/* ===================== 基础变量 ===================== */
:root{
  --green:#22c55e; --green-deep:#16a34a; --blue:#0ea5e9; --blue-deep:#0369a1;
  --ink:#0f172a; --gray:#5f6b78; --muted:#94a3b8;
  --bg:#ffffff; --soft:#f6faf8; --line:#e6edf2;
  --grad:linear-gradient(120deg,#22c55e,#0ea5e9);
  --shadow-sm:0 2px 10px rgba(15,23,42,.05);
  --shadow:0 14px 40px rgba(2,132,199,.10);
  --radius:18px;
  --font:"Noto Sans SC","Space Grotesk","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --maxw:1160px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
.container{width:min(var(--maxw),92vw);margin-inline:auto;}
.grad{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}

/* ===================== 导航 ===================== */
.nav{position:fixed;inset:0 0 auto 0;z-index:50;transition:.35s;backdrop-filter:blur(0);}
.nav.scrolled{background:rgba(255,255,255,.82);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line);}
.nav-inner{width:min(var(--maxw),92vw);margin-inline:auto;display:flex;align-items:center;justify-content:space-between;height:68px;}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:19px;font-weight:900;box-shadow:var(--shadow-sm);
}
.brand-text{display:flex;flex-direction:column;line-height:1.05;font-size:17px;letter-spacing:.5px;}
.brand-text i{font-style:normal;font-size:10px;letter-spacing:2px;color:var(--muted);font-weight:500;}
.nav-links{display:flex;align-items:center;gap:30px;font-size:15px;color:var(--gray);font-weight:500;}
.nav-links a{transition:color .2s;position:relative;}
.nav-links a:not(.nav-cta):hover{color:var(--green-deep);}
.nav-links a:not(.nav-cta)::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--grad);transition:width .25s;}
.nav-links a:not(.nav-cta):hover::after{width:100%;}
.nav-cta{background:var(--grad);color:#fff!important;padding:9px 20px;border-radius:30px;box-shadow:var(--shadow-sm);}
.nav-cta:hover{box-shadow:0 8px 22px rgba(34,197,94,.30);}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px;}
.nav-toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s;}
.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 ===================== */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;padding:120px 0 60px;overflow:hidden;background:radial-gradient(120% 120% at 80% 0%,#ecfeff 0%,#f6faf8 45%,#fff 100%);}
.hero-bg{position:absolute;inset:0;z-index:0;}
.blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5;}
.b1{width:420px;height:420px;background:#bbf7d0;top:-120px;right:-60px;}
.b2{width:380px;height:380px;background:#bae6fd;bottom:-140px;left:-80px;}
.b3{width:300px;height:300px;background:#a7f3d0;top:40%;left:42%;opacity:.35;}
.grid-dots{position:absolute;inset:0;background-image:radial-gradient(#cbd5e1 1px,transparent 1px);background-size:26px 26px;-webkit-mask-image:radial-gradient(80% 80% at 70% 30%,#000,transparent);mask-image:radial-gradient(80% 80% at 70% 30%,#000,transparent);opacity:.6;}
.hero-inner{position:relative;z-index:1;width:min(var(--maxw),92vw);margin-inline:auto;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--green-deep);background:#dcfce7;padding:7px 16px;border-radius:30px;font-weight:600;margin-bottom:22px;}
.hero-title{font-size:clamp(38px,5.4vw,64px);line-height:1.12;font-weight:900;letter-spacing:-.5px;}
.hero-lead{margin:22px 0 30px;font-size:17px;color:var(--gray);max-width:520px;line-height:1.9;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.btn{padding:14px 28px;border-radius:30px;font-weight:600;font-size:15px;transition:.25s;display:inline-block;cursor:pointer;border:0;}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(34,197,94,.28);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(34,197,94,.36);}
.btn-ghost{border:1.5px solid #cbd5e1;color:var(--ink);background:#fff;}
.btn-ghost:hover{border-color:var(--green);color:var(--green-deep);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--green-deep);margin-top:24px;}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(0,0,0,.15);}
.hero-stats{display:flex;gap:38px;margin-top:44px;}
.hero-stats div{display:flex;flex-direction:column;}
.hero-stats b{font-size:30px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero-stats span{font-size:13px;color:var(--muted);}
.hero-visual{display:grid;place-items:center;}
.hero-art{width:min(420px,90%);filter:drop-shadow(0 24px 50px rgba(2,132,199,.18));animation:float 6s ease-in-out infinite;}
@keyframes float{50%{transform:translateY(-14px);}}
.scroll-cue{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);width:26px;height:42px;border:2px solid #cbd5e1;border-radius:16px;display:grid;justify-items:center;padding-top:8px;z-index:2;}
.scroll-cue span{width:4px;height:8px;border-radius:3px;background:var(--green);animation:cue 1.6s infinite;}
@keyframes cue{0%{opacity:0;transform:translateY(-4px);}50%{opacity:1;}100%{opacity:0;transform:translateY(8px);}}

/* ===================== 通用区块 ===================== */
.section{padding:96px 0;}
.section-soft{background:var(--soft);}
.sec-head{margin-bottom:48px;max-width:680px;}
.sec-head.center{margin-inline:auto;text-align:center;}
.sec-tag{font-size:12px;letter-spacing:3px;font-weight:700;color:var(--green);text-transform:uppercase;}
.sec-tag.light{color:#d1fae5;}
.sec-title{font-size:clamp(28px,3.6vw,40px);font-weight:900;margin:10px 0 12px;letter-spacing:-.3px;}
.sec-title.light{color:#fff;}
.sec-sub{color:var(--gray);font-size:16px;}
.sec-head.center .sec-sub{margin-inline:auto;}

