/* ============================================================
   侍颜官网全站样式 - v2.0 重构版（clean）
   设计参考：fawa1988.com 樊文花官网 — 简约、透气、大留白
   原则：2px 圆角 · 卡片无阴影 · 100px section 间距 · 纯白为主
   ============================================================ */

/* ---------- 1. CSS 变量 ---------- */
:root {
  /* 配色（spec §2.1） */
  --c-primary: #7FC6A4;
  --c-primary-dark: #5FA88A;
  --c-primary-deep: #3E8268;
  --c-primary-light: #ECF7F1;
  --c-primary-banner: linear-gradient(135deg, #F2FAF6 0%, #DFF1E7 100%);
  --c-bg: #FFFFFF;
  --c-bg-warm: #FAF8F4;
  --c-bg-alt: #F7F5F0;
  --c-text: #1F1F1F;
  --c-text-sub: #666666;
  --c-text-light: #999999;
  --c-border: #EEEEEE;
  --c-border-light: #F5F5F5;
  --c-accent-red: #D9534F;

  /* 尺寸（spec §2.2） */
  --radius: 2px;
  --radius-lg: 4px;
  --radius-pill: 999px;
  --container: 1240px;
  --section-py: 100px;

  /* 阴影：默认无，仅 hover 极浅 */
  --shadow-hover: 0 6px 20px rgba(31, 31, 31, 0.06);

  --transition: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* 字号（spec §2.3） */
  --fs-xs: 12px;
  --fs-sm: 14px;
  --fs-base: 16px;
  --fs-h3: 20px;
  --fs-h2: 40px;
  --fs-hero: 64px;
  --fs-data: 56px;
  --fs-hotline: 40px;

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-25: 100px;

  /* 兼容别名 */
  --c-white: #FFFFFF;
  --radius-sm: var(--radius);
  --radius-md: var(--radius);
}

/* ---------- 2. 全局重置 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  overflow-x: hidden;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: "PingFang SC", "Source Han Sans CN", "Microsoft YaHei",
    "Hiragino Sans GB", system-ui, -apple-system, Arial, sans-serif;
  font-size: var(--fs-base);
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-text);
  letter-spacing: 0.02em;
}

h1 { font-size: var(--fs-hero); font-weight: 800; }
h2 { font-size: var(--fs-h2); font-weight: 700; }
h3 { font-size: var(--fs-h3); font-weight: 600; }
h4 { font-size: var(--fs-base); font-weight: 600; }

p {
  margin: 0 0 1em;
  color: var(--c-text-sub);
}

a,
a:link,
a:visited,
a:active {
  color: var(--c-primary-deep);
  text-decoration: none;
  transition: color var(--transition);
  outline: none;
}

a:hover {
  color: var(--c-primary-dark);
}

a.btn,
a.btn:link,
a.btn:visited,
a.btn:active,
a.nav-item,
a.nav-item:link,
a.nav-item:visited,
a.nav-item:active,
.nav-menu a,
.nav-menu a:link,
.nav-menu a:visited,
.nav-menu a:active {
  color: inherit;
  text-decoration: none;
}

img, svg, video, table, picture {
  max-width: 100%;
  display: block;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

hr {
  border: none;
  border-top: 1px solid var(--c-border);
  margin: var(--space-8) 0;
}

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

input, textarea, select {
  font-family: inherit;
}

/* ---------- 3. 容器与工具类 ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--space-2); }
.mt-2 { margin-top: var(--space-4); }
.mt-3 { margin-top: var(--space-6); }
.mt-4 { margin-top: var(--space-8); }

.mb-1 { margin-bottom: var(--space-2); }
.mb-2 { margin-bottom: var(--space-4); }
.mb-3 { margin-bottom: var(--space-6); }
.mb-4 { margin-bottom: var(--space-8); }

/* ---------- 4. Info Bar 顶部窄条 ---------- */
.info-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 101;
  height: 36px;
  line-height: 36px;
  font-size: var(--fs-sm);
  color: var(--c-text-sub);
  background: transparent;
  transition: transform var(--transition), opacity var(--transition);
}

.info-bar.is-hidden {
  transform: translateY(-36px);
  opacity: 0;
  pointer-events: none;
}

.info-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.info-bar-left {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.info-bar-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.info-bar a {
  color: var(--c-text-light);
  font-size: var(--fs-sm);
  cursor: pointer;
}

.info-bar a:hover {
  color: var(--c-primary-deep);
}

.wx-qr-trigger {
  position: relative;
  cursor: pointer;
}

.wx-qr-tooltip {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 200;
  background: #fff;
  border-radius: 12px;
  padding: 12px 12px 10px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
  text-align: center;
  min-width: 150px;
  border: 1px solid rgba(127, 198, 164, 0.25);
}

.wx-qr-tooltip::before {
  content: '';
  position: absolute;
  top: -6px;
  right: 20px;
  width: 12px;
  height: 12px;
  background: #fff;
  transform: rotate(45deg);
  border-left: 1px solid rgba(127, 198, 164, 0.25);
  border-top: 1px solid rgba(127, 198, 164, 0.25);
}

.wx-qr-tooltip img {
  width: 126px;
  height: 126px;
  display: block;
  margin: 0 auto;
}

.wx-qr-tooltip p {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--c-primary-deep);
  font-weight: 500;
}

/* ---------- 5. 顶部导航栏 ---------- */
.top-bar {
  position: fixed;
  top: 36px;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--transition), box-shadow var(--transition),
    top var(--transition), border-color var(--transition);
}

.top-bar.is-scrolled {
  top: 0;
  background: var(--c-bg);
  border-bottom-color: var(--c-border-light);
  box-shadow: 0 1px 6px rgba(31, 31, 31, 0.04);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-primary-deep);
  letter-spacing: 0.06em;
}

.nav-logo span { font-size: 20px; font-weight: 700; letter-spacing: 0.08em; }

.nav-logo img {
  width: 42px;
  height: 42px;
}

.nav-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 12px;
  font-size: var(--fs-xs);
  color: var(--c-primary-deep);
  background: rgba(127, 198, 164, 0.14);
  border: 1px solid rgba(127, 198, 164, 0.35);
  border-radius: var(--radius-pill);
  font-weight: 500;
  white-space: nowrap;
  letter-spacing: 0.03em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-item {
  position: relative;
  display: inline-block;
  padding: var(--space-3) var(--space-4);
  font-size: 15px;
  color: var(--c-text);
  border-radius: var(--radius);
  transition: color var(--transition);
}

