:root {
    color-scheme: light;
    --brand-slate: #314657;
    --brand-slate-dark: #243847;
    --brand-slate-deep: #132636;
    --brand-orange: #f58220;
    --brand-orange-soft: #ffad5c;
    --bg: #f6f8fb;
    --bg-2: #edf2f6;
    --surface: rgba(255, 255, 255, 0.92);
    --surface-strong: #ffffff;
    --surface-soft: rgba(49, 70, 87, 0.055);
    --border: rgba(49, 70, 87, 0.14);
    --border-strong: rgba(245, 130, 32, 0.32);
    --text: #172838;
    --muted: #617284;
    --muted-2: #8996a3;
    --cyan: var(--brand-orange);
    --emerald: var(--brand-slate);
    --amber: var(--brand-orange);
    --rose: #d66a2c;
    --shadow: 0 22px 70px rgba(32, 52, 68, 0.13);
    --radius: 8px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0;
    background: var(--bg);
    color: var(--text);
}

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

button,
input,
textarea,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

img {
    display: block;
    max-width: 100%;
}

svg {
    width: 18px;
    height: 18px;
}

.marketing-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at 14% 8%, rgba(245, 130, 32, 0.12), transparent 26%),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 48%, #edf2f6 100%),
        repeating-linear-gradient(90deg, rgba(49, 70, 87, 0.055) 0, rgba(49, 70, 87, 0.055) 1px, transparent 1px, transparent 120px);
}

.marketing-nav,
.app-shell,
.hero-section,
.landing-section {
    width: min(1180px, calc(100% - 40px));
    margin-inline: auto;
}

.marketing-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 22px 0;
}

.marketing-nav nav,
.nav-actions,
.hero-actions,
.landing-links,
.composer-actions,
.topbar,
.panel-title,
.post-header,
.question-card header,
.profile-preview {
    display: flex;
    align-items: center;
}

.marketing-nav nav {
    gap: 22px;
    color: var(--muted);
    font-size: 14px;
}

.brand-lockup {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.brand-logo {
    width: 188px;
    height: 48px;
    object-fit: contain;
    padding: 0;
    border-radius: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
}

.brand-lockup strong {
    display: block;
    font-size: 14px;
    line-height: 1.05;
}

.brand-lockup small {
    display: block;
    color: var(--muted);
    font-size: 12px;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(49, 70, 87, 0.96), rgba(245, 130, 32, 0.34));
    border: 1px solid var(--border-strong);
    color: #fff3e7;
    font-weight: 800;
    font-size: 13px;
}

.nav-actions,
.hero-actions {
    gap: 10px;
}

.primary-button,
.ghost-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 40px;
    padding: 0 15px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 700;
    line-height: 1;
    transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.primary-button {
    background: linear-gradient(135deg, var(--brand-orange), var(--brand-orange-soft));
    color: #172838;
    box-shadow: 0 12px 28px rgba(245, 130, 32, 0.2);
}

.primary-button:hover,
.ghost-button:hover {
    transform: translateY(-1px);
}

.ghost-button {
    background: #ffffff;
    color: var(--text);
    border-color: var(--border);
}

.large {
    min-height: 48px;
    padding-inline: 20px;
}

.full {
    width: 100%;
}

.hero-section {
    min-height: calc(100vh - 92px);
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(440px, 1.05fr);
    align-items: center;
    gap: 42px;
    padding: 34px 0 70px;
}

.coming-soon-section {
    width: min(960px, calc(100% - 40px));
    min-height: calc(100vh - 92px);
    display: grid;
    align-items: center;
    margin-inline: auto;
    padding: 50px 0 90px;
}

.coming-soon-copy {
    max-width: 760px;
}

.coming-soon-copy span {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    border: 1px solid rgba(245, 130, 32, 0.28);
    background: rgba(245, 130, 32, 0.11);
    color: #9a4b0f;
    font-size: 13px;
    font-weight: 800;
}

