:root {
      --bg: #f7f7f4;
      --paper: #ffffff;
      --ink: #111111;
      --muted: #5f6368;
      --line: #deded8;
      --soft: #eeeeea;
      --black: #0c0c0c;
      --radius: 22px;
      --shadow: 0 22px 60px rgba(17, 17, 17, 0.08);
      --container: 1160px;
    }

    * {
      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(0, 0, 0, 0.055), transparent 26%),
        linear-gradient(135deg, #fbfbf8 0%, #f2f2ee 48%, #ffffff 100%);
      line-height: 1.72;
      overflow-x: hidden;
    }

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

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

    .container {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(247, 247, 244, 0.88);
      border-bottom: 1px solid rgba(17, 17, 17, 0.08);
      backdrop-filter: blur(18px);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      letter-spacing: 0.04em;
      white-space: nowrap;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #ffffff;
      background: #111111;
      font-size: 22px;
      line-height: 1;
      box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      gap: 0;
    }

    .brand-title {
      font-size: 17px;
      line-height: 1.2;
    }

    .brand-sub {
      font-size: 12px;
      color: var(--muted);
      font-weight: 500;
      letter-spacing: 0.02em;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 6px;
      margin-left: auto;
    }

    .nav-links a {
      padding: 10px 12px;
      border-radius: 999px;
      color: #2c2c2c;
      font-size: 14px;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .nav-links a:hover {
      background: #111111;
      color: #ffffff;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 10px 18px;
      border-radius: 999px;
      background: #111111;
      color: #ffffff;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 28px rgba(0, 0, 0, 0.16);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      border-radius: 50%;
      background: #ffffff;
      color: #111111;
      font-size: 22px;
      cursor: pointer;
    }

    main {
      position: relative;
    }

    section {
      scroll-margin-top: 88px;
    }

    .hero {
      padding: 72px 0 42px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
      align-items: center;
      gap: 42px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 8px 13px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.72);
      color: #303030;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.02em;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #111111;
      box-shadow: 0 0 0 5px rgba(17, 17, 17, 0.08);
    }

    h1 {
      margin: 22px 0 18px;
      font-size: clamp(34px, 6vw, 66px);
      line-height: 1.05;
      letter-spacing: -0.06em;
      max-width: 720px;
    }

    .hero-lead {
      max-width: 680px;
      margin: 0;
      color: #3f4246;
      font-size: clamp(16px, 2.1vw, 19px);
    }

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

    .btn {
      min-height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 20px;
      border-radius: 999px;
      border: 1px solid #111111;
      font-weight: 800;
      font-size: 15px;
      transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
      cursor: pointer;
    }

    .btn-primary {
      background: #111111;
      color: #ffffff;
      box-shadow: 0 18px 36px rgba(0, 0, 0, 0.16);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.78);
      color: #111111;
    }

    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 32px rgba(0, 0, 0, 0.12);
    }

    .quick-note {
      margin-top: 22px;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
      max-width: 680px;
    }

    .note-item {
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.68);
    }

    .note-item strong {
      display: block;
      font-size: 15px;
      line-height: 1.35;
    }

    .note-item span {
      display: block;
      margin-top: 4px;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.45;
    }

    .visual-card {
      position: relative;
      padding: 14px;
      border: 1px solid rgba(17, 17, 17, 0.12);
      border-radius: 32px;
      background: rgba(255, 255, 255, 0.72);
      box-shadow: var(--shadow);
      overflow: hidden;
      animation: floatIn 0.8s ease both;
    }

    .visual-card::before {
      content: "";
      position: absolute;
      inset: 18px 18px auto auto;
      width: 82px;
      height: 82px;
      border-radius: 50%;
      background: #111111;
      opacity: 0.08;
      pointer-events: none;
    }

    .phone-frame {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      background: #efefea;
      aspect-ratio: 4 / 3;
      border: 1px solid rgba(17, 17, 17, 0.08);
    }

    .phone-frame img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .status-strip {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 18px;
      align-items: center;
      margin-top: 14px;
      padding: 18px;
      border-radius: 22px;
      background: #111111;
      color: #ffffff;
    }

    .status-strip strong {
      display: block;
      font-size: 17px;
      line-height: 1.35;
    }

    .status-strip span {
      color: rgba(255, 255, 255, 0.72);
      font-size: 13px;
    }

