:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #667085;
  --line: #e5e9ef;
  --paper: #fffdf8;
  --soft: #f5f8f3;
  --green: #0f766e;
  --green-2: #22a06b;
  --navy: #091829;
  --gold: #ffd56b;
  --cyan: #5de6f4;
  --rose: #ff87b5;
  --shadow: 0 20px 54px rgba(25, 37, 55, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #ffffff;
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid rgba(23, 32, 51, 0.08);
  background: rgba(255, 255, 255, 0.93);
  box-shadow: 0 10px 28px rgba(23, 32, 51, 0.07);
  backdrop-filter: blur(16px);
}

.brand,
.nav,
.hero-actions,
.promise-strip,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 900;
}

.brand-logo {
  width: 196px;
  height: 54px;
  object-fit: contain;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  color: #153021;
  background: linear-gradient(135deg, var(--gold), #a4f5c8);
  box-shadow: 0 0 24px rgba(47, 191, 145, 0.34);
}

.nav {
  gap: 24px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 900;
}

.nav a:hover,
.article-body a {
  color: var(--green);
}

.header-cta {
  padding: 9px 14px;
  border: 1px solid var(--green);
  border-radius: 8px;
  color: #ffffff;
  background: var(--green);
  font-weight: 900;
}

.hero {
  position: relative;
  min-height: calc(100vh - 69px);
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.85fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(58px, 8vw, 104px) clamp(18px, 5vw, 64px) clamp(82px, 9vw, 118px);
  color: var(--ink);
  overflow: hidden;
  background:
    linear-gradient(120deg, rgba(255, 253, 248, 0.94) 0%, rgba(245, 251, 248, 0.92) 52%, rgba(238, 248, 255, 0.88) 100%),
    url("assets/route-planning-board.png") right center / 50% auto no-repeat;
}

.hero.compact {
  min-height: 430px;
}

.hero::after {
  content: "";
  position: absolute;
  right: -12vw;
  bottom: -20vw;
  width: 48vw;
  height: 48vw;
  border-radius: 999px;
  background: rgba(253, 230, 138, 0.24);
  pointer-events: none;
}

.light-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  opacity: 0.22;
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

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

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  color: #10233f;
  font-size: clamp(40px, 6.5vw, 78px);
  line-height: 1.04;
}

h1 span {
  display: block;
}

.accent-line {
  color: var(--green);
}

h2 {
  color: #17385f;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.18;
}

h3 {
  color: #183454;
  font-size: 20px;
  line-height: 1.35;
}

.lead {
  max-width: 700px;
  margin-bottom: 28px;
  color: #41516b;
  font-size: 18px;
}

.lead strong,
.consult-band strong,
.route-visual-copy strong {
  color: #12684f;
  font-weight: 900;
}

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

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 24px;
}

.hero-badges span {
  padding: 7px 10px;
  border: 1px solid #badccc;
  border-radius: 999px;
  color: #12684f;
  background: #ffffff;
  font-size: 13px;
  font-weight: 900;
}

.hero-badges span:nth-child(2) {
  color: #245ba8;
  border-color: #c9daf6;
  background: #f2f7ff;
}

.hero-badges span:nth-child(3) {
  color: #9a4968;
  border-color: #f4c9d8;
  background: #fff3f7;
}

.hero-visual {
  position: relative;
  z-index: 2;
}

.hero-visual img {
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 19px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 900;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

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

.button.primary {
  color: #102115;
  border-color: transparent;
  background: linear-gradient(135deg, var(--gold), var(--cyan));
  box-shadow: 0 0 34px rgba(93, 230, 244, 0.3);
}

.button.secondary {
  color: var(--green);
  border-color: #badccc;
  background: #ffffff;
}

.button.outline,
.contact-form .button.secondary {
  color: var(--green);
  border-color: #badccc;
  background: #f0fbf6;
}

.promise-strip {
  position: relative;
  z-index: 3;
  justify-content: center;
  width: min(1120px, calc(100% - 36px));
  margin: -42px auto 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.promise-strip div {
  flex: 1;
  display: grid;
  gap: 4px;
  padding: 20px 24px;
  border-right: 1px solid var(--line);
}

