@charset "UTF-8";
/* ==========================================================
   上海鱼童实业有限公司 · 站点样式
   科技极简 / 浅色 / 单一强调色
   ========================================================== */

:root {
  --ink: #0C1517;
  --ink-2: #26383A;
  --muted: #6E7C7B;
  --muted-2: #9AA6A5;
  --line: #E4E9E8;
  --line-2: #EFF3F2;
  --bg: #FFFFFF;
  --surf: #F7F9F8;
  --accent: #0E7C6B;
  --accent-2: #12A18A;
  --accent-soft: #E8F3F0;
  --radius: 2px;
  --ff: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --ff-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --shadow: 0 1px 2px rgba(12, 21, 23, .04), 0 18px 40px -28px rgba(12, 21, 23, .28);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--ff);
  color: var(--ink);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
::selection { background: var(--accent); color: #fff; }

.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 30px; }
.mono { font-family: var(--ff-mono); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav {
  height: 70px;
  display: flex; align-items: center; gap: 34px;
}
.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand-mark {
  width: 34px; height: 34px; flex: 0 0 auto;
  border: 1px solid var(--ink);
  display: grid; place-items: center;
  position: relative;
}
.brand-mark svg { width: 20px; height: 20px; }
.brand-yt {
  font-family: var(--ff-mono); font-size: 13px; font-weight: 700;
  letter-spacing: .04em; line-height: 1; color: var(--ink);
}
.brand-txt { display: flex; flex-direction: column; line-height: 1.2; }
.brand-cn { font-size: 15px; font-weight: 600; letter-spacing: .06em; }
.brand-en {
  font-family: var(--ff-mono); font-size: 9px; letter-spacing: .13em;
  color: var(--muted-2); text-transform: uppercase;
}
.nav-links { display: flex; align-items: center; gap: 30px; margin-left: auto; }
.nav-links a {
  font-size: 13.5px; color: var(--ink-2); position: relative; padding: 4px 0;
  transition: color .2s;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 0;
  background: var(--accent); transition: width .28s cubic-bezier(.4,0,.2,1);
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--accent); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
/* ---------- 语言切换器 ---------- */
.lang-switch { display: flex; align-items: center; gap: 2px; margin-right: 6px; }
.lang-btn {
  background: none; border: 0; padding: 6px 7px; cursor: pointer;
  font-family: var(--ff-mono); font-size: 11px; letter-spacing: .04em;
  color: var(--muted); line-height: 1; border-bottom: 1px solid transparent;
  transition: color .15s;
}
.lang-btn:hover { color: var(--ink); }
.lang-btn.active { color: var(--ink); border-bottom-color: var(--ink); font-weight: 700; }
.lang-btn + .lang-btn { margin-left: 2px; }
@media (max-width: 960px) {
  .lang-switch { flex-wrap: wrap; gap: 0; margin: 0 8px 0 0; }
  .lang-btn { padding: 5px 5px; font-size: 10.5px; }
}
.nav-toggle {
  display: none; width: 38px; height: 38px; border: 1px solid var(--line);
  background: #fff; align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 16px; height: 1px; background: var(--ink); position: relative; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 16px; height: 1px; background: var(--ink);
}
.nav-toggle span::before { top: -5px; } .nav-toggle span::after { top: 5px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  height: 42px; padding: 0 22px;
  border: 1px solid var(--ink); background: var(--ink); color: #fff;
  font-size: 13.5px; letter-spacing: .03em;
  transition: background .2s, border-color .2s, color .2s, transform .2s;
}
.btn:hover { background: var(--accent); border-color: var(--accent); transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--ink); background: transparent; color: var(--accent); }
.btn svg { width: 14px; height: 14px; }
.btn-sm { height: 36px; padding: 0 16px; font-size: 12.5px; }

