/* ============================================================
   海外动画文化观察站 - 主样式表
   专属前缀: b2s01k03n03-ripple-
   设计风格: 电台叙事地图路线式导航，语气潮流先锋
   ============================================================ */

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

:root {
    --ripple-primary: #6C3CE1;
    --ripple-secondary: #FF6B35;
    --ripple-accent: #00D4AA;
    --ripple-dark: #1A1A2E;
    --ripple-darker: #0F0F1A;
    --ripple-light: #F8F9FA;
    --ripple-gray: #6B7280;
    --ripple-border: #E5E7EB;
    --ripple-card-bg: #FFFFFF;
    --ripple-gradient-1: linear-gradient(135deg, #6C3CE1 0%, #FF6B35 100%);
    --ripple-gradient-2: linear-gradient(135deg, #1A1A2E 0%, #6C3CE1 100%);
    --ripple-shadow: 0 4px 20px rgba(108, 60, 225, 0.15);
    --ripple-radius: 12px;
    --ripple-font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

body {
    font-family: var(--ripple-font);
    line-height: 1.8;
    color: #333;
    background: var(--ripple-light);
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    color: var(--ripple-secondary);
}

/* === Header & Navigation === */
.b2s01k03n03-ripple-header {
    background: var(--ripple-darker);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.b2s01k03n03-ripple-header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.b2s01k03n03-ripple-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.b2s01k03n03-ripple-logo img {
    height: 40px;
    width: auto;
}

.b2s01k03n03-ripple-nav-list {
    display: flex;
    list-style: none;
    gap: 5px;
}

.b2s01k03n03-ripple-nav-item {
    position: relative;
}

.b2s01k03n03-ripple-link-element {
    display: block;
    padding: 10px 16px;
    color: #E0E0E0;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.b2s01k03n03-ripple-link-element:hover,
.b2s01k03n03-ripple-link-element.active {
    color: #fff;
    background: var(--ripple-primary);
}

.b2s01k03n03-ripple-mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* === Hero Banner === */
.b2s01k03n03-ripple-hero-section {
    position: relative;
    height: 600px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.b2s01k03n03-ripple-hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.5);
}

.b2s01k03n03-ripple-hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    padding: 20px;
    max-width: 800px;
}

.b2s01k03n03-ripple-hero-content h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.b2s01k03n03-ripple-hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

.b2s01k03n03-ripple-cta-btn {
    display: inline-block;
    padding: 14px 36px;
    background: var(--ripple-gradient-1);
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
}

.b2s01k03n03-ripple-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(108, 60, 225, 0.4);
    color: #fff;
}

/* === Section Common === */
.b2s01k03n03-ripple-section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.b2s01k03n03-ripple-section-dark {
    background: var(--ripple-dark);
    color: #fff;
    max-width: 100%;
    padding: 80px 20px;
}

.b2s01k03n03-ripple-section-dark .b2s01k03n03-ripple-section-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.b2s01k03n03-ripple-section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 15px;
    color: var(--ripple-dark);
}

.b2s01k03n03-ripple-section-dark .b2s01k03n03-ripple-section-title {
    color: #fff;
}

.b2s01k03n03-ripple-section-subtitle {
    text-align: center;
    color: var(--ripple-gray);
    font-size: 1.05rem;
    margin-bottom: 50px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.b2s01k03n03-ripple-section-dark .b2s01k03n03-ripple-section-subtitle {
    color: #aaa;
}

/* === Card Grid === */
.b2s01k03n03-ripple-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.b2s01k03n03-ripple-card {
    background: var(--ripple-card-bg);
    border-radius: var(--ripple-radius);
    overflow: hidden;
    box-shadow: var(--ripple-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.b2s01k03n03-ripple-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(108, 60, 225, 0.25);
}

.b2s01k03n03-ripple-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.b2s01k03n03-ripple-card-body {
    padding: 24px;
}

.b2s01k03n03-ripple-card-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--ripple-dark);
}

.b2s01k03n03-ripple-card-meta {
    font-size: 0.85rem;
    color: var(--ripple-gray);
    margin-bottom: 12px;
}

.b2s01k03n03-ripple-card-text {
    font-size: 0.95rem;
    color: #555;
    line-height: 1.7;
}

.b2s01k03n03-ripple-card-link {
    display: inline-block;
    margin-top: 15px;
    color: var(--ripple-primary);
    font-weight: 500;
}

/* === Feature Grid === */
.b2s01k03n03-ripple-feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.b2s01k03n03-ripple-feature-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--ripple-card-bg);
    border-radius: var(--ripple-radius);
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.b2s01k03n03-ripple-feature-item:hover {
    transform: translateY(-3px);
}

.b2s01k03n03-ripple-feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: var(--ripple-gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
}

.b2s01k03n03-ripple-feature-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--ripple-dark);
}

.b2s01k03n03-ripple-feature-desc {
    font-size: 0.9rem;
    color: var(--ripple-gray);
}

