@font-face {
      font-family: "GmarketSans";
      src: url("../assets/intro/fonts/GmarketSansTTFBold.ttf") format("truetype");
      font-weight: 700;
      font-display: swap;
    }

    @font-face {
      font-family: "RIDIBatang";
      src: url("../assets/intro/fonts/RIDIBatang.ttf") format("truetype");
      font-weight: 400;
      font-display: swap;
    }

    @font-face {
      font-family: "ChosunKg";
      src: url("../assets/intro/fonts/ChosunKg.TTF") format("truetype");
      font-weight: 700;
      font-display: swap;
    }

    /* :root 변수도 #screen-intro 안으로 격리
       — 특히 --teal 은 wordlist.css/workbook.css(#0891B2)와 충돌 방지 */
    #screen-intro {
      --ink: #111827;
      --muted: #667085;
      --paper: #f7f2e8;
      --paper-2: #fff9ef;
      --line: #e6ded0;
      --green: #0e5d4f;
      --green-2: #083a34;
      --teal: #087d8d;
      --orange: #ee781b;
      --yellow: #ffd85c;
      --black: #070b12;
      --white: #fff;
      --shadow: 0 28px 80px rgba(17, 24, 39, 0.18);
    }

    /* 글로벌 셀렉터(* / html / body / a)는 #screen-intro 안으로 격리
       — 다른 화면(home / wordlist / workbook 등)에 영향 가지 않도록 */
    #screen-intro,
    #screen-intro * {
      box-sizing: border-box;
    }

    #screen-intro {
      scroll-behavior: smooth;
      font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      color: var(--ink);
      background: #e8e8e4;
      letter-spacing: 0;
      word-break: keep-all;
      overflow-wrap: break-word;
    }

    /* 밑줄 제거: detail-frame 안 + sticky CTA까지 모두 적용 */
    #screen-intro .detail-frame a,
    #screen-intro .sticky a {
      text-decoration: none;
    }

    /* 일반 텍스트 링크만 부모 색 상속 (a.btn 같은 자체 색 가진 링크는 제외) */
    #screen-intro .detail-frame a:not(.btn) {
      color: inherit;
    }

    .detail-frame {
      width: min(620px, 100%);
      min-height: 100vh;
      margin: 0 auto;
      overflow: hidden;
      background: var(--white);
      box-shadow: 0 0 72px rgba(0, 0, 0, 0.1);
    }

    .cut {
      position: relative;
      min-height: 820px;
      padding: 78px 42px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      overflow: hidden;
      border-bottom: 1px solid rgba(17, 24, 39, 0.08);
    }

    .cut.compact {
      min-height: 660px;
    }

    .cut.tall {
      min-height: 980px;
    }

    .cut.white {
      background: var(--white);
    }

    .cut.paper {
      background: var(--paper);
    }

    .cut.cream {
      background: var(--paper-2);
    }

    .cut.dark {
      color: var(--white);
      background: var(--black);
    }

    .cut.green {
      color: var(--white);
      background: linear-gradient(180deg, var(--green), var(--green-2));
    }

    .eyebrow {
      display: inline-flex;
      align-self: flex-start;
      margin-bottom: 24px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(238, 120, 27, 0.12);
      color: var(--orange);
      font-size: 13px;
      line-height: 1;
      font-weight: 950;
    }

    .dark .eyebrow,
    .green .eyebrow {
      background: rgba(255, 255, 255, 0.12);
      color: var(--yellow);
    }

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

    .title {
      font-size: clamp(42px, 8vw, 62px);
      line-height: 1.24;
      font-weight: 950;
      letter-spacing: 0;
    }

    .title.hero {
      font-size: clamp(50px, 10vw, 76px);
      line-height: 1.16;
    }

    .title.small {
      font-size: clamp(36px, 7vw, 52px);
      line-height: 1.24;
    }

    .transition-cut {
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
    }

    .transition-title {
      width: 100%;
      font-size: clamp(58px, 11vw, 92px);
      line-height: 1.16;
    }

    .title.explain-title {
      font-size: clamp(38px, 7vw, 54px);
      line-height: 1.28;
    }

    .title.problem-title {
      font-size: clamp(38px, 7.4vw, 56px);
      line-height: 1.25;
    }

    .statement-cut {
      align-items: center;
      text-align: center;
    }

    .statement-title {
      max-width: 540px;
      font-size: clamp(44px, 8.4vw, 66px);
      line-height: 1.3;
    }

    .key-block {
      display: inline-block;
      margin: 8px 0;
      padding: 4px 12px 8px;
      background: var(--yellow);
      color: #171100;
      line-height: 1.1;
    }

    .marker {
      display: inline;
      padding: 0 0.1em 0.08em;
      background: linear-gradient(180deg, transparent 48%, rgba(255, 216, 92, 0.95) 48%);
    }

    .marker-sweep {
      background:
        linear-gradient(180deg, transparent 48%, rgba(255, 216, 92, 0.95) 48%)
        left bottom / 0% 100% no-repeat;
    }

    .motion-in .marker-sweep {
      animation: markerSweep 0.78s cubic-bezier(0.22, 0.82, 0.22, 1) 0.1s forwards;
    }

    @keyframes markerSweep {
      to {
        background-size: 100% 100%;
      }
    }

    .lead {
      max-width: 480px;
      margin-top: 28px;
      color: #344054;
      font-size: 20px;
      line-height: 1.55;
      font-weight: 760;
    }

    .dark .lead,
    .green .lead {
      color: rgba(255, 255, 255, 0.78);
    }

    .orange-strip {
      display: inline-flex;
      align-self: flex-start;
      margin-top: 28px;
      padding: 10px 15px;
      background: var(--orange);
      color: var(--white);
      font-size: 26px;
      line-height: 1.1;
      font-weight: 950;
    }

    .hero-identity {
      max-width: 510px;
      margin-top: 22px;
      color: #1f2937;
      font-size: 20px;
      line-height: 1.55;
      font-weight: 900;
    }

    .product-identity {
      align-items: center;
      text-align: center;
    }

    .identity-label {
      display: inline-flex;
      margin-bottom: 22px;
      padding: 9px 13px;
      border-radius: 999px;
      background: rgba(238, 120, 27, 0.14);
      color: var(--orange);
      font-size: 13px;
      line-height: 1;
      font-weight: 950;
    }

    .identity-title {
      max-width: 540px;
      font-size: clamp(40px, 8.4vw, 62px);
      line-height: 1.24;
      font-weight: 950;
      letter-spacing: 0;
    }

    .identity-lead {
      max-width: 520px;
      margin-top: 28px;
      color: #344054;
      font-size: 21px;
      line-height: 1.58;
      font-weight: 820;
    }

    .identity-flow {
      width: 100%;
      margin-top: 42px;
      display: grid;
      gap: 10px;
    }

    .identity-step {
      display: flex;
      align-items: center;
      gap: 14px;
      min-height: 58px;
      padding: 0 16px;
      border-radius: 8px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: 0 12px 28px rgba(17, 24, 39, 0.08);
      color: var(--ink);
      font-size: 20px;
      font-weight: 950;
      text-align: left;
    }

    .identity-step b {
      width: 34px;
      height: 34px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: var(--orange);
      color: var(--white);
      font-size: 15px;
      flex: 0 0 auto;
    }

    .product-reveal {
      align-items: center;
      text-align: center;
    }

    .reveal-label {
      display: inline-flex;
      margin-bottom: 18px;
      padding: 9px 13px;
      border-radius: 999px;
      background: rgba(238, 120, 27, 0.14);
      color: var(--orange);
      font-size: 13px;
      line-height: 1;
      font-weight: 950;
    }

    .reveal-title {
      font-size: clamp(42px, 8.8vw, 66px);
      line-height: 1.18;
      font-weight: 950;
      letter-spacing: 0;
    }

    .reveal-title .brand-line {
      display: block;
      margin-bottom: 12px;
      color: var(--orange);
      font-size: 0.58em;
      line-height: 1.1;
    }

    .reveal-lead {
      max-width: 500px;
      margin-top: 24px;
      color: #344054;
      font-size: 20px;
      line-height: 1.58;
      font-weight: 820;
    }

    .program-stage {
      width: 100%;
      margin-top: 44px;
      border-radius: 8px;
      overflow: hidden;
      background: #f9fbfd;
      border: 1px solid #dbe5ec;
      box-shadow: var(--shadow);
      text-align: left;
    }

    .program-top {
      height: 46px;
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 0 16px;
      background: #12384a;
    }

    .program-top i {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.48);
    }

    .program-url {
      flex: 1;
      margin-left: 8px;
      padding: 7px 12px;
      border-radius: 6px;
      background: rgba(255, 255, 255, 0.16);
      color: rgba(255, 255, 255, 0.82);
      font-size: 12px;
      font-weight: 850;
    }

    .program-body {
      min-height: 430px;
      display: grid;
      grid-template-columns: 150px 1fr;
      gap: 18px;
      padding: 24px;
      background:
        radial-gradient(circle at 82% 14%, rgba(238, 120, 27, 0.16), transparent 32%),
        linear-gradient(180deg, #f9fbfd, #fff);
    }

    .program-sidebar {
      display: grid;
      gap: 10px;
      align-content: start;
    }

    .program-menu {
      min-height: 42px;
      display: flex;
      align-items: center;
      padding: 0 12px;
      border-radius: 8px;
      background: #eef4f1;
      color: var(--green);
      font-size: 14px;
      font-weight: 950;
    }

    .program-menu.active {
      background: var(--green);
      color: var(--white);
    }

    .program-main {
      position: relative;
      min-height: 382px;
    }

    .program-card {
      position: absolute;
      border-radius: 8px;
      background: #fff;
      border: 1px solid #dbe5ec;
      box-shadow: 0 18px 42px rgba(17, 24, 39, 0.12);
    }

    .word-list-card {
      left: 0;
      top: 0;
      width: 210px;
      padding: 16px;
    }

    .modal-preview {
      right: 0;
      top: 42px;
      width: 250px;
      padding: 18px;
      border-color: #f0c56f;
    }

    .output-preview {
      left: 38px;
      bottom: 0;
      right: 18px;
      padding: 16px;
    }

    .program-card strong {
      display: block;
      color: var(--ink);
      font-size: 18px;
      line-height: 1.35;
      font-weight: 950;
    }

    .program-card p {
      margin-top: 9px;
      color: #667085;
      font-size: 13px;
      line-height: 1.45;
      font-weight: 760;
    }

    .program-chip {
      display: inline-flex;
      margin: 8px 6px 0 0;
      padding: 7px 9px;
      border-radius: 8px;
      background: #f0f6f4;
      color: var(--green);
      font-size: 13px;
      font-weight: 950;
    }

    .output-grid {
      margin-top: 12px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
    }

    .output-grid span {
      min-height: 54px;
      display: grid;
      place-items: center;
      border-radius: 7px;
      background: #f8fafc;
      color: #334155;
      font-size: 13px;
      font-weight: 900;
      text-align: center;
    }

    .promise-cut {
      align-items: center;
      text-align: center;
    }

    .promise-title {
      max-width: 540px;
      font-size: clamp(42px, 8.8vw, 64px);
      line-height: 1.22;
      font-weight: 950;
    }

    .promise-flow {
      width: 100%;
      margin-top: 44px;
      display: grid;
      grid-template-columns: 1fr;
      gap: 12px;
    }

    .promise-node {
      min-height: 72px;
      display: grid;
      grid-template-columns: 104px 1fr;
      align-items: center;
      border-radius: 8px;
      overflow: hidden;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.16);
      text-align: left;
    }

    .promise-node b {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--yellow);
      color: #201600;
      font-size: 15px;
      font-weight: 950;
    }

    .promise-node span {
      padding: 0 18px;
      color: var(--white);
      font-size: 21px;
      font-weight: 950;
    }

    .promise-arrow {
      color: var(--yellow);
      font-size: 24px;
      line-height: 1;
      font-weight: 950;
    }

    .keyword {
      color: var(--orange);
    }

    .dark .keyword,
    .green .keyword {
      color: var(--yellow);
    }

    .wide-visual {
      width: 100%;
      margin-top: 56px;
    }

    .photo-scene {
      position: relative;
      min-height: 390px;
      border-radius: 6px;
      overflow: hidden;
      background:
        radial-gradient(circle at 28% 24%, rgba(255, 255, 255, 0.86) 0 7%, transparent 8%),
        linear-gradient(145deg, #f4efe4 0%, #d8d0bf 56%, #b9b1a1 100%);
      box-shadow: var(--shadow);
    }

    .photo-scene.dark-floor {
      background:
        radial-gradient(circle at 76% 28%, rgba(255, 255, 255, 0.16) 0 9%, transparent 10%),
        linear-gradient(150deg, #242424 0%, #4a4743 55%, #211f1e 100%);
    }

    .photo-scene.clean-room {
      background:
        linear-gradient(180deg, #f8f7f2 0 58%, #e4dfd3 59% 100%);
    }

    .card-pile {
      position: absolute;
      inset: 70px 24px 24px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      transform: rotate(-2deg);
    }

    .mock-card {
      min-height: 132px;
      padding: 15px;
      border-radius: 5px;
      background: var(--white);
      border: 1px solid #e4d7c5;
      box-shadow: 0 16px 26px rgba(77, 62, 46, 0.14);
      transform: rotate(var(--r));
    }

    .mock-card span {
      display: inline-flex;
      padding: 6px 8px;
      border-radius: 6px;
      background: #e6f5f1;
      color: var(--green);
      font-size: 12px;
      font-weight: 900;
    }

    .mock-card strong {
      display: block;
      margin-top: 18px;
      font-size: 25px;
      font-weight: 950;
    }

    .mock-card small {
      display: block;
      margin-top: 12px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 800;
    }

    .age-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 48px;
    }

    .age-card {
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 268px;
      padding: 38px 24px 32px;
      border-radius: 10px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: 0 12px 28px rgba(17, 24, 39, 0.06);
      text-align: center;
    }

    .age-card::before {
      content: "";
      position: absolute;
      top: 22px;
      left: 22px;
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--orange);
    }

