/* ===========================================================
   Huiheng Blades — 样式表
   工业风：深色金属 + 品牌墨绿 + 高对比
   =========================================================== */

:root {
  --ink: #0E1614;
  --ink-2: #1A2624;
  --ink-3: #24332F;
  --steel: #8A9A96;
  --steel-light: #C7D2CF;
  --paper: #F7F8F7;
  --white: #FFFFFF;
  --brand: #2F7F7F;
  --brand-dark: #236161;
  --brand-light: #3FA0A0;
  --accent: #C9A227;
  --line: #E2E7E5;
  --line-dark: #2E3D39;
  --radius: 4px;
  --max: 1240px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部通栏 ---------- */
.topbar {
  background: var(--ink);
  color: var(--steel-light);
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line-dark);
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.topbar a { color: var(--steel-light); transition: color .2s; }
.topbar a:hover { color: var(--white); }
.topbar-left { display: flex; gap: 20px; align-items: center; }
.topbar-right { display: flex; gap: 16px; align-items: center; }
.lang-switch { display: flex; gap: 2px; }
.lang-switch a {
  padding: 2px 8px; border-radius: 2px; font-size: 12px;
  text-transform: uppercase; letter-spacing: .04em;
}
.lang-switch a.active, .lang-switch a:hover { background: var(--brand); color: var(--white); }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--brand);
  display: grid; place-items: center;
  color: var(--white); font-weight: 800; font-size: 17px;
  letter-spacing: -.02em;
}
.logo-text strong { display: block; font-size: 17px; letter-spacing: -.01em; line-height: 1.1; }
.logo-text span { display: block; font-size: 10.5px; color: var(--steel); letter-spacing: .12em; text-transform: uppercase; }

.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a {
  font-size: 14.5px; font-weight: 500; color: var(--ink-2);
  position: relative; padding: 6px 0; transition: color .2s;
}
.nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--brand); transition: width .25s;
}
.nav-links a:hover { color: var(--brand); }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  background: var(--brand); color: var(--white) !important;
  padding: 10px 20px !important; border-radius: var(--radius);
  font-weight: 600; display: inline-flex; align-items: center; gap: 7px;
  transition: background .2s;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--brand-dark); }

.menu-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 4px 0; transition: .2s; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--ink);
  color: var(--white);
  overflow: hidden;
  padding: 88px 0 96px;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 78% 22%, rgba(47,127,127,.32) 0%, transparent 52%),
    radial-gradient(circle at 12% 88%, rgba(201,162,39,.10) 0%, transparent 45%),
    linear-gradient(135deg, #0E1614 0%, #16211F 100%);
}
.hero-grid {
  position: absolute; inset: 0; opacity: .35;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 64px 64px;
}
.hero .wrap { position: relative; z-index: 2; }
.hero-content { max-width: 720px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 12px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--brand-light); font-weight: 600; margin-bottom: 22px;
}
.eyebrow::before { content: ''; width: 26px; height: 2px; background: var(--brand-light); }

.hero h1 {
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.08; letter-spacing: -.025em;
  font-weight: 800; margin-bottom: 22px;
}
.hero h1 em { font-style: normal; color: var(--brand-light); }

.hero-sub {
  font-size: clamp(16px, 1.6vw, 18.5px);
  color: var(--steel-light); line-height: 1.7;
  max-width: 620px; margin-bottom: 34px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 52px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 14px 28px; border-radius: var(--radius);
  font-weight: 600; font-size: 15px; cursor: pointer;
  border: 1.5px solid transparent; transition: all .22s;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; flex: none; fill: currentColor; }
.btn-primary { background: var(--brand); color: var(--white); }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(47,127,127,.32); }
.btn-ghost { border-color: rgba(255,255,255,.28); color: var(--white); background: transparent; }
.btn-ghost:hover { border-color: var(--white); background: rgba(255,255,255,.06); }
.btn-dark { background: var(--ink); color: var(--white); }
.btn-dark:hover { background: var(--ink-3); }
.btn-wa { background: #25D366; color: #fff; }
.btn-wa:hover { background: #1EBE5A; transform: translateY(-1px); }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0; border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 30px; max-width: 760px;
}
.hero-stat { padding-right: 20px; }
.hero-stat + .hero-stat { border-left: 1px solid rgba(255,255,255,.12); padding-left: 24px; }
.hero-stat b { display: block; font-size: clamp(24px, 3vw, 32px); font-weight: 800; color: var(--white); letter-spacing: -.02em; line-height: 1.1; }
.hero-stat span { display: block; font-size: 12.5px; color: var(--steel); margin-top: 5px; letter-spacing: .02em; }

