/* ============================================================
   佛山市顺盛旺不锈钢有限公司 官网
   设计系统 · 纯静态 · 无编译依赖
   Palette: 深钢蓝 #1B3A5C / 银灰 #8C97A3 / 安全橙 #F58220
   ============================================================ */

/* ---------- 字体（自托管拉丁子集，中文走系统栈） ---------- */
@font-face {
  font-family: "Chakra Petch";
  src: url("../fonts/chakra-petch-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Chakra Petch";
  src: url("../fonts/chakra-petch-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Chakra Petch";
  src: url("../fonts/chakra-petch-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- 设计令牌 ---------- */
:root {
  --steel-950: #0C1A28;
  --steel-900: #10202F;
  --steel-850: #142A40;
  --steel-800: #1B3A5C;
  --steel-700: #24466B;
  --steel-600: #33587F;
  --silver: #8C97A3;
  --silver-300: #C4CCD5;
  --mist: #F2F4F7;
  --mist-100: #EAEEF3;
  --line: #D9DFE7;
  --ink: #1B2836;
  --body-c: #42505E;
  --muted: #71808F;
  --accent: #F58220;
  --accent-600: #E0730F;
  --accent-050: #FDF1E4;
  --white: #FFFFFF;

  --font-disp: "Chakra Petch", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;

  --wrap: 1200px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-1: 0 1px 2px rgba(20, 42, 64, .06), 0 8px 24px rgba(20, 42, 64, .08);
  --shadow-2: 0 2px 6px rgba(20, 42, 64, .10), 0 18px 44px rgba(20, 42, 64, .16);
  --header-h: 76px;
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--body-c);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--steel-700); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent-600); }
h1, h2, h3, h4 { color: var(--ink); font-weight: 700; line-height: 1.3; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
::selection { background: rgba(245, 130, 32, .28); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 200;
  background: var(--steel-900); color: #fff; padding: 10px 18px; border-radius: var(--radius-sm);
  font-size: 14px; transition: top .2s;
}
.skip-link:focus { top: 12px; color: #fff; }

.container { width: min(var(--wrap), calc(100% - 48px)); margin-inline: auto; }
.section { padding: clamp(64px, 9vw, 108px) 0; }
.section--mist { background: var(--mist); }
.section--dark { background: var(--steel-900); }
.section--tight { padding: clamp(48px, 6vw, 72px) 0; }

/* ---------- 标题体系（含尺寸线装饰） ---------- */
.section-head { max-width: 640px; margin-bottom: clamp(36px, 5vw, 56px); }
.section-head--center { margin-inline: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-disp); font-size: 12.5px; font-weight: 600;
  letter-spacing: .22em; text-transform: uppercase; color: var(--steel-600);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: ""; width: 36px; height: 9px; flex: none;
  background:
    linear-gradient(currentColor, currentColor) left center / 36px 1px,
    linear-gradient(currentColor, currentColor) left center / 1px 9px,
    linear-gradient(currentColor, currentColor) right center / 1px 9px;
  background-repeat: no-repeat;
}
.section--dark .eyebrow { color: var(--silver-300); }
.section-title { font-size: clamp(26px, 3.4vw, 34px); letter-spacing: .01em; }
.section-sub { font-size: 16px; color: var(--muted); margin: 10px 0 0; }
.section--dark .section-title { color: #F4F7FA; }
.section--dark .section-sub { color: var(--silver-300); }

.dim-rule {
  height: 9px; margin-top: 22px;
  background:
    linear-gradient(var(--line), var(--line)) left center / calc(100% - 48px) 1px,
    linear-gradient(var(--line), var(--line)) left center / 1px 9px,
    linear-gradient(var(--line), var(--line)) right center / 1px 9px;
  background-repeat: no-repeat;
}

