:root {
    --ink: #f6f7fb;
    --muted: #aeb4c4;
    --line: rgba(255, 255, 255, 0.12);
    --panel: rgba(255, 255, 255, 0.06);
    --panel-strong: rgba(255, 255, 255, 0.11);
    --blue: #002fa7;
    --blue-soft: #1f61ff;
    --green: #b7ff2a;
    --dark: #07080c;
    --dark-2: #10131d;
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.38);
    --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 15% 10%, rgba(31, 97, 255, 0.22), transparent 32rem),
        radial-gradient(circle at 86% 8%, rgba(183, 255, 42, 0.10), transparent 26rem),
        linear-gradient(135deg, #05060a 0%, #10131d 48%, #06070b 100%);
    line-height: 1.75;
    min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 18px clamp(20px, 4vw, 60px);
    background: rgba(5, 6, 10, 0.78);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: .02em; }
.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--blue), #060a1c);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,.18), 0 12px 28px rgba(0,47,167,.34);
}
.brand-copy { color: var(--muted); font-size: 14px; font-weight: 600; }
.site-nav { display: flex; align-items: center; gap: 8px; }
.site-nav a {
    padding: 10px 14px;
    border-radius: 999px;
    color: var(--muted);
    transition: .2s ease;
    font-size: 15px;
}
.site-nav a:hover, .site-nav a.active { color: #fff; background: rgba(255,255,255,.10); }
.nav-toggle { display: none; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); color: #fff; font-size: 22px; padding: 8px 12px; }
main { overflow: hidden; }
.hero, .page-hero {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: clamp(60px, 9vw, 120px) 0 48px;
}
.hero-grid, .split-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr); gap: clamp(28px, 5vw, 64px); align-items: center; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    width: fit-content;
    padding: 8px 12px;
    border: 1px solid rgba(183, 255, 42, .28);
    border-radius: 999px;
    color: var(--green);
    background: rgba(183, 255, 42, .07);
    font-size: 14px;
    font-weight: 700;
}
.eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 18px var(--green); }
h1, h2, h3 { line-height: 1.18; letter-spacing: -.03em; }
h1 { font-size: clamp(42px, 7vw, 84px); margin: 24px 0 20px; }
h2 { font-size: clamp(30px, 4vw, 52px); margin: 0 0 18px; }
h3 { font-size: clamp(20px, 2.1vw, 28px); margin: 0 0 12px; }
p { color: var(--muted); margin: 0 0 16px; }
.lead { font-size: clamp(18px, 2vw, 22px); color: #d9deea; }
.hero-actions, .button-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 800;
    border: 1px solid var(--line);
    color: #fff;
    background: rgba(255,255,255,.07);
}
.btn.primary { background: linear-gradient(135deg, var(--blue-soft), var(--blue)); border-color: rgba(255,255,255,.18); box-shadow: 0 16px 36px rgba(0,47,167,.35); }
.btn.ghost:hover, .btn.primary:hover { transform: translateY(-1px); }
.hero-visual, .glass-card, .panel {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.045));
    box-shadow: var(--shadow);
}
.hero-visual { padding: clamp(16px, 3vw, 28px); position: relative; }
.hero-visual::after {
    content: "";
    position: absolute;
    inset: auto 24px -16px 24px;
    height: 34px;
    background: linear-gradient(90deg, transparent, rgba(183,255,42,.25), transparent);
    filter: blur(16px);
}
.section {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: clamp(46px, 7vw, 86px) 0;
}
.section-heading { display: grid; grid-template-columns: minmax(0, .9fr) minmax(280px, .7fr); gap: 24px; align-items: end; margin-bottom: 28px; }
.section-heading p { font-size: 17px; }
.card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card, .metric-card, .faq-item, .timeline-item, .work-card, .video-card, .contact-card {
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--panel);
    padding: 22px;
}
.card:hover, .work-card:hover, .video-card:hover { background: var(--panel-strong); transform: translateY(-2px); transition: .2s ease; }
.card img, .work-card img, .video-card img, .contact-card img { border-radius: 18px; margin-bottom: 18px; border: 1px solid rgba(255,255,255,.08); }
.card small, .tag { color: var(--green); font-weight: 800; letter-spacing: .03em; }
