:root {
      --aisitex-blue: #1769a8;
      --aisitex-pink: #d73568;
      --aisitex-ink: #111820;
      --aisitex-stage: #0b1118;
      --aisitex-paper: #f4f6f7;
      --aisitex-line: #cbd3d8;
      --aisitex-muted: #5e6a73;
      --aisitex-white: #fff;
      --aisitex-max: 1240px;
      --aisitex-radius: 4px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--aisitex-ink);
      background: var(--aisitex-paper);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
      line-height: 1.65;
    }

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

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

    button,
    a {
      -webkit-tap-highlight-color: transparent;
    }

    :focus-visible {
      outline: 3px solid #f5a4bc;
      outline-offset: 4px;
    }

    .aisitex-site-header {
      position: relative;
      z-index: 20;
      background: var(--aisitex-stage);
      color: var(--aisitex-white);
      border-bottom: 1px solid rgba(255,255,255,.14);
    }

    .aisitex-header-inner {
      width: min(calc(100% - 48px), var(--aisitex-max));
      min-height: 78px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 36px;
    }

    .aisitex-brand {
      display: inline-flex;
      align-items: center;
      gap: 14px;
      min-width: 210px;
    }

    .aisitex-brand img {
      width: 42px;
      height: 42px;
      object-fit: contain;
    }

    .aisitex-brand-text {
      display: grid;
      gap: 1px;
      line-height: 1.2;
    }

    .aisitex-brand-name {
      font-size: 17px;
      font-weight: 700;
      letter-spacing: .06em;
    }

    .aisitex-brand-caption {
      color: #9baab4;
      font-size: 10px;
      letter-spacing: .16em;
      text-transform: uppercase;
    }

    .aisitex-nav {
      display: flex;
      align-items: stretch;
      gap: 8px;
    }

    .aisitex-nav-link {
      position: relative;
      display: inline-flex;
      align-items: center;
      min-height: 78px;
      padding: 0 18px;
      color: #b9c4ca;
      font-size: 14px;
      transition: color .25s ease;
    }

    .aisitex-nav-link::after {
      content: "";
      position: absolute;
      right: 18px;
      bottom: 0;
      left: 18px;
      height: 3px;
      background: var(--aisitex-pink);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform .25s ease;
    }

    .aisitex-nav-link:hover,
    .aisitex-nav-link.active {
      color: var(--aisitex-white);
    }

    .aisitex-nav-link.active::after,
    .aisitex-nav-link:hover::after {
      transform: scaleX(1);
    }

    .aisitex-nav-toggle {
      display: none;
      width: 44px;
      height: 40px;
      padding: 8px;
      border: 1px solid rgba(255,255,255,.28);
      border-radius: var(--aisitex-radius);
      color: white;
      background: transparent;
      cursor: pointer;
    }

    .aisitex-nav-toggle span {
      display: block;
      width: 100%;
      height: 2px;
      margin: 5px 0;
      background: currentColor;
    }

    .aisitex-hero {
      position: relative;
      min-height: min(780px, calc(100vh - 78px));
      overflow: hidden;
      color: var(--aisitex-white);
      background: var(--aisitex-stage);
    }

    .aisitex-hero-media {
      position: absolute;
      inset: 0;
      overflow: hidden;
    }

    .aisitex-hero-media::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(5,11,17,.88) 0%, rgba(5,11,17,.42) 35%, rgba(5,11,17,.06) 70%),
        linear-gradient(0deg, rgba(5,11,17,.7) 0%, transparent 48%);
      pointer-events: none;
    }

    .aisitex-hero-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center 58%;
      transform: scale(1.04);
      transition: transform 1.2s ease-out;
    }

    .aisitex-hero:hover .aisitex-hero-image {
      transform: scale(1.07) translateX(1%);
    }

    .aisitex-hero-grid {
      position: relative;
      z-index: 1;
      width: min(calc(100% - 48px), var(--aisitex-max));
      min-height: inherit;
      margin: 0 auto;
      display: grid;
      grid-template-columns: minmax(120px, 1fr) minmax(380px, 2fr) minmax(220px, 1fr);
      align-items: center;
      gap: 28px;
      padding: 84px 0 88px;
    }

    .aisitex-hero-index {
      align-self: start;
      padding-top: 8px;
      color: #aab8c0;
      font-size: 11px;
      letter-spacing: .16em;
      writing-mode: vertical-rl;
    }

