/* ==========================================================================
   狙击手 v3.88 — 官网样式表
   深色交易终端视觉 · 移动优先 · 无第三方依赖
   ========================================================================== */

/* ------------------------------- 设计令牌 ------------------------------- */
:root {
  --bg:         #080a0f;
  --bg-2:       #0b0e14;
  --surface:    #11151d;
  --surface-2:  #161b25;
  --surface-3:  #1b212d;
  --border:     #242c3a;
  --border-soft:#1d2431;

  --ink:        #e8edf7;
  --ink-2:      #b6c0d0;
  --muted:      #78849a;
  --faint:      #4d5769;

  --gold:       #f0b429;
  --gold-2:     #ffd57a;
  --gold-dim:   rgba(240, 180, 41, .12);
  --cyan:       #22d3ee;
  --green:      #26d07c;
  --red:        #f6465d;

  --radius-sm:  10px;
  --radius:     14px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --shadow-sm:  0 2px 8px rgba(0,0,0,.35);
  --shadow:     0 14px 40px -12px rgba(0,0,0,.65);
  --shadow-lg:  0 40px 90px -30px rgba(0,0,0,.85);
  --glow-gold:  0 0 0 1px rgba(240,180,41,.25), 0 18px 60px -20px rgba(240,180,41,.45);

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;

  --header-h: 72px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* --------------------------------- 基础 --------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  font-feature-settings: "tnum" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }

/* hidden 属性必须始终生效：
   下面的 .btn / .mobile-nav 等规则带 display，会盖掉浏览器默认的 [hidden]{display:none}。
   用 JS 控制显隐的元素（备用下载按钮、移动端菜单、灯箱、提示条）都依赖这一条。 */
[hidden] { display: none !important; }

h1, h2, h3, h4, h5 { margin: 0; line-height: 1.22; letter-spacing: -.015em; font-weight: 700; }
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; list-style: none; }

code {
  font-family: var(--mono);
  font-size: .9em;
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 7px;
  color: var(--gold-2);
}

::selection { background: rgba(240,180,41,.28); color: #fff; }

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

/* 滚动条 */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: #2a3344;
  border-radius: 99px;
  border: 3px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: #3a465c; }

/* -------------------------------- 布局工具 -------------------------------- */
.container {
  width: 100%;
  max-width: 1220px;
  margin-inline: auto;
  padding-inline: 24px;
}
.container--narrow { max-width: 880px; }

.section { padding: clamp(72px, 8.5vw, 124px) 0; position: relative; }
.section--alt {
  background: linear-gradient(180deg, transparent, rgba(17,21,29,.55) 18%, rgba(17,21,29,.55) 82%, transparent);
  border-block: 1px solid var(--border-soft);
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--gold); color: #1a1206; padding: 10px 18px;
  border-radius: 0 0 10px 0; font-weight: 700;
}
.skip-link:focus { left: 0; }

/* ------------------------------- 背景装饰层 ------------------------------- */
.bg-layer { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }

.bg-grid {
  position: absolute; inset: -2px;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.028) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.028) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 15%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 15%, transparent 75%);
}

.bg-glow { position: absolute; border-radius: 50%; filter: blur(90px); }
.bg-glow--gold {
  width: 720px; height: 720px; top: -320px; left: 50%; transform: translateX(-58%);
  background: radial-gradient(circle, rgba(240,180,41,.18), transparent 68%);
}
.bg-glow--cyan {
  width: 640px; height: 640px; top: 46%; right: -260px;
  background: radial-gradient(circle, rgba(34,211,238,.10), transparent 70%);
}

.bg-noise {
  position: absolute; inset: 0; opacity: .32; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}

/* -------------------------------- 按钮 -------------------------------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-bd: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 24px;
  border: 1px solid var(--btn-bd);
  border-radius: 12px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .18s var(--ease), box-shadow .25s var(--ease),
              background-color .2s var(--ease), border-color .2s var(--ease), opacity .2s;
}
.btn svg { flex: none; }

.btn--primary {
  --btn-fg: #1a1206;
  background: linear-gradient(135deg, var(--gold-2), var(--gold) 55%, #d99a12);
  box-shadow: 0 10px 30px -12px rgba(240,180,41,.65), inset 0 1px 0 rgba(255,255,255,.45);
  font-weight: 700;
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 44px -14px rgba(240,180,41,.8), inset 0 1px 0 rgba(255,255,255,.5);
}
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  --btn-bd: var(--border);
  background: rgba(255,255,255,.035);
  color: var(--ink);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover {
  background: rgba(255,255,255,.07);
  border-color: #364156;
  transform: translateY(-2px);
}

.btn--lg { padding: 16px 30px; font-size: 16px; border-radius: 14px; }
.btn--sm { padding: 10px 18px; font-size: 14px; border-radius: 10px; }
.btn--tiny { padding: 6px 12px; font-size: 12.5px; border-radius: 8px; --btn-bd: var(--border); background: var(--surface-3); }
.btn--tiny:hover { background: #232b39; }
.btn--block { width: 100%; }

/* -------------------------------- 顶部导航 -------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  transition: background-color .3s var(--ease), border-color .3s var(--ease), backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(8,10,15,.82);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom-color: var(--border-soft);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: flex; align-items: center; flex: none; }
.brand img { height: 38px; width: auto; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative;
  padding: 9px 14px;
  border-radius: 9px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-2);
  transition: color .2s, background-color .2s;
}
.nav a:hover { color: var(--ink); background: rgba(255,255,255,.05); }
.nav a.is-active { color: var(--gold); }

.header-actions { display: flex; align-items: center; gap: 12px; flex: none; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: rgba(255,255,255,.04);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
}
.nav-toggle span {
  display: block; width: 18px; height: 1.8px;
  background: var(--ink); border-radius: 2px;
  transition: transform .25s var(--ease), opacity .2s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.8px) rotate(-45deg); }

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 24px 22px;
  background: rgba(8,10,15,.97);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.mobile-nav a {
  padding: 13px 12px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink-2);
}
.mobile-nav a:hover { background: rgba(255,255,255,.05); color: var(--ink); }
.mobile-nav .btn { margin-top: 12px; }

/* --------------------------------- 首屏 --------------------------------- */
.hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(48px, 7vw, 92px));
  padding-bottom: clamp(60px, 8vw, 110px);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  gap: clamp(32px, 4.5vw, 64px);
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px 7px 12px;
  border: 1px solid rgba(240,180,41,.3);
  background: var(--gold-dim);
  border-radius: 99px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-2);
  margin-bottom: 26px;
}
.badge-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(240,180,41,.18);
  animation: blink 2.4s ease-in-out infinite;
}
.badge-sep { width: 1px; height: 12px; background: rgba(240,180,41,.35); }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

.hero-title {
  font-size: clamp(34px, 5.2vw, 60px);
  letter-spacing: -.03em;
  margin-bottom: 22px;
}
.grad {
  background: linear-gradient(100deg, var(--gold-2) 0%, var(--gold) 42%, #e08b1f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.hero-sub {
  font-size: clamp(15.5px, 1.35vw, 18px);
  color: var(--ink-2);
  max-width: 33em;
  margin-bottom: 34px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }

.hero-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  padding-top: 26px;
  border-top: 1px solid var(--border-soft);
}
.hero-meta li { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.hero-meta strong {
  font-size: 15.5px; font-weight: 700; color: var(--ink);
  font-family: var(--mono); letter-spacing: -.02em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.hero-meta span { font-size: 12.5px; color: var(--muted); }

/* ---------------------------- 首屏产品窗口 ---------------------------- */
.hero-visual { position: relative; perspective: 1800px; }

.device {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: rotateY(-7deg) rotateX(2.5deg) scale(.985);
  transform-style: preserve-3d;
  transition: transform .7s var(--ease);
}
.hero-visual:hover .device { transform: rotateY(-2deg) rotateX(0deg) scale(1); }

.device-bar {
  display: flex; align-items: center; gap: 8px;
  height: 42px; padding: 0 14px;
  background: #0d1119;
  border-bottom: 1px solid var(--border);
}
.dot { width: 11px; height: 11px; border-radius: 50%; flex: none; }
.dot--r { background: #ff5f57; } .dot--y { background: #febc2e; } .dot--g { background: #28c840; }
.device-title {
  margin-left: 10px; font-size: 12.5px; color: var(--muted);
  font-family: var(--mono);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.device-status {
  margin-left: auto; display: inline-flex; align-items: center; gap: 7px;
  font-size: 12px; font-weight: 600; color: var(--green); white-space: nowrap;
}
.device-status i {
  width: 7px; height: 7px; border-radius: 50%; background: var(--green);
  box-shadow: 0 0 0 4px rgba(38,208,124,.16);
}
.device-body { background: var(--bg); }
.device-body img { width: 100%; display: block; }

