:root {
      --navy-950: #07172c;
      --navy-900: #0b1f3a;
      --navy-800: #12365f;
      --blue-700: #1259a7;
      --blue-600: #1769c2;
      --blue-500: #2d82d8;
      --blue-100: #dceeff;
      --blue-50: #eff7ff;
      --cyan-400: #56c8e8;
      --ink: #142235;
      --muted: #5d6c7e;
      --line: #d9e4ef;
      --white: #ffffff;
      --off-white: #f8fbff;
      --yellow: #ffd24a;
      --green: #24a878;
      --green-dark: #1c8d67;
      --red: #ff1744;
      --red-dark: #e3113f;
      --shadow-sm: 0 8px 28px rgba(11, 31, 58, .08);
      --shadow-md: 0 18px 55px rgba(11, 31, 58, .14);
      --radius-sm: 12px;
      --radius-md: 20px;
      --radius-lg: 30px;
      --container: 1180px;
      --header-height: 74px;
    }

    *, *::before, *::after { box-sizing: border-box; }

    html {
      scroll-behavior: smooth;
      scroll-padding-top: calc(var(--header-height) + 18px);
    }

    body {
      margin: 0;
      color: var(--ink);
      background: var(--white);
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      font-size: 16px;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

    body.menu-open { overflow: hidden; }

    a { color: inherit; }
    img { max-width: 100%; }
    button, a { -webkit-tap-highlight-color: transparent; }
    button { font: inherit; }

    :focus-visible {
      outline: 3px solid var(--cyan-400);
      outline-offset: 4px;
    }

    .skip-link {
      position: fixed;
      top: 8px;
      left: 8px;
      z-index: 9999;
      padding: 10px 16px;
      border-radius: 8px;
      color: var(--white);
      background: var(--navy-950);
      transform: translateY(-150%);
      transition: transform .2s ease;
    }

    .skip-link:focus { transform: translateY(0); }

    .container {
      width: min(calc(100% - 32px), var(--container));
      margin-inline: auto;
    }

    .section { padding: 78px 0; }

    .section-grid {
      background-color: var(--off-white);
      background-image:
        linear-gradient(rgba(18, 89, 167, .075) 1px, transparent 1px),
        linear-gradient(90deg, rgba(18, 89, 167, .075) 1px, transparent 1px);
      background-size: 28px 28px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      margin: 0 0 14px;
      padding: 4px 11px;
      border: 1px solid #c6def6;
      border-radius: 7px;
      color: var(--blue-700);
      background: var(--blue-50);
      font-size: .78rem;
      font-weight: 800;
      letter-spacing: .105em;
      line-height: 1.3;
      text-transform: uppercase;
    }

    .eyebrow-light {
      color: #bfe7ff;
      border-color: rgba(191, 231, 255, .28);
      background: rgba(255, 255, 255, .08);
    }

    .youtube-inline-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      margin-left: 6px;
      padding: 6px 10px;
      border-radius: 999px;
      color: var(--white);
      background: var(--red);
      text-decoration: none;
      box-shadow: 0 8px 18px rgba(255, 23, 68, .22);
      transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
    }

    .youtube-inline-badge:hover {
      background: var(--red-dark);
      transform: translateY(-1px);
      box-shadow: 0 10px 22px rgba(255, 23, 68, .28);
    }

    .youtube-inline-icon {
      display: grid;
      width: 16px;
      height: 16px;
      place-items: center;
      border-radius: 999px;
      background: rgba(255, 255, 255, .18);
      font-size: .65rem;
      line-height: 1;
    }

    .section-heading {
      max-width: 740px;
      margin-bottom: 36px;
    }

    .section-heading.centered {
      margin-inline: auto;
      text-align: center;
    }

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

    h1, h2, h3 {
      color: var(--navy-950);
      line-height: 1.12;
      letter-spacing: -.035em;
    }

    h1 {
      max-width: 820px;
      margin-bottom: 24px;
      font-size: clamp(2.35rem, 7vw, 5rem);
      font-weight: 850;
    }

    h2 {
      margin-bottom: 16px;
      font-size: clamp(2rem, 5vw, 3.45rem);
      font-weight: 820;
    }

    h3 {
      margin-bottom: 10px;
      font-size: clamp(1.2rem, 2vw, 1.5rem);
      font-weight: 800;
    }

