:root {
      --sand: #f6efe3;
      --sand-deep: #ead8bd;
      --rock: #7a5639;
      --rock-dark: #2d241d;
      --clay: #b45f38;
      --clay-soft: #d99162;
      --moss: #59614a;
      --ink: #231f1b;
      --muted: #6f655b;
      --card: rgba(255, 252, 246, 0.88);
      --line: rgba(122, 86, 57, 0.18);
      --shadow: 0 18px 48px rgba(83, 55, 32, 0.14);
      --radius-xl: 28px;
      --radius-lg: 20px;
      --radius-md: 14px;
      --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 8% 12%, rgba(211, 146, 91, 0.28), transparent 30%),
        radial-gradient(circle at 90% 10%, rgba(122, 86, 57, 0.16), transparent 34%),
        linear-gradient(180deg, #f9f1e5 0%, #f5ead9 38%, #fbf7ef 100%);
      line-height: 1.65;
      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: 30;
      background: rgba(250, 243, 232, 0.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--line);
    }

    .nav {
      min-height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex: 0 0 auto;
      font-weight: 800;
      letter-spacing: 0.02em;
      color: var(--rock-dark);
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px 14px 20px 14px;
      display: grid;
      place-items: center;
      color: #fffaf2;
      background: linear-gradient(145deg, var(--clay), var(--rock));
      box-shadow: 0 10px 26px rgba(122, 86, 57, 0.26);
      font-size: 22px;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.15;
      font-size: 15px;
    }

    .brand-text small {
      font-size: 12px;
      color: var(--muted);
      font-weight: 600;
      margin-top: 3px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 22px;
      font-size: 14px;
      color: #473a30;
    }

    .nav-links a {
      padding: 8px 2px;
      position: relative;
      white-space: nowrap;
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 2px;
      height: 2px;
      background: var(--clay);
      transform: scaleX(0);
      transform-origin: center;
      transition: transform .22s ease;
    }

    .nav-links a:hover::after {
      transform: scaleX(1);
    }

    .nav-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 16px;
      border-radius: 999px;
      background: #2f281f;
      color: #fff7ea;
      font-weight: 700;
      box-shadow: 0 12px 24px rgba(45, 36, 29, 0.18);
      transition: transform .22s ease, box-shadow .22s ease;
      white-space: nowrap;
    }

    .nav-action:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 32px rgba(45, 36, 29, 0.24);
    }

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: rgba(255, 250, 242, 0.92);
      color: var(--rock-dark);
      border-radius: 12px;
      padding: 9px 12px;
      font-weight: 700;
      cursor: pointer;
    }

    .hero {
      position: relative;
      padding: 58px 0 34px;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 20px auto auto 50%;
      width: min(680px, 80vw);
      height: 280px;
      border-radius: 999px;
      background: linear-gradient(90deg, rgba(180, 95, 56, 0.18), rgba(217, 145, 98, 0.08));
      transform: translateX(-50%) rotate(-4deg);
      filter: blur(2px);
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1.06fr) minmax(320px, .94fr);
      gap: 34px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 8px 13px;
      border-radius: 999px;
      background: rgba(255, 251, 243, 0.78);
      border: 1px solid var(--line);
      color: var(--rock);
      font-size: 13px;
      font-weight: 700;
      box-shadow: 0 8px 22px rgba(83, 55, 32, 0.08);
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--clay);
      box-shadow: 0 0 0 5px rgba(180, 95, 56, 0.14);
    }

    h1 {
      margin: 18px 0 16px;
      font-size: clamp(34px, 6vw, 58px);
      line-height: 1.08;
      letter-spacing: -0.04em;
      color: #231b15;
    }

    .lead {
      margin: 0;
      max-width: 640px;
      color: #594b40;
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 15px;
      font-weight: 800;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
      border: 1px solid transparent;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--clay), #8e4b2e);
      color: #fffaf1;
      box-shadow: 0 16px 32px rgba(180, 95, 56, 0.25);
    }

    .btn-secondary {
      background: rgba(255, 252, 246, 0.76);
      color: var(--rock-dark);
      border-color: var(--line);
    }

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

    .btn-primary:hover {
      box-shadow: 0 20px 38px rgba(180, 95, 56, 0.32);
    }

    .trust-strip {
      margin-top: 28px;
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
      max-width: 690px;
    }

    .trust-item {
      padding: 13px 14px;
      border-radius: 16px;
      background: rgba(255, 251, 244, 0.74);
      border: 1px solid var(--line);
    }

    .trust-item strong {
      display: block;
      color: #2f251d;
      font-size: 15px;
    }

    .trust-item span {
      display: block;
      color: var(--muted);
      font-size: 13px;
      margin-top: 3px;
    }

