/* Patagonia Tecnología — dark "night in the Andes" theme.
   Palette derived from the huemul logo: deep navy + teal/cyan circuitry, with a sparing dusk-amber accent. */
:root {
  --bg: #0c1524;
  --bg-2: #08101c;
  --panel: #111f33;
  --line: rgba(120, 200, 215, .16);
  --teal: #3ab9c8;
  --cyan: #22d3c5;
  --ice: #cfeff3;
  --amber: #e0a458;
  --text: #e6eff3;
  --muted: #8fa6b4;
  --font-d: 'Sora', system-ui, sans-serif;
  --font-b: 'Inter', system-ui, sans-serif;
  --font-m: 'JetBrains Mono', ui-monospace, monospace;
  --gut: clamp(1.25rem, 5vw, 4rem);
  --ease: cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 300 1.0625rem/1.7 var(--font-b);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-d); font-weight: 600; line-height: 1.12; margin: 0; letter-spacing: -.01em; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }
[hidden] { display: none !important; }
.skip { position: absolute; left: -999px; top: 0; background: var(--cyan); color: #04121a; padding: .6rem 1rem; z-index: 100; }
.skip:focus { left: 1rem; top: 1rem; }
.wrap { max-width: 1180px; margin-inline: auto; padding-inline: var(--gut); }
.grad { background: linear-gradient(100deg, var(--ice), var(--cyan) 55%, var(--teal)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.label { font: 500 .78rem/1 var(--font-m); letter-spacing: .22em; text-transform: uppercase; color: var(--teal); margin-bottom: 1.4rem; }
.h2 { font-size: clamp(1.9rem, 4.4vw, 3.3rem); max-width: 22ch; margin-bottom: 1.5rem; }
.lead { color: var(--muted); font-size: 1.15rem; max-width: 62ch; }
.sec { padding-block: clamp(4.5rem, 10vw, 8rem); position: relative; }
.eyebrow { font: 400 .78rem var(--font-m); letter-spacing: .16em; text-transform: uppercase; color: var(--ice); opacity: .8; display: flex; align-items: center; gap: .7rem; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); animation: pulse 2.4s infinite; }
@keyframes pulse { 50% { opacity: .35; transform: scale(.7); } }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: .6rem; padding: .95rem 1.7rem; border-radius: 999px; border: 1px solid var(--cyan);
  background: var(--cyan); color: #04141b; font: 600 .92rem var(--font-d); letter-spacing: .02em; cursor: pointer; transition: transform .3s var(--ease), box-shadow .3s, background .3s; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 34px -8px rgba(34, 211, 197, .7); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--teal); box-shadow: none; background: rgba(58, 185, 200, .08); }
.btn--sm { padding: .55rem 1.1rem; font-size: .8rem; }

/* Nav */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; display: flex; align-items: center; gap: 1.5rem; padding: .9rem var(--gut); padding-top: max(.9rem, env(safe-area-inset-top)); transition: background .4s, backdrop-filter .4s, border-color .4s; border-bottom: 1px solid transparent; }
.nav.is-scrolled { background: rgba(8, 16, 28, .72); backdrop-filter: blur(14px); border-color: var(--line); }
.brand { display: flex; align-items: center; gap: .7rem; font: 600 .95rem var(--font-d); letter-spacing: .18em; }
.brand em { display: block; font-style: normal; font-weight: 400; font-size: .58rem; letter-spacing: .34em; color: var(--teal); margin-top: 2px; }
.nav__links { display: flex; align-items: center; gap: 1.6rem; margin-left: auto; font: 400 .85rem var(--font-b); }
.nav__links a:not(.btn) { opacity: .75; transition: opacity .2s; }
.nav__links a:not(.btn):hover { opacity: 1; color: var(--cyan); }
.sound { display: flex; align-items: center; gap: .6rem; background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 999px; padding: .4rem .8rem; cursor: pointer; font: 400 .66rem var(--font-m); letter-spacing: .14em; }
.sound:hover { color: var(--text); border-color: var(--teal); }
.sound__bars { display: flex; gap: 2px; align-items: flex-end; height: 12px; }
.sound__bars i { width: 2px; height: 3px; background: currentColor; transition: height .3s; }
.sound[aria-pressed="true"] { color: var(--cyan); }
.sound[aria-pressed="true"] .sound__bars i { animation: eq 1s infinite ease-in-out; }
.sound__bars i:nth-child(2) { animation-delay: .2s !important; } .sound__bars i:nth-child(3) { animation-delay: .4s !important; } .sound__bars i:nth-child(4) { animation-delay: .1s !important; }
@keyframes eq { 50% { height: 12px; } }
.burger { display: none; background: none; border: 0; width: 40px; height: 40px; position: relative; cursor: pointer; }
.burger i { position: absolute; left: 9px; right: 9px; height: 1.5px; background: var(--text); transition: transform .3s; }
.burger i:first-child { top: 16px; } .burger i:last-child { top: 23px; }

