:root{--primary: #5b6cff;--primary-dark: #4152e0;--secondary: #22c1a4;--accent: #ff8a5b;--gold: #ffc53d;--bg: #f4f7ff;--surface: #ffffff;--text: #22304a;--muted: #6b7a99;--border: #e2e8f7;--success-bg: #e7f8f1;--error-bg: #ffecec;--error: #d93838;--radius: 16px;--shadow: 0 10px 30px rgba(64, 90, 160, .12)}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,PingFang SC,Microsoft YaHei,system-ui,sans-serif;color:var(--text);background:linear-gradient(180deg,#eef3ff,#f7f9ff 40%,#f4f7ff);min-height:100vh}a{color:inherit;text-decoration:none}h1,h2,h3,h4{margin:0 0 8px}.nav{display:flex;align-items:center;gap:24px;padding:14px 32px;background:var(--surface);box-shadow:0 2px 12px #465faa14;position:sticky;top:0;z-index:20}.nav-brand{display:flex;align-items:center;gap:10px}.nav-logo{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;display:grid;place-items:center;font-weight:800}.nav-title{font-weight:800;font-size:20px;background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}.nav-links{display:flex;gap:18px;font-weight:600;color:var(--muted)}.nav-links a:hover{color:var(--primary)}.nav-user{margin-left:auto;display:flex;align-items:center;gap:10px}.nav-username{font-weight:700;color:var(--primary-dark)}.app-main{max-width:1180px;margin:0 auto;padding:24px 20px 48px}.app-footer{text-align:center;padding:18px;color:var(--muted);font-size:14px}.btn{border:none;border-radius:999px;padding:10px 18px;font-size:15px;font-weight:700;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease}.btn:hover{transform:translateY(-1px)}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 6px 16px #5b6cff4d}.btn-secondary{background:linear-gradient(135deg,var(--secondary),#1aa88d);color:#fff}.btn-ghost{background:#fff;color:var(--primary-dark);border:1px solid var(--border)}.btn-small{padding:6px 12px;font-size:13px}.btn-large{padding:14px 28px;font-size:17px}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:20px}.card-header{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:12px}.card-subtitle{color:var(--muted);font-size:13px}.alert{padding:10px 14px;border-radius:10px;margin-bottom:12px;font-weight:600}.alert-error{background:var(--error-bg);color:var(--error)}.alert-success{background:var(--success-bg);color:#12876c}.badge{background:#eef1ff;color:var(--primary-dark);padding:6px 12px;border-radius:999px;font-size:13px;font-weight:700}.page-loading{padding:60px;text-align:center;color:var(--muted)}.page-header h1{font-size:26px}.page-header p{color:var(--muted);margin:0 0 18px}.empty{text-align:center;color:var(--muted);padding:18px}.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:20px;align-items:stretch;margin-bottom:20px}.hero-text{background:linear-gradient(135deg,#fff,#eef3ff);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}.hero-text h1{font-size:32px}.hero-emoji{font-size:28px}.hero-text p{color:var(--muted);line-height:1.7}.hero-actions{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}.hero-card{background:var(--surface);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.hero-card ul{padding-left:18px;color:var(--muted);line-height:2}.competition-body{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.competition-title{font-size:18px;font-weight:800;margin:0}.competition-meta{color:var(--muted);font-size:14px;margin:6px 0 0}.practice-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}.difficulty-card{background:var(--surface);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);text-align:center;transition:transform .15s ease}.difficulty-card:hover{transform:translateY(-3px)}.difficulty-emoji{font-size:30px}.difficulty-card p{color:var(--muted);font-size:13px;margin:0}.leaderboards{display:grid;grid-template-columns:1fr 1fr;gap:20px}.rank-table{width:100%;border-collapse:collapse;font-size:14px}.rank-table th,.rank-table td{padding:10px 8px;text-align:left;border-bottom:1px solid var(--border)}.rank-table th{color:var(--muted);font-size:13px}.rank{font-weight:800;width:48px}.rank-1{color:#d4a017}.rank-2{color:#8e9bb3}.rank-3{color:#b87333}.score{font-weight:800;color:var(--primary-dark)}.row-me{background:#f3f6ff}.stars{white-space:nowrap}.star{color:#dfe3ef}.star-on{color:var(--gold)}.stars-sm{font-size:13px}.stars-md{font-size:16px}.stars-lg{font-size:26px}.tabs{display:flex;gap:10px;margin-bottom:16px}.tab{border:none;background:#fff;padding:8px 18px;border-radius:999px;font-weight:700;color:var(--muted);cursor:pointer;box-shadow:0 2px 8px #465faa14}.tab.active{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}.text-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.text-card{background:var(--surface);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);display:block;transition:transform .15s ease}.text-card:hover{transform:translateY(-3px)}.text-card-head{display:flex;justify-content:space-between;align-items:center;gap:8px}.text-card-best{color:var(--gold);font-weight:800;font-size:13px}.text-card-none{color:var(--muted);font-size:13px;font-weight:700}.text-card-score{margin-top:10px;padding-top:10px;border-top:1px