:root {
  --color-primary: #1a1a2e;
  --color-primary-light: #2a2a4a;
  --color-accent: #f5a623;
  --color-accent-hover: #e0951c;
  --color-accent-glow: rgba(245, 166, 35, 0.35);
  --color-bg: #f8f9fc;
  --color-surface: #ffffff;
  --color-surface-glass: rgba(255, 255, 255, 0.72);
  --color-surface-glass-strong: rgba(255, 255, 255, 0.88);
  --color-text: #2d2d3a;
  --color-text-light: #6b6b7b;
  --color-border: #e4e6ef;
  --color-border-glass: rgba(255, 255, 255, 0.5);
  --color-success: #2ecc71;
  --color-star: #f5a623;
  --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 26, 46, 0.08);
  --shadow-lg: 0 12px 40px rgba(26, 26, 46, 0.12);
  --shadow-glow: 0 8px 32px rgba(245, 166, 35, 0.25);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --max-width: 1200px;
  --header-height: 68px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

[data-theme="dark"] {
  --color-primary: #0f0f1a;
  --color-primary-light: #1a1a2e;
  --color-accent: #f5a623;
  --color-accent-hover: #ffc04d;
  --color-accent-glow: rgba(245, 166, 35, 0.3);
  --color-bg: #12121c;
  --color-surface: #1c1c2a;
  --color-surface-glass: rgba(28, 28, 42, 0.72);
  --color-surface-glass-strong: rgba(28, 28, 42, 0.9);
  --color-text: #e8e8f0;
  --color-text-light: #9a9ab0;
  --color-border: #2a2a3e;
  --color-border-glass: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 8px 32px rgba(245, 166, 35, 0.2);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-height) + 16px);
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  font-size: 16px;
  transition: background-color 0.4s var(--ease-out), color 0.4s var(--ease-out);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.25s var(--ease-out);
}

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

ul,
ol {
  padding-left: 1.4em;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-surface-glass-strong);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--color-border-glass);
  box-shadow: var(--shadow-sm);
  transition: background 0.4s var(--ease-out), border-color 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.25s var(--ease-out), transform 0.25s var(--ease-spring);
}

.logo:hover {
  text-decoration: none;
  color: var(--color-accent);
  transform: scale(1.02);
}

.logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  transition: transform 0.4s var(--ease-spring);
}

.logo:hover svg {
  transform: rotate(-8deg) scale(1.08);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-menu a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  position: relative;
  transition: background 0.25s var(--ease-out), color 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}

.nav-menu a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: width 0.3s var(--ease-out);
}

.nav-menu a:hover {
  background: var(--color-bg);
  color: var(--color-accent);
  text-decoration: none;
  transform: translateY(-1px);
}

.nav-menu a:hover::after {
  width: 40%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 4px 4px 4px 14px;
  transition: border-color 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}

.search-box:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
  transform: translateY(-1px);
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 0.9rem;
  color: var(--color-text);
  width: 150px;
  padding: 4px 0;
  font-family: inherit;
}

.search-box input::placeholder {
  color: var(--color-text-light);
}

.search-box button {
  border: none;
  background: var(--color-accent);
  color: #1a1a2e;
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.25s var(--ease-out), transform 0.2s var(--ease-spring), box-shadow 0.25s var(--ease-out);
  font-family: inherit;
}

.search-box button:hover {
  background: var(--color-accent-hover);
  transform: scale(1.04);
  box-shadow: var(--shadow-glow);
}

.search-box button:active {
  transform: scale(0.97);
}

.theme-toggle {
  border: 1px solid var(--color-border);
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--color-text);
  border-radius: var(--radius-pill);
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  transition: background 0.25s var(--ease-out), border-color 0.25s var(--ease-out), transform 0.3s var(--ease-spring), box-shadow 0.25s var(--ease-out);
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--color-bg);
  transform: rotate(20deg) scale(1.08);
  box-shadow: var(--shadow-sm);
}

.theme-toggle:active {
  transform: rotate(20deg) scale(0.95);
}

.mobile-menu-btn {
  display: none;
  border: 1px solid var(--color-border);
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: background 0.25s var(--ease-out), transform 0.25s var(--ease-out);
}

.mobile-menu-btn:hover {
  background: var(--color-bg);
}

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 14px 0;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 4px;
}

.breadcrumb li + li::before {
  content: "›";
  color: var(--color-text-light);
  margin-right: 4px;
}

.breadcrumb a {
  color: var(--color-text-light);
}

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

.breadcrumb [aria-current="page"] {
  color: var(--color-text);
  font-weight: 500;
}

