:root{--bg:#F7F9FC;--surface:#fff;--primary:#2563EB;--primary-hover:#1D4ED8;--accent:#14B8A6;--text:#111827;--muted:#667085;--border:#E5E7EB;--hover:#F1F5F9;--success:#16A34A;--warning:#F59E0B;--error:#DC2626;--shadow:0 12px 34px rgba(17,24,39,.07);--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,Arial,Helvetica,sans-serif;font-size:16px;line-height:1.6}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}svg{display:block;width:100%;height:100%}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;z-index:9999;left:16px;top:-80px;background:#111827;color:#fff;padding:10px 14px;border-radius:8px}.skip-link:focus{top:12px}.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);backdrop-filter:blur(10px)}.header-inner{max-width:var(--max);min-height:70px;margin:auto;padding:0 22px;display:flex;align-items:center;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--text);font-size:19px;white-space:nowrap}.brand:hover{text-decoration:none}.brand-mark{width:31px;height:31px;display:grid;place-items:center;border-radius:9px;background:var(--primary);color:#fff;padding:5px}.brand-mark svg{fill:currentColor}.main-nav{margin-left:auto;display:flex;align-items:center;gap:4px}.main-nav a{color:#344054;font-size:14px;font-weight:600;padding:10px 9px;border-radius:8px}.main-nav a:hover,.main-nav a[aria-current=page]{background:var(--hover);color:var(--primary);text-decoration:none}.menu-toggle{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:10px;padding:10px}.menu-toggle span:not(.sr-only){display:block;height:2px;background:#344054;margin:5px 0;border-radius:2px}.page-shell{max-width:var(--max);margin:auto;padding:0 22px}.breadcrumb{display:flex;gap:8px;align-items:center;flex-wrap:wrap;color:var(--muted);font-size:14px;padding:24px 0 4px}.breadcrumb a{color:#475467}.hero{text-align:center;max-width:900px;margin:22px auto 30px}.eyebrow,.section-kicker{display:inline-flex;align-items:center;min-height:28px;padding:3px 10px;background:#EFF6FF;color:var(--primary);border-radius:999px;font-size:13px;font-weight:800}.hero h1{font-size:clamp(2rem,5vw,3rem);line-height:1.12;letter-spacing:-.035em;margin:12px 0 14px}.hero>p{font-size:18px;color:var(--muted);max-width:800px;margin:0 auto}.privacy-pill{display:inline-flex;align-items:center;gap:9px;margin-top:18px;background:#ECFDF5;color:#166534;border:1px solid #BBF7D0;border-radius:999px;padding:8px 13px;font-size:14px}.privacy-pill svg{width:20px;height:20px;fill:#16A34A}
.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.tool-card{background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);overflow:hidden;min-height:460px}.drop-zone{margin:22px;border:2px dashed #BFDBFE;border-radius:16px;min-height:415px;padding:48px 24px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;cursor:pointer;background:linear-gradient(180deg,#fff,#FAFCFF);transition:border-color .15s,background .15s}.drop-zone:hover,.drop-zone.is-dragover{border-color:var(--primary);background:#F8FBFF}.drop-zone:focus-visible,.btn:focus-visible,.icon-btn:focus-visible,.menu-toggle:focus-visible,summary:focus-visible,input:focus-visible,.mode-card:focus-within,.page-card:focus-visible,.related-card:focus-visible{outline:3px solid rgba(37,99,235,.28);outline-offset:2px}.pdf-icon{width:72px;height:72px;margin-bottom:8px}.pdf-icon svg{fill:#DBEAFE;stroke:var(--primary);stroke-width:2}.pdf-icon .paper-fold,.pdf-icon .cut-line{fill:none}.pdf-icon .cut-line{stroke-dasharray:4 4}.pdf-icon .scissor{fill:#fff}.drop-zone h2{font-size:27px;margin:8px 0 2px}.drop-zone>p{color:var(--muted);margin:2px 0 18px}.drop-zone .privacy-note{font-size:13px;margin:16px 0 0}.visually-hidden-file{position:absolute;opacity:0;pointer-events:none;width:1px;height:1px}.upload-error{margin:0 22px 22px}.btn{border:0;border-radius:10px;min-height:44px;padding:10px 16px;font-weight:700;font-size:16px;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;transition:background .15s,transform .08s}.btn:hover{text-decoration:none}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{background:#94A3B8;cursor:not-allowed}.btn-secondary{background:#fff;color:#344054;border:1px solid #D0D5DD}.btn-secondary:hover,.btn-ghost:hover{background:var(--hover)}.btn-ghost{background:transparent;color:#475467}.btn-lg{min-height:52px;padding:13px 24px;font-size:17px}.btn-xl{min-height:56px;padding:14px 26px;font-size:18px}.btn-compact{min-height:40px;padding:8px 12px;font-size:14px}.notice{padding:12px 14px;border-radius:10px;margin:0 0 16px;font-size:14px}.notice-warning{background:#FFFAEB;border:1px solid #FEDF89;color:#7A2E0E}.notice-error{background:#FEF3F2;border:1px solid #FECDCA;color:#912018}.notice-info{background:#EFF8FF;border:1px solid #B2DDFF;color:#175CD3}