.coming-soon-copy h1 {
    margin: 18px 0 14px;
    max-width: 760px;
    font-size: 64px;
    line-height: 0.98;
    font-weight: 800;
}

.coming-soon-copy p {
    margin: 0;
    max-width: 620px;
    color: #4f6171;
    font-size: 19px;
}

.hero-copy h1 {
    margin: 0 0 12px;
    font-size: 64px;
    line-height: 0.98;
    font-weight: 800;
    max-width: 680px;
}

.hero-title {
    margin: 0 0 22px;
    color: var(--cyan);
    font-size: 17px;
    font-weight: 800;
}

.hero-text {
    margin: 0;
    max-width: 610px;
    color: #4f6171;
    font-size: 19px;
}

.hero-actions {
    margin-top: 30px;
    flex-wrap: wrap;
}

.landing-links {
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 26px;
}

.landing-links a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 38px;
    padding: 0 12px;
    border-radius: var(--radius);
    color: var(--muted);
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.78);
    font-size: 13px;
}

.hero-media {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    border: 1px solid rgba(245, 130, 32, 0.24);
    box-shadow: var(--shadow);
    background: #ffffff;
}

.hero-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(255,255,255,0.08), transparent 44%);
    pointer-events: none;
}

.hero-media img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.landing-section {
    padding: 84px 0;
    border-top: 1px solid rgba(49, 70, 87, 0.1);
}

.split {
    display: grid;
    grid-template-columns: 0.75fr 1.25fr;
    gap: 40px;
    align-items: center;
}

.landing-section h2,
.section-heading h2 {
    margin: 0 0 14px;
    font-size: 38px;
    line-height: 1.08;
}

.landing-section p,
.section-heading p {
    margin: 0;
    color: var(--muted);
    max-width: 650px;
}

.platform-preview {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 190px;
    gap: 14px;
    min-height: 330px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 18px 54px rgba(49, 70, 87, 0.11);
}

.preview-rail,
.live-feed-card,
.live-side {
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(49, 70, 87, 0.11);
    padding: 14px;
}

.preview-rail {
    display: grid;
    place-items: center;
    align-content: center;
    gap: 16px;
    padding-inline: 8px;
}

.rail-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(49, 70, 87, 0.18);
    transition: transform 0.25s ease, background 0.25s ease;
}

.rail-dot.active {
    transform: scale(1.5);
    background: var(--brand-orange);
    box-shadow: 0 0 0 6px rgba(245, 130, 32, 0.12);
}

.live-feed-card {
    display: grid;
    gap: 12px;
    overflow: hidden;
}

.live-topline,
.live-progress div {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.live-topline span,
.live-progress span,
.mini-stat span {
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
}

.live-topline strong,
.live-progress strong {
    color: var(--brand-orange);
    font-size: 13px;
}

.live-activity {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 76px;
    padding: 14px;
    border-radius: var(--radius);
    background: rgba(49, 70, 87, 0.045);
    border: 1px solid rgba(49, 70, 87, 0.1);
    opacity: 0.52;
    transform: translateX(0);
    transition: opacity 0.32s ease, transform 0.32s ease, border-color 0.32s ease, background 0.32s ease;
}

.live-activity.is-active {
    opacity: 1;
    transform: translateX(8px);
    border-color: rgba(245, 130, 32, 0.32);
    background: linear-gradient(135deg, rgba(245, 130, 32, 0.14), rgba(49, 70, 87, 0.075));
}

.live-icon {
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    color: var(--brand-orange);
    background: rgba(245, 130, 32, 0.14);
}

.live-activity strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text);
    font-size: 15px;
}

.live-activity span {
    display: block;
    color: var(--muted);
    font-size: 13px;
}

.live-progress {
    display: grid;
    gap: 9px;
    margin-top: 4px;
    padding: 14px;
    border-radius: var(--radius);
    background: rgba(49, 70, 87, 0.045);
}

