*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    text-decoration: none;
    list-style: none;
    scroll-behavior: smooth;
}
:root{
    --bg-color: #0f172a;
    --second-bg-color: #1e293b;
    --text-color: #fff;
    --second-color: #cbd5e1;
    --main-color: #3b82f6;
    --accent-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --big-font: 5rem;
    --h2-font: 3rem;
    --p-font: 1.1rem;  
}
body{
    background: var(--bg-color);
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
    color: var(--text-color);
}
header{
    position: fixed;
    width: 100%;
    top: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: transparent;
    padding: 22px 15%;
    border-bottom: 1px solid transparent;
    transition: all .45s ease;
}
.logo{
    color: var(--text-color);
    font-size: 35px;
    font-weight: 700;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    display: block;
    transition: all 0.3s ease;
}

.logo:hover .logo-img {
    animation: bounce 0.6s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.status-badge {
    font-size: 12px;
    font-weight: 600;
    color: var(--success-color);
    background: rgba(16, 185, 129, 0.1);
    padding: 4px 10px;
    border-radius: 15px;
    border: 1px solid var(--success-color);
    animation: pulse-status 2s ease-in-out infinite;
}

@keyframes pulse-status {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

span{
    color: var(--main-color);
}
.navlist{
    display: flex;
}
.navlist a{
    color: var(--second-color);
    font-size: 17px;
    font-weight: 500;
    margin: 0 25px;
    transition: all .45s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}
.navlist a i {
    font-size: 18px;
    color: var(--second-color);
    transition: all .45s ease;
}
.navlist a:hover i,
.navlist a.active i {
    color: var(--main-color);
}
.navlist a:hover,
.navlist a.active {
    color: var(--main-color);
}
#menu-icon{
    font-size: 35px;
    color: var(--text-color);
    z-index: 10001;
    cursor: pointer;
    margin-left: 25px;
    display: none;
}

section{
    padding: 160px 15% 120px;
}

section.end {
    padding: 32px 15% !important;
}
.home {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}
.slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.slider::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.slider img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}
.slider img:first-child {
    display: block;
}
.home-text {
    position: absolute;
    top: 50%;
    left: calc(30px + 13.5%);
    transform: translate(0, -50%);
    text-align: left;
    color: #fff;
    z-index: 2;
}
.home-text .slid {
    font-size: 18px;
    margin-bottom: 10px;
}
.home-text .one {
    display: inline-block;
    margin-right: 15px;
    height: 32px;
    padding: 0 15px;
    line-height: 32px;
    font-size: 20px;
    font-weight: 500;
    border-radius: 5px;
    background: var(--main-color);
    color: var(--text-color);
}
.home-text .two {
    display: inline-block;
    color: var(--second-color);
    font-size: 20px;
    font-weight: 500;
}
.home-text h1 {
    font-size: var(--big-font);
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.1;
    margin: 0 0 8px;
}
.home-text h3 {
    color: var(--text-color);
    margin: 0 0 35px;
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.1;
}
.home-text p {
    color: var(--second-color);
    font-size: var(--p-font);
    line-height: 1.8;
    margin-bottom: 40px;
}
  
.home-text .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.home-text .btn {
    display: inline-block;
    padding: 12px 28px;
    background: var(--main-color);
    border-radius: 5px;
    color: var(--text-color);
    font-size: 1rem;
    letter-spacing: 1px;
    font-weight: 600;
    transition: all .45s ease;
}
.btn{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--main-color), var(--accent-color));
    border-radius: 8px;
    color: var(--text-color);
    font-size: 1rem;
    letter-spacing: 1px;
    font-weight: 600;
    transition: all .3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover{
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(59, 130, 246, 0.5);
}

.btn i {
    font-size: 1.2rem;
}
.btn4{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--main-color);
    border-radius: 5px;
    color: var(--text-color);
    font-size: 1rem;
    letter-spacing: 1px;
    font-weight: 600;
    transition: all .45s ease;
    margin-left: 10px;
}
.btn4:hover{
    transform: scale(0.9);
}
.btn3{
    display: inline-block;
    padding: 12px 28px;
    background: var(--main-color);
    border-radius: 5px;
    color: var(--text-color);
    font-size: 1rem;
    letter-spacing: 1px;
    font-weight: 600;
    transition: all .45s ease;
    margin-left: 10px;
}

