/* ============================================================
   中级会计师招生页面 - 样式表
   主题色：#e30000
   ============================================================ */

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: #333;
    background: #fff;
    line-height: 1.6;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
input, select, button { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-block; padding: 12px 32px; border-radius: 6px;
    font-size: 15px; font-weight: 600; cursor: pointer; transition: all 0.3s;
    border: none; text-align: center;
}
.btn-blue {
    background: #e30000; color: #fff;
}
.btn-blue:hover { background: #b80000; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(227,0,0,0.4); }
.btn-white {
    background: #fff; color: #e30000;
}
.btn-white:hover { background: #fff5f5; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(255,255,255,0.3); }
.btn-outline {
    background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.btn-block { display: block; width: 100%; padding: 14px; font-size: 16px; }

/* ---------- Section Base ---------- */
.section { padding: 80px 0; }

.section-header { text-align: center; margin-bottom: 50px; }
.section-title {
    font-size: 32px; font-weight: 700; color: #1a1a1a; margin-bottom: 10px;
    position: relative; display: inline-block;
}
.section-title::after {
    content: ''; display: block; width: 60px; height: 3px;
    background: #e30000; margin: 12px auto 0; border-radius: 2px;
}
.section-desc {
    font-size: 14px; color: #999; letter-spacing: 2px; margin-top: 8px;
}

/* ---------- Header ---------- */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; }
.header-top {
    background: #fff; color: #fff; padding: 20px 0;
    border-bottom: 1px solid rgba(255,255,255,0.15);
}
.header-top-inner { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo img { width: 220px; display: block; }
.header-contact { text-align: right; }
.hotline-label { font-size: 12px; opacity: 0.85; display: block;color:#000 }
.hotline-phone { font-size: 24px; font-weight: 700; letter-spacing: 1px;color:#f00 }

.navbar {
    background:rgb(185 0 0); backdrop-filter: blur(10px);
    border-bottom: 2px solid rgb(255 212 0);
    transition: all 0.3s;
    position: relative;
}
.navbar.scrolled { background: rgb(147 0 0 / 80%); box-shadow: 0 4px 20px rgba(0,0,0,0.15); }
.nav-list { display: flex; justify-content: center; flex-wrap: wrap; }
.nav-link {
    display: block; padding: 14px 20px; color: rgba(255,255,255,0.9);
    font-size: 15px; font-weight: 500; transition: all 0.3s;
    position: relative;
}
.nav-link::after {
    content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 0; height: 2px; background: #fff; transition: width 0.3s;
}
.nav-link:hover, .nav-link.active { color: #fff; }
.nav-link:hover::after, .nav-link.active::after { width: 30px; }

/* Hamburger toggle button */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 6px;
    cursor: pointer;
    padding: 8px;
    margin-left: auto;
    flex-shrink: 0;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.3s;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero Banner ---------- */
.hero-banner {
    margin-top: 152px;
    height: 608px;
}

/* ---------- Timeline ---------- */
.timeline-section { background: #fff; }
.timeline { position: relative; padding: 20px 0; }
.timeline-line {
    position: absolute; top: 40px; left: 50%; transform: translateX(-50%);
    width: 80%; height: 3px; background: linear-gradient(to right, #e0e0e0, #e30000, #e0e0e0);
}
.timeline-items { display: flex; justify-content: space-between; position: relative; flex-wrap: wrap; gap: 20px; }
.timeline-item { flex: 0 0 calc(16.66% - 17px); text-align: center; position: relative; min-width: 140px; }
.timeline-dot {
    width: 18px; height: 18px; border-radius: 50%; background: #e30000;
    border: 3px solid #fff; box-shadow: 0 0 0 3px #e30000;
    margin: 0 auto 20px; position: relative; z-index: 2;
}
.timeline-card {
    background: #fff; border-radius: 12px; padding: 20px 14px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06); transition: all 0.3s;
    border: 1px solid #f5eeee;
}
.timeline-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(227,0,0,0.12); }
.timeline-card.highlight { border-color: #e30000; background: #fff5f5; }
.timeline-date { font-size: 13px; color: #e30000; font-weight: 700; margin-bottom: 8px; }
.timeline-icon { width: 42px; height: 42px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 10px; font-size: 20px; }
.timeline-card h4 { font-size: 15px; margin-bottom: 6px; color: #1a1a1a; }
.timeline-card p { font-size: 12px; color: #888; line-height: 1.5; }

/* ---------- Requirements ---------- */
.requirements-section { background: #fffafa; }
.req-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 24px; }
.req-card {
    background: #fff; border-radius: 12px; padding: 28px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05); border: 1px solid #f5eeee;
}
.req-card-title {
    font-size: 18px; color: #e30000; margin-bottom: 16px;
    padding-bottom: 10px; border-bottom: 2px solid #fff0f0;
}
.tag-new {
    font-size: 11px; background: #e30000; color: #fff;
    padding: 2px 8px; border-radius: 10px; margin-left: 6px; vertical-align: middle;
}
.req-list { list-style: none; }
.req-list li {
    padding: 8px 0; border-bottom: 1px dashed #f5eeee;
    font-size: 14px; color: #555; line-height: 1.6;
}
.req-list li::before { content: '●'; color: #e30000; margin-right: 8px; font-size: 6px; vertical-align: middle; }
.req-list li:last-child { border-bottom: none; }

.req-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.req-table th {
    background: #e30000; color: #fff; padding: 10px 14px; text-align: left;
    font-weight: 500;
}
.req-table th:first-child { border-radius: 6px 0 0 0; }
.req-table th:last-child { border-radius: 0 6px 0 0; }
.req-table td { padding: 10px 14px; border-bottom: 1px solid #f5eeee; }
.req-table tr:nth-child(even) td { background: #fffafa; }
.req-table strong { color: #e30000; }

.req-card p { font-size: 14px; color: #555; line-height: 1.8; }
.req-note { color: #999; font-size: 13px; margin-top: 8px; }
.req-notice {
    background: #fff5e6; border-left: 4px solid #e30000;
    padding: 14px 20px; border-radius: 0 8px 8px 0; font-size: 13px; color: #888;
}

/* ---------- Subjects ---------- */
.subjects-section { background: #fff; }
.subjects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-bottom: 30px; }
.subject-card {
    text-align: center; background: #fff; border-radius: 16px;
    overflow: hidden; box-shadow: 0 4px 24px rgba(0,0,0,0.06);
    transition: all 0.3s; border: 1px solid #f5eeee;
}
.subject-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(227,0,0,0.15); }
.subject-placeholder {
    height: 140px; display: flex; align-items: center; justify-content: center;
}
.subject-icon-large { font-size: 56px; }
.subject-card h4 { font-size: 20px; margin: 20px 0 12px; color: #1a1a1a; }
.subject-info { margin-bottom: 12px; padding-top: 10px; }
.subject-info p { font-size: 14px; color: #666; padding: 2px 0; }
.stars { color: #e30000; letter-spacing: 2px; }
.subject-desc { font-size: 13px; color: #999; padding: 0 20px 24px; line-height: 1.6; }
.subjects-note {
    text-align: center; background: #fff5f5; padding: 16px 24px;
    border-radius: 8px; font-size: 14px; color: #555;
}

/* ---------- Advantages ---------- */
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.advantage-item {
    text-align: center; background: #fff; border-radius: 14px;
    padding: 32px 20px; box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: all 0.3s; border: 1px solid #f5eeee;
}
.advantage-item:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(227,0,0,0.12); }
.advantage-icon-box { margin-bottom: 16px; }
.advantage-placeholder {
    width: 70px; height: 70px; border-radius: 18px; display: flex;
    align-items: center; justify-content: center; font-size: 56px;
    margin: 0 auto; color: #fff;
}
.advantage-item h4 { font-size: 17px; margin-bottom: 8px; color: #1a1a1a; }
.advantage-item p { font-size: 13px; color: #888; line-height: 1.6; }

/* ---------- Plans ---------- */
.plans-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.plan-card {
    text-align: center; background: #fff; border-radius: 14px;
    padding: 32px 20px; border: 1px solid #f5eeee;
    transition: all 0.3s; box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.plan-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(227,0,0,0.12); border-color: #e30000; }
.plan-placeholder {
    width: 110px; height: 90px; border-radius: 12px; display: flex;
    align-items: center; justify-content: center; margin: 0 auto 20px;
}
.plan-card h4 { font-size: 17px; margin-bottom: 10px; color: #1a1a1a; }
.plan-card p { font-size: 13px; color: #888; line-height: 1.6; margin-bottom: 16px; }
.plan-link { color: #e30000; font-weight: 600; font-size: 14px; transition: color 0.3s; }
.plan-link:hover { color: #b80000; }

