/* ==========================================================================
   Philosophy — five positions, one rhythm
   hero · 01 means · 02 reality · 03 simple · 04 AI · 05 after launch ·
   think/build/measure/learn/repeat · closing
   ========================================================================== */

/* ==========================================================================
   Hero — the lines fan apart as the page starts moving
   ========================================================================== */
.ph-hero { position: relative; isolation: isolate; display: flex; flex-direction: column; min-height: 100svh; overflow: hidden; padding: calc(var(--header-h) + clamp(2rem, 7vh, 5rem)) 0 clamp(1.75rem, 4vh, 3rem); background: var(--black); color: var(--white); }
.ph-hero__glow { position: absolute; left: 12%; right: -10%; bottom: -36%; z-index: -1; height: 92%; background: radial-gradient(34% 44% at 38% 50%, rgb(107 63 212 / 0.4), transparent 70%), radial-gradient(30% 42% at 74% 44%, rgb(58 126 246 / 0.32), transparent 70%); pointer-events: none; }
.ph-hero__inner { display: flex; flex: 1; flex-direction: column; }
.ph-hero__label { display: flex; align-items: center; gap: 1.25rem; font-size: var(--fs-small); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: rgb(255 255 255 / 0.5); }
.ph-hero__label span:first-child { color: var(--white); }
.ph-hero__label span + span::before { content: ""; display: inline-block; width: 2rem; height: 1px; margin-right: 1.25rem; background: currentColor; vertical-align: middle; }
.ph-hero__title { margin-block: auto; padding-block: clamp(2.5rem, 7vh, 5rem); font-size: clamp(2.9rem, 0.6rem + 8.8vw, 11.5rem); font-weight: 700; line-height: 0.92; letter-spacing: -0.06em; }
.ph-hero__title .mask { display: block; width: fit-content; padding-bottom: 0.18em; margin-bottom: -0.18em; }
.ph-hero__foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 1.5rem 3rem; }
.ph-hero__lead { max-width: 30em; font-size: clamp(1.05rem, 0.9rem + 0.5vw, 1.5rem); line-height: 1.4; letter-spacing: -0.02em; color: rgb(255 255 255 / 0.7); }
.ph-hero__next { display: inline-flex; align-items: center; gap: 0.9rem; padding-bottom: 0.35rem; border-bottom: 1px solid rgb(255 255 255 / 0.3); font-size: var(--fs-small); font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; transition: border-color 0.35s; }
.ph-hero__next svg { width: 1.3rem; height: 0.65rem; rotate: 90deg; transition: translate 0.5s var(--ease-out); }
.ph-hero__next:is(:hover, :focus-visible) { border-color: var(--white); }
.ph-hero__next:is(:hover, :focus-visible) svg { translate: 0 0.25rem; }

@media (prefers-reduced-motion: no-preference) {
  .js .ph-hero__title .mask > span { transform: translate3d(0, 110%, 0); }
  .is-loaded .ph-hero__title .mask > span { transform: none; transition: transform 1.4s var(--ease-out) calc(var(--d) * 150ms + 150ms); }
  @supports (animation-timeline: scroll()) and (animation-range: entry) {
    /* each line drifts at its own rate as the page leaves the hero — starts at rest, so the load animation still lands square */
    .ph-hero__title .mask > span { animation: ph-drift linear both; animation-timeline: scroll(root); animation-range: 0 100vh; }
    .ph-hero__title { animation: ph-lift linear both; animation-timeline: scroll(root); animation-range: 10vh 90vh; }
    @keyframes ph-drift { from { translate: 0 0; } to { translate: calc(var(--drift, 1) * 2.5vw) 0; } }
    @keyframes ph-lift { to { opacity: 0.25; } }
  }
}

