:root{color-scheme:dark;--bg:#101a20;--panel:#152229;--field:#101c23;--line:#2a3a42;--muted:#9cafb7;--text:#eef3f2;--accent:#9ce2d0;--teal:#65cbb4;--cream:#f2f0e6;--amber:#e9c67c;font-family:Inter,'Segoe UI',Arial,sans-serif;font-synthesis:none;scroll-behavior:smooth}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}button,input,select,textarea{font:inherit}button,a,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.42}button,input,select,textarea{border-radius:6px}button{color:inherit}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}input:focus,select:focus,textarea:focus{outline:2px solid var(--teal);outline-offset:1px}input,textarea,select{width:100%;background:var(--field);border:1px solid #34464f;color:var(--text);padding:11px 12px;line-height:1.4;transition:border-color .15s}input::placeholder,textarea::placeholder{color:#788e99}input[aria-invalid=true],select[aria-invalid=true]{border-color:#eea79d}textarea{resize:vertical;min-height:70px}label{display:block;font-size:12px;font-weight:550;color:#d6e0e3}label input,label select{display:block;margin-top:7px}svg{fill:none;stroke:currentColor;stroke-width:1.5}.wrap{max-width:1240px;width:calc(100% - 96px);margin:auto}.header{display:flex;align-items:center;justify-content:space-between;height:96px;border-bottom:1px solid var(--line);gap:30px}.brand{font-size:23px;font-weight:650;letter-spacing:-.8px;display:flex;align-items:center}.brand>span:not(.brand-icon):not(.us-label){color:var(--accent)}.brand-icon{font-size:36px;line-height:1;color:var(--accent);margin-right:11px;border:1px solid #44766e;border-radius:9px;width:36px;height:34px;display:inline-flex;align-items:center;justify-content:center;font-weight:400;transform:rotate(-5deg)}.us-label{font-size:9px;color:#a0b6bb;border:1px solid #3d5059;padding:1px 5px;letter-spacing:1px;margin-left:10px;align-self:center}.header nav{display:flex;gap:30px;color:#b2c0c5;font-size:12px}.byline{color:#a4b6bd;font-size:12px}.byline strong{color:#e1ebe9;font-weight:550}.byline>span{margin-left:10px}.intro{padding:52px 0 38px;display:flex;justify-content:space-between;gap:40px;align-items:flex-end}.eyebrow{font-size:10px;font-weight:650;letter-spacing:2px;color:var(--accent);margin:0 0 17px;display:flex;align-items:center;gap:9px}.dot{height:5px;width:5px;background:var(--teal);border-radius:50%}h1{font-size:clamp(36px,4.4vw,56px);line-height:1.08;font-weight:540;letter-spacing:-2.4px;margin:0 0 20px}h1>span{color:#aabdc2}.lede{font-size:14px;color:#aebec6;line-height:1.7;margin:0}.intro-note{padding-bottom:3px;width:265px;border-left:1px solid #38534f;padding-left:25px;color:#c7d4d6;font-size:12px}.intro-note p{margin:9px 0}.intro-note a{font-size:11px;color:var(--accent)}.intro-note a span{margin-left:25px}.tiny-envelope{color:var(--accent);font-size:23px;line-height:1}.workspace{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(0,1fr);gap:24px;scroll-margin-top:25px}.tool-panel,.preview-panel{border:1px solid var(--line);background:var(--panel);border-radius:12px;padding:25px 27px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:23px}.panel-heading>div{display:flex;align-items:center;gap:11px}.step{font:11px 'SFMono-Regular',Consolas,monospace;color:#789199}.panel-heading h2{font-size:16px;font-weight:550;margin:0;letter-spacing:-.3px}.text-button{padding:0;background:none;border:0;color:#a4b8be;font-size:11px;white-space:nowrap}.text-button:hover{color:var(--accent)}.text-button