* { box-sizing: border-box; }
    [hidden] { display: none !important; }
    body.materials-page {
      margin: 0;
      color: #111827;
      font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
      background: #f5f7fa;
    }
    #materials-main {
      max-width: 1120px;
      margin: 0 auto;
      padding: 22px 18px 56px;
      line-height: 1.65;
    }
    #materials-main > header {
      padding: 18px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      background: #fff;
    }
    body.auth-pending #daily,
    body.auth-pending #progress,
    body.logged-out #daily,
    body.logged-out #progress,
    body.auth-pending #materials-main header nav,
    body.logged-out #materials-main header nav {
      display: none;
    }
    .header-top {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 24px;
    }
    .product-link {
      display: inline-block;
      margin-bottom: 5px;
      color: #0f4c5c;
      font-size: 13px;
      font-weight: 800;
      text-decoration: none;
    }
    .materials-auth {
      display: grid;
      justify-items: end;
      gap: 7px;
      min-width: 190px;
      color: #64748b;
      font-size: 12px;
    }
    .materials-auth label {
      display: flex;
      align-items: center;
      gap: 7px;
      font-weight: 700;
    }
    .materials-auth select {
      min-width: 130px;
      height: 34px;
      padding: 0 28px 0 9px;
      border: 1px solid #cbd5e1;
      border-radius: 6px;
      background: #fff;
      color: #111827;
      font: inherit;
      font-size: 13px;
    }
    .materials-auth-actions {
      display: flex;
      gap: 10px;
    }
    .materials-auth-actions a {
      color: #0f4c5c;
      font-weight: 800;
      text-decoration: none;
    }
    .materials-login-gate {
      max-width: 560px;
      padding: 24px;
      border: 1px solid #cbd5e1;
      border-radius: 8px;
      background: #fff;
    }
    .materials-login-gate p {
      margin: 0 0 16px;
      color: #52646d;
    }
    .materials-login-gate a {
      display: inline-flex;
      min-height: 42px;
      align-items: center;
      padding: 0 15px;
      border-radius: 6px;
      background: #0f4c5c;
      color: #fff;
      font-weight: 800;
      text-decoration: none;
    }
    #materials-main h1 {
      margin: 0 0 8px;
      font-size: 30px;
      line-height: 1.25;
      letter-spacing: 0;
    }
    .lead {
      margin: 0;
      color: #455a64;
      font-size: 15px;
    }
    .study-format-note {
      display: flex;
      align-items: center;
      min-height: 74px;
      padding: 16px 18px;
      border: 1px solid #cfe0dc;
      border-radius: 10px;
      background: var(--blue-soft);
    }
    .study-format-note div {
      display: grid;
      gap: 3px;
    }
    .study-format-note strong {
      color: var(--ink);
      font-size: 15px;
    }
    .study-format-note span {
      color: var(--muted);
      font-size: 13px;
    }
    .summary {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
      margin-top: 16px;
    }
    .summary-item {
      min-height: 82px;
      padding: 12px;
      border: 1px solid #d7dee4;
      border-radius: 8px;
      background: #f8fafc;
    }
    .summary-item strong {
      display: block;
      margin-bottom: 4px;
      font-size: 14px;
      color: #0f172a;
    }
    .summary-item span {
      display: block;
      color: #52646d;
      font-size: 13px;
      line-height: 1.5;
    }
    #materials-main nav {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin: 16px 0 0;
    }
    #materials-main nav a {
      display: inline-block;
      padding: 8px 11px;
      border: 1px solid var(--line);
      border-radius: 6px;
      color: var(--blue);
      background: #fff;
      font-weight: 700;
      text-decoration: none;
      font-size: 14px;
    }
    #materials-main > section {
      margin: 28px 0 0;
    }
    #materials-main > .study-format-note {
      margin-top: 16px;
    }
    #materials-main h2 {
      margin: 0 0 10px;