    .lead {
      color: var(--muted);
      font-size: clamp(1.05rem, 2vw, 1.2rem);
      line-height: 1.7;
    }

    .accent { color: var(--blue-600); }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 50px;
      padding: 12px 21px;
      border: 1px solid transparent;
      border-radius: 12px;
      font-size: .95rem;
      font-weight: 800;
      line-height: 1.25;
      text-decoration: none;
      cursor: pointer;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }

    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 26px rgba(11, 31, 58, .16);
    }

    .btn-primary {
      color: var(--white);
      background: var(--green);
      box-shadow: 0 8px 22px rgba(36, 168, 120, .25);
    }

    .btn-primary:hover { background: var(--green-dark); }

    .btn-secondary {
      color: var(--navy-900);
      border-color: var(--line);
      background: var(--white);
    }

    .btn-secondary:hover { border-color: #aac7e3; }

    .btn-light {
      color: var(--navy-950);
      background: var(--white);
    }

    .btn-youtube {
      color: var(--white);
      background: var(--red);
      box-shadow: 0 10px 28px rgba(255, 23, 68, .26);
    }

    .btn-youtube:hover { background: var(--red-dark); }

    .btn-icon {
      width: 19px;
      height: 19px;
      flex: 0 0 auto;
    }

    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      height: var(--header-height);
      border-bottom: 1px solid rgba(217, 228, 239, .85);
      background: rgba(255, 255, 255, .92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      transition: box-shadow .2s ease;
    }

    .site-header.scrolled { box-shadow: 0 8px 24px rgba(11, 31, 58, .08); }

    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      color: var(--navy-950);
      font-size: 1rem;
      font-weight: 850;
      letter-spacing: -.02em;
      text-decoration: none;
    }

    .brand-mark {
      display: grid;
      width: 40px;
      height: 40px;
      place-items: center;
      border-radius: 11px;
      color: var(--white);
      background: var(--navy-900);
      font-family: Georgia, serif;
      font-size: .96rem;
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12);
    }

    .nav-menu {
      display: none;
      align-items: center;
      gap: 4px;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .nav-menu a {
      display: block;
      padding: 10px 12px;
      border-radius: 9px;
      color: #34465a;
      font-size: .9rem;
      font-weight: 700;
      text-decoration: none;
      transition: color .2s ease, background .2s ease;
    }

    .nav-menu a:hover {
      color: var(--blue-700);
      background: var(--blue-50);
    }

    .nav-cta { display: none; }

    .menu-toggle {
      display: grid;
      width: 44px;
      height: 44px;
      place-items: center;
      border: 1px solid var(--line);
      border-radius: 10px;
      color: var(--navy-900);
      background: var(--white);
      cursor: pointer;
    }

    .menu-toggle svg { width: 22px; height: 22px; }

    .mobile-menu {
      position: fixed;
      inset: var(--header-height) 0 auto 0;
      z-index: 999;
      display: grid;
      gap: 6px;
      padding: 18px 16px 24px;
      border-bottom: 1px solid var(--line);
      background: var(--white);
      box-shadow: var(--shadow-md);
      opacity: 0;
      visibility: hidden;
      transform: translateY(-12px);
      transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
    }

    .mobile-menu.open {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .mobile-menu a:not(.btn) {
      padding: 11px 12px;
      border-radius: 9px;
      color: var(--navy-900);
      font-weight: 750;
      text-decoration: none;
    }

    .mobile-menu a:not(.btn):hover { background: var(--blue-50); }
    .mobile-menu .btn { margin-top: 8px; }

