:root {
  --brand: #0f766e;
  --brand-600: #0d9488;
  --brand-700: #115e59;
  --brand-50: #f0fdfa;
  --ink: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --bg: #ffffff;
  --soft: #f8fafc;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --maxw: 1140px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-weight: 800; font-size: 18px; letter-spacing: .5px; display: flex; align-items: center; gap: 8px; }
.logo-mark {
  width: 36px; height: 36px; object-fit: contain; border-radius: 8px;
}
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 15px; color: var(--muted); }
.nav-links a:hover { color: var(--brand); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 10px; font-weight: 600; font-size: 15px;
  cursor: pointer; border: 1px solid transparent; transition: .2s;
}
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-700); }
.btn-ghost { background: transparent; color: var(--brand); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); background: var(--brand-50); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(13, 148, 136, .14), transparent),
    radial-gradient(900px 420px at 0% 10%, rgba(15, 118, 110, .10), transparent),
    var(--soft);
  padding: 92px 0 80px;
}
.hero-inner { max-width: 820px; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px;
  color: var(--brand); background: var(--brand-50);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(32px, 5vw, 54px); line-height: 1.18; font-weight: 800; letter-spacing: -1px; }
.hero .en { margin-top: 10px; font-size: 14px; letter-spacing: 3px; color: var(--muted); font-weight: 600; }
.hero .lead { margin-top: 20px; font-size: 18px; color: var(--muted); }
.hero-actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Sections ---------- */
section.block { padding: 84px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head .tag { color: var(--brand); font-weight: 700; font-size: 14px; letter-spacing: 1px; }
.section-head h2 { font-size: clamp(26px, 3.5vw, 38px); margin-top: 10px; font-weight: 800; }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 16px; }

/* 关于 */
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.about-grid p { color: var(--muted); margin-bottom: 14px; }
.about-card {
  background: linear-gradient(160deg, var(--brand-700), var(--brand));
  color: #fff; border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow);
}
.about-card h3 { font-size: 20px; margin-bottom: 16px; }
.about-card ul { list-style: none; display: grid; gap: 12px; }
.about-card li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; }
.about-card li::before { content: "✓"; color: #99f6e4; font-weight: 800; }

/* 核心数据条 */
.statbar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 8px; }
.stat { text-align: center; padding: 22px 12px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--soft); }
.stat .n { font-size: clamp(24px, 3vw, 34px); font-weight: 800; color: var(--brand-700); }
.stat .t { font-size: 13.5px; color: var(--muted); margin-top: 4px; }

/* 业务版图 */
.biz-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.biz { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 18px; transition: .2s; }
.biz:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--brand-600); }
.biz h3 { font-size: 16px; color: var(--brand-700); margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.biz h3 .num { width: 24px; height: 24px; border-radius: 7px; background: var(--brand-50); color: var(--brand); display: grid; place-items: center; font-size: 13px; font-weight: 800; flex: none; }
.biz ul { list-style: none; display: grid; gap: 8px; }
.biz li { font-size: 13px; color: var(--muted); padding-left: 14px; position: relative; line-height: 1.5; }
.biz li::before { content: ""; position: absolute; left: 0; top: 8px; width: 5px; height: 5px; border-radius: 50%; background: var(--brand-600); }

/* 企业生态 */
.eco-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.eco { display: flex; gap: 16px; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: var(--bg); align-items: flex-start; transition: .2s; }
.eco:hover { box-shadow: var(--shadow); border-color: var(--brand-600); }
.eco .dot { flex: none; width: 10px; height: 10px; border-radius: 50%; background: var(--brand); margin-top: 7px; }
.eco h3 { font-size: 17px; margin-bottom: 4px; }
.eco .sub { font-size: 12.5px; color: var(--brand); font-weight: 600; margin-bottom: 10px; }
.eco .meta { display: grid; gap: 5px; font-size: 13px; color: var(--muted); }
.eco .meta b { color: var(--ink); font-weight: 600; }

/* 创始人 */
.founder { display: grid; grid-template-columns: 280px 1fr; gap: 40px; align-items: center; background: var(--soft); border-radius: 20px; padding: 40px; }
.founder .avatar { aspect-ratio: 1; border-radius: 18px; overflow: hidden; background: linear-gradient(160deg, var(--brand-700), var(--brand-600)); color: #fff; display: grid; place-items: center; font-size: 60px; font-weight: 800; }
.founder .avatar img { width: 100%; height: 100%; object-fit: contain; }
.founder.solo { grid-template-columns: 1fr; }
.founder.solo > div { max-width: 760px; }
.founder h3 { font-size: 26px; margin-bottom: 4px; }
.founder .role { color: var(--brand); font-weight: 700; margin-bottom: 16px; }
.founder p { color: var(--muted); margin-bottom: 12px; }
.founder .hl { color: var(--ink); font-weight: 600; }
.tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.tag-pill { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 7px 14px; font-size: 13px; color: var(--ink); }

