/* ============================================================
   冀安丝网 GEAN FENCE — 浅色 · 网格美学（Grid Weave Aesthetic）
   ============================================================ */
:root {
  --bg: #F7F6F2;
  --card: #FFFFFF;
  --ink: #1A1D21;
  --muted: #5B6470;
  --blue: #1E5EFF;
  --blue-soft: rgba(30, 94, 255, .08);
  --orange: #FF6B2C;
  --line: #E5E2DA;
  --green: #1E9E6A;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,.04);
  --mono: "SF Mono", "Roboto Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --font: "PingFang SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.75; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--mono); }

/* ---------- 网格美学母题 ---------- */
.weave { /* 菱形网格 + 节点圆点 */
  background-image:
    radial-gradient(circle, rgba(30,94,255,.35) 1.5px, transparent 1.5px),
    repeating-linear-gradient(45deg, rgba(30,94,255,.08) 0 1px, transparent 1px 22px),
    repeating-linear-gradient(-45deg, rgba(30,94,255,.08) 0 1px, transparent 1px 22px);
  background-size: 22px 22px, auto, auto;
  background-position: 0 0;
}
.weave-light {
  background-image:
    repeating-linear-gradient(45deg, rgba(26,29,33,.05) 0 1px, transparent 1px 20px),
    repeating-linear-gradient(-45deg, rgba(26,29,33,.05) 0 1px, transparent 1px 20px);
}
.stitch { /* 虚线+节点分隔线 */
  border: none; height: 14px; margin: 0;
  background-image:
    radial-gradient(circle, var(--blue) 2px, transparent 2.5px),
    repeating-linear-gradient(90deg, var(--line) 0 8px, transparent 8px 16px);
  background-size: 14px 14px, 100% 1px;
  background-position: center, center;
  background-repeat: no-repeat;
}
.thumb-grid { /* 产品图占位：浅色网格构图 */
  background:
    radial-gradient(circle, rgba(30,94,255,.5) 2px, transparent 2.5px),
    repeating-linear-gradient(45deg, rgba(30,94,255,.12) 0 1.5px, transparent 1.5px 18px),
    repeating-linear-gradient(-45deg, rgba(30,94,255,.12) 0 1.5px, transparent 1.5px 18px),
    linear-gradient(160deg, #FDFCFA, #EFF2F8);
  background-size: 18px 18px, auto, auto, auto;
  border: 1px solid var(--line); border-radius: var(--radius);
}

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.94); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-img { height: 56px; width: auto; display: block; }
@media (max-width: 768px) { .logo-img { height: 44px; } }

.main-nav > ul { display: flex; gap: 2px; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a {
  display: block; padding: 26px 12px; font-size: 15px; color: var(--muted); white-space: nowrap;
  border-bottom: 2px solid transparent; transition: color .2s;
}
.main-nav > ul > li > a:hover, .main-nav > ul > li.active > a { color: var(--ink); border-bottom-color: var(--blue); }

.mega {
  position: absolute; left: 50%; transform: translateX(-50%) translateY(6px); top: 100%;
  width: 1080px; max-width: 95vw; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(26,29,33,.10); padding: 26px 30px;
  columns: 4; column-gap: 32px;
  max-height: 70vh; overflow-y: auto;
  opacity: 0; visibility: hidden; transition: all .18s ease;
}
.mega-col { break-inside: avoid; margin-bottom: 20px; }
.mega li.mega-more a { color: var(--blue); font-weight: 600; font-size: 12px; font-family: var(--mono); }
.mega li.mega-more a:hover { color: var(--orange); }

/* ---------- 普通二级下拉（服务/领域/关于） ---------- */
.drop {
  position: absolute; left: 50%; transform: translateX(-50%) translateY(6px); top: 100%;
  min-width: 200px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 16px 40px rgba(26,29,33,.10); padding: 10px 0;
  opacity: 0; visibility: hidden; transition: all .18s ease;
  display: flex; flex-direction: column;
}
.drop.drop-2col { display: grid; grid-template-columns: 1fr 1fr; min-width: 400px; padding: 12px 0; }
li.has-drop:hover .drop, li.has-drop:focus-within .drop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.drop a {
  display: block; padding: 9px 20px; font-size: 13.5px; color: var(--muted); white-space: nowrap;
  border-left: 2px solid transparent; transition: .15s;
}
.drop a:hover { color: var(--blue); background: rgba(30,94,255,.05); border-left-color: var(--blue); }
.drop a.drop-more { color: var(--blue); font-weight: 600; font-size: 12px; font-family: var(--mono); border-top: 1px dashed var(--line); margin-top: 4px; padding-top: 10px; }
.drop.drop-2col a.drop-more { grid-column: 1 / -1; }
.drop a.drop-more:hover { color: var(--orange); border-left-color: transparent; }
li.has-mega:hover .mega, li.has-mega:focus-within .mega { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.mega h4 { font-size: 14px; margin-bottom: 6px; }
.mega h4 a:hover { color: var(--blue); }
.mega h4::before { content: "◆"; color: var(--blue); font-size: 8px; margin-right: 6px; vertical-align: 2px; }
.mega li a { display: block; font-size: 13px; color: var(--muted); padding: 2px 0; }
.mega li a:hover { color: var(--blue); }