    /* Hero */
    .hero {
      position: relative;
      overflow: hidden;
      padding: 66px 0 72px;
      background-color: var(--white);
      background-image:
        linear-gradient(rgba(18, 89, 167, .08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(18, 89, 167, .08) 1px, transparent 1px);
      background-size: 28px 28px;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(255, 255, 255, .97) 0%, rgba(255, 255, 255, .9) 48%, rgba(255, 255, 255, .47) 100%);
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      display: grid;
      gap: 48px;
      align-items: center;
    }

    .hero-copy { position: relative; z-index: 2; }

    .hero-kicker {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 22px;
    }

    .hero-tag {
      padding: 5px 10px;
      border: 1px solid #c8ddf2;
      border-radius: 6px;
      color: var(--navy-800);
      background: rgba(255, 255, 255, .88);
      font-size: .76rem;
      font-weight: 800;
      letter-spacing: .045em;
      text-transform: uppercase;
    }

    .hero-subtitle {
      max-width: 720px;
      margin-bottom: 29px;
      color: #465970;
      font-size: clamp(1.05rem, 2.5vw, 1.28rem);
      font-weight: 580;
    }

    .hero-actions {
      display: flex;
      flex-direction: column;
      align-items: stretch;
      gap: 12px;
    }

    .trust-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 18px;
      margin: 24px 0 0;
      padding: 0;
      color: #3d5168;
      font-size: .9rem;
      font-weight: 700;
      list-style: none;
    }

    .trust-list li {
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

    .check {
      display: grid;
      width: 20px;
      height: 20px;
      place-items: center;
      border-radius: 6px;
      color: var(--white);
      background: var(--green);
      font-size: .72rem;
      line-height: 1;
    }

    .hero-visual {
      position: relative;
      width: min(100%, 480px);
      margin-inline: auto;
      padding: 16px;
    }

    .board {
      position: relative;
      min-height: 396px;
      overflow: hidden;
      padding: 26px;
      border: 9px solid #d7e0e8;
      border-radius: 20px;
      background: #fbfdff;
      box-shadow: var(--shadow-md), inset 0 0 20px rgba(11, 31, 58, .04);
      transform: rotate(-1.5deg);
    }

    .board::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(18, 89, 167, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(18, 89, 167, .045) 1px, transparent 1px);
      background-size: 24px 24px;
      pointer-events: none;
    }

    .equation {
      position: relative;
      z-index: 1;
      margin: 0 0 20px;
      color: var(--blue-700);
      font-family: Georgia, "Times New Roman", serif;
      font-size: clamp(1.45rem, 4vw, 2.15rem);
      font-style: italic;
      line-height: 1.4;
    }

    .equation:nth-child(2) { margin-left: 20%; color: #16836a; }
    .equation:nth-child(3) { margin-left: 8%; color: var(--navy-800); }

    .graph-sketch {
      position: absolute;
      right: 23px;
      bottom: 26px;
      z-index: 2;
      width: 145px;
      height: 105px;
    }

    .board-note {
      position: absolute;
      right: -2px;
      bottom: 0;
      z-index: 3;
      max-width: 190px;
      padding: 12px 15px;
      border-radius: 12px;
      color: var(--navy-950);
      background: var(--yellow);
      font-size: .9rem;
      font-weight: 850;
      line-height: 1.25;
      box-shadow: 0 12px 30px rgba(11, 31, 58, .18);
      transform: rotate(2deg);
    }

    .hero-stat {
      position: absolute;
      top: 0;
      left: 0;
      z-index: 3;
      padding: 12px 15px;
      border: 1px solid #c9def2;
      border-radius: 12px;
      color: var(--navy-900);
      background: var(--white);
      font-size: .82rem;
      font-weight: 800;
      box-shadow: var(--shadow-sm);
    }

    .hero-stat strong {
      display: block;
      color: var(--blue-600);
      font-size: 1.15rem;
    }

    /* About */
    .about-grid {
      display: grid;
      gap: 42px;
      align-items: start;
    }

    .about-copy .lead { max-width: 680px; }

    .credentials {
      display: grid;
      gap: 12px;
      margin-top: 28px;
    }

    .credential {
      display: flex;
      gap: 13px;
      align-items: flex-start;
      padding: 15px;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      background: var(--white);
    }

