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

html {
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: #FBF5EB;
  color: #3D2E2C;
  line-height: 1.7;
  letter-spacing: 0.02em;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.35;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
}

::selection {
  background: rgba(212, 82, 47, 0.2);
  color: #3D2E2C;
}

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

.section {
  padding: 96px 0;
  position: relative;
}

.section:nth-child(even) {
  background: #F3E9DC;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: #D4522F;
  padding: 6px 18px;
  border: 1.5px solid rgba(212, 82, 47, 0.4);
  border-radius: 999px;
  margin-bottom: 16px;
  background: rgba(212, 82, 47, 0.06);
  position: relative;
}

.section-label::before,
.section-label::after {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #E5A352;
  display: inline-block;
  margin-right: 8px;
  vertical-align: middle;
}

.section-label::after {
  margin-left: 8px;
  margin-right: 0;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 200;
  letter-spacing: 2px;
  color: #3D2E2C;
  line-height: 1.3;
  margin-bottom: 12px;
  position: relative;
}

.section-title strong {
  font-weight: 800;
  background: linear-gradient(90deg, #D4522F 0%, #E8A33D 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  max-width: 600px;
  color: rgba(61, 46, 44, 0.72);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.8;
  margin-bottom: 48px;
}

/* ========== 导航 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(251, 245, 235, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(234, 221, 203, 0.8);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 6px;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 6px,
    rgba(212, 82, 47, 0.18) 6px,
    rgba(212, 82, 47, 0.18) 12px
  );
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.35rem;
  text-decoration: none;
  color: #3D2E2C;
  letter-spacing: 1px;
  position: relative;
  z-index: 1;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: linear-gradient(135deg, #D4522F, #E8A33D);
  color: #FBF5EB;
  box-shadow: 0 4px 16px rgba(212, 82, 47, 0.3);
  position: relative;
  overflow: hidden;
}

.logo-icon::before {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 7px;
  border: 1.5px dashed rgba(251, 245, 235, 0.6);
}

.logo span:last-child {
  font-weight: 300;
  color: rgba(61, 46, 44, 0.55);
  font-size: 0.9rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(61, 46, 44, 0.75);
  letter-spacing: 0.04em;
  transition: color 0.25s, transform 0.25s;
  position: relative;
  padding: 4px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 2px;
  background: #D4522F;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transform-origin: left;
}

.main-nav a:hover {
  color: #D4522F;
}

.main-nav a:hover::after {
  transform: translateX(-50%) scaleX(1);
  transform-origin: right;
}

.nav-cta {
  padding: 10px 24px;
  border-radius: 999px;
  background: linear-gradient(135deg, #D4522F, #E05A32);
  color: #FBF5EB !important;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 4px 16px rgba(212, 82, 47, 0.3);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border: none !important;
}

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

.nav-cta:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 24px rgba(212, 82, 47, 0.4);
  color: #FBF5EB !important;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1.5px solid rgba(61, 46, 44, 0.15);
  background: transparent;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  color: #3D2E2C;
  transition: all 0.2s;
}

.menu-toggle:hover {
  border-color: #D4522F;
  color: #D4522F;
  background: rgba(212, 82, 47, 0.06);
}

/* ========== Hero ========== */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  background: #FBF5EB;
  position: relative;
  overflow: hidden;
  padding-top: 120px;
  padding-bottom: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 82, 47, 0.12), rgba(212, 82, 47, 0.03) 65%);
  z-index: 0;
  animation: heroPulse 8s ease-in-out infinite alternate;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 10%;
  left: 5%;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22, 118, 107, 0.1), transparent 70%);
  z-index: 0;
}

@keyframes heroPulse {
  0% { transform: scale(1) rotate(0deg); }
  100% { transform: scale(1.08) rotate(5deg); }
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-content {
  max-width: 640px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 6px 18px;
  border-radius: 999px;
  background: rgba(22, 118, 107, 0.1);
  color: #146C5E;
  border: 1px solid rgba(22, 118, 107, 0.2);
  margin-bottom: 24px;
  position: relative;
}

