/* ========== 基础样式与重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --bg-dark: #0a0a1a;
    --bg-darker: #050510;
    --text-primary: #ffffff;
    --text-secondary: #b0b0c0;
    --text-muted: #707080;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
    background: var(--bg-darker);
    color: var(--text-primary);
    overflow-x: hidden;
    overflow-y: auto;
    min-height: 100vh;
    position: relative;
}

/* ========== 背景效果 ========== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.4;
}

.glow-orb {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    z-index: 0;
    pointer-events: none;
}

.glow-orb-1 {
    background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
    top: -200px;
    left: -200px;
    animation: float-orb-1 20s ease-in-out infinite;
}

.glow-orb-2 {
    background: radial-gradient(circle, var(--accent-color) 0%, transparent 70%);
    bottom: -200px;
    right: -200px;
    animation: float-orb-2 25s ease-in-out infinite;
}

.glow-orb-3 {
    background: radial-gradient(circle, rgba(236, 72, 153, 0.6) 0%, transparent 70%);
    top: 40%;
    left: 80%;
    animation: float-orb-1 22s ease-in-out infinite;
}

@keyframes float-orb-1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(100px, 50px) scale(1.1); }
}

@keyframes float-orb-2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-80px, -60px) scale(1.15); }
}

/* 流光特效动画 */
@keyframes shimmer {
    0% {
        background-position: 0% center;
    }
    100% {
        background-position: 200% center;
    }
}

/* 呼吸动画（备用） */
@keyframes breathe {
    0%, 100% {
        opacity: 1;
        text-shadow: 0 0 10px rgba(102, 126, 234, 0.3);
    }
    50% {
        opacity: 0.85;
        text-shadow: 0 0 20px rgba(102, 126, 234, 0.6), 0 0 30px rgba(102, 126, 234, 0.4);
    }
}

/* ========== 主容器 ========== */
.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 40px;
}

/* ========== 内容卡片容器 ========== */
.content-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    padding: 44px;
    max-width: 900px;
    margin: 0 auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    /* 移除初始隐藏状态，由 GSAP 控制 */
}

/* 卡片间距 */
.content-card + .content-card {
    margin-top: 28px;
}

/* 欢迎卡片 */
.card-welcome {
    padding: 34px 44px;
}

/* 产品卡片 */
.card-product {
    padding: 40px;
}

/* 邀请码卡片 */
.card-code {
    padding: 36px 42px;
}

/* ========== 场景通用样式 ========== */
.scene {
    position: relative;
    margin-bottom: 0;
    opacity: 0;
    transform: translateY(50px);
}

.scene + .scene {
    margin-top: 26px;
}

.scene:last-child {
    margin-bottom: 0;
}

.section-title {
    font-size: 32px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 40px;
    background: linear-gradient(135deg, #ffffff 0%, #b0b0c0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 3px;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

/* ========== 第二卡片：欢迎卡片（重新设计） ========== */
.scene-welcome {
    position: relative;
    padding: 50px 0;
    text-align: center;
}

/* 装饰元素 */
.welcome-ornament {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 60px;
    opacity: 0.3;
}

.welcome-ornament-top {
    top: 0;
    background: radial-gradient(ellipse at center, rgba(102, 126, 234, 0.3) 0%, transparent 70%);
}

.welcome-ornament-bottom {
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(118, 75, 162, 0.3) 0%, transparent 70%);
}

/* 主内容区 */
.welcome-content {
    position: relative;
    z-index: 1;
}

/* 徽章 */
.welcome-badge {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 30px;
}

.badge-text {
    display: inline-block;
    padding: 8px 24px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.15));
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 2px;
    text-align: center;
}

/* 称谓 */
.honorific-top,
.honorific-bottom {
    font-size: 18px;
    color: var(--text-secondary);
    letter-spacing: 3px;
    margin: 15px 0;
    text-align: center;
}

/* 姓名展示区 */
.user-name-showcase {
    margin: 25px 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.name-frame {
    position: relative;
    display: inline-block;
    padding: 30px 60px;
    min-width: 300px;
    text-align: center;
}

/* 框架四角 */
.frame-corner {
    position: absolute;
    width: 25px;
    height: 25px;
    border: 2px solid;
    border-image: linear-gradient(135deg, var(--primary-color), var(--accent-color)) 1;
}

.frame-corner.tl {
    top: 0;
    left: 0;
    border-right: none;
    border-bottom: none;
}

.frame-corner.tr {
    top: 0;
    right: 0;
    border-left: none;
    border-bottom: none;
}

.frame-corner.bl {
    bottom: 0;
    left: 0;
    border-right: none;
    border-top: none;
}

.frame-corner.br {
    bottom: 0;
    right: 0;
    border-left: none;
    border-top: none;
}