    .credential-icon {
      display: grid;
      width: 40px;
      height: 40px;
      flex: 0 0 auto;
      place-items: center;
      border-radius: 10px;
      color: var(--blue-700);
      background: var(--blue-50);
      font-weight: 900;
    }

    .credential strong { display: block; color: var(--navy-950); }
    .credential span { color: var(--muted); font-size: .9rem; }

    .method-card {
      padding: 24px;
      border: 1px solid #cfe0f0;
      border-radius: var(--radius-lg);
      background: var(--navy-900);
      box-shadow: var(--shadow-md);
    }

    .method-card h3 { color: var(--white); }
    .method-card > p { color: #b9cbe0; }

    .method-steps {
      display: grid;
      gap: 12px;
      margin-top: 22px;
    }

    .method-step {
      display: grid;
      grid-template-columns: 40px 1fr;
      gap: 13px;
      align-items: center;
      padding: 14px;
      border: 1px solid rgba(255, 255, 255, .1);
      border-radius: 13px;
      background: rgba(255, 255, 255, .055);
    }

    .method-step .step-number {
      display: grid;
      width: 40px;
      height: 40px;
      place-items: center;
      border-radius: 10px;
      color: #ffffff !important;
      -webkit-text-fill-color: #ffffff;
      opacity: 1;
      background: var(--cyan-400);
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .2);
      font-weight: 900;
    }

    .method-step strong { display: block; color: var(--white); }
    .method-step span { color: #adc2d9; font-size: .88rem; }

    /* Offer */
    .offer-grid {
      display: grid;
      gap: 18px;
    }

    .subject-card {
      position: relative;
      overflow: hidden;
      padding: 26px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      box-shadow: var(--shadow-sm);
    }

    .subject-card::before {
      content: "";
      position: absolute;
      inset: 0 0 auto 0;
      height: 5px;
      background: var(--blue-600);
    }

    .subject-card.physics::before { background: var(--cyan-400); }

    .subject-head {
      display: flex;
      gap: 15px;
      align-items: center;
      margin-bottom: 16px;
    }

    .subject-icon {
      display: grid;
      width: 54px;
      height: 54px;
      flex: 0 0 auto;
      place-items: center;
      border-radius: 14px;
      color: var(--blue-700);
      background: var(--blue-50);
      font-family: Georgia, serif;
      font-size: 1.3rem;
      font-weight: 800;
    }

    .physics .subject-icon { color: #087995; background: #e9faff; }
    .subject-head h3 { margin: 0; font-size: 1.55rem; }
    .subject-card > p { color: var(--muted); }

    .topic-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin: 20px 0 0;
      padding: 0;
      list-style: none;
    }

    .topic-list li {
      padding: 7px 10px;
      border-radius: 7px;
      color: #39506a;
      background: #f0f5fa;
      font-size: .82rem;
      font-weight: 750;
    }

    .levels-bar {
      display: grid;
      gap: 12px;
      margin-top: 18px;
      padding: 20px;
      border: 1px solid #cfe1f3;
      border-radius: var(--radius-md);
      background: var(--blue-50);
    }

    .level {
      display: flex;
      gap: 11px;
      align-items: center;
      color: var(--navy-800);
      font-size: .9rem;
      font-weight: 800;
    }

    .level-mark {
      display: grid;
      width: 28px;
      height: 28px;
      flex: 0 0 auto;
      place-items: center;
      border-radius: 7px;
      color: var(--white);
      background: var(--blue-600);
      font-size: .72rem;
    }

    /* Format */
    .format-grid {
      display: grid;
      gap: 18px;
    }

    .format-card {
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      transition: transform .2s ease, box-shadow .2s ease;
    }

    .format-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
    }

    .format-icon {
      display: grid;
      width: 48px;
      height: 48px;
      margin-bottom: 18px;
      place-items: center;
      border-radius: 13px;
      color: var(--blue-700);
      background: var(--blue-50);
    }

    .format-icon svg { width: 24px; height: 24px; }
    .format-card p { margin-bottom: 0; color: var(--muted); }

