:root {
  --bg: #0b1220;
  --bg-2: #0f1a2e;
  --surface: #14213a;
  --line: #22324f;
  --text: #e8edf5;
  --muted: #9aa8bd;
  --amber: #f5a524;
  --amber-2: #ffc457;
  --green: #3ddc97;
  --radius: 16px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, .6);
  --head: "Space Grotesk", "Inter", system-ui, sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  font: 16px/1.65 var(--body);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--amber-2); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--head); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.05rem; }
p { margin: 0 0 1em; }

.wrap { width: min(1180px, 100% - 40px); margin-inline: auto; }
.wrap.narrow { width: min(820px, 100% - 40px); }
.center { text-align: center; }
.eyebrow {
  font: 600 .78rem/1 var(--body);
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--amber);
  margin-bottom: 1rem;
}
.hl { color: var(--amber); }
.fine { font-size: .82rem; color: var(--muted); }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .9rem 1.4rem;
  border-radius: 999px;
  border: 0;
  background: linear-gradient(135deg, var(--amber), var(--amber-2));
  color: #1a1204;
  font: 600 1rem/1 var(--body);
  cursor: pointer;
  box-shadow: 0 10px 30px -10px rgba(245, 165, 36, .6);
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; box-shadow: 0 14px 34px -10px rgba(245, 165, 36, .75); }
.btn-ghost { background: transparent; color: var(--text); box-shadow: inset 0 0 0 1.5px var(--line); }
.btn-ghost:hover { box-shadow: inset 0 0 0 1.5px var(--amber); }
.btn-sm { padding: .6rem 1rem; font-size: .9rem; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 18, 32, .82);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid rgba(34, 50, 79, .6);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: .65rem; color: var(--text); font: 500 1.05rem/1 var(--head); }
.brand:hover { text-decoration: none; }
.brand b { font-weight: 700; color: var(--amber); }
.brand span { white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-links a { white-space: nowrap; }
.nav-links a:not(.btn) { color: var(--muted); font-weight: 500; font-size: .95rem; }
.nav-links a:not(.btn):hover { color: var(--text); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; border-radius: 2px; transition: .2s; }

/* hero */
.hero {
  position: relative;
  padding: clamp(48px, 7vw, 96px) 0 clamp(56px, 7vw, 100px);
  background:
    radial-gradient(900px 500px at 85% 10%, rgba(245, 165, 36, .14), transparent 60%),
    radial-gradient(700px 500px at 0% 100%, rgba(61, 220, 151, .08), transparent 60%),
    var(--bg);
  overflow: hidden;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.lead { font-size: 1.15rem; color: #c9d3e2; max-width: 38em; }
.lead strong { color: var(--text); }
.hero-cta { display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.8rem 0 2.4rem; }
.stat-strip { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.stat-strip li {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 14px 12px;
}
.stat-strip b { display: block; font: 700 1.9rem/1 var(--head); color: var(--text); }
.stat-strip small { font-size: .9rem; color: var(--amber); margin-left: 2px; }
.stat-strip span { display: block; margin-top: 6px; font-size: .78rem; color: var(--muted); line-height: 1.35; }

.hero-media { margin: 0; position: relative; }
.hero-media img {
  border-radius: 22px;
  box-shadow: var(--shadow), 0 0 0 1px var(--line);
  aspect-ratio: 3 / 4;
  object-fit: cover;
  width: 100%;
}
.hero-media figcaption {
  position: absolute; left: 16px; bottom: 16px;
  display: flex; align-items: center; gap: .5rem;
  background: rgba(11, 18, 32, .82);
  backdrop-filter: blur(8px);
  padding: .5rem .85rem; border-radius: 999px;
  font-size: .82rem; color: var(--text);
  border: 1px solid var(--line);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(61, 220, 151, .7); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(61, 220, 151, 0); } 100% { box-shadow: 0 0 0 0 rgba(61, 220, 151, 0); } }