/* ---------- 通用 section ---------- */
section { padding: 92px 0; }
.section-alt { background: var(--paper); }
.section-dark { background: var(--ink); color: var(--white); }

.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 {
  font-size: clamp(27px, 3.4vw, 40px);
  line-height: 1.16; letter-spacing: -.022em; font-weight: 800;
  margin-bottom: 16px;
}
.section-head p { font-size: 16.5px; color: #55635F; line-height: 1.72; }
.section-dark .section-head p { color: var(--steel-light); }

/* ---------- 产品网格 ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  transition: all .28s;
  display: flex; flex-direction: column;
  position: relative;
}
.product-card:hover {
  border-color: var(--brand);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(14,22,20,.10);
}
.product-card-img {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #EDF1EF, #DDE5E2);
  display: grid; place-items: center;
  overflow: hidden; position: relative;
}
.product-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s; }
.product-card:hover .product-card-img img { transform: scale(1.05); }
.product-card-img .ph { color: var(--steel); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; }

/* 缺图占位卡：比放错图更专业 */
.img-pending {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; padding: 24px; text-align: center;
  background:
    radial-gradient(circle at 70% 25%, rgba(47,127,127,.20) 0%, transparent 58%),
    linear-gradient(150deg, #16211F 0%, #24332F 100%);
}
.img-pending .ip-tag {
  font-size: 10.5px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  color: #0E1614; background: var(--accent); padding: 4px 10px; border-radius: 2px;
}
.img-pending b { font-size: 16px; font-weight: 800; color: #fff; line-height: 1.3; letter-spacing: -.01em; }
.img-pending small { font-size: 12px; color: var(--steel-light); line-height: 1.5; }
html[lang="zh-CN"] .img-pending .ip-tag { letter-spacing: .04em; }
.product-num {
  position: absolute; top: 12px; left: 12px;
  background: rgba(14,22,20,.78); color: var(--white);
  font-size: 11px; font-weight: 700; letter-spacing: .1em;
  padding: 4px 9px; border-radius: 2px;
}
.product-card-body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.product-card-body h3 {
  font-size: 18px; font-weight: 700; letter-spacing: -.012em;
  margin-bottom: 8px; line-height: 1.3;
}
.product-card-body .zh { font-size: 12.5px; color: var(--brand); font-weight: 600; margin-bottom: 10px; letter-spacing: .02em; }
.product-card-body p { font-size: 14px; color: #5C6B67; line-height: 1.62; flex: 1; }
.product-card-link {
  margin-top: 16px; font-size: 13.5px; font-weight: 700;
  color: var(--brand); display: inline-flex; align-items: center; gap: 6px;
}
.product-card-link svg { transition: transform .25s; }
.product-card:hover .product-card-link svg { transform: translateX(4px); }

/* ---------- 应用行业 ---------- */
.app-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.app-card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: 6px; padding: 28px 24px;
  transition: all .25s;
}
.app-card:hover { border-color: var(--brand); box-shadow: 0 10px 30px rgba(14,22,20,.07); }
.app-icon { width: 44px; height: 44px; border-radius: 8px; background: rgba(47,127,127,.10); display: grid; place-items: center; margin-bottom: 18px; color: var(--brand); }
.app-card h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 8px; }
.app-card p { font-size: 14px; color: #5C6B67; line-height: 1.62; }

