/* ==========================================================================
   半岛体育 · /assets/site.css
   沿海灯塔 × 赛场记分牌 / 技术蓝图网格 / 暖纸 + 深墨 + 印刷色
   ========================================================================== */

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

img, picture, svg, video { display: block; max-width: 100%; }

ul, ol { list-style: none; padding: 0; }

button { font: inherit; }

/* ---------- tokens ---------- */
:root {
  --cs-deep: #0B2A4A;
  --cs-abyss: #071A2F;
  --cs-lake: #2E8FA3;
  --cs-lake-soft: #A8D8DF;
  --cs-sand: #F2E8D5;
  --cs-sand-2: #E4D3B4;
  --cs-orange: #E85D2A;
  --cs-lime: #B8F24A;
  --cs-ink: #141B20;
  --cs-fog: #FBF8F0;

  --cs-line: rgba(20, 27, 32, 0.14);
  --cs-line-strong: rgba(20, 27, 32, 0.26);
  --cs-line-light: rgba(168, 216, 223, 0.28);
  --cs-line-lime: rgba(184, 242, 74, 0.42);

  --cs-font-head: "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --cs-font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --cs-font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --cs-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --cs-wide: 1240px;
  --cs-gutter: clamp(20px, 5vw, 56px);
  --cs-header-h: 94px;
  --cs-radius: 18px;
}

/* ---------- base ---------- */
body {
  background-color: var(--cs-sand);
  background-image:
    radial-gradient(1200px 620px at 88% -8%, rgba(168, 216, 223, 0.28), transparent 62%),
    repeating-linear-gradient(180deg, rgba(20, 27, 32, 0.035) 0 1px, transparent 1px 96px);
  color: var(--cs-ink);
  font-family: var(--cs-font-body);
  font-size: clamp(15px, 0.5vw + 13.6px, 17px);
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--cs-font-head);
  font-weight: 800;
  font-stretch: condensed;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--cs-deep);
  text-wrap: balance;
}

p { text-wrap: pretty; }

a {
  color: var(--cs-lake);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { color: var(--cs-deep); }

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

main {
  display: block;
  padding-block-start: var(--cs-header-h);
  scroll-margin-block-start: var(--cs-header-h);
}

::selection {
  background: var(--cs-lime);
  color: var(--cs-abyss);
}

/* ---------- skip link ---------- */
.cs-skip {
  position: fixed;
  inset-block-start: 10px;
  inset-inline-start: 10px;
  z-index: 400;
  transform: translateY(-180%);
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--cs-orange);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  box-shadow: 0 12px 26px -14px rgba(7, 26, 47, 0.9);
  transition: transform 0.18s var(--cs-ease);
}

.cs-skip:focus,
.cs-skip:focus-visible {
  transform: translateY(0);
  color: #fff;
}

/* ---------- scroll progress ---------- */
.cs-progress {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  height: 3px;
  z-index: 300;
  pointer-events: none;
  background: rgba(11, 42, 74, 0.14);
}

.cs-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cs-orange) 0%, var(--cs-lime) 100%);
}

/* ---------- header ---------- */
.cs-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 200;
  padding: clamp(10px, 1.6vw, 18px) clamp(12px, 3vw, 28px) 0;
  pointer-events: none;
}

.cs-header__inner {
  position: relative;
  pointer-events: auto;
  width: 100%;
  max-width: var(--cs-wide);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  padding: 10px 12px 10px 16px;
  border: 1px solid var(--cs-line-light);
  border-radius: 999px;
  background: rgba(11, 42, 74, 0.74);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  box-shadow: 0 20px 44px -30px rgba(7, 26, 47, 0.95);
  transition: background-color 0.24s var(--cs-ease), box-shadow 0.24s var(--cs-ease), padding 0.24s var(--cs-ease);
}

.cs-header__inner::after {
  content: "";
  position: absolute;
  inset-block-start: 0;
  inset-inline: 22px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(168, 216, 223, 0.7), transparent);
  opacity: 0.55;
  pointer-events: none;
}

.cs-header[data-scrolled="true"] .cs-header__inner {
  background: rgba(7, 26, 47, 0.94);
  padding-block: 6px;
  box-shadow: 0 26px 52px -26px rgba(7, 26, 47, 0.95);
}

/* brand */
.cs-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--cs-sand);
  flex: 0 0 auto;
}

.cs-brand:hover { color: var(--cs-fog); }

.cs-brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--cs-line-light);
  background: radial-gradient(circle at 50% 50%, rgba(46, 143, 163, 0.4), transparent 70%);
}

