:root {
    --bg: #f6f7f9;
    --bg-soft: #eef0f3;
    --card: #ffffff;
    --text: #1c2430;
    --muted: #667085;
    --border: #e4e7ec;
    --accent: #1e4fd8;
    --accent-2: #4f46e5;
    --accent-soft: #eaf0ff;
    --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 1px 3px rgba(16, 24, 40, .04);
    --shadow-lg: 0 12px 32px rgba(16, 24, 40, .10);
    --radius: 14px;
    --topnav-h: 62px;
}

html[data-theme="dark"] {
    --bg: #0d1321;
    --bg-soft: #131b2e;
    --card: #182136;
    --text: #e8edf6;
    --muted: #94a3b8;
    --border: #26334d;
    --accent: #5b8cff;
    --accent-2: #8b7cf8;
    --accent-soft: rgba(91, 140, 255, .14);
    --shadow: 0 1px 2px rgba(0, 0, 0, .3);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, .5);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
    transition: background .25s ease, color .25s ease;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent); }

.app-main { min-height: 100vh; }
.app-content {
    max-width: 1460px;
    margin: 0 auto;
    padding: 30px 32px 60px;
}

.page-title-wrap {
    margin-bottom: 22px;
    font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: .5px;
    color: var(--text);
}
.page-title-wrap:empty { display: none; }

/* ===== 顶部导航 ===== */
.topnav {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 0 rgba(16, 24, 40, .02);
}
.topnav-inner {
    max-width: 1460px;
    margin: 0 auto;
    padding: 0 24px;
    height: var(--topnav-h);
    display: flex;
    align-items: center;
    gap: 18px;
}
.topnav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    margin-right: 8px;
}
.brand-mark {
    width: 38px; height: 38px;
    border-radius: 11px;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.brand-mark img {
    width: 100%; height: 100%;
    display: block;
    border-radius: 11px;
    box-shadow: 0 4px 12px rgba(20, 24, 32, .25);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name {
    font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 1px;
}
.brand-sub { font-size: 10.5px; color: var(--muted); letter-spacing: .5px; }

.topnav-menus { display: flex; align-items: center; gap: 2px; flex: 1; }
.tn-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 13px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    white-space: nowrap;
    position: relative;
    transition: color .15s ease, background .15s ease;
}
.tn-link:hover { color: var(--text); background: var(--bg-soft); }
.tn-link.active { color: var(--accent); background: var(--accent-soft); }
.tn-link.dropdown-toggle::after { opacity: .6; }

.dropdown-menu {
    border-radius: 12px;
    padding: 6px;
    min-width: 210px;
    margin-top: 8px !important;
    box-shadow: var(--shadow-lg);
    background: var(--card);
}
.dropdown-item {
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 13.5px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 9px;
}
.dropdown-item i { color: var(--muted); width: 16px; text-align: center; }
.dropdown-item:hover, .dropdown-item.active { background: var(--accent-soft); color: var(--accent); }
.dropdown-item.active i, .dropdown-item:hover i { color: var(--accent); }

.topnav-right { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.topnav-user { display: flex; align-items: center; gap: 7px; font-size: 13px; color: var(--text); }
.topnav-user > i { font-size: 19px; color: var(--muted); }
.role-badge {
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 11.5px;
    padding: 2px 9px;
    border-radius: 20px;
    font-weight: 500;
}
.btn-icon {
    width: 36px; height: 36px;
    border: 1px solid transparent;
    border-radius: 9px;
    background: transparent;
    color: var(--muted);
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background .15s ease, color .15s ease;
}
.btn-icon:hover { background: var(--bg-soft); color: var(--text); }

.topnav-mobile {
    border-top: 1px solid var(--border);
    padding: 10px 18px 16px;
    max-height: calc(100vh - var(--topnav-h));
    overflow-y: auto;
}
.m-group {
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 1.5px;
    font-weight: 600;
    margin: 14px 4px 6px;
}
.m-link {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 9px 10px;
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
}
.m-link:hover, .m-link.active { background: var(--accent-soft); color: var(--accent); }
.m-link i { color: var(--muted); width: 17px; text-align: center; }