/* ---------- 信任区 ---------- */
.trust-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 26px; }
.trust-item { padding: 30px 26px; background: var(--white); border-radius: 6px; border: 1px solid var(--line); }
.trust-item .num {
  font-size: 13px; font-weight: 800; color: var(--brand);
  letter-spacing: .1em; margin-bottom: 14px; display: block;
}
.trust-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; line-height: 1.35; }
.trust-item p { font-size: 14px; color: #5C6B67; line-height: 1.68; }

/* ---------- 材质表 ---------- */
.table-scroll { overflow-x: auto; border-radius: 6px; border: 1px solid var(--line); background: var(--white); }
table.specs { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 720px; }
table.specs th {
  background: var(--ink-2); color: var(--white);
  text-align: left; padding: 14px 16px;
  font-size: 12.5px; font-weight: 600; letter-spacing: .05em; text-transform: uppercase;
  white-space: nowrap;
}
table.specs td { padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; line-height: 1.55; }
table.specs tr:last-child td { border-bottom: 0; }
table.specs tbody tr:nth-child(even) { background: #FAFBFA; }
table.specs tbody tr:hover { background: #F1F6F4; }
table.specs td:first-child { font-weight: 700; color: var(--ink); white-space: nowrap; }
table.specs .grade { font-weight: 700; color: var(--brand-dark); }

/* ---------- 产品详情 ---------- */
.breadcrumb { font-size: 13px; color: var(--steel); padding: 20px 0; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb span { margin: 0 8px; }

.page-hero {
  background: var(--ink); color: var(--white);
  padding: 56px 0 64px; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 85% 20%, rgba(47,127,127,.26) 0%, transparent 55%);
}
.page-hero .wrap { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(28px, 4vw, 44px); line-height: 1.12; letter-spacing: -.025em; font-weight: 800; margin-bottom: 16px; max-width: 860px; }
.page-hero p.lede { font-size: 17px; color: var(--steel-light); max-width: 720px; line-height: 1.7; }
.page-hero .zh-tag {
  display: inline-block; font-size: 12.5px; color: var(--brand-light);
  font-weight: 600; letter-spacing: .06em; margin-bottom: 14px;
  border-left: 2px solid var(--brand); padding-left: 10px;
}

/* ---------- 工厂直营标识 ---------- */
.fd-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--accent); color: var(--ink);
  font-size: 11.5px; font-weight: 800; letter-spacing: .09em;
  text-transform: uppercase;
  padding: 5px 11px; border-radius: 2px;
  margin-bottom: 16px;
}
.fd-badge svg { width: 13px; height: 13px; }

.hero-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 24px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid rgba(255,255,255,.22); border-radius: 100px;
  padding: 6px 14px; font-size: 12.5px; color: var(--steel-light);
  font-weight: 500;
}
.hero-tag b { color: var(--white); font-weight: 700; }

/* ---------- 车间/视频板块 ---------- */
.factory-split {
  display: grid; grid-template-columns: 1.15fr .85fr;
  gap: 44px; align-items: start;
}
.video-slot {
  position: relative; border-radius: 8px; overflow: hidden;
  background: var(--ink-2); aspect-ratio: 16/10;
  border: 1px solid var(--line-dark);
}
.video-slot video, .video-slot img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.video-slot .v-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(14,22,20,.08) 0%, rgba(14,22,20,.82) 100%);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 24px;
}
.video-slot .v-play {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 66px; height: 66px; border-radius: 50%;
  background: rgba(255,255,255,.94); display: grid; place-items: center;
  box-shadow: 0 10px 30px rgba(0,0,0,.3);
}
.video-slot .v-play::after {
  content: ''; width: 0; height: 0;
  border-left: 18px solid var(--ink); border-top: 11px solid transparent;
  border-bottom: 11px solid transparent; margin-left: 5px;
}
.video-slot .v-label {
  position: relative; z-index: 2;
  color: var(--white); font-size: 15px; font-weight: 700; line-height: 1.4;
}
.video-slot .v-sub {
  position: relative; z-index: 2;
  color: var(--steel-light); font-size: 12.5px; line-height: 1.55; margin-top: 6px;
}
.video-slot .v-badge {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  background: rgba(14,22,20,.72); color: var(--white);
  font-size: 10.5px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; padding: 5px 10px; border-radius: 2px;
  border: 1px solid rgba(255,255,255,.2);
}

