* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Noto Sans SC', 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background: linear-gradient(135deg, #0a0e1a 0%, #0d1b2a 50%, #0a1628 100%);
    color: #e8f0ff;
    min-height: 100vh;
    padding: 20px;
    overflow-x: hidden;
}

/* 滚动条 */
::-webkit-scrollbar { width: 15px; }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, #00d4ff, #0066cc); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, #00fff7, #00aaff); }
::-webkit-scrollbar-track { background: #0d1b2a; }
::-webkit-scrollbar-button { display: none; }
::-webkit-scrollbar-corner { background: #0a0e1a; }
::-webkit-resizer { display: none; }

a:link, a:visited, a:hover, a:active { text-decoration: none; }

.container {
    max-width: 1265px;
    margin: 0 auto;
    position: relative;
}

/* 顶部标题 */
.header {
    text-align: center;
    padding: 30px 0;
    margin-bottom: 30px;
    position: relative;
}

.header::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #00d4ff 30%, #00fff7 50%, #00d4ff 70%, transparent);
}

.header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3.2rem;
    font-weight: 900;
    letter-spacing: 8px;
    background: linear-gradient(90deg, #00d4ff 0%, #00fff7 40%, #fff 60%, #00fff7 80%, #00d4ff 100%);
    background-size: 250% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleFlow 5s linear infinite;
    filter: drop-shadow(0 0 18px rgba(0, 212, 255, .5));
    margin-bottom: 15px;
}

@keyframes titleFlow {
    0%   { background-position: 0% center; }
    100% { background-position: 250% center; }
}

.header h2 {
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 4px;
    color: rgba(0, 212, 255, .55);
}

/* 分类选择区 */
.category-section {
    background: linear-gradient(135deg, rgba(4, 12, 32, .98), rgba(4, 16, 40, .96));
    border: 1px solid rgba(0, 212, 255, .2);
    clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
    padding: 25px;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.category-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    letter-spacing: 5px;
    color: #00d4ff;
    text-align: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    text-shadow: 0 0 14px rgba(0, 212, 255, .6);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

.categories {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.category-btn {
    flex: 0 0 calc(12.5% - 15px);
    min-width: 140px;
    padding: 14px 5px;
    background: rgba(0, 18, 42, .8);
    border: 1px solid rgba(0, 212, 255, .2);
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
    color: #8899aa;
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-align: center;
    cursor: pointer;
    transition: all .25s;
    position: relative;
    overflow: hidden;
}

.category-btn::before {
    content: '';
    position: absolute;
    top: -100%;
    left: -70%;
    width: 35%;
    height: 300%;
    background: linear-gradient(105deg, transparent 30%, rgba(0, 212, 255, .12) 50%, transparent 70%);
    transform: skewX(-20deg);
    pointer-events: none;
}

.category-btn:hover::before {
    animation: btnScan .5s forwards;
}

@keyframes btnScan {
    0%   { left: -70%; }
    100% { left: 140%; }
}

.category-btn:hover {
    border-color: rgba(0, 212, 255, .55);
    color: #00d4ff;
    box-shadow: 0 0 20px rgba(0, 212, 255, .2);
}

.category-btn.active {
    background: rgba(0, 212, 255, .12);
    border-color: rgba(0, 212, 255, .65);
    color: #00d4ff;
    box-shadow: 0 0 24px rgba(0, 212, 255, .3);
    text-shadow: 0 0 8px rgba(0, 212, 255, .6);
}

/* LOGO展示区 */
.logos-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-bottom: 50px;
}

.logo-card {
    background: linear-gradient(135deg, rgba(4, 12, 32, .98), rgba(4, 16, 40, .96));
    border: 1px solid rgba(0, 212, 255, .2);
    clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
    width: 400px;
    padding: 25px;
    position: relative;
    overflow: hidden;
    transition: all .3s;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(50px);
    animation: slideIn .6s forwards;
}

@keyframes slideIn {
    to { opacity: 1; transform: translateY(0); }
}

.logo-card:nth-child(1) { animation-delay: .1s; }
.logo-card:nth-child(2) { animation-delay: .2s; }
.logo-card:nth-child(3) { animation-delay: .3s; }

.logo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
    pointer-events: none;
}

.logo-card::after {
    content: '';
    position: absolute;
    top: -100%;
    left: -70%;
    width: 35%;
    height: 300%;
    background: linear-gradient(105deg, transparent 30%, rgba(255, 255, 255, .04) 50%, transparent 70%);
    transform: skewX(-20deg);
    pointer-events: none;
}

