/* 达者同游 · 软件中心 — 设计系统 v20261104
   依据 KBS「Apple 设计美学 × AI 生成 UI」规范：
   · 中性底 + 单一强调色，文字用灰阶分层而不是纯黑/纯白
   · 间距走 8pt 节奏，区块之间留白 > 区块之内留白
   · 圆角成体系（20 容器 / 12 内部 / 8 小件），不随手写
   · 毛玻璃 = 半透明 + blur + 1px 细描边，阴影轻而扩散
   · 深色/浅色是整套变量切换，不是反色
   · 动效有方向（hover 上浮 2px、箭头右移），并尊重 prefers-reduced-motion
*/

:root {
  color-scheme: dark;
  --bg: #080c14;
  --bg-2: #0b111c;
  --surface: rgba(255, 255, 255, .045);
  --surface-2: rgba(255, 255, 255, .075);
  --hairline: rgba(255, 255, 255, .09);
  --hairline-2: rgba(255, 255, 255, .18);
  --nav-bg: rgba(8, 12, 20, .72);
  --text: #eef2f8;
  --text-2: #a4b1c3;
  --text-3: #6d7c92;
  --accent: #7aa2ff;
  --accent-ink: #060f1e;
  --accent-soft: rgba(122, 162, 255, .13);
  --ok: #57d3b4;
  --warn: #e8b976;
  --r-xl: 24px;
  --r-lg: 20px;
  --r-md: 12px;
  --r-sm: 8px;
  --maxw: 1120px;
  --nav-h: 64px;
  --shadow: 0 18px 48px rgba(0, 0, 0, .45);
  --ease: cubic-bezier(.2, .7, .3, 1);
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #f6f7fa;
    --bg-2: #eef1f6;
    --surface: rgba(255, 255, 255, .72);
    --surface-2: rgba(255, 255, 255, .95);
    --hairline: rgba(16, 24, 40, .09);
    --hairline-2: rgba(16, 24, 40, .2);
    --nav-bg: rgba(246, 247, 250, .78);
    --text: #111827;
    --text-2: #4a5668;
    --text-3: #5e6a7d;
    --accent: #2f62d8;
    --accent-ink: #fff;
    --accent-soft: rgba(47, 98, 216, .09);
    --ok: #0f9d7a;
    --warn: #a3721c;
    --shadow: 0 18px 40px rgba(16, 24, 40, .1);
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: .005em;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(720px 420px at 12% -6%, var(--accent-soft), transparent 70%),
    radial-gradient(680px 420px at 92% 4%, rgba(87, 211, 180, .07), transparent 70%);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

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

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

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav-bg);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--hairline);
}

.nav-inner {
  height: var(--nav-h);
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 16.5px;
  font-weight: 650;
  letter-spacing: -.01em;
  white-space: nowrap;
}

.brand .logo {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 800;
  font-size: 15px;
}

.brand em {
  font-style: normal;
  font-weight: 450;
  font-size: 13px;
  color: var(--text-3);
  padding-left: 12px;
  margin-left: 4px;
  border-left: 1px solid var(--hairline);
}

.nav .links { display: flex; align-items: center; gap: 2px; }

.nav .links a {
  color: var(--text-2);
  font-size: 14.5px;
  padding: 7px 12px;
  border-radius: var(--r-sm);
  transition: color .18s var(--ease), background .18s var(--ease);
}

.nav .links a:hover { color: var(--text); background: var(--surface); }

.nav .links a[aria-current="page"] {
  color: var(--text);
  background: var(--accent-soft);
  font-weight: 600;
}

.burger {
  display: none;
  background: none;
  border: 1px solid var(--hairline);
  border-radius: var(--r-sm);
  color: var(--text);
  width: 38px;
  height: 38px;
  font-size: 17px;
  cursor: pointer;
}

/* ---------- 页头 ---------- */
.hero { padding: 88px 0 40px; }
.eyebrow {
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
}
.hero h1 {
  margin-top: 20px;
  font-size: clamp(32px, 4.8vw, 52px);
  line-height: 1.14;
  letter-spacing: -.022em;
  font-weight: 680;
  max-width: 860px;
  text-wrap: balance;
}
.hero .lead {
  margin-top: 20px;
  max-width: 680px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-2);
}
.hero .cta { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px; }

.crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 32px;
  font-size: 13px;
  color: var(--text-3);
}
.crumb a { color: var(--text-3); transition: color .18s var(--ease); }
.crumb a:hover { color: var(--accent); }
.crumb .sep { opacity: .5; }

.page-head { padding: 16px 0 8px; }
.page-head h1 {
  font-size: clamp(30px, 4.2vw, 44px);
  line-height: 1.18;
  letter-spacing: -.02em;
  font-weight: 680;
  text-wrap: balance;
}
.page-head .lead {
  margin-top: 16px;
  max-width: 720px;
  font-size: 16.5px;
  color: var(--text-2);
}

/* ---------- Bento 卡片 ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.tile {
  grid-column: span 12;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 32px;
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--hairline);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
  color: inherit;
  transition: transform .18s var(--ease), background .18s var(--ease),
    border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.tile:hover {
  transform: translateY(-2px);
  background: var(--surface-2);
  border-color: var(--hairline-2);
  box-shadow: var(--shadow);
}
.tile .kicker {
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
}
.tile h2, .tile h3 {
  font-size: 21px;
  font-weight: 640;
  letter-spacing: -.012em;
  line-height: 1.35;
}
.tile p { font-size: 14.8px; line-height: 1.7; color: var(--text-2); }
.tile .go {
  margin-top: auto;
  padding-top: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13.5px;
  color: var(--text-3);
}
.tile .arrow {
  font-size: 17px;
  color: var(--text-3);
  transition: transform .18s var(--ease), color .18s var(--ease);
}
.tile:hover .arrow { transform: translateX(4px); color: var(--accent); }

.span-7 { grid-column: span 7; }
.span-6 { grid-column: span 6; }
.span-5 { grid-column: span 5; }
.span-4 { grid-column: span 4; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-size: 12.5px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  color: var(--text-2);
  white-space: nowrap;
}
.chip.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 35%, transparent); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .18s var(--ease), background .18s var(--ease),
    border-color .18s var(--ease), color .18s var(--ease), filter .18s var(--ease);
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 10px 26px var(--accent-soft);
}
.btn-primary:hover { transform: translateY(-1px); filter: brightness(1.06); }
.btn-ghost { border-color: var(--hairline-2); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- 下载面板 ---------- */
.dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 28px 32px;
  border-radius: var(--r-lg);
  border: 1px solid var(--hairline);
  background:
    linear-gradient(135deg, var(--accent-soft), transparent 62%),
    var(--surface);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}
.dl .kicker {
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
}
.dl h2 {
  margin-top: 8px;
  font-size: 25px;
  font-weight: 660;
  letter-spacing: -.015em;
}
.dl .meta { margin-top: 6px; font-size: 14px; color: var(--text-2); }
.dl .sha {
  grid-column: 1 / -1;
  margin-top: 4px;
  padding-top: 16px;
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-3);
}
.dl .sha code {
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 11.8px;
  word-break: break-all;
  color: var(--text-2);
}
.copy {
  background: none;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  color: var(--text-3);
  font-size: 11.5px;
  padding: 3px 9px;
  cursor: pointer;
  transition: color .18s, border-color .18s;
}
.copy:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- 区块 ---------- */
.section { padding: 56px 0; }
.section + .section { padding-top: 8px; }
.section-head { margin-bottom: 28px; }
.section-head h2 {
  font-size: 23px;
  font-weight: 650;
  letter-spacing: -.012em;
}
.section-head .sub { margin-top: 8px; font-size: 15px; color: var(--text-2); }

.card-block {
  padding: 28px 32px;
  border-radius: var(--r-lg);
  border: 1px solid var(--hairline);
  background: var(--surface);
}

/* 列表 */
ul.plain { list-style: none; display: grid; gap: 14px; }
ul.plain li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-2);
}
ul.plain li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: .75;
}
ul.plain strong { color: var(--text); font-weight: 600; }

