/* Self-hosted fonts (SIL OFL), latin + latin-ext for Turkish */
@font-face { font-family: "Barlow Condensed"; font-style: italic; font-weight: 800; font-display: swap; src: url("../fonts/barlow-condensed-800-italic-latin-ext.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Barlow Condensed"; font-style: italic; font-weight: 800; font-display: swap; src: url("../fonts/barlow-condensed-800-italic-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Barlow Condensed"; font-style: normal; font-weight: 700; font-display: swap; src: url("../fonts/barlow-condensed-700-latin-ext.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Barlow Condensed"; font-style: normal; font-weight: 700; font-display: swap; src: url("../fonts/barlow-condensed-700-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Barlow Condensed"; font-style: normal; font-weight: 800; font-display: swap; src: url("../fonts/barlow-condensed-800-latin-ext.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Barlow Condensed"; font-style: normal; font-weight: 800; font-display: swap; src: url("../fonts/barlow-condensed-800-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400 700; font-display: swap; src: url("../fonts/inter-400-700-latin-ext.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400 700; font-display: swap; src: url("../fonts/inter-400-700-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 500 700; font-display: swap; src: url("../fonts/jetbrains-mono-500-700-latin-ext.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 500 700; font-display: swap; src: url("../fonts/jetbrains-mono-500-700-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

:root {
  --bg: #0b0c0e;
  --bg-2: #101215;
  --surface: #15181c;
  --surface-2: #1b1f24;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #eef0f2;
  --muted: #9aa3ad;
  --dim: #80888f;
  --red: #e3262d;
  --red-2: #b5121b;
  --heat: #ff7a1a;
  --amber: #f2b10a;
  --green: #3ccf7a;
  --wa: #25d366;
  --heat-grad: linear-gradient(90deg, #b5121b 0%, #e3262d 30%, #ff7a1a 70%, #ffc06a 100%);
  --radius: 14px;
  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --header-h: 68px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, canvas { display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3 { margin: 0; line-height: 1.05; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--heat); outline-offset: 3px; border-radius: 6px; }

.wrap { width: min(1200px, 100% - 40px); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--red); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 12px; }

.eyebrow {
  font: 600 13px/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--heat);
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 18px;
}
.eyebrow.center { display: flex; justify-content: center; }
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); box-shadow: 0 0 12px var(--red); animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: 0.35; } }

h2 { font: 800 clamp(34px, 5vw, 60px)/1 var(--display); text-transform: uppercase; letter-spacing: 0.005em; }
h3 { font: 700 24px/1.1 var(--display); text-transform: uppercase; letter-spacing: 0.01em; }

/* Buttons */
.btn {
  --b: var(--surface-2);
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 50px; padding: 0 24px;
  border-radius: 999px; border: 1px solid transparent;
  background: var(--b);
  font: 700 15px/1 var(--body); letter-spacing: 0.01em;
  transition: transform 0.15s, background 0.2s, border-color 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn svg { width: 18px; height: 18px; fill: currentColor; }
.btn-red { background: var(--red); color: #fff; box-shadow: 0 8px 30px -10px rgba(227, 38, 45, 0.7); }
.btn-wa { background: var(--wa); color: #06210f; }
.btn-ghost { background: transparent; border-color: var(--line-2); }
@media (hover: hover) {
  .btn:hover { transform: translateY(-1px); }
  .btn-red:hover { background: #d0212a; }
  .btn-wa:hover { background: #3ee07b; }
  .btn-ghost:hover { border-color: rgba(255, 255, 255, 0.35); background: rgba(255, 255, 255, 0.04); }
}
.btn-sm { min-height: 42px; padding: 0 18px; font-size: 14px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.35; pointer-events: none; }

/* Header */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50;
  height: var(--header-h);
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled { background: rgba(11, 12, 14, 0.82); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-color: var(--line); }
.header-row { height: 100%; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 38px; height: 38px; color: var(--text); }
.brand-text { display: flex; flex-direction: column; line-height: 0.95; }
.brand-text b { font: 800 24px/1 var(--display); letter-spacing: 0.04em; }
.brand-text small { font: 600 10.5px/1.2 var(--mono); letter-spacing: 0.24em; color: var(--muted); }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { padding: 8px 12px; border-radius: 8px; font-size: 14px; font-weight: 500; color: var(--muted); white-space: nowrap; transition: color 0.2s, background 0.2s; }
.nav a.active { color: var(--text); background: rgba(255, 255, 255, 0.05); }
@media (hover: hover) { .nav a:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); } }
.header-cta { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; width: 44px; height: 44px; border-radius: 10px; border: 1px solid var(--line-2); background: transparent; position: relative; }
.nav-toggle span { position: absolute; left: 12px; right: 12px; height: 2px; background: var(--text); transition: transform 0.25s, top 0.25s; }
.nav-toggle span:first-child { top: 17px; }
.nav-toggle span:last-child { top: 25px; }
.nav-toggle[aria-expanded="true"] span:first-child { top: 21px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { top: 21px; transform: rotate(-45deg); }

