:root {
  color-scheme: light;
  --color-ink: #17202c;
  --color-muted: #657181;
  --color-subtle: #8a96a6;
  --color-line: #dfe6ee;
  --color-line-strong: #cfd9e5;
  --color-surface: #ffffff;
  --color-page: #f8fafc;
  --color-soft: #eef8f5;
  --color-green: #0b9b7a;
  --color-green-dark: #08725e;
  --color-blue: #1972df;
  --color-blue-dark: #1557b0;
  --color-violet: #7268d8;
  --color-orange: #f27b2f;
  --shadow-soft: 0 14px 36px rgb(31 45 61 / 10%);
  --shadow-card: 0 12px 28px rgb(31 45 61 / 8%);
  --radius: 8px;
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-ink);
  background: var(--color-surface);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
}

svg {
  display: block;
}

.container {
  width: min(100% - 32px, 1280px);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgb(223 230 238 / 80%);
  background: rgb(255 255 255 / 94%);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 6px 14px;
  padding: 12px 0;
}

.brand {
  display: inline-flex;
  min-width: max-content;
  align-items: center;
  gap: 9px;
  color: #132033;
  font-weight: 900;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--color-green), var(--color-blue));
  font-size: 12px;
  letter-spacing: 0;
  box-shadow: 0 8px 18px rgb(11 155 122 / 20%);
}

.brand-name {
  font-size: 18px;
  letter-spacing: 0;
}

.site-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: 100%;
  min-width: 0;
  flex: 0 0 100%;
  align-items: center;
  gap: 4px;
}

.nav-link,
.search-trigger {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #263548;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}

.nav-link {
  padding: 0 8px;
}

.search-trigger {
  width: 44px;
  padding: 0;
  cursor: pointer;
}

.search-trigger svg {
  width: 21px;
  height: 21px;
  stroke: currentColor;
  stroke-width: 2.2;
  fill: none;
}

.nav-link:hover,
.search-trigger:hover {
  color: var(--color-blue-dark);
  background: #eef5ff;
  transform: translateY(-1px);
}

.breadcrumb {
  border-bottom: 1px solid var(--color-line);
  background: #f8fafc;
  font-size: 14px;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 12px 0;
  list-style: none;
  color: var(--color-muted);
}

.breadcrumb li + li::before {
  margin-right: 8px;
  color: #97a1ad;
  content: "/";
}

.breadcrumb a {
  text-decoration: none;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  letter-spacing: 0;
}

.home-page {
  background: #ffffff;
}

.home-page .breadcrumb {
  display: none;
}

.home-hero {
  padding: 14px 0 10px;
}

.hero-panel {
  display: grid;
  gap: 22px;
  overflow: hidden;
  max-width: 100%;
  min-height: 0;
  padding: 28px 20px;
  border: 1px solid #d6e1ed;
  border-radius: 8px;
  background: linear-gradient(90deg, #ffffff 0%, #f3faff 48%, #eaf6ff 100%);
  box-shadow: 0 12px 34px rgb(20 39 65 / 8%);
}

.hero-panel > * {
  min-width: 0;
}

.home-hero-copy {
  min-width: 0;
}

.home-kicker {
  margin: 0 0 8px;
  color: #172033;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.35;
}

.home-hero h1 {
  max-width: 560px;
  margin: 0;
  font-size: clamp(36px, 9vw, 52px);
  line-height: 1.12;
  font-weight: 900;
  word-break: keep-all;
}

.home-hero h1 span {
  display: block;
}

.hero-title-main {
  color: var(--color-green);
}

.hero-title-sub {
  color: #111827;
}

.home-hero-description {
  max-width: 520px;
  margin: 18px 0 22px;
  color: #1f2937;
  font-size: 16px;
  line-height: 1.8;
  overflow-wrap: break-word;
  word-break: keep-all;
}

.home-hero-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  min-width: 0;
}

.hero-button {
  display: inline-flex;
  width: 100%;
  min-width: 0;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-sizing: border-box;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: #ffffff;
  font-size: 16px;
  font-weight: 900;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.hero-button:hover {
  transform: translateY(-2px);
}

