:root{--brand: #1a7f37;--brand-dark: #136b2c;--brand-soft: #e6f4ea;--ink: #1a1f2b;--ink-soft: #4b5264;--muted: #6b7280;--line: #e5e7eb;--bg: #ffffff;--bg-muted: #f7f8fa;--add: #1a7f37;--add-bg: #e6f4ea;--remove: #cf222e;--remove-bg: #fde2e4;--modify: #9a6700;--modify-bg: #fff4d6;--accent: #0b6bcb;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--r-sm: 6px;--r-md: 10px;--r-lg: 14px;--shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);--shadow-md: 0 4px 12px rgba(16, 24, 40, .1);--shadow-lg: 0 12px 32px rgba(16, 24, 40, .14)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer}input,select{font-family:inherit}.container{max-width:1120px;margin:0 auto;padding:0 20px}.sheet{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-sm)}.card{padding:20px 24px}.topbar{border-bottom:1px solid var(--line);background:#ffffffd9;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);position:sticky;top:0;z-index:20}.topbar-inner{display:flex;align-items:center;gap:18px;height:60px}.brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:17px;color:var(--ink)}.brand b{color:var(--brand)}.brand:hover{text-decoration:none}.nav-links{display:flex;gap:16px;margin-left:8px}.nav-links a{color:var(--ink-soft);font-weight:500;font-size:14px}.nav-links a.active{color:var(--brand)}.topbar .spacer{flex:1}.meter-pill{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;font-weight:600;color:var(--ink-soft);background:var(--bg-muted);border:1px solid var(--line);padding:5px 10px;border-radius:999px}.meter-pill .plan-badge{background:var(--brand);color:#fff;border-radius:999px;padding:1px 8px;font-size:11px;text-transform:uppercase;letter-spacing:.03em}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--r-sm);padding:9px 16px;font-size:14px;font-weight:600;line-height:1.2;transition:background .12s,transform .04s,box-shadow .12s;text-decoration:none;white-space:nowrap}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover{background:var(--brand-dark);text-decoration:none}.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}.btn-outline:hover{border-color:var(--ink-soft);text-decoration:none}.btn-ghost{background:transparent;color:var(--ink-soft)}.btn-ghost:hover{color:var(--ink);background:var(--bg-muted)}.btn-block{width:100%}.btn-lg{padding:12px 22px;font-size:15px}.btn:disabled{opacity:.55;cursor:not-allowed}.field{margin-bottom:14px;display:flex;flex-direction:column;gap:6px}.field label{font-size:13px;font-weight:600;color:var(--ink-soft)}.input,select.input,textarea.input{border:1px solid var(--line);border-radius:var(--r-sm);padding:10px 12px;font-size:14px;background:#fff;color:var(--ink);width:100%}.input:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:transparent}.alert{border-radius:var(--r-sm);padding:11px 14px;font-size:13.5px;border:1px solid;margin-bottom:14px}.alert-error{background:var(--remove-bg);color:#8a1b22;border-color:#f5c2c7}.alert-success{background:var(--add-bg);color:#14602a;border-color:#bfe3c9}.alert-info{background:#eaf3fc;color:#0b5ca8;border-color:#c3ddf0}.hero{padding:72px 0 40px;text-align:center}.hero h1{font-size:42px;line-height:1.1;letter-spacing:-.02em;margin:0 0 14px}.hero h1 em{font-style:normal;color:var(--brand)}.hero .sub{font-size:18px;color:var(--ink-soft);max-width:640px;margin:0 auto 26px}.hero .cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.hero .hint{margin-top:14px;font-size:13px;color:var(--muted)}.band{padding:48px 0;background:var(--bg-muted);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.band-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}.feature{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-md);padding:18px;box-shadow:var(--shadow-sm)}.feature h3{margin:0 0 6px;font-size:16px}.feature p{margin:0;font-size:13.5px;color:var(--ink-soft)}.feature .ico{font-size:22px}.section-title{font-size:26px;margin:0 