:root{color-scheme:dark;--bg: #0c1117;--bg-soft: #121823;--surface: rgba(18, 24, 34, .88);--surface-strong: #161f2d;--line: rgba(255, 255, 255, .08);--text: #f7f4ee;--muted: #a8b2c1;--brand: #7be0c3;--brand-2: #ffb36b;--accent: #9f8bff;--danger: #ff6d5c;--shadow: 0 28px 90px rgba(0, 0, 0, .38);--radius-xl: 30px;--radius-lg: 24px;--radius-md: 18px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;color:var(--text);font-family:Avenir Next,Segoe UI Variable,PingFang SC,Hiragino Sans GB,Microsoft YaHei,system-ui,sans-serif;font-size:14px;background:radial-gradient(circle at 12% 12%,rgba(123,224,195,.15),transparent 24%),radial-gradient(circle at 82% 8%,rgba(255,179,107,.13),transparent 22%),radial-gradient(circle at 72% 86%,rgba(159,139,255,.14),transparent 24%),linear-gradient(180deg,#070b11,#0c1117 35%,#111826)}a,button,input,select{font:inherit}button{cursor:pointer}button,input,select{border:0}#app{min-height:100vh}.app-shell{width:min(1440px,calc(100vw - 24px));margin:0 auto;padding:14px 0 28px;position:relative;z-index:1}.topbar,.card{border:1px solid var(--line);background:var(--surface);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:0 24px 70px #00000042}.topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 18px;border-radius:22px;position:sticky;top:12px;z-index:10;margin-bottom:18px}.brand{display:inline-flex;align-items:center;gap:14px;color:inherit;text-decoration:none}.brand-mark{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:15px;background:linear-gradient(135deg,#7be0c32e,#4cb6ff33 50%,#9f8bff38);border:1px solid rgba(255,255,255,.16)}.brand-logo{width:30px;height:30px;object-fit:contain;border-radius:8px;filter:saturate(1.08) hue-rotate(-8deg) contrast(1.05) drop-shadow(0 2px 6px rgba(123,224,195,.35))}.brand-copy strong,.footer strong{display:block;font-size:1rem;letter-spacing:.02em}.brand-copy small,.footer p,.section-head p,.hero-copy p,.modal-copy p,.control span,.summary-card span,.stat span{color:var(--muted)}.nav{display:flex;gap:20px}.nav a,.footer-links button{color:var(--muted);text-decoration:none;background:transparent;padding:8px 10px;border-radius:999px;transition:color .2s ease,background .2s ease,transform .2s ease}.nav a:hover,.footer-links button:hover{color:var(--text);background:#ffffff0f;transform:translateY(-1px)}.topbar-actions,.hero-actions,.panel-actions,.export-row,.modal-actions{display:flex;gap:12px;flex-wrap:wrap}.btn,.tool,.mini-btn,.palette-tab,.swatch,.link-button{transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease}.btn:hover,.tool:hover,.mini-btn:hover,.palette-tab:hover,.swatch:hover,.link-button:hover{transform:translateY(-1px)}.btn{border-radius:999px;padding:9px 14px;font-weight:700;font-size:.92rem}.btn-primary{color:#08141c;background:linear-gradient(135deg,#7be0c3,#4cb6ff);box-shadow:0 12px 26px #4cb6ff38}.btn-secondary{color:var(--text);background:linear-gradient(135deg,#ffb36b2e,#9f8bff29);border:1px solid rgba(255,255,255,.1)}.btn-ghost{color:var(--text);background:#ffffff0a;border:1px solid var(--line)}.layout,.hero,.builder,.faq{display:grid;gap:18px}.hero{grid-template-columns:.95fr 1.05fr}.card{border-radius:26px}.hero-copy,.hero-visual,.panel,.section-head,.mini-feature,.faq-list details{padding:22px}.hero-copy{border-radius:var(--radius-xl)}.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;color:#cff9ee;background:#7be0c31a;border:1px solid rgba(123,224,195,.16);font-size:.84rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.hero h1{margin:14px 0 12px;font-size:clamp(2.3rem,3.6vw,4.8rem);line-height:1;letter-spacing:-.05em;max-width:13ch}.hero-copy p{font-size:1.04rem;line-height:1.8;max-width:62ch}.