/* xc.wangolun.com 静态下载单页 —— 纯手写，无框架、无外部依赖 */

:root {
  --bg: #111323;
  --bg-deep: #0b0c17;
  --violet: #7b5cff;
  --violet-soft: #9a86ff;
  --blue: #3d7bff;
  --cyan: #4fd1ff;
  --text: #f2f3fb;
  --text-dim: #a8adcb;
  --text-faint: #8b91b6;
  --card: rgba(255, 255, 255, 0.045);
  --card-border: rgba(255, 255, 255, 0.09);
  --radius: 26px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

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

/* ---------- 环境光 ---------- */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(120% 80% at 50% -10%, #1a1f45 0%, rgba(17, 19, 35, 0) 60%),
    linear-gradient(180deg, #141731 0%, var(--bg) 45%, var(--bg-deep) 100%);
}

.glow {
  position: absolute;
  display: block;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.5;
}

.glow-a {
  width: 340px;
  height: 340px;
  top: -120px;
  left: 50%;
  margin-left: -170px;
  background: radial-gradient(circle, rgba(123, 92, 255, 0.85) 0%, rgba(123, 92, 255, 0) 70%);
}

.glow-b {
  width: 300px;
  height: 300px;
  top: 26%;
  left: -140px;
  background: radial-gradient(circle, rgba(61, 123, 255, 0.7) 0%, rgba(61, 123, 255, 0) 70%);
}

.glow-c {
  width: 280px;
  height: 280px;
  bottom: 4%;
  right: -130px;
  background: radial-gradient(circle, rgba(79, 209, 255, 0.45) 0%, rgba(79, 209, 255, 0) 70%);
}

/* ---------- 版心 ---------- */
.page {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 460px;
  margin: 0 auto;
  padding: 32px 18px calc(28px + env(safe-area-inset-bottom, 0px));
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}

.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 30px 20px 24px;
  text-align: center;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 24px 60px rgba(4, 6, 18, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

/* ---------- 品牌图标 ---------- */
.logo-wrap {
  width: 104px;
  height: 104px;
  margin: 0 auto 20px;
  padding: 8px;
  border-radius: 26px;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 34px rgba(123, 92, 255, 0.32);
}

.logo {
  width: 100%;
  height: 100%;
  border-radius: 20px;
}

/* ---------- 文案 ---------- */
.title {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: linear-gradient(96deg, #ffffff 0%, #cfd6ff 55%, #9a86ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.app-name {
  margin: 0 0 14px;
  font-size: 15px;
  color: var(--text-dim);
  letter-spacing: 0.14em;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 16px;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12.5px;
  color: #d7dcff;
  border-radius: 999px;
  background: rgba(123, 92, 255, 0.16);
  border: 1px solid rgba(123, 92, 255, 0.34);
}

.release-note {
  margin: 0 0 24px;
  font-size: 14px;
  color: var(--text-dim);
}

/* ---------- 下载按钮 ---------- */
.btn-download {
  display: block;
  width: 100%;
  padding: 17px 16px;
  border: 0;
  border-radius: 16px;
  font-size: 17.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #fff;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  background: linear-gradient(96deg, var(--violet) 0%, var(--blue) 100%);
  box-shadow: 0 14px 34px rgba(88, 90, 255, 0.42);
  transition: transform 0.16s ease, box-shadow 0.16s ease, filter 0.16s ease;
}

.btn-download:hover { filter: brightness(1.06); }

.btn-download:active {
  transform: translateY(1px) scale(0.995);
  box-shadow: 0 8px 22px rgba(88, 90, 255, 0.36);
}

.btn-download:focus-visible,
.btn-copy:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.btn-download[aria-disabled="true"] {
  filter: grayscale(0.45) brightness(0.86);
  box-shadow: none;
  cursor: default;
}

.hint {
  margin: 14px 0 0;
  font-size: 12.5px;
  color: var(--text-faint);
}

.notice {
  margin: 14px 0 0;
  padding: 11px 14px;
  font-size: 13px;
  text-align: left;
  color: #ffe6c9;
  border-radius: 13px;
  background: rgba(255, 176, 66, 0.12);
  border: 1px solid rgba(255, 176, 66, 0.32);
}

.notice-ios {
  color: #d9e4ff;
  background: rgba(80, 132, 255, 0.13);
  border-color: rgba(80, 132, 255, 0.34);
}

