/* ============================================================
   宇见希行 · 全站统一样式（中文主页面，桌面与手机共用）
   颜色、字号、间距、按钮、卡片、弹窗、目录、页脚只在这里定义。
   页面由 tools/build.mjs 生成，不再在页面内写颜色与组件样式。
   ============================================================ */

:root {
  /* 颜色：深蓝灰背景 + 低饱和青色主色 */
  --c-bg: #0d1624;
  --c-surface: #101c2c;
  --c-card: #142235;
  --c-card-hover: #182a40;
  --c-title: #f1f5f9;
  --c-text: #b8c4d4;
  --c-muted: #97a8bb;
  --c-accent: #58b8d8;
  --c-accent-hover: #74c6e1;
  --c-on-accent: #071018;
  --c-accent-soft: rgba(88, 184, 216, 0.12);
  --c-accent-line: rgba(88, 184, 216, 0.4);
  --c-line: #2b3a4d;
  --c-line-strong: #3d5168;
  --c-warn: #d8a552;
  --c-success: #63b98d;
  --c-wechat: #1aad5b;
  --c-photo-bg: #ffffff;

  /* 形状与间距（4/8 步进） */
  --r-btn: 8px;
  --r-card: 12px;
  --r-modal: 14px;
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --container: 1200px;
  --gutter: 20px;
  --header-h: 64px;
  --bottom-bar-h: 0px;
  --t: 200ms ease;

  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
}

@media (max-width: 640px) {
  :root { --gutter: 16px; --header-h: 56px; }
}

/* ── 基础 ── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 12px); }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  font-variant-numeric: tabular-nums;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}
body.has-bottom-bar { --bottom-bar-h: 64px; padding-bottom: calc(var(--bottom-bar-h) + env(safe-area-inset-bottom)); }
img, video, iframe { max-width: 100%; display: block; }
a { color: var(--c-accent); text-decoration: none; }
a:hover { color: var(--c-accent-hover); }
h1, h2, h3, h4 { color: var(--c-title); line-height: 1.3; margin: 0; font-weight: 700; letter-spacing: 0; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
ul[role="list"], ol.steps { list-style: none; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 3px; border-radius: 4px; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: 12px; top: -48px; z-index: 1000; padding: 8px 14px; background: var(--c-accent); color: var(--c-on-accent); border-radius: var(--r-btn); font-weight: 700; }
.skip-link:focus { top: 12px; color: var(--c-on-accent); }
.container { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }
.nowrap { white-space: nowrap; }

/* ── 按钮 ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 20px;
  border-radius: var(--r-btn); border: 1px solid transparent;
  font-size: 15px; font-weight: 700; line-height: 1.2; text-align: center;
  white-space: nowrap; text-decoration: none;
  transition: background var(--t), border-color var(--t), color var(--t), transform var(--t);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--c-accent); color: var(--c-on-accent); border-color: var(--c-accent); }
.btn-primary:hover { background: var(--c-accent-hover); border-color: var(--c-accent-hover); color: var(--c-on-accent); }
.btn-secondary { background: transparent; color: var(--c-title); border-color: var(--c-line-strong); }
.btn-secondary:hover { border-color: var(--c-accent-line); background: var(--c-accent-soft); color: var(--c-title); }
.btn-wechat { background: rgba(26, 173, 91, 0.14); color: #c9f2da; border-color: rgba(26, 173, 91, 0.5); }
.btn-wechat:hover { background: rgba(26, 173, 91, 0.22); color: #e3f9ec; }
.btn-sm { min-height: 38px; padding: 8px 16px; font-size: 14px; }
.btn-block { width: 100%; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; padding: 0;
  border-radius: var(--r-btn); border: 1px solid var(--c-line); background: var(--c-surface); color: var(--c-text);
  transition: border-color var(--t), color var(--t);
}
.icon-btn:hover { border-color: var(--c-accent-line); color: var(--c-title); }
.link-btn { background: none; border: 0; padding: 0; color: var(--c-accent); font-weight: 700; font-size: inherit; text-decoration: underline; text-underline-offset: 3px; }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; }
.link-arrow i { font-size: 12px; transition: transform var(--t); }
.link-arrow:hover i { transform: translateX(3px); }