/* Hero */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; align-items: center; overflow: hidden; background: var(--bg); }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: pan-y; }
.hero-shade {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(120% 80% at 70% 50%, transparent 40%, rgba(11, 12, 14, 0.6) 100%),
    linear-gradient(90deg, rgba(11, 12, 14, 0.92) 0%, rgba(11, 12, 14, 0.55) 38%, transparent 60%),
    linear-gradient(0deg, var(--bg) 0%, transparent 18%);
}
.hero-inner { position: relative; z-index: 2; padding: calc(var(--header-h) + 40px) 0 120px; pointer-events: none; }
.hero-copy { max-width: 600px; pointer-events: auto; }
.hero h1 { font: 800 clamp(52px, 8.4vw, 116px)/0.9 var(--display); text-transform: uppercase; letter-spacing: -0.005em; margin-bottom: 26px; }
.heat-text { background: var(--heat-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(16px, 1.5vw, 18.5px); color: #c3c9cf; max-width: 520px; margin-bottom: 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }
.hero-points { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px 26px; font-size: 14px; color: var(--muted); }
.hero-points li { display: flex; align-items: center; gap: 8px; }
.hero-points li::before { content: ""; width: 16px; height: 2px; background: var(--red); }

.hud {
  position: absolute; z-index: 3; right: max(20px, calc((100vw - 1200px) / 2)); bottom: 48px;
  width: 300px; padding: 16px 18px 14px;
  background: rgba(16, 18, 21, 0.72); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--line-2); border-radius: 16px;
  font-family: var(--mono);
}
.hud-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.hud-label { display: block; font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--dim); }
.hud-val { font-size: 13px; color: var(--muted); }
.hud-val b { font-size: 28px; font-weight: 700; color: var(--text); font-variant-numeric: tabular-nums; margin-right: 2px; }
.hud-val b.hot { color: var(--heat); text-shadow: 0 0 18px rgba(255, 122, 26, 0.6); }
.hud-bar { height: 6px; border-radius: 6px; background: rgba(255, 255, 255, 0.08); overflow: hidden; }
.hud-bar span { display: block; height: 100%; width: 0; background: var(--heat-grad); border-radius: inherit; }
.hud-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; }
.hud-state { font-size: 11px; letter-spacing: 0.14em; color: var(--dim); }
.hud-state.on { color: var(--red); }
.hud-btn {
  margin-top: 14px; width: 100%; min-height: 46px; border-radius: 12px;
  border: 1px solid rgba(227, 38, 45, 0.5); background: rgba(227, 38, 45, 0.12);
  font: 500 13px/1 var(--body); color: #f3c6c8;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  user-select: none; -webkit-user-select: none; touch-action: none;
  transition: background 0.15s, transform 0.1s;
}
.hud-btn b { color: #fff; }
.hud-btn.on { background: var(--red); color: #fff; transform: scale(0.98); }
.pedal { width: 14px; height: 18px; border-radius: 3px 3px 5px 5px; border: 2px solid currentColor; position: relative; }
.pedal::after { content: ""; position: absolute; left: 2px; right: 2px; top: 4px; height: 2px; background: currentColor; box-shadow: 0 4px 0 currentColor; }
.scroll-cue { position: absolute; z-index: 3; left: 50%; bottom: 26px; width: 26px; height: 42px; margin-left: -13px; border: 2px solid var(--line-2); border-radius: 14px; }
.scroll-cue span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--text); animation: cue 1.8s infinite; }
@keyframes cue { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }
.no-webgl .hud { display: none; }
.no-webgl .hero { background: radial-gradient(60% 60% at 75% 50%, #2a1012 0%, var(--bg) 70%); }

