:root {
  --brand: #1a6b3c;
  --brand-dark: #0f4a28;
  --brand-light: #2e8b57;
  --brand-glow: rgba(26, 107, 60, 0.35);
  --accent: #f0a500;
  --accent-light: #ffc233;
  --accent-glow: rgba(240, 165, 0, 0.4);
  --bg: #f7faf8;
  --bg-alt: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --text: #1c2b22;
  --text-muted: #5a6e61;
  --border: #dbe8df;
  --border-glass: rgba(255, 255, 255, 0.5);
  --card-shadow: 0 2px 12px rgba(26, 107, 60, 0.08);
  --card-shadow-hover: 0 12px 32px rgba(26, 107, 60, 0.16);
  --radius: 10px;
  --radius-lg: 18px;
  --radius-pill: 24px;
  --max-width: 1200px;
  --nav-height: 64px;
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

body.dark-mode {
  --bg: #0e1511;
  --bg-alt: #16201a;
  --bg-glass: rgba(22, 32, 26, 0.72);
  --text: #e2ede6;
  --text-muted: #9db3a5;
  --border: #2a3d31;
  --border-glass: rgba(42, 61, 49, 0.6);
  --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
  --card-shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.5);
  --brand-glow: rgba(46, 139, 87, 0.3);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background var(--transition-smooth), color var(--transition-smooth);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 10% 0%, rgba(46, 139, 87, 0.09), transparent 60%),
    radial-gradient(ellipse 50% 45% at 90% 10%, rgba(240, 165, 0, 0.07), transparent 60%),
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(26, 107, 60, 0.06), transparent 65%);
}

body.dark-mode::before {
  background:
    radial-gradient(ellipse 60% 50% at 10% 0%, rgba(46, 139, 87, 0.12), transparent 60%),
    radial-gradient(ellipse 50% 45% at 90% 10%, rgba(240, 165, 0, 0.08), transparent 60%),
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(26, 107, 60, 0.1), transparent 65%);
}

a {
  color: var(--brand);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

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

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

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

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

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

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

/* ============ 顶部导航（毛玻璃） ============ */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-glass);
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  transition: background var(--transition-smooth), border-color var(--transition-smooth);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: 12px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--brand);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.nav-logo:hover {
  transform: scale(1.02);
}

.nav-logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 10px;
  filter: drop-shadow(0 2px 6px var(--brand-glow));
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-links a {
  display: block;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  color: var(--text-muted);
  white-space: nowrap;
  position: relative;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  transform: translateX(-50%);
  transition: width var(--transition-smooth);
}

.nav-links a:hover {
  background: rgba(26, 107, 60, 0.08);
  color: var(--brand);
}

.nav-links a:hover::after {
  width: 60%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box input {
  padding: 8px 36px 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--bg);
  color: var(--text);
  font-size: 0.88rem;
  width: 180px;
  outline: none;
  font-family: inherit;
  transition: width var(--transition-smooth), border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-smooth);
}

.search-box input::placeholder {
  color: var(--text-muted);
  opacity: 0.8;
}

.search-box input:focus {
  width: 240px;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-glow);
}

.search-box button {
  position: absolute;
  right: 6px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  display: flex;
  align-items: center;
  border-radius: 50%;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.search-box button:hover {
  color: var(--brand);
  transform: scale(1.12);
}

.dark-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 38px;
  height: 38px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-smooth), background var(--transition-fast);
}

.dark-toggle:hover {
  border-color: var(--brand);
  color: var(--brand);
  transform: rotate(20deg) scale(1.08);
  background: rgba(26, 107, 60, 0.08);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text);
  border-radius: 8px;
  transition: background var(--transition-fast);
}

.menu-toggle:hover {
  background: rgba(26, 107, 60, 0.08);
}

/* ============ 面包屑 ============ */
.breadcrumb {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

.breadcrumb li + li::before {
  content: "›";
  margin: 0 6px;
  color: var(--border);
}

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

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

/* ============ Banner 轮播（渐变 + 毛玻璃） ============ */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--brand-dark) 0%, var(--brand) 45%, var(--brand-light) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  margin: 0 auto 36px;
  max-width: var(--max-width);
  box-shadow: 0 20px 50px -20px var(--brand-glow);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 15%, rgba(240, 165, 0, 0.28), transparent 45%),
    radial-gradient(circle at 15% 85%, rgba(255, 255, 255, 0.12), transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(0, 0, 0, 0.12));
  pointer-events: none;
}

.hero-slides {
  position: relative;
  min-height: 380px;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.7s ease;
  display: flex;
  align-items: center;
  padding: 48px;
  gap: 40px;
  pointer-events: none;
}

.hero-slide.active {
  opacity: 1;
  position: relative;
  pointer-events: auto;
}

.hero-slide-content {
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 2;
  animation: heroFadeUp 0.7s ease both;
}

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-slide .hero-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 20px;
  padding: 5px 16px;
  font-size: 0.8rem;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero-slide h2 {
  font-size: 1.9rem;
  line-height: 1.3;
  margin-bottom: 14px;
  font-weight: 700;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
}