/* ==========================================================================
   Shared section frame
   ========================================================================== */
.ph { padding-block: clamp(4.5rem, 9vw, 11rem); }
.ph--a, .ph--c, .ph--e { background: var(--off-white); color: var(--black); }
.ph--e { overflow-x: clip; } /* the timeline runs off the page on purpose */
.ph--b, .ph--d { background: var(--black); color: var(--white); }
.ph__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; gap: clamp(1.5rem, 3vw, 2.5rem) clamp(2rem, 6vw, 8rem); }
.ph__num { grid-column: 1 / -1; font-size: clamp(2.5rem, 1.2rem + 4.4vw, 6.5rem); font-weight: 700; line-height: 1; letter-spacing: -0.05em; color: transparent; -webkit-text-stroke: 1.5px rgb(0 0 0 / 0.3); }
.ph--b .ph__num, .ph--d .ph__num { -webkit-text-stroke-color: rgb(255 255 255 / 0.32); }
.ph__title { font-size: clamp(2.3rem, 0.9rem + 4.6vw, 6.5rem); font-weight: 700; line-height: 0.94; letter-spacing: -0.055em; }
.ph__title .mask { display: block; width: fit-content; padding-bottom: 0.14em; margin-bottom: -0.14em; }
.ph__text { align-self: end; }
.ph__lead { font-size: clamp(1.25rem, 0.95rem + 1.1vw, 2.15rem); line-height: 1.25; letter-spacing: -0.03em; }
.ph__text p:not(.ph__lead) { margin-top: 1.25rem; font-size: clamp(1rem, 0.9rem + 0.35vw, 1.2rem); line-height: 1.6; color: #555; }
.ph--b .ph__text p:not(.ph__lead), .ph--d .ph__text p:not(.ph__lead) { color: rgb(255 255 255 / 0.62); }

/* ==========================================================================
   01 · where technology sits
   ========================================================================== */
.means { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1rem, 2.5vw, 2.5rem); margin-top: clamp(3rem, 6vw, 6rem); padding-top: clamp(1.5rem, 2.5vw, 2.5rem); border-top: 1px solid var(--black); }
.means__step { position: relative; display: grid; align-content: start; gap: 0.6rem; }
.means__step b { font-size: var(--fs-micro); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: #8a8a8a; }
.means__step span { font-size: clamp(1.25rem, 0.9rem + 1.2vw, 2.4rem); font-weight: 600; line-height: 1.05; letter-spacing: -0.04em; }
.means__step--mid b { color: var(--blue); }
.means__step--mid span { font-size: clamp(1rem, 0.85rem + 0.5vw, 1.4rem); color: #9a9a9a; }
.means__step + .means__step::before { content: ""; position: absolute; left: calc(-1 * clamp(1rem, 2.5vw, 2.5rem)); top: 0.4rem; width: clamp(0.6rem, 1.6vw, 1.6rem); height: 1px; background: rgb(0 0 0 / 0.3); }

/* ==========================================================================
   02 · build for reality
   ========================================================================== */
.real { grid-column: 1 / -1; margin-top: clamp(3rem, 6vw, 6rem); border-top: 1px solid rgb(255 255 255 / 0.5); }
.real__row { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); align-items: baseline; gap: 0.6rem clamp(2rem, 6vw, 7rem); padding-block: clamp(1.5rem, 2.6vw, 2.5rem); border-bottom: 1px solid var(--border-dark); }
.real__row::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: linear-gradient(90deg, var(--purple), var(--blue)); transform: scaleX(0); transform-origin: 0 50%; transition: transform 1.1s var(--ease-out) calc(var(--i) * 120ms + 0.15s); }
.real__row.is-in::after { transform: none; }
.real__row dt { font-size: clamp(1.4rem, 1rem + 1.5vw, 2.75rem); font-weight: 600; line-height: 1; letter-spacing: -0.04em; }
.real__row dd { font-size: clamp(1rem, 0.9rem + 0.3vw, 1.2rem); line-height: 1.55; color: rgb(255 255 255 / 0.62); }

/* ==========================================================================
   03 · clever vs clear
   ========================================================================== */
.paths { grid-column: 1 / -1; margin-top: clamp(3rem, 6vw, 5.5rem); }
.paths svg { width: 100%; height: auto; overflow: visible; }
.paths__tangle, .paths__clear { fill: none; stroke-linecap: round; stroke-dasharray: 1; stroke-dashoffset: 1; }
.paths__tangle { stroke: rgb(0 0 0 / 0.35); stroke-width: 2; }
.paths__clear { stroke: var(--blue); stroke-width: 3; }
.paths__dot { fill: rgb(0 0 0 / 0.35); }
.paths__dot--on { fill: var(--blue); }
.paths__label { font-size: 13px; font-weight: 600; letter-spacing: 2px; fill: #8a8a8a; }
.paths__label--on { fill: var(--blue); }
.paths figcaption { max-width: 32em; margin-top: 1.25rem; font-size: clamp(1rem, 0.9rem + 0.3vw, 1.2rem); line-height: 1.5; color: #5e5e5e; }

