@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700;800&family=Source+Serif+4:wght@500;600;700;800&display=swap");

:root {
    --ff-nav-page: #f7f9fb;
    --ff-nav-paper: #ffffff;
    --ff-nav-ink: #191c1e;
    --ff-nav-muted: #5f6368;
    --ff-nav-line: rgba(125, 133, 143, 0.16);
    --ff-nav-line-strong: rgba(125, 133, 143, 0.28);
    --ff-nav-accent: #d7a95b;
    --ff-nav-accent-soft: #8bb7a8;
    --ff-nav-panel: rgba(255, 255, 255, 0.98);
    --ff-nav-shadow: 0 22px 50px rgba(15, 23, 42, 0.12);
    --ff-page-bg: #f7f9fb;
    --ff-page-surface: #ffffff;
    --ff-page-surface-2: #f2f4f6;
    --ff-page-ink: #191c1e;
    --ff-page-muted: #5f6368;
    --ff-page-line: rgba(125, 133, 143, 0.14);
    --ff-page-accent: #d7a95b;
    --ff-page-accent-2: #8bb7a8;
    --ff-page-shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
}

body:has(.ff-nav-shell),
body.has-ff-nav {
    padding-top: 82px;
}

html {
    background: var(--ff-page-bg);
}

body {
    background:
        radial-gradient(circle at top left, rgba(215, 169, 91, 0.10), transparent 24%),
        radial-gradient(circle at 85% 5%, rgba(139, 183, 168, 0.08), transparent 22%),
        linear-gradient(180deg, #fbfcfd 0%, #f4f7fa 52%, #eef2f6 100%);
    color: var(--ff-page-ink);
    font-family: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background:
        linear-gradient(90deg, rgba(17, 24, 39, 0.035) 1px, transparent 1px),
        linear-gradient(rgba(17, 24, 39, 0.03) 1px, transparent 1px);
    background-size: 120px 120px, 120px 120px;
    mask-image: radial-gradient(circle at center, black 55%, transparent 100%);
    opacity: 0.55;
}

.ff-nav-shell,
.ff-nav-shell * {
    box-sizing: border-box;
}

.ff-nav-shell {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 2147483000;
    height: 76px;
    color: var(--ff-nav-ink);
    font-family: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    letter-spacing: 0;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(247, 249, 251, 0.96));
    border-bottom: 1px solid var(--ff-nav-line);
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.10);
    backdrop-filter: blur(16px);
}

/* Hide old page-owned top bars when the unified nav is present. */
.ff-nav-shell ~ nav.navbar,
.ff-nav-shell ~ nav.fixed,
.ff-nav-shell ~ header.fixed {
    display: none !important;
}

.ff-nav-inner {
    display: flex;
    align-items: center;
    gap: 14px;
    width: min(1500px, calc(100% - 36px));
    height: 100%;
    margin: 0 auto;
}

.ff-nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 190px;
    color: var(--ff-nav-ink);
    text-decoration: none;
}

.ff-nav-mark {
    display: grid;
    width: 36px;
    height: 36px;
    place-items: center;
    border: 1px solid color-mix(in oklch, var(--ff-nav-accent) 48%, var(--ff-nav-line));
    border-radius: 8px;
    background: linear-gradient(180deg, color-mix(in oklch, var(--ff-nav-accent) 18%, #ffffff), #f8fafc);
    color: var(--ff-nav-accent);
    font-family: "Source Serif 4", Georgia, serif;
    font-weight: 800;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.ff-nav-word {
    display: flex;
    flex-direction: column;
    gap: 3px;
    line-height: 1;
}

.ff-nav-word span {
    color: var(--ff-nav-muted);
    text-transform: uppercase;
    font-size: 0.68rem;
    font-weight: 800;
}

.ff-nav-word strong {
    color: var(--ff-nav-ink);
    font-size: 1.04rem;
    letter-spacing: -0.01em;
}

.ff-nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    min-width: 0;
    padding: 5px;
    border: 1px solid var(--ff-nav-line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.82);
}

.ff-nav-link,
.ff-nav-group-button {
    display: flex;
    align-items: center;
    height: 34px;
    padding: 0 13px;
    border: 0;
    border-radius: 5px;
    background: transparent;
    color: var(--ff-nav-muted);
    text-decoration: none;
    white-space: nowrap;
    font: inherit;
    font-size: 0.84rem;
    font-weight: 800;
    cursor: pointer;
}