/* Hero */
.hero { position: relative; min-height: 100svh; display: grid; grid-template-columns: minmax(0, 1fr); align-items: center; padding: 7rem var(--gut) 5rem; overflow: hidden; isolation: isolate;
  background: radial-gradient(120% 90% at 70% 40%, #12243b 0%, var(--bg) 55%, var(--bg-2) 100%); --mx: 68%; --my: 42%; }
.hero__net { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.hero__stage { position: absolute; right: max(2vw, calc(50% - 620px)); top: 50%; width: min(52vw, 640px); aspect-ratio: 520 / 530; transform: translateY(-50%); z-index: -1; pointer-events: none; }
.hero__deer { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.hero__deer--dim { opacity: .16; filter: blur(.4px); }
.hero__deer--lit { opacity: 1; filter: drop-shadow(0 0 22px rgba(34, 211, 197, .55)) drop-shadow(0 0 60px rgba(58, 185, 200, .35));
  -webkit-mask-image: radial-gradient(circle 240px at var(--lx, 50%) var(--ly, 50%), #000 0%, rgba(0,0,0,.6) 45%, transparent 100%);
  mask-image: radial-gradient(circle 240px at var(--lx, 50%) var(--ly, 50%), #000 0%, rgba(0,0,0,.6) 45%, transparent 100%); }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(circle 420px at var(--mx) var(--my), rgba(34, 211, 197, .09), transparent 70%); }
.hero__copy { max-width: 720px; position: relative; z-index: 2; }
.hero__title { font-size: clamp(2.3rem, 5.4vw, 4.4rem); margin: 1.3rem 0 1.5rem; }
.hero__lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: #b5c8d2; max-width: 56ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2rem; }
.hero__hint { position: absolute; left: var(--gut); bottom: 2rem; display: flex; align-items: center; gap: .8rem; font: 400 .68rem var(--font-m); letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin: 0; }
.hero__hint i { width: 48px; height: 1px; background: var(--teal); }
.hero__tag { position: absolute; right: var(--gut); bottom: 2rem; margin: 0; font: 400 .68rem var(--font-m); letter-spacing: .3em; text-transform: uppercase; color: var(--muted); }

/* Metrics */
.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1px; background: var(--line); border-block: 1px solid var(--line); }
.metric { background: var(--bg); padding: 2.2rem var(--gut); }
.metric strong { display: block; font: 300 clamp(2.4rem, 5vw, 3.6rem)/1 var(--font-d); color: var(--ice); }
.metric span { font: 400 .8rem var(--font-m); letter-spacing: .06em; color: var(--muted); }

/* Philosophy */
.philosophy::before { content: ""; position: absolute; left: 0; top: 12%; width: 40vw; height: 60%; background: radial-gradient(closest-side, rgba(58, 185, 200, .07), transparent); pointer-events: none; }
.philosophy__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 5rem); margin-top: 2rem; }
.philosophy__text p { color: #b5c8d2; }
.philosophy__q { font: 300 1.4rem/1.5 var(--font-d); color: var(--ice) !important; border-left: 2px solid var(--amber); padding-left: 1.3rem; margin-top: 2rem; }
.lessons { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; align-self: start; }
.lessons li { background: var(--bg); padding: 1.6rem; }
.lessons__k { font: 400 .68rem var(--font-m); letter-spacing: .2em; text-transform: uppercase; color: var(--amber); }
.lessons h3 { font-size: 1.15rem; margin: .5rem 0; }
.lessons p { color: var(--muted); font-size: .92rem; line-height: 1.55; margin: 0; }

