/* ==================== Aether Peak 追加样式 ==================== */

/* 滚动进度条 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gold);
    transform: scaleX(0);
    transform-origin: left;
    z-index: 10001;
    pointer-events: none;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: transparent;
    border: 1.5px solid var(--gold);
    color: var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: 998;
    font-size: 1.2rem;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    background: var(--gold);
    color: var(--void);
    box-shadow: 0 0 24px rgba(201, 169, 98, 0.3);
    transform: translateY(-4px);
}

/* 磨砂玻璃导航状态 */
.navbar.glass {
    background: rgba(5, 10, 20, 0.85);
    backdrop-filter: blur(20px) saturate(1.2);
    -webkit-backdrop-filter: blur(20px) saturate(1.2);
    border-bottom: 1px solid rgba(201, 169, 98, 0.1);
}

/* GSAP 初始状态（防止闪烁） */
[data-animate="fade-up"] {
    opacity: 0;
    transform: translateY(40px);
}
[data-animate="fade-left"] {
    opacity: 0;
    transform: translateX(-40px);
}
[data-animate="fade-right"] {
    opacity: 0;
    transform: translateX(40px);
}
[data-animate="scale-in"] {
    opacity: 0;
    transform: scale(0.9);
}

/* 减弱动画 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    [data-animate] {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* 联系表单升级 */
.form-group input,
.form-group textarea {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(201, 169, 98, 0.15);
    color: var(--frost);
    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--gold);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
    outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(232, 236, 242, 0.35);
}
.form-group label {
    color: rgba(232, 236, 242, 0.6);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

/* 合作伙伴 logo 墙升级 */
.partner-logo {
    filter: grayscale(100%) brightness(0.9);
    opacity: 0.6;
    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.partner-logo:hover {
    filter: grayscale(0%) brightness(1);
    opacity: 1;
    transform: scale(1.05);
}

/* 产品卡片微升级 */
.product-card {
    position: relative;
    z-index: 1;
}
.product-card .card-img img {
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.product-card:hover .card-img img {
    transform: scale(1.03) translateY(-8px);
}

/* 新闻区标题升级 */
.news-section-title {
    font-family: var(--font-display-zh);
    letter-spacing: 0.06em;
}

/* 金色高亮下划线 */
.gold-underline {
    position: relative;
    display: inline;
}
.gold-underline::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--gold);
    opacity: 0.6;
}

/* 优雅的 section 标签 */
.section-eyebrow {
    font-family: var(--font-label);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 16px;
    display: block;
}

/* 巨型背景水印文字（scrub 排版） */
.watermark-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-display-en);
    font-size: clamp(6rem, 14vw, 12rem);
    font-weight: 300;
    color: rgba(26, 43, 74, 0.04);
    white-space: nowrap;
    pointer-events: none;
    user-select: none;
    z-index: 0;
    letter-spacing: 0.1em;
}
.section.products .watermark-text {
    color: rgba(26, 43, 74, 0.04);
}

/* 光标光晕 */
.cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(201, 169, 98, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 99997;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
}

/* 响应式增强 */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
    .hero-title {
        font-size: clamp(1.6rem, 6vw, 2.5rem);
    }
}