:root {
      color-scheme: light;
      --bg: #f7f4eb;
      --surface: #fffaf0;
      --surface-strong: #ffffff;
      --ink: #1d2520;
      --muted: #617065;
      --line: #ded6c3;
      --primary: #12664f;
      --primary-strong: #0d4f3d;
      --accent: #b7791f;
      --accent-soft: #f0dfb8;
      --blue: #315f86;
      --shadow: 0 18px 45px rgba(44, 37, 21, 0.11);
      --radius: 8px;
      --max: 1180px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      background:
        radial-gradient(circle at top left, rgba(18, 102, 79, 0.12), transparent 30rem),
        linear-gradient(180deg, #fbf8ef 0%, var(--bg) 42%, #eef3ef 100%);
      color: var(--ink);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.65;
    }

    img {
      display: block;
      max-width: 100%;
    }

    a {
      color: inherit;
    }

    .skip-link {
      position: absolute;
      left: 16px;
      top: -80px;
      z-index: 20;
      background: var(--ink);
      color: #fff;
      padding: 10px 14px;
      border-radius: var(--radius);
      transition: top 0.2s ease;
    }

    .skip-link:focus {
      top: 16px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 10;
      border-bottom: 1px solid rgba(222, 214, 195, 0.78);
      background: rgba(247, 244, 235, 0.92);
      backdrop-filter: blur(16px);
    }

    .nav {
      width: min(var(--max), calc(100% - 32px));
      min-height: 72px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      text-decoration: none;
      display: grid;
      gap: 2px;
      min-width: 190px;
    }

    .brand span:first-child {
      color: var(--primary);
      font-size: 12px;
      font-weight: 800;
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }

    .brand span:last-child {
      font-size: 18px;
      font-weight: 850;
      line-height: 1.1;
    }

    .nav-links {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: flex-end;
      gap: 8px;
    }

    .nav-links a {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      border-radius: var(--radius);
      padding: 10px 12px;
      color: #33453a;
      font-size: 14px;
      font-weight: 750;
      text-decoration: none;
    }

    .nav-links a:hover,
    .nav-links a:focus-visible {
      background: rgba(18, 102, 79, 0.1);
      color: var(--primary-strong);
      outline: none;
    }

    .page {
      overflow: hidden;
    }

    .section {
      width: min(var(--max), calc(100% - 32px));
      margin: 0 auto;
      padding: 72px 0;
    }

    .hero {
      width: min(1280px, calc(100% - 32px));
      min-height: calc(100dvh - 72px);
      margin: 0 auto;
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
      align-items: center;
      gap: 48px;
      padding: 48px 0 36px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
      font-size: 13px;
      font-weight: 850;
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }

    .eyebrow::before {
      content: "";
      width: 28px;
      height: 2px;
      background: var(--accent);
    }

    h1,
    h2,
    h3 {
      margin: 0;
      line-height: 1.1;
      letter-spacing: 0;
    }

    h1 {
      max-width: 780px;
      margin-top: 18px;
      font-size: clamp(2.7rem, 7vw, 5.85rem);
      text-wrap: balance;
    }

    #hero-title {
      margin-top: 10px;
      font-size: 48px;
      line-height: 1.12;
    }

    h2 {
      font-size: clamp(2rem, 4vw, 3rem);
      text-wrap: balance;
    }

    h3 {
      font-size: 1.22rem;
    }

    .lede {
      max-width: 720px;
      margin: 18px 0 0;
      color: #4a5b50;
      font-size: clamp(1.05rem, 2vw, 1.24rem);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      margin-top: 24px;
    }

    .button {
      min-height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid transparent;
      border-radius: var(--radius);
      padding: 12px 18px;
      font-weight: 850;
      text-decoration: none;
      transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
    }

    .button:hover,
    .button:focus-visible {
      transform: translateY(-1px);
      outline: none;
    }

    .button.primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 12px 28px rgba(18, 102, 79, 0.24);
    }

    .button.primary:hover,
    .button.primary:focus-visible {
      background: var(--primary-strong);
    }

    .button.secondary {
      border-color: rgba(18, 102, 79, 0.24);
      background: rgba(255, 255, 255, 0.58);
      color: var(--primary-strong);
    }

    .hero-proof {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      max-width: 680px;
      margin-top: 36px;
    }

    .proof-item {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 250, 240, 0.8);
      padding: 14px;
    }

    .proof-item strong {
      display: block;
      color: var(--ink);
      font-size: 1.35rem;
      line-height: 1.1;
    }

    .proof-item span {
      display: block;
      margin-top: 5px;
      color: var(--muted);
      font-size: 0.92rem;
      line-height: 1.4;
    }

    .visual-board {
      position: relative;
      min-height: 570px;
    }

    .visual-card {
      position: absolute;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.72);
      border-radius: var(--radius);
      background: var(--surface-strong);
      box-shadow: var(--shadow);
    }

    .visual-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .visual-card.main {
      inset: 32px 18px 82px 78px;
    }

    .visual-card.side {
      width: 42%;
      height: 38%;
      right: 0;
      top: 0;
    }

