/* ============================================================
   站点首页主题 —— 与后台/用户中心统一设计 Token
   白色卡片风 · 圆角 ≤5px · 响应式（768px 断点）
   ============================================================ */

:root {
    --admin-primary: #1666ff;
    --admin-primary-deep: #0e51d6;
    --admin-primary-soft: rgba(22, 102, 255, 0.07);
    --admin-success: #12a652;
    --admin-warning: #e8830c;
    --admin-danger:  #e3403f;
    --admin-bg: #f6f7f9;
    --admin-card: #ffffff;
    --admin-border: #e7e9ee;
    --admin-border-light: #eef0f4;
    --admin-text-title: #1c2330;
    --admin-text-body: #454d5c;
    --admin-text-muted: #8b93a3;
    --radius: 4px;
    --radius-sm: 3px;
    --shadow: 0 1px 2px rgba(28, 35, 48, 0.04);
    --shadow-hover: 0 2px 4px rgba(28, 35, 48, 0.05), 0 8px 20px rgba(28, 35, 48, 0.07);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-io: cubic-bezier(0.65, 0, 0.35, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    font-size: 14px;
    color: var(--admin-text-body);
    background: var(--admin-bg);
    -webkit-font-smoothing: antialiased;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}

/* ============ 入场动画（错落） ============ */
.anim { animation: rise-in 0.55s var(--ease) both; animation-delay: calc(var(--d, 0) * 90ms); }
@keyframes rise-in {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============ 顶部导航 ============ */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--admin-border);
}
.nav-inner {
    max-width: 1120px;
    margin: 0 auto;
    height: 56px;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 22px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark .layui-icon { font-size: 16px; }
.brand b { color: var(--admin-text-title); font-size: 15px; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    color: var(--admin-text-body);
    text-decoration: none;
    font-size: 13.5px;
    transition: background 0.2s, color 0.2s;
}
.nav-link:hover { background: #f4f5f8; color: var(--admin-primary); }
.nav-links-actions { display: none; }

.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav-user {
    display: flex; align-items: center; gap: 8px;
    text-decoration: none;
    padding: 5px 10px 5px 5px;
    border: 1px solid var(--admin-border);
    border-radius: var(--radius);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.nav-user:hover { border-color: var(--admin-primary); box-shadow: 0 0 0 3px rgba(22, 102, 255, 0.08); }
.nav-user .avatar {
    width: 26px; height: 26px;
    border-radius: var(--radius-sm);
    background: var(--admin-primary-soft);
    color: var(--admin-primary);
    display: grid; place-items: center;
    font-size: 12px; font-weight: 700;
}
.nav-user span { font-size: 13px; color: var(--admin-text-title); }

.nav-burger {
    display: none;
    margin-left: auto;
    width: 34px; height: 34px;
    border: 1px solid var(--admin-border);
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--admin-text-body);
    cursor: pointer;
    font-size: 16px;
}
.hero-cta { margin-top: 30px; display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.hero-cta .layui-btn { border-radius: var(--radius-sm); }

/* ============ 区块通用 ============ */
.section { padding: 64px 0; }
.section-alt { background: #fff; border-top: 1px solid var(--admin-border-light); border-bottom: 1px solid var(--admin-border-light); }
.section-inner { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.sec-title { font-size: 24px; font-weight: 700; color: var(--admin-text-title); text-align: center; }
.sec-sub { margin: 8px 0 34px; font-size: 13.5px; color: var(--admin-text-muted); text-align: center; }

/* ============ 特性卡片（layui 栅格：手机 1 列 / 平板 2 列 / 桌面 4 列） ============ */
.feat-row [class*="layui-col-"] { display: flex; }
.feat-row .feat-card { flex: 1; width: 100%; }
.feat-card {
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius);
    padding: 22px 20px;
    box-shadow: var(--shadow);
    transition: box-shadow 0.3s, transform 0.3s var(--ease);
}
.feat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.feat-ico {
    width: 42px; height: 42px;
    border-radius: var(--radius);
    display: grid; place-items: center;
    font-size: 18px;
    margin-bottom: 14px;
}
.feat-ico.c-blue   { background: rgba(22, 102, 255, 0.09);  color: var(--admin-primary); }
.feat-ico.c-green  { background: rgba(18, 166, 82, 0.09);   color: var(--admin-success); }
.feat-ico.c-orange { background: rgba(232, 131, 12, 0.10); color: var(--admin-warning); }
.feat-ico.c-red    { background: rgba(227, 64, 63, 0.08);  color: var(--admin-danger); }
.feat-card b { display: block; font-size: 15px; color: var(--admin-text-title); margin-bottom: 7px; }
.feat-card p { font-size: 12.5px; line-height: 1.8; color: var(--admin-text-muted); }

