/* ============================================================
   杏彩赛场 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 基础组件
   ============================================================ */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:170px}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,table{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}

/* ---------- 变量 ---------- */
:root{
  --deep:#0B3B2E;
  --deep-2:#0F4636;
  --bench:#14513F;
  --orange:#FF6A1A;
  --orange-dark:#D14A06;
  --yellow:#FFD24A;
  --gray:#E6E9E7;
  --gray-2:#CFD6D2;
  --silver:#B9C2BE;
  --indigo:#2A2F6B;
  --wine:#6E1F32;
  --ink:#101514;
  --ink-soft:#3C4442;
  --paper:#F7F8F6;
  --rail:88px;
  --maxw:1320px;
  --gap:24px;
  --r-organic:26px 8px 26px 8px;
  --shadow-1:0 10px 26px rgba(6,26,21,.14);
  --shadow-2:0 20px 48px rgba(6,26,21,.28);
  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:var(--font-head);
  --font-mono:ui-monospace,"JetBrains Mono",SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

/* ---------- 中文排版基线 ---------- */
body{
  font-family:var(--font-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{
  font-family:var(--font-head);
  font-weight:900;
  line-height:1.1;
  letter-spacing:-.02em;
  color:var(--ink);
}
h1{font-size:clamp(34px,5.4vw,56px)}
h2{font-size:clamp(26px,3.6vw,40px)}
h3{font-size:clamp(21px,2.4vw,28px)}
h4{font-size:20px}
p{max-width:46em}
.skew{display:inline-block;transform:skewX(-3deg)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.num{font-family:var(--font-mono);font-weight:700;font-variant-numeric:tabular-nums;color:var(--orange-dark);letter-spacing:-.01em}
.num--yellow{color:var(--yellow)}
.num--xl{font-size:2.4em;line-height:1}

/* ---------- 焦点与动效偏好 ---------- */
:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:4px}
.site-header :focus-visible,.site-footer :focus-visible{outline-color:var(--yellow)}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1 !important;transform:none !important}
}

/* ---------- 容器 ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:24px;padding-right:24px}

/* ============================================================
   头部
   ============================================================ */
.skip-link{
  position:absolute;
  left:16px;
  top:-72px;
  z-index:200;
  padding:10px 18px;
  background:var(--yellow);
  color:var(--ink);
  font-weight:700;
  font-size:14px;
  border-radius:0 0 12px 12px;
  transition:top .18s ease;
}
.skip-link:focus{top:0}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--deep);
  color:var(--paper);
  border-bottom:1px solid rgba(185,194,190,.24);
}
.site-header.is-stuck{box-shadow:var(--shadow-2)}

.read-progress{
  position:absolute;
  left:0;top:0;
  width:100%;height:3px;
  background:rgba(247,248,246,.12);
}
.read-progress__bar{
  display:block;
  width:0;height:100%;
  background:linear-gradient(90deg,var(--orange),var(--yellow));
}

/* 上层：品牌说明 */
.topline{
  position:relative;
  background-color:var(--deep);
  background-image:
    linear-gradient(107deg,rgba(255,106,26,.18) 0 18%,rgba(255,106,26,0) 18.2%),
    linear-gradient(107deg,rgba(42,47,107,0) 0 74%,rgba(42,47,107,.72) 74.2%);
}
.topline__inner{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:var(--gap);
  padding-top:14px;
  padding-bottom:12px;
}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand__mark{
  display:grid;place-items:center;
  flex:0 0 auto;
  width:44px;height:44px;
  background:var(--orange);
  color:var(--ink);
  font-size:22px;font-weight:900;line-height:1;
  border-radius:14px 4px 14px 4px;
  transform:skewX(-3deg);
}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{font-size:22px;font-weight:900;letter-spacing:-.02em;line-height:1.15}
.brand__tag{font-size:12px;color:var(--silver);letter-spacing:.04em;line-height:1.4}
.topline__note{
  max-width:16em;
  font-size:12px;
  line-height:1.5;
  color:rgba(185,194,190,.9);
  text-align:right;
}

.search-capsule{justify-self:center;width:min(460px,100%)}
.search-capsule__btn{
  display:flex;align-items:center;justify-content:space-between;
  gap:14px;
  width:100%;
  padding:11px 18px;
  background:rgba(247,248,246,.08);
  border:1px solid rgba(185,194,190,.4);
  border-radius:999px;
  color:var(--paper);
  font-size:14px;
  text-align:left;
  transition:background .18s ease,border-color .18s ease;
}
.search-capsule__btn:hover{border-color:var(--orange);background:rgba(255,106,26,.16)}
.search-capsule__label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.search-capsule__caret{
  flex:0 0 auto;
  width:9px;height:9px;
  border-right:2px solid var(--orange);
  border-bottom:2px solid var(--orange);
  transform:rotate(45deg) translateY(-2px);
  transition:transform .2s ease;
}
.search-capsule__btn[aria-expanded="true"] .search-capsule__caret{transform:rotate(-135deg) translateY(-2px)}

