/* ============================================================
   乐思体育 / site.css
   夜场球场绿 · 信号橙 · 深墨蓝数据台
   ============================================================ */

/* ---------- 1. reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

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

ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; border-spacing: 0; }

/* ---------- 2. tokens ---------- */
:root {
  --ink:        #0B1220;
  --ink-deep:   #060A12;
  --ink-soft:   #101A2C;
  --steel:      #2A3646;
  --pitch:      #0FA36B;
  --signal:     #FF6A1A;
  --paper:      #F4F7F9;
  --mist:       #8FA3B8;
  --fit:        #3DDC97;
  --doubt:      #F5B01A;
  --out:        #E5484D;

  --line:        rgba(143, 163, 184, 0.24);
  --line-soft:   rgba(143, 163, 184, 0.13);
  --line-strong: rgba(143, 163, 184, 0.5);

  --font-head: "Archivo", "Source Han Sans SC", "Noto Sans SC", "PingFang SC",
               "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC",
               "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo,
               Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shell: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --grid-gap: clamp(16px, 2vw, 24px);
}

/* ---------- 3. base ---------- */
body {
  background-color: var(--ink);
  background-image:
    linear-gradient(rgba(143, 163, 184, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 163, 184, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--paper);
}

h1 { font-size: clamp(2.6rem, 6.6vw, 5.4rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.25rem; font-weight: 800; }

p { max-width: 62ch; }

.mono {
  font-family: var(--font-mono);
  font-size: 0.94em;
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
}

::selection {
  background: var(--signal);
  color: var(--ink-deep);
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

[data-section],
section[id],
h2[id],
h3[id] {
  scroll-margin-top: 136px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- 4. layout ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--grid-gap);
}

.grid > * { grid-column: 1 / -1; min-width: 0; }

@media (min-width: 720px) {
  .grid { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .grid > .md-4 { grid-column: span 4; }
}

@media (min-width: 1040px) {
  .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .grid > .lg-3 { grid-column: span 3; }
  .grid > .lg-4 { grid-column: span 4; }
  .grid > .lg-5 { grid-column: span 5; }
  .grid > .lg-6 { grid-column: span 6; }
  .grid > .lg-7 { grid-column: span 7; }
  .grid > .lg-8 { grid-column: span 8; }
  .grid > .lg-9 { grid-column: span 9; }
  .grid > .lg-12 { grid-column: span 12; }
}

/* ---------- 5. skip link ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 18px;
  background: var(--signal);
  color: var(--ink-deep);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 12px;
}

/* ---------- 6. header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--ink-deep);
  border-bottom: 1px solid var(--steel);
}

/* 6.1 brand / explain layer */
.header-upper {
  position: relative;
  overflow: hidden;
  background: linear-gradient(100deg, #060A12 0%, #0B1220 52%, #0d1c2e 100%);
  border-bottom: 1px solid var(--line);
}

.header-upper::after {
  content: "";
  position: absolute;
  top: -60%;
  right: -4%;
  width: min(32%, 380px);
  height: 220%;
  background: linear-gradient(90deg, rgba(15, 163, 107, 0.24), rgba(15, 163, 107, 0));
  transform: skewX(-18deg);
  pointer-events: none;
}

.header-upper__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  padding-block: 12px;
}

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

.brand__mark {
  display: grid;
  gap: 3px;
  width: 18px;
  flex: 0 0 auto;
}

.brand__mark span {
  display: block;
  height: 4px;
  background: var(--pitch);
}

.brand__mark span:nth-child(2) {
  width: 72%;
  background: var(--signal);
}

.brand__mark span:nth-child(3) {
  width: 42%;
  background: var(--paper);
}

.brand__text {
  display: block;
  line-height: 1.25;
}

.brand__name {
  display: block;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.brand__slogan {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--mist);
}

.season-tag {
  display: none;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
  border: 1px solid var(--line);
  padding: 3px 9px;
  white-space: nowrap;
}

.header-motto {
  display: none;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--paper);
  max-width: none;
  border-left: 1px solid var(--line-strong);
  padding-left: 18px;
}

.quick-entries {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}

.quick-entry {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 11px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--mist);
  border: 1px solid var(--line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease),
              background-color 0.2s var(--ease);
}

.quick-entry:hover {
  color: var(--ink-deep);
  background: var(--signal);
  border-color: var(--signal);
}

