/* ===== HeiApi 全局样式 - 星空深空主题 ===== */
:root{
  --bg:#0a0e27; --bg2:#0f1438; --card:rgba(255,255,255,.05);
  --primary:#4fc3f7; --primary-d:#29b6f6; --accent:#9c27b0;
  --text:#e8eeff; --text2:#9aa5d6; --border:rgba(120,150,220,.18);
  --ok:#66bb6a; --warn:#ffa726; --err:#ef5350;
  --radius:14px; --shadow:0 8px 32px rgba(0,0,0,.35);
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg); color:var(--text); line-height:1.65;
  min-height:100vh; overflow-x:hidden; -webkit-font-smoothing:antialiased;
}
/* 星空背景 */
.starfield{position:fixed;inset:0;z-index:-2;overflow:hidden;
  background:radial-gradient(ellipse at 20% 0%,#1a1f4a 0%,var(--bg) 50%),
             radial-gradient(ellipse at 80% 100%,#2a1252 0%,transparent 60%),
             var(--bg);
}
.star{position:absolute;background:#fff;border-radius:50%;opacity:.6;
  animation:twinkle 4s ease-in-out infinite;}
@keyframes twinkle{0%,100%{opacity:.2}50%{opacity:.9}}
/* 流星 */
.shooting{position:absolute;width:2px;height:2px;background:#fff;border-radius:50%;
  box-shadow:0 0 6px #fff;animation:shoot 6s linear infinite;}
.shooting::after{content:'';position:absolute;top:0;left:0;width:80px;height:1px;
  background:linear-gradient(90deg,#fff,transparent);transform:translateX(-80px)}
@keyframes shoot{0%{transform:translate(0,0) rotate(-35deg);opacity:0}
  8%{opacity:1}20%{opacity:1}30%{transform:translate(700px,500px) rotate(-35deg);opacity:0}
  100%{opacity:0}}

a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-d)}

/* 布局容器 */
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.section{padding:70px 0}
.section-title{font-size:30px;font-weight:700;text-align:center;margin:0 0 12px;
  background:linear-gradient(120deg,var(--primary),var(--accent));-webkit-background-clip:text;
  background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:1px}
.section-sub{text-align:center;color:var(--text2);margin:0 0 40px;font-size:15px}

/* 顶部导航 */
.nav{position:sticky;top:0;z-index:50;background:rgba(10,14,39,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-size:20px;font-weight:800;letter-spacing:.5px;color:#fff}
.brand b{color:var(--primary)}
.nav-links{display:flex;gap:8px;align-items:center}
.nav-links a{color:var(--text2);padding:8px 14px;border-radius:8px;font-size:14px;transition:.2s}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:11px 22px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;
  border:none;transition:transform .15s,box-shadow .2s,background .2s;text-decoration:none}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(120deg,var(--primary),var(--accent));color:#fff;
  box-shadow:0 6px 20px rgba(79,195,247,.32)}
.btn-primary:hover{box-shadow:0 8px 28px rgba(79,195,247,.5);color:#fff}
.btn-ghost{background:rgba(255,255,255,.06);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-sm{padding:7px 14px;font-size:13px;border-radius:8px}
.btn-block{width:100%}

/* Hero 首屏 */
.hero{text-align:center;padding:90px 0 50px;position:relative}
.hero h1{font-size:54px;font-weight:800;margin:0 0 18px;letter-spacing:2px;
  background:linear-gradient(120deg,#fff 20%,var(--primary) 60%,var(--accent));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  animation:fadeUp .8s ease}
.hero p{font-size:17px;color:var(--text2);max-width:560px;margin:0 auto 36px;
  animation:fadeUp .8s ease .15s both}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;
  animation:fadeUp .8s ease .3s both}
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}