span{margin-left:5px}.address-types{padding:4px;background:#0e1a20;border:1px solid #2b3d46;border-radius:7px;display:flex;gap:3px;margin-bottom:24px}.address-types button{border:0;flex:1;white-space:nowrap;background:transparent;font-size:11px;color:#a6bbc2;padding:9px 6px}.address-types button[aria-pressed=true]{background:#29423f;color:#b5f2e0;box-shadow:0 1px 3px #0004}.address-types button:hover{background:#21333b}.paste-area label{font-size:11px}.paste-area label span{color:#98afb8;font-weight:400}.paste-input{position:relative;margin-top:8px}.paste-input textarea{padding-right:114px;font-size:12px}.paste-input button{position:absolute;right:10px;top:15px;color:var(--accent);background:#223b39;border:1px solid #3c635a;font-size:11px;padding:7px 10px}.paste-input button span{margin-left:7px}.field-hint{font-size:10px;font-weight:400;color:#91a9b3;margin:7px 0 0;line-height:1.6}.or{display:flex;align-items:center;margin:20px 0;gap:14px;color:#738e98;font-size:8px;letter-spacing:1.5px}.or:before,.or:after{content:'';height:1px;background:var(--line);flex:1}.fields{display:grid;grid-template-columns:1.2fr 1fr;gap:17px 14px}.full{grid-column:1/-1}.optional{font-size:10px;font-weight:400;color:#879fa9;float:right}.zip-field{grid-column:1/-1}.zip-field input{max-width:100%}.inline{margin-top:7px;color:var(--accent)}.extra-options{margin:21px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0}.extra-options summary{font-size:10px;color:#b5c7cd}.extra-options summary span{float:right;color:var(--accent)}summary{list-style:none;cursor:pointer}summary::-webkit-details-marker{display:none}.extra-options[open] summary{margin-bottom:15px}.check{display:flex;align-items:flex-start;gap:9px;font-size:10px;font-weight:400;color:#aabfc7;line-height:1.6;margin-top:13px}.check input{width:14px;height:14px;flex-shrink:0;margin-top:2px;accent-color:var(--teal)}.actions{display:flex;gap:10px}.button{display:inline-flex;align-items:center;justify-content:center;gap:13px;font-size:12px;padding:12px 16px;min-height:43px;border:1px solid transparent;font-weight:600;transition:background .15s,transform .15s}.button:active{transform:translateY(1px)}.primary{background:var(--accent);color:#102820;flex:1}.primary:hover{background:#b2f1df}.secondary{background:transparent;border-color:#4b666e;color:#c4d3d8;flex:1}.secondary:hover{background:#233b43}.service-note{margin:14px 0 0;font-size:9px;color:#91aab3;display:flex;align-items:flex-start;gap:7px}.status-dot{margin-top:4px;width:5px;height:5px;flex-shrink:0;background:var(--amber);border-radius:100%}.service-note.ready .status-dot{background:var(--teal)}.message{margin-top:15px;background:#24363b;border:1px solid #49616a;padding:12px;font-size:11px;border-radius:6px;color:#d7e2e3}.message a{color:var(--accent);text-decoration:underline}.message.error{background:#392c2c;border-color:#855b54;color:#f0c5be}.message ul{padding-left:16px;margin:0}.result-column{display:flex;flex-direction:column;gap:23px}.preview-panel{padding:25px 24px 20px}.badge{font:8px Consolas,monospace;color:#a9bebf;background:#24353c;border:1px solid #3c535b;letter-spacing:.8px;padding:4px 7px;border-radius:4px;white-space:nowrap}.badge.verified{color:#b6f2d8;border-color:#568575}.badge.warn{color:#f0d7a5;border-color:#80704f}.envelope{background:var(--cream);color:#26352f;border-radius:5px;padding:22px 24px 17px;box-shadow:0 8px 24px #0002;min-height:232px;display:flex;flex-direction:column;position:relative;overflow:hidden}.envelope-top{display:flex;justify-content:space-between;align-items:flex-start;color:#7d857d;font-size:8px;letter-spacing:1.4px}.stamp{width:56px;height:65px;border:1px dashed #929b8a;text-align:center;display:flex;flex-direction:column;justify-content:center;gap:2px;color:#7d8979;transform:rotate(5deg);font-size:7px;letter-spacing:1px;padding:4px}.stamp svg{height:23px;width:36px;margin:auto}.stamp span:last-child{font-size:5px;letter-spacing:0}.envelope pre{font:600 15px/1.65 Consolas,'SFMono-Regular',monospace;letter-spacing:.35px;margin:8px 0 26px;white-space:pre-wrap;overflow-wrap:anywhere}.envelope pre.empty-output{font-family:inherit;font-weight:500;font-size:17px;color:#7d887f;letter-spacing:-.4px;margin:2px 0 4px}.envelope #empty-caption{font-size:11px;color:#879084;margin:0 0 32px}.envelope-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;border-top:1px solid #d9dccf;padding-top:12px;font-size:7px;letter-spacing:1px;color:#7a8377}.postal-lines{height:16px;width:63px;background:repeating-linear-gradient(90deg,#9ca28f 0 2px,transparent 2px 4px,#9ca28f 4px 5px,transparent 5px 8px);opacity:.5}.result-info{display:flex;gap:9px;align-items:flex-start;margin:17px 0;color:#a0b4bc}.result-info p{margin:0;font-size:10px;line-height:1.7}.info-icon{border:1px solid #6b838a;border-radius:50%;font-size:9px;line-height:14px;width:14px;flex-shrink:0;text-align:center;margin-top:1px}.warnings{font-size:10px;padding:12px 12px 12px 26px;background:#2c3330;border:1px solid #555b45;color:#e2d8b9;border-radius:5px}.warnings li+li{margin-top:5px}.copy-actions{display:flex;gap:22px;align-items:center}.copy{background:#243a3e;border-color:#456166;color:#ccdfdf;flex:1;font-weight:500}.copy:hover{background:#304b4e}.copy svg{height:16px;width:16px}.official-link{display:block;font-size:10px;color:var(--accent);border-top:1px solid var(--line);padding-top:16px;margin-top:18px}.official-link span{float:right}.corrections{font-size:10px;padding:12px;border:1px solid #44655c;border-radius:5px;margin-bottom:15px}.corrections strong{color:var(--accent)}.corrections pre{white-space:pre-wrap;overflow-wrap:anywhere;font:11px/1.7 Consolas,monospace;color:#d6e4df}.skeletrace{background:#102b2b;border:1px solid #345d56;border-radius:12px;overflow:hidden}.promo-top{padding:17px 22px 0;display:flex;justify-content:space-between;font-size:7px;letter-spacing:1.5px;color:#94bbb0}.promo-top>span:last-child{font-size:16px;line-height:10px}.promo-content{position:relative;padding:21px 22px 24px;display:flex;gap:0;align-items:center}.promo-copy{position:relative;z-index:1;flex:1}.promo-copy h2{font-size:24px;font-weight:550;letter-spacing:-.8px;margin:0 0 8px;display:flex;align-items:center;gap:8px}.promo-copy h2 svg{width:24px;height:24px;stroke:#a3e7d0;stroke-width:1.5;flex-shrink:0}.promo-copy h2 svg circle{fill:#102b2b}.promo-tagline{font-size:12px!important;color:#b9e0d3!important;margin:0 0 9px!important}.promo-copy>p{font-size:10px;color:#9ebfb7;line-height:1.75;max-width:235px;margin:0 0 19px}.promo-cta{display:inline-flex;align-items:center;gap:24px;font-size:11px;color:#b0f0d9;border-bottom:1px solid #4d8272;padding-bottom:5px}.network{width:145px;min-width:125px;height:180px;margin-right:-23px;color:#71bba7}.network .network-grid{stroke:#245044;stroke-width:.4}.edges{stroke:#438675;stroke-width:.8}.nodes{fill:#153c34;stroke:#85d5b8}.network .halo{stroke:#6ac2a4;stroke-dasharray:2 4;stroke-width:.5}.network .main-node{fill:#b2ebd2;stroke:#b2ebd2}.network text{fill:#7cae9c;stroke:none;font:6px Consolas,monospace;letter-spacing:1px}.promo-bottom{display:flex;gap:22px;padding:11px 22px;border-top:1px solid #2a5049;color:#7caa9b;font:7px Consolas,monospace;letter-spacing:1px}.guide{padding:66px 0 50px;scroll-margin-top:30px}.section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}.section-title .eyebrow{font-size:8px;letter-spacing:1.6px;margin-bottom:10px}.section-title h2{font-size:29px;letter-spacing:-.8px;font-weight:500;margin:0}.section-title>a{font-size:10px;color:#a4b9bf;padding-bottom:6px}.section-title>a span{margin-left:12px}.guide-layout{display:grid;grid-template-columns:1.15fr 1fr;gap:46px;padding:28px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.guide-example{background:#17262d;border-left:2px solid #668e84;padding:19px 24px}.guide-label{display:block;font-size:7px;letter-spacing:1.4px;color:#8ca7af;margin-bottom:18px}.guide-example>div{display:flex;justify-content:space-between;gap:15px;align-items:center;margin:10px 0}.guide-example code{font:11px Consolas,monospace;color:#c9ddd6;white-space:nowrap}.guide-example>div span{font-size:9px;color:#829ea7;white-space:nowrap}.guide-example>p{font-size:8px;color:#7d99a3;margin:20px 0 0}.quick-rules{display:flex;flex-direction:column;justify-content:space-evenly;gap:15px}.quick-rules>div{display:flex;gap:17px}.quick-rules>div>span{font:10px Consolas,monospace;color:var(--accent);margin-top:2px}.quick-rules p{margin:0;color:#9eb4bd;font-size:11px;line-height:1.8}.quick-rules strong{font-weight:550;color:#d5e0e1}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 35px;margin-top:10px}.faq-grid details{border-bottom:1px solid var(--line);padding:19px 0}.faq-grid summary{font-size:12px;color:#c4d5d9;display:flex;justify-content:space-between;gap:20px}.faq-grid summary>span{color:#8dacb0}.faq-grid details[open] summary>span,.extra-options[open] summary>span{transform:rotate(45deg)}.faq-grid details p{font-size:11px;line-height:1.8;color:#9eb5bd;margin:15px 0}.faq-grid details code{display:block;font:11px/1.8 Consolas,monospace;color:#b9d4c9;margin-bottom:15px}.faq-grid details a{font-size:10px;color:var(--accent);display:inline-block;margin-top:7px;margin-right:10px}.about-strip{display:grid;grid-template-columns:1fr 1.2fr auto;gap:40px;align-items:center;padding:28px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.about-strip .eyebrow{font-size:8px;letter-spacing:1.4px;margin-bottom:8px}.about-strip h2{font-size:20px;font-weight:500;letter-spacing:-.5px;margin:0}.about-strip>p{font-size:10px;line-height:1.85;color:#95adb7;margin:0}.about-strip>a{font-size:10px;color:var(--accent);white-space:nowrap}.privacy{padding:35px 0 40px;display:grid;grid-template-columns:1fr 1fr;gap:12px 42px}.privacy>div{grid-column:1/-1;display:flex;align-items:center;gap:10px}.privacy h2{font-size:13px;font-weight:500;margin:0}.privacy-symbol{color:var(--accent);font-size:24px;line-height:1}.privacy>p{font-size:9px;line-height:1.85;color:#91a9b3;margin:0}.privacy a{text-decoration:underline}.footer{border-top:1px solid var(--line);padding:24px 0 32px;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:9px;color:#78949e}.footer>a{color:#b8cacd}.footer>div{display:flex;gap:20px}.skip{position:fixed;top:-100px;left:20px;background:var(--accent);color:#102820;padding:12px;z-index:20}.skip:focus{top:12px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);padding:12px 20px;border-radius:8px;background:#afe5d2;color:#13342a;box-shadow:0 4px 25px #0008;z-index:100;font-size:12px}.noscript{padding:20px;background:#463b2b;color:#ffe5bc}[hidden]{display:none!important}
