/* ==========================================================
   百博运动 · 全站共享样式 site.css
   数据指挥舱 · 深蓝终端 · 橙色信号
   ========================================================== */

/* ---------- 1. 设计变量 ---------- */
:root {
  --color-primary: #0A1F44;
  --color-primary-light: #1E3A5F;
  --color-accent: #FF6B00;
  --color-accent-light: #FF8B33;
  --color-warning: #FFD166;
  --color-bg-light: #F5F7FA;
  --color-grid: #4A6A8F;
  --color-text-dark: #16283A;
  --color-text-subtle: #6B7A8F;
  --color-text-on-dark: #D9E2EC;
  --color-border-light: #E1E8F0;
  --color-white: #FFFFFF;
  --font-display: "Oswald", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --container-width: 1200px;
  --header-height: 72px;
  --radius-sm: 2px;
  --radius-md: 4px;
  --shadow-card: 0 8px 24px rgba(10, 31, 68, 0.08);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

input,
textarea,
select {
  font-family: inherit;
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text-dark);
  background: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1rem; }

p {
  margin: 0 0 16px;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease;
}

a:hover {
  color: var(--color-accent-light);
}

/* ---------- 4. 布局基础 ---------- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.site-main {
  min-height: 70vh;
  background: var(--color-bg-light);
  padding-bottom: 64px;
}

/* ---------- 5. 头部命令栏 ---------- */
.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 9999;
  padding: 12px 24px;
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 0;
  outline: 2px solid var(--color-white);
  outline-offset: -2px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background:
    repeating-linear-gradient(
      135deg,
      transparent,
      transparent 32px,
      rgba(255, 107, 0, 0.03) 32px,
      rgba(255, 107, 0, 0.03) 33px
    ),
    var(--color-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header::after {
  content: "";
  display: block;
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--color-accent) 0%,
    var(--color-accent) calc(100% - 100px),
    var(--color-primary-light) calc(100% - 100px),
    var(--color-primary-light) 100%
  );
}

.site-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 10;
  pointer-events: none;
  overflow: hidden;
}

.site-progress__bar {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
}

.site-header__inner {
  display: flex;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  min-height: var(--header-height);
  padding: 12px 24px;
}

/* 品牌标识 */
.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.site-header__brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 18px 6px 10px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 1.12rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 100%, 0 100%);
}

.site-header__brand-name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1;
  color: var(--color-white);
}

/* 语言指示器 */
.site-header__lang {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-left: 30px;
  padding-left: 18px;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-text-on-dark);
  flex-shrink: 0;
  cursor: default;
}

.site-header__lang-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 0.68rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
}

.site-header__lang-text {
  white-space: nowrap;
}

/* 导航 */
.site-nav {
  display: flex;
  align-items: center;
  margin-left: auto;
}

.site-nav__list {
  display: flex;
  align-items: center;
}

.site-nav__item {
  flex-shrink: 0;
}

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 12px;
  color: var(--color-text-on-dark);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 8px;
  right: 8px;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

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

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

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

/* 登录按钮 */
.site-nav__login {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-left: 28px;
  padding: 9px 24px 9px 22px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
}

.site-nav__login::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  clip-path: polygon(100% 0, 0 0, 0 100%);
}

.site-nav__login:hover {
  background: var(--color-accent-light);
  color: var(--color-white);
  transform: translateY(-1px);
}

.site-nav__login-icon {
  font-size: 0.82rem;
  line-height: 1;
}

/* 移动端导航按钮 */
.site-nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-sm);
  margin-left: auto;
  flex-shrink: 0;
}

.site-nav-toggle__bar {
  position: absolute;
  left: 10px;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.site-nav-toggle__bar:nth-child(1) { top: 14px; }
.site-nav-toggle__bar:nth-child(2) { top: 21px; }
.site-nav-toggle__bar:nth-child(3) { top: 28px; }

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

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

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

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

/* ---------- 6. 页脚 ---------- */
.site-footer {
  background:
    linear-gradient(rgba(74, 106, 143, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 106, 143, 0.06) 1px, transparent 1px),
    var(--color-primary);
  background-size: 28px 28px;
  color: var(--color-text-on-dark);
}

.site-footer::before {
  content: "";
  display: block;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--color-primary-light) 0%,
    var(--color-primary-light) 100px,
    var(--color-accent) 100px,
    var(--color-accent) 100%
  );
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 48px;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px 40px;
}

.site-footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.site-footer__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 14px 5px 8px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1;
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 100%, 0 100%);
}

.site-footer__logo-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--color-white);
  line-height: 1;
}

.site-footer__slogan {
  margin: 0 0 16px;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  color: rgba(255, 139, 51, 0.85);
}

.site-footer__trust {
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(217, 226, 236, 0.7);
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer__heading {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-accent);
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 107, 0, 0.25);
}

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-footer__item {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-on-dark);
  word-break: break-all;
}

.site-footer__item a {
  color: var(--color-text-on-dark);
  padding: 2px 0;
  display: inline-block;
}

.site-footer__item a:hover {
  color: var(--color-accent-light);
}

.site-footer__item--label {
  color: var(--color-accent);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-top: 6px;
}

