/* CIRSS 浅色主题 · 公共样式（奶白 + 淡紫） */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --c1:#7b5cd6;            /* 品牌主紫 */
  --c2:#a78bfa;            /* 淡紫 */
  --c3:#e0709a;            /* 点缀粉 */
  --bg:#f7f5fb;            /* 奶白带紫 */
  --card:#ffffff;
  --fg:#3d3654;
  --fg2:#8a83a3;
  --fg3:#b3adc6;
  --border:rgba(123,92,214,0.12);
  --shadow:0 4px 24px rgba(123,92,214,0.08);
  --shadow-hover:0 12px 40px rgba(123,92,214,0.14);
  --radius:18px;
}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;background:var(--bg);color:var(--fg);overflow-x:hidden;min-height:100vh;min-height:100dvh;-webkit-font-smoothing:antialiased;touch-action:manipulation;line-height:1.6}

.hidden{display:none}

/* 背景层：轻盈漂浮光点 + 柔光 */
#bg-canvas{position:fixed;inset:0;z-index:0;pointer-events:none}
.glow{position:fixed;border-radius:50%;filter:blur(100px);pointer-events:none;z-index:0;will-change:transform}
.glow-1{width:480px;height:480px;background:rgba(167,139,250,0.16);top:-12%;right:-6%;animation:drift 14s ease-in-out infinite}
.glow-2{width:380px;height:380px;background:rgba(224,112,154,0.10);bottom:-8%;left:-8%;animation:drift 17s ease-in-out infinite reverse}
.glow-3{width:280px;height:280px;background:rgba(123,92,214,0.10);top:45%;left:35%;animation:drift 12s ease-in-out infinite}
@keyframes drift{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(26px,-18px) scale(1.06)}66%{transform:translate(-18px,24px) scale(0.96)}}

/* 顶部胶囊导航 */
.nav-wrap{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:100;display:flex;justify-content:center;width:100%;padding:0 1rem;pointer-events:none}
.nav{pointer-events:auto;display:flex;align-items:center;gap:0.2rem;background:rgba(255,255,255,0.72);backdrop-filter:blur(20px) saturate(1.4);-webkit-backdrop-filter:blur(20px) saturate(1.4);border:1px solid var(--border);border-radius:999px;padding:0.35rem;box-shadow:var(--shadow)}
.nav .brand{display:flex;align-items:center;gap:0.45rem;padding:0.35rem 0.9rem 0.35rem 0.7rem;text-decoration:none;color:var(--fg);font-weight:800;font-size:0.8rem;letter-spacing:2px;white-space:nowrap}
.nav .brand .dot{width:7px;height:7px;border-radius:50%;background:var(--c1);box-shadow:0 0 0 3px rgba(123,92,214,0.15);flex-shrink:0}
.nav .nav-link{color:var(--fg2);text-decoration:none;font-size:0.78rem;letter-spacing:1px;padding:0.35rem 0.85rem;border-radius:999px;transition:all 0.3s ease;white-space:nowrap}
.nav .nav-link:hover{color:var(--c1);background:rgba(123,92,214,0.06)}
.nav .nav-link.active{color:#fff;background:var(--c1);box-shadow:0 4px 14px rgba(123,92,214,0.35)}

/* 公共动画 */
@keyframes fadeInUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
@keyframes cardIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}

/* 页面头部 */
.page-header{text-align:center;margin-bottom:2.5rem;animation:fadeInUp 0.7s ease both}
.page-header h1{font-size:clamp(1.8rem,5vw,2.6rem);font-weight:800;letter-spacing:5px;margin-bottom:0.5rem;color:var(--fg)}
.page-header h1 em{font-style:normal;color:var(--c1)}
.page-header p{color:var(--fg2);font-size:0.85rem;letter-spacing:2px}

/* 空状态 / 加载 */
.empty-state{text-align:center;padding:3.5rem 2rem;color:var(--fg2);font-size:0.85rem;letter-spacing:1px}
.loader{text-align:center;padding:2rem;color:var(--fg3);font-size:0.8rem;letter-spacing:2px}

