*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

:root {
  --paper: #FFF9F0;
  --paper-2: #F4EEE2;
  --paper-3: #EDE5D6;
  --ink: #171310;
  --ink-soft: rgba(23,19,16,0.62);
  --violet: #5B2EFF;
  --violet-soft: rgba(91,46,255,0.16);
  --lime: #CCFF3E;
  --coral: #FF6A3D;
  --pink: #FF3D8B;
  --line: rgba(23,19,16,0.14);
  --shadow-sm: 5px 5px 0 rgba(23,19,16,0.9);
  --shadow-lg: 10px 10px 0 rgba(23,19,16,0.9);
  --radius: 18px;
}

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background-color: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 92% -4%, rgba(204,255,62,0.55), transparent 32%),
    radial-gradient(circle at -6% 52%, rgba(91,46,255,0.10), transparent 38%),
    radial-gradient(circle at 74% 108%, rgba(255,61,139,0.10), transparent 34%);
}

::selection { background: var(--violet); color: var(--lime); }

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

a { color: inherit; }

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

.section { padding: 80px 0; position: relative; }

.section:nth-child(even) {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* ============ 导航 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,249,240,0.82);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--line);
}

.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: 900;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--ink);
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: var(--violet);
  color: var(--lime);
  box-shadow: 3px 3px 0 var(--ink);
  transform: rotate(-6deg);
  transition: transform .35s cubic-bezier(.2,.8,.3,1.2), box-shadow .35s ease;
}

.logo:hover .logo-icon {
  transform: rotate(6deg) scale(1.06);
  box-shadow: 5px 5px 0 var(--ink);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.main-nav a {
  position: relative;
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  color: rgba(23,19,16,0.74);
  transition: color .25s ease;
}

.main-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: var(--violet);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .32s cubic-bezier(.2,.8,.3,1);
}

.main-nav a:hover { color: var(--ink); }
.main-nav a:hover::after { transform: scaleX(1); }

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

.nav-cta {
  padding: 9px 22px;
  border-radius: 999px;
  color: #fff !important;
  font-weight: 700;
  background: var(--violet);
  box-shadow: 4px 4px 0 rgba(23,19,16,0.9);
  transition: transform .2s ease, box-shadow .2s ease;
}

.nav-cta:hover {
  transform: translate(-2px,-2px);
  box-shadow: 6px 6px 0 rgba(23,19,16,0.9);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1.5px solid var(--ink);
  background: var(--lime);
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink);
}

/* ============ 首页 Hero ============ */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 148px 0 96px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -140px;
  right: -120px;
  width: 460px;
  height: 460px;
  border-radius: 50% 42% 58% 46%;
  background: radial-gradient(circle at 35% 30%, rgba(204,255,62,0.95), rgba(204,255,62,0) 68%);
  filter: blur(2px);
  z-index: 0;
  animation: blobFloat 14s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -180px;
  left: -100px;
  width: 400px;
  height: 400px;
  border-radius: 55% 45% 40% 60%;
  background: radial-gradient(circle at 60% 40%, rgba(91,46,255,0.30), rgba(91,46,255,0) 70%);
  z-index: 0;
  animation: blobFloat 18s ease-in-out infinite reverse;
}

@keyframes blobFloat {
  0%, 100% { transform: translate(0,0) rotate(0deg); }
  50% { transform: translate(-26px, 24px) rotate(14deg); }
}

.hero .container { position: relative; z-index: 1; }

.hero-content { max-width: 720px; }

.hero-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 7px 18px;
  border-radius: 999px;
  margin-bottom: 22px;
  background: var(--lime);
  color: var(--ink);
  border: 1.5px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
}

.hero h1 {
  font-size: clamp(2.6rem, 6.2vw, 4.4rem);
  line-height: 1.03;
  letter-spacing: -0.035em;
  font-weight: 900;
  margin-bottom: 24px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--violet) 0%, var(--pink) 55%, var(--coral) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
}

.hero h1 span {
  position: relative;
  display: inline-block;
  z-index: 0;
}

.hero h1 span::after {
  content: '';
  position: absolute;
  left: -4px;
  right: -4px;
  bottom: 0.08em;
  height: 0.34em;
  background: var(--lime);
  z-index: -1;
  border-radius: 4px;
  transform: rotate(-1.2deg);
}