/* 浮动信息卡 */
.float-card {
  position: absolute;
  display: flex; flex-direction: column; gap: 2px;
  padding: 13px 17px;
  background: rgba(20,25,35,.9);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  animation: floaty 6s ease-in-out infinite;
}
.float-card--a { left: -26px; bottom: 52px; animation-delay: -1.5s; }
.float-card--b { right: -22px; top: 68px; }

.fc-label { font-size: 11.5px; color: var(--muted); }
.fc-value {
  font-size: 19px; font-weight: 700; font-family: var(--mono);
  display: inline-flex; align-items: center; gap: 8px; letter-spacing: -.02em;
}
.fc-value.up { color: var(--green); }
.fc-sub { font-size: 11px; color: var(--faint); font-family: var(--mono); }

.pulse {
  width: 9px; height: 9px; border-radius: 50%; background: var(--green);
  box-shadow: 0 0 0 0 rgba(38,208,124,.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(38,208,124,.55); }
  70%  { box-shadow: 0 0 0 11px rgba(38,208,124,0); }
  100% { box-shadow: 0 0 0 0 rgba(38,208,124,0); }
}
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-9px); }
}

.scroll-hint {
  display: flex; justify-content: center; margin-top: clamp(40px, 5vw, 64px);
}
.scroll-hint span {
  display: block; width: 22px; height: 36px;
  border: 1.6px solid var(--border); border-radius: 99px;
  position: relative;
}
.scroll-hint span::after {
  content: ""; position: absolute; left: 50%; top: 7px;
  width: 3.5px; height: 7px; border-radius: 2px; background: var(--gold);
  transform: translateX(-50%);
  animation: scrolldot 1.9s var(--ease) infinite;
}
@keyframes scrolldot {
  0%   { opacity: 0; transform: translate(-50%, -3px); }
  35%  { opacity: 1; }
  70%  { opacity: 0; transform: translate(-50%, 12px); }
  100% { opacity: 0; }
}

/* ------------------------------- 信任条 ------------------------------- */
.trustbar { padding: 30px 0 34px; border-block: 1px solid var(--border-soft); }
.trustbar-label {
  text-align: center; font-size: 12.5px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--faint); margin-bottom: 18px;
}
.trustbar-items {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 12px 14px;
}
.trustbar-items span {
  padding: 8px 17px;
  border: 1px solid var(--border);
  border-radius: 99px;
  background: rgba(255,255,255,.025);
  font-size: 13.5px; font-weight: 500; color: var(--ink-2);
}

/* ------------------------------- 标题区 ------------------------------- */
.section-head { max-width: 720px; margin-bottom: clamp(38px, 5vw, 62px); }
.section-head--center { margin-inline: auto; text-align: center; }

.eyebrow {
  display: inline-block;
  font-size: 12.5px; font-weight: 700; letter-spacing: .18em;
  text-transform: uppercase; color: var(--gold);
  margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px, 3.4vw, 40px); margin-bottom: 16px; }
.section-head p { font-size: clamp(15px, 1.2vw, 17px); color: var(--muted); }

/* ------------------------------- 功能网格 ------------------------------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.feature {
  position: relative;
  padding: 30px 28px 32px;
  background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.012));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .3s var(--ease), border-color .3s, background-color .3s;
}
.feature::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(420px 180px at 20% 0%, rgba(240,180,41,.11), transparent 70%);
  opacity: 0; transition: opacity .35s;
}
.feature:hover { transform: translateY(-4px); border-color: #33405a; }
.feature:hover::before { opacity: 1; }

.feature-icon {
  position: relative;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 13px;
  background: var(--gold-dim);
  border: 1px solid rgba(240,180,41,.24);
  color: var(--gold);
  margin-bottom: 20px;
}
.feature-icon svg { width: 24px; height: 24px; }
.feature h3 { position: relative; font-size: 17.5px; margin-bottom: 10px; }
.feature p { position: relative; font-size: 14.5px; color: var(--muted); line-height: 1.7; }

/* ------------------------------- 界面预览 ------------------------------- */
.showcase {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.shot--wide { grid-column: 1 / -1; }

.shot { cursor: zoom-in; }
.shot-frame {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-2);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .35s var(--ease), border-color .3s, box-shadow .35s;
}
.shot:hover .shot-frame,
.shot:focus-visible .shot-frame {
  transform: translateY(-4px);
  border-color: #3a4763;
  box-shadow: 0 30px 70px -28px rgba(0,0,0,.9);
}
.shot-frame img { width: 100%; display: block; }

.shot-zoom {
  position: absolute; right: 14px; bottom: 14px;
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: rgba(8,10,15,.78);
  border: 1px solid var(--border);
  color: var(--ink-2);
  backdrop-filter: blur(8px);
  opacity: 0; transform: translateY(6px);
  transition: opacity .28s, transform .28s;
}
.shot:hover .shot-zoom { opacity: 1; transform: translateY(0); }

.shot-caption { padding: 18px 4px 0; }
.shot-caption h3 { font-size: 16.5px; margin-bottom: 6px; }
.shot-caption p { font-size: 14px; color: var(--muted); }

.showcase-note {
  margin-top: 30px; text-align: center;
  font-size: 12.5px; color: var(--faint);
}

/* ------------------------------- 数据条 ------------------------------- */
.stats-band {
  padding: clamp(48px, 6vw, 76px) 0;
  border-block: 1px solid var(--border-soft);
  background:
    radial-gradient(700px 240px at 50% 0%, rgba(240,180,41,.07), transparent 70%),
    var(--bg-2);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
.stat { display: flex; flex-direction: column; gap: 8px; padding-left: 20px; border-left: 2px solid var(--border); }
.stat:first-child { border-left-color: var(--gold); }
.stat-num {
  font-family: var(--mono);
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 700; letter-spacing: -.03em;
  background: linear-gradient(120deg, #fff, var(--gold-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-label { font-size: 13.5px; color: var(--muted); line-height: 1.6; }

/* ------------------------------- 下载中心 ------------------------------- */
.download-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
  gap: 24px;
  align-items: start;
}

.dl-card {
  position: relative;
  padding: clamp(26px, 3vw, 38px);
  border: 1px solid rgba(240,180,41,.3);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(240,180,41,.07), rgba(17,21,29,.9) 42%);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.dl-card-glow {
  position: absolute; top: -140px; right: -100px;
  width: 380px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(240,180,41,.22), transparent 68%);
  filter: blur(50px); pointer-events: none;
}

.dl-head { position: relative; display: flex; align-items: center; gap: 18px; margin-bottom: 28px; }
.dl-mark {
  width: 56px; height: 56px; flex: none;
  display: grid; place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--gold-2), var(--gold));
  color: #1a1206;
  box-shadow: 0 10px 26px -10px rgba(240,180,41,.7);
}
.dl-title { min-width: 0; }
.dl-title h3 { font-size: clamp(20px, 2.2vw, 25px); margin-bottom: 5px; }
.dl-title p { font-size: 13.5px; color: var(--muted); }
.dl-badge {
  margin-left: auto; flex: none;
  padding: 6px 13px; border-radius: 99px;
  background: rgba(38,208,124,.14);
  border: 1px solid rgba(38,208,124,.32);
  color: var(--green);
  font-size: 12px; font-weight: 700;
}

.dl-actions { position: relative; display: flex; flex-direction: column; gap: 12px; margin-bottom: 30px; }

.dl-meta {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}
.dl-meta dt { font-size: 12px; color: var(--muted); margin-bottom: 5px; }
.dl-meta dd { font-size: 14.5px; font-weight: 700; font-family: var(--mono); letter-spacing: -.02em; }

.dl-hash { position: relative; margin-top: 20px; }
.dl-hash summary {
  cursor: pointer; font-size: 13.5px; font-weight: 600; color: var(--ink-2);
  list-style: none; display: flex; align-items: center; gap: 8px;
}
.dl-hash summary::-webkit-details-marker { display: none; }
.dl-hash summary::before {
  content: "▸"; color: var(--gold); font-size: 11px;
  transition: transform .22s var(--ease);
}
.dl-hash[open] summary::before { transform: rotate(90deg); }
.hash-row {
  display: flex; align-items: center; gap: 10px;
  margin-top: 13px; padding: 11px 13px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.hash-row code {
  flex: 1; min-width: 0;
  background: none; border: 0; padding: 0;
  font-size: 12px; color: var(--ink-2);
  overflow-wrap: anywhere; line-height: 1.55;
}
.hash-tip { margin-top: 10px; font-size: 12px; color: var(--faint); }

