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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: #FAF7F2;
  color: #1B3A4B;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection { background:#FF6F59; color:#fff; }

::-webkit-scrollbar { width:8px; }
::-webkit-scrollbar-track { background:#F0F3F4; }
::-webkit-scrollbar-thumb { background:#C8D8DE; border-radius:4px; }

.container { max-width:1200px; margin:0 auto; padding:0 24px; }

/* ===== SECTION交替 ===== */
.section { padding:80px 0; position:relative; }

.section:nth-child(even) {
  background:#EDF5F8;
}

/* 用之后的规则覆盖默认#f8f9fa */
.section:nth-child(even) { background:#EDF5F8; }

/* ===== NAVIGATION ===== */
.site-header {
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  background:rgba(250,247,242,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(27,58,75,0.08);
  transition:box-shadow .3s;
}

.site-header:hover { box-shadow:0 2px 24px rgba(27,58,75,0.04); }

.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:1.25rem; text-decoration:none; color:#1B3A4B;
  letter-spacing:-0.02em;
}

.logo-icon {
  width:38px; height:38px; border-radius:50%;
  background:linear-gradient(135deg,#FF6F59,#FF9770);
  color:#fff; display:flex; align-items:center; justify-content:center;
  font-size:1rem; font-weight:800;
  box-shadow:0 3px 8px rgba(255,111,89,0.35);
}

.main-nav {
  display:flex; align-items:center; gap:28px; list-style:none;
}

.main-nav a {
  text-decoration:none; font-size:0.9rem; font-weight:500;
  color:#1B3A4B; opacity:0.7; transition:all .2s;
  position:relative;
}

.main-nav a::after {
  content:''; position:absolute; left:0; bottom:-4px;
  width:0; height:2px; border-radius:2px;
  background:#FF6F59; transition:width .3s ease;
}

.main-nav a:hover { opacity:1; color:#FF6F59; }
.main-nav a:hover::after { width:100%; }

.nav-cta {
  padding:8px 20px; border-radius:50px; color:#fff !important;
  font-weight:600; background:linear-gradient(135deg,#FF6F59,#FF9770);
  box-shadow:0 2px 8px rgba(255,111,89,0.3);
  opacity:1 !important;
}

.nav-cta::after { display:none; }
.nav-cta:hover { transform:translateY(-1px); box-shadow:0 4px 16px rgba(255,111,89,0.4); }

.menu-toggle { display:none; }

/* ===== HERO ===== */
.hero {
  min-height:85vh; display:flex; align-items:center;
  padding:120px 0 80px; position:relative; overflow:hidden;
  background:linear-gradient(180deg,#FDF9F4 0%,#F2F8FA 100%);
}

.hero::before {
  content:''; position:absolute; top:50%; right:-140px;
  transform:translateY(-50%);
  width:480px; height:480px; border-radius:50%;
  background:radial-gradient(circle,rgba(230,240,244,0.9),rgba(230,240,244,0.2));
  z-index:0;
}

.hero::after {
  content:''; position:absolute; top:18%; right:18%;
  width:100px; height:100px; border-radius:50%;
  border:2px solid rgba(255,111,89,0.2);
  z-index:0;
}

.hero-content {
  max-width:640px; position:relative; z-index:1;
}

.hero-eyebrow {
  display:inline-block; font-size:0.85rem; font-weight:700;
  padding:6px 18px; border-radius:50px;
  background:rgba(255,111,89,0.12); color:#FF6F59;
  margin-bottom:20px; letter-spacing:1px;
  text-transform:uppercase;
}

.hero h1 {
  font-size:3.4rem; line-height:1.1; margin-bottom:20px;
  font-weight:800; letter-spacing:-0.03em;
  color:#1B3A4B;
}

.hero h1 .text-accent {
  display:inline-block;
  background:linear-gradient(135deg,#FF6F59,#FFB199);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  position:relative;
}

.hero p {
  font-size:1.15rem; opacity:0.72; max-width:520px; margin-bottom:36px;
  line-height:1.7;
}

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

.hero-image {
  position:relative; z-index:1;
  border-radius:32px;
  overflow:hidden;
  border:8px solid #fff;
  box-shadow:0 24px 48px rgba(27,58,75,0.12);
  transform:rotate(2deg);
  transition:transform .4s ease;
}

.hero-image:hover { transform:rotate(0deg) scale(1.02); }

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

/* ===== BUTTONS ===== */
.btn {
  display:inline-flex; align-items:center; gap:8px;
  padding:14px 32px; border-radius:50px;
  font-weight:600; cursor:pointer; border:none;
  text-decoration:none; transition:all .3s ease;
  font-size:0.95rem;
}

.btn-primary {
  background:linear-gradient(135deg,#FF6F59,#FF9770);
  color:#fff;
  box-shadow:0 4px 14px rgba(255,111,89,0.35);
}

.btn-primary:hover {
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(255,111,89,0.45);
}

.btn-outline {
  background:transparent; border:1.5px solid #B8D0DA;
  color:#1B3A4B;
}

.btn-outline:hover {
  border-color:#FF6F59; color:#FF6F59;
  transform:translateY(-2px);
}

/* ===== SECTION LABEL / TITLE ===== */
.section-label {
  display:inline-block; font-size:0.8rem; font-weight:700;
  letter-spacing:3px; margin-bottom:14px;
  color:#FF6F59; text-transform:uppercase;
  padding-left:32px; position:relative;
}

.section-label::before {
  content:''; position:absolute; left:0; top:50%;
  transform:translateY(-50%);
  width:22px; height:6px;
  border-radius:6px;
  background:linear-gradient(90deg,#FF6F59,#FFB199);
}

.section-title {
  font-size:2.4rem; font-weight:800; margin-bottom:14px;
  letter-spacing:-0.02em; line-height:1.2;
  color:#1B3A4B;
}

.section-title::after {
  content:''; display:block;
  width:90px; height:4px; margin-top:16px;
  border-radius:4px;
  background:repeating-linear-gradient(90deg,#FF6F59 0 18px,#FFD0C2 18px 30px);
}

.section-desc {
  max-width:620px; opacity:0.7; margin-bottom:44px;
  font-size:1.05rem; line-height:1.7;
}

/* ===== CARDS GRID ===== */
.cards-grid {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:28px;
}

.category-card {
  border-radius:20px; padding:32px 28px;
  background:#fff;
  border:1px solid rgba(27,58,75,0.06);
  transition:all .35s ease;
  position:relative;
  overflow:hidden;
}

.category-card::before {
  content:''; position:absolute; top:0; left:0;
  width:100%; height:4px;
  background:linear-gradient(90deg,#FF6F59,#FFB199);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .4s ease;
}

.category-card:hover {
  transform:translateY(-6px);
  box-shadow:0 12px 32px rgba(27,58,75,0.08);
  border-color:rgba(255,111,89,0.2);
}

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

.card-icon {
  width:54px; height:54px; border-radius:18px;
  display:flex; align-items:center; justify-content:center;
  margin-bottom:20px; font-size:1.4rem;
  background:linear-gradient(135deg,#E8F4F7,#D0E8EF);
  color:#2A7A8C;
}

.card-link {
  font-weight:700; font-size:0.85rem; text-decoration:none;
  color:#FF6F59; display:inline-flex; align-items:center; gap:6px;
  margin-top:14px; transition:gap .3s;
}

.card-link:hover { gap:12px; }

/* ===== FEATURE BLOCK ===== */
.feature-block {
  display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center;
}

.feature-image {
  border-radius:28px; overflow:hidden;
  position:relative;
  border:8px solid #fff;
  box-shadow:0 20px 40px rgba(27,58,75,0.1);
}

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

.feature-list { list-style:none; margin-top:10px; }

.feature-list li {
  padding:10px 0; display:flex; align-items:center; gap:12px;
  font-size:1.05rem; color:#1B3A4B; opacity:0.8;
}

.feature-list li::before {
  content:'✓';
  width:22px; height:22px; border-radius:50%;
  background:#5BAE93; color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-size:0.7rem; flex-shrink:0;
}

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

.stat-item {
  padding:32px 20px; border-radius:20px;
  background:#fff;
  border:1px solid rgba(27,58,75,0.06);
  transition:transform .3s;
}

.stat-item:hover { transform:translateY(-4px); box-shadow:0 10px 24px rgba(27,58,75,0.08); }

.stat-number {
  font-size:2.6rem; font-weight:800;
  color:#FF6F59; letter-spacing:-0.02em;
  line-height:1.2;
}

.stat-label { font-size:0.95rem; opacity:0.6; margin-top:8px; }

/* ===== CONTENT WALL ===== */
.content-wall {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px;
}

.content-wall-item {
  border-radius:20px; overflow:hidden;
  background:#fff; border:1px solid rgba(27,58,75,0.06);
  transition:all .35s ease;
}

.content-wall-item:hover {
  transform:translateY(-6px);
  box-shadow:0 16px 36px rgba(27,58,75,0.1);
}

.content-wall-item img {
  width:100%; height:200px; object-fit:cover;
  transition:transform .5s ease;
}

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

.content-wall-body { padding:22px 24px 24px; }

.content-wall-body h3 { font-size:1.05rem; margin-bottom:8px; color:#1B3A4B; font-weight:700; }
.content-wall-body p { font-size:0.88rem; opacity:0.6; line-height:1.5; }

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

.faq-item {
  border:1px solid rgba(27,58,75,0.08);
  border-radius:16px;
  margin-bottom:12px;
  overflow:hidden;
  cursor:pointer;
  background:#fff;
  transition:border-color .3s, box-shadow .3s;
}

.faq-item:hover { border-color:rgba(255,111,89,0.3); }

.faq-item .faq-question {
  padding:20px 24px; font-weight:600; font-size:1rem;
  display:flex; justify-content:space-between; align-items:center;
  color:#1B3A4B;
}

.faq-item .faq-question::after {
  content:'+'; font-size:1.4rem; color:#FF6F59;
  font-weight:300; transition:transform .3s;
}

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

.faq-item .faq-answer {
  padding:0 24px 20px; display:none;
  opacity:0.75; line-height:1.7; font-size:0.94rem;
  border-top:1px dashed rgba(27,58,75,0.08);
  padding-top:14px;
}

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

/* ===== CTA BANNER ===== */
.cta-banner {
  padding:64px 40px; text-align:center;
  border-radius:24px;
  background:linear-gradient(135deg,#FF6F59,#FF9770);
  position:relative;
  overflow:hidden;
  box-shadow:0 20px 44px rgba(255,111,89,0.35);
}

.cta-banner::before,
.cta-banner::after {
  content:''; position:absolute; border-radius:50%;
  background:rgba(255,255,255,0.1);
}

.cta-banner::before { width:200px; height:200px; top:-60px; right:-40px; }
.cta-banner::after { width:120px; height:120px; bottom:-30px; left:10%; }

.cta-banner h2 {
  color:#fff; font-size:2.4rem; font-weight:800;
  margin-bottom:16px; position:relative; z-index:1;
  letter-spacing:-0.02em;
}

.cta-banner p { color:rgba(255,255,255,0.9); position:relative; z-index:1; margin-bottom:28px; }

.cta-banner .btn-primary {
  background:#fff; color:#FF6F59;
  box-shadow:0 8px 20px rgba(27,58,75,0.15);
  position:relative; z-index:1;
  font-weight:700;
}

.cta-banner .btn-primary:hover { transform:translateY(-2px); box-shadow:0 12px 28px rgba(0,0,0,0.18); }

/* ===== FOOTER ===== */
.site-footer {
  padding:64px 0 28px;
  background:#E8EDF0;
  border-top:1px solid rgba(27,58,75,0.06);
}

.site-footer .container { }

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

.footer-brand { }

.footer-brand .logo { margin-bottom:12px; }

.footer-brand p { font-size:0.9rem; opacity:0.6; line-height:1.6; max-width:240px; }

.footer-col h3 {
  font-size:0.9rem; font-weight:700; margin-bottom:16px;
  color:#1B3A4B; letter-spacing:1px;
}

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

.footer-col a {
  display:block; text-decoration:none;
  font-size:0.88rem; opacity:0.6; padding:5px 0;
  transition:all .2s;
  color:#1B3A4B;
}

.footer-col a:hover { opacity:1; color:#FF6F59; padding-left:6px; }

.footer-bottom {
  border-top:1px solid rgba(27,58,75,0.08);
  margin-top:44px; padding-top:22px;
  text-align:center; font-size:0.82rem;
  opacity:0.55; color:#1B3A4B;
}

/* ===== UTILITIES ===== */
.text-accent { color:#FF6F59; font-weight:700; }

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

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

.seo-description {
  max-width:640px; margin:0 auto 48px;
  opacity:0.7; text-align:center;
  font-size:1.05rem; line-height:1.7;
}

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

/* 标题下的波浪装饰（额外创意） */
.section-title.text-accent-line::after {
  background:repeating-linear-gradient(90deg,#5BAE93 0 16px,#C9E3D8 16px 26px);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 980px) {
  .hero h1 { font-size:2.6rem; }
  .section-title { font-size:2rem; }
  .feature-block { gap:36px; }
}

@media (max-width: 768px) {
  .hero {
    padding-top:110px;
    flex-direction:column;
    text-align:center;
  }

  .hero-content { max-width:100%; margin-bottom:40px; }

  .hero p { margin-left:auto; margin-right:auto; }

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

  .hero-image { transform:none; max-width:420px; margin:0 auto; }

  .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;
    width:44px; height:44px;
    background:none; border:1px solid rgba(27,58,75,0.15);
    border-radius:12px;
    align-items:center; justify-content:center;
    cursor:pointer; color:#1B3A4B; font-size:1.2rem;
    background:rgba(255,255,255,0.5);
  }

  .main-nav.open {
    display:flex; flex-direction:column;
    position:absolute; top:68px; left:0;
    width:100%; max-height:calc(100vh - 68px);
    background:rgba(250,247,242,0.97);
    backdrop-filter:blur(10px);
    padding:24px; gap:18px;
    box-shadow:0 16px 32px rgba(27,58,75,0.12);
  }

  .main-nav.open a { font-size:1.05rem; padding:8px 0; }
  .main-nav.open .nav-cta { text-align:center; padding:14px 0; }

  .cta-banner { padding:48px 24px; }
  .cta-banner h2 { font-size:1.8rem; }
}

@media (max-width: 480px) {
  .section { padding:56px 0; }

  .hero h1 { font-size:2rem; }

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

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

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

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

  .btn { justify-content:center; }

  .section-title { font-size:1.7rem; }

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

  .cta-banner h2 { font-size:1.5rem; }
}

/* 性能与细节 */
@media (prefers-reduced-motion: reduce) {
  * { transition:none !important; animation:none !important; }
}