/* ---------- Teaching Flow ---------- */
.teaching-section { background: #fffafa; }
.teaching-flow { display: flex; align-items: flex-start; gap: 0; justify-content: center; flex-wrap: wrap; }
.teaching-step {
    background: #fff; border-radius: 14px; padding: 28px 22px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05); flex: 0 0 220px;
    border: 1px solid #f5eeee; text-align: center;
}
.teaching-step-num {
    width: 44px; height: 44px; border-radius: 50%; background: #e30000;
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 20px; font-weight: 800; margin: 0 auto 16px;
}
.teaching-step-content h4 { font-size: 17px; margin-bottom: 6px; color: #1a1a1a; }
.teaching-step-content > p { font-size: 13px; color: #e30000; font-weight: 600; margin-bottom: 12px; }
.teaching-step-content ul li {
    font-size: 13px; color: #888; padding: 3px 0;
}
.teaching-step-content ul li::before { content: '✓'; color: #e30000; margin-right: 6px; font-size: 12px; }
.teaching-arrow {
    font-size: 28px; color: #e30000; display: flex; align-items: center;
    padding: 0 8px; margin-top: 50px;
}

/* ---------- AI Learning System ---------- */
.ai-section {
    background: #3a0e0e;
    background-image:
        radial-gradient(ellipse at 30% 20%, rgba(227,0,0,0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 60%, rgba(212,168,83,0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 50% 80%, rgba(227,0,0,0.08) 0%, transparent 50%);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.ai-section::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0v60M0 30h60' stroke='rgba(255,255,255,0.015)' stroke-width='1'/%3E%3C/svg%3E");
    pointer-events: none;
}
.ai-section .section-header { position: relative; z-index: 1; }
.ai-section .section-title { color: #fff; }
.ai-section .section-title::after { background: linear-gradient(90deg, #e30000, #d4a853); width: 80px; }
.ai-section .section-desc { color: rgba(255,255,255,0.5); }

/* AI Badge */
.ai-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(227,0,0,0.15); border: 1px solid rgba(227,0,0,0.3);
    padding: 6px 18px; border-radius: 20px; font-size: 12px;
    letter-spacing: 2px; color: #ff4444; margin-bottom: 16px;
}
.ai-badge-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: #d4a853; box-shadow: 0 0 10px #d4a853; animation: aiPulse 2s infinite;
}
@keyframes aiPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.ai-title { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.ai-title-accent {
    background: linear-gradient(90deg, #e30000, #d4a853);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* AI Stats Row */
.ai-stats-row {
    display: flex; align-items: center; justify-content: center; gap: 40px;
    margin: 40px 0 50px; flex-wrap: wrap;
}
.ai-stat-card { text-align: center; }
.ai-stat-card > p { font-size: 14px; color: rgba(255,255,255,0.5); margin-top: 10px; }

.ai-stat-ring {
    width: 120px; height: 120px; position: relative; margin: 0 auto;
}
.ai-stat-ring-text {
    position: absolute; inset: 0; display: flex;
    flex-direction: column; align-items: center; justify-content: center;
}
.ai-stat-num { font-size: 32px; font-weight: 800; line-height: 1; background: linear-gradient(180deg, #fff, #ff4444); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.ai-stat-unit { font-size: 18px; }
.ai-stat-sub { font-size: 16px; font-weight: 700; color: #ff4444; }

.ai-stat-big {
    font-size: 48px; font-weight: 900; line-height: 1;
    background: linear-gradient(180deg, #fff, #ff4444);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.ai-stat-sup { font-size: 24px; }
.ai-stat-tag {
    display: inline-block; font-size: 11px; background: rgba(212,168,83,0.15);
    color: #d4a853; padding: 2px 10px; border-radius: 10px; margin-top: 6px;
}

.ai-stat-divider { width: 1px; height: 80px; background: linear-gradient(180deg, transparent, rgba(255,255,255,0.2), transparent); }

/* AI Evolution */
.ai-evolution {
    display: flex; align-items: stretch; justify-content: center; gap: 0;
    margin-bottom: 24px; flex-wrap: wrap;
}
.ai-evo-card {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 20px; padding: 28px 32px; text-align: center; flex: 0 0 280px;
    transition: all 0.3s;
}
.ai-evo-card:hover { border-color: rgba(227,0,0,0.3); background: rgba(227,0,0,0.05); }
.ai-evo-year {
    display: inline-block; font-size: 28px; font-weight: 900; color: rgba(255,255,255,0.3);
    margin-bottom: 8px;
}
.ai-evo-year.highlight { color: #d4a853; }
.ai-evo-badge {
    display: inline-block; font-size: 12px; background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.5); padding: 4px 14px; border-radius: 12px;
    margin-bottom: 14px;
}
.ai-evo-badge.highlight { background: rgba(212,168,83,0.12); color: #d4a853; }
.ai-evo-card h4 { font-size: 20px; margin-bottom: 12px; color: #ccc; }
.ai-evo-card h4 .ai-evo-ver { color: rgba(255,255,255,0.4); }
.ai-evo-card h4 .ai-evo-ver.highlight { color: #fff; }
.ai-evo-card p { font-size: 14px; color: rgba(255,255,255,0.45); line-height: 1.7; }
.ai-evo-line {
    width: 40px; height: 2px; background: rgba(255,255,255,0.1);
    margin: 18px auto 0; border-radius: 1px;
}
.ai-evo-line.highlight { background: linear-gradient(90deg, #e30000, #d4a853); }

.ai-evo-arrow-box {
    display: flex; align-items: center; padding: 0 20px;
}
.ai-evo-arrow {
    width: 64px; height: 64px; border-radius: 50%;
    background: linear-gradient(135deg, rgba(227,0,0,0.2), rgba(212,168,83,0.1));
    border: 1px solid rgba(255,255,255,0.1);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 2px; font-size: 22px; color: #ff4444;
}
.ai-evo-arrow small { font-size: 9px; color: rgba(255,255,255,0.4); text-align: center; line-height: 1.3; }

.ai-evo-footer { text-align: center; margin-bottom: 50px; }
.ai-evo-footer p { font-size: 14px; color: rgba(255,255,255,0.4); }
.ai-divider-dot {
    display: inline-block; width: 4px; height: 4px; border-radius: 50%;
    background: #e30000; margin: 0 10px; vertical-align: middle;
}

/* AI Features Grid */
.ai-features-grid {
    display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px;
    margin-bottom: 50px;
}
.ai-feature-item {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
    border-radius: 14px; padding: 28px 18px; text-align: center;
    transition: all 0.3s;
}
.ai-feature-item:hover {
    border-color: rgba(227,0,0,0.3); background: rgba(227,0,0,0.06);
    transform: translateY(-3px);
}
.ai-feature-icon {
    width: 56px; height: 56px; border-radius: 14px; display: flex;
    align-items: center; justify-content: center; margin: 0 auto 14px;
}
.ai-feature-item h4 { font-size: 15px; color: #e0e0e0; margin-bottom: 8px; }
.ai-feature-item p { font-size: 12px; color: rgba(255,255,255,0.4); line-height: 1.6; }

/* AI Principles */
.ai-principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.ai-principle-card {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px; padding: 28px; display: flex; gap: 20px;
    align-items: flex-start; transition: all 0.3s; position: relative; overflow: hidden;
}
.ai-principle-card::after {
    content: ''; position: absolute; right: -20px; top: -20px;
    width: 100px; height: 100px; border-radius: 50%;
    background: radial-gradient(circle, rgba(227,0,0,0.08) 0%, transparent 70%);
}
.ai-principle-card:hover {
    border-color: rgba(227,0,0,0.3); background: rgba(227,0,0,0.05);
}
.ai-principle-num {
    font-size: 36px; font-weight: 900; color: rgba(227,0,0,0.25);
    line-height: 1; flex-shrink: 0; position: relative; z-index: 1;
}
.ai-principle-content { position: relative; z-index: 1; }
.ai-principle-content h4 { font-size: 18px; color: #e0e0e0; margin-bottom: 8px; }
.ai-principle-highlight { color: #d4a853; font-weight: 800; }
.ai-principle-content p { font-size: 13px; color: rgba(255,255,255,0.4); line-height: 1.7; }

/* AI Section Responsive */
@media (max-width: 1024px) {
    .ai-features-grid { grid-template-columns: repeat(3, 1fr); }
    .ai-evo-arrow-box { padding: 20px 0; }
}

@media (max-width: 768px) {
    .ai-stats-row { gap: 24px; }
    .ai-stat-divider { width: 60px; height: 1px; }
    .ai-evolution { flex-direction: column; align-items: center; }
    .ai-evo-card { flex: 0 0 auto; width: 100%; max-width: 320px; }
    .ai-evo-arrow-box { padding: 12px 0; }
    .ai-evo-arrow { transform: rotate(90deg); width: 48px; height: 48px; font-size: 18px; }
    .ai-features-grid { grid-template-columns: repeat(2, 1fr); }
    .ai-principles { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .ai-features-grid { grid-template-columns: 1fr; }
}