.logo-card:hover::after {
    animation: cardScan .6s forwards;
}

@keyframes cardScan {
    0%   { left: -70%; }
    100% { left: 140%; }
}

.logo-card:hover {
    border-color: rgba(0, 212, 255, .55);
    box-shadow: 0 0 30px rgba(0, 212, 255, .2), 0 12px 40px rgba(0, 0, 0, .6);
    transform: translateY(-6px);
}

.logo-preview {
    width: 100%;
    height: 240px;
    background: rgba(0, 12, 30, .88);
    border: 1px solid rgba(0, 212, 255, .14);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
    transition: all .3s;
}

.logo-preview img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    transition: all .4s ease;
    transform: scale(.95);
    border-radius: 4px;
}

.logo-card:hover .logo-preview img {
    transform: scale(1.05);
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, .5));
}

.logo-card:hover .logo-preview {
    border-color: rgba(0, 212, 255, .35);
    box-shadow: 0 0 16px rgba(0, 212, 255, .12);
}

.logo-info {
    flex-grow: 1;
    padding: 0 10px;
}

.logo-title {
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: #00d4ff;
    margin-bottom: 12px;
    text-shadow: 0 0 8px rgba(0, 212, 255, .4);
    text-align: center;
    position: relative;
    padding-bottom: 10px;
}

.logo-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 25%;
    width: 50%;
    height: 1px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

.logo-desc {
    font-family: 'Noto Sans SC', sans-serif;
    color: rgba(180, 210, 255, .75);
    font-size: .95rem;
    line-height: 1.8;
    margin-bottom: 20px;
    letter-spacing: .5px;
}

.logo-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.action-btn {
    padding: 11px 24px;
    font-family: 'Orbitron', sans-serif;
    font-size: .9rem;
    font-weight: 700;
    letter-spacing: 2px;
    border: none;
    cursor: pointer;
    clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
    transition: all .25s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.action-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -80%;
    width: 40%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .15), transparent);
    transform: skewX(-20deg);
}

.action-btn:hover::before {
    animation: btnShine .5s forwards;
}

@keyframes btnShine {
    0%   { left: -80%; }
    100% { left: 140%; }
}

.download-btn {
    background: linear-gradient(135deg, #004d26, #00a352);
    color: #fff;
    box-shadow: 0 4px 14px rgba(0, 255, 136, .3);
}

.download-btn:hover {
    box-shadow: 0 0 24px rgba(0, 255, 136, .55);
    filter: brightness(1.15);
    transform: translateY(-3px);
}

.more-btn {
    background: linear-gradient(135deg, #1a0050, #6b00cc);
    color: #fff;
    box-shadow: 0 4px 14px rgba(180, 79, 255, .3);
}

.more-btn:hover {
    box-shadow: 0 0 24px rgba(180, 79, 255, .55);
    filter: brightness(1.15);
    transform: translateY(-3px);
}

/* 底部版权 */
.footer {
    padding: 30px 0;
    background: rgba(4, 12, 32, .9);
    border: 1px solid rgba(0, 212, 255, .1);
    text-align: center;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #00d4ff 30%, #00fff7 50%, #00d4ff 70%, transparent);
}

.copyright {
    font-family: 'Share Tech Mono', monospace;
    font-size: 11px;
    letter-spacing: 3px;
    color: rgba(80, 110, 140, .8);
}

/* 粒子背景 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(0, 212, 255, .15);
    pointer-events: none;
    animation: float 8s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0); }
    50%       { transform: translateY(-30px) rotate(180deg); }
}

/* 搜索框 */
.search-container {
    position: relative;
    margin: 20px auto 40px;
    max-width: 600px;
}

.search-box {
    display: flex;
    gap: 10px;
    position: relative;
}

.search-box::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(90deg, transparent, #00d4ff 30%, #00fff7 50%, #00d4ff 70%, transparent);
    background-size: 400%;
    z-index: -1;
    opacity: .5;
    animation: light-pulse 4s linear infinite;
    filter: blur(4px);
}

@keyframes light-pulse {
    0%   { background-position: 0% 50%; }
    100% { background-position: 400% 50%; }
}

.search-input {
    flex: 1;
    padding: 14px 22px;
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 1rem;
    letter-spacing: 1px;
    background: rgba(4, 12, 32, .95);
    border: 1px solid rgba(0, 212, 255, .25);
    color: #e8f0ff;
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
    transition: all .3s;
    outline: none;
}

