:root {
      --pink: #ed3f78;
      --pink-dark: #c92c61;
      --rose: #fff2f6;
      --rose-deep: #ffe0ea;
      --ink: #25212a;
      --muted: #6e6872;
      --line: #eadce2;
      --paper: #fffdfd;
      --white: #ffffff;
      --green: #237b69;
      --shadow: 0 16px 40px rgba(151, 47, 86, .1);
      --radius: 16px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.7;
    }

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

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

    .container {
      width: min(1180px, calc(100% - 40px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 253, 253, .96);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(12px);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-width: 150px;
      font-weight: 800;
      letter-spacing: 0;
    }

    .ai-page-logo {
      width: 42px;
      max-height: 42px;
      object-fit: contain;
    }

    .brand-text {
      font-size: 18px;
      white-space: nowrap;
    }

    .nav-links {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 0;
      flex-wrap: wrap;
    }

    .nav-links a {
      display: inline-flex;
      align-items: center;
      min-height: 42px;
      padding: 0 10px;
      color: #4e4650;
      font-size: 14px;
      transition: color .2s ease, background .2s ease;
    }

    .nav-links a:hover {
      color: var(--pink-dark);
      background: var(--rose);
    }

    .nav-cta {
      margin-left: 8px;
      padding: 11px 16px !important;
      min-height: 40px !important;
      color: var(--white) !important;
      background: var(--pink);
      border-radius: 9px;
      font-weight: 700;
    }

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: var(--white);
      color: var(--ink);
      padding: 8px 11px;
      border-radius: 8px;
      font-size: 20px;
      cursor: pointer;
    }

    .hero {
      position: relative;
      overflow: hidden;
      background: var(--rose);
      border-bottom: 1px solid var(--rose-deep);
    }

    .hero::before,
    .hero::after {
      position: absolute;
      content: "";
      pointer-events: none;
      border: 1px solid rgba(237, 63, 120, .16);
      transform: rotate(18deg);
    }

    .hero::before {
      width: 260px;
      height: 260px;
      right: 4%;
      top: 8%;
      border-radius: 48% 52% 38% 62%;
    }

    .hero::after {
      width: 170px;
      height: 170px;
      right: 20%;
      bottom: -70px;
      border-radius: 50%;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      min-height: 590px;
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr);
      align-items: center;
      gap: 60px;
      padding: 88px 0 78px;
    }

    .eyebrow,
    .section-kicker {
      color: var(--pink-dark);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 2px;
      text-transform: uppercase;
    }

    h1,
    h2,
    h3,
    p {
      margin-top: 0;
    }

    h1 {
      max-width: 680px;
      margin-bottom: 22px;
      font-size: clamp(38px, 6vw, 72px);
      line-height: 1.13;
      letter-spacing: 0;
    }

    .hero-copy {
      max-width: 650px;
      color: #554c54;
      font-size: 18px;
    }

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

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 0 21px;
      border: 1px solid transparent;
      border-radius: 9px;
      cursor: pointer;
      font: inherit;
      font-weight: 700;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }

    .button:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(201, 44, 97, .18);
    }

    .button-primary {
      color: var(--white);
      background: var(--pink);
    }

    .button-secondary {
      color: var(--pink-dark);
      background: var(--white);
      border-color: #efb7c9;
    }

    .hero-panel {
      padding: 25px;
      background: rgba(255, 255, 255, .82);
      border: 1px solid #f0c7d3;
      border-radius: 20px;
      box-shadow: var(--shadow);
    }

    .hero-panel h2 {
      margin-bottom: 16px;
      font-size: 21px;
    }

    .metric-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 10px;
    }

    .metric {
      padding: 16px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 12px;
    }

    .metric strong {
      display: block;
      color: var(--pink-dark);
      font-size: 25px;
      line-height: 1.2;
    }