.workspace{padding:26px}.source-summary{display:grid;grid-template-columns:50px minmax(0,1fr) auto;gap:12px;align-items:center;border:1px solid var(--border);background:#FAFCFF;border-radius:13px;padding:14px;margin-bottom:22px}.source-icon{width:48px;height:48px;border-radius:10px;background:#FEF3F2;color:#B42318;display:grid;place-items:center;font-size:12px;font-weight:900}.source-details{min-width:0}.source-details strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.source-meta{display:flex;gap:7px;color:var(--muted);font-size:13px;margin-top:2px}.mode-fieldset{border:0;margin:0 0 22px;padding:0}.mode-fieldset legend{font-size:22px;font-weight:800;margin-bottom:12px}.mode-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.mode-card{position:relative;display:grid;grid-template-columns:34px minmax(0,1fr);gap:10px;align-items:start;border:1px solid var(--border);border-radius:12px;background:#fff;padding:14px;cursor:pointer}.mode-card:hover{background:#FAFCFF;border-color:#BFDBFE}.mode-card:has(input:checked){border-color:var(--primary);box-shadow:0 0 0 2px rgba(37,99,235,.10);background:#F8FBFF}.mode-card input{position:absolute;opacity:0}.mode-icon{width:34px;height:34px;border-radius:9px;background:#EFF6FF;color:var(--primary);display:grid;place-items:center;font-weight:900;font-size:18px}.mode-card strong{display:block;font-size:15px}.mode-card small{display:block;color:var(--muted);line-height:1.4;margin-top:2px}.editor-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:20px;align-items:start}.pages-panel{min-width:0;border:1px solid var(--border);border-radius:14px;background:#FAFBFC;overflow:hidden}.pages-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 16px;background:#fff;border-bottom:1px solid var(--border)}.pages-toolbar h2{font-size:19px;margin:0}.pages-toolbar p{font-size:13px;color:var(--muted);margin:1px 0 0}.jump-control{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:700;white-space:nowrap}.jump-control input{width:72px;min-height:40px;border:1px solid #D0D5DD;border-radius:9px;padding:7px}.selection-toolbar{display:flex;gap:7px;flex-wrap:wrap;align-items:center;padding:10px 12px;background:#F8FAFC;border-bottom:1px solid var(--border)}.selection-count{margin-left:auto;font-size:13px;font-weight:800}.page-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(128px,1fr));gap:12px;padding:14px;max-height:680px;overflow:auto;scrollbar-gutter:stable}.page-card{appearance:none;position:relative;display:flex;flex-direction:column;gap:7px;align-items:stretch;border:1px solid var(--border);border-radius:11px;background:#fff;padding:8px;cursor:pointer;min-width:0;color:var(--text);text-align:center}.page-card:hover{border-color:#93C5FD;box-shadow:0 5px 14px rgba(17,24,39,.05)}.page-card.is-selected{border-color:var(--primary);box-shadow:0 0 0 2px rgba(37,99,235,.18)}.page-card.is-planned:not(.is-selected){background:#F0F7FF;border-color:#BFDBFE}.page-card canvas{display:block;width:100%;height:160px;object-fit:contain;background:#fff;border:1px solid #EEF2F6;border-radius:6px}.thumb-placeholder{height:160px;display:grid;place-items:center;background:#F8FAFC;border:1px solid #EEF2F6;border-radius:6px;color:var(--muted);font-size:12px}.page-label{font-size:13px;font-weight:800}.check-dot{position:absolute;top:5px;right:5px;width:25px;height:25px;border-radius:50%;background:var(--primary);color:#fff;display:none;place-items:center;font-size:14px;font-weight:900;border:2px solid #fff}.page-card.is-selected .check-dot{display:grid}.settings-panel{position:sticky;top:92px;border:1px solid var(--border);border-radius:14px;background:#fff;padding:17px}.settings-section label,.settings-section>h3{display:block;margin:0 0 7px;font-weight:800;font-size:15px}.text-input,.number-input{width:100%;min-height:46px;border:1px solid #D0D5DD;border-radius:10px;padding:10px 11px;background:#fff;color:var(--text)}.field-help{font-size:13px;color:var(--muted);margin:5px 0 0}.field-error{font-size:13px;color:var(--error);margin:6px 0 0}.plan-box{margin-top:16px;border-top:1px solid var(--border);padding-top:15px}.plan-heading{display:flex;align-items:center;justify-content:space-between;gap:8px}.plan-heading h3{font-size:16px;margin:0}.plan-badge{background:#EFF6FF;color:var(--primary);font-size:12px;font-weight:900;padding:3px 8px;border-radius:999px}.plan-box>p{color:#475467;font-size:13px;margin:7px 0}.plan-list{margin:10px 0 0;padding:0;list-style:none;display:grid;gap:6px;max-height:220px;overflow:auto}.plan-list li{font-size:12px;color:#475467;background:#F8FAFC;border-radius:7px;padding:6px 8px}.split-btn{width:100%;margin-top:17px}.local-note{font-size:11px;line-height:1.45;color:var(--muted);margin:9px 2px 0;text-align:center}