    .visual-card.lower {
      width: 48%;
      height: 36%;
      left: 0;
      bottom: 0;
    }

    .note-panel {
      position: absolute;
      right: 28px;
      bottom: 28px;
      width: min(360px, 72%);
      border: 1px solid rgba(222, 214, 195, 0.86);
      border-radius: var(--radius);
      background: rgba(255, 250, 240, 0.92);
      padding: 18px;
      box-shadow: 0 14px 35px rgba(44, 37, 21, 0.12);
    }

    .note-panel strong {
      display: block;
      font-size: 0.95rem;
    }

    .note-panel span {
      display: block;
      margin-top: 6px;
      color: var(--muted);
      font-size: 0.92rem;
      line-height: 1.45;
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(250px, 0.45fr);
      align-items: end;
      gap: 32px;
      margin-bottom: 28px;
    }

    .section-head p {
      margin: 14px 0 0;
      color: var(--muted);
    }

    .section-kicker {
      margin: 0 0 10px;
      color: var(--accent);
      font-size: 13px;
      font-weight: 850;
      letter-spacing: 0.12em;
      text-transform: uppercase;
    }

    .guide-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .guide-card {
      position: relative;
      overflow: hidden;
      min-height: 100%;
      display: flex;
      flex-direction: column;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface-strong);
      box-shadow: 0 10px 24px rgba(44, 37, 21, 0.06);
    }

    .guide-card.featured {
      grid-column: span 2;
    }

    .guide-card__image {
      aspect-ratio: 16 / 9;
      background: #ede4cf;
    }

    .guide-card__image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .guide-card__body {
      flex: 1;
      display: flex;
      flex-direction: column;
      padding: 22px;
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 14px;
    }

    .tag {
      border: 1px solid rgba(18, 102, 79, 0.18);
      border-radius: var(--radius);
      background: rgba(18, 102, 79, 0.08);
      color: var(--primary-strong);
      padding: 4px 8px;
      font-size: 12px;
      font-weight: 800;
    }

    .guide-card p {
      margin: 12px 0 0;
      color: var(--muted);
    }

    .guide-link {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      width: fit-content;
      margin-top: auto;
      padding-top: 18px;
      color: var(--primary);
      font-weight: 850;
      text-decoration: none;
    }

    .guide-link:hover,
    .guide-link:focus-visible {
      color: var(--primary-strong);
      text-decoration: underline;
      text-underline-offset: 4px;
      outline: none;
    }

    .topic-band {
      border-block: 1px solid var(--line);
      background: rgba(255, 250, 240, 0.58);
    }

    .root-page-grid {
      display: grid;
      grid-template-columns: repeat(5, minmax(0, 1fr));
      gap: 14px;
    }

    .root-page-card {
      min-height: 220px;
      display: flex;
      flex-direction: column;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface-strong);
      padding: 20px;
      text-decoration: none;
      box-shadow: 0 10px 24px rgba(44, 37, 21, 0.05);
      transition: transform 0.18s ease, border-color 0.18s ease;
    }

    .root-page-card:hover,
    .root-page-card:focus-visible {
      transform: translateY(-2px);
      border-color: rgba(18, 102, 79, 0.38);
      outline: none;
    }

    .root-page-card span {
      color: var(--accent);
      font-size: 12px;
      font-weight: 850;
      text-transform: uppercase;
    }

    .root-page-card strong {
      margin-top: 10px;
      color: var(--ink);
      font-size: 1.12rem;
      line-height: 1.25;
    }

    .root-page-card p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 0.95rem;
    }

    .root-page-card em {
      margin-top: auto;
      padding-top: 18px;
      color: var(--primary);
      font-style: normal;
      font-weight: 850;
    }

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

    .topic-card {
      min-height: 180px;
      display: flex;
      flex-direction: column;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.68);
      padding: 20px;
      text-decoration: none;
      transition: border-color 0.18s ease, transform 0.18s ease, background 0.18s ease;
    }

    .topic-card:hover,
    .topic-card:focus-visible {
      transform: translateY(-2px);
      border-color: rgba(18, 102, 79, 0.38);
      background: #fff;
      outline: none;
    }

    .topic-card span {
      color: var(--accent);
      font-size: 12px;
      font-weight: 850;
      text-transform: uppercase;
    }

    .topic-card strong {
      margin-top: 8px;
      color: var(--ink);
      font-size: 1.12rem;
      line-height: 1.25;
    }

    .topic-card p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 0.95rem;
    }

    .learning-layout {
      display: grid;
      grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1fr);
      gap: 26px;
      align-items: start;
    }

    .method-card {
      position: sticky;
      top: 104px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--primary);
      color: #fff;
      padding: 28px;
      box-shadow: var(--shadow);
    }

    .method-card h2 {
      font-size: 2rem;
    }

    .method-card p {
      color: rgba(255, 255, 255, 0.82);
    }

    .method-list {
      display: grid;
      gap: 12px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .method-list li {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface-strong);
      padding: 20px;
    }

