/* ==========================================================================
   杭州链动跨境科技有限公司 - 企业官网主样式表 (v2 视觉升级版)
   Author: Senior Developer
   Description: 商务简约 · 高级质感，PC+移动端自适应
   ========================================================================== */

/* ==========================================================================
   1. CSS 变量定义（主题色、间距、字体）
   ========================================================================== */
:root {
  /* 主色调 - 皇家商务蓝 */
  --color-primary: #1d4ed8;
  --color-primary-dark: #173a9e;
  --color-primary-deep: #0c1f5c;
  --color-primary-light: #3b82f6;
  --color-primary-lighter: #e8eefb;

  /* 强调色 - 琥珀金（用于CTA按钮、高亮） */
  --color-accent: #f5a623;
  --color-accent-dark: #d98a06;
  --color-accent-light: #fbbf24;

  /* 中性色 */
  --color-dark: #0b1b3a;
  --color-text: #1e293b;
  --color-text-secondary: #4b586e;
  --color-text-light: #94a3b8;
  --color-bg: #ffffff;
  --color-bg-light: #f6f8fc;
  --color-bg-alt: #eef2f9;
  --color-border: #e5eaf3;

  /* 深海军蓝（Hero / 页脚） */
  --color-navy: #081331;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  /* 间距系统 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(11, 27, 58, 0.06);
  --shadow-md: 0 8px 24px rgba(11, 27, 58, 0.10);
  --shadow-lg: 0 16px 40px rgba(11, 27, 58, 0.14);
  --shadow-xl: 0 24px 56px rgba(11, 27, 58, 0.18);
  --shadow-primary: 0 12px 28px rgba(29, 78, 216, 0.30);
  --shadow-accent: 0 12px 28px rgba(245, 166, 35, 0.35);

  /* 过渡 */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* 布局 */
  --container-max: 1200px;
  --header-height: 72px;
}

/* ==========================================================================
   2. CSS Reset / 基础样式
   ========================================================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  font-weight: 400;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

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

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

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

/* ==========================================================================
   4. 布局工具类
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

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

/* 最后一个 section 底部留出空间，避免被右下角浮动咨询按钮遮挡 */
main > .section:last-of-type,
.section + footer ~ .section {
  padding-bottom: 120px;
}

.section-sm {
  padding: var(--space-xl) 0;
}

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

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

/* ==========================================================================
   5. 排版样式
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-dark);
  letter-spacing: -0.01em;
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--color-text-secondary);
}

/* 眉题（eyebrow）：标题上方的小标签 */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: var(--color-primary-lighter);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.section-title {
  font-size: 2.25rem;
  text-align: center;
  margin-bottom: 1rem;
  color: var(--color-dark);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto var(--space-xl);
}

.section-header {
  margin-bottom: var(--space-xl);
}

/* 标题装饰线 */
.title-underline {
  display: block;
  width: 56px;
  height: 5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  margin: 1.1rem auto 0;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   6. 按钮样式
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.9rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(29, 78, 216, 0.40);
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: #fff;
  box-shadow: var(--shadow-accent);
}

.btn-accent:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(245, 166, 35, 0.45);
}

.btn-outline {
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-primary);
  transform: translateY(-3px);
}

/* 列表底部"查看更多"按钮 */
.btn-more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2.2rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
  transition: var(--transition);
}

.btn-more::after {
  content: '→';
  transition: transform 0.3s ease;
}

.btn-more:hover {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-primary);
  transform: translateY(-3px);
}

.btn-more:hover::after {
  transform: translateX(4px);
}

.btn-white {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(10px);
}

.btn-white:hover {
  background: #fff;
  color: var(--color-primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn-lg {
  padding: 1.05rem 2.6rem;
  font-size: 1.1rem;
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

/* ==========================================================================
   7. 头部 / 导航栏（v3 精修版）
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  border-bottom: 1px solid rgba(15, 23, 42, 0.07);
  z-index: 1000;
  transition: height 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

/* 滚动后：变矮 + 柔和投影，更有呼吸感 */
.header.scrolled {
  height: 64px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* ---------- Logo ---------- */
.logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--color-primary-dark);
  flex-shrink: 0;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 55%, #3b82f6 100%);
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow:
    0 6px 14px rgba(37, 99, 235, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
  transition: var(--transition);
}

.logo-icon svg {
  width: 22px;
  height: 22px;
}

.logo:hover .logo-icon {
  transform: translateY(-1px) rotate(-6deg);
  box-shadow:
    0 9px 20px rgba(37, 99, 235, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.logo-text .logo-name {
  font-size: 1.16rem;
  font-weight: 800;
  letter-spacing: 0.03em;
}

.logo-text .logo-sub {
  font-size: 0.58rem;
  color: var(--color-text-light);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ---------- 导航菜单 ---------- */
.nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.45rem 0.9rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: #475569;
  border-radius: 8px;
  transition: color 0.25s ease, background 0.25s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.07);
}

/* 当前页：柔和的蓝金双色底胶囊，替代原来的小划线 */
.nav-link.active {
  color: var(--color-primary);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.10), rgba(245, 158, 11, 0.12));
}