.search-input:focus {
    border-color: rgba(0, 212, 255, .6);
    box-shadow: 0 0 20px rgba(0, 212, 255, .25);
}

.search-box:hover::before {
    opacity: .8;
}

.search-button {
    padding: 0 28px;
    font-family: 'Orbitron', sans-serif;
    font-size: .9rem;
    font-weight: 700;
    letter-spacing: 2px;
    background: linear-gradient(135deg, #004080, #0072ff);
    color: #fff;
    border: 1px solid rgba(0, 212, 255, .35);
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
    cursor: pointer;
    transition: all .25s;
}

.search-button:hover {
    box-shadow: 0 0 20px rgba(0, 212, 255, .5);
    filter: brightness(1.15);
}

/* 搜索模态框 */
.search-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 3, 12, .9);
    backdrop-filter: blur(12px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity .3s;
}

.search-modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: linear-gradient(135deg, rgba(4, 12, 32, .98), rgba(4, 16, 40, .96));
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 30px;
    border: 1px solid rgba(0, 212, 255, .28);
    clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
    box-shadow: 0 0 40px rgba(0, 212, 255, .2);
    position: relative;
    scrollbar-width: thin;
    scrollbar-color: #364571 #0d1b2a;
}

.modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

.close-button {
    position: absolute;
    top: 15px;
    right: 20px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: 1px solid rgba(0, 212, 255, .25);
    color: #8899aa;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .2s;
}

.close-button:hover {
    border-color: #ff2244;
    color: #ff2244;
    transform: rotate(90deg);
}

.modal-title {
    font-family: 'Orbitron', sans-serif;
    text-align: center;
    font-size: 1.4rem;
    letter-spacing: 4px;
    color: #00d4ff;
    margin-bottom: 30px;
    text-shadow: 0 0 14px rgba(0, 212, 255, .6);
}

.search-results {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 20px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    margin: 25px 0;
    gap: 8px;
}

.page-button {
    width: 36px;
    height: 36px;
    background: rgba(0, 18, 42, .8);
    border: 1px solid rgba(0, 212, 255, .2);
    clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
    color: #8899aa;
    font-family: 'Share Tech Mono', monospace;
    font-size: .95rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .2s;
}

.page-button:hover {
    background: rgba(0, 212, 255, .1);
    border-color: rgba(0, 212, 255, .5);
    color: #00d4ff;
    box-shadow: 0 0 10px rgba(0, 212, 255, .2);
}

.page-button.active {
    background: rgba(0, 212, 255, .15);
    border-color: #00d4ff;
    color: #00d4ff;
    box-shadow: 0 0 14px rgba(0, 212, 255, .3);
}

.page-button.prev,
.page-button.next {
    width: auto;
    padding: 0 16px;
    clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}

.page-button.disabled {
    opacity: .3;
    cursor: not-allowed;
}

/* 价格标签 */
.price-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 5px 12px;
    font-family: 'Share Tech Mono', monospace;
    font-size: .85rem;
    letter-spacing: 1px;
    clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
    z-index: 10;
}

.price-tag.free {
    background: rgba(0, 255, 136, .12);
    border: 1px solid rgba(0, 255, 136, .35);
    color: #00ff88;
}

.price-tag.premium {
    background: rgba(180, 79, 255, .12);
    border: 1px solid rgba(180, 79, 255, .35);
    color: #b44fff;
}

/* 特殊按钮 */
.new-product-btn { position: relative; overflow: visible; }

.new-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background: #ff2244;
    color: #fff;
    font-size: .65rem;
    font-weight: 700;
    padding: 3px 8px;
    clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
    animation: badgePulse 1.5s infinite;
    z-index: 10;
}

@keyframes badgePulse {
    0%   { box-shadow: 0 0 0 0 rgba(255, 34, 68, .7); }
    70%  { box-shadow: 0 0 0 8px rgba(255, 34, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 34, 68, 0); }
}

.special-btn {
    background: rgba(255, 215, 0, .1);
    border: 1px solid rgba(255, 215, 0, .35);
    color: #ffd700;
    text-shadow: 0 0 8px rgba(255, 215, 0, .4);
}

.special-btn:hover {
    background: rgba(255, 215, 0, .18);
    box-shadow: 0 0 20px rgba(255, 215, 0, .4);
    border-color: rgba(255, 215, 0, .65);
}

