/* ==========================================================================
   乐鱼赛场 · /assets/site.css
   深海赛事控制台：墨蓝底、橙色信号、青绿数据线、2px 描边与 8px 硬阴影
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  background: #071A26;
}

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

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

a { color: inherit; text-decoration: none; }

table { border-collapse: collapse; width: 100%; }

hr { border: 0; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #071A26;
  --ink-2: #0E2C3E;
  --ink-3: #133A4E;
  --orange: #FF6A1F;
  --orange-soft: #FFB27A;
  --teal: #2FD3C0;
  --wine: #7C2338;
  --indigo: #3B3486;
  --paper: #F2EDE3;
  --white: #FBF8F2;
  --gray: #8C9AA6;

  --rule: rgba(251, 248, 242, 0.16);
  --rule-strong: rgba(251, 248, 242, 0.34);

  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-cond: "Barlow Condensed", "Arial Narrow", var(--font-body);
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell: 1440px;
  --pad: 20px;
  --bar-h: 40px;
  --nav-h: 64px;

  --shadow-hard: 8px 8px 0 rgba(2, 10, 16, 0.55);
  --shadow-soft: 4px 4px 0 rgba(2, 10, 16, 0.45);

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --t1: 120ms;
  --t2: 200ms;
  --t3: 320ms;
}

@media (min-width: 600px) { :root { --pad: 32px; } }
@media (min-width: 900px) { :root { --pad: 48px; } }

/* ---------- 3. Base / 中文排版 ---------- */
body {
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

@media (min-width: 900px) {
  body { font-size: 17px; }
}

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

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

main { display: block; }

#main-content { scroll-margin-top: calc(var(--nav-h) + 20px); }

h1, .h1 {
  font-weight: 700;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h2, .h2 {
  font-weight: 700;
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.28;
  letter-spacing: -0.005em;
}

h3, .h3 {
  font-weight: 700;
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.45;
}

p + p { margin-top: 0.9em; }

/* ---------- 4. 通用工具 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.shell--narrow { max-width: 720px; }

.section { padding-block: 56px; }
@media (min-width: 900px) { .section { padding-block: 88px; } }

.section--tight { padding-block: 32px; }
@media (min-width: 900px) { .section--tight { padding-block: 48px; } }

.divider {
  height: 2px;
  background: var(--rule);
  margin-block: 40px;
}

@media (min-width: 900px) { .divider { margin-block: 64px; } }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 5. 排版元件 ---------- */
.display {
  font-family: var(--font-body);
  font-weight: 200;
  font-size: clamp(56px, 9vw, 168px);
  line-height: 0.92;
  letter-spacing: -0.03em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--orange-soft);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--orange);
  flex: 0 0 auto;
}

.coord {
  display: inline-block;
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  transform: skewX(-6deg);
}

.num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.stack { display: flex; flex-direction: column; gap: 16px; }
.stack--lg { gap: 32px; }

.grid { display: grid; gap: 24px; }

.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }

@media (min-width: 700px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid { gap: 32px; }
}

@media (min-width: 1060px) {
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 2px solid var(--rule-strong);
  border-radius: 2px;
  background: transparent;
  color: var(--white);
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.92rem;
  line-height: 1.2;
  letter-spacing: 0.06em;
  box-shadow: var(--shadow-soft);
  transition:
    transform var(--t1) var(--ease),
    box-shadow var(--t1) var(--ease),
    background-color var(--t1) var(--ease),
    border-color var(--t1) var(--ease),
    color var(--t1) var(--ease);
}

.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 rgba(2, 10, 16, 0.55);
}

.btn:active {
  transform: translate(0, 0);
  box-shadow: 2px 2px 0 rgba(2, 10, 16, 0.55);
}

.btn--primary {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

.btn--primary:hover {
  background: var(--orange-soft);
  border-color: var(--orange-soft);
}

.btn--ghost {
  border-color: var(--rule-strong);
  background: rgba(251, 248, 242, 0.04);
  color: var(--white);
}

.btn--ghost:hover {
  border-color: var(--orange-soft);
  color: var(--orange-soft);
}

.btn--sm {
  padding: 7px 13px;
  font-size: 0.82rem;
}

/* ---------- 7. 面板 / 展签 ---------- */
.surface {
  background: var(--ink-2);
  border: 2px solid var(--rule);
  border-radius: 2px;
  box-shadow: var(--shadow-hard);
  padding: 24px;
}

.surface--wine {
  background: var(--wine);
  border-color: rgba(251, 248, 242, 0.3);
}

.surface--indigo {
  background: var(--indigo);
  border-color: rgba(251, 248, 242, 0.3);
}

