/* ============================================================ 顶部导航菜单 — 响应式 header 依赖：common.css（CSS 变量）、iconfont.css（图标字体）页面引入顺序：common.css → iconfont.css → header.css 重要：由于 header 是 fixed 定位，需在上加 padding-top 补偿高度，或在上加 class="has-fixed-header" ============================================================ */ /* 为 fixed header 预留空间 */ body.has-fixed-header { padding-top: 4rem; } @media screen and (max-width: 768px) { body.has-fixed-header { padding-top: 3.5rem; } } @media screen and (max-width: 440px) { body.has-fixed-header { padding-top: 3.25rem; } } /* ---------- 导航容器 ---------- */ .moki-header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: linear-gradient(180deg, rgba(91,164,197,0.5), rgba(88,159,192,0.5), rgba(82,153,188,0.5)); background-color: rgba(0, 0, 0, 0.9); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(123, 187, 189, 0.15); transition: background 0.3s ease, box-shadow 0.3s ease; } .moki-header.scrolled { background: linear-gradient(180deg, rgba(91,164,197,0.5), rgba(88,159,192,0.5), rgba(82,153,188,0.5)); box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5); } /* ---------- 等宽即可，和项目其他 .container 保持一致 ---------- */ .moki-header .container { display: flex; align-items: center; justify-content: space-between; height: 4rem; max-width: 1600px; margin: 0 auto; padding: 0 2.5rem; } /* ---------- Logo ---------- */ .moki-header .logo { flex-shrink: 0; display: flex; align-items: center; gap: 0.5rem; font-size: 1.35rem; font-weight: 700; color: #fff; letter-spacing: 0.08em; text-decoration: none; transition: opacity 0.25s; } .moki-header .logo:hover { opacity: 0.85; } .moki-header .logo-img { height: 2rem; width: auto; display: block; } .moki-header .logo-text-accent { color: var(--moki-accent); } /* ---------- 主导航列表 ---------- */ .moki-header .nav-list { display: flex; align-items: center; gap: 0.25rem; list-style: none; margin: 0; padding: 0; } /* ---------- 一级菜单项 ---------- */ .moki-header .nav-item { position: relative; } .moki-header .nav-link { display: flex; align-items: center; gap: 0.3rem; padding: 0.55rem 0.9rem; font-size: 0.9rem; color: #ccc; text-decoration: none; white-space: nowrap; border-radius: 0.35rem; transition: color 0.25s, background 0.25s; cursor: pointer; } .moki-header .nav-link:hover, .moki-header .nav-link.active { color: var(--moki-accent); text-decoration-line: underline; text-decoration-color: var(--moki-accent); text-decoration-thickness: 2px; text-decoration-style: solid; text-underline-offset: 0.5rem; } /* 一级菜单展开状态 */ .moki-header .nav-item.open > .nav-link { color: var(--moki-accent); } /* 一级菜单箭头 */ .moki-header .nav-arrow { display: inline-block; font-size: 0.6rem; color: inherit; transition: transform 0.25s; visibility: hidden; } .moki-header .nav-item.open > .nav-link .nav-arrow { transform: rotate(180deg); } /* ---------- 二级下拉菜单 ---------- */ .moki-header .dropdown { position: absolute; top: calc(50% + 2rem); left: 50%; min-width: 12.5rem; padding: 0.5rem 0; background: linear-gradient(-180deg, rgba(91,164,197,0.5), rgba(88,159,192,0.5), rgba(82,153,188,0.5)); background-color: rgba(20, 25, 30, 0.97); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-radius: 0 0 0.5rem 0.5rem; box-shadow: 0 8px 32px rgba(0, 0, 0, 0.55); opacity: 0; visibility: hidden; transform: translate(-50%, -1rem); transition: opacity 0.25s, visibility 0.25s, transform 0.25s; list-style: none; margin: 0; } .moki-header .nav-item.open > .dropdown { opacity: 1; visibility: visible; left: 50%; transform: translate(-50%, 0); } /* 下拉菜单项 */ .moki-header .dropdown .sub-link { display: block; padding: 0.75rem 1rem; font-size: 1rem; color: #bbb; text-decoration: none; transition: color 0.2s, background 0.2s, padding-left 0.2s; text-align: center; white-space: nowrap; border-radius: 1.2rem; margin: 1rem; } .moki-header .dropdown .sub-link:hover { color: #fff; background: linear-gradient(180deg, rgba(68, 144, 173, 0.5), rgba(66, 138, 168, 0.5), rgba(122, 191, 198, 0.7)); } /* ---------- 右侧操作区 ---------- */ .moki-header .header-actions { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; margin-left: 1rem; } /* 搜索图标 SVG */ .moki-header .search-svg { display: block; color: inherit; } /* 搜索图标按钮 */ .moki-header .btn-icon { display: flex; align-items: center; justify-content: center; width: 2.25rem; height: 2.25rem; border: none; background: transparent; color: #ccc; font-size: 1.1rem; border-radius: 0.35rem; cursor: pointer; transition: color 0.25s, background 0.25s; } .moki-header .btn-icon:hover { color: var(--moki-accent); background: rgba(123, 187, 189, 0.1); } /* 语言切换按钮 */ .moki-header .btn-lang { display: flex; align-items: center; gap: 0.3rem; padding: 0.45rem 0.75rem; border: 1px solid rgba(123, 187, 189, 0.35); background: transparent; color: #ccc; font-size: 0.85rem; border-radius: 0.35rem; cursor: pointer; transition: color 0.25s, border-color 0.25s, background 0.25s; } .moki-header .btn-lang:hover { color: var(--moki-accent); border-color: var(--moki-accent); background: rgba(123, 187, 189, 0.08); } .moki-header .btn-lang .lang-icon { font-size: 1rem; } /* ---------- 移动端汉堡菜单按钮 ---------- */ .moki-header .hamburger { display: none; flex-direction: column; justify-content: center; align-items: center; width: 2.25rem; height: 2.25rem; border: none; background: transparent; cursor: pointer; gap: 5px; padding: 0; } .moki-header .hamburger .line { display: block; width: 1.25rem; height: 2px; background: #ccc; border-radius: 1px; transition: transform 0.3s, opacity 0.3s; transform-origin: center; } /* 展开状态：X 形 */ .moki-header .hamburger.open .line:nth-child(1) { transform: translateY(7px) rotate(45deg); } .moki-header .hamburger.open .line:nth-child(2) { opacity: 0; } .moki-header .hamburger.open .line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); } /* ---------- 搜索弹窗 ---------- */ .search-overlay { position: fixed; inset: 0; z-index: 2000; background: rgba(0, 0, 0, 0.7); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); display: flex; align-items: flex-start; justify-content: center; padding-top: 20vh; opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s; } .search-overlay.active { opacity: 1; visibility: visible; } .search-overlay .search-box { display: flex; align-items: center; width: min(90vw, 37.5rem); background: rgba(20, 25, 30, 0.97); border: 1px solid rgba(123, 187, 189, 0.25); border-radius: 0.5rem; padding: 0.6rem 1rem; gap: 0.6rem; transform: translateY(-10px); transition: transform 0.3s; } .search-overlay .search-box .search-svg { color: #888; flex-shrink: 0; } .search-overlay.active .search-box { transform: translateY(0); } .search-overlay .search-input { flex: 1; background: transparent; border: none; outline: none; color: #fff; font-size: 1rem; font-family: inherit; } .search-overlay .search-input::placeholder { color: #888; } .search-overlay .search-close { background: none; border: none; color: #ccc; font-size: 1.1rem; cursor: pointer; line-height: 1; transition: color 0.25s; } .search-overlay .search-close:hover { color: var(--moki-accent); } /* ============================================================ 移动端覆层导航 ============================================================ */ .mobile-nav-overlay { position: fixed; inset: 0; top: 4rem; z-index: 999; background: rgba(0, 0, 0, 0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); overflow-y: auto; opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s; } .mobile-nav-overlay.active { opacity: 1; visibility: visible; } /* 移动端一级菜单 */ .mobile-nav-overlay .mobile-nav-list { list-style: none; margin: 0; padding: 0.75rem 0; } .mobile-nav-overlay .mobile-nav-item { border-bottom: 1px solid rgba(123, 187, 189, 0.08); } .mobile-nav-overlay .mobile-nav-link { display: flex; align-items: center; justify-content: space-between; padding: 1rem 2rem; font-size: 0.95rem; color: #ccc; text-decoration: none; transition: color 0.2s, background 0.2s; } .mobile-nav-overlay .mobile-nav-link:hover { color: var(--moki-accent); background: rgba(123, 187, 189, 0.05); } .mobile-nav-overlay .mobile-nav-link .mobile-arrow { font-size: 0.65rem; transition: transform 0.25s; } .mobile-nav-overlay .mobile-nav-item.open > .mobile-nav-link .mobile-arrow { transform: rotate(180deg); } /* 移动端二级菜单 */ .mobile-nav-overlay .mobile-sub-list { list-style: none; margin: 0; padding: 0; background: rgba(123, 187, 189, 0.04); max-height: 0; overflow: hidden; transition: max-height 0.35s ease; } .mobile-nav-overlay .mobile-nav-item.open > .mobile-sub-list { max-height: 30rem; } .mobile-nav-overlay .mobile-sub-list .sub-link { display: block; padding: 0.75rem 2rem 0.75rem 3rem; font-size: 0.85rem; color: #999; text-decoration: none; transition: color 0.2s, background 0.2s; } .mobile-nav-overlay .mobile-sub-list .sub-link:hover { color: var(--moki-accent); background: rgba(123, 187, 189, 0.05); } /* 移动端底部操作区 */ .mobile-nav-overlay .mobile-actions { display: flex; align-items: center; gap: 0.75rem; padding: 1rem 2rem; border-top: 1px solid rgba(123, 187, 189, 0.1); } .mobile-nav-overlay .mobile-actions .btn-lang { padding: 0.45rem 0.75rem; border: 1px solid rgba(123, 187, 189, 0.35); background: transparent; color: #ccc; font-size: 0.85rem; border-radius: 0.35rem; cursor: pointer; display: flex; align-items: center; gap: 0.3rem; transition: color 0.25s, border-color 0.25s; } .mobile-nav-overlay .mobile-actions .btn-lang:hover { color: var(--moki-accent); border-color: var(--moki-accent); } /* ============================================================ 响应式断点 ============================================================ */ /* 小桌面 / 横屏平板：缩小间距 */ @media screen and (max-width: 1200px) { .moki-header .container { padding: 0 1.5rem; } .moki-header .nav-link { padding: 0.5rem 0.55rem; font-size: 0.82rem; } .moki-header .dropdown { min-width: 11rem; } .moki-header .dropdown .sub-link { font-size: 0.8rem; padding: 0.55rem 1rem; } } /* 平板竖屏 / 大屏手机：切换为汉堡菜单 */ @media screen and (max-width: 1024px) { .moki-header .nav-list { display: none; } .moki-header .hamburger { display: flex; } .moki-header .header-actions { gap: 0.25rem; } } @media screen and (max-width: 768px) { .moki-header .container { padding: 0 1.25rem; height: 3.5rem; } .moki-header .logo { font-size: 1.15rem; } .mobile-nav-overlay { top: 3.5rem; } .mobile-nav-overlay .mobile-nav-link { padding: 0.9rem 1.5rem; font-size: 0.9rem; } .mobile-nav-overlay .mobile-sub-list .sub-link { padding: 0.7rem 1.5rem 0.7rem 2.5rem; } .mobile-nav-overlay .mobile-actions { padding: 1rem 1.5rem; } } @media screen and (max-width: 440px) { .moki-header .container { padding: 0 1rem; height: 3.25rem; } .moki-header .logo { font-size: 1.05rem; } .mobile-nav-overlay { top: 3.25rem; } .moki-header .btn-lang { padding: 0.35rem 0.55rem; font-size: 0.78rem; } }