    .metric span {
      display: block;
      margin-top: 5px;
      color: var(--muted);
      font-size: 13px;
    }

    section {
      padding: 92px 0;
    }

    .section-heading {
      max-width: 700px;
      margin-bottom: 36px;
    }

    .section-heading h2 {
      margin: 8px 0 12px;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.2;
    }

    .section-heading p {
      margin-bottom: 0;
      color: var(--muted);
    }

    .about-band {
      background: var(--white);
    }

    .about-layout {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 50px;
      align-items: start;
    }

    .about-lead {
      padding-right: 20px;
    }

    .about-lead h2 {
      margin: 10px 0 18px;
      font-size: 38px;
      line-height: 1.25;
    }

    .about-lead p {
      color: var(--muted);
    }

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

    .feature-item {
      padding: 22px;
      border-top: 3px solid var(--pink);
      background: var(--rose);
    }

    .feature-item h3 {
      margin-bottom: 8px;
      font-size: 18px;
    }

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

    .service-section {
      background: #fff8fa;
    }

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

    .service-card,
    .review-card,
    .case-card,
    .article-card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }

    .service-card:hover,
    .review-card:hover,
    .case-card:hover,
    .article-card:hover {
      transform: translateY(-5px);
      border-color: #ef9db6;
      box-shadow: var(--shadow);
    }

    .service-card {
      padding: 23px;
    }

    .service-icon {
      display: inline-flex;
      width: 36px;
      height: 36px;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      color: var(--white);
      background: var(--pink);
      border-radius: 10px;
      font-weight: 800;
    }

    .service-card h3 {
      margin-bottom: 8px;
      font-size: 18px;
    }

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

    .workflow {
      background: var(--white);
    }

    .steps {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 0;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .step {
      position: relative;
      padding: 28px 20px 30px;
      border-right: 1px solid var(--line);
    }

    .step:last-child {
      border-right: 0;
    }

    .step-number {
      display: block;
      margin-bottom: 15px;
      color: var(--pink);
      font-size: 25px;
      font-weight: 800;
    }

    .step h3 {
      margin-bottom: 8px;
      font-size: 17px;
    }

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

    .network-section {
      background: var(--rose);
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      max-width: 980px;
    }

    .tag {
      padding: 9px 14px;
      color: #6c2850;
      background: var(--white);
      border: 1px solid #f0bdcf;
      border-radius: 100px;
      font-size: 14px;
    }

    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      margin-top: 32px;
    }

    .solution {
      padding: 25px;
      background: var(--white);
      border-left: 4px solid var(--pink);
      box-shadow: 0 9px 24px rgba(119, 36, 70, .06);
    }

    .solution h3 {
      margin-bottom: 8px;
    }

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

    .case-section {
      background: var(--white);
    }

    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .case-card {
      overflow: hidden;
    }

    .case-image {
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: var(--rose-deep);
    }

    .case-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .case-content {
      padding: 21px;
    }

    .case-content h3 {
      margin-bottom: 8px;
    }

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

    .comparison {
      background: #fff8fa;
    }

    .rating-box {
      display: flex;
      align-items: center;
      gap: 26px;
      margin-bottom: 28px;
      padding: 24px;
      color: var(--white);
      background: var(--pink-dark);
      border-radius: 15px;
    }

    .rating-score {
      font-size: 42px;
      font-weight: 800;
      line-height: 1;
    }

    .rating-stars {
      color: #ffd36a;
      font-size: 25px;
      letter-spacing: 3px;
    }

    .rating-box p {
      margin: 5px 0 0;
      color: #ffe8ef;
    }

    .table-wrap {
      overflow-x: auto;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 14px;
    }

    table {
      width: 100%;
      min-width: 720px;
      border-collapse: collapse;
      text-align: left;
    }

    th,
    td {
      padding: 16px 18px;
      border-bottom: 1px solid var(--line);
      vertical-align: top;
    }

    th {
      color: var(--pink-dark);
      background: var(--rose);
      font-size: 14px;
    }

    tr:last-child td {
      border-bottom: 0;
    }

    td {
      color: var(--muted);
      font-size: 14px;
    }

    td:first-child {
      width: 22%;
      color: var(--ink);
      font-weight: 700;
    }

