:root {
      --bg: #f7f3ec;
      --bg-soft: #fffaf2;
      --card: #ffffff;
      --text: #25231f;
      --muted: #6f6a61;
      --line: #e7ddcf;
      --accent: #9a633c;
      --accent-strong: #7d4a28;
      --accent-soft: #f1dfcf;
      --green: #557a58;
      --shadow: 0 18px 50px rgba(112, 83, 52, 0.12);
      --radius: 22px;
      --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(240, 207, 171, 0.55), transparent 32%),
        radial-gradient(circle at 88% 20%, rgba(215, 227, 205, 0.48), transparent 30%),
        linear-gradient(180deg, var(--bg) 0%, #fbf7ef 44%, #f6efe5 100%);
      line-height: 1.75;
      overflow-x: hidden;
    }

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

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

    .skip-link {
      position: absolute;
      left: 16px;
      top: -60px;
      background: var(--text);
      color: #ffffff;
      padding: 10px 14px;
      border-radius: 10px;
      z-index: 20;
      transition: top 0.2s ease;
    }

    .skip-link:focus {
      top: 16px;
    }

    header {
      position: sticky;
      top: 0;
      z-index: 10;
      backdrop-filter: blur(18px);
      background: rgba(247, 243, 236, 0.82);
      border-bottom: 1px solid rgba(231, 221, 207, 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;
      color: #2b241d;
      white-space: nowrap;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      background:
        linear-gradient(135deg, #a5663b, #e6b476);
      box-shadow: 0 10px 24px rgba(154, 99, 60, 0.25);
      display: grid;
      place-items: center;
      color: #ffffff;
      font-size: 16px;
    }

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

    .nav-links a {
      color: #4c463d;
      font-size: 14px;
      padding: 9px 12px;
      border-radius: 999px;
      transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    }

    .nav-links a:hover {
      background: rgba(154, 99, 60, 0.1);
      color: var(--accent-strong);
      transform: translateY(-1px);
    }

    .menu-btn {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      background: rgba(255, 255, 255, 0.72);
      border-radius: 14px;
      color: var(--text);
      cursor: pointer;
      align-items: center;
      justify-content: center;
    }

    .menu-btn span {
      width: 18px;
      height: 2px;
      background: currentColor;
      position: relative;
      display: block;
      border-radius: 2px;
    }

    .menu-btn span::before,
    .menu-btn span::after {
      content: "";
      position: absolute;
      left: 0;
      width: 18px;
      height: 2px;
      background: currentColor;
      border-radius: 2px;
      transition: transform 0.2s ease, top 0.2s ease;
    }

    .menu-btn span::before {
      top: -6px;
    }

    .menu-btn span::after {
      top: 6px;
    }

    .menu-btn[aria-expanded="true"] span {
      background: transparent;
    }

    .menu-btn[aria-expanded="true"] span::before {
      top: 0;
      transform: rotate(45deg);
    }

    .menu-btn[aria-expanded="true"] span::after {
      top: 0;
      transform: rotate(-45deg);
    }

    main {
      padding: 34px 0 0;
    }

    .hero {
      padding: 42px 0 28px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
      gap: 28px;
      align-items: stretch;
    }

    .hero-copy {
      padding: clamp(28px, 5vw, 54px);
      border-radius: 34px;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(255, 250, 242, 0.84));
      border: 1px solid rgba(231, 221, 207, 0.9);
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      right: -70px;
      bottom: -70px;
      width: 180px;
      height: 180px;
      border-radius: 50%;
      background: rgba(154, 99, 60, 0.12);
      pointer-events: none;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent-strong);
      background: var(--accent-soft);
      border: 1px solid rgba(154, 99, 60, 0.16);
      padding: 6px 12px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(154, 99, 60, 0.12);
    }

    h1 {
      font-size: clamp(32px, 6vw, 58px);
      line-height: 1.12;
      letter-spacing: -0.06em;
      margin: 0 0 18px;
      color: #221d18;
    }