.nav-item:hover {
  color: var(--c-primary-deep);
}

.nav-item.active {
  color: var(--c-primary-deep);
  font-weight: 600;
}

.nav-item.active::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  transform: translateX(-50%);
  width: 18px;
  height: 2px;
  background: var(--c-primary);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: var(--radius);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-text);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

body.menu-open {
  overflow: hidden;
  height: 100vh;
}

/* ---------- 6. Hero 主视觉 ---------- */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  background: var(--c-primary-banner);
  padding: 128px 0 96px;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: var(--space-20);
  align-items: center;
}

.hero-content {
  max-width: 640px;
}

.hero-subtitle {
  display: inline-block;
  font-size: var(--fs-sm);
  color: var(--c-primary-deep);
  letter-spacing: 0.2em;
  font-weight: 500;
  margin-bottom: var(--space-5);
}

.hero-title {
  font-size: var(--fs-hero);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--c-primary-deep);
  margin-bottom: var(--space-5);
}

.hero-desc {
  font-size: var(--fs-base);
  color: var(--c-text-sub);
  line-height: 1.9;
  margin-bottom: var(--space-8);
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  width: 100%;
  height: 420px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(62, 130, 104, 0.12);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 7. 通用 Section ---------- */
.section {
  padding: var(--section-py) 0;
  background: var(--c-bg);
}

.section-tint {
  background: var(--c-bg-warm);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-12);
}

.section-label {
  display: inline-block;
  font-size: var(--fs-sm);
  color: var(--c-primary-deep);
  letter-spacing: 0.2em;
  font-weight: 500;
  margin-bottom: var(--space-3);
  text-transform: uppercase;
}

.section-title {
  font-size: var(--fs-h2);
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: var(--space-4);
  letter-spacing: 0.04em;
}

.section-title::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  margin: var(--space-5) auto 0;
  background: var(--c-primary);
}

.section-subtitle {
  font-size: var(--fs-base);
  color: var(--c-text-sub);
  line-height: 1.9;
  margin: var(--space-3) 0 0;
}

/* ---------- 8. 网格 ---------- */
.grid-2,
.grid-3,
.grid-4,
.grid-5 {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

/* ---------- 9. 按钮（spec §2.5） ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 13px 32px;
  font-size: var(--fs-base);
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  line-height: 1.4;
  letter-spacing: 0.03em;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition),
    border-color var(--transition);
}

.btn:hover {
  transform: none;
}

.btn-lg {
  padding: 16px 40px;
}

.btn-sm {
  padding: 8px 18px;
  min-height: 36px;
  font-size: var(--fs-sm);
}

.btn-primary {
  background: var(--c-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--c-primary-dark);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--c-primary-deep);
  border-color: var(--c-primary);
}

.btn-outline:hover {
  background: var(--c-primary);
  color: #fff;
}

.btn-pill {
  background: var(--c-primary-deep);
  color: #fff;
  padding: 10px 24px;
  min-height: 40px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: 500;
}

.btn-pill:hover {
  background: var(--c-primary-dark);
  color: #fff;
}

.btn-white {
  background: #fff;
  color: var(--c-primary-deep);
}

.btn-white:hover {
  background: var(--c-primary-light);
  color: var(--c-primary-deep);
}

.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.85);
}

.btn-outline-white:hover {
  background: #fff;
  color: var(--c-primary-deep);
}

/* ---------- 10. 核心数据 ---------- */
.section-stats {
  padding: var(--space-16) 0 var(--space-8);
  background: var(--c-bg);
}

.stats-grid,
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat-card {
  padding: var(--space-6) var(--space-8);
  text-align: center;
  background: transparent;
  border: none;
  border-left: 1px solid var(--c-border-light);
}

.stat-card:first-child {
  border-left: none;
}

.stat-num {
  display: inline-block;
  font-size: var(--fs-data);
  font-weight: 800;
  line-height: 1.1;
  color: var(--c-primary);
  letter-spacing: 0.02em;
}

.stat-unit {
  display: inline-block;
  font-size: 28px;
  font-weight: 800;
  color: var(--c-primary);
  margin-left: 2px;
}

.stat-label {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--c-text-sub);
  letter-spacing: 0.06em;
}

/* ---------- 11. 官方热线转化条 ---------- */
.hotline-bar {
  text-align: center;
  padding: var(--space-6) var(--space-6);
}

.hotline-label {
  font-size: var(--fs-sm);
  color: var(--c-text-light);
  letter-spacing: 0.2em;
  margin-bottom: var(--space-4);
}

.hotline-number {
  font-size: var(--fs-hotline);
  font-weight: 800;
  line-height: 1.2;
  color: var(--c-primary);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-4);
}

.hotline-number a {
  color: inherit;
}

.hotline-desc {
  font-size: var(--fs-sm);
  color: var(--c-text-light);
  letter-spacing: 0.06em;
  margin: 0;
}

.section-hotline {
  padding: var(--space-4) 0 var(--space-8);
}

/* ---------- 11b. 品牌承诺条 ---------- */
.section-promises {
  padding: var(--space-8) 0;
  background: var(--c-primary-light);
}

.promises-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.promise-item {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  border-left: 1px solid rgba(127, 198, 164, 0.25);
}

.promise-item:first-child {
  border-left: none;
}

.promise-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-bg);
  border-radius: var(--radius);
  font-size: 28px;
  border: 1px solid rgba(127, 198, 164, 0.3);
  overflow: hidden;
}

.promise-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.promise-title {
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--c-primary-deep);
  margin: 0 0 var(--space-2);
}

.promise-desc {
  font-size: var(--fs-sm);
  color: var(--c-text-sub);
  line-height: 1.6;
  margin: 0;
}

/* ---------- 12. 服务卡片 ---------- */
.service-card {
  height: 100%;
  padding: var(--space-10) var(--space-6);
  text-align: center;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: none;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.service-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-5);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-light);
  color: var(--c-primary-deep);
  border-radius: var(--radius);
  font-size: 32px;
  overflow: hidden;
}

.service-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-title {
  font-size: var(--fs-h3);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--c-text);
}

.service-desc {
  font-size: var(--fs-sm);
  color: var(--c-text-sub);
  line-height: 1.85;
  margin: 0;
}