.hero-button-primary {
  background: #0b9b58;
  box-shadow: 0 12px 24px rgb(11 155 88 / 22%);
}

.hero-button-secondary {
  background: #1265d8;
  box-shadow: 0 12px 24px rgb(18 101 216 / 22%);
}

.button-pin {
  width: 16px;
  height: 16px;
  border-radius: 999px 999px 999px 0;
  background: #ffffff;
  transform: rotate(-45deg);
}

.button-arrow {
  margin-left: auto;
  font-size: 28px;
  line-height: 1;
}

.home-hero-visual {
  margin: 0;
  min-width: 0;
  overflow: hidden;
}

.home-hero-visual img {
  display: block;
  width: min(116%, 520px);
  max-width: none;
  max-height: 360px;
  height: auto;
  margin: 0 auto;
  object-fit: contain;
  transform: translateX(-4%);
}

.home-section {
  padding: 18px 0;
}

.center-heading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 14px;
  color: #101827;
  text-align: center;
}

.center-heading h2 {
  margin: 0;
  font-size: 25px;
  line-height: 1.2;
  font-weight: 900;
}

.heading-icon {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--color-green);
}

.heading-icon svg {
  width: 32px;
  height: 32px;
  stroke: currentColor;
  stroke-width: 1.9;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.heading-icon.pin {
  color: var(--color-green);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 1060px;
  margin: 0 auto;
}

.category-card {
  position: relative;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) 16px;
  gap: 12px;
  align-items: center;
  min-height: 92px;
  padding: 14px 12px;
  border: 1px solid #dfe6ee;
  border-radius: 8px;
  background: #ffffff;
  color: #172033;
  text-decoration: none;
  box-shadow: 0 8px 20px rgb(23 32 44 / 5%);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.category-card:hover {
  border-color: #bad0e8;
  box-shadow: 0 18px 34px rgb(23 32 44 / 13%);
  transform: translateY(-4px) scale(1.012);
}

.category-card-icon {
  grid-row: 1 / 3;
  display: inline-grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border-radius: 8px;
  color: transparent;
  font-size: 0;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 72%), 0 8px 18px rgb(15 23 42 / 6%);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.category-card:hover .category-card-icon {
  transform: scale(1.08);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 82%), 0 12px 24px rgb(15 23 42 / 10%);
}

.category-card-icon::before {
  width: 41px;
  height: 41px;
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
  content: "";
}

.category-card-icon.math {
  background: #edf4ff;
}

.category-card-icon.english {
  background: #f3f1ff;
}

.category-card-icon.elementary,
.category-card-icon.middle,
.category-card-icon.high {
  background: #eefaf5;
}

.category-card-icon.strategy {
  background: #fff2e9;
}

.category-card:nth-child(1) .category-card-icon::before {
  background-image: url("../images/category-icons/math.svg");
}

.category-card:nth-child(2) .category-card-icon::before {
  background-image: url("../images/category-icons/english.svg");
}

.category-card:nth-child(3) .category-card-icon::before {
  background-image: url("../images/category-icons/elementary.svg");
}

.category-card:nth-child(4) .category-card-icon::before {
  background-image: url("../images/category-icons/middle.svg");
}

.category-card:nth-child(5) .category-card-icon::before {
  background-image: url("../images/category-icons/high.svg");
}

.category-card:nth-child(6) .category-card-icon::before {
  background-image: url("../images/category-icons/elementary-math.svg");
}

.category-card:nth-child(7) .category-card-icon::before {
  background-image: url("../images/category-icons/middle-math.svg");
}

.category-card:nth-child(8) .category-card-icon::before {
  background-image: url("../images/category-icons/high-math.svg");
}

.category-card:nth-child(9) .category-card-icon::before {
  background-image: url("../images/category-icons/elementary-english.svg");
}

.category-card:nth-child(10) .category-card-icon::before {
  background-image: url("../images/category-icons/middle-english.svg");
}

.category-card:nth-child(11) .category-card-icon::before {
  background-image: url("../images/category-icons/high-english.svg");
}

.category-card:nth-child(12) .category-card-icon::before {
  background-image: url("../images/category-icons/strategy.svg");
}

