:root {
      color-scheme: light;
      --ink: #2C2416;
      --muted: #6F604B;
      --line: #E8DCC8;
      --paper: #FDF8F0;
      --surface: #FFFFFF;
      --surface-alt: #F5EDE0;
      --accent: #8B6914;
      --clay: #A06A20;
      --deep: #2C2416;
      --warm: #F5EDE0;
      --green: #5A7B3A;
      --shadow: 0 18px 44px rgba(44, 36, 22, 0.1);
      --ease-out-ui: cubic-bezier(0.23, 1, 0.32, 1);
      --ease-in-out-ui: cubic-bezier(0.77, 0, 0.175, 1);
      --ease-standard-ui: cubic-bezier(0.2, 0, 0, 1);
      --duration-press: 140ms;
      --duration-ui: 180ms;
      --focus-ring: 0 0 0 3px rgba(139, 105, 20, 0.22);
      --shadow-card: 0 1px 2px rgba(44, 36, 22, 0.04), 0 12px 30px rgba(44, 36, 22, 0.06);
      --shadow-card-hover: 0 2px 4px rgba(44, 36, 22, 0.06), 0 18px 38px rgba(44, 36, 22, 0.10);
      --ease-editorial: cubic-bezier(0.22, 1, 0.36, 1);
    }
    * { box-sizing: border-box; }
    .skip-link {
      position: fixed;
      left: 16px;
      top: 12px;
      z-index: 10000;
      padding: 10px 16px;
      border-radius: 8px;
      background: var(--deep);
      color: #fff;
      font-weight: 800;
      text-decoration: none;
      transform: translateY(-160%);
      transition: transform 240ms var(--ease-editorial);
    }
    .skip-link:focus { transform: translateY(0); outline: 3px solid rgba(139, 105, 20, .28); outline-offset: 2px; }
    body {
      margin: 0;
      font-family: "Noto Sans KR", "Apple SD Gothic Neo", system-ui, sans-serif;
      font-weight: 300;
      color: var(--ink);
      background:
        linear-gradient(180deg, #FDFAF2 0, #FDFAF2 560px, #F5EDE0 560px, #FFFDF8 960px, #FDFAF2 100%);
      line-height: 1.7;
      letter-spacing: 0;
      text-rendering: optimizeLegibility;
    }
    a { color: inherit; -webkit-tap-highlight-color: transparent; }
    button { -webkit-tap-highlight-color: transparent; }
    h1,
    h2,
    h3 {
      font-family: 'Nanum Myeongjo', 'Batang', Georgia, serif;
    }
    .eyebrow,
    .section-eyebrow {
      font-family: "Noto Sans KR", "Apple SD Gothic Neo", system-ui, sans-serif;
    }
    h1,
    h2,
    h3,
    p,
    li {
      word-break: keep-all;
      overflow-wrap: break-word;
      text-wrap: pretty;
    }
    .topbar {
      position: sticky;
      top: 0;
      z-index: 10;
      background: rgba(253, 248, 240, 0.94);
      border-bottom: 1px solid rgba(139, 105, 20, 0.16);
      backdrop-filter: blur(14px);
    }
    .topbar-inner {
      max-width: 1080px;
      margin: 0 auto;
      padding: 12px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .brand {
      font-weight: 800;
      color: var(--deep);
      text-decoration: none;
      letter-spacing: 0;
    }
    .nav {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .nav a,
    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 9px 14px;
      border-radius: 8px;
      border: 1px solid var(--line);
      color: #2C2416;
      text-decoration: none;
      font-size: 0.93rem;
      font-weight: 800;
      background: rgba(253, 248, 240, 0.9);
      transition: transform var(--duration-press) var(--ease-out-ui),
        border-color var(--duration-ui) var(--ease-standard-ui),
        background-color var(--duration-ui) var(--ease-standard-ui),
        color var(--duration-ui) var(--ease-standard-ui);
    }
    .nav a:active,
    .button:active,
    .section-hub-card:active,
    .mobile-cta-bar .mcta:active {
      transform: scale(0.97);
    }
    @media (hover: hover) and (pointer: fine) {
      .nav a:hover,
      .button:hover {
        border-color: rgba(139, 105, 20, 0.34);
        background: #F5EDE0;
      }
    }
    .button.primary {
      border-color: #6B4F0E;
      background: #6B4F0E;
      color: #fff;
    }
    button.button {
      cursor: pointer;
      font: inherit;
    }
    .hero {
      max-width: 1120px;
      margin: 0 auto;
      padding: 68px 20px 48px;
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
      gap: 40px;
      align-items: center;
    }
    .eyebrow {
      margin: 0 0 10px;
      color: var(--accent);
      font-size: 0.9rem;
      font-weight: 800;
      text-transform: uppercase;
    }
    h1 {
      margin: 0;
      font-size: clamp(2rem, 5vw, 4.2rem);
      line-height: 1.08;
      letter-spacing: 0;
      color: var(--deep);
    }
    .lead {
      margin: 18px 0 0;
      color: var(--muted);
      font-size: 1.08rem;
      max-width: 720px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }
    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }
    .hero-stats .stat {
      flex: 1 1 140px;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--surface);
      padding: 14px 16px;
    }
    .hero-stats .stat b {
      display: block;
      font-size: 1.7rem;
      color: var(--deep);
      line-height: 1.1;
    }
    .hero-stats .stat span {
      display: block;
      margin-top: 4px;
      font-size: 0.8rem;
      color: var(--muted);
    }
    .hero-figure {
      margin: 0;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--line);
      background: var(--paper);
    }
    .hero-figure img {
      display: block;
      width: 100%;
      height: auto;
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }
    .hero-figure figcaption {
      padding: 10px 12px;
      color: #6F604B;
      font-size: 0.86rem;
      background: #FFFDF8;
    }
    main {
      max-width: 1120px;
      margin: 0 auto;
      padding: 0 20px 56px;
    }
    section[id] {
      scroll-margin-top: 112px;
    }
    .band {
      padding: 64px 0;
      border-top: 1px solid rgba(139, 105, 20, 0.14);
      position: relative;
    }
    .band:nth-of-type(2n + 3) {
      background: linear-gradient(180deg, rgba(245, 237, 224, 0.76), rgba(253, 248, 240, 0));
      clip-path: inset(0 -100vmax);
    }
    main > .band:nth-of-type(n + 5) {
      content-visibility: auto;
      contain-intrinsic-size: auto 760px;
    }
    .section-head {
      max-width: 820px;
      margin-bottom: 28px;
      padding-left: 20px;
      border-left: 3px solid var(--accent);
    }
    h2 {
      margin: 0;
      font-size: clamp(1.35rem, 3vw, 2.05rem);
      line-height: 1.25;
      letter-spacing: 0;
      color: var(--deep);
    }
    .section-head p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 1.02rem;
    }
    .registration-grid {
      display: grid;
      grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.35fr);
      gap: 16px;
      align-items: stretch;
    }
    .registration-card,
    .fee-table-wrap {
      margin: 0;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--surface);
    }
    .registration-card {
      padding: 8px 20px;
    }
    .registration-card > div {
      display: grid;
      grid-template-columns: 118px minmax(0, 1fr);
      gap: 12px;
      padding: 13px 0;
      border-bottom: 1px solid var(--line);
    }
    .registration-card > div:last-child { border-bottom: 0; }
    .registration-card dt {
      color: var(--muted);
      font-size: 0.86rem;
      font-weight: 800;
    }
    .registration-card dd {
      margin: 0;
      color: var(--deep);
      font-weight: 700;
    }
    .fee-table-wrap {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }
    .fee-table {
      width: 100%;
      min-width: 650px;
      border-collapse: collapse;
    }
    .fee-table caption {
      padding: 16px 18px 10px;
      color: var(--deep);
      font-weight: 800;
      text-align: left;
    }
    .fee-table th,
    .fee-table td {
      padding: 12px 14px;
      border-top: 1px solid var(--line);
      text-align: left;
      white-space: nowrap;
    }
    .fee-table thead th {
      background: var(--surface-alt);
      color: var(--muted);
      font-size: 0.84rem;
    }
    .fee-table tbody th { color: var(--deep); }
    .fee-note {
      margin: 0;
      padding: 12px 16px 16px;
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: 0.84rem;
    }
    .registration-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 16px;
    }
    .grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }
    .item {
      border: 1px solid var(--line);
      border-radius: 8px;
      padding: 16px;
      background: var(--surface);
    }
    .item b {
      display: block;
      margin-bottom: 6px;
      color: var(--deep);
    }
    .item p {
      margin: 0;
      color: var(--muted);
      font-size: 0.95rem;
    }
    .timeline {
      display: grid;
      gap: 10px;
      counter-reset: step;
    }
    .timeline p {
      counter-increment: step;
      margin: 0;
      padding: 13px 16px;
      border-left: 4px solid var(--green);
      background: #F5EDE0;
      border-radius: 8px;
    }
    .timeline p::before {
      content: counter(step) ". ";
      font-weight: 800;
      color: var(--green);
    }
    .contact {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 16px;
      align-items: stretch;
    }
    .contact-box {
      border-radius: 8px;
      border: 1px solid var(--line);
      background: var(--warm);
      padding: 18px;
    }
    .contact-box:first-child {
      border-color: rgba(44, 36, 22, 0.22);
      background: var(--deep);
      color: #FFFDF8;
    }
    .contact-box:first-child p,
    .contact-box:first-child .source {
      color: rgba(253, 248, 240, 0.78);
    }
    .contact-box:first-child .button {
      border-color: rgba(253, 248, 240, 0.26);
      background: rgba(253, 248, 240, 0.08);
      color: #FFFDF8;
    }
    .contact-box:first-child .button.primary {
      border-color: #FFFDF8;
      background: #FFFDF8;
      color: var(--deep);
    }
    .contact-box p { margin: 6px 0; }
    .source {
      margin-top: 18px;
      color: #6F604B;
      font-size: 0.9rem;
    }
    .faq-list {
      display: grid;
      gap: 10px;
    }
    .faq-list details {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      padding: 0;
      overflow: hidden;
    }
    .faq-list summary {
      cursor: pointer;
      padding: 14px 16px;
      color: var(--deep);
      font-weight: 800;
    }
    .faq-list details[open] summary {
      border-bottom: 1px solid var(--line);
      background: #F5EDE0;
    }
    .faq-list p {
      margin: 0;
      padding: 14px 16px 16px;
      color: var(--muted);
    }
    .blog-topic-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }
    .blog-library {
      display: grid;
      gap: 18px;
      max-width: 900px;
      margin: 24px auto 0;
      counter-reset: blog-entry;
    }
    .blog-topic {
      display: grid;
      gap: 8px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      padding: 16px;
      text-decoration: none;
    }
    .blog-entry {
      position: relative;
      counter-increment: blog-entry;
      padding: clamp(22px, 3.4vw, 34px) clamp(18px, 3.2vw, 34px) clamp(22px, 3.4vw, 34px) clamp(54px, 5vw, 74px);
    }
    .blog-entry::before {
      content: counter(blog-entry, decimal-leading-zero);
      position: absolute;
      top: clamp(22px, 3.4vw, 34px);
      left: clamp(18px, 2.7vw, 28px);
      color: var(--accent);
      font-size: 0.82rem;
      font-weight: 800;
      line-height: 1;
    }
    .blog-entry:nth-child(even) {
      background: var(--surface-alt);
      border-color: #E8DCC8;
    }
    .blog-topic b {
      color: var(--deep);
      font-size: 1rem;
    }
    .blog-entry h3 {
      margin: 0;
      color: var(--deep);
      font-size: clamp(1.24rem, 2vw, 1.72rem);
      line-height: 1.35;
      letter-spacing: 0;
    }
    .blog-entry .blog-lede {
      color: #4A3B2A;
      font-size: 1.02rem;
      font-weight: 800;
    }
    .blog-topic p {
      margin: 0;
      color: var(--muted);
      font-size: 0.94rem;
    }
    .blog-entry p {
      font-size: 1rem;
      line-height: 1.8;
    }
    .blog-topic span {
      color: var(--accent);
      font-size: 0.86rem;
      font-weight: 800;
    }
    .blog-topic small {
      color: #6F604B;
      font-size: 0.875rem;
      font-weight: 800;
    }
    .reader-split {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
    }
    .reader-note {
      border-left: 3px solid var(--accent);
      padding: 12px 12px 12px 14px;
      background: rgba(245, 237, 224, 0.82);
      border-radius: 6px;
    }
    .reader-note strong {
      display: block;
      color: var(--deep);
      font-size: 0.86rem;
    }
    .reader-note p {
      margin-top: 4px;
    }
    .feature-story {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
      gap: 14px;
      align-items: stretch;
    }
    .feature-story > div {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      padding: 18px;
    }
    .feature-story strong {
      display: block;
      color: var(--deep);
      font-size: 1.05rem;
      margin-bottom: 8px;
    }
    .feature-story ul {
      margin: 10px 0 0;
      padding-left: 18px;
      color: var(--muted);
    }
    .mentor-intro {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(260px, 0.72fr);
      gap: 18px;
      align-items: stretch;
      max-width: 1040px;
      margin: 0 auto;
      padding: clamp(22px, 3vw, 34px);
      border: 1px solid rgba(139, 105, 20, 0.16);
      border-radius: 8px;
      background: linear-gradient(135deg, rgba(253, 248, 240, 0.92), rgba(245, 237, 224, 0.86));
    }
    .mentor-portrait-hero {
      position: relative;
      max-width: 1040px;
      margin: 0 auto 18px;
      overflow: hidden;
      border-radius: 8px;
      background: #102942;
      color: #fff;
    }
