:root {
    --bg: #0f1220;
    --bg-soft: #171b2e;
    --panel: rgba(255, 255, 255, 0.08);
    --panel-solid: #171c31;
    --card: rgba(255, 255, 255, 0.92);
    --text: #f3f5ff;
    --text-dark: #161b2d;
    --muted: #a8b1d6;
    --muted-dark: #66708f;
    --border: rgba(255,255,255,0.12);
    --border-dark: #e7e9f4;
    --primary: #8b5cf6;
    --primary-2: #ec4899;
    --primary-dark: #7c3aed;
    --secondary-bg: rgba(139, 92, 246, 0.12);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --success: #22c55e;
    --success-bg: rgba(34, 197, 94, 0.12);
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.26);
    --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(139, 92, 246, 0.34), transparent 30%),
        radial-gradient(circle at top right, rgba(236, 72, 153, 0.24), transparent 28%),
        linear-gradient(180deg, #12162a 0%, #0c1020 100%);
    min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }

.page-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(18px);
    background: rgba(10, 13, 24, 0.7);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.08rem;
}

.brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    box-shadow: 0 12px 28px rgba(139, 92, 246, 0.35);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.main-nav a,
.nav-user {
    color: var(--muted);
}

.main-nav a:hover {
    color: #fff;
}

.page-body {
    flex: 1;
    padding: 34px 0 60px;
}

.site-footer {
    border-top: 1px solid var(--border);
    padding: 24px 0 40px;
    background: rgba(8, 11, 21, 0.5);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}

.footer-copy {
    color: var(--muted);
    margin-top: 6px;
}

.hero {
    border: 1px solid var(--border);
    background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
    box-shadow: var(--shadow);
    border-radius: 30px;
    padding: 28px;
}

.home-hero-layout {
    --hero-side-size: clamp(220px, 24vw, 300px);
    display: grid;
    grid-template-columns: var(--hero-side-size) minmax(0, 1fr);
    gap: 135px;
    align-items: stretch;
    margin-bottom: 28px;
}

.hero-large {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(240px, 0.82fr);
    gap: 18px;
    align-items: center;
    margin-bottom: 0;
}

.hero-visual-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.16);
    background: rgba(255, 255, 255, 0.08);
    padding: 14px;
    aspect-ratio: 1 / 1;
    position: relative;
    align-self: stretch;
    min-height: var(--hero-side-size);
    display: flex;
    overflow: hidden;
}

.hero-visual-stage {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
}

.hero-visual-image {
    width: 88%;
    height: 88%;
    display: block;
    object-fit: contain;
    padding: clamp(10px, 1.6vw, 18px);
    filter: drop-shadow(0 12px 22px rgba(15, 23, 42, 0.14));
    transition: transform 0.3s ease;
}

.hero-visual-card:hover .hero-visual-image {
    transform: scale(1.05);
}

.hero-text {
    min-width: 0;
}

.hero-card-main {
    min-width: 0;
    min-height: var(--hero-side-size);
}

.hero h1 {
    margin: 10px 0 14px;
    font-size: clamp(36px, 6vw, 56px);
    line-height: 1.05;
}

.hero p,
.meta,
.hint,
.switch-auth,
.empty-state,
.login-tip,
.footer-copy {
    color: var(--muted);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #d8c9ff;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.78rem;
    font-weight: 700;
}

.hero-actions,
.toolbar-actions,
.toolbar-actions-row,
.row-actions,
.interact-row,
.meta-row,
.card-footer,
.detail-header,
.admin-toolbar,
.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
}

.hero-panel {
    display: grid;
    gap: 14px;
}

.stat-card,
.card,
.form-card,
.detail-card,
.table-card,
.comment-item,
.login-tip,
.interact-panel {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.stat-card {
    background: rgba(255, 255, 255, 0.08);
    padding: 18px;
    display: grid;
    gap: 6px;
}

.stat-card strong {
    font-size: 2rem;
}

.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 18px;
}

.card,
.form-card,
.detail-card,
.table-card,
.comment-item,
.login-tip,
.interact-panel {
    background: var(--card);
    color: var(--text-dark);
    border-color: rgba(19, 23, 39, 0.06);
}

