/* ============================================================
   MCJGSH 官网样式 —— 深色科技风
   ============================================================ */

:root {
  --bg: #05070d;
  --bg-soft: #0a0e18;
  --panel: rgba(14, 19, 31, 0.72);
  --line: rgba(120, 160, 220, 0.16);
  --line-strong: rgba(120, 200, 255, 0.34);
  --text: #e8f1ff;
  --dim: #8ba0bd;
  --dimmer: #607391;
  --cyan: #38e8ff;
  --violet: #7c5cff;
  --green: #00ffa3;
  --radius: 16px;
  --font: "Segoe UI", "Microsoft YaHei UI", "PingFang SC", system-ui, -apple-system, sans-serif;
  --mono: "Cascadia Code", "JetBrains Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
code {
  font-family: var(--mono);
  font-size: 0.88em;
  padding: 1px 6px;
  border-radius: 6px;
  background: rgba(56, 232, 255, 0.08);
  border: 1px solid rgba(56, 232, 255, 0.18);
  color: #9fe9ff;
}

/* ---------- 背景层 ---------- */
.bg-grid {
  position: fixed;
  inset: -50%;
  background-image:
    linear-gradient(rgba(80, 150, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(80, 150, 255, 0.055) 1px, transparent 1px);
  background-size: 46px 46px;
  transform: perspective(600px) rotateX(52deg);
  animation: gridMove 22s linear infinite;
  pointer-events: none;
  z-index: 0;
  opacity: 0.75;
}

@keyframes gridMove {
  from { background-position: 0 0; }
  to { background-position: 0 460px; }
}

.bg-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(650px 380px at 12% -6%, rgba(56, 232, 255, 0.16), transparent 70%),
    radial-gradient(560px 420px at 88% 4%, rgba(124, 92, 255, 0.18), transparent 72%),
    radial-gradient(700px 500px at 50% 108%, rgba(0, 255, 163, 0.1), transparent 70%);
}

#fx {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.55;
}

/* ---------- 导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(20px, 4vw, 56px);
  backdrop-filter: blur(14px);
  background: linear-gradient(180deg, rgba(5, 7, 13, 0.92), rgba(5, 7, 13, 0.55));
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 38px; height: 38px;
  border-radius: 11px;
  padding: 4px;
  background: linear-gradient(135deg, rgba(56, 232, 255, 0.2), rgba(124, 92, 255, 0.22));
  border: 1px solid var(--line-strong);
  box-shadow: 0 0 22px rgba(56, 232, 255, 0.18);
  object-fit: contain;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 17px; letter-spacing: 1px; }
.brand-text em { font-style: normal; font-size: 11px; color: var(--dim); letter-spacing: 0.4px; }

.tabs {
  position: relative;
  display: flex;
  gap: 4px;
  padding: 4px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(10, 15, 26, 0.66);
}

.tabs .tab {
  position: relative;
  z-index: 2;
  padding: 7px 20px;
  font-size: 14px;
  color: var(--dim);
  border-radius: 999px;
  transition: color 0.25s ease;
  white-space: nowrap;
}
.tabs .tab:hover { color: var(--text); }
.tabs .tab.active { color: #eaf9ff; }

.tab-indicator {
  position: absolute;
  top: 4px; bottom: 4px;
  left: 4px;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(120deg, rgba(56, 232, 255, 0.28), rgba(124, 92, 255, 0.34));
  border: 1px solid rgba(56, 232, 255, 0.4);
  box-shadow: 0 0 18px rgba(56, 232, 255, 0.25);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), width 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 1;
}

.nav-right { display: flex; align-items: center; gap: 12px; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--dim);
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(10, 15, 26, 0.6);
  white-space: nowrap;
}
.pill .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* ---------- 更新公告 ---------- */
.update-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: 11px;
  background: rgba(10, 15, 26, 0.55);
  font-size: 12.5px;
  color: var(--dim);
}
.update-banner .ub-tag {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cyan);
  padding: 2px 8px;
  border: 1px solid rgba(56, 232, 255, 0.35);
  border-radius: 999px;
  background: rgba(56, 232, 255, 0.08);
}
.update-banner .ub-text b { color: var(--text); }
.update-banner .ub-link {
  margin-left: auto;
  color: var(--cyan);
  text-decoration: none;
  white-space: nowrap;
}
.update-banner .ub-link:hover { text-decoration: underline; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 22px;
  border-radius: 11px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
  white-space: nowrap;
}
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-block { width: 100%; }