.equip-table { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 6px; }
.equip-table tr { border-bottom: 1px solid var(--line); }
.equip-table tr:last-child { border-bottom: 0; }
.equip-table td { padding: 11px 0; vertical-align: middle; }
.equip-table td:first-child { color: #4A5754; padding-right: 16px; }
.equip-table td:last-child { text-align: right; font-weight: 700; color: var(--brand-dark); white-space: nowrap; }

/* 工艺流程 */
.process-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 0; counter-reset: step; }
.process-step {
  padding: 26px 26px 26px 0; border-top: 1px solid rgba(255,255,255,.14);
  position: relative;
}
.process-step .p-num {
  display: inline-block; font-size: 12px; font-weight: 800;
  color: var(--brand-light); letter-spacing: .1em; margin-bottom: 12px;
}
.process-step h3 { font-size: 16px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.process-step p { font-size: 13.5px; color: var(--steel); line-height: 1.68; }

/* 工厂直营四条 */
.fd-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 24px; }
.fd-item {
  background: var(--white); border: 1px solid var(--line);
  border-left: 3px solid var(--brand);
  border-radius: 4px; padding: 30px 26px;
}
.fd-item .num {
  font-size: 12px; font-weight: 800; color: var(--brand);
  letter-spacing: .12em; display: block; margin-bottom: 14px;
}
.fd-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; line-height: 1.35; }
.fd-item p { font-size: 14px; color: #5C6B67; line-height: 1.68; }

/* 材料卡片（材料中心） */
.mat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.mat-card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: 6px; padding: 26px 24px; transition: all .25s;
  display: flex; flex-direction: column;
}
.mat-card:hover { border-color: var(--brand); box-shadow: 0 14px 34px rgba(14,22,20,.09); transform: translateY(-3px); }
.mat-card .m-grade { font-size: 20px; font-weight: 800; letter-spacing: -.02em; color: var(--ink); margin-bottom: 6px; }
.mat-card .m-hr { font-size: 12.5px; font-weight: 700; color: var(--brand); letter-spacing: .03em; margin-bottom: 14px; }
.mat-card p { font-size: 14px; color: #5C6B67; line-height: 1.65; flex: 1; }
.mat-card .m-link { margin-top: 16px; font-size: 13.5px; font-weight: 700; color: var(--brand); display: inline-flex; align-items: center; gap: 6px; }

/* 材质页 pros/cons */
.pc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 10px; }
.pc-box { border: 1px solid var(--line); border-radius: 6px; padding: 24px 22px; background: var(--white); }
.pc-box h4 { font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 14px; }
.pc-box.pros h4 { color: var(--brand); }
.pc-box.cons h4 { color: #B4532A; }
.pc-box ul { list-style: none; }
.pc-box ul li { position: relative; padding-left: 22px; font-size: 14px; color: #4A5754; line-height: 1.6; margin-bottom: 10px; }
.pc-box.pros ul li::before { content: '+'; position: absolute; left: 0; font-weight: 800; color: var(--brand); }
.pc-box.cons ul li::before { content: '−'; position: absolute; left: 0; font-weight: 800; color: #B4532A; }

.note-band {
  background: rgba(47,127,127,.06); border-left: 3px solid var(--brand);
  padding: 18px 22px; border-radius: 0 4px 4px 0; margin: 22px 0;
  font-size: 14.5px; color: #3D4A47; line-height: 1.7;
}

/* 语言切换 —— 只显示 publicSite 的语言 */
.lang-switch a.hidden-lang { display: none; }

/* 工厂照片墙 */
.photo-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; grid-template-rows: auto auto; gap: 12px; margin-top: 32px; }
.photo-grid figure { overflow: hidden; border-radius: 6px; background: var(--ink-2); margin: 0; position: relative; }
.photo-grid figure:first-child { grid-row: span 2; }
.photo-grid img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s; }
.photo-grid figure:hover img { transform: scale(1.04); }
.photo-grid figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 26px 16px 12px; font-size: 12.5px; color: var(--white);
  background: linear-gradient(transparent, rgba(14,22,20,.82));
}