/* ============ 套餐卡片（layui 栅格：手机 1 列 / 平板 2 列 / 桌面 3 列） ============ */
#planGrid [class*="layui-col-"] { display: flex; }
#planGrid .plan-card { flex: 1; width: 100%; margin-bottom: 15px; }
/* 去卡片化：轻分隔线风格（无阴影堆叠、描边极淡、悬停仅描边着色） */
.plan-card {
    background: #fff;
    border: 1px solid var(--admin-border-light, #eef0f4);
    border-radius: 10px;
    padding: 20px 20px 16px;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
    animation: rise-in 0.5s var(--ease) both;
    animation-delay: calc(var(--i, 0) * 70ms);
}
.plan-card:hover { border-color: var(--admin-primary); box-shadow: 0 10px 30px rgba(22, 119, 255, 0.08); }
.plan-price .cur { font-size: 14px; font-weight: 600; }
.plan-price .num { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; color: var(--admin-danger, #e3403f); }
.plan-card .plan-actions .layui-btn { margin-top: 0; border-radius: var(--radius-sm); }
.plan-actions .layui-btn { flex: 1; min-width: 0; padding: 0 8px; }
/* 主按钮实色、次按钮描边，层级清晰 */
.plan-actions .layui-btn:not(.layui-btn-primary) { background: var(--admin-primary); }

/* 骨架屏 */
.plan-card.sk { min-height: 180px; }
.sk-line {
    height: 14px; border-radius: var(--radius-sm);
    margin: 14px 0;
    background: linear-gradient(90deg, #f1f2f5 25%, #e9ebef 50%, #f1f2f5 75%);
    background-size: 200% 100%;
    animation: shimmer 1.3s infinite;
}
@keyframes shimmer { to { background-position: -200% 0; } }
.sk-line.w50 { width: 50%; }
.sk-line.w70 { width: 70%; }

/* 空态 / 错误态 */
.plan-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 48px 20px;
    color: var(--admin-text-muted);
}
.plan-state .layui-icon { font-size: 36px; color: #c6cad2; display: block; margin-bottom: 10px; }
.plan-state .layui-btn { margin-top: 12px; }

/* ============ 页脚 ============ */
.site-foot {
    margin-top: auto;
    padding: 34px 20px 30px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}
.site-foot b { font-size: 14px; color: var(--admin-text-title); }
.foot-desc { font-size: 12.5px; color: var(--admin-text-muted); }
.site-foot em { font-style: normal; font-size: 12px; color: var(--admin-text-muted); }

/* ============ Toast（与两端一致：上滑入 / 3s 缓慢消失） ============ */
.toasts { position: fixed; top: 14px; right: 14px; display: flex; flex-direction: column; gap: 10px; z-index: 99999; }
.toast {
    background: #fff;
    border: 1px solid var(--admin-border);
    border-left: 3px solid var(--admin-success);
    border-radius: var(--radius);
    padding: 11px 16px;
    font-size: 13px;
    color: var(--admin-text-title);
    box-shadow: 0 6px 20px rgba(28, 35, 48, 0.1);
    min-width: 200px;
    animation: toast-in 0.35s var(--ease) both;
    transition: opacity 0.4s ease, transform 0.4s ease, margin 0.4s ease;
}
.toast.bad { border-left-color: var(--admin-danger); }
.toast.leaving { opacity: 0; transform: translateY(-12px); margin-top: -10px; }
@keyframes toast-in {
    from { opacity: 0; transform: translateY(-100%); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============ 移动端适配（栅格断点由 layui 接管） ============ */
@media (max-width: 768px) {
    .nav-inner { padding: 0 14px; gap: 10px; }
    .nav-links {
        display: none;
        position: absolute;
        top: 56px; left: 0; right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        background: #fff;
        border-bottom: 1px solid var(--admin-border);
        padding: 10px 14px 14px;
        box-shadow: 0 12px 30px rgba(28, 35, 48, 0.08);
    }
    .nav-links.open { display: flex; }
    .nav-link { padding: 10px 12px; }
    .nav-links-actions { display: flex; gap: 10px; padding-top: 10px; }
    .nav-links-actions .layui-btn { flex: 1; }
    .nav-actions { display: none; }
    .nav-burger { display: grid; place-items: center; }

    .hero-inner { padding: 56px 18px 50px; }
    .hero h1 { font-size: 26px; }
    .hero-sub { font-size: 13.5px; }
    .hero-cta .layui-btn-lg { height: 40px; line-height: 40px; padding: 0 20px; font-size: 14px; }