/* Ticker / brands marquee */
.ticker, .brands { overflow: hidden; border-block: 1px solid var(--line); }
.ticker { background: var(--bg-2); }
.ticker-track, .brands-track { display: flex; width: max-content; animation: marquee 40s linear infinite; }
.ticker-track span { font: 800 26px/1 var(--display); text-transform: uppercase; letter-spacing: 0.04em; padding: 20px 28px; color: var(--dim); display: flex; align-items: center; gap: 56px; }
.ticker-track span::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--red); margin-left: 28px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* Sections */
.section { padding: clamp(80px, 11vw, 140px) 0; }
.section-alt { background: var(--bg-2); border-block: 1px solid var(--line); }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head h2 { margin-bottom: 18px; }
.section-head > p:not(.eyebrow) { color: var(--muted); font-size: 17px; }
.section-head .fine { font-size: 13px; color: var(--dim); margin-top: 12px; }

.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
.reveal.in { opacity: 1; transform: none; }

/* Service cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.card {
  position: relative; padding: 26px 24px 28px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: border-color 0.3s, transform 0.3s;
}
.card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity 0.4s;
  background: radial-gradient(240px 160px at var(--mx, 50%) var(--my, 0%), rgba(255, 122, 26, 0.14), transparent 70%);
}
@media (hover: hover) {
  .card:hover { border-color: rgba(255, 122, 26, 0.35); transform: translateY(-3px); }
  .card:hover::before { opacity: 1; }
}
.card-icon { width: 48px; height: 48px; margin-bottom: 22px; color: var(--text); }
.card-icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.tag { display: inline-block; font: 600 11px/1 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--heat); margin-bottom: 10px; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; }

/* Pad change section */
.change { position: relative; height: 560vh; background: linear-gradient(180deg, var(--bg) 0%, #0d0f12 50%, var(--bg) 100%); }
.change-sticky { position: sticky; top: 0; height: 100vh; height: 100svh; display: grid; grid-template-columns: minmax(340px, 0.85fr) 1.15fr; overflow: hidden; }
.change-panel { position: relative; z-index: 2; padding: calc(var(--header-h) + 28px) 32px 40px max(20px, calc((100vw - 1200px) / 2)); display: flex; flex-direction: column; }
.change-panel h2 { font-size: clamp(32px, 3.6vw, 50px); margin-bottom: 10px; }
.change-hint { color: var(--dim); font-size: 14px; margin-bottom: 22px; }
.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; display: flex; flex-direction: column; gap: 2px; }
.steps li { counter-increment: s; position: relative; padding: 9px 0 9px 46px; cursor: pointer; border-radius: 10px; transition: background 0.3s; }
.steps li::before {
  content: counter(s, decimal-leading-zero); position: absolute; left: 8px; top: 10px;
  font: 700 12px/1 var(--mono); color: var(--dim); width: 28px; height: 22px; display: grid; place-items: center;
  border: 1px solid var(--line-2); border-radius: 6px; transition: all 0.3s;
}
.steps li b { font: 700 19px/1.2 var(--display); text-transform: uppercase; letter-spacing: 0.02em; color: var(--dim); transition: color 0.3s; }
.steps li p { max-height: 0; opacity: 0; color: var(--muted); font-size: 14px; max-width: 420px; overflow: hidden; transition: max-height 0.4s, opacity 0.3s, margin 0.4s; }
.steps li.active { background: rgba(255, 255, 255, 0.03); }
.steps li.active b { color: var(--text); }
.steps li.done b { color: #7f878f; }
.steps li.active::before { background: var(--red); border-color: var(--red); color: #fff; }
.steps li.done::before { border-color: rgba(227, 38, 45, 0.6); color: var(--red); }
.steps li.active p { max-height: 140px; opacity: 1; margin-top: 6px; padding-right: 10px; }
.change-progress { margin-top: auto; height: 3px; background: var(--line); border-radius: 3px; overflow: hidden; }
.change-progress span { display: block; height: 100%; width: 0; background: var(--heat-grad); }
.change-stage { position: relative; min-height: 0; }
.change-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.tag3d {
  position: absolute; left: 0; top: 0; z-index: 2; pointer-events: none; opacity: 0;
  margin: -14px 0 0 18px; padding: 8px 12px 8px 14px;
  background: rgba(16, 18, 21, 0.85); border: 1px solid var(--line-2); border-left: 3px solid var(--red); border-radius: 8px;
  font: 500 12px/1.35 var(--mono); white-space: nowrap; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.tag3d::before { content: ""; position: absolute; left: -22px; top: 50%; width: 18px; height: 1px; background: rgba(255, 255, 255, 0.5); }
.tag3d::after { content: ""; position: absolute; left: -25px; top: calc(50% - 3px); width: 6px; height: 6px; border-radius: 50%; background: #fff; }
.tag3d b { display: block; font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.tag3d.ok { border-left-color: var(--green); }
.change.static { height: auto; }
.change.static .change-sticky { position: relative; height: auto; grid-template-columns: 1fr; }
.change.static .change-stage, .change.static .change-progress, .change.static .change-hint { display: none; }
.change.static .steps li { display: block; cursor: default; }