.dl-side { display: flex; flex-direction: column; gap: 18px; }
.side-card {
  padding: 24px 24px 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.side-card h4 { font-size: 15.5px; margin-bottom: 16px; }
.side-card--note {
  background: linear-gradient(180deg, rgba(34,211,238,.05), rgba(17,21,29,.6));
  border-color: rgba(34,211,238,.22);
}
.side-card--note h4 { color: var(--cyan); }
.side-card--note p { font-size: 13.5px; color: var(--ink-2); line-height: 1.75; }

.check-list { display: flex; flex-direction: column; gap: 11px; }
.check-list li {
  position: relative; padding-left: 26px;
  font-size: 14px; color: var(--ink-2); line-height: 1.6;
}
.check-list li::before {
  content: ""; position: absolute; left: 0; top: .42em;
  width: 14px; height: 8px;
  border-left: 2px solid var(--green);
  border-bottom: 2px solid var(--green);
  transform: rotate(-45deg) scale(.85);
  transform-origin: left center;
}
.check-list--gold li::before { border-color: var(--gold); }

/* ------------------------------- 快速上手 ------------------------------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 30px 24px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: transform .3s var(--ease), border-color .3s;
}
.step:hover { transform: translateY(-4px); border-color: #33405a; }
.step::after {
  content: ""; position: absolute; top: 50px; right: -22px;
  width: 22px; height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}
.step:last-child::after { display: none; }

.step-num {
  display: block;
  font-family: var(--mono);
  font-size: 13px; font-weight: 700; letter-spacing: .1em;
  color: var(--gold);
  margin-bottom: 16px;
}
.step h3 { font-size: 16.5px; margin-bottom: 10px; }
.step p { font-size: 14px; color: var(--muted); line-height: 1.72; }
.step code { font-size: 12.5px; }

/* ------------------------------- 常见问题 ------------------------------- */
.faq { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: border-color .25s, background-color .25s;
}
.faq-item[open] { border-color: rgba(240,180,41,.32); background: var(--surface-2); }

.faq-item summary {
  display: flex; align-items: center; gap: 14px;
  padding: 19px 22px;
  cursor: pointer; list-style: none;
  font-size: 15.5px; font-weight: 600;
  transition: color .2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: ""; margin-left: auto; flex: none;
  width: 9px; height: 9px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg) translateY(-2px);
  transition: transform .28s var(--ease), border-color .2s;
}
.faq-item[open] summary::after { transform: rotate(-135deg) translateY(-3px); border-color: var(--gold); }
.faq-item[open] summary { color: var(--gold-2); }

.faq-body { padding: 0 22px 21px; }
.faq-body p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }
.faq-body strong { color: var(--ink); }

/* ------------------------------- 结尾 CTA ------------------------------- */
.cta-final { padding: clamp(60px, 8vw, 104px) 0; }
.cta-box {
  position: relative;
  padding: clamp(44px, 6vw, 76px) clamp(24px, 5vw, 64px);
  text-align: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(240,180,41,.13), transparent 68%),
    linear-gradient(180deg, var(--surface-2), var(--surface));
  overflow: hidden;
}
.cta-glow {
  position: absolute; left: 50%; top: -180px; transform: translateX(-50%);
  width: 620px; height: 380px; border-radius: 50%;
  background: radial-gradient(circle, rgba(240,180,41,.2), transparent 70%);
  filter: blur(60px); pointer-events: none;
}
.cta-box h2 { position: relative; font-size: clamp(26px, 3.4vw, 40px); margin-bottom: 14px; }
.cta-box > p { position: relative; font-size: clamp(15px, 1.2vw, 17px); color: var(--muted); margin-bottom: 32px; }
.cta-actions { position: relative; display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.cta-fine { position: relative; margin-top: 22px !important; font-size: 13px !important; color: var(--faint) !important; }

/* -------------------------------- 页脚 -------------------------------- */
.site-footer {
  border-top: 1px solid var(--border-soft);
  background: var(--bg-2);
  padding-top: clamp(48px, 6vw, 74px);
}
.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 48px;
  padding-bottom: 46px;
}
.footer-brand img { height: 40px; width: auto; margin-bottom: 18px; }
.footer-brand > p { font-size: 14px; color: var(--muted); max-width: 30em; }
.footer-contact { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.footer-contact a, .footer-contact span {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 99px;
  font-size: 12.5px; color: var(--ink-2);
  font-family: var(--mono);
  transition: border-color .2s, color .2s;
}
.footer-contact a:hover { border-color: var(--gold); color: var(--gold-2); }

.footer-nav { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.footer-nav h5 {
  font-size: 12.5px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--faint); margin-bottom: 16px;
}
.footer-nav a {
  display: block; padding: 6px 0;
  font-size: 14px; color: var(--ink-2);
  transition: color .2s, transform .2s;
}
.footer-nav a:hover { color: var(--gold-2); transform: translateX(3px); }

.footer-bottom {
  padding: 26px 24px 34px;
  border-top: 1px solid var(--border-soft);
}
.risk {
  font-size: 12.5px; color: var(--faint); line-height: 1.85;
  max-width: 92ch; margin-bottom: 16px;
}
.risk strong { color: var(--muted); }
.copy { font-size: 12.5px; color: var(--faint); }

/* ------------------------------ 图片放大层 ------------------------------ */
.lightbox {
  position: fixed; inset: 0; z-index: 300;
  display: grid; place-items: center;
  padding: clamp(16px, 4vw, 56px);
  background: rgba(4,5,8,.9);
  backdrop-filter: blur(12px);
  animation: fadeIn .25s var(--ease);
}
.lightbox[hidden] { display: none; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.lb-figure { margin: 0; max-width: 1400px; width: 100%; }
.lb-figure img {
  width: 100%; border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  animation: zoomIn .3s var(--ease);
}
@keyframes zoomIn { from { transform: scale(.96); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.lb-figure figcaption {
  margin-top: 16px; text-align: center;
  font-size: 13.5px; color: var(--muted);
}

.lb-close {
  position: absolute; top: clamp(14px, 3vw, 26px); right: clamp(14px, 3vw, 26px);
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background-color .2s, transform .2s;
}
.lb-close:hover { background: rgba(255,255,255,.12); transform: rotate(90deg); }

/* -------------------------------- 轻提示 -------------------------------- */
.toast {
  position: fixed;
  left: 50%; bottom: 32px;
  transform: translate(-50%, 20px);
  z-index: 400;
  padding: 13px 22px;
  border-radius: 12px;
  background: rgba(22,27,37,.96);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  font-size: 14px; font-weight: 500;
  backdrop-filter: blur(12px);
  opacity: 0;
  transition: opacity .28s var(--ease), transform .28s var(--ease);
  max-width: calc(100vw - 40px);
  text-align: center;
}
.toast[hidden] { display: none; }
.toast.is-open { opacity: 1; transform: translate(-50%, 0); }
.toast.is-warn { border-color: rgba(240,180,41,.45); }
.toast.is-error { border-color: rgba(246,70,93,.5); }
.toast.is-ok { border-color: rgba(38,208,124,.45); }

/* ------------------------------ 滚动入场动画 ------------------------------
   注意：初始的隐藏状态只在 <html class="js"> 时才生效（由 index.html 头部的
   内联脚本添加）。这样即使 JS 禁用或加载失败，内容也不会白屏。            */
.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  will-change: opacity, transform;
}
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ==========================================================================
   购买页（buy.html）
   ========================================================================== */

/* ---------------------------- 演示模式横幅 ---------------------------- */
.demo-banner {
  margin-top: calc(var(--header-h) + 0px);
  background: linear-gradient(90deg, rgba(246,70,93,.16), rgba(240,180,41,.12));
  border-bottom: 1px solid rgba(246,70,93,.35);
}
.demo-banner-inner {
  display: flex; align-items: flex-start; gap: 14px;
  padding-top: 14px; padding-bottom: 14px;
}
.demo-tag {
  flex: none; margin-top: 1px;
  padding: 4px 11px; border-radius: 99px;
  background: var(--red); color: #fff;
  font-size: 12px; font-weight: 700; letter-spacing: .04em;
}
.demo-banner-inner p { font-size: 13.5px; color: var(--ink-2); line-height: 1.65; }
.demo-banner-inner strong { color: var(--ink); }
.demo-banner-inner code {
  background: rgba(0,0,0,.3); border-color: rgba(255,255,255,.14);
  color: var(--gold-2); font-size: 12px;
}

