/* ========== 密度云科官网 前台样式（DeepSeek 极简风格） ========== */
:root {
    --color-text: #1a1a1a;
    --color-text-light: #666;
    --color-text-lighter: #999;
    --color-bg: #ffffff;
    --color-accent: #9cc1e7;
    --color-border: #eee;
    --color-border-dark: #ddd;
    --max-width: 1200px;
    --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); color: var(--color-text); background: var(--color-bg); line-height: 1.75; }
a { color: inherit; text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-accent); }
img { max-width: 100%; height: auto; }
ul, ol { list-style: none; }

/* ========== 容器 ========== */
.front-container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ========== 导航 ========== */
.front-nav { position: sticky; top: 0; z-index: 100; background: #fff; border-bottom: 1px solid var(--color-border); }
.front-nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.front-logo { font-size: 1.3rem; font-weight: 700; color: var(--color-text); letter-spacing: 2px; }
.front-menu { display: flex; gap: 36px; }
.front-menu a { font-size: 0.95rem; color: var(--color-text-light); font-weight: 500; }
.front-menu a:hover { color: var(--color-text); }
.front-nav-member { display: flex; align-items: center; gap: 16px; font-size: 0.85rem; }
.front-nav-member a { color: var(--color-text-light); }
.front-nav-member a:hover { color: var(--color-text); }
.front-member-name { color: var(--color-accent); font-weight: 600; }

/* ========== 导航栏会员下拉 ========== */
.member-dropdown { position: relative; display: flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.member-avatar { width: 32px; height: 32px; border-radius: 50%; border: 2px solid #fff; box-shadow: 0 0 0 1px var(--color-border-dark); object-fit: cover; flex-shrink: 0; }
.member-name { color: var(--color-text); font-weight: 600; font-size: 0.85rem; white-space: nowrap; }
.member-dropdown-menu { display: none !important; position: absolute; top: calc(100% + 8px); right: 0; background: #fff; border: 1px solid var(--color-border); border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,0.12); min-width: 140px; padding: 6px 0; z-index: 9999; }
.member-dropdown-menu.show { display: block !important; }
.member-dropdown-menu a { display: block; padding: 8px 20px; color: var(--color-text-light); font-size: 0.85rem; transition: all 0.15s; }
.member-dropdown-menu a:hover { background: #f5f5f5; color: var(--color-text); }

/* ========== Hero ========== */
.front-hero { text-align: center; padding: 100px 24px 80px; }
.front-hero h1 { font-size: 2.8rem; font-weight: 700; color: var(--color-text); margin-bottom: 20px; letter-spacing: -0.5px; }
.front-hero p { font-size: 1.1rem; color: var(--color-text-light); max-width: 680px; margin: 0 auto 36px; }
.front-hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.front-btn { display: inline-block; padding: 12px 32px; border-radius: 8px; font-size: 0.95rem; font-weight: 600; transition: all 0.2s; cursor: pointer; border: none; }
.front-btn-primary { background: var(--color-text); color: #fff; }
.front-btn-primary:hover { background: #333; color: #fff; }
.front-btn-outline { background: transparent; color: var(--color-text); border: 1px solid var(--color-border-dark); }
.front-btn-outline:hover { border-color: var(--color-text); color: var(--color-text); }
.front-btn-accent { background: var(--color-accent); color: #fff; }
.front-btn-accent:hover { opacity: 0.85; color: #fff; }

/* ========== 通用区块 ========== */
.front-section { padding: 72px 0; }
.front-section-title { text-align: center; font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
.front-section-subtitle { text-align: center; color: var(--color-text-light); font-size: 1rem; margin-bottom: 48px; }

/* ========== 功能卡片 ========== */
.front-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.front-card { background: #fff; border: 1px solid var(--color-border); border-radius: 12px; padding: 32px; transition: box-shadow 0.2s; }
.front-card:hover { box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.front-card-icon { font-size: 2rem; color: var(--color-accent); margin-bottom: 16px; }
.front-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 8px; }
.front-card p { color: var(--color-text-light); font-size: 0.9rem; margin-bottom: 16px; }
.front-card ul { padding-left: 0; }
.front-card ul li { position: relative; padding-left: 20px; color: var(--color-text-light); font-size: 0.875rem; margin-bottom: 8px; }
.front-card ul li::before { content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); }