    .status-badge {
      min-width: 92px;
      padding: 10px 12px;
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: 999px;
      text-align: center;
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    .section {
      padding: 44px 0;
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.55fr);
      align-items: end;
      gap: 30px;
      margin-bottom: 24px;
    }

    .section-kicker {
      margin: 0 0 8px;
      color: #111111;
      font-size: 13px;
      font-weight: 900;
      letter-spacing: 0.14em;
      text-transform: uppercase;
    }

    h2 {
      margin: 0;
      font-size: clamp(25px, 4vw, 42px);
      line-height: 1.18;
      letter-spacing: -0.04em;
    }

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

    .panel {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.78);
      box-shadow: 0 14px 36px rgba(0, 0, 0, 0.045);
    }

    .answer-panel {
      display: grid;
      grid-template-columns: minmax(0, 0.72fr) minmax(260px, 0.28fr);
      gap: 0;
      overflow: hidden;
    }

    .answer-main {
      padding: 30px;
      border-right: 1px solid var(--line);
    }

    .answer-main h3 {
      margin: 0 0 12px;
      font-size: 24px;
      line-height: 1.28;
    }

    .answer-main p {
      margin: 0;
      color: #42454a;
    }

    .answer-list {
      margin: 20px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .answer-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: #333333;
    }

    .answer-list li::before {
      content: "";
      flex: 0 0 9px;
      width: 9px;
      height: 9px;
      margin-top: 10px;
      border-radius: 50%;
      background: #111111;
    }

    .answer-side {
      padding: 30px;
      background: #f1f1ed;
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 14px;
    }

    .answer-side strong {
      font-size: 28px;
      line-height: 1.1;
      letter-spacing: -0.03em;
    }

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

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

    .service-card {
      min-height: 164px;
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.82);
      transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: #111111;
      box-shadow: 0 18px 40px rgba(17, 17, 17, 0.1);
    }

    .service-num {
      display: inline-flex;
      width: 34px;
      height: 34px;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      border-radius: 50%;
      background: #111111;
      color: #ffffff;
      font-size: 13px;
      font-weight: 800;
    }

    .service-card h3 {
      margin: 0 0 8px;
      font-size: 18px;
      line-height: 1.3;
    }

    .service-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.6;
    }

    .solution-wrap {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.55fr);
      gap: 18px;
      align-items: stretch;
    }

    .steps {
      padding: 28px;
    }

    .step {
      display: grid;
      grid-template-columns: 44px minmax(0, 1fr);
      gap: 14px;
      padding: 18px 0;
      border-bottom: 1px solid var(--line);
    }

    .step:first-child {
      padding-top: 0;
    }

    .step:last-child {
      padding-bottom: 0;
      border-bottom: none;
    }

    .step-index {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: #111111;
      color: #ffffff;
      font-weight: 900;
    }

    .step h3 {
      margin: 0 0 5px;
      font-size: 18px;
    }

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

    .gallery {
      display: grid;
      gap: 12px;
      padding: 12px;
      background: #111111;
      border-radius: var(--radius);
    }

    .gallery figure {
      margin: 0;
      overflow: hidden;
      border-radius: 16px;
      background: #ffffff;
    }

    .gallery figure:first-child {
      aspect-ratio: 16 / 10;
    }

    .gallery figure:not(:first-child) {
      aspect-ratio: 16 / 9;
    }

    .gallery img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: grayscale(1);
      transition: filter 0.25s ease, transform 0.25s ease;
    }

    .gallery img:hover {
      filter: grayscale(0);
      transform: scale(1.03);
    }

    .policy-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }

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

    .policy-card h3 {
      margin: 0 0 10px;
      font-size: 18px;
    }

    .policy-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
    }

    .contact-grid {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(300px, 0.55fr);
      gap: 18px;
      align-items: stretch;
    }

    .contact-card {
      padding: 28px;
    }

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

    .info-list li {
      display: grid;
      grid-template-columns: 92px minmax(0, 1fr);
      gap: 14px;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--line);
    }

    .info-list li:last-child {
      padding-bottom: 0;
      border-bottom: none;
    }

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

    .info-list strong,
    .info-list a {
      color: #111111;
      font-weight: 800;
      overflow-wrap: anywhere;
    }

    .qr-card {
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
      justify-content: space-between;
    }