    .mentor-portrait-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(7, 25, 43, 0.9) 0%, rgba(7, 25, 43, 0.58) 38%, transparent 68%);
      pointer-events: none;
    }
    .mentor-portrait-hero img {
      display: block;
      width: 100%;
      height: auto;
      aspect-ratio: 16 / 9;
      object-fit: cover;
    }
    .mentor-portrait-copy {
      position: absolute;
      z-index: 1;
      left: clamp(22px, 5vw, 56px);
      top: 50%;
      width: min(43%, 420px);
      transform: translateY(-50%);
      font-family: "Noto Sans KR", "Apple SD Gothic Neo", system-ui, sans-serif;
      font-weight: 300;
    }
    .mentor-portrait-copy p {
      margin: 0 0 10px;
      color: #d7b66a;
      font-size: clamp(0.82rem, 1.4vw, 1rem);
      letter-spacing: 0.08em;
    }
    .mentor-portrait-copy h2 {
      margin: 0;
      color: #fff;
      font-size: clamp(2.2rem, 5vw, 4.5rem);
      font-weight: 500;
      line-height: 1.05;
      letter-spacing: -0.04em;
    }
    .mentor-portrait-copy strong {
      display: block;
      margin-top: 14px;
      color: #fff;
      font-size: clamp(1.08rem, 2vw, 1.45rem);
      font-weight: 400;
    }
    .mentor-portrait-copy span {
      display: block;
      margin-top: 12px;
      color: rgba(255, 255, 255, 0.74);
      font-size: clamp(0.78rem, 1.3vw, 0.95rem);
      line-height: 1.75;
    }
    .mentor-archive-counts {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 16px;
    }
    .mentor-archive-counts b {
      padding: 6px 9px;
      border: 1px solid rgba(215, 182, 106, 0.42);
      border-radius: 999px;
      background: rgba(8, 28, 48, 0.5);
      color: #f1d492;
      font-size: clamp(0.7rem, 1vw, 0.8rem);
      font-weight: 400;
      line-height: 1.2;
      white-space: nowrap;
    }
    .mentor-portrait-hero figcaption {
      position: absolute;
      z-index: 1;
      right: 14px;
      bottom: 10px;
      color: rgba(255, 255, 255, 0.55);
      font-size: 0.75rem;
      font-weight: 300;
    }
    .mentor-intro h2 {
      margin: 6px 0 12px;
      color: var(--deep);
      font-size: clamp(1.55rem, 3vw, 2.2rem);
      line-height: 1.28;
      letter-spacing: 0;
    }
    .mentor-intro p {
      margin: 10px 0 0;
      color: #4A3B2A;
      font-size: 1.02rem;
      line-height: 1.86;
    }
    .mentor-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 18px;
    }
    .mentor-facts {
      display: grid;
      gap: 10px;
      align-content: stretch;
    }
    .mentor-facts div {
      border-left: 4px solid rgba(139, 105, 20, 0.72);
      background: rgba(253, 248, 240, 0.62);
      padding: 12px 0 12px 14px;
    }
    .mentor-facts strong {
      display: block;
      color: var(--deep);
      font-size: 0.98rem;
      line-height: 1.35;
    }
    .mentor-facts span {
      display: block;
      margin-top: 4px;
      color: #6F604B;
      font-size: 0.86rem;
      line-height: 1.5;
    }
    .research-lead {
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(280px, 0.48fr);
      gap: 18px;
      align-items: stretch;
      margin-bottom: 16px;
    }
    .research-statement {
      padding-left: 20px;
      border-left: 4px solid var(--clay);
    }
    .research-statement strong {
      display: block;
      color: var(--deep);
      font-size: 1.08rem;
    }
    .research-statement p {
      margin: 10px 0 0;
      color: #4A3B2A;
      font-size: 1.01rem;
      line-height: 1.82;
    }
    .research-proof {
      border: 1px solid rgba(139, 105, 20, 0.18);
      border-radius: 8px;
      background: var(--surface);
      padding: 18px;
    }
    .research-proof span {
      color: var(--accent);
      font-size: 0.8rem;
      font-weight: 800;
    }
    .research-proof b {
      display: block;
      margin-top: 8px;
      color: var(--deep);
      font-size: 1.12rem;
      line-height: 1.42;
    }
    .research-proof p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 0.94rem;
      line-height: 1.72;
    }
    .research-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }
    .research-card {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      padding: 18px;
      display: grid;
      gap: 8px;
      align-content: start;
    }
    .research-card small {
      color: var(--accent);
      font-size: 0.875rem;
      font-weight: 800;
    }
    .research-card h3 {
      margin: 0;
      color: var(--deep);
      font-size: 1.04rem;
      line-height: 1.38;
    }
    .research-card p {
      margin: 0;
      color: var(--muted);
      font-size: 0.94rem;
      line-height: 1.72;
    }
    .research-card a {
      color: var(--accent);
      font-size: 0.86rem;
      font-weight: 800;
      text-decoration: underline;
      text-underline-offset: 3px;
    }
    .research-note {
      max-width: 820px;
      margin: 14px 0 0;
      color: #6F604B;
      font-size: 0.92rem;
      line-height: 1.7;
    }
    .trust-blog {
      max-width: 920px;
      margin: 0 auto;
    }
    .trust-note {
      display: grid;
      gap: 22px;
      padding: clamp(24px, 4vw, 42px);
      border: 1px solid rgba(139, 105, 20, 0.16);
      border-radius: 8px;
      background: var(--surface);
    }
    .trust-note-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      color: #6F604B;
      font-size: 0.86rem;
      font-weight: 800;
    }
    .trust-note-meta span {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 4px 10px;
      border: 1px solid rgba(139, 105, 20, 0.18);
      border-radius: 999px;
      background: #F5EDE0;
    }
    .trust-note h2 {
      max-width: 780px;
      font-size: clamp(1.65rem, 3vw, 2.35rem);
    }
    .trust-note-lede {
      max-width: 760px;
      margin: 0;
      color: #4A3B2A;
      font-size: clamp(1.05rem, 2vw, 1.22rem);
      font-weight: 800;
      line-height: 1.78;
    }
    .trust-note-body {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(240px, 0.52fr);
      gap: 24px;
      align-items: start;
    }
    .trust-note-body p {
      margin: 0 0 14px;
      color: #4A3B2A;
      font-size: 1.02rem;
      line-height: 1.9;
    }
    .trust-note-body p:last-child {
      margin-bottom: 0;
    }
    .trust-quote {
      margin: 18px 0;
      padding: 18px 20px;
      border-left: 4px solid var(--clay);
      background: var(--warm);
      color: #4A3B2A;
      font-size: 1.04rem;
      font-weight: 800;
      line-height: 1.75;
    }
    .trust-checklist {
      display: grid;
      gap: 12px;
      position: sticky;
      top: 92px;
    }
    .trust-checklist div {
      border-left: 4px solid var(--accent);
      background: #F5EDE0;
      padding: 12px 0 12px 14px;
    }
    .trust-checklist strong {
      display: block;
      color: var(--deep);
      font-size: 0.98rem;
      line-height: 1.35;
    }
    .trust-checklist span {
      display: block;
      margin-top: 5px;
      color: #6F604B;
      font-size: 0.9rem;
      line-height: 1.58;
    }
    .trust-note-links {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .story-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }
    .story-card {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      padding: 18px;
    }
    .story-card small {
      color: var(--accent);
      font-size: 0.875rem;
      font-weight: 800;
    }
    .story-card h3 {
      margin: 8px 0 8px;
      color: var(--deep);
      font-size: 1.08rem;
      line-height: 1.38;
    }
    .story-card p {
      margin: 0;
      color: var(--muted);
      font-size: 0.94rem;
      line-height: 1.72;
    }
    .video-points {
      margin-top: 12px;
    }
    .video-panel {
      display: grid;
      grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
      gap: 16px;
      align-items: stretch;
    }
    .detail-video-callout {
      display: grid;
      grid-template-columns: minmax(0, 1.12fr) minmax(260px, 0.88fr);
      gap: 16px;
      align-items: stretch;
      max-width: 900px;
      margin: 0 auto 22px;
      padding: 16px;
      border: 1px solid rgba(139, 105, 20, 0.2);
      border-radius: 8px;
      background: linear-gradient(135deg, var(--warm), #FFFDF8 58%, #F5EDE0);
    }
    .video-frame,
    .youtube-frame {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #231C10;
      overflow: hidden;
    }
    .video-frame video,
    .youtube-frame iframe {
      display: block;
      width: 100%;
      aspect-ratio: 16 / 9;
      border: 0;
      background: #231C10;
    }
    .video-copy {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      padding: 18px;
      display: grid;
      align-content: center;
      gap: 10px;
    }
    .video-copy b {
      color: var(--deep);
      font-size: 1.08rem;
    }
    .video-copy p {
      margin: 0;
      color: var(--muted);
    }
    .detail-video-copy {
      display: grid;
      align-content: center;
      gap: 10px;
      padding: 8px 4px;
    }
    .detail-video-copy small {
      color: var(--accent);
      font-size: 0.875rem;
      font-weight: 800;
    }
    .detail-video-copy b {
      color: var(--deep);
      font-size: clamp(1.14rem, 2vw, 1.5rem);
      line-height: 1.35;
    }
    .detail-video-copy p {
      margin: 0;
      color: var(--muted);
    }
    .detail-video-copy .button {
      width: fit-content;
      margin-top: 4px;
    }
    .internal-blog {
      display: grid;
      gap: 18px;
      max-width: 940px;
      margin: 0 auto;
    }
    .blog-article {
      border: 1px solid var(--line);
      border-top: 0;
      border-left: 4px solid var(--accent);
      border-radius: 8px;
      background: var(--surface);
      padding: clamp(18px, 3vw, 28px);
    }
    .blog-article small {
      color: var(--accent);
      font-size: 0.875rem;
      font-weight: 800;
      letter-spacing: 0;
    }
    .blog-article h3 {
      margin: 8px 0 12px;
      color: var(--deep);
      font-size: clamp(1.25rem, 2.6vw, 1.75rem);
      line-height: 1.28;
      letter-spacing: 0;
    }
    .blog-article p {
      margin: 10px 0 0;
      color: #4A3B2A;
      line-height: 1.82;
    }
    .blog-article .blog-points {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
      margin-top: 14px;
    }
    .blog-points div {
      border-left: 4px solid var(--accent);
      background: #F5EDE0;
      border-radius: 6px;
      padding: 12px 12px 12px 14px;
    }
    .blog-points b {
      display: block;
      color: var(--deep);
      margin-bottom: 4px;
    }
    .trust-panel {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 10px;
      margin-top: 14px;
    }
    .trust-panel div {
      border: 1px solid rgba(139, 105, 20, 0.18);
      border-radius: 8px;
      background: linear-gradient(180deg, #F5EDE0, #FFFDF8);
      padding: 14px;
    }
    .trust-panel strong {
      display: block;
      color: var(--deep);
      font-size: 1.05rem;
      line-height: 1.25;
    }
    .trust-panel span {
      display: block;
      color: #6F604B;
      font-size: 0.84rem;
      margin-top: 4px;
      line-height: 1.45;
    }
    .section-hub {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }
    .section-hub-card {
      display: grid;
      gap: 10px;
      align-content: start;
      min-height: 100%;
      border: 1px solid rgba(139, 105, 20, 0.2);
      border-radius: 8px;
      background: linear-gradient(180deg, var(--surface), #FDF8F0);
      padding: clamp(18px, 2.5vw, 24px);
      color: inherit;
      text-decoration: none;
      transition: transform var(--duration-press) var(--ease-out-ui),
        border-color var(--duration-ui) var(--ease-standard-ui);
    }
    @media (hover: hover) and (pointer: fine) {
      .section-hub-card:hover {
        border-color: rgba(139, 105, 20, 0.42);
      }
    }
    .section-hub-card small {
      color: var(--accent);
      font-weight: 800;
      font-size: 0.8rem;
    }
    .section-hub-card strong {
      color: var(--deep);
      font-size: clamp(1.12rem, 2vw, 1.42rem);
      line-height: 1.32;
    }
    .section-hub-card span {
      color: var(--muted);
      line-height: 1.72;
    }
    .map-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 12px;
    }
    .source-gallery {
      display: flex;
      flex-direction: column;
      gap: 22px;
      max-width: 820px;
      margin: 0 auto;
    }
    .source-gallery-item {
      display: block;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      overflow: hidden;
    }
    .source-gallery-item img {
      display: block;
      width: 100%;
      height: auto;
      object-fit: contain;
      background: #F5EDE0;
    }
    .source-gallery-note {
      max-width: 820px;
      margin: 14px auto 0;
      color: var(--muted);
      font-size: 0.9rem;
    }
    .section-head code {
      overflow-wrap: anywhere;
      word-break: break-word;
    }
    .proof-strip {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
      gap: 12px;
      align-items: stretch;
    }
    .proof-panel,
    .article-feature,
    .article-link-card {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
    }
    .proof-panel {
      padding: 18px;
    }
    .proof-panel strong {
      display: block;
      color: var(--deep);
      font-size: 1.04rem;
      margin-bottom: 6px;
    }
    .proof-panel p {
      margin: 0;
      color: var(--muted);
      font-size: 0.95rem;
    }
    .proof-points {
      display: grid;
      gap: 10px;
    }
    .proof-point {
      border-left: 4px solid var(--accent);
      padding: 10px 0 10px 12px;
    }
    .proof-point b {
      display: block;
      color: var(--deep);
      margin-bottom: 3px;
    }
    .article-feature {
      display: grid;