/* ---------- 12b. 通用卡片 / 数据卡片 ---------- */
.card {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: var(--space-8);
  box-shadow: none;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.card-hover:hover,
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.data-card {
  height: 100%;
  text-align: center;
  padding: var(--space-8) var(--space-6);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: none;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.data-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.data-card .data-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-light);
  border-radius: var(--radius);
  font-size: 26px;
  overflow: hidden;
}

.data-card .data-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.data-card .data-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--c-primary-deep);
  margin-bottom: var(--space-2);
  letter-spacing: 0.02em;
}

.data-card .data-desc {
  font-size: var(--fs-sm);
  color: var(--c-text-sub);
  line-height: 1.7;
  margin: 0;
}

/* ---------- 13. 品牌优势 ---------- */
.advantage-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.advantage-item {
  height: 100%;
  padding: var(--space-8);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: none;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.advantage-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.advantage-icon {
  width: 52px;
  height: 52px;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-light);
  color: var(--c-primary-deep);
  border-radius: var(--radius);
  font-size: 24px;
  overflow: hidden;
}

.advantage-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.advantage-item h3 {
  font-size: var(--fs-h3);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.advantage-item p {
  font-size: var(--fs-sm);
  line-height: 1.85;
  margin: 0;
  color: var(--c-text-sub);
}

/* ---------- 14. 流量六步 ---------- */
.traffic-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.traffic-step {
  height: 100%;
  padding: var(--space-8);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: none;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.traffic-step:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.traffic-step .step-index {
  display: inline-block;
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-primary);
  opacity: 0.35;
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}

.traffic-step img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
}

.service-icon img {
  width: 100%;
  height: 48px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: 0px;
}

.service-card .service-icon img {
  width: 100%;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: 0px;
}

.traffic-step .service-icon {
  width: 48px;
  height: 48px;
  margin: 0 0 var(--space-3);
  font-size: 22px;
}

.traffic-step h4 {
  font-size: var(--fs-h3);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.traffic-step p {
  font-size: var(--fs-sm);
  line-height: 1.8;
  margin: 0;
  color: var(--c-text-sub);
}

/* ---------- 15. 加盟流程 ---------- */
.join-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  position: relative;
}

.join-steps::before {
  content: "";
  position: absolute;
  top: 32px;
  left: 12.5%;
  right: 12.5%;
  height: 1px;
  background: var(--c-border);
  z-index: 0;
}

.step-item {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-4);
}

.step-num {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-5);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  color: var(--c-primary-deep);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  transition: background var(--transition), color var(--transition),
    border-color var(--transition);
}

.step-item:hover .step-num {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
}

.step-content img {
  display: block;
  width: 100%;
  max-width: 200px;
  height: 130px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin: 0 auto var(--space-4);
}

.step-content h4 {
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.step-content p {
  font-size: var(--fs-sm);
  color: var(--c-text-light);
  line-height: 1.7;
  margin: 0;
}

/* ---------- 16. 关于页 ---------- */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.story-text .section-label {
  margin-bottom: var(--space-3);
}

.story-text h2 {
  font-size: var(--fs-h2);
  font-weight: 700;
  margin-bottom: var(--space-5);
  letter-spacing: 0.04em;
}

.story-text h2::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  margin: var(--space-5) 0 0;
  background: var(--c-primary);
}

.story-text p {
  font-size: var(--fs-base);
  line-height: 2;
  margin-bottom: var(--space-4);
  color: var(--c-text-sub);
}

.story-image {
  height: 420px;
  background: var(--c-primary-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.story-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 发展历程时间线 */
.timeline {
  max-width: 820px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
  border-left: 2px solid var(--c-primary-light);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-10);
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -49px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--c-primary);
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--c-primary);
}

.timeline-year {
  display: inline-block;
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--c-primary-deep);
  margin-bottom: var(--space-1);
}

.timeline-heading {
  font-size: var(--fs-h3);
  font-weight: 600;
  color: var(--c-text);
  margin: 0 0 var(--space-2);
}

.timeline-text {
  margin: 0;
  color: var(--c-text-sub);
}

/* 品牌价值观 */
.about-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.value-item {
  height: 100%;
  text-align: center;
  padding: var(--space-10) var(--space-6);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: none;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.value-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.value-icon {
  font-size: 36px;
  color: var(--c-primary-deep);
  margin-bottom: var(--space-4);
  display: flex;
  justify-content: center;
  align-items: center;
}

.value-icon img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: var(--radius);
}

.value-item h3 {
  font-size: var(--fs-h3);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.value-item p {
  font-size: var(--fs-sm);
  line-height: 1.8;
  margin: 0;
  color: var(--c-text-light);
}

/* ---------- 17. 服务页特性行 ---------- */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.feature-text .service-icon {
  margin: 0 0 var(--space-5);
}

.feature-text h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.feature-text > p {
  font-size: var(--fs-base);
  line-height: 1.9;
  margin-bottom: var(--space-5);
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  font-size: var(--fs-base);
  color: var(--c-text);
}

.check-list .check {
  color: var(--c-primary-deep);
  font-weight: 700;
  flex-shrink: 0;
}

.feature-stat {
  padding: var(--space-12) var(--space-8);
  text-align: center;
  background: var(--c-bg-warm);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
}

.section-tint .feature-stat {
  background: var(--c-bg);
}

.feature-stat .stat-emoji {
  font-size: 56px;
  line-height: 1;
  margin-bottom: var(--space-4);
}

.feature-stat .stat-emoji img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  border-radius: var(--radius);
}

.feature-stat h3 {
  font-size: var(--fs-h3);
  font-weight: 600;
  color: var(--c-primary-deep);
  margin-bottom: var(--space-4);
}

.feature-stat p {
  font-size: 15px;
  line-height: 2;
  margin: 0;
  color: var(--c-text-sub);
}

.feature-stat strong {
  color: var(--c-primary-deep);
  font-weight: 700;
}

/* ---------- 18. 联系页 ---------- */
.contact-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.contact-item {
  height: 100%;
  text-align: center;
  padding: var(--space-10) var(--space-6);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: none;
  transition: border-color var(--transition), transform var(--transition-slow),
    box-shadow var(--transition-slow);
}

.contact-item:hover {
  border-color: var(--c-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.contact-icon {
  font-size: 28px;
  color: var(--c-primary-deep);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-icon img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: var(--radius);
}

