/* ============================================
   糖心vlog - 原创样式表
   品牌定位：国内影视传媒公司+视频社区
   域名：83635.cn
   ============================================ */

/* CSS Variables */
:root {
    --tx-pink: #FF6B9D;
    --tx-deep-rose: #C44569;
    --tx-gold: #F8B500;
    --tx-light-bg: #FFF5F7;
    --tx-dark-bg: #1A1A2E;
    --tx-text: #2D2D3A;
    --tx-text-light: #6B6B80;
    --tx-white: #FFFFFF;
    --tx-gradient: linear-gradient(135deg, #FF6B9D 0%, #C44569 50%, #F8B500 100%);
    --tx-gradient-soft: linear-gradient(135deg, #FFF5F7 0%, #FFE8F0 100%);
    --tx-shadow: 0 4px 20px rgba(255, 107, 157, 0.15);
    --tx-shadow-hover: 0 8px 30px rgba(255, 107, 157, 0.25);
    --tx-radius: 12px;
    --tx-radius-lg: 20px;
    --tx-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    color: var(--tx-text);
    background: var(--tx-light-bg);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    color: var(--tx-pink);
    text-decoration: none;
    transition: var(--tx-transition);
}

a:hover {
    color: var(--tx-deep-rose);
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--tx-text);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   Header & Navigation
   ============================================ */
.tx-header {
    background: var(--tx-white);
    box-shadow: 0 2px 15px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--tx-transition);
}

.tx-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.tx-logo img {
    height: 42px;
    width: auto;
}

.tx-logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    background: var(--tx-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tx-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.tx-nav a {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--tx-text);
    transition: var(--tx-transition);
    white-space: nowrap;
}

.tx-nav a:hover,
.tx-nav a.active {
    background: var(--tx-gradient);
    color: var(--tx-white);
    -webkit-text-fill-color: var(--tx-white);
}

.tx-mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--tx-text);
    cursor: pointer;
    padding: 8px;
}

/* Search Bar */
.tx-search-bar {
    background: var(--tx-gradient-soft);
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,107,157,0.1);
}

.tx-search-inner {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    gap: 10px;
    padding: 0 20px;
}

.tx-search-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid rgba(255,107,157,0.2);
    border-radius: 50px;
    font-size: 0.95rem;
    outline: none;
    transition: var(--tx-transition);
    background: var(--tx-white);
}

.tx-search-input:focus {
    border-color: var(--tx-pink);
    box-shadow: 0 0 0 4px rgba(255,107,157,0.1);
}

.tx-search-btn {
    padding: 12px 28px;
    background: var(--tx-gradient);
    color: var(--tx-white);
    border: none;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--tx-transition);
    white-space: nowrap;
}

.tx-search-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--tx-shadow-hover);
}

/* ============================================
   Hero Banner
   ============================================ */
.tx-hero {
    position: relative;
    overflow: hidden;
    background: var(--tx-dark-bg);
    min-height: 520px;
    display: flex;
    align-items: center;
}

.tx-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.tx-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.5;
}

.tx-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26,26,46,0.85) 0%, rgba(196,69,105,0.4) 100%);
    z-index: 2;
}

.tx-hero-content {
    position: relative;
    z-index: 3;
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
    color: var(--tx-white);
}

.tx-hero h1 {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--tx-white);
    margin-bottom: 16px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.tx-hero h1 span {
    background: var(--tx-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tx-hero p {
    font-size: 1.15rem;
    max-width: 600px;
    margin-bottom: 30px;
    opacity: 0.9;
    line-height: 1.8;
}

.tx-hero-btns {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.tx-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--tx-transition);
    border: none;
    text-decoration: none;
}

.tx-btn-primary {
    background: var(--tx-gradient);
    color: var(--tx-white);
    box-shadow: 0 4px 15px rgba(255,107,157,0.4);
}

.tx-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255,107,157,0.5);
    color: var(--tx-white);
}

