:root {
      --ink: #14343a;
      --ink-deep: #0d2429;
      --qing: #1f6f78;
      --jade: #6fa59d;
      --paper: #f8f4ea;
      --paper-soft: #fffaf1;
      --line: rgba(20, 52, 58, .14);
      --text: #263638;
      --muted: #64787a;
      --white: #ffffff;
      --shadow: 0 18px 46px rgba(13, 36, 41, .11);
      --radius-lg: 26px;
      --radius-md: 18px;
      --container: 1160px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--text);
      line-height: 1.75;
      background:
        radial-gradient(circle at 8% 4%, rgba(111, 165, 157, .22), transparent 30%),
        radial-gradient(circle at 90% 10%, rgba(31, 111, 120, .16), transparent 36%),
        linear-gradient(180deg, #fbf7ee 0%, #f5f1e7 46%, #f9f5eb 100%);
      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(248, 244, 234, .88);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(18px);
    }

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

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      flex: 0 0 auto;
    }

    .brand-mark {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #fdf8ed;
      font-size: 25px;
      font-weight: 800;
      letter-spacing: .08em;
      background:
        linear-gradient(145deg, #123238, #1d737a),
        radial-gradient(circle at 35% 28%, rgba(255, 255, 255, .35), transparent 36%);
      box-shadow: 0 12px 26px rgba(20, 52, 58, .2);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.25;
    }

    .brand-text strong {
      color: var(--ink-deep);
      font-size: 17px;
      letter-spacing: .02em;
    }

    .brand-text span {
      color: var(--muted);
      font-size: 12px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 8px;
      flex-wrap: wrap;
    }

    .nav-links a {
      padding: 8px 12px;
      border-radius: 999px;
      color: #244246;
      font-size: 14px;
      transition: background .2s ease, color .2s ease, transform .2s ease;
    }

    .nav-links a:hover {
      background: rgba(31, 111, 120, .1);
      color: var(--ink-deep);
      transform: translateY(-1px);
    }

    .nav-call {
      padding: 9px 15px;
      border-radius: 999px;
      background: var(--ink);
      color: #fffaf1;
      font-weight: 700;
      font-size: 14px;
      box-shadow: 0 12px 24px rgba(20, 52, 58, .18);
      white-space: nowrap;
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: rgba(255, 250, 241, .9);
      color: var(--ink);
      font-size: 22px;
      cursor: pointer;
    }

    main {
      position: relative;
    }

    .hero {
      padding: 54px 0 34px;
    }

    .hero-panel {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1.02fr) minmax(320px, .78fr);
      gap: 26px;
      align-items: stretch;
      overflow: hidden;
      padding: 30px;
      border: 1px solid rgba(20, 52, 58, .12);
      border-radius: 34px;
      background:
        linear-gradient(135deg, rgba(255, 250, 241, .94), rgba(236, 245, 241, .82)),
        radial-gradient(circle at 92% 10%, rgba(31, 111, 120, .18), transparent 36%);
      box-shadow: var(--shadow);
    }

    .hero-panel::before {
      content: "";
      position: absolute;
      width: 280px;
      height: 280px;
      right: -90px;
      bottom: -110px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(31, 111, 120, .18), transparent 68%);
      animation: breathe 6s ease-in-out infinite;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
      padding: 7px 12px;
      border: 1px solid rgba(31, 111, 120, .2);
      border-radius: 999px;
      color: var(--qing);
      background: rgba(255, 255, 255, .55);
      font-size: 13px;
      font-weight: 700;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 99px;
      background: var(--qing);
      box-shadow: 0 0 0 5px rgba(31, 111, 120, .1);
    }

    h1 {
      margin: 16px 0 14px;
      color: var(--ink-deep);
      font-size: clamp(32px, 6vw, 56px);
      line-height: 1.12;
      letter-spacing: -.04em;
    }

    .hero-copy {
      max-width: 650px;
      margin: 0 0 22px;
      color: #385052;
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      margin-top: 22px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 11px 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 800;
      cursor: pointer;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }

    .btn-primary {
      background: linear-gradient(135deg, #123238, #1f6f78);
      color: #fffaf1;
      box-shadow: 0 14px 28px rgba(20, 52, 58, .2);
    }

    .btn-soft {
      background: rgba(255, 255, 255, .62);
      color: var(--ink);
      border-color: rgba(20, 52, 58, .16);
    }

    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 30px rgba(20, 52, 58, .18);
    }

    .hero-note {
      margin-top: 18px;
      color: var(--muted);
      font-size: 14px;
    }

    .hero-visual {
      position: relative;
      display: grid;
      gap: 14px;
      align-content: start;
      z-index: 1;
    }

    .photo-stack {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .phone-photo {
      overflow: hidden;
      border-radius: 22px;
      border: 1px solid rgba(20, 52, 58, .12);
      background: #efe8d9;
      box-shadow: 0 14px 28px rgba(13, 36, 41, .12);
      aspect-ratio: 4 / 3;
    }

