/* ==========================================================================
   base
   ========================================================================== */

:root {
  --ink: #171616;
  --ink-soft: #2c2a28;
  --bone: #f5f1e8;
  --bone-deep: #ece6d9;
  --jelly: #f26b3a;
  --jelly-dark: #d4531f;
  --lime: #c7d94a;
  --mist: #7e9aa6;
  --line: #d8d1c3;
  --line-dark: #3a3734;
  --radius: 6px;
  --shell: 1180px;
  --reading: 760px;
  --gap: 32px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body.site-body {
  margin: 0;
  padding: 0;
  background: var(--bone);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--mist);
}

p {
  margin: 0 0 1em;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.25;
  font-weight: 700;
}

h2 {
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
  font-weight: 700;
}

h3 {
  font-size: 1.125rem;
  font-weight: 700;
}

a {
  color: var(--ink);
  text-decoration: none;
}

a:hover {
  color: var(--jelly-dark);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--jelly);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 60;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--bone);
  border-radius: var(--radius);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
  color: var(--bone);
}

/* ==========================================================================
   layout — shell, header, main, footer
   ========================================================================== */

.site-header {
  background: var(--ink);
  color: var(--bone);
  border-bottom: 1px solid var(--line-dark);
}

.header-top {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--bone);
  white-space: nowrap;
}

.brand:hover {
  color: var(--lime);
}

.site-nav {
  margin-left: auto;
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 22px;
}

.site-nav a {
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--bone-deep);
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.site-nav a:hover {
  color: #fff;
  border-bottom-color: var(--jelly);
}

.site-nav a.is-current {
  color: var(--jelly);
  border-bottom-color: var(--jelly);
}

.header-note {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 32px 14px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.header-note strong {
  color: var(--lime);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--bone);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

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

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

/* zone picker */

.zone-picker {
  position: relative;
}

.zone-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  color: var(--bone-deep);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.zone-toggle:hover {
  border-color: var(--mist);
}

.zone-label {
  color: var(--mist);
  font-weight: 400;
}

.zone-current {
  color: var(--lime);
}

.zone-current::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
}

.zone-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: 40;
  min-width: 190px;
  padding: 8px;
  background: var(--ink-soft);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

.zone-menu[hidden] {
  display: none;
}

.zone-menu a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--bone-deep);
  border-radius: 4px;
}

.zone-menu a:hover,
.zone-menu a:focus-visible {
  background: rgba(242, 107, 58, 0.16);
  color: var(--jelly);
}

/* main shell */

.site-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 32px;
}

.inner-main {
  padding-bottom: 72px;
}

.home-main {
  padding-bottom: 72px;
}

/* breadcrumb */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.breadcrumb a {
  color: var(--mist);
}

.breadcrumb a:hover {
  color: var(--jelly-dark);
}

.breadcrumb-sep {
  color: var(--line);
}

.breadcrumb-current {
  color: var(--ink);
}

/* page header */

.page-header {
  padding: 18px 0 0;
  max-width: var(--reading);
}

.page-title {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  font-weight: 800;
  color: var(--ink);
  line-height: 1.12;
}

.page-title + .page-lead {
  margin-top: 16px;
}

.page-lead {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-title {
  margin-bottom: 6px;
}

/* section heads */

.section-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 56px;
  margin-bottom: 26px;
  border-top: 1px solid var(--line);
}

.section-intro,
.section-note,
.section-lead {
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 640px;
}

/* footer */

.site-footer {
  margin-top: 40px;
  background: var(--ink);
  color: var(--bone-deep);
}

.footer-cols {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 32px 40px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 36px;
}

.footer-col h2 {
  margin-bottom: 14px;
  font-size: 15px;
  font-weight: 700;
  color: var(--lime);
}

.footer-col p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--bone-deep);
}

.footer-col a {
  color: var(--bone-deep);
  border-bottom: 1px solid var(--line-dark);
}

.footer-col a:hover {
  color: var(--jelly);
  border-bottom-color: var(--jelly);
}