    .hero-panel {
      background:
        linear-gradient(145deg, rgba(255,255,255,.56), rgba(255,247,235,.9)),
        linear-gradient(135deg, rgba(180,95,56,.12), transparent);
      border: 1px solid rgba(122, 86, 57, 0.2);
      border-radius: 34px;
      padding: 18px;
      box-shadow: var(--shadow);
      overflow: hidden;
      transform: translateZ(0);
    }

    .phone-collage {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .phone-shot {
      position: relative;
      overflow: hidden;
      border-radius: 22px;
      background: #eee1d0;
      border: 1px solid rgba(122, 86, 57, 0.16);
      aspect-ratio: 4 / 3;
    }

    .phone-shot.tall {
      aspect-ratio: 4 / 5;
    }

    .phone-shot img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .45s ease;
    }

    .phone-shot:hover img {
      transform: scale(1.05);
    }

    .panel-note {
      margin-top: 14px;
      padding: 14px 16px;
      border-radius: 20px;
      background: rgba(45, 36, 29, 0.92);
      color: #fff6e8;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
    }

    .panel-note strong {
      display: block;
      font-size: 15px;
    }

    .panel-note span {
      color: #e9d5bc;
      font-size: 13px;
    }

    section {
      padding: 38px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 20px;
      margin-bottom: 22px;
    }

    .section-kicker {
      color: var(--clay);
      font-weight: 800;
      font-size: 13px;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      margin-bottom: 6px;
    }

    h2 {
      margin: 0;
      color: #2b2119;
      font-size: clamp(26px, 4vw, 38px);
      line-height: 1.18;
      letter-spacing: -0.03em;
    }

    .section-desc {
      margin: 0;
      color: var(--muted);
      max-width: 430px;
      font-size: 15px;
    }

    .service-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .service-card {
      position: relative;
      min-height: 178px;
      padding: 22px;
      border-radius: var(--radius-lg);
      background: var(--card);
      border: 1px solid var(--line);
      box-shadow: 0 10px 30px rgba(83, 55, 32, 0.08);
      overflow: hidden;
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }

    .service-card::after {
      content: "";
      position: absolute;
      right: -30px;
      bottom: -42px;
      width: 110px;
      height: 110px;
      border-radius: 40%;
      background: rgba(180, 95, 56, 0.10);
      transform: rotate(18deg);
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: rgba(180, 95, 56, 0.36);
      box-shadow: 0 18px 42px rgba(83, 55, 32, 0.14);
    }

    .service-icon {
      width: 40px;
      height: 40px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: #f0dcc3;
      color: #7c4228;
      font-weight: 900;
      margin-bottom: 14px;
    }

    h3 {
      margin: 0 0 8px;
      font-size: 18px;
      line-height: 1.35;
      color: #2b2119;
    }

    .service-card p,
    .solution-card p,
    .guarantee-card p,
    .faq-answer {
      margin: 0;
      color: #65594e;
      font-size: 14px;
    }

    .solutions {
      background:
        linear-gradient(135deg, rgba(122, 86, 57, 0.08), rgba(217, 145, 98, 0.05)),
        rgba(255, 250, 242, 0.44);
      border-top: 1px solid rgba(122, 86, 57, 0.1);
      border-bottom: 1px solid rgba(122, 86, 57, 0.1);
    }

    .solution-layout {
      display: grid;
      grid-template-columns: 0.78fr 1.22fr;
      gap: 18px;
      align-items: stretch;
    }

    .diagnosis-box {
      padding: 26px;
      border-radius: var(--radius-xl);
      background: linear-gradient(160deg, #3b2d22, #7c4e32);
      color: #fff8ed;
      box-shadow: var(--shadow);
    }

    .diagnosis-box h3 {
      color: #fff8ed;
      font-size: 24px;
    }

    .diagnosis-box p {
      color: #ead8c3;
      margin: 10px 0 18px;
    }

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

    .step-list li {
      display: grid;
      grid-template-columns: 34px 1fr;
      gap: 12px;
      align-items: start;
      color: #fff4e4;
    }

    .step-list b {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      background: rgba(255, 246, 232, 0.14);
      color: #ffd9a7;
    }

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

    .solution-card {
      padding: 22px;
      border-radius: var(--radius-lg);
      background: rgba(255, 252, 246, 0.86);
      border: 1px solid var(--line);
      box-shadow: 0 10px 28px rgba(83, 55, 32, 0.08);
    }

    .solution-tag {
      display: inline-flex;
      margin-bottom: 12px;
      padding: 5px 10px;
      border-radius: 999px;
      background: rgba(180, 95, 56, 0.12);
      color: #854529;
      font-size: 12px;
      font-weight: 800;
    }

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

    .guarantee-card {
      padding: 22px;
      border-radius: 22px;
      background: rgba(255, 253, 248, 0.82);
      border: 1px solid var(--line);
      box-shadow: 0 12px 30px rgba(83, 55, 32, 0.08);
    }

