:root {
    --bg: #07171D;
    --panel: #0C2229;
    --line: #173038;
    --text: #F2FAFB;
    --muted: #9DB9C0;
    --dim: #5C838C;
    --dim-hi: #69909A;
    --cyan: #00D4E0;
    --cyan-hi: #6FF0F8;
    --sans: 'Space Grotesk', sans-serif;
    --mono: 'IBM Plex Mono', monospace;
  }

  *, *::before, *::after { box-sizing: border-box; }

  html {
    scroll-behavior: smooth;
    scroll-snap-type: y mandatory;
    background: var(--bg);
  }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
  }

  a { color: var(--cyan); text-decoration: none; }
  a:hover { color: var(--cyan-hi); }
  ::selection { background: var(--cyan); color: var(--bg); }

  @keyframes cyanPulse { 0%, 100% { opacity: .55 } 50% { opacity: 1 } }

  .page { width: 100%; overflow-x: hidden; }

  /* ---------- section shells ---------- */

  section {
    height: 100vh;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 100px 80px;
    overflow: hidden;
  }

  .s-edge {
    justify-content: space-between;
    padding: 60px 80px;
    position: relative;
    overflow: hidden;
  }

  .s-panel { background: var(--panel); }
  .s-glow { position: relative; overflow: hidden; }

  .glow {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
  }

  /* ---------- type ---------- */

  .eyebrow {
    font-family: var(--mono);
    font-size: 16px;
    letter-spacing: .18em;
    color: var(--cyan);
  }

  .mono { font-family: var(--mono); font-size: 16px; color: var(--dim); }

  h2 {
    margin: 0;
    font-size: clamp(36px, 3.6vw, 60px);
    font-weight: 700;
    letter-spacing: -.03em;
  }

  .lead {
    font-size: clamp(19px, 1.7vw, 28px);
    color: var(--muted);
    max-width: 1000px;
    text-wrap: pretty;
  }

  .body-l {
    font-size: clamp(17px, 1.5vw, 24px);
    color: var(--muted);
    text-wrap: pretty;
  }

  .stack { display: flex; flex-direction: column; gap: 14px; }

  /* ---------- header / footer bars ---------- */

  .bar {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .bar-top { align-items: flex-start; }
  .logo { height: 44px; width: auto; display: block; }
  .era { font-family: var(--mono); font-size: 16px; letter-spacing: .18em; color: var(--dim-hi); }
  .bar-meta { font-family: var(--mono); font-size: 16px; color: var(--dim); }
  .scroll-hint { animation: cyanPulse 2.4s ease-in-out infinite; color: var(--cyan); }

  /* ---------- hero ---------- */

  .hero-head { position: relative; display: flex; flex-direction: column; gap: 28px; }

  .hero-15 {
    display: flex;
    align-items: flex-end;
    gap: 32px;
  }

  .hero-15 .num {
    font-size: clamp(180px, 17vw, 300px);
    line-height: .78;
    font-weight: 700;
    letter-spacing: -.05em;
    color: var(--cyan);
  }

  .hero-15 .words {
    font-size: clamp(44px, 4.4vw, 80px);
    line-height: .94;
    font-weight: 500;
    letter-spacing: -.03em;
    padding-bottom: 14px;
  }

  .hero-sub {
    font-size: clamp(22px, 2vw, 34px);
    color: var(--muted);
    max-width: 900px;
    text-wrap: pretty;
  }

  /* ---------- 1111 ---------- */

  .watermark {
    position: absolute;
    right: 6%;
    top: 20%;
    font-family: var(--mono);
    font-size: 420px;
    line-height: 1;
    color: var(--panel);
    pointer-events: none;
    user-select: none;
  }

  .bits {
    position: relative;
    display: flex;
    align-items: baseline;
    gap: 44px;
    flex-wrap: wrap;
  }

  .bits .val {
    font-family: var(--mono);
    font-size: clamp(90px, 10vw, 180px);
    line-height: 1;
    font-weight: 500;
    letter-spacing: -.02em;
    color: var(--cyan);
  }

  .bits .txt {
    font-size: clamp(26px, 2.6vw, 44px);
    font-weight: 500;
    letter-spacing: -.02em;
    max-width: 660px;
    text-wrap: pretty;
  }