/* 资质墙 */
.creds { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cred { border: 1px solid var(--line); border-radius: 12px; padding: 18px; background: #fff; position: relative; overflow: hidden; }
.cred::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--brand-600), var(--brand-700)); }
.cred .ct { font-size: 12px; font-weight: 700; color: var(--brand-700); letter-spacing: .5px; margin-bottom: 8px; }
.cred .cn { font-size: 15px; font-weight: 800; margin-bottom: 12px; line-height: 1.4; }
.cred dl { display: grid; gap: 7px; font-size: 12.5px; }
.cred .row { display: flex; justify-content: space-between; gap: 10px; }
.cred dt { color: var(--muted); flex: none; }
.cred dd { color: var(--ink); font-weight: 600; text-align: right; word-break: break-all; }

/* 联系表单 */
.contact-wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
.contact-info h3 { font-size: 22px; margin-bottom: 12px; }
.contact-info p { color: var(--muted); margin-bottom: 18px; }
.info-item { display: flex; gap: 12px; margin-bottom: 14px; color: var(--muted); font-size: 15px; }
.info-item b { color: var(--ink); }
.form { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  font: inherit; color: var(--ink); background: var(--soft); transition: .2s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--brand); background: #fff; }
.field textarea { min-height: 110px; resize: vertical; }
.form-status { margin-top: 14px; font-size: 14.5px; font-weight: 600; min-height: 20px; }
.form-status.ok { color: var(--brand-700); }
.form-status.err { color: #dc2626; }

/* 页脚 */
.footer { background: var(--ink); color: #cbd5e1; padding: 48px 0 28px; }
.footer .top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px; }
.footer .logo { color: #fff; }
.footer small { color: #64748b; }
.footer .copy { border-top: 1px solid rgba(255,255,255,.08); margin-top: 28px; padding-top: 18px; font-size: 13.5px; color: #64748b; }

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .biz-grid { grid-template-columns: repeat(3, 1fr); }
  .creds { grid-template-columns: repeat(2, 1fr); }
}
/* 代表业绩 */
.lead { color: var(--muted); max-width: 760px; margin: 12px auto 0; font-size: 15px; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 30px; }
.case { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 0; overflow: hidden; transition: box-shadow .2s, transform .2s; }
.case:hover { box-shadow: 0 10px 28px rgba(15,118,110,.16); transform: translateY(-3px); }
.case-img { aspect-ratio: 4 / 3; overflow: hidden; background: #eef2f1; }
.case-img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s cubic-bezier(.2,.7,.3,1); }
.case:hover .case-img img { transform: scale(1.05); }
.case-body { padding: 18px 20px 20px; }
.case-cat { display: inline-block; font-size: 12px; font-weight: 700; color: var(--brand); background: var(--brand-50); border-radius: 999px; padding: 4px 11px; margin-bottom: 10px; }
.case h4 { font-size: 16px; margin-bottom: 8px; }
.case p { font-size: 14px; color: var(--muted); line-height: 1.6; margin: 0; }
@media (max-width: 900px) { .case-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .case-grid { grid-template-columns: 1fr; } }

@media (max-width: 900px) {
  .about-grid, .contact-wrap, .founder { grid-template-columns: 1fr; }
  .statbar { grid-template-columns: repeat(2, 1fr); }
  .eco-grid { grid-template-columns: 1fr; }
  .founder { text-align: left; }
  .nav-links { gap: 16px; }
}
@media (max-width: 560px) {
  .biz-grid { grid-template-columns: 1fr; }
  .creds { grid-template-columns: 1fr; }
  .nav-links a:not(.btn) { display: none; }
  section.block { padding: 60px 0; }
  .hero { padding: 64px 0 56px; }
}

/* 企业图谱 */
.graph-wrap { max-width: 920px; margin: 0 auto; }
.org-graph { width: 100%; height: auto; display: block; }
.org-graph text { text-anchor: middle; font-family: inherit; }
.org-graph .edge { stroke: var(--brand-600); stroke-width: 2; stroke-dasharray: 6 5; opacity: .55; }
.org-graph .edge-label { fill: var(--brand-700); font-size: 13px; font-weight: 600; }
.org-graph .node rect { fill: #fff; stroke: var(--brand-600); stroke-width: 1.5; }
.org-graph .node-name { fill: var(--ink); font-size: 15px; font-weight: 700; }
.org-graph .node-role { fill: var(--muted); font-size: 12.5px; }
.org-graph .node-center rect { fill: #115e59; stroke: #0d9488; stroke-width: 2; }
.org-graph .center-name { fill: #fff; font-size: 18px; font-weight: 800; }
.org-graph .center-role { fill: #99f6e4; font-size: 13px; font-weight: 600; }

/* 迈8 综合品牌 */
.my8-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 30px; }
.my8 { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 22px 20px; }
.my8-no { font-size: 13px; font-weight: 800; color: var(--brand-600); letter-spacing: 1px; }
.my8 h4 { font-size: 18px; margin: 6px 0 4px; }
.my8-en { font-size: 12.5px; color: var(--brand); font-weight: 600; margin-bottom: 10px; }
.my8 p:last-child { font-size: 14px; color: var(--muted); line-height: 1.6; }
@media (max-width: 900px) { .my8-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .my8-grid { grid-template-columns: 1fr; } }
.org-graph .center-sub { fill: #cbd5e1; font-size: 11.5px; }
.graph-note { text-align: center; color: var(--muted); font-size: 13.5px; max-width: 760px; margin: 26px auto 0; line-height: 1.7; }