/* ============================================================
   A7验证 — 浅色设计系统 (从 api-doc.html / buy.html 提取合并)
   用于：/pricing /sdk /blog /blog/* 等浅色内容页
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: #f5f7fa;
    color: #333;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* ===== 头部（渐变紫） ===== */
.header {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    padding: 56px 0 44px;
    text-align: center;
}
.header h1 {
    font-size: 32px;
    font-weight: 800;
    margin: 0;
    letter-spacing: -0.5px;
}
.header p {
    font-size: 15px;
    opacity: .9;
    margin-top: 10px;
}
.header .header-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.15);
    font-size: 0.82rem;
    margin-bottom: 16px;
}

/* ===== 容器 ===== */
.container-main {
    max-width: 940px;
    margin: 0 auto;
    padding: 28px 16px 48px;
}

/* ===== 面包屑 ===== */
.breadcrumb-nav { background: #eef1f8; border-bottom: 1px solid #e3e8f0; }
.breadcrumb-nav .breadcrumb {
    max-width: 940px;
    margin: 0 auto;
    padding: 14px 16px;
    background: transparent;
    font-size: 0.85rem;
}
.breadcrumb-nav .breadcrumb-item a { color: #667eea; text-decoration: none; }
.breadcrumb-nav .breadcrumb-item a:hover { text-decoration: underline; }
.breadcrumb-nav .breadcrumb-item.active { color: #888; }

/* ===== 卡片 ===== */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, .05);
    margin-bottom: 20px;
    overflow: hidden;
}
.card-header {
    background: #fff;
    padding: 16px 20px;
    border-bottom: 1px solid #f0f0f0;
    font-weight: 700;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.card-header i { color: #667eea; font-size: 20px; }
.card-body { padding: 20px; background: #fff; }

/* ===== 代码块 ===== */
.code-block {
    background: #1e293b;
    border-radius: 10px;
    padding: 20px;
    color: #e2e8f0;
    font-family: "SF Mono", Consolas, monospace;
    font-size: 13px;
    line-height: 1.8;
    overflow-x: auto;
    position: relative;
    margin: 8px 0;
    white-space: pre-wrap;
    word-break: break-all;
}
.code-block .c { color: #64748b; }
.code-block .s { color: #a5d6a7; }
.code-block .k { color: #82aaff; }
.code-block .f { color: #ffd54f; }
.code-block .n { color: #f78c6c; }
.copy-btn {
    position: absolute;
    top: 8px;
    right: 12px;
    background: rgba(255, 255, 255, .08);
    border: none;
    color: #ccc;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
}
.copy-btn:hover { background: rgba(255, 255, 255, .15); }

.method-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    margin-right: 6px;
}
.method-post { background: #e8f5e9; color: #2e7d32; }
.method-get { background: #e3f2fd; color: #1565c0; }
.endpoint { font-family: Consolas, monospace; font-size: 14px; color: #555; }

/* ===== 参数表 ===== */
.param-table { width: 100%; font-size: 13px; margin: 8px 0; }
.param-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #555;
    padding: 10px 12px;
    font-size: 12px;
    letter-spacing: .5px;
    text-align: left;
    border-bottom: 2px solid #eee;
}
.param-table td {
    padding: 10px 12px;
    vertical-align: middle;
    border-top: 1px solid #f0f0f0;
}
.param-table code {
    background: #f5f5f5;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 12px;
    color: #667eea;
}

/* ===== 响应块 ===== */
.resp-ok {
    background: #f8fdf8;
    border: 1px solid #d4edda;
    border-radius: 8px;
    padding: 14px 18px;
    font-family: Consolas, monospace;
    font-size: 13px;
    color: #155724;
    line-height: 1.7;
    margin: 8px 0;
    white-space: pre-wrap;
}
.resp-err {
    background: #fef8f8;
    border: 1px solid #f5c6cb;
    border-radius: 8px;
    padding: 14px 18px;
    font-family: Consolas, monospace;
    font-size: 13px;
    color: #721c24;
    line-height: 1.7;
    margin: 8px 0;
    white-space: pre-wrap;
}

/* ===== 流程 ===== */
.step-flow { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; justify-content: center; padding: 12px 0; }
.step-item { text-align: center; padding: 12px; background: #f8f9fa; border-radius: 10px; min-width: 100px; }
.step-item .step-num {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: #667eea;
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 4px;
}
.step-item .step-label { font-size: 12px; font-weight: 600; color: #333; }
.step-arrow { color: #ccc; font-size: 18px; }