.footer-bottom {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 22px 32px 34px;
  border-top: 1px solid var(--line-dark);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  align-items: baseline;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.footer-brand {
  margin: 0;
  font-weight: 700;
  color: var(--bone);
}

.footer-note,
.footer-copy {
  margin: 0;
}

/* ==========================================================================
   components — buttons, links, figures, tables, lists
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background: var(--jelly);
  color: var(--ink);
}

.btn-primary:hover {
  background: var(--jelly-dark);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}

.btn-ghost:hover {
  background: var(--ink);
  color: var(--bone);
}

.text-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--jelly-dark);
  border-bottom: 1px solid var(--jelly);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.text-link:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.row-num,
.feature-no,
.channel-index,
.order-no,
.step-index,
.scope-index,
.precheck-index {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--jelly);
  font-variant-numeric: tabular-nums;
}

/* figures */

.hero-media,
.spot-media,
.batch-media,
.feature-lead-media,
.feature-hero,
.feature-secondary,
.editor-figure,
.guide-figure,
.updates-figure,
.media-figure {
  overflow: hidden;
  border-radius: var(--radius);
}

.hero-media img,
.spot-media img,
.batch-media img,
.feature-lead-media img,
.feature-hero img,
.feature-secondary img,
.editor-figure img,
.guide-figure img,
.updates-figure img,
.media-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--bone-deep);
}

/* tables */

.channel-table,
.program-table,
.check-table,
.updates-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.channel-table caption,
.program-table caption,
.check-table caption,
.updates-table caption {
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
  padding-bottom: 10px;
}

.program-table th,
.program-table td,
.check-table th,
.check-table td,
.updates-table th,
.updates-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.program-table thead th,
.check-table thead th,
.updates-table thead th {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mist);
  border-bottom: 2px solid var(--ink);
}

.updates-table tbody th {
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

/* faq */

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  position: relative;
  padding: 18px 40px 18px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--jelly);
}

.faq-item[open] summary::after {
  content: "\2212";
}

.faq-item p {
  padding: 0 40px 18px 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* related links strip */

.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding: 26px 0;
  margin-top: 48px;
  border-top: 1px solid var(--line);
}

.related-links-label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.related-links-item {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.related-links-item:hover {
  color: var(--jelly-dark);
  border-bottom-color: var(--jelly);
}

/* ==========================================================================
   pages — home
   ========================================================================== */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 48px;
  align-items: start;
  padding-top: 40px;
}

.hero-text {
  max-width: 560px;
}

.hero-eyebrow {
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--jelly-dark);
}

.hero-text h1 {
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.08;
  color: var(--ink);
  margin-bottom: 20px;
}

.hero-lead {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 460px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 26px 0 32px;
}

.hero-facts {
  margin: 0;
  border-top: 1px solid var(--line);
}

.fact-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.fact-row dt {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.fact-row dd {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.hero-media {
  position: relative;
}

.hero-media img {
  aspect-ratio: 4 / 3;
}

/* channel index rows */

.channel-rows {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink);
}

.channel-row article {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  gap: 24px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.row-body h3 {
  margin-bottom: 6px;
  font-size: 1.125rem;
}

.row-body p {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 620px;
}

.row-meta {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.row-link {
  align-self: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--jelly-dark);
  white-space: nowrap;
  border-bottom: 1px solid var(--jelly);
}

.row-link:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* feature spot */

.spot-card {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  background: var(--bone-deep);
  border-radius: var(--radius);
  padding: 28px;
}

.spot-media img {
  aspect-ratio: 3 / 2;
}

.spot-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--lime);
  border-radius: 4px;
}

.spot-body h3 {
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  margin-bottom: 12px;
}

.spot-body > p {
  font-size: 15px;
  color: var(--ink-soft);
}

.spot-points {
  margin: 18px 0;
  border-top: 1px solid var(--line);
}

.spot-points li {
  padding: 10px 0 10px 22px;
  position: relative;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.spot-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 20px;
  width: 8px;
  height: 8px;
  background: var(--jelly);
  border-radius: 2px;
}

