:root {
    --bg: #050506;
    --panel: #0f1012;
    --panel-2: #16181b;
    --ink: #ffffff;
    --muted: #a6adb8;
    --line: rgba(255,255,255,.12);
    --accent: #f6c95c;
    --green: #14c784;
    --red: #ff5f73;
    --shadow: 0 28px 80px rgba(0,0,0,.45);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    padding-bottom: 78px;
    background: var(--bg);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
.site-head {
    position: sticky;
    top: 0;
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 68px;
    padding: 0 clamp(16px, 4vw, 56px);
    background: rgba(5,5,6,.86);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 950; }
.brand span {
    width: 22px;
    height: 22px;
    display: inline-grid;
    background:
        linear-gradient(#fff 0 0) 0 0 / 8px 8px no-repeat,
        linear-gradient(#fff 0 0) 14px 0 / 8px 8px no-repeat,
        linear-gradient(#fff 0 0) 7px 7px / 8px 8px no-repeat,
        linear-gradient(#fff 0 0) 0 14px / 8px 8px no-repeat,
        linear-gradient(#fff 0 0) 14px 14px / 8px 8px no-repeat;
}
nav { display: flex; gap: 24px; color: var(--muted); font-size: 14px; font-weight: 800; }
.head-cta {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    padding: 0 20px;
    border-radius: 4px;
    background: #fff;
    color: #000;
    font-weight: 900;
}
.hero {
    display: grid;
    grid-template-columns: minmax(0, .92fr) minmax(420px, 1.08fr);
    gap: clamp(28px, 5vw, 72px);
    align-items: center;
    min-height: calc(100svh - 68px);
    padding: clamp(38px, 7vw, 96px) clamp(16px, 4vw, 56px);
}
.big-mark {
    font-size: clamp(72px, 14vw, 150px);
    font-weight: 950;
    line-height: .82;
    letter-spacing: 0;
}
.eyebrow {
    margin: 0 0 12px;
    color: var(--accent);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 780px; font-size: clamp(34px, 5.4vw, 64px); line-height: 1.08; margin-bottom: 18px; }
h2 { font-size: clamp(28px, 4vw, 48px); line-height: 1.12; margin-bottom: 14px; }
h3 { line-height: 1.24; }
p { color: var(--muted); }
.lead { max-width: 620px; font-size: 18px; }
.hero-art img, .split-panel img, .bottom-convert img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
}
.actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.btn {
    min-width: 156px;
    min-height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 24px;
    border-radius: 4px;
    font-size: 17px;
    font-weight: 950;
    border: 1px solid var(--line);
}
.btn.primary { background: #fff; color: #000; border-color: #fff; }
.btn.secondary { background: transparent; color: #fff; }
.ticker-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.ticker-strip article { padding: 22px clamp(16px, 3vw, 34px); border-right: 1px solid var(--line); }
.ticker-strip strong, .ticker-strip span { display: block; color: var(--muted); font-size: 13px; }
.ticker-strip b { display: block; margin: 6px 0; font-size: 25px; }
.ticker-strip .up { color: var(--green); }
.ticker-strip .down { color: var(--red); }
.feature-band, .guide-grid, .split-panel, .bottom-convert, .knowledge-panel {
    padding: clamp(48px, 8vw, 108px) clamp(16px, 4vw, 56px);
}
.section-title { max-width: 860px; margin-bottom: 30px; }
.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
.cards article, .guide-grid article {
    min-height: 230px;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
}
.cards b, .guide-grid span { color: var(--accent); font-weight: 950; }
.split-panel, .bottom-convert {
    display: grid;
    grid-template-columns: minmax(400px, 1fr) minmax(0, .92fr);
    gap: clamp(24px, 5vw, 64px);
    align-items: center;
    background: var(--panel-2);
    border-top: 1px solid var(--line);
}
.split-panel ul { margin: 18px 0 0; padding-left: 20px; color: var(--muted); }
.guide-grid {
    display: grid;
    grid-template-columns: 1fr repeat(3, minmax(0, .75fr));
    gap: 14px;
}
.guide-grid .section-title { margin: 0; align-self: center; }
.knowledge-panel {
    background: #050506;
    border-top: 1px solid var(--line);
}
.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
.knowledge-grid article {
    padding: 24px;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: var(--panel);
}
.knowledge-grid p { margin-bottom: 0; }
.bottom-convert { background: #090a0c; }
.float-bar {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: 12px;
    z-index: 60;
    min-height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 8px;
    border-radius: 8px;
    background: rgba(255,255,255,.96);
    color: #050506;
    box-shadow: 0 16px 48px rgba(0,0,0,.42);
}
.float-bar strong { margin-right: auto; padding-left: 8px; font-weight: 950; }
.float-bar a {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    padding: 0 18px;
    border-radius: 4px;
    background: #050506;
    color: #fff;
    font-weight: 900;
}
.float-bar a + a { background: #fff; color: #050506; border: 1px solid rgba(0,0,0,.18); }
@media (max-width: 980px) {
    nav { display: none; }
    .hero, .split-panel, .bottom-convert, .guide-grid { grid-template-columns: 1fr; }
    .ticker-strip, .cards, .knowledge-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 580px) {
    .head-cta { display: none; }
    .site-head { min-height: 58px; }
    .hero { min-height: auto; }
    .ticker-strip, .cards, .knowledge-grid { grid-template-columns: 1fr; }
    .actions .btn { width: 100%; }
    .float-bar strong { display: none; }
    .float-bar a { flex: 1; justify-content: center; padding: 0 8px; }
}