:root {
  --pink: #ff6fa8;
  --rose: #eb3d78;
  --blue: #72d8ff;
  --lavender: #b79bff;
  --mint: #8ee8cb;
  --gold: #ffd66b;
  --ink: #2e2239;
  --muted: #6a5577;
  --glass: rgba(255, 255, 255, 0.34);
  --line: rgba(255, 255, 255, 0.58);
  --shadow: 0 28px 90px rgba(102, 44, 94, 0.24);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100svh;
  overflow-x: hidden;
  color: var(--ink);
  font-family: "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
  background:
    radial-gradient(circle at 16% 10%, rgba(255, 214, 107, 0.48), transparent 25%),
    radial-gradient(circle at 88% 12%, rgba(114, 216, 255, 0.42), transparent 28%),
    radial-gradient(circle at 72% 78%, rgba(183, 155, 255, 0.34), transparent 26%),
    linear-gradient(135deg, #fff4f9 0%, #eefaff 36%, #f7efff 70%, #fff9e9 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.26) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.22) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(circle at 50% 24%, black, transparent 78%);
}

button, a {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.intro {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  min-height: 100svh;
  padding: clamp(14px, 3vw, 34px);
  background:
    radial-gradient(circle at 18% 20%, rgba(255, 214, 107, 0.64), transparent 22%),
    radial-gradient(circle at 82% 18%, rgba(114, 216, 255, 0.5), transparent 28%),
    radial-gradient(circle at 52% 88%, rgba(255, 111, 168, 0.42), transparent 26%),
    linear-gradient(135deg, #ffe7f3, #e7f8ff 42%, #f2e8ff 76%, #fffaf2);
  transition: opacity 950ms ease, transform 950ms ease, visibility 950ms;
}

.intro.hidden {
  opacity: 0;
  transform: scale(1.08);
  visibility: hidden;
  pointer-events: none;
}

.intro-stage {
  position: relative;
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(320px, 1fr);
  gap: clamp(16px, 4vw, 54px);
  align-items: center;
  width: min(1180px, 100%);
}

.intro-stage::before {
  content: "";
  position: absolute;
  inset: -28px;
  z-index: -1;
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 42px;
  background: linear-gradient(135deg, rgba(255,255,255,0.18), rgba(255,255,255,0.06));
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.intro-photo-stack {
  position: relative;
  min-height: 560px;
  perspective: 1100px;
}

.intro-photo-stack img {
  position: absolute;
  width: min(340px, 72vw);
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border: 12px solid rgba(255,255,255,0.82);
  border-radius: 22px;
  box-shadow: 0 26px 80px rgba(72, 35, 76, 0.27);
  animation: photoFloat 5s ease-in-out infinite;
}

.intro-photo-stack img:nth-child(1) {
  left: 6%;
  top: 2%;
  transform: rotate(-8deg);
}

.intro-photo-stack img:nth-child(2) {
  left: 24%;
  top: 19%;
  z-index: 2;
  width: min(390px, 76vw);
  transform: rotate(4deg);
  animation-delay: -1.4s;
}

.intro-photo-stack img:nth-child(3) {
  left: 3%;
  bottom: 0;
  transform: rotate(9deg);
  animation-delay: -2.8s;
}

.intro-card {
  position: relative;
  padding: clamp(28px, 5vw, 62px);
  border: 1px solid var(--line);
  border-radius: 34px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.72), rgba(255,255,255,0.32)),
    radial-gradient(circle at 90% 0%, rgba(255, 214, 107, 0.28), transparent 40%);
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px);
  text-align: left;
}

.mission-pill,
.intro-kicker,
.eyebrow {
  margin: 0 0 12px;
  color: #a92f68;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.mission-pill {
  display: inline-flex;
  padding: 9px 13px;
  border: 1px solid rgba(255,255,255,0.76);
  border-radius: 999px;
  background: rgba(255,255,255,0.44);
}

.intro h1,
.hero h2,
.section h2 {
  margin: 0;
  font-size: clamp(2.55rem, 7vw, 6.2rem);
  line-height: 0.92;
  letter-spacing: 0;
}

.type-line {
  min-height: 34px;
  margin: 24px 0 8px;
  color: #54405f;
  font-size: clamp(1rem, 2.4vw, 1.35rem);
  font-weight: 800;
}

.intro-reveal,
.intro-only {
  opacity: 0;
  transform: translateY(14px);
  animation: riseIn 800ms ease forwards;
}

.intro-reveal {
  animation-delay: 2.2s;
  font-size: clamp(1.5rem, 4vw, 2.7rem);
  font-weight: 1000;
}

