:root {
  color-scheme: light;
  --paper: #f3eee6;
  --paper-soft: #e5d9cc;
  --paper-light: #fffaf3;
  --ink: #291a15;
  --ink-soft: #655248;
  --muted: #806b60;
  --night: #21130f;
  --night-soft: #321d16;
  --copper: #9a5036;
  --gold: #c69a5b;
  --line: rgba(52, 31, 23, 0.17);
  --line-light: rgba(255, 248, 238, 0.2);
  --serif: "Songti SC", STSong, "Noto Serif CJK SC", "Source Han Serif SC", SimSun, ui-serif, serif;
  --sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

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

html {
  background: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(1rem, 0.96rem + 0.14vw, 1.08rem);
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body,
a,
button {
  -webkit-tap-highlight-color: transparent;
}

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

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

button {
  color: inherit;
  font: inherit;
}

figure,
h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 500;
  text-wrap: balance;
}

[hidden] {
  display: none !important;
}

.page-shell {
  width: min(100% - 80px, 1320px);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  background: var(--night);
  color: var(--paper-light);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(243, 238, 230, 0.94);
}

.site-header__inner {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.2em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.4rem, 3vw, 2.7rem);
}

.site-nav a {
  position: relative;
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.17em;
}

.site-nav a[aria-current="page"] {
  color: var(--ink);
}

.site-nav a[aria-current="page"]::after {
  position: absolute;
  right: 0;
  bottom: 0.45rem;
  left: 0;
  height: 1px;
  background: var(--copper);
  content: "";
}

.eyebrow {
  color: var(--copper);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
}

.eyebrow--light {
  color: rgba(255, 248, 238, 0.62);
}

.catalog-hero {
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 18% 18%, rgba(180, 112, 75, 0.09), transparent 26rem),
    var(--paper);
}

.catalog-hero__inner {
  display: grid;
  min-height: clamp(600px, calc(100svh - 78px), 790px);
  grid-template-columns: minmax(0, 0.86fr) minmax(28rem, 1.14fr);
  align-items: stretch;
  gap: clamp(3rem, 7vw, 7rem);
  padding-block: clamp(3.5rem, 6vw, 5.5rem);
}

.catalog-hero__copy {
  display: flex;
  max-width: 47rem;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding-block: 2rem;
}

.catalog-hero h1 {
  margin-top: 1.45rem;
  font-size: clamp(4rem, 6.9vw, 7rem);
  letter-spacing: 0.055em;
  line-height: 1.2;
}

.catalog-hero__facts {
  display: grid;
  gap: 0.1rem;
  margin-top: 2rem;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1rem, 0.92rem + 0.35vw, 1.25rem);
}

.text-link {
  display: inline-flex;
  width: fit-content;
  min-height: 48px;
  align-items: center;
  gap: 1.15rem;
  margin-top: 2.1rem;
  border-bottom: 1px solid rgba(41, 26, 21, 0.5);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.16em;
}

.text-link--dark {
  margin-top: 1.5rem;
}

.catalog-hero__media {
  position: relative;
  min-height: 32rem;
  overflow: hidden;
  background: #d5c7ba;
}

.catalog-hero__media img {
  height: 100%;
  object-fit: cover;
  object-position: 54% 50%;
  filter: saturate(0.8) contrast(1.03);
  transition: transform 700ms ease;
}

.catalog-hero__media:hover img {
  transform: scale(1.012);
}

.catalog-hero__media::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 58%, rgba(25, 14, 10, 0.58));
  content: "";
  pointer-events: none;
}

.catalog-hero__media figcaption {
  position: absolute;
  z-index: 1;
  right: 1.5rem;
  bottom: 1.3rem;
  left: 1.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: rgba(255, 249, 241, 0.86);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
}

.catalog-map {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 243, 0.45);
}

.catalog-map__inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.catalog-map a {
  display: flex;
  min-height: 92px;
  align-items: center;
  gap: 1rem;
  padding-inline: clamp(1rem, 3vw, 2.5rem);
  border-left: 1px solid var(--line);
}

.catalog-map a:last-child {
  border-right: 1px solid var(--line);
}

.catalog-map span {
  color: var(--copper);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
}

.catalog-map strong {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.origin-chapter {
  padding-block: clamp(6rem, 10vw, 10rem);
}

.origin-chapter__heading {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(18rem, 0.56fr);
  align-items: end;
  gap: 4rem;
  margin-bottom: clamp(3.5rem, 6vw, 6rem);
}

