/* ==========================================================================
   微行网联 · 河南微行智能网联科技有限公司 官网样式
   设计系统：暖橙编辑风 —— 米白纸感 / 宋体大标题 / 朱红强调 / 细线分隔
   ========================================================================== */

:root {
  /* 纸感底色 */
  --paper:      #faf7f2;
  --paper-2:    #f4efe5;
  --paper-3:    #ece5d7;

  /* 墨色文字 */
  --ink:        #201c17;
  --ink-2:      #4d463c;
  --ink-3:      #7d7466;

  /* 描线 */
  --line:       #e3dbcd;
  --line-2:     #d2c8b6;

  /* 朱红主强调 */
  --accent:     #b7410e;
  --accent-2:   #93320a;
  --accent-soft:#fbeade;

  /* 辅色（分类变体，统一降饱和） */
  --gold:       #9a6a1f;
  --gold-soft:  #f8efdd;
  --steel:      #42566b;
  --steel-soft: #e8edf2;
  --pine:       #20655c;
  --pine-soft:  #e4efec;

  --dark:       #201c17;

  --wrap: 1200px;
  --header-h: 78px;

  --serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif SC",
           "Source Han Serif CN", "SimSun", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-2);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

/* 极淡的纸纹：细密网点，避免大面积纯色的平板感 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: radial-gradient(rgba(32, 28, 23, .035) 1px, transparent 1px);
  background-size: 3px 3px;
  opacity: .55;
}

body > * { position: relative; z-index: 1; }

img { max-width: 100%; height: auto; }

a { color: var(--accent); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--accent-2); }

h1, h2, h3, h4, h5 {
  font-family: var(--serif);
  color: var(--ink);
  font-weight: 700;
  line-height: 1.34;
  margin: 0;
  letter-spacing: .01em;
}

p { margin: 0 0 14px; }
ul, ol { margin: 0; padding: 0; }

::selection { background: var(--accent); color: #fff; }

/* --------------------------------------------------------------------------
   布局容器
   -------------------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 32px;
}

.section { padding: 92px 0; }
.section.tight { padding: 54px 0; }
.section.soft { background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section.dark { background: var(--dark); color: #cdc4b6; }
.section.dark h2, .section.dark h3, .section.dark h4 { color: var(--paper); }
.section.dark .lead { color: #9c9385; }
.section.dark p { color: #cdc4b6; }

/* --------------------------------------------------------------------------
   顶部信息条（刊头）
   -------------------------------------------------------------------------- */
.topbar {
  background: var(--dark);
  color: #a79e90;
  font-size: 12.8px;
  letter-spacing: .03em;
}
.topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  min-height: 38px;
}
.topbar a { color: #d8cfc1; }
.topbar a:hover { color: #fff; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.topbar-right .dot { color: #5d564c; }

/* --------------------------------------------------------------------------
   页头
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(250, 247, 242, .94);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line-2);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 26px;
  min-height: var(--header-h);
}

.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand-mark {
  width: 44px; height: 44px;
  display: block;
  border: 1px solid var(--line-2);
  background: #fff url("../img/brand-mark.png") center/contain no-repeat;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong {
  font-family: var(--serif);
  font-size: 20px;
  color: var(--ink);
  letter-spacing: .06em;
}
.brand-text small {
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: .04em;
  white-space: nowrap;
}

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  position: relative;
  padding: 8px 12px;
  font-size: 14.6px;
  color: var(--ink-2);
  white-space: nowrap;
  transition: color .2s ease;
}
.nav a:hover { color: var(--accent); background: none; }
.nav a.is-active { color: var(--accent); font-weight: 600; }
.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 2px;
  background: var(--accent);
}

