/* ===== 全局重置 & 平滑滚动 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    background: #f5efe8;
    color: #2e2a24;
    font-weight: 300;
    line-height: 1.7;
    padding: 1.2rem 1.2rem 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 30% 20%, rgba(200, 180, 160, 0.06) 0%, transparent 60%),
        radial-gradient(circle at 80% 80%, rgba(180, 160, 140, 0.05) 0%, transparent 50%),
        repeating-linear-gradient(45deg, transparent, transparent 40px, rgba(200, 180, 160, 0.02) 40px, rgba(200, 180, 160, 0.02) 41px);
    pointer-events: none;
    z-index: 0;
}

.app {
    position: relative;
    z-index: 1;
    max-width: 1100px;
    margin: 4.2rem auto 0;
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* ===== 导航 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.8rem 1.5rem;
    padding: 0.6rem 1.8rem;
    background: rgba(245, 239, 232, 0.85);
    backdrop-filter: blur(12px);
    border-radius: 0;
    border: none;
    border-bottom: 1px solid rgba(180, 160, 140, 0.15);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    margin-bottom: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 1.8rem;
    color: #4f3e32;
    letter-spacing: 2px;
}

.logo i {
    color: #b18a6b;
    font-size: 1.5rem;
    margin-right: 0.2rem;
}

.nav-logo {
    height: 2rem;
    width: auto;
    vertical-align: middle;
    margin-right: 0.3rem;
    filter: drop-shadow(0 2px 4px rgba(79, 62, 50, 0.1));
}

.logo small {
    font-size: 0.7rem;
    font-weight: 300;
    color: #8a7a6a;
    letter-spacing: 3px;
    margin-left: 0.4rem;
}

.nav-links {
    display: flex;
    gap: 1.8rem;
    list-style: none;
    font-weight: 300;
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.nav-links a {
    color: #5f4d3c;
    text-decoration: none;
    transition: 0.3s;
    border-bottom: 2px solid transparent;
    padding-bottom: 0.15rem;
    letter-spacing: 1px;
}

.nav-links a:hover {
    color: #2e1f14;
    border-bottom-color: #b18a6b;
}

.nav-ip {
    background: rgba(180, 160, 140, 0.12);
    padding: 0.25rem 1.2rem 0.25rem 1.6rem;
    border-radius: 40px;
    font-size: 0.75rem;
    color: #5f4d3c;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    border: 1px solid rgba(180, 160, 140, 0.12);
}

.nav-ip i {
    color: #b18a6b;
}

.copy-btn {
    background: none;
    border: none;
    color: #8a7a6a;
    cursor: pointer;
    font-size: 0.8rem;
    transition: 0.3s;
    padding: 0 0.1rem;
}

.copy-btn:hover {
    color: #4f3e32;
    transform: scale(1.1);
}

#home,
#info,
#features,
#about {
    scroll-margin-top: 80px;
}

/* ===== 首屏 ===== */
.hero {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    align-items: center;
    padding: 1.5rem 0 0.5rem;
}

@media (max-width: 720px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

.hero-text .greeting {
    font-size: 0.8rem;
    letter-spacing: 4px;
    color: #b18a6b;
    text-transform: uppercase;
    font-weight: 300;
}

.hero-text h1 {
    font-size: clamp(3rem, 10vw, 5.2rem);
    color: #3d2e22;
    line-height: 1.1;
    letter-spacing: 4px;
    text-shadow: 3px 3px 0 rgba(200, 180, 160, 0.15);
    margin: 0.1rem 0;
}

.hero-text h1 i {
    color: #b18a6b;
    font-size: 0.7em;
    margin: 0 0.1rem;
}

.hero-text .sub {
    font-size: 1rem;
    font-weight: 300;
    color: #7a6a5a;
    letter-spacing: 5px;
    border-left: 3px solid #b18a6b;
    padding-left: 1rem;
    margin: 0.2rem 0 0.8rem;
}

.hero-text .highlight {
    background: rgba(180, 160, 140, 0.1);
    padding: 0.2rem 0.8rem;
    border-radius: 30px;
    display: inline-block;
    font-size: 0.9rem;
    color: #5f4d3c;
    border: 1px solid rgba(180, 160, 140, 0.1);
    margin-bottom: 0.8rem;
}

