/* ============================================================
   /assets/site.css — 江南体育 共享外壳与基础组件
   色彩节奏：暖纸底 → 雾青分区 → 江南青结构 → 赛场橙脉冲 → 夜赛深蓝页脚
   ============================================================ */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
:where(ul[class], ol[class]) { list-style: none; padding: 0; margin: 0; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
:where([id]) { scroll-margin-top: 118px; }

/* ---------- 2. Tokens ---------- */
:root {
  --paper: #F7F1E5;
  --paper-2: #EDE4D4;
  --mist: #D7E5DF;
  --white: #FFFFFF;
  --ink: #10221F;
  --ink-2: #3A4C48;
  --ink-3: #6C7C77;
  --jiang: #0B6B5B;
  --jiang-d: #084F43;
  --water: #43B39E;
  --orange: #E85D2A;
  --orange-d: #B93F16;
  --night: #132B49;
  --signal: #F2C14E;
  --line: rgba(16, 34, 31, .16);
  --line-2: rgba(16, 34, 31, .38);
  --wrap: 1240px;
  --pad: clamp(18px, 4.2vw, 52px);
  --rad: 2px;
  --dur: .24s;
  --ff-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --ff-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --ff-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
}

/* ---------- 3. Base typography ---------- */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--paper);
  background-image:
    linear-gradient(180deg, rgba(215, 229, 223, .72), rgba(247, 241, 229, 0) 460px),
    repeating-linear-gradient(90deg, rgba(16, 34, 31, .04) 0 1px, transparent 1px 88px);
  background-repeat: no-repeat, repeat;
  color: var(--ink);
  font-family: var(--ff-sans);
  font-size: clamp(16px, 1.05vw + 11.5px, 17.5px);
  line-height: 1.75;
}
main { flex: 1 0 auto; display: block; }
main:focus { outline: none; }
h1, h2, h3, h4, h5 {
  font-family: var(--ff-sans);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.02em;
}
p { text-wrap: pretty; }
::selection { background: rgba(67, 179, 158, .38); color: var(--ink); }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }
.site-foot :focus-visible { outline-color: var(--signal); }

/* ---------- 4. Skip link ---------- */
.skip-link {
  position: absolute;
  top: -84px;
  left: var(--pad);
  z-index: 220;
  display: inline-block;
  padding: 12px 20px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .14em;
  border-radius: var(--rad);
  transition: top var(--dur) ease;
}
.skip-link:focus,
.skip-link:focus-visible { top: 12px; }

/* ---------- 5. Header ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 80;
  background: var(--paper);
  border-bottom: 1px solid var(--line-2);
  box-shadow: 0 20px 34px -30px rgba(16, 34, 31, .85);
}
.head-ticker {
  height: 36px;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  transition: height var(--dur) ease, opacity .18s ease;
}
.head-ticker__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 36px;
}
.head-ticker__note {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: #CFE6DE;
}
.dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(242, 193, 78, .22);
  animation: ticker-pulse 2.6s ease-in-out infinite;
}
@keyframes ticker-pulse { 50% { opacity: .35; transform: scale(.78); } }
.head-ticker__link {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--signal);
  border-bottom: 1px solid rgba(242, 193, 78, .45);
  padding-bottom: 1px;
  transition: color var(--dur), border-color var(--dur);
}
.head-ticker__link:hover { color: var(--white); border-color: var(--orange); }