.btn-primary {
  color: #041018;
  background: linear-gradient(120deg, var(--cyan), #64f5d0 45%, var(--violet));
  background-size: 160% 100%;
  box-shadow: 0 10px 30px rgba(56, 232, 255, 0.22);
  animation: btnShift 6s ease infinite;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(56, 232, 255, 0.32); }

@keyframes btnShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.btn-ghost {
  color: var(--text);
  background: rgba(20, 28, 44, 0.6);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--cyan); transform: translateY(-2px); }

/* ---------- 主内容 ---------- */
main {
  position: relative;
  z-index: 5;
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px clamp(20px, 4vw, 56px) 70px;
}

.panel { display: none; }
.panel.active { display: block; animation: panelIn 0.5s cubic-bezier(0.22, 1, 0.36, 1); }

@keyframes panelIn {
  from { opacity: 0; transform: translateY(18px); filter: blur(4px); }
  to { opacity: 1; transform: none; filter: none; }
}

/* ---------- 首页 Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: center;
  min-height: min(72vh, 640px);
  padding: 30px 0 20px;
}

.tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.6px;
  color: #8fe9ff;
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid rgba(56, 232, 255, 0.28);
  background: rgba(56, 232, 255, 0.07);
}

.hero-title { margin: 18px 0 0; font-size: clamp(46px, 7vw, 86px); line-height: 1.02; letter-spacing: -1px; }
.hero-title .grad {
  background: linear-gradient(100deg, #ffffff 10%, var(--cyan) 45%, var(--violet) 80%);
  background-size: 220% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shine 7s linear infinite;
}
@keyframes shine { to { background-position: 220% center; } }

.hero-sub {
  display: inline-block;
  margin-top: 8px;
  font-size: clamp(19px, 2.4vw, 27px);
  font-weight: 500;
  color: var(--dim);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.hero-desc { margin: 20px 0 0; max-width: 520px; color: var(--dim); font-size: 15.5px; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

.hero-stats {
  display: flex;
  gap: 34px;
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
}
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats b {
  font-size: 26px;
  font-family: var(--mono);
  background: linear-gradient(120deg, var(--cyan), var(--green));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-stats span { font-size: 12.5px; color: var(--dimmer); }

/* ---------- 视觉区：轨道 + 控制台 ---------- */
.hero-visual { position: relative; padding: 24px 0; }

.orbit {
  position: absolute;
  top: -34px; right: 6px;
  width: 240px; height: 240px;
  display: grid;
  place-items: center;
  opacity: 0.85;
  pointer-events: none;
}
.orbit .ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(56, 232, 255, 0.22);
}
.orbit .r1 { inset: 0; animation: spin 18s linear infinite; }
.orbit .r2 { inset: 26px; border-color: rgba(124, 92, 255, 0.28); animation: spin 12s linear infinite reverse; }
.orbit .r3 { inset: 54px; border-color: rgba(0, 255, 163, 0.2); animation: spin 24s linear infinite; }
.orbit .core {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(56, 232, 255, 0.6);
}
@keyframes spin { to { transform: rotate(360deg); } }

.console-card {
  position: relative;
  margin-top: 40px;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, rgba(12, 18, 30, 0.94), rgba(7, 10, 18, 0.96));
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 60px rgba(56, 232, 255, 0.08);
  overflow: hidden;
}
.console-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(300px 160px at 80% 0%, rgba(56, 232, 255, 0.14), transparent 70%);
  pointer-events: none;
}

.console-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: rgba(10, 15, 26, 0.8);
}
.console-bar i {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #2f3b4f;
}
.console-bar i:nth-child(1) { background: #ff5f57; }
.console-bar i:nth-child(2) { background: #ffbd2e; }
.console-bar i:nth-child(3) { background: #28c840; }
.console-bar span { margin-left: 8px; font-size: 12px; color: var(--dim); font-family: var(--mono); }

.console-body {
  margin: 0;
  padding: 16px 16px 10px;
  min-height: 232px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.85;
  color: #9fb7d4;
  white-space: pre-wrap;
  word-break: break-all;
}
.console-body .ok { color: var(--green); }
.console-body .info { color: #6fc3ff; }
.console-body .warn { color: #ffd166; }