    .qr-card h3 {
      margin: 0;
      font-size: 20px;
    }

    .qr-box {
      padding: 12px;
      border: 1px solid var(--line);
      border-radius: 20px;
      background: #ffffff;
    }

    .qr-box img {
      width: 100%;
      max-width: 240px;
      margin: 0 auto;
      border-radius: 14px;
    }

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

    .link-panel {
      margin-top: 18px;
      padding: 22px;
      border-radius: 22px;
      border: 1px solid var(--line);
      background: rgba(255, 255, 255, 0.68);
    }

    .link-panel h3 {
      margin: 0 0 14px;
      font-size: 18px;
    }

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

    .related-links a {
      display: inline-flex;
      align-items: center;
      min-height: 38px;
      padding: 8px 13px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: #ffffff;
      color: #222222;
      font-size: 13px;
      transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    }

    .related-links a:hover {
      background: #111111;
      color: #ffffff;
      border-color: #111111;
    }

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

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.82);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      min-height: 58px;
      padding: 16px 20px;
      border: 0;
      background: transparent;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      color: #111111;
      font: inherit;
      font-weight: 850;
      text-align: left;
      cursor: pointer;
    }

    .faq-question span {
      flex: 1;
    }

    .faq-question i {
      width: 28px;
      height: 28px;
      flex: 0 0 28px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: #111111;
      color: #ffffff;
      font-style: normal;
      transition: transform 0.2s ease;
    }

    .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);
      font-size: 15px;
    }

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

    .cta-band {
      margin: 34px 0 0;
      padding: 28px;
      border-radius: 28px;
      background: #111111;
      color: #ffffff;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: 22px;
    }

    .cta-band h2 {
      color: #ffffff;
      font-size: clamp(24px, 3.2vw, 36px);
    }

    .cta-band p {
      margin: 8px 0 0;
      color: rgba(255, 255, 255, 0.72);
    }

    .cta-band .btn {
      border-color: #ffffff;
      background: #ffffff;
      color: #111111;
      box-shadow: none;
      white-space: nowrap;
    }

    .site-footer {
      margin-top: 34px;
      background: #111111;
      color: #ffffff;
      border-top: 1px solid #111111;
    }

    .footer-inner {
      min-height: 96px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding: 24px 0;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .footer-mark {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #ffffff;
      color: #111111;
      font-weight: 900;
      font-size: 20px;
    }

    .footer-inner p {
      margin: 0;
      color: rgba(255, 255, 255, 0.72);
      font-size: 13px;
    }

    .footer-links {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 14px;
    }

    .footer-links a {
      color: #ffffff;
      font-size: 13px;
      text-decoration: none;
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity 0.6s ease, transform 0.6s 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: 980px) {
      .container {
        width: min(var(--container), calc(100% - 32px));
      }

      .menu-toggle {
        display: inline-grid;
        place-items: center;
      }

      .nav {
        min-height: 68px;
      }

      .nav-links {
        position: absolute;
        top: 68px;
        left: 16px;
        right: 16px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        border: 1px solid var(--line);
        border-radius: 20px;
        background: #ffffff;
        box-shadow: 0 22px 48px rgba(17, 17, 17, 0.12);
      }

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

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

      .nav-cta {
        display: none;
      }

      .hero {
        padding-top: 48px;
      }

      .hero-grid,
      .section-head,
      .answer-panel,
      .solution-wrap,
      .contact-grid {
        grid-template-columns: 1fr;
      }

      .answer-main {
        border-right: none;
        border-bottom: 1px solid var(--line);
      }

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

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

      .gallery figure:first-child {
        grid-column: 1 / -1;
      }

      .cta-band {
        grid-template-columns: 1fr;
      }
    }

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

      .brand-sub {
        display: none;
      }

      .hero {
        padding: 34px 0 28px;
      }

      .section {
        padding: 32px 0;
      }

      .hero-actions {
        align-items: stretch;
      }

      .btn {
        width: 100%;
      }

      .quick-note,
      .services-grid,
      .policy-grid,
      .gallery {
        grid-template-columns: 1fr;
      }

      .answer-main,
      .answer-side,
      .steps,
      .contact-card,
      .qr-card,
      .cta-band {
        padding: 22px;
      }

      .info-list li {
        grid-template-columns: 1fr;
        gap: 4px;
      }

      .status-strip {
        grid-template-columns: 1fr;
      }

      .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-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }