:root {
      --bg: #f6faf6;
      --panel: #ffffff;
      --text: #1e2a22;
      --muted: #6a786f;
      --line: #dbe8dd;
      --soft: #edf6ef;
      --accent: #6c8d71;
      --accent-strong: #4d6a53;
      --shadow: 0 16px 40px rgba(47, 73, 55, 0.08);
      --radius: 22px;
      --shell-pad-x: 16px;
      --shell-pad-top: 24px;
      --shell-pad-bottom: 56px;
    }

    * { box-sizing: border-box; }
    html, body {
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }
    body {
      font-family: "Noto Sans SC", "Noto Sans JP", "Noto Sans KR", "Noto Sans Thai", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background:
        radial-gradient(circle at top left, #f8fff8 0, #f6faf6 36%, #f2f7f3 100%);
      color: var(--text);
      min-height: 100vh;
    }

    .shell {
      max-width: 980px;
      margin: 0 auto;
      padding: var(--shell-pad-top) var(--shell-pad-x) var(--shell-pad-bottom);
    }

    .card {
      background: var(--panel);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }

    .hero {
      padding: 28px;
      margin-top: 20px;
      overflow: hidden;
      position: relative;
    }

    .hero::after {
      content: "";
      position: absolute;
      right: -60px;
      top: -60px;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      background: linear-gradient(180deg, rgba(127, 165, 134, 0.18), rgba(127, 165, 134, 0.02));
      pointer-events: none;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      color: var(--accent-strong);
      border: 1px solid var(--line);
      background: var(--soft);
      border-radius: 999px;
      padding: 8px 12px;
      margin-bottom: 16px;
    }

    h1, h2, h3, p { margin: 0; }
    .hero h1 {
      font-size: clamp(28px, 5vw, 52px);
      line-height: 1.08;
      letter-spacing: -0.03em;
      max-width: 680px;
    }
    .hero .sub {
      margin-top: 14px;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.75;
      max-width: 720px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.3fr 0.9fr;
      gap: 18px;
      align-items: stretch;
      margin-top: 24px;
    }

    .mini-panel {
      padding: 18px;
      border-radius: 18px;
      border: 1px solid var(--line);
      background: linear-gradient(180deg, #fbfefb, #f3f8f4);
    }

    .mini-panel h3 {
      font-size: 15px;
      margin-bottom: 10px;
    }

    .mini-panel ul {
      margin: 0;
      padding-left: 18px;
      color: var(--muted);
      line-height: 1.8;
      font-size: 14px;
    }

        .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 22px;
    }
    .hero-minimal {
      min-height: 48vh;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      padding: 42px 20px;
    }
    .hero-minimal::after { display: none; }
    .hero-minimal h1 {
      max-width: none;
      margin: 0;
    }
    .hero-actions-single {
      justify-content: center;
      margin-top: 28px;
    }

    #intro {
      width: 100vw;
      margin-left: calc(50% - 50vw);
      margin-right: calc(50% - 50vw);
      margin-top: calc(-1 * var(--shell-pad-top));
      margin-bottom: calc(-1 * var(--shell-pad-bottom));
      min-height: calc(100svh + var(--shell-pad-top) + var(--shell-pad-bottom));
      position: relative;
      overflow: hidden;
      background:
        radial-gradient(1200px 500px at 78% -10%, rgba(119, 157, 127, 0.38), transparent 65%),
        radial-gradient(840px 440px at 10% 110%, rgba(91, 122, 98, 0.32), transparent 68%),
        linear-gradient(120deg, #0f1612 0%, #1f2f26 56%, #2d4033 100%);
      color: #edf4ef;
    }

    #intro::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
      background-size: 72px 72px;
      opacity: 0.2;
      pointer-events: none;
    }

    #intro::after {
      content: "";
      position: absolute;
      right: -140px;
      top: -160px;
      width: 520px;
      height: 520px;
      border-radius: 50%;
      background: radial-gradient(circle at 35% 30%, rgba(190, 220, 194, 0.32), rgba(190, 220, 194, 0.04) 62%, rgba(190, 220, 194, 0) 76%);
      filter: blur(2px);
      pointer-events: none;
      animation: introFloat 9s ease-in-out infinite;
    }

    .intro-hero {
      min-height: 100svh;
      display: flex;
      align-items: center;
      padding: clamp(56px, 10vw, 112px) 0;
      position: relative;
      z-index: 1;
    }

    .intro-inner {
      width: min(760px, calc(100% - 56px));
      margin: 0 auto;
    }