0 18px;letter-spacing:-.01em}article.two-col{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:48px 0}article.two-col h2{font-size:24px;margin:0 0 12px}article.two-col p{color:var(--ink-soft);margin:0 0 10px;font-size:15px}.auth-wrap{max-width:400px;margin:48px auto}.auth-wrap h2{font-size:24px;margin:0 0 4px}.auth-wrap .sub{color:var(--ink-soft);font-size:14px;margin:0 0 20px}.auth-switch{text-align:center;margin-top:16px;font-size:14px;color:var(--ink-soft)}.dropzone{border:2px dashed var(--line);border-radius:var(--r-md);padding:26px 18px;text-align:center;cursor:pointer;background:var(--bg-muted);transition:border-color .12s,background .12s;min-height:120px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--ink-soft);font-size:14px}.dropzone.drag,.dropzone:hover{border-color:var(--brand);background:var(--brand-soft)}.dropzone.readonly{pointer-events:none;opacity:.85}.dropzone .file{font-weight:600;color:var(--ink)}.upload-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.upload-col-title{display:flex;justify-content:space-between;font-size:13px;font-weight:600;color:var(--ink-soft);margin-bottom:8px}.upload-swap{display:flex;justify-content:center;margin:10px 0}.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 18px;border-bottom:1px solid var(--line)}.toolbar .filename{font-weight:600;font-size:13.5px;color:var(--ink);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.legend{display:inline-flex;gap:12px;font-size:12px;color:var(--ink-soft)}.legend .sw{display:inline-flex;align-items:center;gap:5px}.legend .dot{width:11px;height:11px;border-radius:3px;display:inline-block}.chip{display:inline-flex;align-items:center;gap:6px;background:var(--bg-muted);border:1px solid var(--line);border-radius:999px;padding:4px 10px;font-size:12.5px;color:var(--ink-soft);font-weight:500}.viewer{display:grid;grid-template-columns:1fr 1fr;gap:0;border-bottom:1px solid var(--line)}.pane{padding:18px 20px}.pane-head{display:flex;align-items:center;gap:8px;padding:10px 20px;border-bottom:1px solid var(--line);background:var(--bg-muted);font-size:13px;font-weight:600;color:var(--ink-soft)}.pane.left{border-right:1px solid var(--line)}.pane-head .fmt{text-transform:uppercase;font-size:11px;letter-spacing:.04em;background:var(--bg);border:1px solid var(--line);border-radius:4px;padding:1px 6px;color:var(--muted)}.blocks{font-size:14.5px;line-height:1.65;color:#2c3242}.blk{margin-bottom:12px}.blk-label{font-size:11.5px;color:var(--muted);font-weight:600;margin-bottom:3px;text-transform:uppercase;letter-spacing:.03em}.unified-text{white-space:pre-wrap}.htext span.hl{border-radius:3px;padding:1px 2px;margin:-1px}.htext span.add{background:var(--add-bg);color:#0c5c27}.htext span.remove{background:var(--remove-bg);color:#8a1b22;text-decoration:line-through}.htext span.modify{background:var(--modify-bg);color:#6b4700}.htext span.hl.add-marker{box-shadow:inset 2px 0 0 var(--add)}.htext span.hl.remove-marker{box-shadow:inset 2px 0 0 var(--remove)}.htext span.hl.modify-marker{box-shadow:inset 2px 0 0 var(--modify)}.htext span.ctx-active{outline:2px solid var(--accent);outline-offset:1px;border-radius:3px}.change-list{padding:12px 18px}.change-nav{display:flex;align-items:center;gap:8px}.change-item{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--line);border-radius:var(--r-sm);margin-bottom:8px;cursor:pointer;background:var(--bg);transition:border-color .1s,box-shadow .1s}.change-item:hover{border-color:var(--accent)}.change-item.active{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.change-item .tag{font-size:11px;font-weight:700;border-radius:4px;padding:2px 7px;color:#fff;white-space:nowrap}.tag.add{background:var(--add)}.tag.remove{background:var(--remove)}.tag.modify{background:var(--modify)}.change-item .txt{font-size:13px;color:var(--ink-soft)}.change-item .txt