:root {
      --oc-blue: #0b4aa2;
      --oc-blue-dark: #07306f;
      --oc-blue-soft: #eaf3ff;
      --oc-yellow: #f8b932;
      --oc-yellow-soft: #fff5dc;
      --oc-teal: #0f766e;
      --oc-ink: #172033;
      --oc-muted: #5d6b82;
      --oc-line: #d8e0ed;
      --oc-bg: #f6f8fc;
      --oc-white: #ffffff;
      --oc-shadow: 0 16px 40px rgba(18, 39, 74, 0.12);
      --oc-font: "Be Vietnam Pro", "Inter", "Segoe UI", Arial, Helvetica, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--oc-ink);
      font-family: var(--oc-font);
      background: var(--oc-white);
      line-height: 1.5;
    }

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

    button,
    input {
      font: inherit;
    }

    .onchinese-home {
      min-height: 100vh;
      overflow-x: hidden;
    }

    .oc-container {
      width: min(1180px, calc(100% - 32px));
      margin: 0 auto;
    }

    .oc-topbar {
      border-bottom: 1px solid var(--oc-line);
      background: #fbfcff;
    }

    .oc-topbar__inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      min-height: 38px;
      gap: 18px;
      font-size: 13px;
      color: var(--oc-muted);
    }

    .oc-audience {
      display: flex;
      align-items: center;
      gap: 18px;
      white-space: nowrap;
    }

    .oc-audience a:first-child {
      color: var(--oc-blue);
      font-weight: 700;
    }

    .oc-support {
      display: flex;
      align-items: center;
      gap: 14px;
      white-space: nowrap;
    }

    .oc-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 255, 255, 0.96);
      border-bottom: 1px solid rgba(216, 224, 237, 0.9);
      backdrop-filter: blur(12px);
    }

    .oc-nav {
      display: grid;
      grid-template-columns: auto minmax(220px, 1fr) auto;
      align-items: center;
      gap: 18px;
      min-height: 74px;
    }

    .oc-nav--shared {
      grid-template-columns: 230px minmax(420px, 1fr) auto;
      gap: 28px;
    }

    .oc-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-width: 0;
    }

    .oc-logo img {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      object-fit: cover;
      box-shadow: 0 0 0 2px #fff, 0 0 0 4px rgba(11, 74, 162, 0.12);
    }

    .oc-logo strong {
      display: block;
      color: var(--oc-blue);
      font-size: 24px;
      line-height: 1;
    }

    .oc-logo span {
      display: block;
      color: var(--oc-muted);
      font-size: 12px;
      margin-top: 3px;
    }

    .oc-explore {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      height: 42px;
      padding: 0 16px;
      border: 1px solid var(--oc-blue);
      border-radius: 6px;
      color: var(--oc-blue);
      background: #fff;
      font-weight: 700;
      cursor: pointer;
    }

    .oc-explore__icon {
      width: 18px;
      height: 18px;
      display: grid;
      place-items: center;
      border-radius: 4px;
      background: var(--oc-blue-soft);
      color: var(--oc-blue);
      font-size: 13px;
      font-weight: 700;
    }

    .oc-main-links {
      display: flex;
      align-items: center;
      gap: 22px;
      color: #2d3850;
      font-size: 14px;
      min-width: 0;
    }

    .oc-main-links a {
      position: relative;
      display: inline-flex;
      align-items: center;
      white-space: nowrap;
    }

    .oc-main-links a[aria-current="page"] {
      color: var(--oc-blue);
      font-weight: 800;
    }

    .oc-main-links a[aria-current="page"]::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: -9px;
      height: 3px;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--oc-blue), var(--oc-yellow));
    }

    .oc-menu-item {
      position: relative;
      display: inline-flex;
      align-items: center;
    }

    .oc-menu-item--has-children > a::before {
      content: "";
      width: 6px;
      height: 6px;
      margin-left: 7px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      order: 2;
      transform: rotate(45deg) translateY(-2px);
    }

    .oc-submenu {
      position: absolute;
      top: calc(100% + 16px);
      left: 50%;
      z-index: 30;
      display: grid;
      min-width: 210px;
      padding: 10px;
      border: 1px solid rgba(216, 224, 237, 0.95);
      border-radius: 8px;
      background: #fff;
      box-shadow: 0 18px 40px rgba(18, 39, 74, 0.16);
      opacity: 0;
      pointer-events: none;
      transform: translate(-50%, 8px);
      transition: opacity 180ms ease, transform 180ms ease;
    }

    .oc-submenu a {
      min-height: 36px;
      padding: 8px 10px;
      border-radius: 6px;
    }

    .oc-submenu a:hover {
      background: var(--oc-blue-soft);
    }

    .oc-submenu a[aria-current="page"]::after {
      content: none;
    }

    .oc-menu-item:hover .oc-submenu,
    .oc-menu-item:focus-within .oc-submenu {
      opacity: 1;
      pointer-events: auto;
      transform: translate(-50%, 0);
    }

    .oc-search {
      display: flex;
      align-items: center;
      min-width: 240px;
      border: 1px solid var(--oc-line);
      border-radius: 6px;
      overflow: hidden;
      background: #fff;
    }

    .oc-search input {
      width: 100%;
      min-width: 0;
      border: 0;
      outline: 0;
      padding: 10px 12px;
      color: var(--oc-ink);
    }

    .oc-search button {
      width: 44px;
      height: 42px;
      border: 0;
      background: var(--oc-blue);
      color: #fff;
      cursor: pointer;
      font-size: 18px;
    }

    .oc-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      justify-content: flex-end;
      white-space: nowrap;
    }

    .oc-login {
      color: var(--oc-blue);
      font-weight: 700;
      font-size: 14px;
    }

    .oc-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 20px;
      border-radius: 6px;
      border: 1px solid transparent;
      font-weight: 700;
      cursor: pointer;
      transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
    }

    .oc-btn:hover {
      transform: translateY(-1px);
      box-shadow: 0 10px 24px rgba(11, 74, 162, 0.16);
    }

    .oc-btn--primary {
      background: var(--oc-blue);
      color: #fff;
      border-color: var(--oc-blue);
    }

    .oc-btn--yellow {
      background: var(--oc-yellow);
      color: #1c2b47;
      border-color: #e3a51d;
    }

    .oc-btn--outline {
      background: #fff;
      color: var(--oc-blue);
      border-color: var(--oc-blue);
    }

    .oc-mobile-menu {
      display: none;
      width: 44px;
      height: 42px;
      border: 1px solid var(--oc-line);
      background: #fff;
      border-radius: 6px;
      color: var(--oc-blue);
      font-size: 22px;
      cursor: pointer;
    }

    .oc-launch-banner {
      background: #09295f;
      color: #fff;
      border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    }

    .oc-launch-banner__inner {
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
      gap: 42px;
      align-items: center;
      min-height: 420px;
      padding: 46px 0;
    }

    .oc-banner-label {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      width: fit-content;
      min-height: 34px;
      padding: 0 12px;
      margin-bottom: 18px;
      border-radius: 999px;
      background: rgba(248, 185, 50, 0.14);
      color: #ffd978;
      border: 1px solid rgba(248, 185, 50, 0.42);
      font-weight: 800;
      font-size: 13px;
    }

    .oc-banner-label::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--oc-yellow);
    }

    .oc-launch-banner h1 {
      max-width: 650px;
      margin: 0;
      color: #fff;
      font-size: clamp(38px, 5vw, 62px);
      line-height: 1.05;
      letter-spacing: 0;
    }

    .oc-launch-banner h1 span {
      color: var(--oc-yellow);
    }

    .oc-launch-banner p {
      max-width: 620px;
      margin: 18px 0 26px;
      color: #d9e7ff;
      font-size: clamp(17px, 2vw, 21px);
    }

    .oc-banner-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 22px;
    }

    .oc-banner-points {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 10px;
      max-width: 650px;
    }

    .oc-banner-points span {
      min-height: 52px;
      display: flex;
      align-items: center;
      padding: 10px 12px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.08);
      color: #ecf4ff;
      border: 1px solid rgba(255, 255, 255, 0.12);
      font-weight: 700;
      font-size: 13px;
    }

    .oc-edu-visual {
      position: relative;
      min-height: 390px;
      display: grid;
      place-items: center;
      isolation: isolate;
    }

    .oc-edu-visual::before,
    .oc-edu-visual::after {
      content: "";
      position: absolute;
      left: 50%;
      top: 50%;
      width: min(600px, 96%);
      height: 360px;
      border-radius: 50%;
      border: 1px dashed rgba(255, 255, 255, 0.22);
      transform: translate(-50%, -50%) rotate(0deg);
      pointer-events: none;
      z-index: 0;
      animation: ocOrbitRing 34s linear infinite;
    }

    .oc-edu-visual::after {
      width: min(480px, 80%);
      height: 292px;
      border-color: rgba(248, 185, 50, 0.28);
      animation-duration: 26s;
      animation-direction: reverse;
    }

    .oc-edu-glow {
      position: absolute;
      width: min(480px, 90%);
      aspect-ratio: 1;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(248, 185, 50, 0.32) 0%, rgba(67, 150, 255, 0.18) 42%, rgba(255, 255, 255, 0.04) 70%);
      border: 1px solid rgba(255, 255, 255, 0.16);
      animation: ocGlowPulse 5.6s ease-in-out infinite;
    }