.hero-eyebrow::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #E5A352;
  box-shadow: 0 0 0 0 rgba(229, 163, 82, 0.6);
  animation: ping-dot 1.8s ease-in-out infinite;
}

@keyframes ping-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(229, 163, 82, 0.5); }
  50% { box-shadow: 0 0 0 8px rgba(229, 163, 82, 0); }
}

.hero h1 {
  font-size: clamp(2.8rem, 5.5vw, 4.5rem);
  line-height: 1.15;
  margin-bottom: 24px;
  font-weight: 200;
  color: #3D2E2C;
  letter-spacing: 2px;
  position: relative;
}

.hero h1 .accent-word {
  font-weight: 800;
  background: linear-gradient(120deg, #D4522F 0%, #E5A352 60%, #D4522F 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: shimmer-text 4s linear infinite;
}

@keyframes shimmer-text {
  0% { background-position: 0% center; }
  100% { background-position: 200% center; }
}

.hero h1::after {
  content: '▶';
  position: absolute;
  top: -20px;
  right: -36px;
  font-size: 2rem;
  color: rgba(212, 82, 47, 0.5);
  animation: floatPlay 3s ease-in-out infinite;
}

@keyframes floatPlay {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.hero p {
  font-size: 1.1rem;
  color: rgba(61, 46, 44, 0.7);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 2;
  font-weight: 400;
  letter-spacing: 0.03em;
}

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

.hero-image {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 24px 48px rgba(61, 46, 44, 0.12), 0 2px 8px rgba(61, 46, 44, 0.06);
  transform: rotate(2deg);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border: 6px solid #FFFEF9;
}

.hero-image:hover {
  transform: rotate(0deg) scale(1.02);
}

.hero-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(61, 46, 44, 0.25));
  z-index: 1;
  opacity: 0;
  transition: opacity 0.4s;
}

.hero-image:hover::before {
  opacity: 1;
}

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

.hero-image::after {
  content: '🎬';
  position: absolute;
  top: 16px;
  right: 16px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(251, 245, 235, 0.9);
  border-radius: 12px;
  font-size: 1.3rem;
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* 胶片孔洞装饰 */
.hero::after {
  content: '';
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 24px;
  background: repeating-linear-gradient(
    90deg,
    rgba(61, 46, 44, 0.03),
    rgba(61, 46, 44, 0.03) 24px,
    transparent 24px,
    transparent 48px
  );
  z-index: 0;
  pointer-events: none;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.2) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.btn:hover::before {
  transform: translateX(100%);
}

.btn-primary {
  background: linear-gradient(135deg, #D4522F, #E05A32);
  color: #FBF5EB;
  box-shadow: 0 4px 20px rgba(212, 82, 47, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(212, 82, 47, 0.4);
  color: #FFFEF9;
}

.btn-outline {
  background: transparent;
  border: 2px solid #3D2E2C;
  color: #3D2E2C;
  font-weight: 700;
}

.btn-outline:hover {
  background: #3D2E2C;
  color: #FBF5EB;
  transform: translateY(-3px);
  border-color: #3D2E2C;
}

/* ========== 卡片网格 ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: 18px;
  padding: 32px 28px;
  background: #FFFEF9;
  border: 1px solid #EADDCB;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #D4522F, #E5A352, #D4522F);
  background-size: 200% 100%;
  opacity: 0;
  transition: opacity 0.4s;
}

.category-card::after {
  content: '';
  position: absolute;
  bottom: -40px;
  right: -40px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 82, 47, 0.08), transparent 70%);
  transition: transform 0.4s;
}

.category-card:hover {
  transform: translateY(-6px) rotate(-0.5deg);
  box-shadow: 0 20px 40px rgba(61, 46, 44, 0.1);
  border-color: rgba(212, 82, 47, 0.3);
}

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

.category-card:hover::after {
  transform: scale(1.4);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, rgba(212, 82, 47, 0.12), rgba(229, 163, 82, 0.1));
  border: 1px solid rgba(212, 82, 47, 0.15);
  position: relative;
  z-index: 1;
}

.card-icon::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 18px;
  border: 1px dashed rgba(212, 82, 47, 0.25);
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s;
}