    .intro-brand {
      margin: 0;
      font-size: 12px;
      letter-spacing: 0.26em;
      text-transform: uppercase;
      color: rgba(237, 244, 239, 0.82);
      animation: introRise 0.58s ease-out both;
    }

    .intro-official {
      position: relative;
      margin-top: 14px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 16px;
      border-radius: 999px;
      border: 1px solid rgba(217, 183, 112, 0.72);
      background:
        radial-gradient(circle at 16% 20%, rgba(208, 170, 95, 0.24), rgba(208, 170, 95, 0) 42%),
        linear-gradient(140deg, rgba(22, 18, 13, 0.94) 0%, rgba(12, 10, 7, 0.96) 56%, rgba(26, 20, 13, 0.9) 100%);
      color: #f0d8a9;
      box-shadow:
        inset 0 1px 0 rgba(255, 241, 207, 0.15),
        inset 0 -1px 0 rgba(130, 95, 45, 0.38),
        0 12px 32px rgba(7, 6, 4, 0.36);
      backdrop-filter: blur(8px);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.055em;
      white-space: nowrap;
      overflow: hidden;
      animation: introRise 0.66s ease-out 0.05s both;
    }

    .intro-official-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: radial-gradient(circle at 38% 32%, #ffe6b8 0%, #c79b52 62%, #8b652f 100%);
      box-shadow: 0 0 0 4px rgba(212, 167, 94, 0.22);
      flex: none;
    }

    .intro-official::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(104deg, rgba(255, 245, 223, 0) 16%, rgba(255, 223, 158, 0.4) 48%, rgba(255, 245, 223, 0) 76%);
      transform: translateX(-135%);
      animation: introSheen 6.4s ease-in-out 1.1s infinite;
      pointer-events: none;
    }

    .intro-title {
      margin: 18px 0 0;
      max-width: 12ch;
      font-size: clamp(46px, 9vw, 92px);
      line-height: 0.96;
      letter-spacing: -0.045em;
      color: #f7fcf8;
      text-wrap: balance;
      animation: introRise 0.7s ease-out 0.08s both;
    }

    .intro-title span {
      color: #b9d6bf;
    }

    .intro-sub {
      margin: 20px 0 0;
      max-width: 32ch;
      font-size: clamp(15px, 2.3vw, 20px);
      line-height: 1.65;
      color: rgba(236, 244, 238, 0.82);
      animation: introRise 0.72s ease-out 0.16s both;
    }

    .intro-actions {
      margin-top: 30px;
      animation: introRise 0.72s ease-out 0.24s both;
    }

    #intro .intro-actions {
      flex-wrap: nowrap;
      align-items: center;
    }

    .intro-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 54px;
      padding: 14px 28px;
      border-radius: 999px;
      border: 1px solid rgba(229, 241, 232, 0.28);
      background: linear-gradient(180deg, #d4e8d8 0%, #a7c4ad 100%);
      color: #162219;
      box-shadow: 0 16px 36px rgba(11, 20, 14, 0.36);
      font-size: 16px;
      font-weight: 800;
      letter-spacing: 0.02em;
    }

    .intro-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 22px 44px rgba(8, 16, 11, 0.42);
      background: linear-gradient(180deg, #def0e2 0%, #b9d3be 100%);
    }

    #intro .intro-share {
      border-radius: 999px;
      border: 1px solid rgba(237, 245, 239, 0.38);
      background: rgba(243, 250, 245, 0.08);
      color: #eaf4ed;
      backdrop-filter: blur(6px);
      box-shadow: none;
    }

    #intro .intro-share:hover {
      background: rgba(243, 250, 245, 0.18);
      border-color: rgba(237, 245, 239, 0.56);
      transform: translateY(-2px);
    }

    #intro .intro-copy {
      border-radius: 999px;
      border: 1px solid rgba(222, 230, 224, 0.34);
      background: rgba(237, 245, 239, 0.05);
      color: #d9e5dc;
      backdrop-filter: blur(6px);
      box-shadow: none;
    }

    #intro .intro-copy:hover {
      background: rgba(237, 245, 239, 0.14);
      border-color: rgba(230, 237, 232, 0.52);
      transform: translateY(-2px);
    }

    @keyframes introRise {
      from {
        opacity: 0;
        transform: translateY(18px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @keyframes introFloat {
      0%,
      100% { transform: translateY(0) scale(1); }
      50% { transform: translateY(14px) scale(1.03); }
    }