/* Reasoning */
.reasoning { background: linear-gradient(180deg, var(--bg), var(--bg-2)); }
.tabs { display: flex; gap: .5rem; flex-wrap: wrap; margin: 2.5rem 0 1.5rem; }
.tab { background: none; border: 1px solid var(--line); color: var(--muted); padding: .7rem 1.2rem; border-radius: 999px; cursor: pointer; font: 500 .82rem var(--font-d); transition: all .25s; }
.tab:hover { color: var(--text); border-color: var(--teal); }
.tab.is-active { color: #04141b; background: var(--cyan); border-color: var(--cyan); }
.tabpanel { display: none; grid-template-columns: 1fr 1.1fr; gap: 3rem; align-items: center; padding: 2.5rem; border: 1px solid var(--line); border-radius: 20px; background: rgba(17, 31, 51, .45); min-height: 360px; }
.tabpanel.is-active { display: grid; animation: fade .6s var(--ease); }
@keyframes fade { from { opacity: 0; transform: translateY(10px); } }
.tabpanel h3 { font-size: 1.6rem; margin-bottom: 1rem; }
.tabpanel p { color: #b5c8d2; }
.chain { counter-reset: c; display: grid; gap: .6rem; }
.chain li { counter-increment: c; display: grid; grid-template-columns: 2.4rem 1fr; gap: 0 1rem; padding: .8rem 1rem; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); position: relative; }
.chain li::before { content: counter(c); grid-row: span 2; align-self: center; font: 500 .8rem var(--font-m); color: var(--cyan); border: 1px solid var(--cyan); border-radius: 50%; width: 2rem; height: 2rem; display: grid; place-items: center; }
.chain b { font: 600 .95rem var(--font-d); } .chain span { color: var(--muted); font-size: .85rem; }
.topo, .orch { width: 100%; height: auto; overflow: visible; }
.topo line, .orch .link { stroke: var(--teal); stroke-opacity: .35; stroke-width: 1; }
.topo circle { fill: var(--bg); stroke: var(--cyan); stroke-width: 1.4; transition: r .3s, fill .3s; cursor: pointer; }
.topo circle:hover, .topo circle.hot { fill: var(--cyan); }
.topo text, .orch text { fill: var(--muted); font: 400 10px var(--font-m); letter-spacing: .06em; pointer-events: none; }
.orch .hub { fill: rgba(34, 211, 197, .12); stroke: var(--cyan); }
.orch .agent circle { fill: var(--bg); stroke: var(--teal); stroke-width: 1.4; }
.orch .pulse { fill: var(--cyan); }
.orch .orbit { fill: none; stroke: var(--line); stroke-dasharray: 3 6; }

/* Services */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 1.2rem; margin-top: 3rem; }
.card { position: relative; padding: 2rem; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(160deg, rgba(17, 31, 51, .7), rgba(12, 21, 36, .4)); transition: border-color .4s, transform .5s var(--ease), box-shadow .4s; }
.card:hover { border-color: rgba(34, 211, 197, .5); transform: translateY(-4px); box-shadow: 0 24px 60px -30px rgba(34, 211, 197, .4); }
.card .ico { color: var(--cyan); margin-bottom: 1.2rem; }
.card h3 { font-size: 1.25rem; margin-bottom: .4rem; }
.card__tag { color: var(--teal); font: 400 .85rem var(--font-m); }
.card p { color: #a7bcc8; font-size: .95rem; line-height: 1.6; }
.card ul { margin-top: 1rem; border-top: 1px solid var(--line); padding-top: 1rem; display: grid; gap: .45rem; }
.card li { font-size: .85rem; color: var(--muted); padding-left: 1.1rem; position: relative; }
.card li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 1px; background: var(--cyan); }
.card--focus { border-color: rgba(224, 164, 88, .45); }
.chip { position: absolute; top: 1.4rem; right: 1.4rem; font: 500 .62rem var(--font-m); letter-spacing: .16em; text-transform: uppercase; color: #1a1205; background: var(--amber); padding: .3rem .6rem; border-radius: 999px; }

