/* =========================================================
   米兰体育官网 · 共享样式 /site.css
   骨架：技术蓝图网格 + 框架式导航 + 珠宝色分区
   ========================================================= */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--strip-h, 34px) + 28px);
}
body, h1, h2, h3, h4, h5, p, ul, ol, li, dl, dd, dt, figure, blockquote { margin: 0; }
ul, ol { list-style: none; padding: 0; }
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --c-ink: #0B0D10;
  --c-plate: #14181D;
  --c-glass: #1E252C;
  --c-red: #C8102E;
  --c-wine: #7E0C1E;
  --c-cyan: #2FF3D9;
  --c-teal: #0E3B36;
  --c-indigo: #291B4A;
  --c-text: #E9ECEF;
  --c-text-2: #9BA6B1;

  --line: rgba(233, 236, 239, 0.12);
  --line-strong: rgba(233, 236, 239, 0.24);
  --line-cyan: rgba(47, 243, 217, 0.30);

  --strip-h: 34px;
  --rail-w: 264px;
  --bar-h: 67px;
  --pad: clamp(18px, 4vw, 44px);

  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- 3. 基底与中文排版 ---------- */
body {
  min-height: 100vh;
  padding-top: calc(var(--strip-h) + var(--bar-h));
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.85;
  color: var(--c-text);
  background-color: var(--c-ink);
  background-image:
    linear-gradient(to right, rgba(233, 236, 239, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(233, 236, 239, 0.035) 1px, transparent 1px),
    radial-gradient(1100px 560px at 82% -12%, rgba(200, 16, 46, 0.20), transparent 62%),
    radial-gradient(900px 520px at 4% 108%, rgba(14, 59, 54, 0.34), transparent 66%);
  background-size: 72px 72px, 72px 72px, auto, auto;
  background-position: 0 0, 0 0, center, center;
  background-repeat: repeat, repeat, no-repeat, no-repeat;
  background-attachment: fixed, fixed, fixed, fixed;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--sans);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(30px, 4.4vw, 46px); font-weight: 900; }
h2 { font-size: clamp(24px, 3vw, 38px); font-weight: 900; }
h3 { font-size: clamp(19px, 2.2vw, 26px); font-weight: 700; }
h4 { font-size: 19px; font-weight: 700; }
p { line-height: 1.85; }
strong { font-weight: 700; color: var(--c-text); }

.mono {
  font-family: var(--mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

::selection { background: rgba(200, 16, 46, 0.55); color: #fff; }

/* ---------- 4. 焦点与跳转 ---------- */
:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
  border-radius: 2px;
}
:focus:not(:focus-visible) { outline: none; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 700;
  color: #04201C;
  background: var(--c-cyan);
  border-radius: 2px;
  text-decoration: none;
  transform: translateY(-180%);
  transition: transform 0.18s ease;
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 5. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--c-text);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  color: #fff;
  background: var(--c-red);
  border-color: var(--c-red);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.10);
}
.btn--primary:hover { background: var(--c-wine); border-color: var(--c-wine); }
.btn--ghost {
  color: var(--c-cyan);
  border-color: var(--line-cyan);
  background: rgba(30, 37, 44, 0.45);
}
.btn--ghost:hover { background: rgba(47, 243, 217, 0.10); border-color: var(--c-cyan); }

/* ---------- 6. 头部：状态条 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
}

.status-strip {
  position: relative;
  display: flex;
  align-items: center;
  gap: 18px;
  height: var(--strip-h);
  padding: 0 20px;
  background: rgba(11, 13, 16, 0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--c-text-2);
  white-space: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}
.status-strip::-webkit-scrollbar { display: none; }
.status-strip__item { display: inline-flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.status-strip__value { color: var(--c-cyan); font-weight: 700; }
.status-strip__spacer { flex: 1 1 auto; min-width: 10px; }
.status-strip__item--dim { color: rgba(155, 166, 177, 0.6); }

.status-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--c-text-2);
  box-shadow: 0 0 0 1px rgba(155, 166, 177, 0.35);
}
.status-dot[data-state="live"] {
  background: var(--c-cyan);
  box-shadow: 0 0 0 1px rgba(47, 243, 217, 0.35), 0 0 10px rgba(47, 243, 217, 0.5);
}
.status-dot[data-state="updating"] { background: var(--c-red); box-shadow: 0 0 0 1px rgba(200, 16, 46, 0.4); }
.status-dot[data-state="pending"] { background: var(--c-wine); box-shadow: 0 0 0 1px rgba(126, 12, 30, 0.5); }

