@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root {
  --bg: #0b1218;
  --surface: #121c26;
  --ink: #e7eef5;
  --muted: #8fa3b5;
  --line: #243444;
  --brand: #1ec8c1;
  --brand-soft: #0ea5a0;
  --accent: #39d6cf;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "IBM Plex Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(30,200,193,.18), transparent 55%),
    radial-gradient(700px 380px at 0% 20%, rgba(20,120,140,.16), transparent 50%),
    linear-gradient(180deg, #0a1016 0%, var(--bg) 45%, #0d1620 100%);
  line-height: 1.65;
}
a { color: var(--accent); text-decoration: none; }
.container { width: min(1100px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(11, 18, 24, .82);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 16px; }
.logo {
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  font-size: 1.3rem; font-weight: 700; color: #fff;
  letter-spacing: .04em;
}
.nav { display: flex; flex-wrap: wrap; gap: 14px; }
.nav a { color: var(--muted); font-weight: 500; }
.nav a:hover { color: var(--accent); }

.hero {
  position: relative;
  min-height: 82vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
}
.hero-media {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(115deg, rgba(8,14,20,.88), rgba(14,40,48,.45) 55%, rgba(8,14,20,.7)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120' viewBox='0 0 120 120'%3E%3Cpath fill='none' stroke='%231ec8c133' stroke-width='1' d='M0 60h120M60 0v120'/%3E%3C/svg%3E"),
    linear-gradient(150deg, #0b1c24, #12363c 45%, #0a1218);
  background-size: cover, 60px 60px, cover;
  animation: gridPulse 14s ease-in-out infinite alternate;
}
.hero-copy { padding: 12vh 0 9vh; max-width: 760px; }
.brand-mark {
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  font-weight: 700;
  margin: 0 0 14px;
  line-height: 1.05;
  background: linear-gradient(90deg, #ffffff, #9af0eb);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero h1 { font-size: clamp(1.35rem, 3vw, 1.9rem); font-weight: 600; margin: 0 0 12px; color: #d7ecea; }
.lead { color: var(--muted); max-width: 40rem; }
.btn {
  display: inline-block; margin-top: 18px; padding: 12px 20px;
  background: var(--brand); color: #041216; border-radius: 2px; font-weight: 700;
  transition: transform .25s ease, box-shadow .25s ease, background .2s ease;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(57,214,207,.35), 0 10px 30px rgba(30,200,193,.25);
  background: #35ddd5;
  color: #041216;
}

.banner-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; padding: 28px 0; }
.banner-item {
  display: block; padding: 18px; background: rgba(18,28,38,.9); border: 1px solid var(--line);
  transition: border-color .2s ease, transform .25s ease;
}
.banner-item:hover { border-color: rgba(30,200,193,.55); transform: translateY(-3px); }
.banner-item strong { display: block; color: #fff; }
.banner-item span { color: var(--muted); font-size: .95rem; }

.section { padding: 56px 0; }
.section h2 {
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  font-size: 1.7rem; margin: 0 0 24px; color: #fff;
}
.feature-grid, .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.feature, .item-card {
  background: rgba(18,28,38,.88); border: 1px solid var(--line); padding: 20px;
  transition: transform .25s ease, border-color .25s ease;
}
.feature:hover, .item-card:hover { transform: translateY(-4px); border-color: rgba(30,200,193,.5); }
.feature h3, .item-card h3 { margin: 0 0 8px; color: #fff; }
.feature p, .item-card p { margin: 0; color: var(--muted); }

.about-band {
  background: linear-gradient(90deg, rgba(14,40,48,.75), rgba(18,28,38,.9));
  border-block: 1px solid var(--line);
}
.text-link { font-weight: 600; border-bottom: 1px solid currentColor; color: var(--accent); }

.list { display: grid; gap: 10px; }
.list-row {
  display: flex; justify-content: space-between; gap: 16px; padding: 14px 0;
  border-bottom: 1px solid var(--line); color: #e7eef5;
}
.list-row time { color: var(--muted); white-space: nowrap; }

.cta {
  margin: 24px 0 0; padding: 64px 0;
  background: linear-gradient(135deg, #0e2a30, #12363c 50%, #0b1c24);
  color: #e7eef5; text-align: center;
  border-block: 1px solid rgba(30,200,193,.25);
}

.page-head { padding-top: 40px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chips a { padding: 6px 12px; border: 1px solid var(--line); color: var(--muted); background: var(--surface); }
.chips a.active, .chips a:hover { border-color: var(--brand); color: var(--accent); }
.meta, .price { color: var(--muted); }
.rich { margin: 20px 0; color: #d5e0ea; }
.contact-form { display: grid; gap: 12px; max-width: 520px; margin-top: 20px; }
.contact-form label { display: grid; gap: 6px; color: var(--muted); }
.contact-form input, .contact-form textarea {
  padding: 10px 12px; border: 1px solid var(--line); border-radius: 2px; font: inherit;
  background: #0f1821; color: var(--ink);
}
.contact-form textarea { min-height: 140px; }
.notice { padding: 10px 12px; margin: 12px 0; }
.notice.ok { background: rgba(30,200,193,.12); color: #7bf0e8; }
.notice.err { background: rgba(200,60,60,.15); color: #ff9b94; }

.site-footer { margin-top: 40px; padding: 36px 0 24px; background: #070c11; color: var(--muted); border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
.site-footer a { color: #c9d8e4; margin-right: 10px; }
.copy { margin-top: 24px; font-size: .9rem; opacity: .8; }

.reveal {
  opacity: 0; transform: translateY(18px);
  transition: opacity .75s ease, transform .75s ease;
}
.reveal.in { opacity: 1; transform: none; }

@keyframes gridPulse {
  from { transform: scale(1.02) translate3d(0, 0, 0); filter: saturate(1); }
  to { transform: scale(1.07) translate3d(-1%, 1.2%, 0); filter: saturate(1.15); }
}

@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero { min-height: 72vh; }
  .list-row { flex-direction: column; }
}