.tx-btn-outline {
    background: transparent;
    color: var(--tx-white);
    border: 2px solid rgba(255,255,255,0.5);
}

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

/* ============================================
   Section Common
   ============================================ */
.tx-section {
    padding: 70px 0;
}

.tx-section-dark {
    background: var(--tx-dark-bg);
    color: var(--tx-white);
}

.tx-section-dark h2,
.tx-section-dark h3,
.tx-section-dark h4 {
    color: var(--tx-white);
}

.tx-section-alt {
    background: var(--tx-white);
}

.tx-section-title {
    text-align: center;
    margin-bottom: 50px;
}

.tx-section-title h2 {
    font-size: 2rem;
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.tx-section-title h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--tx-gradient);
    border-radius: 2px;
}

.tx-section-title p {
    color: var(--tx-text-light);
    font-size: 1.05rem;
    margin-top: 16px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.tx-section-dark .tx-section-title p {
    color: rgba(255,255,255,0.7);
}

/* ============================================
   Video Cards
   ============================================ */
.tx-video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.tx-video-card {
    background: var(--tx-white);
    border-radius: var(--tx-radius);
    overflow: hidden;
    box-shadow: var(--tx-shadow);
    transition: var(--tx-transition);
    cursor: pointer;
}

.tx-video-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--tx-shadow-hover);
}

.tx-video-thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

.tx-video-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--tx-transition);
}

.tx-video-card:hover .tx-video-thumb img {
    transform: scale(1.05);
}

.tx-video-play {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(26,26,46,0.4);
    opacity: 0;
    transition: var(--tx-transition);
}

.tx-video-card:hover .tx-video-play {
    opacity: 1;
}

.tx-video-play-icon {
    width: 56px;
    height: 56px;
    background: var(--tx-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(255,107,157,0.5);
    transition: var(--tx-transition);
}

.tx-video-play-icon::after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 18px;
    border-color: transparent transparent transparent white;
    margin-left: 4px;
}

.tx-video-card:hover .tx-video-play-icon {
    transform: scale(1.1);
}

.tx-video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0,0,0,0.75);
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.tx-video-info {
    padding: 16px;
}

.tx-video-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.tx-video-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.82rem;
    color: var(--tx-text-light);
}

.tx-video-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.tx-video-tag {
    display: inline-block;
    padding: 2px 10px;
    background: var(--tx-gradient-soft);
    color: var(--tx-pink);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 8px;
}

/* ============================================
   Feature Modules
   ============================================ */
.tx-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.tx-feature-card {
    background: var(--tx-white);
    border-radius: var(--tx-radius-lg);
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--tx-shadow);
    transition: var(--tx-transition);
    border: 1px solid rgba(255,107,157,0.08);
}

.tx-feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--tx-shadow-hover);
    border-color: rgba(255,107,157,0.2);
}

.tx-feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: var(--tx-gradient-soft);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.tx-feature-card h4 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.tx-feature-card p {
    color: var(--tx-text-light);
    font-size: 0.92rem;
    line-height: 1.7;
}

/* ============================================
   Expert Section
   ============================================ */
.tx-experts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.tx-expert-card {
    background: var(--tx-white);
    border-radius: var(--tx-radius-lg);
    padding: 32px 20px;
    text-align: center;
    box-shadow: var(--tx-shadow);
    transition: var(--tx-transition);
}

.tx-expert-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--tx-shadow-hover);
}

.tx-expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 16px;
    overflow: hidden;
    border: 3px solid var(--tx-pink);
    padding: 3px;
}

.tx-expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.tx-expert-card h4 {
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.tx-expert-role {
    color: var(--tx-pink);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.tx-expert-desc {
    color: var(--tx-text-light);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 14px;
}

.tx-expert-btns {
    display: flex;
    gap: 8px;
    justify-content: center;
}

.tx-btn-sm {
    padding: 6px 16px;
    font-size: 0.8rem;
    border-radius: 20px;
}