/* -------------------------------- 面包屑 -------------------------------- */
.crumbs {
  display: flex; align-items: center; gap: 9px;
  font-size: 13px; color: var(--faint);
  margin-bottom: 26px;
}
.crumbs a { color: var(--muted); transition: color .2s; }
.crumbs a:hover { color: var(--gold-2); }
.crumb-current { color: var(--ink-2); }

/* ------------------------------ 购买首屏 ------------------------------ */
.buy-hero {
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(28px, 4vw, 48px);
}
.buy-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 36px;
  align-items: center;
}
.buy-hero h1 { font-size: clamp(30px, 4.2vw, 48px); margin-bottom: 16px; }
.buy-hero-sub { font-size: clamp(15px, 1.3vw, 17px); color: var(--ink-2); margin-bottom: 30px; }
.buy-hero-meta { max-width: 560px; }

/* 价格卡 */
.price-chip {
  position: relative;
  flex: none;
  min-width: 250px;
  padding: 26px 30px 24px;
  border: 1px solid rgba(240,180,41,.32);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(240,180,41,.09), rgba(17,21,29,.92) 55%);
  box-shadow: var(--shadow-lg);
  text-align: center;
}
.price-badge {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  padding: 4px 13px; border-radius: 99px;
  background: linear-gradient(135deg, var(--gold-2), var(--gold));
  color: #1a1206; font-size: 11.5px; font-weight: 700; white-space: nowrap;
  box-shadow: 0 6px 16px -6px rgba(240,180,41,.7);
}
.price-badge:empty { display: none; }
.price-label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 8px; }
.price-value { display: flex; align-items: baseline; justify-content: center; gap: 7px; }
.price-num {
  font-family: var(--mono);
  font-size: clamp(38px, 4.6vw, 52px);
  font-weight: 700; letter-spacing: -.035em; line-height: 1;
  background: linear-gradient(120deg, #fff, var(--gold-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.price-cur { font-size: 16px; font-weight: 700; color: var(--gold); }
.price-unit { font-size: 13.5px; font-weight: 600; color: var(--muted); margin-left: 2px; }
.price-note { display: block; margin-top: 12px; font-size: 12px; color: var(--faint); }

/* ------------------------------ 支付两栏 ------------------------------ */
.buy-section { padding-top: clamp(24px, 3vw, 40px); }
.buy-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  gap: 24px;
  align-items: start;
}

/* 收款卡 */
.pay-card {
  position: relative;
  padding: clamp(24px, 2.8vw, 34px);
  border: 1px solid rgba(240,180,41,.28);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(240,180,41,.06), rgba(17,21,29,.9) 40%);
  box-shadow: var(--shadow-lg);
}
.pay-card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.pay-card-head h2 { font-size: clamp(19px, 2vw, 23px); }
.step-pill {
  flex: none;
  padding: 4px 11px; border-radius: 99px;
  background: var(--gold-dim); border: 1px solid rgba(240,180,41,.3);
  color: var(--gold-2); font-size: 11.5px; font-weight: 700;
}

/* 网络警告 */
.net-warn {
  display: flex; gap: 13px;
  padding: 15px 17px; margin-bottom: 22px;
  border: 1px solid rgba(246,70,93,.35);
  border-radius: var(--radius);
  background: rgba(246,70,93,.09);
  color: var(--red);
}
.net-warn svg { flex: none; margin-top: 2px; }
.net-warn strong { display: block; font-size: 14px; color: #ff8a9b; margin-bottom: 5px; }
.net-warn p { font-size: 13px; color: var(--ink-2); line-height: 1.65; }

/* 网络 / 金额 */
.pay-meta {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px; margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border-soft);
}
.pay-meta dt { font-size: 12px; color: var(--muted); margin-bottom: 7px; }
.pay-meta dd { font-size: 15px; font-weight: 700; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.net-name { font-family: var(--mono); font-size: 14px !important; color: var(--cyan); }
.amount { font-family: var(--mono); color: var(--gold-2); }

/* 地址 */
.addr-block { margin-bottom: 22px; }
.addr-label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 9px; }
.addr-row { display: flex; gap: 10px; align-items: stretch; }
.addr-text {
  flex: 1; min-width: 0;
  display: flex; align-items: center;
  padding: 13px 15px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px; letter-spacing: .01em;
  color: var(--gold-2);
  overflow-wrap: anywhere; line-height: 1.5;
}
.addr-row .btn { flex: none; }

/* 二维码 */
.qr-block { text-align: center; margin-bottom: 20px; }
.qr-block img {
  width: 100%; max-width: 232px; height: auto;
  margin: 0 auto;
  padding: 12px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.qr-tip { margin-top: 12px; font-size: 12.5px; color: var(--muted); }

.pay-foot {
  display: flex; align-items: flex-start; gap: 9px;
  padding-top: 18px;
  border-top: 1px solid var(--border-soft);
  font-size: 12.5px; color: var(--faint); line-height: 1.6;
}
.pay-foot svg { flex: none; margin-top: 2px; color: var(--gold); }

/* 右栏 */
.buy-side { display: flex; flex-direction: column; gap: 20px; }
.side-block {
  padding: 26px 26px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.side-block h3 { font-size: 17px; margin-bottom: 18px; }

/* 四步流程 */
.buy-steps { display: flex; flex-direction: column; gap: 20px; }
.buy-steps li { display: flex; gap: 14px; }
.bs-num {
  flex: none;
  width: 27px; height: 27px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--gold-dim); border: 1px solid rgba(240,180,41,.32);
  color: var(--gold-2); font-size: 12.5px; font-weight: 700;
  font-family: var(--mono);
}
.buy-steps strong { display: block; font-size: 14.5px; margin-bottom: 5px; }
.buy-steps p { font-size: 13.5px; color: var(--muted); line-height: 1.68; }

/* 订单表单 */
.order-block { border-color: rgba(240,180,41,.26); background: var(--surface-2); }
.order-block h3 { margin-top: 12px; }
.order-hint { font-size: 13.5px; color: var(--muted); line-height: 1.7; margin-bottom: 20px; }

.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-2); margin-bottom: 8px; }
.field .req { color: var(--red); margin-left: 2px; }
.field input, .field textarea {
  width: 100%;
  padding: 13px 15px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
  transition: border-color .2s, box-shadow .2s;
}
.field textarea { resize: vertical; min-height: 62px; }
.field input::placeholder, .field textarea::placeholder { color: var(--faint); }
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(240,180,41,.14);
}
.field input.has-error, .field textarea.has-error {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(246,70,93,.13);
}
.field-tip { margin-top: 7px; font-size: 12px; color: var(--faint); }
.field-tip.is-error { color: var(--red); }

.order-foot {
  margin-top: 16px;
  display: flex; flex-direction: column; gap: 5px;
  font-size: 12.5px; color: var(--faint); line-height: 1.65;
}
.order-foot a { color: var(--gold-2); text-decoration: underline; text-underline-offset: 2px; }

/* 提交成功态 */
.order-done { text-align: center; }
.done-icon {
  width: 62px; height: 62px; margin: 0 auto 18px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(38,208,124,.12);
  border: 1px solid rgba(38,208,124,.34);
  color: var(--green);
}
.order-done h4 { font-size: 18px; margin-bottom: 12px; }
.done-note { font-size: 13.5px; color: var(--ink-2); line-height: 1.75; margin-bottom: 20px; }
.done-note code { font-size: 12px; }
.done-summary {
  text-align: left;
  padding: 18px 20px; margin-bottom: 20px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.ds-row { display: flex; gap: 14px; padding: 7px 0; font-size: 13px; }
.ds-row + .ds-row { border-top: 1px solid var(--border-soft); }
.ds-row > span { flex: none; width: 72px; color: var(--muted); }
.ds-row > strong { flex: 1; min-width: 0; overflow-wrap: anywhere; font-weight: 600; color: var(--ink-2); }
.ds-txid { font-family: var(--mono); font-size: 12px; color: var(--gold-2); }
.done-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------------------- 拿到卡密 ---------------------- */
.card-done { text-align: center; }
.card-demo {
  margin: -4px 0 18px;
  padding: 10px 14px;
  border: 1px solid rgba(240,180,41,.32);
  border-radius: var(--radius-sm);
  background: var(--gold-dim);
  color: var(--gold-2);
  font-size: 12.5px; line-height: 1.65; text-align: left;
}
.card-demo b { color: #ffe0a3; }

.card-key-box {
  padding: 20px 18px 18px;
  margin-bottom: 18px;
  border: 1px solid rgba(38,208,124,.4);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(38,208,124,.09), rgba(8,10,15,.5));
}
.ck-label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 10px; }
.ck-value {
  display: block;
  padding: 14px 12px;
  margin-bottom: 14px;
  background: var(--bg-2);
  border: 1px dashed rgba(38,208,124,.42);
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: clamp(15px, 1.7vw, 19px);
  font-weight: 700;
  letter-spacing: .06em;
  color: #7bf0b4;
  overflow-wrap: anywhere;
  line-height: 1.45;
  user-select: all;
}

.card-meta {
  text-align: left;
  padding: 16px 18px;
  margin-bottom: 16px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.cm-row { display: flex; gap: 14px; padding: 6px 0; font-size: 13px; }
.cm-row + .cm-row { border-top: 1px solid var(--border-soft); }
.cm-row > span { flex: none; width: 72px; color: var(--muted); }
.cm-row > strong { flex: 1; min-width: 0; overflow-wrap: anywhere; font-weight: 600; color: var(--ink-2); }
.cm-days { color: var(--green) !important; }

.card-tip {
  padding: 13px 16px;
  margin-bottom: 20px;
  border-radius: var(--radius-sm);
  background: rgba(240,180,41,.08);
  border: 1px solid rgba(240,180,41,.22);
  font-size: 12.5px; line-height: 1.7; color: var(--ink-2); text-align: left;
}
.card-tip b { color: var(--gold-2); }

/* ---------------------- 校验未通过 ---------------------- */
.card-fail { text-align: center; }
.fail-icon {
  width: 58px; height: 58px; margin: 0 auto 16px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(246,70,93,.12);
  border: 1px solid rgba(246,70,93,.34);
  color: var(--red);
}
.card-fail h4 { font-size: 17px; margin-bottom: 12px; }
.fail-msg {
  padding: 12px 15px; margin-bottom: 12px;
  border-radius: var(--radius-sm);
  background: rgba(246,70,93,.09);
  border: 1px solid rgba(246,70,93,.26);
  font-size: 13.5px; line-height: 1.7; color: #ff9aa9;
}
.fail-hint { font-size: 13px; color: var(--muted); line-height: 1.7; margin-bottom: 18px; }

/* ---------------------- 首页「购买授权」引导区块 ---------------------- */
.buy-teaser {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
  padding: clamp(28px, 3.4vw, 46px);
  border: 1px solid rgba(240,180,41,.26);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(620px 260px at 12% 0%, rgba(240,180,41,.11), transparent 70%),
    linear-gradient(180deg, var(--surface-2), var(--surface));
  box-shadow: var(--shadow-lg);
}
.buy-teaser-copy h2 { font-size: clamp(22px, 2.8vw, 32px); margin-bottom: 14px; }
.buy-teaser-copy > p { font-size: 15px; color: var(--muted); line-height: 1.75; margin-bottom: 22px; }
.buy-teaser-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 22px; }

.buy-teaser-price {
  padding: 26px 24px 22px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: rgba(8,10,15,.5);
}
.btp-label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 10px; }
.btp-value { display: flex; align-items: baseline; justify-content: center; gap: 6px; }
.btp-num {
  font-family: var(--mono);
  font-size: 40px; font-weight: 700; letter-spacing: -.035em; line-height: 1;
  background: linear-gradient(120deg, #fff, var(--gold-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.btp-cur { font-size: 15px; font-weight: 700; color: var(--gold); }
.btp-unit { font-size: 12.5px; font-weight: 600; color: var(--muted); margin-left: 2px; }
.btp-net { display: block; margin: 10px 0 20px; font-size: 12px; color: var(--faint); font-family: var(--mono); }
.btp-note { display: block; margin-top: 13px; font-size: 11.5px; color: var(--faint); line-height: 1.6; }

/* -------------------- 购买页响应式 -------------------- */
@media (max-width: 1080px) {
  .buy-hero-inner { grid-template-columns: 1fr; gap: 28px; }
  .price-chip { min-width: 0; width: 100%; max-width: 420px; }
  .buy-grid { grid-template-columns: 1fr; }
  .buy-teaser { grid-template-columns: 1fr; gap: 30px; }
  .buy-teaser-price { max-width: 420px; }
}

@media (max-width: 620px) {
  .demo-banner { margin-top: var(--header-h); }
  .demo-banner-inner { flex-direction: column; gap: 9px; }
  .pay-meta { grid-template-columns: 1fr; gap: 14px; }
  .addr-row { flex-direction: column; }
  .addr-row .btn { width: 100%; }
  .qr-block img { max-width: 200px; }
  .ds-row { flex-direction: column; gap: 3px; }
  .ds-row > span { width: auto; font-size: 12px; }
  .done-actions .btn { width: 100%; }
  .buy-teaser-list { grid-template-columns: 1fr; }
  .buy-teaser-price { max-width: none; }
}

/* ==========================================================================
   订单金额区（唯一金额 —— 防交易哈希抢注）
   ========================================================================== */
.order-box { margin-bottom: 22px; }

.order-loading {
  display: flex; align-items: center; gap: 11px;
  padding: 22px 20px;
  border: 1px dashed var(--border); border-radius: var(--radius-lg);
  background: rgba(255,255,255,.015);
  color: var(--muted); font-size: 13.5px;
}
.spin {
  width: 15px; height: 15px; flex: none;
  border: 2px solid var(--border);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.order-body {
  padding: 20px 22px 18px;
  border: 1px solid rgba(240,180,41,.3);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(240,180,41,.09), rgba(240,180,41,.02));
}
.oa-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 10px;
}
.oa-label { font-size: 12.5px; color: var(--muted); }
.oa-badge {
  padding: 3px 10px; border-radius: 99px;
  background: var(--gold-dim); border: 1px solid rgba(240,180,41,.32);
  color: var(--gold-2); font-size: 11px; font-weight: 700;
}

.oa-value {
  display: flex; align-items: baseline; gap: 8px;
  margin-bottom: 14px; flex-wrap: wrap;
}
.oa-num {
  font-family: var(--mono); font-size: clamp(26px, 5vw, 36px);
  font-weight: 700; letter-spacing: -.02em;
  color: var(--gold-2); line-height: 1.1;
  overflow-wrap: anywhere;
}
.oa-cur { font-size: 15px; font-weight: 700; color: var(--gold); }

.oa-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }

.oa-hint {
  font-size: 12.5px; line-height: 1.75; color: var(--muted);
  padding-top: 13px; border-top: 1px solid rgba(240,180,41,.16);
}
.oa-hint strong { color: var(--gold-2); }

/* ------------------- 手续费说明（买家最容易出错的地方） ------------------- */
.pay-guide {
  margin: 4px 0 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(0,0,0,.22);
  overflow: hidden;
}
.pg-head {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 15px;
  background: rgba(240,180,41,.1);
  border-bottom: 1px solid rgba(240,180,41,.2);
  color: var(--gold-2); font-size: 13px;
}
.pg-item {
  display: flex; gap: 11px;
  padding: 13px 15px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 12.5px; line-height: 1.75; color: var(--muted);
}
.pg-item:last-of-type { border-bottom: 0; }
.pg-item strong { display: block; color: var(--ink-2); font-size: 13px; margin-bottom: 5px; }
.pg-item p { margin-bottom: 5px; }
.pg-item p:last-child { margin-bottom: 0; }
.pg-tag {
  flex: none; height: 20px; padding: 0 8px;
  display: inline-flex; align-items: center;
  border-radius: 99px; font-size: 10.5px; font-weight: 700;
}
.pg-ok .pg-tag { background: rgba(38,208,124,.16); color: var(--green); }
.pg-warn .pg-tag { background: rgba(240,180,41,.16); color: var(--gold-2); }
.pg-ok { background: rgba(38,208,124,.035); }
.pg-warn { background: rgba(240,180,41,.045); }
.pg-item code {
  background: rgba(255,255,255,.07); border: 0;
  padding: 1px 6px; font-size: 11.5px; color: var(--gold-2);
}
.pg-item b { color: var(--ink-2); }
.pg-fix { padding-left: 10px; border-left: 2px solid rgba(240,180,41,.35); }
.pg-key { color: var(--gold-2); }
.pg-key code { background: rgba(240,180,41,.14); font-size: 12px; }
.pg-ok-text { color: var(--green) !important; }

/* 被扣手续费已放行的提示 */
.card-fee {
  margin: 0 0 16px; padding: 12px 15px;
  border: 1px solid rgba(34,211,238,.28);
  background: rgba(34,211,238,.07);
  border-radius: var(--radius-sm);
  font-size: 12.5px; line-height: 1.7; color: var(--ink-2); text-align: left;
}
.card-fee b { color: var(--cyan); }
.pg-foot {
  padding: 12px 15px;
  background: rgba(34,211,238,.06);
  border-top: 1px solid rgba(34,211,238,.2);
  font-size: 12.5px; line-height: 1.75; color: var(--ink-2);
}
.pg-foot b { color: var(--cyan); }