/* Symptoms */
.symptoms { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.sym { padding: 22px 22px 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); display: flex; flex-direction: column; gap: 12px; }
.sym header { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.sym h3 { font-size: 21px; }
.sym p { color: var(--muted); font-size: 14px; flex: 1; }
.urg { font: 600 11px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; padding: 6px 9px; border-radius: 6px; }
.urg-high { background: rgba(227, 38, 45, 0.16); color: #ff6b70; }
.urg-mid { background: rgba(255, 122, 26, 0.14); color: #ffa05c; }
.urg-low { background: rgba(242, 177, 10, 0.12); color: #f5c94a; }
.listen {
  align-self: flex-start; display: inline-flex; align-items: center; gap: 10px;
  padding: 9px 14px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent;
  font-size: 13px; font-weight: 600; transition: border-color 0.2s, background 0.2s;
}
@media (hover: hover) { .listen:hover { border-color: rgba(255, 255, 255, 0.35); } }
.listen.playing { background: rgba(255, 122, 26, 0.15); border-color: var(--heat); }
.wave { width: 18px; height: 14px; background: linear-gradient(var(--heat), var(--heat)) 0 50% / 3px 40% no-repeat, linear-gradient(var(--heat), var(--heat)) 5px 50% / 3px 100% no-repeat, linear-gradient(var(--heat), var(--heat)) 10px 50% / 3px 60% no-repeat, linear-gradient(var(--heat), var(--heat)) 15px 50% / 3px 30% no-repeat; }
.listen.playing .wave { animation: wave 0.5s infinite alternate; }
@keyframes wave { to { background-size: 3px 100%, 3px 30%, 3px 90%, 3px 70%; } }

