/* ===== 01 Reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background-color:var(--ink-900);background-image:radial-gradient(circle at 84% 4%,rgba(255,122,61,.16),transparent 44%),radial-gradient(circle at 8% 74%,rgba(43,224,200,.10),transparent 40%);background-repeat:no-repeat;color:var(--ivory);font-family:var(--font-body);font-size:16px;line-height:1.75;font-weight:400;min-height:100vh}
img,svg,video{max-width:100%;display:block}
a{color:var(--cyan);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--amber)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:800;line-height:1.12;letter-spacing:.01em}
p{margin:0}
button{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

/* ===== 02 Tokens ===== */
:root{
  --ink-900:#071A2F;
  --ink-800:#0E2A47;
  --orange:#FF7A3D;
  --cyan:#2BE0C8;
  --amber:#FFC24B;
  --ivory:#F4F1E8;
  --mist:#8FA6BC;
  --graphite:#0B0F14;
  --green:#0F3D34;
  --warm:#FFF6E6;
  --line:rgba(143,166,188,.18);
  --line-strong:rgba(143,166,188,.32);
  --radius-lg:28px;
  --radius-md:18px;
  --radius-sm:12px;
  --pill:999px;
  --wrap:1180px;
  --gap:clamp(16px,2.4vw,28px);
  --gut:clamp(18px,4vw,20px);
  --font-display:"Oswald","Barlow Condensed","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"Inter","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ===== 03 Focus & type ===== */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
.num,.stat-num,.data-row dd,.brand-name,.footer-brand-name{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.skip-link{position:absolute;left:16px;top:-70px;z-index:200;padding:10px 18px;border-radius:var(--pill);background:var(--cyan);color:var(--graphite);font-size:14px;font-weight:600;transition:top .2s ease}
.skip-link:focus{top:12px;color:var(--graphite)}

/* ===== 04 Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(7,26,47,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,var(--orange),var(--amber) 46%,var(--cyan));transition:transform .08s linear}
.header-inner{width:100%;max-width:var(--wrap);margin:0 auto;padding:18px var(--gut) 10px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}
.header-stamp{grid-column:1;justify-self:start;font-family:var(--font-display);font-size:12px;letter-spacing:.24em;color:var(--mist);text-transform:uppercase}
.masthead{grid-column:2;text-align:center}
.brand{display:inline-flex;flex-direction:column;align-items:center;gap:6px;color:var(--ivory)}
.brand:hover{color:var(--ivory)}
.brand-name{font-family:var(--font-display);font-size:clamp(24px,4.2vw,40px);font-weight:900;letter-spacing:.07em;line-height:1.02;color:var(--ivory)}
.brand-tagline{font-size:11px;letter-spacing:.3em;color:var(--mist)}
.header-rail{grid-column:3;justify-self:end;display:flex;align-items:center;gap:12px}
.header-help{font-size:14px;color:var(--mist);border-bottom:1px solid transparent;padding-bottom:2px}
.header-help:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.nav-toggle{display:none;align-items:center;gap:10px;padding:9px 16px;border:1px solid var(--line-strong);border-radius:var(--pill);color:var(--ivory);font-size:14px;cursor:pointer}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-bars{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle-bars span{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .2s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:last-child{transform:translateY(-3px) rotate(-45deg)}
.site-nav{border-top:1px solid rgba(143,166,188,.12)}
.nav-list{width:100%;max-width:var(--wrap);margin:0 auto;padding:12px var(--gut) 18px;display:flex;flex-wrap:wrap;justify-content:center;gap:8px}
.nav-link{display:inline-flex;align-items:center;padding:8px 20px;border-radius:var(--pill);border:1px solid var(--line-strong);font-size:14px;letter-spacing:.04em;color:var(--ivory)}
.nav-link:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(43,224,200,.08)}
.nav-link[aria-current="page"]{background:var(--orange);border-color:var(--orange);color:var(--graphite);font-weight:600;box-shadow:0 0 0 4px rgba(255,122,61,.16)}

