:root {
  --ink: #1d2129;
  --ink-2: #4e5969;
  --ink-3: #86909c;
  --bg: #f6f7f9;
  --card: #ffffff;
  --accent: #2b5aed;
  --accent-soft: #e8effe;
  --warn-bg: #fff7e6;
  --warn-border: #ffd591;
  --warn-text: #ad6800;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(29, 33, 41, .06);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ── 顶部演示声明横幅 ── */
.demo-banner {
  position: sticky; top: 0; z-index: 100;
  background: var(--warn-bg);
  border-bottom: 1px solid var(--warn-border);
  color: var(--warn-text);
  font-size: 13px;
  padding: 8px 16px;
  text-align: center;
}

/* ── 头部 ── */
.site-header {
  background: var(--card);
  border-bottom: 1px solid #eceef1;
  position: sticky; top: 0; z-index: 90;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; }
.brand-logo {
  display: inline-flex; width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  color: #fff; align-items: center; justify-content: center; font-size: 16px;
}
.brand-name em { font-style: normal; font-weight: 500; font-size: 12px; color: var(--ink-3); margin-left: 4px; }
.site-nav a { color: var(--ink-2); text-decoration: none; margin-left: 22px; font-size: 14px; }
.site-nav a:hover { color: var(--accent); }

/* ── Hero ── */
.hero {
  background: linear-gradient(160deg, #eef3ff 0%, #f6f7f9 70%);
  padding: 72px 0 56px;
  text-align: center;
}
.hero h1 { font-size: 34px; letter-spacing: 1px; }
.hero-sub { color: var(--ink-2); margin: 14px auto 26px; max-width: 560px; }
.hero-cta {
  display: inline-block; background: var(--accent); color: #fff;
  padding: 10px 28px; border-radius: 999px; text-decoration: none; font-size: 15px;
}
.hero-cta:hover { opacity: .9; }

/* ── 区块标题 ── */
.section-title { font-size: 22px; margin: 40px 0 18px; display: flex; align-items: center; gap: 10px; }
.badge-sample {
  font-size: 12px; font-weight: 500; color: var(--warn-text);
  background: var(--warn-bg); border: 1px solid var(--warn-border);
  border-radius: 999px; padding: 2px 10px;
}

/* ── 筛选栏 ── */
.filter-bar {
  background: var(--card); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px 20px; margin-bottom: 22px;
}
.filter-row { display: flex; align-items: flex-start; gap: 12px; padding: 7px 0; flex-wrap: wrap; }
.filter-label { flex: 0 0 64px; color: var(--ink-3); font-size: 13px; padding-top: 6px; }
.search-input {
  width: 100%; max-width: 420px; padding: 9px 14px;
  border: 1px solid #dcdfe5; border-radius: 10px; font-size: 14px; outline: none;
}
.search-input:focus { border-color: var(--accent); }
.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid #dcdfe5; background: #fff; color: var(--ink-2);
  border-radius: 999px; padding: 5px 14px; font-size: 13px; cursor: pointer;
  transition: all .15s; user-select: none;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.filter-meta { justify-content: space-between; align-items: center; border-top: 1px dashed #eceef1; margin-top: 6px; }
.reset-btn {
  background: none; border: none; color: var(--accent); font-size: 13px; cursor: pointer; padding: 4px 0;
}
.result-count { color: var(--ink-3); font-size: 13px; }

/* ── 商品卡 ── */
.product-grid {
  display: grid; gap: 18px;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.product-card {
  background: var(--card); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .15s, box-shadow .15s;
}
.product-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(29, 33, 41, .1); }
.card-visual { position: relative; aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center; }
.card-visual svg { width: 44%; height: auto; filter: drop-shadow(0 6px 12px rgba(0, 0, 0, .18)); }
.demo-corner {
  position: absolute; top: 10px; left: 10px;
  font-size: 11px; color: var(--warn-text);
  background: var(--warn-bg); border: 1px solid var(--warn-border);
  border-radius: 6px; padding: 1px 7px;
}
.card-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-name { font-size: 15px; font-weight: 600; line-height: 1.4; }
.card-tagline { font-size: 13px; color: var(--ink-2); flex: 1; }
.card-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: 11px; border-radius: 6px; padding: 1px 8px;
  background: var(--accent-soft); color: var(--accent);
}
.tag.model { background: #f2f3f5; color: var(--ink-2); }
.card-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 4px; }
.price-demo { font-size: 13px; color: var(--ink-3); }
.sku { font-size: 11px; color: var(--ink-3); }