.live-progress b {
    display: block;
    overflow: hidden;
    height: 9px;
    border-radius: 999px;
    background: rgba(49, 70, 87, 0.1);
}

.live-progress i {
    display: block;
    width: 64%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--brand-orange), var(--brand-orange-soft));
    transition: width 0.45s ease;
}

.live-side {
    display: grid;
    gap: 12px;
    align-content: start;
}

.mini-stat {
    display: grid;
    gap: 2px;
    padding: 12px;
    border-radius: var(--radius);
    background: rgba(49, 70, 87, 0.045);
}

.mini-stat strong {
    color: var(--text);
    font-size: 24px;
    line-height: 1;
}

.pulse-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 4px;
}

.pulse-stack span {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(245, 130, 32, 0.46);
    background: rgba(245, 130, 32, 0.14);
    color: #8a430d;
    font-size: 11px;
    font-weight: 800;
    animation: memberPulse 2.4s ease-in-out infinite;
}

.pulse-stack span:nth-child(2) { animation-delay: 0.35s; }
.pulse-stack span:nth-child(3) { animation-delay: 0.7s; }
.pulse-stack span:nth-child(4) { animation-delay: 1.05s; }

@keyframes memberPulse {
    0%, 100% {
        transform: translateY(0);
        box-shadow: none;
    }
    50% {
        transform: translateY(-4px);
        box-shadow: 0 0 0 6px rgba(245, 130, 32, 0.1);
    }
}

.section-heading {
    margin-bottom: 26px;
}

.expertise-grid,
.feature-row,
.lesson-grid,
.pdf-grid,
.member-grid,
.admin-grid,
.admin-lists {
    display: grid;
    gap: 16px;
}

.expertise-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.expertise-grid article,
.feature-row div,
.pdf-card,
.member-card,
.settings-card,
.auth-card,
.side-panel,
.post-card,
.composer-card,
.question-card,
.comments-panel,
.video-detail {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: 0 16px 50px rgba(49, 70, 87, 0.09);
}

.expertise-grid article,
.feature-row div {
    padding: 22px;
}

.expertise-grid i,
.feature-row i,
.pdf-icon {
    color: var(--cyan);
}

.expertise-grid h3,
.feature-row strong {
    display: block;
    margin: 14px 0 8px;
    font-size: 17px;
}

.expertise-grid p,
.feature-row span {
    color: var(--muted);
    font-size: 14px;
}

.cards-band {
    padding-bottom: 110px;
}

.feature-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.app-body {
    min-height: 100vh;
    background:
        radial-gradient(circle at 5% 0%, rgba(245, 130, 32, 0.1), transparent 24%),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 56%, #edf2f6 100%),
        repeating-linear-gradient(0deg, rgba(49, 70, 87, 0.04) 0, rgba(49, 70, 87, 0.04) 1px, transparent 1px, transparent 80px);
}

.app-shell {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 22px;
    padding: 18px 0 34px;
}

.sidebar {
    position: sticky;
    top: 18px;
    height: calc(100vh - 36px);
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 18px 56px rgba(49, 70, 87, 0.1);
}

.sidebar .brand-logo {
    width: 204px;
    height: 58px;
}

.side-nav {
    display: grid;
    gap: 6px;
}

.side-nav a,
.side-dropdown summary,
.mini-card {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 42px;
    padding: 0 11px;
    border-radius: var(--radius);
    color: var(--muted);
    font-size: 14px;
}

.side-dropdown {
    display: grid;
    gap: 6px;
}

.side-dropdown summary {
    justify-content: space-between;
    list-style: none;
    cursor: pointer;
}

.side-dropdown summary::-webkit-details-marker {
    display: none;
}

.side-dropdown summary span {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.side-dropdown summary > svg:last-child {
    width: 15px;
    height: 15px;
    transition: transform 0.18s ease;
}

.side-dropdown[open] summary > svg:last-child {
    transform: rotate(180deg);
}

.side-subnav {
    display: grid;
    gap: 4px;
    padding-left: 14px;
    border-left: 1px solid rgba(49, 70, 87, 0.12);
    margin-left: 14px;
}

