/* 问鼎平台 · 珊瑚薄荷 独特风格 */
*,
*::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: #fcfcfc;
  color: #1e2d3d;
}

/* 自定义属性 */
:root {
  --primary: #e86b5e;         /* 珊瑚红 */
  --primary-light: #f48f85;
  --secondary: #3ba18a;       /* 薄荷绿 */
  --secondary-light: #6dc4b0;
  --accent: #f6c35b;          /* 暖黄点缀 */
  --bg-light: #f7f2ef;
  --bg-card: #ffffff;
  --text-dark: #1e2d3d;
  --text-light: #6b7c8f;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 12px 28px rgba(232, 107, 94, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --font-thin: 300;
  --font-regular: 500;
  --font-bold: 700;
  --font-black: 900;
}

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

.section {
  padding: 80px 0;
}

.section:nth-child(even) {
  background: var(--bg-light);
}

/* 导航 — 固定顶部 玻璃+渐变 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(232, 107, 94, 0.15);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.02);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: var(--font-black);
  font-size: 1.3rem;
  text-decoration: none;
  color: var(--primary);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: var(--font-regular);
  color: var(--text-dark);
  transition: 0.25s ease;
  letter-spacing: 0.3px;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s;
}

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

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

.nav-cta {
  padding: 10px 24px;
  border-radius: 100px;
  color: #fff !important;
  font-weight: var(--font-bold);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 4px 14px rgba(232, 107, 94, 0.3);
  transition: 0.25s;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(232, 107, 94, 0.35);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-dark);
}

/* 首页Hero — 大圆角卡片+偏移布局 */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(120deg, #fdf6f3 0%, #f2f8f5 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 161, 138, 0.08), transparent 70%);
  pointer-events: none;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: 3px;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 20px;
  background: rgba(232, 107, 94, 0.12);
  color: var(--primary);
}

.hero h1 {
  font-size: 3.4rem;
  line-height: 1.1;
  margin-bottom: 20px;
  font-weight: var(--font-black);
  letter-spacing: -1.5px;
  color: var(--text-dark);
}

.hero h1::after {
  content: ' ⛰️';
  display: inline-block;
  font-size: 2rem;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.8;
  max-width: 540px;
  margin-bottom: 36px;
  line-height: 1.6;
  color: var(--text-light);
}

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

.hero-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  transform: rotate(2deg) scale(1.02);
  transition: 0.5s;
}

.hero-image:hover {
  transform: rotate(0deg) scale(1.05);
}

.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: 60px;
  font-weight: var(--font-bold);
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  letter-spacing: 0.5px;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 6px 18px rgba(232, 107, 94, 0.25);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 28px rgba(232, 107, 94, 0.35);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-3px);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: var(--font-bold);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 12px;
  color: var(--secondary);
  padding: 4px 16px;
  border-radius: 30px;
  background: rgba(59, 161, 138, 0.08);
}

.section-title {
  font-size: 2.4rem;
  margin-bottom: 14px;
  font-weight: var(--font-black);
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: var(--text-dark);
}

.section-desc {
  max-width: 600px;
  opacity: 0.75;
  margin-bottom: 48px;
  font-size: 1.1rem;
  color: var(--text-light);
}

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

.category-card {
  border-radius: var(--radius);
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid rgba(232, 107, 94, 0.08);
  transition: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: 0.3s;
}

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

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

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.6rem;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
  color: #fff;
  box-shadow: 0 4px 12px rgba(232, 107, 94, 0.2);
}

.card-link {
  font-weight: var(--font-bold);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.card-link:hover::after {
  transform: translateX(4px);
}

/* 特性块 — 交错不对称 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: 0.4s;
}

.feature-image:hover {
  box-shadow: var(--shadow-hover);
}

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

.feature-text {
  padding: 12px 0;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  border-bottom: 1px dashed rgba(0, 0, 0, 0.06);
}

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

.feature-list li::before {
  content: '✓';
  font-weight: var(--font-black);
  color: var(--secondary);
  font-size: 1.2rem;
}

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

.stat-item {
  padding: 32px 20px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid rgba(59, 161, 138, 0.1);
  transition: 0.3s;
  position: relative;
}

.stat-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 20%;
  width: 60%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 3px;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.stat-number {
  font-size: 2.7rem;
  font-weight: var(--font-black);
  color: var(--primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: var(--text-light);
}

/* 内容墙 — 杂志网格 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid rgba(0, 0, 0, 0.04);
  transition: 0.4s;
  box-shadow: var(--shadow-sm);
}

.content-wall-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

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

.content-wall-item:hover img {
  transform: scale(1.03);
}

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

.content-wall-body h3 {
  font-size: 1.15rem;
  font-weight: var(--font-bold);
  margin-bottom: 8px;
}

.content-wall-body p {
  color: var(--text-light);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* FAQ — 手风琴风格 */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid rgba(232, 107, 94, 0.15);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: 0.2s;
  background: var(--bg-card);
}

.faq-item:hover {
  border-color: var(--primary);
}

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: var(--font-bold);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-dark);
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: var(--font-thin);
  color: var(--primary);
  transition: 0.3s;
}

.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-item .faq-answer {
  padding: 0 24px 18px;
  display: none;
  opacity: 0.8;
  color: var(--text-light);
  line-height: 1.6;
}

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

/* CTA横幅 — 珊瑚到薄荷渐变 */
.cta-banner {
  padding: 64px 24px;
  text-align: center;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 16px 40px rgba(232, 107, 94, 0.25);
}

.cta-banner h2 {
  color: #fff;
  font-size: 2.2rem;
  font-weight: var(--font-black);
  margin-bottom: 12px;
}

.cta-banner p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 28px;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
}

.cta-banner .btn-primary:hover {
  background: var(--bg-light);
  transform: translateY(-3px);
}

/* 页脚 — 浅色典雅 */
.site-footer {
  padding: 60px 0 28px;
  background: var(--bg-light);
  border-top: 1px solid rgba(232, 107, 94, 0.1);
}

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

.footer-brand p {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-top: 12px;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: var(--font-bold);
  margin-bottom: 16px;
  color: var(--text-dark);
}

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

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

.footer-col a {
  text-decoration: none;
  color: var(--text-light);
  font-size: 0.9rem;
  transition: 0.2s;
}

.footer-col a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-light);
}

/* 工具类 */
.text-accent {
  color: var(--primary);
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.75;
  color: var(--text-light);
}

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

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

/* 额外装饰 — 为英雄区增加抽象波纹 */
.hero-decoration {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: linear-gradient(transparent, var(--bg-light));
  z-index: 1;
}

/* ⚠️ 响应式 */
@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    padding: 24px 20px;
    gap: 16px;
    border-bottom: 1px solid rgba(232, 107, 94, 0.1);
  }

  .hero h1 {
    font-size: 2.4rem;
  }

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

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }

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

  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }

  .hero h1 {
    font-size: 2rem;
  }
}