/* ===== CSS Variables ===== */
:root {
    /* Colors - Deep Navy & Gold Premium Palette */
    --color-primary: #1B3A5F;
    --color-primary-light: #2A5680;
    --color-primary-dark: #0F2440;
    --color-accent: #C8973F;
    --color-accent-light: #D4A852;
    --color-accent-dark: #A87B2E;
    --color-bg: #FFFFFF;
    --color-bg-light: #F7F9FB;
    --color-bg-dark: #0F2440;
    --color-text: #1A1A2E;
    --color-text-light: #5A6A7A;
    --color-text-muted: #8A9AAB;
    --color-border: #E2E8ED;
    --color-white: #FFFFFF;
    --color-success: #2D8659;
    --color-hot: #E05A47;
    --color-free: #2D8659;
    --color-shadow: rgba(27, 58, 95, 0.08);
    --color-shadow-strong: rgba(27, 58, 95, 0.15);

    /* Typography */
    --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Noto Serif SC', Georgia, serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Transitions */
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 96px; }

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

/* ===== Container & Sections ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: var(--space-xl) 0; }

.section-header { text-align: center; margin-bottom: var(--space-lg); }

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 16px;
    line-height: 1.3;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-light);
    max-width: 640px;
    margin: 0 auto;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
    border: 2px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--color-shadow-strong);
}

.btn-accent {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.btn-accent:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(200, 151, 63, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.35);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-white);
}

.btn-block { width: 100%; }
.btn-sm { padding: 10px 22px; font-size: 0.9rem; }

/* ===== Top Banner ===== */
.top-banner {
    background: linear-gradient(90deg, var(--color-accent-dark), var(--color-accent));
    color: var(--color-white);
    text-align: center;
    padding: 9px 16px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.banner-cta {
    color: var(--color-white);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.banner-cta:hover { opacity: 0.85; }

/* ===== Navigation ===== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.navbar.scrolled { box-shadow: 0 2px 20px var(--color-shadow); }

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.nav-logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 700;
    border-radius: var(--radius-sm);
    font-family: var(--font-serif);
}

.logo-text { display: flex; flex-direction: column; line-height: 1.15; }

.logo-cn { font-size: 1.05rem; font-weight: 700; color: var(--color-primary); display: flex; align-items: baseline; gap: 6px; }

.logo-sub {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: 0.5px;
}

.logo-en { font-size: 0.65rem; color: var(--color-text-muted); letter-spacing: 0.4px; }

.nav-menu { display: flex; align-items: center; gap: 22px; flex-wrap: nowrap; }

/* English mode: tighter nav to keep everything on one line */
html[lang="en"] .nav-menu { gap: 15px; }
html[lang="en"] .nav-link { font-size: 0.82rem; }
html[lang="en"] .nav-cta { padding: 7px 14px; }

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
}

.nav-link:hover { color: var(--color-primary); }

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

.nav-link:hover::after { width: 100%; }

.nav-cta {
    background: var(--color-accent);
    color: var(--color-white) !important;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
}

.nav-cta:hover { background: var(--color-accent-light); }

.nav-cta::after { display: none; }

.nav-right { display: flex; align-items: center; gap: 18px; }

.lang-toggle { display: flex; align-items: center; gap: 4px; font-size: 0.85rem; }

.lang-btn {
    padding: 4px 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: var(--transition);
    border-radius: 4px;
}

.lang-btn.active { color: var(--color-primary); font-weight: 700; }

.lang-divider { color: var(--color-border); font-size: 0.8rem; }

.mobile-toggle { display: none; flex-direction: column; gap: 5px; padding: 4px; }

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    padding: 100px 0 80px;
    background: linear-gradient(135deg, #0F2440 0%, #1B3A5F 55%, #2A5680 100%);
    overflow: hidden;
}

.hero-bg-overlay {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 15% 40%, rgba(200, 151, 63, 0.16) 0%, transparent 45%),
        radial-gradient(circle at 85% 15%, rgba(42, 86, 128, 0.35) 0%, transparent 50%),
        radial-gradient(circle at 50% 90%, rgba(200, 151, 63, 0.07) 0%, transparent 45%);
}

.hero-bg-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 56px;
    align-items: center;
}

.hero-content { max-width: 640px; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 18px;
    background: rgba(200, 151, 63, 0.14);
    border: 1px solid rgba(200, 151, 63, 0.35);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent-light);
    margin-bottom: 22px;
}

.badge-dot {
    width: 7px;
    height: 7px;
    background: var(--color-accent-light);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(212, 168, 82, 0.5); }
    50% { box-shadow: 0 0 0 6px rgba(212, 168, 82, 0); }
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.25;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    letter-spacing: -0.5px;
}

.hero-title-accent {
    background: linear-gradient(120deg, var(--color-accent) 10%, var(--color-accent-light) 90%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.08rem;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.85;
    margin-bottom: 32px;
}

.hero-actions { display: flex; gap: 14px; margin-bottom: 44px; flex-wrap: wrap; }

.hero-stats { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }

.stat-item { display: flex; flex-direction: column; }

.stat-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-accent-light);
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.stat-unit { font-size: 1.2rem; font-weight: 700; }

.stat-label { font-size: 0.82rem; color: rgba(255, 255, 255, 0.6); margin-top: 6px; }

.stat-divider { width: 1px; height: 36px; background: rgba(255, 255, 255, 0.15); }

/* Hero side card */
.hero-side { display: flex; justify-content: flex-end; }

.hero-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    width: 100%;
    max-width: 360px;
    box-shadow: 0 24px 64px rgba(15, 36, 64, 0.4);
}

