/* ==========================================================================
   中堅・中小企業向けサステナビリティ経営実践セミナー 2026
   Mobile-first / JIS X 8341-3 AA 準拠を意識したスタイル
   ========================================================================== */

:root {
  /* 2026 original: Blue main + Yellow accent */
  --color-bg: #ffffff;
  --color-text: #142033;
  --color-text-muted: #526074;
  --color-primary: #0b4aa2;
  --color-primary-dark: #08357a;
  --color-primary-mid: #1a6fd4;
  --color-primary-light: #e8f1fb;
  --color-accent: #f0c000;
  --color-accent-dark: #d4a800;
  --color-accent-soft: #fff8d6;
  --grad-num: linear-gradient(90deg, #08357a 0%, #0b4aa2 45%, #1a6fd4 100%);
  --color-border: #d7e0ea;
  --color-link: #0b4aa2;
  --color-link-visited: #551a8b;
  --color-footer-dark: #062a52;
  --color-footer-mid: #0b4aa2;
  --color-footer-light: #f3f7fc;
  --color-surface: #f5f7fa;
  --sheet-soft: #eaf2fb;
  --sheet-deep: #d6e6f8;
  --sheet-radius: clamp(4rem, 12vw, 10rem);
  --card-radius: clamp(1.25rem, 3vw, 2.5rem);
  --font-base: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --font-en: "Josefin Sans", "Noto Sans JP", sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(8, 53, 122, 0.08);
  --shadow-md: 0 4px 20px rgba(8, 53, 122, 0.12);
  --shadow-lg: 0 12px 40px rgba(8, 53, 122, 0.15);
  --max-width: 72rem;
  --header-height: 64px;
  --utility-height: 40px;
  --chrome-height: 104px;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-link);
  text-decoration: underline;
}

a:visited {
  color: var(--color-link-visited);
}

a:hover,
a:focus {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 10000;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.skip-link:focus {
  top: var(--space-sm);
  color: #fff;
}

/* Utility */
.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;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-sm);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-md);
  }
}

.external {
  display: inline;
}

.external::after {
  content: "";
  display: inline-block;
  width: 0.82em;
  height: 0.82em;
  margin-left: 0.28em;
  vertical-align: -0.06em;
  background-color: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23000' d='M14 3h7v7h-2V6.41l-9.29 9.3-1.42-1.42 9.3-9.29H14V3zM5 5h6V3H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2v-6h-2v6H5V5z'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23000' d='M14 3h7v7h-2V6.41l-9.29 9.3-1.42-1.42 9.3-9.29H14V3zM5 5h6V3H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2v-6h-2v6H5V5z'/%3E%3C/svg%3E") center / contain no-repeat;
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-chrome {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.5);
  border-bottom: 1px solid rgba(11, 74, 162, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color 0.25s ease, border-color 0.25s ease, backdrop-filter 0.25s ease;
}

.site-chrome.is-scrolled {
  background: rgba(255, 255, 255, 0.5);
  border-bottom-color: rgba(11, 74, 162, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-header {
  background: transparent;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  min-height: var(--header-height);
  padding: 0.625rem 0;
}

.site-header__logo {
  flex-shrink: 0;
  line-height: 0;
  text-decoration: none;
}

.site-header__logo img {
  height: 36px;
  width: auto;
  max-width: min(180px, calc(100vw - 5.5rem));
  object-fit: contain;
  object-position: left center;
}

@media (min-width: 768px) {
  .site-header__logo img {
    height: 44px;
    max-width: 200px;
  }
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1002;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.menu-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: var(--transition);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
}

.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1100;
  background: rgba(20, 32, 51, 0.42);
}

.nav-backdrop.is-open {
  display: block;
}

.site-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 1101;
  width: 80%;
  max-width: 22.5rem;
  padding: 4.5rem var(--space-md) var(--space-lg);
  background: var(--color-bg);
  border-left: 1px solid var(--color-border);
  box-shadow: -8px 0 28px rgba(8, 53, 122, 0.12);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  transform: translate3d(100%, 0, 0);
  visibility: hidden;
  pointer-events: none;
  transition: transform 0.28s ease, visibility 0.28s ease;
}

.site-nav.is-open {
  transform: translate3d(0, 0, 0);
  visibility: visible;
  pointer-events: auto;
}

.nav-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-close__icon {
  position: relative;
  display: block;
  width: 18px;
  height: 18px;
}

.nav-close__icon::before,
.nav-close__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
}

.nav-close__icon::before {
  transform: translateY(-50%) rotate(45deg);
}

.nav-close__icon::after {
  transform: translateY(-50%) rotate(-45deg);
}

.nav-close:hover,
.nav-close:focus-visible {
  border-color: var(--color-primary);
}

.nav-close:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (max-width: 1023px) {
  .site-nav__item {
    border-bottom: 1px solid var(--color-border);
  }

  .site-nav__link {
    display: block;
    padding: var(--space-sm) 0;
    font-family: var(--font-base);
    font-size: 0.9375rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: none;
    color: var(--color-text);
    text-decoration: none;
  }