/* ---------- 按钮 / 徽标 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 28px; border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 15.5px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; line-height: 1.3;
  transition: background .2s, color .2s, border-color .2s, box-shadow .2s, transform .2s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 6px 18px rgba(245, 130, 32, .35); }
.btn-primary:hover { background: var(--accent-600); color: #fff; }
.btn-ghost { border-color: rgba(196, 204, 213, .45); color: #EDF1F6; }
.btn-ghost:hover { border-color: var(--silver-300); background: rgba(255, 255, 255, .06); color: #fff; }
.btn-dark { background: var(--steel-800); color: #fff; }
.btn-dark:hover { background: var(--steel-700); color: #fff; }
.btn-outline { border-color: var(--steel-700); color: var(--steel-700); }
.btn-outline:hover { background: var(--steel-800); color: #fff; }
.btn-light { background: #fff; color: var(--steel-850); }
.btn-light:hover { background: var(--mist); color: var(--steel-800); }
.btn-sm { padding: 9px 20px; font-size: 14px; }
.btn .arr { transition: transform .2s; }
.btn:hover .arr { transform: translateX(3px); }

.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px;
  border: 1px solid rgba(196, 204, 213, .38);
  color: #C4CCD5; font-size: 13.5px; letter-spacing: .04em;
}
.chip b { font-family: var(--font-disp); font-weight: 600; font-size: 12.5px; letter-spacing: .08em; }

.badge {
  display: inline-block; padding: 4px 10px; border-radius: 4px;
  background: var(--mist); border: 1px solid var(--line);
  font-family: var(--font-disp); font-size: 12.5px; font-weight: 600;
  letter-spacing: .06em; color: var(--steel-700);
}
.badge--accent { background: var(--accent-050); border-color: rgba(245, 130, 32, .35); color: var(--accent-600); }

/* ---------- 页头导航 ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  color: #fff;
  border-bottom: 1px solid transparent;
  transition: background .25s, border-color .25s, box-shadow .25s;
}
.site-header.scrolled {
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--line);
  box-shadow: 0 4px 20px rgba(20, 42, 64, .08);
  color: var(--ink);
}
.header-inner { display: flex; align-items: center; gap: 28px; }

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand-mark { width: 42px; height: 42px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 20px; font-weight: 700; letter-spacing: .12em; color: #fff; }
.brand-sub {
  font-family: var(--font-disp); font-size: 9px; font-weight: 600;
  letter-spacing: .2em; color: var(--silver-300);
}
.site-header.scrolled .brand-name { color: var(--ink); }
.site-header.scrolled .brand-sub { color: var(--silver); }

.nav { margin-left: auto; }
.nav-list { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-link {
  position: relative; display: block; padding: 10px 14px;
  font-size: 15px; font-weight: 500; color: #EDF1F6;
}
.nav-link:hover { color: #fff; }
.nav-link[aria-current="page"]::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 2px;
  background: var(--accent); border-radius: 1px;
}
.site-header.scrolled .nav-link { color: var(--body-c); }
.site-header.scrolled .nav-link:hover { color: var(--steel-800); }
.site-header.scrolled .nav-link[aria-current="page"] { color: var(--steel-800); font-weight: 600; }

.nav-actions { display: flex; align-items: center; gap: 16px; flex: none; }
.lang-switch {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-disp); font-size: 12.5px; font-weight: 600; letter-spacing: .08em;
  color: var(--silver-300);
}
.lang-switch a { color: inherit; padding: 3px 2px; }
.lang-switch a.on { color: var(--accent); }
.lang-switch a:hover { color: #fff; }
.site-header.scrolled .lang-switch a:hover { color: var(--steel-800); }
.lang-switch span { opacity: .45; }

.nav-toggle {
  display: none; width: 44px; height: 44px; margin-left: auto;
  background: none; border: 0; cursor: pointer; color: inherit;
}
.nav-toggle svg { margin: auto; }

.mobile-panel {
  position: fixed; inset: var(--header-h) 0 auto 0; z-index: 99;
  background: var(--steel-950);
  border-bottom: 1px solid rgba(196, 204, 213, .15);
  padding: 10px 24px 26px;
  display: none;
}
.mobile-panel.open { display: block; }
.mobile-panel a {
  display: block; padding: 14px 4px; font-size: 16px; font-weight: 500;
  color: #EDF1F6; border-bottom: 1px solid rgba(196, 204, 213, .12);
}
.mobile-panel a[aria-current="page"] { color: var(--accent); }
.mobile-panel .lang-switch { padding: 16px 4px 6px; }
.mobile-panel .btn { margin-top: 14px; width: 100%; }

/* ---------- 深色图纸网格背景 ---------- */
.bg-blueprint {
  background:
    radial-gradient(1100px 520px at 78% -10%, rgba(51, 88, 127, .38), transparent 60%),
    radial-gradient(700px 420px at 8% 110%, rgba(27, 58, 92, .5), transparent 65%),
    linear-gradient(rgba(140, 151, 163, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 151, 163, .055) 1px, transparent 1px),
    var(--steel-950);
  background-size: auto, auto, 48px 48px, 48px 48px, auto;
}

/* ---------- 首页 Hero ---------- */
.hero { position: relative; color: #EDF1F6; }
.hero-inner {
  min-height: min(88vh, 780px);
  display: grid; grid-template-columns: 1.02fr .98fr; align-items: center;
  gap: clamp(32px, 5vw, 64px);
  padding: calc(var(--header-h) + 56px) 0 72px;
}
.hero-eyebrow {
  font-family: var(--font-disp); font-size: 13px; font-weight: 600;
  letter-spacing: .26em; color: var(--accent); margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(36px, 5vw, 58px); line-height: 1.16; letter-spacing: .01em;
  color: #F4F7FA; margin-bottom: 22px; font-weight: 700;
}
.hero-title em {
  font-style: normal; color: var(--accent);
  border-bottom: 3px solid rgba(245, 130, 32, .35); padding-bottom: 2px;
}
.hero-sub { font-size: 17px; line-height: 1.95; color: #B9C4D0; max-width: 36em; margin-bottom: 34px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 36px; }
.hero-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-art { position: relative; }
.hero-art svg { width: 100%; height: auto; }

/* 主视觉描线动画 */
.hero-art .draw {
  stroke-dasharray: var(--len, 900);
  stroke-dashoffset: var(--len, 900);
}
.hero-art .lbl { opacity: 0; }
@media (prefers-reduced-motion: no-preference) {
  .hero-copy > * { opacity: 0; animation: riseIn .8s cubic-bezier(.2, .7, .2, 1) forwards; }
  .hero-copy > *:nth-child(1) { animation-delay: .05s; }
  .hero-copy > *:nth-child(2) { animation-delay: .15s; }
  .hero-copy > *:nth-child(3) { animation-delay: .25s; }
  .hero-copy > *:nth-child(4) { animation-delay: .35s; }
  .hero-copy > *:nth-child(5) { animation-delay: .45s; }
  @keyframes riseIn { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }

  .hero-art .draw { animation: drawIn 1.6s cubic-bezier(.3, .6, .2, 1) forwards; }
  .hero-art .d1 { animation-delay: .2s; }
  .hero-art .d2 { animation-delay: .45s; }
  .hero-art .d3 { animation-delay: .7s; }
  .hero-art .d4 { animation-delay: .95s; }
  @keyframes drawIn { to { stroke-dashoffset: 0; } }
  .hero-art .lbl { animation: lblIn .7s ease forwards; }
  .hero-art .l1 { animation-delay: 1.15s; }
  .hero-art .l2 { animation-delay: 1.3s; }
  .hero-art .l3 { animation-delay: 1.45s; }
  .hero-art .l4 { animation-delay: 1.6s; }
  @keyframes lblIn { to { opacity: 1; } }
}

