@font-face {
  font-family: "Source Han Sans SC VF";
  src: url("./assets/fonts/SourceHanSansSC-Homepage.ttf") format("truetype");
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
}

@font-face {
  font-family: "Source Han Serif SC VF";
  src: url("./assets/fonts/SourceHanSerifSC-Homepage.ttf") format("truetype");
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
}

:root {
  --cloud: #fbf6ee;
  --sand: #f2ebe0;
  --stone: #d9c6b0;
  --ink: #2c1f14;
  --ink-soft: #7b6e64;
  --coral: #c47a6b;
  --teal: #3d7a72;
  --teal-soft: #6c9f9a;
  --maroon: #7a2e38;
  --night: #0b2421;
  --line: rgba(44, 31, 20, .2);
  --line-soft: rgba(44, 31, 20, .11);
  --serif: "Source Han Serif SC VF", "Songti SC", STSong, serif;
  --sans: "Source Han Sans SC VF", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shell: min(1180px, calc(100vw - 48px));
  --fast: 160ms;
  --normal: 240ms;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  line-break: strict;
  font-synthesis: none;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--cloud);
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  background: url("./assets/brand/paper-warm-sand-780.webp") center / 780px auto repeat;
  opacity: .09;
  pointer-events: none;
}

body.nav-open { overflow: hidden; }
img, video { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
button { font: inherit; }
[hidden] { display: none !important; }
h1, h2, h3, h4 { text-wrap: balance; }
p, li { text-wrap: pretty; }

:focus-visible { outline: 3px solid var(--teal); outline-offset: 4px; }
.shell { width: var(--shell); margin-inline: auto; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 1000;
  padding: 10px 16px;
  color: var(--cloud);
  background: var(--night);
}
.skip-link:focus { top: 16px; }
main:focus { outline: none; }
main {
  position: relative;
  overflow: clip;
  background:
    radial-gradient(ellipse 42% 18% at 86% 31%, rgba(61, 122, 114, .055), transparent 72%),
    radial-gradient(ellipse 34% 16% at 8% 67%, rgba(196, 122, 107, .045), transparent 74%);
}

.reading-progress { position: fixed; inset: 0 0 auto; z-index: 200; height: 2px; pointer-events: none; }
.reading-progress span { display: block; width: 0; height: 100%; background: var(--teal); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 246, 238, .94);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px);
  transition: border-color var(--normal) ease, background var(--normal) ease;
}
.site-header.is-scrolled { border-color: var(--stone); }
.header-inner { display: flex; min-height: 72px; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; min-height: 56px; align-items: center; gap: 10px; text-decoration: none; }
.brand img { width: 34px; height: 52px; object-fit: contain; }
.brand > span { display: grid; font-family: var(--serif); font-size: 18px; font-weight: 700; line-height: 1.04; }
.brand small { margin-top: 4px; font-family: var(--sans); font-size: 8px; font-weight: 600; letter-spacing: .18em; text-transform: lowercase; }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a {
  position: relative;
  min-height: 44px;
  padding: 11px 0 9px;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
}
.site-nav a::after {
  position: absolute;
  left: 0;
  bottom: 6px;
  width: 100%;
  height: 1px;
  content: "";
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--normal) ease;
}
.site-nav a:hover::after, .site-nav a.is-active::after { transform: scaleX(1); transform-origin: left; }
.nav-toggle { display: none; }