/* ===== 目录 TOC ===== */
.toc { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; margin: 0; }
.toc li a {
    display: inline-block;
    padding: 4px 14px;
    background: #eef1ff;
    color: #667eea;
    border-radius: 16px;
    font-size: 13px;
    text-decoration: none;
    transition: all .2s;
}
.toc li a:hover { background: #667eea; color: #fff; }

/* ===== 返回/链接 ===== */
.nav-back { text-align: center; padding: 16px; }
.nav-back a { color: #667eea; font-weight: 500; }

/* ===== 页脚 ===== */
.footer {
    text-align: center;
    padding: 28px 16px;
    color: #bbb;
    font-size: 12px;
    background: #2a2f45;
    color: #c8ccd8;
}
.footer a { color: #c8ccd8; text-decoration: none; }
.footer a:hover { color: #fff; }
.footer .footer-links { margin-bottom: 12px; }
.footer .footer-links a { display: inline-block; margin: 0 10px; font-size: 13px; }

/* ===== 小标题/徽标 ===== */
.section-title { font-weight: 700; font-size: 15px; color: #555; margin: 16px 0 8px; }
.badge-required { display: inline-block; background: #ffebee; color: #c62828; padding: 1px 8px; border-radius: 3px; font-size: 10px; font-weight: 700; margin-left: 4px; }
.badge-optional { display: inline-block; background: #e8e5e5; color: #666; padding: 1px 8px; border-radius: 3px; font-size: 10px; margin-left: 4px; }

/* ===== 段落排版 ===== */
.article-body { font-size: 15px; color: #344; line-height: 1.95; }
.article-body h2 { font-size: 24px; font-weight: 800; color: #1a1f36; margin: 36px 0 16px; letter-spacing: -0.3px; }
.article-body h3 { font-size: 19px; font-weight: 700; color: #2a2f45; margin: 28px 0 12px; }
.article-body p { margin-bottom: 16px; }
.article-body ul, .article-body ol { margin: 0 0 16px 22px; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: #667eea; text-decoration: none; }
.article-body a:hover { text-decoration: underline; }
.article-body strong { color: #1a1f36; }

/* ===== FAQ ===== */
.faq-item {
    background: #fff;
    border: 1px solid #eef0f5;
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 14px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, .04);
}
.faq-item h4 { font-size: 16px; font-weight: 700; color: #1a1f36; margin: 0 0 10px; }
.faq-item p { font-size: 14px; color: #556; margin: 0; line-height: 1.85; }
.faq-item p a { color: #667eea; }

/* ===== 对比/功能矩阵表 ===== */
.compare-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid #e6e9f2;
    border-radius: 12px;
    overflow: hidden;
    background: #fff;
    margin: 8px 0 16px;
}
.compare-table th, .compare-table td {
    padding: 14px 16px;
    font-size: 14px;
    text-align: left;
    border-bottom: 1px solid #f0f2f7;
    vertical-align: middle;
}
.compare-table thead th {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    font-weight: 700;
    border-bottom: none;
}
.compare-table tbody th { background: #fafbff; color: #334; font-weight: 600; width: 24%; }
.compare-table td { color: #556; }
.compare-table tr:last-child th, .compare-table tr:last-child td { border-bottom: none; }
.compare-table .yes { color: #2e7d32; font-weight: 700; }
.compare-table .no { color: #c62828; font-weight: 700; }
.compare-table .partial { color: #e65100; font-weight: 600; }
.compare-table .ours { color: #2e7d32; font-weight: 700; }

/* ===== 内链卡片 ===== */
.inner-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
    margin: 16px 0;
}
.inner-link-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    background: #fff;
    border: 1px solid #e6e9f2;
    border-radius: 12px;
    text-decoration: none;
    transition: all .2s;
    box-shadow: 0 2px 10px rgba(0, 0, 0, .04);
}
.inner-link-card:hover { border-color: #667eea; transform: translateY(-3px); box-shadow: 0 8px 24px rgba(102, 126, 234, .15); text-decoration: none; }
.inner-link-card .il-icon {
    width: 42px; height: 42px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem;
    background: #eef1ff;
    color: #667eea;
    flex-shrink: 0;
}
.inner-link-card .il-title { color: #1a1f36; font-weight: 700; font-size: 15px; }
.inner-link-card .il-desc { color: #99a; font-size: 12px; }

