:root{
  --paper:#FDF8F3;
  --paper-2:#F6EDE3;
  --paper-3:#FFFDFB;
  --ink:#12232B;
  --ink-soft:#4A5C63;
  --line:#E6D9CB;
  --terracotta:#E4572E;
  --terracotta-soft:#FFE7DE;
  --teal:#0F5257;
  --teal-soft:#DCEBEA;
  --mustard:#F2B705;
  --radius:14px;
  --radius-lg:26px;
  --shadow-s:0 2px 6px rgba(18,35,43,.06);
  --shadow-m:0 14px 34px -14px rgba(18,35,43,.22);
  --shadow-l:0 30px 60px -30px rgba(18,35,43,.34);
  --ease:cubic-bezier(.22,.85,.28,1);
}

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

html{ scroll-behavior:smooth; }

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x:hidden;
  background:
    radial-gradient(1100px 520px at 88% -8%, var(--terracotta-soft) 0%, rgba(255,231,222,0) 62%),
    radial-gradient(900px 480px at -10% 42%, var(--teal-soft) 0%, rgba(220,235,234,0) 58%),
    var(--paper);
  color:var(--ink);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  letter-spacing:.01em;
}

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

/* ============ 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);
}

.section:nth-child(even)::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    repeating-linear-gradient(90deg, rgba(18,35,43,.035) 0 1px, transparent 1px 92px);
  pointer-events:none;
}

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

/* ============ 导航 ============ */
.site-header {
  position:fixed;
  top:0; left:0; width:100%;
  z-index:1000;
  background:rgba(253,248,243,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}

.site-header::after{
  content:"";
  position:absolute;
  left:0; bottom:-1px;
  width:120px; height:2px;
  background:var(--terracotta);
}

.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:8px;
  font-weight:800;
  font-size:1.2rem;
  text-decoration:none;
  color:var(--ink);
  letter-spacing:.02em;
  white-space:nowrap;
}

.logo-icon {
  width:36px; height:36px;
  border-radius:50% 50% 50% 6px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1rem;
  color:#fff;
  background:conic-gradient(from 210deg, var(--teal), var(--terracotta) 55%, var(--mustard));
  box-shadow:0 6px 16px -8px rgba(228,87,46,.9);
  transform:rotate(-6deg);
  transition:transform .35s var(--ease);
}
.logo:hover .logo-icon{ transform:rotate(6deg) scale(1.06); }

.main-nav {
  display:flex;
  align-items:center;
  gap:24px;
  list-style:none;
}

.main-nav a {
  text-decoration:none;
  font-size:.9rem;
  font-weight:500;
  color:var(--ink-soft);
  transition:.2s var(--ease);
  position:relative;
  padding:4px 0;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0; bottom:0;
  width:0; height:2px;
  background:var(--terracotta);
  transition:width .3s var(--ease);
}
.main-nav a:hover{ color:var(--ink); }
.main-nav a:hover::after{ width:100%; }

.nav-cta {
  padding:8px 20px;
  border-radius:999px;
  color:#fff!important;
  font-weight:600;
  background:var(--teal);
  box-shadow:0 10px 22px -14px var(--teal);
}
.nav-cta::after{ display:none; }
.nav-cta:hover{
  background:var(--terracotta);
  transform:translateY(-1px);
}

.menu-toggle {
  display:none;
  align-items:center;
  justify-content:center;
  width:40px; height:40px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--paper-3);
  color:var(--ink);
  font-size:1.1rem;
  cursor:pointer;
}

/* ============ HERO ============ */
.hero {
  min-height:70vh;
  display:flex;
  align-items:center;
  padding:132px 0 72px;
  position:relative;
  overflow:hidden;
}

.hero::before{
  content:"";
  position:absolute;
  right:-140px; top:96px;
  width:440px; height:440px;
  border-radius:50%;
  background:radial-gradient(circle at 30% 30%, rgba(242,183,5,.34), rgba(242,183,5,0) 68%);
  filter:blur(6px);
  pointer-events:none;
}

.hero::after{
  content:"";
  position:absolute;
  left:-60px; bottom:40px;
  width:220px; height:220px;
  border:2px dashed var(--line);
  border-radius:26px;
  transform:rotate(12deg);
  pointer-events:none;
}

.hero > .container{ position:relative; z-index:1; width:100%; }

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

.hero-eyebrow {
  display:inline-block;
  font-size:.85rem;
  font-weight:700;
  padding:4px 14px;
  border-radius:999px;
  margin-bottom:16px;
  color:var(--terracotta);
  background:var(--terracotta-soft);
  border:1px solid rgba(228,87,46,.28);
  letter-spacing:.14em;
}

.hero h1 {
  font-size:2.8rem;
  line-height:1.18;
  margin-bottom:20px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink);
}
.hero h1 em{
  font-style:normal;
  color:var(--terracotta);
  background:linear-gradient(180deg, transparent 62%, rgba(242,183,5,.55) 62%);
  padding:0 .08em;
}