      font-size: 21px;
      line-height: 1.35;
    }
    .section-head {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 10px;
    }
    .section-head h2 {
      margin: 0;
    }
    .section-note {
      color: #64748b;
      font-size: 13px;
      white-space: nowrap;
    }
    .progress-head-actions {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .daily-head-actions {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    #daily .section-head {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: start;
      column-gap: 16px;
      row-gap: 4px;
    }
    #daily .section-head h2 {
      grid-column: 1;
      grid-row: 1;
    }
    #daily .daily-head-actions {
      display: contents;
    }
    #daily .section-note {
      grid-column: 1;
      grid-row: 2;
      min-width: 0;
      white-space: normal;
    }
    #daily .past-toggle {
      grid-column: 2;
      grid-row: 1 / span 2;
    }
    .past-toggle {
      height: 34px;
      padding: 0 11px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      color: var(--ink);
      font: inherit;
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
      cursor: pointer;
    }
    .past-toggle:hover {
      border-color: #78aaa3;
      background: var(--blue-soft);
    }
    .past-row-hidden {
      display: none;
    }
    .progress-editor {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .editor-toggle,
    .adjust-button {
      height: 34px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      color: var(--ink);
      font: inherit;
      font-size: 13px;
      font-weight: 800;
      cursor: pointer;
    }
    .editor-toggle {
      padding: 0 11px;
    }
    .adjust-controls {
      display: flex;
      gap: 4px;
    }
    .adjust-controls[hidden] {
      display: none;
    }
    .adjust-button {
      width: 36px;
      padding: 0;
      font-size: 18px;
    }
    .adjust-button[aria-pressed="true"] {
      border-color: var(--blue);
      background: var(--blue);
      color: #fff;
    }
    #materials-main h3 {
      margin: 16px 0 7px;
      font-size: 17px;
    }
    .panel {
      padding: 16px;
      border: 1px solid #c6d0d5;
      border-radius: 8px;
      background: #fff;
    }
    .note {
      border-left: 5px solid #2f6f73;
      background: #eef7f5;
    }
    .warn {
      border-left: 5px solid #b45309;
      background: #fff7ed;
    }
    .parent-only {
      display: none;
    }
    .grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }
    #materials-main table {
      width: 100%;
      border-collapse: collapse;
      background: #fff;
      border: 1px solid var(--line);
      font-size: 14px;
    }
    .table-wrap {
      overflow-x: auto;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
    }
    .table-wrap table {
      border: 0;
      min-width: 660px;
    }
    #daily th:nth-child(3),
    #daily td:nth-child(3) {
      display: none;
    }
    #materials-main th, #materials-main td {
      border-bottom: 1px solid var(--line);
      padding: 10px 11px;
      text-align: left;
      vertical-align: top;
    }
    #materials-main th {
      background: #f0f3f1;
      white-space: nowrap;
    }
    #materials-main td:first-child {
      font-weight: 700;
      white-space: nowrap;
    }
    #materials-main tr:nth-child(even) td {
      background: #fcfdfb;
    }
    .focus-row td {
      background: #fff7ed !important;
    }
    #materials-main ul {
      margin: 8px 0 0;
      padding-left: 1.25em;
    }
    #materials-main li { margin: 3px 0; }
    .tag {
      display: inline-block;
      margin: 0 4px 4px 0;
      padding: 2px 7px;
      border-radius: 999px;
      background: #e0f2fe;
      color: #075985;
      font-size: 12px;
      font-weight: 700;
    }
    .chip {
      display: inline-block;
      min-width: 40px;
      margin: 0 4px 5px 0;
      padding: 3px 7px;
      border-radius: 6px;
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      text-align: center;
    }
    .math { background: #2563eb; }
