:root {
      --bg: #11100e;
      --bg-2: #181410;
      --panel: rgba(255, 250, 239, 0.94);
      --panel-soft: rgba(255, 247, 229, 0.86);
      --ink: #22190f;
      --muted: #6f6255;
      --gold: #c99a43;
      --gold-deep: #8a6224;
      --red: #8e2d22;
      --line: rgba(201, 154, 67, 0.28);
      --white: #fff9ed;
      --shadow: 0 22px 60px rgba(0, 0, 0, 0.26);
      --radius: 24px;
      --container: 1180px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "Noto Serif SC", "Songti SC", "Microsoft YaHei", Arial, sans-serif;
      color: var(--ink);
      background:
        radial-gradient(circle at 12% 4%, rgba(201, 154, 67, 0.18), transparent 30%),
        radial-gradient(circle at 88% 16%, rgba(142, 45, 34, 0.18), transparent 34%),
        linear-gradient(180deg, #0f0e0d 0%, #17130f 46%, #21180f 100%);
      line-height: 1.7;
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      opacity: 0.16;
      background-image:
        linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
      background-size: 34px 34px;
      mask-image: linear-gradient(180deg, #000, transparent 88%);
      z-index: 0;
    }

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

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

    .container {
      width: min(100% - 32px, var(--container));
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(17, 16, 14, 0.86);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(201, 154, 67, 0.22);
    }

    .nav {
      min-height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: var(--white);
      font-weight: 800;
      letter-spacing: 0.08em;
      white-space: nowrap;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: #21170c;
      background: linear-gradient(135deg, #f1d38a, #ba812b);
      box-shadow: 0 12px 28px rgba(201, 154, 67, 0.25);
      font-size: 22px;
      line-height: 1;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .nav-links a {
      color: rgba(255, 249, 237, 0.86);
      padding: 9px 13px;
      border-radius: 999px;
      font-size: 14px;
      transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
    }

    .nav-links a:hover {
      color: #fff;
      background: rgba(201, 154, 67, 0.18);
      transform: translateY(-1px);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 8px 16px;
      color: #20160b;
      background: linear-gradient(135deg, #f4d990, #bd8735);
      border-radius: 999px;
      font-weight: 700;
      box-shadow: 0 12px 26px rgba(201, 154, 67, 0.22);
      white-space: nowrap;
    }

    .menu-btn {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid rgba(201, 154, 67, 0.35);
      border-radius: 14px;
      color: var(--white);
      background: rgba(255, 255, 255, 0.06);
      cursor: pointer;
    }

    .hero {
      padding: 64px 0 34px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
      gap: 30px;
      align-items: center;
    }

    .hero-copy {
      color: var(--white);
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      color: #f4d990;
      background: rgba(201, 154, 67, 0.12);
      border: 1px solid rgba(201, 154, 67, 0.28);
      border-radius: 999px;
      padding: 7px 12px;
      font-size: 13px;
      margin-bottom: 18px;
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: #d9b25a;
      box-shadow: 0 0 16px rgba(217, 178, 90, 0.7);
    }

    h1 {
      margin: 0;
      max-width: 720px;
      font-size: clamp(34px, 6vw, 62px);
      line-height: 1.12;
      letter-spacing: 0.04em;
      color: #fff7e4;
    }

    .hero-copy p {
      max-width: 680px;
      margin: 20px 0 0;
      color: rgba(255, 249, 237, 0.82);
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 28px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 11px 18px;
      border-radius: 999px;
      font-weight: 800;
      transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
    }

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

    .btn-primary {
      color: #21160a;
      background: linear-gradient(135deg, #f8dfa0, #c18932);
      box-shadow: 0 18px 36px rgba(201, 154, 67, 0.26);
    }

    .btn-secondary {
      color: #fff7e4;
      border: 1px solid rgba(255, 249, 237, 0.26);
      background: rgba(255, 255, 255, 0.07);
    }

    .hero-notes {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-top: 26px;
      max-width: 660px;
    }

    .note {
      padding: 12px 13px;
      border-radius: 16px;
      color: rgba(255, 249, 237, 0.86);
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid rgba(201, 154, 67, 0.18);
      font-size: 13px;
    }