.surface--paper {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--ink);
  box-shadow: 8px 8px 0 rgba(2, 10, 16, 0.35);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid rgba(47, 211, 192, 0.45);
  border-radius: 2px;
  background: rgba(47, 211, 192, 0.08);
  color: var(--teal);
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.tag--orange {
  border-color: rgba(255, 106, 31, 0.5);
  background: rgba(255, 106, 31, 0.1);
  color: var(--orange-soft);
}

.tag--teal {
  border-color: rgba(47, 211, 192, 0.45);
  background: rgba(47, 211, 192, 0.08);
  color: var(--teal);
}

/* ---------- 8. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 20px 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--gray);
}

.crumbs a {
  color: rgba(251, 248, 242, 0.8);
  transition: color var(--t1) var(--ease);
}

.crumbs a:hover { color: var(--orange-soft); }

.crumbs__sep { color: var(--rule-strong); }

.crumbs [aria-current="page"] { color: var(--orange-soft); }

/* ---------- 9. 正文 ---------- */
.prose { max-width: 38em; }

.prose > * + * { margin-top: 1.15em; }

.prose h2 { margin-top: 2.2em; }
.prose h3 { margin-top: 1.8em; }

.prose ul {
  display: flex;
  flex-direction: column;
  gap: 0.5em;
}

.prose ul li {
  position: relative;
  padding-left: 1.5em;
}

.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 10px;
  height: 2px;
  background: var(--orange);
}

.prose a {
  color: var(--orange-soft);
  border-bottom: 1px solid rgba(255, 178, 122, 0.45);
  transition: border-color var(--t1) var(--ease), color var(--t1) var(--ease);
}

.prose a:hover {
  color: var(--white);
  border-bottom-color: var(--white);
}

.prose blockquote {
  border-left: 3px solid var(--teal);
  padding-left: 1.2em;
  color: rgba(251, 248, 242, 0.82);
}

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

/* ---------- 10. 数据表 ---------- */
.data-table {
  border: 2px solid var(--rule);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

.data-table th,
.data-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}

.data-table thead th {
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  background: rgba(47, 211, 192, 0.06);
}

.data-table tbody tr {
  transition: background-color var(--t1) var(--ease);
}

.data-table tbody tr:hover { background: rgba(255, 106, 31, 0.08); }

.data-table td.is-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 11. 图片容器（页面阶段放置占位） ---------- */
.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 2px solid var(--rule);
  border-radius: 2px;
  background: linear-gradient(135deg, #0E2C3E 0%, #071A26 58%, #0B2434 100%);
  box-shadow: var(--shadow-hard);
  width: 100%;
}

.img-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, transparent 0 47px, rgba(47, 211, 192, 0.12) 47px 48px),
    repeating-linear-gradient(0deg, transparent 0 47px, rgba(47, 211, 192, 0.08) 47px 48px);
  pointer-events: none;
}

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

.img-frame[data-ratio="16x9"] { aspect-ratio: 16 / 9; }
.img-frame[data-ratio="4x3"] { aspect-ratio: 4 / 3; }
.img-frame[data-ratio="1x1"] { aspect-ratio: 1 / 1; }
.img-frame[data-ratio="21x9"] { aspect-ratio: 21 / 9; }

.img-frame__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  padding: 6px 12px;
  background: var(--ink);
  border-top: 2px solid var(--orange);
  border-right: 2px solid var(--orange);
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange-soft);
}

/* ---------- 12. Skip link ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  background: var(--orange);
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 2px;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  box-shadow: 4px 4px 0 rgba(2, 10, 16, 0.6);
  transition: top var(--t1) var(--ease);
}

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

/* ---------- 13. 头部 ---------- */
.site-head {
  position: relative;
  z-index: 60;
  background: var(--ink);
}

.brandbar {
  background: var(--ink);
  border-bottom: 1px solid var(--rule);
}

.brandbar__in {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: var(--bar-h);
  padding-block: 8px;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  flex: 0 0 auto;
}

.brand__mark {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: var(--white);
  line-height: 1.3;
}

.brand__latin {
  display: inline-block;
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--teal);
  transform: skewX(-6deg);
}

.brandbar__motto {
  flex: 1 1 auto;
  min-width: 0;
  padding-left: 16px;
  border-left: 1px solid var(--rule);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--gray);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 8px 12px;
  border: 2px solid var(--rule-strong);
  border-radius: 2px;
  background: rgba(251, 248, 242, 0.04);
  color: var(--white);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  transition: border-color var(--t1) var(--ease), color var(--t1) var(--ease);
}

.nav-toggle__bars {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--orange);
  box-shadow: 0 6px 0 var(--orange), 0 -6px 0 var(--orange);
}

.nav-toggle__text {
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.78rem;
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--orange);
  color: var(--orange-soft);
}

