/* 北极熊CRM 介绍站 — 现代/温暖/珊瑚红品牌 */
:root{
  --coral:#F2553D;
  --coral-d:#DB4429;
  --coral-soft:#FDEDE9;
  --cream:#FBF7F1;
  --cream-2:#F5EEE4;
  --ink:#1B1B1D;
  --ink-2:#4A4A4F;
  --muted:#8A857D;
  --line:#EBE4D9;
  --white:#ffffff;
  --shadow:0 10px 40px rgba(27,27,29,.06);
  --shadow-lg:0 24px 70px rgba(27,27,29,.10);
  --radius:20px;
  --radius-sm:12px;
  --maxw:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  color:var(--ink);
  background:var(--cream);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
section{position:relative}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;font-weight:600;cursor:pointer;border:none;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--coral);color:#fff;box-shadow:0 8px 24px rgba(242,85,61,.32)}
.btn-primary:hover{background:var(--coral-d);transform:translateY(-2px);box-shadow:0 12px 30px rgba(242,85,61,.40)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--coral);color:var(--coral);transform:translateY(-2px)}
.btn-sm{padding:9px 20px;font-size:14px}
.btn-lg{padding:15px 34px;font-size:16px}

/* 顶栏 */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.4) blur(12px);
  background:rgba(251,247,241,.82);border-bottom:1px solid transparent;transition:border-color .2s, box-shadow .2s}
.nav.scrolled{border-color:var(--line);box-shadow:0 4px 20px rgba(27,27,29,.04)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px}
.brand-logo{width:32px;height:32px;border-radius:9px}
.nav-links{display:flex;gap:28px;margin-left:auto;font-size:15px;color:var(--ink-2)}
.nav-links a{position:relative;font-weight:500;transition:color .15s}
.nav-links a:hover{color:var(--coral)}
.nav .btn-primary{margin-left:8px}

/* 首屏 */
.hero{max-width:var(--maxw);margin:0 auto;padding:88px 24px 40px;text-align:center;overflow:hidden}
.hero-glow{position:absolute;top:-120px;left:50%;transform:translateX(-50%);
  width:680px;height:680px;background:radial-gradient(circle,rgba(242,85,61,.16),transparent 62%);
  filter:blur(20px);z-index:0;pointer-events:none}
.hero-inner{position:relative;z-index:1;max-width:820px;margin:0 auto}
.hero-badge{display:inline-block;background:var(--coral-soft);color:var(--coral-d);
  padding:7px 16px;border-radius:999px;font-size:14px;font-weight:600;margin-bottom:24px}
.hero-title{font-size:clamp(34px,6vw,60px);line-height:1.12;font-weight:850;letter-spacing:-.5px}
.hero-title .accent{color:var(--coral)}
.hero-sub{margin:22px auto 0;font-size:clamp(16px,2.4vw,20px);color:var(--ink-2);max-width:620px}
.hero-actions{margin-top:34px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-note{margin-top:20px;font-size:13.5px;color:var(--muted);letter-spacing:.2px}
.hero-stats{position:relative;z-index:1;max-width:560px;margin:56px auto 0;
  display:flex;align-items:center;justify-content:center;gap:8px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 20px;box-shadow:var(--shadow)}
.hero-stats .stat{flex:1;text-align:center}
.hero-stats .stat b{display:block;font-size:30px;font-weight:850;color:var(--coral)}
.hero-stats .stat span{font-size:13.5px;color:var(--muted)}
.stat-sep{width:1px;height:38px;background:var(--line)}

/* 一句话价值 */
.pitch{max-width:820px;margin:70px auto;padding:0 24px;text-align:center}
.pitch p{font-size:clamp(20px,3.2vw,28px);font-weight:700;line-height:1.5;color:var(--ink)}
.pitch em{color:var(--coral);font-style:normal}

/* section 通用 */
.section-head{text-align:center;max-width:720px;margin:0 auto 48px}
.eyebrow{display:inline-block;font-size:13.5px;font-weight:700;letter-spacing:2px;
  text-transform:uppercase;color:var(--coral);margin-bottom:14px}
.eyebrow.light{color:#ffd9cf}
.section-head h2{font-size:clamp(26px,4vw,40px);font-weight:820;line-height:1.2;letter-spacing:-.4px}