.hero { padding: clamp(72px, 9vw, 118px) 0 70px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(360px, 5fr); align-items: center; gap: clamp(56px, 7vw, 96px); }
.hero-copy { min-width: 0; }
.eyebrow, .section-index {
  margin: 0 0 16px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.eyebrow span { color: var(--coral); }
.hero h1 {
  max-width: 760px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(46px, 4.6vw, 64px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: 0;
}
.hero-lead { margin: 24px 0 32px; color: var(--ink-soft); font-size: 18px; }
.identity-list { border-top: 1px solid var(--ink); }
.identity-list a {
  display: grid;
  grid-template-columns: 136px minmax(0, 1fr) auto;
  min-height: 66px;
  align-items: center;
  gap: 20px;
  border-bottom: 1px solid var(--stone);
  text-decoration: none;
  transition: color var(--fast) ease, padding var(--normal) cubic-bezier(.2,.75,.2,1), background var(--fast) ease;
}
.identity-list a:hover, .identity-list a:focus-visible, .identity-list a.is-previewing { padding-left: 10px; color: var(--teal); background: rgba(61, 122, 114, .045); }
.identity-en { color: var(--ink-soft); font-size: 10px; letter-spacing: .11em; }
.identity-list strong { font-family: var(--serif); font-size: clamp(18px, 1.55vw, 21px); font-weight: 700; }
.identity-go { color: var(--teal); font-size: 15px; font-weight: 700; white-space: nowrap; transform: rotate(-2deg); }
.identity-go b { display: inline-block; margin-left: 6px; transition: transform var(--fast) ease; }
.identity-list a:hover b { transform: translate(3px, 3px); }
.keep-word { white-space: nowrap; }
.hero-actions { margin-top: 32px; }
.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ink);
  border-radius: 0;
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--fast) ease, background var(--fast) ease, border-color var(--fast) ease;
}
.button:hover { color: var(--cloud); background: var(--teal); border-color: var(--teal); }
.button-dark, .button-teal { color: var(--cloud); background: var(--teal); border-color: var(--teal); }
.button-dark:hover, .button-teal:hover { background: var(--night); border-color: var(--night); }
.archive-tab {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  padding: 7px 13px;
  color: var(--night);
  background: var(--cloud);
  border: 1px solid var(--maroon);
  font-size: 13px;
  font-weight: 700;
  box-shadow: 4px 4px 0 var(--coral);
  transform: rotate(-2deg);
}
.hero-world { position: relative; min-height: clamp(530px, 51vw, 650px); isolation: isolate; }
.hero-room {
  position: absolute;
  inset: 5% 0 4% 7%;
  overflow: hidden;
  border-radius: 48% 48% 24px 24px / 28% 28% 24px 24px;
  background: var(--night);
  box-shadow: 0 28px 60px rgba(44, 31, 20, .22);
}
.hero-room::after { position: absolute; inset: 0; content: ""; border: 1px solid rgba(251,246,238,.25); border-radius: inherit; pointer-events: none; }
.hero-logo { position: absolute; z-index: 0; top: -12%; right: -9%; width: 68%; height: 90%; object-fit: contain; opacity: .42; transform: rotate(8deg); transition: transform 480ms cubic-bezier(.2,.75,.2,1), opacity 300ms ease; }
.hero-character { position: absolute; z-index: 2; right: 2%; bottom: -2%; width: 66%; height: 95%; object-fit: contain; object-position: right bottom; filter: drop-shadow(0 22px 30px rgba(0,0,0,.25)); transition: transform 480ms cubic-bezier(.2,.75,.2,1); }
.room-note { position: absolute; z-index: 3; top: 27%; left: 7%; width: 152px; margin: 0; color: var(--cloud); font-family: var(--serif); font-size: 20px; font-weight: 650; line-height: 1.5; transform: rotate(-5deg); }
.room-note::after { display: block; width: 70px; height: 16px; margin: 4px 0 0 24px; content: ""; border-bottom: 2px solid var(--coral); border-radius: 50%; transform: rotate(4deg); }
.hero-ticket { position: absolute; z-index: 4; left: -2px; bottom: 21px; }
.hero-world.is-previewing .hero-logo { opacity: .55; transform: rotate(4deg) translateX(-8px); }
.hero-world.is-previewing .hero-character { transform: translateX(8px); }
.wave-divider { display: block; width: min(1180px, 92vw); height: 70px; margin: -28px auto 8px; object-fit: cover; object-position: center; opacity: .6; }

.section { position: relative; padding: clamp(62px, 7vw, 92px) 0; }
.section > .shell { position: relative; }
.section-heading {
  display: grid;
  grid-template-columns: 164px max-content minmax(60px, 1fr);
  align-items: center;
  gap: 20px;
  margin-bottom: 42px;
}
.section-heading::after { height: 1px; content: ""; background: var(--stone); }
.section-heading .section-index { margin: 2px 0 0; }
.section-heading h2 { margin: 0; font-family: var(--serif); font-size: clamp(36px, 3.25vw, 44px); font-weight: 700; line-height: 1.18; letter-spacing: 0; }
.section-heading-light, .section-heading-light .section-index { color: inherit; }
.paper-section, .course-section, .collab-section, .find-section { background: transparent; }
#tools { padding-bottom: 28px; }
#podcast { padding-top: 52px; padding-bottom: 36px; }
#course, #collab { padding-top: 54px; padding-bottom: 38px; }
#find { padding-top: 54px; }

.tool-list { position: relative; }
.tool-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(420px, 1.18fr);
  align-items: center;
  gap: clamp(48px, 7vw, 88px);
  padding: 28px 0 54px;
}
.tool-card + .tool-card { padding-top: 72px; }
.tool-card + .tool-card::before {
  position: absolute;
  top: 8px;
  left: 50%;
  width: min(42vw, 500px);
  height: 1px;
  content: "";
  background: var(--stone);
  transform: translateX(-50%);
}
.chip-row { display: flex; flex-wrap: wrap; gap: 0; margin: 0 0 20px; }
.chip-row span { color: var(--teal); font-size: 12px; font-weight: 600; }
.chip-row span + span::before { margin: 0 9px; color: var(--stone); content: "·"; }
.tool-copy h3 { margin: 0 0 16px; font-family: var(--serif); font-size: clamp(34px, 3.2vw, 44px); font-weight: 700; line-height: 1.28; }
.tool-intro { max-width: 30em; margin: 0; font-size: 17px; }
.tick-list { display: grid; gap: 8px; margin: 24px 0 28px; padding: 0; list-style: none; }
.tick-list li { position: relative; padding-left: 22px; }
.tick-list li::before { position: absolute; left: 0; content: "—"; color: var(--coral); }
.action-row { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }
.action-row small { max-width: 240px; color: var(--ink-soft); font-size: 13px; line-height: 1.6; }
.video-wrap { position: relative; aspect-ratio: 16 / 9; overflow: hidden; background: var(--night); border: 1px solid var(--stone); box-shadow: 14px 18px 0 rgba(217, 198, 176, .38); }
.video-wrap video { width: 100%; height: 100%; object-fit: cover; }
.video-cover {
  position: absolute;
  inset: 0;
  z-index: 3;
  width: 100%;
  height: 100%;
  padding: 0;
  overflow: visible;
  background: var(--night);
  border: 0;
  cursor: pointer;
  transition: transform 560ms cubic-bezier(.2,.75,.2,1), opacity 300ms ease;
}
.video-cover > img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--normal) ease; }
.video-cover .archive-tab { position: absolute; right: 18px; bottom: 18px; color: var(--night); }
.video-cover:hover > img, .video-cover:focus-visible > img { transform: scale(1.018); }
.video-cover:hover .archive-tab { transform: translate(-2px, -2px) rotate(-2deg); box-shadow: 6px 6px 0 var(--coral); }
.video-cover.is-opening { opacity: .16; transform: translateX(104%); pointer-events: none; }