.contact-item h4 {
  font-size: var(--fs-base);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.contact-item p {
  font-size: var(--fs-sm);
  margin: 0;
  color: var(--c-text-sub);
}

.contact-sub {
  font-size: var(--fs-xs);
  margin-top: var(--space-1);
  color: var(--c-text-light);
}

.map-placeholder {
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  text-align: center;
  background: var(--c-bg-warm);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
}

.map-placeholder .map-icon {
  font-size: 52px;
  line-height: 1;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-placeholder .map-icon img {
  width: 56px;
  height: 56px;
  object-fit: contain;
  border-radius: var(--radius);
}

.map-placeholder h4 {
  font-size: var(--fs-h3);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.map-placeholder p {
  font-size: var(--fs-sm);
  color: var(--c-text-light);
  margin: 0 0 var(--space-2);
}

/* ---------- 19. 表单 ---------- */
.contact-form {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-12);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: none;
}

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--c-text);
  letter-spacing: 0.02em;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 14px;
  font-size: var(--fs-base);
  color: var(--c-text);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--c-text-light);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--c-primary);
  background: var(--c-primary-light);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.7;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' stroke='%23999' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-input.is-invalid,
.form-textarea.is-invalid,
.form-select.is-invalid {
  border-color: #e74c3c;
  background-color: #fef5f5;
}

.form-input.is-invalid:focus,
.form-textarea.is-invalid:focus {
  border-color: #e74c3c;
  box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.15);
}

.form-error-msg {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: #e74c3c;
  line-height: 1.4;
}

/* ---------- 20. 内页通用 Banner ---------- */
.page-banner {
  background: var(--c-primary-banner);
  padding: 160px 0 var(--space-20);
  text-align: center;
}

.page-banner .breadcrumb {
  font-size: var(--fs-sm);
  color: var(--c-text-light);
  letter-spacing: 0.03em;
  margin-bottom: var(--space-4);
}

.page-banner .breadcrumb a {
  color: var(--c-text-sub);
}

.page-banner .breadcrumb a:hover {
  color: var(--c-primary-deep);
}

.page-title {
  font-size: var(--fs-h2);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-primary-deep);
  margin-bottom: var(--space-4);
}

.page-subtitle {
  font-size: var(--fs-base);
  color: var(--c-text-sub);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
  letter-spacing: 0.03em;
}

/* ---------- 21. CTA 招商横幅（全宽绿底） ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
  padding: var(--space-25) var(--space-6);
  text-align: center;
}

.cta-banner h2 {
  color: #fff;
  font-size: var(--fs-h2);
  font-weight: 700;
  margin-bottom: var(--space-4);
  letter-spacing: 0.06em;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.92);
  font-size: var(--fs-base);
  max-width: 620px;
  margin: 0 auto var(--space-10);
  line-height: 1.8;
}

.cta-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- 22. 资讯列表页 ---------- */
.news-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-10);
  align-items: start;
}

.news-sidebar {
  position: sticky;
  top: 120px;
}

.news-sidebar .sidebar-title {
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--c-border);
}

.category-filter {
  display: block;
  width: 100%;
  padding: 12px 16px;
  margin-bottom: var(--space-2);
  font-size: var(--fs-sm);
  text-align: left;
  color: var(--c-text-sub);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.category-filter:hover {
  color: var(--c-primary-deep);
  background: var(--c-bg);
  border-color: var(--c-border);
}

.category-filter.active {
  color: #fff;
  background: var(--c-primary);
  border-color: var(--c-primary);
  font-weight: 500;
}

.news-list {
  display: grid;
  gap: var(--space-6);
}

/* ---------- 23. 资讯卡片（main.js 渲染） ---------- */
.article-card {
  display: flex;
  flex-direction: column;
  height: auto;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: none;
  color: inherit;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.article-card-cover {
  position: relative;
  overflow: hidden;
  background: var(--c-primary-light);
}

.article-card-cover img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-card-cover img {
  transform: scale(1.04);
}

.article-card-cover.img-fallback {
  background: linear-gradient(135deg, #e8f5ef 0%, #d4ebe0 50%, #c2e0d0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-card-cover.img-fallback::after {
  content: '📰';
  font-size: 56px;
  opacity: 0.35;
}

.article-card-category {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 3px 10px;
  background: rgba(62, 130, 104, 0.88);
  color: #fff;
  font-size: var(--fs-xs);
  border-radius: var(--radius);
  letter-spacing: 0.04em;
}

.article-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-5);
}

.article-card-title {
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-text);
  margin-bottom: var(--space-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}

.article-card:hover .article-card-title {
  color: var(--c-primary-deep);
}

.article-card-summary {
  flex: 1;
  font-size: var(--fs-sm);
  color: var(--c-text-sub);
  line-height: 1.7;
  margin-bottom: var(--space-4);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-meta {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  padding-top: var(--space-3);
  border-top: 1px solid var(--c-border-light);
  font-size: var(--fs-xs);
  color: var(--c-text-light);
}

/* 首页最新动态：左宽右窄瀑布流布局 */
.latest-news {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
}

.latest-news .news-col-left {
  flex: 1.4;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.latest-news .news-col-right {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* 资讯列表页：横向卡片（左图右文） */
.news-list .article-card {
  display: grid;
  grid-template-columns: 280px 1fr;
}

.news-list .article-card-cover {
  height: 100%;
  min-height: 190px;
  aspect-ratio: auto;
}

/* ---------- 24. 顾客案例卡片（main.js 渲染） ---------- */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.case-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: none;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.case-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.case-card-cover {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-primary-light);
}

.case-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.case-card:hover .case-card-cover img {
  transform: scale(1.04);
}

.case-card-cover.img-fallback {
  background: linear-gradient(135deg, #e8f5ef 0%, #d4ebe0 50%, #c2e0d0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-card-cover.img-fallback::before {
  content: attr(data-fallback-icon);
  font-size: 64px;
  opacity: 0.6;
}

.case-card-cover--client.img-fallback {
  background: linear-gradient(135deg, #e8f5ef 0%, #c8e8d8 100%);
}

.case-card-cover--partner.img-fallback {
  background: linear-gradient(135deg, #eef7f2 0%, #d0e8d8 100%);
}

.case-card-cover--client.img-fallback::after {
  content: '💆';
  font-size: 72px;
  opacity: 0.35;
}

.case-card-cover--partner.img-fallback::after {
  content: '✨';
  font-size: 72px;
  opacity: 0.35;
}

