:root {
      --navy-950: #06152b;
      --navy-900: #071a35;
      --navy-800: #0d2b50;
      --navy-700: #174776;
      --blue: #2c71b8;
      --ice: #f3f7fb;
      --white: #ffffff;
      --ink: #17263a;
      --muted: #607087;
      --line: #d9e2ed;
      --gold: #c8a86b;
      --gold-soft: #f5ecd9;
      --shadow: 0 22px 60px rgba(6, 21, 43, 0.12);
      --radius-lg: 26px;
      --radius-md: 16px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--ice);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      line-height: 1.7;
      text-rendering: optimizeLegibility;
    }

    a {
      color: var(--navy-700);
      text-decoration-thickness: 1px;
      text-underline-offset: 3px;
    }

    a:hover {
      color: var(--blue);
    }

    .page-shell {
      overflow: hidden;
    }

    .hero {
      position: relative;
      isolation: isolate;
      background:
        radial-gradient(circle at 85% 18%, rgba(74, 141, 201, 0.22), transparent 28rem),
        linear-gradient(135deg, var(--navy-950), var(--navy-800));
      color: var(--white);
      padding: clamp(42px, 7vw, 92px) 22px clamp(50px, 7vw, 86px);
    }

    .hero::after {
      content: "";
      position: absolute;
      z-index: -1;
      right: -12rem;
      bottom: -13rem;
      width: 38rem;
      height: 38rem;
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 50%;
      box-shadow:
        0 0 0 3rem rgba(255, 255, 255, 0.025),
        0 0 0 6rem rgba(255, 255, 255, 0.02);
    }

    .hero-inner,
    .article-layout,
    .closing {
      width: min(1180px, 100%);
      margin: 0 auto;
    }

    .hero-inner {
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(340px, 0.98fr);
      gap: clamp(30px, 6vw, 84px);
      align-items: center;
    }

    .eyebrow,
    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin: 0 0 20px;
      color: var(--gold);
      font-size: 0.78rem;
      font-weight: 800;
      letter-spacing: 0.16em;
      text-transform: uppercase;
    }

    .eyebrow::before,
    .section-label::before {
      content: "";
      width: 34px;
      height: 2px;
      background: var(--gold);
    }

    h1,
    h2,
    h3 {
      font-family: Georgia, "Times New Roman", serif;
      letter-spacing: -0.025em;
      line-height: 1.12;
    }

    h1 {
      max-width: 740px;
      margin: 0;
      font-size: clamp(2.4rem, 5.4vw, 5rem);
      font-weight: 700;
    }

    .hero-lead {
      max-width: 680px;
      margin: 28px 0 0;
      color: #dceaf8;
      font-size: clamp(1.03rem, 1.7vw, 1.28rem);
    }

    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 20px;
      margin-top: 26px;
      color: #b9cbe0;
      font-size: 0.9rem;
    }

    .hero-meta span {
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

    .hero-meta span::before {
      content: "•";
      color: var(--gold);
      font-size: 1.2rem;
      line-height: 0;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 34px;
    }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 11px 20px;
      border: 1px solid transparent;
      border-radius: 999px;
      font-size: 0.92rem;
      font-weight: 800;
      text-decoration: none;
      transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
    }

    .button:hover {
      color: inherit;
      transform: translateY(-2px);
    }

    .button-primary {
      background: var(--gold);
      color: var(--navy-950);
    }

    .button-primary:hover {
      background: #dfc48f;
    }

    .button-ghost {
      border-color: rgba(255, 255, 255, 0.35);
      color: var(--white);
    }

    .button-ghost:hover {
      border-color: rgba(255, 255, 255, 0.75);
      background: rgba(255, 255, 255, 0.08);
    }

    .hero-visual {
      position: relative;
      margin: 0;
    }

    .hero-image-frame {
      position: relative;
      min-height: 420px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.24);
      border-radius: var(--radius-lg);
      background: linear-gradient(145deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.03));
      box-shadow: 0 30px 80px rgba(0, 0, 0, 0.24);
    }

    .hero-image-frame::before {
      content: "";
      position: absolute;
      inset: 16px;
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: calc(var(--radius-lg) - 9px);
      pointer-events: none;
    }

