:root{
  --paper:#FBF6EC;
  --paper-2:#F4ECDC;
  --paper-3:#EDE2CD;
  --surface:#FFFDF7;
  --ink:#231D16;
  --ink-soft:#5E5346;
  --accent:#FF4D2E;
  --accent-soft:#FFD8CE;
  --blue:#2B2AD1;
  --blue-soft:#DDDCFB;
  --mint:#8FE3C4;
  --honey:#FFCA3A;
  --line:rgba(35,29,22,0.16);
  --stroke:2px solid #231D16;
  --pop-sm:4px 4px 0 #231D16;
  --pop-md:6px 6px 0 #231D16;
  --pop-lg:10px 10px 0 #231D16;
  --r-sm:6px;
  --r-md:10px;
  --r-pill:999px;
}

*, *::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-color:var(--paper);
  background-image:radial-gradient(rgba(35,29,22,0.06) 1px, transparent 1px);
  background-size:22px 22px;
  color:var(--ink);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

::selection { background:var(--honey); color:var(--ink); }

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); }

.section:nth-child(even)::before {
  content:'';
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:var(--line);
}

.section:nth-child(odd) { background:transparent; }

/* 导航 */
.site-header {
  position:fixed;
  top:0;
  left:0;
  width:100%;
  z-index:1000;
  background:rgba(251,246,236,0.88);
  backdrop-filter:blur(14px) saturate(1.4);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  border-bottom:var(--stroke);
}

.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:800;
  font-size:1.1rem;
  letter-spacing:-0.01em;
  text-decoration:none;
  color:inherit;
}

.logo-icon {
  width:38px;
  height:38px;
  border-radius:12px 4px 12px 4px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1rem;
  font-weight:900;
  background:var(--accent);
  color:#fff;
  border:var(--stroke);
  box-shadow:3px 3px 0 var(--blue);
  transition:transform .25s cubic-bezier(.2,.8,.3,1.2), box-shadow .25s ease;
}

.logo:hover .logo-icon {
  transform:rotate(-8deg) scale(1.06);
  box-shadow:5px 5px 0 var(--blue);
}

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

.main-nav a {
  position:relative;
  text-decoration:none;
  font-size:0.9rem;
  font-weight:600;
  letter-spacing:0.02em;
  color:var(--ink-soft);
  transition:color .2s ease;
  padding-bottom:2px;
}

.main-nav a::after {
  content:'';
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--accent);
  transition:width .3s cubic-bezier(.2,.8,.3,1);
}

.main-nav a:hover { color:var(--ink); }
.main-nav a:hover::after { width:100%; }

.nav-cta {
  padding:9px 22px;
  border-radius:var(--r-pill);
  color:#fff!important;
  font-weight:700;
  background:var(--blue);
  border:var(--stroke);
  box-shadow:3px 3px 0 var(--ink);
  transition:transform .2s cubic-bezier(.2,.8,.3,1.2), box-shadow .2s ease, background .2s ease;
}

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

.nav-cta:hover {
  background:var(--accent);
  transform:translate(-2px,-2px);
  box-shadow:5px 5px 0 var(--ink);
}

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

/* Hero */
.hero {
  position:relative;
  min-height:70vh;
  display:flex;
  align-items:center;
  padding:130px 0 70px;
  overflow:hidden;
}

.hero::before {
  content:'';
  position:absolute;
  top:-160px;
  right:-120px;
  width:520px;
  height:520px;
  border-radius:50%;
  background:radial-gradient(circle at 30% 30%, var(--accent-soft), rgba(255,216,206,0) 68%);
  pointer-events:none;
}

.hero::after {
  content:'';
  position:absolute;
  bottom:-140px;
  left:-160px;
  width:460px;
  height:460px;
  border-radius:50%;
  background:radial-gradient(circle at 60% 40%, var(--blue-soft), rgba(221,220,251,0) 70%);
  pointer-events:none;
}

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

.hero-content { max-width:760px; }

.hero-eyebrow {
  display:inline-block;
  font-size:0.78rem;
  font-weight:800;
  letter-spacing:0.22em;
  text-transform:uppercase;
  padding:6px 16px;
  border-radius:var(--r-pill);
  margin-bottom:22px;
  background:var(--mint);
  color:var(--ink);
  border:var(--stroke);
  box-shadow:var(--pop-sm);
}