.case-card-cover:not(.img-fallback)::after {
  content: '';
}

.case-card-type {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 3px 10px;
  background: rgba(62, 130, 104, 0.88);
  color: #fff;
  font-size: var(--fs-xs);
  border-radius: var(--radius);
}

.case-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-5);
}

.case-card-user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.case-card-avatar {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-light);
  color: var(--c-primary-deep);
  border-radius: 50%;
  font-size: var(--fs-sm);
  font-weight: 700;
}

.case-card-name {
  font-size: var(--fs-sm);
  color: var(--c-text-sub);
}

.case-card-title {
  font-size: var(--fs-h3);
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: var(--space-2);
}

.case-card-summary {
  flex: 1;
  font-size: var(--fs-sm);
  color: var(--c-text-sub);
  line-height: 1.75;
  margin-bottom: var(--space-3);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.case-card-rating {
  font-size: 16px;
  letter-spacing: 2px;
  margin-bottom: var(--space-3);
}

.star {
  color: var(--c-border);
}

.star.active {
  color: #F5B84B;
}

.case-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.case-tag {
  padding: 2px 10px;
  font-size: var(--fs-xs);
  color: var(--c-text-sub);
  background: var(--c-bg-warm);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius-pill);
}

/* ---------- 25. 资讯详情（main.js 渲染） ---------- */
.article-detail {
  max-width: 800px;
  margin: 0 auto;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: var(--space-12);
  box-shadow: none;
}

.article-header {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--c-border);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--c-text-light);
  margin-bottom: var(--space-4);
}

.article-category {
  display: inline-block;
  padding: 3px 12px;
  background: var(--c-primary);
  color: #fff;
  border-radius: var(--radius);
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
}

.article-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-text);
  margin-bottom: var(--space-4);
}

.article-summary {
  font-size: var(--fs-base);
  color: var(--c-text-sub);
  line-height: 1.8;
  margin: 0;
  padding: var(--space-4) var(--space-5);
  background: var(--c-bg-warm);
  border-left: 3px solid var(--c-primary);
  border-radius: var(--radius);
}

.article-cover {
  margin-bottom: var(--space-8);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.article-cover img {
  width: 100%;
  height: auto;
}

.article-body {
  font-size: var(--fs-base);
  line-height: 2;
  color: var(--c-text);
}

.article-body p {
  font-size: var(--fs-base);
  line-height: 2;
  color: var(--c-text-sub);
  margin-bottom: var(--space-5);
}

.article-body h2,
.article-body h3 {
  color: var(--c-text);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.article-body img {
  border-radius: var(--radius-lg);
  margin: var(--space-5) 0;
}

.article-footer {
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--c-border);
}

.article-rating {
  margin-bottom: var(--space-4);
  font-size: 20px;
  letter-spacing: 3px;
}

.article-rating .star:not(.active) {
  color: var(--c-border);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.tag {
  display: inline-block;
  padding: 3px 12px;
  font-size: var(--fs-xs);
  border-radius: var(--radius);
  background: var(--c-bg-warm);
  color: var(--c-text-sub);
  letter-spacing: 0.03em;
}

.article-nav {
  display: flex;
  justify-content: center;
}

.btn-back {
  padding: 10px 28px;
  background: transparent;
  color: var(--c-primary-deep);
  border: 1px solid var(--c-primary);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  font-weight: 600;
  transition: all var(--transition);
}

.btn-back:hover {
  background: var(--c-primary);
  color: #fff;
}

/* 上一篇 / 下一篇 */
.article-nav-links {
  max-width: 800px;
  margin: var(--space-6) auto 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.article-nav-link {
  display: block;
  padding: var(--space-5);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: none;
  transition: border-color var(--transition);
}

.article-nav-link:hover {
  border-color: var(--c-primary);
}

.nav-label {
  font-size: var(--fs-xs);
  color: var(--c-text-light);
  margin-bottom: var(--space-2);
}

.nav-title {
  font-size: 15px;
  color: var(--c-text);
  font-weight: 500;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 相关推荐 */
.related-section {
  max-width: 800px;
  margin: 0 auto;
}

.related-title {
  font-size: var(--fs-h3);
  font-weight: 600;
  margin-bottom: var(--space-5);
  padding-left: var(--space-3);
  border-left: 3px solid var(--c-primary);
  line-height: 1.4;
}

.related-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.related-item {
  display: block;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: none;
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.related-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.related-item img {
  width: 100%;
  height: 130px;
  object-fit: cover;
}

.related-title-text {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-sm);
  color: var(--c-text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 26. FAQ ---------- */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: var(--space-4);
}

.faq-list .card {
  padding: var(--space-6);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: none;
}

.faq-list h4 {
  margin-bottom: var(--space-2);
  color: var(--c-primary-deep);
}

.faq-list p {
  margin: 0;
  color: var(--c-text-sub);
  line-height: 1.8;
}

/* ---------- 27. 页脚 ---------- */
.footer {
  background: #2A3330;
  color: #B8C0BC;
  padding: var(--space-16) 0 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer h4 {
  color: #fff;
  font-size: var(--fs-base);
  margin-bottom: var(--space-4);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer-brand img {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.footer-brand .brand-name {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.08em;
}

.footer-brand-desc,
.footer-brand p {
  font-size: var(--fs-sm);
  color: #9CA5A1;
  line-height: 1.9;
  margin: 0 0 var(--space-5);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a,
.footer-links a:visited {
  color: #9CA5A1;
  font-size: var(--fs-sm);
  line-height: 1.6;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--c-primary);
}

.footer-qrcode {
  width: 110px;
  height: 110px;
  margin-top: var(--space-4);
  background: #fff;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.footer-qrcode img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  color: var(--c-primary);
  border-radius: 50%;
  font-size: var(--fs-sm);
  transition: background var(--transition);
}

.footer-social a:hover {
  background: rgba(127, 198, 164, 0.22);
}

.footer-bottom {
  padding: var(--space-5) 0;
  text-align: center;
  font-size: var(--fs-xs);
  color: #6E7974;
  letter-spacing: 0.03em;
}

.footer-bottom p {
  margin: 0;
  color: #6E7974;
}

/* ---------- 28. 反馈提示 / 空状态 ---------- */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 24px;
  border-radius: var(--radius);
  color: #fff;
  font-size: var(--fs-sm);
  z-index: 9999;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.empty-tip,
.loading-tip {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--c-text-light);
  font-size: 15px;
}

