:root{
  --paper:#F3E9D7;
  --paper-2:#E7D9BF;
  --ink:#0B2422;
  --ink-soft:rgba(11,36,34,.74);
  --karst:#0E5B52;
  --karst-deep:#0A443D;
  --copper:#B86F3B;
  --tangerine:#F28C28;
  --cinnabar:#C63C2B;
  --celadon:#A9CFC2;
  --blueprint:#3F7370;
  --night:#071B1A;
  --white:#FFFDF7;
  --line:rgba(11,36,34,.16);
  --line-strong:rgba(11,36,34,.42);
  --line-light:rgba(243,233,215,.2);
  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,"Cascadia Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --maxw:1240px;
  --gutter:clamp(16px,4vw,48px);
  --header-z:60;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0;}
ul[class],ol[class]{list-style:none;padding:0;}
img,svg{max-width:100%;}
button,input{font:inherit;color:inherit;}
a{color:var(--karst);text-decoration-color:rgba(184,111,59,.8);text-underline-offset:3px;}
a:hover{color:var(--copper);}
:where(a,button,input,summary,[tabindex]):focus-visible{outline:3px solid var(--copper);outline-offset:3px;}
.site-footer :where(a,button):focus-visible{outline-color:var(--tangerine);}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;}

/* ---------- base ---------- */
html{scroll-behavior:smooth;}
body{
  min-height:100vh;
  background-color:var(--paper);
  background-image:
    linear-gradient(to right,rgba(63,115,112,.10) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(63,115,112,.10) 1px,transparent 1px);
  background-size:64px 64px;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:clamp(16px,1.02vw,17.5px);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.is-nav-open{overflow:hidden;}
h1,h2,h3,h4,h5{font-family:var(--font-display);font-weight:900;line-height:1.14;letter-spacing:.015em;}
h1{font-size:clamp(38px,5.6vw,72px);}
h2{font-size:clamp(26px,3.4vw,44px);}
h3{font-size:clamp(20px,2.2vw,28px);}
h4{font-size:clamp(17px,1.6vw,20px);letter-spacing:.03em;}
p{margin-bottom:1.05em;}
strong{font-weight:700;}
code,kbd,samp{font-family:var(--font-mono);font-size:.88em;}

.skip-link{
  position:fixed;top:-120px;left:12px;z-index:300;
  display:inline-block;padding:12px 20px;
  background:var(--ink);color:var(--paper);
  border:2px solid var(--tangerine);
  font-weight:700;font-size:14px;text-decoration:none;
  transition:top .16s ease;
}
.skip-link:focus{top:12px;color:var(--white);}

/* ---------- layout helpers ---------- */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter);}
.page-shell{width:100%;max-width:var(--maxw);margin-inline:auto;padding:clamp(24px,3.4vw,48px) var(--gutter) clamp(40px,6vw,88px);}
.page-shell--narrow{max-width:min(100%,880px);}
.section{padding-block:clamp(30px,4.6vw,64px);}
.section__label{
  display:flex;align-items:center;gap:12px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.22em;
  text-transform:uppercase;color:var(--karst);margin-bottom:14px;
}
.section__label::after{content:"";flex:1 1 auto;height:1px;background:var(--line);}
.section__title{margin-bottom:.5em;}
.prose{max-width:68ch;}
.prose h2{margin-top:1.7em;font-size:clamp(23px,2.6vw,32px);}
.prose h3{margin-top:1.5em;}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.2em;list-style:disc;}
.prose li{margin-bottom:.4em;}
.prose blockquote{
  margin:1.6em 0;padding:14px 20px;
  border-left:4px solid var(--copper);background:rgba(255,253,247,.7);
  color:var(--ink-soft);font-size:15.5px;
}
.grid{display:grid;gap:clamp(16px,2.4vw,30px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--sidebar{grid-template-columns:minmax(0,1fr) minmax(220px,300px);align-items:start;}

/* ---------- page head / breadcrumb ---------- */
.breadcrumb{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:18px;}
.breadcrumb__item{display:inline-flex;align-items:center;gap:6px;color:var(--ink-soft);}
.breadcrumb__link{color:var(--karst);text-decoration:none;border-bottom:1px solid var(--line-strong);}
.breadcrumb__link:hover{color:var(--copper);border-color:var(--copper);}
.breadcrumb__sep{color:var(--blueprint);}
.breadcrumb__current{color:var(--ink);font-weight:600;}
.page-head{
  position:relative;
  padding-block:clamp(18px,2.4vw,30px) clamp(20px,3vw,34px);