/* Quiz */
.quiz-wrap { display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px; align-items: start; }
.quiz { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 30px; min-height: 420px; display: flex; flex-direction: column; }
.quiz-progress { height: 4px; background: var(--line); border-radius: 4px; overflow: hidden; margin-bottom: 28px; }
.quiz-progress span { display: block; height: 100%; width: 0; background: var(--heat-grad); transition: width 0.4s; }
.quiz-body { flex: 1; }
.quiz-q { font: 700 clamp(24px, 2.6vw, 32px)/1.1 var(--display); text-transform: uppercase; margin-bottom: 22px; }
.quiz-opts { display: grid; gap: 10px; }
.quiz-opt {
  text-align: left; padding: 16px 18px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--line);
  font-weight: 500; transition: border-color 0.2s, background 0.2s, transform 0.15s;
  display: flex; align-items: center; gap: 14px;
}
.quiz-opt::before { content: ""; width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--line-2); flex: none; }
@media (hover: hover) { .quiz-opt:hover { border-color: rgba(255, 122, 26, 0.5); } }
.quiz-opt.sel { border-color: var(--heat); background: rgba(255, 122, 26, 0.08); }
.quiz-opt.sel::before { border-color: var(--heat); background: radial-gradient(var(--heat) 45%, transparent 50%); }
.quiz-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 24px; }
.quiz-count { font: 500 13px var(--mono); color: var(--dim); }
.quiz-anim { animation: qin 0.35s ease; }
@keyframes qin { from { opacity: 0; transform: translateX(14px); } }
.result { text-align: left; }
.gauge { position: relative; width: 220px; height: 120px; margin: 0 0 18px; }
.gauge svg { width: 100%; height: 100%; overflow: visible; }
.gauge .needle { transform-origin: 110px 110px; transition: transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1); }
.result-level { font: 800 40px/1 var(--display); text-transform: uppercase; margin-bottom: 12px; }
.result-level.good { color: var(--green); }
.result-level.mid { color: var(--amber); }
.result-level.bad { color: var(--red); }
.result p { color: var(--muted); margin-bottom: 12px; }
.result ul { margin: 0 0 22px; padding-left: 18px; color: #c3c9cf; font-size: 14.5px; }
.result-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* Tools */
.tools { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.tool { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 28px; display: flex; flex-direction: column; gap: 18px; }
.tool h3 { font-size: 28px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label, .field .label { font-size: 13px; font-weight: 600; color: var(--muted); }
.field output { font: 700 15px var(--mono); color: var(--text); }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 28px; background: transparent; }
input[type="range"]::-webkit-slider-runnable-track { height: 6px; border-radius: 6px; background: linear-gradient(90deg, var(--red) var(--fill, 50%), rgba(255, 255, 255, 0.1) var(--fill, 50%)); }
input[type="range"]::-moz-range-track { height: 6px; border-radius: 6px; background: linear-gradient(90deg, var(--red) var(--fill, 50%), rgba(255, 255, 255, 0.1) var(--fill, 50%)); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 22px; height: 22px; margin-top: -8px; border-radius: 50%; background: #fff; border: 4px solid var(--red); }
input[type="range"]::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 4px solid var(--red); }
.seg { display: flex; flex-wrap: wrap; gap: 6px; }
.seg label, .chips label { position: relative; }
.seg input, .chips input { position: absolute; opacity: 0; pointer-events: none; }
.seg span, .chips span {
  display: inline-block; padding: 9px 14px; border-radius: 10px; border: 1px solid var(--line-2);
  font-size: 13.5px; font-weight: 500; color: var(--muted); cursor: pointer; transition: all 0.2s;
}
.seg input:checked + span, .chips input:checked + span { background: rgba(227, 38, 45, 0.14); border-color: var(--red); color: var(--text); }
.seg input:focus-visible + span, .chips input:focus-visible + span { outline: 2px solid var(--heat); outline-offset: 2px; }
.track { position: relative; height: 54px; border-radius: 10px; background: repeating-linear-gradient(90deg, transparent 0 38px, rgba(255, 255, 255, 0.05) 38px 40px), #0e1013; border: 1px solid var(--line); overflow: hidden; }
.track-react, .track-brake { position: absolute; top: 14px; bottom: 14px; transition: left 0.5s, width 0.5s; }
.track-react { left: 0; background: repeating-linear-gradient(45deg, #4a525b 0 6px, #3a4048 6px 12px); border-radius: 6px 0 0 6px; }
.track-brake { background: var(--heat-grad); border-radius: 0 6px 6px 0; }
.track-ref { position: absolute; top: 0; bottom: 0; border-left: 2px dashed rgba(60, 207, 122, 0.8); transition: left 0.5s; }
.track-ref span { position: absolute; top: 2px; left: 6px; font: 500 10px var(--mono); color: var(--green); white-space: nowrap; }
.track-car { position: absolute; top: 50%; width: 30px; height: 14px; margin: -7px 0 0 -30px; background: #fff; border-radius: 4px 8px 3px 3px; transition: left 0.5s; }
.tool-result { display: flex; flex-wrap: wrap; gap: 10px 28px; padding-top: 4px; }
.tool-result .k { display: block; font: 500 11px var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--dim); }
.tool-result b { font: 800 34px/1 var(--display); }
.tool-result span:not(.k) { font: 600 18px/1.9 var(--body); }
.tool-note { font-size: 13px; color: var(--dim); }
.tool-note strong { color: var(--heat); font-weight: 600; }
.pad-viz { position: relative; height: 92px; display: flex; align-items: center; gap: 4px; padding-left: 4px; }
.pad-disc { width: 16px; height: 86px; border-radius: 3px; background: linear-gradient(90deg, #6b6f74, #c3c7cc 40%, #8a8e93); }
.pad-block { display: flex; align-items: center; height: 70px; flex: 1; max-width: 340px; }
.pad-friction { height: 62px; width: 50%; background: repeating-linear-gradient(0deg, #3b3531 0 3px, #45403b 3px 5px); border-radius: 3px 0 0 3px; transition: width 0.4s, box-shadow 0.4s; }
.pad-friction.low { box-shadow: inset 0 0 0 2px var(--red); }
.pad-plate { width: 18px; height: 70px; background: #24272b; border-radius: 0 3px 3px 0; }
.pad-scale { position: absolute; left: 24px; right: 0; max-width: 300px; bottom: -6px; height: 12px; font: 500 10px var(--mono); color: var(--dim); }
.pad-scale span { position: absolute; left: var(--at); transform: translateX(-50%); }

