*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Inter","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:#F5F0E8;color:#2B1D14;line-height:1.6;min-height:100vh;overflow-x:hidden}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;background:none;border:none;cursor:pointer}
img{display:block;max-width:100%}
:focus-visible{outline:3px solid #FF6B35;outline-offset:2px;border-radius:4px}

:root{
  --color-dark:#0A192F;
  --color-cream:#F5F0E8;
  --color-orange:#FF6B35;
  --color-gold:#FFD700;
  --color-brown:#2B1D14;
  --color-gray:#8A8F9E;
  --color-light-gray:#D9DCE5;
  --color-white:#FFFFFF;
  --color-danger:#C0392B;
  --font-display:"Montserrat","Arial Black","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Inter","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular","Consolas",monospace;
  --header-height:76px;
  --container-max:1280px;
  --shadow-hard:5px 5px 0 rgba(10,25,47,0.9);
  --radius-card:18px;
}

main,.main-content{padding-top:calc(var(--header-height) + 20px);min-height:70vh}
.container{max-width:var(--container-max);margin:0 auto;padding:0 clamp(16px,4vw,48px)}
.section{padding:clamp(56px,8vw,112px) 0;border-bottom:2px solid var(--color-light-gray)}
.section-header{max-width:760px;margin-bottom:48px}
.section-title{font-family:var(--font-display);font-weight:700;font-size:clamp(28px,4vw,48px);line-height:1.12;letter-spacing:-0.02em;color:var(--color-dark);margin-bottom:12px}
.section-subtitle{font-size:16px;color:var(--color-gray);line-height:1.7}
.section-number{font-family:var(--font-mono);font-size:14px;font-weight:700;color:var(--color-orange);letter-spacing:0.12em;text-transform:uppercase;display:inline-block;border:2px solid var(--color-orange);border-radius:999px;padding:2px 12px;margin-bottom:16px}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--color-dark)}
h1{font-weight:300;font-size:clamp(40px,5.5vw,72px);line-height:1.04;letter-spacing:-0.03em}
h2{font-weight:700;font-size:clamp(28px,3.5vw,48px);line-height:1.12;letter-spacing:-0.02em}
h3{font-weight:700;font-size:clamp(20px,2vw,28px);line-height:1.2}
p{font-size:16px;line-height:1.7}

.split-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.8fr);gap:clamp(32px,5vw,72px);align-items:start}
.split-aside{position:sticky;top:calc(var(--header-height) + 32px)}
@media(max-width:960px){
  .split-layout{grid-template-columns:1fr}
  .split-aside{position:static}
}

.skip-link{position:fixed;top:-120px;left:16px;z-index:2200;background:var(--color-orange);color:var(--color-dark);font-weight:700;font-size:14px;padding:12px 20px;border:2px solid var(--color-dark);border-radius:12px;box-shadow:4px 4px 0 var(--color-dark);transition:top .2s}
.skip-link:focus{top:16px}

.site-header{position:fixed;top:0;left:0;right:0;z-index:2000;padding:16px clamp(12px,2vw,32px) 0;pointer-events:none}
.header-inner{max-width:var(--container-max);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:20px;background:rgba(255,255,255,0.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:2px solid var(--color-dark);border-radius:999px;padding:10px 14px 10px 22px;box-shadow:6px 6px 0 rgba(10,25,47,0.95);pointer-events:auto;transition:box-shadow .3s,transform .3s,background .3s}
.site-header.is-scrolled .header-inner{box-shadow:3px 3px 0 rgba(10,25,47,0.95);transform:scale(0.985)}

.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-icon{width:42px;height:42px;border:2px solid var(--color-dark);border-radius:12px;background:var(--color-dark);color:var(--color-gold);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:800;font-size:18px;transform:rotate(-6deg);box-shadow:3px 3px 0 var(--color-orange);transition:transform .25s}
.brand:hover .brand-icon{transform:rotate(0deg) scale(1.05)}
.brand-text{font-family:var(--font-display);font-weight:800;font-size:22px;color:var(--color-dark);letter-spacing:0.02em;white-space:nowrap}

