/* ============================================================
   上海东锦企业管理咨询股份有限公司官网 - 全局样式表
   ============================================================ */

/* ============================================================
   1. CSS 变量系统（设计系统）
   ============================================================ */

:root {
  /* 颜色系统 */
  --color-primary: #0b3766;           /* 深海蓝 - 主色调 */
  --color-primary-dark: #091f3a;      /* 夜空蓝 - 深色背景 */
  --color-primary-light: #2a6bff;     /* 科技亮蓝 - 高亮色 */
  --color-secondary: #0ab68a;         /* 翡翠绿 - 辅助色 */
  --color-accent: #f0b429;            /* 琥珀金 - 强调色 */
  --color-text-dark: #1f2a37;         /* 炭黑 - 主要文本 */
  --color-text-light: #5b6876;        /* 中灰 - 次要文本 */
  --color-text-muted: #8a96a3;        /*  muted */
  --color-surface: #f4f7fb;           /* 雾白 - 页面背景 */
  --color-surface-alt: #eef2f8;       /* 次级背景 */
  --color-background-light: #f8f9fc;  /* 极浅灰 - 浅色背景 */
  --color-background-white: #ffffff;  /* 纯白 - 主要背景 */
  --color-border: #d6dde7;            /* 边框灰 */
  --color-border-strong: #b7c3d3;     /* 深边框 */
  --color-success: #00b894;           /* 成功绿 */
  --color-warning: #f0b429;           /* 警告黄 */
  --color-error: #e74c3c;             /* 错误红 */
  --color-info: #1ab0ff;              /* 信息青 */

  /* 字体系统 */
  --font-family-base: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  --font-family-heading: 'Roboto', 'PingFang SC', sans-serif;
  --font-size-base: 1rem;             /* 16px */
  --font-size-small: 0.875rem;        /* 14px */
  --font-size-large: 1.125rem;        /* 18px */
  --font-size-h1: 2.5rem;             /* 40px */
  --font-size-h2: 2rem;               /* 32px */
  --font-size-h3: 1.5rem;             /* 24px */
  --font-size-h4: 1.25rem;            /* 20px */
  --font-size-h5: 1.125rem;           /* 18px */
  --font-size-h6: 1rem;               /* 16px */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --font-size-display: 3.25rem;       /* 52px */
  --line-height-base: 1.7;
  --line-height-heading: 1.25;

  /* 间距系统 */
  --spacing-unit: 1rem;               /* 16px */
  --spacing-xs: 0.25rem;              /* 4px */
  --spacing-sm: 0.5rem;               /* 8px */
  --spacing-md: 1rem;                 /* 16px */
  --spacing-lg: 1.5rem;               /* 24px */
  --spacing-xl: 2rem;                 /* 32px */
  --spacing-2xl: 3rem;                /* 48px */
  --spacing-3xl: 4rem;                /* 64px */
  --spacing-4xl: 5rem;                /* 80px */

  /* 圆角系统 */
  --border-radius-base: 0.25rem;      /* 4px */
  --border-radius-medium: 0.5rem;     /* 8px */
  --border-radius-large: 0.75rem;     /* 12px */
  --border-radius-xl: 1rem;           /* 16px */
  --border-radius-xxl: 1.5rem;        /* 24px */

  /* 阴影系统 */
  --box-shadow-base: 0 10px 30px rgba(9, 31, 58, 0.08);
  --box-shadow-sm: 0 6px 18px rgba(9, 31, 58, 0.06);
  --box-shadow-md: 0 18px 40px rgba(9, 31, 58, 0.12);
  --box-shadow-lg: 0 24px 50px rgba(9, 31, 58, 0.14);
  --box-shadow-hover: 0 22px 50px rgba(9, 31, 58, 0.18);

  /* 过渡效果 */
  --transition-base: all 0.3s ease;
  --transition-fast: all 0.15s ease;
  --transition-slow: all 0.5s ease;

  /* 边框 */
  --border-width: 1px;
  --border-style: solid;
}

/* ============================================================
   2. 重置和基础样式
   ============================================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-base);
  color: var(--color-text-dark);
  background-color: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-dark);
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }
h4 { font-size: var(--font-size-h4); }
h5 { font-size: var(--font-size-h5); }
h6 { font-size: var(--font-size-h6); }