/* Guide */
.guide-tabs { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 6px; margin-bottom: 28px; scrollbar-width: none; }
.guide-tabs::-webkit-scrollbar { display: none; }
.guide-tabs button {
  flex: none; padding: 11px 16px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent;
  font-size: 14px; font-weight: 600; color: var(--muted); transition: all 0.2s;
}
.guide-tabs button[aria-selected="true"] { background: var(--text); color: var(--bg); border-color: var(--text); }
.guide-panel { animation: qin 0.35s ease; }
.guide-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; color: #c3c9cf; }
.guide-cols strong { color: var(--text); }
.guide-note { margin-top: 20px; color: var(--muted); font-size: 14.5px; max-width: 820px; }
.guide-note strong { color: var(--text); }
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-bottom: 30px; }
.flow-step { position: relative; padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; display: flex; flex-direction: column; gap: 6px; }
.flow-step b { font: 700 12px var(--mono); color: var(--heat); }
.flow-step span { font: 700 22px/1 var(--display); text-transform: uppercase; }
.flow-step small { color: var(--muted); font-size: 13px; line-height: 1.4; }
.flow-step:not(:last-child)::after { content: "→"; position: absolute; right: -11px; top: 50%; transform: translateY(-50%); z-index: 1; color: var(--heat); font-weight: 700; background: var(--bg-2); padding: 2px 0; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; min-width: 560px; }
th, td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); }
thead th { font: 600 11.5px var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); background: var(--surface); }
tbody th { font-weight: 600; color: var(--text); }
tbody td { color: #c3c9cf; }
tbody tr:last-child > * { border-bottom: 0; }
.disc-types { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.disc-types > div { padding: 22px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
.disc-types svg { width: 72px; height: 72px; margin-bottom: 14px; fill: none; stroke: var(--text); stroke-width: 2.5; stroke-linecap: round; }
.disc-types svg .fill { fill: var(--heat); stroke: none; }
.disc-types b { display: block; font: 700 22px/1 var(--display); text-transform: uppercase; margin-bottom: 8px; }
.disc-types p { color: var(--muted); font-size: 14px; }
.boil { display: grid; gap: 8px; margin-top: 20px; max-width: 620px; }
.boil-bar { height: 34px; background: var(--surface); border-radius: 8px; overflow: hidden; }
.boil-bar span { display: flex; align-items: center; height: 100%; width: var(--w); padding-left: 12px; background: var(--heat-grad); font: 600 12.5px var(--mono); color: #1a0a04; white-space: nowrap; }
.boil-bar.wet span { background: linear-gradient(90deg, #2a6bb5, #49a3e0); color: #fff; }
.bed { list-style: none; counter-reset: b; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.bed li { counter-increment: b; padding: 22px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; color: var(--muted); font-size: 14px; }
.bed li::before { content: counter(b, decimal-leading-zero); display: block; font: 700 12px var(--mono); color: var(--heat); margin-bottom: 10px; }
.bed li b { display: block; font: 700 21px/1.1 var(--display); text-transform: uppercase; color: var(--text); margin-bottom: 8px; }
.myths { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.myths > div { padding: 22px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
.myths .x { display: inline-block; font: 600 10.5px var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: #ff6b70; background: rgba(227, 38, 45, 0.14); padding: 5px 8px; border-radius: 5px; margin-bottom: 12px; }
.myths b { display: block; font-size: 16px; margin-bottom: 8px; text-decoration: line-through; text-decoration-color: rgba(227, 38, 45, 0.7); text-decoration-thickness: 2px; }
.myths p { color: var(--muted); font-size: 14px; }

/* Numbers */
.numbers { padding: 80px 0; background: radial-gradient(60% 120% at 50% 0%, rgba(227, 38, 45, 0.12), transparent 70%); border-bottom: 1px solid var(--line); }
.numbers-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.num b { font: 800 clamp(56px, 7vw, 92px)/0.9 var(--display); }
.num-wide b { font-size: clamp(46px, 5.2vw, 72px); }
.num b i { font-style: normal; color: var(--heat); margin: 0 4px; font-size: 0.6em; vertical-align: middle; }
.num .unit { font: 700 22px var(--display); color: var(--heat); margin-left: 6px; text-transform: uppercase; }
.num p { margin-top: 12px; color: var(--muted); font-size: 14.5px; max-width: 260px; }

/* Process */
.process { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line-2); }
.process li { padding: 30px 26px 0 0; position: relative; }
.process li::before { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 5px var(--bg); }
.pn { font: 800 54px/1 var(--display); color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, 0.25); display: block; margin-bottom: 14px; }
.process h3 { margin-bottom: 10px; }
.process p { color: var(--muted); font-size: 14.5px; }

/* Brands */
.brands { padding: 40px 0 0; background: var(--bg); }
.brands .eyebrow { color: var(--dim); }
.brands-track { animation-duration: 60s; padding: 6px 0 34px; }
.brands-track span { font: 700 30px/1 var(--display); text-transform: uppercase; color: #626a73; padding: 0 30px; transition: color 0.3s; }
@media (hover: hover) { .brands-track span:hover { color: var(--text); } }

