:root {
  color-scheme: light;
  --ink: #172947;
  --ink-soft: #435875;
  --blue: #3f7ee8;
  --blue-dark: #2865cf;
  --blue-pale: #eaf3ff;
  --paper: #fffefb;
  --paper-blue: #f6faff;
  --cream: #fff8e8;
  --yellow: #ffd878;
  --peach: #f4b8a5;
  --green: #6baa87;
  --line: #cad9ed;
  --line-soft: #e5edf7;
  --shadow: 0 18px 50px rgba(35, 75, 131, 0.1);
  --radius: 18px;
  --shell: min(1360px, calc(100% - 48px));
  --narrow: min(850px, calc(100% - 48px));
  --font-zh-sans: "PingFang SC", "Noto Sans CJK SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  --font-ja-sans: "Hiragino Sans", "Yu Gothic", "Noto Sans CJK JP", Meiryo, sans-serif;
  --font-zh-serif: "Songti SC", STSong, "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --font-ja-serif: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif CJK JP", serif;
  --font-ja-hand: YuKyokasho, "Yu Kyokasho", Klee, "Klee One", "Hiragino Mincho ProN", serif;
  --sans: var(--font-zh-sans);
  --serif: var(--font-zh-serif);
}

[data-theme="dark"] {
  color-scheme: dark;
  --ink: #eaf2ff;
  --ink-soft: #afc0d8;
  --paper: #111b2b;
  --paper-blue: #152238;
  --cream: #202a39;
  --blue-pale: #1e3150;
  --line: #344966;
  --line-soft: #293b55;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

:lang(zh-CN) {
  font-family: var(--font-zh-sans);
}

:lang(ja) {
  font-family: var(--font-ja-sans);
  font-kerning: normal;
  font-synthesis: none;
  font-variant-east-asian: proportional-width;
}

:lang(en) {
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(rgba(62, 126, 232, 0.045) 0.8px, transparent 0.8px);
  background-size: 7px 7px;
  content: "";
  pointer-events: none;
}

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(63, 126, 232, 0.35);
  outline-offset: 3px;
}

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

.qr-image {
  aspect-ratio: 1 / 1;
  height: auto;
  object-fit: contain;
}

.sr-only,
.skip-link:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 99;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper);
}

.section-shell {
  width: var(--shell);
  margin-inline: auto;
}

.section-shell.narrow {
  width: var(--narrow);
}

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  height: 78px;
  border-bottom: 1px solid rgba(202, 217, 237, 0.75);
  background: color-mix(in srgb, var(--paper) 91%, transparent);
  backdrop-filter: blur(18px);
}

.nav-shell {
  width: var(--shell);
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 30px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--ink);
  text-decoration: none;
}

.brand-logo {
  width: 260px;
  display: grid;
  flex: 0 0 auto;
}

.brand-lockup {
  grid-area: 1 / 1;
  width: 100%;
  height: auto;
  display: block;
}

.brand-lockup-dark {
  display: none;
}

.brand-lockup-mobile-light,
.brand-lockup-mobile-dark {
  display: none;
}

[data-theme="dark"] .brand-lockup-light {
  display: none;
}

[data-theme="dark"] .brand-lockup-dark {
  display: block;
}

.brand small {
  margin-left: 5px;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-rice {
  position: relative;
  width: 46px;
  height: 42px;
  display: inline-block;
  transform: translateY(1px);
  border: 3px solid var(--ink);
  border-radius: 50% 50% 38% 38% / 62% 62% 36% 36%;
  background: #fff;
}

.brand-rice::before,
.brand-rice::after {
  position: absolute;
  top: 19px;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--ink);
  content: "";
}

.brand-rice::before {
  left: 12px;
}

.brand-rice::after {
  right: 12px;
}

.brand-rice i {
  position: absolute;
  bottom: -1px;
  left: 50%;
  width: 18px;
  height: 15px;
  transform: translateX(-50%);
  border-radius: 3px 3px 6px 6px;
  background: var(--ink);
}

.site-nav {
  height: 100%;
  margin-left: auto;
  display: flex;
  align-items: stretch;
  gap: 36px;
}

.mobile-nav-heading,
.mobile-nav-mini-program,
.footer-mini-program {
  display: none;
}

.site-nav a {
  position: relative;
  display: grid;
  place-items: center;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 13px;
  left: 0;
  height: 3px;
  transform: scaleX(0);
  border-radius: 3px;
  background: var(--blue);
  content: "";
  transition: transform 160ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--blue);
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-about-menu,
.nav-grammar-menu {
  position: relative;
  height: 100%;
  display: grid;
  align-items: stretch;
}

.nav-grammar-flyout {
  position: absolute;
  z-index: 35;
  top: calc(100% - 1px);
  left: 50%;
  width: 332px;
  padding: 10px;
  display: grid;
  gap: 8px;
  transform: translateX(-50%);
  border: 1px solid var(--line);
  border-radius: 17px;
  background: color-mix(in srgb, var(--paper) 97%, transparent);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease;
}

.nav-grammar-flyout .nav-grammar-flyout-card {
  min-height: 72px;
  padding: 12px 13px;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 20px;
  align-items: center;
  column-gap: 11px;
  border: 1px solid transparent;
  border-left: 4px solid var(--blue);
  border-radius: 12px;
  background: color-mix(in srgb, var(--paper-blue) 72%, var(--paper));
  font-size: 14px;
}

.nav-grammar-menu > a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-submenu-caret {
  color: var(--blue);
  font-family: var(--font-zh-sans);
  font-size: 15px;
  font-style: normal;
  line-height: 1;
  transition: transform 150ms ease;
}

.nav-grammar-flyout .nav-grammar-flyout-card::after {
  display: none;
}

.nav-grammar-flyout .nav-grammar-flyout-card:hover,
.nav-grammar-flyout .nav-grammar-flyout-card[aria-current="page"] {
  border-color: color-mix(in srgb, var(--blue) 35%, var(--line));
  background: color-mix(in srgb, var(--paper-blue) 88%, var(--paper));
}

.nav-grammar-card-icon {
  width: 48px;
  height: 48px;
  position: relative;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--paper) 72%, var(--blue));
}

.nav-grammar-card-icon.is-search::before {
  width: 20px;
  height: 20px;
  display: block;
  border: 4px solid var(--blue);
  border-radius: 50%;
  content: "";
}

.nav-grammar-card-icon.is-search::after {
  position: absolute;
  width: 13px;
  height: 4px;
  right: 8px;
  bottom: 11px;
  transform: rotate(46deg);
  border-radius: 4px;
  background: var(--blue);
  content: "";
}

.nav-grammar-card-icon.is-category::before {
  width: 25px;
  height: 18px;
  border: 3px solid var(--blue);
  border-radius: 3px;
  content: "";
}

.nav-grammar-card-icon.is-category::after {
  position: absolute;
  top: 10px;
  left: 12px;
  width: 11px;
  height: 7px;
  border: 3px solid var(--blue);
  border-bottom: 0;
  border-radius: 3px 3px 0 0;
  background: color-mix(in srgb, var(--paper) 72%, var(--blue));
  content: "";
}

.nav-grammar-card-copy {
  min-width: 0;
  display: grid;
  gap: 4px;
}

.nav-grammar-card-copy strong {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.15;
}