/* 段落样式 */
p {
  margin-bottom: var(--spacing-md);
}

/* 链接样式 */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

/* 列表样式 */
ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

li {
  margin-bottom: var(--spacing-sm);
}

/* 图片样式 */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 表格样式 */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--spacing-lg);
}

th, td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: var(--border-width) var(--border-style) var(--color-border);
}

th {
  background-color: var(--color-background-light);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
}

/* ============================================================
   3. 容器和网格布局
   ============================================================ */

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-lg);
}

/* 响应式 Grid 布局基础 */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

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

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

/* Flexbox 布局 */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

/* ============================================================
   4. 按钮样式
   ============================================================ */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-align: center;
  text-decoration: none;
  border: var(--border-width) var(--border-style) transparent;
  border-radius: var(--border-radius-base);
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-background-white);
  box-shadow: var(--box-shadow-base);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  box-shadow: var(--box-shadow-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-background-white);
  box-shadow: var(--box-shadow-base);
}

.btn-secondary:hover {
  background-color: #218838;
  box-shadow: var(--box-shadow-hover);
  transform: translateY(-2px);
}

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

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

.btn-large {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: var(--font-size-large);
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-small);
}

/* ============================================================
   5. 卡片和内容块
   ============================================================ */

.card {
  background-color: var(--color-background-white);
  border-radius: var(--border-radius-large);
  box-shadow: var(--box-shadow-base);
  overflow: hidden;
  transition: var(--transition-base);
}

.card:hover {
  box-shadow: var(--box-shadow-hover);
  transform: translateY(-4px);
}

.card-header {
  padding: var(--spacing-lg);
  background-color: var(--color-background-light);
  border-bottom: var(--border-width) var(--border-style) var(--color-border);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  background-color: var(--color-background-light);
  border-top: var(--border-width) var(--border-style) var(--color-border);
}

/* ============================================================
   6. 输入表单
   ============================================================ */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  border: var(--border-width) var(--border-style) var(--color-border);
  border-radius: var(--border-radius-base);
  background-color: var(--color-background-white);
  color: var(--color-text-dark);
  transition: var(--transition-fast);
  margin-bottom: var(--spacing-md);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

/* ============================================================
   7. 首页布局与组件
   ============================================================ */

body.home {
  background: linear-gradient(180deg, rgba(244, 247, 251, 1) 0%, rgba(244, 247, 251, 0) 40%) var(--color-surface);
}

.skip-link {
  position: absolute;
  top: -40px;
  left: var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-background-white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-base);
  transition: var(--transition-fast);
  z-index: 2000;
}

.skip-link:focus {
  top: var(--spacing-sm);
}

.section {
  padding: var(--spacing-4xl) 0;
}

.section--light {
  background-color: var(--color-background-light);
}

.section__head {
  max-width: 760px;
  margin-bottom: var(--spacing-2xl);
}

.section__head--center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section__head--inline {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--spacing-xl);
}

.section__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.link-arrow {
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.link-arrow::after {
  content: "→";
  font-size: 0.9em;
  transform: translateX(0);
  transition: var(--transition-fast);
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

.hero {
  padding: calc(var(--spacing-4xl) + 40px) 0 var(--spacing-4xl);
  position: relative;
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.6;
  z-index: 0;
}

.hero--consulting {
  background: radial-gradient(circle at top right, rgba(42, 107, 255, 0.15), transparent 55%), linear-gradient(135deg, rgba(9, 31, 58, 0.95) 0%, rgba(9, 31, 58, 0.85) 55%, rgba(11, 55, 102, 0.8) 100%);
  color: var(--color-background-white);
}

.hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__text h1 {
  font-size: var(--font-size-display);
  line-height: 1.15;
  margin-bottom: var(--spacing-lg);
  color: var(--color-background-white);
}

.hero__kicker {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  display: block;
  margin-bottom: var(--spacing-md);
}

.hero__text p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--spacing-xl);
}

.hero__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.hero__highlights {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--spacing-sm);
}

.hero__highlights li {
  padding-left: 1.5rem;
  position: relative;
  color: rgba(255, 255, 255, 0.8);
}

.hero__highlights li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 0.75rem;
  height: 0.12rem;
  background: var(--color-secondary);
}

