/* ===== 1. reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,figcaption,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{max-width:100%}
button,input,summary{font:inherit;color:inherit}
a{color:inherit}
table{border-collapse:collapse}

/* ===== 2. tokens ===== */
:root{
  --ink:#0D1418;
  --bridge:#14313A;
  --dai:#2A5A63;
  --mist:#52707A;
  --cold:#9FB3BE;
  --fog:#EDF1F2;
  --paper:#FBFCFC;
  --orange:#E4762A;
  --amber:#F2B262;
  --teal:#2CC6AE;
  --stoppage:#C8453D;

  --rule:rgba(159,179,190,.22);
  --rule-strong:rgba(159,179,190,.44);
  --rule-soft:rgba(159,179,190,.12);

  --font-head:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC",system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;

  --header-h:44px;
  --shell:1360px;
  --gap:24px;
  --rail:320px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ===== 3. base typography ===== */
body{
  background:var(--ink);
  color:var(--fog);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--teal);text-decoration:none}
a:hover{color:var(--amber)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-align:right}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
section[id],main [id]{scroll-margin-top:calc(var(--header-h) + 16px)}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}

.display,.h1,.h2,.h3{font-family:var(--font-head);font-weight:800;letter-spacing:-.02em;line-height:1.05}
.display{font-size:clamp(36px,6.2vw,64px)}
.h1{font-size:clamp(30px,4.6vw,56px)}
.h2{font-size:clamp(24px,3vw,44px)}
.h3{font-size:clamp(18px,2vw,26px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
.lead{font-size:18px;line-height:1.8;color:rgba(237,241,242,.76);max-width:62ch}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.28em;color:var(--cold)}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;flex:0 0 auto}
.anno-vertical{writing-mode:vertical-rl;font-size:12px;letter-spacing:.28em;color:var(--mist)}
.rule-ticks{height:8px;background-image:repeating-linear-gradient(90deg,currentColor 0 1px,transparent 1px 16px);opacity:.45}

/* ===== 4. helpers / bands ===== */
.container{width:100%;max-width:var(--shell);margin:0 auto;padding-inline:var(--gap)}
.band{position:relative;padding:72px 0}
.band--ink{background:var(--ink)}
.band--bridge{background:var(--bridge)}
.band--light,.band--paper{color:var(--ink);--rule:rgba(13,20,24,.14);--rule-strong:rgba(13,20,24,.28);--rule-soft:rgba(13,20,24,.08)}
.band--light{background:var(--fog)}
.band--paper{background:var(--paper)}
.band--light .lead,.band--paper .lead{color:rgba(13,20,24,.74)}
.band--light .eyebrow,.band--paper .eyebrow{color:var(--mist)}
.band--light .anno-vertical,.band--paper .anno-vertical{color:var(--mist)}

/* ===== 5. buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border:1px solid var(--rule-strong);border-radius:2px;
  background:transparent;color:var(--fog);font-size:14px;letter-spacing:.06em;
  cursor:pointer;text-decoration:none;
  transition:border-color .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease);
}
.btn:hover{border-color:var(--amber);color:#fff}
.btn--primary{background:var(--orange);border-color:var(--orange);color:#14181B;font-weight:700}
.btn--primary:hover{background:var(--amber);border-color:var(--amber);color:#14181B}
.btn--ghost{background:transparent;border-color:var(--rule-strong);color:var(--cold)}
.btn--ghost:hover{color:#fff}
.btn--compact{padding:6px 12px;font-size:12px;letter-spacing:.1em}

/* ===== 6. frame / panel / table / media ===== */
.frame{
  position:relative;border:1px solid var(--rule);padding:28px;
  background-color:rgba(20,49,58,.28);
  background-image:
    linear-gradient(var(--amber),var(--amber)),linear-gradient(var(--amber),var(--amber)),
    linear-gradient(var(--amber),var(--amber)),linear-gradient(var(--amber),var(--amber)),
    linear-gradient(var(--amber),var(--amber)),linear-gradient(var(--amber),var(--amber)),
    linear-gradient(var(--amber),var(--amber)),linear-gradient(var(--amber),var(--amber));
  background-size:12px 1px,1px 12px,12px 1px,1px 12px,12px 1px,1px 12px,12px 1px,1px 12px;
  background-position:left top,left top,right top,right top,left bottom,left bottom,right bottom,right bottom;
  background-repeat:no-repeat;
}
.panel{border:1px solid var(--rule);background:rgba(20,49,58,.36);padding:20px}
.band--light .panel,.band--paper .panel{background:rgba(159,179,190,.14)}
.panel__title{margin:0 0 12px;font-size:12px;letter-spacing:.24em;color:var(--cold);font-weight:400}