  .site-nav__link--cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 0.75rem;
    padding: 0.7rem 1.35rem;
    background: var(--color-primary);
    color: #fff !important;
    border: 2px solid var(--color-primary);
    border-radius: 999px;
    box-shadow: none;
  }
}

@media (min-width: 1024px) {
  .nav-backdrop {
    display: none !important;
  }

  .nav-close {
    display: none;
  }

  .site-nav {
    position: static;
    top: auto;
    right: auto;
    bottom: auto;
    width: auto;
    max-width: none;
    height: auto;
    padding: 0;
    overflow: visible;
    border: none;
    box-shadow: none;
    background: transparent;
    transform: none;
    visibility: visible;
    pointer-events: auto;
    transition: none;
  }

  .site-nav__list {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0 1.35rem;
  }

  .site-nav__link {
    display: inline-block;
    padding: 0.35rem 0;
    font-family: var(--font-base);
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: none;
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition), opacity var(--transition);
  }

  .site-nav__link:hover,
  .site-nav__link:focus,
  .site-nav__link.is-active {
    color: var(--color-primary);
  }

  .site-nav__link--cta {
    padding: 0.55rem 1.2rem;
    background: var(--color-primary);
    color: #fff !important;
    border: 2px solid #fff;
    border-radius: 999px;
    box-shadow: none;
  }

  .site-nav__link--cta:hover,
  .site-nav__link--cta:focus,
  .site-nav__link--cta.is-active {
    background: var(--color-primary-dark);
    color: #fff !important;
  }
}

@media (min-width: 1024px) and (max-width: 1199px) {
  .site-nav__list {
    gap: 0 0.85rem;
  }

  .site-nav__link {
    font-size: 0.72rem;
    letter-spacing: 0.08em;
  }

  .site-nav__link--cta {
    padding: 0.45rem 0.9rem;
  }
}

/* ==========================================================================
   Breadcrumb
   ========================================================================== */

.breadcrumb {
  padding: var(--space-xs) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.75rem;
}

@media (min-width: 768px) {
  .breadcrumb {
    font-size: 0.875rem;
  }
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.25rem;
}

.breadcrumb__item:not(:last-child)::after {
  content: ">";
  margin-left: 0.25rem;
  color: var(--color-text-muted);
}

.breadcrumb__link {
  color: var(--color-link);
}

.breadcrumb__current {
  color: var(--color-text-muted);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  background: var(--color-surface);
}

.hero__visual {
  display: block;
  width: 100%;
  line-height: 0;
  background: transparent;
}

.hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
  object-fit: contain;
  object-position: center;
  image-rendering: auto;
}

.hero__actions-bar {
  background: var(--color-surface);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.hero__actions {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: stretch;
  gap: 0.65rem;
}

.hero__actions .btn {
  flex: 1 1 0;
  width: auto;
  min-width: 0;
  padding-inline: 0.85rem;
  font-size: 0.875rem;
  white-space: nowrap;
}

@media (min-width: 480px) {
  .hero__actions {
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm);
  }

  .hero__actions .btn {
    flex: 0 1 auto;
    min-width: 12rem;
    padding-inline: 1.75rem;
    font-size: 1rem;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 1.75rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn:hover,
.btn:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff !important;
  border: 2px solid #fff;
  border-radius: 1.75rem;
  box-shadow: none;
}

.btn--primary:hover,
.btn--primary:focus {
  background: var(--color-primary-dark);
  filter: none;
  border-color: #fff;
  box-shadow: none;
}

.btn--secondary {
  background: #fff;
  color: var(--color-primary) !important;
  border: 2px solid var(--color-primary);
  border-radius: 1.75rem;
}

.btn--secondary:hover,
.btn--secondary:focus {
  background: var(--color-accent-soft);
  border-color: var(--color-primary);
}

.btn--outline {
  background: transparent;
  color: #fff !important;
  border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn--outline:hover,
.btn--outline:focus {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

/* ==========================================================================
   Section common
   ========================================================================== */

.section {
  padding: 2.5rem 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-xl) 0;
  }
}

.section--alt {
  background: var(--color-footer-light);
}

/* ==========================================================================
   ACK-inspired sheets — soft blue layers only (no yellow fills)
   Variety: plain white / soft tinted panel / nested deep inset
   ========================================================================== */

.section--plain {
  background: #fff;
}

.section--sheet {
  padding-block: clamp(3.5rem, 8vw, 7.5rem);
  position: relative;
}

.section--sheet-soft {
  background-color: var(--sheet-soft);
}

/* top-left — Support */
.section--sheet-tl {
  border-radius: var(--sheet-radius) 0 0 0;
}

/* soft shell covering Register → Past: full-bleed, flush edges */
.section--sheet-br {
  margin-top: calc(var(--sheet-radius) * -0.45);
  margin-left: 0;
  margin-right: 0;
  padding-block: 0;
  padding-inline: 0;
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
  border-radius: var(--sheet-radius) 0 0 var(--sheet-radius);
  overflow: hidden;
  z-index: 1;
}