.spot-note {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
  margin-bottom: 20px;
}

/* feature rows */

.feature-rows {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink);
}

.feature-row {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 32px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.feature-row-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.feature-row-head h3 {
  font-size: 1.125rem;
}

.feature-row-body p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.feature-row-body a {
  font-size: 14px;
  font-weight: 600;
  color: var(--jelly-dark);
  border-bottom: 1px solid var(--jelly);
}

.feature-row-body a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* update batch */

.batch-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 40px;
  align-items: start;
}

.batch-media img {
  aspect-ratio: 4 / 3;
}

.batch-list {
  border-top: 1px solid var(--ink);
}

.batch-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.batch-item h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.batch-item p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.batch-item a {
  font-size: 13px;
  font-weight: 600;
  color: var(--jelly-dark);
  border-bottom: 1px solid var(--jelly);
}

.batch-item a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* entry pair */

.entry-pair {
  padding-top: 56px;
  margin-top: 56px;
  border-top: 1px solid var(--line);
}

.entry-pair h2 {
  margin-bottom: 24px;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.entry-item {
  padding: 24px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
}

.entry-item h3 {
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.entry-item p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 18px;
}

.entry-item .btn-ghost {
  color: var(--ink);
}

.entry-item .btn-ghost:hover {
  background: var(--ink);
  color: var(--bone);
}

/* ==========================================================================
   pages — inner shared header block
   ========================================================================== */

.page-title {
  padding-top: 4px;
}

.page-title-main,
.page-title-text,
.page-head-main,
.page-intro-main,
.title-main {
  max-width: var(--reading);
}

.page-title .page-lead,
.page-intro .page-lead,
.page-head .page-lead {
  margin-top: 12px;
}

.page-meta,
.title-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 40px;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
}

.page-meta-item,
.page-meta > div,
.page-head .page-meta > div,
.page-intro .page-meta > div,
.title-meta > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 120px;
}

.page-meta dt,
.title-meta dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-meta dd,
.title-meta dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

/* ==========================================================================
   pages — channels
   ========================================================================== */

.zone-bar {
  margin-top: 40px;
  padding: 24px 26px;
  background: var(--bone-deep);
  border-left: 4px solid var(--jelly);
  border-radius: var(--radius);
}

.zone-bar h2 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.zone-bar p {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 760px;
}

.zone-bar-hint {
  margin-top: 10px;
  font-size: 14px;
  color: var(--mist);
}

.zone-bar-hint a {
  color: var(--jelly-dark);
  font-weight: 600;
  border-bottom: 1px solid var(--jelly);
}

.zone-bar-hint a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.channel-table-section {
  margin-top: 8px;
}

.channel-table {
  border-top: 1px solid var(--ink);
}

.channel-table-head,
.channel-table .channel-row {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.15fr) minmax(0, 0.9fr);
  gap: 28px;
}

.channel-table-head {
  padding: 12px 0;
  border-bottom: 2px solid var(--ink);
}

.channel-table-head span {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.channel-table .channel-row {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.channel-row .col-channel {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.channel-name {
  font-size: 1.0625rem;
}

.channel-purpose {
  font-size: 14px;
  color: var(--ink-soft);
}

.channel-row .col-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.channel-form {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.channel-scene {
  font-size: 14px;
  color: var(--mist);
}

.channel-row .col-entry {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

.channel-entry-note {
  font-size: 14px;
  color: var(--ink-soft);
}

.channel-row .text-link {
  font-size: 14px;
}

/* editor desk */

.editor-desk {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.editor-figure img {
  aspect-ratio: 4 / 3;
}

.editor-text h2 {
  margin-bottom: 12px;
}

.editor-text p {
  font-size: 15px;
  color: var(--ink-soft);
}

/* relation */

.relation-section {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.relation-section h2 {
  margin-bottom: 14px;
}