.nav-grammar-card-copy em {
  padding: 3px 7px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--blue) 13%, var(--paper));
  color: var(--blue);
  font-family: var(--font-zh-sans);
  font-size: 10px;
  font-style: normal;
  font-weight: 800;
}

.nav-grammar-flyout .nav-grammar-card-copy small {
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.45;
}

.nav-grammar-card-arrow {
  color: var(--blue);
  font-family: var(--font-zh-sans);
  font-size: 27px;
  font-weight: 400;
  line-height: 1;
}

.nav-grammar-menu:hover .nav-grammar-flyout,
.nav-grammar-menu:focus-within .nav-grammar-flyout {
  opacity: 1;
  pointer-events: auto;
}

.nav-grammar-menu:hover .nav-submenu-caret,
.nav-grammar-menu:focus-within .nav-submenu-caret {
  transform: rotate(180deg);
}

.nav-qr-flyout {
  position: absolute;
  z-index: 35;
  top: calc(100% - 4px);
  left: 50%;
  width: 284px;
  padding: 13px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 11px;
  transform: translate(-50%, 8px);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: color-mix(in srgb, var(--paper) 97%, transparent);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms ease, transform 150ms ease;
}

.nav-about-menu:hover .nav-qr-flyout,
.nav-about-menu:focus-within .nav-qr-flyout {
  transform: translate(-50%, 0);
  opacity: 1;
  pointer-events: auto;
}

.nav-qr-flyout figure {
  margin: 0;
  display: grid;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
}

.theme-toggle,
.nav-toggle {
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

.theme-toggle {
  width: 38px;
  height: 38px;
  font-size: 28px;
  line-height: 1;
}

.nav-toggle {
  display: none;
}

.home-hero {
  position: relative;
  overflow: hidden;
  min-height: 520px;
  border-bottom: 1px solid var(--line-soft);
  background:
    linear-gradient(90deg, rgba(247, 251, 255, 0.97) 0%, rgba(247, 251, 255, 0.94) 38%, rgba(247, 251, 255, 0.12) 68%),
    var(--paper-blue);
}

[data-theme="dark"] .home-hero {
  background: linear-gradient(90deg, #152238 0%, rgba(21, 34, 56, 0.96) 43%, rgba(21, 34, 56, 0.4) 75%);
}

.hero-shell {
  position: relative;
  width: min(1536px, 100%);
  min-height: 520px;
  margin: 0 auto;
}

.hero-copy {
  position: relative;
  z-index: 3;
  width: min(720px, calc(100% - 48px));
  padding: 78px 0 54px;
  margin-left: max(24px, calc((100% - 1360px) / 2));
}

.eyebrow,
.section-kicker {
  margin: 0 0 9px;
  color: var(--blue);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(42px, 5.2vw, 67px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.02em;
}

.hero-copy h1 span {
  position: relative;
}

.hero-copy h1 span::after {
  position: absolute;
  z-index: -1;
  right: -5px;
  bottom: 2px;
  left: -5px;
  height: 12px;
  transform: rotate(-1deg);
  border-radius: 50%;
  background: rgba(255, 216, 120, 0.65);
  content: "";
}

.hero-lead {
  max-width: 620px;
  margin: 18px 0 25px;
  color: var(--ink-soft);
  font-size: 16px;
}

.hero-search {
  width: min(690px, 100%);
  min-height: 64px;
  padding: 6px 7px 6px 20px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 13px;
  border: 2px solid var(--ink);
  border-radius: 34px;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  box-shadow: 0 7px 0 rgba(63, 126, 232, 0.12);
}

.hero-search > span {
  font-size: 29px;
  line-height: 1;
}

.hero-search input {
  min-width: 0;
  height: 46px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font-size: 15px;
}

.hero-search button,
.catalog-search button {
  border: 0;
  border-radius: 28px;
  background: linear-gradient(135deg, #5b94ef, var(--blue));
  box-shadow: 0 7px 18px rgba(63, 126, 232, 0.24);
  color: white;
  cursor: pointer;
  font-weight: 800;
}

.hero-search button {
  min-width: 118px;
  height: 48px;
}

.hot-searches {
  margin-top: 18px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

.hot-searches a,
.level-links a,
.tag-cloud a,
.tag-cloud span {
  padding: 5px 13px;
  border-radius: 999px;
  background: var(--blue-pale);
  color: var(--ink);
  text-decoration: none;
  transition: transform 150ms ease, background 150ms ease;
}

.hot-searches a:hover,
.level-links a:hover,
.tag-cloud a:hover {
  transform: translateY(-2px);
  background: #dcecff;
}

.hero-art {
  position: absolute;
  z-index: 1;
  inset: 0 0 0 25%;
  overflow: hidden;
}

.hero-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-art::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--paper-blue) 0%, transparent 24%);
  content: "";
}

.hero-note {
  position: absolute;
  z-index: 2;
  top: 58px;
  right: 32%;
  padding: 14px 24px;
  transform: rotate(-3deg);
  border: 1px solid #c9a777;
  background: rgba(255, 248, 232, 0.92);
  box-shadow: 3px 4px 0 rgba(70, 50, 30, 0.08);
  color: #453b32;
  font-family: var(--font-ja-hand);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  text-align: center;
}

.home-content {
  padding: 28px 0 50px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 350px;
  gap: 40px;
  align-items: start;
}

.home-main {
  grid-column: 1;
  grid-row: 1;
}

.home-recommendations {
  grid-column: 1 / -1;
  grid-row: 2;
  padding: 0;
}

.section-heading {
  margin-bottom: 18px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
}

.section-heading h2,
.side-card h2 {
  margin: 0;
  font-family: var(--serif);
}

.section-heading h2 {
  font-size: 23px;
}

.section-heading h2 > span,
.side-card h2 > span {
  color: var(--blue);
}

.section-heading > a {
  color: var(--ink-soft);
  font-size: 13px;
  text-decoration: none;
}

.section-heading > a span {
  color: var(--blue);
  font-size: 18px;
}

.grammar-stack {
  display: grid;
  gap: 10px;
}

.grammar-card > a {
  min-height: 110px;
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 45px minmax(0, 1fr) 20px;
  align-items: center;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--paper) 96%, var(--blue-pale));
  color: var(--ink);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.grammar-card > a:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
  box-shadow: 0 10px 30px rgba(35, 75, 131, 0.1);
}

.grammar-card-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid #e2bc5f;
  border-radius: 13px;
  background: #fff4ca;
  color: #b8791e;
  font-size: 22px;
}

.grammar-card-title {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.grammar-card-title h3 {
  margin: 0 5px 0 0;
  color: var(--blue-dark);
  font-family: var(--serif);
  font-size: 19px;
}

.grammar-card-title h3:lang(ja),
.grammar-detail-header h1:lang(ja),
.form-grid h3:lang(ja),
.collocation-list h3:lang(ja),
.grammar-toc h2:lang(ja),
.article-card h2:lang(ja),
.article-header h1:lang(ja),
.page-hero h1:lang(ja) {
  font-family: var(--font-ja-serif);
}

.meaning-chip,
.level-chip {
  display: inline-flex;
  align-items: center;
  min-height: 25px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-decoration: none;
}

