:root {
      --bg: #f7f3ec;
      --paper: #fffaf2;
      --card: #ffffff;
      --text: #23201d;
      --muted: #6f665d;
      --line: #e7ddd0;
      --accent: #9b5c32;
      --accent-2: #c98148;
      --soft: #f0e4d5;
      --green: #4f7f63;
      --shadow: 0 18px 50px rgba(83, 54, 31, 0.11);
      --radius: 24px;
      --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(201, 129, 72, 0.16), transparent 34%),
        radial-gradient(circle at 88% 14%, rgba(79, 127, 99, 0.12), transparent 28%),
        linear-gradient(180deg, #fbf6ee 0%, var(--bg) 46%, #f9f5ee 100%);
      line-height: 1.72;
      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(247, 243, 236, 0.86);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(231, 221, 208, 0.8);
    }

    .nav {
      min-height: 68px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: #2a2119;
      white-space: nowrap;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      background: linear-gradient(135deg, #a96538, #e2ae73);
      box-shadow: 0 8px 18px rgba(155, 92, 50, 0.25);
      position: relative;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 8px;
      border: 2px solid rgba(255, 255, 255, 0.82);
      border-radius: 7px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 22px;
      color: #5d544b;
      font-size: 14px;
    }

    .nav-links a {
      position: relative;
      padding: 6px 0;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 2px;
      width: 0;
      height: 2px;
      border-radius: 999px;
      background: var(--accent);
      transition: width 0.22s ease;
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    .menu-btn {
      display: none;
      border: 1px solid var(--line);
      background: #fffaf2;
      color: var(--text);
      border-radius: 12px;
      padding: 8px 12px;
      font-size: 14px;
      cursor: pointer;
    }

    main {
      padding: 38px 0 0;
    }

    .hero {
      padding: 30px 0 42px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.72fr);
      gap: 28px;
      align-items: stretch;
    }

    .hero-copy {
      padding: clamp(28px, 5vw, 58px);
      border: 1px solid rgba(231, 221, 208, 0.92);
      border-radius: 34px;
      background:
        linear-gradient(135deg, rgba(255, 250, 242, 0.96), rgba(255, 255, 255, 0.82)),
        linear-gradient(45deg, rgba(201, 129, 72, 0.1), rgba(79, 127, 99, 0.08));
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .hero-copy::before {
      content: "";
      position: absolute;
      right: -70px;
      top: -80px;
      width: 210px;
      height: 210px;
      border-radius: 50%;
      background: rgba(201, 129, 72, 0.13);
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin: 0 0 16px;
      padding: 7px 12px;
      border: 1px solid #eadcc9;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.72);
      color: #6a4a32;
      font-size: 13px;
      font-weight: 700;
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 5px rgba(79, 127, 99, 0.13);
    }

    h1 {
      margin: 0;
      max-width: 780px;
      font-size: clamp(32px, 6vw, 62px);
      line-height: 1.08;
      letter-spacing: -0.045em;
      color: #1f1a16;
    }

    .hero-text {
      margin: 22px 0 0;
      max-width: 720px;
      color: #5f554c;
      font-size: clamp(16px, 2vw, 18px);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      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: #2c241e;
      color: #ffffff;
      box-shadow: 0 12px 24px rgba(44, 36, 30, 0.18);
    }

    .btn-secondary {
      background: #ffffff;
      color: #3d332b;
      border: 1px solid var(--line);
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .hero-panel {
      border-radius: 34px;
      background: #fffdf8;
      border: 1px solid rgba(231, 221, 208, 0.92);
      box-shadow: var(--shadow);
      padding: 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 18px;
    }

    .screen-visual {
      aspect-ratio: 4 / 3;
      border-radius: 26px;
      background:
        radial-gradient(circle at 76% 26%, rgba(0, 0, 0, 0.78) 0 16%, rgba(30, 27, 24, 0.92) 17% 22%, transparent 23%),
        linear-gradient(135deg, #ede1d3 0%, #fff8ee 52%, #ead4bf 100%);
      border: 10px solid #2d2824;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.4), 0 18px 34px rgba(45,40,36,0.14);
      position: relative;
      overflow: hidden;
      animation: breathe 5.5s ease-in-out infinite;
    }

    .screen-visual::before {
      content: "";
      position: absolute;
      inset: 16px;
      border-radius: 14px;
      background:
        linear-gradient(115deg, rgba(255,255,255,0.55), transparent 42%),
        repeating-linear-gradient(90deg, rgba(155, 92, 50, 0.04) 0 1px, transparent 1px 9px);
    }

