:root { --primary: #6366f1; --primary-dark: #4f46e5; --dark: #1e293b; --light: #f8fafc; --accent: #f59e0b; --success: #10b981; }
        body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; background: var(--light); color: #334155; }
        .navbar { background: rgba(15,23,42,0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); padding: 0; position: fixed; width: 100%; z-index: 1000; border-bottom: 1px solid rgba(255,255,255,0.06); transition: all 0.3s; }
        .navbar.scrolled { background: rgba(15,23,42,0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
        .navbar-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
        .navbar-brand .logo-img { height: 56px; width: auto; border-radius: 6px; }
        .navbar-brand .brand-text { font-size: 24px; font-weight: 800; color: #fff !important; letter-spacing: 1px; line-height: 1.2; }
        .navbar-brand .brand-text span { color: #818cf8; }
        .navbar-brand .tagline { display: block; font-size: 11px; color: #64748b; font-weight: 400; letter-spacing: 2px; margin-top: -2px; }
        .navbar .nav-link { color: #94a3b8 !important; margin: 0 1px; font-size: 15px; padding: 32px 18px !important; position: relative; font-weight: 500; transition: all 0.3s; }
        .navbar .nav-link::after { content: ''; position: absolute; bottom: 22px; left: 18px; right: 18px; height: 2px; background: linear-gradient(90deg, #6366f1, #818cf8); transform: scaleX(0); transition: transform 0.3s; border-radius: 1px; }
        .navbar .nav-link:hover, .navbar .nav-link.active { color: #fff !important; background: transparent !important; }
        .navbar .nav-link:hover::after, .navbar .nav-link.active::after { transform: scaleX(1); }
        .navbar .dropdown-toggle::after { display: none; }
        .navbar .dropdown-toggle i.chevron { font-size: 10px; margin-left: 4px; transition: transform 0.3s; }
        .navbar .dropdown-toggle:hover i.chevron { transform: rotate(180deg); }
        .navbar .dropdown-menu { background: rgba(15,23,42,0.98); backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; padding: 8px 0; margin-top: 8px; box-shadow: 0 20px 50px rgba(0,0,0,0.4); min-width: 200px; }
        .navbar .dropdown-item { color: #94a3b8; padding: 10px 20px; font-size: 13px; transition: all 0.2s; background: transparent; }
        .navbar .dropdown-item:hover { color: #fff; background: rgba(99,102,241,0.15); padding-left: 24px; }
        .navbar .dropdown-divider { border-color: rgba(255,255,255,0.06); margin: 4px 0; }
        .btn-nav-login { border: 1px solid rgba(255,255,255,0.2); color: #fff; border-radius: 50px; padding: 8px 22px; font-size: 13px; font-weight: 600; transition: all 0.3s; background: transparent; }
        .btn-nav-login:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.4); color: #fff; }
        .btn-nav-register { background: linear-gradient(135deg, #6366f1, #4f46e5); color: #fff; border: none; border-radius: 50px; padding: 9px 24px; font-size: 13px; font-weight: 600; transition: all 0.3s; box-shadow: 0 4px 15px rgba(99,102,241,0.3); }
        .btn-nav-register:hover { background: linear-gradient(135deg, #4f46e5, #4338ca); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(99,102,241,0.4); color: #fff; }

        /* Hero */
        .hero { background: linear-gradient(135deg, #1e293b 0%, #0f172a 50%, #1e1b4b 100%); padding: 140px 0 100px; color: #fff; position: relative; overflow: hidden; }
        .hero::before { content: ''; position: absolute; top: -30%; right: -10%; width: 700px; height: 700px; background: radial-gradient(circle, rgba(99,102,241,0.12) 0%, transparent 70%); border-radius: 50%; }
        .hero::after { content: ''; position: absolute; bottom: -20%; left: -5%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(245,158,11,0.08) 0%, transparent 70%); border-radius: 50%; }
        .hero h1 { font-size: 42px; font-weight: 800; line-height: 1.3; margin-bottom: 24px; position: relative; z-index: 1; }
        .hero h1 span { background: linear-gradient(135deg, #818cf8, #6366f1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .hero p { font-size: 16px; color: #94a3b8; max-width: 560px; margin-bottom: 32px; line-height: 1.8; position: relative; z-index: 1; }

        /* Sections */
        section { padding: 70px 0; }
        .section-title { text-align: center; margin-bottom: 50px; }
        .section-title h2 { font-weight: 800; font-size: 30px; color: var(--dark); margin-bottom: 12px; }
        .section-title p { color: #64748b; font-size: 15px; max-width: 640px; margin: 0 auto; }

        /* About highlight */
        .about-highlight { background: #fff; border-radius: 20px; padding: 40px; box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
        .about-highlight p { font-size: 15px; line-height: 2; color: #334155; }
        .about-stat { text-align: center; padding: 16px; }
        .about-stat .num { font-size: 32px; font-weight: 800; color: var(--primary); }
        .about-stat .lbl { color: #64748b; font-size: 13px; margin-top: 4px; }