.status-strip__meter {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
}
.status-strip__meter i {
  display: block;
  height: 100%;
  width: 100%;
  transform-origin: 0 50%;
  transform: scaleX(var(--progress, 0));
  background: linear-gradient(90deg, var(--c-cyan), var(--c-red));
  transition: transform 0.12s linear;
}

/* ---------- 7. 头部：导轨与抽屉 ---------- */
.rail {
  position: relative;
  z-index: 80;
  background: linear-gradient(180deg, rgba(20, 24, 29, 0.96), rgba(11, 13, 16, 0.98));
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.rail__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px var(--pad);
}

.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
  background: var(--c-red);
  border-radius: 2px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14);
}
.brand__mark::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--c-cyan);
  border-bottom: 2px solid var(--c-cyan);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.25; }
.brand__name { font-size: 16px; font-weight: 800; letter-spacing: -0.01em; color: var(--c-text); }
.brand__sub {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--c-text-2);
}
.brand__tagline {
  display: none;
  margin-top: 12px;
  max-width: 24ch;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-text-2);
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 12px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--c-text);
  background: rgba(30, 37, 44, 0.6);
  border: 1px solid var(--line-strong);
  border-radius: 2px;
}
.nav-toggle__bars { display: grid; gap: 4px; width: 16px; }
.nav-toggle__bars i {
  display: block;
  height: 2px;
  background: var(--c-cyan);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.site-header[data-open] .nav-toggle__bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.rail__drawer {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 20px var(--pad) 26px;
  max-height: calc(100vh - var(--strip-h) - var(--bar-h));
  overflow-y: auto;
  background: rgba(11, 13, 16, 0.98);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-cyan);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
}
.site-header[data-open] .rail__drawer {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.rail__nav { display: flex; flex-direction: column; }
.rail__label {
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: rgba(155, 166, 177, 0.65);
}
.nav-list { display: flex; flex-direction: column; gap: 2px; }
.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 10px 10px 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text-2);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}
.nav-link:hover { color: var(--c-text); background: rgba(233, 236, 239, 0.05); }
.nav-link__idx {
  min-width: 24px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: rgba(155, 166, 177, 0.7);
}
.nav-link__text { white-space: nowrap; }
.nav-link[aria-current="page"] {
  color: var(--c-text);
  border-left-color: var(--c-red);
  background: linear-gradient(90deg, rgba(200, 16, 46, 0.20), transparent 72%);
}
.nav-link[aria-current="page"] .nav-link__idx { color: var(--c-cyan); }

.rail__cta { display: flex; flex-direction: column; gap: 10px; }

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 112px);
  padding: 0 var(--pad) 26px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(30, 37, 44, 0.55) 0%, rgba(11, 13, 16, 0.96) 58%);
}
.footer-rule {
  display: flex;
  gap: 5px;
  height: 3px;
  margin: 0 calc(-1 * var(--pad)) 34px;
}
.footer-rule span { display: block; height: 100%; }
.footer-rule span:nth-child(1) { flex: 0 0 8%; background: var(--c-red); }
.footer-rule span:nth-child(2) { flex: 0 0 3%; background: var(--c-cyan); }
.footer-rule span:nth-child(3) {
  flex: 1 1 auto;
  background: repeating-linear-gradient(90deg, rgba(233, 236, 239, 0.22) 0 1px, transparent 1px 14px);
}
.footer-rule span:nth-child(4) { flex: 0 0 12%; background: linear-gradient(90deg, var(--c-wine), transparent); }

.footer-inner { width: 100%; max-width: 1320px; margin: 0 auto; }

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px var(--pad);
}
.footer-brand__name { font-size: 19px; font-weight: 900; letter-spacing: -0.01em; }
.footer-brand__sub {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
}
.footer-brand__closing {
  margin-top: 14px;
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--c-text-2);
}
.footer-col__title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--c-text-2);
  border-bottom: 1px solid var(--line);
}
.footer-list { display: flex; flex-direction: column; gap: 9px; }
.footer-list a {
  font-size: 14px;
  color: var(--c-text-2);
  text-decoration: none;
  transition: color 0.18s ease, padding-left 0.18s ease;
}
.footer-list a:hover { color: var(--c-cyan); padding-left: 4px; }
.footer-list a[aria-current="page"] { color: var(--c-text); }

