/* SparklingPlay — 对外合作官网
   品牌色取自 App logo 渐变：#AD46FF → #FF005C */

:root {
  --bg: #07070c;
  --bg-alt: #0c0c14;
  --surface: #12121d;
  --surface-2: #171725;
  --line: #24243a;
  --line-soft: #1c1c2c;
  --fg: #f2f2f7;
  --fg-muted: #a9a9bd;
  --fg-dim: #7a7a92;
  --brand-a: #ad46ff;
  --brand-b: #ff005c;
  --grad: linear-gradient(135deg, var(--brand-a), var(--brand-b));
  --radius: 14px;
  --wrap: 1120px;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

a { color: inherit; }
img { max-width: 100%; display: block; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--fg); color: var(--bg); padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

:focus-visible { outline: 2px solid var(--brand-a); outline-offset: 3px; border-radius: 4px; }

/* ---------- header ---------- */
.site {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  padding: 14px 24px;
  background: rgba(7, 7, 12, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 650; letter-spacing: -0.01em; text-decoration: none; font-size: 17px;
}
.brand img { border-radius: 8px; }
.site-nav { display: flex; gap: 22px; margin-inline-start: auto; flex-wrap: wrap; }
.site-nav a { color: var(--fg-muted); text-decoration: none; font-size: 14.5px; }
.site-nav a:hover { color: var(--fg); }

.langs { display: flex; gap: 4px; }
.langs a {
  font-size: 13px; color: var(--fg-dim); text-decoration: none;
  padding: 5px 10px; border-radius: 999px; border: 1px solid transparent; white-space: nowrap;
}
.langs a:hover { color: var(--fg); border-color: var(--line); }
.langs a[aria-current="true"] { color: var(--fg); border-color: var(--line); background: var(--surface); }

/* ---------- hero ---------- */
.hero { position: relative; padding: 108px 0 84px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% 20% auto -10%; height: 620px;
  background: radial-gradient(closest-side, rgba(173, 70, 255, 0.22), transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; inset: -20% -10% auto auto; width: 620px; height: 620px;
  background: radial-gradient(closest-side, rgba(255, 0, 92, 0.18), transparent 70%);
  pointer-events: none;
}
.hero .wrap { position: relative; }

.eyebrow {
  display: inline-block; margin: 0 0 20px;
  font-size: 12.5px; letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--fg-muted);
  border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px;
}
.hero h1 {
  margin: 0 0 22px; max-width: 20ch;
  font-size: clamp(34px, 5.4vw, 60px); line-height: 1.1;
  letter-spacing: -0.025em; font-weight: 680;
}
.lead { margin: 0; max-width: 62ch; font-size: clamp(16.5px, 1.6vw, 19px); color: var(--fg-muted); }
.lead.center { margin: 0 auto 40px; text-align: center; }

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 36px 0 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 24px; border-radius: 999px; text-decoration: none;
  font-size: 15px; font-weight: 560; border: 1px solid transparent; transition: opacity .15s, border-color .15s;
}
.btn.primary { background: var(--grad); color: #fff; }
.btn.primary:hover { opacity: .9; }
.btn.ghost { border-color: var(--line); color: var(--fg); }
.btn.ghost:hover { border-color: var(--fg-dim); }

/* ---------- bands ---------- */
.band { padding: 84px 0; border-top: 1px solid var(--line-soft); }
.band.alt { background: var(--bg-alt); }
.band h2 {
  margin: 0 0 44px; font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -0.02em; font-weight: 650;
}
#partner h2, #partner .lead { text-align: center; }
#partner h2 { margin-bottom: 16px; }

.grid { display: grid; gap: 18px; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(440px, 1fr)); }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(272px, 1fr)); }

.card {
  background: var(--surface); border: 1px solid var(--line-soft);
  border-radius: var(--radius); padding: 28px;
}
.card h3 { margin: 0 0 10px; font-size: 18.5px; letter-spacing: -0.012em; font-weight: 620; }
.card p { margin: 0; color: var(--fg-muted); font-size: 15px; }

.pillar { position: relative; }
.pillar .num {
  display: block; margin-bottom: 14px;
  font-size: 13px; font-weight: 650; letter-spacing: 0.06em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}

.cap .intro { margin-bottom: 16px; }
.cap ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.cap li {
  position: relative; padding-inline-start: 20px;
  font-size: 14.5px; color: var(--fg-muted); line-height: 1.6;
}
.cap li::before {
  content: ""; position: absolute; inset-inline-start: 0; top: 9px;
  width: 7px; height: 7px; border-radius: 2px; background: var(--grad);
}
.cap .note {
  margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line-soft);
  font-size: 13.5px; color: var(--fg-dim);
}

.partner { text-align: center; }

/* ---------- download ---------- */
.download { margin-top: 8px; }
.download .card { text-align: center; }
.store-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 22px; }

/* ---------- contact ---------- */
.contact {
  margin-top: 40px; padding: 40px 28px; text-align: center;
  background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius);
}
.contact h3 { margin: 0 0 10px; font-size: 21px; font-weight: 640; }
.contact p { margin: 0 0 8px; color: var(--fg-muted); }
.contact .btn { margin-top: 14px; }
.contact .mail { margin-top: 16px; font-size: 14px; }
.contact .mail a { color: var(--fg-dim); }
.contact .mail a:hover { color: var(--fg); }