.category-card:nth-child(6) .category-card-icon,
.category-card:nth-child(7) .category-card-icon,
.category-card:nth-child(8) .category-card-icon {
  background: #edf4ff;
}

.category-card:nth-child(9) .category-card-icon,
.category-card:nth-child(10) .category-card-icon,
.category-card:nth-child(11) .category-card-icon {
  background: #f3f1ff;
}

.category-card strong {
  grid-column: 2;
  grid-row: 1;
  display: block;
  font-size: 15px;
  line-height: 1.25;
}

.category-card span:nth-child(3) {
  grid-column: 2;
  grid-row: 2;
  display: block;
  margin-top: 3px;
  color: #344054;
  font-size: 12px;
  line-height: 1.45;
}

.category-arrow {
  grid-column: 3;
  grid-row: 1 / 3;
  align-self: center;
  justify-self: end;
  color: #111827;
  font-size: 26px;
  line-height: 1;
}

.home-seo-band {
  padding: 8px 0 10px;
}

.seo-band-inner {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid #e4eaf1;
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff, #f8fafc);
}

.seo-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #111827;
}

.seo-heading svg {
  flex: 0 0 auto;
}

.seo-heading h2 {
  margin: 0;
  font-size: 19px;
  line-height: 1.25;
  font-weight: 900;
  letter-spacing: 0;
}

.seo-band-inner p {
  margin: 0;
  color: #344054;
  font-size: 14px;
  line-height: 1.85;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.seo-band-inner strong {
  color: #101827;
  font-weight: 800;
}

.seo-band-title {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px 12px;
  align-items: center;
}

.seo-doc {
  display: inline-grid;
  width: 44px;
  height: 44px;
  border: 2px solid #344054;
  border-radius: 6px;
}

.seo-band-title strong {
  display: block;
  font-size: 16px;
}

.seo-band-title span:last-child {
  grid-column: 2;
  color: #475467;
  font-size: 13px;
}

.seo-placeholder {
  display: grid;
  min-height: 48px;
  place-items: center;
  border: 1px dashed #cfd7e2;
  border-radius: 8px;
  color: #8a96a6;
  font-size: 13px;
}

.home-region-section {
  padding-top: 6px;
  padding-bottom: 16px;
}

.region-card-grid {
  display: grid;
  gap: 12px;
  max-width: 1060px;
  margin: 0 auto;
}

.region-card {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  min-height: 86px;
  padding: 14px;
  border: 1px solid #cfe3d8;
  border-radius: 8px;
  background: #fbfffd;
}

.region-daegu {
  border-color: #c8dcfb;
  background: #fbfdff;
}

.region-pin {
  display: inline-grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 999px;
  color: #ffffff;
  background: var(--color-green);
}

.region-daegu .region-pin {
  background: var(--color-blue);
}

.region-pin svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
}

.region-content h3 {
  margin: 0 0 10px;
  color: #172033;
  font-size: 20px;
  line-height: 1;
  font-weight: 900;
}

.district-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.district-grid a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid #bfe1d3;
  border-radius: 8px;
  background: #ffffff;
  color: var(--color-green-dark);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.region-daegu .district-grid a {
  border-color: #bfd5fb;
  color: var(--color-blue-dark);
}

.district-grid a:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgb(23 32 44 / 8%);
}

.region-more {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  margin-top: 8px;
  color: currentColor;
  font-size: 13px;
  font-weight: 900;
  text-decoration: none;
}

.region-more::after {
  margin-left: 8px;
  content: ">";
  font-size: 24px;
}

.site-footer {
  border-top: 1px solid var(--color-line);
  background: linear-gradient(180deg, #ffffff, #f8fafc);
}

.footer-inner {
  display: grid;
  gap: 16px;
  padding: 24px 0 30px;
  color: var(--color-muted);
  font-size: 13px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-mark {
  width: 30px;
  height: 30px;
  font-size: 11px;
}

.footer-copy {
  margin: 0;
}

.footer-brand strong {
  display: block;
  margin-bottom: 6px;
  color: #162033;
  font-size: 17px;
}

.footer-brand p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.footer-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: #596579;
  text-decoration: none;
}