.dark-section { color: var(--ink); background: transparent; overflow: clip; }
.dark-section .shell { position: relative; }
.show-grid { position: relative; z-index: 3; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; width: calc(100% - 64px); margin-inline: auto; }
.show-card { display: grid; grid-template-columns: 124px 1fr; min-width: 0; align-items: start; gap: 24px; padding: 30px; background: rgba(251, 246, 238, .96); border: 1px solid var(--stone); box-shadow: 8px 10px 0 rgba(217, 198, 176, .34); }
.show-card + .show-card { border-left: 1px solid var(--stone); }
.show-card > img { width: 124px; height: 124px; aspect-ratio: 1; object-fit: cover; }
.show-card > div { min-width: 0; }
.show-card h3 { margin: 0 0 8px; font-family: var(--serif); font-size: 28px; line-height: 1.35; }
.show-card p { max-width: 30em; margin: 0 0 16px; color: var(--ink-soft); }
.show-stats { display: flex; flex-wrap: wrap; gap: 22px; margin: 10px 0 14px; }
.show-stats div { display: grid; }
.show-stats dt { color: var(--ink-soft); font-size: 11px; }
.show-stats dd { margin: 0; font-family: var(--serif); font-size: 21px; font-variant-numeric: tabular-nums; }
.text-link { display: inline-flex; min-height: 44px; align-items: center; color: var(--teal); text-underline-offset: 4px; font-weight: 600; }
.light-link { color: var(--teal); }

.featured-podcast-stage {
  width: calc(100% + 96px);
  margin: -34px -48px 0;
  padding: 96px 48px 58px;
  color: var(--cloud);
  background: var(--night);
  border-radius: 150px 150px 28px 28px / 66px 66px 28px 28px;
  box-shadow: 0 28px 60px rgba(44,31,20,.22);
}
.poster-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin: 0 0 36px; padding-top: 0; color: var(--cloud); }
.poster-heading h3 { margin: 0; font-family: var(--serif); font-size: clamp(34px, 3.5vw, 46px); line-height: 1.28; }
.poster-heading p { max-width: 30em; margin: 0 0 10px; color: rgba(251, 246, 238, .72); }
.poster-draw { display: grid; justify-items: end; }
.poster-draw button { display: inline-flex; min-height: 46px; align-items: center; gap: 14px; padding: 9px 16px; color: var(--night); background: var(--cloud); border: 1px solid var(--cloud); box-shadow: 4px 4px 0 var(--coral); font: inherit; font-weight: 700; cursor: pointer; }
.poster-draw button span { transition: transform var(--fast) ease; }
.poster-draw button[aria-expanded="true"] span { transform: rotate(180deg); }
.answer-book-embed { margin: -4px 0 48px; padding: 12px; overflow: hidden; background: var(--cloud); border: 1px solid rgba(251,246,238,.72); border-radius: 18px; box-shadow: 0 24px 56px rgba(0,0,0,.28); }
.answer-book-embed[hidden] { display: none; }
.answer-book-embed.is-open { animation: answer-book-reveal 360ms cubic-bezier(.2,.8,.2,1) both; }
.answer-book-embed iframe { display: block; width: 100%; height: 460px; border: 0; border-radius: 10px; background: var(--cloud); transition: height 360ms cubic-bezier(.2,.8,.2,1); }
.poster-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: center; gap: clamp(24px, 2.6vw, 38px) clamp(18px, 2.2vw, 30px); width: min(100%, 1080px); margin-inline: auto; }
.episode-poster {
  position: relative;
  display: flex;
  aspect-ratio: 4 / 5;
  flex-direction: column;
  justify-content: flex-end;
  min-width: 0;
  padding: clamp(22px, 2.4vw, 32px);
  overflow: hidden;
  color: var(--cloud);
  border: 10px solid var(--cloud);
  text-decoration: none;
  isolation: isolate;
  box-shadow: 0 22px 46px rgba(0,0,0,.28);
  transform: rotate(var(--tilt, 0deg));
  transition: transform 360ms cubic-bezier(.2,.8,.2,1), box-shadow 360ms ease, opacity var(--normal) ease;
}
.episode-poster::before { position: absolute; inset: 0; z-index: -1; content: ""; background: linear-gradient(to top, rgba(11, 36, 33, .94) 0%, rgba(11, 36, 33, .68) 28%, rgba(11, 36, 33, .12) 60%, transparent 74%); }
.episode-poster img { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: cover; }
.poster-one img, .poster-two img, .poster-three img { object-position: 50% 50%; }
.poster-one { --tilt: -1.3deg; }
.poster-two { --tilt: .7deg; }
.poster-three { --tilt: 1.2deg; justify-content: flex-start; padding-top: clamp(68px, 6vw, 92px); }
.poster-four { --tilt: .8deg; }
.poster-five { --tilt: -1.1deg; }
.poster-six { --tilt: .5deg; }
.poster-three::before { background: linear-gradient(to bottom, rgba(11, 36, 33, .92) 0%, rgba(11, 36, 33, .58) 24%, rgba(11, 36, 33, .1) 51%, transparent 68%); }
.poster-three .poster-hand { top: auto; bottom: 21%; }
.episode-poster:hover, .episode-poster:focus-visible { z-index: 4; transform: rotate(0) translateY(-12px) scale(1.025); box-shadow: 0 34px 70px rgba(0,0,0,.4); }
.poster-meta { position: absolute; top: 18px; left: 18px; right: 18px; display: flex; justify-content: space-between; gap: 12px; color: var(--cloud); font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.poster-hand { position: absolute; top: 25%; right: 10px; padding: 3px 8px; color: var(--night); background: var(--cloud); font-family: var(--serif); font-size: 13px; font-weight: 700; transform: rotate(5deg); }
.poster-label { align-self: flex-start; color: var(--cloud); font-size: 12px; font-weight: 600; }
.episode-poster strong { margin-top: 14px; font-family: var(--serif); font-size: clamp(19px, 1.75vw, 25px); font-weight: 700; line-height: 1.38; }
.episode-poster em { margin-top: 14px; font-style: normal; font-size: 13px; font-weight: 600; }
.guest-block { margin-top: 0; padding-top: 58px; border-top: 0; }
.subheading-light p { margin: 0; color: var(--teal); font-size: 12px; letter-spacing: .1em; }