.post-card {
    overflow: hidden;
}

.card-cover {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(139,92,246,0.18), rgba(236,72,153,0.14));
}

.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
}

.post-card:hover .card-cover img {
    transform: scale(1.04);
}

.cover-placeholder,
.video-placeholder {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    gap: 4px;
    color: var(--muted-dark);
    font-weight: 700;
}

.video-placeholder span:first-child {
    font-size: 2.2rem;
}

.card-body {
    padding: 18px;
}

.card-body h2,
.detail-header h1,
.auth-header h1,
.admin-toolbar h1,
.section-head h2,
.media-block h2 {
    margin: 0;
}

.card-body h2 {
    margin-top: 6px;
    font-size: 1.15rem;
    line-height: 1.45;
}

.excerpt,
.detail-content,
.comment-body {
    line-height: 1.75;
}

.excerpt {
    color: var(--muted-dark);
    margin: 12px 0 0;
}

.card-footer {
    margin-top: 16px;
    color: var(--muted-dark);
}

.text-link {
    color: var(--primary-dark);
    font-weight: 700;
}

.form-card,
.detail-card,
.table-card {
    padding: 24px;
}

.form-card.narrow {
    max-width: 520px;
    margin: 0 auto;
}

.auth-card {
    background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(250,248,255,0.96));
}

.auth-header {
    margin-bottom: 18px;
}

.form-grid {
    display: grid;
    gap: 16px;
}

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

label {
    display: grid;
    gap: 8px;
    color: var(--text-dark);
    font-weight: 600;
}

input[type='text'],
input[type='password'],
textarea,
input[type='file'] {
    width: 100%;
    border: 1px solid var(--border-dark);
    border-radius: 16px;
    padding: 13px 14px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-dark);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
textarea:focus {
    border-color: rgba(124, 58, 237, 0.5);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.12);
}

textarea {
    resize: vertical;
    min-height: 140px;
}

.button {
    appearance: none;
    border: none;
    border-radius: 14px;
    padding: 11px 16px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform 0.18s ease, opacity 0.18s ease, background 0.18s ease;
}

.button:hover { transform: translateY(-1px); }
.button.primary {
    color: white;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
}
.button.secondary {
    background: rgba(139, 92, 246, 0.12);
    color: #5b21b6;
}
.button.ghost {
    background: rgba(255,255,255,0.12);
    color: var(--text);
    border: 1px solid var(--border);
}
.form-card .button.ghost,
.table-card .button.ghost,
.detail-card .button.ghost,
.comment-item .button.ghost,
.login-tip .button.ghost,
.interact-panel .button.ghost {
    color: var(--text-dark);
    border-color: var(--border-dark);
    background: white;
}
.button.danger {
    background: var(--danger-bg);
    color: #b91c1c;
}
.button.small {
    padding: 9px 12px;
    font-size: 0.92rem;
}

.alert {
    border-radius: 16px;
    padding: 14px 16px;
    margin-bottom: 18px;
    border: 1px solid transparent;
}
.alert.error {
    background: rgba(239, 68, 68, 0.12);
    color: #fecaca;
    border-color: rgba(239, 68, 68, 0.25);
}
.form-card .alert.error,
.detail-card .alert.error,
.table-card .alert.error {
    color: #b91c1c;
}
.alert.success {
    background: rgba(34, 197, 94, 0.12);
    color: #c9f7d5;
    border-color: rgba(34, 197, 94, 0.25);
}

.badge,
.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 0.88rem;
    font-weight: 700;
}

.badge.ok,
.chip {
    background: rgba(139, 92, 246, 0.12);
    color: #5b21b6;
}

.badge.muted {
    background: #eceff8;
    color: #566079;
}

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

.chip.large {
    font-size: 0.95rem;
    padding: 10px 14px;
}

.detail-card {
    display: grid;
    gap: 24px;
}

.detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 20px;
    align-items: start;
}

.detail-header {
    align-items: flex-start;
}

.detail-content {
    font-size: 1.03rem;
}

.media-block {
    display: grid;
    gap: 14px;
}

.video-grid,
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}

.post-video,
.gallery-item {
    border-radius: 18px;
    overflow: hidden;
    background: #0f1220;
    border: 1px solid rgba(19, 23, 39, 0.08);
}