/* ── 头部 ── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(16, 28, 44, 0.96);
  border-bottom: 1px solid var(--c-line);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.header-inner { display: flex; align-items: center; gap: var(--s-5); height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--c-title); flex-shrink: 0; }
.brand:hover { color: var(--c-title); }
.brand img { width: 34px; height: 34px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-cn { font-size: 18px; font-weight: 700; letter-spacing: 0.06em; }
.brand-en { font-size: 10px; letter-spacing: 0.16em; color: var(--c-accent); }
.back-link { margin-right: -8px; }
.site-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.site-nav a {
  position: relative; padding: 8px 12px; border-radius: var(--r-btn);
  color: var(--c-muted); font-size: 15px; font-weight: 500; white-space: nowrap;
}
.site-nav a:hover { color: var(--c-title); background: rgba(255, 255, 255, 0.03); }
.site-nav a[aria-current="page"] { color: var(--c-title); }
.site-nav a[aria-current="page"]::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 2px; height: 2px; background: var(--c-accent); border-radius: 2px; }
.header-actions { display: flex; align-items: center; gap: var(--s-3); }
.menu-btn { display: none; }
.header-title { display: none; }
.site-menu { border-top: 1px solid var(--c-line); background: var(--c-surface); }
.site-menu-inner { display: grid; gap: 4px; padding: var(--s-3) var(--gutter) var(--s-4); max-width: calc(var(--container) + var(--gutter) * 2); margin: 0 auto; }
.site-menu a.menu-link {
  display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 10px 14px;
  border-radius: var(--r-btn); color: var(--c-text); font-weight: 600;
}
.site-menu a.menu-link i { width: 18px; text-align: center; color: var(--c-muted); }
.site-menu a.menu-link:hover { background: rgba(255, 255, 255, 0.03); color: var(--c-title); }
.site-menu a.menu-link[aria-current="page"] { background: var(--c-accent-soft); color: var(--c-title); }
.site-menu a.menu-link[aria-current="page"] i { color: var(--c-accent); }
.site-menu-actions { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-2); margin-top: var(--s-2); }

@media (max-width: 1100px) {
  .site-nav { display: none; }
  .menu-btn { display: inline-flex; }
  .header-actions { margin-left: auto; }
}
@media (max-width: 640px) {
  .header-inner { gap: var(--s-3); }
  .brand img { width: 30px; height: 30px; }
  .brand-cn { font-size: 16px; }
  .header-cta { display: none; }
  .header-title { display: block; flex: 1; min-width: 0; text-align: center; color: var(--c-muted); font-size: 14px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .header-title + .header-actions { margin-left: 0; }
}

/* ── 页面介绍 / 面包屑 ── */
.page-intro { padding: var(--s-7) 0 var(--s-6); border-bottom: 1px solid var(--c-line); background: linear-gradient(180deg, var(--c-surface), var(--c-bg)); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: var(--s-3); font-size: 14px; color: var(--c-muted); }
.breadcrumb a { color: var(--c-muted); }
.breadcrumb a:hover { color: var(--c-accent); }
.page-intro h1 { font-size: clamp(28px, 4vw, 40px); margin-bottom: var(--s-3); }
.lead { max-width: 760px; font-size: 17px; color: var(--c-text); }
.fact-row { display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-5); margin: var(--s-5) 0 0; }
.fact-row div { display: flex; align-items: baseline; gap: 8px; }
.fact-row dt { font-size: 14px; color: var(--c-muted); }
.fact-row dd { margin: 0; color: var(--c-title); font-size: 20px; font-weight: 800; }
.notice {
  display: flex; gap: 10px; align-items: flex-start;
  margin-top: var(--s-5); padding: 12px 16px; max-width: 860px;
  border: 1px solid rgba(216, 165, 82, 0.35); border-left: 3px solid var(--c-warn);
  border-radius: var(--r-btn); background: rgba(216, 165, 82, 0.07);
  font-size: 14px; line-height: 1.65; color: var(--c-text);
}
.notice i { color: var(--c-warn); margin-top: 4px; }
.notice.is-info { border-color: var(--c-line-strong); border-left-color: var(--c-accent); background: var(--c-accent-soft); }
.notice.is-info i { color: var(--c-accent); }

/* ── 区块 ── */
.section { padding: var(--s-8) 0; }
.section.alt { background: var(--c-surface); border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.section-head { max-width: 760px; margin-bottom: var(--s-6); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: var(--s-3); color: var(--c-accent); font-size: 13px; font-weight: 700; letter-spacing: 0.12em; }
.section-head h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: var(--s-3); }
.section-head p { color: var(--c-text); }
.section-foot { margin-top: var(--s-5); display: flex; flex-wrap: wrap; gap: var(--s-3); align-items: center; }
.small-note { font-size: 14px; color: var(--c-muted); }
@media (max-width: 640px) {
  .section { padding: var(--s-7) 0; }
  .section-head { margin-bottom: var(--s-5); }
  .page-intro { padding: var(--s-6) 0 var(--s-5); }
}