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}.stat,.summary-card,.control,.faq-list details,.modal{border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.08);background:#ffffff08}.stat{padding:14px 16px}.stat strong,.summary-card strong{display:block;font-size:1.3rem}.hero-visual{display:flex;align-items:stretch}.hero-window{width:100%;border-radius:22px;overflow:hidden;background:radial-gradient(circle at 15% 20%,rgba(123,224,195,.12),transparent 24%),radial-gradient(circle at 85% 14%,rgba(255,179,107,.12),transparent 24%),linear-gradient(145deg,#101822eb,#0b1018fa);border:1px solid rgba(255,255,255,.06)}.window-bar{display:flex;gap:8px;padding:16px 18px 0}.window-bar span{width:11px;height:11px;border-radius:999px;background:#ffffff29}.hero-window canvas{width:100%;height:auto;display:block}.hero-caption{padding:0 18px 16px;color:var(--muted);font-size:.92rem}.builder{grid-template-columns:minmax(0,360px) minmax(0,1fr);align-items:stretch;min-height:calc(100vh - 120px)}.panel{height:100%;min-width:0}.panel-left,.panel-right{min-height:0;max-height:calc(100vh - 120px);overflow-y:auto;overflow-x:hidden}.panel-head,.panel-inline-head,.canvas-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px}.panel h2,.section-head h2{margin:8px 0 0;font-size:1.35rem;letter-spacing:-.04em}.dropzone{display:grid;gap:10px;place-items:center;text-align:center;padding:20px;margin-top:18px;border-radius:24px;border:1.5px dashed rgba(123,224,195,.28);background:#ffffff08;cursor:pointer}.dropzone.dragover{background:#7be0c314;border-color:#7be0c37a}.dropzone-icon{width:58px;height:58px;display:grid;place-items:center;border-radius:18px;color:#08141c;font-size:1.3rem;font-weight:900;background:linear-gradient(135deg,#7be0c3,#4cb6ff)}.dropzone strong{font-size:.98rem}.dropzone small{color:var(--muted)}.controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:16px}.control{padding:10px 12px}.control>div,.summary-card{display:flex;align-items:baseline;justify-content:space-between;gap:8px}.control input,.control select{width:100%}input[type=range]{accent-color:var(--brand)}select{color:#edf3ff;background:#1a2332;border:1px solid rgba(255,255,255,.15);border-radius:14px;padding:8px 10px}select option{color:#edf3ff;background:#1a2332}.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}.tool,.mini-btn,.palette-tab,.swatch,.link-button{border-radius:999px;color:var(--text);background:#ffffff0a}.tool{padding:8px 12px;border:1px solid var(--line);font-size:.9rem}.tool.active{background:#7be0c31f;border-color:#7be0c352}.palette-section{margin-top:16px;display:grid;gap:12px}.palette-tabs{display:flex;flex-wrap:wrap;gap:8px}.palette-tab{padding:8px 12px;border:1px solid var(--line);font-size:.9rem}.palette-tab.active{background:#9f8bff21;border-color:#9f8bff57}.palette-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(52px,1fr));gap:10px}.swatch{aspect-ratio:1;border:1px solid rgba(255,255,255,.1);overflow:hidden;position:relative}.swatch.selected{outline:3px solid rgba(255,255,255,.82)}.canvas-shell{margin-top:14px;padding:14px;border-radius:22px;background:#ffffff08;border:1px solid var(--line);min-width:0}.panel-right{display:grid;gap:14px;min-width:0}.panel-right .canvas-shell,.panel-right .summary-grid,.panel-right .export-row{margin-top:0}.canvas-wrap{margin-top:12px;overflow:auto;max-height:min(70vh,820px);width:100%;min-width:0;border-radius:20px;position:relative;background:linear-gradient(45deg,rgba(255,255,255,.03) 25%,transparent 25%,transparent 75%,rgba(255,255,255,.03) 75%,rgba(255,255,255,.03)),linear-gradient(45deg,rgba(255,255,255,.03) 25%,transparent 25%,transparent 75%,rgba(255,255,255,.03) 75%,rgba(255,255,255,.03));background-size:24px 24px;background-position:0 0,12px 12px;border:1px solid var(--line)}.canvas-wrap canvas{display:block;width:auto;max-width:none;height:auto;max-height:none;position:relative;z-index:1;margin:0 auto}.canvas-empty{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-content:center;gap:8px;text-align:center;padding:24px;z-index:2;pointer-events:none;background:radial-gradient(circle at 50% 45%,rgba(123,224,195,.08),transparent 45%)}.canvas-empty strong{font-size:1.06rem;letter-spacing:.01em}.canvas-empty p{margin:0;color:var(--muted)}.mini-btn{width:38px;height:38px;border:1px solid var(--line)}.summary-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:0}.summary-card{padding:10px 12px}.summary-card strong{font-size:1.05rem}.faq{grid-template-columns:1fr}.section-head{display:grid;gap:8px;padding-bottom:0}.feature-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.mini-feature{min-height:170px;border-radius:22px;border:1px solid var(--line);background:#ffffff08}.mini-feature strong{display:block;margin-bottom:8px;font-size:1rem}.mini-feature