*{box-sizing:border-box;margin:0;padding:0}
/* ===== Material 3 设计令牌（参考 Shirone: hue 315 粉紫） ===== */
:root{
  --mc-hue:315;
  --mc-primary:oklch(0.68 0.17 var(--mc-hue));
  --mc-on-primary:#fff;
  --mc-primary-container:oklch(0.9 0.06 var(--mc-hue));
  --mc-on-primary-container:oklch(0.28 0.11 var(--mc-hue));
  --mc-secondary:oklch(0.6 0.12 calc(var(--mc-hue) + 30));
  --mc-tertiary:oklch(0.65 0.13 calc(var(--mc-hue) - 40));
  --mc-surface:oklch(0.13 0.03 var(--mc-hue));
  --mc-on-surface:#eae6f5;
  --mc-on-surface-variant:rgba(234,230,245,.66);
  --mc-surface-container:oklch(0.18 0.04 var(--mc-hue));
  --mc-surface-container-high:oklch(0.21 0.045 var(--mc-hue));
  --mc-surface-container-highest:oklch(0.24 0.05 var(--mc-hue));
  --mc-outline:rgba(234,230,245,.16);
  --mc-outline-variant:rgba(234,230,245,.09);
  --mc-scrim:rgba(4,2,10,.42);
  --mc-radius-l:28px;
  --mc-radius-m:18px;
  --mc-radius-s:12px;
  --mc-elev-1:0 2px 8px rgba(0,0,0,.25),0 0 1px rgba(255,255,255,.06);
  --mc-elev-2:0 8px 24px rgba(0,0,0,.32),0 0 1px rgba(255,255,255,.08);
  --mc-elev-3:0 18px 50px rgba(0,0,0,.42),0 0 1px rgba(255,255,255,.1);
  --mc-font:'Outfit','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
}
html,body{min-height:100%}
body{
  font-family:var(--mc-font);color:var(--mc-on-surface);
  background:oklch(0.11 0.028 var(--mc-hue));
  min-height:100vh;display:flex;flex-direction:column;position:relative;overflow-x:hidden;
}
/* ===== 高斯模糊背景层（毛玻璃主背景） ===== */
.bg-gauss{position:fixed;inset:-8%;z-index:0;pointer-events:none;
  background:url('/img/bg-home.jpg') center/cover no-repeat;
  -webkit-filter:blur(22px) saturate(1.05) brightness(.82);
  filter:blur(22px) saturate(1.05) brightness(.82);
  transform:scale(1.1);
  animation:bgBreath 14s ease-in-out infinite}
@keyframes bgBreath{
  0%,100%{transform:scale(1.1) translate(0,0)}
  50%{transform:scale(1.14) translate(-1%,1%)}
}
/* 流光背景（保留） */
body::before{content:'';position:fixed;inset:-60%;width:220%;height:220%;
  background:linear-gradient(45deg,
    oklch(0.55 0.2 var(--mc-hue)) 0%,
    oklch(0.6 0.17 calc(var(--mc-hue) + 20)) 22%,
    oklch(0.58 0.19 calc(var(--mc-hue) - 25)) 45%,
    oklch(0.56 0.16 calc(var(--mc-hue) + 60)) 70%,
    oklch(0.55 0.2 var(--mc-hue)) 100%);
  background-size:400% 400%;pointer-events:none;z-index:0;
  animation:aurora 26s ease-in-out infinite;opacity:.30;
  mix-blend-mode:overlay;z-index:1;
}
@keyframes aurora{
  0%{transform:rotate(0) scale(1)}
  50%{transform:rotate(180deg) scale(1.18)}
  100%{transform:rotate(360deg) scale(1)}}
body::after{content:'';position:fixed;inset:0;pointer-events:none;z-index:1;
  background:
    linear-gradient(180deg,rgba(6,4,14,.42) 0%,rgba(8,5,18,.30) 45%,rgba(10,6,20,.46) 100%),
    radial-gradient(120% 90% at 50% 45%,transparent 30%,rgba(6,4,14,.35) 100%);
}
#particles{position:fixed;inset:0;z-index:1;pointer-events:none}