.promise-strip div:last-child {
  border-right: 0;
}

.promise-strip strong {
  color: #17385f;
  font-size: 19px;
}

.promise-strip span,
.service-grid p,
.method-cards p,
.subject-board p,
.program-section p,
.course p,
.photo-feature p,
.research-note p,
.post-card span,
.article-body p,
.article-body li,
.contact-copy p {
  color: var(--muted);
}

.message-strip {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 0.6fr) minmax(0, 1fr);
  align-items: center;
  gap: 24px;
  width: min(1120px, calc(100% - 36px));
  margin: -44px auto 0;
  padding: 24px 28px;
  border: 1px solid rgba(22, 131, 95, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.message-strip span {
  display: block;
  color: #b34870;
  font-size: 14px;
  font-weight: 900;
}

.message-strip strong {
  display: block;
  color: #17385f;
  font-size: clamp(22px, 2.5vw, 30px);
  line-height: 1.22;
}

.message-strip p {
  margin: 0;
  color: #41516b;
  font-weight: 700;
}

.service-grid article:nth-child(1) {
  border-top: 5px solid var(--green);
}

.service-grid article:nth-child(2) {
  border-top: 5px solid var(--cyan);
}

.service-grid article:nth-child(3) {
  border-top: 5px solid var(--gold);
}

.service-grid article:nth-child(4) {
  border-top: 5px solid var(--rose);
}

.service-grid article:nth-child(1) h3,
.service-grid article:nth-child(1) span {
  color: var(--green);
}

.service-grid article:nth-child(2) h3,
.service-grid article:nth-child(2) span {
  color: #2372b9;
}

.service-grid article:nth-child(3) h3,
.service-grid article:nth-child(3) span {
  color: #9a6b00;
}

.service-grid article:nth-child(4) h3,
.service-grid article:nth-child(4) span {
  color: #b34870;
}

.consult-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  width: min(1120px, calc(100% - 36px));
  margin: 34px auto 0;
  padding: 26px;
  border: 1px solid #bfe7d7;
  border-radius: 8px;
  background: #f1fff9;
}

.consult-band h2 {
  margin-bottom: 6px;
  font-size: clamp(24px, 3.2vw, 34px);
}

.consult-band p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.visual-story {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  width: min(1180px, calc(100% - 36px));
  margin: 34px auto 0;
}

.visual-story-card {
  position: relative;
  min-height: 430px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #10233f;
  transform: translateY(0);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.visual-story-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 26px 60px rgba(25, 37, 55, 0.18);
}

.visual-story-card img {
  width: 100%;
  height: 100%;
  min-height: 430px;
  object-fit: cover;
  opacity: 0.9;
}

.visual-story-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 24, 41, 0.06), rgba(9, 24, 41, 0.82));
}

.visual-story-card.accent::after {
  background: linear-gradient(180deg, rgba(22, 131, 95, 0.04), rgba(13, 67, 80, 0.84));
}

.visual-story-card div {
  position: absolute;
  inset: auto 0 0;
  z-index: 1;
  padding: 24px;
  color: #ffffff;
}

.visual-story-card span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 12px;
  border-radius: 999px;
  color: #102115;
  background: var(--gold);
  font-weight: 900;
}

.visual-story-card h2 {
  margin-bottom: 10px;
  color: #ffffff;
  font-size: clamp(24px, 2.7vw, 34px);
}

.visual-story-card p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.84);
}

.subject-board {
  padding: 70px clamp(18px, 5vw, 64px);
  background:
    radial-gradient(circle at 8% 18%, rgba(255, 135, 181, 0.16), transparent 22%),
    radial-gradient(circle at 92% 18%, rgba(93, 230, 244, 0.18), transparent 22%),
    #ffffff;
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.subject-card {
  min-height: 220px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 16px 34px rgba(25, 37, 55, 0.08);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.subject-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 24px 48px rgba(25, 37, 55, 0.14);
}