.relation-section p {
  max-width: var(--reading);
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.relation-section .text-link {
  font-size: 15px;
}

/* precheck */

.precheck-section {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.precheck-section h2 {
  margin-bottom: 16px;
}

.precheck-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 22px;
}

.precheck-item {
  display: flex;
  gap: 12px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.precheck-body p {
  font-size: 14px;
  color: var(--ink-soft);
}

.precheck-section .text-link {
  font-size: 15px;
}

/* ==========================================================================
   pages — features
   ========================================================================== */

.feature-lead {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  margin-top: 40px;
}

.feature-lead-media img {
  aspect-ratio: 3 / 2;
}

.eyebrow {
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--jelly-dark);
}

.feature-lead-text h2 {
  margin-bottom: 12px;
}

.feature-lead-text > p {
  font-size: 15px;
  color: var(--ink-soft);
}

.feature-points {
  margin: 16px 0;
  border-top: 1px solid var(--line);
}

.feature-points li {
  padding: 9px 0 9px 20px;
  position: relative;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.feature-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 18px;
  width: 7px;
  height: 7px;
  background: var(--lime);
  border-radius: 2px;
}

.feature-hint {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
  margin-bottom: 16px;
}

.feature-index {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.feature-index h2 {
  margin-bottom: 8px;
}

.feature-index .section-intro {
  margin-bottom: 20px;
}

/* reading order */

.reading-order {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.reading-order h2 {
  margin-bottom: 24px;
}

.order-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.order-step {
  padding: 22px 22px 24px;
  background: var(--bone-deep);
  border-radius: var(--radius);
}

.order-step .order-no {
  display: block;
  margin-bottom: 10px;
}

.order-step h3 {
  margin-bottom: 8px;
  font-size: 1.0625rem;
}

.order-step p {
  font-size: 14px;
  color: var(--ink-soft);
}

/* feature relation */

.feature-relation {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
  gap: 40px;
  align-items: start;
}

.feature-relation h2 {
  grid-column: 1 / -1;
  margin-bottom: 6px;
}

.relation-body p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.relation-aside {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.relation-aside h3 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.relation-aside p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

/* guide entry */

.guide-entry {
  margin-top: 56px;
  padding: 32px;
  background: var(--ink);
  color: var(--bone);
  border-radius: var(--radius);
}

.guide-entry h2 {
  color: var(--bone);
  margin-bottom: 10px;
}

.guide-entry p {
  max-width: 640px;
  font-size: 15px;
  color: var(--bone-deep);
  margin-bottom: 16px;
}

.guide-entry .text-link {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.guide-entry .text-link:hover {
  color: #fff;
  border-bottom-color: #fff;
}

/* ==========================================================================
   pages — feature-night
   ========================================================================== */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  align-items: start;
  margin-top: 8px;
}

.page-primary {
  min-width: 0;
}

.page-layout .page-title {
  max-width: none;
  padding-top: 0;
}

.title-lead {
  margin-top: 12px;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.title-meta {
  margin-top: 22px;
}

.feature-hero {
  margin-top: 28px;
}

.feature-hero img {
  aspect-ratio: 16 / 9;
}

.feature-intro {
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.feature-intro h2 {
  margin-bottom: 16px;
}

.intro-body h3 {
  margin: 22px 0 8px;
  font-size: 1.0625rem;
}

.intro-body h3:first-child {
  margin-top: 0;
}

.intro-body p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: var(--reading);
}

.feature-programs {
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.feature-programs h2 {
  margin-bottom: 8px;
}

.feature-programs .section-lead {
  margin-bottom: 18px;
}

.program-table tbody td:first-child {
  font-weight: 600;
  color: var(--ink);
}

.program-table tbody td {
  color: var(--ink-soft);
}

.feature-secondary {
  margin-top: 32px;
}

.feature-secondary img {
  aspect-ratio: 16 / 9;
}

.feature-watch {
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.feature-watch h2 {
  margin-bottom: 8px;
}

