:root {
      --bg: #fbfaf6;
      --panel: #ffffff;
      --panel-soft: #f3efe7;
      --text: #24211d;
      --muted: #6f675d;
      --line: #e5ded2;
      --accent: #8a5b34;
      --accent-strong: #6f4324;
      --accent-soft: #efe3d5;
      --green: #536b52;
      --shadow: 0 18px 45px rgba(92, 70, 48, 0.10);
      --radius-xl: 28px;
      --radius-lg: 20px;
      --radius-md: 14px;
      --container: 1120px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 4%, rgba(239, 227, 213, 0.95), transparent 30%),
        radial-gradient(circle at 88% 18%, rgba(223, 234, 219, 0.72), transparent 28%),
        linear-gradient(180deg, #fbfaf6 0%, #f7f2ea 48%, #fbfaf6 100%);
      line-height: 1.75;
      overflow-x: hidden;
    }

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

    .container {
      width: min(100% - 32px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(251, 250, 246, 0.86);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(229, 222, 210, 0.72);
    }

    .nav {
      min-height: 70px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--text);
      white-space: nowrap;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--accent), #cf9b62);
      box-shadow: 0 10px 24px rgba(138, 91, 52, 0.22);
      position: relative;
      flex: 0 0 auto;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 9px;
      border: 2px solid rgba(255, 255, 255, 0.78);
      border-radius: 7px;
    }

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

    .nav-links a {
      padding: 9px 12px;
      color: #4a433b;
      border-radius: 999px;
      font-size: 14px;
      transition: background 0.2s ease, color 0.2s ease;
    }

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

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: var(--panel);
      color: var(--text);
      border-radius: 999px;
      padding: 9px 12px;
      font-size: 14px;
      cursor: pointer;
    }

    main {
      padding: 42px 0 0;
    }

    .hero {
      padding: 34px 0 30px;
    }

    .hero-shell {
      display: grid;
      grid-template-columns: minmax(0, 1.18fr) minmax(280px, 0.82fr);
      gap: 26px;
      align-items: stretch;
    }

    .hero-copy {
      background: rgba(255, 255, 255, 0.72);
      border: 1px solid rgba(229, 222, 210, 0.86);
      border-radius: var(--radius-xl);
      padding: clamp(28px, 5vw, 58px);
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .hero-copy::before {
      content: "";
      position: absolute;
      width: 220px;
      height: 220px;
      right: -82px;
      top: -92px;
      border-radius: 999px;
      background: rgba(239, 227, 213, 0.68);
    }

    .eyebrow {
      position: relative;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin: 0 0 18px;
      padding: 7px 12px;
      border-radius: 999px;
      background: #f2eadf;
      color: var(--accent-strong);
      font-size: 13px;
      font-weight: 700;
    }

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

    h1 {
      position: relative;
      margin: 0;
      font-size: clamp(32px, 7vw, 58px);
      line-height: 1.1;
      letter-spacing: -0.045em;
      color: #201c18;
    }

    .lead {
      position: relative;
      margin: 22px 0 0;
      max-width: 680px;
      color: #5f574e;
      font-size: clamp(16px, 2.3vw, 19px);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 11px 18px;
      border-radius: 999px;
      font-weight: 750;
      border: 1px solid transparent;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

    .btn-primary {
      background: var(--accent);
      color: #ffffff;
      box-shadow: 0 12px 24px rgba(138, 91, 52, 0.22);
    }

    .btn-secondary {
      background: #ffffff;
      color: var(--accent-strong);
      border-color: var(--line);
    }

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

    .btn-primary:hover,
    .btn-primary:focus-visible {
      background: var(--accent-strong);
      box-shadow: 0 16px 30px rgba(111, 67, 36, 0.26);
    }

    .diagnose-card {
      background: linear-gradient(160deg, #ffffff 0%, #f6efe6 100%);
      border: 1px solid rgba(229, 222, 210, 0.9);
      border-radius: var(--radius-xl);
      padding: 24px;
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 22px;
      min-width: 0;
    }

