/* ============================================================
   IE14 果然网络 · 统一视觉系统（风格对齐 sq.ie14.com/auth-server）
   深色玻璃拟态 + 青/蓝/紫渐变 + 霓虹标题 + 胶囊标签 + 主题切换
   ============================================================ */
:root{
  --c-cyan:#00D4C8; --c-blue:#5B7CFA; --c-purple:#7C5CFF;
  --bg-0:#0B0E1A; --bg-1:#141829; --bg-2:#1C2138;
  --text-0:#F2F4FA; --text-1:#E6E9F2; --text-2:#A7AEC4; --text-3:#8B93A7; --text-4:#646B85;
  --glass:rgba(28,33,56,.55); --glass-border:rgba(255,255,255,.08);
  --btn-ghost-bg:rgba(255,255,255,.06); --btn-ghost-text:#D7DBE8; --btn-ghost-bd:rgba(255,255,255,.08); --btn-ghost-hover:rgba(255,255,255,.12);
  --bg-grad-1:rgba(124,92,255,.12); --bg-grad-2:rgba(0,212,200,.08);
}
/* 亮色主题（与微信中台 / auth-server 一致，可一键切换） */
html.light{
  --bg-0:#F4F6FA; --bg-1:#EAEEF5; --bg-2:#FFFFFF;
  --text-0:#0B0E1A; --text-1:#1C2138; --text-2:#5B6577; --text-3:#8B93A7; --text-4:#A2A9BC;
  --glass:rgba(255,255,255,.78); --glass-border:rgba(13,18,38,.10);
  --btn-ghost-bg:rgba(13,18,38,.04); --btn-ghost-text:#1C2138; --btn-ghost-bd:rgba(13,18,38,.10); --btn-ghost-hover:rgba(13,18,38,.08);
  --bg-grad-1:rgba(91,124,250,.10); --bg-grad-2:rgba(124,92,255,.07);
}
html.light .glass:hover,
html.light .card:hover{box-shadow:0 16px 50px -18px rgba(13,18,38,.30);}
html.light .plan li,html.light .point{border-color:rgba(13,18,38,.10) !important;}
html.light .feat-ico{background:linear-gradient(135deg,rgba(91,124,250,.14),rgba(124,92,255,.08));}
html.light footer{border-color:rgba(13,18,38,.10);}

*{box-sizing:border-box}
html{scroll-behavior:smooth;}
body{
  margin:0;font-family:system-ui,"Microsoft YaHei","PingFang SC",sans-serif;color:var(--text-1);
  background:radial-gradient(1200px 600px at 80% -10%,var(--bg-grad-1),transparent),
             radial-gradient(900px 500px at -10% 10%,var(--bg-grad-2),transparent),
             var(--bg-0);
  background-attachment:fixed;overflow-x:hidden;line-height:1.6;
}

/* 渐变文字（品牌） */
.neon-text{background:linear-gradient(90deg,var(--c-cyan),var(--c-blue),var(--c-purple));
  -webkit-background-clip:text;background-clip:text;color:transparent;}
.brand-name{font-size:18px;font-weight:800;
  background:linear-gradient(90deg,#5B7CFA,#7C5CFF,#00D4C8);-webkit-background-clip:text;background-clip:text;color:transparent;}

/* 玻璃容器 */
.glass{background:var(--glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid var(--glass-border);border-radius:18px;}
.card{background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--glass-border);border-radius:14px;position:relative;transition:transform .22s cubic-bezier(.4,0,.2,1),box-shadow .22s,border-color .22s;}
.card:hover{transform:translateY(-6px);box-shadow:0 16px 50px -14px rgba(91,124,250,.5);border-color:rgba(124,92,255,.45);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:10px;font-size:15px;font-weight:500;
  text-decoration:none;cursor:pointer;transition:transform .12s,box-shadow .15s,opacity .15s;border:0;}
.btn:hover{transform:translateY(-1px);opacity:.94;}
.btn-primary{background:linear-gradient(135deg,var(--c-blue),var(--c-purple));color:#fff;
  box-shadow:0 8px 22px -8px rgba(91,124,250,.7);}
.btn-primary:hover{box-shadow:0 10px 28px -8px rgba(124,92,255,.5);}
.btn-ghost{background:var(--btn-ghost-bg);color:var(--btn-ghost-text);border:1px solid var(--btn-ghost-bd);}
.btn-ghost:hover{background:var(--btn-ghost-hover);}
.btn-sm{padding:7px 15px;font-size:13px;border-radius:9px;}