.subject-card span {
  display: inline-block;
  margin-bottom: 18px;
  padding: 6px 10px;
  border-radius: 999px;
  color: #102115;
  font-size: 13px;
  font-weight: 900;
}

.subject-card h3 {
  margin-bottom: 10px;
}

.subject-card.japanese span {
  background: #ffe8f1;
}

.subject-card.english span {
  background: #e7f4ff;
}

.subject-card.math span {
  background: #eaf9f2;
}

.subject-card.science span {
  background: #fff3ce;
}

.subject-card.social span {
  background: #ece9ff;
}

.method-section {
  background: #fbfdf9;
}

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

.method-cards article {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 16px 34px rgba(25, 37, 55, 0.08);
}

.method-cards article:nth-child(1) {
  background: linear-gradient(180deg, #f0fbf6, #ffffff);
}

.method-cards article:nth-child(2) {
  background: linear-gradient(180deg, #f1f8ff, #ffffff);
}

.method-cards article:nth-child(3) {
  background: linear-gradient(180deg, #fff8dd, #ffffff);
}

.method-cards article:nth-child(4) {
  background: linear-gradient(180deg, #fff2f7, #ffffff);
}

.method-cards strong {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--green);
  font-size: 13px;
}

.route-visual-section {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(360px, 1.12fr);
  gap: 34px;
  align-items: center;
  background:
    radial-gradient(circle at 12% 12%, rgba(255, 213, 107, 0.28), transparent 28%),
    radial-gradient(circle at 88% 20%, rgba(93, 230, 244, 0.2), transparent 24%),
    #ffffff;
}

.route-visual-copy p {
  color: var(--muted);
}

.mini-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.mini-stats span {
  display: grid;
  gap: 2px;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.mini-stats strong {
  color: var(--green);
  font-size: 24px;
  line-height: 1;
}

.route-visual-frame {
  position: relative;
  padding: 12px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--gold), var(--cyan), var(--rose));
  box-shadow: var(--shadow);
  animation: floatPanel 5s ease-in-out infinite;
}

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 620ms ease, transform 620ms ease;
}

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

.route-visual-frame::after {
  content: "";
  position: absolute;
  inset: 18px -12px -12px 42px;
  z-index: -1;
  border-radius: 8px;
  background: rgba(22, 131, 95, 0.12);
}

.route-visual-frame img {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 6px;
  object-fit: cover;
}

.program-section {
  background: #ffffff;
}

.program-section {
  scroll-margin-top: 92px;
}

.program-section .section-heading {
  max-width: 1040px;
}

.program-section .section-heading h2 {
  font-size: clamp(30px, 3.3vw, 42px);
  text-wrap: balance;
}

.program-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 22px;
  align-items: stretch;
}

.program-main,
.program-list article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 16px 34px rgba(25, 37, 55, 0.08);
}

.program-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.82fr);
  gap: 24px;
  padding: 28px;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 0%, rgba(255, 213, 107, 0.22), transparent 30%),
    linear-gradient(135deg, #ffffff, #f1fff9);
}

.program-main span,
.program-list span {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
}

.program-main h3 {
  font-size: clamp(28px, 3.5vw, 42px);
}

.program-main img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  border-radius: 8px;
  object-fit: cover;
}

.program-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.program-list article {
  padding: 22px;
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.program-list article:hover {
  transform: translateY(-5px);
  box-shadow: 0 24px 48px rgba(25, 37, 55, 0.14);
}

.program-list article:nth-child(1) {
  border-top: 5px solid var(--cyan);
}

.program-list article:nth-child(2) {
  border-top: 5px solid var(--gold);
}

.program-list article:nth-child(3) {
  border-top: 5px solid var(--rose);
}

.program-list article:nth-child(4) {
  border-top: 5px solid var(--green);
}

.image-marquee {
  padding: 72px 0 32px;
  overflow: hidden;
  background: linear-gradient(180deg, #ffffff, var(--soft));
}

.marquee-track {
  display: flex;
  gap: 18px;
  width: max-content;
  animation: imageSlide 36s linear infinite;
}

.marquee-card {
  position: relative;
  width: min(42vw, 520px);
  height: 292px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: var(--navy);
}