.main-nav{display:block}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-list a{display:inline-block;padding:10px 16px;border-radius:999px;font-size:14px;font-weight:600;color:var(--color-dark);white-space:nowrap;transition:background .2s,color .2s,transform .15s}
.nav-list a:hover{background:var(--color-cream);color:var(--color-orange);transform:translateY(-1px)}
.nav-list a[aria-current="page"]{background:var(--color-dark);color:var(--color-cream);box-shadow:2px 2px 0 var(--color-orange)}

.header-actions{position:relative;display:flex;align-items:center;gap:10px;flex-shrink:0}
.search-toggle{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border:2px solid var(--color-dark);border-radius:50%;color:var(--color-dark);background:var(--color-white);transition:background .2s,color .2s,transform .15s}
.search-toggle:hover{background:var(--color-dark);color:var(--color-cream);transform:translateY(-1px)}
.search-icon{width:15px;height:15px;border:2px solid currentColor;border-radius:50%;position:relative;display:inline-block}
.search-icon::after{content:"";position:absolute;width:8px;height:2px;background:currentColor;transform:rotate(45deg);bottom:-5px;right:-5px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font-body);font-weight:700;font-size:15px;border:2px solid var(--color-dark);border-radius:12px;padding:12px 20px;transition:transform .2s,box-shadow .2s,background .2s,color .2s;white-space:nowrap}
.btn-primary{background:var(--color-orange);color:var(--color-dark);box-shadow:4px 4px 0 var(--color-dark)}
.btn-primary:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--color-dark);background:#ff7a4d}
.btn-dark{background:var(--color-dark);color:var(--color-cream);box-shadow:4px 4px 0 var(--color-orange)}
.btn-dark:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--color-orange)}
.btn-outline{background:transparent;color:var(--color-dark);box-shadow:none}
.btn-outline:hover{background:var(--color-cream);color:var(--color-orange);border-color:var(--color-orange)}
.btn-sm{padding:8px 18px;font-size:13px;border-radius:999px}
.btn-lg{padding:16px 26px;font-size:16px;border-radius:16px}

.nav-toggle{display:none;width:42px;height:42px;border:2px solid var(--color-dark);border-radius:12px;background:var(--color-white);flex-direction:column;align-items:center;justify-content:center;gap:4px;transition:background .2s}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--color-dark);border-radius:2px;transition:transform .3s,opacity .3s}
.nav-toggle.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.header-search{position:absolute;top:calc(100% + 14px);right:0;min-width:280px;background:var(--color-white);border:2px solid var(--color-dark);border-radius:16px;padding:14px;box-shadow:5px 5px 0 rgba(10,25,47,0.9);display:none;z-index:300}
.header-search[data-open]{display:block}
.search-box{display:flex;align-items:center;gap:8px}
.search-box input{width:100%;border:2px solid var(--color-light-gray);border-radius:10px;padding:10px 12px;font-family:var(--font-mono);font-size:13px;outline:none;transition:border-color .2s,box-shadow .2s}
.search-box input:focus{border-color:var(--color-orange);box-shadow:0 0 0 4px rgba(255,107,53,0.15)}
.search-hint{font-size:12px;color:var(--color-gray);margin-top:10px;line-height:1.5}

