:root {
      --primary: #003580;
      --primary-hover: #002a66;
      --primary-light: rgba(0,53,128,0.08);
      --primary-ring: rgba(0,53,128,0.2);
      --bg-page: #f8fafc;
      --bg-white: #ffffff;
      --bg-dark: #0f172a;
      --border: #e2e8f0;
      --text-dark: #1e293b;
      --text-body: #475569;
      --text-muted: #94a3b8;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.07);
      --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
      --shadow-xl: 0 20px 40px rgba(148,163,184,0.25);
      --shadow-primary: 0 8px 24px rgba(0,53,128,0.22);
      --radius-sm: 0.5rem;
      --radius-md: 0.75rem;
      --radius-lg: 1rem;
      --radius-xl: 1.5rem;
      --radius-full: 9999px;
      --font: 'Inter', sans-serif;
    }

    /* =====================
       RESET & BASE
    ===================== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: var(--font);
      background: var(--bg-page);
      color: var(--text-dark);
      min-height: 100vh;
      line-height: 1.5;
      transition: color 0.3s, background 0.3s;
    }
    a { color: inherit; text-decoration: none; }
    ul { list-style: none; }
    input, select, button { font-family: inherit; }
    img { display: block; width: 100%; object-fit: cover; }
    .material-symbols-outlined {
      font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
    }

    /* =====================
       CONTAINER
    ===================== */
    .container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* =====================
       HEADER
    ===================== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      width: 100%;
      background: rgba(255,255,255,0.82);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 5rem;
    }
    .header-left { display: flex; align-items: center; gap: 3rem; }
    .logo { display: flex; align-items: center; gap: 0.75rem; color: var(--primary); }
    .logo .material-symbols-outlined { font-size: 1.875rem; }
    .logo-text { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.01em; }
    .main-nav { display: none; align-items: center; gap: 2rem; }
    .main-nav a { font-size: 0.875rem; font-weight: 500; transition: color 0.2s; }
    .main-nav a:hover { color: var(--primary); }
    .header-right { display: flex; align-items: center; gap: 1.5rem; }
    .header-search {
      display: none;
      align-items: center;
      background: #f1f5f9;
      border: 1px solid var(--border);
      border-radius: var(--radius-full);
      padding: 0.5rem 1rem;
      gap: 0.5rem;
    }
    .header-search .material-symbols-outlined { color: #64748b; font-size: 0.875rem; }
    .header-search input {
      background: transparent;
      border: none;
      outline: none;
      font-size: 0.875rem;
      width: 12rem;
      color: var(--text-dark);
    }
    .header-search input::placeholder { color: #64748b; }
    .icon-btn {
      background: none;
      border: none;
      cursor: pointer;
      padding: 0.5rem;
      border-radius: var(--radius-full);
      display: flex;
      transition: background 0.2s;
    }
    .icon-btn:hover { background: #f1f5f9; }

    /* =====================
       MAIN
    ===================== */
    .main-content { padding: 2rem 0; }

    /* =====================
       HERO SECTION
    ===================== */
    .tour-hero {
      position: relative;
      height: 500px;
      width: 100%;
      border-radius: var(--radius-xl);
      overflow: hidden;
      margin-bottom: 3rem;
    }
    .tour-hero-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      background-image: url('https://lh3.googleusercontent.com/aida-public/AB6AXuBt2Z9HS7vDOjuYwU2x4yhXYRAFCybXnAPppRp-VYa7vPhYoHB3vrquaMpl0l7CHJoI8FdmPHszxe3olAgUtKOmT1I4k7VSl9vAe-yRptVsrQsrRCuvtWpbhw26reyGKBC9e7HeCi7jh3C5hwqywWmkswesAlMTPXejFZuQ1b40sOcM2OsJPk66GUw9508VUHp5s2IDKx3F_AoNCaiQ_EPZysnx_D7lpRInKVgh7KeMXkA2b6GxIgYgoVT6rajftSwHZdyYqPYeCLc');
    }
    .tour-hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(15,23,42,0.9), rgba(15,23,42,0.2), transparent);
    }
    .tour-hero-content {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 2.5rem;
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
    }
    .hero-breadcrumb {
      display: flex;
      gap: 0.5rem;
      font-size: 0.75rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: #60a5fa;
    }
    .tour-hero-title {
      font-size: clamp(1.75rem, 5vw, 3rem);
      font-weight: 700;
      color: white;
      line-height: 1.15;
    }
    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 1rem;
    }
    .hero-stat {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      background: rgba(255,255,255,0.1);
      backdrop-filter: blur(8px);
      padding: 0.5rem 1rem;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255,255,255,0.2);
    }
    .hero-stat .material-symbols-outlined { color: #60a5fa; }
    .hero-stat .stat-label {
      font-size: 0.625rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: rgba(255,255,255,0.7);
    }
    .hero-stat .stat-value { font-size: 0.875rem; font-weight: 700; color: white; }
    .hero-stat .material-symbols-outlined.star-icon { color: #facc15; }
    .hero-actions { display: flex; gap: 0.75rem; }
    .hero-action-btn {
      background: rgba(255,255,255,0.1);
      backdrop-filter: blur(8px);
      color: white;
      border: 1px solid rgba(255,255,255,0.2);
      padding: 0.75rem;
      border-radius: var(--radius-md);
      cursor: pointer;
      display: flex;
      align-items: center;
      transition: background 0.2s;
    }
    .hero-action-btn:hover { background: rgba(255,255,255,0.2); }

    /* Hero bottom row */
    .tour-hero-bottom {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
    }

    /* =====================
       PAGE LAYOUT
    ===================== */
    .page-layout {
      display: grid;
      grid-template-columns: 1fr;
      gap: 3rem;
    }

    /* =====================
       LEFT COLUMN
    ===================== */
    .detail-column { display: flex; flex-direction: column; gap: 3rem; }

    /* Sticky Nav Tabs */
    .detail-tabs {
      display: flex;
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 5rem;
      background: rgba(248,250,252,0.96);
      backdrop-filter: blur(6px);
      z-index: 40;
      padding-top: 0.5rem;
      overflow-x: auto;
    }
    .detail-tabs::-webkit-scrollbar { display: none; }
    .tab-link {
      padding: 0.75rem 1.5rem;
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--text-muted);
      border-bottom: 2px solid transparent;
      white-space: nowrap;
      cursor: pointer;
      transition: color 0.2s, border-color 0.2s;
      background: none;
      border-top: none;
      border-left: none;
      border-right: none;
      margin-bottom: -1px;
    }
    .tab-link:hover { color: var(--text-dark); }
    .tab-link.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 700; }

    /* Section scroll offset */
    .detail-section { scroll-margin-top: 8rem; }

    /* =====================
       OVERVIEW SECTION
    ===================== */
    .section-title {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 1.5rem;
    }
    .overview-text {
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 1.5rem;
    }
    .overview-features {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1rem;
    }
    .feature-card {
      padding: 1rem;
      border-radius: var(--radius-md);
      background: var(--bg-white);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      gap: 0.5rem;
    }
    .feature-card .material-symbols-outlined { color: var(--primary); }
    .feature-card p { font-size: 0.75rem; font-weight: 600; }

    /* =====================
       ITINERARY SECTION
    ===================== */
    .itinerary-list { display: flex; flex-direction: column; gap: 1.5rem; }
    .itinerary-item {
      position: relative;
      padding-left: 2rem;
      padding-bottom: 2rem;
      border-left: 2px solid var(--primary-ring);
    }
    .itinerary-item:last-child { border-left-color: transparent; padding-bottom: 0; }
    .itinerary-dot {
      position: absolute;
      left: -9px;
      top: 0;
      width: 1rem;
      height: 1rem;
      border-radius: var(--radius-full);
      background: var(--primary);
      box-shadow: 0 0 0 4px var(--primary-ring);
    }
    .itinerary-dot.inactive { background: #cbd5e1; box-shadow: none; }
    .itinerary-card {
      background: var(--bg-white);
      padding: 1.5rem;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: box-shadow 0.2s;
      cursor: pointer;
    }
    .itinerary-card:hover { box-shadow: var(--shadow-md); }
    .itinerary-card-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 1rem;
    }
    .day-label { font-size: 0.875rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
    .day-label.active-day { color: var(--primary); }
    .day-label.inactive-day { color: var(--text-muted); }
    .accordion-icon {
      color: var(--text-muted);
      transition: transform 0.3s;
    }
    .accordion-icon.open { transform: rotate(180deg); }
    .itinerary-card-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.75rem; }
    .itinerary-card-body {
      overflow: hidden;
      transition: max-height 0.35s ease, opacity 0.25s ease;
    }
    .itinerary-card-body.collapsed { max-height: 0; opacity: 0; }
    .itinerary-card-body.expanded { max-height: 500px; opacity: 1; }
    .itinerary-card-text { font-size: 0.875rem; color: var(--text-body); line-height: 1.7; margin-bottom: 1rem; }
    .itinerary-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
    .itinerary-tag {
      padding: 0.2rem 0.75rem;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 0.625rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      border-radius: var(--radius-full);
    }

