:root{--ink:#061641;--blue:#076bdf;--cyan:#09b7eb;--paper:#fff;--wash:#f2f7fd;--line:#cfdef0;--muted:#52627e;--radius:12px;--shadow:0 16px 40px rgba(6,22,65,.045);font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--wash);font-synthesis:none}*{box-sizing:border-box}body{margin:0;font-size:17px;line-height:1.7}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button,input,textarea{font:inherit}button,a,input,textarea,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.6}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:4px}.skip-link{position:absolute;left:18px;top:-100px;background:white;padding:12px 18px;z-index:10}.skip-link:focus{top:12px}.topbar{max-width:1440px;padding:23px 40px;margin:auto;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:24px}.home-link{font-weight:700;color:var(--ink);letter-spacing:.04em}.topbar nav{display:flex;gap:26px;font-size:15px}.topbar nav a{color:var(--muted)}main{max-width:1360px;margin:auto;padding:0 40px}.hero{display:flex;align-items:center;justify-content:space-between;padding:60px 0 42px;gap:36px}.eyebrow{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--blue);margin:0 0 14px}.hero h1{font-size:clamp(34px,4.6vw,60px);line-height:1.18;letter-spacing:-.04em;margin:0 0 22px;font-weight:750}.hero h1 span{color:var(--blue)}.hero-intro{max-width:740px;font-size:18px;color:var(--muted);margin:0;text-wrap:pretty}.hero-aside{flex:0 0 210px;text-align:right;border-right:6px solid var(--cyan);padding-right:24px}.large-number{display:block;font-size:90px;line-height:1;color:#d2e6fb;font-weight:750;letter-spacing:-.06em}.hero-aside p{font-size:14px;color:var(--muted);margin:15px 0 0}.mode-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;border:1px solid var(--line);border-radius:var(--radius);padding:5px;background:white}.mode-button{background:none;border:0;border-radius:8px;padding:18px 12px;color:var(--muted);font-weight:700;font-size:18px;display:flex;justify-content:center;align-items:center;gap:10px}.mode-number{font-size:12px;opacity:.65}.mode-button[aria-current="page"]{background:var(--blue);color:white}.mode-button:hover:not([aria-current="page"]){background:var(--wash);color:var(--blue)}.save-banner{display:flex;align-items:center;flex-wrap:wrap;gap:9px 12px;font-size:13px;margin:20px 0 26px;color:var(--muted)}.save-banner strong{color:var(--ink);font-weight:600}#save-status{margin-left:auto}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--blue)}.workspace-layout{display:grid;grid-template-columns:minmax(0,1fr) 286px;gap:26px;align-items:start}.main-column{display:grid;gap:24px}.panel{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);min-width:0}.panel h2,.side-column h2{font-size:27px;line-height:1.35;letter-spacing:-.03em;margin:0 0 18px}.side-column h2{font-size:20px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:5px}.section-heading h2{margin-bottom:8px}.section-heading .eyebrow{margin-bottom:9px}.muted{color:var(--muted);font-size:15px;margin:10px 0 22px}.small-tag{background:var(--wash);border:1px solid var(--line);border-radius:30px;padding:6px 12px;color:var(--blue);font-size:12px;white-space:nowrap}.brief{background:var(--ink);color:white;border-color:var(--ink)}.brief .eyebrow{color:#79d5f3}.brief h2{font-size:32px;color:white}.brief .brief-intro{font-size:18px;margin:0 0 20px;max-width:680px;color:#d7e6fa}.brief-steps{padding:20px 0 0;margin:24px 0 0;list-style:none;border-top:1px solid #354665;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.brief-steps b{font-size:12px;color:#79d5f3;display:block;margin-bottom:6px}.brief-steps span{display:block;font-size:15px}.brief-example{color:#d7e6fa;font-size:14px}.brief-example strong{color:white}.button{min-height:44px;border:1px solid transparent;border-radius:7px;padding:9px 15px;line-height:1.5;font-size:14px;font-weight:600;transition:background .15s,transform .15s}.button:active{transform:translateY(1px)}.primary{color:white;background:var(--blue)}.primary:hover{background:#0358bf}.secondary{color:var(--blue);background:white;border-color:var(--line)}.secondary:hover{background:#eaf4ff;border-color:#8bb8eb}.full{display:block;width:100%}.prompt-card{border-top:1px solid var(--line);padding:16px 0}.prompt-card:last-child{padding-bottom:0}.prompt-card summary{cursor:pointer;display:flex;align-items:center;gap:12px;list-style:none;font-weight:650;font-size:17px;min-height:38px}.prompt-card summary::before{content:'+';color:var(--blue);font-size:24px;font-weight:400}.prompt-card[open] summary::before{content:'−'}.prompt-body{padding-top:14px}.prompt-text{display:block;background:var(--wash);border:1px solid var(--line);padding:18px;border-radius:7px;font-size:14px;white-space:pre-wrap;word-break:break-word;line-height:1.8;color:var(--ink);font-family:inherit;max-height:320px;overflow:auto;margin:0 0 12px}.field{margin-top:26px}.field:first-child{margin-top:12px}.field label{display:block;font-size:18px;font-weight:650;line-height:1.5}.field-hint{color:var(--muted);font-size:14px;line-height:1.65;margin:7px 0 11px}.field input,.field textarea{border:1px solid #b7cae1;border-radius:7px;padding:13px 15px;width:100%;background:#fcfdff;color:var(--ink);font-size:16px;line-height:1.75}.field textarea{resize:vertical;min-height:118px}.field input{min-height:50px}.field input:hover,.field textarea:hover{border-color:#6c9dd6}.field textarea::placeholder,.field input::placeholder{color:#7e8ca2}.checklist{border-top:1px solid var(--line)}.check-item{display:flex;gap:12px;align-items:flex-start;padding:15px 0;border-bottom:1px solid var(--line);font-size:16px;cursor:pointer}.check-item input{width:21px;height:21px;accent-color:var(--blue);flex:0 0 21px;margin:3px 0 0}.check-item input:checked+span{color:var(--blue)}.transfers{display:grid;grid-template-columns:1fr 1fr;gap:0 28px;margin-top:24px}.transfer{padding:19px 0;border-top:1px solid var(--line)}.transfer h3{font-size:16px;color:var(--blue);margin:0 0 8px}.transfer p{font-size:15px;margin:0;color:var(--muted)}.faq-item{border-top:1px solid var(--line);padding:16px 0}.faq-item:last-child{padding-bottom:0}.faq-item summary{cursor:pointer;font-size:16px;font-weight:650;min-height:35px}.faq-item p{font-size:15px;color:var(--muted);margin:12px 0 0}.side-column{display:grid;gap:20px;position:sticky;top:20px}.timer-panel,.tool-panel,.offline-panel{border:1px solid var(--line);background:white;border-radius:var(--radius);padding:24px}.timer-panel .eyebrow,.offline-panel .eyebrow{font-size:11px}.timer-display{font-variant-numeric:tabular-nums;font-size:56px;font-weight:700;line-height:1.2;letter-spacing:-.05em;margin:17px 0 6px;color:var(--blue)}#timer-status{font-size:13px;color:var(--muted);margin:0 0 22px}.timer-panel label{display:block;color:var(--muted);font-size:12px;margin-bottom:7px}.timer-setting{display:flex;gap:8px;margin-bottom:12px}.timer-setting input{width:70px;min-width:0;border:1px solid var(--line);border-radius:6px;padding:6px 10px;color:var(--ink);font-size:16px}.timer-setting button{flex:1;padding:8px;font-size:12px}.caption{font-size:12px;color:var(--muted);line-height:1.75;margin:16px 