.site-footer{background:var(--color-dark);color:var(--color-cream);border-top:5px solid var(--color-orange);margin-top:auto}
.footer-grid{max-width:var(--container-max);margin:0 auto;padding:64px clamp(16px,4vw,48px) 48px;display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:48px}
.footer-logo{font-family:var(--font-display);font-weight:800;font-size:28px;color:var(--color-cream);display:flex;align-items:center;gap:10px}
.footer-logo::before{content:"";width:10px;height:32px;background:var(--color-gold);transform:skewX(-12deg);display:inline-block}
.footer-tagline{color:rgba(245,240,232,0.78);margin:16px 0;font-size:15px;line-height:1.7}
.trust-list{display:flex;flex-wrap:wrap;gap:8px}
.trust-list li{background:rgba(255,255,255,0.07);border:1px solid rgba(255,255,255,0.16);border-radius:8px;padding:4px 12px;font-size:12px;color:var(--color-gold);font-family:var(--font-mono)}
.footer-links h3,.footer-contact h3{color:var(--color-gold);font-size:16px;margin-bottom:18px;font-family:var(--font-display);font-weight:700;letter-spacing:0.02em}
.footer-links a,.footer-contact a{display:flex;align-items:center;gap:8px;color:rgba(245,240,232,0.82);margin-bottom:12px;font-size:14px;transition:color .2s,transform .15s}
.footer-links a:hover,.footer-contact a:hover{color:var(--color-orange);transform:translateX(3px)}
.footer-links a::before{content:"→";color:var(--color-orange);font-family:var(--font-mono);font-size:12px}
.footer-contact span{display:flex;align-items:flex-start;gap:8px;color:rgba(245,240,232,0.8);margin-bottom:12px;font-size:14px;line-height:1.6}
.footer-contact span::before{content:"◆";color:var(--color-gold);font-size:10px;margin-top:6px;flex-shrink:0}
.footer-contact a::before{content:"↗";color:var(--color-orange);font-family:var(--font-mono);font-size:13px}
.footer-bottom{max-width:var(--container-max);margin:0 auto;border-top:1px solid rgba(255,255,255,0.12);padding:20px clamp(16px,4vw,48px);display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px}
.footer-copy{font-size:13px;color:rgba(245,240,232,0.55)}
.footer-icp{font-size:13px;color:rgba(245,240,232,0.55);font-family:var(--font-mono)}
.footer-legal{display:flex;gap:18px;flex-wrap:wrap}
.footer-legal a{color:rgba(245,240,232,0.72);font-size:13px;transition:color .2s}
.footer-legal a:hover{color:var(--color-gold)}

.breadcrumb{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:13px;padding:24px 0;color:var(--color-gray)}
.breadcrumb li{display:flex;align-items:center;gap:6px}
.breadcrumb li+li::before{content:"/";color:var(--color-gray)}
.breadcrumb a{color:var(--color-gray);transition:color .2s}
.breadcrumb a:hover{color:var(--color-orange)}
.breadcrumb .current{color:var(--color-dark);font-weight:600}

.card{background:var(--color-white);border:2px solid var(--color-dark);border-radius:var(--radius-card);padding:24px;box-shadow:4px 4px 0 rgba(10,25,47,0.14);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 rgba(10,25,47,0.85)}
.card-title{font-family:var(--font-display);font-weight:700;font-size:18px;color:var(--color-dark);margin-bottom:8px}
.card-body{font-size:14px;color:var(--color-gray);line-height:1.65}
.card-footer{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap}

.badge{display:inline-flex;align-items:center;gap:6px;border:2px solid var(--color-dark);border-radius:999px;padding:3px 12px;font-size:12px;font-weight:700;font-family:var(--font-mono);background:var(--color-cream);color:var(--color-dark)}
.badge-bright{background:var(--color-orange);color:var(--color-dark)}
.badge-gold{background:var(--color-gold);color:var(--color-dark);border-color:var(--color-dark)}

.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.filter-btn{border:2px solid var(--color-dark);border-radius:999px;padding:8px 18px;font-size:14px;font-weight:600;background:var(--color-white);color:var(--color-dark);box-shadow:2px 2px 0 rgba(10,25,47,0.8);transition:transform .2s,box-shadow .2s,background .2s,color .2s}
.filter-btn:hover{transform:translate(-1px,-1px);background:var(--color-cream)}
.filter-btn.is-active,.filter-btn[aria-pressed="true"]{background:var(--color-dark);color:var(--color-cream);box-shadow:3px 3px 0 var(--color-orange)}

.accordion-item{border:2px solid var(--color-dark);border-radius:16px;margin-bottom:12px;background:var(--color-white);box-shadow:3px 3px 0 rgba(10,25,47,0.12);overflow:hidden}
.accordion-header{width:100%;display:flex;align-items:center;justify-content:space-between;padding:16px 20px;font-family:var(--font-display);font-weight:700;font-size:16px;color:var(--color-dark);background:transparent;cursor:pointer;transition:background .2s}
.accordion-header:hover{background:var(--color-cream)}
.accordion-header::after{content:"+";font-family:var(--font-mono);font-size:20px;color:var(--color-orange);transition:transform .25s}
.accordion-header[aria-expanded="true"]::after{transform:rotate(45deg)}
.accordion-panel{padding:0 20px 18px;font-size:14px;color:var(--color-gray);line-height:1.7}
.accordion-panel[hidden]{display:none}