.category-card:hover .card-icon::after {
  opacity: 1;
}

.category-card h3 {
  font-size: 1.05rem;
  font-weight: 800;
  color: #3D2E2C;
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.category-card p {
  font-size: 0.85rem;
  color: rgba(61, 46, 44, 0.6);
  line-height: 1.7;
  margin-bottom: 16px;
}

.card-link {
  font-weight: 700;
  font-size: 0.83rem;
  text-decoration: none;
  color: #D4522F;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.3s;
}

.card-link::after {
  content: '→';
  transition: transform 0.3s;
}

.card-link:hover {
  gap: 12px;
}

.card-link:hover::after {
  transform: translateX(3px);
}

/* ========== 特性块 ========== */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 16px 40px rgba(61, 46, 44, 0.12);
  border: 5px solid #FFFEF9;
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(212, 82, 47, 0.15);
  border-radius: 14px;
  margin: 10px;
  pointer-events: none;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.feature-image:hover img {
  transform: scale(1.05);
}

.feature-text {
  padding-right: 20px;
}

.feature-text .section-title {
  font-size: 2.1rem;
  margin-bottom: 16px;
}

.feature-text > p {
  color: rgba(61, 46, 44, 0.7);
  line-height: 1.8;
  margin-bottom: 28px;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  padding: 12px 0;
  display: flex;
  align-items: center;
  gap: 14px;
  font-weight: 500;
  font-size: 0.98rem;
  border-bottom: 1px dashed rgba(61, 46, 44, 0.12);
  color: rgba(61, 46, 44, 0.85);
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list li::before {
  content: '✦';
  font-weight: 900;
  color: #D4522F;
  font-size: 1.1rem;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(212, 82, 47, 0.08);
  flex-shrink: 0;
}

.feature-list li:hover {
  color: #D4522F;
}

.feature-list li:hover::before {
  background: rgba(212, 82, 47, 0.18);
  transform: rotate(15deg);
}

/* ========== 数据条 ========== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
  border-radius: 20px;
  background: #FFFEF9;
  border: 1px solid #EADDCB;
  position: relative;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 3px;
  background: linear-gradient(90deg, #D4522F, #E5A352);
  border-radius: 3px;
  opacity: 0;
  transition: opacity 0.3s, width 0.3s;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(61, 46, 44, 0.08);
}

.stat-item:hover::before {
  opacity: 1;
  width: 70%;
}

.stat-number {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 900;
  line-height: 1.1;
  background: linear-gradient(135deg, #D4522F, #E8A33D);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  font-variant-numeric: tabular-nums;
}

.stat-number::after {
  content: '+';
  font-size: 0.6em;
  vertical-align: super;
  margin-left: 2px;
  -webkit-text-fill-color: #E5A352;
}

.stat-label {
  font-size: 0.92rem;
  color: rgba(61, 46, 44, 0.6);
  margin-top: 8px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
}

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

.content-wall-item {
  border-radius: 18px;
  overflow: hidden;
  background: #FFFEF9;
  border: 1px solid #EADDCB;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(61, 46, 44, 0.12);
  border-color: rgba(212, 82, 47, 0.25);
}

.content-wall-item .image-wrapper {
  position: relative;
  overflow: hidden;
}

.content-wall-item img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.content-wall-item:hover img {
  transform: scale(1.08) rotate(1deg);
}

.content-wall-item .image-wrapper::before {
  content: '▶';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(251, 245, 235, 0.92);
  border-radius: 50%;
  font-size: 1.1rem;
  color: #D4522F;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.18);
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 2;
}

.content-wall-item:hover .image-wrapper::before {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.content-wall-item .image-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(61, 46, 44, 0.35));
  opacity: 0;
  transition: opacity 0.4s;
}

.content-wall-item:hover .image-wrapper::after {
  opacity: 1;
}

.content-wall-body {
  padding: 22px 24px 26px;
}

.content-wall-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #3D2E2C;
  margin-bottom: 6px;
  line-height: 1.5;
}

.content-wall-body p {
  font-size: 0.83rem;
  color: rgba(61, 46, 44, 0.6);
  line-height: 1.6;
}

