/* ============================================================
   深眸AI防溺水 — 深蓝科技主题 (与深眸哨兵 App 一致)
   西安深眸安全科技有限公司 | tuituiai.cn
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;900&display=swap');

/* --- Design Tokens --- */
:root {
  --bg-deep: #080b14;
  --bg-primary: #0a0e17;
  --bg-surface: #111827;
  --bg-card: #161b27;
  --bg-card-hover: #1c2335;
  --bg-glass: rgba(17, 24, 39, 0.65);

  --brand:       #3b82f6;
  --brand-light: #60a5fa;
  --brand-glow:  rgba(59, 130, 246, 0.28);
  --brand-dim:   rgba(59, 130, 246, 0.1);
  --brand-strong:#2563eb;

  --cyan:        var(--brand);
  --cyan-glow:   var(--brand-glow);
  --cyan-dim:    var(--brand-dim);
  --cyan-strong: var(--brand-strong);
  --purple:      #6366f1;
  --purple-glow: rgba(99, 102, 241, 0.25);
  --emerald:     #22c55e;
  --amber:       #f59e0b;
  --red:         #f43f5e;

  --text-primary:   #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted:     #64748b;

  --border:          rgba(255,255,255,0.06);
  --border-active:   rgba(59,130,246,0.3);
  --border-glow:     rgba(59,130,246,0.55);

  --shadow-card:      0 0 0 1px rgba(255,255,255,0.04), 0 4px 24px rgba(0,0,0,0.4);
  --shadow-card-hover: 0 0 0 1px rgba(59,130,246,0.15), 0 8px 40px rgba(59,130,246,0.1);
  --shadow-glow-cyan: 0 0 30px rgba(59,130,246,0.25), 0 0 60px rgba(59,130,246,0.08);

  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --font-display: 'Orbitron', 'Arial Black', sans-serif;
  --font-body:    'Noto Sans SC', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Reset --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--font-body);
  background:var(--bg-deep);
  color:var(--text-primary);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  padding-top:72px;
}
a{color:var(--cyan);text-decoration:none;transition:color .2s}
a:hover{color:var(--cyan-strong)}
img{max-width:100%;display:block}

/* Ambient background */
body::before{
  content:'';
  position:fixed;inset:0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(0,229,255,0.04) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 85% 70%, rgba(168,85,247,0.03) 0%, transparent 60%),
    radial-gradient(ellipse 40% 50% at 50% 50%, rgba(0,229,255,0.02) 0%, transparent 80%);
  pointer-events:none;z-index:0;
}
/* Subtle grid */
body::after{
  content:'';
  position:fixed;inset:0;
  background-image:
    linear-gradient(rgba(0,229,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,0.015) 1px, transparent 1px);
  background-size:60px 60px;
  pointer-events:none;z-index:0;
}

/* --- Container --- */
.container{max-width:1240px;margin:0 auto;padding:0 28px;position:relative;z-index:1}

/* --- Navbar --- */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;
  background:rgba(6,9,15,0.85);
  backdrop-filter:blur(20px) saturate(180%);
  -webkit-backdrop-filter:blur(20px) saturate(180%);
  border-bottom:1px solid var(--border);
}
.navbar-inner{
  max-width:1240px;width:100%;margin:0 auto;
  padding:0 28px;
  display:flex;align-items:center;justify-content:space-between;
  height:100%;
}

/* Logo with rotating ring */
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-size:22px;font-weight:700;color:var(--text-primary);letter-spacing:0.02em}
.logo-icon{width:34px;height:34px;position:relative;display:flex;align-items:center;justify-content:center}
.logo-icon::before{content:'';position:absolute;inset:0;border-radius:50%;background:conic-gradient(from 0deg,var(--cyan),var(--purple),var(--cyan));animation:logo-rotate 4s linear infinite}
.logo-icon::after{content:'';position:absolute;inset:3px;border-radius:50%;background:var(--bg-deep)}
.logo-icon-inner{position:relative;z-index:1;font-size:16px;font-weight:900;color:var(--cyan)}
@keyframes logo-rotate{to{transform:rotate(360deg)}}
.logo-text{font-weight:800;font-size:20px;letter-spacing:1px}
.logo-text span{color:var(--cyan);font-weight:900}
.logo-sub{font-size:11px;color:var(--text-muted);font-weight:400;letter-spacing:0.05em;font-family:var(--font-body)}

