:root {
  --bg: #eef2f7;
  --panel: rgba(255, 255, 255, 0.72);
  --panel-strong: rgba(255, 255, 255, 0.9);
  --panel-solid: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --soft: #94a3b8;
  --line: rgba(148, 163, 184, 0.18);
  --line-strong: rgba(148, 163, 184, 0.28);
  --accent: #0a84ff;
  --accent-2: #3b82f6;
  --accent-soft: rgba(10, 132, 255, 0.1);
  --green: #30d158;
  --orange: #ff9f0a;
  --red: #ff453a;
  --code-bg: #f4f7fb;
  --shadow-sm: 0 6px 18px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 16px 40px rgba(15, 23, 42, 0.1);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 24px;
  --content-width: 1120px;
  --article-width: 820px;
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "Fira Code", Consolas, monospace;
  --transition: 0.2s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(10, 132, 255, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(99, 102, 241, 0.1), transparent 24%),
    linear-gradient(180deg, #f7f9fc 0%, #eef2f7 100%);
  line-height: 1.75;
}
code, pre { font-family: var(--font-mono); }
a { color: var(--accent); text-decoration: none; transition: all var(--transition); }
a:hover { color: #0066cc; }
img { max-width: 100%; height: auto; border-radius: 14px; }

.container { max-width: var(--content-width); margin: 0 auto; padding: 0 24px; }
.content-shell { max-width: var(--article-width); margin: 0 auto; }

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 18px 0 14px;
  background: linear-gradient(180deg, rgba(238, 242, 247, 0.9), rgba(238, 242, 247, 0.55) 75%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
nav .nav-frame {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}
nav .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
}
nav .brand-dot {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}
nav .brand-dot i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: block;
}
nav .brand-dot i:nth-child(1) { background: var(--red); }
nav .brand-dot i:nth-child(2) { background: var(--orange); }
nav .brand-dot i:nth-child(3) { background: var(--green); }
nav .nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  flex-wrap: wrap;
}
nav .nav-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 14px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
}
nav .nav-links .nav-icon {
  font-size: 1rem;
  line-height: 1;
}
nav .nav-links a:hover {
  background: rgba(255,255,255,0.75);
  color: var(--text);
}
nav .nav-links a.active {
  background: linear-gradient(180deg, rgba(10,132,255,0.18), rgba(10,132,255,0.1));
  color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(10,132,255,0.12);
}