.hero__panel {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.hero__image {
  border-radius: var(--border-radius-xxl);
  overflow: hidden;
  box-shadow: var(--box-shadow-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.metric-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(11, 55, 102, 0.1));
  border-radius: var(--border-radius-large);
  padding: var(--spacing-lg);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--color-background-white);
  backdrop-filter: blur(6px);
}

.metric-card__value {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.metric-card__label {
  display: block;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.75);
}

.metric-card__desc {
  margin-top: var(--spacing-sm);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

.diagnostic {
  background: var(--color-background-white);
}

.diagnostic__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--spacing-3xl);
  align-items: start;
}

.diagnostic__intro {
  max-width: 540px;
}

.diagnostic__intro > * {
  color: var(--color-text-dark);
}

.diagnostic__intro p {
  color: var(--color-text-light);
  max-width: 520px;
}

.diagnostic__form {
  background: var(--color-surface);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  box-shadow: var(--box-shadow-sm);
  border: 1px solid var(--color-border);
  display: grid;
  gap: var(--spacing-lg);
}

.diagnostic__field {
  display: grid;
  gap: var(--spacing-sm);
}

.diagnostic__field label {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-dark);
}

.diagnostic__field select,
.diagnostic__field textarea {
  padding: 0.85rem var(--spacing-md);
  border-radius: var(--border-radius-large);
  border: 1px solid var(--color-border);
  background: var(--color-background-white);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.diagnostic__field textarea {
  min-height: 120px;
  resize: vertical;
}

.diagnostic__field select:focus,
.diagnostic__field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(11, 55, 102, 0.12);
}

.diagnostic__result {
  background: var(--color-primary-dark);
  color: var(--color-background-white);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  box-shadow: var(--box-shadow-md);
  margin-top: var(--spacing-xl);
  display: none;
}

.diagnostic__result.is-visible {
  display: block;
}

.diagnostic__result h3 {
  color: var(--color-background-white);
  margin-bottom: var(--spacing-md);
}

.diagnostic__result ul {
  margin: var(--spacing-md) 0 0 1.25rem;
  color: rgba(255, 255, 255, 0.8);
}

.diagnostic__media {
  margin-top: var(--spacing-2xl);
  border-radius: var(--border-radius-xxl);
  overflow: hidden;
  box-shadow: var(--box-shadow-md);
}

.diagnostic__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.diagnostic__highlights {
  list-style: none;
  margin: var(--spacing-xl) 0 0;
  padding: 0;
  display: grid;
  gap: var(--spacing-md);
}

.diagnostic__highlights li {
  display: flex;
  gap: var(--spacing-sm);
  align-items: flex-start;
  color: var(--color-text-light);
}

.diagnostic__highlights li::before {
  content: "✔";
  color: var(--color-secondary);
  font-weight: var(--font-weight-bold);
  margin-top: 0.15rem;
}

.data-board {
  background: radial-gradient(circle at top right, rgba(15, 50, 90, 0.9), rgba(9, 31, 58, 0.95));
  color: var(--color-background-white);
  position: relative;
  overflow: hidden;
}

.data-board::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(240, 180, 41, 0.18), transparent 55%);
  pointer-events: none;
}

.data-board__grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-xl);
}

.data-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}

.data-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(240, 180, 41, 0.12), transparent 75%);
  pointer-events: none;
}

.data-card__label {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-sm);
}

.data-card__value {
  font-size: 2.25rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
}

.data-card__trend {
  color: var(--color-secondary);
  font-weight: var(--font-weight-medium);
}

.data-card__desc {
  margin-top: var(--spacing-sm);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
}

.roi-calculator {
  background: var(--color-background-white);
}

.roi-calculator__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: var(--spacing-3xl);
  align-items: start;
}

.roi-form {
  background: var(--color-surface);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  box-shadow: var(--box-shadow-sm);
  border: 1px solid var(--color-border);
  display: grid;
  gap: var(--spacing-lg);
}

.roi-form__group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.roi-form__field {
  display: grid;
  gap: var(--spacing-sm);
}

.roi-form__field label {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-dark);
}

.roi-form__field input {
  padding: 0.85rem var(--spacing-md);
  border-radius: var(--border-radius-large);
  border: 1px solid var(--color-border);
  background: var(--color-background-white);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.roi-form__field input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(11, 55, 102, 0.12);
}