.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(12px, 2vw, 30px);
  padding-block: clamp(14px, 2.1vw, 26px) clamp(10px, 1.6vw, 18px);
}
.masthead__brand {
  grid-column: 2;
  display: grid;
  justify-items: center;
  gap: 5px;
  text-align: center;
}
.masthead__wordmark {
  font-family: var(--ff-serif);
  font-weight: 700;
  font-size: clamp(30px, 4.4vw, 50px);
  line-height: 1;
  letter-spacing: .16em;
  text-indent: .16em;
  color: var(--ink);
  transition: font-size var(--dur) ease, color var(--dur) ease;
}
.masthead__roman {
  font-family: var(--ff-mono);
  font-size: 9.5px;
  letter-spacing: .42em;
  text-indent: .42em;
  text-transform: uppercase;
  color: var(--jiang);
}
.masthead__brand:hover .masthead__wordmark { color: var(--jiang); }
.masthead__tagline {
  grid-column: 1;
  justify-self: start;
  align-self: center;
  position: relative;
  padding-left: 28px;
  font-family: var(--ff-serif);
  font-size: clamp(13px, 1.15vw, 15.5px);
  letter-spacing: .16em;
  color: var(--ink-2);
  transition: opacity var(--dur) ease;
}
.masthead__tagline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 19px;
  height: 2px;
  margin-top: -1px;
  background: var(--orange);
}
.masthead__actions {
  grid-column: 3;
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 12px;
}
.chip-link {
  display: inline-block;
  padding: 8px 12px;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--jiang);
  border: 1px dashed rgba(11, 107, 91, .5);
  border-radius: var(--rad);
  transition: background var(--dur), color var(--dur), border-style var(--dur);
}
.chip-link:hover { background: var(--mist); border-style: solid; color: var(--jiang-d); }

.nav-band {
  border-top: 1px solid var(--line-2);
  background: linear-gradient(180deg, #FBF7EE 0%, var(--paper) 100%);
}
.nav-band__inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
}
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--line-2);
  border-radius: var(--rad);
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--ink);
  transition: background var(--dur), color var(--dur), border-color var(--dur);
}
.nav-toggle__label { line-height: 1; }
.nav-toggle__icon { position: relative; display: inline-block; width: 18px; height: 12px; }
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--ink);
  transition: transform var(--dur) ease, top var(--dur) ease, background var(--dur) ease;
}
.nav-toggle__icon::before { top: 0; }
.nav-toggle__icon::after { top: 10px; }
.nav-toggle[aria-expanded="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { top: 5px; transform: rotate(45deg); background: var(--paper); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { top: 5px; transform: rotate(-45deg); background: var(--paper); }

.site-nav { width: 100%; }
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  justify-content: center;
  counter-reset: navi;
}
.site-nav__list > li {
  counter-increment: navi;
  border-left: 1px solid var(--line);
}
.site-nav__list > li:last-child { border-right: 1px solid var(--line); }
.site-nav__list a {
  position: relative;
  display: block;
  padding: 15px clamp(10px, 1.5vw, 22px);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--ink);
  transition: color var(--dur), background var(--dur);
}
.site-nav__list a::before {
  content: counter(navi, decimal-leading-zero);
  margin-right: .55em;
  vertical-align: .3em;
  font-family: var(--ff-mono);
  font-size: 9px;
  letter-spacing: .08em;
  color: var(--water);
}
.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 7px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) ease;
}
.site-nav__list a:hover { color: var(--jiang); background: rgba(215, 229, 223, .5); }
.site-nav__list a:hover::after { transform: scaleX(1); }
.site-nav__list a[aria-current="page"] {
  color: var(--jiang-d);
  background: linear-gradient(180deg, rgba(67, 179, 158, .24), rgba(67, 179, 158, 0));
}
.site-nav__list a[aria-current="page"]::before { color: var(--orange); }
.site-nav__list a[aria-current="page"]::after { transform: scaleX(1); background: var(--jiang); }

.nav-band__status {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.head-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  overflow: hidden;
  background: rgba(16, 34, 31, .08);
  pointer-events: none;
}
.head-progress::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--water), var(--jiang) 58%, var(--orange));
  transform: scaleX(var(--progress, 0));
  transform-origin: left center;
}

/* 滚动收拢态 */
.site-head[data-condensed] .head-ticker { height: 0; opacity: 0; }
.site-head[data-condensed] .masthead { padding-block: 8px; }
.site-head[data-condensed] .masthead__wordmark { font-size: clamp(20px, 2.4vw, 27px); letter-spacing: .1em; }
.site-head[data-condensed] .masthead__roman { opacity: 0; }
.site-head[data-condensed] .masthead__tagline { opacity: 0; }

