/* 股哥官网 - 主样式表
   部署路径：https://aisocc.cn/official/
   资源引用均为相对路径，可直接放入服务器子目录访问 */

:root{
  --brand:#2b6cff;
  --brand-2:#7c5cff;
  --accent:#ff4d4f;
  --ink:#0f172a;
  --muted:#5b6b82;
  --line:#e6ebf3;
  --bg:#ffffff;
  --bg-soft:#f6f9ff;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 2px 10px rgba(15,23,42,.06);
  --shadow-md:0 12px 34px rgba(20,40,90,.10);
  --shadow-lg:0 26px 60px rgba(20,40,90,.16);
  --container:1120px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{line-height:1.25;margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:999px;padding:12px 22px;
  font-size:15px;font-weight:600;cursor:pointer;transition:.2s;white-space:nowrap;
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-lg{padding:15px 28px;font-size:16px}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 24px rgba(43,108,255,.30)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(43,108,255,.40)}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.18)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{transform:translateY(-2px)}
.btn-outline-light{border-color:rgba(255,255,255,.45);color:#fff}
.is-disabled{opacity:.55;cursor:not-allowed}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;transition:.25s;background:transparent}
.site-header.scrolled{background:rgba(255,255,255,.86);backdrop-filter:blur(12px);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{display:inline-flex}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.5px}
.brand-text small{display:block;font-size:10px;letter-spacing:3px;color:var(--muted);font-weight:600;margin-top:-2px}
.site-header.scrolled .brand-text{color:var(--ink)}
.site-header:not(.scrolled) .brand-text{color:#fff}
.site-header:not(.scrolled) .brand-text small{color:rgba(255,255,255,.7)}

.nav{display:flex;align-items:center;gap:26px}
.nav a{font-size:15px;font-weight:600;transition:.2s}
.site-header:not(.scrolled) .nav a:not(.nav-cta){color:rgba(255,255,255,.9)}
.site-header:not(.scrolled) .nav a:not(.nav-cta):hover{color:#fff}
.nav a:not(.nav-cta):hover{color:var(--brand)}
.site-header:not(.scrolled) .brand-text,.site-header.scrolled .brand-text{color:var(--ink)}
.site-header:not(.scrolled) .brand-text{color:#fff}
.nav-cta{color:#fff}

.nav-toggle{display:none;width:42px;height:42px;border:0;background:transparent;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:0}
.nav-toggle span{display:block;height:2px;width:22px;margin:0 auto;background:#fff;border-radius:2px;transition:.25s}
.site-header.scrolled .nav-toggle span{background:var(--ink)}

/* Hero */
.hero{position:relative;padding:150px 0 90px;overflow:hidden;background:#0a1024;color:#fff}
.hero-bg{
  position:absolute;inset:0;
  background:
    radial-gradient(900px 500px at 12% -10%,rgba(43,108,255,.55),transparent 60%),
    radial-gradient(800px 480px at 92% 8%,rgba(124,92,255,.50),transparent 60%),
    linear-gradient(180deg,#0a1024 0%,#0d1730 60%,#0f1c3a 100%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(700px 420px at 50% 30%,#000,transparent 78%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.pill{display:inline-block;padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);font-size:13px;font-weight:600;color:#dbe6ff;letter-spacing:.5px}
.hero-copy h1{font-size:44px;font-weight:800;margin:18px 0 16px;letter-spacing:.5px}
.hero-copy h1 .dot{color:var(--brand-2)}
.lead{font-size:18px;color:rgba(226,235,255,.82);max-width:560px}
.hero-cta{display:flex;gap:14px;margin:30px 0 34px;flex-wrap:wrap}
.hero-stats{display:flex;gap:38px;border-top:1px solid rgba(255,255,255,.14);padding-top:24px}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:26px;font-weight:800}
.hero-stats span{font-size:13px;color:rgba(226,235,255,.66)}