.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 10px; width: 42px; height: 42px; cursor: pointer; position: relative; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 11px; right: 11px; height: 2px; background: var(--ink); transition: .25s; }
.nav-toggle span { top: 50%; margin-top: -1px; }
.nav-toggle span::before { top: -7px; } .nav-toggle span::after { top: 7px; }
body.nav-open .nav-toggle span { background: transparent; }
body.nav-open .nav-toggle span::before { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span::after { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero / Swiper ---------- */
.hero { position: relative; overflow: hidden; background: linear-gradient(180deg, #FDFCF9, var(--bg)); border-bottom: 1px solid var(--line); }
.hero .swiper { width: 100%; }
.hero-slide { position: relative; min-height: 520px; display: flex; align-items: center; }
.hero-slide .container { position: relative; z-index: 2; width: 100%; }
.hero-tag { color: var(--blue); font-size: 12px; letter-spacing: 5px; font-family: var(--mono); margin-bottom: 18px; }
.hero h1 { font-size: 58px; line-height: 1.18; font-weight: 900; max-width: 720px; letter-spacing: -1px; }
.hero h1 em { font-style: normal; color: var(--blue); }
.hero p.sub { color: var(--muted); font-size: 18px; max-width: 540px; margin: 22px 0 38px; }
.hero-art { /* 右下角大号半透明网格装饰 */
  position: absolute; right: -80px; top: 50%; transform: translateY(-50%) rotate(0deg);
  width: 560px; height: 560px; opacity: .5; pointer-events: none; z-index: 1;
}
.swiper-button-prev, .swiper-button-next { color: var(--blue); width: 48px; height: 48px; background: var(--card); border: 1px solid var(--line); border-radius: 50%; box-shadow: var(--shadow); }
.swiper-button-prev::after, .swiper-button-next::after { font-size: 16px; font-weight: 700; }
.swiper-pagination-bullet { width: 10px; height: 10px; background: var(--line); opacity: 1; }
.swiper-pagination-bullet-active { background: var(--blue); }

.btn { display: inline-block; padding: 15px 36px; font-size: 15px; font-weight: 700; border-radius: 10px; border: 1.5px solid var(--blue); cursor: pointer; transition: .2s; font-family: var(--font); background: none; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: #1248d6; border-color: #1248d6; }
.btn-accent { background: var(--orange); border-color: var(--orange); color: #fff; }
.btn-accent:hover { filter: brightness(1.08); }
.btn-ghost { color: var(--ink); border-color: var(--line); margin-left: 12px; background: var(--card); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }

/* ---------- Section ---------- */
.section { padding: 96px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 52px; flex-wrap: wrap; }
.kicker { color: var(--blue); font-size: 12px; letter-spacing: 5px; font-family: var(--mono); margin-bottom: 12px; }
.kicker::before { content: "◆ "; font-size: 8px; vertical-align: 2px; }
.section-head h2 { font-size: 40px; font-weight: 900; line-height: 1.25; letter-spacing: -.5px; }
.section-head p { color: var(--muted); max-width: 440px; font-size: 15px; }

/* ---------- 卡片 ---------- */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 28px 26px; display: flex; flex-direction: column; gap: 12px;
  transition: transform .2s, box-shadow .2s; position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(26,29,33,.08); }
.card .idx { font-size: 11px; color: var(--blue); letter-spacing: 2px; font-family: var(--mono); }
.card h3 { font-size: 18px; font-weight: 800; }
.card p { font-size: 14px; color: var(--muted); flex: 1; }
.card .more { font-size: 13px; color: var(--blue); font-weight: 600; }
.card .thumb { height: 130px; }

