/* ==========================================================
   笹木椿｜茶道家 — Portfolio
   トーン: 静けさ / 余白 / 凛としたやわらかさ / 現代的な日本文化
   ========================================================== */

:root {
  --kinari: #faf7f0;      /* 生成り */
  --white: #ffffff;
  --sumi: #2b2a26;        /* 墨色 */
  --sumi-soft: #55534c;
  --matcha: #3a5a40;      /* 深い緑 */
  --matcha-deep: #2e4934;
  --take: #a89f78;        /* 竹色 */
  --tsubaki: #a63c47;     /* 椿(差し色) */
  --kincha: #c9a24b;
  --line: rgba(43, 42, 38, 0.14);

  --font-mincho: "Shippori Mincho", "Hiragino Mincho ProN", serif;
  --font-gothic: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
  --font-en: "EB Garamond", serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-gothic);
  font-weight: 300;
  color: var(--sumi);
  background: var(--kinari);
  line-height: 2;
  letter-spacing: 0.06em;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
em { font-style: normal; }

.container {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 48px);
}

.pc { display: inline; }
.sp { display: none; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 4vw, 44px);
  transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
}

.site-header.is-scrolled {
  background: rgba(250, 247, 240, 0.92);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--line);
  padding-top: 12px;
  padding-bottom: 12px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.tsubaki-mark { width: 30px; height: 30px; }

.logo-text {
  font-family: var(--font-mincho);
  font-size: 1.05rem;
  letter-spacing: 0.14em;
}

.logo-text small {
  margin-left: 0.7em;
  font-size: 0.68rem;
  color: var(--sumi-soft);
  letter-spacing: 0.2em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.4vw, 30px);
  font-family: var(--font-en);
  font-size: 0.92rem;
  letter-spacing: 0.14em;
}

.site-nav a {
  position: relative;
  padding: 4px 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--matcha);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s ease;
}

.site-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-nav .nav-cta {
  border: 1px solid var(--matcha);
  color: var(--matcha-deep);
  padding: 6px 18px;
  border-radius: 999px;
  transition: background 0.3s ease, color 0.3s ease;
}
.site-nav .nav-cta::after { display: none; }
.site-nav .nav-cta:hover { background: var(--matcha); color: var(--kinari); }

.site-nav .nav-lang {
  color: var(--take);
  letter-spacing: 0.2em;
}

.nav-toggle { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-gothic);
  font-weight: 400;
  font-size: 0.92rem;
  letter-spacing: 0.12em;
  padding: 14px 34px;
  border-radius: 999px;
  transition: opacity 0.3s ease, background 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--matcha-deep);
  color: var(--kinari);
}
.btn-primary:hover { background: var(--matcha); }

.btn-ghost {
  border: 1px solid var(--sumi-soft);
  color: var(--sumi);
}
.btn-ghost:hover { border-color: var(--matcha); color: var(--matcha-deep); }

.btn-lg { padding: 18px 52px; font-size: 1rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(120px, 16vh, 180px) clamp(24px, 6vw, 72px) 120px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 50% at 85% 20%, rgba(58, 90, 64, 0.07), transparent 70%),
    radial-gradient(ellipse 50% 40% at 10% 90%, rgba(166, 60, 71, 0.05), transparent 70%),
    var(--kinari);
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  max-width: 1120px;
  margin: 0 auto;
  width: 100%;
}

.hero-en {
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.34em;
  color: var(--take);
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero-copy {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: clamp(2rem, 4.6vw, 3.3rem);
  line-height: 1.7;
  letter-spacing: 0.12em;
  margin-bottom: 36px;
}

.hero-copy .line {
  display: block;
  opacity: 0;
  transform: translateY(0.6em);
  animation: rise 1.1s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
.hero-copy .line:nth-child(2) { animation-delay: 0.22s; }
.hero-copy .line:nth-child(3) { animation-delay: 0.44s; }