/* ========== 三步引导 ========== */
.front-steps { display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; }
.front-step { text-align: center; max-width: 240px; }
.front-step-num { width: 48px; height: 48px; border-radius: 50%; background: var(--color-text); color: #fff; font-size: 1.2rem; font-weight: 700; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.front-step h3 { font-size: 1.1rem; margin-bottom: 8px; }
.front-step p { color: var(--color-text-light); font-size: 0.875rem; }

/* ========== 最新动态 ========== */
.front-news-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.front-news-item { border: 1px solid var(--color-border); border-radius: 12px; overflow: hidden; transition: box-shadow 0.2s; }
.front-news-item:hover { box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.front-news-cover { width: 100%; height: 180px; object-fit: contain; background: #f5f5f5; }
.front-news-body { padding: 20px; }
.front-news-date { font-size: 0.8rem; color: var(--color-text-lighter); margin-bottom: 8px; }
.front-news-title { font-size: 1rem; font-weight: 600; margin-bottom: 8px; line-height: 1.5; }
.front-news-summary { font-size: 0.85rem; color: var(--color-text-light); line-height: 1.6; }
.front-more-link { text-align: center; margin-top: 40px; }
.front-more-link a { display: inline-block; color: var(--color-accent); font-weight: 600; }

/* ========== 产品列表 ========== */
.front-product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.front-product-card { border: 1px solid var(--color-border); border-radius: 12px; padding: 32px; text-align: center; transition: box-shadow 0.2s; }
.front-product-card:hover { box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.front-product-icon { font-size: 2.5rem; color: var(--color-accent); margin-bottom: 16px; height: 160px; display: flex; align-items: center; justify-content: center; background: #f5f5f5; border-radius: 8px; }
.front-product-cover { width: 100%; height: 160px; object-fit: contain; background: #f5f5f5; border-radius: 8px; margin-bottom: 16px; }
.front-product-name { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
.front-product-subtitle { color: var(--color-text-light); font-size: 0.9rem; margin-bottom: 16px; }
.front-product-tag { display: inline-block; padding: 4px 12px; border-radius: 4px; background: #f5f5f5; color: var(--color-text-light); font-size: 0.75rem; }

/* ========== 详情页 ========== */
.front-detail { max-width: 800px; margin: 0 auto; padding: 48px 24px; }
.front-detail h1 { font-size: 2.2rem; font-weight: 700; margin-bottom: 16px; }
.front-detail-meta { color: var(--color-text-lighter); font-size: 0.875rem; margin-bottom: 32px; }
.front-detail-content { font-size: 1rem; line-height: 1.8; }
.front-detail-content h2 { font-size: 1.5rem; font-weight: 600; margin: 32px 0 16px; }
.front-detail-content h3 { font-size: 1.2rem; font-weight: 600; margin: 24px 0 12px; }
.front-detail-content p { margin-bottom: 16px; color: var(--color-text); }
.front-detail-content ul { margin-bottom: 16px; padding-left: 0; }
.front-detail-content ul li { position: relative; padding-left: 20px; margin-bottom: 8px; }
.front-detail-content ul li::before { content: ""; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); }
.front-detail-content img { border-radius: 8px; margin: 16px 0; }

/* ========== 面包屑 ========== */
.front-breadcrumb { max-width: var(--max-width); margin: 0 auto; padding: 24px; color: var(--color-text-lighter); font-size: 0.85rem; }
.front-breadcrumb a { color: var(--color-text-light); }
.front-breadcrumb span { margin: 0 8px; }

/* ========== FAQ ========== */
.front-faq { max-width: 800px; margin: 0 auto; padding: 48px 24px; }
.front-faq h2 { text-align: center; font-size: 1.8rem; margin-bottom: 32px; }
.front-faq-item { border-bottom: 1px solid var(--color-border); padding: 20px 0; }
.front-faq-q { font-weight: 600; font-size: 1rem; margin-bottom: 8px; cursor: pointer; }
.front-faq-a { color: var(--color-text-light); font-size: 0.9rem; line-height: 1.7; }

