:root {
    --bg: #07111f;
    --panel: rgba(12, 23, 44, 0.78);
    --text: #f3f5fb;
    --muted: #a9b5ca;
    --line: rgba(169, 181, 202, 0.18);
    --gold: #d7b15d;
    --cyan: #73d5ff;
    --ink: #081322;
    --max: 1260px;
    --header-h: 84px;
    --shadow: 0 28px 70px rgba(0, 0, 0, 0.26);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at 14% 16%, rgba(115, 213, 255, 0.12), transparent 26%),
        radial-gradient(circle at 86% 12%, rgba(215, 177, 93, 0.12), transparent 22%),
        linear-gradient(180deg, #08111f 0%, #0a1628 48%, #07111f 100%);
    color: var(--text);
    font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
    overflow-x: hidden;
}

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

.page-noise,
.ambient {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

.page-noise {
    z-index: -3;
    opacity: 0.2;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(to bottom, transparent, black 12%, black 88%, transparent);
}

.ambient {
    z-index: -4;
    filter: blur(56px);
}

.ambient-a {
    background: radial-gradient(circle at 18% 24%, rgba(115, 213, 255, 0.14), transparent 28%);
}

.ambient-b {
    background: radial-gradient(circle at 78% 74%, rgba(215, 177, 93, 0.12), transparent 24%);
}

.site-header,
.section {
    width: min(calc(100% - 32px), var(--max));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 18px;
    min-height: var(--header-h);
    padding: 16px 0 12px;
    backdrop-filter: blur(18px);
}

.brand {
    display: grid;
    gap: 4px;
}

.brand-cn,
.hero-kicker,
.section-kicker,
.tri-label,
.reason-index {
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.brand-cn {
    font-size: 0.76rem;
    color: var(--muted);
}

.brand-en {
    font-family: "Baskerville", "Times New Roman", serif;
    font-size: 1rem;
}

.site-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 34px;
    font-size: 0.92rem;
    color: var(--muted);
}

.site-nav a {
    position: relative;
}

.site-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 1px;
    transform: scaleX(0);
    transform-origin: left;
    background: var(--gold);
    transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
    transform: scaleX(1);
}

.nav-cta,
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 50px;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 200ms ease, border-color 200ms ease, background 200ms ease;
}

.nav-cta {
    border: 1px solid rgba(215, 177, 93, 0.34);
    background: rgba(215, 177, 93, 0.08);
}

.nav-cta:hover,
.button:hover {
    transform: translateY(-2px);
}

.hero {
    width: min(calc(100% - 32px), var(--max));
    min-height: calc(100svh - var(--header-h) - 8px);
    margin: 0 auto;
    padding: 18px 0 30px;
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.92fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: center;
}

.hero-copy {
    max-width: 660px;
    padding-top: 70px;
}

.hero-kicker,
.section-kicker {
    margin: 0 0 16px;
    color: var(--gold);
    font-size: 0.8rem;
}

.hero h1,
.section-head h2,
.tri-card h3,
.reason h3,
.flow-step h3,
.pool-card h3,
.closing-card h2 {
    margin: 0;
    font-family: "Baskerville", "Times New Roman", serif;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5.2rem);
    line-height: 0.95;
}

.hero-lead {
    margin: 28px 0 0;
    max-width: 24rem;
    font-size: clamp(1.12rem, 1.7vw, 1.5rem);
    line-height: 1.42;
}

.hero-strap,
.section-head p,
.tri-card p,
.reason p,
.flow-step p,
.pool-card p,
.closing-card p {
    color: var(--muted);
    line-height: 1.72;
    margin: 0;
}

.hero-strap {
    max-width: 32rem;
    margin-top: 16px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.button-primary {
    color: var(--ink);
    background: linear-gradient(135deg, var(--gold), #f2dcb0);
}

.button-secondary {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.02);
}

.hero-panel {
    display: grid;
    gap: 16px;
    align-content: start;
    padding: 22px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01)),
        linear-gradient(180deg, rgba(10, 22, 40, 0.94), rgba(12, 24, 43, 0.9));
    box-shadow: var(--shadow);
}

.hero-badge {
    display: inline-flex;
    min-height: 30px;
    align-items: center;
    justify-self: start;
    padding: 0 12px;
    border: 1px solid rgba(115, 213, 255, 0.22);
    border-radius: 999px;
    color: var(--cyan);
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.hero-logo {
    display: block;
    width: min(420px, 100%);
    height: auto;
    justify-self: center;
}

.hero-summary {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-summary span {
    display: inline-flex;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    padding: 0 10px;
    color: var(--muted);
    font-size: 0.84rem;
    letter-spacing: 0.06em;
}

.hero-summary span + span {
    border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.section {
    padding: 92px 0;
}

.section-head {
    max-width: 780px;
}

.section-head h2 {
    font-size: clamp(2.2rem, 4vw, 4rem);
    line-height: 1.04;
    margin-bottom: 18px;
}

.tri-grid,
.reason-list,
.pool-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    margin-top: 38px;
}

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

.tri-card,
.reason,
.flow-step,
.pool-card {
    padding: 28px 0 0;
    border-top: 1px solid var(--line);
}

.tri-label,
.reason-index {
    display: inline-block;
    margin-bottom: 12px;
    color: var(--gold);
    font-size: 0.8rem;
}

.flow-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
    margin-top: 42px;
}

.flow-step .step-no {
    display: inline-flex;
    width: 54px;
    height: 54px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid rgba(115, 213, 255, 0.24);
    color: var(--cyan);
    margin-bottom: 18px;
}

.closing-section {
    padding-bottom: 120px;
}

.closing-card {
    padding-top: 30px;
    border-top: 1px solid rgba(215, 177, 93, 0.28);
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1120px) {
    .hero {
        grid-template-columns: 1fr;
        min-height: auto;
        padding-top: 10px;
    }

    .hero-copy {
        max-width: 680px;
        padding-top: 38px;
    }

    .tri-grid,
    .flow-grid,
    .pool-grid,
    .tri-grid-wide,
    .join-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 860px) {
    .site-header {
        grid-template-columns: 1fr auto;
        align-items: flex-start;
        gap: 14px 20px;
        min-height: auto;
    }

    .site-nav {
        grid-column: 1 / -1;
        width: 100%;
        justify-content: space-between;
        gap: 14px;
        overflow-x: auto;
        padding-bottom: 2px;
    }

    .hero-panel {
        padding: 18px;
    }

    .hero-logo {
        width: min(340px, 100%);
    }
}

@media (max-width: 640px) {
    .site-header,
    .section,
    .hero {
        width: min(calc(100% - 24px), var(--max));
    }

    .nav-cta {
        display: none;
    }

    .hero {
        gap: 22px;
        padding-bottom: 26px;
    }

    .hero-copy {
        padding-top: 18px;
    }

    .hero-panel {
        padding: 14px;
        border-radius: 14px;
    }

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

    .hero-summary span + span {
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .section {
        padding: 72px 0;
    }

    .section-head h2 {
        font-size: clamp(1.9rem, 9vw, 2.8rem);
    }
}