/* ===== 主内容 ===== */
main {
  display: block;
}

section {
  padding: 56px 0;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.3;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 48px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
  max-width: 720px;
  margin-top: 16px;
}

/* ===== Banner轮播 ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #1a1a2e 0%, #2a2a4a 40%, #3d2a5c 70%, #1a1a2e 100%);
  background-size: 200% 200%;
  animation: heroGradient 14s ease infinite;
  color: #fff;
  overflow: hidden;
  padding: 0;
}

@keyframes heroGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 25%, rgba(245, 166, 35, 0.18), transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(120, 80, 220, 0.22), transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(245, 166, 35, 0.06), transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(2px 2px at 20% 30%, rgba(255, 255, 255, 0.6), transparent),
    radial-gradient(2px 2px at 60% 20%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1.5px 1.5px at 80% 60%, rgba(255, 255, 255, 0.5), transparent),
    radial-gradient(2px 2px at 35% 75%, rgba(255, 255, 255, 0.35), transparent),
    radial-gradient(1.5px 1.5px at 90% 35%, rgba(255, 255, 255, 0.45), transparent),
    radial-gradient(2px 2px at 10% 85%, rgba(255, 255, 255, 0.3), transparent);
  pointer-events: none;
  animation: twinkle 5s ease-in-out infinite alternate;
}

@keyframes twinkle {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

.hero-slider {
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: center;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  display: flex;
  align-items: center;
  padding: 56px 0;
  pointer-events: none;
}

.hero-slide.active {
  opacity: 1;
  transform: translateY(0);
  position: relative;
  pointer-events: auto;
}

.hero-slide .container {
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
  color: #fff;
  max-width: 680px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
  background: linear-gradient(120deg, #ffffff 30%, #ffd98a 70%, #ffffff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  margin-bottom: 28px;
  line-height: 1.8;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--color-accent), #ffc04d);
  color: #1a1a2e;
  font-weight: 700;
  padding: 13px 30px;
  border-radius: var(--radius-pill);
  font-size: 1rem;
  text-decoration: none;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s var(--ease-out), background 0.3s var(--ease-out);
  border: none;
  cursor: pointer;
  box-shadow: 0 6px 24px rgba(245, 166, 35, 0.35);
  position: relative;
  overflow: hidden;
}

.hero-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.6s var(--ease-out);
}

.hero-cta:hover {
  color: #1a1a2e;
  text-decoration: none;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 36px rgba(245, 166, 35, 0.5);
}

.hero-cta:hover::before {
  left: 100%;
}

.hero-cta:active {
  transform: translateY(-1px) scale(0.99);
}

.hero-dots {
  position: absolute;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.hero-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.35);
  border: none;
  cursor: pointer;
  transition: background 0.35s var(--ease-out), width 0.35s var(--ease-out), transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
  padding: 0;
}

.hero-dot:hover {
  background: rgba(255, 255, 255, 0.6);
}

.hero-dot.active {
  background: var(--color-accent);
  width: 28px;
  transform: scale(1);
  box-shadow: 0 0 12px var(--color-accent-glow);
}

/* ===== 统计数字 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 8px;
}

.stat-card {
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  padding: 26px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease-spring), box-shadow 0.35s var(--ease-out), border-color 0.35s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #ffc04d);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out);
}

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

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

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 6px;
}

/* ===== 品牌介绍 ===== */
.brand-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.brand-intro-text h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 18px;
  line-height: 1.3;
}

.brand-intro-text p {
  margin-bottom: 14px;
  color: var(--color-text-light);
  font-size: 0.98rem;
  line-height: 1.85;
}

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

.brand-intro-visual svg {
  width: 100%;
  max-width: 360px;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: transform 0.5s var(--ease-spring), box-shadow 0.5s var(--ease-out);
}

.brand-intro-visual svg:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 20px 56px rgba(26, 26, 46, 0.2);
}

/* ===== 产品/服务卡片 ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--color-accent-glow), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s var(--ease-out);
  pointer-events: none;
}

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

.card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-accent), #ffc04d);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  flex-shrink: 0;
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s var(--ease-out);
  box-shadow: 0 4px 14px rgba(245, 166, 35, 0.3);
  position: relative;
  z-index: 1;
}

.card:hover .card-icon {
  transform: rotate(-6deg) scale(1.1);
  box-shadow: 0 8px 24px rgba(245, 166, 35, 0.45);
}

.card-icon svg {
  width: 26px;
  height: 26px;
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
  position: relative;
  z-index: 1;
}

.card p {
  font-size: 0.92rem;
  color: var(--color-text-light);
  flex: 1;
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

/* ===== 文章列表 ===== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.article-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--color-accent), #ffc04d);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.4s var(--ease-out);
  border-radius: 0 3px 3px 0;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.article-card:hover::after {
  transform: scaleY(1);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.article-tag {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 3px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: background 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}

