/* =========================================================
   湖北隆汇科技有限公司 · 官网静态站全局样式
   适配火山引擎 Pages / 纯静态托管
   说明：品牌主色 生态青绿 #0b8a6f (brand-500)，深色 ink 可读文本
   ========================================================= */
:root {
  --brand-50: #ecf7f3;
  --brand-100: #d2ecdf;
  --brand-500: #0b8a6f;
  --brand-600: #0a7a63;
  --brand-700: #07654f;
  --brand-800: #06503e;
  --brand-900: #043f31;
  --ink-50: #f6f8f7;
  --ink-100: #eef1ef;
  --ink-200: #e2e7e4;
  --ink-300: #cbd3cf;
  --ink-400: #9aa7a1;
  --ink-500: #6b7872;
  --ink-600: #525e58;
  --ink-700: #3d4642;
  --ink-800: #2a312e;
  --ink-900: #1a201d;
  --ink-950: #0f1412;
  --grad-brand: linear-gradient(135deg, var(--brand-600), var(--brand-500));
  --radius: 20px;
  --shadow-sm: 0 1px 3px rgba(15, 20, 18, 0.06);
  --shadow-lg: 0 20px 40px -20px rgba(7, 101, 79, 0.35);
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--ink-700); background: #fff; line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { color: var(--ink-950); line-height: 1.25; }

.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.section-pad { padding: 92px 0; }
.bg-white { background: #fff; }
.bg-ink { background: var(--ink-50); }
.bg-dark { background: var(--ink-950); }

/* ---------- 顶部导航 ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.86); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid rgba(226,231,228,0.7); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 42px; width: auto; }
.brand-name { font-weight: 700; font-size: 18px; color: var(--ink-950); }
.brand-name small { display: block; font-size: 11px; font-weight: 400; color: var(--ink-400); letter-spacing: 0.05em; }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { font-size: 15px; color: var(--ink-600); transition: color .2s; position: relative; }
.nav-links a:hover { color: var(--brand-700); }
.nav-links a.active { color: var(--brand-700); font-weight: 600; }
.nav-cta { display: inline-flex; align-items: center; background: var(--grad-brand); color: #fff !important; padding: 10px 22px; border-radius: 999px; font-weight: 600; font-size: 14px; box-shadow: 0 10px 22px -10px rgba(7,101,79,0.5); transition: transform .2s, box-shadow .2s; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 14px 28px -10px rgba(7,101,79,0.6); }
.menu-toggle { display: none; background: none; border: 0; cursor: pointer; font-size: 26px; color: var(--ink-900); }
.mobile-menu { display: none; border-top: 1px solid var(--ink-200); background: #fff; padding: 12px 0; }
.mobile-menu a { display: block; padding: 12px 24px; font-size: 15px; color: var(--ink-700); }
.mobile-menu a.active { color: var(--brand-700); font-weight: 600; }

/* ---------- 按钮 ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; border-radius: 999px; font-weight: 600; font-size: 14px; padding: 12px 26px; border: 0; cursor: pointer; transition: transform .2s, box-shadow .2s, background .2s; }
.btn-primary { background: var(--grad-brand); color: #fff; box-shadow: 0 12px 26px -12px rgba(7,101,79,0.6); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost { background: rgba(255,255,255,0.1); color: #fff; border: 1px solid rgba(255,255,255,0.35); }
.btn-ghost:hover { background: rgba(255,255,255,0.18); }