/* nested deeper band — Register only (inset from soft shell) */
.sheet-inset {
  background-color: var(--sheet-deep);
  border-radius: var(--sheet-radius) 0 0 var(--sheet-radius);
  padding-block: clamp(3.5rem, 8vw, 7.5rem);
  padding-inline: 0;
  margin-top: calc(var(--sheet-radius) * 0.35);
  margin-left: clamp(1.25rem, 4.5vw, 3.75rem);
  margin-right: 0;
  margin-bottom: 0;
  max-width: 100%;
}

.sheet-card {
  background: #fff;
  border-radius: var(--card-radius);
  padding: clamp(1.25rem, 3vw, 2.5rem);
  box-shadow: 0 8px 28px rgba(8, 53, 122, 0.06);
}

.sheet-card--on-white {
  border: 1px solid var(--color-border);
  box-shadow: 0 6px 20px rgba(8, 53, 122, 0.04);
}

/* Register = Mail News layout */
.register-ack {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 961px) {
  .register-ack {
    grid-template-columns: minmax(12rem, 38%) minmax(0, 1fr);
    gap: 3rem;
  }
}

.register-ack__side .program-ack__title {
  margin-bottom: 1rem;
}

.register-ack__card {
  text-align: left;
}

.register-ack__lead {
  margin: 0 0 1rem;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.register-ack__action {
  margin: 1.5rem 0 0;
}

/* Past + Organizer — ACK Social/Search style split */
.aftercare-split {
  display: grid;
  gap: 2.75rem;
  padding-top: clamp(3rem, 7vw, 5rem);
  padding-bottom: clamp(1rem, 3vw, 2rem);
}

.aftercare-split__col {
  scroll-margin-top: calc(var(--chrome-height) + 1rem);
}

@media (min-width: 800px) {
  .aftercare-split {
    grid-template-columns: 1fr 1fr;
    gap: 0;
    align-items: start;
  }

  .aftercare-split__col {
    padding-inline: clamp(1.25rem, 3vw, 2.75rem);
  }

  .aftercare-split__col + .aftercare-split__col {
    border-left: 1px solid rgba(8, 53, 122, 0.18);
  }
}

.aftercare-split__title {
  margin-bottom: 1.5rem;
  font-size: clamp(1.85rem, 4vw, 2.5rem);
}

.aftercare-split .past-links {
  justify-content: flex-start;
}

.organizer__logo {
  display: block;
  width: min(210px, 70%);
  height: auto;
  margin: 0 0 1rem;
}

.organizer__note {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.85;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

@media (max-width: 639px) {
  .section--sheet-br {
    margin-top: -2rem;
    margin-left: 0;
  }

  .sheet-inset {
    margin-top: 1.5rem;
    margin-left: 0.85rem;
    border-radius: calc(var(--sheet-radius) * 0.65) 0 0 calc(var(--sheet-radius) * 0.65);
    padding-block: 3rem;
  }
}

/* ==========================================================================
   News
   ========================================================================== */

.section--news {
  padding: var(--space-md) 0 var(--space-lg);
  background: #fff;
  border-bottom: 1px solid var(--color-border);
}

.section-header--news {
  margin-bottom: var(--space-md);
  text-align: left;
}

.section-header--news .section-header__title {
  font-size: clamp(1.375rem, 3.5vw, 1.75rem);
}

.section-header--news .section-header__title::after {
  margin-left: 0;
  margin-right: auto;
}

.news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 3px solid var(--color-accent);
}

.news-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xs);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 640px) {
  .news-item {
    grid-template-columns: 9rem 1fr;
    gap: var(--space-md);
    align-items: start;
  }
}

.news-item__date {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

.news-item__body {
  min-width: 0;
}

.news-item__badge {
  display: inline-block;
  margin-bottom: 0.35rem;
  padding: 0.15rem 0.5rem;
  background: var(--color-accent);
  color: var(--color-text);
  font-size: 0.75rem;
  font-weight: 700;
}

.news-item__title {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-text);
}

.news-item__text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.news-item--loading,
.news-item--empty {
  padding: var(--space-md) 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.section-header {
  margin-bottom: var(--space-lg);
  text-align: center;
}

.section-header__label {
  display: block;
  margin: 0 0 0.75rem;
  font-family: var(--font-en);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-indent: 0.08em;
  line-height: 1;
  background: var(--grad-num);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.section-header__title {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.35;
  color: var(--color-text);
}

.section-header__title::after {
  content: "";
  display: block;
  width: 3rem;
  height: 3px;
  margin: 0.85rem auto 0;
  background: var(--color-accent);
}

.u-nowrap {
  white-space: nowrap;
}

#about .section-header__title {
  font-size: clamp(1.2rem, 4.8vw, 2.5rem);
  letter-spacing: 0.04em;
}

