:root {
  --ink: #0f2a2e;
  --ink-soft: #3d5559;
  --paper: #f3efe6;
  --card: #fbf9f4;
  --line: #d9d3c4;
  --water: #1d7a8c;
  --signal: #d9532b;
  --ok: #2b7a45;
  --bad: #b33a2a;
  --serif: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --sans: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: Consolas, "Courier New", monospace;
  --w: 1120px;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 400 17px/1.6 var(--sans); color: var(--ink); background: var(--paper); }
img, svg { max-width: 100%; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.12; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.02em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
.wrap { width: min(var(--w), 100% - 40px); margin-inline: auto; }
.mono { font-family: var(--mono); font-size: .8rem; letter-spacing: .04em; color: var(--ink-soft); }
.kicker { font: 500 .78rem/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--signal); margin-bottom: 1rem; }
.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 60ch; }

/* buttons */
.btn { display: inline-block; background: var(--ink); color: #fff; text-decoration: none; border: 2px solid var(--ink); padding: .8em 1.4em; font: 700 .95rem var(--sans); cursor: pointer; border-radius: 2px; transition: background .15s, color .15s; }
.btn:hover { background: var(--signal); border-color: var(--signal); }
.btn.ghost { background: transparent; color: var(--ink); margin-left: .5rem; }
.btn.ghost:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.textlink { font-weight: 700; text-decoration: none; border-bottom: 2px solid var(--signal); }
.linklike { background: none; border: 0; padding: 0; font: inherit; font-family: var(--mono); font-size: .85rem; color: var(--water); text-decoration: underline; cursor: pointer; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; }

/* header */
.site-header { background: var(--paper); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; }
.bar { display: flex; align-items: center; justify-content: space-between; min-height: 68px; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .5rem; text-decoration: none; color: var(--water); font: 600 1.45rem var(--serif); }
.brand span { color: var(--ink); }
.brand b { font-weight: 700; color: var(--water); }
.nav { display: flex; gap: 1.6rem; }
.nav a { text-decoration: none; font-weight: 500; font-size: .95rem; padding: .3rem 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a.on { border-bottom-color: var(--signal); }
.nav-toggle { display: none; background: none; border: 1.5px solid var(--ink); padding: .4rem .9rem; font: 500 .9rem var(--sans); color: var(--ink); cursor: pointer; }

/* slider */
.slider { position: relative; color: #fff; overflow: hidden; display: grid; }
.slide { grid-area: 1 / 1; opacity: 0; visibility: hidden; transition: opacity .5s, visibility .5s; padding: 64px 0 96px; }
.slide.active { opacity: 1; visibility: visible; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.s1 { background: #0f2a2e; }
.s2 { background: #17404a; }
.s3 { background: #243a2c; }
.slide-in { display: grid; grid-template-columns: 1.3fr .7fr; gap: 3rem; align-items: center; }
.slide-text h1 { max-width: 16ch; }
.slide-text p { color: #c9d8d8; max-width: 46ch; font-size: 1.1rem; }
.slide .kicker { color: #f0a58a; }
.slide .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.slide .btn:hover { background: var(--signal); color: #fff; border-color: var(--signal); }
.slide-art { display: flex; justify-content: center; }
.slide-art .cartridge { height: 330px; width: auto; transform: rotate(7deg); filter: drop-shadow(0 20px 0 rgba(0,0,0,.18)); }
.slider-ctl { position: absolute; left: 0; right: 0; bottom: 26px; display: flex; align-items: center; gap: 1rem; margin-inline: auto; }
.slider-ctl > button { background: none; border: 1.5px solid #fff8; color: #fff; width: 40px; height: 40px; cursor: pointer; font-size: 1.1rem; }
.slider-ctl > button:hover { background: #fff2; }
.dots { display: flex; gap: .5rem; }
.dots button { width: 28px; height: 4px; background: #fff5; border: 0; padding: 0; cursor: pointer; }
.dots button.on { background: #fff; }

/* icon row */
.icons { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
.icons > div { padding: 2.2rem 1.4rem 2rem 0; }
.icons > div + div { padding-left: 1.4rem; border-left: 1px solid var(--line); }
.ico { width: 40px; height: 40px; color: var(--water); margin-bottom: .8rem; }
.icons h3 { margin-bottom: .2rem; }
.icons p { margin: 0; font-size: .95rem; color: var(--ink-soft); }

