/* ===== Reset & Variables ===== */
:root{
  --deep-blue:#0A1F44;
  --deep-blue-2:#123A6B;
  --gold:#C9A227;
  --gold-light:#E6B800;
  --red:#E63946;
  --off-white:#F5F2EB;
  --white:#FFFFFF;
  --dark-text:#14213D;
  --muted-text:#5C6773;
  --gradient-primary:linear-gradient(135deg,#0A1F44 0%,#123A6B 100%);
  --gradient-accent:linear-gradient(135deg,#C9A227 0%,#E6B800 100%);
  --font-sans:"PingFang SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"Roboto Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --container:1200px;
  --shadow-brutal:8px 8px 0 rgba(10,31,68,.85);
  --shadow-soft:6px 6px 0 rgba(20,33,61,.18);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.7;color:var(--dark-text);background:var(--off-white);-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
a{color:var(--gold);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.2;color:var(--dark-text)}
h1{font-size:clamp(32px,6vw,48px);font-weight:900;line-height:1.1}
h2{font-size:clamp(24px,4.5vw,32px)}
h3{font-size:clamp(19px,3vw,24px)}
button,input{font-family:inherit;font-size:inherit}
[hidden]{display:none!important}

/* ===== Utilities ===== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
@media(max-width:767px){.container{padding-left:16px;padding-right:16px}}
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:16px;top:-100px;z-index:3000;padding:12px 20px;background:var(--gold);color:var(--deep-blue);font-weight:800;font-size:14px;box-shadow:4px 4px 0 rgba(10,31,68,.7)}
.skip-link:focus{top:16px}

/* ===== Scroll Progress ===== */
.scroll-progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:2200;background:rgba(255,255,255,.15);pointer-events:none}
.scroll-progress span{display:block;width:0;height:100%;background:var(--gradient-accent);box-shadow:0 0 12px rgba(230,184,0,.7)}

/* ===== Header ===== */
.site-header{position:relative;z-index:100;background:var(--gradient-primary);color:var(--white)}
.site-header::after{content:"";display:block;height:5px;background:linear-gradient(90deg,var(--gold) 0 78%,var(--red) 78% 100%);clip-path:polygon(0 0,100% 0,calc(100% - 28px) 100%,0 100%)}
.header-utility{background:rgba(4,12,28,.55);border-bottom:1px solid rgba(201,162,39,.4)}
.header-utility-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:34px;font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.72)}
.header-utility-link{color:var(--gold-light);font-weight:700;letter-spacing:.12em;white-space:nowrap}
.header-utility-link:hover{color:var(--gold);text-decoration:none}
.live-dot{display:inline-block;width:7px;height:7px;margin-right:6px;border-radius:50%;background:var(--red);box-shadow:0 0 0 3px rgba(230,57,70,.25);vertical-align:1px}
.masthead{position:relative;text-align:center;padding:30px 70px 20px}
.header-actions{position:absolute;top:50%;left:0;right:0;transform:translateY(-50%);display:flex;align-items:center;justify-content:space-between;padding:0 22px;pointer-events:none}
.nav-toggle,.nav-toggle-spacer{width:46px;height:46px;flex:0 0 46px}
.nav-toggle{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;padding:0;background:rgba(255,255,255,.07);border:2px solid rgba(255,255,255,.45);cursor:pointer;pointer-events:auto;transition:border-color .2s,background .2s}
.nav-toggle:hover{background:rgba(255,255,255,.16);border-color:var(--gold)}
.nav-toggle-bar{display:block;width:20px;height:2px;background:var(--white);transition:transform .3s var(--ease),opacity .2s}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.brand{display:inline-flex;flex-direction:column;align-items:center;color:var(--white);text-decoration:none!important}
.brand-issue{font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.42em;text-indent:.42em;color:rgba(255,255,255,.5);margin-bottom:5px}
.brand-name{font-size:clamp(26px,4.5vw,40px);font-weight:900;line-height:1;letter-spacing:.14em;text-indent:.14em;color:var(--white)}
.brand-name em{font-style:normal;color:var(--gold-light)}
.brand-en{font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.52em;text-indent:.52em;text-transform:uppercase;color:var(--gold);margin-top:7px;white-space:nowrap}
.main-nav{border-top:1px solid rgba(255,255,255,.18);border-bottom:1px solid rgba(255,255,255,.18)}
.nav-list{display:flex;justify-content:center;flex-wrap:wrap}
.nav-item{position:relative}
.nav-link{display:block;padding:13px 20px;border-bottom:3px solid transparent;color:rgba(255,255,255,.85);font-size:14px;font-weight:800;letter-spacing:.18em;text-indent:.18em;transition:color .2s,background .2s,border-color .2s}
.nav-link:hover{color:var(--gold-light);background:rgba(201,162,39,.1);text-decoration:none}
.nav-link[aria-current="page"]{color:var(--gold-light);border-bottom-color:var(--gold);background:rgba(201,162,39,.14)}
.search-panel{display:flex;align-items:center;gap:14px;padding:14px 0 22px}
.search-label{font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.3em;color:var(--gold);text-transform:uppercase}
.search-box{display:flex;flex:1;align-items:center;gap:8px;border-bottom:2px solid rgba(255,255,255,.28);transition:border-color .2s}
.search-box:focus-within{border-bottom-color:var(--gold)}
.search-input{flex:1;min-width:0;padding:8px 0;background:transparent;border:0;outline:none;color:var(--white);font-size:14px;letter-spacing:.03em}
.search-input::placeholder{color:rgba(255,255,255,.45)}
.search-input::-webkit-search-cancel-button{-webkit-appearance:none}
.search-btn{width:28px;height:28px;padding:0;background:transparent;border:2px solid transparent;color:var(--gold);font-size:14px;line-height:1;cursor:pointer;transition:border-color .2s,color .2s}
.search-btn:hover{color:var(--gold-light);border-color:rgba(201,162,39,.4)}
.nav-scrim{position:fixed;inset:0;z-index:2050;background:rgba(5,12,28,.62);opacity:0;pointer-events:none;transition:opacity .3s ease}
.nav-scrim[data-open="true"]{opacity:1;pointer-events:auto}
.nav-lock{overflow:hidden}