    .method-list strong {
      display: block;
      font-size: 1.08rem;
    }

    .method-list p {
      margin: 8px 0 0;
      color: var(--muted);
    }

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

    details {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface-strong);
      padding: 18px 20px;
    }

    summary {
      cursor: pointer;
      font-weight: 850;
    }

    summary:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 4px;
    }

    details p {
      margin: 12px 0 0;
      color: var(--muted);
    }

    .site-footer {
      border-top: 1px solid var(--line);
      background: #18231e;
      color: #eaf2ec;
    }

    .article-page {
      width: min(980px, calc(100% - 32px));
      margin: 0 auto;
      padding: 56px 0 72px;
    }

    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 28px;
      color: var(--muted);
      font-size: 0.94rem;
    }

    .breadcrumb a {
      color: var(--primary);
      font-weight: 800;
      text-decoration: none;
    }

    .breadcrumb a:hover,
    .breadcrumb a:focus-visible {
      text-decoration: underline;
      text-underline-offset: 4px;
      outline: none;
    }

    .article-hero {
      border-bottom: 1px solid var(--line);
      padding-bottom: 32px;
      margin-bottom: 34px;
    }

    .article-hero h1 {
      max-width: 900px;
      margin-top: 12px;
      font-size: clamp(2.25rem, 6vw, 3.75rem);
    }

    .article-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 22px;
    }

    .article-meta span {
      border: 1px solid rgba(18, 102, 79, 0.18);
      border-radius: var(--radius);
      background: rgba(18, 102, 79, 0.08);
      color: var(--primary-strong);
      padding: 5px 9px;
      font-size: 12px;
      font-weight: 850;
    }

    .prose {
      display: grid;
      gap: 24px;
      color: #34443a;
      font-size: 1.05rem;
    }

    .prose h2 {
      margin-top: 8px;
      font-size: clamp(1.6rem, 4vw, 2.2rem);
    }

    .prose h3 {
      margin-top: 4px;
      color: var(--ink);
    }

    .prose p,
    .prose ul,
    .prose ol {
      margin: 0;
    }

    .prose li + li {
      margin-top: 8px;
    }

    .note-callout {
      border-left: 4px solid var(--primary);
      border-radius: var(--radius);
      background: rgba(255, 250, 240, 0.9);
      padding: 20px;
      box-shadow: 0 10px 24px rgba(44, 37, 21, 0.06);
    }

    .review-card-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .review-card {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface-strong);
      padding: 20px;
    }

    .review-card p {
      margin-top: 8px;
      color: var(--muted);
    }

    .next-links {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
      margin-top: 10px;
    }

    .next-links a {
      min-height: 64px;
      display: flex;
      align-items: center;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface-strong);
      padding: 16px;
      color: var(--primary);
      font-weight: 850;
      text-decoration: none;
    }

    .next-links a:hover,
    .next-links a:focus-visible {
      border-color: rgba(18, 102, 79, 0.38);
      text-decoration: underline;
      text-underline-offset: 4px;
      outline: none;
    }

    .footer-inner {
      width: min(var(--max), calc(100% - 32px));
      margin: 0 auto;
      padding: 34px 0;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 18px;
    }

    .footer-inner p {
      max-width: 680px;
      margin: 0;
      color: rgba(234, 242, 236, 0.78);
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .footer-links a {
      min-height: 44px;
      display: inline-flex;
      align-items: center;
      color: #fff;
      font-weight: 750;
      text-decoration: none;
    }

    .footer-links a:hover,
    .footer-links a:focus-visible {
      text-decoration: underline;
      text-underline-offset: 4px;
      outline: none;
    }

    @media (max-width: 980px) {
      .nav {
        min-height: auto;
        padding: 16px 0;
        align-items: flex-start;
        flex-direction: column;
      }

      .nav-links {
        justify-content: flex-start;
      }

      .hero,
      .section-head,
      .learning-layout {
        grid-template-columns: 1fr;
      }

      .hero {
        min-height: auto;
        gap: 28px;
        padding-top: 42px;
      }

      .visual-board {
        min-height: 450px;
      }

      .guide-grid,
      .root-page-grid,
      .topic-grid,
      .faq-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .guide-card.featured {
        grid-column: span 1;
      }

      .method-card {
        position: static;
      }
    }

    @media (max-width: 640px) {
      .section {
        padding: 54px 0;
      }

      .nav-links {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .nav-links a {
        padding-inline: 10px;
      }

      .hero-proof,
      .guide-grid,
      .root-page-grid,
      .topic-grid,
      .faq-grid,
      .review-card-grid,
      .next-links {
        grid-template-columns: 1fr;
      }

      .hero-actions {
        align-items: stretch;
        flex-direction: column;
      }

      .button {
        width: 100%;
      }

      .visual-board {
        min-height: 390px;
      }

      .visual-card.main {
        inset: 52px 0 74px 42px;
      }

      .visual-card.side {
        width: 54%;
        height: 34%;
      }

      .visual-card.lower {
        width: 58%;
        height: 34%;
      }

      .note-panel {
        right: 12px;
        bottom: 12px;
        width: min(330px, 82%);
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        scroll-behavior: auto !important;
        transition: none !important;
      }
    }