/* 应用领域卡片：文字居中 + 鼠标悬停动效 */
.app-cards .card { text-align: center; align-items: center; justify-content: center; transition: transform .25s, box-shadow .25s, border-color .25s, background .25s; }
.app-cards .card:hover {
  transform: translateY(-5px);
  box-shadow: 0 14px 32px rgba(26, 29, 33, .14);
  border-color: var(--blue);
}
.app-cards .card h3 { transition: color .25s; }
.app-cards .card:hover h3 { color: var(--blue); }
.badge { display: inline-block; font-size: 11px; color: var(--orange); border: 1px solid var(--orange); border-radius: 999px; padding: 2px 12px; font-weight: 600; width: fit-content; }

/* ---------- 数据统计（网格底纹 + 等宽数字） ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 40px 24px; text-align: center; position: relative; overflow: hidden; }
.stat::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(circle, rgba(30,94,255,.12) 1px, transparent 1.5px); background-size: 14px 14px; pointer-events: none; }
.stat b { font-size: 52px; font-weight: 900; color: var(--orange); display: block; line-height: 1.1; font-family: var(--mono); position: relative; }
.stat span { color: var(--muted); font-size: 14px; position: relative; }

/* ---------- CTA ---------- */
.cta-band { background: var(--ink); color: #fff; padding: 80px 0; position: relative; overflow: hidden; }
.cta-band::after { content: ""; position: absolute; inset: 0; background-image: radial-gradient(circle, rgba(255,255,255,.18) 1.5px, transparent 2px), repeating-linear-gradient(45deg, rgba(255,255,255,.05) 0 1px, transparent 1px 22px), repeating-linear-gradient(-45deg, rgba(255,255,255,.05) 0 1px, transparent 1px 22px); background-size: 22px 22px, auto, auto; pointer-events: none; }
.cta-band .container { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-band h2 { font-size: 36px; font-weight: 900; }
.cta-band p { opacity: .65; margin-top: 8px; }

/* ---------- 内页页头 ---------- */
.page-hero { padding: 80px 0 56px; background: linear-gradient(180deg, #FDFCF9, var(--bg)); border-bottom: 1px solid var(--line); position: relative; overflow: hidden; }
.page-hero .weave-corner { position: absolute; right: -60px; bottom: -120px; width: 420px; height: 420px; opacity: .6; pointer-events: none; }
.page-hero h1 { font-size: 48px; font-weight: 900; letter-spacing: -1px; position: relative; }
.page-hero p { color: var(--muted); max-width: 640px; margin-top: 14px; position: relative; }
.breadcrumb { font-size: 13px; color: var(--muted); margin-top: 20px; font-family: var(--mono); position: relative; }
.breadcrumb a:hover { color: var(--blue); }

/* ---------- 产品搜索模块（浅色网格美学） ---------- */
.search-module { padding: 56px 0 0; }
.search-panel {
  position: relative; overflow: hidden;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 40px 44px;
}
/* 网格底纹（呼应 CTA / Hero 的网格美学母题） */
.search-panel::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image:
    radial-gradient(circle, rgba(30,94,255,.14) 1.5px, transparent 2px),
    repeating-linear-gradient(45deg, rgba(30,94,255,.05) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(-45deg, rgba(30,94,255,.05) 0 1px, transparent 1px 24px);
  background-size: 22px 22px, auto, auto;
  -webkit-mask-image: linear-gradient(120deg, #000 0%, transparent 60%);
          mask-image: linear-gradient(120deg, #000 0%, transparent 60%);
}
.search-panel > * { position: relative; z-index: 1; }
.search-head { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 22px; }
.search-head .kicker { margin-bottom: 0; }
.search-head h2 { font-size: 24px; font-weight: 900; letter-spacing: -0.5px; }
.search-head p { color: var(--muted); font-size: 14px; }

.search-box {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  background: var(--bg); border: 1.5px solid var(--line); border-radius: 10px;
  padding: 6px 6px 6px 16px; transition: border-color .2s, box-shadow .2s;
}
.search-box:focus-within { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(30,94,255,.1); }
.search-icon { width: 20px; height: 20px; color: var(--blue); flex: none; }
.search-input {
  flex: 1; min-width: 220px; border: none; outline: none; background: transparent;
  font-size: 16px; font-family: var(--font); color: var(--ink); padding: 10px 2px;
}
.search-input::placeholder { color: #B3AE9F; }
.search-cat {
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; font-size: 13.5px;
  font-family: var(--font); background: var(--card); color: var(--ink); outline: none; cursor: pointer;
  transition: border-color .2s;
}
.search-cat:focus { border-color: var(--blue); }
.search-btn { flex: none; padding: 11px 30px; font-size: 15px; letter-spacing: 2px; font-family: var(--mono); font-weight: 700; }