@keyframes answer-book-reveal {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}
.subheading-light h3 { margin: 6px 0 28px; font-family: var(--serif); font-size: 32px; }
.guest-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--stone); }
.guest-grid a { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 24px; min-height: 84px; align-items: center; padding: 18px 0; border-bottom: 1px solid var(--stone); text-decoration: none; }
.guest-grid a:nth-child(odd) { padding-right: 24px; }
.guest-grid a:nth-child(even) { padding-left: 24px; border-left: 1px solid var(--stone); }
.guest-grid span { color: var(--teal); font-size: 12px; }
.guest-grid strong { font-family: var(--serif); font-size: 16px; font-weight: 600; line-height: 1.55; }

.course-section { overflow: clip; }
.workbook-tabs { display: flex; align-items: end; gap: 8px; padding: 0 10px; border-bottom: 1px solid var(--ink); overflow-x: auto; scrollbar-width: thin; }
.workbook-tabs button { position: relative; flex: 1 0 190px; min-height: 58px; padding: 12px 18px; color: var(--ink-soft); background: var(--sand); border: 1px solid var(--stone); border-bottom: 0; font-family: var(--serif); font-size: 17px; font-weight: 700; text-align: left; cursor: pointer; transform: translateY(6px); transition: color var(--fast) ease, background var(--fast) ease, transform var(--normal) ease; }
.workbook-tabs button span { display: block; margin-bottom: 3px; color: var(--coral); font-family: var(--sans); font-size: 9px; letter-spacing: .12em; }
.workbook-tabs button[aria-selected="true"] { z-index: 2; color: var(--cloud); background: var(--night); border-color: var(--night); transform: none; }
.workbook-tabs button:hover { transform: translateY(2px); }
.course-group { margin-top: 0; }
.js-ready .workbook-page { display: none; }
.js-ready .workbook-page.is-active { display: block; animation: workbook-in 420ms cubic-bezier(.2,.75,.2,1) both; }
@keyframes workbook-in { from { opacity: 0; transform: translateY(18px); } }
.workbook-page { min-height: 420px; padding: clamp(30px, 5vw, 58px); background: rgba(242,235,224,.62); border: 1px solid var(--stone); border-top: 0; box-shadow: 12px 14px 0 rgba(217,198,176,.42); }
.group-heading { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--ink); }
.group-heading p { margin: 0 0 5px; color: var(--teal); font-size: 12px; letter-spacing: .08em; }
.group-heading h3 { margin: 0; font-family: var(--serif); font-size: clamp(28px, 3vw, 36px); line-height: 1.35; }
.group-heading > strong { color: var(--maroon); font-size: 14px; font-weight: 600; }
.course-cover-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--stone); border-left: 1px solid var(--stone); margin-top: 32px; }
.course-cover-grid figure { min-width: 0; margin: 0; padding: 12px; border-right: 1px solid var(--stone); border-bottom: 1px solid var(--stone); }
.course-cover-grid img { width: 100%; height: auto; aspect-ratio: 640 / 401; object-fit: contain; background: var(--sand); }
.course-cover-grid figcaption { padding: 12px 0 2px; font-size: 13px; font-weight: 500; }
.work-grid, .article-grid, .product-grid { display: grid; border-top: 1px solid var(--stone); border-left: 1px solid var(--stone); margin-top: 32px; }
.work-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.article-grid, .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.work-card, .article-grid a, .product-grid article { min-width: 0; padding: 24px; background: transparent; border-right: 1px solid var(--stone); border-bottom: 1px solid var(--stone); }
.work-image { display: grid; width: 100%; min-width: 0; place-items: center; overflow: hidden; background: var(--sand); }
.work-image img { width: 100%; height: 100%; min-width: 0; object-fit: contain; }
.work-image-wide, .work-image-square { aspect-ratio: 700 / 404; }
.work-card h4 { margin: 20px 0 8px; font-family: var(--serif); font-size: 21px; line-height: 1.4; }
.work-card p { margin: 0 0 8px; color: var(--ink-soft); }
.article-grid a { position: relative; min-height: 176px; text-decoration: none; transition: background var(--fast) ease; }
.article-grid a:hover { background: var(--sand); }
.article-grid span { display: block; margin-bottom: 22px; color: var(--teal); font-size: 12px; }
.article-grid strong { display: block; max-width: 94%; font-family: var(--serif); font-size: 18px; line-height: 1.55; }
.article-grid b { position: absolute; right: 20px; bottom: 18px; color: var(--coral); }
.product-grid article { min-height: 190px; }
.product-top { display: flex; justify-content: space-between; gap: 16px; }
.product-top h4 { margin: 0; font-family: var(--serif); font-size: 19px; line-height: 1.45; }
.product-top span { flex: none; align-self: flex-start; color: var(--maroon); font-size: 12px; font-weight: 600; }
.product-grid article > p { color: var(--ink-soft); }
.mini-links { display: flex; flex-wrap: wrap; gap: 8px 14px; }
.mini-links a { display: inline-flex; min-width: 44px; min-height: 44px; align-items: center; color: var(--teal); font-size: 13px; font-weight: 600; text-underline-offset: 3px; }