.hero-card-head {
    padding-bottom: 14px;
    margin-bottom: 18px;
    border-bottom: 1px dashed var(--color-border);
}

.hero-card-head span {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 1px;
}

.hero-card-steps { display: flex; flex-direction: column; gap: 18px; margin-bottom: 24px; }

.mini-step { display: flex; gap: 14px; align-items: flex-start; }

.mini-num {
    width: 26px;
    height: 26px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
}

.mini-step strong { display: block; font-size: 0.95rem; color: var(--color-text); margin-bottom: 2px; }

.mini-step span:not(.mini-num) { font-size: 0.8rem; color: var(--color-text-muted); }

.hero-card .btn { margin-bottom: 12px; }

.hero-card-note { font-size: 0.75rem; color: var(--color-text-muted); text-align: center; }

/* ===== Services Section ===== */
.services-section { background: var(--color-bg); }

.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

.services-grid-6 { grid-template-columns: repeat(3, 1fr); }

.service-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 30px 26px;
    transition: var(--transition);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px var(--color-shadow-strong);
    border-color: var(--color-accent);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(27, 58, 95, 0.08), rgba(200, 151, 63, 0.1));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    color: var(--color-primary);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
}

.service-icon svg { width: 30px; height: 30px; }

.service-card h3 { font-size: 1.12rem; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }

.service-card p { font-size: 0.88rem; color: var(--color-text-light); line-height: 1.65; margin-bottom: 14px; flex-grow: 1; }

.service-link { font-size: 0.85rem; font-weight: 600; color: var(--color-accent); transition: var(--transition); }

.service-card:hover .service-link { color: var(--color-accent-dark); }

/* ===== Courses / Products ===== */
.courses-section { background: var(--color-bg-light); }

.course-filter {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 9px 22px;
    border-radius: 50px;
    border: 1px solid var(--color-border);
    background: var(--color-white);
    color: var(--color-text-light);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.filter-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }

.filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.product-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 26px 24px;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 40px var(--color-shadow-strong);
    border-color: var(--color-accent);
}

.product-card.hide { display: none; }

.product-card-featured {
    border: 2px solid var(--color-accent);
    background: linear-gradient(180deg, rgba(200, 151, 63, 0.04), var(--color-white) 40%);
}

.product-badge {
    position: absolute;
    top: -11px;
    right: 18px;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--color-white);
    white-space: nowrap;
}

.badge-hot { background: var(--color-hot); }
.badge-free { background: var(--color-free); }
.badge-vip { background: var(--color-accent); }

.product-type {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.product-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--color-primary); margin-bottom: 10px; line-height: 1.4; }

.product-desc { font-size: 0.87rem; color: var(--color-text-light); line-height: 1.65; margin-bottom: 16px; }

.product-features { margin-bottom: 20px; flex-grow: 1; }

.product-features li {
    padding: 5px 0 5px 22px;
    font-size: 0.85rem;
    color: var(--color-text);
    position: relative;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 5px;
    width: 15px;
    height: 15px;
    background: rgba(200, 151, 63, 0.14);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    font-weight: 700;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.product-price { display: flex; flex-direction: column; line-height: 1.2; }

.price-current { font-size: 1.5rem; font-weight: 800; color: var(--color-accent-dark); }

.price-from { font-size: 0.8rem; font-weight: 500; }

.price-original {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    text-decoration: line-through;
}

.courses-note {
    text-align: center;
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-top: 28px;
}

/* ===== Practice / Subjects ===== */
.practice-section { background: var(--color-bg); }

.subjects-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.subject-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    background: var(--color-white);
}

.subject-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 40px var(--color-shadow-strong);
}

.subject-head {
    padding: 28px 22px 22px;
    color: var(--color-white);
    position: relative;
}

.subject-math { background: linear-gradient(135deg, #1B3A5F, #2A5680); }
.subject-physics { background: linear-gradient(135deg, #2E5E4E, #3D7A63); }
.subject-chemistry { background: linear-gradient(135deg, #6B4E8E, #8B6AB0); }
.subject-chinese { background: linear-gradient(135deg, #A87B2E, #C8973F); }

.subject-head h3 { font-size: 1.4rem; font-weight: 700; }

.subject-hot {
    position: absolute;
    top: 14px;
    right: 14px;
    background: var(--color-hot);
    color: var(--color-white);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 50px;
}

.subject-body { padding: 20px 22px 24px; }

.subject-meta { font-size: 0.88rem; color: var(--color-text-light); margin-bottom: 16px; }

.subject-actions { display: flex; align-items: center; gap: 14px; }

.subject-guide { font-size: 0.85rem; font-weight: 500; color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }

.subject-guide:hover { color: var(--color-accent); }

.practice-cta {
    margin-top: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-md);
    padding: 32px 36px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.practice-cta p { color: rgba(255, 255, 255, 0.85); font-size: 1rem; max-width: 620px; }

/* ===== Learning Path ===== */
.path-section { background: var(--color-bg-light); }

.path-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    gap: 12px;
    margin-bottom: 48px;
}

.path-steps::before {
    content: '';
    position: absolute;
    top: 34px;
    left: 6%;
    right: 6%;
    height: 2px;
    background: linear-gradient(to right, var(--color-border), var(--color-accent), var(--color-border));
}

.path-step { flex: 1; text-align: center; position: relative; z-index: 2; }

.path-num {
    font-size: 0.72rem;
    font-weight: 800;
    color: var(--color-accent);
    letter-spacing: 1.5px;
    margin-bottom: 10px;
}

.path-dot {
    width: 16px;
    height: 16px;
    background: var(--color-white);
    border: 4px solid var(--color-accent);
    border-radius: 50%;
    margin: 0 auto 14px;
    box-shadow: 0 2px 8px rgba(200, 151, 63, 0.3);
}

.path-dot-final { background: var(--color-accent); }

.path-step h4 { font-size: 0.95rem; font-weight: 700; color: var(--color-primary); line-height: 1.5; }

.path-step-final h4 { color: var(--color-accent-dark); }

/* Why strip */
.why-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
}

.why-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
}

.why-check {
    width: 22px;
    height: 22px;
    background: rgba(45, 134, 89, 0.12);
    color: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 800;
    flex-shrink: 0;
}

/* ===== Study in China ===== */
.study-section { background: var(--color-bg); }

.study-highlights {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 44px;
    padding: 36px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-md);
    margin-bottom: 48px;
}

.study-highlight-item { text-align: center; }

.sh-num { font-size: 2.4rem; font-weight: 800; color: var(--color-accent-light); line-height: 1; }

.sh-label { font-size: 0.9rem; color: rgba(255, 255, 255, 0.75); margin-top: 8px; }

.study-divider { width: 1px; height: 46px; background: rgba(255, 255, 255, 0.15); }

.study-process {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.process-step { text-align: center; max-width: 150px; flex: 1; min-width: 130px; }

.step-num {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: 10px;
    opacity: 0.45;
}

.process-step h4 { font-size: 0.98rem; font-weight: 700; color: var(--color-primary); margin-bottom: 6px; }

.process-step p { font-size: 0.8rem; color: var(--color-text-light); line-height: 1.55; }

.process-arrow { font-size: 1.4rem; color: var(--color-border); margin-top: 26px; flex-shrink: 0; }

.study-plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

.study-plan {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 30px 26px;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.study-plan:hover { transform: translateY(-4px); box-shadow: 0 12px 36px var(--color-shadow-strong); }

.study-plan-featured {
    border: 2px solid var(--color-accent);
    box-shadow: 0 8px 28px rgba(200, 151, 63, 0.12);
}

.plan-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: var(--color-white);
    padding: 5px 18px;
    border-radius: 50px;
    font-size: 0.78rem;
    font-weight: 600;
    white-space: nowrap;
}

.plan-header { margin-bottom: 18px; }

.plan-header h4 { font-size: 1.25rem; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }

.plan-price { display: flex; align-items: baseline; }

.plan-price .currency { font-size: 1.05rem; font-weight: 600; color: var(--color-accent); }

.plan-price .amount { font-size: 2.1rem; font-weight: 800; color: var(--color-primary); margin-left: 3px; }

.plan-period { font-size: 0.85rem; color: var(--color-text-muted); margin-left: 4px; }

.plan-desc { font-size: 0.83rem; color: var(--color-text-muted); margin-bottom: 14px; }

.study-plan ul, .partner-plan ul { flex-grow: 1; margin-bottom: 22px; }

.study-plan ul li, .partner-plan ul li {
    padding: 6px 0 6px 22px;
    font-size: 0.88rem;
    color: var(--color-text);
    position: relative;
}

.study-plan ul li::before, .partner-plan ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 6px;
    width: 15px;
    height: 15px;
    background: rgba(200, 151, 63, 0.13);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    font-weight: 700;
}

/* ===== Partners ===== */
.partners-section { background: var(--color-bg-light); }

.partner-types {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.partner-type {
    padding: 10px 26px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: var(--transition);
}

.partner-type:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.partner-pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }

.partner-plan {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 30px 26px;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.partner-plan:hover { transform: translateY(-4px); box-shadow: 0 12px 36px var(--color-shadow-strong); }

.partner-plan-featured {
    border: 2px solid var(--color-accent);
    box-shadow: 0 8px 28px rgba(200, 151, 63, 0.12);
}

/* ===== FAQ ===== */
.faq-section { background: var(--color-bg); }

.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active { border-color: var(--color-accent); box-shadow: 0 4px 20px var(--color-shadow); }

.faq-question {
    width: 100%;
    padding: 18px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover { color: var(--color-accent-dark); }

.faq-icon { font-size: 1.4rem; color: var(--color-accent); transition: var(--transition); flex-shrink: 0; margin-left: 16px; }

.faq-item.active .faq-icon { transform: rotate(45deg); }

.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease; padding: 0 22px; }

.faq-item.active .faq-answer { max-height: 320px; padding: 0 22px 18px; }

.faq-answer p { font-size: 0.92rem; color: var(--color-text-light); line-height: 1.75; }

/* ===== CTA Banner ===== */
.cta-banner {
    background: linear-gradient(135deg, #0F2440, #1B3A5F 60%, #2A5680);
    padding: 64px 0;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 80% 30%, rgba(200, 151, 63, 0.14) 0%, transparent 45%);
}

.cta-banner-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}

.cta-banner h2 { font-size: 1.9rem; font-weight: 700; color: var(--color-white); margin-bottom: 10px; }

.cta-banner p { color: rgba(255, 255, 255, 0.75); font-size: 1rem; }

.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ===== Contact ===== */
.contact-section { background: var(--color-bg); }

.contact-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: center; }

.contact-info .section-tag, .contact-info .section-title, .contact-info .section-desc { text-align: left; }

.contact-info .section-title { margin-top: 12px; font-size: 2rem; }

.contact-info .section-desc { margin-left: 0; margin-bottom: 30px; }

.contact-details { display: flex; flex-direction: column; gap: 20px; }

.contact-item { display: flex; gap: 16px; align-items: center; }

.contact-icon {
    width: 46px;
    height: 46px;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-icon svg { width: 21px; height: 21px; }