/* Tool / auxiliary downloads (ex.: WinRAR) */
.tool-download {
    margin-top: 28px;
    padding: 18px 18px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.10), rgba(0, 0, 0, 0.18));
    border: 1px solid rgba(59, 130, 246, 0.22);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(6px);
}

.tool-download .tool-title {
    margin: 0 0 8px;
    font-size: 1.15rem;
    font-weight: 700;
}

.tool-download .tool-desc {
    margin: 0 0 14px;
    color: var(--second-color);
    line-height: 1.7;
}

.tool-download .tool-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.tool-download .tool-meta {
    margin: 10px 0 0;
    color: var(--second-color);
    font-size: 0.98rem;
    line-height: 1.7;
}

.tool-download .tool-meta:first-child {
    margin-top: 0;
}

.tool-download strong {
    color: #fff;
    font-weight: 700;
}

.tool-download code {
    color: #fff;
    background: rgba(0, 0, 0, 0.35);
    padding: 2px 8px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    word-break: break-all;
}

.download-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    align-items: stretch;
    margin-top: 18px;
}

.download-actions > a {
    width: 100%;
    text-align: center;
    justify-content: center;
}

.download-actions > a:first-child {
    grid-column: 1 / -1;
}

.download-actions .btn3,
.download-actions .btn4 {
    margin-left: 0;
}

@media (max-width: 700px) {
    .download-actions {
        grid-template-columns: 1fr;
    }
    .download-actions .btn,
    .download-actions .btn3,
    .download-actions .btn4 {
        width: 100%;
        justify-content: center;
    }
    .download-actions > a:first-child {
        grid-column: auto;
    }
}
.btn3:hover{
    transform: scale(0.9);
}
.btn2{
    display: inline-block;
    padding: 12px 28px;
    background: var(--main-color);
    border-radius: 5px;
    color: var(--text-color);
    font-size: 1rem;
    letter-spacing: 1px;
    font-weight: 600;
    transition: all .45s ease;
    margin: 10px;
}
.btn2:hover{
    transform: scale(0.9);
}
header.sticky{
    background: var(--bg-color);
    border-bottom: 1px solid #ffffff1a;
    padding: 12px 15%;
}

.about{
    width: 100%;
    height: 100vh;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
    gap: 1.5rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(6, 182, 212, 0.05)), url('../img/about-bg.jpg') left top/auto fixed no-repeat;
}
.about-img img{
    max-width: 530px;
    height: auto;
    width: 100%;
    border-radius: 8px;
}
.about-text h2{
    font-size: var(--h2-font);
    line-height: 1;
}
.about-text h4{
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
    line-height: 1.7;
    margin: 15px 0 30px;
}
.about-text p{
    color: var(--second-color);
    font-size: var(--p-font);
    line-height: 1.8;
    margin-bottom: 4rem;
}
.services{
    background: var(--second-bg-color);
    height: 100vh;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(6, 182, 212, 0.05)), url('../img/services-bg.jpg') left top/auto fixed no-repeat;
}
.main-text{
    text-align: center;
}
.main-text p{
    color: var(--second-color);
    font-size: 15px;
    margin-bottom: 15px;
}
.main-text h2{
    font-size: var(--h2-font);
    line-height: 1;
}
.services-content{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, auto));
    align-items: center;
    gap: 2.5rem;
    margin-top: 5rem;
}
.box{
    background: var(--bg-color);
    padding: 35px 45px;
    border-radius: 12px;
    transition: all .3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--main-color), var(--accent-color));
}

.s-icons i{
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--text-color);
    transition: all .3s ease;
}

.box:hover .s-icons i {
    transform: scale(1.1) rotateY(360deg);
}

.box h3{
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 15px;
}
.box p{
    color: var(--second-color);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 25px;
}
.read{
    display: inline-block;
    padding: 10px 20px;
    background: var(--second-bg-color);
    color: var(--second-color);
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    transition: all .3s ease;
    border: 1px solid transparent;
}
.read:hover{
    letter-spacing: 1px;
    background: var(--main-color);
    color: var(--text-color);
    border-color: var(--main-color);
    transform: translateX(5px);
}
.box:hover{
    transform: translateY(-10px);
    cursor: pointer;
    border-color: var(--main-color);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.2);
}