  border-bottom:1px solid var(--line-strong);
  margin-bottom:clamp(26px,4vw,52px);
}
.page-head::after{
  content:"";position:absolute;left:0;bottom:-1px;width:min(38%,220px);height:3px;
  background:linear-gradient(90deg,var(--karst),var(--copper) 68%,var(--tangerine));
}
.page-head__coord{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:600;letter-spacing:.24em;
  text-transform:uppercase;color:var(--copper);margin-bottom:16px;
}
.page-head__coord::before{content:"";width:36px;height:2px;background:var(--copper);}
.page-head__title{font-size:clamp(32px,4.8vw,62px);line-height:1.08;margin-bottom:.34em;}
.page-head__lede{max-width:62ch;color:var(--ink-soft);font-size:clamp(15.5px,1.4vw,18px);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 22px;border:1px solid var(--ink);border-radius:1px;
  background:var(--paper);color:var(--ink);
  font-family:var(--font-body);font-size:15px;font-weight:700;line-height:1.2;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;
  transition:background .16s ease,color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn:hover{background:var(--karst);border-color:var(--karst);color:var(--white);transform:translate(-1px,-1px);box-shadow:3px 3px 0 var(--copper);}
.btn--primary{background:var(--tangerine);border-color:var(--ink);color:var(--night);box-shadow:4px 4px 0 var(--karst);}
.btn--primary:hover{background:var(--copper);border-color:var(--night);color:var(--white);box-shadow:5px 5px 0 var(--karst);}
.btn--ghost{background:transparent;border-color:var(--line-strong);}
.btn__arrow{font-family:var(--font-mono);font-size:14px;line-height:1;}

/* ---------- cards / plaques / tags ---------- */
.card{
  position:relative;
  padding:clamp(18px,2.2vw,28px);
  background:var(--white);
  border:1px solid var(--line-strong);
}
.card--paper{
  border-color:var(--ink);
  box-shadow:5px 5px 0 rgba(14,91,82,.16);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card--paper:hover{transform:translate(-2px,-2px);box-shadow:9px 9px 0 rgba(184,111,59,.32);border-color:var(--karst);}
.card__title{font-size:clamp(18px,1.8vw,22px);margin-bottom:.5em;}
.plaque{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:5px 9px;background:var(--paper);border:1px solid var(--line-strong);
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
}
.plaque__no{color:var(--cinnabar);}
.plaque__label{color:var(--karst);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 8px;border:1px solid currentColor;
  font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--karst);background:transparent;
}
.tag--solid{background:var(--karst);border-color:var(--karst);color:var(--white);}
.tag--orange{color:var(--tangerine);}
.tag--cinnabar{color:var(--cinnabar);}
.tag--copper{color:var(--copper);}

/* ---------- media placeholders ---------- */
.media{display:block;position:relative;}
.media__frame{
  position:relative;overflow:hidden;display:block;
  border:1px solid var(--ink);
  background-color:var(--karst);
  background-image:
    repeating-linear-gradient(105deg,rgba(243,233,215,.13) 0 2px,transparent 2px 26px),
    linear-gradient(160deg,var(--karst) 0%,var(--karst-deep) 52%,var(--night) 100%);
  aspect-ratio:4/3;
}
.media__img{display:block;width:100%;height:100%;object-fit:cover;}
.media--wide .media__frame{aspect-ratio:16/9;}
.media--tall .media__frame{aspect-ratio:3/4;}
.media--square .media__frame{aspect-ratio:1/1;}
.media--banner .media__frame{aspect-ratio:21/9;}
.media__coord{
  position:absolute;top:10px;left:10px;z-index:2;
  padding:3px 7px;background:var(--paper);border:1px solid var(--ink);
  font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--ink);
}
.media__caption{
  margin-top:10px;padding-left:10px;border-left:3px solid var(--copper);
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.02em;color:var(--ink-soft);
}

/* ---------- misc shared ---------- */
.index-bar{display:flex;flex-wrap:wrap;gap:8px;padding-block:12px;border-block:1px solid var(--line);}
.index-bar__link{
  padding:6px 10px;border:1px solid var(--line-strong);background:var(--paper);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--ink);text-decoration:none;