.collab-section { color: var(--ink); background: transparent; }
.service-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--stone); border-left: 1px solid var(--stone); }
.service-grid article { min-height: 176px; padding: 24px 20px; border-right: 1px solid var(--stone); border-bottom: 1px solid var(--stone); }
.service-grid span { color: var(--teal); font-size: 12px; }
.service-grid h3 { margin: 24px 0 10px; font-family: var(--serif); font-size: 19px; line-height: 1.45; }
.service-grid p { margin: 0; color: var(--ink-soft); font-size: 14px; }
.brand-wall { display: grid; grid-template-columns: 150px 1fr; align-items: center; gap: 24px; margin-top: 32px; padding: 22px 0; border-block: 1px solid var(--stone); }
.brand-wall > p { margin: 0; font-weight: 600; }
.brand-wall > div { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.brand-wall span { font-size: 13px; color: var(--ink-soft); }
.door-stage {
  position: relative;
  display: grid;
  grid-template-columns: .9fr 1fr;
  align-items: center;
  gap: clamp(24px, 4vw, 56px);
  min-height: 440px;
  margin-top: 46px;
  padding: clamp(32px, 5vw, 64px);
  color: var(--cloud);
  background: var(--night);
  border-radius: 28px 28px 140px 28px / 28px 28px 72px 28px;
  overflow: hidden;
}
.door-copy { position: relative; z-index: 3; }
.door-note { margin: 0 0 14px; color: #aedbd6; font-size: 12px; font-weight: 600; }
.door-copy h3 { margin: 0 0 14px; font-family: var(--serif); font-size: clamp(30px, 3.4vw, 44px); line-height: 1.25; }
.door-copy > p:not(.door-note) { color: rgba(251, 246, 238, .78); }
.door-button { margin-top: 18px; color: var(--night); background: var(--cloud); border-color: var(--cloud); }
.door-button:hover { color: var(--cloud); background: var(--teal); border-color: var(--teal); }
.door-scene { position: relative; width: 100%; aspect-ratio: 654 / 704; transition: transform 560ms cubic-bezier(.2,.72,.15,1), opacity 560ms ease; }
.door-asset { width: 100%; height: 100%; object-fit: contain; user-select: none; }
.door-portal { position: absolute; z-index: 2; left: 24.1%; top: 12.2%; width: 24.5%; height: 47.9%; display: grid; place-items: center; overflow: hidden; color: var(--cloud); background: radial-gradient(circle at 52% 24%, #4f827b 0 4%, transparent 5%), linear-gradient(145deg, #183f39, #081c19 75%); border-radius: 48% 48% 3px 3px / 23% 23% 3px 3px; box-shadow: inset 0 0 34px rgba(0,0,0,.6); opacity: 0; transition: opacity 220ms ease 180ms; }
.door-portal span { width: 86%; font-family: var(--serif); font-size: clamp(11px, 1.35vw, 17px); font-weight: 700; line-height: 1.5; text-align: center; opacity: 0; transform: translateY(10px); transition: opacity 300ms ease 250ms, transform 300ms ease 250ms; }
.door-hit { position: absolute; z-index: 4; left: 24.1%; top: 12.2%; width: 24.5%; height: 47.9%; padding: 0; background: transparent; border: 0; border-radius: 48% 48% 3px 3px / 23% 23% 3px 3px; cursor: pointer; perspective: 760px; }
.door-panel { position: absolute; inset: 0; overflow: hidden; border-radius: inherit; transform-origin: left center; transform-style: preserve-3d; transition: transform 680ms cubic-bezier(.2,.78,.2,1), box-shadow 680ms ease; }
.door-panel img { position: absolute; top: -25.5%; left: -98.4%; width: 408.2%; max-width: none; height: auto; }
.door-hint { position: absolute; z-index: 6; left: 29.5%; top: 29%; min-height: 40px; padding: 8px 12px; display: flex; align-items: center; color: var(--night); background: var(--cloud); border: 1px solid var(--maroon); font-family: var(--serif); font-size: 13px; font-weight: 700; pointer-events: none; transform: rotate(-5deg); box-shadow: 3px 3px 0 var(--coral); transition: opacity var(--fast) ease; }
.door-stage.is-open .door-portal { opacity: 1; }
.door-stage.is-open .door-portal span { opacity: 1; transform: none; }
.door-stage.is-open .door-panel { transform: rotateY(-78deg); box-shadow: 20px 10px 28px rgba(0,0,0,.34); }
.door-stage.is-open .door-hint { opacity: 0; }
.business-card {
  position: absolute;
  right: clamp(32px, 5vw, 64px);
  top: 50%;
  z-index: 4;
  width: min(35%, 390px);
  min-width: 340px;
  padding: 30px;
  color: var(--ink);
  background: var(--cloud);
  border: 1px solid var(--stone);
  opacity: 0;
  visibility: hidden;
  transform: translate(36px, -50%);
  transition: opacity var(--normal) ease 100ms, transform 480ms cubic-bezier(.2,.8,.2,1) 80ms, visibility 0s linear 520ms;
}
.door-stage.is-open .business-card { opacity: 1; visibility: visible; transform: translate(0, -50%); transition-delay: 100ms; }
.door-stage.is-open .door-scene { transform: translateX(-18%); }
.business-card > p { margin: 0 0 4px; color: var(--teal); font-size: 10px; font-weight: 600; letter-spacing: .12em; }
.business-card h4 { margin: 0 0 20px; font-family: var(--serif); font-size: 27px; }
.contact-line { display: grid; grid-template-columns: 42px minmax(0, 1fr) auto; align-items: center; gap: 8px; margin: 12px 0; padding-bottom: 10px; border-bottom: 1px solid var(--stone); }
.contact-line span { color: var(--ink-soft); font-size: 11px; }
.contact-line code { min-width: 0; font-family: var(--sans); font-weight: 600; font-variant-numeric: tabular-nums; }
.contact-line button { min-width: 48px; min-height: 44px; padding: 5px 8px; color: var(--cloud); background: var(--teal); border: 0; cursor: pointer; }
.business-card small { display: block; color: var(--ink-soft); }
.copy-status { display: block; min-height: 1.5em; margin-top: 8px; color: var(--teal); font-size: 12px; }
.noscript-contact { grid-column: 1 / -1; }