    .phone-photo:first-child {
      grid-column: span 2;
      aspect-ratio: 16 / 8.5;
    }

    .phone-photo img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transform: scale(1.015);
      transition: transform .45s ease;
    }

    .phone-photo:hover img {
      transform: scale(1.06);
    }

    .quote-card {
      padding: 18px;
      border-radius: 22px;
      background: rgba(255, 250, 241, .82);
      border: 1px solid rgba(20, 52, 58, .12);
    }

    .quote-card strong {
      color: var(--ink-deep);
      font-size: 18px;
    }

    .quote-card p {
      margin: 7px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    section {
      padding: 34px 0;
    }

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

    .section-kicker {
      margin: 0 0 6px;
      color: var(--qing);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .16em;
    }

    h2 {
      margin: 0;
      color: var(--ink-deep);
      font-size: clamp(25px, 4vw, 36px);
      line-height: 1.25;
      letter-spacing: -.02em;
    }

    .section-desc {
      max-width: 460px;
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .toc {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding: 14px;
      border: 1px solid rgba(20, 52, 58, .12);
      border-radius: 20px;
      background: rgba(255, 250, 241, .62);
    }

    .toc a {
      padding: 9px 13px;
      border-radius: 999px;
      background: rgba(31, 111, 120, .08);
      color: #244246;
      font-size: 14px;
      transition: background .2s ease, transform .2s ease;
    }

    .toc a:hover {
      background: rgba(31, 111, 120, .16);
      transform: translateY(-1px);
    }

    .price-wrap {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 20px;
      align-items: start;
    }

    .ink-card {
      position: relative;
      padding: 24px;
      border-radius: var(--radius-lg);
      background: rgba(255, 250, 241, .78);
      border: 1px solid rgba(20, 52, 58, .13);
      box-shadow: 0 12px 30px rgba(13, 36, 41, .07);
      overflow: hidden;
    }

    .ink-card::after {
      content: "";
      position: absolute;
      right: -58px;
      top: -58px;
      width: 140px;
      height: 140px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(31, 111, 120, .12), transparent 68%);
      pointer-events: none;
    }

    .ink-card h3 {
      position: relative;
      margin: 0 0 10px;
      color: var(--ink-deep);
      font-size: 21px;
      line-height: 1.35;
      z-index: 1;
    }

    .ink-card p {
      position: relative;
      margin: 0;
      color: #40575a;
      z-index: 1;
    }

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

    .factor-list li {
      padding: 13px 14px;
      border-radius: 16px;
      background: rgba(255, 255, 255, .62);
      border: 1px solid rgba(20, 52, 58, .1);
      color: #344c4e;
    }

    .process {
      display: grid;
      gap: 13px;
      counter-reset: step;
    }

    .process-item {
      display: grid;
      grid-template-columns: 42px 1fr;
      gap: 12px;
      align-items: start;
      padding: 17px;
      border-radius: 20px;
      border: 1px solid rgba(20, 52, 58, .12);
      background: rgba(255, 255, 255, .58);
      transition: transform .2s ease, border-color .2s ease;
    }

    .process-item:hover {
      transform: translateY(-2px);
      border-color: rgba(31, 111, 120, .28);
    }

    .process-item::before {
      counter-increment: step;
      content: counter(step);
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #fffaf1;
      background: linear-gradient(145deg, #14343a, #267983);
      font-weight: 900;
    }

    .process-item h3 {
      margin: 0 0 4px;
      color: var(--ink-deep);
      font-size: 18px;
    }

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

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

    .service-card {
      padding: 20px;
      border-radius: 22px;
      background: linear-gradient(180deg, rgba(255, 250, 241, .9), rgba(255, 255, 255, .6));
      border: 1px solid rgba(20, 52, 58, .12);
      box-shadow: 0 10px 24px rgba(13, 36, 41, .06);
      transition: transform .2s ease, box-shadow .2s ease;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 18px 34px rgba(13, 36, 41, .1);
    }

    .service-icon {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      margin-bottom: 13px;
      border-radius: 15px;
      color: var(--ink);
      background: rgba(31, 111, 120, .1);
      font-weight: 900;
    }

    .service-card h3 {
      margin: 0 0 7px;
      color: var(--ink-deep);
      font-size: 18px;
    }

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

    .solution-band {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      align-items: stretch;
    }

    .solution-panel {
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(20, 52, 58, .12);
      background:
        linear-gradient(135deg, rgba(255, 250, 241, .86), rgba(232, 242, 238, .76));
      box-shadow: 0 14px 34px rgba(13, 36, 41, .08);
    }

    .solution-panel h3 {
      margin: 0 0 12px;
      color: var(--ink-deep);
      font-size: 22px;
    }

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

    .check-list li {
      position: relative;
      padding-left: 26px;
      color: #40575a;
    }

    .check-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      top: 0;
      color: var(--qing);
      font-weight: 900;
    }

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

    .warranty-card {
      padding: 20px;
      border-radius: 20px;
      background: rgba(255, 255, 255, .6);
      border: 1px solid rgba(20, 52, 58, .12);
    }

