/* ============================================================
   Great Virtue Trading Limited — 视觉系统 v2
   ------------------------------------------------------------
   设计基调:鎏金杂志风(白纸 + 品牌金 + 墨黑)。
   本版确立三件事:
     1. 品牌金与标识同源 —— 由亮金收敛为可用于界面的色阶;
     2. 统一的尺度系统 —— 间距、字号、圆角、阴影、动效曲线;
     3. 细节层级 —— 细金线、微交互、滚动揭示,克制而有质感。
   ============================================================ */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/inter-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/inter-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/inter-600.woff2') format('woff2');
}

/* ------------------------------------------------------------
   1. 设计令牌
   ------------------------------------------------------------ */
:root {
  /* —— 品牌金:与标识同源的色阶 —— */
  --gold-50:   #FCFAF4;
  --gold-100:  #F7F1E3;
  --gold-200:  #EDE0C6;
  --gold-300:  #DCC79E;
  --gold-400:  #C6A876;
  --gold-500:  #B08D55;  /* 主色 —— 用于填充、线条、图标 */
  --gold-600:  #96733F;  /* 文字金 —— 白底上安全 */
  --gold-700:  #775A31;  /* 深文字金 —— 小字号标签 */

  /* 兼容旧引用 */
  --gold: var(--gold-600);
  --gold-light: var(--gold-400);
  --gold-dark: var(--gold-700);

  /* —— 墨色(略微偏冷,更显商务) —— */
  --ink-900: #0D1014;
  --ink-800: #14181D;
  --ink-700: #1E242B;
  --ink-600: #39414A;
  --ink-500: #5C646E;
  --ink-400: #8B9299;

  --ink: var(--ink-800);
  --ink-soft: var(--ink-500);
  --navy: var(--ink-800);       /* 兼容历史内联样式 */

  /* —— 纸与线 —— */
  --bg: #FFFFFF;
  --paper: #FAF8F4;
  --paper-2: #F3EEE5;
  --ghost: #EDEBE5;
  --line: #E8E3D9;
  --line-strong: #CFC9BD;

  /* —— 尺度 —— */
  --header-h: 78px;
  --maxw: 1280px;
  --gutter: 32px;

  --sh-1: 0 1px 2px rgba(13,16,20,.04);
  --sh-2: 0 12px 32px rgba(13,16,20,.07);
  --sh-3: 0 24px 64px rgba(13,16,20,.13);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI',
          'PingFang SC', 'Hiragino Sans GB', 'Source Han Sans SC',
          'Noto Sans SC', 'Microsoft YaHei', sans-serif;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --dur: .34s;
}

/* ------------------------------------------------------------
   2. 基础
   ------------------------------------------------------------ */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.78;
  letter-spacing: .012em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--dur) var(--ease); }
ul { list-style: none; }
svg { flex: none; }

::selection { background: var(--gold-200); color: var(--ink-900); }

:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
  border-radius: 1px;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  width: 100%;
}

/* 小标签(金色大字距,全站统一) */
.eyebrow {
  color: var(--gold-600);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  line-height: 1.5;
}

/* 正文中的强调词 */
.hl { color: var(--gold-700); font-weight: 600; }

/* ------------------------------------------------------------
   3. 按钮
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-width: 152px;
  padding: 15px 34px;
  font-family: var(--font);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .06em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.btn:active { transform: translateY(0); }

/* 主按钮 —— 品牌金实底,深浅底皆可读 */
.btn-gold {
  background: linear-gradient(180deg, var(--gold-400) 0%, var(--gold-500) 100%);
  color: #1C1407;
  border-color: var(--gold-500);
  box-shadow: 0 6px 18px rgba(176, 141, 85, .25);
}
.btn-gold:hover {
  background: linear-gradient(180deg, var(--gold-300) 0%, var(--gold-400) 100%);
  border-color: var(--gold-400);
  box-shadow: 0 12px 28px rgba(176, 141, 85, .34);
  transform: translateY(-2px);
}

/* 次按钮 —— 深底上的玻璃描边 */
.btn-ghost {
  background: rgba(255, 255, 255, .07);
  color: #fff;
  border-color: rgba(255, 255, 255, .45);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: #fff;
  color: var(--ink-900);
  border-color: #fff;
  transform: translateY(-2px);
}