/* ========== 反馈表单 ========== */
.front-form { max-width: 560px; margin: 0 auto; padding: 48px 24px; }
.front-form-group { margin-bottom: 24px; }
.front-form-label { display: block; font-weight: 600; margin-bottom: 8px; }
.front-form-input, .front-form-textarea { width: 100%; padding: 12px 16px; border: 1px solid var(--color-border-dark); border-radius: 8px; font-size: 0.95rem; font-family: var(--font-sans); transition: border-color 0.2s; }
.front-form-input:focus, .front-form-textarea:focus { outline: none; border-color: var(--color-accent); }
.front-form-textarea { resize: vertical; min-height: 120px; }
.front-form-tip { text-align: center; color: var(--color-text-light); margin-top: 16px; }

/* ========== 上一篇/下一篇 ========== */
.front-prev-next { display: flex; justify-content: space-between; gap: 24px; margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--color-border); }
.front-prev-next a { color: var(--color-text-light); font-size: 0.9rem; }
.front-prev-next a:hover { color: var(--color-accent); }

/* ========== 分页 ========== */
.front-pagination { display: flex; justify-content: center; gap: 8px; margin-top: 48px; }
.front-pagination a, .front-pagination span { padding: 8px 16px; border: 1px solid var(--color-border); border-radius: 6px; font-size: 0.875rem; color: var(--color-text-light); }
.front-pagination .active { background: var(--color-text); color: #fff; border-color: var(--color-text); }

/* ========== 页脚 ========== */
.front-footer { background: #fff; border-top: 1px solid var(--color-border); padding: 64px 0 32px; margin-top: 80px; }
.front-footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.front-footer-brand { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
.front-footer-slogan { color: var(--color-text-light); font-size: 0.875rem; }
.front-footer-col h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 16px; }
.front-footer-col a, .front-footer-col span { display: block; color: var(--color-text-light); font-size: 0.85rem; margin-bottom: 10px; }
.front-footer-col a:hover { color: var(--color-accent); }
.front-footer-bottom { display: flex; justify-content: space-between; padding-top: 24px; border-top: 1px solid var(--color-border); color: var(--color-text-lighter); font-size: 0.8rem; }
.front-footer-bottom a { color: var(--color-text-lighter); }
.front-footer-bottom a:hover { color: var(--color-accent); }

/* ========== 404 ========== */
.front-404 { text-align: center; padding: 120px 24px; }
.front-404 h1 { font-size: 4rem; font-weight: 700; margin-bottom: 16px; }
.front-404 p { color: var(--color-text-light); margin-bottom: 32px; }

/* ========== 论坛 ========== */
.forum-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; flex-wrap: wrap; gap: 16px; }
.forum-categories { display: flex; gap: 8px; flex-wrap: wrap; }
.forum-categories a { display: inline-block; padding: 6px 16px; border-radius: 6px; font-size: 0.875rem; color: var(--color-text-light); border: 1px solid var(--color-border); transition: all 0.2s; }
.forum-categories a:hover { color: var(--color-text); border-color: var(--color-border-dark); }
.forum-categories a.active { background: var(--color-text); color: #fff; border-color: var(--color-text); }

.forum-topic-list { }
.forum-topic-item { border: 1px solid var(--color-border); border-radius: 12px; margin-bottom: 16px; transition: box-shadow 0.2s; }
.forum-topic-item:hover { box-shadow: 0 4px 24px rgba(0,0,0,0.06); }
.forum-topic-link { display: block; padding: 24px; }
.forum-topic-main { }
.forum-topic-tags { display: flex; gap: 8px; margin-bottom: 8px; }
.forum-tag { display: inline-block; padding: 2px 10px; border-radius: 4px; font-size: 0.75rem; font-weight: 600; }
.forum-tag-top { background: #e74c3c; color: #fff; }
.forum-tag-essence { background: #f39c12; color: #fff; }
.forum-tag-category { background: #f5f5f5; color: var(--color-text-light); }
.forum-topic-title { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; line-height: 1.5; }
.forum-topic-meta { display: flex; gap: 16px; color: var(--color-text-lighter); font-size: 0.8rem; flex-wrap: wrap; }
.forum-empty { text-align: center; padding: 64px 24px; }
.forum-empty p { color: var(--color-text-light); margin-bottom: 24px; }