    /* Locations */
    .location-layout {
      display: grid;
      gap: 28px;
      align-items: stretch;
    }

    .location-panel {
      display: grid;
      gap: 12px;
    }

    .location-item {
      display: flex;
      gap: 14px;
      align-items: center;
      padding: 17px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: var(--white);
    }

    .pin {
      display: grid;
      width: 43px;
      height: 43px;
      flex: 0 0 auto;
      place-items: center;
      border-radius: 11px;
      color: var(--white);
      background: var(--blue-600);
    }

    .pin svg { width: 21px; height: 21px; }

    .pin:not(.pin-location) svg {
      stroke: var(--white);
      stroke-width: 2.2;
    }

    .pin-location {
      color: #e53935;
      border: 1px solid #ffcaca;
      background: #fff1f1;
      box-shadow: inset 0 0 0 1px rgba(229, 57, 53, .04);
    }

    .pin-location svg {
      width: 23px;
      height: 23px;
      stroke: #e53935;
      stroke-width: 2.4;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .location-item strong { display: block; color: var(--navy-950); }
    .location-item span { color: var(--muted); font-size: .9rem; }

    .map-abstract {
      position: relative;
      display: grid;
      min-height: 360px;
      align-self: center;
      place-items: center;
      overflow: hidden;
      padding: 14px;
      border: 1px solid #bfd5e8;
      border-radius: var(--radius-lg);
      background-color: #eaf5ff;
      background-image:
        linear-gradient(rgba(18, 89, 167, .1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(18, 89, 167, .1) 1px, transparent 1px);
      background-size: 32px 32px;
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, .75), var(--shadow-sm);
    }

    .location-chart {
      display: block;
      width: 100%;
      height: auto;
      overflow: visible;
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }

    .chart-axis {
      stroke: #7fa3c5;
      stroke-width: 2;
      vector-effect: non-scaling-stroke;
    }

    .chart-axis-label {
      fill: var(--navy-800);
      font-size: 17px;
      font-weight: 850;
      font-style: italic;
    }

    .chart-tick {
      stroke: #9ab8d4;
      stroke-width: 1.5;
      vector-effect: non-scaling-stroke;
    }

    .chart-guide {
      stroke: rgba(18, 89, 167, .32);
      stroke-width: 1.5;
      stroke-dasharray: 6 7;
      vector-effect: non-scaling-stroke;
    }

    .chart-area { fill: url(#route-area); }

    .chart-route-glow {
      fill: none;
      stroke: rgba(45, 130, 216, .15);
      stroke-width: 14;
      stroke-linecap: round;
      vector-effect: non-scaling-stroke;
    }

    .chart-route {
      fill: none;
      stroke: url(#route-line);
      stroke-width: 6;
      stroke-linecap: round;
      vector-effect: non-scaling-stroke;
    }

    .chart-point-halo { fill: rgba(23, 105, 194, .15); }

    .chart-point {
      fill: var(--white);
      stroke: var(--blue-600);
      stroke-width: 4;
      vector-effect: non-scaling-stroke;
    }

    .chart-card {
      fill: var(--white);
      stroke: #bfd4e8;
      stroke-width: 1.5;
      vector-effect: non-scaling-stroke;
    }

    .chart-card-icon { fill: var(--blue-600); }

    .chart-city-name {
      fill: var(--navy-950);
      font-size: 15px;
      font-weight: 850;
      letter-spacing: -.01em;
    }

    .chart-city-meta {
      fill: var(--muted);
      font-size: 10px;
      font-weight: 650;
    }

    /* YouTube */
    .youtube-section {
      position: relative;
      overflow: hidden;
      padding: 78px 0;
      color: var(--white);
      background: var(--navy-950);
    }

    .youtube-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(255, 255, 255, .055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .055) 1px, transparent 1px);
      background-size: 30px 30px;
      pointer-events: none;
    }

    .youtube-wrap {
      position: relative;
      display: grid;
      gap: 32px;
      align-items: center;
    }