/* Nav links */
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{font-size:13.5px;color:var(--text-secondary);font-weight:500;letter-spacing:0.01em;position:relative;padding:4px 0;transition:color .25s}
.nav-links a::after{content:'';position:absolute;bottom:-2px;left:0;right:0;height:1.5px;background:var(--cyan);transform:scaleX(0);transition:transform .25s var(--ease-out)}
.nav-links a:hover{color:var(--text-primary)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-cta{padding:8px 22px;background:linear-gradient(135deg,var(--cyan-strong),var(--cyan));color:#06090f!important;border-radius:var(--radius-full);font-weight:700;font-size:13px;letter-spacing:0.02em;transition:all .3s var(--ease-out);box-shadow:0 0 20px var(--cyan-glow)}
.nav-cta:hover{box-shadow:0 0 35px var(--cyan-glow);transform:translateY(-1px)}
.nav-cta::after{display:none}

/* Mobile */
.nav-mobile-toggle{display:none;background:none;border:none;color:var(--text-primary);font-size:24px;cursor:pointer;padding:8px}
.mobile-menu{display:none;position:fixed;top:72px;left:0;right:0;background:rgba(10,14,23,0.97);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:20px 28px;flex-direction:column;gap:14px;z-index:99}
.mobile-menu.open{display:flex}
.mobile-menu a{font-size:15px;color:var(--text-secondary);padding:8px 0;font-weight:500}
.mobile-menu .nav-cta{display:inline-block;text-align:center;margin-top:8px;font-size:14px}

/* --- Hero --- */
.hero-section{padding:100px 0 60px;position:relative;overflow:hidden;min-height:85vh;display:flex;align-items:center}
.hero-section::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 70% 50% at 30% 40%, rgba(0,229,255,0.06) 0%, transparent 70%),radial-gradient(ellipse 50% 40% at 80% 20%, rgba(168,85,247,0.04) 0%, transparent 70%)}
.hero-content{position:relative;z-index:1;text-align:center;max-width:800px;margin:0 auto}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border:1px solid var(--border-active);border-radius:9999px;font-size:12px;font-weight:600;color:var(--cyan);background:var(--cyan-dim);letter-spacing:0.04em;text-transform:uppercase;margin-bottom:24px}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan);animation:pulse-dot 2s ease-in-out infinite}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:0.4}}
.hero-title{font-family:var(--font-display);font-size:clamp(36px, 6vw, 60px);font-weight:800;line-height:1.1;letter-spacing:-0.01em;color:var(--text-primary);margin-bottom:20px}
.hero-title .highlight{background:linear-gradient(135deg, var(--cyan), #60efff, var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:17px;color:var(--text-secondary);line-height:1.8;max-width:620px;margin:0 auto 12px}
.hero-sub{font-size:13px;color:var(--text-muted)}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:36px}

/* --- Buttons --- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:9999px;font-size:14px;font-weight:600;letter-spacing:0.01em;transition:all .3s var(--ease-out);cursor:pointer;border:none;position:relative;overflow:hidden}
.btn-primary{background:linear-gradient(135deg,var(--cyan-strong),#0ea5e9);color:#06090f;box-shadow:0 0 24px var(--cyan-glow)}
.btn-primary:hover{box-shadow:0 0 40px var(--cyan-glow);transform:translateY(-2px);color:#06090f}
.btn-secondary{background:transparent;color:var(--text-primary);border:1.5px solid var(--border)}
.btn-secondary:hover{border-color:var(--border-active);background:var(--cyan-dim);color:var(--cyan)}

/* --- Sections --- */
.section{padding:80px 0;position:relative}
.section-header{text-align:center;margin-bottom:48px}
.section-label{font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:0.12em;color:var(--cyan);display:inline-flex;align-items:center;gap:10px;margin-bottom:12px;text-transform:uppercase}
.section-label::before,.section-label::after{content:'';width:20px;height:1px;background:var(--border-active)}
.section-title{font-family:var(--font-display);font-size:clamp(24px, 4vw, 36px);font-weight:800;color:var(--text-primary);letter-spacing:-0.01em;line-height:1.3}
.section-subtitle{font-size:15px;color:var(--text-secondary);margin-top:10px;max-width:560px;margin-left:auto;margin-right:auto}

/* --- Cards --- */
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;transition:all .35s var(--ease-out);position:relative}
.card-hover:hover{border-color:var(--border-active);background:var(--bg-card-hover);box-shadow:var(--shadow-card-hover);transform:translateY(-4px)}
.card h3{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:8px}
.card p{font-size:13.5px;color:var(--text-secondary);line-height:1.7}

