/* ============================================================
   三岁CRM 官网 — 多页版共享设计系统
   风格：大厂官网（Apple / Stripe 式）+ iOS 原生质感
   ============================================================ */

:root {
  --bg: #F5F5F7;
  --bg2: #EDEFF6;
  --card: #FFFFFF;
  --text: #1D1D1F;
  --text2: #6E6E73;
  --text3: #A1A1A6;
  --accent: #00B8D9;
  --accent2: #3D7BFF;
  --accent3: #FF8A3D;
  --success: #34C759;
  --warn: #FF9F0A;
  --grad: linear-gradient(135deg, #00B8D9 0%, #3D7BFF 48%, #FF8A3D 100%);
  --grad-soft: linear-gradient(135deg, rgba(0,184,217,.12) 0%, rgba(255,138,61,.12) 100%);
  --dark: #0B0F1A;
  --dark2: #101A2E;
  --dark3: #16223E;
  --line: rgba(29, 29, 31, .08);
  --radius: 22px;
  --radius-sm: 14px;
  --shadow: 0 8px 30px rgba(29, 29, 31, .06);
  --shadow-lg: 0 24px 70px rgba(29, 29, 31, .12);
  --shadow-glow: 0 24px 70px rgba(255, 138, 61, .28);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --nav-h: 58px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
::selection { background: rgba(255, 138, 61, .25); }
.container { max-width: 1160px; margin: 0 auto; padding: 0 28px; }

/* ---------------- 顶部导航 ---------------- */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--nav-h);
  background: rgba(255,255,255,.66);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border-bottom: 1px solid rgba(29,29,31,.06);
  transition: background .4s;
}
nav.scrolled { background: rgba(255,255,255,.9); }
.nav-inner {
  max-width: 1160px; margin: 0 auto; padding: 0 28px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 17px; letter-spacing: -.01em; }
.logo-img {
  width: 31px; height: 31px; border-radius: 9px; object-fit: cover; flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(0,184,217,.35);
}
.foot-brand .logo-img { width: 40px; height: 40px; border-radius: 11px; margin-bottom: 16px; box-shadow: 0 8px 22px rgba(0,184,217,.4); }
.foot-brand .logo-img--lockup { width: auto; height: 40px; border-radius: 0; box-shadow: none; margin-bottom: 16px; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  color: var(--text2); font-size: 14px; font-weight: 500;
  padding: 7px 14px; border-radius: 100px; transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: rgba(29,29,31,.05); }
.nav-links a.active { color: var(--text); font-weight: 700; }
.nav-right { display: flex; align-items: center; gap: 14px; }
.nav-cta {
  background: var(--grad); color: #fff; padding: 8px 20px; border-radius: 100px;
  font-size: 14px; font-weight: 600; box-shadow: 0 4px 16px rgba(255,138,61,.32);
  transition: transform .25s, box-shadow .25s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(255,138,61,.44); }
.nav-burger { display: none; width: 40px; height: 40px; border: none; background: none; cursor: pointer; border-radius: 10px; }
.nav-burger span { display: block; width: 18px; height: 2px; background: var(--text); margin: 4px auto; border-radius: 2px; transition: .3s; }
.nav-burger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-menu {
  display: none; position: fixed; top: var(--nav-h); left: 0; right: 0; z-index: 199;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--line);
  padding: 12px 28px 22px;
}
.mobile-menu.show { display: block; }
.mobile-menu a { display: block; padding: 13px 8px; font-size: 16px; font-weight: 600; color: var(--text); border-bottom: 1px solid var(--line); }
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a.active { color: var(--accent); }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 15px 32px; border-radius: 100px; font-size: 16px; font-weight: 600;
  border: none; cursor: pointer; white-space: nowrap;
  transition: transform .25s, box-shadow .25s, background .25s, border-color .25s;
}
.btn .ico { width: 20px; height: 20px; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 14px 40px rgba(255,138,61,.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 22px 56px rgba(255,138,61,.46); }
.btn-dark { background: var(--dark); color: #fff; }
.btn-dark:hover { transform: translateY(-2px); box-shadow: 0 18px 44px rgba(11,15,26,.3); }
.btn-ghost { background: rgba(0,184,217,.1); color: var(--accent); }
.btn-ghost:hover { background: rgba(0,184,217,.16); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--text); border: 1.5px solid rgba(29,29,31,.2); }
.btn-outline:hover { border-color: var(--text); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn-lg { padding: 18px 40px; font-size: 17px; }
.btn-block { width: 100%; }

