/* ==========================================================================
   米兰赛场 · 共享样式 /assets/site.css
   索引型内容地图 · 复古体育报刊 × 现代转播界面
   ========================================================================== */

/* ---------- 1. 重置 ---------- */
*,
*::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, fieldset { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, label { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. 变量 ---------- */
:root {
  --ms-red: #C8102E;
  --ms-red-deep: #8E0B20;
  --ms-black: #12100F;
  --ms-charcoal: #26232A;
  --ms-blue: #1B5FBE;
  --ms-blue-soft: #DCE6F7;
  --ms-gold: #D9A227;
  --ms-paper: #F5F1EA;
  --ms-ink: #1E1C20;
  --ms-gray: #5C5A63;
  --ms-rose: #F4D6DB;
  --ms-green: #1F7A55;
  --ms-white: #FFFFFF;

  --ms-line: rgba(30, 28, 32, .14);
  --ms-line-strong: rgba(30, 28, 32, .28);
  --ms-line-dark: rgba(245, 241, 234, .16);

  --ms-r-lg: 24px;
  --ms-r: 20px;
  --ms-r-sm: 14px;
  --ms-pill: 999px;

  --ms-s1: 24px;
  --ms-s2: 40px;
  --ms-s3: 72px;

  --ms-wrap: 1240px;
  --ms-head-h: 78px;

  --ms-font: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --ms-mono: "IBM Plex Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- 3. 中文排版与纸感底色 ---------- */
body {
  font-family: var(--ms-font);
  font-size: 17px;
  line-height: 1.8;
  letter-spacing: .01em;
  color: var(--ms-ink);
  background-color: var(--ms-paper);
  background-image: radial-gradient(rgba(30, 28, 32, .05) 1px, transparent 1.2px);
  background-size: 6px 6px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ms-ink);
}
h1 { font-size: clamp(34px, 4.6vw, 56px); font-weight: 900; }
h2 { font-size: clamp(26px, 3vw, 34px); }
h3 { font-size: clamp(19px, 2vw, 22px); }
h4 { font-size: 18px; }
p { max-width: 68ch; }
strong { font-weight: 800; }

.ms-num {
  font-family: var(--ms-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -.01em;
  padding: 0 .05em;
}

:focus-visible {
  outline: 3px solid var(--ms-blue);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 4. 布局容器 ---------- */
.ms-wrap {
  width: 100%;
  max-width: var(--ms-wrap);
  margin: 0 auto;
  padding: 0 20px;
}

.ms-section { padding: var(--ms-s2) 0; }
.ms-section:first-of-type { padding-top: var(--ms-s1); }

.ms-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  padding-bottom: 14px;
  margin-bottom: var(--ms-s1);
  border-bottom: 2px solid var(--ms-ink);
}

.ms-eyebrow {
  display: inline-block;
  font-family: var(--ms-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ms-red);
}

.ms-lead {
  font-size: 18px;
  line-height: 1.85;
  color: var(--ms-gray);
  max-width: 62ch;
}

.ms-rule { height: 4px; background: var(--ms-ink); border-radius: 2px; }
.ms-rule--thin { height: 3px; background: transparent; border-top: 1px solid var(--ms-ink); border-bottom: 1px solid var(--ms-ink); }

/* 非对称分栏：240px 索引侧栏 + 正文 */
.ms-shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: var(--ms-s2);
  align-items: start;
  width: 100%;
  max-width: var(--ms-wrap);
  margin: 0 auto;
  padding: 0 20px;
}
.ms-shell__side { position: sticky; top: calc(var(--ms-head-h) + 20px); }
.ms-shell__main { min-width: 0; }

/* 网格 */
.ms-grid { display: grid; gap: var(--ms-s1); }
.ms-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ms-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.ms-grid--asym { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }

/* 横向主题带 */
.ms-band {
  position: relative;
  overflow: hidden;
  background: var(--ms-black);
  color: var(--ms-paper);
  padding: var(--ms-s2) 0;
}
.ms-band--red { background: var(--ms-red); }
.ms-band--blue { background: var(--ms-blue); }
.ms-band__inner {
  position: relative;
  z-index: 1;
  max-width: var(--ms-wrap);
  margin: 0 auto;
  padding: 0 20px;
}
.ms-band h1, .ms-band h2, .ms-band h3, .ms-band h4 { color: var(--ms-paper); }
.ms-band p, .ms-band li { color: rgba(245, 241, 234, .84); }
.ms-band .ms-eyebrow { color: var(--ms-gold); }
.ms-band--red p, .ms-band--red li { color: rgba(255, 255, 255, .9); }
.ms-band--red .ms-eyebrow { color: rgba(255, 255, 255, .82); }

/* ---------- 5. 头部 ---------- */
.ms-skip {
  position: absolute;
  left: 16px;
  top: -72px;
  z-index: 120;
  padding: 11px 20px;
  background: var(--ms-ink);
  color: var(--ms-paper);
  font-weight: 700;
  border-radius: var(--ms-pill);
  transition: top 200ms ease;
}
.ms-skip:focus { top: 12px; }

.ms-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--ms-paper);
  border-bottom: 1px solid var(--ms-line);
  backdrop-filter: saturate(160%) blur(6px);
}

.ms-header__inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: var(--ms-head-h);
  max-width: var(--ms-wrap);
  margin: 0 auto;
  padding: 10px 20px;
}

.ms-header__brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }

.ms-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--ms-ink);
}
.ms-brand__mark {
  position: relative;
  font-size: 22px;
  padding-left: 14px;
  white-space: nowrap;
}
.ms-brand__mark::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 22px;
  border-radius: 3px;
  background: var(--ms-red);
}
.ms-brand__short { display: none; font-size: 22px; font-weight: 900; }

.ms-badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
  color: var(--ms-red-deep);
  background: var(--ms-rose);
  border-radius: var(--ms-pill);
}

.ms-header__ticker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  max-width: none;
  margin: 0 auto;
  padding: 6px 16px;
  background: var(--ms-black);
  color: var(--ms-paper);
  border-radius: var(--ms-pill);
  font-family: var(--ms-mono);
  font-size: 13px;
  letter-spacing: .02em;
  white-space: nowrap;
}
.ms-ticker__label { color: rgba(245, 241, 234, .58); }
.ms-ticker__text { color: var(--ms-paper); font-weight: 700; }

.ms-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ms-green);
  flex: 0 0 auto;
}

.ms-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 0 1 auto;
  min-width: 0;
}

.ms-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 5px;
  background: rgba(30, 28, 32, .06);
  border-radius: var(--ms-pill);
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
}
.ms-nav__list::-webkit-scrollbar { display: none; }

.ms-nav__link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  color: var(--ms-ink);
  border-radius: var(--ms-pill);
  transition: background-color 200ms ease, color 200ms ease;
}
.ms-nav__link:hover { background: var(--ms-white); color: var(--ms-red); }
.ms-nav__link[aria-current="page"] {
  background: var(--ms-red);
  color: var(--ms-white);
  font-weight: 700;
}

.ms-nav__cta {
  display: inline-block;
  padding: 11px 20px;
  font-size: 15px;
  font-weight: 800;
  white-space: nowrap;
  color: var(--ms-white);
  background: var(--ms-black);
  border-radius: var(--ms-pill);
  transition: background-color 200ms ease, transform 200ms ease;
}
.ms-nav__cta:hover { background: var(--ms-red); transform: translateY(-1px); }

.ms-navtoggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  margin-left: auto;
  font-size: 15px;
  font-weight: 700;
  color: var(--ms-paper);
  background: var(--ms-black);
  border-radius: var(--ms-pill);
}
.ms-navtoggle__bars {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 2px;
  background: var(--ms-paper);
  border-radius: 2px;
}
.ms-navtoggle__bars::before,
.ms-navtoggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--ms-paper);
  border-radius: 2px;
}
.ms-navtoggle__bars::before { top: -5px; }
.ms-navtoggle__bars::after { top: 5px; }