/* ---------- 通用区块 ---------- */
.section { padding: 92px 0; border-top: 1px solid var(--line-2); }
.section.tight { padding: 64px 0; }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 44px; }
.eyebrow {
  font-family: var(--ff-mono); font-size: 10.5px; letter-spacing: .22em;
  text-transform: uppercase; color: var(--accent); display: flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--accent); }
h2.sec-title {
  font-size: clamp(24px, 3vw, 34px); font-weight: 600; letter-spacing: -.01em;
  margin: 14px 0 0; line-height: 1.35;
}
.sec-desc { color: var(--muted); max-width: 520px; margin: 0; font-size: 14px; }
.sec-link {
  font-size: 13px; color: var(--ink-2); display: inline-flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--line); padding-bottom: 3px; white-space: nowrap;
  transition: color .2s, border-color .2s;
}
.sec-link:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- 首屏 ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 108px 0 96px;
  border-bottom: 1px solid var(--line-2);
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line-2) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-2) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(ellipse 78% 70% at 72% 22%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 78% 70% at 72% 22%, #000 0%, transparent 78%);
  opacity: .85;
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.15fr .85fr; gap: 70px; align-items: center; }
.hero h1 {
  font-size: clamp(32px, 4.4vw, 56px); line-height: 1.22; letter-spacing: -.025em;
  font-weight: 600; margin: 20px 0 0;
}
.hero h1 em { font-style: normal; color: var(--accent); position: relative; }
.hero h1 em::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 6px; height: 8px;
  background: var(--accent-soft); z-index: -1;
}
.hero p.lead { margin: 24px 0 0; font-size: 15.5px; color: var(--muted); max-width: 540px; }
.hero-actions { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }
.hero-meta {
  margin-top: 46px; display: flex; gap: 40px; flex-wrap: wrap;
  border-top: 1px solid var(--line); padding-top: 22px;
}
.hero-meta div b { display: block; font-family: var(--ff-mono); font-size: 20px; font-weight: 500; letter-spacing: -.02em; }
.hero-meta div span { font-size: 12px; color: var(--muted); }

/* ---------- 实景图片 ---------- */
.photo-band { border: 1px solid var(--line); overflow: hidden; line-height: 0; background: var(--surf); }
.photo-band img { width: 100%; height: 240px; object-fit: cover; display: block; transition: transform .5s ease; }
.photo-band:hover img { transform: scale(1.03); }
.photo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.photo-grid .photo-band img { height: 300px; }
.photo-cap { display: flex; justify-content: space-between; padding: 10px 14px; border-top: 1px solid var(--line); background: #fff; line-height: 1.5; font-size: 12px; color: var(--muted-2); font-family: var(--ff-mono); letter-spacing: .06em; }

/* 首屏右侧规格卡 */
.spec-card {
  border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow);
  position: relative;
}
.spec-card::before {
  content: ""; position: absolute; top: -1px; left: -1px; width: 54px; height: 54px;
  border-top: 1px solid var(--accent); border-left: 1px solid var(--accent);
}
.spec-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 20px; border-bottom: 1px solid var(--line);
  font-family: var(--ff-mono); font-size: 10px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--muted);
}
.spec-head .dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; display: inline-block; margin-right: 7px; }
.spec-body { padding: 6px 20px 18px; }
.spec-row {
  display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  padding: 13px 0; border-bottom: 1px dashed var(--line);
  font-size: 13px;
}
.spec-row:last-child { border-bottom: 0; }
.spec-row span { color: var(--muted); white-space: nowrap; }
.spec-row b { font-weight: 500; text-align: right; font-family: var(--ff-mono); font-size: 12.5px; letter-spacing: 0; }
.spec-foot {
  padding: 12px 20px; border-top: 1px solid var(--line); background: var(--surf);
  font-size: 11.5px; color: var(--muted); display: flex; justify-content: space-between;
}

/* ---------- 产品线卡片 ---------- */
.cat-grid {
  display: flex; flex-wrap: wrap; gap: 1px; background: var(--line);
  border: 1px solid var(--line);
}
.cat-card {
  flex: 1 1 calc(33.333% - 1px); min-width: 218px; padding: 30px 24px 26px; background: #fff;
  display: flex; flex-direction: column; min-height: 310px;
  transition: background .25s, transform .25s; position: relative; overflow: hidden;
}
.cat-card:hover { background: var(--surf); }
.cat-card::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--accent); transition: width .35s cubic-bezier(.4,0,.2,1);
}
.cat-card:hover::after { width: 100%; }
.cat-no { font-family: var(--ff-mono); font-size: 11px; color: var(--muted-2); letter-spacing: .1em; }
.cat-card h3 { font-size: 17px; font-weight: 600; margin: 18px 0 4px; letter-spacing: .01em; }
.cat-en { font-family: var(--ff-mono); font-size: 9.5px; letter-spacing: .14em; color: var(--accent); text-transform: uppercase; }
.cat-card p { color: var(--muted); font-size: 13px; margin: 16px 0 0; line-height: 1.8; }
.cat-foot {
  margin-top: auto; padding-top: 20px; display: flex; justify-content: space-between;
  align-items: center; font-size: 12px; color: var(--muted);
}
.cat-foot b { font-family: var(--ff-mono); color: var(--ink); font-weight: 500; }
.arrow { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.4; transition: transform .25s; }
.cat-card:hover .arrow { transform: translateX(3px); color: var(--accent); }

