/* ============================================================
   滁州华要电器材料有限公司 — 双主题设计系统
   默认浅色（Light Precision）：纸白 / 墨黑 / 蓝图蓝 #0055B8 / 划线红
   深色（Dark Industrial）：钢黑 / 冷白 / 弧光蓝 #4D9FFF / 检验黄
   切换：html[data-theme="dark"] 覆盖变量；--amber 在浅色下取划线红
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* —— 浅色（默认）—— */
  --bg: #F7F7F4;
  --bg-raise: #FFFFFF;
  --surface: #FFFFFF;
  --surface-2: #FBFBF9;
  --seam: #D8D9D4;
  --seam-soft: #E7E8E3;
  --seam-strong: #16181D;
  --text: #16181D;
  --text-2: #4E555F;
  --text-3: #8B919B;
  --arc: #0055B8;
  --arc-hover: #0A66D0;
  --arc-dim: rgba(0, 85, 184, 0.07);
  --on-arc: #FFFFFF;
  --amber: #C8442A;            /* 浅色下的标注色 = 划线红 */
  --amber-hover: #D8543A;
  --amber-dim: rgba(200, 68, 42, 0.08);
  --on-amber: #FFFFFF;
  --green: #1D8A53;
  --nav-bg: rgba(247, 247, 244, 0.88);
  --footer-bg: #FFFFFF;
  --grid: rgba(22, 24, 29, 0.045);
  --glow: rgba(0, 85, 184, 0.05);
  --img-filter: grayscale(0.35) contrast(1.02);
  --img-filter-hover: grayscale(0);
  --tag-bg: rgba(247, 247, 244, 0.92);
  --overlay: rgba(22, 24, 29, 0.45);
  --watermark: rgba(22, 24, 29, 0.035);
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --sans: 'IBM Plex Sans SC', 'IBM Plex Sans', -apple-system, sans-serif;
  --maxw: 1240px;
  --nav-h: 68px;
  color-scheme: light;
}

html[data-theme="dark"] {
  /* —— 深色 —— */
  --bg: #0B0D10;
  --bg-raise: #111419;
  --surface: #14171C;
  --surface-2: #191D24;
  --seam: #272D36;
  --seam-soft: #1D222A;
  --seam-strong: #272D36;
  --text: #E9ECF1;
  --text-2: #98A1AF;
  --text-3: #5F6774;
  --arc: #4D9FFF;
  --arc-hover: #6FB2FF;
  --arc-dim: rgba(77, 159, 255, 0.14);
  --on-arc: #06090D;
  --amber: #E3B34A;            /* 深色下的标注色 = 检验黄 */
  --amber-hover: #F0C566;
  --amber-dim: rgba(227, 179, 74, 0.14);
  --on-amber: #0B0D10;
  --green: #3DBE7B;
  --nav-bg: rgba(11, 13, 16, 0.82);
  --footer-bg: #0B0D10;
  --grid: rgba(77, 159, 255, 0.045);
  --glow: rgba(77, 159, 255, 0.07);
  --img-filter: grayscale(1) contrast(1.08) brightness(0.86);
  --img-filter-hover: grayscale(0.15) brightness(0.95);
  --tag-bg: rgba(11, 13, 16, 0.88);
  --overlay: rgba(6, 8, 11, 0.8);
  --watermark: rgba(255, 255, 255, 0.025);
  color-scheme: dark;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