/* ── 卡片 ── */
.card { background: var(--c-card); border: 1px solid var(--c-line); border-radius: var(--r-card); padding: var(--s-5); }
.card h3 { font-size: 18px; margin-bottom: var(--s-2); }
.card p { font-size: 15px; }
a.card { display: block; color: inherit; transition: border-color var(--t), background var(--t); }
a.card:hover { border-color: var(--c-accent-line); background: var(--c-card-hover); color: inherit; }
.card-icon { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; margin-bottom: var(--s-4); border-radius: var(--r-btn); background: var(--c-accent-soft); color: var(--c-accent); font-size: 18px; }
.grid { display: grid; gap: var(--s-4); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1024px) { .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); } .card { padding: var(--s-4); } }

/* ── 首页 · 首屏 ── */
.hero { position: relative; overflow: hidden; display: flex; align-items: center; min-height: min(760px, calc(100svh - var(--header-h))); padding: var(--s-8) 0; background: #0a121e; }
.hero-media { position: absolute; inset: 0; }
.hero-media video, .hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(13, 22, 36, 0.94) 0%, rgba(13, 22, 36, 0.82) 48%, rgba(13, 22, 36, 0.55) 100%), linear-gradient(180deg, rgba(13, 22, 36, 0.2) 60%, var(--c-bg) 100%); }
.hero .container { position: relative; z-index: 1; }
.hero-content { max-width: 660px; }
.hero h1 { font-size: clamp(32px, 5vw, 54px); line-height: 1.2; margin-bottom: var(--s-4); }
.hero h1 .accent { color: var(--c-accent); display: block; }
.hero-sub { font-size: 18px; color: var(--c-text); margin-bottom: var(--s-5); max-width: 600px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--s-3); margin-bottom: var(--s-5); }
.price-panel { display: flex; gap: var(--s-4); align-items: flex-start; max-width: 560px; padding: var(--s-4); border: 1px solid var(--c-line-strong); border-left: 3px solid var(--c-accent); border-radius: var(--r-btn); background: rgba(16, 28, 44, 0.86); }
.price-value { color: var(--c-title); font-size: 30px; font-weight: 800; line-height: 1; white-space: nowrap; }
.price-value small { margin-left: 6px; color: var(--c-muted); font-size: 14px; font-weight: 500; }
.price-label { color: var(--c-text); font-size: 14px; line-height: 1.6; }
.price-label span { display: block; color: var(--c-muted); font-size: 13px; }
.video-toggle { position: absolute; right: var(--gutter); bottom: var(--s-4); z-index: 2; width: 40px; height: 40px; background: rgba(13, 22, 36, 0.7); }
@media (max-width: 640px) {
  .hero { min-height: 0; padding: var(--s-7) 0 var(--s-6); }
  .hero-shade { background: linear-gradient(180deg, rgba(13, 22, 36, 0.8) 0%, rgba(13, 22, 36, 0.9) 60%, var(--c-bg) 100%); }
  .hero-sub { font-size: 16px; }
  .hero-actions .btn { flex: 1 1 140px; }
  .price-panel { flex-direction: column; gap: var(--s-2); }
  .price-value { font-size: 26px; }
  .video-toggle { top: 12px; bottom: auto; }
}

/* ── 首页 · 产品线 ── */
.line-card { display: flex; flex-direction: column; height: 100%; }
.line-card .line-fit { margin: var(--s-3) 0; font-size: 14px; color: var(--c-muted); }
.line-card .line-stats { margin-top: auto; padding-top: var(--s-3); border-top: 1px solid var(--c-line); font-size: 14px; color: var(--c-title); font-weight: 700; }
.line-card .link-arrow { margin-top: var(--s-3); font-size: 15px; }

/* ── 首页 · 硬件 ── */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--s-7); align-items: center; }
.media-frame { overflow: hidden; border-radius: var(--r-card); border: 1px solid var(--c-line); background: #0a121e; aspect-ratio: 4 / 3; }
.media-frame video, .media-frame img { width: 100%; height: 100%; object-fit: cover; }
.feature-list { display: grid; gap: var(--s-4); margin: var(--s-5) 0; list-style: none; }
.feature-list li { display: grid; grid-template-columns: 40px 1fr; gap: var(--s-3); align-items: start; }
.feature-list .card-icon { width: 40px; height: 40px; margin: 0; font-size: 16px; }
.feature-list h3 { font-size: 16px; margin-bottom: 2px; }
.feature-list p { font-size: 15px; }
@media (max-width: 900px) { .split { grid-template-columns: minmax(0, 1fr); gap: var(--s-5); } .split .media-frame { order: -1; } }