.ms-header__rule {
  height: 3px;
  background:
    linear-gradient(90deg,
      var(--ms-red) 0 132px,
      var(--ms-ink) 132px 148px,
      rgba(30, 28, 32, .14) 148px 100%);
}

.ms-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--ms-red), var(--ms-gold) 62%, var(--ms-blue));
}

/* ---------- 6. 页脚 ---------- */
.ms-footer {
  margin-top: var(--ms-s3);
  background: var(--ms-black);
  color: var(--ms-paper);
  background-image:
    repeating-linear-gradient(0deg, rgba(245, 241, 234, .045) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, rgba(245, 241, 234, .045) 0 1px, transparent 1px 32px);
}

.ms-footer__edge {
  height: 6px;
  background: linear-gradient(90deg,
    var(--ms-red) 0 38%,
    var(--ms-gold) 38% 44%,
    var(--ms-charcoal) 44% 100%);
}

.ms-footer__inner {
  display: grid;
  grid-template-columns: minmax(220px, 1.1fr) minmax(0, 2fr);
  gap: var(--ms-s2);
  max-width: var(--ms-wrap);
  margin: 0 auto;
  padding: var(--ms-s2) 20px var(--ms-s1);
}

.ms-footer__brand { max-width: 34ch; }
.ms-footer__logo {
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--ms-paper);
}
.ms-footer__ver {
  display: inline-block;
  margin-top: 10px;
  padding: 4px 12px;
  font-family: var(--ms-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ms-gold);
  border: 1px solid rgba(217, 162, 39, .5);
  border-radius: var(--ms-pill);
}
.ms-footer__tag {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 241, 234, .62);
}

.ms-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--ms-s1);
}

.ms-fcol__title {
  position: relative;
  padding-bottom: 10px;
  margin-bottom: 12px;
  font-family: var(--ms-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: rgba(245, 241, 234, .58);
  border-bottom: 1px solid var(--ms-line-dark);
}
.ms-fcol__title::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 26px;
  height: 2px;
  background: var(--ms-red);
}

.ms-fcol__list { display: grid; gap: 9px; font-size: 15px; }
.ms-fcol__list a {
  color: rgba(245, 241, 234, .82);
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}
.ms-fcol__list a:hover { color: var(--ms-paper); border-bottom-color: var(--ms-red); }
.ms-fcol__text { color: rgba(245, 241, 234, .6); word-break: break-word; }

.ms-footer__base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  max-width: var(--ms-wrap);
  margin: 0 auto;
  padding: 18px 20px 30px;
  border-top: 1px solid var(--ms-line-dark);
}
.ms-footer__legal {
  max-width: none;
  font-size: 13px;
  color: rgba(245, 241, 234, .55);
}

/* ---------- 7. 按钮与胶囊 ---------- */
.ms-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .01em;
  border-radius: var(--ms-pill);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color 200ms ease, color 200ms ease, border-color 200ms ease, transform 200ms ease;
}
.ms-btn:hover { transform: translateY(-1px); }
.ms-btn--primary { background: var(--ms-red); color: var(--ms-white); }
.ms-btn--primary:hover { background: var(--ms-red-deep); }
.ms-btn--dark { background: var(--ms-black); color: var(--ms-paper); }
.ms-btn--dark:hover { background: var(--ms-charcoal); }
.ms-btn--ghost { background: transparent; color: var(--ms-ink); border-color: var(--ms-line-strong); }
.ms-btn--ghost:hover { border-color: var(--ms-red); color: var(--ms-red); }
.ms-btn--sm { padding: 9px 18px; font-size: 14px; }

.ms-pill {
  display: inline-block;
  padding: 5px 14px;
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--ms-pill);
  background: var(--ms-paper);
  border: 1px solid var(--ms-line);
  color: var(--ms-gray);
}

.ms-tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  border-radius: var(--ms-pill);
  background: var(--ms-charcoal);
  color: var(--ms-paper);
}
.ms-tag--blue { background: var(--ms-blue-soft); color: var(--ms-blue); }
.ms-tag--gold { background: rgba(217, 162, 39, .18); color: #8A6410; }
.ms-tag--green { background: rgba(31, 122, 85, .14); color: var(--ms-green); }
.ms-tag--rose { background: var(--ms-rose); color: var(--ms-red-deep); }