  .bits.muted { opacity: .5; }
  .bits.muted .val { font-size: clamp(52px, 6vw, 104px); color: var(--dim); }
  .bits.muted .txt { font-size: clamp(20px, 1.8vw, 30px); font-weight: 400; color: var(--muted); }

  .note {
    position: relative;
    font-size: clamp(20px, 1.8vw, 30px);
    color: var(--muted);
    max-width: 900px;
    text-wrap: pretty;
  }

  /* ---------- timeline ---------- */

  .tl-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
  }

  .years {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    border-bottom: 1px solid var(--line);
  }

  .years button {
    flex: 1;
    background: none;
    border: none;
    border-bottom: 4px solid transparent;
    padding: 18px 0;
    cursor: pointer;
    font-family: var(--mono);
    font-size: 17px;
    color: var(--dim);
    transition: color .2s, border-color .2s;
  }

  .years button:hover { color: var(--text); }
  .years button:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

  .years button[aria-selected="true"] {
    color: var(--cyan);
    border-bottom-color: var(--cyan);
    font-weight: 500;
  }

  .tl-body {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 64px;
    align-items: start;
    min-height: 280px;
  }

  .tl-year {
    font-size: clamp(80px, 8vw, 150px);
    line-height: .86;
    font-weight: 700;
    letter-spacing: -.05em;
    color: var(--cyan);
  }

  .tl-text { display: flex; flex-direction: column; gap: 20px; padding-top: 12px; }

  .tl-title {
    font-size: clamp(28px, 2.8vw, 46px);
    font-weight: 700;
    letter-spacing: -.025em;
    text-wrap: balance;
  }

  .tl-copy {
    font-size: clamp(19px, 1.7vw, 28px);
    color: var(--muted);
    max-width: 900px;
    text-wrap: pretty;
  }

  .tl-tag { font-family: var(--mono); font-size: 16px; color: var(--dim); letter-spacing: .1em; }

  /* ---------- certainties grid ---------- */

  .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 36px 56px; }

  .certainty {
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-left: 4px solid var(--cyan);
    padding-left: 28px;
  }

  .certainty q { font-size: clamp(22px, 2vw, 32px); font-weight: 500; }

  /* ---------- big stat ---------- */

  .stat-row {
    flex-direction: row;
    align-items: center;
    gap: 80px;
    flex-wrap: wrap;
  }

  .stat-huge {
    font-size: clamp(180px, 20vw, 360px);
    line-height: .8;
    font-weight: 700;
    letter-spacing: -.06em;
    color: var(--cyan);
  }

  .stat-copy { display: flex; flex-direction: column; gap: 26px; max-width: 660px; }

  .stat-claim {
    font-size: clamp(24px, 2.4vw, 38px);
    font-weight: 500;
    line-height: 1.24;
    text-wrap: pretty;
  }

  /* ---------- punchline ---------- */

  .punchline {
    font-size: clamp(38px, 4.6vw, 84px);
    font-weight: 700;
    letter-spacing: -.035em;
    line-height: 1.08;
    max-width: 1400px;
    text-wrap: balance;
  }

  /* ---------- proof cards ---------- */

  .proofs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    background: var(--line);
  }

  .proof {
    background: var(--panel);
    padding: 40px 36px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 340px;
  }

  .proof .idx {
    font-family: var(--mono);
    font-size: 15px;
    letter-spacing: .14em;
    color: var(--cyan);
  }

  .proof h3 {
    margin: 0;
    font-size: clamp(26px, 2.4vw, 40px);
    font-weight: 700;
    letter-spacing: -.02em;
  }

  .proof .foot {
    margin-top: auto;
    font-size: 16px;
    color: var(--dim);
    font-family: var(--mono);
  }

  /* ---------- KPIs ---------- */

  .kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 48px; }

  .kpi {
    display: flex;
    flex-direction: column;
    gap: 14px;
    border-top: 3px solid var(--cyan);
    padding-top: 24px;
  }

  .kpi .val {
    font-size: clamp(64px, 7vw, 124px);
    line-height: 1;
    font-weight: 700;
    letter-spacing: -.04em;
  }

  /* ---------- demo grid (Prototypen/Demos) ---------- */

  .demo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

  .demo-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-top: 3px solid var(--cyan);
    padding: 28px 22px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 160px;
  }

  .demo-who {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--dim);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--muted);
  }

