/* ─────────────────────────────────────────────────────────────
   LINDATECH · 全局样式 (V2 · Procurement / Catalogue aesthetic)
   Warm ivory surface + ink navy + rust-amber accent
   Serif display (Source Serif 4) · Mono spec (IBM Plex Mono) · Inter sans
   ───────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,wght@0,400;0,500;1,400&family=IBM+Plex+Mono:wght@400;500&family=Inter:wght@400;500;600&display=swap');

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

:root {
  --ink:       #0e1520;
  --graphite:  #1a2230;
  --surface:   #f6f4ef;
  --surface-2: #ecebe4;
  --surface-3: #e1ddd1;
  --paper:     #ffffff;
  --rule:      #d9d5c8;
  --rule-2:    #c6c1b2;
  --rule-dk:   rgba(14,21,32,.12);
  --text:      #1a2230;
  --text-2:    #3d4a5c;
  --text-3:    #6b7584;
  --text-4:    #9aa2ad;
  --amber:     #b8691b;
  --amber-2:   #d48341;
  --amber-bg:  rgba(184,105,27,.08);
  --amber-bd:  rgba(184,105,27,.28);
  --green:     #3f6b4a;

  --ff-sans:   'Inter', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
  --ff-serif:  'Source Serif 4', 'Times New Roman', serif;
  --ff-mono:   'IBM Plex Mono', ui-monospace, monospace;
}

html { scroll-behavior: smooth; }
body {
  background: var(--surface);
  color: var(--text);
  font-family: var(--ff-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }

/* ── 顶部资质栏 ── */
.utility-bar {
  background: var(--ink); color: #d9cfc0;
  padding: 0 40px; height: 34px;
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--ff-mono); font-size: 11.5px; letter-spacing: 1px;
}
.utility-bar .sep { color: rgba(255,255,255,.35); margin: 0 12px; }
.utility-bar .certs { display: flex; gap: 14px; align-items: center; }
.utility-bar .cert-label { color: rgba(255,255,255,.55); }
.utility-bar .cert-hl { color: var(--amber-2); }

/* ── 导航 ── */
.nav {
  background: var(--paper); border-bottom: 1px solid var(--rule);
  display: flex; align-items: stretch; justify-content: space-between;
  position: sticky; top: 0; z-index: 50;
}
.nav-logo { display: flex; align-items: center; gap: 14px; padding: 0 40px; }
.nav-logo-mark {
  width: 40px; height: 40px; background: var(--ink); color: #f3ece0;
  display: grid; place-items: center;
  font-family: var(--ff-serif); font-size: 18px; font-weight: 400;
}
.nav-logo-text { font-family: var(--ff-serif); font-size: 18px; color: var(--ink); letter-spacing: .5px; }
.nav-logo-cn { font-family: var(--ff-mono); font-size: 9.5px; color: var(--text-3); letter-spacing: 1.2px; text-transform: uppercase; margin-top: 2px; }

.nav-links { display: flex; align-items: stretch; }
.nav-link {
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 22px;
  border-bottom: 2px solid transparent;
  color: var(--text-2); transition: color .15s, border-color .15s;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); border-bottom-color: var(--amber); }
.nav-link .en { font-size: 13.5px; font-weight: 500; }
.nav-link .zh { font-family: var(--ff-mono); font-size: 10px; color: var(--text-3); letter-spacing: 1px; margin-top: 2px; }

.nav-right { display: flex; align-items: center; gap: 14px; padding: 0 32px 0 20px; border-left: 1px solid var(--rule); }
.lang-switch { display: flex; gap: 8px; font-family: var(--ff-mono); font-size: 11px; letter-spacing: 1.2px; }
.lang-switch a { color: var(--text-3); }
.lang-switch a.active { color: var(--ink); font-weight: 500; }
.lang-switch .sep { color: var(--rule-2); }
.nav-cta {
  background: var(--amber); color: #fff;
  padding: 10px 18px; font-size: 12px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 8px;
  transition: background .15s;
}
.nav-cta:hover { background: var(--ink); }

/* ── 章节通用 ── */
.section { padding: 80px 56px; position: relative; }
.section.paper { background: var(--paper); }
.section.surface2 { background: var(--surface-2); }
.section.ink { background: var(--ink); color: #f3ece0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--ff-mono); font-size: 11px; letter-spacing: 1.8px;
  text-transform: uppercase; color: var(--amber); font-weight: 500;
  margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 20px; height: 1px; background: var(--amber); }
.eyebrow .num { color: var(--text-4); font-weight: 400; margin-right: 2px; }