@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

.hero-copy-en {
  font-size: clamp(1.7rem, 3.6vw, 2.7rem);
  letter-spacing: 0.04em;
  font-family: var(--font-en);
}

.hero-en-copy {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--matcha-deep);
  margin: -14px 0 26px;
  opacity: 0;
  animation: fade 1.4s ease 0.7s forwards;
}

.hero-lead {
  font-size: 0.95rem;
  color: var(--sumi-soft);
  max-width: 36em;
  margin-bottom: 44px;
  opacity: 0;
  animation: fade 1.4s ease 0.8s forwards;
}

.hero-cred {
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  line-height: 2;
  color: var(--matcha-deep);
  border-left: 2px solid var(--take);
  padding-left: 16px;
  margin: -22px 0 40px;
  opacity: 0;
  animation: fade 1.4s ease 0.95s forwards;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  opacity: 0;
  animation: fade 1.4s ease 1.1s forwards;
}

@keyframes fade { to { opacity: 1; } }

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  gap: 36px;
  flex-shrink: 0;
  opacity: 0;
  animation: fade 1.8s ease 0.6s forwards;
}

.vertical-text {
  writing-mode: vertical-rl;
  font-family: var(--font-mincho);
  font-size: 1rem;
  letter-spacing: 0.42em;
  color: var(--sumi-soft);
  height: 21em;
}

.hero-photo {
  position: relative;
  width: clamp(240px, 26vw, 330px);
  aspect-ratio: 3 / 4;
  border-radius: 2px;
  overflow: visible;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 24px 60px rgba(43, 42, 38, 0.18);
}

.hero-photo::after {
  content: "";
  position: absolute;
  inset: 14px -14px -14px 14px;
  border: 1px solid var(--take);
  border-radius: 2px;
  z-index: -1;
}

.hero-name {
  position: absolute;
  left: clamp(24px, 6vw, 72px);
  bottom: 40px;
  font-family: var(--font-mincho);
  font-size: 1.1rem;
  letter-spacing: 0.2em;
}

.hero-name span { color: var(--sumi-soft); font-size: 0.9rem; }

.hero-name em {
  display: block;
  font-size: 0.72rem;
  color: var(--take);
  letter-spacing: 0.18em;
  margin-top: 4px;
}

/* ---------- Sections (common) ---------- */
.section { padding: clamp(90px, 13vh, 150px) 0; }

.section-label {
  font-family: var(--font-en);
  font-size: 0.82rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--take);
  margin-bottom: 18px;
}

.section-label.light { color: rgba(250, 247, 240, 0.55); }

.section-title {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.8;
  letter-spacing: 0.1em;
  margin-bottom: 42px;
}

.section-title.light { color: var(--kinari); }

.title-en {
  display: block;
  font-family: var(--font-en);
  font-size: 0.9rem;
  letter-spacing: 0.3em;
  color: var(--take);
  margin-top: 6px;
}

.title-sub {
  font-size: 0.6em;
  color: var(--sumi-soft);
  letter-spacing: 0.08em;
}

.section-lead {
  color: var(--sumi-soft);
  margin: -18px 0 48px;
}

/* ---------- Figure captions ---------- */
.philosophy-photo figcaption,
.hotels-photo figcaption {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  margin-top: 14px;
}

/* ---------- About ---------- */
.about { background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: start;
}

.about-side { position: sticky; top: 120px; }

.about-tagline {
  font-size: 0.88rem;
  letter-spacing: 0.1em;
  color: var(--matcha-deep);
  margin: -24px 0 26px;
}

.about-photo {
  margin: 4px 0 26px;
}

.about-photo img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 18%;
  border-radius: 2px;
}

.about-facts {
  border-top: 1px solid var(--line);
  margin-top: 8px;
}

.about-facts li {
  border-bottom: 1px solid var(--line);
  padding: 13px 4px;
  font-size: 0.9rem;
  color: var(--sumi-soft);
  letter-spacing: 0.12em;
}

.about-heading {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: 1.3rem;
  letter-spacing: 0.12em;
  margin-bottom: 30px;
  color: var(--matcha-deep);
}

