:root {
      --mint-50: #f2fbf5;
      --mint-100: #e1f5e8;
      --mint-200: #c6ead4;
      --mint-500: #2f9d68;
      --mint-600: #247a52;
      --mint-700: #195b3f;
      --ink: #17352a;
      --muted: #61746a;
      --paper: #ffffff;
      --line: #dbe9df;
      --coral: #ec846a;
      --gold: #d79d3c;
      --shadow: 0 18px 50px rgba(39, 98, 65, .10);
      --radius: 18px;
      --container: 1180px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--mint-50);
      font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.7;
    }

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

    button,
    input,
    select,
    textarea {
      font: inherit;
    }

    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(255, 255, 255, .94);
      border-bottom: 1px solid rgba(219, 233, 223, .9);
      backdrop-filter: blur(14px);
    }

    .nav-wrap {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      flex-shrink: 0;
    }

    .ai-page-logo {
      width: 144px;
    }

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

    .nav-links a {
      color: #476158;
      font-size: 14px;
      padding: 8px 10px;
      transition: color .2s ease, background .2s ease;
      border-radius: 8px;
    }

    .nav-links a:hover {
      color: var(--mint-700);
      background: var(--mint-100);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 11px 18px;
      border-radius: 9px;
      background: var(--mint-600);
      color: #fff;
      font-weight: 700;
      font-size: 14px;
      white-space: nowrap;
      transition: transform .2s ease, background .2s ease;
    }

    .nav-cta:hover {
      background: var(--mint-700);
      transform: translateY(-2px);
    }

    .menu-toggle {
      display: none;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--mint-700);
      border-radius: 8px;
      padding: 8px 11px;
      cursor: pointer;
    }

    .hero {
      position: relative;
      overflow: hidden;
      padding: 92px 0 78px;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, .94), rgba(232, 248, 237, .96)),
        repeating-linear-gradient(90deg, transparent 0, transparent 79px, rgba(47, 157, 104, .05) 80px);
      border-bottom: 1px solid var(--line);
    }

    .hero::after {
      content: "";
      position: absolute;
      width: 430px;
      height: 430px;
      right: -130px;
      top: -170px;
      border: 1px solid rgba(47, 157, 104, .18);
      border-radius: 50%;
      box-shadow: 0 0 0 34px rgba(47, 157, 104, .04), 0 0 0 68px rgba(47, 157, 104, .025);
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(310px, .9fr);
      gap: 58px;
      align-items: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--mint-600);
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0;
      margin-bottom: 18px;
    }

    .eyebrow::before {
      content: "";
      width: 24px;
      height: 2px;
      background: var(--coral);
    }

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

    h1 {
      max-width: 680px;
      margin-bottom: 22px;
      font-size: clamp(38px, 6vw, 70px);
      line-height: 1.12;
      letter-spacing: 0;
      color: var(--ink);
    }

    .hero-copy {
      max-width: 650px;
      color: #4c665b;
      font-size: 18px;
      margin-bottom: 30px;
    }

    .button-row {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 21px;
      border-radius: 9px;
      border: 1px solid transparent;
      cursor: pointer;
      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(36, 122, 82, .15);
    }

    .button-primary {
      background: var(--mint-600);
      color: #fff;
    }

    .button-secondary {
      background: #fff;
      border-color: var(--line);
      color: var(--mint-700);
    }

    .hero-panel {
      padding: 25px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 22px;
      box-shadow: var(--shadow);
    }

    .panel-top {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 20px;
      padding-bottom: 18px;
      border-bottom: 1px solid var(--line);
    }

    .panel-top h2 {
      margin-bottom: 4px;
      font-size: 20px;
    }

    .panel-top p {
      margin-bottom: 0;
      color: var(--muted);
      font-size: 13px;
    }

    .status-dot {
      width: 11px;
      height: 11px;
      margin-top: 8px;
      flex-shrink: 0;
      border-radius: 50%;
      background: var(--coral);
      box-shadow: 0 0 0 6px rgba(236, 132, 106, .14);
    }

    .week-list {
      display: grid;
      gap: 13px;
      margin-top: 20px;
    }

    .week-item {
      display: grid;
      grid-template-columns: 66px 1fr;
      gap: 13px;
      align-items: center;
    }

    .week-day {
      padding: 7px 5px;
      text-align: center;
      color: var(--mint-700);
      background: var(--mint-100);
      border-radius: 7px;
      font-size: 13px;
      font-weight: 700;
    }

