*{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#4f46e5;--primary-light:#6366f1;--primary-lighter:#818cf8;--primary-bg:#eef2ff;
  --success:#059669;--success-bg:#d1fae5;--success-border:#a7f3d0;
  --danger:#dc2626;--danger-bg:#fee2e2;--danger-border:#fecaca;
  --warning:#d97706;--warning-bg:#fef3c7;
  --bg:#f8fafc;--bg-soft:#f1f5f9;--surface:#ffffff;
  --text:#0f172a;--text-secondary:#334155;--text-dim:#64748b;--text-muted:#94a3b8;
  --border:#e2e8f0;--border-light:#f1f5f9;--border-strong:#cbd5e1;
  --radius:12px;--radius-sm:8px;--radius-lg:20px;
  --shadow:0 4px 24px rgba(15,23,42,.06);--shadow-lg:0 12px 48px rgba(15,23,42,.1);
  --ease:cubic-bezier(.4,0,.2,1);
  /* === 全局渐变体系（高端会展科技风） === */
  --grad-brand:linear-gradient(135deg,#165DFF 0%,#722ED1 100%);
  --grad-brand-soft:linear-gradient(135deg,rgba(22,93,255,.12) 0%,rgba(114,46,209,.12) 100%);
  --grad-brand-hover:linear-gradient(135deg,#2E6FFF 0%,#8341E1 100%);
  --grad-aux:linear-gradient(135deg,#0FC6C2 0%,#27C9A5 100%);
  --grad-aux-soft:linear-gradient(135deg,rgba(15,198,194,.12) 0%,rgba(39,201,165,.12) 100%);
  --grad-bg:linear-gradient(180deg,#F5F7FA 0%,#E8F3FF 100%);
  --grad-bg-dark:linear-gradient(180deg,#0F172A 0%,#121212 100%);
  --grad-glow-1:radial-gradient(circle at 20% 20%,rgba(22,93,255,.10),transparent 50%);
  --grad-glow-2:radial-gradient(circle at 80% 80%,rgba(114,46,209,.08),transparent 50%);
  --grad-divider:linear-gradient(90deg,transparent,var(--border),transparent);
  --shadow-glow:0 8px 32px rgba(22,93,255,.18);
  --shadow-glow-lg:0 16px 48px rgba(22,93,255,.24);
  --shadow-card-hover:0 20px 48px rgba(15,23,42,.12);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);
}
/* 暗色主题：通过 [data-theme="dark"] 切换变量，所有组件自动适配 */
[data-theme="dark"]{
  --primary:#6366f1;--primary-light:#818cf8;--primary-lighter:#a5b4fc;--primary-bg:#1e1b4b;
  --success:#10b981;--success-bg:#064e3b;--success-border:#065f46;
  --danger:#ef4444;--danger-bg:#7f1d1d;--danger-border:#991b1b;
  --warning:#f59e0b;--warning-bg:#78350f;
  --bg:#0f172a;--bg-soft:#1e293b;--surface:#1e293b;
  --text:#f1f5f9;--text-secondary:#cbd5e1;--text-dim:#94a3b8;--text-muted:#64748b;
  --border:#334155;--border-light:#1e293b;--border-strong:#475569;
  --shadow:0 4px 24px rgba(0,0,0,.3);--shadow-lg:0 12px 48px rgba(0,0,0,.4);
  --grad-bg:linear-gradient(180deg,#0F172A 0%,#121212 100%);
  --grad-brand-soft:linear-gradient(135deg,rgba(22,93,255,.18) 0%,rgba(114,46,209,.18) 100%);
  --grad-aux-soft:linear-gradient(135deg,rgba(15,198,194,.18) 0%,rgba(39,201,165,.18) 100%);
  --grad-glow-1:radial-gradient(circle at 20% 20%,rgba(22,93,255,.16),transparent 50%);
  --grad-glow-2:radial-gradient(circle at 80% 80%,rgba(114,46,209,.12),transparent 50%);
}
[data-theme="dark"] body{color-scheme:dark}
[data-theme="dark"] .navbar{background:rgba(15,23,42,.85);border-bottom-color:var(--border)}
[data-theme="dark"] .form-input,[data-theme="dark"] .form-select,[data-theme="dark"] textarea{background:var(--bg-soft);border-color:var(--border);color:var(--text)}
[data-theme="dark"] .form-input::placeholder{color:var(--text-muted)}
[data-theme="dark"] .data-table{background:var(--surface)}
[data-theme="dark"] .data-table th{background:var(--bg-soft);color:var(--text);border-bottom-color:var(--border)}
[data-theme="dark"] .data-table td{border-bottom-color:var(--border)}
[data-theme="dark"] .data-table tr:hover td{background:var(--bg-soft)}
html,body{min-height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:var(--bg);background-image:var(--grad-bg);background-attachment:fixed;color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;overflow-y:auto}
a{text-decoration:none;color:inherit}button{cursor:pointer;font-family:inherit;border:none;background:none}input,select,textarea{font-family:inherit}

/* 全站氛围光斑（极低透明度，营造氛围感） */
body::before{content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;background:var(--grad-glow-1),var(--grad-glow-2);animation:ambientFlow 20s ease-in-out infinite alternate}
@keyframes ambientFlow{0%{opacity:.6;transform:translate3d(0,0,0)}100%{opacity:1;transform:translate3d(2%,-1%,0)}}

/* Navbar */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.6);backdrop-filter:blur(12px) saturate(180%);-webkit-backdrop-filter:blur(12px) saturate(180%);border-bottom:1px solid transparent;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;animation:slideDown .5s var(--ease);transition:background .3s var(--ease-out),border-color .3s var(--ease-out),box-shadow .3s var(--ease-out)}
.navbar.scrolled{background:rgba(255,255,255,.85);border-bottom-color:var(--border-light);box-shadow:0 1px 0 rgba(22,93,255,.06)}
[data-theme="dark"] .navbar.scrolled{background:rgba(15,23,42,.85)}
@keyframes slideDown{from{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--text);white-space:nowrap;padding-top:4px;position:relative}
.nav-logo-text{background:var(--grad-brand);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.5px}
.nav-logo-img{height:60px;width:auto;border-radius:8px;object-fit:contain;margin-top:4px}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-link{position:relative;padding:8px 16px;border-radius:20px;font-size:14px;font-weight:500;color:var(--text-secondary);transition:all .25s var(--ease-out);display:inline-flex;align-items:center;gap:6px;border:1.5px solid transparent;white-space:nowrap;overflow:hidden}
.nav-link::after{content:'';position:absolute;left:50%;bottom:2px;width:0;height:2px;background:var(--grad-brand);border-radius:2px;transform:translateX(-50%);transition:width .25s var(--ease-out)}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:60%}
.nav-btn{padding:8px 20px;border-radius:20px;font-size:14px;font-weight:600;transition:all .25s var(--ease-out);position:relative;overflow:hidden}
.nav-btn-primary{background:var(--grad-brand);color:white;box-shadow:0 4px 14px rgba(22,93,255,.25)}
.nav-btn-primary:hover{box-shadow:0 8px 24px rgba(22,93,255,.4);transform:translateY(-1px)}
.nav-btn-ghost{background:var(--surface);border:1.5px solid var(--border);color:var(--text-secondary)}
.nav-btn-ghost:hover{border-color:var(--primary);color:var(--primary)}