/* 下拉箭头 */
.nav-chevron {
  width: 13px;
  height: 13px;
  opacity: 0.55;
  transition: transform 0.25s ease;
}

.nav-item:hover .nav-chevron {
  transform: rotate(180deg);
  opacity: 1;
}

/* ---------- 下拉菜单 ---------- */
.dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 300px;
  background: #fff;
  border-radius: 14px;
  box-shadow:
    0 20px 50px rgba(15, 23, 42, 0.14),
    0 4px 12px rgba(15, 23, 42, 0.06);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  border: 1px solid rgba(15, 23, 42, 0.06);
}

/* 下拉面板顶部小三角 */
.dropdown::before {
  content: '';
  position: absolute;
  top: -5px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 10px;
  height: 10px;
  background: #fff;
  border-top-left-radius: 3px;
  border-top: 1px solid rgba(15, 23, 42, 0.06);
  border-left: 1px solid rgba(15, 23, 42, 0.06);
}

.nav-item:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-link {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.7rem 0.8rem;
  border-radius: 10px;
  transition: var(--transition);
}

.dropdown-link:hover {
  background: var(--color-primary-lighter);
}

.dropdown-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.dropdown-link:hover .dropdown-icon {
  transform: scale(1.08) rotate(-4deg);
}

.dropdown-content h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 0.15rem;
}

.dropdown-content p {
  font-size: 0.76rem;
  color: var(--color-text-light);
  margin: 0;
}

/* ---------- 导航右侧工具（语言切换 + 电话CTA） ---------- */
.nav-tools {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  margin-left: 0.5rem;
  white-space: nowrap;            /* 防止中文字符在窄屏被压成竖排 */
}

/* 抽屉内工具组：默认隐藏在桌面端（仅移动端抽屉展开时显示） */
.nav-mobile-tools {
  display: none;
  list-style: none;
}

.nav-mobile-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* 语言切换：迷你胶囊分段器 */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  border: 1px solid rgba(15, 23, 42, 0.10);
  border-radius: var(--radius-full);
  padding: 3px;
  background: #f8fafc;
  white-space: nowrap;
  flex-shrink: 0;
}

.lang-btn {
  padding: 0.26rem 0.72rem;
  font-size: 0.74rem;
  font-weight: 700;
  color: #64748b;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
  transition: var(--transition);
  white-space: nowrap;            /* 中文/EN 不允许换行 */
  line-height: 1.2;
  min-width: 38px;                /* 兜底宽度，防止被压到两字换行 */
  text-align: center;
}

.lang-btn:hover {
  color: var(--color-primary);
}

.lang-btn.active {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
}

/* 电话CTA：深蓝渐变胶囊 + 金色圆形图标底 */
.nav-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.38rem 1.15rem 0.38rem 0.42rem;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
  color: #fff;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  box-shadow: 0 8px 20px rgba(30, 58, 138, 0.30);
  transition: var(--transition);
  white-space: nowrap;            /* 电话号码不换行 */
  flex-shrink: 0;
}

.nav-phone span {
  white-space: nowrap;
}

.nav-phone svg {
  width: 26px;
  height: 26px;
  box-sizing: content-box;
  padding: 6px;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  border-radius: 50%;
  flex-shrink: 0;
}

.nav-phone:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(30, 58, 138, 0.40);
  color: #fff;
}

/* ---------- 移动端菜单按钮 ---------- */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  height: 22px;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--color-dark);
  border-radius: 3px;
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ---------- 导航栏中等屏幕自适应（防止英文长文案挤压重叠） ---------- */
@media (max-width: 1280px) {
  .header-inner { gap: 0.5rem; }
  .nav { gap: 0.5rem; }
  .nav-link { padding: 0.5rem 0.7rem; font-size: 0.92rem; }
  .logo-text .logo-sub { display: none; }            /* 1200 以下隐藏 logo 副标题 */
}

@media (max-width: 1150px) {
  .header-inner { gap: 0.4rem; }
  .nav { gap: 0.35rem; }
  .nav-link { padding: 0.45rem 0.55rem; font-size: 0.88rem; }
  .nav-tools { gap: 0.5rem; margin-left: 0; }
  .lang-btn { padding: 0.26rem 0.65rem; font-size: 0.74rem; min-width: 40px; }
  .nav-phone {
    font-size: 0.85rem;
    padding: 0.4rem 1rem 0.4rem 0.42rem;
    gap: 0.45rem;
  }
  .nav-phone svg { width: 18px; height: 18px; }
  .logo { gap: 0.55rem; }
  .logo-icon { width: 38px; height: 38px; border-radius: 10px; }
  .logo-icon svg { width: 19px; height: 19px; }
  .logo-text .logo-name { font-size: 1.05rem; }
}

/* 更窄屏幕：电话按钮只保留圆形图标（号码在移动菜单/页脚仍可见） */
@media (max-width: 960px) {
  .nav-phone { padding: 0.5rem; }
  .nav-phone span { display: none; }
  .nav-link { padding: 0.4rem 0.5rem; font-size: 0.85rem; }
}