/* ===== 价格套餐卡片 ===== */
.price-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 18px;
    margin: 24px 0;
}
.price-card {
    background: #fff;
    border: 1px solid #e6e9f2;
    border-radius: 16px;
    padding: 28px 22px;
    position: relative;
    transition: all .25s;
    box-shadow: 0 2px 12px rgba(0, 0, 0, .05);
}
.price-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(102, 126, 234, .18); }
.price-card.featured {
    border-color: #667eea;
    box-shadow: 0 12px 40px rgba(102, 126, 234, .25);
}
.price-card .plan-name { font-size: 18px; font-weight: 800; color: #1a1f36; }
.price-card .plan-tag {
    position: absolute; top: 18px; right: 18px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff; font-size: 11px; font-weight: 700;
    padding: 3px 10px; border-radius: 20px;
}
.price-card .plan-price { font-size: 34px; font-weight: 900; color: #1a1f36; margin: 14px 0 2px; }
.price-card .plan-price .unit { font-size: 14px; font-weight: 500; color: #99a; }
.price-card .plan-note { font-size: 12px; color: #f5a623; margin-bottom: 16px; }
.price-card .plan-feats { list-style: none; padding: 0; margin: 0 0 20px; }
.price-card .plan-feats li { font-size: 13px; color: #556; padding: 7px 0; border-bottom: 1px dashed #eef0f5; display: flex; gap: 8px; }
.price-card .plan-feats li i { color: #2e7d32; }
.price-card .btn-plan {
    display: block; text-align: center;
    padding: 11px; border-radius: 10px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff; font-weight: 700; font-size: 14px;
    text-decoration: none; transition: all .2s;
}
.price-card .btn-plan:hover { opacity: .92; color: #fff; text-decoration: none; }
.price-card .btn-plan.outline { background: #fff; border: 1px solid #667eea; color: #667eea; }

/* ===== 套餐价格卡片（plan-* 类，pricing/index.html 使用）===== */
.plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin: 28px 0;
}
.plan-card {
    background: #fff;
    border: 1px solid #e6e9f2;
    border-radius: 16px;
    padding: 32px 24px;
    position: relative;
    transition: all .25s;
    box-shadow: 0 2px 12px rgba(0, 0, 0, .05);
}
.plan-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(102, 126, 234, .18); }
.plan-card.featured {
    border-color: #667eea;
    box-shadow: 0 12px 40px rgba(102, 126, 234, .25);
}
.plan-flag {
    position: absolute; top: -1px; left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff; font-size: 11px; font-weight: 700;
    padding: 4px 16px; border-radius: 0 0 10px 10px;
    letter-spacing: .5px;
}
.plan-name { font-size: 20px; font-weight: 800; color: #1a1f36; margin-bottom: 12px; }
.plan-price { font-size: 38px; font-weight: 900; color: #1a1f36; margin: 16px 0 4px; line-height: 1; }
.plan-price .unit { font-size: 16px; font-weight: 600; color: #99a; }
.plan-period { font-size: 13px; color: #99a; margin-bottom: 18px; }
.plan-feat { list-style: none; padding: 0; margin: 0 0 22px; }
.plan-feat li { font-size: 14px; color: #556; padding: 8px 0; border-bottom: 1px dashed #eef0f5; display: flex; align-items: center; gap: 6px; }
.plan-feat li:last-child { border-bottom: none; }
.plan-cta {
    display: block; text-align: center; padding: 12px; border-radius: 10px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff; font-weight: 700; font-size: 14px;
    text-decoration: none; transition: all .2s;
}
.plan-cta:hover { opacity: .92; color: #fff; text-decoration: none; transform: translateY(-1px); }
.plan-cta-outline { background: #fff; border: 1px solid #667eea; color: #667eea; }
.plan-cta-outline:hover { background: rgba(102, 126, 234, .06); }

/* 价格页对比表 */
.table-light-themed { width: 100%; border-collapse: collapse; }
.table-light-themed th,
.table-light-themed td { padding: 12px 16px; border: 1px solid #eef0f5; font-size: 14px; text-align: center; }
.table-light-themed th { background: #f7f8fc; font-weight: 700; color: #1a1f36; }
.table-light-themed td { color: #556; }
.table-light-themed th.col-feature, .table-light-themed td.col-feature { text-align: left; font-weight: 600; color: #1a1f36; width: 30%; }
.table-light-themed td.col-self { background: rgba(102, 126, 234, .04); color: #667eea; font-weight: 700; }
.table-light-themed td.yes { color: #2e7d32; font-weight: 700; }
.table-light-themed td.no { color: #ccc; }
.table-light-themed td.partial { color: #f5a623; }

