:root {
    --bg: #070a12;
    --bg-alt: #0a0f1a;
    --card: #10182c;
    --card-alt: #15203a;
    --text: #f7f9ff;
    --muted: #b8c2dd;
    --muted-2: #7d87a6;
    --accent: #9b7fff;
    --accent-2: #43e2d1;
    --accent-3: #ff7eb3;
    --accent-soft: rgba(155, 127, 255, 0.14);
    --accent-soft-2: rgba(67, 226, 209, 0.12);
    --border: rgba(255, 255, 255, 0.08);
    --border-soft: rgba(255, 255, 255, 0.04);
    --glow: 0 0 40px rgba(155, 127, 255, 0.18);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Nav */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(24px) saturate(140%);
    background: rgba(7, 10, 18, 0.82);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.nav-brand {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2), var(--accent-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    position: relative;
}

.nav-brand::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    border-radius: 2px;
    opacity: 0;
    transform: scaleX(0.6);
    transition: all 0.3s ease;
}

.nav-brand:hover::after {
    opacity: 1;
    transform: scaleX(1);
}

.nav-links {
    display: flex;
    gap: 6px;
    flex: 1;
    justify-content: center;
}

.nav-link {
    color: var(--muted);
    font-size: 13px;
    font-weight: 600;
    padding: 9px 14px;
    border-radius: 10px;
    transition: all 0.25s ease;
    cursor: pointer;
    letter-spacing: 0.2px;
}

.nav-link:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.nav-search {
    flex-shrink: 0;
}

.nav-search input {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text);
    padding: 9px 16px;
    border-radius: 999px;
    font-size: 13px;
    width: 220px;
    outline: none;
    transition: all 0.25s ease;
    font-weight: 500;
}

.nav-search input:focus {
    border-color: rgba(155, 127, 255, 0.55);
    box-shadow: var(--glow);
    width: 260px;
}

/* Drawer */
.drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 460px;
    max-width: 100%;
    background: linear-gradient(180deg, #0a0f1a, #070a12);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    z-index: 2000;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.32, 0.72, 0, 1);
    display: flex;
    flex-direction: column;
    box-shadow: -20px 0 60px rgba(0, 0, 0, 0.55);
}

.drawer.open {
    transform: translateX(0);
}

.drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    z-index: 1999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.drawer-backdrop.open {
    opacity: 1;
    pointer-events: auto;
}

.drawer-header {
    padding: 18px 22px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.drawer-title {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.drawer-close {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.drawer-close:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: scale(1.05);
}

.drawer-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.drawer-article {
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 16px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: all 0.25s ease;
    display: block;
    text-decoration: none;
    color: inherit;
}

.drawer-article:hover {
    border-color: rgba(155, 127, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.drawer-article-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.45;
}

.drawer-article-meta {
    display: flex;
    gap: 10px;
    font-size: 12px;
    color: var(--muted-2);
    flex-wrap: wrap;
}

.drawer-article-score {
    color: var(--accent-2);
    font-weight: 700;
}

/* Section */
.section {
    padding: 130px 0;
    position: relative;
}

.section.dark {
    background: var(--bg-alt);
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.06), transparent);
}

.section-header {
    text-align: center;
    margin-bottom: 68px;
}

.section-title {
    font-size: 44px;
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: -0.6px;
    background: linear-gradient(135deg, var(--text) 0%, var(--muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 16px;
    color: var(--muted);
    max-width: 620px;
    margin: 0 auto;
    font-weight: 500;
}

/* Link tags */
.link, .tag, .project-chip, .filter-chip {
    cursor: pointer;
    transition: all 0.2s ease;
}

.link {
    color: var(--accent-2);
    text-decoration: none;
    font-weight: 600;
    position: relative;
}

.link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-2);
    border-radius: 2px;
    opacity: 0;
    transform: scaleX(0.5);
    transition: all 0.25s ease;
}

