:root {
      --bg: #fbfaf7;
      --panel: #ffffff;
      --panel-soft: #f4efe7;
      --text: #202124;
      --muted: #62666d;
      --line: #e7dfd2;
      --accent: #8a5a2b;
      --accent-dark: #65411f;
      --accent-soft: #f3dfc5;
      --green: #57715a;
      --shadow: 0 18px 50px rgba(71, 52, 31, 0.1);
      --radius-lg: 28px;
      --radius-md: 18px;
      --container: 1120px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(243, 223, 197, 0.9), transparent 30%),
        radial-gradient(circle at 90% 18%, rgba(223, 235, 219, 0.8), transparent 28%),
        linear-gradient(180deg, #fbfaf7 0%, #f8f4ed 48%, #fbfaf7 100%);
      line-height: 1.75;
    }

    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, 247, 0.88);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(231, 223, 210, 0.75);
    }

    .nav {
      min-height: 72px;
      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: #2c241c;
      white-space: nowrap;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--accent), #c99355);
      box-shadow: 0 8px 20px rgba(138, 90, 43, 0.22);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 17px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      color: #42464d;
      font-size: 14px;
    }

    .nav-links a {
      padding: 9px 12px;
      border-radius: 999px;
      transition: background 0.2s ease, color 0.2s ease;
    }

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

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--text);
      border-radius: 999px;
      padding: 8px 12px;
      font-size: 14px;
      cursor: pointer;
    }

    main {
      overflow: hidden;
    }

    .hero {
      padding: 74px 0 46px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.72fr);
      align-items: start;
      gap: 34px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.82);
      border: 1px solid var(--line);
      color: var(--accent-dark);
      font-size: 13px;
      font-weight: 700;
      box-shadow: 0 8px 24px rgba(77, 58, 33, 0.06);
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--green);
      box-shadow: 0 0 0 5px rgba(87, 113, 90, 0.13);
    }

    h1 {
      margin: 22px 0 18px;
      font-size: clamp(34px, 6vw, 66px);
      line-height: 1.05;
      letter-spacing: -0.055em;
      color: #241f1a;
    }

    .hero-lead {
      max-width: 760px;
      color: #4f5359;
      font-size: clamp(16px, 2.2vw, 19px);
      margin: 0 0 26px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      margin: 28px 0 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 18px;
      border-radius: 999px;
      font-weight: 750;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

    .btn-primary {
      background: #2b241d;
      color: #fff;
      box-shadow: 0 12px 28px rgba(43, 36, 29, 0.18);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.8);
      color: #332b22;
      border: 1px solid var(--line);
    }

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

    .btn-primary:hover {
      box-shadow: 0 16px 34px rgba(43, 36, 29, 0.23);
    }

    .hero-card {
      position: relative;
      background: rgba(255, 255, 255, 0.82);
      border: 1px solid rgba(231, 223, 210, 0.9);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow);
      overflow: hidden;
      animation: floatIn 0.75s ease both;
    }

    .hero-card::after {
      content: "";
      position: absolute;
      right: -42px;
      top: -42px;
      width: 150px;
      height: 150px;
      border-radius: 50%;
      background: rgba(243, 223, 197, 0.7);
    }

    .card-title {
      position: relative;
      margin: 0 0 18px;
      font-size: 22px;
      line-height: 1.35;
      color: #27211c;
    }

    .check-list {
      position: relative;
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 14px;
    }

    .check-list li {
      display: grid;
      grid-template-columns: 24px 1fr;
      gap: 10px;
      color: #4d5157;
    }

    .check-list span {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: #edf4ea;
      color: var(--green);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      line-height: 1;
      margin-top: 2px;
    }

    .section {
      padding: 44px 0;
    }

    .section-head {
      max-width: 780px;
      margin-bottom: 24px;
    }

    .kicker {
      margin: 0 0 8px;
      color: var(--accent);
      font-size: 14px;
      font-weight: 800;
      letter-spacing: 0.04em;
    }

    h2 {
      margin: 0;
      font-size: clamp(26px, 4vw, 42px);
      line-height: 1.18;
      letter-spacing: -0.035em;
      color: #29231e;
    }

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

    .answer-panel {
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: clamp(24px, 4vw, 38px);
      box-shadow: 0 16px 42px rgba(71, 52, 31, 0.08);
    }

    .answer-grid {
      display: grid;
      grid-template-columns: 0.82fr 1.18fr;
      gap: 28px;
      align-items: start;
    }

    .verdict {
      border-left: 5px solid var(--green);
      background: #f5f8f2;
      border-radius: 0 var(--radius-md) var(--radius-md) 0;
      padding: 18px 20px;
    }