.marquee-card img {
  width: min(42vw, 520px);
  height: 292px;
  object-fit: cover;
}

.marquee-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 34%, rgba(9, 24, 41, 0.88));
}

.marquee-card div {
  position: absolute;
  right: 20px;
  bottom: 18px;
  left: 20px;
  z-index: 1;
  color: #ffffff;
}

.marquee-card span {
  display: inline-flex;
  margin-bottom: 8px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 900;
}

.marquee-card h3 {
  margin-bottom: 0;
  font-size: 20px;
  line-height: 1.45;
}

.section {
  padding: 84px clamp(18px, 5vw, 64px);
}

.section-heading {
  max-width: 860px;
  margin-bottom: 32px;
}

.section-heading.centered {
  margin-inline: auto;
  text-align: center;
}

.service-overview,
.hybrid-section,
.route-section,
.method-cards,
.latest-posts,
.results-section,
.faq-section {
  background: var(--soft);
}

.service-grid,
.method-grid,
.course-grid,
.post-grid,
.results-grid,
.results-list {
  display: grid;
  gap: 16px;
}

.hybrid-grid,
.route-board,
.flow-list,
.faq-list {
  display: grid;
  gap: 16px;
}

.service-grid,
.method-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.results-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 22px;
  max-width: 1120px;
  margin: 0 auto;
}

.results-group {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.results-group h3 {
  margin-bottom: 18px;
}

.results-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: 0;
  margin: 0;
  list-style: none;
}

.service-grid article,
.method-grid article,
.hybrid-grid article,
.course,
.diagnosis-panel,
.contact-form,
.post-card,
.article-card,
.results-card,
.ai-chat-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.service-grid article,
.method-grid article,
.hybrid-grid article,
.course,
.article-card,
.results-card,
.ai-chat-card {
  padding: 24px;
}

.service-grid span,
.method-grid span,
.hybrid-grid span,
.badge,
.post-card span {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

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

.route-board {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.route-board article {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.route-board span {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

.hybrid-grid article,
.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.faq-list {
  max-width: 980px;
  margin: 0 auto;
}

.faq-list details {
  padding: 20px 22px;
}

.faq-list summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 900;
}

.faq-list p {
  margin: 12px 0 0;
  color: var(--muted);
}

.flow-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 1120px;
  padding: 0;
  margin: 0 auto;
  list-style: none;
}

.flow-list li {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
  font-weight: 900;
}

.flow-list span {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  margin-bottom: 16px;
  border-radius: 50%;
  color: #102115;
  background: var(--gold);
}

.service-grid a {
  color: var(--green);
  font-weight: 900;
}

.photo-feature {
  display: grid;
  grid-template-columns: minmax(320px, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  background:
    radial-gradient(circle at 8% 20%, rgba(255, 213, 107, 0.2), transparent 22rem),
    #ffffff;
}

.photo-panel {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.photo-panel img {
  width: 100%;
  height: 520px;
  object-fit: cover;
}

.check-list {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.check-list li {
  padding: 14px 16px;
  border-left: 5px solid var(--green-2);
  border-radius: 8px;
  background: var(--paper);
  font-weight: 900;
}

.research-note {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  background: #ffffff;
}

.exam-kokugo {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  background: #ffffff;
}

.exam-kokugo-panel {
  padding: clamp(28px, 4vw, 44px);
  border-radius: 8px;
  color: #ffffff;
  background:
    linear-gradient(135deg, rgba(9, 24, 41, 0.95), rgba(22, 131, 95, 0.86)),
    url("assets/exam-study-photo.png") center / cover no-repeat;
  box-shadow: var(--shadow);
}

.exam-kokugo-panel .eyebrow,
.exam-kokugo-panel p {
  color: rgba(255, 255, 255, 0.82);
}

.exam-kokugo-panel h2 {
  color: #ffffff;
}

.exam-points {
  display: grid;
  gap: 12px;
}

.exam-points article {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.ai-chat-section {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 1.08fr);
  gap: 28px;
  align-items: center;
  background: var(--soft);
}

