:root{color-scheme:dark;--base: #1e1e2e;--mantle: #181825;--surface-0: #313244;--surface-1: #45475a;--surface-2: #585b70;--text: #cdd6f4;--subtext-0: #a6adc8;--subtext-1: #bac2de;--overlay-0: #6c7086;--blue: #89b4fa;--lavender: #b4befe;--green: #a6e3a1;--red: #f38ba8;--peach: #fab387;--border: rgba(205, 214, 244, .12);--shadow: 0 28px 80px rgba(0, 0, 0, .28)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at top,rgba(137,180,250,.12),transparent 28%),linear-gradient(180deg,#11111b 0%,var(--base) 100%);color:var(--text);font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}button,input{font:inherit}#root{min-height:100vh}.page-shell{min-height:100vh;display:grid;place-items:center;padding:32px 18px}.upload-panel{width:min(960px,100%);padding:28px;border:1px solid var(--border);border-radius:28px;background:#181825e6;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.shell-panel{text-align:center}.hero{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:24px}.brand-lockup{display:flex;align-items:center;gap:16px}.brand-logo{width:56px;height:56px;border-radius:18px}.brand-logo{object-fit:cover;border:1px solid var(--border);background:var(--surface-0)}.eyebrow{margin:0 0 6px;color:var(--blue);font-size:12px;letter-spacing:.24em;text-transform:uppercase}h1{margin:0;font-size:clamp(32px,5vw,48px);line-height:1.04;letter-spacing:.04em}.info-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:20px}.info-card,.status-panel,.tips-panel,.dropzone{border:1px solid var(--border);background:#1e1e2ed1}.info-card{padding:16px;border-radius:20px}.info-label,.status-label{margin:0 0 10px;color:var(--overlay-0);font-size:12px;letter-spacing:.14em;text-transform:uppercase}.info-value,.status-value{margin:0;line-height:1.6}.is-monospace{font-family:JetBrains Mono,SFMono-Regular,monospace;word-break:break-all}.dropzone{position:relative;border-radius:26px;margin-bottom:20px;min-height:280px;overflow:hidden}.dropzone.is-dragging{border-color:#89b4fa99;box-shadow:inset 0 0 0 1px #89b4fa42}.dropzone-inner{min-height:280px;padding:24px;display:grid;place-items:center;text-align:center}.dropzone-title{margin:0 0 8px;font-size:clamp(28px,4vw,40px);letter-spacing:.08em}.dropzone-subtitle,.shell-description{margin:0;color:var(--subtext-0);line-height:1.7}.file-input{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;pointer-events:none}.action-row{display:flex;gap:12px;margin-top:24px;flex-wrap:wrap;justify-content:center}.primary-button,.secondary-button{min-width:144px;padding:13px 18px;border-radius:999px;border:1px solid var(--border);transition:transform .16s ease,border-color .16s ease,background .16s ease;cursor:pointer}.primary-button{background:var(--blue);color:#11111b;border-color:transparent}.secondary-button{background:transparent;color:var(--text)}.primary-button:hover,.secondary-button:hover{transform:translateY(-1px)}.secondary-button:disabled{opacity:.42;cursor:not-allowed;transform:none}.status-panel,.tips-panel{border-radius:22px;padding:18px}.status-panel{display:grid;gap:16px;margin-bottom:16px}.status-block{padding-bottom:14px;border-bottom:1px solid rgba(205,214,244,.08)}.status-block:last-child{padding-bottom:0;border-bottom:0}.is-error{color:var(--red)}.is-ok{color:var(--green)}.tips-panel{display:grid;gap:10px;color:var(--subtext-0)}.tips-panel p{margin:0}@media (max-width: 840px){.upload-panel{padding:20px;border-radius:22px}.hero{flex-direction:column}.info-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width: 560px){.page-shell{padding:12px}.info-grid{grid-template-columns:1fr}.dropzone-inner{padding:18px}.action-row,.primary-button,.secondary-button{width:100%}}