/* ===== 中越北海旅游文化公司 - Global Stylesheet ===== */

:root {
    /* Brand Colors - 取自 Logo */
    --primary-deep: #0B4D8C;
    --primary: #1565C0;
    --primary-light: #4A90D9;
    --secondary: #26A69A;
    --secondary-light: #4DB6AC;
    --accent-gold: #D4AF37;
    --accent-red: #E63946;
    --accent-green: #2E7D5B;

    /* Neutrals */
    --bg: #FAFBFC;
    --bg-alt: #F4F7FB;
    --surface: #FFFFFF;
    --border: #E5EBF2;
    --text: #1A2B4A;
    --text-soft: #4A5A75;
    --text-mute: #8A99B0;

    /* Gradients */
    --grad-brand: linear-gradient(135deg, #0B4D8C 0%, #1565C0 45%, #26A69A 100%);
    --grad-ocean: linear-gradient(180deg, rgba(11,77,140,0.85) 0%, rgba(38,166,154,0.75) 100%);
    --grad-hero: linear-gradient(120deg, rgba(11,77,140,0.65) 0%, rgba(21,101,192,0.4) 50%, rgba(38,166,154,0.55) 100%);
    --grad-gold: linear-gradient(135deg, #D4AF37 0%, #F4D06F 100%);

    /* Layout */
    --container: 1240px;
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(11,77,140,0.06);
    --shadow: 0 8px 24px rgba(11,77,140,0.08);
    --shadow-lg: 0 18px 48px rgba(11,77,140,0.12);
    --shadow-hover: 0 24px 60px rgba(11,77,140,0.18);

    /* Motion */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Be Vietnam Pro', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Top Bar ===== */
.topbar {
    background: var(--primary-deep);
    color: #C5DCEF;
    font-size: 13px;
    padding: 8px 0;
}
.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}
.topbar-info { display: flex; gap: 24px; align-items: center; }
.topbar-info span { display: flex; gap: 6px; align-items: center; }
.topbar-lang {
    display: flex;
    gap: 6px;
    align-items: center;
}
.lang-btn {
    color: #C5DCEF;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    border: 1px solid transparent;
    transition: all 0.25s var(--ease);
}
.lang-btn.active {
    background: var(--accent-gold);
    color: var(--primary-deep);
    font-weight: 600;
}
.lang-btn:not(.active):hover { border-color: rgba(255,255,255,0.3); color: #fff; }

/* ===== Header / Navigation ===== */
.header {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s var(--ease);
}
.header.scrolled { box-shadow: var(--shadow); }
.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    padding-bottom: 14px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
}
.logo-img {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    position: relative;
    transition: transform 0.4s var(--ease);
}
.logo:hover .logo-img { transform: rotate(-4deg) scale(1.05); }
.logo-img svg { width: 100%; height: 100%; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text .cn { font-size: 19px; font-weight: 800; color: var(--primary-deep); letter-spacing: 1.5px; }
.logo-text .vn { font-size: 10px; color: var(--secondary); letter-spacing: 1px; margin-top: 4px; font-weight: 600; }

.nav {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav a {
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    border-radius: var(--radius-sm);
    position: relative;
    transition: color 0.25s var(--ease);
}
.nav a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--grad-brand);
    border-radius: 2px;
    transition: width 0.3s var(--ease);
}
.nav a:hover, .nav a.active { color: var(--primary); }
.nav a:hover::after, .nav a.active::after { width: 24px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s var(--ease);
    cursor: pointer;
}
.btn-primary {
    background: var(--grad-brand);
    color: #fff;
    box-shadow: 0 6px 18px rgba(21,101,192,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(21,101,192,0.45); }
.btn-ghost {
    background: rgba(255,255,255,0.15);
    color: #fff;
    border: 1.5px solid rgba(255,255,255,0.4);
    backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255,255,255,0.25); border-color: rgba(255,255,255,0.7); }
.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; }