/* === Video Section === */
.b2s01k03n03-ripple-video-wrapper {
    max-width: 800px;
    margin: 0 auto;
    border-radius: var(--ripple-radius);
    overflow: hidden;
    box-shadow: var(--ripple-shadow);
}

.b2s01k03n03-ripple-video-wrapper video {
    width: 100%;
    display: block;
}

/* === FAQ Section === */
.b2s01k03n03-ripple-faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.b2s01k03n03-ripple-faq-item {
    border: 1px solid var(--ripple-border);
    border-radius: var(--ripple-radius);
    margin-bottom: 15px;
    overflow: hidden;
    background: #fff;
}

.b2s01k03n03-ripple-faq-question {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--ripple-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.b2s01k03n03-ripple-faq-answer {
    padding: 0 24px 20px;
    color: #555;
    line-height: 1.8;
    font-size: 0.95rem;
}

/* === Interactive Tool === */
.b2s01k03n03-ripple-tool-section {
    background: linear-gradient(135deg, #F0E6FF 0%, #E6F7FF 100%);
    padding: 60px 20px;
    border-radius: var(--ripple-radius);
    margin: 40px auto;
    max-width: 900px;
    text-align: center;
}

.b2s01k03n03-ripple-tool-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--ripple-dark);
}

.b2s01k03n03-ripple-quiz-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: left;
}

.b2s01k03n03-ripple-quiz-question {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--ripple-dark);
}

.b2s01k03n03-ripple-quiz-options {
    list-style: none;
    margin-bottom: 20px;
}

.b2s01k03n03-ripple-quiz-options li {
    padding: 12px 18px;
    margin-bottom: 8px;
    background: #fff;
    border: 2px solid var(--ripple-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.b2s01k03n03-ripple-quiz-options li:hover {
    border-color: var(--ripple-primary);
    background: #F8F0FF;
}

.b2s01k03n03-ripple-quiz-options li.correct {
    border-color: var(--ripple-accent);
    background: #E6FFF8;
}

.b2s01k03n03-ripple-quiz-options li.wrong {
    border-color: #FF4444;
    background: #FFF0F0;
}

.b2s01k03n03-ripple-quiz-result {
    padding: 15px;
    border-radius: 8px;
    font-weight: 500;
    margin-top: 15px;
    display: none;
}

/* === Trust Section === */
.b2s01k03n03-ripple-trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}

.b2s01k03n03-ripple-trust-item {
    padding: 25px 15px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--ripple-radius);
    border: 1px solid rgba(255,255,255,0.1);
}

.b2s01k03n03-ripple-trust-number {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--ripple-accent);
    margin-bottom: 5px;
}

.b2s01k03n03-ripple-trust-label {
    font-size: 0.9rem;
    color: #ccc;
}

/* === Breadcrumb === */
.b2s01k03n03-ripple-breadcrumb {
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
    font-size: 0.9rem;
}

.b2s01k03n03-ripple-breadcrumb a {
    color: var(--ripple-gray);
}

.b2s01k03n03-ripple-breadcrumb span {
    color: var(--ripple-primary);
}

/* === Footer === */
.b2s01k03n03-ripple-footer {
    background: var(--ripple-darker);
    color: #ccc;
    padding: 60px 20px 30px;
}

.b2s01k03n03-ripple-footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.b2s01k03n03-ripple-footer-col h4 {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.b2s01k03n03-ripple-footer-col ul {
    list-style: none;
}

.b2s01k03n03-ripple-footer-col li {
    margin-bottom: 10px;
}

.b2s01k03n03-ripple-footer-col a {
    color: #aaa;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.b2s01k03n03-ripple-footer-col a:hover {
    color: var(--ripple-accent);
}

.b2s01k03n03-ripple-footer-col p {
    font-size: 0.9rem;
    line-height: 1.8;
    color: #aaa;
}

.b2s01k03n03-ripple-footer-bottom {
    max-width: 1200px;
    margin: 40px auto 0;
    padding-top: 25px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 0.85rem;
    color: #888;
}

.b2s01k03n03-ripple-footer-social {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.b2s01k03n03-ripple-footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    color: #ccc;
    font-size: 0.85rem;
    transition: all 0.3s;
}

.b2s01k03n03-ripple-footer-social a:hover {
    background: var(--ripple-primary);
    color: #fff;
}

/* === Page Header (Inner Pages) === */
.b2s01k03n03-ripple-page-header {
    background: var(--ripple-gradient-2);
    padding: 60px 20px;
    text-align: center;
    color: #fff;
}

.b2s01k03n03-ripple-page-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.b2s01k03n03-ripple-page-header p {
    font-size: 1.05rem;
    opacity: 0.9;
}

/* === Content Layout === */
.b2s01k03n03-ripple-content-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 50px 20px;
}

.b2s01k03n03-ripple-content-wrapper h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin: 40px 0 15px;
    color: var(--ripple-dark);
}

