/* ============================================================
   链接赛场 · 共享 Site Kit
   暖纸底 / 深墨 / 奇异果翠绿 / 高原天空蓝 / 暖橙
   ============================================================ */

/* 1. Reset 与设计变量 */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit}
::selection{background:#A8D96B;color:#161A16}

:root{
  --paper:#F4EBDD;
  --ink:#161A16;
  --kiwi:#4FAE3C;
  --flesh:#A8D96B;
  --sky:#2F86C8;
  --lake:#15496E;
  --orange:#F07A2A;
  --seed:#0B0D0B;
  --mist:#DDE8D8;
  --cream:#FFF9F0;
  --ink-soft:#2B312B;
  --muted:#5B665B;
  --line:rgba(22,26,22,.22);
  --line-cream:rgba(255,249,240,.28);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,serif;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --border:3px solid var(--ink);
  --shadow:8px 8px 0 var(--seed);
  --shadow-sm:5px 5px 0 var(--seed);
  --page-max:1240px;
  --gutter:clamp(16px,3.4vw,44px);
  --ease-sprint:cubic-bezier(.2,.7,.3,1);
}

/* 2. 基础排版 */
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{
  font-family:var(--font-serif);
  font-weight:900;
  line-height:1.18;
  letter-spacing:-.01em;
  color:var(--ink);
}
p{max-width:70ch}
strong{font-weight:700}
:focus-visible{outline:3px solid var(--sky);outline-offset:3px}
.site-footer :focus-visible{outline-color:var(--flesh)}
.skip-link{
  position:absolute;left:14px;top:-120px;z-index:300;
  display:inline-block;padding:11px 20px;
  background:var(--ink);color:var(--cream);
  border:3px solid var(--kiwi);
  font-weight:700;text-decoration:none;
  transition:top .18s var(--ease-sprint);
}
.skip-link:focus{top:14px}

/* 3. 头部：跑道式边框导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--paper);
  border-top:8px solid var(--kiwi);
  border-bottom:4px solid var(--ink);
  box-shadow:0 4px 0 rgba(11,13,11,.08);
}
.header-frame{
  position:relative;
  width:100%;max-width:1320px;
  margin-inline:auto;
  padding:12px var(--gutter) 0;
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  column-gap:22px;
}
.brand{grid-column:1;min-width:0}
.brand__link{
  display:inline-flex;align-items:center;gap:12px;
  text-decoration:none;color:var(--ink);
}
.brand__mark{
  position:relative;flex:none;
  width:46px;height:46px;border-radius:50%;
  border:3px solid var(--ink);
  box-shadow:3px 3px 0 var(--seed);
  background:
    radial-gradient(circle at 50% 50%,var(--cream) 0 12%,transparent 12.5%),
    repeating-conic-gradient(from 0deg,var(--flesh) 0deg 12deg,var(--kiwi) 12deg 24deg);
  display:grid;place-items:center;
}
.brand__seeds{
  width:6px;height:6px;border-radius:50%;background:var(--seed);
  box-shadow:0 -14px 0 var(--seed),0 14px 0 var(--seed),14px 0 0 var(--seed),-14px 0 0 var(--seed);
}
.brand__text{display:flex;flex-direction:column;line-height:1.12;min-width:0}
.brand__name{
  font-family:var(--font-serif);font-weight:900;
  font-size:clamp(1.15rem,2vw,1.45rem);
  letter-spacing:.02em;white-space:nowrap;
}
.brand__tagline{
  margin-top:4px;
  font-family:var(--font-mono);font-size:.64rem;
  letter-spacing:.18em;color:var(--sky);white-space:nowrap;
}
.header-utility{
  grid-column:2;justify-self:end;
  display:flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:.72rem;
  letter-spacing:.06em;color:var(--muted);white-space:nowrap;
}
.header-utility::before{
  content:"";width:9px;height:9px;flex:none;
  background:var(--orange);border:2px solid var(--ink);
}
.nav-toggle{
  grid-column:3;justify-self:end;
  display:none;align-items:center;gap:9px;
  padding:9px 13px;
  background:var(--cream);color:var(--ink);
  border:3px solid var(--ink);
  box-shadow:4px 4px 0 var(--seed);
  cursor:pointer;
  transition:transform .15s var(--ease-sprint),box-shadow .15s var(--ease-sprint),background .15s;
}
.nav-toggle:hover{background:var(--flesh)}
.nav-toggle:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--seed)}
.nav-toggle__bars{position:relative;display:block;width:18px;height:2px;background:var(--ink);flex:none}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  transition:transform .2s var(--ease-sprint);
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.nav-toggle__label{font-size:.78rem;font-weight:700;letter-spacing:.1em}
.site-header[data-open="true"] .nav-toggle{background:var(--kiwi)}
.site-header[data-open="true"] .nav-toggle__bars{background:transparent}
.site-header[data-open="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg)}
.site-nav{
  grid-column:1 / -1;grid-row:2;
  margin-top:12px;
  border-top:2px solid var(--ink);
  min-width:0;
}
.site-nav__list{display:flex;align-items:stretch;min-width:0}
.site-nav__item{
  flex:1 1 0;min-width:0;
  border-right:1px solid var(--line);
}
.site-nav__item:last-child{border-right:0}
.site-nav__link{
  display:flex;align-items:baseline;gap:9px;
  padding:12px clamp(8px,1.4vw,18px) 13px;
  text-decoration:none;color:var(--ink);
  font-size:.94rem;font-weight:700;letter-spacing:.01em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  transition:background .16s ease,color .16s ease;
}
.site-nav__link:hover{background:var(--mist)}
.site-nav__link[aria-current="page"]{
  background:var(--kiwi);
  box-shadow:inset 0 -4px 0 var(--ink);
}
.site-nav__num{
  font-family:var(--font-mono);font-size:.68rem;
  color:var(--sky);letter-spacing:0;
}
.site-nav__label{display:inline-block;min-width:0;overflow:hidden;text-overflow:ellipsis}
.site-nav__link[aria-current="page"] .site-nav__num{color:var(--ink)}
.header-progress{
  position:absolute;left:0;right:0;bottom:0;height:4px;
  background:transparent;overflow:hidden;pointer-events:none;
}
.header-progress__bar{
  display:block;width:100%;height:100%;
  background:var(--orange);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .16s linear;
}