@media (min-width: 720px) {
  .season-tag { display: inline-flex; }
}

@media (min-width: 1040px) {
  .header-upper__inner {
    flex-wrap: nowrap;
    padding-block: 14px;
  }
  .header-motto {
    display: block;
    flex: 1 1 auto;
    order: 3;
  }
  .quick-entries {
    order: 4;
    margin-left: 0;
    flex: 0 0 auto;
  }
}

/* 6.2 column layer */
.header-lower {
  position: relative;
  background: var(--ink);
}

.header-lower__inner {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 16px;
  min-height: 54px;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 2px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--paper);
}

.nav-toggle__bars {
  display: grid;
  gap: 4px;
  width: 20px;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: var(--signal);
  transition: width 0.2s var(--ease);
}

.nav-toggle__bars span:nth-child(2) { width: 70%; }
.nav-toggle__bars span:nth-child(3) { width: 45%; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span { width: 100%; }

/* mobile nav panel */
.site-nav {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  z-index: 60;
  background: var(--ink-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--steel);
  box-shadow: 0 28px 48px rgba(0, 0, 0, 0.5);
}

.site-nav[data-open] { display: block; }

.site-nav__list {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 6px var(--gutter) 20px;
}

.site-nav__list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--mist);
  border-bottom: 1px solid var(--line-soft);
  transition: color 0.2s var(--ease);
}

.site-nav__list a::after {
  content: "";
  display: block;
  width: 6px;
  height: 6px;
  flex: 0 0 auto;
  background: var(--steel);
}

.site-nav__list a:hover { color: var(--paper); }

.site-nav__list a[aria-current="page"] { color: var(--paper); }
.site-nav__list a[aria-current="page"]::after { background: var(--signal); }

.header-status {
  display: none;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--mist);
  max-width: none;
}

.header-status__dot {
  width: 7px;
  height: 7px;
  background: var(--pitch);
  animation: statusPulse 2.4s var(--ease) infinite;
}

@keyframes statusPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.28; }
}

@media (min-width: 960px) {
  .nav-toggle { display: none; }

  .site-nav,
  .site-nav[data-open] {
    position: static;
    display: flex;
    flex: 1 1 auto;
    align-items: stretch;
    background: none;
    border: 0;
    box-shadow: none;
    min-width: 0;
  }

  .site-nav__list {
    flex-direction: row;
    align-items: stretch;
    flex-wrap: wrap;
    gap: clamp(10px, 2vw, 30px);
    max-width: none;
    margin: 0;
    padding: 0;
  }

  .site-nav__list li { display: flex; }

  .site-nav__list a {
    align-items: center;
    padding: 0;
    border-bottom: 0;
    border-top: 2px solid transparent;
    color: var(--mist);
  }

  .site-nav__list a::after { display: none; }

  .site-nav__list a:hover,
  .site-nav__list a[aria-current="page"] {
    color: var(--paper);
    border-top-color: var(--signal);
  }
}

@media (min-width: 1040px) {
  .header-status { display: inline-flex; }
}

/* 6.3 scroll progress */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: transparent;
  pointer-events: none;
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--pitch), var(--signal));
}

/* ---------- 7. footer ---------- */
.site-footer {
  background: var(--ink-deep);
  border-top: 1px solid var(--steel);
  margin-top: clamp(48px, 7vw, 104px);
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  padding-block: clamp(38px, 6vw, 72px);
}

.footer-brand .brand { margin-bottom: 16px; }

.footer-contact {
  font-size: 13.5px;
  line-height: 2;
  color: var(--mist);
  max-width: 30em;
}

.footer-contact .mono {
  color: var(--paper);
  font-size: 13px;
  letter-spacing: 0.05em;
}

.footer-note {
  margin-top: 12px;
  max-width: 30em;
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--mist);
  border-left: 2px solid var(--steel);
  padding-left: 12px;
}

.footer-col h3 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--paper);
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.footer-col__list a {
  display: inline-block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--mist);
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.footer-col__list a:hover {
  color: var(--signal);
  transform: translateX(3px);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 20px;
  border-top: 1px solid var(--steel);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.footer-legal p { max-width: none; }

@media (min-width: 720px) {
  .footer-main { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (min-width: 1040px) {
  .footer-main {
    grid-template-columns: 1.5fr repeat(4, minmax(0, 1fr));
  }
  .footer-brand { grid-column: auto; }
}

/* ---------- 8. shared components ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--signal);
}

