/* ============================================
   AIPASSION v2 - 像素风格 · 黑白简约
   ============================================ */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-black: #0a0a0a;
    --color-dark: #1a1a1a;
    --color-gray-dark: #2a2a2a;
    --color-gray: #444444;
    --color-gray-light: #666666;
    --color-gray-lighter: #888888;
    --color-gray-pale: #aaaaaa;
    --color-gray-bg: #e8e8e8;
    --color-white: #ffffff;
    --border-pixel: 2px solid var(--color-black);
    --font-main: 'Courier New', 'PingFang SC', 'Microsoft YaHei', monospace;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 22px;
    --font-size-2xl: 28px;
    --font-size-3xl: 36px;
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --max-width: 900px;
    --nav-height: 60px;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-main);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-black);
    background-color: var(--color-white);
    min-height: 100vh;
    background-image:
        linear-gradient(var(--color-gray-bg) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-gray-bg) 1px, transparent 1px);
    background-size: 20px 20px;
}

/* 文章页白色卡片模块 */
.article-card {
    position: relative;
    background: var(--color-white);
    border: var(--border-pixel);
    box-shadow: 6px 6px 0 var(--color-black);
    padding: var(--space-2xl);
    margin-top: var(--space-2xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 科技风图标装饰 */
.article-card::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--color-white);
    padding: 4px;
    line-height: 1;
    /* 科技感SVG图标: 电路节点风格 */
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Ccircle cx='16' cy='16' r='6' fill='none' stroke='%230a0a0a' stroke-width='2'/%3E%3Ccircle cx='16' cy='16' r='2' fill='%230a0a0a'/%3E%3Cline x1='16' y1='2' x2='16' y2='8' stroke='%230a0a0a' stroke-width='2'/%3E%3Cline x1='16' y1='24' x2='16' y2='30' stroke='%230a0a0a' stroke-width='2'/%3E%3Cline x1='2' y1='16' x2='8' y2='16' stroke='%230a0a0a' stroke-width='2'/%3E%3Cline x1='24' y1='16' x2='30' y2='16' stroke='%230a0a0a' stroke-width='2'/%3E%3Cline x1='6' y1='6' x2='10' y2='10' stroke='%230a0a0a' stroke-width='1.5'/%3E%3Cline x1='22' y1='22' x2='26' y2='26' stroke='%230a0a0a' stroke-width='1.5'/%3E%3Cline x1='26' y1='6' x2='22' y2='10' stroke='%230a0a0a' stroke-width='1.5'/%3E%3Cline x1='10' y1='22' x2='6' y2='26' stroke='%230a0a0a' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-size: contain;
}

.nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-black);
    border-bottom: var(--border-pixel);
    height: var(--nav-height);
    box-shadow: 4px 4px 0 var(--color-gray);
}

.nav__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: var(--color-white);
    text-decoration: none;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: var(--space-xs) var(--space-sm);
    border: 2px solid var(--color-white);
    background: var(--color-dark);
}

.nav__logo:hover {
    background: var(--color-gray);
}

.nav__menu {
    display: flex;
    gap: var(--space-xs);
    list-style: none;
}

.nav__link {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--color-gray-pale);
    text-decoration: none;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid transparent;
    transition: all 0.1s;
}

.nav__link:hover, .nav__link.active {
    color: var(--color-white);
    background: var(--color-gray-dark);
}

.nav__link.active {
    background: var(--color-white);
    color: var(--color-black);
    border-color: var(--color-white);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-sm);
    background: none;
    border: 2px solid var(--color-gray);
    cursor: pointer;
}

.nav__toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-white);
}

@media (max-width: 768px) {
    .nav__toggle { display: flex; }
    .nav__menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-black);
        flex-direction: column;
        padding: var(--space-md);
        border-bottom: var(--border-pixel);
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.2s;
        pointer-events: none;
    }
    .nav__menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    .nav__link { padding: var(--space-md); border: 2px solid var(--color-gray-dark); }
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--space-md);
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: var(--border-pixel);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.page-title::before { content: '▶'; font-size: var(--font-size-sm); }

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.card {
    background: var(--color-white);
    border: var(--border-pixel);
    padding: var(--space-lg);
    box-shadow: 4px 4px 0 var(--color-black);
    transition: all 0.1s;
}

.card:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--color-gray);
}

.card__title {
    font-size: var(--font-size-lg);
    font-weight: bold;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px dashed var(--color-gray-bg);
}

.card__desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-light);
    line-height: 1.7;
}

.btn {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-main);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    border: var(--border-pixel);
    background: var(--color-white);
    color: var(--color-black);
    cursor: pointer;
    text-decoration: none;
    box-shadow: 3px 3px 0 var(--color-black);
    transition: all 0.05s;
}

.btn:hover {
    background: var(--color-black);
    color: var(--color-white);
}

