/* ============================================================================
   StreamArena panel: brand theme.
   Split out of the reference template's inline <style> block so the markup
   stays readable. Only variables and the x-* component styles live here; the
   shared design tokens come from hark.css.
   ========================================================================= */

:root {
  color-scheme: dark;
  --x-bg: #0b0b14;
  --x-bg-2: #12121f;
  --x-a: #7c3aed;
  --x-b: #db2777;
  --x-grad: linear-gradient(135deg, var(--x-a), var(--x-b));
  --x-text: #ffffff;
  --x-muted: #b9b9cc;
  --x-line: rgb(255 255 255 / 0.1);
  --x-glass: #17172a;
  --x-glass-hover: #22223a;
  --x-pink-text: #f0abfc;
  --x-glow: 0 10px 40px rgb(219 39 119 / 0.35);
  --x-sans: "Geist", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

body.x-body {
  background: var(--x-bg);
  color: var(--x-text);
  font-family: var(--x-sans);
  line-height: 1.6;
  padding-bottom: 0;
}
.x-body ::selection { background: var(--x-b); color: #fff; }
.x-body :focus-visible { outline: 2px solid var(--x-b); outline-offset: 3px; }
.x-wrap { max-width: var(--page-max); margin: 0 auto; padding-inline: var(--gutter); }

/* 导航 */
.x-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgb(11 11 20 / 0.72);
  -webkit-backdrop-filter: blur(18px) saturate(1.4); backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid var(--x-line);
}
.x-nav .x-wrap { display: flex; align-items: center; gap: 16px; min-height: 60px; }
.x-logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: var(--weight-bold); font-size: 17px; white-space: nowrap; min-height: var(--tap); color: inherit; }
.x-logo__icon { width: 32px; height: 32px; border-radius: 10px; background: var(--x-grad); display: grid; place-items: center; box-shadow: var(--x-glow); flex: none; }
.x-nav__links { display: flex; gap: 4px; margin-left: auto; }
.x-nav__links a { color: var(--x-muted); text-decoration: none; font-size: var(--size-small); padding: 0 10px; min-height: var(--tap); display: inline-flex; align-items: center; border-radius: var(--r-pill); transition: color var(--dur-quick) var(--ease-out); }
.x-nav__links a:hover { color: var(--x-text); }
@media (max-width: 640px) { .x-nav__links { display: none; } .x-nav .x-btn--sm { margin-left: auto; } }

/* 按钮 */
.x-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: var(--tap); padding: 10px 18px; border-radius: var(--r-pill);
  font: var(--weight-medium) var(--size-body)/1.2 var(--x-sans); color: var(--x-text); text-decoration: none;
  background: var(--x-glass); border: 1px solid rgb(255 255 255 / 0.18);
  transition: transform var(--dur-quick) var(--ease-out), box-shadow var(--dur-quick) var(--ease-out), background var(--dur-quick) var(--ease-out);
  cursor: pointer;
}
.x-btn:hover { background: var(--x-glass-hover); transform: translateY(-1px); }
.x-btn svg { flex: none; }
.x-btn--primary { background: #a3307f var(--x-grad); border-color: transparent; box-shadow: var(--x-glow); }
.x-btn--primary:hover { background: #a3307f var(--x-grad); box-shadow: 0 14px 50px rgb(219 39 119 / 0.5); }
.x-btn--lg { min-height: 56px; padding: 14px 28px; font-size: 17px; font-weight: var(--weight-bold); }
.x-btn--sm { min-height: var(--tap); padding: 6px 16px; font-size: var(--size-small); }
.x-btn--block { width: 100%; }

/* 首屏 */
.x-hero { position: relative; isolation: isolate; overflow: hidden; border-bottom: 1px solid var(--x-line); }
.x-hero__bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 70% center; z-index: -2; max-width: none; }
.x-hero::before { content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(90deg, rgb(11 11 20 / 0.96) 0%, rgb(11 11 20 / 0.82) 45%, rgb(11 11 20 / 0.35) 100%), linear-gradient(0deg, var(--x-bg) 0%, transparent 35%); }
.x-hero .x-wrap { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; padding-block: 48px 56px; align-items: center; }
@media (min-width: 900px) { .x-hero .x-wrap { grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr); padding-block: 88px 96px; } }
.x-eyebrow { display: inline-flex; padding: 4px 12px; border-radius: var(--r-pill); font-size: var(--size-meta); font-weight: var(--weight-medium); color: #f5d0fe; background: #24143f; border: 1px solid rgb(219 39 119 / 0.4); }
.x-hero h1 { margin-top: 16px; font-size: clamp(30px, 6vw, 54px); line-height: 1.18; font-weight: var(--weight-bold); letter-spacing: -0.01em; }
.x-grad-text { color: var(--x-pink-text); }
.x-hero__sub { margin-top: 16px; color: var(--x-muted); font-size: var(--size-lede); max-width: 36em; }
.x-dl { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 10px; }
.x-dl .x-btn--primary { flex-basis: 100%; }
@media (min-width: 560px) { .x-dl .x-btn--primary { flex-basis: auto; } }
.x-meta { margin-top: 16px; font-size: var(--size-meta); color: var(--x-muted); }.x-badges { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px 16px; padding: 0; list-style: none; }
.x-badges li { display: inline-flex; align-items: center; gap: 6px; font-size: var(--size-meta); color: var(--x-text); }
.x-badges svg { color: #34d399; }
.x-hero__phone { position: relative; justify-self: center; width: min(300px, 70vw); }
.x-hero__phone::before { content: ""; position: absolute; inset: 10% -10%; background: var(--x-grad); filter: blur(70px); opacity: 0.55; border-radius: 50%; z-index: -1; }
.x-hero__phone img { width: 100%; height: auto; animation: x-float 6s ease-in-out infinite; }
@keyframes x-float { 50% { transform: translateY(-12px); } }
@media (max-width: 899px) { .x-hero__phone { width: min(240px, 62vw); } }
@media (prefers-reduced-motion: reduce) { .x-hero__phone img { animation: none; } .x-btn:hover { transform: none; } }