/* ── 首页 · 模块主题 ── */
.topic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: var(--s-3); }
.topic { display: flex; flex-direction: column; gap: 6px; padding: var(--s-4); border-radius: var(--r-card); border: 1px solid var(--c-line); background: var(--c-card); color: inherit; transition: border-color var(--t), background var(--t); }
.topic:hover { border-color: var(--c-accent-line); background: var(--c-card-hover); color: inherit; }
.topic-head { display: flex; align-items: center; gap: 10px; }
.topic-head i { width: 20px; text-align: center; color: var(--c-accent); }
.topic-name { color: var(--c-title); font-weight: 700; font-size: 16px; }
.topic-count { margin-left: auto; color: var(--c-muted); font-size: 14px; white-space: nowrap; }
.topic-samples { color: var(--c-muted); font-size: 14px; line-height: 1.6; }
@media (max-width: 640px) { .topic-grid { grid-template-columns: minmax(0, 1fr); } }

/* ── 首页 · 流程 ── */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s-4); list-style: none; counter-reset: step; }
.steps li { counter-increment: step; }
.steps .card::before { content: "0" counter(step); display: block; margin-bottom: var(--s-3); color: var(--c-accent); font-size: 22px; font-weight: 800; }
@media (max-width: 1024px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .steps { grid-template-columns: minmax(0, 1fr); } }

/* ── 首页 · 合作客户 ── */
.partner-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: var(--s-3); list-style: none; }
.partner { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; min-height: 120px; padding: var(--s-4) var(--s-3); border: 1px solid var(--c-line); border-radius: var(--r-card); background: var(--c-card); text-align: center; }
.partner img { width: 100%; max-width: 120px; height: 36px; object-fit: contain; }
.partner-name { color: var(--c-text); font-size: 14px; line-height: 1.4; }
.partner-tag { color: var(--c-muted); font-size: 12px; }
@media (max-width: 640px) { .partner-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .partner { min-height: 100px; } .partner img { height: 30px; } }

/* ── 常见问题 ── */
.faq { display: grid; gap: var(--s-3); max-width: 900px; }
.faq details { border: 1px solid var(--c-line); border-radius: var(--r-card); background: var(--c-card); }
.faq summary { display: flex; align-items: center; gap: var(--s-3); min-height: 56px; padding: 14px var(--s-5); cursor: pointer; list-style: none; color: var(--c-title); font-weight: 700; font-size: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; margin-left: auto; color: var(--c-accent); font-size: 22px; font-weight: 400; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq .faq-a { padding: 0 var(--s-5) var(--s-5); color: var(--c-text); font-size: 15px; }
@media (max-width: 640px) { .faq summary { padding: 12px var(--s-4); } .faq .faq-a { padding: 0 var(--s-4) var(--s-4); } }

/* ── 关于我们 ── */
.about-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: var(--s-7); align-items: start; }
.about-text p + p, .about-text .role-list + p { margin-top: var(--s-3); }
.role-list { display: grid; gap: var(--s-2); margin-top: var(--s-4); list-style: none; }
.role-list li { padding-left: 18px; position: relative; }
.role-list li::before { content: ""; position: absolute; left: 0; top: 0.75em; width: 8px; height: 2px; background: var(--c-accent); }
.contact-list { display: grid; gap: var(--s-3); list-style: none; font-size: 15px; }
.contact-list li { display: grid; grid-template-columns: 20px 1fr; gap: var(--s-3); align-items: start; }
.contact-list i { color: var(--c-accent); margin-top: 5px; }
.contact-list a { color: var(--c-text); }
.contact-list a:hover { color: var(--c-accent); }
@media (max-width: 900px) { .about-grid { grid-template-columns: minmax(0, 1fr); gap: var(--s-5); } }

/* ── 行动区 ── */
.cta-band { padding: var(--s-7) 0; }
.cta-box { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--s-4); padding: var(--s-6); border: 1px solid var(--c-line-strong); border-radius: var(--r-card); background: var(--c-card); }
.cta-box h2 { font-size: 22px; margin-bottom: 6px; }
.cta-box p { color: var(--c-text); max-width: 640px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: var(--s-3); }
@media (max-width: 640px) { .cta-box { padding: var(--s-5) var(--s-4); } .cta-actions { width: 100%; } .cta-actions .btn { flex: 1 1 140px; } }

