:root {
      --bg: #fff8ef;
      --bg-soft: #fff1df;
      --card: #ffffff;
      --ink: #2c261f;
      --muted: #6f6257;
      --orange: #ff8a3d;
      --orange-dark: #d95f19;
      --peach: #ffd5b3;
      --mint: #bfe8d4;
      --yellow: #ffe49a;
      --line: rgba(155, 102, 52, 0.18);
      --shadow: 0 18px 48px rgba(157, 92, 35, 0.13);
      --radius-xl: 28px;
      --radius-lg: 20px;
      --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(--ink);
      background:
        radial-gradient(circle at 12% 8%, rgba(255, 213, 179, 0.75), transparent 28%),
        radial-gradient(circle at 88% 18%, rgba(191, 232, 212, 0.62), transparent 24%),
        linear-gradient(180deg, #fff9f0 0%, #fff6eb 48%, #fffaf3 100%);
      line-height: 1.75;
      overflow-x: hidden;
    }

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

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 248, 239, 0.88);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--line);
    }

    .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: 0.04em;
      color: #35271d;
    }

    .logo {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: linear-gradient(135deg, #ff9a4f, #ff6f2c);
      box-shadow: 0 10px 22px rgba(255, 111, 44, 0.28);
      font-size: 24px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 20px;
      font-size: 15px;
      color: #51443a;
    }

    .nav-links a {
      padding: 8px 2px;
      border-bottom: 2px solid transparent;
      transition: color 0.2s ease, border-color 0.2s ease;
    }

    .nav-links a:hover {
      color: var(--orange-dark);
      border-color: var(--orange);
    }

    .nav-call {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 8px 16px;
      color: #ffffff;
      background: #2f261f;
      border-radius: 999px;
      font-weight: 700;
      box-shadow: 0 12px 26px rgba(47, 38, 31, 0.18);
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 0;
      border-radius: 14px;
      background: #fff0dc;
      color: #3a2b20;
      font-size: 22px;
      cursor: pointer;
    }

    main {
      padding: 26px 0 0;
    }

    .hero {
      padding: 44px 0 26px;
    }

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

    .hero-copy {
      position: relative;
      padding: 34px;
      border: 1px solid rgba(255, 138, 61, 0.26);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 241, 223, 0.78)),
        linear-gradient(135deg, rgba(255, 228, 154, 0.36), rgba(191, 232, 212, 0.24));
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      right: -60px;
      bottom: -70px;
      width: 190px;
      height: 190px;
      border-radius: 50%;
      background: rgba(255, 138, 61, 0.15);
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 16px;
      padding: 7px 12px;
      border-radius: 999px;
      background: #fff3df;
      color: #8c4b16;
      font-size: 14px;
      font-weight: 700;
      border: 1px solid rgba(255, 138, 61, 0.24);
    }

    h1 {
      position: relative;
      margin: 0 0 16px;
      font-size: clamp(32px, 6vw, 56px);
      line-height: 1.08;
      letter-spacing: -0.04em;
      color: #261d17;
      z-index: 1;
    }

    .lead {
      position: relative;
      margin: 0;
      color: #5d5047;
      font-size: clamp(16px, 2.5vw, 19px);
      z-index: 1;
    }

    .hero-actions {
      position: relative;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
      z-index: 1;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 11px 18px;
      border-radius: 999px;
      font-weight: 800;
      transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    }

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

    .btn-primary {
      color: #ffffff;
      background: linear-gradient(135deg, #ff9d45, #ff6d2d);
      box-shadow: 0 15px 30px rgba(255, 111, 44, 0.28);
    }

    .btn-ghost {
      color: #3b2c21;
      background: #ffffff;
      border: 1px solid rgba(255, 138, 61, 0.28);
    }

    .hero-panel {
      display: grid;
      gap: 16px;
      align-content: start;
    }

    .phone-frame {
      padding: 14px;
      border-radius: var(--radius-xl);
      background: linear-gradient(145deg, #ffffff, #ffe9d0);
      box-shadow: var(--shadow);
      border: 1px solid rgba(255, 138, 61, 0.2);
    }

    .phone-frame img {
      width: 100%;
      border-radius: 22px;
      aspect-ratio: 4 / 3;
      object-fit: contain;
      background: #fffaf3;
    }

    .quick-card {
      padding: 20px;
      border-radius: 22px;
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 12px 28px rgba(157, 92, 35, 0.09);
    }

    .quick-card strong {
      display: block;
      margin-bottom: 8px;
      font-size: 18px;
      color: #2c211a;
    }

    .quick-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .section {
      padding: 38px 0;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 18px;
      margin-bottom: 20px;
    }

    .section-title {
      margin: 0;
      font-size: clamp(24px, 4vw, 36px);
      line-height: 1.22;
      color: #2b211a;
      letter-spacing: -0.02em;
    }

    .section-note {
      max-width: 520px;
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .toc {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
    }

    .toc a {
      padding: 15px 16px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.86);
      border: 1px solid var(--line);
      color: #57483d;
      font-weight: 700;
      box-shadow: 0 10px 22px rgba(157, 92, 35, 0.06);
      transition: transform 0.18s ease, border-color 0.18s ease;
    }

    .toc a:hover {
      transform: translateY(-3px);
      border-color: rgba(255, 138, 61, 0.55);
    }

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

    .card {
      padding: 22px;
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid var(--line);
      box-shadow: 0 14px 34px rgba(157, 92, 35, 0.08);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 42px rgba(157, 92, 35, 0.14);
    }

    .card h3 {
      margin: 0 0 10px;
      font-size: 19px;
      color: #30241c;
    }