.post-video {
    width: 100%;
    max-height: 520px;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.interact-panel,
.comments-section {
    display: grid;
    gap: 16px;
}

.interact-panel {
    padding: 20px 24px;
}

.comments-panel {
    gap: 20px;
}

.comments-toolbar {
    display: grid;
    gap: 6px;
}

.comments-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.comments-title-row h2 {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.comments-title-row h2 span {
    color: #8fa0c5;
    font-size: 1.05rem;
    font-weight: 700;
}

.comments-tabs {
    display: flex;
    align-items: center;
    gap: 14px;
    color: #8fa0c5;
    font-size: 0.95rem;
}

.comments-tabs .is-active {
    color: var(--text-dark);
    font-weight: 700;
}

.comment-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #ffd4e8, #d4e8ff);
    color: #6b4fa1;
    font-size: 1.1rem;
    font-weight: 800;
    box-shadow: 0 8px 24px rgba(131, 145, 190, 0.18);
}

.comment-avatar-link {
    display: inline-flex;
}

.comment-avatar--me {
    background: linear-gradient(135deg, #ffd4d4, #ffe8b5);
    color: #9a4f4f;
}

.comment-compose {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
}

.comment-compose__body {
    display: grid;
    gap: 12px;
}

.comment-compose__input,
.inline-reply-form__input {
    min-height: 0;
    resize: none;
    border-radius: 18px;
    border: 1px solid #e7ecf4;
    background: #f5f7fb;
    padding: 16px 18px;
    box-shadow: none;
}

.comment-compose__input {
    min-height: 72px;
    font-size: 1.02rem;
}

.comment-compose__input::placeholder,
.inline-reply-form__input::placeholder {
    color: #8b9ab7;
}

.comment-compose__actions,
.inline-reply-form__actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.comment-compose__tip {
    color: #8fa0c5;
    font-size: 0.92rem;
}

.comment-compose__submit {
    min-width: 120px;
}

.comment-thread-list {
    display: grid;
    gap: 22px;
}

.comment-thread {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 14px;
    align-items: start;
}

.comment-thread__main {
    display: grid;
    gap: 10px;
    padding-bottom: 18px;
    border-bottom: 1px solid #edf1f6;
}

.comment-thread__head,
.comment-thread__author,
.comment-thread__meta {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.comment-thread__author strong {
    font-size: 1rem;
}

.comment-user-link {
    color: inherit;
}

.comment-user-link:hover {
    color: #4f67a0;
}

.comment-reply-mark {
    color: #7f92b3;
    font-size: 0.94rem;
}

.comment-thread__content {
    line-height: 1.85;
    color: #1f2c46;
    word-break: break-word;
}

.comment-thread__meta {
    color: #8fa0c5;
    font-size: 0.94rem;
}

.comment-inline-form {
    margin: 0;
}

.comment-inline-action {
    appearance: none;
    border: none;
    background: transparent;
    padding: 0;
    color: #6f87af;
    font-weight: 700;
    cursor: pointer;
}

.comment-inline-action:hover {
    color: #4f67a0;
}

.comment-inline-action.danger {
    color: #d04b4b;
}

.comment-inline-action.danger:hover {
    color: #ae2f2f;
}

.comment-thread__children {
    margin-top: 6px;
    padding-left: 12px;
    display: grid;
    gap: 18px;
    border-left: 2px solid #eef2f8;
}

.comment-thread.is-nested .comment-thread__main {
    padding-bottom: 14px;
}

.inline-reply-form {
    display: grid;
    gap: 10px;
    margin-top: 6px;
    padding: 16px 18px;
    border-radius: 20px;
    border: 1px solid #e9eef6;
    background: linear-gradient(180deg, #fcfdff, #f7faff);
}

.inline-reply-form[hidden] {
    display: none !important;
}

.inline-reply-form__hint {
    color: #6f87af;
    font-weight: 700;
    font-size: 0.95rem;
}

.inline-reply-form__input {
    min-height: 96px;
    background: white;
}

.profile-card {
    display: grid;
    gap: 20px;
}

.profile-hero {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.profile-avatar {
    width: 84px;
    height: 84px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #ffd5c8, #ffeaa7);
    color: #8a4f2d;
    font-size: 2rem;
    font-weight: 800;
    box-shadow: 0 16px 30px rgba(188, 119, 58, 0.18);
}