.hero-board {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 18px;
  margin: 18px 0 28px;
}
.hero-card,
.hero-side,
.glass-card,
.kanban-column,
.article-card,
.section-card,
.search-card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.hero-card {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  padding: 28px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background:
    radial-gradient(circle at 18% 22%, rgba(10, 132, 255, 0.12), transparent 28%),
    radial-gradient(circle at 82% 18%, rgba(99, 102, 241, 0.1), transparent 24%),
    linear-gradient(135deg, rgba(255,255,255,0.78), rgba(255,255,255,0.62));
}
.hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px),
    radial-gradient(circle at 16% 32%, rgba(10, 132, 255, 0.18) 0 2px, transparent 3px),
    radial-gradient(circle at 34% 58%, rgba(99, 102, 241, 0.14) 0 2px, transparent 3px),
    radial-gradient(circle at 72% 26%, rgba(10, 132, 255, 0.14) 0 2px, transparent 3px),
    radial-gradient(circle at 82% 62%, rgba(99, 102, 241, 0.12) 0 2px, transparent 3px),
    linear-gradient(122deg, transparent 21%, rgba(10, 132, 255, 0.08) 21.5%, rgba(10, 132, 255, 0.08) 22%, transparent 22.5%),
    linear-gradient(145deg, transparent 46%, rgba(99, 102, 241, 0.06) 46.5%, rgba(99, 102, 241, 0.06) 47%, transparent 47.5%),
    linear-gradient(90deg, transparent 67%, rgba(10, 132, 255, 0.06) 67.5%, rgba(10, 132, 255, 0.06) 68%, transparent 68.5%);
  background-size: 22px 22px, 22px 22px, auto, auto, auto, auto, auto, auto, auto;
  mask-image: linear-gradient(135deg, rgba(0,0,0,0.55), transparent 72%);
  -webkit-mask-image: linear-gradient(135deg, rgba(0,0,0,0.55), transparent 72%);
  pointer-events: none;
}
.hero-card::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -54px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.38), rgba(255,255,255,0) 68%);
  pointer-events: none;
}
.hero-card > * {
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.75);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
}
.hero-card h1 {
  margin-top: 16px;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}
.hero-card p {
  margin-top: 12px;
  color: var(--muted);
  max-width: 680px;
  font-size: 1rem;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
}
.hero-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 0.92rem;
}
.hero-button.primary {
  background: linear-gradient(180deg, #1b8cff, #0a84ff);
  color: #fff;
  box-shadow: 0 12px 24px rgba(10, 132, 255, 0.2);
}
.hero-button.secondary {
  background: rgba(255,255,255,0.75);
  color: var(--text);
  border: 1px solid var(--line);
}
.hero-side {
  border-radius: 28px;
  padding: 22px;
  display: grid;
  gap: 14px;
}
.hero-mini {
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255,255,255,0.72);
  border: 1px solid var(--line);
}
.hero-mini .label {
  color: var(--soft);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.hero-mini .value {
  margin-top: 8px;
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}
.hero-mini p {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.kanban-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 10px;
}
.kanban-column {
  border-radius: 24px;
  padding: 16px;
}
.kanban-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding: 4px 4px 8px;
}
.kanban-head h2 {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.kanban-count {
  min-width: 28px;
  padding: 3px 8px;
  text-align: center;
  border-radius: 999px;
  background: rgba(255,255,255,0.8);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}
.board-stack {
  display: grid;
  gap: 12px;
}
.post-card {
  display: block;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255,255,255,0.82);
  border: 1px solid rgba(255,255,255,0.7);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.post-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 30px rgba(15, 23, 42, 0.09);
  border-color: rgba(10, 132, 255, 0.24);
}
.post-card h3 {
  color: var(--text);
  font-size: 1rem;
  line-height: 1.4;
  letter-spacing: -0.02em;
}
.post-card .post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.8rem;
}
.post-card .post-summary {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.65;
}
.meta-pill,
.tag,
.category-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
}
.meta-pill { background: rgba(148, 163, 184, 0.12); color: var(--muted); }
.tag { background: rgba(10, 132, 255, 0.08); color: var(--accent); }
.category-pill { background: rgba(17, 24, 39, 0.06); color: var(--text); }

.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin: 20px 0 18px;
}
.section-header h1 {
  font-size: 2rem;
  letter-spacing: -0.04em;
  line-height: 1.1;
}
.section-header p {
  color: var(--muted);
  font-size: 0.95rem;
}

.article-card,
.section-card,
.search-card {
  border-radius: 28px;
  padding: 26px;
}
.post-header h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}
.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
  align-items: center;
  color: var(--muted);
  font-size: 0.9rem;
}
.post-content {
  margin-top: 28px;
  font-size: 1.05rem;
  line-height: 1.9;
}
.post-content h1,
.post-content h2,
.post-content h3 {
  margin: 1.8em 0 0.6em;
  letter-spacing: -0.03em;
  line-height: 1.25;
}
.post-content h1 { font-size: 1.8rem; }
.post-content h2 {
  font-size: 1.45rem;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.post-content h3 { font-size: 1.2rem; }
.post-content p { margin: 1.1em 0; }
.post-content ul,
.post-content ol { margin: 1em 0; padding-left: 24px; }
.post-content li { margin: 0.45em 0; }
.post-content blockquote {
  margin: 1.4em 0;
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  background: linear-gradient(180deg, rgba(10,132,255,0.08), rgba(10,132,255,0.03));
  border-radius: 0 14px 14px 0;
  color: #334155;
}
.post-content pre {
  margin: 1.5em 0;
  padding: 18px 20px;
  overflow-x: auto;
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.75);
  font-size: 0.9rem;
  line-height: 1.7;
}
.post-content code {
  padding: 3px 7px;
  border-radius: 8px;
  background: rgba(148,163,184,0.14);
  color: #0f172a;
  font-size: 0.9em;
}
.post-content pre code { padding: 0; background: transparent; }
.post-content img {
  display: block;
  margin: 1.8em auto;
  box-shadow: var(--shadow-md);
}
.post-content hr {
  border: 0;
  height: 1px;
  margin: 2.4em 0;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}
.post-content a {
  color: var(--accent);
  border-bottom: 1px solid rgba(10,132,255,0.2);
}