.hero h1 {
  font-size:clamp(2.3rem, 6vw, 4.1rem);
  line-height:1.08;
  font-weight:900;
  letter-spacing:-0.035em;
  margin-bottom:22px;
  text-wrap:balance;
}

.hero h1 em {
  font-style:normal;
  color:var(--accent);
  position:relative;
  white-space:nowrap;
}

.hero h1 em::after {
  content:'';
  position:absolute;
  left:0;
  right:0;
  bottom:0.06em;
  height:0.28em;
  background:var(--honey);
  z-index:-1;
  border-radius:2px;
}

.hero p {
  font-size:1.08rem;
  opacity:0.78;
  max-width:560px;
  margin-bottom:34px;
  line-height:1.85;
}

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

.hero-image {
  border-radius:var(--r-md);
  overflow:hidden;
  border:var(--stroke);
  box-shadow:var(--pop-lg);
  background:var(--surface);
  transition:transform .35s cubic-bezier(.2,.8,.3,1.2), box-shadow .35s ease;
}

.hero-image:hover {
  transform:translate(-3px,-3px);
  box-shadow:13px 13px 0 var(--ink);
}

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

/* 按钮 */
.btn {
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:14px 30px;
  border-radius:var(--r-pill);
  font-weight:700;
  font-size:0.95rem;
  letter-spacing:0.01em;
  cursor:pointer;
  border:var(--stroke);
  text-decoration:none;
  transition:transform .22s cubic-bezier(.2,.8,.3,1.2), box-shadow .22s ease, background .22s ease, color .22s ease;
  white-space:nowrap;
}

.btn:active { transform:translate(2px,2px); box-shadow:0 0 0 var(--ink); }

.btn-primary {
  color:#fff;
  background:var(--accent);
  box-shadow:var(--pop-sm);
}

.btn-primary:hover {
  background:var(--blue);
  transform:translate(-3px,-3px);
  box-shadow:7px 7px 0 var(--ink);
}

.btn-outline {
  background:transparent;
  border:var(--stroke);
  color:var(--ink);
  box-shadow:var(--pop-sm);
}

.btn-outline:hover {
  background:var(--honey);
  transform:translate(-3px,-3px);
  box-shadow:7px 7px 0 var(--ink);
}

/* 标签 / 标题 */
.section-label {
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:0.76rem;
  font-weight:800;
  letter-spacing:0.3em;
  text-transform:uppercase;
  margin-bottom:16px;
  color:var(--accent);
}

.section-label::before {
  content:'';
  width:10px;
  height:10px;
  background:var(--accent);
  border:var(--stroke);
  transform:rotate(45deg);
  flex:none;
}

.section-title {
  font-size:clamp(1.65rem, 3.6vw, 2.5rem);
  font-weight:900;
  line-height:1.18;
  letter-spacing:-0.03em;
  margin-bottom:16px;
  text-wrap:balance;
}

.section-desc {
  max-width:620px;
  opacity:0.74;
  margin-bottom:44px;
  font-size:1rem;
  line-height:1.85;
}

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

.category-card {
  position:relative;
  border-radius:var(--r-md);
  padding:30px 28px;
  background:var(--surface);
  border:var(--stroke);
  box-shadow:var(--pop-sm);
  transition:transform .28s cubic-bezier(.2,.8,.3,1.2), box-shadow .28s ease, background .28s ease;
  overflow:hidden;
}

.category-card::after {
  content:'';
  position:absolute;
  top:-28px;
  right:-28px;
  width:66px;
  height:66px;
  border-radius:50%;
  background:var(--paper-2);
  border:var(--stroke);
  opacity:0;
  transition:opacity .28s ease, transform .28s ease;
}

.category-card:hover {
  transform:translate(-4px,-4px);
  box-shadow:9px 9px 0 var(--ink);
  background:#fff;
}

.category-card:hover::after { opacity:1; transform:scale(1.08); }

.category-card:nth-child(3n+1) .card-icon { background:var(--accent-soft); }
.category-card:nth-child(3n+2) .card-icon { background:var(--mint); }
.category-card:nth-child(3n+3) .card-icon { background:var(--honey); }

.card-icon {
  width:50px;
  height:50px;
  border-radius:14px 5px 14px 5px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:18px;
  font-size:1.3rem;
  border:var(--stroke);
  box-shadow:3px 3px 0 var(--ink);
  transition:transform .3s cubic-bezier(.2,.8,.3,1.2);
}