.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;
  background:linear-gradient(90deg,transparent 0,transparent 92%,rgba(13,20,24,.05) 100%)}
.data-table{width:100%;min-width:520px;font-size:14px;background:var(--paper);color:var(--ink)}
.data-table caption{text-align:left;padding:0 0 12px;font-size:12px;letter-spacing:.2em;color:var(--mist)}
.data-table th,.data-table td{padding:9px 14px;border-bottom:1px solid rgba(13,20,24,.12);text-align:left;height:40px}
.data-table th{font-size:12px;font-weight:600;letter-spacing:.12em;color:#3E5560;background:rgba(159,179,190,.18)}
.data-table td{font-variant-numeric:tabular-nums}
.data-table tbody tr:hover{background:rgba(44,198,174,.07)}
.data-table th.num,.data-table td.num{text-align:right;font-family:var(--font-mono)}

.media-frame{
  position:relative;display:block;margin:0;overflow:hidden;
  border:1px solid var(--rule);aspect-ratio:16/10;
  background:linear-gradient(160deg,var(--bridge),var(--ink));
}
.media-frame img{display:block;width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:3px 3px;
}
.media-frame__cap{
  position:absolute;left:0;right:0;bottom:0;z-index:1;padding:10px 14px;
  font-size:12px;letter-spacing:.12em;color:rgba(237,241,242,.9);
  background:linear-gradient(to top,rgba(13,20,24,.88),rgba(13,20,24,0));
}

/* ===== 7. misc components ===== */
.breadcrumb{font-size:12px;letter-spacing:.12em;color:var(--mist)}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px}
.breadcrumb li+li::before{content:"/";margin-right:8px;color:var(--rule-strong)}
.breadcrumb a{color:var(--cold);text-decoration:none}
.breadcrumb a:hover{color:var(--teal)}
.layout-split{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);gap:40px;align-items:start}
.rail{position:sticky;top:calc(var(--header-h) + 16px)}
.seg{display:inline-flex;border:1px solid var(--rule-strong);border-radius:2px;overflow:hidden}
.seg__btn{appearance:none;background:transparent;border:0;border-right:1px solid var(--rule);padding:7px 14px;
  font-size:13px;color:var(--cold);cursor:pointer;transition:background-color .2s var(--ease),color .2s var(--ease)}
.seg__btn:last-child{border-right:0}
.seg__btn:hover{color:#fff}
.seg__btn.is-active,.seg__btn[aria-pressed="true"]{background:rgba(44,198,174,.14);color:var(--teal)}
.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 8px;border:1px solid var(--rule);
  border-radius:2px;font-size:11px;letter-spacing:.14em;color:var(--cold)}
.tag--active{border-color:var(--teal);color:var(--teal);background:rgba(44,198,174,.08)}
.delta--up{color:var(--orange)}
.delta--down{color:var(--cold)}
.delta--flat{color:var(--mist)}
.stoppage{color:var(--stoppage);font-family:var(--font-mono)}
.stoppage-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--stoppage);
  animation:stoppage-breathe 2.4s ease-in-out infinite}
@keyframes stoppage-breathe{0%,100%{opacity:.45}50%{opacity:1}}

/* ===== 8. skip link ===== */
.skip-link{
  position:fixed;left:12px;top:-64px;z-index:200;
  padding:9px 16px;border-radius:2px;background:var(--orange);color:#10161A;
  font-size:14px;letter-spacing:.06em;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:8px;color:#10161A}

/* ===== 9. header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(13,20,24,.96);
  border-bottom:1px solid var(--rule);
  color:var(--fog);
}
@supports (backdrop-filter:blur(8px)){
  .site-header{background:rgba(13,20,24,.86);backdrop-filter:blur(10px)}
}
.header-gauge{position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none}
.header-gauge__fill{display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--dai),var(--teal))}
.header-inner{
  position:relative;display:flex;align-items:center;gap:18px;
  max-width:var(--shell);margin:0 auto;padding:0 var(--gap);height:var(--header-h);
}