      grid-template-columns: 180px minmax(0, 1fr);
      overflow: hidden;
      min-height: 190px;
    }
    .article-feature-mark {
      display: grid;
      place-items: center;
      min-height: 190px;
      padding: 18px;
      color: #FFFDF8;
      background: var(--deep);
      font-weight: 800;
      line-height: 1.45;
      text-align: center;
    }
    .article-feature img {
      width: 100%;
      height: 100%;
      min-height: 190px;
      object-fit: cover;
      background: #F5EDE0;
    }
    .article-feature-body {
      padding: 18px;
      display: grid;
      gap: 8px;
      align-content: center;
    }
    .article-feature-body small,
    .article-link-card small {
      color: #6F604B;
      font-size: 0.875rem;
      font-weight: 800;
    }
    .article-feature-body b,
    .article-link-card b {
      color: var(--deep);
      font-size: 1.02rem;
      line-height: 1.35;
    }
    .article-feature-body p,
    .article-link-card p {
      margin: 0;
      color: var(--muted);
      font-size: 0.94rem;
    }
    .article-feature-body a,
    .article-link-card a {
      color: var(--accent);
      font-size: 0.86rem;
      font-weight: 800;
      text-decoration: underline;
      text-underline-offset: 3px;
    }
    .article-link-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin-top: 12px;
    }
    .article-link-card {
      padding: 16px;
      display: grid;
      gap: 8px;
    }
    .achievement-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }
    .achievement-card {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      padding: 16px;
      display: grid;
      gap: 8px;
    }
    .achievement-card small {
      color: var(--accent);
      font-size: 0.875rem;
      font-weight: 800;
    }
    .achievement-card b {
      color: var(--deep);
      font-size: 1.02rem;
      line-height: 1.35;
    }
    .achievement-card p {
      margin: 0;
      color: var(--muted);
      font-size: 0.94rem;
    }
    .achievement-card a {
      color: var(--accent);
      font-size: 0.86rem;
      font-weight: 800;
      text-decoration: underline;
      text-underline-offset: 3px;
    }
    .inquiry-board {
      display: grid;
      grid-template-columns: minmax(0, 0.86fr) minmax(320px, 1.14fr);
      gap: 16px;
      align-items: stretch;
    }
    .inquiry-panel,
    .inquiry-form {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      padding: clamp(18px, 3vw, 28px);
    }
    .inquiry-panel {
      display: grid;
      align-content: start;
      gap: 14px;
    }
    .inquiry-panel strong {
      color: var(--deep);
      font-size: clamp(1.2rem, 2.4vw, 1.65rem);
      line-height: 1.35;
    }
    .inquiry-panel p {
      margin: 0;
      color: var(--muted);
    }
    .inquiry-list {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .inquiry-list li {
      border-left: 4px solid var(--accent);
      background: #F5EDE0;
      padding: 10px 0 10px 12px;
      color: #4A3B2A;
      font-size: 0.94rem;
      line-height: 1.62;
    }
    .inquiry-form {
      display: grid;
      gap: 12px;
    }
    .inquiry-form label {
      display: grid;
      gap: 6px;
      color: var(--deep);
      font-size: 0.9rem;
      font-weight: 800;
    }
    .inquiry-form input,
    .inquiry-form select,
    .inquiry-form textarea {
      width: 100%;
      border: 1px solid #E8DCC8;
      border-radius: 8px;
      background: #FFFDF8;
      color: var(--ink);
      font: inherit;
      font-size: 1rem;
      padding: 11px 12px;
    }
    .inquiry-form textarea {
      min-height: 132px;
      resize: vertical;
    }
    .inquiry-form input:focus,
    .inquiry-form select:focus,
    .inquiry-form textarea:focus {
      outline: 3px solid rgba(139, 105, 20, 0.18);
      border-color: var(--accent);
    }
    .inquiry-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 4px;
    }
    .inquiry-output {
      min-height: 46px;
      margin: 0;
      border-left: 4px solid var(--clay);
      background: var(--warm);
      color: #4A3B2A;
      padding: 10px 12px;
      font-size: 0.88rem;
      line-height: 1.55;
    }
    /* lesson-texts:begin */
    .lesson-texts {
      padding: 70px 0;
      border-top: 1px solid rgba(139, 105, 20, 0.14);
      background:
        linear-gradient(180deg, rgba(248, 239, 228, 0.7), rgba(253, 248, 240, 0.92) 42%, rgba(245, 237, 224, 0.55));
      clip-path: inset(0 -100vmax);
    }
    .lesson-texts .section-inner {
      max-width: 960px;
      margin: 0 auto;
      min-width: 0;
    }
    .section-eyebrow {
      margin: 0 0 8px;
      color: var(--clay);
      font-size: 0.86rem;
      font-weight: 800;
      letter-spacing: 0;
    }
    .lesson-texts h2 {
      max-width: 760px;
      font-size: clamp(1.6rem, 3.4vw, 2.35rem);
    }
    .section-lead {
      max-width: 820px;
      margin: 14px 0 0;
      color: #4A3B2A;
      font-size: 1.05rem;
      line-height: 1.85;
    }
    .lesson-index {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 8px;
      margin: 28px 0 28px;
      padding: 14px;
      border: 1px solid rgba(160, 106, 32, 0.24);
      border-radius: 8px;
      background: rgba(253, 248, 240, 0.88);
    }
    .lesson-index a {
      display: flex;
      align-items: center;
      min-height: 44px;
      padding: 9px 12px;
      border-radius: 8px;
      background: rgba(245, 237, 224, 0.7);
      color: #4A3B2A;
      text-decoration: none;
      font-size: 0.92rem;
      font-weight: 800;
      line-height: 1.35;
      transition: transform var(--duration-press) var(--ease-out-ui),
        background-color var(--duration-ui) var(--ease-standard-ui),
        color var(--duration-ui) var(--ease-standard-ui);
    }
    .lesson-index a:active {
      transform: scale(0.97);
    }
    @media (hover: hover) and (pointer: fine) {
      .lesson-index a:hover {
        background: #E8DCC8;
        color: var(--deep);
      }
    }
    .student-writing-panel {
      margin: 28px 0 30px;
      padding: clamp(18px, 3vw, 28px);
      border: 1px solid rgba(139, 105, 20, 0.18);
      border-radius: 8px;
      background: rgba(253, 248, 240, 0.95);
    }
    .student-writing-panel > h3 {
      margin: 0;
      color: var(--deep);
      font-size: clamp(1.24rem, 2.4vw, 1.72rem);
      line-height: 1.35;
      letter-spacing: 0;
    }
    .student-writing-panel > p {
      margin: 10px 0 0;
      color: #4A3B2A;
      line-height: 1.8;
    }
    .student-writing-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
      margin-top: 18px;
    }
    .student-writing-card {
      display: grid;
      gap: 12px;
      min-width: 0;
      border: 1px solid rgba(139, 105, 20, 0.16);
      border-radius: 8px;
      background: #FFFDF8;
      padding: 16px;
    }
    .student-writing-card small {
      color: var(--clay);
      font-size: 0.875rem;
      font-weight: 800;
    }
    .student-writing-card h3 {
      margin: 0;
      color: var(--deep);
      font-size: 1.08rem;
      line-height: 1.42;
      letter-spacing: 0;
    }
    .writing-sample {
      display: grid;
      gap: 6px;
      border-left: 4px solid rgba(160, 106, 32, 0.45);
      background: #FDF8F0;
      border-radius: 6px;
      padding: 12px 12px 12px 14px;
    }
    .writing-sample.revised {
      border-left-color: var(--accent);
      background: #F5EDE0;
    }
    .writing-sample b {
      color: var(--deep);
      font-size: 0.9rem;
    }
    .writing-sample p,
    .student-writing-card > p {
      margin: 0;
      color: #4A3B2A;
      font-size: 0.95rem;
      line-height: 1.72;
    }
    .lesson-article-list {
      display: grid;
      gap: 26px;
      min-width: 0;
    }
    .lesson-article {
      border: 1px solid rgba(139, 105, 20, 0.18);
      border-radius: 8px;
      background: rgba(253, 248, 240, 0.94);
      padding: clamp(20px, 3.6vw, 42px);
      min-width: 0;
    }
    .lesson-article-header {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr);
      gap: 14px;
      align-items: start;
      margin-bottom: 18px;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(139, 105, 20, 0.15);
    }
    .lesson-number {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--deep);
      color: #FFFDF8;
      font-weight: 800;
      font-size: 0.9rem;
      line-height: 1;
    }
    .lesson-article-header h3 {
      margin: 0;
      color: var(--deep);
      font-size: clamp(1.22rem, 2.4vw, 1.78rem);
      line-height: 1.35;
      letter-spacing: 0;
    }
    .lesson-main-title {
      margin: 0 0 10px;
      color: #4A3B2A;
      font-size: clamp(1.1rem, 2vw, 1.4rem);
      line-height: 1.42;
    }
    .lesson-article h4 {
      margin: 26px 0 8px;
      color: var(--clay);
      font-size: 1rem;
      line-height: 1.5;
      letter-spacing: 0;
    }
    .lesson-article p {
      margin: 0 0 14px;
      color: #4A3B2A;
      font-size: 1.01rem;
      line-height: 1.92;
    }
    .lesson-article p + p {
      margin-top: 4px;
    }
    .lesson-table-wrap {
      width: 100%;
      max-width: 100%;
      min-width: 0;
      overflow-x: auto;
      margin: 14px 0 18px;
      border: 1px solid rgba(139, 105, 20, 0.18);
      border-radius: 8px;
      background: #FFFDF8;
    }
    .lesson-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 620px;
    }
    .lesson-table td {
      padding: 12px 14px;
      border-bottom: 1px solid rgba(139, 105, 20, 0.14);
      border-right: 1px solid rgba(139, 105, 20, 0.12);
      color: #4A3B2A;
      font-size: 0.94rem;
      line-height: 1.65;
      vertical-align: top;
    }
    .lesson-table tr:last-child td {
      border-bottom: 0;
    }
    .lesson-table td:last-child {
      border-right: 0;
    }
    @media (max-width: 760px) {
      .lesson-index {
        grid-template-columns: 1fr;
        padding: 10px;
      }
      .student-writing-grid {
        grid-template-columns: 1fr;
      }
      .lesson-index a {
        min-height: 40px;
      }
      .lesson-article {
        padding: 18px;
      }
      .lesson-article-header {
        gap: 10px;
      }
      .lesson-number {
        width: 36px;
        height: 36px;
        font-size: 0.82rem;
      }
      .lesson-table {
        min-width: 0;
        table-layout: fixed;
      }
      .lesson-table td {
        padding: 10px 9px;
        font-size: 0.86rem;
        line-height: 1.62;
        overflow-wrap: anywhere;
      }
    }
    /* lesson-texts:end */
    @media (max-width: 760px) {
      .topbar-inner,
      .hero,
      main {
        padding-left: 16px;
        padding-right: 16px;
      }
      .topbar-inner {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        padding-top: 10px;
        padding-bottom: 12px;
      }
      section[id] { scroll-margin-top: 132px; }
      .brand {
        font-size: 1.02rem;
        line-height: 1.35;
      }
      .nav {
        flex-wrap: nowrap;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 2px;
        scrollbar-width: thin;
        -webkit-overflow-scrolling: touch;
      }
      .nav a {
        flex: 0 0 auto;
        min-height: 44px;
        white-space: nowrap;
      }
      .hero,
      .grid,
      .contact,
      .blog-topic-grid,
      .blog-library,
      .proof-strip,
      .article-feature,
      .article-link-grid,
      .feature-story,
      .mentor-intro,
      .research-lead,
      .research-grid,
      .section-hub,
      .trust-note-body,
      .story-grid,
      .video-panel,
      .detail-video-callout,
      .reader-split,
      .source-gallery,
      .achievement-grid,
      .blog-article .blog-points,
      .trust-panel,
      .inquiry-board {
        grid-template-columns: 1fr;
      }
      .mentor-portrait-hero::after {
        display: none;
      }
      .mentor-portrait-hero img {
        aspect-ratio: 16 / 10;
        object-position: 67% center;
      }
      .mentor-portrait-copy {
        position: static;
        width: auto;
        padding: 22px;
        transform: none;
      }
      .mentor-portrait-copy h2 {
        font-size: 2.35rem;
      }
      .mentor-portrait-hero figcaption {
        position: static;
        display: block;
        padding: 0 22px 18px;
      }
      .registration-grid {
        grid-template-columns: 1fr;
      }
      .registration-card > div {
        grid-template-columns: 1fr;
        gap: 3px;
      }
      .article-feature img {
        height: 220px;
        min-height: 180px;
        max-height: 260px;
      }
      .article-feature-mark {
        min-height: 120px;
      }
      .source-gallery-item img {
        height: auto;
        max-height: none;
      }
      .hero {
        padding-top: 28px;
        gap: 22px;
      }
      .nav {
        display: flex;
        justify-content: flex-start;
        gap: 6px;
      }
      .nav a {
        width: auto;
        min-height: 44px;
        padding: 8px 11px;
        font-size: 0.82rem;
        line-height: 1.25;
      }
      .button {
        width: 100%;
      }
      .detail-video-callout {
        padding: 12px;
      }
      .trust-note {
        padding: 20px;
      }
      .trust-checklist {
        position: static;
      }
      .detail-video-copy .button {
        width: 100%;
      }
      .hero-actions {
        flex-direction: column;
      }
      .band {
        padding: 38px 0;
      }
      .section-head {
        padding-left: 14px;
        margin-bottom: 20px;
      }
      .blog-entry {
        padding-left: 44px;
      }
      .blog-entry::before {
        left: 16px;
      }
    }
  