/* ==========================================================================
   8. Hero 区域
   ========================================================================== */
.hero {
  position: relative;
  min-height: 620px;
  padding: 90px 0 110px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(140deg, #060f26 0%, #0d2560 45%, #1d4ed8 115%);
  background-size: 46px 46px, 46px 46px, cover;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.16) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -12%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.18) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  color: #fff;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1.1rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-full);
  font-size: 0.84rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 1.5rem;
  backdrop-filter: blur(10px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.hero h1 {
  color: #fff;
  font-size: 3.2rem;
  line-height: 1.18;
  margin-bottom: 1.4rem;
  letter-spacing: -0.015em;
}

.hero h1 .highlight {
  background: linear-gradient(120deg, var(--color-accent-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.12rem;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 2.2rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 2.75rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.hero-stat-num {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--color-accent-light);
  line-height: 1.2;
}

.hero-stat-label {
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.65);
}

/* ==========================================================================
   8.1 Hero 数据看板（右侧视觉）
   ========================================================================== */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 看板主卡片 */
.dashboard-card {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 450px;
  background: rgba(255, 255, 255, 0.98);
  border-radius: var(--radius-xl);
  padding: 1.6rem 1.6rem 1.4rem;
  box-shadow: 0 40px 90px rgba(3, 12, 40, 0.5);
  animation: floatY 6s ease-in-out infinite;
}

.dashboard-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.dashboard-dot-group {
  display: inline-flex;
  gap: 5px;
}

.dashboard-dot-group i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.dashboard-dot-group i:nth-child(1) { background: #fb7185; }
.dashboard-dot-group i:nth-child(2) { background: #fbbf24; }
.dashboard-dot-group i:nth-child(3) { background: #34d399; }

.dashboard-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-dark);
}

.dashboard-live {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: #16a34a;
  background: #dcfce7;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #16a34a;
  animation: pulse 1.6s infinite;
}

/* 看板指标 */
.dashboard-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
}

.dash-stat {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
}

.dash-stat-label {
  display: block;
  font-size: 0.74rem;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
}

.dash-stat-val {
  display: block;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: -0.01em;
  margin-bottom: 0.2rem;
}

.dash-stat-trend {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.1rem 0.5rem;
  border-radius: var(--radius-full);
}

.dash-stat-trend.up {
  color: #dc2626;
  background: #fee2e2;
}

.dash-stat-trend.down {
  color: #16a34a;
  background: #dcfce7;
}

/* 柱状图 */
.dash-chart {
  display: flex;
  align-items: flex-end;
  gap: 7px;
  height: 130px;
  padding: 0.25rem 0.15rem 0;
}

.dash-chart .bar {
  flex: 1;
  height: var(--h, 40%);
  border-radius: 5px 5px 2px 2px;
  background: linear-gradient(180deg, var(--color-primary-light), var(--color-primary));
  transform-origin: bottom;
  animation: barGrow 1s cubic-bezier(0.34, 1.3, 0.64, 1) both;
}

.dash-chart .bar.hot {
  background: linear-gradient(180deg, var(--color-accent-light), var(--color-accent));
}

.dash-footer {
  display: flex;
  justify-content: space-between;
  margin-top: 0.8rem;
  font-size: 0.72rem;
  color: var(--color-text-light);
}

/* 悬浮徽章 */
.hero-float {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.75rem 1.05rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  color: #fff;
  box-shadow: 0 16px 40px rgba(3, 12, 40, 0.35);
}

.hero-float .hero-float-emoji {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.hero-float b {
  display: block;
  font-size: 0.88rem;
  font-weight: 800;
  line-height: 1.3;
}

.hero-float span {
  display: block;
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.72);
}

.hero-float-1 {
  top: -26px;
  left: -34px;
  animation: floatY 5s ease-in-out infinite;
}

.hero-float-2 {
  bottom: -30px;
  right: -28px;
  animation: floatY 5.5s 0.6s ease-in-out infinite;
}

/* ==========================================================================
   8.2 信任背书条（Hero 下方）
   ========================================================================== */
.trust-strip {
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  padding: 1.6rem 0;
}

.trust-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.trust-item svg {
  width: 22px;
  height: 22px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* 内页 Banner */
.page-banner {
  padding: 84px 0 70px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(140deg, #060f26 0%, #0d2560 60%, #173a9e 120%);
  background-size: 46px 46px, 46px 46px, cover;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.12) 0%, transparent 70%);
  border-radius: 50%;
}

.page-banner h1 {
  color: #fff;
  font-size: 2.6rem;
  margin-bottom: 0.9rem;
  position: relative;
  z-index: 1;
}

.page-banner p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 1.1rem;
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.6rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
  position: relative;
  z-index: 1;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

/* ==========================================================================
   9. 卡片组件
   ========================================================================== */
.card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

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

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--color-primary-lighter), var(--color-bg-alt));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.card-body {
  padding: 1.6rem;
}

.card-title {
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.card-text {
  color: var(--color-text-secondary);
  font-size: 0.93rem;
  margin-bottom: 0;
}

/* 服务卡片 */
.service-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem 1.8rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

/* 顶部渐变描边：悬停时展开 */
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

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

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.7rem;
  margin-bottom: 1.35rem;
  transition: var(--transition);
  box-shadow: var(--shadow-primary);
}

