:root {
    /* ===== nvg8-inspired design system ===== */

    /* Core palette */
    --cl-black: #0f0f0f;
    --cl-white: #fdf9f0;
    --cl-lime: #c7ff69;
    --cl-orange: #ff6d38;
    --cl-purple: #7a78ff;
    --cl-blue: #478bff;

    /* Brand accents (legacy compat) */
    --primary-color: var(--cl-blue);
    --primary-dark: #1e40af;
    --primary-light: #dbeafe;
    --human-orange: var(--cl-orange);
    --human-orange-light: #ffe0d0;
    --human-orange-dark: #e05a2a;
    --growth-green: #10b981;
    --growth-green-light: #d1fae5;
    --future-purple: var(--cl-purple);

    /* Gradients */
    --gradient-sunrise: linear-gradient(135deg, var(--cl-black) 0%, #1a1a2e 100%);
    --gradient-sunrise-dark: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #d97706 100%);
    --gradient-ocean: linear-gradient(135deg, #dbeafe 0%, #93c5fd 50%, #60a5fa 100%);
    --gradient-warm-blue: linear-gradient(135deg, #fef3c7 0%, #dbeafe 100%);

    /* Text */
    --text-primary: var(--cl-black);
    --text-secondary: #555;
    --text-light: #888;
    --text-on-dark: var(--cl-white);

    /* Backgrounds */
    --bg-white: #ffffff;
    --bg-cream: var(--cl-white);
    --bg-warm: var(--cl-white);
    --bg-light: #f4f2ec;
    --bg-dark: var(--cl-black);

    /* Typography */
    --font-heading: 'Noto Serif SC', 'Songti SC', serif;
    --font-body: -apple-system, 'PingFang SC', 'Helvetica Neue', 'Microsoft YaHei', sans-serif;
    --font-handwriting: 'Caveat', cursive;

    /* Display sizes — nvg8-scale bold */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.5rem;
    --text-5xl: 3.5rem;
    --text-6xl: clamp(3rem, 7vw, 6rem);
    --text-display: clamp(3.5rem, 9vw, 8rem);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
    --shadow-warm: 0 8px 32px rgba(255, 109, 56, 0.2);

    /* Radius — nvg8 pill + card */
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 24px;
    --radius-pill: 60px;
    --radius-full: 9999px;

    /* Glass */
    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Motion — nvg8 easing */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-in-out: cubic-bezier(0.84, 0, 0.16, 1);
    --transition-fast: 0.2s var(--ease-out);
    --transition-normal: 0.4s var(--ease-out);
    --transition-slow: 0.6s var(--ease-out);

    /* Layout */
    --navbar-height: 70px;
    --container-max: 1200px;
    --side-margin: clamp(1.5rem, 5vw, 5rem);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Accessibility improvements - Focus visible styles */
:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip to main content link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: var(--bg-white);
    padding: 8px;
    text-decoration: none;
    z-index: 10000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* ==================== Scroll-triggered animations ==================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .fade-in-up {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ==================== Navbar — nvg8-style floating pill ==================== */
.navbar {
    position: fixed;
    top: 1.25rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.6rem 0.75rem 0.6rem 1.25rem;
    background: rgba(15, 15, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-pill);
    z-index: 1000;
    height: auto;
    width: auto;
    max-width: calc(100% - 3rem);
    transition: all 0.4s var(--ease-out);
}

/* Logo wordmark */
.logo-container {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    text-decoration: none;
    gap: 0;
}

.logo-mark {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
    display: flex;
    align-items: baseline;
}

.logo-i {
    color: var(--cl-white);
}

.logo-2 {
    color: var(--cl-lime);
    font-size: 1.75rem;
    margin: 0 -0.05em;
}

.logo-lab {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    color: rgba(253,249,240,0.5);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-left: 0.3rem;
    align-self: center;
}

.logo-img {
    height: 36px;
    width: auto;
    display: block;
    filter: brightness(0) invert(1);
}

.nav-links {
    display: flex;
    gap: 0.25rem;
}

.nav-links a {
    text-decoration: none;
    color: rgba(255,255,255,0.7);
    font-weight: 600;
    font-size: var(--text-base);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-pill);
    transition: all 0.2s var(--ease-out);
    white-space: nowrap;
}

.nav-links a:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}

/* Scrolled state — slightly more opaque */
.navbar.scrolled {
    background: rgba(15, 15, 15, 0.92);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

/* ==================== Hero — nvg8-style dark, bold ==================== */

.hero {
    min-height: 100vh;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem var(--side-margin) 6rem;
    position: relative;
    overflow: hidden;
    color: var(--text-on-dark);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 30% 70%, rgba(199, 255, 105, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 30%, rgba(122, 120, 255, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: var(--container-max);
    width: 100%;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

.hero-title-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

.hero-line {
    font-family: var(--font-heading);
    font-size: var(--text-display);
    font-weight: 900;
    line-height: 0.95;
    letter-spacing: -0.03em;
    color: var(--cl-white);
    opacity: 0;
    transform: translateY(40px);
    animation: heroFadeUp 0.9s var(--ease-out) forwards;
}

.hero-line:nth-child(1) { animation-delay: 0.1s; }
.hero-line:nth-child(2) { animation-delay: 0.25s; }
.hero-line:nth-child(3) { animation-delay: 0.4s; }

.hero-line.highlight {
    color: var(--cl-lime);
    font-size: var(--text-display);
}

.hero-handwriting {
    font-family: var(--font-handwriting);
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    color: rgba(253,249,240,0.5);
    margin-top: 2rem;
    transform: rotate(-2deg);
    opacity: 0;
    animation: heroFadeUp 0.8s var(--ease-out) 0.6s forwards;
    letter-spacing: 0.05em;
}