    .hero-image-frame img {
      display: block;
      width: 100%;
      height: 100%;
      min-height: 420px;
      object-fit: cover;
      opacity: 0.9;
    }

    .image-note {
      position: absolute;
      right: 20px;
      bottom: 20px;
      max-width: 245px;
      padding: 13px 15px;
      border: 1px solid rgba(255, 255, 255, 0.22);
      border-radius: 13px;
      background: rgba(7, 26, 53, 0.76);
      color: #eff7ff;
      font-size: 0.78rem;
      line-height: 1.45;
      backdrop-filter: blur(8px);
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 14px;
    }

    .hero-stat {
      padding: 14px 11px;
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.07);
      text-align: center;
    }

    .hero-stat strong {
      display: block;
      color: var(--white);
      font-size: 1.1rem;
    }

    .hero-stat span {
      color: #b9cbe0;
      font-size: 0.72rem;
    }

    .article-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 292px;
      gap: 28px;
      align-items: start;
      padding: 38px 22px 70px;
    }

    .article-card {
      min-width: 0;
      padding: clamp(24px, 4vw, 52px);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--white);
      box-shadow: var(--shadow);
    }

    .article-card > section + section {
      margin-top: 58px;
      padding-top: 52px;
      border-top: 1px solid var(--line);
    }

    .article-card h2 {
      margin: 0 0 18px;
      color: var(--navy-900);
      font-size: clamp(1.7rem, 3vw, 2.55rem);
    }

    .article-card h3 {
      margin: 28px 0 10px;
      color: var(--navy-800);
      font-family: inherit;
      font-size: 1.12rem;
      letter-spacing: 0;
    }

    .article-card p {
      margin: 0 0 16px;
      color: #405268;
    }

    .article-card ul,
    .article-card ol {
      margin: 0 0 18px;
      padding-left: 1.25rem;
      color: #405268;
    }

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

    .highlight {
      margin: 26px 0;
      padding: 20px 22px;
      border-left: 4px solid var(--gold);
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      background: var(--gold-soft);
      color: var(--navy-900);
    }

    .highlight p {
      margin: 0;
      color: var(--navy-800);
    }

    .criteria-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
      margin: 28px 0;
    }

    .criteria-card {
      padding: 20px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: linear-gradient(145deg, #ffffff, #f7faff);
    }

    .criteria-number {
      display: inline-flex;
      width: 30px;
      height: 30px;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
      border-radius: 50%;
      background: var(--navy-900);
      color: var(--gold);
      font-size: 0.82rem;
      font-weight: 800;
    }

    .criteria-card h3 {
      margin: 0 0 8px;
      color: var(--navy-900);
    }

    .criteria-card p {
      margin: 0;
      font-size: 0.93rem;
    }

    .spec-table-wrap {
      overflow-x: auto;
      margin: 24px 0 8px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
    }

    .spec-table {
      width: 100%;
      min-width: 590px;
      border-collapse: collapse;
      font-size: 0.92rem;
    }

    .spec-table th,
    .spec-table td {
      padding: 14px 16px;
      border-bottom: 1px solid var(--line);
      text-align: left;
      vertical-align: top;
    }

    .spec-table tr:last-child th,
    .spec-table tr:last-child td {
      border-bottom: 0;
    }

    .spec-table th {
      width: 35%;
      background: #f5f8fc;
      color: var(--navy-900);
      font-weight: 800;
    }

    .spec-table td {
      color: #405268;
    }

    .decision-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin: 28px 0;
    }

    .decision-box > div {
      padding: 21px;
      border-radius: var(--radius-md);
    }

    .decision-box .yes {
      border: 1px solid #bddbcf;
      background: #f0faf5;
    }

    .decision-box .check {
      border: 1px solid #c8d7e7;
      background: #f2f7fc;
    }

    .decision-box h3 {
      margin: 0 0 10px;
      color: var(--navy-900);
    }

    .decision-box p {
      margin: 0;
      font-size: 0.93rem;
    }

    .formula {
      margin: 24px 0;
      padding: 22px;
      overflow-x: auto;
      border-radius: var(--radius-md);
      background: var(--navy-950);
      color: #eaf4ff;
      font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
      font-size: 0.94rem;
      white-space: nowrap;
    }

