/* ==========================================================
   红桃TV · 红桃视界 — 设计系统
   风格：奶油珊瑚 · 桃色杂志 · 柔和流体
   ========================================================== */

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

:root {
  --peach-50: #FFF9F6;
  --peach-100: #FFF0EB;
  --peach-200: #FFE0D6;
  --coral-400: #FF9E8A;
  --coral-500: #FF7E6B;
  --heart-500: #FF5A5F;
  --heart-600: #E84A50;
  --ink-900: #3D2C2E;
  --ink-700: #5C4A4D;
  --ink-500: #8A7B7D;
  --cream: #FFFDF9;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --radius-full: 50px;
  --shadow-sm: 0 2px 8px rgba(255, 90, 95, 0.06);
  --shadow-md: 0 8px 30px rgba(255, 90, 95, 0.10);
  --shadow-lg: 0 20px 50px rgba(255, 90, 95, 0.16);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: var(--cream);
  color: var(--ink-900);
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

.section {
  padding: 110px 0;
  position: relative;
}

.section:nth-child(even) {
  background: linear-gradient(135deg, #FFF3EF 0%, #FFF9F6 100%);
}

/* ============ 导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 253, 250, 0.86);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-bottom: 1px solid rgba(255, 90, 95, 0.10);
  box-shadow: 0 1px 24px rgba(255, 90, 95, 0.04);
}

.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: 1.25rem;
  text-decoration: none;
  color: var(--ink-900);
  letter-spacing: -0.01em;
  transition: opacity 0.3s var(--ease);
}

.logo:hover {
  opacity: 0.88;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  background: linear-gradient(135deg, #FF8A75, #FF5A5F);
  color: #fff;
  box-shadow: 0 4px 14px rgba(255, 90, 95, 0.28);
  position: relative;
  flex-shrink: 0;
}

.logo-icon::after {
  content: '♥';
  font-weight: 700;
  font-size: 1.1rem;
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-700);
  transition: color 0.25s var(--ease);
  position: relative;
  padding: 4px 2px;
  letter-spacing: 0.01em;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, #FF7E6B, #FF5A5F);
  transition: width 0.35s var(--ease);
}

.main-nav a:hover {
  color: var(--heart-500);
}

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

.nav-cta {
  padding: 10px 26px;
  border-radius: var(--radius-full);
  color: #fff !important;
  font-weight: 600;
  background: linear-gradient(135deg, #FF7E6B, #FF5A5F);
  box-shadow: 0 4px 16px rgba(255, 90, 95, 0.24);
  transition: all 0.3s var(--ease) !important;
}

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

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255, 90, 95, 0.32);
  color: #fff !important;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  border-radius: 10px;
  transition: background 0.2s;
}

.menu-toggle:hover {
  background: rgba(255, 90, 95, 0.06);
}

.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink-900);
  border-radius: 2px;
  transition: all 0.3s var(--ease);
}

/* ============ Hero ============ */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 88% 15%, rgba(255, 90, 95, 0.10) 0%, transparent 55%),
    radial-gradient(ellipse at 70% 85%, rgba(255, 158, 138, 0.08) 0%, transparent 50%),
    linear-gradient(160deg, #FFFDFA 0%, #FFF3EF 100%);
}

.hero::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 1px solid rgba(255, 90, 95, 0.12);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: 10%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px solid rgba(255, 90, 95, 0.08);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 20px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
  background: linear-gradient(135deg, #FFE0D6, #FFF0EB);
  color: var(--heart-600);
  letter-spacing: 0.05em;
  border: 1px solid rgba(255, 90, 95, 0.12);
}

.hero h1 {
  font-size: clamp(2.4rem, 5.2vw, 4.2rem);
  line-height: 1.14;
  margin-bottom: 24px;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--ink-900);
}

.hero p {
  font-size: 1.08rem;
  opacity: 0.74;
  max-width: 560px;
  margin-bottom: 36px;
  color: var(--ink-700);
  line-height: 1.8;
}