/* ===== 05 Footer ===== */
.site-footer{margin-top:clamp(56px,8vw,120px);background:linear-gradient(180deg,rgba(15,61,52,.55),rgba(7,26,47,.98));border-top:1px solid var(--line)}
.footer-inner{width:100%;max-width:var(--wrap);margin:0 auto;padding:clamp(36px,5vw,64px) var(--gut) clamp(22px,3vw,34px);display:grid;grid-template-columns:1.1fr 2fr;gap:clamp(24px,4vw,48px)}
.footer-brand-name{margin:0 0 8px;font-family:var(--font-display);font-size:26px;font-weight:900;letter-spacing:.08em;color:var(--ivory)}
.footer-brand-line{margin:0;font-size:14px;color:var(--mist)}
.footer-meta{margin:16px 0 0;font-size:13px;color:var(--mist)}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,3vw,32px)}
.footer-col-title{margin:0 0 12px;font-size:13px;font-weight:700;letter-spacing:.22em;color:var(--amber);text-transform:uppercase}
.footer-col ul{display:grid;gap:9px}
.footer-col a{font-size:14px;color:var(--ivory);opacity:.86}
.footer-col a:hover{color:var(--cyan);opacity:1}
.footer-col a[aria-current="page"]{color:var(--amber);opacity:1;border-bottom:1px solid var(--amber)}
.footer-contact{grid-column:1 / -1;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;align-items:center;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--mist)}
.footer-contact-line{margin:0;line-height:1.9}
.footer-legal{margin:0;letter-spacing:.06em;color:var(--mist);white-space:nowrap}

/* ===== 06 Layout ===== */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.section{padding:clamp(48px,7vw,96px) 0}
.section--tight{padding:clamp(28px,4vw,52px) 0}
.stack{display:grid;gap:var(--gap)}
.divider{height:1px;margin:0;border:0;background:var(--line)}
.section-head{display:grid;gap:12px;margin-bottom:clamp(20px,3vw,36px);max-width:72ch}
.index{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-display);font-size:12px;letter-spacing:.28em;color:var(--mist);text-transform:uppercase}
.index::before{content:"";width:26px;height:1px;background:var(--cyan)}
.section-title{font-size:clamp(26px,4vw,48px);font-weight:900;letter-spacing:.02em}
.lede{font-size:17px;line-height:1.75;color:var(--mist)}
.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:2fr 1fr}
.grid--stagger{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--stagger > *:nth-child(3n+2){margin-top:clamp(12px,2.4vw,30px)}
.grid--stagger > *:nth-child(3n+3){margin-top:clamp(6px,1.2vw,16px)}

/* ===== 07 Components ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:1px solid transparent;border-radius:var(--pill);font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:transform .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease}
.btn-primary{background:var(--orange);color:var(--graphite)}
.btn-primary:hover{background:var(--amber);color:var(--graphite);transform:translateY(-2px)}
.btn-ghost{border-color:rgba(43,224,200,.5);color:var(--cyan);background:transparent}
.btn-ghost:hover{background:rgba(43,224,200,.12);color:var(--warm);border-color:var(--cyan)}
.btn-sm{padding:8px 18px;font-size:13px}
.card{position:relative;overflow:hidden;padding:clamp(20px,2.6vw,32px);background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-lg)}
.card--accent{border-color:rgba(255,122,61,.45);background:linear-gradient(160deg,rgba(255,122,61,.12),rgba(14,42,71,.9) 62%)}
.board{padding:clamp(18px,2.4vw,28px);background:linear-gradient(180deg,rgba(14,42,71,.92),rgba(7,26,47,.92));border:1px solid var(--line);border-radius:var(--radius-lg);display:grid;gap:14px}
.stat-num{display:block;font-family:var(--font-display);font-size:clamp(46px,9vw,118px);font-weight:900;line-height:.88;letter-spacing:.01em;color:var(--amber)}
.data-row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}
.data-row:last-child{border-bottom:0}
.data-row dt{margin:0;font-size:14px;color:var(--mist)}
.data-row dd{margin:0;font-weight:700;color:var(--amber)}
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 13px;border:1px solid var(--line-strong);border-radius:var(--pill);font-size:12px;letter-spacing:.1em;color:var(--mist)}
.tag--cyan{border-color:rgba(43,224,200,.5);color:var(--cyan)}
.tag--amber{border-color:rgba(255,194,75,.5);color:var(--amber)}
.tag--orange{border-color:rgba(255,122,61,.5);color:var(--orange)}
.breadcrumb{padding-top:20px;font-size:13px;color:var(--mist)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:inline-flex;align-items:center}
.breadcrumb li + li::before{content:"/";margin-right:8px;color:var(--line-strong)}
.breadcrumb a{color:var(--mist)}
.breadcrumb a:hover{color:var(--cyan)}
.anchor-nav{position:sticky;top:112px;display:grid;gap:2px;font-size:14px}
.anchor-nav a{display:block;padding:7px 0 7px 14px;border-left:2px solid var(--line);color:var(--mist)}
.anchor-nav a:hover{color:var(--ivory)}
.anchor-nav a.is-active{color:var(--amber);border-left-color:var(--amber);font-weight:600}
.tabs{display:grid;gap:0}
.tab-list{display:flex;flex-wrap:wrap;gap:6px;width:fit-content;max-width:100%;padding:6px;background:rgba(14,42,71,.78);border:1px solid var(--line);border-radius:var(--pill)}
.tab{padding:9px 20px;border-radius:var(--pill);border:1px solid transparent;color:var(--mist);font-size:14px;cursor:pointer;transition:background-color .18s ease,color .18s ease}
.tab:hover{color:var(--ivory)}
.tab[aria-selected="true"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink-900);font-weight:600}
.tab-panels{padding-top:clamp(18px,2.4vw,28px)}
.tab-panel{padding-top:0}

/* ===== 08 Media ===== */
.media{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-lg);background-image:linear-gradient(135deg,var(--ink-800),var(--green));aspect-ratio:16 / 10}
.media img,.media video{width:100%;height:100%;object-fit:cover}
.media::after{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(143,166,188,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(143,166,188,.09) 1px,transparent 1px);background-size:64px 64px;opacity:.5}
.media[data-placeholder]::before{content:attr(data-placeholder);position:absolute;left:20px;bottom:18px;z-index:2;font-family:var(--font-display);font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--mist)}
.media--wide{aspect-ratio:21 / 9}
.media--tall{aspect-ratio:3 / 4}
.media--square{aspect-ratio:1 / 1}
.media-caption{margin-top:10px;font-size:12px;letter-spacing:.06em;color:var(--mist)}

/* ===== 09 Motion ===== */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
[data-reveal].is-visible{opacity:1;transform:none}

/* ===== 10 Responsive ===== */
@media (max-width:1024px){
  .grid--split{grid-template-columns:1fr}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--stagger{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--stagger > *:nth-child(3n+3){margin-top:0}
  .anchor-nav{position:static;top:auto}
}
@media (max-width:900px){
  .header-inner{grid-template-columns:1fr auto;padding:14px var(--gut) 12px;gap:12px}
  .masthead{grid-column:1;text-align:left}
  .brand{align-items:flex-start}
  .header-stamp{display:none}
  .header-rail{grid-column:2;gap:10px}
  .header-help{display:none}
  .nav-toggle{display:inline-flex}
  .site-nav{position:absolute;left:0;right:0;top:100%;display:none;background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line);box-shadow:0 24px 40px rgba(11,15,20,.5)}
  .site-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:6px;padding:14px var(--gut) 22px}
  .nav-link{justify-content:flex-start;padding:13px 18px;border-radius:var(--radius-md);border-color:transparent;background:rgba(255,255,255,.03)}
  .footer-inner{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:560px){
  body{font-size:15px}
  .brand-name{font-size:22px}
  .brand-tagline{letter-spacing:.2em;font-size:10px}
  .grid--2,.grid--3,.grid--stagger{grid-template-columns:1fr}
  .grid--stagger > *:nth-child(3n+2),
  .grid--stagger > *:nth-child(3n+3){margin-top:0}
  .footer-cols{grid-template-columns:1fr}
  .footer-contact{flex-direction:column;align-items:flex-start}
}

/* ===== 11 Reduced motion ===== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-reveal]{opacity:1;transform:none}
  .scroll-progress{transition:none}
}