/* =====================================================
   JCO MEDIA — PORTFOLIO  |  styles.css
   ===================================================== */
:root {
  --sf: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
        "Helvetica Neue", Helvetica, Arial, sans-serif;
  --serif: "Times New Roman", Times, serif;
  --bg: #000;
  --white: #ffffff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--sf);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
html { overflow-x: clip; scroll-behavior: smooth; }
body { overflow-x: clip; }

img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* Shared big section title (used by EXPERIENCE, SOFTWARES & AI TOOLS, WHAT I DO) */
.section-title-main {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  text-align: center;
  letter-spacing: 0.02em;
  color: #fff;
  line-height: 1.05;
}

/* =====================================================
   HERO
   ===================================================== */
.hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 0 2vh;
  overflow: hidden;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    #ffffff 0%,
    #ffffff 30%,
    #d8d8d8 56%,
    #6a6a6a 82%,
    #000000 100%);
  pointer-events: none;
  z-index: 0;
}

/* ── CSS custom props for hero geometry ─────────────────────────────
   PORTFOLIO font = 16.5vw, line-height 0.9, scaleY 1.35
   title rendered height ≈ 16.5vw × 0.9 × 1.35 = 20.05vw
   Avatar width clamped so it doesn't get huge on wide screens.
   Avatar center locked to PORTFOLIO bottom edge.
──────────────────────────────────────────────────────────────────── */
:root {
  --title-h:      calc(16.5vw * 0.9 * 1.35);
  --avatar-w:     clamp(170px, 18vw, 260px);
  --avatar-half:  calc(var(--avatar-w) / 2);
  --avatar-top:   calc(var(--title-h) - var(--avatar-half));
  --stack-h:      calc(var(--title-h) + var(--avatar-half));
}

/* PORTFOLIO title stack + overlapping avatar */
.hero-stack {
  position: relative;
  width: 100%;
  z-index: 2;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: clamp(6px, 1vw, 14px);
  padding-left: clamp(6px, 1vw, 14px);
  padding-right: clamp(6px, 1vw, 14px);
  padding-bottom: 0;
  min-height: var(--stack-h);
}

/* Elongated-vertical PORTFOLIO — scaleY is controlled by JS for rubberband effect */
.portfolio-title {
  font-family: var(--serif);
  font-weight: 700;
  color: #000;
  font-size: 16.5vw;
  line-height: 0.9;
  letter-spacing: -0.015em;
  text-align: center;
  white-space: nowrap;
  width: 100%;
  user-select: none;
  /* scaleY starts at 1.35 (stretched); JS lerps this back to 1.0 as you scroll.
     top origin means the text stays anchored at the top edge. */
  transform: scaleY(1.35);
  transform-origin: center top;
  opacity: 1;
  filter: none;
  will-change: transform;
  margin-top: 0;
}

/* CIRCULAR white halo behind avatar */
.avatar-halo {
  position: absolute;
  top: 0;
  left: 50%;
  width: calc(var(--avatar-w) * 2.2);
  aspect-ratio: 1 / 1;
  transform: translate(-50%, calc(var(--avatar-top) - var(--avatar-half)));
  background: radial-gradient(circle,
    rgba(255,255,255,1) 0%,
    rgba(255,255,255,0.85) 18%,
    rgba(255,255,255,0.55) 36%,
    rgba(255,255,255,0.28) 54%,
    rgba(255,255,255,0.1) 72%,
    rgba(255,255,255,0) 92%);
  border-radius: 50%;
  z-index: 2;
  pointer-events: none;
  filter: blur(28px);
}

/* Avatar — PORTFOLIO bottom locked to avatar center at all screen widths */
.profile-avatar {
  position: absolute;
  top: 0;
  left: 50%;
  /* translateY = avatar-top so avatar center sits exactly at title bottom */
  transform: translate(-50%, var(--avatar-top));
  width: var(--avatar-w);
  aspect-ratio: 1 / 1;
  border-radius: 32px;
  overflow: hidden;
  background: #bbb;
  z-index: 3;
  box-shadow: 0 20px 50px rgba(0,0,0,0.4);
  border: 3px solid rgba(255,255,255,0.9);
}
.profile-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.profile-avatar.no-img {
  background: linear-gradient(135deg, #888, #444);
}