    .warranty-card h3 {
      margin: 0 0 7px;
      color: var(--ink-deep);
      font-size: 18px;
    }

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

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

    .faq-item {
      border: 1px solid rgba(20, 52, 58, .12);
      border-radius: 18px;
      background: rgba(255, 250, 241, .72);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      padding: 17px 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      border: 0;
      background: transparent;
      color: var(--ink-deep);
      font-size: 17px;
      font-weight: 800;
      text-align: left;
      cursor: pointer;
    }

    .faq-question span:last-child {
      flex: 0 0 auto;
      width: 26px;
      height: 26px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(31, 111, 120, .1);
      color: var(--qing);
      transition: transform .2s ease;
    }

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

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

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

    .contact-card {
      display: grid;
      grid-template-columns: 1fr 340px;
      gap: 22px;
      padding: 26px;
      border-radius: 30px;
      background:
        linear-gradient(135deg, rgba(20, 52, 58, .96), rgba(31, 111, 120, .92)),
        radial-gradient(circle at 12% 18%, rgba(255, 255, 255, .2), transparent 30%);
      color: #fffaf1;
      box-shadow: var(--shadow);
    }

    .contact-card h2,
    .contact-card h3 {
      color: #fffaf1;
    }

    .contact-card p {
      color: rgba(255, 250, 241, .82);
    }

    .contact-info {
      display: grid;
      gap: 12px;
      margin-top: 16px;
    }

    .contact-row {
      padding: 13px 15px;
      border-radius: 16px;
      background: rgba(255, 255, 255, .1);
      border: 1px solid rgba(255, 255, 255, .16);
    }

    .contact-row strong {
      display: block;
      color: #ffffff;
      margin-bottom: 3px;
    }

    .qr-box {
      padding: 18px;
      border-radius: 24px;
      background: #fffaf1;
      color: var(--ink-deep);
      align-self: start;
    }

    .qr-box img {
      width: 100%;
      border-radius: 18px;
      border: 1px solid rgba(20, 52, 58, .12);
      background: #fff;
    }

    .qr-box h3 {
      margin: 12px 0 6px;
      color: var(--ink-deep);
      font-size: 18px;
    }

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

    .map-link {
      display: inline-flex;
      margin-top: 12px;
      padding: 9px 12px;
      border-radius: 999px;
      background: rgba(31, 111, 120, .1);
      color: #145d66;
      font-weight: 800;
      font-size: 14px;
    }

    .related-links {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-top: 16px;
    }

    .related-links a {
      padding: 13px 14px;
      border-radius: 16px;
      border: 1px solid rgba(20, 52, 58, .12);
      background: rgba(255, 250, 241, .66);
      color: #2d484b;
      font-size: 14px;
      transition: transform .2s ease, background .2s ease;
    }

    .related-links a:hover {
      transform: translateY(-2px);
      background: rgba(255, 255, 255, .84);
    }

    .site-footer {
      margin-top: 20px;
      padding: 24px 0;
      background: #f0eadf;
      border-top: 1px solid rgba(20, 52, 58, .14);
      color: #263638;
    }

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

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

    .footer-links a {
      color: #244246;
    }

    .float-call {
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 40;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 10px 16px;
      border-radius: 999px;
      background: var(--ink);
      color: #fffaf1;
      font-weight: 900;
      box-shadow: 0 16px 30px rgba(13, 36, 41, .24);
      transition: transform .2s ease;
    }

    .float-call:hover {
      transform: translateY(-3px);
    }

    .reveal {
      opacity: 0;
      transform: translateY(18px);
      transition: opacity .6s ease, transform .6s ease;
    }

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

    @keyframes breathe {
      0%, 100% {
        transform: scale(1);
        opacity: .8;
      }
      50% {
        transform: scale(1.12);
        opacity: .45;
      }
    }

    @media (max-width: 960px) {
      .menu-toggle {
        display: grid;
        place-items: center;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 74px;
        display: none;
        padding: 14px;
        border-radius: 20px;
        background: rgba(255, 250, 241, .98);
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
        justify-content: flex-start;
      }

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

      .nav-call {
        display: none;
      }

      .hero-panel,
      .price-wrap,
      .solution-band,
      .contact-card {
        grid-template-columns: 1fr;
      }

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

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

      .contact-card {
        padding: 22px;
      }

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

    @media (max-width: 620px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      .nav {
        min-height: 66px;
      }

      .brand-text span {
        display: none;
      }

      .hero {
        padding-top: 28px;
      }

      .hero-panel {
        padding: 20px;
        border-radius: 26px;
      }

      .photo-stack {
        grid-template-columns: 1fr;
      }

      .phone-photo:first-child {
        grid-column: auto;
        aspect-ratio: 4 / 3;
      }

      section {
        padding: 28px 0;
      }

      .service-grid,
      .warranty-grid,
      .related-links {
        grid-template-columns: 1fr;
      }

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

      .float-call {
        right: 12px;
        bottom: 12px;
      }
    }