/* 中文版排版（汉字字重偏虚，需要单独调） */
html[lang="zh-CN"] body { font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", sans-serif; line-height: 1.78; }
html[lang="zh-CN"] .hero h1,
html[lang="zh-CN"] .section-head h2,
html[lang="zh-CN"] .page-hero h1 { letter-spacing: 0; font-weight: 800; line-height: 1.22; }
html[lang="zh-CN"] .detail-main h2 { letter-spacing: 0; }
html[lang="zh-CN"] .product-card-body h3 { letter-spacing: 0; }
html[lang="zh-CN"] .eyebrow,
html[lang="zh-CN"] .fd-badge,
html[lang="zh-CN"] .video-slot .v-badge,
html[lang="zh-CN"] footer h4 { letter-spacing: .04em; }
html[lang="zh-CN"] .zh { display: none; }
html[lang="zh-CN"] .en-only { display: none; }

/* 中文审校版提示条 */
.zh-review-banner {
  background: #FFF6E0; border-bottom: 1px solid #E8D9A8;
  padding: 9px 0; font-size: 13px; color: #6B5518;
}
.zh-review-banner .wrap { display: flex; gap: 10px; align-items: center; }
.zh-review-banner b { color: #4A3A0C; }

.detail-layout { display: grid; grid-template-columns: 1fr 340px; gap: 56px; align-items: start; }

/* 产品详情主图 */
.detail-figure {
  margin: 0 0 40px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  overflow: hidden;
}
.detail-figure img { width: 100%; height: auto; display: block; }
.detail-main h2 {
  font-size: 24px; font-weight: 800; letter-spacing: -.018em;
  margin: 48px 0 18px; padding-bottom: 12px;
  border-bottom: 2px solid var(--line);
}
.detail-main h2:first-child { margin-top: 0; }
.detail-main p { font-size: 15.5px; color: #4A5754; line-height: 1.78; margin-bottom: 14px; }
.detail-main ul.checks { list-style: none; margin: 8px 0 0; }
.detail-main ul.checks li {
  position: relative; padding-left: 28px; margin-bottom: 12px;
  font-size: 15px; color: #3D4A47; line-height: 1.6;
}
.detail-main ul.checks li::before {
  content: '✓'; position: absolute; left: 0; top: 0;
  color: var(--brand); font-weight: 800;
}

/* 侧边询盘框 */
.quote-box {
  position: sticky; top: 92px;
  background: var(--ink); color: var(--white);
  border-radius: 8px; padding: 30px 26px;
  box-shadow: 0 18px 46px rgba(14,22,20,.18);
}
.quote-box h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; letter-spacing: -.01em; }
.quote-box .sub { font-size: 13.5px; color: var(--steel-light); margin-bottom: 22px; line-height: 1.6; }
.quote-box .field { margin-bottom: 12px; }
.quote-box input, .quote-box textarea, .quote-box select {
  width: 100%; padding: 11px 13px; border-radius: 4px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06); color: var(--white);
  font-size: 14px; transition: border-color .2s;
}
.quote-box input::placeholder, .quote-box textarea::placeholder { color: rgba(199,210,207,.55); }
.quote-box input:focus, .quote-box textarea:focus, .quote-box select:focus {
  outline: none; border-color: var(--brand-light); background: rgba(255,255,255,.1);
}
.quote-box textarea { resize: vertical; min-height: 76px; }
.quote-box .btn { width: 100%; margin-top: 6px; }
.quote-box .divider { text-align: center; font-size: 11.5px; color: var(--steel); margin: 18px 0 14px; letter-spacing: .1em; text-transform: uppercase; position: relative; }
.quote-box .divider::before, .quote-box .divider::after {
  content: ''; position: absolute; top: 50%; width: 34%; height: 1px; background: rgba(255,255,255,.14);
}
.quote-box .divider::before { left: 0; } .quote-box .divider::after { right: 0; }
.quote-box .contact-line {
  display: flex; align-items: center; gap: 10px;
  font-size: 13.5px; color: var(--steel-light); margin-bottom: 10px;
}
.quote-box .contact-line b { color: var(--white); font-weight: 600; }