.display {
  font-family: var(--ff-serif); font-weight: 400;
  letter-spacing: -.015em; line-height: 1.05; color: var(--ink);
  font-size: clamp(36px, 6vw, 84px);
}
.display em { font-style: italic; color: var(--amber); }

.h2 {
  font-family: var(--ff-serif); font-weight: 400;
  letter-spacing: -.012em; line-height: 1.1; color: var(--ink);
  font-size: clamp(28px, 3.6vw, 48px);
}
.h2 em { font-style: italic; color: var(--amber); }

.sublabel {
  font-family: var(--ff-mono); font-size: 11.5px;
  letter-spacing: 1.4px; text-transform: uppercase; color: var(--text-3);
}

.lede { font-family: var(--ff-serif); font-size: 17px; line-height: 1.75; color: var(--text-2); }

/* ── 按钮 ── */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 13px; font-weight: 500; letter-spacing: .02em;
  padding: 14px 22px; border: 1px solid transparent;
  transition: all .18s;
}
.btn-primary { background: var(--ink); color: #f3ece0; }
.btn-primary:hover { background: var(--amber); }
.btn-ghost { border-color: var(--rule-2); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); background: var(--ink); color: #f3ece0; }
.btn-amber { background: var(--amber); color: #fff; }
.btn-amber:hover { background: var(--ink); }

/* ── 数据/规格表 ── */
.spec-row {
  display: grid; grid-template-columns: 180px 1fr auto; gap: 20px;
  padding: 14px 0; border-top: 1px solid var(--rule);
  align-items: baseline; font-size: 13.5px;
}
.spec-row .key { font-family: var(--ff-mono); font-size: 11px; color: var(--text-3); letter-spacing: 1.2px; text-transform: uppercase; }
.spec-row .val { color: var(--ink); font-weight: 500; }

/* ── Hero ── */
.hero { padding: 64px 56px 72px; background: var(--paper); border-bottom: 1px solid var(--rule); }
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 80px; align-items: start; }
.hero h1 { margin-bottom: 14px; }
.hero-sub { margin-bottom: 22px; font-size: 12.5px; }
.hero p.lede { margin-bottom: 30px; max-width: 520px; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 44px; }
.hero-stats { display: grid; grid-template-columns: repeat(4,1fr); border: 1px solid var(--rule-2); }
.hero-stat { padding: 20px 22px; border-right: 1px solid var(--rule-2); }
.hero-stat:last-child { border-right: none; }
.hero-stat .num { font-family: var(--ff-serif); font-size: 34px; color: var(--ink); letter-spacing: -.02em; line-height: 1; }
.hero-stat .en { font-size: 12px; color: var(--text-2); margin-top: 8px; }
.hero-stat .zh { font-family: var(--ff-mono); font-size: 9.5px; color: var(--text-3); letter-spacing: 1px; margin-top: 3px; }

/* ── 特色产品卡 ── */
.featured-card {
  background: var(--paper); border: 1px solid var(--rule); padding: 32px;
}
.featured-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--rule); }
.featured-pn { font-family: var(--ff-mono); font-size: 11px; color: var(--text-3); letter-spacing: 1.2px; }
.featured-pn .v { color: var(--ink); }
.featured-photo { aspect-ratio: 4/3; background: var(--surface-2); display: grid; place-items: center; margin-bottom: 22px; }
.featured-title { font-family: var(--ff-serif); font-size: 26px; color: var(--ink); margin-bottom: 4px; }
.featured-sub { font-family: var(--ff-mono); font-size: 10.5px; color: var(--text-3); letter-spacing: 1.2px; margin-bottom: 16px; }
.featured-certs { display: flex; gap: 6px; margin-bottom: 18px; flex-wrap: wrap; }

/* 规格徽章 */
.cert {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border: 1px solid var(--rule-2);
  font-family: var(--ff-mono); font-size: 10.5px; letter-spacing: 1.3px;
  color: var(--text-2); text-transform: uppercase; background: var(--paper);
}
.cert.active { border-color: var(--green); color: var(--green); }