/* band / props */
.band { background: var(--bg-2); border-block: 1px solid var(--line); padding: 56px 0; }
.props { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.props h3 { margin-top: .9rem; }
.props p { color: var(--muted); font-size: .95rem; margin: 0; }
.ico {
  width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center;
  background: rgba(245, 165, 36, .12);
  border: 1px solid rgba(245, 165, 36, .3);
}
.ico svg { width: 24px; height: 24px; fill: none; stroke: var(--amber); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* sections */
.section { padding: clamp(64px, 8vw, 112px) 0; }
.section.alt { background: var(--bg-2); border-block: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head p:not(.eyebrow) { color: var(--muted); font-size: 1.05rem; }

/* tour */
.tour { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(28px, 4vw, 56px); align-items: start; }
.tour-media { position: relative; border-radius: 20px; overflow: hidden; box-shadow: var(--shadow), 0 0 0 1px var(--line); position: sticky; top: 92px; }
.hotspot {
  position: absolute; transform: translate(-50%, -50%);
  width: 30px; height: 30px; border-radius: 50%;
  border: 2px solid #fff;
  background: var(--amber);
  color: #1a1204; font: 700 .85rem/1 var(--body);
  cursor: pointer;
  box-shadow: 0 0 0 0 rgba(245, 165, 36, .7), 0 4px 12px rgba(0, 0, 0, .45);
  animation: ping 2.4s infinite;
  transition: transform .15s, background .15s;
}
.hotspot:hover, .hotspot.on { transform: translate(-50%, -50%) scale(1.18); background: var(--green); animation: none; }
@keyframes ping { 70% { box-shadow: 0 0 0 12px rgba(245, 165, 36, 0), 0 4px 12px rgba(0, 0, 0, .45); } 100% { box-shadow: 0 0 0 0 rgba(245, 165, 36, 0), 0 4px 12px rgba(0, 0, 0, .45); } }
.tour-list { list-style: none; counter-reset: s; margin: 0; padding: 0; display: grid; gap: 10px; }
.tour-list li {
  counter-increment: s;
  position: relative;
  padding: 16px 18px 14px 62px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .15s;
}
.tour-list li::before {
  content: counter(s);
  position: absolute; left: 18px; top: 16px;
  width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(245, 165, 36, .14); color: var(--amber);
  font: 700 .85rem/1 var(--body);
}
.tour-list li h4 { margin-bottom: .25rem; }
.tour-list li p { margin: 0; color: var(--muted); font-size: .93rem; }
.tour-list li:hover, .tour-list li.on { border-color: rgba(61, 220, 151, .55); background: var(--surface); }
.tour-list li.on::before { background: var(--green); color: #05261a; }

/* flow diagram */
.flow { display: grid; grid-template-columns: 1fr 70px 1.3fr 70px 1fr; align-items: center; }
.flow-col { display: grid; gap: 18px; }
.flow-col.center { justify-items: center; }
.node {
  padding: 18px 20px; border-radius: 14px;
  background: var(--surface); border: 1px solid var(--line);
  text-align: center;
}
.node b { display: block; font-family: var(--head); font-size: 1.05rem; }
.node span { font-size: .85rem; color: var(--muted); }
.node-sun { border-color: rgba(245, 165, 36, .5); }
.node-gen { border-color: rgba(154, 168, 189, .45); }
.node-batt { border-color: rgba(61, 220, 151, .55); width: 100%; }
.node-home { border-color: rgba(255, 196, 87, .55); }
.cabinet {
  width: 100%;
  border-radius: 16px; padding: 18px;
  background: linear-gradient(180deg, #e9edf2, #cfd6df);
  color: #18233a;
  box-shadow: var(--shadow);
}
.cab-title { margin: 0 0 12px; text-align: center; font: 700 .95rem/1 var(--head); letter-spacing: .04em; text-transform: uppercase; }
.cab-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.cab-row i { font-style: normal; text-align: center; font-size: .82rem; font-weight: 600; background: #fff; border: 1px solid #b7c1ce; border-radius: 8px; padding: 10px 6px; }
.cab-row i.wide { grid-column: 1 / -1; }
.cab-bus { margin: 8px 0; text-align: center; font-weight: 700; font-size: .85rem; color: #05261a; background: var(--green); border-radius: 8px; padding: 8px; }
.flow-v { width: 3px; height: 34px; background: repeating-linear-gradient(180deg, var(--green) 0 6px, transparent 6px 12px); animation: flowv 1s linear infinite; background-size: 3px 12px; }
@keyframes flowv { to { background-position: 0 12px; } }
.flow-arrows { display: grid; gap: 70px; justify-items: center; }
.flow-arrows span {
  width: 100%; height: 3px;
  background: repeating-linear-gradient(90deg, var(--amber) 0 8px, transparent 8px 16px);
  background-size: 16px 3px;
  animation: flowh 1s linear infinite;
  position: relative;
}
.flow-arrows span::after { content: ""; position: absolute; right: -2px; top: -5px; border: 6.5px solid transparent; border-left: 9px solid var(--amber); border-right: 0; }
@keyframes flowh { to { background-position: 16px 0; } }

