/* ==========================================================================
   博鱼服务 · 共享站点样式 /assets/site.css
   月白纸面 / 黛青重色 / 朱砂锚点 / 鎏金刻度
   ========================================================================== */

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

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

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

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

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

button {
  font: inherit;
  color: inherit;
}

a {
  color: inherit;
}

/* ---------- tokens ---------- */
:root {
  --paper: #F4F6F2;
  --paper-2: #E4E7E0;
  --ink: #1E3A3C;
  --ink-deep: #131718;
  --ridge: #356065;
  --mist: #7E9AA0;
  --lotus: #C9B6C4;
  --cinnabar: #B5342A;
  --cinnabar-deep: #96281F;
  --gold: #A9873C;
  --snow: #FFFFFF;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --header-h: 56px;
  --shell: 1320px;
  --gutter: clamp(16px, 3vw, 24px);

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 280ms;

  --hard: 5px 5px 0 var(--ink-deep);
  --hard-sm: 3px 3px 0 var(--ink-deep);
  --hair: 1px solid var(--paper-2);
  --edge: 2px solid var(--ink-deep);
}

/* ---------- base ---------- */
body {
  min-height: 100%;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--ink-deep);
}

h1 { font-size: clamp(36px, 5vw, 64px); }
h2 { font-size: clamp(24px, 2.6vw, 30px); }
h3 { font-size: 20px; line-height: 1.35; }
h4 { font-size: 17px; }

p { max-width: 68ch; }

strong { font-weight: 700; }

::selection {
  background-color: var(--cinnabar);
  color: var(--snow);
}

:where(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  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;
}

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

.section {
  padding-block: clamp(48px, 7vw, 96px);
}

.section--tint { background-color: var(--paper-2); }

.section--ink {
  background-color: var(--ink);
  color: var(--paper);
}

.section--ink h1,
.section--ink h2,
.section--ink h3 {
  color: var(--paper);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2vw, 24px);
}

.rule {
  height: 1px;
  border: 0;
  background-color: var(--ridge);
  opacity: 0.32;
}

.rule--strong {
  height: 2px;
  background-color: var(--ink-deep);
  opacity: 1;
}

/* ---------- small typographic parts ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ridge);
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background-color: var(--gold);
}

.score {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.86;
  color: var(--cinnabar);
}

.score--xl {
  font-size: clamp(64px, 9vw, 132px);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: var(--edge);
  background-color: var(--paper);
  color: var(--ink-deep);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}

.btn--primary {
  background-color: var(--cinnabar);
  color: var(--snow);
  box-shadow: var(--hard-sm);
}

.btn--primary:hover {
  background-color: var(--cinnabar-deep);
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--ink-deep);
}

.btn--primary:active {
  transform: translate(3px, 3px);
  box-shadow: none;
}

.btn--ghost {
  background-color: transparent;
  border-color: var(--ridge);
  color: var(--ridge);
}

.btn--ghost:hover {
  background-color: var(--lotus);
  border-color: var(--ink-deep);
  color: var(--ink-deep);
}

.btn--ink {
  background-color: var(--ink-deep);
  color: var(--paper);
  box-shadow: var(--hard-sm);
}

.btn--ink:hover {
  background-color: var(--ridge);
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--ink-deep);
}

/* ---------- breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ridge);
}

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

.breadcrumb li + li::before {
  content: "/";
  color: var(--mist);
}

.breadcrumb a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.breadcrumb a:hover {
  color: var(--cinnabar);
  border-bottom-color: var(--cinnabar);
}

/* ---------- tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--ink-deep);
  background-color: var(--lotus);
  color: var(--ink-deep);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.4;
}

.tag--live {
  background-color: var(--cinnabar);
  border-color: var(--cinnabar);
  color: var(--snow);
}

.tag--gold {
  background-color: transparent;
  border-color: var(--gold);
  color: var(--gold);
}

/* ---------- cards ---------- */
.card {
  padding: clamp(18px, 2vw, 26px);
  background-color: var(--snow);
  border: var(--edge);
  box-shadow: var(--hard);
}

.card--stacked {
  background-color: var(--paper);
  box-shadow: 8px 8px 0 rgba(19, 23, 24, 0.12);
}

.card--stacked:nth-child(even) {
  transform: translateY(14px);
}

/* ---------- media frames ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: var(--paper-2);
  border: var(--edge);
  box-shadow: var(--hard);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(180deg, rgba(126, 154, 160, 0.14) 0%, rgba(19, 23, 24, 0.06) 45%, rgba(19, 23, 24, 0.38) 100%);
}

