:root {
      --bg: #f7f4ee;
      --paper: #fffaf2;
      --card: #ffffff;
      --ink: #202124;
      --muted: #68635b;
      --line: #e7dccb;
      --accent: #9a5b2f;
      --accent-2: #1f6f65;
      --accent-soft: #f1dfc8;
      --shadow: 0 18px 48px rgba(74, 53, 32, 0.11);
      --radius-xl: 28px;
      --radius-lg: 20px;
      --radius-md: 14px;
      --container: 1120px;
      --pad: clamp(18px, 4vw, 34px);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-width: 320px;
      background:
        radial-gradient(circle at 12% 10%, rgba(154, 91, 47, 0.12), transparent 28%),
        radial-gradient(circle at 86% 18%, rgba(31, 111, 101, 0.11), transparent 30%),
        linear-gradient(180deg, #fbf7f0 0%, var(--bg) 46%, #f4efe7 100%);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.72;
      overflow-x: hidden;
    }

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

    .site-shell {
      width: min(100%, var(--container));
      margin: 0 auto;
      padding-left: var(--pad);
      padding-right: var(--pad);
    }

    .skip-link {
      position: absolute;
      left: 16px;
      top: -60px;
      z-index: 99;
      padding: 10px 14px;
      border-radius: 999px;
      background: var(--ink);
      color: #fff;
      transition: top 0.2s ease;
    }

    .skip-link:focus {
      top: 14px;
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 20;
      border-bottom: 1px solid rgba(231, 220, 203, 0.85);
      background: rgba(251, 247, 240, 0.88);
      backdrop-filter: blur(16px);
    }

    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      min-height: 72px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: #24211d;
      white-space: nowrap;
    }

    .brand-mark {
      display: grid;
      place-items: center;
      width: 38px;
      height: 38px;
      border-radius: 13px;
      background: linear-gradient(135deg, #9a5b2f, #d79b64);
      color: #fff;
      box-shadow: 0 10px 24px rgba(154, 91, 47, 0.24);
      font-size: 18px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 8px;
      color: #3e3a35;
      font-size: 14px;
    }

    .nav-links a {
      padding: 10px 12px;
      border-radius: 999px;
      transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    }

    .nav-links a:hover {
      background: #efe4d6;
      color: #111;
      transform: translateY(-1px);
    }

    .menu-toggle {
      display: none;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: #fffaf2;
      color: var(--ink);
      cursor: pointer;
    }

    .menu-toggle span {
      position: relative;
      width: 18px;
      height: 2px;
      border-radius: 99px;
      background: currentColor;
    }

    .menu-toggle span::before,
    .menu-toggle span::after {
      content: "";
      position: absolute;
      left: 0;
      width: 18px;
      height: 2px;
      border-radius: 99px;
      background: currentColor;
      transition: transform 0.2s ease, top 0.2s ease;
    }

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

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

    .menu-toggle.is-open span {
      background: transparent;
    }

    .menu-toggle.is-open span::before {
      top: 0;
      transform: rotate(45deg);
    }

    .menu-toggle.is-open span::after {
      top: 0;
      transform: rotate(-45deg);
    }

    main {
      display: block;
    }

    .hero {
      padding: clamp(42px, 8vw, 86px) 0 clamp(30px, 5vw, 58px);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.75fr);
      gap: clamp(22px, 4vw, 46px);
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin: 0 0 18px;
      padding: 7px 12px;
      border: 1px solid rgba(154, 91, 47, 0.22);
      border-radius: 999px;
      background: rgba(255, 250, 242, 0.72);
      color: #6f4428;
      font-size: 13px;
      font-weight: 700;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-2);
      box-shadow: 0 0 0 6px rgba(31, 111, 101, 0.11);
    }

    h1 {
      margin: 0;
      max-width: 760px;
      font-size: clamp(34px, 7vw, 68px);
      line-height: 1.05;
      letter-spacing: -0.055em;
      color: #211d19;
    }

    .hero-lead {
      margin: 22px 0 0;
      max-width: 720px;
      color: #514b43;
      font-size: clamp(16px, 2.3vw, 20px);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 13px 18px;
      border-radius: 999px;
      font-weight: 800;
      transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    }

    .btn-primary {
      background: #1f6f65;
      color: #fff;
      box-shadow: 0 12px 28px rgba(31, 111, 101, 0.2);
    }