    @keyframes introSheen {
      0%, 74%, 100% { transform: translateX(-135%); }
      82%, 90% { transform: translateX(132%); }
    }

    @keyframes testSurfaceIn {
      from {
        opacity: 0;
        transform: translateY(14px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    button {
      border: 0;
      cursor: pointer;
      transition: transform .16s ease, box-shadow .16s ease, opacity .16s ease;
      font: inherit;
    }

    button:hover { transform: translateY(-1px); }
    button:disabled { cursor: not-allowed; opacity: 0.55; transform: none; }

    .btn-primary {
      background: var(--accent-strong);
      color: #fff;
      padding: 14px 20px;
      border-radius: 14px;
      box-shadow: 0 12px 30px rgba(77, 106, 83, 0.18);
      font-weight: 700;
    }

    .btn-secondary {
      background: #fff;
      color: var(--accent-strong);
      padding: 14px 20px;
      border-radius: 14px;
      border: 1px solid var(--line);
      font-weight: 700;
    }

    .screen { display: none; }
    .screen.active { display: block; }

    .test-wrap,
    .result-wrap {
      margin-top: 22px;
      padding: 22px;
    }

    .topbar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      margin-bottom: 18px;
      flex-wrap: wrap;
    }

    .progress {
      flex: 1;
      min-width: 240px;
      height: 10px;
      background: #edf3ee;
      border-radius: 999px;
      overflow: hidden;
      position: relative;
    }

    .progress > span {
      display: block;
      width: 0;
      height: 100%;
      background: linear-gradient(90deg, #97b59c, #5b7a62);
      border-radius: inherit;
      transition: width .22s ease;
    }

    .progress-text {
      color: var(--muted);
      font-size: 13px;
      white-space: nowrap;
    }

    .question-list {
      display: grid;
      gap: 16px;
    }

    .question {
      border: 1px solid var(--line);
      border-radius: 18px;
      padding: 18px;
      background: linear-gradient(180deg, #ffffff, #fbfdfb);
    }

    .question-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      margin-bottom: 10px;
      color: var(--muted);
      font-size: 12px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border-radius: 999px;
      padding: 6px 10px;
      background: var(--soft);
      border: 1px solid var(--line);
    }

    .question-title {
      font-size: 16px;
      line-height: 1.7;
      white-space: pre-wrap;
    }

    .options {
      display: grid;
      gap: 10px;
      margin-top: 14px;
    }

    .option {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 14px 14px;
      border-radius: 14px;
      border: 1px solid var(--line);
      background: #fff;
      transition: border-color .16s ease, background .16s ease, transform .16s ease;
    }

    .option:hover {
      border-color: #bcd0c1;
      background: #f8fcf9;
    }

    .option input {
      margin-top: 3px;
      accent-color: var(--accent-strong);
      transform: scale(1.1);
      flex-shrink: 0;
    }

    .option-code {
      font-weight: 800;
      color: var(--accent-strong);
      min-width: 22px;
    }

    .actions-bottom {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 18px;
      padding-top: 6px;
    }

    .hint {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.7;
    }

    .result-hero {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 18px;
      align-items: stretch;
    }

    .type-box,
    .score-box,
    .dim-box,
    .top3-box,
    .about-box {
      border: 1px solid var(--line);
      border-radius: 18px;
      padding: 18px;
      background: linear-gradient(180deg, #ffffff, #fbfdfb);
    }

    .type-kicker {
      font-size: 12px;
      color: var(--accent-strong);
      margin-bottom: 8px;
      letter-spacing: .05em;
    }

    .type-name {
      font-size: clamp(30px, 5vw, 48px);
      line-height: 1.08;
      letter-spacing: -0.03em;
    }

    .type-subname {
      margin-top: 8px;
      color: var(--muted);
      font-size: 15px;
    }

    .match {
      margin-top: 18px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border-radius: 999px;
      padding: 10px 14px;
      background: var(--soft);
      border: 1px solid var(--line);
      color: var(--accent-strong);
      font-weight: 700;
    }

    .type-desc {
      margin-top: 18px;
      line-height: 1.85;
      font-size: 15px;
      color: #304034;
    }

    .score-box h3,
    .dim-box h3,
    .top3-box h3,
    .about-box h3 {
      font-size: 16px;
      margin-bottom: 12px;
    }

    .score-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
    }

    .score-item {
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 12px;
      background: #fff;
    }

    .score-item .k {
      font-size: 12px;
      color: var(--muted);
      margin-bottom: 6px;
    }

