/* ============================================================
   免费一级网站免费 · 设计系统
   "暖阳奶油 × 珊瑚 × 薄荷" — 日光自由平台
   风格关键词：柔和渐变、有机流体、圆润结构、大字号编编排
   ============================================================ */

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

:root {
  --cream: #FFF9F2;
  --cream-deep: #FFF0E6;
  --paper: #FFFFFF;
  --ink: #2D2A32;
  --muted: #706B78;
  --coral: #FF5D45;
  --coral-deep: #E84D39;
  --coral-light: #FFB3A3;
  --teal: #00858B;
  --teal-soft: #DFF3F4;
  --yellow: #FFC93C;
  --yellow-soft: #FFF3D4;
  --lavender: #9A7BD6;
  --lavender-soft: #EFE8FA;
  --shadow-sm: 0 4px 16px rgba(45,42,50,0.05);
  --shadow-md: 0 12px 40px rgba(45,42,50,0.08);
  --shadow-lg: 0 24px 64px rgba(255,93,69,0.14);
  --radius: 20px;
  --radius-lg: 32px;
  --radius-full: 999px;
}

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

::selection {
  background: var(--coral);
  color: #FFFFFF;
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--cream);
}
::-webkit-scrollbar-thumb {
  background: var(--coral-light);
  border-radius: 10px;
}

/* ---------- 核心布局 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
}

.section {
  padding: 100px 0;
  position: relative;
  background-image:
    radial-gradient(circle at 10% 30%, rgba(255,201,60,0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(0,133,139,0.04) 0%, transparent 35%);
}

.section:nth-child(even) {
  background: var(--cream-deep);
}

/* ---------- 导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,249,242,0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,93,69,0.12);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.28rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  background: linear-gradient(135deg, var(--coral) 0%, var(--yellow) 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 16px rgba(255,93,69,0.3);
  transition: transform 0.4s ease;
}

.logo:hover .logo-icon {
  transform: rotate(-12deg) scale(1.06);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--muted);
  transition: color 0.3s ease;
  position: relative;
  padding: 6px 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--coral);
  border-radius: 2px;
  transition: width 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

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

.nav-cta {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  color: #FFFFFF !important;
  font-weight: 700;
  background: var(--coral);
  box-shadow: 0 4px 16px rgba(255,93,69,0.35);
  transition: all 0.3s ease;
}

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

.nav-cta:hover {
  background: var(--teal);
  box-shadow: 0 6px 20px rgba(0,133,139,0.3);
  transform: translateY(-2px);
  color: #FFFFFF !important;
}

.menu-toggle {
  display: none;
  background: none;
  border: 2px solid var(--ink);
  border-radius: 12px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  position: relative;
  z-index: 1200;
  transition: border-color 0.3s ease;
}

.menu-toggle::before {
  content: '';
  position: absolute;
  top: 17px;
  left: 10px;
  width: 20px;
  height: 2px;
  background: var(--ink);
  box-shadow: 0 6px 0 var(--ink);
  transition: transform 0.3s ease;
}

.menu-toggle:hover {
  border-color: var(--coral);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 82vh;
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  overflow: hidden;
  padding: 140px 0 80px;
  background:
    radial-gradient(ellipse 70% 55% at 88% 18%, rgba(255,201,60,0.16) 0%, transparent 60%),
    radial-gradient(ellipse 55% 60% at 8% 85%, rgba(255,93,69,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 40% 45% at 60% 110%, rgba(0,133,139,0.08) 0%, transparent 60%),
    var(--cream);
}

.hero::before {
  content: '';
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%;
  background: linear-gradient(135deg, rgba(255,93,69,0.12), rgba(255,201,60,0.12));
  right: -60px;
  top: 14%;
  animation: blobFloat 9s ease-in-out infinite alternate;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  background: linear-gradient(135deg, rgba(0,133,139,0.1), rgba(0,133,139,0.03));
  left: -40px;
  bottom: 8%;
  animation: blobFloat2 11s ease-in-out infinite alternate;
  z-index: 0;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 7px 18px;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
  background: var(--teal-soft);
  color: var(--teal);
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.hero-eyebrow::before {
  content: '◆';
  font-size: 0.55rem;
  color: var(--coral);
}