/* 工程制图开关图标 */
.switch-ico {
  width: 64px; height: 64px;
  border: 1.8px solid var(--ink); background: var(--paper);
  display: grid; place-items: center; position: relative;
}
.switch-ico.sq { border-radius: 6px; }
.switch-ico.round { border-radius: 50%; }
.switch-ico.oval { width: 88px; height: 50px; border-radius: 25px; display: flex; gap: 12px; align-items: center; justify-content: center; }
.switch-ico::before { content: ""; width: 20px; height: 20px; border-radius: 50%; border: 1.8px solid var(--ink); background: radial-gradient(circle at 50% 40%, var(--amber-bg), transparent 60%); }
.switch-ico.oval::before, .switch-ico.oval::after { display: none; }
.switch-ico.oval > span { display: block; width: 12px; height: 12px; border-radius: 50%; border: 1.8px solid var(--ink); }
.switch-ico::after { content: ""; position: absolute; top: 12px; left: 50%; transform: translateX(-50%); width: 1.8px; height: 10px; background: var(--ink); }
.switch-ico.oval::after { display: none; }

/* ── 产品网格 (首页 4 类 / 列表页多 SKU) ── */
.category-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--rule); background: var(--rule); gap: 1px; }
.category-tile { background: var(--paper); padding: 28px; display: flex; flex-direction: column; min-height: 260px; transition: background .18s; }
.category-tile:hover { background: var(--surface-2); }
.category-tile .ico-wrap { aspect-ratio: 4/3; background: var(--surface-2); display: grid; place-items: center; margin-bottom: 18px; border: 1px solid var(--rule); }
.category-tile .prefix { font-family: var(--ff-mono); font-size: 10.5px; color: var(--text-3); letter-spacing: 1.2px; margin-bottom: 8px; }
.category-tile .en { font-family: var(--ff-serif); font-size: 20px; color: var(--ink); }
.category-tile .zh { font-family: var(--ff-mono); font-size: 10px; color: var(--text-3); letter-spacing: 1px; margin-top: 3px; }
.category-tile .count { margin-top: auto; padding-top: 18px; font-family: var(--ff-mono); font-size: 11px; color: var(--amber); letter-spacing: 1.2px; }

/* 列表页 */
.products-toolbar {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 14px; border-bottom: 1px solid var(--rule); margin-bottom: 20px;
  font-family: var(--ff-mono); font-size: 11px; color: var(--text-3); letter-spacing: 1.2px;
}
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.prod-card { background: var(--paper); display: flex; flex-direction: column; position: relative; transition: background .18s; }
.prod-card:hover { background: var(--surface-2); }
.prod-card .photo { aspect-ratio: 5/4; background: var(--surface-2); display: grid; place-items: center; position: relative; border-bottom: 1px solid var(--rule); }
.prod-card .photo .idx { position: absolute; top: 12px; right: 12px; font-family: var(--ff-mono); font-size: 10px; color: var(--text-3); letter-spacing: 1px; }
.prod-card .badge { position: absolute; top: 12px; left: 12px; padding: 3px 8px; font-family: var(--ff-mono); font-size: 9.5px; letter-spacing: 1.3px; color: var(--amber); background: var(--paper); border: 1px solid var(--amber); }
.prod-card .body { padding: 20px; }
.prod-card .pn { font-family: var(--ff-mono); font-size: 10.5px; color: var(--text-3); letter-spacing: 1.3px; margin-bottom: 8px; }
.prod-card .pn b { color: var(--ink); font-weight: 500; }
.prod-card .name-en { font-family: var(--ff-serif); font-size: 18px; color: var(--ink); letter-spacing: -.01em; }
.prod-card .name-zh { font-family: var(--ff-mono); font-size: 10px; color: var(--text-3); letter-spacing: 1px; margin-top: 3px; }
.prod-card .specs { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--rule); display: grid; grid-template-columns: 1fr 1fr; gap: 8px; font-size: 11.5px; }
.prod-card .specs .k { font-family: var(--ff-mono); font-size: 9.5px; color: var(--text-3); letter-spacing: 1px; margin-right: 4px; }
.prod-card .foot { margin-top: 14px; display: flex; justify-content: space-between; align-items: center; font-size: 12px; }
.prod-card .foot .moq { font-family: var(--ff-mono); font-size: 10.5px; color: var(--text-3); letter-spacing: 1px; }
.prod-card .foot .cta { color: var(--amber); }

/* 筛选侧栏 */
.filter-side .group { margin-bottom: 24px; }
.filter-side .group-t { font-family: var(--ff-mono); font-size: 10.5px; letter-spacing: 1.3px; color: var(--text-3); margin-bottom: 10px; }
.filter-side .opt { display: flex; align-items: center; gap: 10px; padding: 6px 0; font-size: 13px; color: var(--text-2); cursor: pointer; }
.filter-side .opt .box { width: 12px; height: 12px; border: 1px solid var(--rule-2); flex-shrink: 0; }
.filter-side .opt.active .box { background: var(--ink); border-color: var(--ink); }

/* ── 4 step 品质流程 ── */
.quality-steps { border-top: 1px solid var(--rule); }
.quality-step { display: grid; grid-template-columns: 60px 240px 1fr auto; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--rule); align-items: center; }
.quality-step .idx { font-family: var(--ff-mono); font-size: 13px; color: var(--amber); letter-spacing: 1.2px; }
.quality-step .zh { font-family: var(--ff-serif); font-size: 20px; color: var(--ink); }
.quality-step .en { font-size: 13px; color: var(--text-2); line-height: 1.6; }
.quality-step .tag { font-family: var(--ff-mono); font-size: 10px; color: var(--text-3); letter-spacing: 1.2px; }

/* ── RFQ 块 ── */
.rfq-block { background: var(--ink); color: #f3ece0; padding: 56px; margin: 0 56px 80px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: center; }
.rfq-block h3 { font-family: var(--ff-serif); font-size: 44px; font-weight: 400; line-height: 1.15; }
.rfq-block h3 em { color: var(--amber-2); font-style: italic; }
.rfq-block p { font-size: 14px; color: rgba(255,255,255,.65); margin-top: 14px; line-height: 1.85; }
.rfq-block .cta-side { display: flex; flex-direction: column; gap: 12px; }

/* ── 联系页 / RFQ 表单 ── */
.rfq-form {
  background: var(--paper); border: 1px solid var(--rule); padding: 36px 40px;
}
.rfq-form-head { display: flex; justify-content: space-between; align-items: baseline; padding-bottom: 18px; border-bottom: 2px solid var(--ink); margin-bottom: 26px; }
.rfq-form-head .t { font-family: var(--ff-serif); font-size: 26px; color: var(--ink); }
.rfq-form-head .t-sub { font-family: var(--ff-mono); font-size: 10.5px; color: var(--text-3); letter-spacing: 1.4px; margin-top: 4px; }
.rfq-form-head .rev { font-family: var(--ff-mono); font-size: 10.5px; color: var(--text-3); letter-spacing: 1px; text-align: right; }
.rfq-form-head .rev b { color: var(--ink); font-weight: 500; }

.rfq-section { margin-bottom: 28px; }
.rfq-section-t { font-family: var(--ff-mono); font-size: 11px; color: var(--amber); letter-spacing: 1.4px; margin-bottom: 14px; }
.field { display: block; }
.field label { display: block; font-family: var(--ff-mono); font-size: 11px; letter-spacing: 1.2px; text-transform: uppercase; color: var(--text-3); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 14px; background: var(--paper);
  border: 1px solid var(--rule-2); color: var(--ink); font-size: 14px;
  font-family: inherit; outline: none; transition: border-color .18s;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--ink); }
.field textarea { min-height: 120px; resize: vertical; }
.field-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* BOM 表 */
.bom-table { border: 1px solid var(--rule-2); }
.bom-table .head, .bom-table .row { display: grid; grid-template-columns: 60px 1.5fr 2fr 100px 100px; }
.bom-table .head { background: var(--surface-2); font-family: var(--ff-mono); font-size: 10px; letter-spacing: 1.3px; color: var(--text-3); border-bottom: 1px solid var(--rule-2); }
.bom-table .head > div { padding: 10px 12px; }
.bom-table .row { border-bottom: 1px solid var(--rule); align-items: stretch; }
.bom-table .row:last-child { border-bottom: none; }
.bom-table .row .lineno { padding: 12px; font-family: var(--ff-mono); font-size: 12px; color: var(--text-3); border-right: 1px solid var(--rule); display: grid; place-items: center; }
.bom-table .row input { border: none; border-right: 1px solid var(--rule); padding: 0 12px; background: transparent; font-size: 13px; font-family: var(--ff-mono); }
.bom-table .row input:last-child { border-right: none; }

/* 联系信息栏 */
.contact-side-item { padding: 14px 0; border-top: 1px solid var(--rule); }
.contact-side-item:first-child { border-top: none; padding-top: 0; }
.contact-side-item .k { font-family: var(--ff-mono); font-size: 10px; color: var(--text-3); letter-spacing: 1.4px; margin-bottom: 6px; }
.contact-side-item .v { font-family: var(--ff-serif); font-size: 20px; color: var(--ink); margin-bottom: 3px; }
.contact-side-item .sub { font-size: 12px; color: var(--text-3); }