.hero-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.5rem 0;
    opacity: 0;
    animation: fadeIn 1s ease 0.8s forwards;
}

.divider-line {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(199,255,105,0.4), transparent);
}

.divider-icon {
    color: var(--cl-lime);
    font-size: 1rem;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 900;
    color: var(--cl-white);
    margin: 0;
    letter-spacing: 0.04em;
    line-height: 1.2;
    opacity: 0;
    animation: heroFadeUp 0.8s var(--ease-out) 1s forwards;
}

.hero-description {
    font-size: clamp(1.15rem, 2vw, 1.5rem);
    color: rgba(253,249,240,0.45);
    line-height: 1.8;
    margin: 0;
    opacity: 0;
    animation: heroFadeUp 0.8s var(--ease-out) 1.2s forwards;
    letter-spacing: 0.03em;
}

/* Buttons — nvg8 pill style */
.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 0.5rem;
    opacity: 0;
    animation: heroFadeUp 0.8s var(--ease-out) 1.4s forwards;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--cl-lime);
    color: var(--cl-black);
    padding: 1rem 2.25rem;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: clamp(1rem, 1.5vw, 1.1rem);
    border: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    text-decoration: none;
}

.btn-primary:hover {
    border-radius: var(--radius-md);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(199, 255, 105, 0.3);
}

.btn-primary i {
    transition: transform 0.2s var(--ease-out);
}

.btn-primary:hover i {
    transform: translateX(4px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    color: var(--cl-white);
    padding: 1rem 2.25rem;
    border: 1px solid rgba(253,249,240,0.25);
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: clamp(1rem, 1.5vw, 1.1rem);
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
}

.btn-secondary:hover {
    border-color: var(--cl-lime);
    color: var(--cl-lime);
    border-radius: var(--radius-md);
}

/* Stats */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(253,249,240,0.1);
    opacity: 0;
    animation: heroFadeUp 0.8s var(--ease-out) 1.6s forwards;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 900;
    color: var(--cl-lime);
    line-height: 1;
}

.stat-label {
    font-size: var(--text-base);
    color: rgba(253,249,240,0.5);
    letter-spacing: 0.15em;
    font-weight: 600;
    line-height: 1.4;
    white-space: nowrap;
    display: block;
}

.stat-divider {
    width: 1px;
    height: 32px;
    background: rgba(253,249,240,0.15);
}

/* Scroll indicator */
.hero-scroll {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: rgba(253,249,240,0.4);
    opacity: 0;
    animation: fadeIn 1s ease 2s forwards;
}

.scroll-text {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.scroll-arrow {
    animation: bounce 2s infinite;
}

/* Animations */
@keyframes heroFadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-8px); }
    60% { transform: translateY(-4px); }
}

/* ==================== 品牌故事板块 - 温暖人文风格 ==================== */

.brand-story {
    padding: 8rem var(--side-margin);
    background: var(--bg-cream);
    position: relative;
    overflow: hidden;
}

.brand-story::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 10% 20%, rgba(199,255,105,0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(122,120,255,0.05) 0%, transparent 40%);
    pointer-events: none;
}

.brand-story-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

/* 开场白 */
.story-intro {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    letter-spacing: 0.15em;
}

/* 核心问题 */
.story-question {
    margin: 3rem 0;
}

.story-question blockquote {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0;
    padding: 2.5rem;
    border: 1px solid var(--cl-black);
    background: transparent;
    border-radius: var(--radius-lg);
}

/* 答案部分 */
.story-answer {
    margin: 4rem 0;
}

.answer-lead {
    font-size: clamp(1.15rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.answer-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--cl-black);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 3rem;
}

/* 创始人卡片 */
.founder-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin: 3rem 0;
}

.founder-photo-wrapper {
    position: relative;
    width: 200px;
    height: 200px;
}

.founder-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}

.photo-glow {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: linear-gradient(135deg, rgba(199,255,105,0.3), rgba(122,120,255,0.3));
    border-radius: var(--radius-lg);
    opacity: 0.3;
    filter: blur(20px);
    z-index: 0;
}

.founder-quote {
    text-align: center;
}

.quote-handwriting {
    font-family: var(--font-handwriting);
    font-size: var(--text-3xl);
    color: var(--cl-black);
    margin-bottom: 0.5rem;
}

.quote-author {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* 时间轴 — nvg8 style */
.timeline {
    position: relative;
    margin: 5rem 0;
    padding: 2rem 0;
}

.timeline-line {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 100%;
    background: linear-gradient(to bottom, rgba(15,15,15,0.1), rgba(15,15,15,0.2), rgba(15,15,15,0.1));
}

.timeline-item {
    position: relative;
    display: flex;
    align-items: center;
    margin: 3rem 0;
    text-align: left;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
    text-align: right;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--cl-black);
    border-radius: 50%;
    border: 3px solid var(--bg-cream);
    box-shadow: 0 0 0 1px rgba(15,15,15,0.15);
    z-index: 2;
}

.timeline-dot::after {
    content: attr(data-year);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--text-xs);
    font-weight: 700;
    color: white;
    white-space: nowrap;
}

.timeline-content {
    width: 45%;
    padding: 1.5rem;
    background: var(--bg-white);
    border: 1px solid rgba(15,15,15,0.06);
    border-radius: var(--radius-md);
    transition: all 0.4s var(--ease-out);
}

.timeline-content:hover {
    transform: translateY(-4px);
    border-color: rgba(15,15,15,0.15);
    box-shadow: var(--shadow-md);
}

.timeline-item.highlight .timeline-content {
    background: var(--cl-black);
    border-color: var(--cl-black);
    color: var(--cl-white);
}

.timeline-item.highlight .timeline-content h4,
.timeline-item.highlight .timeline-content p {
    color: rgba(253,249,240,0.8);
}

.timeline-item.highlight .timeline-year {
    color: var(--cl-lime);
}

.timeline-item.highlight .timeline-dot {
    background: var(--cl-lime);
    border-color: var(--bg-cream);
}

.timeline-year {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--cl-black);
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 故事板块CTA */
.story-cta {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.cta-text {
    font-family: var(--font-heading);
    font-size: clamp(1.15rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    letter-spacing: 0.02em;
}

/* ==================== 课程旅程 - 地图式 ==================== */

.course-journey {
    padding: 8rem var(--side-margin);
    background: var(--bg-dark);
    color: var(--text-on-dark);
    position: relative;
    overflow: hidden;
}

.course-journey::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 5% 30%, rgba(199,255,105,0.04) 0%, transparent 40%),
        radial-gradient(circle at 95% 70%, rgba(122,120,255,0.04) 0%, transparent 40%);
    pointer-events: none;
}

.journey-container {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* 旅程头部 */
.journey-header {
    text-align: center;
    margin-bottom: 5rem;
}

.journey-subtitle {
    font-size: var(--text-base);
    color: var(--cl-lime);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}

.journey-title {
    font-family: var(--font-heading);
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--cl-white);
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin-bottom: 1.25rem;
}

.journey-description {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    color: rgba(253,249,240,0.5);
    max-width: 600px;
    margin: 0 auto;
    letter-spacing: 0.02em;
}

/* 旅程路径 */
.journey-path {
    position: relative;
    padding: 2rem 0;
}

.path-line {
    position: absolute;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: calc(100% - 200px);
    background: linear-gradient(to bottom,
        var(--cl-lime) 0%,
        var(--cl-purple) 50%,
        var(--cl-lime) 100%);
    border-radius: 2px;
    z-index: 0;
    opacity: 0.4;
}

/* 旅程站点 */
.journey-stop {
    position: relative;
    display: flex;
    align-items: flex-start;
    margin: 3rem 0;
    z-index: 1;
}

.journey-stop:nth-child(odd) {
    flex-direction: row;
    padding-right: 50%;
}

.journey-stop:nth-child(even) {
    flex-direction: row-reverse;
    padding-left: 50%;
}

/* 站点标记 */
.stop-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 2;
}

.stop-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stop-number {
    width: 36px;
    height: 36px;
    background: var(--cl-black);
    border: 2px solid var(--cl-lime);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-sm);
    color: var(--cl-lime);
}

/* 站点卡片 — nvg8 glass on dark */
.stop-card {
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    width: 90%;
    max-width: 400px;
    transition: all 0.4s var(--ease-out);
}

.stop-card:hover {
    transform: translateY(-8px);
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
}

.card-header {
    padding: 1.5rem;
    color: var(--cl-black);
}

.phase-tag {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    color: rgba(0,0,0,0.6);
}

.card-header h3 {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

.story-text {
    font-size: clamp(0.95rem, 1.5vw, 1.1rem);
    color: rgba(253,249,240,0.7);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.outcome-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--cl-lime);
    background: rgba(199,255,105,0.12);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-pill);
}

/* 高亮站点 */
.journey-stop.highlight .stop-card {
    border: 2px solid var(--cl-lime);
    box-shadow: 0 8px 40px rgba(199,255,105,0.15);
}

/* 旅程终点 */
.journey-destination {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-top: 4rem;
    padding-top: 3rem;
    position: relative;
}

.destination-marker {
    width: 80px;
    height: 80px;
    background: var(--cl-lime);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 40px rgba(199,255,105,0.3);
    margin-bottom: 1.5rem;
    animation: pulse 2s infinite;
}

.destination-icon {
    font-size: 2.5rem;
}

.destination-text h3 {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 900;
    color: var(--cl-white);
    margin-bottom: 0.5rem;
}

.destination-text p {
    font-size: clamp(1.05rem, 2vw, 1.2rem);
    color: rgba(253,249,240,0.5);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ==================== 学员故事板块 — nvg8 style ==================== */

.student-stories {
    padding: 8rem var(--side-margin);
    background: var(--bg-cream);
    position: relative;
}

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

/* 头部 */
.stories-header {
    text-align: center;
    margin-bottom: 5rem;
}

.stories-subtitle {
    font-size: var(--text-base);
    color: var(--cl-lime);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
    display: inline-block;
    background: var(--cl-black);
    padding: 0.4rem 1.25rem;
    border-radius: var(--radius-pill);
}

.stories-title {
    font-family: var(--font-heading);
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--cl-black);
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin-bottom: 1.25rem;
}

.stories-description {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--text-secondary);
}

/* 故事网格 */
.stories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

@media (max-width: 1024px) {
    .stories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .stories-grid {
        grid-template-columns: 1fr;
    }
}

/* 故事卡片 — nvg8 card style */
.story-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.4s var(--ease-out);
    border: 1px solid rgba(15,15,15,0.1);
}

.story-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(15,15,15,0.2);
}

.story-card.featured {
    border-color: var(--cl-black);
    border-width: 2px;
}

/* 视觉区域 */
.story-visual {
    position: relative;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.student-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.avatar-initial {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: white;
}

.story-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--cl-black);
    color: var(--cl-lime);
    font-size: var(--text-xs);
    font-weight: 700;
    padding: 0.3rem 0.85rem;
    border-radius: var(--radius-pill);
    letter-spacing: 0.05em;
}

/* 内容区域 */
.story-content {
    padding: 0 2rem 2rem;
}

.story-quote {
    font-family: var(--font-heading);
    font-size: clamp(1.05rem, 1.5vw, 1.2rem);
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.7;
    margin: 0 0 1.5rem 0;
    padding-left: 1rem;
    border-left: 3px solid var(--cl-black);
}

/* 转变对比 */
.story-transformation {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-cream);
    border-radius: var(--radius-md);
    border: 1px solid rgba(15,15,15,0.06);
}

.before, .after {
    flex: 1;
    text-align: center;
}

.before .label, .after .label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.after .label.highlight {
    color: var(--cl-lime);
    background: var(--cl-black);
    display: inline-block;
    padding: 0.1rem 0.5rem;
    border-radius: var(--radius-pill);
}

.before p, .after p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

.arrow {
    font-size: var(--text-xl);
    color: var(--cl-black);
    font-weight: 700;
}

/* 作者信息 */
.story-author {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.story-author strong {
    font-size: var(--text-xl);
    color: var(--text-primary);
}

.story-author span {
    font-size: var(--text-base);
    color: var(--text-secondary);
}

.story-author .batch {
    font-size: var(--text-xs);
    color: var(--text-light);
    font-style: italic;
}

/* 底部CTA */
.stories-cta {
    text-align: center;
    padding-top: 3rem;
    border-top: 1px solid rgba(15,15,15,0.08);
}

.cta-quote {
    font-family: var(--font-handwriting);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    color: var(--cl-black);
    margin-bottom: 1.5rem;
}

/* ==================== 最终CTA — nvg8 dark bold ==================== */

.final-cta {
    padding: 8rem var(--side-margin);
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 30% 70%, rgba(199,255,105,0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 30%, rgba(122,120,255,0.06) 0%, transparent 50%);
    pointer-events: none;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    text-align: center;
}

/* CTA头部 */
.cta-header {
    margin-bottom: 3rem;
}

.cta-eyebrow {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--cl-lime);
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--cl-white);
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin-bottom: 1.25rem;
}

.cta-subtitle {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: rgba(253,249,240,0.6);
    line-height: 1.7;
}

/* CTA卡片 */
.cta-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 3rem;
    margin-bottom: 2rem;
}

/* 紧迫感横幅 */
.urgency-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: rgba(199,255,105,0.1);
    padding: 1rem 2rem;
    border-radius: var(--radius-pill);
    margin-bottom: 2rem;
    border: 1px solid rgba(199,255,105,0.25);
}

.urgency-icon {
    font-size: 1.5rem;
}

.urgency-text {
    font-weight: 700;
    color: var(--cl-lime);
    font-size: var(--text-sm);
    letter-spacing: 0.05em;
}

.urgency-price {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.urgency-price .original {
    font-size: var(--text-base);
    color: rgba(253,249,240,0.4);
    text-decoration: line-through;
}

.urgency-price .discounted {
    font-size: var(--text-2xl);
    font-weight: 900;
    color: var(--cl-lime);
}

/* 利益点列表 */
.benefits-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
    text-align: left;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: clamp(0.95rem, 1.5vw, 1.1rem);
    color: rgba(253,249,240,0.75);
}

.benefit-item i {
    color: var(--cl-lime);
    font-size: 1.25rem;
}

/* 表单 */
.cta-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-group {
    width: 100%;
}

.cta-input {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 1px solid rgba(253,249,240,0.15);
    border-radius: var(--radius-pill);
    font-size: var(--text-base);
    background: rgba(255,255,255,0.06);
    color: var(--cl-white);
    transition: all 0.3s var(--ease-out);
}

.cta-input::placeholder {
    color: rgba(253,249,240,0.4);
}

.cta-input:focus {
    outline: none;
    border-color: var(--cl-lime);
    box-shadow: 0 0 0 3px rgba(199,255,105,0.15);
}

.cta-button-main {
    width: 100%;
    background: var(--cl-lime);
    color: var(--cl-black);
    padding: 1.25rem 2rem;
    border: none;
    border-radius: var(--radius-pill);
    font-size: var(--text-xl);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.cta-button-main:hover {
    transform: translateY(-2px);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 30px rgba(199,255,105,0.3);
}

/* 信任标识 */
.trust-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
}

.trust-badges .badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-xs);
    color: rgba(253,249,240,0.6);
    background: rgba(255,255,255,0.06);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(253,249,240,0.08);
}

.trust-badges .badge i {
    color: var(--cl-lime);
}

/* 替代选项 */
.cta-alternatives {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.cta-alternatives p {
    font-size: var(--text-sm);
    color: rgba(253,249,240,0.4);
}

.alt-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--cl-white);
    text-decoration: none;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border: 1px solid rgba(253,249,240,0.2);
    border-radius: var(--radius-pill);
    transition: all 0.3s var(--ease-out);
    font-size: var(--text-sm);
}

.alt-link:hover {
    border-color: var(--cl-lime);
    color: var(--cl-lime);
    transform: translateY(-2px);
}

/* ==================== 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background: rgba(255,255,255,0.8);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* 移动端导航菜单 — nvg8 dark */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background: var(--cl-black);
    z-index: 1002;
    transition: right 0.4s var(--ease-out);
    box-shadow: -8px 0 40px rgba(0,0,0,0.4);
    overflow-y: auto;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.mobile-nav-logo {
    display: flex;
    align-items: center;
}

.mobile-nav-logo .logo-mark {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
    display: flex;
    align-items: baseline;
}

.mobile-nav-logo .logo-i {
    color: var(--cl-white);
}

.mobile-nav-logo .logo-2 {
    color: var(--cl-lime);
    font-size: 2rem;
    margin: 0 -0.05em;
}

.mobile-nav-logo .logo-lab {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(253,249,240,0.5);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-left: 0.35rem;
}

.mobile-nav-close {
    background: rgba(255,255,255,0.08);
    border: none;
    font-size: 1.25rem;
    color: rgba(255,255,255,0.7);
    cursor: pointer;
    padding: 0.5rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.mobile-nav-close:hover {
    background: rgba(255,255,255,0.15);
    color: white;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    padding: 1rem 0;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.1rem 1.5rem;
    text-decoration: none;
    color: rgba(255,255,255,0.7);
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s var(--ease-out);
    border-left: 3px solid transparent;
}

.mobile-nav-link i {
    font-size: 1.1rem;
    color: var(--cl-lime);
    width: 24px;
    text-align: center;
}

.mobile-nav-link:hover {
    background: rgba(255,255,255,0.06);
    border-left-color: var(--cl-lime);
    color: var(--cl-white);
}

/* 移动端菜单遮罩 */
.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 响应式：显示移动端菜单 */
@media (max-width: 992px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .navbar {
        top: 0.75rem;
        padding: 0.5rem 1rem;
        width: calc(100% - 2rem);
        max-width: none;
        border-radius: var(--radius-pill);
        justify-content: space-between;
    }
}

@media (max-width: 1200px) {
    .nav-links {
        gap: 0.125rem;
    }
}

/* 修改内容区域通用样式 — nvg8 spacing */
.content-section {
    padding: 8rem var(--side-margin);
    border-bottom: none;
    scroll-margin-top: 100px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    color: inherit;
    text-align: center;
    margin-bottom: 4rem;
    width: 100%;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.section-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: inherit;
    width: 100%;
    max-width: none;
    text-align: left;
}

/* ==================== 统一设计语言 ==================== */

/* Unified section header (subtitle + title pattern) — nvg8 bold */
.section-header-unified {
    text-align: center;
    margin-bottom: 4rem;
    width: 100%;
}

.section-subtitle {
    font-size: var(--text-base);
    color: var(--cl-lime);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}

.section-title-unified {
    font-family: var(--font-heading);
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin-bottom: 1rem;
}

.section-description {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Intro brief */
.intro-brief {
    max-width: 750px;
    margin: 0 auto 4rem;
    text-align: center;
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    line-height: 1.85;
}

.intro-brief p {
    margin: 0;
}

/* Target audience icon card grid */
.target-audience-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    width: 100%;
    margin-bottom: 4rem;
}

.audience-card {
    background: var(--bg-white);
    border: 1px solid rgba(15,15,15,0.08);
    border-radius: var(--radius-lg);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.4s var(--ease-out);
}

.audience-card:hover {
    transform: translateY(-4px);
    border-color: var(--cl-black);
    box-shadow: var(--shadow-md);
}

.audience-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1rem;
    background: var(--cl-black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.audience-icon i {
    font-size: 1.4rem;
    color: var(--cl-lime);
}

.audience-card h3 {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--cl-black);
    margin-bottom: 0.5rem;
}

.audience-card p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.7;
}

@media (max-width: 1024px) {
    .target-audience-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .target-audience-grid {
        grid-template-columns: 1fr;
    }

    .section-title-unified {
        font-size: var(--text-3xl);
    }
}

/* Outcomes grid with numbers */
.outcomes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
    width: 100%;
}

.outcomes-grid .outcome-item:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    max-width: calc(50% - 0.75rem);
}

.outcome-item {
    background: var(--bg-white);
    border: 1px solid rgba(15,15,15,0.08);
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: left;
    transition: all 0.4s var(--ease-out);
    position: relative;
}

.outcome-item:hover {
    transform: translateY(-4px);
    border-color: var(--cl-black);
}

.outcome-number {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 900;
    color: rgba(15,15,15,0.08);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.outcome-item h3 {
    color: var(--cl-black);
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
    font-family: var(--font-heading);
    font-weight: 700;
}

.outcome-item p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Alternating section backgrounds — nvg8 dark/cream ===== */
#intro {
    background: var(--bg-cream);
}

#faculty {
    background: var(--bg-dark);
    color: var(--text-on-dark);
}

#faculty .section-subtitle {
    color: var(--cl-lime);
}

#faculty .section-title-unified {
    color: var(--cl-white);
}

#faculty .faculty-name {
    color: var(--cl-white);
}

#faculty .faculty-title {
    color: var(--cl-lime);
}

#faculty .faculty-title strong {
    color: var(--cl-lime);
}

#faculty .faculty-email {
    color: rgba(253,249,240,0.7);
}

#faculty .faculty-positions li {
    color: rgba(253,249,240,0.8);
}

#faculty .faculty-description {
    color: rgba(253,249,240,0.7);
}

#faculty .faculty-lead {
    color: var(--cl-white);
}

#faculty .faculty-highlights {
    border-top-color: rgba(253,249,240,0.18);
}

#faculty .faculty-highlight-item {
    color: rgba(253,249,240,0.85);
}

#faculty .faculty-image img {
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}

#community {
    background: var(--bg-cream);
}

/* Section subtitles on cream backgrounds — dark pill for lime visibility */
#intro .section-subtitle,
#community .section-subtitle {
    display: inline-block;
    background: var(--cl-black);
    padding: 0.35rem 1rem;
    border-radius: var(--radius-pill);
}

/* Section title on dark section */
#faculty .section-title {
    color: var(--cl-white);
}

/* ==================== Floating Chat Widget ==================== */

.chat-widget {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.75rem;
}

/* FAB button — nvg8 dark/lime */
.chat-fab {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--cl-black);
    border: 2px solid var(--cl-lime);
    cursor: pointer;
    box-shadow: 0 4px 24px rgba(199,255,105,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.3s var(--ease-out);
}

.chat-fab:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 32px rgba(199,255,105,0.3);
    background: var(--cl-lime);
}

.chat-fab:hover .chat-fab-icon {
    filter: brightness(0);
}

.chat-widget.open .chat-fab {
    background: var(--cl-black);
    border-color: rgba(255,255,255,0.2);
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.chat-fab-icon {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    object-fit: contain;
    transition: opacity 0.2s;
}

.chat-widget.open .chat-fab-icon {
    opacity: 0;
}

.chat-widget.open .chat-fab::after {
    content: '\f00d';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: white;
    font-size: 1.25rem;
    position: absolute;
}

/* Pulse ring */
.chat-fab-pulse {
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 2px solid var(--cl-lime);
    opacity: 0;
    animation: fabPulse 2.5s ease-out infinite;
}

.chat-widget.open .chat-fab-pulse {
    display: none;
}

@keyframes fabPulse {
    0% { transform: scale(1); opacity: 0.6; }
    100% { transform: scale(1.4); opacity: 0; }
}

/* Chat Panel — nvg8 dark */
.chat-panel {
    width: 380px;
    max-height: 540px;
    background: var(--cl-black);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 48px rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.08);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.chat-widget.open .chat-panel {
    display: flex;
    animation: chatSlideUp 0.3s ease;
}

@keyframes chatSlideUp {
    from { opacity: 0; transform: translateY(16px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Panel header */
.chat-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1rem;
    background: rgba(255,255,255,0.04);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    color: var(--cl-white);
    flex-shrink: 0;
}

.chat-panel-profile {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.chat-panel-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: contain;
    background: var(--cl-lime);
    padding: 4px;
}

.chat-panel-name {
    font-weight: 600;
    font-size: 0.9rem;
    display: block;
    line-height: 1.2;
}

.chat-panel-status {
    font-size: 0.7rem;
    opacity: 0.85;
}

.chat-panel-close {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.6);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 0.85rem;
}

.chat-panel-close:hover {
    background: rgba(255,255,255,0.12);
    color: white;
}

/* Messages area in panel */
.chat-panel .chat-messages {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 0.875rem;
    background: rgba(255,255,255,0.02);
}

/* Input area */
.chat-panel-input {
    padding: 0.625rem 0.75rem;
    border-top: 1px solid rgba(255,255,255,0.06);
    background: rgba(255,255,255,0.02);
    flex-shrink: 0;
}

.chat-panel-input-row {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-pill);
    padding: 0.375rem 0.5rem;
    transition: border-color 0.2s;
}

.chat-panel-input-row:focus-within {
    border-color: var(--cl-lime);
}

.chat-panel-input .chat-input {
    flex: 1;
    border: none;
    background: transparent;
    resize: none;
    font-size: 0.875rem;
    line-height: 1.4;
    min-height: unset;
    height: auto;
    max-height: 80px;
    padding: 0.375rem 0.25rem;
    margin-bottom: 0;
    font-family: var(--font-body);
    color: var(--cl-white);
}

.chat-panel-input .chat-input::placeholder {
    color: rgba(253,249,240,0.35);
}

.chat-panel-input .chat-input:focus {
    outline: none;
}

.chat-panel-input .send-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--cl-lime);
    color: var(--cl-black);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s var(--ease-out);
    font-size: 0.8rem;
}

.chat-panel-input .send-btn:hover {
    background: #b3f05e;
    transform: scale(1.05);
}

.chat-panel-hint {
    text-align: center;
    font-size: 0.65rem;
    color: rgba(253,249,240,0.3);
    margin-top: 0.375rem;
    display: block;
}

.chat-panel-hint code {
    background: rgba(255,255,255,0.08);
    color: var(--cl-lime);
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 0.65rem;
}

/* Mobile: full-width panel */
@media (max-width: 480px) {
    .chat-widget {
        bottom: 1rem;
        right: 1rem;
    }

    .chat-panel {
        width: calc(100vw - 2rem);
        max-height: calc(100vh - 6rem);
    }
}

/* 课程结构样式 */
.module-item {
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: left;
}

.module-item h3 {
    color: var(--cl-lime);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 700;
}

/* 响应式设计补充 */
@media (max-width: 768px) {
    .content-section {
        scroll-margin-top: 90px;
    }

    :root {
        --navbar-height: 75px;
    }

    .section-title {
        margin-bottom: 3rem;
    }

    .outcomes-grid {
        grid-template-columns: 1fr;
    }

    /* Journey (course structure) — single column on mobile */
    .journey-stop,
    .journey-stop:nth-child(odd),
    .journey-stop:nth-child(even) {
        flex-direction: column;
        align-items: center;
        padding-left: 0;
        padding-right: 0;
    }

    .stop-marker {
        position: relative;
        left: auto;
        transform: none;
        margin-bottom: 1rem;
    }

    .stop-card {
        width: 100%;
        max-width: 100%;
    }

    .path-line {
        left: 50%;
    }

    /* Brand story timeline — single column on mobile */
    .timeline-item,
    .timeline-item:nth-child(even) {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .timeline-content {
        width: 100%;
    }

    .timeline-line {
        left: 50%;
    }

    .timeline-dot {
        position: relative;
        left: auto;
        transform: none;
        margin-bottom: 0.75rem;
    }

    /* CTA section — single column */
    .benefits-list {
        grid-template-columns: 1fr;
    }

    .urgency-banner {
        flex-wrap: wrap;
        justify-content: center;
        text-align: center;
    }

    /* Student stories transformation — stack vertically */
    .story-transformation {
        flex-direction: column;
    }

    .story-transformation .arrow {
        transform: rotate(90deg);
    }

    /* Hero responsive adjustments */
    .hero {
        padding: 6rem 5% 3rem;
    }

    .hero-line {
        font-size: var(--text-4xl);
    }

    .hero-line.highlight {
        font-size: calc(var(--text-4xl) * 1.1);
    }

    .hero-subtitle {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }
}

/* 修改师资介绍样式 */
.faculty-profile {
    display: flex;
    gap: 3rem;
    align-items: flex-start;
}

.faculty-image {
    flex: 0 0 300px;
}

.faculty-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.faculty-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.faculty-name {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    margin-top: -0.3rem;
    letter-spacing: -0.01em;
}

.faculty-title {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.faculty-email {
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.faculty-positions {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
}

.faculty-positions li {
    margin-bottom: 0.6rem;
    line-height: 1.6;
    font-size: 1.05rem;
}

.faculty-description {
    line-height: 1.7;
    font-size: 1.05rem;
    margin-top: auto;
    padding-bottom: 0.2rem;
}

/* 师资 · 丰富版:定位金句 + 代表成就 */
.faculty-lead {
    font-family: var(--font-heading);
    font-size: 1.18rem;
    line-height: 1.7;
    font-weight: 500;
    margin: 0 0 1.4rem 0;
    padding-left: 1rem;
    border-left: 3px solid var(--cl-lime);
}

.faculty-highlights {
    margin: 0.2rem 0 1.4rem 0;
    padding-top: 1.2rem;
    border-top: 1px solid rgba(15, 15, 15, 0.12);
}

.faculty-highlight-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.95rem;
    letter-spacing: 0.08em;
    margin: 0 0 0.75rem 0;
    color: var(--cl-orange);
}

.faculty-highlight-item {
    line-height: 1.7;
    font-size: 1.02rem;
    margin: 0 0 0.75rem 0;
}

.faculty-highlight-item strong {
    display: inline-block;
    margin-right: 0.5rem;
    padding: 0.05rem 0.55rem;
    border-radius: 6px;
    background: var(--cl-lime);
    color: var(--cl-black);
    font-weight: 800;
    font-size: 0.9em;
}

/* 响应式设计补充 */
@media (max-width: 768px) {
    .faculty-profile {
        flex-direction: column;
        gap: 2rem;
    }

    .faculty-image {
        flex: 0 0 auto;
        max-width: 250px;
        margin: 0 auto;
    }

    .faculty-info {
        height: auto;
    }

    .faculty-name {
        margin-top: 0;
        text-align: center;
    }

    .faculty-title {
        text-align: center;
    }

    .faculty-email {
        text-align: center;
    }
}

/* ==================== Chat Messages (shared by floating widget) ==================== */

.chat-messages {
    overflow-y: auto;
    padding: 1rem;
    background: rgba(255,255,255,0.02);
}

/* ==================== Chat Message Styles ==================== */

.message {
    display: flex;
    margin-bottom: 0.625rem;
    animation: msgFadeIn 0.25s ease;
}

@keyframes msgFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.user-message {
    justify-content: flex-end;
}

.assistant-message {
    justify-content: flex-start;
}

.message-content {
    max-width: 88%;
    padding: 0.75rem 1rem;
    border-radius: 14px;
    word-wrap: break-word;
    font-size: 0.875rem;
    line-height: 1.5;
}

.user-message .message-content {
    background: var(--cl-lime);
    color: var(--cl-black);
    border-bottom-right-radius: 4px;
}

.assistant-message .message-content {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--cl-white);
    border-bottom-left-radius: 4px;
}

.user-message .message-text,
.user-message .message-text * {
    color: var(--cl-black) !important;
}

.message-text {
    line-height: 1.55;
    overflow-wrap: break-word;
    word-break: break-word;
}

.message-text h2 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0.75rem 0 0.5rem;
    color: var(--cl-lime);
}

.message-text h3 {
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0.5rem 0 0.35rem;
    color: var(--cl-lime);
}

.message-text p {
    margin-bottom: 0.5rem;
}

.message-text ul,
.message-text ol {
    padding-left: 1.1rem;
    margin: 0.35rem 0;
}

.message-text li {
    margin-bottom: 0.3rem;
}

.message-text strong {
    color: var(--cl-lime);
    font-weight: 600;
}

.typing::after {
    content: '';
    display: inline-block;
    width: 4px;
    height: 12px;
    background: var(--cl-lime);
    margin-left: 4px;
    animation: blink 1s infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* 思考过程样式 — dark theme */
.thinking-process {
    font-size: 0.7rem;
    color: rgba(253,249,240,0.35);
    padding: 0.5rem 0.75rem 0.5rem 1rem;
    margin: 0.35rem 0 0.5rem 0;
    position: relative;
    line-height: 1.4;
    border-left: 2px solid rgba(199,255,105,0.2);
}

.thinking-process p,
.thinking-process li {
    color: rgba(253,249,240,0.35);
    font-size: 0.7rem;
    margin-bottom: 0.4rem;
    line-height: 1.4;
    font-weight: normal !important;
}

.thinking-process ul,
.thinking-process ol {
    list-style: none;
    padding: 0;
    margin: 0;
}

.thinking-process strong,
.thinking-process b,
.thinking-process em,
.thinking-process i {
    font-weight: normal !important;
    font-style: normal !important;
}

.thought-divider {
    margin: 0.75rem 0;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.final-answer {
    padding: 0.25rem 0;
    font-size: 0.875rem;
    color: var(--cl-white);
}

/* 页脚样式 — nvg8 dark */
.site-footer {
    background-color: var(--cl-black);
    padding-top: 4rem;
    margin-top: 0;
    color: rgba(253,249,240,0.8);
    border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-logo {
    height: 40px;
    width: auto;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2rem;
    width: 90%;
}

/* 左侧区域样式 */
.footer-section:first-child {
    flex: 0 0 auto;
    min-width: 300px;
    margin-right: auto;
}

.footer-description {
    color: rgba(253,249,240,0.5);
    font-size: var(--text-sm);
    line-height: 1.6;
}

/* 中间区域样式 */
.footer-section:nth-child(2) {
    flex: 0 0 auto;
    min-width: 250px;
    margin: 0 auto;
}

/* 右侧区域样式 */
.footer-section:last-child {
    flex: 0 0 auto;
    min-width: 200px;
    margin-left: auto;
    text-align: right;
}

.footer-section h4 {
    color: var(--cl-white);
    font-size: var(--text-sm);
    margin-bottom: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* 联系信息样式 */
.contact-list {
    list-style: none;
    padding: 0;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.8rem;
    color: rgba(253,249,240,0.6);
    font-size: var(--text-sm);
}

.contact-list i {
    color: var(--cl-lime);
    width: 20px;
    opacity: 0.7;
}

.contact-list span {
    color: rgba(253,249,240,0.6);
}

/* 社交媒体图标样式 */
.social-links {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    color: rgba(253,249,240,0.6);
    transition: all 0.3s var(--ease-out);
    text-decoration: none;
}

.social-link:hover {
    background: var(--cl-lime);
    border-color: var(--cl-lime);
    color: var(--cl-black);
}

/* 底部版权区域 */
.footer-bottom {
    margin-top: 3rem;
    padding: 1.5rem 0;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-bottom .footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    color: rgba(253,249,240,0.4);
    margin-right: auto;
    font-size: var(--text-sm);
}

.footer-links {
    margin-left: auto;
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.footer-links a {
    color: rgba(253,249,240,0.5);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--cl-lime);
}

.separator {
    color: rgba(255,255,255,0.15);
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .footer-container {
        justify-content: space-between;
        gap: 3rem;
    }
    
    .footer-section:nth-child(2) {
        margin: 0;  /* 移动端取消居中 */
    }
}

@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }
    
    .footer-section,
    .footer-section:first-child,
    .footer-section:nth-child(2),
    .footer-section:last-child {
        width: 100%;
        margin: 0;
        text-align: left;
    }
    
    .footer-bottom .footer-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .footer-links {
        margin: 0;
    }
}

/* 知识社区样式 — nvg8 */
.community-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.community-description {
    max-width: none;
    margin: 0;
    text-align: center;
    line-height: 1.85;
    color: var(--text-secondary);
    padding: 0;
    font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.community-description p {
    margin-bottom: 1rem;
}

.community-survey {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 4rem;
    margin-top: 3rem;
}

.survey-content {
    background: var(--bg-white);
    color: var(--text-primary);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(15,15,15,0.08);
}

.survey-description p {
    color: var(--text-secondary);
}

.survey-left {
    flex: 0 0 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.qrcode-img {
    width: 200px;
    height: 200px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 微信公众号样式 — nvg8 */
.wechat-container {
    text-align: center;
    padding: 3rem;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(15,15,15,0.08);
}

.wechat-title {
    font-family: var(--font-heading);
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    color: var(--cl-black);
    margin-bottom: 2rem;
    font-weight: 700;
}

.wechat-qrcode {
    display: inline-block;
    background: var(--bg-cream);
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(15,15,15,0.06);
    transition: all 0.4s var(--ease-out);
}

.wechat-qrcode:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.wechat-img {
    width: 220px;
    height: 220px;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.wechat-tip {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0;
    font-weight: 600;
}
.survey-button {
    display: inline-block;
    padding: 0.875rem 2rem;
    background: var(--cl-black);
    color: var(--cl-lime);
    text-decoration: none;
    border-radius: var(--radius-pill);
    font-weight: 700;
    transition: all 0.3s var(--ease-out);
}

.survey-button:hover {
    background: var(--cl-lime);
    color: var(--cl-black);
    transform: translateY(-2px);
}

.survey-right {
    flex: 1;
    max-width: 600px;
}

.survey-preview {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .community-survey {
        flex-direction: column;
        gap: 3rem;
    }

    .survey-left {
        flex: 0 0 auto;
    }

    .survey-right {
        width: 100%;
        max-width: 500px;
        margin: 0 auto;
    }

    .community-content {
        max-width: 100%;  /* 在移动端取消最大宽度限制 */
    }
    
    .community-description {
        padding: 0 1rem;  /* 在移动端添加边距 */
    }
}

@media (max-width: 576px) {
    .qrcode-img {
        width: 180px;
        height: 180px;
    }

    .community-description {
        padding: 0;  /* 移除移动端的内边距 */
    }
} 

/* ===== v3.1 新增:旅程站点链接 + 爱兔宝 SVG 头像适配 ===== */
.stop-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-weight:700;font-size:0.9rem;color:var(--cl-orange);text-decoration:none}
.stop-link:hover{gap:10px}
.stop-link i{transition:transform .2s}
.stop-link:hover i{transform:translateX(3px)}
.story-author a.batch{color:var(--cl-blue);font-weight:700}
.story-author a.batch:hover{text-decoration:underline}
.chat-panel-avatar,.chat-fab-icon{border-radius:50%;background:#fff;object-fit:contain}