.footer-contact {
  margin-top: 46px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.footer-contact__title {
  margin-bottom: 18px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--c-text-2);
}
.contact-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px var(--pad);
}
.contact-list__row { display: flex; flex-direction: column; gap: 4px; }
.contact-list dt {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: rgba(155, 166, 177, 0.7);
}
.contact-list dd { font-size: 14px; line-height: 1.7; color: var(--c-text); word-break: break-word; }
.footer-contact__note {
  margin-top: 18px;
  max-width: 74ch;
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-text-2);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 24px;
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}
.footer-legal {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-text-2);
}
.footer-copy {
  font-family: var(--mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: rgba(155, 166, 177, 0.65);
}
.to-top {
  margin-left: auto;
  padding: 8px 14px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
  border: 1px solid var(--line-cyan);
  border-radius: 2px;
  transition: background 0.18s ease, border-color 0.18s ease;
}
.to-top:hover { background: rgba(47, 243, 217, 0.10); border-color: var(--c-cyan); }

/* ---------- 9. 布局容器 ---------- */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--pad);
}
main { display: block; }

.grid { display: grid; gap: clamp(16px, 2vw, 26px); }
.grid--halves, .grid--thirds { grid-template-columns: 1fr; }

/* ---------- 10. 章节体系 ---------- */
.chapter { margin-bottom: clamp(28px, 4vw, 52px); }
.chapter__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 14px 22px;
}
.chapter__num {
  font-family: var(--mono);
  font-size: clamp(52px, 8vw, 112px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 0.82;
  letter-spacing: -0.04em;
  color: var(--c-red);
}
.chapter__title {
  font-size: clamp(22px, 3vw, 38px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.chapter__meta {
  padding: 6px 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--c-text-2);
  border: 1px solid var(--line);
  border-radius: 2px;
}
.chapter__rule {
  height: 1px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--c-red) 0 44px, var(--line) 44px 100%);
}
.lede {
  max-width: 62ch;
  font-size: 19px;
  line-height: 1.85;
  color: var(--c-text-2);
}

/* ---------- 11. 数据板 ---------- */
.plate {
  position: relative;
  background: var(--c-plate);
  border: 1px solid var(--line);
  border-radius: 3px;
}
.plate::before,
.plate::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  pointer-events: none;
}
.plate::before { top: -1px; left: -1px; border-top: 2px solid var(--c-cyan); border-left: 2px solid var(--c-cyan); }
.plate::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--c-wine); border-right: 2px solid var(--c-wine); }
.plate--glass {
  background: linear-gradient(180deg, rgba(30, 37, 44, 0.72), rgba(20, 24, 29, 0.72));
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.plate__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--c-text-2);
}
.plate__body { padding: clamp(18px, 2.4vw, 28px); }

/* ---------- 12. 玻璃入口卡 ---------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.2vw, 26px);
  color: inherit;
  text-decoration: none;
  background: linear-gradient(180deg, rgba(30, 37, 44, 0.75), rgba(20, 24, 29, 0.72));
  border: 1px solid var(--line);
  border-radius: 3px;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.card:hover { border-color: var(--line-cyan); transform: translateY(-3px); }
.card__idx {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
}
.card__title { font-size: 19px; font-weight: 800; line-height: 1.35; letter-spacing: -0.01em; }
.card__text { font-size: 14.5px; line-height: 1.8; color: var(--c-text-2); }
.card__hint {
  margin-top: auto;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.card:hover .card__hint,
.card:focus-visible .card__hint { opacity: 1; transform: translateY(0); }

/* ---------- 13. 珠宝色分区 ---------- */
.zone {
  position: relative;
  padding: clamp(24px, 3.6vw, 52px) clamp(18px, 3vw, 44px);
  border: 1px solid var(--line);
  border-radius: 3px;
}
.zone--ink { background: linear-gradient(160deg, rgba(30, 37, 44, 0.80), rgba(11, 13, 16, 0.92)); }
.zone--teal { background: linear-gradient(160deg, rgba(14, 59, 54, 0.86), rgba(11, 13, 16, 0.92)); }
.zone--indigo { background: linear-gradient(160deg, rgba(41, 27, 74, 0.86), rgba(11, 13, 16, 0.92)); }
.zone--wine { background: linear-gradient(160deg, rgba(126, 12, 30, 0.72), rgba(11, 13, 16, 0.94)); }

/* ---------- 14. 图片容器 ---------- */
.figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--c-plate);
  border: 1px solid var(--line);
  border-radius: 3px;
}
.figure__frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #14181D, #0B0D10);
}
.figure__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.figure__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 13, 16, 0.06) 30%, rgba(11, 13, 16, 0.76) 100%);
  pointer-events: none;
}
.figure--4x3 .figure__frame { aspect-ratio: 4 / 3; }
.figure--1x1 .figure__frame { aspect-ratio: 1 / 1; }
.figure--tall .figure__frame { aspect-ratio: 3 / 4; }
.figure__corner {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 2;
  width: 14px;
  height: 14px;
  border-top: 1px solid var(--c-cyan);
  border-left: 1px solid var(--c-cyan);
  opacity: 0.85;
}
.figure__cap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-text-2);
}