    /* =====================
       INCLUSIONS SECTION
    ===================== */
    .inclusions-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    .inclusion-card {
      padding: 2rem;
      border-radius: var(--radius-xl);
    }
    .inclusion-card.included { background: rgba(16,185,129,0.05); border: 1px solid rgba(16,185,129,0.2); }
    .inclusion-card.excluded { background: rgba(239,68,68,0.05); border: 1px solid rgba(239,68,68,0.2); }
    .inclusion-card-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; }
    .inclusion-card-header .material-symbols-outlined { font-size: 1.5rem; }
    .inclusion-card.included .material-symbols-outlined { color: #10b981; }
    .inclusion-card.excluded .material-symbols-outlined { color: #ef4444; }
    .inclusion-card h3 { font-size: 1.25rem; font-weight: 700; }
    .inclusion-list { display: flex; flex-direction: column; gap: 1rem; }
    .inclusion-item {
      display: flex;
      align-items: flex-start;
      gap: 0.75rem;
      font-size: 0.875rem;
      color: var(--text-body);
    }
    .inclusion-item .material-symbols-outlined { font-size: 1.125rem; flex-shrink: 0; margin-top: 0.1rem; }
    .inclusion-card.included .inclusion-item .material-symbols-outlined { color: #10b981; }
    .inclusion-card.excluded .inclusion-item .material-symbols-outlined { color: #ef4444; }

    /* =====================
       LOCATION SECTION
    ===================== */
    .map-wrap {
      width: 100%;
      height: 20rem;
      border-radius: var(--radius-xl);
      overflow: hidden;
      background: #e2e8f0;
      position: relative;
    }
    .map-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      background-image: url('https://lh3.googleusercontent.com/aida-public/AB6AXuD2d0kHDuVI1QQ4xULqFLXB-kar52hhPwsSC67NZr3TdGT3epibXwoCqO7TGmwwktkp6azltwc3VlcPpB8ABPGWYZIjl-_h2jPMO6WfBn0DZLGmSohSqPL-RzX_OFPsPU9zgAylUS1yGs_8aFfbi59xR2ySGJGecIcjF18fqLkFF2zych_21DTaW61rwAzB72NyjpK8lwMzKRfoj58M9qRGDogf2jnA76w27Z065JHFHWbw6abUlw20jIGIiAtiYdHb2XD3H6RtWcM');
      opacity: 0.5;
      filter: grayscale(1);
    }
    .map-pin {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .map-pin-card {
      background: var(--bg-white);
      padding: 1rem;
      border-radius: var(--radius-md);
      box-shadow: 0 8px 32px rgba(0,0,0,0.2);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 0.5rem;
      text-align: center;
    }
    .map-pin-card .material-symbols-outlined { color: var(--primary); font-size: 1.875rem; }
    .map-pin-card p { font-size: 0.875rem; font-weight: 700; }
    .map-pin-card button {
      font-size: 0.75rem;
      color: var(--primary);
      font-weight: 700;
      background: none;
      border: none;
      cursor: pointer;
    }
    .map-pin-card button:hover { text-decoration: underline; }

    /* =====================
       SIDEBAR
    ===================== */
    .sidebar-wrap { position: relative; }
    .sidebar-sticky { position: sticky; top: 7rem; display: flex; flex-direction: column; gap: 1.5rem; }

    /* Booking Card */
    .booking-card {
      background: var(--bg-white);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-xl);
      border: 1px solid var(--border);
      overflow: hidden;
    }
    .booking-card-body { padding: 2rem; display: flex; flex-direction: column; gap: 1.5rem; }
    .booking-price-row { display: flex; align-items: flex-end; gap: 0.5rem; }
    .booking-price { font-size: 1.875rem; font-weight: 700; }
    .booking-per-person { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 0.25rem; }
    .booking-fields { display: flex; flex-direction: column; gap: 1rem; }
    .booking-field { display: flex; flex-direction: column; gap: 0.5rem; }
    .booking-field label {
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      color: var(--text-muted);
    }
    .booking-field-input {
      position: relative;
      display: flex;
      align-items: center;
    }
    .booking-field-input .material-symbols-outlined {
      position: absolute;
      left: 1rem;
      color: var(--text-muted);
      font-size: 1.125rem;
      pointer-events: none;
    }
    .booking-field-input select {
      width: 100%;
      padding: 0.75rem 1rem 0.75rem 3rem;
      background: #f1f5f9;
      border: none;
      border-radius: var(--radius-md);
      font-size: 0.875rem;
      color: var(--text-dark);
      outline: none;
      appearance: none;
      cursor: pointer;
      transition: background 0.2s;
    }
    .booking-field-input select:hover { background: #e2e8f0; }
    .booking-field-input select:focus { box-shadow: 0 0 0 2px var(--primary-ring); }