.meaning-chip {
  background: #f0f3f8;
  color: var(--ink-soft);
}

[data-theme="dark"] .meaning-chip {
  background: #263850;
}

.level-chip {
  background: #e5f5e9;
  color: #2e8256;
}

.level-n1 {
  background: #ffe8e5;
  color: #c35045;
}

.level-n2 {
  background: #fff0dc;
  color: #bd702e;
}

.level-n3 {
  background: #fff1e5;
  color: #dc704a;
}

.level-n4 {
  background: #e7f0ff;
  color: #3474d8;
}

.grammar-card-copy > p {
  margin: 5px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.grammar-card-copy > small {
  display: block;
  margin-top: 3px;
  color: var(--ink-soft);
  font-size: 12px;
}

.grammar-card-arrow {
  color: var(--ink);
  font-size: 30px;
  font-weight: 300;
}

.home-sidebar {
  grid-column: 2;
  grid-row: 1 / span 2;
  display: grid;
  gap: 12px;
}

.side-card {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--paper) 96%, var(--cream));
  box-shadow: 0 8px 24px rgba(35, 75, 131, 0.04);
}

.side-card h2 {
  font-size: 18px;
}

.about-card {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 17px;
  background: linear-gradient(135deg, var(--cream), var(--paper));
}

.avatar {
  width: 82px;
  height: 82px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #ffe8a9;
}

.avatar .brand-rice {
  transform: scale(1.05);
}

.avatar img {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
}

.about-card p:not(.section-kicker) {
  margin: 8px 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.about-card a {
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.recent-list {
  margin-top: 12px;
  display: grid;
}

.recent-list a {
  position: relative;
  margin: 0 -8px;
  padding: 9px 30px 9px 8px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  border-bottom: 1px dashed var(--line-soft);
  border-radius: 10px;
  color: var(--ink);
  font-size: 13px;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.recent-list a::after {
  position: absolute;
  top: 50%;
  right: 9px;
  color: var(--blue);
  content: "›";
  font-size: 22px;
  font-weight: 300;
  line-height: 1;
  opacity: 0;
  transform: translateY(-50%) translateX(-3px);
  transition: opacity 160ms ease, transform 160ms ease;
}

.recent-list a:hover,
.recent-list a:focus-visible {
  background: color-mix(in srgb, var(--paper-blue) 78%, var(--paper));
  box-shadow: inset 3px 0 0 var(--blue), 0 5px 15px rgba(35, 75, 131, 0.08);
  color: var(--blue-dark);
  outline: none;
}

.recent-list a:hover::after,
.recent-list a:focus-visible::after {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.recent-list time {
  color: var(--ink-soft);
  font-size: 11px;
}

.tag-cloud {
  margin-top: 13px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
}

.home-motto {
  margin: 0 auto 36px;
  color: var(--ink-soft);
  font-family: var(--font-ja-hand);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.7);
  text-align: center;
}

.recommended-article-grid .article-card--text .article-card-body {
  min-height: 218px;
}

.home-motto span {
  color: var(--peach);
}

.page-hero {
  padding: 78px 0 55px;
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(circle at 85% 25%, rgba(120, 175, 239, 0.2), transparent 25rem),
    var(--paper-blue);
}

.page-hero.compact {
  padding: 82px 0 65px;
}

.page-hero h1 {
  max-width: 900px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.25;
}

.page-hero .section-shell > p:last-child {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--ink-soft);
}

.grammar-page-hero {
  padding-bottom: 34px;
}

.catalog-search {
  margin-top: 28px;
  padding: 9px;
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 145px 190px 100px;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.catalog-search input,
.catalog-search select {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line-soft);
  border-radius: 9px;
  outline: 0;
  background: var(--paper-blue);
  color: var(--ink);
}

.catalog-search button {
  border-radius: 9px;
}

.level-links {
  margin-top: 19px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
}

.grammar-classification-page {
  padding: 42px 0 76px;
}

.classification-section + .classification-section {
  margin-top: 54px;
}

.level-directory-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.level-directory-card {
  min-height: 150px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  box-shadow: 0 8px 22px rgba(35, 75, 131, 0.05);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.level-directory-card:hover {
  transform: translateY(-3px);
  border-color: var(--blue);
  box-shadow: 0 13px 28px rgba(35, 75, 131, 0.12);
}

.level-directory-card strong {
  color: currentColor;
  font-family: var(--font-ja-serif);
  font-size: 32px;
}

.level-directory-card span {
  margin-top: 7px;
  color: var(--ink-soft);
  font-size: 12px;
}

.level-directory-card b {
  margin-top: auto;
  color: var(--blue);
  font-size: 12px;
}

.semantic-directory-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.semantic-directory-card {
  min-height: 218px;
  padding: 21px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: color-mix(in srgb, var(--paper) 97%, var(--blue-pale));
}

.semantic-directory-card h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 22px;
}

.semantic-directory-card h3 a,
.semantic-directory-more {
  color: var(--ink);
  text-decoration: none;
}

.semantic-directory-card h3 a:hover,
.semantic-directory-more:hover {
  color: var(--blue);
}

.semantic-directory-card p {
  min-height: 40px;
  margin: 9px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.55;
}

.semantic-child-links {
  margin: 15px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.semantic-child-links a {
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--paper-blue);
  color: var(--ink-soft);
  font-size: 12px;
  text-decoration: none;
}

.semantic-child-links a:hover {
  background: #dcecff;
  color: var(--blue-dark);
}

.semantic-directory-more {
  margin-top: auto;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.catalog-results {
  padding: 34px 0 70px;
}

.result-bar {
  margin-bottom: 15px;
  display: flex;
  justify-content: space-between;
  color: var(--ink-soft);
  font-size: 13px;
}

.result-bar p {
  margin: 0;
}

.result-bar a {
  color: var(--blue);
}

.pagination {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--ink-soft);
  font-size: 13px;
  text-align: center;
}

.pagination-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.pagination a,
.pagination-current {
  min-width: 40px;
  box-sizing: border-box;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
  color: var(--blue);
  text-decoration: none;
}

.pagination a:hover {
  border-color: var(--blue);
  background: var(--blue-pale);
}

.pagination-current {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
  font-weight: 700;
}

.pagination-summary {
  color: var(--ink-soft);
}

.grammar-detail-header {
  padding: 42px 0 55px;
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(circle at 80% 10%, rgba(255, 216, 120, 0.22), transparent 20rem),
    var(--paper-blue);
}

.breadcrumbs {
  margin-bottom: 38px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 12px;
}

.breadcrumbs a {
  color: var(--blue);
  text-decoration: none;
}

.grammar-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.grammar-detail-header h1 {
  margin: 14px 0 4px;
  line-height: 1.25;
}

.grammar-detail-header h1 > span {
  display: block;
  font-family: var(--font-ja-serif);
  font-size: clamp(38px, 6vw, 66px);
  font-weight: 700;
  word-break: break-word;
}

.grammar-detail-header h1 > small {
  margin-top: 12px;
  display: block;
  color: var(--blue-dark);
  font-family: var(--font-zh-sans);
  font-size: clamp(19px, 2.2vw, 29px);
  font-weight: 750;
  letter-spacing: 0.015em;
}

.grammar-separator {
  margin-inline: 0.12em;
  display: inline-block;
  transform: translateY(-0.04em);
  font-family: var(--font-ja-sans);
  font-size: 0.72em;
  font-weight: 500;
}