.hero-text .highlight i {
    color: #b18a6b;
    margin-right: 0.4rem;
}

.hero-text p {
    color: #5f4d3c;
    font-size: 0.95rem;
    max-width: 380px;
    line-height: 1.9;
    margin: 0.6rem 0 1.4rem;
}

.hero-text .btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.btn {
    padding: 0.4rem 1.8rem;
    border-radius: 60px;
    border: 1px solid rgba(180, 160, 140, 0.3);
    background: transparent;
    color: #4f3e32;
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 2px;
    cursor: pointer;
    transition: 0.4s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: #4f3e32;
    border-color: #4f3e32;
    color: #f5efe8;
}

.btn-primary:hover {
    background: #3d2e22;
    border-color: #3d2e22;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 62, 50, 0.15);
}

.btn-outline:hover {
    background: rgba(180, 160, 140, 0.08);
    border-color: #b18a6b;
    transform: translateY(-2px);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-visual .circle-bg {
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: radial-gradient(circle at 40% 30%, #e8ddd2, #d5c8bb);
    opacity: 0.3;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
}

.hero-visual .art {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    user-select: none;
}

.hero-visual .art img {
    width: 200px;
    height: 200px;
    object-fit: contain;
    filter: drop-shadow(0 8px 24px rgba(79, 62, 50, 0.12));
    transition: transform 0.4s ease;
}

.hero-visual .art img:hover {
    transform: scale(1.04);
}

@media (max-width: 720px) {
    .hero-visual .art img {
        width: 160px;
        height: 160px;
    }
}

.hero-visual .art i {
    font-size: 3rem;
    color: #c9b09b;
    opacity: 0.15;
    display: block;
    margin-top: -1rem;
}

/* ===== 服务器信息卡片 ===== */
.server-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
    margin: 1.8rem 0 2rem;
}

@media (max-width: 600px) {
    .server-info {
        grid-template-columns: 1fr;
    }
}

.info-card {
    background: rgba(255, 250, 245, 0.5);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(200, 180, 165, 0.12);
    padding: 1rem 1.5rem;
    border-radius: 20px 8px 20px 8px;
    transition: 0.3s;
}

.info-card:hover {
    background: rgba(255, 250, 245, 0.8);
    border-color: rgba(180, 160, 140, 0.2);
}

.info-card .label {
    font-size: 0.65rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: #8a7a6a;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.info-card .label i {
    color: #b18a6b;
    font-size: 0.8rem;
}

.info-card .value {
    font-size: 1rem;
    font-weight: 400;
    color: #3d2e22;
    margin-top: 0.1rem;
    word-break: break-all;
}

.info-card .value .tag {
    background: rgba(180, 160, 140, 0.1);
    padding: 0.05rem 0.6rem;
    border-radius: 30px;
    font-size: 0.7rem;
    color: #6a5a4a;
    margin-left: 0.4rem;
    border: 1px solid rgba(180, 160, 140, 0.05);
}

.info-card .value .copy-mini {
    background: none;
    border: none;
    color: #8a7a6a;
    cursor: pointer;
    font-size: 0.7rem;
    margin-left: 0.4rem;
    transition: 0.3s;
}

.info-card .value .copy-mini:hover {
    color: #4f3e32;
}

/* ===== 状态指示灯 ===== */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(180, 160, 140, 0.08);
    padding: 0.15rem 0.8rem 0.15rem 0.5rem;
    border-radius: 40px;
    font-size: 0.7rem;
    color: #6a5a4a;
    border: 1px solid rgba(180, 160, 140, 0.06);
    margin-left: 0.6rem;
}

.status-badge .dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #6f9e7a;
    animation: pulse-green 2s infinite;
}

.status-badge .dot.offline {
    background: #b08a7a;
    animation: none;
}

@keyframes pulse-green {
    0% {
        opacity: 0.4;
        transform: scale(0.9);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
    100% {
        opacity: 0.4;
        transform: scale(0.9);
    }
}

/* ===== 特色 ===== */
.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 1.5rem 0 2rem;
}