::selection { background: var(--arc); color: var(--on-arc); }

/* 图纸网格底纹 */
.blueprint {
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }

/* ===================== NAV ===================== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--seam-soft);
  display: flex; align-items: center;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 32px;
  width: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-right { display: flex; align-items: center; gap: 22px; }
.nav-logo { display: flex; align-items: center; gap: 12px; }
.nav-logo-mark {
  width: 36px; height: 36px; border: 1px solid var(--seam-strong);
  display: grid; place-items: center;
  font-weight: 700; font-size: 17px; color: var(--arc);
  background: var(--surface);
  position: relative;
}
.nav-logo-mark::after {
  content: ''; position: absolute; top: -1px; left: -1px;
  width: 7px; height: 7px;
  border-top: 1.5px solid var(--amber); border-left: 1.5px solid var(--amber);
}
.nav-logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.nav-logo-cn { font-size: 15px; font-weight: 600; letter-spacing: 0.04em; }
.nav-logo-en { font-family: var(--mono); font-size: 9px; color: var(--text-3); letter-spacing: 0.18em; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-links a {
  font-size: 14px; color: var(--text-2); letter-spacing: 0.03em;
  position: relative; padding: 4px 0; transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 1px; background: var(--arc);
}
.nav-cta {
  font-size: 13px; font-family: var(--mono); letter-spacing: 0.06em;
  color: var(--on-arc) !important; background: var(--arc);
  padding: 9px 20px; border: none;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--arc-hover); color: var(--on-arc); }

/* 主题切换按钮（太阳/月亮） */
.theme-toggle {
  width: 36px; height: 36px; flex-shrink: 0;
  border: 1px solid var(--seam); background: var(--surface);
  display: grid; place-items: center;
  color: var(--text-2);
  transition: border-color 0.2s, color 0.2s;
}
.theme-toggle:hover { border-color: var(--arc); color: var(--arc); }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .icon-moon { display: block; }
.theme-toggle .icon-sun { display: none; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
html[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

/* 移动端菜单 */
.nav-hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 8px; }
.nav-hamburger span { width: 22px; height: 1.5px; background: var(--text); transition: transform 0.25s, opacity 0.2s; }
.nav-hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
.mobile-menu {
  display: none; position: fixed; top: var(--nav-h); left: 0; right: 0; z-index: 99;
  background: var(--bg-raise); border-bottom: 1px solid var(--seam);
  padding: 12px 32px 24px; flex-direction: column; gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a { padding: 12px 0; font-size: 15px; color: var(--text-2); border-bottom: 1px solid var(--seam-soft); }
.mobile-menu a:last-of-type { border-bottom: none; }
.mobile-menu .m-cta { color: var(--arc); font-family: var(--mono); font-size: 14px; }

/* ===================== 章节骨架 ===================== */
.section { padding: 120px 0; position: relative; }
.section-alt { background: var(--bg-raise); border-top: 1px solid var(--seam-soft); border-bottom: 1px solid var(--seam-soft); transition: background-color 0.3s ease; }
.sec-head { margin-bottom: 64px; max-width: 720px; }
.sec-code {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.22em;
  color: var(--amber); display: flex; align-items: center; gap: 14px;
  margin-bottom: 20px; text-transform: uppercase;
}
.sec-code::before { content: ''; width: 32px; height: 1px; background: var(--amber); }
.sec-title {
  font-size: clamp(30px, 3.4vw, 46px); font-weight: 700;
  letter-spacing: -0.01em; line-height: 1.25; color: var(--text);
}
.sec-sub { margin-top: 18px; font-size: 16px; color: var(--text-2); line-height: 1.8; }

/* ===================== 图纸角标（签名元素）===================== */
.bracket { position: relative; }
.bracket::before, .bracket::after {
  content: ''; position: absolute; width: 14px; height: 14px;
  border-color: var(--amber); border-style: solid;
  opacity: 0; transition: opacity 0.25s;
  pointer-events: none;
}
.bracket::before { top: -1px; left: -1px; border-width: 1.5px 0 0 1.5px; }
.bracket::after { bottom: -1px; right: -1px; border-width: 0 1.5px 1.5px 0; }
.bracket:hover::before, .bracket:hover::after { opacity: 1; }
.bracket-on::before, .bracket-on::after { opacity: 1; }

