:root {
  --ink: #312d2a;
  --muted: #746c65;
  --accent: #a77d5d;
  --accent-deep: #805f47;
  --sand: #eadbcd;
  --cream: #faf7f3;
  --line: #e9e1da;
  --white: #ffffff;
  --shadow: 0 10px 30px rgba(76, 58, 45, 0.07);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, sans-serif;
  line-height: 1.7;
}

button, input { font: inherit; }
button { color: inherit; }

.site-header {
  min-height: 68px;
  padding: 0 clamp(22px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 20;
}

.brand {
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-decoration: none;
}

.site-navigation { display: flex; align-items: center; gap: clamp(14px, 2vw, 30px); }
.site-navigation > a, .nav-menu-label { color: var(--muted); font-size: .72rem; font-weight: 700; letter-spacing: .07em; text-decoration: none; }
.site-navigation > a:hover, .site-navigation > a:focus-visible, .nav-menu-label:hover, .nav-menu-label:focus-visible { color: var(--accent-deep); }
.site-navigation .current { color: var(--accent-deep); }
.nav-menu-group { position: relative; }
.nav-menu-label { padding: 22px 0; border: 0; background: transparent; cursor: pointer; }
.nav-submenu { position: absolute; top: calc(100% - 7px); left: 50%; min-width: 150px; padding: 8px; border: 1px solid var(--line); border-radius: 10px; background: #fff; box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translate(-50%, -5px); transition: .2s; }
.nav-submenu a { display: block; padding: 8px 10px; border-radius: 6px; color: var(--muted); font-size: .75rem; text-decoration: none; white-space: nowrap; }
.nav-submenu a:hover, .nav-submenu a:focus-visible { color: var(--accent-deep); background: var(--cream); }
.nav-menu-group:hover .nav-submenu, .nav-menu-group:focus-within .nav-submenu, .nav-menu-group.open .nav-submenu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; cursor: pointer; }
.menu-toggle-lines, .menu-toggle-lines::before, .menu-toggle-lines::after { display: block; width: 22px; height: 2px; background: var(--ink); transition: .2s; }
.menu-toggle-lines { position: relative; margin: auto; }
.menu-toggle-lines::before, .menu-toggle-lines::after { content: ""; position: absolute; left: 0; }
.menu-toggle-lines::before { top: -7px; }
.menu-toggle-lines::after { top: 7px; }
.menu-toggle[aria-expanded="true"] .menu-toggle-lines { background: transparent; }
.menu-toggle[aria-expanded="true"] .menu-toggle-lines::before { top: 0; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle-lines::after { top: 0; transform: rotate(-45deg); }

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(42px, 5.5vw, 70px) 24px 20px;
  text-align: center;
  background: radial-gradient(circle at 50% 16%, #fff 0, #fffaf6 38%, var(--cream) 74%);
}

.hero::before, .hero::after {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(167, 125, 93, .12);
  border-radius: 50%;
}
.hero::before { top: -160px; left: -110px; }
.hero::after { right: -150px; bottom: -170px; }

.eyebrow, .section-kicker {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .22em;
}

h1 {
  margin: 0;
  font-size: clamp(2.15rem, 5vw, 3.45rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .06em;
}

.mobile-break { display: none; }
.introduction { margin: 16px auto 24px; color: var(--muted); font-size: .94rem; }

.search-wrap {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
}

.search-wrap input {
  width: 100%;
  height: 60px;
  padding: 0 52px;
  border: 1px solid var(--line);
  border-radius: 14px;
  outline: none;
  background: var(--white);
  box-shadow: var(--shadow);
  color: var(--ink);
  transition: border-color .2s, box-shadow .2s;
}

.search-wrap input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(167,125,93,.13), var(--shadow); }
.search-wrap input::placeholder { color: #aaa19a; }

.search-icon {
  position: absolute;
  z-index: 1;
  top: 20px;
  left: 21px;
  width: 17px;
  height: 17px;
  border: 2px solid #8a817b;
  border-radius: 50%;
}
.search-icon::after { content: ""; position: absolute; width: 7px; height: 2px; right: -6px; bottom: -3px; background: #8a817b; transform: rotate(45deg); }