.roi-result {
  background: linear-gradient(135deg, rgba(11, 55, 102, 0.95), rgba(9, 31, 58, 0.85));
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  color: var(--color-background-white);
  box-shadow: var(--box-shadow-md);
  position: sticky;
  top: calc(var(--spacing-4xl));
}

.roi-result h3 {
  color: var(--color-background-white);
}

.roi-result__metrics {
  display: grid;
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.roi-result__metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.2);
  padding-bottom: var(--spacing-sm);
}

.roi-result__metric span:last-child {
  font-weight: var(--font-weight-bold);
}

.roi-result__note {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
}

.page-hero--knowledge {
  background: linear-gradient(135deg, rgba(11, 55, 102, 0.95) 0%, rgba(26, 76, 133, 0.9) 45%, rgba(6, 21, 40, 0.9) 100%);
  color: var(--color-background-white);
}

.page-hero--knowledge .page-hero__content p {
  color: rgba(255, 255, 255, 0.82);
}

.page-hero--knowledge .breadcrumb {
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-large);
  margin-top: var(--spacing-lg);
}

.page-hero--knowledge .breadcrumb a {
  color: rgba(255, 255, 255, 0.92);
}

.resource-categories__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-xl);
}

.resource-card {
  background: var(--color-background-white);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-base);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  min-height: 100%;
}

.resource-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--color-surface);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  color: var(--color-primary);
}

.resource-card ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--color-text-light);
}

.resource-card__cta {
  margin-top: auto;
}

.resource-library__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-xl);
}

.resource-item {
  background: var(--color-background-white);
  border-radius: var(--border-radius-xxl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-sm);
  display: flex;
  flex-direction: column;
}

.resource-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.resource-item__body {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  min-height: 100%;
}

.resource-item__meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.resource-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(11, 55, 102, 0.08);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
}

.resource-insight__list {
  display: grid;
  gap: var(--spacing-lg);
}

.resource-insight__item {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-xxl);
  background: var(--color-background-white);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-sm);
}

.resource-insight__item img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: var(--border-radius-large);
}

.resource-insight__body {
  flex: 1;
  display: grid;
  gap: var(--spacing-sm);
}

.resource-subscribe {
  background: linear-gradient(135deg, rgba(9, 31, 58, 0.95), rgba(11, 55, 102, 0.9));
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-3xl);
  color: var(--color-background-white);
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: var(--spacing-2xl);
  align-items: center;
  box-shadow: var(--box-shadow-md);
}

.resource-subscribe form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.resource-subscribe label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
}

.resource-subscribe input,
.resource-subscribe select {
  padding: 0.85rem var(--spacing-md);
  border-radius: var(--border-radius-large);
  border: none;
  font-size: 1rem;
}

.resource-subscribe input:focus,
.resource-subscribe select:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(240, 180, 41, 0.25);
}

.resource-subscribe__actions {
  grid-column: 1 / -1;
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.pillars__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-xl);
}

.pillar-card {
  background: var(--color-background-white);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  box-shadow: var(--box-shadow-base);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  min-height: 100%;
}

.pillar-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: var(--color-surface);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
}

.pillar-card ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--color-text-light);
}

.solutions {
  background: var(--color-background-white);
}

.solutions__layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--spacing-3xl);
  align-items: start;
}

.solutions__cta {
  margin-top: var(--spacing-xl);
}

.solutions__clusters {
  display: grid;
  gap: var(--spacing-lg);
}

.solution-cluster {
  background: var(--color-surface);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-sm);
}

.solution-cluster header {
  margin-bottom: var(--spacing-md);
}

.solution-list {
  margin: 0 0 var(--spacing-md) 1.2rem;
  color: var(--color-text-light);
}

.solution-cluster footer {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.industries__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-xl);
}

.industry-card {
  border-radius: var(--border-radius-xxl);
  overflow: hidden;
  box-shadow: var(--box-shadow-base);
  background: var(--color-background-white);
  display: flex;
  flex-direction: column;
}

.industry-card img {
  height: 200px;
  object-fit: cover;
}

.industry-card__body {
  padding: var(--spacing-lg);
}

.insights__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: var(--spacing-3xl);
  align-items: stretch;
}

.insight-hero {
  border-radius: var(--border-radius-xxl);
  background-size: cover;
  background-position: center;
  min-height: 420px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  box-shadow: var(--box-shadow-md);
}

.insight-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 31, 58, 0.05) 0%, rgba(9, 31, 58, 0.9) 100%);
}