@media (max-width: 700px) {
    .features {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 450px) {
    .features {
        grid-template-columns: 1fr;
    }
}

.feature-item {
    background: rgba(255, 250, 245, 0.3);
    padding: 1.2rem 1.2rem;
    border-radius: 30px 6px 30px 6px;
    border: 1px solid rgba(200, 180, 165, 0.08);
    transition: 0.3s;
}

.feature-item:hover {
    background: rgba(255, 250, 245, 0.6);
    border-color: rgba(180, 160, 140, 0.15);
    transform: translateY(-3px);
}

.feature-item .icon {
    font-size: 1.6rem;
    color: #b18a6b;
    display: block;
    margin-bottom: 0.3rem;
}

.feature-item h4 {
    font-size: 1.2rem;
    font-weight: 400;
    color: #4f3e32;
    letter-spacing: 1px;
}

.feature-item p {
    color: #6a5a4a;
    font-size: 0.85rem;
    line-height: 1.7;
    margin-top: 0.1rem;
}

/* ===== 关于 ===== */
.about {
    margin: 1.5rem 0 1.8rem;
    padding: 1.8rem 2.2rem;
    background: rgba(255, 250, 245, 0.3);
    border-left: 5px solid #b18a6b;
    border-radius: 0 30px 0 30px;
    position: relative;
}

.about::before {
    content: '\201C';
    font-size: 4rem;
    color: #d9cdc0;
    position: absolute;
    top: -0.6rem;
    left: 0.8rem;
    opacity: 0.25;
}

.about h2 {
    font-size: 1.8rem;
    color: #3d2e22;
    letter-spacing: 3px;
    margin-bottom: 0.2rem;
}

.about p {
    color: #5f4d3c;
    font-size: 0.95rem;
    max-width: 650px;
    line-height: 2;
    font-weight: 300;
}

.about .badge {
    display: inline-block;
    background: rgba(180, 160, 140, 0.08);
    padding: 0.15rem 1rem;
    border-radius: 40px;
    font-size: 0.7rem;
    color: #6a5a4a;
    border: 1px solid rgba(180, 160, 140, 0.06);
    margin-top: 0.6rem;
    letter-spacing: 1px;
}

/* ===== 赞助商（古典风格） ===== */
.sponsor-plaque {
    margin: 1.8rem 0 1.5rem;
    padding: 1.6rem 2rem;
    background: linear-gradient(135deg, rgba(255, 250, 245, 0.5), rgba(245, 239, 232, 0.3));
    border: 1px solid rgba(180, 160, 140, 0.15);
    border-radius: 30px 6px 30px 6px;
    text-align: center;
    position: relative;
    transition: 0.3s;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.sponsor-plaque:hover {
    background: rgba(255, 250, 245, 0.7);
    border-color: rgba(180, 160, 140, 0.25);
}

/* 顶部装饰线 - 中式匾额效果 */
.sponsor-plaque::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0.6rem;
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent, #b18a6b, transparent);
}

/* 墨迹装饰 */
.sponsor-plaque::after {
    content: '';
    position: absolute;
    right: 1.5rem;
    bottom: 0.5rem;
    width: 50px;
    height: 50px;
    background: radial-gradient(circle, rgba(200, 180, 160, 0.08), transparent 70%);
    pointer-events: none;
}


.sponsor-plaque-logo {
    display: block;
    margin: 0 auto;
    max-width: 200px;
    max-height: 3.6rem;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 4px 12px rgba(79, 62, 50, 0.1));
}

.sponsor-plaque-name {
    display: block;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 400;
    color: #4f3e32;
    letter-spacing: 6px;
    line-height: 1.5;
    text-shadow: none;
    margin: 0.4rem 0 0.1rem;
    padding: 0;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: unset;
    background-clip: unset;
    background: none;
}

@media (max-width: 600px) {
    .sponsor-plaque-name {
        font-size: 0.95rem;
        letter-spacing: 2px;
    }
}

.sponsor-plaque-desc {
    display: block;
    text-align: center;
    font-size: 0.8rem;
    color: #6a5a4a;
    letter-spacing: 3px;
    font-weight: 300;
    margin-top: 0.2rem;
    line-height: 1.6;
}