.forum-detail-tags { display: flex; gap: 8px; margin-bottom: 12px; }
.forum-topic-content { font-size: 1rem; line-height: 1.8; color: var(--color-text); margin-top: 16px; }
.forum-topic-content img { max-width: 100%; height: auto; border-radius: 8px; margin: 12px 0; }
.forum-topic-content p { margin: 8px 0; }
.forum-topic-content ul, .forum-topic-content ol { margin: 8px 0; padding-left: 24px; }
.forum-topic-content pre { background: #f5f5f5; border-radius: 6px; padding: 12px; overflow-x: auto; }
.forum-topic-content blockquote { border-left: 3px solid var(--color-accent); padding-left: 16px; margin: 12px 0; color: var(--color-text-light); }

.forum-reply-list { margin-bottom: 48px; }
.forum-reply-item { display: flex; gap: 16px; padding: 24px 0; border-bottom: 1px solid var(--color-border); }
.forum-reply-avatar { flex-shrink: 0; width: 40px; height: 40px; border-radius: 50%; background: var(--color-accent); color: #fff; font-size: 1rem; font-weight: 700; display: flex; align-items: center; justify-content: center; }
.forum-reply-body { flex: 1; min-width: 0; }
.forum-reply-meta { display: flex; gap: 12px; align-items: center; margin-bottom: 8px; font-size: 0.8rem; color: var(--color-text-lighter); }
.forum-reply-nickname { font-weight: 600; color: var(--color-text-light); }
.forum-reply-floor { color: var(--color-accent); }
.forum-reply-content { font-size: 0.95rem; line-height: 1.7; color: var(--color-text); }
.forum-reply-content img { max-width: 100%; height: auto; border-radius: 8px; margin: 8px 0; }
.forum-reply-content p { margin: 4px 0; }
.forum-reply-btn-reply { display: inline-block; margin-top: 8px; font-size: 0.8rem; color: var(--color-text-lighter); cursor: pointer; }
.forum-reply-btn-reply:hover { color: var(--color-accent); }
.forum-reply-form { background: #fafafa; border-radius: 12px; padding: 32px; margin-top: 32px; }

.forum-sub-reply-area { margin-left: 56px; margin-top: 12px; }
.forum-sub-reply-list { }
.forum-sub-reply-children { margin-left: 24px; padding-left: 12px; border-left: 2px solid var(--color-border); margin-top: 8px; }
.forum-sub-reply-item { padding: 8px 0; }
.forum-sub-reply-meta { display: flex; gap: 6px; align-items: center; font-size: 0.82rem; color: var(--color-text-lighter); margin-bottom: 2px; flex-wrap: wrap; }
.forum-sub-reply-nickname { font-weight: 600; color: var(--color-text-light); }
.forum-sub-reply-arrow { color: var(--color-text-lighter); font-size: 0.75rem; }
.forum-sub-reply-to { color: var(--color-accent); font-weight: 600; }
.forum-sub-reply-time { color: var(--color-text-lighter); font-size: 0.72rem; margin-left: auto; }
.forum-sub-reply-content { font-size: 0.88rem; line-height: 1.6; color: var(--color-text); }
.forum-sub-reply-content img { max-width: 100%; height: auto; border-radius: 6px; }
.forum-sub-reply-content p { margin: 2px 0; }
.forum-sub-reply-more { display: inline-block; margin-top: 6px; font-size: 0.8rem; color: var(--color-accent); cursor: pointer; }
.forum-sub-reply-more:hover { text-decoration: underline; }
.forum-sub-reply-more.expanded { color: var(--color-text-lighter); }
.forum-sub-reply-form { margin: 8px 0; padding: 12px; background: #f7f8fa; border-radius: 8px; }
.forum-sub-reply-form .front-form-input { margin-bottom: 8px; }
.sub-reply-editor { margin-bottom: 8px; }

