/* RiverPark Advisory - Main Stylesheet */

:root {
    --primary-color: #015FC9;
    --footer-bg: #15233C;
    --text-dark: #2c3e50;
    --text-light: #6c757d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 15px rgba(0,0,0,0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: #0147a1;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-wide {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

/* 首页导航透明效果 */
.home-page .site-header {
    background: transparent;
    box-shadow: none;
    position: fixed;
    width: 100%;
}

.home-page .site-header.scrolled {
    background: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.home-page .site-header.scrolled .logo,
.home-page .site-header.scrolled .main-nav a {
    color: var(--text-dark);
}

.home-page .site-header.scrolled .mobile-menu-toggle {
    color: var(--text-dark);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    transition: color 0.3s ease;
}

/* 首页 logo 白色 */
.home-page .logo {
    color: white;
}

.logo i {
    margin-right: 0.5rem;
}

/* Navigation */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.main-nav a {
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s ease;
}

/* 首页导航链接白色 */
.home-page .main-nav a {
    color: white;
}

.main-nav a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.main-nav a:hover:after,
.main-nav a.active:after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
    transition: color 0.3s ease;
}

/* 首页移动端菜单按钮白色 */
.home-page .mobile-menu-toggle {
    color: white;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
    display: block; /* 默认隐藏，仅在视频加载失败时显示 */
}

.hero-video-wrapper:not(:has(video[src])) .hero-bg,
.hero-video-wrapper video:not([src]) ~ .hero-bg {
    display: block;
}

.hero-bg:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

/* Hero Video */
.hero-video-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 2rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.95);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

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

.btn-primary:hover {
    background: #0147a1;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(1, 95, 201, 0.3);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

/* Section Styles */
section {
    padding: 5rem 0;
}

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

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-title p {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

.section-light {
    background: var(--bg-light);
}

/* Quote Section */
.quote-section {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.quote-text {
    font-size: 1.5rem;
    font-style: italic;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 2rem;
    position: relative;
}

.quote-text:before {
    content: '"';
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.3;
    position: absolute;
    top: -20px;
    left: -40px;
}

.quote-author {
    text-align: right;
    font-size: 1.1rem;
    color: var(--text-dark);
    font-weight: 600;
}

.quote-author small {
    display: block;
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 400;
    font-style: italic;
}

/* Content Cards */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.content-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.content-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0,0,0,0.15);
}

.content-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.content-card .icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Article Cards for Perspectives */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.article-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.article-card-content {
    padding: 2rem;
}

.article-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.article-card p {
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.read-more {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more:hover {
    gap: 0.8rem;
}

/* Page Header */
.page-header {
    position: relative;
    background: linear-gradient(135deg, var(--primary-color), #0147a1);
    background-image: url('../images/ny-banner-1.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    padding: 6rem 0;
    text-align: center;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(1, 95, 201, 0.2);
    z-index: 1;
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.95);
}

/* Content Section */
.content-section {
    padding: 4rem 0;
}

.content-section h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    margin-top: 2rem;
}

.content-section h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.content-text {
    max-width: 900px;
    margin: 0 auto;
}

.content-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.team-member {
    text-align: center;
}

.team-member-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--primary-color);
}

.team-member h3 {
    margin-bottom: 0.5rem;
}

.team-member .position {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.team-member .quote {
    font-style: italic;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

/* Strategy Cards */
.strategy-list {
    max-width: 1000px;
    margin: 0 auto;
}

.strategy-item {
    background: white;
    padding: 3rem;
    margin-bottom: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border-left: 5px solid var(--primary-color);
}

.strategy-item h3 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.strategy-item h4 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

/* In-Page Navigation */
.in-page-nav {
    background: var(--bg-light);
    padding: 1.5rem 0;
    margin-bottom: 3rem;
    border-radius: 10px;
    position: sticky;
    top: 80px;
    z-index: 100;
}

.in-page-nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.in-page-nav a {
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
    transition: all 0.3s ease;
    display: block;
}

.in-page-nav a:hover {
    background: var(--primary-color);
    color: white;
}

/* Blueprint List (How to Invest) */
.blueprint-list {
    max-width: 900px;
    margin: 3rem auto 0;
}

.blueprint-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-color);
}

.blueprint-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.3;
    min-width: 80px;
}

.blueprint-content h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.blueprint-content p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

/* Contact Form */
.contact-section {
    /* max-width: 800px; */
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 10px;
}

.contact-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-item h3 {
    margin-bottom: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* Footer */
.site-footer {
    background: var(--footer-bg);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    margin-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

.footer-tagline {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        transition: left 0.3s ease;
        box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    }

    .main-nav.active {
        left: 0;
    }

    .main-nav ul {
        flex-direction: column;
        padding: 2rem;
        gap: 0;
    }

    .main-nav li {
        border-bottom: 1px solid var(--border-color);
    }

    .main-nav a {
        display: block;
        padding: 1rem 0;
        color: var(--text-dark)!important;
    }

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

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }

    .page-header h1 {
        font-size: 2rem;
    }

    .quote-text {
        font-size: 1.2rem;
    }

    .quote-text:before {
        font-size: 2.5rem;
        left: -20px;
        top: -10px;
    }

    .content-grid,
    .article-grid {
        grid-template-columns: 1fr;
    }

    .blueprint-item {
        flex-direction: column;
        gap: 1rem;
    }

    .blueprint-number {
        font-size: 2rem;
    }

    .in-page-nav {
        position: static;
    }

    .in-page-nav ul {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 480px) {
    section {
        padding: 3rem 0;
    }

    .hero {
        min-height: 500px;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* Animation classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
}

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

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mt-3 { margin-top: 3rem; }