/* 核心能力 */
.features{max-width:var(--maxw);margin:0 auto;padding:40px 24px 70px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.fcard{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:32px 28px;box-shadow:var(--shadow);transition:transform .2s, box-shadow .2s;position:relative}
.fcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.fic{font-size:34px;margin-bottom:16px;line-height:1}
.fcard h3{font-size:19px;font-weight:750;margin-bottom:10px}
.fcard p{font-size:15px;color:var(--ink-2);line-height:1.7}
.fcard b{color:var(--ink);font-weight:700}
.fcard-hl{background:linear-gradient(160deg,#fff, #FFF6F3);border-color:#F6D3C8}
.fcard .tag{display:inline-block;margin-top:16px;background:var(--coral);color:#fff;
  font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:999px}
.fcard-cta{background:var(--ink);color:#fff;display:flex;flex-direction:column;justify-content:center}
.fcard-cta h3{color:#fff}
.fcard-cta p{color:#c9c7c9;margin-bottom:18px}

/* 为什么选它 */
.why{background:var(--cream-2);padding:80px 24px}
.why-rows{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:8px}
.why-row{display:flex;gap:26px;align-items:flex-start;padding:26px;border-radius:var(--radius);
  transition:background .2s}
.why-row:hover{background:var(--white);box-shadow:var(--shadow)}
.why-num{font-size:34px;font-weight:850;color:var(--coral);opacity:.85;min-width:56px;line-height:1}
.why-txt h4{font-size:20px;font-weight:750;margin-bottom:8px}
.why-txt p{font-size:15.5px;color:var(--ink-2)}

/* 数据安全 */
.security{background:var(--ink);color:#fff;padding:88px 24px}
.security-inner{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1.1fr .9fr;
  gap:56px;align-items:center}
.security-txt h2{font-size:clamp(26px,4vw,38px);font-weight:820;line-height:1.2;margin-bottom:18px}
.security-txt p{font-size:16px;color:#c9c7c9;line-height:1.75;margin-bottom:24px}
.security-txt b{color:#fff}
.check{list-style:none;display:flex;flex-direction:column;gap:13px}
.check li{position:relative;padding-left:30px;font-size:15.5px;color:#e6e4e6}
.check li::before{content:"✓";position:absolute;left:0;top:0;width:20px;height:20px;
  background:var(--coral);color:#fff;border-radius:50%;font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center}
.security-card{background:#26262a;border:1px solid #333;border-radius:var(--radius);padding:30px}
.sc-badge{font-size:32px;margin-bottom:16px}
.sc-line{display:flex;justify-content:space-between;align-items:center;padding:14px 0;
  border-bottom:1px solid #333;font-size:15.5px;color:#e6e4e6}
.sc-line b{font-size:13px;font-weight:700;padding:4px 12px;border-radius:999px}
.sc-line b.local{background:rgba(242,85,61,.18);color:#ff8a72}
.sc-line b.cloud{background:rgba(255,255,255,.1);color:#bbb}
.sc-foot{margin-top:18px;font-size:14px;color:#9a979b;line-height:1.6}

/* 下载 */
.download{padding:96px 24px}
.download-inner{max-width:720px;margin:0 auto;text-align:center;
  background:linear-gradient(165deg,#fff,#FFF4F0);border:1px solid #F6D3C8;
  border-radius:28px;padding:56px 40px;box-shadow:var(--shadow-lg)}
.dl-logo{width:76px;height:76px;border-radius:20px;margin-bottom:22px;box-shadow:0 10px 30px rgba(242,85,61,.25)}
.download-inner h2{font-size:clamp(24px,4vw,34px);font-weight:820;margin-bottom:10px}
.download-inner>p{color:var(--ink-2);font-size:16px}
.dl-actions{margin:28px 0 12px}
.dl-note{font-size:13.5px;color:var(--muted);max-width:440px;margin:12px auto 0}

/* 页脚 */
.footer{background:var(--cream-2);border-top:1px solid var(--line);padding:48px 24px}
.footer-inner{max-width:var(--maxw);margin:0 auto;text-align:center}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px}
.footer-brand img{width:30px;height:30px;border-radius:8px}
.footer-slogan{margin:12px 0 6px;color:var(--ink-2);font-size:15px}
.footer-copy{color:var(--muted);font-size:13.5px}

/* 响应式 */
@media (max-width:900px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .security-inner{grid-template-columns:1fr;gap:36px}
}
@media (max-width:600px){
  .nav-links{display:none}
  .feature-grid{grid-template-columns:1fr}
  .hero{padding-top:56px}
  .why-row{padding:18px}
  .why-num{min-width:44px;font-size:28px}
  .download-inner{padding:40px 24px}
}