:root{--paper:#f7f6f0;--ink:#233e35;--muted:#61685e;--line:#dbddd2;--orange:#b94727;--soft:#e8ecdf;--white:#fffefa;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}body{margin:0;font-size:16px;line-height:1.65}a{color:inherit;text-underline-offset:5px}a:hover{color:var(--orange)}button,input,select{font:inherit}button,a,input,summary,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:5px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.12;font-weight:550;letter-spacing:-.045em}h1{font-size:clamp(38px,4.6vw,68px);margin:24px 0}h2{font-size:clamp(30px,3.2vw,44px);margin-bottom:20px}h3{font-size:27px;line-height:1.24}em{font-family:Georgia,serif;font-weight:400}p{color:var(--muted)}[hidden]{display:none!important}.skip{position:fixed;top:-90px;left:20px;background:var(--ink);color:white;padding:12px;z-index:10}.skip:focus{top:10px}.site-header{max-width:1376px;margin:auto;padding:27px 48px;display:flex;align-items:center;gap:36px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font-size:19px;font-weight:650;line-height:1.15;white-space:nowrap}.brand small{display:block;font:10px ui-monospace,monospace;letter-spacing:2px;margin-top:6px;font-weight:400}.site-header nav{display:flex;gap:28px;margin-left:auto;font-size:14px}.site-header nav a{text-decoration:none;white-space:nowrap}.site-header nav a[aria-current]{text-decoration:underline;text-decoration-color:var(--orange);text-decoration-thickness:2px}main{max-width:1280px;margin:0 auto;padding:0 40px}.hero{display:grid;grid-template-columns:1.04fr 1fr;align-items:center;gap:36px;padding:64px 0 50px}.eyebrow{font:11px/1.6 ui-monospace,SFMono-Regular,monospace;letter-spacing:1.8px;font-weight:500;color:var(--muted);text-transform:uppercase}.hero .eyebrow{display:flex;align-items:center;gap:9px}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--orange)}.lede{font-size:18px;line-height:1.85;max-width:680px}.hero-copy .lede{max-width:470px}.actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin:30px 0 16px}.button{display:inline-flex;align-items:center;justify-content:center;gap:24px;border:0;border-radius:6px;padding:14px 23px;font-size:14px;font-weight:600;text-decoration:none;line-height:1.5}.primary{background:var(--orange);color:#fffefa}.primary:hover{background:#98391f;color:white}.dark{background:var(--ink);color:white}.dark:hover{background:#122c23;color:white}.light{background:#eceddf;color:var(--ink)}.text-link{font-size:14px;font-weight:600}.fine{font-size:12px;line-height:1.7}.hero-art img{display:block;max-width:100%;height:auto}.art-caption{display:flex;justify-content:space-between;gap:10px;font:9px/1.7 ui-monospace,monospace;letter-spacing:1px;color:var(--muted);margin-top:14px}.trust-strip{display:flex;justify-content:space-between;gap:20px;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:11px;color:var(--muted)}.section{padding:70px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}.section-head h2{margin:0}.section-head>p{max-width:315px;font-size:15px;margin-bottom:0}.path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.path-card{padding:28px;background:var(--white);border:1px solid var(--line);border-radius:10px}.card-number{display:flex;justify-content:space-between;font:13px ui-monospace,monospace;color:var(--muted);margin-bottom:48px}.card-number>span{font-size:22px;color:var(--orange)}.path-card h3 a{text-decoration:none}.path-card p{font-size:14px;line-height:1.85;margin-bottom:22px}.card-link{font-size:13px;font-weight:600}.feature-band{display:grid;grid-template-columns:1fr 1fr;gap:60px;background:var(--ink);color:var(--paper);padding:54px 60px;border-radius:12px;align-items:center}.feature-band h2{font-weight:450}.feature-band p{color:#c7d1c4;max-width:370px}.feature-band .eyebrow{color:#d8b288}.key-preview{padding:10px 0}.key-preview>div{display:flex;align-items:center;gap:7px;border-bottom:1px solid #52665b;padding:19px 0}.key-preview span{margin-right:auto;font-size:14px}.key-preview kbd{background:#3e5648;border-color:#61765d;color:#f8f8ed;box-shadow:0 3px #172d25}.key-preview small{display:block;margin-top:22px;font-size:10px;color:#c7d1c4}kbd{font:13px ui-monospace,monospace;background:#f0f0e7;border:1px solid var(--line);border-radius:4px;padding:5px 9px;white-space:nowrap}.comparison-preview{display:grid;grid-template-columns:1fr 1fr;gap:60px}.comparison-preview>div:last-child{padding-top:24px}.faq{max-width:800px;margin:0 auto;padding:20px 0 75px}.faq h2{margin-bottom:30px}.faq details{border-bottom:1px solid var(--line);padding:19px 0}.faq