/* ================================================================
   Marvel İzleme Ağacı v3 — visual tokens
   ================================================================ */
:root {
  color-scheme: dark;
  --bg: #090b11;
  --surface: rgba(17, 20, 31, .94);
  --surface-2: rgba(9, 11, 18, .96);
  --text: #f5f7ff;
  --muted: #9299ae;
  --line: rgba(255, 255, 255, .11);
  --red: #ef2948;
  --orange: #ff9f43;
  --gold: #ffd35a;
  --cyan: #45e8ff;
  --blue: #6f8cff;
  --purple: #d66cff;
  --shadow: 0 30px 90px rgba(0, 0, 0, .48);
  --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 12% 15%, rgba(239, 41, 72, .10), transparent 26%),
    radial-gradient(circle at 86% 23%, rgba(69, 232, 255, .08), transparent 24%),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow-x: hidden;
}
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
code { color: var(--cyan); }

/* ================================================================
   Ambient motion
   ================================================================ */
.ambient {
  position: fixed;
  z-index: -1;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: .16;
  pointer-events: none;
}
.ambient-a { top: 12%; left: -180px; background: var(--red); animation: ambientA 16s ease-in-out infinite alternate; }
.ambient-b { right: -210px; top: 42%; background: var(--cyan); animation: ambientB 19s ease-in-out infinite alternate; }
@keyframes ambientA { to { transform: translate(110px, 90px) scale(1.16); } }
@keyframes ambientB { to { transform: translate(-100px, -70px) scale(.88); } }

/* ================================================================
   File protocol warning
   ================================================================ */
.protocol-banner {
  position: relative;
  z-index: 120;
  padding: 12px clamp(18px, 4vw, 60px);
  border-bottom: 1px solid rgba(255, 211, 90, .35);
  background: #2a210b;
  color: #fff1bd;
  font-size: 13px;
  line-height: 1.55;
}
.protocol-banner a { color: #fff; font-weight: 800; }
.protocol-banner[hidden] { display: none; }

/* ================================================================
   Navigation and controls
   ================================================================ */
.topbar {
  position: sticky;
  z-index: 80;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 60px);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 9, 15, .82);
  backdrop-filter: blur(20px);
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; min-width: max-content; }
.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 14px 4px 14px 4px;
  background: linear-gradient(145deg, #ff3d5d, #8d061c);
  box-shadow: 0 10px 35px rgba(239, 41, 72, .28);
  font-weight: 950;
}
.brand strong { display: block; font-size: 13px; letter-spacing: .08em; }
.brand small { display: block; margin-top: 2px; color: var(--muted); font-size: 10px; }
.toolbar { display: flex; align-items: center; justify-content: flex-end; gap: 10px; min-width: 0; }
.search {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 260px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .045);
}
.search input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--text); }
.search input::placeholder { color: #747b91; }
.segmented { display: flex; padding: 3px; border: 1px solid var(--line); border-radius: 999px; background: #10131d; }
.mode, .chip {
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-weight: 800;
  transition: .2s ease;
}
.mode { padding: 8px 12px; font-size: 11px; }
.mode:hover, .mode.active { background: #242938; color: #fff; }

/* ================================================================
   Hero and DNA illustration
   ================================================================ */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(340px, .84fr);
  align-items: center;
  gap: 50px;
  min-height: 640px;
  padding: 72px clamp(22px, 6vw, 92px) 52px;
}
.eyebrow { margin: 0 0 14px; color: var(--red); font-size: 11px; font-weight: 950; letter-spacing: .16em; }
.hero h1 { max-width: 900px; margin: 0; font-size: clamp(48px, 6vw, 86px); line-height: .95; letter-spacing: -.055em; }
.hero h1 em { color: transparent; font-style: normal; background: linear-gradient(90deg, #fff, var(--cyan), var(--purple)); -webkit-background-clip: text; background-clip: text; }
.hero-text { max-width: 760px; margin: 25px 0 0; color: #b9bfd0; font-size: clamp(16px, 1.5vw, 20px); line-height: 1.65; }
.hero-actions { display: flex; gap: 12px; margin-top: 30px; }
.primary, .secondary {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  font-weight: 900;
}
.primary { background: linear-gradient(145deg, #ff3857, #9a071e); color: #fff; box-shadow: 0 18px 55px rgba(239, 41, 72, .25); animation: ctaPulse 3.8s ease-in-out infinite; }
.secondary { border-color: var(--line); background: rgba(255, 255, 255, .04); }
@keyframes ctaPulse { 50% { box-shadow: 0 20px 70px rgba(239, 41, 72, .42); } }
.stats { display: flex; gap: 42px; margin-top: 42px; }
.stats div { display: grid; }
.stats strong { font-size: 30px; line-height: 1; }
.stats span { margin-top: 5px; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.dna-hero { position: relative; min-height: 470px; perspective: 900px; animation: heroFloat 6s ease-in-out infinite; }
.helix { position: absolute; inset: 42px 12%; border-left: 8px solid var(--red); border-right: 8px solid var(--cyan); border-radius: 50%; transform: rotate(18deg); opacity: .84; }
.helix::before, .helix::after { content: ""; position: absolute; inset: 0 18%; background: repeating-linear-gradient(0deg, transparent 0 24px, rgba(255,255,255,.24) 25px 27px, transparent 28px 49px); border-radius: 50%; }
.helix-b { transform: rotate(-18deg) scale(.78); opacity: .36; }
.core { position: absolute; top: 50%; left: 50%; display: grid; width: 146px; height: 146px; place-content: center; border: 1px solid rgba(255,255,255,.26); border-radius: 50%; background: radial-gradient(circle, rgba(239,41,72,.58), rgba(8,10,17,.95) 67%); box-shadow: 0 0 100px rgba(239,41,72,.42); transform: translate(-50%, -50%); text-align: center; animation: corePulse 3s ease-in-out infinite; }
.core span { font-size: 38px; font-weight: 950; }
.core small { color: #f6a8b5; font-size: 9px; letter-spacing: .16em; }
.orbit { position: absolute; top: 50%; left: 50%; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; transform: translate(-50%,-50%) rotate(25deg); }
.orbit-one { width: 280px; height: 180px; }
.orbit-two { width: 390px; height: 250px; transform: translate(-50%,-50%) rotate(-31deg); }
@keyframes heroFloat { 50% { transform: translateY(-12px) rotateX(2deg); } }
@keyframes corePulse { 50% { transform: translate(-50%, -50%) scale(1.06); } }

