:root{--bg:#fafaf8;--panel:#fff;--ink:#16161a;--dim:#5d5d66;--faint:#9a9aa3;--line:#e6e4df;--accent:#6b4dff;--accent2:#5638f0;--ok:#11875d;--warn:#b4232c;--r:14px}
@media (prefers-color-scheme:dark){:root{--bg:#121214;--panel:#1b1b1f;--ink:#f1f1f3;--dim:#b4b4bc;--faint:#7d7d86;--line:#2c2c32}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent)}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
header.top{display:flex;align-items:center;justify-content:space-between;padding:18px 0}
.logo{font-weight:750;font-size:19px;letter-spacing:-.01em;color:var(--ink);text-decoration:none;display:flex;gap:8px;align-items:center}
.logo i{width:22px;height:22px;border-radius:6px;background:linear-gradient(135deg,var(--accent),#ff6b9a);display:inline-block}
nav a{color:var(--dim);text-decoration:none;margin-left:20px;font-size:15px}
.hero{text-align:center;padding:34px 0 12px}
.hero h1{font-size:clamp(30px,5vw,48px);line-height:1.1;letter-spacing:-.025em;margin:0 0 14px}
.hero p.sub{color:var(--dim);font-size:clamp(16px,2.2vw,19px);max-width:680px;margin:0 auto 26px}
.drop{border:2px dashed var(--line);border-radius:var(--r);background:var(--panel);padding:44px 20px;text-align:center;cursor:pointer;transition:.15s}
.drop:hover,.drop.over{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 5%,var(--panel))}
.drop b{font-size:19px}.drop small{display:block;color:var(--faint);margin-top:6px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:10px;padding:12px 20px;font:600 16px/1 inherit;cursor:pointer;background:var(--accent);color:#fff;text-decoration:none}
.btn:hover{background:var(--accent2)}.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn:disabled{opacity:.5;cursor:default}
.status{text-align:center;color:var(--dim);padding:30px 0}
.spin{width:28px;height:28px;border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;margin:0 auto 12px;animation:s 1s linear infinite}@keyframes s{to{transform:rotate(360deg)}}
.result{display:grid;grid-template-columns:1fr 300px;gap:20px;margin-top:10px}
@media (max-width:860px){.result{grid-template-columns:1fr}}
.viewer{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.tabs{display:flex;gap:4px;padding:8px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.tabs button{border:0;background:transparent;color:var(--dim);padding:8px 12px;border-radius:8px;font:500 14px inherit;cursor:pointer}
.tabs button.on{background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent)}
.tabs .sp{flex:1}
.stage{position:relative;overflow:auto;max-height:72vh;background:#fff;cursor:zoom-in;touch-action:pan-x pan-y}
.stage.zoomed{cursor:zoom-out}
.stage img{display:block;width:100%;height:auto;user-select:none;-webkit-user-drag:none}
.stage.zoomed img{width:auto;max-width:none}
.cmp{position:relative}.cmp .after{position:absolute;inset:0;overflow:hidden;width:50%;border-right:2px solid var(--accent)}
.cmp .after img{width:auto;height:100%;max-width:none}
.cmp input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize}
.side{display:flex;flex-direction:column;gap:14px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.card h3{margin:0 0 10px;font-size:16px}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:10px}.stats div{background:var(--bg);border-radius:10px;padding:10px}
.stats b{display:block;font-size:22px}.stats span{color:var(--faint);font-size:13px}
.price{display:flex;flex-direction:column;gap:10px}.price .btn{width:100%}
.price .note{color:var(--faint);font-size:13px;text-align:center}
.keyrow{display:flex;gap:6px}.keyrow input{flex:1;min-width:0;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:8px;padding:10px;font:14px ui-monospace,monospace}
.keybox{font:600 17px ui-monospace,monospace;background:var(--bg);padding:10px;border-radius:8px;text-align:center;user-select:all}
.err{color:var(--warn);font-size:14px}
.legend{display:flex;gap:14px;color:var(--faint);font-size:13px;padding:8px 12px;border-top:1px solid var(--line)}
.legend i{display:inline-block;width:9px;height:9px;margin-right:5px;vertical-align:middle;border:1.5px solid}
section.info{padding:56px 0 8px}
section.info h2{font-size:28px;letter-spacing:-.02em;margin:0 0 18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}@media (max-width:760px){.grid3{grid-template-columns:1fr}}
.grid3 .card p{color:var(--dim);margin:0;font-size:15px}
.plans{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;max-width:720px}@media (max-width:620px){.plans{grid-template-columns:1fr}}
.plans .amt{font-size:34px;font-weight:750}.plans ul{color:var(--dim);padding-left:18px;margin:8px 0 0}
details{border-bottom:1px solid var(--line);padding:14px 0}summary{cursor:pointer;font-weight:600}details p{color:var(--dim);margin:8px 0 0}
footer{color:var(--faint);font-size:14px;padding:40px 0;border-top:1px solid var(--line);margin-top:60px}
footer a{color:var(--faint)}
.hide{display:none!important}
.price .keyrow .btn{width:auto;flex:none}