/* 价格页通用补充 */
.note-box { background: #fef9e7; border: 1px solid #f5d87a; border-radius: 10px; padding: 14px 18px; font-size: 13px; color: #856404; margin-top: 16px; display: flex; gap: 8px; align-items: flex-start; }
.note-box i { color: #f5a623; flex-shrink: 0; margin-top: 2px; }

/* ===== SDK 语言卡片 ===== */
.lang-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
    margin: 24px 0;
}
.lang-card {
    background: #fff;
    border: 1px solid #e6e9f2;
    border-radius: 14px;
    padding: 24px;
    transition: all .2s;
    box-shadow: 0 2px 10px rgba(0, 0, 0, .04);
}
.lang-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(102, 126, 234, .14); }
.lang-card .lang-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.lang-card .lang-logo {
    width: 44px; height: 44px; border-radius: 12px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; flex-shrink: 0;
}
.lang-card .lang-name { font-size: 17px; font-weight: 800; color: #1a1f36; }
.lang-card .lang-ver { font-size: 12px; color: #99a; }
.lang-card .lang-desc { font-size: 13px; color: #667; margin-bottom: 16px; line-height: 1.7; }
.lang-card .lang-btns { display: flex; gap: 10px; }
.lang-card .btn-lang {
    flex: 1; text-align: center; padding: 9px; border-radius: 9px;
    font-size: 13px; font-weight: 700; text-decoration: none; transition: all .2s;
}
.btn-lang.primary { background: linear-gradient(135deg, #667eea, #764ba2); color: #fff; }
.btn-lang.primary:hover { opacity: .92; color: #fff; text-decoration: none; }
.btn-lang.ghost { background: #eef1ff; color: #667eea; }
.btn-lang.ghost:hover { background: #e0e6ff; color: #667eea; text-decoration: none; }

/* ===== 更新日志时间线 ===== */
.timeline { position: relative; padding-left: 28px; margin: 16px 0; }
.timeline::before {
    content: ''; position: absolute; left: 8px; top: 6px; bottom: 6px;
    width: 2px; background: #e0e4f0;
}
.timeline-item { position: relative; padding-bottom: 22px; }
.timeline-item::before {
    content: ''; position: absolute; left: -24px; top: 6px;
    width: 12px; height: 12px; border-radius: 50%;
    background: #667eea; border: 2px solid #fff; box-shadow: 0 0 0 2px #667eea;
}
.timeline-item .tl-date { font-size: 13px; font-weight: 700; color: #667eea; }
.timeline-item .tl-title { font-size: 15px; font-weight: 700; color: #1a1f36; margin: 2px 0 4px; }
.timeline-item .tl-desc { font-size: 13px; color: #667; }

/* ===== 博客聚合卡片 ===== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
    margin: 24px 0;
}
.blog-card {
    background: #fff;
    border: 1px solid #e6e9f2;
    border-radius: 14px;
    padding: 24px;
    text-decoration: none;
    transition: all .2s;
    box-shadow: 0 2px 10px rgba(0, 0, 0, .04);
    display: block;
}
.blog-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(102, 126, 234, .14); text-decoration: none; }
.blog-card .bc-tag {
    display: inline-block; font-size: 11px; font-weight: 700;
    color: #667eea; background: #eef1ff; padding: 3px 10px; border-radius: 20px; margin-bottom: 12px;
}
.blog-card .bc-title { font-size: 17px; font-weight: 800; color: #1a1f36; margin-bottom: 10px; line-height: 1.4; }
.blog-card .bc-excerpt { font-size: 13px; color: #667; line-height: 1.7; }
.blog-card .bc-more { margin-top: 14px; font-size: 13px; font-weight: 700; color: #667eea; }

/* ===== 浅色页通用（pricing/sdk/blog 等共用）===== */
.light-header {
    background: linear-gradient(135deg, #f7f8fc 0%, #eef1f8 100%);
    padding: 72px 0 48px; text-align: center;
    border-bottom: 1px solid #e6e9f2;
}
.light-header .hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 18px; border-radius: 50px;
    background: rgba(102, 126, 234, .08); border: 1px solid rgba(102, 126, 234, .15);
    font-size: 13px; color: #667eea; margin-bottom: 16px;
    font-weight: 600;
}
.light-header h1 { font-size: 32px; font-weight: 900; color: #1a1f36; margin-bottom: 12px; letter-spacing: -.5px; }
.light-header .subtitle { font-size: 17px; color: #667; max-width: 520px; margin: 0 auto; }
.section-label-light { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: #667eea; margin-bottom: 10px; padding: 5px 14px; border-radius: 50px; background: rgba(102, 126, 234, .08); border: 1px solid rgba(102, 126, 234, .15); }
.section-title-light { font-size: 28px; font-weight: 800; color: #1a1f36; letter-spacing: -.5px; margin-bottom: 10px; text-align: center; }
.section-desc-light { font-size: 15px; color: #99a; max-width: 550px; margin: 0 auto 36px; text-align: center; }