/* ================================================================
   Guide strip
   ================================================================ */
.guide-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 1320px;
  margin: 0 auto 38px;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: rgba(16, 19, 29, .82);
  overflow: hidden;
}
.guide-strip article { display: flex; gap: 14px; min-height: 112px; padding: 24px; border-right: 1px solid var(--line); }
.guide-strip article:last-child { border-right: 0; }
.guide-strip b { color: var(--cyan); font: 900 19px/1 ui-monospace, monospace; }
.guide-strip strong, .guide-strip span { display: block; }
.guide-strip span { margin-top: 6px; color: var(--muted); font-size: 12px; line-height: 1.5; }

/* ================================================================
   Timeline filters and result header
   ================================================================ */
.timeline-area { padding: 42px clamp(14px, 4vw, 62px) 90px; }
.filter-row, .result-head { max-width: 1420px; margin-inline: auto; }
.filter-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px; border: 1px solid var(--line); border-radius: 20px; background: rgba(15,18,28,.82); }
.media-filters { display: flex; gap: 7px; flex-wrap: wrap; }
.chip { padding: 9px 12px; border: 1px solid transparent; font-size: 11px; }
.chip:hover, .chip.active { border-color: var(--line); background: #242938; color: #fff; }
.sort-tools { display: flex; align-items: center; gap: 14px; }
.toggle { display: flex; align-items: center; gap: 8px; color: #c8ccda; font-size: 11px; font-weight: 800; cursor: pointer; }
.toggle input { accent-color: var(--red); }
.sort-label { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 11px; }
.sort-label select { min-height: 36px; padding: 0 30px 0 11px; border: 1px solid var(--line); border-radius: 11px; background: #111521; color: #fff; }
.result-head { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(320px, 1.2fr) auto; align-items: end; gap: 26px; padding: 42px 8px 25px; }
.result-head small { color: var(--red); font-size: 10px; font-weight: 950; letter-spacing: .14em; }
.result-head h2 { margin: 5px 0 0; font-size: clamp(28px, 3vw, 44px); line-height: 1; letter-spacing: -.035em; }
.result-head p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.visible-counter { display: grid; min-width: 86px; text-align: right; }
.visible-counter strong { font-size: 30px; }
.visible-counter span { color: var(--muted); font-size: 10px; text-transform: uppercase; }