    .faq-list {
      display: grid;
      gap: 12px;
      margin-top: 24px;
    }

    .faq-item {
      padding: 20px 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: #fbfdff;
    }

    .faq-item h3 {
      margin: 0 0 8px;
      font-family: inherit;
      font-size: 1.02rem;
      letter-spacing: 0;
    }

    .faq-item p {
      margin: 0;
      font-size: 0.94rem;
    }

    .sources {
      display: grid;
      gap: 11px;
      margin-top: 22px;
      padding: 20px;
      border-radius: var(--radius-md);
      background: var(--navy-950);
      color: #dbe9f7;
    }

    .sources h3 {
      margin: 0 0 3px;
      color: var(--white);
      font-family: inherit;
      font-size: 1rem;
      letter-spacing: 0;
    }

    .sources a {
      color: #b9dcff;
      font-size: 0.86rem;
      overflow-wrap: anywhere;
    }

    .sidebar {
      position: sticky;
      top: 22px;
      display: grid;
      gap: 16px;
    }

    .side-card {
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      box-shadow: 0 12px 32px rgba(6, 21, 43, 0.07);
    }

    .side-card h2,
    .side-card h3 {
      margin: 0 0 15px;
      color: var(--navy-900);
      font-family: inherit;
      font-size: 1rem;
      letter-spacing: 0;
    }

    .toc {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .toc a {
      display: block;
      padding-left: 12px;
      border-left: 2px solid #d7e3ef;
      color: var(--muted);
      font-size: 0.88rem;
      text-decoration: none;
    }

    .toc a:hover {
      border-left-color: var(--gold);
      color: var(--navy-700);
    }

    .quote-card {
      background: var(--navy-900);
      color: var(--white);
    }

    .quote-card h3 {
      color: var(--white);
    }

    .quote-card p {
      margin: 0 0 18px;
      color: #d5e4f3;
      font-size: 0.9rem;
    }

    .quote-card .button {
      width: 100%;
    }

    .mini-list {
      display: grid;
      gap: 11px;
      margin: 0;
      padding: 0;
      list-style: none;
      color: var(--muted);
      font-size: 0.87rem;
    }

    .mini-list li {
      position: relative;
      padding-left: 20px;
    }

    .mini-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      color: var(--gold);
      font-weight: 900;
    }

    .closing {
      margin-bottom: 70px;
      padding: 0 22px;
    }

    .closing-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      padding: 30px clamp(24px, 5vw, 54px);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(110deg, rgba(255,255,255,0.04), transparent),
        var(--navy-800);
      color: var(--white);
      box-shadow: var(--shadow);
    }

    .closing h2 {
      margin: 0 0 8px;
      font-size: clamp(1.55rem, 3vw, 2.3rem);
    }

    .closing p {
      max-width: 700px;
      margin: 0;
      color: #d5e4f3;
    }

    .footer {
      padding: 28px 22px 38px;
      border-top: 1px solid var(--line);
      background: var(--white);
      color: var(--muted);
      text-align: center;
      font-size: 0.84rem;
    }

    .footer p {
      max-width: 900px;
      margin: 0 auto;
    }

    @media (max-width: 900px) {
      .hero-inner,
      .article-layout {
        grid-template-columns: 1fr;
      }

      .hero-inner {
        gap: 34px;
      }

      .hero-visual {
        max-width: 680px;
      }

      .sidebar {
        position: static;
        grid-template-columns: 1fr 1fr;
      }

      .sidebar .quote-card {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 620px) {
      .hero,
      .article-layout,
      .closing {
        padding-left: 14px;
        padding-right: 14px;
      }

      h1 {
        font-size: 2.45rem;
      }

      .hero-image-frame,
      .hero-image-frame img {
        min-height: 300px;
      }

      .hero-stats,
      .criteria-grid,
      .decision-box,
      .sidebar {
        grid-template-columns: 1fr;
      }

      .sidebar .quote-card {
        grid-column: auto;
      }

      .closing-inner {
        align-items: flex-start;
        flex-direction: column;
      }

      .closing .button {
        width: 100%;
      }
    }