:root{--ink:#263238;--muted:#73808a;--paper:#f5f7f8;--surface:#fff;--line:#e6eaed;--accent:#16a085;--accent-dark:#10816b;--accent-soft:#e7f7f3;--blue:#4b8df8;--warning:#b36b12;--sidebar:228px;--shadow:0 7px 24px #2632380f;color:var(--ink);background:var(--paper);font-synthesis:none;font-family:Inter,PingFang SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;min-width:320px}body{background:var(--paper);min-height:100vh;margin:0;font-size:15px;line-height:1.65}a{color:inherit}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}.site-sidebar{z-index:20;width:var(--sidebar);color:#4a5860;border-right:1px solid var(--line);background:#fff;flex-direction:column;padding:0 14px 22px;display:flex;position:fixed;inset:0 auto 0 0}.brand{color:#25343a;border-bottom:1px solid #eef1f2;align-items:center;gap:11px;height:70px;padding:0 8px;text-decoration:none;display:flex}.brand-mark{color:#fff;background:linear-gradient(145deg,#22b795,#11836d);border-radius:10px;flex:none;place-items:center;width:36px;height:36px;font-size:17px;font-weight:900;display:grid;box-shadow:0 5px 12px #16a08538}.brand-copy{line-height:1.25;display:grid}.brand-copy strong{letter-spacing:.02em;font-size:17px}.brand-copy small{color:#9aa4aa;margin-top:3px;font-size:11px;font-weight:500}.sidebar-title{color:#a4adb2;letter-spacing:.12em;margin:25px 12px 8px;font-size:11px;font-weight:750}.side-nav{gap:5px;display:grid}.side-nav a{color:#59666d;border-radius:8px;align-items:center;gap:11px;padding:10px 11px;text-decoration:none;transition:all .18s;display:flex}.side-nav a:hover{color:var(--accent-dark);background:#f3f8f7}.side-nav a.active{color:var(--accent-dark);background:var(--accent-soft)}.nav-icon{color:#779087;background:#f1f5f4;border-radius:8px;place-items:center;width:32px;height:32px;font-size:13px;font-weight:800;display:grid}.side-nav a.active .nav-icon{color:#fff;background:var(--accent)}.side-nav a>span:last-child{min-width:0;line-height:1.3;display:grid}.side-nav strong{font-size:14px}.side-nav small{color:#9aa4aa;text-overflow:ellipsis;white-space:nowrap;margin-top:2px;font-size:10px;overflow:hidden}.sidebar-trust{color:#527068;background:#f4faf8;border:1px solid #e0f1ec;border-radius:9px;align-items:center;gap:10px;margin:auto 5px 0;padding:13px;display:flex}.shield-icon{color:#fff;background:var(--accent);border-radius:50%;place-items:center;width:26px;height:26px;font-size:12px;font-weight:900;display:grid}.sidebar-trust div{min-width:0;line-height:1.35;display:grid}.sidebar-trust strong{font-size:12px}.sidebar-trust small{color:#8a9994;font-size:9px}.site-frame{min-height:100vh;margin-left:var(--sidebar);flex-direction:column;display:flex}.site-header{border-bottom:1px solid var(--line);background:#fff;justify-content:space-between;align-items:center;height:61px;padding:0 30px;display:flex}.site-header>nav{align-items:stretch;gap:30px;height:100%;display:flex}.site-header>nav a{color:#617078;align-items:center;font-size:14px;font-weight:650;text-decoration:none;display:flex;position:relative}.site-header>nav a:hover,.site-header>nav a.active{color:var(--accent)}.site-header>nav a.active:after{content:"";background:var(--accent);height:2px;position:absolute;inset:auto 0 -1px}.header-badge{color:#7b888f;align-items:center;gap:7px;font-size:12px;display:flex}.header-badge span{background:#36bc78;border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 4px #e8f8ef}.mobile-brand,.mobile-menu{display:none}.search-strip{border-bottom:1px solid var(--line);background:#fff;padding:18px 30px 15px}.tool-search{background:#f7f9fa;border:1px solid #e2e7e9;border-radius:6px;align-items:center;max-width:780px;height:44px;margin:0 auto;display:flex;overflow:hidden}.tool-search>span{color:#9aa5aa;margin-left:15px;font-size:24px;line-height:1;transform:rotate(-15deg)}.tool-search