/* 套餐卡片网格 */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:transform .2s,border-color .2s,background .2s}
.card:hover{transform:translateY(-4px);border-color:rgba(79,195,247,.4);background:rgba(79,195,247,.05)}
.pkg-name{font-size:19px;font-weight:700;margin:0 0 6px;color:#fff}
.pkg-price{font-size:34px;font-weight:800;color:var(--primary);margin:8px 0}
.pkg-price small{font-size:14px;color:var(--text2);font-weight:400}
.pkg-desc{color:var(--text2);font-size:14px;min-height:42px;margin:8px 0 16px}
.pkg-meta{display:flex;justify-content:space-between;padding:8px 0;border-top:1px solid var(--border);font-size:13px;color:var(--text2)}
.pkg-meta b{color:var(--text)}

/* 模型滑入展示 */
.model-slider{overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.model-track{display:flex;gap:18px;width:max-content;animation:slideX 30s linear infinite}
.model-track:hover{animation-play-state:paused}
@keyframes slideX{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.model-chip{display:flex;align-items:center;gap:12px;padding:14px 22px;
  background:var(--card);border:1px solid var(--border);border-radius:12px;min-width:200px}
.model-icon{width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;color:#fff;flex-shrink:0;overflow:hidden}
.model-info b{display:block;font-size:15px;color:#fff}
.model-info small{color:var(--text2);font-size:12px}

/* 模型图标配色 */
.mi-gem{background:linear-gradient(135deg,#3b82f6,#8b5cf6)}
.mi-deepseek{background:linear-gradient(135deg,#1e88e5,#42a5f5)}
.mi-kimi{background:linear-gradient(135deg,#6a1b9a,#ab47bc)}
.mi-minimax{background:linear-gradient(135deg,#00897b,#26a69a)}
.mi-qwen{background:linear-gradient(135deg,#ef6c00,#fb8c00)}
.mi-default{background:linear-gradient(135deg,#5e35b1,#7e57c2)}

/* 表单 */
.form-wrap{max-width:420px;margin:50px auto}
.form-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:34px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:var(--shadow)}
.form-tabs{display:flex;gap:0;margin-bottom:24px;border-bottom:1px solid var(--border)}
.form-tab{flex:1;text-align:center;padding:12px;cursor:pointer;color:var(--text2);font-weight:600;
  border-bottom:2px solid transparent;transition:.2s}
.form-tab.active{color:var(--primary);border-color:var(--primary)}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;color:var(--text2);margin-bottom:6px}
.form-control{width:100%;padding:11px 14px;background:rgba(255,255,255,.04);
  border:1px solid var(--border);border-radius:9px;color:var(--text);font-size:15px;
  font-family:inherit;transition:border-color .2s,background .2s}
.form-control:focus{outline:none;border-color:var(--primary);background:rgba(79,195,247,.06)}
.form-control::placeholder{color:#5a6798}
.input-row{display:flex;gap:10px}
.input-row .form-control{flex:1}
.captcha-img{height:46px;border-radius:9px;cursor:pointer;border:1px solid var(--border)}
.form-foot{text-align:center;color:var(--text2);font-size:13px;margin-top:16px}
.form-msg{padding:10px 14px;border-radius:8px;font-size:13px;margin-bottom:14px}
.form-msg.err{background:rgba(239,83,80,.12);color:var(--err);border:1px solid rgba(239,83,80,.3)}
.form-msg.ok{background:rgba(102,187,106,.12);color:var(--ok);border:1px solid rgba(102,187,106,.3)}

/* 个人中心 */
.dash{display:grid;grid-template-columns:240px 1fr;gap:24px;margin:30px 0}
.dash-side{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;height:fit-content}
.dash-side a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:9px;
  color:var(--text2);font-size:14px;margin-bottom:4px;transition:.2s}
.dash-side a:hover{background:rgba(255,255,255,.06);color:var(--text)}
.dash-side a.active{background:linear-gradient(120deg,rgba(79,195,247,.18),rgba(156,39,176,.18));color:#fff}
.dash-main{min-width:0}
.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:22px}
.panel h3{margin:0 0 16px;font-size:18px;color:#fff;display:flex;align-items:center;justify-content:space-between}
.info-row{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;
  background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:9px;margin-bottom:10px;flex-wrap:wrap;gap:10px}
.info-row code{font-family:"SF Mono",Consolas,monospace;color:var(--primary);word-break:break-all}
.copy-btn{cursor:pointer;color:var(--text2);font-size:12px;padding:4px 10px;border:1px solid var(--border);border-radius:6px;transition:.2s}
.copy-btn:hover{color:var(--primary);border-color:var(--primary)}