.navband {
  background: var(--ink);
  border-bottom: 1px solid var(--rule);
}

.navband__in {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: var(--nav-h);
}

.mainnav {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.navlist {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}

.navlink {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 2px;
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  color: rgba(251, 248, 242, 0.82);
  transition:
    color var(--t1) var(--ease),
    background-color var(--t1) var(--ease),
    box-shadow var(--t1) var(--ease);
}

.navlink__no {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  color: var(--gray);
  transition: color var(--t1) var(--ease);
}

.navlink:hover {
  color: var(--orange-soft);
  background: rgba(255, 106, 31, 0.07);
}

.navlink:hover .navlink__no { color: var(--orange); }

.navlink[aria-current="page"] {
  color: var(--white);
  background: rgba(255, 106, 31, 0.1);
  box-shadow: inset 3px 0 0 var(--orange);
}

.navlink[aria-current="page"] .navlink__no { color: var(--orange); }

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

@media (min-width: 900px) {
  .navband {
    position: sticky;
    top: 0;
    z-index: 80;
  }
}

@media (min-width: 900px) and (max-width: 1120px) {
  .navlink {
    padding: 8px 8px;
    font-size: 0.85rem;
  }
  .nav-actions .btn {
    padding: 8px 12px;
    font-size: 0.82rem;
  }
}

/* 移动端抽屉 */
@media (max-width: 899px) {
  .brandbar__motto { display: none; }
  .nav-toggle { display: inline-flex; }

  .navband { padding-block: 0; border-bottom: 0; }

  .navband__in {
    display: block;
    min-height: 0;
    gap: 0;
    padding-inline: 0;
  }

  .mainnav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--pad) 20px;
    background: var(--ink-2);
    border-bottom: 2px solid var(--orange);
  }

  .mainnav[data-open="true"] { display: flex; }

  .navlist {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    flex-wrap: nowrap;
    padding-top: 4px;
  }

  .navlink {
    display: flex;
    width: 100%;
    padding: 13px 10px;
    border-radius: 0;
    border-bottom: 1px solid var(--rule);
    font-size: 1rem;
  }

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

  .nav-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding-top: 16px;
  }

  .nav-actions .btn { width: 100%; padding-block: 12px; }
}

/* ---------- 14. 页脚 ---------- */
.site-foot {
  background: var(--ink-2);
  border-top: 2px solid var(--orange);
  color: var(--white);
}

.foot-ruler {
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--teal) 0 1px, transparent 1px 24px);
  opacity: 0.3;
}

.foot-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-block: 48px 36px;
}

@media (min-width: 700px) {
  .foot-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px 32px;
    padding-block: 56px 40px;
  }
}

@media (min-width: 1060px) {
  .foot-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 56px;
    padding-block: 64px 48px;
  }
}

.foot-brand {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.foot-brand .brand__mark { font-size: 1.1rem; }

.foot-brand__line {
  max-width: 34ch;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(251, 248, 242, 0.72);
}

.foot-brand__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.foot-brand__meta-text { color: var(--gray); }

.foot-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

@media (max-width: 400px) {
  .foot-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.foot-col { min-width: 0; }

.foot-col__title {
  display: block;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--teal);
}

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

.foot-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: rgba(251, 248, 242, 0.78);
  transition: color var(--t1) var(--ease), transform var(--t1) var(--ease);
}

.foot-list a::before {
  content: "";
  width: 8px;
  height: 2px;
  flex: 0 0 auto;
  background: var(--orange);
  opacity: 0;
  transition: opacity var(--t1) var(--ease);
}

.foot-list a:hover {
  color: var(--orange-soft);
  transform: translateX(3px);
}

.foot-list a:hover::before { opacity: 1; }

.foot-contact { min-width: 0; }

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-list__k {
  font-family: var(--font-cond);
  font-weight: 700;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
}

.contact-list__v {
  font-size: 0.86rem;
  line-height: 1.65;
  color: rgba(251, 248, 242, 0.88);
  overflow-wrap: anywhere;
}

.contact-list__v--num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.foot-base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-block: 20px 28px;
  border-top: 1px solid var(--rule);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.foot-base__id {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.72rem;
}

.foot-base__note { color: var(--gray); }

/* ---------- 15. 滚动进度条（由脚本注入） ---------- */
.scroll-meter {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  z-index: 120;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--orange), var(--teal));
  pointer-events: none;
  transition: transform 80ms linear;
}

/* ---------- 16. 滚动显现 ---------- */
[data-reveal] { opacity: 1; transform: none; }

html.has-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t3) var(--ease), transform var(--t3) var(--ease);
}

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

/* ---------- 17. 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

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

  .btn:hover,
  .foot-list a:hover {
    transform: none;
  }
}