/* ===== macOS 玻璃拟态设计系统 ===== */
:root {
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro SC",
          "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --r-xl: 22px;
  --r-lg: 16px;
  --r-md: 11px;
  --r-sm: 8px;

  --txt: #1d1d1f;
  --txt-2: #6e6e73;
  --txt-3: #98989d;
  --line: rgba(0, 0, 0, .08);

  --glass: rgba(255, 255, 255, .66);
  --glass-2: rgba(255, 255, 255, .45);
  --stroke: rgba(255, 255, 255, .7);
  --blur: saturate(180%) blur(30px);

  --shadow-lg: 0 20px 60px rgba(31, 41, 55, .16), 0 2px 8px rgba(31, 41, 55, .06);
  --shadow-md: 0 8px 28px rgba(31, 41, 55, .10);

  --blue: #007aff;
  --blue-d: #0062cc;
  --green: #34c759;
  --orange: #ff9500;
  --red: #ff3b30;
  --gray: #8e8e93;
}

@media (prefers-color-scheme: dark) {
  :root {
    --txt: #f5f5f7;
    --txt-2: #a1a1a6;
    --txt-3: #6e6e73;
    --line: rgba(255, 255, 255, .12);
    --glass: rgba(38, 38, 42, .64);
    --glass-2: rgba(58, 58, 62, .45);
    --stroke: rgba(255, 255, 255, .12);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, .5);
    --shadow-md: 0 8px 28px rgba(0, 0, 0, .38);
    --blue: #0a84ff;
    --blue-d: #409cff;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  font: 15px/1.65 var(--font);
  color: var(--txt);
  background: #e9edf3;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
@media (prefers-color-scheme: dark) { body { background: #16161a; } }

/* 背景光斑：模拟 macOS 桌面壁纸 */
.blobs { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.blobs i {
  position: absolute; display: block; border-radius: 50%;
  filter: blur(90px); opacity: .55;
  animation: drift 26s ease-in-out infinite alternate;
}
.blobs i:nth-child(1) { width: 46vw; height: 46vw; left: -8vw;  top: -10vh; background: #7aa8ff; }
.blobs i:nth-child(2) { width: 40vw; height: 40vw; right: -6vw; top: 8vh;   background: #ffa5c8; animation-delay: -8s; }
.blobs i:nth-child(3) { width: 42vw; height: 42vw; left: 22vw;  bottom: -18vh; background: #9be7d0; animation-delay: -15s; }
@keyframes drift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(4vw, 5vh, 0) scale(1.12); }
}
@media (prefers-reduced-motion: reduce) { .blobs i { animation: none; } }

/* ===== 布局 ===== */
.wrap { max-width: 780px; margin: 0 auto; padding: 40px 18px 64px; }
.wrap.wide { max-width: 1120px; }

/* ===== 玻璃窗口 ===== */
.win {
  background: var(--glass);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  border: 1px solid var(--stroke);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  margin-bottom: 18px;
}
.win-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.34), rgba(255,255,255,0));
}
.tl { display: flex; gap: 7px; }
.tl i { width: 12px; height: 12px; border-radius: 50%; box-shadow: inset 0 0 0 .5px rgba(0,0,0,.12); }
.tl i:nth-child(1) { background: #ff5f57; }
.tl i:nth-child(2) { background: #febc2e; }
.tl i:nth-child(3) { background: #28c840; }
.win-title { font-size: 13px; font-weight: 600; color: var(--txt-2); letter-spacing: .2px; }
.win-body { padding: 22px; }
.win-body > :first-child { margin-top: 0; }
.win-body > :last-child { margin-bottom: 0; }

/* ===== 文字 ===== */
h1 { font-size: 27px; font-weight: 700; letter-spacing: -.5px; margin: 0 0 6px; }
h2 { font-size: 17px; font-weight: 600; margin: 0 0 14px; }
.sub { color: var(--txt-2); font-size: 14px; margin: 0 0 22px; }
.muted { color: var(--txt-2); font-size: 13px; }
.tiny { color: var(--txt-3); font-size: 12px; }

/* ===== 顶栏 ===== */
.top { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-bottom: 22px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: 600 14px/1 var(--font);
  padding: 10px 18px; border: 0; border-radius: var(--r-md);
  background: var(--glass-2); color: var(--txt);
  box-shadow: inset 0 0 0 1px var(--line), 0 1px 2px rgba(0,0,0,.05);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: transform .12s ease, filter .16s ease, box-shadow .16s ease;
}
.btn:hover { filter: brightness(1.05); }
.btn:active { transform: scale(.97); }
.btn:focus-visible { outline: 3px solid rgba(0,122,255,.45); outline-offset: 2px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; transform: none; }
.btn-primary {
  background: linear-gradient(180deg, var(--blue), var(--blue-d));
  color: #fff; box-shadow: 0 4px 14px rgba(0,122,255,.34);
}
.btn-danger { background: linear-gradient(180deg, #ff5f57, #e0342a); color: #fff; box-shadow: 0 4px 14px rgba(255,59,48,.3); }
.btn-sm { padding: 6px 12px; font-size: 12.5px; border-radius: var(--r-sm); }
.btn-block { width: 100%; }