.service-card:hover .service-icon {
  transform: rotate(-6deg) scale(1.1);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  box-shadow: var(--shadow-accent);
}

.service-card h3 {
  font-size: 1.28rem;
  margin-bottom: 0.7rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.service-features {
  margin-top: 1rem;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--color-border);
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.86rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.service-features li::before {
  content: '✓';
  color: var(--color-primary);
  font-weight: 800;
}

/* ==========================================================================
   10. 网格布局
   ========================================================================== */
.grid {
  display: grid;
  gap: 1.75rem;
}

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

/* ==========================================================================
   11. 优势/特性区域
   ========================================================================== */
.feature-item {
  text-align: center;
  padding: 2.25rem 1.6rem;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.feature-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 74px;
  height: 74px;
  margin: 0 auto 1.35rem;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--color-primary-lighter), #fff);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.1rem;
  border: 1.5px solid var(--color-primary-lighter);
  transition: var(--transition);
}

.feature-item:hover .feature-icon {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-color: transparent;
  transform: rotate(-6deg) scale(1.08);
  box-shadow: var(--shadow-primary);
}

.feature-item h3 {
  font-size: 1.15rem;
  margin-bottom: 0.55rem;
}

.feature-item p {
  font-size: 0.89rem;
}

/* ==========================================================================
   12. 关于我们 - 统计数字
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

.stat-item {
  text-align: center;
  padding: 2.25rem 1rem;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 44px;
  height: 4px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.stat-num {
  font-size: 2.6rem;
  font-weight: 800;
  background: linear-gradient(120deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
}

/* ==========================================================================
   13. 时间线
   ========================================================================== */
.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary-lighter), var(--color-primary), var(--color-primary-lighter));
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 2rem 2.5rem;
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-dot {
  position: absolute;
  top: 0;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px var(--color-primary);
}

.timeline-item:nth-child(odd) .timeline-dot {
  right: -8px;
}

.timeline-item:nth-child(even) .timeline-dot {
  left: -8px;
}

.timeline-year {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.timeline-content {
  background: #fff;
  padding: 1.35rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.timeline-content:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.timeline-content h4 {
  font-size: 1.02rem;
  margin-bottom: 0.5rem;
}

.timeline-content p {
  font-size: 0.87rem;
  margin: 0;
}

/* ==========================================================================
   14. 案例展示
   ========================================================================== */
.case-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.case-filter-btn {
  padding: 0.55rem 1.5rem;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  background: #fff;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}

.case-filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.case-filter-btn.active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-color: transparent;
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.case-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

.case-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-7px);
}

/* 案例封面（渐变占位 + 装饰圆 + 大表情） */
.case-img {
  position: relative;
  width: 100%;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.6rem;
  overflow: hidden;
}

.case-img::before {
  content: '';
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1.5px dashed rgba(255, 255, 255, 0.35);
  top: -70px;
  right: -60px;
}

.case-img::after {
  content: '';
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  bottom: -40px;
  left: -30px;
}

.case-img > * {
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.25));
}

.case-img-1 { background: linear-gradient(135deg, #173a9e, #3b82f6); }
.case-img-2 { background: linear-gradient(135deg, #047857, #10b981); }
.case-img-3 { background: linear-gradient(135deg, #6d28d9, #a78bfa); }
.case-img-4 { background: linear-gradient(135deg, #b45309, #f59e0b); }
.case-img-5 { background: linear-gradient(135deg, #b91c1c, #f87171); }
.case-img-6 { background: linear-gradient(135deg, #0e7490, #22d3ee); }

.case-body {
  padding: 1.6rem;
}

.case-tag {
  display: inline-block;
  padding: 0.28rem 0.85rem;
  background: var(--color-primary-lighter);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}

.case-body h3 {
  font-size: 1.15rem;
  margin-bottom: 0.55rem;
}

.case-body p {
  font-size: 0.88rem;
  margin-bottom: 1rem;
}

.case-metrics {
  display: flex;
  gap: 1.5rem;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--color-border);
}

.case-metric {
  flex: 1;
}

.case-metric-val {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

.case-metric-label {
  font-size: 0.74rem;
  color: var(--color-text-light);
}

/* ==========================================================================
   15. 新闻列表
   ========================================================================== */
.news-card {
  display: flex;
  gap: 0;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

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

.news-img {
  width: 220px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.6rem;
  background: linear-gradient(135deg, var(--color-primary-lighter), var(--color-bg-alt));
}

.news-body {
  padding: 1.6rem 1.75rem;
  flex: 1;
}

.news-date {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.news-body h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  transition: var(--transition);
}

.news-card:hover .news-body h3 {
  color: var(--color-primary);
}

.news-body p {
  font-size: 0.88rem;
  margin-bottom: 0.85rem;
}

.news-read-more {
  font-size: 0.86rem;
  color: var(--color-primary);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.news-read-more:hover {
  gap: 0.5rem;
}

/* ---------- 新闻分页按钮 ---------- */
.news-page-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #fff;
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
}

.news-page-btn:hover:not(.disabled):not(.active) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.news-page-btn.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