/* 元信息：mono 字体 + 虚线下划线链接，呼应全站风格 */
.search-meta { color: var(--muted); font-size: 13px; margin-top: 18px; font-family: var(--mono); }
.search-meta b { color: var(--blue); font-weight: 700; }
.search-meta a { color: var(--blue); border-bottom: 1px dashed var(--blue); padding-bottom: 1px; }
.search-meta a:hover { color: var(--orange); border-bottom-color: var(--orange); }

/* 空态：虚线边框卡片 */
.search-empty { text-align: center; padding: 72px 24px; background: var(--card); border: 1px dashed var(--line); border-radius: var(--radius); }
.search-empty .kicker { margin-bottom: 8px; }
.search-empty h3 { font-size: 24px; font-weight: 900; margin-bottom: 10px; }
.search-empty p { color: var(--muted); max-width: 460px; margin: 0 auto 28px; }
.search-empty-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------- 应用领域详情 ---------- */
.section-title { font-size: 32px; font-weight: 900; letter-spacing: -0.5px; margin: 10px 0 26px; }
.muted { color: var(--muted); }
.app-solution-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 36px 40px;
}
.app-solution-text { color: var(--muted); font-size: 16px; line-height: 1.8; margin-bottom: 24px; }
.app-solution-detail { max-width: 820px; }
.app-solution-detail h2 { font-size: 28px; font-weight: 900; margin: 10px 0 22px; }
.app-solution-detail .content { color: var(--ink); font-size: 16px; line-height: 1.9; white-space: pre-line; }
.app-card { transition: transform .2s, box-shadow .2s; }
.app-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,.08); }

/* ---------- 产品详情 · 详情介绍富媒体区块 ---------- */
.details-blocks { max-width: 820px; }
.details-blocks > * + * { margin-top: 20px; }
.d-text { color: var(--ink); font-size: 16px; line-height: 1.9; }
.d-table-wrap { overflow-x: auto; }
.d-table { margin: 0; min-width: 480px; }
.d-image { margin: 0; }
.d-image img { width: 100%; border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow); }
.d-image figcaption { color: var(--muted); font-size: 13px; font-family: var(--mono); margin-top: 10px; text-align: center; }
.d-link {
  display: inline-flex; align-items: center; gap: 8px; color: var(--blue); font-weight: 600; font-size: 15px;
  border: 1.5px solid var(--blue); border-radius: 10px; padding: 10px 20px; transition: .2s;
}
.d-link:hover { background: var(--blue); color: #fff; }

/* ---------- 产品详情 ---------- */
.pd-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: start; }
.pd-gallery .main-img { height: 380px; }
.pd-thumbs { display: flex; gap: 10px; margin-top: 12px; }
.pd-thumbs .thumb-grid { width: 84px; height: 84px; cursor: pointer; }
.pd-info h1 { font-size: 36px; font-weight: 900; line-height: 1.3; margin: 10px 0 14px; }
.pd-info .summary { color: var(--muted); font-size: 15px; margin-bottom: 26px; }
.spec-table { width: 100%; border-collapse: collapse; margin: 8px 0 26px; background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.spec-table th, .spec-table td { border: 1px solid var(--line); padding: 13px 18px; font-size: 14px; text-align: left; }
.spec-table th { width: 120px; color: var(--muted); font-weight: 500; background: #FBFAF7; font-family: var(--mono); font-size: 12px; letter-spacing: 1px; }

/* ---------- 产品参数分组手风琴 ---------- */
.spec-accordion { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--card); box-shadow: var(--shadow); margin: 8px 0 26px; }
.spec-group { border-bottom: 1px solid var(--line); }
.spec-group:last-child { border-bottom: none; }
.spec-group summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; padding: 15px 18px; font-size: 14px; font-weight: 600; color: var(--ink); user-select: none; }
.spec-group summary::-webkit-details-marker { display: none; }
.spec-arrow { display: inline-block; width: 22px; height: 22px; line-height: 20px; text-align: center; border-radius: 6px; background: var(--accent-soft, #eef2ff); color: var(--blue); font-weight: 700; font-size: 16px; transition: transform .2s; }
.spec-arrow::before { content: "+"; }
.spec-group[open] .spec-arrow::before { content: "−"; }
.spec-group[open] .spec-arrow { transform: rotate(180deg); }
.spec-accordion .spec-table { margin: 0; box-shadow: none; border-radius: 0; background: transparent; }
.spec-accordion .spec-table th, .spec-accordion .spec-table td { border: none; border-top: 1px dashed var(--line); padding: 11px 18px; }
.spec-accordion .spec-table th { background: transparent; }
.pd-section { padding: 48px 0; }
.pd-section h2 { font-size: 26px; font-weight: 900; margin-bottom: 18px; }
.pd-section .content { color: var(--muted); font-size: 15px; max-width: 780px; white-space: pre-line; }