.masonry { columns: 3 280px; column-gap: 18px; }
.work-card { break-inside: avoid; margin-bottom: 18px; padding: 16px; }
.work-card .content { padding: 4px 4px 2px; }
.timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; position: relative; }
.timeline-item { position: relative; overflow: hidden; }
.timeline-item::before {
    content: attr(data-step);
    position: absolute;
    right: 18px;
    top: 12px;
    color: rgba(255,255,255,.07);
    font-size: 54px;
    font-weight: 900;
    line-height: 1;
}
.kit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.kit-list { display: grid; gap: 12px; }
.kit-list li, .clean-list li {
    list-style: none;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(255,255,255,.045);
    color: #dce2ef;
}
ul.clean-list, .kit-list { padding: 0; margin: 0; }
.stat-strip { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 30px; }
.metric-card strong { font-size: 30px; display: block; color: #fff; }
.callout {
    padding: clamp(26px, 4vw, 42px);
    border: 1px solid rgba(183,255,42,.24);
    border-radius: 28px;
    background:
        linear-gradient(135deg, rgba(0,47,167,.55), rgba(255,255,255,.05)),
        radial-gradient(circle at 92% 18%, rgba(183,255,42,.22), transparent 14rem);
    box-shadow: var(--shadow);
}
.faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.faq-item button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 0;
    border: 0;
    background: transparent;
    color: #fff;
    font: inherit;
    font-weight: 800;
    text-align: left;
    cursor: pointer;
}
.faq-item .answer { display: none; padding-top: 12px; }
.faq-item.open .answer { display: block; }
.faq-icon { color: var(--green); }
.team-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.profile { text-align: center; }
.profile img { width: 100%; max-height: 250px; object-fit: cover; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid label { display: grid; gap: 8px; color: #dfe5f4; font-weight: 700; }
.form-grid .full { grid-column: 1 / -1; }
input, textarea, select {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 14px 15px;
    background: rgba(255,255,255,.07);
    color: #fff;
    outline: none;
    font: inherit;
}
textarea { min-height: 130px; resize: vertical; }
select option { color: #111; }
.form-note { color: var(--muted); font-size: 14px; margin-top: 12px; }
.site-footer {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto 28px;
    border: 1px solid var(--line);
    border-radius: 28px;
    background: rgba(255,255,255,.06);
    padding: 26px;
}
.footer-grid { display: grid; grid-template-columns: 1.1fr .9fr .9fr; gap: 22px; }
.footer-grid strong { display: block; margin-bottom: 10px; }
.domain-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(183,255,42,.10);
    border: 1px solid rgba(183,255,42,.25);
    color: var(--green);
    font-weight: 800;
}
.notice { border-left: 4px solid var(--green); padding-left: 16px; }
.video-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.video-meta span { border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; color: var(--muted); font-size: 13px; }
@media (max-width: 920px) {
    .hero-grid, .split-grid, .section-heading, .kit-grid { grid-template-columns: 1fr; }
    .card-grid, .card-grid.two, .timeline, .team-row, .stat-strip, .faq-list, .footer-grid { grid-template-columns: 1fr 1fr; }
    .site-nav { position: fixed; inset: 84px 20px auto 20px; display: none; flex-direction: column; align-items: stretch; padding: 14px; border: 1px solid var(--line); border-radius: 20px; background: rgba(5,6,10,.96); }
    .site-nav.open { display: flex; }
    .nav-toggle { display: inline-flex; }
}
@media (max-width: 640px) {
    .site-header { padding: 14px 18px; }
    .brand-copy { display: none; }
    .hero, .page-hero, .section, .site-footer { width: min(100% - 28px, 1180px); }
    .card-grid, .card-grid.two, .timeline, .team-row, .stat-strip, .faq-list, .footer-grid, .form-grid { grid-template-columns: 1fr; }
    .form-grid .full { grid-column: auto; }
    h1 { font-size: clamp(36px, 14vw, 58px); }
    .masonry { columns: 1; }
}