:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-card-hover: #273549;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.25);
  --green: #22c55e;
  --yellow: #eab308;
  --red: #ef4444;
  --border: rgba(148, 163, 184, 0.08);
  --border-hover: rgba(99, 102, 241, 0.35);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 28px -6px rgba(0,0,0,0.45);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}

/* ── 滚动条美化 ── */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg-primary)}
::-webkit-scrollbar-thumb{background:#334155;border-radius:5px;border:2px solid var(--bg-primary)}
::-webkit-scrollbar-thumb:hover{background:#475569}

/* ── 文本选区 ── */
::selection{background:rgba(99,102,241,.35);color:#fff}

/* ── 键盘焦点可见性（无障碍） ── */
:focus-visible{outline:2px solid var(--accent-light);outline-offset:3px;border-radius:4px}

body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.6;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

/* ── 背景氛围：光球 + 星点 ── */
.bg-animation{
  position:fixed;top:0;left:0;width:100%;height:100%;
  pointer-events:none;z-index:0;overflow:hidden;
}
.bg-animation .orb{
  position:absolute;border-radius:50%;filter:blur(90px);opacity:.12;
  animation:float 22s ease-in-out infinite;
}
.bg-animation .orb:nth-child(1){
  width:500px;height:500px;background:var(--accent);
  top:-180px;right:-120px;animation-delay:0s;
}
.bg-animation .orb:nth-child(2){
  width:400px;height:400px;background:#8b5cf6;
  bottom:-120px;left:-100px;animation-delay:-8s;
}
.bg-animation .orb:nth-child(3){
  width:320px;height:320px;background:#06b6d4;
  top:55%;left:55%;animation-delay:-15s;
}
.bg-animation::after{
  content:'';position:absolute;inset:0;
  background-image:
    radial-gradient(1.5px 1.5px at 12% 28%, rgba(255,255,255,.5), transparent),
    radial-gradient(1px 1px at 28% 12%, rgba(255,255,255,.32), transparent),
    radial-gradient(1.5px 1.5px at 43% 68%, rgba(255,255,255,.4), transparent),
    radial-gradient(1px 1px at 58% 32%, rgba(255,255,255,.28), transparent),
    radial-gradient(1.5px 1.5px at 71% 55%, rgba(255,255,255,.42), transparent),
    radial-gradient(1px 1px at 84% 18%, rgba(255,255,255,.28), transparent),
    radial-gradient(1px 1px at 90% 74%, rgba(255,255,255,.32), transparent),
    radial-gradient(1px 1px at 8% 82%, rgba(255,255,255,.28), transparent),
    radial-gradient(1px 1px at 62% 88%, rgba(255,255,255,.28), transparent),
    radial-gradient(1px 1px at 34% 45%, rgba(255,255,255,.22), transparent);
  animation:twinkle 5s ease-in-out infinite;
}
@keyframes float{
  0%,100%{transform:translate(0,0) scale(1)}
  25%{transform:translate(50px,-40px) scale(1.06)}
  50%{transform:translate(-25px,30px) scale(.94)}
  75%{transform:translate(-40px,-50px) scale(1.04)}
}
@keyframes twinkle{
  0%,100%{opacity:.45}
  50%{opacity:1}
}

.container{max-width:1060px;margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ── Hero ── */
.hero{text-align:center;padding:80px 0 44px}
.hero-avatar{
  width:96px;height:96px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),#8b5cf6);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 24px;font-size:42px;
  box-shadow:0 0 40px var(--accent-glow);
  animation:pulse-glow 3s ease-in-out infinite;
  transition:transform .35s var(--bounce);
  cursor:default;
}
.hero-avatar:hover{transform:scale(1.1) rotate(8deg)}
@keyframes pulse-glow{
  0%,100%{box-shadow:0 0 30px var(--accent-glow)}
  50%{box-shadow:0 0 60px rgba(99,102,241,.45)}
}
.hero h1{
  font-size:clamp(2rem,5vw,2.8rem);font-weight:800;letter-spacing:-.03em;
  background:linear-gradient(135deg,#f1f5f9 0%,#818cf8 50%,#a78bfa 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  margin-bottom:10px;
}
.hero .tagline{font-size:1.05rem;color:var(--text-secondary);max-width:480px;margin:0 auto 6px}

.section-title{
  font-size:1.35rem;font-weight:700;margin-bottom:24px;
  display:flex;align-items:center;gap:10px;
}
.section-title::before{
  content:'';display:inline-block;width:4px;height:22px;
  background:var(--accent);border-radius:4px;
}