/* tesla */
.tesla-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(32px, 5vw, 64px); align-items: center; margin-bottom: 56px; }
.tesla-grid > div > p { color: #c9d3e2; }
.checks { list-style: none; padding: 0; margin: 1.5rem 0 0; display: grid; gap: 12px; }
.checks li { position: relative; padding-left: 34px; color: var(--muted); }
.checks li b { color: var(--text); }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 3px;
  width: 22px; height: 22px; border-radius: 50%;
  background: rgba(61, 220, 151, .14) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233ddc97' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5 9-10'/%3E%3C/svg%3E") center / 13px no-repeat;
}
.tesla-media { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.tesla-media .card-img:nth-child(2) { margin-top: 48px; }
.card-img { margin: 0; border-radius: 16px; overflow: hidden; background: var(--surface); border: 1px solid var(--line); }
.card-img img { aspect-ratio: 3 / 4; object-fit: cover; width: 100%; }
.card-img figcaption { padding: 10px 14px; font-size: .82rem; color: var(--muted); }

/* calculator */
.calc {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0;
  border-radius: 20px; overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-2);
}
.calc-in { padding: 32px; display: grid; gap: 18px; align-content: start; }
.calc-in label { display: grid; gap: 8px; font-weight: 600; font-size: .92rem; }
.calc-in .lbl { display: flex; justify-content: space-between; }
.calc-in label output { color: var(--amber); font-weight: 700; }
.calc-in select, .quote input, .quote select, .quote textarea {
  width: 100%;
  font: inherit; font-weight: 400;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .7rem .8rem;
}
.calc-in select:focus, .quote input:focus, .quote select:focus, .quote textarea:focus { outline: 2px solid rgba(245, 165, 36, .5); border-color: var(--amber); }
input[type=range] { width: 100%; accent-color: var(--amber); }
.calc-out {
  padding: 32px;
  background: linear-gradient(160deg, rgba(245, 165, 36, .12), rgba(61, 220, 151, .08));
  border-left: 1px solid var(--line);
  display: grid; gap: 14px; align-content: center;
}
.calc-out div { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding-bottom: 12px; border-bottom: 1px dashed var(--line); }
.calc-out div:last-child { border-bottom: 0; padding-bottom: 0; }
.calc-out span { color: var(--muted); font-size: .92rem; }
.calc-out b { font: 700 1.6rem/1 var(--head); color: var(--text); white-space: nowrap; }
.calc-out .muted-row b { color: #e07a5f; font-size: 1.25rem; }

