/* =========================================================
   悦盈赛场 · 共享样式 /assets/site.css
   夜空深蓝基底 · 荧光青数据 · 熔岩橙行动 · 切角面板
   ========================================================= */

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

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

body,
h1, h2, h3, h4, h5, p, figure, blockquote, dl, dd, address { margin: 0; }

ul, ol { margin: 0; padding: 0; }

ul[class], ol[class] { list-style: none; }

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

button { font: inherit; color: inherit; }

a { color: inherit; }

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

/* ---------- 2. tokens ---------- */
:root {
  --ink-900: #050D1A;
  --ink-800: #0B1B33;
  --ink-700: #12263F;
  --paper: #F3EBDD;
  --paper-2: #E0D5C0;
  --cyan: #33F0D0;
  --ember: #FF6A2B;
  --silver: #A8B4C2;
  --text-night: #EAF1F7;
  --text-paper: #1A2233;
  --warm-white: #FFF6E8;

  --font-display: "Barlow Condensed", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Inter", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-data: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell: 1180px;
  --gutter: clamp(18px, 4.2vw, 52px);
  --gap: clamp(16px, 2.4vw, 30px);
  --cut: 20px;
  --header-h: 74px;
  --line: rgba(168, 180, 194, 0.22);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 3. base / 中文排版 ---------- */
body {
  background-color: var(--ink-800);
  color: var(--text-night);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: 0.01em;
}

p { text-wrap: pretty; }

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

::selection { background: var(--cyan); color: var(--ink-900); }

.container {
  width: min(calc(100% - var(--gutter) * 2), var(--shell));
  margin-inline: auto;
}

.below-header { padding-top: calc(var(--header-h) + clamp(28px, 5vw, 64px)); }

.section { padding-block: clamp(40px, 7vw, 96px); }

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

.section--paper .label { color: #6B6355; }
.section--paper :focus-visible { outline-color: var(--ember); }
.section--paper .data-num { color: var(--ink-700); }

/* ---------- 4. 排版元件 ---------- */
.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 4.6vw, 56px);
  line-height: 1.02;
  letter-spacing: 0.01em;
}

.label {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver);
  line-height: 1.5;
}

.data-num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--warm-white);
}

/* ---------- 5. 面板 / 形状 ---------- */
.panel {
  position: relative;
  background-color: var(--ink-700);
  color: var(--text-night);
  border: 1px solid var(--line);
  padding: clamp(20px, 3vw, 38px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.panel--ink { background-color: var(--ink-800); }
.panel--night { background-color: var(--ink-900); border-color: rgba(168, 180, 194, 0.14); }

.panel--paper {
  background-color: var(--paper);
  color: var(--text-paper);
  border-color: var(--paper-2);
}

.panel--paper .label { color: #6B6355; }
.panel--paper .data-num { color: var(--ink-700); }
.panel--paper :focus-visible { outline-color: var(--ember); }

.diag-band {
  height: clamp(16px, 3vw, 40px);
  background-color: var(--ink-900);
  clip-path: polygon(0 100%, 100% 6%, 100% 100%, 0 100%);
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  min-height: 44px;
  padding: 11px 22px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease),
              transform 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.btn--ember {
  background-color: var(--ember);
  color: var(--ink-900);
  box-shadow: 0 0 0 0 rgba(255, 106, 43, 0.5);
}

.btn--ember:hover { background-color: #FF8451; transform: translateY(-1px); }

.btn--cyan {
  background-color: var(--cyan);
  color: var(--ink-900);
}

.btn--cyan:hover { background-color: #6CF7DF; transform: translateY(-1px); }

.btn--ghost {
  background-color: transparent;
  color: var(--text-night);
  border-color: rgba(168, 180, 194, 0.55);
}

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

/* ---------- 7. 网格 ---------- */
.grid { display: grid; gap: var(--gap); }

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr)); }

/* ---------- 8. 面包屑 ---------- */
.breadcrumb { font-family: var(--font-data); font-size: 12px; letter-spacing: 0.1em; }

.breadcrumb-list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }

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

.breadcrumb-list li + li::before {
  content: "/";
  color: var(--silver);
  opacity: 0.6;
}

.breadcrumb-link {
  color: var(--silver);
  text-decoration: none;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.breadcrumb-link:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

.breadcrumb [aria-current="page"] { color: var(--text-night); }

/* ---------- 9. 图片容器基元 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  width: 100%;
  background-color: var(--ink-700);
  background-image: linear-gradient(150deg, #12263F 0%, #0B1B33 55%, #050D1A 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.media-frame > img,
.media-frame > picture > img,
.media-frame > video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(180deg, rgba(5, 13, 26, 0) 45%, rgba(5, 13, 26, 0.74) 100%);
  pointer-events: none;
}

.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

.media-frame--data::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    repeating-linear-gradient(to right, rgba(51, 240, 208, 0.16) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(to bottom, rgba(51, 240, 208, 0.16) 0 1px, transparent 1px 44px);
  pointer-events: none;
}

/* ---------- 10. 头部 ---------- */
.skip-link {
  position: absolute;
  top: -120px;
  left: var(--gutter);
  z-index: 130;
  padding: 10px 18px;
  background-color: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 2px;
  transition: top 0.2s var(--ease);
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  background-image: linear-gradient(180deg, rgba(5, 13, 26, 0.78) 0%, rgba(5, 13, 26, 0) 100%);
  color: var(--text-night);
  transition: background-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.site-header[data-scrolled="true"] {
  background-image: none;
  background-color: rgba(18, 38, 63, 0.97);
  box-shadow: 0 1px 0 var(--line), 0 24px 48px -38px #000;
}