    .signal {
      border-radius: 24px;
      background: #fbfaf6;
      border: 1px solid var(--line);
      padding: 22px;
      position: relative;
      overflow: hidden;
    }

    .signal::before,
    .signal::after {
      content: "";
      position: absolute;
      left: 22px;
      right: 22px;
      height: 2px;
      background: linear-gradient(90deg, transparent, rgba(138, 91, 52, 0.42), transparent);
      animation: scan 3.8s ease-in-out infinite;
    }

    .signal::before {
      top: 34%;
    }

    .signal::after {
      top: 63%;
      animation-delay: 1.2s;
    }

    .tablet-shape {
      width: min(100%, 270px);
      aspect-ratio: 4 / 3;
      margin: 0 auto;
      border: 10px solid #2d2924;
      border-radius: 26px;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.55), transparent 42%),
        repeating-linear-gradient(0deg, #eee5d9 0 8px, #e2d7c8 8px 10px);
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.6), 0 14px 35px rgba(36, 33, 29, 0.12);
    }

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

    .quick-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: #4f473f;
      font-size: 15px;
    }

    .quick-list span {
      width: 22px;
      height: 22px;
      flex: 0 0 auto;
      border-radius: 50%;
      background: #e7dccf;
      color: var(--accent-strong);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: 800;
      margin-top: 3px;
    }

    section {
      scroll-margin-top: 92px;
    }

    .section {
      padding: 38px 0;
    }

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

    .section-kicker {
      margin: 0 0 6px;
      color: var(--accent-strong);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 0.08em;
    }

    h2 {
      margin: 0;
      font-size: clamp(24px, 4vw, 36px);
      line-height: 1.22;
      letter-spacing: -0.025em;
      color: #211d19;
    }

    .section-note {
      margin: 0;
      max-width: 430px;
      color: var(--muted);
      font-size: 15px;
    }

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

    .cause-card {
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 22px;
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .cause-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 38px rgba(92, 70, 48, 0.10);
      border-color: #d6c8b8;
    }

    .cause-card h3 {
      margin: 0 0 10px;
      font-size: 18px;
      line-height: 1.35;
      color: #26211d;
    }

    .cause-card p {
      margin: 0;
      color: #665d53;
      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);
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      padding: clamp(22px, 4vw, 34px);
      box-shadow: 0 12px 32px rgba(92, 70, 48, 0.07);
    }

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

    .check-list li {
      display: grid;
      grid-template-columns: 28px minmax(0, 1fr);
      gap: 10px;
      align-items: start;
      color: #514941;
    }

    .check-list b {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
      border-radius: 10px;
      background: #eff4eb;
      color: var(--green);
      font-size: 14px;
    }

    .steps {
      counter-reset: step;
      display: grid;
      gap: 14px;
    }

    .step {
      counter-increment: step;
      display: grid;
      grid-template-columns: 46px minmax(0, 1fr);
      gap: 14px;
      padding: 18px;
      border-radius: var(--radius-lg);
      background: rgba(246, 239, 230, 0.72);
      border: 1px solid #e8ddcf;
    }

    .step::before {
      content: counter(step);
      width: 46px;
      height: 46px;
      border-radius: 16px;
      background: var(--accent);
      color: #ffffff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 850;
      box-shadow: 0 10px 20px rgba(138, 91, 52, 0.18);
    }

    .step h3 {
      margin: 0 0 5px;
      font-size: 17px;
    }

    .step p {
      margin: 0;
      color: #645b52;
      font-size: 15px;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      overflow: hidden;
      border-radius: var(--radius-lg);
      background: var(--panel);
      border: 1px solid var(--line);
    }

    .compare-table th,
    .compare-table td {
      text-align: left;
      vertical-align: top;
      padding: 16px;
      border-bottom: 1px solid var(--line);
      color: #524a42;
      font-size: 15px;
    }

