:root{
  --cream:#FFFCF3;
  --cream-2:#F7F1E4;
  --ink:#221C3A;
  --ink-soft:#5B5378;
  --lime:#E4FF57;
  --coral:#FF5E5B;
  --peri:#7C6BFF;
  --mint:#A8F0DC;
  --blush:#FFB3C7;
  --line:rgba(34,28,58,0.14);
  --radius:22px;
  --hard:6px 6px 0 var(--ink);
}

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

html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }

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;
  letter-spacing:0.01em;
}

img { display:block; max-width:100%; }
a { color:inherit; }
button { font-family:inherit; }

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

.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:#F7F1E4; }

/* 导航 — 固定顶部 */
.site-header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(255,252,243,0.92);
  backdrop-filter:blur(14px) saturate(150%);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:'';
  position:absolute; top:0; left:0; width:100%; height:4px;
  background:linear-gradient(90deg,
    var(--coral) 0 25%,
    var(--lime) 25% 50%,
    var(--peri) 50% 75%,
    var(--mint) 75% 100%);
}

.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:1.15rem; letter-spacing:-0.02em;
  text-decoration:none; color:var(--ink); white-space:nowrap;
}

.logo-icon {
  width:36px; height:36px; border-radius:12px;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem;
  background:linear-gradient(135deg,var(--lime),var(--mint));
  border:2px solid var(--ink);
  box-shadow:2px 2px 0 var(--ink);
  transition:transform .25s cubic-bezier(.34,1.56,.64,1);
}
.logo:hover .logo-icon { transform:rotate(-8deg) scale(1.06); }

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

.main-nav a {
  text-decoration:none; font-size:0.9rem; font-weight:600;
  color:var(--ink); transition:color .2s, opacity .2s;
  position:relative; padding:4px 0;
}
.main-nav a::after{
  content:'';
  position:absolute; left:0; bottom:0;
  width:100%; height:2px; border-radius:2px;
  background:var(--coral);
  transform:scaleX(0); transform-origin:right;
  transition:transform .3s cubic-bezier(.65,0,.35,1);
}
.main-nav a:hover { color:var(--peri); }
.main-nav a:hover::after { transform:scaleX(1); transform-origin:left; }

.main-nav .accent { color:inherit; }

.nav-cta {
  padding:9px 22px; border-radius:999px;
  background:var(--ink); color:var(--cream)!important;
  font-weight:700; font-size:0.85rem;
  transition:transform .2s, box-shadow .2s, background .2s;
}
.nav-cta::after { display:none; }
.nav-cta:hover {
  color:var(--ink)!important;
  background:var(--lime);
  transform:translateY(-2px);
  box-shadow:0 6px 0 rgba(34,28,58,.9);
}

.menu-toggle {
  display:none; width:44px; height:44px; border-radius:14px;
  border:2px solid var(--ink); background:var(--lime);
  align-items:center; justify-content:center;
  font-size:1.1rem; cursor:pointer; color:var(--ink);
  box-shadow:3px 3px 0 var(--ink);
}

/* 首页Hero */
.hero {
  min-height:70vh; display:flex; align-items:center;
  position:relative; overflow:hidden;
  padding:150px 0 100px;
  background:
    radial-gradient(circle at 88% 12%, rgba(255,179,199,.45), transparent 55%),
    radial-gradient(circle at 4% 88%, rgba(168,240,220,.5), transparent 55%),
    var(--cream);
}
.hero::before{
  content:'';
  position:absolute; top:-140px; right:-120px;
  width:460px; height:460px; border-radius:50%;
  background:radial-gradient(circle, rgba(124,107,255,.30), transparent 70%);
  filter:blur(10px); pointer-events:none;
}
.hero::after{
  content:'';
  position:absolute; bottom:-180px; left:-140px;
  width:420px; height:420px; border-radius:50%;
  background:radial-gradient(circle, rgba(228,255,87,.75), transparent 70%);
  filter:blur(10px); pointer-events:none;
}