.hero p {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 560px;
  margin-bottom: 34px;
}

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

.hero-image {
  border-radius: 20px;
  overflow: hidden;
  border: 1.5px solid var(--ink);
  box-shadow: 12px 12px 0 var(--violet-soft), 12px 12px 0 1px var(--ink);
  margin-top: 56px;
}

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

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform .22s cubic-bezier(.2,.8,.3,1), box-shadow .22s ease, background .22s ease, color .22s ease;
}

.btn-primary {
  color: #fff;
  background: var(--violet);
  box-shadow: 5px 5px 0 var(--ink);
}

.btn-primary:hover {
  transform: translate(-3px,-3px);
  box-shadow: 8px 8px 0 var(--ink);
}

.btn-primary:active {
  transform: translate(1px,1px);
  box-shadow: 3px 3px 0 var(--ink);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--ink);
  color: var(--ink);
  box-shadow: 5px 5px 0 rgba(23,19,16,0.14);
}

.btn-outline:hover {
  background: var(--lime);
  transform: translate(-3px,-3px);
  box-shadow: 8px 8px 0 var(--ink);
}

/* ============ 标签 / 标题 ============ */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 16px;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--violet-soft);
  color: var(--violet);
  border: 1px solid rgba(91,46,255,0.28);
}

.section-title {
  font-size: clamp(1.85rem, 3.6vw, 2.6rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.section-desc {
  max-width: 600px;
  color: var(--ink-soft);
  margin-bottom: 44px;
  font-size: 1rem;
}

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

/* ============ 卡片网格 ============ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 26px;
}

.category-card {
  border-radius: var(--radius);
  padding: 30px 28px;
  border: 1.5px solid var(--ink);
  background: #fff;
  box-shadow: 6px 6px 0 rgba(23,19,16,0.9);
  transition: transform .28s cubic-bezier(.2,.8,.3,1), box-shadow .28s ease, background .28s ease;
}

.category-card:hover {
  transform: translate(-4px,-4px);
  box-shadow: 12px 12px 0 rgba(23,19,16,0.9);
  background: #FFFDF8;
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.3rem;
  border: 1.5px solid var(--ink);
  background: var(--lime);
  box-shadow: 3px 3px 0 var(--ink);
}

.category-card:nth-child(3n+2) .card-icon { background: var(--violet); color: #fff; }
.category-card:nth-child(3n) .card-icon { background: var(--coral); color: #fff; }

.category-card h3 {
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.category-card p {
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-bottom: 18px;
}

.card-link {
  font-weight: 800;
  font-size: 0.82rem;
  text-decoration: none;
  color: var(--violet);
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .25s ease, color .25s ease;
}

.card-link::after { content: '→'; transition: transform .25s ease; }
.card-link:hover { color: var(--ink); gap: 10px; }
.card-link:hover::after { transform: translateX(3px); }

/* ============ 特性块 ============ */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  border: 1.5px solid var(--ink);
  box-shadow: 12px 12px 0 var(--lime), 12px 12px 0 1.5px var(--ink);
}

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

.feature-text h2,
.feature-text .section-title { margin-bottom: 16px; }

.feature-text > p {
  color: var(--ink-soft);
  margin-bottom: 24px;
}

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

.feature-list li {
  padding: 9px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 0.96rem;
}

.feature-list li::before {
  content: '✓';
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 900;
  color: var(--ink);
  background: var(--lime);
  border: 1.5px solid var(--ink);
}

/* ============ 数据条 ============ */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  text-align: center;
}

.stat-item {
  padding: 28px 20px;
  border-radius: var(--radius);
  border: 1.5px solid var(--ink);
  background: #fff;
  box-shadow: 5px 5px 0 rgba(23,19,16,0.9);
  transition: transform .28s cubic-bezier(.2,.8,.3,1), box-shadow .28s ease;
}

.stat-item:hover {
  transform: translate(-3px,-3px);
  box-shadow: 9px 9px 0 rgba(23,19,16,0.9);
}

.stat-item:nth-child(2n) { background: var(--lime); }
.stat-item:nth-child(3n) { background: #fff; }

.stat-number {
  font-size: clamp(1.9rem, 3.4vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(115deg, var(--violet) 0%, var(--pink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-item:nth-child(2n) .stat-number {
  background: none;
  -webkit-text-fill-color: var(--ink);
  color: var(--ink);
}