    .week-item strong {
      display: block;
      margin-bottom: 2px;
      font-size: 14px;
    }

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

    .section {
      padding: 88px 0;
    }

    .section-tinted {
      background: #eaf7ee;
    }

    .section-white {
      background: #fff;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      gap: 30px;
      margin-bottom: 34px;
    }

    .section-head h2 {
      max-width: 650px;
      margin-bottom: 0;
      font-size: clamp(28px, 4vw, 43px);
      line-height: 1.25;
    }

    .section-lead {
      max-width: 520px;
      margin-bottom: 0;
      color: var(--muted);
    }

    .intro-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
      gap: 26px;
      align-items: stretch;
    }

    .intro-copy {
      padding: 34px;
      background: #fff;
      border-left: 5px solid var(--coral);
      border-radius: 0 16px 16px 0;
      box-shadow: var(--shadow);
    }

    .intro-copy h3 {
      font-size: 25px;
      margin-bottom: 13px;
    }

    .intro-copy p {
      color: var(--muted);
      margin-bottom: 15px;
    }

    .intro-copy p:last-child {
      margin-bottom: 0;
    }

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

    .metric {
      padding: 23px;
      background: #f8fdf9;
      border: 1px solid var(--line);
      border-radius: 14px;
    }

    .metric strong {
      display: block;
      color: var(--mint-700);
      font-size: 30px;
      line-height: 1.2;
      margin-bottom: 6px;
    }

    .metric span {
      color: var(--muted);
      font-size: 13px;
    }

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

    .service-card {
      padding: 23px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 14px;
      transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }

    .service-card:hover,
    .review-card:hover,
    .case-card:hover {
      transform: translateY(-5px);
      border-color: var(--mint-200);
      box-shadow: var(--shadow);
    }

    .service-index {
      color: var(--coral);
      font-weight: 800;
      font-size: 13px;
      margin-bottom: 15px;
    }

    .service-card h3 {
      font-size: 18px;
      margin-bottom: 9px;
    }

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

    .capability-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 14px;
      margin-top: 28px;
    }

    .capability-list span,
    .tag-cloud span {
      display: inline-flex;
      align-items: center;
      min-height: 38px;
      padding: 7px 13px;
      background: #f7fcf8;
      border: 1px solid var(--line);
      border-radius: 8px;
      color: #426156;
      font-size: 13px;
    }

    .workflow {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 0;
      position: relative;
    }

    .workflow::before {
      content: "";
      position: absolute;
      left: 10%;
      right: 10%;
      top: 27px;
      height: 1px;
      background: var(--mint-200);
    }

    .step {
      position: relative;
      z-index: 1;
      padding: 0 15px;
      text-align: center;
    }

    .step-num {
      display: grid;
      place-items: center;
      width: 55px;
      height: 55px;
      margin: 0 auto 17px;
      border: 7px solid var(--mint-100);
      border-radius: 50%;
      background: var(--mint-600);
      color: #fff;
      font-weight: 800;
    }

    .step h3 {
      font-size: 16px;
      margin-bottom: 6px;
    }

    .step p {
      color: var(--muted);
      font-size: 13px;
      margin-bottom: 0;
    }

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

    .solution-card {
      padding: 26px;
      background: #fff;
      border-top: 4px solid var(--mint-500);
      border-radius: 3px 3px 14px 14px;
      box-shadow: 0 12px 30px rgba(39, 98, 65, .06);
    }

    .solution-card h3 {
      margin-bottom: 10px;
      font-size: 19px;
    }

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

    .network-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(300px, .8fr);
      gap: 35px;
      align-items: start;
    }

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

    .network-note {
      padding: 28px;
      background: var(--mint-700);
      color: #fff;
      border-radius: 16px;
    }

    .network-note h3 {
      margin-bottom: 10px;
      color: #fff;
    }

    .network-note p {
      color: #d7eee0;
      margin-bottom: 0;
      font-size: 14px;
    }

    .compare-wrap {
      overflow-x: auto;
      border: 1px solid var(--line);
      border-radius: 15px;
      background: #fff;
    }

    .compare-table {
      width: 100%;
      min-width: 760px;
      border-collapse: collapse;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 18px;
      text-align: left;
      border-bottom: 1px solid var(--line);
      font-size: 14px;
      vertical-align: top;
    }