.contact-item h4 { font-size: 0.82rem; color: var(--color-text-muted); margin-bottom: 3px; font-weight: 500; }

.contact-item p { font-size: 1rem; color: var(--color-text); font-weight: 500; }

.contact-form-wrapper {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px;
}

.form-group { margin-bottom: 18px; }

.form-group label { display: block; font-size: 0.88rem; font-weight: 600; color: var(--color-primary); margin-bottom: 7px; }

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.93rem;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-white);
    transition: var(--transition);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(200, 151, 63, 0.1);
}

.form-group textarea { resize: vertical; }

.contact-form-hint {
    margin-top: 14px;
    font-size: 0.8rem;
    line-height: 1.6;
    color: var(--color-text-light, #6b7280);
    text-align: center;
}

.contact-details a { color: inherit; text-decoration: none; word-break: break-all; }
.contact-details a:hover { color: var(--color-accent); text-decoration: underline; }

.footer-col a[href^="mailto:"] { word-break: break-all; }

/* ===== Footer ===== */
.footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--space-lg) 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.4fr;
    gap: 40px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .nav-logo { margin-bottom: 16px; }

.footer-brand .logo-cn { color: var(--color-white); }

.footer-brand .logo-cn .logo-sub { color: var(--color-accent-light); }

.footer-brand p { font-size: 0.88rem; line-height: 1.7; max-width: 340px; }

.footer-col h4 { font-size: 0.98rem; font-weight: 600; color: var(--color-white); margin-bottom: 18px; }

.footer-col ul li { margin-bottom: 10px; font-size: 0.88rem; color: rgba(255, 255, 255, 0.6); }

.footer-col ul li a { color: rgba(255, 255, 255, 0.6); transition: var(--transition); }

.footer-col ul li a:hover { color: var(--color-accent-light); }

.footer-bottom { padding: 22px 0; text-align: center; }

.footer-bottom p { font-size: 0.8rem; color: rgba(255, 255, 255, 0.4); }

/* ===== Animations ===== */
.fade-in { opacity: 0; transform: translateY(26px); transition: opacity 0.6s ease, transform 0.6s ease; }

.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: 1fr; gap: 40px; }
    .hero-side { justify-content: flex-start; }
    .hero-card { max-width: 420px; }
    .hero-title { font-size: 2.5rem; }
    .services-grid, .services-grid-6 { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .subjects-grid { grid-template-columns: repeat(2, 1fr); }
    .study-plans, .partner-pricing { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
    .why-strip { grid-template-columns: repeat(2, 1fr); }
    .contact-wrapper { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== Mobile / tablet nav (hamburger) — raised to 1080px so the 9-item
   nav never wraps or overflows at medium widths (esp. English) ===== */
@media (max-width: 1080px) {
    .nav-menu {
        position: fixed;
        top: 119px;
        right: -100%;
        width: 280px;
        max-height: calc(100vh - 119px);
        background: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        padding: 28px 24px;
        gap: 18px;
        box-shadow: -4px 0 24px var(--color-shadow-strong);
        transition: right 0.3s ease;
        overflow-y: auto;
    }
    .nav-menu.active { right: 0; }
    .mobile-toggle { display: flex; }
    .mobile-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .mobile-toggle.active span:nth-child(2) { opacity: 0; }
    .mobile-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
    .nav-menu { gap: 18px; }
    html[lang="en"] .nav-link { font-size: 0.92rem; }
    html[lang="en"] .nav-menu { gap: 18px; }
}

@media (max-width: 768px) {
    .hero { padding: 64px 0 60px; }
    .hero-title { font-size: 2rem; }
    .hero-subtitle { font-size: 0.98rem; }
    .hero-actions { flex-direction: column; align-items: stretch; }
    .hero-actions .btn { width: 100%; }
    .hero-stats { gap: 20px; }
    .stat-divider { display: none; }
    .stat-num { font-size: 1.6rem; }

    .section { padding: var(--space-lg) 0; }
    .section-title { font-size: 1.7rem; }

    .services-grid, .services-grid-6, .products-grid, .subjects-grid { grid-template-columns: 1fr; }

    .study-highlights { flex-direction: column; gap: 22px; padding: 28px 20px; }
    .study-divider { width: 60px; height: 1px; }

    .study-process { flex-direction: column; align-items: center; }
    .process-arrow { transform: rotate(90deg); margin: 0; }

    .path-steps { flex-direction: column; gap: 24px; }
    .path-steps::before { display: none; }
    .path-step { display: flex; align-items: center; text-align: left; gap: 16px; }
    .path-dot { margin: 0; flex-shrink: 0; }
    .path-num { margin-bottom: 0; width: 52px; flex-shrink: 0; text-align: left; }

    .why-strip { grid-template-columns: 1fr; }

    .practice-cta { flex-direction: column; text-align: center; padding: 28px 22px; }

    .cta-banner-inner { flex-direction: column; text-align: center; }
    .cta-actions { justify-content: center; }

    .footer-grid { grid-template-columns: 1fr; }
    .contact-form-wrapper { padding: 26px 20px; }

    .product-footer { flex-direction: column; align-items: stretch; text-align: center; }
    .product-price { flex-direction: row; align-items: baseline; gap: 8px; justify-content: center; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.7rem; }
    .top-banner { font-size: 0.75rem; }
    .section-title { font-size: 1.45rem; }
    .logo-en { display: none; }
}

/* ===== Active nav state ===== */
.nav-link.active { color: var(--color-accent) !important; }
.nav-link.active::after { width: 100% !important; }
.nav-cta.active { color: var(--color-white) !important; }
.nav-cta.active::after { display: none !important; }