    .reviews {
      background: var(--white);
    }

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

    .review-card {
      padding: 23px;
    }

    .review-card blockquote {
      margin: 0 0 18px;
      color: #4e4750;
      font-size: 15px;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--muted);
      font-size: 13px;
    }

    .review-mark {
      display: inline-flex;
      width: 32px;
      height: 32px;
      align-items: center;
      justify-content: center;
      color: var(--white);
      background: var(--pink);
      border-radius: 50%;
      font-weight: 700;
    }

    .pricing {
      background: var(--rose);
    }

    .price-layout {
      display: grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 22px;
      align-items: stretch;
    }

    .price-panel {
      padding: 28px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 15px;
    }

    .price-panel h3 {
      margin-bottom: 14px;
    }

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

    .price-list li {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding: 12px 0;
      border-bottom: 1px dashed var(--line);
      color: var(--muted);
      font-size: 14px;
    }

    .price-list strong {
      color: var(--pink-dark);
      white-space: nowrap;
    }

    .join-panel {
      color: var(--white);
      background: var(--pink-dark);
      border-color: var(--pink-dark);
    }

    .join-panel p {
      color: #ffe3eb;
    }

    .join-panel .button {
      color: var(--pink-dark);
      background: var(--white);
    }

    .articles {
      background: var(--white);
    }

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

    .article-card {
      padding: 22px;
    }

    .article-card span {
      color: var(--pink);
      font-size: 13px;
      font-weight: 700;
    }

    .article-card h3 {
      margin: 8px 0;
      font-size: 18px;
    }

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

    .faq-section {
      background: #fff8fa;
    }

    .faq-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px 16px;
    }

    .faq-item {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 10px;
    }

    .faq-item summary {
      position: relative;
      padding: 17px 44px 17px 18px;
      cursor: pointer;
      font-weight: 700;
      list-style: none;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      position: absolute;
      right: 18px;
      content: "+";
      color: var(--pink);
      font-size: 22px;
      line-height: 1;
    }

    .faq-item[open] summary::after {
      content: "−";
    }

    .faq-answer {
      padding: 0 18px 17px;
      color: var(--muted);
      font-size: 14px;
    }

    .contact-section {
      background: var(--white);
    }

    .contact-layout {
      display: grid;
      grid-template-columns: .75fr 1.25fr;
      gap: 45px;
      align-items: start;
    }

    .contact-info h2 {
      margin: 9px 0 16px;
      font-size: 38px;
      line-height: 1.25;
    }

    .contact-info p {
      color: var(--muted);
    }

    .contact-list {
      display: grid;
      gap: 11px;
      margin-top: 24px;
    }

    .contact-list div {
      padding: 13px 15px;
      background: var(--rose);
      border-left: 3px solid var(--pink);
    }

    .form-panel {
      padding: 28px;
      background: #fff8fa;
      border: 1px solid var(--line);
      border-radius: 15px;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .field {
      display: grid;
      gap: 7px;
    }

    .field-full {
      grid-column: 1 / -1;
    }

    label {
      color: #4e4650;
      font-size: 14px;
      font-weight: 700;
    }

    input,
    select,
    textarea {
      width: 100%;
      padding: 12px 13px;
      color: var(--ink);
      background: var(--white);
      border: 1px solid #decbd3;
      border-radius: 8px;
      font: inherit;
      outline: none;
    }

    input:focus,
    select:focus,
    textarea:focus {
      border-color: var(--pink);
      box-shadow: 0 0 0 3px rgba(237, 63, 120, .12);
    }

    textarea {
      min-height: 120px;
      resize: vertical;
    }

    .form-submit {
      margin-top: 18px;
    }

    .floating-service {
      position: fixed;
      right: 22px;
      bottom: 22px;
      z-index: 15;
      display: grid;
      gap: 8px;
    }