/* User menu */
.user-menu{position:relative;display:flex;align-items:center}
.user-btn{display:flex;align-items:center;gap:8px;padding:6px 14px 6px 6px;background:var(--surface);border:1.5px solid var(--border);border-radius:24px;cursor:pointer;transition:all .25s var(--ease)}
.user-btn:hover{border-color:var(--primary)}
.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--grad-brand);color:white;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;box-shadow:0 2px 8px rgba(22,93,255,.3)}
.user-name{font-size:14px;font-weight:500;color:var(--text)}
.user-arrow{font-size:10px;color:var(--text-dim);transition:transform .2s var(--ease)}
.user-dropdown{position:absolute;top:calc(100% + 8px);right:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:6px;min-width:180px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:all .2s var(--ease)}
.user-menu.open .user-dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.user-menu.open .user-arrow{transform:rotate(180deg)}
.dd-item{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:var(--radius-sm);font-size:14px;color:var(--text-secondary);transition:all .15s var(--ease);cursor:pointer}
.dd-item:hover{background:var(--primary-bg);color:var(--primary)}
.dd-divider{height:1px;background:var(--border-light);margin:4px 0}

/* Hero */
.hero{min-height:70vh;padding:120px 24px 80px;display:flex;align-items:center;justify-content:center;text-align:center;position:relative;overflow:hidden;background:linear-gradient(180deg,#0f0c29 0%,#1a1040 30%,#302b63 60%,#24243e 100%)}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 30% 20%,rgba(99,102,241,.15),transparent 50%),radial-gradient(ellipse at 70% 80%,rgba(139,92,246,.1),transparent 50%),radial-gradient(ellipse at 50% 50%,rgba(59,130,246,.08),transparent 60%);animation:heroGlow 8s ease-in-out infinite}
@keyframes heroGlow{0%,100%{opacity:.7}50%{opacity:1}}
.hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:150px;background:linear-gradient(to top,var(--bg),transparent);z-index:1;pointer-events:none}
#heroCanvas{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-particles{position:absolute;inset:0;z-index:0;pointer-events:none;background:url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='0.8' fill='rgba(255,255,255,0.06)'/%3E%3C/svg%3E");animation:drift 30s linear infinite}
@keyframes drift{0%{transform:translateY(0)}100%{transform:translateY(-60px)}}
.hero-content{max-width:750px;position:relative;z-index:2}
.hero-logo{margin-bottom:20px;display:flex;justify-content:center;align-items:center}
.hero-logo img{height:72px;width:72px;border-radius:20px;box-shadow:var(--shadow-lg)}
.hero-logo svg{width:72px;height:72px}
.hero h1{font-size:clamp(36px,7vw,64px);font-weight:800;letter-spacing:-1.5px;line-height:1.15;margin-bottom:20px;background:linear-gradient(135deg,#e0e7ff 0%,#a5b4fc 40%,#c4b5fd 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:fadeUp .8s var(--ease)}
.hero p{font-size:17px;color:rgba(255,255,255,.55);margin-bottom:32px;line-height:1.7;animation:fadeUp .8s var(--ease) .1s both}
.hero-buttons{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;animation:fadeUp .8s var(--ease) .2s both}
.hero .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));border:none;box-shadow:0 4px 20px rgba(79,70,229,.35)}
.hero .btn-primary:hover{box-shadow:0 8px 32px rgba(79,70,229,.5);transform:translateY(-3px)}
.hero .btn-secondary{background:rgba(255,255,255,.08);border:1.5px solid rgba(255,255,255,.15);color:rgba(255,255,255,.85);backdrop-filter:blur(8px)}
.hero .btn-secondary:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.3);color:#fff;transform:translateY(-3px)}
.hero-stats{display:flex;align-items:center;justify-content:center;gap:32px;margin-top:36px;padding:0 16px;animation:fadeUp .8s var(--ease) .3s both}
.hero-stat-item{text-align:center;min-width:0}
.hero-stat-num{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-1px;line-height:1;background:linear-gradient(135deg,#c7d2fe,#a5b4fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-stat-label{font-size:13px;color:rgba(255,255,255,.5);margin-top:8px;letter-spacing:1px;white-space:nowrap}
.hero-stat-divider{width:1px;height:48px;background:linear-gradient(to bottom,transparent,rgba(255,255,255,.2),transparent);flex-shrink:0}
@media (max-width:480px){.hero-stats{gap:12px 16px;margin-top:24px}.hero-stat-num{font-size:22px}.hero-stat-label{font-size:10px;letter-spacing:0}.hero-stat-item{min-width:70px}}
@media (max-width:360px){.hero-stats{gap:10px}.hero-stat-label{font-size:9px}.hero-stat-item{min-width:60px}.hero-stat-num{font-size:20px}}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* Buttons */
.btn-primary,.btn-secondary,.btn-danger,.btn-ghost,.btn-outline-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;transition:transform .25s var(--ease-out),box-shadow .25s var(--ease-out),background .25s var(--ease-out),border-color .25s var(--ease-out),color .25s var(--ease-out);border:1.5px solid transparent;position:relative;overflow:hidden}
.btn-primary{background:var(--grad-brand);color:white;box-shadow:0 4px 14px rgba(22,93,255,.22)}
.btn-primary:hover{background:var(--grad-brand-hover);transform:translateY(-2px) scale(1.02);box-shadow:0 8px 28px rgba(22,93,255,.4)}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-outline-primary{background:transparent;border:1.5px solid transparent;background-image:var(--grad-brand-soft);color:var(--primary);position:relative}
.btn-outline-primary::before{content:'';position:absolute;inset:0;border-radius:inherit;padding:1.5px;background:var(--grad-brand);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.btn-outline-primary:hover{background-image:var(--grad-brand);color:#fff;transform:translateY(-2px);box-shadow:0 6px 20px rgba(22,93,255,.3)}
.btn-secondary{background:var(--surface);border-color:var(--border);color:var(--text)}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-danger{background:linear-gradient(135deg,#EF4444 0%,#DC2626 100%);color:white;box-shadow:0 4px 14px rgba(220,38,38,.22)}
.btn-danger:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(220,38,38,.4)}
.btn-ghost{color:var(--text-dim)}
.btn-ghost:hover{color:var(--danger)}
.btn-sm{padding:6px 14px;font-size:13px;border-radius:6px}
.btn-loading{opacity:.7;cursor:wait;pointer-events:none}
.btn:disabled{opacity:.6;cursor:not-allowed}
/* 按钮波纹点击反馈 */
.btn-primary::after,.btn-danger::after,.nav-btn-primary::after{content:'';position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:rgba(255,255,255,.4);transform:translate(-50%,-50%);transition:width .5s var(--ease-out),height .5s var(--ease-out),opacity .5s var(--ease-out);opacity:0;pointer-events:none}
.btn-primary:active::after,.btn-danger:active::after,.nav-btn-primary:active::after{width:300px;height:300px;opacity:1;transition:0s}

/* Sections */
.section{padding:60px 24px;max-width:1200px;margin:0 auto}
.section-label{font-size:12px;font-weight:700;letter-spacing:3px;color:transparent;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;text-transform:uppercase;margin-bottom:8px;display:inline-block}
.section-title{font-size:clamp(24px,4vw,36px);font-weight:800;letter-spacing:-1px;margin-bottom:8px}
.section-subtitle{color:var(--text-dim);margin-bottom:40px;font-size:15px}

