/* ===== 0. Reset ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:104px}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse}
[hidden]{display:none !important}

/* ===== 1. Tokens ===== */
:root{
  --green:#0B3D2E;
  --green-2:#14503C;
  --orange:#FF6A13;
  --orange-soft:#FFA45C;
  --orange-ink:#C2480A;
  --blue:#1F6FEB;
  --blue-mist:#D6E6FF;
  --paper:#F6F4EE;
  --card:#FFFFFF;
  --ink:#10201A;
  --muted:#5A6B63;
  --live:#2FBF71;
  --line:rgba(11,61,46,.12);
  --line-strong:rgba(11,61,46,.24);
  --rail-w:104px;
  --topline-h:40px;
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"JetBrains Mono",Menlo,Consolas,monospace;
  --shadow-card:0 26px 54px -42px rgba(11,61,46,.62);
  --gutter:clamp(20px,5vw,72px);
}

/* ===== 2. Base ===== */
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(11,61,46,.05) 0 1px,transparent 1px 9px);
}
::selection{background:var(--orange-soft);color:var(--ink)}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:4px}
body.is-nav-open{overflow:hidden}

.skip-link{
  position:fixed;top:0;left:0;z-index:200;
  background:var(--orange);color:#fff;
  padding:12px 22px 12px 16px;
  border-radius:0 0 18px 0;
  font-size:13px;letter-spacing:.12em;font-weight:600;
  transform:translateY(-120%);
  transition:transform .24s ease;
}
.skip-link:focus{transform:translateY(0)}

/* ===== 3. Typography ===== */
.display{
  font-weight:200;
  font-size:clamp(2.6rem,7vw,5.5rem);
  line-height:1.02;
  letter-spacing:-.02em;
  color:var(--green);
}
.section-title{
  font-weight:700;
  font-size:clamp(1.5rem,3vw,2.25rem);
  line-height:1.22;
  letter-spacing:-.01em;
  color:var(--green);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);font-weight:600;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--orange);flex:none}
.eyebrow-num{font-family:var(--font-mono);color:var(--orange-ink);font-weight:600;letter-spacing:0}
.lede{font-size:17px;line-height:1.9;color:var(--muted);max-width:34em}
.prose{font-size:17px;line-height:1.78;max-width:34em;color:var(--ink)}
.prose p + p{margin-top:1em}
.prose a{border-bottom:1px solid var(--blue);color:var(--blue)}
.num{font-family:var(--font-mono);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:0}

/* ===== 4. Layout ===== */
.container{width:min(1180px,100% - var(--gutter));margin-inline:auto}
.container--wide{width:min(1460px,100% - clamp(24px,3vw,56px));margin-inline:auto}
.section{padding-block:clamp(48px,8vw,112px)}
.section--tight{padding-block:clamp(30px,5vw,64px)}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:18px;margin-bottom:clamp(24px,4vw,44px);
}
.ed-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(16px,2.4vw,32px)}
.ed-main{grid-column:1 / span 8}
.ed-aside{grid-column:10 / span 3}
.ed-full{grid-column:1 / -1}
.grid-auto{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:clamp(16px,2vw,28px)}

/* ===== 5. Buttons / tags ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 26px;
  border-radius:999px 999px 999px 6px;
  font-size:15px;font-weight:600;letter-spacing:.06em;
  transition:transform .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
}
.btn--primary{background:var(--orange);color:#fff;box-shadow:0 18px 34px -24px rgba(255,106,19,.95)}
.btn--primary:hover{background:#E85C09;transform:translateY(-2px)}
.btn--ghost{border:1px solid var(--line-strong);color:var(--green);background:transparent}
.btn--ghost:hover{border-color:var(--green);background:#fff;transform:translateY(-2px)}
.btn--blue{background:var(--blue);color:#fff}
.btn--blue:hover{background:#155ecb;transform:translateY(-2px)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--blue-mist);color:var(--green);
  font-size:12px;letter-spacing:.1em;font-weight:600;
}
.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--live)}