/* Profile info (centered, right below avatar) */
.profile-info {
  position: relative;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  margin-top: 2px;
  color: #000;
  text-align: center;
}
.profile-name {
  font-size: clamp(1.6rem, 2.4vw, 2.1rem);
  font-weight: 900;
  color: #000;
  margin-bottom: 2px;
  letter-spacing: -0.02em;
}
.profile-role { font-size: clamp(0.95rem, 1.2vw, 1.05rem); font-weight: 600; color: #111; }
.profile-email { font-size: clamp(0.85rem, 1vw, 0.95rem); color: #333; margin-top: 2px; }
.open-work {
  font-size: clamp(0.85rem, 1vw, 0.95rem);
  color: #d11;
  font-weight: 700;
  margin-top: 6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.open-work .dot-red {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #d11;
  border-radius: 50%;
}

.cta-button {
  display: inline-block;
  background: #000;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: 999px;
  margin-top: 8px;
  transition: transform .2s ease, opacity .2s ease;
}
.cta-button.light {
  background: #fff;
  color: #000;
  border: 1px solid rgba(0,0,0,0.12);
  box-shadow: 0 4px 18px rgba(0,0,0,0.18);
}
.cta-button:hover { transform: scale(1.04); opacity: 0.95; }

/* Hello card — emphasizes on hover */
.hello-card {
  position: relative;
  z-index: 2;
  margin-top: 1.2vh;
  background: rgba(15,15,15,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 22px;
  padding: 22px 26px;
  width: min(720px, 88vw);
  color: #fff;
  transition: transform .35s cubic-bezier(.2,.7,.2,1),
              box-shadow .35s ease,
              border-color .35s ease;
  cursor: default;
}
.hello-card:hover,
.hello-card.touched {
  transform: translateY(-6px) scale(1.015);
  box-shadow: 0 30px 80px rgba(255,255,255,0.18),
              0 0 0 1px rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.22);
}
.hello-title { font-weight: 700; font-size: 1.45rem; margin-bottom: 10px; }
.hello-text { font-size: 0.95rem; line-height: 1.55; color: rgba(255,255,255,0.85); }
.hello-text strong { color: #fff; font-weight: 700; }

/* Scroll arrows — wider, close together, slow crossfade */
.scroll-arrows {
  margin-top: auto;
  padding-top: 2vh;
  padding-bottom: 2vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 2;
  color: #fff;
}
.arrow {
  width: 56px;
  height: 18px;
  opacity: 0;
  animation: arrowFade 2.6s ease-in-out infinite;
}
.arrow.a1 { animation-delay: 0s; }
.arrow.a2 { animation-delay: 0.7s; margin-top: -8px; }
@keyframes arrowFade {
  0%, 100% { opacity: 0; transform: translateY(-3px); }
  50%      { opacity: 1; transform: translateY(0); }
}

/* =====================================================
   EXPERIENCE
   Layout: [year col | dot col | content col]
   Dots horizontally aligned with year labels (both top-aligned to same baseline)
   Line runs through dot column center, stops at last dot
   ===================================================== */
.experience {
  position: relative;
  width: 100%;
  padding: 12vh 5vw 12vh;
  max-width: 100%;
  margin: 0 auto;
}

.experience .section-title-main {
  margin-bottom: 8vh;
}

.timeline {
  position: relative;
  /* Perfectly centered, symmetric columns ensure center alignment */
  width: min(720px, 92vw);
  margin: 0 auto;
}

/* Vertical line at the exact center of the timeline (between year and content) */
.timeline-line {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 18px;
  bottom: 0;
  width: 2px;
  background: rgba(255,255,255,0.2);
}
.timeline-line-fill {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 0;
  background: #fff;
  transition: height .15s linear;
}