    .score-item .v {
      font-size: 20px;
      font-weight: 800;
      color: var(--accent-strong);
    }

    .dim-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
    }

    .dim-pill {
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 12px;
      background: #fff;
    }

    .dim-pill .label {
      color: var(--muted);
      font-size: 12px;
      margin-bottom: 6px;
    }

    .dim-pill .value {
      font-size: 20px;
      font-weight: 800;
      color: var(--accent-strong);
    }

    .top3-list {
      display: grid;
      gap: 10px;
    }

    .top3-item {
      border: 1px solid var(--line);
      border-radius: 14px;
      padding: 12px;
      background: #fff;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: center;
    }

    .top3-item strong {
      display: block;
      margin-bottom: 4px;
    }

    .top3-item span {
      color: var(--muted);
      font-size: 13px;
    }

    .top3-score {
      color: var(--accent-strong);
      font-weight: 800;
      white-space: nowrap;
    }

    .about-box p {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
    }

    .footer-note {
      margin-top: 16px;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.7;
    }


    .result-layout {
      display: grid;
      gap: 18px;
    }
    .result-top {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 18px;
      align-items: stretch;
    }
    .poster-box, .type-box, .analysis-box, .dim-box, .note-box {
      border: 1px solid var(--line);
      border-radius: 18px;
      padding: 18px;
      background: linear-gradient(180deg, #ffffff, #fbfdfb);
    }
        .poster-box {
      display: grid;
      grid-template-rows: 1fr auto;
      min-height: 280px;
      overflow: hidden;
      position: relative;
      background:
        radial-gradient(circle at top right, rgba(127,165,134,0.16), rgba(127,165,134,0) 40%),
        linear-gradient(180deg, #ffffff, #f7fbf8);
    }
    .poster-box::after {
      content: "";
      position: absolute;
      right: -46px;
      bottom: -46px;
      width: 140px;
      height: 140px;
      border-radius: 50%;
      background: linear-gradient(180deg, rgba(127,165,134,0.12), rgba(127,165,134,0.01));
      pointer-events: none;
    }
    .poster-image {
      width: 100%;
      min-height: 220px;
      max-height: 460px;
      object-fit: contain;
      border-radius: 18px;
      background: rgba(255,255,255,0.75);
      position: relative;
      z-index: 1;
    }
    .poster-box.no-image .poster-image {
      display: none;
    }
    .poster-caption {
      margin-top: 14px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
      position: relative;
      z-index: 1;
    }
    .type-kicker {
      font-size: 12px;
      color: var(--accent-strong);
      margin-bottom: 8px;
      letter-spacing: .06em;
    }
    .type-name {
      font-size: clamp(30px, 5vw, 48px);
      line-height: 1.08;
      letter-spacing: -0.03em;
    }
    .type-subname {
      margin-top: 10px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
    }
    .match {
      margin-top: 18px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border-radius: 999px;
      padding: 10px 14px;
      background: var(--soft);
      border: 1px solid var(--line);
      color: var(--accent-strong);
      font-weight: 700;
      font-size: 14px;
      line-height: 1.4;
    }
    .analysis-box h3, .dim-box h3, .note-box h3 {
      font-size: 16px;
      margin-bottom: 12px;
    }
    .result-actions {
      margin-top: 22px;
      display: flex;
      justify-content: flex-end;
    }
    .analysis-box p {
      margin: 0;
      color: #304034;
      font-size: 15px;
      line-height: 1.9;
      white-space: pre-wrap;
    }
    .dim-list {
      display: grid;
      gap: 12px;
    }
    .dim-item {
      border: 1px solid var(--line);
      border-radius: 16px;
      padding: 14px;
      background: #fff;
    }
    .dim-item-top {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      gap: 10px;
      margin-bottom: 8px;
      flex-wrap: wrap;
    }
    .dim-item-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--text);
    }
    .dim-item-score {
      color: var(--accent-strong);
      font-weight: 800;
      font-size: 14px;
      white-space: nowrap;
    }
    .dim-item p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.8;
    }
    .note-box p {
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.8;
    }

