:root {
      --bg: #fbfaf6;
      --panel: #ffffff;
      --panel-soft: #f4efe6;
      --text: #202124;
      --muted: #62666d;
      --line: #e7dfd2;
      --brand: #8b5e34;
      --brand-strong: #6f4725;
      --accent: #d99b55;
      --shadow: 0 18px 45px rgba(91, 68, 41, 0.09);
      --radius: 24px;
      --container: 1120px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(217, 155, 85, 0.16), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(139, 94, 52, 0.11), transparent 30%),
        linear-gradient(180deg, #fbfaf6 0%, #f7f2ea 52%, #fbfaf6 100%);
      line-height: 1.7;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(251, 250, 246, 0.86);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(231, 223, 210, 0.8);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--brand-strong);
      white-space: nowrap;
    }

    .brand-mark {
      width: 36px;
      height: 36px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: linear-gradient(135deg, var(--brand), var(--accent));
      box-shadow: 0 10px 22px rgba(139, 94, 52, 0.22);
      font-size: 18px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 6px;
      flex-wrap: wrap;
    }

    .nav-links a {
      padding: 10px 12px;
      border-radius: 999px;
      color: #4a443d;
      font-size: 14px;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .nav-links a:hover,
    .nav-links a:focus-visible {
      background: #efe6d9;
      color: var(--brand-strong);
      outline: none;
    }

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #ffffff;
      color: var(--text);
      border-radius: 14px;
      padding: 10px 12px;
      font-size: 14px;
      min-height: 44px;
      cursor: pointer;
    }

    main {
      padding: 36px 0 0;
    }

    .hero {
      padding: 34px 0 28px;
    }

    .hero-panel {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
      gap: 28px;
      align-items: stretch;
    }

    .hero-copy,
    .hero-note {
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid rgba(231, 223, 210, 0.9);
      border-radius: calc(var(--radius) + 8px);
      box-shadow: var(--shadow);
    }

    .hero-copy {
      padding: clamp(28px, 5vw, 56px);
      position: relative;
      overflow: hidden;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      right: -70px;
      bottom: -80px;
      width: 210px;
      height: 210px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(217, 155, 85, 0.2), transparent 68%);
      pointer-events: none;
      animation: floatGlow 8s ease-in-out infinite alternate;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: #f3eadc;
      color: var(--brand-strong);
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--accent);
    }

    h1 {
      margin: 0;
      font-size: clamp(34px, 6vw, 64px);
      line-height: 1.08;
      letter-spacing: -0.05em;
      color: #1f1b17;
    }

    .hero-lead {
      margin: 22px 0 0;
      max-width: 680px;
      color: #4f4a44;
      font-size: clamp(16px, 2.2vw, 19px);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 30px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 12px 18px;
      border-radius: 999px;
      font-weight: 800;
      transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    }

    .btn-primary {
      background: var(--brand-strong);
      color: #ffffff;
      box-shadow: 0 12px 24px rgba(111, 71, 37, 0.18);
    }

    .btn-secondary {
      background: #ffffff;
      color: var(--brand-strong);
      border: 1px solid var(--line);
    }

    .btn:hover,
    .btn:focus-visible {
      transform: translateY(-2px);
      outline: none;
    }

    .btn-primary:hover,
    .btn-primary:focus-visible {
      box-shadow: 0 16px 32px rgba(111, 71, 37, 0.24);
    }

    .hero-note {
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 22px;
    }

    .note-title {
      margin: 0;
      font-size: 22px;
      line-height: 1.35;
      color: #211d19;
    }

    .check-list {
      list-style: none;
      padding: 0;
      margin: 18px 0 0;
      display: grid;
      gap: 12px;
    }

    .check-list li {
      display: grid;
      grid-template-columns: 22px 1fr;
      gap: 10px;
      color: #4e4942;
      font-size: 15px;
    }

    .check-list li::before {
      content: "✓";
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #efe4d4;
      color: var(--brand-strong);
      font-weight: 900;
      line-height: 1;
      margin-top: 2px;
    }

    .mini-card {
      padding: 18px;
      border-radius: 20px;
      background: linear-gradient(135deg, #f7efe3, #ffffff);
      border: 1px solid var(--line);
    }

    .mini-card strong {
      display: block;
      color: var(--brand-strong);
      margin-bottom: 6px;
    }

    .mini-card p {
      margin: 0;
      color: #5d5851;
      font-size: 14px;
    }

    .section {
      padding: 44px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 22px;
    }

    .section-kicker {
      margin: 0 0 8px;
      color: var(--brand);
      font-size: 14px;
      font-weight: 800;
      letter-spacing: 0.08em;
    }

    h2 {
      margin: 0;
      font-size: clamp(26px, 4vw, 40px);
      line-height: 1.18;
      letter-spacing: -0.035em;
      color: #211d19;
    }

    .section-desc {
      max-width: 420px;
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .criteria-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
    }

    .criteria-card {
      background: rgba(255, 255, 255, 0.84);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 22px;
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    }

    .criteria-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
      border-color: #dbc8ad;
    }