/* ---------- 产地带 ---------- */
.origin-bar { background: var(--steel-900); border-top: 1px solid rgba(196, 204, 213, .12); }
.origin-inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 14px 0; padding: 18px 0;
}
.origin-item {
  display: flex; align-items: center; gap: 10px;
  padding: 0 26px; font-size: 14px; color: var(--silver-300); letter-spacing: .04em;
}
.origin-item + .origin-item { border-left: 1px solid rgba(196, 204, 213, .16); }
.origin-item b { font-family: var(--font-disp); font-weight: 600; color: #EDF1F6; }

/* ---------- 数据标牌 ---------- */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.stat-plate {
  position: relative; background: var(--white);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px 24px; box-shadow: var(--shadow-1);
}
.stat-plate::before, .stat-plate::after {
  content: ""; position: absolute; top: 12px; width: 7px; height: 7px;
  border-radius: 50%; border: 1.5px solid var(--silver);
}
.stat-plate::before { left: 12px; }
.stat-plate::after { right: 12px; }
.stat-num {
  font-family: var(--font-disp); font-weight: 700;
  font-size: clamp(34px, 3.4vw, 42px); color: var(--steel-800); line-height: 1.1;
}
.stat-num small { font-size: .45em; font-weight: 600; color: var(--silver); margin-left: 4px; letter-spacing: .04em; }
.stat-label { margin-top: 8px; font-size: 13.5px; color: var(--muted); }

/* ---------- 核心业务卡 ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.biz-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 30px; transition: transform .25s, box-shadow .25s, border-color .25s;
}
.biz-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-2); border-color: var(--silver-300); }
.icon-tile {
  width: 52px; height: 52px; border-radius: 9px; flex: none;
  display: flex; align-items: center; justify-content: center;
  background: #EAF0F6; color: var(--steel-600); margin-bottom: 20px;
}
.icon-tile svg { width: 26px; height: 26px; }
.biz-card h3 { font-size: 19px; margin-bottom: 10px; }
.biz-card p { font-size: 14.5px; line-height: 1.9; margin: 0; }
.biz-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }

/* ---------- 产品卡（金属占位视觉） ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.prod-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.prod-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-2); border-color: var(--silver-300); }
.prod-card:hover .prod-title { color: var(--steel-700); }
.prod-art {
  position: relative; height: 180px; overflow: hidden;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .07) 0 1px, transparent 1px 4px),
    linear-gradient(120deg, #E3E8EE 0%, #B7C1CC 38%, #EDF1F5 55%, #A9B4C0 100%);
}
.prod-art--coil {
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .07) 0 1px, transparent 1px 4px),
    radial-gradient(circle at 30% 45%, #F0F3F6 0 14%, transparent 40%),
    linear-gradient(120deg, #C6CFD9, #9FA9B5 55%, #D6DDE4);
}
.prod-art--sheet {
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, .09) 0 1px, transparent 1px 7px),
    linear-gradient(160deg, #E8ECF1, #B0BAC5 60%, #D9E0E6);
}
.prod-art--deco {
  background:
    repeating-linear-gradient(115deg, rgba(255, 255, 255, .12) 0 2px, transparent 2px 8px),
    linear-gradient(60deg, #AEB9C4, #E7EBEF 50%, #99A5B1);
}
.prod-art--pipe {
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .08) 0 2px, transparent 2px 22px),
    linear-gradient(20deg, #D5DCE3, #A6B0BC 70%);
}
.prod-art > svg {
  position: absolute; right: -12px; bottom: -14px; width: 130px; height: 130px;
  color: var(--steel-800); opacity: .2;
}
.prod-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.prod-title { font-size: 17px; margin-bottom: 8px; transition: color .2s; }
.prod-desc { font-size: 13.5px; color: var(--muted); line-height: 1.75; margin: 0 0 14px; flex: 1; }
.prod-spec {
  font-family: var(--font-disp); font-size: 11.5px; font-weight: 500;
  letter-spacing: .05em; color: var(--silver);
  border-top: 1px dashed var(--line); padding-top: 12px;
}