  transition:background .15s ease,color .15s ease,border-color .15s ease;
}
.index-bar__link:hover{background:var(--karst);border-color:var(--karst);color:var(--white);}
.callout{
  padding:16px 20px;background:var(--white);
  border:1px solid var(--line-strong);border-left:5px solid var(--cinnabar);
  font-size:15px;color:var(--ink-soft);
}
.anchor-pin{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--cinnabar);
}
.anchor-pin::before{content:"";width:9px;height:9px;background:currentColor;transform:rotate(45deg);}
.rule-scale{height:12px;background-image:repeating-linear-gradient(90deg,var(--line-strong) 0 1px,transparent 1px 16px);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:var(--header-z);
  background:var(--paper);
  border-bottom:1px solid var(--ink);
  isolation:isolate;
}
.site-header__strip{
  height:6px;
  background:linear-gradient(90deg,
    var(--karst) 0 26%,
    var(--copper) 26% 33%,
    var(--tangerine) 33% 37%,
    var(--cinnabar) 37% 40%,
    var(--paper-2) 40% 100%);
}
.site-header__inner{
  position:relative;
  display:flex;align-items:center;gap:clamp(10px,2vw,30px);
  max-width:var(--maxw);margin-inline:auto;
  padding:14px var(--gutter) 18px;
  background-image:repeating-linear-gradient(90deg,rgba(63,115,112,.34) 0 1px,transparent 1px 40px);
  background-repeat:no-repeat;background-size:100% 4px;background-position:0 100%;
}
.brand{
  display:inline-flex;align-items:center;gap:11px;
  color:var(--ink);text-decoration:none;flex:0 0 auto;
}
.brand:hover{color:var(--ink);}
.brand__mark{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 10px 8px;
  background:var(--ink);color:var(--paper);
  font-family:var(--font-mono);font-size:13px;font-weight:600;letter-spacing:.14em;line-height:1;
}
.brand__mark::after{content:"";position:absolute;right:-4px;bottom:-4px;width:10px;height:10px;background:var(--copper);}
.brand__mark-dot{display:inline-block;width:4px;height:4px;margin:0 3px;background:var(--tangerine);}
.brand__name{display:block;font-family:var(--font-display);font-size:20px;font-weight:900;letter-spacing:.06em;line-height:1.05;}
.brand__sub{display:block;margin-top:3px;font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.2em;color:var(--karst);}
.nav{flex:1 1 auto;display:flex;justify-content:center;min-width:0;}
.nav__heading{display:none;}
.nav__list{display:flex;align-items:stretch;gap:2px;}
.nav__item{display:flex;}
.nav__link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:6px;
  padding:11px 11px 10px;
  border-top:2px solid transparent;
  color:var(--ink-soft);text-decoration:none;
  font-size:14.5px;font-weight:500;line-height:1.3;white-space:nowrap;
  transition:background .15s ease,color .15s ease,border-color .15s ease;
}
.nav__index{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.06em;color:var(--blueprint);transition:color .15s ease;}
.nav__link:hover{background:rgba(14,91,82,.09);border-top-color:var(--copper);color:var(--ink);}
.nav__link:hover .nav__index{color:var(--copper);}
.nav__link[aria-current="page"]{background:var(--karst);border-top-color:var(--tangerine);color:var(--white);font-weight:700;}
.nav__link[aria-current="page"] .nav__index{color:var(--celadon);}
.header-tools{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto;}
.search{position:relative;display:flex;align-items:center;}
.search__input{
  width:172px;padding:9px 30px 9px 12px;
  border:1px solid var(--line-strong);border-radius:1px;
  background:var(--white);color:var(--ink);
  font-size:13px;line-height:1.4;
  transition:width .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.search__input::placeholder{color:rgba(11,36,34,.5);}
.search__input:focus{outline:none;border-color:var(--karst);box-shadow:inset 0 0 0 1px var(--karst),0 0 0 3px rgba(184,111,59,.28);width:214px;}
.search__key{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  padding:1px 4px;border:1px solid var(--line-strong);
  font-family:var(--font-mono);font-size:10px;color:var(--blueprint);
  pointer-events:none;
}