.console-meta {
  display: flex;
  justify-content: space-between;
  padding: 9px 16px;
  font-size: 11.5px;
  font-family: var(--mono);
  color: var(--dimmer);
  border-top: 1px solid var(--line);
  background: rgba(8, 12, 20, 0.8);
}
.console-meta .live { color: var(--green); display: inline-flex; align-items: center; gap: 6px; }
.console-meta .live .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: blink 1.6s infinite;
}

/* ---------- 核心跑马灯 ---------- */
.marquee {
  margin: 26px 0 10px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee-track {
  display: flex;
  gap: 42px;
  width: max-content;
  animation: marquee 26s linear infinite;
}
.marquee-track span {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 2px;
  color: #6f86a6;
  text-transform: uppercase;
}
.marquee:hover .marquee-track { animation-play-state: paused; }

@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 区块标题 ---------- */
.section-head { margin: 54px 0 22px; }
.section-head h2 {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -0.3px;
}
.section-head p { margin: 8px 0 0; color: var(--dim); }

/* ---------- 功能卡 ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature {
  position: relative;
  padding: 22px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.3s ease, box-shadow 0.3s ease;
  overflow: hidden;
}
.feature::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(220px 120px at 100% 0%, rgba(56, 232, 255, 0.14), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.feature:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
}
.feature:hover::after { opacity: 1; }

.feature .icon { font-size: 22px; margin-bottom: 10px; }
.feature h3 { margin: 0 0 8px; font-size: 16px; }
.feature p { margin: 0; color: var(--dim); font-size: 13.6px; }

/* ---------- 下载页 ---------- */
.dl-formats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.dl-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 18px;
}

.dl-card {
  position: relative;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(400px 200px at 100% 0%, rgba(56, 232, 255, 0.12), transparent 65%),
    linear-gradient(160deg, rgba(14, 21, 34, 0.92), rgba(8, 12, 21, 0.94));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.42);
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.3s ease;
}
.dl-card:hover { transform: translateY(-4px); border-color: var(--cyan); }
.dl-card > .btn { margin-top: 18px; }
.dl-size { margin: 10px 0 0; font-size: 12px; color: var(--dimmer); font-family: var(--mono); }
.dl-inline { color: var(--cyan); border-bottom: 1px dashed rgba(56, 232, 255, 0.4); }
.dl-top { display: flex; align-items: center; justify-content: space-between; }
.badge {
  font-size: 11.5px;
  padding: 4px 10px;
  border-radius: 999px;
  color: #9bf3d6;
  border: 1px solid rgba(0, 255, 163, 0.3);
  background: rgba(0, 255, 163, 0.08);
}
.ver { font-family: var(--mono); color: var(--dim); font-size: 13px; }
.dl-card h3 { margin: 16px 0 4px; font-size: 20px; }
.dl-meta { margin: 0; color: var(--dim); font-size: 13px; min-height: 40px; }
.badge.alt {
  color: #b9c9ff;
  border-color: rgba(124, 92, 255, 0.35);
  background: rgba(124, 92, 255, 0.1);
}

.dl-list { margin: 16px 0 0; padding: 0; list-style: none; }
.dl-list li {
  position: relative;
  padding-left: 20px;
  color: var(--dim);
  font-size: 13px;
  margin-bottom: 8px;
}
.dl-list li::before {
  content: "";
  position: absolute;
  left: 2px; top: 9px;
  width: 7px; height: 7px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
}

.info-card {
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
}
.info-card h4 { margin: 0 0 12px; font-size: 15px; }

.req { list-style: none; margin: 0; padding: 0; }
.req li {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 0;
  border-bottom: 1px dashed rgba(120, 160, 220, 0.12);
  font-size: 13px;
}
.req li:last-child { border-bottom: none; }
.req span { color: var(--dimmer); }
.req b { color: var(--text); font-weight: 600; text-align: right; }

.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; }
.steps li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 9px 0;
  font-size: 13px;
  color: var(--dim);
}
.steps b {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--cyan);
  border: 1px solid rgba(56, 232, 255, 0.3);
  border-radius: 6px;
  padding: 1px 6px;
  margin-top: 2px;
}

.changelog { display: grid; gap: 12px; }
.log-row {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 18px;
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
}
.log-ver { font-family: var(--mono); color: var(--cyan); font-size: 14px; }
.log-body h4 { margin: 0 0 6px; font-size: 15px; }
.log-body p { margin: 0; color: var(--dim); font-size: 13.4px; }