/* ========== Summernote 编辑器样式修复 ========== */
.tooltip { position: absolute; z-index: 1070; display: block; font-size: 12px; line-height: 1.4; opacity: 0; }
.tooltip.in { opacity: 0.9; }
.tooltip.top { padding: 5px 0; margin-top: -3px; }
.tooltip.bottom { padding: 5px 0; margin-top: 3px; }
.tooltip.left { padding: 0 5px; margin-left: -3px; }
.tooltip.right { padding: 0 5px; margin-left: 3px; }
.tooltip-inner { max-width: 200px; padding: 3px 8px; color: #fff; text-align: center; background-color: #000; border-radius: 4px; }
.tooltip-arrow { position: absolute; width: 0; height: 0; border-color: transparent; border-style: solid; }
.tooltip.top .tooltip-arrow { bottom: 0; left: 50%; margin-left: -5px; border-width: 5px 5px 0; border-top-color: #000; }
.tooltip.bottom .tooltip-arrow { top: 0; left: 50%; margin-left: -5px; border-width: 0 5px 5px; border-bottom-color: #000; }
.tooltip.left .tooltip-arrow { top: 50%; right: 0; margin-top: -5px; border-width: 5px 0 5px 5px; border-left-color: #000; }
.tooltip.right .tooltip-arrow { top: 50%; left: 0; margin-top: -5px; border-width: 5px 5px 5px 0; border-right-color: #000; }
.note-editor .note-btn { display: inline-block; padding: 5px 10px; margin-bottom: 0; font-size: 14px; font-weight: normal; line-height: 1.42857; text-align: center; white-space: nowrap; vertical-align: middle; cursor: pointer; border: 1px solid #ccc; border-radius: 4px; background-color: #fff; color: #333; }
.note-editor .note-btn:hover { background-color: #ebebeb; border-color: #adadad; }
.note-editor .note-btn.active, .note-editor .note-btn:active { background-color: #d4d4d4; border-color: #8c8c8c; }
.note-editor .note-btn-group { display: inline-block; position: relative; }
.note-editor .note-dropdown-menu { display: none; position: absolute; z-index: 1000; min-width: 160px; padding: 5px 0; margin: 2px 0 0; list-style: none; font-size: 14px; text-align: left; background-color: #fff; border: 1px solid #ccc; border-radius: 4px; box-shadow: 0 6px 12px rgba(0,0,0,0.175); }
.note-editor .note-dropdown-menu > a { display: block; padding: 3px 20px; clear: both; font-weight: normal; line-height: 1.42857; color: #333; white-space: nowrap; }
.note-editor .note-dropdown-menu > a:hover { background-color: #f5f5f5; color: #262626; text-decoration: none; }
.note-editor .open > .note-dropdown-menu { display: block; }
.note-editor .note-btn-group.open .note-btn { background-color: #ebebeb; border-color: #adadad; }
.note-editor .note-editable { font-size: 14px; line-height: 1.42857; color: #333; }
.note-editor .note-editable p { margin: 0 0 10px; }
.note-editor .note-editable ul, .note-editor .note-editable ol { margin: 0 0 10px; padding-left: 40px; }
.note-editor .note-editable h1, .note-editor .note-editable h2, .note-editor .note-editable h3 { margin: 10px 0; font-weight: 600; }
.note-editor img { max-width: 100%; height: auto; }
.note-modal { display: none; position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: 1050; overflow: hidden; }
.note-modal.open { display: block; }
.note-modal .note-modal-dialog { position: relative; width: 500px; margin: 30px auto; background: #fff; border-radius: 5px; box-shadow: 0 5px 15px rgba(0,0,0,0.5); }
.note-modal .note-modal-header { padding: 10px 15px; border-bottom: 1px solid #e5e5e5; display: flex; justify-content: space-between; align-items: center; }
.note-modal .note-modal-header h4 { margin: 0; font-size: 16px; font-weight: 600; }
.note-modal .note-modal-body { padding: 15px; }
.note-modal .note-modal-footer { padding: 10px 15px; border-top: 1px solid #e5e5e5; text-align: right; }
.note-modal .note-modal-footer .note-btn { margin-left: 5px; }
.note-modal .note-modal-body .form-group { margin-bottom: 15px; }
.note-modal .note-modal-body .form-group label { display: inline-block; max-width: 100%; margin-bottom: 5px; font-weight: 700; }
.note-modal .note-modal-body .form-control { display: block; width: 100%; padding: 6px 12px; font-size: 14px; line-height: 1.42857; color: #555; background-color: #fff; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; }
.note-modal .close { float: right; font-size: 21px; font-weight: 700; line-height: 1; color: #000; cursor: pointer; opacity: 0.2; }
.note-modal .close:hover { opacity: 0.5; }
.note-modal .note-image-input { display: block; width: 100%; padding: 6px 12px; font-size: 14px; line-height: 1.42857; color: #555; background-color: #fff; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; }
.note-popover .popover-content .note-btn, .note-popover .popover-content .note-btn-group { display: inline-block; }
.note-popover .popover-content .note-btn { padding: 4px 8px; border: 1px solid #ccc; border-radius: 4px; background: #fff; cursor: pointer; }
.note-popover .popover-content .note-btn:hover { background: #ebebeb; }