    .youtube-copy h2 { color: var(--white); }
    .youtube-copy .lead { max-width: 670px; color: #c1d2e5; }

    .youtube-card {
      position: relative;
      padding: 24px;
      border: 1px solid rgba(86, 200, 232, .38);
      border-radius: var(--radius-md);
      color: inherit;
      background: linear-gradient(145deg, rgba(22, 57, 96, .97), rgba(9, 27, 50, .98));
      box-shadow: 0 24px 60px rgba(0, 0, 0, .28), inset 0 1px 0 rgba(255, 255, 255, .08);
      text-decoration: none;
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }

    .youtube-card:hover {
      border-color: rgba(86, 200, 232, .7);
      box-shadow: 0 28px 70px rgba(0, 0, 0, .34), 0 0 0 1px rgba(86, 200, 232, .12);
      transform: translateY(-3px);
    }

    .youtube-screen {
      display: grid;
      min-height: 220px;
      place-items: center;
      border: 1px solid rgba(86, 200, 232, .34);
      border-radius: 14px;
      background-color: #153b68;
      background-image:
        linear-gradient(rgba(86, 200, 232, .09) 1px, transparent 1px),
        linear-gradient(90deg, rgba(86, 200, 232, .09) 1px, transparent 1px),
        linear-gradient(145deg, rgba(45, 130, 216, .13), transparent 65%);
      background-size: 24px 24px, 24px 24px, 100% 100%;
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08), inset 0 18px 45px rgba(7, 23, 44, .2);
    }

    .play-button {
      display: grid;
      width: 76px;
      height: 56px;
      place-items: center;
      border: 1px solid rgba(255, 255, 255, .18);
      border-radius: 16px;
      color: var(--white);
      background: #ff1744;
      box-shadow: 0 0 0 7px rgba(255, 23, 68, .08), 0 12px 32px rgba(255, 23, 68, .38);
      transition: transform .2s ease, background .2s ease;
    }

    .youtube-card:hover .play-button {
      background: #ff0a3d;
      transform: scale(1.04);
    }

    .play-button svg {
      display: block;
      width: 28px;
      height: 28px;
      margin: 0;
    }

    .channel-row {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      align-items: center;
      margin-top: 18px;
      padding: 2px 3px 0;
    }

    .channel-row strong { display: block; color: var(--white); }
    .channel-row span { color: #b9cce0; font-size: .85rem; }

    /* Pricing */
    .pricing-layout {
      display: grid;
      gap: 24px;
      align-items: center;
    }

    .price-card {
      padding: 28px;
      border: 1px solid #c6ddef;
      border-radius: var(--radius-lg);
      background: var(--white);
      box-shadow: var(--shadow-md);
    }

    .price-value {
      display: flex;
      gap: 8px;
      align-items: baseline;
      margin: 10px 0 22px;
      color: var(--navy-950);
    }

    .price-value strong {
      font-size: clamp(3rem, 10vw, 4.8rem);
      line-height: 1;
      letter-spacing: -.06em;
    }

    .price-value span { color: var(--muted); font-weight: 750; }

    .price-features {
      display: grid;
      gap: 11px;
      margin: 0 0 25px;
      padding: 0;
      list-style: none;
    }

    .price-features li {
      display: flex;
      gap: 9px;
      align-items: center;
      color: #3e5269;
      font-weight: 650;
    }

    .price-card .btn { width: 100%; }

    .contact-copy {
      padding: 8px 0;
    }

    .contact-number {
      display: inline-block;
      margin: 6px 0 18px;
      color: var(--green);
      font-size: clamp(1.8rem, 7vw, 3.2rem);
      font-weight: 900;
      letter-spacing: -.045em;
      line-height: 1.1;
      text-decoration: none;
    }

    .contact-number:hover { color: var(--green-dark); }

    .contact-note {
      max-width: 580px;
      color: var(--muted);
    }

    /* Gallery */
    .gallery-section {
      padding: 82px 0 92px;
      background: var(--white);
    }

    .gallery-head {
      display: grid;
      gap: 20px;
      align-items: end;
      margin-bottom: 32px;
    }