.year-block {
  position: relative;
  display: grid;
  /* Symmetric 1fr | 40px dot | 1fr — dot sits dead-center, whole timeline centers on page */
  grid-template-columns: 1fr 40px 1fr;
  gap: 0;
  align-items: start;
  margin-bottom: 40px;
  color: rgba(255,255,255,0.2);
  transition: color .35s ease;
}
.year-block.active { color: #fff; }

.year-label {
  grid-column: 1;
  font-weight: 800;
  font-size: clamp(2rem, 3.2vw, 2.8rem);
  text-align: right;
  line-height: 1;
  letter-spacing: -0.02em;
  padding-right: 24px;
  /* baseline aligns with dot top */
}
.year-marker {
  grid-column: 2;
  display: flex;
  justify-content: center;
  /* Pull the dot up so its center is at the same height as the year label's cap-height */
  padding-top: 8px;
  position: relative;
  z-index: 2;
}
.dot {
  display: block;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.5);
  background: #000;
  transition: background .3s ease, border-color .3s ease, transform .3s ease;
  box-sizing: border-box;
}
.year-block.active .dot {
  background: #fff;
  border-color: #fff;
  transform: scale(1.1);
}
.year-content {
  grid-column: 3;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 6px;
  padding-left: 22px;
}
.job-title { font-size: clamp(1.05rem, 1.4vw, 1.25rem); font-weight: 700; }
.job-role  { font-size: clamp(0.85rem, 1vw, 0.95rem); opacity: 0.9; margin-top: 2px; font-weight: 400; line-height: 1.3; }

/* =====================================================
   TOOLS — strong horizontal white gradient band
   ===================================================== */
.tools-wrap {
  position: relative;
  width: 100%;
  padding: 14vh 0 14vh;
  overflow: hidden;
}
.tools-gradient {
  position: absolute;
  inset: 0;
  /* Thick white band across the middle — extends further vertically */
  background: linear-gradient(180deg,
    #000 0%,
    #000 4%,
    #555 12%,
    #c8c8c8 22%,
    #ffffff 32%,
    #ffffff 68%,
    #c8c8c8 78%,
    #555 88%,
    #000 96%,
    #000 100%);
  pointer-events: none;
  z-index: 0;
}
.tools {
  position: relative;
  z-index: 1;
  padding: 0 5vw;
  max-width: 1000px;
  margin: 0 auto;
}
.tools-title {
  color: #000;
  margin-bottom: 7vh;
}

.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .9s ease, transform .9s ease;
}
.fade-up.in-view { opacity: 1; transform: translateY(0); }
/* Crossfade back up when scrolled past — title retreats upward */
.fade-up.past-view {
  opacity: 0;
  transform: translateY(-40px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1);
}

.tools-row {
  display: flex;
  justify-content: center;
  flex-wrap: nowrap;            /* never wrap — keep 2 rows only */
  gap: clamp(8px, 1.2vw, 18px);
  margin-bottom: 38px;
}
.tools-row:last-child { margin-bottom: 0; }

.tool-card {
  width: clamp(50px, 6vw, 90px);
  aspect-ratio: 1 / 1;
  height: auto;
  background: none;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: transform .25s ease;
  box-shadow: none;
  flex-shrink: 1;
}
.tool-card img { width: 100%; height: 100%; object-fit: cover; border-radius: 16px; }
.tool-card .tool-name {
  position: absolute;
  bottom: -22px;
  font-size: 0.75rem;
  color: #000;
  font-weight: 700;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity .25s ease, transform .25s ease;
  pointer-events: none;
}
.tool-card:hover, .tool-card.touched {
  transform: scale(1.15);
}
.tool-card:hover .tool-name, .tool-card.touched .tool-name {
  opacity: 1;
  transform: translateY(0);
}

/* =====================================================
   WHAT I DO — scrollytelling
   ===================================================== */
.contents {
  position: relative;
  padding-top: 0;
}
.contents-title {
  margin: 0;
  padding: 10vh 0 2vh;
}

