/* Home page: scroll-build, speed band, plan families. Loaded after site.css on index.html and plans.html. */

/* ---------- intro ---------- */
.intro { position: relative; min-height: calc(100svh - 68px); display: grid; align-items: end; padding: 0 0 clamp(48px, 9vh, 96px); background: radial-gradient(120% 80% at 70% 30%, #23272b 0%, #121416 60%, #0d0d0d 100%); overflow: hidden; }
.intro__grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(240,128,43,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(240,128,43,.07) 1px, transparent 1px); background-size: 48px 48px; -webkit-mask-image: radial-gradient(70% 60% at 65% 40%, #000 0%, transparent 75%); mask-image: radial-gradient(70% 60% at 65% 40%, #000 0%, transparent 75%); }
.intro .container { position: relative; }
.intro h1 { font-size: clamp(3rem, 9vw, 7.4rem); line-height: .95; letter-spacing: -0.035em; margin: 0 0 .25em; }
.intro h1 em { font-style: normal; color: var(--accent); }
.intro__sub { font-size: clamp(1.1rem, 2vw, 1.45rem); color: var(--text); max-width: 34em; margin: 0 0 1.6rem; }
.intro__stats { display: flex; flex-wrap: wrap; gap: 28px 44px; margin: 0 0 2rem; padding: 0; list-style: none; }
.intro__stats strong { display: block; font-family: var(--font-display); font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 600; letter-spacing: -0.02em; }
.intro__stats span { color: var(--muted); font-size: .9rem; }
.scroll-cue { display: inline-flex; align-items: center; gap: 10px; margin-top: 2.2rem; color: var(--muted); font-size: .82rem; letter-spacing: .16em; text-transform: uppercase; }
.scroll-cue i { width: 1px; height: 38px; background: linear-gradient(var(--accent), transparent); animation: cue 1.8s ease-in-out infinite; transform-origin: top; }
@keyframes cue { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* ---------- scroll-build ---------- */
.build { position: relative; background: #16181a; }
.build__stage { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
.build__stage canvas { width: 100%; height: 100%; display: block; }
.build__photo { position: absolute; inset: 0; margin: 0; opacity: 0; pointer-events: none; }
.build__photo img { width: 100%; height: 100%; object-fit: cover; }
.build__photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,12,16,.7) 0%, rgba(10,12,16,.05) 55%); }
.build__photo figcaption { position: absolute; right: 20px; bottom: 16px; z-index: 1; font-size: .78rem; color: rgba(255,255,255,.75); }

.build__steps { position: relative; z-index: 2; margin-top: -100vh; margin-top: -100svh; }
.bstep { min-height: 100vh; min-height: 100svh; display: flex; align-items: center; pointer-events: none; }
.bstep:last-child { min-height: 130vh; }
.bstep__card { pointer-events: auto; max-width: 430px; margin-left: max(var(--gutter), calc((100vw - var(--container)) / 2 + var(--gutter))); padding: 28px 28px 26px; background: rgba(13,13,13,.72); -webkit-backdrop-filter: blur(14px) saturate(1.2); backdrop-filter: blur(14px) saturate(1.2); border: 1px solid var(--line); border-radius: 10px; opacity: .25; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.bstep.is-active .bstep__card, .build:not(.has-webgl) .bstep__card { opacity: 1; transform: none; }
.bstep__no { font-family: var(--font-mono); font-size: .78rem; color: var(--accent); letter-spacing: .08em; display: block; margin-bottom: 10px; }
.bstep__term { font-family: var(--font-display); text-transform: uppercase; letter-spacing: .2em; font-size: .78rem; color: var(--muted); display: block; margin-bottom: 6px; }
.bstep h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); margin: 0 0 .5rem; }
.bstep p { margin: 0 0 .8rem; color: #d9d4ca; }
.bstep p:last-child { margin-bottom: 0; }
.bstep__fast { display: inline-flex; gap: 8px; align-items: center; font-family: var(--font-mono); font-size: .8rem; color: var(--accent); border: 1px solid rgba(240,128,43,.4); border-radius: 999px; padding: 4px 12px; }

.rail { position: absolute; right: 28px; top: 50%; transform: translateY(-50%); z-index: 3; list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.rail li { display: grid; grid-template-columns: 1fr 26px; align-items: center; gap: 12px; font-family: var(--font-display); font-size: .72rem; letter-spacing: .18em; text-transform: uppercase; color: rgba(255,255,255,.38); text-align: right; transition: color .3s; }
.rail li::after { content: ""; height: 2px; background: linear-gradient(90deg, var(--accent) calc(var(--fill, 0) * 100%), rgba(255,255,255,.18) 0); border-radius: 2px; }
.rail li.is-active { color: #fff; }
.rail li.is-done { color: rgba(255,255,255,.7); }

.callout { position: absolute; left: 0; top: 0; z-index: 2; pointer-events: none; opacity: 0; transition: opacity .35s ease; will-change: transform; }
.callout::before { content: ""; position: absolute; left: -5px; top: -5px; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 6px rgba(240,128,43,.22); }
.callout span { position: absolute; left: 18px; top: -46px; white-space: nowrap; font-family: var(--font-mono); font-size: .76rem; color: #fff; background: rgba(13,13,13,.86); border: 1px solid rgba(240,128,43,.55); border-radius: 6px; padding: 6px 10px; }