.media-frame--clean::after { display: none; }

.media-frame--wide { aspect-ratio: 21 / 9; }

.media-frame--tall { aspect-ratio: 3 / 4; }

.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  padding: 6px 10px;
  background-color: var(--ink-deep);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
}

/* ---------- tabs (page level) ---------- */
.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 2px solid var(--ink-deep);
}

.tab {
  padding: 10px 18px;
  border: 2px solid transparent;
  border-bottom: 0;
  background-color: transparent;
  color: var(--ridge);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  cursor: pointer;
}

.tab:hover { background-color: var(--lotus); color: var(--ink-deep); }

.tab[aria-selected="true"] {
  background-color: var(--ink-deep);
  color: var(--paper);
  border-color: var(--ink-deep);
}

.tabpanel { padding-top: clamp(20px, 3vw, 32px); }

.tabpanel[hidden] { display: none; }

/* ---------- reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

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

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: var(--paper);
  border-bottom: 2px solid var(--ink-deep);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 90;
  padding: 10px 16px;
  background-color: var(--ink-deep);
  color: var(--paper);
  border: 2px solid var(--cinnabar);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: top var(--dur) var(--ease);
}

.skip-link:focus { top: 8px; }

.site-header__bar {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.4vw, 26px);
  width: 100%;
  max-width: var(--shell);
  height: var(--header-h);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  text-decoration: none;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  background-color: var(--ink-deep);
  color: var(--paper);
  border: 2px solid var(--ink-deep);
  box-shadow: 2px 2px 0 var(--cinnabar);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1;
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand__name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: 0.08em;
  color: var(--ink-deep);
}

.brand__tagline {
  font-size: 10px;
  line-height: 1.1;
  letter-spacing: 0.2em;
  color: var(--ridge);
}

/* nav */
.site-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.site-nav__list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(6px, 1.2vw, 20px);
}

.site-nav__item { display: flex; }

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  padding: 7px 2px;
  border-bottom: 2px solid transparent;
  color: var(--ink);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.site-nav__index {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.site-nav__link:hover {
  color: var(--ink-deep);
  border-bottom-color: var(--ridge);
}

.site-nav__link[aria-current="page"] {
  color: var(--ink-deep);
  font-weight: 600;
  border-bottom-color: var(--cinnabar);
}

.site-nav__link[aria-current="page"]::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 5px;
  background-color: var(--cinnabar);
}

.site-nav__link[aria-current="page"] .site-nav__index { color: var(--cinnabar); }

/* league switcher */
.league {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  padding-left: clamp(8px, 1.2vw, 16px);
  border-left: 1px solid var(--lotus);
}

.league__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.league__btn {
  min-width: 38px;
  padding: 5px 7px;
  border: 1.5px solid var(--ridge);
  background-color: transparent;
  color: var(--ridge);
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.league__btn:hover {
  background-color: var(--lotus);
  border-color: var(--ink-deep);
  color: var(--ink-deep);
}

.league__btn.is-active {
  background-color: var(--cinnabar);
  border-color: var(--cinnabar);
  color: var(--snow);
}

/* header cta */
.site-header__cta {
  flex: 0 0 auto;
  padding: 9px 14px;
  box-shadow: 3px 3px 0 var(--ink-deep);
}

/* toggle */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 2px solid var(--ink-deep);
  background-color: var(--paper);
  box-shadow: var(--hard-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  cursor: pointer;
}

.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars span {
  height: 2px;
  background-color: var(--ink-deep);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  transform: translateY(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(-5px) rotate(-45deg);
}

/* scroll progress */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  width: 100%;
  height: 3px;
  background-color: var(--cinnabar);
  transform: scaleX(0);
  transform-origin: 0 50%;
  will-change: transform;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background-color: var(--ink);
  color: var(--paper);
  border-top: 6px solid var(--ink-deep);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(40px, 6vw, 72px) var(--gutter) clamp(24px, 4vw, 40px);
}

.site-footer__brand { max-width: 30ch; }

.site-footer__sign {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 0.12em;
  color: var(--snow);
}

.site-footer__tag {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.site-footer__note {
  margin-top: 18px;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(244, 246, 242, 0.74);
}

.footer-col__title {
  padding-top: 10px;
  border-top: 1px solid rgba(244, 246, 242, 0.24);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.footer-col__list {
  margin-top: 14px;
  display: grid;
  gap: 2px;
}