@media (min-width: 640px) {
  #about .section-header__title {
    letter-spacing: 0.06em;
  }
}

.section-header__desc {
  margin: 0 auto;
  max-width: 42em;
  color: var(--color-text-muted);
  font-size: 1rem;
}

.coming-soon {
  margin: 2.5rem auto 0;
  max-width: 40rem;
  text-align: center;
  font-family: var(--font-en);
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  animation: coming-soon-breathe 2.8s ease-in-out infinite;
}

.coming-soon__dots {
  display: inline-block;
  min-width: 1.2em;
  text-align: left;
}

.coming-soon__dots span {
  display: inline-block;
  opacity: 0.2;
  animation: coming-soon-dot 1.4s ease-in-out infinite;
}

.coming-soon__dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.coming-soon__dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes coming-soon-breathe {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 0.95;
  }
}

@keyframes coming-soon-dot {
  0%,
  100% {
    opacity: 0.2;
    transform: translateY(0);
  }
  40% {
    opacity: 1;
    transform: translateY(-0.08em);
  }
}

@media (prefers-reduced-motion: reduce) {
  .coming-soon,
  .coming-soon__dots span {
    animation: none;
  }

  .coming-soon {
    opacity: 0.72;
  }

  .coming-soon__dots span {
    opacity: 1;
  }
}

.coming-soon--program {
  margin-top: 2rem;
  grid-column: 1 / -1;
}

/* ==========================================================================
   About
   ========================================================================== */

.about__content {
  max-width: 47.5rem;
  margin-inline: auto;
  text-align: left;
}

.about__content p {
  margin: 0 0 1.25rem;
  font-size: 1rem;
  line-height: 1.9;
  letter-spacing: 0.02em;
}

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

.about__content strong {
  letter-spacing: inherit;
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: rgba(240, 192, 0, 0.3);
  text-decoration-thickness: 0.28em;
  text-underline-offset: -0.06em;
  text-decoration-skip-ink: none;
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  transition:
    opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--reveal-delay, 0s);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--fade {
  transform: none;
}

.reveal--left {
  transform: translateX(-1.25rem);
}

.reveal--left.is-visible {
  transform: translateX(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================================================
   Speakers (TSFW 2025 face-photo style)
   ========================================================================== */

.speaker-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.75rem 1.15rem;
  margin: 2.75rem 0 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .speaker-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2.25rem 1.75rem;
  }
}

@media (min-width: 960px) {
  .speaker-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 2rem 1.75rem;
  }
}

@media (min-width: 1200px) {
  .speaker-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.speaker-list__item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  row-gap: 0.85rem;
  width: 100%;
  max-width: 13rem;
  height: 100%;
  margin-inline: auto;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.speaker-list__item:hover,
.speaker-list__item:focus-within {
  z-index: 2;
  transform: scale(1.08);
}

.speaker-list__photo {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  object-position: center 18%;
  padding: 0;
  box-sizing: border-box;
  border-radius: 0.4rem;
  background: #edf3fa;
  box-shadow: none;
  transition: box-shadow 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

img.speaker-list__photo[src*="tokue-saki"] {
  object-position: center 42%;
}

img.speaker-list__photo[src*="placeholder"] {
  object-fit: contain;
  object-position: center;
  padding: 18%;
}

.speaker-list__item:hover .speaker-list__photo,
.speaker-list__item:focus-within .speaker-list__photo {
  box-shadow: 0 6px 16px rgba(8, 53, 122, 0.12);
}

@media (prefers-reduced-motion: reduce) {
  .speaker-list__item,
  .speaker-list__photo {
    transition: none;
  }

  .speaker-list__item:hover,
  .speaker-list__item:focus-within {
    transform: none;
  }
}

.speaker-list__info {
  display: flex;
  flex-direction: column;
  flex: 1;
  width: 100%;
  row-gap: 0.35rem;
}

.speaker-list__name {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.5;
  letter-spacing: 0.04em;
  font-weight: 700;
  color: var(--color-text);
}

@media (min-width: 640px) {
  .speaker-list__name {
    font-size: 1.125rem;
    letter-spacing: 0.05em;
  }
}

.speaker-list__post {
  margin: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  row-gap: 0.15rem;
  font-size: 0.75rem;
  line-height: 1.45;
  letter-spacing: 0.01em;
  font-weight: 500;
  color: #3d5470;
}

.speaker-list__org,
.speaker-list__role {
  display: block;
}

.speaker-list__nowrap {
  white-space: nowrap;
}

.speaker-list__bio {
  margin: 0.45rem 0 0;
  color: #5a6f86;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.02em;
}

@media (min-width: 640px) {
  .speaker-list__post {
    font-size: 0.8rem;
    line-height: 1.5;
  }

  .speaker-list__bio {
    font-size: 0.8125rem;
  }
}

/* ==========================================================================
   Program (ACK Support-style: side title + cards)
   ========================================================================== */

