/* ============================================================
   enredit · 云积天赫 官网样式
   品牌色系：种草绿（主） #00A870 · 灵犀红（辅） #FF3D5A · 墨石（中性） #1A2233
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  /* 种草绿 Seed Green */
  --green-50:  #E8F8F2;
  --green-100: #C5EEDD;
  --green-500: #00A870;
  --green-600: #007F54;
  --green-700: #004D33;

  /* 灵犀红 Lingxi Red */
  --red-50:  #FFE8EC;
  --red-500: #FF3D5A;
  --red-600: #E01E3C;

  /* 墨石中性 Ink Stone */
  --ink-900: #1A2233;
  --ink-700: #5A6478;
  --ink-500: #8A93A6;
  --line:    #E5E8EE;
  --bg:      #F7F9FC;
  --white:   #FFFFFF;

  /* 功能 */
  --info:  #2E6BFF;
  --warn:  #FF9F1C;

  /* 渐变：KFS 链路 种草→放大→转化 */
  --grad-kfs: linear-gradient(120deg, #00A870 0%, #00C9A0 45%, #FF3D5A 100%);
  --grad-green: linear-gradient(135deg, #00A870 0%, #00C9A0 100%);

  /* 投影 */
  --shadow-sm: 0 2px 8px rgba(0, 40, 30, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 40, 30, 0.08);
  --shadow-lg: 0 16px 48px rgba(0, 40, 30, 0.12);

  /* 圆角 */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-pill: 999px;

  /* 容器 */
  --container: 1200px;
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink-900);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---------- 布局工具 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.bg-soft { background: var(--bg); }
.bg-green-soft { background: var(--green-50); }
.text-center { text-align: center; }

/* ---------- 排版 ---------- */
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; letter-spacing: -0.01em; }
.eyebrow {
  display: inline-block;
  font-size: 14px; font-weight: 600;
  color: var(--green-600);
  background: var(--green-50);
  padding: 6px 14px; border-radius: var(--r-pill);
  margin-bottom: 16px; letter-spacing: 0.02em;
}
.section-title { font-size: clamp(28px, 4vw, 40px); margin-bottom: 16px; }
.section-sub { font-size: 17px; color: var(--ink-700); max-width: 720px; }
.section-head { margin-bottom: 56px; }
.section-head.text-center .section-sub { margin: 0 auto; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--r-sm);
  font-size: 16px; font-weight: 600;
  transition: all .2s ease; white-space: nowrap;
}
.btn-primary { background: var(--green-500); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--green-600); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-red { background: var(--red-500); color: #fff; box-shadow: var(--shadow-sm); }
.btn-red:hover { background: var(--red-600); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { background: #fff; color: var(--ink-900); border: 1.5px solid var(--line); }
.btn-outline:hover { border-color: var(--green-500); color: var(--green-600); }
.btn-ghost { color: var(--green-600); padding: 10px 0; }
.btn-ghost:hover { color: var(--green-700); }
.btn-lg { padding: 16px 36px; font-size: 17px; }
.link-arrow { color: var(--green-600); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.link-arrow:hover { gap: 8px; color: var(--green-700); transition: gap .2s; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.nav-brand { display: flex; align-items: center; gap: 12px; }
.nav-brand img { height: 40px; width: auto; }
.nav-brand .brand-name { font-size: 20px; font-weight: 800; color: var(--ink-900); letter-spacing: -0.02em; }
.nav-brand .brand-name b { color: var(--green-500); }
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-menu a {
  padding: 10px 16px; font-size: 15px; font-weight: 500; color: var(--ink-700);
  border-radius: var(--r-sm); transition: all .15s;
}
.nav-menu a:hover { color: var(--green-600); background: var(--green-50); }
.nav-menu a.active { color: var(--green-600); font-weight: 600; }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; font-size: 24px; color: var(--ink-900); padding: 8px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 500px at 80% -10%, rgba(0,168,112,0.10), transparent 60%),
    radial-gradient(900px 500px at 10% 10%, rgba(255,61,90,0.06), transparent 55%),
    var(--white);
  padding: 88px 0 96px;
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.15; margin-bottom: 24px; }
.hero h1 .grad { background: var(--grad-kfs); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero h1 .green { color: var(--green-500); }
.hero p.lead { font-size: 19px; color: var(--ink-700); margin-bottom: 32px; max-width: 560px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-stats { display: flex; gap: 40px; flex-wrap: wrap; }
.hero-stat .num { font-size: 36px; font-weight: 800; color: var(--green-600); line-height: 1; font-family: "Inter", "DIN", sans-serif; }
.hero-stat .num .plus { color: var(--green-500); }
.hero-stat .label { font-size: 14px; color: var(--ink-500); margin-top: 6px; }