    .author-box {
      border: 1px solid var(--line);
      border-radius: 18px;
      background: linear-gradient(180deg, #ffffff, #fbfdfb);
      overflow: hidden;
    }
    .author-box summary {
      list-style: none;
      cursor: pointer;
      padding: 18px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }
    .author-box summary::-webkit-details-marker { display: none; }
    .author-box summary::after {
      content: 'Expand';
      font-size: 12px;
      font-weight: 700;
      color: var(--accent-strong);
      border: 1px solid var(--line);
      background: var(--soft);
      padding: 6px 10px;
      border-radius: 999px;
      flex-shrink: 0;
    }
    .author-box[open] summary::after {
      content: 'Collapse';
    }
    .author-content {
      border-top: 1px solid var(--line);
      padding: 0 18px 18px;
    }
    .author-content p {
      margin: 14px 0 0;
      color: #304034;
      font-size: 14px;
      line-height: 1.9;
    }

    .result-actions {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 22px;
    }
    .poster-modal {
      position: fixed;
      inset: 0;
      z-index: 60;
      display: none;
      align-items: center;
      justify-content: center;
      background: rgba(11, 18, 13, 0.72);
      padding: 20px;
      backdrop-filter: blur(6px);
    }

    .poster-modal.active {
      display: flex;
    }

    .poster-modal-card {
      width: min(460px, 100%);
      max-height: calc(100svh - 40px);
      overflow: auto;
      border-radius: 22px;
      border: 1px solid #d5e2d7;
      background: #f8fcf9;
      box-shadow: 0 24px 60px rgba(15, 26, 18, 0.35);
      padding: 14px 14px 16px;
    }

    .poster-modal-head {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 10px;
      margin-bottom: 10px;
    }

    .poster-modal-head h3 {
      margin: 0;
      font-size: 17px;
      color: #243629;
    }

    .poster-modal-head p {
      margin: 6px 0 0;
      color: #5b7062;
      font-size: 13px;
      line-height: 1.65;
    }

    .poster-modal-close {
      border: 1px solid #d7e4d9;
      background: #fff;
      color: #48614f;
      border-radius: 999px;
      width: 34px;
      min-width: 34px;
      height: 34px;
      font-size: 18px;
      line-height: 1;
      padding: 0;
      box-shadow: none;
    }

    .poster-preview {
      width: 100%;
      aspect-ratio: 6 / 9;
      object-fit: contain;
      border-radius: 16px;
      border: 1px solid #d5e2d7;
      background: #fff;
      display: block;
    }

    .poster-modal-tip {
      margin-top: 10px;
      color: #5a6f61;
      font-size: 13px;
      line-height: 1.7;
    }

    .poster-modal-actions {
      margin-top: 12px;
      display: flex;
      justify-content: flex-end;
      gap: 10px;
      flex-wrap: wrap;
    }

    .share-download {
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    #intro .intro-share[aria-busy="true"] {
      opacity: 0.7;
      pointer-events: none;
    }
    @media (max-width: 860px) {
      .result-top {
        grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
        gap: 10px;
      }
      .poster-box,
      .type-box {
        padding: 14px;
      }
      .poster-image {
        min-height: 170px;
      }
      .type-name {
        font-size: clamp(24px, 4.8vw, 34px);
      }
      .intro-inner { width: min(720px, calc(100% - 40px)); }
      .intro-title { max-width: 13ch; }
      .intro-sub { max-width: 34ch; }
    }

@media (max-width: 860px) {
      .hero-grid,
      .result-hero {
        grid-template-columns: 1fr;
      }
      .dim-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }

    @media (max-width: 600px) {
      .shell { padding: 14px 12px 42px; }
      .hero, .test-wrap, .result-wrap { padding: 16px; }
      .hero h1 { font-size: 32px; }
      .question-title { font-size: 15px; }
      .dim-grid,
      .score-grid { grid-template-columns: 1fr; }

      /* Intro mobile optimizations */
      .intro-hero { padding: 48px 0; }
      .intro-inner { text-align: center; width: calc(100% - 32px); }
      .intro-official { margin: 14px auto 0; }
      .intro-title { margin: 18px auto 0; font-size: clamp(34px, 10vw, 42px); }
      .intro-sub { margin: 16px auto 0; font-size: 15px; }

      #intro .intro-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        margin-top: 32px;
      }
      .intro-cta, #intro .intro-share, #intro .intro-copy {
        width: 100%;
        margin: 0;
      }
    }

