:root{
  --bg:#eef1ed;
  --surface:#fbfcf9;
  --surface-soft:#e5ebe4;
  --ink:#14201c;
  --ink-soft:#25332e;
  --muted:#4a5752;
  --line:#d5ded7;
  --accent:#c7ed52;
  --accent-dark:#4e6112;
  --warm:#f5a27c;
  --shadow:0 24px 70px #18332912;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Manrope,system-ui,sans-serif}
button,input{font:inherit}
button{border:0;cursor:pointer}
a{color:inherit}
.app-shell{max-width:1240px;margin:auto;padding:0 36px;min-height:100vh}
.section-wrap{max-width:1080px;margin-left:auto;margin-right:auto}
.topbar{height:84px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;gap:7px;color:var(--ink);font-size:23px;font-weight:800;letter-spacing:-1.5px;text-decoration:none}
.brand-mark{color:var(--accent-dark);font-size:31px;line-height:1}
.brand small{margin-left:9px;color:var(--muted);font:500 8px 'DM Mono',monospace;letter-spacing:.14em}
.topnav{display:flex;gap:28px;color:var(--muted);font-size:11px;font-weight:700}
.topnav a{text-decoration:none;transition:color .2s}
.topnav a:hover{color:var(--ink)}
.header-actions{display:flex;align-items:center;justify-content:flex-end;gap:19px}
.status-pill{display:flex;align-items:center;gap:6px;color:var(--accent-dark);font:500 9px 'DM Mono',monospace;text-transform:uppercase;letter-spacing:.12em}
.status-pill i{width:7px;height:7px;border-radius:50%;background:var(--accent-dark);box-shadow:0 0 0 4px #c7ed5238}
.icon-button{display:grid;place-items:center;min-width:44px;min-height:44px;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:transparent;color:var(--ink);font-size:18px;transition:.2s}
.icon-button:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:rotate(20deg)}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center;padding:88px 0 76px}
.eyebrow,.step-label{color:var(--accent-dark);font:500 9px 'DM Mono',monospace;letter-spacing:.15em}
.hero h1{margin:17px 0 22px;font-size:clamp(54px,7vw,86px);line-height:.91;letter-spacing:-.085em;font-weight:800}
.hero h1 em{color:var(--accent-dark);font-family:'Playfair Display',Georgia,serif;font-weight:500;letter-spacing:-.07em}
.hero-copy>p{max-width:400px;margin:0;color:var(--muted);font-size:15px;line-height:1.75}
.hero-links{display:flex;align-items:center;gap:22px;margin-top:31px}
.link-arrow{color:var(--ink);font-size:12px;font-weight:800;text-decoration:none}
.link-arrow span{display:inline-block;margin-left:10px;color:var(--accent-dark);font-size:17px;transition:transform .2s}
.link-arrow:hover span{transform:translateX(4px)}
.hero-caption{color:var(--muted);font:10px 'DM Mono',monospace}
.hero-card{position:relative;min-height:278px;padding:23px;background:var(--ink);border-radius:20px;overflow:hidden;color:#f4f8ef;box-shadow:var(--shadow)}
.hero-card:before{content:'';position:absolute;width:220px;height:220px;right:-72px;top:-88px;border:1px solid #c7ed5238;border-radius:50%}
.hero-card-top,.hero-card-bottom{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between}
.hero-card-top{color:#b8c7be;font:500 9px 'DM Mono',monospace;letter-spacing:.12em}
.hero-dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.hero-orbit{position:absolute;inset:50% auto auto 50%;width:210px;height:210px;transform:translate(-50%,-53%)}
.orbit-ring{position:absolute;inset:0;border:1px solid #c7ed524f;border-radius:50%}
.orbit-ring-one{transform:rotate(28deg) scaleX(.66)}
.orbit-ring-two{transform:rotate(-28deg) scaleX(.66)}
.orbit-center{position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%);color:var(--accent);font-size:42px;font-weight:300}
.hero-card-bottom{position:absolute;bottom:22px;left:23px;right:23px;align-items:flex-end}
.hero-card-bottom strong{font-size:14px}
.hero-card-bottom span{max-width:170px;color:#a9b8af;font:9px 'DM Mono',monospace;line-height:1.5;text-align:right}
.workspace{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(260px,.75fr);gap:18px;align-items:stretch}
