/* ========== 本地字体加载 ========== */
@font-face {
    font-family: 'Playfair Display';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url(../fonts/playfair-latin.woff2) format('woff2');
}
@font-face {
    font-family: 'Playfair Display';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url(../fonts/playfair-latin.woff2) format('woff2');
}
@font-face {
    font-family: 'Playfair Display';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url(../fonts/playfair-latin.woff2) format('woff2');
}
@font-face {
    font-family: 'Playfair Display';
    font-style: normal;
    font-weight: 800;
    font-display: swap;
    src: url(../fonts/playfair-latin.woff2) format('woff2');
}
@font-face {
    font-family: 'DM Sans';
    font-style: normal;
    font-weight: 300;
    font-display: swap;
    src: url(../fonts/dmsans-latin.woff2) format('woff2');
}
@font-face {
    font-family: 'DM Sans';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url(../fonts/dmsans-latin.woff2) format('woff2');
}
@font-face {
    font-family: 'DM Sans';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url(../fonts/dmsans-latin.woff2) format('woff2');
}
@font-face {
    font-family: 'DM Sans';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url(../fonts/dmsans-latin.woff2) format('woff2');
}
@font-face {
    font-family: 'DM Sans';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url(../fonts/dmsans-latin.woff2) format('woff2');
}

/* ========== 基础重置 ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'DM Sans', system-ui, sans-serif;
    background: #0A0A0A;
    color: #F5F0E8;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ========== Hero 区域 ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem 1rem;
}

/* ★★★ 背景图：替换 url() 里的路径为您自己的背景图 ★★★ */
.hero-bg {
    position: absolute;
    inset: 0;
    background: url(../images/hero-bg.webp) center/cover no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(10,10,10,0.4), rgba(10,10,10,0.2), rgba(10,10,10,1));
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 700px;
}

/* ========== Logo ========== */
.logo {
    width: 96px;
    height: 96px;
    margin: 0 auto 1.5rem;
    animation: float 6s ease-in-out infinite;
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 50%;
    filter: drop-shadow(0 0 20px rgba(201, 168, 76, 0.3));
}

/* ========== Art Deco 装饰线 ========== */
.deco-line {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.deco-line-bar {
    width: 64px;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(201, 168, 76, 0.6));
}

.deco-line-bar:last-child {
    background: linear-gradient(to left, transparent, rgba(201, 168, 76, 0.6));
}

.deco-diamond {
    width: 8px;
    height: 8px;
    border: 1px solid rgba(201, 168, 76, 0.6);
    transform: rotate(45deg);
}

/* ========== 标题 ========== */
.brand-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(3rem, 8vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #C9A84C 0%, #E8D48B 50%, #C9A84C 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.2rem;
    color: #A09880;
    font-weight: 300;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.sub-tagline {
    font-size: 0.8rem;
    color: #8B7332;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    margin-bottom: 2.5rem;
}

/* ========== 信任标识 ========== */
.trust-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #8B7332;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.trust-item svg {
    width: 16px;
    height: 16px;
    color: rgba(201, 168, 76, 0.6);
}

.trust-divider {
    width: 1px;
    height: 16px;
    background: rgba(201, 168, 76, 0.2);
}

/* ========== 滚动提示 ========== */
.scroll-hint {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.scroll-hint span {
    font-size: 10px;
    color: #8B7332;
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

.scroll-hint svg {
    width: 20px;
    height: 20px;
    color: rgba(201, 168, 76, 0.4);
    animation: bounce 2s ease-in-out infinite;
}

/* ========== 下载区域 ========== */
.download-section {
    position: relative;
    padding: 5rem 1rem 4rem;
}

.download-section::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: radial-gradient(circle at 1px 1px, #C9A84C 1px, transparent 0);
    background-size: 40px 40px;
}

.section-inner {
    position: relative;
    z-index: 10;
    max-width: 900px;
    margin: 0 auto;
}

/* ========== 区域标题 ========== */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.section-label-line {
    width: 48px;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(201, 168, 76, 0.4));
}

.section-label-line:last-child {
    background: linear-gradient(to left, transparent, rgba(201, 168, 76, 0.4));
}

.section-label span {
    font-size: 10px;
    color: rgba(201, 168, 76, 0.6);
    letter-spacing: 0.4em;
    text-transform: uppercase;
}

.section-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #C9A84C 0%, #E8D48B 50%, #C9A84C 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    color: #8B7332;
    font-size: 0.875rem;
    max-width: 400px;
    margin: 0 auto;
}

/* ========== 下载卡片网格 ========== */
.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .cards-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* ========== 单张卡片 ========== */
.card {
    position: relative;
    background: rgba(13, 13, 13, 0.8);
    border: 1px solid rgba(201, 168, 76, 0.3);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.4s ease;
    backdrop-filter: blur(8px);
}