.empty-hint { text-align: center; color: var(--ink-3); padding: 40px 0; }

/* ── 分页 ── */
.pager { display: flex; justify-content: center; align-items: center; gap: 14px; margin: 26px 0 8px; }
.pager button {
  border: 1px solid #dcdfe5; background: #fff; border-radius: 8px;
  padding: 6px 16px; font-size: 13px; cursor: pointer; color: var(--ink-2);
}
.pager button:disabled { opacity: .4; cursor: default; }
.pager button:not(:disabled):hover { border-color: var(--accent); color: var(--accent); }
.pager span { font-size: 13px; color: var(--ink-3); }

/* ── 标签类型卡 ── */
.category-cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
.category-card {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 18px 16px; cursor: pointer; transition: transform .15s;
  border: 1px solid transparent;
}
.category-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.category-card h3 { font-size: 16px; margin-bottom: 6px; }
.category-card p { font-size: 13px; color: var(--ink-2); }

/* ── 关于 ── */
.about-grid { display: grid; gap: 24px; grid-template-columns: 1fr 1fr; padding-bottom: 20px; }
.about-grid p { color: var(--ink-2); font-size: 14px; }

/* ── 页脚 ── */
.site-footer { background: #171a21; color: #a9b0bc; margin-top: 40px; padding: 28px 0 22px; }
.footer-disclaimer { font-size: 12px; line-height: 1.8; max-width: 860px; }
.footer-brand { font-size: 12px; color: #6b7280; margin-top: 14px; }

@media (max-width: 720px) {
  .about-grid { grid-template-columns: 1fr; }
  .site-nav { display: none; }
  .hero h1 { font-size: 26px; }
  .site-header { top: 0; }
}

/* ── 语言切换 ── */
.lang-btn {
  border: 1px solid #dcdfe5; background: #fff; border-radius: 999px;
  padding: 4px 14px; font-size: 13px; cursor: pointer; color: var(--ink-2);
}
.lang-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ── 联系方式 ── */
.contact-section { padding-bottom: 30px; }
.contact-sub { color: var(--ink-2); font-size: 14px; margin-bottom: 16px; }
.contact-channels { display: flex; gap: 14px; flex-wrap: wrap; }
.contact-card {
  display: flex; align-items: center; gap: 12px;
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 14px 20px; text-decoration: none; color: var(--ink);
  border: 1px solid transparent; transition: border-color .15s, transform .15s;
  min-width: 200px;
}
.contact-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.contact-card svg { width: 26px; height: 26px; flex: 0 0 26px; }
.contact-card .c-name { font-size: 14px; font-weight: 600; }
.contact-card .c-val { font-size: 12px; color: var(--ink-3); word-break: break-all; }

/* ── 页脚声明（弱化样式，次要位置） ── */
.footer-disclaimer a { color: #6b7280; font-size: 12px; text-decoration: underline; text-underline-offset: 3px; }
.footer-disclaimer a:hover { color: #a9b0bc; }

/* ── 弹窗 ── */
.modal { position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(15, 18, 25, .55); }
.modal-box {
  position: relative; background: #fff; border-radius: 16px;
  max-width: 720px; width: calc(100vw - 40px); max-height: 86vh; overflow: auto;
  padding: 26px 28px; box-shadow: 0 20px 60px rgba(0, 0, 0, .25);
}
.modal-small { max-width: 520px; }
.modal-close {
  position: absolute; top: 12px; right: 14px;
  border: none; background: #f2f3f5; border-radius: 50%;
  width: 32px; height: 32px; font-size: 18px; cursor: pointer; color: var(--ink-2);
}
.modal-close:hover { background: #e5e6eb; }
.disclaimer-text { font-size: 13px; color: var(--ink-2); line-height: 1.9; margin-top: 10px; }

/* ── 细节弹窗 ── */
.detail-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 18px; }
.detail-view {
  aspect-ratio: 1; border-radius: 12px; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.detail-view svg, .detail-view img { width: 100%; height: 100%; object-fit: cover; }
.detail-view svg { width: 60%; }
.detail-name { font-size: 19px; font-weight: 700; margin-bottom: 6px; }
.detail-tagline { color: var(--ink-2); font-size: 14px; margin-bottom: 14px; }
.detail-row { display: flex; gap: 10px; align-items: baseline; padding: 6px 0; flex-wrap: wrap; }
.detail-label { flex: 0 0 64px; font-size: 12px; color: var(--ink-3); }
.detail-row .tag { font-size: 12px; }
.detail-sku { margin-top: 14px; font-size: 12px; color: var(--ink-3); }
@media (max-width: 560px) { .detail-gallery { grid-template-columns: 1fr 1fr; } }