.side-subnav a {
    min-height: 34px;
    padding: 0 9px;
    font-size: 13px;
}

.side-nav a.active,
.side-nav a:hover,
.side-dropdown summary.active,
.side-dropdown summary:hover,
.mini-card:hover {
    color: var(--text);
    background: rgba(245, 130, 32, 0.11);
}

.side-nav a.active,
.side-dropdown summary.active {
    border: 1px solid rgba(245, 130, 32, 0.28);
}

.sidebar-footer {
    display: grid;
    gap: 10px;
    margin-top: auto;
}

.app-main {
    min-width: 0;
}

.topbar {
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 22px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-height: 46px;
    padding: 0 14px;
    border-radius: var(--radius);
    color: var(--muted);
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid var(--border);
    box-shadow: 0 12px 32px rgba(49, 70, 87, 0.07);
}

.search-box input {
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
}

.search-box input:focus {
    box-shadow: none;
}

.search-submit {
    display: grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border: 0;
    border-radius: 6px;
    background: rgba(245, 130, 32, 0.16);
    color: var(--cyan);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-size: 14px;
    white-space: nowrap;
}

.avatar {
    display: inline-grid;
    place-items: center;
    flex: 0 0 auto;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--avatar) 24%, #ffffff);
    border: 1px solid color-mix(in srgb, var(--avatar) 58%, transparent);
    color: #172838;
    font-size: 12px;
    font-weight: 800;
}

.image-avatar {
    overflow: hidden;
    padding: 0;
    background: #ffffff;
}

.image-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rank-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    width: fit-content;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(49, 70, 87, 0.08);
    color: var(--brand-slate-dark);
    font-size: 11px;
    font-weight: 800;
}

.flash-message {
    display: flex;
    align-items: center;
    gap: 10px;
    width: min(1180px, calc(100% - 40px));
    margin: 12px auto;
    padding: 13px 15px;
    border-radius: var(--radius);
    border: 1px solid rgba(245, 130, 32, 0.32);
    background: rgba(245, 130, 32, 0.12);
    color: #7c3d0e;
}

.app-main > .flash-message {
    width: 100%;
    margin: 0 0 18px;
}

.flash-message.error {
    border-color: rgba(251, 113, 133, 0.36);
    background: rgba(251, 113, 133, 0.12);
}

.page-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 20px;
}

.page-head h1 {
    margin: 0 0 6px;
    font-size: 34px;
    line-height: 1.1;
}

.page-head p {
    margin: 0;
    color: var(--muted);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 330px;
    gap: 18px;
}

.feed-column,
.dashboard-aside,
.question-list {
    display: grid;
    gap: 16px;
    align-content: start;
}

.composer-card,
.post-card,
.question-card,
.comments-panel,
.video-detail,
.settings-card,
.auth-card,
.side-panel {
    padding: 18px;
}

.composer-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.composer-head span,
.post-header span,
.question-card header span,
.lesson-mini small,
.question-mini small,
.video-detail small,
.pdf-card small,
.admin-row small {
    display: block;
    color: var(--muted);
    font-size: 12px;
}

input,
textarea,
select {
    width: 100%;
    border: 1px solid rgba(49, 70, 87, 0.16);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.92);
    color: var(--text);
    outline: 0;
    padding: 12px 13px;
}

textarea {
    resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px rgba(245, 130, 32, 0.14);
}

.composer-card input,
.composer-card textarea {
    margin-bottom: 10px;
}

.composer-actions {
    justify-content: space-between;
    gap: 10px;
}

.composer-actions select {
    max-width: 190px;
}

.post-header,
.question-card header {
    gap: 10px;
    margin-bottom: 14px;
}

.post-header small,
.question-card header small {
    margin-left: auto;
    padding: 5px 8px;
    border-radius: 999px;
    background: rgba(245, 130, 32, 0.12);
    color: #9a4b0f;
    font-size: 12px;
}