.insight-hero__content {
  position: relative;
  z-index: 1;
  color: var(--color-background-white);
  padding: var(--spacing-2xl);
}

.insight-hero__content h2 {
  color: var(--color-background-white);
}

.insights__list {
  display: grid;
  gap: var(--spacing-lg);
}

.insight-card {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-large);
  background: var(--color-background-white);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-sm);
}

.insight-card__meta {
  display: block;
  margin-top: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.insights__cta {
  margin-top: var(--spacing-md);
}

.cases__timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.case-card {
  background: var(--color-background-white);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  box-shadow: var(--box-shadow-base);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.case-card__year {
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.trust {
  background: var(--color-background-white);
}

.trust__logos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-2xl) 0;
}

.trust__logos span {
  background: var(--color-surface);
  border-radius: var(--border-radius-large);
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: center;
  font-weight: var(--font-weight-medium);
  box-shadow: var(--box-shadow-sm);
}

.trust__quote {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  color: var(--color-text-light);
}

.trust__quote blockquote {
  font-size: 1.25rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(11, 55, 102, 1) 0%, rgba(10, 182, 138, 0.85) 100%);
  color: var(--color-background-white);
  padding: var(--spacing-3xl) 0;
}

.cta-banner__layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
}

.cta-banner h2 {
  color: var(--color-background-white);
}

.cta-banner__actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.contact {
  background: var(--color-background-light);
}

.contact__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: var(--spacing-3xl);
  align-items: start;
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.contact__channel {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.contact__card {
  background: var(--color-background-white);
  border-radius: var(--border-radius-xxl);
  box-shadow: var(--box-shadow-base);
  padding: var(--spacing-2xl);
  border: 1px solid var(--color-border);
}

.contact__form {
  display: grid;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.contact__form input,
.contact__form select {
  width: 100%;
  border-radius: var(--border-radius-medium);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-background-light);
}

.inner-page {
  background: var(--color-surface);
}

.page-banner {
  padding: calc(var(--spacing-4xl) + 20px) 0 var(--spacing-3xl);
  background: linear-gradient(135deg, rgba(9, 31, 58, 0.92) 0%, rgba(11, 55, 102, 0.8) 60%, rgba(10, 182, 138, 0.75) 100%);
  color: var(--color-background-white);
}

.page-banner h1 {
  color: var(--color-background-white);
  margin-bottom: var(--spacing-md);
}

.page-banner p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 760px;
}

.page-banner__meta {
  margin-top: var(--spacing-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

.legal-content {
  display: grid;
  gap: var(--spacing-xl);
}

.legal-section {
  background: var(--color-background-white);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-2xl);
  box-shadow: var(--box-shadow-sm);
  border: 1px solid var(--color-border);
  display: grid;
  gap: var(--spacing-md);
}

.legal-section ul,
.legal-section ol {
  margin-left: 1.5rem;
  color: var(--color-text-light);
}

.legal-section strong {
  color: var(--color-text-dark);
}

.page-hero {
  position: relative;
  padding: calc(var(--spacing-4xl) + 40px) 0 var(--spacing-3xl);
  color: var(--color-background-white);
}

.page-hero--service {
  background: radial-gradient(circle at top right, rgba(42, 107, 255, 0.18), transparent 55%), linear-gradient(135deg, rgba(9, 31, 58, 0.92) 0%, rgba(11, 55, 102, 0.88) 55%, rgba(10, 182, 138, 0.75) 100%);
}

.page-hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: var(--spacing-3xl);
  align-items: center;
}

.page-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.page-hero__media {
  display: grid;
  gap: var(--spacing-xl);
}

.page-hero__image {
  border-radius: var(--border-radius-xxl);
  overflow: hidden;
  box-shadow: var(--box-shadow-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.page-hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.breadcrumb {
  margin-top: var(--spacing-xl);
}

.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb li:not(:last-child)::after {
  content: "›";
  margin-left: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.6);
}

.service-matrix {
  background: var(--color-background-white);
}

.service-matrix__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.service-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-sm);
  display: grid;
  gap: var(--spacing-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--box-shadow-hover);
}

.service-card__icon {
  font-size: 1.5rem;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: var(--color-background-white);
  display: grid;
  place-items: center;
  color: var(--color-primary);
  box-shadow: var(--box-shadow-sm);
}