.profile-summary {
    display: grid;
    gap: 12px;
    padding: 16px 18px;
    border: 1px solid #e7e9f4;
    border-radius: 18px;
    background: linear-gradient(180deg, #fff, #faf7ff);
}

.profile-summary__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.profile-summary__row strong {
    word-break: break-all;
}

.login-tip {
    padding: 18px;
}

.ai-summary-card {
    padding: 20px;
    display: grid;
    gap: 16px;
    position: sticky;
    top: 92px;
    background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(247,244,255,0.98));
}

.ai-summary-top,
.ai-summary-header {
    display: grid;
    gap: 8px;
}

.ai-summary-header h2 {
    margin: 0;
}

.ai-summary-button {
    width: 100%;
}

.ai-summary-button.is-loading {
    opacity: 0.82;
    cursor: wait;
}

.ai-summary-box {
    border-radius: 18px;
    border: 1px solid #e7e9f4;
    background: linear-gradient(180deg, #ffffff, #f8f4ff);
    padding: 16px;
    min-height: 170px;
}

.ai-summary-placeholder,
.ai-summary-content {
    line-height: 1.8;
}

.ai-summary-placeholder {
    color: var(--muted-dark);
}

.ai-summary-content {
    color: var(--text-dark);
    white-space: normal;
}

.ai-summary-meta {
    color: var(--muted-dark);
    font-size: 0.92rem;
}

.ai-summary-status {
    border-radius: 14px;
    padding: 12px 14px;
    font-size: 0.94rem;
}

.ai-summary-status.is-info {
    background: rgba(139, 92, 246, 0.1);
    color: #5b21b6;
}

.ai-summary-status.is-success {
    background: rgba(34, 197, 94, 0.12);
    color: #166534;
}

.ai-summary-status.is-error {
    background: rgba(239, 68, 68, 0.12);
    color: #b91c1c;
}

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

.table th,
.table td {
    padding: 14px 10px;
    text-align: left;
    border-bottom: 1px solid #edf0f7;
}

.table th {
    color: var(--muted-dark);
    font-size: 0.92rem;
}

.empty-state {
    padding: 28px;
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    text-align: center;
    background: rgba(255,255,255,0.04);
}

.empty-state.compact {
    background: #f9fafc;
    color: var(--muted-dark);
    border-color: #e7e9f4;
}

.switch-auth a,
.section-head .meta,
.meta-row .meta,
.admin-toolbar .meta,
.detail-header .meta,
.login-tip a {
    color: var(--muted-dark);
}

.submit-row,
.back-row {
    display: flex;
    justify-content: flex-start;
}

@media (max-width: 880px) {
    .home-hero-layout,
    .hero-large,
    .two-col-form {
        grid-template-columns: 1fr;
    }

    .hero-visual-card {
        max-width: 280px;
        width: 100%;
        margin: 0 auto;
        min-height: auto;
    }

    .detail-layout {
        grid-template-columns: 1fr;
    }

    .ai-summary-card {
        position: static;
    }

    .table-card {
        overflow-x: auto;
    }
}

@media (max-width: 640px) {
    .container {
        width: min(100% - 20px, 1180px);
    }

    .hero,
    .form-card,
    .detail-card,
    .table-card {
        padding: 18px;
        border-radius: 20px;
    }

    .header-inner {
        min-height: 64px;
    }

    .main-nav {
        gap: 10px;
    }

    .post-grid {
        grid-template-columns: 1fr;
    }

    .interact-panel {
        padding: 18px;
    }

    .comment-compose,
    .comment-thread {
        grid-template-columns: 1fr;
    }

    .comment-avatar,
    .comment-avatar--me {
        width: 42px;
        height: 42px;
        font-size: 1rem;
    }

    .comment-thread__children {
        padding-left: 10px;
    }

    .comment-compose__actions,
    .inline-reply-form__actions,
    .comments-title-row {
        align-items: flex-start;
        flex-direction: column;
    }

    .profile-hero,
    .profile-summary__row {
        align-items: flex-start;
        flex-direction: column;
    }
}