.question-card header small.ok {
    background: rgba(49, 70, 87, 0.1);
    color: var(--brand-slate-dark);
}

.post-card h2,
.question-card h2,
.video-detail h1,
.comments-panel h2,
.settings-card h2,
.auth-card h1,
.pdf-card h2,
.member-card h2 {
    margin: 0 0 10px;
    font-size: 20px;
    line-height: 1.22;
}

.post-card p,
.question-card p,
.video-detail p,
.pdf-card p,
.auth-card p,
.member-card p {
    margin: 0;
    color: #526474;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    color: var(--muted);
    font-size: 13px;
}

.post-meta span,
.pdf-mini,
.lesson-mini,
.question-mini {
    display: flex;
    align-items: center;
}

.comment-list,
.answer-list {
    display: grid;
    gap: 10px;
    margin-top: 14px;
}

.comment-item,
.answer-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px;
    border-radius: var(--radius);
    background: rgba(49, 70, 87, 0.045);
}

.comment-item p,
.answer-item p {
    font-size: 14px;
}

.comment-item.large {
    padding: 14px 0;
    background: transparent;
    border-bottom: 1px solid rgba(49, 70, 87, 0.1);
}

.answer-item.solution {
    border: 1px solid rgba(245, 130, 32, 0.24);
    background: rgba(245, 130, 32, 0.08);
}

.inline-comment {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 40px;
    gap: 8px;
    margin-top: 14px;
}

.inline-comment.expanded {
    grid-template-columns: minmax(0, 1fr) 48px;
    margin-bottom: 12px;
}

.inline-comment button {
    display: grid;
    place-items: center;
    border-radius: var(--radius);
    border: 0;
    background: rgba(245, 130, 32, 0.18);
    color: var(--cyan);
}

.panel-title {
    justify-content: space-between;
    margin-bottom: 14px;
}

.panel-title h2 {
    margin: 0;
    font-size: 15px;
}

.panel-title a {
    color: var(--cyan);
    font-size: 13px;
    font-weight: 700;
}

.lesson-mini,
.question-mini,
.pdf-mini {
    gap: 10px;
    padding: 11px 0;
    border-top: 1px solid rgba(49, 70, 87, 0.1);
}

.lesson-mini span {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: var(--radius);
    background: rgba(245, 130, 32, 0.13);
    color: var(--cyan);
}

.lesson-mini strong,
.question-mini strong {
    display: block;
    font-size: 13px;
    line-height: 1.25;
}

.pdf-mini {
    color: var(--brand-slate-dark);
    font-size: 13px;
}

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

.lesson-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.lesson-card {
    overflow: hidden;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
}

.lesson-thumb {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 160px;
    background:
        linear-gradient(135deg, rgba(245, 130, 32, 0.16), rgba(49, 70, 87, 0.11)),
        #f1f5f8;
}

.lesson-thumb i {
    width: 44px;
    height: 44px;
    color: var(--cyan);
}

.lesson-thumb span {
    position: absolute;
    right: 12px;
    bottom: 12px;
    padding: 5px 8px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.78);
    color: var(--brand-slate-dark);
    font-size: 12px;
}

.lesson-body,
.pdf-card,
.member-card {
    padding: 18px;
}

.lesson-body small {
    color: var(--emerald);
    font-weight: 800;
}

.lesson-body h2 {
    margin: 8px 0;
    font-size: 19px;
}

.lesson-body p {
    min-height: 66px;
    color: var(--muted);
    font-size: 14px;
}

.lesson-body div {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 18px;
    color: var(--cyan);
    font-size: 13px;
    font-weight: 800;
}

.video-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 310px;
    gap: 18px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    color: var(--muted);
    font-size: 14px;
}

.video-player {
    overflow: hidden;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #101820;
    aspect-ratio: 16 / 9;
}