p{margin:0;color:var(--muted);line-height:1.7}.mini-feature:nth-child(1){background:linear-gradient(180deg,#7be0c31a,#ffffff05)}.mini-feature:nth-child(2){background:linear-gradient(180deg,#9f8bff1a,#ffffff05)}.mini-feature:nth-child(3){background:linear-gradient(180deg,#ffb36b1a,#ffffff05)}.mini-feature:nth-child(4){background:linear-gradient(180deg,#ff6d5c14,#ffffff05)}.faq-list{display:grid;gap:14px}.faq-list details{padding:18px 20px}.faq-list summary{cursor:pointer;font-weight:700}.footer{margin-top:18px;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.footer-links{display:flex;flex-wrap:wrap;gap:8px}.link-button{padding:9px 12px;border:1px solid var(--line)}.modal-layer{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;padding:18px;background:#05080cb3;z-index:20}.modal-layer[hidden]{display:none!important}.license-modal,.buy-modal{width:min(620px,100%);border-radius:24px;background:#f5f6fa;color:#1e2736;box-shadow:0 24px 60px #00000059;overflow:hidden}.license-modal-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:22px 24px 14px;border-bottom:1px solid rgba(20,30,45,.09)}.license-modal-head h3{margin:0;font-size:2rem;letter-spacing:-.04em}.icon-close{width:36px;height:36px;border-radius:10px;background:transparent;color:#627186;font-size:2rem;line-height:1}.license-tip,.buy-copy{margin:0;padding:14px 24px;color:#4a5a71;line-height:1.6;border-bottom:1px solid rgba(20,30,45,.09)}.license-label{display:block;margin:16px 24px 8px;color:#3d4b63;font-size:1.02rem}.license-input{width:calc(100% - 48px);margin:0 24px;border-radius:14px;border:1px solid #c7d0df;background:#fff;color:#213149;font-size:1.9rem;padding:14px 16px}.license-input:focus{outline:2px solid rgba(55,120,233,.28)}.license-error{min-height:24px;margin:8px 24px 0;color:#d14e4e;font-size:.94rem}.license-actions,.buy-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:14px 24px 24px}.buy-actions{grid-template-columns:1fr}.buy-link{display:inline-flex;margin:14px 24px 0;color:#2f77e8;text-decoration:none;font-weight:700}.buy-qr-wrap{margin:14px 24px 0;border-radius:16px;border:1px solid rgba(20,30,45,.1);background:#fff;padding:12px;display:grid;place-items:center}.buy-qr{width:min(100%,420px);border-radius:12px;display:block}.buy-qr-placeholder{min-height:180px;width:100%;display:grid;place-items:center;border:1px dashed #ced5e1;border-radius:12px;color:#6a778c;padding:12px;text-align:center}.modal{width:min(720px,100%);padding:0;overflow:hidden;max-height:calc(100vh - 32px)}.modal-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:18px 22px;border-bottom:1px solid var(--line)}.modal-body{padding:22px;overflow:auto}.modal-copy h4{margin:0 0 8px;font-size:1.2rem}.modal-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}.guide-steps{display:grid;gap:12px;margin-top:18px}.guide-step{padding:14px 16px;border-radius:18px;background:#ffffff0a;border:1px solid var(--line)}.guide-step strong{display:block;margin-bottom:6px}.guide-step p{margin:0;color:var(--muted);line-height:1.7}.sample-tile{height:120px;border-radius:18px;background:linear-gradient(140deg,#7be0c357,#ffb36b66);position:relative;overflow:hidden}.sample-tile:before{content:"";position:absolute;top:16px;right:16px;bottom:16px;left:16px;border-radius:14px;background:radial-gradient(circle at 30% 32%,#7be0c3 0 16%,transparent 16.5%),radial-gradient(circle at 64% 28%,#ffb36b 0 13%,transparent 13.5%),radial-gradient(circle at 52% 64%,#9f8bff 0 18%,transparent 18.5%)}.sample-tile.alt{background:linear-gradient(140deg,#ffb36b57,#9f8bff66)}.sample-tile.alt-2{background:linear-gradient(140deg,#ff6d5c47,#4cb6ff57)}.pill{display:inline-flex;padding:9px 12px;border-radius:999px;border:1px solid var(--line);background:#ffffff0a}details>p{color:var(--muted);line-height:1.8}@media(max-width:1200px){.hero,.builder,.feature-strip,.summary-grid,.modal-grid{grid-template-columns:1fr}.nav{display:none}}@media(max-width:760px){.app-shell{width:min(100vw - 18px,1480px);padding-top:10px}.topbar{border-radius:20px;flex-wrap:wrap}.controls{grid-template-columns:1fr}.hero-copy,.hero-visual,.panel,.section-head,.mini-feature,.faq-list details,.footer{padding:18px}.hero h1{max-width:none}.hero-stats{grid-template-columns:1fr}.footer{flex-direction:column;align-items:flex-start}.license-modal-head h3{font-size:1.6rem}.license-actions{grid-template-columns:1fr}.license-input{font-size:1.2rem}}