/* ==========================================================
   浩瀚赛场 · CN 看台坐标
   共享样式 /assets/site.css
   ========================================================== */

/* ---------- 1 · 设计变量 ---------- */
:root{
  --ink:        #0C1218;
  --ink-2:      #16212B;
  --red:        #A63A28;
  --red-deep:   #7A2418;
  --sand:       #E3C08A;
  --sand-light: #F3E7D4;
  --paper:      #FBF6EE;
  --mint:       #35F0C0;
  --grey:       #7C8C99;
  --warn:       #D8622F;

  --font-sans: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono: ui-monospace,"SF Mono","JetBrains Mono","Cascadia Mono","Menlo","Consolas",monospace;

  --bd: 2px solid var(--sand);
  --bd-ink: 2px solid var(--ink);
  --hair: 1px solid rgba(124,140,153,.32);
  --hard: 6px 6px 0 var(--red-deep);

  --prose-link: #7A2418;
  --prose-strong: #7A2418;
}

/* ---------- 2 · Reset & 基础 ---------- */
*,
*::before,
*::after{ box-sizing: border-box; }

html{
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 132px;
}

body{
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{ margin: 0; }
ul,ol{ margin: 0; padding: 0; list-style: none; }
img,svg,video{ max-width: 100%; display: block; }
a{ color: inherit; }
button{ font: inherit; color: inherit; }

:focus-visible{
  outline: 3px solid var(--mint);
  outline-offset: 3px;
}

/* ---------- 3 · 布局容器 ---------- */
.shell{
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
}

/* ---------- 4 · 跳转链接 ---------- */
.skip-link{
  position: absolute;
  left: 12px;
  top: -120px;
  z-index: 240;
  display: inline-block;
  padding: 10px 18px;
  background: var(--mint);
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--red);
  transition: top .16s ease;
}
.skip-link:focus{ top: 12px; }

/* ---------- 5 · 页头 ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 120;
  background: var(--ink);
  color: var(--paper);
  border-bottom: 2px solid var(--red);
  box-shadow: 0 6px 0 rgba(122,36,24,.28);
}

/* 上层品牌条 */
.header-rail{
  background: var(--ink);
  border-bottom: 1px solid rgba(227,192,138,.26);
}
.header-rail__inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
  padding-block: 8px;
}

.brand{
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--paper);
  min-width: 0;
}
.brand__mark{
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--red);
  color: var(--paper);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -.04em;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 74% 100%, 0 100%);
}
.brand__text{
  display: flex;
  flex-direction: column;
  line-height: 1.06;
  min-width: 0;
}
.brand__name{
  font-size: 17px;
  font-weight: 900;
  letter-spacing: .02em;
}
.brand__sub{
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .2em;
  color: var(--sand);
  margin-top: 3px;
}

.header-meta{
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}
.ver-badge{
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 4px 10px;
  border: 2px solid var(--mint);
  color: var(--mint);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.ver-badge__k{ color: var(--sand); }
.ver-badge__v{ font-weight: 700; }
.header-meta__hours{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--grey);
  white-space: nowrap;
}

/* 下层栏目条 */
.header-nav{
  background: var(--ink-2);
  border-top: 1px solid rgba(227,192,138,.14);
}
.header-nav__inner{
  display: flex;
  align-items: stretch;
  gap: 18px;
}

.nav-toggle{
  display: none;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--red);
  color: var(--paper);
  border: 2px solid var(--sand);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .06em;
  cursor: pointer;
}
.nav-toggle__bars{
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--paper);
  transition: background .18s ease;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--paper);
  transition: transform .18s 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); }

.site-nav{ flex: 1 1 auto; min-width: 0; }
.site-nav__list{
  display: flex;
  align-items: stretch;
  gap: 2px;
}
.site-nav__item{ display: flex; }

.site-nav__link{
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 14px;
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: background .18s ease, border-color .18s ease, color .18s ease;
}
.site-nav__num{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--grey);
  font-variant-numeric: tabular-nums;
  transition: color .18s ease;
}
.site-nav__label{ white-space: nowrap; }
.site-nav__arrow{
  font-family: var(--font-mono);
  color: var(--mint);
  opacity: 0;
  transform: translateX(-5px);
  transition: opacity .18s ease, transform .18s ease;
}
.site-nav__link:hover{
  background: rgba(166,58,40,.3);
  border-bottom-color: var(--red);
}
.site-nav__link:hover .site-nav__num{ color: var(--sand); }