/* ================================================================
   Timeline branches and nodes
   ================================================================ */
.timeline-shell { display: grid; grid-template-columns: minmax(0, 1fr) minmax(380px, 520px); gap: 32px; max-width: 1420px; margin: 0 auto; align-items: start; }
.timeline-list { min-width: 0; }
.timeline-branch { position: relative; margin-bottom: 30px; padding: 24px 20px 24px 60px; border: 1px solid var(--line); border-radius: 28px; background: linear-gradient(145deg, rgba(18,21,32,.94), rgba(9,11,18,.88)); overflow: hidden; }
.timeline-branch::before { content: ""; position: absolute; left: 27px; top: 38px; bottom: 28px; width: 3px; border-radius: 999px; background: linear-gradient(180deg, var(--branch-color), rgba(255,255,255,.08), var(--branch-color)); background-size: 100% 220%; animation: lineFlow 5s linear infinite; }
.timeline-branch::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(circle at 0 0, color-mix(in srgb, var(--branch-color) 12%, transparent), transparent 40%); }
.branch-head { position: relative; z-index: 1; display: flex; gap: 14px; margin-bottom: 20px; }
.branch-dot { position: absolute; left: -43px; top: 7px; width: 19px; height: 19px; border: 4px solid #090b11; border-radius: 50%; background: var(--branch-color); box-shadow: 0 0 0 7px color-mix(in srgb, var(--branch-color) 13%, transparent), 0 0 27px var(--branch-color); animation: nodePulse 2.4s ease-in-out infinite; }
.branch-head small { color: var(--branch-color); font-size: 10px; font-weight: 950; letter-spacing: .12em; text-transform: uppercase; }
.branch-head h3 { margin: 4px 0 6px; font-size: 24px; }
.branch-head p { max-width: 760px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
.branch-nodes { position: relative; z-index: 1; display: grid; gap: 9px; }
.node { position: relative; display: grid; grid-template-columns: 58px minmax(0, 1fr) auto; align-items: center; gap: 13px; min-height: 76px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 18px; background: linear-gradient(145deg, rgba(24,27,40,.95), rgba(11,13,20,.94)); cursor: pointer; transition: transform .2s ease, border-color .2s ease, opacity .2s ease, background .2s ease; }
.node::before { content: ""; position: absolute; left: -41px; width: 12px; height: 12px; border: 4px solid #090b11; border-radius: 50%; background: var(--branch-color); }
.node:hover, .node:focus-visible, .node.active { z-index: 2; outline: 0; transform: translateX(7px); border-color: color-mix(in srgb, var(--branch-color) 70%, #fff); background: linear-gradient(145deg, color-mix(in srgb, var(--branch-color) 12%, #171b29), #0d1018); }
.node.parallel { border-left: 4px solid var(--purple); }
.node.recommended { box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--branch-color) 28%, transparent); }
.node.route-dim { opacity: .44; }
.node.route-dim:hover, .node.route-dim:focus-visible, .node.route-dim.active { opacity: 1; }
.node-num { display: grid; gap: 4px; text-align: center; }
.node-num b { color: var(--branch-color); font: 950 18px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.node-num small { color: #757d95; font-size: 8px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.node-main { min-width: 0; }
.node-main b { display: block; overflow: hidden; font-size: 15px; text-overflow: ellipsis; white-space: nowrap; }
.node-main small { display: block; margin-top: 5px; overflow: hidden; color: var(--muted); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.node-badges { display: flex; justify-content: flex-end; gap: 5px; max-width: 260px; flex-wrap: wrap; }
.badge { padding: 5px 8px; border: 1px solid var(--line); border-radius: 999px; color: #c9cedd; font-size: 9px; white-space: nowrap; }
.badge.route { border-color: rgba(255,211,90,.4); background: rgba(255,211,90,.1); color: var(--gold); }
.badge.universe { border-color: rgba(214,108,255,.38); background: rgba(214,108,255,.08); color: #e8b8ff; }
.badge.disputed { border-color: rgba(255,159,67,.44); background: rgba(255,159,67,.09); color: #ffc18b; }
.badge.upcoming { border-color: rgba(69,232,255,.42); background: rgba(69,232,255,.08); color: var(--cyan); }
.badge.video { border-color: rgba(239,41,72,.45); background: rgba(239,41,72,.12); color: #fff; }
.badge.no-video { color: #8b92a7; }
@keyframes lineFlow { to { background-position: 0 220%; } }
@keyframes nodePulse { 50% { transform: scale(1.16); box-shadow: 0 0 0 9px color-mix(in srgb, var(--branch-color) 9%, transparent), 0 0 28px var(--branch-color); } }