.link:hover::after, .tag:hover, .project-chip:hover, .filter-chip:hover {
    opacity: 1;
    transform: scaleX(1);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-image-grid {
    position: absolute;
    inset: -15%;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
    transform: rotate(-10deg) scale(1.18);
    opacity: 0.35;
}

.hero-img {
    background-size: cover;
    background-position: center;
    border-radius: 16px;
    filter: grayscale(0.4);
    transition: filter 0.5s ease;
}

.hero:hover .hero-img {
    filter: grayscale(0.15);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 35% 25%, rgba(7, 10, 18, 0.55) 0%, transparent 60%),
                radial-gradient(ellipse at 65% 75%, rgba(7, 10, 18, 0.65) 0%, transparent 55%),
                radial-gradient(circle at 50% 50%, rgba(155, 127, 255, 0.08) 0%, transparent 55%),
                linear-gradient(180deg, rgba(7, 10, 18, 0.18), var(--bg));
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding-top: 60px;
}

.hero-title {
    font-size: 88px;
    font-weight: 900;
    letter-spacing: -2.5px;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--text) 0%, var(--muted) 60%, var(--accent-2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 60px rgba(155, 127, 255, 0.22);
}

.hero-subtitle {
    font-size: 24px;
    color: var(--muted);
    margin-bottom: 18px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.hero-description {
    font-size: 18px;
    color: var(--muted);
    margin-bottom: 36px;
    line-height: 1.85;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: inline-flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 32px;
    background: rgba(16, 24, 44, 0.7);
    padding: 16px 26px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
}

.hero-stat {
    text-align: center;
}

.hero-stat-num {
    display: block;
    font-size: 32px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat-label {
    font-size: 12px;
    color: var(--muted-2);
    letter-spacing: 0.4px;
    font-weight: 600;
    text-transform: uppercase;
}

.hero-stat-divider {
    color: rgba(125, 135, 166, 0.5);
    font-size: 16px;
    font-weight: 300;
}

.hero-tagline {
    display: inline-flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 20px;
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.9), rgba(10, 15, 26, 0.9));
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.4px;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.tag::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(155, 127, 255, 0.14), rgba(67, 226, 209, 0.1));
    opacity: 0;
    transition: opacity 0.25s ease;
}

.tag:hover {
    border-color: rgba(155, 127, 255, 0.55);
    transform: translateY(-2px);
    box-shadow: var(--glow);
}

.tag:hover::before {
    opacity: 1;
}

.tag.small {
    padding: 7px 13px;
    font-size: 12px;
    font-weight: 600;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.scroll-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    animation: bounce 2s infinite;
    box-shadow: 0 0 20px rgba(155, 127, 255, 0.5);
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(10px); opacity: 0.45; }
}

.scroll-text {
    font-size: 12px;
    color: var(--muted-2);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-weight: 600;
}

/* Definition Grid */
.definition-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.definition-card {
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.95), rgba(10, 15, 26, 0.95));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 34px;
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
}

.definition-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 0%, rgba(155, 127, 255, 0.12), transparent 55%);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.definition-card:hover {
    border-color: rgba(155, 127, 255, 0.45);
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

.definition-card:hover::before {
    opacity: 1;
}

.card-number {
    font-size: 13px;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 16px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.card-title {
    font-size: 21px;
    font-weight: 700;
    margin-bottom: 14px;
    position: relative;
}

.card-text {
    font-size: 15px;
    color: var(--muted);
    line-height: 1.8;
    position: relative;
}

/* Quote */
.quote-block {
    text-align: center;
    padding-top: 24px;
}

.quote-text {
    font-size: 21px;
    font-weight: 600;
    font-style: italic;
    color: var(--text);
    max-width: 720px;
    margin: 0 auto;
    margin-bottom: 22px;
    line-height: 1.7;
}

.quote-line {
    width: 70px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    margin: 0 auto;
    border-radius: 3px;
}