/* 姓名 */
.user-name-showcase .user-name {
    font-size: 48px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea, #f093fb, #667eea);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
    letter-spacing: 4px;
    margin: 0;
    padding: 0;
    text-align: center;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

/* 分隔线 */
.welcome-divider {
    width: 120px;
    height: 2px;
    margin: 30px auto;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

/* 欢迎消息 */
.welcome-message {
    margin: 0;
    text-align: center;
}

.message-main {
    display: block;
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: 2px;
    text-align: center;
}

.message-sub {
    display: block;
    font-size: 15px;
    color: var(--text-secondary);
    letter-spacing: 1px;
    text-align: center;
}

/* ========== 第二幕：产品介绍 ========== */
.scene-product {
    text-align: center;
    padding: 35px 0 40px;
}

.logo-showcase {
    margin-bottom: 28px;
}

.logo-container {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 5px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-glow {
    position: absolute;
    inset: -20px;
    background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0.3;
    filter: blur(30px);
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); }
}

.logo-image {
    position: relative;
    width: 90px;
    height: 90px;
    border-radius: 16px;
    object-fit: contain;
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.3);
    animation: float-logo 4s ease-in-out infinite;
}

@keyframes float-logo {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.product-name {
    margin-bottom: 22px;
}

.product-name .product-subtitle {
    display: block;
    font-size: 22px;
    font-weight: 500;
    letter-spacing: 2px;
    color: #b0b0c0;
    margin-bottom: 2px;
}

.product-name .product-title {
    display: block;
    font-size: 42px;
    font-weight: 700;
    letter-spacing: 4px;
    color: #ffffff;
}

.product-description {
    font-size: 18px;
    line-height: 1.7;
    color: var(--text-primary);
    margin: 0 auto 20px;
}

.product-description-line {
    display: block;
    margin-top: 8px;
}

.product-description-line:first-child {
    margin-top: 0;
}

.product-description-sub {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 10px;
}

.slogan-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 20px;
}

.slogan-line {
    width: 55px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.slogan {
    font-size: 22px;
    color: var(--primary-color);
    letter-spacing: 8px;
    font-weight: 400;
}

.product-description {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.9;
    max-width: 650px;
    margin: 0 auto;
    font-weight: 300;
}

/* ========== 第三幕：核心价值 ========== */
.scene-value {
    padding: 30px 0;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 850px;
    margin: 0 auto;
}

.value-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 30px 25px;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.6s;
}

.value-card:hover::before {
    left: 100%;
}

.value-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(102, 126, 234, 0.3);
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.2);
}

.value-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: inline-block;
    transition: transform 0.5s;
}

.value-card:hover .value-icon {
    transform: scale(1.2) rotate(5deg);
}

.value-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.value-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== 第四幕：技术优势 ========== */
.scene-tech {
    padding: 30px 0;
}

.tech-timeline {
    max-width: 650px;
    margin: 0 auto;
    position: relative;
}

.tech-timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-color), transparent);
}

.tech-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    position: relative;
}

.tech-step {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: white;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
    position: relative;
    z-index: 1;
}

.tech-content {
    flex: 1;
    padding-top: 8px;
    text-align: left;
}

.tech-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
    letter-spacing: 0.5px;
    text-align: center;
}

.tech-detail {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
    font-weight: 300;
    text-align: center;
}

/* ========== 第五幕：内测意义 ========== */
.scene-beta {
    padding: 30px 0;
}

.beta-benefits {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    max-width: 750px;
    margin: 0 auto;
}

.benefit-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: all 0.4s;
}

.benefit-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--primary-color);
    transform: translateX(10px);
}

.benefit-badge {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: white;
}

.benefit-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ========== 第三卡片：邀请码与权益（重新设计） ========== */
.scene-code {
    padding: 0;
}

/* 邀请码主区域 */
.code-main-section {
    margin-bottom: 40px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 25px;
}

.header-icon {
    font-size: 32px;
    filter: drop-shadow(0 2px 8px rgba(102, 126, 234, 0.5));
}

.header-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
}

/* 邀请码盒子 */
.code-box {
    position: relative;
    max-width: 550px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
    border: 2px solid rgba(102, 126, 234, 0.2);
    border-radius: 16px;
    padding: 28px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.code-box:hover {
    border-color: rgba(102, 126, 234, 0.4);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

.code-box-inner {
    text-align: center;
}

.code-label {
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 18px;
    text-transform: uppercase;
}

.code-display {
    font-size: 42px;
    font-weight: 700;
    font-family: 'Courier New', Consolas, Monaco, monospace;
    color: #ffffff;
    text-shadow: 
        0 0 20px rgba(102, 126, 234, 0.6),
        0 0 40px rgba(102, 126, 234, 0.3);
    letter-spacing: 8px;
    margin: 20px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 55px;
}

