:root{--page-background: radial-gradient(circle at 14% 18%, rgba(255, 209, 240, .85) 0, rgba(255, 209, 240, 0) 42%), radial-gradient(circle at 86% 12%, rgba(205, 224, 255, .85) 0, rgba(205, 224, 255, 0) 40%), radial-gradient(circle at 78% 88%, rgba(224, 199, 255, .85) 0, rgba(224, 199, 255, 0) 46%), linear-gradient(155deg, #ffe3f4 0%, #f2e0ff 46%, #dfe6ff 100%);--pink-050: #fff2f9;--pink-100: #ffe0f1;--pink-150: #ffc9e6;--pink-200: #ffb0d9;--pink-300: #ff86c2;--pink-400: #ff5ba9;--pink-500: #ff2e90;--lav-100: #efe6ff;--lav-200: #dcc9ff;--lav-300: #c3a7ff;--ink: #7a4f86;--ink-soft: #a884b8;--outline: #c85fa5;--panel: #fff8fc;--field: #fffafe;--grid: rgba(255, 134, 194, .16);--font-pixel: "Pixelify Sans", "Segoe UI", "Microsoft YaHei", sans-serif;--font-chip: "Silkscreen", ui-monospace, Consolas, monospace;--font-hanzi: "Pixelify Sans", "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif}*{box-sizing:border-box}html,body{min-height:100%}body{margin:0;font-family:var(--font-pixel);color:var(--ink);background:var(--page-background);background-attachment:fixed}.titlebar{height:34px;display:flex;justify-content:space-between;align-items:center;padding:0 10px;background:linear-gradient(180deg,#ffa6d4,#ff7cbb);border-bottom:3px solid var(--outline);box-shadow:inset 0 2px #fff9}.title{font-family:var(--font-chip);font-size:12px;letter-spacing:1px;color:#fff;text-decoration:none;cursor:pointer;text-shadow:1px 1px 0 #d64f9a}.title:hover{color:#fff0f7}.window-controls{display:flex;gap:6px}.fake-btn{font-family:var(--font-chip);font-size:10px;width:24px;height:22px;display:inline-flex;align-items:center;justify-content:center;color:var(--outline);background:var(--pink-100);border:2px solid var(--outline);border-radius:4px;box-shadow:inset 2px 2px #fff,2px 2px #c85fa573}.app{position:relative;max-width:1120px;margin:0 auto;padding:26px 28px 48px}.deco{position:absolute;pointer-events:none;-webkit-user-select:none;user-select:none;opacity:.75;z-index:0}.deco-heart{color:var(--pink-300);text-shadow:1px 1px 0 #fff}.deco-star{color:var(--lav-300);text-shadow:1px 1px 0 #fff}.deco-star-1{top:8px;right:22px;font-size:26px}.deco-heart-1{top:54px;right:54px;font-size:18px}.deco-star-2{bottom:30px;left:18px;font-size:22px}.app-header{position:relative;z-index:1;margin-bottom:20px}.eyebrow{margin:0 0 12px;display:inline-flex;align-items:center;padding:6px 12px;border-radius:4px;background:linear-gradient(180deg,var(--lav-100),var(--lav-200));border:2px solid var(--lav-300);box-shadow:inset 2px 2px #fff,2px 2px #c3a7ff8c;color:#8a5cc4;font-family:var(--font-chip);font-size:11px;letter-spacing:1px;text-transform:uppercase}h1{margin:0 0 12px;font-family:var(--font-pixel);font-weight:700;font-size:34px;line-height:1.15;color:var(--pink-500);text-shadow:3px 3px 0 #ffffff,4px 4px 0 var(--lav-200)}.subtitle{margin:0;color:var(--ink-soft);font-size:16px;line-height:1.5}.layout{position:relative;z-index:1;display:grid;grid-template-columns:minmax(320px,420px) 1fr;gap:20px;align-items:start}.panel{background-color:var(--panel);border:3px solid var(--outline);border-radius:8px;padding:20px;box-shadow:inset 3px 3px #fff,inset -3px -3px #ffb0d980,6px 6px #c85fa547}.controls-panel{background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:18px 