    .gallery-head .section-heading { margin-bottom: 0; }

    .gallery-count {
      justify-self: start;
      padding: 9px 12px;
      border: 1px solid var(--line);
      border-radius: 9px;
      color: var(--muted);
      font-size: .85rem;
      font-weight: 750;
      background: var(--off-white);
    }

    .gallery-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 14px;
    }

    .gallery-item {
      position: relative;
      display: none;
      overflow: hidden;
      min-height: 245px;
      margin: 0;
      border: 1px solid var(--line);
      border-radius: 16px;
      background-color: #edf5fc;
      background-image:
        linear-gradient(rgba(18, 89, 167, .08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(18, 89, 167, .08) 1px, transparent 1px);
      background-size: 24px 24px;
      box-shadow: 0 8px 22px rgba(11, 31, 58, .07);
      cursor: pointer;
    }

    .gallery-item:nth-child(-n+6),
    .gallery-grid.show-all .gallery-item { display: block; }

    .gallery-item img {
      position: absolute;
      inset: 0;
      z-index: 2;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0;
      transition: opacity .25s ease, transform .35s ease;
    }

    .gallery-item.loaded img { opacity: 1; }
    .gallery-item.loaded:hover img { transform: scale(1.025); }

    .gallery-fallback {
      position: absolute;
      inset: 0;
      z-index: 1;
      display: grid;
      place-content: center;
      gap: 9px;
      padding: 28px;
      color: var(--navy-800);
      text-align: center;
    }

    .fallback-formula {
      font-family: Georgia, serif;
      font-size: 2.2rem;
      font-style: italic;
      color: var(--blue-600);
    }

    .gallery-fallback strong { font-size: .93rem; }
    .gallery-fallback span { color: var(--muted); font-size: .78rem; }

    .gallery-item figcaption {
      position: absolute;
      inset: auto 10px 10px;
      z-index: 3;
      padding: 10px 12px;
      border: 1px solid rgba(255, 255, 255, .35);
      border-radius: 10px;
      color: var(--white);
      background: rgba(7, 23, 44, .78);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      font-size: .8rem;
      font-weight: 750;
      opacity: 0;
      transform: translateY(6px);
      transition: opacity .2s ease, transform .2s ease;
    }

    .gallery-item.loaded figcaption { opacity: 1; transform: translateY(0); }

    .gallery-more {
      display: flex;
      justify-content: center;
      margin-top: 26px;
    }

    .gallery-note {
      max-width: 720px;
      margin: 24px auto 0;
      padding: 13px 15px;
      border: 1px solid #cfe1f3;
      border-radius: 11px;
      color: #4b6077;
      background: var(--blue-50);
      font-size: .84rem;
      text-align: center;
    }

    .gallery-note code {
      color: var(--blue-700);
      font-weight: 800;
    }

    /* Lightbox */
    .lightbox {
      position: fixed;
      inset: 0;
      z-index: 3000;
      display: grid;
      place-items: center;
      padding: 66px 16px 24px;
      background: rgba(3, 12, 24, .94);
      opacity: 0;
      visibility: hidden;
      transition: opacity .2s ease, visibility .2s ease;
    }

    .lightbox.open { opacity: 1; visibility: visible; }

    .lightbox-image {
      display: block;
      max-width: min(1120px, 94vw);
      max-height: 78vh;
      border-radius: 13px;
      box-shadow: 0 20px 70px rgba(0, 0, 0, .5);
    }

    .lightbox-caption {
      margin: 14px 0 0;
      color: #dce9f7;
      text-align: center;
    }

    .lightbox-close {
      position: absolute;
      top: 16px;
      right: 16px;
      display: grid;
      width: 44px;
      height: 44px;
      place-items: center;
      border: 1px solid rgba(255, 255, 255, .3);
      border-radius: 10px;
      color: var(--white);
      background: rgba(255, 255, 255, .1);
      font-size: 1.4rem;
      cursor: pointer;
    }

    /* Footer */
    .site-footer {
      padding: 56px 0 26px;
      color: #c6d6e7;
      background: var(--navy-950);
    }