.grammar-reading {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.grammar-summary {
  margin: 20px 0 24px;
  color: var(--ink-soft);
  font-size: 18px;
}

.translation-box {
  padding: 16px 20px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 15px;
  border-left: 4px solid var(--yellow);
  border-radius: 0 12px 12px 0;
  background: var(--cream);
}

.translation-box span {
  color: var(--ink-soft);
  font-size: 12px;
}

.translation-box strong {
  font-size: 15px;
}

.grammar-detail-layout {
  padding: 48px 0 80px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 290px;
  gap: 55px;
  align-items: start;
}

.grammar-detail-main {
  min-width: 0;
}

.detail-block {
  margin-bottom: 22px;
  padding: 27px 30px;
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  background: var(--paper);
}

.detail-block h2 {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: 23px;
}

.detail-block > p:last-child {
  margin: 0;
  color: var(--ink-soft);
}

.form-grid,
.collocation-list {
  display: grid;
  gap: 10px;
}

.form-grid article,
.collocation-list article {
  padding: 17px 18px;
  border-radius: 12px;
  background: var(--paper-blue);
}

.form-grid h3,
.collocation-list h3 {
  margin: 0;
  color: var(--blue-dark);
  font-family: var(--serif);
}

.construction {
  margin-top: 10px;
  padding-top: 10px;
  display: grid;
  gap: 3px;
  border-top: 1px dashed var(--line);
}

.construction span,
.collocation-list small,
.collocation-list span {
  color: var(--ink-soft);
  font-size: 12px;
}

.example-list {
  padding: 0;
  margin: 0;
  display: grid;
  gap: 11px;
  list-style: none;
  counter-reset: examples;
}

.example-list li {
  position: relative;
  padding: 18px 20px 18px 58px;
  border-radius: 12px;
  background: var(--paper-blue);
  counter-increment: examples;
}

.example-list li::before {
  position: absolute;
  top: 17px;
  left: 18px;
  color: var(--blue);
  content: counter(examples, decimal-leading-zero);
  font-size: 12px;
  font-weight: 800;
}

.example-list p {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.example-list small {
  display: block;
  margin-top: 4px;
  color: var(--ink-soft);
}

.example-list strong {
  display: block;
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 500;
}

.grammar-toc {
  position: sticky;
  top: 104px;
}

.grammar-toc > div {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--cream);
}

.grammar-toc h2 {
  margin: 0 0 20px;
  font-family: var(--serif);
  font-size: 19px;
}

.grammar-toc h3 {
  margin: 20px 0 8px;
  font-size: 12px;
}

.grammar-toc nav {
  display: grid;
}

.grammar-toc nav a {
  padding: 8px 0;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--line);
  color: var(--blue);
  font-size: 13px;
  text-decoration: none;
}

.grammar-learning-layout {
  padding: 48px 0 80px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 42px;
  align-items: start;
}

.grammar-learning-main {
  min-width: 0;
}

.understanding-card,
.translation-card,
.locked-learning-card,
.locked-collocation-card,
.related-grammar-block,
.connection-card {
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  background: var(--paper);
}

.understanding-card {
  margin-bottom: 16px;
  padding: 30px;
  background:
    radial-gradient(circle at 94% 12%, rgba(255, 216, 120, 0.24), transparent 11rem),
    var(--paper);
}

.understanding-card h2,
.locked-learning-card h2,
.locked-collocation-card h2,
.related-grammar-block h2,
.connection-card h2 {
  margin: 2px 0 10px;
  font-family: var(--font-zh-serif);
  font-size: 24px;
}

.understanding-card > p:not(.section-kicker) {
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
}

.understanding-translation {
  margin-top: 22px;
  padding: 17px 20px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 18px;
  border-left: 5px solid var(--yellow);
  border-radius: 0 13px 13px 0;
  background: var(--cream);
}

.understanding-translation span {
  color: var(--ink-soft);
  font-size: 13px;
}

.understanding-translation strong {
  font-size: 17px;
}

.translation-card {
  margin-bottom: 22px;
  padding: 18px 22px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 18px;
  border-left: 5px solid var(--yellow);
  background: var(--cream);
}

.translation-card span {
  color: var(--ink-soft);
  font-size: 13px;
}

.translation-card strong {
  font-size: 17px;
}

.locked-learning-card {
  margin-bottom: 22px;
  padding: 28px 30px;
  border-color: color-mix(in srgb, var(--blue) 35%, var(--line-soft));
  background:
    linear-gradient(135deg, rgba(63, 126, 232, 0.07), transparent 48%),
    var(--paper);
}

.locked-intro {
  margin: 0 0 20px;
  color: var(--ink-soft);
}

.search-preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.search-preview-grid article {
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: 13px;
  background: var(--paper-blue);
}

.search-preview-grid h3 {
  margin: 0 0 6px;
  font-size: 15px;
}

.search-preview-grid p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.mini-program-button {
  width: 100%;
  min-height: 58px;
  margin-top: 18px;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 0;
  border-radius: 14px;
  background: var(--blue);
  color: #fff;
  cursor: pointer;
  font-weight: 800;
}

.mini-program-button small {
  opacity: 0.78;
  font-size: 11px;
}

.mini-program-inline {
  margin-top: 15px;
  padding-top: 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px dashed var(--line);
}

.mini-program-inline p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.mini-program-inline button,
.locked-collocation-card button {
  min-height: 42px;
  padding: 8px 15px;
  flex: 0 0 auto;
  border: 1px solid var(--blue);
  border-radius: 11px;
  background: var(--paper);
  color: var(--blue-dark);
  cursor: pointer;
  font-size: 13px;
  font-weight: 800;
}

.locked-collocation-card {
  margin-bottom: 22px;
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  background: var(--cream);
}

.locked-collocation-card p:last-child {
  margin: 0;
  color: var(--ink-soft);
}

.related-grammar-block {
  padding: 27px 30px;
}

.related-grammar-block nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.related-grammar-block a {
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  border-radius: 11px;
  background: var(--paper-blue);
  color: var(--blue-dark);
  text-decoration: none;
}

.grammar-connection-panel {
  position: sticky;
  top: 104px;
}

.grammar-side-column {
  display: grid;
  gap: 18px;
  align-content: start;
}

.connection-card {
  padding: 24px;
  border-color: var(--line);
  background: var(--cream);
}

.connection-card .form-grid article {
  border: 1px solid color-mix(in srgb, var(--line) 75%, transparent);
  background: var(--paper);
}

.connection-card .form-grid h3 {
  font-family: var(--font-ja-serif);
  font-size: 16px;
  line-height: 1.55;
}

.connection-card .form-grid article > p,
.connection-empty {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.connection-meta {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
}

.connection-meta h3 {
  margin: 0 0 9px;
  font-size: 13px;
}

.additional-explanation-card,
.practice-guide-card,
.related-grammar-side {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
}

.additional-explanation-card {
  background:
    linear-gradient(145deg, rgba(63, 126, 232, 0.08), transparent 52%),
    var(--paper);
}

.additional-explanation-card h2,
.related-grammar-side h2 {
  margin: 2px 0 14px;
  font-family: var(--font-zh-serif);
  font-size: 21px;
}

.explanation-accordion {
  display: grid;
  gap: 8px;
}

.explanation-accordion details {
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: var(--paper);
}