/* ---------- Courses ---------- */
.courses-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.course-card {
    background: #fff; border-radius: 14px; overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06); border: 1px solid #f5eeee;
    transition: all 0.3s;
}
.course-card:hover { transform: translateY(-6px); box-shadow: 0 12px 40px rgba(227,0,0,0.15); }
.course-placeholder { height: 120px; display: flex; align-items: center; justify-content: center; }
.course-body { padding: 20px; text-align: left; }
.course-body h4 { font-size: 18px; margin-bottom: 8px; color: #1a1a1a; }
.course-body > p { font-size: 13px; color: #888; margin-bottom: 14px; line-height: 1.5; }
.course-features { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.course-features span {
    font-size: 11px; background: #fff5f5; color: #e30000;
    padding: 4px 10px; border-radius: 12px;
}
.course-body .btn-blue { padding: 8px 28px; font-size: 14px; }

/* ---------- 课程分类选项卡 ---------- */
.courses-cat-nav {
    display: flex; justify-content: center; gap: 0;
    width: fit-content; margin: 0 auto 40px; border-radius: 12px;
    background: #fff; border: 1px solid #f0e0e0;
    overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.courses-section .container .courses-cat-nav { margin-bottom: 40px; }
.courses-section .container .courses-cat-panel { width: 100%; }
.courses-section .container .courses-exam-info { width: 100%; }

.courses-cat-btn {
    padding: 14px 36px; border: none; background: #fff;
    font-size: 16px; font-weight: 600; color: #888;
    cursor: pointer; transition: all 0.3s;
    position: relative;
}
.courses-cat-btn:not(:last-child) { border-right: 1px solid #f0e0e0; }
.courses-cat-btn:hover { color: #e30000; background: #fffafa; }
.courses-cat-btn.active {
    background: #e30000; color: #fff;
}

.courses-cat-panel { display: none; }
.courses-cat-panel.active { display: block; }

/* ---------- 考试信息区域（合并到课程内） ---------- */
.courses-exam-info {
    margin-top: 60px; padding-top: 50px;
    border-top: 2px solid #f0e0e0;
}
.exam-info-header {
    text-align: center; margin-bottom: 36px;
}
.exam-info-header h3 {
    font-size: 26px; color: #1a1a1a; margin-bottom: 8px;
    position: relative; display: inline-block;
}
.exam-info-header h3::after {
    content: ''; display: block; width: 60px; height: 3px;
    background: #e30000; margin: 12px auto 0; border-radius: 2px;
}
.exam-info-header p {
    font-size: 14px; color: #999; letter-spacing: 2px; margin-top: 8px;
}

.exam-cat-panel { display: none; }
.exam-cat-panel.active { display: block; }

.exam-info-tabs { max-width: 1000px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; }
.exam-info-tab-nav {
    display: inline-flex; justify-content: center; gap: 0;
    margin-bottom: 40px; border-radius: 12px;
    background: #fff; border: 1px solid #f0e0e0;
    overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.exam-info-tab-btn {
    padding: 14px 32px; border: none; background: #fff;
    font-size: 15px; font-weight: 600; color: #888;
    cursor: pointer; transition: all 0.3s;
}
.exam-info-tab-btn:not(:last-child) { border-right: 1px solid #f0e0e0; }
.exam-info-tab-btn:hover { color: #e30000; background: #fffafa; }
.exam-info-tab-btn.active {
    background: #e30000; color: #fff;
}

.exam-info-tab-panel { display: none; width: 100%; }
.exam-info-tab-panel.active { display: block; }

/* 考试信息内的 subjects-grid 响应式 */
@media (max-width: 768px) {
    .courses-cat-btn { padding: 12px 16px; font-size: 13px; }
    .exam-info-tab-btn { padding: 12px 18px; font-size: 13px; }
}

/* ---------- Materials ---------- */
.materials-tabs {
    display: flex; flex-direction: column; align-items: center;
}
.materials-tab-nav {
    display: inline-flex; justify-content: center; gap: 0;
    margin-bottom: 40px; border-radius: 12px;
    background: #fff; border: 1px solid #f0e0e0;
    overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
.materials-tab-btn {
    padding: 14px 32px; border: none; background: #fff;
    font-size: 15px; font-weight: 600; color: #888;
    cursor: pointer; transition: all 0.3s;
    position: relative;
}
.materials-tab-btn:not(:last-child) { border-right: 1px solid #f0e0e0; }
.materials-tab-btn:hover { color: #e30000; background: #fffafa; }
.materials-tab-btn.active {
    background: #e30000; color: #fff;
}

.materials-tab-content { width: 100%; }
.materials-tab-panel { display: none; width: 100%; }
.materials-tab-panel.active { display: block; }

.materials-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.material-category {
    background: #fff; border-radius: 14px; padding: 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05); border: 1px solid #f5eeee;
}
.material-category h4 { font-size: 16px; color: #e30000; margin-bottom: 14px; }
.material-category ul li {
    font-size: 13px; color: #555; padding: 6px 0;
    border-bottom: 1px dashed #f0f0f0; cursor: pointer; transition: color 0.3s;
}
.material-category ul li:hover { color: #e30000; }
.material-category ul li:last-child { border-bottom: none; }

@media (max-width: 768px) {
    .materials-tab-btn { padding: 10px 14px; font-size: 13px; }
}

/* ---------- Testimonials ---------- */
.testimonials-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.testimonial-card {
    background: #fff; border-radius: 14px; padding: 28px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05); border: 1px solid #f5eeee;
}
.testimonial-header { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.testimonial-avatar {
    width: 50px; height: 50px; border-radius: 50%; display: flex;
    align-items: center; justify-content: center; color: #fff;
    font-size: 20px; font-weight: 700; flex-shrink: 0;
}
.testimonial-header h4 { font-size: 16px; color: #1a1a1a; }
.testimonial-header span { font-size: 12px; color: #e30000; }
.testimonial-card p { font-size: 14px; color: #666; line-height: 1.7; }

/* ---------- Signup ---------- */
.signup-wrapper {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
    max-width: 1000px; margin: 0 auto;
}
.signup-info h3 { font-size: 22px; color: #1a1a1a; margin-bottom: 18px; }
.signup-reasons { list-style: none; margin-bottom: 24px; }
.signup-reasons li {
    padding: 8px 0; font-size: 15px; color: #555;
}
.signup-check { color: #e30000; font-weight: 700; margin-right: 6px; }
.signup-contact-info { background: #fff5f5; padding: 16px 20px; border-radius: 10px; }
.signup-contact-info p { font-size: 14px; color: #555; padding: 3px 0; }

.signup-form-box {
    background: #fff; border-radius: 14px; padding: 32px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.08); border: 1px solid #f5eeee;
}
.signup-form-box h3 { font-size: 22px; text-align: center; margin-bottom: 24px; color: #e30000; }
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block; font-size: 14px; font-weight: 600; color: #555; margin-bottom: 6px;
}
.form-group input, .form-group select {
    width: 100%; padding: 10px 14px; border: 1px solid #ddd;
    border-radius: 6px; font-size: 14px; transition: border-color 0.3s;
}
.form-group input:focus, .form-group select:focus {
    outline: none; border-color: #e30000; box-shadow: 0 0 0 3px rgba(227,0,0,0.1);
}
.captcha-row { display: flex; gap: 10px; }
.captcha-row input { flex: 1; }
.btn-captcha {
    white-space: nowrap; padding: 10px 16px; background: #fff5f5;
    color: #e30000; border: 1px solid #ffcccc; border-radius: 6px;
    cursor: pointer; font-size: 13px; transition: all 0.3s;
}
.btn-captcha:hover { background: #ffe0e0; }

/* ---------- Footer ---------- */
.footer { background: #f5f5f5; color: #000; padding: 50px 0 20px; }
.footer-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 30px; margin-bottom: 40px; }
.footer-col h4 { font-size: 16px; color: #333; margin-bottom: 16px; }
.footer-col ul li { padding: 5px 0; }
.footer-col ul li a { font-size: 13px; color: #666; transition: color 0.3s; }
.footer-col ul li a:hover { color: #e30000; }
.footer-contact p { font-size: 13px; color: #666; padding: 3px 0; }
.footer-qr { text-align: center; }
.footer-qr p { font-size: 12px; margin-top: 8px; color: #999; }
.footer-bottom {
    border-top: 1px solid #bbbbbb; padding-top: 20px;
    text-align: center; font-size: 12px; color: #666;
}
.footer-bottom p { padding: 2px 0; }