/* ---------- 关于页 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  align-items: start;
}
.about-text p { color: var(--dim); margin: 0 0 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chips span {
  font-size: 12px;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(20, 28, 44, 0.6);
  color: #a9c4e3;
}

.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.stat-card {
  padding: 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  text-align: center;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.stat-card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.stat-card b {
  display: block;
  font-size: 28px;
  font-family: var(--mono);
  background: linear-gradient(120deg, var(--cyan), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-card span { font-size: 12px; color: var(--dimmer); }

.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.principle {
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
}
.principle h4 { margin: 0 0 8px; font-size: 15px; color: #bfe6ff; }
.principle p { margin: 0; color: var(--dim); font-size: 13.3px; }

/* ---------- 联系页 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.contact-card {
  padding: 26px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  text-align: center;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
.contact-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.4);
}
.contact-icon {
  width: 56px; height: 56px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  font-weight: 700;
  font-size: 15px;
  color: #05121a;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  box-shadow: 0 0 26px rgba(56, 232, 255, 0.28);
}
.contact-icon.mail {
  background: linear-gradient(135deg, var(--violet), var(--cyan));
  box-shadow: 0 0 26px rgba(124, 92, 255, 0.3);
}
.contact-card h3 { margin: 0; font-size: 16px; }
.contact-value {
  margin: 8px 0 16px;
  font-family: var(--mono);
  font-size: 18px;
  letter-spacing: 1px;
  color: #cbeaff;
}
.contact-actions { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }

.faq {
  margin-top: 26px;
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
}
.faq h3 { margin: 0 0 12px; font-size: 16px; }
.faq ul { margin: 0; padding-left: 18px; color: var(--dim); font-size: 13.6px; }
.faq li { margin-bottom: 7px; }

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  z-index: 5;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(6, 9, 15, 0.6), rgba(4, 6, 11, 0.96));
  padding: 44px clamp(20px, 4vw, 56px) 20px;
}
.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.1fr;
  gap: 28px;
}
.footer-brand p { margin: 12px 0 0; color: var(--dim); font-size: 13px; max-width: 320px; }
.footer-logo { display: flex; align-items: center; gap: 11px; }
.footer-logo img { width: 34px; height: 34px; object-fit: contain; }
.footer-logo strong { display: block; font-size: 16px; letter-spacing: 0.6px; }
.footer-logo span { font-size: 11.5px; color: var(--dim); }

.footer-col { display: flex; flex-direction: column; gap: 9px; }
.footer-col h5 {
  margin: 0 0 4px;
  font-size: 12.5px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: #8fb6d6;
}
.footer-col a { color: var(--dim); font-size: 13px; transition: color 0.2s ease, transform 0.2s ease; }
.footer-col a:hover { color: var(--cyan); transform: translateX(3px); }
.footer-note { font-size: 12px; color: var(--dimmer); }

.footer-bottom {
  max-width: 1180px;
  margin: 32px auto 0;
  padding-top: 16px;
  border-top: 1px solid rgba(120, 160, 220, 0.12);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 12px;
  color: var(--dimmer);
}
.footer-bottom .sep { color: rgba(120, 160, 220, 0.3); }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translate(-50%, 22px);
  z-index: 60;
  padding: 11px 20px;
  border-radius: 11px;
  border: 1px solid rgba(56, 232, 255, 0.4);
  background: rgba(8, 16, 28, 0.95);
  color: #d9f4ff;
  font-size: 13.5px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 24px rgba(56, 232, 255, 0.16);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 滚动揭示 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero-visual { order: -1; }
  .orbit { display: none; }
  .features, .principles { grid-template-columns: 1fr 1fr; }
  .dl-formats, .about-grid { grid-template-columns: 1fr; }
  .dl-info-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .nav-right .pill { display: none; }
}

@media (max-width: 680px) {
  .nav { flex-wrap: wrap; justify-content: center; gap: 10px; padding: 12px 16px; }
  .tabs { order: 3; width: 100%; justify-content: center; }
  .tabs .tab { padding: 7px 13px; font-size: 13px; }
  .hero { padding-top: 10px; }
  .hero-stats { gap: 20px; }
  .features, .principles, .contact-grid, .about-cards { grid-template-columns: 1fr; }
  .log-row { grid-template-columns: 1fr; gap: 6px; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}