/* 尺寸标注线 */
.dim-line {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 13px; color: var(--amber);
  letter-spacing: 0.08em; margin-top: 26px;
}
.dim-rule { position: relative; width: 180px; height: 1px; background: var(--amber); }
.dim-rule::before, .dim-rule::after {
  content: ''; position: absolute; top: 50%; width: 8px; height: 1px; background: var(--amber);
}
.dim-rule::before { left: 0; transform: rotate(45deg); transform-origin: left center; }
.dim-rule::after { right: 0; transform: rotate(-45deg); transform-origin: right center; }
.dim-rule i { position: absolute; top: -4px; width: 1px; height: 9px; background: var(--amber); }
.dim-rule i:first-child { left: 0; }
.dim-rule i:last-child { right: 0; }

/* ===================== HERO（首页）===================== */
.hero {
  padding: calc(var(--nav-h) + 96px) 0 96px;
  position: relative; overflow: hidden;
}
.hero::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 70% 10%, var(--glow), transparent 65%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 72px; align-items: center; position: relative; z-index: 1; }
.hero-eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.24em;
  color: var(--text-3); text-transform: uppercase; margin-bottom: 22px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em;
  color: var(--text-2); border: 1px solid var(--seam);
  padding: 7px 16px; margin-bottom: 30px; background: var(--surface);
}
.hero-badge-dot { width: 6px; height: 6px; background: var(--green); border-radius: 50%; animation: pulse 2.2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.3; } }
.hero-title {
  font-size: clamp(40px, 5.4vw, 74px); font-weight: 700;
  line-height: 1.14; letter-spacing: -0.015em;
}
.hero-title em { font-style: normal; color: var(--arc); }
.hero-desc { margin-top: 28px; font-size: 17px; color: var(--text-2); line-height: 1.85; max-width: 520px; }
.hero-actions { display: flex; gap: 16px; margin-top: 40px; flex-wrap: wrap; }

.btn { display: inline-flex; align-items: center; gap: 10px; font-size: 15px; padding: 14px 30px; border: 1px solid transparent; transition: background 0.2s, border-color 0.2s, color 0.2s; }
.btn-primary { background: var(--arc); color: var(--on-arc); font-weight: 500; }
.btn-primary:hover { background: var(--arc-hover); }
.btn-ghost { border-color: var(--seam-strong); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--arc); color: var(--arc); }
.btn-amber { background: var(--amber); color: var(--on-amber); font-weight: 500; }
.btn-amber:hover { background: var(--amber-hover); }

/* Hero 右侧：车间影像 + 数据读出 */
.hero-visual { position: relative; }
.hero-photo { position: relative; border: 1px solid var(--seam-strong); background: var(--surface); }
.hero-photo img { width: 100%; height: 340px; object-fit: cover; filter: var(--img-filter); transition: filter 0.5s; }
.hero-photo:hover img { filter: var(--img-filter-hover); }
.hero-photo-tag {
  position: absolute; bottom: 0; left: 0;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--text-2); background: var(--tag-bg);
  padding: 8px 14px; border-top: 1px solid var(--seam); border-right: 1px solid var(--seam);
}
.hero-readout {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--seam-strong); border-top: none; background: var(--surface);
}
.hero-readout .ro {
  padding: 20px 16px; border-right: 1px solid var(--seam-soft);
}
.hero-readout .ro:last-child { border-right: none; }
.ro-num { font-family: var(--mono); font-size: clamp(20px, 1.8vw, 26px); font-weight: 600; color: var(--text); }
.ro-num sub, .ro-num sup { font-size: 0.55em; color: var(--amber); }
.ro-label { font-size: 12px; color: var(--text-3); margin-top: 4px; letter-spacing: 0.04em; }

/* ===================== 能力卡片 ===================== */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--seam); border: 1px solid var(--seam); }
.cap-card {
  background: var(--surface); padding: 40px 34px;
  transition: background 0.25s; position: relative;
}
.cap-card:hover { background: var(--surface-2); }
.cap-idx { font-family: var(--mono); font-size: 11px; color: var(--text-3); letter-spacing: 0.16em; margin-bottom: 22px; }
.cap-card h3 { font-size: 19px; font-weight: 600; margin-bottom: 12px; }
.cap-card p { font-size: 14px; color: var(--text-2); line-height: 1.8; }
.cap-tags { display: flex; gap: 8px; margin-top: 22px; flex-wrap: wrap; }
.cap-tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em;
  color: var(--arc); background: var(--arc-dim);
  padding: 4px 10px;
}

/* ===================== 客户墙 ===================== */
.client-wall { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 1px; background: var(--seam); border: 1px solid var(--seam); }
.client-item {
  background: var(--bg); padding: 34px 12px; text-align: center;
  font-size: 17px; font-weight: 500; color: var(--text-2);
  letter-spacing: 0.14em; transition: color 0.2s, background 0.25s;
}
.client-item:hover { color: var(--text); background: var(--surface-2); }

/* ===================== 招聘横幅 ===================== */
.jobs-banner {
  border: 1px solid var(--seam-strong); background:
    linear-gradient(120deg, var(--arc-dim), transparent 55%),
    var(--surface);
  padding: 72px 64px; position: relative; overflow: hidden;
}
.jobs-banner::before {
  content: 'HY-RECRUIT'; position: absolute; right: -18px; bottom: -34px;
  font-family: var(--mono); font-size: 110px; font-weight: 600;
  color: var(--watermark); letter-spacing: 0.05em; pointer-events: none;
}
.jobs-banner-eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: 0.22em; color: var(--amber); margin-bottom: 18px; text-transform: uppercase; }
.jobs-banner-title { font-size: clamp(26px, 3vw, 40px); font-weight: 700; line-height: 1.3; max-width: 560px; }
.jobs-banner p { margin-top: 16px; color: var(--text-2); max-width: 520px; }
.jobs-banner .btn { margin-top: 34px; }

/* ===================== 页脚 ===================== */
.footer { border-top: 1px solid var(--seam-soft); background: var(--footer-bg); padding: 80px 0 0; transition: background-color 0.3s ease; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.7fr 0.7fr 1fr; gap: 48px; padding-bottom: 64px; }
.footer-brand .nav-logo { margin-bottom: 20px; }
.footer-brand p { font-size: 14px; color: var(--text-2); line-height: 1.85; max-width: 320px; }
.footer h4 { font-family: var(--mono); font-size: 12px; letter-spacing: 0.2em; color: var(--text-3); text-transform: uppercase; margin-bottom: 22px; font-weight: 500; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { font-size: 14px; color: var(--text-2); transition: color 0.2s; }
.footer-links a:hover { color: var(--arc); }
.footer-contact li { display: flex; gap: 10px; font-size: 14px; color: var(--text-2); margin-bottom: 14px; line-height: 1.6; }
.footer-contact .fc-key { font-family: var(--mono); font-size: 12px; color: var(--text-3); min-width: 40px; padding-top: 2px; }
.footer-bottom {
  border-top: 1px solid var(--seam-soft); padding: 24px 0;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.05em; color: var(--text-3);
}

/* ===================== 内页 HERO ===================== */
.page-hero { padding: calc(var(--nav-h) + 88px) 0 80px; border-bottom: 1px solid var(--seam-soft); position: relative; overflow: hidden; }
.page-hero::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 80% at 85% 0%, var(--glow), transparent 60%);
  pointer-events: none;
}
.page-hero-inner { position: relative; z-index: 1; max-width: 780px; }
.page-hero-title { font-size: clamp(34px, 4.4vw, 60px); font-weight: 700; line-height: 1.2; letter-spacing: -0.01em; }
.page-hero-title em { font-style: normal; color: var(--arc); }
.page-hero-sub { margin-top: 22px; font-size: 16.5px; color: var(--text-2); line-height: 1.85; }

/* ===================== 关于页 ===================== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.about-photo { border: 1px solid var(--seam-strong); position: relative; background: var(--surface); }
.about-photo img { width: 100%; height: 100%; min-height: 380px; object-fit: cover; filter: var(--img-filter); transition: filter 0.5s; }
.about-photo:hover img { filter: var(--img-filter-hover); }
.about-body p { font-size: 15.5px; color: var(--text-2); line-height: 1.95; margin-bottom: 18px; }
.about-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--seam); border: 1px solid var(--seam); margin-top: 34px; }
.about-stats .ro { background: var(--surface); padding: 24px; }

/* 发展历程 */
.timeline-phase { margin-bottom: 56px; }
.timeline-phase-label {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.2em;
  color: var(--arc); margin-bottom: 28px; display: flex; align-items: center; gap: 16px;
}
.timeline-phase-label::after { content: ''; flex: 1; height: 1px; background: var(--seam); }
.timeline { border-left: 1px solid var(--seam); margin-left: 6px; }
.tl-item { position: relative; padding: 0 0 44px 42px; }
.tl-item:last-child { padding-bottom: 8px; }
.tl-item::before {
  content: ''; position: absolute; left: -5px; top: 8px;
  width: 9px; height: 9px; background: var(--bg);
  border: 1.5px solid var(--amber); transform: rotate(45deg);
}
.tl-year { font-family: var(--mono); font-size: 15px; color: var(--amber); letter-spacing: 0.1em; margin-bottom: 8px; }
.tl-item h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.tl-item p { font-size: 14.5px; color: var(--text-2); line-height: 1.8; max-width: 640px; }

/* 工厂环境 */
.factory-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; margin-bottom: 28px; }
.factory-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.factory-card { border: 1px solid var(--seam); background: var(--surface); overflow: hidden; }
.factory-card img { width: 100%; height: 260px; object-fit: cover; filter: var(--img-filter); transition: filter 0.5s, transform 0.5s; }
.factory-card:hover img { filter: var(--img-filter-hover); transform: scale(1.02); }
.factory-card-body { padding: 22px 24px; border-top: 1px solid var(--seam-soft); }
.factory-card h3 { font-size: 16.5px; font-weight: 600; margin-bottom: 8px; }
.factory-card p { font-size: 13.5px; color: var(--text-2); line-height: 1.75; }

/* 资质证书 */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.cert-card { border: 1px solid var(--seam); background: var(--surface); }
.cert-card img { width: 100%; height: 300px; object-fit: contain; background: #FFFFFF; padding: 18px; }
.cert-card-body { padding: 20px 22px; border-top: 1px solid var(--seam-soft); }
.cert-card h3 { font-size: 15.5px; font-weight: 600; margin-bottom: 6px; }
.cert-card p { font-size: 13px; color: var(--text-2); line-height: 1.7; }

/* ===================== 产品页 ===================== */
.product-block { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; margin-bottom: 100px; }
.product-block:last-child { margin-bottom: 0; }
.product-block.flip .product-photo { order: 2; }
.product-photo { border: 1px solid var(--seam-strong); position: relative; background: var(--surface); }
.product-photo img { width: 100%; height: 400px; object-fit: cover; filter: var(--img-filter); transition: filter 0.5s; }
.product-photo:hover img { filter: var(--img-filter-hover); }
.spec-list { margin-top: 30px; border-top: 1px solid var(--seam); }
.spec-row { display: grid; grid-template-columns: 120px 1fr; gap: 20px; padding: 16px 0; border-bottom: 1px solid var(--seam-soft); }
.spec-key { font-family: var(--mono); font-size: 13px; color: var(--amber); letter-spacing: 0.06em; padding-top: 2px; }
.spec-val { font-size: 14.5px; color: var(--text-2); line-height: 1.75; }

/* 生产流程 */
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--seam); border: 1px solid var(--seam); }
.process-step { background: var(--surface); padding: 36px 32px; position: relative; transition: background 0.25s; }
.process-step:hover { background: var(--surface-2); }
.process-num { font-family: var(--mono); font-size: 30px; font-weight: 600; color: var(--arc); margin-bottom: 18px; }
.process-num::after { content: ''; display: block; width: 28px; height: 1px; background: var(--seam); margin-top: 14px; }
.process-step h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.process-step p { font-size: 13.5px; color: var(--text-2); line-height: 1.75; }