/* ---------- footer ---------- */
.site-footer { padding: 44px 0 56px; border-top: 1px solid var(--line-soft); background: var(--bg-alt); }
.site-footer .wrap { display: grid; gap: 18px; }
.disclaimer { margin: 0; max-width: 78ch; font-size: 13px; color: var(--fg-dim); line-height: 1.7; }
.fine { margin: 0; font-size: 13px; color: var(--fg-dim); }
.site-footer .langs { justify-content: flex-start; }

@media (max-width: 720px) {
  .site { gap: 14px; padding: 12px 18px; }
  .site-nav { order: 3; width: 100%; margin-inline-start: 0; gap: 18px; }
  .langs { margin-inline-start: auto; }
  .hero { padding: 64px 0 56px; }
  .band { padding: 60px 0; }
  .card { padding: 22px; }
  .contact { padding: 32px 20px; }
}

/* ---------- hero 两栏 + 竖屏短剧画面 ---------- */
.hero-grid {
  display: grid; gap: 56px; align-items: center;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
}
.hero-copy { min-width: 0; }

.hero-art {
  position: relative; height: 420px;
  display: flex; align-items: center; justify-content: center;
  perspective: 1000px;
}
.hero-art .frame {
  position: absolute; width: 200px; aspect-ratio: 9 / 16;
  border-radius: 18px; border: 1px solid var(--line);
}
.hero-art .back {
  background: linear-gradient(160deg, rgba(173,70,255,.30), rgba(255,0,92,.16));
  filter: blur(.4px);
}
.hero-art .back.a { transform: translateX(-104px) rotate(-9deg) scale(.92); opacity: .55; }
.hero-art .back.b { transform: translateX(104px) rotate(9deg) scale(.92); opacity: .55; }

.hero-art .front {
  position: relative; overflow: hidden;
  background: linear-gradient(165deg, #241436, #3a0f2c 55%, #4a0f28);
  border-color: rgba(255,255,255,.14);
  box-shadow: 0 30px 70px -20px rgba(0,0,0,.85), 0 0 0 1px rgba(255,255,255,.04) inset;
}
/* 色差描边，呼应 logo 的故障风 */
.hero-art .chrome {
  position: absolute; inset: 0; border-radius: 18px; pointer-events: none; mix-blend-mode: screen;
}
.hero-art .chrome.c { box-shadow: inset 2px 0 0 rgba(0,255,255,.55); }
.hero-art .chrome.m { box-shadow: inset -2px 0 0 rgba(255,0,255,.55); }

.hero-art .play {
  position: absolute; inset: 0; display: grid; place-items: center;
  color: rgba(255,255,255,.9);
}
.hero-art .play svg { filter: drop-shadow(0 4px 14px rgba(0,0,0,.6)); }

.hero-art .subs {
  position: absolute; left: 14px; right: 14px; bottom: 34px;
  display: grid; gap: 5px; text-align: center;
}
.hero-art .sub { margin: 0; font-size: 9.5px; line-height: 1.35; }
.hero-art .sub span {
  display: inline-block; padding: 3px 7px; border-radius: 5px;
  background: rgba(0,0,0,.55); color: rgba(255,255,255,.94);
}
.hero-art .sub.s1 span { color: rgba(255,255,255,.66); font-size: 9px; }
.hero-art .sub.s2 span { color: rgba(255,255,255,.5); font-size: 9px; }

.hero-art .eps {
  position: absolute; left: 14px; right: 14px; bottom: 16px;
  display: flex; gap: 4px;
}
.hero-art .eps i { flex: 1; height: 3px; border-radius: 2px; background: rgba(255,255,255,.22); }
.hero-art .eps i.on { background: var(--grad); }

/* ---------- 能力区层级 ---------- */
.feature-row { margin-bottom: 20px; }
.cap.featured .short {
  margin: 0 0 14px; color: var(--fg); font-size: 16px; font-weight: 560; line-height: 1.5;
}
.cap.featured .proof {
  margin: 0 0 18px; padding: 10px 12px; border-radius: 9px;
  background: rgba(173,70,255,.08); border: 1px solid rgba(173,70,255,.18);
  font-size: 13.5px; color: var(--fg-muted);
}
.cap.featured ul { padding-top: 4px; }

.cap-compact { margin: 0; padding: 0; list-style: none; display: grid; gap: 0; }
.cap-compact li {
  display: grid; grid-template-columns: minmax(180px, 260px) 1fr; gap: 20px; align-items: baseline;
  padding: 18px 4px; border-top: 1px solid var(--line-soft);
}
.cap-compact li:last-child { border-bottom: 1px solid var(--line-soft); }
.cap-compact strong { font-size: 15.5px; font-weight: 600; }
.cap-compact span { color: var(--fg-muted); font-size: 14.5px; }

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-art { height: 340px; }
  .hero-art .frame { width: 168px; }
  .cap-compact li { grid-template-columns: 1fr; gap: 4px; }
}