:root {
    --vip-bg: #f6f4ef;
    --vip-surface: #ffffff;
    --vip-surface-soft: #f1eee6;
    --vip-border: #ddd5c7;
    --vip-text: #263127;
    --vip-muted: #6f7c71;
    --vip-primary: #6b8f80;
    --vip-primary-dark: #4f6f61;
    --vip-accent: #c9825d;
    --vip-success: #2f7a55;
    --vip-shadow: 0 20px 45px rgba(49, 56, 46, 0.08);
    --vip-shadow-soft: 0 12px 30px rgba(49, 56, 46, 0.06);
    --vip-dark-bg: #141916;
    --vip-dark-surface: #1b211d;
    --vip-dark-soft: #202723;
    --vip-dark-border: #303931;
    --vip-dark-text: #eef2ed;
    --vip-dark-muted: #a8b3ab;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body.vip-body,
body.vip-auth-body,
body.vip-player-body {
    margin: 0;
    color: var(--vip-text);
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(107, 143, 128, 0.12), transparent 28%),
        linear-gradient(180deg, #fbfaf7 0%, var(--vip-bg) 100%);
}

.vip-page-shell {
    min-height: 100vh;
}

.vip-container {
    width: min(1180px, calc(100% - 2rem));
    margin: 0 auto;
}

.vip-navbar {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(12px);
    background: rgba(251, 250, 247, 0.88);
    border-bottom: 1px solid rgba(221, 213, 199, 0.75);
}

.vip-navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 78px;
}

.vip-brand {
    color: var(--vip-text);
    text-decoration: none;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.vip-brand span {
    color: var(--vip-accent);
}

.vip-subtle-link {
    color: var(--vip-muted);
    text-decoration: none;
}

.vip-subtle-link:hover {
    color: var(--vip-primary-dark);
}

.vip-userbar {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    flex-wrap: wrap;
}

.vip-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.55rem 0.9rem;
    border-radius: 999px;
    background: rgba(107, 143, 128, 0.14);
    color: var(--vip-primary-dark);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.vip-btn,
.vip-btn-outline,
.vip-btn-accent,
.vip-btn-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    border-radius: 999px;
    border: 1px solid transparent;
    padding: 0.9rem 1.3rem;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.vip-btn:hover,
.vip-btn-outline:hover,
.vip-btn-accent:hover,
.vip-btn-light:hover {
    transform: translateY(-1px);
}

.vip-btn {
    background: var(--vip-primary);
    color: #fff;
    box-shadow: 0 14px 28px rgba(107, 143, 128, 0.2);
}

.vip-btn:hover {
    background: var(--vip-primary-dark);
    color: #fff;
}

.vip-btn-accent {
    background: var(--vip-accent);
    color: #fff;
    box-shadow: 0 14px 28px rgba(201, 130, 93, 0.18);
}

.vip-btn-accent:hover {
    background: #b9724d;
    color: #fff;
}

.vip-btn-outline {
    background: rgba(255, 255, 255, 0.7);
    border-color: var(--vip-border);
    color: var(--vip-text);
}

.vip-btn-outline:hover {
    border-color: var(--vip-primary);
    color: var(--vip-primary-dark);
}

.vip-btn-light {
    background: rgba(255, 255, 255, 0.88);
    color: var(--vip-text);
    border-color: rgba(255, 255, 255, 0.45);
}

.vip-btn-light:hover {
    background: #fff;
    color: var(--vip-text);
}

.vip-btn-sm {
    padding: 0.7rem 1rem;
    font-size: 0.92rem;
}

.vip-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr);
    gap: 1.4rem;
    padding: 2rem 0 1.4rem;
}

.vip-panel {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(221, 213, 199, 0.7);
    border-radius: 28px;
    box-shadow: var(--vip-shadow);
}

.vip-panel-soft {
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(221, 213, 199, 0.65);
    border-radius: 24px;
    box-shadow: var(--vip-shadow-soft);
}

.vip-hero-copy,
.vip-hero-side {
    padding: 2rem;
}

.vip-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.9rem;
    color: var(--vip-primary-dark);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.vip-title {
    margin: 0 0 0.8rem;
    font-size: clamp(2rem, 3vw, 3rem);
    line-height: 1.05;
}

.vip-subtitle {
    margin: 0;
    color: var(--vip-muted);
    font-size: 1.02rem;
    line-height: 1.7;
}

.vip-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1.4rem;
}

.vip-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin: 1.4rem 0 0;
}

.vip-stat-card {
    padding: 1rem 1.05rem;
    border-radius: 20px;
    background: rgba(241, 238, 230, 0.78);
    border: 1px solid rgba(221, 213, 199, 0.65);
}

.vip-stat-label {
    display: block;
    color: var(--vip-muted);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.45rem;
}

.vip-stat-value {
    display: block;
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--vip-text);
}

.vip-progress-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    margin-bottom: 0.75rem;
}

.vip-progress-label {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--vip-muted);
}