.mobile-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--border);
    color: var(--primary-deep);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 760px;
    display: flex;
    align-items: center;
    overflow: hidden;
    color: #fff;
    padding-bottom: 80px;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('https://images.unsplash.com/photo-1528127269322-539801943592?w=1920&q=80');
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    transition: transform 8s var(--ease);
}
.hero:hover .hero-bg { transform: scale(1.08); }
.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(105deg, rgba(7,40,75,0.78) 0%, rgba(11,77,140,0.55) 45%, rgba(11,77,140,0.25) 75%, rgba(38,166,154,0.35) 100%),
        linear-gradient(180deg, rgba(7,40,75,0.15) 0%, rgba(7,40,75,0.55) 100%);
}
.hero-particles {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(2px 2px at 15% 20%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1.5px 1.5px at 45% 60%, rgba(255,255,255,0.4), transparent),
        radial-gradient(2px 2px at 75% 30%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 85% 80%, rgba(255,255,255,0.4), transparent);
    animation: float 24s ease-in-out infinite;
    pointer-events: none;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-24px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 70px 0 40px;
    max-width: 720px;
}
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 18px 8px 14px;
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255,255,255,0.22);
    border-radius: 40px;
    font-size: 12px;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.92);
    margin-bottom: 32px;
    animation: fadeUp 0.8s var(--ease-out);
}
.hero-eyebrow::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent-gold);
    border-radius: 50%;
    box-shadow: 0 0 14px var(--accent-gold);
    animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}
.hero h1 {
    font-size: clamp(42px, 5.2vw, 68px);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.5px;
    margin-bottom: 28px;
    animation: fadeUp 0.9s var(--ease-out) 0.1s both;
    text-shadow: 0 4px 30px rgba(0,0,0,0.25);
}
.hero h1 .line-1 { font-weight: 300; letter-spacing: 4px; display: block; margin-bottom: 8px; }
.hero h1 .line-2 { font-weight: 800; display: block; }
.hero h1 .accent {
    background: linear-gradient(120deg, #F4D06F 0%, #FCE9A0 50%, #F4D06F 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
}
.hero .subtitle-vn {
    font-size: clamp(15px, 1.6vw, 18px);
    font-weight: 300;
    color: rgba(255,255,255,0.78);
    margin-bottom: 24px;
    letter-spacing: 0.5px;
    font-style: italic;
    animation: fadeUp 1s var(--ease-out) 0.2s both;
    max-width: 580px;
}
.hero p.lead {
    font-size: 15px;
    line-height: 1.85;
    color: rgba(255,255,255,0.88);
    max-width: 540px;
    margin-bottom: 40px;
    font-weight: 300;
    animation: fadeUp 1.1s var(--ease-out) 0.3s both;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; animation: fadeUp 1.2s var(--ease-out) 0.4s both; }
.hero-cta .btn-primary { padding: 14px 28px; font-size: 14px; letter-spacing: 0.5px; }
.hero-cta .btn-ghost { padding: 14px 24px; font-size: 14px; letter-spacing: 0.5px; }

/* Hero scroll indicator */
.hero-scroll {
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.7);
    font-size: 11px;
    letter-spacing: 2px;
    animation: fadeUp 1.5s var(--ease-out) 0.8s both;
}
.hero-scroll .line {
    width: 1.5px;
    height: 38px;
    background: linear-gradient(180deg, rgba(255,255,255,0.6), transparent);
    position: relative;
    overflow: hidden;
}
.hero-scroll .line::after {
    content: '';
    position: absolute;
    top: -100%;
    width: 100%;
    height: 50%;
    background: linear-gradient(180deg, transparent, #F4D06F);
    animation: scrollDot 2.2s ease-in-out infinite;
}
@keyframes scrollDot {
    0% { top: -100%; }
    100% { top: 200%; }
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(28px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Hero stats - separate floating panel below hero */
.hero-stats-wrap {
    position: relative;
    margin-top: -68px;
    z-index: 3;
    padding: 0 24px;
}
.hero-stats {
    max-width: var(--container);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 60px rgba(7,40,75,0.18);
    overflow: hidden;
    animation: fadeUp 1.3s var(--ease-out) 0.6s both;
}
.hero-stat {
    padding: 28px 24px;
    text-align: center;
    border-right: 1px solid var(--border);
    position: relative;
    transition: background 0.3s var(--ease);
}
.hero-stat:last-child { border-right: none; }
.hero-stat:hover { background: var(--bg-alt); }
.hero-stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 40px;
    height: 3px;
    background: var(--grad-brand);
    border-radius: 0 0 4px 4px;
    transition: transform 0.4s var(--ease);
}
.hero-stat:hover::before { transform: translateX(-50%) scaleX(1); }
.hero-stat .num {
    font-size: 36px;
    font-weight: 800;
    background: var(--grad-brand);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}
.hero-stat .num small { font-size: 18px; color: var(--accent-gold); -webkit-text-fill-color: var(--accent-gold); margin-left: 2px; }
.hero-stat .label {
    font-size: 13px;
    color: var(--text-soft);
    font-weight: 500;
    letter-spacing: 0.5px;
}
.hero-stat .label-en {
    display: block;
    font-size: 10px;
    color: var(--text-mute);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 4px;
    font-weight: 600;
}

/* Search panel (floating over hero bottom) */
.hero-search {
    position: relative;
    z-index: 3;
    margin: 24px auto 0;
    max-width: 1100px;
    padding: 24px;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    display: grid;
    grid-template-columns: 2fr 1.5fr 1.5fr 1fr auto;
    gap: 16px;
    align-items: end;
}
.search-field { display: flex; flex-direction: column; }
.search-field label { font-size: 12px; color: var(--text-mute); font-weight: 600; margin-bottom: 6px; letter-spacing: 0.5px; text-transform: uppercase; }
.search-field select, .search-field input {
    border: none;
    background: var(--bg-alt);
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text);
    font-family: inherit;
    transition: all 0.2s var(--ease);
}
.search-field select:focus, .search-field input:focus { outline: none; background: #fff; box-shadow: 0 0 0 2px var(--primary-light); }

/* ===== Sections ===== */
.section { padding: 90px 0; }
.section-alt { background: var(--bg-alt); }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-eyebrow {
    display: inline-block;
    color: var(--secondary);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 14px;
    position: relative;
}
.section-eyebrow::before, .section-eyebrow::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 28px;
    height: 1.5px;
    background: var(--secondary);
    opacity: 0.4;
}
.section-eyebrow::before { right: calc(100% + 12px); }
.section-eyebrow::after { left: calc(100% + 12px); }
.section-title {
    font-size: clamp(28px, 3.6vw, 42px);
    font-weight: 800;
    color: var(--primary-deep);
    margin-bottom: 14px;
    letter-spacing: -0.5px;
}
.section-subtitle { color: var(--text-soft); font-size: 16px; line-height: 1.7; }
.section-subtitle .vn { color: var(--text-mute); font-style: italic; font-size: 14px; display: block; margin-top: 4px; }

/* ===== Dual Direction Tabs (Two Way Tourism) ===== */
.direction-tabs {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 48px;
    background: var(--surface);
    padding: 6px;
    border-radius: 40px;
    box-shadow: var(--shadow);
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}
.direction-tab {
    flex: 1;
    padding: 14px 24px;
    border-radius: 34px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.35s var(--ease);
}
.direction-tab.active {
    background: var(--grad-brand);
    color: #fff;
    box-shadow: 0 8px 20px rgba(21,101,192,0.3);
}
.direction-tab .flag {
    width: 22px;
    height: 16px;
    border-radius: 2px;
    object-fit: cover;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.direction-tab .arrow {
    font-size: 16px;
    transition: transform 0.3s var(--ease);
}
.direction-tab.active .arrow { animation: arrowSlide 1.4s ease-in-out infinite; }
@keyframes arrowSlide {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(4px); }
}

/* ===== Destination Cards Grid ===== */
.destinations-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.dest-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--surface);
    box-shadow: var(--shadow);
    transition: all 0.4s var(--ease);
    cursor: pointer;
}
.dest-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.dest-card .img {
    position: relative;
    height: 260px;
    overflow: hidden;
}
.dest-card .img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s var(--ease);
}
.dest-card:hover .img img { transform: scale(1.08); }
.dest-card .img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.55) 100%);
}
.dest-card .badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    color: var(--primary-deep);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 6px;
}
.dest-card .badge.hot { color: var(--accent-red); }
.dest-card .badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: currentColor;
    border-radius: 50%;
}
.dest-card .price-tag {
    position: absolute;
    bottom: 16px;
    right: 16px;
    background: var(--grad-gold);
    color: var(--primary-deep);
    padding: 8px 14px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 14px;
    z-index: 2;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}
.dest-card .price-tag small { font-size: 10px; font-weight: 500; opacity: 0.7; }
.dest-card .content { padding: 22px; }
.dest-card h3 { font-size: 19px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.dest-card .vn-name { font-size: 13px; color: var(--secondary); font-style: italic; margin-bottom: 14px; }
.dest-card .meta { display: flex; gap: 18px; padding: 14px 0; border-top: 1px dashed var(--border); border-bottom: 1px dashed var(--border); margin-bottom: 14px; font-size: 13px; color: var(--text-soft); }
.dest-card .meta span { display: flex; align-items: center; gap: 6px; }
.dest-card .desc { font-size: 14px; line-height: 1.6; color: var(--text-soft); margin-bottom: 16px; min-height: 44px; }
.dest-card .footer-row { display: flex; align-items: center; justify-content: space-between; }
.dest-card .rating { display: flex; align-items: center; gap: 6px; color: var(--accent-gold); font-weight: 700; }
.dest-card .rating .stars { letter-spacing: 1px; }
.dest-card .link-arrow {
    width: 36px; height: 36px; border-radius: 50%; background: var(--bg-alt); display: flex; align-items: center; justify-content: center; color: var(--primary); transition: all 0.3s var(--ease);
}
.dest-card:hover .link-arrow { background: var(--grad-brand); color: #fff; transform: rotate(-45deg); }