/* ============================================
   Brand Wall
   ============================================ */
.tx-brand-wall {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    align-items: center;
}

.tx-brand-item {
    width: 140px;
    height: 60px;
    background: var(--tx-white);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    font-weight: 700;
    color: var(--tx-text-light);
    font-size: 0.9rem;
    transition: var(--tx-transition);
}

.tx-brand-item:hover {
    box-shadow: var(--tx-shadow);
    color: var(--tx-pink);
}

/* ============================================
   Reviews
   ============================================ */
.tx-reviews-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.tx-review-card {
    background: var(--tx-white);
    border-radius: var(--tx-radius);
    padding: 28px;
    box-shadow: var(--tx-shadow);
    transition: var(--tx-transition);
}

.tx-review-card:hover {
    box-shadow: var(--tx-shadow-hover);
}

.tx-review-stars {
    color: var(--tx-gold);
    font-size: 1rem;
    margin-bottom: 12px;
    letter-spacing: 2px;
}

.tx-review-text {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--tx-text);
    margin-bottom: 16px;
    font-style: italic;
}

.tx-review-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tx-review-author-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--tx-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1rem;
}

.tx-review-author-info h5 {
    font-size: 0.9rem;
    font-weight: 600;
}

.tx-review-author-info span {
    font-size: 0.8rem;
    color: var(--tx-text-light);
}

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

.tx-faq-item {
    background: var(--tx-white);
    border-radius: var(--tx-radius);
    margin-bottom: 14px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    overflow: hidden;
    border: 1px solid rgba(255,107,157,0.08);
}

.tx-faq-question {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--tx-transition);
}

.tx-faq-question:hover {
    color: var(--tx-pink);
}

.tx-faq-question::after {
    content: '+';
    font-size: 1.4rem;
    font-weight: 300;
    color: var(--tx-pink);
    transition: var(--tx-transition);
}

.tx-faq-item.active .tx-faq-question::after {
    content: '−';
}

.tx-faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    color: var(--tx-text-light);
    font-size: 0.95rem;
    line-height: 1.8;
}

.tx-faq-item.active .tx-faq-answer {
    padding: 0 24px 20px;
    max-height: 300px;
}

/* ============================================
   Contact Section
   ============================================ */
.tx-contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    align-items: start;
}

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

.tx-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px;
    background: var(--tx-white);
    border-radius: var(--tx-radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.tx-contact-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: var(--tx-gradient-soft);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.tx-contact-item h5 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.tx-contact-item p {
    font-size: 0.88rem;
    color: var(--tx-text-light);
}

.tx-contact-qr {
    display: flex;
    gap: 24px;
    justify-content: center;
}

.tx-qr-item {
    text-align: center;
}

.tx-qr-item img {
    width: 160px;
    height: auto;
    border-radius: var(--tx-radius);
    box-shadow: var(--tx-shadow);
    margin-bottom: 10px;
}

.tx-qr-item p {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--tx-text);
}

/* ============================================
   How-To Guide
   ============================================ */
.tx-howto-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: step;
}

.tx-howto-step {
    text-align: center;
    padding: 28px 20px;
    background: var(--tx-white);
    border-radius: var(--tx-radius-lg);
    box-shadow: var(--tx-shadow);
    position: relative;
    counter-increment: step;
}

.tx-howto-step::before {
    content: counter(step);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--tx-gradient);
    color: white;
    font-size: 1.3rem;
    font-weight: 800;
    border-radius: 50%;
    margin: 0 auto 16px;
}

.tx-howto-step h4 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.tx-howto-step p {
    font-size: 0.88rem;
    color: var(--tx-text-light);
    line-height: 1.6;
}

/* ============================================
   Social Share
   ============================================ */
.tx-share-bar {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.tx-share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--tx-white);
    transition: var(--tx-transition);
    cursor: pointer;
    border: none;
}

