:root {
    --ink: #142033;
    --muted: #667085;
    --line: #dde4ee;
    --bg: #f7f9fc;
    --panel: #ffffff;
    --primary: #1457d9;
    --accent: #0f766e;
    --danger: #c03232;
    --radius: 8px;
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: min(1160px, calc(100% - 32px));
    margin: 0 auto;
}

.nav {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
}

.nav-inner,
.footer-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 20px;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    color: #fff;
    background: var(--primary);
    font-size: 14px;
}

.nav nav {
    display: flex;
    gap: 22px;
    color: #344054;
    font-size: 15px;
}

.hero {
    background:
        linear-gradient(135deg, rgba(20, 87, 217, 0.08), rgba(15, 118, 110, 0.08)),
        #fff;
    border-bottom: 1px solid var(--line);
}

.hero-grid {
    min-height: 560px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 56px;
    padding: 56px 0;
}

.eyebrow,
.section-heading span {
    color: var(--accent);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

.hero h1 {
    max-width: 760px;
    margin: 14px 0 20px;
    font-size: clamp(38px, 6vw, 64px);
    line-height: 1.08;
    letter-spacing: 0;
}

.hero p {
    max-width: 680px;
    color: #475467;
    font-size: 18px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 32px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 20px;
    border-radius: 8px;
    border: 1px solid var(--line);
    font-weight: 700;
}

.btn.primary {
    color: #fff;
    border-color: var(--primary);
    background: var(--primary);
}

.btn.ghost {
    color: var(--ink);
    background: #fff;
}

.hero-panel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.metric {
    min-height: 168px;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 18px 60px rgba(20, 32, 51, 0.08);
}

.metric strong {
    display: block;
    margin-bottom: 12px;
    color: var(--primary);
    font-size: 32px;
}

.metric span {
    color: var(--muted);
}

.section {
    padding: 76px 0;
}

.section.muted {
    background: #eef4f8;
}

.section-heading {
    max-width: 680px;
    margin-bottom: 28px;
}

.section-heading h2 {
    margin: 8px 0 10px;
    font-size: 34px;
    line-height: 1.2;
}

.section-heading p {
    color: var(--muted);
}

.software-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.software-card,
.link-row,
.admin-card,
.form-card,
.table-wrap {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
}

.software-card {
    overflow: hidden;
}

.software-top {
    min-height: 116px;
    padding: 18px;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    font-weight: 800;
}

.software-top em {
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.22);
    font-size: 12px;
    font-style: normal;
}

.software-body {
    padding: 20px;
}

.software-body h3 {
    margin-bottom: 8px;
    font-size: 20px;
}

.software-body p {
    color: #475467;
}

.software-body small {
    display: block;
    min-height: 56px;
    color: var(--muted);
}

.software-body a {
    display: inline-flex;
    margin-top: 18px;
    color: var(--primary);
    font-weight: 800;
}

.link-list {
    display: grid;
    gap: 12px;
}

.link-row {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 18px;
    align-items: center;
    padding: 18px 20px;
}

.link-row span {
    color: var(--muted);
}

.site-footer {
    background: #111827;
    color: #d8dee9;
}

.site-footer strong {
    color: #fff;
}

.footer-copy {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.footer-copy a {
    color: #d8dee9;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.admin-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 236px 1fr;
}

.sidebar {
    padding: 24px;
    background: #101828;
    color: #fff;
}

.sidebar .brand {
    margin-bottom: 34px;
}

.sidebar nav {
    display: grid;
    gap: 8px;
}

.sidebar nav a {
    padding: 11px 12px;
    border-radius: 8px;
    color: #d0d5dd;
}

.sidebar nav a.active,
.sidebar nav a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.admin-main {
    padding: 32px;
}

.admin-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    margin-bottom: 24px;
}

.admin-top h1 {
    margin: 0;
    font-size: 30px;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.admin-card {
    padding: 22px;
}

.admin-card strong {
    display: block;
    font-size: 32px;
}

.admin-card span {
    color: var(--muted);
}

.form-card {
    padding: 22px;
    margin-bottom: 22px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.field {
    display: grid;
    gap: 7px;
}

.field.full {
    grid-column: 1 / -1;
}

label {
    font-weight: 700;
}

input,
select,
textarea {
    width: 100%;
    min-height: 42px;
    border: 1px solid #cfd8e3;
    border-radius: 8px;
    padding: 9px 11px;
    color: var(--ink);
    background: #fff;
    font: inherit;
}

input[type="checkbox"] {
    width: auto;
    min-height: auto;
    margin-right: 8px;
}

textarea {
    min-height: 96px;
    resize: vertical;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 18px;
}

.table-wrap {
    overflow: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 13px 14px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    background: #f2f5f9;
    color: #475467;
    font-size: 13px;
}

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

.text-btn {
    border: 0;
    padding: 0;
    color: var(--primary);
    background: transparent;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.text-btn.danger {
    color: var(--danger);
}

.flash {
    margin-bottom: 18px;
    padding: 12px 14px;
    border-radius: 8px;
    color: #065f46;
    background: #d1fae5;
}

.flash.error {
    color: #991b1b;
    background: #fee2e2;
}

.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background: linear-gradient(135deg, #eef4ff, #effaf7);
}

.login-card {
    width: min(420px, 100%);
    padding: 30px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: 0 18px 60px rgba(20, 32, 51, 0.12);
}

@media (max-width: 980px) {
    .hero-grid,
    .admin-shell {
        grid-template-columns: 1fr;
    }

    .software-grid,
    .admin-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sidebar {
        position: static;
    }
}

@media (max-width: 680px) {
    .nav-inner,
    .footer-inner,
    .admin-top {
        align-items: flex-start;
        flex-direction: column;
    }

    .nav nav {
        flex-wrap: wrap;
    }

    .hero-grid {
        min-height: auto;
        gap: 28px;
    }

    .hero-panel,
    .software-grid,
    .admin-grid,
    .form-grid,
    .link-row {
        grid-template-columns: 1fr;
    }

    .admin-main {
        padding: 22px 16px;
    }
}