.ai-chat-card {
  position: relative;
  overflow: hidden;
}

.ai-chat-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 8px;
  background: linear-gradient(90deg, var(--gold), var(--cyan), var(--rose));
}

.chat-preview {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.chat-bubble {
  max-width: 88%;
  padding: 12px 14px;
  border-radius: 8px;
  background: #effaf5;
  color: var(--green);
  font-weight: 900;
}

.chat-bubble.user {
  justify-self: end;
  color: var(--ink);
  background: var(--paper);
}

.results-card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 26px;
}

.results-list li {
  display: grid;
  place-items: center;
  min-height: 76px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  color: var(--ink);
  font-size: 17px;
  font-weight: 900;
  text-align: center;
}

.results-list li:last-child {
  grid-column: auto;
}

.chat-cta {
  margin-top: 18px;
}

#dify-chatbot-bubble-button {
  --dify-chatbot-bubble-button-bg-color: #16835f;
  --dify-chatbot-bubble-button-width: 58px;
  --dify-chatbot-bubble-button-height: 58px;
  --dify-chatbot-bubble-button-border-radius: 18px;
  --dify-chatbot-bubble-button-box-shadow: 0 16px 34px rgba(22, 131, 95, 0.28);
}

.post-card {
  overflow: hidden;
}

.post-card img {
  width: 100%;
  height: 210px;
  object-fit: cover;
}

.post-card span,
.post-card h3 {
  margin-left: 20px;
  margin-right: 20px;
}

.post-card span {
  margin-top: 20px;
}

.post-card h3 {
  margin-bottom: 22px;
}

.diagnosis,
.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 28px;
  align-items: start;
}

.diagnosis-panel,
.contact-form {
  display: grid;
  gap: 16px;
  padding: 24px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 900;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.subject-field {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.subject-field legend {
  padding: 0 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 900;
}

.subject-field label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink);
}

.subject-field input {
  width: auto;
  min-height: auto;
}

input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  color: var(--ink);
  background: #ffffff;
  font: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.diagnosis-result,
.form-status {
  min-height: 48px;
  padding: 12px;
  border-radius: 8px;
  color: var(--green);
  background: #effaf5;
}

.form-status.is-error {
  color: #a23b3b;
  background: #fff0f0;
}

.contact-form button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.course.featured {
  border-color: #bfe7d7;
  background: linear-gradient(180deg, #f1fff9, #ffffff);
}

.product-grid {
  align-items: stretch;
}

.product-card {
  display: grid;
  gap: 14px;
  align-content: start;
}

.product-card .button {
  align-self: end;
  margin-top: 6px;
}

.offer-strip,
.bundle-panel {
  display: grid;
  align-items: center;
  gap: 18px;
  max-width: 1120px;
  margin: 0 auto 22px;
  border: 1px solid #bfe7d7;
  border-radius: 8px;
  background: #f1fff9;
  box-shadow: 0 16px 34px rgba(25, 37, 55, 0.08);
}

.offer-strip {
  grid-template-columns: auto minmax(0, 1fr);
  padding: 18px 22px;
}

.offer-strip strong {
  display: inline-grid;
  place-items: center;
  min-height: 42px;
  padding: 8px 14px;
  border-radius: 8px;
  color: #102115;
  background: var(--gold);
  font-weight: 900;
}

.offer-strip span,
.bundle-panel p,
.catalog-heading p,
.mini-course p {
  color: var(--muted);
}

.bundle-panel {
  grid-template-columns: minmax(0, 1fr) auto;
  margin-top: 22px;
  margin-bottom: 0;
  padding: 26px;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.96), rgba(241, 255, 249, 0.92)),
    url("assets/route-planning-board.png") right center / 42% auto no-repeat;
}

.bundle-panel h3 {
  margin-bottom: 8px;
  font-size: clamp(24px, 2.8vw, 34px);
}

.course-thumb {
  position: relative;
  display: grid;
  place-items: end start;
  min-height: 158px;
  padding: 18px;
  border-radius: 8px;
  overflow: hidden;
  color: #ffffff;
  background: #10233f;
}