.program-ack {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 961px) {
  .program-ack {
    grid-template-columns: minmax(18rem, 24rem) minmax(0, 1fr);
    gap: 2.5rem 2.75rem;
    align-items: start;
  }

  .program-ack__side {
    position: sticky;
    top: calc(var(--chrome-height) + 1rem);
  }

  .program-ack__list,
  .program-disclaimer,
  .coming-soon--program {
    grid-column: 2;
  }
}

.program-ack__badge {
  display: inline-flex;
  align-items: center;
  margin: 0 0 0.75rem;
  padding: 0.25rem 0.85rem;
  border: 1px solid var(--color-text);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.4;
}

.program-ack__title {
  margin: 0 0 1.25rem;
  font-family: var(--font-en);
  font-size: clamp(2.25rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.program-ack__title::after {
  display: none;
}

.program-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.15rem;
  margin: 0 0 1.75rem;
  color: var(--color-primary);
}

.program-meta__col {
  display: grid;
  gap: 0.2rem;
  min-width: 0;
}

.program-meta__date {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.45rem;
  margin: 0 0 0.35rem;
  font-family: var(--font-en);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

.program-meta__year {
  font-size: clamp(1rem, 2.8vw, 1.2rem);
}

.program-meta__md {
  font-size: clamp(1.85rem, 5vw, 2.35rem);
}

.program-meta__dow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.55rem;
  height: 1.55rem;
  padding: 0 0.25rem;
  margin-left: 0.1rem;
  border-radius: 0.2rem;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-base);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1;
  transform: translateY(-0.15em);
}

.program-meta__venue {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0 0 0.35rem;
  font-size: clamp(1.25rem, 3.5vw, 1.65rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.program-meta__venue > span {
  white-space: nowrap;
}

.program-meta__pin {
  flex-shrink: 0;
  width: 1.15em;
  height: 1.15em;
}

.program-meta__line {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

.program-meta__line--nowrap {
  white-space: nowrap;
}

@media (min-width: 768px) {
  .program-meta__line {
    font-size: 0.875rem;
  }
}

/* Program TOC (TSFW index style) */
.program-toc {
  margin: 0;
}

.program-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.program-toc__link {
  position: relative;
  display: grid;
  grid-template-columns: 3.5rem 1fr auto;
  align-items: center;
  gap: 0.65rem 0.75rem;
  min-height: 4.75rem;
  padding: 0.9rem 0;
  border-bottom: 2px solid #d7dee8;
  color: inherit;
  text-decoration: none;
}

.program-toc__link::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  z-index: 1;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.program-toc__link::after {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-top: 2px solid var(--color-primary);
  border-right: 2px solid var(--color-primary);
  transform: rotate(45deg);
  transition: transform 0.25s ease;
}

.program-toc__link:hover,
.program-toc__link:focus {
  text-decoration: none;
}

.program-toc__link:hover::before,
.program-toc__link:focus-visible::before {
  width: 100%;
}

.program-toc__link:hover::after,
.program-toc__link:focus-visible::after {
  transform: translateX(3px) rotate(45deg);
}

@media (prefers-reduced-motion: reduce) {
  .program-toc__link::before {
    transition: none;
  }

  .program-toc__link:hover::before,
  .program-toc__link:focus-visible::before {
    width: 100%;
  }
}

.program-toc__num {
  font-family: var(--font-en);
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.06em;
  background: var(--grad-num);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.program-toc__main {
  display: grid;
  gap: 0.4rem;
  min-width: 0;
}

.program-toc__time {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.65rem;
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.program-toc__sub {
  font-weight: 400;
  color: var(--color-primary);
}

.program-toc__name {
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0.03em;
  color: var(--color-text);
}

@media (max-width: 960px) {
  .program-toc {
    margin-top: 0.5rem;
  }
}

.program-ack__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.program-ack__item {
  position: relative;
  display: grid;
  gap: 0;
  background: #fff;
  border-radius: 1.5rem;
  padding: clamp(1.4rem, 3vw, 2.35rem);
  box-shadow: 0 10px 32px rgba(8, 53, 122, 0.07);
  border: 1px solid rgba(11, 74, 162, 0.06);
  overflow: hidden;
  scroll-margin-top: calc(var(--chrome-height) + 0.75rem);
}

.program-ack__item--break {
  background: rgba(255, 255, 255, 0.55);
  box-shadow: none;
  border-style: dashed;
  padding-block: 1.15rem;
}

.program-ack__body {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.program-ack__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem 1rem;
  margin-bottom: 0.75rem;
}

.program-ack__num {
  display: inline-block;
  margin: 0;
  padding: 0;
  background: none;
  border-radius: 0;
  color: var(--color-primary);
  font-family: var(--font-en);
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  min-width: 0;
}

.program-ack__time {
  margin: 0;
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.45rem;
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-primary);
}

.program-ack__session {
  margin: 0 0 0.45rem;
  color: var(--color-primary);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.program-ack__item-title {
  display: block;
  margin: 0 0 1.15rem;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.program-ack__item-title > span {
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  background: linear-gradient(transparent 72%, rgba(240, 192, 0, 0.35) 72%);
  padding: 0 0.1em;
}