/* ---------- Floating Bar ---------- */
.floating-bar {
    position: fixed; right: 16px; top: 50%; transform: translateY(-50%);
    z-index: 999; display: flex; flex-direction: column; gap: 8px;
}
.float-item {
    width: 52px; height: 52px; background: #e30000; color: #fff;
    border-radius: 10px; display: flex; flex-direction: column;
    align-items: center; justify-content: center; font-size: 11px;
    transition: all 0.3s; box-shadow: 0 4px 12px rgba(227,0,0,0.3);
}
.float-item:hover { background: #b80000; transform: translateX(-3px); }
.float-icon { font-size: 18px; line-height: 1; }
.float-back-top { background: #555; box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.float-back-top:hover { background: #333; }

/* ---------- Teachers Section ---------- */
.teachers-section {
    background: #3a0e0e;
    background-image:
        radial-gradient(ellipse at 20% 30%, rgba(227,0,0,0.10) 0%, transparent 55%),
        radial-gradient(ellipse at 80% 70%, rgba(212,168,83,0.05) 0%, transparent 55%),
        radial-gradient(ellipse at 50% 50%, rgba(227,0,0,0.06) 0%, transparent 50%);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.teachers-section::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0v60M0 30h60' stroke='rgba(255,255,255,0.012)' stroke-width='1'/%3E%3C/svg%3E");
    pointer-events: none;
}
.teachers-section .section-header { position: relative; z-index: 1; }
.teachers-section .section-title { color: #fff; }
.teachers-section .section-title::after { background: linear-gradient(90deg, #e30000, #d4a853); width: 80px; }
.teachers-section .section-desc { color: rgba(255,255,255,0.8); }

.teachers-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(227,0,0,0.15); border: 1px solid rgba(227,0,0,0.3);
    padding: 6px 18px; border-radius: 20px; font-size: 12px;
    letter-spacing: 2px; color: #ff4444; margin-bottom: 16px;
}
.teachers-badge-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: #d4a853; box-shadow: 0 0 10px #d4a853; animation: aiPulse 2s infinite;
}

.teachers-title { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.teachers-title-accent {
    background: linear-gradient(90deg, #e30000, #d4a853);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

.teachers-swiper-wrap {
    position: relative; z-index: 1;
    padding: 0 50px;
}
.teachers-swiper { overflow: hidden; }

.teacher-card {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px; padding: 32px 24px; text-align: center;
    transition: all 0.3s; height: 100%;
    backdrop-filter: blur(4px);
}
.teacher-card:hover {
    border-color: rgba(227,0,0,0.4); background: rgba(227,0,0,0.08);
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(227,0,0,0.15), 0 0 60px rgba(227,0,0,0.05);
}

.teacher-avatar {
    width: 80px; height: 80px; border-radius: 50%; display: flex;
    align-items: center; justify-content: center;
    font-size: 32px; font-weight: 700; color: #fff;
    margin: 0 auto 18px;
    box-shadow: 0 8px 24px rgba(227,0,0,0.25);
    position: relative;
}
.teacher-avatar::after {
    content: ''; position: absolute; inset: -4px; border-radius: 50%;
    border: 2px solid rgba(227,0,0,0.2);
    animation: avatarGlow 3s ease-in-out infinite;
}
@keyframes avatarGlow {
    0%, 100% { border-color: rgba(227,0,0,0.2); }
    50% { border-color: rgba(212,168,83,0.5); }
}

.teacher-info h4 { font-size: 18px; color: #e0e0e0; margin-bottom: 6px; }
.teacher-title {
    font-size: 12px; color: #ff4444; display: block; margin-bottom: 12px;
}
.teacher-desc {
    font-size: 13px; color: rgba(255,255,255,0.8); line-height: 1.7;
    margin-bottom: 14px; min-height: 60px;overflow: hidden;height: 108px;text-align: left;
}
.teacher-tags { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.teacher-tags span {
    font-size: 11px; background: rgba(227,0,0,0.15); color: #ff4444;
    padding: 3px 12px; border-radius: 12px;
}

.teachers-swiper-prev, .teachers-swiper-next {
    position: absolute; top: 50%; transform: translateY(-50%);
    width: 44px; height: 44px; border-radius: 50%; z-index: 10;
    background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12);
    cursor: pointer; transition: all 0.3s;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 18px;
}
.teachers-swiper-prev { left: 0; }
.teachers-swiper-next { right: 0; }
.teachers-swiper-prev:hover, .teachers-swiper-next:hover {
    background: rgba(227,0,0,0.2); border-color: rgba(227,0,0,0.4);
    box-shadow: 0 0 20px rgba(227,0,0,0.2);
}
.teachers-swiper-prev::after, .teachers-swiper-next::after { font-size: 16px; font-weight: 700; }

/* ============================================================
   Section Background Enhancements - 科技感背景增强
   ============================================================ */

/* Timeline - 添加微妙的网格背景 */
.timeline-section {
    background: #fff;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(227,0,0,0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(227,0,0,0.02) 0%, transparent 50%);
}

/* Requirements - 渐变背景 */
.requirements-section {
    background: linear-gradient(180deg, #fffafa 0%, #fff0f0 50%, #fffafa 100%);
    position: relative;
}
.requirements-section::before {
    content: ''; position: absolute; top: 0; right: 0; width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(227,0,0,0.04) 0%, transparent 70%);
    pointer-events: none;
}
.requirements-section::after {
    content: ''; position: absolute; bottom: 0; left: 0; width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(227,0,0,0.03) 0%, transparent 70%);
    pointer-events: none;
}

/* Subjects - 白色背景+大色块装饰 */
.subjects-section {
    background: #fff;
    position: relative;
    overflow: hidden;
}
.subjects-section::after {
    content: ''; position: absolute; bottom: -80px; right: -80px;
    width: 350px; height: 350px; border-radius: 50%;
    background: radial-gradient(circle, rgba(227,0,0,0.04) 0%, transparent 70%);
    pointer-events: none;
}

/* Advantages - 深色科技风背景 */
.advantages-section {
    background: #421010;
    background-image:
        radial-gradient(ellipse at 25% 30%, rgba(227,0,0,0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 75% 70%, rgba(180,0,0,0.05) 0%, transparent 60%);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.advantages-section::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='50' height='50' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M25 0v50M0 25h50' stroke='rgba(255,255,255,0.01)' stroke-width='1'/%3E%3C/svg%3E");
    pointer-events: none;
}
.advantages-section .section-header { position: relative; z-index: 1; }
.advantages-section .section-title { color: #fff; }
.advantages-section .section-title::after { background: linear-gradient(90deg, #e30000, #d4a853); width: 80px; }
.advantages-section .section-desc { color: rgba(255,255,255,0.5); }
.advantages-section .advantage-item {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    transition: all 0.3s; backdrop-filter: blur(4px);
}
.advantages-section .advantage-item:hover {
    border-color: rgba(227,0,0,0.3); background: rgba(227,0,0,0.08);
    box-shadow: 0 8px 30px rgba(227,0,0,0.12), 0 0 40px rgba(227,0,0,0.04);
}
.advantages-section .advantage-item h4 { color: #e0e0e0; }
.advantages-section .advantage-item p { color: rgba(255,255,255,0.45); }

/* Plans - 浅色渐变背景 */
.plans-section {
    background: linear-gradient(180deg, #fffafa 0%, #fff 50%, #fffafa 100%);
    position: relative;
}
.plans-section::before {
    content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
    width: 600px; height: 2px;
    background: linear-gradient(90deg, transparent, rgba(227,0,0,0.1), transparent);
    pointer-events: none;
}

/* Teaching Flow - 蓝色渐变背景 */
.teaching-section {
    background: linear-gradient(135deg, #421010 0%, #4a1515 50%, #421010 100%);
    background-image:
        linear-gradient(135deg, #421010 0%, #4a1515 50%, #421010 100%),
        radial-gradient(ellipse at 30% 50%, rgba(227,0,0,0.06) 0%, transparent 60%);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.teaching-section .section-header { position: relative; z-index: 1; }
.teaching-section .section-title { color: #fff; }
.teaching-section .section-title::after { background: linear-gradient(90deg, #e30000, #d4a853); width: 80px; }
.teaching-section .section-desc { color: rgba(255,255,255,0.5); }
/* Teaching steps in dark sections (advantages / standalone) */
.advantages-section .teaching-step,
.teaching-section .teaching-step {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
}
.advantages-section .teaching-step-content h4,
.teaching-section .teaching-step-content h4 { color: #e0e0e0; }
.advantages-section .teaching-step-content p,
.teaching-section .teaching-step-content p { color: #ff4444; }
.advantages-section .teaching-step-content ul li,
.teaching-section .teaching-step-content ul li { color: rgba(255,255,255,0.45); }
.advantages-section .teaching-arrow,
.teaching-section .teaching-arrow { color: #ff4444; }