.find-section { padding-bottom: 112px; }
.find-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--stone); border-left: 1px solid var(--stone); }
.find-grid article { min-height: 210px; padding: 24px; border-right: 1px solid var(--stone); border-bottom: 1px solid var(--stone); }
.find-grid img { width: 32px; height: 32px; object-fit: contain; margin-bottom: 20px; }
.find-grid span { color: var(--teal); font-size: 12px; }
.find-grid h3 { margin: 6px 0 8px; font-family: var(--serif); font-size: 22px; }
.find-grid p { color: var(--ink-soft); }
.thought-evolution { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 32px; padding: 22px 24px; color: var(--cloud); background: var(--night); }
.thought-evolution p { margin: 0; color: rgba(251, 246, 238, .66); font-size: 11px; letter-spacing: .08em; }
.thought-evolution h3 { margin: 2px 0 0; font-family: var(--serif); font-size: clamp(24px, 3vw, 32px); line-height: 1.25; }
.thought-timeline-open { flex: 0 0 auto; min-height: 46px; padding: 10px 18px; color: var(--night); background: var(--cloud); border: 0; cursor: pointer; font-weight: 700; }
.thought-timeline-open span { display: inline-block; margin-left: 12px; transition: transform var(--fast) ease; }
.thought-timeline-open:hover span, .thought-timeline-open:focus-visible span { transform: translate(3px, -3px); }
.thought-timeline-dialog { width: min(1160px, calc(100vw - 32px)); height: min(92dvh, 920px); max-width: none; max-height: none; margin: auto; padding: 0; color: var(--ink); background: var(--cloud); border: 1px solid var(--stone); box-shadow: 0 24px 90px rgba(11, 36, 33, .35); }
.thought-timeline-dialog::backdrop { background: rgba(11, 36, 33, .74); backdrop-filter: blur(5px); }
.thought-timeline-dialog-shell { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; height: 100%; }
.thought-timeline-dialog header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 18px 22px; border-bottom: 1px solid var(--stone); }
.thought-timeline-dialog header p { margin: 0; color: var(--teal); font-size: 10px; font-weight: 700; letter-spacing: .1em; }
.thought-timeline-dialog h2 { margin: 2px 0 0; font-family: var(--serif); font-size: 26px; line-height: 1.2; }
.thought-timeline-dialog header button { min-width: 88px; min-height: 44px; padding: 8px 12px; color: var(--cloud); background: var(--teal); border: 0; cursor: pointer; }
.thought-timeline-dialog header button span { margin-left: 8px; font-size: 20px; font-weight: 300; }
.thought-timeline-dialog iframe { display: block; width: 100%; height: 100%; background: var(--cloud); border: 0; }
.thought-timeline-dialog footer { display: flex; justify-content: flex-end; padding: 11px 22px; border-top: 1px solid var(--stone); }
.consult-card { display: grid; grid-template-columns: .78fr 1fr; gap: 42px; margin-top: 32px; padding: clamp(30px, 5vw, 48px); background: var(--sand); border: 1px solid var(--stone); }
.consult-card > div:first-child { border-right: 1px solid var(--stone); }
.consult-card > div:first-child p { color: var(--maroon); font-size: 11px; letter-spacing: .1em; }
.consult-card h3 { margin: 6px 0 12px; font-family: var(--serif); font-size: 34px; }
.consult-card p { margin-top: 0; }
.consult-card code { font-family: var(--sans); font-variant-numeric: tabular-nums; }
.consult-card .button { margin-top: 8px; }
.about-card { display: grid; grid-template-columns: .92fr 1.08fr; align-items: center; gap: clamp(56px, 8vw, 104px); margin-top: 112px; }
.about-photos { display: grid; grid-template-columns: 1.12fr .88fr; align-items: end; gap: 12px; }
.about-photos figure { margin: 0; }
.about-photos img { width: 100%; height: 100%; object-fit: cover; }
.photo-sea { aspect-ratio: 3 / 4; }
.photo-forest { aspect-ratio: 482 / 720; }
.about-photos > span { display: none; }
.about-copy h3 { margin: 0; font-family: var(--serif); font-size: clamp(30px, 3.6vw, 44px); line-height: 1.35; }
.about-copy ul { display: grid; gap: 14px; margin: 32px 0 0; padding: 0; list-style: none; counter-reset: about; }
.about-copy li { position: relative; padding-left: 42px; counter-increment: about; }
.about-copy li::before { position: absolute; left: 0; top: 0; content: counter(about, decimal-leading-zero); color: var(--coral); font-family: var(--serif); font-size: 18px; }