.code-display .code-char {
    display: inline-block;
    min-width: 28px;
    text-align: center;
    animation: codeGlow 2s ease-in-out infinite;
}

@keyframes codeGlow {
    0%, 100% {
        text-shadow: 
            0 0 20px rgba(102, 126, 234, 0.6),
            0 0 40px rgba(102, 126, 234, 0.3);
    }
    50% {
        text-shadow: 
            0 0 30px rgba(102, 126, 234, 0.9),
            0 0 60px rgba(102, 126, 234, 0.5);
    }
}

.code-display.copy-success {
    color: #4ade80;
    text-shadow: 
        0 0 20px rgba(74, 222, 128, 0.8),
        0 0 40px rgba(74, 222, 128, 0.4);
}

.code-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 15px;
}

.hint-icon {
    font-size: 16px;
}

.code-status-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(74, 222, 128, 0.1);
    border: 1px solid rgba(74, 222, 128, 0.3);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    color: #4ade80;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 8px rgba(74, 222, 128, 0.6);
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.2);
    }
}

/* 权益区域 */
.benefits-section {
    margin-bottom: 40px;
}

.section-subtitle {
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 2px;
    margin-bottom: 25px;
    position: relative;
}

.section-subtitle::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.benefit-box {
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

.benefit-box:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(102, 126, 234, 0.3);
    transform: translateY(-4px);
}

.benefit-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.benefit-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.benefit-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* 下载区域 */
.download-section {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
}

.download-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 45px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 50px;
    cursor: pointer;
    overflow: hidden;
    box-shadow: 
        0 8px 24px rgba(102, 126, 234, 0.4),
        0 4px 12px rgba(102, 126, 234, 0.3);
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 
        0 12px 32px rgba(102, 126, 234, 0.5),
        0 6px 16px rgba(102, 126, 234, 0.4);
}

.btn-shine {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: btnShine 3s ease-in-out infinite;
}

@keyframes btnShine {
    0%, 100% {
        opacity: 0;
        transform: translateX(-100%) skewX(-15deg);
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateX(100%) skewX(-15deg);
    }
}

.btn-text {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    color: white;
    letter-spacing: 0.5px;
}

.btn-icon {
    font-size: 20px;
    transition: transform 0.3s;
}

.download-btn:hover .btn-icon {
    transform: translateY(3px);
}

.download-info {
    margin-top: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-muted);
}

.info-divider {
    opacity: 0.5;
}

/* ========== 第七幕：行动号召 ========== */
.scene-action {
    padding: 40px 0;
    text-align: center;
}

.action-container {
    max-width: 520px;
    margin: 0 auto;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 44px;
    font-size: 18px;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.4);
    position: relative;
    overflow: hidden;
}

.btn-download::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-download:hover::before {
    width: 300px;
    height: 300px;
}

.btn-download:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 60px rgba(102, 126, 234, 0.6);
}

.btn-icon {
    font-size: 24px;
    transition: transform 0.3s;
}

.btn-download:hover .btn-icon {
    transform: translateY(3px);
}

.btn-text {
    position: relative;
    z-index: 1;
}

.system-info {
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 13px;
    color: var(--text-secondary);
}

.info-divider {
    color: var(--text-muted);
}

.info-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ========== 底部 ========== */
.scene-footer {
    padding: 40px 0 30px;
    text-align: center;
}

.footer-divider {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    margin: 0 auto 30px;
}

.footer-content {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-bottom: 18px;
}

.footer-item {
    text-align: center;
}

.footer-label {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 3px;
    margin-bottom: 10px;
    text-transform: uppercase;
    font-weight: 500;
}

.footer-value {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 400;
}

.copyright {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 300;
    opacity: 0.8;
    margin-bottom: 25px;
}

/* 公司Logo */
.company-logo {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-img {
    max-width: 180px;
    height: auto;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.logo-img:hover {
    opacity: 1;
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .container {
        padding: 30px 15px;
    }

    .content-card {
        padding: 30px 20px;
        border-radius: 20px;
    }

    .scene {
        margin-bottom: 40px;
    }

    .core-features {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 15px !important;
    }

    .feature-badge-item {
        padding: 15px !important;
    }

    .user-name-large {
        font-size: 36px;
    }

    .honorific {
        font-size: 20px;
    }

    .user-name {
        font-size: 42px;
        letter-spacing: 4px;
    }

    .product-name {
        font-size: 32px;
    }

    .slogan {
        font-size: 18px;
        letter-spacing: 6px;
    }

    .section-title {
        font-size: 26px;
        margin-bottom: 30px;
    }

    .value-grid,
    .beta-benefits {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .tech-timeline::before {
        left: 20px;
    }

    .tech-step {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
    }

    .invitation-code {
        font-size: 28px;
        letter-spacing: 3px;
    }

    .btn-download {
        padding: 16px 40px;
        font-size: 16px;
    }
}