/* 顶部导航 */
.nav5588ps-new-top {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 90px;
    background: rgba(5, 12, 28, .97);
    border-bottom: 1px solid rgba(0, 212, 255, .14);
    backdrop-filter: blur(14px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav5588ps-new-top::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #00d4ff 25%, #00fff7 50%, #00d4ff 75%, transparent);
}

.nav5588ps-new-top-container {
    width: 1350px;
    height: 100%;
    display: flex;
    justify-content: space-around;
    align-items: center;
    position: relative;
}

.nav5588ps-new-top-btn {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav5588ps-new-top-btn > a,
.nav5588ps-new-top-btn > .nav5588ps-new-top-trigger {
    cursor: pointer;
    padding: .9em 1.6em;
    min-width: 120px;
    min-height: 44px;
    font-family: 'Noto Sans SC', sans-serif;
    font-size: .95rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: #8899aa;
    background: transparent;
    border: 1px solid rgba(0, 212, 255, .15);
    clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
    text-decoration: none;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: all .25s;
}

.nav5588ps-new-top-btn > a::before,
.nav5588ps-new-top-btn > .nav5588ps-new-top-trigger::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
    transform: scaleX(0);
    transition: transform .25s;
}

.nav5588ps-new-top-btn > a:hover,
.nav5588ps-new-top-btn > .nav5588ps-new-top-trigger:hover {
    color: #00d4ff;
    background: rgba(0, 212, 255, .06);
    border-color: rgba(0, 212, 255, .3);
}

.nav5588ps-new-top-btn > a:hover::before,
.nav5588ps-new-top-btn > .nav5588ps-new-top-trigger:hover::before {
    transform: scaleX(1);
}

.nav5588ps-new-top-btn > a:active,
.nav5588ps-new-top-btn > .nav5588ps-new-top-trigger:active {
    transform: translateY(1px);
}

/* 二级菜单 */
.nav5588ps-new-top-submenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translate(-50%, 8px);
    min-width: 200px;
    background: rgba(4, 12, 28, .98);
    border: 1px solid rgba(0, 212, 255, .2);
    padding: 8px 0;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity .22s, transform .22s;
    box-shadow: 0 12px 40px rgba(0, 0, 0, .65);
}

.nav5588ps-new-top-submenu::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

.nav5588ps-new-top-submenu.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

.nav5588ps-new-top-submenu ul { list-style: none; }

.nav5588ps-new-top-submenu li {
    margin-bottom: 0;
    position: relative;
}

.nav5588ps-new-top-submenu a {
    display: block;
    padding: 11px 20px;
    font-family: 'Noto Sans SC', sans-serif;
    font-size: .9rem;
    letter-spacing: 1px;
    color: #8899aa;
    text-decoration: none;
    transition: all .18s;
    border-left: 2px solid transparent;
}

.nav5588ps-new-top-submenu a:hover {
    background: rgba(0, 212, 255, .06);
    color: #00d4ff;
    border-left-color: #00d4ff;
    letter-spacing: 2px;
}

.nav5588ps-new-top-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 22px;
    height: 22px;
    background: transparent;
    border: 1px solid rgba(255, 34, 68, .4);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #ff2244;
    font-size: 12px;
    transition: all .2s;
    z-index: 2;
}

.nav5588ps-new-top-close:hover {
    background: rgba(255, 34, 68, .2);
    border-color: #ff2244;
    box-shadow: 0 0 8px rgba(255, 34, 68, .4);
}

/* 返回顶部按钮 */
.dibu-5588ps-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px;
}

.dibu-5588ps-header {
    text-align: center;
    margin: 60px 0 40px;
    padding: 20px;
}

.dibu-5588ps-header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: 8px;
    color: #00d4ff;
    text-shadow: 0 0 30px rgba(0, 212, 255, .6);
    margin-bottom: 20px;
}

.dibu-5588ps-header p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
    color: rgba(180, 210, 255, .75);
    letter-spacing: 1px;
}

.dibu-5588ps-content-section {
    background: linear-gradient(135deg, rgba(4, 12, 32, .98), rgba(4, 16, 40, .96));
    border: 1px solid rgba(0, 212, 255, .15);
    clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
    padding: 40px;
    margin: 40px 0;
    position: relative;
}

.dibu-5588ps-content-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

.dibu-5588ps-content-section h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.4rem;
    letter-spacing: 4px;
    margin-bottom: 30px;
    color: #ffd700;
    text-shadow: 0 0 10px rgba(255, 215, 0, .4);
    position: relative;
    padding-bottom: 12px;
}

.dibu-5588ps-content-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, #ffd700, transparent);
}