.feature-watch .section-lead {
  margin-bottom: 20px;
}

.watch-steps {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink);
}

.watch-steps li {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.watch-steps h3 {
  margin-bottom: 6px;
  font-size: 1rem;
}

.watch-steps p {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: var(--reading);
}

.scope-note {
  margin-top: 20px;
  padding: 16px 18px;
  background: var(--bone-deep);
  border-left: 3px solid var(--mist);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--ink-soft);
}

.scope-note a {
  color: var(--jelly-dark);
  font-weight: 600;
  border-bottom: 1px solid var(--jelly);
}

.scope-note a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* aside */

.page-aside {
  position: sticky;
  top: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 8px;
}

.aside-block {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.aside-block h2 {
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--jelly-dark);
}

.aside-meta {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.aside-meta > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.aside-meta dt {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.aside-meta dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.aside-links a {
  display: block;
  padding: 8px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.aside-links a:hover {
  color: var(--jelly-dark);
  border-bottom-color: var(--jelly);
}

.aside-block p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.aside-block .text-link {
  font-size: 14px;
}

/* ==========================================================================
   pages — guide
   ========================================================================== */

.guide-steps {
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.guide-steps h2 {
  margin-bottom: 8px;
}

.guide-steps .section-intro {
  margin-bottom: 22px;
}

.step-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink);
}

.step-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.step-body h3 {
  margin-bottom: 6px;
  font-size: 1.0625rem;
}

.step-body p {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: var(--reading);
}

.step-check {
  margin-top: 8px;
  font-size: 14px;
  color: var(--jelly-dark);
}

.guide-figure {
  margin-top: 40px;
}

.guide-figure img {
  aspect-ratio: 16 / 9;
}

.entry-check {
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.entry-check h2 {
  margin-bottom: 8px;
}

.entry-check .section-intro {
  margin-bottom: 20px;
}

.check-table tbody td {
  color: var(--ink-soft);
}

.check-table tbody td:first-child {
  font-weight: 600;
  color: var(--ink);
}

.guide-faq {
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.guide-faq h2 {
  margin-bottom: 14px;
}

.scope-privacy {
  margin-top: 44px;
  padding: 26px;
  background: var(--bone-deep);
  border-radius: var(--radius);
}

.scope-privacy h2 {
  margin-bottom: 12px;
  font-size: 1.15rem;
}

.scope-body p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 12px;
  max-width: var(--reading);
}

.scope-body a {
  color: var(--jelly-dark);
  font-weight: 600;
  border-bottom: 1px solid var(--jelly);
}

.scope-body a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.guide-next {
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.guide-next h2 {
  margin-bottom: 16px;
}

.next-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 24px;
}

.next-links li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.next-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.next-links a:hover {
  color: var(--jelly-dark);
}

.next-links span {
  font-size: 13px;
  color: var(--mist);
}

/* ==========================================================================
   pages — updates
   ========================================================================== */

.page-head {
  padding-top: 8px;
}

.updates-table-section,
.change-types,
.affected-pages,
.scope-update {
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.updates-table-section h2,
.change-types h2,
.affected-pages h2,
.scope-update h2 {
  margin-bottom: 8px;
}

.updates-table-section .section-note,
.change-types .section-note,
.affected-pages .section-note {
  margin-bottom: 18px;
}

.updates-table {
  border-top: 1px solid var(--ink);
}

.updates-table tbody tr:hover {
  background: var(--bone-deep);
}

.updates-table tbody td {
  color: var(--ink-soft);
}

.updates-figure {
  margin-top: 40px;
}

.updates-figure img {
  aspect-ratio: 16 / 9;
}

.change-type-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.change-type-item {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.change-type-item h3 {
  margin-bottom: 6px;
  font-size: 1rem;
  color: var(--jelly-dark);
}

.change-type-item p {
  font-size: 14px;
  color: var(--ink-soft);
}

.affected-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink);
}

.affected-list li {
  border-bottom: 1px solid var(--line);
}

.affected-list a {
  display: block;
  padding: 13px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-soft);
}