/* battery interface screenshots */
.shot-row { display: grid; grid-template-columns: 1.35fr 1fr; gap: clamp(28px, 4vw, 56px); align-items: center; margin-bottom: clamp(48px, 6vw, 80px); }
.shot-row.flip .shot { order: 2; }
.shot {
  display: block; border-radius: 14px; overflow: hidden;
  background: #0d1117;
  border: 1px solid var(--line);
  box-shadow: var(--shadow), 0 0 60px -30px rgba(61, 220, 151, .35);
  transition: transform .2s ease;
}
.shot:hover { transform: translateY(-3px); text-decoration: none; }
.shot-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: #161b22; border-bottom: 1px solid #222a35; }
.shot-bar i { width: 10px; height: 10px; border-radius: 50%; background: #3a4352; }
.shot-bar i:first-child { background: #ff5f57; }
.shot-bar i:nth-child(2) { background: #febc2e; }
.shot-bar i:nth-child(3) { background: #28c840; }
.shot-bar em { margin-left: 10px; font-style: normal; font-size: .78rem; color: #8b96a8; }
.shot img { width: 100%; }
.shot-copy h3 { font-size: 1.5rem; }
.shot-copy > p { color: #c9d3e2; }
.shot-copy .checks { margin-top: 1rem; }
.mini-feats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.mini-feats div { padding: 22px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); }
.mini-feats p { margin: 0; color: var(--muted); font-size: .92rem; }

/* specs (light) */
.section.light { background: #f3f5f8; color: #18233a; }
.section.light .section-head p:not(.eyebrow) { color: #56637a; }
.section.light .eyebrow { color: #c47f0a; }
.section.light .fine { color: #6a778d; margin-top: 28px; }
.spec-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.spec-card { background: #fff; border-radius: 16px; padding: 24px 24px 18px; box-shadow: 0 1px 0 #e1e6ee, 0 10px 30px -18px rgba(24, 35, 58, .35); }
.spec-card h3 { font-size: 1.05rem; padding-bottom: 12px; margin-bottom: 4px; border-bottom: 2px solid #f5a524; display: inline-block; }
.spec-card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; }
.spec-card dt, .spec-card dd { padding: 9px 0; border-bottom: 1px solid #edf0f4; font-size: .9rem; }
.spec-card dt { color: #6a778d; padding-right: 14px; }
.spec-card dd { margin: 0; font-weight: 600; text-align: right; }
.spec-card dt:last-of-type, .spec-card dd:last-of-type { border-bottom: 0; }

/* gallery */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 210px; grid-auto-flow: dense; gap: 14px; }
.g-item {
  position: relative; padding: 0; border: 0; cursor: zoom-in;
  border-radius: 14px; overflow: hidden; background: var(--surface);
  grid-row: span 2;
}
.g-item.wide { grid-column: span 2; grid-row: span 2; }
.g-item.full { grid-column: 1 / -1; grid-row: span 2; }
.g-item picture, .g-item img { width: 100%; height: 100%; }
.g-item img { object-fit: cover; transition: transform .5s ease; }
.g-item:hover img { transform: scale(1.04); }
.g-cap {
  position: absolute; inset: auto 0 0 0;
  padding: 36px 14px 12px;
  background: linear-gradient(transparent, rgba(5, 9, 18, .85));
  color: #fff; font-size: .88rem; text-align: left;
}
.g-cap b { display: block; font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--amber-2); }

/* uses */
.uses { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.uses div { padding: 24px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); }
.uses p { color: var(--muted); margin: 0; font-size: .94rem; }

/* faq */
details { border-bottom: 1px solid var(--line); }
summary {
  list-style: none; cursor: pointer;
  padding: 20px 40px 20px 0; position: relative;
  font: 600 1.06rem/1.4 var(--head);
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  font: 400 1.6rem/1 var(--body); color: var(--amber); transition: transform .2s;
}
details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
details p { color: var(--muted); padding-bottom: 12px; }