/* ---------- 复制地址 ---------- */
.copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
}

.btn-copy {
  padding: 10px 18px;
  font-size: 13.5px;
  font-family: inherit;
  color: #d9dcff;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease;
}

.btn-copy:hover {
  background: rgba(255, 255, 255, 0.11);
  color: #fff;
}

.copy-msg {
  font-size: 12.5px;
  color: var(--cyan);
  min-height: 1em;
}

.copy-msg.is-error { color: #ffb0a0; }

.copy-fallback {
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--text-dim);
  text-align: left;
}

.copy-input {
  width: 100%;
  margin-top: 6px;
  padding: 9px 11px;
  font-size: 12.5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--text);
  background: rgba(0, 0, 0, 0.32);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 11px;
}

/* ---------- 二维码 ---------- */
.qr-block { margin-top: 24px; }

.qr-frame {
  width: 168px;
  margin: 0 auto;
  padding: 10px;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45);
}

.qr {
  width: 100%;
  height: auto;
  image-rendering: pixelated;
}

.qr-tip {
  margin: 10px 0 0;
  font-size: 12.5px;
  color: var(--text-faint);
}

/* ---------- 文件信息 ---------- */
.file-meta {
  margin: 22px 0 0;
  padding-top: 16px;
  font-size: 12px;
  color: var(--text-faint);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  text-align: left;
}

.file-meta > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 3px 0;
}

.file-meta dt { flex: none; color: var(--text-faint); }
.file-meta dd {
  margin: 0;
  color: #c6cbe8;
  word-break: break-all;
  text-align: right;
}

.file-meta .hash { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

/* ---------- 无效链接 ---------- */
.card-invalid { padding: 38px 22px; }

.invalid-mark {
  width: 54px;
  height: 54px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 700;
  color: #ffd0c4;
  border-radius: 50%;
  background: rgba(255, 122, 92, 0.14);
  border: 1px solid rgba(255, 122, 92, 0.36);
}

.invalid-title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 600;
}

.invalid-text {
  margin: 0;
  font-size: 14px;
  color: var(--text-dim);
}

/* ---------- 功能亮点 / 安装说明 ---------- */
.block {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  text-align: left;
}

.block-title {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: #cfd6ff;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature {
  padding: 11px 12px;
  border-radius: 13px;
  background: linear-gradient(150deg, rgba(123, 92, 255, 0.16), rgba(61, 123, 255, 0.06));
  border: 1px solid rgba(123, 92, 255, 0.24);
}

.feature-name {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: #e8ebff;
}

.feature-desc {
  display: block;
  margin-top: 3px;
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--text-faint);
}

.guide-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.guide-steps li {
  position: relative;
  counter-increment: step;
  padding: 6px 0 6px 30px;
  font-size: 13px;
  color: #c6cbe8;
}

.guide-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 5px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11.5px;
  color: #dfe3ff;
  border-radius: 50%;
  background: rgba(123, 92, 255, 0.2);
  border: 1px solid rgba(123, 92, 255, 0.38);
}

.guide-help {
  margin-top: 13px;
  padding: 11px 13px;
  border-radius: 13px;
  background: rgba(80, 132, 255, 0.1);
  border: 1px solid rgba(80, 132, 255, 0.26);
}

.guide-help-title {
  margin: 0 0 6px;
  font-size: 12.5px;
  font-weight: 600;
  color: #d9e4ff;
}

.guide-help-list {
  margin: 0;
  padding-left: 17px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--text-faint);
}

.guide-help-list li { margin: 2px 0; }

/* ---------- 页脚 ---------- */
.foot {
  margin-top: 4px;
  font-size: 11.5px;
  color: rgba(178, 184, 214, 0.88);
  text-align: center;
}

@media (max-width: 360px) {
  .page { padding: 22px 14px 22px; }
  .card { padding: 24px 16px 20px; border-radius: 22px; }
  .title { font-size: 20px; }
  .btn-download { font-size: 16.5px; padding: 15px 14px; }
  .feature { padding: 10px; }
  .feature-name { font-size: 13px; }
  .feature-desc { font-size: 11px; }
}

@media (min-width: 640px) {
  .page { padding-top: 56px; padding-bottom: 56px; }
  .card { padding: 34px 28px 28px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}