂到浮动入口） */
.fc-theme { background: #f5a623 !important; }

/* ===== 粘性底部 CTA ===== */
.sticky-cta {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 590;
  background: rgba(13,27,42,.96); color: #fff; display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 22px; transform: translateY(110%); transition: transform .35s ease;
  box-shadow: 0 -10px 30px rgba(0,0,0,.25);
}
.sticky-cta.show { transform: none; }
.sticky-cta .sc-text { font-size: 15px; }
.sticky-cta .sc-text b { color: #4fd1c5; }
.sticky-cta .sc-actions { display: flex; gap: 10px; align-items: center; }
.sticky-cta a.sc-call { color: #fff; text-decoration: none; font-weight: 700; white-space: nowrap; }
@media (max-width: 680px) { .sticky-cta .sc-text { font-size: 13px; } .sticky-cta { padding: 10px 14px; } }

/* ===== 常见问题 FAQ ===== */
.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: var(--bg); border: 1px solid var(--border); border-radius: 14px; padding: 4px 22px; transition: box-shadow .25s, border-color .25s; }
.faq-item[open] { box-shadow: var(--shadow); border-color: var(--primary); }
.faq-item summary { list-style: none; cursor: pointer; padding: 18px 0; font-weight: 700; color: var(--ink); font-size: 17px; display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 24px; color: var(--primary); transition: transform .25s; line-height: 1; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-a { padding: 0 0 20px; color: var(--text); line-height: 1.8; font-size: 15px; }

/* ===== 报价计算器 ===== */
.calc-card { max-width: 820px; margin: 0 auto; background: var(--bg); border: 1px solid var(--border); border-radius: 18px; padding: 30px; box-shadow: var(--shadow); }
.calc-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px; margin-bottom: 20px; }
.calc-row .field { margin-bottom: 0; }
.calc-row input, .calc-row select { width: 100%; padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border); font-size: 15px; font-family: inherit; color: var(--ink); background: var(--bg); }
.calc-result { display: none; margin-top: 18px; padding: 18px 20px; border-radius: 12px; font-size: 16px; }
.calc-result.ok { display: block; background: #e7f8f4; color: #0b7d6e; border: 1px solid #b7e6dd; }
.calc-result.err { display: block; background: #ffeaea; color: #c0392b; border: 1px solid #f5c2c2; }
.calc-result b { font-size: 20px; }
.calc-sub { font-size: 13px; opacity: .85; }
@media (max-width: 680px) { .calc-row { grid-template-columns: 1fr; } }

/* ===== 后台访问密码 ===== */
.login-gate { position: fixed; inset: 0; background: linear-gradient(135deg, #0d1b2a, #14304d); display: flex; align-items: center; justify-content: center; z-index: 999; }
.login-gate.hidden { display: none; }
.login-box { background: #fff; border-radius: 16px; padding: 38px 34px; width: 340px; max-width: 90vw; box-shadow: 0 30px 60px rgba(0,0,0,.3); text-align: center; }
.login-box .lock-ico { font-size: 40px; margin-bottom: 8px; }
.login-box h2 { color: var(--ink); font-size: 22px; margin-bottom: 6px; }
.login-box p { color: var(--muted); font-size: 14px; margin-bottom: 22px; }
.login-box .field { text-align: left; margin-bottom: 16px; }
.login-box .err { color: #d33; font-size: 13px; min-height: 18px; margin-bottom: 12px; text-align: left; }

/* ===== 后台图片选择器 ===== */
.img-picker { border: 1px dashed var(--border); border-radius: 12px; padding: 14px; background: #fbfdff; margin-top: 6px; }
.img-picker .row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.img-picker input[type=text] { flex: 1; min-width: 160px; }
.img-picker .pv { margin-top: 12px; display: none; align-items: center; gap: 12px; }
.img-picker .pv.show { display: flex; }
.img-picker .pv img { max-height: 120px; max-width: 200px; border-radius: 8px; border: 1px solid var(--border); object-fit: cover; }
.img-picker .del-img { background: #ffe9e9; color: #d33; border: none; padding: 5px 12px; border-radius: 8px; cursor: pointer; font-size: 13px; }