.intro-only {
  animation-delay: 2.95s;
  color: var(--muted);
  font-weight: 800;
}

.intro-meter {
  position: absolute;
  right: 4%;
  bottom: -22px;
  width: min(330px, 78vw);
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,0.46);
  box-shadow: 0 18px 50px rgba(255, 111, 168, 0.22);
  backdrop-filter: blur(18px);
}

.intro-meter span {
  display: block;
  margin-bottom: 8px;
  color: #893158;
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.intro-meter b {
  display: block;
  width: 100%;
  height: 12px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--pink), var(--gold), var(--blue));
  animation: loadSmile 3.4s ease forwards;
}

.primary-btn,
.music-btn,
.icon-btn {
  min-height: 50px;
  border-radius: 999px;
  color: #50223c;
  background: linear-gradient(135deg, #fff, #ffe0ef 45%, #fff0b9);
  box-shadow: 0 15px 36px rgba(235, 61, 120, 0.24), inset 0 0 0 1px rgba(255,255,255,0.82);
  font-weight: 1000;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.primary-btn {
  padding: 15px 24px;
}

.primary-btn:hover,
.music-btn:hover,
.icon-btn:hover,
.topbar a:hover,
.promise-card:hover {
  transform: translateY(-3px) scale(1.02);
}

.gift-btn {
  margin-top: 20px;
  animation: pulseGift 1.75s ease-in-out infinite;
}

.experience {
  opacity: 0;
  transform: translateY(20px);
  transition: 850ms ease;
}

.experience.ready {
  opacity: 1;
  transform: none;
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 60;
  width: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--pink), var(--gold), var(--blue), var(--lavender));
  box-shadow: 0 0 20px rgba(255, 111, 168, 0.5);
}

.topbar {
  position: sticky;
  top: 12px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 8px;
  width: min(1160px, calc(100% - 24px));
  margin: 12px auto 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255,255,255,0.42);
  box-shadow: 0 14px 42px rgba(86, 58, 120, 0.13);
  backdrop-filter: blur(18px);
}

.topbar span {
  margin-right: auto;
  padding-left: 10px;
  font-weight: 1000;
}

.topbar a {
  padding: 10px 12px;
  border-radius: 999px;
  color: #69445c;
  font-size: 0.9rem;
  font-weight: 900;
  transition: 180ms ease;
}

.music-btn {
  padding: 10px 16px;
}

.icon-btn {
  width: 50px;
}

.section {
  position: relative;
  min-height: 100svh;
  padding: clamp(76px, 10vw, 126px) 18px;
}

.hero-grid,
.favorite-panel,
.agent-shell,
.smile-console,
.story-board {
  width: min(1160px, 100%);
  margin: 0 auto;
}

.hero-grid,
.favorite-panel,
.agent-shell,
.smile-console {
  display: grid;
  grid-template-columns: 1fr 0.92fr;
  gap: clamp(24px, 5vw, 60px);
  align-items: center;
}

.hero-copy p:last-of-type,
.favorite-panel p,
.agent-note,
.final-message,
.scan-card p,
.timeline p {
  font-size: clamp(1.05rem, 2.25vw, 1.5rem);
  line-height: 1.55;
}

.hero h3 {
  margin: 18px 0;
  color: #b7326a;
  font-family: "Segoe Script", "Bradley Hand ITC", cursive;
  font-size: clamp(2rem, 5vw, 4.2rem);
  font-weight: 700;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-chips span {
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,0.42);
  color: #71415d;
  font-weight: 900;
}

.photo-card {
  position: relative;
  margin: 0;
  padding: clamp(10px, 2vw, 16px);
  border: 1px solid rgba(255,255,255,0.74);
  border-radius: 28px;
  background: rgba(255,255,255,0.34);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
  transform-style: preserve-3d;
  transition: transform 180ms ease;
}

.photo-card::before {
  content: "";
  position: absolute;
  inset: -10px;
  z-index: -1;
  border-radius: 34px;
  background: linear-gradient(135deg, rgba(255,111,168,0.38), rgba(255,214,107,0.26), rgba(114,216,255,0.34));
  filter: blur(18px);
}

.photo-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 20px;
}

.photo-card figcaption {
  padding: 12px 4px 2px;
  color: #a92f68;
  font-family: "Segoe Script", "Bradley Hand ITC", cursive;
  font-size: clamp(2rem, 5vw, 3.6rem);
  text-align: center;
}

.section-heading {
  width: min(920px, 100%);
  margin: 0 auto 38px;
  text-align: center;
}