.measure-card{padding:27px 29px 24px;background:var(--ink);border-radius:20px;color:#f3f7f1;box-shadow:var(--shadow)}
.measure-card-header,.section-heading,.measure-readout,.measure-card-footer,.quick-panel-header{display:flex;align-items:center;justify-content:space-between}
.measure-card .step-label{color:var(--accent)}
.measure-card-header h2{margin:8px 0 0;font-size:23px;letter-spacing:-.06em}
.text-button{background:none;color:var(--accent-dark);font-size:11px;font-weight:800}
.text-button span{display:inline-block;margin-left:6px;font-size:16px;transition:transform .2s}
.text-button:hover span{transform:translateX(3px)}
.text-button.light{color:var(--accent)}
.mode-switch{display:flex;gap:22px;margin-top:27px;border-bottom:1px solid #ffffff1d}
.mode{position:relative;padding:0 0 12px;background:none;color:#899991;font-size:12px;font-weight:800}
.mode.active{color:#fff}
.mode.active:after{content:'';position:absolute;right:0;bottom:-1px;left:0;height:2px;background:var(--accent)}
.mode:active{transform:translateY(1px)}
.instruction{max-width:500px;margin:18px 0 20px;color:#aebbb3;font-size:12px;line-height:1.65}
.instruction strong{color:#fff}
.ruler-stage{position:relative;display:grid;place-items:center;height:365px;overflow:hidden;border:1px solid #ffffff13;border-radius:13px;background:#24332d;touch-action:none;contain:layout paint}
.stage-grid{position:absolute;inset:0;background-image:linear-gradient(90deg,#b7d2c21a 1px,transparent 1px),linear-gradient(#b7d2c21a 1px,transparent 1px);background-size:32px 32px}
.ruler-top{position:absolute;top:13px;right:18px;left:57px;display:flex;justify-content:space-between;color:#93a79b;font:9px 'DM Mono',monospace;pointer-events:none}
.ruler-corner{position:absolute;top:46px;bottom:20px;left:15px;display:flex;flex-direction:column;justify-content:space-between;color:#93a79b;font:9px 'DM Mono',monospace;pointer-events:none}
.measure-target{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);border:1px solid #c7ed526b;border-radius:50%;background:radial-gradient(circle,#24332d 0 48%,var(--accent) 48.5% 49.4%,transparent 50%);box-shadow:0 0 0 12px #c7ed5208,0 15px 35px #07130d55;transition:width .12s ease-out,height .12s ease-out;box-sizing:border-box;pointer-events:none}
.target-hole{position:absolute;inset:18%;border:1px dashed #b9d0c04c;border-radius:50%}
.target-crosshair{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:var(--accent);font-size:18px}
.edge-note{position:absolute;right:18px;bottom:20px;color:#93a79b;font:9px 'DM Mono',monospace;letter-spacing:.12em;pointer-events:none}
.stage-hint{position:absolute;bottom:20px;left:18px;color:#c7ed52;font:9px 'DM Mono',monospace;letter-spacing:.08em;text-transform:uppercase;pointer-events:none}
.measure-readout{padding:22px 0 17px;border-bottom:1px solid #ffffff1d}
.readout-label{display:block;margin-bottom:5px;color:#98aaa0;font:9px 'DM Mono',monospace;letter-spacing:.12em}
.measure-readout strong{font-size:37px;letter-spacing:-.07em}
.measure-readout small{margin-left:3px;color:#9eafa6;font-size:15px;letter-spacing:0}
.size-badge{padding:10px 13px;background:#ffffff0d;border:1px solid #ffffff14;border-radius:7px;text-align:right}
.size-badge span,.size-badge b{display:block}
.size-badge span{font-size:11px;font-weight:800}
.size-badge b{margin-top:4px;color:var(--accent);font:10px 'DM Mono',monospace}
.measure-controls{display:flex;align-items:center;gap:13px;padding:19px 0}
.measure-controls input{flex:1;accent-color:var(--accent);min-height:36px;touch-action:manipulation}
.round-control{display:grid;place-items:center;min-width:44px;min-height:44px;width:44px;height:44px;border:1px solid #ffffff29;border-radius:50%;background:transparent;color:#c6d4cb;font-size:22px;line-height:1}
.round-control:hover{border-color:var(--accent);color:var(--accent)}
.round-control:active{transform:scale(.9)}
