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

:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #EFF4FF;
  --ink: #0F1B33;
  --ink-2: #42506B;
  --ink-3: #8A94A9;
  --bg: #FFFFFF;
  --bg-gray: #F6F8FB;
  --border: #E6EAF2;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(15, 27, 51, .08);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { line-height: 1.3; letter-spacing: .5px; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px; font-weight: 600; cursor: pointer;
  transition: all .2s ease; border: 1px solid transparent; white-space: nowrap;
}
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-block { width: 100%; padding: 13px; font-size: 15px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(37, 99, 235, .3); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-outline { border-color: var(--border); color: var(--ink); background: #fff; }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-ghost { color: var(--ink-2); }
.btn-ghost:hover { color: var(--primary); }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.18); }

/* ========== 导航栏 ========== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.85); backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent; transition: all .3s;
}
.navbar.scrolled { border-bottom-color: var(--border); box-shadow: 0 4px 20px rgba(15,27,51,.06); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.logo { display: flex; align-items: center; gap: 9px; font-weight: 800; font-size: 21px; letter-spacing: .3px; }
.logo-img { width: 34px; height: 34px; display: block; }
.logo-img.sm { width: 22px; height: 22px; display: inline-block; vertical-align: -4px; }

.nav-links { display: flex; gap: 36px; }
.nav-links a { font-size: 15px; color: var(--ink-2); font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: var(--primary); }
.nav-cta-mobile { display: none; }

.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: all .3s; }

/* ========== Hero ========== */
.hero { position: relative; padding: 160px 0 100px; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(600px 400px at 85% 10%, rgba(37,99,235,.10), transparent 60%),
    radial-gradient(500px 350px at 10% 90%, rgba(37,99,235,.07), transparent 60%),
    linear-gradient(180deg, #F7FAFF 0%, #fff 100%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }

.hero-badge {
  display: inline-block; padding: 6px 14px; border-radius: 100px;
  background: var(--primary-light); color: var(--primary);
  font-size: 13px; font-weight: 600; margin-bottom: 22px;
}
.hero h1 { font-size: 48px; font-weight: 800; margin-bottom: 20px; }
.text-gradient {
  background: linear-gradient(120deg, var(--primary), #38BDF8);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: 17px; color: var(--ink-2); max-width: 520px; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 14px; margin-bottom: 44px; flex-wrap: wrap; }

.hero-proof { display: flex; align-items: center; gap: 26px; }
.proof-item { display: flex; flex-direction: column; }
.proof-item strong { font-size: 26px; color: var(--ink); font-weight: 800; }
.proof-item span { font-size: 13px; color: var(--ink-3); }
.proof-divider { width: 1px; height: 36px; background: var(--border); }

/* Hero 产品界面示意 */
.hero-visual { position: relative; }
.mock-browser {
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow);
  border: 1px solid var(--border); overflow: hidden;
}
.mock-titlebar {
  display: flex; align-items: center; gap: 7px; padding: 11px 16px;
  background: #FAFBFD; border-bottom: 1px solid var(--border);
}
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot.red { background: #FF5F57; } .dot.yellow { background: #FEBC2E; } .dot.green { background: #28C840; }
.mock-url {
  margin-left: 10px; font-size: 12px; color: var(--ink-3);
  background: #fff; border: 1px solid var(--border); border-radius: 6px; padding: 3px 14px;
}
.mock-body { display: flex; min-height: 330px; }
.mock-sidebar { width: 56px; border-right: 1px solid var(--border); padding: 16px 12px; display: flex; flex-direction: column; gap: 12px; }
.mock-side-item { height: 32px; border-radius: 8px; background: var(--bg-gray); }
.mock-side-item.active { background: var(--primary-light); border: 1px solid rgba(37,99,235,.25); }
.mock-main { flex: 1; padding: 18px; }
.mock-searchbar {
  display: flex; align-items: center; gap: 8px; padding: 9px 12px;
  border: 1px solid var(--border); border-radius: 9px; margin-bottom: 16px; background: #fff;
}
.mock-search-icon { font-size: 13px; }
.mock-search-text { flex: 1; font-size: 12.5px; color: var(--ink-2); }
.mock-search-btn { font-size: 12px; background: var(--primary); color: #fff; padding: 4px 14px; border-radius: 6px; font-weight: 600; }
.mock-row {
  display: grid; grid-template-columns: 1.4fr 1fr .7fr 1fr; gap: 8px;
  padding: 10px 10px; font-size: 12.5px; align-items: center;
  border-bottom: 1px solid var(--bg-gray);
}
.mock-row-head { color: var(--ink-3); font-size: 11.5px; font-weight: 600; }
.mock-co { font-weight: 600; color: var(--ink); }
.score {
  font-style: normal; font-weight: 700; color: #fff; background: #16A34A;
  border-radius: 6px; padding: 2px 8px; font-size: 11.5px;
}
.score.s95 { background: #22C55E; } .score.s92 { background: #84CC16; } .score.s90 { background: #EAB308; }
.mock-mail { color: var(--primary); font-size: 12px; }

.float-card {
  position: absolute; display: flex; align-items: center; gap: 10px;
  background: #fff; border-radius: 12px; box-shadow: var(--shadow);
  border: 1px solid var(--border); padding: 12px 16px; font-size: 13px;
}
.float-card strong { display: block; font-size: 13px; }
.float-card span { font-size: 12px; color: var(--ink-3); }
.fc-icon { font-size: 20px; }
.float-card-1 { top: -18px; right: -14px; animation: float 4s ease-in-out infinite; }
.float-card-2 { bottom: -16px; left: -18px; animation: float 4s ease-in-out 1.5s infinite; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* ========== 通用 Section ========== */
.section { padding: 96px 0; }
.section-gray { background: var(--bg-gray); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 60px; }
.section-tag {
  display: inline-block; padding: 5px 14px; border-radius: 100px;
  background: var(--primary-light); color: var(--primary);
  font-size: 13px; font-weight: 600; margin-bottom: 14px;
}
.section-head h2 { font-size: 34px; font-weight: 800; margin-bottom: 12px; }
.section-head p { color: var(--ink-2); font-size: 16px; }

/* ========== 功能块 ========== */
.feature-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
  margin-bottom: 96px;
}
.feature-block:last-child { margin-bottom: 0; }
.feature-block.reverse .feature-copy { order: 2; }
.feature-block.reverse .feature-visual { order: 1; }

.feature-no {
  font-size: 14px; font-weight: 800; color: var(--primary);
  letter-spacing: 2px; display: block; margin-bottom: 10px;
}
.feature-copy h3 { font-size: 27px; font-weight: 800; margin-bottom: 14px; }
.feature-copy > p { color: var(--ink-2); font-size: 15.5px; margin-bottom: 22px; }
.feature-list li {
  position: relative; padding: 10px 0 10px 30px; color: var(--ink-2); font-size: 15px;
}
.feature-list li::before {
  content: "✓"; position: absolute; left: 0; top: 10px;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary);
  font-size: 12px; font-weight: 800; display: flex; align-items: center; justify-content: center;
}
.feature-list strong { color: var(--ink); }
.link-arrow { display: inline-block; margin-top: 14px; color: var(--primary); font-weight: 600; font-size: 15px; }
.link-arrow:hover { text-decoration: underline; }