.news-page-btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ==========================================================================
   16. 联系表单
   ========================================================================== */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-info-card {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(140deg, #0c1f5c 0%, #1d4ed8 130%);
  border-radius: var(--radius-xl);
  padding: 2.6rem 2.2rem;
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.contact-info-card::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1.5px dashed rgba(255, 255, 255, 0.22);
}

.contact-info-card h3 {
  color: #fff;
  font-size: 1.55rem;
  margin-bottom: 0.55rem;
}

.contact-info-card p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.93rem;
  margin-bottom: 2rem;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.6rem;
}

.contact-info-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-info-text h4 {
  color: #fff;
  font-size: 0.9rem;
  margin-bottom: 0.3rem;
}

.contact-info-text p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  margin: 0;
}

.contact-info-text a {
  color: rgba(255, 255, 255, 0.85);
}

.contact-info-text a:hover {
  color: var(--color-accent-light);
}

/* 表单 */
.contact-form {
  background: #fff;
  border-radius: var(--radius-xl);
  padding: 2.6rem 2.4rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 1.3rem;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.form-label .required {
  color: #dc2626;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.8rem 1.05rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg-light);
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(29, 78, 216, 0.10);
  background: #fff;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-submit {
  width: 100%;
  padding: 1.05rem;
  font-size: 1.02rem;
  font-weight: 700;
}

.form-success {
  display: none;
  padding: 1rem 1.2rem;
  background: #d1fae5;
  border: 1px solid #6ee7b7;
  border-radius: var(--radius-md);
  color: #065f46;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  align-items: center;
  gap: 0.5rem;
}

.form-success.show {
  display: flex;
  animation: fadeInDown 0.4s ease;
}

.form-error {
  display: none;
  padding: 1rem 1.2rem;
  background: #fee2e2;
  border: 1px solid #fca5a5;
  border-radius: var(--radius-md);
  color: #991b1b;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.form-error.show {
  display: block;
  animation: fadeInDown 0.4s ease;
}

/* ==========================================================================
   17. CTA 区域
   ========================================================================== */
.cta-section {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(140deg, #060f26 0%, #12296b 55%, #1d4ed8 130%);
  background-size: 46px 46px, 46px 46px, cover;
  padding: 4.5rem 0;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.16) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section h2 {
  color: #fff;
  font-size: 2.5rem;
  margin-bottom: 0.9rem;
  position: relative;
  z-index: 1;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 1.12rem;
  margin-bottom: 2.2rem;
  position: relative;
  z-index: 1;
}

.cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.cta-phone {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: #fff;
  font-size: 1.55rem;
  font-weight: 800;
  margin-top: 1.8rem;
  position: relative;
  z-index: 1;
  letter-spacing: 0.02em;
}

.cta-phone-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  animation: ring 2s infinite;
  box-shadow: var(--shadow-accent);
}

/* ==========================================================================
   18. 页脚
   ========================================================================== */
.footer {
  position: relative;
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.7);
  padding: 4.5rem 0 0;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 1.1rem;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.9rem;
  margin-bottom: 1.6rem;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.10);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  transform: translateY(-3px);
  box-shadow: var(--shadow-accent);
}

.footer-col h4 {
  color: #fff;
  font-size: 1.02rem;
  margin-bottom: 1.3rem;
  position: relative;
  padding-bottom: 0.6rem;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 26px;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
}

.footer-col ul li {
  margin-bottom: 0.8rem;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--color-accent-light);
  padding-left: 5px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.58);
}

.footer-contact-item .footer-contact-icon {
  flex-shrink: 0;
  color: var(--color-accent);
}

.footer-contact-item a {
  color: rgba(255, 255, 255, 0.58);
}

.footer-contact-item a:hover {
  color: var(--color-accent-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 1.8rem 0 1.4rem;
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.62);
}

/* 切割声明：占满第一行，确保可读 */
.footer-disclaimer {
  width: 100%;
  margin: 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.78rem;
  line-height: 1.7;
  letter-spacing: 0.2px;
  text-align: justify;
}

/* 第二行：左版权 + ICP ｜ 右链接组 */
.footer-bottom-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  width: 100%;
}

.footer-bottom-left {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom-right {
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
}

.footer-divider {
  color: rgba(255, 255, 255, 0.25);
  font-weight: 300;
}

.footer-bottom-links {
  display: flex;
  gap: 1.6rem;
  flex-wrap: wrap;
}

.footer-bottom-links a:hover,
.footer-bottom-right a:hover,
.footer-icp-link:hover {
  color: var(--color-accent-light);
}

/* 工信部 ICP 备案号链接：合规要求挂链到 beian.miit.gov.cn */
.footer-icp-link {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-icp-link::before {
  content: '🛡️ ';
  font-size: 0.78em;
  margin-right: 2px;
  vertical-align: baseline;
  filter: grayscale(0.3);
}

/* ==========================================================================
   19. 隐私政策页面
   ========================================================================== */
.privacy-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 0;
}

.privacy-content h2 {
  font-size: 1.5rem;
  margin: 2.2rem 0 1rem;
  color: var(--color-dark);
  padding-left: 0.85rem;
  border-left: 4px solid var(--color-primary);
}