/* Events grid */
.events-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.event-card{background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:transform .3s var(--ease-out),box-shadow .3s var(--ease-out);cursor:pointer;border:1px solid var(--border-light);position:relative}
.event-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);z-index:2;opacity:.9}
.event-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover)}
.event-image{position:relative;height:200px;overflow:hidden;background:var(--grad-brand-soft);display:flex;align-items:center;justify-content:center}
.event-image img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease-out)}
.event-card:hover .event-image img{transform:scale(1.06)}
.event-image::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 60%,rgba(15,23,42,.25) 100%);pointer-events:none}
.event-image-placeholder{display:flex;align-items:center;justify-content:center;width:100%;height:100%;background:#f1f5f9}
.event-status{position:absolute;top:12px;left:12px;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600;backdrop-filter:blur(8px)}
.event-status.ongoing{background:var(--grad-brand);color:white;box-shadow:0 2px 8px rgba(22,93,255,.4)}
.event-status.ended{background:rgba(148,163,184,.9);color:white}
/* 系统介绍 - 核心数据条 */
.about-metrics{display:flex;align-items:stretch;justify-content:center;gap:0;margin-bottom:36px;background:linear-gradient(135deg,var(--surface) 0%,var(--bg) 100%);border-radius:var(--radius-lg);padding:32px 24px;box-shadow:var(--shadow);border:1px solid var(--border-light);position:relative;overflow:hidden}
.about-metrics::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand)}
.about-metric{flex:1;text-align:center;padding:0 12px}
.about-metric-num{font-size:34px;font-weight:800;background:var(--grad-brand);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-1.5px;line-height:1.1}
.about-metric-num small{font-size:17px;font-weight:700}
.about-metric-label{font-size:13px;color:var(--text-dim);margin-top:6px;letter-spacing:1.5px;font-weight:500}
.about-metric-divider{width:1px;background:linear-gradient(180deg,transparent 0%,var(--border-light) 50%,transparent 100%);margin:4px 0;align-self:stretch}
/* 系统简介卡片 */
.company-card{background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border-light);position:relative;margin-bottom:36px}
.company-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand)}
.company-body{padding:36px 32px}
.company-intro{font-size:15px;line-height:2;color:var(--text-dim);margin-bottom:28px;text-align:justify}
.company-features{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.company-feature{display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:var(--radius);background:var(--bg);border:1px solid var(--border-light);transition:transform .25s var(--ease-out)}
.company-feature:hover{transform:translateY(-2px)}
.cf-dot{width:8px;height:8px;border-radius:50%;background:var(--grad-brand);flex-shrink:0;margin-top:6px;box-shadow:0 2px 6px rgba(22,93,255,.3)}
.cf-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:3px}
.cf-desc{font-size:12.5px;line-height:1.55;color:var(--text-dim)}
/* 功能矩阵 */
.about-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px}
.about-card{background:var(--surface);border-radius:var(--radius-lg);padding:28px 24px;box-shadow:var(--shadow);border:1px solid var(--border-light);transition:transform .3s var(--ease-out),box-shadow .3s var(--ease-out);position:relative;overflow:hidden}
.about-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);opacity:0;transition:opacity .3s var(--ease-out)}
.about-card::after{content:'';position:absolute;bottom:0;right:0;width:100px;height:100px;background:radial-gradient(circle,rgba(22,93,255,.04) 0%,transparent 70%);pointer-events:none}
.about-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover)}
.about-card:hover::before{opacity:1}
.about-icon{width:36px;height:36px;border-radius:10px;background:var(--grad-brand-soft);color:var(--primary);font-size:16px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.about-h3{font-size:17px;font-weight:700;margin-bottom:10px;color:var(--text)}
.about-p{font-size:13.5px;line-height:1.75;color:var(--text-dim);margin-bottom:14px}
.about-tags{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px}
.about-tags li{font-size:12px;padding:3px 12px;border-radius:20px;background:var(--grad-brand-soft);color:var(--primary);font-weight:600}
/* 服务流程 */
.guide-steps{display:flex;align-items:stretch;gap:12px;margin-bottom:36px}
.guide-step{flex:1;display:flex;flex-direction:column;align-items:center;text-align:center;padding:28px 14px;background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border-light);box-shadow:var(--shadow);position:relative;overflow:visible;transition:transform .3s var(--ease-out),box-shadow .3s var(--ease-out)}
.guide-step::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);opacity:0;transition:opacity .3s var(--ease-out)}
.guide-step::after{content:'';position:absolute;bottom:0;right:0;width:80px;height:80px;background:radial-gradient(circle,rgba(22,93,255,.04) 0%,transparent 70%);pointer-events:none}
.guide-step:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover)}
.guide-step:hover::before{opacity:1}
.gs-num{width:44px;height:44px;border-radius:50%;background:var(--grad-brand);color:white;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:16px;box-shadow:0 4px 14px rgba(22,93,255,.3);position:relative;z-index:1}
.gs-body{flex:1;position:relative;z-index:1}
.gs-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:6px}
.gs-desc{font-size:13px;line-height:1.65;color:var(--text-dim)}
.gs-arrow{position:absolute;right:-18px;top:50%;transform:translateY(-50%);font-size:18px;color:var(--primary);opacity:.35;z-index:2;background:var(--bg);width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700}
/* 常见问题 */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius);margin-bottom:8px;overflow:hidden;transition:box-shadow .3s var(--ease-out),border-color .3s var(--ease-out)}
.faq-item:hover{box-shadow:var(--shadow);border-color:var(--primary-lighter)}
.faq-item.open{border-color:var(--primary-lighter);box-shadow:0 4px 16px rgba(22,93,255,.08)}
.faq-q{padding:18px 22px;font-size:15px;font-weight:600;color:var(--text);cursor:pointer;display:flex;justify-content:space-between;align-items:center;user-select:none;transition:color .2s var(--ease-out)}
.faq-q:hover{color:var(--primary)}
.faq-icon{font-size:22px;color:var(--primary);transition:transform .3s var(--ease-out);font-weight:300;flex-shrink:0;margin-left:12px}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease-out);font-size:14px;line-height:1.75;color:var(--text-dim);padding:0 22px}
.faq-item.open .faq-a{max-height:300px;padding:0 22px 18px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
/* 安全保障 */
.security-section{margin-top:44px}
.security-card{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border-light);box-shadow:var(--shadow);overflow:hidden;position:relative}
.security-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand)}
.security-head{display:flex;align-items:center;gap:10px;margin-bottom:22px;padding:28px 28px 0}
.security-h3{font-size:18px;font-weight:700;color:var(--text)}
.security-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1px;padding:0;background:var(--border-light)}
.security-item{background:var(--surface);padding:22px 20px;transition:transform .25s var(--ease-out),background .25s var(--ease-out);position:relative}
.security-item:hover{background:var(--bg)}
.si-num{font-size:13px;font-weight:800;color:var(--primary);opacity:.25;letter-spacing:1.5px;margin-bottom:8px}
.si-title{font-size:15px;font-weight:700;color:var(--text);margin-bottom:6px}
.si-desc{font-size:12.5px;line-height:1.65;color:var(--text-dim)}
/* 激活码管理：活动选择卡片 */
.event-pick-card{position:relative;overflow:hidden}
.event-pick-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad-brand);opacity:0;transition:opacity .25s var(--ease-out)}
.event-pick-card:hover{border-color:transparent!important;box-shadow:0 8px 24px rgba(22,93,255,.18);transform:translateY(-4px)}
.event-pick-card:hover::before{opacity:1}
.event-pick-card:active{transform:translateY(-2px)}
.event-body{padding:20px}
.event-name{font-size:18px;font-weight:700;margin-bottom:8px;line-height:1.4}
.event-meta{display:flex;flex-direction:column;gap:4px}
.event-meta-item{font-size:13px;color:var(--text-dim);display:flex;align-items:center;gap:6px}

/* Auth pages */
.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--grad-bg);position:relative;overflow:hidden}
.auth-page::before{content:'';position:absolute;inset:0;background:var(--grad-glow-1),var(--grad-glow-2);animation:ambientFlow 18s ease-in-out infinite alternate;pointer-events:none}
.auth-card{background:var(--surface);border-radius:var(--radius-lg);padding:40px;width:100%;max-width:420px;box-shadow:var(--shadow-glow-lg);position:relative;animation:fadeUp .5s var(--ease-out);backdrop-filter:blur(20px)}
.back-link{position:absolute;top:20px;left:20px;font-size:13px;color:var(--text-dim);transition:color .2s}
.back-link:hover{color:var(--primary)}
.auth-logo{text-align:center;margin-bottom:20px}
.auth-logo img{height:56px;width:56px;border-radius:14px}
.auth-logo svg{width:56px;height:56px}
.auth-title{font-size:26px;font-weight:800;text-align:center;letter-spacing:-.5px;margin-bottom:6px}
.auth-subtitle{text-align:center;color:var(--text-dim);font-size:14px;margin-bottom:28px}
.auth-link{text-align:center;margin-top:16px;font-size:14px}
.auth-link a{color:var(--primary);font-weight:500}
.auth-link a:hover{text-decoration:underline}

/* Form elements */
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:6px}
.form-input,.form-select,.form-textarea{width:100%;padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:14px;transition:border-color .25s var(--ease-out),box-shadow .25s var(--ease-out);background:var(--surface);color:var(--text);outline:none}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(22,93,255,.12)}
.form-textarea{resize:vertical;min-height:80px}
.form-btn{width:100%;margin-top:8px}

/* Activate & Query pages */
.activate-page,.query-page{min-height:100vh;background:var(--grad-bg);padding:0 16px 40px;position:relative;overflow-x:hidden}
.activate-page::before,.query-page::before{content:'';position:fixed;inset:0;z-index:0;pointer-events:none;background:var(--grad-glow-1),var(--grad-glow-2);animation:ambientFlow 18s ease-in-out infinite alternate}
.activate-page #bgCanvas,.query-page #bgCanvas{position:fixed;inset:0;z-index:0;pointer-events:none}
.activate-container,.query-container{max-width:480px;margin:0 auto;position:relative;z-index:1}
.activate-header,.query-header{text-align:center;padding:40px 0 20px}
.activate-header h1,.query-header h1{font-size:28px;font-weight:800;margin-bottom:8px}
.activate-header p,.query-header p{color:var(--text-dim);font-size:14px}
.steps{display:flex;align-items:flex-start;justify-content:center;gap:0;margin-bottom:28px;position:relative}
.step-wrap{display:flex;flex-direction:column;align-items:center;gap:6px}
.step{width:40px;height:40px;border-radius:50%;background:var(--border);color:var(--text-dim);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;transition:all .4s var(--ease);flex-shrink:0;position:relative}
.step::after{content:'';position:absolute;inset:-4px;border-radius:50%;border:2px solid var(--primary);opacity:0;transform:scale(.8);transition:all .4s var(--ease)}
.step.active{background:var(--grad-brand);color:white;transform:scale(1.15);box-shadow:0 6px 20px rgba(22,93,255,.4)}
.step.active::after{opacity:.3;transform:scale(1.15);animation:stepPulse 1.8s ease-in-out infinite}
.step.done{background:var(--grad-aux);color:white}
.step.done::before{content:'✓';font-size:18px}
.step-label{font-size:12px;color:var(--text-dim);font-weight:500;transition:color .3s}
.step-wrap.active .step-label{color:var(--primary);font-weight:600}
.step-wrap.done .step-label{color:var(--success)}
.step-line{flex:1;height:3px;background:var(--border);max-width:50px;min-width:30px;transition:background .4s var(--ease-out);margin-top:18px;border-radius:2px;position:relative;overflow:hidden}
.step-line.done{background:var(--grad-aux)}
.step-line.done::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);animation:lineShine 1.2s ease-out}
@keyframes stepPulse{0%,100%{transform:scale(1.15);opacity:.3}50%{transform:scale(1.35);opacity:0}}
@keyframes lineShine{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.activate-card{background:var(--surface);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-lg);overflow:hidden;position:relative}
.step-content{display:none;opacity:0;transform:translateX(30px)}
.step-content.active{display:block;animation:stepSlideIn .5s var(--ease) forwards}
@keyframes stepSlideIn{from{opacity:0;transform:translateX(30px)}to{opacity:1;transform:translateX(0)}}
.notice-box{margin-top:16px;padding:14px;background:var(--warning-bg);border-radius:var(--radius-sm);font-size:12px;color:var(--warning);line-height:1.7}

.query-tabs{display:flex;gap:0;margin-bottom:20px;background:var(--bg-soft);border-radius:var(--radius-sm);padding:4px}
.query-tab{flex:1;text-align:center;padding:10px;border-radius:6px;font-size:14px;font-weight:500;color:var(--text-dim);cursor:pointer;transition:all .2s var(--ease)}
.query-tab.active{background:var(--surface);color:var(--primary);box-shadow:0 2px 12px rgba(22,93,255,.12)}

/* Security card / Ticket result */
.ticket-result{margin-top:24px}

/* 票证选择列表（多张票证时先选择再显示二维码） */
.ticket-select-header{text-align:center;margin:24px 0 16px}
.ticket-select-header h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:4px}
.ticket-select-header p{font-size:13px;color:var(--text-dim)}
.ticket-select-list{display:flex;flex-direction:column;gap:12px;margin-bottom:24px}
.ticket-card{position:relative;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;cursor:pointer;transition:transform .3s var(--ease-out),box-shadow .3s var(--ease-out);border:1px solid var(--border-light)}
.ticket-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover)}
.ticket-card-bar{position:absolute;top:0;left:0;bottom:0;width:4px;background:var(--grad-brand)}
.ticket-card-body{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 18px 16px 22px}
.ticket-card-main{flex:1;min-width:0}
.ticket-card-type{font-size:12px;font-weight:700;letter-spacing:1px;margin-bottom:4px}
.ticket-card-event{font-size:15px;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:3px}
.ticket-card-date{font-size:12px;color:var(--text-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ticket-card-side{display:flex;align-items:center;gap:10px;flex-shrink:0}
.ticket-card-status{font-size:11px;font-weight:700;padding:4px 10px;border-radius:12px;letter-spacing:1px;white-space:nowrap}
.ticket-card-status.st-normal{background:#dcfce7;color:#16a34a}
.ticket-card-status.st-used{background:#f1f5f9;color:#64748b}
.ticket-card-status.st-disabled{background:#f1f5f9;color:#475569}
.ticket-card-status.st-blacklist{background:#ede9fe;color:#7c3aed}
.ticket-card-status.st-expired{background:#fef3c7;color:#d97706}
.ticket-card-arrow{color:var(--text-muted);font-size:22px;font-weight:300;line-height:1}
.ticket-back-btn{display:inline-flex;align-items:center;gap:4px;margin:8px 0 12px;padding:7px 14px;background:var(--bg-soft);color:var(--primary);border:none;border-radius:18px;font-size:13px;font-weight:600;cursor:pointer;transition:background .2s}
.ticket-back-btn:hover{background:var(--primary-bg)}
.security-card{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden;position:relative}
.security-card-header{background:var(--grad-brand);color:white;padding:24px 24px 20px;position:relative;overflow:hidden}
.security-card-header::before{content:'';position:absolute;top:-50%;right:-20%;width:60%;height:200%;background:radial-gradient(ellipse,rgba(255,255,255,.15),transparent 70%);animation:headerShine 6s ease-in-out infinite;pointer-events:none}
@keyframes headerShine{0%,100%{transform:translate(0,0)}50%{transform:translate(-10%,5%)}}
.security-wm{position:absolute;top:-6px;right:-10px;font-size:56px;font-weight:900;color:rgba(255,255,255,.1);transform:rotate(-15deg);pointer-events:none;user-select:none;white-space:nowrap}
.sc-type{font-size:18px;font-weight:700;letter-spacing:3px;opacity:.95;margin-bottom:6px;position:relative}
.sc-event{font-size:20px;font-weight:700;margin-bottom:4px;position:relative}
.sc-date{font-size:13px;opacity:.8;position:relative}
.security-card-body{padding:24px;display:flex;gap:24px;align-items:center}
.sc-qr{flex-shrink:0;padding:12px;border:2px solid var(--border-light);border-radius:var(--radius-sm)}
.sc-qr img{display:block;border-radius:4px}
.sc-info{flex:1;min-width:0}
.sc-name{font-size:22px;font-weight:800;margin-bottom:4px}
.sc-phone{font-size:14px;color:var(--text-dim);margin-bottom:4px}
.sc-code{font-size:12px;color:var(--text-muted);font-family:monospace}
.security-warning{padding:12px 24px;background:var(--danger-bg);color:var(--danger);font-size:12px;font-weight:500;text-align:center}
.security-footer{padding:12px 24px;border-top:1px solid var(--border-light);display:flex;justify-content:space-between;font-size:11px;color:var(--text-muted)}