.vip-progress-value {
    font-size: 0.98rem;
    font-weight: 800;
    color: var(--vip-success);
}

.vip-progress {
    height: 12px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(107, 143, 128, 0.12);
}

.vip-progress-bar {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--vip-primary) 0%, var(--vip-success) 100%);
}

.vip-grid-section {
    padding: 0.6rem 0 3rem;
}

.vip-section-head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: end;
    margin-bottom: 1.3rem;
}

.vip-section-title {
    margin: 0;
    font-size: 1.45rem;
}

.vip-section-note {
    margin: 0.35rem 0 0;
    color: var(--vip-muted);
}

.vip-course-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.2rem;
}

.vip-course-card {
    overflow: hidden;
}

.vip-course-cover {
    width: 100%;
    height: 190px;
    object-fit: cover;
    display: block;
}

.vip-course-body {
    padding: 1.4rem;
}

.vip-course-title {
    margin: 0 0 0.55rem;
    font-size: 1.08rem;
    line-height: 1.35;
}

.vip-course-text {
    margin: 0 0 1.2rem;
    color: var(--vip-muted);
    line-height: 1.65;
}

.vip-empty {
    padding: 3.5rem 1.5rem;
    text-align: center;
    color: var(--vip-muted);
}

.vip-auth-wrap {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 2rem 1rem;
}

.vip-auth-shell {
    width: min(1040px, 100%);
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
    gap: 1.2rem;
}

.vip-auth-copy,
.vip-auth-card {
    padding: 2rem;
}

.vip-auth-highlights {
    display: grid;
    gap: 0.85rem;
    margin-top: 1.2rem;
}

.vip-auth-highlight {
    padding: 1rem 1.05rem;
    border-radius: 18px;
    background: rgba(241, 238, 230, 0.78);
    border: 1px solid rgba(221, 213, 199, 0.65);
}

.vip-form-label {
    display: block;
    font-size: 0.92rem;
    font-weight: 700;
    margin-bottom: 0.45rem;
}

.vip-input {
    width: 100%;
    border-radius: 16px;
    border: 1px solid var(--vip-border);
    background: #fff;
    padding: 0.95rem 1rem;
    color: var(--vip-text);
}

.vip-input:focus {
    outline: none;
    border-color: var(--vip-primary);
    box-shadow: 0 0 0 4px rgba(107, 143, 128, 0.12);
}

.vip-form-row {
    margin-bottom: 1rem;
}

.vip-alert {
    padding: 0.95rem 1rem;
    border-radius: 18px;
    border: 1px solid transparent;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.vip-alert-danger {
    background: rgba(190, 79, 69, 0.08);
    border-color: rgba(190, 79, 69, 0.18);
    color: #94443c;
}

.vip-alert-warning {
    background: rgba(201, 130, 93, 0.11);
    border-color: rgba(201, 130, 93, 0.18);
    color: #8f5e43;
}

.vip-player-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) 360px;
    min-height: 100vh;
    background: linear-gradient(180deg, #121714 0%, #171d19 100%);
    color: var(--vip-dark-text);
}

.vip-player-main {
    min-width: 0;
}

.vip-player-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.4rem;
    position: sticky;
    top: 0;
    z-index: 12;
    background: rgba(20, 25, 22, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(48, 57, 49, 0.88);
}

.vip-player-course {
    color: var(--vip-dark-muted);
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.vip-video-wrap {
    background: #0b0e0c;
    aspect-ratio: 16 / 9;
}

.vip-video-wrap iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.vip-player-content {
    width: min(980px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 1.5rem 0 3rem;
}

.vip-player-card {
    background: var(--vip-dark-surface);
    border: 1px solid var(--vip-dark-border);
    border-radius: 26px;
    box-shadow: 0 26px 55px rgba(0, 0, 0, 0.22);
}

.vip-player-head {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.6rem 1.6rem 0;
}

.vip-player-kicker {
    color: var(--vip-dark-muted);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.vip-player-title {
    margin: 0.35rem 0 0;
    font-size: clamp(1.8rem, 2.4vw, 2.4rem);
    line-height: 1.1;
}

.vip-player-copy {
    padding: 0 1.6rem 1.5rem;
}

.vip-html-content {
    margin-top: 1.2rem;
    background: #fff;
    color: #2f3730;
    border-radius: 24px;
    padding: 2rem;
    line-height: 1.8;
}

.vip-html-content img {
    max-width: 100%;
    height: auto;
    border-radius: 14px;
    margin: 1.25rem 0;
}

.vip-quiz-box,
.vip-finish-box,
.vip-success-box {
    margin-top: 1.2rem;
    padding: 1.6rem;
}

.vip-option {
    display: block;
    padding: 1rem 1rem 1rem 1.1rem;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: border-color 0.2s ease, background-color 0.2s ease;
    cursor: pointer;
}

.vip-option:hover {
    border-color: rgba(201, 130, 93, 0.5);
    background: rgba(255, 255, 255, 0.05);
}