@media (prefers-reduced-motion: no-preference) {
  .paths.is-in .paths__tangle { stroke-dashoffset: 0; transition: stroke-dashoffset 2.4s var(--ease-out); }
  .paths.is-in .paths__clear { stroke-dashoffset: 0; transition: stroke-dashoffset 1s var(--ease-out) 0.5s; }
}
@media (prefers-reduced-motion: reduce) {
  .paths__tangle, .paths__clear { stroke-dashoffset: 0; }
}

/* ==========================================================================
   04 · AI
   ========================================================================== */
.ai { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 clamp(1.5rem, 3vw, 3rem); margin-top: clamp(3rem, 6vw, 6rem); }
.ai__item a { position: relative; display: grid; align-content: start; gap: 0.55rem; padding: clamp(1.5rem, 2.4vw, 2.25rem) 0; border-top: 1px solid rgb(255 255 255 / 0.35); }
.ai__item a::after { content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 2px; background: linear-gradient(90deg, var(--purple), var(--blue)); transform: scaleX(0); transform-origin: 0 50%; transition: transform 0.8s var(--ease-out); }
.ai__item b { font-size: var(--fs-micro); font-weight: 600; letter-spacing: 0.14em; color: var(--blue-bright); }
.ai__item h3 { font-size: clamp(1.3rem, 1rem + 1vw, 2rem); font-weight: 600; letter-spacing: -0.035em; transition: color 0.35s; }
.ai__item p { max-width: 24em; font-size: 0.98rem; line-height: 1.5; color: rgb(255 255 255 / 0.6); }
.ai__go { position: absolute; right: 0; top: clamp(1.5rem, 2.4vw, 2.25rem); display: grid; place-items: center; width: 2.25rem; aspect-ratio: 1; border-radius: 50%; border: 1px solid rgb(255 255 255 / 0.25); }
.ai__go svg { width: 40%; height: 20%; rotate: -45deg; transition: rotate 0.6s var(--ease-out); }
.ai__item a:is(:hover, :focus-visible) h3 { color: var(--blue-bright); }
.ai__item a:is(:hover, :focus-visible)::after { transform: none; }
.ai__item a:is(:hover, :focus-visible) .ai__go { background: var(--white); border-color: var(--white); color: var(--black); }
.ai__item a:is(:hover, :focus-visible) .ai__go svg { rotate: 0deg; }
.ai__item a:focus-visible { outline-offset: -2px; }
.ai__foot { grid-column: 1 / -1; margin-top: clamp(2rem, 4vw, 3.5rem); font-size: clamp(1.05rem, 0.9rem + 0.5vw, 1.5rem); letter-spacing: -0.02em; color: rgb(255 255 255 / 0.7); }
@media (hover: hover) and (pointer: fine) {
  .ai__go { opacity: 0; transform: scale(0.6); transition: opacity 0.4s var(--ease-soft), transform 0.6s var(--ease-out), background-color 0.35s, border-color 0.35s, color 0.35s; }
  .ai__item a:is(:hover, :focus-visible) .ai__go { opacity: 1; transform: none; }
}

/* ==========================================================================
   05 · after launch — a line that keeps going
   ========================================================================== */
.after { --n: 5; grid-column: 1 / -1; position: relative; display: grid; grid-template-columns: repeat(var(--n), minmax(0, 1fr)); gap: clamp(1rem, 2vw, 2rem); margin-top: clamp(4rem, 7vw, 7rem); padding-top: 2.75rem; }
.after::before, .after::after { content: ""; position: absolute; left: 0; right: -6%; top: 0.45rem; height: 1px; background: rgb(0 0 0 / 0.18); }
.after::after { height: 2px; margin-top: -0.5px; background: linear-gradient(90deg, var(--purple), var(--blue)); transform: scaleX(0); transform-origin: 0 50%; }
.after__step { position: relative; }
.after__step::before { content: ""; position: absolute; left: 0; top: calc(-2.75rem + 0.45rem - 5.5px); width: 11px; height: 11px; border-radius: 50%; background: var(--off-white); border: 1.5px solid var(--black); transition: background-color 0.5s, border-color 0.5s; transition-delay: calc(var(--i) * 140ms + 0.35s); }
.after__step.is-in::before { background: var(--blue); border-color: var(--blue); }
.after__k { display: block; font-size: clamp(1.15rem, 0.95rem + 0.7vw, 1.8rem); font-weight: 600; line-height: 1.05; letter-spacing: -0.035em; }
.after__step p { margin-top: 0.6rem; font-size: 0.95rem; line-height: 1.5; color: #5e5e5e; }