.tx-share-btn:hover {
    transform: translateY(-2px);
    color: var(--tx-white);
}

.tx-share-wechat { background: #07C160; }
.tx-share-weibo { background: #E6162D; }
.tx-share-douyin { background: #161823; }
.tx-share-bilibili { background: #00A1D6; }

/* ============================================
   Footer
   ============================================ */
.tx-footer {
    background: var(--tx-dark-bg);
    color: rgba(255,255,255,0.7);
    padding: 50px 0 0;
}

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

.tx-footer-brand h3 {
    color: var(--tx-white);
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.tx-footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.tx-footer h4 {
    color: var(--tx-white);
    font-size: 1rem;
    margin-bottom: 16px;
}

.tx-footer-links {
    list-style: none;
}

.tx-footer-links li {
    margin-bottom: 10px;
}

.tx-footer-links a {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    transition: var(--tx-transition);
}

.tx-footer-links a:hover {
    color: var(--tx-pink);
    padding-left: 4px;
}

.tx-footer-bottom {
    padding: 20px 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}

.tx-footer-bottom a {
    color: var(--tx-pink);
}

/* ============================================
   Breadcrumb
   ============================================ */
.tx-breadcrumb {
    padding: 16px 0;
    font-size: 0.88rem;
    color: var(--tx-text-light);
}

.tx-breadcrumb a {
    color: var(--tx-text-light);
}

.tx-breadcrumb a:hover {
    color: var(--tx-pink);
}

.tx-breadcrumb span {
    margin: 0 8px;
    color: #ccc;
}

/* ============================================
   Tags
   ============================================ */
.tx-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.tx-tag {
    display: inline-block;
    padding: 5px 14px;
    background: var(--tx-gradient-soft);
    color: var(--tx-pink);
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 500;
    transition: var(--tx-transition);
}

.tx-tag:hover {
    background: var(--tx-pink);
    color: var(--tx-white);
}

/* ============================================
   Page Content (Inner Pages)
   ============================================ */
.tx-page-hero {
    background: var(--tx-gradient);
    padding: 50px 0;
    text-align: center;
    color: var(--tx-white);
}

.tx-page-hero h1 {
    font-size: 2.2rem;
    color: var(--tx-white);
    margin-bottom: 10px;
}

.tx-page-hero p {
    font-size: 1.05rem;
    opacity: 0.9;
}

.tx-page-content {
    padding: 50px 0;
}

/* ============================================
   Lazy Load
   ============================================ */
.tx-lazy {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.tx-lazy.loaded {
    opacity: 1;
}

/* ============================================
   Animations
   ============================================ */
.tx-fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   Community Cards
   ============================================ */
.tx-community-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.tx-community-card {
    background: var(--tx-white);
    border-radius: var(--tx-radius-lg);
    overflow: hidden;
    box-shadow: var(--tx-shadow);
    transition: var(--tx-transition);
}

.tx-community-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--tx-shadow-hover);
}

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

.tx-community-card-body {
    padding: 20px;
}

.tx-community-card h4 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.tx-community-card p {
    font-size: 0.9rem;
    color: var(--tx-text-light);
    line-height: 1.6;
}

/* ============================================
   AI Feature Section
   ============================================ */
.tx-ai-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.tx-ai-image {
    border-radius: var(--tx-radius-lg);
    overflow: hidden;
    box-shadow: var(--tx-shadow-hover);
}

.tx-ai-content h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.tx-ai-content p {
    font-size: 0.95rem;
    color: var(--tx-text-light);
    line-height: 1.8;
    margin-bottom: 12px;
}