/* --- Stats --- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:20px}
.stat-item{text-align:center;padding:24px 16px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .35s var(--ease-out)}
.stat-item:hover{border-color:var(--border-active);box-shadow:0 0 30px var(--cyan-dim)}
.stat-num{font-family:var(--font-display);font-size:clamp(28px,4vw,40px);font-weight:800;background:linear-gradient(135deg,var(--cyan),var(--purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.stat-label{font-size:12.5px;color:var(--text-muted);margin-top:4px;font-weight:500}

/* --- Business Cards --- */
.business-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.business-card{background:var(--bg-glass);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:var(--radius-xl);padding:40px 32px;position:relative;overflow:hidden;transition:all .4s var(--ease-out)}
.business-card::before{content:'';position:absolute;inset:0;border-radius:inherit;opacity:0;transition:opacity .4s}
.business-card.ai::before{background:radial-gradient(ellipse at top left, rgba(0,229,255,0.08), transparent 70%)}
.business-card.edge::before{background:radial-gradient(ellipse at top left, rgba(168,85,247,0.08), transparent 70%)}
.business-card:hover::before{opacity:1}
.business-card:hover{border-color:var(--border-active);transform:translateY(-4px)}
.business-icon{font-size:40px;margin-bottom:16px}
.business-card h3{font-family:var(--font-display);font-size:22px;font-weight:700;margin-bottom:8px;color:var(--text-primary)}
.business-card .sub{font-size:13px;color:var(--text-muted);margin-bottom:16px}
.business-card ul{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.business-card ul li{padding:5px 12px;background:rgba(255,255,255,0.03);border:1px solid var(--border);border-radius:9999px;font-size:12px;color:var(--text-secondary);font-weight:500}

/* --- Advantages --- */
.advantages-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.adv-card{text-align:center;padding:36px 24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all .35s var(--ease-out)}
.adv-card:hover{border-color:var(--border-active);background:var(--bg-card-hover);transform:translateY(-4px)}
.adv-icon{font-size:42px;margin-bottom:14px}
.adv-card h4{font-size:14px;font-weight:700;color:var(--text-primary);margin-bottom:6px}
.adv-card p{font-size:12.5px;color:var(--text-secondary);line-height:1.7}

/* --- Algorithm Tags --- */
.alg-grid{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.alg-tag{padding:8px 18px;background:var(--cyan-dim);border:1px solid var(--border);border-radius:9999px;font-size:13px;font-weight:500;color:var(--cyan);transition:all .25s;cursor:default}
.alg-tag:hover{background:rgba(0,229,255,0.12);border-color:var(--border-active);box-shadow:0 0 16px var(--cyan-dim)}

/* --- Scenario Grid --- */
.scene-grid{display:grid;grid-template-columns:repeat(auto-fill, minmax(170px, 1fr));gap:16px}
.scene-card{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:28px 16px;text-align:center;border-radius:var(--radius-lg);border:1px solid var(--border);background:var(--bg-card);transition:all .35s var(--ease-out);cursor:pointer;text-decoration:none}
.scene-card:hover{border-color:var(--border-active);background:var(--bg-card-hover);box-shadow:var(--shadow-card-hover);transform:translateY(-4px)}
.scene-card .icon{font-size:34px;margin-bottom:10px}
.scene-card .name{font-size:13px;font-weight:600;color:var(--text-primary)}
.scene-card .desc{font-size:11px;color:var(--text-muted);margin-top:4px}

/* --- CTA --- */
.cta-section{text-align:center;padding:60px 40px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-xl);position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 30% 50%, var(--cyan-dim) 0%, transparent 60%),radial-gradient(ellipse at 70% 50%, rgba(168,85,247,0.06) 0%, transparent 60%)}
.cta-section h2{font-family:var(--font-display);font-size:28px;font-weight:800;position:relative;z-index:1}
.cta-section p{font-size:15px;color:var(--text-secondary);margin:12px 0 24px;position:relative;z-index:1}
.cta-section .btn{position:relative;z-index:1}

/* --- Footer --- */
.site-footer{border-top:1px solid var(--border);padding:48px 0 32px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:32px}
.footer-brand .logo{font-size:20px;margin-bottom:10px}
.footer-brand p{font-size:13px;color:var(--text-muted);line-height:1.8}
.footer-col h4{font-family:var(--font-display);font-size:14px;font-weight:700;color:var(--text-primary);margin-bottom:16px;letter-spacing:0.04em;text-transform:uppercase}
.footer-col a{display:block;font-size:13px;color:var(--text-muted);padding:4px 0;transition:color .2s}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{border-top:1px solid var(--border);padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:12px;color:var(--text-muted)}