.quote-line.accent {
    background: linear-gradient(90deg, var(--accent), var(--accent-3));
}

/* Questions */
.questions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.question-card {
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.95), rgba(10, 15, 26, 0.95));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 30px 34px;
    display: flex;
    gap: 22px;
    align-items: flex-start;
    transition: all 0.35s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.question-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 10% 0%, rgba(67, 226, 209, 0.12), transparent 55%);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.question-card:hover {
    border-color: rgba(67, 226, 209, 0.5);
    transform: translateY(-4px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.4);
}

.question-card:hover::before {
    opacity: 1;
}

.question-icon {
    font-size: 26px;
    color: var(--accent-2);
    font-weight: 800;
    line-height: 1;
    position: relative;
}

.question-text {
    font-size: 19px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.65;
    position: relative;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 46px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 8px;
    bottom: 8px;
    width: 3px;
    background: linear-gradient(180deg, var(--accent), var(--accent-2), var(--accent-3));
    border-radius: 3px;
    opacity: 0.7;
}

.timeline-item {
    position: relative;
    padding-bottom: 56px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-year {
    position: absolute;
    left: -46px;
    top: 0;
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: linear-gradient(180deg, var(--card), var(--bg-alt));
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 800;
    color: var(--accent);
    box-shadow: 0 0 30px rgba(155, 127, 255, 0.2);
}

.timeline-content {
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.95), rgba(10, 15, 26, 0.95));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 30px 34px;
    position: relative;
    overflow: hidden;
}

.timeline-content::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 0%, rgba(155, 127, 255, 0.1), transparent 60%);
    opacity: 0.5;
}

.timeline-title {
    font-size: 21px;
    font-weight: 700;
    margin-bottom: 12px;
    position: relative;
}

.timeline-text {
    font-size: 15px;
    color: var(--muted);
    line-height: 1.8;
    margin-bottom: 18px;
    position: relative;
}

.timeline-projects {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    position: relative;
}

.project-chip {
    padding: 9px 15px;
    background: rgba(10, 15, 26, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    transition: all 0.25s ease;
}

.project-chip:hover {
    border-color: rgba(155, 127, 255, 0.55);
    background: rgba(155, 127, 255, 0.1);
    transform: translateY(-2px);
}

/* Structure Grid */
.structure-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.structure-card {
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.95), rgba(10, 15, 26, 0.95));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 30px 24px;
    text-align: center;
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
}

.structure-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(155, 127, 255, 0.12), transparent 60%);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.structure-card:hover {
    transform: translateY(-6px);
    border-color: rgba(155, 127, 255, 0.45);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

.structure-card:hover::before {
    opacity: 1;
}

.structure-icon {
    font-size: 42px;
    margin-bottom: 18px;
    position: relative;
}

.structure-title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 12px;
    position: relative;
}

.structure-text {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.75;
    margin-bottom: 16px;
    position: relative;
}

.structure-tags {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

/* Content Stats */
.content-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 64px;
}

.stat-card {
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.95), rgba(10, 15, 26, 0.95));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 30px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(155, 127, 255, 0.12), transparent 60%);
    opacity: 0.5;
}

.stat-card.clickable {
    cursor: pointer;
    transition: all 0.3s ease;
}

.stat-card.clickable:hover {
    border-color: rgba(155, 127, 255, 0.55);
    transform: translateY(-4px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.45);
}

.stat-number {
    font-size: 46px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 6px;
    position: relative;
}

.stat-label {
    font-size: 14px;
    color: var(--muted);
    font-weight: 600;
    position: relative;
}

.stat-sub {
    font-size: 12px;
    color: var(--muted-2);
    position: relative;
}

.stat-action {
    position: absolute;
    bottom: 12px;
    left: 0;
    right: 0;
    font-size: 11px;
    color: var(--accent-2);
    font-weight: 700;
    opacity: 0;
    transition: opacity 0.25s ease;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.stat-card.clickable:hover .stat-action {
    opacity: 1;
}