.course-thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent 38%),
    linear-gradient(180deg, transparent 10%, rgba(9, 24, 41, 0.76));
}

.course-thumb::after {
  content: "";
  position: absolute;
  right: 18px;
  top: 18px;
  width: 74px;
  height: 74px;
  border: 2px solid rgba(255, 255, 255, 0.34);
  border-radius: 50%;
}

.course-thumb span {
  position: relative;
  z-index: 1;
  margin: 0;
  color: #ffffff;
  font-size: 13px;
  letter-spacing: 0;
}

.course-thumb.saitama {
  background:
    linear-gradient(135deg, rgba(12, 109, 95, 0.88), rgba(18, 51, 91, 0.9)),
    url("assets/exam-study-photo.png") center / cover no-repeat;
}

.course-thumb.todai-bunka {
  background:
    linear-gradient(135deg, rgba(32, 55, 112, 0.9), rgba(159, 73, 104, 0.82)),
    url("assets/statement-photo.png") center / cover no-repeat;
}

.course-thumb.todai-rika {
  background:
    linear-gradient(135deg, rgba(17, 80, 112, 0.9), rgba(19, 132, 101, 0.82)),
    url("assets/route-planning-board.png") center / cover no-repeat;
}

.course-thumb.hisho {
  background:
    linear-gradient(135deg, rgba(32, 124, 186, 0.9), rgba(93, 230, 244, 0.62)),
    url("assets/study-colorful-student.png") center / cover no-repeat;
}

.course-thumb.hado {
  background:
    linear-gradient(135deg, rgba(9, 24, 41, 0.94), rgba(122, 75, 36, 0.82)),
    url("assets/exam-study-photo.png") center / cover no-repeat;
}

.course-thumb.tensho {
  background:
    linear-gradient(135deg, rgba(43, 61, 130, 0.92), rgba(159, 73, 104, 0.72)),
    url("assets/statement-photo.png") center / cover no-repeat;
}

.course-thumb.raijin {
  background:
    linear-gradient(135deg, rgba(11, 65, 104, 0.94), rgba(34, 160, 107, 0.74)),
    url("assets/route-planning-board.png") center / cover no-repeat;
}

.course-thumb.hisho::after {
  border-radius: 10px 50% 50% 10px;
  transform: rotate(-22deg);
  border-color: rgba(255, 255, 255, 0.44);
}

.course-thumb.hado::after {
  border-radius: 8px;
  border-color: rgba(255, 213, 107, 0.56);
  transform: rotate(45deg);
}

.course-thumb.tensho::after {
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: inset 0 0 0 12px rgba(255, 255, 255, 0.08);
}

.course-thumb.raijin::after {
  width: 42px;
  height: 86px;
  border-width: 0 4px 4px 0;
  border-radius: 0;
  transform: rotate(28deg);
  border-color: rgba(255, 213, 107, 0.74);
}

.course-thumb.writing,
.course-thumb.kokugo {
  background:
    linear-gradient(135deg, rgba(154, 73, 104, 0.86), rgba(16, 35, 63, 0.88)),
    url("assets/essay-photo.png") center / cover no-repeat;
}

.course-thumb.coaching {
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.88), rgba(255, 135, 181, 0.48)),
    url("assets/study-colorful-student.png") center / cover no-repeat;
}

.mini-list {
  display: grid;
  gap: 8px;
  padding-left: 1.1em;
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}

.catalog-section {
  background: #fbfdf9;
}

.catalog-group {
  max-width: 1180px;
  margin: 0 auto 34px;
}

.catalog-group:last-child {
  margin-bottom: 0;
}

.catalog-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(260px, 0.28fr);
  gap: 22px;
  align-items: end;
  margin-bottom: 16px;
}

.catalog-heading h3 {
  margin-bottom: 0;
  font-size: clamp(24px, 2.7vw, 34px);
}

.catalog-heading p {
  margin-bottom: 0;
  font-weight: 800;
}

.mini-course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.todai-catalog {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.mini-course {
  display: grid;
  gap: 10px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 16px 34px rgba(25, 37, 55, 0.08);
}

