:root {
  --bg-color: #faf8f5;
  --surface-color: #ffffff;
  --text-color: #2c3038;
  --accent-color: #4a5d82;
  --accent-color-soft: #5c6b89;
  --container-width: 1080px;
  --shadow-soft: 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 14px 32px rgba(0, 0, 0, 0.12);
  --radius-sm: 16px;
  --radius-md: 20px;
  --radius-lg: 24px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.25rem;
  --space-xl: 3rem;
  --font-base: 1rem;
  --font-md: 1.125rem;
  --font-lg: 1.625rem;
  --font-xl: 2rem;
}

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

body {
  margin: 0;
  font-family: "Zen Maru Gothic", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  font-size: var(--font-base);
  line-height: 1.75;
  color: var(--text-color);
  background-color: var(--bg-color);
}

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

.container {
  width: min(100% - 2rem, var(--container-width));
  margin-inline: auto;
}

.site-header {
  background: linear-gradient(180deg, var(--accent-color) 0%, var(--accent-color-soft) 100%);
  color: #fff;
  padding: var(--space-lg) 0;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.header-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-md);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  color: #fff;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.12);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.2);
}

.nav-link.is-current {
  background: rgba(255, 255, 255, 0.28);
  font-weight: 700;
}

.site-title {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.3;
}

.site-subtitle {
  margin: 0;
  opacity: 0.92;
  letter-spacing: 0.06em;
  font-size: 0.95rem;
}

.hero {
  padding: var(--space-xl) 0 var(--space-lg);
}

.hero h2 {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.4rem, 2.5vw, var(--font-xl));
  color: var(--accent-color);
  line-height: 1.45;
}

.hero p {
  margin: 0;
  max-width: 62ch;
}

.content-section {
  padding: var(--space-lg) 0;
}

.section-title {
  margin: 0 0 var(--space-md);
  font-size: var(--font-lg);
  color: var(--accent-color);
}

.magazine-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 280px);
  gap: clamp(1.25rem, 2vw, 1.75rem);
  align-items: start;
}

.main-column {
  display: grid;
  gap: var(--space-lg);
}

.main-content-block + .main-content-block {
  margin-top: 0.2rem;
}

.main-card-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sidebar-column {
  display: grid;
  gap: 1rem;
}

.sidebar-card {
  background: var(--surface-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  padding: 1rem;
}

.sidebar-title {
  margin: 0 0 0.75rem;
  color: var(--accent-color);
  font-size: 1.05rem;
}

.sidebar-search-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
}

.sidebar-search-form input {
  min-height: 44px;
  border: 1px solid #d4dbe8;
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  font: inherit;
}

.sidebar-search-form button {
  min-height: 44px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.9rem;
  font: inherit;
  font-weight: 700;
  color: #fff;
  background: var(--accent-color);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.sidebar-search-form button:hover,
.sidebar-search-form button:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(74, 93, 130, 0.22);
  background: var(--accent-color-soft);
}

.sidebar-tag-filters {
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 0;
}

.sidebar-tag-filters .tag-filter-button {
  width: 100%;
  text-align: left;
}

.feature-links {
  display: grid;
  gap: 0.7rem;
}

.feature-link {
  display: block;
  border-radius: var(--radius-sm);
  overflow: hidden;
  text-decoration: none;
  color: var(--text-color);
  background: #f1f4fa;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-link img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.feature-link span {
  display: block;
  padding: 0.55rem 0.7rem 0.7rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--accent-color);
}

.feature-link:hover,
.feature-link:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(74, 93, 130, 0.18);
}

.sns-links {
  display: grid;
  gap: 1rem;
}

.sns-link {
  min-height: 48px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.65rem;
  padding: 0.65rem 0.9rem;
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  background: var(--accent-color);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.sns-icon {
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sns-icon svg {
  width: 0.95rem;
  height: 0.95rem;
  fill: #fff;
}

.sns-link:hover,
.sns-link:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(74, 93, 130, 0.24);
  background-color: #5d7097;
}

.sns-link:focus-visible {
  outline: 2px solid rgba(74, 93, 130, 0.35);
  outline-offset: 2px;
}

.sns-text {
  line-height: 1.35;
}

.profile-sns-heading {
  margin: 0.1rem 0 0;
  color: var(--accent-color);
  font-size: 0.95rem;
  font-weight: 700;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.tag-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
  margin: 0 0 var(--space-md);
}