/* 参数表 */
.spec-table-wrap { margin: 8px 0 0; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec-table tr { border-bottom: 1px solid var(--line); }
.spec-table tr:last-child { border-bottom: 0; }
.spec-table td { padding: 13px 4px; vertical-align: top; line-height: 1.6; }
.spec-table td:first-child {
  width: 34%; font-weight: 700; color: var(--ink);
  padding-right: 20px;
}
.spec-table td:last-child { color: #4A5754; }

/* FAQ */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; background: none; border: 0; text-align: left;
  padding: 20px 40px 20px 0; cursor: pointer;
  font-size: 16px; font-weight: 700; color: var(--ink);
  position: relative; line-height: 1.45; transition: color .2s;
}
.faq-q:hover { color: var(--brand); }
.faq-q::after {
  content: '+'; position: absolute; right: 6px; top: 50%;
  transform: translateY(-50%); font-size: 22px; font-weight: 400;
  color: var(--brand); transition: transform .25s;
}
.faq-item.open .faq-q::after { transform: translateY(-50%) rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .32s ease; }
.faq-a-inner { padding: 0 40px 22px 0; font-size: 15px; color: #4A5754; line-height: 1.75; }
.faq-item.open .faq-a { max-height: 500px; }

/* ---------- CTA 带 ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--brand-dark), var(--brand) 55%, #3E9494);
  color: var(--white); padding: 72px 0; text-align: center;
}
.cta-band h2 { font-size: clamp(26px, 3.2vw, 38px); font-weight: 800; letter-spacing: -.022em; margin-bottom: 14px; line-height: 1.2; }
.cta-band p { font-size: 16.5px; color: rgba(255,255,255,.88); max-width: 620px; margin: 0 auto 30px; line-height: 1.7; }
.cta-band .hero-actions { justify-content: center; margin-bottom: 0; }
.cta-band .btn-ghost { border-color: rgba(255,255,255,.5); }
.cta-band .btn-ghost:hover { background: rgba(255,255,255,.14); border-color: var(--white); }

/* ---------- 页脚 ---------- */
footer { background: var(--ink); color: var(--steel-light); padding: 68px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 44px; padding-bottom: 52px; }
.footer-brand .logo-mark { margin-bottom: 16px; }
.footer-brand strong { color: var(--white); font-size: 16px; display: block; margin-bottom: 10px; }
.footer-brand p { font-size: 13.5px; line-height: 1.7; color: var(--steel); max-width: 300px; }
footer h4 { color: var(--white); font-size: 13px; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 18px; font-weight: 700; }
footer ul { list-style: none; }
footer ul li { margin-bottom: 9px; }
footer ul a { font-size: 13.5px; color: var(--steel); transition: color .2s; }
footer ul a:hover { color: var(--brand-light); }
.footer-contact div { margin-bottom: 12px; font-size: 13.5px; line-height: 1.6; }
.footer-contact b { color: var(--white); font-weight: 600; }
.footer-bottom {
  border-top: 1px solid var(--line-dark);
  padding: 22px 0; font-size: 12.5px; color: #6D7B77;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}

