@import"https://fonts.googleapis.com/css2?family=Fredoka:wght@400;500;600;700&family=Nunito:wght@300;400;500;600;700&display=swap";:root{--color-primary: #e11d48;--color-on-primary: #ffffff;--color-secondary: #fb7185;--color-accent: #2563eb;--color-destructive: #dc2626;--color-ring: #e11d48;--color-bg: #050507;--color-surface: #0d0d12;--color-surface-raised: #15151d;--color-border: #26262f;--color-text: #f4f4f6;--color-text-muted: #a1a1ab;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 12px rgba(0, 0, 0, .45);--shadow-lg: 0 10px 24px rgba(0, 0, 0, .5);--glow-primary: 0 0 24px rgba(225, 29, 72, .35);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--font-heading: "Fredoka", "PingFang SC", "Microsoft YaHei", sans-serif;--font-body: "Nunito", "PingFang SC", "Microsoft YaHei", sans-serif;--duration-fast: .15s;--duration-base: .2s;--duration-slow: .3s}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:var(--font-body);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}h1,h2,h3,h4{font-family:var(--font-heading);line-height:1.25;margin:0 0 var(--space-md)}p{margin:0 0 var(--space-md)}a{color:var(--color-secondary);text-decoration:none;transition:color var(--duration-base) ease;cursor:pointer}a:hover{color:var(--color-primary)}a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--color-ring);outline-offset:3px;border-radius:var(--radius-sm)}img,svg{display:block;max-width:100%}.container{width:100%;max-width:1120px;margin:0 auto;padding:0 var(--space-lg)}.section{padding:var(--space-3xl) 0}.section-title{font-size:clamp(1.5rem,3vw,2.25rem);text-align:center;margin-bottom:var(--space-sm)}.section-subtitle{text-align:center;color:var(--color-text-muted);max-width:640px;margin:0 auto var(--space-2xl)}.nav{position:sticky;top:0;z-index:50;background:#050507d9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}.nav-logo{display:flex;align-items:center;gap:var(--space-sm);font-family:var(--font-heading);font-weight:700;font-size:1.25rem;color:var(--color-text)}.nav-links{display:flex;align-items:center;gap:var(--space-lg);list-style:none;margin:0;padding:0}.nav-links a{color:var(--color-text-muted);font-weight:600;font-size:.9375rem;padding:var(--space-sm) var(--space-xs);min-height:44px;display:inline-flex;align-items:center}.nav-links a:hover,.nav-links a.active{color:var(--color-text)}.nav-toggle{display:none;background:none;border:none;color:var(--color-text);cursor:pointer;padding:var(--space-sm);min-width:44px;min-height:44px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:12px 24px;border-radius:var(--radius-sm);font-weight:700;font-family:var(--font-body);font-size:1rem;border:2px solid transparent;cursor:pointer;min-height:44px;transition:background var(--duration-base) ease,color var(--duration-base) ease,border-color var(--duration-base) ease,box-shadow var(--duration-base) ease,transform var(--duration-fast) ease}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--color-primary);color:var(--color-on-primary)}.btn-primary:hover{box-shadow:var(--glow-primary)}.btn-secondary{background:transparent;color:var(--color-primary);border-color:var(--color-primary)}.btn-secondary:hover{background:#e11d481a}.btn-accent{background:var(--color-accent);color:#fff}.btn[disabled]{opacity:.5;cursor:not-allowed}.btn[disabled]:hover{transform:none;box-shadow:none}.hero{position:relative;padding:var(--space-3xl) 0;overflow:hidden}.hero:before{content:"";position:absolute;inset:-30% -10% auto;height:480px;background:radial-gradient(ellipse at 50% 0%,rgba(225,29,72,.22),transparent 70%);pointer-events:none}.hero-inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:var(--space-2xl)}.hero-title{font-size:clamp(2rem,5vw,3.25rem);margin-bottom:var(--space-md)}.hero-title .highlight{color:var(--color-primary)}.hero-lead{font-size:1.125rem;color:var(--color-text-muted);max-width:480px}.hero-actions{display:flex;flex-wrap:wrap;gap:var(--space-md);margin-top:var(--space-xl)}.hero-stats{display:flex;gap:var(--space-xl);margin-top:var(--space-2xl)}.hero-stat strong{display:block;font-family:var(--font-heading);font-size:1.5rem;color:var(--color-text)}.hero-stat span{font-size:.875rem;color:var(--color-text-muted)}.hero-visual{display:flex;justify-content:center}.mystery-box{width:min(280px,70vw);aspect-ratio:1;border-radius:var(--radius-lg);background:linear-gradient(145deg,var(--color-surface-raised),var(--color-surface));border:1px solid var(--color-border);box-shadow:var(--shadow-lg),var(--glow-primary);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-md)}.mystery-box .box-mark{font-family:var(--font-heading);font-size:4rem;font-weight:700;color:var(--color-primary);text-shadow:0 0 18px rgba(225,29,72,.6)}.mystery-box .box-caption{color:var(--color-text-muted);font-size:.875rem}.grid{display:grid;gap:var(--space-lg)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-5{grid-template-columns:repeat(5,1fr)}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-lg);transition:border-color var(--duration-base) ease,box-shadow var(--duration-base) ease,transform var(--duration-fast) ease}.card:hover{border-color:#e11d4880;box-shadow:var(--shadow-md);transform:translateY(-2px)}.card-icon{width:44px;height:44px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;background:#e11d481f;color:var(--color-primary);margin-bottom:var(--space-md)}.card h3{font-size:1.125rem;margin-bottom:var(--space-sm)}.card p{color:var(--color-text-muted);font-size:.9375rem;margin:0}.download-panel{display:grid;grid-template-columns:auto 1fr;gap:var(--space-2xl);align-items:center;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-2xl)}.qr-placeholder{width:160px;height:160px;border-radius:var(--radius-md);border:1px dashed var(--color-border);background:var(--color-surface-raised);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-sm);color:var(--color-text-muted);font-size:.8125rem;text-align:center;padding:var(--space-md)}.download-actions{display:flex;flex-wrap:wrap;gap:var(--space-md);margin-top:var(--space-lg)}.table-wrap{overflow-x:auto;border:1px solid var(--color-border);border-radius:var(--radius-md)}table{width:100%;border-collapse:collapse;font-size:.9375rem}th,td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--color-border)}th{background:var(--color-surface-raised);font-family:var(--font-heading);font-weight:600}tbody tr:last-child td{border-bottom:none}.prob-bar{display:flex;height:40px;border-radius:var(--radius-sm);overflow:hidden;font-weight:700;font-size:.875rem}.prob-bar>div{display:flex;align-items:center;justify-content:center;color:#fff;min-width:0;white-space:nowrap}.prob-a{background:var(--color-primary)}.prob-b{background:var(--color-accent)}.prob-none{background:#3f3f46}.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.8125rem;font-weight:700;background:#2563eb26;color:#93c5fd}.notice{border:1px solid rgba(225,29,72,.4);background:#e11d4814;border-radius:var(--radius-md);padding:var(--space-md) var(--space-lg);color:var(--color-text)}.notice strong{color:var(--color-secondary)}.placeholder-note{color:var(--color-text-muted);font-size:.8125rem;font-style:italic}.faq-item{border:1px solid var(--color-border);border-radius:var(--radius-md);margin-bottom:var(--space-md);background:var(--color-surface)}.faq-item summary{cursor:pointer;padding:var(--space-md) var(--space-lg);font-weight:700;list-style:none;display:flex;align-items:center;gap:var(--space-sm);min-height:44px}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";margin-left:auto;color:var(--color-primary);font-family:var(--font-heading);font-size:1.25rem;transition:transform var(--duration-base) ease}.faq-item[open] summary:after{transform:rotate(45deg)}.faq-item .faq-body{padding:0 var(--space-lg) var(--space-md);color:var(--color-text-muted)}.footer{border-top:1px solid var(--color-border);padding:var(--space-2xl) 0;margin-top:var(--space-3xl);color:var(--color-text-muted);font-size:.875rem}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:var(--space-2xl);margin-bottom:var(--space-xl)}.footer h4{color:var(--color-text);font-size:1rem;margin-bottom:var(--space-sm)}.footer ul{list-style:none;padding:0;margin:0}.footer li{margin-bottom:var(--space-sm)}.footer-bottom{border-top:1px solid var(--color-border);padding-top:var(--space-lg);display:flex;flex-wrap:wrap;gap:var(--space-md);justify-content:space-between}.page-header{padding:var(--space-3xl) 0 var(--space-2xl);text-align:center}.page-header h1{font-size:clamp(1.75rem,4vw,2.5rem)}.page-header p{color:var(--color-text-muted);max-width:640px;margin:0 auto}.prose{max-width:760px;margin:0 auto}.prose h2{font-size:1.375rem;margin-top:var(--space-2xl)}.prose ul,.prose ol{color:var(--color-text-muted);padding-left:var(--space-xl)}.prose li{margin-bottom:var(--space-sm)}@media (max-width: 1023px){.grid-5{grid-template-columns:repeat(3,1fr)}.hero-inner{grid-template-columns:1fr}.hero-visual{order:-1}}@media (max-width: 767px){.nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--color-surface);border-bottom:1px solid var(--color-border);padding:var(--space-md)}.nav-links.open{display:flex}.nav-toggle{display:inline-flex;align-items:center;justify-content:center}.grid-3,.grid-5{grid-template-columns:1fr}.download-panel{grid-template-columns:1fr;justify-items:center;text-align:center}.footer-grid{grid-template-columns:1fr}.hero-stats{flex-wrap:wrap;gap:var(--space-lg)}}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}