    .age-card.older::before {
      background: var(--green);
    }

    .age-card strong {
      display: block;
      color: var(--orange);
      font-size: 38px;
      font-weight: 950;
      line-height: 1.1;
      letter-spacing: -0.01em;
    }

    .age-card.older strong {
      color: var(--green);
    }

    .age-range {
      display: block;
      margin-top: 10px;
      padding: 0;
      background: transparent;
      color: var(--muted);
      font-size: 13px;
      line-height: 1;
      font-weight: 850;
      letter-spacing: 0.02em;
    }

    .age-card.older .age-range {
      background: transparent;
      color: var(--muted);
    }

    .age-card p {
      margin-top: 30px;
      font-size: 24px;
      line-height: 1.4;
      font-weight: 950;
    }

    .age-note {
      margin-top: 44px;
      padding: 0;
      background: transparent;
      border: 0;
      color: var(--ink);
      font-size: 32px;
      line-height: 1.42;
      font-weight: 950;
      text-align: center;
    }

    .question-box {
      margin-top: 48px;
      padding: 36px 30px;
      border-radius: 8px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    .speech {
      padding: 26px;
      border-radius: 8px;
      background: #f8fafc;
      border: 1px solid #e4e7ec;
      font-size: 32px;
      line-height: 1.36;
      font-weight: 950;
    }

    .reason-pill {
      display: inline-flex;
      margin-top: 24px;
      padding: 10px 14px;
      border-radius: 999px;
      background: #fff1bf;
      color: #7a4a00;
      font-size: 15px;
      font-weight: 950;
    }

    .parent-dialog {
      margin-top: 46px;
      display: grid;
      gap: 14px;
    }

    .parent-bubble {
      position: relative;
      max-width: 88%;
      padding: 18px 20px;
      border-radius: 8px;
      background: #f8fafc;
      border: 1px solid #e4e7ec;
      box-shadow: 0 14px 28px rgba(17, 24, 39, 0.08);
      font-size: 23px;
      line-height: 1.42;
      font-weight: 900;
      color: var(--ink);
    }

    .parent-bubble:nth-child(2) {
      justify-self: end;
      background: #fff7dd;
      border-color: #f5d680;
    }

    .parent-bubble:nth-child(3) {
      background: #eef8f3;
      border-color: #b9dfcc;
    }

    .answer-point {
      margin-top: 34px;
      padding: 30px 26px 32px;
      border-radius: 8px;
      background: var(--white);
      border: 1px solid var(--line);
      border-top: 4px solid var(--orange);
      box-shadow: var(--shadow);
      font-size: 28px;
      line-height: 1.42;
      font-weight: 950;
      letter-spacing: -0.01em;
      text-align: center;
    }

    .answer-point .reason-pill {
      display: flex;
      width: fit-content;
      margin: 0 auto 18px;
    }

    .sentence-board {
      margin-top: 48px;
      padding: 30px 24px;
      border-radius: 8px;
      background: #121826;
      box-shadow: var(--shadow);
    }

    .theory-board {
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .formula-list {
      display: grid;
      gap: 12px;
    }

    .formula-line {
      display: flex;
      align-items: center;
      gap: 12px;
      min-height: 52px;
      padding: 0 16px;
      border-radius: 7px;
      background: rgba(255, 255, 255, 0.1);
      color: var(--white);
      font-size: 20px;
      line-height: 1.25;
      font-weight: 950;
    }

    .formula-check {
      width: 24px;
      height: 24px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex: 0 0 auto;
      border-radius: 999px;
      background: var(--orange);
      color: var(--white);
      font-size: 15px;
      line-height: 1;
      font-weight: 950;
    }

    .sentence-question {
      margin-top: 42px;
      color: var(--white);
      font-size: 38px;
      line-height: 1.36;
      font-weight: 950;
      letter-spacing: -0.005em;
      text-align: center;
    }

    .repeat-title {
      font-size: clamp(42px, 8vw, 60px);
      line-height: 1.26;
      font-weight: 950;
      letter-spacing: 0;
    }

    .repeat-title .quiet {
      display: block;
      color: #2a3442;
      font-size: clamp(34px, 6.6vw, 46px);
      line-height: 1.34;
    }

    .repeat-title .hit {
      display: inline-block;
      margin: 14px 0 12px;
      padding: 4px 10px 8px;
      background: var(--orange);
      color: var(--white);
      line-height: 1.08;
    }

    .repeat-lines {
      margin-top: 48px;
      display: grid;
      gap: 10px;
    }

    .repeat-line {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 58px;
      padding: 0 18px;
      border-radius: 8px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: 0 14px 28px rgba(17, 24, 39, 0.08);
      color: var(--ink);
      font-size: 24px;
      font-weight: 950;
    }

    .repeat-line span {
      color: var(--orange);
    }

    .teacher-burden {
      margin-top: 36px;
      color: var(--ink);
      font-size: 31px;
      line-height: 1.4;
      font-weight: 950;
      text-align: center;
    }

    .sentence-line {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
      margin-top: 12px;
    }

    .sentence-line:first-child {
      margin-top: 0;
    }

    .chip {
      min-height: 46px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0 14px;
      border-radius: 7px;
      background: rgba(255, 255, 255, 0.12);
      color: var(--white);
      font-size: 18px;
      font-weight: 900;
    }

    .chip.hot {
      background: var(--orange);
    }

    .resource-panel,
    .report-panel,
    .screen-panel {
      margin-top: 48px;
      border-radius: 8px;
      overflow: hidden;
      background: var(--white);
      border: 1px solid #dbe5ec;
      box-shadow: var(--shadow);
    }

    .screen-top {
      height: 44px;
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 0 15px;
      background: #12384a;
    }

    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.45);
    }

    .screen-title {
      flex: 1;
      height: 25px;
      display: flex;
      align-items: center;
      margin-left: 8px;
      padding: 0 12px;
      border-radius: 5px;
      background: rgba(255, 255, 255, 0.16);
      color: rgba(255, 255, 255, 0.8);
      font-size: 12px;
      font-weight: 850;
    }

    .screen-body {
      min-height: 450px;
      padding: 28px;
      background: linear-gradient(180deg, #f9fbfd, #fff);
    }

    .tabs {
      display: flex;
      gap: 9px;
      margin-bottom: 24px;
      overflow: hidden;
    }

    .tab {
      flex: 0 0 auto;
      padding: 11px 14px;
      border-radius: 8px;
      background: #eef2f7;
      color: #334155;
      font-size: 13px;
      font-weight: 950;
    }

    .tab.active {
      background: var(--teal);
      color: var(--white);
    }

    .word-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .word-card {
      min-height: 112px;
      padding: 14px;
      border-radius: 8px;
      background: var(--white);
      border: 1px solid #d9e5ea;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      animation: cardPulse 5s ease-in-out infinite;
    }

    .word-card:nth-child(2) {
      animation-delay: 0.6s;
    }

    .word-card:nth-child(3) {
      animation-delay: 1.2s;
    }

    .priority {
      align-self: flex-start;
      padding: 7px 9px;
      border-radius: 999px;
      background: #ff4d4d;
      color: var(--white);
      font-size: 12px;
      font-weight: 950;
    }

    .priority.gold {
      background: #d99a00;
    }

    .category {
      align-self: flex-start;
      padding: 7px 9px;
      border-radius: 7px;
      background: #dff5f2;
      color: #08776d;
      font-size: 15px;
      font-weight: 950;
    }

    .word {
      font-size: 24px;
      font-weight: 950;
    }

    .resource-flow {
      padding: 28px;
    }

    .pick-list {
      display: grid;
      gap: 10px;
      margin-bottom: 18px;
    }

    .pick-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 13px 14px;
      border-radius: 8px;
      background: #eef8f7;
      color: #0f5149;
      font-size: 18px;
      font-weight: 950;
    }

    .pick-item span {
      color: var(--orange);
      font-size: 13px;
    }

    .sheet-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .sheet {
      min-height: 106px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 14px;
      border-radius: 8px;
      background: var(--white);
      border: 1px dashed #b9c8ce;
      color: #344054;
      text-align: center;
      font-size: 17px;
      line-height: 1.42;
      font-weight: 900;
    }

    .activity-fan {
      position: relative;
      min-height: 430px;
      margin-top: 48px;
    }

    .activity-card {
      position: absolute;
      width: 210px;
      min-height: 150px;
      padding: 20px;
      border-radius: 8px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      transform: rotate(var(--r));
    }

    .activity-card:nth-child(1) {
      left: 18px;
      top: 40px;
    }

    .activity-card:nth-child(2) {
      right: 12px;
      top: 72px;
    }

    .activity-card:nth-child(3) {
      left: 124px;
      top: 220px;
    }

    .activity-card strong {
      display: block;
      font-size: 26px;
      font-weight: 950;
    }

    .activity-card span {
      display: block;
      margin-top: 18px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.5;
      font-weight: 800;
    }

    .report-panel {
      padding: 30px 24px;
    }

    .bar-row {
      display: grid;
      grid-template-columns: 88px 1fr 42px;
      gap: 12px;
      align-items: center;
      margin-top: 18px;
      color: #344054;
      font-size: 15px;
      font-weight: 900;
    }

    .bar-row:first-child {
      margin-top: 0;
    }

    .bar {
      height: 16px;
      border-radius: 999px;
      overflow: hidden;
      background: #e4e7ec;
    }

    .bar i {
      display: block;
      width: var(--w);
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, #94a3b8, #cbd5e1);
      animation: barGrow 4.2s ease-in-out infinite;
    }

    .report-panel.solution .bar i {
      background: linear-gradient(90deg, var(--green), var(--orange));
    }

    .report-panel.solution {
      border: 1px solid rgba(14, 93, 79, 0.18);
      box-shadow: 0 18px 46px rgba(14, 93, 79, 0.12);
    }

    .flow-strip {
      margin-top: 46px;
      display: grid;
      gap: 11px;
    }

    .flow-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 15px 16px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.14);
      font-size: 20px;
      font-weight: 950;
    }

    .flow-item b {
      width: 34px;
      height: 34px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: var(--yellow);
      color: #231900;
      font-size: 15px;
      flex: 0 0 auto;
    }

    .modal-card {
      margin-top: 24px;
      padding: 24px;
      border-radius: 8px;
      background: var(--white);
      border: 1px solid #e4e7ec;
      box-shadow: 0 24px 50px rgba(17, 24, 39, 0.14);
      animation: modalIn 4.8s ease-in-out infinite;
    }

    .modal-card strong {
      display: block;
      font-size: 22px;
      font-weight: 950;
    }

    .modal-card p {
      margin-top: 12px;
      color: #475467;
      font-size: 15px;
      line-height: 1.55;
      font-weight: 760;
    }

    .number-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 48px;
    }

    .number-card {
      min-height: 178px;
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.09);
      border: 1px solid rgba(255, 255, 255, 0.13);
    }

    .number-card strong {
      color: var(--yellow);
      font-size: 48px;
      line-height: 1;
      font-weight: 950;
    }

    .number-card span {
      color: rgba(255, 255, 255, 0.78);
      font-size: 16px;
      font-weight: 850;
    }

    .price-card {
      margin-top: 28px;
      padding: 26px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.18);
      opacity: 0.78;
    }

    .price-card.regular .price-value {
      text-decoration: line-through;
      text-decoration-color: rgba(255, 255, 255, 0.5);
      text-decoration-thickness: 3px;
      color: rgba(255, 255, 255, 0.7);
    }

    .price-card.white {
      margin-top: 14px;
      padding: 30px 26px;
      background: var(--white);
      color: var(--ink);
      box-shadow: var(--shadow);
      opacity: 1;
    }

    .price-label {
      display: inline-flex;
      padding: 9px 12px;
      border-radius: 999px;
      background: rgba(255, 216, 92, 0.22);
      color: var(--yellow);
      font-size: 13px;
      font-weight: 950;
    }

    .price-card.white .price-label {
      background: #fff1bf;
      color: #805000;
    }

    .price-card h3 {
      margin-top: 20px;
      font-size: 26px;
      font-weight: 950;
    }

    .price-value {
      margin-top: 12px;
      font-size: 38px;
      line-height: 1.16;
      font-weight: 950;
    }

    .benefits {
      margin: 22px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 11px;
    }

    .benefits li {
      display: flex;
      gap: 10px;
      font-size: 16px;
      line-height: 1.5;
      font-weight: 850;
    }

    .benefits li::before {
      content: "";
      width: 8px;
      height: 8px;
      margin-top: 7px;
      border-radius: 50%;
      background: var(--orange);
      flex: 0 0 auto;
    }

    .faq-item {
      padding: 26px 0;
      border-top: 1px solid var(--line);
    }

    .faq-item:first-of-type {
      margin-top: 14px;
    }

    .faq-item strong {
      display: block;
      font-size: 21px;
      line-height: 1.42;
      font-weight: 950;
      letter-spacing: -0.005em;
    }

    .faq-item p {
      margin-top: 12px;
      color: #475467;
      font-size: 16px;
      line-height: 1.62;
      font-weight: 760;
    }

    .btn {
      min-height: 56px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0 22px;
      border-radius: 8px;
      border: 0;
      background: var(--yellow);
      color: #241900;
      font-size: 18px;
      font-weight: 950;
      box-shadow: 0 18px 34px rgba(0, 0, 0, 0.16);
    }

    .btn.large {
      width: 100%;
      min-height: 68px;
      padding: 0 28px;
      font-size: 22px;
      letter-spacing: -0.005em;
    }

    .cta-final {
      width: 100%;
      margin-top: 38px;
    }

    .cta-note {
      margin-top: 16px;
      color: rgba(255, 255, 255, 0.62);
      font-size: 17px;
      font-weight: 800;
      line-height: 1.35;
      text-align: center;
    }

    .sticky {
      position: fixed;
      left: 50%;
      bottom: 0;
      z-index: 20;
      width: min(620px, 100%);
      padding: 14px 18px;
      background: rgba(7, 11, 18, 0.94);
      backdrop-filter: blur(16px);
      transform: translate(-50%, 110%);
      transition: transform 0.22s ease;
    }

