:root{--font-stack: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--font-code: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}:root[data-theme=light]{--bg: #ffffff;--bg-subtle: #f5f5f7;--bg-card: #ffffff;--bg-card-hover: #fafafa;--bg-nav: rgba(255, 255, 255, .85);--text-1: #1d1d1f;--text-2: #515154;--text-3: #86868b;--border-subtle: rgba(0, 0, 0, .08);--border-strong: rgba(0, 0, 0, .16);--btn-main-bg: #000000;--btn-main-text: #ffffff;--btn-main-hover: #2d2d2f;--btn-sec-bg: #f5f5f7;--btn-sec-text: #1d1d1f;--btn-sec-border: rgba(0, 0, 0, .08);--btn-sec-hover: #e8e8ed;--accent: #0066cc;--accent-light: rgba(0, 102, 204, .08);--shadow-card: 0 2px 12px rgba(0, 0, 0, .04), 0 1px 3px rgba(0, 0, 0, .02);--shadow-float: 0 20px 40px -10px rgba(0, 0, 0, .08), 0 1px 3px rgba(0, 0, 0, .04);--shadow-btn: 0 1px 2px rgba(0, 0, 0, .1);--kbd-bg: #f5f5f7;--kbd-border: rgba(0, 0, 0, .12);--kbd-text: #1d1d1f}:root[data-theme=dark]{--bg: #000000;--bg-subtle: #121212;--bg-card: #161618;--bg-card-hover: #1c1c1f;--bg-nav: rgba(0, 0, 0, .85);--text-1: #f5f5f7;--text-2: #a1a1a6;--text-3: #6e6e73;--border-subtle: rgba(255, 255, 255, .1);--border-strong: rgba(255, 255, 255, .2);--btn-main-bg: #ffffff;--btn-main-text: #000000;--btn-main-hover: #e5e5e5;--btn-sec-bg: #1c1c1e;--btn-sec-text: #f5f5f7;--btn-sec-border: rgba(255, 255, 255, .12);--btn-sec-hover: #2c2c2e;--accent: #2997ff;--accent-light: rgba(41, 151, 255, .12);--shadow-card: 0 4px 20px rgba(0, 0, 0, .6);--shadow-float: 0 25px 60px -10px rgba(0, 0, 0, .9);--shadow-btn: 0 1px 2px rgba(0, 0, 0, .5);--kbd-bg: #2c2c2e;--kbd-border: rgba(255, 255, 255, .15);--kbd-text: #f5f5f7}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-stack);background-color:var(--bg);color:var(--text-1);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .3s ease,color .3s ease;min-height:100vh;display:flex;flex-direction:column}a{color:inherit;text-decoration:none}.container{width:100%;max-width:1020px;margin:0 auto;padding:0 1.5rem}main{flex:1;padding:3.5rem 0 6rem}.nav{position:sticky;top:0;z-index:100;background:var(--bg-nav);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--border-subtle)}.nav-inner{height:60px;display:flex;align-items:center;justify-content:space-between}.nav-left{display:flex;align-items:center;gap:.75rem}.nav-logo{width:28px;height:28px;border-radius:7px}.nav-title{font-size:1.05rem;font-weight:700;letter-spacing:-.02em}.nav-menu{display:flex;align-items:center;gap:1.75rem;list-style:none}@media(max-width:800px){.nav-menu{display:none}}.nav-link{font-size:.85rem;font-weight:500;color:var(--text-2);transition:color .2s}.nav-link:hover,.nav-link.active{color:var(--text-1)}.nav-right{display:flex;align-items:center;gap:.75rem}.btn-icon{background:var(--bg-subtle);border:1px solid var(--border-subtle);color:var(--text-1);width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}.btn-icon:hover{background:var(--bg-card-hover);border-color:var(--border-strong)}.btn-nav-cta{background:var(--btn-main-bg);color:var(--btn-main-text)!important;font-size:.82rem;font-weight:600;padding:.45rem .95rem;border-radius:8px;transition:all .2s}.btn-nav-cta:hover{background:var(--btn-main-hover)}.page-header{margin-bottom:2.5rem}.page-title{font-size:clamp(2rem,4vw,2.5rem);font-weight:800;letter-spacing:-.035em;margin-bottom:.5rem;color:var(--text-1)}.page-desc{font-size:1.05rem;color:var(--text-2)}.card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:14px;padding:1.75rem;box-shadow:var(--shadow-card);margin-bottom:1.5rem}.card-title{font-size:1.2rem;font-weight:700;margin-bottom:1rem;color:var(--text-1)}table.data-table{width:100%;border-collapse:collapse;font-size:.92rem}table.data-table th,table.data-table td{padding:.9rem 1.2rem;border-bottom:1px solid var(--border-subtle);text-align:left}table.data-table th{font-weight:700;color:var(--text-1);background:var(--bg-subtle);font-size:.82rem;text-transform:uppercase;letter-spacing:.04em}kbd{display:inline-flex;align-items:center;justify-content:center;padding:.15rem .45rem;font-size:.8rem;font-family:var(--font-code);font-weight:600;color:var(--kbd-text);background:var(--kbd-bg);border:1px solid var(--kbd-border);border-radius:5px;margin:0 .2rem}.footer{border-top:1px solid var(--border-subtle);padding:2.5rem 0;color:var(--text-3);font-size:.85rem}.footer-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1.25rem}