.header-cta { flex: none; margin-left: 6px; }

.mobile-toggle {
  display: none;
  width: 42px; height: 42px;
  margin-left: auto;
  border: 1px solid var(--line-2);
  background: var(--paper);
  cursor: pointer;
  padding: 0;
  position: relative;
}
.mobile-toggle span,
.mobile-toggle span::before,
.mobile-toggle span::after {
  position: absolute;
  left: 12px;
  width: 17px; height: 1.6px;
  background: var(--ink);
  transition: transform .25s ease, opacity .2s ease;
}
.mobile-toggle span { top: 20px; }
.mobile-toggle span::before { content: ""; top: -5px; left: 0; }
.mobile-toggle span::after  { content: ""; top: 5px;  left: 0; }

/* --------------------------------------------------------------------------
   按钮：直角、实色、无渐变
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 14.5px;
  font-weight: 600;
  font-family: var(--sans);
  letter-spacing: .02em;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn-lg { padding: 15px 32px; font-size: 15.5px; }
.btn-sm { padding: 8px 16px; font-size: 13.4px; }

.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-2); color: #fff; border-color: var(--accent-2); }

.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink-2); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.btn-outline { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-outline:hover { background: var(--accent); color: #fff; }

/* --------------------------------------------------------------------------
   区块标题：细线上方 + 宋体大标题
   -------------------------------------------------------------------------- */
.section-head { max-width: 780px; margin-bottom: 46px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.section-head::before {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  background: var(--line-2);
  margin-bottom: 26px;
}
.section.dark .section-head::before { background: #3d372f; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12.4px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--accent);
  background: none;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 30px; height: 2px;
  background: var(--accent);
}
.section.dark .eyebrow { color: #e0864f; }
.section.dark .eyebrow::before { background: #e0864f; }

.section-head h2 { font-size: clamp(26px, 3.1vw, 38px); margin-bottom: 14px; }
.section-head .lead {
  font-size: 16px;
  color: var(--ink-3);
  line-height: 1.9;
  margin: 0;
}
.section-head.center .eyebrow { justify-content: center; }

h2 { font-size: clamp(24px, 2.6vw, 32px); }
h3 { font-size: 19px; }

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

/* --------------------------------------------------------------------------
   滚动淡入
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.in { opacity: 1; transform: none; }

/* --------------------------------------------------------------------------
   首屏：刊头式大标题 + 侧栏索引
   -------------------------------------------------------------------------- */
.hero {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 60px;
  align-items: start;
  padding-top: 74px;
  padding-bottom: 78px;
}

.hero h1 {
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.26;
  letter-spacing: .005em;
  margin: 4px 0 22px;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 4px;
  text-decoration-color: rgba(183, 65, 14, .22);
  text-underline-offset: 9px;
}

.hero-sub {
  font-size: 16.5px;
  line-height: 1.95;
  color: var(--ink-2);
  max-width: 640px;
  margin-bottom: 22px;
}
.hero-sub strong { color: var(--ink); font-weight: 600; }

.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; }
.hero-tags span {
  padding: 5px 13px;
  border: 1px solid var(--line-2);
  background: var(--paper-2);
  font-size: 13px;
  color: var(--ink-2);
  letter-spacing: .02em;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* 侧栏索引卡 */
.hero-card {
  border: 1px solid var(--line-2);
  background: var(--paper-2);
  padding: 30px 28px;
}
.hero-card h3 {
  font-size: 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
.hero-card ul { list-style: none; margin-top: 20px; }
.hero-card li {
  display: flex;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--line-2);
  font-size: 14.2px;
  line-height: 1.78;
}
.hero-card li:last-child { border-bottom: 0; }
.hero-card li b {
  display: block;
  font-family: var(--serif);
  font-size: 15.5px;
  color: var(--ink);
  margin-bottom: 2px;
}
.hero-card li > span:last-child { color: var(--ink-3); }

/* 对勾 -> 朱红小方块 */
.tick {
  flex: none;
  width: 8px; height: 8px;
  margin-top: 9px;
  background: var(--accent);
}
.tick::after { content: none; }