.search-panel{
  display:none;
  border-top:1px solid rgba(185,194,190,.22);
  background:rgba(16,21,20,.94);
}
.search-panel[data-open="true"]{display:block}
.search-panel__inner{padding-top:20px;padding-bottom:24px}
.search-panel__title{font-size:13px;letter-spacing:.1em;color:var(--silver);margin-bottom:14px}
.search-panel__list{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:12px;
}
.search-panel__item{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding:14px 16px;
  background:rgba(20,81,63,.55);
  border:1px solid rgba(185,194,190,.26);
  border-radius:var(--r-organic);
  transition:background .18s ease,border-color .18s ease,transform .18s ease;
}
.search-panel__item:hover{background:rgba(255,106,26,.18);border-color:var(--yellow);transform:translateY(-2px)}
.search-panel__name{font-weight:700;font-size:15px}
.search-panel__desc{font-size:12px;color:var(--yellow)}

/* 下层：栏目导航带 */
.navband{background:var(--bench);border-top:1px solid rgba(185,194,190,.18)}
.navband__inner{
  position:relative;
  display:flex;align-items:center;gap:var(--gap);
  min-height:54px;
}
.nav{flex:1 1 auto;min-width:0}
.nav__list{display:flex;align-items:center;flex-wrap:wrap;gap:2px}
.nav__item{display:flex}
.nav__link{
  display:inline-block;
  padding:15px 14px;
  font-size:15px;font-weight:700;letter-spacing:-.01em;
  color:var(--paper);
  border-bottom:3px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.nav__link:hover{color:var(--yellow);border-bottom-color:rgba(255,210,74,.55)}
.nav__link[aria-current="page"]{color:var(--yellow);border-bottom-color:var(--orange)}

.navband__cta{flex:0 0 auto;padding:9px 16px;font-size:14px;white-space:nowrap}
.navband__note{
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px 10px;
  font-size:12px;
  color:rgba(185,194,190,.85);
}
.nav-toggle{
  display:none;
  align-items:center;gap:10px;
  padding:10px 14px;
  border:1px solid rgba(185,194,190,.42);
  border-radius:999px;
  color:var(--paper);
  font-size:14px;font-weight:700;
}
.nav-toggle__bars{
  position:relative;display:block;
  width:18px;height:2px;
  background:currentColor;
  border-radius:2px;
}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;
  width:18px;height:2px;
  background:currentColor;border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg)}
.nav-toggle__text{line-height:1}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:72px;
  background:var(--deep);
  color:var(--paper);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  right:-70px;bottom:-90px;
  width:340px;height:340px;
  background:rgba(255,106,26,.14);
  border-radius:52% 40% 58% 44%;
  pointer-events:none;
}
.footer__main{
  position:relative;z-index:1;
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:48px;
  padding-top:64px;
  padding-bottom:52px;
}
.footer__brand{min-width:0}
.footer__logo{display:inline-flex;align-items:center;gap:12px}
.footer__mark{
  display:grid;place-items:center;
  width:40px;height:40px;
  background:var(--orange);
  color:var(--ink);
  font-size:20px;font-weight:900;line-height:1;
  border-radius:13px 4px 13px 4px;
  transform:skewX(-3deg);
}
.footer__name{display:inline-block;font-size:26px;font-weight:900;letter-spacing:-.02em;transform:skewX(-3deg)}
.footer__lead{margin-top:18px;max-width:34ch;font-size:15px;color:rgba(247,248,246,.82)}
.footer__cycle{
  display:inline-flex;align-items:baseline;gap:8px;
  margin-top:20px;
  padding:8px 16px;
  background:var(--wine);
  border-radius:var(--r-organic);
  font-size:13px;
}
.footer__cycle-num{font-size:20px;font-weight:700;color:var(--yellow);line-height:1}
.footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.footer__col{min-width:0}
.footer__col-title{
  font-size:14px;font-weight:900;letter-spacing:.08em;
  color:var(--yellow);
  margin-bottom:14px;
}
.footer__links{display:grid;gap:10px}
.footer__link{
  display:inline-block;
  font-size:15px;
  color:rgba(247,248,246,.86);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer__link:hover{color:var(--orange);border-bottom-color:var(--orange)}