/* ===== Feature Strip ===== */
.features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature {
    text-align: center;
    padding: 36px 22px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all 0.35s var(--ease);
    position: relative;
    overflow: hidden;
}
.feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--grad-brand);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease);
}
.feature:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature:hover::before { transform: scaleX(1); }
.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--bg-alt);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    color: var(--primary);
    transition: all 0.35s var(--ease);
}
.feature:hover .feature-icon { background: var(--grad-brand); color: #fff; transform: rotate(-8deg) scale(1.08); }
.feature h4 { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.feature .vn { font-size: 12px; color: var(--secondary); font-style: italic; margin-bottom: 12px; }
.feature p { font-size: 14px; color: var(--text-soft); line-height: 1.6; }

/* ===== Tour Packages ===== */
.tours-wrapper {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 28px;
}
.tour-feature {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 540px;
    color: #fff;
    background: #000;
    display: flex;
    align-items: flex-end;
    padding: 36px;
}
.tour-feature img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.85; transition: transform 0.7s var(--ease); }
.tour-feature::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(11,77,140,0.9) 0%, transparent 60%);
}
.tour-feature:hover img { transform: scale(1.06); }
.tour-feature .content { position: relative; z-index: 2; max-width: 480px; }
.tour-feature .tag { display: inline-block; background: var(--grad-gold); color: var(--primary-deep); padding: 6px 14px; border-radius: 20px; font-size: 12px; font-weight: 700; margin-bottom: 16px; }
.tour-feature h3 { font-size: 30px; font-weight: 800; margin-bottom: 8px; }
.tour-feature .vn { font-size: 15px; color: rgba(255,255,255,0.8); margin-bottom: 14px; font-style: italic; }
.tour-feature p { font-size: 15px; line-height: 1.6; margin-bottom: 22px; color: rgba(255,255,255,0.92); }
.tour-feature .info-row { display: flex; gap: 24px; margin-bottom: 24px; }
.tour-feature .info-row span { font-size: 13px; display: flex; gap: 6px; align-items: center; color: rgba(255,255,255,0.85); }

.tour-list { display: flex; flex-direction: column; gap: 18px; }
.tour-item {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 18px;
    padding: 18px;
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all 0.3s var(--ease);
    cursor: pointer;
}
.tour-item:hover { box-shadow: var(--shadow); border-color: var(--primary-light); transform: translateX(4px); }
.tour-item .thumb { width: 130px; height: 130px; border-radius: var(--radius-sm); overflow: hidden; position: relative; }
.tour-item .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.tour-item:hover .thumb img { transform: scale(1.08); }
.tour-item .info h4 { font-size: 16px; font-weight: 700; margin-bottom: 4px; color: var(--text); }
.tour-item .info .vn-sub { font-size: 12px; color: var(--secondary); margin-bottom: 10px; font-style: italic; }
.tour-item .info .duration { font-size: 12px; color: var(--text-mute); display: flex; gap: 12px; margin-bottom: 10px; }
.tour-item .info .price { display: flex; align-items: baseline; gap: 6px; }
.tour-item .info .price .num { font-size: 22px; font-weight: 800; color: var(--accent-red); }
.tour-item .info .price .unit { font-size: 12px; color: var(--text-mute); }

/* ===== Cultural Exchange ===== */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
    align-items: center;
}
.culture-text h2 { font-size: 36px; font-weight: 800; color: var(--primary-deep); margin-bottom: 12px; letter-spacing: -0.5px; }
.culture-text .vn-title { font-size: 18px; color: var(--secondary); font-style: italic; margin-bottom: 24px; }
.culture-text p { font-size: 16px; color: var(--text-soft); line-height: 1.85; margin-bottom: 22px; }
.culture-points { list-style: none; }
.culture-points li { display: flex; gap: 14px; align-items: flex-start; padding: 14px 0; border-bottom: 1px dashed var(--border); }
.culture-points li:last-child { border-bottom: none; }
.culture-points .icon { width: 36px; height: 36px; flex-shrink: 0; background: var(--grad-brand); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; }
.culture-points strong { display: block; font-size: 15px; color: var(--text); margin-bottom: 2px; }
.culture-points span { font-size: 13px; color: var(--text-mute); }