@media (prefers-reduced-motion: no-preference) {
  .after:has(.after__step.is-in)::after { transform: none; transition: transform 1.6s var(--ease-out); }
  @supports (animation-timeline: view()) and (animation-range: entry) {
    .after::after { transition: none; animation: after-fill linear both; animation-timeline: view(); animation-range: entry 30% cover 60%; }
    @keyframes after-fill { from { transform: scaleX(0); } to { transform: none; } }
  }
}

/* ==========================================================================
   Think. Build. Measure. Learn. Repeat.
   ========================================================================== */
.beats { background: var(--black); color: var(--white); padding-block: clamp(5rem, 10vw, 12rem); }
.beats__list { position: relative; display: grid; justify-items: start; gap: clamp(0.25rem, 1vw, 1rem); }
.beats__list::before { content: ""; position: absolute; left: clamp(-3rem, -2.5vw, -1.25rem); top: 0.6em; bottom: 0.6em; width: 1px; border-left: 1px dashed rgb(255 255 255 / 0.28); }
.beats__list::after { content: ""; position: absolute; left: clamp(-3rem, -2.5vw, -1.25rem); top: 0.6em; width: 0.5rem; height: 0.5rem; border-left: 1px solid rgb(255 255 255 / 0.5); border-top: 1px solid rgb(255 255 255 / 0.5); translate: -50% 0; rotate: 45deg; }
.beat { position: relative; }
.beat:nth-child(2) { margin-left: clamp(1rem, 6vw, 7rem); }
.beat:nth-child(3) { margin-left: clamp(2rem, 12vw, 14rem); }
.beat:nth-child(4) { margin-left: clamp(1rem, 6vw, 7rem); }
.beat__w { display: block; font-size: clamp(2.8rem, 1rem + 8.6vw, 10.5rem); font-weight: 700; line-height: 0.96; letter-spacing: -0.06em; color: transparent; -webkit-text-stroke: 1.5px rgb(255 255 255 / 0.35); }
.beat__w--fill { position: absolute; inset: 0; -webkit-text-stroke: 0; background: var(--grad-accent); -webkit-background-clip: text; background-clip: text; clip-path: inset(0 100% 0 0); }
.beat.is-in .beat__w--fill { clip-path: inset(0 0 0 0); transition: clip-path 1.1s var(--ease-in-out) calc(var(--i) * 90ms); }
.beats__note { max-width: 26em; margin-top: clamp(2.5rem, 5vw, 4.5rem); font-size: clamp(1rem, 0.9rem + 0.3vw, 1.2rem); line-height: 1.5; color: rgb(255 255 255 / 0.55); }

@media (prefers-reduced-motion: no-preference) {
  @supports (animation-timeline: view()) and (animation-range: entry) {
    /* each word fills as it crosses the middle of the screen */
    .beat__w--fill { transition: none; animation: beat-fill linear both; animation-timeline: view(); animation-range: entry 35% cover 55%; }
    @keyframes beat-fill { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
  }
}
@media (prefers-reduced-motion: reduce) {
  .beat__w--fill { clip-path: inset(0 0 0 0); }
}

.ph-cta .s-cta__text strong { font-weight: 600; color: var(--black); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 64em) {
  .ph__grid { grid-template-columns: 1fr; }
  .ai { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .after { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 3rem; }
  .after::before, .after::after { display: none; }
  .after__step { padding-top: 1.5rem; border-top: 1px solid rgb(0 0 0 / 0.16); }
  .after__step::before { top: -6px; }
  .beats__list::before, .beats__list::after { display: none; }
}

@media (max-width: 48em) {
  .means { grid-template-columns: 1fr; row-gap: 1.75rem; }
  .means__step + .means__step::before { left: 0; top: -0.9rem; width: 1px; height: 0.6rem; }
  .real__row { grid-template-columns: 1fr; }
  .ai { grid-template-columns: 1fr; }
  .after { grid-template-columns: 1fr; }
  .beat:nth-child(n) { margin-left: 0; }
}