    .lead {
      font-size: clamp(16px, 2vw, 19px);
      color: #5a5349;
      margin: 0;
      max-width: 720px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
      position: relative;
      z-index: 1;
    }

    .btn {
      min-height: 46px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 18px;
      border-radius: 999px;
      font-weight: 750;
      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 28px rgba(154, 99, 60, 0.24);
    }

    .btn-primary:hover {
      background: var(--accent-strong);
      transform: translateY(-2px);
      box-shadow: 0 16px 36px rgba(154, 99, 60, 0.28);
    }

    .btn-ghost {
      background: rgba(255, 255, 255, 0.78);
      color: #3e362d;
      border: 1px solid var(--line);
    }

    .btn-ghost:hover {
      transform: translateY(-2px);
      background: #ffffff;
    }

    .answer-panel {
      padding: 26px;
      border-radius: 34px;
      background: #fffdf8;
      border: 1px solid rgba(231, 221, 207, 0.9);
      box-shadow: var(--shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 22px;
    }

    .answer-badge {
      width: 74px;
      height: 74px;
      border-radius: 24px;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, #e8f0df, #f5e5d5);
      color: var(--green);
      font-size: 28px;
      font-weight: 900;
    }

    .answer-panel h2 {
      margin: 0;
      font-size: clamp(22px, 3vw, 30px);
      line-height: 1.25;
      letter-spacing: -0.03em;
    }

    .answer-panel p {
      margin: 10px 0 0;
      color: var(--muted);
    }

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

    .quick-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 12px;
      border-radius: 16px;
      background: #faf2e8;
      color: #4e463d;
      font-size: 14px;
    }

    .quick-list li::before {
      content: "";
      flex: 0 0 auto;
      width: 8px;
      height: 8px;
      margin-top: 9px;
      border-radius: 50%;
      background: var(--accent);
    }

    section {
      padding: 34px 0;
    }

    .section-head {
      display: grid;
      gap: 10px;
      max-width: 760px;
      margin-bottom: 22px;
    }

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

    h2 {
      margin: 0;
      font-size: clamp(26px, 4vw, 40px);
      line-height: 1.2;
      letter-spacing: -0.04em;
      color: #24201b;
    }

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

    .note-box {
      border-radius: var(--radius);
      background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 249, 240, 0.95));
      border: 1px solid var(--line);
      box-shadow: 0 14px 36px rgba(112, 83, 52, 0.08);
      padding: clamp(20px, 4vw, 32px);
    }

    .note-box p {
      margin: 0;
      color: #51493f;
    }

    .note-box strong {
      color: #2d261f;
    }

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

    .scenario-card {
      background: var(--card);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 22px;
      box-shadow: 0 12px 30px rgba(112, 83, 52, 0.07);
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .scenario-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 18px 44px rgba(112, 83, 52, 0.12);
      border-color: rgba(154, 99, 60, 0.35);
    }

    .scenario-card .tag {
      display: inline-flex;
      padding: 5px 10px;
      border-radius: 999px;
      background: #f4eadf;
      color: var(--accent-strong);
      font-size: 12px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    h3 {
      margin: 0 0 10px;
      font-size: 18px;
      line-height: 1.35;
      color: #2a241e;
    }

    .scenario-card p,
    .step-card p,
    .faq-answer p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .steps {
      display: grid;
      grid-template-columns: 0.82fr 1.18fr;
      gap: 18px;
      align-items: start;
    }

    .steps-intro {
      position: sticky;
      top: 96px;
      background: #fffdf8;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: 0 12px 30px rgba(112, 83, 52, 0.07);
    }

    .steps-intro p {
      margin: 10px 0 0;
      color: var(--muted);
    }

    .step-list {
      display: grid;
      gap: 14px;
    }

    .step-card {
      display: grid;
      grid-template-columns: 48px minmax(0, 1fr);
      gap: 14px;
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 18px;
    }