.explanation-accordion summary {
  min-height: 48px;
  padding: 11px 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
  list-style: none;
}

.explanation-accordion summary::-webkit-details-marker {
  display: none;
}

.explanation-accordion summary i {
  color: var(--blue);
  font-size: 17px;
  font-style: normal;
  transition: transform 160ms ease;
}

.explanation-accordion details[open] summary i {
  transform: rotate(45deg);
}

.explanation-accordion details > p {
  margin: 0;
  padding: 0 13px 14px;
  color: var(--ink-soft);
  font-size: 13px;
}

.practice-guide-card {
  background:
    radial-gradient(circle at 94% 12%, rgba(255, 216, 120, 0.38), transparent 9rem),
    var(--cream);
}

.practice-count {
  margin: 1px 0 10px;
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.practice-count strong {
  color: var(--blue-dark);
  font-family: var(--font-zh-serif);
  font-size: 40px;
  line-height: 1;
}

.practice-count span {
  font-size: 16px;
  font-weight: 800;
}

.practice-guide-card > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.practice-qr {
  margin-top: 16px;
  padding: 10px;
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  align-items: center;
  gap: 11px;
  border: 1px solid color-mix(in srgb, var(--blue) 28%, var(--line-soft));
  border-radius: 14px;
  background: var(--paper);
}

.practice-qr img {
  width: 104px;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 10px;
  background: #fff;
}

.practice-qr div {
  min-width: 0;
}

.practice-qr strong,
.practice-qr span,
.practice-qr em {
  display: block;
}

.practice-qr strong {
  font-size: 13px;
  line-height: 1.35;
}

.practice-qr span {
  margin-top: 3px;
  color: var(--ink-soft);
  font-size: 10px;
}

.practice-qr em {
  margin-top: 7px;
  overflow: hidden;
  color: var(--blue-dark);
  font-family: var(--font-ja-sans);
  font-size: 12px;
  font-style: normal;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.practice-guide-card button {
  width: 100%;
  min-height: 46px;
  margin-top: 16px;
  border: 0;
  border-radius: 12px;
  background: var(--blue);
  color: #fff;
  cursor: pointer;
  font-size: 13px;
  font-weight: 800;
}

.related-grammar-side nav {
  display: grid;
  gap: 7px;
}

.related-grammar-side a {
  padding: 9px 11px;
  display: flex;
  justify-content: space-between;
  border-radius: 10px;
  background: var(--blue-pale);
  color: var(--blue-dark);
  font-size: 13px;
  text-decoration: none;
}

.collocation-list-full {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.collocation-list-full article {
  border: 1px solid var(--line-soft);
}

.collocation-list-full p {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.example-list-full li > span {
  margin-top: 7px;
  display: block;
  color: var(--ink-soft);
  font-size: 12px;
}

.global-mini-program {
  position: fixed;
  z-index: 24;
  right: 18px;
  bottom: var(--mini-program-bottom, 18px);
  width: 250px;
  padding: 11px;
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  align-items: center;
  gap: 11px;
  border: 1px solid color-mix(in srgb, var(--blue) 42%, var(--line));
  border-radius: 18px;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  box-shadow: 0 18px 55px rgba(23, 41, 71, 0.2);
  backdrop-filter: blur(14px);
}

.global-mini-program img {
  width: 92px;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: #fff;
}

.global-qr-button {
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: transparent;
  cursor: pointer;
}

.global-mini-program div {
  min-width: 0;
}

.global-mini-program strong,
.global-mini-program span {
  display: block;
}

.global-mini-program strong {
  font-size: 14px;
  line-height: 1.35;
}

.global-mini-program span {
  margin-top: 3px;
  color: var(--ink-soft);
  font-size: 11px;
}

.global-mini-program button {
  margin-top: 8px;
  padding: 5px 9px;
  border: 1px solid var(--blue);
  border-radius: 8px;
  background: var(--paper);
  color: var(--blue-dark);
  cursor: pointer;
  font-size: 11px;
  font-weight: 800;
}

.grammar-entry-view .global-mini-program {
  display: none;
}

.miniprogram-dialog {
  width: min(760px, calc(100% - 32px));
  padding: 0;
  border: 0;
  border-radius: 22px;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 32px 100px rgba(9, 25, 51, 0.3);
}

.miniprogram-dialog::backdrop {
  background: rgba(9, 25, 51, 0.55);
  backdrop-filter: blur(5px);
}

.miniprogram-dialog form {
  position: relative;
  padding: 28px;
  display: grid;
  grid-template-columns: minmax(180px, 280px) minmax(0, 1fr);
  align-items: center;
  gap: 30px;
}

.miniprogram-dialog img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  background: #fff;
}

.miniprogram-dialog h2 {
  margin: 4px 0 13px;
  font-size: 26px;
}

.miniprogram-dialog p {
  margin: 0;
  color: var(--ink-soft);
}

.miniprogram-dialog strong {
  margin: 10px 0 5px;
  display: block;
  color: var(--blue-dark);
  font-family: var(--font-ja-sans);
  font-size: 24px;
}

.miniprogram-dialog .is-site-name,
.miniprogram-dialog .dialog-site-name {
  font-family: var(--font-zh-sans);
  font-weight: 800;
  letter-spacing: 0;
}

.miniprogram-dialog small {
  display: block;
  color: var(--ink-soft);
}

.feedback-dialog {
  width: min(560px, calc(100% - 32px));
  padding: 0;
  border: 0;
  border-radius: 22px;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 32px 100px rgba(9, 25, 51, 0.3);
}

.feedback-dialog::backdrop {
  background: rgba(9, 25, 51, 0.55);
  backdrop-filter: blur(5px);
}

.feedback-dialog form {
  position: relative;
  padding: 34px;
  display: grid;
  gap: 14px;
}

.feedback-dialog h2 {
  margin: -6px 0 0;
  font-family: var(--font-zh-serif);
  font-size: 27px;
}

.feedback-dialog-lead,
.feedback-dialog form > small {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.6;
}

.feedback-dialog label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.feedback-dialog input,
.feedback-dialog textarea {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: 0;
  background: var(--paper-blue);
  color: var(--ink);
  font: inherit;
  font-weight: 400;
  resize: vertical;
}

.feedback-dialog input:focus,
.feedback-dialog textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(64, 126, 234, 0.12);
}

.feedback-dialog input[readonly] {
  color: var(--blue-dark);
}

.feedback-status {
  min-height: 1.4em;
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.feedback-status.is-error {
  color: #bf534c;
}

.feedback-status.is-success {
  color: #2e8256;
}

.feedback-submit,
.feedback-entry-button {
  width: fit-content;
  padding: 10px 17px;
  border: 1px solid var(--blue);
  border-radius: 999px;
  background: var(--blue);
  color: #fff;
  cursor: pointer;
  font-weight: 800;
}

.feedback-submit:disabled {
  cursor: wait;
  opacity: 0.68;
}

.feedback-entry-button {
  margin-top: 18px;
  background: var(--paper);
  color: var(--blue-dark);
}

.feedback-entry-button:hover {
  background: var(--blue-pale);
}

.grammar-feedback-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(135deg, var(--cream), var(--paper));
}

.grammar-feedback-card h2 {
  margin: 3px 0 8px;
  font-family: var(--font-zh-serif);
  font-size: 20px;
}