.search-form { margin: 16px 0 22px; }
.search-form input {
  width: 100%;
  padding: 16px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: rgba(255,255,255,0.84);
  font: inherit;
  color: var(--text);
  outline: none;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.75);
}
.search-form input:focus {
  border-color: rgba(10, 132, 255, 0.4);
  box-shadow: 0 0 0 4px rgba(10,132,255,0.08);
}
.search-results-count { color: var(--muted); margin-bottom: 14px; }

.empty-state {
  text-align: center;
  padding: 54px 20px;
  color: var(--muted);
}
.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  list-style: none;
  margin: 30px 0 12px;
  flex-wrap: wrap;
}
.pagination a {
  padding: 10px 14px;
  border-radius: 14px;
  background: rgba(255,255,255,0.75);
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 700;
}
.pagination a.active,
.pagination a:hover {
  color: var(--accent);
  border-color: rgba(10, 132, 255, 0.2);
  background: rgba(10,132,255,0.08);
}
.column-pagination {
  margin-top: 16px;
  margin-bottom: 0;
  justify-content: flex-start;
}
.column-pagination a {
  min-width: 40px;
  text-align: center;
  padding: 9px 12px;
  border-radius: 12px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
}

footer {
  margin-top: 56px;
  padding: 28px 0 42px;
  color: var(--muted);
  font-size: 0.88rem;
  text-align: center;
}

.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  justify-content: center;
  align-items: center;
  padding: 30px;
  background: rgba(15, 23, 42, 0.84);
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 92%;
  max-height: 92%;
  border-radius: 18px;
}
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(255,255,255,0.82);
  border: 1px solid var(--line);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
}
.back-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.admin-layout,
.admin-sidebar,
.admin-main,
.admin-table,
.admin-form,
.btn,
.login-page,
.login-box,
.toast,
.page-header,
.field-row,
.toolbar,
.sidebar-brand,
.sidebar-divider,
.status {
  /* 后台保留原先结构所需基础兼容 */
}