    .aisitex-hero-index::before {
      content: "";
      display: block;
      width: 1px;
      height: 54px;
      margin: 0 auto 16px;
      background: var(--aisitex-pink);
    }

    .aisitex-hero-copy {
      max-width: 650px;
      align-self: end;
      padding-bottom: 18px;
    }

    .aisitex-kicker {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 20px;
      color: #a9cce5;
      font-size: 11px;
      font-weight: 700;
      letter-spacing: .18em;
      text-transform: uppercase;
    }

    .aisitex-kicker::before {
      content: "";
      width: 30px;
      height: 2px;
      background: var(--aisitex-pink);
    }

    .aisitex-hero-title {
      max-width: 610px;
      margin: 0;
      font-size: clamp(42px, 5.5vw, 78px);
      font-weight: 700;
      letter-spacing: .02em;
      line-height: 1.1;
    }

    .aisitex-hero-lead {
      max-width: 520px;
      margin: 26px 0 0;
      color: #d3dde2;
      font-size: 16px;
      line-height: 1.9;
    }

    .aisitex-hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 34px;
    }

    .aisitex-button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 48px;
      padding: 0 21px;
      border: 1px solid transparent;
      border-radius: var(--aisitex-radius);
      font-size: 14px;
      font-weight: 700;
      transition: background .25s ease, border-color .25s ease, color .25s ease, transform .25s ease;
    }

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

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

    .aisitex-button-primary:hover {
      background: #2183c7;
    }

    .aisitex-button-quiet {
      color: var(--aisitex-white);
      border-color: rgba(255,255,255,.46);
      background: rgba(11,17,24,.25);
    }

    .aisitex-button-quiet:hover {
      border-color: var(--aisitex-white);
      background: rgba(255,255,255,.1);
    }

    .aisitex-icon {
      width: 17px;
      height: 17px;
      flex: 0 0 auto;
      fill: none;
      stroke: currentColor;
      stroke-width: 1.8;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .aisitex-hero-status {
      align-self: end;
      justify-self: end;
      width: min(100%, 250px);
      padding: 17px 18px;
      border-top: 1px solid rgba(255,255,255,.42);
      border-bottom: 1px solid rgba(255,255,255,.18);
      color: #dce7ed;
      font-size: 12px;
      letter-spacing: .06em;
    }

    .aisitex-status-row {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 9px;
      color: #8ebada;
      font-size: 10px;
      letter-spacing: .14em;
      text-transform: uppercase;
    }

    .aisitex-status-dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--aisitex-pink);
      box-shadow: 0 0 0 5px rgba(215,53,104,.15);
      animation: aisitex-pulse 2.8s ease-in-out infinite;
    }

    @keyframes aisitex-pulse {
      0%, 100% { opacity: .65; }
      50% { opacity: 1; }
    }

    .aisitex-section {
      width: min(calc(100% - 48px), var(--aisitex-max));
      margin: 0 auto;
      padding: 118px 0;
    }

    .aisitex-section-heading {
      display: grid;
      grid-template-columns: minmax(160px, .75fr) minmax(0, 2fr);
      gap: 44px;
      align-items: start;
      margin-bottom: 58px;
    }

    .aisitex-section-label {
      margin: 4px 0 0;
      color: var(--aisitex-blue);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: .17em;
      text-transform: uppercase;
    }

    .aisitex-section-label::before {
      content: "";
      display: inline-block;
      width: 26px;
      height: 2px;
      margin: 0 10px 3px 0;
      background: var(--aisitex-pink);
    }

    .aisitex-section-title {
      max-width: 700px;
      margin: 0;
      font-size: clamp(30px, 4vw, 52px);
      line-height: 1.22;
      letter-spacing: .01em;
    }

    .aisitex-section-intro {
      max-width: 650px;
      margin: 18px 0 0;
      color: var(--aisitex-muted);
      font-size: 15px;
    }

    .aisitex-route {
      position: relative;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0;
      border-top: 1px solid var(--aisitex-line);
      border-bottom: 1px solid var(--aisitex-line);
    }

    .aisitex-route::before {
      content: "";
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 1px;
      background: var(--aisitex-line);
    }

    .aisitex-route-item {
      position: relative;
      min-height: 300px;
      padding: 38px 48px 42px;
    }

    .aisitex-route-item:first-child {
      padding-left: 0;
    }

    .aisitex-route-item:last-child {
      padding-right: 0;
      padding-left: 72px;
    }

    .aisitex-route-stage {
      color: var(--aisitex-pink);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: .18em;
    }

    .aisitex-route-title {
      max-width: 360px;
      margin: 28px 0 13px;
      font-size: 25px;
      line-height: 1.35;
    }

    .aisitex-route-detail {
      max-width: 390px;
      margin: 0;
      color: var(--aisitex-muted);
      font-size: 14px;
    }

    .aisitex-route-link {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      margin-top: 28px;
      color: var(--aisitex-blue);
      font-size: 13px;
      font-weight: 700;
    }

    .aisitex-route-link:hover {
      color: var(--aisitex-pink);
    }

    .aisitex-route-arrow {
      position: absolute;
      top: 50%;
      left: 50%;
      z-index: 1;
      display: grid;
      width: 42px;
      height: 42px;
      place-items: center;
      border: 1px solid var(--aisitex-line);
      border-radius: 50%;
      color: var(--aisitex-blue);
      background: var(--aisitex-paper);
      transform: translate(-50%, -50%);
    }

    .aisitex-capability {
      padding-top: 20px;
      background: var(--aisitex-stage);
      color: var(--aisitex-white);
    }

    .aisitex-capability .aisitex-section {
      padding-top: 112px;
      padding-bottom: 116px;
    }

    .aisitex-capability .aisitex-section-label {
      color: #8ebada;
    }

    .aisitex-capability .aisitex-section-intro {
      color: #aab8c0;
    }

    .aisitex-capability-map {
      position: relative;
      display: grid;
      grid-template-columns: minmax(190px, 1fr) minmax(260px, 340px) minmax(190px, 1fr);
      grid-template-rows: repeat(3, auto);
      align-items: center;
      gap: 28px 44px;
      min-height: 500px;
      padding: 54px 0;
    }

    .aisitex-capability-map::before,
    .aisitex-capability-map::after {
      content: "";
      position: absolute;
      top: 50%;
      height: 1px;
      width: calc(50% - 170px);
      background: linear-gradient(90deg, transparent, rgba(142,186,218,.5));
    }

    .aisitex-capability-map::before {
      left: 0;
    }

    .aisitex-capability-map::after {
      right: 0;
      transform: rotate(180deg);
    }

    .aisitex-phone {
      position: relative;
      z-index: 2;
      grid-column: 2;
      grid-row: 1 / 4;
      justify-self: center;
      width: min(100%, 265px);
      padding: 10px;
      border: 1px solid rgba(255,255,255,.45);
      border-radius: 30px;
      background: #151e26;
      box-shadow: 20px 24px 0 rgba(0,0,0,.18);
    }

    .aisitex-phone img {
      width: 100%;
      border-radius: 22px;
    }

    .aisitex-node {
      position: relative;
      z-index: 3;
      max-width: 235px;
      padding: 14px 0 16px 17px;
      border-left: 2px solid var(--aisitex-blue);
    }

    .aisitex-node:nth-of-type(2),
    .aisitex-node:nth-of-type(4) {
      justify-self: end;
      border-left: 0;
      border-right: 2px solid var(--aisitex-pink);
      padding: 14px 17px 16px 0;
      text-align: right;
    }

    .aisitex-node:nth-of-type(2) {
      grid-column: 1;
      grid-row: 1;
    }

    .aisitex-node:nth-of-type(3) {
      grid-column: 1;
      grid-row: 3;
    }

    .aisitex-node:nth-of-type(4) {
      grid-column: 3;
      grid-row: 1;
    }

    .aisitex-node:nth-of-type(5) {
      grid-column: 3;
      grid-row: 3;
    }

    .aisitex-node:nth-of-type(6) {
      grid-column: 1 / 4;
      grid-row: 2;
      justify-self: center;
      max-width: 310px;
      padding: 14px 22px;
      border: 1px solid rgba(255,255,255,.3);
      text-align: center;
    }

    .aisitex-node-label {
      display: block;
      color: #fff;
      font-size: 17px;
      font-weight: 700;
    }

    .aisitex-node-role {
      display: block;
      margin-top: 3px;
      color: #84b6d8;
      font-size: 10px;
      letter-spacing: .12em;
    }

    .aisitex-node-detail {
      margin: 8px 0 0;
      color: #aab8c0;
      font-size: 12px;
      line-height: 1.7;
    }

    .aisitex-scenes {
      background: #fff;
    }

    .aisitex-scene-grid {
      display: grid;
      grid-template-columns: 1.15fr .9fr 1.1fr;
      align-items: end;
      gap: 18px;
    }

    .aisitex-scene {
      position: relative;
      min-height: 360px;
      overflow: hidden;
      color: #fff;
      background: var(--aisitex-stage);
    }

    .aisitex-scene:nth-child(2) {
      min-height: 430px;
    }

    .aisitex-scene img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .6s ease;
    }

    .aisitex-scene:hover img {
      transform: scale(1.05);
    }

    .aisitex-scene::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(0deg, rgba(5,11,17,.84), transparent 60%);
    }

    .aisitex-scene-copy {
      position: absolute;
      z-index: 1;
      right: 24px;
      bottom: 24px;
      left: 24px;
    }

    .aisitex-scene-label {
      color: #f0a1ba;
      font-size: 11px;
      font-weight: 700;
      letter-spacing: .16em;
    }

    .aisitex-scene-title {
      margin: 8px 0 7px;
      font-size: 21px;
      line-height: 1.35;
    }

    .aisitex-scene-detail {
      margin: 0;
      color: #d4dde2;
      font-size: 12px;
    }

    .aisitex-decision {
      background: var(--aisitex-paper);
      border-top: 1px solid var(--aisitex-line);
    }

    .aisitex-decision-table {
      width: 100%;
      border-collapse: collapse;
      border-top: 2px solid var(--aisitex-ink);
      font-size: 14px;
    }

    .aisitex-decision-table th,
    .aisitex-decision-table td {
      padding: 22px 20px;
      border-bottom: 1px solid var(--aisitex-line);
      text-align: left;
      vertical-align: middle;
    }

    .aisitex-decision-table th {
      color: var(--aisitex-muted);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: .12em;
    }

    .aisitex-decision-table td:first-child {
      width: 43%;
      font-weight: 700;
    }

    .aisitex-decision-table td:nth-child(2) {
      color: var(--aisitex-muted);
    }

    .aisitex-decision-table tbody tr {
      transition: background .2s ease;
    }

    .aisitex-decision-table tbody tr:hover,
    .aisitex-decision-table tbody tr:focus-within {
      background: #e9eef1;
    }

    .aisitex-table-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--aisitex-blue);
      font-weight: 700;
      white-space: nowrap;
    }

    .aisitex-table-link:hover {
      color: var(--aisitex-pink);
    }

    .aisitex-final {
      color: var(--aisitex-white);
      background: var(--aisitex-stage);
    }

    .aisitex-final-inner {
      width: min(calc(100% - 48px), var(--aisitex-max));
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1.3fr .7fr;
      gap: 44px;
      align-items: center;
      padding: 86px 0;
    }

    .aisitex-final-title {
      max-width: 700px;
      margin: 0;
      font-size: clamp(28px, 4vw, 48px);
      line-height: 1.25;
    }

    .aisitex-final-copy {
      margin: 16px 0 0;
      color: #aab8c0;
      font-size: 14px;
    }

    .aisitex-final-actions {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 12px;
    }

    .aisitex-site-footer {
      color: #aab8c0;
      background: #070b10;
      border-top: 1px solid rgba(255,255,255,.1);
    }

    .aisitex-footer-inner {
      width: min(calc(100% - 48px), var(--aisitex-max));
      min-height: 92px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      font-size: 12px;
    }

    .aisitex-footer-brand {
      color: #e1e8ec;
      font-weight: 700;
    }

    .aisitex-footer-note {
      margin: 0;
      text-align: right;
    }

    @media (max-width: 900px) {
      .aisitex-header-inner,
      .aisitex-hero-grid,
      .aisitex-section,
      .aisitex-final-inner,
      .aisitex-footer-inner {
        width: min(calc(100% - 36px), var(--aisitex-max));
      }

      .aisitex-hero-grid {
        grid-template-columns: 54px 1fr;
      }

      .aisitex-hero-status {
        grid-column: 2;
        justify-self: start;
        align-self: start;
        margin-top: 28px;
      }

      .aisitex-section-heading {
        grid-template-columns: 1fr;
        gap: 18px;
      }

      .aisitex-capability-map {
        grid-template-columns: 1fr 250px 1fr;
        gap: 22px;
      }

      .aisitex-node:nth-of-type(2),
      .aisitex-node:nth-of-type(4) {
        max-width: 190px;
      }

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

      .aisitex-final-actions {
        justify-content: flex-start;
      }
    }

    @media (max-width: 680px) {
      .aisitex-header-inner {
        min-height: 68px;
      }

      .aisitex-brand {
        min-width: 0;
      }

      .aisitex-brand img {
        width: 36px;
        height: 36px;
      }

      .aisitex-brand-name {
        font-size: 15px;
      }

      .aisitex-brand-caption {
        display: none;
      }

      .aisitex-nav-toggle {
        display: block;
      }

      .aisitex-nav {
        position: absolute;
        top: 68px;
        right: 18px;
        left: 18px;
        display: block;
        padding: 8px;
        background: #111a22;
        border: 1px solid rgba(255,255,255,.16);
      }

      .aisitex-nav[hidden] {
        display: none;
      }

      .aisitex-nav-link {
        display: flex;
        min-height: 48px;
        padding: 0 14px;
      }

      .aisitex-nav-link::after {
        right: 14px;
        left: auto;
        width: 3px;
        height: 22px;
        top: 13px;
        bottom: auto;
        transform: scaleY(0);
        transform-origin: top;
      }

      .aisitex-nav-link.active::after,
      .aisitex-nav-link:hover::after {
        transform: scaleY(1);
      }

      .aisitex-hero {
        min-height: 720px;
      }

      .aisitex-hero-image {
        object-position: 60% center;
      }

      .aisitex-hero-grid {
        width: min(calc(100% - 36px), var(--aisitex-max));
        grid-template-columns: 1fr;
        align-content: end;
        padding: 70px 0 48px;
      }

      .aisitex-hero-index {
        display: none;
      }

      .aisitex-hero-copy {
        align-self: auto;
      }

      .aisitex-hero-title {
        font-size: 42px;
      }

      .aisitex-hero-lead {
        font-size: 14px;
      }

      .aisitex-hero-status {
        grid-column: auto;
        width: 100%;
        margin-top: 4px;
      }

      .aisitex-section {
        width: min(calc(100% - 36px), var(--aisitex-max));
        padding: 78px 0;
      }

      .aisitex-section-heading {
        margin-bottom: 38px;
      }

      .aisitex-section-title {
        font-size: 32px;
      }

      .aisitex-route {
        display: block;
      }

      .aisitex-route::before {
        top: 50%;
        right: 0;
        bottom: auto;
        left: 0;
        width: auto;
        height: 1px;
      }

      .aisitex-route-item,
      .aisitex-route-item:first-child,
      .aisitex-route-item:last-child {
        min-height: 0;
        padding: 32px 0 42px;
      }

      .aisitex-route-item:last-child {
        padding-top: 52px;
      }

      .aisitex-route-arrow {
        top: 50%;
      }

      .aisitex-capability .aisitex-section {
        padding-top: 78px;
        padding-bottom: 82px;
      }

      .aisitex-capability-map {
        display: flex;
        flex-direction: column;
        gap: 22px;
        min-height: 0;
        padding: 0;
      }

      .aisitex-capability-map::before,
      .aisitex-capability-map::after {
        display: none;
      }

      .aisitex-phone {
        order: -1;
        width: min(72vw, 250px);
        margin-bottom: 8px;
      }

      .aisitex-node,
      .aisitex-node:nth-of-type(2),
      .aisitex-node:nth-of-type(4),
      .aisitex-node:nth-of-type(6) {
        width: 100%;
        max-width: none;
        padding: 14px 0 14px 16px;
        border-right: 0;
        border-left: 2px solid var(--aisitex-blue);
        text-align: left;
      }

      .aisitex-node:nth-of-type(4),
      .aisitex-node:nth-of-type(6) {
        border-left-color: var(--aisitex-pink);
      }

      .aisitex-scene-grid {
        grid-template-columns: 1fr;
        gap: 14px;
      }

      .aisitex-scene,
      .aisitex-scene:nth-child(2) {
        min-height: 300px;
      }

      .aisitex-decision-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
      }

      .aisitex-decision-table th,
      .aisitex-decision-table td {
        padding: 18px 14px;
      }

      .aisitex-decision-table td:first-child {
        width: auto;
      }

      .aisitex-final-inner,
      .aisitex-footer-inner {
        width: min(calc(100% - 36px), var(--aisitex-max));
      }

      .aisitex-final-inner {
        padding: 70px 0;
      }

      .aisitex-footer-inner {
        min-height: 110px;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        gap: 8px;
      }

      .aisitex-footer-note {
        text-align: left;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        scroll-behavior: auto !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
      }
    }

.aisitex-site-header {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
    line-height: 1.65;
    color: #111820;
}

.aisitex-site-header, .aisitex-site-header *{
      box-sizing: border-box;
    }

.aisitex-site-header img{
      display: block;
      max-width: 100%;
    }

.aisitex-site-header a{
      color: inherit;
      text-decoration: none;
    }

.aisitex-site-header button, .aisitex-site-header a{
      -webkit-tap-highlight-color: transparent;
    }

.aisitex-site-header, .aisitex-site-header :focus-visible{
      outline: 3px solid #f5a4bc;
      outline-offset: 4px;
    }

.aisitex-site-header{
      position: relative;
      z-index: 20;
      background: #0b1118;
      color: #fff;
      border-bottom: 1px solid rgba(255,255,255,.14);
    }

.aisitex-site-header .aisitex-header-inner{
      width: min(calc(100% - 48px), 1240px);
      min-height: 78px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 36px;
    }

.aisitex-site-header .aisitex-brand{
      display: inline-flex;
      align-items: center;
      gap: 14px;
      min-width: 210px;
    }

.aisitex-site-header .aisitex-brand img{
      width: 42px;
      height: 42px;
      object-fit: contain;
    }

.aisitex-site-header .aisitex-brand-text{
      display: grid;
      gap: 1px;
      line-height: 1.2;
    }

.aisitex-site-header .aisitex-brand-name{
      font-size: 17px;
      font-weight: 700;
      letter-spacing: .06em;
    }

.aisitex-site-header .aisitex-brand-caption{
      color: #9baab4;
      font-size: 10px;
      letter-spacing: .16em;
      text-transform: uppercase;
    }

.aisitex-site-header .aisitex-nav{
      display: flex;
      align-items: stretch;
      gap: 8px;
    }

.aisitex-site-header .aisitex-nav-link{
      position: relative;
      display: inline-flex;
      align-items: center;
      min-height: 78px;
      padding: 0 18px;
      color: #b9c4ca;
      font-size: 14px;
      transition: color .25s ease;
    }

.aisitex-site-header .aisitex-nav-link::after{
      content: "";
      position: absolute;
      right: 18px;
      bottom: 0;
      left: 18px;
      height: 3px;
      background: #d73568;
      transform: scaleX(0);
      transform-origin: left;
      transition: transform .25s ease;
    }

.aisitex-site-header .aisitex-nav-link:hover, .aisitex-site-header .aisitex-nav-link.active{
      color: #fff;
    }

.aisitex-site-header .aisitex-nav-link.active::after, .aisitex-site-header .aisitex-nav-link:hover::after{
      transform: scaleX(1);
    }

.aisitex-site-header .aisitex-nav-toggle{
      display: none;
      width: 44px;
      height: 40px;
      padding: 8px;
      border: 1px solid rgba(255,255,255,.28);
      border-radius: 4px;
      color: white;
      background: transparent;
      cursor: pointer;
    }

.aisitex-site-header .aisitex-nav-toggle span{
      display: block;
      width: 100%;
      height: 2px;
      margin: 5px 0;
      background: currentColor;
    }

@media (max-width: 900px){.aisitex-site-header .aisitex-header-inner{
        width: min(calc(100% - 36px), 1240px);
      }}

@media (max-width: 680px){.aisitex-site-header .aisitex-header-inner{
        min-height: 68px;
      }

.aisitex-site-header .aisitex-brand{
        min-width: 0;
      }

.aisitex-site-header .aisitex-brand img{
        width: 36px;
        height: 36px;
      }

.aisitex-site-header .aisitex-brand-name{
        font-size: 15px;
      }

.aisitex-site-header .aisitex-brand-caption{
        display: none;
      }

.aisitex-site-header .aisitex-nav-toggle{
        display: block;
      }

.aisitex-site-header .aisitex-nav{
        position: absolute;
        top: 68px;
        right: 18px;
        left: 18px;
        display: block;
        padding: 8px;
        background: #111a22;
        border: 1px solid rgba(255,255,255,.16);
      }

.aisitex-site-header .aisitex-nav[hidden]{
        display: none;
      }

.aisitex-site-header .aisitex-nav-link{
        display: flex;
        min-height: 48px;
        padding: 0 14px;
      }

.aisitex-site-header .aisitex-nav-link::after{
        right: 14px;
        left: auto;
        width: 3px;
        height: 22px;
        top: 13px;
        bottom: auto;
        transform: scaleY(0);
        transform-origin: top;
      }

