/* ========================================
   TRADING WISDOM - 全新设计
   现代杂志风格 + 赛博朋克配色
   ======================================== */

:root {
    /* 赛博朋克配色 */
    --bg: #050507;
    --bg-card: #0d0d11;
    --bg-card-hover: #121216;

    --text: #ffffff;
    --text-muted: #888899;

    --accent-green: #00FF88;
    --accent-purple: #B829DD;
    --accent-pink: #FF2E97;

    --border: rgba(255, 255, 255, 0.06);
    --border-strong: rgba(255, 255, 255, 0.12);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'SF Pro Display', 'Helvetica Neue', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    font-size: 15px;
    overflow-x: hidden;
}

/* ========================================
   VIDEO HERO
   ======================================== */

.video-wrapper {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(5, 5, 7, 0.3) 0%,
        rgba(5, 5, 7, 0.7) 70%,
        var(--bg) 100%
    );
}

/* ========================================
   NAVIGATION
   ======================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 40px;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav.scrolled {
    background: rgba(5, 5, 7, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 12px 40px;
}

.nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 4px;
    color: var(--text);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text);
    text-decoration: none;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-green);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.hero-inner {
    max-width: 1000px;
    text-align: center;
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 100px;
    margin-bottom: 32px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent-green);
}

.hero-title {
    margin-bottom: 24px;
}

.title-main {
    display: block;
    font-size: clamp(56px, 12vw, 140px);
    font-weight: 900;
    line-height: 0.9;
    letter-spacing: -0.05em;
    color: var(--text);
}

.title-sub {
    display: block;
    font-size: clamp(18px, 4vw, 32px);
    font-weight: 200;
    letter-spacing: 0.3em;
    background: linear-gradient(90deg, var(--accent-green), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 16px;
}

.hero-text {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.main {
    position: relative;
    z-index: 1;
    background: var(--bg);
}

.section {
    padding: 120px 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 64px;
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.section-header.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-number {
    font-size: 72px;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(180deg, var(--text), rgba(255, 255, 255, 0.1));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.section-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
    letter-spacing: -0.02em;
    flex: 1;
}

.section-line {
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, var(--border-strong), transparent);
}

/* ========================================
   CARDS GRID
   ======================================== */

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.card {
    position: relative;
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    text-decoration: none;
    color: inherit;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(30px);
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-green), var(--accent-purple));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.card.visible {
    opacity: 1;
    transform: translateY(0);
}

.card:hover {
    background: rgba(13, 13, 17, 0.95);
    border-color: rgba(0, 255, 136, 0.3);
    transform: translateY(-8px);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 80px rgba(0, 255, 136, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-index {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 48px;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.08), rgba(184, 41, 221, 0.08));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover .card-index {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.3), rgba(184, 41, 221, 0.3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transform: scale(1.05) translateX(-4px);
}

.card-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
}

.card:hover .card-title {
    color: var(--accent-green);
    transform: translateX(4px);
}

.card-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
}

.card:hover .card-desc {
    color: rgba(255, 255, 255, 0.8);
}

/* 添加光晕背景效果 */
.card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 255, 136, 0.1), transparent 50%);
    opacity: 0;
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.card:hover::after {
    opacity: 1;
}

/* ========================================
   INTERVIEWS
   ======================================== */

.interviews {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.interview-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(30px);
}

.interview-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.interview-card.large {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.05), rgba(184, 41, 221, 0.05));
    border-color: rgba(0, 255, 136, 0.2);
}

.interview-card:hover {
    border-color: rgba(0, 255, 136, 0.4);
    transform: translateY(-4px);
}

.interview-bg {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 80px;
    font-weight: 900;
    line-height: 1;
    color: rgba(255, 255, 255, 0.02);
    letter-spacing: -0.02em;
}

.interview-content {
    position: relative;
    padding: 48px 40px;
    z-index: 1;
}

.interview-name {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.interview-stats {
    display: flex;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat strong {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
}

.stat small {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
}

.stat.highlight strong {
    color: var(--accent-green);
}

.interview-growth {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-green);
}

/* ========================================
   QUOTE SECTION
   ======================================== */

.quote-section {
    padding: 160px 40px;
    text-align: center;
}

.quote-box {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    padding: 60px;
}

.quote-mark {
    position: absolute;
    top: 0;
    left: 0;
    font-size: 120px;
    font-weight: 900;
    line-height: 1;
    color: var(--accent-purple);
    opacity: 0.2;
    font-family: Georgia, serif;
}

.quote-box blockquote {
    font-size: clamp(24px, 4vw, 40px);
    font-weight: 600;
    line-height: 1.5;
    letter-spacing: -0.01em;
    color: var(--text);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: #0d0d11;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 100px 60px 40px;
    margin-top: 120px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-col h4 {
    font-size: 12px;
    font-weight: 700;
    color: #888899;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.footer-col p {
    font-size: 14px;
    color: #888899;
    line-height: 1.7;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-link:hover {
    background: rgba(0, 255, 136, 0.15);
    color: #00FF88;
    transform: translateY(-2px);
}

.footer-link svg {
    transition: transform 0.3s ease;
}

.footer-link:hover svg {
    transform: scale(1.1);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
    .interviews {
        grid-template-columns: repeat(2, 1fr);
    }

    .interview-card.large {
        grid-column: span 1;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .interviews {
        grid-template-columns: 1fr;
    }

    .nav {
        padding: 20px 24px;
    }

    .nav-links {
        gap: 24px;
    }

    .section {
        padding: 80px 24px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        margin-bottom: 48px;
    }

    .section-number {
        font-size: 48px;
    }

    .section-line {
        width: 100%;
    }

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

    .quote-section {
        padding: 100px 24px;
    }

    .quote-box {
        padding: 40px 24px;
    }

    .quote-mark {
        font-size: 80px;
    }

    .footer {
        padding: 60px 24px 32px;
    }
}

/* ========================================
   SELECTION & SCROLLBAR
   ======================================== */

::selection {
    background: var(--accent-green);
    color: var(--bg);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-green);
}