/* ── 目录（VR 一体机 / PC VR / 体感设备共用） ── */
.catalog { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: var(--s-6); align-items: start; padding-top: var(--s-6); padding-bottom: var(--s-6); }
.catalog-aside { position: sticky; top: calc(var(--header-h) + var(--s-4)); max-height: calc(100vh - var(--header-h) - var(--s-6)); overflow-y: auto; }
.filter-label { margin-bottom: var(--s-2); color: var(--c-muted); font-size: 13px; font-weight: 700; letter-spacing: 0.08em; }
.filter-bar { display: grid; gap: 4px; }
.chip {
  display: flex; align-items: center; gap: 10px; width: 100%; min-height: 44px; padding: 8px 12px;
  border: 1px solid transparent; border-radius: var(--r-btn); background: transparent;
  color: var(--c-text); font-size: 15px; text-align: left; transition: background var(--t), border-color var(--t), color var(--t);
}
.chip i { width: 18px; text-align: center; color: var(--c-muted); flex-shrink: 0; }
.chip-label { flex: 1; min-width: 0; }
.chip-count { flex-shrink: 0; min-width: 32px; padding: 1px 8px; border-radius: 999px; background: rgba(255, 255, 255, 0.05); color: var(--c-muted); font-size: 13px; text-align: center; }
.chip:hover { background: rgba(255, 255, 255, 0.03); color: var(--c-title); }
.chip[aria-pressed="true"] { background: var(--c-accent-soft); border-color: var(--c-accent-line); color: var(--c-title); font-weight: 700; }
.chip[aria-pressed="true"] i { color: var(--c-accent); }
.chip[aria-pressed="true"] .chip-count { background: var(--c-accent); color: var(--c-on-accent); }
.catalog-main { min-width: 0; }
.catalog-controls { position: sticky; top: var(--header-h); z-index: 5; padding: var(--s-3) 0; background: var(--c-bg); }
.search-field { position: relative; display: block; }
.search-field > i { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--c-muted); font-size: 15px; pointer-events: none; }
.search-field input {
  width: 100%; min-height: 48px; padding: 10px 48px 10px 42px;
  border: 1px solid var(--c-line-strong); border-radius: var(--r-btn); background: var(--c-surface);
  color: var(--c-title); font-size: 16px; outline: none; -webkit-appearance: none; appearance: none;
}
.search-field input::placeholder { color: var(--c-muted); }
.search-field input:focus { border-color: var(--c-accent); box-shadow: 0 0 0 3px rgba(88, 184, 216, 0.18); }
.search-field input::-webkit-search-cancel-button { display: none; }
.search-clear { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); width: 40px; height: 40px; border: 0; background: none; color: var(--c-muted); font-size: 16px; border-radius: var(--r-btn); }
.search-clear:hover { color: var(--c-title); }
.catalog-status { display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: center; margin-top: var(--s-3); font-size: 14px; color: var(--c-muted); }
.catalog-status strong { color: var(--c-title); }
.cat-group { margin-top: var(--s-6); }
.cat-group:first-child { margin-top: var(--s-4); }
.cat-group-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; padding-bottom: var(--s-3); margin-bottom: var(--s-4); border-bottom: 1px solid var(--c-line); }
.cat-group-head h2 { font-size: 20px; }
.cat-group-head .group-count { color: var(--c-muted); font-size: 14px; }
.cat-group-head .group-note { flex-basis: 100%; color: var(--c-text); font-size: 15px; }
.tag { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 6px; border: 1px solid var(--c-line-strong); color: var(--c-muted); font-size: 12px; font-weight: 600; line-height: 1.6; white-space: nowrap; }
.tag.is-accent { border-color: var(--c-accent-line); color: var(--c-accent); }
.tag.is-warn { border-color: rgba(216, 165, 82, 0.5); color: var(--c-warn); }
.item-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--s-3); list-style: none; }
.item-card { height: 100%; padding: var(--s-4); border: 1px solid var(--c-line); border-radius: var(--r-card); background: var(--c-card); }
.item-meta { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; color: var(--c-muted); font-size: 13px; }
.item-no { font-weight: 700; letter-spacing: 0.04em; }
.item-card h3 { font-size: 17px; margin-bottom: 6px; }
.item-card p { font-size: 15px; color: var(--c-text); line-height: 1.65; }
mark { background: rgba(88, 184, 216, 0.25); color: var(--c-title); border-radius: 2px; padding: 0 1px; }
.row-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 0 var(--s-5); list-style: none; }
.row-item { display: flex; align-items: baseline; gap: var(--s-3); padding: 10px 0; border-bottom: 1px solid rgba(43, 58, 77, 0.6); }
.row-item .item-no { color: var(--c-muted); font-size: 13px; min-width: 32px; }
.row-item .row-title { color: var(--c-title); font-size: 16px; }
.row-item .tag { margin-left: auto; }
.catalog-empty { margin-top: var(--s-5); padding: var(--s-6) var(--s-5); border: 1px dashed var(--c-line-strong); border-radius: var(--r-card); text-align: center; }
.catalog-empty h2 { font-size: 18px; margin-bottom: var(--s-2); }
.catalog-empty p { color: var(--c-muted); font-size: 15px; }
.empty-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--s-2); margin-top: var(--s-4); }
.noscript-note { margin-top: var(--s-3); font-size: 14px; color: var(--c-muted); }