/* Method */
.method { background: var(--bg-2); }
.method__grid { display: grid; grid-template-columns: minmax(280px, 1fr) 1.1fr; gap: clamp(2rem, 6vw, 5rem); margin-top: 3rem; align-items: center; }
.antler { color: var(--teal); border: 1px solid var(--line); border-radius: 20px; background: rgba(17, 31, 51, .35); padding: 1rem; }
.antler svg { width: 100%; height: auto; }
.antler__lines path { stroke: var(--teal); stroke-opacity: .55; stroke-width: 2; }
.node { cursor: pointer; }
.node__halo { fill: var(--cyan); opacity: 0; transition: opacity .4s, r .4s; }
.node__dot { fill: var(--bg-2); stroke: var(--cyan); stroke-width: 1.6; transition: fill .3s; }
.node__n { fill: var(--cyan); font: 500 12px var(--font-m); transition: fill .3s; }
.node[data-active="true"] .node__halo { opacity: .22; animation: halo 2.4s infinite; }
.node[data-active="true"] .node__dot { fill: var(--cyan); }
.node[data-active="true"] .node__n { fill: #04141b; }
@keyframes halo { 50% { r: 30; opacity: .08; } }
.phases { display: grid; gap: .6rem; }
.phase { border: 1px solid var(--line); border-radius: 14px; background: var(--bg); transition: border-color .3s; }
.phase.is-active { border-color: rgba(34, 211, 197, .55); }
.phase__head { display: flex; align-items: center; gap: 1.2rem; width: 100%; text-align: left; background: none; border: 0; color: inherit; padding: 1.1rem 1.3rem; cursor: pointer; }
.phase__n { font: 300 1.7rem var(--font-d); color: var(--teal); min-width: 2.4rem; }
.phase.is-active .phase__n { color: var(--cyan); }
.phase__head h3 { font-size: 1.15rem; }
.phase__head small { color: var(--muted); font: 300 .88rem var(--font-b); }
.phase__body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .5s var(--ease); }
.phase__body > * { overflow: hidden; min-height: 0; }
.phase.is-active .phase__body { grid-template-rows: 1fr; }
.phase__body p { padding-inline: 1.3rem 1.3rem; margin: 0; color: #a7bcc8; font-size: .95rem; }
.phase.is-active .phase__body p:first-child { padding-top: .3rem; }
.phase__out { padding-block: .9rem 1.3rem !important; color: var(--ice) !important; }
.phase__out b { font: 500 .66rem var(--font-m); letter-spacing: .18em; text-transform: uppercase; color: var(--amber); margin-right: .7rem; }

/* Sectors */
.sector-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 18px; overflow: hidden; margin-top: 3rem; }
.sector { background: var(--bg); padding: 2rem 1.6rem; }
.sector h3 { font-size: 1.2rem; margin-bottom: .6rem; color: var(--ice); }
.sector p { color: var(--teal); font-size: .9rem; }
.sector ul { display: grid; gap: .4rem; margin-top: 1rem; }
.sector li { font-size: .85rem; color: var(--muted); }
.sector li::before { content: "→ "; color: var(--cyan); }

/* Projects */
.proj-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 1.2rem; margin-top: 3rem; }
.proj { padding: 1.8rem; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); position: relative; overflow: hidden; transition: transform .5s var(--ease), border-color .3s; display: flex; flex-direction: column; }
.proj::before { content: ""; position: absolute; inset: 0 0 auto; height: 2px; background: linear-gradient(90deg, var(--cyan), transparent); opacity: .5; }
.proj:hover { transform: translateY(-4px); border-color: rgba(34, 211, 197, .45); }
.proj--feat { background: linear-gradient(160deg, #12304a, var(--panel)); }
.proj__meta { display: flex; justify-content: space-between; gap: 1rem; font: 400 .68rem var(--font-m); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.proj h3 { font-size: 1.4rem; margin: 1rem 0 .3rem; }
.proj__kind { color: var(--teal); font: 400 .82rem var(--font-m); }
.proj p:not(.proj__kind) { color: #a7bcc8; font-size: .95rem; line-height: 1.6; }
.tags { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: auto; padding-top: 1rem; }
.tags li { font: 400 .68rem var(--font-m); padding: .28rem .6rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ice); }
.proj__link { margin-top: 1rem; font: 400 .8rem var(--font-m); color: var(--cyan); }