.hero h1 {
  font-size: clamp(2.6rem, 5vw, 4rem);
  line-height: 1.08;
  margin-bottom: 24px;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.78;
  max-width: 560px;
  margin-bottom: 36px;
  color: var(--muted);
  line-height: 1.75;
}

.hero-buttons {
  display: flex;
  gap: 14px;
}

.hero-image {
  flex: 0 0 420px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow-lg);
  transform: rotate(2deg);
  background: linear-gradient(135deg, var(--teal-soft), var(--yellow-soft));
  animation: floatY 6s ease-in-out infinite;
}

.hero-image::after {
  content: '';
  position: absolute;
  bottom: -26px;
  right: -26px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--yellow);
  opacity: 0.7;
  z-index: -1;
}

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

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.btn-primary {
  color: #FFFFFF;
  background: var(--coral);
  box-shadow: 0 8px 24px rgba(255,93,69,0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 36px rgba(255,93,69,0.45);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--ink);
  color: var(--ink);
}

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

/* ---------- 标签 / 标题 ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 3px;
  margin-bottom: 16px;
  text-transform: uppercase;
  color: var(--teal);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 26px;
  height: 2px;
  background: var(--coral);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
}

.section-desc {
  max-width: 600px;
  opacity: 0.75;
  color: var(--muted);
  margin-bottom: 48px;
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ---------- 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-lg);
  padding: 32px;
  border: 1px solid rgba(45,42,50,0.05);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  transition: all 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--coral), var(--yellow));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s ease;
}

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

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

.category-card:nth-child(1) {
  background: linear-gradient(135deg, #FFFFFF 60%, var(--teal-soft) 100%);
}

.category-card:nth-child(2) {
  background: linear-gradient(135deg, #FFFFFF 60%, var(--yellow-soft) 100%);
}

.category-card:nth-child(3) {
  background: linear-gradient(135deg, #FFFFFF 60%, rgba(255,93,69,0.06) 100%);
}

.category-card:nth-child(4) {
  background: linear-gradient(135deg, #FFFFFF 60%, var(--lavender-soft) 100%);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
  color: #FFFFFF;
}

.category-card:nth-child(1) .card-icon {
  background: var(--teal);
}

.category-card:nth-child(2) .card-icon {
  background: var(--yellow);
  color: var(--ink);
}

.category-card:nth-child(3) .card-icon {
  background: var(--coral);
}

.category-card:nth-child(4) .card-icon {
  background: var(--lavender);
}

.card-link {
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--coral);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s ease, color 0.3s ease;
}

.card-link:hover {
  gap: 10px;
  color: var(--teal);
}

/* ---------- 特性块 ---------- */
.feature-block {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.feature-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: relative;
  background: linear-gradient(135deg, var(--teal-soft), var(--yellow-soft));
}

.feature-image::after {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: var(--coral-light);
  opacity: 0.3;
  z-index: 1;
}

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

.feature-text {
  position: relative;
}

.feature-text h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--ink);
}

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

.feature-list li {
  padding: 12px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  font-size: 0.95rem;
  border-bottom: 1px solid rgba(45,42,50,0.06);
}

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

.feature-list li::before {
  content: '✓';
  font-weight: 800;
  color: var(--teal);
  background: var(--teal-soft);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  flex-shrink: 0;
}

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

.stat-item {
  padding: 36px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(45,42,50,0.05);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  position: relative;
  overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--coral);
  border-radius: 3px 3px 0 0;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

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

.stat-number {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--coral);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.88rem;
  opacity: 0.62;
  margin-top: 8px;
  color: var(--muted);
  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-lg);
  overflow: hidden;
  border: 1px solid rgba(45,42,50,0.05);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
  transition: all 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.content-wall-item:hover {
  transform: translateY(-6px) rotate(-0.5deg);
  box-shadow: var(--shadow-md);
}

.content-wall-item img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.content-wall-item:hover img {
  transform: scale(1.05);
}

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

.content-wall-body h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--ink);
}

.content-wall-body p {
  font-size: 0.88rem;
  color: var(--muted);
  opacity: 0.75;
  line-height: 1.6;
}

