```css
/* =============================================
   HSCK CC — 智联万象，芯创未来
   Design System: Warm Editorial Terracotta
   Unique identity: mid-century editorial × modern tech
   ============================================= */

/* 基础重置 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: #F7F2E7;
  color: #2A3C3B;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: #E65C3D;
  color: #FFF;
}

/* 自定义滚动条 */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #F0E9DA; }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #E65C3D, #D9A441);
  border-radius: 4px;
  border: 2px solid #F0E9DA;
}

/* =============================================
   核心布局
   ============================================= */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 90px 0;
  position: relative;
}

.section:nth-child(even) {
  background: #EFE8DA;
}

/* =============================================
   导航 — 固定顶部
   ============================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(247, 242, 231, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(229, 218, 204, 0.7);
  transition: box-shadow 0.3s ease;
}

.site-header:hover {
  box-shadow: 0 4px 30px rgba(42, 60, 59, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  text-decoration: none;
  color: #2A3C3B;
  letter-spacing: -0.03em;
  transition: opacity 0.2s;
}

.logo:hover { opacity: 0.8; }

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 14px 6px 14px 6px;
  background: linear-gradient(135deg, #E65C3D 0%, #D9A441 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFF;
  font-size: 1rem;
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(230, 92, 61, 0.3);
  transform: rotate(-3deg);
  transition: transform 0.3s ease;
}

.logo:hover .logo-icon { transform: rotate(3deg) scale(1.05); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: #2A3C3B;
  position: relative;
  padding: 4px 0;
  transition: color 0.25s ease;
  letter-spacing: 0.02em;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #E65C3D;
  border-radius: 2px;
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-nav a:hover {
  color: #E65C3D;
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 9px 24px;
  border-radius: 100px;
  background: #E65C3D;
  color: #fff !important;
  font-weight: 600;
  font-size: 0.88rem !important;
  box-shadow: 0 4px 14px rgba(230, 92, 61, 0.28);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.nav-cta::after { display: none; }

.nav-cta:hover {
  background: #C7472C;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 92, 61, 0.35);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0 8px;
  border-radius: 12px;
}

.menu-toggle::before,
.menu-toggle::after {
  content: '';
  display: block;
  width: 100%;
  height: 2px;
  background: #2A3C3B;
  border-radius: 2px;
  transition: all 0.3s;
}

.menu-toggle::before {
  box-shadow: 0 8px 0 #2A3C3B;
}

/* =============================================
   首页 Hero
   ============================================= */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 120px 0 80px;
  background:
    radial-gradient(circle at 85% 30%, rgba(217, 164, 65, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 15% 80%, rgba(230, 92, 61, 0.08) 0%, transparent 45%);
}

.hero::before {
  content: '芯';
  position: absolute;
  top: 50%;
  right: 4%;
  transform: translateY(-50%) rotate(10deg);
  font-size: 20rem;
  font-weight: 900;
  line-height: 1;
  color: rgba(42, 60, 59, 0.035);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  top: -100px;
  right: -60px;
  width: 380px;
  height: 380px;
  background: #E65C3D;
  border-radius: 63% 37% 30% 70% / 50% 60% 40% 50%;
  opacity: 0.05;
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  max-width: 760px;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 100px;
  background: #E65C3D;
  color: #FFF;
  margin-bottom: 24px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: 0 4px 16px rgba(230, 92, 61, 0.25);
}

.hero-eyebrow::before {
  content: '●';
  font-size: 0.5rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  font-size: 3.6rem;
  font-weight: 900;
  line-height: 1.12;
  margin-bottom: 22px;
  letter-spacing: -0.03em;
  color: #2A3C3B;
  position: relative;
}

.hero h1::before {
  content: '✦';
  font-size: 0.3em;
  vertical-align: super;
  color: #D9A441;
  margin-right: 4px;
  display: inline-block;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.hero p {
  font-size: 1.15rem;
  color: #3D6C65;
  opacity: 0.85;
