/* ==========================================================================
   大江体育 · site.css
   江面夜航 / 航标索引 共享外壳与基元
   ========================================================================== */

/* ---------- reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 108px;
}

body,
h1, h2, h3, h4, h5, h6,
p, figure, blockquote, dl, dd, ul, ol {
  margin: 0;
}

ul, ol { padding: 0; }
ul[class], ol[class] { list-style: none; }
img, svg, video { 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; }

/* ---------- 变量 ---------- */
:root {
  /* 品牌色板 */
  --c-river: #0E6B63;
  --c-river-deep: #084B46;
  --c-ink: #0B1D2A;
  --c-night: #12354F;
  --c-home: #F26B3A;
  --c-away: #2D8CFF;
  --c-gold: #D9B86C;
  --c-cream: #F4EEDF;
  --c-mist: #F8FAF7;
  --c-black: #101820;
  --c-gray: #8AA6A1;

  /* 派生 */
  --c-line: rgba(217, 184, 108, 0.30);
  --c-line-cool: rgba(138, 166, 161, 0.32);
  --c-line-dark: rgba(11, 29, 42, 0.14);
  --c-text: #101820;
  --c-text-soft: #40525C;
  --c-text-invert: rgba(248, 250, 247, 0.86);
  --c-text-invert-soft: rgba(248, 250, 247, 0.58);

  /* 字体 */
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  /* 尺度 */
  --shell: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 96px;

  --radius: 2px;
  --shadow-soft: 0 1px 2px rgba(11, 29, 42, 0.06), 0 10px 28px -18px rgba(11, 29, 42, 0.36);
  --dur: 0.3s;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 基础排版 ---------- */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-mist);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--title-color, var(--c-black));
}

h1 { font-size: clamp(34px, 5.2vw, 64px); }
h2 { font-size: clamp(26px, 3.4vw, 40px); }
h3 { font-size: clamp(19px, 2vw, 24px); }
h4 { font-size: clamp(16px, 1.5vw, 18px); }

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 800; }
small { font-size: 12.5px; }

code, kbd, samp, .mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  letter-spacing: 0.02em;
}

::selection {
  background: var(--c-river);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: absolute;
  left: 16px;
  top: -72px;
  z-index: 120;
  display: inline-block;
  padding: 10px 20px;
  background: var(--c-gold);
  color: #1A1206;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  transition: top 0.22s var(--ease);
}
.skip-link:focus {
  top: 12px;
}

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  color: var(--c-mist);
  background:
    radial-gradient(140% 200% at 8% -20%, rgba(14, 107, 99, 0.62) 0%, rgba(14, 107, 99, 0) 62%),
    linear-gradient(180deg, #0B1D2A 0%, #091824 100%);
  border-bottom: 1px solid var(--c-line);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.03), 0 14px 34px -28px rgba(0, 0, 0, 0.95);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(248, 250, 247, 0.05) 0 1px, transparent 1px 8px);
  opacity: 0.55;
  animation: dj-water-drift 11s ease-in-out infinite alternate;
}

.site-header__progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  z-index: 2;
  width: var(--scroll-progress, 0%);
  height: 2px;
  background: linear-gradient(90deg, var(--c-river) 0%, var(--c-gold) 64%, var(--c-home) 100%);
  transition: width 0.1s linear;
}

.site-header__shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 40px);
}

.site-header__brand-col {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 22px);
  min-width: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand__mark {
  position: relative;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 50%;
  border: 1px solid var(--c-line);
  background: radial-gradient(circle at 32% 22%, rgba(14, 107, 99, 0.95), rgba(9, 24, 36, 0.98) 72%);
  overflow: hidden;
}
.brand__mark::before,
.brand__mark::after {
  content: "";
  position: absolute;
  left: -14%;
  width: 128%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
}
.brand__mark::before { top: 40%; transform: rotate(-9deg); opacity: 0.85; }
.brand__mark::after { top: 60%; transform: rotate(-9deg); opacity: 0.38; }

.brand__text { display: block; min-width: 0; }

.brand__name {
  display: block;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.1;
  color: #fff;
}

.brand__sub {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.26em;
  color: var(--c-gold);
  white-space: nowrap;
}

