/* ==========================================================================
   德赢体育主站 · 中文专区 — 共享样式 /assets/site.css
   夜场球场灯光 × 数据面板：深底、粗边框、等宽索引、斜向光带
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  background-color: #061A2E;
}

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

/* ---------- 2. 变量 ---------- */
:root {
  --ink: #061A2E;
  --panel: #0B2A45;
  --scale: #123A5A;
  --cyan: #00E0D0;
  --green: #39FF6A;
  --orange: #FF8A3D;
  --white: #EAF6FF;
  --mute: #9FB8CC;
  --warn: #FFD166;

  --grad-jump: linear-gradient(115deg, #00E0D0 0%, #123A5A 58%, #061A2E 100%);

  --sans: "Helvetica Neue", "Arial Narrow", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo,
          Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --gutter: clamp(1rem, 4vw, 3.25rem);
  --gap: clamp(0.9rem, 2.2vw, 1.75rem);
  --bw: 2px;
  --content: 68ch;
  --max: 1320px;
}

/* ---------- 3. 基础排版与底色 ---------- */
body {
  background: transparent;
  color: var(--white);
  font-family: var(--sans);
  font-size: clamp(16px, 0.5vw + 15px, 17px);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  min-height: 100vh;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

/* 夜间球场：主光从右上打下来，暖橙在左下留一点余温 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(120% 70% at 88% -12%, rgba(0, 224, 208, 0.16), transparent 62%),
    radial-gradient(90% 60% at -10% 110%, rgba(255, 138, 61, 0.10), transparent 60%),
    radial-gradient(65% 55% at 50% 0%, rgba(18, 58, 90, 0.55), transparent 72%);
}

/* 3.5 度斜向基线：极淡的光带，构成非对称网格的底纹 */
body::after {
  content: "";
  position: fixed;
  inset: -10%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.45;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(0, 224, 208, 0.05) 0 2px,
    transparent 2px 190px
  );
  transform: rotate(3.5deg);
}

p { max-width: var(--content); }

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.015em;
}

a {
  color: var(--cyan);
  text-decoration: none;
  text-underline-offset: 0.22em;
}

a:hover { color: var(--green); }

strong { font-weight: 700; }

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

/* ---------- 4. 无障碍 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -200px;
  z-index: 90;
  padding: 0.6rem 1rem;
  background: var(--cyan);
  color: #04202B;
  border: var(--bw) solid var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  transition: top 0.2s var(--ease);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 0.75rem;
  color: #04202B;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 60;
  pointer-events: none;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--green) 60%, var(--orange) 100%);
  transform: scaleX(var(--progress, 0));
  transform-origin: 0 50%;
}

/* ---------- 5. 页头 · 刊头 ---------- */
.site-header {
  position: relative;
  z-index: 40;
}

.masthead {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: clamp(1.8rem, 5vw, 3.4rem) var(--gutter) clamp(1.3rem, 3.2vw, 2.2rem);
  background: linear-gradient(180deg, rgba(11, 42, 69, 0.95) 0%, rgba(6, 26, 46, 0.95) 100%);
  border-bottom: var(--bw) solid var(--scale);
}

/* 首屏右侧切角：渐变跃迁带，不铺满整屏 */
.masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: var(--grad-jump);
  opacity: 0.55;
  clip-path: polygon(0 0, 62% 0, 40% 100%, 0 100%);
}

/* 看台顶灯：右下一团荧光绿余晖 */
.masthead::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -70%;
  width: min(52vw, 620px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(57, 255, 106, 0.16) 0%, transparent 65%);
}

.masthead__kicker {
  position: relative;
  margin-bottom: clamp(0.6rem, 1.6vw, 1rem);
  font-family: var(--mono);
  font-size: clamp(0.66rem, 0.9vw, 0.78rem);
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--cyan);
}

.masthead__brand {
  position: relative;
  display: block;
  font-family: var(--sans);
  font-size: clamp(2.2rem, 8.4vw, 6rem);
  font-weight: 900;
  font-stretch: condensed;
  line-height: 0.94;
  letter-spacing: -0.02em;
  color: var(--white);
  text-shadow: 5px 5px 0 rgba(0, 224, 208, 0.2), 11px 11px 0 rgba(18, 58, 90, 0.75);
  transition: text-shadow 0.24s var(--ease);
}

.masthead__brand:hover,
.masthead__brand:focus-visible {
  color: var(--white);
  text-shadow: 5px 5px 0 rgba(57, 255, 106, 0.35), 11px 11px 0 rgba(18, 58, 90, 0.9);
}

.masthead__signature {
  position: relative;
  margin-top: clamp(0.7rem, 2vw, 1.1rem);
  max-width: none;
  font-family: var(--mono);
  font-size: clamp(0.66rem, 0.9vw, 0.75rem);
  letter-spacing: 0.18em;
  color: var(--mute);
}