/* --- Steps --- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step-card{text-align:center;padding:32px 24px}
.step-num{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--cyan-strong),var(--cyan));color:#06090f;font-size:20px;font-weight:900;display:flex;align-items:center;justify-content:center;margin:0 auto 14px;box-shadow:0 0 20px var(--cyan-glow);font-family:var(--font-display)}
.step-card h4{font-size:14px;font-weight:700;color:var(--text-primary)}
.step-card p{font-size:12.5px;color:var(--text-secondary);margin-top:8px;line-height:1.7}

/* --- Contact --- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;max-width:900px;margin:0 auto}
.contact-info{padding:32px}
.contact-info h3{font-size:18px;font-weight:700;margin-bottom:12px}
.contact-info .info-item{display:flex;align-items:center;gap:10px;padding:10px 0;font-size:14px;color:var(--text-secondary);border-bottom:1px solid var(--border)}

/* --- Reveal Animations --- */
.reveal{opacity:0;transform:translateY(24px);transition:all .6s var(--ease-out)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* --- Modal --- */
.modal-overlay{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,0.7);display:flex;align-items:center;justify-content:center;backdrop-filter:blur(4px)}
.modal-content{background:var(--bg-card);border:1px solid var(--border-active);border-radius:var(--radius-xl);padding:40px;max-width:480px;width:90%;text-align:center;position:relative}
.modal-close{position:absolute;top:16px;right:16px;background:none;border:none;color:var(--text-muted);font-size:20px;cursor:pointer;transition:color .2s}
.modal-close:hover{color:var(--text-primary)}

/* --- Scrollbar --- */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--border-active)}

/* --- Responsive --- */
@media(max-width:1024px){.advantages-grid,.stats-grid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:1fr;max-width:400px;margin:0 auto}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
@media(max-width:768px){.nav-links{display:none}.nav-mobile-toggle{display:block}.hero-section{min-height:auto;padding:80px 0 40px}.contact-grid{grid-template-columns:1fr}.scene-grid{grid-template-columns:repeat(2,1fr)}.stats-grid{grid-template-columns:repeat(2,1fr)}.advantages-grid{grid-template-columns:1fr}.business-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}}
@media(max-width:480px){.container{padding:0 16px}.hero-title{font-size:28px}.hero-desc{font-size:15px}.section-title{font-size:22px}}

/* --- Nav active state --- */
.nav-links a.active{color:var(--brand)}
.nav-links a.active::after{transform:scaleX(1)}

/* --- Product Matrix --- */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:32px 28px;position:relative;transition:all .35s var(--ease-out);display:flex;flex-direction:column}
.product-card:hover{border-color:var(--border-active);box-shadow:var(--shadow-card-hover);transform:translateY(-4px)}
.product-card.featured{border-color:var(--border-active);background:linear-gradient(180deg,rgba(59,130,246,0.08),var(--bg-card) 40%)}
.product-sku{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--brand);letter-spacing:0.08em;margin-bottom:6px}
.product-name{font-family:var(--font-display);font-size:22px;font-weight:800;color:var(--text-primary);margin-bottom:4px}
.product-badge{position:absolute;top:16px;right:16px;padding:4px 12px;border-radius:9999px;font-size:11px;font-weight:700;background:linear-gradient(135deg,var(--brand-strong),var(--brand));color:#fff}
.product-price{margin:18px 0 14px}
.product-deposit{font-size:28px;font-weight:900;font-family:var(--font-display);color:var(--text-primary)}
.product-deposit span{font-size:14px;font-weight:600;color:var(--text-muted)}
.product-monthly{font-size:15px;color:var(--brand-light);margin-top:4px;font-weight:600}
.product-specs{list-style:none;margin:0 0 20px;padding:0;flex:1}
.product-specs li{font-size:13px;color:var(--text-secondary);padding:7px 0;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px}
.product-specs li::before{content:'✓';color:var(--brand);font-weight:700;font-size:11px}
.product-specs li:last-child{border-bottom:none}
.product-chip{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;background:var(--brand-dim);border:1px solid var(--border-active);border-radius:9999px;font-size:11px;color:var(--brand-light);margin-bottom:14px}