.brand__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-left: clamp(12px, 2vw, 22px);
  border-left: 1px solid var(--c-line);
  min-width: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 3px 9px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1.6;
  white-space: nowrap;
}
.badge--version {
  border: 1px solid var(--c-gold);
  color: var(--c-gold);
  background: rgba(217, 184, 108, 0.08);
}
.badge--home {
  border: 1px solid rgba(242, 107, 58, 0.42);
  color: var(--c-home);
  background: rgba(242, 107, 58, 0.13);
}
.badge--away {
  border: 1px solid rgba(45, 140, 255, 0.42);
  color: var(--c-away);
  background: rgba(45, 140, 255, 0.13);
}
.badge--live {
  border: 1px solid rgba(14, 107, 99, 0.55);
  color: #7FD3C7;
  background: rgba(14, 107, 99, 0.18);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: rgba(248, 250, 247, 0.74);
  white-space: nowrap;
}

.status__dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--c-home);
  animation: dj-score-pulse 2.4s ease-out infinite;
}

.status__text { display: inline; }

.brand__tagline {
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--c-gray);
  white-space: nowrap;
}

@keyframes dj-score-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(242, 107, 58, 0.5); }
  70%  { box-shadow: 0 0 0 7px rgba(242, 107, 58, 0); }
  100% { box-shadow: 0 0 0 0 rgba(242, 107, 58, 0); }
}

@keyframes dj-water-drift {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(0, -8px, 0); }
}

/* ---------- 导航 ---------- */
.site-nav {
  margin-left: auto;
  min-width: 0;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.5vw, 24px);
  counter-reset: navidx;
}
.site-nav__list > li { counter-increment: navidx; }

.site-nav__list a {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-size: 14.5px;
  letter-spacing: 0.04em;
  color: rgba(248, 250, 247, 0.78);
  transition: color 0.25s var(--ease);
}

.site-nav__list a::before {
  content: "0" counter(navidx);
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--c-gold);
  opacity: 0.55;
  vertical-align: 2px;
}

.site-nav__list a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--c-gold);
  transition: right 0.3s var(--ease);
}

.site-nav__list a:hover { color: #fff; }
.site-nav__list a:hover::after,
.site-nav__list a:focus-visible::after { right: 0; }

.site-nav__list a[aria-current="page"] { color: #fff; }
.site-nav__list a[aria-current="page"]::before { opacity: 1; }
.site-nav__list a[aria-current="page"]::after { right: 0; }

/* ---------- 移动导航按钮 ---------- */
.nav-toggle {
  display: none;
  margin-left: auto;
  align-items: center;
  gap: 10px;
  padding: 9px 13px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  color: var(--c-gold);
  background: rgba(18, 53, 79, 0.55);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--c-gold);
  background: rgba(18, 53, 79, 0.92);
}

.nav-toggle__label { display: inline-block; }

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 16px;
}
.nav-toggle__bars span {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(40px, 6vw, 80px);
  padding: clamp(44px, 6vw, 80px) 0 0;
  color: var(--c-text-invert);
  background:
    radial-gradient(120% 160% at 82% 0%, rgba(14, 107, 99, 0.55) 0%, rgba(14, 107, 99, 0) 58%),
    linear-gradient(180deg, #0B1D2A 0%, #07131D 100%);
  border-top: 1px solid var(--c-line);
}

.footer__water {
  position: absolute;
  inset: -12px;
  z-index: 0;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(248, 250, 247, 0.045) 0 1px, transparent 1px 10px);
  opacity: 0.6;
  animation: dj-water-drift 13s ease-in-out infinite alternate;
}

.footer__shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1.5fr 0.85fr 0.95fr 1.25fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.footer__lead { min-width: 0; }

.footer__brand {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: #fff;
  margin: 0;
}

.footer__brandsub {
  margin: 6px 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--c-gold);
}

.footer__summary {
  max-width: 32ch;
  margin-bottom: 22px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-text-invert-soft);
}

.footer__col { min-width: 0; }

.footer__coltitle {
  margin: 0 0 16px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--c-gold);
  border-bottom: 1px solid rgba(217, 184, 108, 0.22);
}

.footer__links {
  display: grid;
  gap: 11px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer__links a {
  font-size: 14.5px;
  color: var(--c-text-invert);
  transition: color 0.25s var(--ease);
}
.footer__links a::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 1px;
  margin-right: 9px;
  vertical-align: 3px;
  background: var(--c-river);
  transition: width 0.25s var(--ease), background 0.25s var(--ease);
}
.footer__links a:hover,
.footer__links a:focus-visible { color: var(--c-gold); }
.footer__links a:hover::before,
.footer__links a:focus-visible::before {
  width: 20px;
  background: var(--c-gold);
}

.footer__contact {
  display: grid;
  gap: 13px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer__contact-label {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--c-gray);
}