    .section { padding: 44px 0; }
    .sec-title { font-size: 20px; }

    .toasts { left: 14px; right: 14px; }
    .toast { min-width: 0; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
    html { scroll-behavior: auto; }
}
.plan-mode.count  { background: rgba(18, 166, 82, 0.08); color: var(--admin-success); }
.plan-mode.period { background: rgba(232, 131, 12, 0.09); color: var(--admin-warning); }
.plan-actions .layui-btn { flex: 1; border-radius: 3px; white-space: nowrap; }

/* 导航购物车入口 */
.nav-cart { position: relative; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 4px; color: var(--admin-text-body); text-decoration: none; transition: background .2s, color .2s; }
.nav-cart:hover { background: #f4f5f8; color: var(--admin-primary); }
.nav-cart .layui-icon { font-size: 18px; }
.nav-cart-badge { position: absolute; top: -2px; right: -4px; min-width: 16px; height: 16px; padding: 0 4px; border-radius: 3px; background: var(--admin-danger); color: #fff; font-size: 10.5px; line-height: 16px; text-align: center; font-weight: 600; }

/* ============================================================
   v3 追加：独立产品购买页 + 移动端增强
   ============================================================ */

/* 导航当前页高亮 */
.nav-link.on { background: var(--admin-primary-soft); color: var(--admin-primary); font-weight: 600; }

/* 移动端常驻购物车图标（桌面端隐藏，移动端替代被折叠的 nav-actions） */
.nav-cart-fixed { display: none; margin-left: auto; }
@media (max-width: 768px) {
    .nav-cart-fixed { display: grid; place-items: center; }
    .nav-cart-fixed + .nav-burger { margin-left: 0; }
}

/* ---------- 购买页页头（企业级深色 Hero） ---------- */
.buy-hero.corp {
    position: relative; overflow: hidden;
    background: linear-gradient(128deg, #0b1526 0%, #0f1f3a 55%, #123057 100%);
    border-bottom: none;
}
.buy-hero.corp::after {
    content: ''; position: absolute; left: 50%; top: -140px; transform: translateX(-50%);
    width: 560px; height: 280px; border-radius: 50%;
    background: radial-gradient(closest-side, rgba(22, 119, 255, 0.35), transparent);
    filter: blur(10px); pointer-events: none;
}
.buy-hero.corp .buy-hero-inner { position: relative; z-index: 1; max-width: 1120px; margin: 0 auto; padding: 46px 20px 38px; text-align: center; }
.buy-hero.corp h1 { margin-top: 14px; font-size: 30px; font-weight: 800; color: #fff; letter-spacing: 1px; }
.buy-hero.corp p { margin-top: 10px; font-size: 13.5px; color: rgba(226,235,250,.75); }
@media (max-width: 768px) {
    .buy-hero.corp .buy-hero-inner { padding: 34px 16px 30px; }
    .buy-hero.corp h1 { font-size: 24px; }
}
.buy-page .site-foot { padding-bottom: calc(30px + 72px + env(safe-area-inset-bottom, 0px)); }
.filter-chip.on { background: var(--admin-primary); border-color: var(--admin-primary); color: #fff; font-weight: 600; }
.bs-title .layui-icon { font-size: 15px; color: var(--admin-primary); }
.bs-collapse .layui-icon { font-size: 13px; }
.bs-group-head.on { color: var(--admin-primary); }
.bs-arrow.open { transform: rotate(180deg); }
.bs-group-body.open { max-height: 640px; }
.bs-item.on {
    background: rgba(22, 119, 255, 0.07); color: var(--admin-primary); font-weight: 600;
    border-left-color: var(--admin-primary);
}
.bs-count.zero { opacity: .55; }
.bs-item.on .bs-count { background: rgba(22, 119, 255, 0.14); color: var(--admin-primary); }
.bs-foot .layui-icon { font-size: 12px; }
.bs-expand .layui-icon { font-size: 14px; }

/* 桌面端隐藏移动端芯片条；移动端隐藏侧栏 */
@media (min-width: 993px) {
    .buy-content .buy-filter { display: none; }
}
@media (max-width: 992px) {
}

/* 折叠态：侧栏退场（display:none 不占列），第一列收窄为展开按钮列 */
.buy-side.collapsed { display: none; }
.buy-layout.side-collapsed { grid-template-columns: 48px minmax(0, 1fr); }
.buy-layout.side-collapsed .bs-expand { justify-self: start; }
.buy-layout:not(.side-collapsed) .bs-expand { display: none; }

/* layui 栅格内的卡片拉满高度，保证同行等高 */
#goodsGrid [class*="layui-col-"] { display: flex; }
#goodsGrid .plan-card { flex: 1; width: 100%; margin-bottom: 15px; }