  .demo-name { font-size: clamp(18px, 1.6vw, 24px); font-weight: 500; text-wrap: pretty; }

  @media (max-width: 1100px) { .demo-grid { grid-template-columns: 1fr 1fr; } }
  @media (max-width: 760px) { .demo-grid { grid-template-columns: 1fr; } }

  /* ---------- agenda rail (recurring per-item marker) ---------- */

  .agenda-rail {
    position: fixed;
    top: 32px;
    right: 32px;
    z-index: 40;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: rgba(12, 34, 41, .82);
    border: 1px solid var(--line);
    opacity: 0;
    transition: opacity .35s ease;
    pointer-events: none;
  }

  .agenda-rail.is-active { opacity: 1; }

  .agenda-rail .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 10px rgba(0, 212, 224, .8);
    flex: none;
  }

  .agenda-rail .txt {
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: .08em;
    color: var(--muted);
    white-space: nowrap;
  }

  .agenda-rail .txt b { color: var(--text); font-weight: 500; }

  .agenda-ticks {
    position: fixed;
    top: 50%;
    right: 14px;
    transform: translateY(-50%);
    z-index: 40;
    display: flex;
    flex-direction: column;
    gap: 12px;
    opacity: 0;
    transition: opacity .35s ease;
    pointer-events: none;
  }

  .agenda-ticks.is-active { opacity: 1; }

  .agenda-ticks .tick {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--line);
    transition: background .3s, transform .3s, box-shadow .3s;
  }

  .agenda-ticks .tick.is-done { background: var(--dim); }

  .agenda-ticks .tick.is-current {
    background: var(--cyan);
    transform: scale(1.8);
    box-shadow: 0 0 10px rgba(0, 212, 224, .8);
  }

  @media (max-width: 760px) {
    .agenda-rail, .agenda-ticks { display: none; }
  }

  .agenda-rail .qr-chip { background: #fff; padding: 3px; flex: none; }
  .agenda-rail .qr-chip img { width: 40px; height: 40px; display: block; }

  .qr-block { display: flex; align-items: center; gap: 24px; }
  .qr-block .qr-chip { background: #fff; padding: 8px; flex: none; }
  .qr-block .qr-chip img { width: 120px; height: 120px; display: block; }
  .qr-block-copy { color: var(--muted); font-size: 16px; max-width: 420px; }
  .qr-block-copy .eyebrow { margin-bottom: 6px; }

  /* ---------- word cloud ---------- */

  .cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 18px 34px;
    align-items: baseline;
    max-width: 1500px;
  }

  .cloud span { display: inline-block; }

  /* ---------- programm / agenda ---------- */

  .agenda { display: flex; flex-direction: column; max-width: 1200px; }

  .agenda-row {
    display: grid;
    grid-template-columns: 90px 160px 1fr 56px;
    align-items: baseline;
    gap: 24px;
    padding: 15px 0;
    border-top: 1px solid var(--line);
    font-size: clamp(18px, 1.6vw, 26px);
  }

  .agenda:last-child .agenda-row:last-child,
  .agenda .agenda-row:last-child { border-bottom: 1px solid var(--line); }

  .agenda-time { color: var(--cyan); font-size: 16px; }
  .agenda-phase { font-size: 14px; }
  .agenda-who { color: var(--dim); font-size: .68em; }
  .agenda-dur { color: var(--dim); font-size: 16px; text-align: right; }

  @media (max-width: 760px) {
    .agenda-row { grid-template-columns: 60px 1fr 44px; grid-template-areas: "time what dur" ". phase ."; }
    .agenda-phase { display: none; }
  }

  /* ---------- future questions ---------- */

  .questions { display: flex; flex-direction: column; }

  .question {
    padding: 28px 0;
    border-top: 1px solid var(--line);
    font-size: clamp(24px, 2.2vw, 36px);
    font-weight: 500;
    text-wrap: pretty;
  }

  .questions .question:last-child { border-bottom: 1px solid var(--line); }

  /* ---------- poll rows (shared by all 4 interactive slides) ---------- */

  .poll-row { display: flex; align-items: center; gap: 20px; margin-top: 12px; }
  .poll-label { flex: 1; }
  .poll-bar { width: 160px; height: 8px; background: var(--line); flex: none; }
  .poll-bar-fill { display: block; height: 100%; width: 0%; background: var(--cyan); transition: width .5s ease; }
  .poll-count { width: 44px; text-align: right; font-family: var(--mono); font-size: 16px; color: var(--dim); flex: none; }