.dibu-5588ps-content-section p {
    font-size: 1rem;
    line-height: 1.9;
    margin: 16px 0;
    color: rgba(180, 210, 255, .8);
    letter-spacing: .5px;
}

.dibu-5588ps-content-section ul {
    padding: 16px 0 16px 32px;
}

.dibu-5588ps-content-section li {
    margin: 12px 0;
    font-size: 1rem;
    line-height: 1.8;
    color: rgba(180, 210, 255, .8);
}

.dibu-5588ps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin: 40px 0;
}

.dibu-5588ps-card {
    background: rgba(0, 18, 42, .8);
    border: 1px solid rgba(0, 212, 255, .14);
    clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
    padding: 28px;
    text-align: center;
    transition: all .28s;
}

.dibu-5588ps-card:hover {
    border-color: rgba(0, 212, 255, .45);
    box-shadow: 0 8px 30px rgba(0, 0, 0, .5), 0 0 16px rgba(0, 212, 255, .12);
    transform: translateY(-5px);
}

.dibu-5588ps-card i {
    font-size: 2.8rem;
    margin-bottom: 18px;
    color: #00d4ff;
    text-shadow: 0 0 16px rgba(0, 212, 255, .6);
    display: block;
}

.dibu-5588ps-card h3 {
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 12px;
    color: #ffd700;
}

/* 返回顶部按钮 */
.dibu-5588ps-back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    z-index: 1000;
    padding: 12px 22px;
    background: rgba(4, 12, 32, .95);
    border: 1px solid rgba(0, 212, 255, .35);
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
    color: #00d4ff;
    font-family: 'Orbitron', sans-serif;
    font-size: .85rem;
    letter-spacing: 2px;
    font-weight: 700;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all .35s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 130px;
    box-shadow: 0 0 16px rgba(0, 212, 255, .15);
}

.dibu-5588ps-back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dibu-5588ps-back-to-top:hover {
    border-color: #00d4ff;
    box-shadow: 0 0 24px rgba(0, 212, 255, .4);
    transform: translateY(-4px);
    color: #00fff7;
}

.dibu-5588ps-back-to-top:active {
    transform: translateY(0);
}

.dibu-5588ps-back-to-top::after {
    content: "↑";
    margin-left: 8px;
    font-size: 1.1rem;
    transition: transform .3s;
}

.dibu-5588ps-back-to-top:hover::after {
    animation: arrowBounce .6s infinite alternate;
}

@keyframes arrowBounce {
    from { transform: translateY(0); }
    to   { transform: translateY(-5px); }
}

.dibu-5588ps-footer {
    text-align: center;
    margin-top: 60px;
    padding: 24px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 11px;
    letter-spacing: 2px;
    color: rgba(80, 110, 140, .8);
    border-top: 1px solid rgba(0, 212, 255, .1);
}

.dibu-5588ps-scroll-indicator {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(4, 12, 32, .95);
    border: 1px solid rgba(0, 212, 255, .3);
    clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
    color: #00d4ff;
    padding: 10px 22px;
    font-family: 'Share Tech Mono', monospace;
    font-size: .85rem;
    letter-spacing: 2px;
    z-index: 1000;
    animation: tipPulse 2s infinite;
}

@keyframes tipPulse {
    0%   { box-shadow: 0 0 0 0 rgba(0, 212, 255, .4); }
    70%  { box-shadow: 0 0 0 10px rgba(0, 212, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0); }
}

/* 响应式 */
@media (max-width: 1000px) {
    .categories { gap: 12px; }
    .category-btn {
        min-width: 120px;
        flex: 0 0 calc(16.66% - 12px);
        padding: 12px 5px;
        font-size: .95rem;
    }
}

@media (max-width: 768px) {
    .header h1 { font-size: 2.2rem; }
    .category-btn {
        flex: 0 0 calc(25% - 10px);
        min-width: 100px;
    }
    .logo-preview { height: 200px; }
    .dibu-5588ps-back-to-top {
        bottom: 20px;
        right: 20px;
        min-width: 110px;
    }
    .dibu-5588ps-header h1 { font-size: 2.5rem; }
    .dibu-5588ps-content-section { padding: 22px; }
}

@media (max-width: 480px) {
    .header h1 { font-size: 1.8rem; }
    .category-btn {
        flex: 0 0 calc(33.33% - 8px);
        padding: 10px 4px;
        font-size: .9rem;
    }
    .logo-preview { height: 180px; }
    .action-btn { padding: 10px 18px; }
}