/* ===== Offline Learning Centers ===== */
.campuses-section { background: var(--color-bg-light); }

.campuses-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 28px;
}

.campus-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    position: relative;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.campus-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px var(--color-shadow-strong);
    border-color: var(--color-accent);
}

.campus-badge {
    display: inline-block;
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-white);
    background: var(--color-accent);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.campus-city {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 14px;
}

.campus-city span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-left: 6px;
}

.campus-features { margin-bottom: 20px; flex: 1; }

.campus-features li {
    font-size: 0.92rem;
    color: var(--color-text-light);
    padding: 6px 0 6px 22px;
    position: relative;
}

.campus-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

.campuses-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ===== Interactive Mock Quiz ===== */
.quiz-wrapper {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin: 48px 0 8px;
    box-shadow: 0 8px 24px var(--color-shadow);
}

.quiz-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
}

.quiz-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
}

.quiz-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.quiz-tab {
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-light);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.quiz-tab:hover { border-color: var(--color-accent); color: var(--color-primary); }

.quiz-tab.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.quiz-body { min-height: 220px; }

.quiz-idle {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 220px;
    color: var(--color-text-muted);
    font-size: 1rem;
    background: var(--color-bg-light);
    border-radius: var(--radius-md);
    border: 1px dashed var(--color-border);
}

.quiz-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.quiz-progress {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-accent);
}

.quiz-score { font-size: 0.88rem; color: var(--color-text-light); }

.quiz-progressbar {
    height: 6px;
    background: var(--color-bg-light);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 22px;
}

.quiz-progressbar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
    border-radius: 3px;
    transition: width 0.4s ease;
}

.quiz-question-text {
    font-size: 1.12rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: 20px;
}

.quiz-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 18px;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.98rem;
    text-align: left;
    background: var(--color-white);
    transition: var(--transition);
    cursor: pointer;
}

.quiz-option:hover:not(:disabled) {
    border-color: var(--color-primary);
    background: var(--color-bg-light);
}

.quiz-option.correct {
    border-color: var(--color-success);
    background: rgba(45, 134, 89, 0.08);
    font-weight: 600;
}

.quiz-option.wrong {
    border-color: var(--color-hot);
    background: rgba(224, 90, 71, 0.08);
}

.quiz-option.dimmed { opacity: 0.55; }

.quiz-option:disabled { cursor: default; }

.quiz-opt-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 0.82rem;
    font-weight: 700;
    flex-shrink: 0;
}

.quiz-option.correct .quiz-opt-label { background: var(--color-success); }
.quiz-option.wrong .quiz-opt-label { background: var(--color-hot); }

.quiz-feedback {
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    margin-bottom: 18px;
    border-left: 4px solid var(--color-success);
    background: rgba(45, 134, 89, 0.06);
}

.quiz-feedback.bad {
    border-left-color: var(--color-hot);
    background: rgba(224, 90, 71, 0.06);
}

.quiz-feedback-head {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.quiz-feedback-tag { font-weight: 700; font-size: 0.95rem; color: var(--color-success); }
.quiz-feedback.bad .quiz-feedback-tag { color: var(--color-hot); }

.quiz-feedback-ans { font-size: 0.9rem; color: var(--color-text-light); }

.quiz-feedback-exp {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

.quiz-actions { display: flex; justify-content: flex-end; }

.quiz-result { text-align: center; padding: 24px 0; }

.quiz-result-score {
    font-size: 3.4rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.1;
}

.quiz-result-score span {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.quiz-result-comment {
    font-size: 1rem;
    color: var(--color-accent-dark);
    font-weight: 600;
    margin: 12px 0 24px;
}

.quiz-result-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.quiz-note {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-top: 18px;
}

/* ===== Sub-page hero ===== */
.page-hero {
    background: linear-gradient(135deg, var(--color-bg-light) 0%, #EEF3F8 100%);
    padding: 72px 0 48px;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.page-hero-navy {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    padding: 84px 0 64px;
}

.page-hero-navy .section-tag { color: var(--color-accent-light); }

.page-hero-title {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 14px;
    line-height: 1.3;
}

.page-hero-navy .page-hero-title { color: var(--color-white); }

.page-hero-desc {
    font-size: 1.05rem;
    color: var(--color-text-light);
    max-width: 640px;
    margin: 0 auto;
}

.page-hero-navy .page-hero-desc { color: rgba(255, 255, 255, 0.78); }

.page-hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 36px;
    flex-wrap: wrap;
}

.page-hero-stat { text-align: center; }

.page-hero-stat strong {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-accent-light);
}

.page-hero-stat span {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.72);
}

/* ===== Universities: list & cards ===== */
.uni-list-section { background: var(--color-bg-light); }

.uni-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.uni-filters { display: flex; gap: 8px; flex-wrap: wrap; }

.uni-search-box input {
    padding: 10px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: 24px;
    font-family: inherit;
    font-size: 0.92rem;
    min-width: 260px;
    outline: none;
    transition: var(--transition);
}

.uni-search-box input:focus { border-color: var(--color-accent); }

.uni-count {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.uni-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.uni-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-muted);
    background: var(--color-white);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.uni-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.uni-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px var(--color-shadow-strong);
    border-color: var(--color-accent);
}

.uni-tile {
    height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

/* When an image is set, dim the gradient and let the photo show through */
.uni-tile[style*="background-image"] {
    background-color: #1B3A5F;
}

.uni-tile-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15, 36, 64, 0.15) 0%, rgba(15, 36, 64, 0.55) 100%);
    pointer-events: none;
}