    .compare-table th {
      background: var(--mint-700);
      color: #fff;
      font-weight: 700;
    }

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

    .compare-table td:first-child {
      width: 23%;
      color: var(--ink);
      font-weight: 700;
    }

    .compare-table td:nth-child(2) {
      color: var(--mint-700);
      font-weight: 700;
    }

    .rating-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 25px;
      padding: 25px 30px;
      margin-bottom: 24px;
      background: #fff8ed;
      border: 1px solid #f1dfbc;
      border-radius: 15px;
    }

    .rating-box strong {
      color: #9a681d;
      font-size: 32px;
    }

    .stars {
      color: var(--gold);
      letter-spacing: 3px;
      font-size: 22px;
    }

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

    .price-card {
      padding: 25px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 14px;
    }

    .price-card.featured {
      border: 2px solid var(--mint-500);
      padding: 24px;
    }

    .price-card h3 {
      margin-bottom: 8px;
      font-size: 20px;
    }

    .price-card p {
      min-height: 48px;
      color: var(--muted);
      font-size: 13px;
    }

    .price {
      margin: 17px 0;
      color: var(--mint-700);
      font-size: 27px;
      font-weight: 800;
    }

    .price small {
      color: var(--muted);
      font-size: 13px;
      font-weight: 400;
    }

    .price-card ul {
      padding-left: 18px;
      margin: 0;
      color: #526b60;
      font-size: 13px;
    }

    .price-card li {
      margin-bottom: 7px;
    }

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

    .case-card,
    .review-card,
    .article-card {
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 14px;
      transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }

    .case-media {
      aspect-ratio: 16 / 8;
      overflow: hidden;
      background: var(--mint-100);
    }

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

    .case-body,
    .review-body,
    .article-body {
      padding: 21px;
    }

    .case-body h3,
    .review-body h3,
    .article-body h3 {
      margin-bottom: 7px;
      font-size: 18px;
    }

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

    .review-card {
      position: relative;
      padding-top: 7px;
    }

    .review-body::before {
      content: "“";
      display: block;
      height: 30px;
      color: var(--coral);
      font-size: 42px;
      line-height: 1;
      font-family: Georgia, serif;
    }

    .review-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-top: 17px;
      color: var(--mint-700);
      font-size: 13px;
      font-weight: 700;
    }

    .article-card {
      padding: 22px;
    }

    .article-card h3 {
      min-height: 54px;
    }

    .article-link {
      display: inline-flex;
      margin-top: 16px;
      color: var(--mint-600);
      font-size: 13px;
      font-weight: 700;
    }

    .faq-list {
      display: grid;
      gap: 10px;
      max-width: 930px;
      margin: 0 auto;
    }

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

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      width: 100%;
      padding: 18px 20px;
      border: 0;
      background: transparent;
      color: var(--ink);
      cursor: pointer;
      text-align: left;
      font-weight: 700;
    }

    .faq-question::after {
      content: "+";
      flex-shrink: 0;
      color: var(--mint-600);
      font-size: 22px;
      font-weight: 400;
      transition: transform .2s ease;
    }

    .faq-item.open .faq-question::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      display: none;
      padding: 0 20px 18px;
      color: var(--muted);
      font-size: 14px;
    }

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

    .contact-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(300px, .72fr);
      gap: 30px;
      align-items: start;
    }

    .form-panel {
      padding: 30px;
      background: #fff;
      border: 1px solid var(--line);
      border-radius: 15px;
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 15px;
    }

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

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

    .field label {
      color: #3e5a4e;
      font-size: 13px;
      font-weight: 700;
    }

    .field input,
    .field select,
    .field textarea {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 8px;
      padding: 11px 12px;
      background: #fbfefc;
      color: var(--ink);
      outline: none;
      transition: border-color .2s ease, box-shadow .2s ease;
    }

    .field textarea {
      min-height: 125px;
      resize: vertical;
    }

    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      border-color: var(--mint-500);
      box-shadow: 0 0 0 3px rgba(47, 157, 104, .12);
    }

    .contact-panel {
      padding: 30px;
      background: var(--mint-700);
      color: #fff;
      border-radius: 15px;
    }

    .contact-panel h3 {
      color: #fff;
      font-size: 25px;
      margin-bottom: 10px;
    }