.loading {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-gray);
}

.loading::before {
    content: '■ ■ ■';
    display: block;
    font-size: var(--font-size-xl);
    animation: pixel-loading 0.5s infinite;
    margin-bottom: var(--space-md);
}

@keyframes pixel-loading {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.empty {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-gray-light);
    border: 2px dashed var(--color-gray-bg);
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.news-item {
    background: var(--color-white);
    border: var(--border-pixel);
    padding: var(--space-lg);
    box-shadow: 4px 4px 0 var(--color-black);
    cursor: pointer;
    transition: all 0.1s;
}

.news-item:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--color-gray);
}

.news-item__title {
    font-size: var(--font-size-lg);
    font-weight: bold;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.news-item__rank {
    color: var(--color-gray-pale);
    font-size: var(--font-size-xs);
    flex-shrink: 0;
}

.news-item__content {
    font-size: var(--font-size-sm);
    color: var(--color-gray-light);
    line-height: 1.7;
    margin-top: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-item__meta {
    margin-top: var(--space-md);
    font-size: var(--font-size-xs);
    color: var(--color-gray-lighter);
    display: flex;
    gap: var(--space-lg);
}

.news-item--link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
}

.product-item {
    background: var(--color-white);
    border: var(--border-pixel);
    padding: var(--space-md);
    box-shadow: 4px 4px 0 var(--color-black);
    text-align: center;
    transition: all 0.1s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.product-item:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--color-gray);
}

.product-item__name {
    font-weight: bold;
    margin-top: var(--space-sm);
    font-size: var(--font-size-sm);
}

.product-item__category {
    font-size: var(--font-size-xs);
    color: var(--color-gray-lighter);
    margin-top: var(--space-xs);
}

.forum-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.forum-item {
    background: var(--color-white);
    border: var(--border-pixel);
    padding: var(--space-md);
    box-shadow: 3px 3px 0 var(--color-black);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
    color: inherit;
    transition: all 0.1s;
}

.forum-item:hover {
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0 var(--color-gray);
}

.forum-item__title {
    font-weight: bold;
    font-size: var(--font-size-sm);
}

.forum-item__replies {
    font-size: var(--font-size-xs);
    color: var(--color-gray-lighter);
    flex-shrink: 0;
}

.rating {
    display: flex;
    gap: 2px;
}

.rating__star {
    display: inline-block;
    width: 12px;
    height: 12px;
    background: var(--color-black);
    clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}

.rating__star--empty { background: var(--color-gray-pale); }

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
}

.modal.active { display: flex; }

.modal__content {
    background: var(--color-white);
    border: var(--border-pixel);
    padding: var(--space-xl);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 8px 8px 0 var(--color-gray);
}

.modal__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: var(--border-pixel);
}

.modal__title {
    font-size: var(--font-size-xl);
    font-weight: bold;
}

.modal__close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--color-gray);
    line-height: 1;
}

.modal__close:hover { color: var(--color-black); }

.modal__meta {
    font-size: var(--font-size-xs);
    color: var(--color-gray-lighter);
    margin-bottom: var(--space-lg);
}

.modal__body {
    font-size: var(--font-size-sm);
    line-height: 1.8;
    white-space: pre-wrap;
}

.footer {
    margin-top: var(--space-2xl);
    padding: var(--space-xl) var(--space-md);
    background: var(--color-black);
    color: var(--color-gray-pale);
    text-align: center;
    border-top: var(--border-pixel);
    font-size: var(--font-size-xs);
    letter-spacing: 1px;
}

.footer__inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.game-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.game-item {
    background: var(--color-white);
    border: var(--border-pixel);
    padding: var(--space-lg);
    box-shadow: 4px 4px 0 var(--color-black);
    text-decoration: none;
    color: inherit;
    transition: all 0.1s;
    text-align: center;
}

.game-item:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--color-gray);
}

.game-item__title {
    font-weight: bold;
    font-size: var(--font-size-base);
    margin-bottom: var(--space-sm);
}

.game-item__desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-light);
}

img { max-width: 100%; height: auto; display: block; }

/* 文章页表格 - 纯黑像素边框 */
.article-page table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-lg) 0;
    font-size: var(--font-size-sm);
}
.article-page table th {
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    font-weight: bold;
    border: 2px solid var(--color-black);
}
.article-page table td {
    padding: var(--space-sm) var(--space-md);
    border: 2px solid var(--color-black);
    background: var(--color-white);
}
.article-page table tr:nth-child(even) td {
    background: var(--color-gray-bg);
}

@media (max-width: 768px) {
    :root {
        --font-size-2xl: 22px;
        --font-size-3xl: 28px;
    }
    .container { padding: var(--space-md) var(--space-sm); }
    .card-grid { grid-template-columns: 1fr; }
    .news-item__title { font-size: var(--font-size-base); }
    .page-title { font-size: var(--font-size-lg); }
}