/* ── 品牌分组机型行 ── */
.brand-row { display: flex; align-items: flex-start; gap: 10px; width: 100%; }
.brand-label { flex: 0 0 auto; font-size: 12px; color: var(--ink-3); padding-top: 7px; min-width: 96px; }
#modelChips { display: flex; flex-direction: column; gap: 6px; flex: 1; }

/* ── 服务卡 ── */
.services-sub { color: var(--ink-2); font-size: 14px; margin-bottom: 16px; }
.service-cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.service-card {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px 18px; border-top: 3px solid var(--accent);
}
.service-card h3 { font-size: 16px; margin-bottom: 8px; }
.service-card p { font-size: 13px; color: var(--ink-2); }

/* ── 联系 + 表单 ── */
.contact-grid { display: grid; gap: 24px; grid-template-columns: 1fr 1.2fr; align-items: start; }
.contact-grid .contact-channels { flex-direction: column; display: flex; }
.inquiry-form {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px; display: flex; flex-direction: column; gap: 12px;
}
.inquiry-form input, .inquiry-form textarea {
  border: 1px solid #dcdfe5; border-radius: 10px; padding: 10px 14px;
  font-size: 14px; font-family: inherit; outline: none; resize: vertical;
}
.inquiry-form input:focus, .inquiry-form textarea:focus { border-color: var(--accent); }
#fWebsite { position: absolute; left: -9999px; height: 0; opacity: 0; }
.form-submit {
  background: var(--accent); color: #fff; border: none; border-radius: 10px;
  padding: 11px; font-size: 15px; cursor: pointer;
}
.form-submit:disabled { opacity: .6; cursor: default; }
.form-submit:hover:not(:disabled) { opacity: .92; }
.form-msg { font-size: 13px; min-height: 18px; }
.form-msg.ok { color: #1a7f37; }
.form-msg.err { color: #cf222e; }
@media (max-width: 720px) { .contact-grid { grid-template-columns: 1fr; } .brand-label { min-width: 72px; } }

/* ── 手机端适配 ── */
.lang-btn { max-width: 132px; appearance: none; -webkit-appearance: none; }
select.lang-btn { padding-right: 22px; background: #fff url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%234e5969' fill='none' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 9px center; }
[dir="rtl"] select.lang-btn { padding-right: 14px; padding-left: 22px; background-position: left 9px center; }

@media (max-width: 640px) {
  .container { padding: 0 12px; }
  .header-inner { height: 54px; }
  .brand-name { font-size: 16px; }
  .brand-name em { display: none; }
  .lang-btn { max-width: 104px; font-size: 12px; padding: 4px 10px; }
  select.lang-btn { padding-right: 20px; }
  .hero { padding: 46px 0 34px; }
  .hero h1 { font-size: 23px; }
  .hero-sub { font-size: 14px; margin: 12px auto 20px; }
  .section-title { font-size: 18px; margin: 30px 0 14px; }
  .filter-bar { padding: 12px 14px; border-radius: 12px; }
  .filter-label { flex: 0 0 100%; padding-top: 0; }
  .filter-row { gap: 8px; padding: 5px 0; }
  .brand-row { flex-direction: column; gap: 4px; }
  .brand-label { min-width: 0; padding-top: 2px; font-weight: 600; }
  .search-input { max-width: 100%; }
  .chip { padding: 5px 12px; font-size: 12px; }
  .product-grid { grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); gap: 12px; }
  .card-body { padding: 10px 12px 12px; gap: 6px; }
  .card-name { font-size: 14px; }
  .card-tagline { font-size: 12px; }
  .category-cards { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .service-cards { grid-template-columns: 1fr; }
  .modal-box { width: calc(100vw - 24px); padding: 18px 16px; max-height: 88vh; }
  .detail-gallery { gap: 8px; }
  .contact-card { min-width: 0; width: 100%; }
  .inquiry-form { padding: 16px 14px; }
  .site-footer { padding: 22px 0 18px; }
}