:root{
  --green:#1F7A3D;
  --green-deep:#0E3B22;
  --slate:#B7BDB7;
  --paper:#F5F1E8;
  --whistle:#FF6B2C;
  --score-red:#D7263D;
  --ink:#142018;
  --sand:#E8E3D7;
  --night:#1B4D4B;
  --display:"Oswald","Barlow Condensed","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --mono:"Roboto Mono","IBM Plex Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --radius-lg:28px;
  --radius-md:16px;
  --radius-sm:10px;
  --radius-pill:999px;
  --ease:cubic-bezier(.3,.7,.4,1);
  --dur:180ms;
  --shell:1360px;
  --gutter:clamp(16px,3vw,32px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:96px}
body{
  margin:0;min-height:100vh;
  font-family:var(--body);font-size:16px;line-height:1.75;
  color:var(--ink);background:var(--paper);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,figure,blockquote,ul,ol,dl{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
::selection{background:var(--whistle);color:var(--ink)}
:focus-visible{outline:3px solid var(--whistle);outline-offset:2px;border-radius:6px}

/* ---------- layout ---------- */
.container{width:100%;max-width:var(--shell);margin:0 auto;padding:0 var(--gutter)}
.container--narrow{max-width:880px}
.section{padding:clamp(40px,6vw,84px) 0;position:relative}
.section--paper{background:var(--paper)}
.section--sand{background:var(--sand)}
.section--slate{background:var(--slate)}
.section--green{background:var(--green);color:#fff}
.section--night{background:var(--night);color:var(--paper)}
.section--deep{background:var(--green-deep);color:var(--paper)}
.section--deep .lede,.section--night .lede,.section--green .lede{color:rgba(245,241,232,.82)}

.grid{display:grid;gap:clamp(20px,3vw,36px)}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
.grid--9-3{grid-template-columns:minmax(0,9fr) minmax(0,3fr)}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}

/* ---------- type ---------- */
.page-head{padding:clamp(28px,5vw,56px) 0 clamp(18px,3vw,30px)}
.page-title{
  font-family:var(--display);font-weight:700;
  font-size:clamp(34px,6.4vw,74px);line-height:1.02;letter-spacing:-.012em;
}
.page-intro{margin-top:16px;max-width:64ch;font-size:clamp(15px,1.4vw,17px);line-height:1.9;color:rgba(20,32,24,.78)}
.section-title{font-family:var(--display);font-weight:700;font-size:clamp(24px,3.4vw,42px);line-height:1.14;letter-spacing:.005em}
.kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--green);font-weight:600;
}
.kicker::before{content:"";width:22px;height:2px;background:var(--whistle)}
.section--deep .kicker,.section--night .kicker{color:rgba(245,241,232,.72)}
.lede{font-size:clamp(15.5px,1.5vw,18px);line-height:1.88;color:rgba(20,32,24,.78);max-width:62ch}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.tag{
  display:inline-block;padding:3px 10px;border-radius:6px;
  background:var(--score-red);color:#fff;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;
}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;color:var(--green);
  border-bottom:2px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.link-arrow::after{content:"→";transition:transform var(--dur) var(--ease)}
.link-arrow:hover{color:var(--green-deep);border-bottom-color:var(--whistle)}
.link-arrow:hover::after{transform:translateX(4px)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-family:var(--body);font-size:14px;font-weight:700;letter-spacing:.02em;
  cursor:pointer;white-space:nowrap;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),
             color var(--dur) var(--ease),border-color var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease);
}
.btn--sm{padding:9px 16px;font-size:13px}
.btn--block{width:100%}
.btn--accent{background:var(--whistle);color:var(--ink);border-color:var(--whistle);box-shadow:0 2px 0 rgba(0,0,0,.18)}
.btn--accent:hover{background:#FF824F;border-color:#FF824F;transform:translateY(-2px)}
.btn--solid{background:var(--green);color:#fff;border-color:var(--green)}
.btn--solid:hover{background:#1A6634;border-color:#1A6634;transform:translateY(-2px)}
.btn--light{background:var(--paper);color:var(--ink);border-color:var(--paper)}
.btn--light:hover{background:#fff;transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--ink);border-color:rgba(20,32,24,.26)}
.btn--ghost:hover{background:var(--sand);border-color:rgba(20,32,24,.5);transform:translateY(-2px)}
.btn--outline{background:transparent;color:var(--ink);border-color:rgba(20,32,24,.3)}
.btn--outline:hover{background:var(--sand);border-color:var(--ink)}
.btn--on-dark{background:transparent;color:var(--paper);border-color:rgba(245,241,232,.42)}
.btn--on-dark:hover{background:rgba(245,241,232,.12);border-color:var(--paper);transform:translateY(-2px)}