@media (max-width: 1024px) {
  .catalog { grid-template-columns: minmax(0, 1fr); gap: 0; padding-top: 0; }
  .catalog-aside { position: static; max-height: none; overflow: visible; margin: 0 calc(var(--gutter) * -1); padding: var(--s-3) var(--gutter) 0; }
  .filter-label { display: none; }
  .filter-bar { display: flex; gap: 8px; overflow-x: auto; padding-bottom: var(--s-2); scrollbar-width: none; -webkit-overflow-scrolling: touch; }
  .filter-bar::-webkit-scrollbar { display: none; }
  .chip { width: auto; flex-shrink: 0; min-height: 40px; padding: 6px 12px; border-color: var(--c-line); background: var(--c-surface); font-size: 14px; white-space: nowrap; }
  .chip i { display: none; }
  .chip-count { min-width: 0; padding: 0 7px; }
  .catalog-controls { top: var(--header-h); }
}
@media (max-width: 640px) {
  .item-grid, .row-list { grid-template-columns: minmax(0, 1fr); }
  .cat-group { margin-top: var(--s-5); }
}

/* ── 体感设备卡片 ── */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--s-4); list-style: none; }
.product-card { display: flex; flex-direction: column; height: 100%; overflow: hidden; border: 1px solid var(--c-line); border-radius: var(--r-card); background: var(--c-card); }
.product-figure { position: relative; display: block; width: 100%; padding: 0; border: 0; border-bottom: 1px solid var(--c-line); background: var(--c-photo-bg); aspect-ratio: 1 / 1; cursor: zoom-in; }
.product-figure img { width: 100%; height: 100%; object-fit: contain; padding: 6%; }
.product-figure .fig-count { position: absolute; right: 10px; bottom: 10px; padding: 2px 8px; border-radius: 6px; background: rgba(13, 22, 36, 0.78); color: #fff; font-size: 12px; font-weight: 700; }
.product-figure.no-image { display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 8px; background: var(--c-surface); color: var(--c-muted); cursor: default; font-size: 14px; }
.product-body { display: flex; flex-direction: column; gap: var(--s-3); flex: 1; padding: var(--s-4); }
.product-body h3 { font-size: 17px; }
.spec-list { display: grid; gap: 4px; margin: 0; font-size: 14px; }
.spec-list div { display: grid; grid-template-columns: 44px 1fr; gap: 8px; }
.spec-list dt { color: var(--c-muted); }
.spec-list dd { margin: 0; color: var(--c-title); }
.point-list { display: grid; gap: 4px; list-style: none; font-size: 14px; color: var(--c-text); }
.point-list li { position: relative; padding-left: 14px; }
.point-list li::before { content: ""; position: absolute; left: 0; top: 0.72em; width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent); }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
.product-actions { margin-top: auto; padding-top: var(--s-2); }
@media (max-width: 640px) { .product-grid { grid-template-columns: minmax(0, 1fr); } .product-figure { aspect-ratio: 4 / 3; } }

/* ── 体验馆 ── */
.case-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-4); list-style: none; }
.case-figure { position: relative; margin: calc(var(--s-5) * -1) calc(var(--s-5) * -1) 0; aspect-ratio: 16 / 9; overflow: hidden; border-radius: var(--r-card) var(--r-card) 0 0; background: var(--c-surface); }
.case-figure img { width: 100%; height: 100%; object-fit: cover; }
.case-figure figcaption { position: absolute; left: 10px; bottom: 10px; padding: 2px 8px; border-radius: 6px; background: rgba(13, 22, 36, 0.8); color: #fff; font-size: 12px; }
.case-meta { display: flex; align-items: center; gap: 6px; color: var(--c-muted); font-size: 14px; }
.case-meta i { color: var(--c-accent); }
.case-facts { display: grid; gap: var(--s-2); margin: 0; font-size: 15px; }
.case-facts dt { color: var(--c-title); font-weight: 700; font-size: 14px; }
.case-facts dd { margin: 2px 0 0; color: var(--c-text); }
@media (max-width: 900px) { .case-grid { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 640px) { .case-figure { margin: calc(var(--s-4) * -1) calc(var(--s-4) * -1) 0; } }
.case-card { display: flex; flex-direction: column; gap: var(--s-3); height: 100%; }
.case-card .case-source { font-size: 13px; color: var(--c-muted); }
.case-card .btn { margin-top: auto; align-self: flex-start; }
.check-list { display: grid; gap: 6px; list-style: none; font-size: 15px; }
.check-list li { position: relative; padding-left: 22px; }
.check-list li::before { content: "\f00c"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; left: 0; top: 1px; color: var(--c-accent); font-size: 13px; }
.ordered { display: grid; gap: 6px; padding-left: 20px; font-size: 15px; }