/* Anti-counterfeit QR watermark（一次性动态二维码 + 防伪水印） */
.qr-shield{position:relative;display:inline-block;padding:8px;background:#fff;border-radius:12px;box-shadow:0 4px 24px rgba(15,23,42,.08)}
.qr-shield img{display:block;border-radius:6px}
/* 四角防伪标记 */
.qr-corner{position:absolute;width:14px;height:14px;border:2px solid currentColor;pointer-events:none}
.qr-corner.tl{top:4px;left:4px;border-right:none;border-bottom:none;border-radius:4px 0 0 0}
.qr-corner.tr{top:4px;right:4px;border-left:none;border-bottom:none;border-radius:0 4px 0 0}
.qr-corner.bl{bottom:4px;left:4px;border-right:none;border-top:none;border-radius:0 0 0 4px}
.qr-corner.br{bottom:4px;right:4px;border-left:none;border-top:none;border-radius:0 0 4px 0}
/* 动态水印文字（持票人+票号） */
.qr-wm{position:absolute;top:0;left:0;width:100%;height:100%;overflow:hidden;pointer-events:none;border-radius:6px}
.qr-wm-text{position:absolute;font-size:11px;font-weight:700;color:rgba(79,70,229,.32);white-space:nowrap;text-shadow:0 0 2px rgba(255,255,255,.6);animation:qrWmBounce 4s ease-in-out infinite}
.qr-wm-text:nth-child(2){animation-delay:1.3s;color:rgba(220,38,38,.26);font-size:10px}
.qr-wm-text:nth-child(3){animation-delay:2.6s;color:rgba(5,150,105,.26);font-size:10px}
@keyframes qrWmBounce{0%,100%{top:18%;left:12%;transform:rotate(-8deg)}25%{top:62%;left:52%;transform:rotate(6deg)}50%{top:42%;left:22%;transform:rotate(-4deg)}75%{top:68%;left:42%;transform:rotate(10deg)}}
/* 倒计时与刷新指示器 */
.qr-time{margin-top:10px;font-size:12px;color:var(--text-dim);font-variant-numeric:tabular-nums;text-align:center;letter-spacing:.5px;display:flex;align-items:center;justify-content:center;gap:8px}
.qr-invalid-warn{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;background:#fee2e2;border-radius:12px;font-weight:700;color:#dc2626;font-size:11px;letter-spacing:1px}
@keyframes qrPulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.8)}}
.qr-refreshing{position:absolute;inset:0;background:rgba(255,255,255,.7);display:flex;align-items:center;justify-content:center;border-radius:6px;backdrop-filter:blur(2px);opacity:0;pointer-events:none;transition:opacity .2s}
.qr-refreshing.show{opacity:1}
.qr-refreshing svg{width:28px;height:28px;animation:qrSpin 1s linear infinite}
/* 防截图警告遮罩 */
.qr-screenshot-warn{position:absolute;inset:0;background:rgba(15,23,42,.88);display:none;align-items:center;justify-content:center;text-align:center;font-size:14px;font-weight:700;color:#fff;border-radius:6px;z-index:10;line-height:2;backdrop-filter:blur(8px)}
/* 打印时隐藏二维码 */
@media print{.qr-shield,.qr-time{display:none!important}}
@keyframes qrSpin{to{transform:rotate(360deg)}}

/* Dashboard */
.dashboard{display:flex;min-height:100vh}
.sidebar{width:240px;background:var(--surface);background-image:linear-gradient(180deg,var(--surface) 0%,rgba(245,247,250,.6) 100%);border-right:1px solid var(--border);padding:20px 0;position:fixed;top:0;left:0;bottom:0;overflow-y:auto;z-index:50;transition:transform .3s var(--ease-out)}
[data-theme="dark"] .sidebar{background-image:linear-gradient(180deg,var(--surface) 0%,rgba(15,23,42,.6) 100%)}
.sb-logo{padding:8px 20px 24px;display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;white-space:nowrap;overflow:hidden;position:relative}
.sb-logo::after{content:'';position:absolute;left:20px;right:20px;bottom:14px;height:1px;background:var(--grad-divider)}
.sidebar-nav{display:flex;flex-direction:column;gap:2px;padding:0 12px}
.sidebar-nav a{position:relative;display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:var(--radius-sm);font-size:14px;color:var(--text-secondary);font-weight:500;transition:color .25s var(--ease-out),background .25s var(--ease-out);overflow:hidden}
.sidebar-nav a::before{content:'';position:absolute;left:0;top:50%;width:3px;height:0;background:var(--grad-brand);border-radius:0 3px 3px 0;transform:translateY(-50%);transition:height .25s var(--ease-out)}
.sidebar-nav a:hover{background:var(--bg-soft);color:var(--text)}
.sidebar-nav a.active{background:var(--grad-brand-soft);color:var(--primary);font-weight:600}
.sidebar-nav a.active::before{height:60%}
.nav-icon{width:20px;text-align:center;font-size:14px;flex-shrink:0}
.sidebar-footer{padding:20px 12px 0;border-top:1px solid var(--border-light);margin-top:20px}
.sidebar-footer button{width:100%;justify-content:flex-start;padding:10px 14px;border-radius:var(--radius-sm);font-size:14px;color:var(--text-dim);transition:background .25s var(--ease-out),color .25s var(--ease-out)}
.sidebar-footer button:hover{background:var(--danger-bg);color:var(--danger)}
.main-area{margin-left:240px;flex:1;min-height:100vh}
.top-bar{height:64px;border-bottom:1px solid var(--border-light);padding:0 24px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;background:rgba(255,255,255,.8);backdrop-filter:blur(12px);z-index:40;transition:box-shadow .3s var(--ease-out)}
[data-theme="dark"] .top-bar{background:rgba(15,23,42,.8)}
.tb-title{font-size:18px;font-weight:700;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.tb-back{font-size:13px;color:var(--text-dim);transition:color .2s}
.tb-back:hover{color:var(--primary)}
.content{padding:24px}
.section-block{display:none;animation:sectionIn .4s var(--ease-out)}
.section-block.active{display:block}
@keyframes sectionIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* Stat cards */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:32px}
.stat-card{position:relative;background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius);padding:20px;transition:transform .3s var(--ease-out),box-shadow .3s var(--ease-out);overflow:hidden}
.stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);opacity:0;transition:opacity .3s var(--ease-out)}
.stat-card:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px)}
.stat-card:hover::before{opacity:1}
.stat-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:12px;background:var(--grad-brand-soft);color:var(--primary)}
.stat-value{font-size:28px;font-weight:800;letter-spacing:-1px;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{font-size:13px;color:var(--text-dim);margin-top:2px}

