/* ===== 设计变量 ===== */
:root{
  --c-dark:#1B1F24;
  --c-dark2:#2A2F36;
  --c-blue:#1F6FEB;
  --c-green:#00B96B;
  --c-green-hover:#009e5b;
  --c-red:#E5484D;
  --c-bg:#F7F8FA;
  --c-white:#fff;
  --c-text:#1F2329;
  --c-text2:#5A6472;
  --radius:12px;
  --shadow:0 8px 30px rgba(0,0,0,.08);
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"HarmonyOS Sans","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--c-text);line-height:1.6;background:var(--c-white);
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{padding:80px 0}
h1,h2,h3{line-height:1.3;font-weight:700}
h1{font-size:clamp(28px,4vw,52px)}
h2{font-size:clamp(22px,2.6vw,34px);margin-bottom:16px}
.lead{font-size:clamp(15px,1.4vw,18px);color:var(--c-text2)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:8px;font-weight:600;font-size:16px;
  border:1.5px solid transparent;cursor:pointer;transition:.2s ease;
}
.btn-primary{background:var(--c-green);color:#fff}
.btn-primary:hover{background:var(--c-green-hover);transform:translateY(-2px)}
.btn-outline{border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.1);transform:translateY(-2px)}
.btn-ghost{border-color:var(--c-blue);color:var(--c-blue)}
.btn-ghost:hover{background:rgba(31,111,235,.06)}
.btn-lg{padding:16px 36px;font-size:17px}

/* ===== 顶栏 ===== */
header{
  position:sticky;top:0;z-index:100;background:rgba(27,31,36,.95);
  backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.06);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{color:#fff;font-weight:700;font-size:19px;display:flex;align-items:center;gap:10px}
.logo .dot{width:10px;height:10px;border-radius:50%;background:var(--c-green);display:inline-block}
.nav-links{display:flex;gap:26px;list-style:none}
.nav-links a{color:rgba(255,255,255,.82);font-size:15px;transition:.2s}
.nav-links a:hover{color:#fff}
.nav-actions{display:flex;gap:12px;align-items:center}
.nav-actions .btn{padding:9px 18px;font-size:14px}
.burger{display:none;background:none;border:0;color:#fff;font-size:24px;cursor:pointer}

/* ===== Hero ===== */
.hero{
  background:linear-gradient(135deg,#1B1F24 0%,#20262e 60%,#1a2230 100%);
  color:#fff;padding:100px 0 80px;position:relative;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:44px 44px;pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative}
.hero h1{color:#fff;margin-bottom:20px}
.hero .lead{color:rgba(255,255,255,.78);margin-bottom:32px;max-width:560px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:16px}
.hero-note{font-size:13px;color:rgba(255,255,255,.55)}
.hero-visual{
  aspect-ratio:16/11;border-radius:16px;background:linear-gradient(135deg,#2a3340,#1e252e);
  border:1px solid rgba(255,255,255,.1);box-shadow:0 30px 60px rgba(0,0,0,.4);
  position:relative;overflow:hidden;
}
.hero-visual::after{
  content:"产品界面预览（替换为真实截图）";position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.35);
  font-size:14px;
}

/* ===== 信任栏 ===== */
.trust{background:var(--c-dark2);color:#fff;padding:36px 0}
.trust-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.trust-num{font-size:15px;color:rgba(255,255,255,.85)}
.trust-num strong{color:var(--c-green);font-size:22px;margin:0 4px}
.trust-logos{display:flex;gap:14px;flex-wrap:wrap}
.trust-logos span{
  padding:8px 16px;border:1px solid rgba(255,255,255,.15);border-radius:8px;
  font-size:13px;color:rgba(255,255,255,.7);
}

/* ===== 痛点卡片 ===== */
.section-head{text-align:center;max-width:720px;margin:0 auto 48px}
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:#fff;border:1px solid #eceef2;border-radius:var(--radius);
  padding:32px;transition:.25s;box-shadow:0 2px 8px rgba(0,0,0,.02);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#dfe3ea}
.card .pain{color:var(--c-red);font-weight:600;font-size:15px;margin-bottom:10px}
.card .pain-desc{color:var(--c-text2);font-size:14px;margin-bottom:16px}
.card .arrow{color:var(--c-blue);font-size:20px;margin-bottom:12px}
.card h3{font-size:19px;margin-bottom:10px}
.card .gain{color:var(--c-text2);font-size:14px}
.card .more{display:inline-block;margin-top:16px;color:var(--c-blue);font-size:14px;font-weight:600}

/* ===== 界面预览 ===== */
.preview{background:var(--c-bg)}
.tabs{display:flex;gap:8px;justify-content:center;margin-bottom:28px;flex-wrap:wrap}
.tabs button{
  padding:9px 20px;border-radius:999px;border:1px solid #dfe3ea;background:#fff;
  font-size:14px;cursor:pointer;transition:.2s;color:var(--c-text2);
}
.tabs button.active{background:var(--c-dark);color:#fff;border-color:var(--c-dark)}
.mockup{
  aspect-ratio:16/9;border-radius:16px;background:linear-gradient(135deg,#e8ecf3,#f4f6fa);
  border:1px solid #e2e6ee;box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:center;color:#9aa4b2;font-size:15px;
}

