/* =========================================================
   宝威体育 BAOWEI SPORTS — 全站共享样式 /assets/site.css
   ========================================================= */

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

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

#main-content {
  flex: 1 0 auto;
  scroll-margin-top: calc(var(--header-h-main) + var(--header-h-top) + var(--space-3));
}

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

ul,
ol {
  list-style: none;
}

a {
  color: var(--color-space);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--duration-fast) var(--ease-out);
}

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

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

/* ---------- CSS Variables ---------- */
:root {
  --color-space: #0A1E3C;
  --color-ink: #050F1F;
  --color-volt: #39FF14;
  --color-ember: #FF6A00;
  --color-ice: #E6EEF8;
  --color-white: #FFFFFF;
  --color-steel: #B0B8C4;
  --color-gold: #F5B700;

  --color-bg: var(--color-ice);
  --color-text: #182C46;
  --color-border: rgba(10, 30, 60, 0.14);

  --font-heading: "Space Grotesk", "Archivo Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-size-body: 16px;

  --container-max: 1200px;
  --container-pad: 1.25rem;
  --radius-cut: 4px;
  --header-h-top: 2.4rem;
  --header-h-main: 4.5rem;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 0.2s;
  --duration-slow: 0.55s;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4.5rem;
  --space-8: 6.5rem;

  --line-height: 1.4;
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-space);
  text-transform: uppercase;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h4 { font-size: 1.1rem; }

/* ---------- Container ---------- */
.container {
  width: calc(100% - var(--container-pad) - var(--container-pad));
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Visually Hidden ---------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: absolute;
  top: -120%;
  left: var(--space-3);
  z-index: 1200;
  padding: var(--space-2) var(--space-4);
  background: var(--color-volt);
  color: var(--color-ink);
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  border-radius: 0 0 var(--radius-cut) var(--radius-cut);
  transition: top var(--duration-fast) var(--ease-out);
}

.skip-link:focus {
  top: 0;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.3rem;
  border-radius: var(--radius-cut);
  border: 2px solid transparent;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.btn:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
}

.btn-text {
  display: inline-block;
}

.btn-arrow {
  font-size: 1.05rem;
  line-height: 0;
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

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

.btn-volt:hover {
  background: var(--color-ember);
  border-color: var(--color-ember);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(230, 238, 248, 0.55);
  color: var(--color-white);
}

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

.btn-ember {
  background: var(--color-ember);
  border-color: var(--color-ember);
  color: var(--color-white);
}

.btn-ember:hover {
  background: var(--color-volt);
  border-color: var(--color-volt);
  color: var(--color-ink);
  transform: translateY(-2px);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-space);
  box-shadow: 0 6px 20px rgba(5, 15, 31, 0.28);
}

.header-top {
  position: relative;
  background: var(--color-ink);
  border-bottom: 1px solid rgba(176, 184, 196, 0.14);
}

.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: var(--header-h-top);
  font-size: 0.78rem;
  color: var(--color-steel);
}

.header-slogan {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 500;
  letter-spacing: 0.06em;
}

.slogan-flag {
  color: var(--color-volt);
  font-family: var(--font-heading);
  font-weight: 700;
}

.header-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  letter-spacing: 0.05em;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-volt);
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.8);
  animation: status-pulse 2s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.header-status-text {
  white-space: nowrap;
}

.header-main {
  position: relative;
  background:
    repeating-linear-gradient(
      -45deg,
      rgba(255, 255, 255, 0.025) 0,
      rgba(255, 255, 255, 0.025) 2px,
      transparent 2px,
      transparent 14px
    ),
    var(--color-space);
}

.header-main::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-volt) 0 68%, var(--color-ember) 68% 100%);
  pointer-events: none;
}

.header-main-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: var(--header-h-main);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-white);
}

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

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-volt) 0 50%, var(--color-ember) 50% 100%);
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  transform: skewX(-8deg);
  border-radius: 3px;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.1;
  color: var(--color-white);
  text-transform: uppercase;
}

.brand-sub {
  margin-top: 2px;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-steel);
}

.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-item {
  position: relative;
}

.nav-link {
  position: relative;
  display: block;
  padding: 0.6rem 0.8rem;
  color: rgba(230, 238, 248, 0.82);
  font-size: 0.93rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0.8rem;
  right: 0.8rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--color-volt);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-out);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-white);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  transform: scaleX(1);
}

.nav-link[aria-current="page"] {
  color: var(--color-volt);
  font-weight: 700;
}

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

.btn-header-cta {
  flex: 0 0 auto;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: var(--space-2);
  background: transparent;
  border: 1px solid rgba(230, 238, 248, 0.3);
  border-radius: var(--radius-cut);
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out);
}

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

.nav-toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  transition: transform var(--duration-fast) var(--ease-out), opacity var(--duration-fast) var(--ease-out);
}

.nav-toggle:hover .nav-toggle-line {
  background: var(--color-volt);
}

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

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

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

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

@media (max-width: 960px) {
  .header-top {
    display: none;
  }

  .header-main-inner {
    flex-wrap: wrap;
    min-height: auto;
    padding-block: var(--space-2);
  }

  .brand-badge {
    width: 36px;
    height: 36px;
    font-size: 0.8rem;
  }

  .brand-name {
    font-size: 1.1rem;
  }

  .btn-header-cta {
    margin-left: auto;
    padding: 0.55rem 0.9rem;
    font-size: 0.82rem;
  }

  .site-nav {
    display: none;
    order: 9;
    width: 100%;
    margin-left: 0;
    padding: var(--space-2) 0 var(--space-3);
    border-top: 1px solid rgba(230, 238, 248, 0.12);
  }

  .site-nav[data-open] {
    display: block;
    animation: nav-drop 0.25s var(--ease-out);
  }

