:root{--bg-1: #667eea;--bg-2: #764ba2;--accent-a: #a8edea;--accent-b: #fed6e3;--glass-bg: rgba(255, 255, 255, .15);--glass-bg-strong: rgba(255, 255, 255, .2);--glass-border: rgba(255, 255, 255, .3);--glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, .37);--radius-sm: 10px;--radius-md: 16px;--radius-lg: 24px;--text: #ffffff;--text-dim: rgba(255, 255, 255, .72);--text-faint: rgba(255, 255, 255, .5);--nav-h: 64px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:linear-gradient(135deg,var(--bg-1) 0%,var(--bg-2) 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var(--glass-border);border-radius:var(--radius-md);box-shadow:var(--glass-shadow)}.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:12px 20px;display:flex;justify-content:center}.nav-inner{width:100%;max-width:1120px;height:calc(var(--nav-h) - 16px);padding:0 18px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.5px}.brand-logo{width:32px;height:32px;border-radius:8px;box-shadow:0 4px 12px #0003}.brand-logo.small{width:26px;height:26px;border-radius:6px}.brand-name{font-size:18px}.nav-links{display:flex;gap:26px;font-size:14px;font-weight:500}.nav-links a{opacity:.85;transition:opacity .2s ease}.nav-links a:hover{opacity:1}main{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:0 20px}.hero{min-height:86vh;display:grid;grid-template-columns:1.05fr 1fr;align-items:center;gap:44px;padding:calc(var(--nav-h) + 28px) 0 40px}.eyebrow{display:inline-block;font-size:13px;letter-spacing:2px;text-transform:uppercase;opacity:.8;padding:6px 14px;border-radius:999px;background:var(--glass-bg-strong);border:1px solid var(--glass-border);margin-bottom:16px}.hero-title{font-size:clamp(34px,4.6vw,52px);font-weight:800;line-height:1.15;letter-spacing:-.5px;margin-bottom:14px}.grad{background:linear-gradient(90deg,var(--accent-a),var(--accent-b));-webkit-background-clip:text;background-clip:text;color:transparent}.hero-sub{font-size:16px;color:var(--text-dim);max-width:460px;margin-bottom:22px}.hero-actions{display:flex;gap:12px;margin-bottom:18px;flex-wrap:wrap}.hero-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-faint)}#version-badge{padding:3px 10px;border-radius:999px;background:var(--glass-bg-strong);border:1px solid var(--glass-border);color:var(--text-dim);font-weight:600;font-size:12px}.dot{width:4px;height:4px;border-radius:50%;background:var(--text-faint)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;will-change:transform}.btn-primary{color:#3a2b6b;background:linear-gradient(90deg,var(--accent-a),var(--accent-b));box-shadow:0 8px 24px #a8edea4d}.btn-primary:hover{transform:translateY(-2px) scale(1.02);box-shadow:0 12px 30px #a8edea73}.btn-ghost{background:var(--glass-bg-strong);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-color:var(--glass-border);color:var(--text)}.btn-ghost:hover{background:#ffffff52;transform:translateY(-2px) scale(1.02)}.btn:active{transform:scale(.98)}.btn-block{width:100%}.hero-preview{display:flex;justify-content:center}.app-window{width:100%;max-width:440px;border-radius:var(--radius-lg);overflow:hidden;transform:perspective(1200px) rotateY(-8deg) rotateX(4deg);transition:transform .5s ease}.app-window:hover{transform:perspective(1200px) rotateY(0) rotateX(0) translateY(-4px)}.app-window-bar{display:flex;align-items:center;gap:10px;padding:12px 16px;background:#ffffff14;border-bottom:1px solid rgba(255,255,255,.12)}.traffic{display:flex;gap:6px}.traffic i{width:10px;height:10px;border-radius:50%;background:#ffffff59}.app-window-title{font-size:12px;opacity:.7;letter-spacing:.5px}.app-panel{padding:20px 22px 22px}.app-name{text-align:center;font-size:22px;font-weight:700;letter-spacing:1px}.app-tag{text-align:center;font-size:11px;opacity:.6;margin-bottom:14px}.app-row{margin-bottom:10px}.app-row 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rgba(255,255,255,.35)}.app-progress-info,.app-progress-stats{display:flex;justify-content:space-between;font-size:10px;opacity:.85}.app-file{max-width:65%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.app-speed{font-weight:600}.app-progress-track{height:7px;border-radius:4px;background:#ffffff1f;overflow:hidden;margin:6px 0 5px}.app-progress-fill{height:100%;width:68%;border-radius:4px;background:linear-gradient(90deg,var(--accent-a),var(--accent-b));animation:fillPulse 2.6s ease-in-out infinite}@keyframes fillPulse{0%,to{width:64%}50%{width:72%}}.section{padding:58px 0}.section-head{text-align:center;max-width:620px;margin:0 auto 34px}.section-head h2{font-size:clamp(24px,3.2vw,34px);font-weight:800;margin-bottom:8px}.section-head p{color:var(--text-dim);font-size:15px}.features{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.feature{padding:22px 20px;transition:transform .3s ease,background .3s 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h3{font-size:22px;font-weight:800;margin-bottom:6px}.download-desc{font-size:14px;color:var(--text-dim);max-width:400px;margin-bottom:20px}.btn-download{padding:15px 44px;font-size:17px;letter-spacing:1px;gap:10px}.btn-download svg{width:18px;height:18px}.code-row{display:flex;align-items:center;gap:10px;margin-top:18px;padding:8px 10px 8px 16px;border-radius:999px;background:#ffffff1a;border:1px solid rgba(255,255,255,.22)}.code-label{font-size:12.5px;color:var(--text-faint)}.code-value{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:15px;font-weight:700;letter-spacing:3px;color:var(--accent-a)}.copy-btn{border:1px solid var(--glass-border);background:var(--glass-bg-strong);color:var(--text);font-size:12.5px;font-weight:600;padding:6px 14px;border-radius:999px;cursor:pointer;transition:background .2s ease,transform .2s ease,color .2s 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