.tag-filter-button {
  min-height: 44px;
  padding: 0.55rem 1rem;
  border: 0;
  border-radius: var(--radius-sm);
  background-color: #e8ebf2;
  color: var(--accent-color);
  font-family: inherit;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.tag-filter-button:hover,
.tag-filter-button:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(74, 93, 130, 0.16);
}

.tag-filter-button.is-active {
  background-color: var(--accent-color);
  color: #fff;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(1.25rem, 2vw, 1.75rem);
}

.card {
  background: var(--surface-color);
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.card-body {
  padding: var(--space-md);
  display: grid;
  gap: var(--space-sm);
}

.card-title {
  margin: 0;
  font-size: var(--font-md);
  line-height: 1.6;
  color: var(--accent-color);
}

.card-description {
  margin: 0;
  color: #444b59;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.card-date {
  color: #5a6272;
  font-size: 0.9rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.card-tag {
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background-color: #ecf0f7;
  color: var(--accent-color);
  font-size: 0.8rem;
  font-weight: 700;
}

.card-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-sm);
  background-color: var(--accent-color);
  color: #fff;
  text-decoration: none;
  font-size: 0.95rem;
  box-shadow: 0 6px 16px rgba(74, 93, 130, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.card-link:hover,
.card-link:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(74, 93, 130, 0.26);
  background-color: var(--accent-color-soft);
}

.card-link:focus-visible {
  outline: 2px solid rgba(74, 93, 130, 0.4);
  outline-offset: 2px;
}

.site-footer {
  padding: var(--space-lg) 0;
  font-size: 0.9rem;
  text-align: center;
  color: #5a6272;
}

.contact-form {
  background: var(--surface-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  padding: clamp(1.25rem, 3vw, 2rem);
  display: grid;
  gap: 1rem;
}

.form-field {
  display: grid;
  gap: 0.45rem;
}

.form-field label {
  color: var(--accent-color);
  font-weight: 700;
}

.form-field input,
.form-field textarea {
  width: 100%;
  border: 1px solid #d4dbe8;
  border-radius: var(--radius-sm);
  padding: 0.8rem 0.95rem;
  font: inherit;
  color: var(--text-color);
  background-color: #fff;
}

.form-field input:focus-visible,
.form-field textarea:focus-visible {
  outline: 2px solid rgba(74, 93, 130, 0.35);
  outline-offset: 1px;
  border-color: transparent;
}

.form-submit-button {
  min-height: 48px;
  width: fit-content;
  padding: 0.7rem 1.4rem;
  border: none;
  border-radius: var(--radius-sm);
  background-color: var(--accent-color);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(74, 93, 130, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.form-submit-button:hover,
.form-submit-button:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(74, 93, 130, 0.26);
  background-color: var(--accent-color-soft);
}

.profile-card {
  background: var(--surface-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  padding: clamp(1.25rem, 3vw, 2rem);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(1rem, 2.5vw, 1.75rem);
  align-items: center;
}

.profile-avatar {
  width: clamp(120px, 18vw, 180px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 10px 26px rgba(74, 93, 130, 0.2);
}

.profile-content {
  display: grid;
  gap: 0.85rem;
}

.profile-name {
  margin: 0;
  color: var(--accent-color);
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
}

.profile-bio {
  margin: 0;
  color: #444b59;
}

.profile-sns {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.2rem;
}

@media (max-width: 768px) {
  .magazine-layout {
    grid-template-columns: 1fr;
  }

  .main-card-grid {
    grid-template-columns: 1fr;
  }

  .sidebar-column {
    order: 2;
  }

  .sidebar-tag-filters {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .sidebar-tag-filters .tag-filter-button {
    width: auto;
    flex: 1 1 calc(50% - 0.5rem);
  }

  .profile-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .profile-avatar {
    margin-inline: auto;
  }

  .profile-sns {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 1.5rem, var(--container-width));
  }

  .site-header {
    padding: 1.5rem 0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }

  .header-inner {
    align-items: flex-start;
  }

  .site-nav {
    width: 100%;
  }

  .nav-link {
    flex: 1 1 calc(50% - 0.5rem);
  }

  .hero {
    padding-top: var(--space-lg);
    padding-bottom: var(--space-md);
  }

  .content-section {
    padding: 1.5rem 0;
  }

  .card-grid {
    gap: 1.125rem;
  }

  .card-body {
    padding: 1.25rem;
    gap: 0.875rem;
  }

  .card-link {
    width: 100%;
  }

  .tag-filters {
    gap: 0.5rem;
  }

  .form-submit-button {
    width: 100%;
  }

  .profile-sns .sns-link {
    width: 100%;
  }
}