/* 两行悬停式菜单：第二行常驻显示当前分组 */
.mega-bar {
    border-top: 1px solid var(--border);
    background: var(--card);
}
.mega-inner {
    max-width: 1460px;
    margin: 0 auto;
    padding: 10px 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.mega-label {
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--muted);
    font-weight: 600;
    margin-right: 12px;
    white-space: nowrap;
}
.mega-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 12px;
    border-radius: 8px;
    color: var(--text);
    font-size: 13.5px;
    border: 1px solid transparent;
    transition: border-color .15s ease, background .15s ease, color .15s ease;
}
.mega-item i { color: var(--muted); }
.mega-item:hover, .mega-item.active {
    border-color: var(--border);
    background: var(--bg-soft);
    color: var(--accent);
}
.mega-item:hover i, .mega-item.active i { color: var(--accent); }

/* ===== 编辑感设计升级 ===== */
.card {
    box-shadow: none;
}
.stat-card {
    box-shadow: none;
}
.form-section {
    box-shadow: none;
}
.page-title-wrap {
    font-size: 28px;
    letter-spacing: 1px;
}
.page-head h2 {
    font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
    letter-spacing: .5px;
}
.card-header {
    letter-spacing: .8px;
    font-size: 13.5px;
    text-transform: none;
}
.btn-primary {
    background: var(--text);
    box-shadow: none;
    border-radius: 6px;
}
html[data-theme="dark"] .btn-primary { background: #e8edf6; color: #0d1321; }
.btn-primary:hover { filter: none; opacity: .85; }
.btn-outline-secondary { border-radius: 6px; }
.form-control, .form-select { border-radius: 6px; }

/* ===== 登录页 ===== */
.login-page {
    min-height: 100vh;
    margin: 0;
    background: #060a14; /* 深色底：图片未覆盖区域均为此色 */
    overflow: hidden;
}
.login-scene {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}
.login-bg {
    position: absolute;
    inset: 0;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
}
.login-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(120deg, rgba(4, 8, 18, .78) 0%, rgba(4, 8, 18, .35) 45%, rgba(4, 8, 18, .55) 100%),
        radial-gradient(900px 600px at 75% 110%, rgba(30, 79, 216, .18), transparent 60%);
}
.lg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: .55;
    pointer-events: none;
}
.orb-1 {
    width: 520px; height: 520px;
    left: -120px; top: -140px;
    background: radial-gradient(circle, rgba(79, 140, 255, .55), transparent 70%);
    animation: drift1 16s ease-in-out infinite alternate;
}
.orb-2 {
    width: 460px; height: 460px;
    right: -100px; bottom: -120px;
    background: radial-gradient(circle, rgba(139, 124, 248, .5), transparent 70%);
    animation: drift2 20s ease-in-out infinite alternate;
}
.orb-3 {
    width: 320px; height: 320px;
    left: 38%; top: 18%;
    background: radial-gradient(circle, rgba(56, 189, 248, .35), transparent 70%);
    animation: drift3 24s ease-in-out infinite alternate;
}
.lg-sweep {
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg, transparent 42%, rgba(255, 255, 255, .10) 50%, transparent 58%);
    background-size: 250% 250%;
    animation: sweep 11s ease-in-out infinite;
    pointer-events: none;
}
@keyframes drift1 {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(90px, 70px) scale(1.18); }
}
@keyframes drift2 {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(-80px, -60px) scale(1.15); }
}
@keyframes drift3 {
    from { transform: translate(0, 0) scale(1); opacity: .35; }
    to   { transform: translate(60px, 40px) scale(1.25); opacity: .5; }
}
@keyframes sweep {
    0%   { background-position: 120% 50%; }
    55%  { background-position: -80% 50%; }
    100% { background-position: -80% 50%; }
}
.login-card-wrap { position: relative; z-index: 2; width: 100%; max-width: 400px; }
.login-card {
    border-radius: 20px;
    padding: 38px 34px 26px;
    background: linear-gradient(135deg, rgba(255, 255, 255, .46), rgba(255, 255, 255, .16));
    border: 1px solid rgba(255, 255, 255, .55);
    box-shadow: 0 24px 60px rgba(0, 0, 0, .30),
        inset 0 1px 0 rgba(255, 255, 255, .65),
        inset 0 -1px 0 rgba(255, 255, 255, .12);
    backdrop-filter: blur(42px) saturate(200%) brightness(1.06);
    -webkit-backdrop-filter: blur(42px) saturate(200%) brightness(1.06);
    color: #14213d;
}
html[data-theme="dark"] .login-card {
    background: linear-gradient(135deg, rgba(18, 24, 40, .48), rgba(18, 24, 40, .18));
    color: #e8edf6;
    border-color: rgba(255, 255, 255, .18);
}
.login-brand { text-align: center; margin-bottom: 26px; }
.login-logo {
    width: 54px; height: 54px;
    margin: 0 auto 14px;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.login-logo img {
    width: 100%; height: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 24px rgba(20, 24, 32, .35);
}
.login-title {
    font-family: "Noto Serif SC", "Songti SC", "STSong", serif;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 2px;
    text-shadow: 0 1px 2px rgba(255, 255, 255, .45);
}
.login-sub {
    font-size: 12px; color: #3f4a5a; letter-spacing: 1px; margin-top: 4px;
    text-shadow: 0 1px 2px rgba(255, 255, 255, .45);
}
html[data-theme="dark"] .login-title { text-shadow: 0 1px 2px rgba(0, 0, 0, .35); }
html[data-theme="dark"] .login-sub { color: #a9b8cd; text-shadow: 0 1px 2px rgba(0, 0, 0, .35); }
.login-foot {
    margin-top: 14px;
    text-align: center;
    border-top: 1px solid rgba(0, 0, 0, .06);
    padding-top: 10px;
}
html[data-theme="dark"] .login-foot { border-color: rgba(255, 255, 255, .08); }
.login-foot .btn-link { color: #667085; font-size: 12.5px; text-decoration: none; }
html[data-theme="dark"] .login-foot .btn-link { color: #94a3b8; }
.login-beian {
    position: absolute;
    left: 0; right: 0; bottom: 16px;
    text-align: center;
    z-index: 3;
    font-size: 12px;
}
.login-beian a { color: rgba(255, 255, 255, .75); text-decoration: none; }
.login-beian a:hover { color: #fff; }
.site-footer {
    max-width: 1460px;
    margin: 0 auto;
    padding: 22px 32px 28px;
    display: flex;
    justify-content: center;
    gap: 18px;
    color: var(--muted);
    font-size: 12.5px;
    border-top: 1px solid var(--border);
}
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.login-card .form-control {
    background: rgba(255, 255, 255, .55);
    border-color: rgba(255, 255, 255, .75);
    backdrop-filter: blur(8px);
}
html[data-theme="dark"] .login-card .form-control {
    background: rgba(10, 16, 30, .42);
    border-color: rgba(255, 255, 255, .14);
}
.login-card .btn-primary { background: linear-gradient(135deg, #1e4fd8, #4f46e5); color: #fff; }
html[data-theme="dark"] .login-card .btn-primary { background: linear-gradient(135deg, #5b8cff, #8b7cf8); color: #fff; }
}