    .card-number {
      width: 38px;
      height: 38px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: var(--brand);
      font-weight: 900;
      margin-bottom: 16px;
    }

    h3 {
      margin: 0;
      font-size: 19px;
      line-height: 1.35;
      color: #25211d;
    }

    .criteria-card p,
    .repair-card p,
    .faq p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 15px;
    }

    .split {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
      gap: 18px;
      align-items: start;
    }

    .soft-panel {
      background: var(--panel-soft);
      border: 1px solid #e3d7c4;
      border-radius: var(--radius);
      padding: 26px;
    }

    .soft-panel p {
      margin: 14px 0 0;
      color: #5d554b;
    }

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

    .repair-card {
      background: rgba(255, 255, 255, 0.88);
      border: 1px solid var(--line);
      border-radius: 22px;
      padding: 20px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 16px;
      align-items: start;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 6px 10px;
      border-radius: 999px;
      background: #f5eadb;
      color: var(--brand-strong);
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

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

    .step {
      counter-increment: step;
      position: relative;
      padding: 22px;
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.82);
      border: 1px solid var(--line);
    }

    .step::before {
      content: counter(step);
      display: grid;
      place-items: center;
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background: #2b2925;
      color: #ffffff;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .step p {
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 15px;
    }

    .notice {
      border-radius: calc(var(--radius) + 4px);
      background:
        linear-gradient(135deg, rgba(111, 71, 37, 0.08), rgba(217, 155, 85, 0.12)),
        #ffffff;
      border: 1px solid #e4d5bf;
      padding: clamp(24px, 4vw, 34px);
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(240px, 0.55fr);
      gap: 26px;
      align-items: center;
    }

    .notice ul {
      margin: 16px 0 0;
      padding-left: 20px;
      color: #575149;
    }

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

    .quote-box {
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: 22px;
      padding: 22px;
      color: #4f4942;
      box-shadow: 0 12px 28px rgba(91, 68, 41, 0.07);
    }

    .quote-box strong {
      display: block;
      color: var(--brand-strong);
      margin-bottom: 8px;
    }

    .faq {
      display: grid;
      gap: 12px;
    }

    details {
      background: rgba(255, 255, 255, 0.86);
      border: 1px solid var(--line);
      border-radius: 20px;
      padding: 0;
      overflow: hidden;
    }

    summary {
      cursor: pointer;
      list-style: none;
      padding: 18px 20px;
      font-weight: 850;
      color: #25211d;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      min-height: 56px;
    }

    summary::-webkit-details-marker {
      display: none;
    }

    summary::after {
      content: "+";
      width: 26px;
      height: 26px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #f0e6d7;
      color: var(--brand-strong);
      flex: 0 0 auto;
      transition: transform 0.2s ease;
    }

    details[open] summary::after {
      transform: rotate(45deg);
    }

    details p {
      padding: 0 20px 18px;
    }

    .closing {
      padding: 34px;
      border-radius: calc(var(--radius) + 6px);
      background: #26211d;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .closing h2 {
      color: #ffffff;
      max-width: 680px;
    }

    .closing p {
      margin: 12px 0 0;
      color: #e8ded0;
      max-width: 660px;
    }

    .closing .btn {
      background: #ffffff;
      color: #2a241f;
      flex: 0 0 auto;
    }

    .site-footer {
      margin-top: 28px;
      background: #efe7db;
      border-top: 1px solid #ddcfbc;
      color: #312c27;
    }

    .footer-inner {
      min-height: 84px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 22px 0;
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .footer-links a {
      color: #4d4238;
      font-weight: 700;
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.55s ease, transform 0.55s ease;
    }

    .reveal.is-visible {
      opacity: 1;
      transform: translateY(0);
    }

    @keyframes floatGlow {
      from {
        transform: translate3d(0, 0, 0) scale(1);
      }
      to {
        transform: translate3d(-18px, -12px, 0) scale(1.08);
      }
    }

    @media (max-width: 920px) {
      .hero-panel,
      .split,
      .notice {
        grid-template-columns: 1fr;
      }

      .criteria-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .section-head {
        align-items: flex-start;
        flex-direction: column;
      }

      .section-desc {
        max-width: 720px;
      }

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

    @media (max-width: 720px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .nav {
        min-height: 66px;
      }

      .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }

      .nav-links {
        position: absolute;
        left: 14px;
        right: 14px;
        top: 72px;
        display: none;
        padding: 12px;
        border: 1px solid var(--line);
        border-radius: 20px;
        background: #fffdf9;
        box-shadow: var(--shadow);
        justify-content: flex-start;
      }

      .nav-links.is-open {
        display: flex;
      }

      .nav-links a {
        width: 100%;
        padding: 12px 14px;
      }

      main {
        padding-top: 18px;
      }

      .hero {
        padding-top: 18px;
      }

      .hero-copy,
      .hero-note,
      .soft-panel,
      .notice,
      .closing {
        border-radius: 24px;
      }

      .hero-actions {
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

      .criteria-grid,
      .steps {
        grid-template-columns: 1fr;
      }

      .repair-card {
        grid-template-columns: 1fr;
      }

      .tag {
        justify-self: start;
      }

      .section {
        padding: 34px 0;
      }

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

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }

      .reveal {
        opacity: 1;
        transform: none;
      }
    }