.filters { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; max-width: 840px; margin: 18px auto 0; }
.filter-button {
  min-width: 104px;
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  cursor: pointer;
  font-size: .84rem;
  transition: background .2s, border-color .2s, color .2s;
}
.filter-button:hover { border-color: var(--accent); }
.filter-button.active { border-color: var(--accent); background: var(--accent); color: var(--white); }
.filter-button:focus-visible, .card-link:focus-visible, .empty-state button:focus-visible { outline: 3px solid rgba(128,95,71,.3); outline-offset: 2px; }

.library { max-width: 1200px; margin: 0 auto; padding: 24px 28px 58px; }
.genre-section { padding-bottom: 34px; }
.latest-section { padding-top: 20px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.section-heading h2 { margin: 0; font-size: clamp(1.55rem, 3vw, 2rem); }
.result-count { margin: 0 0 4px; color: var(--muted); font-size: .84rem; }

.genre-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.genre-card { min-width: 0; min-height: 210px; padding: 25px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); box-shadow: var(--shadow); color: var(--ink); text-decoration: none; display: flex; flex-direction: column; transition: border-color .2s, transform .2s, box-shadow .2s; }
.genre-card:hover { border-color: var(--sand); transform: translateY(-2px); box-shadow: 0 14px 34px rgba(76,58,45,.1); }
.genre-card:focus-visible { outline: 3px solid rgba(128,95,71,.3); outline-offset: 3px; }
.genre-card h3 { margin: 0 0 10px; font-size: 1.1rem; }
.genre-description { margin: 0 0 24px; color: var(--muted); font-size: .83rem; }
.genre-card-footer { display: flex; align-items: end; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: .72rem; }
.genre-card-footer strong { color: var(--accent-deep); font-size: .76rem; white-space: nowrap; }

.content-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.content-card {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--white);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 17px; }
.category { color: var(--accent-deep); font-size: .76rem; font-weight: 700; letter-spacing: .04em; }
.date { padding: 3px 8px; border-radius: 5px; background: #f5ede5; color: var(--muted); font-size: .7rem; white-space: nowrap; }
.content-card h3 { margin: 0 0 10px; font-size: 1.12rem; font-weight: 700; line-height: 1.55; letter-spacing: .02em; }
.description { margin: 0 0 22px; color: var(--muted); font-size: .86rem; }
.card-actions { display: flex; gap: 9px; margin-top: auto; }
.card-link { flex: 1; padding: 9px 10px; border: 1px solid var(--sand); border-radius: 8px; background: var(--white); color: var(--accent-deep); text-align: center; text-decoration: none; font-size: .78rem; font-weight: 700; cursor: pointer; }
.card-link.primary { background: var(--sand); }
.card-link:hover { border-color: var(--accent); background: #f3e9e0; }

.modal-open { overflow: hidden; }
.audio-modal { position: fixed; z-index: 100; inset: 0; display: grid; place-items: center; padding: 20px; }
.audio-modal[hidden] { display: none; }
.audio-modal-backdrop { position: absolute; inset: 0; background: rgba(49,45,42,.42); }
.audio-modal-dialog { position: relative; width: min(100%, 440px); max-height: calc(100vh - 40px); overflow-y: auto; padding: 24px; border: 1px solid var(--line); border-radius: 16px; background: var(--white); box-shadow: 0 18px 50px rgba(49,45,42,.18); }
.audio-modal-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.audio-modal-header h2 { margin: 0; font-size: 1.2rem; }
.audio-modal-close { flex: 0 0 36px; width: 36px; height: 36px; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: var(--cream); color: var(--muted); cursor: pointer; font-size: 1.35rem; line-height: 1; }
.audio-modal-close:hover { border-color: var(--accent); color: var(--accent-deep); }
.audio-modal-links { display: grid; gap: 10px; }
.audio-modal-links .card-link { width: 100%; padding: 12px 14px; background: var(--cream); text-align: left; }
.audio-modal-close:focus-visible, .audio-modal-links .card-link:focus-visible { outline: 3px solid rgba(128,95,71,.3); outline-offset: 2px; }

.empty-state { padding: 58px 24px; border: 1px dashed #d6c9bd; border-radius: 16px; text-align: center; color: var(--muted); }
.empty-state button { padding: 9px 18px; border: 0; border-radius: 999px; background: var(--accent); color: #fff; cursor: pointer; }
.loading-state { max-width: 1144px; margin: 0 auto 56px; }