/* ===== 标题与卡片 ===== */
.page-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    gap: 12px;
    flex-wrap: wrap;
}
.page-head h2 { margin: 0; font-size: 20px; font-weight: 700; }

.card {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    box-shadow: var(--shadow);
}
.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    padding: 14px 20px;
}
.card-body { padding: 20px; }

.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow);
    transition: transform .16s ease, box-shadow .16s ease;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.stat-icon {
    width: 46px; height: 46px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 21px;
    flex-shrink: 0;
}
.stat-num { font-size: 23px; font-weight: 800; line-height: 1.1; }
.stat-label { font-size: 12.5px; color: var(--muted); }

.case-card { position: relative; transition: transform .16s ease, box-shadow .16s ease; }
.case-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.value-label { color: var(--muted); font-size: 12.5px; }
html[data-theme="dark"] .value-label { color: #a9b8cd; }

/* 项目全周期工作台 */
.wb-tile {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 3px;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    height: 100%;
    transition: border-color .15s ease, background .15s ease;
}
.wb-tile i { font-size: 18px; color: var(--accent); margin-bottom: 4px; }
.wb-tile span { font-size: 13px; font-weight: 500; }
.wb-tile em {
    font-style: normal;
    font-size: 11px;
    color: var(--muted);
}
.wb-tile:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
}

