/* =========================================================================
   Serenio — home page sections
   ========================================================================= */

/* -------------------------------------------------------------------------
   Hero: copy + the real product (web app behind, iPhone in front)
   ------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: clamp(2.5rem, 1.5rem + 5vh, 5.5rem) clamp(3rem, 2rem + 4vw, 5rem);
  overflow: hidden;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(2.5rem, 1rem + 4vw, 4.5rem);
  grid-template-columns: 1fr 1.08fr;
  align-items: center;
}
.hero__pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 0.95rem 0.4rem 0.5rem;
  border-radius: var(--r-pill);
  background: rgba(255, 252, 248, 0.8);
  border: 1px solid var(--ring-highlight);
  box-shadow: var(--shadow-control);
  font-size: var(--text-label);
  font-weight: 600;
  color: var(--plum);
}
.hero__pill-dot {
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 999px;
  background: rgba(167, 207, 190, 0.45);
  color: var(--sage-ink);
}
.hero__pill-dot svg {
  width: 0.85rem;
  height: 0.85rem;
}
.hero__tagline {
  margin-top: 1.4rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.6rem, 1.7rem + 3.6vw, 4.3rem);
  line-height: 1.02;
  letter-spacing: -0.018em;
  color: var(--ink);
  text-wrap: balance;
}
:lang(zh-Hant) .hero__tagline,
:lang(ja) .hero__tagline,
:lang(ko) .hero__tagline {
  font-size: clamp(2.2rem, 1.5rem + 2.8vw, 3.4rem);
  line-height: 1.2;
}
.hero__sub {
  margin-top: 1.4rem;
  font-size: var(--text-body-lg);
  color: var(--ink-muted);
  line-height: 1.62;
  max-width: 34rem;
}
.hero .cta-row {
  margin-top: 2.1rem;
}

.hero__stage {
  container-type: inline-size;
  position: relative;
  width: 100%;
  max-width: 640px;
  margin-inline: auto;
  aspect-ratio: 1 / 0.9;
}
.hero__glow {
  position: absolute;
  inset: 6% 4% 0 10%;
  border-radius: 999px;
  background: radial-gradient(closest-side, rgba(142, 120, 182, 0.34), transparent),
    radial-gradient(40% 40% at 20% 80%, rgba(167, 207, 190, 0.5), transparent);
  filter: blur(30px);
}
.hero__browser {
  position: absolute;
  top: 5%;
  right: 0;
  width: 88%;
}
.hero__phone {
  --phone-w: 35cqw;
  position: absolute;
  left: 1%;
  bottom: 0;
}
.hero__chip {
  position: absolute;
  z-index: 3;
  animation: chipFloat 7s ease-in-out infinite;
}
.hero__chip--a {
  top: 0;
  left: 12%;
}
.hero__chip--b {
  right: 4%;
  bottom: 8%;
  animation-delay: -3.5s;
}
@keyframes chipFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .hero__chip {
    animation: none;
  }
}
@media (max-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__stage {
    max-width: 560px;
  }
}
@media (max-width: 520px) {
  .hero__phone {
    --phone-w: 40cqw;
  }
  .hero__chip--a {
    left: 2%;
  }
}

/* -------------------------------------------------------------------------
   Proof band — real numbers, set large
   ------------------------------------------------------------------------- */
.proof__grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr;
  margin: 0;
  border-radius: var(--r-panel);
  background: rgba(255, 252, 248, 0.78);
  border: 1px solid var(--ring-highlight);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.proof__item {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
  gap: 0.45rem;
  padding: clamp(1.5rem, 1.1rem + 1.5vw, 2.4rem);
}
.proof__item + .proof__item {
  border-inline-start: 1px solid rgba(136, 117, 180, 0.14);
}
.proof__item dt {
  font-size: 0.95rem;
  color: var(--ink-muted);
  line-height: 1.45;
}
.proof__item dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 1.7rem + 2.2vw, 3.3rem);
  line-height: 1;
  color: var(--plum);
  font-variant-numeric: lining-nums;
}
.proof__item--lead {
  background: linear-gradient(150deg, rgba(237, 231, 243, 0.9), rgba(234, 242, 238, 0.7));
}
.proof__item--lead dd {
  font-size: clamp(3rem, 2rem + 3.4vw, 4.6rem);
}
.proof__note {
  margin-top: 0.8rem;
  font-size: var(--text-caption);
  color: var(--ink-faint);
  text-align: end;
}
@media (max-width: 760px) {
  .proof__grid {
    grid-template-columns: 1fr 1fr;
  }
  .proof__item--lead {
    grid-column: span 2;
  }
  .proof__item + .proof__item {
    border-inline-start: 0;
    border-top: 1px solid rgba(136, 117, 180, 0.14);
  }
  .proof__item:last-child {
    border-inline-start: 1px solid rgba(136, 117, 180, 0.14);
  }
  .proof__note {
    text-align: start;
  }
}

