/*
#	Project: Youtem - 优天网络官方网站
#	This is NOT a freeware, use is subject to license terms.
#	Website: https://youtem.com
#	Author: Youtem Dev Team
#	Copyright (C) 2026 Youtem. All Rights Reserved.
*/

:root {
    --primary-color: #002FA7;
    --primary-dark: #00268a;
    --secondary-color: #6b7385;
    --accent-color: #3f64d7;
    --dark-bg: #0f1320;
    --light-bg: #f7f8fa;
    --klein-nav-h: 72px;
    --klein-muted: #8a93a6;
    --klein-chip: #f2f3f5;
}

body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--light-bg);
    color: #1c2130;
}

a { text-decoration: none; }
a:hover { text-decoration: none; }

/* ===== Klein 顶栏 ===== */
.klein-navbar.navbar {
    background: #fff;
    border-bottom: 1px solid #eceef3;
    box-shadow: none;
    padding: 0;
    min-height: 72px;
    z-index: 1030;
    overflow: visible;
    position: sticky;
}

.klein-nav-inner {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    position: relative;
}

.klein-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    color: #111 !important;
    text-decoration: none !important;
}

.klein-brand-logo {
    display: block;
    height: 48px;
    width: auto;
    max-width: 260px;
    object-fit: contain;
}

.klein-brand-mark {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: #002FA7;
    color: #fff;
    font-size: 15px;
    font-weight: 760;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: -0.04em;
    box-shadow: 0 2px 8px rgba(0, 47, 167, 0.28);
}

.klein-brand-text {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #111;
}

.klein-toggler {
    border: 1px solid #e5e8ef;
    border-radius: 8px;
    padding: 0.4rem 0.55rem;
}

.klein-nav-collapse {
    flex-grow: 1;
}

.klein-nav-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    width: 100%;
    margin-left: auto;
}

/* 搜索胶囊 */
.klein-search {
    position: relative;
    display: flex;
    align-items: center;
    width: 220px;
    height: 36px;
    background: var(--klein-chip);
    border-radius: 999px;
    padding: 0 12px 0 34px;
    border: 1px solid transparent;
    transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
    margin-right: 8px;
}

.klein-search:focus-within {
    background: #fff;
    border-color: rgba(0, 47, 167, 0.28);
    box-shadow: 0 0 0 3px rgba(0, 47, 167, 0.08);
}

.klein-search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--klein-muted);
    font-size: 1rem;
    pointer-events: none;
}

.klein-search-input {
    flex: 1;
    border: 0;
    outline: 0;
    background: transparent;
    font-size: 0.875rem;
    color: #1c2130;
    min-width: 0;
    height: 100%;
}

.klein-search-input::placeholder {
    color: var(--klein-muted);
}

.klein-search-kbd {
    flex-shrink: 0;
    font-family: inherit;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--klein-muted);
    background: #fff;
    border: 1px solid #e5e8ef;
    border-radius: 5px;
    padding: 1px 6px;
    line-height: 1.4;
}

/* 导航菜单 */
.klein-nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 2px;
}

.klein-nav-item {
    position: static;
}

.klein-nav-link {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 8px 12px;
    border-radius: 8px;
    color: #1c2130 !important;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none !important;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
}

.klein-nav-link:hover,
.klein-nav-link:focus,
.klein-nav-link:focus-visible,
.klein-nav-link:active,
.klein-nav-item.is-active > .klein-nav-link,
.klein-nav-item.show > .klein-nav-link {
    background: var(--klein-chip);
    color: #111 !important;
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
}

.klein-nav-menu .klein-nav-link.dropdown-toggle::after {
    display: none !important;
}

.klein-navbar .klein-nav-link:focus,
.klein-navbar a:focus,
.klein-navbar button:focus {
    outline: none !important;
    box-shadow: none !important;
}

.klein-nav-caret {
    font-size: 1rem;
    color: var(--klein-muted);
    transition: transform 0.2s;
}

.klein-nav-item.show > .klein-nav-link .klein-nav-caret,
.klein-nav-link[aria-expanded="true"] .klein-nav-caret {
    transform: rotate(180deg);
}

/* Mega 面板 */
.klein-mega-panel.dropdown-menu {
    position: absolute !important;
    left: 0 !important;
    right: 0 !important;
    top: 100% !important;
    width: 100% !important;
    max-width: none !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    border-radius: 0 !important;
    border-top: 1px solid #eceef3 !important;
    background: #fff !important;
    box-shadow: 0 16px 40px rgba(15, 19, 32, 0.08) !important;
    transform: none !important;
    inset: auto 0 auto 0 !important;
}

.klein-mega-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 28px 24px 32px;
}

.klein-mega-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.klein-mega-title {
    margin: 0 0 18px;
    font-size: 1rem;
    font-weight: 700;
    color: #111;
    letter-spacing: -0.01em;
}

.klein-mega-head .klein-mega-title {
    margin-bottom: 0;
}

.klein-mega-more {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    font-size: 0.8125rem;
    font-weight: 560;
    color: #002FA7;
    text-decoration: none !important;
}