.hero p {
  font-size:1.1rem;
  opacity:.72;
  max-width:560px;
  margin-bottom:32px;
  color:var(--ink-soft);
}

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

.hero-image {
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-l);
  background:var(--paper-3);
}
.hero-image img { width:100%; height:auto; display:block; }

/* ============ 按钮 ============ */
.btn {
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 28px;
  border-radius:999px;
  font-weight:600;
  cursor:pointer;
  border:none;
  text-decoration:none;
  font-size:.95rem;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease);
  position:relative;
}

.btn-primary {
  color:#fff;
  background:linear-gradient(135deg, var(--teal), #16727a);
  box-shadow:0 16px 30px -18px var(--teal);
}
.btn-primary:hover{
  transform:translateY(-2px);
  background:linear-gradient(135deg, var(--terracotta), #f2703f);
  box-shadow:0 20px 34px -18px var(--terracotta);
}

.btn-outline {
  background:transparent;
  border:1.5px solid var(--ink);
  color:var(--ink);
}
.btn-outline:hover{
  background:var(--ink);
  color:var(--paper);
  transform:translateY(-2px);
}

/* ============ 标题 / 标签 ============ */
.section-label {
  display:inline-block;
  font-size:.8rem;
  font-weight:700;
  letter-spacing:2px;
  margin-bottom:12px;
  color:var(--teal);
  text-transform:uppercase;
}
.section-label::before{
  content:"";
  display:inline-block;
  width:22px; height:2px;
  background:var(--terracotta);
  vertical-align:middle;
  margin-right:10px;
}

.section-title {
  font-size:2rem;
  margin-bottom:14px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.25;
}

.section-desc {
  max-width:600px;
  opacity:.72;
  margin-bottom:40px;
  color:var(--ink-soft);
}

/* ============ 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-lg);
  padding:28px;
  border:1px solid var(--line);
  background:var(--paper-3);
  transition:transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
  position:relative;
  overflow:hidden;
}

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

.category-card:hover {
  transform:translateY(-3px);
  box-shadow:var(--shadow-m);
  border-color:rgba(228,87,46,.4);
}
.category-card:hover::before{ transform:scaleX(1); }

.card-icon {
  width:48px; height:48px;
  border-radius: 40% 60% 55% 45% / 50% 45% 55% 50%;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:16px;
  font-size:1.3rem;
  color:var(--teal);
  background:var(--teal-soft);
  transition:border-radius .5s var(--ease), background .3s var(--ease);
}
.category-card:hover .card-icon{
  border-radius:50%;
  background:var(--terracotta-soft);
  color:var(--terracotta);
}

.card-link {
  font-weight:700;
  font-size:.85rem;
  text-decoration:none;
  color:var(--terracotta);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.card-link::after{
  content:"→";
  transition:transform .3s var(--ease);
}
.card-link:hover::after{ transform:translateX(5px); }

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

.feature-image {
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-m);
  background:var(--paper-3);
  position:relative;
}
.feature-image::after{
  content:"";
  position:absolute;
  inset:auto -14px -14px auto;
  width:88px; height:88px;
  border-radius:22px;
  background:var(--mustard);
  opacity:.28;
  z-index:-1;
}
.feature-image img { width:100%; height:auto; display:block; }

.feature-text { }
.feature-text h3{
  font-size:1.5rem;
  font-weight:800;
  margin-bottom:12px;
  letter-spacing:-.01em;
}

.feature-list { list-style:none; margin-top:18px; }

.feature-list li {
  padding:6px 0;
  display:flex;
  align-items:flex-start;
  gap:8px;
  color:var(--ink-soft);
  border-bottom:1px dashed var(--line);
}
.feature-list li:last-child{ border-bottom:none; }

.feature-list li::before {
  content:'✓';
  font-weight:700;
  color:var(--terracotta);
  flex:0 0 auto;
}

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

.stat-item {
  padding:24px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(180deg, var(--paper-3), var(--paper));
  transition:transform .3s var(--ease), box-shadow .3s var(--ease);
}
.stat-item:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-m);
}

.stat-number {
  font-size:2.2rem;
  font-weight:800;
  color:var(--teal);
  letter-spacing:-.03em;
  line-height:1.1;
}
.stat-item:nth-child(2n) .stat-number{ color:var(--terracotta); }

.stat-label {
  font-size:.9rem;
  opacity:.62;
  margin-top:6px;
}

/* ============ 内容墙 ============ */
.content-wall {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:24px;
}

.content-wall-item {
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--paper-3);
  transition:transform .3s var(--ease), box-shadow .3s var(--ease);
}
.content-wall-item:hover {
  transform:translateY(-3px);
  box-shadow:var(--shadow-m);
}