.round-control:focus-visible,.mode:focus-visible,.primary-button:focus-visible,.outline-button:focus-visible,.text-button:focus-visible,.icon-button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.round-control.filled{border-color:var(--accent);background:var(--accent);color:var(--ink)}
.action-feedback{min-height:16px;color:#c7ed52;font:9px 'DM Mono',monospace;letter-spacing:.03em;opacity:.85}
.action-feedback.pulse{animation:feedback-pulse .3s ease}
@keyframes feedback-pulse{0%{opacity:.35;transform:translateY(2px)}100%{opacity:.85;transform:translateY(0)}}
.measure-card-footer{gap:15px;padding-top:19px;border-top:1px solid #ffffff1d;color:#98aaa0;font:9px 'DM Mono',monospace}
.primary-button{padding:13px 17px;border-radius:5px;background:var(--accent);color:var(--ink);font-size:11px;font-weight:800;transition:.2s}
.primary-button:hover{background:#e0ff72;transform:translateY(-1px);box-shadow:0 7px 18px #c7ed5238}
.primary-button:active,.outline-button:active,.text-button:active{transform:translateY(1px) scale(.98)}
.primary-button span{margin-left:10px;font-size:16px;vertical-align:-2px}
.quick-panel{display:flex;flex-direction:column;padding:26px;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.quick-panel-header{align-items:flex-start}
.guide-number{color:#b3c0b8;font:11px 'DM Mono',monospace}
.quick-panel h2{margin:18px 0 25px;font-size:28px;line-height:1;letter-spacing:-.075em}
.guide-list{display:grid;gap:19px}
.guide-item{display:grid;grid-template-columns:26px 1fr;gap:10px}
.guide-item>b{color:var(--accent-dark);font:10px 'DM Mono',monospace}
.guide-item strong{font-size:12px}
.guide-item p{margin:5px 0 0;color:var(--muted);font-size:10px;line-height:1.5}
.outline-button{width:100%;margin-top:auto;padding:12px 14px;border:1px solid var(--line);border-radius:5px;background:transparent;color:var(--ink);font-size:11px;font-weight:800;text-align:left}
.outline-button span{float:right;color:var(--accent-dark);font-size:16px}
.outline-button:hover{border-color:var(--ink);background:var(--ink);color:#fff}
.lower-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding-top:88px}
.content-card{min-width:0;padding:26px;background:var(--surface);border:1px solid var(--line);border-radius:18px}
.section-heading{align-items:flex-end;margin-bottom:22px}
.section-heading h2{margin:8px 0 0;font-size:21px;letter-spacing:-.06em}
.count{color:var(--muted);font:9px 'DM Mono',monospace}
.saved-list{display:grid;gap:9px}
.empty-state{padding:25px 15px;border:1px dashed #becac1;border-radius:7px;color:var(--muted);text-align:center}
.empty-state span{color:var(--accent-dark);font-size:21px}
.empty-state p{margin:6px 0 0;font-size:11px}
.saved-item{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:13px 14px;border:1px solid var(--line);border-radius:7px;background:#fff}
.saved-item h3{margin:0 0 5px;font-size:12px}
.saved-item p{margin:0;color:var(--muted);font:9px 'DM Mono',monospace}
.saved-actions{display:flex;align-items:center;gap:10px}
.saved-value{text-align:right}
.saved-value b{display:block;font-size:16px;letter-spacing:-.04em}
.saved-value span{color:var(--accent-dark);font:9px 'DM Mono',monospace}
.share-button,.delete-button{display:grid;place-items:center;min-width:44px;min-height:44px;padding:8px;background:none;color:var(--muted);font-size:16px;border-radius:4px;transition:background .2s,color .2s}
.share-button:hover{color:var(--accent-dark);background:#eef5e9}
.delete-button:hover{color:var(--warm);background:#fcf1ed}
.chart-scroll{overflow-x:auto}
table{width:100%;border-collapse:collapse;border:1px solid var(--line);background:#fff;font-size:10px}
th,td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
th{color:var(--muted);background:var(--surface-soft);font:9px 'DM Mono',monospace;letter-spacing:.05em;text-transform:uppercase}
td:first-child{color:var(--accent-dark);font-weight:800}
tr:last-child td{border-bottom:0}
.fine-print{margin:12px 0 0;color:var(--muted);font:9px 'DM Mono',monospace;line-height:1.6}