/* ---------- 加工工艺网格 ---------- */
.proc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.proc-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; text-align: center;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.proc-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-1); border-color: var(--silver-300); }
.proc-card svg { width: 34px; height: 34px; color: var(--steel-600); margin: 0 auto 14px; }
.proc-card h3 { font-size: 16px; margin-bottom: 6px; }
.proc-card p { font-size: 13px; color: var(--muted); line-height: 1.7; margin: 0; }

/* ---------- 服务流程（真实时序，编号成立） ---------- */
.flow { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; counter-reset: step; }
.flow-step { position: relative; padding-top: 26px; }
.flow-step::before {
  content: ""; position: absolute; top: 19px; left: 0; right: 0; height: 1px;
  background: var(--line);
}
.flow-step::after {
  content: ""; position: absolute; top: 16px; left: 0; width: 7px; height: 7px;
  background: var(--white); border: 1.5px solid var(--silver); border-radius: 50%;
}
.flow-step:first-child::after { border-color: var(--accent); background: var(--accent); }
.flow-num {
  font-family: var(--font-disp); font-weight: 700; font-size: 13px;
  color: var(--steel-600); letter-spacing: .1em; display: block; margin-bottom: 8px;
}
.flow-step h3 { font-size: 16.5px; margin-bottom: 6px; }
.flow-step p { font-size: 13px; color: var(--muted); line-height: 1.7; margin: 0; }

/* ---------- 为什么选我们 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.why-card {
  display: flex; gap: 18px; background: var(--white);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
}
.why-card svg { width: 28px; height: 28px; color: var(--steel-600); flex: none; margin-top: 3px; }
.why-card h3 { font-size: 17px; margin-bottom: 6px; }
.why-card p { font-size: 14px; color: var(--muted); line-height: 1.8; margin: 0; }

/* ---------- 关于横幅（dark） ---------- */
.about-band { color: var(--silver-300); }
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(36px, 5vw, 72px); align-items: center; }
.about-band .section-sub { margin-bottom: 26px; }
.motto-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.motto {
  background: rgba(12, 26, 40, .55); border: 1px solid rgba(196, 204, 213, .14);
  border-radius: var(--radius); padding: 26px 20px; text-align: center;
}
.motto b { display: block; font-size: 40px; font-weight: 700; color: #F4F7FA; line-height: 1.2; }
.motto span { display: block; margin-top: 10px; font-size: 13px; color: var(--silver); letter-spacing: .08em; }

/* ---------- 新闻卡 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card {
  display: flex; flex-direction: column; background: var(--white);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 26px;
  transition: transform .25s, box-shadow .25s;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-1); }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.news-date { font-family: var(--font-disp); font-size: 12px; font-weight: 500; letter-spacing: .08em; color: var(--silver); }
.news-card h3 { font-size: 16.5px; line-height: 1.55; margin-bottom: 10px; }
.news-card p { font-size: 13.5px; color: var(--muted); line-height: 1.8; margin: 0; flex: 1; }

/* ---------- 询价横幅 ---------- */
.cta-band { background: linear-gradient(100deg, var(--accent-600), var(--accent) 60%, #F98F35); color: #fff; }
.cta-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
  padding: clamp(48px, 6vw, 68px) 0; flex-wrap: wrap;
}
.cta-inner h2 { color: #fff; font-size: clamp(24px, 3vw, 30px); margin-bottom: 8px; }
.cta-inner p { color: #FFF3E6; font-size: 15.5px; margin: 0; }
.cta-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.cta-phone { font-family: var(--font-disp); font-size: 24px; font-weight: 700; letter-spacing: .03em; color: #fff; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--steel-950); color: var(--silver); font-size: 14px; }
.foot-grid {
  display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.5fr; gap: 40px;
  padding: clamp(48px, 6vw, 72px) 0 44px;
}
.foot-brand .brand-name { color: #F4F7FA; }
.foot-brand .brand-sub { color: var(--silver); }
.foot-brand p { margin-top: 18px; font-size: 13.5px; line-height: 1.95; color: var(--silver); }
.foot-title { color: #E7ECF1; font-size: 15px; font-weight: 600; margin-bottom: 18px; letter-spacing: .06em; }
.foot-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.foot-list a { color: var(--silver); }
.foot-list a:hover { color: #fff; }
.foot-contact { display: grid; gap: 14px; }
.foot-contact li { display: flex; gap: 11px; align-items: flex-start; }
.foot-contact svg { width: 17px; height: 17px; flex: none; margin-top: 4px; color: var(--silver-300); }
.foot-contact .ph { font-family: var(--font-disp); font-weight: 600; font-size: 16px; color: #EDF1F6; letter-spacing: .03em; }
.foot-bottom {
  border-top: 1px solid rgba(196, 204, 213, .14);
  padding: 22px 0; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 12.5px; color: #6E7C8A;
}
.foot-bottom a { color: inherit; }