input{min-width:0;height:100%;color:var(--ink);background:0 0;border:0;outline:0;flex:1;padding:0 12px}.tool-search button{color:#fff;background:var(--accent);cursor:pointer;border:0;align-self:stretch;min-width:78px;font-weight:700}.tool-search button:hover{background:var(--accent-dark)}.quick-links{color:#98a2a7;gap:13px;max-width:780px;margin:7px auto 0;font-size:11px;display:flex}.quick-links a{color:#78868d;text-decoration:none}.quick-links a:hover{color:var(--accent)}main{flex:1;width:min(1180px,100% - 44px);margin-inline:auto}.tool-tabs{border:1px solid var(--line);background:#fff;border-radius:6px;gap:3px;margin-top:18px;padding:0 16px;display:flex;overflow-x:auto;box-shadow:0 2px 8px #26323808}.tool-tabs a{color:#69777e;border-bottom:2px solid #0000;flex:none;padding:12px 17px 10px;font-size:13px;font-weight:650;text-decoration:none}.tool-tabs a:hover,.tool-tabs a.active{color:var(--accent);border-color:var(--accent)}.home-intro{background:linear-gradient(120deg,#f1fbf8 0%,#fff 68%);border:1px solid #e4efec;border-top:0;grid-template-columns:minmax(0,1.3fr) minmax(280px,.7fr);align-items:center;gap:50px;min-height:390px;padding:65px 64px;display:grid}.eyebrow{color:var(--accent);letter-spacing:.1em;font-size:12px;font-weight:800}.home-intro h1{letter-spacing:-.045em;margin:12px 0 19px;font-size:clamp(39px,5vw,62px);line-height:1.15}.home-intro h1 span{color:var(--accent)}.home-intro p{color:#68777e;max-width:630px;margin-bottom:26px;font-size:16px}.hero-actions{gap:11px;display:flex}.hero-visual{place-items:center;min-height:250px;display:grid;position:relative}.photo-sheet{background:#fff;border:1px solid #d9e4e0;border-radius:8px;justify-items:center;width:174px;height:220px;padding-top:25px;display:grid;position:relative;transform:rotate(3deg);box-shadow:0 18px 45px #1d564824}.photo-sheet span{background:radial-gradient(circle at 50% 34%,#f2c7a5 0 18%,#0000 19%),radial-gradient(at 50% 85%,#466276 0 32%,#0000 33%),#d8ecf8;border-radius:4px;width:92px;height:92px}.photo-sheet i{background:#edf1f2;border-radius:4px;width:112px;height:6px;box-shadow:0 16px #edf1f2,0 32px #edf1f2}.photo-sheet b{color:#809097;font-size:11px}.float-card{color:#526169;box-shadow:var(--shadow);background:#fff;border:1px solid #e1e8e6;border-radius:7px;padding:10px 13px;font-size:12px;font-weight:700;position:absolute}.float-card-one{color:var(--accent-dark);top:25px;right:3px}.float-card-two{color:var(--blue);bottom:28px;left:0}.home-section,.feature-section,.home-faq{border:1px solid var(--line);background:#fff;border-radius:7px;margin-top:20px;padding:34px}.section-heading{justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px;display:flex}.section-heading h2,.home-faq h2{margin:5px 0 0;font-size:25px;line-height:1.3}.section-heading>p{color:#96a0a5;margin:0;font-size:12px}.tool-grid{grid-template-columns:repeat(3,1fr);gap:13px;display:grid}.tool-card{min-height:210px;color:var(--ink);background:#fff;border:1px solid #e5eaec;border-radius:8px;flex-direction:column;padding:21px;text-decoration:none;transition:all .2s;display:flex;position:relative}.tool-card:hover{border-color:#bcded5;transform:translateY(-3px);box-shadow:0 10px 25px #16a08517}.tool-card-icon{width:44px;height:44px;color:var(--accent);background:var(--accent-soft);border-radius:9px;place-items:center;font-weight:850;display:grid}.tool-card h3{margin:16px 0 6px;font-size:17px}.tool-card p{color:#7a878d;margin:0;font-size:13px}.tool-action{color:var(--accent);margin-top:auto;font-size:12px;font-weight:750}.tool-action b{margin-left:4px;font-size:16px}.tool-card em{color:#fff;background:#ff895f;border-radius:10px;padding:2px 