.search__input:focus + .search__key{opacity:0;}
.search__panel{
  position:absolute;top:calc(100% + 8px);right:0;z-index:75;
  width:272px;max-height:330px;overflow:auto;
  padding:6px;background:var(--white);
  border:1px solid var(--ink);
  box-shadow:0 20px 44px -26px rgba(7,27,26,.85);
}
.search__panel[hidden]{display:none;}
.search__result a{
  display:flex;align-items:baseline;gap:9px;
  padding:9px 10px;color:var(--ink);text-decoration:none;font-size:13.5px;
}
.search__result a:hover,.search__result a:focus-visible{background:var(--paper);color:var(--ink);}
.search__result-index{font-family:var(--font-mono);font-size:10px;font-weight:600;letter-spacing:.08em;color:var(--copper);}
.search__result-label{font-weight:500;}
.search__empty{padding:10px 10px 12px;font-size:12.5px;line-height:1.6;color:var(--ink-soft);}
.nav-toggle{
  display:none;align-items:center;gap:8px;
  position:relative;z-index:95;
  padding:9px 12px;
  background:var(--paper);border:1px solid var(--ink);border-radius:1px;
  color:var(--ink);font-size:13px;font-weight:700;letter-spacing:.06em;cursor:pointer;
  transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.nav-toggle__box{display:inline-flex;flex-direction:column;gap:4px;width:16px;}
.nav-toggle__bar{display:block;height:2px;width:100%;background:currentColor;transition:transform .2s ease;}
.site-header[data-nav-open="true"] .nav-toggle{background:var(--night);border-color:rgba(243,233,215,.55);color:var(--paper);}
.site-header[data-nav-open="true"] .nav-toggle__bar:first-child{transform:translateY(3px) rotate(45deg);}
.site-header[data-nav-open="true"] .nav-toggle__bar:last-child{transform:translateY(-3px) rotate(-45deg);}
.nav-scrim{position:fixed;inset:0;z-index:70;background:rgba(7,27,26,.56);}
.nav-scrim[hidden]{display:none;}
.site-header__progress{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(11,36,34,.12);}
.site-header__progress-fill{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--karst),var(--copper) 62%,var(--tangerine));transition:width .09s linear;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,110px);
  background:var(--night);
  color:var(--paper);
  border-top:4px solid var(--karst);
}
.footer-rail{
  position:relative;height:20px;
  background-image:repeating-linear-gradient(90deg,rgba(243,233,215,.24) 0 1px,transparent 1px 24px);
  border-bottom:1px solid var(--line-light);
}
.footer-rail::after{content:"";position:absolute;left:0;bottom:0;width:min(38%,260px);height:3px;background:var(--copper);}
.footer-inner{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:clamp(24px,3.6vw,56px);
  max-width:var(--maxw);margin-inline:auto;
  padding:clamp(34px,4.6vw,62px) var(--gutter) 0;
}
.footer-brand__coord{
  display:block;
  font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;
  color:var(--celadon);
}
.footer-brand__tagline{
  margin-top:14px;max-width:22ch;
  font-family:var(--font-display);font-size:clamp(19px,2vw,25px);font-weight:900;line-height:1.5;
  color:var(--white);
}
.footer-brand__meta{margin-top:16px;max-width:34ch;font-size:12.5px;line-height:1.8;color:rgba(243,233,215,.62);}
.footer-col__title{
  margin-bottom:14px;
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;
  color:var(--copper);
}
.footer-col__list{display:grid;gap:9px;}
.footer-link{
  display:inline-flex;align-items:baseline;gap:8px;
  padding-bottom:2px;border-bottom:1px solid transparent;
  color:rgba(243,233,215,.82);font-size:14.5px;text-decoration:none;
  transition:color .15s ease,border-color .15s ease;
}
.footer-link::before{
  content:"";flex:0 0 auto;width:5px;height:5px;margin-top:.6em;
  background:rgba(184,111,59,.72);transform:rotate(45deg);transition:background .15s ease;
}
.footer-link:hover{color:var(--white);border-color:var(--tangerine);}
.footer-link:hover::before{background:var(--tangerine);}
.footer-contact__list{display:grid;gap:12px;}
.footer-contact__item{display:grid;gap:1px;}
.footer-contact__label{font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--celadon);}
.footer-contact__value{font-size:14px;line-height:1.6;color:rgba(243,233,215,.88);word-break:break-word;}