.ff-nav-link:hover,
.ff-nav-link.is-active,
.ff-nav-group:hover .ff-nav-group-button,
.ff-nav-group-button.is-active {
    background: linear-gradient(180deg, #ffffff, #eef2f7);
    color: var(--ff-nav-ink);
    box-shadow: inset 0 0 0 1px rgba(125, 133, 143, 0.08);
}

.ff-nav-group {
    position: relative;
}

.ff-nav-group::after {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    height: 12px;
    content: "";
}

.ff-nav-group-button::after {
    content: "";
    width: 7px;
    height: 7px;
    margin-left: 8px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    opacity: 0.55;
}

.ff-nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 310px;
    margin-top: 8px;
    padding: 8px;
    border: 1px solid var(--ff-nav-line-strong);
    border-radius: 8px;
    background: var(--ff-nav-panel);
    box-shadow: var(--ff-nav-shadow);
    opacity: 0;
    transform: translateY(-4px);
    pointer-events: none;
    transition: opacity 0.14s ease, transform 0.14s ease;
}

.ff-nav-group:hover .ff-nav-menu,
.ff-nav-group:focus-within .ff-nav-menu {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.ff-nav-menu a {
    display: block;
    padding: 10px 11px;
    border: 1px solid transparent;
    border-radius: 6px;
    color: var(--ff-nav-ink);
    text-decoration: none;
}

.ff-nav-menu a:hover,
.ff-nav-menu a.is-active {
    border-color: color-mix(in oklch, var(--ff-nav-accent) 35%, var(--ff-nav-line));
    background: linear-gradient(180deg, color-mix(in oklch, var(--ff-nav-accent) 10%, #ffffff), #f5f7fb);
}

.ff-nav-menu strong,
.ff-nav-menu span {
    display: block;
    line-height: 1.35;
}

.ff-nav-menu strong {
    font-size: 0.84rem;
    font-weight: 850;
}

.ff-nav-menu span {
    margin-top: 3px;
    color: var(--ff-nav-muted);
    font-size: 0.74rem;
    font-weight: 600;
}

.ff-nav-actions {
    display: flex;
    align-items: center;
    gap: 9px;
    margin-left: auto;
}

.ff-nav-status {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    height: 34px;
    padding: 0 10px;
    border: 1px solid var(--ff-nav-line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.88);
    color: var(--ff-nav-muted);
    font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
    font-size: 0.72rem;
    font-weight: 800;
}

.ff-nav-status span {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--ff-nav-accent);
}

.ff-nav-login {
    display: inline-flex;
    align-items: center;
    height: 34px;
    padding: 0 13px;
    border: 1px solid var(--ff-nav-line-strong);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.88);
    color: var(--ff-nav-ink);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 850;
}

.ff-nav-login:hover {
    border-color: color-mix(in oklch, var(--ff-nav-accent) 45%, var(--ff-nav-line-strong));
    background: color-mix(in oklch, var(--ff-nav-accent) 10%, #ffffff);
}

.ff-nav-shell + * {
    position: relative;
}

/* Global editorial defaults */
h1, h2, h3, h4, h5, h6 {
    font-family: "Source Serif 4", Georgia, serif;
    letter-spacing: -0.02em;
    color: var(--ff-page-ink);
}

p, li, td, th, label, input, select, textarea, button {
    font-family: "IBM Plex Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

a {
    color: color-mix(in oklch, var(--ff-page-accent) 82%, white);
}

.card,
.modal-content,
.dropdown-menu,
.table-responsive,
.alert,
.list-group-item,
.form-control,
.form-select {
    border-color: var(--ff-page-line) !important;
}

.card,
.modal-content,
.dropdown-menu,
.list-group-item {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    color: var(--ff-page-ink);
    box-shadow: var(--ff-page-shadow);
}

.card {
    border-radius: 18px;
}

.btn-primary,
.btn-success,
.btn-info,
.btn-warning {
    border: 0;
    background: linear-gradient(135deg, var(--ff-page-accent), #c9893d);
    color: #101010;
    font-weight: 800;
}

.btn-outline-primary,
.btn-outline-secondary,
.btn-outline-success,
.btn-outline-info {
    border-color: var(--ff-page-line) !important;
    color: var(--ff-page-ink) !important;
    background: rgba(17, 24, 39, 0.04);
}