.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--fog);text-decoration:none}
.brand:hover{color:var(--fog)}
.brand-mark{position:relative;width:10px;height:10px;border:1px solid var(--orange);transform:rotate(45deg);flex:0 0 auto}
.brand-mark::after{content:"";position:absolute;inset:2px;background:var(--orange)}
.brand-lines{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-family:var(--font-head);font-weight:800;font-size:15px;letter-spacing:.08em}
.brand-domain{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--mist)}

.nav-toggle{
  display:none;align-items:center;gap:9px;height:30px;padding:0 11px;
  border:1px solid var(--rule);border-radius:2px;background:transparent;
  color:var(--fog);font-size:12px;letter-spacing:.14em;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--amber)}
.nav-toggle__bars{position:relative;display:block;width:16px;height:1px;background:var(--fog);transition:background-color .2s var(--ease)}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:1px;background:var(--fog);
  transition:transform .2s var(--ease);
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.site-header[data-nav-open] .nav-toggle__bars{background:transparent}
.site-header[data-nav-open] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.site-header[data-nav-open] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}

.primary-nav{margin-left:8px}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{list-style:none}
.nav-link{
  position:relative;display:flex;align-items:center;height:var(--header-h);padding:0 11px;
  font-size:14px;letter-spacing:.04em;color:rgba(237,241,242,.72);text-decoration:none;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:11px;right:11px;bottom:8px;height:2px;background:transparent;
  transition:background-color .2s var(--ease);
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{background:rgba(242,178,98,.38)}
.nav-link[aria-current="page"]{color:#fff;font-weight:700}
.nav-link[aria-current="page"]::after{
  background:linear-gradient(90deg,var(--orange) 0 62%,rgba(228,118,42,.26) 62% 100%);
}

.header-tools{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.tool-btn{
  display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 11px;
  border:1px solid var(--rule);border-radius:2px;background:transparent;
  color:var(--fog);font-size:12px;letter-spacing:.08em;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tool-btn:hover{border-color:var(--amber);color:#fff}
.tool-btn__label{color:var(--mist);letter-spacing:.14em}

.season-switch{position:relative}
.season-switch > summary{list-style:none}
.season-switch > summary::-webkit-details-marker{display:none}
.season-switch[open] > summary{border-color:var(--amber);color:#fff}
.season-panel{
  position:absolute;top:calc(100% + 8px);right:0;z-index:120;min-width:196px;
  padding:6px;background:var(--bridge);border:1px solid var(--rule);border-radius:2px;
  box-shadow:0 16px 32px rgba(0,0,0,.5);
}
.season-panel__link{display:block;padding:8px 10px;border-radius:2px;font-size:13px;
  color:rgba(237,241,242,.82);text-decoration:none;transition:background-color .2s var(--ease),color .2s var(--ease)}
.season-panel__link:hover{background:rgba(44,198,174,.12);color:#fff}

.status-chip{display:inline-flex;align-items:center;gap:7px;font-size:11px;letter-spacing:.12em;color:var(--mist)}
.status-dot{
  width:7px;height:7px;border-radius:50%;background:var(--teal);flex:0 0 auto;
  animation:status-pulse 2.4s ease-in-out infinite;
}
@keyframes status-pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(44,198,174,.45)}
  50%{box-shadow:0 0 0 5px rgba(44,198,174,0)}
}
.status-chip__text{white-space:nowrap}

.search-panel{border-top:1px solid var(--rule);background:var(--bridge)}
.search-panel[hidden]{display:none}
.search-panel__inner{
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  max-width:var(--shell);margin:0 auto;padding:14px var(--gap);
}
.search-panel__label{font-size:12px;letter-spacing:.16em;color:var(--cold)}
.search-panel__input{
  flex:1 1 260px;min-width:0;height:34px;padding:0 12px;
  background:rgba(13,20,24,.62);border:1px solid var(--rule-strong);border-radius:2px;
  color:var(--fog);font-family:var(--font-mono);font-size:13px;
}
.search-panel__input::placeholder{color:var(--mist)}
.search-panel__hint{margin:0;font-size:12px;letter-spacing:.04em;color:var(--mist)}

[data-searchable]{transition:opacity .2s var(--ease)}
[data-searchable].is-dimmed{opacity:.26}
[data-searchable].is-match{box-shadow:inset 2px 0 0 0 var(--teal)}