.balloon-field {
  display: grid;
  grid-template-columns: repeat(5, minmax(112px, 1fr));
  gap: 28px 18px;
  width: min(1060px, 100%);
  margin: 0 auto;
}

.balloon {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 178px;
  color: #fff;
  text-align: center;
  text-shadow: 0 2px 12px rgba(82, 28, 59, 0.42);
  background: transparent;
  animation: floaty var(--speed, 4s) ease-in-out infinite;
}

.balloon span {
  display: grid;
  place-items: center;
  width: 122px;
  height: 152px;
  padding: 18px;
  border-radius: 55% 55% 50% 50%;
  background: radial-gradient(circle at 35% 24%, rgba(255,255,255,0.62), transparent 18%), var(--balloon);
  box-shadow: 0 20px 40px rgba(110, 44, 84, 0.24);
  font-weight: 1000;
}

.balloon::after {
  content: "";
  position: absolute;
  bottom: 8px;
  left: 50%;
  width: 2px;
  height: 40px;
  background: rgba(102, 64, 92, 0.32);
}

.balloon.popped {
  animation: pop 360ms ease forwards;
}

.favorite {
  min-height: auto;
}

.favorite-panel,
.agent-shell,
.smile-console,
.story-board {
  padding: clamp(24px, 5vw, 50px);
  border: 1px solid var(--line);
  border-radius: 32px;
  background: rgba(255,255,255,0.38);
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px);
}

.favorite-balloon {
  display: grid;
  place-items: center;
  width: min(340px, 80vw);
  height: min(400px, 82vw);
  margin: auto;
  border-radius: 55% 55% 50% 50%;
  color: #fff;
  text-align: center;
  background:
    radial-gradient(circle at 35% 22%, rgba(255,255,255,0.74), transparent 18%),
    linear-gradient(145deg, #ff4f86, #b99cff 55%, #ffd978);
  box-shadow: 0 0 44px rgba(255, 217, 120, 0.82), 0 34px 100px rgba(255, 79, 134, 0.34);
  font-size: clamp(1.3rem, 4vw, 2.3rem);
  font-weight: 1000;
  animation: glowFloat 2.8s ease-in-out infinite;
}

.scan-card {
  padding: clamp(22px, 4vw, 36px);
  border-radius: 26px;
  background: linear-gradient(135deg, rgba(255,255,255,0.62), rgba(255,255,255,0.28));
}

.scan-card span {
  color: #a92f68;
  font-weight: 1000;
  text-transform: uppercase;
}

.scan-card strong {
  display: block;
  margin: 8px 0 14px;
  font-size: clamp(4rem, 12vw, 8rem);
  line-height: 0.9;
}

.meter-track {
  height: 18px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(81, 46, 89, 0.12);
}

.meter-track b {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--pink), var(--gold), var(--mint), var(--blue));
  transition: width 1s cubic-bezier(.2,.8,.2,1);
}

.promise-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.promise-card {
  min-height: 130px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  color: #5b314f;
  background: rgba(255,255,255,0.42);
  box-shadow: 0 18px 44px rgba(70, 39, 78, 0.12);
  font-weight: 1000;
  transition: 180ms ease;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(150px, 1fr));
  gap: 24px;
  width: min(1160px, 100%);
  margin: 0 auto;
  perspective: 1200px;
}

.memory-card {
  padding: 11px 11px 18px;
  border-radius: 8px;
  background: #fffaf6;
  box-shadow: 0 22px 45px rgba(76, 45, 72, 0.2);
  transform: rotate(var(--tilt));
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.memory-card:hover {
  transform: rotate(0deg) translateY(-8px) scale(1.04);
  box-shadow: 0 30px 58px rgba(76, 45, 72, 0.28);
}

.memory-card img {
  width: 100%;
  aspect-ratio: 1 / 1.15;
  object-fit: cover;
}

.memory-card p,
.paper,
.paper h3 {
  font-family: "Segoe Print", "Comic Sans MS", cursive;
}

.memory-card p {
  margin: 12px 0 0;
  color: #5d3b54;
  font-size: 1.16rem;
  font-weight: 800;
  text-align: center;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.timeline article {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255,255,255,0.42);
}

.timeline span {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(145deg, var(--pink), var(--lavender));
  font-weight: 1000;
}

.agent-shell {
  grid-template-columns: 240px 1fr;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.48), rgba(235,246,255,0.32)),
    radial-gradient(circle at 18% 50%, rgba(114,216,255,0.38), transparent 32%);
}