/* ---------- 内页横幅 ---------- */
.page-hero { color: #EDF1F6; }
.page-hero-inner { padding: calc(var(--header-h) + 64px) 0 60px; }
.page-hero h1 { color: #F4F7FA; font-size: clamp(28px, 4vw, 38px); margin-bottom: 12px; }
.page-hero .lead { color: var(--silver-300); font-size: 15.5px; max-width: 44em; margin: 0; }
.breadcrumb {
  margin-top: 26px; font-family: var(--font-disp); font-size: 12px;
  font-weight: 500; letter-spacing: .1em; color: var(--silver);
}
.breadcrumb a { color: var(--silver-300); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { margin: 0 8px; opacity: .5; }

/* ---------- 表格 ---------- */
.table-wrap { border: 1px solid var(--line); border-radius: var(--radius); overflow: auto; background: var(--white); }
.spec-table { width: 100%; border-collapse: collapse; min-width: 640px; }
.spec-table th {
  background: var(--steel-800); color: #fff; text-align: left;
  font-size: 14px; font-weight: 600; letter-spacing: .04em;
  padding: 13px 18px; white-space: nowrap;
}
.spec-table td { padding: 13px 18px; border-top: 1px solid var(--line); font-size: 14px; }
.spec-table td:first-child { font-weight: 600; color: var(--ink); }
.spec-table .num { font-family: var(--font-disp); font-weight: 500; color: var(--steel-700); }
.spec-table tr:hover td { background: var(--mist); }

/* ---------- 时间线 ---------- */
.timeline { position: relative; display: grid; gap: 30px; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 1px; background: var(--line); }
.tl-item { position: relative; }
.tl-item::before {
  content: ""; position: absolute; left: -29px; top: 8px; width: 11px; height: 11px;
  border-radius: 50%; background: var(--white); border: 2px solid var(--silver);
}
.tl-item--hot::before { border-color: var(--accent); background: var(--accent); }
.tl-year { font-family: var(--font-disp); font-weight: 700; font-size: 15px; color: var(--steel-600); letter-spacing: .08em; }
.tl-item h3 { font-size: 16.5px; margin: 4px 0 6px; }
.tl-item p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- 手风琴（新闻/FAQ） ---------- */
.acc { border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); margin-bottom: 14px; overflow: hidden; }
.acc[open] { border-color: var(--silver-300); box-shadow: var(--shadow-1); }
.acc summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 14px;
  padding: 20px 24px;
}
.acc summary::-webkit-details-marker { display: none; }
.acc summary:hover .news-card h3 { color: var(--steel-700); }
.acc-title { flex: 1; }
.acc-title h3 { font-size: 16.5px; margin: 0; }
.acc-chevron { flex: none; width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; color: var(--steel-600); transition: transform .25s, background .25s, color .25s; }
.acc[open] .acc-chevron { transform: rotate(180deg); background: var(--steel-800); color: #fff; border-color: var(--steel-800); }
.acc-body { padding: 2px 24px 24px; border-top: 1px dashed var(--line); margin-top: 0; padding-top: 20px; }
.acc-body p { font-size: 14.5px; line-height: 1.95; }
.acc-body p:last-child { margin-bottom: 0; }

