:root{color-scheme:dark;--bg: #121212;--bg-elevated: #1b1b1b;--bg-panel: #202020;--bg-panel-soft: #272727;--text: #f1ede4;--muted: #b7b0a4;--muted-strong: #d4ccbe;--amber: #e4b15e;--amber-soft: rgba(228, 177, 94, .18);--amber-strong: #f2c981;--line: rgba(255, 255, 255, .08);--danger: #ff8f7a;--success: #9adf9d;--shadow: 0 24px 80px rgba(0, 0, 0, .44);--radius-xl: 28px;--radius-lg: 20px;--radius-md: 14px;--radius-sm: 10px;--font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;--font-body: var(--font-mono);--max-width: 1100px}*{box-sizing:border-box}html{min-height:100%;background:radial-gradient(circle at top left,rgba(228,177,94,.12),transparent 28%),radial-gradient(circle at 80% 20%,rgba(255,255,255,.06),transparent 20%),linear-gradient(180deg,#171717,#111)}body{margin:0;min-height:100vh;min-height:100svh;color:var(--text);font-family:var(--font-body);letter-spacing:.01em;background:linear-gradient(180deg,rgba(255,255,255,.015),transparent 32%),radial-gradient(circle at top center,rgba(228,177,94,.12),transparent 30%),linear-gradient(180deg,#171717,#101010)}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.45),transparent 84%);mask-image:linear-gradient(180deg,rgba(0,0,0,.45),transparent 84%);opacity:.6}body:after{content:"";position:fixed;inset:auto 0 0 0;height:180px;pointer-events:none;background:linear-gradient(180deg,transparent,rgba(0,0,0,.34))}button,input,select{font:inherit}button{border:0;background:none;color:inherit}a{color:inherit;text-decoration:none}img,svg,canvas{display:block;max-width:100%}.mono{font-family:var(--font-mono)}.shell{position:relative;z-index:1;width:min(var(--max-width),calc(100% - 32px));margin:0 auto}.page{min-height:100svh;padding:16px 0 20px}.surface{background:linear-gradient(180deg,#ffffff0a,#ffffff05),var(--bg-panel);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.panel{background:linear-gradient(180deg,#ffffff09,#ffffff04),var(--bg-elevated);border:1px solid var(--line);border-radius:var(--radius-lg)}.stack{display:grid;gap:14px}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.space-between{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}.kicker{text-transform:uppercase;letter-spacing:.2em;font-size:.74rem;color:var(--amber-strong)}h1,h2,h3,p{margin:0}h1{font-size:clamp(2rem,5vw,4rem);line-height:.95;letter-spacing:-.05em}h2{font-size:clamp(1.25rem,3vw,2rem);line-height:1.05;letter-spacing:-.04em}p{color:var(--muted);line-height:1.55}.small{font-size:.92rem}.micro{font-size:.8rem}.badge,.chip,.button,input[type=range],input[type=number]{border-radius:999px}.badge,.chip{display:inline-flex;align-items:center;gap:8px;padding:.55rem .85rem;background:#ffffff0a;border:1px solid var(--line);color:var(--muted-strong)}.button,.button-ghost{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:.9rem 1.15rem;cursor:pointer;transition:transform .14s ease,background-color .14s ease,border-color .14s ease,color .14s ease}.button{background:linear-gradient(180deg,#f2c98133,#e4b15e1f);color:var(--text);border:1px solid rgba(242,201,129,.28)}.button:hover,.button-ghost:hover{transform:translateY(-1px)}.button:focus-visible,.button-ghost:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--amber);outline-offset:2px}.button-ghost{background:#ffffff08;color:var(--muted-strong);border:1px solid var(--line)}input[type=number],select{min-height:48px;padding:.8rem 1rem;background:#ffffff08;border:1px solid var(--line);color:var(--text)}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;background:transparent}input[type=range]::-webkit-slider-runnable-track{height:8px;border-radius:999px;background:linear-gradient(90deg,#e4b15ed9,#e4b15e33)}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:24px;height:24px;margin-top:-8px;border-radius:50%;background:linear-gradient(180deg,#fff2d5,var(--amber));border:1px solid rgba(0,0,0,.36);box-shadow:0 10px 22px #00000059}input[type=range]::-moz-range-track{height:8px;border-radius:999px;background:linear-gradient(90deg,#e4b15ed9,#e4b15e33)}input[type=range]::-moz-range-thumb{width:24px;height:24px;border:0;border-radius:50%;background:linear-gradient(180deg,#fff2d5,var(--amber))}.hero{display:grid;gap:22px;padding:28px 18px}.hero-copy{display:grid;gap:14px;max-width:42rem}.hero-grid{display:grid;gap:16px}.hero-card{padding:18px}.tool-page{display:grid;gap:14px;min-height:100svh;padding:12px}.tool-header{display:grid;gap:10px}.tool-sticky{position:sticky;top:0;z-index:2}.tool-stage{position:relative;min-height:calc(100svh - 