/* --------------------------------------------------------------------------
   数据条：细线分隔 + 宋体大数字
   -------------------------------------------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  background: var(--paper);
}
.stat {
  padding: 26px 22px;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: 0; }
.stat b {
  display: block;
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--accent);
  margin-bottom: 4px;
}
.stat span { font-size: 13.4px; color: var(--ink-3); letter-spacing: .04em; }

/* --------------------------------------------------------------------------
   通用卡片：平边、细线、无阴影
   -------------------------------------------------------------------------- */
.card {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 28px 26px;
  transition: border-color .25s ease, background .25s ease, transform .25s ease;
}
.card:hover {
  border-color: var(--accent);
  background: #fff;
  transform: translateY(-3px);
}
.card h3 { margin-bottom: 10px; font-size: 18.5px; }
.card p { font-size: 14.4px; color: var(--ink-3); margin: 0; line-height: 1.82; }

/* 图标：宋体字面方块，不用圆形渐变 */
.card-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  border: 1px solid rgba(183, 65, 14, .2);
  border-radius: 2px;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  background: var(--accent-soft);
  color: var(--accent);
  box-shadow: none;
}
.card-icon.orange { background: var(--gold-soft); border-color: rgba(154, 106, 31, .22); color: var(--gold); }
.card-icon.slate  { background: var(--steel-soft); border-color: rgba(66, 86, 107, .22); color: var(--steel); }
.card-icon.teal   { background: var(--pine-soft); border-color: rgba(32, 101, 92, .22); color: var(--pine); }

.card-tag {
  display: inline-block;
  padding: 2px 9px;
  border: 1px solid var(--line-2);
  border-radius: 2px;
  background: var(--paper-2);
  color: var(--ink-3);
  font-size: 11.8px;
  letter-spacing: .08em;
  margin-bottom: 12px;
}

/* 深色区卡片 */
.section.dark .card {
  background: rgba(255, 255, 255, .03);
  border-color: #3d372f;
}
.section.dark .card:hover { border-color: #e0864f; background: rgba(255, 255, 255, .05); }
.section.dark .card p { color: #9c9385; }
.section.dark .card-icon {
  background: rgba(224, 134, 79, .12);
  border-color: rgba(224, 134, 79, .3);
  color: #e0864f;
}

/* --------------------------------------------------------------------------
   业务大卡
   -------------------------------------------------------------------------- */
.biz-card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: transform .25s ease, border-color .25s ease;
}
.biz-card:hover { transform: translateY(-3px); border-color: var(--line-2); }

.biz-card-head {
  padding: 24px 28px 18px;
  border-top: 3px solid var(--accent);
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
}
.biz-card-head.orange { border-top-color: var(--gold); }
.biz-card-head.slate  { border-top-color: var(--steel); }
.biz-card-head.teal   { border-top-color: var(--pine); }
.biz-card-head h3 { font-size: 21px; margin-bottom: 5px; }
.biz-card-head p {
  margin: 0;
  font-size: 13.2px;
  color: var(--ink-3);
  letter-spacing: .05em;
}

.biz-card-body { padding: 22px 28px 26px; display: flex; flex-direction: column; flex: 1; }
.biz-card-body ul { list-style: none; margin-bottom: 18px; }
.biz-card-body li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 9px;
  font-size: 14.2px;
  line-height: 1.78;
  color: var(--ink-2);
}
.biz-card-body li::before {
  content: "";
  position: absolute;
  left: 0; top: 11px;
  width: 6px; height: 6px;
  background: var(--accent);
}
.card-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: .03em;
}
.card-link:hover { color: var(--accent-2); }

/* --------------------------------------------------------------------------
   分销模式网格
   -------------------------------------------------------------------------- */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.mode {
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 24px 22px;
  background: var(--paper);
  transition: border-color .25s ease, transform .25s ease;
}
.mode:hover { border-color: var(--accent); transform: translateY(-3px); }
.mode-top { display: flex; align-items: baseline; gap: 10px; margin-bottom: 10px; }
.mode-badge {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
}
.mode h4 { font-size: 16.5px; }
.mode p { font-size: 13.8px; color: var(--ink-3); margin: 0; line-height: 1.78; }