summary{cursor:pointer;font-size:16px;font-weight:550}.faq details p{font-size:14px;margin:17px 0 0}.site-footer{max-width:1280px;margin:0 auto;padding:38px 40px 30px;border-top:1px solid var(--line);display:flex;align-items:start;justify-content:space-between;gap:30px;font-size:12px}.site-footer p{margin:15px 0}.site-footer nav{display:flex;gap:20px;flex-wrap:wrap}.site-footer .brand{font-size:16px}.footer-note{max-width:410px}.breadcrumb{display:flex;gap:15px;font-size:12px;color:var(--muted);padding-top:25px}.page-heading{padding:42px 0 36px}.page-heading h1{font-size:clamp(36px,4.3vw,62px)}.page-heading .eyebrow{margin-bottom:14px}.reading{max-width:810px;margin:40px auto 70px}.reading h2{font-size:28px;margin:38px 0 16px;line-height:1.3}.reading p{line-height:1.95}.platform-picker{display:flex;gap:10px;margin-bottom:24px}.platform-picker button{padding:11px 26px;border:1px solid var(--line);border-radius:6px;background:transparent;color:var(--ink);font-size:14px}.platform-picker button[aria-pressed=true]{background:var(--ink);color:white}.platform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.platform-card{border:1px solid var(--line);border-radius:10px;padding:25px;scroll-margin-top:30px}.platform-card.selected{border:2px solid var(--ink);background:var(--white);padding:24px}.platform-card h2{font-size:25px;line-height:1.3}.platform-card p,.platform-card a{font-size:14px}.notice{background:#edeadd;border-left:3px solid var(--orange);padding:23px 28px;margin:35px 0}.notice p{font-size:14px;margin:8px 0 0}.tutorial-layout{display:grid;grid-template-columns:1.6fr 1fr;gap:55px;margin-bottom:70px}.check-step{display:flex;align-items:start;gap:16px;padding:27px 0;border-bottom:1px solid var(--line);cursor:pointer}.check-step:first-child{padding-top:0}.check-step input{flex-shrink:0;margin-top:6px;width:19px;height:19px;accent-color:var(--ink)}.step-num{font:13px/1.7 ui-monospace,monospace;color:var(--orange)}.check-step strong{display:block;font-size:20px;margin-bottom:10px;font-weight:550}.check-step>span:last-child>span{display:block;font-size:14px;color:var(--muted)}.check-step:has(input:checked) strong{text-decoration:line-through;color:var(--muted)}.aside-note{background:var(--soft);padding:35px;border-radius:8px;align-self:start}.aside-note h2{font-size:35px}.aside-note p{font-size:14px}#check-progress{font-size:13px}.tool-shell{border:1px solid var(--line);padding:28px;border-radius:12px;background:var(--white);margin-bottom:75px}.tool-toolbar{display:flex;gap:20px;align-items:end}.tool-toolbar label{font-size:12px;display:flex;flex:1;flex-direction:column;gap:8px}.tool-toolbar input,.tool-toolbar select{width:100%;border:1px solid #aeb7a7;border-radius:5px;padding:11px 14px;color:var(--ink);background:var(--white);font-size:14px}.table-scroll{overflow-x:auto;margin-bottom:28px}table{border-collapse:collapse;width:100%;font-size:14px;text-align:left}th,td{padding:20px 17px;border-bottom:1px solid var(--line);vertical-align:top}thead th{font:11px ui-monospace,monospace;letter-spacing:1px;text-transform:uppercase;background:var(--soft)}tbody th{font-weight:550}td{color:var(--muted)}.table-scroll:not(:has(.shortcut-table)) table{min-width:680px}#shortcut-count{font-size:12px;margin:22px 0 12px}.inspector-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px}.upload-zone{border:2px dashed #a8b5a1;border-radius:12px;background:var(--soft);padding:48px 25px;text-align:center}.upload-zone.dragging{border-color:var(--orange);background:#f1e3d6}.file-symbol{display:inline-flex;justify-content:center;align-items:center;width:63px;height:76px;font:17px ui-monospace,monospace;border:1px solid #a1b498;border-radius:6px;background:var(--white);margin-bottom:24px}.upload-zone h2{font-size:27px}.upload-zone p{font-size:14px}.file-button{position:relative;overflow:hidden;cursor:pointer}.file-button:focus-within{outline:3px solid var(--ink);outline-offset:4px}.file-button input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}.text-button{background:none;border:0;color:var(--ink);text-decoration:underline;text-underline-offset:5px;padding:12px;font-size:13px}.upload-zone .text-button{display:block;margin:9px auto}.upload-zone .fine{font-size:11px;margin-bottom:0}.inspector-result{padding:32px;background:var(--white);border:1px solid var(--line);border-radius:12px;min-width:0}.inspector-result h2{font-size:28px;overflow-wrap:anywhere}.inspector-result p{font-size:14px}dl{display:grid;grid-template-columns:1fr 1fr;font-size:14px}dt,dd{margin:0;padding:10px 0;border-bottom:1px solid var(--line)}dt{color:var(--muted)}dd{text-align:right;overflow-wrap:anywhere}.source-line{font-size:13px;margin-bottom:70px}.source-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.source-grid h2{font-size:24px}.source-grid p{margin:0}