/* FAQ */
.inspect-wrap { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 60px; align-items: start; }
.inspect-wrap .section-head .btn { margin-top: 24px; }
.inspect { list-style: none; margin: 0; padding: 0; counter-reset: i; }
.inspect li { counter-increment: i; position: relative; padding: 20px 0 20px 46px; border-bottom: 1px solid var(--line-2); }
.inspect li::before {
  content: counter(i, decimal-leading-zero); position: absolute; left: 0; top: 21px;
  font: 700 12px/1 var(--mono); color: var(--heat); width: 28px; height: 22px; display: grid; place-items: center;
  border: 1px solid var(--line-2); border-radius: 6px;
}
.inspect b { display: block; font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.inspect p { color: var(--muted); font-size: 14.5px; }

/* Booking + contact */
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 50px; align-items: start; }
.booking { display: grid; gap: 16px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.booking input:not([type="checkbox"]), .booking textarea {
  width: 100%; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--line-2); background: var(--surface);
  color: var(--text); font: 500 15px var(--body); transition: border-color 0.2s;
  color-scheme: dark;
}
.booking input:focus, .booking textarea:focus { outline: none; border-color: var(--heat); }
.booking .invalid { border-color: var(--red) !important; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.form-msg { font-size: 14px; color: var(--muted); min-height: 1.4em; }
.contact { display: grid; gap: 14px; }
.contact-card { padding: 28px; background: var(--surface); border: 1px solid var(--line); border-radius: 20px; }
.contact-card h3 { font-size: 22px; margin-bottom: 14px; }
.contact-card dl { margin: 0 0 26px; display: grid; grid-template-columns: auto 1fr; gap: 10px 20px; font-size: 15px; }
.contact-card dt { color: var(--dim); font: 500 12px/1.9 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; }
.contact-card dd { margin: 0; }
.contact-card dd a { border-bottom: 1px solid var(--line-2); }
.hours { list-style: none; margin: 0; padding: 0; font-size: 15px; }
.hours li { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed var(--line); color: var(--muted); }
.hours li.today { color: var(--text); font-weight: 600; }
.open-now { margin: 14px 0 20px; font: 600 13px var(--mono); display: flex; align-items: center; gap: 8px; }
.open-now::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.open-now.open { color: var(--green); }
.open-now.closed { color: #ff6b70; }
.contact-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.map { border-radius: 20px; overflow: hidden; border: 1px solid var(--line); aspect-ratio: 16 / 10; background: var(--surface); }
.map iframe { width: 100%; height: 100%; border: 0; filter: grayscale(1) invert(0.92) contrast(0.85) hue-rotate(180deg); }

/* Footer + mobile bar */
.footer { border-top: 1px solid var(--line); padding: 40px 0 50px; color: var(--dim); font-size: 14px; }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.footer .brand-text b { color: var(--text); }
.action-bar { display: none; }

/* Responsive */
/* Gallery */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.gallery button { padding: 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--surface); cursor: zoom-in; aspect-ratio: 4 / 3; }
.gallery img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gallery-more { margin: 22px auto 0; display: flex; }
.gallery-more[hidden] { display: none; }
.lightbox { border: 0; padding: 0; background: transparent; max-width: min(1100px, 94vw); max-height: 94vh; color: var(--text); }
.lightbox::backdrop { background: rgba(5, 6, 8, 0.9); }
.lightbox img { display: block; max-width: 100%; max-height: 80vh; margin: 0 auto; border-radius: 10px; }
.lightbox p { text-align: center; color: var(--muted); margin: 12px 0; min-height: 1em; }
.lightbox button { display: flex; margin: 0 auto; }
@media (max-width: 640px) { .gallery { grid-template-columns: repeat(2, 1fr); gap: 8px; } }

/* Narrow desktops: tighten the nav so it stays on one line until the menu collapses */
@media (max-width: 1240px) {
  .header-row { gap: 16px; }
  .nav a { padding: 8px 8px; }
}