/* ---------- 产品目录 ---------- */
.toolbar {
  position: sticky; top: 70px; z-index: 40;
  background: rgba(255,255,255,.94); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}
.toolbar-inner { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  height: 34px; padding: 0 15px; border: 1px solid var(--line); background: #fff;
  font-size: 12.5px; color: var(--ink-2); display: inline-flex; align-items: center; gap: 8px;
  transition: all .2s;
}
.chip b { font-family: var(--ff-mono); font-size: 10px; color: var(--muted-2); font-weight: 400; }
.chip:hover { border-color: var(--ink-2); }
.chip.active { background: var(--ink); border-color: var(--ink); color: #fff; }
.chip.active b { color: rgba(255,255,255,.6); }
.search-box { margin-left: auto; position: relative; }
.search-box input {
  width: 260px; height: 34px; border: 1px solid var(--line); background: #fff;
  padding: 0 36px 0 34px; font-size: 12.5px; font-family: inherit; color: var(--ink);
  outline: none; transition: border-color .2s;
}
.search-box input:focus { border-color: var(--accent); }
.search-box input::placeholder { color: var(--muted-2); }
.search-box .ico {
  position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
  width: 14px; height: 14px; stroke: var(--muted-2); fill: none; stroke-width: 1.5;
}

.catalog { padding: 44px 0 96px; min-height: 60vh; }
.group { margin-bottom: 46px; }
.group-head {
  display: flex; align-items: baseline; gap: 14px; margin-bottom: 18px;
  padding-bottom: 10px; border-bottom: 1px solid var(--ink);
}
.group-head h3 { font-size: 14px; font-weight: 600; margin: 0; letter-spacing: .04em; }
.group-head .gno { font-family: var(--ff-mono); font-size: 10px; color: var(--accent); letter-spacing: .1em; }
.group-head .gcount { margin-left: auto; font-family: var(--ff-mono); font-size: 10.5px; color: var(--muted-2); }

.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.prod {
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 22px 22px 18px; background: #fff; cursor: pointer;
  transition: background .22s; position: relative; display: flex; flex-direction: column;
}
.prod:hover { background: var(--surf); }
.prod-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.prod h4 { font-size: 15px; font-weight: 600; margin: 0; letter-spacing: .01em; }
.prod .pid {
  font-family: var(--ff-mono); font-size: 10px; letter-spacing: .06em; color: var(--accent);
  border: 1px solid var(--accent-soft); background: var(--accent-soft);
  padding: 1px 6px; white-space: nowrap; flex: 0 0 auto;
}
.tag-own {
  display: inline-block; font-family: var(--ff-mono); font-size: 9px; letter-spacing: .08em;
  color: var(--accent); border: 1px solid var(--accent); padding: 0 4px; margin-left: 8px;
  vertical-align: 2px; white-space: nowrap;
}
.prod.is-own::before {
  content: ""; position: absolute; left: -1px; top: -1px; bottom: -1px; width: 2px;
  background: var(--accent); z-index: 1;
}
.prod .palias { font-size: 12px; color: var(--muted-2); margin: 7px 0 0; line-height: 1.6; }
.prod .papp {
  font-size: 12.5px; color: var(--muted); margin: 14px 0 0; line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.prod-foot {
  margin-top: 16px; padding-top: 12px; border-top: 1px dashed var(--line);
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--ff-mono); font-size: 10px; color: var(--muted-2); letter-spacing: .04em;
}
.prod-foot .plus { color: var(--ink); font-size: 13px; transition: color .2s, transform .2s; }
.prod:hover .prod-foot .plus { color: var(--accent); transform: rotate(90deg); }