.footer-col__list a {
  display: inline-block;
  padding: 5px 0;
  border-bottom: 1px solid transparent;
  color: rgba(244, 246, 242, 0.82);
  font-size: 13.5px;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.footer-col__list a:hover {
  color: var(--snow);
  border-bottom-color: var(--gold);
}

.footer-contact {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px clamp(24px, 4vw, 56px);
  margin-top: 8px;
  padding-top: clamp(20px, 3vw, 28px);
  border-top: 1px solid rgba(244, 246, 242, 0.2);
  font-style: normal;
}

.footer-contact__row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 13px;
  color: rgba(244, 246, 242, 0.86);
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.footer-contact__val {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--snow);
}

.footer-contact__note {
  flex: 1 1 320px;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(244, 246, 242, 0.6);
}

/* bottom date ruler */
.footer-ruler {
  position: relative;
  height: 40px;
  max-width: var(--shell);
  margin-inline: auto;
  overflow: hidden;
}

.footer-ruler::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 18px;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(244, 246, 242, 0.34) 0 1px,
    transparent 1px 24px
  );
}

.footer-ruler::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 34px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--gold) 0 1px,
    transparent 1px 144px
  );
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 18px var(--gutter) clamp(28px, 4vw, 44px);
  border-top: 1px solid rgba(244, 246, 242, 0.18);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(244, 246, 242, 0.66);
}

.site-footer__copy { max-width: none; }

.site-footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  max-width: none;
}

.site-footer__icp,
.site-footer__year {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1180px) {
  .brand__tagline { display: none; }
  .league__label { display: none; }
  .site-nav__link { font-size: 12.5px; }
}

@media (max-width: 1079px) {
  .site-header__bar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "brand toggle"
      "league cta";
    align-content: center;
    row-gap: 10px;
    column-gap: 12px;
    height: auto;
    padding-block: 10px;
  }

  .brand { grid-area: brand; }
  .nav-toggle { grid-area: toggle; display: inline-flex; justify-self: end; }
  .league { grid-area: league; justify-self: start; padding-left: 0; border-left: 0; }
  .site-header__cta { grid-area: cta; justify-self: end; padding: 8px 12px; }

  .site-nav {
    position: fixed;
    top: var(--nav-top, var(--header-h));
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    padding: 20px var(--gutter) 56px;
    overflow-y: auto;
    background-color: var(--ink);
    border-top: 2px solid var(--ink-deep);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity var(--dur) var(--ease),
                transform var(--dur) var(--ease),
                visibility var(--dur) linear;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav__item { border-bottom: 1px solid rgba(244, 246, 242, 0.16); }

  .site-nav__link {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 18px 4px;
    border-bottom: 0;
    color: var(--paper);
    font-family: var(--font-serif);
    font-size: 22px;
    letter-spacing: 0.02em;
  }

  .site-nav__link:hover {
    color: var(--snow);
    border-bottom-color: transparent;
    background-color: rgba(244, 246, 242, 0.06);
  }

  .site-nav__index { font-size: 11px; color: var(--gold); }

  .site-nav__link[aria-current="page"] {
    color: var(--snow);
    border-bottom-color: transparent;
    text-decoration: underline;
    text-decoration-color: var(--cinnabar);
    text-decoration-thickness: 2px;
    text-underline-offset: 8px;
  }

  .site-nav__link[aria-current="page"]::before {
    top: 50%;
    left: -10px;
    width: 4px;
    height: 22px;
    transform: translateY(-50%);
  }

  .site-nav__link[aria-current="page"] .site-nav__index { color: var(--cinnabar); }

  html.nav-open,
  html.nav-open body { overflow: hidden; }

  .site-footer__inner { grid-template-columns: 1fr 1fr; }
  .site-footer__brand { grid-column: 1 / -1; max-width: 46ch; }
  .footer-contact { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  h1 { font-size: clamp(30px, 8vw, 44px); }
  .site-footer__inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-col__title { padding-top: 8px; }
  .footer-contact { flex-direction: column; gap: 8px; }
  .site-footer__legal { flex-direction: column; align-items: flex-start; gap: 8px; }
  .card--stacked:nth-child(even) { transform: none; }
  .media-frame { box-shadow: var(--hard-sm); }
}

@media (max-width: 400px) {
  .brand__name { font-size: 15px; }
  .brand__mark { width: 26px; height: 26px; font-size: 14px; }
  .league__btn { min-width: 32px; padding: 5px 5px; font-size: 10.5px; }
  .site-header__cta { padding: 7px 10px; font-size: 12px; letter-spacing: 0.02em; }
}

/* ---------- motion preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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