    .english { background: #dc2626; }
    .japanese { background: #7c3aed; }
    .science { background: #059669; }
    .social { background: #ca8a04; }
    .homeeconomics { background: #0f766e; }
    .art { background: #db2777; }
    .review { background: #475569; }
    .menu-list {
      display: grid;
      gap: 0;
    }
    .menu-item {
      display: grid;
      grid-template-columns: 58px minmax(0, 1fr);
      gap: 8px;
      align-items: start;
      padding: 9px 0;
    }
    .menu-item:first-child {
      padding-top: 0;
    }
    .menu-item:last-child {
      padding-bottom: 0;
    }
    .menu-item + .menu-item {
      border-top: 1px solid #e7ece9;
    }
    .menu-text span {
      display: inline;
      color: #334155;
      font-size: 14px;
      line-height: 1.5;
    }
    .menu-text .task-primary {
      display: block;
      min-width: 0;
    }
    .menu-text .scope-ref {
      display: block;
      margin-top: 2px;
      color: #64748b;
      font-size: 12px;
      line-height: 1.45;
    }
    .menu-text .scope-ref strong {
      margin-right: 7px;
      color: #0f4c5c;
      font-size: 12px;
    }
    .menu-text .scope-ref.is-outside,
    .menu-text .scope-ref.is-outside strong {
      color: #9a3412;
    }
    .page-checks {
      display: flex !important;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 7px;
    }
    .page-button {
      min-width: 48px;
      height: 34px;
      padding: 0 8px;
      border: 1px solid var(--line);
      border-radius: 6px;
      background: #fff;
      color: var(--ink);
      font: inherit;
      font-size: 12px;
      font-weight: 800;
      cursor: pointer;
    }
    .page-button:hover {
      border-color: #78aaa3;
      background: var(--blue-soft);
    }
    .page-button.is-complete {
      border-color: var(--blue);
      background: var(--blue);
      color: #fff;
    }
    .page-button.is-complete::after {
      content: " ✓";
    }
    .task-button {
      min-width: 62px;
    }
    .task-button.is-complete::after {
      content: " ✓";
    }
    .page-button:focus-visible {
      outline: 3px solid #8fc9c1;
      outline-offset: 2px;
    }
    .book {
      font-weight: 700;
      color: #0f172a;
    }
    .menu-text .task-links {
      display: inline-flex;
      flex-wrap: wrap;
      gap: 5px;
      margin-left: 3px;
    }
    .task-links a {
      display: inline-flex;
      min-height: 28px;
      align-items: center;
      padding: 1px 8px;
      border: 1px solid #94a3b8;
      border-radius: 4px;
      background: #fff;
      color: #0f4c5c;
      font-size: 12px;
      font-weight: 800;
      text-decoration: none;
    }
    .task-links a:hover {
      border-color: #2f6f73;
      background: #eef7f5;
    }
    .small {
      color: #52646d;
      font-size: 13px;
    }
    .done {
      margin-left: 6px;
      color: #166534;
      font-size: 13px;
      font-weight: 700;
    }
    .menu-text .done {
      display: block;
      margin: 7px 0 0;
      padding: 6px 8px;
      border-left: 3px solid #86b9ae;
      border-radius: 0 5px 5px 0;
      background: #f0f8f5;
      color: #285f55;
      font-size: 12px;
      font-weight: 700;
      line-height: 1.55;
    }
    .progress-list {
      display: grid;
      gap: 18px;
    }
    .progress-period-heading {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      gap: 12px;
      margin: 4px 0 12px;
      padding-bottom: 8px;
      border-bottom: 2px solid var(--blue);
    }
    .progress-period-heading h3 {
      margin: 0;
      font-size: 18px;
    }
    .progress-period-heading span {
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
      white-space: nowrap;
    }
    .total-progress {
      margin-top: 20px;
      border-top: 1px solid var(--line);
    }
    .total-progress > summary {
      padding: 14px 2px;
      color: #334155;
      cursor: pointer;
      font-size: 16px;
      font-weight: 800;
    }
    .total-progress-list {
      padding-top: 4px;
    }