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

.hero-eyebrow {
  display:inline-block; font-size:0.8rem; font-weight:800;
  padding:6px 16px; border-radius:999px; margin-bottom:20px;
  background:var(--lime); color:var(--ink);
  border:2px solid var(--ink);
  box-shadow:3px 3px 0 var(--ink);
  letter-spacing:0.06em;
}

.hero h1 {
  font-size:clamp(2.2rem, 5.2vw, 3.6rem);
  line-height:1.08; margin-bottom:22px;
  font-weight:900; letter-spacing:-0.035em;
}
.hero h1 em {
  font-style:normal;
  background:linear-gradient(100deg,var(--coral),var(--peri));
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent; color:transparent;
}

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

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

.hero-image {
  border-radius:26px; overflow:hidden;
  border:2px solid var(--ink);
  box-shadow:10px 10px 0 var(--peri);
  margin-top:56px;
}
.hero-image img { width:100%; height:auto; }

/* 按钮 */
.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:13px 30px; border-radius:999px;
  font-weight:800; font-size:0.95rem;
  cursor:pointer; border:2px solid var(--ink);
  text-decoration:none;
  transition:transform .22s cubic-bezier(.34,1.56,.64,1),
             box-shadow .22s, background .22s, color .22s;
  white-space:nowrap;
}

.btn-primary {
  background:var(--ink); color:var(--cream);
  box-shadow:4px 4px 0 var(--peri);
}
.btn-primary:hover {
  transform:translate(-2px,-2px);
  box-shadow:7px 7px 0 var(--peri);
  background:var(--coral);
}

.btn-outline {
  background:transparent; color:var(--ink);
  border:2px solid var(--ink);
  box-shadow:4px 4px 0 rgba(34,28,58,.16);
}
.btn-outline:hover {
  background:var(--lime);
  transform:translate(-2px,-2px);
  box-shadow:7px 7px 0 var(--ink);
}

/* 标签/标题 */
.section-label {
  display:inline-block; font-size:0.78rem; font-weight:800;
  letter-spacing:0.22em; text-transform:uppercase;
  margin-bottom:14px; color:var(--coral);
}
.section-label::before{
  content:'';
  display:inline-block; width:24px; height:2px;
  background:currentColor; vertical-align:middle;
  margin-right:10px; border-radius:2px;
}

.section-title {
  font-size:clamp(1.7rem, 3.6vw, 2.6rem);
  margin-bottom:16px; font-weight:900;
  letter-spacing:-0.03em; line-height:1.18;
}

.section-desc {
  max-width:600px; margin-bottom:44px;
  color:var(--ink-soft); font-size:1.02rem;
}

/* 卡片网格 */
.cards-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:24px;
}

.category-card {
  border-radius:var(--radius); padding:30px 28px;
  border:2px solid var(--ink);
  background:#FFFCF3;
  transition:transform .28s cubic-bezier(.34,1.56,.64,1), box-shadow .28s, background .28s;
  box-shadow:4px 4px 0 rgba(34,28,58,.10);
}
.category-card:nth-child(4n+1){ background:#FFF8E4; }
.category-card:nth-child(4n+2){ background:#F2EFFF; }
.category-card:nth-child(4n+3){ background:#E9FBF5; }
.category-card:nth-child(4n+4){ background:#FFF0F4; }

.category-card:hover {
  transform:translate(-3px,-5px);
  box-shadow:9px 9px 0 var(--ink);
}

.card-icon {
  width:52px; height:52px; border-radius:16px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px; font-size:1.35rem;
  border:2px solid var(--ink);
  background:var(--lime);
  box-shadow:3px 3px 0 var(--ink);
}
.category-card:nth-child(4n+2) .card-icon { background:var(--blush); }
.category-card:nth-child(4n+3) .card-icon { background:var(--mint); }
.category-card:nth-child(4n+4) .card-icon { background:var(--peri); }

.category-card h3 {
  font-size:1.12rem; font-weight:800;
  margin-bottom:8px; letter-spacing:-0.01em;
}
.category-card p {
  font-size:0.9rem; color:var(--ink-soft); margin-bottom:16px;
}