.ms-update {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--ms-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--ms-green);
}
.ms-update::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ms-green);
}

/* ---------- 8. 面包屑 ---------- */
.ms-breadcrumb {
  padding: 18px 0 0;
  font-size: 14px;
  color: var(--ms-gray);
}
.ms-breadcrumb__list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.ms-breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }
.ms-breadcrumb__link { color: var(--ms-gray); border-bottom: 1px solid transparent; }
.ms-breadcrumb__link:hover { color: var(--ms-red); border-bottom-color: var(--ms-red); }
.ms-breadcrumb__sep { color: var(--ms-line-strong); font-family: var(--ms-mono); }

/* ---------- 9. 编号索引目录 ---------- */
.ms-index { display: grid; gap: 2px; counter-reset: msidx; }

.ms-index__item {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--ms-line);
}
.ms-index__item:first-child { border-top: 1px solid var(--ms-line); }

.ms-index__num {
  font-family: var(--ms-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--ms-gray);
}

.ms-index__link {
  font-size: 18px;
  font-weight: 700;
  color: var(--ms-ink);
  border-bottom: 2px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}
.ms-index__link:hover { color: var(--ms-red); border-bottom-color: var(--ms-red); }
.ms-index__link.is-active { color: var(--ms-red); border-bottom-color: var(--ms-red); }

.ms-index__note {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ms-gray);
}

/* ---------- 10. 卡片 ---------- */
.ms-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: var(--ms-s1);
  background: var(--ms-white);
  border: 1px solid var(--ms-line);
  border-radius: var(--ms-r-lg);
}
.ms-card--dark { background: var(--ms-charcoal); border-color: rgba(245, 241, 234, .12); color: var(--ms-paper); }
.ms-card--dark .ms-card__title { color: var(--ms-paper); }
.ms-card--dark .ms-card__text,
.ms-card--dark .ms-card__meta { color: rgba(245, 241, 234, .74); }
.ms-card--rose { background: var(--ms-rose); border-color: transparent; }
.ms-card--blue { background: var(--ms-blue-soft); border-color: transparent; }

.ms-card__tag { align-self: flex-start; }
.ms-card__title { font-size: 21px; font-weight: 800; letter-spacing: -.02em; }
.ms-card__text { font-size: 16px; line-height: 1.8; color: var(--ms-gray); }
.ms-card__meta {
  margin-top: auto;
  font-family: var(--ms-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ms-gray);
}

/* ---------- 11. 图片容器（页面阶段放图） ---------- */
.ms-media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border-radius: var(--ms-r-lg);
  background: linear-gradient(140deg, var(--ms-charcoal), var(--ms-black) 58%, var(--ms-red-deep));
  isolation: isolate;
}
.ms-media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(45deg, rgba(245, 241, 234, .07) 0 1px, transparent 1px 16px);
}
.ms-media__img {
  position: relative;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ms-media__tag {
  position: absolute;
  left: 14px;
  top: 14px;
  z-index: 2;
}
.ms-media__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  padding: 26px 16px 12px;
  font-size: 13px;
  color: rgba(245, 241, 234, .86);
  background: linear-gradient(180deg, transparent, rgba(18, 16, 15, .82));
}
.ms-media--21x9 { aspect-ratio: 21 / 9; }
.ms-media--16x9 { aspect-ratio: 16 / 9; }
.ms-media--4x3 { aspect-ratio: 4 / 3; }
.ms-media--1x1 { aspect-ratio: 1 / 1; }

/* ---------- 12. 数据块与水印 ---------- */
.ms-stat { display: grid; gap: 4px; }
.ms-stat__value {
  font-family: var(--ms-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.05;
  letter-spacing: -.03em;
  color: var(--ms-red);
}
.ms-stat__label {
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ms-gray);
}
.ms-band .ms-stat__value { color: var(--ms-gold); }
.ms-band .ms-stat__label { color: rgba(245, 241, 234, .6); }

