:root{--accent-1: #7c5cff;--accent-2: #ff5ca8;--accent-3: #38bdf8;--accent-gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));--bg: #f4f5fb;--bg-soft: rgba(255, 255, 255, .72);--card: rgba(255, 255, 255, .78);--card-solid: #ffffff;--text: #1a1d29;--text-2: #5c6072;--border: rgba(30, 34, 60, .1);--shadow: 0 8px 28px rgba(40, 44, 90, .1);--shadow-hover: 0 16px 40px rgba(40, 44, 90, .18);--blob-opacity: .55;color-scheme:light}[data-theme=dark]{--bg: #0b0d17;--bg-soft: rgba(20, 23, 40, .72);--card: rgba(255, 255, 255, .055);--card-solid: #161a2c;--text: #e8eaf2;--text-2: #9aa0b8;--border: rgba(255, 255, 255, .09);--shadow: 0 8px 28px rgba(0, 0, 0, .35);--shadow-hover: 0 16px 40px rgba(0, 0, 0, .5);--blob-opacity: .32;color-scheme:dark}*{margin:0;padding:0;box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans 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.grad{background:var(--accent-gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}.hero p{margin-top:14px;color:var(--text-2);font-size:16px}.section{padding:28px 0}.section-title{font-size:20px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:10px}.section-title:before{content:"";width:4px;height:18px;border-radius:2px;background:var(--accent-gradient)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}.card{background:var(--card);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease;display:flex;flex-direction:column;gap:10px}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}.card-title{font-size:16px;font-weight:700;line-height:1.45}.card-title 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var(--border);background:var(--card-solid);color:var(--text);outline:none;font-family:inherit;transition:border-color .2s ease}.form-row input:focus,.form-row textarea:focus{border-color:var(--accent-1)}.form-row textarea{resize:vertical;min-height:110px}.form-hint{font-size:12px;color:var(--text-2);margin-top:5px}.btn{display:inline-block;padding:12px 24px;border-radius:12px;border:none;background:var(--accent-gradient);color:#fff;font-size:15px;font-weight:600;transition:opacity .2s ease,transform .2s ease}.btn:hover{opacity:.9;transform:translateY(-1px)}.btn:disabled{opacity:.5;cursor:not-allowed}.prose{max-width:760px}.prose h2{font-size:22px;margin:28px 0 12px;font-weight:700}.prose h3{font-size:18px;margin:22px 0 10px;font-weight:700}.prose p{margin:12px 0}.prose ul,.prose ol{margin:12px 0;padding-left:22px}.prose li{margin:6px 0}.prose pre{background:var(--card-solid);border:1px solid 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