.affected-list a:hover {
  color: var(--jelly-dark);
}

.scope-update p {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: var(--reading);
  margin-bottom: 12px;
}

.scope-back a {
  font-size: 15px;
  font-weight: 600;
  color: var(--jelly-dark);
  border-bottom: 1px solid var(--jelly);
}

.scope-back a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* ==========================================================================
   pages — suggestions
   ========================================================================== */

.page-intro {
  padding-top: 8px;
}

.page-layout.content-narrow {
  display: block;
  max-width: var(--reading);
  margin-top: 36px;
}

.block {
  margin-top: 44px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}

.block:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.block-head {
  margin-bottom: 20px;
}

.block-head h2 {
  margin-bottom: 8px;
}

.block-note {
  font-size: 15px;
  color: var(--mist);
  max-width: 640px;
}

.scope-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink);
}

.scope-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.scope-body h3 {
  margin-bottom: 4px;
  font-size: 1rem;
}

.scope-body p {
  font-size: 14px;
  color: var(--ink-soft);
}

.scope-list-plain .scope-index {
  color: var(--mist);
}

.suggestion-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.suggestion-card {
  padding: 18px 20px;
  background: var(--bone-deep);
  border-radius: var(--radius);
}

.suggestion-card h3 {
  margin-bottom: 6px;
  font-size: 1rem;
}

.suggestion-card p {
  font-size: 14px;
  color: var(--ink-soft);
}

.suggestion-media {
  margin-top: 8px;
}

.suggestion-media img {
  aspect-ratio: 16 / 9;
}

.block-privacy {
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.block-privacy .block-head {
  margin-bottom: 12px;
}

.block-privacy p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.block-privacy a {
  color: var(--jelly-dark);
  font-weight: 600;
  border-bottom: 1px solid var(--jelly);
}

.block-privacy a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.block-related .related-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 0;
  padding: 0;
  border-top: 0;
}

.block-related .related-links li {
  border-bottom: 1px solid var(--line);
}

.block-related .related-links a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-soft);
}

.block-related .related-links a:hover {
  color: var(--jelly-dark);
}

/* ==========================================================================
   pages — 404
   ========================================================================== */

.error-main {
  padding-top: 64px;
  padding-bottom: 80px;
}

.error-panel {
  max-width: 640px;
}

.error-code {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--jelly-dark);
  margin-bottom: 12px;
}

.error-panel h1 {
  font-size: clamp(2rem, 4.4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
}

.error-lead {
  font-size: 1.0625rem;
  color: var(--ink-soft);
  max-width: 520px;
  margin-bottom: 26px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.error-home,
.error-sub {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
}

.error-home {
  background: var(--jelly);
  color: var(--ink);
}

.error-home:hover {
  background: var(--jelly-dark);
  color: #fff;
}

.error-sub {
  border: 1px solid var(--ink);
  color: var(--ink);
}

.error-sub:hover {
  background: var(--ink);
  color: var(--bone);
}

.error-ways {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
  max-width: 640px;
}

.error-ways h2 {
  margin-bottom: 8px;
}

.error-ways > p {
  font-size: 15px;
  color: var(--mist);
  margin-bottom: 18px;
}

.error-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ink);
}

.error-list li {
  border-bottom: 1px solid var(--line);
}

.error-list a {
  display: block;
  padding: 13px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-soft);
}

.error-list a:hover {
  color: var(--jelly-dark);
}

/* ==========================================================================
   responsive
   ========================================================================== */

@media (max-width: 880px) {
  .header-top {
    padding: 14px 20px;
    gap: 14px;
    flex-wrap: wrap;
  }