.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  color: var(--c-text-light);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  font-size: 10px;
  font-weight: 600;
  background: var(--c-accent-red);
  color: #fff;
  border-radius: 9px;
}

/* ---------- 29. 404 页 ---------- */
.notfound {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--c-primary-banner);
  padding: var(--space-10) var(--space-6);
}

.notfound-code {
  font-size: 96px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-primary);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-4);
}

.notfound h1 {
  font-size: 24px;
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: var(--space-3);
}

.notfound p {
  font-size: 15px;
  color: var(--c-text-light);
  line-height: 1.8;
  max-width: 420px;
  margin: 0 auto var(--space-8);
}

.notfound .brand-sign {
  margin-top: var(--space-12);
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--c-primary-deep);
  letter-spacing: 0.2em;
}

/* ============================================================
   响应式（spec 4 段断点）
   ============================================================ */

/* ---------- ≥1024px 桌面 ---------- */
@media (min-width: 1024px) {
  .grid-5 { grid-template-columns: repeat(5, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- 768 ~ 1023px 平板 ---------- */
@media (max-width: 1023px) and (min-width: 768px) {
  :root {
    --fs-h2: 32px;
    --fs-hero: 48px;
    --fs-data: 40px;
    --fs-hotline: 32px;
  }

  .hero { min-height: 560px; padding-top: 116px; }
  .hero .container { grid-template-columns: 1fr; gap: var(--space-10); }
  .hero-visual { display: none; }
  .hero-desc { max-width: 100%; }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }

  .stats-grid,
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .stat-card { border-left: none; }

  .promises-grid { grid-template-columns: repeat(3, 1fr); }
  .promise-item { border-left: 1px solid rgba(127, 198, 164, 0.25); }
  .promise-item:first-child { border-left: none; }

  .traffic-steps { grid-template-columns: repeat(2, 1fr); }
  .advantage-list { grid-template-columns: repeat(2, 1fr); }
  .about-values { grid-template-columns: repeat(2, 1fr); }
  .join-steps { grid-template-columns: repeat(2, 1fr); }
  .join-steps::before { display: none; }

  .about-story { grid-template-columns: 1fr; gap: var(--space-8); }
  .story-image { height: 320px; }

  .feature-row { grid-template-columns: 1fr; gap: var(--space-8); }

  .news-layout { grid-template-columns: 1fr; }
  .news-sidebar { position: static; }
  .category-filter { display: inline-block; width: auto; margin-right: var(--space-2); }

  .latest-news { flex-direction: column; }
  .latest-news .news-col-left,
  .latest-news .news-col-right { flex: none; width: 100%; }

  .news-list .article-card { grid-template-columns: 220px 1fr; }

  .contact-info { grid-template-columns: 1fr; }

  .related-list { grid-template-columns: repeat(2, 1fr); }

  .footer-content { grid-template-columns: 1fr 1fr; }

  .section { padding: var(--space-20) 0; }
  .page-banner { padding: 140px 0 60px; }
}

/* ---------- 421 ~ 767px 小平板/大手机 ---------- */
@media (max-width: 767px) and (min-width: 421px) {
  :root {
    --fs-h2: 26px;
    --fs-h3: 18px;
    --fs-hero: 36px;
    --fs-data: 32px;
    --fs-hotline: 28px;
  }

  .info-bar { display: none; }

  .top-bar,
  .top-bar.is-scrolled {
    top: 0;
    background: var(--c-bg);
    border-bottom-color: var(--c-border-light);
    box-shadow: 0 1px 6px rgba(31, 31, 31, 0.04);
  }

  .nav { height: 64px; padding: 0 var(--space-4); }
  .nav-badge { display: none; }
  .nav-right .btn-pill { display: none; }

  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--c-bg-warm);
    padding: var(--space-6) var(--space-5) var(--space-8);
    z-index: 999;
    overflow-y: auto;
  }

  .nav-menu.active { display: flex; }

  .nav-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px var(--space-3) 15px var(--space-4);
    font-size: 17px;
    font-weight: 500;
    color: var(--c-text);
    border-bottom: 1px solid rgba(127, 198, 164, 0.18);
    text-align: left;
    letter-spacing: 0.03em;
    border-radius: var(--radius);
    transition: background var(--transition), color var(--transition);
  }

  .nav-item::after {
    content: "›";
    font-size: 22px;
    font-weight: 300;
    color: var(--c-primary);
    flex-shrink: 0;
    margin-left: var(--space-2);
    line-height: 1;
  }

  .nav-item:hover,
  .nav-item:focus {
    color: var(--c-primary-deep);
    background: rgba(127, 198, 164, 0.08);
  }

  .nav-item:hover::after,
  .nav-item:focus::after {
    color: var(--c-primary-deep);
  }

  .nav-item.active {
    color: var(--c-primary-deep);
    font-weight: 600;
    background: rgba(127, 198, 164, 0.12);
    padding-left: var(--space-5);
  }

  .nav-item.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--c-primary-deep);
    border-radius: 0 2px 2px 0;
  }

  .nav-item.active::after {
    display: inline;
    color: var(--c-primary-deep);
  }

  .nav-menu li:last-child .nav-item { border-bottom: none; }

  .nav-toggle { display: flex; margin-left: auto; }

  .nav-toggle.active span {
    background: var(--c-primary-deep);
  }

  .hero { min-height: 520px; padding: 88px 0 var(--space-12); }
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero-subtitle { font-size: var(--fs-xs); margin-bottom: var(--space-4); }
  .hero-title { margin-bottom: var(--space-4); }
  .hero-desc { font-size: var(--fs-sm); margin-bottom: var(--space-6); }
  .hero-actions { gap: var(--space-3); }
  .hero-actions .btn { padding: 12px 24px; font-size: var(--fs-sm); }

  .section { padding: 60px 0; }
  .section-header { margin-bottom: var(--space-8); }
  .section-title { margin-bottom: var(--space-3); }
  .section-title::after { margin-top: var(--space-4); }
  .section-subtitle { font-size: var(--fs-sm); }

  .grid-4, .grid-5, .grid-3, .grid-2,
  .stats-grid, .hero-stats,
  .traffic-steps, .advantage-list, .about-values,
  .cases-grid, .contact-info, .related-list {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }
  .grid-5 { grid-template-columns: 1fr; }