/* ── 服务卡片网格 ── */
.projects-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(310px,1fr));
  gap:18px;margin-bottom:50px;
}

.project-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:26px 24px;
  transition:all var(--transition);cursor:pointer;text-decoration:none;
  color:inherit;display:flex;flex-direction:column;gap:14px;
  position:relative;overflow:hidden;
  will-change:transform;
}
/* 顶部渐变光条：hover 时从左展开 */
.project-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent),#8b5cf6,#06b6d4);
  transform:scaleX(0);transform-origin:left;
  transition:transform .4s var(--transition);
  opacity:.9;
}
.project-card:hover{
  border-color:var(--border-hover);background:var(--bg-card-hover);
  transform:translateY(-5px);
  box-shadow:var(--shadow-lg), 0 0 0 1px rgba(99,102,241,.12), 0 0 42px -10px var(--accent-glow);
}
.project-card:hover::before{transform:scaleX(1)}
/* 点击按下反馈 */
.project-card:active{
  transform:translateY(-1px) scale(.97);
  transition-duration:.08s;
}

.card-header{display:flex;align-items:flex-start;gap:14px}
.card-icon{
  width:46px;height:46px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;
  transition:transform .35s var(--bounce), box-shadow .3s ease;
}
.card-icon.astrbot{background:rgba(99,102,241,.12);color:#818cf8}
.card-icon.terraria{background:rgba(34,197,94,.12);color:#4ade80}
/* 卡片 hover：图标上浮微转 */
.project-card:hover .card-icon{
  transform:translateY(-3px) rotate(-8deg) scale(1.12);
  box-shadow:0 8px 20px -6px var(--accent-glow);
}

.card-info h3{font-size:1.05rem;font-weight:700;margin-bottom:3px}
.card-info .card-desc{font-size:.82rem;color:var(--text-secondary);line-height:1.4}

/* ── 卡片服务状态指示器 ── */
.card-status{
  display:flex;align-items:center;gap:7px;margin-top:auto;
  padding-top:12px;border-top:1px solid var(--border);
  font-size:.76rem;color:var(--text-secondary);
  transition:border-color .3s ease;
}
.project-card:hover .card-status{border-color:rgba(148,163,184,.16)}
.card-status .status-dot{
  width:8px;height:8px;border-radius:50%;background:var(--text-muted);
  flex-shrink:0;transition:background .4s ease, box-shadow .4s ease;
}
.card-status.online .status-dot{background:var(--green);animation:pulse-ring 2s ease-in-out infinite}
.card-status.offline .status-dot{background:var(--red)}
.card-status.checking .status-dot{background:var(--yellow);animation:blink 1s ease-in-out infinite}
.card-status .status-text{transition:color .3s ease}
.card-status.online .status-text{color:var(--green)}
.card-status.offline .status-text{color:var(--red)}

@keyframes pulse-ring{
  0%,100%{box-shadow:0 0 0 0 rgba(34,197,94,.45)}
  50%{box-shadow:0 0 0 6px rgba(34,197,94,0)}
}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.35}}

/* ── Footer 与返回链接（下划线动效） ── */
.footer{
  text-align:center;padding:36px 0;border-top:1px solid var(--border);margin-top:30px;
}
.footer p{color:var(--text-muted);font-size:.82rem}
.footer a{color:var(--accent-light);text-decoration:none;transition:color var(--transition)}
.footer a:hover{color:var(--text-primary)}

.back-link{
  display:inline-flex;align-items:center;gap:8px;color:var(--accent-light);
  text-decoration:none;font-size:.85rem;margin-bottom:26px;
  background:var(--bg-card);border:1px solid var(--border);
  padding:9px 18px;border-radius:100px;
  transition:color var(--transition), transform .25s ease, gap .25s ease,
             background .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.back-link:hover{
  color:var(--text-primary);gap:12px;transform:translateX(-3px);
  background:var(--bg-card-hover);border-color:var(--border-hover);
  box-shadow:0 8px 20px -8px var(--accent-glow);
}
.back-link:active{transform:translateX(-1px) scale(.96);transition-duration:.06s}

.status-page{padding:32px 0}

@media(max-width:768px){
  .hero{padding:50px 0 28px}
  .projects-grid{grid-template-columns:1fr}
  .project-card{padding:20px 18px}
}

/* ── 减少动效偏好（无障碍） ── */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  html{scroll-behavior:auto}
}