/* ── 弹窗（联系、全景、图库共用） ── */
.modal { position: fixed; inset: 0; z-index: 900; display: flex; align-items: center; justify-content: center; padding: var(--s-4); }
.modal-backdrop { position: absolute; inset: 0; background: rgba(4, 9, 16, 0.78); }
.modal-card {
  position: relative; width: min(400px, 100%); max-height: calc(100vh - 32px); overflow-y: auto;
  padding: var(--s-6) var(--s-5) var(--s-5); text-align: center;
  border: 1px solid var(--c-line-strong); border-radius: var(--r-modal); background: var(--c-surface);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}
.modal-card:focus { outline: none; }
.modal-close { position: absolute; top: 10px; right: 10px; width: 40px; height: 40px; }
.modal-card h2 { font-size: 21px; margin: 0 28px var(--s-2); }
.modal-desc { color: var(--c-text); font-size: 15px; line-height: 1.65; }
.modal-context { margin-top: var(--s-3); padding: 8px 12px; border-radius: var(--r-btn); background: var(--c-accent-soft); color: var(--c-title); font-size: 14px; font-weight: 600; }
.modal-qr { display: inline-block; margin: var(--s-4) auto var(--s-3); padding: 10px; border-radius: var(--r-card); background: #fff; line-height: 0; }
.modal-qr img { width: 180px; height: 180px; object-fit: contain; }
.qr-hint { margin-bottom: var(--s-3); color: var(--c-muted); font-size: 13px; }
.modal-phone { display: flex; flex-direction: column; margin-top: var(--s-3); padding: 12px; border: 1px solid var(--c-line); border-radius: var(--r-btn); background: var(--c-bg); color: var(--c-muted); font-size: 13px; }
.modal-phone strong { color: var(--c-accent); font-size: 24px; letter-spacing: 0.03em; }
.modal-phone:hover { border-color: var(--c-accent-line); color: var(--c-muted); }
.modal-foot { margin-top: var(--s-3); color: var(--c-muted); font-size: 13px; }
.modal-foot a { color: var(--c-text); }
body.modal-open { overflow: hidden; }

.panorama-card { width: min(1100px, 100%); height: min(760px, calc(100vh - 32px)); padding: 0; text-align: left; display: flex; flex-direction: column; overflow: hidden; }
.panorama-head { display: flex; align-items: center; gap: var(--s-3); padding: 10px 12px 10px var(--s-5); border-bottom: 1px solid var(--c-line); }
.panorama-head h2 { margin: 0; font-size: 17px; flex: 1; min-width: 0; }
.panorama-head .modal-close { position: static; }
.panorama-note { padding: 8px var(--s-5); font-size: 13px; color: var(--c-muted); border-bottom: 1px solid var(--c-line); }
.panorama-frame { position: relative; flex: 1; background: #05090f; }
.panorama-frame iframe { width: 100%; height: 100%; border: 0; }
.panorama-frame .frame-status { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--c-muted); font-size: 14px; pointer-events: none; }

.lightbox { position: fixed; inset: 0; z-index: 950; display: flex; flex-direction: column; background: rgba(4, 9, 16, 0.96); }
.lightbox-top { display: flex; align-items: center; gap: var(--s-3); padding: 10px var(--gutter); }
.lightbox-caption { flex: 1; min-width: 0; color: var(--c-title); font-size: 15px; font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lightbox-caption span { margin-left: 8px; color: var(--c-muted); font-weight: 500; }
.lightbox-tools { display: flex; gap: 6px; }
.lightbox-tools .icon-btn { width: 40px; height: 40px; font-weight: 700; }
.lightbox-stage { position: relative; flex: 1; overflow: hidden; display: flex; align-items: center; justify-content: center; touch-action: none; }
.lightbox-stage img { max-width: min(92vw, 1100px); max-height: calc(100vh - 140px); width: auto; height: auto; object-fit: contain; background: #fff; border-radius: 6px; transform-origin: center; user-select: none; -webkit-user-drag: none; }
.lightbox-stage.is-zoomed { cursor: grab; }
.lightbox-nav { position: absolute; top: 50%; transform: translateY(-50%); width: 48px; height: 48px; font-size: 20px; background: rgba(16, 28, 44, 0.85); }
.lightbox-nav.prev { left: var(--gutter); }
.lightbox-nav.next { right: var(--gutter); }
.lightbox-status { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--c-muted); pointer-events: none; }
@media (max-width: 640px) { .lightbox-nav { top: auto; bottom: 16px; transform: none; } .lightbox-tools [data-lb-zoom], .lightbox-tools [data-lb-reset] { display: none; } }