.footer-feedback{
  margin-top:clamp(30px,4vw,54px);
  border-top:1px solid var(--line-light);
  background:linear-gradient(90deg,rgba(14,91,82,.55),rgba(7,27,26,0) 72%);
}
.footer-feedback__inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;
  max-width:var(--maxw);margin-inline:auto;padding:20px var(--gutter);
}
.footer-feedback__link{
  display:inline-flex;align-items:center;gap:10px;
  padding:11px 18px;background:var(--tangerine);color:var(--night);
  border:1px solid var(--night);box-shadow:3px 3px 0 var(--copper);
  font-size:14.5px;font-weight:700;text-decoration:none;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
}
.footer-feedback__link:hover{background:#FFA24A;color:var(--night);transform:translate(-1px,-1px);box-shadow:5px 5px 0 var(--copper);}
.footer-feedback__note{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:rgba(243,233,215,.72);}
.footer-legal{border-top:1px solid var(--line-light);}
.footer-legal__inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;
  max-width:var(--maxw);margin-inline:auto;padding:16px var(--gutter) 28px;
  font-size:12.5px;color:rgba(243,233,215,.6);
}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:6px 16px;}
.footer-legal__links a{color:rgba(243,233,215,.8);text-decoration:none;border-bottom:1px solid rgba(243,233,215,.3);}
.footer-legal__links a:hover{color:var(--white);border-color:var(--tangerine);}
.footer-legal__copy{margin-left:auto;}
.footer-legal__icp{font-family:var(--font-mono);letter-spacing:.06em;}

/* ---------- responsive ---------- */
@media (max-width:1079px){
  .nav-toggle{display:inline-flex;}
  .site-header__inner{flex-wrap:wrap;padding-block:10px 16px;gap:10px;}
  .brand{order:1;}
  .header-tools{order:2;margin-left:auto;gap:8px;}
  .header-tools__cta{display:none;}
  .nav{
    position:fixed;top:0;right:0;bottom:0;left:auto;
    width:min(86vw,352px);height:100dvh;
    display:block;overflow-y:auto;
    padding:96px 20px 40px;
    background:linear-gradient(168deg,var(--karst) 0%,var(--karst-deep) 42%,var(--night) 100%);
    border-left:4px solid var(--copper);
    transform:translateX(101%);visibility:hidden;
    z-index:90;
    transition:transform .3s cubic-bezier(.22,.61,.36,1),visibility .3s linear;
  }
  .nav[data-open="true"]{transform:translateX(0);visibility:visible;}
  .nav__heading{
    display:block;margin-bottom:12px;
    font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;
    color:var(--celadon);
  }
  .nav__list{flex-direction:column;align-items:stretch;gap:0;}
  .nav__item{border-top:1px solid rgba(243,233,215,.18);}
  .nav__link{
    justify-content:space-between;align-items:center;
    padding:16px 6px;border-top:0;
    color:var(--paper);font-size:17px;font-weight:600;white-space:normal;
  }
  .nav__link .nav__index{font-size:11px;color:var(--copper);}
  .nav__link:hover{background:rgba(243,233,215,.1);border-top-color:transparent;color:var(--white);}
  .nav__link[aria-current="page"]{background:var(--tangerine);border-top-color:transparent;color:var(--night);}
  .nav__link[aria-current="page"] .nav__index{color:var(--night);opacity:.72;}
  .search__input{width:152px;}
  .search__input:focus{width:min(46vw,220px);}
}
@media (max-width:900px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--sidebar{grid-template-columns:minmax(0,1fr);}
  .footer-inner{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:640px){
  .header-tools{flex-wrap:wrap;width:100%;justify-content:flex-end;}
  .search{flex:1 1 100%;order:2;}
  .search__input,.search__input:focus{width:100%;}
  .search__panel{left:0;right:auto;width:100%;}
  .nav-toggle{order:1;}
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr);}
  .footer-inner{grid-template-columns:minmax(0,1fr);}
  .footer-legal__copy{margin-left:0;}
  .page-head__coord{letter-spacing:.18em;}
}
@media (max-width:400px){
  .brand__name{font-size:18px;}
  .brand__sub{letter-spacing:.16em;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .card--paper:hover,.btn:hover,.footer-feedback__link:hover{transform:none;}
}