/* ==========================================================================
   家庭育儿工具套件 · 共享设计系统
   全部 class 以 fs- 为前缀（495 个工具 CSS 共享同一文档，前缀即命名空间）
   ========================================================================== */

.fs-app {
    --fs-bg: #f5f4ff;
    --fs-card: #ffffff;
    --fs-soft: #fbfaff;
    --fs-ink: #171a2c;
    --fs-sub: #5d6380;
    --fs-muted: #8a90a8;
    --fs-line: #e6e4f6;
    --fs-primary: #5a5ad6;
    --fs-primary-d: #4646b8;
    --fs-violet: #8b5cf6;
    --fs-accent: #f0568a;
    --fs-ok: #0f9d63;
    --fs-warn: #b8790b;
    --fs-bad: #d64545;
    --fs-radius: 20px;
    --fs-shadow: 0 18px 44px -26px rgba(43, 32, 110, .42);
    --fs-shadow-sm: 0 6px 18px -12px rgba(43, 32, 110, .35);

    background:
        radial-gradient(900px 420px at 12% -8%, rgba(139, 92, 246, .14), transparent 62%),
        radial-gradient(760px 380px at 92% 4%, rgba(240, 86, 138, .12), transparent 60%),
        var(--fs-bg);
    color: var(--fs-ink);
    min-height: 100vh;
    padding-bottom: 40px;
}

[data-theme="dark"] .fs-app {
    --fs-bg: #0e1020;
    --fs-card: #171a2e;
    --fs-soft: #12142a;
    --fs-ink: #eceafd;
    --fs-sub: #b3b8d4;
    --fs-muted: #8890b3;
    --fs-line: #2a2e4d;
    --fs-primary: #8f8dff;
    --fs-primary-d: #a9a7ff;
    --fs-violet: #b79bff;
    --fs-accent: #ff7aa2;
    --fs-ok: #43d391;
    --fs-warn: #f0b840;
    --fs-bad: #ff7b7b;
    --fs-shadow: 0 18px 44px -24px rgba(0, 0, 0, .8);
    --fs-shadow-sm: 0 6px 18px -12px rgba(0, 0, 0, .7);

    background:
        radial-gradient(900px 420px at 10% -10%, rgba(139, 92, 246, .22), transparent 62%),
        radial-gradient(760px 380px at 94% 2%, rgba(240, 86, 138, .16), transparent 60%),
        var(--fs-bg);
}

.fs-app .container { max-width: 1240px; }

/* ---------- Hero ---------- */
.fs-hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 26px;
    align-items: center;
    margin: 6px 0 22px;
    padding: 30px 32px;
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(255, 255, 255, .92), rgba(255, 255, 255, .72));
    border: 1px solid var(--fs-line);
    box-shadow: var(--fs-shadow);
    overflow: hidden;
}

[data-theme="dark"] .fs-hero {
    background: linear-gradient(135deg, rgba(30, 34, 60, .95), rgba(23, 26, 46, .78));
}

.fs-kicker {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--fs-primary) 12%, transparent);
    color: var(--fs-primary);
    font-size: 12.5px;
    font-weight: 700;
    letter-spacing: .02em;
}

.fs-hero h1 {
    margin: 12px 0 10px;
    font-size: clamp(26px, 3.4vw, 40px);
    line-height: 1.22;
    font-weight: 800;
    letter-spacing: -.01em;
}

.fs-hero h1 em {
    font-style: normal;
    background: linear-gradient(100deg, var(--fs-primary), var(--fs-accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.fs-sub {
    margin: 0 0 14px;
    font-size: 15px;
    line-height: 1.85;
    color: var(--fs-sub);
    max-width: 62ch;
}

.fs-sub b { color: var(--fs-ink); font-weight: 700; }

.fs-points {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    margin: 0 0 16px;
    padding: 0;
    list-style: none;
    font-size: 13.5px;
    color: var(--fs-sub);
}

.fs-points li { display: inline-flex; align-items: center; gap: 6px; }
.fs-points li::before {
    content: "";
    width: 6px; height: 6px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--fs-primary), var(--fs-accent));
}

.fs-tags { display: flex; flex-wrap: wrap; gap: 8px; }

.fs-tag {
    padding: 4px 11px;
    border-radius: 999px;
    border: 1px solid var(--fs-line);
    background: var(--fs-card);
    font-size: 12px;
    color: var(--fs-sub);
    font-weight: 600;
}