.site-nav__link[aria-current="page"]{
  background: var(--red);
  color: var(--paper);
  border-bottom-color: var(--mint);
}
.site-nav__link[aria-current="page"] .site-nav__num{ color: var(--sand); }
.site-nav__link[aria-current="page"] .site-nav__arrow{
  opacity: 1;
  transform: none;
}

.header-cta{
  align-self: center;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  background: var(--sand);
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .04em;
  text-decoration: none;
  white-space: nowrap;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: background .18s ease, color .18s ease;
}
.header-cta:hover{
  background: var(--mint);
  color: var(--ink);
}

/* 阅读进度 */
.read-progress{
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 3px;
  background: rgba(227,192,138,.16);
  pointer-events: none;
}
.read-progress__bar{
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--red) 0%, var(--sand) 55%, var(--mint) 100%);
  transition: width .1s linear;
}

/* 移动端回顶“坐标”按钮 */
.coord-jump{
  position: fixed;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  z-index: 130;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  background: var(--red);
  color: var(--paper);
  border: 2px solid var(--sand);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .16em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
  clip-path: polygon(0 0, 100% 0, 100% 68%, 76% 100%, 0 100%);
}
.coord-jump[data-shown="true"]{
  opacity: 1;
  visibility: visible;
  transform: none;
}

/* ---------- 6 · 页脚 ---------- */
.site-footer{
  position: relative;
  background: var(--ink);
  color: var(--paper);
  border-top: 3px solid var(--red);
  margin-top: 0;
}
.site-footer::before{
  content: "";
  display: block;
  height: 10px;
  background: repeating-linear-gradient(90deg, rgba(227,192,138,.55) 0 2px, transparent 2px 14px);
}

.footer-grid{
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 32px 28px;
  padding-block: 56px 44px;
}
.footer-col{
  min-width: 0;
  border-left: var(--hair);
  padding-left: 20px;
}
.footer-col--brand{
  border-left: 0;
  padding-left: 0;
}

.footer-brand{
  position: relative;
  display: inline-block;
  margin: 0 0 16px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.1;
  color: var(--paper);
}
.footer-brand::after{
  content: "";
  display: block;
  width: 68px;
  height: 4px;
  margin-top: 12px;
  background: var(--red);
  transform: skewX(-24deg);
}
.footer-coord{
  max-width: 30ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--sand);
  margin: 0 0 18px;
}
.footer-coord__k{
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--mint);
}
.footer-stamp{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--grey);
}
.footer-stamp__k{
  color: var(--mint);
  margin-right: 10px;
}

.footer-title{
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--grey);
  text-transform: uppercase;
}
.footer-title::after{
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: rgba(124,140,153,.4);
}

.footer-list{
  display: grid;
  gap: 10px;
}
.footer-list a{
  display: inline-block;
  font-size: 14px;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color .16s ease, border-color .16s ease;
}
.footer-list a:hover{
  color: var(--mint);
  border-bottom-color: var(--mint);
}

.footer-contact{
  display: grid;
  gap: 14px;
}
.footer-contact__k{
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--grey);
}
.footer-contact__v{
  display: block;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
}
.footer-contact__v--mono{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
  color: var(--mint);
}

.footer-base{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 18px 28px;
  border-top: var(--hair);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--grey);
}
.footer-base__copy{ margin: 0; }
.footer-base__note{ margin: 0; }