/* ========== 个人中心 ========== */
.profile-page { max-width: 640px; margin: 0 auto; padding: 48px 24px; }
.profile-avatar-section { text-align: center; margin-bottom: 40px; }
.profile-avatar-large { width: 120px; height: 120px; border-radius: 50%; border: 3px solid var(--color-border); object-fit: cover; cursor: pointer; transition: border-color 0.2s; }
.profile-avatar-large:hover { border-color: var(--color-accent); }
.profile-avatar-tip { color: var(--color-text-lighter); font-size: 0.8rem; margin-top: 8px; }
.profile-section { background: #fff; border: 1px solid var(--color-border); border-radius: 12px; padding: 32px; margin-bottom: 24px; }
.profile-section h2 { font-size: 1.2rem; font-weight: 600; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--color-border); }
.profile-row { display: flex; align-items: center; margin-bottom: 20px; gap: 16px; }
.profile-label { width: 70px; flex-shrink: 0; color: var(--color-text-light); font-size: 0.9rem; text-align: right; }
.profile-value { flex: 1; min-width: 0; }
.profile-input { width: 100%; padding: 10px 16px; border: 1px solid var(--color-border-dark); border-radius: 8px; font-size: 0.9rem; font-family: var(--font-sans); box-sizing: border-box; }
.profile-input:focus { outline: none; border-color: var(--color-accent); }
.profile-input:read-only { background: #f5f5f5; color: var(--color-text-lighter); cursor: not-allowed; }
.profile-btn { display: inline-block; padding: 10px 32px; border-radius: 8px; font-size: 0.9rem; font-weight: 600; background: var(--color-text); color: #fff; border: none; cursor: pointer; transition: background 0.2s; }
.profile-btn:hover { background: #333; }

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .front-menu { gap: 20px; }
    .front-menu a { font-size: 0.85rem; }
    .front-hero { padding: 60px 24px 48px; }
    .front-hero h1 { font-size: 2rem; }
    .front-hero p { font-size: 0.95rem; }
    .front-cards, .front-news-row, .front-product-grid { grid-template-columns: 1fr; }
    .front-steps { gap: 32px; }
    .front-section { padding: 48px 0; }
    .front-section-title { font-size: 1.5rem; }
    .front-footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .front-footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .front-prev-next { flex-direction: column; }
    .member-name { display: none; }
    .profile-row { flex-direction: column; align-items: flex-start; gap: 6px; }
    .profile-label { width: auto; text-align: left; }
    .profile-section { padding: 20px; }
}