.category-hero { position: relative; overflow: hidden; padding: 44px 24px 34px; text-align: center; background: radial-gradient(circle at 50% 16%, #fff 0, #fffaf6 38%, var(--cream) 74%); }
.category-hero h1 { font-size: clamp(2rem, 4vw, 3rem); }
.category-hero .introduction { max-width: 720px; margin-bottom: 13px; }
.back-link { color: var(--accent-deep); font-size: .82rem; font-weight: 700; text-decoration: none; }
.back-link:hover { text-decoration: underline; }
.category-library { padding-top: 38px; }
.category-search { margin-bottom: 18px; }
.theme-filters { margin: 0 auto 34px; }
.category-heading { margin-top: 30px; }
.load-more-wrap { margin-top: 28px; text-align: center; }
.load-more { min-width: 170px; padding: 11px 24px; border: 1px solid var(--accent); border-radius: 999px; background: var(--white); color: var(--accent-deep); cursor: pointer; font-weight: 700; }
.load-more:hover { background: #f3e9e0; }

.profile { max-width: 1144px; margin: 0 auto 56px; padding: 30px 32px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.65); }
.profile h2 { margin: 0 0 24px; font-size: clamp(1.35rem, 2.5vw, 1.7rem); }
.profile-content { display: flex; align-items: flex-start; gap: 22px; }
.profile-placeholder { flex: 0 0 64px; height: 64px; border-radius: 50%; background: #f1e7de; color: var(--accent-deep); display: grid; place-items: center; font-size: 1.35rem; font-weight: 700; }
.profile-copy h3 { margin: 0 0 10px; font-size: 1rem; }
.profile-copy p { margin: 0 0 7px; color: var(--muted); font-size: .85rem; }
.profile-links:empty { display: none; }

.site-footer { padding: 20px; border-top: 1px solid var(--line); color: #958b84; background: #fff; text-align: center; font-size: .7rem; }
.site-footer p { margin: 2px 0; }
.site-footer a { color: var(--muted); }
.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; }

@media (max-width: 900px) {
  .content-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .genre-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .profile { margin-inline: 28px; }
  .menu-toggle { display: block; }
  .site-navigation { display: none; position: absolute; top: 100%; left: 0; right: 0; padding: 14px clamp(22px, 5vw, 72px) 20px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.98); box-shadow: var(--shadow); align-items: stretch; flex-direction: column; gap: 0; }
  .site-navigation.open { display: flex; }
  .site-navigation > a, .nav-menu-label { display: block; width: 100%; padding: 10px 0; text-align: left; }
  .nav-menu-label::after { content: "＋"; float: right; }
  .nav-menu-group.open .nav-menu-label::after { content: "−"; }
  .nav-submenu { position: static; display: none; min-width: 0; padding: 0 0 5px 14px; border: 0; box-shadow: none; opacity: 1; visibility: visible; transform: none; }
  .nav-menu-group:hover .nav-submenu { display: none; }
  .nav-menu-group.open .nav-submenu { display: block; transform: none; }
}

@media (max-width: 620px) {
  .site-header { height: 58px; padding-inline: 20px; }
  .brand { font-size: 1.2rem; }
  .hero { padding: 42px 18px 34px; }
  .introduction { font-size: .86rem; }
  .introduction br { display: none; }
  .search-wrap input { height: 56px; padding: 0 18px 0 46px; font-size: .83rem; }
  .search-icon { top: 18px; left: 18px; }
  .filters { justify-content: flex-start; flex-wrap: nowrap; overflow-x: auto; padding: 1px 2px 8px; scrollbar-width: none; }
  .filters::-webkit-scrollbar { display: none; }
  .filter-button { min-width: max-content; }
  .library { padding: 46px 18px 54px; }
  .genre-section { padding-top: 34px; padding-bottom: 28px; }
  .latest-section { padding-top: 24px; }
  .section-heading { align-items: end; }
  .content-grid { grid-template-columns: 1fr; gap: 14px; }
  .genre-grid { grid-template-columns: 1fr; gap: 14px; }
  .genre-card { min-height: 180px; padding: 22px; }
  .category-hero { padding: 38px 18px 30px; }
  .category-library { padding-top: 34px; }
  .category-heading { margin-top: 26px; }
  .content-card { padding: 21px; }
  .profile { margin: 0 18px 40px; padding: 24px 22px; }
  .profile-content { gap: 16px; }
  .profile-placeholder { flex-basis: 50px; height: 50px; }
}

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