  .traffic-step { text-align: center; }
  .traffic-step .step-index { display: block; margin: 0 auto var(--space-4); }
  .traffic-step img:not(.service-icon img) { display: block; max-width: 280px; width: 100%; height: auto; object-fit: contain; margin: 0 auto var(--space-5); }
  .traffic-step .service-icon { margin: 0 auto var(--space-3); }

  .advantage-item { text-align: center; }
  .advantage-item .advantage-icon { margin: 0 auto var(--space-4); }

  .stat-card { border-left: none; padding: 12px 10px; }

  .join-steps { grid-template-columns: 1fr; gap: var(--space-4); }
  .join-steps::before { display: none; }

  .about-story { grid-template-columns: 1fr; gap: var(--space-6); }
  .story-image { height: 240px; }
  .story-text h2 { font-size: 24px; }

  .feature-row { grid-template-columns: 1fr; gap: var(--space-6); }

  .news-layout { grid-template-columns: 1fr; }
  .news-sidebar { position: static; }
  .news-sidebar .sidebar-title { display: none; }
  .category-filter {
    display: inline-block;
    width: auto;
    padding: 8px 16px;
    margin: 0 var(--space-2) var(--space-2) 0;
    border: 1px solid var(--c-border);
    background: var(--c-bg);
  }

  .latest-news { flex-direction: column; }
  .latest-news .news-col-left,
  .latest-news .news-col-right { flex: none; width: 100%; }

  .news-list .article-card { grid-template-columns: 1fr; }
  .news-list .article-card-cover { min-height: 190px; }

  .article-detail { padding: var(--space-6) var(--space-5); }
  .article-title { font-size: 24px; }
  .article-nav-links { grid-template-columns: 1fr; }
  .related-section { margin-top: var(--space-8); }

  .contact-form { padding: var(--space-6); }

  .cta-banner { padding: 60px var(--space-4); }
  .cta-banner h2 { font-size: 24px; }
  .cta-actions { flex-direction: column; align-items: stretch; }

  .page-banner { padding: 110px 0 50px; }
  .page-title { font-size: 26px; }

  .footer-content { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer {
    padding-top: var(--space-12);
    background: var(--c-bg-warm);
    color: var(--c-text-sub);
  }
  .footer-content { border-bottom-color: rgba(127, 198, 164, 0.2); }
  .footer h4 { color: var(--c-primary-deep); }
  .footer-brand .brand-name { color: var(--c-primary-deep); }
  .footer-brand-desc,
  .footer-brand p { color: var(--c-text-sub); }
  .footer-links a,
  .footer-links a:visited { color: var(--c-text-sub); }
  .footer-links a:hover { color: var(--c-primary-deep); }
  .footer-social a {
    background: rgba(127, 198, 164, 0.12);
    color: var(--c-primary-deep);
  }
  .footer-social a:hover { background: rgba(127, 198, 164, 0.25); }
  .footer-qrcode { background: #fff; }
  .footer-bottom { color: var(--c-text-light); }
  .footer-bottom p { color: var(--c-text-light); }
}

/* ---------- ≤420px 移动端 ---------- */
@media (max-width: 420px) {
  :root {
    --fs-h2: 22px;
    --fs-h3: 17px;
    --fs-hero: 30px;
    --fs-data: 28px;
    --fs-hotline: 24px;
    --fs-base: 14px;
  }

  body { font-size: var(--fs-base); line-height: 1.7; }

  .container { padding: 0 var(--space-4); }

  .info-bar { display: none; }

  .top-bar,
  .top-bar.is-scrolled {
    top: 0;
    background: var(--c-bg);
    border-bottom-color: var(--c-border-light);
    box-shadow: 0 1px 6px rgba(31, 31, 31, 0.04);
  }

  .nav { height: 56px; padding: 0 var(--space-4); }
  .nav-logo { font-size: 17px; }
  .nav-logo img { width: 32px; height: 32px; }
  .nav-badge { display: none; }
  .nav-right .btn-pill { display: none; }

  .nav-menu {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    bottom: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--c-bg-warm);
    padding: var(--space-5) var(--space-4) var(--space-7);
    z-index: 999;
    overflow-y: auto;
  }

  .nav-menu.active { display: flex; }

  .nav-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px var(--space-3) 14px var(--space-4);
    font-size: 16px;
    font-weight: 500;
    color: var(--c-text);
    border-bottom: 1px solid rgba(127, 198, 164, 0.18);
    text-align: left;
    letter-spacing: 0.03em;
    border-radius: var(--radius);
    transition: background var(--transition), color var(--transition);
  }

  .nav-item::after {
    content: "›";
    font-size: 20px;
    font-weight: 300;
    color: var(--c-primary);
    flex-shrink: 0;
    margin-left: var(--space-2);
    line-height: 1;
  }

  .nav-item:hover,
  .nav-item:focus {
    color: var(--c-primary-deep);
    background: rgba(127, 198, 164, 0.08);
  }

  .nav-item:hover::after,
  .nav-item:focus::after {
    color: var(--c-primary-deep);
  }

  .nav-item.active {
    color: var(--c-primary-deep);
    font-weight: 600;
    background: rgba(127, 198, 164, 0.12);
    padding-left: var(--space-4);
  }

  .nav-item.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 18px;
    background: var(--c-primary-deep);
    border-radius: 0 2px 2px 0;
  }

  .nav-item.active::after {
    display: inline;
    color: var(--c-primary-deep);
  }

  .nav-menu li:last-child .nav-item { border-bottom: none; }

  .nav-toggle { display: flex; width: 36px; height: 36px; margin-left: auto; }

  .nav-toggle.active span {
    background: var(--c-primary-deep);
  }

  .hero { min-height: 480px; padding: 80px 0 var(--space-10); }
  .hero .container { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero-subtitle { font-size: 11px; letter-spacing: 0.16em; margin-bottom: var(--space-3); }
  .hero-title { letter-spacing: 0.01em; margin-bottom: var(--space-3); }
  .hero-desc { font-size: 13px; line-height: 1.8; margin-bottom: var(--space-5); }
  .hero-actions { flex-direction: column; align-items: stretch; gap: var(--space-3); }
  .hero-actions .btn { width: 100%; padding: 12px 20px; font-size: var(--fs-sm); }