    .sticky.visible {
      transform: translate(-50%, 0);
    }

    .sticky .btn {
      width: 100%;
    }

    @keyframes cardPulse {
      0%, 100% {
        transform: translateY(0);
        border-color: #d9e5ea;
      }
      45% {
        transform: translateY(-6px);
        border-color: var(--teal);
      }
    }

    @keyframes modalIn {
      0%, 18%, 100% {
        opacity: 0;
        transform: translateY(18px);
      }
      34%, 82% {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @keyframes barGrow {
      0%, 100% {
        transform: scaleX(0.86);
        transform-origin: left;
      }
      50% {
        transform: scaleX(1);
        transform-origin: left;
      }
    }

    @media (max-width: 520px) {
      .cut {
        min-height: 760px;
        padding: 58px 22px;
      }

      .cut.compact {
        min-height: 620px;
      }

      .cut.tall {
        min-height: 900px;
      }

      .title {
        font-size: clamp(35px, 10.5vw, 48px);
        line-height: 1.28;
      }

      .title.hero {
        font-size: clamp(42px, 12vw, 58px);
        line-height: 1.18;
      }

      .title.small {
        font-size: clamp(32px, 9.4vw, 44px);
        line-height: 1.26;
      }

      .transition-title {
        font-size: clamp(48px, 14vw, 66px);
        line-height: 1.18;
      }

      .title.explain-title {
        font-size: clamp(31px, 8.7vw, 40px);
        line-height: 1.32;
      }

      .title.problem-title {
        font-size: clamp(32px, 9.4vw, 43px);
        line-height: 1.3;
      }

      .statement-title {
        font-size: clamp(38px, 10.8vw, 50px);
        line-height: 1.34;
      }

      .key-block {
        margin: 6px 0;
        padding: 3px 9px 7px;
      }

      .lead {
        font-size: 20px;
        line-height: 1.58;
      }

      .orange-strip {
        font-size: 23px;
      }

      .hero-identity {
        font-size: 18px;
        line-height: 1.55;
      }

      .identity-title {
        font-size: clamp(36px, 10vw, 50px);
        line-height: 1.28;
      }

      .identity-lead {
        font-size: 18px;
        line-height: 1.58;
      }

      .identity-flow {
        margin-top: 36px;
      }

      .identity-step {
        min-height: 54px;
        padding: 0 13px;
        gap: 10px;
        font-size: 18px;
      }

      .identity-step b {
        width: 30px;
        height: 30px;
        font-size: 13px;
      }

      .reveal-title {
        font-size: clamp(38px, 10.6vw, 54px);
        line-height: 1.2;
      }

      .reveal-lead {
        font-size: 18px;
        line-height: 1.56;
      }

      .program-body {
        min-height: 500px;
        display: block;
        padding: 18px;
      }

      .program-sidebar {
        display: flex;
        gap: 8px;
        overflow: hidden;
      }

      .program-menu {
        flex: 1 0 auto;
        min-height: 36px;
        padding: 0 10px;
        font-size: 12px;
      }

      .program-main {
        min-height: 410px;
        margin-top: 18px;
      }

      .word-list-card {
        width: 184px;
      }

      .modal-preview {
        top: 52px;
        width: 214px;
      }

      .output-preview {
        left: 0;
        right: 0;
      }

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

      .program-card p {
        font-size: 12px;
      }

      .promise-title {
        font-size: clamp(36px, 10.4vw, 52px);
        line-height: 1.26;
      }

      .promise-node {
        grid-template-columns: 86px 1fr;
        min-height: 66px;
      }

      .promise-node span {
        padding: 0 13px;
        font-size: 18px;
      }

      .photo-scene {
        min-height: 340px;
      }

      .card-pile {
        inset: 54px 14px 18px;
        gap: 10px;
        grid-template-columns: 1fr 1fr;
      }

      .mock-card {
        min-height: 118px;
      }

      .age-row {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-top: 42px;
      }

      .age-card {
        min-height: 220px;
        padding: 34px 22px 28px;
      }

      .age-card strong {
        font-size: 34px;
      }

      .age-card p {
        font-size: 22px;
      }

      .age-note {
        font-size: 26px;
        line-height: 1.45;
      }

      .speech {
        font-size: 26px;
        padding: 22px;
      }

      .parent-dialog {
        margin-top: 38px;
      }

      .parent-bubble {
        font-size: 20px;
        line-height: 1.42;
        padding: 16px 17px;
      }

      .answer-point {
        font-size: 25px;
        line-height: 1.42;
      }

      .formula-line {
        gap: 8px;
        padding: 0 11px;
        font-size: 18px;
      }

      .formula-check {
        width: 22px;
        height: 22px;
        font-size: 13px;
      }

      .sentence-question {
        font-size: 32px;
        line-height: 1.38;
      }

      .repeat-title {
        font-size: clamp(36px, 10vw, 48px);
        line-height: 1.28;
      }

      .repeat-title .quiet {
        font-size: clamp(30px, 8.4vw, 40px);
        line-height: 1.36;
      }

      .repeat-lines {
        margin-top: 40px;
      }

      .repeat-line {
        min-height: 54px;
        padding: 0 14px;
        font-size: 21px;
      }

      .teacher-burden {
        font-size: 27px;
        line-height: 1.42;
      }

      .screen-body {
        min-height: 410px;
        padding: 22px;
      }

      .word {
        font-size: 22px;
      }

      .activity-fan {
        min-height: 380px;
      }

      .activity-card {
        width: 178px;
        min-height: 138px;
      }

      .activity-card:nth-child(1) {
        left: 0;
      }

      .activity-card:nth-child(2) {
        right: 0;
      }

      .activity-card:nth-child(3) {
        left: 76px;
      }

      .sheet-grid,
      .word-grid,
      .number-grid {
        grid-template-columns: 1fr 1fr;
      }

      .sheet {
        min-height: 92px;
        font-size: 15px;
      }

      .bar-row {
        grid-template-columns: 70px 1fr 34px;
        gap: 9px;
        font-size: 13px;
      }

      .number-card {
        min-height: 150px;
      }

      .number-card strong {
        font-size: 38px;
      }

      .price-value {
        font-size: 32px;
      }
    }


    .section-no {
      display: none;
      position: absolute;
      top: 22px;
      right: 22px;
      z-index: 4;
      color: rgba(10, 20, 34, 0.34);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .dark .section-no,
    .green .section-no {
      color: rgba(255, 255, 255, 0.48);
    }

    @media (max-width: 640px) {
      .section-no {
        top: 16px;
        right: 16px;
        font-size: 11px;
      }
      .price-anchor-section .section-no {
        top: 16px;
        right: 16px;
      }
    }
    .hero-photo {
      display: block;
      width: calc(100% + 84px);
      height: auto;
      margin: 56px -42px 0;
      border-radius: 0;
      box-shadow: none;
    }

    @media (max-width: 520px) {
      .hero-photo {
        width: calc(100% + 44px);
        margin: 42px -22px 0;
      }
    }

    .problem-photo-wrap {
      position: relative;
      width: calc(100% + 84px);
      margin: 56px -42px 0;
      overflow: hidden;
    }

    .problem-photo-wrap .hero-photo {
      width: 100%;
      margin: 0;
    }

    .material-loop {
      justify-content: center;
    }

    .material-loop .problem-photo-wrap {
      margin-top: 34px;
    }

    .material-image-placeholder {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 100%;
      min-height: 420px;
      border: 2px dashed rgba(17, 24, 39, 0.22);
      border-radius: 8px;
      background: #f6f7f9;
      color: rgba(17, 24, 39, 0.62);
      font-size: clamp(24px, 5vw, 34px);
      line-height: 1;
      font-weight: 800;
      letter-spacing: 0;
    }

    .material-image-stack {
      display: flex;
      gap: 8px;
      width: 100%;
      height: 420px;
      border-radius: 8px;
      overflow: hidden;
    }

    .material-image {
      flex: 1;
      width: 50%;
      height: 100%;
      object-fit: cover;
      opacity: 0.55;
    }

    .material-loop-lead {
      margin: 26px 0 0;
      color: #344054;
      font-size: clamp(21px, 3.8vw, 27px);
      line-height: 1.62;
      font-weight: 800;
      letter-spacing: 0;
    }

    .material-loop-tail {
      margin: 34px auto 0;
      color: var(--ink);
      font-family: "RIDIBatang", "Batang", "Noto Serif KR", serif;
      font-size: clamp(25px, 4.6vw, 34px);
      line-height: 1.52;
      font-weight: 400;
      text-align: center;
    }

    .problem-question-card {
      position: absolute;
      left: 50%;
      top: 50%;
      width: min(65%, 405px);
      padding: 22px 28px 24px;
      border-radius: 10px;
      color: var(--white);
      background: rgba(17, 24, 39, 0.68);
      box-shadow: 0 18px 40px rgba(17, 24, 39, 0.26);
      font-family: "RIDIBatang", "Batang", "Noto Serif KR", serif;
      font-size: clamp(20px, 3.8vw, 28px);
      line-height: 1.5;
      font-weight: 400;
      text-align: center;
      text-shadow: 0 3px 14px rgba(0, 0, 0, 0.55);
      opacity: 0;
      transform: translate(-50%, calc(-50% + 18px));
    }

    .motion-in .problem-question-card {
      animation: questionCardFade 0.68s ease 0.65s forwards;
    }

    @keyframes questionCardFade {
      to {
        opacity: 1;
        transform: translate(-50%, -50%);
      }
    }

    @media (max-width: 520px) {
      .problem-photo-wrap {
        width: calc(100% + 44px);
        margin: 42px -22px 0;
      }

      .material-loop .problem-photo-wrap {
        margin-top: 30px;
      }

      .material-image-placeholder {
        min-height: 300px;
        border-radius: 6px;
        font-size: 24px;
      }

      .material-image-stack {
        height: 280px;
        gap: 6px;
        border-radius: 6px;
      }

      .material-loop-lead {
        margin-top: 22px;
        font-size: 19px;
      }

      .material-loop-tail {
        margin-top: 30px;
        font-size: 24px;
      }

      .problem-question-card {
        width: 64%;
        padding: 17px 18px 19px;
        border-radius: 8px;
        font-size: 21px;
      }
    }

    .night-hero {
      min-height: 1040px;
      justify-content: flex-start;
      padding: 84px 42px 0;
      color: var(--white);
      background:
        radial-gradient(circle at 22% 16%, rgba(8, 125, 141, 0.18), transparent 32%),
        linear-gradient(180deg, #07101c 0%, #05080e 42%, #070b12 100%);
    }

    .night-hero .section-no {
      color: rgba(255, 255, 255, 0.52);
    }

    .night-title {
      position: relative;
      z-index: 2;
      max-width: 540px;
      color: var(--white);
      text-shadow: 0 10px 32px rgba(0, 0, 0, 0.28);
    }

    .night-marker {
      display: inline;
      padding: 0;
      color: var(--white);
      background: none;
    }

    .night-lead {
      position: absolute;
      top: 50%;
      right: 30px;
      left: 30px;
      z-index: 2;
      max-width: none;
      margin: 0;
      color: #fff;
      font-family: "RIDIBatang", "Batang", "Noto Serif KR", serif;
      font-size: clamp(28px, 4.6vw, 34px);
      line-height: 1.48;
      font-weight: 400;
      text-align: center;
      letter-spacing: 0;
      text-shadow: 0 3px 12px rgba(0, 0, 0, 0.95), 0 8px 28px rgba(0, 0, 0, 0.72);
      transform: translateY(-50%);
    }

    .night-lead-line {
      position: relative;
      display: block;
      padding: 0 0.12em 0.06em;
      white-space: nowrap;
      opacity: 0;
      transform: translateY(24px);
    }

    .motion-in .night-lead-line {
      animation: nightLeadLine 0.58s cubic-bezier(0.18, 0.78, 0.18, 1) 0.12s forwards;
    }

    .night-lead-line + .night-lead-line {
      margin-top: 8px;
    }

    .motion-in .night-lead-line:nth-of-type(2) {
      animation-delay: 0.52s;
    }

    @keyframes nightLeadLine {
      from {
        opacity: 0;
        transform: translateY(24px);
      }

      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .night-photo-wrap {
      position: relative;
      width: calc(100% + 84px);
      height: 520px;
      margin: 62px -42px 0;
      overflow: hidden;
    }

    .night-photo-wrap::before {
      content: "";
      position: absolute;
      inset: 0;
      z-index: 1;
      background:
        linear-gradient(180deg, rgba(5, 8, 14, 0.86) 0%, rgba(5, 8, 14, 0.52) 36%, rgba(5, 8, 14, 0.08) 72%),
        radial-gradient(circle at 50% 8%, rgba(255, 216, 92, 0.16), transparent 34%);
      pointer-events: none;
    }

    .night-hero-photo {
      width: 100%;
      height: 100%;
      margin: 0;
      object-fit: cover;
      object-position: center 70%;
      opacity: 0.94;
    }

    @media (max-width: 520px) {
      .night-hero {
        min-height: 840px;
        padding: 76px 22px 0;
      }

      .night-title {
        font-size: clamp(48px, 14vw, 62px);
        line-height: 1.12;
      }

      .night-photo-wrap {
        width: calc(100% + 44px);
        height: 360px;
        margin: 52px -22px 0;
      }

      .night-lead {
        right: 8px;
        left: 8px;
        font-size: clamp(23px, 6.1vw, 25px);
        line-height: 1.5;
      }

      .night-hero-photo {
        object-position: center 72%;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      .marker-sweep {
        background-size: 100% 100%;
        animation: none;
      }

      .problem-question-card {
        opacity: 1;
        transform: translate(-50%, -50%);
        animation: none;
      }

      .motion-in .marker-sweep,
      .motion-in .problem-question-card,
      .motion-in .sentence-visual-wrap,
      .motion-in .sentence-problem-tail,
      .motion-in .daily-price,
      .motion-in .daily-value-copy {
        animation: none;
      }