.card:hover {
    transform: translateY(-6px);
    border-color: rgba(201, 168, 76, 0.6);
    box-shadow: 0 0 30px rgba(201, 168, 76, 0.15), inset 0 0 20px rgba(201, 168, 76, 0.05);
}

.card-accent {
    height: 2px;
    width: 100%;
    background: linear-gradient(to right, transparent, #C9A84C, transparent);
    opacity: 0.6;
    transition: opacity 0.5s;
}

.card:hover .card-accent {
    opacity: 1;
}

.card-body {
    padding: 1.5rem 2rem 2rem;
}

/* ========== 卡片头部 ========== */
.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.card-header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background: rgba(201, 168, 76, 0.1);
    border: 1px solid rgba(201, 168, 76, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
}

.card:hover .card-icon {
    background: rgba(201, 168, 76, 0.15);
}

.card-icon svg {
    width: 24px;
    height: 24px;
    color: #C9A84C;
}

.card-platform {
    font-size: 0.7rem;
    color: rgba(201, 168, 76, 0.7);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-weight: 500;
}

.card-edition {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: #F5F0E8;
}

.card-badge {
    padding: 0.25rem 0.75rem;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    background: rgba(201, 168, 76, 0.15);
    color: #C9A84C;
    border: 1px solid rgba(201, 168, 76, 0.3);
    border-radius: 999px;
}

/* ========== 卡片描述 ========== */
.card-desc {
    color: #A09880;
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

/* ========== 功能标签 ========== */
.card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.feature-tag {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    color: rgba(201, 168, 76, 0.8);
    background: rgba(201, 168, 76, 0.05);
    border: 1px solid rgba(201, 168, 76, 0.1);
    border-radius: 6px;
}

/* ========== 下载按钮 ========== */
.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: #0A0A0A;
    background: linear-gradient(to right, #C9A84C, #B8972F);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.download-btn:hover {
    background: linear-gradient(to right, #E8D48B, #C9A84C);
    box-shadow: 0 0 30px rgba(201, 168, 76, 0.3);
}

.download-btn:active {
    transform: scale(0.98);
}

.download-btn svg {
    width: 16px;
    height: 16px;
}

.download-btn .shimmer {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.15) 50%, transparent 100%);
    background-size: 200% 100%;
    animation: shimmer 3s ease-in-out infinite;
}

/* ========== 底部备注 ========== */
.bottom-note {
    text-align: center;
    margin-top: 3rem;
    font-size: 0.75rem;
    color: rgba(139, 115, 50, 0.6);
}

/* ========== 特性区域 ========== */
.features-strip {
    padding: 4rem 1rem;
    border-top: 1px solid rgba(201, 168, 76, 0.1);
    border-bottom: 1px solid rgba(201, 168, 76, 0.1);
}

.features-grid {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 3rem;
    }
}

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

.feature-icon-wrap {
    width: 40px;
    height: 40px;
    margin: 0 auto 1rem;
    border-radius: 8px;
    background: rgba(201, 168, 76, 0.1);
    border: 1px solid rgba(201, 168, 76, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon-wrap svg {
    width: 20px;
    height: 20px;
    color: rgba(201, 168, 76, 0.7);
}

.feature-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 0.875rem;
    font-weight: 600;
    color: #F5F0E8;
    margin-bottom: 0.5rem;
}

.feature-desc {
    font-size: 0.75rem;
    color: #8B7332;
    line-height: 1.6;
}

/* ========== 页脚 ========== */
footer {
    padding: 3rem 1rem;
    text-align: center;
}

.footer-deco {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.footer-deco-line {
    width: 32px;
    height: 1px;
    background: rgba(201, 168, 76, 0.2);
}

.footer-deco-dot {
    width: 6px;
    height: 6px;
    transform: rotate(45deg);
    background: rgba(201, 168, 76, 0.3);
}

.footer-brand {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #C9A84C 0%, #E8D48B 50%, #C9A84C 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-copy {
    font-size: 0.75rem;
    color: rgba(139, 115, 50, 0.5);
    letter-spacing: 0.05em;
}

/* ========== 动画 ========== */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(6px); }
}

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

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

.delay-1 { animation-delay: 0.1s; opacity: 0; }
.delay-2 { animation-delay: 0.2s; opacity: 0; }
.delay-3 { animation-delay: 0.3s; opacity: 0; }
.delay-4 { animation-delay: 0.4s; opacity: 0; }
.delay-5 { animation-delay: 0.5s; opacity: 0; }
.delay-6 { animation-delay: 0.6s; opacity: 0; }
.delay-7 { animation-delay: 0.7s; opacity: 0; }

/* ========== 金色粒子 ========== */
.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: particleFloat 6s ease-in-out infinite;
}

@keyframes particleFloat {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
    25% { transform: translateY(-20px) translateX(10px); opacity: 0.7; }
    50% { transform: translateY(-10px) translateX(-5px); opacity: 0.5; }
    75% { transform: translateY(-30px) translateX(15px); opacity: 0.8; }
}