/* ===== Top App Bar（Material 3） ===== */
.top-app-bar{position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:10px clamp(16px,4vw,40px);height:64px;
  background:color-mix(in oklab,var(--mc-surface) 68%,transparent);
  -webkit-backdrop-filter:blur(24px) saturate(1.6);backdrop-filter:blur(24px) saturate(1.6);
  border-bottom:1px solid var(--mc-outline-variant);
  animation:slideDown .6s ease both}
@keyframes slideDown{from{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}
.app-title{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:650;letter-spacing:1.5px}
.app-title .logo{width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--mc-primary),oklch(0.68 0.17 calc(var(--mc-hue) + 24)));
  color:var(--mc-on-primary);font-weight:800;font-size:17px;
  box-shadow:var(--mc-elev-1),inset 0 1px 0 rgba(255,255,255,.35)}
.app-nav{display:flex;gap:4px;align-items:center}
.app-nav a{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;
  color:var(--mc-on-surface-variant);text-decoration:none;font-size:13px;font-weight:550;
  transition:all .22s ease}
.app-nav a:hover{background:color-mix(in oklab,var(--mc-primary) 14%,transparent);color:var(--mc-on-surface)}
.app-nav a svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.app-status{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;
  background:color-mix(in oklab,var(--mc-primary) 12%,transparent);
  border:1px solid color-mix(in oklab,var(--mc-primary) 28%,transparent);
  font-size:12.5px;color:var(--mc-on-surface);font-weight:550}
.app-status .pulse{width:8px;height:8px;border-radius:50%;background:var(--mc-primary);
  box-shadow:0 0 0 0 color-mix(in oklab,var(--mc-primary) 55%,transparent);animation:ripple 2.4s ease-out infinite}
@keyframes ripple{0%{box-shadow:0 0 0 0 color-mix(in oklab,var(--mc-primary) 55%,transparent)}100%{box-shadow:0 0 0 9px transparent}}

.wrap{position:relative;z-index:2;flex:1;display:flex;align-items:center;justify-content:center;
  padding:96px 18px 40px}

/* ===== 主卡片：半透明毛玻璃 surface-container ===== */
.card{
  width:min(860px,100%);
  background:color-mix(in oklab,var(--mc-surface-container-high) 78%,transparent);
  -webkit-backdrop-filter:blur(28px) saturate(1.55) brightness(1.05);
  backdrop-filter:blur(28px) saturate(1.55) brightness(1.05);
  border:1px solid var(--mc-outline-variant);
  border-radius:var(--mc-radius-l);
  box-shadow:var(--mc-elev-3),inset 0 1px 0 rgba(255,255,255,.12);
  padding:54px 56px 38px;position:relative;overflow:hidden;
  animation:up .8s ease both}
.card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--mc-primary),oklch(0.7 0.16 calc(var(--mc-hue)+35)),transparent);
  opacity:.85}
.card::after{content:'';position:absolute;top:-55%;right:-12%;width:58%;height:220%;
  background:linear-gradient(115deg,transparent 22%,color-mix(in oklab,#fff 16%,transparent) 46%,transparent 62%,transparent 80%);
  transform:rotate(7deg);pointer-events:none;border-radius:26px}
@keyframes up{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:translateY(0)}}
.card:hover{box-shadow:var(--mc-elev-3),inset 0 1px 0 rgba(255,255,255,.14)}

/* M3 强调色条 */
.accent-bar{display:inline-block;width:4px;height:22px;border-radius:99px;vertical-align:-4px;margin-right:12px;
  background:linear-gradient(180deg,var(--mc-primary),oklch(0.6 0.14 calc(var(--mc-hue)+40)))}