    .compare-table th {
      color: #2c2722;
      background: #f3eadf;
      font-weight: 800;
      white-space: nowrap;
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .tips-band {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .tip-box {
      background: linear-gradient(160deg, #ffffff, #f5efe6);
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      padding: 26px;
    }

    .tip-box h3 {
      margin: 0 0 12px;
      font-size: 20px;
    }

    .tip-box p {
      margin: 0;
      color: #625950;
      font-size: 15px;
    }

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

    .faq-item {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, 0.78);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      padding: 18px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 14px;
      border: 0;
      background: transparent;
      color: #26211d;
      font: inherit;
      font-weight: 800;
      text-align: left;
      cursor: pointer;
    }

    .faq-question span {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: #f1e7da;
      color: var(--accent-strong);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex: 0 0 auto;
      transition: transform 0.22s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.28s ease;
    }

    .faq-answer p {
      margin: 0;
      padding: 0 20px 18px;
      color: #655c52;
      font-size: 15px;
    }

    .faq-item.active .faq-answer {
      max-height: 220px;
    }

    .faq-item.active .faq-question span {
      transform: rotate(45deg);
    }

    .related-pages {
      padding: 38px 0 28px;
    }

    .related-box {
      background: #ffffff;
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      padding: clamp(22px, 4vw, 30px);
      box-shadow: 0 14px 34px rgba(92, 70, 48, 0.08);
    }

    .related-box h2 {
      font-size: clamp(22px, 3.4vw, 30px);
      margin-bottom: 18px;
    }

    .related-list {
      margin: 0;
      padding: 0;
      list-style: none;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }

    .related-list a {
      min-height: 58px;
      display: flex;
      align-items: center;
      padding: 14px 15px;
      border-radius: 16px;
      background: #f8f3ec;
      color: #3a332d;
      border: 1px solid #eadfd1;
      font-size: 14px;
      transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
    }

    .related-list a:hover,
    .related-list a:focus-visible {
      background: #efe3d5;
      border-color: #d9c6b1;
      transform: translateY(-2px);
      outline: none;
    }

    .site-footer {
      background: #2b261f;
      color: #f7f2ea;
      margin-top: 0;
    }

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

    .footer-inner p {
      margin: 0;
      color: #e6dacb;
    }

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

    .footer-links a {
      color: #f1e7da;
    }

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

    .reveal {
      opacity: 0;
      transform: translateY(14px);
      animation: rise 0.68s ease forwards;
    }

    .reveal:nth-child(2) {
      animation-delay: 0.08s;
    }

    .reveal:nth-child(3) {
      animation-delay: 0.16s;
    }

    @keyframes rise {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @keyframes scan {
      0%, 100% {
        transform: translateY(-10px);
        opacity: 0.28;
      }
      50% {
        transform: translateY(12px);
        opacity: 0.8;
      }
    }

    @media (max-width: 900px) {
      .hero-shell,
      .split,
      .tips-band {
        grid-template-columns: 1fr;
      }

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

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

      .diagnose-card {
        order: -1;
      }
    }

    @media (max-width: 720px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      .nav {
        min-height: 64px;
      }

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

      .nav-links {
        position: absolute;
        left: 12px;
        right: 12px;
        top: 72px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 12px;
        border: 1px solid var(--line);
        border-radius: 18px;
        background: #ffffff;
        box-shadow: var(--shadow);
      }

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

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

      main {
        padding-top: 22px;
      }

      .hero {
        padding-top: 22px;
      }

      .hero-copy,
      .diagnose-card,
      .soft-panel,
      .tip-box,
      .related-box {
        border-radius: 22px;
      }

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

      .btn {
        width: 100%;
      }

      .cause-grid,
      .related-list {
        grid-template-columns: 1fr;
      }

      .compare-table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
      }

      .step {
        grid-template-columns: 38px minmax(0, 1fr);
      }

      .step::before {
        width: 38px;
        height: 38px;
        border-radius: 13px;
      }

      .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;
      }
    }