@media(min-width:1450px){.intro{padding-top:60px;padding-bottom:44px}.tool-panel{padding:28px 32px}.preview-panel{padding:28px 28px 22px}.envelope{min-height:250px}.workspace{gap:28px}}
@media(max-width:1050px){.wrap{width:calc(100% - 56px)}.tool-panel,.preview-panel{padding:22px}.optional{float:none;display:inline;font-size:9px;margin-left:4px}.network{width:100px;min-width:80px;margin-right:-30px;opacity:.8}.promo-copy>p{max-width:210px}.guide-layout{gap:26px}.guide-example>div{display:block}.guide-example>div>span{display:block;margin-top:3px}.about-strip{grid-template-columns:1fr 1.2fr}.about-strip>a{grid-column:1/-1;margin-top:-20px}.actions{flex-direction:column}.panel-heading h2{font-size:14px}.badge{font-size:7px}}
@media(max-width:760px){.wrap{width:calc(100% - 36px)}.header{height:77px;gap:14px}.brand{font-size:20px}.brand-icon{font-size:29px;width:29px;height:29px;margin-right:8px}.us-label{margin-left:7px}.header nav{display:none}.byline{font-size:10px}.byline>span{margin-left:2px}.intro{padding:35px 0 29px;gap:20px}.intro-note{display:none}h1{font-size:40px;letter-spacing:-1.8px}.lede{font-size:12px}.eyebrow{font-size:8px;letter-spacing:1.5px}.workspace{grid-template-columns:1fr;gap:18px}.tool-panel,.preview-panel{padding:23px 21px}.actions{flex-direction:row}.network{width:145px;min-width:120px;margin-right:-12px;opacity:1}.promo-copy>p{max-width:280px}.promo-copy h2{font-size:26px}.promo-copy>p{font-size:11px}.promo-top{font-size:8px}.promo-bottom{font-size:8px}.section-title{align-items:flex-start;flex-direction:column;gap:12px}.section-title h2{font-size:26px}.guide{padding:43px 0 33px}.guide-layout{grid-template-columns:1fr;gap:25px;padding:20px 0}.guide-example>div{display:flex}.guide-example>div>span{display:inline;font-size:8px}.guide-example code{font-size:10px}.faq-grid{grid-template-columns:1fr}.about-strip{grid-template-columns:1fr;gap:14px}.about-strip>a{margin-top:0}.privacy{grid-template-columns:1fr;gap:14px;padding:28px 0}.privacy>div{grid-column:auto}.privacy>p{font-size:10px}.footer{flex-wrap:wrap;gap:15px;font-size:9px}.footer>span{display:none}.paste-input textarea{font-size:11px}.envelope{min-height:250px}.panel-heading h2{font-size:16px}.badge{font-size:7px}}
@media(max-width:380px){.actions{flex-direction:column}.address-types button{font-size:10px;padding:8px 4px}.brand{font-size:18px}.us-label{display:none}.tool-panel,.preview-panel{padding:20px 16px}.guide-example{padding:17px}.guide-example>div{display:block}.guide-example>div span{display:block}.network{min-width:80px;width:95px;opacity:.7}.promo-copy h2{font-size:23px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*{transition:none!important}}
@media print{body{background:white;color:black}.header,.intro,.tool-panel,.skeletrace,.guide,.about-strip,.privacy,.footer,.copy-actions,.official-link,.result-info,.warnings,.corrections,#copy-status,.panel-heading,.envelope-top,.envelope-bottom,#toast{display:none!important}.wrap{width:100%;max-width:none}.workspace{display:block}.preview-panel{border:0;background:white;padding:0}.envelope{padding:20mm;background:white;box-shadow:none;color:black;min-height:0}.envelope pre{font:14pt/1.7 Arial,sans-serif}#empty-caption{display:none!important}}