/* ===== 功能速览 ===== */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{
  padding:26px;border-radius:var(--radius);background:#fff;border:1px solid #eceef2;transition:.25s;
}
.feature:hover{border-color:var(--c-blue);box-shadow:var(--shadow)}
.feature .ico{
  width:44px;height:44px;border-radius:10px;background:rgba(31,111,235,.1);
  color:var(--c-blue);display:flex;align-items:center;justify-content:center;
  font-weight:700;margin-bottom:14px;
}
.feature h3{font-size:16px;margin-bottom:6px}
.feature p{font-size:14px;color:var(--c-text2)}

/* ===== 部署说明 ===== */
.deploy{background:var(--c-dark);color:#fff}
.deploy h2{color:#fff}
.deploy .lead{color:rgba(255,255,255,.7)}
.deploy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.deploy-card{
  padding:30px;border-radius:var(--radius);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
}
.deploy-card h3{color:#fff;font-size:17px;margin-bottom:10px}
.deploy-card p{color:rgba(255,255,255,.65);font-size:14px}

/* ===== 版本对比表 ===== */
.compare{width:100%;border-collapse:collapse;margin-top:32px;font-size:15px}
.compare th,.compare td{padding:14px 18px;border-bottom:1px solid #eceef2;text-align:left}
.compare th{background:var(--c-bg);font-weight:600}
.compare td.yes{color:var(--c-green);font-weight:600}
.compare td.no{color:#b0b7c2}

/* ===== CTA 带 ===== */
.cta-band{background:linear-gradient(135deg,#1F6FEB,#0f4fc4);color:#fff;text-align:center}
.cta-band h2{color:#fff}
.cta-band .lead{color:rgba(255,255,255,.85);margin-bottom:28px}
.cta-band .btn-primary{background:var(--c-green)}
.cta-band .hero-cta{justify-content:center}

/* ===== 悬浮转化窗 ===== */
.float-cta{
  position:fixed;right:24px;bottom:120px;z-index:90;display:flex;flex-direction:column;gap:10px;
  opacity:0;transform:translateY(10px);transition:.3s;pointer-events:none;
}
.float-cta.show{opacity:1;transform:none;pointer-events:auto}
.float-cta a{
  width:56px;height:56px;border-radius:50%;background:var(--c-green);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;
  text-align:center;box-shadow:var(--shadow);line-height:1.2;
}
.float-cta a.blue{background:var(--c-blue)}

/* ===== 移动端底部条 ===== */
.mobile-bar{display:none}

/* ===== 表单 ===== */
.form-wrap{max-width:560px;margin:0 auto;background:#fff;padding:40px;border-radius:16px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}
.field label .req{color:var(--c-red)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid #dfe3ea;border-radius:8px;
  font-size:15px;font-family:inherit;transition:.2s;
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--c-blue);box-shadow:0 0 0 3px rgba(31,111,235,.12);
}
.form-tip{font-size:13px;color:var(--c-text2);margin-top:16px;text-align:center}
.form-ok{display:none;padding:16px;background:rgba(0,185,107,.1);color:#00804a;border-radius:8px;font-size:14px;margin-top:16px}

/* ===== Footer ===== */
footer{background:var(--c-dark);color:rgba(255,255,255,.7);padding:60px 0 30px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
footer h4{color:#fff;font-size:15px;margin-bottom:14px}
footer ul{list-style:none}
footer li{margin-bottom:10px}
footer a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;text-align:center;font-size:13px;color:rgba(255,255,255,.5)}

/* ===== 动效入场 ===== */
.reveal{opacity:0;transform:translateY(20px);transition:.5s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .cards,.deploy-grid,.features{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  section{padding:56px 0}
  .nav-links,.nav-actions{display:none}
  .burger{display:block}
  .cards,.deploy-grid,.features{grid-template-columns:1fr}
  .compare{display:block;overflow-x:auto;white-space:nowrap}
  .float-cta{display:none}
  .mobile-bar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:95;height:56px;
    background:#fff;border-top:1px solid #eceef2;
  }
  .mobile-bar a{flex:1;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:15px}
  .mobile-bar a:first-child{background:var(--c-green);color:#fff}
  .mobile-bar a:last-child{color:var(--c-blue)}
  .form-wrap{padding:26px 20px}
}

/* C95 footer */
.foot { background: linear-gradient(180deg,#0f3d22,#0a2a17); color: rgba(255,255,255,.72); padding: 28px 16px 22px; text-align: center; font-size: 11px; }
.foot-meta { display: inline-block; margin: 0 auto; }
.foot .line { line-height: 1.8; }
.foot .links { margin-top: 8px; }
.foot .links a { color: rgba(255,255,255,.72); text-decoration: none; }
.foot .links a:hover { color: #fff; }
.foot .sep { margin: 0 8px; opacity: .5; }
.foot .icp { margin-top: 8px; opacity: .85; }
.foot .icp a { color: rgba(255,255,255,.72); text-decoration: none; }
.foot .gongan { margin-left: 12px; display: inline-flex; align-items: center; gap: 4px; }
.foot .gongan img { width: 14px; height: 14px; vertical-align: middle; }