/* Lesson fold accordion styling */
.lesson-fold > summary.lesson-fold-summary {
  cursor: pointer;
  list-style: none;
  background: #F5EDE0;
  border-radius: 12px;
  padding: 14px 18px;
  border: 1px solid rgba(74, 59, 42, 0.12);
  transition: transform var(--duration-press) var(--ease-out-ui),
    background-color var(--duration-ui) var(--ease-standard-ui),
    border-color var(--duration-ui) var(--ease-standard-ui);
  position: relative;
}

.lesson-fold > summary.lesson-fold-summary:active {
  transform: scale(0.99);
}

@media (hover: hover) and (pointer: fine) {
  .lesson-fold > summary.lesson-fold-summary:hover {
    background: #EDE1CB;
    border-color: rgba(139, 105, 20, 0.28);
  }
}

.lesson-fold > summary.lesson-fold-summary::after {
  content: "▸";
  position: absolute;
  right: 18px;
  color: #A06A20;
  font-size: 1.1em;
  transition: transform var(--duration-ui) var(--ease-out-ui);
}

.lesson-fold[open] > summary.lesson-fold-summary::after {
  transform: rotate(90deg);
}

.lesson-fold[open] > summary.lesson-fold-summary {
  margin-bottom: 8px;
}

::-webkit-details-marker {
  display: none;
}

.lesson-fold-summary .lesson-article-header {
  margin: 0;
}
    /* cta-band:begin */
    .cta-band {
      background: #F5EDE0;
      border: 1px solid rgba(139, 105, 20, 0.18);
      border-radius: 16px;
      padding: 30px 24px;
      margin: 40px auto 0;
      max-width: 860px;
      text-align: center;
    }
    .cta-band h3 {
      margin: 0;
      font-family: "Nanum Myeongjo", serif;
      font-size: 1.4rem;
      color: #4A3B2A;
    }
    .cta-band p {
      margin: 10px 0 0;
      color: #6F604B;
      font-size: 0.98rem;
    }
    .cta-band .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 18px;
    }
    /* cta-band:end */
    /* mobile-cta-bar:begin */
    .mobile-cta-bar { display: none; }
    .mcta-toast {
      position: fixed;
      left: 50%;
      bottom: 84px;
      transform: translateX(-50%) translateY(6px);
      background: #4A3B2A;
      color: #FFFDF8;
      padding: 9px 16px;
      border-radius: 999px;
      font-size: 0.85rem;
      opacity: 0;
      pointer-events: none;
      transition: opacity 200ms var(--ease-standard-ui),
        transform 200ms var(--ease-out-ui);
      z-index: 70;
    }
    .mcta-toast.show {
      opacity: 1;
      transform: translateX(-50%) translateY(0);
    }
    @media (max-width: 760px) {
      body { padding-bottom: calc(78px + env(safe-area-inset-bottom, 0px)); }
      .mobile-cta-bar {
        display: flex;
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 60;
        gap: 8px;
        padding: 10px 12px calc(10px + env(safe-area-inset-bottom, 0px));
        background: #4A3B2A;
      }
      .mobile-cta-bar .mcta {
        flex: 1;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 44px;
        border-radius: 10px;
        border: 1px solid rgba(255, 253, 248, 0.26);
        background: rgba(255, 253, 248, 0.08);
        color: #FFFDF8;
        font: inherit;
        font-size: 0.88rem;
        font-weight: 800;
        text-decoration: none;
        cursor: pointer;
        transition: transform var(--duration-press) var(--ease-out-ui),
          background-color var(--duration-ui) var(--ease-standard-ui),
          border-color var(--duration-ui) var(--ease-standard-ui);
      }
      @media (hover: hover) and (pointer: fine) {
        .mobile-cta-bar .mcta:hover { background: rgba(255, 253, 248, 0.16); }
      }
      .mobile-cta-bar .mcta-primary {
        background: #A06A20;
        border-color: #A06A20;
        color: #fff;
      }
    }
    /* mobile-cta-bar:end */
    /* responsive-extra:begin */
    @media (max-width: 760px) {
      .hero h1 { font-size: clamp(1.7rem, 7.4vw, 2.4rem); }
      .hero-stats {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
      }
      .hero-stats .stat { width: 100%; }
      main table,
      .band table {
        display: block;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
      }
      .lesson-fold > summary.lesson-fold-summary { padding: 12px 40px 12px 14px; }
      .cta-band { padding: 24px 16px; }
    }
    @media (min-width: 761px) and (max-width: 1024px) {
      .topbar-inner,
      .hero,
      main {
        padding-left: 24px;
        padding-right: 24px;
      }
      .grid,
      .research-grid,
      .story-grid,
      .section-hub,
      .achievement-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .trust-panel { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .hero h1 { font-size: clamp(1.9rem, 4.4vw, 3.4rem); }
    }
    /* responsive-extra:end */