.article-page {
  padding-top: 34px;
  padding-bottom: 54px;
}

.article-layout {
  display: grid;
  gap: 26px;
  align-items: start;
  max-width: 860px;
}

.article-header h1 {
  margin: 0;
  color: #101827;
  font-size: clamp(30px, 8vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
  word-break: keep-all;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--color-green-dark);
  font-size: 13px;
  font-weight: 900;
}

.body-common-image {
  margin: 0;
  overflow: visible;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 16px 38px rgb(16 24 40 / 8%);
}

.body-common-image img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 8px;
  object-fit: contain;
  object-position: center top;
}

.article-body {
  width: 100%;
  min-width: 0;
  max-width: min(100%, 820px);
  padding: 34px 0 0;
  border-top: 1px solid #e7edf4;
  color: var(--color-ink);
  font-size: 16.5px;
  line-height: 1.92;
  letter-spacing: 0;
  overflow-x: hidden;
}

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

.article-body p {
  max-width: 100%;
  margin: 0 0 1.45em;
  white-space: normal;
  word-break: normal;
  overflow-wrap: anywhere;
}

.article-body > p:first-of-type,
.article-body h2 + p,
.article-body h3 + p,
.article-body .info-card,
.article-body .key-point,
.article-body .highlight-box {
  position: relative;
  padding: 20px 22px;
  border: 1px solid #dce8f2;
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff, #f8fbfd);
  box-shadow: 0 12px 28px rgb(16 24 40 / 6%);
}

.article-body > p:first-of-type::before,
.article-body h2 + p::before,
.article-body h3 + p::before,
.article-body .info-card::before,
.article-body .key-point::before,
.article-body .highlight-box::before {
  position: absolute;
  top: 18px;
  left: 0;
  width: 4px;
  height: calc(100% - 36px);
  border-radius: 999px;
  background: linear-gradient(180deg, var(--color-green), var(--color-blue));
  content: "";
}

.article-body .tip,
.article-body .tip-box {
  position: relative;
  margin: 1.55em 0;
  padding: 18px 20px 18px 54px;
  border: 1px solid #cce8dd;
  border-radius: 8px;
  background: #f3fbf7;
  box-shadow: 0 10px 24px rgb(8 114 94 / 7%);
}

.article-body .tip::before,
.article-body .tip-box::before {
  position: absolute;
  top: 18px;
  left: 18px;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 999px;
  color: #ffffff;
  background: var(--color-green);
  font-size: 14px;
  font-weight: 900;
  content: "i";
}

.article-body h2 {
  position: relative;
  margin: 2.55em 0 1em;
  padding-top: 18px;
  color: #101827;
  font-size: clamp(25px, 4.8vw, 31px);
  line-height: 1.3;
  font-weight: 900;
  letter-spacing: 0;
}

.article-body h2::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 46px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-green), var(--color-blue));
  content: "";
}

.article-body h3 {
  margin: 2em 0 0.8em;
  padding: 3px 0 3px 13px;
  border-left: 4px solid var(--color-green);
  color: #172033;
  font-size: clamp(20px, 4vw, 23px);
  line-height: 1.38;
  font-weight: 900;
  letter-spacing: 0;
}

.article-body ul,
.article-body ol {
  display: grid;
  gap: 10px;
  margin: 1.2em 0 1.6em;
  padding: 18px 20px;
  border: 1px solid #dfe8f2;
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff, #f8fbfd);
  box-shadow: 0 10px 24px rgb(16 24 40 / 5%);
}

.article-body li {
  position: relative;
  margin: 0;
  padding-left: 30px;
  line-height: 1.75;
}

.article-body ul {
  list-style: none;
}

.article-body ul li::before {
  position: absolute;
  top: 0.45em;
  left: 0;
  display: grid;
  width: 18px;
  height: 18px;
  place-items: center;
  border-radius: 999px;
  color: #ffffff;
  background: var(--color-green);
  font-size: 12px;
  font-weight: 900;
  line-height: 1;
  content: "✓";
}