.grammar-feedback-card p:not(.section-kicker) {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

.grammar-feedback-card .feedback-entry-button {
  margin-top: 13px;
}

.dialog-close {
  position: absolute;
  z-index: 1;
  top: 13px;
  right: 13px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  font-size: 24px;
  line-height: 1;
}

.article-grid-section {
  padding: 48px 0 80px;
}

.article-grid {
  column-count: 3;
  column-gap: 24px;
}

.article-card {
  overflow: hidden;
  break-inside: avoid;
  margin-bottom: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  transition: transform 160ms ease, box-shadow 160ms ease;
}

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

.article-card > a {
  display: block;
  color: var(--ink);
  text-decoration: none;
}

.article-card img,
.article-cover-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.article-cover-placeholder {
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(255, 216, 120, 0.4), transparent 60%),
    var(--blue-pale);
  color: var(--blue);
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 800;
}

.article-card-body {
  padding: 20px;
}

.article-meta,
.article-byline {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 11px;
  color: var(--ink-soft);
  font-size: 11px;
}

.article-meta span {
  color: var(--blue);
  font-weight: 800;
}

.article-card h2 {
  margin: 12px 0 7px;
  font-family: var(--serif);
  font-size: 21px;
  line-height: 1.45;
}

.article-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.article-card--text .article-card-body {
  padding: 28px 24px 25px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    radial-gradient(circle at 92% 14%, rgba(255, 216, 120, 0.33), transparent 8rem),
    linear-gradient(135deg, var(--paper-blue), var(--paper));
}

.article-card--text .article-card-body::before {
  width: 36px;
  height: 4px;
  margin-bottom: 18px;
  border-radius: 999px;
  background: var(--yellow);
  content: "";
}

.article-card--text .article-tags {
  padding-top: 16px;
}

.article-search {
  width: min(720px, 100%);
  margin-top: 24px;
  padding: 6px;
  display: flex;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: var(--paper);
  box-shadow: 0 9px 22px rgba(35, 75, 131, 0.05);
}

.article-search input {
  min-width: 0;
  flex: 1;
  padding: 11px 14px;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--ink);
  font: inherit;
}

.article-search button {
  padding: 0 18px;
  border: 0;
  border-radius: 10px;
  background: var(--blue);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
}

.article-tag-filter {
  width: min(860px, 100%);
  margin-top: 15px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

.article-tag-filter > span {
  margin-right: 2px;
  font-weight: 700;
}

.article-tag-filter a {
  padding: 5px 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink-soft);
  text-decoration: none;
  transition: background 150ms ease, border-color 150ms ease, color 150ms ease;
}

.article-tag-filter a:hover,
.article-tag-filter a.is-active {
  border-color: color-mix(in srgb, var(--blue) 32%, var(--line));
  background: var(--blue-pale);
  color: var(--blue);
}

.article-list-pagination {
  padding-bottom: 80px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 18px;
  color: var(--ink-soft);
  font-size: 13px;
  text-align: center;
}

.article-list-pagination a {
  width: max-content;
  padding: 10px 15px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
  color: var(--blue);
  text-decoration: none;
}

.article-list-pagination a:last-child {
  justify-self: end;
}

.pinned-mark {
  padding: 2px 7px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--yellow) 32%, var(--paper));
  color: #9d6513;
  font-size: 10px;
  line-height: 1.4;
}

.article-tags {
  margin-top: 15px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--blue);
  font-size: 11px;
}

.article-page {
  padding-bottom: 80px;
}

.article-header {
  padding-top: 65px;
  padding-bottom: 35px;
}

.article-page--no-cover .article-header {
  padding-bottom: 42px;
  border-bottom: 1px dashed var(--line);
  background:
    radial-gradient(circle at 90% 25%, rgba(255, 216, 120, 0.25), transparent 12rem),
    transparent;
}

.article-page--no-cover .article-body {
  padding-top: 34px;
}

.back-link {
  display: inline-block;
  margin-bottom: 40px;
  color: var(--blue);
  font-size: 13px;
  text-decoration: none;
}

.article-header h1 {
  margin: 7px 0 18px;
  font-family: var(--serif);
  font-size: clamp(38px, 6vw, 62px);
  line-height: 1.24;
}

.article-summary {
  color: var(--ink-soft);
  font-size: 18px;
}

.article-byline a {
  color: var(--blue);
  text-decoration: none;
}

.article-stat {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--blue-pale);
  color: var(--ink-soft);
}

.article-cover {
  width: min(920px, calc(100% - 48px));
  margin-bottom: 38px;
}

.article-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 518px;
  border-radius: 20px;
  object-fit: cover;
}

.article-body {
  padding-bottom: 30px;
}

.article-pagination {
  padding: 8px 0 34px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.article-pagination-link {
  min-height: 132px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper-blue);
  color: var(--ink);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.article-pagination-link:hover {
  transform: translateY(-2px);
  border-color: var(--blue);
  box-shadow: 0 12px 30px rgba(35, 75, 131, 0.1);
}

.article-pagination-link small,
.article-pagination-link time {
  color: var(--ink-soft);
  font-size: 11px;
}

.article-pagination-link strong {
  font-family: var(--font-zh-serif);
  font-size: 18px;
  line-height: 1.45;
}

.article-pagination-link.next {
  align-items: flex-end;
  text-align: right;
}

.prose {
  color: var(--ink);
  font-size: 16px;
  line-height: 1.95;
}

.prose h2,
.prose h3 {
  margin: 2.2em 0 0.75em;
  font-family: var(--serif);
  line-height: 1.45;
}

.prose h2 {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 27px;
}

.prose a {
  color: var(--blue);
}

.prose img {
  width: auto;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.6em auto;
  border-radius: 14px;
  box-shadow: 0 10px 26px rgba(29, 55, 91, 0.12);
}

.prose blockquote {
  padding: 16px 22px;
  margin: 28px 0;
  border-left: 4px solid var(--yellow);
  border-radius: 0 12px 12px 0;
  background: var(--cream);
  color: var(--ink-soft);
}

.prose code {
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--blue-pale);
}

.article-end {
  padding: 30px 0;
  border-top: 1px dashed var(--line);
  text-align: center;
}

.article-end p {
  color: var(--ink-soft);
}

.like-button {
  min-width: 130px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
}

.like-button span:first-child {
  margin-right: 5px;
  color: #ef7f86;
  font-size: 22px;
}

.like-button.liked {
  background: #fff0f1;
  color: #b85c62;
}

.like-count {
  margin-left: 8px;
}

.article-follow-card {
  max-width: 650px;
  padding: 22px;
  margin: 30px auto 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    radial-gradient(circle at 10% 95%, rgba(255, 216, 120, 0.25), transparent 10rem),
    var(--paper-blue);
  text-align: left;
}

.article-follow-copy .section-kicker {
  margin-bottom: 4px;
}

.article-follow-copy h2 {
  margin: 0;
  font-family: var(--font-zh-serif);
  font-size: 22px;
}

.article-follow-copy p:not(.section-kicker) {
  margin: 7px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.article-follow-codes {
  display: flex;
  gap: 12px;
}

.article-follow-codes figure {
  width: 118px;
  margin: 0;
  display: grid;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
}

.article-follow-codes img {
  width: 100%;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: #fff;
}