      .sentence-visual-wrap,
      .sentence-problem-tail,
      .daily-price,
      .daily-value-copy {
        opacity: 1;
        clip-path: none;
        transform: none;
      }

      .night-lead-line {
        opacity: 1;
        transform: none;
        animation: none;
      }

      .bridge-headline,
      .bridge-title-char,
      .bridge-copy-line,
      .bridge-stat-card,
      .bridge-copy {
        opacity: 1;
        transform: none;
        animation: none;
      }
    }

    .duo-title {
      font-size: clamp(32px, 6.4vw, 46px);
      line-height: 1.32;
      font-weight: 950;
      letter-spacing: -0.005em;
    }

    .duo-after {
      margin: 0;
      font-size: clamp(32px, 6.4vw, 46px);
      line-height: 1.34;
      font-weight: 950;
      letter-spacing: -0.005em;
    }

    .duo-after-wrap {
      margin-top: 56px;
    }

    @media (max-width: 520px) {
      .duo-after-wrap {
        margin-top: 42px;
      }
    }

    .gif-placeholder {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 100%;
      min-height: 360px;
      margin-top: 48px;
      border-radius: 8px;
      background: #f1f3f5;
      border: 2px dashed #c4cad2;
      color: #98a2b3;
      font-size: 22px;
      font-weight: 950;
      letter-spacing: 0.04em;
    }

    .sentence-step {
      align-items: flex-start;
      justify-content: center;
    }

    .sentence-step-title {
      max-width: 560px;
    }

    .sentence-placeholder {
      min-height: 420px;
      border-radius: 22px;
      border: 2px dashed rgba(14, 93, 79, 0.25);
      background:
        radial-gradient(circle at 50% 45%, rgba(255, 216, 92, 0.22), transparent 32%),
        linear-gradient(135deg, rgba(14, 93, 79, 0.06), rgba(238, 120, 27, 0.06)),
        #f8fafc;
      color: #8390a3;
      text-align: center;
      box-shadow: 0 22px 54px rgba(17, 24, 39, 0.08);
    }

    .sentence-output .sentence-placeholder {
      background:
        radial-gradient(circle at 50% 45%, rgba(255, 216, 92, 0.28), transparent 32%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(255, 249, 239, 0.76)),
        #fff;
      border-color: rgba(238, 120, 27, 0.24);
    }

    @media (max-width: 520px) {
      .gif-placeholder {
        min-height: 300px;
        font-size: 18px;
        margin-top: 36px;
      }

      .sentence-placeholder {
        min-height: 320px;
        border-radius: 18px;
      }

      .worksheet-demo-video {
        width: calc(100% + 32px);
        margin: 36px -16px 0;
        border-radius: 10px;
      }
    }

    .subject-pool {
      margin-top: 48px;
      padding: 30px 22px 36px;
      border-radius: 10px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: 0 14px 32px rgba(17, 24, 39, 0.06);
      text-align: center;
    }

    .subject-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .subject-chip {
      padding: 10px 16px;
      border-radius: 8px;
      background: #f5f3ee;
      color: var(--ink);
      font-size: 18px;
      line-height: 1;
      font-weight: 950;
    }

    .converge-arrow {
      display: block;
      margin: 22px 0 18px;
      color: var(--muted);
      font-size: 28px;
      line-height: 1;
      font-weight: 950;
    }

    .predicate-chip {
      display: inline-block;
      padding: 12px 22px 16px;
      background: var(--yellow);
      color: var(--ink);
      font-size: 36px;
      font-weight: 950;
      line-height: 1;
      letter-spacing: -0.01em;
    }

    @media (max-width: 520px) {
      .subject-pool {
        margin-top: 38px;
        padding: 26px 18px 32px;
      }

      .subject-chip {
        padding: 9px 13px;
        font-size: 16px;
      }

      .predicate-chip {
        font-size: 30px;
        padding: 10px 18px 13px;
      }
    }

    /* v13 additions: real program video, evidence blocks */
    .product-video {
      display: block;
      width: calc(100% + 54px);
      height: auto;
      margin: 44px -27px 0;
      border-radius: 14px;
      border: 0;
      background:
        linear-gradient(135deg, rgba(255, 216, 92, 0.2), rgba(13, 94, 72, 0.08)),
        #fffaf0;
      box-shadow: 0 22px 58px rgba(17, 24, 39, 0.14);
    }

    .feature-video {
      margin-top: 50px;
    }

    .sentence-step-video + .sentence-step-video {
      margin-top: 34px;
    }

    .sentence-infographic {
      display: block;
      width: 100%;
      max-width: 640px;
      margin: 56px auto 0;
      border-radius: 8px;
      box-shadow: var(--shadow);
    }

    .center-title {
      text-align: center;
    }

    .video-note {
      margin-top: 16px;
      color: #667085;
      font-size: 14px;
      font-weight: 700;
      text-align: center;
    }

    .source-grid {
      margin-top: 34px;
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .source-card {
      min-height: 124px;
      padding: 22px 18px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--white);
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 8px;
    }

    .source-card b {
      font-size: 21px;
      line-height: 1.25;
      color: var(--ink);
    }

    .source-card span {
      color: #667085;
      font-size: 14px;
      font-weight: 800;
    }

    .value-note {
      margin-top: 28px;
      padding: 22px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.14);
      color: rgba(255, 255, 255, 0.86);
      font-size: 18px;
      font-weight: 800;
      line-height: 1.62;
    }

    .lifetime-value {
      width: 100%;
      margin-top: 26px;
      text-align: center;
    }

    .lifetime-word {
      display: block;
      color: var(--white);
      font-size: clamp(54px, 10vw, 86px);
      line-height: 1.12;
      font-weight: 950;
      letter-spacing: 0;
    }

    .lifetime-arrow {
      display: block;
      margin: 18px 0 14px;
      color: var(--orange);
      font-size: clamp(46px, 8vw, 72px);
      line-height: 1;
      font-weight: 950;
    }

    .lifetime-highlight {
      display: inline-block;
      padding: 8px 18px 12px;
      background: var(--yellow);
      color: #171100;
      font-size: clamp(60px, 11vw, 92px);
      line-height: 1.05;
      font-weight: 950;
      letter-spacing: 0;
    }

    .lifetime-copy {
      margin-top: 34px;
      color: rgba(255, 255, 255, 0.82);
      font-size: clamp(22px, 4vw, 30px);
      line-height: 1.5;
      font-weight: 900;
      text-align: center;
    }

    .product-name-title {
      max-width: 520px;
      color: var(--ink);
      font-size: clamp(70px, 16vw, 112px);
      line-height: 1.12;
      font-weight: 950;
      letter-spacing: -0.02em;
    }

.product-reveal-static {
      min-height: 780px;
      align-items: center;
      justify-content: center;
      padding-top: 22px;
      text-align: center;
      background:
        radial-gradient(circle at 50% 48%, rgba(255, 216, 92, 0.22), transparent 44%),
        var(--paper-2);
    }

    .product-reveal-static .reveal-label {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      align-self: center;
      margin-bottom: 26px;
      min-height: 42px;
      padding: 0 20px;
      font-size: 25px;
      line-height: 1;
      font-weight: 900;
    }

    .product-reveal-static .product-name-title {
      max-width: none;
      margin: 0 auto 48px;
    }

    .product-reveal .reveal-lead {
      font-size: 22px;
      line-height: 1.62;
      font-weight: 900;
    }

    .product-reveal .product-promise {
      font-family: "Pretendard Variable", "Pretendard", sans-serif;
      font-size: clamp(24px, 4.8vw, 32px);
      line-height: 1.5;
      color: var(--ink);
      font-weight: 800;
    }

    .product-reveal-static .reveal-label,
    .product-reveal-static .product-name-title,
    .product-reveal-static .product-promise {
      transform: translateY(34px);
    }

    .product-reveal .product-promise .marker {
      padding-right: 0.08em;
      padding-left: 0.08em;
    }

    .product-ready-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      width: min(100%, 440px);
      margin: 38px auto 0;
    }

    .product-ready-list span {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 0 18px;
      border: 1px solid rgba(17, 24, 39, 0.1);
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.78);
      color: rgba(17, 24, 39, 0.82);
      font-size: 15px;
      line-height: 1;
      font-weight: 900;
      box-shadow: 0 12px 28px rgba(17, 24, 39, 0.06);
    }

    .price-discount {
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      margin-top: 12px;
      padding: 0 13px;
      border-radius: 999px;
      background: #fff1bf;
      color: #805000;
      font-size: 14px;
      font-weight: 900;
    }

    .final-copy {
      margin-top: 28px;
      color: rgba(255, 255, 255, 0.82);
      font-size: 19px;
      font-weight: 800;
      line-height: 1.7;
    }

    @media (max-width: 640px) {
      .source-grid {
        grid-template-columns: 1fr;
      }

      .product-reveal-static {
        min-height: 840px;
        padding-top: 28px;
      }

      .product-reveal-static .product-name-title {
        margin-bottom: 42px;
      }

      .product-reveal-static .reveal-label {
        min-height: 38px;
        padding: 0 18px;
        font-size: 20px;
      }

      .product-reveal .product-promise {
        font-size: clamp(22px, 5.8vw, 25px);
      }

      .product-reveal-static .reveal-label,
      .product-reveal-static .product-name-title,
      .product-reveal-static .product-promise {
        transform: translateY(26px);
      }

      .product-ready-list {
        gap: 8px;
        margin-top: 30px;
      }

      .product-ready-list span {
        min-height: 38px;
        padding: 0 14px;
        font-size: 14px;
      }

      .product-video {
        width: calc(100% + 32px);
        margin: 34px -16px 0;
        border-radius: 10px;
      }

      .sentence-infographic {
        margin-top: 38px;
      }
    }

    .evidence {
      margin-top: 38px;
      display: grid;
      gap: 12px;
    }

    .evidence-source {
      display: grid;
      grid-template-columns: 64px 1fr;
      gap: 18px;
      align-items: center;
      padding: 22px 22px 24px;
      border-radius: 8px;
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: 0 14px 28px rgba(17, 24, 39, 0.07);
    }

    .evidence-source::before {
      content: "";
      position: absolute;
    }

    .evidence-num {
      font-family: "GmarketSans", "Pretendard Variable", Pretendard, sans-serif;
      color: var(--orange);
      font-size: 46px;
      line-height: 1;
      font-weight: 700;
      text-align: center;
      white-space: nowrap;
      letter-spacing: -0.02em;
    }

    .evidence-source:nth-child(2) .evidence-num { color: var(--teal); }
    .evidence-source:nth-child(3) .evidence-num { color: var(--green); }
    .evidence-source:nth-child(4) .evidence-num { color: #c97a00; }

    .evidence-source > div {
      display: grid;
      gap: 6px;
    }

    .evidence-tag {
      display: inline-flex;
      width: fit-content;
      padding: 4px 9px;
      border-radius: 999px;
      background: rgba(238, 120, 27, 0.12);
      color: var(--orange);
      font-size: 11px;
      font-weight: 950;
      letter-spacing: 0.05em;
    }

    .evidence-source:nth-child(2) .evidence-tag {
      background: rgba(8, 125, 141, 0.12);
      color: var(--teal);
    }

    .evidence-source:nth-child(3) .evidence-tag {
      background: rgba(14, 93, 79, 0.12);
      color: var(--green);
    }

    .evidence-source:nth-child(4) .evidence-tag {
      background: rgba(201, 122, 0, 0.14);
      color: #a36300;
    }

    .evidence-source b {
      color: var(--ink);
      font-size: 22px;
      line-height: 1.3;
      font-weight: 950;
    }

    .evidence-source p {
      color: #475467;
      font-size: 15px;
      line-height: 1.58;
      font-weight: 760;
    }

    .evidence-arrow {
      margin: 18px 0 4px;
      text-align: center;
      color: var(--orange);
      font-size: 30px;
      line-height: 1;
      font-weight: 950;
    }

    .evidence-results {
      padding: 0;
      background: transparent;
      color: var(--ink);
      text-align: center;
    }

    .evidence-results-label {
      display: inline-flex;
      margin-bottom: 22px;
      padding: 11px 20px;
      border-radius: 999px;
      background: rgba(238, 120, 27, 0.14);
      color: var(--orange);
      font-size: clamp(15px, 2.2vw, 17px);
      font-weight: 950;
      letter-spacing: 0.05em;
    }

    .evidence-result-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .evidence-result {
      padding: 28px 14px 30px;
      border-radius: 8px;
      background: var(--white);
      border: 1px solid var(--line);
      border-top: 4px solid var(--orange);
      box-shadow: 0 18px 36px rgba(17, 24, 39, 0.1);
    }

    .evidence-result.green {
      border-top-color: var(--green);
    }

    .evidence-result > span {
      display: block;
      color: var(--muted);
      font-size: 14px;
      font-weight: 900;
      letter-spacing: 0.04em;
    }

    .evidence-result strong {
      display: block;
      margin-top: 12px;
      font-family: "GmarketSans", "Pretendard Variable", Pretendard, sans-serif;
      color: var(--orange);
      font-size: 54px;
      line-height: 1;
      font-weight: 700;
    }

    .evidence-result.green strong {
      color: var(--green);
    }

    .evidence-result strong i {
      display: inline-block;
      margin-left: 3px;
      font-style: normal;
      font-size: 0.4em;
      vertical-align: 0.16em;
      font-weight: 950;
    }

    @media (max-width: 520px) {
      .evidence-source {
        grid-template-columns: 50px 1fr;
        gap: 14px;
        padding: 18px 16px 20px;
      }

      .evidence-num {
        font-size: 36px;
      }

      .evidence-source b {
        font-size: 19px;
      }

      .evidence-source p {
        font-size: 14px;
      }

      .evidence-result {
        padding: 24px 10px 26px;
      }

      .evidence-result strong {
        font-size: 42px;
      }
    }

    /* v15 신규 컷 스타일 */

    /* 03 BAECHU */
    .baechu-cut {
      justify-content: center;
    }

    .baechu-title {
      margin-bottom: 34px;
    }

    .baechu-scene {
      position: relative;
      width: calc(100% + 24px);
      height: 680px;
      margin: 0 -12px;
      overflow: hidden;
      background: #efe7da;
      box-shadow: 0 26px 64px rgba(17, 24, 39, 0.12);
    }