.video-player iframe,
.video-player video {
    width: 100%;
    height: 100%;
}

.video-player iframe {
    border: 0;
}

.video-player video {
    background: #000;
}

.video-detail {
    margin-top: 16px;
}

.video-detail small {
    color: var(--emerald);
    font-weight: 800;
}

.comments-panel {
    margin-top: 16px;
}

.two-column,
.admin-grid,
.admin-lists {
    grid-template-columns: 360px minmax(0, 1fr);
}

.admin-lists.single {
    grid-template-columns: 1fr;
}

.sticky-card {
    position: sticky;
    top: 18px;
    align-self: start;
}

.pdf-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pdf-card {
    display: grid;
    gap: 12px;
}

.pdf-icon {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border-radius: var(--radius);
    background: rgba(245, 130, 32, 0.14);
}

.member-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.member-card {
    text-align: center;
}

.member-card .avatar {
    width: 54px;
    height: 54px;
    margin: 0 auto 14px;
    font-size: 16px;
}

.member-card div {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 14px;
    color: var(--muted);
    font-size: 12px;
}

.settings-card {
    display: grid;
    gap: 14px;
    max-width: 720px;
}

.admin-grid .settings-card {
    max-width: none;
}

.settings-card label,
.form-stack label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}

.file-help {
    color: var(--muted-2);
    font-size: 12px;
    font-weight: 600;
}

.profile-preview {
    gap: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(49, 70, 87, 0.1);
}

.profile-preview span {
    display: block;
    color: var(--muted);
    font-size: 13px;
}

.auth-screen {
    width: min(460px, calc(100% - 40px));
    min-height: calc(100vh - 90px);
    display: grid;
    place-items: center;
    margin: 0 auto;
    padding: 30px 0 80px;
}

.auth-card {
    width: 100%;
}

.auth-card h1 {
    font-size: 32px;
}

.form-stack {
    display: grid;
    gap: 13px;
    margin-top: 20px;
}

.check-line {
    display: flex !important;
    grid-template-columns: none !important;
    align-items: center;
    gap: 9px !important;
}

.check-line input {
    width: 16px;
    height: 16px;
}

.auth-switch {
    margin-top: 18px !important;
    color: var(--muted) !important;
    font-size: 14px;
}

.auth-switch a {
    color: var(--cyan);
    font-weight: 800;
}

.admin-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 0;
    border-top: 1px solid rgba(49, 70, 87, 0.1);
}

.stack-row {
    display: grid;
    justify-content: stretch;
}

.stack-row p,
.muted-line {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
}

.inline-admin-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
}

.inline-admin-form select {
    min-width: 130px;
}

.tag-list,
.video-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.admin-module-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 18px;
}

.admin-module-nav a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 38px;
    padding: 0 11px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.82);
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
}

.admin-module-nav a.active,
.admin-module-nav a:hover {
    color: var(--text);
    border-color: rgba(245, 130, 32, 0.28);
    background: rgba(245, 130, 32, 0.11);
}

.admin-dashboard-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.admin-stat-card {
    display: grid;
    align-content: start;
    gap: 8px;
    min-height: 150px;
    padding: 18px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: 0 16px 50px rgba(49, 70, 87, 0.09);
}

.admin-stat-card i {
    color: var(--cyan);
}

.admin-stat-card strong {
    font-size: 34px;
    line-height: 1;
}

.admin-stat-card span {
    color: var(--text);
    font-weight: 800;
}

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

.tag-chip {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    min-height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--tag) 16%, #ffffff);
    border: 1px solid color-mix(in srgb, var(--tag) 42%, transparent);
    color: var(--brand-slate-dark);
    font-size: 12px;
    font-weight: 800;
}

.video-actions {
    margin-top: 18px;
}

.ok {
    color: var(--brand-slate-dark);
}

.event-list,
.announcement-list {
    display: grid;
    gap: 16px;
}

.event-card,
.tool-card {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: 0 16px 50px rgba(49, 70, 87, 0.09);
}