/* Courses - 浅色背景 */
.courses-section {
    background: #fffafa;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(227,0,0,0.03) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(227,0,0,0.02) 0%, transparent 50%);
}

/* Materials - 浅色背景 */
.materials-section {
    background: #fff;
    background-image:
        radial-gradient(circle at 90% 10%, rgba(227,0,0,0.03) 0%, transparent 50%);
}

/* Testimonials - 浅色渐变背景 */
.testimonials-section {
    background: linear-gradient(180deg, #fffafa 0%, #fff0f0 100%);
    position: relative;
}

/* Signup - 深色背景 */
.signup-section {
    background: #421010;
    background-image:
        radial-gradient(ellipse at 20% 80%, rgba(227,0,0,0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(212,168,83,0.05) 0%, transparent 60%);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.signup-section::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='50' height='50' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M25 0v50M0 25h50' stroke='rgba(255,255,255,0.01)' stroke-width='1'/%3E%3C/svg%3E");
    pointer-events: none;
}
.signup-section .section-header { position: relative; z-index: 1; }
.signup-section .section-title { color: #fff; }
.signup-section .section-title::after { background: linear-gradient(90deg, #e30000, #d4a853); width: 80px; }
.signup-section .section-desc { color: rgba(255,255,255,0.5); }
.signup-section .signup-info { position: relative; z-index: 1; }
.signup-section .signup-info h3 { color: #fff; }
.signup-section .signup-reasons li { color: rgba(255,255,255,0.7); }
.signup-section .signup-contact-info {
    background: rgba(227,0,0,0.1); border: 1px solid rgba(255,255,255,0.08);
}
.signup-section .signup-contact-info p { color: rgba(255,255,255,0.6); }
.signup-section .signup-form-box {
    position: relative; z-index: 1;
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(8px);
}
.signup-section .signup-form-box h3 { color: #fff; }
.signup-section .form-group label { color: rgba(255,255,255,0.7); }
.signup-section .form-group input,
.signup-section .form-group select {
    background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
    color: #fff;
}
.signup-section .form-group input::placeholder { color: rgba(255,255,255,0.3); }
.signup-section .form-group input:focus,
.signup-section .form-group select:focus {
    border-color: #e30000; box-shadow: 0 0 0 3px rgba(227,0,0,0.2);
}
.signup-section .btn-captcha {
    background: rgba(227,0,0,0.15); color: #ff4444;
    border: 1px solid rgba(227,0,0,0.25);
}
.signup-section .btn-captcha:hover { background: rgba(227,0,0,0.25); }
.signup-section .btn-blue { box-shadow: 0 4px 20px rgba(227,0,0,0.3); }
.signup-section .signup-check { color: #ff4444; }

/* Teacher Swiper Responsive */
@media (max-width: 1024px) {
    .teachers-swiper-wrap { padding: 0 40px; }
}
@media (max-width: 768px) {
    .teachers-swiper-wrap { padding: 0 30px; }
    .teacher-card { padding: 24px 16px; }
}

/* ============================================================
   Sci-Fi Corner Decorations - 科技风角标装饰
   ============================================================ */
.subject-card,
.teacher-card,
.course-card,
.req-card,
.testimonial-card {
    position: relative;
    overflow: hidden;
}

/* Top-left & bottom-right corner markers */
.subject-card::before,
.teacher-card::before,
.course-card::before,
.req-card::before,
.testimonial-card::before,
.subject-card::after,
.teacher-card::after,
.course-card::after,
.req-card::after,
.testimonial-card::after {
    content: '';
    position: absolute;
    width: 24px; height: 24px;
    pointer-events: none; z-index: 3;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

/* Top-left corner */
.subject-card::before,
.teacher-card::before,
.course-card::before,
.req-card::before,
.testimonial-card::before {
    top: 8px; left: 8px;
    border-top: 2px solid transparent;
    border-left: 2px solid transparent;
}

/* Bottom-right corner */
.subject-card::after,
.teacher-card::after,
.course-card::after,
.req-card::after,
.testimonial-card::after {
    bottom: 8px; right: 8px;
    border-bottom: 2px solid transparent;
    border-right: 2px solid transparent;
}

/* Hover: show corners */
.subject-card:hover::before,
.teacher-card:hover::before,
.course-card:hover::before,
.req-card:hover::before,
.testimonial-card:hover::before,
.subject-card:hover::after,
.teacher-card:hover::after,
.course-card:hover::after,
.req-card:hover::after,
.testimonial-card:hover::after {
    opacity: 1;
}

.subject-card:hover::before,
.course-card:hover::before,
.req-card:hover::before,
.testimonial-card:hover::before {
    border-top-color: #e30000;
    border-left-color: #e30000;
}
.subject-card:hover::after,
.course-card:hover::after,
.req-card:hover::after,
.testimonial-card:hover::after {
    border-bottom-color: #e30000;
    border-right-color: #e30000;
}

/* Dark section cards - cyan corners */
.teacher-card:hover::before,
.advantage-item:hover::before,
.ai-feature-item:hover::before {
    border-top-color: #d4a853; border-left-color: #d4a853;
}
.teacher-card:hover::after,
.advantage-item:hover::after,
.ai-feature-item:hover::after {
    border-bottom-color: #d4a853; border-right-color: #d4a853;
}

/* Include dark cards in corner decorations */
.advantage-item,
.ai-feature-item,
.plan-card {
    position: relative;
    overflow: hidden;
}
.advantage-item::before,
.advantage-item::after,
.ai-feature-item::before,
.ai-feature-item::after,
.plan-card::before,
.plan-card::after {
    content: '';
    position: absolute;
    width: 24px; height: 24px;
    pointer-events: none; z-index: 3;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}
.advantage-item::before,
.ai-feature-item::before,
.plan-card::before {
    top: 8px; left: 8px;
    border-top: 2px solid transparent;
    border-left: 2px solid transparent;
}
.advantage-item::after,
.ai-feature-item::after,
.plan-card::after {
    bottom: 8px; right: 8px;
    border-bottom: 2px solid transparent;
    border-right: 2px solid transparent;
}
.advantage-item:hover::before,
.advantage-item:hover::after,
.ai-feature-item:hover::before,
.ai-feature-item:hover::after,
.plan-card:hover::before,
.plan-card:hover::after {
    opacity: 1;
}

/* Dark card glow hover */
.advantage-item:hover,
.ai-feature-item:hover {
    box-shadow:
        0 0 0 1px rgba(212,168,83,0.3),
        0 0 20px rgba(212,168,83,0.12),
        0 0 50px rgba(212,168,83,0.05),
        0 8px 30px rgba(0,0,0,0.2);
}

/* ============================================================
   Glowing Hover Border - 发光渐变边框效果
   ============================================================ */
.subject-card:hover,
.course-card:hover,
.req-card:hover,
.testimonial-card:hover {
    box-shadow:
        0 0 0 1px rgba(227,0,0,0.25),
        0 0 20px rgba(227,0,0,0.12),
        0 0 50px rgba(227,0,0,0.05),
        0 12px 40px rgba(0,0,0,0.08);
}

.teacher-card:hover {
    box-shadow:
        0 0 0 1px rgba(212,168,83,0.35),
        0 0 20px rgba(212,168,83,0.15),
        0 0 50px rgba(212,168,83,0.06),
        0 12px 40px rgba(0,0,0,0.2);
}

.plan-card:hover,
.material-category:hover {
    box-shadow:
        0 0 0 1px rgba(227,0,0,0.2),
        0 0 16px rgba(227,0,0,0.08),
        0 8px 30px rgba(227,0,0,0.1);
}

/* ============================================================
   Hexagon Background Decorations - 六边形装饰元素
   ============================================================ */
.ai-section::after {
    content: '';
    position: absolute; top: 10%; right: 5%;
    width: 160px; height: 185px;
    background: rgba(227,0,0,0.03);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    border: 1px solid rgba(227,0,0,0.06);
    animation: hexFloat 8s ease-in-out infinite;
    pointer-events: none;
}

.teachers-section::after {
    content: '';
    position: absolute; top: 15%; left: 3%;
    width: 130px; height: 150px;
    background: rgba(212,168,83,0.03);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    border: 1px solid rgba(212,168,83,0.06);
    animation: hexFloat 10s ease-in-out infinite reverse;
    pointer-events: none;
}

.advantages-section::after {
    content: '';
    position: absolute; bottom: 8%; right: 8%;
    width: 120px; height: 138px;
    background: rgba(227,0,0,0.03);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    border: 1px solid rgba(227,0,0,0.05);
    animation: hexFloat 12s ease-in-out infinite;
    pointer-events: none;
}