/* --------------------------------------------------------------------------
   流程步骤：细线 + 自动序号
   -------------------------------------------------------------------------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); counter-reset: stp; }
.step {
  counter-increment: stp;
  padding: 30px 26px;
  border-left: 1px solid var(--line-2);
}
.step:first-child { border-left: 0; padding-left: 0; }
.step::before {
  content: "0" counter(stp);
  display: block;
  font-family: var(--serif);
  font-size: 30px;
  line-height: 1;
  color: var(--accent);
  margin-bottom: 12px;
}
.step h4 { font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--ink-3); margin: 0; line-height: 1.8; }

/* --------------------------------------------------------------------------
   特性列表
   -------------------------------------------------------------------------- */
.feature-list { list-style: none; }
.feature-list li {
  position: relative;
  padding: 0 0 0 22px;
  margin-bottom: 16px;
  font-size: 14.8px;
  line-height: 1.85;
  color: var(--ink-2);
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 11px;
  width: 8px; height: 8px;
  background: var(--accent);
}
.feature-list b {
  font-family: var(--serif);
  font-size: 16px;
  color: var(--ink);
  margin-right: 6px;
}

/* --------------------------------------------------------------------------
   FAQ
   -------------------------------------------------------------------------- */
.faq { border-top: 1px solid var(--line-2); }
.faq details { border-bottom: 1px solid var(--line-2); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 20px 34px 20px 0;
  font-family: var(--serif);
  font-size: 16.8px;
  font-weight: 700;
  color: var(--ink);
  position: relative;
  transition: color .2s ease;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 6px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--sans);
  font-size: 21px;
  font-weight: 400;
  color: var(--ink-3);
}
.faq summary:hover { color: var(--accent); }
.faq details[open] summary { color: var(--accent); }
.faq details[open] summary::after { content: "–"; color: var(--accent); }
.faq-body { padding: 0 34px 22px 0; }
.faq-body p { font-size: 14.6px; color: var(--ink-3); line-height: 1.9; margin: 0; }

/* --------------------------------------------------------------------------
   CTA 横幅：朱红实底
   -------------------------------------------------------------------------- */
.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  flex-wrap: wrap;
  background: var(--accent);
  color: #fff;
  padding: 40px 42px;
  border-radius: 2px;
}
.cta-band h2 { color: #fff; font-size: clamp(21px, 2.3vw, 28px); margin-bottom: 8px; }
.cta-band p { color: rgba(255, 255, 255, .84); font-size: 14.8px; margin: 0; }
.cta-band .actions { display: flex; flex-wrap: wrap; gap: 12px; }
.cta-band .btn-primary { background: var(--paper); color: var(--accent); border-color: var(--paper); }
.cta-band .btn-primary:hover { background: #fff; color: var(--accent-2); border-color: #fff; }
.cta-band .btn-ghost { border-color: rgba(255, 255, 255, .55); color: #fff; }
.cta-band .btn-ghost:hover { background: #fff; color: var(--accent); border-color: #fff; }

/* --------------------------------------------------------------------------
   内页页头
   -------------------------------------------------------------------------- */
.page-hero {
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
  padding: 52px 0 50px;
}
.page-hero h1 { font-size: clamp(28px, 3.4vw, 42px); margin-bottom: 14px; }
.page-hero p { font-size: 16px; color: var(--ink-3); max-width: 720px; margin: 0; }

.breadcrumb {
  font-size: 12.8px;
  color: var(--ink-3);
  margin-bottom: 18px;
  letter-spacing: .04em;
}
.breadcrumb a { color: var(--ink-3); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 8px; color: var(--line-2); }