  .brand {
    order: 1;
    font-size: 1.15rem;
  }

  .nav-toggle {
    order: 2;
    display: flex;
    margin-left: auto;
  }

  .zone-picker {
    order: 3;
    width: 100%;
  }

  .zone-toggle {
    width: 100%;
    justify-content: space-between;
  }

  .zone-menu {
    width: 100%;
    min-width: 0;
  }

  .site-nav {
    order: 4;
    margin-left: 0;
    width: 100%;
    display: none;
  }

  .site-nav.is-open {
    display: block;
    padding: 8px 0 4px;
    border-top: 1px solid var(--line-dark);
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav li {
    border-bottom: 1px solid var(--line-dark);
  }

  .site-nav a {
    display: block;
    min-height: 44px;
    padding: 11px 2px;
    border-bottom: 0;
  }

  .site-nav a.is-current {
    border-bottom: 0;
  }

  .header-note {
    padding: 0 20px 12px;
  }

  .site-main {
    padding: 0 20px;
  }

  .inner-main,
  .home-main {
    padding-bottom: 56px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding-top: 28px;
  }

  .hero-text {
    max-width: none;
  }

  .hero-text h1 {
    font-size: clamp(2rem, 8vw, 2.8rem);
  }

  .hero-lead {
    max-width: none;
  }

  .hero-media img {
    aspect-ratio: 16 / 10;
  }

  .channel-row article {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 14px;
  }

  .row-link {
    grid-column: 2;
    justify-self: start;
    margin-top: 6px;
  }

  .spot-card {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding: 20px;
  }

  .feature-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .batch-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .entry-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .page-aside {
    position: static;
    margin-top: 0;
  }

  .channel-table-head {
    display: none;
  }

  .channel-table .channel-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    padding: 20px 0;
  }

  .editor-desk,
  .feature-lead,
  .feature-relation {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
  }

  .precheck-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .order-steps {
    grid-template-columns: minmax(0, 1fr);
  }

  .feature-relation h2 {
    grid-column: auto;
  }

  .change-type-list,
  .suggestion-grid,
  .next-links,
  .block-related .related-links {
    grid-template-columns: minmax(0, 1fr);
  }

  .program-table,
  .check-table,
  .updates-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .program-table thead,
  .check-table thead,
  .updates-table thead {
    display: none;
  }

  .program-table tbody,
  .check-table tbody,
  .updates-table tbody {
    display: block;
    white-space: normal;
  }

  .program-table tbody tr,
  .check-table tbody tr,
  .updates-table tbody tr {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .program-table tbody td,
  .check-table tbody td,
  .updates-table tbody td,
  .updates-table tbody th {
    display: block;
    padding: 4px 0;
    border-bottom: 0;
    white-space: normal;
  }

  .updates-table tbody th {
    font-size: 15px;
    margin-bottom: 4px;
  }

  .footer-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
    padding: 44px 20px 32px;
  }

  .footer-bottom {
    padding: 20px 20px 30px;
  }
}

@media (max-width: 560px) {
  .header-top {
    padding: 12px 16px;
  }

  .site-main {
    padding: 0 16px;
  }

  .header-note {
    padding: 0 16px 12px;
    font-size: 12px;
  }

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .fact-row {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 12px;
  }

  .channel-row article {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .section-head {
    padding-top: 40px;
    margin-bottom: 20px;
  }

  .page-title {
    font-size: clamp(1.9rem, 8.4vw, 2.4rem);
  }

  .page-meta,
  .title-meta {
    gap: 10px 24px;
  }

  .page-meta-item,
  .page-meta > div,
  .title-meta > div {
    min-width: 96px;
  }

  .step-item {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 12px;
  }

  .scope-item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }

  .spot-card {
    padding: 16px;
  }

  .guide-entry,
  .scope-privacy,
  .block-privacy {
    padding: 20px;
  }

  .footer-cols {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 36px 16px 26px;
  }

  .footer-bottom {
    padding: 18px 16px 26px;
    flex-direction: column;
    gap: 6px;
  }

  .related-links {
    gap: 8px 14px;
  }

  .error-actions {
    flex-direction: column;
  }

  .error-home,
  .error-sub {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}