    .baechu-scene::after {
      content: "";
      position: absolute;
      inset: 0;
      box-shadow: inset 0 0 0 1px rgba(230, 222, 208, 0.72);
      pointer-events: none;
    }

    .baechu-photo {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center 35%;
    }

    .baechu-after {
      margin: 38px auto 0;
      font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      font-size: clamp(25px, 4.8vw, 34px);
      line-height: 1.6;
      color: var(--ink);
      font-weight: 650;
      text-align: center;
      opacity: 0;
      transform: translateY(16px);
    }

    .motion-in .baechu-after {
      animation: baechuAfterFade 0.72s ease 0.72s forwards;
    }

    @keyframes baechuAfterFade {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @media (max-width: 520px) {
      .baechu-title {
        margin-bottom: 30px;
      }

      .baechu-scene {
        width: calc(100% + 18px);
        height: 520px;
        margin: 0 -9px;
      }

      .baechu-after {
        margin-top: 34px;
        font-size: 24px;
      }
    }

    /* 04 SENTENCE PROBLEM */
    .title.small.sentence-title {
      font-size: clamp(36px, 6.2vw, 48px);
      margin-bottom: 30px;
      white-space: nowrap;
    }

    .sentence-visual-wrap {
      width: min(100%, 500px);
      margin: 30px auto 28px;
      overflow: hidden;
      opacity: 0;
      transform: translateY(18px) scale(0.985);
    }

    .motion-in .sentence-visual-wrap {
      animation: sentenceVisualIn 0.68s cubic-bezier(0.2, 0.8, 0.2, 1) 0.52s forwards;
    }

    .sentence-visual {
      display: block;
      width: 100%;
      height: auto;
      aspect-ratio: 982 / 768;
      object-fit: cover;
    }

    .motion-in .sentence-title .marker-sweep {
      animation-delay: 0.12s;
    }

    .sentence-problem-tail {
      margin: 0 auto;
      padding: 0;
      max-width: 520px;
      border: 0;
      background: transparent;
      border-radius: 0;
      font-family: "RIDIBatang", "Batang", "Noto Serif KR", serif;
      font-size: clamp(22px, 4.2vw, 32px);
      line-height: 1.5;
      color: var(--ink);
      font-weight: 700;
      text-align: center;
      white-space: nowrap;
      opacity: 0;
      transform: translateY(16px);
    }

    .motion-in .sentence-problem-tail {
      animation: sentenceTailIn 0.68s cubic-bezier(0.2, 0.8, 0.2, 1) 0.52s forwards;
    }

    @keyframes sentenceVisualIn {
      to {
        opacity: 1;
        transform: translateY(0) scale(1);
      }
    }

    @keyframes sentenceTailIn {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @media (max-width: 520px) {
      .title.small.sentence-title {
        font-size: clamp(30px, 8vw, 32px);
      }

      .sentence-visual-wrap {
        width: calc(100% + 44px);
        margin: 30px -22px 26px;
      }
    }

    /* 05 BRIDGE */
    .cut.transition-cut {
      padding-right: 30px;
      padding-left: 30px;
      min-height: 660px;
      justify-content: center;
      gap: 30px;
      background:
        radial-gradient(circle at 50% 34%, rgba(255, 216, 92, 0.16), transparent 34%),
        linear-gradient(180deg, #060b13 0%, #050910 100%);
    }
    .transition-cut::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px),
        linear-gradient(0deg, rgba(255, 255, 255, 0.024) 1px, transparent 1px);
      background-size: 58px 58px;
      opacity: 0.7;
      pointer-events: none;
    }
    .transition-cut::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 120px;
      background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.24));
      pointer-events: none;
    }
    .transition-cut > * {
      position: relative;
      z-index: 1;
    }
    .transition-cut .section-no {
      position: absolute;
      top: 22px;
      right: 22px;
    }

    .bridge-headline {
      margin: 0;
      font-size: clamp(56px, 10.5vw, 78px);
      line-height: 1.12;
      font-weight: 950;
      color: #fff;
      letter-spacing: 0;
      text-shadow: 4px 4px 0 rgba(19, 66, 101, 0.58);
    }
    .bridge-title-line {
      display: block;
      white-space: nowrap;
      overflow: hidden;
    }
    .bridge-title-char {
      display: inline-block;
      opacity: 0;
      transform: translateX(-18px) translateY(8px);
      filter: blur(5px);
      will-change: transform, opacity, filter;
    }

    .transition-cut .bridge-stat {
      display: grid;
      grid-template-columns: 1fr 1fr;
      width: min(100%, 470px);
      gap: 14px;
      margin: 2px auto 0;
    }
    .bridge-stat-card {
      padding: 25px 14px 23px;
      border-radius: 18px;
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.055));
      border: 1px solid rgba(255, 255, 255, 0.18);
      text-align: center;
      box-shadow: 0 18px 42px rgba(0, 0, 0, 0.22);
      backdrop-filter: blur(8px);
    }
    .bridge-stat-card .num {
      display: block;
      font-family: "GmarketSans", "Pretendard Variable", sans-serif;
      font-size: clamp(48px, 8.8vw, 62px);
      font-weight: 700;
      color: var(--yellow);
      line-height: 1;
      letter-spacing: 0;
    }
    .bridge-stat-card .num small {
      font-size: 0.42em;
      margin-left: 2px;
    }
    .bridge-stat-card .label {
      display: block;
      margin-top: 12px;
      font-size: 15px;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.82);
      letter-spacing: 0;
    }

    .bridge-copy {
      margin: 0;
      font-size: clamp(26px, 5.2vw, 34px);
      line-height: 1.44;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.92);
      letter-spacing: 0;
    }
    .bridge-copy strong {
      color: var(--yellow);
      font-weight: 950;
    }
    .bridge-copy-line {
      display: block;
      opacity: 0;
      filter: blur(5px);
      will-change: transform, opacity, filter;
    }
    .bridge-copy-left {
      transform: translateX(-42px);
    }
    .bridge-copy-right {
      transform: translateX(42px);
    }

    @media (max-width: 520px) {
    .cut.transition-cut {
      padding-right: 16px;
      padding-left: 16px;
      min-height: 620px;
      gap: 26px;
    }

      .transition-cut .section-no {
        top: 16px;
        right: 16px;
      }

      .transition-cut .bridge-stat {
        width: 100%;
        gap: 10px;
      }

      .bridge-stat-card {
        padding: 22px 9px 20px;
        border-radius: 15px;
      }

      .bridge-stat-card .label {
        font-size: 13px;
      }

      .bridge-copy {
        font-size: clamp(25px, 6.6vw, 29px);
      }

      .bridge-headline {
        font-size: clamp(48px, 12.4vw, 58px);
      }
    }

    .bridge-stat-card,
    .bridge-copy {
      opacity: 0;
      transform: translateY(18px);
    }
    .motion-in .bridge-title-char {
      animation: bridgeCharReveal 0.42s cubic-bezier(0.16, 1, 0.3, 1) both;
      animation-delay: calc(var(--i) * 0.065s);
    }
    .motion-in .bridge-stat-card {
      animation: bridgeReveal 0.58s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    }
    .motion-in .bridge-stat-card:nth-child(1) {
      animation-delay: 0.82s;
    }
    .motion-in .bridge-stat-card:nth-child(2) {
      animation-delay: 0.82s;
    }
    .motion-in .bridge-copy {
      animation: bridgeReveal 0.01s linear 0.55s forwards;
    }
    .motion-in .bridge-copy-left {
      animation: bridgeSplitLeft 0.62s cubic-bezier(0.16, 1, 0.3, 1) 0.55s both;
    }
    .motion-in .bridge-copy-right {
      animation: bridgeSplitRight 0.62s cubic-bezier(0.16, 1, 0.3, 1) 0.65s both;
    }
    .motion-in .bridge-copy strong {
      animation: bridgePulse 0.62s ease-out 0.85s both;
    }
    @keyframes bridgeReveal {
      from {
        opacity: 0;
        transform: translateY(18px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    @keyframes bridgeCharReveal {
      0% {
        opacity: 0;
        transform: translateX(-18px) translateY(8px);
        filter: blur(6px);
      }
      72% {
        opacity: 1;
        transform: translateX(2px) translateY(0);
        filter: blur(0);
      }
      100% {
        opacity: 1;
        transform: translateX(0) translateY(0);
        filter: blur(0);
      }
    }
    @keyframes bridgeSplitLeft {
      0% {
        opacity: 0;
        transform: translateX(-42px);
        filter: blur(5px);
      }
      74% {
        opacity: 1;
        transform: translateX(3px);
        filter: blur(0);
      }
      100% {
        opacity: 1;
        transform: translateX(0);
        filter: blur(0);
      }
    }
    @keyframes bridgeSplitRight {
      0% {
        opacity: 0;
        transform: translateX(42px);
        filter: blur(5px);
      }
      74% {
        opacity: 1;
        transform: translateX(-3px);
        filter: blur(0);
      }
      100% {
        opacity: 1;
        transform: translateX(0);
        filter: blur(0);
      }
    }
    @keyframes bridgePulse {
      0% {
        text-shadow: 0 0 0 rgba(255, 216, 92, 0);
      }
      48% {
        text-shadow: 0 0 20px rgba(255, 216, 92, 0.36);
      }
      100% {
        text-shadow: 0 0 0 rgba(255, 216, 92, 0);
      }
    }

    /* 09·10 worksheet sections */
    .worksheet-showcase {
      justify-content: flex-start;
      min-height: auto;
      padding-top: 96px;
      padding-bottom: 78px;
    }

    .worksheet-lead {
      max-width: 520px;
      margin-top: 24px;
      font-size: 21px;
      line-height: 1.58;
    }

    .worksheet-capture {
      width: 100%;
      margin: 42px 0 0;
      padding: 0;
      border: 1px solid rgba(17, 24, 39, 0.1);
      border-radius: 20px;
      background: #fff;
      overflow: hidden;
      box-shadow: 0 28px 70px rgba(17, 24, 39, 0.14);
    }

    .worksheet-capture img {
      display: block;
      width: 100%;
      height: auto;
    }

    .worksheet-demo {
      min-height: 800px;
      align-items: center;
      text-align: center;
    }

    .worksheet-demo-title {
      width: 100%;
    }

    .gif-placeholder.rich {
      position: relative;
      margin: 28px 0 0;
      padding: 0;
      border: none;
      background: linear-gradient(135deg, rgba(255, 216, 92, 0.16), rgba(238, 120, 27, 0.1));
      border-radius: 22px;
      overflow: hidden;
    }
    .gif-placeholder.rich .placeholder-frame {
      aspect-ratio: 4 / 3;
      width: 100%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 14px;
      background: repeating-linear-gradient(
        135deg,
        rgba(17, 24, 39, 0.04) 0,
        rgba(17, 24, 39, 0.04) 12px,
        transparent 12px,
        transparent 24px
      );
    }
    .gif-placeholder.rich .play-icon {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: var(--orange);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 12px 28px rgba(238, 120, 27, 0.3);
    }
    .gif-placeholder.rich .play-icon::before {
      content: "▶";
      font-size: 18px;
      margin-left: 4px;
    }
    .gif-placeholder.rich .placeholder-text {
      font-size: 14px;
      font-weight: 700;
      color: var(--ink);
      letter-spacing: 0.02em;
    }
    .gif-placeholder.rich .placeholder-sub {
      margin-top: -6px;
      font-size: 12px;
      color: var(--muted);
    }
    .activity-chip-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      padding: 0 18px 18px;
      justify-content: center;
    }
    .activity-chip {
      padding: 7px 13px;
      border-radius: 999px;
      background: #fff;
      border: 1px solid rgba(17, 24, 39, 0.1);
      font-size: 13px;
      font-weight: 600;
      color: var(--ink);
    }

    .worksheet-video-placeholder {
      width: 100%;
      max-width: 520px;
      margin-top: 42px;
      border: 1px solid rgba(238, 120, 27, 0.18);
      background:
        linear-gradient(135deg, rgba(255, 216, 92, 0.22), rgba(238, 120, 27, 0.12)),
        #fffaf0;
      box-shadow: 0 22px 56px rgba(17, 24, 39, 0.12);
    }

    .worksheet-video-placeholder .placeholder-frame {
      aspect-ratio: 16 / 10;
      background:
        radial-gradient(circle at 50% 42%, rgba(255, 216, 92, 0.34), transparent 34%),
        repeating-linear-gradient(
          135deg,
          rgba(17, 24, 39, 0.045) 0,
          rgba(17, 24, 39, 0.045) 12px,
          transparent 12px,
          transparent 24px
        );
    }

    .worksheet-demo-video {
      width: calc(100% + 54px);
      max-width: none;
      margin: 46px -27px 0;
      border-radius: 14px;
      border: 0;
      box-shadow: 0 22px 58px rgba(17, 24, 39, 0.14);
    }