.agent-orb {
  display: grid;
  place-items: center;
  width: 190px;
  height: 190px;
  margin: auto;
  border-radius: 50%;
  background: linear-gradient(145deg, #ecfbff, #ffe6f2);
  box-shadow: inset 0 0 0 1px #fff, 0 24px 70px rgba(88, 138, 190, 0.2);
  font-size: 5rem;
}

.terminal {
  display: grid;
  gap: 10px;
  margin: 26px 0;
  padding: 22px;
  border: 1px solid rgba(114,216,255,0.55);
  border-radius: 18px;
  color: #253247;
  background: rgba(255,255,255,0.38);
}

.terminal p { margin: 0; }
.terminal span { color: #a92f68; font-weight: 1000; }

.letter {
  text-align: center;
}

.envelope {
  position: relative;
  width: min(760px, 100%);
  min-height: 390px;
  margin: 34px auto 0;
  opacity: 0.55;
  transform: translateY(30px);
  transition: 700ms ease;
}

.envelope.open {
  opacity: 1;
  transform: none;
}

.flap {
  position: absolute;
  inset: 0;
  border-radius: 24px;
  background: linear-gradient(145deg, #ffc1dc, #ffe9f3);
  box-shadow: var(--shadow);
  transform-origin: top;
  transition: 900ms ease;
}

.envelope.open .flap {
  transform: rotateX(78deg);
}

.paper {
  position: relative;
  z-index: 1;
  width: min(690px, calc(100% - 28px));
  margin: 0 auto;
  padding: clamp(24px, 5vw, 44px);
  border-radius: 14px;
  background: #fffdf8;
  box-shadow: 0 20px 60px rgba(94, 50, 79, 0.18);
  font-size: clamp(1.05rem, 2.3vw, 1.36rem);
  line-height: 1.3;
  text-align: left;
  transform: translateY(80px);
  transition: 900ms ease 160ms;
}

.envelope.open .paper {
  transform: translateY(18px);
}

.paper h3 {
  margin: 0 0 12px;
  color: #b8326b;
  font-size: 2.6rem;
}

.paper strong {
  display: block;
  margin-top: 18px;
  color: #ba3970;
  animation: signatureGlow 2s ease-in-out infinite;
}

.finale {
  display: grid;
  place-items: center;
  min-height: 76svh;
  text-align: center;
}

.final-btn {
  font-size: clamp(1rem, 3vw, 1.5rem);
}

.final-message {
  max-width: 720px;
  margin: 20px auto 0;
  font-weight: 1000;
}

.page-actions {
  display: flex;
  justify-content: center;
  margin-top: 42px;
}

.page-next {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 22px;
  text-decoration: none;
}

.landing-page {
  overflow: hidden;
}

.finale .photo-card {
  width: min(620px, 94vw);
}

.modal,
.lightbox,
.cinema {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 18px;
  opacity: 0;
  visibility: hidden;
  background: rgba(35, 22, 43, 0.46);
  backdrop-filter: blur(12px);
  transition: 260ms ease;
}

.modal.show,
.lightbox.show,
.cinema.show {
  opacity: 1;
  visibility: visible;
}

.modal-card,
.cinema-stage {
  position: relative;
  width: min(650px, 100%);
  padding: clamp(28px, 6vw, 54px);
  border: 1px solid var(--line);
  border-radius: 30px;
  background: rgba(255,255,255,0.58);
  box-shadow: 0 30px 90px rgba(31, 19, 42, 0.3);
  text-align: center;
  backdrop-filter: blur(24px);
  animation: modalIn 300ms ease;
}

.modal-card h2,
.cinema-stage h2 {
  margin: 0 0 16px;
  color: #b8326b;
  font-size: clamp(2rem, 7vw, 4.8rem);
}

.modal-card p,
.cinema-stage p,
.cinema-stage strong {
  font-size: clamp(1.05rem, 3vw, 1.45rem);
  line-height: 1.5;
}

.close-btn {
  position: absolute;
  top: 12px;
  right: 14px;
  z-index: 3;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: #7a3159;
  background: rgba(255,255,255,0.78);
  font-size: 1.8rem;
}

.lightbox img {
  width: min(900px, 94vw);
  max-height: 76svh;
  object-fit: contain;
  border-radius: 22px;
  box-shadow: 0 30px 90px rgba(0,0,0,0.35);
}

.lightbox p {
  color: #fff;
  font-family: "Segoe Script", cursive;
  font-size: clamp(2rem, 7vw, 4rem);
  text-shadow: 0 4px 20px rgba(0,0,0,0.35);
}