.program-ack__item-title--plain > span,
.program-ack__item--break .program-ack__item-title > span {
  background: none;
  padding: 0;
}

.program-ack__item--break .program-ack__item-title {
  margin-bottom: 0;
}

.program-ack__text {
  margin: 0;
  font-size: 0.975rem;
  line-height: 1.85;
  letter-spacing: 0.02em;
  font-weight: 500;
  color: #3d5470;
}

.program-speaker {
  display: grid;
  grid-template-columns: 4.25rem minmax(0, 1fr);
  gap: 0.85rem 1rem;
  align-items: center;
  margin-top: 0.25rem;
  padding: 0.85rem;
  background: #fff;
  border: 1px solid rgba(11, 74, 162, 0.1);
  border-radius: 0.5rem;
}

#session-02 .program-speaker {
  margin-top: 0.5rem;
  padding: 1rem;
  grid-template-columns: 7rem minmax(0, 1fr);
  gap: 1.1rem 1.25rem;
  align-items: center;
  background: #fff;
  box-shadow: none;
}

#session-02 .program-speaker__name {
  font-size: 1.2rem;
}

#session-02 .program-speaker__org,
#session-02 .program-speaker__role {
  font-size: 0.8125rem;
  line-height: 1.5;
}

#session-02 .program-speaker__org {
  white-space: normal;
  overflow-wrap: anywhere;
}

.program-speaker__photo {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  object-position: center 18%;
  padding: 0;
  box-sizing: border-box;
  background: #edf3fa;
  border-radius: 0.35rem;
  box-shadow: none;
}

img.program-speaker__photo[src*="tokue-saki"] {
  object-position: center 42%;
}

img.program-speaker__photo[src*="placeholder"] {
  object-fit: contain;
  object-position: center;
  padding: 16%;
}

.program-speaker__info {
  min-width: 0;
  display: grid;
  gap: 0.2rem;
}

.program-speaker__tag {
  margin: 0 0 0.2rem;
  width: fit-content;
  padding: 0.08rem 0.45rem 0.08rem 0.4rem;
  border-radius: 0;
  border-left: 3px solid var(--color-primary);
  background: transparent;
  color: var(--color-primary);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.program-speaker__name {
  margin: 0;
  color: var(--color-text);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0.04em;
}

.program-speaker__org,
.program-speaker__role {
  margin: 0;
  color: #3d5470;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.02em;
}

.program-speaker__role {
  font-weight: 700;
  color: #25486b;
}

.program-speaker__bio {
  margin: 0.35rem 0 0;
  color: #5a6f86;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.6;
}

.program-speaker-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin: 0.15rem 0 1.15rem;
}

.program-speaker--compact {
  grid-template-columns: 4.25rem minmax(0, 1fr);
  gap: 0.85rem;
  padding: 0.85rem;
}

.program-speaker--compact .program-speaker__name {
  font-size: 1rem;
}

.program-speaker--compact .program-speaker__org,
.program-speaker--compact .program-speaker__role {
  font-size: 0.8125rem;
}

.program-speaker--moderator {
  border-color: rgba(11, 74, 162, 0.18);
  background: #f7fafc;
}

.program-speaker-grid--org {
  grid-template-columns: 1fr;
}

.program-speaker--compact .program-speaker__org,
.program-speaker--compact .program-speaker__role {
  font-size: 0.75rem;
  line-height: 1.45;
  letter-spacing: 0.01em;
}

.program-topics {
  display: grid;
  gap: 0.55rem;
  padding-top: 0.15rem;
}

.program-topics__label {
  margin: 0;
  width: fit-content;
  padding: 0.1rem 0.5rem;
  border-left: 3px solid var(--color-primary);
  background: rgba(11, 74, 162, 0.07);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.program-topics__list {
  margin: 0;
  padding-left: 1.25rem;
  color: #3d5470;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.8;
}

.program-topics__list li + li {
  margin-top: 0.15rem;
}

@media (min-width: 640px) {
  .program-speaker-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .program-speaker-grid--org {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .program-speaker--moderator {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  #session-02 .program-speaker {
    grid-template-columns: 8rem minmax(0, 1fr);
    gap: 1.25rem 1.4rem;
    padding: 1.15rem 1.25rem;
  }

  #session-02 .program-speaker__name {
    font-size: 1.25rem;
  }

  #session-02 .program-speaker__org,
  #session-02 .program-speaker__role {
    font-size: 0.875rem;
  }
}

.program-ack .program-disclaimer {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

@media (max-width: 960px) {
  .program-ack__side {
    text-align: left;
  }
}

/* ==========================================================================
   Overview table
   ========================================================================== */

.overview-table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.sheet-card.overview-table-wrapper,
.sheet-card.overview-map {
  overflow: hidden;
}