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
}

.hero-image {
  border-radius: 24px 8px 24px 8px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 20px 60px rgba(42, 60, 59, 0.12);
  border: 4px solid #FFFCF6;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* =============================================
   按钮
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '→';
  font-size: 1.1em;
  transition: transform 0.3s;
}

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

.btn-primary {
  background: linear-gradient(135deg, #E65C3D 0%, #D9A441 120%);
  color: #fff;
  box-shadow: 0 8px 24px rgba(230, 92, 61, 0.32);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 16px 32px rgba(230, 92, 61, 0.4);
}

.btn-outline {
  background: transparent;
  border: 2px solid #3D6C65;
  color: #3D6C65;
  box-shadow: none;
}

.btn-outline::after {
  content: '↗';
  font-size: 1.05em;
}

.btn-outline:hover {
  background: #3D6C65;
  color: #FFF;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(61, 108, 101, 0.25);
}

.btn-outline:hover::after {
  content: '↗';
  transform: translate(2px, -2px);
}

/* =============================================
   标签 / 标题
   ============================================= */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #E65C3D;
  margin-bottom: 16px;
  position: relative;
}

.section-label::before {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, #E65C3D, #D9A441);
  border-radius: 2px;
}

.section-label::after {
  content: '☆';
  font-size: 0.9rem;
  color: #D9A441;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  color: #2A3C3B;
  position: relative;
}

.section-desc {
  max-width: 640px;
  color: #3D6C65;
  opacity: 0.8;
  margin-bottom: 48px;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* =============================================
   卡片网格
   ============================================= */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 28px;
}

.category-card {
  background: #FFFCF6;
  border-radius: 20px 8px 20px 8px;
  padding: 30px;
  border: 1px solid #E5DACC;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 30px;
  right: 30px;
  height: 3px;
  background: linear-gradient(90deg, #E65C3D, #D9A441);
  border-radius: 0 0 6px 6px;
  transform: scaleX(0.4);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 90px;
  height: 90px;
  background: rgba(230, 92, 61, 0.04);
  border-radius: 50%;
  transition: transform 0.4s;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(42, 60, 59, 0.1);
  border-color: rgba(230, 92, 61, 0.3);
}

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

.category-card:hover::after {
  transform: scale(1.6);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px 6px 16px 6px;
  background: linear-gradient(135deg, rgba(230, 92, 61, 0.12), rgba(217, 164, 65, 0.12));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.4rem;
  transition: transform 0.3s;
}

.category-card:hover .card-icon {
  transform: rotate(-6deg) scale(1.05);
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #2A3C3B;
}

.category-card p {
  font-size: 0.9rem;
  color: #3D6C65;
  opacity: 0.75;
  line-height: 1.6;
  margin-bottom: 16px;
}

.card-link {
  font-weight: 600;
  font-size: 0.88rem;
  text-decoration: none;
  color: #E65C3D;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s;
}

.card-link:hover {
  gap: 8px;
  color: #C7472C;
}

/* =============================================
   特性块
   ============================================= */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
}

.feature-image {
  border-radius: 24px 8px 24px 8px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 20px 50px rgba(42, 60, 59, 0.1);
}

.feature-image::before {
  content: '';
  position: absolute;
  top: -14px;
  left: -14px;
  width: 40px;
  height: 40px;
  border-top: 3px solid #E65C3D;
  border-left: 3px solid #E65C3D;
  border-radius: 12px 0 0 0;
  z-index: 2;
}

.feature-image::after {
  content: '';
  position: absolute;
  bottom: -14px;
  right: -14px;
  width: 40px;
  height: 40px;
  border-bottom: 3px solid #D9A441;
  border-right: 3px solid #D9A441;
  border-radius: 0 0 12px 0;
  z-index: 2;
}

.feature-image img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  display: block;
}

.feature-text {
  position: relative;
}

.feature-text h3 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: #2A3C3B;
  letter-spacing: -0.02em;
}

.feature-text p {
  color: #3D6C65;
  opacity: 0.85;