.oa-meta {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  margin-top: 13px; padding-top: 13px;
  border-top: 1px solid rgba(240,180,41,.16);
  font-size: 12px; color: var(--faint);
}
.oa-meta code {
  background: rgba(255,255,255,.05); border: 0;
  padding: 2px 7px; font-size: 11.5px; color: var(--ink-2);
}
.oa-timer strong { color: var(--gold-2); font-family: var(--mono); }
.oa-meta .btn { margin-left: auto; }

.oa-expired {
  margin-top: 13px; padding: 12px 15px;
  border: 1px solid rgba(246,70,93,.32);
  background: rgba(246,70,93,.08);
  border-radius: var(--radius-sm);
  font-size: 12.5px; line-height: 1.7; color: #ff9fae;
}

.order-error {
  padding: 20px 22px;
  border: 1px solid rgba(246,70,93,.32);
  background: rgba(246,70,93,.07);
  border-radius: var(--radius-lg);
}
.order-error p { font-size: 13px; line-height: 1.7; color: #ff9fae; margin-bottom: 14px; }

.amount-note { font-size: 11.5px; color: var(--faint); margin-left: 6px; }

/* ==========================================================================
   视频教程区块（#video）
   ========================================================================== */
.side-card-link {
  display: inline-flex; align-items: center; gap: 7px;
  margin-top: 12px; padding-top: 12px;
  border-top: 1px solid var(--border-soft);
  width: 100%;
  font-size: 13px; font-weight: 600; color: var(--gold-2);
  transition: color .2s, gap .2s;
}
.side-card-link:hover { color: var(--gold); gap: 10px; }
.side-card-link svg { flex: none; }
.video-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 26px;
  align-items: start;
}
.video-main { min-width: 0; }

/* ------------------------------ 顶部信息条 ------------------------------ */
.video-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 14px; flex-wrap: wrap; margin-bottom: 12px;
}
.video-label { font-size: 14px; font-weight: 600; color: var(--ink-2); }
.video-facts { font-size: 12.5px; color: var(--faint); font-variant-numeric: tabular-nums; }

/* ------------------------------ 播放器外框 ------------------------------ */
.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #05070b;
  box-shadow: var(--shadow-lg);
}
.video-frame iframe,
.video-frame video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  border: 0; display: block; background: #000;
}

/* ------------------------------ 占位（还没录视频） ------------------------------ */
.video-placeholder {
  position: absolute; inset: 0;
  background: url('../img/video-poster.svg') center / cover no-repeat, #05070b;
  display: grid; place-items: center;
}
.vp-inner {
  display: flex; flex-direction: column; align-items: center; gap: 9px;
  padding: 24px 34px; text-align: center;
  border-radius: var(--radius-lg);
  background: rgba(8,10,15,.86);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--gold-2);
}
.vp-inner strong { font-size: 17px; color: var(--ink); }
.vp-inner span { font-size: 12.5px; color: var(--muted); }

/* ------------------------------ 封面 + 播放按钮 ------------------------------ */
.video-poster {
  position: absolute; inset: 0;
  display: block; width: 100%; height: 100%;
  padding: 0; border: 0; margin: 0;
  background: #05070b; cursor: pointer;
  overflow: hidden;
}
.video-poster img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
  transition: transform .5s var(--ease), filter .3s;
}
.video-poster:hover img { transform: scale(1.035); filter: brightness(1.08); }
.video-poster:focus-visible { outline: 2px solid var(--gold); outline-offset: -3px; }

.vp-play {
  position: absolute; top: 50%; left: 50%;
  width: 78px; height: 78px; margin: -39px 0 0 -39px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(160deg, var(--gold-2), #e8a317);
  color: #0b0e15;
  box-shadow: 0 10px 34px rgba(240,180,41,.4), 0 0 0 0 rgba(240,180,41,.5);
  transition: transform .3s var(--ease), box-shadow .3s;
  animation: vpPulse 2.4s ease-out infinite;
}
.video-poster:hover .vp-play { transform: scale(1.09); }
@keyframes vpPulse {
  0%   { box-shadow: 0 10px 34px rgba(240,180,41,.4), 0 0 0 0 rgba(240,180,41,.45); }
  70%  { box-shadow: 0 10px 34px rgba(240,180,41,.4), 0 0 0 22px rgba(240,180,41,0); }
  100% { box-shadow: 0 10px 34px rgba(240,180,41,.4), 0 0 0 0 rgba(240,180,41,0); }
}
.vp-caption {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  padding: 7px 18px; border-radius: 99px;
  background: rgba(8,10,15,.72);
  border: 1px solid var(--border);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  font-size: 12.5px; font-weight: 600; color: var(--ink-2);
  white-space: nowrap;
}

/* ------------------------------ 播放器下方提示 ------------------------------ */
.video-tip {
  margin-top: 14px; font-size: 13px; line-height: 1.75; color: var(--muted);
}
.video-tip a { color: var(--gold-2); border-bottom: 1px solid rgba(240,180,41,.3); }
.video-tip a:hover { color: var(--gold); border-bottom-color: var(--gold); }

/* ------------------------------ 右侧：章节目录 ------------------------------ */
.video-side { display: flex; flex-direction: column; gap: 20px; }

.vs-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 10px; margin-bottom: 14px;
}
.vs-head h3 { margin-bottom: 0; }
.vs-count {
  font-size: 11.5px; color: var(--faint);
  padding: 3px 9px; border-radius: 99px;
  background: rgba(255,255,255,.05);
}

.chapters { list-style: none; margin: 0; padding: 0; }
.chapters li + li { margin-top: 2px; }
.chapter {
  display: flex; align-items: flex-start; gap: 11px;
  width: 100%; padding: 10px 12px;
  background: none; border: 0; border-radius: var(--radius-sm);
  text-align: left; cursor: pointer;
  transition: background-color .18s, color .18s;
  font-family: inherit;
}
.chapter:hover { background: rgba(240,180,41,.08); }
.chapter:focus-visible { outline: 2px solid var(--gold); outline-offset: -2px; }

.ch-time {
  flex: none; min-width: 44px;
  font-family: var(--mono); font-size: 12px;
  color: var(--gold-2); padding-top: 1px;
}
.ch-title { flex: 1; font-size: 13px; line-height: 1.6; color: var(--ink-2); }
.chapter:hover .ch-title { color: var(--ink); }

/* 还没放视频时，章节只是「预告」——不可点，弱化显示 */
.chapters.is-preview .chapter { cursor: default; opacity: .72; }
.chapters.is-preview .chapter:hover { background: none; }
.chapters.is-preview .chapter:hover .ch-title { color: var(--ink-2); }
.chapters.is-preview .chapter::after {
  content: '待更新';
  flex: none; align-self: center;
  font-size: 10.5px; color: var(--faint);
  padding: 2px 7px; border-radius: 99px;
  background: rgba(255,255,255,.05);
}

/* 「在 B 站观看」按钮 */
#videoExternal { margin-top: 15px; }

/* -------------------- 视频列表（后台上传的视频） -------------------- */
.vplaylist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.vpl-item {
  display: flex; align-items: center; gap: 11px;
  width: 100%; padding: 11px 12px;
  background: rgba(255,255,255,.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-align: left; cursor: pointer; font-family: inherit;
  transition: border-color .2s, background-color .2s, transform .15s;
}
.vpl-item:hover { border-color: rgba(240,180,41,.4); background: rgba(240,180,41,.06); transform: translateX(2px); }
.vpl-item.is-active {
  border-color: rgba(240,180,41,.55);
  background: linear-gradient(90deg, rgba(240,180,41,.13), rgba(240,180,41,.04));
}
.vpl-item:focus-visible { outline: 2px solid var(--gold); outline-offset: -2px; }

.vpl-num {
  flex: none; width: 24px; height: 24px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,.06); color: var(--muted);
  font-family: var(--mono); font-size: 11.5px; font-weight: 700;
  transition: background-color .2s, color .2s;
}
.vpl-item.is-active .vpl-num { background: var(--gold); color: #0b0e15; }

.vpl-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.vpl-title {
  font-size: 13px; font-weight: 600; color: var(--ink-2); line-height: 1.5;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.vpl-item.is-active .vpl-title { color: var(--gold-2); }
.vpl-meta { font-size: 11px; color: var(--faint); font-variant-numeric: tabular-nums; }