/* Dual Accounts */
.dual-accounts {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 26px;
    align-items: stretch;
    margin-bottom: 64px;
}

.account-card {
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.95), rgba(10, 15, 26, 0.95));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 34px;
    position: relative;
    overflow: hidden;
}

.account-card.left {
    border-color: rgba(155, 127, 255, 0.35);
}

.account-card.left::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 0%, rgba(155, 127, 255, 0.14), transparent 60%);
    opacity: 0.6;
}

.account-card.right {
    border-color: rgba(67, 226, 209, 0.35);
}

.account-card.right::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 0%, rgba(67, 226, 209, 0.12), transparent 60%);
    opacity: 0.6;
}

.account-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 1.5px;
    padding: 7px 13px;
    border-radius: 999px;
    background: rgba(155, 127, 255, 0.14);
    color: var(--accent);
    text-transform: uppercase;
}

.account-card.right .account-badge {
    background: rgba(67, 226, 209, 0.14);
    color: var(--accent-2);
}

.account-name {
    font-size: 23px;
    font-weight: 800;
    margin-bottom: 10px;
    position: relative;
}

.account-card.left .account-name {
    color: var(--accent);
}

.account-card.right .account-name {
    color: var(--accent-2);
}

.account-role {
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 26px;
    font-weight: 500;
    position: relative;
}

.account-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 22px;
    position: relative;
}

.account-metric {
    text-align: center;
}

.metric-num {
    display: block;
    font-size: 26px;
    font-weight: 800;
    color: var(--text);
}

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

.account-keywords {
    display: flex;
    gap: 9px;
    flex-wrap: wrap;
    position: relative;
}

.vs {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 800;
    color: var(--muted-2);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.project-card-large {
    grid-column: span 2;
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 16/10;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: all 0.4s cubic-bezier(0.32, 0.72, 0, 1);
}

.project-image {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: grayscale(0.35);
    transition: transform 0.5s cubic-bezier(0.32, 0.72, 0, 1), filter 0.5s ease;
}

.project-card-large:hover .project-image {
    transform: scale(1.07);
    filter: grayscale(0.1);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(7, 10, 18, 0.85) 62%, rgba(7, 10, 18, 0.95) 100%);
}

.project-info {
    position: absolute;
    left: 26px;
    right: 26px;
    bottom: 26px;
}

.project-card {
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.95), rgba(10, 15, 26, 0.95));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 22px;
    cursor: pointer;
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
}

.project-card::before, .project-card-large::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 0%, rgba(155, 127, 255, 0.14), transparent 55%);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.project-card:hover, .project-card-large:hover {
    border-color: rgba(155, 127, 255, 0.55);
    transform: translateY(-5px);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.55);
}

.project-card:hover::before, .project-card-large:hover::before {
    opacity: 1;
}

.project-thumb {
    height: 120px;
    border-radius: 14px;
    background-size: cover;
    background-position: center;
    margin-bottom: 16px;
    filter: grayscale(0.3);
    transition: filter 0.4s ease;
}

.project-card:hover .project-thumb {
    filter: grayscale(0.1);
}

.project-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 1.5px;
    color: var(--accent);
    background: rgba(155, 127, 255, 0.14);
    padding: 7px 13px;
    border-radius: 999px;
    margin-bottom: 14px;
    text-transform: uppercase;
    position: relative;
}

.project-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    position: relative;
}

.project-desc {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.7;
    position: relative;
}

/* Articles */
.articles-toolbar {
    display: flex;
    gap: 28px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-label {
    font-size: 13px;
    color: var(--muted-2);
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.filter-chip {
    font-size: 12px;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--muted);
    font-weight: 600;
    transition: all 0.25s ease;
}