    .panel-note {
      margin: 0;
      color: #6c6258;
      font-size: 14px;
    }

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

    .quick-points li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 12px;
      border-radius: 16px;
      background: #f8f0e6;
      color: #3d332b;
      font-size: 14px;
    }

    .quick-points li span {
      width: 22px;
      height: 22px;
      flex: 0 0 auto;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 8px;
      background: #ffffff;
      color: var(--accent);
      font-weight: 900;
      line-height: 1;
    }

    .section {
      padding: 34px 0;
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.7fr) minmax(260px, 0.3fr);
      gap: 22px;
      align-items: end;
      margin-bottom: 20px;
    }

    h2 {
      margin: 0;
      color: #211b16;
      font-size: clamp(24px, 3.6vw, 38px);
      line-height: 1.2;
      letter-spacing: -0.025em;
    }

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

    .diagnosis-card {
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.84);
      border: 1px solid var(--line);
      box-shadow: 0 12px 34px rgba(83, 54, 31, 0.08);
      padding: clamp(20px, 3vw, 30px);
    }

    .split {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(300px, 1.1fr);
      gap: 22px;
      align-items: start;
    }

    .lead-box {
      border-radius: 22px;
      background: #2c241e;
      color: #ffffff;
      padding: 24px;
    }

    .lead-box h3 {
      color: #ffffff;
      margin: 0 0 12px;
      font-size: 21px;
      line-height: 1.35;
    }

    .lead-box p {
      margin: 0;
      color: rgba(255, 255, 255, 0.82);
      font-size: 15px;
    }

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

    .reason {
      display: grid;
      grid-template-columns: 34px 1fr;
      gap: 12px;
      padding: 16px;
      border-radius: 18px;
      background: #fffaf2;
      border: 1px solid #eadfce;
    }

    .reason strong {
      display: block;
      margin-bottom: 4px;
      color: #2b241e;
    }

    .reason p {
      margin: 0;
      color: #6a6259;
      font-size: 14px;
    }

    .num {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      background: #f0e3d3;
      color: #8a4d2d;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
    }

    .status-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }

    .status {
      padding: 20px;
      border-radius: 22px;
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 10px 28px rgba(83, 54, 31, 0.07);
      transition: transform 0.18s ease, box-shadow 0.18s ease;
    }

    .status:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 38px rgba(83, 54, 31, 0.11);
    }

    .status h3 {
      margin: 0 0 10px;
      font-size: 18px;
      color: #2a211a;
    }

    .status p {
      margin: 0;
      color: #6b6259;
      font-size: 14px;
    }

    .tag {
      display: inline-flex;
      margin-bottom: 12px;
      padding: 5px 10px;
      border-radius: 999px;
      background: #f3e6d7;
      color: #835033;
      font-size: 12px;
      font-weight: 800;
    }

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

    .step {
      position: relative;
      padding: 22px;
      border-radius: 22px;
      background: linear-gradient(180deg, #ffffff, #fff8ef);
      border: 1px solid var(--line);
      min-height: 190px;
    }

    .step::before {
      counter-increment: step;
      content: counter(step);
      display: inline-flex;
      width: 34px;
      height: 34px;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      background: #2c241e;
      color: #ffffff;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .step h3 {
      margin: 0 0 8px;
      color: #2a211a;
      font-size: 17px;
    }

    .step p {
      margin: 0;
      color: #6b6259;
      font-size: 14px;
    }

    .compare {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .compare-box {
      border-radius: 24px;
      padding: 24px;
      border: 1px solid var(--line);
      background: #ffffff;
    }

    .compare-box.safe {
      background: linear-gradient(180deg, #fbfff9, #ffffff);
      border-color: #d9eadb;
    }

    .compare-box.warn {
      background: linear-gradient(180deg, #fff9f2, #ffffff);
      border-color: #ead8c7;
    }

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

    .compare-box ul {
      margin: 0;
      padding-left: 18px;
      color: #5f554d;
    }

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

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

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 18px;
      background: #ffffff;
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      border: 0;
      background: #ffffff;
      color: #28211b;
      padding: 18px 20px;
      font-size: 16px;
      font-weight: 800;
      text-align: left;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      cursor: pointer;
    }

    .faq-question span {
      flex: 1;
    }

    .faq-question i {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: #f1e4d6;
      position: relative;
      flex: 0 0 auto;
    }