/* ---------- 6. Footer ---------- */
.site-foot {
  position: relative;
  overflow: hidden;
  margin-top: clamp(48px, 7vw, 96px);
  background: var(--night);
  color: rgba(247, 241, 229, .82);
  border-top: 1px solid #0A1B30;
}
.site-foot::before {
  content: "";
  display: block;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--signal) 0 2px, rgba(242, 193, 78, 0) 2px 14px);
  opacity: .6;
}
.foot-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.35fr;
  gap: clamp(22px, 3vw, 46px);
  padding-block: clamp(32px, 4.6vw, 58px) clamp(26px, 3.4vw, 42px);
}
.foot-brand__mark {
  font-family: var(--ff-serif);
  font-size: clamp(22px, 2.4vw, 28px);
  letter-spacing: .16em;
  color: var(--paper);
}
.foot-brand__line {
  margin-top: 10px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--water);
}
.foot-brand__note {
  margin-top: 14px;
  max-width: 22em;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(247, 241, 229, .68);
}
.foot-col__title {
  position: relative;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(247, 241, 229, .16);
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--signal);
}
.foot-col__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 34px;
  height: 1px;
  background: var(--orange);
}
.foot-links { display: grid; gap: 2px; }
.foot-links a {
  display: inline-block;
  padding: 6px 0;
  font-size: 14.5px;
  color: rgba(247, 241, 229, .8);
  transition: color var(--dur), transform var(--dur);
}
.foot-links a:hover { color: var(--signal); transform: translateX(3px); }
.foot-contact { display: grid; gap: 14px; }
.foot-contact li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 4px 10px;
}
.foot-contact__key {
  grid-column: 1 / -1;
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(67, 179, 158, .92);
}
.foot-contact__val {
  grid-column: 1;
  font-size: 14px;
  color: rgba(247, 241, 229, .92);
  overflow-wrap: anywhere;
}
.foot-copy {
  grid-column: 2;
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--signal);
  border-bottom: 1px dashed rgba(242, 193, 78, .45);
  padding-bottom: 1px;
  transition: color var(--dur), border-color var(--dur);
}
.foot-copy:hover { color: var(--white); border-color: var(--orange); }
.foot-copy[data-copied="true"] { color: var(--white); border-bottom-style: solid; }
.foot-note {
  margin-top: 16px;
  font-family: var(--ff-mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: .06em;
  color: rgba(247, 241, 229, .5);
}
.foot-mark {
  position: absolute;
  right: -.06em;
  bottom: -.3em;
  z-index: 1;
  font-family: var(--ff-serif);
  font-size: clamp(90px, 17vw, 210px);
  line-height: 1;
  letter-spacing: .06em;
  color: rgba(247, 241, 229, .05);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}
.foot-bottom {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 18px 26px;
  border-top: 1px solid rgba(247, 241, 229, .14);
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: rgba(247, 241, 229, .58);
}
.foot-legal { margin: 0; }
.foot-bottom a {
  color: rgba(247, 241, 229, .78);
  border-bottom: 1px solid rgba(247, 241, 229, .25);
  padding-bottom: 1px;
  transition: color var(--dur), border-color var(--dur);
}
.foot-bottom a:hover { color: var(--signal); border-color: var(--signal); }

/* ---------- 7. Layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}
.section { padding-block: clamp(40px, 6vw, 80px); }
.section--tight { padding-block: clamp(24px, 3.4vw, 44px); }
.section--ink {
  background: linear-gradient(180deg, var(--night), #0E2138);
  color: rgba(247, 241, 229, .86);
}
.section--ink :where(h2, h3, h4) { color: var(--paper); }
.section--mist { background: linear-gradient(180deg, var(--mist), rgba(215, 229, 223, 0)); }
.grid { display: grid; gap: clamp(16px, 2.2vw, 28px); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 8. Text utilities ---------- */
.mono-label {
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--jiang);
}
.kicker::before { content: ""; width: 26px; height: 2px; background: var(--orange); flex: 0 0 auto; }
.page-title { font-size: clamp(30px, 4.6vw, 56px); }
.lede {
  margin-top: 14px;
  max-width: 34em;
  font-size: clamp(16.5px, 1.35vw, 19px);
  line-height: 1.8;
  color: var(--ink-2);
}
.prose { max-width: 40rem; color: var(--ink-2); }
.prose p + p { margin-top: 1em; }
.rule { height: 1px; border: 0; background: var(--line-2); margin-block: clamp(20px, 3vw, 36px); }
.rule--dashed {
  height: 1px;
  border: 0;
  background-color: transparent;
  background-image: repeating-linear-gradient(90deg, var(--line-2) 0 6px, transparent 6px 12px);
  margin-block: clamp(20px, 3vw, 36px);
}