.footer__contact{background:var(--indigo)}
.footer__contact-inner{
  display:grid;gap:8px;
  padding-top:26px;
  padding-bottom:26px;
}
.footer__contact-line{font-size:15px;font-weight:500;color:var(--paper)}
.footer__contact-note{max-width:74ch;font-size:13px;color:rgba(247,248,246,.72)}

.footer__bottom{
  position:relative;z-index:1;
  background:rgba(16,21,20,.4);
  border-top:1px solid rgba(185,194,190,.22);
}
.footer__bottom-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 28px;
  padding-top:18px;padding-bottom:18px;
  font-size:13px;color:rgba(185,194,190,.92);
}
.footer__legal{font-family:var(--font-mono);letter-spacing:.02em}
.footer__baseline{max-width:52ch}
.footer__copy{font-family:var(--font-mono)}

/* ============================================================
   基础组件
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:999px;
  font-size:15px;font-weight:700;line-height:1;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn--solid{background:var(--orange);color:var(--ink)}
.btn--solid:hover{background:var(--yellow);transform:translateY(-2px)}
.btn--ghost{border:1px solid var(--silver);color:var(--paper)}
.btn--ghost:hover{border-color:var(--orange);color:var(--orange)}
.btn--deep{background:var(--deep);color:var(--paper)}
.btn--deep:hover{background:var(--indigo)}

.section{padding:56px 0}
.section--deep{background:var(--deep);color:var(--paper)}
.section--deep h1,.section--deep h2,.section--deep h3,.section--deep h4{color:var(--paper)}
.section--gray{background:var(--gray)}
.section--indigo{background:var(--indigo);color:var(--paper)}
.section--indigo h1,.section--indigo h2,.section--indigo h3,.section--indigo h4{color:var(--paper)}
.section__head{display:grid;gap:10px;margin-bottom:28px}
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.16em;
  color:var(--orange-dark);
}
.section--deep .eyebrow,.section--indigo .eyebrow{color:var(--yellow)}

.grid{display:grid;gap:var(--gap)}
.grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.grid--4-8{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

.card{
  background:var(--paper);
  border:1px solid var(--gray-2);
  border-radius:var(--r-organic);
  padding:22px;
  box-shadow:var(--shadow-1);
}
.card--deep{background:var(--bench);border-color:transparent;color:var(--paper)}
.card--accent{border-left:6px solid var(--orange)}
.card__title{font-size:20px;font-weight:900;letter-spacing:-.01em}
.card__body{margin-top:10px;font-size:15px;color:var(--ink-soft)}
.card--deep .card__body{color:rgba(247,248,246,.84)}
.card__meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;
  border:1px solid var(--silver);
  border-radius:999px;
  font-size:12px;font-weight:700;
  color:var(--ink-soft);
}
.tag--orange{background:rgba(255,106,26,.14);border-color:var(--orange);color:var(--orange-dark)}
.tag--yellow{background:var(--yellow);border-color:var(--yellow);color:var(--ink)}
.tag--deep{background:var(--deep);border-color:var(--deep);color:var(--paper)}
.tag--wine{background:var(--wine);border-color:var(--wine);color:var(--paper)}

.band{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  padding:16px 20px;
  border-radius:var(--r-organic);
  background:var(--gray);
}
.band--deep{background:var(--deep);color:var(--paper)}
.band--orange{background:var(--orange);color:var(--ink)}
.band__label{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em}
.band__value{font-size:20px;font-weight:900;letter-spacing:-.01em}

.rail{position:relative}
.rail__title{
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.12em;
  color:var(--orange-dark);
  margin-bottom:14px;
}
.rail__list{display:grid;gap:4px}
.rail__item{display:block}
.rail__link{
  display:block;
  padding:8px 10px;
  font-size:13px;
  color:var(--ink-soft);
  border-left:3px solid transparent;
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.rail__link:hover{color:var(--deep);border-left-color:var(--orange)}
.rail__link.is-active{color:var(--deep);border-left-color:var(--yellow);transform:translateX(4px)}
.section--deep .rail__title{color:var(--yellow)}
.section--deep .rail__link{color:var(--silver)}
.section--deep .rail__link:hover,.section--deep .rail__link.is-active{color:var(--paper)}

.table{width:100%;font-size:14px}
.table th,.table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--silver);vertical-align:top}
.table th{
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--ink-soft);
}
.table tbody tr{transition:background .18s ease}
.table tbody tr:hover{background:rgba(255,106,26,.09)}
.table__num{font-family:var(--font-mono);font-weight:700;color:var(--orange-dark);font-variant-numeric:tabular-nums}