/* ---------- 浮动 WhatsApp ---------- */
.float-wa {
  position: fixed; right: 22px; bottom: 22px; z-index: 200;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; display: grid; place-items: center;
  box-shadow: 0 8px 28px rgba(37,211,102,.42);
  transition: transform .22s;
}
.float-wa:hover { transform: scale(1.08); }
.float-wa svg { width: 30px; height: 30px; fill: #fff; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .detail-layout { grid-template-columns: 1fr; gap: 40px; }
  .quote-box { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .factory-split { grid-template-columns: 1fr; gap: 32px; }
  .photo-grid { grid-template-columns: 1fr 1fr; }
  .photo-grid figure:first-child { grid-row: span 1; grid-column: span 2; }
  .pc-grid { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .nav-links {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--white); flex-direction: column; gap: 0;
    padding: 8px 24px 20px; border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 30px rgba(0,0,0,.08);
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: 13px 0; border-bottom: 1px solid var(--line); }
  .nav-links a::after { display: none; }
  .nav-cta { margin-top: 14px; justify-content: center; border-bottom: 0 !important; }
  .menu-toggle { display: block; }
  .hero { padding: 64px 0 72px; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 22px 0; }
  .hero-stat:nth-child(3) { border-left: 0; padding-left: 0; }
  .hero-stat:nth-child(n+3) { border-top: 1px solid rgba(255,255,255,.12); padding-top: 20px; }
  section { padding: 64px 0; }
  .topbar-left span:first-child { display: none; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 18px; }
  .hero-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .topbar { font-size: 11.5px; }
  .product-grid { grid-template-columns: 1fr; }
  .quote-box { padding: 24px 20px; }
  .photo-grid { grid-template-columns: 1fr; }
  .photo-grid figure:first-child { grid-column: span 1; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
}

/* ---------- 技术文章 ---------- */
.article-list { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 34px; }
.article-list.three { grid-template-columns: repeat(3, 1fr); }
.article-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 26px; display: flex; flex-direction: column; gap: 10px; transition: border-color .2s, box-shadow .2s;
}
.article-card:hover { border-color: var(--brand); box-shadow: 0 6px 18px rgba(14,22,20,.06); }
.article-meta { font-size: 12.5px; color: var(--steel); letter-spacing: .04em; }
.article-card h3 { font-size: 17px; line-height: 1.45; color: var(--ink); }
.article-card p { font-size: 14px; color: var(--steel); line-height: 1.7; flex: 1; }
.article-wrap { max-width: 820px; }
.article-body h2 { font-size: 22px; margin: 40px 0 14px; }
.article-body h2:first-child { margin-top: 6px; }
.article-body p { font-size: 16px; line-height: 1.9; color: #2A3733; margin-bottom: 16px; }
.article-body ul { margin: 0 0 16px 22px; }
.article-body li { font-size: 15.5px; line-height: 1.85; color: #2A3733; margin-bottom: 8px; }
.article-hero .lede { max-width: 720px; }
.article-cta {
  margin-top: 44px; padding: 26px 28px; background: rgba(47,127,127,.07);
  border: 1px solid rgba(47,127,127,.25); border-radius: var(--radius);
  display: flex; align-items: center; justify-content: space-between; gap: 22px; flex-wrap: wrap;
}
.article-cta p { margin: 0; font-size: 15px; color: var(--ink); flex: 1; min-width: 260px; }
.article-cta > div { display: flex; gap: 12px; flex-wrap: wrap; }
.article-prevnext {
  max-width: 820px; display: flex; justify-content: space-between; gap: 16px;
  margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line);
}
.article-prevnext a { font-size: 14.5px; color: var(--brand); font-weight: 600; max-width: 46%; }
.article-prevnext a:hover { text-decoration: underline; }
@media (max-width: 900px) {
  .article-list, .article-list.three { grid-template-columns: 1fr; }
}

/* ===== 刀型清单 Blade types ===== */
.blade-note { font-size: .92em; color: var(--steel); margin: -6px 0 14px; }
.blade-list { display: flex; flex-wrap: wrap; gap: 8px; }
.blade-chip {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  font-size: .9em;
  color: var(--ink-2);
}
.dark .blade-chip, [data-theme="dark"] .blade-chip { background: var(--ink-2); border-color: var(--ink-3); color: var(--steel-light); }

/* ===== 刀型清单 Blade types ===== */
.blade-note { font-size: .92em; color: var(--steel); margin: -6px 0 14px; }
.blade-list { display: flex; flex-wrap: wrap; gap: 8px; }
.blade-chip {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  font-size: .9em;
  color: var(--ink-2);
}
.dark .blade-chip, [data-theme="dark"] .blade-chip { background: var(--ink-2); border-color: var(--ink-3); color: var(--steel-light); }