    .subject-section {
      display: grid;
      gap: 0;
      overflow: hidden;
      border: 1px solid var(--subject-mid, var(--line));
      border-radius: 12px;
      background: #fff;
    }
    .subject-section-title {
      display: flex;
      align-items: center;
      margin: 0;
      padding: 10px 14px;
      border-bottom: 1px solid var(--subject-mid, var(--line));
      background: var(--subject-soft, #f4f7f5);
      font-size: 18px;
      font-weight: 800;
    }
    .print-summary {
      margin-left: 10px;
      color: #475569;
      font-size: 12px;
      font-weight: 700;
    }
    .subject-section-title .chip {
      min-width: 56px;
      margin: 0;
      font-size: 14px;
    }
    .subject-books {
      display: grid;
      gap: 12px;
      margin: 0;
      padding: 12px;
      border: 0;
    }
    .subject-group {
      border: 1px solid var(--line);
      border-radius: 8px;
      background: #fff;
      overflow: hidden;
    }
    .subject-title {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 10px 16px;
      border-bottom: 1px solid var(--line);
      background: #f8faf9;
      font-weight: 800;
    }
    .progress-row.priority-row {
      box-shadow: inset 3px 0 var(--subject-color, var(--blue));
      padding-left: 20px;
    }
    .secondary-progress {
      border-top: 1px solid var(--line);
      background: #fcfdfb;
    }
    .secondary-progress summary {
      padding: 10px 16px;
      color: var(--subject-dark, #52646d);
      cursor: pointer;
      font-size: 13px;
      font-weight: 700;
    }
    .secondary-progress .subject-rows {
      border-top: 1px solid var(--line);
    }
    .subject-rows {
      padding: 6px 18px 8px 24px;
    }
    .progress-row {
      display: grid;
      grid-template-columns: minmax(210px, 300px) minmax(0, 1fr) 120px;
      gap: 10px;
      align-items: center;
      padding: 8px 0;
      border-bottom: 1px solid var(--line);
    }
    .progress-row:last-child {
      border-bottom: 0;
    }
    .unit-label {
      color: #0f172a;
      font-weight: 700;
      line-height: 1.4;
    }
    .heat-cells {
      display: flex;
      flex-wrap: wrap;
      gap: 5px;
      align-items: center;
    }
    .heat-box {
      width: 32px;
      height: 28px;
      border: 1px solid var(--line);
      border-radius: 4px;
      background: #f7f9f7;
      color: var(--ink);
      font-size: 11px;
      font-weight: 800;
      line-height: 26px;
      text-align: center;
    }
    .heat-box.is-editable {
      cursor: pointer;
      outline: 2px solid #a9d4ce;
      outline-offset: 1px;
    }
    .heat-box.is-editable:hover {
      outline-color: var(--blue);
    }
    .heat-box.is-editable:focus-visible {
      outline: 3px solid var(--blue);
      outline-offset: 2px;
    }
    .heat-0 { background: #f7f9f7; color: #9aa59f; }
    .heat-1 { background: #d8eee9; border-color: #b8d8d2; color: var(--ink); }
    .heat-2 { background: #8fc9c1; border-color: #78aaa3; color: #102f2f; }
    .heat-3 { background: var(--blue); border-color: #0d5c64; color: #fff; }
    .progress-note {
      color: #64748b;
      font-size: 13px;
      line-height: 1.35;
    }
    .pending {
      color: #0f172a;
      font-weight: 700;
    }
    @media (max-width: 720px) {
      #materials-main { padding: 20px 12px 40px; }
      #materials-main h1 { font-size: 25px; }
      .header-top { display: grid; gap: 14px; }
      .materials-auth { justify-items: start; min-width: 0; }
      .summary { grid-template-columns: 1fr; }
      .section-head { display: block; }
      .section-note { white-space: normal; }
      .daily-head-actions { margin-top: 8px; align-items: flex-start; }
      .progress-head-actions { margin-top: 8px; justify-content: space-between; }
      .progress-period-heading { align-items: flex-start; }
      .subject-books { margin: 0; padding: 8px; border: 0; }
      .subject-rows { padding: 6px 12px 8px 16px; }
      .grid { grid-template-columns: 1fr; }