/* ===== Footer ===== */
.site-footer{position:relative;z-index:1;margin-top:80px;background:var(--gradient-primary);color:var(--white)}
.site-footer::before{content:"";display:block;height:5px;background:linear-gradient(90deg,var(--red) 0 18%,var(--gold) 18% 100%);clip-path:polygon(0 0,100% 0,100% 100%,30px 100%)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px;padding:52px 0 36px}
.footer-brand{min-width:0}
.footer-brand-name{display:inline-block;color:var(--white);font-size:26px;font-weight:900;letter-spacing:.1em}
.footer-brand-name:hover{text-decoration:none}
.footer-brand-name em{font-style:normal;color:var(--gold-light)}
.footer-brand-en{display:block;font-family:var(--font-mono);font-size:10px;letter-spacing:.36em;text-indent:.36em;color:var(--gold);margin-top:6px}
.footer-desc{margin-top:16px;max-width:32em;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.footer-col{min-width:0}
.footer-col-title{font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid rgba(201,162,39,.4)}
.footer-links a{display:block;padding:5px 0;color:rgba(255,255,255,.82);font-size:14px;transition:color .2s,padding-left .2s}
.footer-links a:hover{color:var(--gold-light);padding-left:6px;text-decoration:none}
.contact-list li{display:flex;align-items:flex-start;gap:10px;padding:4px 0;font-size:14px;color:rgba(255,255,255,.78)}
.contact-label{flex:0 0 38px;font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.16em;color:var(--gold);padding-top:2px}
.contact-text{overflow-wrap:anywhere}
.contact-note{margin-top:10px;padding:10px 12px;border-left:3px solid var(--red);background:rgba(10,31,68,.35);font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.66)}
.footer-statement{position:relative;margin:0 0 48px;padding:20px 24px 20px 58px;border:2px solid rgba(201,162,39,.55);box-shadow:6px 6px 0 rgba(3,9,22,.45)}
.footer-statement::before{content:"“";position:absolute;left:14px;top:2px;font-size:44px;font-weight:900;line-height:1;color:var(--red)}
.footer-statement p{font-size:16px;font-weight:600;color:rgba(255,255,255,.9)}
.footer-bottom{background:var(--gradient-accent);color:var(--deep-blue)}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding-top:14px;padding-bottom:14px;font-size:13px;font-weight:700}
.footer-copy{margin:0}
.footer-copy a{color:var(--deep-blue);text-decoration:underline}
.footer-icp{font-family:var(--font-mono);font-size:12px;letter-spacing:.05em}