.ms-watermark {
  position: absolute;
  z-index: 0;
  font-family: var(--ms-mono);
  font-weight: 700;
  font-size: clamp(90px, 20vw, 240px);
  line-height: 1;
  letter-spacing: -.06em;
  color: var(--ms-ink);
  opacity: .08;
  pointer-events: none;
  user-select: none;
}
.ms-watermark--light { color: var(--ms-paper); opacity: .1; }

/* ---------- 13. 分段切换（纯 CSS） ---------- */
.ms-seg { position: relative; display: block; }
.ms-seg__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}
.ms-seg__tabs {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  width: fit-content;
  max-width: 100%;
  padding: 5px;
  background: var(--ms-white);
  border: 1px solid var(--ms-line);
  border-radius: var(--ms-pill);
}
.ms-seg__tabs:focus-within { outline: 3px solid var(--ms-blue); outline-offset: 3px; }
.ms-seg__label {
  position: relative;
  padding: 9px 20px;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  color: var(--ms-gray);
  border-radius: var(--ms-pill);
  cursor: pointer;
  user-select: none;
  transition: background-color 220ms ease, color 220ms ease;
}
.ms-seg__label:hover { background: var(--ms-paper); color: var(--ms-ink); }
.ms-seg__panels { margin-top: var(--ms-s1); }
.ms-seg__panel { display: none; }

.ms-seg__input:nth-of-type(1):checked ~ .ms-seg__tabs > .ms-seg__label:nth-of-type(1),
.ms-seg__input:nth-of-type(2):checked ~ .ms-seg__tabs > .ms-seg__label:nth-of-type(2),
.ms-seg__input:nth-of-type(3):checked ~ .ms-seg__tabs > .ms-seg__label:nth-of-type(3),
.ms-seg__input:nth-of-type(4):checked ~ .ms-seg__tabs > .ms-seg__label:nth-of-type(4),
.ms-seg__input:nth-of-type(5):checked ~ .ms-seg__tabs > .ms-seg__label:nth-of-type(5) {
  background: var(--ms-red);
  color: var(--ms-white);
}

.ms-seg__input:nth-of-type(1):checked ~ .ms-seg__panels > .ms-seg__panel:nth-child(1),
.ms-seg__input:nth-of-type(2):checked ~ .ms-seg__panels > .ms-seg__panel:nth-child(2),
.ms-seg__input:nth-of-type(3):checked ~ .ms-seg__panels > .ms-seg__panel:nth-child(3),
.ms-seg__input:nth-of-type(4):checked ~ .ms-seg__panels > .ms-seg__panel:nth-child(4),
.ms-seg__input:nth-of-type(5):checked ~ .ms-seg__panels > .ms-seg__panel:nth-child(5) {
  display: block;
  animation: ms-fade 320ms ease both;
}

@keyframes ms-fade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 14. 折叠问答 ---------- */
.ms-details {
  background: var(--ms-white);
  border: 1px solid var(--ms-line);
  border-radius: var(--ms-r-sm);
  overflow: hidden;
}
.ms-details + .ms-details { margin-top: 10px; }
.ms-details > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 20px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ms-ink);
  cursor: pointer;
  list-style: none;
}
.ms-details > summary::-webkit-details-marker { display: none; }
.ms-details > summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--ms-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--ms-red);
}
.ms-details[open] > summary::after { content: "–"; }
.ms-details[open] > summary { border-bottom: 1px solid var(--ms-line); }

/* ---------- 15. 时间轴 ---------- */
.ms-timeline {
  position: relative;
  padding-left: 26px;
  border-left: 2px solid var(--ms-line);
}
.ms-timeline__item { position: relative; padding-bottom: var(--ms-s1); }
.ms-timeline__item:last-child { padding-bottom: 0; }
.ms-timeline__item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 9px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ms-red);
  border: 3px solid var(--ms-paper);
  transition: background-color 220ms ease, transform 220ms ease;
}
.ms-timeline__item.is-visible::before { background: var(--ms-gold); transform: scale(1.15); }
.ms-timeline__time {
  display: block;
  font-family: var(--ms-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--ms-blue);
}
.ms-timeline__text { margin-top: 4px; font-size: 16px; line-height: 1.8; color: var(--ms-gray); }