/* contact */
.contact {
  background:
    radial-gradient(800px 400px at 100% 0%, rgba(245, 165, 36, .12), transparent 60%),
    var(--bg-2);
  border-top: 1px solid var(--line);
}
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(32px, 5vw, 64px); align-items: start; }
.contact-grid > div > p { color: #c9d3e2; }
.contact-points { list-style: none; padding: 0; margin: 1.6rem 0 0; display: grid; gap: 10px; }
.contact-points li { display: flex; gap: 14px; }
.contact-points span { width: 54px; color: var(--muted); font-size: .9rem; }
.quote { background: var(--bg); border: 1px solid var(--line); border-radius: 20px; padding: 28px; display: grid; gap: 16px; box-shadow: var(--shadow); }
.quote .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.quote label { display: grid; gap: 6px; font-size: .88rem; font-weight: 600; color: #c9d3e2; }
.quote textarea { resize: vertical; }
.quote .btn { justify-self: start; }
.form-note { margin: 0; font-size: .9rem; color: var(--green); min-height: 1.2em; }
.form-note.err { color: #ff8a7a; }
.quote .invalid { border-color: #ff8a7a; }

/* footer */
.footer { border-top: 1px solid var(--line); padding: 32px 0; background: var(--bg); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer p { margin: 0; color: var(--muted); font-size: .8rem; max-width: 640px; text-align: right; }

/* lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(4, 8, 16, .94);
  display: grid; place-items: center;
  padding: 40px 72px;
}
.lightbox[hidden] { display: none; }
.lightbox figure { margin: 0; max-width: 100%; max-height: 100%; display: grid; gap: 12px; justify-items: center; }
.lightbox img { max-height: calc(100vh - 140px); width: auto; border-radius: 10px; }
.lightbox figcaption { color: #c9d3e2; font-size: .95rem; text-align: center; max-width: 640px; }
.lightbox button { position: absolute; background: rgba(255, 255, 255, .08); color: #fff; border: 0; cursor: pointer; border-radius: 50%; width: 48px; height: 48px; font-size: 2rem; line-height: 1; }
.lightbox button:hover { background: rgba(255, 255, 255, .18); }
.lb-close { top: 18px; right: 18px; }
.lb-prev { left: 14px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 14px; top: 50%; transform: translateY(-50%); }

/* reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  .hotspot, .dot, .flow-v, .flow-arrows span { animation: none; }
}

/* responsive */
@media (max-width: 1240px) {
  .nav-links { gap: 1.1rem; }
  .nav-links a:not(.btn) { font-size: .9rem; }
}
@media (max-width: 1060px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 8px 20px 20px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: .95rem; }
  .nav-links .btn { margin-top: 14px; justify-content: center; }
}
@media (max-width: 1020px) {
  .props { grid-template-columns: repeat(2, 1fr); }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
  .mini-feats { grid-template-columns: repeat(2, 1fr); }
  .shot-row { grid-template-columns: 1fr; }
  .shot-row.flip .shot { order: 0; }
  .gallery { grid-template-columns: repeat(3, 1fr); }
  .flow { grid-template-columns: 1fr; gap: 16px; }
  .flow-arrows { display: none; }
  .flow-col:first-child { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .hero-grid, .tour, .tesla-grid, .contact-grid, .calc { grid-template-columns: 1fr; }
  .hero-media { max-width: 460px; }
  .stat-strip { grid-template-columns: repeat(2, 1fr); }
  .tour-media { position: relative; top: 0; max-width: 520px; }
  .calc-out { border-left: 0; border-top: 1px solid var(--line); }
  .uses { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer p { text-align: center; }
}
@media (max-width: 560px) {
  .props, .spec-grid, .uses, .mini-feats { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 160px; }
  .g-item.wide { grid-column: span 2; }
  .quote .row { grid-template-columns: 1fr; }
  .lightbox { padding: 20px 8px 80px; }
  .lb-prev, .lb-next { top: auto; bottom: 16px; transform: none; }
  .lb-prev { left: calc(50% - 60px); }
  .lb-next { right: calc(50% - 60px); }
  .calc-in, .calc-out { padding: 22px; }
}