.signup-section::after {
    content: '';
    position: absolute; top: 12%; right: 5%;
    width: 100px; height: 115px;
    background: rgba(227,0,0,0.04);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    border: 1px solid rgba(227,0,0,0.06);
    animation: hexFloat 9s ease-in-out infinite alternate;
    pointer-events: none;
}

@keyframes hexFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    33% { transform: translateY(-15px) rotate(5deg); }
    66% { transform: translateY(10px) rotate(-3deg); }
}

/* ============================================================
   New Sections - 新增板块样式
   ============================================================ */

/* ---------- btn-red (替代btn-blue) ---------- */
.btn-red {
    background: #e30000; color: #fff;
}
.btn-red:hover { background: #b80000; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(227,0,0,0.4); }

/* ---------- Teaching Sub Header (inside advantages) ---------- */
.teaching-sub-header {
    text-align: center; margin-top: 60px; padding-top: 50px;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.teaching-sub-header h3 {
    font-size: 26px; color: #fff; margin-bottom: 8px;
    position: relative; display: inline-block;
}
.teaching-sub-header h3::after {
    content: ''; display: block; width: 60px; height: 3px;
    background: linear-gradient(90deg, #e30000, #d4a853);
    margin: 12px auto 0; border-radius: 2px;
}
.teaching-sub-header p {
    font-size: 14px; color: rgba(255,255,255,0.5); letter-spacing: 2px; margin-top: 8px;
}

/* ---------- 1V1私人定制 Section ---------- */
.tutoring-section {
    background: #fff;
    background-image:
        radial-gradient(circle at 15% 30%, rgba(227,0,0,0.04) 0%, transparent 50%),
        radial-gradient(circle at 85% 70%, rgba(212,168,83,0.04) 0%, transparent 50%);
    position: relative;
}
.tutoring-title {
    color: #1a1a1a;
    font-size: 74px;
    font-weight: 800;
    letter-spacing: 2px;
}
.tutoring-title::after {
    background: linear-gradient(90deg, #e30000, #d4a853);
    width: 80px;
}
.tutoring-section .section-desc {
    color: #999;
    font-size: 16px;
    letter-spacing: 3px;
}

.tutoring-section .section-desc1 {
    color: #222;
    font-size: 46px;
    letter-spacing: 3px;
}
.tutoring-section .section-desc2 {
    color: #222;
    font-size: 56px;
    letter-spacing: 3px;
    font-weight: bold;
}

.tutoring-phases {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px;
    max-width: 1190px; margin: 40px auto 0;
}

.tutoring-phase {
    display: flex; flex-direction: column; gap: 14px;
    padding: 10px; border-radius: 16px;
    position: relative; transition: all 0.35s;
    border: 2px solid #f5eeee;
    background: #fff;
    text-align: left; align-items: flex-start;
}

.tutoring-phase:hover {
    border-color: #e30000;
    box-shadow: 0 8px 30px rgba(227,0,0,0.12);
    transform: translateY(-3px);
}

/* 序号在顶部 */
.phase-num { flex-shrink: 0; }
.phase-num span {
    display: inline-flex; align-items: center; justify-content: center;
    width: 80px; height: 30px; border-radius: 16px;
    background: linear-gradient(135deg, #e30000, #421010);
    color: #fff; font-size: 18px;
    letter-spacing: 1px;
}

.phase-body { width: 100%; }
.phase-body .bigTitle{margin:20px 0 20px 20px;font-size:38px;line-height:54px;font-weight:bold;color:#fff;}
.phase-body .bigTitleFont1{
    background: linear-gradient(180deg, #fff, #ff4444);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;}
.phase-body .bigTitleFont2{
    background: linear-gradient(180deg, #fff, #a244ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;}

.phase-body .content{margin:0;width:550px;min-height: 400px;border-top-left-radius: 0;border-top-right-radius: 0;border-bottom-left-radius: 16px;border-bottom-right-radius:  16px;}
.phase-body .cont1{background:#580000;}
.phase-body .cont2{background:#fff;}


.phase-body h3 {
    font-size: 22px; color: #1a1a1a; margin-bottom: 4px;
    font-weight: 800; letter-spacing: 1px;
}
.phase-sub {
    font-size: 14px; color: #e30000; font-weight: 700; margin-bottom: 10px;
    letter-spacing: 0.5px;
}
.phase-details {
    display: flex; flex-wrap: wrap; gap: 8px;
}

.phase-details span {
    font-size: 13px; color: #555;
    background: #fff5f5; padding: 6px 14px;
    border-radius: 20px; border: 1px solid #ffe0e0;
    font-weight: 500;
}

/* Phase accent colors */
.phase-1 .phase-num span { background: #e30000; }
.phase-3 .phase-num span { background: #e30000; }
.phase-5 .phase-num span { background: #e30000; }
.phase-7 .phase-num span { background: #e30000; }

.phase-2 .phase-num span { background: #941eff; }
.phase-4 .phase-num span { background: #941eff; }
.phase-6 .phase-num span { background: #941eff; }
.phase-8 .phase-num span { background: #941eff; }


/* ---------- 考试信息 Exam Info Tabs ---------- */
.exam-info-section {
    background: linear-gradient(180deg, #fffafa 0%, #fff5f5 50%, #fffafa 100%);
    position: relative;
}

.exam-tabs { max-width: 1000px; margin: 0 auto; }

.exam-tab-nav {
    display: flex; justify-content: center; gap: 0;
    margin-bottom: 40px; border-radius: 12px;
    background: #fff; border: 1px solid #f0e0e0;
    overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    display: inline-flex; width: auto;
    margin-left: auto; margin-right: auto;
}
/* Center the nav */
.exam-tabs { display: flex; flex-direction: column; align-items: center; }

.exam-tab-btn {
    padding: 14px 32px; border: none; background: #fff;
    font-size: 15px; font-weight: 600; color: #888;
    cursor: pointer; transition: all 0.3s;
    position: relative;
}
.exam-tab-btn:not(:last-child) { border-right: 1px solid #f0e0e0; }
.exam-tab-btn:hover { color: #e30000; background: #fffafa; }
.exam-tab-btn.active {
    background: #e30000; color: #fff;
}

.exam-tab-panel { display: none; width: 100%; }
.exam-tab-panel.active { display: block; }

/* ---------- 1V1 Tutoring Responsive ---------- */
@media (max-width: 768px) {
    .tutoring-phases { grid-template-columns: 1fr; gap: 14px; }
    .tutoring-phase { padding: 22px 20px; }
    .phase-body h3 { font-size: 20px; }
    .tutoring-title { font-size: 32px; }
    .exam-tab-btn { padding: 12px 18px; font-size: 13px; }
}

/* ---------- 财科荣誉 Honor Section ---------- */
.honor-section {
    background: #fff;
    background-image:
        radial-gradient(circle at 15% 50%, rgba(227,0,0,0.03) 0%, transparent 50%),
        radial-gradient(circle at 85% 50%, rgba(227,0,0,0.02) 0%, transparent 50%);
}

.honor-swiper-wrap {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.honor-swiper {
    overflow: hidden;
}

.honor-medal {
    text-align: center;
    padding: 10px;
}

.honor-medal-img {
    width: auto;

    display: flex;
    align-items: center;
    justify-content: center;

    margin: 0 auto;
    aspect-ratio: 1 / 1;
   /* box-shadow: 0 8px 30px rgba(0,0,0,0.12), 0 0 40px rgba(227,0,0,0.06); height: 150px; border-radius: 50%;*/
    transition: all 0.35s;
    position: relative;
    overflow: hidden;
}

.honor-medal-img::after {
    content: '';
    position: absolute;
    top: 8%;
    left: 15%;
    width: 30%;
    height: 20%;
    background: rgba(255,255,255,0.25);
    border-radius: 50%;
    transform: rotate(-20deg);
}

.honor-medal-icon {
    font-size: 56px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.honor-medal:hover .honor-medal-img {
   /* transform: translateY(-6px);
    box-shadow: 0 14px 40px rgba(227,0,0,0.2), 0 0 60px rgba(227,0,0,0.08);*/
}

.honor-medal-name {
    margin-top: 14px;
    font-size: 14px;
    color: #555;
    font-weight: 600;
    letter-spacing: 1px;
}

/* ============================================================
   New Sections - 新增板块样式 (Desktop)
   ============================================================ */

/* ---------- Section Title with Icon Decorations ---------- */
.icon-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.icon-title::before,
.icon-title::after {
    content: '';
    width: 40px;
    height: 2px;
    background: #d4a853;
}
.icon-title::after {
    all: unset;
    content: '';
    width: 40px;
    height: 2px;
    background: #d4a853;
    display: block;
    flex-shrink: 0;
}
.icon-title::before {
    content: '';
    width: 40px;
    height: 2px;
    background: #d4a853;
    display: block;
    flex-shrink: 0;
}