.timeline{position:relative;display:grid;gap:24px;padding-left:26px}
.timeline::before{
  content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--orange),var(--indigo));
}
.timeline__item{position:relative}
.timeline__item::before{
  content:"";position:absolute;left:-26px;top:8px;
  width:12px;height:12px;border-radius:50%;
  background:var(--paper);border:3px solid var(--orange);
}
.timeline__title{font-size:18px;font-weight:900}
.timeline__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--orange-dark)}
.timeline__body{margin-top:6px;font-size:15px;color:var(--ink-soft)}

.figure{margin:0;position:relative}
.figure__media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  border-radius:var(--r-organic);
  background:var(--bench);
}
.figure__media--tall{aspect-ratio:4/5}
.figure__media--wide{aspect-ratio:21/9}
.figure__img{width:100%;height:100%;object-fit:cover;filter:saturate(.82) contrast(1.05)}
.figure__media::after{
  content:"";position:absolute;inset:auto -10% -35% 40%;
  height:70%;
  background:linear-gradient(200deg,rgba(255,106,26,.4),rgba(255,106,26,0) 72%);
  pointer-events:none;
  mix-blend-mode:screen;
}
.figure--cut .figure__media{clip-path:polygon(0 0,100% 0,100% 76%,70% 100%,0 100%)}
.figure__cap{margin-top:10px;font-size:13px;color:var(--ink-soft)}

.breadcrumb{padding:16px 0 0}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft)}
.breadcrumb__item{display:flex;align-items:center;gap:8px}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--silver)}
.breadcrumb__link{font-weight:700;color:var(--deep);border-bottom:1px solid var(--silver)}
.breadcrumb__link:hover{color:var(--orange-dark);border-bottom-color:var(--orange)}
.breadcrumb__current{color:var(--ink-soft)}

.prose{max-width:46em;font-size:16px;line-height:1.85;color:var(--ink-soft)}
.prose > * + *{margin-top:18px}
.prose h2{margin-top:44px;color:var(--ink)}
.prose h3{margin-top:32px;color:var(--ink)}
.prose ul,.prose ol{display:grid;gap:10px}
.prose li{position:relative;padding-left:18px}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--orange)}
.prose a{color:var(--deep);font-weight:700;border-bottom:1px solid var(--orange)}
.prose strong{color:var(--ink)}

[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .24s ease,transform .24s ease}
[data-reveal].is-visible{opacity:1;transform:none}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1100px){
  .topline__inner{grid-template-columns:auto minmax(0,1fr)}
  .topline__note{display:none}
  .search-capsule{justify-self:end;width:min(380px,100%)}
  .footer__main{grid-template-columns:minmax(0,1fr);gap:40px}
  .footer__cols{grid-template-columns:repeat(3,minmax(0,1fr))}
}

@media (max-width:900px){
  html{scroll-padding-top:150px}
  .nav-toggle{display:inline-flex}
  .nav{
    display:none;
    position:absolute;
    left:0;right:0;top:100%;
    padding:8px 16px 18px;
    background:var(--deep);
    border-top:1px solid rgba(185,194,190,.22);
    box-shadow:var(--shadow-2);
    z-index:5;
  }
  .nav[data-open="true"]{display:block}
  .nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nav__item{display:block}
  .nav__link{
    display:block;
    padding:14px 8px;
    border-bottom:1px solid rgba(185,194,190,.16);
    border-left:3px solid transparent;
  }
  .nav__link:hover{border-left-color:var(--yellow)}
  .nav__link[aria-current="page"]{border-left-color:var(--orange)}
  .navband__inner{flex-wrap:wrap;min-height:58px;gap:12px}
  .navband__note{display:none}
  .topline__inner{grid-template-columns:minmax(0,1fr);gap:12px}
  .search-capsule{grid-column:1 / -1;justify-self:stretch;width:100%}
  .topline{background-image:linear-gradient(107deg,rgba(255,106,26,.2) 0 30%,rgba(255,106,26,0) 30.2%)}
  .grid--5-7,.grid--4-8,.grid--3{grid-template-columns:minmax(0,1fr)}
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
}

@media (max-width:600px){
  .wrap{padding-left:16px;padding-right:16px}
  .navband__note{padding-left:16px;padding-right:16px}
  body{font-size:15px}
  .section{padding:40px 0}
  .brand__name{font-size:19px}
  .brand__mark{width:38px;height:38px;font-size:19px}
  .footer__main{padding-top:48px;padding-bottom:40px}
  .footer__cols{grid-template-columns:minmax(0,1fr)}
  .footer__bottom-inner{justify-content:flex-start}
  .card{padding:18px}
  .search-panel__list{grid-template-columns:minmax(0,1fr)}
}