.admin-layout {
  display: flex;
  min-height: 100vh;
  background: linear-gradient(180deg, #f6f8fb 0%, #edf2f7 100%);
}
.admin-sidebar {
  width: 240px;
  flex-shrink: 0;
  padding: 22px 14px;
  background: rgba(255,255,255,0.82);
  border-right: 1px solid var(--line);
  box-shadow: 8px 0 24px rgba(15, 23, 42, 0.04);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 10px 14px;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.admin-sidebar ul {
  list-style: none;
  display: grid;
  gap: 6px;
}
.admin-sidebar li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-radius: 14px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
}
.admin-sidebar li a:hover {
  color: var(--text);
  background: rgba(255,255,255,0.82);
}
.admin-sidebar li a.active {
  color: var(--accent);
  background: rgba(10,132,255,0.1);
  box-shadow: inset 0 0 0 1px rgba(10,132,255,0.08);
}
.sidebar-divider {
  height: 1px;
  margin: 14px 10px;
  background: var(--line);
}
.admin-main {
  flex: 1;
  padding: 30px;
  min-width: 0;
}
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}
.page-header h1 {
  font-size: 1.75rem;
  line-height: 1.1;
  letter-spacing: -0.04em;
}
.admin-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 20px;
  background: rgba(255,255,255,0.84);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.admin-table th,
.admin-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.admin-table th {
  color: var(--soft);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(248,250,252,0.9);
}
.admin-table tr:last-child td {
  border-bottom: 0;
}
.admin-table td {
  color: var(--text);
  font-size: 0.92rem;
}
.admin-table td a {
  font-weight: 600;
}
.admin-link-button {
  border: 0;
  background: transparent;
  padding: 0;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  color: var(--accent);
}
.admin-link-danger {
  color: #d32f2f;
}
.admin-filter-bar {
  margin-bottom: 18px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255,255,255,0.82);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.admin-filter-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(180px, 0.8fr) auto;
  gap: 12px;
  align-items: center;
}
.admin-filter-item input,
.admin-filter-item select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: rgba(255,255,255,0.92);
  color: var(--text);
  font: inherit;
  outline: none;
}
.admin-filter-item input:focus,
.admin-filter-item select:focus {
  border-color: rgba(10,132,255,0.4);
  box-shadow: 0 0 0 4px rgba(10,132,255,0.08);
}
.admin-filter-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.admin-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 22px;
  overflow-x: auto;
  padding-bottom: 2px;
}
.admin-stat-card {
  padding: 20px;
  border-radius: 18px;
  background: rgba(255,255,255,0.82);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.admin-stat-card .label {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.admin-stat-card .value {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}
.admin-pagination {
  justify-content: flex-end;
  margin-top: 18px;
}
.admin-pagination a {
  min-width: 40px;
  text-align: center;
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
}
.status::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}
.status.published {
  color: #067647;
  background: rgba(48, 209, 88, 0.12);
}
.status.published::before {
  background: #30d158;
}
.status.draft {
  color: #b45309;
  background: rgba(255, 159, 10, 0.16);
}
.status.draft::before {
  background: #ff9f0a;
}
.admin-form {
  padding: 24px;
  border-radius: 24px;
  background: rgba(255,255,255,0.84);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.admin-form .field {
  margin-bottom: 18px;
}
.admin-form label {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
}
.admin-form input[type=text],
.admin-form input[type=password],
.admin-form input[type=date],
.admin-form input[type=file],
.admin-form select,
.admin-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: rgba(255,255,255,0.9);
  color: var(--text);
  font: inherit;
  outline: none;
}
.admin-form textarea {
  min-height: 420px;
  resize: vertical;
  line-height: 1.7;
}
.admin-form input:focus,
.admin-form select:focus,
.admin-form textarea:focus {
  border-color: rgba(10,132,255,0.4);
  box-shadow: 0 0 0 4px rgba(10,132,255,0.08);
}
.field-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.toolbar button {
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,255,255,0.9);
  color: var(--text);
  font: inherit;
  font-size: 0.83rem;
  cursor: pointer;
}
.toolbar button:hover {
  background: rgba(10,132,255,0.08);
  border-color: rgba(10,132,255,0.16);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 16px;
  border-radius: 14px;
  border: 0;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(180deg, #1b8cff, #0a84ff);
  color: #fff;
  box-shadow: 0 12px 24px rgba(10,132,255,0.18);
}
.btn-secondary {
  background: rgba(255,255,255,0.88);
  color: var(--text);
  border: 1px solid var(--line);
}
.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}
.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-box {
  width: 100%;
  max-width: 420px;
  padding: 28px;
  border-radius: 28px;
  background: rgba(255,255,255,0.82);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  text-align: center;
}
.login-icon {
  width: 62px;
  height: 62px;
  margin: 0 auto 16px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  font-size: 1.6rem;
  background: rgba(10,132,255,0.1);
}
.login-box h1 {
  font-size: 1.5rem;
  letter-spacing: -0.03em;
}
.login-subtitle {
  margin: 8px 0 18px;
  color: var(--muted);
}
.login-box .error,
.toast {
  margin-bottom: 14px;
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 0.9rem;
  font-weight: 600;
}
.login-box .error,
.toast.error {
  background: rgba(255, 69, 58, 0.1);
  color: #b42318;
}
.toast.success {
  background: rgba(48, 209, 88, 0.12);
  color: #067647;
}

@media (max-width: 980px) {
  .hero-board,
  .kanban-board {
    grid-template-columns: 1fr;
  }
  .field-row {
    grid-template-columns: 1fr;
  }
  .admin-filter-grid {
    grid-template-columns: 1fr;
  }
  .admin-stat-grid {
    grid-template-columns: repeat(4, minmax(150px, 1fr));
  }
  .admin-pagination {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .container { padding: 0 16px; }
  nav { padding-top: 12px; }
  nav .nav-frame {
    padding: 12px 14px;
    border-radius: 18px;
    align-items: flex-start;
    flex-direction: column;
  }
  nav .nav-links {
    width: 100%;
    gap: 6px;
  }
  nav .nav-links a {
    padding: 9px 12px;
  }
  .hero-card,
  .hero-side,
  .section-card,
  .search-card,
  .article-card,
  .kanban-column {
    border-radius: 22px;
    padding: 18px;
  }
  .section-header {
    display: block;
  }
  .section-header p {
    margin-top: 8px;
  }
  .post-header h1 {
    font-size: 2rem;
  }
  .post-content {
    font-size: 1rem;
  }
  .admin-layout {
    display: block;
  }
  .admin-sidebar {
    width: 100%;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .admin-main {
    padding: 18px 16px 28px;
  }
  .admin-stat-grid {
    grid-template-columns: repeat(4, minmax(150px, 1fr));
  }
  .page-header {
    align-items: flex-start;
    flex-direction: column;
  }
}