    .contact-panel p {
      color: #d6eee0;
      font-size: 14px;
    }

    .contact-list {
      display: grid;
      gap: 12px;
      margin: 22px 0;
      color: #effaf2;
      font-size: 14px;
    }

    .qr-box {
      display: flex;
      align-items: center;
      gap: 15px;
      padding-top: 18px;
      border-top: 1px solid rgba(255, 255, 255, .2);
    }

    .qr-box img {
      width: 86px;
      border-radius: 8px;
      background: #fff;
      padding: 4px;
    }

    .qr-box span {
      color: #d6eee0;
      font-size: 13px;
    }

    .join-band {
      padding: 35px 0;
      background: var(--coral);
      color: #fff;
    }

    .join-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 25px;
    }

    .join-wrap h2 {
      margin-bottom: 6px;
      color: #fff;
      font-size: 28px;
    }

    .join-wrap p {
      margin-bottom: 0;
      color: #fff3ee;
    }

    .join-wrap .button-secondary {
      border-color: #fff;
      color: #9a4937;
      flex-shrink: 0;
    }

    .site-footer {
      background: #17352a;
      color: #d7eee0;
      padding: 48px 0 22px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .8fr 1fr;
      gap: 35px;
      padding-bottom: 35px;
      border-bottom: 1px solid rgba(215, 238, 224, .18);
    }

    .footer-brand {
      color: #fff;
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .footer-grid h3 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 12px;
    }

    .footer-grid p,
    .footer-grid a {
      color: #b9d7c5;
      font-size: 13px;
    }

    .footer-links {
      display: grid;
      gap: 6px;
    }

    .footer-grid a:hover {
      color: #fff;
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding-top: 18px;
      color: #9fc3ae;
      font-size: 12px;
    }

    .float-service,
    .back-top {
      position: fixed;
      right: 22px;
      z-index: 15;
      display: grid;
      place-items: center;
      width: 48px;
      height: 48px;
      border: 0;
      border-radius: 50%;
      cursor: pointer;
      box-shadow: 0 10px 25px rgba(24, 82, 53, .2);
    }

    .float-service {
      bottom: 82px;
      background: var(--coral);
      color: #fff;
      font-size: 13px;
      font-weight: 700;
    }

    .back-top {
      right: 22px;
      bottom: 22px;
      background: var(--mint-600);
      color: #fff;
      opacity: 0;
      visibility: hidden;
      transition: opacity .2s ease, visibility .2s ease;
    }

    .back-top.visible {
      opacity: 1;
      visibility: visible;
    }

    .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-left: 7px;
        padding-right: 7px;
        font-size: 13px;
      }

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

      .hero-grid,
      .intro-grid,
      .network-layout,
      .contact-layout {
        gap: 28px;
      }
    }

    @media (max-width: 800px) {
      .container {
        width: min(var(--container), calc(100% - 30px));
      }

      .nav-wrap {
        min-height: 66px;
      }

      .menu-toggle {
        display: inline-flex;
      }

      .nav-links {
        display: none;
        position: absolute;
        top: 66px;
        left: 15px;
        right: 15px;
        padding: 10px;
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 12px;
        box-shadow: var(--shadow);
      }

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

      .nav-links a,
      .nav-cta {
        width: 100%;
        text-align: center;
      }

      .hero {
        padding: 68px 0 60px;
      }

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

      .section {
        padding: 64px 0;
      }

      .section-head,
      .join-wrap {
        display: block;
      }

      .section-lead {
        margin-top: 14px;
      }

      .join-wrap .button {
        margin-top: 20px;
      }

      .workflow {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .workflow::before {
        top: 25px;
        bottom: 25px;
        left: 50%;
        right: auto;
        width: 1px;
        height: auto;
      }

      .step {
        display: grid;
        grid-template-columns: 55px 1fr;
        gap: 15px;
        text-align: left;
        align-items: center;
        padding: 0;
      }

      .step-num {
        margin: 0;
      }

      .step p {
        grid-column: 2;
        margin-top: -14px;
      }

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

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

      .footer-grid > :first-child {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 520px) {
      h1 {
        font-size: 40px;
      }

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

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

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

      .footer-grid > :first-child {
        grid-column: auto;
      }

      .rating-box {
        display: block;
      }

      .stars {
        margin-top: 8px;
      }

      .footer-bottom {
        display: block;
      }

      .footer-bottom span {
        display: block;
        margin-top: 7px;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
      }
    }