.tx-ai-list {
    list-style: none;
    margin-top: 16px;
}

.tx-ai-list li {
    padding: 8px 0;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tx-ai-list li::before {
    content: '✦';
    color: var(--tx-pink);
    font-size: 0.8rem;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .tx-video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .tx-experts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .tx-footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tx-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--tx-white);
        flex-direction: column;
        padding: 16px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        gap: 4px;
    }
    .tx-nav.open {
        display: flex;
    }
    .tx-nav a {
        width: 100%;
        text-align: center;
        padding: 12px;
    }
    .tx-mobile-toggle {
        display: block;
    }
    .tx-hero h1 {
        font-size: 1.8rem;
    }
    .tx-hero {
        min-height: 400px;
    }
    .tx-video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .tx-features-grid {
        grid-template-columns: 1fr;
    }
    .tx-experts-grid {
        grid-template-columns: 1fr;
    }
    .tx-reviews-grid {
        grid-template-columns: 1fr;
    }
    .tx-contact-grid {
        grid-template-columns: 1fr;
    }
    .tx-howto-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    .tx-ai-grid {
        grid-template-columns: 1fr;
    }
    .tx-footer-grid {
        grid-template-columns: 1fr;
    }
    .tx-section {
        padding: 50px 0;
    }
    .tx-section-title h2 {
        font-size: 1.6rem;
    }
    .tx-community-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .tx-video-grid {
        grid-template-columns: 1fr;
    }
    .tx-howto-steps {
        grid-template-columns: 1fr;
    }
    .tx-hero h1 {
        font-size: 1.5rem;
    }
    .tx-hero-btns {
        flex-direction: column;
    }
    .tx-contact-qr {
        flex-direction: column;
        align-items: center;
    }
}

/* ============================================
   Yandex EEAT - 专家凭证徽章
   ============================================ */
.tx-expert-credentials {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 10px 0;
    justify-content: center;
}
.tx-credential-badge {
    display: inline-block;
    padding: 3px 10px;
    background: var(--tx-gradient-soft);
    color: var(--tx-deep-rose);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid rgba(196, 69, 105, 0.15);
}
/* ============================================
   视频发布日期
   ============================================ */
.tx-video-date {
    display: block;
    font-size: 0.75rem;
    color: var(--tx-text-light);
    margin-top: 6px;
}
/* ============================================
   评论日期
   ============================================ */
.tx-review-date {
    display: block;
    font-size: 0.75rem;
    color: var(--tx-text-light);
    margin-top: 10px;
    text-align: right;
}
/* ============================================
   隐私/条款页面更新通知
   ============================================ */
.tx-update-notice {
    padding: 12px 20px;
    background: var(--tx-gradient-soft);
    border-left: 4px solid var(--tx-pink);
    border-radius: 0 var(--tx-radius) var(--tx-radius) 0;
    margin-bottom: 30px;
    font-size: 0.9rem;
    color: var(--tx-text-light);
}
/* ============================================
   页面内容样式增强
   ============================================ */
.tx-page-content h1 {
    font-size: 2rem;
    color: var(--tx-text);
    margin-bottom: 20px;
    background: var(--tx-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.tx-page-content h2 {
    font-size: 1.5rem;
    color: var(--tx-text);
    margin: 35px 0 15px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--tx-gradient-soft);
}
.tx-page-content h3 {
    font-size: 1.2rem;
    color: var(--tx-text);
    margin: 25px 0 10px;
}
.tx-page-content p {
    margin-bottom: 15px;
    line-height: 1.8;
}
.tx-page-content ul {
    margin: 10px 0 20px 20px;
}
.tx-page-content ul li {
    margin-bottom: 8px;
    line-height: 1.7;
}
/* ============================================
   信任信号样式
   ============================================ */
.tx-footer-trust {
    padding: 15px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin: 20px 0;
    text-align: center;
}
.tx-footer-trust p {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.5);
}
/* ============================================
   面包屑导航增强（Microdata格式）
   ============================================ */
nav.tx-breadcrumb {
    padding: 14px 0;
    font-size: 0.88rem;
    color: var(--tx-text-light);
    background: var(--tx-white);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}
nav.tx-breadcrumb a {
    color: var(--tx-text-light);
}
nav.tx-breadcrumb a:hover {
    color: var(--tx-pink);
}