/* CTA */
.cta-light { text-align: center; padding: 64px 0; background: linear-gradient(135deg, rgba(102, 126, 234, .04), rgba(118, 75, 162, .04)); border-radius: 20px; margin-top: 40px; }
.cta-light h2 { font-size: 26px; font-weight: 800; color: #1a1f36; margin-bottom: 10px; }
.cta-light p { color: #667; font-size: 15px; margin-bottom: 24px; }
.cta-light .btn-group { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-primary { display: inline-flex; align-items: center; gap: 8px; padding: 13px 30px; border-radius: 50px; background: linear-gradient(135deg, #667eea, #764ba2); color: #fff; font-weight: 700; font-size: 15px; text-decoration: none; transition: all .25s; box-shadow: 0 4px 20px rgba(102, 126, 234, .25); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 36px rgba(102, 126, 234, .4); color: #fff; text-decoration: none; }
.btn-outline { display: inline-flex; align-items: center; gap: 8px; padding: 13px 30px; border-radius: 50px; border: 1px solid rgba(102, 126, 234, .3); color: #667eea; font-weight: 700; font-size: 15px; text-decoration: none; transition: all .25s; }
.btn-outline:hover { background: rgba(102, 126, 234, .06); color: #667eea; text-decoration: none; }

/* 浅色页脚 */
.footer-light { background: #f7f8fc; border-top: 1px solid #e6e9f2; padding: 40px 0 24px; }
.footer-light .fl-links { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: center; margin-bottom: 18px; }
.footer-light .fl-links a { color: #667; font-size: 13px; text-decoration: none; transition: color .2s; }
.footer-light .fl-links a:hover { color: #667eea; text-decoration: none; }
.footer-light .copyright { text-align: center; font-size: 12px; color: #bbb; padding-top: 16px; border-top: 1px solid #eef0f5; }
.footer-light .copyright a { color: #bbb; }

/* FAQ 折叠 */
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item-light { background: #fff; border: 1px solid #eef0f5; border-radius: 12px; overflow: hidden; transition: all .25s; }
.faq-item-light .faq-q { padding: 16px 18px; cursor: pointer; font-weight: 700; font-size: 15px; color: #1a1f36; display: flex; align-items: center; justify-content: space-between; user-select: none; }
.faq-item-light .faq-q i { transition: transform .3s; color: #667eea; font-size: 18px; }
.faq-item-light.open .faq-q i { transform: rotate(45deg); }
.faq-item-light .faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease-out; }
.faq-item-light.open .faq-a { max-height: 400px; }
.faq-item-light .faq-a-inner { padding: 0 18px 16px; font-size: 14px; color: #556; line-height: 1.75; }

/* 内链卡片 */
.link-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; max-width: 720px; margin: 24px auto 0; }
.link-card { display: flex; align-items: center; gap: 14px; padding: 18px 20px; background: #fff; border: 1px solid #eef0f5; border-radius: 12px; text-decoration: none; transition: all .2s; }
.link-card:hover { border-color: #667eea; transform: translateY(-3px); box-shadow: 0 8px 24px rgba(102, 126, 234, .12); text-decoration: none; }
.link-card i { font-size: 28px; color: #667eea; flex-shrink: 0; }
.link-card .lc-title { font-size: 15px; font-weight: 700; color: #1a1f36; }
.link-card .lc-sub { font-size: 12px; color: #99a; }

/* 容器扩展 */
.container-wide { max-width: 1100px; margin-left: auto; margin-right: auto; padding-left: 20px; padding-right: 20px; }

/* ===== 响应式 ===== */
@media (max-width: 767px) {
    .header { padding: 40px 0 32px; }
    .header h1 { font-size: 24px; }
    .container-main { padding: 20px 14px 40px; }
    .price-grid, .plan-grid, .lang-grid, .blog-grid { grid-template-columns: 1fr; }
    .compare-table { font-size: 12px; }
    .compare-table th, .compare-table td { padding: 10px 10px; }
}