:root{color-scheme:light;--bg:#fffaf8;--surface:#fff;--ink:#36272e;--muted:#77626c;--accent:#bf486c;--soft:#fbe7ee;--line:#e8d8de;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink)}
:root[data-theme=dark]{color-scheme:dark;--bg:#191418;--surface:#251d23;--ink:#faedf3;--muted:#c1aeb8;--accent:#f095b1;--soft:#38232c;--line:#4c3542}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg:#191418;--surface:#251d23;--ink:#faedf3;--muted:#c1aeb8;--accent:#f095b1;--soft:#38232c;--line:#4c3542}}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0}button,input,textarea{font:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:4px}a{color:inherit}.masthead{display:flex;justify-content:space-between;align-items:center;max-width:960px;margin:auto;padding:24px 32px;font-size:11px;letter-spacing:2px}.masthead span:first-child{font-size:25px;font-weight:900;letter-spacing:0}.hero{background:var(--soft);position:relative;overflow:hidden;min-height:470px;display:flex;align-items:center;justify-content:center;gap:65px;padding:56px 32px}.hero-copy{max-width:410px;z-index:1;animation:arrive .55s ease-out both}.eyebrow{font-size:13px;letter-spacing:5px;color:var(--accent)}h1{font-size:52px;line-height:1.22;letter-spacing:-2px;margin:18px 0;font-weight:850;text-wrap:balance}#subtitle{font-size:15px;line-height:1.85;max-width:340px;color:var(--muted)}.hero-art{object-fit:contain;width:280px;height:280px;animation:arrive .7s .1s ease-out both;filter:drop-shadow(0 15px 30px #ad41651a)}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:24px;border:0;border-radius:12px;background:var(--accent);color:var(--bg);padding:16px 22px;font-weight:700;text-decoration:none;min-height:50px;transition:transform .15s,filter .15s}.button:hover{filter:brightness(1.07);transform:translateY(-2px)}.hero .button{margin-top:18px}#activity>section{max-width:900px;margin:0 auto;padding:54px 32px;border-bottom:1px solid var(--line)}.section-heading{display:flex;align-items:center;gap:14px}.number{font-size:12px;color:var(--accent);font-variant-numeric:tabular-nums}h2{font-size:24px;line-height:1.5;letter-spacing:-.5px;margin:0}.muted{color:var(--muted);font-size:13px;line-height:1.8}.tiers{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:0;margin-top:30px}.tier{padding:12px 20px;border-left:1px solid var(--line)}.tier:first-child{border-left:0;padding-left:0}.tier p{margin:0;color:var(--muted);font-size:12px}.tier strong{display:block;color:var(--accent);font-size:38px;line-height:1.65;font-weight:850}.tier span{font-size:12px;color:var(--muted)}.example-list{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:30px}.example-visual{height:200px;background:var(--soft);border-radius:18px;overflow:hidden;display:flex;align-items:center;justify-content:center;font-size:62px}.example-visual img{width:100%;height:100%;object-fit:cover;object-position:top}.example h3{font-size:16px;margin:18px 0 8px}.example p{font-size:13px;color:var(--muted);line-height:1.9}.rules ol{padding-left:20px;color:var(--muted);line-height:1.9;font-size:14px}.rules li{padding:9px 0 9px 8px}#activity>.submission{max-width:760px;margin:32px auto;padding:42px 32px;border:0;background:var(--soft);border-radius:24px}.submission h2{margin:10px 0 24px}label{display:block;font-size:14px;line-height:1.7;margin:12px 0}textarea,input{background:var(--surface);border:1px solid var(--line);border-radius:12px;color:var(--ink);padding:15px;font-size:16px;width:100%;resize:vertical}textarea::placeholder,input::placeholder{color:var(--muted);opacity:1}form .button{width:100%;margin-top:12px}.notice{padding:20px 24px;background:var(--soft);color:var(--muted);font-size:14px;line-height:1.8;text-align:center}.text-button,.notice button{color:var(--accent);background:none;border:0;text-decoration:underline;min-height:44px}#form-status,#contact-status{font-size:14px;line-height:1.7;color:var(--accent)}footer{max-width:900px;margin:0 auto;display:flex;justify-content:space-between;padding:16px 32px calc(32px + env(safe-area-inset-bottom));font-size:11px;color:var(--muted)}dialog{position:fixed;max-width:380px;width:calc(100% - 40px);max-height:85dvh;overflow:auto;background:var(--surface);color:var(--ink);border:0;border-radius:24px;padding:28px;animation:arrive .2s ease-out}dialog::backdrop{background:#190b1580}dialog img{display:block;margin:auto}dialog h2{text-align:center}dialog p{font-size:14px;line-height:1.8;color:var(--muted)}.close{position:absolute;right:10px;top:8px;width:44px;height:44px;border:0;background:transparent;color:var(--muted);font-size:28px}[hidden]{display:none!important}@keyframes arrive{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:600px){.masthead{padding:18px 22px}.hero{min-height:410px;padding:32px 22px 38px;gap:0;align-items:flex-start;justify-content:flex-start}.hero-copy{max-width:245px}.eyebrow{font-size:11px}h1{font-size:37px;max-width:230px;letter-spacing:-1px}#subtitle{font-size:13px;max-width:225px}.hero-art{position:absolute;right:-6px;bottom:34px;width:145px;height:145px}.hero .button{font-size:14px;gap:18px;padding:15px 18px}.hero-copy .button{margin-top:26px}#activity>section{padding:36px 22px}h2{font-size:20px}.tiers{grid-template-columns:repeat(2,1fr);row-gap:22px}.tier:nth-child(odd){padding-left:0;border-left:0}.tier strong{font-size:36px}.example-list{grid-template-columns:1fr;gap:24px}.example{display:grid;grid-template-columns:95px 1fr;column-gap:18px}.example-visual{grid-row:span 2;height:110px;border-radius:12px;font-size:38px}.example h3{margin:3px 0 5px}.example p{margin:0;font-size:12px}.rules ol{font-size:13px}#activity>.submission{margin:12px;border-radius:18px;padding:26px 20px}footer{padding:22px 22px calc(24px + env(safe-area-inset-bottom));font-size:10px;gap:12px}.submission{scroll-margin-top:16px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}