.eyebrow::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--signal);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(20px, 3vw, 32px);
}

.section-title {
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  letter-spacing: -0.02em;
}

.prose {
  font-size: 16.5px;
  line-height: 1.8;
  color: #DCE5EE;
  max-width: 34em;
}

.prose p + p { margin-top: 1em; }

.prose ul,
.prose ol {
  margin-top: 0.9em;
  padding-left: 1.2em;
  list-style: none;
}

.prose ul li,
.prose ol li {
  position: relative;
  padding-left: 1.1em;
  margin-bottom: 0.5em;
}

.prose ul li::before,
.prose ol li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  background: var(--pitch);
}

.prose strong { color: var(--paper); font-weight: 700; }

.prose a {
  color: var(--signal);
  border-bottom: 1px solid rgba(255, 106, 26, 0.45);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li::after {
  content: "/";
  color: var(--steel);
}

.breadcrumb li:last-child::after { display: none; }

.breadcrumb a { transition: color 0.2s var(--ease); }
.breadcrumb a:hover { color: var(--signal); }

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 22px;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--steel);
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease),
              border-color 0.2s var(--ease);
}

.btn:hover {
  color: var(--signal);
  border-color: var(--signal);
}

.btn--signal {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink-deep);
}

.btn--signal:hover {
  background: #FF8339;
  border-color: #FF8339;
  color: var(--ink-deep);
}

.btn--pitch {
  background: var(--pitch);
  border-color: var(--pitch);
  color: #04160E;
}

.btn--pitch:hover {
  background: #15C383;
  border-color: #15C383;
  color: #04160E;
}

.btn--block { width: 100%; }

/* tags & status chips */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--mist);
  border: 1px solid var(--line);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.6;
  border: 1px solid currentColor;
  white-space: nowrap;
}

.status-chip--fit   { color: var(--fit); }
.status-chip--doubt { color: var(--doubt); }
.status-chip--out   { color: var(--out); }
.status-chip--new   { color: var(--signal); }
.status-chip--info  { color: var(--mist); }

/* data table */
.data-table {
  width: 100%;
  background: var(--paper);
  color: var(--ink);
  font-size: 14.5px;
}

.data-table caption {
  caption-side: top;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
  padding-bottom: 8px;
}

.data-table th {
  background: var(--steel);
  color: var(--paper);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-align: left;
  padding: 10px 12px;
  white-space: nowrap;
}

.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(11, 18, 32, 0.12);
  vertical-align: top;
}

.data-table tbody tr:last-child td { border-bottom: 0; }

.data-table td.num,
.data-table th.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
  letter-spacing: 0.02em;
}

/* media frames */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--steel);
  border: 1px solid var(--steel);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.32s var(--ease);
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(11, 18, 32, 0.16), rgba(11, 18, 32, 0.74));
  pointer-events: none;
}

.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3  { aspect-ratio: 4 / 3; }
.media--1x1  { aspect-ratio: 1 / 1; }
.media--3x4  { aspect-ratio: 3 / 4; }

.media:hover img { transform: scale(1.02); }

.media--framed::before {
  content: "";
  position: absolute;
  inset: 10px;
  z-index: 2;
  border: 1px solid rgba(255, 106, 26, 0.55);
  pointer-events: none;
}

.media__tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 3;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--paper);
  background: rgba(6, 10, 18, 0.74);
  border-left: 2px solid var(--signal);
  padding: 5px 10px;
}

/* reveal protocol */
[data-reveal] { opacity: 1; }

.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.32s var(--ease), transform 0.32s var(--ease);
}

.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* back to top */
.to-top {
  position: fixed;
  right: clamp(14px, 2.4vw, 32px);
  bottom: clamp(14px, 2.4vw, 32px);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 15px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--paper);
  background: var(--ink-deep);
  border: 1px solid var(--steel);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease),
              visibility 0.28s var(--ease), border-color 0.2s var(--ease),
              color 0.2s var(--ease);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  color: var(--signal);
  border-color: var(--signal);
}

.to-top__arrow {
  display: block;
  width: 8px;
  height: 8px;
  border-left: 2px solid currentColor;
  border-top: 2px solid currentColor;
  transform: rotate(45deg);
}

/* toc active state (page-level) */
[data-toc] a.is-active {
  color: var(--signal);
  border-left-color: var(--signal);
}

/* ---------- 9. 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;
  }

  .js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .media:hover img { transform: none; }
}