/* ---------- header ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:300;
  transform:translateY(-180%);
  padding:10px 18px;border-radius:var(--radius-pill);
  background:var(--whistle);color:var(--ink);font-weight:700;font-size:14px;
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--green-deep);
  color:var(--paper);
  border-bottom:1px solid rgba(245,241,232,.14);
}
.command-bar{
  position:relative;
  display:flex;align-items:center;
  gap:clamp(12px,2vw,26px);
  width:100%;max-width:var(--shell);margin:0 auto;
  padding:0 var(--gutter);
  min-height:76px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;padding:8px 0}
.brand__seal{
  display:grid;place-items:center;
  width:40px;height:40px;flex:0 0 auto;
  border-radius:12px;
  background:var(--whistle);color:var(--ink);
  font-family:var(--mono);font-size:12.5px;font-weight:700;letter-spacing:.04em;line-height:1;
  box-shadow:0 2px 0 rgba(0,0,0,.2);
}
.brand__type{display:flex;flex-direction:column;gap:2px;line-height:1.15}
.brand__mark{font-family:var(--display);font-size:17.5px;font-weight:700;letter-spacing:.06em;color:var(--paper)}
.brand__sub{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;color:rgba(245,241,232,.58)}

.site-nav{margin-left:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{
  display:inline-flex;align-items:baseline;gap:7px;
  padding:9px 13px;border-radius:var(--radius-pill);
  font-size:13.5px;color:rgba(245,241,232,.76);white-space:nowrap;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-index{font-family:var(--mono);font-size:9.5px;letter-spacing:.1em;color:rgba(255,107,44,.82)}
.nav-link:hover{background:rgba(245,241,232,.1);color:var(--paper)}
.nav-link[aria-current="page"]{background:var(--whistle);color:var(--ink);font-weight:700}
.nav-link[aria-current="page"] .nav-index{color:rgba(20,32,24,.62)}
.nav-link[aria-current="page"]:hover{background:#FF824F}

.header-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.season-chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 12px;border-radius:var(--radius-pill);
  border:1px solid rgba(245,241,232,.28);
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;
  color:rgba(245,241,232,.82);white-space:nowrap;
}
.season-chip__dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--whistle);box-shadow:0 0 0 3px rgba(255,107,44,.22);
}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(245,241,232,.3);
  color:var(--paper);font-size:13px;font-weight:700;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle:hover{background:rgba(245,241,232,.1);border-color:rgba(245,241,232,.6)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle__bars span{
  display:block;height:2px;border-radius:2px;background:currentColor;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(245,241,232,.1);pointer-events:none;overflow:hidden;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--whistle) 0%,var(--score-red) 100%);
  transition:width 120ms linear;
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,96px);
  background:var(--green-deep);
  color:rgba(245,241,232,.82);
  font-size:14px;
}
.footer-inner{
  display:grid;
  grid-template-columns:minmax(0,.95fr) minmax(0,2.05fr);
  gap:clamp(28px,4vw,64px);
  align-items:start;
  width:100%;max-width:var(--shell);margin:0 auto;
  padding:clamp(40px,6vw,72px) var(--gutter) 0;
}
.footer-brand__link{display:inline-flex;align-items:center;gap:12px}
.footer-brand__type{display:flex;flex-direction:column;gap:3px;line-height:1.2}
.footer-brand__mark{font-family:var(--display);font-size:20px;font-weight:700;letter-spacing:.06em;color:var(--paper)}
.footer-brand__sub{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:rgba(245,241,232,.58)}
.footer-brand__note{
  margin-top:18px;max-width:34ch;
  font-size:13.5px;line-height:1.85;color:rgba(245,241,232,.66);
}
.footer-nav{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,36px);
}
.footer-col__title{
  margin-bottom:14px;
  font-family:var(--mono);font-size:10.5px;font-weight:600;
  letter-spacing:.18em;color:var(--whistle);
}
.footer-list{display:grid;gap:2px}
.footer-link{
  position:relative;display:inline-block;
  padding:3px 0;font-size:14px;line-height:1.7;
  color:rgba(245,241,232,.8);
  transition:color var(--dur) var(--ease);
}
.footer-link::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--whistle);
  transition:width var(--dur) var(--ease);
}
.footer-link:hover{color:var(--paper)}
.footer-link:hover::after{width:100%}
.footer-contact{display:grid;gap:1px;padding:4px 0}
.footer-contact__label{
  font-family:var(--mono);font-size:10px;letter-spacing:.16em;
  color:rgba(245,241,232,.45);
}
.footer-contact__value{font-size:13.5px;line-height:1.65;color:rgba(245,241,232,.88);word-break:break-word}
.footer-note{
  margin-top:14px;font-size:12.5px;line-height:1.8;
  color:rgba(245,241,232,.56);
}
.archive-strip{
  display:flex;align-items:flex-end;flex-wrap:wrap;
  gap:clamp(14px,2.5vw,28px);
  width:100%;max-width:var(--shell);margin:clamp(30px,5vw,54px) auto 0;
  padding:22px var(--gutter) 0;
  border-top:1px solid rgba(245,241,232,.14);
}
.archive-strip__label{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;
  color:rgba(245,241,232,.55);padding-bottom:4px;
}
.archive-steps{display:flex;align-items:flex-end;gap:6px}
.archive-step{
  display:grid;place-items:center;
  width:clamp(42px,7vw,64px);
  border:1px solid rgba(245,241,232,.16);border-bottom:0;
  border-radius:8px 8px 0 0;
  background:rgba(245,241,232,.1);
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:rgba(245,241,232,.75);
}
.archive-step:nth-child(1){height:22px}
.archive-step:nth-child(2){height:34px}
.archive-step:nth-child(3){height:46px}
.archive-step:nth-child(4){height:58px;background:var(--whistle);border-color:var(--whistle);color:var(--ink);font-weight:700}
.archive-strip__note{
  font-size:12px;color:rgba(245,241,232,.5);padding-bottom:4px;line-height:1.6;
}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:8px 22px;
  width:100%;max-width:var(--shell);margin:clamp(22px,4vw,40px) auto 0;
  padding:18px var(--gutter) 28px;
  border-top:1px solid rgba(245,241,232,.12);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;
  color:rgba(245,241,232,.52);
}
.footer-legal-links{display:flex;align-items:center;gap:10px}
.footer-legal-links a{color:rgba(245,241,232,.72);transition:color var(--dur) var(--ease)}
.footer-legal-links a:hover{color:var(--whistle)}

/* ---------- chips ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:var(--radius-pill);
  border:1px solid rgba(20,32,24,.2);
  background:transparent;color:rgba(20,32,24,.78);
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.chip:hover{background:var(--sand);border-color:rgba(20,32,24,.38)}
.chip.is-active,.chip[aria-pressed="true"]{background:var(--green);border-color:var(--green);color:#fff}
.chip--season{background:var(--sand);border-color:transparent;color:var(--ink)}
.chip--season:hover{background:#DED7C8}
.chip--red{background:var(--score-red);border-color:var(--score-red);color:#fff}
.chip--red:hover{background:#BE1F34;border-color:#BE1F34}

/* ---------- score bar ---------- */
.score-bar{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:10px 20px;
  padding:12px 20px;border-radius:var(--radius-pill);
  background:var(--green-deep);color:var(--paper);
  font-size:13px;
}
.score-bar__label{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--whistle);
}
.score-bar__value{font-family:var(--mono);font-variant-numeric:tabular-nums;font-weight:700}
.score-bar--light{background:var(--sand);color:var(--ink)}
.score-bar--light .score-bar__label{color:var(--score-red)}

/* ---------- focus card ---------- */
.focus-card{
  position:relative;display:block;
  padding:clamp(20px,3vw,32px);
  border-radius:var(--radius-lg);
  background:var(--paper);
  border:2px solid var(--whistle);
  box-shadow:0 10px 0 -4px rgba(255,107,44,.26);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.focus-card:hover{transform:translateY(-3px);box-shadow:0 16px 0 -4px rgba(255,107,44,.4);background:#fff}
.focus-card__label{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--score-red);
}