/* 4. 页脚：深湖蓝补给站标牌 */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,100px);
  padding:clamp(40px,6vw,76px) var(--gutter) 0;
  background:var(--lake);
  color:var(--cream);
  border-top:10px solid var(--kiwi);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:5px;
  background:repeating-linear-gradient(90deg,var(--flesh) 0 26px,transparent 26px 52px);
}
.footer-grid{
  width:100%;max-width:var(--page-max);margin-inline:auto;
  display:grid;
  grid-template-columns:1.35fr .85fr 1.25fr .85fr;
  gap:clamp(24px,3.2vw,52px);
  padding-bottom:clamp(30px,4.5vw,54px);
  border-bottom:1px solid var(--line-cream);
}
.footer-brand{min-width:0}
.footer-brand__name{
  font-family:var(--font-serif);font-weight:900;
  font-size:clamp(1.4rem,2.4vw,1.8rem);
  letter-spacing:.02em;color:var(--cream);
}
.footer-brand__tagline{
  margin-top:6px;
  font-family:var(--font-mono);font-size:.7rem;
  letter-spacing:.2em;color:var(--flesh);
}
.footer-collect{
  margin-top:16px;max-width:28ch;
  font-size:.9rem;line-height:1.8;color:rgba(255,249,240,.78);
}
.footer-heading{
  display:flex;align-items:center;gap:8px;
  margin-bottom:14px;
  font-family:var(--font-mono);font-weight:700;
  font-size:.7rem;letter-spacing:.18em;
  color:var(--flesh);text-transform:uppercase;
}
.footer-heading::before{
  content:"";width:8px;height:8px;flex:none;
  background:var(--orange);border:1px solid var(--cream);
}
.footer-nav__list,.footer-legal__list{display:grid;gap:9px}
.footer-link{
  display:inline-block;
  font-size:.92rem;text-decoration:none;color:var(--cream);
  border-bottom:1px solid rgba(255,249,240,.32);
  transition:color .15s,border-color .15s;
}
.footer-link:hover{color:var(--flesh);border-bottom-color:var(--flesh)}
.footer-contact__list{display:grid;gap:14px}
.footer-contact__item{font-size:.9rem;line-height:1.7;color:rgba(255,249,240,.9);overflow-wrap:anywhere}
.footer-contact__label{
  display:block;margin-bottom:2px;
  font-family:var(--font-mono);font-size:.64rem;
  letter-spacing:.14em;color:var(--flesh);
}
.footer-base{
  width:100%;max-width:var(--page-max);margin-inline:auto;
  padding-block:18px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:8px 24px;
  font-family:var(--font-mono);font-size:.76rem;
  letter-spacing:.06em;color:rgba(255,249,240,.65);
}

/* 5. 通用布局与排版组件 */
.container{
  width:100%;max-width:var(--page-max);margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--narrow{max-width:820px}
.stack{display:flex;flex-direction:column;gap:clamp(14px,2vw,22px)}
.grid{display:grid;gap:clamp(16px,2.4vw,30px);align-items:start}
.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:minmax(0,.9fr) minmax(0,1.1fr)}
.section{position:relative;padding-block:clamp(40px,7vw,90px)}
.section + .section{border-top:1px solid var(--line)}
.section__head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  align-items:end;
  gap:6px clamp(16px,3vw,34px);
  margin-bottom:clamp(22px,3.4vw,42px);
  padding-bottom:14px;
  border-bottom:3px solid var(--ink);
}
.section__index{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(2.6rem,7vw,5.4rem);
  line-height:.8;letter-spacing:-.06em;
  color:var(--kiwi);
  font-variant-numeric:tabular-nums;
}
.section__title{
  font-size:clamp(1.55rem,3.4vw,2.6rem);
  max-width:22ch;
}
.section__note{
  grid-column:2;
  margin-top:6px;
  font-size:.86rem;line-height:1.75;color:var(--muted);
  max-width:56ch;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:.7rem;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:var(--sky);
}
.eyebrow::before{
  content:"";width:14px;height:6px;flex:none;
  background:var(--orange);
}
.lede{
  max-width:40em;
  font-size:clamp(1.02rem,1.5vw,1.18rem);
  line-height:1.9;color:var(--ink-soft);
}
.prose{max-width:40em;color:var(--ink-soft)}
.prose p{max-width:none;line-height:1.9}
.prose p + p{margin-top:1em}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em;color:var(--ink)}
.prose h2{font-size:clamp(1.3rem,2.2vw,1.6rem)}
.prose h3{font-size:1.12rem}
.prose ul,.prose ol{margin:1em 0;padding-left:1.4em;line-height:1.9}
.prose ul{list-style:square}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.35em}
.prose a{text-decoration:underline;text-underline-offset:3px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.muted{color:var(--muted)}
.rule{border:0;height:3px;background:var(--ink);margin-block:clamp(24px,3.6vw,44px)}
.callout{
  padding:18px 22px;
  background:var(--cream);
  border:2px solid var(--ink);
  border-left:9px solid var(--orange);
  box-shadow:var(--shadow-sm);
  max-width:46em;
  font-size:.95rem;line-height:1.85;color:var(--ink-soft);
}
.breadcrumbs{
  display:flex;flex-wrap:wrap;gap:6px 10px;
  padding-block:18px;
  font-family:var(--font-mono);font-size:.74rem;
  letter-spacing:.05em;color:var(--muted);
}
.breadcrumbs__item{display:flex;align-items:center;gap:10px;min-width:0}
.breadcrumbs__item + .breadcrumbs__item::before{content:"/";color:var(--kiwi);font-weight:700}
.breadcrumbs a{text-decoration:none;border-bottom:1px solid transparent}
.breadcrumbs a:hover{border-bottom-color:var(--ink)}

/* 6. 卡片、标签、按钮、数据牌 */
.card{
  display:flex;flex-direction:column;gap:10px;
  padding:clamp(16px,2.4vw,28px);
  background:var(--cream);
  border:var(--border);
  box-shadow:var(--shadow-sm);
  min-width:0;
}
.card__label{
  font-family:var(--font-mono);font-size:.66rem;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--sky);
}
.card__title{font-size:clamp(1.12rem,1.8vw,1.4rem);line-height:1.3}
.card__text{font-size:.93rem;line-height:1.8;color:var(--muted);max-width:none}
.card--kiwi{background:var(--kiwi);color:var(--ink)}
.card--kiwi .card__label{color:var(--ink)}
.card--kiwi .card__text{color:rgba(22,26,22,.82)}
.card--flesh{background:var(--flesh);color:var(--ink)}
.card--flesh .card__label{color:var(--lake)}
.card--flesh .card__text{color:rgba(22,26,22,.78)}
.card--sky{background:var(--sky);color:var(--cream)}
.card--sky .card__title{color:var(--cream)}
.card--sky .card__label{color:var(--flesh)}
.card--sky .card__text{color:rgba(255,249,240,.86)}
.card--lake{background:var(--lake);color:var(--cream)}
.card--lake .card__title{color:var(--cream)}
.card--lake .card__label{color:var(--flesh)}
.card--lake .card__text{color:rgba(255,249,240,.86)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  border:2px solid var(--ink);
  background:var(--mist);color:var(--ink);
  font-family:var(--font-mono);font-size:.68rem;font-weight:700;
  letter-spacing:.08em;line-height:1.4;
  white-space:nowrap;
}
.tag--kiwi{background:var(--kiwi)}
.tag--sky{background:var(--sky);color:var(--cream);border-color:var(--seed)}
.tag--orange{background:var(--orange)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;
  background:var(--cream);color:var(--ink);
  border:3px solid var(--ink);
  box-shadow:5px 5px 0 var(--seed);
  font-family:var(--font-sans);font-size:.95rem;font-weight:700;
  letter-spacing:.02em;text-decoration:none;cursor:pointer;
  transition:transform .15s var(--ease-sprint),box-shadow .15s var(--ease-sprint),background .15s;
}
.btn:hover{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--seed)}
.btn:active{transform:translate(5px,5px);box-shadow:0 0 0 var(--seed)}
.btn--primary{background:var(--kiwi)}
.btn--orange{background:var(--orange)}
.btn--ghost{background:transparent;box-shadow:none}
.btn--ghost:hover{background:var(--cream);transform:none;box-shadow:none}
.stat{
  display:flex;flex-direction:column;gap:4px;
  padding-top:12px;
  border-top:3px solid var(--ink);
  min-width:0;
}
.stat__value{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(1.8rem,4vw,2.7rem);
  line-height:1;letter-spacing:-.04em;
  font-variant-numeric:tabular-nums;
}
.stat__label{font-size:.78rem;letter-spacing:.06em;color:var(--muted)}