.footer{display:flex;align-items:center;gap:25px;margin-top:90px;padding:24px 0 34px;border-top:1px solid var(--line);color:var(--muted);font:9px 'DM Mono',monospace}
.footer .brand{margin-right:auto;font-size:17px}
.footer .brand-mark{font-size:22px}
.footer-code{color:#a8b4ac}

.modal-backdrop{position:fixed;inset:0;z-index:5;display:grid;place-items:center;padding:20px;background:#14201cd9}
.modal-backdrop[hidden]{display:none}
.modal{width:min(540px,100%);padding:0;overflow:hidden;border:1px solid #ffffff16;border-radius:15px;background:var(--surface);box-shadow:0 24px 70px #07130d66}
.modal-topline{display:flex;align-items:center;justify-content:space-between;padding:18px 24px 0}
.modal-badge{color:var(--accent-dark);font:500 9px 'DM Mono',monospace;letter-spacing:.14em}
.modal-close{position:static;padding:0;background:none;color:var(--muted);font-size:25px}
.modal-close:hover{color:var(--ink)}
.modal-heading{padding:14px 24px 0}
.modal-heading h2{margin:0 0 9px;font-size:30px;letter-spacing:-.07em}
.modal-heading p{max-width:410px;margin:0;color:var(--muted);font-size:12px;line-height:1.7}
.modal-body{padding:0 24px 24px}
.calibration-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin:22px 0 18px}
.calibration-step{display:flex;align-items:center;gap:7px;color:#aaa49b;font:9px 'DM Mono',monospace;text-transform:uppercase;letter-spacing:.06em}
.calibration-step b{display:grid;place-items:center;width:20px;height:20px;border:1px solid #cfc8bd;border-radius:50%;font-size:9px;font-weight:500}
.calibration-step.is-active{color:var(--accent-dark)}
.calibration-step.is-active b{border-color:var(--accent);background:var(--accent);color:var(--ink)}
.calibration-stage{padding:15px 15px 13px;border:1px solid #d8e0d9;border-radius:7px;background:#e9eee9}
.stage-label{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font:9px 'DM Mono',monospace;letter-spacing:.09em;text-transform:uppercase}
.stage-label strong{color:var(--accent-dark);font-weight:500}
.ruler-guide{position:relative;display:grid;place-items:center;height:92px;margin:12px 0 5px;overflow-x:auto;overflow-y:hidden;border:1px solid #d5ded7;border-radius:5px;background:#f8faf7}
.ruler-guide:before{content:'';position:absolute;width:var(--guide-width,242px);height:42px;border-right:2px solid var(--accent-dark);border-left:2px solid var(--accent-dark);transition:width .15s ease}
.ruler-guide:after{content:'';width:var(--guide-width,242px);height:18px;border-top:2px solid var(--accent-dark);border-bottom:2px solid var(--accent-dark);background:repeating-linear-gradient(90deg,var(--accent-dark) 0 1px,transparent 1px 10%);opacity:.85;transition:width .15s ease}
.ruler-guide span{position:absolute;z-index:1;color:var(--accent-dark);font:9px 'DM Mono',monospace}
.ruler-scale{display:flex;justify-content:space-between;padding:0 2px;color:#899890;font:9px 'DM Mono',monospace}
.calibration-control{margin-top:16px;padding:14px 15px 12px;border:1px solid var(--line);border-radius:7px;background:#fff}
.control-header{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px}
.control-header label{color:var(--ink);font-size:12px;font-weight:700}
.control-header output{color:var(--accent-dark);font:11px 'DM Mono',monospace}
.calibration-control input{width:100%;height:6px;cursor:ew-resize;accent-color:var(--accent-dark)}
.calibration-readout{display:flex;justify-content:space-between;gap:14px;margin:13px 0 0;padding:11px 12px;background:var(--surface-soft)}
.calibration-readout div:last-child{text-align:right}
.calibration-readout span{display:block;color:var(--muted);font:9px 'DM Mono',monospace;letter-spacing:.06em;text-transform:uppercase}
.calibration-readout strong,.calibration-readout b{display:block;margin-top:4px;color:var(--ink);font:500 13px 'DM Mono',monospace}
.calibration-readout b{color:var(--accent-dark)}
.calibration-hint{margin:11px 0 0;color:var(--muted);font-size:11px;line-height:1.55}