.card-link {
  font-weight:800; font-size:0.85rem;
  text-decoration:none; color:var(--ink);
  display:inline-flex; align-items:center; gap:6px;
  border-bottom:2px solid var(--coral);
  padding-bottom:2px;
  transition:gap .2s, color .2s;
}
.card-link::after { content:'→'; transition:transform .25s; }
.card-link:hover { color:var(--coral); gap:10px; }
.card-link:hover::after { transform:translateX(2px); }

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

.feature-image {
  border-radius:26px; overflow:hidden;
  border:2px solid var(--ink);
  box-shadow:10px 10px 0 var(--mint);
}
.feature-image img { width:100%; height:auto; }

.feature-text h3 {
  font-size:clamp(1.3rem, 2.6vw, 1.9rem);
  font-weight:900; letter-spacing:-0.025em;
  margin-bottom:14px; line-height:1.25;
}
.feature-text > p { color:var(--ink-soft); margin-bottom:22px; }

.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;
  border-bottom:1px dashed var(--line);
}
.feature-list li:last-child { border-bottom:none; }
.feature-list li::before {
  content:'✓';
  font-weight:900; font-size:0.72rem;
  width:24px; height:24px; flex:0 0 24px;
  display:inline-flex; align-items:center; justify-content:center;
  border-radius:50%;
  background:var(--lime); color:var(--ink);
  border:2px solid var(--ink);
}

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

.stat-item {
  padding:30px 18px; border-radius:20px;
  border:2px solid var(--ink);
  background:#FFFCF3;
  box-shadow:4px 4px 0 rgba(34,28,58,.10);
  transition:transform .25s, box-shadow .25s;
}
.stat-item:hover {
  transform:translate(-3px,-4px);
  box-shadow:8px 8px 0 var(--peri);
}

.stat-number {
  font-size:clamp(1.8rem, 4vw, 2.5rem);
  font-weight:900; letter-spacing:-0.05em; line-height:1;
  background:linear-gradient(100deg,var(--coral),var(--peri));
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent; color:transparent;
}

.stat-label {
  font-size:0.85rem; color:var(--ink-soft);
  margin-top:10px; font-weight:600; letter-spacing:0.04em;
}

/* 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:2px solid var(--ink);
  background:#FFFCF3;
  box-shadow:4px 4px 0 rgba(34,28,58,.10);
  transition:transform .28s cubic-bezier(.34,1.56,.64,1), box-shadow .28s;
}
.content-wall-item:hover {
  transform:translate(-3px,-5px);
  box-shadow:10px 10px 0 var(--peri);
}

.content-wall-item img {
  width:100%; height:200px; object-fit:cover;
  border-bottom:2px solid var(--ink);
}

.content-wall-body { padding:22px; }
.content-wall-body h3 {
  font-size:1.05rem; font-weight:800;
  margin-bottom:8px; letter-spacing:-0.01em;
}
.content-wall-body p { font-size:0.88rem; color:var(--ink-soft); }

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

.faq-item {
  border:2px solid var(--ink); border-radius:18px;
  margin-bottom:12px; overflow:hidden; cursor:pointer;
  background:#FFFCF3;
  transition:box-shadow .22s, transform .22s, background .22s;
}
.faq-item:hover { box-shadow:5px 5px 0 var(--lime); }

.faq-item .faq-question {
  padding:18px 24px; font-weight:800; font-size:1rem;
  display:flex; justify-content:space-between; align-items:center; gap:16px;
}
.faq-item .faq-question::after {
  content:'+';
  font-size:1.3rem; font-weight:900; line-height:1;
  color:var(--coral); flex:0 0 auto;
  transition:transform .28s;
}
.faq-item.open .faq-question::after { transform:rotate(45deg); }