.sla-card { background: var(--ink); color: #f3ece0; padding: 22px; margin-top: 24px; }
.sla-card .t { font-family: var(--ff-mono); font-size: 10px; color: var(--amber-2); letter-spacing: 1.4px; margin-bottom: 10px; }
.sla-card p { font-size: 13px; line-height: 1.85; color: rgba(255,255,255,.78); }
.sla-card b { color: #fff; font-weight: 500; }

/* ── 页脚 ── */
.footer { background: var(--ink); color: #cdc4b5; padding: 64px 40px 28px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr; gap: 44px; margin-bottom: 44px; }
.footer-brand-name { font-family: var(--ff-serif); font-size: 26px; color: #f3ece0; letter-spacing: .5px; margin-bottom: 6px; }
.footer-brand-en { font-family: var(--ff-mono); font-size: 10.5px; letter-spacing: 1.5px; color: rgba(255,255,255,.4); text-transform: uppercase; margin-bottom: 18px; }
.footer-desc { font-size: 13px; color: rgba(255,255,255,.55); line-height: 1.9; max-width: 280px; margin-bottom: 20px; }
.footer-certs { display: flex; gap: 6px; flex-wrap: wrap; }
.footer-certs span { font-family: var(--ff-mono); font-size: 10px; padding: 4px 9px; border: 1px solid rgba(255,255,255,.2); color: rgba(255,255,255,.72); letter-spacing: 1.1px; }
.footer-col-title { font-family: var(--ff-mono); font-size: 10.5px; color: rgba(255,255,255,.45); letter-spacing: 1.8px; text-transform: uppercase; padding-bottom: 14px; margin-bottom: 14px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-link { display: block; font-size: 13px; color: rgba(255,255,255,.62); padding: 6px 0; transition: color .15s; }
.footer-link:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); font-family: var(--ff-mono); font-size: 11px; color: rgba(255,255,255,.35); letter-spacing: 1px; }

/* ── 入场动画（轻量） ── */
[data-reveal] { opacity: 0; transform: translateY(16px); transition: opacity .6s, transform .6s; }
[data-reveal].in { opacity: 1; transform: translateY(0); }

/* ── 移动端 ── */
@media (max-width: 1024px) {
  .utility-bar { display: none; }
  .nav { padding: 0; height: 56px; }
  .nav-logo { padding: 0 16px; gap: 10px; }
  .nav-logo-mark { width: 34px; height: 34px; font-size: 15px; }
  .nav-logo-text { font-size: 15px; }
  .nav-logo-cn { display: none; }
  .nav-links { display: none; }
  .nav-right { padding: 0 12px; border-left: none; gap: 8px; }
  .lang-switch { font-size: 10.5px; }
  .nav-cta { padding: 10px 14px; font-size: 11.5px; }

  .section { padding: 40px 20px; }
  .hero { padding: 28px 20px 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero-stat { border-right: 1px solid var(--rule-2); }
  .hero-stat:nth-child(2) { border-right: none; }
  .hero-stat:nth-child(-n+2) { border-bottom: 1px solid var(--rule-2); }

  .category-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr 1fr; }

  .quality-step { grid-template-columns: 40px 1fr; gap: 12px; padding: 16px 0; }
  .quality-step .en, .quality-step .tag { grid-column: 2; }

  .rfq-block { grid-template-columns: 1fr; padding: 32px 22px; margin: 0 20px 40px; }
  .rfq-block h3 { font-size: 28px; }

  .rfq-form { padding: 22px 18px; }
  .field-grid-2, .field-grid-3 { grid-template-columns: 1fr; gap: 12px; }
  .bom-table .head, .bom-table .row { grid-template-columns: 40px 1fr 1fr; }
  .bom-table .head > div:nth-child(3),
  .bom-table .row > *:nth-child(3) { display: none; }

  .footer { padding: 36px 20px 100px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 8px; font-size: 10px; }

  /* 移动端底部 sticky 询价栏 */
  .mobile-rfq-bar {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 40;
    background: var(--paper); border-top: 1px solid var(--rule-2);
    padding: 10px 16px 14px; display: grid; grid-template-columns: 44px 1fr 1.2fr; gap: 8px;
  }
  .mobile-rfq-bar a { height: 48px; display: flex; align-items: center; justify-content: center; gap: 6px; font-size: 12.5px; }
  .mobile-rfq-bar .ico { border: 1px solid var(--rule-2); color: var(--ink); }
  .mobile-rfq-bar .mail { border: 1px solid var(--rule-2); color: var(--ink); }
  .mobile-rfq-bar .rfq { background: var(--amber); color: #fff; font-weight: 500; }
}
@media (min-width: 1025px) { .mobile-rfq-bar { display: none; } }