.vip-player-sidebar {
    background: #171d19;
    border-left: 1px solid rgba(48, 57, 49, 0.9);
}

.vip-player-sidebar-head {
    position: sticky;
    top: 0;
    z-index: 10;
    padding: 1.15rem 1.25rem;
    background: rgba(23, 29, 25, 0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(48, 57, 49, 0.9);
}

.vip-player-sidebar-title {
    margin: 0;
    color: var(--vip-dark-text);
    font-size: 0.88rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.vip-lesson-link {
    display: flex;
    gap: 0.95rem;
    padding: 1rem 1.1rem;
    color: var(--vip-dark-muted);
    text-decoration: none;
    border-bottom: 1px solid rgba(48, 57, 49, 0.45);
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.vip-lesson-link:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--vip-dark-text);
}

.vip-lesson-link.active {
    background: rgba(107, 143, 128, 0.14);
    color: var(--vip-dark-text);
    border-left: 3px solid var(--vip-accent);
}

.vip-lesson-number {
    min-width: 2rem;
    color: rgba(255, 255, 255, 0.38);
    font-weight: 800;
}

.vip-course-detail-wrap {
    min-height: 100vh;
    padding: 2rem 0 3rem;
}

.vip-course-detail-card {
    padding: 2rem;
}

.vip-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin: 1.2rem 0 1.5rem;
}

.vip-detail-item {
    padding: 1rem;
    border-radius: 20px;
    background: rgba(241, 238, 230, 0.78);
    border: 1px solid rgba(221, 213, 199, 0.65);
}

.vip-detail-item small {
    display: block;
    color: var(--vip-muted);
    margin-bottom: 0.3rem;
}

.vip-center-note {
    text-align: center;
    color: var(--vip-muted);
}

.vip-footer-note {
    color: var(--vip-muted);
    text-align: center;
    padding: 2rem 0 3rem;
}

.vip-marketing-wrap {
    min-height: 100vh;
}

.vip-marketing-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.9fr);
    gap: 1.2rem;
    padding: 2rem 0 1.2rem;
}

.vip-offer-flag {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.6rem 0.95rem;
    border-radius: 999px;
    background: rgba(201, 130, 93, 0.12);
    color: #9e5f3e;
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.03em;
}

.vip-price-box {
    display: grid;
    gap: 0.45rem;
    margin-top: 1.3rem;
    padding: 1.1rem 1.2rem;
    border-radius: 22px;
    background: rgba(241, 238, 230, 0.86);
    border: 1px solid rgba(221, 213, 199, 0.72);
}

.vip-price-old {
    color: #b36559;
    text-decoration: line-through;
    font-weight: 700;
}

.vip-price-new {
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    line-height: 1;
    font-weight: 800;
    color: var(--vip-primary-dark);
}

.vip-price-caption {
    color: var(--vip-muted);
    font-weight: 700;
}

.vip-feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    padding: 0.6rem 0 2.4rem;
}

.vip-feature-card {
    padding: 1.25rem;
}

.vip-feature-icon {
    width: 52px;
    height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: rgba(107, 143, 128, 0.12);
    color: var(--vip-primary-dark);
    font-size: 1.25rem;
    margin-bottom: 0.9rem;
}

.vip-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.vip-tag {
    padding: 0.5rem 0.85rem;
    border-radius: 999px;
    background: rgba(107, 143, 128, 0.12);
    color: var(--vip-primary-dark);
    font-size: 0.8rem;
    font-weight: 700;
}

.vip-side-list {
    display: grid;
    gap: 0.85rem;
    margin: 1.15rem 0 1.3rem;
}

.vip-side-item {
    display: flex;
    gap: 0.85rem;
    align-items: start;
    padding: 0.95rem 1rem;
    border-radius: 18px;
    background: rgba(241, 238, 230, 0.78);
    border: 1px solid rgba(221, 213, 199, 0.65);
}

.vip-side-item i {
    color: var(--vip-primary-dark);
}

@media (max-width: 1080px) {
    .vip-hero,
    .vip-auth-shell,
    .vip-course-grid,
    .vip-marketing-hero,
    .vip-feature-grid {
        grid-template-columns: 1fr;
    }

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

    .vip-player-sidebar {
        border-left: 0;
        border-top: 1px solid rgba(48, 57, 49, 0.9);
    }
}

@media (max-width: 760px) {
    .vip-container {
        width: min(100% - 1rem, 100%);
    }

    .vip-navbar-inner,
    .vip-section-head,
    .vip-player-head,
    .vip-progress-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .vip-hero-copy,
    .vip-hero-side,
    .vip-auth-copy,
    .vip-auth-card,
    .vip-course-detail-card {
        padding: 1.35rem;
    }

    .vip-stats,
    .vip-detail-grid {
        grid-template-columns: 1fr;
    }

    .vip-player-content {
        width: min(100% - 1rem, 100%);
    }

    .vip-html-content {
        padding: 1.2rem;
    }
}