.btn-outline-primary:hover,
.btn-outline-secondary:hover,
.btn-outline-success:hover,
.btn-outline-info:hover {
    border-color: color-mix(in oklch, var(--ff-page-accent) 36%, var(--ff-page-line)) !important;
    background: rgba(17, 24, 39, 0.06);
}

.form-control,
.form-select {
    background-color: rgba(255, 255, 255, 0.92);
    color: var(--ff-page-ink);
    border-radius: 12px;
}

.form-control:focus,
.form-select:focus {
    border-color: color-mix(in oklch, var(--ff-page-accent) 54%, var(--ff-page-line));
    box-shadow: 0 0 0 0.22rem rgba(215, 169, 91, 0.14);
}

.table {
    color: var(--ff-page-ink);
}

.table thead th {
    color: var(--ff-page-muted);
    background: rgba(17, 24, 39, 0.03);
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
    --bs-table-accent-bg: rgba(17, 24, 39, 0.02);
    color: var(--ff-page-ink);
}

.alert-info,
.alert-secondary {
    background: rgba(139, 183, 168, 0.1);
    color: var(--ff-page-ink);
}

.text-muted,
.small,
.form-text,
.card-text.text-muted {
    color: var(--ff-page-muted) !important;
}

.navbar,
.bg-light {
    background: rgba(255, 255, 255, 0.94) !important;
    backdrop-filter: blur(14px);
}

.badge.bg-info,
.badge.bg-secondary {
    background: rgba(215, 169, 91, 0.14) !important;
    color: var(--ff-page-ink) !important;
    border: 1px solid rgba(215, 169, 91, 0.16);
}

@media (max-width: 1120px) {
    .ff-nav-shell {
        height: auto;
    }
}

.ff-nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--ff-nav-line-strong);
    border-radius: 7px;
    background: rgba(255, 255, 255, 0.90);
    color: var(--ff-nav-ink);
    cursor: pointer;
}

.ff-nav-toggle-lines,
.ff-nav-toggle-lines::before,
.ff-nav-toggle-lines::after {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition: transform 0.18s ease, opacity 0.18s ease;
    content: "";
}

.ff-nav-toggle-lines::before {
    transform: translateY(-6px);
}

.ff-nav-toggle-lines::after {
    transform: translateY(4px);
}

.ff-nav-toggle-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
}

.ff-nav-shell.is-open .ff-nav-toggle-lines {
    transform: rotate(45deg);
}

.ff-nav-shell.is-open .ff-nav-toggle-lines::before {
    opacity: 0;
}

.ff-nav-shell.is-open .ff-nav-toggle-lines::after {
    transform: translateY(-2px) rotate(90deg);
}

@media (max-width: 1120px) {
    .ff-nav-brand {
        min-width: auto;
    }

    .ff-nav-word {
        display: none;
    }

    .ff-nav-toggle {
        display: flex;
    }

    .ff-nav-links {
        position: fixed;
        left: 12px;
        right: 12px;
        top: 84px;
        display: none;
        max-height: calc(100vh - 106px);
        overflow-y: auto;
        padding: 8px;
        border-color: var(--ff-nav-line-strong);
        background: var(--ff-nav-panel);
        box-shadow: var(--ff-nav-shadow);
    }

    .ff-nav-shell.is-open .ff-nav-links {
        display: block;
    }

    .ff-nav-link,
    .ff-nav-group-button {
        width: 100%;
        justify-content: space-between;
        margin-bottom: 4px;
    }

    .ff-nav-group {
        position: static;
    }

    .ff-nav-group::after {
        content: none;
    }

    .ff-nav-menu {
        position: static;
        width: 100%;
        margin: 0 0 8px;
        border-color: var(--ff-nav-line);
        box-shadow: none;
        background: rgba(255, 255, 255, 0.04);
        opacity: 1;
        transform: none;
        pointer-events: auto;
    }
}

@media (max-width: 640px) {
    body:has(.ff-nav-shell),
    body.has-ff-nav {
        padding-top: 68px;
    }

    .ff-nav-shell {
        height: 62px;
    }

    .ff-nav-inner {
        width: calc(100% - 20px);
        gap: 8px;
    }

    .ff-nav-status,
    .ff-nav-login {
        display: none;
    }

    .ff-nav-links {
        top: 72px;
    }
}

@media print {
    body:has(.ff-nav-shell),
    body.has-ff-nav {
        padding-top: 0;
    }

    .ff-nav-shell {
        display: none !important;
    }
}