.hero-slide p {
  font-size: 1rem;
  opacity: 0.92;
  margin-bottom: 22px;
  max-width: 520px;
}

.hero-cta {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #1c2b22;
  font-weight: 700;
  padding: 12px 30px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  box-shadow: 0 8px 22px -6px var(--accent-glow);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), filter var(--transition-fast);
}

.hero-cta:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 14px 30px -8px var(--accent-glow);
  color: #1c2b22;
  filter: brightness(1.05);
}

.hero-slide-art {
  flex: 0 0 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
  animation: heroFloat 5s ease-in-out infinite;
}

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

.hero-slide-art svg {
  filter: drop-shadow(0 12px 30px rgba(0, 0, 0, 0.25));
}

.hero-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 5;
}

.hero-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.6);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-smooth);
}

.hero-dots button:hover {
  border-color: #fff;
  transform: scale(1.2);
}

.hero-dots button.active {
  background: #fff;
  border-color: #fff;
  width: 28px;
  border-radius: 6px;
}

/* ============ 通用区块 ============ */
section {
  padding: 48px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 36px;
}

.section-header h2 {
  font-size: 1.6rem;
  color: var(--brand);
  margin-bottom: 10px;
  font-weight: 700;
  position: relative;
  display: inline-block;
  padding-bottom: 12px;
}

.section-header h2::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 56px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
}

.section-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 680px;
  margin: 0 auto;
}

/* ============ 卡片（圆角 + 毛玻璃 + hover） ============ */
.card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--card-shadow);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
  border-color: rgba(26, 107, 60, 0.25);
}

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

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

.stat-item {
  text-align: center;
  padding: 24px 12px;
}

.stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--brand);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-num .suffix {
  font-size: 1.2rem;
  font-weight: 600;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ============ 产品卡片 ============ */
.product-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.product-card .icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(26, 107, 60, 0.12), rgba(240, 165, 0, 0.1));
  flex-shrink: 0;
  transition: transform var(--transition-smooth), background var(--transition-fast);
}

.card:hover .icon-wrap {
  transform: scale(1.08) rotate(-4deg);
  background: linear-gradient(135deg, rgba(26, 107, 60, 0.2), rgba(240, 165, 0, 0.16));
}

.product-card h3 {
  font-size: 1.05rem;
  color: var(--text);
  font-weight: 700;
}

.product-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============ 解决方案 ============ */
.solution-item {
  display: flex;
  gap: 18px;
  padding: 22px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  align-items: flex-start;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.solution-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--brand), var(--accent));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-smooth);
}

.solution-item:hover {
  transform: translateX(6px);
  box-shadow: var(--card-shadow-hover);
  border-color: rgba(26, 107, 60, 0.25);
}

.solution-item:hover::after {
  transform: scaleY(1);
}

.solution-item .sol-num {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(240, 165, 0, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.solution-item:hover .sol-num {
  background: var(--accent);
  color: #1c2b22;
}

.solution-item h3 {
  font-size: 1rem;
  margin-bottom: 6px;
  font-weight: 700;
}

.solution-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ============ 案例卡片 ============ */
.case-card {
  overflow: hidden;
  padding: 0;
}

.case-card .case-head {
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  padding: 20px 24px;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.case-card .case-head::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(240, 165, 0, 0.25);
  filter: blur(6px);
  transition: transform var(--transition-smooth);
}

.case-card:hover .case-head::after {
  transform: scale(1.4) translate(-10px, 10px);
}

.case-card .case-head h3 {
  font-size: 1.05rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.case-card .case-head span {
  font-size: 0.8rem;
  opacity: 0.85;
  position: relative;
  z-index: 1;
}

.case-card .case-body {
  padding: 20px 24px;
}

.case-card .case-body p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.case-meta span {
  background: rgba(26, 107, 60, 0.08);
  padding: 3px 10px;
  border-radius: 12px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.case-meta span:hover {
  background: var(--brand);
  color: #fff;
}

/* ============ 评价卡片 ============ */
.review-card {
  position: relative;
}

.review-card .quote-mark {
  font-size: 2.4rem;
  color: var(--accent);
  line-height: 1;
  font-family: Georgia, serif;
  opacity: 0.85;
}

.review-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 10px 0 16px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px var(--brand-glow);
  transition: transform var(--transition-smooth);
}

.review-card:hover .review-avatar {
  transform: scale(1.1) rotate(6deg);
}

.review-author-info strong {
  display: block;
  font-size: 0.88rem;
}

.review-author-info span {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============ 文章卡片 ============ */
.article-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.article-card .article-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  gap: 12px;
}

.article-card .article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-card h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
}

.article-card h3 a {
  color: var(--text);
  transition: color var(--transition-fast);
}

.article-card h3 a:hover {
  color: var(--brand);
}

.article-card .article-summary {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.article-card .read-more {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition-smooth), color var(--transition-fast);
}

.article-card .read-more:hover {
  gap: 10px;
  color: var(--accent);
}

/* ============ FAQ 手风琴 ============ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: border-color var(--transition-fast), box-shadow var(--transition-smooth);
}