.origin-chapter__heading h2 {
  margin-top: 1rem;
  font-size: clamp(3.3rem, 6vw, 6rem);
  letter-spacing: 0.05em;
  line-height: 1.18;
}

.origin-chapter__intro {
  max-width: 25rem;
  padding-bottom: 0.5rem;
  color: var(--ink-soft);
}

.tea-stage {
  display: grid;
  grid-template-columns: minmax(15rem, 0.56fr) minmax(24rem, 1.04fr);
  grid-template-rows: minmax(31rem, 1fr) auto;
  border-top: 2px solid var(--active-accent, var(--copper));
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 243, 0.5);
  transition: border-color 220ms ease;
}

.tea-stage__tabs {
  display: flex;
  grid-row: 1 / 3;
  flex-direction: column;
  border-right: 1px solid var(--line);
}

.tea-tab {
  display: grid;
  min-height: 7.5rem;
  flex: 1;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  grid-template-rows: auto auto;
  align-content: center;
  column-gap: 0.8rem;
  padding: 1.1rem clamp(1rem, 2.3vw, 2rem);
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease;
}

.tea-tab:last-child {
  border-bottom: 0;
}

.tea-tab:hover {
  background: rgba(255, 250, 243, 0.8);
}

.tea-tab:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: -4px;
}

.tea-tab.is-active {
  background: var(--night);
  color: var(--paper-light);
}

.tea-tab__number {
  grid-row: 1 / 3;
  align-self: center;
  color: var(--copper);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
}

.tea-tab.is-active .tea-tab__number {
  color: var(--gold);
}

.tea-tab__name {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 1.15rem + 0.65vw, 2rem);
  letter-spacing: 0.08em;
  line-height: 1.3;
}

.tea-tab__type {
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.09em;
}

.tea-tab.is-active .tea-tab__type {
  color: rgba(255, 248, 238, 0.55);
}

.tea-stage__visual {
  position: relative;
  min-height: 42rem;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 42%, rgba(198, 154, 91, 0.18), transparent 21rem),
    var(--night);
}

.tea-stage__image,
.tea-stage__signature {
  position: absolute;
  inset: 0;
}

.tea-stage__image img {
  height: 100%;
  object-fit: cover;
}

.tea-stage__signature {
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle, transparent 0 18%, rgba(255, 248, 238, 0.08) 18.2% 18.5%, transparent 18.7% 30%, rgba(255, 248, 238, 0.05) 30.2% 30.5%, transparent 30.7%),
    linear-gradient(145deg, #351d15, #180c09);
  color: var(--paper-light);
}

.tea-stage__signature span {
  font-family: var(--serif);
  font-size: clamp(7rem, 15vw, 13rem);
  line-height: 1;
}

.tea-stage__signature small {
  position: absolute;
  right: 1.5rem;
  bottom: 1.2rem;
  color: rgba(255, 248, 238, 0.46);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
}

.tea-stage__counter {
  position: absolute;
  z-index: 2;
  right: 1.35rem;
  top: 1.15rem;
  display: inline-grid;
  min-width: 4.4rem;
  min-height: 2.2rem;
  place-items: center;
  border: 1px solid rgba(255, 248, 238, 0.26);
  background: rgba(28, 15, 11, 0.36);
  color: rgba(255, 248, 238, 0.82);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  backdrop-filter: blur(8px);
}

.tea-stage__panel {
  display: grid;
  min-height: 17rem;
  align-content: center;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: 2rem;
  padding: clamp(2.2rem, 4vw, 3.8rem);
  border-top: 1px solid var(--line);
  outline: none;
}

.tea-stage__type,
.tea-stage__identity {
  color: var(--copper);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.13em;
}

.tea-stage__name {
  margin-top: 0.55rem;
  font-size: clamp(2.5rem, 4vw, 4.2rem);
  letter-spacing: 0.07em;
  line-height: 1.2;
}

.tea-stage__summary {
  max-width: 34rem;
  margin-top: 0.9rem;
  color: var(--ink-soft);
}

.tea-stage__detail {
  display: inline-flex;
  min-width: 12.5rem;
  min-height: 3.6rem;
  grid-column: 2;
  grid-row: 1 / 4;
  align-self: center;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.8rem 1.1rem;
  border: 1px solid var(--line);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  transition: background 180ms ease, color 180ms ease;
}

.tea-stage__detail:hover,
.tea-stage__detail:focus-visible {
  background: var(--night);
  color: var(--paper-light);
}