/* ================================================================
   Leaf information panel and video layer
   ================================================================ */
.leaf-panel { position: sticky; top: 92px; min-height: 640px; border: 1px solid var(--line); border-radius: 52% 24px 52% 24px / 76px 24px 76px 24px; background: linear-gradient(145deg, rgba(20,23,35,.98), rgba(7,9,15,.98)); box-shadow: var(--shadow); overflow: hidden; }
.leaf-empty { min-height: 640px; display: grid; place-content: center; padding: 42px; text-align: center; color: var(--muted); }
.leaf-empty span { color: #fff; font-size: 22px; font-weight: 900; }
.leaf-empty p { max-width: 320px; margin: 9px auto 0; font-size: 12px; line-height: 1.6; }
.mini-dna { width: 88px; height: 145px; margin: 0 auto 25px; border-left: 5px solid var(--red); border-right: 5px solid var(--cyan); border-radius: 50%; background: repeating-linear-gradient(0deg, transparent 0 14px, rgba(255,255,255,.22) 15px 17px, transparent 18px 29px); transform: rotate(12deg); animation: miniHelix 4s ease-in-out infinite; }
@keyframes miniHelix { 50% { transform: rotate(-12deg) scaleX(.82); } }
.leaf-content { position: relative; transform-origin: 100% 0; animation: leafMorph .36s cubic-bezier(.16,.84,.28,1); }
@keyframes leafMorph { from { opacity: 0; transform: translateX(20px) scale(.96); border-radius: 65% 20% 65% 20%; } to { opacity: 1; transform: none; } }
.panel-close { position: absolute; z-index: 20; top: 13px; right: 14px; display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; background: rgba(4,6,11,.75); color: #fff; cursor: pointer; font-size: 25px; }
.panel-close:hover { background: var(--red); }
.video-wrap { position: relative; aspect-ratio: 16 / 9; background: #05070c; isolation: isolate; overflow: hidden; }
.yt-mount, .yt-mount > div, .yt-mount iframe { position: absolute; inset: 0; width: 100% !important; height: 100% !important; border: 0; }
.yt-poster { position: absolute; z-index: 3; inset: 0; width: 100%; height: 100%; object-fit: cover; transform: scale(1.02); transition: opacity .35s ease, transform 1.1s ease; }
.video-shield { position: absolute; z-index: 4; inset: 0; background: linear-gradient(180deg, rgba(3,4,8,.05), rgba(3,4,8,.22) 55%, rgba(3,4,8,.9)); pointer-events: none; transition: opacity .35s ease; }
.video-wrap.video-live .yt-poster, .video-wrap.video-live .video-shield { opacity: 0; pointer-events: none; }
.video-wrap.video-live .yt-poster { transform: scale(1.09); }
.play-hint { position: absolute; z-index: 7; left: 16px; right: 54px; bottom: 14px; display: flex; align-items: center; gap: 9px; color: #fff; font-size: 11px; font-weight: 850; }
.play-hint i { display: grid; min-width: 34px; height: 34px; place-items: center; border-radius: 50%; background: var(--red); font-style: normal; }
.play-hint span[data-kind="error"] { color: #ffbdc8; }
.play-hint span[data-kind="warning"] { color: #ffe0aa; }
.play-hint span[data-kind="playing"] { color: #b6f7ff; }
.leaf-copy { padding: 23px 26px 31px; }
.leaf-kicker { display: flex; justify-content: space-between; gap: 14px; color: var(--cyan); font-size: 10px; font-weight: 950; letter-spacing: .1em; text-transform: uppercase; }
.leaf-copy h2 { margin: 10px 0 13px; font-size: clamp(28px, 3vw, 43px); line-height: .98; letter-spacing: -.045em; }
.leaf-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 15px; }
.leaf-tags span { padding: 6px 9px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.035); color: #c8cdda; font-size: 9px; }
.summary { margin: 18px 0; color: #d2d6e3; font-size: 14px; line-height: 1.68; }
.info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin: 16px 0; }
.info-card { min-height: 82px; padding: 12px; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.032); }
.info-card strong, .why-card strong, .related > strong, .notice strong { display: block; margin-bottom: 5px; color: var(--gold); font-size: 10px; letter-spacing: .09em; text-transform: uppercase; }
.info-card p, .why-card p, .notice span { margin: 0; color: #bbc1d2; font-size: 11px; line-height: 1.55; }
.why-card { padding: 15px; border: 1px solid rgba(69,232,255,.18); border-radius: 16px; background: rgba(69,232,255,.045); }
.notice { display: grid; gap: 3px; margin: 10px 0; padding: 12px 13px; border-radius: 14px; }
.universe-note { border: 1px solid rgba(214,108,255,.28); background: rgba(214,108,255,.07); }
.universe-note strong { color: #e8b8ff; }
.dispute-note { border: 1px solid rgba(255,159,67,.3); background: rgba(255,159,67,.07); }
.dispute-note strong { color: #ffc18b; }
.related { margin-top: 16px; }
.related div { display: flex; gap: 6px; flex-wrap: wrap; }
.related button { padding: 7px 9px; border: 1px solid var(--line); border-radius: 999px; background: #161a27; color: #dce0ed; cursor: pointer; font-size: 9px; }
.related button:hover { border-color: var(--cyan); }
.trailer-link { display: flex; min-height: 46px; align-items: center; justify-content: center; margin-top: 18px; border-radius: 999px; background: linear-gradient(145deg, #f12c4c, #8e041c); text-decoration: none; font-weight: 900; }
.source-link { display: block; margin-top: 11px; color: var(--cyan); text-align: center; font-size: 10px; text-decoration: none; }
.pin-note { margin: 11px 0 0; color: #737b92; text-align: center; font-size: 9px; }