  .section { padding: 50px 0; }
  .section-header { margin-bottom: var(--space-8); }
  .section-label { font-size: var(--fs-xs); letter-spacing: 0.16em; }
  .section-title { margin-bottom: var(--space-3); }
  .section-title::after { margin-top: var(--space-3); }
  .section-subtitle { font-size: 13px; line-height: 1.8; }

  .grid-4, .grid-5, .grid-3, .grid-2,
  .stats-grid, .hero-stats,
  .traffic-steps, .advantage-list, .about-values,
  .cases-grid, .contact-info, .related-list,
  .promises-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .grid-5 { grid-template-columns: 1fr; }

  .promise-item { border-left: none; border-top: 1px solid rgba(127, 198, 164, 0.25); }
  .promise-item:first-child { border-top: none; }

  .stat-card { border-left: none; padding: 10px 8px; }

  .hotline-bar { padding: var(--space-10) var(--space-4); }
  .hotline-label { font-size: var(--fs-xs); letter-spacing: 0.16em; }
  .hotline-desc { font-size: var(--fs-xs); letter-spacing: 0.03em; }

  .service-card { padding: var(--space-8) var(--space-5); }
  .service-icon { width: 64px; height: 64px; font-size: 26px; }

  .join-steps { grid-template-columns: 1fr; gap: var(--space-4); }
  .join-steps::before { display: none; }
  .step-num { width: 56px; height: 56px; font-size: 18px; }

  .traffic-step { padding: var(--space-6) var(--space-5); text-align: center; }
  .traffic-step .step-index { display: block; margin: 0 auto var(--space-4); }
  .traffic-step img:not(.service-icon img) { display: block; max-width: 260px; width: 100%; height: auto; object-fit: contain; margin: 0 auto var(--space-5); }
  .traffic-step .service-icon { margin: 0 auto var(--space-3); }

  .advantage-item { text-align: center; }
  .advantage-item .advantage-icon { margin: 0 auto var(--space-4); }

  .about-story { grid-template-columns: 1fr; gap: var(--space-5); }
  .story-image { height: 200px; }
  .story-text h2 { font-size: 22px; margin-bottom: var(--space-4); }
  .story-text p { font-size: var(--fs-sm); line-height: 1.9; }

  .timeline { padding-left: 28px; }
  .timeline-item::before { left: -36px; }

  .feature-row { grid-template-columns: 1fr; gap: var(--space-5); }
  .feature-text h2 { font-size: 22px; }
  .feature-stat { padding: var(--space-8) var(--space-6); }

  .news-layout { grid-template-columns: 1fr; gap: var(--space-6); }
  .news-sidebar { position: static; }
  .news-sidebar .sidebar-title { display: none; }
  .category-filter {
    display: inline-block;
    width: auto;
    padding: 7px 14px;
    margin: 0 var(--space-2) var(--space-2) 0;
    font-size: 13px;
    border: 1px solid var(--c-border);
    background: var(--c-bg);
  }

  .latest-news { flex-direction: column; }
  .latest-news .news-col-left,
  .latest-news .news-col-right { flex: none; width: 100%; }

  .news-list .article-card { grid-template-columns: 1fr; }
  .news-list .article-card-cover { min-height: 170px; }

  .article-card-body { padding: var(--space-4); }
  .article-card-title { font-size: var(--fs-h3); }
  .article-card-summary { font-size: 13px; }

  .case-card-body { padding: var(--space-4); }

  .article-detail { padding: var(--space-5) var(--space-4); }
  .article-title { font-size: 20px; }
  .article-meta { gap: var(--space-2); font-size: var(--fs-xs); }
  .article-summary { font-size: var(--fs-sm); }
  .article-body,
  .article-body p { font-size: var(--fs-sm); line-height: 1.9; }
  .article-nav-links { grid-template-columns: 1fr; }
  .related-list { gap: var(--space-3); }
  .related-title-text { font-size: 13px; }

  .contact-form { padding: var(--space-5); }
  .form-input, .form-textarea, .form-select { font-size: 16px; padding: 10px 12px; }

  .cta-banner { padding: 50px var(--space-4); }
  .cta-banner h2 { font-size: 22px; margin-bottom: var(--space-3); }
  .cta-banner p { font-size: 13px; margin-bottom: var(--space-6); }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { width: 100%; }

  .page-banner { padding: 96px 0 40px; }
  .page-title { font-size: 22px; margin-bottom: var(--space-3); }
  .breadcrumb { font-size: var(--fs-xs); }
  .page-subtitle { font-size: var(--fs-sm); }

  .btn { min-height: 48px; padding: 11px 24px; font-size: var(--fs-sm); }
  .btn-lg { min-height: 48px; padding: 12px 28px; }

  .footer {
    padding-top: var(--space-12);
    background: var(--c-bg-warm);
    color: var(--c-text-sub);
  }
  .footer h4 { font-size: 15px; margin-bottom: var(--space-3); color: var(--c-primary-deep); }
  .footer-links { gap: var(--space-2); }
  .footer-links a { font-size: 13px; color: var(--c-text-sub); }
  .footer-links a:hover { color: var(--c-primary-deep); }
  .footer-content { grid-template-columns: 1fr; gap: var(--space-6); border-bottom-color: rgba(127, 198, 164, 0.2); }
  .footer-brand .brand-name { color: var(--c-primary-deep); }
  .footer-brand-desc,
  .footer-brand p { color: var(--c-text-sub); }
  .footer-social a {
    background: rgba(127, 198, 164, 0.12);
    color: var(--c-primary-deep);
  }
  .footer-social a:hover { background: rgba(127, 198, 164, 0.25); }
  .footer-qrcode { width: 88px; height: 88px; background: #fff; }
  .footer-bottom { padding: var(--space-4) 0; font-size: 11px; color: var(--c-text-light); }
  .footer-bottom p { color: var(--c-text-light); }

  .notfound-code { font-size: 72px; }
  .notfound h1 { font-size: 20px; }
  .notfound p { font-size: 13px; }
}

/* ---------- ≤320px 极小屏 ---------- */
@media (max-width: 320px) {
  :root {
    --fs-h2: 20px;
    --fs-hero: 26px;
    --fs-data: 24px;
    --fs-hotline: 22px;
  }

  .container { padding: 0 var(--space-3); }
  .nav { padding: 0 var(--space-3); }
  .nav-logo { font-size: 15px; }
  .nav-logo img { width: 28px; height: 28px; }

  .section { padding: 40px 0; }
  .btn { padding: 10px 16px; font-size: 13px; }
}