    .float-button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 46px;
      min-height: 46px;
      padding: 0 15px;
      color: var(--white);
      background: var(--pink);
      border-radius: 24px;
      box-shadow: 0 10px 22px rgba(201, 44, 97, .28);
      font-size: 14px;
      font-weight: 700;
    }

    .qr-popover {
      display: none;
      width: 170px;
      padding: 10px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: 12px;
      box-shadow: var(--shadow);
    }

    .qr-popover.active {
      display: block;
    }

    .qr-popover img {
      width: 150px;
      margin: 0 auto 5px;
    }

    .qr-popover p {
      margin: 0;
      color: var(--muted);
      text-align: center;
      font-size: 12px;
    }

    footer {
      color: #fbeaf0;
      background: #3a2530;
    }

    .footer-main {
      display: grid;
      grid-template-columns: 1.1fr .9fr 1fr;
      gap: 35px;
      padding: 52px 0 35px;
    }

    footer h2,
    footer h3 {
      color: var(--white);
    }

    footer h2 {
      margin: 0 0 12px;
      font-size: 22px;
    }

    footer h3 {
      margin: 0 0 12px;
      font-size: 16px;
    }

    footer p {
      margin-bottom: 8px;
      color: #e9cbd6;
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 15px;
    }

    .footer-links a {
      color: #f5d9e2;
      font-size: 14px;
    }

    .footer-links a:hover {
      color: var(--white);
    }

    .footer-bottom {
      padding: 18px 0;
      color: #d9b7c4;
      border-top: 1px solid rgba(255, 255, 255, .14);
      font-size: 13px;
    }

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

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

    @media (max-width: 1050px) {
      .nav-links a {
        padding: 0 6px;
        font-size: 13px;
      }

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

      .steps {
        grid-template-columns: repeat(3, 1fr);
      }

      .step:nth-child(3) {
        border-right: 0;
      }

      .step:nth-child(-n+3) {
        border-bottom: 1px solid var(--line);
      }
    }

    @media (max-width: 800px) {
      .container {
        width: min(100% - 28px, 680px);
      }

      .header-inner {
        min-height: 68px;
      }

      .menu-toggle {
        display: block;
      }

      .nav-links {
        position: absolute;
        top: 68px;
        right: 14px;
        left: 14px;
        display: none;
        padding: 10px;
        background: var(--white);
        border: 1px solid var(--line);
        border-radius: 12px;
        box-shadow: var(--shadow);
      }

      .nav-links.active {
        display: grid;
      }

      .nav-links a {
        justify-content: flex-start;
        padding: 10px 12px;
      }

      .nav-cta {
        margin-left: 0;
        margin-top: 5px;
      }

      .hero-inner,
      .about-layout,
      .price-layout,
      .contact-layout {
        grid-template-columns: 1fr;
      }

      .hero-inner {
        min-height: auto;
        gap: 35px;
        padding: 65px 0 60px;
      }

      .hero-panel {
        max-width: 520px;
      }

      section {
        padding: 68px 0;
      }

      .solution-grid,
      .case-grid,
      .review-grid,
      .article-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .faq-list {
        grid-template-columns: 1fr;
      }

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

    @media (max-width: 560px) {
      h1 {
        font-size: 40px;
      }

      .hero-copy {
        font-size: 16px;
      }

      .feature-list,
      .service-grid,
      .solution-grid,
      .case-grid,
      .review-grid,
      .article-grid,
      .form-grid,
      .footer-main {
        grid-template-columns: 1fr;
      }

      .field-full {
        grid-column: auto;
      }

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

      .step,
      .step:nth-child(3) {
        border-right: 0;
        border-bottom: 1px solid var(--line);
      }

      .step:last-child {
        border-bottom: 0;
      }

      .rating-box {
        align-items: flex-start;
        flex-direction: column;
        gap: 12px;
      }

      .floating-service {
        right: 14px;
        bottom: 14px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }

      *,
      *::before,
      *::after {
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
      }
    }