.content-wall-item img {
  width:100%;
  height:200px;
  object-fit:cover;
  display:block;
  filter:saturate(1.05);
  transition:transform .6s var(--ease);
}
.content-wall-item:hover img{ transform:scale(1.05); }

.content-wall-body { padding:20px; }
.content-wall-body h4{
  font-size:1.05rem;
  font-weight:700;
  margin-bottom:8px;
}
.content-wall-body p{
  font-size:.9rem;
  color:var(--ink-soft);
  opacity:.8;
}

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

.faq-item {
  border:1px solid var(--line);
  border-radius:var(--radius);
  margin-bottom:8px;
  overflow:hidden;
  cursor:pointer;
  background:var(--paper-3);
  transition:border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.faq-item:hover{ border-color:rgba(15,82,87,.45); }
.faq-item.open{
  border-color:var(--teal);
  box-shadow:var(--shadow-s);
}

.faq-item .faq-question {
  padding:16px 20px;
  font-weight:600;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
}
.faq-item .faq-question::after{
  content:"+";
  font-weight:700;
  color:var(--terracotta);
  font-size:1.2rem;
  transition:transform .3s var(--ease);
}
.faq-item.open .faq-question::after{ transform:rotate(45deg); }

.faq-item .faq-answer {
  padding:0 20px 16px;
  display:none;
  opacity:.72;
  color:var(--ink-soft);
}
.faq-item.open .faq-answer { display:block; }

/* ============ CTA 横幅 ============ */
.cta-banner {
  padding:56px 24px;
  text-align:center;
  border-radius:var(--radius-lg);
  color:#fff;
  background:
    radial-gradient(600px 260px at 12% 0%, rgba(242,183,5,.35), rgba(242,183,5,0) 60%),
    linear-gradient(135deg, var(--teal), #0a3b40 70%, #1b6b63);
  box-shadow:var(--shadow-l);
  position:relative;
  overflow:hidden;
}
.cta-banner::before{
  content:"";
  position:absolute;
  inset:12px;
  border:1px dashed rgba(255,255,255,.28);
  border-radius:calc(var(--radius-lg) - 8px);
  pointer-events:none;
}
.cta-banner h2 { color:#fff; font-size:1.9rem; font-weight:800; letter-spacing:-.02em; margin-bottom:12px; }
.cta-banner p{ color:rgba(255,255,255,.82); margin-bottom:24px; }

.cta-banner .btn-primary {
  background:#fff;
  color:var(--teal);
  box-shadow:0 18px 34px -20px rgba(0,0,0,.6);
}
.cta-banner .btn-primary:hover{
  background:var(--mustard);
  color:var(--ink);
}

/* ============ 页脚 ============ */
.site-footer {
  padding:56px 0 28px;
  background:var(--paper-2);
  border-top:1px solid var(--line);
  color:var(--ink);
}
.site-footer .container { }
.site-footer a{ color:var(--ink-soft); text-decoration:none; transition:color .2s var(--ease); }
.site-footer a:hover{ color:var(--terracotta); }

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

.footer-brand { }
.footer-brand .logo{ margin-bottom:14px; }
.footer-brand p{ color:var(--ink-soft); font-size:.9rem; max-width:320px; opacity:.85; }

.footer-col { }
.footer-col h4{
  font-size:.95rem;
  font-weight:700;
  margin-bottom:14px;
  letter-spacing:.04em;
}
.footer-col ul{ list-style:none; }
.footer-col li{ padding:4px 0; font-size:.9rem; }

.footer-bottom {
  border-top:1px solid var(--line);
  margin-top:40px;
  padding-top:20px;
  text-align:center;
  font-size:.85rem;
  color:var(--ink-soft);
  opacity:.8;
}

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

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

.seo-description {
  max-width:600px;
  margin:0 auto 48px;
  opacity:.72;
  color:var(--ink-soft);
  text-align:center;
}

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

/* ============ 响应式 ============ */
@media (max-width: 768px) {
  .section{ padding:60px 0; }
  .hero{ padding-top:112px; }
  .hero h1{ font-size:2.1rem; }
  .hero::after{ display:none; }
  .feature-block { grid-template-columns:1fr; gap:32px; }
  .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;
    position:absolute;
    top:68px; left:0;
    width:100%;
    background:var(--paper);
    padding:20px 24px 26px;
    gap:16px;
    border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-m);
  }
  .main-nav.open .nav-cta{ width:100%; justify-content:center; text-align:center; }
}

@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; align-items:stretch; }
  .hero-buttons .btn{ justify-content:center; }
  .hero h1{ font-size:1.8rem; }
  .section-title{ font-size:1.6rem; }
  .cta-banner{ padding:40px 20px; }
}

@media (prefers-reduced-motion: reduce){
  *{ transition:none!important; animation:none!important; }
}