.uni-tile-1 { background: linear-gradient(135deg, #1B3A5F, #2A5680); }
.uni-tile-2 { background: linear-gradient(135deg, #0F2440, #1B3A5F); }
.uni-tile-3 { background: linear-gradient(135deg, #8A6524, #C8973F); }
.uni-tile-4 { background: linear-gradient(135deg, #2A5680, #3D7AB8); }
.uni-tile-5 { background: linear-gradient(135deg, #24405C, #46688F); }

.uni-tile-text {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 4px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.uni-card-body {
    padding: 20px 22px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.uni-badges { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }

.uni-badge {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--color-primary);
    background: rgba(27, 58, 95, 0.08);
    padding: 2px 10px;
    border-radius: 12px;
    letter-spacing: 0.5px;
}

/* Partner-university highlight (CUP Beijing and similar) */
.uni-badge-partner {
    color: #fff;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    box-shadow: 0 2px 6px rgba(200, 151, 63, 0.35);
}
.uni-card-partner { border: 2px solid var(--color-accent); }
.uni-card-partner .uni-tile { box-shadow: inset 0 0 0 3px rgba(200, 151, 63, 0.0); }
.uni-tile-partner { box-shadow: inset 0 0 0 3px var(--color-accent); }

/* Hero banner on detail page */
.uni-hero {
    width: 100%;
    height: 320px;
    background-size: cover;
    background-position: center;
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    margin-bottom: 24px;
}
.uni-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15, 36, 64, 0.15) 0%, rgba(15, 36, 64, 0.55) 100%);
}
@media (max-width: 768px) { .uni-hero { height: 200px; } }

.uni-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.4;
}

.uni-name-en {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
    min-height: 1.2em;
}

.uni-meta {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 8px;
}

.uni-strengths {
    font-size: 0.85rem;
    color: var(--color-text-light);
    flex: 1;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.uni-more {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--color-accent);
}

.uni-card:hover .uni-more { color: var(--color-accent-dark); }

.unis-more {
    display: flex;
    justify-content: center;
    gap: 14px;
    margin-top: 36px;
    flex-wrap: wrap;
}

/* ===== University detail page ===== */
.uni-detail-section { background: var(--color-bg-light); }

.uni-back {
    display: inline-block;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: 28px;
    transition: var(--transition);
}

.uni-back:hover { color: var(--color-accent); }

.uni-detail-header {
    display: flex;
    align-items: center;
    gap: 32px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.uni-tile-lg {
    width: 128px;
    height: 128px;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.uni-tile-lg .uni-tile-text { font-size: 2.6rem; letter-spacing: 6px; }

.uni-detail-title { flex: 1; min-width: 260px; }

.uni-detail-name {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.25;
}

.uni-detail-en {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin: 4px 0 10px;
}

.uni-detail-meta {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

.uni-stats-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 36px;
}

.uni-stat { text-align: center; }

.uni-stat strong {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--color-primary);
}

.uni-stat span {
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

.uni-detail-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 28px;
    align-items: start;
}

.uni-detail-main {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 32px;
}

.uni-detail-block { margin-bottom: 30px; }
.uni-detail-block:last-child { margin-bottom: 0; }

.uni-detail-block h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 14px;
    padding-left: 12px;
    border-left: 4px solid var(--color-accent);
}

.uni-detail-block > p {
    font-size: 0.98rem;
    color: var(--color-text-light);
    line-height: 1.9;
}

.uni-chips { display: flex; flex-wrap: wrap; gap: 8px; }

.uni-chip {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(27, 58, 95, 0.07);
    border: 1px solid rgba(27, 58, 95, 0.15);
    padding: 6px 16px;
    border-radius: 18px;
}

.uni-req-list li {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.8;
    padding: 8px 0 8px 24px;
    position: relative;
    border-bottom: 1px dashed var(--color-border);
}

.uni-req-list li:last-of-type { border-bottom: none; }

.uni-req-list li::before {
    content: '•';
    position: absolute;
    left: 4px;
    color: var(--color-accent);
    font-weight: 700;
}

.uni-req-list strong { color: var(--color-primary); }

.uni-note {
    margin-top: 14px;
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

.uni-detail-side { display: flex; flex-direction: column; gap: 18px; }

.uni-side-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 26px;
}

.uni-side-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.uni-side-card h3:last-of-type { margin-top: 20px; }

.uni-tuition-value {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-accent-dark);
    margin-bottom: 4px;
}

.uni-side-text {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

.uni-side-cta {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.uni-related { margin-top: 48px; }

.uni-related h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 22px;
}

.uni-related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

/* ===== Universities responsive ===== */
@media (max-width: 1100px) {
    .uni-grid, .uni-related-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
    .uni-detail-grid { grid-template-columns: 1fr; }
    .uni-stats-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .page-hero { padding: 52px 0 36px; }
    .page-hero-title { font-size: 1.7rem; }
    .page-hero-stats { gap: 28px; }
    .uni-grid, .uni-related-grid { grid-template-columns: repeat(2, 1fr); }
    .uni-toolbar { flex-direction: column; align-items: stretch; }
    .uni-search-box input { width: 100%; min-width: 0; }
    .uni-detail-header { gap: 20px; }
    .uni-detail-name { font-size: 1.7rem; }
    .uni-tile-lg { width: 96px; height: 96px; }
    .uni-tile-lg .uni-tile-text { font-size: 1.9rem; }
}

@media (max-width: 520px) {
    .uni-grid, .uni-related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 992px) {
    .campuses-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .campuses-grid { grid-template-columns: 1fr; }
    .quiz-wrapper { padding: 22px 16px; }
    .quiz-header { flex-direction: column; align-items: stretch; }
    .quiz-options { grid-template-columns: 1fr; }
    .quiz-actions .btn { width: 100%; }
}