.tabs-nav{display:flex;flex-wrap:wrap;gap:8px;border-bottom:2px solid var(--color-dark);padding-bottom:0;margin-bottom:24px}
.tab-btn{padding:10px 20px;border:2px solid var(--color-dark);border-bottom:none;border-radius:12px 12px 0 0;background:var(--color-cream);font-family:var(--font-body);font-weight:600;font-size:14px;color:var(--color-dark);transition:background .2s,color .2s}
.tab-btn:hover{background:var(--color-white)}
.tab-btn.is-active,.tab-btn[aria-selected="true"]{background:var(--color-orange);color:var(--color-dark)}

.img-frame{overflow:hidden;border:2px solid var(--color-dark);border-radius:16px;background:var(--color-light-gray);display:flex;align-items:center;justify-content:center;position:relative;min-height:80px}
.img-frame img{width:100%;height:100%;object-fit:cover;display:block}
.img-frame::before{content:"IMG";font-family:var(--font-mono);font-size:12px;color:var(--color-gray);letter-spacing:0.12em;position:absolute}
.img-frame img + *{position:relative;z-index:1}
.img-ratio-16-9{aspect-ratio:16/9}
.img-ratio-4-3{aspect-ratio:4/3}
.img-ratio-1-1{aspect-ratio:1/1}

.slant-strip{position:relative;background:var(--color-dark);color:var(--color-cream);padding:48px clamp(16px,4vw,48px)}
.slant-strip::after{content:"";position:absolute;top:100%;left:0;width:100%;height:28px;background:var(--color-dark);clip-path:polygon(0 0,100% 0,100% 45%,0 100%);pointer-events:none}
.slant-strip + *{margin-top:28px}

.animate-rise{opacity:0;transform:translateY(18px);animation:riseIn .65s cubic-bezier(.2,.65,.3,1) forwards}
@keyframes riseIn{to{opacity:1;transform:translateY(0)}}

.back-to-top{position:fixed;bottom:32px;right:32px;z-index:1500;width:50px;height:50px;border-radius:50%;border:2px solid var(--color-dark);background:var(--color-orange);color:var(--color-dark);font-size:20px;font-weight:700;line-height:1;box-shadow:4px 4px 0 var(--color-dark);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(18px);transition:opacity .3s,transform .3s,box-shadow .2s}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--color-dark)}

@media(max-width:1024px){
  .nav-list a{padding:8px 12px;font-size:13px}
  .brand-text{font-size:18px}
  .header-inner{gap:12px}
}
@media(max-width:820px){
  .nav-toggle{display:flex}
  .main-nav{position:fixed;top:calc(var(--header-height) + 6px);left:12px;right:12px;background:var(--color-white);border:2px solid var(--color-dark);border-radius:20px;padding:14px;box-shadow:6px 6px 0 rgba(10,25,47,0.95);display:none;max-height:calc(100vh - 100px);overflow-y:auto;z-index:1999}
  .main-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:4px}
  .nav-list a{display:block;text-align:center;padding:13px;border-radius:12px;font-size:15px}
  .header-actions .btn-sm{display:none}
  .header-search{min-width:240px;right:-2px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media(max-width:560px){
  .site-header{padding-top:10px}
  .header-inner{padding:8px 10px 8px 16px;border-width:2px}
  .brand-icon{width:36px;height:36px;font-size:15px}
  .brand-text{font-size:16px}
  .search-toggle{width:38px;height:38px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:44px 20px 32px}
  .footer-bottom{flex-direction:column;text-align:center;gap:8px}
  .footer-legal{justify-content:center}
  .back-to-top{bottom:20px;right:20px;width:44px;height:44px;font-size:18px}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}
  html{scroll-behavior:auto}
  .animate-rise{opacity:1;transform:none}
}