    .worksheet-demo-video + .worksheet-demo-video {
      margin-top: 34px;
    }

    /* 13 RECORD BEFORE/AFTER */
    .ba-row {
      position: relative;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin: 36px 0 0;
    }
    .ba-row::before {
      content: "→";
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--orange);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 700;
      box-shadow: 0 10px 22px rgba(238, 120, 27, 0.3);
      z-index: 2;
    }
    .ba-card {
      padding: 22px 18px;
      border-radius: 18px;
      background: #fff;
      border: 1.5px solid var(--line);
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .ba-card.before {
      background: #f3f1ec;
      color: var(--muted);
    }
    .ba-card.after {
      border-color: var(--orange);
      background: linear-gradient(180deg, #fff, #fff5ec);
      box-shadow: 0 16px 36px rgba(238, 120, 27, 0.12);
    }
    .ba-label {
      display: inline-block;
      align-self: flex-start;
      padding: 4px 10px;
      border-radius: 999px;
      background: rgba(17, 24, 39, 0.08);
      font-size: 11px;
      font-weight: 800;
      letter-spacing: 0.06em;
    }
    .ba-card.after .ba-label {
      background: var(--orange);
      color: #fff;
    }
    .ba-card strong {
      font-size: 19px;
      font-weight: 700;
      color: var(--ink);
    }
    .ba-card.before strong {
      color: var(--muted);
    }
    .ba-card p {
      margin: 0;
      font-size: 14px;
      line-height: 1.55;
    }
    .ba-checks {
      display: flex;
      flex-direction: column;
      gap: 6px;
      margin-top: 4px;
    }
    .ba-check {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 500;
    }
    .ba-check::before {
      content: "";
      width: 16px;
      height: 16px;
      border-radius: 4px;
      border: 1.5px solid currentColor;
      flex-shrink: 0;
    }
    .ba-card.before .ba-check {
      color: rgba(17, 24, 39, 0.32);
    }
    .ba-card.after .ba-check {
      color: var(--green);
    }
    .ba-card.after .ba-check::before {
      background: var(--green);
      border-color: var(--green);
      content: "✓";
      color: #fff;
      font-size: 11px;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    /* 16 TESTIMONIAL */
    .testimonial-proof {
      min-height: 1180px;
      justify-content: flex-start;
      padding: 76px 30px 64px;
      background: #fffaf0;
      overflow: hidden;
    }
    .testimonial-proof::before {
      content: "";
      position: absolute;
      top: 238px;
      right: 0;
      bottom: 0;
      left: 0;
      background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(14, 93, 79, 0.22)),
        url("../assets/intro/testimonial-background.png") left top / cover no-repeat;
      opacity: 0.54;
      filter: blur(0.8px) saturate(0.88);
      transform: scale(1.01);
      transform-origin: left top;
      pointer-events: none;
    }
    .testimonial-proof::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, #fff 0%, #fff 22%, rgba(255, 250, 240, 0.72) 34%, rgba(255, 250, 240, 0.3) 68%, rgba(255, 250, 240, 0.42) 100%),
        radial-gradient(circle at 50% 42%, rgba(255, 255, 255, 0.38), transparent 44%);
      pointer-events: none;
    }
    .testimonial-proof > :not(.section-no) {
      position: relative;
      z-index: 1;
    }
    .testimonial-proof .section-no {
      position: absolute;
      top: 22px;
      right: 22px;
      z-index: 4;
    }
    .testimonial-proof-copy {
      text-align: center;
    }
    .testimonial-proof-title {
      color: #111827;
      text-shadow: 0 2px 20px rgba(255, 255, 255, 0.8);
    }
    .testimonial-card-stack {
      display: flex;
      flex-direction: column;
      gap: 26px;
      margin-top: 44px;
    }
    .testimonial-review-card {
      width: 88%;
      margin: 0;
      padding: 24px 24px 26px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.96);
      border: 1px solid rgba(17, 24, 39, 0.08);
      box-shadow: 0 22px 52px rgba(17, 24, 39, 0.18);
      opacity: 0;
      transform: translateY(20px);
      backdrop-filter: blur(8px);
    }
    .testimonial-review-card:nth-child(even) {
      align-self: flex-end;
    }
    .testimonial-review-card:nth-child(odd) {
      border-left: 1px solid rgba(17, 24, 39, 0.08);
    }
    .testimonial-review-card:nth-child(even) {
      border-right: 1px solid rgba(17, 24, 39, 0.08);
    }
    .review-card-head {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-bottom: 15px;
      margin-bottom: 18px;
      border-bottom: 1px solid rgba(17, 24, 39, 0.09);
    }
    .review-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #e8f2ee;
      color: #0e5d4f;
      font-size: 20px;
      font-weight: 900;
    }
    .review-stars {
      display: block;
      color: #f8b400;
      font-size: 22px;
      line-height: 1;
      letter-spacing: 1px;
    }
    .testimonial-review-card cite {
      display: block;
      margin-top: 5px;
      color: #8a94a3;
      font-style: normal;
      font-size: 15px;
      font-weight: 800;
    }
    .testimonial-review-card strong {
      display: block;
      color: #111827;
      font-size: 24px;
      line-height: 1.34;
      font-weight: 950;
      letter-spacing: 0;
      word-break: keep-all;
    }
    .testimonial-review-card p {
      margin: 15px 0 0;
      color: #374151;
      font-size: 18px;
      line-height: 1.68;
      font-weight: 750;
      letter-spacing: 0;
      word-break: keep-all;
    }
    .testimonial-review-card mark {
      padding: 0 3px 2px;
      background: linear-gradient(180deg, transparent 52%, rgba(255, 216, 87, 0.68) 0);
      color: inherit;
    }
    .motion-in .testimonial-review-card {
      animation: testimonialCardIn 0.62s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
    }
    .motion-in .testimonial-review-card:nth-child(1) { animation-delay: 0.08s; }
    .motion-in .testimonial-review-card:nth-child(2) { animation-delay: 0.24s; }
    .motion-in .testimonial-review-card:nth-child(3) { animation-delay: 0.4s; }
    .motion-in .testimonial-review-card:nth-child(4) { animation-delay: 0.56s; }
    @keyframes testimonialCardIn {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    /* 17 PRICE ANCHOR */
    .price-anchor-section {
      background: #fff;
      color: var(--ink);
    }
    .price-anchor-section .section-no {
      position: absolute;
      top: 22px;
      right: 22px;
      z-index: 4;
      color: rgba(17, 24, 39, 0.34);
    }
    .price-anchor-section .lead {
      color: #263244;
    }
    .anchor-row {
      display: grid;
      grid-template-columns: 1fr;
      gap: 14px;
      margin: 32px 0 0;
      position: relative;
    }
    .anchor-card {
      position: relative;
      padding: 24px 22px 22px;
      border-radius: 20px;
      background: #fff;
      border: 1.5px solid var(--line);
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .anchor-card.legacy {
      background: rgba(244, 239, 229, 0.92);
      color: #5b6473;
      border-color: rgba(117, 99, 73, 0.22);
      box-shadow: 0 18px 44px rgba(117, 99, 73, 0.12);
    }
    .anchor-card.master {
      border-color: var(--green);
      background: linear-gradient(180deg, #fff, #f3fbf6);
      box-shadow: 0 22px 52px rgba(14, 93, 79, 0.16);
    }
    .anchor-label {
      align-self: flex-start;
      padding: 5px 12px;
      border-radius: 999px;
      background: rgba(17, 24, 39, 0.08);
      font-size: 11px;
      font-weight: 800;
      letter-spacing: 0.06em;
    }
    .anchor-card.master .anchor-label {
      background: var(--green);
      color: #fff;
    }
    .anchor-card ul {
      margin: 0;
      padding: 0;
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
      font-size: 15px;
      line-height: 1.55;
    }
    .anchor-card ul li {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      gap: 10px;
    }
    .anchor-card ul em {
      font-style: normal;
      font-weight: 700;
      color: var(--ink);
      white-space: nowrap;
    }
    .anchor-card.master ul em {
      color: var(--green);
    }
    .anchor-total {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      padding: 14px 0 4px;
      border-top: 1px dashed rgba(17, 24, 39, 0.18);
    }
    .anchor-total span {
      font-size: 13px;
      font-weight: 700;
      color: var(--muted);
      letter-spacing: 0.02em;
    }
    .anchor-total strong {
      font-family: "GmarketSans", "Pretendard Variable", sans-serif;
      font-size: 30px;
      font-weight: 700;
      color: var(--ink);
      letter-spacing: -0.02em;
    }
    .anchor-card.master .anchor-total strong {
      color: var(--green);
    }
    .anchor-note {
      margin: 0;
      font-family: "Pretendard Variable", Pretendard, sans-serif;
      font-size: 17px;
      line-height: 1.58;
      color: var(--ink);
      text-align: center;
      font-weight: 800;
      letter-spacing: 0;
    }
    .anchor-note-highlight span {
      padding: 0 0.06em 0.03em;
      background: linear-gradient(180deg, transparent 56%, rgba(255, 216, 92, 0.82) 0);
    }
    .anchor-vs {
      align-self: center;
      justify-self: center;
      margin: -6px 0;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #111827;
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: "GmarketSans", sans-serif;
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0.02em;
      box-shadow: 0 12px 28px rgba(17, 24, 39, 0.28);
      position: relative;
      z-index: 2;
    }
    @media (min-width: 720px) {
      .anchor-row {
        grid-template-columns: 1fr 1fr;
        align-items: stretch;
      }
      .anchor-vs {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        margin: 0;
      }
    }

    /* 18 EARLYBIRD offer */
    .earlybird-offer {
      align-items: center;
      justify-content: center;
      text-align: center;
      background: #f0f1f3;
    }
    .offer-poster {
      width: 100%;
    }
    .offer-overline {
      color: #d7dbe2;
      font-size: 22px;
      line-height: 1;
      font-weight: 900;
    }
    .earlybird-poster-title {
      margin-top: 10px;
      color: #101820;
      font-size: clamp(46px, 9vw, 70px);
      line-height: 1.05;
      font-weight: 950;
      letter-spacing: 0;
    }
    .earlybird-poster-title span {
      color: #0e5d4f;
    }
    .reward-card {
      width: 100%;
      margin-top: 42px;
      padding: 38px 30px 30px;
      border-radius: 32px;
      background: #fff;
      box-shadow: 0 28px 70px rgba(17, 24, 39, 0.12);
      color: #111827;
    }
    .deadline-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .past-badge,
    .reward-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      border-radius: 999px;
      line-height: 1.25;
      font-weight: 950;
    }
    .past-badge {
      padding: 10px 16px;
      border: 1px solid rgba(105, 115, 134, 0.18);
      background: #eef0f3;
      color: #697386;
      font-size: 14px;
    }
    .reward-badge {
      padding: 10px 22px;
      background: #0e5d4f;
      color: #fff;
      font-size: 18px;
    }
    .reward-card h3 {
      margin-top: 28px;
      font-size: clamp(34px, 7vw, 52px);
      line-height: 1.18;
      font-weight: 950;
      letter-spacing: 0;
    }
    .reward-title-mark {
      padding: 0 0.04em 0.02em;
      background: linear-gradient(180deg, transparent 58%, rgba(255, 216, 92, 0.78) 0);
      box-decoration-break: clone;
      -webkit-box-decoration-break: clone;
    }
    .reward-sub {
      margin-top: 18px;
      color: #555b66;
      font-size: 19px;
      line-height: 1.55;
      font-weight: 800;
    }
    .reward-features {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
      margin-top: 28px;
    }
    .reward-features span {
      min-height: 78px;
      padding: 14px 10px;
      border-radius: 18px;
      background: #fff;
      color: #555b66;
      font-size: 14px;
      line-height: 1.42;
      font-weight: 800;
      border: 1.5px solid rgba(17, 24, 39, 0.1);
      box-shadow: 0 8px 22px rgba(17, 24, 39, 0.045);
    }
    .reward-features strong {
      display: inline-block;
      margin-top: 4px;
      color: #111827;
      font-size: 18px;
      font-weight: 950;
    }
    .reward-price {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 104px;
      align-items: end;
      gap: 18px;
      margin-top: 34px;
    }
    .reward-price-main {
      min-width: 0;
      text-align: center;
    }
    .reward-price-main del {
      display: block;
      color: #838996;
      font-family: "RIDIBatang", "Batang", "Noto Serif KR", serif;
      font-size: 30px;
      line-height: 1.05;
      font-weight: 700;
      text-decoration-thickness: 1.5px;
      text-decoration-color: rgba(131, 137, 150, 0.82);
    }
    .reward-price-main strong {
      display: block;
      margin-top: 12px;
      color: #0e5d4f;
      font-family: "GmarketSans", "Pretendard Variable", sans-serif;
      font-size: clamp(45px, 9vw, 64px);
      line-height: 1;
      font-weight: 700;
      letter-spacing: 0;
      white-space: nowrap;
    }
    .reward-discount {
      width: 104px;
      height: 104px;
      padding: 0 12px;
      border-radius: 20px;
      background: #0e5d4f;
      color: #fff;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-family: "GmarketSans", "Pretendard Variable", sans-serif;
      font-size: 34px;
      line-height: 1;
      font-weight: 700;
      letter-spacing: 0;
    }
    .reward-discount strong {
      font-size: 34px;
      line-height: 1;
      font-weight: 700;
    }
    .reward-discount span {
      font-family: "Pretendard Variable", Pretendard, sans-serif;
      margin-top: 5px;
      font-size: 15px;
      font-weight: 950;
    }
    .deadline-note {
      margin: 24px 0 0;
      color: #093d35;
      font-size: 16px;
      line-height: 1.55;
      font-weight: 950;
    }

    @media (max-width: 520px) {
      .offer-overline {
        font-size: 19px;
      }
      .reward-card {
        margin-top: 34px;
        padding: 32px 18px 24px;
        border-radius: 26px;
      }
      .deadline-row {
        gap: 8px;
      }
      .past-badge,
      .reward-badge {
        width: 100%;
        min-height: 40px;
      }
      .past-badge {
        padding: 10px 14px;
        font-size: 13px;
      }
      .reward-badge {
        padding: 12px 20px;
        font-size: 16px;
      }
      .reward-card h3 {
        margin-top: 24px;
      }
      .reward-sub {
        font-size: 16px;
      }
      .reward-price {
        grid-template-columns: minmax(0, 1fr) 88px;
        gap: 12px;
      }
      .reward-price-main strong {
        font-size: clamp(34px, 9.6vw, 40px);
      }
      .reward-discount {
        width: 88px;
        height: 88px;
        padding: 0 9px;
        font-size: 29px;
      }
    }

