:root { --ink: #17191a; --paper: #f2f0ea; --white: #fffef9; --red: #e33224; --muted: #777972; --line: rgba(23,25,26,.13); }
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.admin-shell { min-height: 100vh; display: grid; grid-template-columns: 250px 1fr; }
.admin-sidebar { position: fixed; inset: 0 auto 0 0; width: 250px; display: flex; flex-direction: column; padding: 28px 22px; background: var(--ink); color: white; }
.admin-brand { display: flex; align-items: center; gap: 13px; padding-bottom: 25px; border-bottom: 1px solid rgba(255,255,255,.13); }
.admin-brand > span { display: grid; place-items: center; width: 42px; height: 42px; background: var(--red); font-weight: 900; }
.admin-brand b { font-size: 15px; letter-spacing: .08em; }
.admin-brand small { display: block; margin-top: 3px; color: rgba(255,255,255,.4); font-size: 7px; letter-spacing: .16em; }
.admin-sidebar nav { flex: 1; margin-top: 24px; overflow-y: auto; }
.admin-sidebar nav a, .admin-sidebar nav span { display: block; padding: 9px 12px; font-size: 12px; }
.admin-sidebar nav a { color: rgba(255,255,255,.66); border-left: 2px solid transparent; }
.admin-sidebar nav a:hover { color: white; border-left-color: var(--red); background: rgba(255,255,255,.05); }
.admin-sidebar nav span { margin-top: 14px; color: var(--red); font-size: 9px; font-weight: 800; letter-spacing: .16em; }
.admin-sidebar form button { width: 100%; padding: 10px; border: 1px solid rgba(255,255,255,.18); background: transparent; color: rgba(255,255,255,.65); cursor: pointer; }
.admin-main { grid-column: 2; min-width: 0; }
.admin-main > header { height: 108px; display: flex; align-items: center; justify-content: space-between; padding: 0 45px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.45); }
.admin-main > header small, .welcome-card small { color: var(--red); font-size: 8px; font-weight: 800; letter-spacing: .18em; }
.admin-main > header h1 { margin: 5px 0 0; font-family: "Noto Serif SC", "Songti SC", serif; font-size: 28px; }
.admin-main > header a { padding: 9px 14px; border: 1px solid var(--line); font-size: 11px; }
.admin-content { padding: 36px 45px 70px; }
.welcome-card { display: flex; justify-content: space-between; align-items: center; padding: 36px; background: var(--ink); color: white; }
.welcome-card h2 { margin: 8px 0; font: 500 28px "Noto Serif SC", "Songti SC", serif; }
.welcome-card p { margin: 0; color: rgba(255,255,255,.48); font-size: 12px; }
.welcome-card a { padding: 13px 20px; background: var(--red); font-size: 12px; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; margin-top: 22px; }
.stat-grid a { min-height: 150px; display: flex; flex-direction: column; justify-content: space-between; padding: 24px; background: var(--white); border-top: 2px solid var(--ink); transition: transform .2s; }
.stat-grid a:hover { transform: translateY(-4px); border-color: var(--red); }
.stat-grid span { color: var(--muted); font-size: 12px; }
.stat-grid strong { font: 500 42px Georgia, serif; }
.login-page { min-height: 100vh; display: grid; grid-template-columns: 1.1fr .9fr; background: var(--ink); color: white; }
.login-art { position: relative; overflow: hidden; background: linear-gradient(145deg, #252a2c, #0f1112); }
.login-art::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px); background-size: 58px 58px; }
.login-art > span { position: absolute; width: 430px; height: 430px; left: 50%; top: 50%; border: 70px solid var(--red); border-left-color: transparent; border-radius: 50%; transform: translate(-50%, -50%) rotate(30deg); }
.login-art > i { position: absolute; width: 110px; height: 110px; left: 50%; top: 50%; background: #dce43c; transform: translate(-50%, -50%) rotate(45deg); }
.login-art > b { position: absolute; left: 34px; bottom: 30px; color: rgba(255,255,255,.45); font: 800 10px/1.4 monospace; letter-spacing: .17em; }
.login-panel { display: flex; flex-direction: column; justify-content: center; padding: 70px clamp(40px, 8vw, 120px); background: var(--paper); color: var(--ink); }
.login-back { position: absolute; top: 30px; font-size: 11px; color: var(--muted); }
.login-heading small { color: var(--red); font: 800 9px monospace; letter-spacing: .18em; }
.login-heading h1 { margin: 12px 0 10px; font: 600 52px "Noto Serif SC", "Songti SC", serif; }
.login-heading p { margin: 0 0 38px; color: var(--muted); font-size: 13px; }
.admin-form label { display: block; margin-bottom: 18px; }