.site-footer { padding: 32px 0; color: var(--cloud); background: var(--night); }
.site-footer .shell { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-footer strong { font-family: var(--serif); font-size: 18px; }
.site-footer span { color: rgba(251, 246, 238, .64); font-size: 12px; }
.site-footer a { display: inline-flex; min-height: 44px; align-items: center; color: var(--cloud); font-size: 12px; }

@media (max-width: 1020px) {
  .section { padding-block: 72px; }
  .section-heading { grid-template-columns: 132px max-content minmax(40px, 1fr); margin-bottom: 42px; }
  .hero-grid { grid-template-columns: minmax(0, 1.1fr) minmax(280px, .7fr); gap: 40px; }
  .identity-list a { grid-template-columns: 112px minmax(0, 1fr) auto; }
  .tool-card { grid-template-columns: 1fr; gap: 40px; padding-block: 48px; }
  .show-grid { grid-template-columns: 1fr; }
  .show-card + .show-card { border-top: 1px solid var(--stone); border-left: 0; }
  .course-cover-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .workbook-tabs { padding-inline: 0; }
  .workbook-tabs button { flex-basis: 168px; }
  .workbook-page { padding: 36px 28px; }
  .work-grid, .article-grid, .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .course-group { margin-top: 64px; }
  .service-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .service-grid article { grid-column: span 2; }
  .service-grid article:nth-child(4), .service-grid article:nth-child(5) { grid-column: span 3; }
  .door-stage { grid-template-columns: .8fr 1fr; padding: 32px 24px; }
  .business-card { right: 24px; width: min(42%, 350px); min-width: 290px; padding: 24px 18px; }
  .contact-line { grid-template-columns: 36px minmax(0, 1fr); }
  .contact-line button { grid-column: 2; justify-self: start; }
  .find-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 761px) and (max-width: 900px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(240px, .55fr); gap: 28px; }
  .hero h1 { font-size: 50px; }
  .featured-podcast-stage {
    width: calc(100% + 64px);
    margin-inline: -32px;
    padding-inline: 32px;
    overflow: hidden;
  }
  .poster-grid {
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: min(44vw, 340px);
    gap: 18px;
    margin-inline: -32px;
    padding: 4px 32px 20px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-snap-type: inline mandatory;
    scrollbar-width: thin;
  }
  .episode-poster { scroll-snap-align: start; }
}

@media (max-width: 760px) {
  :root { --shell: min(100% - 32px, 620px); }
  html { scroll-padding-top: 68px; }
  .header-inner { min-height: 64px; }
  .brand { min-height: 48px; }
  .brand img { width: 29px; height: 44px; }
  .brand > span { font-size: 16px; }
  .nav-toggle {
    display: grid;
    width: 44px;
    height: 44px;
    place-content: center;
    gap: 5px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--stone);
    cursor: pointer;
  }
  .nav-toggle span { width: 20px; height: 2px; background: var(--ink); transition: transform var(--fast) ease, opacity var(--fast) ease; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .site-nav {
    position: fixed;
    top: 64px;
    right: 0;
    left: 0;
    height: calc(100dvh - 64px);
    display: grid;
    align-content: start;
    gap: 0;
    padding: 8px 16px 20px;
    background: var(--cloud);
    border-bottom: 1px solid var(--stone);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--fast) ease, transform var(--fast) ease, visibility 0s linear var(--fast);
  }
  .site-nav.is-open { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
  .site-nav a { padding: 14px 6px; border-bottom: 1px solid var(--stone); font-family: var(--serif); font-size: 17px; }
  .site-nav a::after { display: none; }