.article-body ol {
  list-style: none;
  counter-reset: article-step;
}

.article-body ol li {
  counter-increment: article-step;
}

.article-body ol li::before {
  position: absolute;
  top: 0.2em;
  left: 0;
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 999px;
  color: #ffffff;
  background: var(--color-blue);
  font-size: 12px;
  font-weight: 900;
  line-height: 1;
  content: counter(article-step);
}

.article-body .checklist {
  border-color: #cce8dd;
  background: linear-gradient(180deg, #f7fffb, #ffffff);
}

.article-body blockquote {
  margin: 1.8em 0;
  padding: 20px 22px;
  border-left: 4px solid var(--color-green);
  border-radius: 8px;
  background: linear-gradient(180deg, #f3fbf7, #ffffff);
  color: #253044;
  box-shadow: 0 10px 24px rgb(16 24 40 / 6%);
}

.article-body blockquote::before {
  display: block;
  width: 30px;
  height: 4px;
  margin-bottom: 12px;
  border-radius: 999px;
  background: var(--color-green);
  content: "";
}

.article-body blockquote p:last-child {
  margin-bottom: 0;
}

.article-body table {
  width: 100%;
  margin: 1.8em 0;
  border-collapse: collapse;
  table-layout: fixed;
  overflow-wrap: break-word;
  border: 1px solid #d8e2ee;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 10px 22px rgb(16 24 40 / 5%);
}

.article-body th,
.article-body td {
  padding: 13px 12px;
  border: 1px solid #dfe6ee;
  line-height: 1.55;
  vertical-align: top;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.article-body th {
  background: #f4faf7;
  color: #111827;
  font-weight: 800;
}

.article-body details,
.article-body .faq,
.article-body .faq-item {
  margin: 1.45em 0;
  padding: 18px 20px;
  border: 1px solid #dfe8f2;
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff, #fbfdff);
  box-shadow: 0 10px 24px rgb(16 24 40 / 6%);
}

.article-body summary {
  cursor: pointer;
  color: #101827;
  font-weight: 900;
  line-height: 1.55;
}

.article-body strong {
  color: var(--color-green-dark);
  font-weight: 900;
}

.article-body em {
  color: #1557b0;
  font-style: normal;
  font-weight: 800;
  background: linear-gradient(180deg, transparent 58%, #eaf3ff 0);
}

.article-body img,
.article-body iframe,
.article-body video {
  max-width: 100%;
}

.content-section,
.related-section {
  padding: 34px 0 0;
}

.related-section {
  border-top: 1px solid #e4eaf1;
}

.related-section h2 {
  margin: 0 0 16px;
  color: #101827;
  font-size: 22px;
  line-height: 1.35;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.link-grid a {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 13px 15px;
  border: 1px solid #d7e3ef;
  border-radius: 8px;
  background: linear-gradient(180deg, #ffffff, #f9fbfd);
  color: var(--color-ink);
  font-weight: 800;
  text-align: center;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease, color 160ms ease;
}

.link-grid a:hover {
  border-color: var(--color-green);
  color: var(--color-green-dark);
  box-shadow: 0 12px 26px rgb(16 24 40 / 10%);
  transform: translateY(-2px);
}

.hub-grid {
  display: grid;
  gap: 14px;
}

.hub-card {
  padding: 18px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: #ffffff;
}

.hub-card h2 {
  margin: 0 0 12px;
  font-size: 20px;
}

.hub-card ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hub-card a {
  color: var(--color-green-dark);
  font-weight: 800;
  text-decoration: none;
}

@media (max-width: 767px) {
  .article-page {
    padding-top: 28px;
    padding-bottom: 44px;
  }

  .article-layout {
    gap: 22px;
  }

  .article-body {
    padding-top: 28px;
    font-size: 16px;
    line-height: 1.86;
  }

  .article-body p {
    margin-bottom: 1.38em;
  }

  .article-body > p:first-of-type,
  .article-body h2 + p,
  .article-body h3 + p,
  .article-body .info-card,
  .article-body .key-point,
  .article-body .highlight-box {
    padding: 17px 16px 17px 18px;
  }

  .article-body .tip,
  .article-body .tip-box {
    padding: 16px 16px 16px 48px;
  }