.privacy-content h3 {
  font-size: 1.12rem;
  margin: 1.5rem 0 0.75rem;
  color: var(--color-text);
}

.privacy-content p {
  margin-bottom: 1rem;
  line-height: 1.85;
  font-size: 0.95rem;
}

.privacy-content ul {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.privacy-content ul li {
  margin-bottom: 0.5rem;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  list-style: disc;
}

.privacy-toc {
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  padding: 1.6rem 2rem;
  margin-bottom: 2rem;
  border: 1px solid var(--color-border);
}

.privacy-toc h4 {
  margin-bottom: 0.85rem;
}

.privacy-toc ul {
  padding-left: 1.25rem;
}

.privacy-toc ul li {
  margin-bottom: 0.5rem;
  list-style: disc;
}

.privacy-toc ul li a {
  color: var(--color-primary);
  font-size: 0.9rem;
}

.privacy-toc ul li a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   20. 服务流程
   ========================================================================== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step-num {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.1rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  position: relative;
  z-index: 1;
  box-shadow: var(--shadow-primary);
  border: 4px solid #fff;
}

.process-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(50% + 36px);
  width: calc(100% - 72px);
  height: 2.5px;
  background: repeating-linear-gradient(90deg, var(--color-primary) 0, var(--color-primary) 8px, transparent 8px, transparent 16px);
  opacity: 0.45;
}

.process-step h4 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: 0.86rem;
}

/* ==========================================================================
   21. FAQ 手风琴（services 页面）
   ========================================================================== */
.faq-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover,
.faq-item.open {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-lighter);
}

.faq-question {
  padding: 1.3rem 1.6rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  font-weight: 700;
  color: var(--color-dark);
  font-size: 1.02rem;
  user-select: none;
}

.faq-icon {
  font-size: 1.3rem;
  color: var(--color-primary);
  transition: transform 0.3s;
  flex-shrink: 0;
  font-weight: 400;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer p {
  padding: 0 1.6rem 1.3rem;
  font-size: 0.92rem;
}

/* ==========================================================================
   22. 通用工具类
   ========================================================================== */
.bg-primary { background: var(--color-primary); }
.bg-light { background: var(--color-bg-light); }
.text-white { color: #fff; }
.mb-0 { margin-bottom: 0 !important; }
.mt-2 { margin-top: 2.5rem; }
.hidden { display: none !important; }
.rounded { border-radius: var(--radius-md); }

/* 浮动电话按钮（带脉冲光圈）—— 已停用，统一由 consult-modal 浮窗承载 */

/* ==========================================================================
   23. 动画
   ========================================================================== */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.2); }
}

@keyframes ring {
  0%, 100% { transform: rotate(0); }
  10%, 30% { transform: rotate(-15deg); }
  20%, 40% { transform: rotate(15deg); }
  50% { transform: rotate(0); }
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes barGrow {
  from { transform: scaleY(0); }
  to { transform: scaleY(1); }
}

@keyframes ripple {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.55); opacity: 0; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* 滚动动画 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-delay-1 { transition-delay: 0.1s; }
.animate-delay-2 { transition-delay: 0.2s; }
.animate-delay-3 { transition-delay: 0.3s; }
.animate-delay-4 { transition-delay: 0.4s; }

/* ==========================================================================
   24. 响应式 - 平板
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .hero-visual {
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
  }

  .hero-float-1 { left: -10px; }
  .hero-float-2 { right: -10px; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.25rem;
  }

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

  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem 2rem;
  }

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

/* ==========================================================================
   25. 响应式 - 移动端
   ========================================================================== */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  .section-title { font-size: 1.7rem; }

  .section { padding: 3.25rem 0; }

  /* 导航 - 移动端（整组隐藏：菜单走抽屉，语言/电话在抽屉内有独立入口） */
  .nav,
  .nav-tools {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-list {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    gap: 0;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-lg);
  }

  .nav-list.active {
    transform: translateX(0);
    display: flex;
  }

  .nav-item {
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-link {
    padding: 1rem;
    width: 100%;
    justify-content: space-between;
  }

  .nav-link.active::after {
    display: none;
  }

  .dropdown {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    padding: 0 0 0 1rem;
    display: none;
  }

  .nav-item.dropdown-active .dropdown {
    display: block;
  }

  /* 移动端导航工具栏 */
  .nav-mobile-tools {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 1rem;
    flex-direction: column;
    gap: 1rem;
    border-top: 1px solid var(--color-border);
  }

  .nav-mobile-phone {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.9rem;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: #fff;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1rem;
    box-shadow: var(--shadow-accent);
  }

  /* Hero */
  .hero {
    padding: 56px 0 72px;
    min-height: auto;
  }

  .hero h1 { font-size: 2rem; }

  .hero-stats {
    flex-wrap: wrap;
    gap: 1.5rem 2.5rem;
  }

  .hero-stat-num { font-size: 1.6rem; }

  .hero-float-1 { top: -20px; left: -6px; padding: 0.6rem 0.85rem; }
  .hero-float-2 { bottom: -22px; right: -6px; padding: 0.6rem 0.85rem; }