.empty { padding: 80px 0; text-align: center; color: var(--muted); }
.empty b { display: block; font-family: var(--ff-mono); font-size: 12px; letter-spacing: .2em; color: var(--muted-2); margin-bottom: 10px; }

/* ---------- 要点列表 ---------- */
.plist { list-style: none; padding: 0; margin: 22px 0 0; }
.plist li {
  position: relative; padding: 9px 0 9px 22px; border-bottom: 1px dashed var(--line);
  font-size: 13px; color: var(--ink-2); line-height: 1.7;
}
.plist li:last-child { border-bottom: 0; }
.plist li::before {
  content: ""; position: absolute; left: 2px; top: 17px; width: 5px; height: 5px;
  background: var(--accent);
}

/* ---------- 应用行业 ---------- */
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.app-item { background: #fff; padding: 26px 26px 24px; transition: background .25s; }
.app-item:hover { background: var(--surf); }
.app-item .ano { font-family: var(--ff-mono); font-size: 10px; color: var(--muted-2); letter-spacing: .12em; }
.app-item h4 { font-size: 14.5px; font-weight: 600; margin: 14px 0 8px; }
.app-item p { font-size: 12.5px; color: var(--muted); margin: 0; line-height: 1.75; }

/* ---------- 供应链流程 ---------- */
.chain { border: 1px solid var(--line); background: #fff; }
.chain-row { display: grid; grid-template-columns: 1fr 92px 1fr 92px 1fr; align-items: stretch; }
.chain-cell { padding: 28px 26px; }
.chain-mid {
  display: grid; place-items: center; border-left: 1px solid var(--line); border-right: 1px solid var(--line);
  background: var(--surf);
}
.chain-mid svg { width: 26px; height: 26px; stroke: var(--accent); fill: none; stroke-width: 1.2; }
.chain-cell .ctag { font-family: var(--ff-mono); font-size: 9.5px; letter-spacing: .16em; color: var(--muted-2); text-transform: uppercase; }
.chain-cell h4 { font-size: 15px; font-weight: 600; margin: 10px 0 10px; }
.chain-cell p { font-size: 12.5px; color: var(--muted); margin: 0; line-height: 1.75; }
.chain-cell.hl { background: var(--ink); color: #fff; }
.chain-cell.hl .ctag { color: rgba(255,255,255,.5); }
.chain-cell.hl p { color: rgba(255,255,255,.66); }

/* ---------- 深色 CTA ---------- */
.cta-band { background: var(--ink); color: #fff; padding: 76px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 50px; flex-wrap: wrap; }
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 600; margin: 12px 0 0; letter-spacing: -.01em; }
.cta-band p { color: rgba(255,255,255,.6); margin: 14px 0 0; max-width: 520px; font-size: 14px; }
.cta-band .eyebrow { color: var(--accent-2); }
.cta-band .eyebrow::before { background: var(--accent-2); }
.cta-band .btn { background: #fff; border-color: #fff; color: var(--ink); }
.cta-band .btn:hover { background: var(--accent-2); border-color: var(--accent-2); color: #fff; }
.cta-band .btn.ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.28); }
.cta-band .btn.ghost:hover { border-color: #fff; color: #fff; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); padding: 60px 0 26px; background: var(--surf); }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 44px; }
.foot-brand .brand-cn { font-size: 16px; }
.foot-brand p { font-size: 12.5px; color: var(--muted); margin: 16px 0 0; max-width: 300px; line-height: 1.8; }
.foot-col h5 {
  font-family: var(--ff-mono); font-size: 10px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--muted-2); margin: 0 0 16px; font-weight: 400;
}
.foot-col a, .foot-col span { display: block; font-size: 12.5px; color: var(--ink-2); margin-bottom: 10px; line-height: 1.7; }
.foot-col a:hover { color: var(--accent); }
.foot-bottom {
  margin-top: 46px; padding-top: 20px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font-size: 11.5px; color: var(--muted-2); font-family: var(--ff-mono); letter-spacing: .03em;
}
.foot-note { font-size: 11.5px; color: var(--muted-2); margin-top: 12px; line-height: 1.7; font-family: var(--ff); }