  .article-body .tip::before,
  .article-body .tip-box::before {
    top: 17px;
    left: 16px;
  }

  .article-body h2 {
    margin-top: 2.25em;
    margin-bottom: 0.85em;
    font-size: 24px;
  }

  .article-body h3 {
    margin-top: 1.85em;
    font-size: 20px;
  }

  .article-body ul,
  .article-body ol {
    gap: 9px;
    padding: 15px 14px;
  }

  .article-body li {
    padding-left: 28px;
  }

  .article-body blockquote,
  .article-body details,
  .article-body .faq,
  .article-body .faq-item {
    padding: 16px;
  }

  .article-body table {
    font-size: 13.5px;
  }

  .article-body th,
  .article-body td {
    padding: 9px 7px;
    line-height: 1.48;
  }

  .related-section {
    padding-top: 30px;
  }

  .related-section h2 {
    font-size: 20px;
  }

  .link-grid {
    gap: 9px;
  }

  .link-grid a {
    min-height: 50px;
    padding: 11px 10px;
    font-size: 14px;
    line-height: 1.35;
  }
}

@media (max-width: 380px) {
  .container {
    width: min(100% - 24px, 1280px);
  }

  .brand-name {
    font-size: 16px;
  }

  .nav-link {
    padding: 0 5px;
    font-size: 13px;
  }

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

  .region-illustration {
    max-width: 130px;
  }
}

@media (min-width: 768px) {
  .container {
    width: min(100% - 48px, 1280px);
  }

  .header-inner {
    flex-wrap: nowrap;
    min-height: 72px;
    padding: 0;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand-name {
    font-size: 20px;
  }

  .site-nav {
    display: flex;
    width: auto;
    flex: 0 1 auto;
    justify-content: flex-end;
    gap: 8px;
  }

  .nav-link {
    padding: 0 14px;
    font-size: 15px;
  }

  .home-hero {
    padding: 18px 0 12px;
  }

  .hero-panel {
    padding: 34px 42px;
  }

  .home-hero-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 470px;
  }

  .hero-button {
    padding: 0 22px;
  }

  .home-hero-visual {
    min-height: 260px;
    background-image: url("../images/home-hero-books-skyline-crop.png");
    background-position: center bottom;
    background-repeat: no-repeat;
    background-size: min(620px, 100%) auto;
  }

  .home-hero-visual img {
    width: min(100%, 620px);
    max-width: 100%;
    transform: none;
  }

  .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .region-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .region-card {
    grid-template-columns: 42px minmax(0, 1fr);
    min-height: 98px;
    padding: 16px 18px;
  }

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

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

  .footer-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

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

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

@media (min-width: 1024px) {
  .home-hero {
    padding: 18px 0 12px;
  }

  .hero-panel {
    grid-template-columns: minmax(460px, 0.9fr) minmax(0, 1fr);
    min-height: 286px;
    padding: 40px 64px 34px;
    align-items: center;
  }

  .home-hero-visual {
    aspect-ratio: 760 / 360;
    min-height: 0;
    background-image: none;
  }

  .home-hero-visual img {
    width: 100%;
    max-width: 100%;
    height: 100%;
    transform: none;
  }

  .home-hero h1 {
    font-size: 44px;
  }

  .home-hero-description {
    font-size: 17px;
  }

  .home-section {
    padding: 42px 0;
  }

  .section-heading h2 {
    font-size: 25px;
  }

  .category-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .category-card {
    min-height: 76px;
    padding: 12px 16px;
  }

  .category-card strong {
    font-size: 16px;
  }

  .home-seo-space {
    padding: 12px 0 26px;
  }

  .seo-placeholder {
    min-height: 96px;
  }

  .region-card-grid {
    gap: 20px;
  }

  .region-content h3 {
    font-size: 20px;
  }

  .feature-strip-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    border-top: 1px solid var(--color-line);
  }

  .feature-strip-grid article {
    border: 0;
    border-right: 1px solid var(--color-line);
    border-radius: 0;
  }

  .feature-strip-grid article:last-child {
    border-right: 0;
  }

  .article-header h1 {
    font-size: 42px;
  }

  .article-body {
    font-size: 17px;
  }

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

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