.aisitex-site-header .aisitex-nav-link.active::after, .aisitex-site-header .aisitex-nav-link:hover::after{
        transform: scaleY(1);
      }}

@media (prefers-reduced-motion: reduce){.aisitex-site-header, .aisitex-site-header *, .aisitex-site-header::before, .aisitex-site-header *::before, .aisitex-site-header::after, .aisitex-site-header *::after{
        scroll-behavior: auto !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
      }}

.aisitex-site-footer {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
    line-height: 1.65;
    color: #111820;
}

.aisitex-site-footer, .aisitex-site-footer *{
      box-sizing: border-box;
    }

.aisitex-site-footer, .aisitex-site-footer :focus-visible{
      outline: 3px solid #f5a4bc;
      outline-offset: 4px;
    }

.aisitex-site-footer{
      color: #aab8c0;
      background: #070b10;
      border-top: 1px solid rgba(255,255,255,.1);
    }

.aisitex-site-footer .aisitex-footer-inner{
      width: min(calc(100% - 48px), 1240px);
      min-height: 92px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      font-size: 12px;
    }

.aisitex-site-footer .aisitex-footer-brand{
      color: #e1e8ec;
      font-weight: 700;
    }

.aisitex-site-footer .aisitex-footer-note{
      margin: 0;
      text-align: right;
    }

@media (max-width: 900px){.aisitex-site-footer .aisitex-footer-inner{
        width: min(calc(100% - 36px), 1240px);
      }}

@media (max-width: 680px){.aisitex-site-footer .aisitex-footer-inner{
        width: min(calc(100% - 36px), 1240px);
      }

.aisitex-site-footer .aisitex-footer-inner{
        min-height: 110px;
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        gap: 8px;
      }

.aisitex-site-footer .aisitex-footer-note{
        text-align: left;
      }}

@media (prefers-reduced-motion: reduce){.aisitex-site-footer, .aisitex-site-footer *, .aisitex-site-footer::before, .aisitex-site-footer *::before, .aisitex-site-footer::after, .aisitex-site-footer *::after{
        scroll-behavior: auto !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
      }}