/* ===== 10. footer ===== */
.site-footer{position:relative;background:var(--ink);color:var(--fog);border-top:1px solid var(--rule);padding-bottom:32px}
.footer-gauge{height:10px;opacity:.5;background-image:repeating-linear-gradient(90deg,rgba(159,179,190,.5) 0 1px,transparent 1px 20px)}
.footer-inner{
  display:grid;grid-template-columns:minmax(240px,1.05fr) 2fr;gap:40px;
  max-width:var(--shell);margin:0 auto;padding:44px var(--gap) 32px;
}
.footer-brand__mark{font-family:var(--font-head);font-weight:800;font-size:22px;letter-spacing:.08em}
.footer-brand__domain{font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--mist);margin-top:6px}
.footer-brand__line{margin-top:16px;max-width:34ch;font-size:14px;line-height:1.85;color:rgba(237,241,242,.68)}
.footer-contact{margin-top:18px;font-size:13px;line-height:2.1;color:var(--mist)}
.footer-contact .mono{color:var(--cold)}
.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.footer-col__title{font-size:12px;letter-spacing:.28em;color:var(--cold);font-weight:400}
.footer-col__list{margin-top:12px;display:grid;gap:2px}
.footer-link{
  display:inline-block;padding:6px 0;font-size:14px;color:rgba(237,241,242,.78);
  text-decoration:none;border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-link:hover{color:var(--teal);border-color:rgba(44,198,174,.5)}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 28px;
  max-width:var(--shell);margin:0 auto;padding:22px var(--gap) 0;
  border-top:1px solid var(--rule);font-size:12px;letter-spacing:.04em;color:var(--mist);
}
.footer-base__note{flex:1 1 300px;color:rgba(237,241,242,.6)}
.footer-base__legal{font-family:var(--font-mono);letter-spacing:.08em}
.footer-base__copy{font-family:var(--font-mono)}
.to-top{
  position:fixed;right:20px;bottom:20px;z-index:90;
  padding:8px 13px;border:1px solid var(--rule-strong);border-radius:2px;
  background:rgba(20,49,58,.92);color:var(--fog);font-size:12px;letter-spacing:.1em;cursor:pointer;
  opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible}
.to-top:hover{border-color:var(--amber);color:#fff}

/* ===== 11. reveal ===== */
.has-js [data-reveal]{opacity:0;transform:translateY(12px);
  transition:opacity .42s var(--ease),transform .42s var(--ease)}
.has-js [data-reveal].is-visible{opacity:1;transform:none}

/* ===== 12. responsive ===== */
@media (min-width:1500px){
  .container,.header-inner,.search-panel__inner,.footer-inner,.footer-base{max-width:1552px;padding-inline:96px}
}
@media (max-width:1200px){
  :root{--rail:280px}
  .layout-split{gap:28px}
  .header-tools{gap:8px}
}
@media (max-width:1080px){
  .layout-split{grid-template-columns:minmax(0,1fr)}
  .rail{position:static}
}
@media (max-width:980px){
  .nav-toggle{display:inline-flex;margin-left:auto}
  .header-tools{margin-left:0}
  .primary-nav{margin-left:0}
  .primary-nav{
    position:absolute;top:var(--header-h);left:0;right:0;display:none;
    background:var(--ink);border-bottom:1px solid var(--rule-strong);
    box-shadow:0 18px 30px rgba(0,0,0,.5);z-index:110;
  }
  .site-header[data-nav-open] .primary-nav{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding:6px 0}
  .nav-link{height:auto;padding:12px 24px;font-size:15px;border-bottom:1px solid var(--rule-soft)}
  .nav-link::after{left:0;right:auto;top:10px;bottom:10px;width:2px;height:auto}
  .nav-link[aria-current="page"]::after{background:var(--orange)}
  .header-tools .status-chip,.header-tools .btn--primary{display:none}
  .footer-inner{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:36px}
}
@media (max-width:720px){
  body{font-size:16px}
  .band{padding:52px 0}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
  .search-panel__inner{padding-block:12px}
}
@media (max-width:560px){
  .brand-domain{display:none}
  .season-switch{display:none}
  .footer-nav{grid-template-columns:minmax(0,1fr)}
  .to-top{right:12px;bottom:12px}
  .frame{padding:20px}
}

/* ===== 13. reduced motion ===== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.15s !important;
  }
  .has-js [data-reveal]{opacity:1;transform:none}
  .status-dot,.stoppage-dot{animation:none}
}