7px;font-size:9px;font-style:normal;position:absolute;top:15px;right:15px}.feature-grid{grid-template-columns:repeat(3,1fr);gap:28px;display:grid}.feature-grid article{border-left:2px solid #dcece7;padding-left:18px}.feature-grid span{color:var(--accent);font-size:11px;font-weight:900}.feature-grid h3{margin:7px 0 5px;font-size:16px}.feature-grid p{color:#7a878d;margin:0;font-size:13px}.home-faq{grid-template-columns:220px 1fr;gap:35px;margin-bottom:45px;display:grid}.faq-list details{border-bottom:1px solid var(--line)}.faq-list details:first-child{border-top:1px solid var(--line)}.faq-list summary{cursor:pointer;padding:14px 4px;font-weight:700}.faq-list p{color:var(--muted);margin:-2px 4px 14px;font-size:13px}.section-link{color:var(--accent);font-size:12px;font-weight:750;text-decoration:none}.home-guide-grid{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.home-guide-grid a{border:1px solid var(--line);background:#f8faf9;border-radius:6px;gap:4px;padding:15px 17px;text-decoration:none;transition:all .18s;display:grid}.home-guide-grid a:hover{color:var(--accent-dark);background:#f2faf7;border-color:#bcded5}.home-guide-grid strong{font-size:14px}.home-guide-grid span{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.guides-index,.guide-page{padding:28px 0 55px}.guides-index>header{background:linear-gradient(120deg,#f0faf7,#fff);border:1px solid #e1ede9;border-radius:7px;margin-bottom:18px;padding:35px}.guides-index h1,.guide-hero h1{letter-spacing:-.035em;margin:7px 0 10px;font-size:clamp(31px,4vw,43px);line-height:1.2}.guides-index>header p,.guide-hero p{max-width:760px;color:var(--muted);margin:0}.guide-card-grid{grid-template-columns:repeat(2,1fr);gap:13px;display:grid}.guide-card-grid>a{min-height:185px;color:var(--ink);border:1px solid var(--line);background:#fff;border-radius:7px;flex-direction:column;padding:23px;text-decoration:none;transition:all .18s;display:flex}.guide-card-grid>a:hover{box-shadow:var(--shadow);border-color:#bcded5;transform:translateY(-2px)}.guide-card-grid>a>span{color:var(--accent);letter-spacing:.1em;font-size:10px;font-weight:800}.guide-card-grid h2{margin:7px 0 6px;font-size:19px}.guide-card-grid p{color:var(--muted);font-size:13px}.guide-card-grid strong{color:var(--accent);margin-top:auto;font-size:12px}.breadcrumb{color:#929da2;align-items:center;gap:8px;margin-bottom:12px;font-size:11px;display:flex}.breadcrumb a{text-decoration:none}.breadcrumb a:hover{color:var(--accent)}.guide-hero{background:linear-gradient(120deg,#f0faf7,#fff 70%);border:1px solid #e1ede9;border-radius:7px;justify-content:space-between;align-items:end;gap:30px;padding:35px;display:flex}.guide-hero .button{flex:none}.guide-requirements{border:1px solid var(--line);background:#fff;border-radius:7px;grid-template-columns:repeat(5,1fr);margin-top:14px;display:grid;overflow:hidden}.guide-requirements div{border-right:1px solid var(--line);align-content:start;gap:5px;min-width:0;padding:17px;display:grid}.guide-requirements div:last-child{border:0}.guide-requirements span{color:#939ea3;font-size:10px}.guide-requirements strong{font-size:12px;line-height:1.5}.guide-warning{color:#8b631a;background:#fffaf0;border:1px solid #f0e1c1;border-radius:7px;grid-template-columns:125px 1fr;gap:18px;margin-top:14px;padding:16px 20px;display:grid}.guide-warning p{margin:0;font-size:13px}.guide-columns{grid-template-columns:1fr 1fr;gap:14px;margin-top:14px;display:grid}.guide-columns section{border:1px solid var(--line);background:#fff;border-radius:7px;padding:28px}.guide-columns h2,.guide-cta h2,.related-guides h2{margin:5px 0 16px;font-size:22px}.guide-columns ol,.guide-columns ul{color:#66747b;gap:11px;margin:0;padding-left:20px;font-size:14px;display:grid}.guide-columns li::marker{color:var(--accent);font-weight:800}.guide-cta{color:#fff;background:#263d38;border-radius:7px;justify-content:space-between;align-items:center;gap:28px;margin-top:14px;padding:27px 