/* ================================================================
   Scope, sources, diagnostics and footer
   ================================================================ */
.source-section { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; max-width: 1320px; margin: 0 auto 80px; padding: 38px; border: 1px solid var(--line); border-radius: 30px; background: rgba(15,18,27,.86); }
.source-section h2 { margin: 7px 0 14px; font-size: 40px; line-height: 1; letter-spacing: -.04em; }
.source-section p { margin: 0; color: var(--muted); line-height: 1.65; }
.scope-rule { padding: 20px; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.035); }
.scope-rule strong { display: block; margin-bottom: 8px; color: var(--gold); }
.source-links { grid-column: 1 / -1; display: flex; gap: 8px; flex-wrap: wrap; }
.source-links a { padding: 8px 11px; border: 1px solid var(--line); border-radius: 999px; color: #d7dbe7; font-size: 10px; text-decoration: none; }
.diagnostics { max-width: 1320px; margin: 0 auto 80px; padding: 28px; border: 1px solid rgba(69,232,255,.28); border-radius: 26px; background: #0e1420; }
.diagnostics header { display: flex; justify-content: space-between; gap: 20px; }
.diagnostics h2 { margin: 5px 0; }
.diagnostics small { color: var(--cyan); font-weight: 900; }
.diagnostics button { padding: 8px 12px; border: 1px solid var(--line); border-radius: 10px; background: #1c2332; color: #fff; cursor: pointer; }
.test-stage { position: fixed; left: -10000px; width: 480px; height: 270px; }
.test-table-wrap { max-height: 420px; overflow: auto; border: 1px solid var(--line); border-radius: 14px; }
.diagnostics table { width: 100%; border-collapse: collapse; font-size: 11px; }
.diagnostics th, .diagnostics td { padding: 9px 11px; border-bottom: 1px solid var(--line); text-align: left; }
.diagnostics td[data-kind="playing"] { color: var(--cyan); }
.diagnostics td[data-kind="error"], .diagnostics td[data-kind="timeout"] { color: #ff9caf; }
.empty-state { display: grid; gap: 7px; padding: 60px; border: 1px dashed var(--line); border-radius: 24px; color: var(--muted); text-align: center; }
.empty-state strong { color: #fff; font-size: 20px; }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 28px clamp(20px,5vw,70px); border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
footer strong { color: #fff; }

/* ================================================================
   Scroll reveal
   ================================================================ */
.reveal, .reveal-node { opacity: 0; transform: translateY(18px); transition: opacity .52s ease var(--delay, 0ms), transform .52s cubic-bezier(.2,.8,.2,1) var(--delay, 0ms); }
.reveal.revealed, .reveal-node.revealed { opacity: 1; transform: none; }

/* ================================================================
   Responsive layout
   ================================================================ */
@media (max-width: 1120px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .toolbar { width: 100%; justify-content: flex-start; }
  .search { flex: 1; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .dna-hero { position: absolute; right: -80px; width: 420px; opacity: .24; pointer-events: none; }
  .hero-copy { position: relative; z-index: 2; }
  .timeline-shell { grid-template-columns: minmax(0, 1fr) minmax(340px, 430px); gap: 20px; }
}
@media (max-width: 900px) {
  .toolbar { flex-direction: column; align-items: stretch; }
  .segmented { width: 100%; overflow-x: auto; }
  .mode { flex: 1; min-width: max-content; }
  .guide-strip { grid-template-columns: 1fr; margin-inline: 15px; }
  .guide-strip article { border-right: 0; border-bottom: 1px solid var(--line); }
  .guide-strip article:last-child { border-bottom: 0; }
  .filter-row, .result-head { display: flex; align-items: stretch; flex-direction: column; }
  .sort-tools { justify-content: space-between; }
  .visible-counter { text-align: left; }
  .timeline-shell { grid-template-columns: 1fr; }
  .leaf-panel { position: fixed; z-index: 100; inset: 12px; top: 78px; display: none; min-height: 0; overflow: auto; border-radius: 30px; }
  .leaf-panel.open { display: block; }
  .leaf-panel .leaf-empty { display: none; }
  .source-section { margin-inline: 15px; grid-template-columns: 1fr; }
  .source-links { grid-column: 1; }
}
@media (max-width: 620px) {
  .topbar { padding: 11px 12px; }
  .brand strong { font-size: 11px; }
  .hero { padding: 48px 18px 38px; }
  .hero h1 { font-size: 46px; }
  .hero-text { font-size: 15px; }
  .stats { gap: 20px; flex-wrap: wrap; }
  .filter-row { padding: 9px; }
  .sort-tools { align-items: stretch; flex-direction: column; }
  .timeline-area { padding-inline: 9px; }
  .timeline-branch { padding: 20px 10px 20px 42px; }
  .timeline-branch::before { left: 20px; }
  .branch-dot { left: -31px; }
  .node { grid-template-columns: 44px 1fr; padding: 11px; }
  .node::before { left: -30px; }
  .node-badges { grid-column: 2; justify-content: flex-start; max-width: none; }
  .info-grid { grid-template-columns: 1fr; }
  .source-section { padding: 24px; }
  .source-section h2 { font-size: 31px; }
  footer { flex-direction: column; }
}