    .gallery-transcript {
      max-width: 820px;
      margin: 20px auto 0;
    }

    .gallery-image-fold {
      margin: 0;
    }
    .gallery-image-fold[open] > .lesson-fold-summary {
      margin-bottom: 18px;
    }

    .gallery-transcript .gt-item + .gt-item {
      margin-top: 22px;
      padding-top: 18px;
      border-top: 1px solid rgba(74, 59, 42, 0.12);
    }

    .event27-detail,
    .minwoo-public-archive,
    #minwoo-awards {
      font-family: "Noto Sans KR", "Apple SD Gothic Neo", system-ui, sans-serif;
      font-weight: 300;
    }

    .event27-source {
      display: grid;
      gap: 18px;
      max-width: 860px;
      margin: 0 auto;
    }

    .event27-source > img,
    .event27-fallback img {
      display: block;
      width: 100%;
      height: auto;
      border-radius: 10px;
      background: #fff;
    }

    .event27-fallback {
      margin: 0;
    }

    .event27-fallback figcaption {
      margin-top: 10px;
      color: var(--muted);
      font-size: 0.9rem;
      font-weight: 300;
    }

    .event27-video {
      aspect-ratio: 16 / 9;
      min-height: 0;
      border-radius: 10px;
      overflow: hidden;
    }

    .event27-video iframe {
      width: 100%;
      height: 100%;
      border: 0;
    }

    .award-evidence-grid {
      display: grid;
      grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.15fr);
      gap: 26px;
      align-items: start;
    }

    .award-evidence-grid > img {
      display: block;
      width: 100%;
      height: auto;
      border-radius: 10px;
    }

    .award-list {
      display: grid;
      gap: 12px;
      margin: 0;
      padding-left: 1.5rem;
    }

    .award-list li {
      padding: 16px 18px;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--surface);
    }

    .award-list b,
    .award-list span,
    .award-list a {
      display: block;
    }

    .award-list b {
      font-weight: 700;
    }

    .award-list span {
      margin-top: 5px;
      color: var(--muted);
      font-weight: 300;
    }

    .award-list a {
      margin-top: 8px;
      color: var(--accent);
      font-weight: 500;
    }

    .archive-counts {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin: 0 0 30px;
    }

    .archive-counts div {
      padding: 18px;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--surface);
      text-align: center;
    }

    .archive-counts b,
    .archive-counts span {
      display: block;
    }

    .archive-counts b {
      font-size: 1.7rem;
      font-weight: 700;
      color: var(--accent);
    }

    .archive-counts span {
      color: var(--muted);
      font-size: 0.9rem;
      font-weight: 300;
    }

    .minwoo-public-archive > h3 {
      margin: 34px 0 14px;
    }

    .archive-list {
      columns: 2;
      column-gap: 34px;
      margin: 0;
      padding-left: 1.6rem;
    }

    .archive-list li {
      break-inside: avoid;
      margin: 0 0 12px;
      padding: 0 0 12px 4px;
      border-bottom: 1px solid rgba(74, 59, 42, 0.12);
    }

    .archive-list a {
      display: block;
      color: var(--ink);
      font-weight: 500;
      line-height: 1.55;
      text-decoration-thickness: 1px;
      text-underline-offset: 3px;
    }

    .archive-list span {
      display: block;
      margin-top: 3px;
      color: var(--muted);
      font-size: 0.82rem;
      font-weight: 300;
    }

    @media (max-width: 760px) {
      .award-evidence-grid,
      .archive-counts {
        grid-template-columns: 1fr;
      }
      .archive-list {
        columns: 1;
      }
      .event27-source {
        gap: 12px;
      }
    }

    :where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
      outline: 3px solid var(--accent);
      outline-offset: 3px;
    }

    :where(a, button, input, select, textarea, summary, [tabindex]):focus:not(:focus-visible) {
      outline: none;
    }

    .research-card,
    .story-card,
    .achievement-card,
    .student-writing-card,
    .article-feature,
    .contact-box,
    .trust-panel div {
    }

    .cta-band {
      border-color: rgba(139, 105, 20, 0.24);
    }

    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      .skip-link { transition: none; }
      .nav a,
      .button,
      .section-hub-card,
      .lesson-index a,
      .lesson-fold > summary.lesson-fold-summary,
      .mcta-toast,
      .mobile-cta-bar .mcta {
        transition-property: opacity, background-color, border-color, color;
        transition-duration: 120ms;
        transition-timing-function: var(--ease-standard-ui);
      }
      .mcta-toast,
      .mcta-toast.show {
        transform: translateX(-50%);
      }
      .nav a:active,
      .button:active,
      .section-hub-card:active,
      .lesson-index a:active,
      .lesson-fold > summary.lesson-fold-summary:active,
      .mobile-cta-bar .mcta:active {
        transform: none;
      }
    }

    /* phase9 about/archive additions */
    .topbar-inner {
      max-width: 1180px;
      min-height: 64px;
    }

    .nav {
      flex-wrap: nowrap;
      overflow-x: auto;
      scrollbar-width: thin;
      -webkit-overflow-scrolling: touch;
    }

    .nav a {
      min-height: 44px;
      white-space: nowrap;
    }

    .about-hero,
    .archive-hero {
      min-height: min(760px, calc(100dvh - 72px));
      align-content: center;
    }

    .about-chip-row .stat b {
      font-size: 1.42rem;
    }

    .director-story {
      scroll-margin-top: 112px;
    }

    .method-grid .story-card {
      min-height: 100%;
    }

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

    .photo-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
    }

    .photo-card {
      margin: 0;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--surface);
      overflow: hidden;
    }

    .photo-card img {
      display: block;
      width: 100%;
      height: auto;
      aspect-ratio: 4 / 3;
      object-fit: cover;
      background: var(--surface-alt);
    }

    .photo-card figcaption {
      padding: 12px 14px 14px;
      color: var(--muted);
      font-size: 0.9rem;
      line-height: 1.58;
    }

    .fee-scroll-hint {
      display: inline-flex;
      align-items: center;
      min-height: 36px;
      margin: 0 0 10px;
      padding: 7px 11px;
      border: 1px solid rgba(139, 105, 20, 0.22);
      border-radius: 8px;
      background: #FFFDF8;
      color: var(--muted);
      font-size: 0.9rem;
      font-weight: 700;
    }

    .fee-table-wrap {
      position: relative;
      scrollbar-width: thin;
      scrollbar-color: rgba(139, 105, 20, 0.55) rgba(245, 237, 224, 0.85);
    }

    .fee-table-wrap::after {
      content: "";
      position: sticky;
      right: 0;
      float: right;
      width: 34px;
      height: 1px;
      margin-top: -1px;
      pointer-events: none;
    }

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

    .archive-stubs,
    .archive-anchor-stub {
      position: absolute;
      width: 1px;
      height: 1px;
      overflow: hidden;
      clip: rect(0 0 0 0);
      clip-path: inset(50%);
      white-space: nowrap;
    }

    .archive-tools {
      display: grid;
      gap: 8px;
      max-width: 560px;
      margin-top: 24px;
    }

    .archive-tools label {
      color: var(--deep);
      font-size: 0.9rem;
      font-weight: 800;
    }

    .archive-tools input {
      width: 100%;
      min-height: 48px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #FFFDF8;
      color: var(--ink);
      font: inherit;
      font-size: 1rem;
      padding: 12px 14px;
    }

    .archive-tools input:focus {
      border-color: var(--accent);
      outline: 3px solid rgba(139, 105, 20, 0.18);
      outline-offset: 2px;
    }

    .archive-tools p {
      margin: 0;
      color: var(--muted);
      font-size: 0.9rem;
    }

    .archive-category-nav {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 18px;
    }

    .archive-category-nav a {
      display: inline-flex;
      align-items: center;
      min-height: 44px;
      padding: 8px 13px;
      border: 1px solid rgba(139, 105, 20, 0.24);
      border-radius: 8px;
      background: rgba(255, 253, 248, 0.86);
      color: var(--deep);
      font-weight: 800;
      text-decoration: none;
    }

    [hidden] {
      display: none !important;
    }

    .archive-label-band {
      padding-top: 34px;
      padding-bottom: 34px;
    }

    .archive-final-note {
      padding-bottom: 120px;
    }

    .consult-checklist {
      margin-top: 14px;
      padding: 14px 16px;
      border: 1px solid rgba(139, 105, 20, 0.18);
      border-radius: 8px;
      background: #FFFDF8;
    }

    .consult-checklist strong {
      display: block;
      color: var(--deep);
      font-size: 1rem;
    }

    .consult-checklist p {
      margin: 8px 0 0;
      color: var(--muted);
      font-size: 0.94rem;
      line-height: 1.66;
    }

    .consult-checklist ul {
      display: grid;
      gap: 8px;
      margin: 10px 0 0;
      padding-left: 1.1rem;
      color: #4A3B2A;
    }

    .consult-checklist li {
      font-size: 0.94rem;
      line-height: 1.6;
    }

    .cta-band h2 {
      margin: 0;
      color: #4A3B2A;
      font-size: clamp(1.42rem, 3vw, 2rem);
      line-height: 1.35;
    }

    @media (max-width: 1180px) {
      .proof-links,
      .photo-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 760px) {
      .topbar {
        top: 0;
      }

      .topbar-inner {
        min-height: auto;
      }

      .about-hero,
      .archive-hero {
        min-height: auto;
        padding-top: 22px;
        gap: 18px;
      }

      .proof-links,
      .photo-grid,
      .archive-bridge {
        grid-template-columns: 1fr;
      }

      .about-hero .lead,
      .archive-hero .lead {
        margin-top: 12px;
        font-size: 1rem;
        line-height: 1.68;
      }

      .about-hero .hero-figure,
      .archive-hero .hero-figure {
        display: none;
      }

      .about-chip-row {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 8px;
      }

      .about-chip-row .stat {
        min-width: 0;
        padding: 10px 8px;
        text-align: center;
      }

      .about-chip-row .stat b {
        font-size: 1rem;
      }

      .about-chip-row .stat span {
        font-size: 0.74rem;
        line-height: 1.35;
      }

      .photo-card img {
        aspect-ratio: 16 / 10;
      }

      .fee-scroll-hint {
        display: flex;
        width: 100%;
        justify-content: space-between;
      }

      .fee-scroll-hint::after {
        content: "→";
        color: var(--accent);
        font-weight: 900;
      }

      .fee-table-wrap .fee-table {
        display: table;
        min-width: 650px;
      }

      .archive-category-nav a {
        flex: 1 1 auto;
        justify-content: center;
      }
    }