        /* Base Cards (3 bases) */
        .base-card { background: #fff; border-radius: 16px; padding: 32px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); height: 100%; border-top: 4px solid var(--primary); transition: all 0.3s; }
        .base-card:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
        .base-card h4 { font-weight: 700; margin-bottom: 12px; }
        .base-card .addr { color: var(--primary); font-size: 13px; margin-bottom: 12px; }
        .base-card p { color: #64748b; font-size: 14px; line-height: 1.7; }

        /* Tool Cards */
        .tool-card { background: #fff; border-radius: 14px; padding: 24px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); height: 100%; transition: all 0.3s; text-align: center; }
        .tool-card:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.08); }
        .tool-icon { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; font-size: 22px; color: #fff; }
        .tool-card h6 { font-weight: 700; margin-bottom: 6px; font-size: 14px; }
        .tool-card p { color: #64748b; font-size: 12px; line-height: 1.6; margin: 0; }
        .tool-card .badge-soon { font-size: 10px; padding: 3px 8px; margin-top: 8px; }

        /* Course Cards */
        .course-card { background: #fff; border-radius: 16px; padding: 28px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); height: 100%; }
        .course-card .icon-circle { width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; color: #fff; margin-bottom: 14px; }
        .course-card h5 { font-weight: 700; margin-bottom: 8px; }
        .course-card p { color: #64748b; font-size: 13px; line-height: 1.7; }

        /* News */
        .news-item { background: #fff; border-radius: 12px; padding: 20px 24px; margin-bottom: 14px; box-shadow: 0 1px 3px rgba(0,0,0,0.04); display: flex; align-items: center; gap: 18px; transition: all 0.2s; }
        .news-item:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
        .news-date { background: var(--primary); color: #fff; padding: 6px 12px; border-radius: 8px; text-align: center; min-width: 56px; font-weight: 700; font-size: 12px; line-height: 1.3; }
        .news-item h6 { font-weight: 700; margin: 0 0 4px; }
        .news-item p { color: #64748b; margin: 0; font-size: 13px; }

        /* Token / Selection cards */
        .link-card { background: linear-gradient(135deg, #6366f1, #4f46e5); border-radius: 16px; padding: 36px; color: #fff; text-align: center; }
        .link-card.dark { background: linear-gradient(135deg, #1e293b, #0f172a); }
        .link-card h4 { font-weight: 700; margin-bottom: 10px; }
        .link-card p { opacity: 0.85; font-size: 14px; margin-bottom: 24px; }
        .link-card .btn { border-radius: 30px; }

        /* Reservation Form */
        .reserve-form { background: #fff; border-radius: 20px; padding: 40px; box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
        .reserve-form label { font-weight: 600; font-size: 14px; margin-bottom: 4px; }
        .reserve-form .form-control, .reserve-form .form-select { border-radius: 10px; padding: 10px 14px; border: 1px solid #e2e8f0; }
        .reserve-form .form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }

        /* Footer */
        footer { background: var(--dark); color: #94a3b8; padding: 50px 0 30px; }
        footer h5 { color: #fff; font-weight: 700; margin-bottom: 16px; }
        footer a { color: #94a3b8; text-decoration: none; font-size: 13px; }
        footer a:hover { color: #fff; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 36px; padding-top: 18px; text-align: center; font-size: 12px; }

        html { scroll-behavior: smooth; }
/* Logo hover glow */
.navbar-brand:hover .logo-img { filter: drop-shadow(0 0 12px rgba(99,102,241,0.5)); transition: filter 0.3s; }
.navbar-brand .logo-img { transition: filter 0.3s; }

/* Navbar entrance animation */
@keyframes navSlideDown { from { transform: translateY(-100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.navbar { animation: navSlideDown 0.6s ease-out; }

/* Subtle gradient border bottom glow */
.navbar::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(99,102,241,0.3), transparent); }

/* Floating reservation button */
.float-reserve { position: fixed; right: 20px; bottom: 100px; z-index: 9999; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; width: 70px; height: 70px; background: linear-gradient(135deg, #6366f1, #4f46e5); color: #fff; border: none; border-radius: 50%; cursor: grab; box-shadow: 0 6px 25px rgba(99,102,241,0.4); text-decoration: none; font-size: 12px; font-weight: 700; animation: floatPulse 3s ease-in-out infinite; }
.float-reserve i { font-size: 24px; }
.float-reserve .float-text { font-size: 11px; line-height: 1; white-space: nowrap; }
@keyframes floatPulse { 0%,100% { box-shadow: 0 6px 25px rgba(99,102,241,0.4); } 50% { box-shadow: 0 8px 35px rgba(99,102,241,0.7); } }
.float-reserve:hover { transform: translateY(-2px) scale(1.05); box-shadow: 0 10px 30px rgba(99,102,241,0.6); color: #fff; }
.float-reserve:active { cursor: grabbing; transform: scale(0.95); }
.float-reserve i { font-size: 24px; }
.float-reserve .float-text { font-size: 11px; line-height: 1; }

/* Hero Slideshow */
@keyframes slideShow {
    0%, 22%   { transform: translateX(0); }
    28%, 47%  { transform: translateX(-25%); }
    53%, 72%  { transform: translateX(-50%); }
    78%, 97%  { transform: translateX(-75%); }
    100%      { transform: translateX(0); }
}