:root {
  --teacher-ink: #254e70;
  --teacher-text: #496270;
  --teacher-coral: #e56f65;
  --teacher-coral-dark: #c7524b;
  --teacher-gold: #f6c753;
  --teacher-mint: #e9f6f3;
  --teacher-blush: #fff2ee;
  --teacher-sky: #f1f8fa;
  --teacher-paper: #fff;
  --teacher-border: #dce7eb;
  --teacher-shadow: 0 12px 28px rgba(37, 78, 112, 0.09);
}
.teacher-page :focus-visible { outline: 3px solid var(--teacher-gold); outline-offset: 3px; }
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body.teacher-page {
  margin: 0;
  background: #f9fcfc;
  color: var(--teacher-text);
  font-family: "DM Sans", Arial, sans-serif;
  line-height: 1.6;
}
.teacher-page h1,
.teacher-page h2,
.teacher-page h3 {
  margin-top: 0;
  color: var(--teacher-ink);
  font-family: "Nunito", Arial, sans-serif;
  line-height: 1.18;
}
.teacher-page--ja {
  font-family: "Noto Sans JP", "DM Sans", sans-serif;
}
.teacher-page--ko {
  font-family: "Noto Sans KR", "DM Sans", sans-serif;
}
.teacher-page--tw {
  font-family: "Noto Sans TC", "DM Sans", sans-serif;
}
.teacher-page--cn {
  font-family: "Noto Sans SC", "DM Sans", sans-serif;
}
.teacher-page--ja h1,
.teacher-page--ja h2,
.teacher-page--ja h3,
.teacher-page--ko h1,
.teacher-page--ko h2,
.teacher-page--ko h3,
.teacher-page--tw h1,
.teacher-page--tw h2,
.teacher-page--tw h3,
.teacher-page--cn h1,
.teacher-page--cn h2,
.teacher-page--cn h3 {
  font-family: inherit;
}
.teacher-shell {
  width: min(1160px, calc(100% - 2rem));
  margin: auto;
}
.teacher-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--teacher-border);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}
.teacher-header__inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  gap: 1.2rem;
}
.teacher-brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--teacher-ink);
  font-family: "Nunito", sans-serif;
  font-size: 1.1rem;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}
.teacher-brand img {
  border-radius: 9px;
}
.teacher-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.2rem;
  flex: 1;
}
.teacher-nav a {
  padding: 0.56rem 0.7rem;
  border-radius: 8px;
  color: var(--teacher-ink);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}
.teacher-nav a:hover,
.teacher-nav a:focus-visible {
  background: var(--teacher-blush);
  color: var(--teacher-coral-dark);
}
.teacher-home-link {
  padding: 0.52rem 0.82rem;
  border: 1px solid var(--teacher-border);
  border-radius: 9px;
  color: var(--teacher-ink);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}
.teacher-main {
  padding: 1.15rem 0 3.2rem;
}
.teacher-breadcrumb {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.9rem;
  color: #708793;
  font-size: 0.9rem;
}
.teacher-breadcrumb a {
  color: var(--teacher-ink);
  text-decoration: none;
}
.teacher-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr);
  align-items: center;
  gap: clamp(1.2rem, 4vw, 3rem);
  padding: clamp(1.3rem, 4vw, 3rem);
  border: 1px solid #d8e9e4;
  border-radius: 20px;
  background: linear-gradient(118deg, #e9f6f3, #fffaf6 60%, #fff2ee);
}
.teacher-kicker {
  display: inline-flex;
  margin: 0 0 0.75rem;
  padding: 0.38rem 0.66rem;
  border-radius: 999px;
  background: #fff;
  color: #397466;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.teacher-hero h1 {
  max-width: 15ch;
  margin-bottom: 0.8rem;
  font-size: clamp(2.25rem, 5vw, 4.25rem);
}
.teacher-lead {
  max-width: 62ch;
  margin: 0 0 1.35rem;
  font-size: clamp(1rem, 1.7vw, 1.17rem);
}
.teacher-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.7rem 1.12rem;
  border: 2px solid var(--teacher-coral);
  border-radius: 10px;
  background: var(--teacher-coral);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}