.tea-stage__identity {
  margin-top: 1rem;
}

.gift-section {
  padding-block: clamp(6rem, 9vw, 9rem);
  background:
    radial-gradient(circle at 72% 24%, rgba(190, 128, 74, 0.15), transparent 24rem),
    var(--night);
  color: var(--paper-light);
}

.gift-feature {
  display: grid;
  grid-template-columns: minmax(19rem, 0.7fr) minmax(28rem, 1.3fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 7rem);
}

.gift-copy {
  max-width: 31rem;
}

.gift-copy h2 {
  margin-top: 1.15rem;
  font-size: clamp(3.2rem, 5.3vw, 5.6rem);
  letter-spacing: 0.05em;
  line-height: 1.18;
}

.gift-copy__lead {
  margin-top: 1.35rem;
  color: rgba(255, 248, 238, 0.64);
  font-family: var(--serif);
  font-size: clamp(1rem, 0.92rem + 0.34vw, 1.25rem);
}

.gift-contents {
  margin-top: 2.2rem;
  border-top: 1px solid var(--line-light);
}

.gift-contents a {
  display: flex;
  min-height: 3.5rem;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line-light);
  color: rgba(255, 248, 238, 0.74);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
}

.gift-cta {
  display: flex;
  min-height: 4.2rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 2.2rem;
  padding-inline: 1.2rem;
  border: 1px solid rgba(255, 248, 238, 0.42);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  transition: background 180ms ease, color 180ms ease;
}

.gift-cta:hover,
.gift-cta:focus-visible {
  background: var(--paper-light);
  color: var(--night);
}

.gift-media {
  position: relative;
  display: grid;
  min-height: clamp(34rem, 53vw, 45rem);
  grid-template-columns: minmax(0, 1fr) minmax(10rem, 0.58fr);
  align-items: end;
  gap: clamp(1rem, 2.4vw, 2rem);
}

.gift-media figure {
  overflow: hidden;
}

.gift-media img {
  height: 100%;
  object-fit: cover;
}

.gift-media__main {
  height: 88%;
}

.gift-media__detail {
  height: 72%;
}

.origin-band {
  border-bottom: 1px solid var(--line);
  background: var(--paper-soft);
}

.origin-band__inner {
  display: grid;
  min-height: 220px;
  grid-template-columns: 0.36fr minmax(0, 1fr) auto auto;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 4rem);
}

.origin-band__title {
  font-family: var(--serif);
  font-size: clamp(2rem, 3.6vw, 3.8rem);
  letter-spacing: 0.055em;
}

.origin-band__copy {
  color: var(--ink-soft);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
}

.origin-band__arrow {
  display: grid;
  width: 3rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.site-footer {
  background: var(--night);
  color: rgba(255, 248, 238, 0.62);
}

.site-footer__inner {
  display: flex;
  min-height: 150px;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand--footer {
  color: var(--paper-light);
}

.site-footer p:last-child {
  font-family: var(--serif);
  font-size: 0.88rem;
  letter-spacing: 0.14em;
}

.noscript-list {
  padding-block: 5rem;
}

.noscript-list h2 {
  font-size: 3rem;
}

@media (max-width: 1050px) {
  .catalog-hero__inner {
    grid-template-columns: minmax(0, 0.9fr) minmax(23rem, 1.1fr);
    gap: 3rem;
  }

  .tea-stage {
    grid-template-columns: minmax(14rem, 0.5fr) minmax(20rem, 1fr);
  }

  .tea-stage__detail {
    min-width: 10rem;
  }

  .gift-feature {
    grid-template-columns: minmax(17rem, 0.72fr) minmax(23rem, 1.28fr);
    gap: 3rem;
  }

  .origin-band__inner {
    grid-template-columns: 0.3fr minmax(0, 1fr) auto;
  }

  .origin-band__copy {
    display: none;
  }
}

@media (max-width: 800px) {
  .page-shell {
    width: min(100% - 40px, 42rem);
  }

  .site-header {
    position: sticky;
    top: 0;
    backdrop-filter: blur(14px);
  }

  .site-header__inner {
    min-height: 66px;
  }

  .site-nav {
    gap: 0.7rem;
  }

  .catalog-hero__inner {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 2.4rem;
    padding-block: 4rem 2rem;
  }