.portfolio-content{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, auto));
    align-items: center;
    gap: 2.5rem;
    margin-top: 5rem;
}

section.portfolio {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(6, 182, 212, 0.05)), url('../img/portfolio-bg.jpg') left top/auto fixed no-repeat;
}
.row{
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.row:hover {
    border-color: var(--main-color);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

.row img{
    width: 100%;
    border-radius: 12px;
    display: block;
    transition: transform 0.5s ease; 
}
.layer{
    width: 100%;
    height: 0;
    background: linear-gradient(rgba(0,0,0,0.3), rgba(59, 130, 246, 0.4));
    position: absolute;
    border-radius: 8px;
    left: 0;
    bottom: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 40px;
    transition: height 0.5s;
}
.layer h5{
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
}
.layer p{
    color: var(--second-color);
    font-size: 1rem;
    line-height: 1.8;
}
.layer i{
    color: var(--main-color);
    margin-top: 20px;
    font-size: 20px;
    background: var(--text-color);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}
.row:hover img{
    transform: scale(1.1);
}
.row:hover .layer{
    height: 100%;
}

.contact{
    background: var(--second-bg-color);
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
    text-align: center;
    gap: 2.5rem;
    padding: 80px 15% 20px;
}
.contact-text h2{
    font-size: var(--h2-font);
    line-height: 1;
    margin-bottom: 0.5rem;
}
.contact-text h4{
    color: var(--text-color);
    margin: 8px 0;
    font-size: 18px;
    font-weight: 600;
}
.contact-text p{
    color: var(--second-color);
    font-size: var(--p-font);
    line-height: 1.6;
    margin-bottom: 15px;   
}
.list{
    margin-bottom: 1.2rem;
}
.list li{
    margin-bottom: 6px;
}
.list li a{
    display: inline-block;
    color: var(--second-color);
    font-size: 13px;
    transition: all .45s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}
.list li a:hover{
    color: var(--text-color);
    transform: translateX(5px);
}
.contact-icons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-top: 1rem;
    flex-wrap: nowrap;
    width: 100%;
}

.contact-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    height: 45px;
    width: 45px;
    background: var(--main-color);
    border-radius: 8px;
    transition: all .45s ease;
    text-decoration: none;
}

.contact-icons a i {
    font-size: 22px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icons a:hover {
    background: var(--accent-color);
    color: var(--bg-color);
}

.contact-icons a:hover i {
    color: var(--bg-color);
}

.contact-icons a.qq-icon {
    background: var(--main-color);
}

.contact-icons a.qq-icon i {
    font-size: 22px;
    color: var(--text-color);
}

.contact-icons a.qq-icon:hover {
    background: var(--accent-color);
}

.contact-icons a.qq-icon:hover i {
    color: var(--bg-color);
}

.end{
    padding: 3px 15% !important;
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    background: var(--bg-color);
    justify-content: center;
    min-height: auto !important;
    height: auto !important;
}
.last-text {
    width: 100%;
    padding: 0 !important;
    margin: 0 !important;
}
.last-text p{
    color: var(--second-color);
    font-size: 12px;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin: 0 !important;
    line-height: 1 !important;
    padding: 0 !important;
}
.last-text a {
    color: var(--main-color);
    text-decoration: underline;
}
.last-text a:hover {
    color: var(--accent-color);
}
.top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--main-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0;
    pointer-events: none;
}

.top.show {
    opacity: 1;
    pointer-events: all;
}

.top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.6);
}

.top a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.top i {
    font-size: 1.5rem;
    color: var(--text-color);
    transition: all 0.3s ease;
}

/* =====================
   社区侧边栏 (QQ/KOOK)
   ===================== */

.qq-sidebar {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 998;
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    transition: all 0.4s ease;
}

.qq-toggle {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #0084ff, #005fcc);
    border-radius: 8px 0 0 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-color);
    cursor: pointer;
    box-shadow: -4px 4px 15px rgba(0, 132, 255, 0.3);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.qq-toggle img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 0;
}

.qq-toggle:hover {
    background: linear-gradient(135deg, #005fcc, #0042a3);
    box-shadow: -6px 6px 20px rgba(0, 132, 255, 0.5);
}

.qq-content {
    width: 0;
    background: var(--second-bg-color);
    border-radius: 8px 0 0 8px;
    padding: 0;
    overflow: hidden;
    transition: all 0.4s ease;
    box-shadow: -8px 4px 25px rgba(0, 0, 0, 0.3);
    border: none;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 0;
    min-height: 0;
}