  @media (max-width: 1100px) { .poll-bar { width: 100px; } }
  @media (max-width: 760px) {
    .poll-row { flex-wrap: wrap; }
    .poll-bar { width: 100%; order: 3; }
    .poll-count { order: 4; }
  }

  /* ---------- time capsule ---------- */

  .capsule { position: relative; display: grid; grid-template-columns: 1fr 420px; gap: 64px; align-items: start; }

  .theses { display: flex; flex-direction: column; transition: filter .8s ease, opacity .8s ease; }

  .thesis {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 22px;
    align-items: baseline;
    padding: 20px 0;
    border-top: 1px solid var(--line);
    font-size: clamp(20px, 1.9vw, 30px);
  }

  .theses .thesis:last-child { border-bottom: 1px solid var(--line); }
  .thesis .n { font-size: 34px; font-weight: 700; color: var(--cyan); }

  .capsule-box {
    background: var(--panel);
    border: 1px solid var(--line);
    padding: 36px;
    display: flex;
    flex-direction: column;
    gap: 22px;
  }

  .capsule-state {
    font-family: var(--mono);
    font-size: 15px;
    letter-spacing: .14em;
    color: var(--cyan);
  }

  .countdown {
    font-family: var(--mono);
    font-size: clamp(30px, 3vw, 52px);
    font-weight: 500;
    letter-spacing: -.02em;
    color: var(--text);
    font-variant-numeric: tabular-nums;
  }

  .capsule-box .until { font-size: 18px; color: var(--muted); }

  .capsule-counts {
    display: flex; flex-wrap: wrap; gap: 6px 24px;
    font-family: var(--mono); font-size: 15px; color: var(--muted);
    border-top: 1px solid var(--line); padding-top: 18px;
  }
  .capsule-counts b { color: var(--text); font-weight: 500; font-variant-numeric: tabular-nums; }

  .seal-btn {
    margin-top: 8px;
    background: var(--cyan);
    color: var(--bg);
    border: none;
    padding: 18px 26px;
    font-family: var(--sans);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -.01em;
    cursor: pointer;
    transition: background .2s;
  }

  .seal-btn:hover { background: var(--cyan-hi); }
  .seal-btn:focus-visible { outline: 2px solid var(--cyan-hi); outline-offset: 3px; }

  /* ---------- outro ---------- */

  .thanks {
    font-size: clamp(90px, 11vw, 190px);
    line-height: .92;
    font-weight: 700;
    letter-spacing: -.045em;
    color: var(--cyan);
  }

  .thanks-sub {
    font-size: clamp(24px, 2.4vw, 40px);
    color: var(--muted);
    max-width: 1100px;
    text-wrap: pretty;
  }

  /* ---------- motion ---------- */

  [data-reveal] {
    opacity: 0;
    transform: translateY(38px);
    transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1);
    will-change: opacity, transform;
  }

  [data-reveal].is-in { opacity: 1; transform: none; }

  [data-cloud] {
    opacity: 0;
    transform: scale(.7);
    transition: opacity .5s ease, transform .5s cubic-bezier(.2, .9, .3, 1.2);
  }

  [data-cloud].is-in { opacity: 1; transform: none; }

  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    [data-reveal], [data-cloud] { opacity: 1; transform: none; transition: none; }
    .scroll-hint { animation: none; }
  }

  /* ---------- responsive ---------- */

  @media (max-width: 1100px) {
    .capsule, .tl-body { grid-template-columns: 1fr; gap: 40px; }
    .proofs, .kpis { grid-template-columns: 1fr 1fr; }
    .watermark { font-size: 240px; }
  }

  @media (max-width: 760px) {
    section { padding: 72px 24px; }
    .s-edge { padding: 40px 24px; gap: 48px; }
    .grid-2, .proofs, .kpis { grid-template-columns: 1fr; }
    .years { flex-wrap: wrap; }
    .years button { flex: 0 0 auto; min-width: 64px; }
    .stat-row { gap: 32px; }
    .bar, .bar-top { flex-wrap: wrap; gap: 16px; }
    .watermark { display: none; }
  }