/* ---------- 6. 页头 · 索引条 ---------- */
.indexbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas: "note nav cta";
  align-items: center;
  gap: 0.6rem 1.25rem;
  padding: 0.5rem var(--gutter);
  background: rgba(11, 42, 69, 0.96);
  border-bottom: var(--bw) solid var(--scale);
  box-shadow: 0 8px 0 -4px rgba(0, 224, 208, 0.2);
}

.indexbar__note {
  grid-area: note;
  max-width: 24ch;
  font-family: var(--mono);
  font-size: 0.67rem;
  line-height: 1.5;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.nav { grid-area: nav; }

.nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.2rem clamp(0.35rem, 1.4vw, 1.15rem);
}

.nav__link {
  position: relative;
  display: block;
  padding: 0.45rem 0.2rem;
  font-family: var(--mono);
  font-size: clamp(0.72rem, 0.95vw, 0.81rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--mute);
  white-space: nowrap;
  border-bottom: var(--bw) solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--cyan);
}

.nav__link[aria-current="page"] {
  color: var(--green);
  border-bottom-color: var(--green);
}

.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0.2rem;
  right: 0.2rem;
  bottom: -0.5rem;
  height: 2px;
  background: var(--green);
}

/* 移动导航按钮 */
.nav-toggle {
  grid-area: toggle;
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 0.85rem;
  background: var(--panel);
  color: var(--white);
  border: var(--bw) solid var(--scale);
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

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

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 18px;
  height: 10px;
  border-top: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
}

.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  margin-top: -1px;
  background: var(--green);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  opacity: 0;
  transform: scaleX(0.4);
}

/* ---------- 7. 通用按钮 ---------- */
.cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.6rem 1.05rem;
  background: transparent;
  color: var(--white);
  border: var(--bw) solid var(--cyan);
  font-family: var(--mono);
  font-size: clamp(0.72rem, 0.95vw, 0.81rem);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-align: center;
  cursor: pointer;
  box-shadow: 4px 4px 0 0 rgba(18, 58, 90, 0.9);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease),
              background-color 0.2s var(--ease), color 0.2s var(--ease),
              border-color 0.2s var(--ease);
}

/* hover 时视觉边框 2px → 4px */
.cta::after {
  content: "";
  position: absolute;
  inset: calc(-1 * var(--bw));
  border: var(--bw) solid transparent;
  pointer-events: none;
  transition: border-color 0.2s var(--ease);
}

.cta:hover,
.cta:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 0 rgba(0, 224, 208, 0.25);
}

.cta:hover::after,
.cta:focus-visible::after {
  border-color: var(--cyan);
}

.cta--solid {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04202B;
  box-shadow: 4px 4px 0 0 rgba(0, 224, 208, 0.28);
}

.cta--solid:hover,
.cta--solid:focus-visible {
  background: var(--green);
  border-color: var(--green);
  color: #04202B;
  box-shadow: 6px 6px 0 0 rgba(57, 255, 106, 0.28);
}

.cta--header {
  grid-area: cta;
  justify-self: end;
}

/* ---------- 8. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: var(--panel);
  border-top: var(--bw) solid var(--scale);
}

.site-footer::before {
  content: "";
  display: block;
  height: 4px;
  background: var(--grad-jump);
}

.footer__inner {
  display: grid;
  grid-template-columns: minmax(180px, 0.9fr) 2fr;
  gap: clamp(1.6rem, 4vw, 3.2rem);
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding: clamp(2rem, 5vw, 3.4rem) var(--gutter) clamp(1.4rem, 3vw, 2.2rem);
}

.footer__brand-name {
  font-family: var(--sans);
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
  text-shadow: 3px 3px 0 rgba(0, 224, 208, 0.22);
}

.footer__brand-line {
  margin-top: 0.5rem;
  max-width: none;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--mute);
}

.footer__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.6vw, 2rem);
}

.footer__col-title {
  margin-bottom: 0.8rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--scale);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.footer__links {
  display: grid;
  gap: 0.45rem;
}

.footer__link {
  position: relative;
  display: inline-block;
  padding-left: 0;
  font-size: 0.92rem;
  color: var(--mute);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.footer__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 2px;
  background: var(--cyan);
  transform: translateY(-50%);
  transition: width 0.2s var(--ease);
}

.footer__link:hover,
.footer__link:focus-visible {
  padding-left: 0.9rem;
  color: var(--white);
}

.footer__link:hover::before,
.footer__link:focus-visible::before {
  width: 0.55rem;
}

.footer__meta {
  grid-column: 1 / -1;
  display: grid;
  gap: 0.3rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--scale);
  font-family: var(--mono);
  font-size: 0.71rem;
  line-height: 1.8;
  letter-spacing: 0.04em;
  color: var(--mute);
}

.footer__contact,
.footer__hours,
.footer__icp,
.footer__legal { max-width: none; }

