:root {
      --bg: #fbfaf6;
      --panel: #ffffff;
      --panel-soft: #f5f0e8;
      --text: #24221f;
      --muted: #6f665d;
      --line: #e6ded2;
      --accent: #9b5b34;
      --accent-dark: #6f3c22;
      --accent-soft: #ead8c9;
      --green: #60715b;
      --shadow: 0 18px 50px rgba(75, 54, 35, 0.09);
      --radius: 22px;
      --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", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 8% 8%, rgba(234, 216, 201, 0.8), transparent 28%),
        radial-gradient(circle at 92% 12%, rgba(214, 225, 204, 0.78), transparent 30%),
        linear-gradient(180deg, #fbfaf6 0%, #f8f3ec 46%, #fbfaf6 100%);
      line-height: 1.7;
    }

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

    .container {
      width: min(var(--container), calc(100% - 40px));
      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(230, 222, 210, 0.75);
    }

    .nav {
      min-height: 72px;
      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;
      white-space: nowrap;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--accent), #d6a47c);
      box-shadow: 0 10px 24px rgba(155, 91, 52, 0.22);
      position: relative;
      flex: 0 0 auto;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      width: 12px;
      height: 18px;
      border: 2px solid #fff9f1;
      border-radius: 5px;
      left: 10px;
      top: 7px;
    }

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

    .nav-links a {
      padding: 9px 12px;
      border-radius: 999px;
      color: #554b42;
      font-size: 14px;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .nav-links a:hover {
      background: var(--panel-soft);
      color: var(--accent-dark);
    }

    .menu-btn {
      display: none;
      border: 1px solid var(--line);
      background: #fffaf4;
      color: var(--text);
      border-radius: 999px;
      padding: 9px 13px;
      font: inherit;
      cursor: pointer;
    }

    main {
      overflow: hidden;
    }

    .hero {
      padding: 70px 0 42px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.18fr) minmax(280px, 0.82fr);
      gap: 34px;
      align-items: start;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent-dark);
      background: rgba(234, 216, 201, 0.72);
      border: 1px solid rgba(155, 91, 52, 0.16);
      border-radius: 999px;
      padding: 7px 12px;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 5px rgba(96, 113, 91, 0.14);
    }

    h1 {
      margin: 0;
      font-size: clamp(34px, 6vw, 64px);
      line-height: 1.08;
      letter-spacing: -0.06em;
      color: #211d19;
    }

    .hero-lead {
      max-width: 720px;
      margin: 22px 0 0;
      font-size: clamp(17px, 2.4vw, 21px);
      color: #564c43;
    }

    .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 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

    .btn-primary {
      background: var(--accent-dark);
      color: #fffaf4;
      box-shadow: 0 14px 28px rgba(111, 60, 34, 0.18);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.72);
      color: var(--accent-dark);
      border: 1px solid var(--line);
    }

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

    .hero-note {
      background: rgba(255, 255, 255, 0.82);
      border: 1px solid rgba(230, 222, 210, 0.95);
      border-radius: 28px;
      box-shadow: var(--shadow);
      padding: 22px;
      position: relative;
      isolation: isolate;
    }

    .hero-note::before {
      content: "";
      position: absolute;
      inset: 12px;
      border-radius: 22px;
      border: 1px dashed rgba(155, 91, 52, 0.22);
      z-index: -1;
    }

    .note-title {
      margin: 0 0 12px;
      font-size: 20px;
      line-height: 1.35;
      color: #2c2520;
    }

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

    .note-list li {
      display: grid;
      grid-template-columns: 28px 1fr;
      gap: 10px;
      align-items: start;
      color: #574d44;
    }

    .note-list span {
      width: 28px;
      height: 28px;
      border-radius: 10px;
      background: var(--panel-soft);
      color: var(--accent-dark);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 14px;
    }

    .section {
      padding: 42px 0;
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 24px;
    }

    .section-kicker {
      margin: 0 0 8px;
      color: var(--accent-dark);
      font-size: 14px;
      font-weight: 900;
      letter-spacing: 0.08em;
    }

    h2 {
      margin: 0;
      font-size: clamp(26px, 4vw, 40px);
      line-height: 1.18;
      letter-spacing: -0.04em;
      color: #25201c;
    }

    .section-head p {
      margin: 12px 0 0;
      color: var(--muted);
      font-size: 16px;
    }

    .answer-panel {
      display: grid;
      grid-template-columns: 1fr;
      gap: 14px;
      background: rgba(255, 255, 255, 0.7);
      border: 1px solid var(--line);
      border-radius: 30px;
      padding: 18px;
      box-shadow: var(--shadow);
    }

    .answer-row {
      display: grid;
      grid-template-columns: minmax(110px, 0.25fr) 1fr;
      gap: 18px;
      padding: 18px;
      border-radius: 22px;
      background: #fffdf9;
      border: 1px solid rgba(230, 222, 210, 0.8);
    }

    .answer-row strong {
      color: var(--accent-dark);
      font-size: 18px;
    }