/* --------------------------------------------------------------------------
   表格
   -------------------------------------------------------------------------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--paper); }
table { width: 100%; border-collapse: collapse; font-size: 14.2px; }
thead th {
  font-family: var(--serif);
  font-size: 15px;
  text-align: left;
  padding: 15px 20px;
  background: var(--paper-3);
  color: var(--ink);
  border-bottom: 1px solid var(--line-2);
  white-space: nowrap;
}
tbody td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  line-height: 1.75;
  vertical-align: top;
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--paper-2); }

/* --------------------------------------------------------------------------
   联系信息
   -------------------------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; }

.contact-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.contact-item:last-child { border-bottom: 0; }
.contact-item .ic {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(183, 65, 14, .2);
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--serif);
  font-size: 19px;
  border-radius: 2px;
}
.contact-item .lb {
  font-size: 12.4px;
  letter-spacing: .14em;
  color: var(--ink-3);
  margin-bottom: 3px;
}
.contact-item .vl {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.5;
  word-break: break-all;
}
.contact-item .vl a { color: var(--accent); }

.qr-box {
  display: inline-block;
  padding: 18px;
  border: 1px solid var(--line-2);
  background: var(--paper);
  border-radius: 2px;
}
.qr-box img { display: block; width: 168px; height: 168px; }
.qr-box p { margin: 12px 0 0; font-size: 13px; color: var(--ink-3); text-align: center; }

.code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  padding: 14px 18px;
  overflow-x: auto;
  color: var(--ink-2);
}

.acts { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }

/* --------------------------------------------------------------------------
   404
   -------------------------------------------------------------------------- */
.e404 { text-align: center; padding: 100px 0 110px; }
.e404 h1 { font-size: clamp(56px, 9vw, 108px); color: var(--accent); line-height: 1; margin-bottom: 18px; }
.e404 h2 { font-size: 24px; margin-bottom: 12px; }
.e404 p { color: var(--ink-3); margin-bottom: 28px; }

/* --------------------------------------------------------------------------
   页脚：深墨 + 细线栅格
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--dark);
  color: #9c9385;
  padding: 62px 0 26px;
  border-top: 3px solid var(--accent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 38px;
  border-bottom: 1px solid #3d372f;
}
.footer-brand { display: flex; align-items: center; gap: 13px; margin-bottom: 18px; }
.footer-brand img { width: 46px; height: 46px; border: 1px solid #3d372f; background: #fff; }
.footer-brand b {
  display: block;
  font-family: var(--serif);
  color: var(--paper);
  font-size: 18px;
  letter-spacing: .06em;
}
.footer-brand span { font-size: 12px; color: #7d7466; }

.footer-desc { font-size: 13.6px; line-height: 1.9; color: #9c9385; margin-bottom: 18px; }
.footer-qr { width: 108px; height: 108px; border: 1px solid #3d372f; }

.site-footer h4 {
  font-size: 15.5px;
  color: var(--paper);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid #3d372f;
}
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 9px; font-size: 13.6px; line-height: 1.7; }
.site-footer li a { color: #9c9385; }
.site-footer li a:hover { color: #e0864f; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 22px;
  font-size: 12.8px;
  color: #7d7466;
}
.footer-bottom .links { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.footer-bottom .links a { color: #7d7466; }
.footer-bottom .links a:hover { color: #e0864f; }

/* --------------------------------------------------------------------------
   悬浮工具条
   -------------------------------------------------------------------------- */
.float-bar {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 70;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-btn-group { position: relative; }
.float-btn {
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-2);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  cursor: pointer;
  border-radius: 2px;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.float-btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.float-pop {
  position: absolute;
  right: 58px;
  top: 50%;
  transform: translateY(-50%) translateX(8px);
  width: 194px;
  padding: 16px;
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 2px;
  box-shadow: 0 18px 40px -22px rgba(32, 28, 23, .4);
  opacity: 0;
  visibility: hidden;
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
  text-align: center;
}
.float-btn-group:hover .float-pop {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}
.float-pop img { width: 168px; height: 168px; display: block; margin: 0 auto 10px; }
.float-pop p { margin: 0; font-size: 12.6px; line-height: 1.7; color: var(--ink-3); }
.float-pop b { display: block; color: var(--ink); font-size: 13.6px; margin-bottom: 3px; }