@media (max-width: 600px) {
    .sponsor-plaque {
        padding: 1.2rem 1rem;
    }

    .sponsor-plaque-name {
        font-size: 2rem;
        letter-spacing: 8px;
    }

    .sponsor-plaque-desc {
        font-size: 0.75rem;
    }
}

/* ===== 社交 ===== */
.social {
    text-align: center;
    margin: 1rem 0 0.8rem;
    padding-top: 1.2rem;
    border-top: 1px solid rgba(180, 160, 140, 0.1);
}

.social .label {
    font-size: 0.7rem;
    letter-spacing: 5px;
    color: #8a7a6a;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1.8rem;
    margin-top: 0.6rem;
    flex-wrap: wrap;
}

.social-icons a {
    color: #8a7a6a;
    font-size: 1.3rem;
    transition: 0.3s;
}

.social-icons a:hover {
    color: #4f3e32;
    transform: translateY(-2px);
}

/* ===== 页脚 ===== */
.footer {
    text-align: center;
    font-size: 0.7rem;
    color: #8a7a6a;
    letter-spacing: 2px;
    padding: 1.2rem 0 0.5rem;
    border-top: 1px solid rgba(180, 160, 140, 0.06);
    margin-top: 0.5rem;
}

.footer i {
    color: #b18a6b;
    margin: 0 0.2rem;
}

.footer-copyright {
    margin-top: 0.4rem;
    font-size: 0.65rem;
    color: #9a8a7a;
    letter-spacing: 1px;
}

.footer-icp {
    margin-top: 0.15rem;
    font-size: 0.6rem;
}

.footer-icp a {
    color: #9a8a7a;
    text-decoration: none;
    transition: 0.3s;
}

.footer-icp a:hover {
    color: #6a5a4a;
}

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: #4f3e32;
    color: #f5efe8;
    padding: 0.4rem 1.8rem;
    border-radius: 60px;
    font-size: 0.8rem;
    letter-spacing: 1px;
    opacity: 0;
    transition: 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    pointer-events: none;
    z-index: 999;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 600px) {
    body {
        padding: 0.8rem 0.8rem 0;
    }

    .navbar {
        padding: 0.5rem 1rem;
    }
}

/* ===== 404 页面 ===== */
.page-404 {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 70vh;
    padding: 2rem 1.5rem;
}

.page-404 .code {
    font-size: clamp(6rem, 18vw, 10rem);
    color: rgba(180, 160, 140, 0.15);
    line-height: 1;
    letter-spacing: 8px;
    user-select: none;
    margin-bottom: -0.8rem;
}

.page-404 .divider {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #b18a6b, transparent);
    margin: 0.5rem auto 1rem;
}

.page-404 .msg {
    font-size: 2rem;
    color: #3d2e22;
    letter-spacing: 6px;
    margin-bottom: 0.3rem;
}

.page-404 .sub {
    font-size: 0.85rem;
    color: #7a6a5a;
    letter-spacing: 3px;
    font-weight: 300;
    margin-bottom: 1.5rem;
}

.page-404 .btn-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 2rem;
    border-radius: 60px;
    border: 1px solid rgba(180, 160, 140, 0.3);
    background: #4f3e32;
    color: #f5efe8;
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 2px;
    cursor: pointer;
    transition: 0.4s;
    text-decoration: none;
}

.page-404 .btn-back:hover {
    background: #3d2e22;
    border-color: #3d2e22;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 62, 50, 0.15);
}

.page-404 .btn-back i {
    font-size: 0.8rem;
}

@media (max-width: 600px) {
    .page-404 .msg {
        font-size: 1.5rem;
    }
}

    .logo {
        font-size: 1.4rem;
    }

    .nav-links {
        gap: 0.8rem;
        font-size: 0.8rem;
    }

    .nav-ip {
        font-size: 0.65rem;
        padding: 0.2rem 0.8rem;
    }

    .hero-text .sub {
        font-size: 0.85rem;
    }

    .info-card {
        padding: 0.8rem 1rem;
    }

    .info-card .value {
        font-size: 0.85rem;
    }

    .about {
        padding: 1.2rem;
    }

    .about h2 {
        font-size: 1.4rem;
    }
}