/* ================================================================
   Reduced motion
   ================================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .001ms !important; }
  .reveal, .reveal-node { opacity: 1; transform: none; }
}

/* ================================================================
   v3.1 — original mobile-first experience patch
   Keeps the desktop composition above 768px, but replaces the phone
   layout with touch-sized controls, readable cards and a bottom sheet.
   ================================================================ */
@media (max-width: 768px), (hover: none) and (pointer: coarse) {
  :root {
    --mobile-pad: 14px;
    --mobile-radius: 18px;
  }

  html {
    scroll-padding-top: 12px;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  body {
    min-width: 0;
    width: 100%;
    overscroll-behavior-x: none;
  }

  .ambient {
    width: 260px;
    height: 260px;
    filter: blur(80px);
    opacity: .12;
  }

  .protocol-banner {
    padding: 10px var(--mobile-pad);
    font-size: 11px;
  }

  /* Compact mobile header: no desktop-width toolbar. */
  .topbar {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    width: 100%;
    padding: max(10px, env(safe-area-inset-top)) var(--mobile-pad) 11px;
    background: rgba(7, 9, 15, .96);
    backdrop-filter: blur(14px);
  }

  .brand {
    min-width: 0;
    gap: 9px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 12px 4px 12px 4px;
  }

  .brand strong {
    overflow: hidden;
    font-size: 11px;
    letter-spacing: .055em;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .brand small {
    font-size: 9px;
  }

  .toolbar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    width: 100%;
  }

  .search {
    width: 100%;
    min-width: 0;
    min-height: 44px;
    padding: 10px 13px;
    border-radius: 14px;
  }

  .search input {
    min-width: 0;
    font-size: 16px; /* Prevents iOS input zoom. */
  }

  .segmented {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    padding: 4px;
    border-radius: 16px;
    overflow: visible;
  }

  .mode {
    min-width: 0;
    min-height: 42px;
    padding: 8px 6px;
    font-size: 10px;
    line-height: 1.2;
    white-space: normal;
  }

  /* Phone hero: artwork is removed so content reads like a native page. */
  .hero {
    display: block;
    min-height: 0;
    padding: 31px var(--mobile-pad) 25px;
  }

  .hero-copy {
    width: 100%;
  }

  .eyebrow {
    margin-bottom: 10px;
    font-size: 9px;
    line-height: 1.55;
    letter-spacing: .12em;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(34px, 10.5vw, 46px);
    line-height: 1.01;
    letter-spacing: -.045em;
  }

  .hero-text {
    margin-top: 17px;
    font-size: 15px;
    line-height: 1.56;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 9px;
    margin-top: 22px;
  }

  .primary,
  .secondary {
    min-width: 0;
    min-height: 46px;
    padding-inline: 12px;
    font-size: 12px;
  }

  .stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-top: 24px;
  }

  .stats div {
    min-width: 0;
    padding: 12px 8px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255,255,255,.035);
    text-align: center;
  }

  .stats strong {
    font-size: 23px;
  }

  .stats span {
    font-size: 8px;
    line-height: 1.35;
  }

  .dna-hero {
    display: none;
  }

  /* Swipeable onboarding cards instead of three desktop columns. */
  .guide-strip {
    display: flex;
    width: auto;
    margin: 0 0 24px;
    padding: 0 var(--mobile-pad) 6px;
    border: 0;
    border-radius: 0;
    background: transparent;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .guide-strip::-webkit-scrollbar { display: none; }

  .guide-strip article {
    flex: 0 0 min(82vw, 330px);
    min-height: 100px;
    margin-right: 10px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--mobile-radius);
    background: rgba(16,19,29,.9);
    scroll-snap-align: start;
  }

  .guide-strip article:last-child {
    margin-right: 0;
    border: 1px solid var(--line);
  }

  .guide-strip span {
    font-size: 11px;
  }

  /* Filters stay readable and horizontally scroll where appropriate. */
  .timeline-area {
    padding: 12px 9px 68px;
  }

  .filter-row {
    gap: 10px;
    padding: 10px;
    border-radius: var(--mobile-radius);
  }

  .media-filters {
    display: flex;
    flex-wrap: nowrap;
    width: 100%;
    padding-bottom: 3px;
    overflow-x: auto;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
  }

  .media-filters::-webkit-scrollbar { display: none; }

  .chip {
    flex: 0 0 auto;
    min-height: 40px;
    padding: 9px 13px;
    scroll-snap-align: start;
  }

  .sort-tools {
    display: grid;
    grid-template-columns: 1fr;
    gap: 9px;
    width: 100%;
  }

  .toggle,
  .sort-label {
    min-height: 44px;
    padding: 0 11px;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: rgba(255,255,255,.025);
  }

  .toggle input {
    width: 18px;
    height: 18px;
  }

  .sort-label {
    justify-content: space-between;
  }

  .sort-label select {
    min-width: 0;
    max-width: 68%;
    min-height: 40px;
    font-size: 12px;
  }