/* Tables */
.table-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border-light);overflow:hidden;transition:box-shadow .3s var(--ease-out)}
.table-card:hover{box-shadow:var(--shadow)}
.table-header{padding:16px 20px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;background:linear-gradient(180deg,var(--surface),rgba(245,247,250,.4))}
[data-theme="dark"] .table-header{background:linear-gradient(180deg,var(--surface),rgba(30,41,59,.4))}
.table-header h3{font-size:16px;font-weight:700}
.table-actions{display:flex;gap:8px;flex-wrap:wrap}
.data-table{width:100%;border-collapse:collapse;font-size:14px}
.data-table th,.data-table td{padding:12px 20px;text-align:left;border-bottom:1px solid var(--border-light)}
.data-table th{background:var(--bg-soft);font-weight:600;font-size:13px;color:var(--text-secondary);padding:12px 20px;text-align:left;border-bottom:1px solid var(--border-light);position:sticky;top:0}
.data-table tr:last-child td{border-bottom:none}
.data-table tr{transition:background .2s var(--ease-out)}
.data-table tr:hover td{background:var(--bg-soft)}
.badge{display:inline-block;padding:2px 10px;border-radius:20px;font-size:12px;font-weight:600}
.badge-success{background:var(--grad-aux-soft);color:#0EA5A1}
.badge-danger{background:var(--danger-bg);color:var(--danger)}
.badge-warning{background:var(--warning-bg);color:var(--warning)}
.badge-info{background:var(--primary-bg);color:var(--primary)}
.badge-muted{background:var(--bg-soft);color:var(--text-dim)}
.table-wrap{overflow-x:auto}
.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}
.empty-state p:first-child{font-size:16px;color:var(--text-dim);margin-bottom:4px}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(15,23,42,.4);backdrop-filter:blur(8px);z-index:200;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;visibility:hidden;transition:opacity .25s var(--ease-out),visibility .25s var(--ease-out)}
.modal-overlay.show{opacity:1;visibility:visible}
.modal{background:var(--surface);border-radius:var(--radius-lg);width:100%;max-width:520px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-glow-lg);transform:translateY(20px) scale(.96);transition:transform .3s var(--ease-spring)}
.modal-overlay.show .modal{transform:translateY(0) scale(1)}
.modal-header{padding:20px 24px 16px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}
.modal-header h3{font-size:18px;font-weight:700;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.modal-close{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--text-dim);transition:background .2s var(--ease-out),color .2s var(--ease-out),transform .2s var(--ease-out)}
.modal-close:hover{background:var(--bg-soft);color:var(--text);transform:rotate(90deg)}
.modal-body{padding:20px 24px}
.modal-footer{padding:16px 24px;border-top:1px solid var(--border-light);display:flex;justify-content:flex-end;gap:8px}

/* Toast */
.toast{position:fixed;top:80px;left:50%;transform:translateX(-50%) translateY(-20px);padding:12px 24px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;z-index:300;opacity:0;visibility:hidden;transition:transform .3s var(--ease-spring),opacity .3s var(--ease-out),visibility .3s var(--ease-out);pointer-events:none;box-shadow:var(--shadow-glow-lg)}
.toast.show{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.toast.success{background:var(--grad-aux);color:white}
.toast.error{background:linear-gradient(135deg,#EF4444 0%,#DC2626 100%);color:white}
/* 返回顶部浮窗 */
.back-to-top{position:fixed;right:24px;bottom:32px;width:44px;height:44px;border-radius:50%;background:var(--grad-brand);color:white;font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:200;opacity:0;visibility:hidden;transform:translateY(20px) scale(.8);transition:opacity .3s var(--ease-out),transform .3s var(--ease-spring),visibility .3s;box-shadow:0 4px 16px rgba(22,93,255,.35);user-select:none}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.back-to-top:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 6px 24px rgba(22,93,255,.5)}
.back-to-top:active{transform:translateY(-1px) scale(1)}

/* Confirm dialog */
.confirm-overlay{position:fixed;inset:0;background:rgba(15,23,42,.4);backdrop-filter:blur(8px);z-index:250;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;visibility:hidden;transition:opacity .2s var(--ease-out),visibility .2s var(--ease-out)}
.confirm-overlay.show{opacity:1;visibility:visible}
.confirm-box{background:var(--surface);border-radius:var(--radius);padding:24px;max-width:380px;width:100%;box-shadow:var(--shadow-glow-lg);transform:scale(.96);transition:transform .25s var(--ease-spring)}
.confirm-overlay.show .confirm-box{transform:scale(1)}
.confirm-box h4{font-size:16px;font-weight:700;margin-bottom:8px}
.confirm-box p{font-size:14px;color:var(--text-dim);margin-bottom:20px}
.confirm-actions{display:flex;gap:8px;justify-content:flex-end}

/* Image upload */
.img-upload-area{border:2px dashed var(--border);border-radius:var(--radius-sm);padding:24px;text-align:center;cursor:pointer;transition:border-color .25s var(--ease-out),background .25s var(--ease-out),color .25s var(--ease-out);color:var(--text-dim);font-size:14px;position:relative}
.img-upload-area:hover{border-color:transparent;background-image:var(--grad-brand-soft);color:var(--primary)}
.img-upload-area:hover::after{content:'';position:absolute;inset:0;border-radius:inherit;padding:2px;background:var(--grad-brand);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.img-preview{margin-top:12px;text-align:center}
.img-preview img{max-width:200px;max-height:120px;border-radius:var(--radius-sm);border:1px solid var(--border)}
.switch-toggle{position:relative;display:inline-block;width:42px;height:24px;flex-shrink:0;cursor:pointer}
.switch-toggle input{opacity:0;width:0;height:0;position:absolute}
.switch-slider{position:absolute;inset:0;background:var(--border);border-radius:24px;transition:background .25s var(--ease-out)}
.switch-slider::before{content:"";position:absolute;left:3px;top:3px;width:18px;height:18px;background:#fff;border-radius:50%;transition:transform .25s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.switch-toggle input:checked + .switch-slider{background:var(--primary);background-image:var(--grad-brand)}
.switch-toggle input:checked + .switch-slider::before{transform:translateX(18px)}
.color-input{display:flex;align-items:center;gap:8px}
.color-input input[type=color]{width:40px;height:36px;border:1.5px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;padding:2px}

/* Footer */
.footer{text-align:center;padding:40px 24px;border-top:1px solid var(--border-light);color:var(--text-muted);font-size:13px;margin-top:60px}

/* ===========================================================
   后台管理 移动端全模块优化
   =========================================================== */
.sb-toggle{display:none;width:40px;height:40px;border-radius:var(--radius-sm);align-items:center;justify-content:center;font-size:20px;color:var(--text);transition:background .2s var(--ease-out)}
.sb-toggle:hover{background:var(--bg-soft)}
/* 侧边栏遮罩层 */
.sb-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.4);z-index:49;opacity:0;visibility:hidden;transition:opacity .3s var(--ease-out),visibility .3s var(--ease-out)}
.sidebar.open ~ .sb-backdrop{opacity:1;visibility:visible}

@media(max-width:768px){
  /* === 侧边栏：使用 left 定位更可靠 === */
  .sidebar{left:-100%;box-shadow:var(--shadow-lg);z-index:50;transition:left .3s var(--ease-out)}
  .sidebar.open{left:0}
  .main-area{margin-left:0;width:100%}
  .sb-toggle{display:flex}
  .sidebar-nav{flex-direction:column;gap:1px}
  .sidebar-nav a{padding:12px 16px;font-size:14px;border-radius:0;margin:0 8px}
  .sidebar-nav a::before{left:8px;width:2px}
  .sb-logo{padding:16px 20px 20px}
  .sidebar-footer{padding:16px 12px 0;margin-top:16px}

  /* === 顶部栏 === */
  .top-bar{height:56px;padding:0 12px;gap:8px;flex-wrap:nowrap}
  .tb-title{font-size:15px;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
  .top-bar>div:last-child{display:flex;gap:6px;flex-shrink:0}
  .top-bar .btn-sm{padding:6px 10px;font-size:12px;white-space:nowrap}

  /* === 内容区域 === */
  .content{padding:12px;width:100%;overflow-x:hidden}
  .section-block.active{animation:sectionInMobile .3s var(--ease-out)}
  @keyframes sectionInMobile{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