    .verdict strong {
      display: block;
      font-size: 20px;
      color: #2f4732;
      margin-bottom: 8px;
    }

    .verdict p,
    .answer-text p {
      margin: 0;
      color: #50545a;
    }

    .answer-text {
      display: grid;
      gap: 14px;
    }

    .cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .info-card {
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--line);
      border-radius: 24px;
      padding: 22px;
      box-shadow: 0 12px 32px rgba(71, 52, 31, 0.07);
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .info-card:hover {
      transform: translateY(-4px);
      border-color: #dac8ae;
      box-shadow: 0 18px 42px rgba(71, 52, 31, 0.11);
    }

    .info-card h3 {
      margin: 0 0 10px;
      font-size: 19px;
      color: #29231e;
    }

    .info-card p {
      margin: 0;
      color: #5b5f66;
      font-size: 15px;
    }

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

    .soft-box {
      background: var(--panel-soft);
      border: 1px solid #eadbc7;
      border-radius: var(--radius-lg);
      padding: 28px;
    }

    .soft-box h2 {
      font-size: clamp(24px, 3.5vw, 36px);
    }

    .plain-list {
      list-style: none;
      padding: 0;
      margin: 22px 0 0;
      display: grid;
      gap: 12px;
    }

    .plain-list li {
      background: rgba(255, 255, 255, 0.64);
      border: 1px solid rgba(231, 223, 210, 0.8);
      border-radius: 16px;
      padding: 14px 15px;
      color: #4d5157;
    }

    .process {
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 26px;
      display: grid;
      gap: 16px;
    }

    .step {
      display: grid;
      grid-template-columns: 42px 1fr;
      gap: 14px;
      align-items: start;
    }

    .step-num {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      background: #2b241d;
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 850;
      font-size: 14px;
    }

    .step h3 {
      margin: 0 0 4px;
      font-size: 17px;
      color: #29231e;
    }

    .step p {
      margin: 0;
      color: #5a5e65;
      font-size: 15px;
    }

    .compare {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }

    .compare-box {
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 24px;
    }

    .compare-box h3 {
      margin: 0 0 14px;
      font-size: 20px;
    }

    .compare-box ul {
      margin: 0;
      padding-left: 20px;
      color: #555960;
    }

    .compare-box li + li {
      margin-top: 9px;
    }

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

    details {
      background: rgba(255, 255, 255, 0.78);
      border: 1px solid var(--line);
      border-radius: 20px;
      padding: 18px 20px;
      box-shadow: 0 10px 26px rgba(71, 52, 31, 0.05);
    }

    summary {
      cursor: pointer;
      font-weight: 800;
      color: #29231e;
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

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

    summary::after {
      content: "+";
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: var(--accent-soft);
      color: var(--accent-dark);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex: 0 0 auto;
      font-weight: 900;
      transition: transform 0.2s ease;
    }

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

    details p {
      margin: 12px 0 0;
      color: #5a5e65;
    }

    .notice {
      background: linear-gradient(135deg, #fff 0%, #f5efe6 100%);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: clamp(24px, 4vw, 36px);
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
      box-shadow: var(--shadow);
    }

    .notice h2 {
      font-size: clamp(24px, 3.2vw, 36px);
    }

    .notice p {
      margin: 10px 0 0;
      color: #5a5e65;
      max-width: 700px;
    }

    .site-footer {
      margin-top: 18px;
      background: #2b241d;
      color: #f8efe3;
      padding: 28px 0;
    }

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

    .footer-inner a {
      color: #f8efe3;
      opacity: 0.92;
    }

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

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.58s ease, transform 0.58s ease;
    }

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

    @keyframes floatIn {
      from {
        opacity: 0;
        transform: translateY(16px) scale(0.98);
      }
      to {
        opacity: 1;
        transform: translateY(0) scale(1);
      }
    }

    @media (max-width: 860px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .nav {
        min-height: 64px;
      }

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

      .nav-links {
        position: absolute;
        left: 14px;
        right: 14px;
        top: 64px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        background: rgba(255, 255, 255, 0.96);
        border: 1px solid var(--line);
        border-radius: 18px;
        box-shadow: var(--shadow);
      }

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

      .nav-links a {
        padding: 11px 12px;
      }

      .hero {
        padding: 48px 0 34px;
      }

      .hero-grid,
      .answer-grid,
      .split,
      .notice {
        grid-template-columns: 1fr;
      }

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

      .hero-card {
        padding: 24px;
      }

      .section {
        padding: 34px 0;
      }

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

      .footer-links {
        justify-content: flex-start;
      }
    }

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

      *,
      *::before,
      *::after {
        animation: none !important;
        transition: none !important;
      }

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