.cs-brand__mark::before,
.cs-brand__mark::after {
  content: "";
  position: absolute;
  background: rgba(168, 216, 223, 0.5);
}

.cs-brand__mark::before { inset-inline: 4px; inset-block-start: 50%; height: 1px; }
.cs-brand__mark::after { inset-block: 4px; inset-inline-start: 50%; width: 1px; }

.cs-brand__beacon {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cs-lime);
  box-shadow: 0 0 0 4px rgba(184, 242, 74, 0.16);
}

.cs-brand__text { display: grid; gap: 1px; }

.cs-brand__name {
  font-family: var(--cs-font-head);
  font-weight: 800;
  font-stretch: condensed;
  font-size: 20px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--cs-sand);
}

.cs-brand__sub {
  font-family: var(--cs-font-mono);
  font-size: 9.5px;
  line-height: 1;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cs-lake-soft);
}

/* nav */
.cs-nav { margin-inline: auto; }

.cs-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.cs-nav__item { display: block; }

.cs-nav__link {
  display: block;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: rgba(242, 232, 213, 0.78);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.16s var(--cs-ease), background-color 0.16s var(--cs-ease);
}

.cs-nav__link:hover {
  color: var(--cs-fog);
  background: rgba(168, 216, 223, 0.14);
}

.cs-nav__link[aria-current="page"] {
  color: var(--cs-lime);
  background: rgba(184, 242, 74, 0.1);
  box-shadow: inset 0 -2px 0 0 var(--cs-lime);
}

/* header actions */
.cs-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.cs-header__status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--cs-font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(168, 216, 223, 0.86);
  white-space: nowrap;
}

.cs-header__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cs-lime);
  box-shadow: 0 0 0 3px rgba(184, 242, 74, 0.18);
}

/* nav toggle */
.cs-nav-toggle {
  display: none;
  place-content: center;
  gap: 4px;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--cs-line-light);
  border-radius: 999px;
  background: rgba(168, 216, 223, 0.1);
  color: var(--cs-sand);
  cursor: pointer;
  flex: 0 0 auto;
  transition: background-color 0.16s var(--cs-ease);
}

.cs-nav-toggle:hover { background: rgba(168, 216, 223, 0.2); }

.cs-nav-toggle__bar {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.22s var(--cs-ease), opacity 0.16s var(--cs-ease);
}

.cs-header[data-open="true"] .cs-nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.cs-header[data-open="true"] .cs-nav-toggle__bar:nth-child(2) { opacity: 0; }
.cs-header[data-open="true"] .cs-nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- buttons ---------- */
.cs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--cs-font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.16s var(--cs-ease), color 0.16s var(--cs-ease), border-color 0.16s var(--cs-ease), transform 0.16s var(--cs-ease);
}

.cs-btn--primary {
  background: var(--cs-orange);
  color: #fff;
  box-shadow: 0 14px 28px -18px rgba(232, 93, 42, 0.95);
}

.cs-btn--primary:hover {
  background: #cf4a1c;
  color: #fff;
  transform: translateY(-1px);
}

.cs-btn--ghost {
  background: transparent;
  color: var(--cs-sand);
  border-color: var(--cs-line-light);
}

.cs-btn--ghost:hover {
  background: rgba(168, 216, 223, 0.14);
  color: var(--cs-fog);
}

.cs-btn--sm {
  padding: 9px 16px;
  font-size: 13px;
}

/* ---------- layout primitives ---------- */
.cs-shell {
  width: min(var(--cs-wide), calc(100% - var(--cs-gutter) * 2));
  margin-inline: auto;
}

.cs-section { padding-block: clamp(52px, 8vw, 108px); }
.cs-section--flush { padding-block: 0; }

.cs-section--deep {
  background: var(--cs-deep);
  color: rgba(242, 232, 213, 0.86);
}

.cs-section--deep h1,
.cs-section--deep h2,
.cs-section--deep h3 { color: var(--cs-sand); }

.cs-section--deep a { color: var(--cs-lake-soft); }
.cs-section--deep a:hover { color: var(--cs-lime); }

.cs-grid {
  display: grid;
  gap: clamp(18px, 2.4vw, 32px);
}

.cs-grid--split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.cs-grid--halves { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cs-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.cs-prose { max-width: 68ch; }
.cs-prose > * + * { margin-block-start: 1.1em; }