    .step-num {
      width: 48px;
      height: 48px;
      border-radius: 17px;
      background: #f1dfcf;
      color: var(--accent-strong);
      display: grid;
      place-items: center;
      font-weight: 900;
    }

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

    .compare-card {
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: rgba(255, 255, 255, 0.92);
      box-shadow: 0 12px 30px rgba(112, 83, 52, 0.07);
    }

    .compare-card.safe {
      border-color: rgba(85, 122, 88, 0.26);
      background: linear-gradient(180deg, #ffffff, #f4f8ef);
    }

    .compare-card.careful {
      border-color: rgba(154, 99, 60, 0.28);
      background: linear-gradient(180deg, #ffffff, #fbefe3);
    }

    .compare-card ul {
      margin: 14px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .compare-card li {
      position: relative;
      padding-left: 20px;
      color: #5d554b;
      font-size: 15px;
    }

    .compare-card li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 11px;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--accent);
    }

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

    .faq-item {
      background: rgba(255, 255, 255, 0.92);
      border: 1px solid var(--line);
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 10px 28px rgba(112, 83, 52, 0.06);
    }

    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 14px;
      padding: 18px 20px;
      border: 0;
      background: transparent;
      color: #2a241e;
      font: inherit;
      font-weight: 800;
      text-align: left;
      cursor: pointer;
      min-height: 58px;
    }

    .faq-question::after {
      content: "+";
      flex: 0 0 auto;
      width: 30px;
      height: 30px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #f4eadf;
      color: var(--accent-strong);
      font-size: 20px;
      line-height: 1;
      transition: transform 0.2s ease;
    }

    .faq-question[aria-expanded="true"]::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      display: grid;
      grid-template-rows: 0fr;
      transition: grid-template-rows 0.22s ease;
    }

    .faq-answer > div {
      overflow: hidden;
    }

    .faq-item.open .faq-answer {
      grid-template-rows: 1fr;
    }

    .faq-answer p {
      padding: 0 20px 18px;
    }

    .final-box {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 18px;
      align-items: center;
      padding: clamp(22px, 4vw, 34px);
      border-radius: 30px;
      background:
        linear-gradient(135deg, #fffdf8, #f2e2d1);
      border: 1px solid rgba(154, 99, 60, 0.2);
      box-shadow: var(--shadow);
    }

    .final-box h2 {
      font-size: clamp(24px, 4vw, 36px);
    }

    .final-box p {
      margin: 10px 0 0;
      color: #62584d;
    }

    footer {
      margin-top: 28px;
      padding: 22px 0 28px;
      background: #efe6da;
      border-top: 1px solid #ddcfbe;
      color: #3c352d;
    }

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

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

    .footer-links a {
      color: #4d443a;
      padding: 6px 0;
    }

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

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

    .reveal.in-view {
      opacity: 1;
      transform: translateY(0);
    }

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

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

      .steps-intro {
        position: static;
      }

      .final-box {
        grid-template-columns: 1fr;
      }
    }

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

      .nav {
        min-height: 64px;
      }

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

      .nav-links {
        position: absolute;
        left: 12px;
        right: 12px;
        top: 72px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 10px;
        border: 1px solid var(--line);
        border-radius: 18px;
        background: rgba(255, 253, 248, 0.98);
        box-shadow: 0 18px 50px rgba(112, 83, 52, 0.16);
      }

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

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

      main {
        padding-top: 18px;
      }

      .hero {
        padding-top: 24px;
      }

      .hero-copy,
      .answer-panel {
        border-radius: 26px;
      }

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

      .step-card {
        grid-template-columns: 40px minmax(0, 1fr);
        padding: 16px;
      }

      .step-num {
        width: 40px;
        height: 40px;
        border-radius: 14px;
      }

      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .btn {
        width: 100%;
      }

      section {
        padding: 28px 0;
      }

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

    @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;
      }
    }