    .btn-secondary {
      border: 1px solid var(--line);
      background: rgba(255, 250, 242, 0.88);
      color: #2f2a25;
    }

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

    .btn-primary:hover {
      box-shadow: 0 16px 34px rgba(31, 111, 101, 0.27);
    }

    .answer-card {
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(231, 220, 203, 0.9);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(145deg, rgba(255, 250, 242, 0.96), rgba(255, 255, 255, 0.92)),
        var(--card);
      box-shadow: var(--shadow);
      padding: clamp(22px, 4vw, 34px);
    }

    .answer-card::after {
      content: "";
      position: absolute;
      right: -42px;
      top: -42px;
      width: 150px;
      height: 150px;
      border-radius: 999px;
      background: rgba(154, 91, 47, 0.1);
      pointer-events: none;
    }

    .answer-label {
      margin: 0 0 12px;
      color: var(--accent);
      font-size: 14px;
      font-weight: 800;
    }

    .answer-card h2 {
      margin: 0;
      font-size: clamp(22px, 3vw, 30px);
      line-height: 1.25;
      letter-spacing: -0.02em;
    }

    .answer-card p {
      margin: 14px 0 0;
      color: #5c554c;
    }

    .mini-list {
      display: grid;
      gap: 10px;
      margin: 22px 0 0;
      padding: 0;
      list-style: none;
    }

    .mini-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 12px;
      border-radius: 16px;
      background: #f6efe5;
      color: #39342e;
    }

    .mini-list li::before {
      content: "✓";
      display: inline-grid;
      place-items: center;
      flex: 0 0 22px;
      width: 22px;
      height: 22px;
      margin-top: 2px;
      border-radius: 50%;
      background: #dcebe7;
      color: #176057;
      font-size: 13px;
      font-weight: 900;
    }

    .section {
      padding: clamp(28px, 6vw, 62px) 0;
    }

    .section-head {
      display: grid;
      gap: 10px;
      max-width: 760px;
      margin-bottom: clamp(18px, 4vw, 30px);
    }

    .section-kicker {
      margin: 0;
      color: var(--accent);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: 0.12em;
    }

    h2 {
      margin: 0;
      color: #27231f;
      font-size: clamp(26px, 4vw, 42px);
      line-height: 1.18;
      letter-spacing: -0.035em;
    }

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

    .split-panel {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
      gap: clamp(18px, 3vw, 28px);
      align-items: start;
    }

    .plain-panel {
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      background: rgba(255, 250, 242, 0.86);
      padding: clamp(20px, 3vw, 30px);
    }

    .plain-panel h3,
    .info-card h3,
    .step h3,
    .notice-box h3,
    .faq-item h3 {
      margin: 0;
      color: #27231f;
      font-size: 19px;
      line-height: 1.35;
    }

    .plain-panel p,
    .info-card p,
    .step p,
    .notice-box p,
    .faq-item p {
      margin: 10px 0 0;
      color: #5b554d;
    }

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

    .soft-list li {
      padding-left: 18px;
      position: relative;
      color: #464039;
    }

    .soft-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0.72em;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--accent-2);
    }

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

    .info-card {
      border: 1px solid rgba(231, 220, 203, 0.92);
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, 0.78);
      padding: 20px;
      box-shadow: 0 10px 26px rgba(74, 53, 32, 0.06);
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    }

    .info-card:hover {
      transform: translateY(-4px);
      border-color: rgba(154, 91, 47, 0.35);
      box-shadow: 0 18px 42px rgba(74, 53, 32, 0.12);
    }

    .icon-dot {
      display: inline-grid;
      place-items: center;
      width: 40px;
      height: 40px;
      margin-bottom: 14px;
      border-radius: 14px;
      background: #f0e2d0;
      color: #7c492c;
      font-weight: 900;
    }

    .check-area {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(280px, 0.62fr);
      gap: clamp(18px, 4vw, 28px);
      align-items: start;
    }

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

    .checklist li {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 12px;
      align-items: start;
      padding: 16px;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.72);
    }

    .check-num {
      display: inline-grid;
      place-items: center;
      width: 30px;
      height: 30px;
      border-radius: 12px;
      background: #1f6f65;
      color: #fff;
      font-size: 14px;
      font-weight: 900;
    }

    .checklist strong {
      display: block;
      color: #27231f;
      line-height: 1.35;
    }

    .checklist span {
      display: block;
      margin-top: 4px;
      color: #655f57;
      font-size: 14px;
    }

