/* ==========================================================
   幻影体育HYTY · 全站共享样式 /assets/site.css
   设计语言：暗黑全息 + 幻影紫/电竞蓝/荧光绿 + 切角几何
   ========================================================== */

/* -- 变量 -- */
:root {
  --void: #08080C;
  --panel: #0F1018;
  --elevated: #161823;
  --phantom: #8A2BE2;
  --esports: #00B4D8;
  --neon: #39FF14;
  --text-primary: #F5F6FA;
  --text-secondary: #B0B7C3;
  --text-muted: #6C7480;
  --divider: #222433;
  --warning: #FFB800;
  --error: #FF4D4F;

  --font-head: "Impact", "Arial Black", "DIN Alternate", "Noto Sans SC", sans-serif;
  --font-body: "Roboto", "Noto Sans SC", "Microsoft YaHei", sans-serif;

  --container: 1280px;
  --header-h: 72px;
  --transition: 0.25s ease;
  --font-h1: clamp(2.2rem, 5vw, 3.5rem);
  --font-h2: clamp(1.8rem, 3.5vw, 2.5rem);
  --font-h3: clamp(1.4rem, 2.5vw, 1.8rem);
}

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

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

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--void);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: 0.01em;
}

p {
  margin: 0;
}

ul[class],
ol[class] {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

a {
  color: var(--esports);
  text-decoration: none;
}

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

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

main {
  display: block;
}

::selection {
  background: var(--phantom);
  color: var(--text-primary);
}

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

#main-content {
  scroll-margin-top: calc(var(--header-h) + 12px);
}

/* -- 容器 -- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section {
  padding: 3rem 0;
}

/* -- 跳转链接 -- */
.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 3000;
  display: inline-block;
  padding: 0.6rem 1rem;
  background: var(--esports);
  color: #050508;
  font-weight: 700;
  font-size: 0.9rem;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
}

/* -- 滚动进度 -- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 2500;
  pointer-events: none;
  background: transparent;
}

.scroll-progress span {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--phantom), var(--esports), var(--neon));
  will-change: width;
}

/* -- 顶部公告 -- */
.site-announcement {
  background: linear-gradient(90deg, #0a0d16 0%, #131026 50%, #0a0d16 100%);
  border-bottom: 1px solid var(--divider);
  color: var(--text-secondary);
  font-size: 0.85rem;
  padding: 0.45rem 1rem;
  text-align: center;
}

.site-announcement p {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0;
}

.site-announcement__dot {
  width: 8px;
  height: 8px;
  background: var(--neon);
  box-shadow: 0 0 10px var(--neon);
  animation: hyty-pulse 1.6s ease-in-out infinite;
}

@keyframes hyty-pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

/* -- 头部 -- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 2000;
  background: rgba(8, 8, 12, 0.9);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--divider);
}

.site-header__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* -- 品牌 -- */
.site-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  font-family: var(--font-head);
  line-height: 1;
}

.site-brand__cn {
  font-size: 1.65rem;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.site-brand__en {
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  background: linear-gradient(90deg, var(--phantom), var(--esports));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.site-brand--footer .site-brand__cn {
  font-size: 1.4rem;
}

.site-brand--footer .site-brand__en {
  font-size: 0.95rem;
}

/* -- 主导航 -- */
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav__link {
  display: inline-block;
  padding: 0.55rem 0.9rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  transition: color var(--transition);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0.9rem;
  right: 0.9rem;
  bottom: 0.35rem;
  height: 2px;
  background: linear-gradient(90deg, var(--phantom), var(--esports));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.site-nav__link:hover {
  color: var(--text-primary);
}

.site-nav__link:hover::after {
  transform: scaleX(1);
}

.site-nav__link[aria-current="page"] {
  color: var(--text-primary);
  background: linear-gradient(90deg, rgba(138, 43, 226, 0.2), rgba(0, 180, 216, 0.12));
}

.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

/* -- 移动端导航按钮 -- */
.site-nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--divider);
  background: var(--panel);
  flex-shrink: 0;
}

.site-nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.site-nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.site-nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* -- 返回顶部 -- */
.back-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 1500;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--panel);
  border: 1px solid var(--esports);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition), border-color var(--transition);
}

.back-top::before {
  content: "";
  width: 10px;
  height: 10px;
  border-left: 2px solid currentColor;
  border-top: 2px solid currentColor;
  transform: rotate(45deg) translate(2px, -1px);
  color: var(--esports);
}

.back-top:hover {
  border-color: var(--neon);
}

.back-top:hover::before {
  color: var(--neon);
}

.back-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* -- 页脚 -- */
.site-footer {
  background: #050508;
  border-top: 1px solid var(--divider);
  color: var(--text-secondary);
  margin-top: 5rem;
}

.site-footer__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 3.5rem 1.5rem 2.25rem;
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.3fr);
  gap: 2.5rem;
}

.site-footer__brand .site-brand {
  margin-bottom: 1rem;
}

.site-footer__about {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 38ch;
}

.site-footer__trust {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--divider);
  font-size: 0.85rem;
  color: var(--text-muted);
  max-width: 52ch;
}

.site-footer__block h2 {
  font-family: var(--font-head);
  font-size: 1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding-left: 0.7rem;
  border-left: 3px solid var(--phantom);
}

.site-footer__block ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer__block li {
  margin-bottom: 0.55rem;
  font-size: 0.92rem;
}

.site-footer__block a {
  color: var(--text-secondary);
  transition: color var(--transition);
}