.faq-item:hover {
  border-color: rgba(26, 107, 60, 0.25);
}

.faq-item.open {
  border-color: var(--brand);
  box-shadow: 0 8px 26px -10px var(--brand-glow);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 18px 22px;
  background: none;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-family: inherit;
  line-height: 1.5;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.faq-question:hover {
  color: var(--brand);
  background: rgba(26, 107, 60, 0.04);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  transition: transform var(--transition-smooth), color var(--transition-fast);
  color: var(--brand);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq-answer-inner {
  padding: 0 22px 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px dashed var(--border);
  padding-top: 16px;
  margin: 0 22px 20px;
  padding-left: 0;
  padding-right: 0;
}

.faq-item.open .faq-answer {
  max-height: 700px;
}

/* ============ HowTo 步骤 ============ */
.howto-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.howto-step {
  display: flex;
  gap: 20px;
  padding: 22px 0;
  position: relative;
  transition: transform var(--transition-smooth);
}

.howto-step:hover {
  transform: translateX(6px);
}

.howto-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 22px;
  top: 66px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--brand), var(--border));
}

.howto-step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
  font-size: 1rem;
  position: relative;
  z-index: 1;
  box-shadow: 0 6px 16px -6px var(--brand-glow);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.howto-step:hover .howto-step-num {
  transform: scale(1.12);
  box-shadow: 0 10px 24px -6px var(--brand-glow);
}

.howto-step-content h3 {
  font-size: 1rem;
  margin-bottom: 6px;
  font-weight: 700;
}

.howto-step-content p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ============ 信息表格 ============ */
.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.info-table th,
.info-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition-fast);
}

.info-table th {
  background: rgba(26, 107, 60, 0.06);
  font-weight: 600;
  color: var(--brand);
  white-space: nowrap;
}

.info-table td {
  color: var(--text-muted);
}

.info-table tbody tr:hover td {
  background: rgba(26, 107, 60, 0.04);
}

.info-table tbody tr:last-child th,
.info-table tbody tr:last-child td {
  border-bottom: none;
}

/* ============ 页脚 ============ */
.site-footer {
  background: linear-gradient(180deg, var(--brand-dark), #0a3520);
  color: rgba(255, 255, 255, 0.82);
  padding: 48px 0 0;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--accent), var(--brand));
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 32px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 16px;
  font-weight: 700;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

.footer-col ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col ul li {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.footer-col ul a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
  display: inline-block;
}

.footer-col ul a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}

.footer-col p {
  font-size: 0.85rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 36px;
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom p {
  line-height: 1.7;
}

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

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

/* ============ 返回顶部 ============ */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 28px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px var(--brand-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition-smooth), visibility var(--transition-smooth), transform var(--transition-smooth), background var(--transition-fast);
  z-index: 900;
}

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

.back-top:hover {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #1c2b22;
  transform: translateY(-4px) scale(1.08);
}

/* ============ 滚动动画 ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

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

/* ============ 锚点导航 ============ */
.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 28px;
}

.anchor-nav a {
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-smooth);
}

.anchor-nav a:hover {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
  transform: translateY(-2px);
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .nav-links {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border);
    padding: 12px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
    gap: 2px;
    animation: menuDrop 0.3s ease both;
  }

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

  .nav-links.mobile-open a {
    padding: 12px 16px;
    border-radius: 8px;
  }

  .nav-links.mobile-open a::after {
    display: none;
  }

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

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

  .hero-slide {
    flex-direction: column;
    padding: 36px 28px;
    text-align: center;
  }

  .hero-slide-art {
    flex: 0 0 auto;
    order: -1;
  }

  .hero-slide-art svg {
    width: 160px;
    height: 160px;
  }

  .hero-slide p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-slide .hero-tag {
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .search-box input {
    width: 150px;
  }

  .search-box input:focus {
    width: 190px;
  }

  .section-header h2 {
    font-size: 1.4rem;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

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

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

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

  .search-box input {
    width: 120px;
  }

  .search-box input:focus {
    width: 160px;
  }

  .hero-slide h2 {
    font-size: 1.4rem;
  }

  .hero-slides {
    min-height: auto;
  }

  .hero-slide {
    padding: 28px 20px;
    gap: 24px;
  }

  .hero-slide-art svg {
    width: 130px;
    height: 130px;
  }

  .hero-cta {
    padding: 11px 24px;
    font-size: 0.9rem;
  }

  .section-header h2 {
    font-size: 1.3rem;
  }

  .howto-step:not(:last-child)::after {
    left: 20px;
  }

  .back-top {
    right: 16px;
    bottom: 20px;
    width: 42px;
    height: 42px;
  }

  .card {
    padding: 20px;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 400px) {
  .nav-logo span {
    font-size: 1rem;
  }

  .search-box {
    display: none;
  }

  .hero-slide h2 {
    font-size: 1.25rem;
  }
}

/* ============ 无障碍与动效偏好 ============ */
@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 {
  .top-nav,
  .back-top,
  .hero-dots,
  .dark-toggle,
  .menu-toggle,
  .search-box {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .card,
  .faq-item,
  .solution-item {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}