  .hero { padding: 48px 0 56px; }
  .hero-grid { display: flex; flex-direction: column; gap: 28px; }
  .hero h1 { font-size: clamp(38px, 10.6vw, 48px); }
  .hero-lead { margin: 18px 0 26px; }
  .identity-list a { grid-template-columns: 1fr auto; gap: 4px 14px; padding: 13px 0; }
  .identity-en { grid-column: 1; }
  .identity-list strong { grid-column: 1; grid-row: 2; }
  .identity-go { grid-column: 2; grid-row: 1 / span 2; }
  .hero-actions { margin-top: 26px; }
  .hero-world { width: min(94vw, 430px); min-height: 460px; align-self: center; }
  .hero-room { inset: 4% 0 3% 5%; }
  .room-note { top: 22%; left: 6%; width: 130px; font-size: 17px; }
  .hero-ticket { left: 0; bottom: 18px; }
  .wave-divider { height: 56px; margin-top: -14px; }
  .section { padding: 56px 0; }
  .section-heading { grid-template-columns: max-content minmax(40px, 1fr); gap: 9px 14px; margin-bottom: 34px; }
  .section-heading .section-index { grid-column: 1 / -1; }
  .section-heading h2 { font-size: clamp(34px, 9.2vw, 40px); }
  .tool-card { gap: 32px; padding: 34px 0 46px; }
  .tool-card + .tool-card { padding-top: 62px; }
  .video-wrap { box-shadow: 8px 10px 0 rgba(217, 198, 176, .38); }
  .video-cover .archive-tab { right: 12px; bottom: 12px; }
  .action-row { align-items: flex-start; flex-direction: column; }
  .show-card { grid-template-columns: 86px 1fr; gap: 16px; padding: 20px; }
  .show-card > img { width: 86px; height: 86px; }
  .show-stats { grid-column: 1 / -1; gap: 14px; }
  .featured-podcast-stage {
    width: calc(100% + 32px);
    margin: -22px -16px 0;
    padding: 64px 16px 48px;
    border-radius: 64px 64px 20px 20px / 34px 34px 20px 20px;
    overflow: hidden;
  }
  .poster-heading { display: block; margin-top: 0; }
  .poster-draw { justify-items: start; margin-top: 10px; }
  .poster-heading p { margin-top: 8px; }
  .answer-book-embed { margin: 0 0 34px; padding: 8px; border-radius: 14px; }
  .answer-book-embed iframe { height: 420px; border-radius: 8px; }
  .poster-grid {
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: min(82vw, 360px);
    gap: 16px;
    width: auto;
    margin: 0 -16px;
    padding: 4px 16px 20px;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scroll-snap-type: inline mandatory;
    scrollbar-width: thin;
  }
  .episode-poster { scroll-snap-align: start; border-width: 8px; transform: none; }
  .poster-two { transform: none; }
  .episode-poster:hover, .episode-poster:focus-visible { transform: translateY(-8px) scale(1.01); }
  .episode-poster strong { font-size: clamp(22px, 6.4vw, 28px); }
  .guest-block { margin-top: 56px; }
  .guest-grid { grid-template-columns: 1fr; }
  .guest-grid a { grid-template-columns: 88px minmax(0, 1fr); padding: 18px 0 !important; border-left: 0 !important; }
  .group-heading { grid-template-columns: 1fr; align-items: start; gap: 12px; }
  .workbook-tabs { margin-inline: -4px; }
  .workbook-tabs button { flex: 0 0 46%; min-width: 150px; font-size: 15px; }
  .workbook-page { min-height: 0; padding: 28px 18px; box-shadow: 7px 8px 0 rgba(217,198,176,.42); }
  .course-cover-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .work-grid, .article-grid, .product-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .service-grid article, .service-grid article:nth-child(4) { grid-column: auto; }
  .service-grid article:last-child { grid-column: 1 / -1; }
  .service-grid article { min-height: 132px; }
  .brand-wall { grid-template-columns: 1fr; gap: 12px; }
  .door-stage { grid-template-columns: 1fr; min-height: 0; padding: 32px 24px; overflow: visible; }
  .door-scene { width: min(100%, 340px); margin-inline: auto; }
  .business-card { position: relative; inset: auto; width: 100%; min-width: 0; margin-top: -12px; transform: translateY(-24px); }
  .business-card[aria-hidden="true"] { display: none; }
  .door-stage.is-open .business-card { display: block; transform: none; }
  .door-stage.is-open .door-scene { transform: none; }
  .contact-line { grid-template-columns: 42px minmax(0, 1fr) auto; }
  .contact-line code { overflow-wrap: normal; font-size: 12px; white-space: nowrap; }
  .contact-line button { grid-column: auto; justify-self: auto; }
  .find-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .thought-evolution { padding: 18px; }
  .thought-timeline-dialog { width: calc(100vw - 16px); height: calc(100dvh - 16px); }
  .thought-timeline-dialog header { padding: 14px 16px; }
  .thought-timeline-dialog h2 { font-size: 22px; }
  .thought-timeline-dialog footer { padding-inline: 16px; }
  .consult-card { grid-template-columns: 1fr; gap: 24px; }
  .consult-card > div:first-child { padding-bottom: 24px; border-right: 0; border-bottom: 1px solid var(--stone); }
  .about-card { grid-template-columns: 1fr; gap: 48px; margin-top: 88px; }
  .about-photos { max-width: 520px; }
  .site-footer .shell { align-items: flex-start; flex-direction: column; gap: 8px; }
}

@media (max-width: 420px) {
  :root { --shell: calc(100% - 24px); }
  .hero h1 { font-size: 36px; }
  .hero-world { min-height: 410px; }
  .featured-podcast-stage { width: calc(100% + 24px); margin-inline: -12px; padding-inline: 12px; }
  .poster-grid { margin-inline: -12px; padding-inline: 12px; }
  .find-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .find-grid article { min-height: 188px; padding: 18px 14px; }
  .contact-line { grid-template-columns: 38px minmax(0, 1fr); }
  .contact-line code { font-size: 11px; }
  .contact-line button { grid-column: 2; justify-self: start; }
}

@media (max-width: 340px) {
  .hero h1 { font-size: 34px; }
  .hero-world { min-height: 390px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .episode-poster, .door-scene, .business-card, .hero-logo, .hero-character { transform: none !important; }
  .door-stage.is-open .door-panel { transform: none !important; opacity: 0; }
}