/* ------------------------------------------------------------
   4. 顶部导航
   ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 16, 20, .88);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  transition: background var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
/* 顶部金线 —— 品牌识别细节 */
.site-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%, var(--gold-500) 20%,
    var(--gold-300) 50%, var(--gold-500) 80%, transparent 100%);
  opacity: .85;
}
.site-header.scrolled {
  background: rgba(11, 13, 16, .97);
  border-bottom-color: rgba(176, 141, 85, .34);
  box-shadow: 0 10px 34px rgba(0, 0, 0, .3);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.brand { display: flex; align-items: center; gap: 12px; color: #fff; }
.brand-mark { height: 46px; width: auto; object-fit: contain; display: block; }
.brand-name { font-size: 15px; font-weight: 600; letter-spacing: 1px; line-height: 1.35; }
.brand-name small {
  display: block; font-size: 10.5px; font-weight: 500;
  color: var(--gold-300); letter-spacing: 2px;
}

.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a[data-nav] {
  position: relative;
  color: rgba(255, 255, 255, .88);
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: .06em;
  padding: 8px 0;
  transition: color var(--dur) var(--ease);
}
.nav-links a[data-nav]::after {
  content: '';
  position: absolute;
  left: 0; bottom: 2px;
  width: 0; height: 1px;
  background: var(--gold-300);
  transition: width var(--dur) var(--ease);
}
.nav-links a[data-nav]:hover { color: #fff; }
.nav-links a[data-nav]:hover::after { width: 100%; }
.nav-links a[data-nav].active { color: var(--gold-300); }
.nav-links a[data-nav].active::after { width: 100%; }

.lang-switch {
  display: flex;
  gap: 3px;
  margin-left: 14px;
  padding-left: 20px;
  border-left: 1px solid rgba(255, 255, 255, .16);
}
.lang-switch a {
  font-size: 12.5px;
  font-weight: 500;
  color: rgba(255, 255, 255, .62);
  padding: 4px 10px;
  letter-spacing: .08em;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.lang-switch a:hover { color: var(--gold-300); }
.lang-switch a.current {
  color: var(--ink-900);
  background: var(--gold-400);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  margin-right: -10px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: #fff;
  margin: 5px 0;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

/* ------------------------------------------------------------
   5. 首屏
   ------------------------------------------------------------ */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: #fff;
  padding: clamp(104px, 12vw, 158px) 0 clamp(88px, 10vw, 130px);
  background: #0D1014 url("../img/hero-trade.jpg") center 44% / cover no-repeat;
}
/* 双层遮罩:左侧留深,保证标题对比;上下压暗,收住画面 */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(100deg,
      rgba(9, 11, 14, .93) 0%, rgba(9, 11, 14, .78) 34%,
      rgba(9, 11, 14, .40) 66%, rgba(9, 11, 14, .58) 100%),
    linear-gradient(180deg,
      rgba(9, 11, 14, .58) 0%, rgba(9, 11, 14, .06) 36%, rgba(9, 11, 14, .74) 100%);
}
.hero > .container { position: relative; z-index: 1; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--gold-300);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .28em;
  text-transform: uppercase;
  margin-bottom: 26px;
}
.hero-eyebrow::before {
  content: '';
  width: 42px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-400));
}

.hero h1 {
  font-size: clamp(34px, 5.2vw, 64px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .02em;
  max-width: 860px;
  text-wrap: balance;
  text-shadow: 0 2px 30px rgba(0, 0, 0, .4);
}
.hero h1 em { font-style: normal; color: var(--gold-300); }

.hero .sub {
  margin: 22px 0 0;
  font-size: clamp(15px, 1.4vw, 17.5px);
  color: rgba(255, 255, 255, .84);
  letter-spacing: .04em;
  max-width: 760px;
}
.hero .desc {
  margin-top: 26px;
  max-width: 660px;
  color: rgba(255, 255, 255, .74);
  font-size: 15.5px;
  line-height: 1.95;
  text-wrap: pretty;
}

.hero-actions {
  margin-top: 42px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* 首屏资质徽标 —— 悬浮玻璃卡 */
.hero-badge {
  position: absolute;
  right: max(var(--gutter), calc((100% - var(--maxw)) / 2 + var(--gutter)));
  bottom: 64px;
  z-index: 2;
  min-width: 250px;
  padding: 20px 26px 20px 28px;
  background: rgba(20, 24, 29, .62);
  border: 1px solid rgba(198, 168, 118, .38);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  color: rgba(255, 255, 255, .7);
  font-size: 12.5px;
  line-height: 1.8;
  letter-spacing: .04em;
  box-shadow: 0 20px 50px rgba(0, 0, 0, .35);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
/* 左侧金线 */
.hero-badge::before {
  content: '';
  position: absolute;
  left: 0; top: 18px; bottom: 18px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold-300), var(--gold-600));
}
.hero-badge strong {
  display: block;
  color: var(--gold-300);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .06em;
  margin-bottom: 4px;
}
.hero-badge:hover {
  border-color: rgba(198, 168, 118, .7);
  transform: translateY(-3px);
}

/* ------------------------------------------------------------
   6. 内页页头
   ------------------------------------------------------------ */
.page-head {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: #0D1014;
  color: #fff;
  padding: clamp(58px, 7vw, 92px) 0 clamp(48px, 6vw, 74px);
}
/* 右上斜射金光 + 底部渐隐 */
.page-head::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(120% 170% at 86% -30%, rgba(176, 141, 85, .34), transparent 60%),
    linear-gradient(180deg, rgba(13, 16, 20, 0) 40%, rgba(13, 16, 20, .65) 100%);
}
/* 底部金线 */
.page-head::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(176, 141, 85, .55) 45%, transparent);
}
.page-head > .container { position: relative; z-index: 1; }

.page-head h1 {
  font-size: clamp(30px, 3.6vw, 46px);
  margin-top: 14px;
  letter-spacing: .03em;
  font-weight: 600;
  line-height: 1.25;
}
.page-head .eyebrow { color: var(--gold-300); }
.page-head .lead {
  margin-top: 18px;
  max-width: 700px;
  color: rgba(255, 255, 255, .74);
  font-size: 16px;
  line-height: 1.9;
  text-wrap: pretty;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .5);
  margin-bottom: 22px;
}
.breadcrumb a { color: rgba(255, 255, 255, .72); }
.breadcrumb a:hover { color: var(--gold-300); }
.breadcrumb span { color: rgba(255, 255, 255, .3); }
.breadcrumb em { font-style: normal; color: var(--gold-300); }

/* ------------------------------------------------------------
   7. 区块与标题
   ------------------------------------------------------------ */
.section { padding: clamp(64px, 7vw, 96px) 0; }
.section.soft { background: var(--paper); }

.section-title { text-align: left; margin-bottom: 48px; }
.section-title .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 12px;
}
.section-title .eyebrow::before {
  content: '';
  width: 26px; height: 1px;
  background: var(--gold-400);
}
.section-title h2 {
  font-size: clamp(25px, 3vw, 34px);
  color: var(--ink-800);
  margin: 0;
  letter-spacing: .03em;
  font-weight: 600;
  line-height: 1.35;
  text-wrap: balance;
}
.section-title p {
  color: var(--ink-soft);
  max-width: 660px;
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  text-wrap: pretty;
}
.section-title.left { text-align: left; }

/* ------------------------------------------------------------
   8. 业务板块(全宽分行:编号 + 文字 + 实景图)
   ------------------------------------------------------------ */
.cards {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line-strong);
  counter-reset: svc;
}
.card {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  background: transparent;
  border-bottom: 1px solid var(--line-strong);
  transition: background var(--dur) var(--ease);
}
.card:hover { background: var(--paper); }
/* 悬停时左侧金线生长 */
.card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--gold-500);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur) var(--ease);
  z-index: 2;
}
.card:hover::before { transform: scaleY(1); }

.card-cover {
  position: relative;
  width: 440px;
  min-height: 250px;
  flex: none;
  order: 2;
  overflow: hidden;
  background: var(--ghost);
}
/* 图片走伪元素,便于缩放而不动布局 */
.card-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: inherit;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  transition: transform .7s var(--ease);
}
.card:hover .card-cover::before { transform: scale(1.06); }
.cover-metals { background-image: url("../img/card-metals.jpg"); }
.cover-agri   { background-image: url("../img/card-agri.jpg"); }
.cover-energy { background-image: url("../img/card-energy.jpg"); }

.card-body {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 38px 44px 38px 100px;
  counter-increment: svc;
}
.card-body .svc-ghost {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: .12em;
  color: var(--gold-600);
  font-variant-numeric: tabular-nums;
  user-select: none;
}
.card-body .svc-ghost::before { content: counter(svc, decimal-leading-zero); }

.card-body h3 {
  color: var(--ink-800);
  font-size: 21px;
  letter-spacing: .04em;
  font-weight: 600;
  line-height: 1.4;
}
.card-body h3 small {
  display: block;
  font-size: 12px;
  color: var(--ink-400);
  letter-spacing: .16em;
  margin-top: 6px;
  font-weight: 500;
  text-transform: uppercase;
}
.card-body p {
  margin-top: 14px;
  color: var(--ink-soft);
  font-size: 15px;
  max-width: 520px;
  text-wrap: pretty;
}

.card-tags { display: flex; flex-wrap: wrap; margin-top: 16px; }
.card-tags span { font-size: 13px; color: var(--ink-soft); letter-spacing: .04em; }
.card-tags span + span::before {
  content: '·';
  margin: 0 9px;
  color: var(--line-strong);
}

.card-more {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--ink-800);
  transition: color var(--dur) var(--ease);
}
.card-more::after {
  content: '';
  width: 8px; height: 8px;
  border-right: 1.5px solid var(--gold-500);
  border-bottom: 1.5px solid var(--gold-500);
  transform: rotate(-45deg);
  transition: transform var(--dur) var(--ease);
}
a.card:hover .card-more { color: var(--gold-700); }
a.card:hover .card-more::after { transform: rotate(-45deg) translate(3px, 3px); }

/* ------------------------------------------------------------
   9. 两栏图文
   ------------------------------------------------------------ */
.two-col {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: clamp(40px, 5vw, 76px);
  align-items: center;
}
.two-col h2 {
  font-size: clamp(26px, 2.8vw, 35px);
  color: var(--ink-800);
  letter-spacing: .03em;
  margin-bottom: 20px;
  font-weight: 600;
  line-height: 1.35;
  text-wrap: balance;
}
.two-col p {
  color: var(--ink-soft);
  margin-bottom: 14px;
  font-size: 15.5px;
  line-height: 1.9;
  text-wrap: pretty;
}
.two-col .btn { margin-top: 12px; }

/* 实景图框 —— 右下角金色折角
   图片由 --fig-img 按页注入:图注写的是什么,画面就得是什么 */
.figure-ph {
  --fig-img: none;
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: flex-end;
  padding: 24px 28px;
  background-color: #14181D;
  background-image:
    linear-gradient(180deg, rgba(10, 10, 12, .06) 38%, rgba(10, 10, 12, .68) 100%),
    var(--fig-img);
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  color: rgba(255, 255, 255, .88);
  font-size: 12px;
  letter-spacing: .28em;
  text-transform: uppercase;
}
.figure-ph--index  { --fig-img: url("../img/fig-index.jpg"); }
.figure-ph--about  { --fig-img: url("../img/fig-about.jpg"); }
.figure-ph--metals { --fig-img: url("../img/fig-metals.jpg"); }
.figure-ph--agri   { --fig-img: url("../img/fig-agri.jpg"); }
.figure-ph--energy { --fig-img: url("../img/fig-energy.jpg"); }
.figure-ph::after {
  content: '';
  position: absolute;
  right: 16px; bottom: 16px;
  width: 44px; height: 44px;
  border-right: 1px solid rgba(198, 168, 118, .75);
  border-bottom: 1px solid rgba(198, 168, 118, .75);
  pointer-events: none;
}

/* ------------------------------------------------------------
   10. 栅格与特性卡
   ------------------------------------------------------------ */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.feature {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  padding: 32px 28px;
  overflow: hidden;
  transition: transform var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
/* 顶部金线 —— 卡片静置时的唯一金色装饰,默认一小段,悬停延伸至整卡宽度。
   此处用 width 而非 scaleX:scaleX 的默认长度会随卡片宽度变化
   (grid-2 单卡约 596px、grid-4 约 286px,同一比例出来长度差一倍),
   固定 36px 起始段才能保证全站观感一致。 */
.feature::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 36px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold-400), var(--gold-600));
  transition: width var(--dur) var(--ease);
}
.feature:hover::before { width: 100%; }
.feature:hover {
  transform: translateY(-4px);
  border-color: var(--gold-200);
  box-shadow: var(--sh-2);
}
.feature .ico {
  width: 46px; height: 46px;
  margin-bottom: 20px;
  border: 1px solid var(--gold-300);
  color: var(--gold-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.feature h3 {
  color: var(--ink-800);
  font-size: 17.5px;
  margin-bottom: 12px;
  font-weight: 600;
  letter-spacing: .03em;
  line-height: 1.5;
}
.feature p {
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.85;
  text-wrap: pretty;
}