/* ---------- 7 · 通用按钮 ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  background: var(--sand);
  color: var(--ink);
  border: var(--bd-ink);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.3;
  text-decoration: none;
  box-shadow: var(--hard);
  cursor: pointer;
  transition: transform .14s ease, box-shadow .14s ease, background .14s ease;
}
.btn:hover{
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--red-deep);
}
.btn:active{
  transform: translate(3px, 3px);
  box-shadow: 3px 3px 0 var(--red-deep);
}
.btn--solid{
  background: var(--red);
  color: var(--paper);
  border-color: var(--paper);
  box-shadow: 6px 6px 0 var(--mint);
}
.btn--solid:hover{ box-shadow: 8px 8px 0 var(--mint); }
.btn--solid:active{ box-shadow: 3px 3px 0 var(--mint); }
.btn--line{
  background: transparent;
  color: var(--sand);
  border-color: var(--sand);
  box-shadow: 6px 6px 0 rgba(166,58,40,.6);
}
.btn--line:hover{
  color: var(--mint);
  border-color: var(--mint);
  box-shadow: 8px 8px 0 rgba(166,58,40,.6);
}
.btn--line:active{ box-shadow: 3px 3px 0 rgba(166,58,40,.6); }
.btn__arrow{
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
}

/* ---------- 8 · 面包屑 ---------- */
.breadcrumb{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--grey);
}
.breadcrumb__list{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.breadcrumb__list > li{
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb__list > li + li::before{
  content: "/";
  color: rgba(124,140,153,.62);
}
.breadcrumb a{
  color: var(--sand);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .16s ease;
}
.breadcrumb a:hover{ border-bottom-color: var(--sand); }
.breadcrumb [aria-current="page"]{ color: var(--paper); }

/* ---------- 9 · 正文容器 ---------- */
.prose{
  max-width: 68ch;
  font-size: clamp(16px, 1.05vw + 12px, 17.5px);
  line-height: 1.85;
  color: inherit;
}
.prose > * + *{ margin-top: 1.1em; }
.prose h2{
  margin-top: 1.9em;
  font-size: clamp(26px, 2.6vw, 36px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.22;
}
.prose h3{
  margin-top: 1.7em;
  font-size: clamp(19px, 1.6vw, 23px);
  font-weight: 800;
  line-height: 1.32;
}
.prose h2 + *,
.prose h3 + *{ margin-top: .7em; }
.prose ul{ list-style: square; padding-left: 1.3em; }
.prose ol{ list-style: decimal; padding-left: 1.5em; }
.prose li + li{ margin-top: .5em; }
.prose a{
  color: var(--prose-link);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.prose a:hover{ background: rgba(53,240,192,.16); }
.prose strong{ color: var(--prose-strong); font-weight: 800; }
.prose blockquote{
  margin: 1.6em 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--red);
  font-weight: 600;
}
.prose code,
.prose kbd{
  font-family: var(--font-mono);
  font-size: .92em;
  font-variant-numeric: tabular-nums;
  padding: 1px 6px;
  border: 1px solid rgba(124,140,153,.5);
}
.prose hr{
  margin: 2.4em 0;
  height: 0;
  border: 0;
  border-top: 2px solid rgba(124,140,153,.4);
}

/* ---------- 10 · 网格 ---------- */
.grid{
  display: grid;
  gap: clamp(20px, 3vw, 44px);
}
.grid--7-5{ grid-template-columns: 7fr 5fr; }
.grid--5-7{ grid-template-columns: 5fr 7fr; }
.grid--8-4{ grid-template-columns: 8fr 4fr; }
.grid--4-8{ grid-template-columns: 4fr 8fr; }

/* ---------- 11 · 区块与色彩语义 ---------- */
.section{
  position: relative;
  padding-block: clamp(48px, 7vw, 96px);
}
.section--dark{
  background: var(--ink);
  color: var(--paper);
  --prose-link: var(--mint);
  --prose-strong: var(--sand);
}
.section--rock{
  background: var(--ink-2);
  color: var(--paper);
  --prose-link: var(--mint);
  --prose-strong: var(--sand);
}
.section--sand{
  background: var(--sand);
  color: var(--ink);
  --prose-link: var(--red-deep);
  --prose-strong: var(--red-deep);
}
.section--paper{
  background: var(--sand-light);
  color: var(--ink);
  --prose-link: var(--red-deep);
  --prose-strong: var(--red-deep);
}