0 0}.tool-panel .button{margin-top:10px;font-size:13px}.text-button{border:0;background:none;color:var(--blue);padding:12px 0 0;font-size:12px;text-decoration:underline}.danger{color:#53647e}.offline-panel{background:#e6f5fc;border-color:#c6e8f7}.offline-panel p:not(.eyebrow){font-size:14px;color:var(--muted);margin:0 0 18px}.arrow-link{font-size:14px;font-weight:650}.toast{position:fixed;z-index:30;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;border-radius:10px;padding:14px 23px;box-shadow:0 6px 30px #06164133;max-width:calc(100% - 32px);width:max-content;font-size:15px}.toast[hidden]{display:none}footer{border-top:1px solid var(--line);margin-top:45px;padding:27px 0 40px;color:var(--muted);font-size:12px;line-height:1.8}footer p{margin:0 0 8px}footer a{display:inline-block;margin-top:14px;font-size:14px}#print-view{display:none}.noscript{padding:24px;background:#fff;margin:20px;color:var(--ink)}
@media(max-width:1050px){main{padding:0 24px}.topbar{padding:20px 24px}.workspace-layout{grid-template-columns:minmax(0,1fr) 250px;gap:18px}.panel{padding:25px}.side-column{position:static}.timer-panel,.tool-panel,.offline-panel{padding:20px}.hero-aside{flex-basis:145px}.hero h1{font-size:46px}.section-heading{flex-wrap:wrap}.small-tag{white-space:normal}.mode-button{font-size:16px}}
@media(max-width:760px){body{font-size:16px}.topbar{padding:17px 18px;align-items:flex-start;gap:15px;flex-direction:column}.topbar nav{font-size:13px;gap:24px}main{padding:0 16px}.hero{padding:36px 0 30px}.hero h1{font-size:34px}.hero-aside{display:none}.hero-intro{font-size:16px}.mode-nav{grid-template-columns:1fr 1fr}.mode-button{padding:14px 5px;gap:8px}.save-banner{font-size:12px;margin-bottom:20px}#save-status{margin-left:19px;flex-basis:100%}.workspace-layout{display:flex;flex-direction:column}.main-column{width:100%;gap:18px}.side-column{display:contents}.main-column{order:2}.timer-panel{order:1;width:100%}.tool-panel{order:3;width:100%}.offline-panel{order:4;width:100%}.panel{padding:24px 19px}.panel h2{font-size:24px}.brief h2{font-size:27px}.brief-steps{grid-template-columns:1fr;gap:15px}.brief-steps li{display:flex;gap:16px}.brief-steps b{flex-basis:45px;margin:2px 0 0}.brief-steps span{flex:1}.transfers{grid-template-columns:1fr}.field label{font-size:17px}.field textarea,.field input{font-size:16px}.section-heading{gap:10px}.prompt-text{font-size:13px}.timer-panel{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.timer-panel .eyebrow,.timer-panel h2,.timer-panel .caption{grid-column:1/-1}.timer-display{grid-column:1;grid-row:3/5;margin-top:4px;font-size:50px}#timer-status{grid-column:1;grid-row:5;margin:0}.timer-panel label{grid-column:2;grid-row:3}.timer-setting{grid-column:2;grid-row:4;flex-wrap:wrap}.timer-setting input{width:60px}.timer-toggle{grid-column:2}#timer-toggle{grid-column:2;grid-row:5}.timer-panel .caption{margin-top:18px}.toast{bottom:16px;font-size:14px}footer{margin-top:30px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{body{background:white;color:black;font-size:11pt;line-height:1.6}.topbar,#app,.toast,.skip-link,noscript{display:none!important}#print-view{display:block}#print-view h1{font-size:22pt;margin-bottom:8px}#print-view h2{font-size:14pt;margin:22px 0 8px;break-after:avoid}#print-view p{white-space:pre-wrap;overflow-wrap:anywhere;margin:6px 0}#print-view .print-field{break-inside:avoid;border-top:1px solid #ccc;padding-top:8px}#print-view .print-note{font-size:9pt;color:#444}#print-view ul{padding-left:20px}@page{size:A4;margin:18mm}}