30px;display:flex}.guide-cta .eyebrow{color:#64d6bd}.guide-cta h2{margin-bottom:5px}.guide-cta p{color:#bdd0ca;margin:0;font-size:13px}.guide-source{color:#929da2;margin:12px 4px 0;font-size:11px}.guide-source a{color:#6c7b81}.related-guides{margin-top:35px}.related-guides>div{grid-template-columns:repeat(3,1fr);gap:11px;display:grid}.related-guides a{border:1px solid var(--line);background:#fff;border-radius:6px;gap:5px;padding:17px;text-decoration:none;display:grid}.related-guides a:hover{border-color:#bcded5}.related-guides a span{color:var(--muted);font-size:11px}.tool-shell{padding:25px 0 55px}.tool-heading{border:1px solid var(--line);background:#fff;border-radius:6px;margin-bottom:17px;padding:22px 25px}.back-link{color:#9aa5aa;font-size:11px;text-decoration:none}.back-link:before{content:"‹ "}.tool-heading .eyebrow{margin-top:10px}.tool-heading h1,.content-page h1{letter-spacing:-.035em;margin:4px 0 7px;font-size:clamp(28px,4vw,38px);line-height:1.2}.tool-heading p{color:var(--muted);margin:0;font-size:14px}.workspace{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:stretch;gap:15px;display:grid}.control-panel,.result-panel{border:1px solid var(--line);min-height:505px;box-shadow:var(--shadow);background:#fff;border-radius:6px;padding:22px}.drop-zone{text-align:center;cursor:pointer;background:#fbfcfc;border:1px dashed #b9c8c4;border-radius:5px;flex-direction:column;justify-content:center;align-items:center;height:100%;min-height:459px;padding:34px;transition:all .2s;display:flex}.drop-zone:hover,.drop-zone:focus-visible,.drop-zone.is-dragging{border-color:var(--accent);background:#f3fbf9;outline:none}.upload-icon{width:58px;height:58px;color:var(--accent);background:var(--accent-soft);border-radius:50%;place-items:center;margin-bottom:17px;font-size:29px;display:grid}.drop-zone h2{margin-bottom:5px;font-size:20px}.drop-zone p{max-width:350px;color:var(--muted);margin-bottom:20px;font-size:13px}.button{min-height:43px;color:var(--ink);cursor:pointer;background:#fff;border:1px solid #0000;border-radius:5px;justify-content:center;align-items:center;padding:9px 20px;font-size:14px;font-weight:700;text-decoration:none;display:inline-flex}.button-primary{color:#fff;background:var(--accent)}.button-primary:hover{background:var(--accent-dark)}.button-secondary{background:#fff;border-color:#d9e0e3}.button-secondary:hover{color:var(--accent);border-color:var(--accent)}.file-summary{background:#f7f9f9;border-radius:5px;justify-content:space-between;align-items:center;gap:16px;padding:15px;display:flex}.file-summary div{min-width:0;display:grid}.file-summary strong{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.file-summary span:last-child,.summary-label{color:var(--muted);font-size:12px}.text-button{color:var(--accent);cursor:pointer;white-space:nowrap;background:0 0;border:0;padding:7px;font-weight:700}.settings{gap:17px;margin-top:20px;display:grid}.settings label{gap:6px;font-weight:700;display:grid}.settings input,.settings select{width:100%;min-height:44px;color:var(--ink);background:#fff;border:1px solid #ced7da;border-radius:5px;padding:8px 12px}.settings input:focus,.settings select:focus{outline:3px solid var(--accent-soft);border-color:var(--accent)}.input-with-unit{display:block;position:relative}.input-with-unit input{padding-right:45px}.input-with-unit>span{color:var(--muted);font-weight:500;position:absolute;top:10px;right:13px}.field-note{color:var(--muted);margin:-6px 0 0;font-size:12px}.settings-row{grid-template-columns:1fr 1fr;gap:11px;display:grid}.checkbox-row{color:var(--muted);align-items:center;font-size:13px;gap:9px!important;font-weight:600!important;display:flex!important}.checkbox-row