    /* 19 DAILY VALUE */
    .daily-value-section {
      align-items: center;
      justify-content: center;
      text-align: center;
      background: #eff8f3;
      overflow: hidden;
    }
    .daily-value-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 18% 14%, rgba(14, 93, 79, 0.08), transparent 34%),
        radial-gradient(circle at 82% 78%, rgba(255, 216, 92, 0.14), transparent 32%);
      pointer-events: none;
    }
    .daily-simple {
      position: relative;
      z-index: 1;
      width: 100%;
    }
    .daily-kicker {
      margin: 0;
      color: #273142;
      font-size: clamp(24px, 5vw, 34px);
      line-height: 1.2;
      font-weight: 650;
      letter-spacing: 0;
    }
    .daily-price {
      display: block;
      margin-top: 18px;
      color: #0e5d4f;
      font-family: "GmarketSans", "Pretendard Variable", sans-serif;
      font-size: clamp(76px, 16vw, 124px);
      line-height: 1.08;
      font-weight: 700;
      letter-spacing: 0;
      white-space: nowrap;
      padding-top: 0.03em;
      opacity: 0;
      clip-path: inset(0 100% 0 0);
    }
    .daily-rule {
      display: block;
      width: 86px;
      height: 1px;
      margin: 30px auto 26px;
      background: rgba(17, 24, 39, 0.26);
    }
    .daily-value-copy {
      margin: 0;
      color: var(--ink);
      font-size: clamp(24px, 5vw, 33px);
      line-height: 1.62;
      font-weight: 560;
      letter-spacing: 0;
      opacity: 0;
      clip-path: inset(0 100% 0 0);
    }
    .motion-in .daily-price {
      animation: dailySweepReveal 0.72s cubic-bezier(0.16, 1, 0.3, 1) 0.08s both;
    }
    .motion-in .daily-value-copy {
      animation: dailyFadeIn 0.58s ease-out 0.48s both;
    }
    @keyframes dailySweepReveal {
      0% {
        opacity: 1;
        clip-path: inset(0 100% 0 0);
      }
      100% {
        opacity: 1;
        clip-path: inset(0 0 0 0);
      }
    }
    @keyframes dailyFadeIn {
      0% {
        opacity: 0;
        clip-path: inset(0 0 0 0);
        transform: translateY(10px);
      }
      100% {
        opacity: 1;
        clip-path: inset(0 0 0 0);
        transform: translateY(0);
      }
    }
    @media (max-width: 520px) {
      .daily-price {
        font-size: clamp(66px, 18vw, 94px);
      }
      .daily-rule {
        margin: 24px auto 22px;
      }
    }

    /* ========================================
       07 PROOF PEOPLE
       ======================================== */
    .proof-people-section {
      background: #ffffff;
      padding: 84px 32px 64px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 36px;
    }
    .proof-people-copy { text-align: center; }
    .proof-people-title {
      margin: 0;
      font-size: clamp(28px, 4.6vw, 38px);
      font-weight: 900;
      color: var(--ink);
      letter-spacing: -0.005em;
      line-height: 1.3;
    }
    .proof-people-sub {
      margin: 18px 0 0;
      font-size: clamp(17px, 2.8vw, 21px);
      font-weight: 700;
      color: #475467;
      line-height: 1.55;
    }
    .instructor-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      width: 100%;
      max-width: 880px;
    }
    .instructor-card {
      background: #fafbff;
      border: 1px solid #e6e8ef;
      border-radius: 14px;
      padding: 28px 24px 26px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .instructor-card .photo-slot {
      width: 96px;
      height: 96px;
      border-radius: 50%;
      background: #e6e8ef;
      margin: 0 auto 8px;
    }
    .instructor-card .role {
      display: block;
      font-size: 13px;
      font-weight: 700;
      color: #6b7280;
      text-align: center;
      letter-spacing: 0.01em;
    }
    .instructor-card h3 {
      margin: 0;
      font-size: 26px;
      font-weight: 900;
      color: var(--ink);
      text-align: center;
      letter-spacing: -0.01em;
    }
    .instructor-card .instructor-tag {
      margin: 4px auto 6px;
      text-align: center;
      font-size: 12px;
      font-weight: 800;
      color: #b45309;
      background: #fef3c7;
      border-radius: 999px;
      padding: 5px 12px;
      align-self: center;
    }
    .instructor-card .label {
      margin-top: 14px;
      font-size: 11px;
      font-weight: 800;
      color: #6b7280;
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }
    .instructor-card ul {
      margin: 6px 0 0;
      padding: 0;
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .instructor-card ul li {
      position: relative;
      padding-left: 12px;
      font-size: 14px;
      font-weight: 500;
      color: #374151;
      line-height: 1.55;
    }
    .instructor-card ul li::before {
      content: "";
      position: absolute;
      left: 2px;
      top: 9px;
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: #94a3b8;
    }
    .proof-people-narrative {
      max-width: 720px;
      margin: 12px 0 0;
      font-family: "RIDIBatang", "Batang", "Noto Serif KR", serif;
      font-size: clamp(16px, 2.4vw, 19px);
      line-height: 1.78;
      font-weight: 400;
      color: #1f2937;
      text-align: center;
    }
    @media (max-width: 520px) {
      .proof-people-section {
        padding: 60px 18px 48px;
        gap: 28px;
      }
      .instructor-grid {
        grid-template-columns: 1fr;
        gap: 18px;
      }
      .instructor-card { padding: 24px 18px; }
      .instructor-card h3 { font-size: 22px; }
      .proof-people-narrative {
        font-size: 15px;
        line-height: 1.7;
      }
    }

    /* ========================================
       08 PROOF NUMBERS
       ======================================== */
    .proof-numbers-section {
      background: #faf7ef;
      padding: 84px 32px 64px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 32px;
    }
    .proof-numbers-title {
      margin: 0;
      font-size: clamp(30px, 5vw, 42px);
      font-weight: 900;
      color: var(--ink);
      text-align: center;
      letter-spacing: -0.01em;
    }
    .proof-stat {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 16px;
      width: 100%;
      max-width: 880px;
    }
    .proof-stat-card {
      background: #ffffff;
      border: 1px solid #ecd9b0;
      border-radius: 16px;
      padding: 30px 18px 26px;
      text-align: center;
      box-shadow: 0 6px 18px rgba(120, 80, 0, 0.06);
      display: flex;
      flex-direction: column;
      gap: 6px;
      align-items: center;
    }
    .proof-stat-card .num {
      display: block;
      font-family: "GmarketSans", "Pretendard Variable", sans-serif;
      font-size: clamp(42px, 7vw, 58px);
      font-weight: 800;
      color: #b45309;
      line-height: 1;
      letter-spacing: 0;
    }
    .proof-stat-card .num-text {
      font-size: clamp(26px, 4vw, 34px);
    }
    .proof-stat-card .num small {
      font-size: 0.42em;
      margin-left: 2px;
    }
    .proof-stat-card .stat-label {
      display: block;
      margin-top: 6px;
      font-size: 15px;
      font-weight: 800;
      color: var(--ink);
      letter-spacing: 0;
    }
    .proof-stat-card .stat-sub {
      display: block;
      margin-top: 2px;
      font-size: 13px;
      font-weight: 500;
      color: #6b5d3f;
      line-height: 1.5;
    }
    .proof-belt {
      width: 100%;
      max-width: 880px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      padding: 18px 22px;
      background: rgba(255, 255, 255, 0.6);
      border: 1px solid #e8d9b8;
      border-radius: 12px;
    }
    .proof-belt-row {
      display: flex;
      gap: 10px;
      align-items: baseline;
      font-size: 13px;
      line-height: 1.55;
      color: #4b5563;
    }
    .proof-belt-row strong {
      font-size: 13px;
      font-weight: 800;
      color: #92400e;
      flex-shrink: 0;
      min-width: 84px;
    }
    .proof-numbers-tail {
      margin: 8px 0 0;
      font-family: "RIDIBatang", "Batang", "Noto Serif KR", serif;
      font-size: clamp(20px, 3.4vw, 26px);
      font-weight: 400;
      color: var(--ink);
      text-align: center;
      line-height: 1.55;
    }
    @media (max-width: 520px) {
      .proof-numbers-section {
        padding: 60px 18px 48px;
        gap: 24px;
      }
      .proof-stat {
        grid-template-columns: 1fr;
        gap: 12px;
      }
      .proof-stat-card { padding: 24px 14px 22px; }
      .proof-belt-row {
        flex-direction: column;
        gap: 2px;
      }
      .proof-belt-row strong { min-width: auto; }
    }

    /* ========================================
       07 WHO WE ARE — 스토리 메인
       ======================================== */
    .who-we-are-section {
      background: #ffffff;
      padding: 96px 32px 80px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 40px;
    }
    .who-story-headline {
      margin: 0;
      max-width: 760px;
      font-size: clamp(32px, 5.4vw, 46px);
      font-weight: 900;
      color: var(--ink);
      text-align: center;
      line-height: 1.32;
      letter-spacing: -0.01em;
    }
    .who-story-body {
      max-width: 660px;
      display: flex;
      flex-direction: column;
      gap: 22px;
    }
    .who-story-paragraph {
      margin: 0;
      font-family: "RIDIBatang", "Batang", "Noto Serif KR", serif;
      font-size: clamp(17px, 2.6vw, 20px);
      line-height: 1.92;
      font-weight: 400;
      color: #1f2937;
      text-align: center;
      letter-spacing: 0.005em;
    }
    .who-story-emph {
      font-weight: 700;
      color: var(--ink);
      border-bottom: 2px solid rgba(180, 83, 9, 0.42);
      padding-bottom: 1px;
    }
    .who-story-closer {
      margin-top: 8px;
      font-size: clamp(20px, 3.2vw, 24px);
      font-weight: 800;
      color: var(--ink);
    }
    @media (max-width: 520px) {
      .who-we-are-section {
        padding: 68px 20px 56px;
        gap: 30px;
      }
      .who-story-paragraph {
        font-size: 16px;
        line-height: 1.85;
        text-align: left;
      }
      .who-story-headline {
        line-height: 1.3;
      }
    }

    /* ========================================
       08 WHO MADE THIS — 간단 프로필
       ======================================== */
    .who-made-this-section {
      background: #fafbfc;
      padding: 72px 32px 84px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 36px;
    }
    .who-profile-intro {
      margin: 0;
      font-size: clamp(15px, 2.2vw, 17px);
      font-weight: 700;
      color: #6b7280;
      text-align: center;
      letter-spacing: 0.04em;
    }
    .who-profile-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      width: 100%;
      max-width: 760px;
    }
    .who-profile-card {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
      padding: 8px 12px;
    }
    .who-profile-photo {
      width: 128px;
      height: 128px;
      border-radius: 50%;
      background: #e6e8ef;
      object-fit: cover;
      margin-bottom: 12px;
    }
    .who-profile-name {
      margin: 0;
      font-size: clamp(22px, 3.2vw, 26px);
      font-weight: 900;
      color: var(--ink);
      letter-spacing: -0.01em;
    }
    .who-profile-role {
      margin: 2px 0 8px;
      font-size: 13px;
      font-weight: 700;
      color: #6b7280;
      letter-spacing: 0.01em;
    }
    .who-profile-line {
      margin: 0;
      font-size: 14px;
      font-weight: 500;
      color: #374151;
      line-height: 1.55;
      text-align: center;
    }
    .who-profile-line.who-profile-edu {
      color: #6b7280;
      font-size: 13px;
    }
    @media (max-width: 520px) {
      .who-made-this-section {
        padding: 56px 20px 64px;
        gap: 28px;
      }
      .who-profile-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .who-profile-photo {
        width: 112px;
        height: 112px;
      }
    }

    /* 08 WHO MADE THIS — 양력 풀버전 추가 */
    .who-profile-headline {
      margin: 4px 0 12px;
      max-width: 720px;
      font-size: clamp(28px, 4.6vw, 38px);
      font-weight: 900;
      color: var(--ink);
      text-align: center;
      line-height: 1.35;
      letter-spacing: -0.01em;
    }
    .who-profile-block {
      width: 100%;
      margin-top: 14px;
      text-align: left;
    }
    .who-profile-block .who-profile-label {
      display: block;
      margin-bottom: 6px;
      font-size: 11px;
      font-weight: 800;
      color: #9ca3af;
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }
    .who-profile-list {
      margin: 0;
      padding: 0;
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 5px;
    }
    .who-profile-list li {
      position: relative;
      padding-left: 12px;
      font-size: 14px;
      font-weight: 500;
      color: #374151;
      line-height: 1.55;
    }
    .who-profile-list li::before {
      content: "";
      position: absolute;
      left: 2px;
      top: 9px;
      width: 4px;
      height: 4px;
      border-radius: 50%;
      background: #94a3b8;
    }
    .who-made-this-section .who-profile-card {
      align-items: flex-start;
      padding: 28px 24px 26px;
      background: #fafbff;
      border: 1px solid #e6e8ef;
      border-radius: 14px;
    }
    .who-made-this-section .who-profile-photo,
    .who-made-this-section .who-profile-name,
    .who-made-this-section .who-profile-role {
      align-self: center;
    }
    @media (max-width: 520px) {
      .who-made-this-section .who-profile-card {
        padding: 24px 18px;
      }
    }

    /* ========================================
       09 PROOF STATS — 인포그래픽
       ======================================== */
    .proof-stats-section {
      background: #faf7ef;
      padding: 88px 32px 88px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 24px;
    }
    .proof-stats-intro {
      margin: 0;
      font-size: clamp(14px, 2.2vw, 16px);
      font-weight: 800;
      color: #b45309;
      letter-spacing: 0.18em;
      text-transform: uppercase;
    }
    .proof-stats-headline {
      margin: 0 0 24px;
      max-width: 760px;
      font-size: clamp(28px, 4.6vw, 40px);
      font-weight: 900;
      color: var(--ink);
      text-align: center;
      line-height: 1.32;
      letter-spacing: -0.01em;
    }
    .proof-stats-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      width: 100%;
      max-width: 640px;
    }
    .proof-stats-item {
      position: relative;
      padding: 36px 18px 30px;
      background: #ffffff;
      border-radius: 18px;
      text-align: center;
      box-shadow: 0 10px 28px rgba(120, 80, 0, 0.07);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
      border-top: 4px solid #b45309;
    }
    .proof-stats-num {
      display: block;
      font-family: "GmarketSans", "Pretendard Variable", sans-serif;
      font-size: clamp(34px, 4.2vw, 46px);
      font-weight: 800;
      color: #b45309;
      line-height: 1;
      letter-spacing: -0.01em;
      white-space: nowrap;
    }
    .proof-stats-num small {
      font-size: 0.46em;
      margin-left: 3px;
      font-weight: 700;
      white-space: nowrap;
    }
    .proof-stats-label {
      display: block;
      margin-top: 4px;
      font-size: 15px;
      font-weight: 800;
      color: var(--ink);
      letter-spacing: 0;
    }
    .proof-stats-sub {
      display: block;
      font-size: 13px;
      font-weight: 500;
      color: #6b5d3f;
      line-height: 1.55;
    }
    @media (max-width: 520px) {
      .proof-stats-section {
        padding: 64px 18px 72px;
        gap: 18px;
      }
      .proof-stats-grid {
        gap: 14px;
      }
      .proof-stats-item {
        padding: 30px 14px 26px;
      }
    }