/* 品质三卡 */
.qc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.qc-card { border: 1px solid var(--seam); background: var(--surface); padding: 40px 34px; transition: border-color 0.25s; }
.qc-card:hover { border-color: var(--arc); }
.qc-idx { font-family: var(--mono); font-size: 12px; letter-spacing: 0.2em; color: var(--amber); margin-bottom: 20px; }
.qc-card h3 { font-size: 19px; font-weight: 600; margin-bottom: 12px; }
.qc-card p { font-size: 14px; color: var(--text-2); line-height: 1.85; }

/* ===================== 招聘页 ===================== */
.why-grid, .benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.why-card { border: 1px solid var(--seam); background: var(--surface); padding: 38px 32px; transition: border-color 0.25s; }
.why-card:hover { border-color: var(--arc); }
.why-card h3 { font-size: 18px; font-weight: 600; margin: 18px 0 10px; }
.why-card p { font-size: 14px; color: var(--text-2); line-height: 1.85; }
.why-icon { width: 42px; height: 42px; border: 1px solid var(--seam); display: grid; place-items: center; font-family: var(--mono); font-size: 14px; color: var(--amber); }

/* 岗位卡片 */
.job-card { border: 1px solid var(--seam); background: var(--surface); margin-bottom: 20px; transition: border-color 0.25s; }
.job-card:hover { border-color: var(--arc); }
.job-card.closed:hover { border-color: var(--seam); }
.job-head { padding: 28px 32px; display: flex; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; flex-wrap: wrap; }
.job-title-wrap { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.job-head h3 { font-size: 19px; font-weight: 600; }
.job-meta { display: flex; gap: 10px; flex-wrap: wrap; }
.job-tag { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.05em; padding: 4px 12px; color: var(--text-2); border: 1px solid var(--seam); }
.job-tag.open-tag { color: var(--green); border-color: color-mix(in srgb, var(--green) 40%, transparent); background: color-mix(in srgb, var(--green) 9%, transparent); }
.job-tag.full-tag { color: var(--text-3); }
.job-salary { font-family: var(--mono); font-size: 14px; color: var(--amber); }
.job-arrow { font-family: var(--mono); color: var(--text-3); transition: transform 0.25s; }
.job-card.open .job-arrow { transform: rotate(90deg); color: var(--arc); }
.job-body { display: none; padding: 0 32px 36px; border-top: 1px solid var(--seam-soft); }
.job-card.open .job-body { display: block; }
.job-body h4 { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.18em; color: var(--amber); margin: 30px 0 14px; text-transform: uppercase; }
.job-body p { font-size: 14.5px; color: var(--text-2); line-height: 1.85; margin-top: 24px; }
.job-body ul li {
  font-size: 14.5px; color: var(--text-2); line-height: 1.85;
  padding-left: 20px; position: relative; margin-bottom: 8px;
}
.job-body ul li::before { content: '—'; position: absolute; left: 0; color: var(--text-3); font-family: var(--mono); }
.job-closed-note {
  margin-top: 30px; padding: 16px 20px; border: 1px dashed var(--seam);
  font-family: var(--mono); font-size: 13px; color: var(--text-3); letter-spacing: 0.04em;
}
.job-body .btn { margin-top: 30px; }

/* 投递弹窗 */
.modal {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: var(--overlay); backdrop-filter: blur(4px);
  align-items: center; justify-content: center; padding: 24px;
}
.modal.open { display: flex; }
.modal-box {
  background: var(--bg-raise); border: 1px solid var(--seam);
  max-width: 480px; width: 100%; padding: 44px 40px; position: relative;
}
.modal-box::before {
  content: ''; position: absolute; top: -1px; left: -1px;
  width: 16px; height: 16px; border-top: 1.5px solid var(--amber); border-left: 1.5px solid var(--amber);
}
.modal-close { position: absolute; top: 16px; right: 16px; background: none; border: none; color: var(--text-3); font-size: 20px; line-height: 1; padding: 8px; transition: color 0.2s; }
.modal-close:hover { color: var(--text); }
.modal-box h3 { font-size: 21px; font-weight: 700; margin-bottom: 6px; }
.modal-job { font-family: var(--mono); font-size: 13px; color: var(--arc); margin-bottom: 28px; }