/* 表格 */
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th{text-align:left;padding:12px 14px;color:var(--text2);font-weight:600;
  border-bottom:1px solid var(--border);font-size:13px}
.table td{padding:12px 14px;border-bottom:1px solid var(--border);color:var(--text)}
.table tr:hover td{background:rgba(255,255,255,.02)}
.tag{display:inline-block;padding:2px 9px;border-radius:5px;font-size:12px;font-weight:600}
.tag-ok{background:rgba(102,187,106,.16);color:var(--ok)}
.tag-warn{background:rgba(255,167,38,.16);color:var(--warn)}
.tag-err{background:rgba(239,83,80,.16);color:var(--err)}
.tag-info{background:rgba(79,195,247,.16);color:var(--primary)}

/* 后台 */
.admin-body{background:var(--bg);min-height:100vh}
.admin-wrap{display:flex;min-height:100vh}
.admin-side{width:220px;background:rgba(8,12,33,.9);border-right:1px solid var(--border);
  padding:18px 0;position:fixed;height:100vh;overflow-y:auto}
.admin-side .brand{padding:0 20px 18px;border-bottom:1px solid var(--border);margin-bottom:10px}
.admin-side a{display:block;padding:11px 20px;color:var(--text2);font-size:14px;transition:.2s;border-left:3px solid transparent}
.admin-side a:hover{background:rgba(255,255,255,.05);color:#fff}
.admin-side a.active{color:#fff;border-color:var(--primary);background:rgba(79,195,247,.08)}
.admin-main{flex:1;margin-left:220px;padding:26px}
.admin-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}
.admin-head h2{margin:0;font-size:22px;color:#fff}

/* 提示 */
.alert{padding:12px 16px;border-radius:9px;margin-bottom:16px;font-size:14px}
.alert-ok{background:rgba(102,187,106,.12);border:1px solid rgba(102,187,106,.3);color:var(--ok)}
.alert-err{background:rgba(239,83,80,.12);border:1px solid rgba(239,83,80,.3);color:var(--err)}

/* Toast */
.toast{position:fixed;top:24px;left:50%;transform:translateX(-50%) translateY(-80px);
  background:rgba(13,18,48,.95);border:1px solid var(--primary);color:#fff;padding:12px 22px;
  border-radius:10px;z-index:9999;transition:transform .3s;box-shadow:var(--shadow);font-size:14px}
.toast.show{transform:translateX(-50%) translateY(0)}

/* 页脚 */
.footer{padding:36px 0;text-align:center;color:var(--text2);font-size:13px;border-top:1px solid var(--border);margin-top:50px}

/* 滚动条 */
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:rgba(120,150,220,.3);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:rgba(120,150,220,.5)}

/* 响应式 */
@media(max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .dash{grid-template-columns:1fr}
  .dash-side{display:flex;flex-wrap:wrap;gap:6px}
  .dash-side a{flex:1;justify-content:center;min-width:90px}
}
@media(max-width:640px){
  .hero{padding:60px 0 40px}
  .hero h1{font-size:36px}
  .hero p{font-size:15px}
  .section{padding:48px 0}
  .section-title{font-size:24px}
  .grid-4,.grid-3{grid-template-columns:1fr}
  .nav-links a:not(.btn){display:none}
  .admin-wrap{display:block}
  .admin-side{position:static;width:100%;height:auto;display:flex;flex-wrap:wrap;overflow-x:auto}
  .admin-side .brand{border:0;padding:8px 16px;margin:0}
  .admin-side a{border:0;border-bottom:3px solid transparent;padding:8px 14px}
  .admin-main{margin-left:0;padding:18px}
  .form-card{padding:22px}
  .panel{padding:18px}
  .table{font-size:12px}
  .table th,.table td{padding:8px 6px}
}