.header-shell {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  min-height: var(--header-h);
  transition: min-height 0.3s var(--ease);
}

.site-header[data-scrolled="true"] .header-shell { min-height: 60px; }

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

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background-color: var(--cyan);
  color: var(--ink-900);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
  transition: background-color 0.24s var(--ease);
}

.brand:hover .brand-mark { background-color: var(--ember); }

.brand-text { display: grid; gap: 1px; }

.brand-name {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
}

.brand-tag {
  font-family: var(--font-data);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--silver);
  line-height: 1.3;
  white-space: nowrap;
}

/* 移动按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  min-height: 44px;
  min-width: 44px;
  padding: 8px 12px;
  background-color: rgba(11, 27, 51, 0.55);
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--text-night);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.18em;
  cursor: pointer;
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease);
}

.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }

.nav-toggle-bars { display: inline-flex; flex-direction: column; gap: 4px; }

.nav-toggle-bars span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: currentColor;
  transition: transform 0.24s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) { transform: translateY(6px) 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(-6px) rotate(-45deg); }

/* 导航 */
.site-nav {
  margin-left: auto;
  position: relative;
  z-index: 4;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: clamp(6px, 1.4vw, 20px);
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 4px 2px;
  font-size: 15px;
  letter-spacing: 0.02em;
  color: rgba(234, 241, 247, 0.82);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8px;
  height: 2px;
  background-color: var(--cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.24s var(--ease);
}

.nav-link:hover { color: var(--cyan); }
.nav-link:hover::after { transform: scaleX(1); }

.nav-link[aria-current="page"] { color: var(--cyan); }
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  background-color: var(--ember);
}

.nav-cta-item { display: inline-flex; }

.nav-cta { margin-left: clamp(4px, 1vw, 12px); }

.nav-city {
  display: none;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--silver);
}

.nav-city-dot {
  width: 7px;
  height: 7px;
  background-color: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(51, 240, 208, 0.16);
}

.nav-scrim { display: none; }

/* 阅读进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background-image: linear-gradient(90deg, var(--cyan), var(--ember));
  opacity: 0;
  transition: opacity 0.3s var(--ease);
  pointer-events: none;
}

.site-header[data-scrolled="true"] .scroll-progress { opacity: 1; }

/* ---------- 11. 页脚 ---------- */
.site-footer {
  --footer-slant: var(--ink-800);
  position: relative;
  background-color: var(--ink-900);
  color: var(--text-night);
  padding-top: 0;
  overflow: hidden;
}

.footer-slant {
  height: clamp(26px, 5vw, 62px);
  background-color: var(--footer-slant);
  clip-path: polygon(0 100%, 100% 34%, 100% 0, 0 0);
}

.footer-shell { padding-top: clamp(36px, 6vw, 72px); }

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.35fr 1fr;
  gap: clamp(24px, 4vw, 48px);
}

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

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 27px;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1;
  color: var(--warm-white);
}

.footer-sign {
  margin-top: 12px;
  max-width: 22ch;
  font-size: 16px;
  line-height: 1.6;
  color: rgba(234, 241, 247, 0.82);
}

.footer-meta { margin-top: 18px; }

.footer-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
}

.footer-title::before {
  content: "";
  width: 14px;
  height: 2px;
  background-color: var(--cyan);
  flex: 0 0 auto;
}

.footer-list { display: grid; gap: 2px; }

.footer-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: 15px;
  color: rgba(234, 241, 247, 0.8);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.footer-link:hover {
  color: var(--cyan);
  border-bottom-color: rgba(51, 240, 208, 0.5);
  padding-left: 4px;
}

.footer-address {
  font-style: normal;
  display: grid;
  gap: 12px;
}

.footer-item { display: grid; gap: 2px; }

.footer-item-key {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--silver);
  text-transform: uppercase;
}

.footer-item-val {
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-night);
  overflow-wrap: anywhere;
}

.footer-note {
  margin-top: 16px;
  max-width: 32ch;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(168, 180, 194, 0.92);
}

.footer-bottom {
  margin-top: clamp(32px, 5vw, 58px);
  border-top: 1px solid rgba(168, 180, 194, 0.16);
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 18px;
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--silver);
}

.footer-legal { display: inline-block; }

/* ---------- 12. 显现动效 ---------- */
html.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

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

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr; row-gap: clamp(28px, 5vw, 44px); }
}

@media (max-width: 900px) {
  :root { --header-h: 66px; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 4;
    width: min(86vw, 340px);
    margin-left: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: calc(var(--header-h) + 20px) 22px 30px;
    background-color: var(--ink-700);
    border-left: 1px solid var(--line);
    box-shadow: -40px 0 70px -50px #000;
    transform: translateX(103%);
    transition: transform 0.3s var(--ease);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav[data-open="true"] { transform: translateX(0); }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
    min-height: 52px;
    font-size: 17px;
    border-bottom: 1px solid var(--line);
    padding-inline: 0;
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] {
    color: var(--cyan);
    box-shadow: inset 3px 0 0 var(--ember);
    padding-left: 12px;
  }

  .nav-cta-item { display: block; }

  .nav-cta {
    width: 100%;
    margin: 18px 0 0;
  }

  .nav-city { display: flex; }

  .nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 2;
    background-color: rgba(5, 13, 26, 0.66);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.28s var(--ease);
  }

  .site-header[data-nav-open="true"] .nav-scrim {
    opacity: 1;
    pointer-events: auto;
  }

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

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }

  .brand-tag { display: none; }
  .brand-name { font-size: 19px; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-sign { max-width: none; }
  .footer-bottom-inner { justify-content: flex-start; }
}

/* ---------- 14. 减少动效 ---------- */
@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;
  }

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