.about-main p { margin-bottom: 1.6em; font-size: 0.96rem; }

.about-titles {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
  margin-top: 40px;
}

.about-titles li {
  font-family: var(--font-en);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--matcha-deep);
  border: 1px solid rgba(58, 90, 64, 0.25);
  border-radius: 999px;
  padding: 6px 18px;
}

/* ---------- Philosophy ---------- */
.philosophy {
  background:
    radial-gradient(ellipse 70% 60% at 15% 0%, rgba(250, 247, 240, 0.06), transparent 60%),
    var(--matcha-deep);
  color: var(--kinari);
}

.philosophy-intro {
  max-width: 620px;
  color: rgba(250, 247, 240, 0.82);
  margin-bottom: 70px;
}

.philosophy-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(36px, 5vw, 64px) clamp(36px, 6vw, 80px);
  margin-bottom: 70px;
}

.philosophy-list li {
  border-top: 1px solid rgba(250, 247, 240, 0.25);
  padding-top: 26px;
  position: relative;
}

.ph-num {
  font-family: var(--font-mincho);
  font-size: 0.85rem;
  color: var(--take);
  letter-spacing: 0.3em;
}

.philosophy-list h3 {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: 1.12rem;
  letter-spacing: 0.08em;
  line-height: 1.9;
  margin: 12px 0 14px;
}

.philosophy-list p {
  font-size: 0.9rem;
  color: rgba(250, 247, 240, 0.72);
}

.philosophy-close {
  max-width: 620px;
  font-family: var(--font-mincho);
  font-size: 1.02rem;
  line-height: 2.3;
  color: rgba(250, 247, 240, 0.92);
}

.philosophy-photo {
  margin-top: 70px;
}

.philosophy-photo img {
  width: 100%;
  max-height: 440px;
  object-fit: cover;
  object-position: 50% 62%;
  border-radius: 2px;
}

.philosophy-photo figcaption {
  color: rgba(250, 247, 240, 0.55);
}

/* ---------- Activities ---------- */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(24px, 3.4vw, 40px);
}

.activity-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: clamp(30px, 3.6vw, 44px);
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.4s ease, transform 0.4s ease;
}

.activity-photo {
  margin: calc(clamp(30px, 3.6vw, 44px) * -1) calc(clamp(30px, 3.6vw, 44px) * -1) 28px;
}

.activity-photo img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.activity-card:hover {
  box-shadow: 0 14px 40px rgba(43, 42, 38, 0.08);
  transform: translateY(-3px);
}

.activity-index {
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  color: var(--tsubaki);
}

.activity-card h3 {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: 1.18rem;
  letter-spacing: 0.06em;
  margin: 14px 0 16px;
}

.card-sub {
  display: block;
  font-family: var(--font-gothic);
  font-weight: 300;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--take);
  margin-top: 6px;
}

.card-target {
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--matcha-deep);
  border: 1px solid rgba(58, 90, 64, 0.25);
  border-radius: 999px;
  display: inline-block;
  padding: 4px 16px;
  margin-bottom: 18px;
}

.card-target em { color: var(--take); margin-right: 0.6em; font-size: 0.9em; }

.activity-card > p {
  font-size: 0.92rem;
  color: var(--sumi-soft);
  margin-bottom: 22px;
}

.activity-card ul {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.activity-card li {
  font-size: 0.86rem;
  padding: 5px 0 5px 1.2em;
  position: relative;
  color: var(--sumi);
}

.activity-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.95em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--take);
}

/* ---------- Hotels ---------- */
.hotels {
  background:
    radial-gradient(ellipse 70% 60% at 85% 100%, rgba(250, 247, 240, 0.05), transparent 60%),
    var(--sumi);
  color: var(--kinari);
}

.hotels-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
}

.hotels-body > p {
  font-size: 0.95rem;
  color: rgba(250, 247, 240, 0.82);
  margin-bottom: 1.5em;
}