/* ---------- Hero（首页） ---------- */
.hero { position: relative; overflow: hidden; background: var(--ink-950); color: #fff; padding: 130px 0 120px; }
.hero::before { content:""; position:absolute; inset:0; background: radial-gradient(ellipse at 80% -20%, rgba(11,138,111,0.35), transparent 60%); pointer-events:none; }
.hero .grid-line { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.7), transparent 75%); pointer-events: none; }
.hero-inner { position: relative; z-index: 2; max-width: 860px; }
.hero .eyebrow { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.16); color: var(--brand-100); padding: 7px 16px; border-radius: 999px; font-size: 12px; letter-spacing: 0.28em; }
.hero h1 { color: #fff; font-size: clamp(30px, 5vw, 54px); line-height: 1.15; margin: 26px 0 22px; font-weight: 800; }
.hero h1 .grad { background: linear-gradient(90deg, #4fd6b3, #7fe8cd); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: rgba(255,255,255,0.68); font-size: 17px; max-width: 640px; }
.hero-actions { margin-top: 34px; display: flex; gap: 16px; flex-wrap: wrap; }
.hero-tags { margin-top: 40px; display: flex; gap: 10px; flex-wrap: wrap; }
.hero-tags span { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.14); color: rgba(255,255,255,0.8); padding: 6px 14px; border-radius: 999px; font-size: 13px; }
.hero-stats { margin-top: 48px; display: flex; gap: 40px; flex-wrap: wrap; border-top: 1px solid rgba(255,255,255,0.12); padding-top: 30px; }
.hero-stats b { display: block; font-size: 28px; color: #fff; font-weight: 800; }
.hero-stats b i { font-style: normal; color: var(--brand-100); }
.hero-stats span { font-size: 13px; color: rgba(255,255,255,0.6); }

/* ---------- 板块头部 ---------- */
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .eyebrow { display: inline-flex; align-items: center; gap: 8px; background: var(--brand-50); color: var(--brand-700); border: 1px solid rgba(11,138,111,0.18); padding: 6px 15px; border-radius: 999px; font-size: 12px; letter-spacing: 0.22em; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 42px); margin: 18px 0 10px; }
.section-head .en { letter-spacing: 0.3em; color: var(--ink-400); font-size: 12px; }
.section-head .desc { color: var(--ink-500); margin-top: 16px; line-height: 1.8; }

/* ---------- 网格/卡片 ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card { background: #fff; border: 1px solid var(--ink-200); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-sm); transition: transform .25s, box-shadow .25s; }
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.card .ic { display: inline-flex; width: 56px; height: 56px; align-items: center; justify-content: center; border-radius: 16px; background: var(--brand-50); color: var(--brand-700); border: 1px solid rgba(11,138,111,0.18); font-size: 24px; }
.card.alt { background: var(--ink-50); border-color: var(--ink-100); }
.card h3 { font-size: 17px; margin: 18px 0 10px; }
.card p { color: var(--ink-600); font-size: 14px; line-height: 1.8; }
.card ul { margin-top: 12px; list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.card ul li { background: var(--ink-50); border: 1px solid var(--ink-200); color: var(--ink-600); padding: 5px 12px; border-radius: 999px; font-size: 12px; }
.card.feature { border-color: rgba(11,138,111,0.35); background: linear-gradient(160deg, var(--brand-50), #fff); }

/* ---------- 双栏 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.kpis { display: flex; gap: 24px; flex-wrap: wrap; margin-top: 30px; }
.kpi { flex: 1; min-width: 140px; background: var(--ink-50); border: 1px solid var(--ink-200); border-radius: 16px; padding: 18px 20px; }
.kpi b { display: block; font-size: 26px; color: var(--brand-700); font-weight: 800; }
.kpi span { font-size: 13px; color: var(--ink-500); }

/* ---------- 大文案/CTA ---------- */
.tick-list { list-style: none; margin-top: 20px; }
.tick-list li { position: relative; padding-left: 28px; margin-bottom: 12px; color: var(--ink-600); font-size: 15px; }
.tick-list li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; display: inline-flex; align-items: center; justify-content: center; background: var(--brand-50); color: var(--brand-700); border-radius: 50%; font-size: 12px; font-weight: 700; }

/* ---------- 步骤/流水线 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin: 30px 0; }
.step { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.14); border-radius: 14px; padding: 16px; text-align: center; color: rgba(255,255,255,0.82); position: relative; }
.step b { display: block; font-size: 14px; color: #fff; margin-bottom: 4px; }
.step span { font-size: 12px; color: rgba(255,255,255,0.6); }
.step::after { content: "→"; position: absolute; right: -12px; top: 50%; transform: translateY(-50%); color: var(--brand-100); z-index: 2; }
.step:last-child::after { display: none; }