.event-card {
    display: grid;
    grid-template-columns: 86px minmax(0, 1fr);
    gap: 16px;
    padding: 18px;
}

.event-date {
    display: grid;
    place-items: center;
    align-content: center;
    min-height: 86px;
    border-radius: var(--radius);
    background: rgba(245, 130, 32, 0.13);
    color: var(--brand-slate-dark);
}

.event-date strong {
    font-size: 30px;
    line-height: 1;
}

.event-date span {
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
}

.event-body header {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 12px;
}

.event-body h2,
.tool-card h2 {
    margin: 4px 0 0;
    font-size: 21px;
}

.event-body small,
.tool-card small {
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
}

.event-body p,
.tool-card p {
    color: var(--muted);
}

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

.tool-card {
    display: grid;
    align-content: start;
    gap: 12px;
    padding: 20px;
}

.tool-card > i {
    width: 38px;
    height: 38px;
    padding: 9px;
    border-radius: var(--radius);
    background: rgba(245, 130, 32, 0.14);
    color: var(--cyan);
}

.empty-state {
    display: grid;
    place-items: center;
    min-height: 180px;
    padding: 28px;
    color: var(--muted);
    border-radius: var(--radius);
    border: 1px dashed rgba(148, 163, 184, 0.24);
}

.empty-state.compact {
    min-height: 90px;
}

@media (max-width: 1100px) {
    .hero-section,
    .split,
    .dashboard-grid,
    .video-layout,
    .two-column,
    .admin-grid,
    .admin-lists,
    .admin-dashboard-grid {
        grid-template-columns: 1fr;
    }

    .hero-section {
        min-height: auto;
    }

    .expertise-grid,
    .feature-row,
    .lesson-grid,
    .pdf-grid,
    .member-grid,
    .tool-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sticky-card,
    .sidebar {
        position: static;
    }

    .sidebar {
        height: auto;
    }
}

@media (max-width: 820px) {
    .marketing-nav {
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .brand-logo {
        width: 176px;
        height: 46px;
    }

    .marketing-nav nav {
        order: 3;
        width: 100%;
        overflow-x: auto;
        padding-bottom: 4px;
    }

    .app-shell {
        grid-template-columns: 1fr;
        width: min(100% - 24px, 1180px);
    }

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

    .sidebar-footer {
        grid-template-columns: 1fr 1fr;
    }

    .topbar {
        align-items: stretch;
        flex-direction: column;
    }

    .page-head {
        align-items: flex-start;
        flex-direction: column;
    }

    .hero-copy h1 {
        font-size: 46px;
    }

    .coming-soon-copy h1 {
        font-size: 46px;
    }

    .hero-section,
    .landing-section,
    .marketing-nav {
        width: min(100% - 24px, 1180px);
    }

    .platform-preview {
        grid-template-columns: 1fr;
    }

    .preview-rail {
        grid-template-columns: repeat(4, 1fr);
        min-height: 38px;
    }

    .live-activity.is-active {
        transform: none;
    }
}

@media (max-width: 620px) {
    .expertise-grid,
    .feature-row,
    .lesson-grid,
    .pdf-grid,
    .member-grid,
    .tool-grid {
        grid-template-columns: 1fr;
    }

    .event-card,
    .event-body header {
        grid-template-columns: 1fr;
        flex-direction: column;
    }

    .hero-copy h1 {
        font-size: 38px;
    }

    .coming-soon-copy h1 {
        font-size: 38px;
    }

    .hero-text {
        font-size: 17px;
    }

    .hero-actions,
    .nav-actions {
        width: 100%;
    }

    .hero-actions a,
    .nav-actions a {
        flex: 1;
    }

    .composer-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .composer-actions select {
        max-width: none;
    }

    .side-nav,
    .sidebar-footer {
        grid-template-columns: 1fr;
    }

    .post-header,
    .question-card header {
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .post-header small,
    .question-card header small {
        margin-left: 44px;
    }
}