.hotels-body em {
  border-bottom: 1px solid var(--tsubaki);
  padding-bottom: 2px;
}

.hotels-en {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 0.95rem;
  line-height: 1.95;
  color: rgba(250, 247, 240, 0.6) !important;
  border-left: 1px solid rgba(250, 247, 240, 0.25);
  padding-left: 20px;
}

.hotels-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 38px;
}

.hotels-list li {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  border: 1px solid rgba(250, 247, 240, 0.3);
  border-radius: 999px;
  padding: 7px 18px;
  color: rgba(250, 247, 240, 0.85);
}

.hotels-cta { display: flex; flex-wrap: wrap; gap: 14px; }

.btn-light {
  background: var(--kinari);
  color: var(--sumi);
}
.btn-light:hover { background: var(--white); }

.btn-light-ghost {
  border: 1px solid rgba(250, 247, 240, 0.55);
  color: var(--kinari);
}
.btn-light-ghost:hover { border-color: var(--kinari); }

.hotels-photo img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 2px;
}

.hotels-photo figcaption { color: rgba(250, 247, 240, 0.5); }

/* ---------- Executives ---------- */
.executives { background: var(--white); }

.exec-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: start;
}

.exec-body > p {
  font-size: 0.96rem;
  margin-bottom: 1.6em;
}

.exec-cta { margin-top: 36px; }

.exec-themes {
  background: var(--kinari);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: clamp(28px, 3vw, 40px);
}

.exec-themes h3 {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.16em;
  margin-bottom: 18px;
  color: var(--matcha-deep);
}

.exec-themes li {
  font-size: 0.88rem;
  padding: 10px 0 10px 1.3em;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.exec-themes li:last-child { border-bottom: none; }

.exec-themes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.35em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--tsubaki);
}

/* ---------- Use Cases ---------- */
.usecases { background: var(--kinari); }

.usecase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 clamp(36px, 6vw, 80px);
  max-width: 960px;
}

.usecase-grid li {
  display: flex;
  align-items: baseline;
  gap: 18px;
  font-family: var(--font-mincho);
  font-size: 1.02rem;
  letter-spacing: 0.08em;
  line-height: 1.9;
  padding: 22px 4px;
  border-top: 1px solid var(--line);
}

.usecase-grid li span {
  font-family: var(--font-en);
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  color: var(--tsubaki);
  flex-shrink: 0;
}

/* ---------- Programs ---------- */
.program-table {
  border-top: 1px solid var(--line);
  max-width: 860px;
}

.program-table > div {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 20px;
  padding: 18px 6px;
  border-bottom: 1px solid var(--line);
}

.program-table dt {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: 0.92rem;
  letter-spacing: 0.12em;
  color: var(--matcha-deep);
}

.program-table dd {
  font-size: 0.92rem;
  color: var(--sumi);
}

/* ---------- Podcast ---------- */
.podcast { background: var(--white); }

.podcast-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: clamp(40px, 6vw, 90px);
  align-items: center;
}

.podcast-visual { display: flex; justify-content: center; }

.podcast-art {
  width: clamp(220px, 26vw, 300px);
}

.podcast-art img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 20px 50px rgba(46, 73, 52, 0.25);
}

.podcast-body > p {
  font-size: 0.95rem;
  margin-bottom: 1.4em;
  color: var(--sumi-soft);
}

.podcast-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 36px;
}

.podcast-topics li {
  font-size: 0.82rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 18px;
  color: var(--sumi-soft);
  background: var(--kinari);
}

.podcast-links { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- Contact ---------- */
.contact { text-align: center; }

.contact-lead { color: var(--sumi-soft); margin-bottom: 52px; }

.cta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 900px;
  margin: 0 auto 60px;
  text-align: left;
}

.cta-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 22px 24px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.cta-card:hover {
  border-color: var(--matcha);
  box-shadow: 0 10px 28px rgba(43, 42, 38, 0.08);
  transform: translateY(-2px);
}