input{width:17px;min-height:17px;accent-color:var(--accent)}.range-row{grid-template-columns:1fr 46px;align-items:center;gap:11px;display:grid}.range-row input{accent-color:var(--accent);padding:0}.range-value{text-align:center;color:var(--accent);font-weight:800}.result-panel{place-items:center;display:grid}.empty-result,.processing,.error-result{text-align:center;max-width:360px}.result-placeholder{aspect-ratio:4/3;background:#eef5f3;border:1px solid #d8e5e1;border-radius:6px;width:176px;margin:0 auto 22px;display:block;position:relative}.result-placeholder:after{content:"预览";color:#b1c0bb;place-items:center;font-size:12px;display:grid;position:absolute;inset:0}.empty-result h2,.processing h2,.error-result h2{margin-bottom:6px;font-size:18px}.empty-result p,.processing p,.error-result p{color:var(--muted);font-size:13px}.spinner{border:4px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;width:44px;height:44px;margin:0 auto 20px;animation:1s linear infinite spin;display:block}@keyframes spin{to{transform:rotate(360deg)}}.error-mark{color:#fff;background:#c85c49;border-radius:50%;place-items:center;width:44px;height:44px;margin:0 auto 20px;font-weight:900;display:grid}.success-result,.mask-editor{align-self:stretch;width:100%}.preview-wrap{background:#eef2f1;border-radius:5px;place-items:center;min-height:280px;padding:16px;display:grid;overflow:auto}.preview-wrap img{object-fit:contain;width:auto;max-width:100%;height:auto;max-height:520px;display:block}.result-heading{justify-content:space-between;align-items:end;gap:12px;margin:17px 0 13px;display:flex}.result-heading h2,.editor-heading h2{margin:2px 0 0;font-size:19px}.status-badge,.saving-rate{color:var(--accent);font-size:11px;font-weight:800}.result-stats{border:1px solid var(--line);border-radius:5px;grid-template-columns:repeat(3,1fr);margin:0 0 16px;display:grid}.result-stats div{text-align:center;border-right:1px solid var(--line);padding:10px 7px}.result-stats div:last-child{border:0}.result-stats dt{color:var(--muted);font-size:11px}.result-stats dd{margin:2px 0 0;font-size:13px;font-weight:800}.success-result>.button{width:100%}.result-actions{grid-template-columns:1fr 1.2fr;gap:9px;display:grid}.result-actions .button{width:100%}.editor-heading{justify-content:space-between;align-items:start;gap:12px;margin-bottom:13px;display:flex}.editor-canvas-wrap{background:#e5ebe9;border-radius:5px;place-items:center;max-height:430px;display:grid;overflow:hidden}.editor-canvas-wrap canvas{cursor:crosshair;touch-action:none;max-width:100%;max-height:430px;display:block}.brush-tools{grid-template-columns:repeat(4,1fr);gap:6px;margin:13px 0 11px;display:grid}.brush-button{min-height:38px;color:var(--muted);border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:5px;padding:6px 4px;font-size:11px;font-weight:750}.brush-button:hover:not(:disabled){color:var(--accent);border-color:var(--accent)}.brush-button.is-active{color:#fff;background:var(--accent);border-color:var(--accent)}.brush-button:disabled{opacity:.45;cursor:not-allowed}.brush-size{color:var(--muted);grid-template-columns:auto 1fr 32px;align-items:center;gap:9px;margin-bottom:11px;font-size:12px;font-weight:650;display:grid}.brush-size input{width:100%;min-height:22px;accent-color:var(--accent);padding:0}.brush-size strong{color:var(--accent);text-align:right}.mask-editor>.button{width:100%;margin-top:13px}.step-list{gap:7px;display:grid}.step-list p{background:#f6f8f8;border-radius:5px;align-items:center;gap:10px;margin:0;padding:9px 11px;display:flex}.step-list p>b{color:#fff;background:var(--accent);border-radius:50%;flex:none;place-items:center;width:25px;height:25px;font-size:11px;display:grid}.step-list p>span{line-height:1.35;display:grid}.step-list