.qq-sidebar.active .qq-content {
    width: 320px;
    padding: 1.5rem;
}

.community-header {
    text-align: center;
    padding-bottom: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0;
    transition: opacity 0.4s ease 0.1s;
}

.qq-sidebar.active .community-header {
    opacity: 1;
}

.community-header h3 {
    color: var(--text-color);
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
}

.community-header p {
    color: var(--second-color);
    font-size: 0.85rem;
    margin: 0;
}

.community-item {
    padding: 1rem 0;
    opacity: 0;
    transition: opacity 0.4s ease 0.15s;
}

.qq-sidebar.active .community-item {
    opacity: 1;
}

.community-item:last-of-type {
    border-bottom: none;
}

.item-header {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin-bottom: 0.8rem;
    padding-bottom: 0.6rem;
}

.item-header i {
    font-size: 1.3rem;
    color: #0084ff;
}

.item-header span {
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 700;
}

.item-content {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.item-label {
    color: var(--second-color);
    font-size: 0.85rem;
    margin: 0;
}

.item-label strong {
    color: #0084ff;
    font-weight: 700;
    font-family: 'Courier New', monospace;
}

.item-actions {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.action-btn {
    flex: 1;
    min-width: 80px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.6rem 0.8rem;
    border: none;
    border-radius: 6px;
    font-weight: 700;
    cursor: pointer;
    font-size: 0.85rem;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.copy-btn {
    background: rgba(0, 132, 255, 0.2);
    color: #0084ff;
    border: 1px solid #0084ff;
}

.copy-btn:hover {
    background: #0084ff;
    color: var(--text-color);
    transform: translateY(-2px);
}

.join-btn {
    background: linear-gradient(135deg, #0084ff, #005fcc);
    color: var(--text-color);
}

.join-btn:hover {
    background: linear-gradient(135deg, #005fcc, #0042a3);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 132, 255, 0.4);
}

.kook-btn {
    background: linear-gradient(135deg, #9D5FFF, #6D28D9);
    color: var(--text-color);
}

.kook-btn:hover {
    background: linear-gradient(135deg, #6D28D9, #4C1D95);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(157, 95, 255, 0.4);
}

.community-footer {
    text-align: center;
    padding-top: 1rem;
    opacity: 0;
    transition: opacity 0.4s ease 0.2s;
}

.qq-sidebar.active .community-footer {
    opacity: 1;
}

.community-footer p {
    color: var(--second-color);
    font-size: 0.8rem;
    margin: 0;
}


/* =====================
   HELP PAGE STYLES
   ===================== */

.help-section {
    padding: 160px 15% 80px;
    min-height: 100vh;
    background: var(--bg-color);
}

.help-header {
    text-align: center;
    margin-bottom: 5rem;
}

.help-header h1 {
    font-size: var(--h2-font);
    color: var(--text-color);
    margin-bottom: 1rem;
}

.help-header p {
    font-size: 1.3rem;
    color: var(--second-color);
}

.help-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.help-card {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2.5rem;
    border: 1px solid rgba(59, 130, 246, 0.3);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.help-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--main-color), var(--accent-color));
}

.help-card:hover {
    transform: translateY(-10px);
    border-color: var(--main-color);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.2);
}

.help-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(6, 182, 212, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: var(--main-color);
}

.help-card h3 {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.help-content h4 {
    color: var(--text-color);
    font-size: 1.1rem;
    margin: 1.5rem 0 0.8rem;
    font-weight: 600;
}

.help-content p {
    color: var(--second-color);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.help-content a {
    color: var(--main-color);
    text-decoration: underline;
    transition: all 0.3s ease;
}

.help-content a:hover {
    color: var(--accent-color);
}

.rule-list {
    list-style: none;
    margin: 1rem 0;
}

.rule-list li {
    color: var(--second-color);
    padding: 0.7rem 0 0.7rem 1.5rem;
    position: relative;
    line-height: 1.7;
}

.rule-list li::before {
    content: '✓ ';
    position: absolute;
    left: 0;
    color: var(--text-color);
    font-weight: bold;
}

.faq-item {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-item h4 {
    color: var(--main-color);
    margin-bottom: 0.7rem;
}

.faq-item p {
    color: var(--second-color);
    line-height: 1.7;
}

.support-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}

.support-table th,
.support-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.support-table th {
    background: rgba(59, 130, 246, 0.1);
    color: var(--main-color);
    font-weight: 700;
}