/* check band */
.check { background: var(--ink); color: #fff; }
.check-in { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; padding: 4rem 0; align-items: center; }
.check p { color: #c9d8d8; }
.check .kicker { color: #f0a58a; }
.check-form label { display: block; font: 500 .78rem var(--mono); letter-spacing: .1em; text-transform: uppercase; margin-bottom: .5rem; }
.check-form .row { display: flex; }
.check-form input { flex: 1; min-width: 0; font: 500 1.05rem var(--mono); letter-spacing: .06em; padding: .85rem 1rem; border: 2px solid var(--paper); background: #fff; color: var(--ink); border-radius: 2px 0 0 2px; text-transform: uppercase; }
.check-form .btn { border-radius: 0 2px 2px 0; background: var(--signal); border-color: var(--signal); }
.check-form .btn:hover { background: #fff; color: var(--ink); border-color: #fff; }
.check-form .hint { margin: .7rem 0 0; font-size: .9rem; color: #aebfbf; }
.check .linklike { color: #7fd0de; }

/* feature */
.feature { display: grid; grid-template-columns: .8fr 1.2fr; gap: 4rem; align-items: center; padding: 5rem 0; }
.feature-art { background: var(--card); border: 1px solid var(--line); padding: 2.5rem; display: flex; justify-content: center; }
.feature-art .cartridge { height: 320px; width: auto; }
.ticks { list-style: none; padding: 0; margin: 0 0 1.6rem; }
.ticks li { padding: .45rem 0 .45rem 1.6rem; border-bottom: 1px solid var(--line); position: relative; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 1.05em; width: 10px; height: 10px; background: var(--water); }

/* about band */
.about-band { background: var(--card); border-top: 1px solid var(--line); }
.about-in { display: grid; grid-template-columns: .8fr 1.2fr; gap: 4rem; padding: 4.5rem 0; }
.about-in h2 { max-width: 12ch; }

/* inner pages */
.page-head { padding: 3.5rem 0 2rem; }
.page-head h1 { max-width: 20ch; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; padding-bottom: 5rem; }
.card { background: var(--card); border: 1px solid var(--line); text-decoration: none; display: flex; flex-direction: column; transition: transform .15s, border-color .15s; }
.card:hover { transform: translateY(-3px); border-color: var(--ink); }
.card-art { background: color-mix(in srgb, var(--tint) 12%, var(--paper)); padding: 1.6rem; display: flex; justify-content: center; border-bottom: 1px solid var(--line); }
.card-art .cartridge { height: 190px; width: auto; }
.card-body { padding: 1.2rem 1.3rem 1.4rem; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { margin: .3rem 0 .5rem; }
.card-body p { font-size: .95rem; color: var(--ink-soft); flex: 1; }
.crumbs { padding-top: 1.6rem; font-size: .85rem; color: var(--ink-soft); }
.crumbs a { text-decoration: none; border-bottom: 1px solid var(--line); }
.detail { display: grid; grid-template-columns: .85fr 1.15fr; gap: 4rem; padding: 2rem 0 4rem; align-items: start; }
.detail-art { background: color-mix(in srgb, var(--tint) 12%, var(--paper)); border: 1px solid var(--line); padding: 3rem; display: flex; justify-content: center; }
.detail-art .cartridge { height: 380px; width: auto; }
.specs { display: grid; grid-template-columns: 11rem 1fr; margin: 1.5rem 0; border-top: 1px solid var(--line); }
.specs dt, .specs dd { margin: 0; padding: .7rem 0; border-bottom: 1px solid var(--line); }
.specs dt { font: 500 .78rem var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); padding-top: .95rem; }
.specs ul { margin: 0; padding-left: 1.1rem; }
.note { font-size: .9rem; color: var(--ink-soft); }
.more { padding-bottom: 5rem; }
.mini { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 1rem; }
.mini a { border: 1px solid var(--line); background: var(--card); padding: 1rem; text-decoration: none; font-size: .9rem; color: var(--ink-soft); }
.mini a:hover { border-color: var(--ink); }
.mini .mono { display: block; color: var(--ink); margin-bottom: .3rem; }