.site-footer__item--note {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.84rem;
  color: rgba(217, 226, 236, 0.65);
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 24px;
  font-size: 0.82rem;
  color: rgba(217, 226, 236, 0.65);
}

.site-footer__copyright,
.site-footer__icp {
  margin: 0;
}

/* ---------- 7. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-accent-light);
  color: var(--color-white);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-grid);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(255, 107, 0, 0.05);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin: 0 10px;
  color: var(--color-grid);
}

.breadcrumb__link {
  color: var(--color-grid);
}

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

.breadcrumb__current {
  color: var(--color-text-dark);
  font-weight: 600;
}

/* ---------- 9. 页面结构组件 ---------- */
.page-heading {
  padding: 48px 0 24px;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 32px;
}

.page-heading__title {
  margin-bottom: 8px;
}

.page-heading__subtitle {
  font-size: 1rem;
  color: var(--color-text-subtle);
  margin: 0;
}

.page-section {
  padding: 56px 0;
}

.page-section--dark {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
}

.page-section--dark h1,
.page-section--dark h2,
.page-section--dark h3 {
  color: var(--color-white);
}

/* ---------- 10. 标签与导语 ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.section-label::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 3px;
  background: var(--color-accent);
  clip-path: polygon(0 0, 100% 0, 82% 100%, 0 100%);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 13px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-bg-light);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
}

.tag--accent {
  color: var(--color-white);
  background: var(--color-accent);
  border-color: var(--color-accent);
}

/* ---------- 11. 卡片与数据面板 ---------- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.data-panel {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-left: 4px solid var(--color-accent);
  padding: 24px;
  border-radius: var(--radius-sm);
}

.data-panel__label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-grid);
  margin-bottom: 8px;
}

.data-panel__value {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

/* ---------- 12. 图片与可视化容器 ---------- */
.visual-panel {
  position: relative;
  overflow: hidden;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
}

.visual-panel::before {
  content: "";
  display: block;
  padding-top: 56.25%;
}

.visual-panel--square::before {
  padding-top: 100%;
}

.visual-panel--tense::before {
  padding-top: 75%;
}

.visual-panel__img,
.visual-panel__placeholder {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.visual-panel__img {
  object-fit: cover;
}

.visual-panel__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(rgba(74, 106, 143, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 106, 143, 0.12) 1px, transparent 1px),
    var(--color-primary-light);
  background-size: 24px 24px;
  color: rgba(217, 226, 236, 0.5);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.img-responsive {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ---------- 13. 响应式网格 ---------- */
.grid {
  display: grid;
  gap: 24px;
}

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

/* ---------- 14. 响应式断点 ---------- */
@media (max-width: 1024px) {
  :root {
    --header-height: 64px;
  }

  .site-header__brand-mark {
    font-size: 1rem;
  }

  .site-header__brand-name {
    font-size: 1.1rem;
  }

  .site-header__lang {
    margin-left: 16px;
    padding-left: 12px;
  }

  .site-nav__link {
    padding: 8px 8px;
    font-size: 0.82rem;
  }

  .site-nav__login {
    margin-left: 16px;
    padding: 8px 20px 8px 18px;
    font-size: 0.84rem;
  }

  .site-footer__inner {
    grid-template-columns: 1.5fr 1fr 1.2fr;
    gap: 32px;
  }

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

@media (max-width: 960px) {
  .site-header__inner {
    flex-wrap: wrap;
    padding: 10px 16px;
  }

  .site-header__lang {
    display: none;
  }

  .site-nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin: 10px -16px -10px;
    padding: 16px 0 20px;
  }

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

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

  .site-nav__item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .site-nav__link {
    display: block;
    padding: 13px 16px;
    font-size: 0.94rem;
  }

  .site-nav__link::after {
    left: 16px;
    right: auto;
    width: 36px;
    height: 2px;
    bottom: 6px;
    transform: scaleX(0);
  }

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

  .site-nav__login {
    margin: 16px 16px 0;
    justify-content: center;
  }

  .site-nav__login::after {
    display: none;
  }
}

@media (max-width: 768px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 20px 28px;
  }

  .site-footer__bottom {
    flex-direction: column;
    gap: 6px;
    text-align: center;
    padding: 16px 20px;
  }

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

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

@media (max-width: 520px) {
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .site-header__brand-name {
    display: none;
  }

  .site-header__brand-mark {
    font-size: 1.08rem;
    padding: 7px 20px 7px 12px;
  }
}

/* ---------- 15. 可访问性与焦点 ---------- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.site-nav__login:focus-visible {
  outline: 2px solid var(--color-white);
  outline-offset: 3px;
}

.site-nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.skip-link:focus-visible {
  outline: 2px solid var(--color-white);
  outline-offset: 0;
}

.site-footer a:focus-visible {
  outline: 2px solid var(--color-accent-light);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .site-nav__link::after,
  .site-nav-toggle__bar {
    transition: none !important;
  }

  .btn,
  .card,
  .site-nav__login {
    transform: none !important;
    transition: none !important;
  }
}

::selection {
  background: var(--color-accent);
  color: var(--color-white);
}