/* ---------- 产品详情弹层 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 200; display: none;
  background: rgba(12, 21, 23, .42); backdrop-filter: blur(3px);
  padding: 40px 20px; overflow-y: auto;
}
.modal.open { display: block; animation: fade .22s ease; }
@keyframes fade { from { opacity: 0 } to { opacity: 1 } }
.modal-card {
  max-width: 860px; margin: 0 auto; background: #fff; border: 1px solid var(--line);
  box-shadow: 0 40px 90px -40px rgba(0,0,0,.5); animation: rise .3s cubic-bezier(.2,.8,.2,1);
}
@keyframes rise { from { opacity: 0; transform: translateY(14px) } to { opacity: 1; transform: none } }
.modal-head {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 20px;
  padding: 26px 30px 22px; border-bottom: 1px solid var(--line);
}
.modal-head .pid { font-family: var(--ff-mono); font-size: 10px; letter-spacing: .1em; color: var(--accent); }
.modal-head h3 { font-size: 23px; font-weight: 600; margin: 8px 0 0; letter-spacing: -.01em; }
.modal-head .sub { font-size: 12.5px; color: var(--muted-2); margin: 6px 0 0; }
.modal-close {
  width: 34px; height: 34px; border: 1px solid var(--line); background: #fff; flex: 0 0 auto;
  display: grid; place-items: center; transition: all .2s;
}
.modal-close:hover { border-color: var(--ink); background: var(--ink); }
.modal-close svg { width: 13px; height: 13px; stroke: var(--ink); stroke-width: 1.6; }
.modal-close:hover svg { stroke: #fff; }
.modal-body { padding: 6px 30px 30px; }
.dl { display: grid; grid-template-columns: 120px 1fr; }
.dl dt, .dl dd {
  padding: 15px 0; margin: 0; border-bottom: 1px solid var(--line-2); font-size: 13px;
}
.dl dt { color: var(--muted); font-size: 12.5px; }
.dl dd { color: var(--ink-2); line-height: 1.75; }
.dl dd.mono { font-family: var(--ff-mono); font-size: 12px; }
.modal-foot {
  display: flex; align-items: center; gap: 12px; padding: 20px 30px;
  border-top: 1px solid var(--line); background: var(--surf); flex-wrap: wrap;
}
.modal-foot .hint { font-size: 11.5px; color: var(--muted-2); margin-left: auto; font-family: var(--ff-mono); }

/* ---------- 询价单 ---------- */
.cart-badge {
  display: inline-flex; align-items: center; gap: 6px; font-family: var(--ff-mono); font-size: 11px;
}
.cart-badge b {
  min-width: 18px; height: 18px; background: var(--accent); color: #fff;
  display: inline-grid; place-items: center; font-weight: 500; padding: 0 4px;
}
.rfq { border: 1px solid var(--line); background: #fff; }
.rfq-row {
  display: grid; grid-template-columns: 1fr 86px 120px 40px; gap: 16px; align-items: center;
  padding: 14px 20px; border-bottom: 1px solid var(--line-2);
}
.rfq-row:last-child { border-bottom: 0; }
.rfq-row .rid { font-family: var(--ff-mono); font-size: 11px; color: var(--accent); }
.rfq-row .rname { font-size: 13.5px; }
.rfq-row .rmeta { font-size: 11.5px; color: var(--muted-2); }
.rfq-row input {
  width: 100%; height: 32px; border: 1px solid var(--line); padding: 0 10px;
  font-family: var(--ff-mono); font-size: 12px; outline: none;
}
.rfq-row input:focus { border-color: var(--accent); }
.rfq-del {
  width: 30px; height: 30px; border: 1px solid var(--line); background: #fff;
  display: grid; place-items: center; color: var(--muted); font-size: 15px; line-height: 1;
}
.rfq-del:hover { border-color: #C0392B; color: #C0392B; }
.rfq-empty { padding: 46px 20px; text-align: center; color: var(--muted); font-size: 13px; }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 12px; color: var(--muted); letter-spacing: .04em; }
.field input, .field select, .field textarea {
  border: 1px solid var(--line); background: #fff; padding: 11px 13px;
  font-family: inherit; font-size: 13.5px; color: var(--ink); outline: none;
  transition: border-color .2s; width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); }
.field textarea { min-height: 110px; resize: vertical; }