/* 胶囊标签 */
.chip,.hero-tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;font-size:12px;
  background:var(--btn-ghost-bg);border:1px solid var(--btn-ghost-bd);color:var(--text-2);}
.tag-line{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;}

/* 小标题 */
.section-title{font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--text-3);font-weight:600;margin:0 0 6px;text-align:left}
.sec-head{border-bottom:1px solid var(--glass-border);padding-bottom:16px;margin-bottom:28px;}
.sec-head h2{margin:0;font-size:26px;font-weight:800;color:var(--text-0);}
.sec-head p{margin:8px 0 0;color:var(--text-2);font-size:14px;}

/* 顶栏 */
header{background:var(--glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--glass-border);position:sticky;top:0;z-index:30;}
header .bar{max-width:1080px;margin:0 auto;padding:0 22px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:nowrap;}
header .bar > a.logo{flex-shrink:0;display:flex;align-items:center;gap:10px;text-decoration:none;}
header .bar > a.logo img{width:32px;height:32px;object-contain;border-radius:8px;}
header nav{flex:1;justify-content:flex-end;min-width:0;display:flex;align-items:center;gap:28px;}
header nav a{color:var(--text-2);text-decoration:none;font-size:14px;transition:color .15s;}
header nav a:hover{color:var(--text-0);}
.theme-toggle{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:999px;
  background:var(--btn-ghost-bg);border:1px solid var(--glass-border);color:var(--text-2);font-size:13px;cursor:pointer;transition:background .15s,color .15s;}
.theme-toggle:hover{background:var(--btn-ghost-hover);}
#mobileNav{display:none;border-top:1px solid var(--glass-border);padding:10px 22px;flex-direction:column;gap:2px;}
#mobileNav a{padding:10px 0;font-size:14px;color:var(--text-1);text-decoration:none;border-bottom:1px solid var(--glass-border);}
#mobileNav a:last-child{border-bottom:0;}

/* 英雄区 */
.hero{max-width:1080px;margin:0 auto;padding:64px 22px 40px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.hero-left{max-width:540px;}
.hero h1{font-size:40px;margin:0 0 16px;color:var(--text-0);line-height:1.22;font-weight:800;}
.hero p{font-size:16px;color:var(--text-2);margin:0 0 24px;line-height:1.75;}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;}
.hero-right{justify-self:end;width:100%;max-width:440px;}
.hero-card{background:var(--glass);border:1px solid var(--glass-border);border-radius:18px;padding:24px;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);}
.hero-card-title{font-size:15px;font-weight:700;color:var(--text-0);margin:0 0 18px;}
.hero-step{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border-radius:12px;
  background:rgba(91,124,250,.08);border:1px solid rgba(91,124,250,.12);margin-bottom:10px;}
.hero-step:last-child{margin-bottom:0;}
.hero-step-num{flex:none;width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--c-blue),var(--c-purple));}
.hero-step-title{font-size:14px;font-weight:600;color:var(--text-0);margin:0 0 2px;}
.hero-step-desc{font-size:13px;color:var(--text-3);margin:0;line-height:1.5;}
.hero-arrow{text-align:center;color:var(--text-4);font-size:18px;line-height:1;margin:-2px 0 6px;}

/* 区块容器 */
.wrap{max-width:1080px;margin:0 auto;padding:0 22px;}
.section{padding:48px 0;}
.section.alt{background:var(--bg-1);}

/* 网格 */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
@media(max-width:1024px) and (min-width:641px){
  .hero{grid-template-columns:1fr;gap:34px;}
  .hero-left{max-width:none;}
  .hero-right{justify-self:stretch;max-width:560px;}
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}
  .hero h1{font-size:34px;}
}
@media(max-width:640px){
  .grid-3,.grid-4{grid-template-columns:1fr;}
  .hero{grid-template-columns:1fr;padding:44px 14px 30px;gap:30px;}
  .hero-left{max-width:none;}
  .hero-right{justify-self:stretch;max-width:none;}
  .hero h1{font-size:28px;}
  .hero p{font-size:15px;}
  .sec-head h2{font-size:22px;}
}