18px}.lesson-selector{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-bottom:18px}.selector-field{min-width:0}label{display:block;margin-bottom:8px;font-family:var(--font-chip);font-size:11px;letter-spacing:.5px;text-transform:uppercase;color:var(--pink-400)}textarea,select,input[type=number]{width:100%;padding:11px 12px;font-family:var(--font-pixel);font-size:15px;color:var(--ink);background:var(--field);border:2px solid var(--outline);border-radius:6px;box-shadow:inset 2px 2px #c85fa538;transition:box-shadow .15s ease,border-color .15s ease,background-color .15s ease}select{cursor:pointer}textarea{min-height:150px;resize:vertical;line-height:1.7;font-family:var(--font-hanzi);font-size:18px;margin-bottom:18px}textarea::placeholder{color:#d79ec3}textarea:focus,select:focus,input[type=number]:focus{outline:none;border-color:var(--pink-400);background:#fff;box-shadow:inset 2px 2px #c85fa52e,0 0 0 3px #ff86c266}.controls{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px;flex-wrap:wrap}.controls label{margin-bottom:0}input[type=number]{width:96px}.button-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.generate-btn{font-family:var(--font-chip);font-size:13px;letter-spacing:.5px;color:#fff;padding:13px 20px;background:linear-gradient(180deg,var(--pink-300) 0%,var(--pink-400) 100%);border:3px solid var(--outline);border-radius:8px;cursor:pointer;text-shadow:1px 1px 0 rgba(180,60,130,.55);box-shadow:inset 2px 2px #ffffffb3,inset -2px -2px #b43c8240,4px 4px #c85fa573;transition:transform .1s ease,background .15s ease,box-shadow .1s ease,opacity .15s ease}.generate-btn:hover{background:linear-gradient(180deg,var(--pink-200) 0%,var(--pink-300) 100%)}.generate-btn:active{transform:translate(4px,4px);box-shadow:inset 2px 2px #ffffff80,inset -2px -2px #b43c8240}.generate-btn:disabled{opacity:.55;cursor:not-allowed;transform:none}.ghost-btn{font-family:var(--font-chip);font-size:11px;letter-spacing:.3px;color:var(--outline);padding:11px 14px;background:var(--pink-100);border:2px solid var(--outline);border-radius:8px;cursor:pointer;box-shadow:inset 2px 2px #fff,3px 3px #c85fa559;transition:transform .1s ease,background .15s ease,opacity .15s ease}.ghost-btn:hover{background:#ffd0e8}.ghost-btn:active{transform:translate(3px,3px);box-shadow:inset 2px 2px #c85fa54d}.ghost-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.status{margin:16px 0 0;min-height:22px;display:flex;align-items:center;gap:9px;font-family:var(--font-chip);font-size:11px;letter-spacing:.3px;color:var(--ink-soft)}.status:before{content:"";width:10px;height:10px;background:var(--pink-400);border:2px solid var(--outline);box-shadow:0 0 0 3px #ff86c240;animation:pixel-blink 1.1s steps(2,start) infinite}@keyframes pixel-blink{0%,to{opacity:1}50%{opacity:.35}}.preview-panel{display:flex;flex-direction:column;gap:12px;min-height:520px}.preview-label{font-family:var(--font-chip);font-size:11px;letter-spacing:.5px;text-transform:uppercase;color:var(--pink-400)}.preview-frame{flex:1;width:100%;min-height:520px;border:2px solid var(--outline);border-radius:6px;background:#fff;box-shadow:inset 2px 2px #c85fa52e}::-webkit-scrollbar{width:14px;height:14px}::-webkit-scrollbar-track{background:var(--pink-100)}::-webkit-scrollbar-thumb{background:var(--pink-300);border:3px solid var(--pink-100);border-radius:7px}::-webkit-scrollbar-thumb:hover{background:var(--pink-400)}@media (max-width: 900px){.layout{grid-template-columns:1fr}.preview-panel{min-height:460px}h1{font-size:28px}}