/* ---------- 关于页 ---------- */
.page-head { padding: 74px 0 52px; border-bottom: 1px solid var(--line-2); }
.page-head h1 { font-size: clamp(28px, 3.6vw, 44px); font-weight: 600; letter-spacing: -.02em; margin: 16px 0 0; line-height: 1.3; }
.page-head p { color: var(--muted); max-width: 620px; margin: 18px 0 0; font-size: 14.5px; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: start; }
.prose p { color: var(--ink-2); font-size: 14px; line-height: 1.95; margin: 0 0 18px; }
.prose p:last-child { margin-bottom: 0; }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.value-item { background: #fff; padding: 30px 26px; }
.value-item .vno { font-family: var(--ff-mono); font-size: 10px; color: var(--accent); letter-spacing: .16em; }
.value-item h4 { font-size: 15px; font-weight: 600; margin: 14px 0 10px; }
.value-item p { font-size: 12.5px; color: var(--muted); margin: 0; line-height: 1.8; }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 70px; align-items: start; }
.contact-item { padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-item .clabel { font-family: var(--ff-mono); font-size: 10px; letter-spacing: .18em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 6px; }
.contact-item .cval { font-size: 15px; }
.contact-item .cval.mono { font-size: 14px; }
.contact-item .csub { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* ---------- 滚动动效 ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 提示条 ---------- */
.toast {
  position: fixed; left: 50%; bottom: 40px; transform: translate(-50%, 20px);
  background: var(--ink); color: #fff; padding: 12px 22px; font-size: 13px;
  z-index: 300; opacity: 0; pointer-events: none; transition: all .3s cubic-bezier(.2,.8,.2,1);
  border-left: 2px solid var(--accent-2);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .cat-card { flex-basis: calc(50% - 1px); }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; gap: 46px; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .chain-row { grid-template-columns: 1fr; }
  .chain-mid { border: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 12px 0; }
  .chain-mid svg { transform: rotate(90deg); }
  .two-col, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .app-grid, .value-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .wrap { padding: 0 20px; }
  .nav { height: 62px; gap: 12px; }
  .nav-links {
    position: fixed; top: 62px; left: 0; right: 0; background: #fff;
    flex-direction: column; align-items: flex-start; gap: 0; padding: 8px 20px 18px;
    border-bottom: 1px solid var(--line); display: none; box-shadow: 0 20px 30px -24px rgba(0,0,0,.4);
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--line-2); font-size: 14px; }
  .nav-toggle { display: flex; margin-left: auto; }
  .nav-cta .btn:not(.nav-toggle) { display: none; }
  .hero { padding: 56px 0 60px; }
  .section { padding: 60px 0; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 16px; margin-bottom: 30px; }
  .cat-card { flex-basis: 100%; min-height: auto; }
  .prod-grid { grid-template-columns: 1fr; }
  .toolbar { top: 62px; }
  .toolbar-inner { gap: 10px; }
  .search-box { width: 100%; margin-left: 0; }
  .search-box input { width: 100%; }
  .app-grid, .value-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-meta { gap: 26px; }
  .modal { padding: 16px 10px; }
  .modal-head, .modal-body, .modal-foot { padding-left: 20px; padding-right: 20px; }
  .dl { grid-template-columns: 1fr; }
  .dl dt { padding-bottom: 2px; border-bottom: 0; }
  .dl dd { padding-top: 0; }
  .form-grid { grid-template-columns: 1fr; }
  .rfq-row { grid-template-columns: 1fr 70px 40px; }
  .rfq-row .rmeta { display: none; }
  .cta-inner { gap: 26px; }
  .foot-bottom { flex-direction: column; gap: 8px; }
}

/* 非中文语言下品牌副标题（英文小字）与主名重复，隐藏 */
html[lang]:not([lang="zh-CN"]) .brand-en { display: none; }