strong{font-size:12px}.step-list small{color:var(--muted);font-size:10px}.auto-detect-card{background:#eef9f6;border:1px solid #d6eee8;border-radius:5px;justify-content:space-between;align-items:center;gap:12px;padding:11px 12px;display:flex}.auto-detect-card>div{min-width:0;line-height:1.35;display:grid}.auto-detect-card strong{font-size:13px}.auto-detect-card small{color:var(--muted);font-size:10px}.auto-detect-card .button{flex:none;min-height:34px;padding:5px 11px;font-size:11px}.compact-settings{align-items:end}.compact-settings label>span{font-size:12px}.compact-settings label>span b{color:var(--accent)}.compact-settings input[type=range]{accent-color:var(--accent);padding:0}.watermark-tools{grid-template-columns:repeat(4,1fr);margin:-5px 0 0}.watermark-result{overflow:hidden}.watermark-editor{align-self:stretch;width:100%}.mask-status{color:var(--muted);font-size:11px}.watermark-canvas-wrap{background-color:#e8eceb;background-image:linear-gradient(45deg,#dce2e0 25%,#0000 25%),linear-gradient(-45deg,#dce2e0 25%,#0000 25%),linear-gradient(45deg,#0000 75%,#dce2e0 75%),linear-gradient(-45deg,#0000 75%,#dce2e0 75%);background-position:0 0,0 9px,9px -9px,-9px 0;background-size:18px 18px;border-radius:5px;place-items:center;min-height:300px;max-height:530px;display:grid;position:relative;overflow:auto}.watermark-canvas-wrap canvas{cursor:none;touch-action:none;max-width:100%;height:auto;display:block;box-shadow:0 2px 12px #00000014}.brush-cursor{z-index:3;pointer-events:none;border:2px solid #fff;border-radius:50%;position:absolute;transform:translate(-50%,-50%);box-shadow:0 0 0 1px #ef4444cc}.editor-help{margin-top:10px}.model-progress{background:var(--accent-soft);border-radius:10px;width:260px;height:6px;margin:15px auto 7px;overflow:hidden}.model-progress span{background:var(--accent);border-radius:inherit;width:8%;height:100%;transition:width .3s;display:block}.processing small{color:#9aa4aa;font-size:10px}.check-list{gap:6px;margin:0 0 16px;padding:0;list-style:none;display:grid}.check-list li{color:var(--muted);background:#f6f8f8;border-radius:4px;justify-content:space-between;gap:16px;padding:8px 11px;font-size:12px;display:flex}.check-list strong{color:var(--accent)}.important-note{color:var(--warning)!important}.background-field{border:0;margin:0;padding:0}.background-field legend{margin-bottom:6px;font-weight:700}.background-options{grid-template-columns:repeat(4,1fr);gap:7px;display:grid}.background-options-three{grid-template-columns:repeat(3,1fr)}.background-options label{cursor:pointer;border:1px solid #ced7da;border-radius:5px;flex-direction:column;justify-content:center;align-items:center;gap:3px;min-height:58px;padding:7px 4px;font-size:12px;font-weight:650;display:flex}.background-options label:has(input:checked){border-color:var(--accent);outline:2px solid var(--accent-soft)}.background-options input{opacity:0;pointer-events:none;width:1px;min-height:1px;position:absolute}.color-chip{border:1px solid #b8c7bf;border-radius:50%;place-items:center;width:22px;height:22px;font-size:9px;display:grid}.color-original{color:#fff;background:conic-gradient(#438edb 0 25%,#fff 0 50%,#d94141 0 75%,#87938d 0);border-color:#0000}.color-white{background:#fff}.color-blue{background:#438edb;border-color:#438edb}.color-red{background:#d94141;border-color:#d94141}.dimension-lock-note{color:var(--muted);background:#f6f8f8;border-radius:5px;justify-content:space-between;gap:12px;margin:0;padding:11px 13px;font-size:12px;display:flex}.dimension-lock-note strong{color:var(--accent)}.privacy-note{border:1px solid var(--line);background:#fff;border-radius:6px;grid-template-columns:160px 1fr;gap:18px;margin-top:14px;padding:17px 21px;display:grid}.privacy-note p{color:var(--muted);margin:0;font-size:13px}.content-page{border:1px