/* ===================== 表单 ===================== */
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 13.5px; color: var(--text-2); margin-bottom: 8px; }
.field label em { font-style: normal; color: var(--amber); }
.field input, .field textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--seam);
  color: var(--text); font-family: inherit; font-size: 14.5px;
  padding: 13px 16px; transition: border-color 0.2s;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--arc); }
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); }
.form-note { font-family: var(--mono); font-size: 12px; color: var(--text-3); margin-top: 16px; letter-spacing: 0.03em; }

/* ===================== 联系页 ===================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 34px; }
.contact-card { border: 1px solid var(--seam); background: var(--surface); padding: 26px 24px; transition: border-color 0.25s; }
.contact-card:hover { border-color: var(--arc); }
.contact-card .cc-key { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.18em; color: var(--amber); margin-bottom: 14px; text-transform: uppercase; }
.contact-card .cc-val { font-size: 17px; font-weight: 600; line-height: 1.5; word-break: break-all; }
.contact-card .cc-note { font-size: 12.5px; color: var(--text-3); margin-top: 8px; line-height: 1.6; }
.map-placeholder {
  margin-top: 28px; border: 1px dashed var(--seam); padding: 44px 24px;
  text-align: center; font-family: var(--mono); font-size: 13px; color: var(--text-3); letter-spacing: 0.05em;
}
.contact-form { border: 1px solid var(--seam); background: var(--surface); padding: 44px 40px; }
.contact-form h2 { font-size: 22px; font-weight: 700; margin-bottom: 8px; }
.contact-form > p { font-size: 14px; color: var(--text-2); margin-bottom: 30px; }
.form-success { display: none; text-align: center; padding: 40px 0; }
.form-success.show { display: block; }
.form-success .fs-mark { font-family: var(--mono); font-size: 30px; color: var(--green); margin-bottom: 18px; }
.form-success h3 { font-size: 19px; margin-bottom: 10px; }
.form-success p { font-size: 14px; color: var(--text-2); line-height: 1.8; }

/* ===================== 入场动画 ===================== */
.fade-up { opacity: 0; transform: translateY(22px); transition: opacity 0.7s cubic-bezier(0.2, 0.6, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.6, 0.2, 1); }
.fade-up.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .fade-up { opacity: 1; transform: none; transition: none; }
  .hero-badge-dot { animation: none; }
  * { transition-duration: 0.01ms !important; }
}

/* 可见焦点 */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--arc); outline-offset: 2px;
}

/* ===================== 响应式 ===================== */
@media (max-width: 1024px) {
  .hero-grid, .about-grid, .product-block, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .product-block.flip .product-photo { order: 0; }
  .cap-grid, .process-grid, .qc-grid, .why-grid, .benefit-grid, .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .factory-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .container, .nav-inner { padding: 0 20px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-right { gap: 12px; }
  .section { padding: 80px 0; }
  .cap-grid, .process-grid, .qc-grid, .why-grid, .benefit-grid, .cert-grid,
  .factory-grid, .factory-grid.cols-3, .contact-cards, .about-stats { grid-template-columns: 1fr; }
  .hero-readout { grid-template-columns: repeat(2, 1fr); }
  .hero-readout .ro:nth-child(2n) { border-right: none; }
  .hero-readout .ro:nth-child(-n+2) { border-bottom: 1px solid var(--seam-soft); }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .jobs-banner { padding: 48px 28px; }
  .job-head { padding: 22px 20px; }
  .job-body { padding: 0 20px 30px; }
  .modal-box, .contact-form { padding: 32px 24px; }
  .dim-rule { width: 110px; }
}