/* download.css - 下载页（白色基调） */

.download-main {
    background: #fff;
    padding: 60px 0;
    height: 9999px;
}

/* 顶部 */
.dl-header {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 24px;
    padding: 30px;
    background: linear-gradient(135deg, var(--color-primary-soft), #fff);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    margin-bottom: 40px;
    box-shadow: var(--shadow-sm);
}
.dl-logo-area { display: flex; align-items: center; gap: 20px; }
.dl-logo-area img {
    width: 80px; height: 80px;
    border-radius: 16px;
    background: #fff;
    padding: 8px;
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-sm);
}
.dl-title-area h1 {
    font-size: 30px; color: var(--color-primary);
    letter-spacing: 2px; margin-bottom: 4px;
}
.dl-title-area p { font-size: 14px; color: var(--color-text-light); }
.dl-highlight {
    display: flex; gap: 16px; flex-wrap: wrap;
}
.highlight-item {
    display: flex; align-items: center; gap: 6px;
    background: #fff;
    padding: 8px 14px;
    border-radius: 20px;
    border: 1px solid var(--color-border);
    font-size: 13px;
    color: var(--color-text);
    font-weight: 600;
}
.highlight-item i { color: var(--color-accent); }

/* 平台卡片 */
.dl-platform {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.dl-platform:hover { box-shadow: var(--shadow-md); border-color: var(--color-primary); }
.dl-platform.dl-platform-ios { opacity: 0.85; }

.platform-header {
    display: flex; align-items: center; gap: 24px;
    padding: 26px 30px;
    flex-wrap: wrap;
}
.platform-icon {
    width: 70px; height: 70px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 36px;
    flex-shrink: 0;
    box-shadow: 0 6px 16px rgba(16,152,173,.3);
}
.platform-info { flex: 1; min-width: 220px; }
.platform-info h2 { font-size: 22px; color: var(--color-text); margin-bottom: 6px; letter-spacing: 1px; }
.platform-info p { font-size: 13px; color: var(--color-text-light); margin-bottom: 10px; }
.platform-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.ptag {
    background: var(--color-bg);
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 12px;
    color: var(--color-text-light);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.ptag i { font-size: 11px; }
.ptag.ptag-primary { background: var(--color-primary-soft); color: var(--color-primary); }
.ptag.ptag-warn { background: rgba(255,140,66,.15); color: var(--color-orange); }

.platform-action { text-align: center; }
.dl-btn { min-width: 180px; }
.dl-btn-disabled {
    background: #ccc;
    color: #fff;
    border-color: #aaa;
    cursor: not-allowed;
    opacity: 0.7;
}
.dl-btn-disabled:hover { background: #ccc; transform: none; box-shadow: none; }
.dl-version { margin-top: 8px; font-size: 12px; color: var(--color-text-light); }

/* 配置要求 */
.platform-specs {
    padding: 24px 30px;
    border-top: 1px dashed var(--color-border);
    background: var(--color-bg);
}
.platform-specs h4 {
    font-size: 15px; color: var(--color-secondary); margin-bottom: 16px;
    display: flex; align-items: center; gap: 8px;
}
.platform-specs h4 i { color: var(--color-primary); }
.specs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.spec-col { background: #fff; padding: 18px 20px; border-radius: var(--radius-md); border-left: 3px solid var(--color-primary); }
.spec-col h5 { font-size: 14px; color: var(--color-primary); margin-bottom: 12px; }
.spec-col h5 i { margin-right: 6px; }
.spec-col ul li { font-size: 13px; color: var(--color-text-light); margin-bottom: 8px; line-height: 1.6; }
.spec-col ul li strong { color: var(--color-text); }

.specs-simple { background: #fff; padding: 18px 20px; border-radius: var(--radius-md); border-left: 3px solid #1DB954; }
.spec-row { font-size: 13px; color: var(--color-text); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.spec-row i { color: #1DB954; }

/* 安卓二维码 */
.dl-qrcode-area {
    display: flex; gap: 24px; margin-top: 20px; flex-wrap: wrap;
}
.qrcode-box {
    background: #fff;
    padding: 20px;
    border-radius: var(--radius-md);
    border: 2px dashed var(--color-primary);
    text-align: center;
    width: 160px;
    flex-shrink: 0;
}
.qr-placeholder {
    width: 110px; height: 110px;
    margin: 0 auto 8px;
    background: linear-gradient(135deg, var(--color-primary-soft), #fff);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: var(--color-primary);
}
.qr-placeholder i { font-size: 38px; margin-bottom: 4px; }
.qr-placeholder span { font-size: 12px; font-weight: 600; }
.qr-desc { font-size: 12px; color: var(--color-text-light); }
.android-tips { flex: 1; min-width: 240px; background: #fff; padding: 18px 20px; border-radius: var(--radius-md); border-left: 3px solid var(--color-orange); }
.android-tips p { font-size: 14px; color: var(--color-text); margin-bottom: 8px; }
.android-tips p i { color: var(--color-orange); margin-right: 6px; }
.android-tips ul li { font-size: 12px; color: var(--color-text-light); padding-left: 16px; position: relative; margin-bottom: 6px; line-height: 1.6; }
.android-tips ul li::before { content: "•"; position: absolute; left: 4px; color: var(--color-primary); }

/* 下载说明 */
.dl-instructions {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-dark));
    color: #fff;
    padding: 36px 30px;
    border-radius: var(--radius-lg);
    margin: 40px 0;
}
.dl-instructions h3 { font-size: 22px; margin-bottom: 24px; letter-spacing: 1px; }
.dl-instructions h3 i { color: var(--color-primary-light); margin-right: 8px; }
.instructions-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.instruction-item {
    background: rgba(255,255,255,.08);
    padding: 20px;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary-light);
    transition: var(--transition);
}
.instruction-item:hover {
    background: rgba(255,255,255,.12);
    transform: translateY(-3px);
    border-left-color: var(--color-orange);
}
.ins-icon {
    width: 44px; height: 44px;
    border-radius: 10px;
    background: var(--color-primary);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    margin-bottom: 12px;
}
.instruction-item h4 { font-size: 15px; margin-bottom: 8px; }
.instruction-item p { font-size: 12px; opacity: 0.85; line-height: 1.7; }

/* 截图展示 */
.dl-screenshots h3 {
    font-size: 22px;
    color: var(--color-primary);
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.dl-screenshots h3 i { margin-right: 8px; }
.dl-screen-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.dl-screen-grid img {
    width: 100%; height: 140px; object-fit: cover;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    cursor: pointer;
}
.dl-screen-grid img:hover {
    transform: scale(1.04);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

/* fade */
.fade-up { opacity: 0; transform: translateY(20px); transition: all .6s ease; }
.fade-up.in-view { opacity: 1; transform: translateY(0); }

/* 响应式 */
@media (max-width: 900px) {
    .dl-header { flex-direction: column; align-items: flex-start; }
    .platform-header { flex-direction: column; align-items: flex-start; gap: 16px; }
    .platform-action { align-self: stretch; }
    .dl-btn { width: 100%; }
    .specs-grid { grid-template-columns: 1fr; }
    .instructions-grid { grid-template-columns: 1fr 1fr; }
    .dl-screen-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
    .instructions-grid { grid-template-columns: 1fr; }
    .dl-logo-area { flex-direction: column; text-align: center; }
}