/* -------------------------------------------------------------------------
   Film — the 28-second launch film
   ------------------------------------------------------------------------- */
.film__head {
  margin-bottom: clamp(1.4rem, 1rem + 1.5vw, 2.2rem);
}
.film__head .eyebrow {
  margin-bottom: 0.8rem;
}
.film__video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-panel);
  background: var(--surface);
  border: 1px solid var(--ring-highlight);
  box-shadow: var(--shadow-float);
}

/* -------------------------------------------------------------------------
   Principles — how Yuyu behaves
   ------------------------------------------------------------------------- */
.principles {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr;
  gap: 1.1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.principle {
  position: relative;
  padding: clamp(1.6rem, 1.2rem + 1vw, 2.3rem);
  border-radius: var(--r-panel);
  background: rgba(255, 252, 248, 0.74);
  border: 1px solid var(--ring-highlight);
  box-shadow: var(--shadow-control);
}
.principle:first-child {
  background: linear-gradient(160deg, #efe9f5, #f7f2f1 70%);
  box-shadow: var(--shadow-soft);
}
.principle__num {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--violet-ink);
  letter-spacing: 0.06em;
}
.principle h3 {
  margin-top: 1.6rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.45rem, 1.2rem + 0.9vw, 1.8rem);
  line-height: 1.15;
  color: var(--ink);
}
.principle p {
  margin-top: 0.8rem;
  color: var(--ink-muted);
  line-height: 1.62;
}
@media (max-width: 860px) {
  .principles {
    grid-template-columns: 1fr;
  }
}

/* -------------------------------------------------------------------------
   Feature rows — real screens beside the story
   ------------------------------------------------------------------------- */
.features {
  display: grid;
  gap: clamp(3.5rem, 2.5rem + 4vw, 6rem);
}
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: center;
}
.feature--flip .feature__media {
  order: 2;
}
.feature__media {
  --tint-a: #efe9f5;
  --tint-b: #eaf2ee;
  position: relative;
  display: grid;
  place-items: center;
  min-height: 100%;
  padding: clamp(2rem, 1.5rem + 3vw, 3.6rem) clamp(1.5rem, 1rem + 2vw, 3rem);
  border-radius: var(--r-panel);
  background: radial-gradient(70% 60% at 30% 20%, var(--tint-a), transparent 70%),
    radial-gradient(70% 60% at 80% 90%, var(--tint-b), transparent 70%), #f7f3f1;
  border: 1px solid var(--ring-highlight);
  overflow: hidden;
}
.feature__media--rose {
  --tint-a: #f4e6ea;
  --tint-b: #efe9f5;
}
.feature__media--sage {
  --tint-a: #e3f0e9;
  --tint-b: #efe9f5;
}
.feature__media--amber {
  --tint-a: #f5ecd8;
  --tint-b: #efe9f5;
}
.feature__media .device-phone {
  --phone-w: clamp(210px, 22vw, 280px);
}
.feature__media--wide {
  padding: clamp(1.2rem, 0.8rem + 2vw, 2.6rem);
}
.feature__shot {
  width: 100%;
  height: auto;
  border-radius: 18px;
  box-shadow: 0 30px 70px -34px rgba(46, 34, 72, 0.5);
}
.feature__copy .eyebrow {
  margin-bottom: 0.9rem;
}
.feature__copy h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-h1);
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--ink);
  text-wrap: balance;
}
:lang(zh-Hant) .feature__copy h3,
:lang(ja) .feature__copy h3,
:lang(ko) .feature__copy h3 {
  line-height: 1.25;
}
.feature__copy .lead {
  margin-top: 1.1rem;
}
.checklist {
  display: grid;
  gap: 0.75rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}
.checklist li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
  color: var(--ink);
  line-height: 1.55;
}
.checklist li::before {
  content: "";
  margin-top: 0.22rem;
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 999px;
  background: var(--sage-ink);
  -webkit-mask: var(--icon-check) center / 72% no-repeat;
  mask: var(--icon-check) center / 72% no-repeat;
}
.practice-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}
.practice-chips li {
  padding: 0.45rem 0.9rem;
  border-radius: var(--r-pill);
  background: rgba(255, 252, 248, 0.85);
  border: 1px solid rgba(136, 117, 180, 0.2);
  font-size: var(--text-label);
  font-weight: 600;
  color: var(--plum);
}
.feature__link {
  margin-top: 1.4rem;
}
@media (max-width: 860px) {
  .feature {
    grid-template-columns: 1fr;
  }
  .feature--flip .feature__media {
    order: 0;
  }
}