    .hero-visual {
      position: relative;
      padding: 16px;
      border-radius: 32px;
      background:
        linear-gradient(135deg, rgba(255,255,255,0.12), rgba(255,255,255,0.02)),
        radial-gradient(circle at 20% 18%, rgba(201, 154, 67, 0.26), transparent 34%);
      border: 1px solid rgba(201, 154, 67, 0.28);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .hero-visual::after {
      content: "折叠屏检测";
      position: absolute;
      right: 18px;
      top: 18px;
      color: rgba(255, 249, 237, 0.84);
      border: 1px solid rgba(201, 154, 67, 0.34);
      background: rgba(20, 17, 13, 0.54);
      border-radius: 999px;
      padding: 7px 12px;
      font-size: 13px;
      backdrop-filter: blur(10px);
    }

    .phone-frame {
      border-radius: 24px;
      overflow: hidden;
      background: #f6efe2;
      aspect-ratio: 4 / 3;
    }

    .phone-frame img {
      width: 100%;
      height: 100%;
      object-fit: contain;
      background: linear-gradient(135deg, #fff8ea, #e7d6b7);
    }

    .hero-card {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 16px;
      align-items: center;
      margin-top: 14px;
      padding: 15px;
      border-radius: 22px;
      background: rgba(255, 249, 237, 0.92);
    }

    .hero-card strong {
      display: block;
      color: #21160a;
    }

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

    .seal {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff7e4;
      background: radial-gradient(circle, #ad3a2a, #762016);
      border: 2px solid rgba(244, 217, 144, 0.75);
      font-weight: 800;
    }

    section {
      padding: 34px 0;
    }

    .section-shell {
      padding: clamp(22px, 4vw, 34px);
      border-radius: 32px;
      background:
        linear-gradient(135deg, rgba(255, 249, 237, 0.96), rgba(246, 231, 202, 0.92)),
        radial-gradient(circle at 90% 10%, rgba(201, 154, 67, 0.14), transparent 35%);
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.18);
      border: 1px solid rgba(201, 154, 67, 0.22);
    }

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

    .section-kicker {
      margin: 0 0 6px;
      color: var(--gold-deep);
      font-weight: 800;
      letter-spacing: 0.08em;
      font-size: 13px;
    }

    h2 {
      margin: 0;
      font-size: clamp(25px, 4vw, 38px);
      line-height: 1.25;
      color: #21160a;
    }

    .section-head p {
      max-width: 500px;
      margin: 0;
      color: var(--muted);
    }

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

    .service-card {
      padding: 20px;
      min-height: 178px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.68);
      border: 1px solid rgba(138, 98, 36, 0.16);
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 18px 34px rgba(98, 62, 18, 0.14);
      border-color: rgba(201, 154, 67, 0.42);
    }

    .icon {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: #fff7e4;
      background: linear-gradient(135deg, #2d241b, #8e2d22);
      margin-bottom: 12px;
      font-weight: 800;
    }

    h3 {
      margin: 0 0 8px;
      font-size: 18px;
      line-height: 1.35;
      color: #21160a;
    }

    .service-card p,
    .solution-text p,
    .guarantee-card p,
    .contact-card p,
    .faq-panel p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .solution-layout {
      display: grid;
      grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
      gap: 20px;
      align-items: start;
    }

    .image-stack {
      display: grid;
      gap: 14px;
    }

    .image-box {
      overflow: hidden;
      border-radius: 24px;
      border: 1px solid rgba(138, 98, 36, 0.18);
      background: #fff6e7;
      aspect-ratio: 16 / 11;
    }

    .image-box img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

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

    .process-item {
      display: grid;
      grid-template-columns: 42px 1fr;
      gap: 14px;
      padding: 16px;
      border-radius: 20px;
      background: rgba(255, 255, 255, 0.62);
      border: 1px solid rgba(138, 98, 36, 0.14);
    }

    .step {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #21160a;
      background: linear-gradient(135deg, #f4d990, #c99a43);
      font-weight: 900;
    }

    .process-item strong {
      display: block;
      margin-bottom: 4px;
      color: #21160a;
      font-size: 16px;
    }