.filter-chip.active {
    background: rgba(155, 127, 255, 0.16);
    border-color: rgba(155, 127, 255, 0.55);
    color: var(--text);
    box-shadow: 0 0 30px rgba(155, 127, 255, 0.15);
}

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

.article-card {
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.95), rgba(10, 15, 26, 0.95));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 18px;
    cursor: pointer;
    transition: all 0.25s ease;
    display: block;
    text-decoration: none;
    color: inherit;
}

.article-card:hover {
    border-color: rgba(155, 127, 255, 0.5);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
}

.article-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.5;
}

.article-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--muted-2);
    flex-wrap: wrap;
}

.article-theme {
    color: var(--accent-2);
    font-weight: 700;
}

/* Method List */
.method-list {
    max-width: 880px;
    margin: 0 auto;
}

.method-item {
    display: flex;
    gap: 26px;
    padding: 36px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.method-item:first-child {
    padding-top: 0;
}

.method-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.method-step {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: linear-gradient(180deg, var(--card), var(--bg-alt));
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    font-weight: 800;
    color: var(--accent);
    box-shadow: 0 0 30px rgba(155, 127, 255, 0.12);
}

.method-content {
    flex: 1;
}

.method-title {
    font-size: 21px;
    font-weight: 700;
    margin-bottom: 12px;
}

.method-text {
    font-size: 15px;
    color: var(--muted);
    line-height: 1.8;
    margin-bottom: 16px;
}

.method-tags, .value-tags {
    display: flex;
    gap: 9px;
    flex-wrap: wrap;
}

/* Value Grid */
.value-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.value-card {
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.95), rgba(10, 15, 26, 0.95));
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    padding: 34px;
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 0%, rgba(155, 127, 255, 0.12), transparent 55%);
    opacity: 0.5;
}

.value-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 14px;
    position: relative;
}

.value-text {
    font-size: 15px;
    color: var(--muted);
    line-height: 1.8;
    margin-bottom: 18px;
    position: relative;
}

/* Closing */
.closing {
    padding: 160px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.closing::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 30%, rgba(155, 127, 255, 0.18), transparent 60%);
    opacity: 0.6;
}

.closing-content {
    max-width: 740px;
    margin: 0 auto;
    position: relative;
}

.closing-title {
    font-size: 54px;
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 28px;
    letter-spacing: -1px;
}

.closing-text {
    font-size: 19px;
    color: var(--muted);
    line-height: 1.95;
    margin-bottom: 44px;
    font-weight: 500;
}

.closing-quote {
    display: inline-block;
    font-size: 21px;
    font-weight: 700;
    font-style: italic;
    color: var(--text);
    padding: 20px 36px;
    background: linear-gradient(180deg, rgba(16, 24, 44, 0.95), rgba(10, 15, 26, 0.95));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    box-shadow: var(--glow);
}

/* Footer */
.footer {
    padding: 44px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-brand {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 6px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    font-size: 13px;
    color: var(--muted-2);
}

.footer-note {
    font-size: 13px;
    color: var(--muted-2);
}

/* Responsive */
@media (max-width: 1024px) {
    .definition-grid {
        grid-template-columns: 1fr;
    }
    .structure-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .project-card-large {
        grid-column: span 2;
    }
    .value-grid {
        grid-template-columns: 1fr;
    }
    .dual-accounts {
        grid-template-columns: 1fr;
    }
    .vs {
        display: none;
    }
    .nav-links {
        display: none;
    }
    .content-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .articles-toolbar {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 720px) {
    .hero-title {
        font-size: 52px;
    }
    .section-title {
        font-size: 34px;
    }
    .content-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .structure-grid {
        grid-template-columns: 1fr;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
    .project-card-large {
        grid-column: span 1;
    }
    .questions-grid {
        grid-template-columns: 1fr;
    }
    .account-metrics {
        grid-template-columns: 1fr;
    }
    .articles-grid {
        grid-template-columns: 1fr;
    }
    .closing-title {
        font-size: 38px;
    }
}