    .answer-row p {
      margin: 0;
      color: #554c43;
    }

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

    .card {
      background: rgba(255, 255, 255, 0.82);
      border: 1px solid rgba(230, 222, 210, 0.94);
      border-radius: 24px;
      padding: 22px;
      box-shadow: 0 12px 34px rgba(75, 54, 35, 0.07);
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: 0 18px 44px rgba(75, 54, 35, 0.12);
      border-color: rgba(155, 91, 52, 0.28);
    }

    .card-icon {
      width: 42px;
      height: 42px;
      border-radius: 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--panel-soft);
      color: var(--accent-dark);
      font-weight: 900;
      margin-bottom: 14px;
    }

    h3 {
      margin: 0 0 10px;
      font-size: 20px;
      line-height: 1.35;
      color: #2b251f;
    }

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

    .split {
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
      gap: 18px;
      align-items: start;
    }

    .soft-box {
      background: rgba(245, 240, 232, 0.88);
      border: 1px solid rgba(230, 222, 210, 0.9);
      border-radius: 28px;
      padding: 24px;
    }

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

    .check-list li {
      display: grid;
      grid-template-columns: 24px 1fr;
      gap: 10px;
      color: #53493f;
    }

    .check-list li::before {
      content: "✓";
      width: 24px;
      height: 24px;
      border-radius: 9px;
      background: #ffffff;
      color: var(--green);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      box-shadow: inset 0 0 0 1px rgba(96, 113, 91, 0.18);
    }

    .steps {
      counter-reset: step;
      display: grid;
      gap: 12px;
    }

    .step {
      counter-increment: step;
      display: grid;
      grid-template-columns: 44px 1fr;
      gap: 14px;
      align-items: start;
      background: rgba(255, 255, 255, 0.84);
      border: 1px solid var(--line);
      border-radius: 22px;
      padding: 18px;
    }

    .step::before {
      content: counter(step);
      width: 44px;
      height: 44px;
      border-radius: 16px;
      background: var(--accent-dark);
      color: #fffaf4;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
    }

    .step p {
      margin: 6px 0 0;
      color: var(--muted);
    }

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

    .faq-item {
      background: rgba(255, 255, 255, 0.84);
      border: 1px solid var(--line);
      border-radius: 22px;
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      border: 0;
      background: transparent;
      color: var(--text);
      padding: 18px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      text-align: left;
      font: inherit;
      font-weight: 900;
      cursor: pointer;
    }

    .faq-question span {
      flex: 1;
    }

    .faq-question i {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--panel-soft);
      color: var(--accent-dark);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-style: normal;
      transition: transform 0.2s ease;
      flex: 0 0 auto;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.25s ease;
    }

    .faq-answer p {
      margin: 0;
      padding: 0 20px 18px;
      color: var(--muted);
    }

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

    .cta {
      padding: 44px 0 54px;
    }

    .cta-box {
      border-radius: 32px;
      padding: clamp(24px, 5vw, 42px);
      background:
        linear-gradient(135deg, rgba(111, 60, 34, 0.94), rgba(155, 91, 52, 0.86)),
        radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.18), transparent 30%);
      color: #fffaf4;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
      box-shadow: 0 22px 60px rgba(111, 60, 34, 0.2);
    }

    .cta-box h2 {
      color: #fffaf4;
    }

    .cta-box p {
      margin: 12px 0 0;
      color: rgba(255, 250, 244, 0.86);
      max-width: 720px;
    }

    .cta-box .btn {
      background: #fffaf4;
      color: var(--accent-dark);
      white-space: nowrap;
    }

    .site-footer {
      border-top: 1px solid var(--line);
      background: #f3eee6;
      color: #3b332d;
    }

    .footer-inner {
      padding: 24px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      font-size: 14px;
    }

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

    .footer-links a {
      color: #5c5047;
    }

    .footer-links a:hover {
      color: var(--accent-dark);
    }

    .back-top {
      position: fixed;
      right: 18px;
      bottom: 18px;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 1px solid var(--line);
      background: #fffaf4;
      color: var(--accent-dark);
      box-shadow: 0 14px 30px rgba(75, 54, 35, 0.14);
      cursor: pointer;
      opacity: 0;
      pointer-events: none;
      transform: translateY(10px);
      transition: opacity 0.2s ease, transform 0.2s ease;
      font-weight: 900;
    }

    .back-top.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);
    }

    @media (max-width: 860px) {
      .nav {
        min-height: 64px;
      }

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

      .nav-links {
        position: absolute;
        left: 20px;
        right: 20px;
        top: 68px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        background: #fffdf9;
        border: 1px solid var(--line);
        border-radius: 20px;
        padding: 10px;
        box-shadow: var(--shadow);
      }

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

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

      .hero {
        padding-top: 46px;
      }

      .hero-grid,
      .split,
      .cta-box {
        grid-template-columns: 1fr;
      }

      .cards {
        grid-template-columns: 1fr;
      }

      .answer-row {
        grid-template-columns: 1fr;
      }

      .cta-box .btn {
        justify-self: start;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(var(--container), calc(100% - 28px));
      }

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

      .btn {
        width: 100%;
      }

      .card,
      .soft-box,
      .hero-note {
        border-radius: 22px;
        padding: 18px;
      }

      .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;
      }
    }