/* ------------------------------------------------------------
   11. 表格
   ------------------------------------------------------------ */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--sh-1);
}
table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 15px;
}
th, td {
  padding: 19px 24px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  background: var(--paper);
  color: var(--gold-700);
  font-weight: 600;
  white-space: nowrap;
  width: 200px;
  font-size: 12.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  border-right: 1px solid var(--line);
}
tr:last-child td { border-bottom: none; }
td { color: var(--ink-800); line-height: 1.8; }

/* ------------------------------------------------------------
   12. 联系方式
   ------------------------------------------------------------ */
.contact-grid { display: flex; flex-direction: column; max-width: 780px; }
.contact-card {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  align-items: baseline;
  padding: 22px 4px;
  border: 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  transition: border-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.contact-card:first-child { border-top: 1px solid var(--line); }
.contact-card:hover { border-bottom-color: var(--gold-300); }
.contact-card .ico { display: none; }
.contact-card h3 {
  margin: 0;
  color: var(--gold-700);
  font-size: 12.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-weight: 600;
}
.contact-card p {
  margin: 0;
  color: var(--ink-800);
  font-size: 16.5px;
  font-weight: 500;
  word-break: break-word;
}
.contact-card a:hover { color: var(--gold-700); }

/* 地址呈现卡 */
.address-card {
  margin-top: 32px;
  padding: 34px 28px;
  text-align: center;
  background: var(--paper);
  border: 1px solid var(--line);
}
.address-card h3 {
  color: var(--ink-800);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: .03em;
}
.address-card p { color: var(--ink-soft); font-size: 15.5px; line-height: 1.9; }

.map-frame {
  margin-top: 56px;
  border: 1px solid var(--line);
  box-shadow: var(--sh-1);
}
.map-frame iframe { width: 100%; height: 420px; border: 0; display: block; }

/* ------------------------------------------------------------
   13. 注册证明书展示
   ------------------------------------------------------------ */
.license-grid { align-items: center; }

.license-doc {
  margin: 0;
  width: 100%;
  max-width: 380px;
  justify-self: end;
}

.license-doc .doc-frame {
  position: relative;
  display: block;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-2);
  transition: transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

/* 内嵌细金线 —— 纸面装裱感,不与证书自身的金色边框争夺视线 */
.license-doc .doc-frame::after {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(198, 168, 118, .3);
  pointer-events: none;
}

.license-doc img { display: block; width: 100%; height: auto; }

.license-doc .doc-frame:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-3);
}

.license-doc figcaption {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.78;
  color: var(--ink-500);
  text-align: right;
}

.license-doc figcaption b { color: var(--ink-900); font-weight: 600; }

/* ------------------------------------------------------------
   14. 页脚
   ------------------------------------------------------------ */
.site-footer {
  position: relative;
  background: var(--paper);
  color: var(--ink-soft);
  padding: 78px 0 30px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}
/* 顶部金线 */
.site-footer::before {
  content: '';
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-400) 50%, transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}
.site-footer h4 {
  color: var(--ink-800);
  font-size: 15px;
  margin-bottom: 18px;
  letter-spacing: .04em;
  font-weight: 600;
}
.site-footer h4 span { color: var(--gold-700); }
.site-footer p { line-height: 1.9; }
.footer-reg { line-height: 2; }
.footer-reg b { color: var(--gold-700); font-weight: 600; }
.footer-bottom {
  padding-top: 28px;
  text-align: center;
  color: var(--ink-400);
  font-size: 12.5px;
  letter-spacing: .08em;
}

/* ------------------------------------------------------------
   15. 图标与装饰
   ------------------------------------------------------------ */
.fi {
  width: 15px; height: 15px;
  vertical-align: -2px;
  margin-right: 8px;
  color: var(--gold-600);
}
/* 注:.feature h3::before 的 26px 短金块已移除 —— 它与 .feature::before
   的顶部金线重复,且过短(26×2px)读起来像杂点,还在标题上方堆出 18px 死空间。
   卡片金线装饰统一由 .feature::before 承担。 */