  .result-head {
    gap: 10px;
    padding: 27px 5px 16px;
  }

  .result-head h2 {
    font-size: 29px;
    line-height: 1.04;
  }

  .result-head p {
    font-size: 12px;
    line-height: 1.52;
  }

  .visible-counter {
    display: flex;
    align-items: baseline;
    gap: 7px;
    min-width: 0;
    text-align: left;
  }

  .visible-counter strong { font-size: 24px; }

  /* Compact tree branches and cards; titles wrap instead of looking clipped. */
  .timeline-shell {
    display: block;
  }

  .timeline-branch {
    margin-bottom: 18px;
    padding: 18px 8px 16px 34px;
    border-radius: 19px;
  }

  .timeline-branch::before {
    left: 17px;
    top: 31px;
    bottom: 21px;
    width: 2px;
  }

  .branch-head {
    gap: 10px;
    margin-bottom: 14px;
  }

  .branch-dot {
    left: -25px;
    top: 4px;
    width: 16px;
    height: 16px;
    border-width: 3px;
  }

  .branch-head h3 {
    margin-top: 3px;
    font-size: 19px;
    line-height: 1.15;
  }

  .branch-head p {
    font-size: 11px;
    line-height: 1.48;
  }

  .branch-nodes {
    gap: 8px;
  }

  .node {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 10px;
    min-height: 78px;
    padding: 11px 34px 11px 10px;
    border-radius: 15px;
    touch-action: manipulation;
  }

  .node::before {
    left: -24px;
    width: 10px;
    height: 10px;
    border-width: 3px;
  }

  .node::after {
    content: "›";
    position: absolute;
    right: 12px;
    top: 50%;
    color: var(--branch-color);
    font-size: 23px;
    transform: translateY(-50%);
  }

  .node:hover,
  .node:focus-visible,
  .node.active {
    transform: none;
  }

  .node-num b { font-size: 16px; }
  .node-num small { font-size: 7px; }

  .node-main b,
  .node-main small {
    overflow: visible;
    text-overflow: initial;
    white-space: normal;
  }

  .node-main b {
    display: -webkit-box;
    font-size: 14px;
    line-height: 1.25;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .node-main small {
    display: -webkit-box;
    margin-top: 4px;
    font-size: 10px;
    line-height: 1.35;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .node-badges {
    grid-column: 2;
    justify-content: flex-start;
    gap: 4px;
    max-width: none;
    margin-top: -2px;
  }

  .badge {
    padding: 4px 6px;
    font-size: 8px;
  }

  .node-badges > .badge:first-child,
  .badge.no-video {
    display: none;
  }

  /* Mobile information panel becomes a familiar bottom sheet. */
  .leaf-panel {
    position: fixed;
    z-index: 120;
    inset: auto 0 0;
    display: none;
    width: 100%;
    max-height: min(88dvh, 760px);
    min-height: 0;
    border: 1px solid rgba(255,255,255,.16);
    border-bottom: 0;
    border-radius: 25px 25px 0 0;
    box-shadow: 0 -24px 90px rgba(0,0,0,.68);
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .leaf-panel.open {
    display: block;
    animation: mobileSheetIn .26s cubic-bezier(.2,.8,.2,1);
  }

  body:has(.leaf-panel.open) {
    overflow: hidden;
  }

  body:has(.leaf-panel.open)::before {
    content: "";
    position: fixed;
    z-index: 110;
    inset: 0;
    background: rgba(0,0,0,.66);
    backdrop-filter: blur(3px);
  }

  @keyframes mobileSheetIn {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .leaf-content {
    padding-bottom: env(safe-area-inset-bottom);
    animation: none;
  }

  .leaf-content::before {
    content: "";
    display: block;
    position: sticky;
    z-index: 15;
    top: 0;
    width: 46px;
    height: 5px;
    margin: 9px auto -14px;
    border-radius: 999px;
    background: rgba(255,255,255,.34);
  }

  .panel-close {
    position: fixed;
    top: auto;
    right: 13px;
    bottom: calc(min(88dvh, 760px) - 52px);
    width: 42px;
    height: 42px;
    background: rgba(4,6,11,.92);
  }

  .video-wrap {
    margin-top: 18px;
    aspect-ratio: 16 / 9;
  }

  .play-hint {
    left: 12px;
    right: 55px;
    bottom: 10px;
    font-size: 10px;
  }

  .play-hint i {
    min-width: 31px;
    height: 31px;
  }

  .leaf-copy {
    padding: 19px var(--mobile-pad) 26px;
  }

  .leaf-kicker {
    padding-right: 35px;
    font-size: 9px;
  }

  .leaf-copy h2 {
    margin-top: 8px;
    font-size: clamp(27px, 8vw, 36px);
    line-height: 1.03;
  }