.mini-course h4 {
  min-height: 54px;
  margin: 0;
  color: #183454;
  font-size: 17px;
  line-height: 1.45;
}

.mini-course p {
  margin-bottom: 0;
  font-size: 14px;
}

.mini-course strong {
  color: var(--green);
  font-size: 18px;
}

.course-thumb.mini {
  min-height: 112px;
  padding: 14px;
}

.course-thumb.mini::after {
  width: 50px;
  height: 50px;
}

.course-thumb.japanese {
  background: linear-gradient(135deg, #b34870, #10233f);
}

.course-thumb.math {
  background: linear-gradient(135deg, #245ba8, #0f766e);
}

.course-thumb.english {
  background: linear-gradient(135deg, #2372b9, #8c5fbf);
}

.course-thumb.science {
  background: linear-gradient(135deg, #0f766e, #9a6b00);
}

.course-thumb.social {
  background: linear-gradient(135deg, #6b5bbd, #17385f);
}

.course-thumb.listening {
  background: linear-gradient(135deg, #10233f, #22a06b);
}

.course-thumb.classic {
  background: linear-gradient(135deg, #7a4b24, #b34870);
}

.personal-section {
  background: #ffffff;
}

.price {
  color: var(--ink) !important;
  font-size: 28px;
  font-weight: 900;
}

.page-hero {
  padding: 84px clamp(18px, 5vw, 64px);
  color: #ffffff;
  background:
    linear-gradient(90deg, rgba(9, 24, 41, 0.94), rgba(9, 24, 41, 0.64)),
    url("assets/exam-study-photo.png") center / cover no-repeat;
}

.route-hero {
  background:
    linear-gradient(90deg, rgba(9, 24, 41, 0.94), rgba(9, 24, 41, 0.62)),
    url("assets/exam-study-photo.png") center / cover no-repeat;
}

.books-hero {
  background:
    linear-gradient(90deg, rgba(9, 24, 41, 0.92), rgba(22, 131, 95, 0.42)),
    url("assets/hero-kokugo.png") center / cover no-repeat;
}

.teacher-hero {
  color: #ffffff;
  background:
    linear-gradient(90deg, rgba(4, 15, 31, 0.96), rgba(15, 47, 67, 0.82), rgba(9, 24, 41, 0.66)),
    url("assets/statement-photo.png") center / cover no-repeat;
}

.teacher-hero .eyebrow {
  color: #ffd56b;
}

.teacher-hero h1 {
  color: #ffffff;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.34);
}

.teacher-hero .lead {
  color: #eef7ff;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.24);
}

.page-hero .lead {
  max-width: 720px;
  margin-bottom: 0;
}

.route-map {
  background: #ffffff;
}

.route-timeline,
.book-grid,
.policy-grid {
  display: grid;
  gap: 18px;
}

.route-timeline {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.route-timeline article,
.book-card,
.policy-grid article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 16px 34px rgba(25, 37, 55, 0.08);
}

.route-timeline span,
.book-card span,
.policy-grid span {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

.split-feature,
.instructor-profile,
.material-note {
  display: grid;
  align-items: center;
  gap: 28px;
}

.split-feature,
.instructor-profile {
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

.split-feature img,
.profile-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.split-feature .button,
.message-band .button {
  margin-top: 14px;
}

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

.book-card ul {
  margin: 14px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.book-card.featured {
  border-color: #bfe7d7;
  background: linear-gradient(180deg, #f1fff9, #ffffff);
}

.managed-content-section {
  background: #ffffff;
}

.managed-content-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.managed-content-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 16px 34px rgba(25, 37, 55, 0.08);
}

.managed-content-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.managed-content-card div {
  padding: 22px;
}

.managed-content-card span {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
}

.managed-content-card h3 {
  margin-bottom: 10px;
}

.managed-content-card p {
  margin: 0;
  color: var(--muted);
}

.material-note {
  grid-template-columns: minmax(0, 1fr) auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fbfdf9;
}