    .process-item span {
      color: var(--muted);
      font-size: 15px;
    }

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

    .guarantee-card {
      padding: 20px;
      border-radius: 24px;
      background: linear-gradient(180deg, rgba(255,255,255,0.74), rgba(255,247,229,0.8));
      border: 1px solid rgba(138, 98, 36, 0.16);
    }

    .guarantee-card ul {
      padding: 0;
      margin: 12px 0 0;
      list-style: none;
      display: grid;
      gap: 8px;
    }

    .guarantee-card li {
      color: #44372a;
      font-size: 14px;
      padding-left: 17px;
      position: relative;
    }

    .guarantee-card li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0.72em;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--red);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 320px;
      gap: 18px;
      align-items: stretch;
    }

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

    .contact-card {
      padding: 18px;
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.68);
      border: 1px solid rgba(138, 98, 36, 0.16);
    }

    .contact-card strong {
      display: block;
      margin-bottom: 4px;
      color: #21160a;
    }

    .contact-card a {
      color: #7a271d;
      font-weight: 800;
    }

    .qr-card {
      padding: 18px;
      border-radius: 24px;
      background: #1b1712;
      color: var(--white);
      border: 1px solid rgba(201, 154, 67, 0.28);
      text-align: center;
    }

    .qr-card h3 {
      color: #fff7e4;
      margin-bottom: 8px;
    }

    .qr-card p {
      color: rgba(255, 249, 237, 0.74);
      margin: 0 0 14px;
      font-size: 14px;
    }

    .qr-wrap {
      padding: 12px;
      border-radius: 20px;
      background: #fff7ea;
    }

    .qr-wrap img {
      width: 100%;
      border-radius: 14px;
    }

    .map-link {
      display: block;
      margin-top: 14px;
      padding: 10px 12px;
      border-radius: 999px;
      color: #23170b;
      background: linear-gradient(135deg, #f4d990, #bd8735);
      font-weight: 800;
    }

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

    .faq-item {
      border-radius: 20px;
      background: rgba(255, 255, 255, 0.68);
      border: 1px solid rgba(138, 98, 36, 0.16);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      border: 0;
      background: transparent;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 17px 18px;
      color: #21160a;
      font: inherit;
      font-weight: 800;
      text-align: left;
      cursor: pointer;
    }

    .faq-question span:last-child {
      width: 26px;
      height: 26px;
      flex: 0 0 26px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff7e4;
      background: #8e2d22;
      transition: transform 0.22s ease;
    }

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

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

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

    .link-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
    }

    .link-grid a {
      padding: 13px 15px;
      border-radius: 16px;
      color: #342719;
      background: rgba(255, 255, 255, 0.64);
      border: 1px solid rgba(138, 98, 36, 0.14);
      transition: transform 0.2s ease, border-color 0.2s ease;
      font-size: 14px;
    }

    .link-grid a:hover {
      transform: translateY(-2px);
      border-color: rgba(201, 154, 67, 0.44);
    }

    footer {
      margin-top: 28px;
      padding: 26px 0 30px;
      color: rgba(255, 249, 237, 0.78);
      background: #0d0c0b;
      border-top: 1px solid rgba(201, 154, 67, 0.22);
    }

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

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

    .footer-brand strong {
      color: #fff7e4;
    }

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

    .footer-links a {
      color: rgba(255, 249, 237, 0.82);
      font-size: 14px;
    }

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

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

    @keyframes floatSoft {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
    }

    .hero-visual {
      animation: floatSoft 6s ease-in-out infinite;
    }

    @media (max-width: 960px) {
      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 74px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        border-radius: 20px;
        background: rgba(17, 16, 14, 0.96);
        border: 1px solid rgba(201, 154, 67, 0.24);
      }

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

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

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

      .nav-cta {
        display: none;
      }

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

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

      .hero-notes {
        grid-template-columns: 1fr;
      }

      .qr-card {
        max-width: 360px;
      }
    }

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

      .hero {
        padding-top: 42px;
      }

      .section-head {
        display: block;
      }

      .section-head p {
        margin-top: 10px;
      }

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

      .hero-card {
        grid-template-columns: 1fr;
      }

      .seal {
        width: 54px;
        height: 54px;
      }

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

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