  margin-bottom: 20px;
  line-height: 1.7;
}

.feature-list {
  list-style: none;
  margin-top: 20px;
}

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #2A3C3B;
  font-weight: 500;
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '✓';
  font-weight: 800;
  color: #E65C3D;
  background: rgba(230, 92, 61, 0.1);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* =============================================
   数据条
   ============================================= */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
  position: relative;
}

.stats-bar::before {
  content: '◈';
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1.2rem;
  color: rgba(230, 92, 61, 0.5);
  opacity: 0.4;
}

.stat-item {
  padding: 36px 20px;
  border-radius: 20px 8px 20px 8px;
  background: #FFFCF6;
  border: 1px solid #E5DACC;
  position: relative;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(42, 60, 59, 0.08);
  border-color: rgba(217, 164, 65, 0.4);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  background: linear-gradient(135deg, #E65C3D, #D9A441);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.9rem;
  color: #3D6C65;
  opacity: 0.65;
  margin-top: 8px;
  font-weight: 500;
}

/* =============================================
   内容墙
   ============================================= */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: 20px 8px 20px 8px;
  overflow: hidden;
  background: #FFFCF6;
  border: 1px solid #E5DACC;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.content-wall-item:hover {
  transform: translateY(-6px) rotate(-0.5deg);
  box-shadow: 0 20px 48px rgba(42, 60, 59, 0.12);
  border-color: rgba(230, 92, 61, 0.25);
}

.content-wall-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.content-wall-item:hover img {
  transform: scale(1.04);
}

.content-wall-body {
  padding: 24px;
  position: relative;
}

.content-wall-body .tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #E65C3D;
  background: rgba(230, 92, 61, 0.08);
  padding: 4px 10px;
  border-radius: 100px;
  margin-bottom: 10px;
}

.content-wall-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #2A3C3B;
  transition: color 0.3s;
}

.content-wall-item:hover .content-wall-body h3 {
  color: #E65C3D;
}

.content-wall-body p {
  font-size: 0.88rem;
  color: #3D6C65;
  opacity: 0.75;
  line-height: 1.6;
}

/* =============================================
   FAQ
   ============================================= */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #FFFCF6;
  border: 1px solid #E5DACC;
  border-radius: 16px 6px 16px 6px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.35s ease;
}

.faq-item:hover {
  border-color: rgba(230, 92, 61, 0.3);
  box-shadow: 0 4px 20px rgba(42, 60, 59, 0.06);
}

.faq-item.open {
  border-color: rgba(230, 92, 61, 0.4);
  box-shadow: 0 8px 30px rgba(42, 60, 59, 0.08);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 600;
  font-size: 1.05rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #2A3C3B;
  background: #FFFCF6;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: #E65C3D;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
  background: rgba(230, 92, 61, 0.1);
  border-radius: 50%;
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  color: #3D6C65;
  opacity: 0.8;
  line-height: 1.7;
  font-size: 0.95rem;
  border-top: 1px dashed rgba(229, 218, 204, 0.8);
  padding-top: 14px;
  margin-top: 0;
}

.faq-item.open .faq-answer {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 0.8; transform: translateY(0); }
}

/* =============================================
   CTA横幅
   ============================================= */
.cta-banner {
  padding: 72px 24px;
  text-align: center;
  border-radius: 28px 8px 28px 8px;
  background: linear-gradient(120deg, #E65C3D 0%, #D9803A 50%, #D9A441 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(230, 92, 61, 0.35);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 260px;
  height: 260px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 40% 60% 70% 30%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  max-width: 500px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
  line-height: 1.7;
}

.cta-banner .btn-primary {
  background: #FFF;
  color: #E65C3D;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary::after {
  content: '→';
  color: #E65C3D;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.2);
}

/* =============================================
   页脚
   ============================================= */