.scroll-section {
  position: relative;
  height: 350vh;
}
.sticky-stage {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100dvh;
  width: 100%;
  /* Track goes DEAD CENTER of viewport; title/desc are absolutely placed above */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow-x: clip;
  overflow-y: visible;
  padding: 0;
}

/* Text (title + desc + disclaimer) absolutely positioned above the centered track */
.sticky-stage > .sub-title,
.sticky-stage > .sub-desc,
.sticky-stage > .sub-disclaimer {
  position: absolute;
  left: 50%;
  width: min(720px, 88vw);
  text-align: center;
}
/* Cards are centered at 50% viewport. Text sits in the top quarter above them. */
.sticky-stage > .sub-title {
  top: clamp(50px, 7vh, 100px);
}
.sticky-stage > .sub-desc {
  top: calc(clamp(50px, 7vh, 100px) + clamp(44px, 5.5vh, 72px));
}
/* Disclaimer sits right below desc — tighter gap, well above cards */
.sticky-stage > .sub-disclaimer {
  top: calc(clamp(50px, 7vh, 100px) + clamp(44px, 5.5vh, 72px) + clamp(42px, 5.2vh, 66px));
}

/* Subsection title — fades up from below */
.sub-title {
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  font-weight: 800;
  margin: 0;
  color: #fff;
  opacity: 0;
  transform: translate(-50%, 30px);
  transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1);
  letter-spacing: -0.01em;
}
.sticky-stage.active .sub-title {
  opacity: 1;
  transform: translate(-50%, 0);
}

.track-wrap {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  width: 100%;
  height: 58vh;
  height: 58dvh;
  /* overflow: visible so cards are NOT clipped — rounded corners stay intact */
  overflow: visible;
  perspective: 1600px;
  /* Track fades from 25% to 100% as section becomes active */
  opacity: 0.25;
  transition: opacity .6s ease;
}
.sticky-stage.active .track-wrap {
  opacity: 1;
}
.track {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  height: 100%;
  will-change: transform;
  transform-style: preserve-3d;
}

.edge {
  position: absolute;
  top: 0; bottom: 0;
  width: 22%;
  pointer-events: none;
  z-index: 5;
}
.edge-left {
  left: 0;
  background: linear-gradient(90deg,
    rgba(0,0,0,0.95) 0%,
    rgba(0,0,0,0.7) 40%,
    rgba(0,0,0,0) 100%);
}
.edge-right {
  right: 0;
  background: linear-gradient(270deg,
    rgba(0,0,0,0.95) 0%,
    rgba(0,0,0,0.7) 40%,
    rgba(0,0,0,0) 100%);
}

/* Cards (vertical 9:16 default) */
.card {
  flex: 0 0 auto;
  width: clamp(220px, 24vw, 340px);
  aspect-ratio: 9 / 16;
  margin: 0 clamp(30px, 5vw, 70px);
  background: linear-gradient(180deg, #3a3a3a, #1a1a1a);
  /* Very rounded like iOS app icons / reference design — stays visibly rounded at scale(1) */
  border-radius: clamp(36px, 3.6vw, 56px);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  position: relative;
  box-shadow: 0 25px 60px rgba(0,0,0,0.55);
  transition: transform .35s cubic-bezier(.2,.7,.2,1),
              opacity .35s ease;
  transform: scale(0.78);
  opacity: 0.25;
}
.card.is-active {
  transform: scale(1) rotateY(0deg);
  opacity: 1;
  z-index: 4;
}
.card.is-left  { transform: scale(0.78) rotateY(22deg); opacity: 0.35; }
.card.is-right { transform: scale(0.78) rotateY(-22deg); opacity: 0.35; }

.card img, .card video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
}

/* Horizontal (16:9) cards - smaller relative radius */
.track.horizontal .card {
  aspect-ratio: 16 / 9;
  width: clamp(360px, 52vw, 780px);
  border-radius: clamp(28px, 2.4vw, 40px);
}
.card.placeholder::after {
  content: attr(data-label);
  position: absolute;
  font-size: 1.5rem;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}
.card.placeholder img,
.card.placeholder video { display: none; }