.article-card:hover .article-tag {
  background: var(--color-accent);
  color: #1a1a2e;
  border-color: var(--color-accent);
}

.article-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.45;
}

.article-card h3 a {
  color: var(--color-text);
  transition: color 0.25s var(--ease-out);
}

.article-card h3 a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.article-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  flex: 1;
  margin-bottom: 16px;
  line-height: 1.8;
}

.read-more {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  align-self: flex-start;
  transition: gap 0.3s var(--ease-spring), color 0.25s var(--ease-out);
}

.read-more:hover {
  text-decoration: none;
  gap: 10px;
  color: var(--color-accent-hover);
}

/* ===== FAQ ===== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 860px;
}

.faq-item {
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.faq-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.faq-item.open {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  font-family: inherit;
  line-height: 1.5;
  transition: color 0.25s var(--ease-out);
}

.faq-question:hover {
  color: var(--color-accent);
}

.faq-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--color-accent);
  background: var(--color-bg);
  border-radius: 50%;
  transition: transform 0.35s var(--ease-spring), background 0.3s var(--ease-out);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--color-accent);
  color: #1a1a2e;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease-out), padding 0.35s var(--ease-out);
  padding: 0 22px;
}

.faq-item.open .faq-answer {
  max-height: 600px;
  padding: 0 22px 20px;
}

.faq-answer p {
  font-size: 0.93rem;
  color: var(--color-text-light);
  line-height: 1.85;
}

/* ===== HowTo ===== */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  counter-reset: step;
}

.howto-step {
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  padding: 26px 20px;
  position: relative;
  counter-increment: step;
  box-shadow: var(--shadow-sm);
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
}

.howto-step:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.howto-step::before {
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #ffc04d);
  color: #1a1a2e;
  font-weight: 800;
  font-size: 1rem;
  margin-bottom: 16px;
  box-shadow: 0 4px 14px rgba(245, 166, 35, 0.3);
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s var(--ease-out);
}

.howto-step:hover::before {
  transform: scale(1.12) rotate(-6deg);
  box-shadow: 0 8px 24px rgba(245, 166, 35, 0.45);
}

.howto-step h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.howto-step p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.75;
}

/* ===== 客户评价 ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.4s var(--ease-spring), box-shadow 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.testimonial-card::before {
  content: "\201C";
  position: absolute;
  top: -10px;
  right: 16px;
  font-size: 5rem;
  font-family: Georgia, serif;
  color: var(--color-accent);
  opacity: 0.08;
  line-height: 1;
  pointer-events: none;
}

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

.testimonial-stars {
  color: var(--color-star);
  font-size: 1rem;
  letter-spacing: 3px;
  text-shadow: 0 1px 3px rgba(245, 166, 35, 0.3);
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.85;
  flex: 1;
  font-style: italic;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.testimonial-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #ffc04d);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #1a1a2e;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(245, 166, 35, 0.3);
  transition: transform 0.35s var(--ease-spring);
}

.testimonial-card:hover .testimonial-avatar {
  transform: scale(1.1);
}

.testimonial-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.testimonial-role {
  font-size: 0.78rem;
  color: var(--color-text-light);
}

/* ===== 新闻中心 ===== */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-item {
  display: flex;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
  transition: padding-left 0.3s var(--ease-out), background 0.3s var(--ease-out);
  border-radius: var(--radius-sm);
}

.news-item:hover {
  padding-left: 12px;
  background: var(--color-surface-glass);
}

.news-item:last-child {
  border-bottom: none;
}

.news-date {
  flex-shrink: 0;
  width: 76px;
  text-align: center;
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-sm);
  padding: 10px 4px;
  border: 1px solid var(--color-border);
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.news-item:hover .news-date {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.news-date .day {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.1;
  display: block;
}

.news-date .month-year {
  font-size: 0.72rem;
  color: var(--color-text-light);
  display: block;
}

.news-content h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.45;
}

.news-content h3 a {
  color: var(--color-text);
  transition: color 0.25s var(--ease-out);
}

.news-content h3 a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.news-content p {
  font-size: 0.86rem;
  color: var(--color-text-light);
  line-height: 1.75;
}

/* ===== 联系我们 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-info-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 12px;
  border-radius: var(--radius-sm);
  transition: background 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.contact-info-item:hover {
  background: var(--color-surface-glass);
  transform: translateX(4px);
}

.contact-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
  transition: transform 0.35s var(--ease-spring), border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.contact-info-item:hover .contact-icon {
  transform: scale(1.1) rotate(-4deg);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
}

.contact-info-item strong {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 2px;
}