/* 深色模式文字提亮 */
html[data-theme="dark"] .text-muted { color: #9fb0c3 !important; }
html[data-theme="dark"] .text-secondary { color: #a7b4c4 !important; }
html[data-theme="dark"] .text-success { color: #4ade80 !important; }
html[data-theme="dark"] .text-primary { color: #60a5fa !important; }
html[data-theme="dark"] .text-info { color: #38bdf8 !important; }
html[data-theme="dark"] .text-warning { color: #fbbf24 !important; }
html[data-theme="dark"] .text-danger { color: #f87171 !important; }

/* ===== 表格 ===== */
.table { color: var(--text); }
.table thead th {
    font-size: 12.5px;
    color: var(--muted);
    letter-spacing: .3px;
    white-space: nowrap;
    font-weight: 600;
}
.table td { font-size: 13.5px; vertical-align: middle; }
.table-hover tbody tr:hover { background: var(--bg-soft); }
.table-light { --bs-table-bg: var(--bg-soft); --bs-table-color: var(--text); }
.table-bordered { border-color: var(--border); }
.table-bordered > :not(caption) > * { border-color: var(--border); }

/* ===== 表单 ===== */
.form-control, .form-select {
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 9px;
    padding: 8px 12px;
}
.form-control:focus, .form-select:focus {
    background: var(--card);
    color: var(--text);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-control::placeholder { color: var(--muted); opacity: .7; }
.form-label { font-weight: 500; font-size: 13px; color: var(--text); }
.form-text { color: var(--muted); }
.form-check-input:checked { background-color: var(--accent); border-color: var(--accent); }

.btn { border-radius: 9px; font-size: 13.5px; }
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border: none;
    box-shadow: 0 4px 12px rgba(30, 79, 216, .25);
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-outline-secondary { color: var(--muted); border-color: var(--border); }
.btn-outline-secondary:hover { background: var(--bg-soft); color: var(--text); }

.form-section {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}
.form-section h6 {
    font-weight: 700;
    font-size: 15px;
    letter-spacing: .3px;
    padding-bottom: 12px;
    margin-bottom: 18px;
    border-bottom: 1px solid var(--border);
}

.tizi-public { max-width: 900px; margin: 0 auto; padding: 40px 16px; }
.badge { font-weight: 500; }
.bg-primary-subtle { background: var(--accent-soft) !important; }
.list-group-item { background: transparent; color: var(--text); border-color: var(--border); }
.alert { border-radius: 11px; }
.alert-light { background: var(--bg-soft); border-color: var(--border); color: var(--text); }
.progress { background: var(--bg-soft); }
.ai-result { line-height: 1.9; white-space: pre-line; font-size: 14.5px; }

/* 全周期时间轴 */
.flow-timeline { position: relative; padding: 12px 0 20px; }
.flow-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0; bottom: 0;
    width: 3px;
    transform: translateX(-50%);
    background: linear-gradient(180deg, var(--accent), var(--accent-2));
    border-radius: 3px;
}
.tl-row { position: relative; display: flex; align-items: center; margin-bottom: 24px; width: 100%; }
.tl-marker { position: absolute; left: 50%; transform: translateX(-50%); z-index: 2; width: 44px; display: flex; justify-content: center; }
.tl-node {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 16px;
    box-shadow: 0 4px 12px rgba(30, 79, 216, .35);
    border: 3px solid var(--card);
}
.tl-card { position: relative; width: calc(50% - 48px); margin-left: auto; }
.tl-left .tl-card { margin-left: 0; margin-right: auto; }
.tl-card::after {
    content: '';
    position: absolute;
    top: 20px;
    width: 14px; height: 14px;
    background: var(--card);
    border-top: 1px solid var(--border);
    border-right: 1px solid var(--border);
    transform: rotate(45deg);
}
.tl-right .tl-card::after { left: -8px; }
.tl-left .tl-card::after { right: -8px; }

/* 首页价值区域 */
.value-card { border-left: 4px solid var(--accent); }

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: rgba(120, 130, 150, .35); border-radius: 5px; }
::-webkit-scrollbar-track { background: transparent; }

@media (max-width: 992px) {
    .app-content { padding: 20px 16px 48px; }
    .flow-timeline::before { left: 20px; }
    .tl-marker { left: 20px; transform: translateX(-50%); }
    .tl-card { width: calc(100% - 56px); margin-left: 56px !important; margin-right: 0 !important; }
    .tl-left .tl-card::after, .tl-right .tl-card::after { left: -8px; right: auto; }
}