/* ---------- blueprint details ---------- */
.cs-label {
  display: inline-block;
  font-family: var(--cs-font-mono);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cs-lake);
}

.cs-tide {
  height: 18px;
  border-block-start: 1px solid var(--cs-line);
  background-image: repeating-linear-gradient(90deg, var(--cs-line) 0 1px, transparent 1px 28px);
  background-repeat: repeat-x;
  background-size: auto 6px;
  background-position: 0 0;
}

.cs-card {
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--cs-line);
  border-radius: var(--cs-radius);
  background: var(--cs-fog);
}

.cs-glass {
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid var(--cs-line-light);
  border-radius: var(--cs-radius);
  background: rgba(251, 248, 240, 0.12);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  backdrop-filter: blur(14px) saturate(130%);
}

/* ---------- breadcrumb ---------- */
.cs-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 14px;
  font-family: var(--cs-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--cs-lake);
}

.cs-breadcrumb a {
  color: var(--cs-lake);
  text-decoration: none;
}

.cs-breadcrumb a:hover {
  color: var(--cs-deep);
  text-decoration: underline;
}

.cs-breadcrumb__sep { opacity: 0.45; }

.cs-breadcrumb [aria-current="page"] {
  color: var(--cs-ink);
  font-weight: 700;
}

/* ---------- media container ---------- */
.cs-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--cs-line);
  border-radius: var(--cs-radius);
  background: var(--cs-deep);
}

.cs-media > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cs-media--wide { aspect-ratio: 21 / 9; }
.cs-media--tall { aspect-ratio: 3 / 4; }

/* ---------- reveal ---------- */
[data-reveal] {
  transition: opacity 0.34s var(--cs-ease), transform 0.34s var(--cs-ease);
}

[data-reveal-state="hidden"] {
  opacity: 0;
  transform: translateY(20px);
}

[data-reveal-state="shown"] {
  opacity: 1;
  transform: none;
}

/* ---------- footer ---------- */
.cs-footer {
  position: relative;
  overflow: hidden;
  padding-block: clamp(52px, 7vw, 96px) clamp(22px, 3vw, 34px);
  background: linear-gradient(180deg, var(--cs-deep) 0%, var(--cs-abyss) 68%);
  color: rgba(242, 232, 213, 0.82);
}

.cs-footer__tide {
  position: absolute;
  inset-block-start: 0;
  inset-inline: 0;
  height: 58px;
  pointer-events: none;
  border-block-start: 1px solid var(--cs-line-light);
  background-image:
    repeating-linear-gradient(90deg, rgba(168, 216, 223, 0.24) 0 1px, transparent 1px 44px),
    linear-gradient(180deg, rgba(46, 143, 163, 0.26), transparent);
  background-repeat: repeat-x, no-repeat;
  background-size: auto 100%, 100% 100%;
}

.cs-footer__inner {
  position: relative;
  width: min(var(--cs-wide), calc(100% - var(--cs-gutter) * 2));
  margin-inline: auto;
  padding-block-start: clamp(22px, 4vw, 44px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.5fr) minmax(0, 0.9fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.cs-footer__brand { display: grid; gap: 12px; }

.cs-footer__logo {
  display: inline-block;
  font-family: var(--cs-font-head);
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 800;
  font-stretch: condensed;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cs-sand);
  text-decoration: none;
}

.cs-footer__logo:hover { color: var(--cs-lime); }

.cs-footer__line {
  font-family: var(--cs-font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-lake-soft);
}

.cs-footer__note {
  max-width: 30ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(242, 232, 213, 0.6);
}

.cs-footer__coords {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-block-start: 6px;
  padding-block-start: 12px;
  border-block-start: 1px solid rgba(168, 216, 223, 0.2);
  font-family: var(--cs-font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(168, 216, 223, 0.72);
}

.cs-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 36px);
}

.cs-footer__col { min-width: 0; }
.cs-footer__col:nth-child(2) { padding-block-start: 14px; }
.cs-footer__col:nth-child(3) { padding-block-start: 28px; }

.cs-footer__title {
  margin-block-end: 12px;
  font-family: var(--cs-font-mono);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cs-lime);
}

.cs-footer__list { display: grid; gap: 1px; }

.cs-footer__link {
  display: inline-block;
  padding-block: 6px;
  font-size: 14.5px;
  color: rgba(242, 232, 213, 0.82);
  text-decoration: none;
  border-block-end: 1px solid transparent;
  transition: color 0.16s var(--cs-ease), border-color 0.16s var(--cs-ease);
}

