* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --ink: #2f342f;
  --muted: #6d6f61;
  --leaf: #506846;
  --leaf-dark: #35472f;
  --moss: #7b8b61;
  --cream: #fbfaf5;
  --sand: #eee5d5;
  --paper: #ffffff;
  --line: #e2dac9;
  --shadow: 0 18px 48px rgba(57, 66, 48, .12);
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.85;
  color: var(--ink);
  background:
    linear-gradient(180deg, #f8f7f0 0, #f3f4ec 48%, #eef2ec 100%);
}

a {
  color: var(--leaf-dark);
  text-underline-offset: .18em;
}

img {
  display: block;
}

.container {
  width: min(1120px, 92%);
  margin: auto;
}

.site-header {
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
}

.site-header .container {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .15rem 2rem;
  align-items: end;
  padding: .8rem 0 .95rem;
}

.site-header h1 {
  margin: 0;
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  line-height: 1.25;
  letter-spacing: 0;
}

.site-header h1 a {
  color: var(--leaf-dark);
  text-decoration: none;
}

.site-kicker {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
  font-size: .86rem;
  letter-spacing: .04em;
}

.site-nav {
  display: flex;
  gap: .45rem;
  flex-wrap: wrap;
  justify-content: flex-end;
  padding: 0;
}

.site-nav a {
  padding: .46rem .78rem;
  border: 1px solid transparent;
  border-radius: 999px;
  text-decoration: none;
  color: #41513a;
  background: #eef2e6;
  font-size: .9rem;
  line-height: 1.2;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background: #fff;
  border-color: #c9d2b8;
  transform: translateY(-1px);
}

main {
  padding: 2.3rem 0 3rem;
}

section,
.post {
  background: rgba(255, 255, 255, .9);
  margin: 1.45rem 0;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid rgba(226, 218, 201, .85);
  border-radius: 18px;
  box-shadow: 0 12px 34px rgba(74, 80, 63, .06);
}

h2,
h3,
p {
  margin-top: 0;
}

h2 {
  margin-bottom: .85rem;
  color: var(--leaf-dark);
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.35;
}

h3 {
  margin-bottom: .45rem;
  color: #374331;
  line-height: 1.45;
}

p:last-child {
  margin-bottom: 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, .95fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  overflow: hidden;
  padding: clamp(1.4rem, 4vw, 3rem);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .98), rgba(249, 245, 236, .96));
  box-shadow: var(--shadow);
}

.hero h2 {
  margin-bottom: .9rem;
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.18;
}

.hero p {
  font-size: 1.04rem;
}

.hero-lead {
  color: #4d5347;
  max-width: 38rem;
}

.hero-actions,
.section-actions {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 1.35rem;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin-top: 1.4rem;
}

.hero-points span,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: .32rem .75rem;
  border: 1px solid #d8dec8;
  border-radius: 999px;
  color: #4f5f43;
  background: #f5f7ee;
  font-size: .9rem;
  line-height: 1.35;
}

.hero-media {
  position: relative;
}

.hero img,
.wide-img,
.profile img,
.gallery img {
  max-width: 100%;
  height: auto;
  border-radius: 18px;
}

.hero img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  box-shadow: 0 18px 42px rgba(49, 57, 43, .16);
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: .7rem 1.05rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  line-height: 1.35;
}

.button {
  background: var(--leaf);
  color: #fff !important;
  box-shadow: 0 10px 24px rgba(80, 104, 70, .22);
}

.button:hover,
.button:focus-visible {
  background: var(--leaf-dark);
}

.button-secondary {
  border: 1px solid #cfd8c0;
  background: #fff;
  color: var(--leaf-dark);
}

.notice {
  border-left: 6px solid var(--moss);
}

.edit-note {
  color: #706b5f;
  background: #f6f1e8;
  padding: .65rem .8rem;
  border-radius: 8px;
}

.intro-grid,
.cards,
.access-grid,
.gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.lesson-preview {
  display: grid;
  grid-template-columns: minmax(260px, .9fr) minmax(0, 1fr);
  gap: clamp(1.2rem, 3vw, 2rem);
  align-items: center;
}

.wide-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.schedule-list,
.post-list {
  display: grid;
  gap: 1rem;
}

.schedule-item,
.post-card,
.access-card,
.card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.05rem;
  background: var(--paper);
}

.card,
.access-card,
.post-card,
.schedule-item {
  transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease;
}

.card:hover,
.access-card:hover,
.post-card:hover,
.schedule-item:hover {
  border-color: #cdd5bd;
  box-shadow: 0 12px 30px rgba(62, 71, 55, .1);
  transform: translateY(-2px);
}

.schedule-date,
.date {
  margin-bottom: .25rem;
  color: #827349;
  font-weight: 700;
}

.profile {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 1.5rem;
  align-items: center;
}

.profile img {
  width: 190px;
  aspect-ratio: 1;
  object-fit: cover;
}

.qa {
  border-bottom: 1px solid #ddd6c8;
  padding: 1rem 0;
}

.qa summary {
  color: #35472f;
  font-weight: 700;
  cursor: pointer;
}

.form-placeholder {
  border: 2px dashed #b7aa95;
  border-radius: 16px;
  padding: 1rem;
  background: #fffdf8;
}

.site-footer {
  padding: 2rem 0;
  text-align: center;
  color: #777;
}

@media (max-width: 860px) {
  .site-header .container {
    grid-template-columns: 1fr;
    gap: .55rem;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .hero,
  .lesson-preview,
  .intro-grid,
  .cards,
  .access-grid,
  .gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 1.25rem, 1120px);
  }

  main {
    padding-top: 1rem;
  }

  section,
  .post,
  .hero {
    border-radius: 14px;
  }

  .site-header {
    position: static;
  }

  .site-nav a {
    flex: 1 1 calc(33.333% - .45rem);
    text-align: center;
    padding-inline: .45rem;
  }

  .hero-actions,
  .section-actions {
    align-items: stretch;
  }

  .button,
  .button-secondary {
    width: 100%;
  }

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