.service-card__body h3 {
  margin-bottom: var(--spacing-xs);
}

.service-card__body p {
  color: var(--color-text-light);
  margin-bottom: 0;
}

.service-card__cta {
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
}

.service-card__cta::after {
  content: "→";
  margin-left: var(--spacing-xs);
  transition: transform 0.3s ease;
}

.service-card:hover .service-card__cta::after {
  transform: translateX(4px);
}

.methodology__steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.step-card {
  background: var(--color-background-white);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-base);
  display: grid;
  gap: var(--spacing-md);
}

.step-card__index {
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.step-card ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--color-text-light);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.capability-card {
  background: var(--color-background-white);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-base);
}

.capability-card p {
  color: var(--color-text-light);
}

.engagement-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.engagement-card {
  background: var(--color-background-white);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-base);
  display: grid;
  gap: var(--spacing-md);
}

.engagement-card ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--color-text-light);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.result-card {
  background: var(--color-background-white);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-base);
  display: grid;
  gap: var(--spacing-md);
}

.result-card p {
  color: var(--color-text-light);
}

.service-intro {
  background: var(--color-background-white);
}

.service-intro__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.6fr);
  gap: var(--spacing-3xl);
  align-items: start;
}

.service-intro__list {
  list-style: none;
  margin: var(--spacing-xl) 0 0;
  padding: 0;
  display: grid;
  gap: var(--spacing-sm);
}

.service-intro__list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--color-text-light);
}

.service-intro__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 0.75rem;
  height: 0.12rem;
  background: var(--color-secondary);
}

.service-intro__aside {
  background: var(--color-surface);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-sm);
  display: grid;
  gap: var(--spacing-md);
}

.service-intro__aside ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--color-text-light);
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.module-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-base);
  display: grid;
  gap: var(--spacing-md);
}

.module-card ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--color-text-light);
}

.service-process {
  background: var(--color-background-white);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.process-step {
  background: var(--color-surface);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-base);
  display: grid;
  gap: var(--spacing-sm);
}

.process-step__index {
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.process-step__duration {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.deliverables {
  background: var(--color-background-white);
}

.deliverable-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.deliverable-card {
  background: var(--color-surface);
  border-radius: var(--border-radius-xxl);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--box-shadow-sm);
}

.deliverable-card p {
  color: var(--color-text-light);
}

.case-highlight__content {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: var(--spacing-2xl);
  align-items: center;
}

.case-highlight__image {
  border-radius: var(--border-radius-xxl);
  overflow: hidden;
  box-shadow: var(--box-shadow-md);
}

.case-highlight__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-highlight__details {
  display: grid;
  gap: var(--spacing-md);
}

.case-highlight__details ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--color-text-light);
}

.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.85);
}

.site-footer__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: var(--spacing-2xl);
  padding: var(--spacing-3xl) 0;
}

.site-footer__links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-xl);
}

.site-footer__links h4 {
  color: var(--color-background-white);
  margin-bottom: var(--spacing-sm);
}

.site-footer__links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--spacing-sm);
}

.site-footer__links a {
  color: rgba(255, 255, 255, 0.75);
}

.site-footer__links a:hover {
  color: var(--color-secondary);
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: var(--spacing-lg) 0;
  color: rgba(255, 255, 255, 0.6);
}

.navbar-logo__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(42, 107, 255, 1) 0%, rgba(10, 182, 138, 1) 100%);
  color: var(--color-background-white);
  font-weight: 700;
  font-size: 1.1rem;
}

.navbar-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.navbar-logo__text small {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

.submenu--open {
  max-height: 800px;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ============================================================
   8. 工具类
   ============================================================ */

/* 间距工具类 */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-2xl); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }
.p-5 { padding: var(--spacing-2xl); }

/* 文本工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-dark { color: var(--color-text-dark); }
.text-light { color: var(--color-text-light); }

.text-bold { font-weight: var(--font-weight-bold); }
.text-medium { font-weight: var(--font-weight-medium); }

.text-small { font-size: var(--font-size-small); }
.text-large { font-size: var(--font-size-large); }

/* 背景工具类 */
.bg-light { background-color: var(--color-background-light); }
.bg-white { background-color: var(--color-background-white); }
.bg-primary { background-color: var(--color-primary); }