.content-wall-body .badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  background: rgba(22, 118, 107, 0.1);
  color: #146C5E;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

/* 影片卡片角标 */
.content-wall-item .views-count {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(61, 46, 44, 0.6);
  color: #FBF5EB;
  font-size: 0.7rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
  z-index: 3;
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: #FFFEF9;
  border: 1px solid #EADDCB;
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.faq-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, #D4522F, #E5A352);
  opacity: 0;
  transition: opacity 0.3s;
}

.faq-item:hover {
  border-color: rgba(212, 82, 47, 0.35);
  transform: translateX(4px);
}

.faq-item:hover::before {
  opacity: 1;
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 0.98rem;
  color: #3D2E2C;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: #D4522F;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1.5px solid rgba(212, 82, 47, 0.4);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  flex-shrink: 0;
}

.faq-item .faq-answer {
  padding: 0 24px 22px 56px;
  display: none;
  color: rgba(61, 46, 44, 0.72);
  font-size: 0.92rem;
  line-height: 1.8;
}

.faq-item.open {
  border-color: rgba(212, 82, 47, 0.4);
  box-shadow: 0 8px 24px rgba(61, 46, 44, 0.08);
}

.faq-item.open .faq-question {
  color: #D4522F;
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
  background: #D4522F;
  color: #FBF5EB;
  border-color: #D4522F;
}

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

@keyframes fadeSlideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== CTA横幅 ========== */
.cta-banner {
  padding: 64px 48px;
  text-align: center;
  border-radius: 28px;
  background: linear-gradient(135deg, #D4522F 0%, #E86F3E 40%, #E8A33D 100%);
  color: #FFFEF9;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(212, 82, 47, 0.3);
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(255,255,255,0.04),
    rgba(255,255,255,0.04) 8px,
    transparent 8px,
    transparent 16px
  );
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 3px dashed rgba(255,255,255,0.25);
  animation: rotateSlow 20s linear infinite;
}

@keyframes rotateSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.cta-banner h2 {
  color: #FFFEF9;
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.cta-banner p {
  color: rgba(255, 254, 249, 0.9);
  font-size: 1rem;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-primary {
  background: #FBF5EB;
  color: #D4522F;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
  color: #D4522F;
}

/* ========== 页脚 ========== */
.site-footer {
  padding: 72px 0 32px;
  background: #F3E9DC;
  border-top: 4px solid #EADDCB;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    #D4522F,
    #D4522F 40px,
    #E5A352 40px,
    #E5A352 80px,
    #146C5E 80px,
    #146C5E 120px,
    #EADDCB 120px,
    #EADDCB 160px
  );
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 32px;
}

.footer-brand {
  padding-right: 20px;
}

.footer-brand .logo {
  font-size: 1.5rem;
  margin-bottom: 16px;
  font-weight: 800;
}

.footer-brand .logo-icon {
  width: 44px;
  height: 44px;
  font-size: 1.3rem;
  background: linear-gradient(135deg, #D4522F, #E8A33D);
}

.footer-brand .tagline {
  font-size: 0.92rem;
  color: rgba(61, 46, 44, 0.65);
  line-height: 1.8;
  margin-bottom: 20px;
  letter-spacing: 0.3px;
}

.footer-brand .social-row {
  display: flex;
  gap: 10px;
}

.footer-brand .social-link {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid rgba(61, 46, 44, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  color: rgba(61, 46, 44, 0.7);
  text-decoration: none;
  transition: all 0.3s;
}

.footer-brand .social-link:hover {
  background: #D4522F;
  color: #FBF5EB;
  border-color: #D4522F;
  transform: translateY(-3px);
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #3D2E2C;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, #D4522F, #E5A352);
}

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

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  text-decoration: none;
  color: rgba(61, 46, 44, 0.65);
  font-size: 0.9rem;
  font-weight: 400;
  transition: color 0.25s, padding-left 0.25s;
  position: relative;
  display: inline-block;
}

.footer-col a::before {
  content: '—';
  margin-right: 6px;
  color: rgba(212, 82, 47, 0.5);
  font-weight: 300;
  opacity: 0;
  transition: opacity 0.3s;
}