dashed var(--border);font-size:12px;color:var(--primary-dark);font-weight:700;line-height:1.6}.text-card-preview{color:var(--muted);font-size:13px;line-height:1.6}.text-card-meta{display:flex;gap:12px;color:var(--muted);font-size:12px}.typing-engine{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}.typing-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.typing-sub{color:var(--muted);font-size:13px;margin:0}.stats-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:16px 0}.stat{background:#f6f8ff;border-radius:12px;padding:10px 14px;display:flex;flex-direction:column}.stat-label{color:var(--muted);font-size:12px}.stat-value{font-size:20px;font-weight:800;color:var(--primary-dark)}.typing-surface{border:2px dashed var(--border);border-radius:14px;padding:34px 24px 22px;background:#fbfcff;outline:none;font-size:20px;line-height:3;font-family:Consolas,Courier New,monospace;-webkit-user-select:none;user-select:none}.typing-surface:focus{border-color:var(--primary);box-shadow:0 0 0 4px #5b6cff1f}.text-display{word-break:break-word}.token{position:relative;display:inline-block;line-height:1;vertical-align:baseline}.token-space{white-space:pre}.token-glossed{text-decoration:underline wavy rgba(255,138,91,.55);text-decoration-thickness:1px;text-underline-offset:5px}.gloss{position:absolute;bottom:calc(100% - 1px);left:50%;transform:translate(-50%);max-width:220px;padding:1px 8px;border-radius:10px;background:linear-gradient(180deg,#fff6e8,#ffefd8);border:1px solid #ffdca8;color:#b4530a;font-size:12px;font-weight:700;line-height:1.5;letter-spacing:.3px;white-space:nowrap;box-shadow:0 2px 8px #b4530a24;font-family:PingFang SC,Microsoft YaHei,sans-serif;pointer-events:none;z-index:5}.gloss:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:4px solid transparent;border-top-color:#ffdca8}.char{display:inline-block;border-radius:4px;padding:0 1px;color:#8894ad}.char-space{min-width:10px}.char-correct{background:#e3f7ee;color:#10694f}.char-wrong{background:#ffe2e2;color:var(--error);text-decoration:underline}.char-current{box-shadow:0 0 0 2px var(--primary);background:#fff7e0}.typing-tips{display:flex;gap:14px;flex-wrap:wrap;margin:14px 0;font-size:13px;color:var(--muted)}.tip-highlight{color:var(--primary-dark);font-weight:700}.tip-error{color:var(--error);font-weight:700}.typing-actions{display:flex;gap:10px}.result-panel{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px;text-align:center}.result-score{margin:10px 0}.result-score-value{font-size:54px;font-weight:900;color:var(--primary-dark)}.result-score-unit{color:var(--muted);margin-left:6px}.result-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:20px 0}.result-item{background:#f6f8ff;border-radius:12px;padding:12px;display:flex;flex-direction:column}.result-label{color:var(--muted);font-size:12px}.result-value{font-size:18px;font-weight:800}.result-extra{color:var(--primary-dark);font-weight:700;margin-bottom:12px}.result-actions{display:flex;gap:12px;justify-content:center}.auth-page{display:grid;place-items:center;min-height:60vh}.auth-card{width:420px;max-width:100%}.auth-tabs{display:flex;gap:10px;margin-bottom:16px}.auth-tab{flex:1;border:none;background:#f1f4ff;padding:10px;border-radius:999px;font-weight:700;color:var(--muted);cursor:pointer}.auth-tab.active{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff}.auth-form{display:flex;flex-direction:column;gap:12px}.auth-form label,.form-grid label{display:flex;flex-direction:column;gap:6px;font-weight:700;font-size:14px}input,select,textarea{font:inherit;padding:10px 12px;border-radius:10px;border:1px solid var(--border);background:#fbfcff;color:var(--text)}input:focus,select:focus,textarea:focus{outline:2px solid rgba(91,108,255,.35);border-color:var(--primary)}.auth-tip{color:var(--muted);font-size:13px;margin-top:14px}.summary-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:20px}.summary-card{background:var(--surface);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);display:flex;flex-direction:column}.summary-label{color:var(--muted);font-size:13px}.summary-value{font-size:24px;font-weight:900;color:var(--primary-dark)}.date-picker{margin-bottom:14px}.date-picker label{display:flex;align-items:center;gap:10px;font-weight:700}.admin-toolbar{display:flex;gap:10px;align-items:center;margin-bottom:14px;flex-wrap:wrap}.admin-editor{display:flex;flex-direction:column;gap:12px}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}.checkbox{flex-direction:row!important;align-items:center;gap:8px!important}.admin-editor-actions{display:flex;gap:10px}.admin-table td,.admin-table th{font-size:13px}.actions{display:flex;gap:6px}.empty-card{text-align:center}@media(max-width:900px){.hero,.leaderboards,.practice-cards{grid-template-columns:1fr}.stats-bar,.result-grid{grid-template-columns:repeat(2,1fr)}.nav{flex-wrap:wrap;gap:12px;padding:12px 16px}}