/* ---------- 服务详情步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 18px; box-shadow: var(--shadow); position: relative; }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--mono); font-size: 22px; font-weight: 700; color: var(--blue); display: block; margin-bottom: 10px; }
.step h4 { font-size: 15px; font-weight: 700; }

/* ---------- 时间线（关于页） ---------- */
.timeline { position: relative; padding-left: 28px; max-width: 720px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 1px; background-image: repeating-linear-gradient(180deg, var(--blue) 0 6px, transparent 6px 12px); }
.timeline li { position: relative; padding: 0 0 28px 20px; }
.timeline li::before { content: ""; position: absolute; left: -26px; top: 8px; width: 11px; height: 11px; border-radius: 50%; background: var(--card); border: 3px solid var(--blue); }
.timeline b { font-family: var(--mono); color: var(--orange); margin-right: 10px; }

/* ---------- 证书墙 ---------- */
.cert-wall { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 30px 20px; text-align: center; }
.cert .thumb-grid { height: 110px; margin-bottom: 14px; display: grid; place-items: center; font-family: var(--mono); color: var(--blue); font-size: 13px; }
.cert h4 { font-size: 14px; }

/* ---------- 新闻 / 案例 ---------- */
.news-item { display: grid; grid-template-columns: 150px 1fr; gap: 28px; padding: 28px 0; border-bottom: 1px dashed var(--line); }
.news-item time { color: var(--blue); font-family: var(--mono); font-size: 13px; }
.news-item h3 { font-size: 19px; font-weight: 800; margin-bottom: 6px; }
.news-item h3 a:hover { color: var(--blue); }
.news-item p { color: var(--muted); font-size: 14px; }
.article { max-width: 780px; }
.article .meta { color: var(--muted); font-family: var(--mono); font-size: 13px; margin: 12px 0 28px; }
.article .content { color: var(--ink); font-size: 16px; white-space: pre-line; }

/* ---------- FAQ ---------- */
.faq-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 14px; box-shadow: var(--shadow); overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: none; color: var(--ink); font-family: var(--font); font-size: 17px; font-weight: 700; padding: 22px 56px 22px 24px; cursor: pointer; position: relative; }
.faq-q::after { content: "+"; position: absolute; right: 24px; top: 50%; transform: translateY(-50%); font-size: 24px; color: var(--blue); font-family: var(--mono); transition: transform .25s; }
.faq-item.open .faq-q::after { transform: translateY(-50%) rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p { color: var(--muted); font-size: 15px; padding: 0 24px 22px; }

/* ---------- 表单 / 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 48px; align-items: start; }
.form-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 36px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.field label i { color: var(--orange); font-style: normal; }
.field input, .field select, .field textarea { width: 100%; background: #FBFAF7; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); padding: 13px 16px; font-size: 15px; font-family: var(--font); transition: border-color .2s; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue); background: #fff; }
.field .err { color: #d93025; font-size: 12px; margin-top: 6px; display: none; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: #d93025; }
.field.invalid .err { display: block; }
textarea { resize: vertical; min-height: 110px; }
.form-ok { display: none; border: 1px solid var(--green); background: rgba(30,158,106,.08); color: var(--green); border-radius: 10px; padding: 18px 22px; margin-top: 18px; font-size: 15px; }
.info-list li { padding: 18px 0; border-bottom: 1px dashed var(--line); font-size: 15px; }
.info-list li b { display: block; color: var(--muted); font-size: 11px; letter-spacing: 3px; margin-bottom: 4px; font-weight: 500; font-family: var(--mono); }
.map-ph { height: 260px; display: grid; place-items: center; color: var(--muted); font-size: 14px; margin-top: 22px; }