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

.hero-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 90, 95, 0.10);
  aspect-ratio: 4 / 3;
}

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

.hero-image::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  border-left: 20px solid var(--heart-500);
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  transform: translate(-12px, -50%);
  z-index: 3;
  filter: drop-shadow(0 2px 8px rgba(255, 90, 95, 0.4));
  transition: transform 0.35s var(--ease);
}

.hero-image::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 84px;
  height: 84px;
  background: rgba(255, 255, 255, 0.88);
  border-radius: 50%;
  z-index: 2;
  box-shadow: 0 8px 32px rgba(255, 90, 95, 0.28);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: all 0.35s var(--ease);
}

.hero-image:hover::after {
  transform: translate(-50%, -50%) scale(1.08);
}

.hero-image:hover::before {
  transform: translate(-12px, -50%) scale(1.1);
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s var(--ease);
  letter-spacing: 0.02em;
}

.btn-primary {
  background: linear-gradient(135deg, #FF7E6B 0%, #FF5A5F 100%);
  color: #fff;
  box-shadow: 0 6px 22px rgba(255, 90, 95, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 34px rgba(255, 90, 95, 0.38);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid rgba(255, 90, 95, 0.38);
  color: var(--heart-600);
}

.btn-outline:hover {
  border-color: var(--heart-500);
  background: rgba(255, 90, 95, 0.05);
  transform: translateY(-2px);
}

/* ============ 标签/标题 ============ */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 14px;
  text-transform: uppercase;
  color: var(--heart-500);
  padding: 4px 0;
  position: relative;
}

.section-label::before {
  content: '♥';
  color: var(--heart-500);
  font-size: 0.7rem;
  margin-right: 6px;
  opacity: 0.7;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  margin-bottom: 16px;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink-900);
}

.section-desc {
  max-width: 620px;
  opacity: 0.72;
  margin-bottom: 48px;
  color: var(--ink-700);
  line-height: 1.85;
  font-size: 0.98rem;
}

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

.category-card {
  border-radius: var(--radius-md);
  padding: 34px 28px;
  border: 1px solid rgba(255, 90, 95, 0.08);
  background: #ffffff;
  transition: all 0.4s var(--ease);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #FF7E6B, #FF5A5F);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}

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

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

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
  background: linear-gradient(135deg, #FFF0EB, #FFE0D6);
  color: var(--heart-600);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.6);
}

.category-card h3 {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}

.category-card p {
  font-size: 0.88rem;
  color: var(--ink-500);
  line-height: 1.6;
  margin-bottom: 18px;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--heart-500);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s var(--ease);
}

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

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

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
  aspect-ratio: 5 / 4;
}

.feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.feature-image:hover img {
  transform: scale(1.02);
}

.feature-text {
  position: relative;
}

.feature-text .section-label {
  margin-bottom: 12px;
}

.feature-text .section-title {
  font-size: 2rem;
  margin-bottom: 14px;
}

.feature-text .section-desc {
  margin-bottom: 24px;
}

.feature-list {
  list-style: none;
  margin-top: 8px;
}

.feature-list li {
  padding: 10px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.96rem;
  color: var(--ink-700);
  line-height: 1.6;
}

.feature-list li::before {
  content: '♥';
  font-weight: 700;
  color: var(--heart-500);
  font-size: 0.9rem;
  background: #FFF0EB;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.25s var(--ease);
}

.feature-list li:hover::before {
  background: var(--heart-500);
  color: #fff;
  transform: scale(1.08);
}

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

.stat-item {
  padding: 34px 20px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 90, 95, 0.08);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, #FF7E6B, #FF5A5F);
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}

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

.stat-item:hover::after {
  opacity: 1;
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.2;
  background: linear-gradient(135deg, #FF7E6B, #FF5A5F);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: var(--ink-500);
  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: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 90, 95, 0.08);
  background: #fff;
  transition: all 0.4s var(--ease);
}