/* Description text BELOW title, above media cards */
.sub-desc {
  max-width: min(720px, 88vw);
  margin: 0;
  font-size: clamp(0.88rem, 1.1vw, 1rem);
  line-height: 1.7;
  color: rgba(255,255,255,0.8);
  opacity: 0;
  transform: translate(-50%, 30px);
  transition: opacity .6s ease .1s, transform .6s cubic-bezier(.2,.7,.2,1) .1s;
}
.sticky-stage.active .sub-desc { opacity: 1; transform: translate(-50%, 0); }

.sub-disclaimer {
  max-width: min(720px, 88vw);
  margin: 0;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.45);
  font-style: italic;
  opacity: 0;
  transform: translate(-50%, 30px);
  transition: opacity .6s ease .15s, transform .6s cubic-bezier(.2,.7,.2,1) .15s;
}
.sticky-stage.active .sub-disclaimer { opacity: 1; transform: translate(-50%, 0); }

/* =====================================================
   FOOTER — short, white gradient, above sticky stages
   ===================================================== */
.footer {
  position: relative;
  z-index: 10;
  width: 100%;
  min-height: 50vh;
  min-height: 50dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  padding: 0;
  background: #000;
}
.footer-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    rgba(0,0,0,1) 0%,
    rgba(50,50,50,1) 8%,
    rgba(180,180,180,1) 22%,
    rgba(240,240,240,1) 40%,
    #ffffff 60%,
    #ffffff 100%);
  pointer-events: none;
  z-index: 0;
}
.footer-content {
  position: relative;
  z-index: 2;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 5vw 3vh;
  width: 100%;
  /* Crossfade up animation */
  opacity: 0;
  transform: translateY(50px);
  transition: opacity .9s ease, transform .9s cubic-bezier(.2,.7,.2,1);
}
.footer-content.in-view {
  opacity: 1;
  transform: translateY(0);
}
.footer-content.past-view {
  opacity: 0;
  transform: translateY(-40px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1);
}
.footer-tag {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  color: #000;
  font-weight: 700;
  margin-top: 6vh;
}
.footer-email {
  font-size: clamp(0.9rem, 1.2vw, 1.05rem);
  color: #333;
  margin-top: 6px;
}
.send-btn {
  margin-top: 18px;
  background: #000;
  color: #fff;
  border: none;
}
.back-to-top {
  margin-top: 4vh;
  background: rgba(0,0,0,0.08);
  color: #000;
  border: 1px solid rgba(0,0,0,0.18);
  border-radius: 999px;
  padding: 9px 18px;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: transform .2s ease, background .2s ease;
}
.back-to-top svg { width: 14px; height: 14px; }
.back-to-top:hover { transform: scale(1.05); background: rgba(0,0,0,0.15); }
.copyright {
  margin-top: 3vh;
  font-size: 0.78rem;
  color: rgba(0,0,0,0.55);
}

/* =====================================================
   MOBILE
   ===================================================== */
@media (max-width: 720px) {
  /* Avatar top edge = middle of PORTFOLIO text = title-h * 0.5
     stack-h = avatar-top + avatar full height */
  :root {
    --title-h:     calc(15.5vw * 0.9 * 1.6);
    --avatar-w:    42vw;
    --avatar-half: calc(var(--avatar-w) / 2);
    --avatar-top:  calc(var(--title-h) * 0.5);
    --stack-h:     calc(var(--avatar-top) + var(--avatar-w));
  }

  .portfolio-title {
    font-size: 15.5vw;
    transform: scaleY(1.6);
  }
  .avatar-halo {
    width: calc(var(--avatar-w) * 2.2);
    filter: blur(18px);
  }
  .profile-avatar {
    border-radius: 20px;
    border: 2px solid rgba(255,255,255,0.85);
    box-shadow: 0 14px 36px rgba(0,0,0,0.4);
  }