/* ===================== 关于 ===================== */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.about-text p{font-size:16px;color:var(--gray);margin-bottom:16px;line-height:1.95;}
.about-text b{color:var(--green-deep);}
.quote-line{margin-top:20px;padding:16px 22px;background:linear-gradient(135deg,#ecfdf5,#eff6ff);border-left:4px solid var(--green);border-radius:0 14px 14px 0;color:var(--blue-deep);font-style:italic;font-weight:500;}
.map-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm);position:relative;}
.map-svg{width:100%;height:auto;border-radius:12px;}
.map-cap{position:absolute;bottom:26px;left:0;right:0;text-align:center;font-size:13px;color:var(--muted);}

/* ===================== 卡片网格 ===================== */
.card-grid{display:grid;gap:22px;}
.cols-2{grid-template-columns:1fr 1fr;}
.cols-3{grid-template-columns:repeat(3,1fr);}
.cols-4{grid-template-columns:repeat(4,1fr);}
.cols-5{grid-template-columns:repeat(5,1fr);}

/* 特性卡 */
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-sm);transition:.3s;position:relative;overflow:hidden;}
.feat::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .3s;}
.feat:hover{transform:translateY(-6px);box-shadow:var(--shadow);}
.feat:hover::before{transform:scaleX(1);}
.feat-ic{font-size:32px;margin-bottom:12px;}
.feat h3{font-size:18px;margin-bottom:8px;font-weight:700;}
.feat p{font-size:14.5px;color:var(--gray);line-height:1.8;}
.feat.ai{background:linear-gradient(160deg,#fff, #f6fefb);}
.feat b{color:var(--green-deep);}

/* 痛点卡 */
.pain{background:#fff;border:1px solid var(--line);border-left:4px solid #f87171;border-radius:14px;padding:22px 22px;box-shadow:var(--shadow-sm);transition:.3s;}
.pain:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(248,113,113,.14);}
.pain h3{font-size:17px;margin-bottom:8px;color:var(--ink);}
.pain p{font-size:14px;color:var(--gray);line-height:1.8;}

/* 模块卡（产品） */
.mod{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 14px;text-align:center;box-shadow:var(--shadow-sm);transition:.3s;}
.mod:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:transparent;}
.mod-ic{font-size:30px;}
.mod b{display:block;margin-top:10px;font-size:14px;color:var(--ink);}
.mod i{font-style:normal;font-size:12px;color:var(--muted);}

/* ===================== KPI ===================== */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.kpi{text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 18px;box-shadow:var(--shadow-sm);position:relative;}
.kpi svg{width:104px;height:104px;margin:0 auto 8px;}
.kpi b{position:absolute;top:64px;left:0;right:0;font-size:24px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.kpi span{display:block;font-size:14px;color:var(--gray);font-weight:500;}
.note{font-size:13px;color:var(--muted);margin-top:20px;}

/* ===================== 评价 ===================== */
.review{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;box-shadow:var(--shadow-sm);transition:.3s;}
.review:hover{transform:translateY(-5px);box-shadow:var(--shadow);}
.stars{color:#fbbf24;letter-spacing:2px;font-size:18px;margin-bottom:14px;}
.review blockquote{font-size:16px;color:var(--ink);line-height:1.85;font-style:italic;}
.review figcaption{margin-top:16px;font-size:13.5px;color:var(--muted);font-weight:500;}

/* ===================== 联系 ===================== */
.contact-card{display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center;background:var(--grad);border-radius:28px;padding:54px;color:#fff;box-shadow:0 24px 60px rgba(2,132,199,.22);}
.contact-copy p{font-size:17px;opacity:.95;margin-top:8px;}
.contact-list{margin:26px 0 0;display:grid;gap:14px;}
.contact-list div{display:flex;align-items:center;gap:12px;font-size:15.5px;}
.contact-list span{font-size:20px;}
.contact-qr{display:flex;flex-direction:column;align-items:center;gap:12px;justify-self:center;}
.qr-box{width:150px;height:150px;border:2px dashed rgba(255,255,255,.7);border-radius:16px;display:grid;place-items:center;text-align:center;font-size:12px;color:rgba(255,255,255,.85);background:rgba(255,255,255,.12);}
.contact-qr small{font-size:12px;color:rgba(255,255,255,.8);}

/* ===================== 页脚 ===================== */
.footer{background:#0b1220;color:#cbd5e1;padding:40px 0;}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.footer .brand-text,.footer .brand-text i{color:#fff;}
.footer .brand-text i{color:#64748b;}
.footer p{font-size:13px;color:#64748b;}

/* ===================== 滚动揭示动画 ===================== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease;}
.reveal.in{opacity:1;transform:none;}

/* ===================== 响应式 ===================== */
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr;text-align:center;}
  .hero-visual{order:-1;}
  .hero-lead{margin-inline:auto;}
  .hero-actions{justify-content:center;}
  .hero-stats{justify-content:center;}
  .about-grid{grid-template-columns:1fr;}
  .cols-4{grid-template-columns:repeat(2,1fr);}
  .cols-5{grid-template-columns:repeat(3,1fr);}
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .contact-card{grid-template-columns:1fr;padding:38px 28px;}
}
@media (max-width:680px){
  .nav-links{position:fixed;inset:68px 0 auto 0;flex-direction:column;background:#fff;padding:24px;gap:18px;box-shadow:0 14px 30px rgba(0,0,0,.08);transform:translateY(-130%);transition:transform .3s;align-items:stretch;}
  .nav-links.open{transform:none;}
  .nav-toggle{display:flex;}
  .cols-2,.cols-3,.cols-4,.cols-5{grid-template-columns:1fr;}
  .kpi-grid{grid-template-columns:1fr 1fr;}
  .section{padding:64px 0;}
  .hero-stats{gap:24px;}
  .hero-stats b{font-size:24px;}
}