.to-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 70;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line-2);
  background: var(--paper);
  color: var(--ink-2);
  font-size: 18px;
  cursor: pointer;
  border-radius: 2px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s ease, visibility .25s, background .2s ease, color .2s ease;
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* --------------------------------------------------------------------------
   移动端底栏
   -------------------------------------------------------------------------- */
.mobile-bar { display: none; }
.mobile-bar .inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  height: 56px;
}
.mobile-bar a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 11.5px;
  color: var(--ink-3);
  background: rgba(250, 247, 242, .96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--line-2);
}
.mobile-bar a i { font-style: normal; font-size: 16px; }
.mobile-bar a.primary { background: var(--accent); color: #fff; border-top-color: var(--accent); }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
  .nav { gap: 0; }
  .nav a { padding: 8px 9px; font-size: 14px; }
  .mode-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 980px) {
  .topbar-left { display: none; }
  .topbar .wrap { justify-content: center; }
  .topbar-right span:first-child, .topbar-right .dot { display: none; }

  .mobile-toggle { display: block; margin-left: auto; }
  .nav {
    position: fixed;
    left: 0; right: 0;
    top: var(--header-h);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line-2);
    padding: 8px 0;
    display: none;
  }
  body.nav-open .nav { display: flex; }
  .nav a { padding: 13px 32px; border-bottom: 1px solid var(--line); }
  .nav a:last-child { border-bottom: 0; }
  .nav a.is-active::after { left: 32px; right: auto; width: 22px; bottom: 8px; }
  .header-cta { display: none; }

  .hero-inner { grid-template-columns: 1fr; gap: 38px; padding-top: 52px; padding-bottom: 58px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .step:nth-child(3) { border-left: 0; padding-left: 0; }
  .step:nth-child(n+3) { border-top: 1px solid var(--line-2); }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
  .float-bar { display: none; }
  .mobile-bar { display: block; position: fixed; left: 0; right: 0; bottom: 0; z-index: 80; }
  body { padding-bottom: 56px; }
}

@media (max-width: 700px) {
  .wrap { padding: 0 20px; }
  .section { padding: 60px 0; }
  .section.tight { padding: 40px 0; }
  .grid-2, .grid-3, .grid-4, .mode-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step { border-left: 0; padding-left: 0; }
  .step:nth-child(n+2) { border-top: 1px solid var(--line-2); }
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: 0; }
  .stat:nth-child(n+2) { border-top: 1px solid var(--line); }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-band { padding: 30px 24px; }
  .contact-item { grid-template-columns: 1fr; gap: 10px; }
  .brand-text small { display: none; }
  .brand-text strong { font-size: 18px; }
  .brand-mark { width: 40px; height: 40px; }
  .hero h1 { letter-spacing: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* --------------------------------------------------------------------------
   旗下站点互链（跨站关联）
   -------------------------------------------------------------------------- */
.footer-related {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 26px;
  padding: 22px 0 26px; font-size: 13.6px;
}
.footer-related-label {
  font-family: var(--serif); color: var(--paper);
  font-size: 13.5px; letter-spacing: .12em;
}
.footer-related a {
  color: #9c9385; display: inline-flex; align-items: center; gap: 5px;
  padding-bottom: 2px; border-bottom: 1px solid #3d372f;
  transition: color .2s, border-color .2s;
}
.footer-related a:hover { color: #e0864f; border-bottom-color: #e0864f; }
.footer-related i { font-style: normal; font-size: 11px; opacity: .7; }