.callout.flip span { left: auto; right: 18px; }
.build:not(.has-webgl) .build__photo { opacity: 1 !important; }
.build:not(.has-webgl) .callout, .build:not(.has-webgl) .rail { display: none; }

/* ---------- speed band ---------- */
.speed { background: var(--bg-black); padding: clamp(72px, 10vw, 128px) 0; }
.speed__big { font-family: var(--font-display); font-weight: 600; font-size: clamp(4.2rem, 14vw, 11rem); line-height: .85; letter-spacing: -0.05em; margin: 0 0 .1em; }
.speed__big small { font-size: .3em; letter-spacing: -0.01em; color: var(--muted); font-weight: 500; margin-left: .2em; }
.speed__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: end; }
.timeline { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line-strong); }
.timeline li { position: relative; padding: 0 0 22px 26px; }
.timeline li::before { content: ""; position: absolute; left: -6px; top: 7px; width: 11px; height: 11px; border-radius: 50%; background: var(--bg-black); border: 2px solid var(--accent); }
.timeline li:last-child { padding-bottom: 0; }
.timeline b { display: block; font-family: var(--font-display); font-weight: 600; }
.timeline span { color: var(--muted); font-size: .95rem; }
.timeline .t { float: right; font-family: var(--font-mono); font-size: .8rem; color: var(--accent); margin-left: 12px; }

/* ---------- families ---------- */
.families-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 16px; margin-bottom: 36px; }
.families-head h2 { margin: 0; font-size: clamp(2rem, 5vw, 3.6rem); letter-spacing: -0.03em; }
.fam-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.fam { background: #151719; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; display: flex; flex-direction: column; opacity: 0; transform: translateY(28px); transition: opacity .7s ease var(--d, 0ms), transform .7s ease var(--d, 0ms), border-color .2s; }
.fam.is-in { opacity: 1; transform: none; }
.fam:hover { border-color: rgba(240,128,43,.45); }
.fam__media { position: relative; aspect-ratio: 4 / 3; background: #0b0d10; overflow: hidden; }
.fam__img { width: 100%; height: 100%; object-fit: cover; transition: opacity .35s ease, transform 6s ease; }
.fam:hover .fam__img { transform: scale(1.04); }
.fam__img.is-swap { opacity: .25; }
.fam__draw { position: absolute; right: 14px; bottom: 14px; width: 30%; max-width: 170px; background: #fff; border-radius: 8px; padding: 6px; box-shadow: 0 10px 30px rgba(0,0,0,.45); }
.fam__shown { position: absolute; left: 14px; top: 14px; max-width: calc(100% - 28px); font-size: .72rem; letter-spacing: .03em; color: #fff; background: rgba(0,0,0,.55); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); border-radius: 999px; padding: 4px 10px; }
.fam__media--soon { display: grid; place-items: center; background: repeating-linear-gradient(135deg, #15181b 0 14px, #1a1d20 14px 28px); }
.fam__media--soon span { font-family: var(--font-display); letter-spacing: .2em; text-transform: uppercase; font-size: .8rem; color: var(--accent); border: 1px solid rgba(240,128,43,.5); border-radius: 999px; padding: 8px 16px; }
.fam__body { padding: 22px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.fam__kind { margin: 0; font-family: var(--font-display); font-size: .74rem; letter-spacing: .18em; text-transform: uppercase; color: var(--accent); }
.fam h3 { margin: 0; font-size: 1.7rem; letter-spacing: -0.02em; }
.fam__tag { margin: 0 0 8px; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 6px; }
.chip { font: 500 .85rem var(--font-body); color: var(--text); background: transparent; border: 1px solid var(--line-strong); border-radius: 999px; padding: 6px 12px; cursor: pointer; transition: background .15s, border-color .15s, color .15s; }
a.chip { text-decoration: none; display: inline-block; }
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); font-weight: 700; }
.fam__specs { list-style: none; display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 4px 0 0; padding: 0; font-size: .88rem; color: var(--muted); }
.fam__foot { margin-top: auto; padding-top: 16px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 14px; border-top: 1px solid var(--line); }
.fam__price small { display: block; color: var(--muted); font-size: .74rem; text-transform: uppercase; letter-spacing: .12em; }
.fam__price strong { font-family: var(--font-display); font-size: 1.9rem; font-weight: 600; letter-spacing: -0.02em; }

/* ---------- small screens ---------- */
@media (max-width: 860px) {
  .fam-grid, .speed__grid { grid-template-columns: 1fr; }
  .rail { top: auto; bottom: 18px; transform: none; right: var(--gutter); gap: 6px; }
  .rail li { grid-template-columns: 1fr 16px; font-size: .58rem; gap: 8px; }
  .rail li:not(.is-active) { color: transparent; }
  .bstep { align-items: flex-end; padding-bottom: 14vh; }
  .bstep__card { margin: 0 var(--gutter); max-width: none; padding: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  .fam, .bstep__card { opacity: 1; transform: none; transition: none; }
  .scroll-cue i { animation: none; }
}