/* ---------- staircase stack ---------- */
.stair-stack{display:grid;gap:14px}
.stair-card{
  display:block;
  border-radius:var(--radius-md);
  border-left:6px solid var(--slate);
  background:var(--sand);
  padding:18px 22px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.stair-card:nth-child(2){margin-left:clamp(0px,2vw,18px)}
.stair-card:nth-child(3){margin-left:clamp(0px,4vw,36px)}
.stair-card:nth-child(4){margin-left:clamp(0px,6vw,54px)}
.stair-card:hover{border-left-color:var(--whistle);transform:translateX(4px);background:#EFEADF}

/* ---------- figure / image containers ---------- */
.figure{margin:0;width:100%}
.figure__media{
  position:relative;overflow:hidden;
  border-radius:var(--radius-md);
  background:var(--slate);
  aspect-ratio:16/10;
}
.figure__media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(14,59,34,.16) 0 1px,transparent 1px 4px);
  mix-blend-mode:multiply;
}
.figure__img{width:100%;height:100%;object-fit:cover}
.figure__caption{
  margin-top:10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  color:rgba(20,32,24,.6);line-height:1.7;
}
.figure--wide .figure__media{aspect-ratio:21/9}
.figure--tall .figure__media{aspect-ratio:4/5}
.figure--square .figure__media{aspect-ratio:1/1}
.section--deep .figure__caption,.section--night .figure__caption,.section--green .figure__caption{color:rgba(245,241,232,.62)}

/* ---------- breadcrumb ---------- */
.breadcrumb{font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;color:rgba(20,32,24,.6)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__item{display:flex;align-items:center;gap:8px}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:rgba(20,32,24,.3)}
.breadcrumb__link{color:rgba(20,32,24,.7);border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.breadcrumb__link:hover{color:var(--green);border-bottom-color:var(--whistle)}
.breadcrumb__current{color:var(--ink);font-weight:700}

/* ---------- table ---------- */
.data-table{width:100%;font-size:14px}
.data-table th,.data-table td{padding:12px 14px;text-align:left;border-bottom:1px solid rgba(20,32,24,.14)}
.data-table th{
  font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:rgba(20,32,24,.56);
}
.data-table td.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.data-table tbody tr:hover{background:rgba(232,227,215,.6)}

/* ---------- accordion ---------- */
.accordion{display:grid;border-top:1px solid rgba(20,32,24,.16)}
.accordion__item{border-bottom:1px solid rgba(20,32,24,.16)}
.accordion__trigger{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:18px 4px;text-align:left;
  font-size:16px;font-weight:700;
  transition:color var(--dur) var(--ease);
}
.accordion__trigger:hover{color:var(--green)}
.accordion__trigger::after{
  content:"+";font-family:var(--mono);font-size:18px;color:var(--whistle);
  transition:transform var(--dur) var(--ease);
}
.accordion__trigger[aria-expanded="true"]::after{transform:rotate(45deg)}
.accordion__panel{padding:0 4px 20px;font-size:15px;line-height:1.9;color:rgba(20,32,24,.78)}
.accordion__panel[hidden]{display:none}

/* ---------- reveal ---------- */
.has-js [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .45s var(--ease),transform .45s var(--ease);
}
.has-js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    display:none;
    background:var(--green-deep);
    border-bottom:1px solid rgba(245,241,232,.16);
    box-shadow:0 22px 34px rgba(4,20,11,.42);
    padding:12px var(--gutter) 20px;
  }
  .header-tools{margin-left:auto}
  .site-header[data-open="true"] .site-nav{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:4px}
  .nav-link{justify-content:flex-start;padding:13px 14px;font-size:15px;border-radius:12px}
  .nav-toggle{display:inline-flex}
  .season-chip{display:none}
}
@media (max-width:900px){
  .grid--7-5,.grid--8-4,.grid--9-3,.grid--3,.grid--2{grid-template-columns:minmax(0,1fr)}
  .footer-inner{grid-template-columns:minmax(0,1fr)}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  .archive-strip{align-items:flex-start}
}
@media (max-width:640px){
  .command-bar{min-height:64px;gap:10px}
  .brand__sub{display:none}
  .brand__mark{font-size:16px}
  .brand__seal{width:36px;height:36px;border-radius:10px;font-size:11.5px}
  .btn--sm{padding:8px 13px;font-size:12.5px}
  .footer-nav{grid-template-columns:minmax(0,1fr)}
  .footer-base{font-size:11px}
  .archive-step{width:clamp(38px,16vw,56px)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .has-js [data-reveal]{opacity:1;transform:none}
}