/* ===== 6. Cards / stats ===== */
.card{
  background:var(--card);
  border:1px solid rgba(11,61,46,.07);
  border-radius:var(--r-xl) var(--r-xl) var(--r-xl) 8px;
  padding:clamp(20px,2.4vw,32px);
  box-shadow:var(--shadow-card);
}
.card--mist{background:var(--blue-mist);border-color:rgba(31,111,235,.16)}
.card--green{background:var(--green);color:#fff;border-color:transparent}
.card--green .card-title,.card--green .section-title{color:#fff}
.card-title{font-size:18px;font-weight:700;letter-spacing:.01em;color:var(--green);margin-bottom:8px}
.card-text{font-size:15px;line-height:1.8;color:var(--muted)}
.card--green .card-text{color:rgba(255,255,255,.8)}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}
.stat{background:#fff;border-top:3px solid var(--orange);border-radius:var(--r-md) var(--r-md) var(--r-md) 4px;padding:18px 20px}
.stat-value{font-family:var(--font-mono);font-weight:600;font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.1;color:var(--green)}
.stat-label{font-size:12px;letter-spacing:.14em;color:var(--muted);margin-top:6px}

/* ===== 7. Accordion ===== */
.accordion{display:flex;flex-direction:column;gap:10px}
.acc-item{
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg) var(--r-lg) var(--r-lg) 6px;
  overflow:hidden;transition:border-color .24s ease,box-shadow .24s ease;
}
.acc-item[data-open]{border-color:rgba(255,106,19,.6);box-shadow:0 22px 44px -38px rgba(255,106,19,.9)}
.acc-trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--green);
}
.acc-trigger:hover{background:var(--blue-mist)}
.acc-index{font-family:var(--font-mono);font-size:13px;color:var(--orange-ink);margin-right:12px;font-weight:600}
.acc-icon{position:relative;width:20px;height:20px;flex:none}
.acc-icon::before,.acc-icon::after{
  content:"";position:absolute;left:0;right:0;top:50%;height:2px;
  background:var(--green);border-radius:2px;transform:translateY(-50%);
}
.acc-icon::after{transform:translateY(-50%) rotate(90deg);transition:transform .3s ease}
.acc-item[data-open] .acc-icon::after{transform:translateY(-50%) rotate(0deg)}
.acc-panel{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ===== 8. Index list / aside note ===== */
.index-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.index-item{
  display:grid;grid-template-columns:52px 1fr auto;gap:14px;align-items:baseline;
  padding:16px 12px;border-bottom:1px solid var(--line);
  transition:background-color .2s ease,padding-left .2s ease;
}
.index-item:hover{background:#fff;padding-left:18px}
.index-num{font-family:var(--font-mono);font-weight:600;color:var(--orange-ink);font-size:14px}
.index-body{font-size:16px;font-weight:600;color:var(--green)}
.index-meta{font-size:13px;color:var(--muted);font-family:var(--font-mono)}
.aside-note{
  background:var(--blue-mist);
  border-radius:var(--r-lg) var(--r-lg) var(--r-lg) 6px;
  padding:22px;font-size:14.5px;line-height:1.85;color:var(--green);
}
.aside-note-title{font-size:12px;letter-spacing:.16em;font-weight:700;color:var(--blue);margin-bottom:10px}

/* ===== 9. Table ===== */
.table-wrap{overflow-x:auto;border-radius:var(--r-lg);border:1px solid var(--line);background:#fff}
.data-table{width:100%;min-width:520px;font-size:14.5px}
.data-table th,.data-table td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
.data-table thead th{background:var(--green);color:#fff;font-size:12.5px;letter-spacing:.1em;font-weight:600}
.data-table tbody tr:nth-child(even){background:var(--blue-mist)}
.data-table td.num{color:var(--green)}