.prose-grid { display: grid; grid-template-columns: 1.4fr .6fr; gap: 4rem; padding-bottom: 5rem; }
.prose { max-width: 62ch; }
.prose h2 { margin-top: 2rem; }
.facts dl { margin: 0; border-top: 2px solid var(--ink); }
.facts dt { font: 500 .75rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); padding-top: .9rem; }
.facts dd { margin: 0; padding: .2rem 0 .9rem; border-bottom: 1px solid var(--line); }

/* verify */
.verify { padding-bottom: 5rem; }
.verify > * { max-width: 760px; }
.verify .check-form input { border-color: var(--ink); }
.verify .check-form label { color: var(--ink-soft); }
.verify .check-form .btn { background: var(--ink); border-color: var(--ink); }
.verify .check-form .btn:hover { background: var(--signal); border-color: var(--signal); color: #fff; }
.result { display: flex; gap: 2rem; margin-top: 2.5rem; padding: 2rem; background: var(--card); border: 1px solid var(--line); border-left: 6px solid var(--ok); }
.result.bad { border-left-color: var(--bad); }
.result-art { background: color-mix(in srgb, var(--tint) 12%, var(--paper)); padding: 1rem 1.5rem; align-self: flex-start; }
.result-art .cartridge { height: 160px; width: auto; }
.result .specs { grid-template-columns: 9rem 1fr; }
.badge { display: inline-block; font: 500 .75rem var(--mono); letter-spacing: .12em; text-transform: uppercase; padding: .25rem .6rem; color: #fff; margin-bottom: .8rem; }
.badge.ok { background: var(--ok); }
.badge.bad { background: var(--bad); }

/* contact */
.contact { display: grid; grid-template-columns: 1.3fr .7fr; gap: 4rem; padding-bottom: 5rem; }
.form label { display: block; font: 500 .78rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 1.1rem; }
.form input, .form textarea { display: block; width: 100%; margin-top: .4rem; font: 400 1rem var(--sans); padding: .8rem 1rem; border: 1.5px solid var(--ink); background: #fff; border-radius: 2px; color: var(--ink); text-transform: none; letter-spacing: 0; }
.hp { position: absolute; left: -9999px; }
.alert { padding: .8rem 1rem; margin: 0 0 1rem; border-left: 4px solid; background: var(--card); }
.alert.ok { border-color: var(--ok); }
.alert.bad { border-color: var(--bad); }

/* footer */
.site-footer { background: var(--ink); color: #c9d8d8; margin-top: 0; }
.site-footer .brand, .site-footer .brand span { color: #fff; }
.site-footer .brand b { color: #7fd0de; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.4fr; gap: 2.5rem; padding: 3.5rem 0 2.5rem; }
.site-footer h4 { font: 500 .75rem var(--mono); letter-spacing: .14em; text-transform: uppercase; color: #fff; margin-bottom: 1rem; }
.site-footer a:not(.brand) { display: block; text-decoration: none; padding: .15rem 0; font-size: .95rem; }
.site-footer a:not(.brand):hover { color: #fff; text-decoration: underline; }
.foot-note { font-size: .85rem; color: #93a8a8; margin-top: .8rem; }
.legal { border-top: 1px solid #ffffff22; padding: 1.2rem 0 2rem; font-size: .85rem; color: #93a8a8; }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--paper); flex-direction: column; gap: 0; padding: .5rem 20px 1rem; border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .nav a { padding: .8rem 0; border-bottom: 1px solid var(--line); }
  .slide { padding: 40px 0 90px; }
  .slide-in, .check-in, .feature, .about-in, .detail, .prose-grid, .contact { grid-template-columns: 1fr; gap: 2rem; }
  .slide-art { order: -1; }
  .slide-art .cartridge { height: 190px; }
  .icons { grid-template-columns: 1fr 1fr; }
  .icons > div:nth-child(3) { border-left: 0; padding-left: 0; }
  .icons > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .grid { grid-template-columns: 1fr 1fr; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .feature, .about-in { padding: 3rem 0; }

}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .specs, .result .specs { grid-template-columns: 1fr; }
  .specs dt { border-bottom: 0; padding-bottom: 0; }
  .result { flex-direction: column; }
  .btn.ghost { margin-left: 0; margin-top: .5rem; }
  .check-form .row { flex-direction: column; }
  .check-form input, .check-form .btn { border-radius: 2px; }
  .check-form .btn { margin-top: .5rem; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }