:root {
  --bg: #f6f4ef;
  --card: #ffffff;
  --text: #1f2a1f;
  --muted: #5f6e5f;
  --line: #dde5d8;
  --primary: #3f6b4f;
  --primary-strong: #254231;
  --accent: #e6f0e6;
  --accent-soft: #eef5ec;
  --shadow: 0 20px 50px rgba(31, 42, 31, 0.08);
  --radius: 24px;
  --container: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(63, 107, 79, 0.08), transparent 24%),
    linear-gradient(180deg, #f8f7f3 0%, #f5f2ea 100%);
  line-height: 1.72;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(820px, calc(100% - 32px)); }
.site-header {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(248, 247, 243, 0.82);
  border-bottom: 1px solid rgba(221,229,216,.8);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 78px; gap: 16px; }
.brand-wrap { display: flex; align-items: center; gap: 14px; }
.logo-placeholder {
  width: 60px; height: 60px; border-radius: 18px; border: 1.5px dashed rgba(63,107,79,.45);
  display: grid; place-items: center; font-size: 12px; color: var(--primary); background: rgba(255,255,255,.68);
}
.logo-placeholder.small { width: 50px; height: 50px; border-radius: 14px; }
.logo-img { width: 60px; height: 60px; object-fit: contain; display: block; }
.logo-img.small { width: 50px; height: 50px; }
.qr-img { width: 116px; height: 116px; border-radius: 8px; background: #fff; padding: 7px; box-sizing: border-box; display: block; object-fit: contain; }
.brand-copy h1 { margin: 0; font-size: 19px; }
.brand-copy p { margin: 3px 0 0; font-size: 12px; color: var(--muted); }
.nav-toggle { display: none; border: 0; background: var(--card); padding: 10px 12px; border-radius: 12px; box-shadow: var(--shadow); }
.nav-menu { display: flex; align-items: center; gap: 8px; }
.nav-link { padding: 10px 14px; border-radius: 999px; color: var(--muted); font-size: 14px; }
.nav-link:hover, .nav-link.active { background: var(--card); color: var(--primary-strong); box-shadow: var(--shadow); }
.nav-cta { margin-left: 10px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 0 20px; border-radius: 999px; border: 1px solid transparent;
  font-weight: 600; transition: .25s ease; cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-strong)); color: #fff; box-shadow: var(--shadow); }
.btn-secondary { background: rgba(255,255,255,.7); border-color: var(--line); color: var(--primary-strong); }
.hero { padding: 72px 0 42px; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 28px; align-items: stretch; }
.eyebrow { display: inline-flex; padding: 8px 14px; border-radius: 999px; background: rgba(230,240,230,.9); color: var(--primary); font-size: 13px; margin-bottom: 18px; }
.hero h2 { font-size: clamp(28px, 3.8vw, 40px); line-height: 1.22; margin: 0 0 16px; letter-spacing: -0.01em; }
.hero p { font-size: 18px; color: #405040; margin: 0 0 28px; max-width: 720px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-panel {
  background: linear-gradient(180deg, rgba(255,255,255,.82), rgba(255,255,255,.64));
  border: 1px solid rgba(221,229,216,.9); border-radius: 32px; padding: 26px; box-shadow: var(--shadow);
  display: grid; gap: 18px; align-content: start;
}
.hero-panel .panel-tag { font-size: 13px; color: var(--primary); }
.hero-panel .panel-title { font-size: 22px; font-weight: 700; }
.hero-panel ul { margin: 0; padding-left: 18px; color: var(--muted); }
.dev-badge { display: inline-flex; align-self: start; padding: 10px 16px; border-radius: 999px; background: rgba(63,107,79,.12); color: var(--primary-strong); font-weight: 700; font-size: 14px; }
.section { padding: 32px 0 56px; }
.section.muted { background: rgba(255,255,255,.42); }
.section.accent { background: linear-gradient(180deg, rgba(230,240,230,.7), rgba(238,245,236,.3)); }
.section-head { margin-bottom: 26px; text-align: center; }
.section-head.left { text-align: left; }
.section-head h2 { margin: 0 0 10px; font-size: clamp(28px, 4vw, 40px); }
.section-head p, .section-note { color: var(--muted); margin: 0; }
.stats-grid, .card-grid, .steps-grid, .pricing-grid, .contact-grid { display: grid; gap: 18px; }
.stats-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.stat-card, .feature-card, .info-card, .testimonial-card, .step-card, .price-card, .contact-card, .dashboard-card, .mock-panel, .quote-card, .quote-panel, .bullet-panel, .calendar-placeholder, .cta-banner, .highlight-box, .comparison-table, .story-body {
  background: rgba(255,255,255,.84); border: 1px solid rgba(221,229,216,.95); border-radius: var(--radius); box-shadow: var(--shadow);
}
.stat-card { padding: 28px; text-align: center; }
.stat-card strong { display: block; font-size: 36px; margin-bottom: 6px; color: var(--primary-strong); }
.stat-card span { color: var(--muted); }
.card-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
.card-grid--three { grid-template-columns: repeat(3, minmax(0,1fr)); }
.feature-card, .info-card, .testimonial-card, .contact-card { padding: 24px; }
.feature-card h3, .info-card h3, .contact-card h3, .dashboard-card h3, .step-card h3, .price-card h3 { margin: 0 0 10px; font-size: 22px; }
.feature-card p, .info-card p, .testimonial-card p, .contact-card p, .dashboard-card p, .step-card p, .price-card p { margin: 0; color: var(--muted); }
.text-link { display: inline-flex; margin-top: 18px; color: var(--primary); font-weight: 700; }
.two-col { display: grid; grid-template-columns: .92fr 1.08fr; gap: 26px; align-items: start; }
.stack-list { display: grid; gap: 14px; }
.feature-row { display: grid; grid-template-columns: 60px 1fr; gap: 14px; padding: 20px; background: rgba(255,255,255,.75); border: 1px solid var(--line); border-radius: 22px; }
.feature-row span, .step-card span { color: var(--primary); font-weight: 800; }
.quote-card, .quote-panel { padding: 32px; }
.quote-card blockquote { margin: 12px 0 14px; font-size: 20px; line-height: 1.8; }
.quote-author { color: var(--muted); margin-bottom: 18px; }
.testimonials { grid-template-columns: repeat(3, minmax(0,1fr)); }
.testimonial-card span { display: block; margin-top: 14px; color: var(--primary); font-weight: 700; }
.cta-banner { padding: 34px; text-align: center; }
.cta-banner h2, .highlight-box h2, .quote-panel h2, .mock-panel h2 { margin-top: 0; }
.timeline { display: grid; gap: 16px; }
.timeline-item { display: grid; grid-template-columns: 110px 1fr; gap: 16px; padding: 22px; background: rgba(255,255,255,.78); border: 1px solid var(--line); border-radius: 24px; }
.timeline-item span { color: var(--primary-strong); font-weight: 800; }
.steps-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
.step-card { padding: 24px; }
.step-card span { display: inline-block; margin-bottom: 12px; }
.pricing-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.price-card { padding: 26px; }
.price-card strong { display: block; font-size: 34px; margin: 12px 0; }
.expert-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
.expert-card { padding: 28px; }
.expert-card h3 { margin: 0; }
.expert-card .role { display: block; color: var(--primary); font-weight: 700; margin: 8px 0 14px; }
.expert-card ul { margin: 14px 0 0; padding-left: 20px; color: var(--muted); }
.expert-card ul li { margin-bottom: 6px; }
.expert-card .expert-quote { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line); color: var(--text); font-style: italic; line-height: 1.7; }
.highlight-box { padding: 32px; display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 20px; }
.highlight-box ul { margin: 14px 0; padding-left: 20px; color: var(--muted); }
.comparison-table { overflow: hidden; }
.compare-row { display: grid; grid-template-columns: 1fr 1fr; }
.compare-row > div { padding: 18px 22px; border-bottom: 1px solid var(--line); }
.compare-row > div:first-child { background: rgba(230,240,230,.52); color: var(--text); font-weight: 600; }
.bullet-panel { padding: 28px; }
.bullet-panel ul { columns: 2; gap: 24px; margin: 0; padding-left: 20px; }
.calendar-placeholder { padding: 26px; }
.calendar-header { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 16px; }
.calendar-header button { border: 0; background: var(--primary); color: #fff; border-radius: 999px; padding: 12px 18px; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, minmax(0,1fr)); gap: 12px; margin-bottom: 14px; }
.day-slot { padding: 18px 8px; text-align: center; border-radius: 18px; background: var(--accent-soft); color: var(--primary-strong); font-weight: 700; }
.article-list { margin: 0; padding-left: 24px; display: grid; gap: 12px; }
.article-list a { color: var(--primary-strong); font-weight: 600; }
.story-body { padding: 30px; }
.story-body p + p { margin-top: 16px; }
.dashboard-layout { display: grid; grid-template-columns: 280px 1fr; gap: 20px; }
.dashboard-sidebar { background: rgba(255,255,255,.84); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; display: grid; gap: 10px; align-content: start; }
.dashboard-sidebar a { padding: 12px 14px; border-radius: 16px; color: var(--muted); background: rgba(246,244,239,.8); }
.dashboard-sidebar a:first-child { background: rgba(230,240,230,.8); color: var(--primary-strong); font-weight: 700; }
.dashboard-main { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.dashboard-card { padding: 22px; }
.mock-panel { padding: 30px; }
.site-footer { padding: 24px 0 38px; background: #1d281f; color: rgba(255,255,255,.9); margin-top: 30px; }
.footer-top { display: grid; grid-template-columns: 1.2fr 2fr; gap: 30px; padding: 24px 0; }
.footer-brand { display: flex; gap: 16px; align-items: flex-start; }
.footer-mission { margin: 0; max-width: 360px; }
.footer-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.footer-col h4 { margin: 0 0 14px; font-size: 16px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-col a { color: rgba(255,255,255,.72); }
.footer-bottom { padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12); display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-bottom p { margin: 0 0 8px; color: rgba(255,255,255,.72); }
.qr-code-wrap { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.qr-code-placeholder {
  width: 120px; height: 120px; border-radius: 16px;
  border: 2px dashed rgba(63,107,79,.4);
  background: rgba(255,255,255,.9);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; color: var(--muted); text-align: center;
}
.qr-code-label { font-size: 13px; color: var(--muted); }
.faq-list { display: grid; gap: 16px; }
.faq-item {
  background: rgba(255,255,255,.84); border: 1px solid rgba(221,229,216,.95);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px;
}
.faq-item h3 { margin: 0 0 10px; font-size: 18px; color: var(--primary-strong); }
.faq-item p { margin: 0; color: var(--muted); line-height: 1.8; }
.contact-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
@media (max-width: 1100px) {
  .card-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .steps-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .pricing-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .testimonials { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .card-grid--three { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .hero-grid, .two-col, .footer-top, .dashboard-layout { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .nav-menu {
    position: absolute; left: 16px; right: 16px; top: 82px; flex-direction: column; align-items: stretch; gap: 6px;
    background: rgba(248,247,243,.98); border: 1px solid var(--line); border-radius: 24px; padding: 14px; box-shadow: var(--shadow); display: none;
  }
  .nav-menu.open { display: flex; }
  .nav-cta { margin-left: 0; width: 100%; }
  .nav-cta .btn { width: 100%; }
  .stats-grid, .card-grid, .steps-grid, .pricing-grid, .testimonials, .dashboard-main, .expert-grid { grid-template-columns: 1fr; }
  .card-grid--three { grid-template-columns: 1fr; }
  .timeline-item, .compare-row { grid-template-columns: 1fr; }
  .bullet-panel ul { columns: 1; }
  .calendar-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .hero { padding-top: 50px; }
  .hero p { font-size: 16px; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 560px) {
  .container { width: min(var(--container), calc(100% - 20px)); }
  .brand-copy p { display: none; }
  .hero h2 { font-size: 26px; }
  .section { padding: 26px 0 42px; }
  .logo-placeholder { width: 52px; height: 52px; }
  .logo-img { width: 52px; height: 52px; }
  .footer-grid { grid-template-columns: 1fr; }
}
.contact-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 26px; align-items: start; }
.contact-info { display: grid; gap: 14px; }
.contact-info .info-card { padding: 22px; }
.contact-info .info-card h3 { margin: 0 0 6px; font-size: 17px; }
.contact-info .info-card p { margin: 0; color: var(--muted); }
.contact-form { background: rgba(255,255,255,.84); border: 1px solid rgba(221,229,216,.95); border-radius: var(--radius); box-shadow: var(--shadow); padding: 30px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { display: grid; gap: 8px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-weight: 600; color: var(--primary-strong); font-size: 14px; }
.form-field input, .form-field textarea, .form-field select { font: inherit; padding: 12px 14px; border: 1px solid var(--line); border-radius: 14px; background: #fff; color: var(--text); width: 100%; }
.form-field input:focus, .form-field textarea:focus, .form-field select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(63,107,79,.15); }
.form-field textarea { min-height: 130px; resize: vertical; }
.form-note { color: var(--muted); font-size: 13px; margin: 14px 0 0; }
@media (max-width: 820px) { .contact-layout, .form-grid { grid-template-columns: 1fr; } }