/* ===== 10. Media frame ===== */
.media-frame{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl) var(--r-xl) var(--r-xl) 8px;
  background:linear-gradient(135deg,var(--green-2),var(--green));
  isolation:isolate;
}
.media-frame > img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:auto -12% -34% -12%;height:48%;
  background:linear-gradient(90deg,rgba(255,106,19,.34),rgba(31,111,235,.22));
  transform:skewY(-6deg);pointer-events:none;
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}

/* ===== 11. Breadcrumb ===== */
.breadcrumb{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;letter-spacing:.08em;color:var(--muted)}
.breadcrumb li + li::before{content:"/";margin-right:8px;color:rgba(11,61,46,.3)}
.breadcrumb a:hover{color:var(--orange-ink)}
.breadcrumb [aria-current="page"]{color:var(--green);font-weight:600}

/* ===== 12. Frame header ===== */
.site-frame{position:relative;z-index:90}
.progress-bar{
  position:fixed;top:0;left:0;width:100%;height:3px;z-index:100;
  background:linear-gradient(90deg,var(--orange),var(--orange-soft));
  transform:scaleX(0);transform-origin:0 50%;pointer-events:none;
}
.frame-rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);
  z-index:90;overflow-y:auto;overscroll-behavior:contain;
  display:flex;flex-direction:column;gap:18px;
  padding:22px 12px 18px;
  background:linear-gradient(180deg,#0B3D2E 0%,#0B3D2E 58%,#14503C 100%);
  color:#fff;
  box-shadow:inset -1px 0 0 rgba(255,255,255,.1);
}
.rail-brand{display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}
.rail-mark{
  width:44px;height:44px;display:grid;place-items:center;
  background:var(--orange);color:#fff;
  border-radius:16px 16px 16px 4px;
  font-size:20px;font-weight:700;
  box-shadow:0 14px 26px -16px rgba(255,106,19,.95);
}
.rail-wordmark{
  writing-mode:vertical-rl;text-orientation:upright;
  font-size:12.5px;letter-spacing:.22em;line-height:1.4;
  color:rgba(255,255,255,.82);
}
.rail-nav{display:flex;flex-direction:column;gap:8px;flex:1 1 auto;min-height:0}
.rail-nav-title{display:none}
.rail-list{display:flex;flex-direction:column;gap:4px}
.rail-link{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:9px 6px;
  border-radius:14px 14px 14px 4px;
  color:rgba(255,255,255,.78);
  transition:background-color .24s ease,color .24s ease,transform .24s ease;
}
.rail-index{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--orange)}
.rail-label{font-size:12.5px;letter-spacing:.05em;line-height:1.35;text-align:center}
.rail-link:hover{background:rgba(255,255,255,.1);color:#fff;transform:translateX(3px)}
.rail-link[aria-current="page"]{background:var(--orange);color:#fff;box-shadow:0 16px 28px -18px rgba(255,106,19,1)}
.rail-link[aria-current="page"] .rail-index{color:rgba(255,255,255,.85)}
.rail-actions{margin-top:auto}
.rail-cta{width:100%;padding:12px 8px;font-size:13px;letter-spacing:.08em;border-radius:16px 16px 16px 4px}

.frame-burger{display:none;align-items:center;gap:10px;color:#fff;padding:8px 12px;border:1px solid rgba(255,255,255,.3);border-radius:12px;font-size:12px;letter-spacing:.14em}
.burger-bars{display:flex;flex-direction:column;gap:4px;width:18px}
.burger-bars > span{display:block;height:2px;background:currentColor;border-radius:2px;transition:transform .3s ease,opacity .3s ease}
.site-frame[data-open] .burger-bars > span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-frame[data-open] .burger-bars > span:nth-child(2){opacity:0}
.site-frame[data-open] .burger-bars > span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.frame-topline{
  position:fixed;top:0;left:var(--rail-w);right:0;height:var(--topline-h);z-index:70;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 clamp(16px,3vw,40px);
  background:rgba(246,244,238,.94);
  border-bottom:1px solid var(--line);
  font-size:12px;letter-spacing:.12em;color:var(--muted);
}
.topline-rhythm{display:inline-flex;align-items:center;gap:9px;color:var(--green);font-weight:600;letter-spacing:.1em}
.dot{width:8px;height:8px;border-radius:50%;background:var(--live);box-shadow:0 0 0 4px rgba(47,191,113,.18);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(.86)}}
.topline-tools{display:flex;align-items:center;gap:6px}
.tool-btn,.tool-link{
  padding:6px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.12em;color:var(--muted);
  border:1px solid transparent;transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.tool-btn:hover,.tool-link:hover{color:var(--green);border-color:var(--line-strong);background:#fff}
.tool-btn[aria-expanded="true"]{background:var(--green);border-color:var(--green);color:#fff}