.contact-info-item span {
  font-size: 0.88rem;
  color: var(--color-text-light);
}

.contact-form {
  background: var(--color-surface-glass);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-md);
  transition: box-shadow 0.4s var(--ease-out);
}

.contact-form:hover {
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), background 0.25s var(--ease-out);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
  background: var(--color-surface);
}

.form-group textarea {
  resize: vertical;
  min-height: 110px;
}

.form-submit {
  width: 100%;
  padding: 13px;
  background: linear-gradient(135deg, var(--color-accent), #ffc04d);
  color: #1a1a2e;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s var(--ease-out), background 0.3s var(--ease-out);
  box-shadow: 0 4px 16px rgba(245, 166, 35, 0.3);
  position: relative;
  overflow: hidden;
}

.form-submit::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transition: left 0.6s var(--ease-out);
}

.form-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(245, 166, 35, 0.45);
}

.form-submit:hover::before {
  left: 100%;
}

.form-submit:active {
  transform: translateY(0) scale(0.99);
}

/* ===== 页脚 ===== */
.site-footer {
  background: linear-gradient(180deg, var(--color-primary) 0%, #0f0f1a 100%);
  color: rgba(255, 255, 255, 0.75);
  padding: 52px 0 26px;
  margin-top: 56px;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.5;
}

[data-theme="dark"] .site-footer {
  background: linear-gradient(180deg, #0a0a12 0%, #06060c 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  color: #fff;
  font-size: 1.15rem;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand h3 svg {
  transition: transform 0.4s var(--ease-spring);
}

.footer-brand:hover h3 svg {
  transform: rotate(-10deg) scale(1.1);
}

.footer-brand p {
  font-size: 0.86rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.6);
}

.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 16px;
  font-weight: 600;
  position: relative;
  display: inline-block;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.86rem;
  text-decoration: none;
  transition: color 0.25s var(--ease-out), padding-left 0.25s var(--ease-out);
  display: inline-block;
}

.footer-col a:hover {
  color: var(--color-accent);
  text-decoration: none;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 22px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
}

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

/* ===== 返回顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #ffc04d);
  color: #1a1a2e;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 6px 24px rgba(245, 166, 35, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity 0.35s var(--ease-out), visibility 0.35s var(--ease-out), transform 0.35s var(--ease-spring), box-shadow 0.3s var(--ease-out);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 12px 36px rgba(245, 166, 35, 0.55);
}

.back-to-top:active {
  transform: translateY(-2px) scale(0.98);
}

/* ===== 滚动动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式：平板 ===== */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .howto-steps {
    grid-template-columns: repeat(3, 1fr);
  }
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== 响应式：手机 ===== */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-surface-glass-strong);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    flex-direction: column;
    padding: 12px 20px 20px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    gap: 2px;
    animation: menuSlide 0.3s var(--ease-out);
  }
  @keyframes menuSlide {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-menu a {
    padding: 12px 14px;
    width: 100%;
    border-radius: var(--radius-sm);
  }
  .mobile-menu-btn {
    display: flex;
  }
  .search-box input {
    width: 100px;
  }
  .hero h1 {
    font-size: 1.6rem;
  }
  .hero p {
    font-size: 0.95rem;
  }
  .hero-slider {
    min-height: 340px;
  }
  .brand-intro {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .brand-intro-visual {
    order: -1;
  }
  .cards-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .howto-steps {
    grid-template-columns: 1fr 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .news-item {
    flex-direction: column;
    gap: 10px;
  }
  .news-date {
    width: auto;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
  }
  .news-date .day {
    font-size: 1rem;
  }
  .section-title {
    font-size: 1.4rem;
  }
  .back-to-top {
    bottom: 18px;
    right: 18px;
    width: 44px;
    height: 44px;
  }
}

/* ===== 响应式：小屏手机 ===== */
@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-number {
    font-size: 1.5rem;
  }
  .howto-steps {
    grid-template-columns: 1fr;
  }
  .header-inner {
    gap: 8px;
  }
  .search-box {
    display: none;
  }
  .hero h1 {
    font-size: 1.35rem;
  }
  .hero-slider {
    min-height: 300px;
  }
  .hero-cta {
    padding: 11px 24px;
    font-size: 0.92rem;
  }
}

/* ===== 减少动画偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== 打印样式 ===== */
@media print {
  .site-header,
  .back-to-top,
  .hero-dots,
  .mobile-menu-btn,
  .theme-toggle {
    display: none;
  }
  body {
    background: #fff;
    color: #000;
  }
  .card,
  .article-card,
  .stat-card,
  .faq-item {
    box-shadow: none;
    border: 1px solid #ccc;
  }
}