/* 7. 图片容器基础规则 */
.media{
  position:relative;margin:0;
  border:var(--border);
  background:var(--mist);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  min-width:0;
}
.media__img{
  display:block;width:100%;height:auto;
  object-fit:cover;
  background:
    radial-gradient(circle at 32% 34%,var(--cream) 0 2px,transparent 2.5px),
    radial-gradient(circle at 68% 62%,var(--seed) 0 2px,transparent 2.5px),
    linear-gradient(135deg,var(--flesh),var(--kiwi));
  background-size:34px 34px,46px 46px,cover;
}
.media--wide .media__img{aspect-ratio:16/9}
.media--tall .media__img{aspect-ratio:3/4}
.media--square .media__img{aspect-ratio:1/1}
.media__caption{
  padding:8px 12px;
  background:var(--cream);
  border-top:2px solid var(--ink);
  font-size:.76rem;line-height:1.6;color:var(--muted);
}

/* 8. 显现动效 */
.reveal{
  opacity:0;
  transform:translate3d(-18px,14px,0);
  transition:opacity .5s ease,transform .55s var(--ease-sprint);
  will-change:opacity,transform;
}
.reveal.is-visible{opacity:1;transform:none}

/* 9. 响应式：平板与手机 */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:1.3fr 1fr 1.2fr;row-gap:32px}
  .footer-legal{grid-column:1 / -1}
  .footer-legal__list{grid-auto-flow:column;justify-content:start;gap:26px}
}
@media (max-width:960px){
  .site-header{border-top-width:6px}
  .header-frame{grid-template-columns:minmax(0,1fr) auto;column-gap:14px}
  .header-utility{display:none}
  .nav-toggle{display:inline-flex;grid-column:2}
  .site-nav{display:none;margin-top:12px;padding-bottom:6px}
  .site-header[data-open="true"] .site-nav{display:block}
  .site-nav__list{flex-direction:column;align-items:stretch}
  .site-nav__item{flex:1 1 auto;border-right:0;border-bottom:1px solid var(--line)}
  .site-nav__item:last-child{border-bottom:0}
  .site-nav__link{padding:14px 8px;font-size:1rem;white-space:normal}
  .site-nav__link[aria-current="page"]{box-shadow:inset 5px 0 0 var(--ink)}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--split{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:720px){
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .section__head{grid-template-columns:auto minmax(0,1fr);align-items:start}
  .section__note{grid-column:1 / -1;padding-left:2px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px}
  .footer-legal{grid-column:auto}
  .footer-legal__list{grid-auto-flow:row;gap:9px}
  .footer-base{justify-content:flex-start;font-size:.72rem}
  .breadcrumbs{font-size:.7rem}
}
@media (max-width:420px){
  .brand__mark{width:40px;height:40px}
  .brand__seeds{transform:scale(.9)}
  .btn{width:100%;padding:12px 18px}
}

/* 10. 焦点与减少动态偏好 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none}
  .header-progress__bar{transition:none}
  .btn:hover,.nav-toggle:active{transform:none}
}
@media print{
  .site-header,.site-footer,.header-progress,.nav-toggle{display:none !important}
  body{background:#fff;color:#000}
}