/* =====================================================
   Admin 后台 — 基础布局与组件
   ===================================================== */

/* 登录页 */
.admin-login {
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  background:#0a0a0a;
}
.login-box {
  background:#111; border:1px solid rgba(255,255,255,.1); border-radius:12px;
  padding:48px 40px; width:100%; max-width:420px;
}
.login-box h2 { color:#fff; font-size:22px; font-weight:700; letter-spacing:.06em; margin:0 0 6px; }
.login-box > p { color:rgba(255,255,255,.4); font-size:13px; margin:0 0 28px; }
.login-form { display:flex; flex-direction:column; gap:16px; }

/* 通用表单元素 */
.form-group { display:flex; flex-direction:column; }
.form-label { font-size:12px; color:rgba(255,255,255,.45); font-weight:500; }
.admin-input {
  background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.12);
  border-radius:6px; color:rgba(255,255,255,.85); font-size:14px;
  padding:10px 14px; outline:none; transition:border-color .2s;
  width:100%; box-sizing:border-box; font-family:inherit;
}
.admin-input:focus { border-color:var(--accent,#00e5ff); }
.admin-input option { background:#1a1a1a; }
textarea.admin-input { resize:vertical; }
.form-submit {
  background:var(--accent,#00e5ff); color:#000; border:none; border-radius:6px;
  font-size:15px; font-weight:600; padding:12px 24px; cursor:pointer;
  transition:opacity .2s; min-height:44px; width:100%;
}
.form-submit:hover { opacity:.85; }

/* 双栏布局 */
.admin-layout {
  display:grid; grid-template-columns:220px 1fr; min-height:100vh; background:#0d0d0d;
}
/* 侧边栏 */
.admin-aside {
  background:#111; border-right:1px solid rgba(255,255,255,.07);
  display:flex; flex-direction:column;
  position:sticky; top:0; height:100vh; overflow-y:auto;
}
.aside-brand { padding:24px 18px 18px; border-bottom:1px solid rgba(255,255,255,.06); }
.aside-brand-name { font-size:17px; font-weight:700; color:#fff; letter-spacing:.08em; }
.aside-brand-sub { font-size:11px; color:rgba(255,255,255,.3); margin-top:3px; }
.aside-nav { padding:10px 8px; display:flex; flex-direction:column; gap:2px; flex:1; }
.aside-item {
  display:block; padding:10px 12px; border-radius:6px;
  font-size:13.5px; color:rgba(255,255,255,.5);
  text-decoration:none; transition:background .15s,color .15s;
}
.aside-item:hover { background:rgba(255,255,255,.06); color:rgba(255,255,255,.85); }
.aside-item.active { background:rgba(0,229,255,.1); color:var(--accent,#00e5ff); }

/* 主内容区 */
.admin-main { display:flex; flex-direction:column; overflow:auto; }
.admin-header {
  padding:16px 24px; border-bottom:1px solid rgba(255,255,255,.07);
  display:flex; align-items:center; justify-content:space-between;
  background:#111; position:sticky; top:0; z-index:10;
}
.admin-page-title { font-size:17px; font-weight:600; color:#fff; }
.admin-content { padding:24px; flex:1; }
.admin-card {
  background:#111; border:1px solid rgba(255,255,255,.07);
  border-radius:8px; overflow:hidden; padding:0;
}
.admin-card-title {
  padding:16px 20px; border-bottom:1px solid rgba(255,255,255,.06);
  font-size:14px; font-weight:600; color:rgba(255,255,255,.7);
}

/* 统计卡片组 */
.stat-cards { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-bottom:24px; }
.stat-card {
  background:#111; border:1px solid rgba(255,255,255,.07); border-radius:8px; padding:20px 24px;
}
.stat-card-num { font-size:32px; font-weight:700; color:#fff; line-height:1; }
.stat-card-label { font-size:12px; color:rgba(255,255,255,.35); margin-top:6px; }

/* 数据表格 */
.admin-table { width:100%; border-collapse:collapse; font-size:13.5px; color:rgba(255,255,255,.75); }
.admin-table thead th {
  text-align:left; padding:11px 16px;
  font-size:11px; font-weight:600; color:rgba(255,255,255,.3);
  text-transform:uppercase; letter-spacing:.06em;
  border-bottom:1px solid rgba(255,255,255,.07); background:rgba(255,255,255,.02);
}
.admin-table tbody tr { border-bottom:1px solid rgba(255,255,255,.04); transition:background .12s; }
.admin-table tbody tr:last-child { border-bottom:none; }
.admin-table tbody tr:hover { background:rgba(255,255,255,.03); }
.admin-table td { padding:11px 16px; vertical-align:middle; }