/* 产品卡右上角企业角标（文档齐全） */
.plan-card { position: relative; }
.plan-corner .layui-icon { font-size: 11px; }

/* ============ 企业信任区块（四列，纯排版无底色） ============ */
.corp-trust {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
    margin-top: 56px; padding-top: 32px;
    border-top: 1px solid var(--admin-border-light, #eef0f4);
}
.trust-item { display: flex; gap: 12px; align-items: flex-start; }
.trust-item .layui-icon {
    flex: none; width: 34px; height: 34px; border-radius: 8px;
    display: grid; place-items: center; font-size: 16px;
    background: var(--admin-bg, #f5f6f8); color: var(--admin-text-title, #1c2333);
}
.trust-item b { display: block; font-size: 13.5px; color: var(--admin-text-title); margin-bottom: 4px; }
.trust-item span { font-size: 12px; color: var(--admin-text-muted); line-height: 1.8; }
@media (max-width: 992px) {
    .corp-trust { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
    .corp-trust { grid-template-columns: 1fr; }
}
.buy-tip-item .layui-icon { font-size: 14px; color: var(--admin-success); }

/* ---------- 底部购物车条 ---------- */
.buy-cartbar {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--admin-border);
    padding-bottom: env(safe-area-inset-bottom, 0px);
    animation: cartbar-in .3s var(--ease);
}
@keyframes cartbar-in { from { transform: translateY(100%); } }
.buy-cartbar-inner {
    max-width: 1120px; margin: 0 auto;
    display: flex; align-items: center; gap: 14px;
    padding: 10px 20px;
}
.cartbar-info {
    flex: 1; min-width: 0;
    display: flex; align-items: center; gap: 8px;
    color: var(--admin-text-body); text-decoration: none; font-size: 13px;
}
.cartbar-info .layui-icon { font-size: 19px; color: var(--admin-primary); }
.cartbar-info b { color: var(--admin-text-title); }
.cartbar-total b { color: var(--admin-danger); font-size: 16px; }
.buy-cartbar .layui-btn { flex: none; border-radius: var(--radius-sm); }

/* ---------- 购买页移动端 ---------- */
@media (max-width: 768px) {
    .buy-hero-inner { padding: 30px 18px 24px; }
    .buy-hero h1 { font-size: 21px; }
    .buy-main-inner { padding: 16px 14px 28px; }
    .buy-filter { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; margin: 0 -14px 14px; padding: 0 14px; }
    .buy-filter::-webkit-scrollbar { display: none; }
    .filter-chip { flex: none; }
    .buy-cartbar-inner { padding: 10px 14px; gap: 10px; }
    .cartbar-total { display: none; }            /* 窄屏只保留件数，合计进结账页看 */
    .buy-cartbar .layui-btn { flex: 1; }
}

/* ============================================================
   v5 追加：产品接口文档页（/doc/:id）
   ============================================================ */

/* 产品信息卡（页头）样式已迁移至 doc.css（.doc-header） */

/* 文档正文容器 */
.doc-wrap {
    background: #fff; border: 1px solid var(--admin-border);
    border-radius: var(--radius); padding: 26px 30px;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}
.doc-page .buy-page-fallback,
.doc-page .buy-hero { border-bottom: 1px solid var(--admin-border-light); }

/* 文档页移动端（doc-header 布局见 doc.css） */
@media (max-width: 768px) {
    .doc-wrap { padding: 18px 16px; }
}

/* ================= 企业标准多列页脚 ================= */
.site-foot.foot-ent { padding: 48px 40px 26px; display: block; text-align: left; }
.foot-cols { max-width: 1200px; margin: 0 auto 34px; display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr; gap: 34px; }
.foot-col b { display: block; font-size: 13.5px; color: var(--text-1, #e8ecf4); margin-bottom: 14px; letter-spacing: .4px; }
.foot-col a, .foot-col span { display: block; font-size: 12.5px; color: rgba(255,255,255,.55); text-decoration: none; margin-bottom: 10px; transition: color .15s; }
.foot-col a:hover { color: #fff; }
.foot-col.brand-col b { font-size: 17px; }
.foot-col.brand-col .foot-desc { margin: 0 0 12px; color: rgba(255,255,255,.5); line-height: 1.8; }
.foot-base { max-width: 1200px; margin: 0 auto; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.10); text-align: center; }
.foot-base em { font-style: normal; font-size: 12px; color: rgba(255,255,255,.4); }
@media (max-width: 860px) { .foot-cols { grid-template-columns: 1fr 1fr; gap: 24px; } .site-foot.foot-ent { padding: 36px 22px 22px; } }