/* 步骤 */
ol.steps { list-style: none; counter-reset: s; display: grid; gap: 18px; }
ol.steps li {
  counter-increment: s;
  position: relative;
  padding-left: 44px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-2);
}
ol.steps li::before {
  content: counter(s);
  position: absolute;
  left: 0;
  top: 1px;
  width: 28px;
  height: 28px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--hairline);
}
ol.steps strong { color: var(--text); font-weight: 600; }

/* 规格表 */
.spec {
  display: grid;
  grid-template-columns: 168px 1fr;
  border-top: 1px solid var(--hairline);
}
.spec dt, .spec dd {
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 14.5px;
  line-height: 1.65;
}
.spec dt { color: var(--text-3); font-size: 13.5px; }
.spec dd { color: var(--text-2); }
.spec dd strong { color: var(--text); font-weight: 600; }

/* 数据表 */
.table-wrap {
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  overflow: hidden;
}
table.t { width: 100%; border-collapse: collapse; font-size: 14px; }
table.t th {
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--text-3);
  background: var(--surface);
}
table.t td {
  padding: 12px 16px;
  border-top: 1px solid var(--hairline);
  color: var(--text-2);
  vertical-align: top;
  overflow-wrap: anywhere;
}

/* 代码 */
code {
  font-family: ui-monospace, SFMono-Regular, Consolas, "JetBrains Mono", monospace;
  font-size: .88em;
  background: var(--surface-2);
  border-radius: 6px;
  padding: 2px 6px;
  color: var(--text);
  overflow-wrap: anywhere;
}
pre {
  background: var(--bg-2);
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  padding: 18px 20px;
  overflow-x: auto;
  font-size: 13.2px;
  line-height: 1.75;
  margin: 14px 0 4px;
}
pre code { background: none; padding: 0; color: var(--text-2); }
pre .cm { color: var(--text-3); }

/* 折叠 */
details.log {
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  background: var(--surface);
  padding: 0 20px;
}
details.log + details.log { margin-top: 10px; }
details.log summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}
details.log summary::-webkit-details-marker { display: none; }
details.log summary::after { content: "+"; color: var(--text-3); font-weight: 400; }
details.log[open] summary::after { content: "−"; }
details.log .log-body { padding: 0 0 18px; font-size: 14.5px; color: var(--text-2); }
details.log .log-body p + p { margin-top: 10px; }

.note {
  border-left: 2px solid var(--warn);
  background: color-mix(in srgb, var(--warn) 8%, transparent);
  padding: 12px 16px;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 14px;
  color: var(--text-2);
}
.note strong { color: var(--text); }

.muted { color: var(--text-3); }
.small { font-size: 13.5px; }

/* ---------- 页脚 ---------- */
.footer {
  margin-top: auto;
  padding: 40px 0 56px;
  border-top: 1px solid var(--hairline);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-3);
  text-align: center;
}
.footer-links { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--text-3); transition: color .18s var(--ease); }
.footer-links a:hover { color: var(--accent); }

/* ---------- 响应式：1200 / 992 / 768 ---------- */
@media (max-width: 992px) {
  .span-7, .span-5 { grid-column: span 6; }
  .span-4 { grid-column: span 6; }
  .hero { padding: 72px 0 32px; }
}

@media (max-width: 768px) {
  .span-7, .span-6, .span-5, .span-4 { grid-column: span 12; }
  .bento { gap: 16px; }
  .tile { padding: 24px; }
  .dl { grid-template-columns: 1fr; padding: 24px; }
  .dl .btn { width: 100%; }
  .spec { grid-template-columns: 1fr; }
  .spec dt { padding-bottom: 0; border-bottom: 0; }
  .spec dd { padding-top: 4px; }
  .section { padding: 40px 0; }
  .nav .links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 16px 18px;
    background: var(--nav-bg);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--hairline);
  }
  .nav .links.open { display: flex; }
  .nav .links a { padding: 12px 14px; font-size: 16px; }
  .burger { display: grid; place-items: center; }
  .brand em { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
  .tile:hover { transform: none; }
  .tile:hover .arrow { transform: none; }
  .btn-primary:hover { transform: none; }
}