/* ---------- 9. Breadcrumb ---------- */
.breadcrumb {
  padding-block: 18px 0;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--ink-3);
}
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.breadcrumb li { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb li + li::before { content: "/"; color: var(--line-2); }
.breadcrumb a {
  color: var(--ink-2);
  border-bottom: 1px solid transparent;
  transition: color var(--dur), border-color var(--dur);
}
.breadcrumb a:hover { color: var(--jiang); border-bottom-color: var(--jiang); }
.breadcrumb [aria-current="page"] { color: var(--ink); font-weight: 700; }

/* ---------- 10. Buttons & tags ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: 13px 22px;
  border: 1px solid var(--ink);
  border-radius: var(--rad);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ff-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .12em;
  line-height: 1;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--dur), color var(--dur), border-color var(--dur), transform var(--dur), box-shadow var(--dur);
}
.btn:hover { background: var(--ink); color: var(--paper); transform: translateY(-1px); }
.btn--solid { background: var(--jiang); border-color: var(--jiang); color: var(--paper); }
.btn--solid:hover { background: var(--jiang-d); border-color: var(--jiang-d); color: var(--white); }
.btn--ticket {
  position: relative;
  padding: 12px 26px;
  background: var(--orange);
  border: 1px solid var(--orange-d);
  color: #1A0F09;
  letter-spacing: .14em;
}
.btn--ticket:hover {
  background: #F26B36;
  color: #1A0F09;
  box-shadow: 0 12px 24px -16px rgba(232, 93, 42, .95);
}
.btn--ticket::before,
.btn--ticket::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  margin-top: -5px;
  border-radius: 50%;
  background: var(--paper);
}
.btn--ticket::before { left: -6px; }
.btn--ticket::after { right: -6px; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: .45em;
  padding: 4px 9px;
  border: 1px solid rgba(11, 107, 91, .22);
  border-radius: 1px;
  background: var(--mist);
  color: var(--jiang-d);
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.tag--signal { background: rgba(242, 193, 78, .3); border-color: rgba(232, 93, 42, .3); color: #7A3A12; }
.tag--orange { background: var(--orange); border-color: var(--orange-d); color: #1A0F09; }

/* ---------- 11. Cards & panels ---------- */
.card {
  position: relative;
  padding: clamp(18px, 2.2vw, 26px);
  background: var(--white);
  border: 1px solid var(--line-2);
  border-radius: var(--rad);
  box-shadow: 6px 6px 0 -1px var(--paper-2), 6px 6px 0 0 var(--line);
  transition: transform var(--dur), box-shadow var(--dur), border-color var(--dur);
}
.card:hover,
.card:focus-within {
  transform: translateY(-3px);
  border-color: var(--jiang);
  box-shadow: 9px 11px 0 -1px var(--mist), 9px 11px 0 0 rgba(11, 107, 91, .32);
}
.card::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 24px 24px 0;
  border-color: transparent var(--orange) transparent transparent;
  opacity: 0;
  transition: opacity var(--dur);
}
.card:hover::after { opacity: 1; }
.card-title { font-size: clamp(17px, 1.5vw, 20px); font-weight: 800; line-height: 1.32; letter-spacing: -.01em; }
.card-text { margin-top: 8px; font-size: 15px; line-height: 1.75; color: var(--ink-2); }
.panel {
  padding: clamp(18px, 2.6vw, 32px);
  background: var(--paper-2);
  border: 1px solid var(--line-2);
  border-radius: var(--rad);
}
.panel--mist { background: var(--mist); border-color: rgba(11, 107, 91, .28); }
.panel--ink {
  background: linear-gradient(160deg, var(--night), #0E2138);
  border-color: var(--night);
  color: rgba(247, 241, 229, .86);
}
.panel--ink :where(h2, h3, h4) { color: var(--paper); }