.overview-table-wrapper.sheet-card {
  padding: 0;
}

.overview-table-wrapper.sheet-card .overview-table {
  margin: 0;
}

.overview-table-wrapper.sheet-card .overview-table th,
.overview-table-wrapper.sheet-card .overview-table td {
  border-left: none;
  border-right: none;
}

.overview-table-wrapper.sheet-card .overview-table tr:first-child th,
.overview-table-wrapper.sheet-card .overview-table tr:first-child td {
  border-top: none;
}

.overview-table-wrapper.sheet-card .overview-table tr:last-child th,
.overview-table-wrapper.sheet-card .overview-table tr:last-child td {
  border-bottom: none;
}

.overview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.overview-table th,
.overview-table td {
  padding: var(--space-sm);
  border: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.overview-table th {
  width: 28%;
  min-width: 6.5em;
  background: var(--color-primary-light);
  font-weight: 700;
  text-align: center;
  vertical-align: middle;
}

@media (max-width: 639px) {
  .overview-table th,
  .overview-table td {
    padding: 0.75rem 0.65rem;
    font-size: 0.875rem;
  }

  .overview-table th {
    width: 7em;
    min-width: 0;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    white-space: nowrap;
  }
}

@media (min-width: 640px) {
  .overview-table th {
    white-space: nowrap;
  }
}

.overview-table .phrase {
  display: inline-block;
}

.overview-table ul {
  margin: 0;
  padding-left: 1.25rem;
}

.overview-table li {
  margin-bottom: 0.25rem;
}

.overview-map {
  margin-top: var(--space-sm);
  overflow: hidden;
  line-height: 0;
}

.overview-map.sheet-card {
  padding: 0;
  border-radius: var(--card-radius);
}

.overview-map iframe {
  width: 100%;
  border: 0;
  display: block;
}

.overview-map iframe {
  width: 100%;
  height: 250px;
  border: 0;
}

@media (min-width: 640px) {
  .overview-map iframe {
    height: 350px;
  }
}

/* ==========================================================================
   Support / Organizer
   ========================================================================== */

.logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

@media (min-width: 640px) {
  .logo-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .logo-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.logo-grid__item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  min-height: 80px;
  transition: box-shadow var(--transition);
}

.logo-grid__item:hover {
  box-shadow: var(--shadow-sm);
}

.logo-grid__item img {
  max-height: 48px;
  width: auto;
  object-fit: contain;
}

.organizer {
  text-align: center;
}

.organizer__logo {
  max-width: 280px;
  margin: 0 auto var(--space-sm);
}

.organizer__text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.past-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.past-links__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 7.5rem;
  padding: 0.85rem 1.5rem;
  background: var(--grad-num);
  border: 2px solid #fff;
  border-radius: 999px;
  color: #fff !important;
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  box-shadow: none;
  transition: transform var(--transition), filter var(--transition);
}

.past-links__link:hover,
.past-links__link:focus {
  filter: brightness(1.05);
  transform: translateY(-1px);
  box-shadow: none;
  text-decoration: none;
}

/* ==========================================================================
   CTA band
   ========================================================================== */

.cta-band {
  padding: var(--space-lg) 0;
  background: var(--color-primary);
  color: #fff;
  text-align: center;
  border-top: 4px solid var(--color-accent);
}

.cta-band__title {
  margin: 0 0 var(--space-xs);
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.cta-band__desc {
  margin: 0 0 var(--space-md);
  opacity: 0.9;
  font-size: 0.9375rem;
}

.cta-band .btn--primary {
  background: var(--color-accent);
  color: var(--color-text) !important;
  border: 2px solid #fff;
  box-shadow: none;
}

.cta-band .btn--primary:hover,
.cta-band .btn--primary:focus {
  background: #ffd84a;
  border-color: #fff;
  box-shadow: none;
}

/* ==========================================================================
   Footer (ACK-inspired: rounded panel + curve-following marquee)
   ========================================================================== */

.site-footer {
  background: #fff;
  color: #fff;
  padding: clamp(4rem, 9vw, 6.5rem) 0 0;
  overflow: hidden;
}

.site-footer__shell {
  position: relative;
  z-index: 0;
}

.site-footer__curve-marquee {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(clamp(4rem, 9vw, 6.5rem) * -0.98);
  z-index: 3;
  height: calc(clamp(4rem, 9vw, 6.5rem) + var(--sheet-radius) * 0.55);
  pointer-events: none;
  user-select: none;
  overflow: visible;
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent 0,
    rgba(0, 0, 0, 0.35) 4%,
    #000 14%,
    #000 100%
  );
  mask-image: linear-gradient(
    90deg,
    transparent 0,
    rgba(0, 0, 0, 0.35) 4%,
    #000 14%,
    #000 100%
  );
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
}

.site-footer__curve-svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.site-footer__curve-text {
  fill: rgba(11, 74, 162, 0.38);
  font-family: var(--font-en);
  font-size: 72px;
  font-weight: 700;
  letter-spacing: 0.14em;
  dominant-baseline: alphabetic;
  alignment-baseline: baseline;
}