    /* phase9.5 - one editorial language for the profile and archive */
    :root {
      --line: #D8C7AB;
      --surface: #FFFDF8;
      --shadow-card: 0 1px 2px rgba(44, 36, 22, .06);
      --shadow-card-hover: 0 10px 28px rgba(44, 36, 22, .12);
    }

    body.about-page,
    body.archive-page {
      background-color: var(--paper);
      background-image: radial-gradient(rgba(44, 36, 22, .035) .65px, transparent .65px);
      background-size: 10px 10px;
      font-size: 17px;
      line-height: 1.75;
    }

    .topbar {
      isolation: isolate;
      border-bottom: 0;
      background: rgba(253, 248, 240, .97);
      backdrop-filter: none;
    }

    .topbar::before,
    .topbar::after {
      content: "";
      position: absolute;
      right: 0;
      left: 0;
      pointer-events: none;
    }

    .topbar::before {
      top: 0;
      height: 1px;
      background: var(--line);
    }

    .topbar::after {
      bottom: 0;
      height: 1px;
      background: var(--line);
    }

    .topbar-inner {
      position: relative;
      z-index: 1;
      max-width: 1220px;
      min-height: 72px;
      padding: 12px 20px 8px;
    }

    .brand {
      font-family: "Nanum Myeongjo", "Noto Serif KR", serif;
      font-size: 1.08rem;
      letter-spacing: -.035em;
    }

    .nav { gap: 0; }

    .nav a {
      min-height: 40px;
      padding: 7px 10px;
      border: 0;
      border-radius: 0;
      background: transparent;
      color: var(--muted);
      font-size: .88rem;
      font-weight: 600;
    }

    .nav a + a { border-left: 1px solid var(--line); }

    @media (hover: hover) and (pointer: fine) {
      .nav a:hover {
        color: var(--accent);
        background: transparent;
      }
    }

    .hero {
      position: relative;
      max-width: 1220px;
      min-height: min(740px, calc(100dvh - 72px));
      padding: clamp(58px, 8vw, 108px) 20px clamp(52px, 7vw, 92px);
      grid-template-columns: minmax(0, 1.18fr) minmax(320px, .82fr);
      gap: clamp(34px, 6vw, 86px);
    }

    .hero::before {
      content: "";
      position: absolute;
      top: 24px;
      right: 20px;
      width: 48px;
      height: 48px;
      border-top: 3px solid var(--ink);
      border-right: 3px solid var(--ink);
      pointer-events: none;
    }

    .eyebrow,
    .section-eyebrow {
      color: var(--accent);
      font-size: .78rem;
      font-weight: 800;
      letter-spacing: .04em;
      text-transform: none;
    }

    h1 {
      max-width: 760px;
      font-size: clamp(3rem, 6vw, 5.15rem);
      line-height: 1.12;
      letter-spacing: -.07em;
      text-wrap: balance;
    }

    h2 {
      line-height: 1.22;
      letter-spacing: -.045em;
    }

    .lead {
      max-width: 41em;
      color: var(--ink);
      font-size: 1.1rem;
      line-height: 1.8;
    }

    .button {
      min-height: 46px;
      border-radius: 0;
      border-color: var(--ink);
      background: transparent;
    }

    .button.primary {
      border-color: var(--accent);
      background: var(--accent);
      color: #FFFDF8;
    }

    @media (hover: hover) and (pointer: fine) {
      .button:hover {
        background: var(--surface-alt);
        border-color: var(--accent);
      }

      .button.primary:hover {
        background: var(--deep);
        border-color: var(--deep);
      }
    }

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

    .about-chip-row {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      max-width: 570px;
      gap: 0;
      margin-top: 38px;
      border-top: 3px solid var(--ink);
      border-bottom: 1px solid var(--line);
    }

    .about-chip-row .stat {
      min-width: 0;
      padding: 13px 14px 14px;
      border: 0;
      border-radius: 0;
      background: transparent;
    }

    .about-chip-row .stat + .stat { border-left: 1px solid var(--line); }

    .about-chip-row .stat b {
      color: var(--accent);
      font-family: "Nanum Myeongjo", "Noto Serif KR", serif;
      font-size: 1.5rem;
    }

    .hero-figure,
    .editorial-hero-figure {
      position: relative;
      overflow: visible;
      border: 0;
      border-radius: 0;
      background: transparent;
    }

    .hero-figure::before,
    .hero-figure::after {
      content: "";
      position: absolute;
      z-index: 1;
      width: 34px;
      height: 34px;
      pointer-events: none;
    }

    .hero-figure::before {
      top: -9px;
      left: -9px;
      border-top: 3px solid var(--accent);
      border-left: 3px solid var(--accent);
    }

    .hero-figure::after {
      right: -9px;
      bottom: 34px;
      border-right: 3px solid var(--ink);
      border-bottom: 3px solid var(--ink);
    }

    .hero-figure img {
      aspect-ratio: 4 / 5;
      border: 1px solid var(--ink);
      filter: sepia(.12) saturate(.84) contrast(1.02);
    }

    .hero-figure figcaption {
      padding: 11px 0 0;
      border-top: 1px solid var(--line);
      background: transparent;
      color: var(--muted);
      font-size: .84rem;
    }

    .archive-hero .hero-figure img { aspect-ratio: 4 / 3; }
    .about-hero .hero-figure img { aspect-ratio: 4 / 3; }

    main {
      max-width: 1220px;
      padding-right: 20px;
      padding-left: 20px;
    }

    .band {
      padding: clamp(66px, 9vw, 124px) 0;
      border-top: 3px solid var(--ink);
    }

    .band:nth-of-type(2n + 3) {
      background: transparent;
      clip-path: none;
    }

    .section-head {
      max-width: 760px;
      padding-left: 0;
      border-left: 0;
    }

    .section-head::before,
    .chronology-heading::before {
      content: "";
      display: block;
      width: 48px;
      height: 3px;
      margin-bottom: 16px;
      background: var(--accent);
    }

    .section-head p { max-width: var(--reading-measure); }

    .director-story {
      display: grid;
      grid-template-columns: minmax(200px, .78fr) minmax(0, 1.3fr) minmax(190px, .68fr);
      gap: clamp(24px, 4vw, 54px);
      align-items: start;
      max-width: none;
      margin: 0;
      padding: 0;
      border: 0;
      border-top: 1px solid var(--line);
      border-radius: 0;
      background: transparent;
    }

    .director-portrait {
      position: relative;
      margin: 0;
      padding-top: 16px;
    }

    .director-portrait::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 38px;
      height: 38px;
      border-top: 3px solid var(--accent);
      border-left: 3px solid var(--accent);
    }

    .director-portrait img {
      display: block;
      width: 100%;
      aspect-ratio: 4 / 5;
      object-fit: cover;
      object-position: 78% center;
      border: 1px solid var(--ink);
      filter: sepia(.1) saturate(.86);
    }

    .director-portrait figcaption {
      margin-top: 9px;
      padding-top: 9px;
      border-top: 1px solid var(--line);
      color: var(--muted);
      font-size: .84rem;
    }

    .director-copy { padding-top: clamp(22px, 3vw, 36px); }

    .mentor-intro h2 {
      max-width: 14em;
      margin: 4px 0 22px;
      font-size: clamp(2rem, 3.4vw, 3.3rem);
    }

    .mentor-intro p {
      color: var(--ink);
      font-size: 1.04rem;
      line-height: 1.9;
    }

    .director-copy .dropcap::first-letter {
      float: left;
      margin: .06em .11em -.08em 0;
      color: var(--accent);
      font-family: "Nanum Myeongjo", "Noto Serif KR", serif;
      font-size: 4.25em;
      font-weight: 800;
      line-height: .78;
    }

    .mentor-facts {
      gap: 0;
      padding-top: clamp(22px, 3vw, 36px);
      border-top: 3px solid var(--accent);
    }

    .mentor-facts div {
      padding: 15px 0;
      border-top: 1px solid var(--line);
      border-left: 0;
      background: transparent;
    }

    .mentor-facts div:first-child { border-top: 0; }
    .mentor-facts dt { color: var(--accent); font-family: "Nanum Myeongjo", "Noto Serif KR", serif; font-weight: 800; }
    .mentor-facts dd { margin: 5px 0 0; }

    .chronology-band {
      display: grid;
      grid-template-columns: minmax(210px, .46fr) minmax(0, 1.54fr);
      gap: clamp(36px, 8vw, 126px);
      align-items: start;
    }

    .chronology-heading { position: sticky; top: 116px; }
    .chronology-heading .section-eyebrow { margin-bottom: 12px; }
    .chronology-heading h2 { font-size: clamp(2rem, 3.5vw, 3.35rem); }

    .chronology-list {
      position: relative;
      display: grid;
      gap: 0;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .chronology-list::before {
      content: "";
      position: absolute;
      top: 14px;
      bottom: 14px;
      left: 103px;
      width: 1px;
      background: var(--line);
    }

    .chronology-list li {
      position: relative;
      display: grid;
      grid-template-columns: 82px minmax(0, 1fr);
      gap: 44px;
      padding: 0 0 32px;
    }

    .chronology-list li::after {
      content: "";
      position: absolute;
      top: 10px;
      left: 98px;
      width: 11px;
      height: 11px;
      border: 2px solid var(--accent);
      background: var(--paper);
    }

    .chronology-list time {
      position: relative;
      z-index: 1;
      color: var(--accent);
      font-family: "Nanum Myeongjo", "Noto Serif KR", serif;
      font-size: 1.13rem;
      font-weight: 800;
      line-height: 1.3;
      text-align: right;
      font-variant-numeric: tabular-nums;
    }

    .chronology-list h3 {
      margin: 0;
      color: var(--ink);
      font-size: 1.25rem;
    }

    .chronology-list p {
      margin: 8px 0 0;
      color: var(--muted);
      font-size: .96rem;
    }

    .method-grid {
      grid-template-columns: minmax(0, 1.25fr) minmax(0, .9fr) minmax(0, .85fr);
      gap: 0;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .method-grid .story-card {
      padding: 26px 28px 28px;
      border: 0;
      border-radius: 0;
      background: transparent;
    }

    .method-grid .story-card + .story-card { border-left: 1px solid var(--line); }
    .method-grid .story-card small { color: var(--accent); }

    .proof-links {
      grid-template-columns: repeat(6, minmax(0, 1fr));
      gap: 0;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .proof-links .research-card {
      display: flex;
      min-height: 240px;
      padding: 22px 20px;
      border: 0;
      border-radius: 0;
      background: transparent;
      flex-direction: column;
    }

    .proof-links .research-card:nth-child(1),
    .proof-links .research-card:nth-child(2) { grid-column: span 3; }
    .proof-links .research-card:nth-child(n + 3) { grid-column: span 2; }
    .proof-links .research-card + .research-card { border-left: 1px solid var(--line); }
    .proof-links .research-card:nth-child(3) { border-left: 0; }
    .proof-links .research-card small { color: var(--accent); }
    .proof-links .research-card a { margin-top: auto; color: var(--accent); font-weight: 800; text-underline-offset: 4px; }

    .photo-grid {
      grid-template-columns: repeat(12, minmax(0, 1fr));
      gap: 20px;
    }

    .photo-card {
      overflow: visible;
      border: 0;
      border-radius: 0;
      background: transparent;
    }

    .photo-card:nth-child(1) { grid-column: span 7; }
    .photo-card:nth-child(2) { grid-column: span 5; padding-top: 54px; }
    .photo-card:nth-child(3) { grid-column: 6 / span 7; margin-top: -46px; }