.footer__icp { color: var(--cyan); }

/* ---------- 9. 布局骨架 ---------- */
.wrap,
.shell {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}

.rail { grid-column: 1 / span 3; }
.main { grid-column: 4 / -1; }

/* ---------- 10. 章节 ---------- */
.section {
  padding-block: clamp(2rem, 5vw, 3.8rem);
}

.section + .section {
  border-top: 1px solid var(--scale);
}

.section__num {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--mono);
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--scale);
}

@supports not (-webkit-text-stroke: 1px currentColor) {
  .section__num { color: var(--scale); }
}

.section__eyebrow {
  display: block;
  margin-bottom: 0.4rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--cyan);
}

.section__title {
  margin-bottom: 0.8rem;
  font-size: clamp(1.45rem, 3.4vw, 2.5rem);
  font-weight: 800;
}

.section__lead {
  max-width: var(--content);
  color: var(--mute);
}

/* ---------- 11. 组件 ---------- */
.card {
  position: relative;
  padding: clamp(1rem, 2.4vw, 1.6rem);
  background: var(--panel);
  border: var(--bw) solid var(--scale);
  box-shadow: 8px 8px 0 rgba(18, 58, 90, 0.5);
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease),
              box-shadow 0.22s var(--ease);
}

.card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--cyan);
  pointer-events: none;
  transition: width 0.22s var(--ease);
}

.card:hover,
.card:focus-within {
  border-color: var(--cyan);
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 rgba(0, 224, 208, 0.22);
}

.card:hover::after,
.card:focus-within::after {
  width: 4px;
}

.figure {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: var(--bw) solid var(--scale);
  box-shadow: 10px 10px 0 rgba(18, 58, 90, 0.45);
}

.figure__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--grad-jump);
}

.figure__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    115deg,
    rgba(234, 246, 255, 0.05) 0 2px,
    transparent 2px 22px
  );
}

.figure__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.96) contrast(1.06) brightness(0.92);
}

.figure__caption {
  padding: 0.7rem 0.95rem;
  border-top: var(--bw) solid var(--scale);
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1.6;
  letter-spacing: 0.08em;
  color: var(--mute);
}

.figure--wide .figure__media { aspect-ratio: 21 / 9; }
.figure--portrait .figure__media { aspect-ratio: 4 / 5; }
.figure--square .figure__media { aspect-ratio: 1 / 1; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.16rem 0.55rem;
  border: 1px solid currentColor;
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.tag--transfer { color: var(--orange); }
.tag--rank { color: var(--green); }
.tag--note { color: var(--warn); }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--cyan);
}

.num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: 0.01em;
}

.stat {
  display: inline-block;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--green);
}

.muted { color: var(--mute); }

.rule {
  height: 1px;
  border: 0;
  margin-block: clamp(1.4rem, 3vw, 2.4rem);
  background: var(--scale);
}

.breadcrumb {
  padding-block: 0.9rem;
  border-bottom: 1px solid var(--scale);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--mute);
}

.breadcrumb__list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.breadcrumb__link { color: var(--mute); }
.breadcrumb__link:hover { color: var(--cyan); }

/* ---------- 12. 滚动显现 ---------- */
[data-reveal] {
  opacity: 1;
  transform: none;
}

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px) scale(0.99);
  transition: opacity 0.34s var(--ease), transform 0.34s var(--ease);
  will-change: opacity, transform;
}

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

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1120px) {
  .indexbar__note { max-width: 18ch; font-size: 0.64rem; }
}

@media (max-width: 1040px) {
  .rail,
  .main { grid-column: 1 / -1; }

  .grid { gap: clamp(0.9rem, 3vw, 1.6rem); }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 4.5rem; }

  .indexbar {
    grid-template-columns: auto 1fr;
    grid-template-areas:
      "toggle cta"
      "nav nav"
      "note note";
    gap: 0.5rem 1rem;
    padding: 0.55rem var(--gutter);
  }

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

  .nav {
    display: none;
  }

  .nav[data-open] {
    display: block;
    animation: navDrop 0.26s var(--ease) both;
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.3rem 0 0.5rem;
  }

  .nav__link {
    padding: 0.72rem 0.2rem;
    font-size: 0.86rem;
    border-bottom: 1px solid var(--scale);
  }

  .nav__link[aria-current="page"] {
    border-bottom-color: var(--green);
  }

  .nav__link[aria-current="page"]::after { display: none; }

  .indexbar__note { max-width: none; }

  .cta--header { padding: 0.5rem 0.85rem; }
}

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

@media (max-width: 780px) {
  .footer__inner { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .footer__cols { grid-template-columns: 1fr; }
  .footer__meta { font-size: 0.68rem; }
  .masthead__brand { text-shadow: 3px 3px 0 rgba(0, 224, 208, 0.22); }
}

/* ---------- 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;
  }

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

  .scroll-progress { display: none; }
}