.content-wall-body .tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--teal-soft);
  color: var(--teal);
  margin-top: 12px;
  letter-spacing: 0.5px;
}

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

.faq-item {
  border: 1px solid rgba(45,42,50,0.06);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: var(--paper);
  box-shadow: 0 2px 8px rgba(45,42,50,0.03);
  transition: all 0.35s ease;
}

.faq-item:hover {
  border-color: var(--coral-light);
  box-shadow: var(--shadow-sm);
}

.faq-item .faq-question {
  padding: 20px 24px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  color: var(--ink);
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--coral);
  transition: transform 0.35s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

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

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.8;
  color: var(--muted);
  line-height: 1.8;
  font-size: 0.95rem;
}

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

/* ---------- CTA 横幅 ---------- */
.cta-banner {
  padding: 64px 48px;
  text-align: center;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--coral) 0%, #FF7E68 60%, var(--yellow) 120%);
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-banner::before {
  content: '';
  position: absolute;
  width: 220px;
  height: 220px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  top: -100px;
  right: -40px;
}

.cta-banner::after {
  content: '✦';
  position: absolute;
  left: 30px;
  bottom: 20px;
  font-size: 2.4rem;
  opacity: 0.2;
  color: #FFFFFF;
}

.cta-banner h2 {
  color: #FFFFFF;
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 2;
}

.cta-banner p {
  max-width: 500px;
  margin: 0 auto 32px;
  opacity: 0.85;
  position: relative;
  z-index: 2;
  font-size: 1rem;
}

.cta-banner .btn-primary {
  background: #FFFFFF;
  color: var(--coral);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  position: relative;
  z-index: 2;
}

.cta-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 36px rgba(0,0,0,0.2);
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 64px 0 32px;
  background: linear-gradient(160deg, var(--cream) 0%, var(--teal-soft) 100%);
  color: var(--ink);
  position: relative;
  border-top: 4px solid var(--teal);
  margin-top: 32px;
}

.site-footer .container {
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

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

.footer-brand p {
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 260px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.88rem;
  font-weight: 800;
  margin-bottom: 18px;
  color: var(--ink);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.footer-col a {
  display: block;
  padding: 5px 0;
  font-size: 0.88rem;
  color: var(--muted);
  text-decoration: none;
  transition: all 0.3s ease;
}

.footer-col a:hover {
  color: var(--coral);
  transform: translateX(5px);
}

.footer-bottom {
  border-top: 1px solid rgba(0,133,139,0.15);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

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

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.75;
  color: var(--muted);
  text-align: center;
  line-height: 1.8;
}

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

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

/* ---------- 动画 ---------- */
@keyframes blobFloat {
  0% {
    transform: translateY(0) rotate(0deg) scale(1);
  }
  100% {
    transform: translateY(-30px) rotate(10deg) scale(1.05);
  }
}

@keyframes blobFloat2 {
  0% {
    transform: translateY(0) rotate(0deg) scale(1);
  }
  100% {
    transform: translateY(20px) rotate(-8deg) scale(1.08);
  }
}

@keyframes floatY {
  0%, 100% {
    transform: translateY(0) rotate(2deg);
  }
  50% {
    transform: translateY(-12px) rotate(1.5deg);
  }
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero {
    flex-direction: column;
    padding: 120px 0 60px;
    gap: 32px;
  }

  .hero-image {
    flex: none;
    width: 100%;
    max-width: 420px;
    transform: rotate(0deg);
  }

  .feature-block {
    gap: 40px;
  }
}

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

  .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;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--cream);
    padding: 120px 40px 40px;
    align-items: center;
    justify-content: center;
    gap: 20px;
    z-index: 1100;
  }

  .main-nav.open a {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--ink);
  }

  .main-nav.open .nav-cta {
    font-size: 1rem;
    margin-top: 12px;
  }

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

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

@media (max-width: 480px) {
  .container {
    padding: 0 18px;
  }

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

  .stats-bar {
    gap: 12px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

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

  .cta-banner {
    padding: 48px 28px;
  }

  .cta-banner h2 {
    font-size: 1.6rem;
  }

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