/* Phone mockup */
.hero-visual{position:relative;display:flex;justify-content:center}
.hero-glow{position:absolute;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(43,108,255,.45),transparent 70%);filter:blur(10px);z-index:0}
.phone{position:relative;z-index:1;width:290px;height:590px;border-radius:42px;padding:12px;background:#0b1428;border:1px solid rgba(255,255,255,.16);box-shadow:var(--shadow-lg),inset 0 0 0 2px rgba(255,255,255,.04);transform:rotate(-2deg)}
.phone-notch{position:absolute;top:20px;left:50%;transform:translateX(-50%);width:96px;height:22px;border-radius:999px;background:#0b1428;z-index:3}
.phone-screen{background:#f6f9ff;height:100%;border-radius:32px;padding:44px 18px 18px;color:var(--ink);overflow:hidden}
.pf-head{display:flex;justify-content:space-between;align-items:center;font-weight:700;margin-bottom:14px}
.pf-badge{font-size:11px;background:#e6f0ff;color:var(--brand);padding:3px 9px;border-radius:999px;font-weight:700}
.pf-row{display:flex;justify-content:space-between;align-items:center;background:#fff;border-radius:14px;padding:13px 14px;margin-bottom:10px;box-shadow:var(--shadow-sm)}
.pf-row b{display:block;font-size:14px}
.pf-row i{font-size:11px;color:var(--muted);font-style:normal}
.pf-row em{font-style:normal;font-weight:800;font-size:15px}
.em.up,.up{color:#e8402a}
.down{color:#12a150}
.pf-alert{margin-top:6px;background:linear-gradient(135deg,#2b6cff,#7c5cff);color:#fff;border-radius:14px;padding:13px 14px;font-size:13px;font-weight:600;display:flex;align-items:center;gap:8px}
.pf-dot{width:8px;height:8px;border-radius:50%;background:#ffd166;box-shadow:0 0 0 4px rgba(255,209,102,.25)}

/* Section base */
.section{padding:92px 0}
.section-head{max-width:720px;margin:0 auto 50px;text-align:center}
.section-head h2{font-size:34px;font-weight:800;margin-bottom:16px}
.section-head p{color:var(--muted);font-size:17px}
.eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:2px;color:var(--brand);text-transform:uppercase;margin-bottom:12px}
.eyebrow.light{color:#bcd0ff}

/* Positioning */
.positioning{background:var(--bg)}
.position-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.position-card{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px 28px;transition:.25s}
.position-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);background:#fff}
.pc-ico{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;margin-bottom:18px}
.position-card h3{font-size:20px;margin-bottom:10px}
.position-card p{color:var(--muted);font-size:15px}

/* Features */
.features{background:linear-gradient(180deg,#f6f9ff,#ffffff)}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:.25s;position:relative;overflow:hidden}
.feature-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c,var(--brand));transform:scaleX(0);transform-origin:left;transition:.3s}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:transparent}
.feature-card:hover::before{transform:scaleX(1)}
.fc-ico{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:color-mix(in srgb,var(--c) 12%,#fff);color:var(--c);margin-bottom:16px}
.feature-card h3{font-size:18px;margin-bottom:9px}
.feature-card p{color:var(--muted);font-size:14.5px}

/* Showcase */
.showcase{background:#fff}
.showcase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;max-width:900px;margin:0 auto}
.shot{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm);transition:.25s}
.shot:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.shot-bar{height:34px;background:linear-gradient(135deg,var(--brand),var(--brand-2));position:relative}
.shot-bar::after{content:"";position:absolute;top:50%;left:16px;transform:translateY(-50%);width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.75);box-shadow:14px 0 0 rgba(255,255,255,.55),28px 0 0 rgba(255,255,255,.35)}
.shot-body{padding:20px;display:flex;flex-direction:column;gap:12px;min-height:190px}
.sk{height:12px;border-radius:6px;background:#e9eef7;display:block}
.w40{width:40%}.w50{width:50%}.w60{width:60%}.w70{width:70%}.w75{width:75%}.w80{width:80%}.w90{width:90%}
.sk-chart{height:64px;border-radius:10px;background:linear-gradient(135deg,rgba(43,108,255,.14),rgba(124,92,255,.18));position:relative}
.sk-chart::after{content:"";position:absolute;left:8px;right:8px;bottom:14px;height:2px;background:var(--brand);border-radius:2px;transform:rotate(-6deg)}
.shot p{text-align:center;font-size:13px;color:var(--muted);font-weight:600;padding:0 0 16px}