/* ---------- 联系页：生产基地与销售中心（日式联系方式版式） ---------- */
.loc-list { border-top: 1px solid var(--line); margin-top: 20px; }
.loc-item { padding: 32px 0; border-bottom: 1px solid var(--line); }
.loc-top { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; }
.loc-head { display: flex; align-items: center; gap: 12px; }
.loc-bars { display: inline-flex; gap: 3px; align-items: stretch; }
.loc-bars i { display: block; width: 5px; height: 22px; background: var(--orange); border-radius: 1px; }
.loc-head h3 { font-size: 18px; font-weight: 800; }
.loc-link { font-size: 13.5px; color: var(--blue); font-weight: 600; white-space: nowrap; }
.loc-link:hover { text-decoration: underline; }
.loc-body { margin-top: 12px; }
.loc-body p { font-size: 14px; color: var(--muted); line-height: 2; }
.loc-body .loc-tel, .loc-body a { color: inherit; }
.loc-body p a { color: var(--ink); font-weight: 600; letter-spacing: .5px; }
.loc-body p a:hover { color: var(--blue); }
.loc-hours { margin-left: 28px; }
.loc-company { font-size: 13px; opacity: .75; }
@media (max-width: 640px) {
  .loc-item { padding: 24px 0; }
  .loc-head h3 { font-size: 16px; }
  .loc-hours { display: block; margin-left: 0; }
}

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.65); padding: 72px 0 0; margin-top: 96px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 56px; }
.footer-grid h5 { font-size: 13px; letter-spacing: 3px; margin-bottom: 18px; color: #fff; font-family: var(--mono); }
.footer-grid li { margin-bottom: 10px; }
.footer-grid a, .footer-grid p { color: rgba(255,255,255,.55); font-size: 13px; }
.footer-grid a:hover { color: #fff; }
.footer-brand .footer-logo { height: 56px; width: auto; display: block; margin-bottom: 18px; filter: brightness(0) invert(1); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 12px; color: rgba(255,255,255,.4); font-family: var(--mono); }
.footer-bottom .beian-links { display: flex; flex-direction: column; gap: 8px; text-align: right; }
.footer-bottom .beian-links a { display: inline-flex; align-items: center; justify-content: flex-end; gap: 5px; white-space: nowrap; }
.footer-bottom .beian-links img { display: inline-block; flex: none; }
@media (max-width: 640px) {
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-bottom .beian-links { text-align: left; gap: 10px; }
  .footer-bottom .beian-links a { justify-content: flex-start; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .mega { grid-template-columns: repeat(3, 1fr); width: 760px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .header-inner { height: 64px; }
  .nav-toggle { display: block; }
  .main-nav { position: fixed; inset: 64px 0 0 0; background: var(--bg); overflow-y: auto; transform: translateX(100%); transition: transform .3s ease; padding: 16px 24px 60px; }
  body.nav-open .main-nav { transform: translateX(0); }
  .main-nav > ul { flex-direction: column; }
  .main-nav > ul > li > a { padding: 15px 0; font-size: 17px; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; }
  .mega { position: static; transform: none; opacity: 1; visibility: visible; width: 100%; max-width: none; display: none; box-shadow: none; border: none; border-bottom: 1px solid var(--line); padding: 12px 0 20px; grid-template-columns: 1fr 1fr; background: transparent; border-radius: 0; columns: 1; max-height: none; overflow-y: visible; }
  li.expanded .mega { display: grid; }
  .drop { position: static; transform: none; opacity: 1; visibility: visible; min-width: 0; width: 100%; display: none; box-shadow: none; border: none; border-bottom: 1px solid var(--line); padding: 4px 0 12px; background: transparent; border-radius: 0; }
  .drop.drop-2col { grid-template-columns: 1fr; min-width: 0; }
  li.expanded .drop { display: block; }
  li.expanded .drop.drop-2col { display: grid; }
  .hero-slide { min-height: 460px; }
  .hero h1 { font-size: 34px; }
  .hero p.sub { font-size: 16px; }
  .hero-art { width: 320px; height: 320px; right: -120px; opacity: .35; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 28px; }
  .page-hero h1 { font-size: 32px; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .pd-grid, .contact-grid, .form-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .cert-wall { grid-template-columns: 1fr 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 4px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .btn-ghost { margin-left: 0; margin-top: 12px; }
  .search-panel { padding: 28px 22px; }
  .search-box { padding: 8px; }
  .search-input { min-width: 100%; }
  .search-cat { width: 100%; }
  .search-btn { width: 100%; }
  .search-head h2 { font-size: 20px; }
}