/* 功能示意图 */
.feature-visual { border-radius: 18px; padding: 36px; }
.visual-blue { background: linear-gradient(135deg, #EFF4FF, #E0ECFF); }
.visual-green { background: linear-gradient(135deg, #ECFDF5, #D1FAE5); }
.visual-purple { background: linear-gradient(135deg, #F5F3FF, #EDE9FE); }
.fv-panel { background: #fff; border-radius: 14px; box-shadow: var(--shadow); padding: 24px; }
.fv-row { display: flex; gap: 8px; }
.fv-row-top { margin-bottom: 18px; flex-wrap: wrap; }
.fv-chip {
  font-size: 12px; padding: 5px 12px; border-radius: 100px;
  background: var(--primary-light); color: var(--primary); font-weight: 600;
}
.fv-line { height: 10px; border-radius: 5px; background: var(--bg-gray); margin-bottom: 12px; }
.fv-line.w40 { width: 40%; } .fv-line.w60 { width: 60%; } .fv-line.w70 { width: 70%; }
.fv-line.w80 { width: 80%; } .fv-line.w90 { width: 90%; }
.fv-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 18px; }
.fv-mini { background: var(--bg-gray); border-radius: 10px; padding: 14px 10px; text-align: center; }
.fv-mini strong { display: block; font-size: 20px; color: var(--primary); font-weight: 800; }
.fv-mini span { font-size: 11.5px; color: var(--ink-3); }

.fv-kanban { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.fv-col-title { font-size: 12.5px; font-weight: 700; color: var(--ink-2); display: block; margin-bottom: 10px; }
.fv-card-item { height: 46px; border-radius: 8px; background: var(--bg-gray); margin-bottom: 10px; }
.fv-card-item.short { height: 30px; }
.fv-card-item.win { height: 46px; background: linear-gradient(135deg, #16A34A, #4ADE80); }

.fv-mail-head { display: flex; gap: 12px; align-items: center; margin-bottom: 18px; }
.fv-avatar {
  width: 38px; height: 38px; border-radius: 10px; background: #7C3AED; color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 14px;
}
.fv-mail-lines { flex: 1; }
.fv-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 18px; }
.fv-stat { text-align: center; background: var(--bg-gray); border-radius: 10px; padding: 12px 8px; }
.fv-stat span { display: block; font-size: 12px; color: var(--ink-3); }
.fv-stat strong { font-size: 18px; color: #7C3AED; font-weight: 800; }

/* ========== 对比表 ========== */
.compare-table-wrap { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow); background: #fff; }
.compare-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.compare-table th, .compare-table td { padding: 18px 22px; text-align: left; font-size: 14.5px; }
.compare-table thead th { font-size: 15px; font-weight: 700; border-bottom: 2px solid var(--border); }
.compare-table tbody tr { border-bottom: 1px solid var(--bg-gray); }
.compare-table tbody tr:last-child { border-bottom: none; }
.compare-table tbody td:first-child { font-weight: 600; color: var(--ink-2); width: 150px; }
.compare-table tbody td { color: var(--ink-3); }
.compare-table .col-leadsice { background: var(--primary-light); color: var(--ink); font-weight: 600; }
.compare-table thead .col-leadsice { color: var(--primary); display: table-cell; border-bottom: 2px solid var(--primary); }

/* ========== 客户案例 ========== */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px; display: flex; flex-direction: column; gap: 18px;
  transition: all .25s ease;
}
.case-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: transparent; }
.case-metrics { display: flex; gap: 14px; }
.case-metrics > div {
  flex: 1; background: var(--primary-light); border-radius: 10px; padding: 14px 10px; text-align: center;
}
.case-metrics strong { display: block; font-size: 24px; color: var(--primary); font-weight: 800; }
.case-metrics span { font-size: 12px; color: var(--ink-2); }
.case-quote { color: var(--ink-2); font-size: 14.5px; flex: 1; }
.case-author { display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--bg-gray); padding-top: 16px; }
.case-avatar {
  width: 42px; height: 42px; border-radius: 50%; background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px;
}
.case-author strong { display: block; font-size: 14px; }
.case-author span { font-size: 12.5px; color: var(--ink-3); }