/* Marquee */
.stack { border-block: 1px solid var(--line); padding: 1.6rem 0; overflow: hidden; background: var(--bg-2); }
.marquee { -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee__track { display: flex; gap: 3rem; width: max-content; animation: marquee 60s linear infinite; }
.marquee__track span { font: 300 1.5rem var(--font-d); color: var(--muted); white-space: nowrap; }
.marquee__track span:nth-child(3n) { color: var(--teal); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* Film */
.film { padding: clamp(3rem, 8vw, 6rem) var(--gut); background: var(--bg-2); }
.film__stage { position: relative; max-width: 1180px; margin: auto; aspect-ratio: 16 / 9; border-radius: 22px; overflow: hidden; border: 1px solid var(--line); background: #060e18; }
.film__video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; background: #060e18; }
.film__stage::after { content: ""; position: absolute; inset: auto 0 0; height: 40%; z-index: 1; pointer-events: none;
  background: linear-gradient(0deg, rgba(6, 14, 24, .8), transparent); }
.film__play { position: absolute; inset: 0; margin: auto; width: 64px; height: 64px; z-index: 2; border-radius: 50%;
  background: rgba(8, 16, 28, .55); border: 1px solid var(--line); backdrop-filter: blur(6px); cursor: pointer;
  display: grid; place-items: center; transition: opacity .3s, transform .3s, border-color .3s; }
.film__play::before { content: ""; width: 0; height: 0; margin-left: 4px; border-style: solid; border-width: 10px 0 10px 16px; border-color: transparent transparent transparent var(--cyan); }
.film__play:hover { transform: scale(1.06); border-color: var(--teal); }
.film__stage.is-playing .film__play { opacity: 0; pointer-events: none; }
.film__caption { position: absolute; left: clamp(1rem, 3vw, 2.5rem); bottom: clamp(1rem, 3vw, 2.5rem); z-index: 2; margin: 0; font: 600 clamp(1rem, 2.6vw, 1.9rem) var(--font-d); text-shadow: 0 2px 20px #000; }
.film__caption small { display: block; margin-top: .3rem; font: 400 clamp(.6rem, 1.3vw, .8rem) var(--font-m); letter-spacing: .2em; text-transform: uppercase; color: var(--cyan); }
.film__ui { position: absolute; inset: auto 0 0; display: flex; align-items: center; gap: .8rem; padding: 1rem; z-index: 2; justify-content: flex-end; flex-wrap: wrap; }
.film__sound { flex: 0 0 auto; }
.film__bar { flex: 0 0 min(180px, 34%); height: 2px; border-radius: 2px; overflow: hidden; background: var(--line); }
.film__bar i { display: block; height: 100%; width: 0; background: var(--cyan); }

/* Contact */
.contact__grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.facts { display: grid; gap: .8rem; margin-top: 2rem; }
.facts li { color: #b5c8d2; font-size: .95rem; border-top: 1px solid var(--line); padding-top: .8rem; }
.facts b { display: block; font: 400 .68rem var(--font-m); letter-spacing: .2em; text-transform: uppercase; color: var(--amber); margin-bottom: .2rem; }
.form { display: grid; gap: 1.1rem; padding: clamp(1.4rem, 3vw, 2.2rem); border: 1px solid var(--line); border-radius: 20px; background: rgba(17, 31, 51, .5); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field { display: grid; gap: .4rem; }
.field span { font: 400 .7rem var(--font-m); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.field small { text-transform: none; letter-spacing: 0; opacity: .7; }
.field input, .field select, .field textarea { width: 100%; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 10px; padding: .85rem 1rem; font: 300 1rem var(--font-b); transition: border-color .2s, box-shadow .2s; }
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(34, 211, 197, .15); }
.field.has-err input, .field.has-err textarea { border-color: #e8807a; }
.err { color: #f0a09a; font: normal 400 .78rem var(--font-b); min-height: 0; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form .btn { justify-self: start; }
.form .btn[disabled] { opacity: .6; cursor: wait; }
.form__status { margin: 0; min-height: 1.4em; font-size: .92rem; color: var(--cyan); }
.form__status.is-error { color: #f0a09a; }

/* Footer */
.footer { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem; justify-content: space-between; padding: 2.5rem var(--gut); border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
.footer img { width: 84px; height: 84px; border-radius: 12px; }
.footer p { margin: 0; flex: 1; } .footer small { color: var(--teal); font-family: var(--font-m); letter-spacing: .12em; }

/* Scroll reveal */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: var(--d, 0s); }
.js .reveal.is-in { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 960px) {
  .nav__links { position: fixed; inset: 0; flex-direction: column; justify-content: center; gap: 2rem; font-size: 1.4rem; background: rgba(8, 16, 28, .97); opacity: 0; pointer-events: none; transition: opacity .35s; margin: 0; }
  .nav__links.is-open { opacity: 1; pointer-events: auto; }
  .burger { display: block; margin-left: auto; z-index: 2; }
  .sound { z-index: 2; }
  .philosophy__grid, .method__grid, .contact__grid, .tabpanel { grid-template-columns: 1fr; }
  .hero__stage { width: 92vw; right: -18vw; top: 62%; opacity: .55; }
  .hero__tag { display: none; }
}
@media (max-width: 560px) {
  .row, .lessons { grid-template-columns: 1fr; }
  .sound__label { display: none; }
  .tabpanel { padding: 1.4rem; }
  .hero__hint { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .marquee__track { animation: none; }
  .js .reveal { opacity: 1; transform: none; }
}