.site-footer {
  padding: 64px 0 28px;
  background: #E0ECEA;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: 'hsck';
  position: absolute;
  bottom: -40px;
  right: 20px;
  font-size: 10rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: rgba(42, 60, 59, 0.04);
  pointer-events: none;
  user-select: none;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  position: relative;
  z-index: 1;
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: #3D6C65;
  opacity: 0.8;
  line-height: 1.7;
  margin-bottom: 24px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #2A3C3B;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 20px;
  height: 2px;
  background: linear-gradient(90deg, #E65C3D, #D9A441);
  border-radius: 2px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  text-decoration: none;
  color: #3D6C65;
  opacity: 0.75;
  font-size: 0.88rem;
  transition: all 0.25s ease;
  line-height: 1.6;
}

.footer-col ul li a:hover {
  color: #E65C3D;
  opacity: 1;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(42, 60, 59, 0.12);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.82rem;
  color: #3D6C65;
  opacity: 0.7;
  position: relative;
  z-index: 1;
  letter-spacing: 0.04em;
}

/* =============================================
   工具类
   ============================================= */
.text-accent {
  color: #E65C3D;
  font-weight: 800;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.75;
  color: #3D6C65;
  line-height: 1.7;
}

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* =============================================
   装饰元素
   ============================================= */
/* 为偶数section添加独特纹理 */
.section:nth-child(even)::after {
  content: '◦ ◦ ◦';
  position: absolute;
  bottom: 20px;
  right: 32px;
  font-size: 0.85rem;
  letter-spacing: 0.5em;
  color: rgba(42, 60, 59, 0.1);
}

/* =============================================
   响应式 — 平板
   ============================================= */
@media (max-width: 992px) {
  .hero h1 { font-size: 2.6rem; }
  .section-title { font-size: 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .feature-block { grid-template-columns: 1fr; gap: 40px; }
  .hero::before { font-size: 14rem; }
}

/* =============================================
   响应式 — 移动端
   ============================================= */
@media (max-width: 768px) {
  .feature-block { grid-template-columns: 1fr; gap: 48px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .main-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(247, 242, 231, 0.98);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid #E5DACC;
    box-shadow: 0 20px 40px rgba(42, 60, 59, 0.08);
  }
  .main-nav.open {
    display: flex;
    animation: slideDown 0.35s ease;
  }
  .main-nav a {
    font-size: 1.05rem;
    padding: 8px 0;
  }
  .nav-cta {
    display: inline-block;
    text-align: center;
  }
  .menu-toggle {
    display: flex;
  }
  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .hero-buttons { flex-direction: column; align-items: stretch; gap: 12px; }
  .hero-buttons .btn { justify-content: center; }
  .section { padding: 60px 0; }
  .cards-grid, .content-wall { grid-template-columns: 1fr; gap: 20px; }
  .cta-banner { padding: 48px 20px; border-radius: 20px 6px 20px 6px; }
  .cta-banner h2 { font-size: 1.7rem; }
  .hero::before { font-size: 10rem; right: -10%; }
  .logo-icon { width: 34px; height: 34px; }
  .header-inner { height: 64px; }
  .main-nav.open { top: 64px; }
  .stat-number { font-size: 1.8rem; }
  .feature-image img { height: 240px; }
}

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

/* =============================================
   响应式 — 小屏手机
   ============================================= */
@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .hero-buttons .btn {
    width: 100%;
  }
  .hero h1 {
    font-size: 1.8rem;
  }
  .hero p {
    font-size: 0.95rem;
  }
  .section-title {
    font-size: 1.6rem;
  }
  .container {
    padding: 0 20px;
  }
  .btn {
    padding: 12px 24px;
    font-size: 0.9rem;
  }
  .stat-item {
    padding: 24px 16px;
  }
  .stat-number {
    font-size: 1.6rem;
  }
  .logo {
    font-size: 1.1rem;
  }
  .logo-icon {
    width: 30px;
    height: 30px;
    font-size: 0.9rem;
  }
  .footer-bottom {
    font-size: 0.72rem;
    line-height: 1.7;
  }
  .cta-banner h2 {
    font-size: 1.4rem;
  }
  .cta-banner p {
    font-size: 0.9rem;
  }
  .section-label {
    font-size: 0.7rem;
  }
}