/* hero 右侧视觉卡片 */
.hero-visual { position: relative; }
.dash-card {
  background: #fff; border-radius: var(--r-lg); box-shadow: var(--shadow-lg);
  padding: 24px; border: 1px solid var(--line);
}
.dash-card .dc-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.dash-card .dc-title { font-weight: 700; font-size: 15px; }
.dash-card .dc-tag { font-size: 12px; color: var(--green-600); background: var(--green-50); padding: 4px 10px; border-radius: var(--r-pill); }
.kpi-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 18px; }
.kpi { background: var(--bg); border-radius: var(--r-md); padding: 16px; }
.kpi .k-val { font-size: 24px; font-weight: 800; color: var(--ink-900); font-family: "Inter", sans-serif; }
.kpi .k-val.up { color: var(--green-500); }
.kpi .k-label { font-size: 12px; color: var(--ink-500); margin-top: 4px; }
.spark { display: flex; align-items: flex-end; gap: 6px; height: 60px; margin-top: 4px; }
.spark span { flex: 1; background: var(--green-100); border-radius: 4px 4px 0 0; }
.spark span.tall { background: var(--green-500); }
.funnel { display: flex; flex-direction: column; gap: 8px; }
.funnel .step { height: 30px; border-radius: 6px; color: #fff; font-size: 12px; display: flex; align-items: center; padding: 0 12px; font-weight: 600; }
.funnel .s1 { width: 100%; background: var(--green-500); }
.funnel .s2 { width: 78%; background: #00C9A0; }
.funnel .s3 { width: 54%; background: #FF8A5C; }
.funnel .s4 { width: 32%; background: var(--red-500); }

/* ---------- 业务卡片 ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.biz-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 36px 32px; transition: all .25s; position: relative; overflow: hidden;
}
.biz-card::before { content: ""; position: absolute; left: 0; top: 0; width: 4px; height: 0; background: var(--green-500); transition: height .3s; }
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--green-100); }
.biz-card:hover::before { height: 100%; }
.biz-icon {
  width: 56px; height: 56px; border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 20px;
}
.biz-icon.green { background: var(--green-50); color: var(--green-600); }
.biz-icon.red { background: var(--red-50); color: var(--red-600); }
.biz-icon.ink { background: #EEF1F6; color: var(--ink-700); }
.biz-icon svg { width: 30px; height: 30px; }
.biz-card .biz-tag { font-size: 12px; font-weight: 600; color: var(--green-600); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 8px; }
.biz-card h3 { font-size: 22px; margin-bottom: 12px; }
.biz-card p { color: var(--ink-700); font-size: 15px; margin-bottom: 20px; }
.biz-card ul li { font-size: 14px; color: var(--ink-700); padding: 6px 0 6px 24px; position: relative; }
.biz-card ul li::before { content: "✓"; position: absolute; left: 0; color: var(--green-500); font-weight: 700; }

/* ---------- 数据统计带 ---------- */
.stat-band { background: var(--grad-green); color: #fff; }
.stat-band .stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-band .stat { text-align: center; }
.stat-band .stat .num { font-size: clamp(34px, 4vw, 48px); font-weight: 800; font-family: "Inter", "DIN", sans-serif; line-height: 1; }
.stat-band .stat .label { font-size: 15px; opacity: .92; margin-top: 10px; }

/* ---------- 特性 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 32px; transition: all .2s;
}
.feature:hover { box-shadow: var(--shadow-md); border-color: var(--green-100); }
.feature .f-num { font-size: 14px; font-weight: 700; color: var(--red-500); font-family: "Inter", sans-serif; margin-bottom: 8px; }
.feature h3 { font-size: 20px; margin-bottom: 10px; }
.feature p { color: var(--ink-700); font-size: 15px; margin-bottom: 14px; }
.feature ul li { font-size: 14px; color: var(--ink-700); padding: 5px 0 5px 22px; position: relative; }
.feature ul li::before { content: "•"; position: absolute; left: 4px; color: var(--green-500); font-weight: 700; }
.feature .metric { display: inline-block; margin-top: 8px; background: var(--green-50); color: var(--green-700); font-weight: 700; padding: 6px 14px; border-radius: var(--r-sm); font-size: 14px; }

/* ---------- 步骤流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.step-card { text-align: center; position: relative; }
.step-card .step-num {
  width: 48px; height: 48px; border-radius: 50%; background: var(--green-500); color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800;
  margin: 0 auto 18px; font-family: "Inter", sans-serif; box-shadow: 0 6px 16px rgba(0,168,112,0.3);
}
.step-card h4 { font-size: 18px; margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--ink-700); }

/* ---------- 信任 / 认证 ---------- */
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.trust-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-md); padding: 28px; text-align: center; }
.trust-card .ti { font-size: 28px; margin-bottom: 12px; }
.trust-card h4 { font-size: 17px; margin-bottom: 10px; }
.trust-card p { font-size: 14px; color: var(--ink-700); }
.industry-pills { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.industry-pills span { background: #fff; border: 1px solid var(--line); padding: 10px 20px; border-radius: var(--r-pill); font-size: 15px; color: var(--ink-700); transition: all .15s; }
.industry-pills span:hover { border-color: var(--green-500); color: var(--green-600); background: var(--green-50); }