/* ── 页脚 ── */
.site-footer { margin-top: var(--s-6); border-top: 1px solid var(--c-line); background: var(--c-surface); font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr); gap: var(--s-6); padding-top: var(--s-7); padding-bottom: var(--s-6); }
.footer-brand p { margin: var(--s-3) 0 var(--s-4); max-width: 420px; color: var(--c-text); }
.site-footer h2 { margin-bottom: var(--s-3); color: var(--c-title); font-size: 15px; }
.footer-links { display: grid; gap: 8px; list-style: none; }
.footer-links a, .footer-links button { color: var(--c-text); background: none; border: 0; padding: 0; font-size: 14px; text-align: left; }
.footer-links a:hover, .footer-links button:hover { color: var(--c-accent); }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 6px 20px; align-items: center; padding-top: var(--s-4); padding-bottom: var(--s-5); border-top: 1px solid var(--c-line); color: var(--c-muted); font-size: 13px; }
.footer-bottom a { color: var(--c-muted); display: inline-flex; align-items: center; gap: 4px; }
.footer-bottom a:hover { color: var(--c-accent); }
.footer-bottom img { width: 14px; height: 14px; }
@media (max-width: 900px) { .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); } .footer-brand { grid-column: 1 / -1; } }
@media (max-width: 640px) { .site-footer { margin-top: var(--s-5); } .footer-grid { gap: var(--s-5); padding-top: var(--s-6); } }

/* ── 手机底栏 ── */
.bottom-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-2);
  padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom));
  background: rgba(16, 28, 44, 0.98); border-top: 1px solid var(--c-line);
}
.bottom-bar .btn { min-height: 44px; }

/* ── 回到顶部 ── */
.back-to-top { position: fixed; right: 20px; bottom: calc(20px + var(--bottom-bar-h)); z-index: 80; opacity: 0; pointer-events: none; transition: opacity var(--t); }
.back-to-top.is-visible { opacity: 1; pointer-events: auto; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* ── 补充 ── */
.section-title { font-size: clamp(24px, 3vw, 34px); margin-bottom: var(--s-3); }
.back-link { display: none; }
@media (max-width: 640px) { .back-link { display: inline-flex; width: 40px; height: 40px; } }
@media (max-width: 640px) { .page-intro .section-foot .btn, .cta-actions .btn { white-space: normal; text-align: left; } }

/* ── 资料下载留资表单 ── */
.lead-card { width: min(440px, 100%); text-align: left; }
.lead-card h2 { margin-left: 0; }
.lead-form { display: grid; gap: var(--s-3); margin-top: var(--s-4); }
.field { display: grid; gap: 4px; font-size: 14px; color: var(--c-title); font-weight: 600; }
.field em { color: var(--c-warn); font-style: normal; margin-left: 2px; }
.field input, .field select {
  width: 100%; min-height: 44px; padding: 8px 12px; border: 1px solid var(--c-line-strong); border-radius: var(--r-btn);
  background: var(--c-bg); color: var(--c-title); font-size: 16px; font-weight: 400; outline: none; -webkit-appearance: none; appearance: none;
}
.field select { background-image: linear-gradient(45deg, transparent 50%, var(--c-muted) 50%), linear-gradient(135deg, var(--c-muted) 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 32px; }
.field input:focus, .field select:focus { border-color: var(--c-accent); box-shadow: 0 0 0 3px rgba(88, 184, 216, 0.18); }
.field [aria-invalid="true"] { border-color: #e07a6c; }
.field small, .lead-form > small { min-height: 0; color: #f0a197; font-size: 13px; font-weight: 400; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-3); }
.consent { display: grid; grid-template-columns: 20px 1fr; gap: 8px; align-items: start; font-size: 13px; line-height: 1.6; color: var(--c-muted); }
.consent input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--c-accent); }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-error { padding: 8px 12px; border-radius: var(--r-btn); background: rgba(224, 122, 108, 0.12); color: #f0a197; font-size: 14px; }
[data-lead-step="done"] .btn { margin-top: var(--s-4); white-space: normal; }
@media (max-width: 400px) { .field-row { grid-template-columns: 1fr; } }

/* ── 语言切换 ── */
.lang-switch {
  display: inline-flex; align-items: center; justify-content: center; min-width: 44px; min-height: 38px; padding: 0 10px;
  border: 1px solid var(--c-line-strong); border-radius: var(--r-btn); color: var(--c-text); font-size: 14px; font-weight: 700; letter-spacing: 0.04em;
}
.lang-switch:hover { border-color: var(--c-accent-line); color: var(--c-title); }
@media (max-width: 640px) { .lang-switch { min-height: 40px; min-width: 40px; padding: 0 8px; font-size: 13px; } }