/* ---------- 15. 轮次轴 ---------- */
.axis {
  position: relative;
  display: flex;
  align-items: center;
  padding: 18px 0;
}
.axis::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--line);
}
.axis__point {
  position: relative;
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--c-text-2);
}
.axis__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-ink);
  border: 1px solid rgba(155, 166, 177, 0.6);
  transition: transform 0.16s ease, background 0.16s ease, border-color 0.16s ease;
}
.axis__point:hover .axis__dot { border-color: var(--c-cyan); }
.axis__point[data-state="done"] .axis__dot { background: rgba(155, 166, 177, 0.5); border-color: transparent; }
.axis__point[data-state="current"] .axis__dot {
  background: var(--c-red);
  border-color: var(--c-red);
  transform: scale(1.5);
  box-shadow: 0 0 0 4px rgba(200, 16, 46, 0.18);
}
.axis__point[data-state="current"] .axis__label { color: var(--c-text); font-weight: 700; }

/* ---------- 16. 标签页 ---------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  border-bottom: 1px solid var(--line);
}
.tab {
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-text-2);
  background: rgba(30, 37, 44, 0.4);
  border: 1px solid transparent;
  border-bottom: 2px solid transparent;
  border-radius: 2px 2px 0 0;
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}
.tab:hover { color: var(--c-text); }
.tab[aria-selected="true"] {
  color: var(--c-text);
  background: rgba(200, 16, 46, 0.14);
  border-bottom-color: var(--c-red);
}
.panel { padding-top: clamp(18px, 2.4vw, 28px); }

/* ---------- 17. 正文与面包屑 ---------- */
.prose { max-width: 72ch; }
.prose p { margin-bottom: 1.2em; color: var(--c-text-2); }
.prose h2, .prose h3 { margin: 1.8em 0 0.6em; color: var(--c-text); }
.prose ul { margin: 0 0 1.2em; }
.prose ul li { position: relative; padding-left: 20px; margin-bottom: 0.5em; color: var(--c-text-2); }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: 1px;
  background: var(--c-cyan);
}
.prose a { color: var(--c-cyan); text-decoration: none; border-bottom: 1px solid var(--line-cyan); }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  padding: 22px 0;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--c-text-2);
}
.breadcrumb li { display: flex; align-items: center; }
.breadcrumb li + li::before { content: "/"; margin: 0 8px; color: rgba(155, 166, 177, 0.5); }
.breadcrumb a { color: var(--c-text-2); text-decoration: none; }
.breadcrumb a:hover { color: var(--c-cyan); }

/* ---------- 18. 滚动显现 ---------- */
.has-js [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 16px, 0);
  transition: opacity 0.26s ease, transform 0.26s ease;
}
.has-js [data-reveal].is-in {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* ---------- 19. 断点：平板 ---------- */
@media (min-width: 768px) {
  .grid--halves { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--thirds { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .contact-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 20. 断点：桌面（框架式导航成型） ---------- */
@media (min-width: 1024px) {
  :root { --pad: 44px; }

  body {
    padding-top: var(--strip-h);
    padding-left: var(--rail-w);
  }

  .site-header { position: static; }

  .status-strip {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 90;
    padding: 0 24px;
  }

  .rail {
    position: fixed;
    top: var(--strip-h);
    left: 0;
    bottom: 0;
    width: var(--rail-w);
    display: flex;
    flex-direction: column;
    padding: 26px 20px 22px;
    overflow-y: auto;
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .rail__bar {
    display: block;
    padding: 0;
  }
  .brand__tagline { display: block; }
  .nav-toggle { display: none; }

  .rail__drawer {
    position: static;
    display: flex;
    flex: 1 1 auto;
    min-height: 0;
    gap: 0;
    padding: 0;
    max-height: none;
    overflow: visible;
    background: none;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    border-bottom: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .rail__nav { margin-top: 34px; }
  .rail__cta { margin-top: auto; padding-top: 22px; }

  .grid--thirds { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr)); gap: 34px 40px; }
  .footer-brand { grid-column: auto; }
  .contact-list { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ---------- 21. 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;
  }
  .has-js [data-reveal] { opacity: 1; transform: none; }
  .card:hover { transform: none; }
  .btn:hover { transform: none; }
  .axis__point[data-state="current"] .axis__dot { transform: none; }
  .status-strip__meter i { transition: none; }
}