/* 状态徽章 */
.badge { display:inline-block; padding:3px 8px; border-radius:4px; font-size:11.5px; font-weight:500; }
.badge-done { background:rgba(0,200,100,.12); color:rgba(0,220,120,.9); border:1px solid rgba(0,200,100,.25); }
.badge-new  { background:rgba(255,160,0,.12);  color:rgba(255,180,0,.9);  border:1px solid rgba(255,160,0,.25); }

/* 小按钮 */
.btn-sm {
  display:inline-flex; align-items:center; padding:6px 14px; border-radius:5px;
  font-size:12.5px; font-weight:500; cursor:pointer; border:1px solid transparent;
  text-decoration:none; transition:background .15s,color .15s; white-space:nowrap;
  font-family:inherit; background:none;
}
.btn-sm-ghost { border-color:rgba(255,255,255,.15); color:rgba(255,255,255,.55); }
.btn-sm-ghost:hover { background:rgba(255,255,255,.06); color:rgba(255,255,255,.9); }
.btn-sm-primary { background:rgba(0,229,255,.12); border-color:rgba(0,229,255,.3); color:var(--accent,#00e5ff); }
.btn-sm-primary:hover { background:rgba(0,229,255,.22); }
.btn-sm-danger { background:rgba(255,80,80,.1); border-color:rgba(255,80,80,.22); color:rgba(255,100,100,.9); }
.btn-sm-danger:hover { background:rgba(255,80,80,.2); }

/* =====================================================
   Admin UX override — 父亲友好操作体验
   ===================================================== */

/* 主操作按钮（大号，品牌青蓝色） */
.btn-admin-primary {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 24px; font-size: 15px; font-weight: 500;
  background: var(--accent, #00e5ff); color: #000;
  border: none; border-radius: 6px; cursor: pointer;
  transition: opacity .2s;
}
.btn-admin-primary:hover { opacity: .85; }
.btn-admin-primary:active { opacity: .7; }

/* 顶部欢迎信息 */
.admin-header-user {
  font-size: 13px; color: rgba(255,255,255,.5);
  display: flex; align-items: center; gap: 4px;
}
.admin-header-user strong { color: rgba(255,255,255,.85); }
.admin-header-user a { text-decoration: none; }

/* 空状态卡片 */
.admin-empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 64px 24px; text-align: center;
}
.admin-empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; }
.admin-empty-state .empty-title {
  font-size: 18px; font-weight: 500; color: rgba(255,255,255,.6); margin-bottom: 8px;
}
.admin-empty-state .empty-desc {
  font-size: 13px; color: rgba(255,255,255,.3); max-width: 320px; line-height: 1.6;
}

/* 分页组件 */
.admin-pagination {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0 4px; border-top: 1px solid rgba(255,255,255,.06); margin-top: 16px;
}
.admin-pagination .page-info { font-size: 12px; color: rgba(255,255,255,.3); }
.admin-pagination .page-btns { display: flex; gap: 6px; }
.page-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 36px; height: 32px; padding: 0 8px;
  font-size: 13px; color: rgba(255,255,255,.5);
  background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.08);
  border-radius: 4px; text-decoration: none; cursor: pointer;
  transition: background .15s, color .15s;
}
.page-btn:hover { background: rgba(255,255,255,.08); color: rgba(255,255,255,.85); }
.page-btn.active {
  background: var(--accent, #00e5ff); color: #000;
  border-color: var(--accent, #00e5ff); font-weight: 600;
}
.page-btn.disabled {
  opacity: .3; pointer-events: none;
}

/* Quill 编辑器 admin 风格适配 */
.ql-toolbar.ql-snow {
  background: rgba(255,255,255,.04);
  border-color: rgba(255,255,255,.1) !important;
  border-radius: 6px 6px 0 0;
}
.ql-container.ql-snow {
  background: rgba(255,255,255,.02);
  border-color: rgba(255,255,255,.1) !important;
  border-radius: 0 0 6px 6px;
  color: rgba(255,255,255,.85);
  min-height: 200px;
}
.ql-editor.ql-blank::before { color: rgba(255,255,255,.25); }
.ql-snow .ql-stroke { stroke: rgba(255,255,255,.5); }
.ql-snow .ql-fill { fill: rgba(255,255,255,.5); }
.ql-snow .ql-picker { color: rgba(255,255,255,.5); }
.ql-snow .ql-picker-options { background: #1a1a1a; border-color: rgba(255,255,255,.1); }
.ql-snow .ql-active .ql-stroke { stroke: var(--accent, #00e5ff); }
.ql-snow .ql-active .ql-fill { fill: var(--accent, #00e5ff); }
.ql-snow .ql-active { color: var(--accent, #00e5ff); }