/* -------------------------------------------------------------------------
   Bento — "and a little more"
   ------------------------------------------------------------------------- */
.bento {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-areas:
    "checkin plan breath"
    "letters capsule breath"
    "sunday sunday breath";
  gap: 1.1rem;
}
.tile {
  position: relative;
  padding: clamp(1.5rem, 1.2rem + 0.8vw, 2rem);
  border-radius: var(--r-panel);
  background: rgba(255, 252, 248, 0.76);
  border: 1px solid var(--ring-highlight);
  box-shadow: var(--shadow-control);
  transition: transform var(--dur-control) var(--ease-entry),
    box-shadow var(--dur-control) var(--ease-entry);
}
.tile:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}
.tile__icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: rgba(136, 117, 180, 0.12);
  color: var(--plum);
}
.tile__icon svg {
  width: 22px;
  height: 22px;
}
.tile__icon--sage {
  background: rgba(167, 207, 190, 0.32);
  color: var(--sage-ink);
}
.tile__icon--rose {
  background: rgba(232, 200, 206, 0.45);
  color: var(--rose-ink);
}
.tile__icon--amber {
  background: rgba(232, 210, 159, 0.45);
  color: #7a5b1c;
}
.tile h3 {
  margin-top: 1.1rem;
  color: var(--ink);
}
.tile p {
  margin-top: 0.5rem;
  color: var(--ink-muted);
  line-height: 1.6;
}
.tile__tag {
  display: inline-block;
  margin-top: 0.9rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--r-pill);
  background: rgba(136, 117, 180, 0.1);
  font-size: var(--text-caption);
  font-weight: 600;
  color: var(--plum);
}
.tile--checkin {
  grid-area: checkin;
}
.tile--plan {
  grid-area: plan;
}
.tile--letters {
  grid-area: letters;
}
.tile--capsule {
  grid-area: capsule;
}
.tile--sunday {
  grid-area: sunday;
}
.tile--breath {
  grid-area: breath;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding-bottom: 0;
  background: linear-gradient(170deg, #e7f1ec, #eef0f4 55%, #efe9f5);
}
.tile--breath .device-phone {
  --phone-w: min(280px, 86%);
  margin: auto auto 0;
  transform: translateY(8%);
}
@media (max-width: 960px) {
  .bento {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "checkin plan"
      "letters capsule"
      "sunday sunday"
      "breath breath";
  }
  .tile--breath {
    flex-direction: row;
    align-items: flex-start;
    gap: 1.5rem;
  }
  .tile--breath .tile__body {
    flex: 1;
    padding-bottom: 1.8rem;
  }
  .tile--breath .device-phone {
    --phone-w: 200px;
    flex: none;
    margin: 0;
  }
}
@media (max-width: 600px) {
  .bento {
    grid-template-columns: 1fr;
    grid-template-areas: "checkin" "plan" "letters" "capsule" "sunday" "breath";
  }
  .tile--breath {
    flex-direction: column;
  }
  .tile--breath .device-phone {
    --phone-w: 220px;
    margin-inline: auto;
  }
}

