:root {
  --blue: #2f9be6;
  --blue-deep: #1d7ec0;
  --orange: #ff8c1a;
  --green: #9ccc3c;
  --ink: #2c3640;
  --ink-soft: #5d6b78;
  --ink-faint: #8493a1;
  --bg: #ffffff;
  --bg-alt: #f5f9fc;
  --line: #e3ecf3;
  --radius: 18px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg) url('assets/bg-texture.webp') center / cover fixed no-repeat;
  line-height: 1.7;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* 导航 */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 32px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { width: 34px; height: 34px; border-radius: 8px; }
.brand-name { font-size: 17px; font-weight: 700; letter-spacing: .5px; }
.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a { font-size: 15px; color: var(--ink-soft); transition: color .2s; }
.nav-links a:hover { color: var(--blue); }
.nav-cta {
  padding: 8px 20px; font-size: 14px; font-weight: 600; color: #fff;
  background: var(--blue); border-radius: 999px; transition: background .2s;
}
.nav-cta:hover { background: var(--blue-deep); }

/* 首屏 */
.hero { padding: 72px 0 40px; }
.hero-inner { display: grid; grid-template-columns: 5fr 6fr; gap: 48px; align-items: center; }
.hero-kicker { color: var(--blue); font-size: 14px; font-weight: 700; letter-spacing: 2px; margin-bottom: 18px; }
.hero h1 { font-size: 52px; line-height: 1.25; letter-spacing: 1px; }
.hero-slogan { margin-top: 10px; color: var(--orange); font-size: 18px; font-weight: 600; font-style: italic; }
.hero-desc { margin-top: 16px; color: var(--ink-soft); font-size: 16px; max-width: 420px; }
.hero-actions { margin-top: 32px; display: flex; gap: 14px; }
.btn { padding: 13px 30px; border-radius: 999px; font-size: 15px; font-weight: 600; transition: all .2s; }
.btn-primary { color: #fff; background: var(--blue); box-shadow: 0 6px 18px rgba(47, 155, 230, .35); }
.btn-primary:hover { background: var(--blue-deep); transform: translateY(-2px); }
.btn-ghost { color: var(--blue); border: 1.5px solid var(--blue); }
.btn-ghost:hover { background: #eaf6ff; }
.hero-art img { filter: drop-shadow(0 20px 40px rgba(47, 155, 230, .12)); }

/* 通用区块 */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); border-radius: 32px; }
.section-title { font-size: 34px; text-align: center; letter-spacing: 1px; }
.section-sub { margin-top: 10px; text-align: center; color: var(--ink-faint); font-size: 15px; }

/* 服务卡片 */
.card-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; text-align: center; transition: all .25s;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(47, 155, 230, .12); border-color: transparent; }
.card img { width: 72%; margin: 0 auto 8px; }
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--ink-soft); font-size: 14.5px; }

/* 流程 */
.flow-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; list-style: none; counter-reset: step; }
.flow-step {
  position: relative; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px 22px 26px; transition: all .25s;
}
.flow-step:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(47, 155, 230, .10); }
.flow-step img { width: 64px; height: 64px; object-fit: contain; margin-bottom: 14px; }
.flow-no {
  position: absolute; top: 18px; right: 20px;
  font-size: 26px; font-weight: 800; color: #e8f2fa;
}
.flow-step h3 { font-size: 17px; margin-bottom: 8px; }
.flow-step p { color: var(--ink-soft); font-size: 13.5px; }

/* 线路 */
.line-grid { margin-top: 48px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.line-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 20px; text-align: center; transition: all .25s;
}
.line-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(47, 155, 230, .10); }
.line-card img { height: 110px; object-fit: contain; margin: 0 auto 16px; }
.line-card h3 { font-size: 17px; margin-bottom: 6px; }
.line-card p { color: var(--ink-soft); font-size: 13.5px; }

.feature-strip {
  margin-top: 40px; display: flex; justify-content: center; gap: 56px; flex-wrap: wrap;
}
.feature { display: flex; align-items: center; gap: 10px; color: var(--ink-soft); font-size: 15px; font-weight: 600; }
.feature img { width: 34px; height: 34px; object-fit: contain; }

/* 深色横幅 */
.banner {
  background-color: #0d2b45; background-size: cover; background-position: center;
  padding: 96px 0; text-align: center; color: #fff;
}
.banner-logo { width: 96px; margin: 0 auto 24px; }
.banner h2 { font-size: 32px; letter-spacing: 1px; }
.banner p { margin-top: 14px; color: rgba(255, 255, 255, .82); font-size: 16px; }
.banner strong { color: #fff; }
.banner-tags { margin-top: 28px; display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.banner-tags span {
  padding: 7px 18px; font-size: 13px; border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 999px; color: rgba(255, 255, 255, .9);
}

/* 关于我们 */
.about-body { max-width: 860px; margin: 40px auto 0; }
.about-body p { margin-top: 16px; color: var(--ink-soft); font-size: 15px; text-align: justify; }
.about-slogan { color: var(--orange) !important; font-weight: 600; font-style: italic; text-align: center !important; }
.contact-card {
  max-width: 860px; margin: 40px auto 0; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 32px; display: grid; gap: 14px;
}
.contact-item { display: flex; gap: 18px; align-items: baseline; }
.contact-label { flex: none; font-size: 14px; font-weight: 700; color: var(--ink); }
.contact-value { color: var(--ink-soft); font-size: 14.5px; }
.contact-value a { color: var(--blue); }

/* 页脚 */
.footer { border-top: 1px solid var(--line); padding: 28px 0; background: #fff; }
.footer-inner { display: flex; justify-content: center; align-items: center; gap: 24px; flex-wrap: wrap; }
.footer p, .footer a { color: #98a4ae; font-size: 13px; }
.footer a:hover { color: var(--blue); }

/* 响应式 */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero h1 { font-size: 38px; }
  .card-grid, .flow-grid, .line-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
}
@media (max-width: 560px) {
  .card-grid, .flow-grid, .line-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .banner h2 { font-size: 26px; }
}