/* ---------- Photo Grid (吃住学一体化 & 奖励金) ---------- */
.czximg_box {
    max-width: 1200px;
    margin: 0 auto;
}
.czximg_box ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    justify-content: center;
}
.czximg_box ul li {
    flex: 0 0 auto;
    width: 270px;
    margin: 0 10px 20px;
    text-align: center;
    transition: transform 0.3s;
}
.czximg_box ul li:hover {
    transform: translateY(-6px);
}
.czximg_box ul li div {
    width: 270px;
    height: 180px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    border: 1px solid #eee;
}
.czximg_box ul li div img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.czximg_box ul li span {
    display: block;
    margin-top: 10px;
    font-size: 14px;
    color: #555;
    line-height: 1.4;
}

/* ---------- Achievements Swiper ---------- */
.achievements-section {
    background: #fff;
    background-image:
        radial-gradient(circle at 15% 50%, rgba(227,0,0,0.03) 0%, transparent 50%),
        radial-gradient(circle at 85% 50%, rgba(227,0,0,0.02) 0%, transparent 50%);
}
.achievements-swiper-wrap {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 50px;
}
.achievements-swiper {
    overflow: hidden;
}
.achievements-swiper .swiper-slide {
    display: flex;
    align-items: center;
    justify-content: center;
}
.achievements-swiper .swiper-slide img {
    width: 100%;
    height: 300px;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    background: #f5f5f5;
}
.achievements-swiper-prev,
.achievements-swiper-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    z-index: 10;
    background: rgba(227,0,0,0.08);
    border: 1px solid rgba(227,0,0,0.15);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #e30000;
    font-size: 18px;
    user-select: none;
}
.achievements-swiper-prev { left: 0; }
.achievements-swiper-next { right: 0; }
.achievements-swiper-prev:hover,
.achievements-swiper-next:hover {
    background: rgba(227,0,0,0.15);
    border-color: rgba(227,0,0,0.3);
}
.achievements-swiper-prev::after {
    content: '◀';
    font-size: 12px;
}
.achievements-swiper-next::after {
    content: '▶';
    font-size: 12px;
}

/* ---------- Service & Bonus Section Backgrounds ---------- */
.service-section {
    background: #faf9f9;
}
.bonus-section .icon-title {
    color: #1a1a1a;
}

/* ---------- Student Testimonials (学员心声) ---------- */
.xyxs {
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
}
.kuang {
    float: left;
    width: calc(33.333% - 20px);
    margin: 0 10px 28px;
    background: #fff;
    border-radius: 14px;
    padding: 28px 22px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    border: 1px solid #f0e0e0;
    transition: all 0.3s;
    text-align: center;
}
.kuang:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(227,0,0,0.12);
    border-color: #e30000;
}
.xytx {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 14px;
    border: 3px solid #ffe8e8;
}
.xytx img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.kuang span {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: #e30000;
    margin-bottom: 12px;
}
.kuang p {
    font-size: 13px;
    color: #666;
    line-height: 1.7;
    text-align: left;
}

/* ---------- Download Area (学习资料) ---------- */
.download-box {
    max-width: 1000px;
    margin: 0 auto;
    background: #fff;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
    border: 1px solid #eee;
}
.download-item-group {
    margin-bottom: 24px;
}
.download-item-group h3 {
    font-size: 18px;
    color: #1a1a1a;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0e0e0;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.download-all-btn {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    color: #e30000;
    background: #fff5f5;
    border: 1px solid #ffcccc;
    padding: 4px 14px;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    white-space: nowrap;
}
.download-all-btn:hover {
    background: #e30000;
    color: #fff;
    border-color: #e30000;
}
.download-item-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}
.download-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fafafa;
    border-radius: 8px;
    padding: 12px 16px;
    border: 1px solid #f0f0f0;
    transition: all 0.3s;
}
.download-item:hover {
    border-color: #e30000;
    background: #fff5f5;
}
.download-item > img:first-child {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}
.download-item span {
    flex: 1;
    font-size: 13px;
    color: #555;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.download-item a {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: #e30000;
    font-weight: 600;
    flex-shrink: 0;
    text-decoration: none;
    transition: color 0.3s;
}
.download-item a:hover {
    color: #b80000;
}
.download-item a img {
    width: 20px;
    height: 20px;
}

/* Zip download row */
.download-zip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 20px;
    padding-top: 24px;
    border-top: 2px solid #f0e0e0;
}
.download-zip-item {
    flex: 0 0 calc(20% - 13px);
    min-width: 160px;
    text-align: center;
    background: #fafafa;
    border-radius: 12px;
    padding: 20px 14px;
    border: 1px solid #f0f0f0;
    transition: all 0.3s;
}
.download-zip-item:hover {
    border-color: #e30000;
    box-shadow: 0 4px 16px rgba(227,0,0,0.1);
}
.download-zip-item img {
    width: 48px;
    height: 48px;
    margin: 0 auto 10px;
}
.download-zip-item strong {
    display: block;
    font-size: 14px;
    color: #333;
    margin-bottom: 12px;
    line-height: 1.4;
}
.download-zip-item a {
    display: inline-block;
    padding: 8px 20px;
    background: #e30000;
    color: #fff;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
}
.download-zip-item a:hover {
    background: #b80000;
    transform: translateY(-1px);
}


/* ============================================================
   RESPONSIVE - Comprehensive Breakpoints
   ============================================================ */

/* ---------- Tablet (max-width: 1024px) ---------- */
@media (max-width: 1024px) {
    .section { padding: 60px 0; }
    .section-title { font-size: 26px; }
    .section-title::after { width: 50px; }

    /* Header */
    .logo img { width: 170px; }
    .hotline-phone { font-size: 20px; }
    .nav-list { flex-wrap: nowrap; justify-content: flex-start; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
    .nav-list::-webkit-scrollbar { display: none; }
    .nav-link { padding: 12px 14px; font-size: 13px; white-space: nowrap; flex-shrink: 0; }

    /* Hero */
    .hero-banner { margin-top: 130px; height: 360px; }

    /* Tutoring */
    .tutoring-title { font-size: 48px; }
    .tutoring-section .section-desc1 { font-size: 32px; }
    .tutoring-section .section-desc2 { font-size: 38px; }
    .tutoring-phases { grid-template-columns: 1fr; gap: 16px; }
    .phase-body .bigTitle { font-size: 28px; line-height: 40px; }
    .phase-body .content { width: 100% !important; min-height: auto; }
    .phase-body .content > div { width: 100% !important; height: auto !important; min-height: 150px; background-size: contain !important; }
    .phase-body .content > div > div { width: 50% !important; padding-top: 100px !important; font-size: 16px !important; }
    .phase-body .content > div[style*="padding"] { width: 100% !important; font-size: 16px !important; padding-left: 20px !important; }
    .tutoring-phase { background-position: right 10px top 10px !important; background-size: 60px auto !important; }

    /* Plans */
    .plans-grid { grid-template-columns: repeat(2, 1fr); }

    /* Advantages */
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }

    /* Teaching flow */
    .teaching-flow { flex-wrap: wrap; justify-content: center; }
    .teaching-step { flex: 0 0 240px; }

    /* Courses */
    .courses-grid { grid-template-columns: repeat(2, 1fr); }

    /* Teachers */
    .teachers-swiper-wrap { padding: 0 40px; }

    /* Testimonials (new) */
    .kuang { width: calc(50% - 20px); }

    /* Download */
    .download-item-row { grid-template-columns: 1fr; }
    .download-zip-item { flex: 0 0 calc(33.333% - 11px); }

    /* Signup */
    .signup-wrapper { gap: 24px; }

    /* Honor */
    .honor-swiper-wrap { padding: 0 16px; }

    /* Photo grid */
    .czximg_box ul li { width: calc(33.333% - 20px); }
    .czximg_box ul li div { width: 100%; height: 150px; }

    /* Achievements */
    .achievements-swiper .swiper-slide img { height: 220px; }

    /* Exam info */
    .subjects-grid { grid-template-columns: repeat(3, 1fr); }
    .req-grid { grid-template-columns: 1fr; }
    .req-table { font-size: 12px; }
    .req-table th, .req-table td { padding: 8px 10px; }

    /* Footer */
    .footer-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Tablet Small / Large Phone (max-width: 768px) ---------- */
@media (max-width: 768px) {
    .section { padding: 40px 0; }
    .section-header { margin-bottom: 30px; }
    .section-title { font-size: 22px; }
    .section-desc { font-size: 12px; letter-spacing: 1px; }

    /* Header */
    .header-top { padding: 10px 0; }
    .header-top-inner { justify-content: flex-start; }
    .header-contact { display: none; }
    .logo img { width: 150px; }