/* ===== 卡片配图（服务/资质） ===== */
.service-card .media { height: 150px; border-radius: 12px; overflow: hidden; margin-bottom: 18px; background: var(--primary-light); }
.service-card .media img { width: 100%; height: 100%; object-fit: cover; }

/* ===== 前台可视化编辑 ===== */
.ve-on .reveal { opacity: 1 !important; transform: none !important; }
.ve-on { padding-top: 46px; }
.ve-on .header { top: 46px !important; }
.ve-edit { outline: 1px dashed rgba(26,140,255,.5); border-radius: 4px; padding: 2px 4px; cursor: text; transition: outline-color .15s, background .15s; }
.ve-edit:hover { outline-color: rgba(26,140,255,.9); background: rgba(26,140,255,.06); }
.ve-edit:focus { outline: 2px solid var(--primary); background: #fff; }
.ve-img { cursor: pointer; }
.ve-img:hover { outline: 2px solid var(--primary); outline-offset: 3px; }
.ve-img::after { content: "🖼 换图"; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); background: rgba(13,27,42,.82); color: #fff; font-size: 13px; padding: 5px 10px; border-radius: 8px; opacity: 0; pointer-events: none; transition: opacity .15s; white-space: nowrap; }
.ve-img { position: relative; }
.ve-img:hover::after { opacity: 1; }
.ve-bar { position: fixed; top: 0; left: 0; right: 0; z-index: 998; background: #0d1b2a; color: #fff; display: flex; align-items: center; gap: 14px; padding: 10px 18px; box-shadow: 0 4px 20px rgba(0,0,0,.3); font-size: 14px; }
.ve-bar .ve-title { font-weight: 700; }
.ve-bar .ve-hint { opacity: .8; }
.ve-bar .ve-status { margin-left: auto; opacity: 0; transition: opacity .3s; }
.ve-bar .ve-status.show { opacity: 1; }
.ve-bar button { border: none; padding: 7px 16px; border-radius: 8px; cursor: pointer; font-weight: 600; color: #fff; }
.ve-bar .ve-save { background: var(--primary); }
.ve-bar .ve-exit { background: #33415a; }
.ve-imgpop { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 1001; background: #fff; border: 1px solid var(--border); border-radius: 14px; box-shadow: 0 20px 50px rgba(0,0,0,.3); padding: 16px 18px; width: min(460px, 92vw); display: none; }
.ve-imgpop.show { display: block; }
.ve-imgpop .ve-row { display: flex; gap: 8px; flex-wrap: wrap; }
.ve-imgpop input[type=text] { flex: 1; min-width: 160px; }
.ve-imgpop .ve-pv { margin-top: 10px; display: none; }
.ve-imgpop .ve-pv.show { display: block; }
.ve-imgpop .ve-pv img { max-height: 140px; border-radius: 8px; border: 1px solid var(--border); }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
  .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding: 120px 0 80px; }
  .hero-visual { order: -1; }
  .services-grid, .metrics-grid, .steps, .product-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  section { padding: 64px 0; }
  .section-head h2, .hero h1 { font-size: 28px; }
  .hero h1 { font-size: 32px; }
  .nav-links {
    position: fixed; top: var(--header-h); left: 0; right: 0; background: #fff; flex-direction: column;
    gap: 0; padding: 12px 24px 24px; border-bottom: 1px solid var(--border);
    transform: translateY(-130%); transition: transform .35s; box-shadow: var(--shadow);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 14px 0; width: 100%; border-bottom: 1px solid var(--border); }
  .nav-cta .phone { display: none; }
  .menu-toggle { display: flex; }
  .services-grid, .metrics-grid, .steps, .product-grid, .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
}