/* ---------- 16. 装饰线条 ---------- */
.ms-diagonal {
  position: absolute;
  z-index: 0;
  right: -10%;
  bottom: -18%;
  width: 44%;
  aspect-ratio: 1 / 1;
  border-radius: var(--ms-r-lg);
  pointer-events: none;
  background: repeating-linear-gradient(45deg, rgba(200, 16, 46, .22) 0 2px, transparent 2px 14px);
}
.ms-band .ms-diagonal { background: repeating-linear-gradient(45deg, rgba(245, 241, 234, .16) 0 2px, transparent 2px 14px); }

/* ---------- 17. 显现与动效偏好 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 520ms ease, transform 520ms ease;
}
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: no-preference) {
  .ms-dot { animation: ms-pulse 2.4s ease-in-out infinite; }
}
@keyframes ms-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .45; transform: scale(.82); }
}

@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; }
  .ms-seg__panel { animation: none !important; }
  .ms-btn:hover, .ms-nav__cta:hover { transform: none; }
}

/* ---------- 18. 响应式 ---------- */
@media (max-width: 1279px) {
  .ms-shell { grid-template-columns: minmax(0, 1fr); }
  .ms-shell__side { position: static; }
  .ms-nav__link { padding: 8px 12px; font-size: 14px; }
  .ms-nav__cta { padding: 10px 16px; font-size: 14px; }
  .ms-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ms-footer__inner { grid-template-columns: minmax(0, 1fr); gap: var(--ms-s1); }
}

@media (max-width: 980px) {
  :root { --ms-head-h: 68px; }

  .ms-header__inner { flex-wrap: wrap; row-gap: 8px; padding: 10px 16px; }
  .ms-brand__mark { display: none; }
  .ms-brand__short { display: inline; }
  .ms-header__ticker { order: 3; width: 100%; margin: 0; justify-content: center; }
  .ms-navtoggle { display: inline-flex; }

  .ms-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin: 0;
    padding: 18px 16px calc(18px + env(safe-area-inset-bottom, 0px));
    background: var(--ms-black);
    border-radius: var(--ms-r-lg) var(--ms-r-lg) 0 0;
    box-shadow: 0 -18px 44px rgba(18, 16, 15, .38);
    transform: translateY(110%);
    visibility: hidden;
    transition: transform 260ms ease, visibility 260ms linear;
  }
  .ms-nav[data-open] { transform: none; visibility: visible; }

  .ms-nav__list {
    display: flex;
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 8px;
    padding: 0;
    background: transparent;
    overflow-x: auto;
  }
  .ms-nav__link {
    padding: 10px 16px;
    font-size: 15px;
    color: var(--ms-paper);
    background: rgba(245, 241, 234, .08);
  }
  .ms-nav__link:hover { background: rgba(245, 241, 234, .16); color: var(--ms-paper); }
  .ms-nav__link[aria-current="page"] { background: var(--ms-red); color: var(--ms-white); }
  .ms-nav__cta { display: block; width: 100%; text-align: center; background: var(--ms-red); }
  .ms-nav__cta:hover { background: var(--ms-red-deep); }

  .ms-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ms-grid--2, .ms-grid--3, .ms-grid--asym { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .ms-header__ticker { display: none; }
  .ms-header__inner { padding: 8px 14px; }
  .ms-wrap, .ms-shell, .ms-band__inner { padding-left: 14px; padding-right: 14px; }
  .ms-section { padding: var(--ms-s1) 0; }
  .ms-footer__cols { grid-template-columns: minmax(0, 1fr); }
  .ms-footer__base { flex-direction: column; }
  .ms-index__item { grid-template-columns: 40px minmax(0, 1fr); gap: 10px; }
  .ms-seg__tabs { width: 100%; overflow-x: auto; flex-wrap: nowrap; }
}