:root { --bg:#f6f5f1; --surface:#ffffff; --surface-2:#eeede7; --ink:#24231f; --ink-2:#56544c; --muted:#6b685d; --line:#e7e5dc; --line-strong:#d9d6ca; --accent:#5f7c61; --accent-deep:#42584a; --accent-soft:#e6ece1; --ok:#4f9d6b; --danger:#b0594b; --shadow-sm:0 1px 2px rgba(36,35,31,0.05),0 4px 12px rgba(36,35,31,0.05); --radius:18px; --font-display:'Space Grotesk','PingFang SC','Microsoft YaHei',system-ui,sans-serif; --font-body:'Inter','PingFang SC','Microsoft YaHei',system-ui,sans-serif; --font-mono:'IBM Plex Mono','SFMono-Regular',Consolas,monospace; }
* { box-sizing:border-box; } html,body{margin:0;min-height:100%;} body{background:var(--bg);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased;}
body::before{content:'';position:fixed;inset:0;z-index:0;pointer-events:none;opacity:0.04;mix-blend-mode:multiply;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");}
button,input,textarea{font:inherit;color:inherit;} button{cursor:pointer;background:none;border:none;padding:0;} a{color:inherit;} :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
.garden{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none;background:radial-gradient(1100px 640px at 82% -8%,rgba(95,124,97,0.1),transparent 62%),radial-gradient(820px 560px at 2% 16%,rgba(95,124,97,0.07),transparent 60%),radial-gradient(960px 720px at 92% 104%,rgba(95,124,97,0.09),transparent 66%);}
.shell{position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column;}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px clamp(20px,5vw,72px);border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(8px);position:sticky;top:0;}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;} .brand__mark{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;box-shadow:var(--shadow-sm);} .brand__mark svg{width:36px;height:36px;display:block;} .brand__word{display:flex;flex-direction:column;line-height:1.15;} .brand__word strong{font-family:var(--font-display);font-size:16px;font-weight:700;} .brand__word small{margin-top:4px;font-family:var(--font-mono);font-size:9px;letter-spacing:0.22em;color:var(--muted);}
.topbar__meta{display:flex;align-items:center;gap:22px;} .back{font-size:13px;color:var(--muted);text-decoration:none;} .back:hover{color:var(--accent-deep);} .status{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);} .status__dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(79,157,107,0.14);}
.main{flex:1;width:min(860px,calc(100% - 40px));margin:0 auto;padding:40px 0 72px;}
.hero{max-width:760px;margin-bottom:36px;} .eyebrow{display:flex;align-items:center;gap:12px;margin:0 0 16px;font-family:var(--font-mono);font-size:12px;letter-spacing:0.16em;color:var(--muted);text-transform:uppercase;} .eyebrow__rule{width:34px;height:2px;background:var(--accent);border-radius:1px;} .hero__title{margin:0 0 14px;font-family:var(--font-display);font-size:clamp(25px,5vw,40px);font-weight:700;line-height:1.05;} .hero__dot{color:var(--accent);} .hero__lead{margin:0;font-size:16px;line-height:1.7;color:var(--ink-2);max-width:640px;}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;} .panel__title{margin:0;padding:14px 20px;font-size:12px;font-weight:600;letter-spacing:0.08em;color:var(--ink-2);text-transform:uppercase;background:var(--surface-2);border-bottom:1px solid var(--line);} .panel__body{padding:20px;display:flex;flex-direction:column;gap:16px;}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.segmented{display:inline-flex;border:1px solid var(--line-strong);border-radius:10px;overflow:hidden;background:var(--surface-2);} .segmented button{padding:9px 18px;font-family:var(--font-mono);font-size:13px;color:var(--ink-2);} .segmented button.is-active{background:var(--accent);color:#fff;} .segmented button:not(.is-active):hover{color:var(--accent-deep);}
textarea{width:100%;min-height:180px;border:1px solid var(--line-strong);border-radius:12px;background:var(--surface);padding:14px;font-family:var(--font-mono);font-size:13px;line-height:1.6;color:var(--ink);resize:vertical;outline:none;} textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(95,124,97,0.14);}
.dropzone{display:flex;align-items:center;justify-content:center;min-height:180px;padding:20px;text-align:center;border:2px dashed var(--line-strong);border-radius:12px;background:var(--surface-2);cursor:pointer;font-size:14px;color:var(--muted);transition:all 0.18s ease;} .dropzone:hover,.dropzone.is-dragover{border-color:var(--accent);background:var(--accent-soft);color:var(--ink);}
.output-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;} .output-row__label{flex-shrink:0;font-size:13px;color:var(--ink);min-width:64px;} .field__control{flex:1;min-width:200px;display:flex;align-items:center;border:1px solid var(--line-strong);border-radius:10px;background:var(--surface);} .field__control input{flex:1;min-width:0;border:none;background:none;padding:11px 14px;font-family:var(--font-mono);font-size:13px;color:var(--ink);outline:none;}
.btn{padding:10px 18px;border-radius:10px;font-size:13.5px;font-weight:600;background:var(--accent);color:#fff;} .btn:hover{background:var(--accent-deep);} .btn--ghost{background:var(--surface);color:var(--ink-2);border:1px solid var(--line-strong);} .btn--ghost:hover{background:var(--surface-2);color:var(--ink);} .btn.is-on{background:var(--accent-soft);color:var(--accent-deep);border-color:var(--accent);}
.statusbar{padding:11px 14px;border-radius:10px;font-size:13px;color:var(--muted);background:var(--surface-2);} .statusbar--ok{color:var(--ok);background:rgba(79,157,107,0.08);} .statusbar--err{color:var(--danger);background:rgba(176,89,75,0.08);}
.footer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px clamp(20px,5vw,72px);border-top:1px solid var(--line);font-size:12px;color:var(--muted);} @media(max-width:600px){.footer{flex-direction:column;align-items:flex-start;}}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}