/* --- Scenario Cards --- */
.scenario-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scenario-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:28px;transition:all .35s var(--ease-out);text-decoration:none;color:inherit;display:block}
.scenario-card:hover{border-color:var(--border-active);box-shadow:var(--shadow-card-hover);transform:translateY(-4px);color:inherit}
.scenario-card .sc-icon{font-size:40px;margin-bottom:12px}
.scenario-card h3{font-size:18px;font-weight:700;color:var(--text-primary);margin-bottom:6px}
.scenario-card .sc-product{font-size:12px;color:var(--brand);font-weight:600;margin-bottom:10px}
.scenario-card .sc-price{font-family:var(--font-display);font-size:20px;font-weight:800;color:var(--text-primary);margin-bottom:8px}
.scenario-card .sc-price small{font-size:13px;font-weight:500;color:var(--text-muted)}
.scenario-card p{font-size:13px;color:var(--text-secondary);line-height:1.7;margin-bottom:12px}
.scenario-card .sc-meta{font-size:12px;color:var(--text-muted);line-height:1.6}
.scenario-card.hot{border-color:rgba(59,130,246,0.35);background:linear-gradient(180deg,rgba(59,130,246,0.06),var(--bg-card) 50%)}

/* --- Dual CTA --- */
.cta-dual{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:8px}
.cta-dual .btn{min-width:180px;justify-content:center}
.btn-admin{background:linear-gradient(135deg,var(--brand-strong),var(--brand));color:#fff;box-shadow:0 0 24px var(--brand-glow)}
.btn-admin:hover{color:#fff;box-shadow:0 0 40px var(--brand-glow);transform:translateY(-2px)}
.btn-download{background:transparent;color:var(--text-primary);border:1.5px solid var(--border-active)}
.btn-download:hover{background:var(--brand-dim);border-color:var(--brand);color:var(--brand-light)}

/* --- Download Page --- */
.download-hero{text-align:center;padding:60px 0 40px}
.download-card{max-width:520px;margin:0 auto;background:var(--bg-card);border:1px solid var(--border-active);border-radius:var(--radius-xl);padding:48px 36px;text-align:center;box-shadow:var(--shadow-glow-cyan)}
.download-icon{width:88px;height:88px;margin:0 auto 20px;border-radius:22px;background:linear-gradient(135deg,var(--brand-strong),var(--brand));display:flex;align-items:center;justify-content:center;font-size:44px;box-shadow:0 8px 32px var(--brand-glow)}
.download-card h1{font-family:var(--font-display);font-size:26px;font-weight:800;margin-bottom:8px}
.download-card .version{font-size:13px;color:var(--text-muted);margin-bottom:24px}
.download-card .apk-meta{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;margin:20px 0;font-size:12px;color:var(--text-muted)}
.download-card .apk-meta span{display:flex;align-items:center;gap:6px}
.download-steps{max-width:640px;margin:48px auto 0;text-align:left}
.download-steps ol{list-style:none;counter-reset:step}
.download-steps li{counter-increment:step;padding:14px 0 14px 48px;position:relative;font-size:14px;color:var(--text-secondary);border-bottom:1px solid var(--border)}
.download-steps li::before{content:counter(step);position:absolute;left:0;top:14px;width:32px;height:32px;border-radius:50%;background:var(--brand-dim);border:1px solid var(--border-active);color:var(--brand);font-weight:700;font-size:13px;display:flex;align-items:center;justify-content:center}

/* --- Product Detail Page --- */
.product-compare{overflow-x:auto;margin-top:32px}
.compare-table{width:100%;border-collapse:collapse;font-size:13px}
.compare-table th,.compare-table td{padding:14px 16px;border-bottom:1px solid var(--border);text-align:left}
.compare-table th{font-weight:600;color:var(--text-primary);background:var(--bg-surface)}
.compare-table td{color:var(--text-secondary)}
.compare-table tr:hover td{background:rgba(59,130,246,0.04)}
.compare-table .col-highlight{background:rgba(59,130,246,0.06)}
.pricing-note{text-align:center;margin-top:24px;padding:16px 24px;background:var(--brand-dim);border:1px solid var(--border-active);border-radius:var(--radius-lg);font-size:13px;color:var(--text-secondary)}
.pricing-note strong{color:var(--brand-light)}

@media(max-width:1024px){.product-grid,.scenario-cards{grid-template-columns:1fr;max-width:480px;margin:0 auto}}
@media(max-width:768px){.footer-grid{grid-template-columns:1fr!important}.cta-dual .btn{width:100%}.download-card{padding:32px 24px}}