      .progress-row { grid-template-columns: 1fr; gap: 7px; }
      #materials-main table { font-size: 13px; }
      #materials-main th, #materials-main td { padding: 8px 7px; }
    }
    body.materials-page {
      color: var(--ink);
      background: linear-gradient(180deg, #fbfcfa 0, var(--paper) 240px);
    }
    .materials-app .menu-link {
      min-height: 44px;
      padding: 0 12px;
      border: 0;
      font-size: 16px;
      line-height: 1.2;
    }
    #materials-main {
      width: min(100%, 1120px);
      max-width: none;
      margin: 0 auto;
      padding: 28px;
      display: block;
    }
    .materials-app .brand-block p {
      margin: 0;
    }
    .materials-app .side-meta label {
      display: grid;
      margin: 0;
    }
    .materials-app .auth-actions a {
      width: 100%;
    }
    #materials-main > header {
      padding: 22px;
      border-color: var(--line);
      box-shadow: var(--shadow);
    }
    #materials-main .materials-login-gate {
      margin: min(18vh, 140px) auto 0;
      padding: 22px;
      border-color: #b8d8d2;
    }
    #materials-main .materials-login-gate p {
      color: var(--muted);
    }
    @media (max-width: 880px) {
      #materials-main { padding: 14px; }
      .materials-app aside {
        grid-template-columns: minmax(0, 1fr) auto;
      }
      .materials-app .brand-block { margin: 0; }
      .materials-app .side-menu { grid-column: 1 / -1; }
      .materials-app .auth-actions {
        grid-column: 2;
        grid-row: 1;
      }
      #materials-main > header { padding: 18px; }
    }

    /* LOGICLAB shared visual system */
    body.materials-page {
      color: var(--ink);
      background: linear-gradient(180deg, #fbfcfa 0, var(--paper) 320px);
      font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
    }
    #materials-main {
      width: min(100%, var(--content-width));
      max-width: none;
      padding: 32px;
      display: grid;
      gap: 18px;
      align-content: start;
    }
    #materials-main > header,
    #materials-main > section {
      margin: 0;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel);
      box-shadow: var(--shadow);
    }
    body.auth-pending #materials-main > header,
    body.logged-out #materials-main > header {
      display: none;
    }
    #materials-main > header h1 {
      margin: 4px 0 0;
      font-size: 26px;
      line-height: 1.3;
      letter-spacing: -.015em;
    }
    #materials-main > header .lead {
      margin-top: 4px;
      color: var(--muted);
      font-size: 14px;
    }
    #materials-main > header nav {
      gap: 8px;
      margin-top: 18px;
    }
    #materials-main > header nav a {
      border-radius: 10px;
      color: var(--blue);
      background: var(--blue-soft);
    }
    #materials-main .section-head {
      margin-bottom: 16px;
    }
    #materials-main .section-head h2 {
      font-size: 20px;
    }
    #materials-main .section-note,
    #materials-main .progress-note,
    #materials-main .small {
      color: var(--muted);
    }
    #materials-main .table-wrap,
    #materials-main .subject-group {
      border-color: var(--line);
      border-radius: 10px;
      box-shadow: none;
    }
    #materials-main th,
    #materials-main .subject-title {
      background: #f4f7f5;
    }
    #materials-main th,
    #materials-main td {
      border-color: var(--line);
      padding: 11px 12px;
    }
    #materials-main .past-toggle,
    #materials-main .editor-toggle,
    #materials-main .adjust-button,
    #materials-main .page-button {
      border-radius: 10px;
    }
    #materials-main .subject-section-title {
      color: var(--ink);
    }
    #materials-main .subject-books {
      border: 0;
    }
    #materials-main .chip {
      border-radius: 7px;
    }
    #materials-main .math { background: var(--subject-math); }
    #materials-main .english { background: var(--subject-english); }
    #materials-main .japanese { background: var(--subject-japanese); }
    #materials-main .science { background: var(--subject-science); }