/* ===================== Member area: auth / account / question bank ===================== */

/* ---- Nav auth entry ---- */
.nav-auth {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    padding: 7px 15px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    transition: var(--transition);
    white-space: nowrap;
}
.nav-auth:hover { border-color: var(--color-accent); color: var(--color-accent-dark); }
.nav-auth.is-signed-in { background: rgba(200, 151, 63, 0.12); border-color: transparent; color: var(--color-accent-dark); }
html[lang="en"] .nav-auth { padding: 7px 12px; font-size: 0.8rem; }

/* ---- Auth page ---- */
.auth-page { padding: 120px 0 80px; background: var(--color-bg-light); min-height: 100vh; }
.auth-container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 32px;
    align-items: start;
}
.auth-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 36px 34px;
    box-shadow: 0 12px 40px var(--color-shadow);
}
.auth-head { margin-bottom: 22px; }
.auth-title { font-size: 1.5rem; color: var(--color-primary); margin-bottom: 8px; }
.auth-subtitle { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; }
.auth-tabs {
    display: flex;
    gap: 4px;
    background: var(--color-bg-light);
    padding: 4px;
    border-radius: 999px;
    margin-bottom: 22px;
}
.auth-tab {
    flex: 1;
    padding: 9px 8px;
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--color-text-light);
    background: transparent;
    border-radius: 999px;
    transition: var(--transition);
}
.auth-tab.active { background: var(--color-white); color: var(--color-primary); box-shadow: 0 2px 8px var(--color-shadow); }
.auth-tab:hover { color: var(--color-primary); }
.auth-alert, .account-alert {
    background: rgba(224, 90, 71, 0.1);
    color: #B23A28;
    font-size: 0.85rem;
    line-height: 1.5;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}
.auth-notice, .account-alert.is-ok {
    background: rgba(45, 134, 89, 0.1);
    color: var(--color-success);
    font-size: 0.85rem;
    line-height: 1.5;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field > span { font-size: 0.82rem; font-weight: 600; color: var(--color-text); }
.field input {
    width: 100%;
    padding: 12px 14px;
    font-size: 0.92rem;
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.field input:focus { outline: none; border-color: var(--color-accent); background: var(--color-white); }
.field-row { display: flex; gap: 10px; }
.field-row input { flex: 1; }
.btn-code { white-space: nowrap; padding: 12px 16px; font-size: 0.82rem; }
.btn-code:disabled { opacity: 0.55; cursor: default; }
.auth-links { display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; margin-top: 4px; }
.link-btn {
    background: none;
    font-size: 0.82rem;
    color: var(--color-primary-light);
    text-decoration: underline;
    text-underline-offset: 3px;
    cursor: pointer;
}
.link-btn:hover { color: var(--color-accent-dark); }
.auth-terms { font-size: 0.75rem; color: var(--color-text-muted); line-height: 1.6; }

.auth-side {
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    padding: 34px 30px;
    color: var(--color-white);
}
.auth-side-title { font-size: 1.1rem; margin-bottom: 18px; color: var(--color-white); }
.auth-side-list { display: flex; flex-direction: column; gap: 13px; margin-bottom: 26px; }
.auth-side-list li {
    position: relative;
    padding-left: 22px;
    font-size: 0.86rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.86);
}
.auth-side-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
}
.auth-side .btn-outline { border-color: rgba(255, 255, 255, 0.4); color: var(--color-white); }
.auth-side .btn-outline:hover { background: rgba(255, 255, 255, 0.12); }

/* ---- Account page ---- */
.account-page { padding: 120px 0 80px; background: var(--color-bg-light); min-height: 100vh; }
.account-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 26px;
}
.account-title { font-size: 1.6rem; color: var(--color-primary); margin-bottom: 6px; }
.account-subtitle { font-size: 0.9rem; color: var(--color-text-light); }
.account-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-bottom: 22px; }
.account-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 26px 26px 28px;
    box-shadow: 0 6px 24px var(--color-shadow);
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.account-card-wide { margin-bottom: 40px; }
.account-card-title { font-size: 1.02rem; color: var(--color-primary); }
.account-email {
    font-size: 0.86rem;
    color: var(--color-text-light);
    padding-bottom: 14px;
    border-bottom: 1px solid var(--color-border);
    word-break: break-all;
}
.account-form { display: flex; flex-direction: column; gap: 14px; }
.ent-list, .attempt-list { display: flex; flex-direction: column; gap: 10px; }
.ent-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    background: var(--color-bg-light);
    border-radius: var(--radius-sm);
}
.ent-main { display: flex; flex-direction: column; gap: 3px; }
.ent-main strong { font-size: 0.9rem; color: var(--color-text); }
.ent-main span { font-size: 0.76rem; color: var(--color-text-muted); }
.ent-badge {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-accent-dark);
    background: rgba(200, 151, 63, 0.14);
    padding: 4px 10px;
    border-radius: 999px;
    white-space: nowrap;
}
.attempt-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 13px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}
.attempt-main { display: flex; flex-direction: column; gap: 3px; }
.attempt-main strong { font-size: 0.9rem; color: var(--color-text); }
.attempt-main span { font-size: 0.76rem; color: var(--color-text-muted); }
.attempt-score { display: flex; align-items: center; gap: 12px; }
.attempt-num { font-size: 0.88rem; font-weight: 600; color: var(--color-primary); }
.attempt-pct {
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--color-hot);
    background: rgba(224, 90, 71, 0.12);
    padding: 3px 9px;
    border-radius: 999px;
}
.attempt-pct.is-good { color: var(--color-success); background: rgba(45, 134, 89, 0.12); }
.empty-hint { font-size: 0.86rem; color: var(--color-text-muted); line-height: 1.6; }