/* 页脚 */
.footer{text-align:center;color:var(--fg3);font-size:0.68rem;letter-spacing:3px;margin-top:4rem;padding-bottom:2rem;position:relative;z-index:1}
.footer a{color:var(--fg2);text-decoration:none;transition:color 0.3s ease}
.footer a:hover{color:var(--c1)}

/* Toast */
.toast{position:fixed;bottom:2rem;left:50%;transform:translateX(-50%) translateY(20px);background:#fff;border:1px solid var(--border);border-radius:12px;padding:0.75rem 1.4rem;color:var(--fg);font-size:0.85rem;z-index:3000;opacity:0;transition:all 0.3s ease;pointer-events:none;white-space:nowrap;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.error{border-color:rgba(224,112,154,0.35);color:var(--c3)}
.toast.success{border-color:rgba(123,92,214,0.35);color:var(--c1)}

/* 通用按钮 / 输入 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:0.4rem;padding:0.7rem 1.6rem;border:none;border-radius:12px;background:var(--c1);color:#fff;font-family:inherit;font-size:0.85rem;font-weight:600;letter-spacing:2px;cursor:pointer;transition:all 0.3s ease;box-shadow:0 6px 18px rgba(123,92,214,0.28)}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(123,92,214,0.38)}
.btn:disabled{opacity:0.45;cursor:not-allowed;transform:none}
.btn-ghost{background:#fff;color:var(--fg2);border:1px solid var(--border);box-shadow:none}
.btn-ghost:hover{color:var(--c1);border-color:rgba(123,92,214,0.3);box-shadow:var(--shadow)}
.btn-danger{background:#fff;color:var(--c3);border:1px solid rgba(224,112,154,0.3);box-shadow:none}
.btn-danger:hover{background:rgba(224,112,154,0.06);box-shadow:none;transform:none}

@media(max-width:640px){
  .nav-wrap{top:10px}
  .nav .brand{font-size:0.72rem;padding:0.3rem 0.7rem 0.3rem 0.6rem;letter-spacing:1px}
  .nav .nav-link{font-size:0.72rem;padding:0.3rem 0.65rem}
  .glow{filter:blur(70px)}
  .page-header h1{letter-spacing:3px}
}
/* 超小屏（iPhone SE/320px 档）：导航品牌只留圆点，避免挤压溢出 */
@media(max-width:380px){
  .nav .brand{font-size:0;padding:0.3rem 0.55rem;gap:0}
  .nav .nav-link{font-size:0.68rem;padding:0.3rem 0.55rem;letter-spacing:0.5px}
}

/* 骨架屏加载 */
.skel{position:relative;overflow:hidden;background:rgba(123,92,214,0.06);border-radius:12px}
.skel::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.75),transparent);transform:translateX(-100%);animation:shimmer 1.3s ease infinite}
@keyframes shimmer{to{transform:translateX(100%)}}
.skel-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.3rem 1.4rem;box-shadow:var(--shadow)}
.skel-line{height:12px;margin-bottom:10px}
.skel-line.w40{width:40%}
.skel-line.w70{width:70%}
.skel-line.w90{width:90%}
.skel-circle{width:38px;height:38px;border-radius:50%;flex-shrink:0}
.skel-row{display:flex;gap:0.75rem;align-items:center;margin-bottom:12px}

/* 细滚动条 */
.slim-scroll{scrollbar-width:thin;scrollbar-color:rgba(123,92,214,0.25) transparent}
.slim-scroll::-webkit-scrollbar{width:5px;height:5px}
.slim-scroll::-webkit-scrollbar-track{background:transparent}
.slim-scroll::-webkit-scrollbar-thumb{background:rgba(123,92,214,0.22);border-radius:6px}
.slim-scroll::-webkit-scrollbar-thumb:hover{background:rgba(123,92,214,0.4)}

/* 环形加载 */
.spin{display:inline-block;width:16px;height:16px;border:2px solid rgba(123,92,214,0.2);border-top-color:var(--c1);border-radius:50%;animation:rot 0.7s linear infinite;vertical-align:-3px}
@keyframes rot{to{transform:rotate(360deg)}}

/* 尊重系统减弱动效偏好 */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.01ms !important;transition-duration:0.01ms !important}
}