    .booking-summary {
      border-top: 1px solid var(--border);
      padding-top: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .summary-row {
      display: flex;
      justify-content: space-between;
      font-size: 0.875rem;
    }
    .summary-row span:first-child { color: var(--text-muted); }
    .summary-total {
      display: flex;
      justify-content: space-between;
      font-size: 1.125rem;
      font-weight: 700;
      padding-top: 0.75rem;
      border-top: 1px dashed var(--border);
    }
    .summary-total span:last-child { color: var(--primary); }

    .btn-reserve {
      width: 100%;
      background: var(--primary);
      color: white;
      border: none;
      padding: 1rem;
      border-radius: var(--radius-md);
      font-size: 1rem;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      box-shadow: var(--shadow-primary);
      transition: background 0.2s, transform 0.1s;
    }
    .btn-reserve:hover { background: var(--primary-hover); }
    .btn-reserve:active { transform: scale(0.98); }

    .booking-note { text-align: center; font-size: 0.6875rem; color: var(--text-muted); }

    /* Trust Badge */
    .trust-badge {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-xl);
      padding: 1.5rem;
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      box-shadow: var(--shadow-sm);
    }
    .trust-badge .material-symbols-outlined { color: var(--primary); font-size: 1.875rem; flex-shrink: 0; }
    .trust-badge-text p:first-child { font-size: 0.875rem; font-weight: 700; margin-bottom: 0.25rem; }
    .trust-badge-text p:last-child { font-size: 0.75rem; color: var(--text-body); line-height: 1.6; }

    /* =====================
       FOOTER
    ===================== */
    .site-footer {
      background: #f8fafc;
      border-top: 1px solid var(--border);
      margin-top: 5rem;
      padding: 4rem 0 2rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 3rem;
      margin-bottom: 4rem;
    }
    .footer-brand { display: flex; flex-direction: column; gap: 1.5rem; }
    .footer-brand-logo { display: flex; align-items: center; gap: 0.5rem; color: var(--primary); }
    .footer-brand-logo .material-symbols-outlined { font-size: 1.5rem; }
    .footer-brand-logo span.brand-name { font-size: 1.125rem; font-weight: 700; color: var(--text-dark); }
    .footer-brand p { font-size: 0.875rem; color: var(--text-muted); line-height: 1.7; }
    .footer-social { display: flex; gap: 1rem; }
    .footer-social a { color: var(--text-muted); transition: color 0.2s; display: flex; }
    .footer-social a:hover { color: var(--primary); }
    .footer-col h5 {
      font-size: 0.875rem; font-weight: 700; text-transform: uppercase;
      letter-spacing: 0.1em; margin-bottom: 1.5rem;
    }
    .footer-col ul { display: flex; flex-direction: column; gap: 1rem; }
    .footer-col ul li a { font-size: 0.875rem; color: var(--text-muted); transition: color 0.2s; }
    .footer-col ul li a:hover { color: var(--primary); }
    .footer-newsletter p { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 1rem; line-height: 1.6; }
    .newsletter-form { display: flex; gap: 0.5rem; }
    .newsletter-form input {
      flex: 1;
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 0.5rem 1rem;
      font-size: 0.875rem;
      outline: none;
    }
    .newsletter-form input:focus { box-shadow: 0 0 0 2px var(--primary-ring); }
    .newsletter-form button {
      background: var(--primary);
      color: white;
      border: none;
      padding: 0.5rem 1rem;
      border-radius: var(--radius-sm);
      font-size: 0.875rem;
      font-weight: 700;
      cursor: pointer;
      transition: background 0.2s, transform 0.1s;
    }
    .newsletter-form button:hover { background: var(--primary-hover); }
    .newsletter-form button:active { transform: scale(0.98); }
    .footer-bottom {
      padding-top: 2rem;
      border-top: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 1rem;
    }
    .footer-bottom p { font-size: 0.6875rem; color: var(--text-muted); }
    .footer-links { display: flex; gap: 2rem; }
    .footer-links a { font-size: 0.6875rem; color: var(--text-muted); transition: color 0.2s; }
    .footer-links a:hover { color: var(--primary); }

    /* =====================
       RESPONSIVE
    ===================== */
    @media (min-width: 640px) {
      .overview-features { grid-template-columns: repeat(4, 1fr); }
      .inclusions-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (min-width: 768px) {
      .main-nav { display: flex; }
      .header-search { display: flex; }
      .tour-hero-bottom { flex-direction: row; align-items: flex-end; justify-content: space-between; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-bottom { flex-direction: row; justify-content: space-between; }
    }
    @media (min-width: 1024px) {
      .page-layout { grid-template-columns: 8fr 4fr; }
      .footer-grid { grid-template-columns: repeat(4, 1fr); }
    }