/* ---------- 询盘提交结果 ---------- */
.hp { position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }
.rfq-result {
  margin-top:18px; padding:16px 18px; border-radius:10px;
  border:1px solid var(--line); background:var(--line-2); font-size:13px; line-height:1.7;
}
.rfq-result .rr-title { font-weight:700; font-size:14px; margin-bottom:6px; }
.rfq-result .rr-ref  { font-size:12px; color:var(--muted); margin-bottom:6px; }
.rfq-result .rr-body { color:var(--muted); }
.rfq-result.ok   { border-color:var(--accent); background:var(--accent-soft); }
.rfq-result.ok .rr-title { color:var(--accent); }
.rfq-result.warn { border-color:#E8B33C; background:#FDF6E4; }
.rfq-result.warn .rr-title { color:#9A6B00; }
.rfq-result.info { color:var(--muted); }
.btn.is-loading { opacity:.62; pointer-events:none; }
@media (max-width:600px){
  .rfq-result { padding:14px; }
}

/* ==========================================================
   静态产品页 /p/{型号}.html 与在线 TDS /tds/{型号}.html
   （结构与变量全部复用上面已有的，避免风格漂移）
   ========================================================== */

/* 中英双语文本：默认中文，切到 EN 时反过来 */
.v-en { display: none; }
html[lang="en"] .v-zh { display: none; }
html[lang="en"] .v-en { display: inline; }

/* 面包屑 */
.bc { padding: 14px 0 0; font-size: 12px; color: var(--muted); }
.bc a { color: var(--muted); border-bottom: 1px solid var(--line); }
.bc a:hover { color: var(--accent); border-color: var(--accent); }
.bc span { color: var(--muted-2); margin: 0 6px; }
.bc b { font-weight: 500; color: var(--ink-2); }

/* 主体两栏 */
.pt { display: grid; grid-template-columns: 1fr 300px; gap: 40px; padding: 40px 0 56px; align-items: start; }
.pt-sec { margin-bottom: 30px; }
.pt-sec h2 {
  font-size: 13px; font-weight: 700; letter-spacing: .1em; color: var(--accent);
  margin: 0 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--line);
}
.pt-sec h2 i { font-style: normal; font-weight: 400; color: var(--muted-2); letter-spacing: .06em; margin-left: 8px; font-size: 11px; }
.pt-sec p { margin: 0; font-size: 14px; line-height: 1.85; color: var(--ink-2); }
.pt-lead { font-size: 15px; line-height: 1.85; color: var(--ink-2); margin: 0 0 24px; }

/* 侧栏卡片 */
.pt-side { position: sticky; top: 84px; }
.pt-card { border: 1px solid var(--line); border-radius: 10px; padding: 20px; background: var(--surf); }
.pt-card + .pt-card { margin-top: 16px; }
.pt-card h3 { font-size: 12px; letter-spacing: .1em; color: var(--accent); margin: 0 0 12px; font-weight: 700; }
.pt-acts { display: flex; flex-direction: column; gap: 10px; }
.pt-acts .btn { justify-content: center; height: 40px; }
.pt-note { font-size: 11.5px; color: var(--muted); line-height: 1.7; margin: 12px 0 0; }
.pt-kv { font-size: 12.5px; color: var(--muted); line-height: 2; margin: 0; }
.pt-kv b { display: block; color: var(--ink-2); font-weight: 500; font-size: 13.5px; }

/* 相关型号 */
.pt-rel { border-top: 1px solid var(--line); padding: 36px 0 8px; }
.pt-rel h2 { font-size: 13px; letter-spacing: .1em; color: var(--accent); margin: 0 0 16px; font-weight: 700; }
.rel-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.rel-card { display: block; padding: 14px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.rel-card:hover { border-color: var(--accent); }
.rel-card .rid { font-family: var(--ff-mono); font-size: 12px; color: var(--accent); display: block; margin-bottom: 4px; }
.rel-card .rnm { font-size: 12.5px; color: var(--ink-2); line-height: 1.5; }

/* 在线 TDS 页面顶部工具条（打印时隐藏） */
.tds-bar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 12px 24px; background: var(--ink); color: #fff; font-size: 12.5px;
}
.tds-bar a { color: #fff; opacity: .78; }
.tds-bar a:hover { opacity: 1; }
.tds-bar .tb-id { font-family: var(--ff-mono); font-weight: 700; letter-spacing: .04em; }
.tds-bar .tb-sp { flex: 1; }
.tds-bar .tb-btn { border: 1px solid rgba(255,255,255,.35); border-radius: 6px; padding: 4px 10px; }
@media print { .tds-bar { display: none !important; } }