.cinema {
  background:
    radial-gradient(circle at 50% 40%, rgba(255,214,107,0.42), transparent 34%),
    rgba(34, 17, 43, 0.66);
}

.cinema-stage img {
  width: min(430px, 84vw);
  margin: 0 auto 18px;
  border-radius: 24px;
  box-shadow: 0 24px 60px rgba(78, 29, 70, 0.28);
}

.cinema.finale-mode .cinema-stage {
  width: min(820px, 100%);
}

.tiny-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 90;
  max-width: min(460px, calc(100% - 32px));
  padding: 13px 18px;
  border-radius: 999px;
  opacity: 0;
  color: #5b2443;
  background: rgba(255,255,255,0.82);
  box-shadow: 0 14px 38px rgba(68, 35, 65, 0.18);
  transform: translate(-50%, 20px);
  transition: 250ms ease;
  font-weight: 1000;
  text-align: center;
}

.tiny-toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

#confettiCanvas {
  position: fixed;
  inset: 0;
  z-index: 70;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.ambient-layer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.float-piece {
  position: absolute;
  border: 0;
  background: transparent;
  animation: drift var(--dur) linear infinite;
  opacity: 0.78;
  pointer-events: auto;
}

.spark {
  position: fixed;
  z-index: 100;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  pointer-events: none;
  background: var(--gold);
  box-shadow: 0 0 14px var(--gold);
  animation: sparkOut 800ms ease forwards;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: 780ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

@keyframes riseIn { to { opacity: 1; transform: none; } }
@keyframes pulseGift { 50% { transform: translateY(-2px) scale(1.04); } }
@keyframes floaty { 50% { transform: translateY(-20px) rotate(2deg); } }
@keyframes glowFloat { 50% { transform: translateY(-14px) scale(1.03); box-shadow: 0 0 62px rgba(255,217,120,0.94), 0 34px 100px rgba(255,79,134,0.38); } }
@keyframes pop { to { opacity: 0; transform: scale(1.35); filter: blur(2px); } }
@keyframes modalIn { from { transform: translateY(20px) scale(0.96); } }
@keyframes signatureGlow { 50% { text-shadow: 0 0 18px rgba(255,79,134,0.52); } }
@keyframes drift { from { transform: translateY(105svh) rotate(0deg); } to { transform: translateY(-15svh) rotate(360deg); } }
@keyframes sparkOut { to { opacity: 0; transform: translateY(-22px) scale(0.1); } }
@keyframes photoFloat { 50% { translate: 0 -16px; } }
@keyframes loadSmile { from { width: 12%; } to { width: 100%; } }

@media (max-width: 920px) {
  .intro-stage,
  .hero-grid,
  .favorite-panel,
  .agent-shell,
  .smile-console {
    grid-template-columns: 1fr;
  }

  .intro-stage {
    gap: 10px;
  }

  .intro-photo-stack {
    min-height: 280px;
    order: 2;
  }

  .intro-photo-stack img {
    width: min(240px, 52vw);
    border-width: 8px;
  }

  .intro-photo-stack img:nth-child(1) { left: 3%; top: 0; }
  .intro-photo-stack img:nth-child(2) { left: 28%; top: 22px; }
  .intro-photo-stack img:nth-child(3) { left: 52%; bottom: 8px; }

  .intro-card {
    text-align: center;
  }

  .topbar {
    top: 8px;
    flex-wrap: wrap;
  }

  .music-btn { flex: 1 1 220px; }
  .balloon-field { grid-template-columns: repeat(2, minmax(128px, 1fr)); }
  .gallery-grid { grid-template-columns: repeat(2, minmax(130px, 1fr)); gap: 16px; }
  .timeline { grid-template-columns: 1fr 1fr; }
  .agent-orb { width: 150px; height: 150px; font-size: 4rem; }
}

@media (max-width: 540px) {
  .intro {
    align-items: start;
    overflow-y: auto;
  }

  .intro-stage::before {
    inset: -10px;
    border-radius: 28px;
  }

  .intro-card,
  .favorite-panel,
  .agent-shell,
  .smile-console,
  .story-board {
    border-radius: 24px;
  }

  .intro h1,
  .hero h2,
  .section h2 {
    font-size: clamp(2.1rem, 13vw, 3.7rem);
  }

  .topbar a {
    display: none;
  }

  .balloon span {
    width: 112px;
    height: 140px;
    font-size: 0.92rem;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    width: min(285px, 100%);
  }

  .promise-grid,
  .timeline {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 1ms !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}