/* 头像：M3 tonal avatar */
.avatar{width:112px;height:112px;border-radius:50%;margin:6px auto 22px;position:relative;
  display:flex;align-items:center;justify-content:center;
  background:color-mix(in oklab,var(--mc-primary) 16%,var(--mc-surface-container-high));
  box-shadow:var(--mc-elev-2),0 0 0 3px color-mix(in oklab,var(--mc-primary) 30%,transparent),0 0 38px color-mix(in oklab,var(--mc-primary) 35%,transparent);
  animation:up .8s .08s ease both;user-select:none}
.avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover;display:block}
.avatar::after{content:'';position:absolute;inset:-3px;border-radius:50%;
  border:1px solid color-mix(in oklab,#fff 20%,transparent);pointer-events:none}

h1{font-size:44px;font-weight:760;text-align:center;letter-spacing:7px;line-height:1.1;
  background:linear-gradient(135deg,var(--mc-on-surface) 20%,color-mix(in oklab,var(--mc-primary) 65%,var(--mc-on-surface)) 55%,var(--mc-primary) 90%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  animation:up .8s .12s ease both}
.slogan{text-align:center;font-size:19px;font-weight:620;margin:16px 0 10px;
  background:linear-gradient(90deg,var(--mc-on-surface),color-mix(in oklab,var(--mc-primary) 40%,var(--mc-on-surface)),var(--mc-on-surface));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  background-size:200% 100%;animation:up .9s .16s ease both,shineText 4s ease-in-out infinite}
@keyframes shineText{0%,100%{background-position:0% 50%}50%{background-position:100% 50%}}
.sub{text-align:center;font-size:14px;line-height:1.95;color:var(--mc-on-surface-variant);letter-spacing:1px;
  animation:up 1s .2s ease both}
.sub .dot{color:var(--mc-primary);margin:0 8px}

/* 快捷入口：M3 tonal button */
.links{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:30px;
  animation:up 1.1s .28s ease both}
.links a{display:inline-flex;align-items:center;gap:8px;padding:11px 24px;
  border-radius:999px;text-decoration:none;font-size:13.5px;font-weight:560;position:relative;overflow:hidden;
  color:var(--mc-on-surface);
  background:color-mix(in oklab,var(--mc-primary) 14%,transparent);
  border:1px solid color-mix(in oklab,var(--mc-primary) 30%,transparent);
  -webkit-backdrop-filter:blur(12px) saturate(1.3);backdrop-filter:blur(12px) saturate(1.3);
  transition:all .25s ease}
.links a:hover{background:color-mix(in oklab,var(--mc-primary) 26%,transparent);
  border-color:color-mix(in oklab,var(--mc-primary) 52%,transparent);
  transform:translateY(-2px);box-shadow:var(--mc-elev-1)}
.links .ico{display:inline-flex;align-items:center}
.links .ico svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* 状态行：M3 chip */
.meta{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:30px;
  animation:up 1.15s .32s ease both}
.meta span{display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;font-size:12.5px;letter-spacing:.4px;
  color:var(--mc-on-surface-variant);
  background:color-mix(in oklab,var(--mc-surface-container-high) 72%,transparent);
  border:1px solid var(--mc-outline-variant);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.meta b{color:var(--mc-primary);font-weight:650}
.meta i{width:7px;height:7px;border-radius:50%;background:var(--mc-primary);display:inline-block;
  box-shadow:0 0 10px color-mix(in oklab,var(--mc-primary) 80%,transparent);animation:pulse 2.2s ease infinite}
@keyframes pulse{0%,100%{opacity:.55}50%{opacity:1}}

footer{position:relative;z-index:2;text-align:center;padding:20px 0 26px;
  color:var(--mc-on-surface-variant);font-size:12.5px;letter-spacing:.5px}