/* ---------- 页头（内页 banner） ---------- */
.page-banner { position: relative; overflow: hidden; background: var(--ink-950); color: #fff; padding: 84px 0 72px; }
.page-banner::before { content:""; position:absolute; inset:0; background: radial-gradient(ellipse at 85% 10%, rgba(11,138,111,0.4), transparent 55%); }
.page-banner .grid-line { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px); background-size: 44px 44px; pointer-events:none; }
.page-banner .inner { position: relative; z-index: 2; max-width: 760px; }
.page-banner .en { display: inline-flex; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.14); color: var(--brand-100); padding: 6px 16px; border-radius: 999px; font-size: 12px; letter-spacing: 0.3em; }
.page-banner h1 { color: #fff; font-size: clamp(28px, 4vw, 44px); margin: 20px 0 8px; font-weight: 800; }
.page-banner p { color: rgba(255,255,255,0.62); max-width: 600px; }

/* ---------- 表格/列表 ---------- */
.plain-list { list-style: none; }
.plain-list li { position: relative; padding-left: 24px; margin-bottom: 12px; color: var(--ink-600); font-size: 15px; }
.plain-list li::before { content: ""; position: absolute; left: 0; top: 10px; width: 8px; height: 8px; border-radius: 50%; background: var(--brand-500); }
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { background: #fff; border: 1px solid rgba(11,138,111,0.3); color: var(--brand-800); padding: 8px 16px; border-radius: 999px; font-size: 13px; }

/* ---------- 预约表单 ---------- */
.form { background: var(--ink-50); border: 1px solid var(--ink-200); border-radius: var(--radius); padding: 34px; }
.form h3 { display: flex; align-items: center; gap: 10px; }
.form .grp { margin-bottom: 18px; }
.form label { display: block; font-size: 14px; color: var(--ink-700); margin-bottom: 7px; font-weight: 500; }
.form label em { color: var(--brand-600); font-style: normal; }
.form input, .form textarea, .form select { width: 100%; border: 1px solid var(--ink-200); background: #fff; border-radius: 12px; padding: 12px 15px; font-size: 14px; color: var(--ink-900); font-family: inherit; outline: none; transition: border-color .2s, box-shadow .2s; }
.form input:focus, .form textarea:focus, .form select:focus { border-color: var(--brand-500); box-shadow: 0 0 0 3px rgba(11,138,111,0.14); }
.form textarea { resize: vertical; min-height: 90px; }
.form .btn { width: 100%; justify-content: center; padding: 15px; }
.form-note { text-align: center; font-size: 12px; color: var(--ink-400); margin-top: 14px; }
.form-success { text-align: center; padding: 40px; background: var(--brand-50); border: 1px solid rgba(11,138,111,0.25); border-radius: var(--radius); }
.form-success .big { font-size: 40px; }
.form-success h3 { margin: 14px 0 8px; }
.form-success p { color: var(--ink-600); font-size: 14px; }

/* ---------- 深色块 ---------- */
.dark-cta { background: var(--ink-950); border-radius: 28px; padding: 58px 40px; text-align: center; color: #fff; }
.dark-cta h3 { color: #fff; font-size: 28px; margin-bottom: 12px; }
.dark-cta p { color: rgba(255,255,255,0.6); max-width: 620px; margin: 0 auto 26px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink-950); color: rgba(255,255,255,0.6); padding: 60px 0 26px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; }
.footer-brand img { height: 40px; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.9; max-width: 320px; color: rgba(255,255,255,0.55); }
.footer-col h4 { color: #fff; margin-bottom: 18px; font-size: 15px; }
.footer-col a { display: block; color: rgba(255,255,255,0.6); font-size: 14px; margin-bottom: 10px; transition: color .2s; }
.footer-col a:hover { color: #7fe8cd; }
.footer-col .meta { color: rgba(255,255,255,0.55); font-size: 14px; margin-bottom: 10px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); margin-top: 40px; padding-top: 22px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 12px; color: rgba(255,255,255,0.4); }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .grid-3, .grid-4, .grid-2, .split, .footer-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .menu-toggle { display: block; }
  .mobile-menu.open { display: block; }
  .steps { grid-template-columns: 1fr 1fr; }
  .section-pad { padding: 64px 0; }
  .hero { padding: 90px 0; }
}
@media (max-width: 600px) {
  .steps { grid-template-columns: 1fr; }
  .hero-actions, .kpis { flex-direction: column; }
}