.b2s01k03n03-ripple-content-wrapper h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 30px 0 12px;
    color: var(--ripple-dark);
}

.b2s01k03n03-ripple-content-wrapper p {
    margin-bottom: 18px;
    color: #444;
    line-height: 1.9;
}

/* === Article Meta === */
.b2s01k03n03-ripple-article-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--ripple-border);
    font-size: 0.9rem;
    color: var(--ripple-gray);
}

/* === Form Styles === */
.b2s01k03n03-ripple-form-group {
    margin-bottom: 20px;
}

.b2s01k03n03-ripple-form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--ripple-dark);
}

.b2s01k03n03-ripple-form-group input,
.b2s01k03n03-ripple-form-group textarea,
.b2s01k03n03-ripple-form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--ripple-border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--ripple-font);
    transition: border-color 0.3s;
}

.b2s01k03n03-ripple-form-group input:focus,
.b2s01k03n03-ripple-form-group textarea:focus {
    outline: none;
    border-color: var(--ripple-primary);
}

.b2s01k03n03-ripple-form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.b2s01k03n03-ripple-submit-btn {
    display: inline-block;
    padding: 14px 40px;
    background: var(--ripple-gradient-1);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.b2s01k03n03-ripple-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108, 60, 225, 0.3);
}

/* === Timeline === */
.b2s01k03n03-ripple-timeline {
    position: relative;
    padding-left: 30px;
    margin: 30px 0;
}

.b2s01k03n03-ripple-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--ripple-gradient-1);
    border-radius: 3px;
}

.b2s01k03n03-ripple-timeline-item {
    position: relative;
    margin-bottom: 30px;
    padding-left: 20px;
}

.b2s01k03n03-ripple-timeline-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 5px;
    width: 12px;
    height: 12px;
    background: var(--ripple-primary);
    border-radius: 50%;
    border: 3px solid var(--ripple-light);
}

.b2s01k03n03-ripple-timeline-year {
    font-weight: 700;
    color: var(--ripple-primary);
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.b2s01k03n03-ripple-timeline-desc {
    color: #555;
    font-size: 0.95rem;
}

/* === Team Grid === */
.b2s01k03n03-ripple-team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin: 30px 0;
}

.b2s01k03n03-ripple-team-card {
    text-align: center;
    padding: 25px 15px;
    background: #fff;
    border-radius: var(--ripple-radius);
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.b2s01k03n03-ripple-team-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 15px;
    object-fit: cover;
}

.b2s01k03n03-ripple-team-name {
    font-weight: 600;
    color: var(--ripple-dark);
    margin-bottom: 5px;
}

.b2s01k03n03-ripple-team-role {
    font-size: 0.85rem;
    color: var(--ripple-gray);
}

/* === Related Posts === */
.b2s01k03n03-ripple-related-posts {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--ripple-border);
}

.b2s01k03n03-ripple-related-posts h3 {
    margin-bottom: 20px;
}

.b2s01k03n03-ripple-related-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* === Responsive Design === */
@media (max-width: 1200px) {
    .b2s01k03n03-ripple-card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .b2s01k03n03-ripple-feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .b2s01k03n03-ripple-footer-inner {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .b2s01k03n03-ripple-hero-content h1 {
        font-size: 2.2rem;
    }
    .b2s01k03n03-ripple-trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .b2s01k03n03-ripple-team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .b2s01k03n03-ripple-related-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .b2s01k03n03-ripple-nav-list {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--ripple-darker);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    }
    .b2s01k03n03-ripple-nav-list.active {
        display: flex;
    }
    .b2s01k03n03-ripple-mobile-toggle {
        display: block;
    }
    .b2s01k03n03-ripple-hero-section {
        height: 450px;
    }
    .b2s01k03n03-ripple-hero-content h1 {
        font-size: 1.8rem;
    }
    .b2s01k03n03-ripple-card-grid {
        grid-template-columns: 1fr;
    }
    .b2s01k03n03-ripple-feature-grid {
        grid-template-columns: 1fr;
    }
    .b2s01k03n03-ripple-footer-inner {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .b2s01k03n03-ripple-section {
        padding: 50px 15px;
    }
    .b2s01k03n03-ripple-section-title {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .b2s01k03n03-ripple-hero-section {
        height: 380px;
    }
    .b2s01k03n03-ripple-hero-content h1 {
        font-size: 1.5rem;
    }
    .b2s01k03n03-ripple-hero-content p {
        font-size: 1rem;
    }
    .b2s01k03n03-ripple-trust-grid {
        grid-template-columns: 1fr;
    }
    .b2s01k03n03-ripple-team-grid {
        grid-template-columns: 1fr;
    }
    .b2s01k03n03-ripple-related-list {
        grid-template-columns: 1fr;
    }
    .b2s01k03n03-ripple-page-header h1 {
        font-size: 1.6rem;
    }
}