b{color:var(--ink);font-weight:600}.translate-panel{border-top:1px solid var(--line);padding:16px 20px;background:var(--bg-muted)}.translate-panel h4{margin:0 0 4px;font-size:15px}.translate-panel .from{font-size:13px;color:var(--ink-soft);margin-bottom:10px}.translate-panel .from text{background:var(--modify-bg);padding:0 3px;border-radius:3px}.translate-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.translate-row select,.translate-row .btn{flex:0 0 auto}.translate-result{margin-top:12px;border-left:3px solid var(--brand);padding:10px 14px;background:var(--add-bg);border-radius:0 var(--r-sm) var(--r-sm) 0}.translate-result .out{font-size:15px}.meter-note{font-size:12px;color:var(--muted);margin-top:8px}.gate{text-align:center;padding:34px 20px;background:linear-gradient(180deg,var(--brand-soft),#fff);border:1px solid var(--line);border-radius:var(--r-lg)}.gate h3{margin:0 0 6px;font-size:18px}.gate p{color:var(--ink-soft);margin:0 0 16px;font-size:14px}.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}.plan-card{border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;background:var(--bg);position:relative;display:flex;flex-direction:column}.plan-card.featured{border:2px solid var(--brand);box-shadow:var(--shadow-lg)}.plan-card .pop{position:absolute;top:-12px;left:50%;transform:translate(-50%);background:var(--brand);color:#fff;font-size:11px;font-weight:700;padding:3px 12px;border-radius:999px;letter-spacing:.03em;text-transform:uppercase}.plan-card h3{margin:0 0 4px;font-size:20px}.plan-card .price{font-size:30px;font-weight:700;margin:8px 0 2px}.plan-card .price span{font-size:14px;font-weight:500;color:var(--muted)}.plan-card .ann{font-size:12.5px;color:var(--brand-dark);font-weight:600;margin-bottom:10px}.plan-card .blurb{font-size:13.5px;color:var(--ink-soft);margin-bottom:16px}.plan-card ul{margin:0 0 18px;padding-left:18px;font-size:13.5px;color:var(--ink-soft)}.plan-card li{margin-bottom:5px}.plan-card .btn{margin-top:auto}.interval-toggle{display:inline-flex;gap:4px;background:var(--bg-muted);padding:4px;border-radius:999px;border:1px solid var(--line);margin-bottom:24px}.interval-toggle button{border:none;background:transparent;padding:7px 16px;border-radius:999px;font-size:13.5px;font-weight:600;color:var(--ink-soft)}.interval-toggle button.active{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}.account-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.quota-bar{height:10px;background:var(--bg-muted);border-radius:999px;overflow:hidden;border:1px solid var(--line);margin:10px 0 6px}.quota-fill{height:100%;background:var(--brand);transition:width .2s}.quota-fill.warn{background:var(--modify)}.quota-fill.danger{background:var(--remove)}.quota-nums{font-size:13px;color:var(--ink-soft);display:flex;justify-content:space-between}.list-item{display:flex;align-items:center;gap:14px;padding:14px 18px;border-bottom:1px solid var(--line)}.list-item:last-child{border-bottom:none}.list-item .lbl{font-size:13.5px;color:var(--ink-soft)}.status-badge{font-size:11.5px;font-weight:700;border-radius:999px;padding:3px 9px}.status-succeeded{background:var(--add-bg);color:#0c5c27}.status-failed{background:var(--remove-bg);color:#8a1b22}.status-pending,.status-processing{background:#eaf3fc;color:#0b5ca8}.footer{border-top:1px solid var(--line);color:var(--muted);font-size:13px;padding:22px 0;margin-top:56px}.footer-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}.center{text-align:center}.muted{color:var(--muted)}.mt{margin-top:18px}.mb{margin-bottom:18px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.spacer{flex:1}@media (max-width: 760px){.hero h1{font-size:32px}.viewer,.upload-grid,.account-grid,article.two-col{grid-template-columns:1fr}.pane.left{border-right:none;border-bottom:1px solid var(--line)}.topbar-inner{flex-wrap:wrap;height:auto;padding:10px 0;gap:10px}}