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

    .badge {
      display: inline-flex;
      margin-bottom: 12px;
      padding: 5px 10px;
      border-radius: 999px;
      background: #fff1db;
      color: #9c4e13;
      font-size: 13px;
      font-weight: 800;
    }

    .solution-wrap {
      display: grid;
      grid-template-columns: 0.95fr 1.05fr;
      gap: 18px;
      align-items: start;
    }

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

    .steps li {
      display: grid;
      grid-template-columns: 44px 1fr;
      gap: 12px;
      padding: 18px;
      border-radius: 20px;
      background: #ffffff;
      border: 1px solid var(--line);
      box-shadow: 0 12px 26px rgba(157, 92, 35, 0.07);
    }

    .step-num {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      background: #fff0d6;
      color: #a45013;
      font-weight: 900;
    }

    .steps h3 {
      margin: 0 0 4px;
      font-size: 18px;
      color: #30241c;
    }

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

    .notice {
      padding: 24px;
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(255, 228, 154, 0.56), rgba(255, 255, 255, 0.92)),
        #ffffff;
      border: 1px solid rgba(255, 184, 77, 0.28);
      box-shadow: var(--shadow);
    }

    .notice h3 {
      margin: 0 0 12px;
      font-size: 22px;
      color: #2c211a;
    }

    .notice ul {
      margin: 0;
      padding-left: 20px;
      color: #5e5046;
    }

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

    .warranty-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .policy {
      padding: 18px;
      border-radius: 18px;
      background: #ffffff;
      border: 1px solid var(--line);
    }

    .policy strong {
      display: block;
      margin-bottom: 6px;
      color: #30241c;
    }

    .policy span {
      color: var(--muted);
      font-size: 14px;
    }

    .contact-box {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 280px;
      gap: 18px;
      align-items: stretch;
      padding: 22px;
      border-radius: var(--radius-xl);
      background: linear-gradient(135deg, #ffffff, #fff0da);
      border: 1px solid rgba(255, 138, 61, 0.24);
      box-shadow: var(--shadow);
    }

    .contact-list {
      display: grid;
      gap: 10px;
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
    }

    .contact-list li {
      padding: 12px 14px;
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.76);
      color: #4e4035;
      border: 1px solid rgba(155, 102, 52, 0.12);
    }

    .qr-card {
      display: grid;
      gap: 10px;
      justify-items: center;
      align-content: center;
      padding: 16px;
      border-radius: 22px;
      background: #ffffff;
      border: 1px solid var(--line);
      text-align: center;
    }

    .qr-card img {
      width: 188px;
      border-radius: 18px;
      border: 1px solid rgba(155, 102, 52, 0.14);
      background: #fffaf3;
    }

    .qr-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

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

    .faq-item {
      border-radius: 20px;
      background: #ffffff;
      border: 1px solid var(--line);
      overflow: hidden;
      box-shadow: 0 10px 22px rgba(157, 92, 35, 0.06);
    }

    .faq-btn {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 18px 20px;
      border: 0;
      background: transparent;
      color: #2c211a;
      text-align: left;
      font: inherit;
      font-weight: 800;
      cursor: pointer;
    }

    .faq-btn span {
      flex: 1;
    }

    .faq-icon {
      width: 26px;
      height: 26px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: #fff0dc;
      color: #a44f13;
      flex: 0 0 auto;
      transition: transform 0.2s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 20px 18px;
      color: var(--muted);
      font-size: 15px;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

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

    .related {
      padding: 22px;
      border-radius: var(--radius-xl);
      background: rgba(255, 255, 255, 0.82);
      border: 1px solid var(--line);
    }

    .related-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 14px;
    }

    .related-links a {
      padding: 9px 13px;
      border-radius: 999px;
      background: #fff1dc;
      color: #744015;
      font-size: 14px;
      font-weight: 700;
      border: 1px solid rgba(255, 138, 61, 0.22);
    }

    .site-footer {
      margin-top: 34px;
      background: #35281f;
      color: #fff6eb;
    }

    .footer-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 24px 0;
    }

    .footer-inner p {
      margin: 0;
      color: #f3dfcc;
      font-size: 14px;
    }

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

    .footer-links a {
      color: #fff3e1;
      font-size: 14px;
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      animation: reveal 0.7s ease forwards;
    }

    .delay-1 {
      animation-delay: 0.12s;
    }

    .delay-2 {
      animation-delay: 0.22s;
    }

    @keyframes reveal {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @media (max-width: 920px) {
      .menu-toggle {
        display: inline-grid;
        place-items: center;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 72px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 14px;
        border-radius: 20px;
        background: #ffffff;
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
      }

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

      .nav-links a,
      .nav-call {
        width: 100%;
        justify-content: center;
        text-align: center;
      }

      .hero-grid,
      .solution-wrap,
      .contact-box {
        grid-template-columns: 1fr;
      }

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

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

      .section-head {
        align-items: flex-start;
        flex-direction: column;
      }
    }

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

      .nav {
        min-height: 66px;
      }

      .nav-links {
        top: 66px;
        left: 12px;
        right: 12px;
      }

      main {
        padding-top: 12px;
      }

      .hero {
        padding: 28px 0 20px;
      }

      .hero-copy {
        padding: 24px 20px;
      }

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

      .btn {
        width: 100%;
      }

      .section {
        padding: 28px 0;
      }

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

      .steps li {
        grid-template-columns: 38px 1fr;
        padding: 16px;
      }

      .step-num {
        width: 38px;
        height: 38px;
      }

      .contact-box {
        padding: 16px;
      }

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