.culture-visual {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 14px;
    height: 540px;
}
.culture-visual .item {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow);
    transition: all 0.4s var(--ease);
}
.culture-visual .item:hover { transform: scale(1.03); z-index: 2; box-shadow: var(--shadow-hover); }
.culture-visual .item img { width: 100%; height: 100%; object-fit: cover; }
.culture-visual .item:nth-child(1) { grid-row: span 2; }
.culture-visual .item-label {
    position: absolute;
    bottom: 14px;
    left: 14px;
    right: 14px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 700;
    color: var(--primary-deep);
}
.culture-visual .item-label .vn { display: block; font-size: 10px; color: var(--secondary); font-weight: 500; }

/* ===== News & Articles ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.news-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.35s var(--ease);
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news-card .img { position: relative; height: 200px; overflow: hidden; }
.news-card .img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.news-card:hover .img img { transform: scale(1.08); }
.news-card .category {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--grad-brand);
    color: #fff;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 11px;
    font-weight: 600;
}
.news-card .content { padding: 22px; }
.news-card .meta { display: flex; gap: 14px; font-size: 12px; color: var(--text-mute); margin-bottom: 10px; }
.news-card h4 { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 8px; line-height: 1.4; transition: color 0.2s var(--ease); }
.news-card:hover h4 { color: var(--primary); }
.news-card .vn-sub { font-size: 12px; color: var(--secondary); font-style: italic; margin-bottom: 12px; }
.news-card p { font-size: 14px; color: var(--text-soft); line-height: 1.6; }

/* ===== Testimonials ===== */
.testimonials-wrap {
    overflow: hidden;
    position: relative;
}
.testimonials {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.testimonial {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 32px;
    position: relative;
    box-shadow: var(--shadow);
    border-top: 4px solid transparent;
    transition: all 0.35s var(--ease);
}
.testimonial:hover { transform: translateY(-4px); border-top-color: var(--accent-gold); }
.testimonial::before {
    content: '"';
    position: absolute;
    top: 12px;
    right: 24px;
    font-size: 80px;
    color: var(--primary-light);
    opacity: 0.15;
    font-family: Georgia, serif;
    line-height: 1;
}
.testimonial p { font-size: 15px; line-height: 1.7; color: var(--text-soft); margin-bottom: 22px; }
.testimonial .author { display: flex; gap: 12px; align-items: center; }
.testimonial .avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--grad-brand);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}
.testimonial .info strong { display: block; font-size: 14px; color: var(--text); }
.testimonial .info span { font-size: 12px; color: var(--text-mute); }
.testimonial .flag-pair { display: flex; gap: 4px; align-items: center; margin-top: 4px; font-size: 12px; color: var(--secondary); }

/* ===== CTA Banner ===== */
.cta-banner {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    padding: 70px 56px;
    background: var(--grad-brand);
    color: #fff;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 36px;
    align-items: center;
}
.cta-banner::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(244,208,111,0.25), transparent 70%);
    border-radius: 50%;
}
.cta-banner h2 { font-size: 34px; font-weight: 800; line-height: 1.2; margin-bottom: 10px; position: relative; }
.cta-banner .vn { font-size: 17px; color: rgba(255,255,255,0.85); font-style: italic; margin-bottom: 18px; position: relative; }
.cta-banner p { font-size: 16px; line-height: 1.7; color: rgba(255,255,255,0.9); max-width: 540px; position: relative; }
.cta-form { position: relative; display: flex; flex-direction: column; gap: 12px; }
.cta-form input { padding: 16px 20px; border-radius: var(--radius-sm); border: none; font-size: 15px; background: rgba(255,255,255,0.95); color: var(--text); font-family: inherit; }
.cta-form input::placeholder { color: var(--text-mute); }
.cta-form button { padding: 16px; border-radius: var(--radius-sm); background: var(--accent-gold); color: var(--primary-deep); font-weight: 700; font-size: 15px; transition: all 0.3s var(--ease); }
.cta-form button:hover { background: #F4D06F; transform: translateY(-2px); }
.cta-form .hint { font-size: 12px; color: rgba(255,255,255,0.7); text-align: center; }