.vpl-play {
  flex: none; width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,.05); color: var(--muted);
  transition: background-color .2s, color .2s, transform .2s;
}
.vpl-item:hover .vpl-play { background: var(--gold-dim); color: var(--gold-2); }
.vpl-item.is-active .vpl-play { background: rgba(240,180,41,.2); color: var(--gold-2); }

.vplaylist-tip {
  margin-top: 13px; padding-top: 13px;
  border-top: 1px solid var(--border-soft);
  font-size: 11.5px; color: var(--faint); line-height: 1.6;
}

/* 安装前提醒 */
.side-block--tip {
  border-color: rgba(34,211,238,.24);
  background: linear-gradient(180deg, rgba(34,211,238,.06), var(--surface));
}
.side-block--tip h3 { color: var(--cyan); }

/* ------------------------------ 视频区块响应式 ------------------------------ */
@media (max-width: 1080px) {
  .video-grid { grid-template-columns: minmax(0, 1fr); }
  .video-side { flex-direction: row; flex-wrap: wrap; }
  .video-side > * { flex: 1 1 300px; }
}
@media (max-width: 620px) {
  .video-head { flex-direction: column; gap: 5px; }
  .vp-play { width: 60px; height: 60px; margin: -30px 0 0 -30px; }
  .vp-caption { bottom: 14px; padding: 6px 14px; font-size: 11.5px; }
  .vp-inner { padding: 18px 22px; }
  .vp-inner strong { font-size: 15px; }
  .chapter { padding: 9px 8px; gap: 8px; }
  .ch-time { min-width: 38px; font-size: 11.5px; }
  .ch-title { font-size: 12.5px; }
}

/* ==========================================================================
   管理后台（admin.html）
   ========================================================================== */

/* ------------------------------ 登录页 ------------------------------ */
.admin-login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: 100%;
  max-width: 380px;
  padding: 38px 34px 30px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  box-shadow: var(--shadow-lg);
}
.login-logo { height: 40px; width: auto; margin: 0 auto 22px; }
.login-card h1 { font-size: 22px; margin-bottom: 8px; }
.login-sub { font-size: 13.5px; color: var(--muted); margin-bottom: 24px; }
.login-card .field { text-align: left; margin-bottom: 18px; }
.login-card input {
  width: 100%; padding: 13px 15px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--ink);
  font-size: 15px; letter-spacing: .04em;
}
.login-card input:focus {
  outline: none; border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(240,180,41,.14);
}
.login-foot { margin-top: 16px; font-size: 11.5px; color: var(--faint); line-height: 1.6; }

/* ------------------------------ 顶栏 ------------------------------ */
.admin-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(8,10,15,.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.admin-header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; height: 66px;
}
.admin-brand { display: flex; align-items: center; gap: 12px; }
.admin-brand img { height: 32px; width: auto; }
.admin-badge {
  padding: 4px 11px; border-radius: 99px;
  background: var(--gold-dim); border: 1px solid rgba(240,180,41,.3);
  color: var(--gold-2); font-size: 11.5px; font-weight: 700;
}
.admin-header-actions { display: flex; align-items: center; gap: 10px; }
.admin-env {
  padding: 5px 12px; border-radius: 99px;
  font-size: 11.5px; font-weight: 600;
  border: 1px solid var(--border); color: var(--muted);
}
.admin-env.is-ok { border-color: rgba(38,208,124,.35); background: rgba(38,208,124,.1); color: var(--green); }
.admin-env.is-warn { border-color: rgba(240,180,41,.35); background: var(--gold-dim); color: var(--gold-2); }

.admin-tabs {
  display: flex; gap: 4px; overflow-x: auto;
  padding-bottom: 0;
}
.admin-tab {
  flex: none;
  padding: 12px 16px 14px;
  background: none; border: 0; border-bottom: 2px solid transparent;
  color: var(--muted); font-size: 14px; font-weight: 600;
  cursor: pointer; white-space: nowrap;
  transition: color .2s, border-color .2s;
}
.admin-tab:hover { color: var(--ink-2); }
.admin-tab.is-active { color: var(--gold-2); border-bottom-color: var(--gold); }

/* ------------------------------ 主体 ------------------------------ */
.admin-main { padding: clamp(24px, 3vw, 38px) 24px 80px; }
.admin-panel { display: none; }
.admin-panel.is-active { display: block; animation: fadeIn .25s var(--ease); }

.admin-card {
  padding: 24px 26px 26px;
  margin-bottom: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.admin-card h3 { font-size: 16.5px; margin-bottom: 16px; }
.card-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; margin-bottom: 18px;
}
.card-head h3 { margin-bottom: 0; }
.card-head .muted { font-size: 12.5px; color: var(--faint); }

.admin-grid-2 {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px; margin-bottom: 20px;
}
.admin-grid-2 .admin-card { margin-bottom: 0; }

/* ------------------------------ 指标卡 ------------------------------ */
.stat-row {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px; margin-bottom: 20px;
}
.stat-box {
  display: flex; flex-direction: column; gap: 5px;
  padding: 20px 22px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--border);
}
.stat-box.is-gold { border-left-color: var(--gold); }
.stat-box.is-warn { border-left-color: var(--red); background: linear-gradient(180deg, rgba(246,70,93,.07), var(--surface)); }
.sb-label { font-size: 12.5px; color: var(--muted); }
.sb-value {
  font-family: var(--mono); font-size: 27px; font-weight: 700;
  letter-spacing: -.02em; color: var(--ink); line-height: 1.15;
}
.stat-box.is-gold .sb-value { color: var(--gold-2); }
.stat-box.is-warn .sb-value { color: #ff8a9b; }
.sb-sub { font-size: 11.5px; color: var(--faint); }

/* ------------------------------ 键值表 ------------------------------ */
.kv { display: flex; flex-direction: column; }
.kv-row {
  display: flex; gap: 16px; padding: 9px 0;
  border-bottom: 1px solid var(--border-soft); font-size: 13px;
}
.kv-row:last-child { border-bottom: 0; }
.kv-row dt { flex: none; width: 84px; color: var(--muted); }
.kv-row dd {
  flex: 1; min-width: 0; margin: 0;
  color: var(--ink-2); font-family: var(--mono); font-size: 12.5px;
  overflow-wrap: anywhere;
}

/* ------------------------------ 迷你列表 ------------------------------ */
.mini-list { display: flex; flex-direction: column; }
.mini-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; padding: 11px 0;
  border-bottom: 1px solid var(--border-soft);
}
.mini-row:last-child { border-bottom: 0; }
.mini-row strong { display: block; font-size: 13.5px; font-family: var(--mono); }
.mini-row .muted { display: block; font-size: 11.5px; color: var(--faint); margin-top: 3px; }
.mini-right { display: flex; align-items: center; gap: 10px; flex: none; }
.empty { padding: 26px 0; text-align: center; color: var(--faint); font-size: 13.5px; }

/* ------------------------------ 卡密列表 ------------------------------ */
.card-list { max-height: 460px; overflow-y: auto; }
.card-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; padding: 9px 12px;
  border-radius: 8px;
}
.card-row:nth-child(odd) { background: rgba(255,255,255,.022); }
.card-row code {
  flex: 1; min-width: 0;
  background: none; border: 0; padding: 0;
  font-family: var(--mono); font-size: 13px; color: var(--gold-2);
  overflow-wrap: anywhere;
}
.icon-btn {
  flex: none; width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 7px; border: 1px solid var(--border);
  background: transparent; color: var(--faint);
  font-size: 13px; cursor: pointer;
  transition: all .18s;
}
.icon-btn:hover { border-color: rgba(246,70,93,.5); color: var(--red); background: rgba(246,70,93,.1); }

/* ------------------------------ 表格 ------------------------------ */
.table-wrap { overflow-x: auto; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table th {
  padding: 10px 14px; text-align: left; white-space: nowrap;
  font-size: 11.5px; font-weight: 600; letter-spacing: .04em;
  color: var(--faint); border-bottom: 1px solid var(--border);
}
.admin-table td {
  padding: 12px 14px; border-bottom: 1px solid var(--border-soft);
  color: var(--ink-2); vertical-align: middle;
}
.admin-table tbody tr:hover td { background: rgba(255,255,255,.02); }
.admin-table code {
  background: none; border: 0; padding: 0;
  font-family: var(--mono); font-size: 12px; color: var(--gold-2);
}