.teacher-btn:hover,
.teacher-btn:focus-visible {
  border-color: var(--teacher-coral-dark);
  background: var(--teacher-coral-dark);
}
.teacher-visual {
  min-height: 330px;
  display: grid;
  place-items: center;
  padding: 2rem;
  border: 2px dashed #a8ccc3;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.67);
  color: #53796f;
  text-align: center;
}
.teacher-visual svg {
  width: 92px;
  height: 92px;
  margin-bottom: 0.75rem;
  color: #65a596;
}
.teacher-visual strong,
.teacher-visual small {
  display: block;
}
.teacher-visual small {
  margin-top: 0.45rem;
  font-size: 0.78rem;
}
.teacher-section {
  padding: clamp(3rem, 7vw, 5.2rem) 0 0;
  scroll-margin-top: 84px;
}
.teacher-section__head {
  max-width: 720px;
  margin-bottom: 1.5rem;
}
.teacher-section__head h2 {
  margin-bottom: 0.45rem;
  font-size: clamp(1.75rem, 3vw, 2.55rem);
}
.teacher-section__head p {
  margin: 0;
}
.teacher-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.teacher-card,
.strategy-card,
.tool-card,
.talk-card {
  border: 1px solid var(--teacher-border);
  border-radius: 15px;
  background: #fff;
  box-shadow: var(--teacher-shadow);
}
.teacher-card {
  padding: 1.25rem;
}
.teacher-card__icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 0.85rem;
  border-radius: 12px;
  background: var(--teacher-mint);
  font-size: 1.35rem;
}
.teacher-card:nth-child(3n + 2) .teacher-card__icon {
  background: var(--teacher-blush);
}
.teacher-card:nth-child(3n) .teacher-card__icon {
  background: #fff7dc;
}
.teacher-card h3,
.strategy-card h3,
.tool-card h3,
.talk-card h3 {
  margin-bottom: 0.45rem;
  font-size: 1.18rem;
}
.teacher-card p,
.strategy-card p,
.talk-card p {
  margin: 0;
}
.strategy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.strategy-card {
  position: relative;
  padding: 1.4rem 1.4rem 1.35rem 4.8rem;
}
.strategy-card__number {
  position: absolute;
  left: 1.25rem;
  top: 1.25rem;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--teacher-blush);
  color: var(--teacher-coral-dark);
  font-weight: 800;
}
.strategy-card a {
  display: inline-block;
  margin-top: 0.8rem;
  color: var(--teacher-coral-dark);
  font-weight: 800;
  text-decoration: none;
}
.toolbox {
  padding: clamp(1.2rem, 3vw, 2rem);
  border-radius: 20px;
  background: var(--teacher-ink);
}
.toolbox .teacher-section__head h2,
.toolbox .teacher-section__head p {
  color: #fff;
}
.tool-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.8rem;
}
.tool-card {
  display: flex;
  min-height: 150px;
  flex-direction: column;
  padding: 1rem;
}
.tool-card span {
  font-size: 1.5rem;
}
.tool-card h3 {
  margin: 0.8rem 0 0.35rem;
}
.tool-card small {
  margin-top: auto;
  color: #718590;
}
.talks {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 1rem;
}
.talk-intro {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border-radius: 18px;
  background: var(--teacher-blush);
}
.talk-intro h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}
.talk-list {
  display: grid;
  gap: 0.8rem;
}
.talk-card {
  padding: 1.2rem 1.3rem;
}
.teacher-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.5rem, 4vw, 2.7rem);
  border-radius: 20px;
  background: linear-gradient(110deg, #254e70, #346c81);
  color: #fff;
}
.teacher-cta h2 {
  margin-bottom: 0.4rem;
  color: #fff;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}
.teacher-cta p {
  max-width: 720px;
  margin: 0;
}
.teacher-footer {
  padding: 1.8rem 1rem;
  border-top: 1px solid var(--teacher-border);
  color: #708793;
  text-align: center;
  font-size: 0.9rem;
}
@media (max-width: 920px) {
  .teacher-header__inner {
    flex-wrap: wrap;
    padding: 0.65rem 0;