/* ============================================================
 * 首页 Swiper 全屏（仅 body.homepage 启用）
 * 滚动行为完全由 Swiper.js 接管，CSS 只负责尺寸与缓动
 * ============================================================ */
/* body 严格 100vh，flex 让 swiper 自动撑满 utility-bar 与 nav 之外的剩余空间，
   避免 body 整体高度 > 100vh 引发的浏览器垂直滚动条 */
body.homepage {
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
body.homepage .homepage-swiper {
  width: 100%;
  flex: 1;          /* 占据 utility-bar + nav 之外的全部高度 */
  min-height: 0;
}
body.homepage .homepage-swiper .swiper-slide {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  /* 隐藏 scrollbar UI 但保留滚动能力，避免滚动条占用 ~17px 视口宽度让内容贴边 */
  scrollbar-width: none;          /* Firefox */
  -ms-overflow-style: none;       /* IE / Edge legacy */
}
body.homepage .homepage-swiper .swiper-slide::-webkit-scrollbar {
  display: none;                  /* Chrome / Safari / 现代 Edge */
}
body.homepage .homepage-swiper .swiper-slide > section,
body.homepage .homepage-swiper .swiper-slide > .hero {
  flex: 1;
  min-height: 0;
}
/* ============================================================
 * 末屏布局：rfq-block 用默认样式（深色卡片 + 56px 左右 + 80px 底 margin），
 * footer 用默认样式（深色独立块）。仅靠 swiper-slide 的 flex column +
 * space-between 让 rfq 顶 / footer 底，中间露出 paper 浅色作为视觉间隙。
 * 设计语言对齐英文版（用户裁定为审美标杆）。
 * ============================================================ */
body.homepage .homepage-swiper .last-slide {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* ============================================================
 * Hero 屏适配 swiper 视口高度：压缩 padding 与内部间距
 * 让 hero-grid（左侧文字 + hero-stats / 右侧 featured-card）
 * 整屏可见，不再被 100vh 视口裁切
 * ============================================================ */
body.homepage .homepage-swiper .hero {
  padding: 36px 56px 32px;
  border-bottom: none;
}
body.homepage .homepage-swiper .hero .display {
  margin-bottom: 8px;
}
body.homepage .homepage-swiper .hero .lede {
  margin-top: 16px !important;
  margin-bottom: 22px;
}
body.homepage .homepage-swiper .hero-btns {
  margin-bottom: 24px !important;
}
body.homepage .homepage-swiper .hero-stat {
  padding: 12px 18px;
}
body.homepage .homepage-swiper .hero-stat .num {
  font-size: 26px;
}
body.homepage .homepage-swiper .featured-head {
  margin-bottom: 14px;
  padding-bottom: 10px;
}
body.homepage .homepage-swiper .featured-photo {
  aspect-ratio: 16/10;
  margin-bottom: 14px;
}
body.homepage .homepage-swiper .featured-title {
  font-size: 22px;
  margin-bottom: 6px;
}
body.homepage .homepage-swiper .featured-certs {
  margin-bottom: 12px;
}
body.homepage .homepage-swiper .featured-card .spec-row {
  padding: 6px 0;
}
/* expo-out 缓动：第一帧位移大，尾部缓出 */
body.homepage .homepage-swiper .swiper-wrapper {
  transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1) !important;
}
/* 分页指示器：右侧竖排，激活态用主色 */
body.homepage .homepage-swiper .swiper-pagination-vertical.swiper-pagination-bullets {
  right: 18px;
  left: auto;
}
body.homepage .homepage-swiper .swiper-pagination-bullet {
  background: rgba(0, 0, 0, 0.25);
  opacity: 1;
  transition: background 0.2s, transform 0.2s;
}
body.homepage .homepage-swiper .swiper-pagination-bullet-active {
  background: var(--amber);
  transform: scale(1.3);
}
@media (max-width: 720px) {
  /* 移动端关掉 swiper 高度限制，回归普通滚动 */
  body.homepage .homepage-swiper { height: auto; }
  body.homepage .homepage-swiper .swiper-slide { height: auto; overflow: visible; }
  body.homepage .homepage-swiper .swiper-pagination { display: none; }
}