@media(max-width:720px){
  .card{padding:42px 24px 30px}
  h1{font-size:35px;letter-spacing:5px}
  .slogan{font-size:16.5px}
  .links a{padding:10px 18px;font-size:12.5px}
  .app-nav a span{display:none}
  .top-app-bar{padding:10px 14px}
  .app-status{display:none}
}
/* ===== 过渡动画增强 ===== */
/* 主卡片 hover：浮起 + 流光边框 + 呼吸光晕 */
.card{
  transition:transform .45s cubic-bezier(.22,1,.36,1),box-shadow .45s ease,border-color .45s ease;
  will-change:transform}
.card:hover{
  transform:translateY(-6px);
  border-color:color-mix(in oklab,var(--mc-primary) 45%,transparent);
  box-shadow:0 30px 70px rgba(0,0,0,.5),0 0 40px color-mix(in oklab,var(--mc-primary) 18%,transparent),inset 0 1px 0 rgba(255,255,255,.16)}
/* 卡片顶部渐变线 hover 流光扫过 */
.card::before{transition:background-position .8s ease,opacity .4s ease}
.card:hover::before{background-size:200% 100%;background-position:100% 0;opacity:1}
.card:hover::after{animation:sheenMove 1.6s ease infinite}
@keyframes sheenMove{
  0%{transform:rotate(7deg) translateX(-160%)}
  60%,100%{transform:rotate(7deg) translateX(240%)}
}
/* 头像 hover：微微放大 + 呼吸光晕 */
.avatar{transition:transform .5s cubic-bezier(.22,1,.36,1),box-shadow .5s ease,filter .5s ease}
.avatar:hover{transform:scale(1.06);filter:saturate(1.12);
  box-shadow:var(--mc-elev-3),0 0 0 4px color-mix(in oklab,var(--mc-primary) 40%,transparent),0 0 60px color-mix(in oklab,var(--mc-primary) 50%,transparent)}
.avatar:hover img{animation:avatarPulse 2.2s ease-in-out infinite}
@keyframes avatarPulse{0%,100%{filter:brightness(1)}50%{filter:brightness(1.12)}}
/* 标题 hover：流光变色 */
h1{transition:filter .4s ease,transform .4s ease}
h1:hover{filter:brightness(1.15) saturate(1.1);transform:scale(1.02)}
/* slogan hover */
.slogan{transition:filter .4s ease}
.slogan:hover{filter:brightness(1.2)}
/* 链接按钮 hover：浮起 + 光斑扫过 */
.links a{transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s ease,background .3s ease,border-color .3s ease}
.links a:hover{transform:translateY(-4px) scale(1.03);
  box-shadow:0 12px 30px color-mix(in oklab,var(--mc-primary) 30%,transparent),inset 0 1px 0 rgba(255,255,255,.2)}
.links a::after{content:'';position:absolute;left:0;top:0;width:100%;height:100%;border-radius:999px;
  background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.18) 50%,transparent 70%);
  transform:translateX(-120%);pointer-events:none}
.links a:hover::after{animation:linkSweep .7s ease forwards}
@keyframes linkSweep{to{transform:translateX(120%)}}
.links a:active{transform:translateY(-1px) scale(.98)}
/* meta chips hover */
.meta span{transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease,background .3s ease}
.meta span:hover{transform:translateY(-2px);
  border-color:color-mix(in oklab,var(--mc-primary) 40%,transparent);
  box-shadow:0 6px 18px color-mix(in oklab,var(--mc-primary) 16%,transparent)}
/* top-app-bar hover */
.top-app-bar{transition:background .4s ease,box-shadow .4s ease}
.top-app-bar:hover{background:color-mix(in oklab,var(--mc-surface) 76%,transparent);
  box-shadow:0 6px 24px rgba(0,0,0,.3)}
/* 全局平滑过渡激活状态 */
body{transition:background .4s ease}
/* 懒加载式渐显出场的备用动画 */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

/* ===== 动态背景层 + 毛玻璃模糊开关（后台可切换） ===== */
#pg-bg{position:fixed;inset:-6%;z-index:0;pointer-events:none;opacity:0;transition:opacity .7s ease;
  background-position:center;background-size:cover;background-repeat:no-repeat}
#pg-bg.pg-on{opacity:1}
body.pg-blur #pg-bg{-webkit-filter:blur(22px) saturate(1.05) brightness(.82);filter:blur(22px) saturate(1.05) brightness(.82);transform:scale(1.05)}
body.pg-sharp #pg-bg{-webkit-filter:none;filter:none;transform:none}
/* 选了自定义背景时不再加载默认背景图 */
body.pg-wall{background-image:none!important}
/* 关闭模糊：取消所有 UI 的毛玻璃，界面浮于清晰背景之上 */
body.pg-sharp *{-webkit-backdrop-filter:none!important;backdrop-filter:none!important}
/* 首页：选择自定义背景后隐藏原高斯背景层 */
body.pg-wall .bg-gauss{display:none}
body.pg-sharp .card{background:color-mix(in oklab,var(--mc-surface-container-high) 60%,transparent)}