.admin-form label > span { display: block; margin-bottom: 7px; font-size: 11px; font-weight: 700; }
.admin-form input, .admin-form textarea, .admin-form select { width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 0; outline: none; background: var(--white); }
.admin-form input:focus, .admin-form textarea:focus, .admin-form select:focus { border-color: var(--ink); box-shadow: 0 0 0 2px rgba(23,25,26,.08); }
.admin-form button { width: 100%; padding: 14px; border: 0; background: var(--red); color: white; font-weight: 750; cursor: pointer; }
.captcha-control { display: grid !important; grid-template-columns: 1fr 140px; gap: 10px; margin: 0 !important; }
.captcha-control button { width: 140px; padding: 0; border: 1px solid var(--line); background: var(--white); }
.captcha-control img { display: block; width: 140px; height: 44px; }
.form-alert { margin-bottom: 20px; padding: 12px 14px; border-left: 3px solid var(--red); background: rgba(227,50,36,.08); color: #a42319; font-size: 12px; }
.notice { margin-bottom: 20px; padding: 13px 16px; border-left: 3px solid; background: var(--white); font-size: 12px; }
.notice-success { border-color: #32715e; color: #245446; }
.notice-error { border-color: var(--red); color: #a42319; }
.toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.toolbar p { margin: 0; color: var(--muted); font-size: 12px; }
.toolbar > a { padding: 11px 18px; background: var(--red); color: white; font-size: 12px; font-weight: 700; }
.table-card { overflow-x: auto; background: var(--white); border-top: 2px solid var(--ink); }
.table-card table { width: 100%; border-collapse: collapse; font-size: 12px; }
.table-card th, .table-card td { padding: 15px 17px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.table-card th { color: var(--muted); font-size: 10px; letter-spacing: .08em; }
.table-card td:nth-child(2) { max-width: 360px; font-weight: 650; }
.table-actions { display: flex; align-items: center; gap: 12px; white-space: nowrap; }
.table-actions a { color: #256170; }
.table-actions form { display: inline; }
.table-actions button { padding: 0; border: 0; background: none; color: var(--red); cursor: pointer; }
.table-empty { padding: 60px !important; color: var(--muted); text-align: center !important; }
.form-card { max-width: 980px; padding: 35px; background: var(--white); border-top: 2px solid var(--ink); }
.form-section { display: grid; grid-template-columns: 190px 1fr; gap: 25px; margin: 35px 0 22px; padding-top: 26px; border-top: 1px solid var(--line); }
.form-section:first-of-type { margin-top: 0; padding-top: 0; border: 0; }
.form-section h2 { margin: 0; font: 600 22px "Noto Serif SC", "Songti SC", serif; }
.form-section p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field-wide { grid-column: 1 / -1; }
.admin-form textarea { resize: vertical; line-height: 1.7; }
.admin-form label > small { display: block; min-height: 18px; margin-top: 5px; color: #32715e; font-size: 10px; }
.checkbox-field { display: flex !important; align-items: center; gap: 9px; padding: 12px 0; }
.checkbox-field input { width: 17px; height: 17px; margin: 0; accent-color: var(--red); }
.checkbox-field span { margin: 0 !important; }
.upload-control { display: grid; grid-template-columns: 1fr auto; }
.upload-control > input { min-width: 0; }
.upload-button { position: relative; display: grid !important; place-items: center; min-width: 100px; margin: 0 !important; background: var(--ink); color: white; font-size: 11px; cursor: pointer; }
.upload-button input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.form-actions { display: flex; align-items: center; justify-content: flex-end; gap: 18px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--line); }
.form-actions a { color: var(--muted); font-size: 11px; }
.form-actions button { width: auto; min-width: 145px; }
@media (max-width: 760px) {
    .admin-shell { display: block; }
    .admin-sidebar { position: static; width: auto; }
    .admin-sidebar nav { display: none; }
    .admin-main { width: 100%; }
    .admin-main > header, .admin-content { padding-left: 20px; padding-right: 20px; }
    .stat-grid { grid-template-columns: 1fr 1fr; }
    .login-page { grid-template-columns: 1fr; }
    .login-art { display: none; }
    .login-panel { min-height: 100vh; padding: 70px 28px; }
    .toolbar { align-items: flex-start; flex-direction: column; gap: 15px; }
    .form-card { padding: 22px; }
    .form-section, .field-grid { grid-template-columns: 1fr; }
    .field-wide { grid-column: auto; }
}