.processing,.result-panel{min-height:460px;padding:52px 26px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center}.spinner{width:52px;height:52px;border:5px solid #DBEAFE;border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}.processing h2,.result-panel h2{font-size:28px;margin:18px 0 4px}.processing p,.result-panel>p{color:var(--muted);margin:0}.progress-track{width:min(560px,100%);height:12px;background:#E5E7EB;border-radius:99px;overflow:hidden;margin:24px 0 8px}.progress-track>div{height:100%;width:0;background:var(--primary);transition:width .25s}.processing-note{font-size:13px!important}.success-icon{width:68px;height:68px;border-radius:50%;background:#DCFCE7;padding:13px}.success-icon svg{fill:var(--success)}.result-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));width:min(760px,100%);margin:25px 0;gap:8px}.result-stats>div{background:#F8FAFC;border:1px solid var(--border);border-radius:10px;padding:12px}.result-stats dt{font-size:12px;color:var(--muted)}.result-stats dd{margin:3px 0 0;font-weight:800;overflow-wrap:anywhere}.generated-files{width:min(760px,100%);margin:18px 0 6px;display:grid;gap:7px;max-height:260px;overflow:auto}.generated-file{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:10px;align-items:center;text-align:left;border:1px solid var(--border);border-radius:9px;padding:9px 10px}.generated-file strong{min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}.generated-file span,.generated-file a{font-size:12px}.generated-file span{color:var(--muted)}.generated-file a{font-weight:800}.result-actions{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:10px}.sidebar-ad{position:sticky;top:94px}.ad-label{text-transform:uppercase;letter-spacing:.08em;font-size:10px;color:#98A2B3;text-align:center;margin-bottom:5px}.ad-slot{background:#F4F6F8;border:1px solid #EAECF0;display:grid;place-items:center;color:#98A2B3;font-size:12px}.ad-300x250{height:250px}.ad-band{margin:28px 0}.ad-desktop{width:min(728px,100%);height:90px;margin:auto}.ad-mobile{display:none;width:320px;max-width:100%;height:50px;margin:auto}.native-ad .ad-slot{min-height:90px}.content-section{margin:68px 0}.section-heading{text-align:center;max-width:800px;margin:0 auto 28px}.section-heading h2{font-size:clamp(1.75rem,3vw,2.15rem);line-height:1.25;margin:9px 0 8px}.section-heading p{color:var(--muted);margin:0}.steps-grid,.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step-card,.feature-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px}.step-card>span{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:#EFF6FF;color:var(--primary);font-weight:800}.step-card h3,.feature-card h3{font-size:18px;margin:13px 0 6px}.step-card p,.feature-card p{color:var(--muted);margin:0;font-size:15px}.feature-icon{width:42px;height:42px;border-radius:11px;background:#ECFDF5;color:#0F766E;display:grid;place-items:center;font-size:22px;font-weight:800}.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px}.article-grid article{background:#fff;border:1px solid var(--border);border-radius:14px;padding:30px}.article-grid article h2{font-size:25px;line-height:1.3;margin:30px 0 8px}.article-grid article h2:first-child{margin-top:0}.article-grid article p{color:#475467;margin:0 0 14px}.tip-card{background:#F0FDFA;border:1px solid #99F6E4;border-radius:14px;padding:20px}.tip-card h3{margin:0 0 9px}.tip-card ul{margin:0;padding-left:20px;color:#475467}.native-tall{height:250px;margin-bottom:20px}.article-aside>.ad-label{margin-top:24px}.trouble-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.trouble-grid article{background:#fff;border:1px solid var(--border);border-radius:12px;padding:20px}.trouble-grid h3{margin:0 0 6px;font-size:17px}.trouble-grid p{margin:0;color:var(--muted);font-size:14px}.faq-list{max-width:900px;margin:auto;display:grid;gap:9px}.faq-list details{background:#fff;border:1px solid var(--border);border-radius:11px;padding:0 18px}.faq-list summary{cursor:pointer;font-weight:700;list-style:none;padding:16px 34px 16px 0;position:relative}.faq-list summary:after{content:"+";position:absolute;right:2px;top:12px;font-size:24px;color:var(--primary)}.faq-list details[open] summary:after{content:"−"}.faq-list p{color:var(--muted);margin:0 0 17px}.