/* Prominent registration entry point */
.aisitex-register-cta {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  min-height: 48px;
  padding: .8rem 1.35rem !important;
  border-radius: 8px;
  background: #2563eb !important;
  border: 1px solid #3b82f6 !important;
  color: #fff !important;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(37, 99, 235, .28) !important;
  text-decoration: none !important;
}
.aisitex-register-cta:hover,
.aisitex-register-cta:focus-visible {
  background: #3b82f6 !important;
  color: #fff !important;
  transform: translateY(-1px);
}
/* Unified dark official visual system */
:root{color-scheme:dark;--aisitex-dark-bg:#0b1118;--aisitex-dark-surface:#111a24;--aisitex-dark-raised:#172331;--aisitex-dark-line:#283544;--aisitex-dark-text:#e6edf3;--aisitex-dark-muted:#9aa8b7;--aisitex-dark-blue:#2563eb;--aisitex-dark-blue-hover:#3b82f6}
html,body{background:#0b1118!important;color:#e6edf3!important}
header,footer,nav,[class*="site-header"],[class*="nav-shell"],[class*="header-shell"],[class*="header-inner"]{background:#0d141d!important;color:#e6edf3!important;border-color:#283544!important}
[class*="hero"],[class*="section"],[class*="card"],[class*="panel"],[class*="strip"],[class*="route"],[class*="feature"],[class*="step"],[class*="support"],[class*="content"],[class*="choice"],[class*="map"],[class*="result"],[class*="intro"],[class*="closing"],[class*="next"],[class*="task"],[class*="path"],[class*="comparison"],[class*="flow"],[class*="evidence"],[class*="frame"],[class*="visual"],[class*="shot"]{background:#111a24!important;color:#e6edf3!important;border-color:#283544!important}
h1,h2,h3,h4,h5,h6{color:#f5f7fa!important}p,li,label,summary,dt,dd{color:#c8d1dc}.aisitex-muted,[class*="muted"],[class*="description"],[class*="lead"],[class*="copy"],[class*="note"],[class*="caption"]{color:#9aa8b7!important}
a{color:#bfdbfe}input,textarea,select{background:#0f1720!important;color:#f3f4f6!important;border-color:#334155!important}
a[class*="primary"],button[class*="primary"],[class*="submit"],[class*="cta"],.aisitex-register-cta{background:#2563eb!important;color:#fff!important;border-color:#3b82f6!important;box-shadow:0 10px 24px #2563eb47!important}a[class*="primary"]:hover,button[class*="primary"]:hover,[class*="submit"]:hover,[class*="cta"]:hover,.aisitex-register-cta:hover{background:#3b82f6!important}
a[class*="secondary"],button[class*="secondary"],[class*="ghost"],[class*="quiet"],[class*="text-link"],[class*="secondary-link"]{background:#172331!important;color:#dbeafe!important;border-color:#3a4a5d!important}
.aisitex-nav-register{color:#dbeafe!important;background:#172331!important;border:1px solid #3a4a5d;border-radius:6px}.aisitex-nav-register:hover,.aisitex-nav-register.active{color:#fff!important;background:#2563eb!important}
/* Navigation registration control sizing */
.aisitex-nav .aisitex-nav-register,.aisitex-main-nav .aisitex-nav-register,.aisitex-primary-nav .aisitex-nav-register,.aisitex-primary-menu .aisitex-nav-register{display:inline-flex!important;align-items:center;justify-content:center;min-height:38px!important;padding:7px 13px!important;border-radius:6px!important;font-size:14px!important;line-height:1.2!important;white-space:nowrap}
/* Shared official dark palette and accessible registration controls */
:root{color-scheme:dark;--aisitex-dark-bg:#0b1118;--aisitex-dark-surface:#111a24;--aisitex-dark-raised:#172331;--aisitex-dark-line:#283544;--aisitex-dark-text:#e6edf3;--aisitex-dark-muted:#9aa8b7;--aisitex-dark-blue:#2563eb;--aisitex-dark-blue-hover:#3b82f6}
html,body{background:#0b1118!important;color:#e6edf3!important}
header,footer,nav,[class*="site-header"],[class*="nav-shell"],[class*="header-shell"],[class*="header-inner"]{background:#0d141d!important;color:#e6edf3!important;border-color:#283544!important}
main,section,article,aside,form,details,fieldset,[class*="hero"],[class*="section"],[class*="card"],[class*="panel"],[class*="strip"],[class*="route"],[class*="feature"],[class*="step"],[class*="support"],[class*="content"],[class*="choice"],[class*="map"],[class*="result"],[class*="intro"],[class*="closing"],[class*="next"],[class*="task"],[class*="path"],[class*="comparison"],[class*="flow"],[class*="evidence"],[class*="frame"],[class*="visual"],[class*="shot"]{background-color:#111a24!important;color:#e6edf3!important;border-color:#283544!important}
h1,h2,h3,h4,h5,h6{color:#f5f7fa!important}p,li,label,summary,dt,dd{color:#c8d1dc}[class*="muted"],[class*="description"],[class*="lead"],[class*="copy"],[class*="note"],[class*="caption"]{color:#9aa8b7!important}
input,textarea,select{background:#0f1720!important;color:#f3f4f6!important;border-color:#334155!important}input::placeholder,textarea::placeholder{color:#718096!important}
a[class*="primary"],button[class*="primary"],[class*="submit"],[class*="cta"],.aisitex-register-cta{background:#2563eb!important;color:#fff!important;border-color:#3b82f6!important;box-shadow:0 10px 24px #2563eb47!important}
a[class*="primary"]:hover,button[class*="primary"]:hover,[class*="submit"]:hover,[class*="cta"]:hover,.aisitex-register-cta:hover{background:#3b82f6!important}
a[class*="secondary"],button[class*="secondary"],[class*="ghost"],[class*="quiet"],[class*="text-link"],[class*="secondary-link"]{background:#172331!important;color:#dbeafe!important;border-color:#3a4a5d!important}
.aisitex-nav-register{display:inline-flex!important;align-items:center;justify-content:center;min-height:38px!important;padding:7px 13px!important;border-radius:6px!important;font-size:14px!important;line-height:1.2!important;white-space:nowrap;color:#dbeafe!important;background:#172331!important;border:1px solid #3a4a5d}.aisitex-nav-register:hover,.aisitex-nav-register.active{background:#2563eb!important;color:#fff!important}
.aisitex-register-cta{display:inline-flex!important;align-items:center;justify-content:center;min-height:48px;padding:12px 22px!important;border-radius:7px;font-weight:750;text-decoration:none!important}