  .trust-inner { justify-content: center; }
  .trust-item { font-size: 0.82rem; }

  /* Footer 移动端：第二行切换为上下结构 */
  .footer-bottom-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }
  .footer-bottom-right { gap: 1.2rem; }

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

  /* 时间线 */
  .timeline::before {
    left: 0;
  }

  .timeline-item {
    width: 100%;
    left: 0 !important;
    text-align: left !important;
    padding-left: 2.5rem;
  }

  .timeline-item .timeline-dot {
    left: 0 !important;
    right: auto !important;
  }

  /* 新闻卡片 */
  .news-card {
    flex-direction: column;
  }

  .news-img {
    width: 100%;
    height: 160px;
  }

  /* 表单 */
  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form { padding: 1.8rem 1.4rem; }
  .contact-info-card { padding: 2rem 1.6rem; }

  /* 页脚 */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.6rem;
    text-align: center;
  }

  /* CTA */
  .cta-section h2 { font-size: 1.75rem; }
  .cta-phone { font-size: 1.25rem; }

  /* 流程 */
  .process-grid {
    grid-template-columns: 1fr;
  }

  .process-step:not(:last-child)::after {
    display: none;
  }

  .container {
    padding: 0 18px;
  }
}

/* ==========================================================================
   26. 额外小屏适配
   ========================================================================== */
@media (max-width: 480px) {
  .hero h1 { font-size: 1.7rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .section-title { font-size: 1.45rem; }
  .page-banner h1 { font-size: 1.7rem; }
  .dashboard-stats { gap: 0.6rem; }
  .dash-stat-val { font-size: 1.15rem; }
}

/* ==========================================================================
   23. 可替换图标槽位（site-render.js 会从服务器配置拉图填充）
   ========================================================================== */
[data-icon-slot] {
  position: relative;
}
[data-icon-slot] .site-icon-fallback {
  display: inline-block;
  position: relative;
  z-index: 1;
  line-height: 1;
}
[data-icon-slot] .site-icon-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
  z-index: 2;
  background: var(--color-bg-light);
}
[data-icon-slot][data-has-image="true"] .site-icon-fallback {
  display: none;
}

/* case-img：图片全卡覆盖，去掉装饰圆圈和emoji遮罩 */
.case-img[data-has-image="true"]::before,
.case-img[data-has-image="true"]::after { display: none; }
.case-img[data-has-image="true"] { font-size: 0; }

/* service-icon：图片填满渐变方框 */
.service-icon { overflow: hidden; }
.service-icon[data-has-image="true"] .site-icon-img {
  border-radius: 16px;
}

/* feature-icon：图片填满浅色框 */
.feature-icon { overflow: hidden; }
.feature-icon[data-has-image="true"] .site-icon-img {
  border-radius: 20px;
}

/* 加载失败兜底：图加载不出来就还显示 emoji */
.site-icon-img.site-icon-img-broken { display: none; }
.site-icon-img.site-icon-img-broken + .site-icon-fallback { display: inline-block !important; }

/* ==========================================================================
   24. 服务卡片 — B2B 极简风（services.html 专用）
   大数字 + 行业 SVG 图标 + 玻璃拟态色块 + 数据贴纸
   ========================================================================== */
.service-detail-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--color-border);
}
.service-detail-card:last-of-type { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.service-detail-card[data-reversed="true"] .service-detail-visual { order: -1; }

/* 视觉区 — 玻璃拟态色块 */
.service-detail-visual {
  position: relative;
  border-radius: 16px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: transform 0.4s ease;
}
.service-detail-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--card-grad, linear-gradient(135deg, #1e40af, #3b82f6));
  opacity: 1;
}
.service-detail-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.18) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(255,255,255,0.06) 0%, transparent 50%);
  opacity: 1;
}
.service-detail-visual:hover { transform: translateY(-4px); }

/* 4 色变体 */
.service-detail-card[data-card-color="blue"]   { --card-grad: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%); --card-accent: #60a5fa; }
.service-detail-card[data-card-color="purple"] { --card-grad: linear-gradient(135deg, #6d28d9 0%, #a78bfa 100%); --card-accent: #c4b5fd; }
.service-detail-card[data-card-color="green"]  { --card-grad: linear-gradient(135deg, #047857 0%, #10b981 100%); --card-accent: #6ee7b7; }
.service-detail-card[data-card-color="orange"] { --card-grad: linear-gradient(135deg, #b45309 0%, #f59e0b 100%); --card-accent: #fcd34d; }

/* 大数字角标 */
.service-detail-num {
  position: absolute;
  top: 1.25rem;
  left: 1.5rem;
  font-size: 5rem;
  font-weight: 800;
  color: rgba(255,255,255,0.15);
  line-height: 1;
  letter-spacing: -0.05em;
  z-index: 2;
  font-variant-numeric: tabular-nums;
}

/* SVG 图标 */
.service-detail-svg {
  position: relative;
  z-index: 2;
  width: 100px;
  height: 100px;
  color: rgba(255,255,255,0.92);
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.15));
}