.site-footer__block a:hover {
  color: var(--neon);
}

.site-footer__contact-list {
  font-variant-numeric: tabular-nums;
}

.site-footer__contact-list li {
  color: var(--text-muted);
}

.site-footer__bottom {
  border-top: 1px solid var(--divider);
  padding: 1.1rem 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.site-footer__bottom p {
  margin: 0;
}

/* -- 章节头部 -- */
.section-head {
  margin-bottom: 1.75rem;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.6rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--esports);
}

.section-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, var(--phantom), var(--esports));
}

.section-title {
  font-family: var(--font-head);
  font-size: var(--font-h2);
  line-height: 1.12;
  margin-bottom: 0.5rem;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 56ch;
  font-size: 0.98rem;
}

/* -- 按钮 -- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  font-family: var(--font-head);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-primary);
  background: var(--panel);
  border: 1px solid var(--phantom);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: background-color var(--transition), border-color var(--transition), color var(--transition), filter var(--transition);
}

.btn--primary {
  background: linear-gradient(135deg, var(--phantom), var(--esports));
  border: 0;
  color: #08080C;
  font-weight: 700;
}

.btn--primary:hover {
  filter: brightness(1.15);
  color: #08080C;
}

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

.btn--ghost:hover {
  background: rgba(0, 180, 216, 0.12);
  color: var(--neon);
  border-color: var(--neon);
}

/* -- 面包屑 -- */
.breadcrumb {
  padding: 1.25rem 0 0.75rem;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.breadcrumb__item a {
  color: var(--text-secondary);
  transition: color var(--transition);
}

.breadcrumb__item a:hover {
  color: var(--esports);
}

.breadcrumb__sep {
  opacity: 0.55;
}

.breadcrumb__item[aria-current="page"] {
  color: var(--text-primary);
  font-weight: 600;
}

/* -- 栅格 -- */
.grid {
  display: grid;
  gap: 1.25rem;
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

/* -- 卡片 -- */
.card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--divider);
  padding: 1.5rem;
  transition: border-color var(--transition), transform var(--transition);
}

.card:hover {
  border-color: rgba(138, 43, 226, 0.6);
  transform: translateY(-2px);
}

.card--accent {
  background: linear-gradient(var(--panel), var(--panel)) padding-box,
    linear-gradient(135deg, var(--phantom), var(--esports)) border-box;
  border: 1px solid transparent;
}

.card__title {
  font-family: var(--font-head);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card__text {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* -- 标签 -- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--esports);
  border: 1px solid rgba(0, 180, 216, 0.5);
  background: rgba(0, 180, 216, 0.08);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.tag--purple {
  color: var(--phantom);
  border-color: rgba(138, 43, 226, 0.5);
  background: rgba(138, 43, 226, 0.1);
}

.tag--neon {
  color: var(--neon);
  border-color: rgba(57, 255, 20, 0.4);
  background: rgba(57, 255, 20, 0.06);
}

/* -- 全息面板 -- */
.hud-panel {
  position: relative;
  padding: 1.5rem;
  background:
    linear-gradient(rgba(0, 180, 216, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 180, 216, 0.035) 1px, transparent 1px),
    var(--panel);
  background-size: 22px 22px;
  border: 1px solid var(--divider);
  border-left: 3px solid var(--phantom);
}

.hud-panel::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 34px;
  height: 34px;
  border-top: 2px solid var(--esports);
  border-right: 2px solid var(--esports);
  opacity: 0.6;
}

/* -- 键值数据 -- */
.data-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.data-list__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px dashed var(--divider);
}

.data-list__row:last-child {
  border-bottom: 0;
}

.data-list__label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.data-list__value {
  font-size: 0.95rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
  text-align: right;
}

/* -- 数字指标 -- */
.stat {
  padding: 1.1rem 1.25rem;
  background: var(--panel);
  border-left: 3px solid var(--esports);
}

.stat__value {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

.stat__value--neon {
  color: var(--neon);
}

.stat__label {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* -- 图片容器 -- */
.img-frame {
  position: relative;
  overflow: hidden;
  background: var(--elevated);
  border: 1px solid var(--divider);
}

.img-frame::before {
  content: "";
  display: block;
  padding-top: 56.25%;
}

.img-frame--tall::before {
  padding-top: 75%;
}

.img-frame--wide::before {
  padding-top: 42%;
}

.img-frame--square::before {
  padding-top: 100%;
}

.img-frame > * {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.img-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(138, 43, 226, 0.08), transparent 30%, transparent 70%, rgba(0, 180, 216, 0.08)),
    repeating-linear-gradient(180deg, transparent 0 3px, rgba(245, 246, 250, 0.02) 3px 4px);
}

/* -- 平板与桌面适配 -- */
@media (max-width: 1080px) and (min-width: 769px) {
  .site-nav__link {
    padding: 0.55rem 0.6rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 980px) {
  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 900px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* -- 移动端适配 -- */
@media (max-width: 768px) {
  :root {
    --header-h: 62px;
  }

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--panel);
    border-bottom: 1px solid var(--divider);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
    opacity: 0;
    transform: translateY(-10px);
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem;
  }

  .site-nav__link {
    display: block;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--divider);
  }

  .site-nav__link:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 560px) {
  .site-brand__cn {
    font-size: 1.35rem;
  }

  .site-brand__en {
    font-size: 0.85rem;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: minmax(0, 1fr);
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .back-top {
    right: 1rem;
    bottom: 1rem;
  }
}

/* -- 动效降级 -- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .card:hover {
    transform: none;
  }
}