  }
  .teacher-nav {
    order: 3;
    width: 100%;
    overflow: auto;
    justify-content: flex-start;
  }
  .teacher-hero {
    grid-template-columns: 1fr;
  }
  .teacher-visual {
    min-height: 240px;
  }
  .teacher-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tool-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .talks {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 600px) {
  .teacher-shell {
    width: min(100% - 1.2rem, 1160px);
  }
  .teacher-brand span {
    font-size: 0.98rem;
  }
  .teacher-home-link {
    margin-left: auto;
  }
  .teacher-nav a {
    white-space: nowrap;
  }
  .teacher-hero {
    padding: 1.25rem;
  }
  .teacher-hero h1 {
    font-size: 2.35rem;
  }
  .teacher-grid,
  .strategy-grid,
  .tool-grid {
    grid-template-columns: 1fr;
  }
  .strategy-card {
    padding-left: 4.4rem;
  }
  .teacher-cta {
    align-items: flex-start;
    flex-direction: column;
  }
  .teacher-btn {
    width: 100%;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
.strategy-feature--everyday {
  border-color: #cddce9;
  background: linear-gradient(135deg, #f0f7fb, #fff 55%, #f7f1ff);
}
.strategy-feature--everyday .strategy-feature__step-number {
  background: #4f6f8f;
}
.strategy-feature--everyday .strategy-feature__tips {
  border-left-color: #79a9c3;
  background: #f2f8fb;
}
.teacher-visual--photo {
  display: block;
  min-height: 0;
  padding: 0;
  overflow: hidden;
  border: 0;
  background: #dceee9;
  box-shadow: 0 14px 32px rgba(37, 78, 112, 0.13);
}
.teacher-visual--photo img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3/2;
  object-fit: cover;
}
.teacher-visual--photo.is-missing {
  min-height: 280px;
  display: grid;
  padding: 2rem;
  border: 2px dashed #a8ccc3;
  background: rgba(255, 255, 255, 0.67);
}
.strategy-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  gap: clamp(1.4rem, 4vw, 3rem);
  margin-top: 1.25rem;
  padding: clamp(1.35rem, 4vw, 2.75rem);
  border: 1px solid #cfe4de;
  border-radius: 20px;
  background: linear-gradient(135deg, #f2faf8, #fff 58%, #fff5ef);
  box-shadow: var(--teacher-shadow);
}
.strategy-feature__content > p {
  font-size: 1.05rem;
}
.strategy-feature__content h3 {
  margin-bottom: 0.75rem;
  font-size: clamp(1.65rem, 3vw, 2.4rem);
}
.strategy-feature__promise {
  margin: 0 0 1rem;
  color: var(--teacher-ink);
  font-weight: 800;
}
.strategy-feature__steps {
  display: grid;
  gap: 0.8rem;
  margin: 1.3rem 0 0;
  padding: 0;
  list-style: none;
}
.strategy-feature__step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 0.8rem;
  align-items: start;
  padding: 1rem;
  border: 1px solid var(--teacher-border);
  border-radius: 14px;
  background: #fff;
}
.strategy-feature__step-number {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--teacher-ink);
  color: #fff;
  font-family: "Nunito", sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
}
.strategy-feature__step strong {
  display: block;
  color: var(--teacher-ink);
  font-size: 1.05rem;
}
.strategy-feature__step p {
  margin: 0.2rem 0 0;
}
.strategy-feature__time {
  color: var(--teacher-coral-dark);
  font-size: 0.85rem;
  font-weight: 800;
}
.strategy-feature__media {
  align-self: start;
  margin: 0;
  position: sticky;
  top: 92px;
}
.strategy-feature__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 10px 28px rgba(37, 78, 112, 0.14);
}
.strategy-feature__media figcaption {
  margin-top: 0.65rem;
  color: #708793;
  font-size: 0.82rem;
  text-align: center;
}
.strategy-feature__fallback {
  display: none;
  min-height: 360px;
  place-items: center;
  padding: 2rem;
  border: 2px dashed #a8ccc3;
  border-radius: 16px;
  background: #fff;