.frame-search{
  position:fixed;top:var(--topline-h);right:0;z-index:75;
  width:min(420px,92vw);
  padding:20px 22px 20px;
  background:#fff;
  border-left:3px solid var(--orange);
  border-radius:0 0 0 26px;
  box-shadow:0 30px 60px -36px rgba(11,61,46,.7);
}
.search-label{display:block;font-size:12px;letter-spacing:.16em;color:var(--muted);margin-bottom:8px}
.search-input{
  width:100%;padding:12px 14px;
  background:var(--paper);color:var(--ink);
  border:1px solid var(--line-strong);border-radius:14px;
}
.search-input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(31,111,235,.2)}
.search-status{margin-top:10px;font-size:13px;color:var(--muted)}
.search-status[data-state="hit"]{color:var(--green);font-weight:600}

.frame-scrim{display:none}

/* ===== 13. Footer ===== */
.site-footer{
  position:relative;
  background:var(--green);
  color:rgba(255,255,255,.8);
  padding:clamp(44px,6vw,84px) var(--gutter) 26px;
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--orange) 0 34%,var(--blue) 34% 46%,var(--green-2) 46% 100%);
}
.site-footer::after{
  content:"";position:absolute;top:-30%;right:-12%;width:46%;height:120%;
  background:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 1px,transparent 1px 10px);
  transform:skewX(-12deg);pointer-events:none;
}
.footer-grid{
  position:relative;z-index:1;
  display:grid;
  grid-template-columns:minmax(240px,1.5fr) repeat(3,minmax(130px,1fr));
  gap:clamp(24px,4vw,56px);
}
.footer-wordmark{font-size:20px;font-weight:700;letter-spacing:.1em;color:#fff}
.footer-note{margin-top:12px;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.62);max-width:30em}
.footer-note--mono{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;color:rgba(255,255,255,.5)}
.footer-col-title{font-size:12px;letter-spacing:.18em;font-weight:600;color:var(--orange-soft);margin-bottom:14px}
.footer-links li + li{margin-top:10px}
.footer-links a{font-size:14.5px;color:rgba(255,255,255,.78);border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.footer-links a:hover{color:#fff;border-bottom-color:var(--orange)}
.footer-contact{
  position:relative;z-index:1;
  margin-top:clamp(28px,4vw,52px);
  padding:20px 0 0 18px;
  border-left:3px solid var(--orange);
  display:flex;flex-wrap:wrap;gap:8px 32px;
}
.footer-contact-line{font-size:13.5px;letter-spacing:.04em;color:rgba(255,255,255,.72);font-family:var(--font-mono)}
.footer-bottom{
  position:relative;z-index:1;
  margin-top:clamp(24px,3.5vw,44px);
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.16);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:12.5px;letter-spacing:.1em;color:rgba(255,255,255,.55);
}
.footer-legal{font-family:var(--font-mono)}
.footer-meta{letter-spacing:.14em}
.to-top{
  padding:9px 18px;border-radius:999px;
  border:1px solid rgba(255,255,255,.32);color:#fff;
  font-size:12.5px;letter-spacing:.14em;
  transition:background-color .2s ease,border-color .2s ease,color .2s ease;
}
.to-top:hover{background:var(--orange);border-color:var(--orange);color:#fff}

/* ===== 14. Reveal ===== */
html.js [data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.8,.2,1)}
html.js [data-reveal].is-visible{opacity:1;transform:none}