24px);overflow:hidden}.calibration-stage{display:grid;gap:18px;align-content:start}.calibration-visual{position:relative;min-height:34svh;display:grid;place-items:center;padding:18px}.calibration-stage-graphic{width:min(100%,560px);display:grid;gap:12px;justify-items:center}.calibration-frame{position:relative;width:100%;min-height:240px;display:grid;place-items:center;padding:24px;border-radius:24px;background:radial-gradient(circle at top left,rgba(242,201,129,.12),transparent 35%),radial-gradient(circle at bottom right,rgba(255,255,255,.05),transparent 30%),linear-gradient(180deg,#ffffff09,#ffffff03);border:1px solid rgba(242,201,129,.2);overflow:hidden}.calibration-frame:before{content:"";position:absolute;top:12px;right:12px;bottom:12px;left:12px;border-radius:18px;border:1px dashed rgba(228,177,94,.18);pointer-events:none}.calibration-frame__caption{color:var(--amber-strong);text-align:center;font-size:.78rem;letter-spacing:.16em;text-transform:uppercase}.calibration-card{position:relative;border-radius:16px;background:linear-gradient(180deg,#ffffff0f,#ffffff04),radial-gradient(circle at 30% 20%,rgba(242,201,129,.2),transparent 38%),linear-gradient(135deg,#342f28,#1f1c18 55%,#27231d);border:1px solid rgba(242,201,129,.4);box-shadow:inset 0 0 0 1px #0003,0 18px 42px #0000006b;overflow:hidden}.calibration-card:before{content:"";position:absolute;top:10px;right:10px;bottom:10px;left:10px;border-radius:12px;border:1px dashed rgba(242,201,129,.45)}.calibration-card:after{content:"";position:absolute;inset:auto 0 0 0;height:22%;background:linear-gradient(180deg,transparent,rgba(0,0,0,.16));pointer-events:none}.calibration-card__stripe{position:absolute;top:14%;left:0;right:0;height:20%;background:linear-gradient(90deg,#ffffff05,#f2c98114,#ffffff05);opacity:.8}.calibration-card__chip{position:absolute;left:14%;top:32%;width:18%;aspect-ratio:1.28;border-radius:10px;background:linear-gradient(180deg,#fff4dce6,#e4b15eb8),linear-gradient(90deg,rgba(0,0,0,.08) 1px,transparent 1px);box-shadow:inset 0 0 0 1px #0003}.calibration-card__chip:before,.calibration-card__chip:after{content:"";position:absolute;top:18%;right:18%;bottom:18%;left:18%;border-radius:6px;border:1px solid rgba(79,58,24,.28)}.calibration-card__chip:after{top:34%;right:10%;bottom:34%;left:10%}.calibration-card__contactless{position:absolute;right:14%;top:31%;width:18%;aspect-ratio:1;border-radius:50%;border:1.5px solid rgba(242,201,129,.8);box-shadow:0 0 0 1px #00000038 inset}.calibration-card__contactless:before,.calibration-card__contactless:after{content:"";position:absolute;top:17%;right:17%;bottom:17%;left:17%;border-radius:50%;border:1.5px solid rgba(242,201,129,.62)}.calibration-card__contactless:after{top:34%;right:34%;bottom:34%;left:34%}.calibration-card__brand{position:absolute;left:14%;bottom:24%;color:var(--amber-strong);font-size:.8rem;letter-spacing:.24em;text-transform:uppercase}.calibration-card__pan{position:absolute;left:14%;bottom:16%;color:#f1ede4e0;font-size:.95rem;letter-spacing:.24em}.calibration-card__label{position:absolute;left:14px;bottom:14px;padding:.45rem .7rem;border-radius:999px;background:#00000061;color:var(--amber-strong);font-size:.82rem}.calibration-readout{display:grid;gap:8px}.callout{padding:14px 16px;border-radius:var(--radius-md);background:#e4b15e1a;border:1px solid rgba(228,177,94,.22);color:var(--muted-strong)}.callout--warn{background:#ff8f7a1a;border-color:#ff8f7a38}.callout--success{background:#9adf9d1a;border-color:#9adf9d38}.divider{height:1px;background:var(--line)}.ruler-shell{position:relative;min-height:100svh;overflow:hidden}.ruler-surface{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,#ffffff08,#ffffff01),#151515}.ruler-surface:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(rgba(228,177,94,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(228,177,94,.06) 1px,transparent 1px);background-size:24px 24px;opacity:.28;pointer-events:none}.ruler-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:grid}.ruler-overlay[data-orientation=horizontal]{grid-template-rows:auto 1fr}.ruler-overlay[data-orientation=vertical]{grid-template-columns:auto 1fr}.ruler-track{position:relative;overflow:hidden;border-bottom:1px solid rgba(228,177,94,.3);border-right:1px solid rgba(228,177,94,.3);background:linear-gradient(180deg,#ffffff09,#ffffff02);touch-action:none}.ruler-track canvas{width:100%;height:100%}.ruler-hud{position:absolute;z-index:3;display:grid;gap:10px;padding:14px}.ruler-hud--top{top:0;left:0;right:0}.ruler-hud--side{top:0;left:0;bottom:0;width:min(26vw,190px)}.ruler-hud .panel{padding:12px}.marker-line{position:absolute;inset:0 auto 0 0;width:2px;background:linear-gradient(180deg,transparent,var(--amber-strong),transparent);box-shadow:0 0 0 1px #00000073;cursor:ew-resize;touch-action:none}.marker-line[data-axis=vertical]{inset:auto 0 0 0;width:auto;height:2px;cursor:ns-resize}.marker-handle{position:absolute;width:18px;height:18px;border-radius:50%;background:linear-gradient(180deg,#fff4dd,var(--amber));border:1px solid rgba(0,0,0,.42);box-shadow:0 8px 16px #0000004d;transform:translate(-50%,-50%)}.marker-handle:after{content:"";position:absolute;top:-10px;right:-10px;bottom:-10px;left:-10px}.placeholder-page{display:grid;min-height:100svh;align-content:center;padding:32px 0}.placeholder-card{padding:20px}.link-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.link-card{padding:16px;border-radius:var(--radius-md);border:1px solid var(--line);background:#ffffff08}body.ruler-page{overflow:hidden;overscroll-behavior:none;touch-action:none}.ruler-shell{position:relative;width:100vw;height:100svh;height:100dvh;overflow:hidden;background:#151515}.ruler-stage{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;background:#151515;user-select:none;-webkit-user-select:none;touch-action:none;overscroll-behavior:none}.ruler-stage:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,rgba(255,255,255,.02),transparent 26%);pointer-events:none}.ruler-stage[data-orientation=horizontal]:after{content:"";position:absolute;left:0;right:0;top:0;height:var(--ruler-band-size, 72px);background:linear-gradient(180deg,#e4b15e1a,#e4b15e05);pointer-events:none}.ruler-stage[data-orientation=vertical]:after{content:"";position:absolute;top:0;bottom:0;left:0;width:var(--ruler-band-size, 72px);background:linear-gradient(90deg,#e4b15e1a,#e4b15e05);pointer-events:none}.ruler-canvas{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;display:block}.ruler-marker{position:absolute;display:grid;place-items:center;padding:0;border:0;background:transparent;cursor:grab;touch-action:none;z-index:2}.ruler-marker:active{cursor:grabbing}.ruler-marker__core{position:relative;display:block;width:6px;height:100%;border-radius:999px;background:linear-gradient(180deg,transparent,var(--amber-strong),transparent);box-shadow:0 0 0 1px #00000073}.ruler-marker__core:before{content:"";position:absolute;inset:50% auto auto 50%;width:44px;height:44px;transform:translate(-50%,-50%)}.ruler-marker[data-orientation=vertical] .ruler-marker__core{width:100%;height:6px}.ruler-marker[data-orientation=vertical] .ruler-marker__core:before{width:44px;height:44px}.ruler-pill{position:absolute;right:max(12px,env(safe-area-inset-right));bottom:max(12px,env(safe-area-inset-bottom));z-index:3;display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:999px;background:#181818e0;border:1px solid rgba(255,255,255,.1);box-shadow:0 18px 48px #00000061;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);transition:opacity .18s ease,transform .18s ease}.ruler-pill--hidden{opacity:0;transform:translateY(6px);pointer-events:none}.ruler-pill__button{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#ffffff0a;border:1px solid rgba(255,255,255,.1);color:var(--text)}.ruler-pill__dot{width:10px;height:10px;border-radius:50%;background:var(--danger);box-shadow:0 0 0 3px #ffffff0a}.ruler-pill__dot[data-state=ready]{background:var(--success)}.ruler-pill__dot[data-state=stale]{background:var(--danger)}.ruler-pill__dot[data-state=missing]{background:#8a8a8a}.ruler-pill__scale{color:var(--muted-strong);font-size:.78rem;white-space:nowrap}.ruler-gate{position:absolute;top:0;right:0;bottom:0;left:0;z-index:4;display:grid;place-items:center;padding:20px;background:#0a0a0aeb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.ruler-gate__card{display:grid;gap:14px;justify-items:center;width:min(28rem,100%);padding:22px;text-align:center;border-radius:var(--radius-xl);background:linear-gradient(180deg,#ffffff0a,#ffffff05);border:1px solid var(--line);box-shadow:var(--shadow)}.ruler-gate__text{color:var(--text);font-size:1rem;line-height:1.5}.ruler-seo{position:absolute;top:100svh;left:0;right:0;padding:24px 16px 40px}.ruler-seo h1{font-size:1.2rem}.ruler-seo p{max-width:48rem}@media (min-width: 760px){.hero{grid-template-columns:1.25fr .75fr;align-items:start;padding:44px 28px}.tool-page{padding:18px}.hero-card{padding:22px}.calibration-stage{grid-template-columns:1fr .95fr;align-items:start}.calibration-visual{min-height:56svh}}