  .leaf-tags span { font-size: 8px; }

  .summary {
    font-size: 14px;
    line-height: 1.62;
  }

  .info-grid {
    grid-template-columns: 1fr 1fr;
    gap: 7px;
  }

  .info-card {
    min-height: 76px;
    padding: 10px;
  }

  .trailer-link {
    min-height: 50px;
  }

  /* Remaining content and tables. */
  .source-section {
    gap: 17px;
    margin: 0 9px 56px;
    padding: 22px var(--mobile-pad);
    border-radius: 20px;
  }

  .source-section h2 { font-size: 30px; }
  .source-section p { font-size: 13px; }
  .scope-rule { padding: 15px; }

  .source-links {
    flex-wrap: nowrap;
    padding-bottom: 3px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .source-links::-webkit-scrollbar { display: none; }
  .source-links a { flex: 0 0 auto; }

  .diagnostics {
    margin: 0 9px 55px;
    padding: 18px 12px;
    border-radius: 20px;
  }

  .diagnostics header {
    flex-direction: column;
  }

  .test-table-wrap {
    width: 100%;
    overflow-x: auto;
  }

  .diagnostics table { min-width: 620px; }

  .empty-state {
    padding: 38px 16px;
  }

  footer {
    padding: 24px var(--mobile-pad) max(24px, env(safe-area-inset-bottom));
    text-align: center;
  }
}

@media (max-width: 390px) {
  .hero h1 { font-size: 34px; }
  .hero-actions { grid-template-columns: 1fr; }
  .stats strong { font-size: 20px; }
  .stats span { letter-spacing: .02em; }
  .info-grid { grid-template-columns: 1fr; }
  .node { padding-right: 30px; }
}

@media (max-width: 768px), (hover: none) and (pointer: coarse) {
  .panel-close {
    position: sticky;
    top: 10px;
    right: auto;
    bottom: auto;
    margin-left: calc(100% - 55px);
    margin-bottom: -52px;
  }
}

@media (max-width: 768px), (hover: none) and (pointer: coarse) {
  .node.route-dim { opacity: .82; }
  .node.route-dim:active,
  .node.route-dim.active { opacity: 1; }
  button, .node, a, select, input { touch-action: manipulation; }
}

/* Prevent decorative artwork from widening tablet/mobile viewports. */
html, body { max-width: 100%; overflow-x: clip; }
@supports not (overflow: clip) {
  html, body { overflow-x: hidden; }
}

@media (max-width: 1120px) {
  .dna-hero { display: none; }
  .ambient { width: 300px; height: 300px; }
  .ambient-a { left: 0; }
  .ambient-b { right: 0; }
}


/* ================================================================
   v3.2 — real-device viewport recovery
   Some Android/WebView configurations report an 800–980 CSS-pixel
   layout viewport on a phone. The old 768px-only breakpoint therefore
   rendered the tablet/desktop composition. Touch capability now forces
   the compact UI, and all root containers explicitly fill the viewport.
   ================================================================ */
#app,
#app > main,
.topbar,
.hero,
.timeline-area,
.timeline-shell,
.timeline-column,
.timeline-list,
.source-section,
footer {
  min-width: 0;
  max-width: 100%;
}

#app {
  width: 100%;
  overflow-x: clip;
}

@supports not (overflow: clip) {
  #app { overflow-x: hidden; }
}

html.touch-ui,
html.touch-ui body {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  overflow-x: clip;
}

html.touch-ui #app,
html.touch-ui #app > main,
html.touch-ui .topbar,
html.touch-ui .hero,
html.touch-ui .timeline-area,
html.touch-ui .timeline-shell,
html.touch-ui .timeline-column,
html.touch-ui .timeline-list {
  width: 100%;
  min-width: 0;
  max-width: none;
}

/* Class fallback mirrors the critical mobile shell even if a browser
   misreports pointer media features. */
html.touch-ui .topbar {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: max(10px, env(safe-area-inset-top)) 14px 11px;
}
html.touch-ui .toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  width: 100%;
}
html.touch-ui .search {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  border-radius: 14px;
}
html.touch-ui .segmented {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  width: 100%;
  overflow: visible;
  border-radius: 16px;
}
html.touch-ui .mode {
  min-width: 0;
  min-height: 42px;
  white-space: normal;
}
html.touch-ui .hero {
  display: block;
  min-height: 0;
  padding-inline: 14px;
}
html.touch-ui .dna-hero { display: none; }
html.touch-ui .timeline-shell { display: block; }
html.touch-ui .timeline-area { padding-inline: 9px; }
html.touch-ui .timeline-branch { width: 100%; }
html.touch-ui .node {
  width: 100%;
  min-width: 0;
}
html.touch-ui .node-main b,
html.touch-ui .node-main small {
  white-space: normal;
}
html.touch-ui .guide-strip article {
  flex-basis: calc(100dvw - 42px);
  max-width: calc(100dvw - 42px);
}
html.touch-ui .leaf-panel {
  width: 100dvw;
  max-width: 100dvw;
}