.cs-footer__link:hover,
.cs-footer__link:focus-visible {
  color: var(--cs-fog);
  border-block-end-color: var(--cs-lake);
}

.cs-footer__contact { display: grid; gap: 2px; }

.cs-footer__field {
  padding-block: 9px;
  border-block-end: 1px dashed rgba(168, 216, 223, 0.18);
}

.cs-footer__field:last-child { border-block-end: 0; }

.cs-footer__key {
  display: block;
  margin-block-end: 4px;
  font-family: var(--cs-font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(168, 216, 223, 0.7);
}

.cs-footer__value {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--cs-sand);
  overflow-wrap: anywhere;
}

.cs-footer__value--mono {
  font-family: var(--cs-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.01em;
}

.cs-copy {
  padding: 5px 11px;
  border: 1px solid var(--cs-line-lime);
  border-radius: 999px;
  background: rgba(184, 242, 74, 0.1);
  color: var(--cs-lime);
  font-family: var(--cs-font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1.4;
  cursor: pointer;
  transition: background-color 0.16s var(--cs-ease), color 0.16s var(--cs-ease), border-color 0.16s var(--cs-ease);
}

.cs-copy:hover {
  background: var(--cs-lime);
  color: var(--cs-abyss);
}

.cs-copy[data-copy-state="done"] {
  background: var(--cs-lime);
  border-color: var(--cs-lime);
  color: var(--cs-abyss);
}

.cs-copy[data-copy-state="fail"] {
  background: var(--cs-orange);
  border-color: var(--cs-orange);
  color: #fff;
}

.cs-footer__meta {
  position: relative;
  width: min(var(--cs-wide), calc(100% - var(--cs-gutter) * 2));
  margin-inline: auto;
  margin-block-start: clamp(30px, 5vw, 62px);
  padding-block-start: 18px;
  border-block-start: 1px solid rgba(168, 216, 223, 0.18);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  font-family: var(--cs-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(242, 232, 213, 0.52);
}

.cs-footer__copy,
.cs-footer__icp { margin: 0; }

.cs-footer__icp { color: rgba(168, 216, 223, 0.7); }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .cs-footer__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .cs-footer__contact { grid-column: 1 / -1; }
  .cs-footer__col:nth-child(3) { padding-block-start: 0; }
}

@media (max-width: 960px) {
  :root { --cs-header-h: 88px; }

  .cs-nav-toggle { display: grid; }

  .cs-header__status { display: none; }

  .cs-nav {
    position: absolute;
    inset-inline: 0;
    inset-block-start: calc(100% + 10px);
    margin-inline: 0;
    display: none;
    padding: 10px;
    max-height: min(68vh, 520px);
    overflow-y: auto;
    border: 1px solid var(--cs-line-light);
    border-radius: 24px;
    background: rgba(7, 26, 47, 0.97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    box-shadow: 0 30px 60px -30px rgba(7, 26, 47, 1);
  }

  .cs-header[data-open="true"] .cs-nav {
    display: block;
    animation: cs-drop 0.22s var(--cs-ease) both;
  }

  .cs-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .cs-nav__link {
    padding: 13px 16px;
    border-radius: 14px;
    font-size: 15px;
  }

  .cs-nav__link[aria-current="page"] { box-shadow: inset 3px 0 0 0 var(--cs-lime); }

  .cs-header__actions { margin-inline-start: auto; }

  .cs-grid--split,
  .cs-grid--halves,
  .cs-grid--three { grid-template-columns: minmax(0, 1fr); }
}

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

@media (max-width: 720px) {
  .cs-header__inner { padding-inline: 12px 10px; }
  .cs-brand__sub { display: none; }
  .cs-brand__name { font-size: 18px; }
  .cs-brand__mark { width: 32px; height: 32px; }

  .cs-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .cs-footer__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cs-footer__col:nth-child(2),
  .cs-footer__col:nth-child(3) { padding-block-start: 0; }
  .cs-footer__note { max-width: 42ch; }
  .cs-footer__meta { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 420px) {
  .cs-btn--sm { padding: 8px 13px; font-size: 12.5px; }
  .cs-header__actions .cs-btn { white-space: nowrap; }
}

/* ---------- reduced motion ---------- */
@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;
    scroll-behavior: auto !important;
  }

  [data-reveal-state="hidden"] {
    opacity: 1;
    transform: none;
  }

  .cs-btn--primary:hover { transform: none; }
}