    .photo-card img {
      aspect-ratio: 4 / 3;
      border: 1px solid var(--ink);
      filter: sepia(.1) saturate(.88);
      background: transparent;
    }

    .photo-card:nth-child(3) img { aspect-ratio: 16 / 7; object-position: top; }

    .photo-card figcaption {
      padding: 10px 0 0;
      border-top: 1px solid var(--line);
      background: transparent;
      color: var(--muted);
      font-size: .84rem;
    }

    .registration-grid,
    .inquiry-board,
    .contact {
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .registration-card,
    .fee-table-wrap,
    .inquiry-panel,
    .inquiry-form,
    .contact-box,
    .cta-band {
      border-radius: 0;
    }

    .fee-table-wrap { background: var(--surface); }

    .archive-hero h1 { color: var(--accent); }

    .archive-hero .archive-category-nav {
      gap: 0;
      margin-top: 28px;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .archive-category-nav a {
      min-height: 46px;
      padding: 10px 14px;
      border: 0;
      border-radius: 0;
      background: transparent;
      color: var(--ink);
      font-size: .92rem;
      font-weight: 700;
    }

    .archive-category-nav a + a { border-left: 1px solid var(--line); }

    .archive-table-of-contents {
      padding-top: 48px;
      padding-bottom: 48px;
    }

    .archive-table-of-contents .section-head { max-width: 600px; }

    .archive-anchor-alias {
      display: block;
      height: 0;
      scroll-margin-top: 100px;
    }

    .lesson-texts {
      padding: clamp(66px, 9vw, 116px) 0;
      border-top: 3px solid var(--ink);
      background: transparent;
      clip-path: none;
    }

    .lesson-texts .section-inner { max-width: none; }

    .lesson-texts h2 {
      max-width: 680px;
      font-size: clamp(2rem, 4.1vw, 3.65rem);
    }

    .section-lead { max-width: 47em; color: var(--muted); }

    .lesson-index {
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 0 34px;
      margin: 38px 0 66px;
      padding: 0;
      border: 0;
      border-top: 3px solid var(--ink);
      border-radius: 0;
      background: transparent;
      counter-reset: lesson-index;
    }

    .lesson-index a {
      position: relative;
      min-height: 0;
      padding: 17px 8px 17px 48px;
      border-bottom: 1px solid var(--line);
      border-radius: 0;
      background: transparent;
      color: var(--ink);
      font-family: "Nanum Myeongjo", "Noto Serif KR", serif;
      font-size: 1.07rem;
      font-weight: 700;
      line-height: 1.55;
      counter-increment: lesson-index;
    }

    .lesson-index a::before {
      content: "제" counter(lesson-index) "편";
      position: absolute;
      top: 19px;
      left: 0;
      color: var(--accent);
      font-family: "Noto Sans KR", sans-serif;
      font-size: .76rem;
      font-weight: 800;
      line-height: 1.35;
    }

    @media (hover: hover) and (pointer: fine) {
      .lesson-index a:hover { background: var(--surface-alt); color: var(--accent); }
    }

    .student-writing-panel {
      padding: 0 0 30px;
      border: 0;
      border-bottom: 3px solid var(--ink);
      border-radius: 0;
      background: transparent;
    }

    .student-writing-grid { gap: 0; border-top: 1px solid var(--line); }
    .student-writing-card {
      padding: 22px 20px;
      border: 0;
      border-radius: 0;
      border-bottom: 1px solid var(--line);
      background: transparent;
    }
    .student-writing-card:nth-child(odd) { border-right: 1px solid var(--line); }
    .writing-sample { border-radius: 0; background: var(--surface-alt); }

    .lesson-article-list { gap: 0; }

    .lesson-article {
      padding: clamp(28px, 5vw, 62px) 0;
      border: 0;
      border-bottom: 3px solid var(--ink);
      border-radius: 0;
      background: transparent;
    }

    .lesson-fold > summary.lesson-fold-summary {
      padding: 0;
      border: 0;
      border-radius: 0;
      background: transparent;
    }

    .lesson-fold > summary.lesson-fold-summary::after {
      right: 0;
      width: 30px;
      height: 30px;
      border: 1px solid var(--ink);
      border-radius: 0;
      background: var(--surface);
      color: var(--accent);
    }

    .lesson-article-header {
      grid-template-columns: 92px minmax(0, 1fr);
      gap: 22px;
      margin-bottom: 24px;
      padding: 0 44px 22px 0;
      border-bottom: 1px solid var(--line);
    }

    .lesson-number {
      display: block;
      width: auto;
      height: auto;
      padding-top: 4px;
      border-radius: 0;
      background: transparent;
      color: var(--accent);
      font-family: "Nanum Myeongjo", "Noto Serif KR", serif;
      font-size: 1.7rem;
      font-weight: 800;
      line-height: 1;
      font-variant-numeric: tabular-nums;
    }

    .lesson-article-header h3 { font-size: clamp(1.55rem, 3vw, 2.5rem); }
    .lesson-main-title { color: var(--accent); }

    .minwoo-public-archive > h3,
    .archive-final-note h2 { font-size: clamp(1.65rem, 3vw, 2.5rem); }

    .archive-list {
      columns: 2;
      column-gap: 52px;
      padding-left: 1.35rem;
    }

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

    .archive-final-note { padding-bottom: 150px; }

    @media (max-width: 860px) {
      .director-story,
      .chronology-band { grid-template-columns: minmax(0, 1fr); }

      .director-portrait {
        width: min(320px, 60%);
      }

      .chronology-heading { position: static; }

      .proof-links .research-card:nth-child(n) { grid-column: span 3; }
      .proof-links .research-card:nth-child(3) { border-left: 1px solid var(--line); }
      .proof-links .research-card:nth-child(odd) { border-left: 0; }
      .photo-card:nth-child(1) { grid-column: span 7; }
      .photo-card:nth-child(2) { grid-column: span 5; }
      .photo-card:nth-child(3) { grid-column: span 7; margin-top: -24px; }
    }

    @media (max-width: 760px) {
      body.about-page,
      body.archive-page { font-size: 16px; }

      .topbar-inner {
        min-height: 64px;
        padding: 11px 16px 7px;
      }

      .nav { gap: 0; }
      .nav a { min-height: 44px; padding: 7px 9px; font-size: .82rem; }

      .hero {
        min-height: 0;
        padding: 45px 20px 54px;
        grid-template-columns: minmax(0, 1fr);
        gap: 32px;
      }

      .hero::before { top: 18px; right: 20px; width: 32px; height: 32px; }
      h1 { font-size: clamp(2.75rem, 12.8vw, 3.25rem); line-height: 1.14; }
      .lead { font-size: 1rem; }
      .hero-figure,
      .about-hero .hero-figure,
      .archive-hero .hero-figure { display: block; }
      .hero-figure img,
      .archive-hero .hero-figure img { aspect-ratio: 16 / 10; }

      .about-chip-row { margin-top: 30px; }
      .about-chip-row .stat { padding: 11px 8px; }
      .about-chip-row .stat b { font-size: 1.1rem; }
      .about-chip-row .stat span { font-size: .72rem; }

      main { padding-right: 20px; padding-left: 20px; }
      .band { padding: 64px 0; }
      .director-portrait { width: min(270px, 76%); }
      .director-copy { padding-top: 0; }
      .mentor-intro h2 { font-size: 2rem; }
      .mentor-actions { display: grid; }

      .chronology-list::before { left: 70px; }
      .chronology-list li { grid-template-columns: 54px minmax(0, 1fr); gap: 32px; padding-bottom: 28px; }
      .chronology-list li::after { left: 65px; }
      .chronology-list time { font-size: .83rem; }
      .chronology-list h3 { font-size: 1.13rem; }

      .method-grid,
      .proof-links,
      .student-writing-grid { grid-template-columns: minmax(0, 1fr); }
      .method-grid .story-card + .story-card { border-top: 1px solid var(--line); border-left: 0; }
      .method-grid .story-card { padding: 22px 0; }
      .proof-links .research-card:nth-child(n) { grid-column: auto; min-height: 0; padding: 22px 0; }
      .proof-links .research-card + .research-card,
      .proof-links .research-card:nth-child(3) { border-top: 1px solid var(--line); border-left: 0; }

      .photo-grid { grid-template-columns: minmax(0, 1fr); gap: 30px; }
      .photo-card:nth-child(n) { grid-column: auto; margin-top: 0; padding-top: 0; }
      .photo-card:nth-child(n) img { aspect-ratio: 16 / 10; }
      .photo-card:nth-child(3) img { aspect-ratio: 4 / 3; object-position: top; }

      .archive-category-nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
      .archive-category-nav a { min-width: 0; padding: 10px 7px; text-align: center; font-size: .78rem; }
      .archive-category-nav a + a { border-left: 1px solid var(--line); }
      .archive-hero .archive-category-nav { display: grid; }

      .lesson-index { grid-template-columns: minmax(0, 1fr); margin-bottom: 48px; }
      .lesson-index a { padding-top: 15px; padding-bottom: 15px; font-size: 1rem; }
      .lesson-index a::before { top: 17px; }
      .student-writing-card:nth-child(odd) { border-right: 0; }
      .student-writing-card { padding: 20px 0; }

      .lesson-article { padding: 32px 0; }
      .lesson-article-header { grid-template-columns: 62px minmax(0, 1fr); gap: 12px; padding-right: 38px; }
      .lesson-number { font-size: 1.25rem; }
      .lesson-article-header h3 { font-size: 1.45rem; }
      .lesson-article p { font-size: 1rem; line-height: 1.86; }
      .archive-list { columns: 1; }
    }

    @media (prefers-reduced-motion: reduce) {
      .nav a,
      .button,
      .lesson-index a { transition: none; }
    }

    /* phase9.5 refinement R2–R10 */
    body.about-page,
    body.archive-page {
      --ease-editorial: cubic-bezier(0.22, 1, 0.36, 1);
      --ease-out-ui: var(--ease-editorial);
      --ease-in-out-ui: var(--ease-editorial);
      --ease-standard-ui: var(--ease-editorial);
      --duration-press: 240ms;
      --duration-ui: 240ms;
      font-variant-numeric: tabular-nums;
    }

    h1 { font-weight: 800; letter-spacing: -0.045em; }
    h2 { font-weight: 700; letter-spacing: -0.03em; }

    :is(.eyebrow, .section-eyebrow, .guide-kicker, .issue-label, .section-label) {
      color: #6B4F0E;
      font-family: "Noto Sans KR", "Apple SD Gothic Neo", system-ui, sans-serif;
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0.04em;
      text-transform: none;
    }

    :is(.eyebrow, .section-eyebrow, .guide-kicker, .issue-label, .section-label)::before { content: '· '; }

    img[loading="lazy"] { background-color: #F5EDE0; }
    ::selection { background: #8B6914; color: #FDF8F0; }

    ::-webkit-scrollbar { width: 10px; height: 10px; }
    ::-webkit-scrollbar-track { background: transparent; }
    ::-webkit-scrollbar-thumb { background: #D8C7AB; }
    ::-webkit-scrollbar-thumb:hover { background: #8B6914; }