.faq-item .faq-answer {
  padding:0 24px 18px; display:none;
  color:var(--ink-soft); font-size:0.94rem;
}
.faq-item.open { background:#F2EFFF; box-shadow:5px 5px 0 var(--ink); }
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner {
  padding:64px 32px; text-align:center;
  border-radius:32px;
  border:2px solid var(--ink);
  background:linear-gradient(120deg,var(--lime) 0%,var(--mint) 55%,var(--blush) 100%);
  box-shadow:10px 10px 0 var(--ink);
  position:relative; overflow:hidden;
}
.cta-banner::before{
  content:'';
  position:absolute; top:-90px; right:-70px;
  width:240px; height:240px; border-radius:50%;
  background:rgba(255,255,255,.45);
  pointer-events:none;
}

.cta-banner h2 {
  color:var(--ink);
  font-size:clamp(1.5rem,3.4vw,2.3rem);
  font-weight:900; letter-spacing:-0.03em;
  margin-bottom:14px; position:relative; z-index:1;
}
.cta-banner p { color:var(--ink); opacity:.75; margin-bottom:28px; position:relative; z-index:1; }

.cta-banner .btn-primary {
  background:var(--ink); color:var(--cream);
  box-shadow:4px 4px 0 rgba(255,255,255,.7);
  position:relative; z-index:1;
}
.cta-banner .btn-primary:hover {
  background:var(--coral); color:#fff;
  transform:translate(-2px,-2px);
  box-shadow:7px 7px 0 rgba(255,255,255,.85);
}

/* 页脚 */
.site-footer {
  padding:64px 0 28px;
  background:#F2EFFF;
  border-top:2px solid var(--ink);
  position:relative;
}
.site-footer::before{
  content:'';
  position:absolute; top:-2px; left:0; width:100%; height:5px;
  background:linear-gradient(90deg,
    var(--peri) 0 33%,
    var(--lime) 33% 66%,
    var(--coral) 66% 100%);
}

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

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

.footer-brand .logo { margin-bottom:14px; }
.footer-brand p {
  font-size:0.9rem; color:var(--ink-soft); max-width:320px;
}

.footer-col h4 {
  font-size:0.82rem; font-weight:900;
  letter-spacing:0.16em; text-transform:uppercase;
  margin-bottom:16px; color:var(--ink);
}
.footer-col ul { list-style:none; }
.footer-col ul li { margin-bottom:9px; }
.footer-col ul a {
  font-size:0.9rem; text-decoration:none;
  color:var(--ink-soft);
  transition:color .2s, padding-left .2s;
}
.footer-col ul a:hover { color:var(--peri); padding-left:5px; }

.footer-bottom {
  border-top:1px solid var(--line);
  margin-top:44px; padding-top:22px;
  text-align:center; font-size:0.85rem;
  color:var(--ink-soft);
}

/* 工具类 */
.text-accent {
  background:linear-gradient(100deg,var(--coral),var(--peri));
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent; color:transparent;
}
.text-center { text-align:center; }
.text-center .section-desc { margin-left:auto; margin-right:auto; }

.seo-description {
  max-width:640px; margin:0 auto 48px;
  color:var(--ink-soft); font-size:1rem;
}

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

/* 响应式 */
@media (max-width: 992px){
  .feature-block { gap:40px; }
  .footer-grid { grid-template-columns:1.5fr 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding:64px 0; }

  .feature-block { grid-template-columns:1fr; }
  .stats-bar { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }

  .hero { padding:130px 0 80px; min-height:auto; }
  .hero-image { margin-top:44px; box-shadow:7px 7px 0 var(--peri); }

  .main-nav {
    display:none;
  }
  .main-nav.open {
    display:flex; flex-direction:column;
    align-items:flex-start; gap:18px;
    position:absolute; top:68px; left:0; width:100%;
    background:var(--cream);
    padding:26px 24px 32px;
    border-bottom:2px solid var(--ink);
    box-shadow:0 14px 30px rgba(34,28,58,.12);
  }
  .main-nav.open a { font-size:1rem; }

  .menu-toggle { display:flex; }

  .cta-banner { padding:48px 22px; border-radius:26px; box-shadow:7px 7px 0 var(--ink); }
}

@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; }

  .hero h1 { font-size:2rem; }
  .category-card { padding:24px 22px; }
  .stat-item { padding:24px 16px; }
}