/* ------------------------------ 标签 / 徽章 ------------------------------ */
.pill {
  display: inline-block; padding: 3px 10px; border-radius: 99px;
  font-size: 11.5px; font-weight: 600;
  background: rgba(255,255,255,.06); color: var(--ink-2);
  font-family: var(--mono);
}
.pill--gold { background: var(--gold-dim); color: var(--gold-2); }
.pill--warn { background: rgba(240,180,41,.18); color: var(--gold-2); }
.admin-card--alert {
  border-color: rgba(240,180,41,.4);
  background: linear-gradient(180deg, rgba(240,180,41,.07), var(--surface));
}
.admin-card--danger {
  border-color: rgba(246,70,93,.5);
  background: linear-gradient(180deg, rgba(246,70,93,.11), var(--surface));
}
.admin-card--danger h3 { color: #ff8a9b; }
.pill--danger { background: rgba(246,70,93,.2); color: #ff8a9b; }
.domain-warn-text {
  font-size: 13px; line-height: 1.8; color: var(--ink-2);
}
.domain-warn-text code {
  font-family: var(--mono); font-size: 12.5px;
  background: rgba(255,255,255,.07); border: 0; padding: 2px 7px; color: var(--gold-2);
}
.domain-warn-text strong { color: #ff8a9b; }
.pill--ok { background: rgba(38,208,124,.14); color: var(--green); }
.pill--muted { background: rgba(255,255,255,.05); color: var(--faint); }

/* ------------------------------ 表单 ------------------------------ */
.form-row {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px; margin-bottom: 18px;
}
.admin-card .field label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-2); margin-bottom: 8px; }
.admin-card .field input,
.admin-card textarea {
  width: 100%; padding: 12px 14px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--ink);
  font-family: var(--mono); font-size: 14px; line-height: 1.6;
}
.admin-card textarea { resize: vertical; }
.admin-card .field input:focus,
.admin-card textarea:focus {
  outline: none; border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(240,180,41,.14);
}
.row-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.row-actions .muted { font-size: 12.5px; color: var(--faint); }

/* ------------------------------ 提示块 ------------------------------ */
.notice {
  padding: 15px 18px; margin-bottom: 18px;
  border-radius: var(--radius); font-size: 13px; line-height: 1.7;
}
.notice--warn {
  border: 1px solid rgba(240,180,41,.28);
  background: rgba(240,180,41,.07);
  color: var(--ink-2);
}
.notice--ok {
  border: 1px solid rgba(38,208,124,.3);
  background: rgba(38,208,124,.08);
  color: var(--ink-2);
}
.notice--ok strong { color: var(--green); }

/* 视频管理列表 */
.video-admin-list { display: flex; flex-direction: column; gap: 10px; }
.video-admin-row {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255,255,255,.02);
}
.var-idx {
  flex: none; width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--gold-dim); color: var(--gold-2);
  font-family: var(--mono); font-size: 12px; font-weight: 700;
}
.var-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 5px; }
.var-title {
  width: 100%; padding: 7px 11px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--ink);
  font-size: 13.5px; font-weight: 600;
}
.var-title:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(240,180,41,.12); }
.var-main .muted { font-size: 11.5px; color: var(--faint); }
.var-main .muted a { color: var(--cyan); }
.var-actions { flex: none; display: flex; gap: 6px; }
.var-actions .icon-btn:disabled { opacity: .28; cursor: not-allowed; }
.var-actions .icon-btn:disabled:hover { border-color: var(--border); color: var(--faint); background: transparent; }
.icon-btn--danger:hover { border-color: rgba(246,70,93,.5); color: var(--red); background: rgba(246,70,93,.1); }

/* 编码不兼容提示 */
.codec-warn {
  display: block; margin-top: 6px;
  font-size: 11.5px; line-height: 1.6;
  color: #ff9fae;
}

@media (max-width: 620px) {
  .video-admin-row { flex-wrap: wrap; }
  .var-main { flex: 1 1 100%; order: 2; }
  .var-actions { order: 3; margin-left: auto; }
}

/* 访问控制相关 */
.ip-current {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 14px 16px; margin-bottom: 4px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: rgba(255,255,255,.02);
  font-size: 13px; color: var(--muted);
}
.ip-current code {
  font-family: var(--mono); font-size: 14px; color: var(--gold-2);
  background: rgba(240,180,41,.1); border: 0; padding: 4px 10px;
}
.ip-current .btn { margin-left: auto; }
.code-block {
  padding: 16px 18px; border-radius: var(--radius);
  background: var(--bg-2); border: 1px solid var(--border);
  font-family: var(--mono); font-size: 12px; line-height: 1.8;
  color: var(--ink-2); overflow-x: auto; white-space: pre;
}
.notice strong { display: block; margin-bottom: 6px; color: var(--gold-2); }
.notice code { font-size: 12px; }

/* ------------------------------ 上传区 ------------------------------ */
.dropzone {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 38px 24px; margin-bottom: 18px;
  border: 2px dashed var(--border); border-radius: var(--radius-lg);
  background: rgba(255,255,255,.015);
  color: var(--muted); text-align: center; cursor: pointer;
  transition: border-color .22s, background-color .22s, color .22s;
}
.dropzone:hover, .dropzone.is-over {
  border-color: var(--gold);
  background: rgba(240,180,41,.06);
  color: var(--gold-2);
}
.dropzone strong { font-size: 14.5px; color: var(--ink); }
.dropzone.is-over strong { color: var(--gold-2); }
.dropzone .muted { font-size: 12.5px; color: var(--faint); }

.upload-progress { margin-bottom: 18px; }
.up-bar {
  height: 8px; border-radius: 99px;
  background: var(--bg-2); border: 1px solid var(--border);
  overflow: hidden; margin-bottom: 12px;
}
.up-bar i {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, var(--gold-2), var(--gold));
  transition: width .25s var(--ease);
}
.upload-progress p { font-size: 12.5px; color: var(--muted); line-height: 1.7; overflow-wrap: anywhere; }
.upload-progress code { font-size: 11.5px; }
.up-warn { display: inline-block; margin-top: 6px; color: var(--gold-2); }
.upload-progress .btn { margin-top: 10px; }

/* -------------------- 管理后台响应式 -------------------- */
@media (max-width: 1080px) {
  .stat-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .admin-grid-2 { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .admin-header-inner { height: 60px; }
  .admin-brand img { height: 26px; }
  .admin-badge, .admin-env { display: none; }
  .admin-header-actions .btn { padding: 8px 13px; font-size: 13px; }
  .admin-main { padding: 20px 18px 60px; }
  .stat-row { grid-template-columns: 1fr; gap: 12px; }
  .admin-card { padding: 20px 18px 22px; }
  .form-row { grid-template-columns: 1fr; gap: 14px; }
  .kv-row { flex-direction: column; gap: 3px; }
  .kv-row dt { width: auto; }
  .mini-row { flex-direction: column; align-items: flex-start; gap: 8px; }
  .dropzone { padding: 28px 16px; }
}

/* -------------------------------- 响应式 -------------------------------- */
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; gap: 52px; }
  .hero-visual { perspective: none; max-width: 860px; }
  .device { transform: none; }
  .float-card--a { left: 10px; bottom: -18px; }
  .float-card--b { right: 10px; top: -18px; }

  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 24px; }
  .download-wrap { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step::after { display: none; }
}

@media (max-width: 860px) {
  :root { --header-h: 64px; }

  .nav { display: none; }
  .nav-toggle { display: flex; }
  .brand img { height: 33px; }

  .showcase { grid-template-columns: 1fr; }
  .hero-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 22px; }
  .footer-inner { grid-template-columns: 1fr; gap: 38px; }
  .footer-nav { gap: 20px; }
}

@media (max-width: 620px) {
  body { font-size: 15.5px; }
  .container { padding-inline: 18px; }

  .hero { padding-top: calc(var(--header-h) + 36px); }
  .hero-actions .btn { width: 100%; }
  .float-card { padding: 10px 14px; }
  .fc-value { font-size: 16px; }
  .float-card--b { top: -14px; right: 6px; }

  .feature-grid { grid-template-columns: 1fr; }
  .feature { padding: 26px 22px 28px; }
  .stats-grid { grid-template-columns: 1fr; gap: 22px; }
  .steps { grid-template-columns: 1fr; }

  .dl-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 18px; }
  .dl-head { flex-wrap: wrap; gap: 14px; }
  .dl-badge { margin-left: 0; }
  .header-actions .btn { display: none; }

  .footer-nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-actions .btn { width: 100%; }
  .mobile-nav { padding-inline: 18px; }
}

/* ---------------------------- 无障碍：减少动效 ---------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .js .reveal, .reveal { opacity: 1; transform: none; }
  .device { transform: none !important; }
}

/* --------------------------------- 打印 --------------------------------- */
@media print {
  .bg-layer, .site-header, .scroll-hint, .float-card, .lightbox, .toast { display: none !important; }
  body { background: #fff; color: #000; }
  .reveal { opacity: 1 !important; transform: none !important; }
}