@media (max-width: 1100px) {
  .nav { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; flex-direction: column; gap: 0; padding: 12px 20px 24px; background: rgba(11, 12, 14, 0.97); border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .nav a { padding: 14px 6px; font-size: 17px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .header-cta { margin-left: auto; }
  .nav-toggle { display: block; }
  .cards, .symptoms { grid-template-columns: repeat(2, 1fr); }
  .disc-types, .bed { grid-template-columns: repeat(2, 1fr); }
  .myths { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .flow-step::after { display: none; }
  .numbers-grid { grid-template-columns: repeat(2, 1fr); }
  .quiz-wrap, .inspect-wrap, .contact-grid { grid-template-columns: 1fr; gap: 10px; }
  .tools { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .hero { align-items: flex-start; }
  /* Canvas covers only the disc area at the bottom of the hero, not the whole screen */
  .hero-canvas {
    top: auto; height: min(100%, calc(80vw + 200px));
    /* Fade the top edge so bloom glow does not end in a hard line */
    -webkit-mask-image: linear-gradient(to bottom, transparent 0, #000 30%);
    mask-image: linear-gradient(to bottom, transparent 0, #000 30%);
  }
  /* Opaque panels instead of backdrop blur: blur over the live 3D canvas is recomputed every frame */
  .site-header.scrolled, .hud, .tag3d { backdrop-filter: none; -webkit-backdrop-filter: none; }
  .site-header.scrolled { background: rgba(11, 12, 14, 0.97); }
  .hud { background: rgba(16, 18, 21, 0.95); }
  .tag3d { background: rgba(16, 18, 21, 0.95); }
  .hero-inner { padding: calc(var(--header-h) + 24px) 0 calc(80vw + 130px); }
  .hero-shade { background: linear-gradient(180deg, rgba(11, 12, 14, 0.9) 0%, rgba(11, 12, 14, 0.55) 45%, transparent 65%), linear-gradient(0deg, var(--bg) 0%, transparent 12%); }
  .hud { left: 16px; right: 16px; width: auto; bottom: 16px; padding: 10px 12px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 8px 12px; }
  .hud-row { margin: 0; gap: 16px; }
  .hud-val b { font-size: 21px; }
  .hud-bar { grid-column: 1 / -1; grid-row: 2; height: 4px; }
  .hud-foot { display: none; }
  .hud-btn { margin: 0; width: auto; min-height: 44px; padding: 0 14px; grid-column: 2; grid-row: 1; }
  .hud-btn-pre { display: none; }
  .scroll-cue { display: none; }

  .change { height: 620vh; }
  .change-sticky { grid-template-columns: 1fr; grid-template-rows: 1fr auto; }
  .change-stage { grid-row: 1; }
  .change-panel { grid-row: 2; padding: 16px 16px 20px; background: linear-gradient(0deg, var(--bg) 70%, transparent); }
  .change-panel .eyebrow, .change-hint { display: none; }
  .change-panel h2 { font-size: 22px; margin-bottom: 10px; }
  .steps { gap: 0; }
  .steps li { padding-left: 42px; }
  /* Collapse instead of display:none so hidden steps still advance the step counter */
  .steps li:not(.active) { height: 0; padding: 0; overflow: hidden; visibility: hidden; }
  .steps li.active { background: none; }
  .change-progress { margin-top: 12px; }
  .tag3d { font-size: 11px; }
}

@media (max-width: 640px) {
  :root { --header-h: 62px; }
  .wrap { width: calc(100% - 32px); }
  .hide-sm { display: none; }
  .header-cta .btn-red span { display: none; }
  .header-cta .btn-red { width: 44px; padding: 0; }
  .brand-text b { font-size: 21px; }
  .hero-actions .btn { flex: 1 1 auto; }
  .cards, .symptoms, .disc-types, .bed, .myths, .flow { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; border-top: 0; border-left: 1px solid var(--line-2); padding-left: 22px; gap: 28px; }
  .process li { padding: 0; }
  .process li::before { left: -27px; top: 8px; }
  .guide-cols, .row2 { grid-template-columns: 1fr; }
  .quiz, .tool, .contact-card { padding: 22px; }
  .section-head { margin-bottom: 36px; }
  .numbers-grid { gap: 28px 16px; }
  .footer { padding-bottom: 100px; }
  .action-bar {
    display: grid; grid-template-columns: repeat(3, 1fr); position: fixed; left: 10px; right: 10px; bottom: calc(10px + env(safe-area-inset-bottom)); z-index: 60;
    background: rgb(21, 24, 28);
    border: 1px solid var(--line-2); border-radius: 16px; overflow: hidden;
    transform: translateY(150%); transition: transform 0.35s;
  }
  .action-bar.show { transform: none; }
  .change-panel { padding-bottom: 86px; }
  .action-bar a { padding: 15px 0; text-align: center; font-weight: 700; font-size: 14px; }
  .action-bar a:first-child { background: var(--red); color: #fff; }
  .action-bar a.wa { color: var(--wa); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .ticker-track, .brands-track, .eyebrow .dot, .scroll-cue span { animation: none; }
}