/* PC 应用商店风格 CSS */
:root {
    --store-bg: #F3F3F3; /* 应用商店经典浅灰背景 */
    --store-card: #FFFFFF;
    --store-primary: #0067C0; /* 经典应用商店蓝 */
    --store-primary-hover: #005A9E;
    --store-text: #000000;
    --store-subtext: #505050;
    --store-border: #E6E6E6;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif;
}

body {
    background-color: var(--store-bg);
    color: var(--store-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Store Buttons */
.btn-get-large {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--store-primary);
    color: #fff;
    padding: 10px 40px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.btn-get-large:hover {
    background-color: var(--store-primary-hover);
}

.btn-get-medium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--store-primary);
    color: #fff;
    padding: 8px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.btn-get-medium:hover {
    background-color: var(--store-primary-hover);
}

.btn-get-small {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--store-primary);
    color: #fff;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.btn-get-small:hover {
    background-color: var(--store-primary-hover);
}

.btn-share {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #E6E6E6;
    color: var(--store-text);
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
}

.btn-share:hover {
    background-color: #D4D4D4;
}

/* Navbar */
.store-nav {
    background-color: var(--store-card);
    border-bottom: 1px solid var(--store-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 24px;
    height: 24px;
    background-color: var(--store-primary);
    color: #fff;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: bold;
}

.logo-text {
    font-size: 16px;
    font-weight: 600;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 24px;
}

.nav-menu a {
    font-size: 13px;
    color: var(--store-text);
}

.nav-menu a:hover, .nav-menu a.active {
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-thickness: 2px;
    text-decoration-color: var(--store-primary);
}

/* Hero Section (App Detail Style) */
.store-hero {
    padding: 40px 0;
}

.app-header-card {
    display: flex;
    gap: 32px;
    margin-bottom: 40px;
}

.app-icon-large {
    width: 160px;
    height: 160px;
    background-color: var(--store-primary);
    color: #fff;
    border-radius: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    font-weight: bold;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.app-info-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.app-info-main h1 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 8px;
}

.app-developer {
    font-size: 14px;
    color: var(--store-primary);
    margin-bottom: 12px;
}

.app-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--store-subtext);
    margin-bottom: 16px;
}

.rating {
    color: #000;
    font-weight: 600;
}

.app-desc {
    font-size: 14px;
    color: var(--store-text);
    margin-bottom: 24px;
    max-width: 600px;
}

.app-actions {
    display: flex;
    gap: 12px;
}

/* Preview Section */
.app-preview-section {
    margin-bottom: 40px;
}

.app-preview-section h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.preview-gallery {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 16px;
}

.preview-img {
    height: 400px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--store-border);
    object-fit: cover;
}

/* Data Section */
.store-data {
    margin-bottom: 40px;
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.data-card {
    background-color: var(--store-card);
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.data-num {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 4px;
}

.data-label {
    font-size: 13px;
    color: var(--store-subtext);
}

/* Features */
.store-features {
    margin-bottom: 40px;
}

.section-title {
    margin-bottom: 20px;
}

.section-title h2 {
    font-size: 20px;
    font-weight: 600;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.feature-item {
    background-color: var(--store-card);
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: 16px;
}

.f-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.f-text h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.f-text p {
    font-size: 13px;
    color: var(--store-subtext);
}

/* Solutions */
.store-solutions {
    margin-bottom: 60px;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.solution-card {
    background-color: var(--store-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.solution-card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.s-content {
    padding: 16px;
}

.s-content h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
}

.s-content p {
    font-size: 13px;
    color: var(--store-subtext);
}

/* CTA */
.store-cta {
    margin-bottom: 60px;
}

.cta-box {
    background-color: var(--store-card);
    padding: 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.cta-box h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.cta-box p {
    font-size: 14px;
    color: var(--store-subtext);
    margin-bottom: 24px;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
}

/* Download Page */
.store-page-header {
    padding: 40px 0 20px;
}

.store-page-header h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
}

.store-page-header p {
    font-size: 14px;
    color: var(--store-subtext);
}

.store-download-section {
    padding-bottom: 60px;
}

.download-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.dl-app-card {
    background-color: var(--store-card);
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 24px;
}

.dl-icon-box {
    width: 64px;
    height: 64px;
    background-color: var(--store-bg);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    flex-shrink: 0;
}

.dl-info {
    flex: 1;
}

.dl-info h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.dl-req {
    font-size: 12px;
    color: var(--store-primary);
    margin-bottom: 4px;
}

.dl-desc {
    font-size: 13px;
    color: var(--store-subtext);
}

/* FAQ Section */
.store-faq-section {
    padding-bottom: 60px;
}

.faq-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
}

.faq-card {
    background-color: var(--store-card);
    padding: 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin-bottom: 16px;
}

.faq-card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
}

.faq-card p {
    font-size: 14px;
    color: var(--store-subtext);
}

.sidebar-img {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

/* Footer */
.store-footer {
    background-color: var(--store-card);
    padding: 40px 0 20px;
    border-top: 1px solid var(--store-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    font-size: 13px;
    color: var(--store-subtext);
    margin-bottom: 12px;
}

.footer-col a:hover {
    color: var(--store-primary);
}

.brand-col .logo-text {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    display: block;
}

.brand-col p {
    font-size: 12px;
    color: var(--store-subtext);
}

.footer-bottom {
    border-top: 1px solid var(--store-border);
    padding-top: 20px;
    font-size: 12px;
    color: var(--store-subtext);
}

@media (max-width: 768px) {
    .app-header-card { flex-direction: column; gap: 16px; }
    .app-icon-large { width: 100px; height: 100px; font-size: 48px; border-radius: 20px; }
    .data-grid, .features-grid, .solutions-grid { grid-template-columns: 1fr; }
    .faq-layout { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .nav-menu { display: none; }
}