:root,html[data-theme=light]{--ink:#153b32;--ink-soft:#5f766f;--muted:#73877f;--line:#1b534424;--line-strong:#1b53443d;--bg:#f5f3e9;--surface:#fffdf6e6;--panel:#fffdf7;--field:#faf9f1;--green:#1f765f;--green-soft:#dfeee5;--gold:#efc957;--shadow:0 24px 70px #23413614;--focus:#1f765f6b}
html[data-theme=dark]{--ink:#effcf9;--ink-soft:#c2d4d3;--muted:#8da7ab;--line:#94ddd426;--line-strong:#94ddd43d;--bg:#030e13;--surface:#071920d1;--panel:#071920;--field:#020e139e;--green:#62e7d0;--green-soft:#62e7d014;--gold:#ffc36d;--shadow:0 22px 70px #00000026;--focus:#62e7d094}
*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:14px;line-height:1.55}button,input{font:inherit}button,a,input,label{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:4px}[hidden]{display:none!important}.shell{width:min(1180px,100% - 64px);margin-inline:auto}.nav{height:88px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:12px;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--green);color:#fffaf0;font:800 14px ui-monospace,monospace}.brand strong{font-size:14px}.brand-divider,.brand-sub{color:var(--muted);font-size:12px}.brand-divider{margin-left:6px}.theme-switcher{display:flex;border:1px solid var(--line);padding:3px;border-radius:99px;background:var(--surface);gap:2px}.theme-switcher button{color:var(--muted);background:transparent;border:0;border-radius:99px;min-height:32px;padding:0 11px;font-size:11px}.theme-switcher button span{font:700 11px ui-monospace,monospace;margin-right:3px}.theme-switcher button[aria-pressed=true]{background:var(--green);color:#fffaf0}html[data-theme=dark] .theme-switcher button[aria-pressed=true],html[data-theme=dark] .brand-mark,html[data-theme=dark] .primary{color:#032018}.intro{padding:40px 0 32px;display:flex;align-items:center;justify-content:space-between;gap:24px}.eyebrow{font:600 10px ui-monospace,monospace;letter-spacing:.17em;color:var(--green);margin:0 0 12px}h1{font-family:"Songti SC",STSong,Georgia,serif;font-size:40px;line-height:1.25;letter-spacing:-.03em;margin:0}h1 span{color:var(--green);margin-left:.2em}.intro-copy{color:var(--ink-soft);margin:12px 0 0;font-size:13px}.edition{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:11px;white-space:nowrap}.status-dot{width:6px;height:6px;border-radius:50%;background:var(--green)}.workspace{display:grid;grid-template-columns:298px minmax(0,1fr);gap:32px;align-items:start}.settings-card{background:var(--panel);border:1px solid var(--line);padding:24px;border-radius:18px;box-shadow:var(--shadow)}.section-label,.preview-toolbar>div{display:flex;align-items:center;gap:10px}.step-number{font:500 11px ui-monospace,monospace;color:var(--green);border:1px solid var(--line-strong);border-radius:6px;padding:4px 6px;line-height:1}.section-label h2,.preview-toolbar h2{font-size:15px;margin:0;font-weight:650}fieldset{border:0;padding:0;margin:26px 0 0;min-width:0}legend{font-size:12px;font-weight:600;padding:0;margin-bottom:11px}.segmented{display:flex;border:1px solid var(--line);border-radius:9px;background:var(--field);padding:3px;gap:3px}.segmented label{flex:1;position:relative;cursor:pointer;text-align:center}.segmented input,.scope-options input{position:absolute;opacity:0;width:1px;height:1px}.segmented label span{display:block;padding:8px 0;border-radius:6px;color:var(--muted);font-size:12px}.segmented input:checked+span{background:var(--green);color:var(--bg);font-weight:650}.segmented input:focus-visible+span,.scope-options label:focus-within{outline:3px solid var(--focus);outline-offset:2px}.custom-row{display:flex;align-items:center;gap:8px;margin:12px 0 0;font-size:11px;color:var(--muted)}.custom-row input{width:68px;padding:7px;border:1px solid var(--line-strong);border-radius:7px;background:var(--field);color:var(--ink)}.scope-options{display:grid;gap:8px}.scope-options label{border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:space-between;padding:12px;position:relative;cursor:pointer;background:var(--field)}.scope-options strong{display:block;font-size:13px;font-weight:600}.scope-options small{display:block;font-size:10px;color:var(--muted);margin-top:2px}.scope-options label:has(input:checked){background:var(--green-soft);border-color:var(--green)}.selection-dot{width:14px;height:14px;border:1px solid var(--line-strong);border-radius:50%}.scope-options input:checked~.selection-dot{border:4px solid var(--green)}.ratio-panel{padding:18px 0 4px}.ratio-labels{display:flex;justify-content:space-between;font-size:11px;color:var(--ink-soft)}.ratio-labels strong{color:var(--green)}input[type=range]{width:100%;accent-color:var(--green);margin:16px 0 8px;cursor:pointer}.range-ends{display:flex;justify-content:space-between;color:var(--muted);font-size:10px}.selection-summary{border-top:1px solid var(--line);padding-top:17px;margin:22px 0 12px;color:var(--ink-soft);font-size:12px}.button{border:0;border-radius:10px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-size:12px;font-weight:600;transition:background .15s,transform .15s}.button:hover:not(:disabled){transform:translateY(-1px)}.primary{width:100%;background:var(--green);color:#fffaf0;justify-content:space-between;padding:0 16px}.primary span:last-child{font-size:19px}.button:disabled{opacity:.5;cursor:wait}.form-hint{font-size:10px;color:var(--muted);line-height:1.7;margin:12px 0 0}.error{font-size:12px;color:#c75535;margin:12px 0 0}.print-note{display:flex;gap:12px;padding:22px 6px;color:var(--ink-soft)}.note-icon{font-size:23px;line-height:1;color:var(--green);margin-top:3px}.print-note strong{font-size:11px;font-weight:600}.print-note p{color:var(--muted);font-size:11px;line-height:1.85;margin:6px 0 0}.preview-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 0 14px;min-height:47px}.download{background:var(--green);color:var(--bg);padding:0 18px;min-height:38px}.preview-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0 16px;color:var(--muted);font-size:11px}.view-switch{display:flex;gap:16px}.view-switch button{border:0;background:none;padding:0 0 5px;color:var(--muted);font-size:12px;border-bottom:2px solid transparent}.view-switch button[aria-pressed=true]{color:var(--green);border-color:var(--green);font-weight:600}.paper-stage{padding:24px;background:color-mix(in srgb,var(--green) 4%,var(--bg));border:1px solid var(--line);border-radius:14px}.paper{background:#fff;color:#222a29;width:100%;min-height:720px;padding:36px 36px 23px;box-shadow:0 6px 24px #00000008;position:relative;display:flex;flex-direction:column;border:1px solid #e5e7e3}.paper-heading{text-align:center;border-bottom:1.5px solid #263c33;padding:0 0 18px;margin-bottom:6px}.paper-kicker{color:#8b918e;font-size:9px;letter-spacing:.18em}.paper-heading h2{font-family:"Songti SC",STSong,serif;font-size:24px;font-weight:700;margin:6px 0 14px}.paper-heading p{font-size:10px;line-height:1.8;margin:0;color:#646d67}.paper-question{padding:20px 0 8px;min-height:111px}.question-top{display:flex;gap:10px;align-items:flex-start}.question-number{font:500 11px Georgia,serif;color:#8b928e;min-width:17px;padding-top:2px}.question-text{font-size:12px;line-height:1.8;margin:0;overflow-wrap:anywhere}.target-type{color:#78827c;font-size:9px;margin:5px 0 0 27px}.writing-space{height:41px;border-bottom:1px solid #e8ece8;margin:0 0 0 27px}.paper-footer{font-size:8px;color:#8b928e;display:flex;justify-content:space-between;border-top:1px solid #e8ece8;padding-top:10px;margin-top:auto}.preview-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 0}.preview-tip{font-size:10px;color:var(--muted)}.pagination{display:flex;align-items:center;gap:14px;font-size:11px;color:var(--ink-soft);white-space:nowrap}.pagination button{background:var(--surface);border:1px solid var(--line);border-radius:7px;width:30px;height:30px;color:var(--ink)}.pagination button:disabled{opacity:.3;cursor:default}.download-status{color:var(--green);font-size:12px;margin:0}.footer{display:flex;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding:25px 0 30px;margin-top:20px;font-size:10px;color:var(--muted)}.footer span:last-child{font:500 9px ui-monospace,monospace;letter-spacing:.1em}.answer-art{width:100%;display:block}.answer-heading{color:#66766c;font-size:10px;margin:0 0 6px}.answer-block{padding:17px 0;border-bottom:1px solid #e8ece8}.answer-block:last-child{border:0}.answer-label{font-size:10px;margin-bottom:6px;color:#66766c}.question-art{max-width:100%;display:block}.full-page-image{width:100%;display:block}.paper.image-paper{padding:0;min-height:0;border:0}
@media(min-width:1150px){.settings{position:sticky;top:24px}.paper-stage{padding:28px 40px}.paper{min-height:792px}.paper-question{min-height:122px}.writing-space{height:48px}}
@media(max-width:920px){.shell{width:calc(100% - 36px)}.workspace{grid-template-columns:260px minmax(0,1fr);gap:20px}.settings-card{padding:20px}.paper-stage{padding:14px}.paper{padding:28px 22px;min-height:690px}.brand-sub,.brand-divider{display:none}.edition{display:none}}
@media(max-width:720px){.nav{height:74px}.brand strong{font-size:12px}.brand-mark{width:30px;height:30px}.theme-switcher button{padding:0 8px;font-size:10px}.theme-switcher button span{display:none}.intro{padding:28px 0 25px}h1{font-size:32px}.eyebrow{font-size:8px}.intro-copy{font-size:12px}.workspace{grid-template-columns:1fr;gap:12px}.settings-card{padding:20px}fieldset{margin-top:20px}.scope-options{grid-template-columns:repeat(3,1fr);gap:7px}.scope-options label{padding:11px 8px}.scope-options strong{font-size:12px}.scope-options small{display:none}.selection-dot{width:12px;height:12px}.form-hint{text-align:center}.print-note{padding:17px 5px}.preview-toolbar{padding-top:8px}.paper-stage{padding:14px}.paper{padding:24px 20px;min-height:690px}.paper-heading h2{font-size:22px}.paper-heading p{font-size:8px}.paper-question{min-height:112px}.question-text{font-size:11px}.preview-tip{font-size:9px;max-width:60%}.footer{flex-direction:column;gap:8px}.view-switch{gap:14px}#paper-summary{font-size:10px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}