/* 回到顶部 */
.to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 90;
  width: 46px; height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ink-900);
  border: 1px solid rgba(198, 168, 118, .35);
  color: var(--gold-300);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              visibility var(--dur) var(--ease),
              background var(--dur) var(--ease);
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--gold-600); color: #fff; border-color: var(--gold-600); }

/* ------------------------------------------------------------
   16. 滚动揭示(仅在 JS 可用时生效,避免无脚本时内容不可见)
   ------------------------------------------------------------ */
html.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
}
html.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

/* ------------------------------------------------------------
   17. 响应式
   ------------------------------------------------------------ */
@media (max-width: 1080px) {
  .hero-badge { display: none; }
}

/* 平板与横屏手机 —— 导航收进抽屉。
   横排导航连品牌在内需要约 990px(英文标签更长,需 1024px),
   低于 1024px 时链接会被挤成两三行,故统一改用抽屉式菜单。 */
@media (max-width: 1023px) {
  .nav-toggle { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(11, 13, 16, .98);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px var(--gutter) 24px;
    border-bottom: 1px solid rgba(176, 141, 85, .3);
    box-shadow: 0 22px 44px rgba(0, 0, 0, .38);
    max-height: calc(100vh - var(--header-h));
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    overscroll-behavior: contain;
  }
  .nav-links.open { display: flex; }

  /* 抽屉内每一项都是整行触摸目标 */
  .nav-links a[data-nav] {
    padding: 16px 2px;
    font-size: 15.5px;
    border-bottom: 1px solid rgba(255, 255, 255, .09);
  }
  .nav-links a[data-nav]::after { display: none; }
  .nav-links a[data-nav].active { color: var(--gold-300); }

  .lang-switch {
    border: none;
    margin: 0;
    padding: 18px 0 0;
    gap: 8px;
  }
  .lang-switch a { padding: 12px 18px; font-size: 14px; }

  body.nav-open { overflow: hidden; }
}

@media (max-width: 960px) {
  :root { --gutter: 28px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .card { flex-direction: column; }
  .card-cover { width: 100%; min-height: 200px; order: 0; }
  .card-body { padding: 26px 4px 30px 56px; }
  .card-body .svc-ghost { top: 32px; transform: none; }
}

@media (max-width: 640px) {
  :root { --gutter: 20px; --header-h: 68px; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

  /* 资质表格:窄屏改为「标签在上、内容在下」,避免两列互挤 */
  .table-wrap { overflow-x: visible; }
  .table-wrap table,
  .table-wrap tbody,
  .table-wrap tr,
  .table-wrap th,
  .table-wrap td { display: block; width: auto; }
  .table-wrap tr { border-bottom: 1px solid var(--line); }
  .table-wrap tr:last-child { border-bottom: 0; }
  .table-wrap th {
    width: auto;
    white-space: normal;
    background: transparent;
    border-right: 0;
    border-bottom: 0;
    padding: 16px 18px 2px;
  }
  .table-wrap td { border-bottom: 0; padding: 2px 18px 18px; }

  /* 电话 / 邮箱是关键动作,给足触摸面积(≥44px) */
  .contact-card p a { display: inline-block; padding: 12px 0; }
  .breadcrumb a { display: inline-block; padding: 8px 2px; }

  .license-doc { max-width: 400px; }
  .section { padding: 56px 0; }
  .section-title { margin-bottom: 36px; }
  .hero { padding: 84px 0 72px; }
  .hero .desc { font-size: 15px; }
  .hero-actions { margin-top: 34px; }
  .hero-actions .btn { flex: 1 1 100%; }

  .card-body { padding: 24px 4px 26px 46px; }
  .card-body .svc-ghost { font-size: 12px; top: 28px; }
  .contact-card { grid-template-columns: 1fr; gap: 6px; }
  .figure-ph { min-height: 260px; }
  .map-frame iframe { height: 320px; }
  .to-top { right: 16px; bottom: 16px; width: 44px; height: 44px; }
}

/* ------------------------------------------------------------
   18. 打印
   ------------------------------------------------------------ */
@media print {
  .site-header, .to-top, .hero-badge, .map-frame { display: none; }
  .hero, .page-head { background: #fff !important; color: #000; }
  .hero::after, .page-head::before { display: none; }
  .hero h1, .hero .sub, .hero .desc, .page-head h1, .page-head .lead { color: #000; }
  .section { padding: 24px 0; }
  a { text-decoration: none; }
}