    /* Telegram group widget */
    .sbti-tg-widget {
      position: fixed;
      right: 20px;
      bottom: calc(18px + env(safe-area-inset-bottom));
      z-index: 54;
      display: none;
    }
    .sbti-tg-widget.visible { display: block; }
    .sbti-tg-widget button { border: 0; cursor: pointer; font: inherit; }
    .sbti-tg-widget__trigger {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 44px;
      padding: 10px 14px;
      border-radius: 999px;
      border: 1px solid rgba(228, 239, 231, 0.36);
      background: rgba(14, 26, 19, 0.78);
      color: #e7f2ea;
      backdrop-filter: blur(8px);
      box-shadow: 0 12px 26px rgba(0, 0, 0, 0.26);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.02em;
      transition: transform .16s ease, background .16s ease;
    }
    .sbti-tg-widget__trigger:hover {
      transform: translateY(-1px);
      background: rgba(19, 35, 26, 0.86);
      border-color: rgba(235, 246, 238, 0.5);
    }
    .sbti-tg-widget__dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #54a9eb;
      box-shadow: 0 0 0 4px rgba(84, 169, 235, 0.22);
      flex: none;
    }
    .sbti-tg-widget__panel {
      position: absolute;
      right: 0;
      bottom: 56px;
      width: min(84vw, 286px);
      padding: 14px;
      border-radius: 16px;
      border: 1px solid rgba(225, 235, 228, 0.34);
      background: rgba(13, 22, 17, 0.94);
      color: #eaf3ed;
      box-shadow: 0 18px 42px rgba(0, 0, 0, 0.34);
      opacity: 0;
      transform: translateY(10px) scale(0.98);
      transform-origin: right bottom;
      pointer-events: none;
      transition: opacity .18s ease, transform .18s ease;
    }
    .sbti-tg-widget.open .sbti-tg-widget__panel {
      opacity: 1;
      transform: translateY(0) scale(1);
      pointer-events: auto;
    }
    .sbti-tg-widget__head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 10px;
    }
    .sbti-tg-widget__title { margin: 0; font-size: 14px; font-weight: 700; }
    .sbti-tg-widget__close {
      width: 28px;
      height: 28px;
      border-radius: 999px;
      border: 1px solid rgba(222, 234, 225, 0.28);
      background: rgba(230, 239, 233, 0.08);
      color: #e7f2ea;
      line-height: 1;
      padding: 0;
      font-size: 16px;
    }
    .sbti-tg-widget__close:hover { background: rgba(230, 239, 233, 0.18); }
    .sbti-tg-widget__desc {
      margin: 10px 0 0;
      color: rgba(228, 239, 232, 0.86);
      font-size: 12px;
      line-height: 1.65;
    }
    .sbti-tg-widget__join {
      display: block;
      margin-top: 12px;
      padding: 10px 14px;
      border-radius: 12px;
      background: #229ed9;
      color: #fff !important;
      font-size: 13px;
      font-weight: 700;
      text-align: center;
      text-decoration: none;
      border: 1px solid rgba(255, 255, 255, 0.2);
      transition: background .16s ease, transform .16s ease;
    }
    .sbti-tg-widget__join:hover {
      background: #1b8bc2;
      transform: translateY(-1px);
    }
    .sbti-tg-widget__tip {
      margin-top: 8px;
      color: rgba(205, 219, 210, 0.86);
      font-size: 12px;
    }
    @media (max-width: 640px) {
      .sbti-tg-widget { right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); }
      .sbti-tg-widget__trigger { min-height: 42px; padding: 9px 12px; font-size: 12px; }
    }

    .lang-bar {
      position: fixed;
      top: calc(12px + env(safe-area-inset-top));
      right: 20px;
      z-index: 60;
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: rgba(255, 255, 255, 0.92);
      box-shadow: var(--shadow);
      font-size: 13px;
    }
    .lang-bar label { color: var(--muted); font-weight: 600; white-space: nowrap; }
    .lang-bar select {
      border: 1px solid var(--line);
      border-radius: 10px;
      padding: 6px 10px;
      font: inherit;
      color: var(--text);
      background: #fff;
      max-width: min(52vw, 200px);
    }
    .lang-quiz-note {
      position: fixed;
      top: calc(52px + env(safe-area-inset-top));
      right: 20px;
      z-index: 59;
      max-width: min(92vw, 320px);
      margin: 0;
      padding: 8px 12px;
      border-radius: 12px;
      border: 1px solid var(--line);
      background: #fff9e6;
      color: #5c4d26;
      font-size: 12px;
      line-height: 1.45;
      box-shadow: 0 4px 14px rgba(0,0,0,.08);
    }
    @media (max-width: 640px) {
      .lang-bar { right: 12px; top: calc(8px + env(safe-area-inset-top)); padding: 6px 10px; font-size: 12px; }
    }