/* ---------- LOGO 墙 ---------- */
.brand-wall-grid { display: flex; flex-direction: column; gap: 16px; margin-bottom: 8px; }
.brand-strip {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 18px 24px; overflow: hidden;
}
.brand-strip img {
  width: 100%; height: auto; display: block;
  filter: grayscale(100%) opacity(0.72);
  transition: filter .35s ease;
}
.brand-strip:hover img { filter: grayscale(0) opacity(1); }
.brand-wall-note { text-align: center; color: var(--ink-500); font-size: 14px; margin: 20px 0 40px; }

/* ---------- CTA 区 ---------- */
.cta-band {
  background: var(--grad-kfs); color: #fff; border-radius: var(--r-lg);
  padding: 64px 48px; text-align: center; position: relative; overflow: hidden;
}
.cta-band h2 { font-size: clamp(26px, 3.5vw, 38px); margin-bottom: 16px; }
.cta-band p { font-size: 18px; opacity: .95; margin-bottom: 32px; max-width: 600px; margin-left: auto; margin-right: auto; }
.cta-band .btn { background: #fff; color: var(--green-700); }
.cta-band .btn:hover { background: var(--ink-900); color: #fff; }

/* ---------- 页面通用 hero（内页） ---------- */
.page-hero {
  background:
    radial-gradient(900px 400px at 85% -20%, rgba(0,168,112,0.10), transparent 60%),
    var(--bg);
  padding: 72px 0 64px; border-bottom: 1px solid var(--line);
}
.page-hero h1 { font-size: clamp(30px, 4.5vw, 46px); margin-bottom: 16px; }
.page-hero p { font-size: 18px; color: var(--ink-700); max-width: 720px; }

/* ---------- 双栏内容 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split.reverse .split-text { order: 2; }
.split h2 { font-size: clamp(26px, 3.5vw, 36px); margin-bottom: 16px; }
.split p { color: var(--ink-700); margin-bottom: 16px; }
.split ul.check li { padding: 8px 0 8px 28px; position: relative; color: var(--ink-700); }
.split ul.check li::before { content: "✓"; position: absolute; left: 0; color: var(--green-500); font-weight: 700; }

/* 痛点块 */
.pain-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.pain-item { background: #fff; border: 1px solid var(--line); border-left: 3px solid var(--red-500); border-radius: var(--r-md); padding: 20px; }
.pain-item h4 { font-size: 16px; margin-bottom: 6px; }
.pain-item p { font-size: 14px; color: var(--ink-700); }

/* ---------- 表格 ---------- */
table.spec { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--r-md); overflow: hidden; box-shadow: var(--shadow-sm); }
table.spec th, table.spec td { padding: 16px 20px; text-align: left; border-bottom: 1px solid var(--line); font-size: 15px; }
table.spec th { background: var(--green-700); color: #fff; font-weight: 600; }
table.spec tr:last-child td { border-bottom: none; }
table.spec tr:hover td { background: var(--green-50); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info .ci-item { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-info .ci-item .ci-ico { width: 44px; height: 44px; border-radius: var(--r-md); background: var(--green-50); color: var(--green-600); display: flex; align-items: center; justify-content: center; font-size: 20px; flex-shrink: 0; }
.contact-info .ci-item h4 { font-size: 15px; color: var(--ink-500); margin-bottom: 4px; font-weight: 500; }
.contact-info .ci-item p { font-size: 17px; color: var(--ink-900); font-weight: 600; }
.contact-form { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 36px; box-shadow: var(--shadow-sm); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--ink-900); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1.5px solid var(--line); border-radius: var(--r-sm);
  font-size: 15px; font-family: inherit; transition: border-color .15s; background: #fff;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--green-500); box-shadow: 0 0 0 3px var(--green-50); }
.form-group textarea { resize: vertical; min-height: 100px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink-900); color: #C5CCD9; padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand img { height: 40px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer-brand p { font-size: 14px; color: #AEB6C6; max-width: 320px; }
.footer-col h5 { color: #fff; font-size: 15px; margin-bottom: 18px; font-weight: 600; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 14px; color: #AEB6C6; transition: color .15s; }
.footer-col ul li a:hover { color: var(--green-500); }
.footer-cert { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.footer-cert span { font-size: 12px; color: #AEB6C6; border: 1px solid #3A4458; padding: 6px 12px; border-radius: var(--r-sm); }
.footer-bottom { border-top: 1px solid #3A4458; padding-top: 24px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; color: #AEB6C6; }
.footer-bottom a { color: inherit; text-decoration: none; transition: color .15s; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero-grid, .split, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .split.reverse .split-text { order: 0; }
  .biz-grid, .feature-grid { grid-template-columns: 1fr; }
  .stat-band .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .trust-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .section { padding: 64px 0; }
  .nav-menu, .nav-cta .btn { display: none; }
  .nav-toggle { display: block; }
  .nav-menu.open {
    display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; padding: 16px 24px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md);
    align-items: stretch; gap: 4px;
  }
  .nav-menu.open a { padding: 14px 16px; }
  .hero { padding: 56px 0 64px; }
  .hero-stats { gap: 28px; }
  .pain-list { grid-template-columns: 1fr; }
  .cta-band { padding: 48px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .stat-band .stat-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .kpi-row { grid-template-columns: 1fr 1fr; }
}