.profile-copy p {
  color: var(--muted);
}

.profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.profile-tags span {
  padding: 7px 10px;
  border: 1px solid #badccc;
  border-radius: 999px;
  color: var(--green);
  background: #f0fbf6;
  font-size: 13px;
  font-weight: 900;
}

.founder-message {
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(0, 1.08fr);
  gap: 32px;
  align-items: start;
  background: #ffffff;
}

.founder-card {
  position: sticky;
  top: 108px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.founder-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.founder-card > div {
  padding: 24px;
}

.founder-card h2 {
  margin-bottom: 4px;
  font-size: clamp(32px, 5vw, 52px);
}

.founder-card p {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}

.founder-letter {
  padding: clamp(26px, 5vw, 46px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(241, 255, 249, 0.86), rgba(255, 255, 255, 0.96)),
    #ffffff;
}

.founder-letter p {
  margin: 0;
  color: #344054;
  font-size: 17px;
  line-height: 2;
}

.founder-letter p + p {
  margin-top: 20px;
}

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

.message-band {
  text-align: center;
  background: #fbfdf9;
}

.message-band p {
  max-width: 700px;
  margin-right: auto;
  margin-left: auto;
  color: var(--muted);
}

.detail-list {
  display: grid;
  gap: 22px;
}

.detail-item {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 28px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.detail-item img {
  width: 100%;
  height: 280px;
  border-radius: 8px;
  object-fit: cover;
}

.article-wrap {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(260px, 1fr);
  gap: 36px;
  align-items: start;
}

.article-body,
.sidebar {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.article-body h2 {
  margin-top: 36px;
}

.article-body ul {
  padding-left: 1.2em;
}

.sidebar {
  position: sticky;
  top: 96px;
}

.site-footer {
  justify-content: space-between;
  gap: 20px;
  padding: 26px clamp(18px, 5vw, 64px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
}

@keyframes imageSlide {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(calc(-50% - 9px));
  }
}

@keyframes floatPanel {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@media (max-width: 980px) {
  .nav,
  .header-cta {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: 720px;
  }

  .promise-strip,
  .message-strip,
  .consult-band,
  .offer-strip,
  .bundle-panel,
  .catalog-heading,
  .visual-story,
  .photo-feature,
  .route-visual-section,
  .program-layout,
  .program-main,
  .diagnosis,
  .contact,
  .research-note,
  .detail-item,
  .article-wrap,
  .split-feature,
  .instructor-profile,
  .founder-message,
  .material-note,
  .exam-kokugo,
  .ai-chat-section,
  .results-columns {
    display: grid;
    grid-template-columns: 1fr;
  }

  .promise-strip div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .promise-strip div:last-child {
    border-bottom: 0;
  }

  .service-grid,
  .method-grid,
  .hybrid-grid,
  .route-board,
  .course-grid,
  .post-grid,
  .results-grid,
  .results-list,
  .flow-list,
  .form-row,
  .subject-grid,
  .method-cards,
  .mini-stats,
  .program-list,
  .mini-course-grid,
  .todai-catalog,
  .managed-content-grid,
  .route-timeline,
  .book-grid,
  .policy-grid {
    grid-template-columns: 1fr;
  }

  .results-list li:last-child {
    grid-column: auto;
  }

  .marquee-card,
  .marquee-card img {
    width: 78vw;
    height: 250px;
  }

  .photo-panel img {
    height: 380px;
  }

  .bundle-panel {
    background: #f1fff9;
  }

  .sidebar {
    position: static;
  }

  .founder-card {
    position: static;
  }
}

@media (max-width: 560px) {
  .site-header {
    padding: 14px 16px;
  }

  .brand {
    font-size: 14px;
  }

  .brand-logo {
    width: 148px;
  }

  h1 {
    font-size: 37px;
  }

  .lead {
    font-size: 16px;
  }

  .button {
    width: 100%;
  }

  .visual-story-card,
  .visual-story-card img {
    min-height: 360px;
  }

  .section {
    padding-block: 64px;
  }

  .course-thumb {
    min-height: 138px;
  }

  .mini-course h4 {
    min-height: auto;
  }
}

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

  .marquee-track {
    animation: none;
  }
}