@media (max-width: 900px) {
  .pt { grid-template-columns: 1fr; gap: 28px; padding-top: 28px; }
  .pt-side { position: static; }
  .rel-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .rel-grid { grid-template-columns: 1fr; }
  .pt { padding: 22px 0 40px; }
}

/* ---------- 内容页：对比表与 FAQ ---------- */
.pt-sec table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.pt-sec table th, .pt-sec table td {
  border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; line-height: 1.7;
}
.pt-sec table th {
  background: var(--surf); font-size: 12.5px; font-weight: 700; color: var(--ink);
  letter-spacing: .02em; white-space: nowrap;
}
.pt-sec table td { color: var(--ink-2); }
.pt-sec table tbody tr:nth-child(even) { background: #FCFDFD; }
.pt-sec table td:first-child { font-weight: 500; color: var(--ink); white-space: nowrap; }

.faq { border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; background: #fff; }
.faq + .faq { margin-top: 10px; }
.faq h3 { font-size: 14px; font-weight: 600; color: var(--ink); margin: 0 0 6px; line-height: 1.6; }
.faq h3::before { content: "Q  "; color: var(--accent); font-weight: 700; font-family: var(--ff-mono); }
.faq p { margin: 0; font-size: 13.5px; line-height: 1.85; color: var(--ink-2); }
.faq p::before { content: "A  "; color: var(--muted-2); font-weight: 700; font-family: var(--ff-mono); }

@media (max-width: 600px) {
  .pt-sec table { font-size: 12.5px; }
  .pt-sec table th, .pt-sec table td { padding: 8px 9px; }
  .pt-sec table td:first-child, .pt-sec table th { white-space: normal; }
}

/* ---------- 卡片型号进产品页的链接 + 弹窗文字链 ---------- */
.prod a.pid { color: inherit; text-decoration: none; border-bottom: 1px solid transparent; }
.prod a.pid:hover { color: var(--accent); border-bottom-color: var(--accent); }
.m-link {
  font-size: 12.5px; color: var(--accent); margin-left: auto; align-self: center;
  border-bottom: 1px solid transparent; white-space: nowrap;
}
.m-link:hover { border-bottom-color: var(--accent); }
@media (max-width: 600px) {
  .m-link { margin-left: 0; }
}

/* ---------- 页脚备案号 ---------- */
.foot-icp { display: inline-flex; align-items: center; }
.foot-icp a { color: inherit; opacity: .85; border-bottom: 1px solid transparent; }
.foot-icp a:hover { opacity: 1; border-bottom-color: currentColor; }

/* ---------- 首页技术问答卡片 ---------- */
.qa-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.qa-card {
  display: flex; align-items: flex-start; padding: 18px 20px;
  border: 1px solid var(--line); border-radius: 10px; background: #fff;
  font-size: 14px; line-height: 1.7; color: var(--ink-2); position: relative;
  padding-right: 40px;
}
.qa-card::after {
  content: ""; position: absolute; right: 18px; top: 50%;
  width: 7px; height: 7px; border-top: 1.6px solid var(--muted-2);
  border-right: 1.6px solid var(--muted-2); transform: translateY(-50%) rotate(45deg);
}
.qa-card:hover { border-color: var(--accent); color: var(--accent); }
@media (max-width: 700px) { .qa-grid { grid-template-columns: 1fr; } }

/* ---------- 技术问答栏目页卡片 ---------- */
.qa-card.qa-wide { display: block; padding: 20px 46px 18px 20px; }
.qa-card.qa-wide b { display: block; font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 6px; line-height: 1.6; }
.qa-card.qa-wide:hover b { color: var(--accent); }
.qa-card .qa-desc { display: block; font-size: 13px; color: var(--muted); line-height: 1.75; }
.qa-card .qa-date { display: block; margin-top: 10px; font-size: 11px; color: var(--muted-2); font-family: var(--ff-mono); letter-spacing: .04em; }


/* ---------- 参考资料外链（E-E-A-T） ---------- */
.ref-list { list-style: none; margin: 0; padding: 0; }
.ref-list li { padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: 13.5px; line-height: 1.75; }
.ref-list li:last-child { border-bottom: none; }
.ref-list a { color: var(--accent); text-decoration: none; border-bottom: 1px solid currentColor; }
.ref-list a:hover { opacity: .8; }
.ref-list a::after { content: " ↗"; font-size: 11px; }