    .oc-edu-card {
      position: relative;
      width: min(470px, 100%);
      min-height: 330px;
      padding: 26px;
      border: 1px solid rgba(255, 255, 255, 0.24);
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.96);
      color: var(--oc-ink);
      box-shadow: 0 24px 56px rgba(0, 0, 0, 0.28);
      overflow: hidden;
      z-index: 1;
      animation: ocCardFloat 6s ease-in-out infinite;
    }

    .oc-edu-card::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(11, 74, 162, 0.08), rgba(248, 185, 50, 0.12));
      pointer-events: none;
    }

    .oc-edu-card::after {
      content: "";
      position: absolute;
      top: -40%;
      left: -20%;
      width: 42%;
      height: 190%;
      background: linear-gradient(90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.42), rgba(255, 255, 255, 0));
      transform: rotate(18deg) translateX(-160%);
      animation: ocCardShine 7s ease-in-out infinite;
      pointer-events: none;
      z-index: 1;
    }

    .oc-edu-card__head {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      margin-bottom: 22px;
      z-index: 1;
    }

    .oc-edu-seal {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .oc-edu-seal img {
      width: 54px;
      height: 54px;
      border-radius: 50%;
      object-fit: cover;
      box-shadow: 0 0 0 4px #fff, 0 8px 22px rgba(11, 74, 162, 0.18);
      flex: 0 0 auto;
    }

    .oc-edu-seal strong {
      display: block;
      color: var(--oc-blue);
      font-size: 18px;
      line-height: 1.15;
    }

    .oc-edu-seal span {
      display: block;
      color: var(--oc-muted);
      font-size: 12px;
      margin-top: 3px;
    }

    .oc-edu-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      min-height: 30px;
      padding: 0 10px;
      border-radius: 999px;
      background: var(--oc-yellow);
      color: #1d2a44;
      font-size: 12px;
      font-weight: 900;
      white-space: nowrap;
    }

    .oc-edu-badge::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--oc-blue);
      box-shadow: 0 0 0 4px rgba(11, 74, 162, 0.12);
    }

    .oc-edu-scene {
      position: relative;
      height: 210px;
      z-index: 1;
      animation: ocSceneFloat 5.2s ease-in-out infinite;
    }

    .oc-open-book {
      position: absolute;
      left: 50%;
      bottom: 16px;
      width: 278px;
      height: 128px;
      transform: translateX(-50%);
      display: grid;
      grid-template-columns: 1fr 1fr;
      filter: drop-shadow(0 18px 20px rgba(11, 74, 162, 0.18));
    }

    .oc-book-page {
      position: relative;
      background: #fff;
      border: 2px solid #d9e7f8;
    }

    .oc-book-page:first-child {
      border-radius: 10px 0 0 28px;
      transform: skewY(4deg);
    }

    .oc-book-page:last-child {
      border-radius: 0 10px 28px 0;
      transform: skewY(-4deg);
    }

    .oc-book-page::before,
    .oc-book-page::after {
      content: "";
      position: absolute;
      left: 24px;
      right: 24px;
      height: 8px;
      border-radius: 999px;
      background: #dce8f8;
    }

    .oc-book-page::before {
      top: 34px;
    }

    .oc-book-page::after {
      top: 58px;
      right: 42px;
    }

    .oc-cap {
      position: absolute;
      left: 50%;
      top: 8px;
      width: 148px;
      height: 86px;
      transform: translateX(-50%);
    }

    .oc-cap__top {
      position: absolute;
      left: 12px;
      top: 0;
      width: 124px;
      height: 54px;
      background: var(--oc-blue);
      clip-path: polygon(50% 0, 100% 38%, 50% 76%, 0 38%);
      box-shadow: 0 14px 24px rgba(11, 74, 162, 0.2);
    }

    .oc-cap__band {
      position: absolute;
      left: 42px;
      top: 44px;
      width: 64px;
      height: 24px;
      border-radius: 0 0 16px 16px;
      background: #0a3b82;
    }

    .oc-cap__tassel {
      position: absolute;
      right: 22px;
      top: 33px;
      width: 3px;
      height: 50px;
      background: var(--oc-yellow);
    }

    .oc-cap__tassel::after {
      content: "";
      position: absolute;
      left: -6px;
      bottom: -5px;
      width: 15px;
      height: 15px;
      border-radius: 50%;
      background: var(--oc-yellow);
    }

    .oc-edu-character {
      position: absolute;
      left: 50%;
      top: 66px;
      width: 96px;
      height: 96px;
      transform: translateX(-50%);
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: var(--oc-yellow);
      color: var(--oc-blue);
      border: 8px solid #fff;
      font-size: 48px;
      font-weight: 900;
      box-shadow: 0 16px 32px rgba(11, 74, 162, 0.22);
    }

    .oc-edu-chip {
      position: absolute;
      z-index: 2;
      display: inline-flex;
      align-items: center;
      gap: 7px;
      min-height: 42px;
      padding: 0 14px;
      border-radius: 8px;
      background: #fff;
      color: #1f3152;
      border: 1px solid #dbe6f5;
      box-shadow: 0 14px 30px rgba(0, 0, 0, 0.18);
      font-weight: 900;
      font-size: 14px;
      white-space: nowrap;
      animation: ocChipOrbit var(--orbit-duration, 16s) ease-in-out infinite;
      animation-delay: var(--orbit-delay, 0s);
      will-change: transform;
    }

    .oc-edu-chip::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--oc-blue);
      box-shadow: 0 0 0 4px rgba(11, 74, 162, 0.12);
    }

    .oc-edu-chip--hsk {
      left: -12px;
      top: 76px;
      --orbit-duration: 15s;
      --orbit-x1: 48px;
      --orbit-y1: -46px;
      --orbit-x2: 116px;
      --orbit-y2: 34px;
      --orbit-x3: 36px;
      --orbit-y3: 92px;
    }

    .oc-edu-chip--teacher {
      right: -10px;
      top: 38px;
      --orbit-duration: 17s;
      --orbit-delay: -3.4s;
      --orbit-x1: -46px;
      --orbit-y1: 54px;
      --orbit-x2: -124px;
      --orbit-y2: 16px;
      --orbit-x3: -72px;
      --orbit-y3: -58px;
    }

    .oc-edu-chip--live {
      right: 20px;
      bottom: 34px;
      --orbit-duration: 16s;
      --orbit-delay: -7s;
      --orbit-x1: -62px;
      --orbit-y1: -40px;
      --orbit-x2: -132px;
      --orbit-y2: -88px;
      --orbit-x3: -24px;
      --orbit-y3: -112px;
    }

    .oc-edu-chip--quiz {
      left: 24px;
      bottom: 26px;
      background: var(--oc-yellow);
      border-color: #e4aa28;
      --orbit-duration: 18s;
      --orbit-delay: -10s;
      --orbit-x1: 78px;
      --orbit-y1: 36px;
      --orbit-x2: 144px;
      --orbit-y2: -30px;
      --orbit-x3: 86px;
      --orbit-y3: -96px;
    }

    .oc-edu-chip--quiz::before,
    .oc-edu-badge::before {
      background: var(--oc-blue);
    }

    @keyframes ocOrbitRing {
      from {
        transform: translate(-50%, -50%) rotate(0deg);
      }

      to {
        transform: translate(-50%, -50%) rotate(360deg);
      }
    }

    @keyframes ocGlowPulse {
      0%,
      100% {
        transform: scale(0.95);
        opacity: 0.72;
      }

      50% {
        transform: scale(1.05);
        opacity: 1;
      }
    }

    @keyframes ocCardFloat {
      0%,
      100% {
        transform: translate3d(0, 0, 0);
      }

      50% {
        transform: translate3d(0, -10px, 0);
      }
    }

    @keyframes ocCardShine {
      0%,
      42% {
        transform: rotate(18deg) translateX(-170%);
      }

      62%,
      100% {
        transform: rotate(18deg) translateX(360%);
      }
    }

    @keyframes ocSceneFloat {
      0%,
      100% {
        transform: translate3d(0, 0, 0);
      }

      50% {
        transform: translate3d(0, -7px, 0);
      }
    }

    @keyframes ocChipOrbit {
      0%,
      100% {
        transform: translate3d(0, 0, 0) scale(1);
      }

      25% {
        transform: translate3d(var(--orbit-x1), var(--orbit-y1), 0) scale(1.04);
      }

      50% {
        transform: translate3d(var(--orbit-x2), var(--orbit-y2), 0) scale(1);
      }

      75% {
        transform: translate3d(var(--orbit-x3), var(--orbit-y3), 0) scale(1.04);
      }
    }

    .oc-hero {
      background: linear-gradient(180deg, #ffffff 0%, #f5f9ff 100%);
      border-bottom: 1px solid var(--oc-line);
    }

    .oc-hero__inner {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(380px, 1.05fr);
      align-items: center;
      gap: 56px;
      min-height: 560px;
      padding: 62px 0 50px;
    }

    .oc-kicker {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      width: fit-content;
      margin: 0 0 18px;
      padding: 8px 12px;
      border: 1px solid #c8dcf7;
      border-radius: 999px;
      color: var(--oc-blue);
      background: #fff;
      font-weight: 700;
      font-size: 13px;
    }

    .oc-kicker::before {
      content: "";
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--oc-yellow);
      box-shadow: 0 0 0 4px rgba(248, 185, 50, 0.22);
    }