/* ---------------- 通用区块 ---------------- */
section { padding: 104px 0; }
.sec-head { text-align: center; max-width: 680px; margin: 0 auto 64px; }
.sec-eyebrow {
  display: inline-block; color: var(--accent); font-size: 13px; font-weight: 700;
  letter-spacing: .12em; text-transform: uppercase; margin-bottom: 16px;
}
.sec-title { font-size: clamp(30px, 3.8vw, 44px); font-weight: 800; letter-spacing: -.02em; line-height: 1.18; margin-bottom: 18px; }
.sec-sub { color: var(--text2); font-size: 17px; }
.sec-title .grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* 区块内页头（内页通用） */
.page-hero { padding: 148px 0 76px; position: relative; overflow: hidden; background: var(--bg); }
.page-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(900px 400px at 82% -10%, rgba(0,184,217,.1), transparent 60%),
    radial-gradient(700px 360px at 10% 0%, rgba(168,85,247,.1), transparent 55%);
}
.page-hero .container { position: relative; z-index: 2; text-align: center; max-width: 780px; }
.page-hero h1 { font-size: clamp(34px, 4.6vw, 54px); font-weight: 800; letter-spacing: -.025em; line-height: 1.12; margin-bottom: 18px; }
.page-hero h1 .grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.page-hero p { color: var(--text2); font-size: 17px; max-width: 560px; margin: 0 auto; }
.crumbs { display: flex; justify-content: center; align-items: center; gap: 8px; font-size: 13px; color: var(--text3); margin-bottom: 22px; }
.crumbs a { color: var(--text2); transition: color .2s; }
.crumbs a:hover { color: var(--text); }
.crumbs .sep { opacity: .5; }

/* ---------------- 卡片 / 网格 ---------------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.card {
  background: var(--card); border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: var(--shadow); padding: 34px 30px; position: relative; overflow: hidden;
  transition: transform .35s, box-shadow .35s;
}
.card:hover { transform: translateY(-7px); box-shadow: 0 22px 60px rgba(29,29,31,.1); }
.card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad); opacity: 0; transition: opacity .35s;
}
.card:hover::before { opacity: 1; }

/* 图标 */
.ico-box {
  width: 58px; height: 58px; border-radius: 17px; margin-bottom: 20px;
  background: var(--grad-soft); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  transition: transform .35s;
}
.card:hover .ico-box, .feat:hover .ico-box { transform: scale(1.08) rotate(-4deg); }
.ico-box svg { width: 29px; height: 29px; }
.ico-box.purple { background: linear-gradient(135deg, rgba(255,138,61,.12), rgba(168,85,247,.12)); color: var(--accent2); }
.ico-box.green { background: linear-gradient(135deg, rgba(52,199,89,.12), rgba(52,199,89,.08)); color: var(--success); }
.ico-box.orange { background: linear-gradient(135deg, rgba(255,159,10,.14), rgba(255,149,0,.08)); color: #FF9500; }
.ico-box.blue { background: var(--grad-soft); color: var(--accent); }

/* ---------------- 应用窗口 Mockup ---------------- */
.mockup {
  position: relative; border-radius: 22px; overflow: hidden;
  background: #131A2C; border: 1px solid rgba(255,255,255,.1);
  box-shadow: 0 40px 100px rgba(11,15,26,.35);
}
.mockup-bar { height: 38px; background: #171F33; display: flex; align-items: center; padding: 0 16px; gap: 8px; border-bottom: 1px solid rgba(255,255,255,.06); }
.mockup-bar .m-dot { width: 12px; height: 12px; border-radius: 50%; }
.mockup-bar .m-dot:nth-child(1) { background: #FF5F57; }
.mockup-bar .m-dot:nth-child(2) { background: #FEBC2E; }
.mockup-bar .m-dot:nth-child(3) { background: #28C840; }
.mockup-bar .m-title { margin-left: 12px; font-size: 12px; color: rgba(255,255,255,.4); }

