:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f4efe6;--ink:#1e2321;--muted:#63706c;--panel:#fffaf0db;--panel-strong:#fff8eaf5;--line:#1e23211f;--accent:#0f766e;--accent-deep:#134e4a;--warm:#c67b34;--shadow:0 24px 60px #252a2824}*{box-sizing:border-box}html,body{min-height:100%;margin:0}body{background:radial-gradient(circle at top left, #c67b3429, transparent 32%), radial-gradient(circle at top right, #0f766e2e, transparent 28%), linear-gradient(180deg, #f9f4eb 0%, var(--bg) 100%);color:var(--ink);font-family:Hiragino Sans GB,PingFang SC,Microsoft YaHei,sans-serif}button,input{font:inherit}.page-shell{min-height:100vh;padding:40px 20px 72px}.hero-card{border:1px solid var(--line);background:linear-gradient(180deg, var(--panel) 0%, var(--panel-strong) 100%);width:min(920px,100%);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:28px;margin:0 auto;padding:36px}.hero-copy h1{letter-spacing:-.05em;margin:8px 0 14px;font-size:clamp(2.1rem,5vw,4.4rem);line-height:.98}.eyebrow{color:var(--accent);text-transform:uppercase;letter-spacing:.22em;margin:0;font-size:.84rem;font-weight:700}.lead{max-width:650px;color:var(--muted);margin:0;font-size:1.05rem;line-height:1.7}.upload-panel,.result-panel{background:#ffffffb8;border:1px solid #0f766e1f;border-radius:22px;margin-top:28px;padding:22px}.file-picker{color:var(--ink);gap:10px;font-weight:700;display:grid}.file-picker input{background:#ffffffd6;border:1px dashed #0f766e59;border-radius:16px;padding:16px}.file-meta{color:var(--muted);justify-content:space-between;gap:16px;margin-top:14px;font-size:.94rem;display:flex}.primary-button,.secondary-button{appearance:none;cursor:pointer;border:0;border-radius:999px;padding:14px 20px;transition:transform .16s,opacity .16s,box-shadow .16s}.primary-button{background:linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);color:#fff;min-width:160px;margin-top:18px;font-weight:700;box-shadow:0 18px 34px #0f766e3d}.secondary-button{color:var(--ink);background:#fff;border:1px solid #1e23211a;font-weight:700}.primary-button:hover,.secondary-button:hover{transform:translateY(-1px)}.primary-button:disabled{cursor:wait;opacity:.7;transform:none}.status{margin-top:14px;font-size:.95rem}.status.error{color:#b42318}.summary-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;display:grid}.summary-grid article{background:#f5f0e4eb;border:1px solid #1e232114;border-radius:18px;padding:16px}.summary-grid span{color:var(--muted);font-size:.88rem;display:block}.summary-grid strong{letter-spacing:-.04em;margin-top:8px;font-size:1.6rem;display:block}.download-actions{flex-wrap:wrap;gap:12px;margin-top:20px;display:flex}@media (max-width:720px){.hero-card{border-radius:24px;padding:24px}.summary-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.file-meta{flex-direction:column}}