/* ---------- 表单 ---------- */
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: flex; flex-direction: column; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.field .req { color: var(--accent); margin-left: 2px; }
.field input, .field textarea, .field select {
  font-family: var(--font-body); font-size: 15px; color: var(--ink);
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 12px 14px; transition: border-color .2s, box-shadow .2s; width: 100%;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--steel-600); box-shadow: 0 0 0 3px rgba(51, 88, 127, .14);
}
.form-note {
  grid-column: 1 / -1; background: var(--mist); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 13px 16px; font-size: 13.5px; color: var(--muted);
}

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.contact-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; transition: transform .25s, box-shadow .25s;
}
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-1); }
.contact-card h3 { font-size: 16px; margin-bottom: 12px; }
.contact-val { font-family: var(--font-disp); font-size: 17px; font-weight: 600; color: var(--steel-800); letter-spacing: .02em; word-break: break-all; }
.contact-val--zh { font-family: var(--font-body); font-size: 15px; font-weight: 500; color: var(--body-c); line-height: 1.8; }
.contact-tip { margin-top: 10px; font-size: 12.5px; color: var(--muted); }
.qr-box {
  width: 184px; height: 184px; border: 1.5px dashed var(--silver-300); border-radius: var(--radius);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  color: var(--silver); font-size: 12.5px; background: var(--white); text-align: center; padding: 12px;
}
.map-box {
  border: 1px solid var(--line); border-radius: var(--radius); background:
    linear-gradient(rgba(140, 151, 163, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 151, 163, .06) 1px, transparent 1px),
    var(--mist);
  background-size: 36px 36px, 36px 36px, auto;
  min-height: 300px; display: flex; align-items: center; justify-content: center;
  color: var(--silver); font-size: 14px; gap: 10px;
}

/* ---------- 滚动渐显 ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .2, 1); transition-delay: var(--d, 0s); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-copy > * { opacity: 1; animation: none; }
  .hero-art .draw { stroke-dashoffset: 0; animation: none; }
  .hero-art .lbl { opacity: 1; animation: none; }
}

/* ---------- 双栏内容布局 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: start; }
.check-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.check-list li { display: flex; gap: 12px; font-size: 15px; line-height: 1.8; }
.check-list svg { width: 20px; height: 20px; color: var(--accent-600); flex: none; margin-top: 5px; }
.check-list b { color: var(--ink); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; padding-bottom: 56px; }
  .hero-art { max-width: 520px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .biz-grid { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .proc-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); row-gap: 34px; }
  .news-grid { grid-template-columns: 1fr; }
  .about-grid, .split { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 960px) {
  .nav, .nav-actions .lang-switch, .nav-actions .btn { display: none; }
  .nav-toggle { display: block; }
  .nav-actions { margin-left: auto; }
}
@media (max-width: 640px) {
  body { font-size: 15px; }
  .container { width: calc(100% - 40px); }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .stat-plate { padding: 22px 18px 18px; }
  .prod-grid { grid-template-columns: 1fr; }
  .proc-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .proc-card { padding: 20px 14px; }
  .flow { grid-template-columns: 1fr; padding-left: 24px; }
  .flow-step { padding-top: 0; padding-left: 0; }
  .flow-step::before { top: 6px; bottom: -30px; left: 0; right: auto; width: 1px; height: auto; }
  .flow-step::after { top: 3px; left: -3.5px; }
  .flow-step:last-child::before { display: none; }
  .why-grid { grid-template-columns: 1fr; }
  .motto-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .motto { padding: 20px 10px; }
  .motto b { font-size: 30px; }
  .form { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 30px; }
  .origin-item { padding: 0 14px; font-size: 13px; }
  .hero-ctas .btn { flex: 1 1 auto; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}