/* ---------- 12. Media frame（页面阶段放置图片的容器） ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line-2);
  border-radius: var(--rad);
  background:
    linear-gradient(135deg, var(--mist) 0%, var(--paper-2) 58%, rgba(67, 179, 158, .34) 100%);
}
.media-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .38);
  pointer-events: none;
}
.media-frame figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 10px 14px;
  background: linear-gradient(180deg, transparent, rgba(16, 34, 31, .84));
  color: var(--paper);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .1em;
}
.media-frame--4x3 { aspect-ratio: 4 / 3; }
.media-frame--1x1 { aspect-ratio: 1 / 1; }
.media-frame--wide { aspect-ratio: 21 / 9; }

/* ---------- 13. Disclosure ---------- */
.disclosure {
  background: var(--white);
  border: 1px solid var(--line-2);
  border-radius: var(--rad);
}
.disclosure + .disclosure { margin-top: -1px; }
.disclosure summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-size: 16.5px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  transition: background var(--dur), color var(--dur);
}
.disclosure summary::-webkit-details-marker { display: none; }
.disclosure summary::after {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--jiang);
  border-bottom: 2px solid var(--jiang);
  transform: rotate(45deg);
  transition: transform var(--dur) ease;
}
.disclosure[open] summary { background: var(--mist); color: var(--jiang-d); }
.disclosure[open] summary::after { transform: rotate(-135deg); }
.disclosure__body {
  max-width: 44em;
  padding: 6px 20px 20px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* ---------- 14. To top & reveal ---------- */
.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 70;
  padding: 12px 16px;
  border-radius: var(--rad);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .14em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  box-shadow: 0 16px 26px -20px rgba(16, 34, 31, .95);
  transition: opacity var(--dur), transform var(--dur), visibility var(--dur), background var(--dur), color var(--dur);
}
.to-top[data-visible] { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--orange); color: #1A0F09; }
.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s cubic-bezier(.2, .7, .3, 1);
}
.has-js [data-reveal][data-revealed] { opacity: 1; transform: none; }

/* ---------- 15. Responsive ---------- */
@media (max-width: 1180px) {
  .nav-band__status { display: none; }
}
@media (max-width: 960px) {
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 899px) {
  .masthead {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: 8px;
    padding-block: 12px 14px;
  }
  .masthead__brand { grid-column: 1; }
  .masthead__tagline { grid-column: 1; justify-self: center; padding-left: 0; }
  .masthead__tagline::before { display: none; }
  .masthead__actions { grid-column: 1; justify-self: center; flex-wrap: wrap; justify-content: center; }
  .site-head[data-condensed] .masthead__tagline { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-band__inner { justify-content: space-between; min-height: 0; padding-block: 8px; }
  .site-nav {
    display: none;
    flex-basis: 100%;
    width: 100%;
    border-top: 1px solid var(--line);
    margin-top: 8px;
  }
  .site-nav[data-open] { display: block; animation: nav-in .22s ease both; }
  .site-nav__list { flex-direction: column; }
  .site-nav__list > li { border-left: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .site-nav__list > li:last-child { border-right: 0; border-bottom: 0; }
  .site-nav__list a { padding: 14px 6px; font-size: 16px; }
  .site-nav__list a::after { display: none; }
  .site-nav__list a[aria-current="page"] {
    background: linear-gradient(90deg, rgba(232, 93, 42, .18), transparent);
    box-shadow: inset 3px 0 0 var(--orange);
  }
}
@keyframes nav-in { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
@media (max-width: 620px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
  .foot-grid { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .head-ticker__link { display: none; }
  .masthead__actions { gap: 8px; }
  .chip-link { padding: 7px 10px; font-size: 11px; }
  .foot-bottom { justify-content: flex-start; }
}

/* ---------- 16. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .dot { animation: none; }
  .has-js [data-reveal] { opacity: 1; transform: none; }
  .card:hover { transform: none; }
}