    /* Nav - hamburger menu */
    .navbar { overflow: hidden; }
    .navbar .container { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; }
    .nav-toggle { display: flex; }
    .nav-list {
        display: none;
        width: 100%;
        flex-direction: column;
        padding: 0;
        flex-wrap: nowrap;
        order: 1;
    }
    .nav-list.open { display: flex; }
    .nav-link { padding: 12px 16px; border-bottom: 1px solid rgba(255,255,255,0.1); font-size: 14px; }

    /* Hero */
    .hero-banner { margin-top: 115px; height: 240px; }

    /* Tutoring */
    .tutoring-title { font-size: 34px; }
    .tutoring-section .section-desc1 { font-size: 24px; }
    .tutoring-section .section-desc2 { font-size: 28px; }
    .phase-body .bigTitle { font-size: 24px; line-height: 34px; margin: 10px 0 10px 10px; }
    .phase-body .content > div > div { padding-top: 60px !important; font-size: 14px !important; }
    .section-header[style*="height:460px"] { height: auto !important; background-image: none !important; }

    /* Plans */
    .plans-grid { grid-template-columns: 1fr; gap: 16px; }
    .plan-card { padding: 24px 16px; }

    /* Advantages */
    .advantages-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
    .advantage-item { padding: 20px 14px; }

    /* Teaching */
    .teaching-flow { flex-direction: column; align-items: center; gap: 0; }
    .teaching-step { flex: 0 0 auto; width: 100%; max-width: 300px; }
    .teaching-arrow { transform: rotate(90deg); margin: 4px 0; padding: 0; font-size: 20px; }

    /* Courses */
    .courses-grid { grid-template-columns: 1fr; }
    .courses-cat-btn { padding: 10px 16px; font-size: 13px; }
    .courses-cat-nav { width: 100%; overflow-x: auto; }
    .courses-cat-nav .courses-cat-btn { flex-shrink: 0; white-space: nowrap; }

    /* Exam info tabs */
    .exam-info-tab-btn { padding: 10px 14px; font-size: 13px; }
    .subjects-grid { grid-template-columns: 1fr; }

    /* Teachers */
    .teachers-swiper-wrap { padding: 0 30px; }
    .teacher-card { padding: 24px 16px; }

    /* Materials tabs */
    .materials-tab-btn { padding: 10px 14px; font-size: 13px; }
    .materials-tab-nav { width: 100%; overflow-x: auto; }
    .materials-tab-nav .materials-tab-btn { flex-shrink: 0; white-space: nowrap; }

    /* Testimonials (new) */
    .kuang { width: calc(100% - 20px); float: none; margin: 0 auto 20px; max-width: 500px; }

    /* Download */
    .download-box { padding: 16px 12px; }
    .download-item-row { grid-template-columns: 1fr; }
    .download-zip-row { gap: 10px; }
    .download-zip-item { flex: 0 0 calc(50% - 5px); min-width: 0; }
    .download-item { padding: 10px 12px; }
    .download-item span { font-size: 12px; }

    /* Photo grid */
    .czximg_box ul li { width: calc(50% - 16px); margin: 0 8px 16px; }
    .czximg_box ul li div { height: 130px; }
    .czximg_box ul li span { font-size: 12px; }

    /* Achievements */
    .achievements-swiper-wrap { padding: 0 32px; }
    .achievements-swiper .swiper-slide img { height: 180px; }
    .achievements-swiper-prev, .achievements-swiper-next { width: 36px; height: 36px; }

    /* Signup */
    .signup-wrapper { grid-template-columns: 1fr; gap: 24px; }
    .signup-form-box { padding: 24px 16px; }
    .signup-info h3 { font-size: 18px; }

    /* Honor */
    .honor-swiper-wrap { padding: 0 12px; }

    /* Timeline */
    .timeline-items { flex-direction: column; align-items: center; }
    .timeline-line { width: 3px; height: 90%; left: 20px; top: 0; }
    .timeline-item { flex: 0 0 auto; width: 100%; max-width: 320px; }

    /* Requirements */
    .req-grid { grid-template-columns: 1fr; }

    /* AI */
    .ai-stats-row { gap: 20px; }
    .ai-evolution { flex-direction: column; align-items: center; }
    .ai-evo-card { flex: 0 0 auto; width: 100%; max-width: 320px; }
    .ai-evo-arrow-box { padding: 12px 0; }
    .ai-evo-arrow { transform: rotate(90deg); width: 48px; height: 48px; font-size: 18px; }
    .ai-features-grid { grid-template-columns: repeat(2, 1fr); }

    /* Footer */
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .footer { padding: 30px 0 16px; }

    /* icon-title */
    .icon-title { font-size: 20px; gap: 10px; }
    .icon-title::before, .icon-title::after { width: 24px; }
    .icon-title::after { width: 24px; }
    .icon-title::before { width: 24px; }
}

/* ---------- Mobile (max-width: 480px) ---------- */
@media (max-width: 480px) {
    .section { padding: 32px 0; }
    .section-title { font-size: 20px; }
    .container { padding: 0 12px; }

    /* Header */
    .header-top { padding: 8px 0; }
    .header-contact { display: none; }
    .logo img { width: 130px; }

    /* Hero */
    .hero-banner { margin-top: 102px; height: 180px; }

    /* Tutoring */
    .tutoring-title { font-size: 26px; }
    .tutoring-section .section-desc1 { font-size: 18px; }
    .tutoring-section .section-desc2 { font-size: 22px; }
    .phase-body .bigTitle { font-size: 20px; line-height: 28px; }
    .phase-body .content > div > div { padding-top: 50px !important; font-size: 12px !important; }
    .phase-body .content > div[style*="padding"] { font-size: 13px !important; line-height: 24px !important; }
    .phase-num span { width: 65px; height: 26px; font-size: 14px; }
    .tutoring-phase { background-image: none !important; }

    /* AI */
    .ai-stats-row { flex-direction: column; gap: 16px; }
    .ai-stat-divider { width: 60px; height: 1px; }
    .ai-features-grid { grid-template-columns: 1fr; }
    .ai-principles { grid-template-columns: 1fr; }

    /* Plans */
    .plan-card { padding: 20px 12px; }
    .plan-placeholder { width: 90px; height: 70px; }

    /* Advantages */
    .advantages-grid { grid-template-columns: 1fr; }

    /* Teaching */
    .teaching-sub-header { margin-top: 40px; padding-top: 30px; }

    /* Testimonials (new) */
    .kuang { width: 100%; margin: 0 0 16px; padding: 20px 16px; }
    .kuang span { font-size: 16px; }
    .xytx { width: 64px; height: 64px; }

    /* Download */
    .download-box { padding: 12px 8px; }
    .download-item-group h3 { font-size: 15px; }
    .download-item { padding: 10px; gap: 6px; }
    .download-item span { font-size: 11px; }
    .download-zip-row { gap: 8px; }
    .download-zip-item { flex: 0 0 100%; padding: 16px 12px; }

    /* Photo grid */
    .czximg_box ul li { width: 100%; margin: 0 0 14px; }
    .czximg_box ul li div { height: 200px; }

    /* Achievements */
    .achievements-swiper-wrap { padding: 0 28px; }
    .achievements-swiper .swiper-slide img { height: 220px; }

    /* Signup */
    .signup-wrapper { gap: 16px; }
    .signup-form-box { padding: 18px 12px; }

    /* Footer */
    .footer-grid { grid-template-columns: 1fr; gap: 16px; }

    /* Honor */
    .honor-medal-img { height: auto; }

    /* Courses */
    .courses-cat-btn { padding: 10px 12px; font-size: 12px; }

    /* Materials */
    .materials-tab-btn { padding: 10px 10px; font-size: 12px; }

    /* icon-title */
    .icon-title { font-size: 18px; gap: 8px; }
    .icon-title::before, .icon-title::after { width: 20px; }
    .icon-title::after { width: 20px; }
    .icon-title::before { width: 20px; }

    /* Buttons */
    .btn { padding: 10px 20px; font-size: 13px; }
    .btn-block { padding: 12px; font-size: 14px; }

    /* Table */
    .req-table { font-size: 11px; }
    .req-table th, .req-table td { padding: 6px 8px; }

    /* Timeline */
    .timeline-card { padding: 14px 10px; }
    .timeline-card h4 { font-size: 13px; }
}

/* ---------- Extra small (max-width: 360px) ---------- */
@media (max-width: 360px) {
    .hero-banner { height: 150px; margin-top: 104px; }
    .tutoring-title { font-size: 22px; }
    .tutoring-section .section-desc1 { font-size: 16px; }
    .tutoring-section .section-desc2 { font-size: 18px; }
    .phase-body .bigTitle { font-size: 18px; line-height: 24px; }
    .section-title { font-size: 18px; }
    .nav-link { padding: 8px 9px; font-size: 11px; }
    .achievements-swiper .swiper-slide img { height: 180px; }
}