.footer-col a:hover {
  color: #D4522F;
  padding-left: 14px;
}

.footer-col a:hover::before {
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid rgba(61, 46, 44, 0.12);
  margin-top: 40px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(61, 46, 44, 0.5);
  letter-spacing: 0.5px;
}

.footer-bottom .beian-link {
  color: rgba(61, 46, 44, 0.55);
  text-decoration: none;
  margin: 0 6px;
  transition: color 0.3s;
}

.footer-bottom .beian-link:hover {
  color: #D4522F;
}

/* ========== 工具类 ========== */
.text-accent {
  color: #D4522F;
  font-weight: 700;
}

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

.seo-description {
  max-width: 680px;
  margin: 0 auto 48px;
  opacity: 0.7;
  text-align: center;
  font-size: 0.95rem;
  line-height: 1.9;
  letter-spacing: 0.3px;
}

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

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

/* ========== 装饰性工具 ========== */
.highlight-stroke {
  position: relative;
  display: inline-block;
}

.highlight-stroke::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 8px;
  background: linear-gradient(90deg, rgba(212, 82, 47, 0.25), rgba(229, 163, 82, 0.25));
  z-index: -1;
  border-radius: 4px;
}

.film-strip {
  height: 10px;
  background-image: repeating-linear-gradient(
    90deg,
    #3D2E2C,
    #3D2E2C 8px,
    transparent 8px,
    transparent 16px
  );
  opacity: 0.06;
}

/* 焦点可见性 - 无障碍 */
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(212, 82, 47, 0.5);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-content {
    max-width: 100%;
    text-align: center;
    margin: 0 auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-image {
    max-width: 500px;
    margin: 0 auto;
  }

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

  .feature-block {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .feature-text {
    padding-right: 0;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .feature-block {
    grid-template-columns: 1fr;
  }

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

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

  .main-nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: rgba(251, 245, 235, 0.98);
    backdrop-filter: blur(16px);
    padding: 20px 24px 32px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    border-bottom: 1px solid #EADDCB;
    box-shadow: 0 20px 40px rgba(61, 46, 44, 0.08);
    animation: navSlideDown 0.3s ease;
  }

  @keyframes navSlideDown {
    from {
      opacity: 0;
      transform: translateY(-12px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .main-nav a {
    width: 100%;
    padding: 12px 8px;
    font-size: 1rem;
    border-bottom: 1px dashed rgba(61, 46, 44, 0.08);
  }

  .main-nav a::after {
    display: none;
  }

  .main-nav a:hover {
    background: rgba(212, 82, 47, 0.06);
    border-radius: 8px;
    transform: translateX(4px);
  }

  .main-nav .nav-cta {
    margin-top: 8px;
    text-align: center;
  }

  .main-nav.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-toggle.active {
    color: #D4522F;
    border-color: #D4522F;
    background: rgba(212, 82, 47, 0.08);
  }

  .hero {
    padding-top: 100px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero h1::after {
    display: none;
  }

  .hero p {
    font-size: 1rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
  }

  .cta-banner {
    padding: 40px 24px;
  }

  .cta-banner h2 {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

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

  .hero-buttons {
    flex-direction: column;
  }

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

  .section-title {
    font-size: 1.6rem;
  }

  .stats-bar {
    grid-template-columns: 1fr 1fr;
  }

  .stat-item {
    padding: 20px 12px;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .faq-item .faq-question {
    padding: 16px 18px;
    font-size: 0.9rem;
  }

  .faq-item .faq-answer {
    padding: 0 18px 18px 40px;
  }

  .header-inner {
    height: 64px;
  }

  .main-nav {
    top: 64px;
  }

  .logo {
    font-size: 1.1rem;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  .logo span:last-child {
    display: none;
  }

  .cta-banner {
    padding: 32px 20px;
    border-radius: 20px;
  }

  .cta-banner h2 {
    font-size: 1.5rem;
  }
}

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #FBF5EB;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #D4522F, #E5A352);
  border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
  background: #D4522F;
}

/* ========== 微光动画 ========== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}