    .footer-grid {
      display: grid;
      gap: 32px;
      padding-bottom: 36px;
    }

    .footer-brand .brand { margin-bottom: 15px; color: var(--white); }
    .footer-brand p { max-width: 440px; color: #9fb4ca; }

    .footer-title {
      margin-bottom: 12px;
      color: var(--white);
      font-size: .82rem;
      font-weight: 850;
      letter-spacing: .09em;
      text-transform: uppercase;
    }

    .footer-links {
      display: grid;
      gap: 8px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .footer-links a {
      color: #b7c9db;
      text-decoration: none;
    }

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

    .footer-youtube {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      margin-top: 8px;
      padding: 13px 15px;
      border: 1px solid rgba(255, 255, 255, .15);
      border-radius: 11px;
      color: var(--white);
      background: rgba(255, 23, 68, .18);
      font-weight: 800;
      text-decoration: none;
    }

    .footer-youtube:hover { background: rgba(255, 23, 68, .28); }

    .footer-bottom {
      display: flex;
      flex-direction: column;
      gap: 8px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 255, 255, .1);
      color: #8199b1;
      font-size: .82rem;
    }

    .mobile-call {
      position: fixed;
      right: 14px;
      bottom: 14px;
      z-index: 900;
      display: flex;
      align-items: center;
      gap: 8px;
      min-height: 48px;
      padding: 11px 15px;
      border-radius: 12px;
      color: var(--white);
      background: var(--green);
      font-size: .86rem;
      font-weight: 850;
      text-decoration: none;
      box-shadow: 0 12px 32px rgba(36, 168, 120, .26);
    }

    .mobile-call svg { width: 18px; height: 18px; }

    @media (min-width: 560px) {
      .hero-actions { flex-direction: row; align-items: center; }
      .gallery-grid { grid-template-columns: repeat(2, 1fr); }
      .gallery-item:nth-child(-n+8) { display: block; }
      .levels-bar { grid-template-columns: repeat(2, 1fr); }
      .footer-bottom { flex-direction: row; justify-content: space-between; }
    }

    @media (min-width: 760px) {
      .section { padding: 96px 0; }
      .hero { padding: 88px 0 96px; }
      .format-grid { grid-template-columns: repeat(3, 1fr); }
      .offer-grid { grid-template-columns: repeat(2, 1fr); }
      .gallery-grid { grid-template-columns: repeat(3, 1fr); }
      .gallery-item { min-height: 265px; }
      .gallery-item:nth-child(-n+9) { display: block; }
      .gallery-head { grid-template-columns: 1fr auto; }
      .gallery-count { justify-self: end; }
      .footer-grid { grid-template-columns: 1.5fr .8fr 1fr; }
      .mobile-call { display: none; }
    }

    @media (min-width: 940px) {
      .nav-menu { display: flex; }
      .nav-cta { display: inline-flex; min-height: 42px; padding: 9px 15px; }
      .menu-toggle, .mobile-menu { display: none; }
      .hero-grid { grid-template-columns: minmax(0, 1.3fr) minmax(360px, .7fr); gap: 30px; }
      .about-grid { grid-template-columns: minmax(0, 1.12fr) minmax(370px, .88fr); gap: 68px; }
      .credentials { grid-template-columns: repeat(2, 1fr); }
      .levels-bar { grid-template-columns: repeat(4, 1fr); }
      .location-layout { grid-template-columns: .85fr 1.15fr; gap: 42px; }
      .youtube-wrap { grid-template-columns: 1.15fr .85fr; gap: 56px; }
      .pricing-layout { grid-template-columns: .78fr 1.22fr; gap: 70px; }
      .gallery-grid { grid-template-columns: repeat(4, 1fr); }
      .gallery-item:nth-child(-n+12) { display: block; }
      .gallery-item:nth-child(1),
      .gallery-item:nth-child(10) { grid-column: span 2; }
      .gallery-item:nth-child(1) { grid-row: span 2; min-height: 544px; }
    }

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