/* ---- Question bank page ---- */
.bank-page { padding: 120px 0 80px; background: var(--color-bg-light); min-height: 100vh; }
.bank-head { text-align: center; margin-bottom: 26px; }
.bank-title { font-size: 1.75rem; color: var(--color-primary); margin-bottom: 8px; }
.bank-subtitle { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; }
.bank-subjects {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 24px;
}
.bank-subject {
    padding: 9px 22px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text-light);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    transition: var(--transition);
    cursor: pointer;
}
.bank-subject:hover { border-color: var(--color-accent); color: var(--color-accent-dark); }
.bank-subject.active { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }
.bank-banner {
    max-width: 820px;
    margin: 0 auto 20px;
    padding: 13px 18px;
    font-size: 0.86rem;
    line-height: 1.6;
    border-radius: var(--radius-sm);
    background: rgba(27, 58, 95, 0.07);
    color: var(--color-primary);
}
.bank-banner.is-warn { background: rgba(200, 151, 63, 0.14); color: var(--color-accent-dark); }
.bank-banner a { font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
.bank-panel {
    max-width: 820px;
    margin: 0 auto;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 34px 36px 38px;
    box-shadow: 0 10px 36px var(--color-shadow);
}
.bank-progress { height: 5px; background: var(--color-bg-light); border-radius: 999px; overflow: hidden; margin-bottom: 20px; }
.bank-progress-bar { height: 100%; background: var(--color-accent); transition: width 0.3s ease; }
.bank-qmeta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 16px; }
.bank-qno { font-size: 0.82rem; font-weight: 700; color: var(--color-text-muted); letter-spacing: 0.4px; }
.bank-tag {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(27, 58, 95, 0.08);
    padding: 3px 10px;
    border-radius: 999px;
}
.bank-tag.is-soft { color: var(--color-text-light); background: var(--color-bg-light); }
.bank-tag.is-free { color: var(--color-success); background: rgba(45, 134, 89, 0.12); }
.bank-stem { font-size: 1.12rem; line-height: 1.7; color: var(--color-text); margin-bottom: 22px; }
.bank-options { display: flex; flex-direction: column; gap: 11px; }
.bank-option {
    display: flex;
    align-items: center;
    gap: 13px;
    width: 100%;
    text-align: left;
    padding: 14px 16px;
    font-size: 0.94rem;
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}
.bank-option:hover:not(:disabled) { border-color: var(--color-accent); background: var(--color-white); }
.bank-option:disabled { cursor: default; }
.opt-key {
    flex: 0 0 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-primary);
    background: var(--color-white);
    border-radius: 50%;
}
.bank-option.is-correct { border-color: var(--color-success); background: rgba(45, 134, 89, 0.09); }
.bank-option.is-correct .opt-key { background: var(--color-success); color: var(--color-white); }
.bank-option.is-wrong { border-color: var(--color-hot); background: rgba(224, 90, 71, 0.08); }
.bank-option.is-wrong .opt-key { background: var(--color-hot); color: var(--color-white); }
.bank-feedback { margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--color-border); }
.fb-title { font-size: 0.95rem; font-weight: 700; margin-bottom: 8px; }
.bank-feedback.is-right .fb-title { color: var(--color-success); }
.bank-feedback.is-wrong .fb-title { color: var(--color-hot); }
.fb-answer { font-size: 0.85rem; color: var(--color-text-light); margin-bottom: 10px; }
.fb-exp { font-size: 0.88rem; line-height: 1.7; color: var(--color-text-light); margin-bottom: 18px; }
.fb-exp strong { color: var(--color-text); }
.bank-result { text-align: center; padding: 10px 0 4px; }
.result-label { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 10px; }
.result-score { font-size: 1.4rem; color: var(--color-text-light); margin-bottom: 16px; }
.result-num { font-size: 2.6rem; font-weight: 800; color: var(--color-primary); }
.result-bar { height: 8px; background: var(--color-bg-light); border-radius: 999px; overflow: hidden; margin-bottom: 10px; }
.result-bar-fill { height: 100%; background: var(--color-accent); }
.result-pct { font-size: 1rem; font-weight: 700; color: var(--color-accent-dark); margin-bottom: 14px; }
.result-advice { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.7; margin-bottom: 16px; }
.result-saved { font-size: 0.82rem; color: var(--color-success); margin-bottom: 18px; }
.result-saved.is-warn { color: var(--color-hot); }
.result-saved a { text-decoration: underline; text-underline-offset: 3px; }
.result-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.footer-bottom-inner {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: space-between;
    padding: 22px 0;
}
.footer-bottom-inner p { font-size: 0.8rem; color: rgba(255, 255, 255, 0.45); }
.footer-bottom-inner a { color: rgba(255, 255, 255, 0.6); }

/* ---- Member area responsive ---- */
@media (max-width: 992px) {
    .auth-container { grid-template-columns: 1fr; }
    .account-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .auth-page, .account-page, .bank-page { padding: 96px 0 60px; }
    .auth-card { padding: 26px 20px; }
    .bank-panel { padding: 24px 18px 28px; }
    .auth-tabs { flex-wrap: wrap; }
    .auth-tab { flex: 1 0 44%; }
    .account-head { flex-direction: column; align-items: flex-start; }
    .field-row { flex-direction: column; }
    .btn-code { width: 100%; }
    .bank-stem { font-size: 1rem; }
}