/* -------------------------------------------------------------------------
   Two ways in — iPhone app and web app, both free
   ------------------------------------------------------------------------- */
.ways {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.way {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 460px;
  padding: clamp(1.8rem, 1.4rem + 1.5vw, 2.8rem);
  border-radius: var(--r-panel);
  border: 1px solid var(--ring-highlight);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.way--ios {
  background: radial-gradient(80% 70% at 100% 100%, #dcebe3, transparent 70%),
    linear-gradient(160deg, #f1ecf6, #f6f2ef);
}
.way--web {
  background: radial-gradient(80% 70% at 100% 100%, #efdfe6, transparent 70%),
    linear-gradient(160deg, #f1ecf6, #f6f2ef);
}
.way__kicker {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.75rem;
  border-radius: var(--r-pill);
  background: rgba(255, 252, 248, 0.8);
  border: 1px solid var(--ring-highlight);
  font-size: var(--text-caption);
  font-weight: 600;
  color: var(--plum);
}
.way__kicker svg {
  width: 0.95rem;
  height: 0.95rem;
}
.way h3 {
  margin-top: 1.1rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-h2);
  line-height: 1.15;
}
.way p {
  margin-top: 0.8rem;
  max-width: 34ch;
  color: var(--ink-muted);
  line-height: 1.6;
}
.way .cta-row {
  margin-top: 1.6rem;
  position: relative;
  z-index: 2;
}
.way__meta {
  margin-top: 0.9rem;
  font-size: var(--text-caption);
  color: var(--ink-faint);
  position: relative;
  z-index: 2;
}
.way__art {
  position: absolute;
  z-index: 1;
  pointer-events: none;
}
.way--ios .way__art {
  right: -4%;
  bottom: -26%;
}
.way--ios .device-phone {
  --phone-w: clamp(170px, 17vw, 215px);
  transform: rotate(-6deg);
}
.way--web .way__art {
  right: -18%;
  bottom: -8%;
  width: 72%;
  transform: rotate(-4deg);
}
.way__copy {
  position: relative;
  z-index: 2;
  max-width: 60%;
}
.freebar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem 1.8rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}
.freebar li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--ink);
}
.freebar li::before {
  content: "";
  width: 1.1rem;
  height: 1.1rem;
  background: var(--sage-ink);
  -webkit-mask: var(--icon-check) center / contain no-repeat;
  mask: var(--icon-check) center / contain no-repeat;
}
.ways__foot {
  margin-top: 1.5rem;
  text-align: center;
  color: var(--ink-muted);
  font-size: 0.98rem;
}
.ways__foot a {
  color: var(--plum);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}
@media (max-width: 860px) {
  .ways {
    grid-template-columns: 1fr;
  }
  .way {
    min-height: 420px;
  }
}
@media (max-width: 480px) {
  .way__copy {
    max-width: none;
  }
  .way {
    min-height: 0;
    padding-bottom: 14rem;
  }
  .way--ios .way__art {
    right: 50%;
    bottom: -42%;
    transform: translateX(50%);
  }
  .way--web .way__art {
    right: -6%;
    bottom: -6%;
    width: 92%;
  }
}

/* -------------------------------------------------------------------------
   Built carefully — the trust band
   ------------------------------------------------------------------------- */
.careful {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-panel);
  padding: clamp(2.4rem, 1.8rem + 3vw, 4.4rem);
  color: #fff;
  background: linear-gradient(150deg, #66528f, #4d3c70 55%, #3b2e56);
  box-shadow: var(--shadow-float);
}
/* the mesh only tints: no canvas fill, so white text keeps AA contrast */
.careful .mesh {
  background: transparent;
  opacity: 0.22;
  mix-blend-mode: screen;
}
.careful__head {
  position: relative;
  z-index: 1;
  max-width: 44rem;
}
.careful__head .eyebrow {
  color: #ece4f5;
}
.careful__head h2 {
  margin-top: 0.8rem;
  color: #fff;
}
.careful__head p {
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--text-body-lg);
  line-height: 1.6;
}
.careful__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.1rem;
  margin: clamp(2rem, 1.5rem + 2vw, 3rem) 0 0;
  padding: 0;
  list-style: none;
}
.careful__item {
  padding: 1.4rem;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
}
.careful__item svg {
  width: 26px;
  height: 26px;
  color: #d8c8ea;
}
.careful__item h3 {
  margin-top: 1rem;
  font-size: 1.05rem;
  color: #fff;
}
.careful__item p {
  margin-top: 0.5rem;
  font-size: 0.93rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.78);
}
.careful .btn--secondary {
  position: relative;
  z-index: 1;
  margin-top: 2.2rem;
  background: rgba(255, 255, 255, 0.96);
  color: var(--plum);
}
@media (max-width: 1000px) {
  .careful__grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 560px) {
  .careful__grid {
    grid-template-columns: 1fr;
  }
}