/* ---------- 12 · 图片容器 ---------- */
.media{
  position: relative;
  display: block;
  overflow: hidden;
  margin: 0;
  background: var(--ink-2);
  border: var(--bd);
  box-shadow: var(--hard);
  aspect-ratio: 16 / 10;
}
.media__img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.media--wide{ aspect-ratio: 21 / 9; }
.media--tall{ aspect-ratio: 3 / 4; }
.media--square{ aspect-ratio: 1 / 1; }
.media--empty{
  background-image: repeating-linear-gradient(135deg, rgba(227,192,138,.1) 0 8px, transparent 8px 18px);
}
.media__caption{
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--grey);
}

/* ---------- 13 · 展览式装饰件 ---------- */
.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--grey);
}
.eyebrow::before{
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  background: var(--red);
  flex: 0 0 auto;
}

.coord-note{
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--grey);
  line-height: 1;
}
.coord-note--left{ transform: rotate(180deg); }

.num-plate{
  display: inline-grid;
  place-items: center;
  min-width: 46px;
  min-height: 46px;
  padding: 0 12px;
  background: var(--red);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 62%, 74% 100%, 0 100%);
}

.sliver{
  display: block;
  padding: 12px 26px 12px 20px;
  background: var(--sand);
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .03em;
  clip-path: polygon(0 0, 100% 0, calc(100% - 22px) 100%, 0 100%);
}
.sliver--red{
  background: var(--red);
  color: var(--paper);
}

/* ---------- 14 · 滚动渐显 ---------- */
[data-reveal]{
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .5s ease, transform .5s ease;
}
[data-reveal].is-visible{
  opacity: 1;
  transform: none;
}

/* ---------- 15 · 响应式 ---------- */
@media (max-width: 1080px){
  .site-nav__link{ padding: 16px 10px; font-size: 13px; }
  .header-cta{ padding: 8px 14px; font-size: 13px; }
}

@media (max-width: 960px){
  html{ scroll-padding-top: 118px; }

  .nav-toggle{ display: inline-flex; }
  .header-nav__inner{
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding-block: 10px;
  }
  .site-nav{
    order: 3;
    flex: 0 0 100%;
    display: none;
    border-top: 2px solid rgba(227,192,138,.2);
    padding-top: 8px;
    margin-top: 2px;
  }
  .site-nav[data-open="true"]{ display: block; }
  .site-nav__list{
    flex-direction: column;
    gap: 2px;
    align-items: stretch;
  }
  .site-nav__item{ display: block; }
  .site-nav__link{
    width: 100%;
    padding: 14px 14px;
    font-size: 15px;
    border-bottom: 2px solid rgba(227,192,138,.1);
    border-left: 3px solid transparent;
    justify-content: flex-start;
  }
  .site-nav__link:hover{ border-left-color: var(--red); }
  .site-nav__link[aria-current="page"]{
    border-bottom-color: rgba(227,192,138,.2);
    border-left-color: var(--mint);
  }
  .site-nav__arrow{
    margin-left: auto;
    opacity: 1;
    transform: none;
  }

  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .footer-col--brand{ grid-column: 1 / -1; }
}

@media (max-width: 860px){
  .grid--7-5,
  .grid--5-7,
  .grid--8-4,
  .grid--4-8{ grid-template-columns: 1fr; }
}

@media (max-width: 720px){
  .header-meta__hours{ display: none; }
  .ver-badge{ font-size: 11px; padding: 3px 8px; }
  .prose{ max-width: none; }
}

@media (max-width: 620px){
  .footer-grid{
    grid-template-columns: 1fr;
    gap: 26px;
    padding-block: 40px 32px;
  }
  .footer-col{
    border-left: 0;
    padding-left: 0;
    border-top: var(--hair);
    padding-top: 22px;
  }
  .footer-col--brand{
    border-top: 0;
    padding-top: 0;
  }
  .footer-base{
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

@media (max-width: 420px){
  .brand__sub{ font-size: 9px; letter-spacing: .14em; }
  .brand__name{ font-size: 15px; }
  .header-cta{ padding: 8px 10px; font-size: 12px; }
  .btn{ width: 100%; justify-content: center; }
}

/* ---------- 16 · 动效降级 ---------- */
@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;
    transform: none;
  }
  .read-progress__bar{ transition: none; }
  .coord-jump{ transition: none; }
}