    .oc-hero h1 {
      margin: 0;
      color: var(--oc-ink);
      font-size: clamp(38px, 5vw, 64px);
      line-height: 1.05;
      letter-spacing: 0;
    }

    .oc-hero h1 span {
      color: var(--oc-blue);
    }

    .oc-hero__lead {
      margin: 20px 0 28px;
      color: #3d4b64;
      font-size: clamp(18px, 2vw, 22px);
      max-width: 620px;
    }

    .oc-hero__buttons {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-wrap: wrap;
      margin-bottom: 26px;
    }

    .oc-hero__proof {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      max-width: 560px;
      gap: 10px;
    }

    .oc-proof-item {
      padding: 12px 14px;
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
    }

    .oc-proof-item strong {
      display: block;
      color: var(--oc-blue);
      font-size: 21px;
      line-height: 1.1;
    }

    .oc-proof-item span {
      display: block;
      margin-top: 4px;
      color: var(--oc-muted);
      font-size: 13px;
    }

    .oc-hero-visual {
      position: relative;
      min-height: 470px;
    }

    .oc-hero-card {
      position: absolute;
      inset: 34px 0 0 52px;
      border: 1px solid #cfdcf0;
      border-radius: 8px;
      background: #fff;
      box-shadow: var(--oc-shadow);
      overflow: hidden;
    }

    .oc-hero-card__top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 20px;
      background: var(--oc-blue);
      color: #fff;
    }

    .oc-hero-card__top strong {
      font-size: 18px;
    }

    .oc-level-badge {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      padding: 0 10px;
      border-radius: 6px;
      background: var(--oc-yellow);
      color: #16233d;
      font-weight: 800;
      font-size: 13px;
    }

    .oc-lesson-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 16px;
      padding: 20px;
    }

    .oc-video-panel {
      min-height: 210px;
      padding: 20px;
      border-radius: 8px;
      background: linear-gradient(135deg, #eaf3ff 0%, #fff8e6 100%);
      border: 1px solid #d7e6fb;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .oc-chinese-mark {
      display: grid;
      place-items: center;
      width: 120px;
      height: 120px;
      border-radius: 50%;
      margin: 0 auto;
      background: #fff;
      color: var(--oc-blue);
      border: 8px solid rgba(248, 185, 50, 0.9);
      font-size: 58px;
      font-weight: 800;
      box-shadow: 0 14px 26px rgba(11, 74, 162, 0.16);
    }

    .oc-video-panel p {
      margin: 18px 0 0;
      font-weight: 700;
      color: #1f3355;
      text-align: center;
    }

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

    .oc-progress-card {
      padding: 13px;
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
    }

    .oc-progress-card strong {
      display: block;
      margin-bottom: 8px;
      color: #20304d;
      font-size: 14px;
    }

    .oc-bar {
      height: 8px;
      border-radius: 999px;
      background: #e7edf7;
      overflow: hidden;
    }

    .oc-bar span {
      display: block;
      height: 100%;
      border-radius: 999px;
      background: var(--oc-blue);
    }

    .oc-floating-logo {
      position: absolute;
      left: 0;
      top: 0;
      width: 132px;
      height: 132px;
      border-radius: 50%;
      border: 8px solid #fff;
      box-shadow: var(--oc-shadow);
      object-fit: cover;
      background: #fff;
    }

    .oc-floating-note {
      position: absolute;
      right: 16px;
      bottom: 26px;
      max-width: 280px;
      padding: 18px;
      border: 1px solid #d4e2f4;
      border-left: 5px solid var(--oc-yellow);
      border-radius: 8px;
      background: #fff;
      box-shadow: 0 12px 32px rgba(18, 39, 74, 0.12);
    }

    .oc-floating-note strong {
      display: block;
      color: var(--oc-blue);
      font-size: 15px;
      margin-bottom: 5px;
    }

    .oc-floating-note p {
      margin: 0;
      color: var(--oc-muted);
      font-size: 13px;
    }

    .oc-section {
      padding: 64px 0;
    }

    .oc-section--tint {
      background: var(--oc-bg);
    }

    .oc-section__head {
      display: flex;
      justify-content: space-between;
      align-items: end;
      gap: 28px;
      margin-bottom: 28px;
    }

    .oc-eyebrow {
      margin: 0 0 8px;
      color: var(--oc-blue);
      font-size: 14px;
      font-weight: 800;
    }

    .oc-section h2 {
      margin: 0;
      font-size: clamp(28px, 3vw, 42px);
      line-height: 1.15;
      letter-spacing: 0;
    }

    .oc-section__head p,
    .oc-section__intro {
      margin: 10px 0 0;
      color: var(--oc-muted);
      font-size: 17px;
      max-width: 620px;
    }

    .oc-carousel-controls {
      display: flex;
      gap: 10px;
    }

    .oc-icon-button {
      width: 42px;
      height: 42px;
      border: 1px solid var(--oc-line);
      border-radius: 50%;
      background: #fff;
      color: var(--oc-blue);
      font-size: 18px;
      cursor: pointer;
    }

    .oc-feature-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .oc-feature-card {
      min-height: 230px;
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
      overflow: hidden;
      box-shadow: 0 8px 20px rgba(18, 39, 74, 0.08);
    }

    .oc-feature-media {
      min-height: 112px;
      padding: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: #fff;
      background: var(--oc-blue);
    }

    .oc-feature-media--yellow {
      background: #d59610;
    }

    .oc-feature-media--teal {
      background: var(--oc-teal);
    }

    .oc-feature-media strong {
      font-size: 42px;
      line-height: 1;
    }

    .oc-mini-pills {
      display: grid;
      gap: 7px;
    }

    .oc-mini-pills span {
      display: inline-flex;
      align-items: center;
      height: 24px;
      padding: 0 9px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.18);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
    }

    .oc-feature-body {
      padding: 18px;
    }

    .oc-feature-body h3 {
      margin: 0 0 8px;
      font-size: 19px;
      line-height: 1.25;
    }

    .oc-feature-body p {
      margin: 0 0 16px;
      color: var(--oc-muted);
      font-size: 14px;
    }

    .oc-card-link {
      color: var(--oc-blue);
      font-weight: 800;
      font-size: 14px;
    }

    .oc-tabs {
      display: flex;
      gap: 10px;
      overflow-x: auto;
      padding-bottom: 8px;
      margin-bottom: 20px;
    }

    .oc-tab {
      flex: 0 0 auto;
      min-height: 42px;
      padding: 0 16px;
      border: 1px solid var(--oc-line);
      border-radius: 999px;
      background: #fff;
      color: #34445f;
      cursor: pointer;
      font-weight: 700;
    }

    .oc-tab[aria-selected="true"] {
      background: var(--oc-blue);
      border-color: var(--oc-blue);
      color: #fff;
    }

    .oc-course-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 18px;
    }

    .oc-course-card {
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
      overflow: hidden;
      min-height: 336px;
      box-shadow: 0 8px 20px rgba(18, 39, 74, 0.08);
    }

    .oc-course-thumb {
      min-height: 126px;
      padding: 18px;
      background: linear-gradient(135deg, #0b4aa2 0%, #2c7bd4 100%);
      color: #fff;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .oc-course-thumb--gold {
      background: linear-gradient(135deg, #c48309 0%, #f8b932 100%);
      color: #172033;
    }

    .oc-course-thumb--teal {
      background: linear-gradient(135deg, #0f766e 0%, #27a7a0 100%);
    }

    .oc-course-thumb--ink {
      background: linear-gradient(135deg, #20304d 0%, #4e638c 100%);
    }

    .oc-course-thumb small {
      display: inline-flex;
      width: fit-content;
      min-height: 25px;
      align-items: center;
      padding: 0 9px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.22);
      font-weight: 800;
    }

    .oc-course-thumb--gold small {
      background: rgba(255, 255, 255, 0.45);
    }

    .oc-course-thumb strong {
      font-size: 34px;
      line-height: 1;
    }

    .oc-course-body {
      padding: 18px;
    }

    .oc-course-body h3 {
      margin: 0 0 10px;
      font-size: 18px;
      line-height: 1.25;
    }

    .oc-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin: 12px 0 16px;
    }

    .oc-meta span {
      display: inline-flex;
      min-height: 24px;
      align-items: center;
      padding: 0 8px;
      border-radius: 999px;
      background: var(--oc-blue-soft);
      color: #245384;
      font-size: 12px;
      font-weight: 700;
    }

    .oc-course-body p {
      margin: 0;
      color: var(--oc-muted);
      font-size: 14px;
    }

    .oc-course-info {
      display: grid;
      gap: 8px;
      margin: 14px 0 16px;
      padding: 12px;
      border-radius: 8px;
      background: #f7faff;
      border: 1px solid #dce8f8;
      color: #31415f;
      font-size: 13px;
    }

    .oc-course-info span {
      display: flex;
      justify-content: space-between;
      gap: 12px;
    }

    .oc-course-info b {
      color: var(--oc-blue);
    }

    .oc-status {
      display: inline-flex;
      align-items: center;
      min-height: 22px;
      width: fit-content;
      padding: 0 8px;
      border-radius: 999px;
      background: #e8f7ed;
      color: #18763c;
      font-weight: 800;
      font-size: 12px;
    }

    .oc-trust-band {
      padding: 42px 0;
      background: #fff;
      border-top: 1px solid var(--oc-line);
      border-bottom: 1px solid var(--oc-line);
    }

    .oc-trust-band h2 {
      margin: 0 0 24px;
      text-align: center;
      font-size: clamp(24px, 2.5vw, 34px);
      line-height: 1.18;
    }

    .oc-logo-strip {
      display: grid;
      grid-template-columns: repeat(6, minmax(0, 1fr));
      gap: 12px;
    }

    .oc-logo-chip {
      min-height: 72px;
      display: grid;
      place-items: center;
      padding: 12px;
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fbfcff;
      color: #2e3b55;
      text-align: center;
      font-weight: 800;
    }

    .oc-path-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .oc-path-card {
      display: grid;
      min-height: 170px;
      padding: 22px;
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
      box-shadow: 0 8px 20px rgba(18, 39, 74, 0.08);
    }

    .oc-path-card h3 {
      margin: 0 0 8px;
      color: var(--oc-blue);
      font-size: 21px;
    }

    .oc-path-card p {
      margin: 0 0 18px;
      color: var(--oc-muted);
    }

    .oc-path-card a {
      align-self: end;
      color: var(--oc-blue);
      font-weight: 800;
    }

    .oc-system-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .oc-system-card {
      min-height: 238px;
      padding: 22px;
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
      box-shadow: 0 8px 20px rgba(18, 39, 74, 0.08);
    }

    .oc-system-card__icon {
      display: grid;
      place-items: center;
      width: 46px;
      height: 46px;
      margin-bottom: 16px;
      border-radius: 8px;
      background: var(--oc-blue-soft);
      color: var(--oc-blue);
      font-weight: 900;
      font-size: 20px;
    }

    .oc-system-card h3 {
      margin: 0 0 8px;
      font-size: 19px;
      line-height: 1.25;
    }

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

    .oc-categories {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
    }

    .oc-category {
      min-height: 66px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 14px 16px;
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
      color: #263650;
      font-weight: 800;
    }

    .oc-category span {
      display: grid;
      place-items: center;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--oc-yellow-soft);
      color: #ad7507;
      flex: 0 0 auto;
    }

    .oc-collection {
      display: grid;
      grid-template-columns: 0.85fr 1.15fr;
      gap: 28px;
      align-items: stretch;
    }

    .oc-collection-panel {
      padding: 28px;
      border-radius: 8px;
      background: var(--oc-blue);
      color: #fff;
      min-height: 350px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .oc-collection-panel h2 {
      color: #fff;
      font-size: clamp(27px, 3vw, 40px);
    }

    .oc-collection-panel p {
      color: rgba(255, 255, 255, 0.84);
      font-size: 17px;
      margin: 14px 0 0;
    }

    .oc-collection-stats {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
      margin-top: 28px;
    }

    .oc-collection-stats span {
      min-height: 74px;
      padding: 14px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.1);
      font-size: 13px;
    }

    .oc-collection-stats strong {
      display: block;
      font-size: 24px;
      color: var(--oc-yellow);
    }

    .oc-collection-list {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .oc-mini-course {
      padding: 20px;
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
      box-shadow: 0 8px 20px rgba(18, 39, 74, 0.08);
    }

    .oc-mini-course strong {
      display: inline-flex;
      min-height: 26px;
      align-items: center;
      padding: 0 9px;
      border-radius: 999px;
      color: var(--oc-blue);
      background: var(--oc-blue-soft);
      font-size: 12px;
      margin-bottom: 14px;
    }

    .oc-mini-course h3 {
      margin: 0 0 8px;
      font-size: 19px;
      line-height: 1.25;
    }

    .oc-mini-course p {
      margin: 0;
      color: var(--oc-muted);
      font-size: 14px;
    }

    .oc-motivation {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 28px;
      align-items: center;
    }

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

    .oc-choice {
      min-height: 58px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 16px;
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
      color: #253652;
      font-weight: 800;
      cursor: pointer;
    }

    .oc-choice[aria-pressed="true"] {
      border-color: var(--oc-blue);
      box-shadow: 0 0 0 3px rgba(11, 74, 162, 0.11);
    }

    .oc-outcome {
      min-height: 320px;
      padding: 30px;
      border-radius: 8px;
      background: #fff;
      border: 1px solid var(--oc-line);
      box-shadow: var(--oc-shadow);
    }

    .oc-outcome h3 {
      margin: 0 0 12px;
      color: var(--oc-blue);
      font-size: clamp(24px, 3vw, 36px);
      line-height: 1.15;
    }

    .oc-outcome p {
      color: var(--oc-muted);
      font-size: 17px;
      margin: 0 0 20px;
    }

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

    .oc-check-list li {
      display: flex;
      gap: 10px;
      color: #2b3b55;
    }

    .oc-check-list li::before {
      content: "✓";
      display: grid;
      place-items: center;
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--oc-yellow);
      color: #16233d;
      font-weight: 900;
      flex: 0 0 auto;
    }

    .oc-testimonials {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 18px;
    }

    .oc-teacher-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .oc-teacher-card {
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
      overflow: hidden;
      box-shadow: 0 8px 20px rgba(18, 39, 74, 0.08);
    }

    .oc-teacher-cover {
      min-height: 112px;
      padding: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #0b4aa2 0%, #f8b932 100%);
      color: #fff;
    }

    .oc-teacher-avatar {
      display: grid;
      place-items: center;
      width: 64px;
      height: 64px;
      border-radius: 50%;
      background: #fff;
      color: var(--oc-blue);
      font-weight: 900;
      font-size: 22px;
      border: 4px solid rgba(255, 255, 255, 0.55);
    }

    .oc-teacher-rating {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      padding: 0 10px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.22);
      font-weight: 900;
    }

    .oc-teacher-body {
      padding: 20px;
    }

    .oc-teacher-body h3 {
      margin: 0 0 6px;
      font-size: 20px;
    }

    .oc-teacher-body p {
      margin: 0 0 14px;
      color: var(--oc-muted);
      font-size: 14px;
    }

    .oc-teacher-facts {
      display: grid;
      gap: 8px;
      margin-bottom: 16px;
      color: #31415f;
      font-size: 13px;
    }

    .oc-teacher-facts span {
      display: flex;
      justify-content: space-between;
      gap: 12px;
    }

    .oc-teacher-facts b {
      color: var(--oc-blue);
    }

    .oc-quote-card {
      min-height: 270px;
      padding: 20px;
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
      box-shadow: 0 8px 20px rgba(18, 39, 74, 0.08);
    }

    .oc-avatar {
      display: grid;
      place-items: center;
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: var(--oc-blue-soft);
      color: var(--oc-blue);
      font-weight: 900;
      margin-bottom: 16px;
    }

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

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

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

    .oc-faq-item {
      border: 1px solid var(--oc-line);
      border-radius: 8px;
      background: #fff;
      overflow: hidden;
    }

    .oc-faq-button {
      width: 100%;
      min-height: 64px;
      padding: 18px 20px;
      border: 0;
      background: #fff;
      color: #172033;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      text-align: left;
      cursor: pointer;
      font-weight: 800;
    }

    .oc-faq-button span {
      color: var(--oc-blue);
      flex: 0 0 auto;
      font-size: 18px;
    }

    .oc-faq-panel {
      display: none;
      padding: 0 20px 20px;
      color: var(--oc-muted);
    }

    .oc-faq-item.is-open .oc-faq-panel {
      display: block;
    }

    .oc-footer {
      background: #10213d;
      color: #dbe6f5;
      padding: 48px 0 28px;
    }

    .oc-footer__grid {
      display: grid;
      grid-template-columns: 1.2fr repeat(4, minmax(0, 1fr));
      gap: 30px;
    }

    .oc-footer h3,
    .oc-footer h4 {
      color: #fff;
      margin: 0 0 14px;
    }

    .oc-footer p {
      margin: 0;
      color: #b7c6dc;
    }

    .oc-footer a {
      display: block;
      color: #cdd9ea;
      margin: 8px 0;
      font-size: 14px;
    }

    .oc-footer__brand {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .oc-footer__brand img {
      width: 54px;
      height: 54px;
      border-radius: 50%;
      object-fit: cover;
      background: #fff;
    }

    .oc-footer__bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      align-items: center;
      margin-top: 34px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.14);
      color: #9fb0c8;
      font-size: 13px;
    }

    .oc-footer__social {
      display: flex;
      gap: 10px;
    }

    .oc-footer__social a {
      display: grid;
      place-items: center;
      width: 34px;
      height: 34px;
      margin: 0;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
      font-weight: 800;
    }

    @media (hover: hover) {
      .oc-main-links a,
      .oc-topbar a,
      .oc-footer a,
      .oc-explore,
      .oc-login,
      .oc-card-link,
      .oc-category,
      .oc-path-card a {
        transition: color 180ms ease, opacity 180ms ease, transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
      }

      .oc-main-links a:hover,
      .oc-topbar a:hover,
      .oc-login:hover,
      .oc-card-link:hover,
      .oc-path-card a:hover {
        color: var(--oc-yellow);
      }

      .oc-explore:hover {
        color: var(--oc-blue);
        background: var(--oc-blue-soft);
        transform: translateY(-2px);
        box-shadow: 0 12px 24px rgba(11, 74, 162, 0.12);
      }

      .oc-footer a:hover {
        color: #fff;
        transform: translateX(3px);
      }

      .oc-logo img,
      .oc-floating-logo,
      .oc-feature-media,
      .oc-course-thumb,
      .oc-teacher-cover,
      .oc-teacher-avatar,
      .oc-category span,
      .oc-system-card__icon,
      .oc-avatar {
        transition: transform 220ms ease, box-shadow 220ms ease, filter 220ms ease;
      }

      .oc-hero-card,
      .oc-feature-card,
      .oc-course-card,
      .oc-path-card,
      .oc-system-card,
      .oc-logo-chip,
      .oc-category,
      .oc-mini-course,
      .oc-choice,
      .oc-outcome,
      .oc-teacher-card,
      .oc-quote-card,
      .oc-faq-item,
      .oc-collection-panel {
        transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease, background 220ms ease;
      }

      .oc-hero-card:hover,
      .oc-feature-card:hover,
      .oc-course-card:hover,
      .oc-path-card:hover,
      .oc-system-card:hover,
      .oc-logo-chip:hover,
      .oc-category:hover,
      .oc-mini-course:hover,
      .oc-choice:hover,
      .oc-outcome:hover,
      .oc-teacher-card:hover,
      .oc-quote-card:hover,
      .oc-faq-item:hover {
        transform: translateY(-5px);
        border-color: rgba(11, 74, 162, 0.28);
        box-shadow: 0 18px 42px rgba(18, 39, 74, 0.14);
      }

      .oc-feature-card:hover .oc-feature-media,
      .oc-course-card:hover .oc-course-thumb,
      .oc-teacher-card:hover .oc-teacher-cover {
        transform: scale(1.025);
        filter: saturate(1.08);
      }

      .oc-teacher-card:hover .oc-teacher-avatar,
      .oc-system-card:hover .oc-system-card__icon,
      .oc-quote-card:hover .oc-avatar,
      .oc-category:hover span {
        transform: translateY(-2px) scale(1.06);
      }

      .oc-logo:hover img,
      .oc-floating-logo:hover {
        transform: rotate(-3deg) scale(1.04);
      }

      .oc-btn {
        transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
      }

      .oc-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 14px 28px rgba(11, 74, 162, 0.2);
      }

      .oc-btn--outline:hover {
        background: var(--oc-blue-soft);
      }

      .oc-btn--yellow:hover {
        box-shadow: 0 14px 28px rgba(248, 185, 50, 0.26);
      }

      .oc-tab,
      .oc-choice {
        transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
      }

      .oc-tab:hover,
      .oc-choice:hover {
        border-color: var(--oc-blue);
      }

      .oc-collection-panel:hover {
        transform: translateY(-4px);
        box-shadow: 0 20px 44px rgba(11, 74, 162, 0.22);
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
      }
    }

    @media (max-width: 1080px) {
      .oc-nav {
        grid-template-columns: auto 1fr auto;
      }

      .oc-nav--shared {
        grid-template-columns: minmax(0, 1fr) auto;
      }

      .oc-explore,
      .oc-main-links,
      .oc-search,
      .oc-login {
        display: none;
      }

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

      .oc-actions {
        gap: 10px;
      }

      .oc-hero__inner {
        grid-template-columns: 1fr;
        min-height: auto;
        gap: 34px;
      }

      .oc-launch-banner__inner {
        grid-template-columns: 1fr;
        min-height: auto;
      }

      .oc-hero-visual {
        min-height: 430px;
      }

      .oc-course-grid,
      .oc-system-grid,
      .oc-testimonials,
      .oc-teacher-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .oc-logo-strip,
      .oc-categories {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }

      .oc-collection,
      .oc-motivation {
        grid-template-columns: 1fr;
      }

      .oc-footer__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 760px) {
      .oc-container {
        width: min(100% - 24px, 1180px);
      }

      .oc-topbar {
        display: none;
      }

      .oc-nav {
        min-height: 66px;
        gap: 10px;
      }

      .oc-logo img {
        width: 42px;
        height: 42px;
      }

      .oc-logo strong {
        font-size: 20px;
      }

      .oc-logo span {
        display: none;
      }

      .oc-actions .oc-btn {
        display: none;
      }

      .oc-hero__inner {
        padding: 42px 0 34px;
      }

      .oc-hero h1 {
        font-size: clamp(34px, 10vw, 46px);
      }

      .oc-hero__buttons {
        align-items: stretch;
      }

      .oc-hero__buttons .oc-btn {
        width: 100%;
      }

      .oc-launch-banner__inner {
        padding: 36px 0 44px;
      }

      .oc-launch-banner h1 {
        font-size: clamp(34px, 10vw, 46px);
      }

      .oc-banner-actions .oc-btn {
        width: 100%;
      }

      .oc-banner-points {
        grid-template-columns: 1fr;
      }

      .oc-edu-visual {
        min-height: 360px;
      }

      .oc-edu-card {
        min-height: 315px;
        padding: 20px;
      }

      .oc-edu-card__head {
        align-items: flex-start;
      }

      .oc-edu-scene {
        height: 202px;
      }

      .oc-open-book {
        width: 230px;
        height: 112px;
      }

      .oc-edu-character {
        width: 82px;
        height: 82px;
        top: 72px;
        font-size: 40px;
        border-width: 7px;
      }

      .oc-cap {
        top: 18px;
        transform: translateX(-50%) scale(0.85);
      }

      .oc-edu-chip {
        min-height: 34px;
        padding: 0 10px;
        font-size: 12px;
      }

      .oc-edu-chip--hsk {
        left: 4px;
        top: 112px;
        --orbit-x1: 18px;
        --orbit-y1: -18px;
        --orbit-x2: 42px;
        --orbit-y2: 10px;
        --orbit-x3: 18px;
        --orbit-y3: 34px;
      }

      .oc-edu-chip--teacher {
        right: 4px;
        top: 92px;
        --orbit-x1: -18px;
        --orbit-y1: 22px;
        --orbit-x2: -48px;
        --orbit-y2: 8px;
        --orbit-x3: -22px;
        --orbit-y3: -22px;
      }

      .oc-edu-chip--live {
        right: 8px;
        bottom: 26px;
        --orbit-x1: -22px;
        --orbit-y1: -16px;
        --orbit-x2: -54px;
        --orbit-y2: -42px;
        --orbit-x3: -10px;
        --orbit-y3: -52px;
      }

      .oc-edu-chip--quiz {
        left: 8px;
        bottom: 22px;
        --orbit-x1: 24px;
        --orbit-y1: 14px;
        --orbit-x2: 58px;
        --orbit-y2: -12px;
        --orbit-x3: 28px;
        --orbit-y3: -42px;
      }

      .oc-hero__proof {
        grid-template-columns: 1fr;
      }

      .oc-hero-visual {
        min-height: 480px;
      }

      .oc-hero-card {
        inset: 70px 0 0 0;
      }

      .oc-floating-logo {
        width: 104px;
        height: 104px;
      }

      .oc-floating-note {
        right: 10px;
        bottom: 8px;
        max-width: calc(100% - 20px);
      }

      .oc-lesson-grid {
        grid-template-columns: 1fr;
      }

      .oc-video-panel {
        min-height: 180px;
      }

      .oc-chinese-mark {
        width: 94px;
        height: 94px;
        font-size: 45px;
        border-width: 7px;
      }

      .oc-section {
        padding: 46px 0;
      }

      .oc-section__head {
        align-items: start;
        flex-direction: column;
        gap: 16px;
      }

      .oc-feature-grid,
      .oc-course-grid,
      .oc-path-grid,
      .oc-system-grid,
      .oc-collection-list,
      .oc-testimonials,
      .oc-teacher-grid,
      .oc-categories,
      .oc-logo-strip {
        grid-template-columns: 1fr;
      }

      .oc-trust-band h2 {
        text-align: left;
      }

      .oc-footer__grid {
        grid-template-columns: 1fr;
      }

      .oc-footer__bottom {
        align-items: flex-start;
        flex-direction: column;
      }
    }

/* UX Builder native layout seed.
   These rules make Flatsome section/row/col/text elements render like the
   approved OnChinese design while keeping the Builder tree editable. */
.oc-native-topbar,
.oc-native-header {
  border-bottom: 1px solid var(--oc-line);
}

.oc-native-topbar .section-content,
.oc-native-header .section-content,
.oc-native-section .section-content,
.oc-native-footer .section-content {
  position: relative;
  z-index: 2;
}

.oc-native-topbar-row,
.oc-native-header-row,
.oc-native-heading-row,
.oc-native-learning-row,
.oc-native-collection-row,
.oc-native-motivation-row,
.oc-native-footer-row,
.oc-native-footer-bottom {
  width: min(1180px, calc(100% - 32px));
  margin-left: auto;
  margin-right: auto;
}

.oc-native-topbar-row,
.oc-native-header-row {
  min-height: 38px;
}

.oc-native-header-row {
  min-height: 74px;
}

.oc-native-topbar .col,
.oc-native-header .col,
.oc-native-section .col,
.oc-native-section .col-inner,
.oc-native-footer .col,
.oc-native-footer .col-inner {
  padding-bottom: 0;
}

.oc-native-inline-links p,
.oc-native-main-links p,
.oc-native-actions-col .col-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 0;
}

.oc-native-inline-links p {
  color: var(--oc-muted);
  font-size: 13px;
}

.oc-native-inline-links a:first-child {
  color: var(--oc-blue);
  font-weight: 800;
}

.oc-native-align-right p,
.oc-native-align-right {
  justify-content: flex-end;
  text-align: right;
}

.oc-native-main-links p {
  gap: 22px;
  color: #2d3850;
  font-size: 14px;
  white-space: nowrap;
}

.oc-native-actions-col .col-inner {
  justify-content: flex-end;
  gap: 12px;
}

.oc-native-header .button,
.oc-native-button-row .button,
.oc-native-card .button,
.oc-native-cta-row .button {
  min-height: 44px;
  border-radius: 6px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: none;
}

.oc-native-yellow {
  background: var(--oc-yellow) !important;
  border-color: #e3a51d !important;
  color: #1c2b47 !important;
}

.oc-native-primary {
  background: var(--oc-blue) !important;
  border-color: var(--oc-blue) !important;
  color: #fff !important;
}

.oc-native-white-outline {
  background: #fff !important;
  color: var(--oc-blue) !important;
  border-color: var(--oc-blue) !important;
}

.oc-native-login {
  color: var(--oc-blue) !important;
  font-weight: 800;
}

.oc-native-explore {
  color: var(--oc-blue) !important;
  border-color: var(--oc-blue) !important;
}

.oc-launch-banner .section-bg,
.oc-native-footer .section-bg {
  background: transparent;
}

.oc-native-hero-row {
  display: grid !important;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: 42px;
  align-items: center;
  min-height: 420px;
  padding: 46px 0;
}

.oc-native-learning-row {
  display: grid !important;
  grid-template-columns: minmax(0, 0.95fr) minmax(380px, 1.05fr);
  gap: 56px;
  align-items: center;
  min-height: 560px;
  padding: 62px 0 50px;
}

.oc-native-hero-row > .col,
.oc-native-learning-row > .col {
  width: auto !important;
  max-width: none !important;
  flex-basis: auto !important;
}

.oc-native-hero-title h1,
.oc-native-section-title h2 {
  margin: 0;
}

.oc-native-hero-title h1 {
  max-width: 650px;
  color: #fff;
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1.05;
}

.oc-native-hero-title h1 span,
.oc-native-section-title h2 span {
  color: var(--oc-yellow);
}

.oc-native-hero-lead p,
.oc-native-section-lead p {
  color: #d9e7ff;
  font-size: clamp(17px, 2vw, 21px);
}

.oc-native-section-lead p {
  color: var(--oc-muted);
}

.oc-native-button-row {
  margin: 0 -8px 18px !important;
}

.oc-native-button-row > .col {
  padding-left: 8px;
  padding-right: 8px;
}

.oc-native-points-row,
.oc-native-proof-row,
.oc-native-card-grid,
.oc-native-chip-row,
.oc-native-category-grid {
  margin-left: -8px !important;
  margin-right: -8px !important;
}

.oc-native-point {
  min-height: 68px;
  display: flex;
  align-items: center;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.08);
}

.oc-native-point p {
  margin: 0;
  color: #ecf4ff;
  font-size: 13px;
  font-weight: 800;
}

.oc-native-heading-row {
  margin-bottom: 28px;
}

.oc-native-heading-row h2,
.oc-native-section h2 {
  margin: 0;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.15;
}

.oc-native-section-intro p {
  color: var(--oc-muted);
  font-size: 17px;
  max-width: 640px;
}

.oc-native-card-grid {
  align-items: stretch;
}

.oc-native-card {
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  overflow: visible !important;
}

.oc-native-card > .col-inner {
  height: 100%;
  min-height: 190px;
  padding: 22px;
  border: 1px solid var(--oc-line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(18, 39, 74, 0.08);
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease;
}

.oc-native-card > .col-inner:hover {
  transform: translateY(-5px);
  border-color: rgba(11, 74, 162, 0.28);
  box-shadow: 0 18px 42px rgba(18, 39, 74, 0.14);
}

.oc-native-card .text {
  margin-bottom: 10px;
}

.oc-native-card h3 {
  margin: 0;
  color: var(--oc-ink);
  font-size: 20px;
  line-height: 1.25;
}

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

.oc-native-kicker,
.oc-native-meta {
  display: inline-flex;
  width: fit-content;
  min-height: 26px;
  align-items: center;
  padding: 0 9px;
  border-radius: 999px;
  background: var(--oc-blue-soft);
  color: var(--oc-blue) !important;
  font-size: 12px !important;
  font-weight: 900;
}

.oc-native-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 8px;
  background: var(--oc-blue-soft);
  color: var(--oc-blue);
  font-weight: 900;
}

.oc-course-card > .col-inner,
.oc-teacher-card > .col-inner,
.oc-quote-card > .col-inner,
.oc-system-card > .col-inner {
  min-height: 260px;
}

.oc-logo-strip,
.oc-categories,
.oc-collection-list,
.oc-choice-list {
  display: flex !important;
  flex-wrap: wrap;
}

.oc-logo-strip > .col {
  flex-basis: 16.666%;
  max-width: 16.666%;
}

.oc-categories > .col {
  flex-basis: 25%;
  max-width: 25%;
}

.oc-logo-chip {
  display: grid;
  place-items: center;
  min-height: 72px;
  border: 1px solid var(--oc-line);
  border-radius: 8px;
  background: #fbfcff;
  font-weight: 900;
}

.oc-logo-chip p {
  margin: 0;
}

.oc-category {
  width: 100%;
  min-height: 66px;
  justify-content: space-between;
  background: #fff !important;
  border-color: var(--oc-line) !important;
  color: #263650 !important;
}

.oc-collection-panel {
  padding: 0 !important;
}

.oc-collection-panel:not(.col) {
  padding: 28px !important;
}

.oc-collection-panel > .col-inner {
  min-height: 350px;
  padding: 28px;
  border-radius: 8px;
  background: var(--oc-blue);
  color: #fff;
}

.oc-collection-panel h2,
.oc-collection-panel p {
  color: #fff;
}

.oc-collection-stats .col-inner {
  min-height: 74px;
  padding: 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
}

.oc-collection-stats strong {
  color: var(--oc-yellow);
  font-size: 24px;
}

.oc-choice {
  min-height: 58px;
  padding: 14px 16px;
  border: 1px solid var(--oc-line);
  border-radius: 8px;
  background: #fff;
  color: #253652;
  font-weight: 900;
}

.oc-outcome {
  min-height: 320px;
  padding: 30px;
  border: 1px solid var(--oc-line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--oc-shadow);
}

.oc-outcome h3 {
  color: var(--oc-blue);
  font-size: clamp(24px, 3vw, 36px);
}

.oc-cta > .col-inner,
.oc-native-cta-row {
  border-radius: 8px;
}

.oc-native-cta-row {
  padding: 42px;
  background: var(--oc-blue);
}

.oc-native-cta-row h2,
.oc-native-cta-row p {
  color: #fff;
}

.oc-footer__grid,
.oc-footer__bottom {
  display: flex !important;
}

.oc-footer a {
  color: #cdd9ea;
}

@media (max-width: 1080px) {
  .oc-native-hero-row,
  .oc-native-learning-row {
    grid-template-columns: 1fr;
  }

  .oc-native-search-col,
  .oc-native-nav-col,
  .oc-native-login {
    display: none;
  }

  .oc-logo-strip > .col,
  .oc-categories > .col {
    flex-basis: 50%;
    max-width: 50%;
  }
}

@media (max-width: 760px) {
  .oc-native-topbar-row,
  .oc-native-header-row {
    min-height: auto;
    padding: 12px 0;
  }

  .oc-native-inline-links p,
  .oc-native-main-links p,
  .oc-native-actions-col .col-inner {
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .oc-native-hero-row,
  .oc-native-learning-row {
    min-height: auto;
    padding: 36px 0 44px;
  }

  .oc-native-hero-title h1,
  .oc-native-section-title h2 {
    font-size: clamp(34px, 10vw, 46px);
  }

  .oc-logo-strip > .col,
  .oc-categories > .col {
    flex-basis: 100%;
    max-width: 100%;
  }

  .oc-native-cta-row {
    padding: 28px;
  }
}

/* Native Builder hardening: keep top-level rows centered and predictable. */
.oc-native-topbar-row,
.oc-native-header-row,
.oc-native-hero-row,
.oc-native-learning-row,
.oc-native-heading-row,
.oc-native-trust-row,
.oc-native-card-grid,
.oc-native-chip-row,
.oc-native-category-grid,
.oc-native-collection-row,
.oc-native-motivation-row,
.oc-native-cta-row,
.oc-native-footer-row,
.oc-native-footer-bottom {
  width: min(1180px, calc(100% - 32px)) !important;
  max-width: 1180px !important;
  margin-left: auto !important;
  margin-right: auto !important;
}

.oc-native-card-grid::before,
.oc-native-card-grid::after,
.oc-native-chip-row::before,
.oc-native-chip-row::after,
.oc-native-category-grid::before,
.oc-native-category-grid::after,
.oc-native-trust-row::before,
.oc-native-trust-row::after {
  content: none !important;
  display: none !important;
}

.oc-native-card-grid,
.oc-native-chip-row,
.oc-native-category-grid {
  align-items: stretch !important;
  margin-top: 0 !important;
  margin-bottom: 0 !important;
}

.oc-feature-grid.oc-native-card-grid,
.oc-course-grid.oc-native-card-grid,
.oc-path-grid.oc-native-card-grid,
.oc-system-grid.oc-native-card-grid,
.oc-testimonials.oc-native-card-grid,
.oc-teacher-grid.oc-native-card-grid,
.oc-faq.oc-native-card-grid {
  display: grid !important;
  gap: 18px !important;
}

.oc-feature-grid.oc-native-card-grid,
.oc-path-grid.oc-native-card-grid,
.oc-teacher-grid.oc-native-card-grid,
.oc-faq.oc-native-card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
}

.oc-course-grid.oc-native-card-grid,
.oc-system-grid.oc-native-card-grid,
.oc-testimonials.oc-native-card-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
}

.oc-faq.oc-native-card-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
}

.oc-native-card-grid > .col,
.oc-native-chip-row > .col,
.oc-native-category-grid > .col {
  width: 100% !important;
  max-width: none !important;
  flex: initial !important;
  flex-basis: auto !important;
  padding: 0 !important;
}

.oc-native-card-grid > .col > .col-inner,
.oc-native-card > .col-inner {
  height: 100%;
}

.oc-native-card > .col-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.oc-native-card .button {
  width: fit-content;
  margin-top: auto;
}

.oc-logo-strip.oc-native-chip-row {
  display: grid !important;
  grid-template-columns: repeat(6, minmax(0, 1fr)) !important;
  gap: 12px !important;
}

.oc-categories.oc-native-category-grid {
  display: grid !important;
  grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
  gap: 12px !important;
}

.oc-native-heading-row {
  display: block !important;
  margin-bottom: 30px !important;
}

.oc-native-heading-row > .col {
  width: 100% !important;
  max-width: 860px !important;
  flex-basis: 100% !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
}

.oc-native-heading-row .text {
  margin: 0;
}

.oc-native-heading-row .oc-eyebrow {
  display: inline-flex !important;
  align-items: center;
  gap: 8px;
  min-height: 31px;
  width: fit-content;
  margin: 0 0 12px !important;
  padding: 0 13px;
  border: 1px solid rgba(11, 74, 162, 0.16);
  border-radius: 999px;
  background: linear-gradient(90deg, #eaf3ff 0%, #fff7e2 100%);
  color: var(--oc-blue) !important;
  font-size: 12px !important;
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
  text-transform: uppercase;
  box-shadow: 0 8px 20px rgba(11, 74, 162, 0.08);
}

.oc-native-heading-row .oc-eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--oc-yellow);
  box-shadow: 0 0 0 4px rgba(248, 185, 50, 0.18);
  flex: 0 0 auto;
}

.oc-native-heading-row h2,
.oc-native-trust-row h2 {
  position: relative;
  display: inline-block;
  max-width: 860px;
  margin: 0 !important;
  padding-bottom: 15px;
  color: var(--oc-blue-dark);
  font-size: clamp(30px, 3.1vw, 44px) !important;
  font-weight: 900;
  line-height: 1.12 !important;
  letter-spacing: 0;
}

.oc-native-heading-row h2::after,
.oc-native-trust-row h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 96px;
  height: 5px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--oc-yellow) 0 42%, var(--oc-blue) 42% 100%);
  box-shadow: 0 8px 18px rgba(11, 74, 162, 0.16);
}

.oc-native-heading-row h2 span,
.oc-native-section-title h2 span {
  color: #d59610;
}

.oc-native-section-intro p {
  max-width: 740px;
  margin: 16px 0 0 !important;
  color: #536278;
  font-size: 17px;
  line-height: 1.65;
}

.oc-native-trust-row {
  display: block !important;
  margin-bottom: 24px !important;
  text-align: center;
}

.oc-native-trust-row > .col {
  width: 100% !important;
  max-width: 100% !important;
  flex-basis: 100% !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
}

.oc-native-trust-row h2::after {
  left: 50%;
  transform: translateX(-50%);
}

.oc-category {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 14px;
  padding: 14px 18px !important;
  text-align: left !important;
  line-height: 1.25 !important;
  letter-spacing: 0 !important;
  text-transform: none !important;
  white-space: normal !important;
  box-shadow: 0 8px 18px rgba(18, 39, 74, 0.06);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.oc-category span {
  display: block !important;
  flex: 1 1 auto;
  min-width: 0;
  width: auto !important;
  height: auto !important;
  padding: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  color: inherit !important;
  font-size: 15px;
  font-weight: 900;
  line-height: 1.25;
  text-align: left;
  white-space: normal;
}

.oc-motivation h2 {
  position: relative;
  max-width: 560px;
  margin: 0 !important;
  padding-bottom: 15px;
  color: var(--oc-blue-dark) !important;
  font-size: clamp(30px, 3.1vw, 44px) !important;
  font-weight: 900;
  line-height: 1.12 !important;
  letter-spacing: 0;
}

.oc-motivation h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 96px;
  height: 5px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--oc-yellow) 0 42%, var(--oc-blue) 42% 100%);
  box-shadow: 0 8px 18px rgba(11, 74, 162, 0.16);
}

.oc-motivation .oc-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 31px;
  width: fit-content;
  margin-bottom: 12px;
  padding: 0 13px;
  border: 1px solid rgba(11, 74, 162, 0.16);
  border-radius: 999px;
  background: linear-gradient(90deg, #eaf3ff 0%, #fff7e2 100%);
  color: var(--oc-blue);
  font-size: 12px;
  font-weight: 900;
  line-height: 1;
  text-transform: uppercase;
  box-shadow: 0 8px 20px rgba(11, 74, 162, 0.08);
}

.oc-category:hover {
  transform: translateY(-3px);
  border-color: rgba(11, 74, 162, 0.28) !important;
  box-shadow: 0 16px 34px rgba(18, 39, 74, 0.12);
}

@media (max-width: 1080px) {
  .oc-feature-grid.oc-native-card-grid,
  .oc-path-grid.oc-native-card-grid,
  .oc-course-grid.oc-native-card-grid,
  .oc-system-grid.oc-native-card-grid,
  .oc-testimonials.oc-native-card-grid,
  .oc-teacher-grid.oc-native-card-grid,
  .oc-faq.oc-native-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }

  .oc-logo-strip.oc-native-chip-row,
  .oc-categories.oc-native-category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }
}

@media (max-width: 760px) {
  .oc-native-topbar-row,
  .oc-native-header-row,
  .oc-native-hero-row,
  .oc-native-learning-row,
  .oc-native-heading-row,
  .oc-native-trust-row,
  .oc-native-card-grid,
  .oc-native-chip-row,
  .oc-native-category-grid,
  .oc-native-collection-row,
  .oc-native-motivation-row,
  .oc-native-cta-row,
  .oc-native-footer-row,
  .oc-native-footer-bottom {
    width: min(100% - 24px, 1180px) !important;
  }

  .oc-feature-grid.oc-native-card-grid,
  .oc-path-grid.oc-native-card-grid,
  .oc-course-grid.oc-native-card-grid,
  .oc-system-grid.oc-native-card-grid,
  .oc-testimonials.oc-native-card-grid,
  .oc-teacher-grid.oc-native-card-grid,
  .oc-faq.oc-native-card-grid,
  .oc-logo-strip.oc-native-chip-row,
  .oc-categories.oc-native-category-grid {
    grid-template-columns: 1fr !important;
  }

  .oc-native-heading-row h2,
  .oc-native-trust-row h2 {
    font-size: clamp(27px, 8vw, 36px) !important;
  }
}

/* Header needs a fixed editorial rhythm because its content is wider than normal Flatsome columns. */
.oc-native-header-row {
  display: grid !important;
  grid-template-columns: 230px minmax(420px, 1fr) 190px;
  gap: 14px;
  align-items: center;
}

.oc-native-header-row > .col {
  width: auto !important;
  max-width: none !important;
  flex-basis: auto !important;
  padding: 0 !important;
  min-width: 0;
}

.oc-native-header-row > .col::before,
.oc-native-header-row > .col::after {
  content: none !important;
  display: none !important;
}

.oc-native-header-row br,
.oc-native-hero-row br,
.oc-native-learning-row br,
.oc-native-card-grid br,
.oc-native-chip-row br,
.oc-native-category-grid br,
.oc-native-trust-row br,
.oc-native-cta-row br {
  display: none !important;
}

.oc-native-header-row .col-inner {
  min-width: 0;
}

.oc-native-logo-col .col-inner,
.oc-native-nav-col .col-inner,
.oc-native-search-col .col-inner,
.oc-native-actions-col .col-inner {
  display: flex;
  align-items: center;
}

.oc-native-logo-col .oc-logo {
  min-width: 0;
}

.oc-native-logo-col .oc-logo strong,
.oc-native-logo-col .oc-logo span {
  white-space: nowrap;
}

.oc-native-nav-col .text,
.oc-native-nav-col .oc-main-links {
  width: 100%;
  min-width: 0;
}

.oc-native-nav-col .oc-main-links {
  gap: 18px;
  justify-content: center;
}

.oc-native-nav-col .oc-main-links a {
  white-space: nowrap;
}

.oc-native-search-col .oc-search {
  width: 100%;
  min-width: 0;
}

.oc-native-search-col {
  display: none !important;
}

.oc-native-actions-col .col-inner {
  flex-wrap: nowrap;
  justify-content: flex-end;
}

.oc-native-actions-col .button {
  min-width: 112px;
  padding-left: 13px !important;
  padding-right: 13px !important;
  white-space: normal;
  text-align: center;
  line-height: 1.18;
}

.oc-native-section-title h2 {
  color: var(--oc-blue-dark);
  font-weight: 900;
  line-height: 1.12;
}

@media (max-width: 1240px) {
  .oc-native-header-row {
    grid-template-columns: 220px minmax(300px, 1fr) 176px;
  }
}

@media (max-width: 1080px) {
  .oc-native-header-row {
    grid-template-columns: 1fr auto;
  }

  .oc-native-nav-col {
    display: none !important;
  }

  .oc-native-actions-col .button {
    min-width: 116px;
  }
}

@media (max-width: 560px) {
  .oc-native-header-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .oc-native-actions-col .col-inner {
    justify-content: flex-start;
  }
}

/* Vietnamese typography normalization.
   Flatsome can inject theme fonts into headings/buttons; keep OnChinese text
   on one Vietnamese-capable family so diacritics render consistently. */
body .oc-native-topbar,
body .oc-native-header,
body .oc-native-section,
body .oc-native-footer,
body .oc-motivation,
.onchinese-home {
  font-family: var(--oc-font) !important;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body .oc-native-topbar h1,
body .oc-native-topbar h2,
body .oc-native-topbar h3,
body .oc-native-topbar h4,
body .oc-native-header h1,
body .oc-native-header h2,
body .oc-native-header h3,
body .oc-native-header h4,
body .oc-native-section h1,
body .oc-native-section h2,
body .oc-native-section h3,
body .oc-native-section h4,
body .oc-native-footer h1,
body .oc-native-footer h2,
body .oc-native-footer h3,
body .oc-native-footer h4,
body .oc-motivation h1,
body .oc-motivation h2,
body .oc-motivation h3,
body .oc-motivation h4,
.onchinese-home h1,
.onchinese-home h2,
.onchinese-home h3,
.onchinese-home h4 {
  font-family: var(--oc-font) !important;
  font-weight: 800 !important;
  letter-spacing: 0 !important;
}

body .oc-native-topbar p,
body .oc-native-topbar a,
body .oc-native-topbar span,
body .oc-native-header p,
body .oc-native-header a,
body .oc-native-header span,
body .oc-native-header button,
body .oc-native-section p,
body .oc-native-section a,
body .oc-native-section span,
body .oc-native-section button,
body .oc-native-section .button,
body .oc-native-footer p,
body .oc-native-footer a,
body .oc-native-footer span,
body .oc-motivation p,
body .oc-motivation a,
body .oc-motivation span,
body .oc-motivation button,
.onchinese-home p,
.onchinese-home a,
.onchinese-home span,
.onchinese-home button,
.onchinese-home input,
.onchinese-home select,
.onchinese-home .button {
  font-family: var(--oc-font) !important;
  letter-spacing: 0 !important;
}

body .oc-native-section .button,
body .oc-native-header .button,
body .oc-motivation button,
body .oc-motivation .oc-choice,
.onchinese-home .oc-btn,
.onchinese-home .button {
  font-weight: 700 !important;
}

/* Mobile hardening for the UX Builder homepage. */
@media (max-width: 760px) {
  html,
  body {
    max-width: 100%;
    overflow-x: hidden;
  }

  .onchinese-home,
  body .oc-native-section,
  body .oc-native-footer,
  body .oc-native-section .section-content,
  body .oc-native-footer .section-content {
    max-width: 100%;
    overflow-x: clip;
  }

  body .oc-native-section .row,
  body .oc-native-footer .row,
  .oc-native-hero-row,
  .oc-native-learning-row,
  .oc-native-heading-row,
  .oc-native-trust-row,
  .oc-native-card-grid,
  .oc-native-chip-row,
  .oc-native-category-grid,
  .oc-native-collection-row,
  .oc-native-motivation-row,
  .oc-native-cta-row,
  .oc-native-footer-row,
  .oc-native-footer-bottom {
    width: calc(100% - 24px) !important;
    max-width: calc(100% - 24px) !important;
    min-width: 0 !important;
    margin-right: auto !important;
    margin-left: auto !important;
  }

  .oc-native-hero-row,
  .oc-native-learning-row {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
    min-height: auto !important;
    padding: 34px 0 38px !important;
  }

  .oc-native-hero-row > .col,
  .oc-native-learning-row > .col,
  .oc-native-card-grid > .col,
  .oc-native-chip-row > .col,
  .oc-native-category-grid > .col,
  .oc-native-collection-row > .col,
  .oc-native-motivation-row > .col,
  .oc-native-footer-row > .col,
  .oc-native-footer-bottom > .col {
    width: 100% !important;
    max-width: none !important;
    flex: 0 0 auto !important;
    flex-basis: auto !important;
    padding-right: 0 !important;
    padding-left: 0 !important;
  }

  .oc-native-hero-title h1,
  .oc-launch-banner h1 {
    max-width: 100% !important;
    font-size: clamp(30px, 8.4vw, 36px) !important;
    line-height: 1.13 !important;
    overflow-wrap: anywhere;
  }

  .oc-native-section-title h2,
  .oc-native-heading-row h2,
  .oc-native-trust-row h2,
  .oc-motivation h2 {
    max-width: 100% !important;
    font-size: clamp(26px, 7.4vw, 34px) !important;
    line-height: 1.16 !important;
    overflow-wrap: anywhere;
  }

  .oc-native-hero-lead p,
  .oc-native-section-lead p,
  .oc-native-section-intro p,
  .oc-launch-banner p {
    max-width: 100% !important;
    font-size: 16px !important;
    line-height: 1.65 !important;
    overflow-wrap: anywhere;
  }

  .oc-banner-label,
  .oc-kicker,
  .oc-native-heading-row .oc-eyebrow {
    max-width: 100%;
    white-space: normal;
    line-height: 1.25 !important;
  }

  .oc-native-button-row,
  .oc-native-points-row,
  .oc-native-proof-row {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 10px !important;
    width: 100% !important;
    max-width: 100% !important;
    margin: 18px 0 0 !important;
  }

  .oc-native-button-row > .col,
  .oc-native-button-row > .col-inner,
  .oc-native-points-row > .col,
  .oc-native-proof-row > .col {
    width: 100% !important;
    max-width: none !important;
    flex-basis: auto !important;
    padding: 0 !important;
  }

  .oc-native-button-row .button,
  .oc-banner-actions .oc-btn,
  .oc-hero__buttons .oc-btn,
  .oc-native-card .button {
    width: 100% !important;
    min-height: 48px !important;
    margin: 0 !important;
    padding-right: 14px !important;
    padding-left: 14px !important;
    white-space: normal !important;
    text-align: center;
    line-height: 1.2 !important;
  }

  .oc-native-point,
  .oc-proof-item,
  .oc-choice,
  .oc-category {
    width: 100%;
    min-width: 0;
  }

  .oc-native-card > .col-inner {
    min-height: auto !important;
    padding: 18px !important;
  }

  .oc-course-card > .col-inner,
  .oc-teacher-card > .col-inner,
  .oc-quote-card > .col-inner,
  .oc-system-card > .col-inner {
    min-height: auto !important;
  }

  .oc-feature-media,
  .oc-path-card__media,
  .oc-course-thumb,
  .oc-teacher-cover {
    min-width: 0;
  }

  .oc-edu-visual {
    width: 100%;
    min-height: 330px !important;
    overflow: hidden;
  }

  .oc-edu-visual::before,
  .oc-edu-visual::after {
    width: 100%;
    height: 260px;
  }

  .oc-edu-card {
    width: 100% !important;
    min-height: 292px !important;
    padding: 18px !important;
  }

  .oc-edu-card__head {
    align-items: flex-start !important;
    flex-direction: column;
    gap: 10px !important;
  }

  .oc-edu-seal img {
    width: 48px !important;
    height: 48px !important;
  }

  .oc-edu-badge {
    align-self: flex-start;
  }

  .oc-edu-scene {
    height: 190px !important;
  }

  .oc-open-book {
    width: min(220px, 78vw) !important;
  }

  .oc-edu-chip {
    max-width: min(44vw, 150px);
    min-height: 32px !important;
    padding: 7px 9px !important;
    font-size: 11px !important;
    line-height: 1.15 !important;
    white-space: normal !important;
  }

  .oc-edu-chip--hsk {
    left: 4px !important;
    top: 112px !important;
  }

  .oc-edu-chip--teacher {
    right: 4px !important;
    top: 92px !important;
  }

  .oc-edu-chip--live {
    right: 8px !important;
    bottom: 28px !important;
  }

  .oc-edu-chip--quiz {
    left: 8px !important;
    bottom: 24px !important;
  }

  .oc-hero-visual {
    min-height: 420px !important;
    overflow: hidden;
  }

  .oc-hero-card {
    width: 100%;
    max-width: 100%;
  }

  .oc-lesson-grid,
  .oc-collection,
  .oc-motivation,
  .oc-footer__grid,
  .oc-footer__bottom {
    grid-template-columns: 1fr !important;
  }

  .oc-native-cta-row {
    padding: 26px 18px !important;
  }

  .oc-footer__grid,
  .oc-footer__bottom {
    display: grid !important;
    gap: 22px !important;
  }
}

@media (max-width: 420px) {
  .oc-native-hero-title h1,
  .oc-launch-banner h1 {
    font-size: 31px !important;
  }

  .oc-native-section-title h2,
  .oc-native-heading-row h2,
  .oc-native-trust-row h2,
  .oc-motivation h2 {
    font-size: 28px !important;
  }
}