    .notice-box {
      position: sticky;
      top: 92px;
      border: 1px solid rgba(31, 111, 101, 0.2);
      border-radius: var(--radius-xl);
      background: #eef7f4;
      padding: clamp(20px, 3vw, 28px);
    }

    .notice-box .tag {
      display: inline-flex;
      margin-bottom: 14px;
      padding: 6px 10px;
      border-radius: 999px;
      background: #d8ebe6;
      color: #176057;
      font-size: 13px;
      font-weight: 800;
    }

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

    .step {
      position: relative;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: rgba(255, 250, 242, 0.86);
      padding: 20px;
    }

    .step-index {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 42px;
      height: 32px;
      margin-bottom: 14px;
      border-radius: 999px;
      background: #f1dfc8;
      color: #7b4728;
      font-weight: 900;
    }

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

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.76);
      overflow: hidden;
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      width: 100%;
      min-height: 58px;
      padding: 16px 18px;
      border: 0;
      background: transparent;
      color: #27231f;
      cursor: pointer;
      text-align: left;
      font: inherit;
      font-weight: 800;
    }

    .faq-question::after {
      content: "+";
      display: inline-grid;
      place-items: center;
      flex: 0 0 28px;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: #f1dfc8;
      color: #7b4728;
      font-weight: 900;
      transition: transform 0.2s ease;
    }

    .faq-item.is-open .faq-question::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      display: grid;
      grid-template-rows: 0fr;
      transition: grid-template-rows 0.24s ease;
    }

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

    .faq-answer-inner {
      overflow: hidden;
    }

    .faq-answer-inner p {
      margin: 0;
      padding: 0 18px 18px;
      color: #5b554d;
    }

    .closing {
      padding-bottom: clamp(38px, 6vw, 64px);
    }

    .closing-card {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 20px;
      align-items: center;
      border: 1px solid rgba(154, 91, 47, 0.2);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(241, 223, 200, 0.92), rgba(238, 247, 244, 0.88)),
        var(--paper);
      padding: clamp(22px, 4vw, 34px);
    }

    .closing-card h2 {
      font-size: clamp(24px, 3.4vw, 36px);
    }

    .closing-card p {
      margin: 10px 0 0;
      color: #514b43;
    }

    footer {
      border-top: 1px solid var(--line);
      background: #fbf7f0;
      color: #2d2924;
    }

    .footer-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding-top: 22px;
      padding-bottom: 22px;
      font-size: 14px;
    }

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

    .footer-links a {
      color: #514b43;
      padding: 6px 0;
    }

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

    .back-top {
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 18;
      display: inline-grid;
      place-items: center;
      width: 46px;
      height: 46px;
      border: 1px solid var(--line);
      border-radius: 50%;
      background: rgba(255, 250, 242, 0.95);
      color: #312b25;
      box-shadow: 0 10px 24px rgba(74, 53, 32, 0.14);
      opacity: 0;
      pointer-events: none;
      transform: translateY(8px);
      transition: opacity 0.2s ease, transform 0.2s ease;
      cursor: pointer;
    }

    .back-top.is-visible {
      opacity: 1;
      pointer-events: auto;
      transform: translateY(0);
    }

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

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

    @media (max-width: 900px) {
      .menu-toggle {
        display: inline-flex;
      }

      .nav {
        min-height: 66px;
      }

      .nav-links {
        position: absolute;
        left: var(--pad);
        right: var(--pad);
        top: 72px;
        display: grid;
        gap: 4px;
        padding: 10px;
        border: 1px solid var(--line);
        border-radius: 18px;
        background: #fffaf2;
        box-shadow: var(--shadow);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-8px);
        transition: opacity 0.2s ease, transform 0.2s ease;
      }

      .nav-links.is-open {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
      }

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

      .hero-grid,
      .split-panel,
      .check-area,
      .closing-card {
        grid-template-columns: 1fr;
      }

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

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

      .notice-box {
        position: static;
      }

      .closing-card .btn {
        width: fit-content;
      }
    }

    @media (max-width: 560px) {
      .brand span:last-child {
        max-width: 210px;
        overflow: hidden;
        text-overflow: ellipsis;
      }

      .hero-actions,
      .closing-card .btn {
        width: 100%;
      }

      .btn {
        width: 100%;
      }

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

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

      .footer-links {
        gap: 10px 14px;
      }
    }

    @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;
      }
    }