/* 卡片内容 */
.card{padding:26px 22px;}
.card h3{margin:0 0 6px;font-size:18px;font-weight:700;
  background:linear-gradient(90deg,var(--c-blue),var(--c-purple));-webkit-background-clip:text;background-clip:text;color:transparent;}
.card .sub{color:var(--text-3);font-size:13px;margin:0 0 12px;}
.card p.desc{margin:0;color:var(--text-2);font-size:13.5px;line-height:1.6;}
.card .more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;color:var(--c-blue);font-weight:600;font-size:14px;text-decoration:none;}
.card .more:hover{color:var(--c-purple);}
.point{border-top:1px solid var(--glass-border);padding-top:10px;margin-top:10px;font-size:13.5px;color:var(--text-2);}
.point:first-child{border-top:0;padding-top:0;margin-top:0;}

/* 特性卡（图标在上，居中） */
.feat{background:var(--glass);border:1px solid var(--glass-border);border-radius:14px;padding:26px 18px;backdrop-filter:blur(14px);
  text-align:center;transition:transform .22s,border-color .22s,box-shadow .22s;}
.feat:hover{transform:translateY(-6px);border-color:rgba(124,92,255,.45);box-shadow:0 16px 50px -14px rgba(91,124,250,.5);}
.feat-ico{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin:0 auto 14px;
  background:linear-gradient(135deg,rgba(91,124,250,.22),rgba(124,92,255,.12));color:#A9B6FF;font-size:18px;}
.feat h3{margin:0 0 6px;font-size:17px;font-weight:700;color:var(--text-0);}
.feat p{margin:0;color:var(--text-2);font-size:13px;line-height:1.55;}

/* 标签云 */
.tagcloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.tagcloud span{padding:8px 14px;border-radius:10px;font-size:13px;background:var(--btn-ghost-bg);border:1px solid var(--glass-border);color:var(--text-2);}

/* CTA 区 */
.cta-band{background:var(--glass);border:1px solid var(--glass-border);border-radius:18px;padding:40px 28px;text-align:center;margin-top:30px;}
.cta-band h2{margin:0 0 10px;font-size:24px;color:var(--text-0);}
.cta-band p{margin:0 auto 22px;color:var(--text-2);max-width:560px;font-size:14px;}

/* 引导条 */
.lead-row{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:30px;padding:22px 24px;border-radius:16px;
  background:var(--glass);border:1px solid var(--glass-border);}
.lead-row .ico{width:52px;height:52px;flex:none;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px;
  color:var(--c-cyan);background:linear-gradient(135deg,rgba(91,124,250,.18),rgba(0,212,200,.10));}
.lead-row .txt{flex:1;min-width:200px;}
.lead-row .txt h3{margin:0 0 4px;font-size:17px;color:var(--text-0);}
.lead-row .txt p{margin:0;color:var(--text-2);font-size:13.5px;}

/* 页脚 */
.site-footer{margin-top:40px;padding:34px 0;background:var(--glass);border-top:1px solid var(--glass-border);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);color:var(--text-2);}
.foot-inner{max-width:1080px;margin:0 auto;padding:0 24px;display:flex;flex-wrap:wrap;gap:28px;align-items:flex-start;}
.foot-brand{flex:0 0 260px;min-width:200px;text-align:left;}
.foot-brand p{font-size:13px;line-height:1.6;max-width:320px;color:var(--text-3);margin:10px 0 0;}
.foot-col{flex:1;min-width:200px;text-align:left;}
.foot-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;justify-content:flex-start;}
.foot-pill{display:inline-flex;align-items:center;justify-content:center;height:30px;padding:0 14px;border-radius:999px;font-size:12.5px;
  background:var(--btn-ghost-bg);border:1px solid var(--glass-border);color:var(--text-2);text-decoration:none;transition:.2s;}
.foot-pill:hover{color:var(--text-0);border-color:var(--c-blue);background:rgba(91,124,250,.12);}
.foot-meta{font-size:12px;color:var(--text-4);margin-top:12px;text-align:left;}
@media(max-width:720px){.foot-brand{flex-basis:100%;}}