@media (min-width: 768px) {
  .site-footer__curve-text {
    font-size: 87px; /* original 58px × 3/2 */
  }
}

@media (max-width: 639px) {
  .site-footer__curve-text {
    font-size: 69px;
    letter-spacing: 0.1em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-footer__curve-text animate {
    display: none;
  }
}

.site-footer__panel {
  position: relative;
  z-index: 1;
  overflow: hidden;
  background: var(--color-primary);
  border-radius: 0 var(--sheet-radius) 0 0;
  padding-top: clamp(3rem, 7vw, 5rem);
  color: #fff;
}

.site-footer a {
  color: #fff;
}

.site-footer a:visited {
  color: #fff;
}

.site-footer__grid {
  display: grid;
  gap: 2.5rem;
  padding-bottom: 2rem;
}

@media (min-width: 900px) {
  .site-footer__grid {
    grid-template-columns: 0.95fr 1.2fr;
    gap: 3rem;
    align-items: start;
  }
}

.site-footer__nav-block {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 2rem;
}

.site-footer__nav-col {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.site-footer__nav-col a {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  opacity: 0.95;
}

.site-footer__nav-col a:hover,
.site-footer__nav-col a:focus {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.site-footer__brand {
  text-align: left;
}

.site-footer__logo {
  width: min(220px, 70%);
  height: auto;
  margin-bottom: 1rem;
  filter: none;
}

.site-footer__org {
  margin: 0 0 0.85rem;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.site-footer__address {
  margin: 0 0 1rem;
  font-size: 0.8125rem;
  line-height: 1.8;
  opacity: 0.95;
}

.site-footer__address p {
  margin: 0 0 0.65rem;
}

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.22);
  padding: 1rem 0 1.35rem;
  background: transparent;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.85);
  text-align: left;
}

.site-footer__bottom-inner {
  display: grid;
  gap: 0.35rem;
}

.site-footer__bottom p {
  margin: 0;
}

.site-footer__bottom a {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.back-to-top {
  position: fixed;
  right: var(--space-sm);
  bottom: var(--space-sm);
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 1023px) {
  .has-mobile-cta .back-to-top {
    bottom: 4.75rem;
  }
}

.back-to-top:hover,
.back-to-top:focus {
  transform: translateY(-3px);
  background: var(--color-primary-dark);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* ==========================================================================
   Sub pages
   ========================================================================== */

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

.page-content h1 {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
}

.page-content h2 {
  margin: var(--space-lg) 0 var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary-light);
}

.page-content p,
.page-content ul,
.page-content ol {
  margin: 0 0 var(--space-sm);
}

.page-content ul,
.page-content ol {
  padding-left: 1.5rem;
}

.page-meta {
  margin-bottom: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.search-form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  max-width: 32rem;
}

.search-form input {
  flex: 1;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.search-form button {
  padding: 0.75rem 1.25rem;
  background: var(--color-primary);
  color: #fff;
  font-family: inherit;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.search-form button:hover,
.search-form button:focus {
  background: var(--color-primary-dark);
}

.sitemap-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sitemap-list > li {
  margin-bottom: var(--space-sm);
}

.sitemap-list a {
  font-weight: 600;
}

.sitemap-list ul {
  margin-top: 0.5rem;
  padding-left: 1.5rem;
  list-style: disc;
}

.sitemap-list ul a {
  font-weight: 400;
}

.checklist-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 0 0 var(--space-lg);
}

.overview-table-wrapper .checklist-table {
  margin-bottom: 0;
}

.page-content .overview-table-wrapper {
  margin-bottom: var(--space-lg);
}

.checklist-table th,
.checklist-table td {
  border: 1px solid var(--color-border);
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.checklist-table th {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 700;
}

.checklist-table tbody th {
  background: var(--color-footer-light);
  font-weight: 600;
}

@media (max-width: 767px) {
  .checklist-table {
    font-size: 0.75rem;
  }

  .checklist-table th,
  .checklist-table td {
    padding: 0.5rem;
  }

  .checklist-table tbody th {
    white-space: normal;
    min-width: 7.5rem;
  }
}

@media (min-width: 768px) {
  .checklist-table tbody th {
    white-space: nowrap;
  }
}

.status-ok {
  font-weight: 700;
  color: var(--color-primary-dark);
}

.status-next {
  font-weight: 700;
  color: #9a3412;
}

.status-na {
  color: var(--color-text-muted);
}

/* Mobile sticky CTA */
.mobile-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 800;
  padding: var(--space-xs) var(--space-sm);
  background: rgba(255, 255, 255, 0.97);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(100%);
  transition: transform var(--transition);
}

.mobile-cta.is-visible {
  transform: translateY(0);
}

.mobile-cta .btn {
  width: 100%;
}

@media (min-width: 1024px) {
  .mobile-cta {
    display: none;
  }
}

@media (max-width: 1023px) {
  body.has-mobile-cta {
    padding-bottom: 72px;
  }
}