/* ===== 15. Desktop shell offset ===== */
@media (min-width:900px){
  body{padding-left:var(--rail-w);padding-top:var(--topline-h)}
}

/* ===== 16. Tablet ===== */
@media (max-width:1199px){
  .ed-main{grid-column:1 / span 12}
  .ed-aside{grid-column:1 / span 12}
  .container{width:min(100%,100% - clamp(32px,6vw,64px))}
}

/* ===== 17. Mobile frame ===== */
@media (max-width:899px){
  html{scroll-padding-top:96px}
  body{padding:0}
  .site-frame{position:sticky;top:0;z-index:95;background:var(--green)}
  .frame-rail{
    position:relative;inset:auto;width:100%;height:56px;
    flex-direction:row;align-items:center;justify-content:space-between;gap:10px;
    padding:0 14px;overflow:visible;
    background:var(--green);box-shadow:none;
  }
  .rail-brand{flex-direction:row;align-items:center;gap:10px;text-align:left}
  .rail-mark{width:32px;height:32px;border-radius:11px 11px 11px 3px;font-size:16px}
  .rail-wordmark{writing-mode:horizontal-tb;font-size:14px;letter-spacing:.14em;color:#fff}
  .rail-actions{display:none}
  .frame-burger{display:inline-flex}
  .rail-nav{
    position:fixed;left:0;right:0;bottom:0;top:auto;z-index:96;
    display:flex;flex-direction:column;gap:12px;
    max-height:80vh;overflow-y:auto;
    padding:22px 18px calc(26px + env(safe-area-inset-bottom));
    background:#fff;color:var(--ink);
    border-radius:28px 28px 0 0;
    box-shadow:0 -34px 64px -32px rgba(11,61,46,.6);
    transform:translateY(105%);
    transition:transform .38s cubic-bezier(.2,.8,.2,1);
  }
  .site-frame[data-open] .rail-nav{transform:translateY(0)}
  .rail-nav-title{display:block;font-size:12px;letter-spacing:.2em;color:var(--muted);font-weight:600}
  .rail-list{gap:6px}
  .rail-link{
    flex-direction:row;justify-content:flex-start;align-items:center;gap:12px;
    padding:13px 14px;
    background:var(--paper);color:var(--ink);
    border-left:3px solid transparent;
    border-radius:16px 16px 16px 4px;
  }
  .rail-index{font-size:12px;color:var(--orange-ink)}
  .rail-label{font-size:16px;text-align:left;letter-spacing:.04em}
  .rail-link:hover{transform:none;background:var(--blue-mist)}
  .rail-link[aria-current="page"]{background:var(--green);color:#fff;border-left-color:var(--orange)}
  .rail-link[aria-current="page"] .rail-index{color:var(--orange-soft)}
  .frame-scrim{
    display:block;position:fixed;inset:0;z-index:94;
    background:rgba(11,61,46,.52);
    opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
  }
  .site-frame[data-open] .frame-scrim{opacity:1;visibility:visible}
  .frame-topline{
    position:static;height:30px;left:auto;right:auto;
    padding:0 14px;font-size:11px;letter-spacing:.08em;background:var(--paper);
  }
  .topline-rhythm{font-size:11px}
  .tool-link{display:none}
  .frame-search{
    position:fixed;top:86px;left:0;right:0;width:auto;
    border-left:0;border-top:3px solid var(--orange);
    border-radius:0 0 22px 22px;
  }
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{padding-left:14px;gap:6px 20px}
  .footer-bottom{justify-content:flex-start}
  .index-item{grid-template-columns:40px 1fr;row-gap:4px}
  .index-meta{grid-column:2}
}

@media (max-width:519px){
  .footer-grid{grid-template-columns:1fr}
  .footer-contact-line{font-size:12.5px}
}

/* ===== 18. 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;
  }
  html.js [data-reveal]{opacity:1;transform:none}
  .dot{box-shadow:none}
}