    #materials-main .social { background: var(--subject-social); }
    #materials-main .review { background: #64736c; }
    #materials-main .heat-box {
      border-radius: 6px;
    }
    #materials-main .heat-1 { background: #dff0eb; border-color: #bfded6; }
    #materials-main .heat-2 { background: #91c9c1; border-color: #78aaa3; }
    #materials-main .heat-3 { background: var(--blue); border-color: #0d5c64; }
    #materials-main .subject-section[data-subject="math"] { --subject-color: var(--subject-math); --subject-soft: var(--subject-math-soft); --subject-mid: var(--subject-math-mid); --subject-dark: var(--subject-math-dark); }
    #materials-main .subject-section[data-subject="english"] { --subject-color: var(--subject-english); --subject-soft: var(--subject-english-soft); --subject-mid: var(--subject-english-mid); --subject-dark: var(--subject-english-dark); }
    #materials-main .subject-section[data-subject="japanese"] { --subject-color: var(--subject-japanese); --subject-soft: var(--subject-japanese-soft); --subject-mid: var(--subject-japanese-mid); --subject-dark: var(--subject-japanese-dark); }
    #materials-main .subject-section[data-subject="science"] { --subject-color: var(--subject-science); --subject-soft: var(--subject-science-soft); --subject-mid: var(--subject-science-mid); --subject-dark: var(--subject-science-dark); }
    #materials-main .subject-section[data-subject="social"] { --subject-color: var(--subject-social); --subject-soft: var(--subject-social-soft); --subject-mid: var(--subject-social-mid); --subject-dark: var(--subject-social-dark); }
    #materials-main .subject-section-title { border-color: var(--subject-mid); }
    #materials-main .subject-section .subject-books { border-color: var(--subject-mid); }
    #materials-main .subject-section .heat-1 { background: var(--subject-soft); border-color: var(--subject-mid); }
    #materials-main .subject-section .heat-2 { background: var(--subject-mid); border-color: var(--subject-color); }
    #materials-main .subject-section .heat-3 { background: var(--subject-color); border-color: var(--subject-dark); }
    #materials-main .focus-row td {
      background: var(--accent-soft) !important;
    }
    #materials-main .materials-login-gate {
      max-width: 620px;
    }
    #materials-main .materials-login-gate .login-main-button {
      background: #06c755;
      border-color: #06c755;
    }
    @media (max-width: 880px) {
      #materials-main {
        padding: 14px;
        gap: 14px;
      }
      #materials-main > header,
      #materials-main > section {
        padding: 18px;
      }
      #materials-main > header h1 {
        font-size: 22px;
      }
    }
    @media (max-width: 680px) {
      .materials-app,
      #materials-main,
      #materials-main > section,
      #materials-main .table-wrap {
        min-width: 0;
        max-width: 100%;
      }
      #materials-main > header,
      #materials-main > section {
        padding: 14px;
      }
      #materials-main .table-wrap table {
        width: 100%;
        min-width: 0;
        table-layout: fixed;
      }
      #daily th:first-child,
      #daily td:first-child {
        width: 62px;
      }
      #materials-main th,
      #materials-main td {
        padding: 9px 7px;
      }
      .menu-item {
        grid-template-columns: 48px minmax(0, 1fr);
        gap: 6px;
      }
      .menu-text {
        min-width: 0;
        overflow-wrap: anywhere;
      }
      .chip {
        min-width: 0;
        width: 44px;
        margin-right: 0;
        padding: 3px 4px;
      }
      .daily-head-actions {
        flex-wrap: wrap;
      }
      #daily .section-head {
        grid-template-columns: minmax(0, 1fr);
      }
      #daily .section-head h2,
      #daily .section-note,
      #daily .past-toggle {
        grid-column: 1;
        grid-row: auto;
      }
      #daily .past-toggle {
        justify-self: start;
        margin-top: 4px;
      }
    }