@media(min-width:1400px){.hero{min-height:605px}}@media(max-width:1000px){.site-header{padding:22px 30px;gap:20px}.site-header nav{gap:18px}.hero{gap:20px}.hero h1{font-size:46px}.feature-band{padding:40px;gap:35px}.tool-toolbar{flex-wrap:wrap}.tool-toolbar .button{min-height:45px}.site-footer{gap:25px}}@media(max-width:760px){.site-header{padding:19px 22px;flex-wrap:wrap;gap:19px}.brand{font-size:17px}.site-header nav{order:3;width:100%;justify-content:space-between;gap:12px;font-size:13px}.site-header .brand img{width:32px;height:32px}main{padding:0 22px}.hero{grid-template-columns:1fr;padding:39px 0 28px;gap:25px}.hero h1{font-size:46px;line-height:1.1;margin-top:20px}.hero-copy .lede{font-size:16px}.hero .eyebrow{font-size:9px}.hero-art{max-width:560px}.hero-art img{width:100%}.art-caption{font-size:8px}.actions{gap:18px;margin-top:24px}.trust-strip{flex-wrap:wrap;gap:8px 20px;font-size:10px;padding:16px 0}.section{padding:43px 0}.section-head{display:block;margin-bottom:25px}.section-head>p{margin-top:20px}.path-grid,.platform-grid,.source-grid{grid-template-columns:1fr}.path-card{padding:26px}.card-number{margin-bottom:25px}.path-card p{max-width:450px}.feature-band{grid-template-columns:1fr;padding:34px 27px;gap:22px}.comparison-preview{grid-template-columns:1fr;gap:10px}.comparison-preview>div:last-child{padding-top:0}.faq{padding:18px 0 45px}.faq h2{font-size:30px}.site-footer{padding:30px 22px;flex-direction:column;gap:15px}.page-heading{padding:32px 0 22px}.page-heading h1{font-size:39px}.lede{font-size:16px}.platform-picker{gap:7px}.platform-picker button{flex:1;padding:10px}.platform-card.selected{padding:24px}.tutorial-layout,.inspector-layout{grid-template-columns:1fr;gap:25px}.check-step{gap:10px}.check-step strong{font-size:18px}.step-num{font-size:11px}.tool-shell{padding:18px;margin-bottom:45px}.tool-toolbar{display:grid;grid-template-columns:1fr}.tool-toolbar label{min-width:0}.tool-toolbar .button{width:100%}th,td{padding:16px 10px;font-size:13px}.shortcut-table td:nth-child(2),.shortcut-table thead th:nth-child(2){display:none}.shortcut-table kbd{font-size:11px;padding:5px}.notice{padding:20px;margin:26px 0}.inspector-result{padding:25px}.upload-zone{padding:30px 18px}.reading{margin-bottom:45px}.source-line{margin-bottom:40px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media print{.site-header,.site-footer,.breadcrumb,.actions,.aside-note,.skip{display:none}body,main{background:#fff;color:#000}main{padding:0;max-width:none}.page-heading{padding:0}.page-heading h1{font-size:28px}.tutorial-layout{display:block}.check-step{break-inside:avoid;padding:12px 0}.check-step>span:last-child>span{color:#222}.check-step strong{font-size:17px}.check-step input{appearance:none;border:1px solid #555}.check-step input:checked:after{content:'✓'}a{text-decoration:none}}

/* 首页任务摘要沿用现有视觉系统。 */
.home-guide{max-width:900px;margin:0 auto}.home-section{padding:48px 0;border-top:1px solid var(--line);scroll-margin-top:24px}.home-section h2{font-size:clamp(28px,3vw,38px)}.home-section li{margin-bottom:16px;color:var(--muted)}.home-section strong{color:var(--ink)}.home-section ol{padding-left:24px}.home-section.faq{max-width:none;margin:0}.home-table.table-scroll table{min-width:0;table-layout:fixed}.home-table th:first-child,.home-table td:first-child{width:25%}.home-table td{overflow-wrap:anywhere}.home-table code{white-space:normal}.hero-copy{min-width:0}.hero h1{font-size:clamp(36px,4vw,58px)}
@media(max-width:760px){.home-section{padding:32px 0}.home-table th,.home-table td{padding:12px 7px}.home-table th:first-child,.home-table td:first-child{width:27%}.hero h1{font-size:40px}}

.platform-card code{overflow-wrap:anywhere;white-space:normal}

/* 面包屑在手机上自然换行，避免较长的工具名称挤出视口。 */
.breadcrumb{flex-wrap:wrap;align-items:center;gap:6px 12px}.reading li{margin-bottom:12px;color:var(--muted)}

/* 实测截图保留原图比例，可打开原尺寸；长导航允许窄屏换行。 */
.test-figure{margin:28px 0}.test-figure img{display:block;width:100%;height:auto;border:1px solid var(--line);border-radius:8px}.test-figure figcaption{font-size:13px;color:var(--muted);margin-top:10px}.test-evidence{max-width:960px}.site-header nav{flex-wrap:wrap}.check-step>span:last-child{min-width:0;overflow-wrap:anywhere}@media print{.test-evidence{display:none}}