.support-table tr:hover {
    background: rgba(59, 130, 246, 0.05);
}

.contact-list {
    list-style: none;
    margin: 1rem 0;
}

.contact-list li {
    color: var(--second-color);
    padding: 0.7rem 0;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.contact-list i {
    color: var(--main-color);
    font-size: 1.3rem;
}

.contact-list a {
    color: var(--main-color);
    transition: all 0.3s ease;
}

.contact-list a:hover {
    color: var(--accent-color);
}


@media (max-width: 1480px) {
    header {
      padding: 12px 2.5%;
      transition: .1s;
    }
    header.sticky {
      padding: 10px 2.5%;
      transition: .1s;
    }
    section {
      padding: 110px 3% 60px;
    }
    section.end {
      padding: 32px 3% !important;
    }
  
  @media (max-width: 1100px) {
    :root {
      --big-font: 4rem;
      --h2-font: 2.5rem;
      --p-font: 1rem;
      transition: .1s;
    }
    .home-text h3 {
      font-size: 2.5rem;
    }
    .home {
      height: 87vh;
    }
  }
  
  @media (max-width: 920px) {
    .about {
      grid-template-columns: 1fr;
    }
    .about-img {
      text-align: center;
      order: 2;
    }
    .about-img img {
      width: 100%;
      height: auto;
      max-width: 100%;
    }
    .contact {
      grid-template-columns: 1fr;
    }
    .help-container {
      grid-template-columns: 1fr;
    }
  }
  
  @media (max-width: 820px) {
    #menu-icon {
      display: block;
    }
    
    .logo {
      font-size: 28px;
      flex-wrap: wrap;
    }
    
    .status-badge {
      font-size: 10px;
      padding: 3px 8px;
    }
    
    .navlist {
      position: absolute;
      top: -1000px;
      right: 0;
      left: 0;
      display: flex;
      flex-direction: column;
      background: var(--bg-color);
      text-align: left;
      transition: all .45s ease;
      z-index: 999;
    }
    .navlist a {
      display: block;
      margin: 17px;
      font-size: 20px;
      transition: all .45s ease;
      color: var(--text-color);
    }
    .navlist a:hover {
      color: var(--main-color);
    }
    .navlist a.active {
      color: var(--text-color);
    }
    .navlist.open {
      top: 100%;
    }

    /* QQ 侧边栏手机适配 - 右侧垂直 */
    .qq-sidebar {
      right: 0;
      left: auto;
      bottom: auto;
      top: 50%;
      transform: translateY(-50%);
      flex-direction: row-reverse;
      width: auto;
    }

    .qq-toggle {
      border-radius: 8px 0 0 8px;
      width: 45px;
      height: 45px;
      font-size: 1.3rem;
      flex-shrink: 0;
    }

    .qq-content {
      width: 0;
      min-width: 0;
      max-height: 70vh;
      border-radius: 8px 0 0 8px;
      border: none !important;
      overflow-y: auto;
      padding: 0;
      background: var(--second-bg-color);
      box-shadow: none;
    }

    .qq-sidebar.active .qq-content {
      width: 280px;
      padding: 1.3rem;
      border: none !important;
    }

    .community-header,
    .community-item,
    .community-footer {
      opacity: 0;
      transition: opacity 0.4s ease;
    }

    .qq-sidebar.active .community-header,
    .qq-sidebar.active .community-item,
    .qq-sidebar.active .community-footer {
      opacity: 1;
    }

    .item-actions {
      flex-direction: column;
    }

    .action-btn {
      min-width: auto;
      width: 100%;
    }

    /* 回到顶部按钮手机适配 */
    .top {
      bottom: 20px;
      right: 20px;
      width: 45px;
      height: 45px;
    }