/* ========== 价格 ========== */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; align-items: stretch; }
.price-card {
  position: relative; background: #fff; border: 1px solid var(--border);
  border-radius: 18px; padding: 36px 30px; display: flex; flex-direction: column;
  transition: all .25s ease;
}
.price-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.price-card.popular { border: 2px solid var(--primary); box-shadow: 0 20px 50px rgba(37,99,235,.15); }
.price-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: #fff; font-size: 12.5px; font-weight: 700;
  padding: 5px 18px; border-radius: 100px; white-space: nowrap;
}
.price-card h3 { font-size: 20px; font-weight: 800; }
.price-desc { font-size: 13.5px; color: var(--ink-3); margin-bottom: 18px; }
.price-num { margin-bottom: 24px; }
.price-num strong { font-size: 40px; font-weight: 800; color: var(--ink); }
.price-num span { color: var(--ink-3); font-size: 14px; }
.price-list { flex: 1; margin-bottom: 28px; }
.price-list li { position: relative; padding: 8px 0 8px 26px; font-size: 14.5px; color: var(--ink-2); }
.price-list li::before {
  content: "✓"; position: absolute; left: 0; color: var(--primary); font-weight: 800;
}

/* ========== CTA ========== */
.cta-band {
  background: linear-gradient(120deg, #1D4ED8, #2563EB 55%, #38BDF8);
  color: #fff; padding: 90px 0; text-align: center;
}
.cta-inner h2 { font-size: 34px; font-weight: 800; margin-bottom: 12px; }
.cta-inner > p { opacity: .9; font-size: 16px; margin-bottom: 34px; }
.cta-form { display: flex; gap: 12px; max-width: 520px; margin: 0 auto 16px; }
.cta-form input {
  flex: 1; padding: 14px 18px; border-radius: 10px; border: none;
  font-size: 15px; outline: none; font-family: inherit;
}
.cta-form input::placeholder { color: #9AA5BB; }
.cta-note { font-size: 13px; opacity: .75; }

/* ========== 页脚 ========== */
.footer { background: #0B1426; color: #A5B0C6; }
.footer-inner {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding: 64px 24px 48px;
}
.footer .logo-text { color: #fff; }
.footer-brand p { margin-top: 16px; font-size: 13.5px; line-height: 1.8; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; font-weight: 700; }
.footer-col a { display: block; font-size: 13.5px; padding: 5px 0; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0; font-size: 13px; color: #6B7891; }

/* ========== 滚动动效 ========== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ========== 响应式 ========== */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 60px; }
  .hero { padding: 130px 0 80px; }
  .hero h1 { font-size: 38px; }
  .feature-block { grid-template-columns: 1fr; gap: 36px; margin-bottom: 72px; }
  .feature-block.reverse .feature-copy { order: 1; }
  .feature-block.reverse .feature-visual { order: 2; }
  .case-grid, .price-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .price-card.popular { order: -1; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; flex-direction: column; gap: 0;
    border-bottom: 1px solid var(--border); box-shadow: 0 12px 30px rgba(15,27,51,.1);
    padding: 8px 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 24px; }
  .nav-cta-mobile { display: block; margin: 8px 24px 10px; text-align: center; }
  .nav-actions .btn-ghost, .nav-actions .btn-primary { display: none; }
  .nav-toggle { display: flex; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero { padding: 116px 0 64px; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 15.5px; }
  .hero-proof { gap: 16px; }
  .proof-item strong { font-size: 20px; }
  .float-card { display: none; }
  .mock-row { grid-template-columns: 1.4fr .9fr .7fr; font-size: 11.5px; }
  .mock-row span:nth-child(4) { display: none; }
  .mock-row-head span:nth-child(4) { display: none; }

  .section { padding: 68px 0; }
  .section-head { margin-bottom: 40px; }
  .section-head h2 { font-size: 26px; }
  .feature-copy h3 { font-size: 22px; }
  .feature-visual { padding: 20px; }
  .cta-inner h2 { font-size: 26px; }
  .cta-form { flex-direction: column; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; padding: 48px 24px 36px; }
}