.fs-tag-free { color: var(--fs-ok); border-color: color-mix(in srgb, var(--fs-ok) 35%, transparent); }
.fs-tag-ai { color: var(--fs-violet); border-color: color-mix(in srgb, var(--fs-violet) 35%, transparent); }
.fs-tag-line { color: var(--fs-muted); }

/* Hero 右侧装饰 */
.fs-hero-art { position: relative; height: 190px; }
.fs-blob {
    position: absolute;
    border-radius: 46% 54% 62% 38% / 48% 42% 58% 52%;
    filter: blur(1px);
    opacity: .55;
}
.fs-blob-a { width: 168px; height: 168px; left: 6%; top: 6%; background: linear-gradient(135deg, #a78bfa, #6366f1); animation: fs-float 9s ease-in-out infinite; }
.fs-blob-b { width: 104px; height: 104px; right: 10%; bottom: 4%; background: linear-gradient(135deg, #fda4af, #f0568a); animation: fs-float 7s ease-in-out infinite reverse; }
.fs-blob-c { width: 66px; height: 66px; right: 4%; top: 2%; background: linear-gradient(135deg, #6ee7b7, #14b8a6); animation: fs-float 11s ease-in-out infinite; }

.fs-art-card {
    position: absolute;
    display: grid;
    place-items: center;
    width: 64px; height: 64px;
    border-radius: 18px;
    background: var(--fs-card);
    border: 1px solid var(--fs-line);
    box-shadow: var(--fs-shadow-sm);
    font-size: 28px;
}
.fs-art-1 { left: 12%; top: 22%; transform: rotate(-7deg); }
.fs-art-2 { left: 46%; top: 48%; transform: rotate(6deg); }
.fs-art-3 { right: 8%; top: 20%; transform: rotate(10deg); }

@keyframes fs-float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-12px) rotate(4deg); }
}

/* ---------- 主工作区 ---------- */
.fs-work {
    display: grid;
    grid-template-columns: 400px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
    margin-bottom: 22px;
}

.fs-panel {
    display: grid;
    gap: 14px;
    padding: 20px;
    border-radius: var(--fs-radius);
    background: var(--fs-card);
    border: 1px solid var(--fs-line);
    box-shadow: var(--fs-shadow-sm);
    position: sticky;
    top: 84px;
}

.fs-step {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 12px;
    padding: 14px;
    border-radius: 16px;
    background: var(--fs-soft);
    border: 1px solid var(--fs-line);
}

.fs-step-no {
    width: 30px; height: 30px;
    display: grid; place-items: center;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--fs-primary), var(--fs-violet));
    color: #fff;
    font-size: 13px;
    font-weight: 800;
}

.fs-step-body h2 {
    margin: 0 0 10px;
    font-size: 14.5px;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.fs-sub-t { font-size: 12px; font-weight: 500; color: var(--fs-muted); }

.fs-field { margin-bottom: 10px; }
.fs-field:last-child { margin-bottom: 0; }

.fs-label {
    display: block;
    margin-bottom: 5px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--fs-sub);
}

.fs-input,
.fs-select,
.fs-textarea {
    width: 100%;
    padding: 9px 11px;
    border-radius: 11px;
    border: 1px solid var(--fs-line);
    background: var(--fs-card);
    color: var(--fs-ink);
    font-size: 14px;
    font-family: inherit;
    transition: border-color .16s, box-shadow .16s;
}

.fs-textarea { min-height: 72px; resize: vertical; line-height: 1.6; }

.fs-input:focus,
.fs-select:focus,
.fs-textarea:focus {
    outline: none;
    border-color: var(--fs-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--fs-primary) 18%, transparent);
}

.fs-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.fs-hint { margin: 6px 0 0; font-size: 12px; color: var(--fs-muted); line-height: 1.6; }

/* 分段选择 */
.fs-seg {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 4px;
    border-radius: 12px;
    background: color-mix(in srgb, var(--fs-primary) 7%, transparent);
}

.fs-seg button {
    flex: 1 1 auto;
    min-width: 62px;
    padding: 7px 10px;
    border: 0;
    border-radius: 9px;
    background: transparent;
    color: var(--fs-sub);
    font-size: 12.5px;
    font-weight: 700;
    cursor: pointer;
    transition: background .16s, color .16s;
    font-family: inherit;
}