.klein-mega-more:hover {
    color: #00268a;
}

.klein-mega-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 28px;
    align-items: stretch;
}

.klein-mega-item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-sizing: border-box;
    width: 240px;
    height: 56px;
    min-width: 240px;
    max-width: 240px;
    min-height: 56px;
    max-height: 56px;
    padding: 10px 12px;
    border-radius: 10px;
    color: #1c2130 !important;
    text-decoration: none !important;
    transition: background 0.15s;
    overflow: hidden;
}

.klein-mega-item:hover,
.klein-mega-item.active {
    background: #f7f8fa;
}

.klein-mega-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: #002FA7;
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.15rem;
}

.klein-mega-name {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 0.9375rem;
    font-weight: 520;
    color: #1c2130;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.klein-mega-tag {
    flex-shrink: 0;
    max-width: 72px;
    margin-left: 4px;
    font-size: 0.7rem;
    font-weight: 560;
    color: var(--klein-muted);
    background: var(--klein-chip);
    border-radius: 999px;
    padding: 2px 8px;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.klein-mega-loading {
    color: var(--klein-muted);
    font-size: 0.875rem;
    padding: 8px 0;
}

/* 右侧操作 */
.klein-nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 8px;
    flex-shrink: 0;
}

.klein-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 34px;
    padding: 0 14px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 560;
    text-decoration: none !important;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.klein-btn-outline {
    color: #002FA7 !important;
    background: transparent;
    border: 1px solid #002FA7;
}

.klein-btn-outline:hover {
    color: #fff !important;
    background: #002FA7;
    border-color: #002FA7;
}

.klein-btn-primary {
    color: #fff !important;
    background: #002FA7;
    border: 1px solid #002FA7;
}

.klein-btn-primary:hover {
    background: #00268a;
    border-color: #00268a;
}

.klein-user-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 8px;
    color: #1c2130 !important;
    font-size: 0.875rem;
    font-weight: 520;
    text-decoration: none !important;
}

.klein-user-toggle:hover {
    background: var(--klein-chip);
}

.klein-user-toggle i:first-child {
    font-size: 1.25rem;
    color: #002FA7;
}

.klein-user-menu {
    font-size: 0.875rem;
    border: 1px solid #eceef3;
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(15, 19, 32, 0.08);
    padding: 6px;
    min-width: 180px;
}

.klein-user-menu .dropdown-item {
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
}

.klein-user-menu .dropdown-item:hover {
    background: #eef1fb;
    color: #002FA7;
}

.klein-user-menu .dropdown-item i {
    margin-right: 6px;
}

/* Bootstrap 兼容覆盖 */
.btn-primary {
    background: var(--primary-color);
    border-color: var(--primary-color);
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}
.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}
.btn-outline-primary:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

/* 冒泡背景（页面其它区块仍可能使用） */
.bubble-bg { position: relative; overflow: hidden; }
.bubble-bg .bubbles {
    position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 0;
}
.bubble-bg .bubble {
    position: absolute; bottom: -50px;
    background: rgba(255, 255, 255, 0.25);
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    animation: bubble-rise 12s infinite ease-out;
}
.bubble-bg > *:not(.bubbles) { position: relative; z-index: 1; }
@keyframes bubble-rise {
    0% { transform: translateY(0) scale(1); opacity: 0.8; }
    100% { transform: translateY(-500px) scale(0.6); opacity: 0; }
}

/* 响应式 */
@media (max-width: 991.98px) {
    .klein-nav-inner {
        flex-wrap: wrap;
        padding: 10px 16px;
        min-height: 64px;
    }
    .klein-brand-logo {
        height: 40px;
        max-width: 200px;
    }
    .klein-nav-collapse {
        width: 100%;
        flex-basis: 100%;
    }
    .klein-nav-collapse.show,
    .klein-nav-collapse.collapsing {
        display: block !important;
    }
    .klein-nav-right {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px 0 16px;
    }
    .klein-search {
        width: 100%;
        margin-right: 0;
    }
    .klein-nav-menu {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }
    .klein-nav-link {
        justify-content: space-between;
        width: 100%;
    }
    .klein-mega-panel.dropdown-menu {
        position: static !important;
        width: 100% !important;
        max-width: 100% !important;
        box-shadow: none !important;
        border: 1px solid #eceef3 !important;
        border-radius: 10px !important;
        margin-top: 6px !important;
    }
    .klein-mega-inner {
        padding: 16px;
    }
    .klein-mega-grid {
        gap: 4px;
    }
    .klein-mega-item {
        width: 100%;
        min-width: 0;
        max-width: 100%;
        height: 56px;
        min-height: 56px;
        max-height: 56px;
        overflow: hidden;
    }
    .klein-nav-actions {
        margin-left: 0;
        justify-content: flex-end;
    }
}

@media (min-width: 992px) {
    .klein-navbar .navbar-collapse {
        display: flex !important;
        flex-basis: auto;
    }
    .klein-toggler {
        display: none;
    }
}

@media (max-width: 1100px) and (min-width: 992px) {
    .klein-search {
        width: 168px;
    }
    .klein-search-kbd {
        display: none;
    }
}