  /* === 统计卡片 === */
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:20px}
  .stat-card{padding:14px 16px}
  .stat-icon{width:32px;height:32px;border-radius:8px;font-size:15px;margin-bottom:8px}
  .stat-value{font-size:22px}
  .stat-label{font-size:11px;margin-top:2px}

  /* === 表格卡片通用 === */
  .table-card{border-radius:var(--radius-sm);margin-bottom:10px;overflow:hidden}
  .table-header{padding:12px 14px;flex-direction:column;align-items:flex-start;gap:8px}
  .table-header h3{font-size:15px;width:100%}
  .table-actions{width:100%;flex-direction:column;gap:6px}
  .table-actions input,.table-actions select,.table-actions .form-input,.table-actions .form-select{width:100%!important;font-size:13px;padding:8px 10px;max-width:100%}
  .table-actions .btn-sm{width:100%;justify-content:center;padding:8px 12px;font-size:13px}

  /* === 表格主体 === */
  .data-table{font-size:13px;min-width:100%}
  .data-table th,.data-table td{padding:8px 10px;white-space:nowrap}
  .table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;position:relative;border-radius:var(--radius-sm);-ms-overflow-style:none;scrollbar-width:none}
  .table-wrap::-webkit-scrollbar{display:none}
  .table-wrap::after{content:'⟵ 左右滑动查看更多 ⟶';display:block;text-align:center;font-size:11px;color:var(--text-muted);padding:8px 0 2px;background:var(--surface);letter-spacing:1px}

  /* === 活动表格 === */
  #eventsTable{min-width:780px}
  #eventsTable td img{width:32px;height:32px;border-radius:6px;object-fit:cover}
  #eventsTable td:last-child .btn-sm{padding:5px 8px;font-size:11px;margin:1px}

  /* === 激活码表格 === */
  #codesTable{min-width:880px}
  #codesTable td:last-child{white-space:nowrap}
  #codesTable td:last-child .btn-sm{padding:5px 10px;font-size:12px;margin:2px}
  #codesTableWrap::after{content:'⟵ 左右滑动查看完整信息 ⟶'}

  /* === 审计日志表格 === */
  #auditTable{min-width:600px;font-size:12px}
  #auditTable th,#auditTable td{padding:8px 8px}
  #auditTable td:nth-child(3){max-width:160px;overflow:hidden;text-overflow:ellipsis}
  #auditActionFilter,#auditUserFilter,#auditStartDate,#auditEndDate{width:100%!important;font-size:13px;padding:8px 10px}
  #sec-audit .table-actions{gap:6px}
  #sec-audit .table-actions .btn-sm{flex:1;min-width:0}

  /* === 证件种类表格 === */
  #credentialsBody{min-width:360px}

  /* === 黑名单表格 === */
  #blacklistBody{min-width:480px}
  #blAttemptsBody{min-width:560px}
  #blActivatedBody{min-width:640px}

  /* === 用户管理表格 === */
  #usersTable{min-width:560px}
  #usersTable th:nth-child(3),#usersTable td:nth-child(3){display:none}
  #usersTable td:last-child{white-space:normal!important}

  /* === 图表 === */
  #chartsGrid{grid-template-columns:1fr!important;gap:10px}
  #trendChart,#distChart{padding:14px!important}

  /* === 弹窗 === */
  .modal-overlay{padding:8px;align-items:flex-end}
  .modal{max-width:100%;border-radius:var(--radius-lg) var(--radius-lg) 0 0;max-height:85vh;transform:translateY(100%)}
  .modal-overlay.show .modal{transform:translateY(0)}
  .modal-header{padding:16px 18px}
  .modal-header h3{font-size:16px}
  .modal-body{padding:16px 18px}
  .modal-body [style*="grid-template-columns"]{grid-template-columns:1fr!important;gap:12px}
  .modal-footer{padding:14px 18px;flex-direction:column-reverse}
  .modal-footer .btn-sm,.modal-footer .btn-primary,.modal-footer .btn-secondary{width:100%}

  /* === 确认对话框 === */
  .confirm-box{padding:20px;max-width:100%;margin:0 20px}
  .confirm-actions{flex-direction:column-reverse}
  .confirm-actions .btn-sm{width:100%}

  /* === 活动选择卡片 === */
  #codeEventPicker{grid-template-columns:1fr!important;gap:8px}
  .event-pick-card{padding:12px!important}

  /* === 系统设置表单 === */
  #sec-settings .modal-body{max-width:100%!important;padding:16px}
  #sec-settings .form-group{margin-bottom:14px}
  #sec-settings .form-label{font-size:13px}
  #sec-settings .form-input,#sec-settings .form-select{font-size:14px;padding:10px 12px}
  #sec-settings hr{margin:16px 0}

  /* === 分页 === */
  #codesPagination{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;padding:8px}
  #codesPagination .btn-sm{padding:6px 10px;font-size:12px}

  /* === 统计信息 === */
  #codesStats{flex-direction:column;gap:4px;padding:10px 14px;font-size:12px}
  #codesStats span{display:block}

  /* === 表单通用 === */
  .form-input,.form-select{padding:10px 12px;font-size:14px}
  .form-group{margin-bottom:12px}

  /* === Toast 提示 === */
  .toast{bottom:16px;left:12px;right:12px;max-width:none;font-size:13px;padding:12px 16px;top:auto;transform:translateY(20px)}
  .toast.show{transform:translateY(0)}
  .back-to-top{right:16px;bottom:20px;width:40px;height:40px;font-size:18px}