    .guarantee-card strong {
      display: inline-flex;
      align-items: center;
      margin-bottom: 10px;
      color: #7c4228;
      font-size: 15px;
    }

    .policy-list {
      margin: 16px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 9px;
    }

    .policy-list li {
      position: relative;
      padding-left: 18px;
      color: #65594e;
      font-size: 14px;
    }

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

    .contact-card {
      display: grid;
      grid-template-columns: 1fr 0.86fr;
      gap: 18px;
      align-items: stretch;
      padding: 18px;
      border-radius: 34px;
      background:
        linear-gradient(135deg, rgba(255, 253, 248, 0.92), rgba(244, 225, 200, 0.74));
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    .contact-main {
      padding: 18px;
    }

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

    .contact-list li {
      display: grid;
      grid-template-columns: 86px 1fr;
      gap: 12px;
      padding: 14px 0;
      border-bottom: 1px solid rgba(122, 86, 57, 0.14);
      color: #3b3028;
    }

    .contact-list li:last-child {
      border-bottom: 0;
    }

    .contact-list b {
      color: var(--rock);
      font-size: 14px;
    }

    .contact-aside {
      border-radius: 26px;
      padding: 22px;
      background:
        radial-gradient(circle at 20% 0%, rgba(217,145,98,.35), transparent 42%),
        #3a2b20;
      color: #fff7ea;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 18px;
      min-height: 260px;
    }

    .contact-aside h3 {
      color: #fff7ea;
      font-size: 22px;
    }

    .contact-aside p {
      margin: 8px 0 0;
      color: #ead9c4;
    }

    .contact-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .contact-actions a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 11px 14px;
      border-radius: 14px;
      font-weight: 800;
      font-size: 14px;
    }

    .light-action {
      background: #fff3df;
      color: #3a2b20;
    }

    .ghost-action {
      border: 1px solid rgba(255, 243, 223, 0.3);
      color: #fff3df;
    }

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

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 253, 248, 0.82);
      box-shadow: 0 8px 22px rgba(83, 55, 32, 0.06);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      border: 0;
      background: transparent;
      color: #2b2119;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 18px 20px;
      text-align: left;
      font: inherit;
      font-weight: 800;
      cursor: pointer;
    }

    .faq-question span {
      flex: 1;
    }

    .faq-question i {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #f1dfc8;
      color: var(--rock);
      font-style: normal;
      transition: transform .22s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 20px 18px;
    }

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

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

    .links-panel {
      padding: 24px;
      border-radius: 26px;
      background: rgba(255, 252, 246, 0.76);
      border: 1px solid var(--line);
    }

    .links-panel h2 {
      font-size: 26px;
      margin-bottom: 12px;
    }

    .link-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .link-cloud a {
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(240, 220, 195, 0.76);
      color: #4b382b;
      font-size: 13px;
      border: 1px solid rgba(122, 86, 57, 0.12);
      transition: background .2s ease, transform .2s ease;
    }

    .link-cloud a:hover {
      background: #ead1b2;
      transform: translateY(-2px);
    }

    .site-footer {
      margin-top: 10px;
      padding: 28px 0;
      background: #2f281f;
      color: #f8ebd8;
    }

    .footer-inner {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 18px;
      align-items: center;
    }

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

    .footer-mark {
      width: 38px;
      height: 38px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: #fff1dc;
      color: #7b432a;
      font-weight: 900;
      font-size: 20px;
    }

    .footer-inner p {
      margin: 3px 0 0;
      color: #d8c7b4;
      font-size: 13px;
    }

    .footer-links {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
      justify-content: flex-end;
      font-size: 13px;
    }

    .footer-links a {
      color: #f8ebd8;
    }

    .reveal {
      opacity: 0;
      transform: translateY(22px);
      transition: opacity .58s ease, transform .58s ease;
    }

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

    @media (prefers-reduced-motion: reduce) {
      * {
        scroll-behavior: auto !important;
        transition: none !important;
        animation: none !important;
      }
      .reveal {
        opacity: 1;
        transform: none;
      }
    }

    @media (max-width: 980px) {
      .menu-toggle {
        display: inline-flex;
      }

      .nav {
        flex-wrap: wrap;
        padding: 12px 0;
      }

      .nav-links {
        width: 100%;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 12px 0 4px;
      }

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

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

      .hero-grid,
      .solution-layout,
      .contact-card {
        grid-template-columns: 1fr;
      }

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

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

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

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

      .hero {
        padding-top: 34px;
      }

      .trust-strip,
      .service-grid,
      .solution-grid {
        grid-template-columns: 1fr;
      }

      .phone-collage {
        grid-template-columns: 1fr;
      }

      .panel-note {
        align-items: flex-start;
        flex-direction: column;
      }

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

      .footer-inner {
        grid-template-columns: 1fr;
      }

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

      section {
        padding: 30px 0;
      }
    }