:root {
  --green: #1fa463;
  --green-dark: #168652;
  --green-light: #e8f8ef;
  --ink: #222;
  --muted: #666;
  --line: #e5e5e5;
  --white: #fff;
  --gray-bg: #f7f7f7;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--ink);
  line-height: 1.7;
  background: var(--white);
}

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

.container {
  width: min(1140px, calc(100% - 32px));
  margin: 0 auto;
}

/* 顶部信息栏 */
.topbar {
  background: var(--green-dark);
  color: var(--white);
  font-size: 0.88rem;
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 10px 0;
  flex-wrap: wrap;
}

.topbar a { opacity: 0.95; }
.topbar a:hover { opacity: 0.75; }

/* 导航 */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--green-dark);
  white-space: nowrap;
}

.logo span { color: var(--ink); font-weight: 500; }

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav a {
  font-size: 0.95rem;
  color: var(--ink);
  transition: color 0.2s;
}

.nav a:hover { color: var(--green); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--green);
  color: var(--white) !important;
  font-weight: 600;
}

.nav-cta:hover { background: var(--green-dark); }

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

/* 首屏 */
.hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(22, 134, 82, 0.92), rgba(31, 164, 99, 0.88)),
    url("/assets/hero-bg.svg?v=2026082401") center/cover no-repeat;
  color: var(--white);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
  min-height: 520px;
  padding: 72px 0;
}

.hero-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-size: 0.88rem;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.25;
  margin-bottom: 18px;
}

.hero p {
  font-size: 1.05rem;
  opacity: 0.95;
  max-width: 34em;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  transition: 0.2s;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--white);
  color: var(--green-dark);
}

.btn-primary:hover { opacity: 0.9; }

.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.7);
  color: var(--white);
  background: transparent;
}

.btn-outline:hover { background: rgba(255, 255, 255, 0.12); }

.hero-card {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 20px;
  padding: 24px;
  backdrop-filter: blur(6px);
}

.hero-card h3 {
  font-size: 1.1rem;
  margin-bottom: 14px;
}

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

.hero-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
}

.hero-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--white);
  flex-shrink: 0;
}

/* 通用区块 */
.section {
  padding: 72px 0;
}

.section-gray { background: var(--gray-bg); }

.section-green { background: var(--green-light); }

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 42px;
}

.section-head .tag {
  display: inline-block;
  color: var(--green);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 12px;
}

.section-head p {
  color: var(--muted);
}

/* 服务卡片 */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card,
.feature-card,
.line-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover,
.feature-card:hover,
.line-card:hover {
  transform: translateY(-4px);
}

.icon-box {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--green-light);
  color: var(--green-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
}

.service-card h3,
.feature-card h3,
.line-card h3 {
  font-size: 1.12rem;
  margin-bottom: 10px;
}

.service-card p,
.feature-card p,
.line-card p {
  color: var(--muted);
  font-size: 0.95rem;
}

/* 关于 */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-panel {
  background: var(--white);
  border-radius: 20px;
  border: 1px solid var(--line);
  padding: 32px;
  box-shadow: var(--shadow);
}

.about-panel h2 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.about-panel p {
  color: var(--muted);
  margin-bottom: 14px;
}

.check-list {
  list-style: none;
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.check-list li {
  position: relative;
  padding-left: 24px;
  color: var(--ink);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 28px;
}

.stat-item {
  text-align: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px 16px;
}

.stat-item strong {
  display: block;
  font-size: 1.8rem;
  color: var(--green-dark);
  margin-bottom: 6px;
}

.stat-item span {
  color: var(--muted);
  font-size: 0.92rem;
}

/* 流程 */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step {
  text-align: center;
  padding: 24px 16px;
}

.step-num {
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.step h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.step p {
  color: var(--muted);
  font-size: 0.92rem;
}

/* 联系 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 22px;
  box-shadow: var(--shadow);
  transition: 0.2s;
}

.contact-card:hover {
  border-color: var(--green);
  transform: translateY(-2px);
}

.contact-card strong {
  display: block;
  margin-bottom: 4px;
}

.contact-card span {
  color: var(--muted);
  font-size: 0.92rem;
}

.contact-card em {
  font-style: normal;
  color: var(--green-dark);
  font-weight: 600;
  white-space: nowrap;
}

.cta-band {
  background: var(--green-dark);
  color: var(--white);
  text-align: center;
  padding: 56px 24px;
  border-radius: 20px;
}

.cta-band h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 12px;
}

.cta-band p {
  opacity: 0.92;
  margin-bottom: 22px;
}

/* FAQ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-list details {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  margin-bottom: 12px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
}

.faq-list p {
  margin-top: 10px;
  color: var(--muted);
}

/* 页脚 */
.footer {
  background: #1a1a1a;
  color: #ccc;
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 28px;
}

.footer h3,
.footer h4 {
  color: var(--white);
  margin-bottom: 14px;
}

.footer p,
.footer a {
  color: #aaa;
  font-size: 0.92rem;
}

.footer a:hover { color: var(--white); }

.footer-links {
  list-style: none;
  display: grid;
  gap: 8px;
}

.footer-bottom {
  border-top: 1px solid #333;
  padding-top: 18px;
  text-align: center;
  font-size: 0.88rem;
  color: #888;
}

.seo-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.seo-keywords span {
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.82rem;
}

@media (max-width: 960px) {
  .hero-inner,
  .about-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .stats,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .menu-toggle { display: block; }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    padding: 12px 16px 16px;
  }

  .nav.open { display: flex; }

  .nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }

  .nav a:last-child { border-bottom: 0; }

  .header { position: relative; }

  .hero-inner {
    min-height: auto;
    padding: 48px 0;
  }

  .section { padding: 52px 0; }

  .grid-3,
  .stats,
  .steps {
    grid-template-columns: 1fr;
  }

  .contact-card {
    flex-direction: column;
    align-items: flex-start;
  }
}