/* ===== Back to Top ===== */
.top-button{position:fixed;right:22px;bottom:22px;z-index:1900;display:grid;place-items:center;width:54px;height:54px;padding:0;background:var(--deep-blue);border:3px solid var(--gold);color:var(--gold-light);font-size:22px;font-weight:900;line-height:1;cursor:pointer;box-shadow:5px 5px 0 rgba(20,33,61,.4);opacity:0;transform:translateY(14px);pointer-events:none;transition:opacity .3s,transform .3s,background .2s,color .2s}
.top-button[data-visible="true"]{opacity:1;transform:translateY(0);pointer-events:auto}
.top-button:hover{background:var(--gold);color:var(--deep-blue)}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border:3px solid var(--deep-blue);background:var(--white);color:var(--deep-blue);font-size:15px;font-weight:800;line-height:1;letter-spacing:.08em;text-decoration:none;cursor:pointer;box-shadow:5px 5px 0 var(--deep-blue);transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s}
.btn:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 var(--gold);text-decoration:none;background:var(--off-white)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--deep-blue)}
.btn-gold{background:var(--gradient-accent);border-color:var(--gold);color:var(--deep-blue)}
.btn-gold:hover{background:var(--gold-light);box-shadow:8px 8px 0 var(--deep-blue)}
.btn-outline{background:transparent;border-color:var(--deep-blue);color:var(--deep-blue);box-shadow:3px 3px 0 transparent}
.btn-outline:hover{background:rgba(10,31,68,.08);box-shadow:3px 3px 0 var(--deep-blue)}
.btn[aria-disabled="true"]{opacity:.5;pointer-events:none}

/* ===== Breadcrumb ===== */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:18px 0 0;font-size:13px;color:var(--muted-text)}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li:not(:last-child)::after{content:"/";color:var(--muted-text)}
.breadcrumb a{color:var(--gold);font-weight:700}
.breadcrumb [aria-current="page"]{color:var(--muted-text);font-weight:600}

/* ===== Editorial Components ===== */
.kicker{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--gold)}
.kicker::before{content:"";width:30px;height:3px;background:var(--gradient-accent)}
.section-title{font-size:clamp(28px,4.5vw,40px);font-weight:900;line-height:1.12;color:var(--dark-text);margin-top:12px}
.section-sub{margin-top:10px;max-width:58ch;color:var(--muted-text);font-size:16px}
.tag{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border:2px solid var(--deep-blue);color:var(--deep-blue);font-size:12px;font-weight:800;letter-spacing:.1em;background:transparent}
.tag--gold{border-color:var(--gold);color:var(--gold)}
.tag--red{border-color:var(--red);color:var(--red)}
.score-chip{display:inline-flex;align-items:baseline;gap:8px;padding:7px 14px;background:var(--deep-blue);color:var(--gold-light);font-family:var(--font-mono);font-size:18px;font-weight:700;line-height:1;border-bottom:3px solid var(--gold)}
.score-chip small{font-family:var(--font-sans);font-size:11px;font-weight:700;color:rgba(255,255,255,.55);letter-spacing:.08em}

/* ===== Section Panels ===== */
.section-panel{padding:clamp(56px,9vw,96px) 0;scroll-margin-top:24px}
.section-panel--alt{background:var(--white)}
.section-panel--dark{background:var(--gradient-primary);color:var(--white)}
.section-panel--dark h2,.section-panel--dark h3,.section-panel--dark .section-title{color:var(--white)}
.section-panel--dark .section-sub{color:rgba(255,255,255,.72)}

/* ===== Prose ===== */
.prose{max-width:68ch}
.prose p{margin:0 0 1.2em;color:var(--dark-text)}
.prose h2,.prose h3{margin-top:1.5em}
.prose ul{list-style:none;margin:0 0 1.2em}
.prose ul li{position:relative;padding-left:1.3em;margin:.4em 0}
.prose ul li::before{content:"◆";position:absolute;left:0;top:.12em;color:var(--gold);font-size:11px}
.prose blockquote{margin:1.5em 0;padding:14px 20px;background:var(--white);border-left:5px solid var(--gold);box-shadow:4px 4px 0 rgba(10,31,68,.15);font-weight:600}
.prose a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}

/* ===== Grid ===== */
.content-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.content-grid>*{grid-column:1/-1}
@media(min-width:768px){
  .col-3{grid-column:span 3}
  .col-4{grid-column:span 4}
  .col-6{grid-column:span 6}
  .col-8{grid-column:span 8}
  .col-9{grid-column:span 9}
  .col-12{grid-column:1/-1}
}

/* ===== Image Frame ===== */
.image-frame{position:relative;display:block;overflow:hidden;background:var(--deep-blue);border:2px solid var(--deep-blue);box-shadow:var(--shadow-soft)}
.image-frame::before{content:"";display:block;padding-top:56.25%;background:repeating-linear-gradient(135deg,rgba(201,162,39,.16) 0 14px,rgba(255,255,255,.05) 14px 28px),var(--deep-blue)}
.image-frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.image-frame.is-4x3::before{padding-top:75%}
.image-frame.is-3x4::before{padding-top:133.34%}
.image-frame.is-square::before{padding-top:100%}
.image-frame.is-21x9::before{padding-top:42.86%}
.image-frame--gold{border-color:var(--gold);box-shadow:6px 6px 0 rgba(201,162,39,.35)}

/* ===== TOC Index ===== */
.toc-index{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px}
.toc-card{position:relative;display:block;padding:22px;border:2px solid var(--dark-text);background:var(--white);box-shadow:6px 6px 0 var(--dark-text);color:var(--dark-text);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.toc-card:hover{transform:translate(-2px,-2px);box-shadow:9px 9px 0 var(--gold);text-decoration:none;color:var(--dark-text)}
.toc-card-num{font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.18em;color:var(--gold)}
.toc-card-name{display:block;margin-top:8px;font-size:18px;font-weight:800}
.toc-card-desc{display:block;margin-top:4px;font-size:14px;color:var(--muted-text)}

/* ===== Interaction Protocols ===== */
[data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
[data-reveal][data-revealed="true"]{opacity:1;transform:none}
[data-toc]{scroll-margin-top:30px;transition:color .2s,border-color .2s,background .2s}
[data-toc][data-active="true"]{color:var(--gold)}

/* ===== Responsive ===== */
@media(min-width:1024px){
  .nav-toggle,.nav-toggle-spacer{display:none}
}
@media(min-width:768px) and (max-width:1023px){
  .nav-link{padding:12px 13px;font-size:13px;letter-spacing:.1em}
  .masthead{padding:24px 66px 16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:767px){
  .header-utility{display:none}
  .masthead{padding:18px 52px 14px}
  .header-actions{padding:0 16px}
  .brand-name{font-size:24px;letter-spacing:.1em;text-indent:.1em}
  .brand-en{font-size:9px;letter-spacing:.4em;text-indent:.4em}
  .brand-issue{display:none}
  .main-nav{position:fixed;top:0;right:0;bottom:0;z-index:2100;display:flex;flex-direction:column;width:min(320px,84vw);padding:96px 22px 24px;background:var(--deep-blue);border-left:3px solid var(--gold);box-shadow:-10px 0 24px rgba(3,8,20,.45);transform:translateX(102%);transition:transform .32s var(--ease);overflow-y:auto;border-top:0;border-bottom:0}
  .main-nav[data-open="true"]{transform:none}
  .nav-list{flex-direction:column;gap:0}
  .nav-link{padding:15px 12px;border-bottom:1px solid rgba(255,255,255,.12);border-left:3px solid transparent;font-size:16px;letter-spacing:.06em;text-indent:0}
  .nav-link:hover{background:rgba(255,255,255,.06)}
  .nav-link[aria-current="page"]{border-bottom-color:rgba(255,255,255,.12);border-left-color:var(--gold);background:rgba(201,162,39,.14)}
  .search-panel{padding:12px 0 16px}
  .search-label{font-size:10px;letter-spacing:.2em}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:40px 0 28px}
  .footer-statement{margin-bottom:36px;padding:18px 18px 18px 48px}
  .footer-statement::before{font-size:38px;left:10px}
  .footer-bottom-inner{flex-direction:column;text-align:center}
}

/* ===== Focus & Reduced Motion ===== */
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;box-shadow:0 0 0 6px rgba(10,31,68,.18)}
main:focus{outline:none}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  [data-reveal]{opacity:1;transform:none}
  .top-button{transition:none}
}