.footer__contact-value {
  display: block;
  font-size: 14px;
  color: var(--c-text-invert);
  word-break: break-word;
}

.footer__contact-note {
  margin-top: 16px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--c-text-invert-soft);
}

.footer__base {
  position: relative;
  z-index: 1;
  max-width: var(--shell);
  margin: clamp(30px, 5vw, 54px) auto 0;
  padding: 20px var(--gutter) 30px;
  border-top: 1px solid rgba(217, 184, 108, 0.2);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
}

.footer__legal {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(248, 250, 247, 0.62);
}

.footer__note {
  margin: 0;
  font-size: 12.5px;
  color: var(--c-text-invert-soft);
}

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed;
  right: clamp(14px, 2.4vw, 28px);
  bottom: clamp(14px, 2.4vw, 28px);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 15px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: rgba(11, 29, 42, 0.94);
  color: var(--c-gold);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s, border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.to-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.to-top:hover {
  border-color: var(--c-gold);
  background: rgba(18, 53, 79, 0.98);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.03em;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: none; }

.btn--primary {
  background: var(--c-river);
  color: #fff;
}
.btn--primary:hover { background: var(--c-river-deep); }

.btn--gold {
  background: var(--c-gold);
  color: #1A1206;
}
.btn--gold:hover { background: #E7CA8A; }

.btn--ghost {
  background: transparent;
  border-color: var(--c-line-cool);
  color: inherit;
}
.btn--ghost:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
}

.btn--home {
  background: var(--c-home);
  color: #200D05;
}
.btn--away {
  background: var(--c-away);
  color: #02152E;
}

.btn--sm {
  padding: 8px 14px;
  font-size: 13px;
}
.btn--block {
  display: flex;
  width: 100%;
}

/* ---------- 面包屑 ---------- */
.crumbs {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
}
.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.crumbs li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--c-gray);
}
.crumbs li + li::before {
  content: "/";
  color: rgba(138, 166, 161, 0.6);
}
.crumbs a {
  color: var(--c-text-soft);
  transition: color 0.2s var(--ease);
}
.crumbs a:hover { color: var(--c-river); }
.crumbs [aria-current="page"] {
  color: var(--c-ink);
  font-weight: 500;
}
.crumbs--invert li { color: var(--c-text-invert-soft); }
.crumbs--invert a { color: var(--c-text-invert); }
.crumbs--invert a:hover { color: var(--c-gold); }
.crumbs--invert [aria-current="page"] { color: var(--c-gold); }

/* ---------- 容器与分区 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.shell--narrow { max-width: 860px; }

.section {
  padding-block: clamp(40px, 6vw, 80px);
}
.section--cream { background: var(--c-cream); }
.section--ink {
  background: var(--c-ink);
  --title-color: #fff;
  --body-color: rgba(248, 250, 247, 0.82);
  color: var(--body-color);
}
.section--night {
  background: var(--c-night);
  --title-color: #fff;
  --body-color: rgba(248, 250, 247, 0.82);
  color: var(--body-color);
}

.dark-zone {
  --title-color: #fff;
  --body-color: rgba(248, 250, 247, 0.82);
  color: var(--body-color);
}
.dark-zone h1,
.dark-zone h2,
.dark-zone h3,
.dark-zone h4 { color: var(--title-color); }

/* ---------- 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-12 { grid-column: span 12; }

/* ---------- 目录式装饰 ---------- */
.sec-index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--c-gold);
}
.sec-index::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.edge-note {
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1;
  letter-spacing: 0.3em;
  color: var(--c-gray);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

/* ---------- 图像容器 ---------- */
.figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--c-night);
  border: 1px solid var(--c-line-cool);
  box-shadow: var(--shadow-soft);
}

.figure__media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(155deg, var(--c-night) 0%, var(--c-ink) 72%);
}
.figure__media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(180deg, rgba(248, 250, 247, 0.06) 0 1px, transparent 1px 7px),
    radial-gradient(120% 90% at 20% 0%, rgba(14, 107, 99, 0.35), transparent 62%);
  mix-blend-mode: screen;
  opacity: 0.7;
}
.figure__media[data-placeholder] {
  display: grid;
  place-items: center;
}
.figure__media[data-placeholder]::before {
  content: attr(data-placeholder);
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: rgba(248, 250, 247, 0.5);
}

.figure__caption {
  display: block;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-gray);
  border-top: 1px solid var(--c-line-cool);
  background: rgba(9, 24, 36, 0.6);
}