.fs-seg button.on {
    background: var(--fs-card);
    color: var(--fs-primary);
    box-shadow: var(--fs-shadow-sm);
}

/* 复选 */
.fs-checks { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 10px; }

.fs-check {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 13px;
    color: var(--fs-sub);
    cursor: pointer;
    line-height: 1.5;
}

.fs-check input { width: 15px; height: 15px; accent-color: var(--fs-primary); flex: 0 0 auto; }

/* 按钮 */
.fs-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.fs-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 16px;
    border-radius: 12px;
    border: 1px solid var(--fs-line);
    background: var(--fs-card);
    color: var(--fs-ink);
    font-size: 13.5px;
    font-weight: 700;
    cursor: pointer;
    transition: transform .14s, box-shadow .14s, background .14s;
    font-family: inherit;
}

.fs-btn:hover { transform: translateY(-1px); box-shadow: var(--fs-shadow-sm); }
.fs-btn:active { transform: translateY(0); }

.fs-btn-main {
    flex: 1 1 auto;
    background: linear-gradient(135deg, var(--fs-primary), var(--fs-violet));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 12px 24px -14px color-mix(in srgb, var(--fs-primary) 70%, transparent);
}

.fs-btn-ghost { color: var(--fs-sub); }

.fs-btn-sm { padding: 6px 11px; font-size: 12.5px; border-radius: 9px; }

.fs-btn-ai {
    width: 100%;
    margin-top: 10px;
    background: linear-gradient(135deg, #7c3aed, #f0568a);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 12px 26px -16px rgba(124, 58, 237, .8);
}

.fs-btn-ai[disabled] { opacity: .65; cursor: progress; }

/* AI 卡 */
.fs-ai {
    padding: 14px;
    border-radius: 16px;
    border: 1px dashed color-mix(in srgb, var(--fs-violet) 45%, transparent);
    background: color-mix(in srgb, var(--fs-violet) 6%, transparent);
}

.fs-ai-head { display: flex; align-items: center; gap: 8px; }

.fs-ai-badge {
    display: grid;
    place-items: center;
    width: 26px; height: 26px;
    border-radius: 8px;
    background: linear-gradient(135deg, #7c3aed, #f0568a);
    color: #fff;
    font-size: 11px;
    font-weight: 800;
}

.fs-ai-head h2 { margin: 0; font-size: 14px; font-weight: 800; }

.fs-beta {
    padding: 1px 7px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--fs-violet) 16%, transparent);
    color: var(--fs-violet);
    font-size: 11px;
    font-weight: 700;
}

.fs-ai-hint { margin: 8px 0 0; font-size: 12.5px; color: var(--fs-sub); line-height: 1.7; }

.fs-ai-out {
    margin-top: 12px;
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--fs-card);
    border: 1px solid var(--fs-line);
    font-size: 13.5px;
    line-height: 1.85;
    color: var(--fs-ink);
    max-height: 420px;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.fs-ai-out strong { color: var(--fs-primary); }

.fs-disclaimer {
    margin: 0;
    font-size: 11.5px;
    line-height: 1.7;
    color: var(--fs-muted);
}

/* 状态 */
.fs-status { margin: 8px 0 0; font-size: 12.5px; line-height: 1.6; color: var(--fs-muted); min-height: 1px; }
.fs-status.ok { color: var(--fs-ok); }
.fs-status.warn { color: var(--fs-warn); }
.fs-status.bad { color: var(--fs-bad); }

/* ---------- 结果区 ---------- */
.fs-desk {
    padding: 20px;
    border-radius: var(--fs-radius);
    background: var(--fs-card);
    border: 1px solid var(--fs-line);
    box-shadow: var(--fs-shadow-sm);
    min-height: 320px;
}

.fs-desk-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
    padding-bottom: 12px;
    margin-bottom: 14px;
    border-bottom: 1px dashed var(--fs-line);
    font-size: 13.5px;
}

.fs-desk-head .fs-status { margin: 0; }

.fs-out { font-size: 14px; line-height: 1.8; }
.fs-out p { margin: 0 0 10px; }

.fs-empty {
    padding: 46px 16px;
    text-align: center;
    color: var(--fs-muted);
    font-size: 13.5px;
    line-height: 1.8;
}
.fs-empty b { display: block; font-size: 15px; color: var(--fs-ink); margin-bottom: 6px; }

/* 指标卡 */
.fs-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.fs-metric {
    padding: 13px 14px;
    border-radius: 14px;
    background: var(--fs-soft);
    border: 1px solid var(--fs-line);
}

.fs-metric span { display: block; font-size: 12px; color: var(--fs-muted); margin-bottom: 4px; }
.fs-metric b { font-size: 19px; font-weight: 800; letter-spacing: -.01em; color: var(--fs-ink); }
.fs-metric b small { font-size: 12px; font-weight: 600; color: var(--fs-sub); margin-left: 3px; }
.fs-metric.is-good b { color: var(--fs-ok); }
.fs-metric.is-warn b { color: var(--fs-warn); }
.fs-metric.is-bad b { color: var(--fs-bad); }

/* 表格 */
.fs-table-wrap { overflow-x: auto; border-radius: 14px; border: 1px solid var(--fs-line); margin-bottom: 14px; }

.fs-table { width: 100%; border-collapse: collapse; font-size: 13px; }

.fs-table th,
.fs-table td {
    padding: 9px 12px;
    text-align: left;
    border-bottom: 1px solid var(--fs-line);
    vertical-align: top;
    line-height: 1.6;
}

.fs-table thead th {
    background: var(--fs-soft);
    font-size: 12px;
    color: var(--fs-sub);
    font-weight: 800;
    white-space: nowrap;
}

.fs-table tbody tr:last-child td { border-bottom: 0; }
.fs-table tbody tr:hover td { background: color-mix(in srgb, var(--fs-primary) 4%, transparent); }
.fs-table .fs-num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* 徽标 */
.fs-badge {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: 11.5px;
    font-weight: 700;
    background: color-mix(in srgb, var(--fs-primary) 12%, transparent);
    color: var(--fs-primary);
    white-space: nowrap;
}

.fs-badge.ok { background: color-mix(in srgb, var(--fs-ok) 14%, transparent); color: var(--fs-ok); }
.fs-badge.warn { background: color-mix(in srgb, var(--fs-warn) 16%, transparent); color: var(--fs-warn); }
.fs-badge.bad { background: color-mix(in srgb, var(--fs-bad) 14%, transparent); color: var(--fs-bad); }
.fs-badge.gray { background: color-mix(in srgb, var(--fs-muted) 16%, transparent); color: var(--fs-sub); }

/* 列表块 */
.fs-block {
    padding: 14px 16px;
    border-radius: 14px;
    background: var(--fs-soft);
    border: 1px solid var(--fs-line);
    margin-bottom: 12px;
}

.fs-block > h3 {
    margin: 0 0 8px;
    font-size: 13.5px;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 6px;
}

.fs-block ul,
.fs-block ol { margin: 0; padding-left: 20px; }
.fs-block li { margin: 4px 0; line-height: 1.75; }

.fs-block.warn { background: color-mix(in srgb, var(--fs-warn) 8%, transparent); border-color: color-mix(in srgb, var(--fs-warn) 30%, transparent); }
.fs-block.danger { background: color-mix(in srgb, var(--fs-bad) 7%, transparent); border-color: color-mix(in srgb, var(--fs-bad) 30%, transparent); }
.fs-block.tip { background: color-mix(in srgb, var(--fs-ok) 7%, transparent); border-color: color-mix(in srgb, var(--fs-ok) 28%, transparent); }

/* 打印页（可选：一行行可打勾） */
.fs-sheet {
    background: #fff;
    color: #111;
    border: 1px solid #d8d8d8;
    border-radius: 10px;
    padding: 20mm 16mm;
    margin-bottom: 16px;
}
.fs-sheet h2 { margin: 0 0 4px; font-size: 18px; text-align: center; color: #111; }
.fs-sheet .fs-sheet-sub { text-align: center; font-size: 12px; color: #555; margin-bottom: 14px; }
.fs-sheet h3 { margin: 14px 0 6px; font-size: 13px; color: #111; border-left: 3px solid #5a5ad6; padding-left: 8px; }
.fs-sheet ul { margin: 0; padding-left: 18px; }
.fs-sheet li { margin: 5px 0; font-size: 13px; line-height: 1.7; color: #111; }
.fs-sheet .fs-line-item { display: flex; gap: 8px; align-items: flex-start; }
.fs-sheet .fs-line-item i {
    flex: 0 0 auto; width: 13px; height: 13px; margin-top: 3px;
    border: 1.5px solid #666; border-radius: 3px;
}
.fs-sheet table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.fs-sheet th, .fs-sheet td { border: 1px solid #bbb; padding: 6px 8px; text-align: left; color: #111; }
.fs-sheet th { background: #f2f2f7; }