/* ---------------- 滚动显现 ---------------- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }

/* ---------------- 页脚 ---------------- */
footer { background: var(--dark); color: #9AA3B2; padding: 70px 0 40px; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 44px; margin-bottom: 50px; }
.foot-brand .logo-mark { width: 38px; height: 38px; border-radius: 11px; margin-bottom: 18px; }
.foot-brand .logo-mark .lm-bar { width: 18px; height: 4.2px; }
.foot-brand .logo-mark .lm-bar--mid { width: 13px; }
.foot-brand h3 { color: #fff; font-size: 17px; margin-bottom: 8px; }
.foot-brand p { font-size: 13px; max-width: 300px; color: #6E7686; line-height: 1.7; }
.foot-col h4 { color: #fff; font-size: 14px; font-weight: 700; margin-bottom: 18px; }
.foot-col a, .foot-col div { display: block; color: #9AA3B2; font-size: 13px; margin-bottom: 11px; transition: color .2s; }
.foot-col a:hover { color: #fff; }
.foot-bottom { padding-top: 26px; border-top: 1px solid rgba(255,255,255,.08); font-size: 12.5px; text-align: center; color: #5C6472; }
.foot-bottom .ver-chip { display: inline-block; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); padding: 3px 12px; border-radius: 100px; margin-left: 8px; font-weight: 600; color: #C7CDDB; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .nav-burger { display: block; }
  .grid-2 { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 620px) {
  section { padding: 76px 0; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 26px; }
  .page-hero { padding: 124px 0 56px; }
  .btn { width: 100%; justify-content: center; }
  .btn + .btn { margin-top: 12px; }
}

/* ---------------- 浮动微信联系（全站） ---------------- */
.wx-float {
  position: fixed; right: 26px; bottom: 26px; z-index: 400;
  width: 60px; height: 60px; border-radius: 50%;
  background: linear-gradient(135deg, #07C160, #06AD56);
  display: flex; align-items: center; justify-content: center;
  color: #fff; cursor: pointer;
  box-shadow: 0 14px 34px rgba(7,193,96,.42);
  transition: transform .25s, box-shadow .25s;
  animation: wxPulse 3.2s ease-in-out infinite;
}
.wx-float:hover, .wx-float.open { transform: translateY(-3px); box-shadow: 0 20px 44px rgba(7,193,96,.52); animation-play-state: paused; }
@keyframes wxPulse { 0%,100% { box-shadow: 0 14px 34px rgba(7,193,96,.42); } 50% { box-shadow: 0 14px 46px rgba(7,193,96,.62); } }
.wx-float > svg { width: 30px; height: 30px; }
.wx-float .wf-pop {
  position: absolute; right: 74px; bottom: 0;
  width: 252px; background: #fff; border-radius: 20px;
  padding: 20px; text-align: center;
  box-shadow: 0 24px 70px rgba(29,29,31,.2);
  border: 1px solid rgba(29,29,31,.08);
  opacity: 0; pointer-events: none; transform: translateY(10px) scale(.96);
  transition: opacity .28s, transform .28s;
}
.wx-float:hover .wf-pop, .wx-float.open .wf-pop { opacity: 1; pointer-events: auto; transform: translateY(0) scale(1); }
.wf-pop .wf-title { font-size: 15px; font-weight: 800; color: var(--text); margin-bottom: 4px; }
.wf-pop .wf-sub { font-size: 12px; color: var(--text3); margin-bottom: 12px; }
.wf-pop img { width: 128px; height: 128px; border-radius: 12px; margin: 0 auto 10px; display: block; border: 1px solid var(--line); }
.wf-pop .wf-id { display: inline-block; font-size: 13px; font-weight: 700; color: var(--accent2); background: var(--grad-soft); border-radius: 100px; padding: 6px 18px; }
@media (max-width: 620px) {
  .wx-float { right: 16px; bottom: 16px; width: 54px; height: 54px; }
  .wx-float > svg { width: 27px; height: 27px; }
  .wx-float .wf-pop { right: 66px; width: 228px; }
}