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.related-card{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px;color:var(--text)}.related-card:hover{border-color:#BFDBFE;box-shadow:0 8px 18px rgba(17,24,39,.05);text-decoration:none}.related-icon{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:#EFF6FF;color:var(--primary);font-size:22px;font-weight:800;flex:0 0 auto}.related-card strong,.related-card small{display:block}.related-card small{color:var(--muted);line-height:1.4}.site-footer{background:#fff;border-top:1px solid var(--border);margin-top:40px}.footer-inner{max-width:var(--max);margin:auto;padding:36px 22px;display:flex;justify-content:space-between;gap:32px}.footer-inner>div{max-width:420px}.footer-inner p{color:var(--muted)}.footer-inner nav{display:flex;gap:8px 18px;flex-wrap:wrap}.footer-bottom{text-align:center;border-top:1px solid var(--border);padding:14px;color:var(--muted);font-size:13px}
.preview-dialog{border:0;border-radius:16px;padding:0;width:min(900px,calc(100% - 28px));max-height:92vh;box-shadow:0 24px 60px rgba(15,23,42,.28)}.preview-dialog::backdrop{background:rgba(15,23,42,.65)}.preview-dialog-inner{padding:15px}.preview-topbar{display:flex;justify-content:space-between;align-items:center}.preview-topbar h2{font-size:20px;margin:0}.icon-btn{width:44px;height:44px;border-radius:9px;border:1px solid var(--border);background:#fff;font-size:22px;cursor:pointer}.preview-canvas-wrap{position:relative;display:grid;place-items:center;background:#F1F5F9;border-radius:10px;margin:12px 0;min-height:260px;max-height:68vh;overflow:auto;padding:12px}.preview-canvas-wrap canvas{max-width:100%;height:auto;background:#fff}.preview-loading{position:absolute;inset:0;display:grid;place-items:center;background:rgba(248,250,252,.92)}.preview-controls{display:flex;align-items:center;justify-content:center;gap:14px}.preview-controls span{font-weight:800;min-width:95px;text-align:center}@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:1080px){.main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:12px 22px;box-shadow:0 15px 25px rgba(17,24,39,.08);flex-direction:column;align-items:stretch}.main-nav.is-open{display:flex}.menu-toggle{display:block}.tool-layout{grid-template-columns:1fr}.sidebar-ad{display:none}.editor-layout{grid-template-columns:1fr}.settings-panel{position:static}.steps-grid,.feature-grid{grid-template-columns:repeat(2,1fr)}.article-grid{grid-template-columns:1fr}.article-aside{display:grid;grid-template-columns:1fr 1fr;gap:16px}.article-aside>.ad-label{display:none}.trouble-grid{grid-template-columns:repeat(2,1fr)}.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.header-inner,.page-shell{padding-left:16px;padding-right:16px}.header-inner{min-height:64px}.brand{font-size:17px}.main-nav{top:64px}.hero>p{font-size:16px}.privacy-pill{border-radius:12px;text-align:left}.drop-zone{margin:12px;min-height:390px;padding:36px 16px}.workspace{padding:14px}.source-summary{grid-template-columns:44px minmax(0,1fr)}.source-summary>.btn{grid-column:1/-1;width:100%}.mode-grid{grid-template-columns:1fr}.pages-toolbar{align-items:flex-start;flex-direction:column}.jump-control{width:100%;white-space:normal;flex-wrap:wrap}.jump-control input{flex:1}.selection-count{width:100%;margin:2px 0 0}.page-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;padding:10px;max-height:600px}.page-card canvas,.thumb-placeholder{height:155px}.settings-panel{padding:14px}.split-btn{position:sticky;bottom:max(10px,env(safe-area-inset-bottom));z-index:5}.result-stats{grid-template-columns:repeat(2,1fr)}.generated-file{grid-template-columns:minmax(0,1fr) auto}.generated-file span{grid-column:1}.ad-desktop{display:none}.ad-mobile{display:grid}.content-section{margin:50px 0}.steps-grid,.feature-grid,.trouble-grid,.related-grid{grid-template-columns:1fr}.article-grid article{padding:22px}.article-aside{grid-template-columns:1fr}.footer-inner{flex-direction:column;padding:30px 16px}.processing,.result-panel{padding:42px 16px}.result-actions{width:100%}.result-actions .btn,#primary-download{width:100%}}
@media(max-width:380px){.brand{font-size:16px}.hero h1{font-size:29px}.page-grid{gap:7px;padding:8px}.page-card canvas,.thumb-placeholder{height:138px}.selection-toolbar .btn{flex:1 1 45%}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}