  .catalog-hero__copy {
    padding-block: 0;
  }

  .catalog-hero h1 {
    font-size: clamp(3.6rem, 12vw, 5rem);
  }

  .catalog-hero__media {
    min-height: 0;
    aspect-ratio: 16 / 10;
  }

  .catalog-map a {
    min-height: 74px;
    flex-direction: column;
    justify-content: center;
    gap: 0.15rem;
    padding-inline: 0.5rem;
  }

  .origin-chapter {
    padding-block: 5.5rem;
  }

  .origin-chapter__heading {
    grid-template-columns: 1fr;
    gap: 1.6rem;
    margin-bottom: 3rem;
  }

  .origin-chapter__intro {
    max-width: none;
  }

  .origin-chapter__heading h2 {
    font-size: clamp(3.1rem, 11vw, 4.8rem);
  }

  .tea-stage {
    width: 100%;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    border-right: 0;
    border-left: 0;
  }

  .tea-stage__tabs {
    grid-row: auto;
    flex-direction: row;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    scrollbar-width: none;
    scroll-snap-type: x proximity;
  }

  .tea-stage__tabs::-webkit-scrollbar {
    display: none;
  }

  .tea-tab {
    min-width: max(8.4rem, 27vw);
    min-height: 5.4rem;
    flex: 0 0 auto;
    grid-template-columns: 1.5rem minmax(0, 1fr);
    padding: 0.8rem 1rem;
    border-right: 1px solid var(--line);
    border-bottom: 0;
    scroll-snap-align: start;
  }

  .tea-tab__name {
    font-size: 1.24rem;
  }

  .tea-tab__type {
    display: none;
  }

  .tea-stage__visual {
    min-height: 0;
    aspect-ratio: 4 / 5;
  }

  .tea-stage__panel {
    min-height: 18rem;
    grid-template-columns: 1fr;
    padding: 2.2rem 1.25rem 2.5rem;
  }

  .tea-stage__detail {
    width: 100%;
    min-width: 0;
    min-height: 3.7rem;
    grid-column: 1;
    grid-row: auto;
    margin-top: 1.7rem;
  }

  .gift-feature {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .gift-copy {
    max-width: none;
  }

  .gift-media {
    min-height: 0;
    aspect-ratio: 1 / 1.08;
    grid-template-columns: minmax(0, 1fr) minmax(6rem, 0.52fr);
  }

  .gift-media__main {
    height: 91%;
  }

  .gift-media__detail {
    height: 76%;
  }

  .origin-band__inner {
    min-height: 180px;
    grid-template-columns: 1fr auto;
    gap: 1rem;
  }

  .origin-band__inner .eyebrow {
    grid-column: 1;
  }

  .origin-band__title {
    grid-column: 1;
    font-size: clamp(1.8rem, 8vw, 2.7rem);
  }

  .origin-band__arrow {
    grid-column: 2;
    grid-row: 1 / 3;
  }
}

@media (max-width: 520px) {
  .page-shell {
    width: min(100% - 28px, 31rem);
  }

  .site-header__inner {
    gap: 0.8rem;
  }

  .brand {
    font-size: 0.96rem;
    letter-spacing: 0.15em;
  }

  .site-nav {
    gap: 0.15rem;
  }

  .site-nav a {
    min-width: 44px;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
  }

  .catalog-hero__inner {
    padding-top: 3.2rem;
  }

  .catalog-hero h1 {
    font-size: clamp(3rem, 15vw, 4.1rem);
    letter-spacing: 0.035em;
  }

  .catalog-hero__facts {
    margin-top: 1.5rem;
  }

  .catalog-hero__media figcaption {
    right: 1rem;
    bottom: 0.85rem;
    left: 1rem;
    font-size: 0.6rem;
  }

  .catalog-map__inner {
    width: 100%;
  }

  .catalog-map strong {
    font-size: 0.9rem;
  }

  .origin-chapter {
    padding-block: 4.7rem;
  }

  .origin-chapter__heading {
    width: min(100% - 28px, 31rem);
  }

  .tea-tab {
    min-width: 8.7rem;
  }

  .tea-stage__name {
    font-size: 2.6rem;
  }

  .tea-stage__summary {
    font-size: 0.94rem;
  }

  .gift-section {
    padding-block: 5rem;
  }

  .gift-copy h2 {
    font-size: clamp(2.9rem, 14vw, 4.1rem);
  }

  .gift-media {
    width: calc(100% + 8px);
    margin-left: -4px;
  }

  .site-footer__inner {
    min-height: 132px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 0.45rem;
  }

  .site-footer p:last-child {
    font-size: 0.72rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}