.about-content {
  padding: 50px 0 90px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  align-items: start;
  gap: 42px;
}

.about-copy {
  min-width: 0;
}

.about-copy > h2 {
  margin-top: 0;
}

.about-edit-note {
  color: var(--ink-soft);
  font-size: 12px;
}

.about-qr-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background:
    radial-gradient(circle at 94% 8%, rgba(255, 216, 120, 0.32), transparent 9rem),
    var(--paper-blue);
}

.about-qr-card h2 {
  margin: 2px 0 8px;
  font-family: var(--font-zh-serif);
  font-size: 23px;
}

.about-qr-card > div > p:not(.section-kicker) {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.about-qr-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.about-qr-grid figure {
  margin: 0;
  display: grid;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
}

.about-qr-grid img {
  width: 100%;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: #fff;
}

.empty-card {
  padding: 35px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--paper-blue);
  text-align: center;
}

.empty-card.wide {
  grid-column: 1 / -1;
}

.empty-card h2,
.empty-card h3 {
  margin: 0;
  font-family: var(--serif);
}

.empty-card p,
.empty-copy {
  color: var(--ink-soft);
}

.site-footer {
  width: var(--shell);
  padding: 34px 0 28px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr auto auto;
  align-items: end;
  gap: 45px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 12px;
}

.footer-mini-program button {
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: transparent;
  cursor: pointer;
}

.footer-mini-program img {
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
}

.footer-brand {
  color: var(--ink);
  font-size: 22px;
  font-weight: 850;
  text-decoration: none;
}

.site-footer p {
  margin: 4px 0 0;
}

.site-footer nav {
  display: flex;
  gap: 18px;
}

.site-footer nav a,
.footer-legal a {
  text-decoration: none;
}

.footer-legal {
  display: grid;
  gap: 4px;
  text-align: right;
}

@media (max-width: 1100px) {
  .brand small {
    display: none;
  }

  .site-nav {
    gap: 22px;
  }

  .home-content {
    grid-template-columns: minmax(0, 1fr) 310px;
    gap: 24px;
  }

  .level-directory-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .hero-copy {
    width: 58%;
  }

  .article-grid {
    column-count: 2;
  }
}

@media (max-width: 860px) {
  :root {
    --shell: min(100% - 32px, 720px);
    --narrow: min(100% - 32px, 720px);
  }

  .site-header {
    height: 66px;
  }

  .nav-shell {
    gap: 12px;
  }

  .brand-logo {
    width: 182px;
  }

  .brand-rice {
    width: 38px;
    height: 35px;
    border-width: 2px;
  }

  .brand-rice::before,
  .brand-rice::after {
    top: 16px;
  }

  .brand-rice i {
    width: 15px;
    height: 12px;
  }

  .nav-toggle {
    width: 42px;
    height: 42px;
    margin-left: auto;
    display: grid;
    place-content: center;
    gap: 5px;
  }

  .nav-toggle span {
    width: 22px;
    height: 2px;
    display: block;
    border-radius: 2px;
    background: var(--ink);
  }

  .site-nav {
    position: fixed;
    top: 66px;
    right: 0;
    bottom: 0;
    left: 0;
    min-height: calc(100dvh - 66px);
    padding: 26px 20px calc(24px + env(safe-area-inset-bottom));
    display: none;
    grid-template-columns: 1fr;
    align-content: start;
    gap: 10px;
    overflow-y: auto;
    border: 0;
    background: color-mix(in srgb, var(--paper) 97%, transparent);
    box-shadow: 0 18px 45px rgba(23, 41, 71, 0.16);
    backdrop-filter: blur(18px);
  }

  .site-nav.open {
    display: grid;
    animation: mobile-nav-enter 180ms ease both;
  }

  .mobile-nav-heading {
    padding: 0 4px 16px;
    margin-bottom: 4px;
    display: grid;
    gap: 2px;
    border-bottom: 1px dashed var(--line);
  }

  .mobile-nav-heading span {
    font-family: var(--font-zh-serif);
    color: var(--ink);
    font-size: 26px;
    font-weight: 800;
  }

  .mobile-nav-heading small {
    color: var(--ink-soft);
    font-size: 12px;
  }

  .site-nav a,
  .nav-about-menu > a,
  .nav-grammar-menu > a {
    min-height: 58px;
    padding: 0 18px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    border: 1px solid var(--line-soft);
    border-radius: 14px;
    background: var(--paper-blue);
    font-size: 17px;
  }

  .site-nav a::after {
    display: none;
  }

  .nav-about-menu,
  .nav-grammar-menu {
    display: contents;
  }

  .nav-grammar-menu {
    margin: 0;
    padding: 4px;
    display: grid;
    gap: 4px;
    border: 1px solid var(--line-soft);
    border-radius: 16px;
    background: var(--paper-blue);
  }

  .nav-grammar-menu > a {
    min-height: 52px;
    border: 0;
    background: transparent;
  }

  .nav-submenu-caret {
    margin-left: auto;
    transform: none !important;
  }

  .nav-grammar-flyout {
    position: static;
    width: auto;
    min-width: 0;
    padding: 0 4px 4px;
    display: grid;
    gap: 6px;
    transform: none;
    border: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    pointer-events: auto;
  }

  .nav-grammar-flyout .nav-grammar-flyout-card {
    min-height: 76px;
    margin: 0;
    padding: 10px 12px;
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) 18px;
    column-gap: 10px;
    border: 1px solid color-mix(in srgb, var(--line) 74%, var(--paper));
    border-left: 3px solid var(--blue);
    border-radius: 11px;
    background: color-mix(in srgb, var(--paper) 88%, var(--cream));
  }

  .nav-grammar-card-icon {
    width: 42px;
    height: 42px;
  }

  .nav-grammar-card-icon.is-search::before {
    width: 17px;
    height: 17px;
    border-width: 3px;
  }

  .nav-grammar-card-icon.is-search::after {
    right: 7px;
    bottom: 10px;
    width: 11px;
    height: 3px;
  }

  .nav-grammar-card-icon.is-category::before {
    width: 21px;
    height: 15px;
    border-width: 2px;
  }

  .nav-grammar-card-icon.is-category::after {
    top: 10px;
    left: 11px;
    width: 9px;
    height: 5px;
    border-width: 2px;
  }

  .nav-grammar-card-copy strong {
    font-size: 16px;
  }

  .nav-grammar-flyout .nav-grammar-card-copy small {
    font-size: 11px;
  }

  .nav-qr-flyout {
    display: none;
  }

  .mobile-nav-mini-program {
    margin-top: 8px;
    padding: 14px 17px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    border: 1px solid color-mix(in srgb, var(--blue) 45%, var(--line));
    border-radius: 14px;
    background: var(--cream);
    color: var(--ink);
    cursor: pointer;
    text-align: left;
  }

  .mobile-nav-mini-program span {
    font-weight: 800;
  }

  .mobile-nav-mini-program small {
    color: var(--blue);
    font-size: 12px;
    white-space: nowrap;
  }

  body.nav-open {
    overflow: hidden;
  }

  .theme-toggle {
    font-size: 24px;
  }

  .home-hero,
  .hero-shell {
    min-height: 700px;
  }

  .home-hero {
    background: var(--paper-blue);
  }

  .hero-copy {
    width: var(--shell);
    padding-top: 54px;
    margin-inline: auto;
  }