/* ===== 表单 ===== */
label { display: block; font-size: 12px; font-weight: 600; color: var(--txt-2); margin-bottom: 5px; }
input, select, textarea {
  width: 100%; font: 14px/1.5 var(--font); color: var(--txt);
  padding: 10px 12px; border: 1px solid var(--line); border-radius: var(--r-md);
  background: rgba(255,255,255,.6);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  transition: border-color .16s, box-shadow .16s;
}
@media (prefers-color-scheme: dark) { input, select, textarea { background: rgba(0,0,0,.24); } }
input:focus, select:focus, textarea:focus {
  outline: 0; border-color: var(--blue); box-shadow: 0 0 0 4px rgba(0,122,255,.16);
}
textarea { min-height: 150px; font-family: var(--mono); font-size: 13px; resize: vertical; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; }
.grid-end { display: flex; align-items: flex-end; }

/* ===== 列表项 ===== */
.item {
  display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  padding: 15px 0; border-bottom: 1px solid var(--line);
}
.item:last-child { border-bottom: 0; padding-bottom: 0; }
.item:first-child { padding-top: 0; }
.item-name { font-weight: 600; font-size: 15px; }
.price { font-size: 19px; font-weight: 700; letter-spacing: -.3px; }
.price small { font-size: 12px; font-weight: 600; color: var(--txt-2); }

/* ===== 徽标 ===== */
.badge {
  display: inline-block; font-size: 11.5px; font-weight: 600; line-height: 1.5;
  padding: 2px 9px; border-radius: 999px;
  background: rgba(142,142,147,.18); color: var(--txt-2);
}
.badge.ok   { background: rgba(52,199,89,.18);  color: #1a7f37; }
.badge.warn { background: rgba(255,149,0,.18);  color: #a86300; }
.badge.bad  { background: rgba(255,59,48,.16);  color: #c3271e; }
.badge.info { background: rgba(0,122,255,.16);  color: #0062cc; }
@media (prefers-color-scheme: dark) {
  .badge.ok { color: #6ee787; } .badge.warn { color: #ffc266; }
  .badge.bad { color: #ff8a80; } .badge.info { color: #6cb6ff; }
}

/* ===== 统计 ===== */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 14px; }
.stat {
  padding: 16px; border-radius: var(--r-lg);
  background: var(--glass-2); box-shadow: inset 0 0 0 1px var(--line);
}
.stat b { display: block; font-size: 26px; font-weight: 700; letter-spacing: -.6px; }
.stat span { font-size: 12px; color: var(--txt-2); }

/* ===== 表格 ===== */
.tbl-scroll { overflow-x: auto; margin: 0 -6px; padding: 0 6px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 8px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
th { font-size: 11.5px; font-weight: 700; color: var(--txt-2); text-transform: uppercase; letter-spacing: .4px; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
code {
  font: 12.5px/1.5 var(--mono);
  background: rgba(120,120,128,.14); padding: 2px 6px; border-radius: 5px;
  word-break: break-all;
}

/* ===== 分段控件（macOS Segmented Control）===== */
.seg {
  display: inline-flex; gap: 2px; padding: 3px;
  background: rgba(120,120,128,.14); border-radius: var(--r-md);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  overflow-x: auto; max-width: 100%;
}
.seg button {
  border: 0; background: transparent; color: var(--txt-2);
  font: 600 13px/1 var(--font); padding: 8px 15px; border-radius: 8px;
  cursor: pointer; white-space: nowrap; transition: background .16s, color .16s;
}
.seg button[aria-selected="true"] {
  background: rgba(255,255,255,.92); color: var(--txt);
  box-shadow: 0 1px 3px rgba(0,0,0,.14);
}
@media (prefers-color-scheme: dark) { .seg button[aria-selected="true"] { background: rgba(90,90,96,.9); } }

/* ===== 兑换码展示 ===== */
.code-box {
  font: 16px/1.6 var(--mono); text-align: center; letter-spacing: .5px;
  padding: 18px 16px; margin: 14px 0;
  border-radius: var(--r-lg); word-break: break-all;
  background: rgba(255,255,255,.55); border: 1px dashed rgba(0,122,255,.4);
}
@media (prefers-color-scheme: dark) { .code-box { background: rgba(0,0,0,.28); } }

/* ===== 步骤条 ===== */
.steps { list-style: none; counter-reset: s; padding: 0; margin: 16px 0 0; }
.steps li {
  counter-increment: s; position: relative; padding: 0 0 0 32px; margin-bottom: 9px;
  font-size: 13.5px; color: var(--txt-2);
}
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 1px;
  width: 21px; height: 21px; border-radius: 50%;
  background: var(--blue); color: #fff;
  font: 700 11px/21px var(--font); text-align: center;
}

/* ===== 提示条 ===== */
.alert {
  padding: 11px 14px; border-radius: var(--r-md); font-size: 13.5px;
  background: rgba(255,149,0,.14); box-shadow: inset 0 0 0 1px rgba(255,149,0,.28);
}
.alert.bad { background: rgba(255,59,48,.12); box-shadow: inset 0 0 0 1px rgba(255,59,48,.26); }
.alert.info { background: rgba(0,122,255,.11); box-shadow: inset 0 0 0 1px rgba(0,122,255,.24); }

/* ===== Toast ===== */
#toast {
  position: fixed; left: 50%; bottom: 34px; transform: translate(-50%, 20px);
  padding: 11px 22px; border-radius: 999px;
  background: rgba(28,28,30,.86); color: #fff; font-size: 13.5px; font-weight: 600;
  -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  box-shadow: 0 10px 34px rgba(0,0,0,.28);
  opacity: 0; pointer-events: none; transition: opacity .22s, transform .22s; z-index: 99;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }

.center { text-align: center; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.spacer { flex: 1; }
.hide { display: none !important; }

@media (max-width: 560px) {
  .wrap { padding: 24px 14px 48px; }
  h1 { font-size: 23px; }
  .win-body { padding: 18px 16px; }
  .item { align-items: flex-start; }
}