.cta-en {
  display: block;
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--tsubaki);
  margin-bottom: 8px;
}

.cta-card strong {
  font-weight: 400;
  font-size: 0.92rem;
  letter-spacing: 0.06em;
}

.cta-card small {
  display: block;
  font-size: 0.78rem;
  line-height: 1.9;
  letter-spacing: 0.06em;
  margin-top: 10px;
  color: var(--sumi-soft);
}

.cta-card.cta-featured {
  background: var(--matcha-deep);
  border-color: var(--matcha-deep);
  color: var(--kinari);
}

.cta-card.cta-featured .cta-en { color: var(--kincha); }
.cta-card.cta-featured small { color: rgba(250, 247, 240, 0.7); }

.cta-card.cta-featured:hover {
  background: var(--matcha);
  border-color: var(--matcha);
  box-shadow: 0 12px 32px rgba(46, 73, 52, 0.3);
}

.contact-guide {
  max-width: 640px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
  padding-top: 40px;
}

.contact-guide h3 {
  font-family: var(--font-mincho);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  margin-bottom: 22px;
}

.contact-guide ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.contact-guide li {
  font-size: 0.82rem;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 999px;
  padding: 7px 18px;
  color: var(--sumi-soft);
}

.contact-mail {
  margin-top: 40px;
  font-family: var(--font-en);
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  color: var(--sumi-soft);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--sumi);
  color: rgba(250, 247, 240, 0.85);
  padding: 70px 24px 40px;
  text-align: center;
}

.footer-name {
  font-family: var(--font-mincho);
  font-size: 1.05rem;
  letter-spacing: 0.2em;
  margin-bottom: 10px;
}

.footer-name span {
  display: block;
  font-family: var(--font-en);
  font-size: 0.78rem;
  letter-spacing: 0.26em;
  color: rgba(250, 247, 240, 0.5);
  margin-top: 8px;
}

.footer-copy-en {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 0.85rem;
  color: rgba(250, 247, 240, 0.45);
  margin: 22px 0 40px;
}

.footer-copyright {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: rgba(250, 247, 240, 0.4);
}

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1s cubic-bezier(0.22, 1, 0.36, 1), transform 1s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .pc { display: none; }
  .sp { display: inline; }

  body { line-height: 1.95; }

  .site-nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: 30px;
    background: rgba(250, 247, 240, 0.97);
    font-size: 1.1rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle {
    display: block;
    position: relative;
    z-index: 110;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
  }

  .nav-toggle span {
    position: absolute;
    left: 8px;
    width: 24px;
    height: 1.5px;
    background: var(--sumi);
    transition: transform 0.35s ease, top 0.35s ease;
  }

  .nav-toggle span:nth-child(1) { top: 16px; }
  .nav-toggle span:nth-child(2) { top: 24px; }

  .nav-toggle.is-open span:nth-child(1) { top: 20px; transform: rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { top: 20px; transform: rotate(-45deg); }

  .hero { padding-bottom: 170px; }
  .hero-inner { flex-direction: column; align-items: flex-start; }
  .hero-vertical { display: none; }
  .hero-photo { width: min(72vw, 300px); margin: 0 auto; }
  .hero-visual { align-self: center; }
  .hero-name { bottom: 56px; }

  .about-grid, .podcast-grid, .hotels-grid, .exec-grid { grid-template-columns: 1fr; }
  .about-side { position: static; }
  .about-photo { display: none; }

  .philosophy-list, .activity-grid { grid-template-columns: 1fr; }

  .cta-grid { grid-template-columns: 1fr; }

  .usecase-grid { grid-template-columns: 1fr; }

  .program-table > div { grid-template-columns: 1fr; gap: 4px; padding: 14px 4px; }

  .hotels-photo { order: -1; }
  .hotels-photo img { aspect-ratio: 16 / 10; }
}

@media (min-width: 901px) and (max-width: 1100px) {
  .cta-grid { grid-template-columns: repeat(2, 1fr); }
}