  .hero-art {
    top: 340px;
    right: 0;
    bottom: 0;
    left: 0;
    opacity: 0.95;
  }

  .hero-art::after {
    background: linear-gradient(180deg, var(--paper-blue) 0%, transparent 33%);
  }

  .hero-note {
    display: none;
  }

  .hero-search {
    background: var(--paper);
  }

  .home-content,
  .grammar-detail-layout,
  .grammar-learning-layout {
    grid-template-columns: 1fr;
  }

  .home-main,
  .home-recommendations,
  .home-sidebar {
    grid-column: auto;
    grid-row: auto;
  }

  .grammar-toc {
    position: static;
  }

  .grammar-connection-panel {
    position: static;
    order: -1;
  }

  .grammar-learning-main,
  .grammar-side-column {
    display: contents;
  }

  .understanding-card {
    order: 1;
  }

  .connection-card {
    order: 2;
    background: var(--cream);
  }

  .grammar-primary-block {
    order: 3;
  }

  .collocation-block {
    order: 4;
  }

  .examples-block {
    order: 5;
  }

  .additional-explanation-card {
    order: 6;
  }

  .practice-guide-card {
    order: 7;
  }

  .related-grammar-side {
    order: 8;
  }

  .grammar-feedback-card {
    order: 9;
  }

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

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

  .level-directory-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .home-sidebar .side-card:first-child {
    grid-column: 1 / -1;
  }

  .catalog-search {
    grid-template-columns: 1fr 1fr;
  }

  .catalog-search label {
    grid-column: 1 / -1;
  }

  .catalog-search button {
    min-height: 48px;
  }

  .site-footer {
    grid-template-columns: 1fr 1fr;
  }

  .footer-legal {
    grid-column: 1 / -1;
    text-align: left;
  }

  .global-mini-program {
    width: 216px;
    grid-template-columns: 72px minmax(0, 1fr);
  }

  .global-mini-program img {
    width: 72px;
    height: auto;
  }

  .about-content {
    grid-template-columns: 1fr;
  }

  .about-qr-card {
    max-width: 560px;
  }

  .article-follow-card {
    max-width: 720px;
  }
}

@keyframes mobile-nav-enter {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 560px) {
  .brand-logo {
    width: 190px;
  }

  .brand-lockup-light,
  .brand-lockup-dark {
    display: none;
  }

  [data-theme="dark"] .brand-lockup-dark {
    display: none;
  }

  .brand-lockup-mobile-light {
    display: block;
  }

  [data-theme="dark"] .brand-lockup-mobile-light {
    display: none;
  }

  [data-theme="dark"] .brand-lockup-mobile-dark {
    display: block;
  }

  .hero-copy h1 {
    font-size: 37px;
  }

  .hero-lead {
    font-size: 14px;
  }

  .hero-search {
    min-height: 58px;
    padding-left: 14px;
    gap: 8px;
  }

  .hero-search button {
    min-width: 76px;
  }

  .hot-searches {
    max-height: 72px;
    overflow: hidden;
  }

  .hero-art {
    top: 370px;
  }

  .home-content {
    padding-top: 24px;
  }

  .section-heading {
    align-items: center;
  }

  .grammar-card > a {
    padding: 16px;
    grid-template-columns: minmax(0, 1fr) 18px;
  }

  .grammar-card-icon {
    display: none;
  }

  .grammar-card-title h3 {
    width: 100%;
  }

  .grammar-card-copy > small {
    display: none;
  }

  .home-sidebar,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .article-grid {
    column-count: 1;
  }

  .home-recommendations {
    padding-top: 4px;
  }

  .level-directory-grid,
  .semantic-directory-grid {
    grid-template-columns: 1fr;
  }

  .level-directory-card {
    min-height: 112px;
  }

  .semantic-directory-card {
    min-height: 0;
  }

  .grammar-classification-page {
    padding-top: 30px;
  }

  .home-sidebar .side-card:first-child {
    grid-column: auto;
  }

  .about-card {
    grid-template-columns: 66px 1fr;
  }

  .avatar {
    width: 64px;
    height: 64px;
  }

  .avatar .brand-rice {
    transform: scale(0.8);
  }

  .catalog-search {
    grid-template-columns: 1fr;
  }

  .catalog-search label {
    grid-column: auto;
  }

  .grammar-detail-header h1 {
    word-break: break-word;
  }

  .grammar-detail-header h1 > span {
    font-size: 37px;
  }

  .grammar-summary {
    font-size: 16px;
  }

  .translation-box {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .grammar-detail-layout {
    padding-top: 30px;
  }

  .grammar-learning-layout {
    padding-top: 30px;
    gap: 22px;
  }

  .detail-block {
    padding: 22px 18px;
  }

  .understanding-card,
  .locked-learning-card,
  .related-grammar-block,
  .connection-card {
    padding: 22px 18px;
  }

  .search-preview-grid,
  .related-grammar-block nav,
  .connection-card .form-grid {
    grid-template-columns: 1fr;
  }

  .translation-card {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .understanding-translation {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .collocation-list-full {
    grid-template-columns: 1fr;
  }

  .mini-program-inline,
  .locked-collocation-card {
    align-items: stretch;
    flex-direction: column;
  }

  .mini-program-inline button,
  .locked-collocation-card button {
    width: 100%;
  }

  .miniprogram-dialog form {
    padding: 22px;
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .miniprogram-dialog img {
    width: min(230px, 74vw);
    margin-inline: auto;
  }

  .feedback-dialog form {
    padding: 28px 20px 22px;
  }

  .feedback-dialog h2 {
    font-size: 24px;
  }

  .global-mini-program {
    display: none;
  }

  .example-list li {
    padding-left: 48px;
  }

  .article-header {
    padding-top: 42px;
  }

  .article-header h1 {
    font-size: 38px;
  }

  .article-cover {
    width: 100%;
  }

  .article-cover img {
    border-radius: 0;
  }

  .article-pagination {
    grid-template-columns: 1fr;
    padding-bottom: 24px;
  }

  .article-pagination-link.next {
    align-items: flex-start;
    text-align: left;
  }

  .article-card--text .article-card-body {
    padding: 24px 20px;
  }

  .article-follow-card {
    padding: 20px 16px;
    grid-template-columns: 1fr;
    gap: 18px;
    text-align: left;
  }

  .article-follow-codes {
    justify-content: space-between;
  }

  .article-follow-codes figure {
    width: min(44vw, 148px);
  }

  .about-qr-card {
    padding: 20px 16px;
  }

  .site-footer {
    grid-template-columns: 112px minmax(0, 1fr);
    align-items: start;
    column-gap: 18px;
    row-gap: 18px;
  }

  .footer-intro {
    grid-column: 2;
  }

  .footer-mini-program {
    grid-column: 1;
    grid-row: 1 / span 3;
    align-self: center;
    margin: 0;
    display: grid;
    justify-items: center;
    gap: 4px;
    color: var(--ink-soft);
    font-size: 10px;
    text-align: center;
  }

  .footer-mini-program img {
    width: 108px;
    height: 108px;
    display: block;
  }

  .site-footer nav {
    grid-column: 2;
    flex-wrap: wrap;
    gap: 10px 16px;
  }

  .footer-legal {
    grid-column: 2;
  }
}