    /* ========================================
       09 PROOF STATS — 다크 대시보드 톤
       ======================================== */
    .proof-dash-section {
      background: #0f1922;
      color: #f1f5f9;
      padding: 96px 32px 100px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 18px;
    }
    .proof-dash-section .section-no {
      color: rgba(241, 245, 249, 0.45);
    }
    .proof-dash-tag {
      margin: 0;
      font-size: 12px;
      font-weight: 800;
      color: #fbbf24;
      letter-spacing: 0.32em;
    }
    .proof-dash-headline {
      margin: 0 0 28px;
      font-size: clamp(28px, 4.6vw, 42px);
      font-weight: 900;
      color: #ffffff;
      text-align: center;
      line-height: 1.32;
      letter-spacing: -0.01em;
    }
    .proof-dash-grid {
      width: 100%;
      max-width: 760px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }
    .proof-dash-item {
      padding: 36px 20px 32px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 10px;
      text-align: center;
      border-right: 1px solid rgba(255, 255, 255, 0.12);
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }
    .proof-dash-item:nth-child(2n) { border-right: none; }
    .proof-dash-item:nth-child(n+3) { border-bottom: none; }
    .proof-dash-num {
      display: block;
      font-family: "GmarketSans", "Pretendard Variable", sans-serif;
      font-size: clamp(38px, 5vw, 52px);
      font-weight: 800;
      color: #fbbf24;
      line-height: 1;
      letter-spacing: -0.01em;
      white-space: nowrap;
    }
    .proof-dash-num small {
      font-size: 0.42em;
      margin-left: 3px;
      font-weight: 700;
      color: #fde68a;
    }
    .proof-dash-label {
      display: block;
      margin-top: 6px;
      font-size: 14px;
      font-weight: 800;
      color: #ffffff;
      letter-spacing: 0;
    }
    .proof-dash-sub {
      display: block;
      font-size: 12px;
      font-weight: 500;
      color: rgba(241, 245, 249, 0.55);
      line-height: 1.55;
    }
    @media (max-width: 520px) {
      .proof-dash-section {
        padding: 72px 18px 76px;
      }
      .proof-dash-headline {
        margin-bottom: 18px;
      }
      .proof-dash-item {
        padding: 28px 12px 26px;
      }
      .proof-dash-label {
        font-size: 13px;
      }
    }

    /* ========================================
       09 PROOF STATS — Journey 시안
       ======================================== */
    .proof-journey-section {
      background: #0F1419;
      color: #ffffff;
      padding: 56px 20px 52px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 24px;
    }
    .proof-journey-section .section-no {
      color: rgba(255, 255, 255, 0.45);
    }
    .proof-journey-headline {
      margin: 0;
      max-width: 720px;
      font-size: clamp(32px, 5.6vw, 44px);
      font-weight: 700;
      color: #ffffff;
      text-align: center;
      line-height: 1.36;
      letter-spacing: -0.005em;
    }
    .proof-journey-board {
      position: relative;
      width: 100%;
      max-width: 100%;
      padding: 16px 0 8px;
    }
    .proof-journey-divider {
      position: absolute;
      left: 50%;
      top: 0;
      bottom: 0;
      width: 1px;
      background: linear-gradient(to bottom, transparent, rgba(245, 184, 46, 0.4), rgba(245, 184, 46, 0.4), transparent);
      transform: translateX(-50%);
    }
    .proof-journey-grid {
      position: relative;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px 20px;
    }
    .proof-journey-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .proof-journey-item-left {
      text-align: right;
      padding-right: 22px;
      align-items: flex-end;
    }
    .proof-journey-item-right {
      text-align: left;
      padding-left: 22px;
      align-items: flex-start;
    }
    .proof-journey-tag {
      font-size: 13px;
      color: rgba(245, 184, 46, 0.85);
      letter-spacing: 0.12em;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .proof-journey-num-row {
      display: flex;
      align-items: baseline;
      gap: 6px;
    }
    .proof-journey-item-left .proof-journey-num-row {
      justify-content: flex-end;
    }
    .proof-journey-num {
      font-family: "GmarketSans", "Pretendard Variable", sans-serif;
      font-size: clamp(44px, 7vw, 60px);
      font-weight: 600;
      color: #F5B82E;
      line-height: 1;
      letter-spacing: -0.01em;
      white-space: nowrap;
    }
    .proof-journey-unit {
      font-size: clamp(16px, 2.2vw, 18px);
      color: rgba(255, 255, 255, 0.78);
      white-space: nowrap;
    }
    .proof-journey-label {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.65);
      margin-top: 8px;
    }
    .proof-journey-foot {
      margin: 0;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      font-size: clamp(16px, 2.4vw, 19px);
      color: rgba(255, 255, 255, 0.72);
      font-weight: 500;
      line-height: 1.65;
      text-align: center;
      width: 100%;
      max-width: 720px;
    }
    @media (max-width: 520px) {
      .proof-journey-section {
        padding: 44px 14px 40px;
        gap: 20px;
      }
      .proof-journey-board {
        padding: 10px 0 4px;
      }
      .proof-journey-grid {
        gap: 26px 14px;
      }
      .proof-journey-item-left {
        padding-right: 14px;
      }
      .proof-journey-item-right {
        padding-left: 14px;
      }
    }

    .price-notice-section {
      background: #F7F5EF;
      padding: 56px 20px 60px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 24px;
    }
    .price-notice-section .section-no {
      color: rgba(26, 26, 26, 0.45);
    }
    .price-notice-badge {
      display: inline-block;
      background: rgba(255, 90, 40, 0.1);
      color: #C73E0F;
      font-size: clamp(13px, 1.8vw, 15px);
      font-weight: 500;
      padding: 8px 20px;
      border-radius: 999px;
      letter-spacing: 0.01em;
    }
    .price-notice-headline {
      margin: 0;
      max-width: 720px;
      font-size: clamp(32px, 5.6vw, 44px);
      font-weight: 700;
      color: #1a1a1a;
      text-align: center;
      line-height: 1.36;
      letter-spacing: -0.005em;
    }
    .price-notice-regular {
      width: 100%;
      max-width: 720px;
      background: #1a1a1a;
      color: #ffffff;
      border-radius: 18px;
      padding: 40px 28px 36px;
      text-align: center;
      box-sizing: border-box;
    }
    .price-notice-overline {
      margin: 0 0 16px;
      font-size: clamp(13px, 1.8vw, 15px);
      letter-spacing: 0.2em;
      color: rgba(255, 255, 255, 0.5);
      font-weight: 500;
    }
    .price-notice-strike {
      margin: 0 0 12px;
      font-size: clamp(15px, 2vw, 17px);
      color: rgba(255, 255, 255, 0.6);
      text-decoration: line-through;
    }
    .price-notice-amount {
      margin: 0 0 16px;
      display: flex;
      align-items: baseline;
      justify-content: center;
      gap: 8px;
    }
    .price-notice-num {
      font-family: "GmarketSans", "Pretendard Variable", sans-serif;
      font-size: clamp(56px, 8vw, 80px);
      font-weight: 600;
      color: #F5B82E;
      line-height: 1;
      letter-spacing: -0.01em;
    }
    .price-notice-unit {
      font-size: clamp(20px, 2.4vw, 26px);
      color: rgba(255, 255, 255, 0.8);
    }
    .price-notice-regular-foot {
      margin: 0;
      font-size: clamp(14px, 2vw, 17px);
      color: rgba(255, 255, 255, 0.72);
      line-height: 1.6;
    }
    .price-notice-breakdown {
      width: 100%;
      max-width: 720px;
      background: #ffffff;
      border-radius: 16px;
      padding: 36px 28px;
      box-sizing: border-box;
    }
    .price-notice-breakdown-head {
      margin: 0 0 28px;
      font-size: clamp(18px, 2.6vw, 22px);
      font-weight: 500;
      color: #1a1a1a;
      text-align: center;
      line-height: 1.6;
    }
    .price-notice-items {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 22px;
    }
    .price-notice-item {
      display: flex;
      gap: 18px;
      align-items: flex-start;
    }
    .price-notice-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(15, 110, 86, 0.08);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      color: #0F6E56;
    }
    .price-notice-icon svg {
      width: 22px;
      height: 22px;
    }
    .price-notice-item strong {
      display: block;
      margin-bottom: 4px;
      font-size: clamp(15px, 2vw, 17px);
      font-weight: 600;
      color: #1a1a1a;
    }
    .price-notice-item p {
      margin: 0;
      font-size: clamp(13px, 1.8vw, 15px);
      color: #666;
      line-height: 1.55;
    }
    .price-notice-current {
      margin: 0;
      width: 100%;
      max-width: 720px;
      background: rgba(245, 184, 46, 0.15);
      border: 1px solid rgba(245, 184, 46, 0.4);
      border-radius: 14px;
      padding: 30px 28px;
      text-align: center;
      font-size: clamp(18px, 2.8vw, 22px);
      color: #1a1a1a;
      line-height: 1.7;
      box-sizing: border-box;
    }
    .price-current-main,
    .price-current-sub {
      display: block;
    }
    .current-mobile-break {
      display: none;
    }
    .price-notice-current strong {
      color: #0F6E56;
      font-weight: 600;
      font-size: clamp(22px, 3.4vw, 28px);
    }
    .price-current-sub {
      margin-top: 8px;
      font-size: clamp(14px, 2vw, 16px);
      color: #666;
    }
    @media (max-width: 520px) {
      .price-notice-section {
        padding: 44px 14px 48px;
        gap: 20px;
      }
      .price-notice-regular {
        padding: 32px 20px 28px;
      }
      .price-notice-breakdown {
        padding: 28px 20px;
      }
      .price-notice-items {
        gap: 18px;
      }
      .price-notice-item {
        gap: 14px;
      }
      .price-notice-current {
        padding: 24px 20px;
      }
      .price-current-main {
        max-width: 260px;
        margin: 0 auto;
      }
      .current-mobile-break {
        display: block;
      }
    }

/* ==========================================================================
   word 환경 호환 보강 (2026-05-13 detail-v15 이식 시 추가, 2026-05-13 후속 갱신)
   - 데스크톱은 기존 .nav-bar 사용 → intro-m-top 숨김
   - 모바일은 .nav-bar가 좁은 폭에서 깨지므로 숨기고 intro-m-top 노출
     (다른 학습 화면 wlm-top/mwb-top과 동일한 홈 버튼 + 타이틀 패턴)
   - detail-frame 자체가 max-width 620px라 본문은 그대로 자연스럽게 좁아짐
   ========================================================================== */
#screen-intro .intro-m-top {
  display: none;
}

@media screen and (max-width: 899px) {
  #screen-intro .nav-bar {
    display: none !important;
  }
  #screen-intro .intro-m-top {
    display: block;
    position: sticky;
    top: 0;
    z-index: 30;
    background: #fff;
    border-bottom: 1px solid #E8E2D9;
    padding-top: env(safe-area-inset-top, 0);
  }
  #screen-intro .intro-m-top-row {
    display: grid;
    grid-template-columns: 40px 1fr auto;
    align-items: center;
    min-height: 48px;
    padding: 6px 12px;
    gap: 8px;
  }
  #screen-intro .intro-m-top-back {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #1E293B;
    text-decoration: none;
    border-radius: 50%;
  }
  #screen-intro .intro-m-top-back:active {
    background: #F4EFE5;
  }
  #screen-intro .intro-m-top-back svg {
    width: 22px;
    height: 22px;
  }
  #screen-intro .intro-m-title {
    text-align: center;
    font-size: 16px;
    font-weight: 800;
    color: #1E293B;
    letter-spacing: -0.01em;
  }
  #screen-intro .intro-m-top-spacer {
    width: 40px;
  }
  /* 회의안 9차 후속: 모바일 intro 우측 상단 로그인 토글.
     데스크톱 nav 의 로그인 토글이 모바일에서는 nav hidden 이라 없던 것을 보강.
     구매자 광고 진입 시 1 클릭으로 로그인 가능. intro 결제 CTA 와 시각 위계 분리. */
  #screen-intro .intro-m-top-auth {
    font-size: 14px;
    font-weight: 700;
    color: #1E293B;
    padding: 9px 16px;
    background: transparent;
    border: 1.5px solid #C8BFA8;
    border-radius: 999px;
    cursor: pointer;
    user-select: none;
    line-height: 1;
    font-family: inherit;
    white-space: nowrap;
  }
  #screen-intro .intro-m-top-auth:active {
    background: #F4EFE5;
  }
}

/* 기관 구매 진입점 — FAQ 링크 + 최종 CTA 아래 보조 한 줄.
   #screen-intro .detail-frame a 규칙(색 inherit·밑줄 제거)을 이기게 id 스코프로 둔다. */
#screen-intro .detail-frame a.org-faq-link {
  color: #2f8f63;
  font-weight: 700;
  text-decoration: underline;
}
#screen-intro .org-entry-line {
  margin: 22px auto 0;
  max-width: 560px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.62);
  text-align: center;
}
#screen-intro .detail-frame .org-entry-line a {
  color: rgba(255, 255, 255, 0.92);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  white-space: nowrap;
}