/* Download */
.download{background:linear-gradient(135deg,#0f1c3a,#16265a 55%,#2b3f8f);color:#fff;position:relative;overflow:hidden}
.download::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(124,92,255,.5),transparent 70%);top:-160px;right:-120px}
.download-inner{position:relative;display:grid;grid-template-columns:1.3fr .7fr;gap:40px;align-items:center}
.download-copy h2{font-size:34px;font-weight:800;margin-bottom:16px}
.download-copy p{color:rgba(226,235,255,.85);font-size:16px;max-width:600px}
.download-actions{display:flex;gap:14px;margin:28px 0 16px;flex-wrap:wrap}
.download-note{font-size:13.5px;color:rgba(226,235,255,.65)}
.download-qr{display:flex;flex-direction:column;align-items:center;gap:12px}
.qr-box{background:#fff;padding:14px;border-radius:20px;box-shadow:var(--shadow-lg)}
.download-qr p{font-size:13px;color:rgba(226,235,255,.8)}

/* About */
.about{background:var(--bg-soft)}
.about-inner{display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:start}
.about-copy h2{font-size:32px;font-weight:800;margin-bottom:16px}
.about-copy>p{color:var(--muted);font-size:16px;margin-bottom:26px}
.about-list li{display:flex;gap:16px;padding:14px 0;border-bottom:1px dashed var(--line);font-size:15px}
.about-list b{min-width:96px;color:var(--ink)}
.about-list span{color:var(--muted)}
.about-list a{color:var(--brand);font-weight:600}
.about-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px 28px;box-shadow:var(--shadow-sm)}
.about-card h3{font-size:20px;margin-bottom:12px}
.about-card p{color:var(--muted);font-size:15px;margin-bottom:20px}
.about-tip{font-size:13px;color:#94a3b8;margin-top:14px}

/* Footer */
.site-footer{background:#0a1024;color:rgba(226,235,255,.8);padding:52px 0 28px}
.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:12px;color:#fff}
.brand-mark.small{display:inline-flex}
.footer-brand strong{font-size:16px}
.footer-brand small{font-size:12px;color:rgba(226,235,255,.6)}
.footer-nav{display:flex;gap:24px;flex-wrap:wrap}
.footer-nav a{font-size:14px;color:rgba(226,235,255,.8);transition:.2s}
.footer-nav a:hover{color:#fff}
.footer-copy{font-size:13px;color:rgba(226,235,255,.55)}
.footer-disclaimer{border-top:1px solid rgba(255,255,255,.1);margin-top:26px;padding-top:20px}
.footer-disclaimer p{font-size:12.5px;color:rgba(226,235,255,.5);text-align:center}

/* Reveal animation */
[data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
[data-reveal].in{opacity:1;transform:none}

/* Responsive */
@media (max-width:1080px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;text-align:center;gap:50px}
  .hero-copy .lead{margin:0 auto}
  .hero-cta,.hero-stats{justify-content:center}
  .hero-copy h1{font-size:36px}
  .download-inner,.about-inner{grid-template-columns:1fr}
  .position-grid{grid-template-columns:1fr}
  .showcase-grid{grid-template-columns:1fr;max-width:420px}
}
@media (max-width:720px){
  .nav{position:fixed;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;
       background:#fff;padding:12px 20px 20px;box-shadow:var(--shadow-md);
       transform:translateY(-140%);transition:.3s;z-index:55}
  .nav.open{transform:translateY(0)}
  .nav a{padding:13px 4px;border-bottom:1px solid var(--line)}
  .nav a,.site-header:not(.scrolled) .nav a:not(.nav-cta){color:var(--ink)}
  .nav-cta{margin-top:12px;text-align:center;border-bottom:0!important}
  .nav-toggle{display:flex}
  .section{padding:70px 0}
  .section-head h2,.download-copy h2,.about-copy h2{font-size:27px}
  .hero{padding:126px 0 70px}
  .hero-copy h1{font-size:30px}
  .lead{font-size:16px}
  .hero-stats{gap:24px}
  .feature-grid{grid-template-columns:1fr}
}
@media (max-width:420px){
  .hero-cta .btn,.download-actions .btn{width:100%}
  .phone{width:250px;height:520px}
}