/* 数据贴纸 */
.service-detail-stat {
  position: absolute;
  bottom: 1.25rem;
  right: 1.5rem;
  z-index: 2;
  padding: 0.6rem 1rem;
  background: rgba(255,255,255,0.16);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 10px;
  color: #fff;
  font-size: 0.72rem;
  line-height: 1.4;
  text-align: right;
  letter-spacing: 0.02em;
}
.service-detail-stat strong {
  display: inline-block;
  font-size: 1.3rem;
  font-weight: 800;
  margin-right: 0.15rem;
  vertical-align: middle;
}

/* 内容区 */
.service-detail-content { padding: 0.5rem 0; }
.service-detail-title {
  font-size: 1.75rem;
  margin: 0.75rem 0;
  color: var(--color-dark);
  font-weight: 700;
}
.service-detail-features {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.service-detail-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: var(--color-bg-light);
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--color-text);
}
.service-detail-feature-check { font-weight: 700; flex-shrink: 0; }
.service-detail-flow {
  margin-top: 1.25rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* 响应式 */
@media (max-width: 768px) {
  .service-detail-card {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    padding-bottom: 2.5rem;
  }
  .service-detail-visual { height: 220px; order: 0 !important; }
  .service-detail-num { font-size: 3.5rem; }
  .service-detail-svg { width: 72px; height: 72px; }
  .service-detail-title { font-size: 1.4rem; }
  .service-detail-features { grid-template-columns: 1fr; }
}










/* ===== 文章页样式（由 build_news.py 维护） ===== */
.article-page .nav-tools .lang-toggle { display: none; }
.article-banner h1 { font-size: clamp(1.5rem, 3.4vw, 2.3rem); line-height: 1.4; max-width: 900px; }
.article-meta { opacity: .85; font-size: .92rem; margin-top: .75rem; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 3rem; align-items: start; }
.article-body { max-width: 760px; font-size: 1.02rem; line-height: 1.9; color: var(--color-text); }
.article-lead { font-size: 1.08rem; line-height: 1.85; padding: 1.1rem 1.3rem; background: rgba(59,130,246,.06); border-left: 4px solid var(--color-primary); border-radius: 8px; }
.article-body h2 { font-size: 1.4rem; margin: 2.4rem 0 1rem; padding-bottom: .5rem; border-bottom: 1px solid rgba(0,0,0,.08); }
.article-body h3 { font-size: 1.14rem; margin: 1.8rem 0 .7rem; }
.article-body p { margin: .85rem 0; }
.article-body ul, .article-body ol { margin: .9rem 0 .9rem 1.3rem; }
.article-body li { margin: .45rem 0; }
.article-body blockquote { margin: 1.3rem 0; padding: .9rem 1.2rem; background: rgba(0,0,0,.03); border-left: 3px solid var(--color-primary); border-radius: 6px; }
.article-body code { background: rgba(0,0,0,.06); padding: .1rem .35rem; border-radius: 4px; font-size: .92em; }
.article-body .table-wrap { overflow-x: auto; margin: 1.4rem 0; }
.article-body table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.article-body th, .article-body td { border: 1px solid rgba(0,0,0,.1); padding: .6rem .8rem; text-align: left; vertical-align: top; }
.article-body th { background: rgba(59,130,246,.08); font-weight: 600; }
.article-body .checklist { list-style: none; margin-left: 0; }
.article-body .checklist li::before { content: "☐ "; color: var(--color-primary); font-weight: 600; }
.article-body .checklist li.done::before { content: "☑ "; }
.faq-item { margin: 1.3rem 0; padding: 1.1rem 1.2rem; background: rgba(0,0,0,.025); border-radius: 10px; }
.faq-item h3 { margin: 0 0 .5rem; font-size: 1.06rem; }
.faq-item p { margin: 0; }
.article-aside { position: sticky; top: 90px; display: flex; flex-direction: column; gap: 1.25rem; }
.aside-card { border: 1px solid rgba(0,0,0,.08); border-radius: 12px; padding: 1.2rem 1.25rem; background: #fff; }
.aside-card h3 { font-size: 1rem; margin: 0 0 .6rem; }
.aside-card p { font-size: .9rem; line-height: 1.75; color: var(--color-text-light); margin: 0 0 .5rem; }
.aside-cta { background: linear-gradient(135deg, #1e40af, #3b82f6); border: none; }
.aside-cta h3, .aside-cta p { color: #fff; }
.aside-btn { display: block; text-align: center; background: #fff; color: #1e40af; font-weight: 600; padding: .7rem 1rem; border-radius: 8px; margin: .8rem 0 .5rem; }
.aside-tel { display: block; text-align: center; color: #fff; font-weight: 600; font-size: .95rem; }
.aside-meta { font-size: .85rem !important; }
.related-list { display: flex; flex-direction: column; gap: .7rem; }
.related-item { display: block; padding: .7rem .8rem; border-radius: 8px; background: rgba(0,0,0,.025); font-size: .92rem; line-height: 1.6; }
.related-item:hover { background: rgba(59,130,246,.1); }
.related-cat { display: block; font-size: .76rem; color: var(--color-primary); margin-bottom: .2rem; }
.related-title { color: var(--color-text); }
@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; gap: 2rem; }
  .article-aside { position: static; }
  .article-body { font-size: 1rem; }
}