.figure--wide .figure__media { aspect-ratio: 21 / 9; }
.figure--tall .figure__media { aspect-ratio: 3 / 4; }
.figure--square .figure__media { aspect-ratio: 1 / 1; }
.figure--contain .figure__media > img { object-fit: contain; }

/* ---------- 折叠面板 ---------- */
.accordion {
  border-top: 1px solid var(--c-line-dark);
}
.accordion__item {
  border-bottom: 1px solid var(--c-line-dark);
}
.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 2px;
  text-align: left;
  font-size: 16px;
  font-weight: 700;
  color: var(--title-color, var(--c-black));
  transition: color 0.22s var(--ease);
}
.accordion__trigger:hover { color: var(--c-river); }

.accordion__icon {
  position: relative;
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
}
.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 12px;
  height: 1.5px;
  background: currentColor;
  transform-origin: center;
}
.accordion__icon::after {
  transform: rotate(90deg);
  transition: transform 0.25s var(--ease);
}
.accordion__trigger[aria-expanded="true"] .accordion__icon::after {
  transform: rotate(0deg);
}

.accordion__panel {
  padding: 0 2px 18px;
  color: var(--body-color, var(--c-text-soft));
  font-size: 15.5px;
}
.accordion__panel[hidden] { display: none; }

.accordion--invert { border-top-color: var(--c-line); }
.accordion--invert .accordion__item { border-bottom-color: var(--c-line); }
.accordion--invert .accordion__trigger { color: #fff; }
.accordion--invert .accordion__trigger:hover { color: var(--c-gold); }
.accordion--invert .accordion__panel { color: var(--c-text-invert-soft); }

/* ---------- 显现 ---------- */
html.has-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(10px);
}
html.has-reveal [data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1120px) {
  .brand__tagline { display: none; }
}

@media (max-width: 1040px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    left: calc(-1 * var(--gutter));
    right: calc(-1 * var(--gutter));
    top: 100%;
    z-index: 3;
    margin-left: 0;
    display: none;
    max-height: 72vh;
    overflow-y: auto;
    padding: 8px var(--gutter) 20px;
    background: linear-gradient(180deg, #0B1D2A 0%, #091824 100%);
    border-bottom: 1px solid var(--c-line);
    box-shadow: 0 26px 42px -32px rgba(0, 0, 0, 0.95);
  }
  .site-nav[data-open="true"] { display: block; }

  .site-nav__list {
    display: block;
    gap: 0;
  }
  .site-nav__list > li {
    border-bottom: 1px solid rgba(217, 184, 108, 0.16);
  }
  .site-nav__list > li:last-child { border-bottom: 0; }
  .site-nav__list a {
    display: flex;
    align-items: baseline;
    padding: 15px 4px;
    font-size: 16px;
    color: rgba(248, 250, 247, 0.86);
  }
  .site-nav__list a::before {
    font-size: 11px;
    margin-right: 12px;
    vertical-align: 0;
    opacity: 0.7;
  }
  .site-nav__list a::after { display: none; }
  .site-nav__list a[aria-current="page"] {
    color: var(--c-gold);
    padding-left: 10px;
  }
}

@media (max-width: 720px) {
  .status__text { display: none; }
  .brand__sub { letter-spacing: 0.18em; }
  .brand__meta { gap: 10px; }
}

@media (max-width: 520px) {
  .site-header__shell { padding-block: 12px; gap: 12px; }
  .brand__mark { width: 34px; height: 34px; }
  .brand__name { font-size: 18px; }
  .brand__meta { padding-left: 10px; gap: 8px; }
  .nav-toggle { padding: 8px 10px; letter-spacing: 0.1em; }
  .nav-toggle__label { display: none; }
}

@media (max-width: 1080px) {
  .footer__shell {
    grid-template-columns: 1fr 1fr;
    gap: 32px 40px;
  }
  .footer__lead { grid-column: 1 / -1; }
  .footer__summary { max-width: 46ch; }
}

@media (max-width: 960px) {
  .col-3, .col-4 { grid-column: span 6; }
  .col-5, .col-7, .col-9 { grid-column: span 12; }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-12 { grid-column: span 12; }
  .footer__shell { grid-template-columns: 1fr; }
  .footer__base { flex-direction: column; align-items: flex-start; }
  .to-top { font-size: 10px; padding: 10px 12px; }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  html.has-reveal [data-reveal] {
    opacity: 1;
    transform: none;
  }
  .site-header__progress { transition: none; }
  .to-top { transition: none; }
}