/* 显示/隐藏 */
.hidden { display: none !important; }
.visible { display: block !important; }

/* 圆角工具类 */
.rounded { border-radius: var(--border-radius-medium); }
.rounded-lg { border-radius: var(--border-radius-large); }
.rounded-xl { border-radius: var(--border-radius-xl); }

/* ============================================================
   9. 响应式设计 (Media Queries)
   ============================================================ */

@media (max-width: 1200px) {
  .hero__layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-hero__layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-hero__media {
    order: -1;
  }

  .hero__panel {
    flex-direction: row;
    align-items: center;
  }

  .diagnostic__layout,
  .roi-calculator__layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .metric-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .data-board__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .solutions__layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .service-matrix__grid,
  .resource-categories__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .module-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .process-steps,
  .deliverable-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case-highlight__content {
    grid-template-columns: minmax(0, 1fr);
  }

  .methodology__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .engagement-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .result-grid,
  .resource-library__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .insights__layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact__layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 992px) {
  .hero__panel {
    flex-direction: column;
    align-items: stretch;
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .data-board__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .service-matrix__grid,
  .resource-categories__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .service-intro__layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .module-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pillars__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .industries__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cases__timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .capability-grid,
  .engagement-grid,
  .result-grid,
  .resource-library__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .methodology__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process-steps,
  .deliverable-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case-highlight__content {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .site-footer__layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .site-footer__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 平板设备 (768px 及以上) */
@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }

  .section {
    padding: var(--spacing-3xl) 0;
  }

  .hero__text h1 {
    font-size: 2.3rem;
  }

  .page-hero__actions {
    width: 100%;
  }

  .page-hero__actions .btn {
    flex: 1;
    justify-content: center;
  }

  .service-matrix__grid,
  .capability-grid,
  .engagement-grid,
  .result-grid,
  .module-grid,
  .deliverable-grid,
  .resource-library__grid,
  .roi-form__group {
    grid-template-columns: minmax(0, 1fr);
  }

  .process-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .service-intro__aside {
    padding: var(--spacing-lg);
  }

  .diagnostic__layout,
  .roi-calculator__layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__buttons {
    width: 100%;
  }

  .hero__buttons .btn {
    flex: 1;
    justify-content: center;
  }

  .metric-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .data-board__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .pillars__grid,
  .industries__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .resource-categories__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .resource-subscribe {
    grid-template-columns: minmax(0, 1fr);
  }

  .resource-subscribe form {
    grid-template-columns: minmax(0, 1fr);
  }

  .solutions__layout {
    gap: var(--spacing-2xl);
  }

  .solutions__clusters {
    gap: var(--spacing-md);
  }

  .insight-hero {
    min-height: 360px;
  }

  .cases__timeline {
    grid-template-columns: minmax(0, 1fr);
  }

  .methodology__steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .cta-banner__layout {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-banner__actions {
    width: 100%;
  }

  .cta-banner__actions .btn {
    flex: 1;
    justify-content: center;
  }

  .trust__logos {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__links {
    grid-template-columns: minmax(0, 1fr);
  }

  .navbar-actions {
    display: none;
  }

  .page-banner {
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  }

  .page-banner__meta {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .legal-section {
    padding: var(--spacing-xl);
  }
}

/* 手机设备 (480px 及以上) */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  h3 { font-size: 1rem; }

  .btn-large {
    padding: var(--spacing-sm) var(--spacing-lg);
  }

  .hero__text h1 {
    font-size: 1.9rem;
  }

  .hero__highlights li {
    padding-left: 1rem;
  }

  .trust__logos {
    grid-template-columns: minmax(0, 1fr);
  }

  .resource-categories__grid,
  .resource-library__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .resource-insight__item {
    flex-direction: column;
    align-items: stretch;
  }

  .resource-insight__item img {
    width: 100%;
    height: 180px;
  }

  .page-banner h1 {
    font-size: 1.7rem;
  }

  .page-banner__meta {
    font-size: 0.8rem;
  }

  .legal-section {
    padding: var(--spacing-lg);
  }
}

/* ============================================================
   10. 打印样式
   ============================================================ */

@media print {
  body {
    background-color: var(--color-background-white);
    color: var(--color-text-dark);
  }

  a {
    text-decoration: underline;
  }

  .no-print {
    display: none !important;
  }
}