/* -------------------------------------------------------------------------
   Testimonials — soft porcelain quote wall
   ------------------------------------------------------------------------- */
.quotes {
  columns: 2;
  column-gap: 1.25rem;
}
.quote {
  break-inside: avoid;
  margin: 0 0 1.25rem;
  padding: 1.7rem 1.8rem;
  border-radius: var(--r-panel);
  background: rgba(255, 252, 248, 0.74);
  border: 1px solid var(--ring-highlight);
  box-shadow: var(--shadow-control);
}
.quote blockquote {
  margin: 0;
}
.quote p {
  font-size: var(--text-body-lg);
  line-height: 1.6;
  color: var(--ink);
}
.quote__by {
  margin-top: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: var(--text-label);
  color: var(--ink-muted);
}
.quote__avatar {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  color: #fff;
  font-size: 0.95rem;
}
@media (max-width: 680px) {
  .quotes {
    columns: 1;
  }
}

/* -------------------------------------------------------------------------
   About + founder note + partners
   ------------------------------------------------------------------------- */
.about {
  display: grid;
  grid-template-columns: 1.1fr 0.8fr;
  gap: clamp(2rem, 1rem + 4vw, 4.5rem);
  align-items: start;
}
.about__story .section-title {
  margin-top: 0.8rem;
}
.about__story .lead {
  margin-top: 1.3rem;
}
.about__story p + p {
  margin-top: 1.1rem;
}
.about__story .muted {
  max-width: var(--max-read);
  line-height: 1.7;
}
.signoff {
  margin-top: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.signoff__name {
  font-family: "Glitten", "Iowan Old Style", Georgia, serif;
  font-size: 1.9rem;
  line-height: 1;
  color: var(--plum);
}
.signoff__role {
  font-size: var(--text-label);
  color: var(--ink-faint);
}
.about__aside {
  display: grid;
  gap: 1.1rem;
  position: sticky;
  top: 96px;
}
.timeline {
  list-style: none;
  margin: 0;
  padding: clamp(1.5rem, 1.2rem + 1vw, 2.1rem);
  display: grid;
  gap: 1rem;
  border-radius: var(--r-panel);
  background: rgba(255, 252, 248, 0.74);
  border: 1px solid var(--ring-highlight);
  box-shadow: var(--shadow-control);
}
.timeline li {
  display: grid;
  grid-template-columns: 4.6rem 1fr;
  gap: 1rem;
  align-items: baseline;
}
.timeline time {
  font-family: var(--font-display);
  color: var(--plum);
  font-size: 1.05rem;
}
.timeline li:last-child span {
  color: var(--ink);
  font-weight: 600;
}
.partners {
  border-radius: var(--r-panel);
  padding: clamp(1.5rem, 1.2rem + 1vw, 2.1rem);
  background: rgba(255, 252, 248, 0.74);
  border: 1px solid var(--ring-highlight);
  box-shadow: var(--shadow-control);
}
.partners__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.2rem 1.8rem;
  margin-top: 1.1rem;
}
.partners__row img {
  height: 30px;
  width: auto;
  opacity: 0.62;
  filter: grayscale(1);
  transition: opacity var(--dur-control) var(--ease-entry);
}
.partners__row img:hover {
  opacity: 0.92;
}
.partners__note {
  margin-top: 1.2rem;
  font-size: var(--text-caption);
  line-height: 1.6;
  color: var(--ink-faint);
}
@media (max-width: 860px) {
  .about {
    grid-template-columns: 1fr;
  }
  .about__aside {
    position: static;
  }
}