/* ---------- 说明区 ---------- */
.fs-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    margin: 4px 0 22px;
}

.fs-note {
    padding: 20px 22px;
    border-radius: var(--fs-radius);
    background: var(--fs-card);
    border: 1px solid var(--fs-line);
    box-shadow: var(--fs-shadow-sm);
}

.fs-note h2 { margin: 0 0 12px; font-size: 16px; font-weight: 800; }
.fs-note h3 { margin: 14px 0 6px; font-size: 14px; font-weight: 800; color: var(--fs-ink); }
.fs-note p { margin: 0 0 10px; font-size: 13.5px; line-height: 1.9; color: var(--fs-sub); }
.fs-note p:last-child { margin-bottom: 0; }

.fs-note ol, .fs-note ul { margin: 0 0 10px; padding-left: 20px; }
.fs-note li { font-size: 13.5px; line-height: 1.9; color: var(--fs-sub); margin: 4px 0; }

.fs-faq, .fs-links { grid-column: 1 / -1; }

.fs-faq details {
    border-top: 1px solid var(--fs-line);
    padding: 10px 0;
}
.fs-faq details:first-of-type { border-top: 0; }
.fs-faq summary {
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    color: var(--fs-ink);
    list-style: none;
}
.fs-faq summary::-webkit-details-marker { display: none; }
.fs-faq summary::before { content: "＋ "; color: var(--fs-primary); font-weight: 800; }
.fs-faq details[open] summary::before { content: "－ "; }
.fs-faq details p { margin: 8px 0 0; font-size: 13.5px; line-height: 1.9; color: var(--fs-sub); }

.fs-link-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.fs-link-grid a {
    padding: 7px 13px;
    border-radius: 999px;
    border: 1px solid var(--fs-line);
    background: var(--fs-soft);
    color: var(--fs-sub);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: all .15s;
}
.fs-link-grid a:hover {
    color: var(--fs-primary);
    border-color: var(--fs-primary);
    background: color-mix(in srgb, var(--fs-primary) 6%, transparent);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .fs-work { grid-template-columns: 1fr; }
    .fs-panel { position: static; }
    .fs-hero { grid-template-columns: 1fr; padding: 24px; }
    .fs-hero-art { display: none; }
}

@media (max-width: 720px) {
    .fs-content { grid-template-columns: 1fr; }
    .fs-checks { grid-template-columns: 1fr; }
    .fs-row { grid-template-columns: 1fr; }
    .fs-hero { border-radius: 20px; }
    .fs-sheet { padding: 14px 10px; }
}

/* ---------- 打印 ---------- */
@media print {
    @page { size: A4; margin: 12mm; }

    html, body { background: #fff !important; }

    body > *:not(.fs-app) { display: none !important; }
    .fs-app { background: #fff !important; padding: 0 !important; min-height: 0 !important; }

    .fs-hero,
    .fs-panel,
    .fs-desk-head,
    .fs-content,
    .fs-noprint,
    .detail-breadcrumb,
    .back-to-top,
    header, footer, nav { display: none !important; }

    .fs-app .container { max-width: none !important; padding: 0 !important; margin: 0 !important; }
    .fs-work { display: block !important; margin: 0 !important; gap: 0 !important; }
    .fs-desk { border: 0 !important; box-shadow: none !important; padding: 0 !important; border-radius: 0 !important; background: #fff !important; }
    .fs-out { font-size: 12px !important; color: #000 !important; }

    .fs-sheet {
        border: 0 !important;
        padding: 0 !important;
        margin: 0 0 8mm !important;
        page-break-after: always;
        break-after: page;
    }
    .fs-sheet:last-child { page-break-after: auto; break-after: auto; }

    .fs-block, .fs-metrics, .fs-table-wrap {
        background: #fff !important;
        border-color: #999 !important;
        box-shadow: none !important;
        page-break-inside: avoid;
        break-inside: avoid;
    }

    .fs-table th, .fs-table td { border-color: #999 !important; }
    .fs-badge { border: 1px solid #888; }
    .fs-metric b { color: #000 !important; }
    .fs-note { box-shadow: none !important; border-color: #ccc !important; }
}