  /* === 首页 hero 移动端 === */
  .hero{min-height:auto;min-height:50vh;padding:90px 16px 50px}
  .hero h1{font-size:26px;letter-spacing:-1px;margin-bottom:14px}
  .hero p{font-size:14px;margin-bottom:24px;line-height:1.6}
  .hero-buttons{flex-wrap:nowrap;gap:10px}
  .hero .btn-primary,.hero .btn-secondary{padding:11px 20px;font-size:14px}
  .hero-stats{flex-wrap:wrap;gap:16px 20px;margin-top:28px}
  .hero-stat-item{flex:1;min-width:80px}
  .hero-stat-num{font-size:24px}
  .hero-stat-label{font-size:11px;margin-top:6px;letter-spacing:.5px}
  .hero-stat-divider{display:none}
  .section{padding:36px 14px}
  .section-title{font-size:22px;margin-bottom:6px}
  .section-subtitle{font-size:13px;margin-bottom:24px}
  .section-label{font-size:11px;letter-spacing:2px}
  .events-grid{grid-template-columns:1fr;gap:14px}
  .about-metrics{flex-wrap:wrap;gap:0;padding:20px 12px;margin-bottom:24px}
  .about-metric{flex:1 1 50%;min-width:50%;padding:10px 8px}
  .about-metric:nth-child(odd){border-right:1px solid var(--border-light)}
  .about-metric:nth-child(1),.about-metric:nth-child(2){border-bottom:1px solid var(--border-light)}
  .about-metric-num{font-size:22px}
  .about-metric-num small{font-size:13px}
  .about-metric-label{font-size:11px}
  .about-metric-divider{display:none}
  .about-grid{grid-template-columns:1fr;gap:12px}
  .about-card{padding:20px}
  .about-icon{width:32px;height:32px;font-size:14px}
  .about-h3{font-size:16px}
  .about-p{font-size:13px}
  .company-card{margin-bottom:24px}
  .company-body{padding:24px 18px}
  .company-intro{font-size:13.5px;line-height:1.8;margin-bottom:18px}
  .company-features{grid-template-columns:1fr;gap:10px}
  .company-feature{padding:12px}
  .cf-title{font-size:13px}
  .cf-desc{font-size:12px}
  .guide-steps{flex-direction:column;gap:8px;margin-bottom:28px}
  .guide-step{padding:20px 14px;flex-direction:row;text-align:left;gap:14px;align-items:center}
  .gs-num{width:36px;height:36px;font-size:16px;margin-bottom:0;flex-shrink:0}
  .gs-body{flex:1}
  .gs-title{font-size:14px;margin-bottom:3px}
  .gs-desc{font-size:12px;line-height:1.5}
  .gs-arrow{right:-16px;top:auto;bottom:-16px;transform:rotate(90deg);width:20px;height:20px;font-size:14px}
  .guide-step:last-child .gs-arrow{display:none}
  .faq-wrap{margin:0}
  .faq-q{font-size:13.5px;padding:14px 16px}
  .faq-a{font-size:12.5px;padding:0 16px;line-height:1.65}
  .faq-item.open .faq-a{padding:0 16px 14px}
  .faq-icon{font-size:18px;margin-left:8px}
  .security-section{margin-top:32px}
  .security-head{margin-bottom:16px;padding:20px 18px 0}
  .security-h3{font-size:16px}
  .security-grid{grid-template-columns:1fr;gap:1px}
  .security-item{padding:16px 14px}
  .si-title{font-size:14px}
  .si-desc{font-size:12px;line-height:1.55}
  .event-image{height:160px}
  .event-body{padding:16px}
  .event-name{font-size:15px}
  .event-meta-item{font-size:12px}
  .security-card-body{flex-direction:column;text-align:center}
  .sc-qr{margin:0 auto}
  .activate-card{padding:20px}
  .activate-container,.query-container{max-width:100%;padding:0 8px}
  .activate-header,.query-header{padding:30px 0 16px}
  .activate-header h1,.query-header h1{font-size:22px}
  /* 导航栏移动端 */
  .navbar{padding:0 12px;height:56px}
  .nav-logo-img{height:40px;max-width:140px}
  .nav-link{padding:6px 8px;font-size:12px}
  .nav-btn{padding:6px 14px;font-size:13px}
  /* 用户菜单移动端 */
  .user-btn{padding:4px 6px 4px 4px}
  .user-name{display:none}
  .user-arrow{display:none}
  .user-avatar{width:30px;height:30px;font-size:13px}
  .auth-card{padding:24px;margin:0 8px}
  .query-tab{font-size:13px;padding:8px}
  .ticket-result .security-card-header{padding:16px}
  .ticket-result .sc-event{font-size:16px}
  .ticket-result .sc-name{font-size:18px}
  /* 步骤指示器 */
  .steps{margin-bottom:20px;gap:0}
  .step{width:34px;height:34px;font-size:13px}
  .step.done::before{font-size:15px}
  .step-label{font-size:11px}
  .step-line{max-width:36px;min-width:22px;margin-top:15px}
  .step-content.active{animation:stepSlideIn .4s var(--ease) forwards}
  /* 滑动拼图 */
  .sc-wrap{max-width:100%}
  .sc-canvas{height:140px}
  .sc-bar{height:40px;border-radius:20px}
  .sc-slider{width:40px;height:40px;font-size:14px}
  .sc-track{font-size:12px}
  .sc-tip{font-size:11px}
  .sc-refresh{width:24px;height:24px;font-size:12px}
  .sc-overlay{padding:12px}
  .sc-dialog{padding:20px;max-width:100%}
  .sc-dialog-title{font-size:15px}
  .sc-dialog-desc{font-size:11px;margin-bottom:14px}
  .sc-dialog-footer{font-size:10px}
  /* 页脚 */
  .footer{padding:28px 16px;margin-top:40px;font-size:12px;line-height:1.8}
}

/* === 超小屏 (≤480px) === */
@media(max-width:480px){
  .stat-grid{grid-template-columns:1fr 1fr;gap:8px}
  .stat-card{padding:12px}
  .stat-value{font-size:20px}
  .stat-label{font-size:10px}
  .tb-title{font-size:14px}
  .table-header h3{font-size:14px}
  .data-table{font-size:12px}
  .data-table th,.data-table td{padding:6px 8px}
  .steps{margin-bottom:16px}
  .step{width:30px;height:30px;font-size:12px}
  .step-line{max-width:24px;min-width:16px;margin-top:13px}
  .step-label{font-size:10px}
  .sc-canvas{height:120px}
  .sc-bar{height:36px;border-radius:18px}
  .sc-slider{width:36px;height:36px;font-size:13px}
  #auditTable td:nth-child(3){max-width:100px}
  /* 生成激活码弹窗中日期/活动选择 */
  .modal-body{font-size:13px}
  .form-label{font-size:12px}
}

/* ===========================================================
   全站微动效系统（v2 升级补充）
   - 仅使用 transform/opacity，保证 60fps
   - 单动效 200-350ms，缓动 ease-out
   - 移动端弱化复杂动效，无障碍 prefers-reduced-motion 适配
   =========================================================== */

/* 模块错落淡入上滑（IntersectionObserver 触发） */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .5s var(--ease-out),transform .5s var(--ease-out)}
.reveal.in-view{opacity:1;transform:translateY(0)}
.reveal[data-delay="1"]{transition-delay:.08s}
.reveal[data-delay="2"]{transition-delay:.16s}
.reveal[data-delay="3"]{transition-delay:.24s}
.reveal[data-delay="4"]{transition-delay:.32s}
.reveal[data-delay="5"]{transition-delay:.40s}
.reveal[data-delay="6"]{transition-delay:.48s}

/* 卡片光晕悬浮（用于 stat-card、event-card 等关键卡片） */
.glow-hover{position:relative}
.glow-hover::after{content:'';position:absolute;inset:-1px;border-radius:inherit;background:var(--grad-brand);opacity:0;z-index:-1;transition:opacity .3s var(--ease-out);filter:blur(8px)}
.glow-hover:hover::after{opacity:.18}

/* 数据看板：数字递增动画占位（配合 common.js 的 animateNumber） */
.num-animate{display:inline-block;font-variant-numeric:tabular-nums}

/* 渐变文本工具类 */
.text-grad{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.text-grad-aux{background:var(--grad-aux);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}

/* 渐变分割线 */
.divider-grad{height:1px;background:var(--grad-divider);border:none}

/* 页面转场：淡入 + 轻微缩放 */
.page-transition{animation:pageIn .35s var(--ease-out)}
@keyframes pageIn{from{opacity:0;transform:scale(.98) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}

/* 链接渐变下划线（通用） */
.link-grad{position:relative;color:var(--primary);font-weight:500}
.link-grad::after{content:'';position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--grad-brand);border-radius:2px;transition:width .25s var(--ease-out)}
.link-grad:hover::after{width:100%}

/* 焦点可见性（无障碍键盘导航） */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

/* 顶部进度条（页面加载/路由切换时使用） */
.top-progress{position:fixed;top:0;left:0;height:2px;background:var(--grad-brand);z-index:9999;transition:width .3s var(--ease-out),opacity .3s var(--ease-out);box-shadow:0 0 8px rgba(22,93,255,.5)}

/* 渐变骨架屏（加载占位） */
.skeleton{position:relative;overflow:hidden;background:var(--bg-soft)}
.skeleton::after{content:'';position:absolute;inset:0;transform:translateX(-100%);background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);animation:shimmer 1.5s infinite}
[data-theme="dark"] .skeleton::after{background:linear-gradient(90deg,transparent,rgba(255,255,255,.08),transparent)}
@keyframes shimmer{100%{transform:translateX(100%)}}

/* 移动端弱化复杂动效：减少 transform 复杂度、缩短时长 */
@media(max-width:768px){
  .reveal{transition-duration:.35s}
  .event-card:hover{transform:translateY(-3px)}
  .stat-card:hover{transform:translateY(-2px)}
  body::before{animation:none}
  .ambientFlow{animation:none}
}

/* 无障碍：尊重用户系统级减少动效偏好 */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
  body::before{animation:none}
}