.category-card:hover .card-icon { transform:rotate(-7deg); }

.category-card h3 {
  font-size:1.12rem;
  font-weight:800;
  letter-spacing:-0.015em;
  margin-bottom:8px;
}

.category-card p {
  font-size:0.92rem;
  opacity:0.7;
  line-height:1.8;
  margin-bottom:16px;
}

.card-link {
  font-weight:700;
  font-size:0.84rem;
  letter-spacing:0.04em;
  text-decoration:none;
  color:var(--blue);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:gap .22s ease, color .22s ease;
}

.card-link::after { content:'→'; }

.card-link:hover { gap:12px; color:var(--accent); }

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

.feature-image {
  border-radius:var(--r-md);
  overflow:hidden;
  border:var(--stroke);
  box-shadow:var(--pop-md);
  background:var(--surface);
  transition:transform .3s cubic-bezier(.2,.8,.3,1.2), box-shadow .3s ease;
}

.feature-image:hover {
  transform:translate(-4px,-4px) rotate(-0.6deg);
  box-shadow:11px 11px 0 var(--ink);
}

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

.feature-text h3 {
  font-size:clamp(1.4rem,2.6vw,1.9rem);
  font-weight:900;
  letter-spacing:-0.025em;
  line-height:1.25;
  margin-bottom:14px;
}

.feature-text p { opacity:0.76; margin-bottom:20px; line-height:1.85; }

.feature-list { list-style:none; display:grid; gap:10px; }

.feature-list li {
  padding:8px 0;
  display:flex;
  align-items:center;
  gap:12px;
  font-size:0.95rem;
  font-weight:500;
}

.feature-list li::before {
  content:'✓';
  font-weight:900;
  font-size:0.7rem;
  width:24px;
  height:24px;
  flex:none;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--mint);
  color:var(--ink);
  border:var(--stroke);
}

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

.stat-item {
  padding:30px 20px;
  border-radius:var(--r-md);
  background:var(--surface);
  border:var(--stroke);
  box-shadow:var(--pop-sm);
  transition:transform .26s cubic-bezier(.2,.8,.3,1.2), box-shadow .26s ease;
}

.stat-item:nth-child(1) { background:var(--accent-soft); }
.stat-item:nth-child(2) { background:var(--blue-soft); }
.stat-item:nth-child(3) { background:var(--mint); }
.stat-item:nth-child(4) { background:var(--honey); }

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

.stat-number {
  font-size:clamp(1.9rem,3.4vw,2.5rem);
  font-weight:900;
  letter-spacing:-0.04em;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}

.stat-label {
  font-size:0.85rem;
  font-weight:600;
  opacity:0.62;
  margin-top:8px;
  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(--r-md);
  overflow:hidden;
  background:var(--surface);
  border:var(--stroke);
  box-shadow:var(--pop-sm);
  transition:transform .28s cubic-bezier(.2,.8,.3,1.2), box-shadow .28s ease;
}

.content-wall-item:hover {
  transform:translate(-4px,-4px);
  box-shadow:9px 9px 0 var(--ink);
}

.content-wall-item img {
  width:100%;
  height:200px;
  object-fit:cover;
  border-bottom:var(--stroke);
  transition:transform .5s cubic-bezier(.2,.8,.3,1), filter .4s ease;
}

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

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

.content-wall-body h3 {
  font-size:1.05rem;
  font-weight:800;
  letter-spacing:-0.015em;
  margin-bottom:8px;
}

.content-wall-body p {
  font-size:0.9rem;
  opacity:0.7;
  line-height:1.8;
}

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

.faq-item {
  border:var(--stroke);
  border-radius:var(--r-sm);
  margin-bottom:12px;
  overflow:hidden;
  cursor:pointer;
  background:var(--surface);
  box-shadow:3px 3px 0 rgba(35,29,22,0.9);
  transition:transform .22s ease, box-shadow .22s ease, background .22s ease;
}

.faq-item:hover { transform:translate(-2px,-2px); box-shadow:5px 5px 0 var(--ink); }