/* ===== Footer ===== */
.footer {
    background: var(--primary-deep);
    color: #BAD0E6;
    padding-top: 70px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .logo-row { display: flex; gap: 12px; align-items: center; margin-bottom: 18px; }
.footer-brand .logo-img { background: rgba(255,255,255,0.1); }
.footer-brand .name { color: #fff; font-size: 16px; font-weight: 700; }
.footer-brand .vn-name { color: var(--secondary-light); font-size: 12px; }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-bottom: 18px; }
.footer-social { display: flex; gap: 10px; }
.footer-social a {
    width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; color: #fff; transition: all 0.3s var(--ease);
}
.footer-social a:hover { background: var(--accent-gold); color: var(--primary-deep); transform: translateY(-3px); }

.footer h5 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; letter-spacing: 0.5px; }
.footer ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer ul a { font-size: 14px; color: #BAD0E6; transition: color 0.2s var(--ease); display: inline-flex; align-items: center; gap: 8px; }
.footer ul a:hover { color: var(--accent-gold); }
.footer ul a::before { content: '›'; color: var(--secondary); }

.footer-contact { font-size: 14px; }
.footer-contact div { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 14px; }
.footer-contact svg { color: var(--secondary-light); flex-shrink: 0; margin-top: 3px; }

.footer-bottom {
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: rgba(186,208,230,0.7);
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom a { color: rgba(186,208,230,0.7); margin-left: 18px; }
.footer-bottom a:hover { color: #fff; }

/* ===== Reveal Animations ===== */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* ===== Floating Action ===== */
.fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.fab-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--grad-brand);
    color: #fff;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s var(--ease);
    position: relative;
}
.fab-btn:hover { transform: scale(1.1); box-shadow: 0 14px 32px rgba(21,101,192,0.4); }
.fab-btn .tooltip {
    position: absolute;
    right: calc(100% + 14px);
    top: 50%;
    transform: translateY(-50%);
    background: var(--primary-deep);
    color: #fff;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s var(--ease);
}
.fab-btn:hover .tooltip { opacity: 1; }

/* ===== Page Hero (inner pages) ===== */
.page-hero {
    position: relative;
    color: #fff;
    padding: 90px 0 80px;
    overflow: hidden;
    text-align: center;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--grad-brand);
}
.page-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('https://images.unsplash.com/photo-1528127269322-539801943592?w=1600&q=70');
    background-size: cover;
    background-position: center;
    opacity: 0.25;
    mix-blend-mode: overlay;
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(32px, 4.4vw, 50px); font-weight: 800; margin-bottom: 12px; }
.page-hero .vn { font-size: 18px; color: rgba(255,255,255,0.85); font-style: italic; margin-bottom: 18px; }
.page-hero .breadcrumb { font-size: 14px; color: rgba(255,255,255,0.8); }
.page-hero .breadcrumb a { color: rgba(255,255,255,0.8); }
.page-hero .breadcrumb a:hover { color: #fff; }

/* ===== Filter Bar ===== */
.filter-bar {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 18px 24px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 36px;
}
.filter-chip {
    padding: 8px 18px;
    border-radius: 22px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-soft);
    background: var(--bg-alt);
    transition: all 0.25s var(--ease);
    cursor: pointer;
}
.filter-chip.active, .filter-chip:hover {
    background: var(--grad-brand);
    color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .destinations-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
    .tours-wrapper { grid-template-columns: 1fr; }
    .culture-grid { grid-template-columns: 1fr; }
    .cta-banner { grid-template-columns: 1fr; padding: 50px 32px; }
    .hero-search { grid-template-columns: 1fr 1fr; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .hero-stat { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 16px; }
    .features { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; padding: 14px; box-shadow: var(--shadow-lg); }
    .nav.open { display: flex; }
    .nav a { width: 100%; padding: 14px 18px; border-bottom: 1px solid var(--border); }
    .mobile-toggle { display: flex; align-items: center; justify-content: center; }
    .header > .container > .btn { display: none; }
    .destinations-grid, .news-grid { grid-template-columns: 1fr; }
    .testimonials { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .topbar-info { display: none; }
    .hero { min-height: auto; }
    .hero-content { padding: 50px 0 70px; }
    .hero-search { display: none; }
    .direction-tabs { flex-direction: column; border-radius: var(--radius); }
    .direction-tab { border-radius: var(--radius); }
    .section { padding: 60px 0; }
    .culture-visual { height: 400px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}