.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

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

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

.content-wall-body h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}

.content-wall-body p {
  font-size: 0.86rem;
  color: var(--ink-500);
  line-height: 1.65;
}

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

.faq-item {
  border: 1px solid rgba(255, 90, 95, 0.10);
  border-radius: 14px;
  margin-bottom: 12px;
  cursor: pointer;
  background: #fff;
  transition: all 0.3s var(--ease);
  overflow: hidden;
}

.faq-item:hover {
  border-color: rgba(255, 90, 95, 0.22);
  box-shadow: var(--shadow-sm);
}

.faq-item.open {
  border-color: rgba(255, 90, 95, 0.28);
  box-shadow: var(--shadow-md);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink-900);
  font-size: 0.96rem;
  gap: 16px;
  transition: color 0.3s var(--ease);
}

.faq-item.open .faq-question {
  color: var(--heart-600);
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--heart-500);
  transition: all 0.35s var(--ease);
  flex-shrink: 0;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
  color: var(--heart-600);
}

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.72;
  color: var(--ink-700);
  line-height: 1.75;
  font-size: 0.92rem;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ============ CTA横幅 ============ */
.cta-banner {
  padding: 68px 48px;
  text-align: center;
  border-radius: var(--radius-lg);
  color: #fff;
  background: linear-gradient(135deg, #FF8A75 0%, #FF5A5F 50%, #E84A50 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(255, 90, 95, 0.28);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.10);
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -40px;
  left: -40px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}

.cta-banner h2 {
  color: #fff;
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  font-weight: 800;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
  letter-spacing: -0.02em;
}

.cta-banner p {
  position: relative;
  z-index: 2;
  opacity: 0.92;
  margin-bottom: 28px;
  font-size: 1rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--heart-600);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
}

/* ============ 页脚 ============ */
.site-footer {
  padding: 72px 0 32px;
  background: #FFF0EB;
  border-top: 1px solid rgba(255, 90, 95, 0.10);
}

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

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

.footer-brand p {
  font-size: 0.9rem;
  color: var(--ink-500);
  line-height: 1.75;
  margin-top: 12px;
  max-width: 280px;
}

.footer-col h5 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-900);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

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

.footer-col ul li a {
  color: var(--ink-700);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.25s var(--ease);
  position: relative;
  padding: 2px 0;
}

.footer-col ul li a:hover {
  color: var(--heart-500);
}

.footer-bottom {
  border-top: 1px solid rgba(61, 44, 46, 0.08);
  margin-top: 56px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-500);
}

/* ============ 工具类 ============ */
.text-accent {
  color: var(--heart-500);
  background: linear-gradient(135deg, #FF7E6B, #FF5A5F);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}

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

.text-center .section-label,
.text-center .section-title,
.text-center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

.text-center .section-desc {
  max-width: 600px;
}

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.72;
  color: var(--ink-700);
  line-height: 1.8;
}

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

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .section {
    padding: 88px 0;
  }

  .hero {
    min-height: auto;
    padding: 130px 0 80px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-image {
    margin-top: 48px;
  }

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

  .feature-block .feature-image {
    order: -1;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

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

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 24px;
    right: 24px;
    background: var(--cream);
    padding: 28px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 90, 95, 0.10);
    gap: 20px;
    align-items: stretch;
  }

  .main-nav.open a {
    padding: 6px 0;
    font-size: 1rem;
  }

  .main-nav.open .nav-cta {
    text-align: center;
    margin-top: 4px;
    padding: 12px 24px;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

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

  .cta-banner {
    padding: 52px 28px;
  }
}

@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;
  }

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

  .section {
    padding: 72px 0;
  }

  .container {
    padding: 0 20px;
  }

  .cta-banner {
    padding: 44px 24px;
  }

  .stat-item {
    padding: 24px 16px;
  }

  .stat-number {
    font-size: 2rem;
  }
}