    .faq-question i::before,
    .faq-question i::after {
      content: "";
      position: absolute;
      background: #8d5534;
      border-radius: 4px;
      left: 7px;
      right: 7px;
      top: 11px;
      height: 2px;
    }

    .faq-question i::after {
      transform: rotate(90deg);
      transition: transform 0.18s ease;
    }

    .faq-item.open .faq-question i::after {
      transform: rotate(0deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.24s ease;
    }

    .faq-answer p {
      margin: 0;
      padding: 0 20px 18px;
      color: #6b6259;
      font-size: 15px;
    }

    .closing {
      padding: 30px;
      border-radius: 28px;
      background:
        linear-gradient(135deg, rgba(44, 36, 30, 0.94), rgba(101, 68, 45, 0.94)),
        radial-gradient(circle at 85% 20%, rgba(255, 255, 255, 0.18), transparent 30%);
      color: #ffffff;
      display: grid;
      grid-template-columns: minmax(0, 0.76fr) minmax(260px, 0.24fr);
      gap: 18px;
      align-items: center;
    }

    .closing h2 {
      color: #ffffff;
      font-size: clamp(24px, 3vw, 34px);
    }

    .closing p {
      margin: 10px 0 0;
      color: rgba(255, 255, 255, 0.82);
    }

    .closing .btn {
      background: #fff3e3;
      color: #2d241d;
      justify-self: end;
    }

    .related-pages {
      padding: 34px 0 28px;
    }

    .related-wrap {
      border-top: 1px solid var(--line);
      padding-top: 24px;
    }

    .related-pages h2 {
      font-size: clamp(22px, 3vw, 30px);
      margin-bottom: 16px;
    }

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

    .related-list a {
      display: block;
      padding: 14px 16px;
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--line);
      color: #3b3028;
      font-weight: 700;
      font-size: 14px;
      transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
    }

    .related-list a:hover {
      transform: translateY(-2px);
      border-color: #d7b48f;
      background: #ffffff;
    }

    .site-footer {
      background: #2b241e;
      color: #f8efe4;
      padding: 24px 0;
      margin-top: 0;
    }

    .footer-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      font-size: 13px;
      color: rgba(248, 239, 228, 0.82);
    }

    .footer-inner a {
      color: #f8efe4;
      font-weight: 700;
    }

    .backtop {
      position: fixed;
      right: 18px;
      bottom: 18px;
      width: 42px;
      height: 42px;
      border-radius: 50%;
      border: 1px solid #e7dccf;
      background: #ffffff;
      color: #3b3028;
      box-shadow: 0 12px 28px rgba(83, 54, 31, 0.16);
      cursor: pointer;
      opacity: 0;
      pointer-events: none;
      transform: translateY(8px);
      transition: opacity 0.2s ease, transform 0.2s ease;
    }

    .backtop.show {
      opacity: 1;
      pointer-events: auto;
      transform: translateY(0);
    }

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

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

    @keyframes breathe {
      0%, 100% {
        transform: translateY(0);
        filter: saturate(1);
      }
      50% {
        transform: translateY(-4px);
        filter: saturate(1.08);
      }
    }

    @media (max-width: 900px) {
      .hero-grid,
      .section-head,
      .split,
      .closing {
        grid-template-columns: 1fr;
      }

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

      .closing .btn {
        justify-self: start;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 68px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 12px;
        border: 1px solid var(--line);
        border-radius: 18px;
        background: #fffaf2;
        box-shadow: var(--shadow);
      }

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

      .nav-links a {
        padding: 10px 12px;
        border-radius: 12px;
      }

      .nav-links a:hover {
        background: #f5eadc;
      }

      .nav-links a::after {
        display: none;
      }

      .menu-btn {
        display: inline-flex;
      }
    }

    @media (max-width: 640px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      .nav {
        min-height: 62px;
      }

      main {
        padding-top: 22px;
      }

      .hero {
        padding: 14px 0 28px;
      }

      .hero-copy,
      .hero-panel,
      .diagnosis-card,
      .closing {
        border-radius: 24px;
      }

      .hero-copy {
        padding: 24px;
      }

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

      .btn {
        width: 100%;
      }

      .status-grid,
      .steps,
      .compare,
      .related-list {
        grid-template-columns: 1fr;
      }

      .section {
        padding: 26px 0;
      }

      .step {
        min-height: auto;
      }

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