  /* Tight gap between avatar and name */
  .profile-info {
    margin-top: clamp(4px, 0.4vh, 8px);
  }

  .hero-stack {
    padding-top: clamp(6px, 1vw, 14px);
    padding-left: clamp(6px, 1vw, 14px);
    padding-right: clamp(6px, 1vw, 14px);
    padding-bottom: 0;
    min-height: var(--stack-h);
  }

  .hero-gradient {
    background: linear-gradient(180deg,
      #ffffff 0%,
      #ffffff 36%,
      #c8c8c8 60%,
      #555 82%,
      #000 100%);
  }
  .arrow { width: 44px; height: 14px; }

  /* Experience mobile — reorganize so line is centered through dots */
  .timeline-line { left: 110px; }
  .year-block {
    grid-template-columns: 90px 40px 1fr;
    margin-bottom: 32px;
    align-items: center; /* vertically center all three columns so year and dot line up */
  }
  .year-label {
    font-size: 1.6rem;
    padding-right: 16px;
    /* Align year text baseline with dot center */
    display: flex;
    align-items: flex-start;
    padding-top: 0;
    line-height: 1.1;
  }
  .year-content { padding-left: 16px; gap: 10px; align-self: start; }
  .year-marker {
    /* Dot perfectly centers to match year label first-line height */
    padding-top: 0;
    display: flex;
    align-items: flex-start;
    padding-top: 3px;
  }
  .dot { width: 18px; height: 18px; }
  .job-title { font-size: 1rem; }
  .job-role { font-size: 0.82rem; }

  /* Tools mobile */
  .tools-gradient {
    background: linear-gradient(180deg,
      #000 0%,
      #000 4%,
      #555 12%,
      #c8c8c8 22%,
      #ffffff 32%,
      #ffffff 68%,
      #c8c8c8 78%,
      #555 88%,
      #000 96%,
      #000 100%);
  }
  .tool-card { width: clamp(38px, 11vw, 64px); border-radius: 12px; }
  .tools-row { gap: clamp(6px, 1.5vw, 12px); margin-bottom: 34px; }

  /* Contents mobile — tight spacing, titles close to cards */
  .scroll-section { height: 280vh; }
  .sticky-stage { padding: 0; }
  .sub-title { margin-bottom: 1.2vh; font-size: 1.4rem; }
  .track-wrap { height: 54vh; }

  /* Mobile text positions — pushed down so gap between text and cards is balanced */
  .sticky-stage > .sub-title { top: clamp(60px, 10vh, 100px); }
  .sticky-stage > .sub-desc  { top: calc(clamp(60px, 10vh, 100px) + clamp(40px, 5.5vh, 65px)); }
  .sticky-stage > .sub-disclaimer { top: calc(clamp(60px, 10vh, 100px) + clamp(40px, 5.5vh, 65px) + clamp(56px, 7.5vh, 80px)); }

  .card { width: 58vw; margin: 0 18px; }
  .track.horizontal .card { width: 80vw; }
  .card.is-left  { transform: scale(0.7) rotateY(18deg); }
  .card.is-right { transform: scale(0.7) rotateY(-18deg); }

  .edge { width: 18%; }

  .sub-desc {
    font-size: 0.8rem;
    line-height: 1.5;
    margin-top: 1.6vh;
  }
  .sub-disclaimer { font-size: 0.65rem; }

  .footer { min-height: 44vh; }
  .footer-gradient {
    background: linear-gradient(180deg,
      rgba(0,0,0,1) 0%,
      rgba(60,60,60,1) 10%,
      rgba(190,190,190,1) 28%,
      #ffffff 55%,
      #ffffff 100%);
  }
}

@media (min-width: 1024px) {
  /* tool-card size is handled by clamp() above */
}

@media (prefers-reduced-motion: reduce) {
  .arrow { animation: none; opacity: 0.7; }
  .fade-up { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
  .card, .card.is-left, .card.is-right { transform: scale(1) !important; }
}