.stat-label {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-top: 8px;
  letter-spacing: 0.06em;
}

.stat-item:nth-child(2n) .stat-label { color: rgba(23,19,16,0.7); }

/* ============ 内容墙 ============ */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px;
}

.content-wall-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1.5px solid var(--ink);
  background: #fff;
  box-shadow: 6px 6px 0 rgba(23,19,16,0.9);
  transition: transform .28s cubic-bezier(.2,.8,.3,1), box-shadow .28s ease;
}

.content-wall-item:hover {
  transform: translate(-4px,-4px);
  box-shadow: 12px 12px 0 var(--violet);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1.5px solid var(--ink);
  transition: transform .6s cubic-bezier(.2,.8,.3,1);
}

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

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

.content-wall-body h3 {
  font-size: 1.04rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.content-wall-body p {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

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

.faq-item {
  border: 1.5px solid var(--ink);
  border-radius: 14px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  box-shadow: 4px 4px 0 rgba(23,19,16,0.9);
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
}

.faq-item:hover {
  transform: translate(-2px,-2px);
  box-shadow: 7px 7px 0 rgba(23,19,16,0.9);
}

.faq-item.open {
  background: var(--paper);
  box-shadow: 7px 7px 0 var(--violet);
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 800;
  font-size: 0.98rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-item .faq-question::after {
  content: '+';
  flex: 0 0 auto;
  font-size: 1.4rem;
  line-height: 1;
  font-weight: 700;
  color: var(--violet);
  transition: transform .3s cubic-bezier(.2,.8,.3,1), color .3s ease;
}

.faq-item.open .faq-question::after {
  transform: rotate(135deg);
  color: var(--coral);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

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

/* ============ CTA横幅 ============ */
.cta-banner {
  padding: 64px 32px;
  text-align: center;
  border-radius: 26px;
  color: #fff;
  background: linear-gradient(118deg, #5B2EFF 0%, #8B2EFF 42%, #FF3D8B 100%);
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 60px -24px rgba(91,46,255,0.65);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(204,255,62,0.32);
  filter: blur(4px);
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -90px;
  left: -40px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255,255,255,0.16);
}

.cta-banner > * { position: relative; z-index: 1; }

.cta-banner h2 {
  color: #fff;
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 12px;
}

.cta-banner p {
  color: rgba(255,255,255,0.84);
  max-width: 520px;
  margin: 0 auto 28px;
  font-size: 1rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: var(--violet);
  box-shadow: 5px 5px 0 rgba(23,19,16,0.35);
}

.cta-banner .btn-primary:hover {
  background: var(--lime);
  color: var(--ink);
  box-shadow: 8px 8px 0 rgba(23,19,16,0.45);
}

/* ============ 页脚 ============ */
.site-footer {
  padding: 56px 0 28px;
  background: var(--paper-2);
  border-top: 1.5px solid var(--ink);
}

.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(--ink-soft);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 16px;
  color: var(--violet);
}

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

.footer-col li { margin-bottom: 9px; }

.footer-col a {
  text-decoration: none;
  font-size: 0.9rem;
  color: var(--ink-soft);
  transition: color .22s ease, padding-left .22s ease;
}

.footer-col a:hover {
  color: var(--ink);
  padding-left: 5px;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  margin-top: 44px;
  padding-top: 22px;
  text-align: center;
  font-size: 0.84rem;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
}

/* ============ 工具类 ============ */
.text-accent { color: var(--violet); }
.text-center { text-align: center; }

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

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

/* ============ 响应式 ============ */
@media (max-width: 900px) {
  .feature-block { gap: 36px; }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .hero { padding: 128px 0 72px; }
  .feature-block { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }

  .main-nav { display: none; }
  .menu-toggle { display: flex; }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: rgba(255,249,240,0.98);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    padding: 22px 24px 28px;
    border-bottom: 1.5px solid var(--ink);
  }

  .main-nav.open a { font-size: 1rem; padding: 6px 0; }
  .main-nav.open .nav-cta { margin-top: 12px; padding: 11px 24px; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .cards-grid,
  .content-wall,
  .stats-bar { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; align-items: stretch; }
  .hero-buttons .btn { justify-content: center; }
  .cta-banner { padding: 44px 22px; }
  .section-title { letter-spacing: -0.02em; }
}