    :focus-visible { outline: 3px solid #8B6914; outline-offset: 2px; }
    a { text-underline-offset: 4px; }
    a:hover { text-decoration-thickness: 2px; }

    .topbar::before {
      height: 6px;
      border-bottom: 5px solid var(--ink);
    }

    .hero-figure.editorial-hero-figure {
      box-shadow: 0 24px 48px rgba(44,36,22,0.10);
    }

    @media (hover: hover) and (pointer: fine) {
      :is(.button, .nav a, .section-hub-card, .lesson-index a):hover {
        border-top: 3px solid #8B6914;
        background: #F5EDE0;
      }
    }

    .director-copy .dropcap { font-weight: 400; }

    .hero-figure figcaption,
    .director-portrait figcaption,
    .registration-card > div,
    .fee-table th,
    .fee-table td,
    .fee-note,
    .site-footer,
    .footer {
      border-color: rgba(44,36,22,0.08);
    }

    .about-chip-row .stat b .stat-unit {
      display: inline;
      color: #6F604B;
      font-size: 55%;
      font-weight: 700;
      letter-spacing: 0;
      margin: 0;
    }

    /* STRUCTURE-95: chapter navigation and editorial containers */
    :root {
      --band-lg: 96px;
      --band-md: 64px;
      --reading-measure: 680px;
    }

    .page-toc {
      display: flex;
      align-items: center;
      gap: 0;
      max-width: 1220px;
      margin: 0 auto;
      padding: 0 20px;
      overflow-x: auto;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      background: var(--paper);
      white-space: nowrap;
      scrollbar-width: thin;
    }
    .page-toc > span,
    .page-toc a {
      display: inline-flex;
      align-items: center;
      min-height: 48px;
      padding: 0 15px;
      color: var(--ink);
      font-size: .86rem;
      font-weight: 700;
      text-decoration: none;
    }
    .page-toc > span { color: var(--accent); font-family: "Nanum Myeongjo", "Noto Serif KR", serif; }
    .page-toc a { border-left: 1px solid var(--line); }
    .page-toc a:hover, .page-toc a:focus-visible,
    .page-toc a[aria-current] { color: var(--accent); background: var(--warm); }

    .about-page main > .band { padding-block: var(--band-lg); }
    .chapter-subsection { margin-top: var(--band-md); }
    .section-head > .section-eyebrow { margin: 0 0 12px; }
    .about-page .section-head,
    .about-page .section-head > p:last-child,
    .about-page .director-copy > p:not(.eyebrow),
    .about-page .record-card p,
    .about-page .lead,
    .about-page .contact-box > p,
    .about-page .consult-checklist p,
    .about-page .fee-note,
    .about-page .inquiry-panel p,
    .about-page .faq-list p,
    .about-page .section-hub-card span { max-width: var(--reading-measure); }

    /* STRUCTURE-95: prose uses only lead / body / caption sizes. */
    .about-page main p { font-size: 17px; line-height: 1.8; }
    .about-page .lead,
    .about-page .section-head > p:last-child { font-size: 19px; line-height: 1.8; }
    .about-page :is(.director-copy > p:not(.eyebrow), .record-card p, .contact-box > p, .consult-checklist p, .fee-note, .inquiry-panel p, .faq-list p, .section-hub-card span) {
      font-size: 17px;
      line-height: 1.8;
    }
    .about-page :is(.hero-figure figcaption, .photo-card figcaption, .source) { font-size: 14px; }
    .about-page :is(.eyebrow, .section-eyebrow, .column-label, .fee-scroll-hint, .inquiry-output) { font-size: 14px; }

    .curriculum-columns {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .curriculum-columns article { padding: 28px clamp(20px, 4vw, 48px); }
    .curriculum-columns article + article { border-left: 1px solid var(--line); }
    .curriculum-columns h3 { margin: 0; font-size: clamp(1.25rem, 2vw, 1.65rem); }
    .curriculum-columns p:not(.column-label) { max-width: 36em; margin: 12px 0 0; color: var(--muted); }
    .column-label { margin: 0 0 16px; color: var(--accent); font-size: .86rem; font-weight: 800; }
    .level-tag { display: inline-block; margin-left: 6px; padding: 2px 7px; border: 1px solid currentColor; font-size: .75rem; line-height: 1.35; }

    .lesson-flow {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 0;
      margin: 32px 0 0;
      padding: 0;
      list-style: none;
      counter-reset: flow;
      border-top: 3px solid var(--ink);
      border-bottom: 1px solid var(--line);
    }
    .lesson-flow li { position: relative; min-height: 146px; padding: 25px 20px 22px 54px; counter-increment: flow; }
    .lesson-flow li + li { border-left: 1px solid var(--line); }
    .lesson-flow li::before { position: absolute; top: 23px; left: 20px; color: var(--accent); content: counter(flow, decimal-leading-zero); font-family: "Nanum Myeongjo", "Noto Serif KR", serif; font-weight: 800; }
    .lesson-flow strong, .lesson-flow span { display: block; }
    .lesson-flow span { margin-top: 8px; color: var(--muted); font-size: .9rem; line-height: 1.65; }

    .proof-links { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .proof-links .research-card,
    .record-card { min-height: 210px; }
    .proof-links .research-card:nth-child(n) { grid-column: auto; }
    .proof-links .research-card:nth-child(5) { border-left: 0; }
    .proof-links .research-card:nth-child(5),
    .proof-links .research-card:nth-child(6),
    .proof-links .research-card:nth-child(7) { border-top: 1px solid var(--line); }
    .record-supplement { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 32px; border-top: 3px solid var(--ink); border-bottom: 1px solid var(--line); }
    .record-card { padding: 26px; }
    .record-card + .record-card { border-left: 1px solid var(--line); }
    .record-card small { color: var(--accent); font-weight: 800; }
    .record-card h3 { margin: 10px 0 0; }
    .record-card p { margin: 10px 0 0; color: var(--muted); }
    .record-card a { display: inline-block; margin-top: 18px; color: var(--accent); font-weight: 800; }

    #representative-photos .photo-grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
    #representative-photos .photo-card:nth-child(n) { grid-column: span 4; margin-top: 0; padding-top: 0; }
    #representative-photos .photo-card:nth-child(1) { grid-column: span 8; }
    #representative-photos .photo-card:nth-child(2) { grid-column: span 4; padding-top: 42px; }
    #representative-photos .photo-card img { aspect-ratio: 16 / 10; object-position: top center; }

    :is(#academy-registration, #academy-consultation) > :is(.chapter-subsection, .chapter-consult) { margin-top: var(--band-md); padding: 0; border-top: 0; }
    :is(#academy-registration, #academy-consultation) > :is(.chapter-subsection, .chapter-consult) + :is(.chapter-subsection, .chapter-consult) { margin-top: 32px; }
    .consult-audience-actions { display: flex; flex-wrap: wrap; gap: 28px; }
    .consult-audience-actions > div { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
    .consult-audience-actions strong { display: block; width: 100%; color: var(--accent); font-size: .88rem; }

    /* intro.html — image-led detailed introduction */
    .intro-page .intro-hero {
      max-width: 980px;
      min-height: 0;
      grid-template-columns: minmax(0, 1fr);
      padding-bottom: clamp(52px, 7vw, 92px);
    }
    .intro-page .intro-sequence { max-width: 860px; margin: 0 auto; padding: var(--band-lg) 20px; }
    .intro-page .intro-sequence picture { display: block; border-top: 1px solid var(--line); }
    .intro-page .intro-sequence picture:last-child { border-bottom: 1px solid var(--line); }
    .intro-page .intro-sequence img { display: block; width: 100%; height: auto; }
    .intro-page .intro-cta { max-width: 860px; margin: 0 auto var(--band-lg); padding: 32px 0; border-top: 3px solid var(--ink); border-bottom: 1px solid var(--line); }
    .intro-page .intro-cta p { max-width: 46em; color: var(--muted); }

    @media (max-width: 760px) {
      .page-toc { padding: 0 16px; }
      .page-toc > span, .page-toc a { min-height: 44px; padding-inline: 12px; }
      .about-page .nav a { font-size: 14px; }
      .about-page .about-chip-row .stat b { font-size: 19px; }
      .about-page .about-chip-row .stat span { font-size: 14px; }
      .about-page main > .band { padding-block: var(--band-md); }
      .curriculum-columns, .record-supplement { grid-template-columns: 1fr; }
      .curriculum-columns article + article, .record-card + .record-card { border-top: 1px solid var(--line); border-left: 0; }
      .lesson-flow { grid-template-columns: 1fr; }
      .lesson-flow li { min-height: 0; }
      .lesson-flow li + li { border-top: 1px solid var(--line); border-left: 0; }
      .proof-links { grid-template-columns: 1fr; }
      .proof-links .research-card:nth-child(n) { border-top: 1px solid var(--line); border-left: 0; }
      .proof-links .research-card:first-child { border-top: 0; }
      #representative-photos .photo-card:nth-child(n) { grid-column: 1 / -1; padding-top: 0; }
      #representative-photos .photo-card:nth-child(2) { padding-top: 0; }
      .intro-page .intro-sequence { padding: var(--band-md) 16px; }
      .intro-page .intro-cta { margin: 0 16px var(--band-md); }
    }

    .archive-featured-records {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      border-top: 3px solid var(--ink);
      border-bottom: 1px solid var(--line);
    }
    .archive-featured-records article { display: flex; min-height: 172px; padding: 20px; flex-direction: column; }
    .archive-featured-records article + article { border-left: 1px solid var(--line); }
    .archive-featured-records article:nth-child(5) { border-top: 1px solid var(--line); border-left: 0; }
    .archive-featured-records article:nth-child(n + 6) { border-top: 1px solid var(--line); }
    .archive-featured-records small { color: var(--accent); font-size: .78rem; font-weight: 800; }
    .archive-featured-records h3 { margin: 10px 0 0; font-size: 1.08rem; }
    .archive-featured-records a { margin-top: auto; padding-top: 14px; color: var(--accent); font-size: .9rem; font-weight: 800; }
    .archive-record-years { margin-top: var(--band-md); padding: 28px 0 0; border-top: 3px solid var(--ink); }
    .archive-record-years > h3 { margin: 0; font-size: clamp(1.35rem, 2.4vw, 1.8rem); }
    .archive-record-years > p { max-width: var(--reading-measure); margin: 10px 0 24px; color: var(--muted); }
    .archive-year-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .archive-year-grid article { padding: 20px; }
    .archive-year-grid article + article { border-left: 1px solid var(--line); }
    .archive-year-grid h4 { margin: 0; color: var(--accent); font-family: "Nanum Myeongjo", "Noto Serif KR", serif; font-size: 1.2rem; }
    .archive-year-grid ul { margin: 16px 0 0; padding: 0; list-style: none; }
    .archive-year-grid li + li { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
    .archive-year-grid a, .archive-year-grid span { display: block; }
    .archive-year-grid a { color: var(--ink); font-weight: 700; }
    .archive-year-grid span { margin-top: 4px; color: var(--muted); font-size: .83rem; line-height: 1.55; }

    @media (max-width: 760px) {
      .archive-featured-records, .archive-year-grid { grid-template-columns: 1fr; }
      .archive-featured-records article:nth-child(n), .archive-year-grid article + article { border-top: 1px solid var(--line); border-left: 0; }
      .archive-featured-records article:first-child { border-top: 0; }
    }