/* 区块 */
.x-sec { padding-block: 72px 0; scroll-margin-top: 64px; }
.x-sec__head { text-align: center; max-width: 40em; margin: 0 auto 32px; }
.x-sec__eyebrow { font-size: var(--size-meta); font-weight: var(--weight-medium); letter-spacing: 0.12em; }
.x-sec h2 { margin-top: 8px; font-size: clamp(24px, 4vw, 36px); line-height: 1.25; font-weight: var(--weight-bold); }
.x-sec__sub { margin-top: 8px; color: var(--x-muted); }
.x-grid { display: grid; gap: 14px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 600px) { .x-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 960px) { .x-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } .x-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.x-card { padding: 22px; border-radius: var(--r-l); background: linear-gradient(180deg, #181828, #111120); border: 1px solid var(--x-line); transition: border-color var(--dur-quick) var(--ease-out), transform var(--dur-quick) var(--ease-out); }
.x-card:hover { border-color: rgb(219 39 119 / 0.45); }
.x-card h3 { font-size: 18px; font-weight: var(--weight-bold); margin-top: 14px; }
.x-card p { margin-top: 6px; color: var(--x-muted); font-size: var(--size-small); }
.x-icon { width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center; background: rgb(124 58 237 / 0.18); border: 1px solid rgb(219 39 119 / 0.35); color: #f0abfc; }

/* 安装教程 */
.x-tabs { max-width: 760px; margin: 0 auto; }
.x-panel { margin-top: 18px; }
.x-steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; counter-reset: s; }
.x-steps li { counter-increment: s; display: flex; gap: 14px; align-items: flex-start; padding: 16px 18px; border-radius: var(--r-m); background: var(--x-glass); border: 1px solid var(--x-line); }
.x-steps li::before { content: counter(s); flex: none; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: var(--x-grad); font-weight: var(--weight-bold); font-size: var(--size-small); }
.x-steps li > div { padding-top: 4px; }
.x-steps small { display: block; color: var(--x-muted); font-size: var(--size-meta); }

/* 截图轮播 */
.x-shots { display: flex; gap: 18px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 20px var(--gutter) 28px; margin-inline: calc(var(--gutter) * -1); scrollbar-width: thin; }
@media (min-width: 1000px) { .x-shots { justify-content: center; } }
.x-shot { flex: none; width: 210px; scroll-snap-align: center; text-align: center; }
.x-shot figcaption { margin-top: 12px; font-size: var(--size-small); color: var(--x-muted); }
.x-shot__img { width: 100%; height: 408px; object-fit: contain; filter: drop-shadow(0 18px 30px rgb(124 58 237 / 0.35)); }

/* 常见问题 */
.x-faq { max-width: 760px; margin: 0 auto; display: grid; gap: 10px; }
.x-faq details { border-radius: var(--r-m); background: var(--x-glass); border: 1px solid var(--x-line); }
.x-faq details[open] { border-color: rgb(219 39 119 / 0.4); }
.x-faq summary { list-style: none; cursor: pointer; min-height: 56px; padding: 14px 52px 14px 18px; position: relative; font-weight: var(--weight-medium); display: flex; align-items: center; }
.x-faq summary::-webkit-details-marker { display: none; }
.x-faq summary::after { content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); font-size: 22px; line-height: 1; color: #f0abfc; transition: transform var(--dur-quick) var(--ease-out); }
.x-faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.x-faq details p { padding: 0 18px 16px; color: var(--x-muted); font-size: var(--size-small); }

/* 底部号召 */
.x-cta { margin-top: 80px; padding: 48px 24px; border-radius: var(--r-xl); text-align: center; position: relative; overflow: hidden; isolation: isolate; background: linear-gradient(135deg, rgb(124 58 237 / 0.35), rgb(219 39 119 / 0.3)); border: 1px solid rgb(219 39 119 / 0.35); }
.x-cta::before { content: ""; position: absolute; width: 360px; height: 360px; right: -120px; top: -160px; border-radius: 50%; background: var(--x-b); filter: blur(90px); opacity: 0.45; z-index: -1; }
.x-cta h2 { font-size: clamp(26px, 5vw, 40px); font-weight: var(--weight-bold); line-height: 1.2; }
.x-cta p { margin: 10px auto 24px; color: #e9d5ff; }

/* 页脚 */
.x-foot { margin-top: 64px; padding-block: 28px 32px; border-top: 1px solid var(--x-line); color: var(--x-muted); font-size: var(--size-meta); }
.x-foot .x-wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; justify-content: space-between; }
.x-foot nav { display: flex; gap: 4px 16px; flex-wrap: wrap; }
.x-foot a { color: var(--x-muted); text-decoration: none; min-height: var(--tap); min-width: var(--tap); padding-inline: 4px; justify-content: center; display: inline-flex; align-items: center; }
.x-foot a:hover { color: var(--x-text); }
.x-foot__note { flex-basis: 100%; font-size: var(--size-caption); }

/* 手机底部下载条 */
.x-bar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; display: none; align-items: center; gap: 12px; padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom)); background: rgb(11 11 20 / 0.86); -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px); border-top: 1px solid var(--x-line); }
.x-bar__text { flex: 1; min-width: 0; font-size: var(--size-small); line-height: 1.3; }
.x-bar__text small { display: block; color: var(--x-muted); font-size: var(--size-caption); }
@media (max-width: 759px) { .x-bar { display: flex; } body.x-body { padding-bottom: 76px; } }