    .top i {
      font-size: 1.2rem;
    }
  }

  @media (max-width: 480px) {
    :root {
      --big-font: 2.5rem;
      --h2-font: 1.8rem;
      --p-font: 0.95rem;
    }

    header {
      padding: 12px 3%;
    }

    .logo {
      font-size: 24px;
    }

    .status-badge {
      font-size: 9px;
      padding: 2px 6px;
    }

    section {
      padding: 80px 3% 50px;
    }

    .home-text {
      left: 3%;
    }

    .home-text h1 {
      font-size: 2.2rem;
    }

    .home-text h3 {
      font-size: 1.5rem;
      margin-bottom: 1.5rem;
    }

    .home-text p {
      font-size: 0.9rem;
      margin-bottom: 2rem;
    }

    .btn {
      padding: 12px 24px;
      font-size: 0.95rem;
    }

    .about {
      grid-template-columns: 1fr;
    }

    .about-img img {
      max-width: 100%;
    }

    .about-text h2 {
      font-size: 1.8rem;
    }

    .about-text h4 {
      font-size: 1.1rem;
    }

    .download-actions {
      grid-template-columns: 1fr;
      gap: 10px;
    }

    .btn3, .btn4 {
      margin-left: 0;
      padding: 10px 20px;
      font-size: 0.9rem;
    }

    .services {
      height: auto;
    }

    .services-content {
      grid-template-columns: 1fr;
      gap: 1.5rem;
      margin-top: 2rem;
    }

    .box {
      padding: 1.5rem;
    }

    .box h3 {
      font-size: 1.2rem;
    }

    .box p {
      font-size: 0.9rem;
    }

    .portfolio-content {
      grid-template-columns: 1fr;
      gap: 1.5rem;
      margin-top: 2rem;
    }

    .row img {
      height: 200px;
    }

    .layer {
      padding: 20px;
    }

    .layer h5 {
      font-size: 1.1rem;
      margin-bottom: 0.8rem;
    }

    .layer p {
      font-size: 0.85rem;
    }

    .contact {
      grid-template-columns: 1fr;
      padding: 80px 3% 50px;
    }

    .contact-text h2 {
      font-size: 1.8rem;
    }

    .contact-text h4 {
      font-size: 1.1rem;
    }

    .list li a {
      font-size: 0.95rem;
    }

    .contact-icons i {
      width: 40px;
      height: 40px;
      font-size: 18px;
    }

    section.end {
      padding: 32px 3% !important;
    }

    /* QQ 侧边栏 480px 手机适配 - 右侧垂直 */
    .qq-sidebar {
      right: 0;
      left: auto;
      bottom: auto;
      top: 50%;
      transform: translateY(-50%);
      flex-direction: row-reverse;
      width: auto;
    }

    .qq-toggle {
      border-radius: 8px 0 0 8px;
      width: 40px;
      height: 40px;
      font-size: 1.2rem;
      flex-shrink: 0;
    }

    .qq-content {
      width: 0;
      min-width: 0;
      max-height: 70vh;
      border-radius: 8px 0 0 8px;
      border: none !important;
      overflow-y: auto;
      padding: 0;
      background: var(--second-bg-color);
      box-shadow: none;
    }

    .qq-sidebar.active .qq-content {
      width: calc(100vw - 50px);
      max-width: 260px;
      padding: 1.1rem;
      border: none !important;
    }

    .community-header h3 {
      font-size: 1.1rem;
    }

    .community-header p {
      font-size: 0.75rem;
    }

    .item-header {
      font-size: 0.9rem;
      gap: 0.5rem;
    }

    .item-header i {
      font-size: 1.1rem;
    }

    .item-content {
      gap: 0.6rem;
    }

    .item-label {
      font-size: 0.8rem;
    }

    .action-btn {
      padding: 0.5rem 0.6rem;
      font-size: 0.8rem;
      min-width: auto;
      width: 100%;
    }

    .action-btn i {
      font-size: 0.9rem;
    }

    .community-item {
      padding: 0.8rem 0;
    }

    .community-footer p {
      font-size: 0.75rem;
    }

    /* 回到顶部按钮 480px 适配 */
    .top {
      bottom: 15px;
      right: 15px;
      width: 40px;
      height: 40px;
      box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
    }

    .top i {
      font-size: 1rem;
    }
  }

  @media (max-width: 360px) {
    :root {
      --big-font: 2rem;
      --h2-font: 1.5rem;
      --p-font: 0.85rem;
    }

    header {
      padding: 10px 2%;
    }

    .logo {
      font-size: 20px;
    }

    section {
      padding: 70px 2% 40px;
    }

    .home-text {
      left: 2%;
    }

    .about-text h2 {
      font-size: 1.5rem;
    }

    .services-content {
      gap: 1rem;
    }

    .box {
      padding: 1rem;
    }

    .box h3 {
      font-size: 1.1rem;
    }

    .read {
      padding: 8px 16px;
      font-size: 0.85rem;
    }
  }