.modal-actions{margin-top:18px}
.primary-button.full{width:100%}
.modal-note{margin:0!important;padding:0 24px 22px;color:var(--muted);font-size:10px!important;line-height:1.5}
.toast{position:fixed;right:25px;bottom:25px;z-index:8;padding:13px 17px;border-radius:5px;background:var(--ink);color:#fff;font-size:11px;opacity:0;pointer-events:none;transform:translateY(12px);transition:.25s}
.toast.show{opacity:1;transform:translateY(0)}

@media(max-width:820px){
  .app-shell{padding:0 22px}
  .topbar{grid-template-columns:1fr auto}
  .topnav{display:none}
  .hero{grid-template-columns:1fr;gap:35px;padding:62px 0 55px}
  .hero-card{min-height:220px}
  .workspace,.lower-grid{grid-template-columns:1fr}
  .quick-panel{min-height:350px}
}
@media(max-width:600px){
  .app-shell{padding:0 16px}
  .topbar{height:70px}
  .brand small,.status-pill{display:none}
  .hero{padding:48px 0 42px}
  .hero h1{font-size:57px}
  .hero-links{align-items:flex-start;flex-direction:column;gap:12px}
  .hero-card{min-height:200px}
  .measure-card{padding:22px 16px 18px;border-radius:15px}
  .measure-card-header h2{font-size:20px}
  .ruler-stage{height:300px;border-radius:10px}
  .measure-card-footer{align-items:stretch;flex-direction:column}
  .measure-card-footer .primary-button{width:100%}
  .quick-panel,.content-card{padding:21px 17px;border-radius:15px}
  .lower-grid{padding-top:58px}
  .saved-item{align-items:flex-start;flex-direction:column}
  .saved-actions{width:100%;justify-content:flex-end}
  .footer{align-items:flex-start;flex-wrap:wrap;margin-top:65px}
  .footer .brand{width:100%}
  .modal{border-radius:13px}
  .modal-topline{padding-left:18px;padding-right:18px}
  .modal-heading{padding-left:18px;padding-right:18px}
  .modal-body{padding-left:18px;padding-right:18px}
  .modal-note{padding-left:18px;padding-right:18px}
}
.share-modal-backdrop{position:fixed;inset:0;z-index:7;display:grid;place-items:center;padding:20px;background:#14201cd9}
.share-modal-backdrop[hidden]{display:none}
.share-modal{width:min(520px,100%);padding:22px;border:1px solid #ffffff16;border-radius:16px;background:var(--surface);box-shadow:0 24px 70px #07130d66}
.share-modal-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:16px}
.share-modal-header h2{margin:7px 0 0;font-size:25px;letter-spacing:-.07em}
.share-modal-header .modal-close{position:static}
#shareCanvas{display:block;width:100%;height:auto;border-radius:9px;background:var(--ink);box-shadow:0 10px 25px #1833291c}
.share-modal-actions{display:flex;gap:10px;margin-top:16px}
.share-modal-actions button{flex:1}
.share-modal-actions .outline-button{margin-top:0;text-align:center}
@media(max-width:600px){.share-modal{padding:16px}.share-modal-actions{flex-direction:column}}
.live-view-banner{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:20px;padding:16px 19px;border:1px solid #c7ed5266;border-radius:10px;background:#e8f4c9}
.live-view-banner[hidden]{display:none}
.live-view-label{display:block;margin-bottom:5px;color:var(--accent-dark);font:500 9px 'DM Mono',monospace;letter-spacing:.14em}
.live-view-banner strong{display:block;font-size:13px}
.live-view-banner p{margin:4px 0 0;color:#627254;font-size:10px}
.live-banner-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.exit-live-btn{margin-top:0!important;padding:10px 14px;background:#fff;border-color:#b5c49a;color:#25332e;text-align:center;width:auto!important}
.exit-live-btn:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.is-live-view .measure-controls input,.is-live-view .measure-controls button,.is-live-view #saveBtn,.is-live-view .mode{cursor:not-allowed;opacity:.45;pointer-events:none}
@media(max-width:600px){.live-view-banner{align-items:stretch;flex-direction:column;gap:13px;margin-top:14px}.live-banner-actions{flex-direction:column;width:100%}.live-banner-actions .primary-button,.live-banner-actions .exit-live-btn{width:100%!important}}