  color: #53796f;
  text-align: center;
}
.strategy-feature__media.is-missing img {
  display: none;
}
.strategy-feature__media.is-missing .strategy-feature__fallback {
  display: grid;
}
@media (max-width: 920px) {
  .strategy-feature {
    grid-template-columns: 1fr;
  }
  .strategy-feature__media {
    position: static;
    order: -1;
    max-width: 620px;
    margin: auto;
  }
}
@media (max-width: 600px) {
  .strategy-feature {
    padding: 1rem;
  }
  .strategy-feature__step {
    grid-template-columns: 42px 1fr;
    padding: 0.85rem;
  }
  .strategy-feature__step-number {
    width: 38px;
    height: 38px;
  }
}
.strategy-feature--regulation {
  border-color: #f0d9c7;
  background: linear-gradient(135deg, #fff8ef, #fff 55%, #edf8f5);
}
.strategy-feature--regulation .strategy-feature__step-number {
  background: var(--teacher-coral-dark);
}
.strategy-feature__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
}
.strategy-feature__tag {
  display: inline-flex;
  padding: 0.35rem 0.62rem;
  border-radius: 999px;
  background: #fff0d8;
  color: #85541b;
  font-size: 0.78rem;
  font-weight: 800;
}
.strategy-feature__tips {
  margin-top: 1rem;
  padding: 1.1rem 1.2rem;
  border-left: 4px solid var(--teacher-gold);
  border-radius: 0 12px 12px 0;
  background: #fff9e8;
}
.strategy-feature__tips strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--teacher-ink);
}
.strategy-feature__tips p {
  margin: 0;
}
.strategy-feature__takeaway {
  margin-top: 1rem;
  padding: 1rem 1.15rem;
  border-radius: 12px;
  background: var(--teacher-ink);
  color: #fff;
  font-weight: 700;
}
.strategy-feature__quote {
  display: block;
  margin-top: 0.25rem;
  color: #6c7f88;
  font-size: 0.92rem;
  font-style: italic;
}
.tool-grid .tool-card {
  min-height: 230px;
}
.tool-card p {
  margin: 0.25rem 0 1rem;
  color: #5e7480;
  font-size: 0.9rem;
  line-height: 1.5;
}
.tool-card a {
  display: inline-flex;
  margin-top: auto;
  color: var(--teacher-coral-dark);
  font-size: 0.88rem;
  font-weight: 800;
  text-decoration: none;
}
.tool-card a:hover,
.tool-card a:focus-visible {
  text-decoration: underline;
}
.tool-card__cover{width:100%;height:150px;margin-bottom:.75rem;border:1px solid var(--teacher-border);border-radius:10px;object-fit:cover;object-position:top;background:#fff}.tool-grid .tool-card{min-height:390px}
@media (max-width: 600px) {
  .teacher-header__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.65rem;
    padding: 0.7rem 0;
  }
  .teacher-brand { min-width: 0; }
  .teacher-brand span {
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .teacher-home-link {
    margin: 0;
    padding: 0.48rem 0.62rem;
    font-size: 0.78rem;
  }
  .teacher-nav {
    grid-column: 1 / -1;
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.45rem;
    padding: 0.65rem;
    border: 1px solid var(--teacher-border);
    border-radius: 14px;
    background: linear-gradient(135deg, var(--teacher-sky), #fff8f4);
    overflow: visible;
  }
  .teacher-nav::before {
    content: "Explore Teachers Hub";
    grid-column: 1 / -1;
    color: #708793;
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }
  .teacher-nav a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    min-height: 42px;
    padding: 0.55rem 0.35rem;
    border: 1px solid #d7e5e8;
    border-radius: 10px;
    background: #fff;
    box-shadow: 0 4px 10px rgba(37, 78, 112, 0.06);
    font-size: 0.78rem;
    line-height: 1.2;
    text-align: center;
    white-space: normal;
  }
  .teacher-nav a::after {
    content: "›";
    margin-left: 0.3rem;
    color: var(--teacher-coral);
    font-size: 1.05rem;
  }
  .teacher-main { padding-top: 0.8rem; }
}