solid var(--line);background:#fff;border-radius:7px;max-width:840px;margin:24px auto 50px;padding:40px}.content-page h2{margin-top:34px}.content-page p,.content-page li{color:var(--muted);font-size:15px}.site-footer{width:min(1180px,100% - 44px);color:var(--muted);border-top:1px solid var(--line);grid-template-columns:1fr auto;align-items:start;gap:8px 28px;margin:auto auto 0;padding:26px 4px 35px;font-size:11px;display:grid}.site-footer strong{color:#536168;font-size:14px}.site-footer p{margin:1px 0 0}.footer-links{grid-row:span 2;gap:18px;display:flex}.footer-links a{text-decoration:none}.footer-links a:hover{color:var(--accent)}.footer-records{flex-wrap:wrap;align-items:center;gap:4px 14px;display:flex}.footer-records a{color:var(--muted);text-decoration:none}.footer-records a:hover{color:var(--accent)}@media (width<=1020px){:root{--sidebar:195px}.site-header,.search-strip{padding-inline:22px}.home-intro{padding-inline:38px}.tool-grid,.guide-requirements{grid-template-columns:repeat(2,1fr)}.guide-requirements div{border-bottom:1px solid var(--line)}}@media (width<=820px){.site-sidebar{display:none}.site-frame{margin-left:0}.site-header{z-index:30;height:58px;position:sticky;top:0}.site-header>nav,.header-badge{display:none}.mobile-brand{align-items:center;gap:9px;text-decoration:none;display:flex}.mobile-brand .brand-mark{width:31px;height:31px;font-size:14px}.mobile-menu{display:block;position:relative}.mobile-menu summary{cursor:pointer;padding:7px;font-size:21px;list-style:none}.mobile-menu nav{border:1px solid var(--line);width:170px;box-shadow:var(--shadow);background:#fff;border-radius:6px;padding:7px;display:grid;position:absolute;top:40px;right:0}.mobile-menu nav a{padding:9px 11px;text-decoration:none}.search-strip{padding:12px 15px}.quick-links{display:none}main,.site-footer{width:min(100% - 24px,1180px)}.home-intro{grid-template-columns:1fr;min-height:auto;padding:44px 30px}.hero-visual{display:none}.workspace{grid-template-columns:1fr}.control-panel,.result-panel{min-height:450px;padding:17px}.drop-zone{min-height:414px;padding:24px}.privacy-note{grid-template-columns:1fr;gap:4px}.home-guide-grid{grid-template-columns:repeat(2,1fr)}.guide-hero{flex-direction:column;align-items:stretch}.guide-columns,.related-guides>div{grid-template-columns:1fr}}@media (width<=560px){body{font-size:14px}.search-strip{display:none}.tool-tabs{margin-top:12px;padding-inline:5px}.tool-tabs a{padding-inline:12px}.home-intro{padding:40px 22px}.home-intro h1{font-size:38px}.home-intro p{font-size:14px}.hero-actions{flex-direction:column;align-items:stretch}.home-section,.feature-section,.home-faq{padding:22px 17px}.section-heading{flex-direction:column;align-items:start;gap:4px}.tool-grid,.feature-grid,.home-guide-grid,.guide-card-grid{grid-template-columns:1fr}.tool-card{min-height:185px}.home-faq{grid-template-columns:1fr;gap:16px}.tool-shell{padding-top:12px}.tool-heading{padding:18px}.tool-heading h1{font-size:29px}.file-summary{align-items:flex-start}.result-stats{grid-template-columns:1fr}.result-stats div{border-right:0;border-bottom:1px solid var(--line);justify-content:space-between;display:flex}.settings-row{grid-template-columns:1fr}.background-options{gap:5px}.site-footer{grid-template-columns:1fr}.footer-links{order:3;grid-row:auto}.preview-wrap{min-height:240px;padding:10px}.preview-wrap img{max-height:420px}.guides-index>header,.guide-hero{padding:24px 19px}.guide-requirements{grid-template-columns:1fr}.guide-requirements div{border-right:0}.guide-warning{grid-template-columns:1fr;gap:4px}.guide-columns section{padding:23px 19px}.guide-cta{flex-direction:column;align-items:stretch;padding:23px 19px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation-duration:.01ms!important}}