.faq-item .faq-question {
  padding:18px 22px;
  font-weight:700;
  font-size:0.98rem;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.faq-item .faq-question::after {
  content:'+';
  flex:none;
  width:26px;
  height:26px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--honey);
  border:var(--stroke);
  font-weight:900;
  font-size:0.95rem;
  line-height:1;
  transition:transform .3s cubic-bezier(.2,.8,.3,1.2), background .25s ease;
}

.faq-item.open { background:#fff; }

.faq-item.open .faq-question::after {
  content:'+';
  transform:rotate(45deg);
  background:var(--accent);
  color:#fff;
}

.faq-item .faq-answer {
  padding:0 22px 18px;
  display:none;
  opacity:0.72;
  font-size:0.94rem;
  line-height:1.85;
  border-top:1px dashed var(--line);
  margin-top:-2px;
  padding-top:16px;
}

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

/* CTA 横幅 */
.cta-banner {
  position:relative;
  padding:64px 32px;
  text-align:center;
  border-radius:var(--r-md);
  color:#fff;
  background:var(--blue);
  background-image:
    radial-gradient(circle at 12% 18%, rgba(143,227,196,0.38), transparent 42%),
    radial-gradient(circle at 88% 82%, rgba(255,202,58,0.34), transparent 46%);
  border:var(--stroke);
  box-shadow:var(--pop-lg);
  overflow:hidden;
}

.cta-banner::before {
  content:'';
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,0.18) 1px, transparent 1px);
  background-size:18px 18px;
  pointer-events:none;
}

.cta-banner h2 {
  position:relative;
  color:#fff;
  font-size:clamp(1.6rem,3.4vw,2.3rem);
  font-weight:900;
  letter-spacing:-0.03em;
  line-height:1.2;
  margin-bottom:14px;
}

.cta-banner p {
  position:relative;
  max-width:560px;
  margin:0 auto 28px;
  opacity:0.86;
  line-height:1.85;
}

.cta-banner .btn-primary {
  position:relative;
  background:#fff;
  color:var(--ink);
  box-shadow:var(--pop-sm);
}

.cta-banner .btn-primary:hover {
  background:var(--honey);
  color:var(--ink);
  transform:translate(-3px,-3px);
  box-shadow:7px 7px 0 var(--ink);
}

/* 页脚 */
.site-footer {
  padding:64px 0 28px;
  background:var(--paper-3);
  border-top:var(--stroke);
  position:relative;
}

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

.footer-grid {
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:44px;
}

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

.footer-brand p {
  font-size:0.92rem;
  opacity:0.7;
  line-height:1.85;
  max-width:340px;
}

.footer-col h4 {
  font-size:0.78rem;
  font-weight:800;
  letter-spacing:0.22em;
  text-transform:uppercase;
  margin-bottom:16px;
  color:var(--ink);
}

.footer-col ul { list-style:none; display:grid; gap:10px; }

.footer-col a {
  font-size:0.9rem;
  text-decoration:none;
  color:var(--ink-soft);
  transition:color .2s ease, padding-left .2s ease;
}

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

.footer-bottom {
  border-top:1px solid var(--line);
  margin-top:44px;
  padding-top:22px;
  text-align:center;
  font-size:0.82rem;
  letter-spacing:0.03em;
  opacity:0.72;
}

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

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

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

.seo-description {
  max-width:600px;
  margin:0 auto 48px;
  opacity:0.7;
  line-height:1.9;
}

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

/* 响应式 */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns:1.6fr 1fr 1fr; }
  .feature-block { gap:40px; }
}

@media (max-width: 768px) {
  .section { padding:60px 0; }
  .hero { padding:110px 0 56px; min-height:auto; }
  .feature-block { grid-template-columns:1fr; gap:32px; }
  .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; }

  .main-nav.open {
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    position:absolute;
    top:68px;
    left:0;
    width:100%;
    background:var(--paper);
    padding:22px 24px;
    gap:16px;
    border-bottom:var(--stroke);
    box-shadow:0 10px 0 rgba(35,29,22,0.08);
  }

  .main-nav.open a { font-size:1rem; }

  .main-nav.open .nav-cta { color:#fff!important; }
}

@media (max-width: 480px) {
  .container { padding:0 18px; }
  .header-inner { 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:48px 20px; }
  .hero-eyebrow { font-size:0.7rem; letter-spacing:0.16em; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration:0.01ms!important;
    transition-duration:0.01ms!important;
    scroll-behavior:auto!important;
  }
}