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

  .nav-link {
    padding: 0.9rem 0.5rem;
    border-bottom: 1px solid rgba(230, 238, 248, 0.08);
    font-size: 1rem;
  }

  .nav-link[aria-current="page"] {
    background: linear-gradient(90deg, rgba(57, 255, 20, 0.18), transparent 70%);
    box-shadow: inset 3px 0 0 var(--color-volt);
  }

  .nav-link[aria-current="page"]::after {
    transform: scaleX(0);
  }

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

  #main-content {
    scroll-margin-top: calc(var(--header-h-main) + var(--space-2));
  }
}

@media (max-width: 640px) {
  .brand-sub {
    display: none;
  }

  .header-main-inner {
    gap: var(--space-2);
  }

  .btn-header-cta {
    padding: 0.5rem 0.7rem;
    font-size: 0.78rem;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: var(--color-ink);
  color: var(--color-steel);
  border-top: 4px solid var(--color-volt);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 42%;
  height: 4px;
  background: var(--color-ember);
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.7fr 1fr 0.7fr;
  gap: var(--space-6) var(--space-5);
  padding-block: var(--space-7) var(--space-5);
}

.footer-col,
.footer-brand-col,
.footer-nav-col,
.footer-contact-col,
.footer-legal-col {
  min-width: 0;
}

.footer-brand {
  display: inline-flex;
  margin-bottom: var(--space-4);
}

.footer-trust {
  max-width: 36ch;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--color-steel);
}

.footer-address {
  margin-top: var(--space-4);
  padding-left: var(--space-3);
  border-left: 3px solid var(--color-ember);
  font-size: 0.82rem;
  line-height: 1.6;
}

.footer-label {
  display: block;
  margin-bottom: 2px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-gold);
}

.footer-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-white);
}

.footer-title-mark {
  color: var(--color-volt);
  font-family: var(--font-heading);
  font-weight: 700;
}

.footer-links {
  display: grid;
  gap: var(--space-3);
}

.footer-links a {
  color: var(--color-steel);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color var(--duration-fast) var(--ease-out), padding-left var(--duration-fast) var(--ease-out);
}

.footer-links a:hover {
  color: var(--color-volt);
  padding-left: 4px;
}

.footer-contact {
  display: grid;
  gap: var(--space-3);
}

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

.contact-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-steel);
  opacity: 0.75;
}

.contact-value {
  font-size: 0.92rem;
  color: var(--color-white);
  word-break: break-word;
}

.footer-disclaimer {
  margin-top: var(--space-4);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--color-steel);
  opacity: 0.7;
}

.footer-bottom {
  border-top: 1px solid rgba(176, 184, 196, 0.16);
  padding-block: var(--space-4);
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--color-steel);
}

.footer-company {
  color: var(--color-white);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.footer-icp {
  font-size: 0.85rem;
  color: var(--color-steel);
  letter-spacing: 0.05em;
}

@media (max-width: 960px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
    padding-top: var(--space-6);
  }

  .footer-brand-col {
    grid-column: 1 / -1;
    max-width: 48ch;
  }

  .footer-contact-col {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
    padding-top: var(--space-5);
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding-top: var(--space-4);
  font-size: 0.82rem;
  color: var(--color-steel);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb-list li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb-list li:not(:last-child)::after {
  content: "/";
  color: var(--color-steel);
}

.breadcrumb-list a {
  color: var(--color-space);
  text-decoration: none;
}

.breadcrumb-list a:hover {
  color: var(--color-ember);
}

.breadcrumb-list [aria-current="page"] {
  color: var(--color-ember);
  font-weight: 600;
}

/* ---------- Section ---------- */
.section {
  padding-block: var(--space-7);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--color-ember);
}

.section-kicker::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 3px;
  background: var(--color-ember);
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: var(--space-5);
}

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

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

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

@media (max-width: 960px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ---------- Card ---------- */
.card {
  position: relative;
  padding: var(--space-5);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-cut);
  box-shadow: 0 2px 8px rgba(10, 30, 60, 0.05);
  transition: transform var(--duration-slow) var(--ease-out), box-shadow var(--duration-slow) var(--ease-out);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 30px rgba(5, 15, 31, 0.16);
}

.card-title {
  margin-bottom: var(--space-3);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  text-transform: uppercase;
  color: var(--color-space);
}

.card-text {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text);
}

.card-link {
  margin-top: var(--space-4);
}

/* ---------- Tag ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0.25rem 0.65rem;
  border-radius: 2px;
  background: rgba(255, 106, 0, 0.14);
  color: var(--color-ember);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tag-volt {
  background: var(--color-volt);
  color: var(--color-ink);
}

/* ---------- Data Item ---------- */
.data-item {
  display: grid;
  gap: var(--space-1);
}

.data-value {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  line-height: 1;
  color: var(--color-space);
}

.data-label {
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-steel);
}

/* ---------- Link More ---------- */
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-space);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.link-more::after {
  content: "\2192";
  font-size: 1.1rem;
  line-height: 0;
  transition: transform var(--duration-fast) var(--ease-out);
}

.link-more:hover {
  color: var(--color-ember);
}

.link-more:hover::after {
  transform: translateX(4px);
}

/* ---------- Panel & Speed Lines ---------- */
.panel-cut {
  position: relative;
  padding: var(--space-6);
  background: linear-gradient(135deg, var(--color-space) 0%, var(--color-ink) 100%);
  color: var(--color-ice);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.panel-cut h1,
.panel-cut h2,
.panel-cut h3,
.panel-cut h4 {
  color: var(--color-white);
}

.panel-cut p {
  color: var(--color-steel);
}

.speed-lines {
  position: relative;
  overflow: hidden;
}

.speed-lines::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.05) 0,
    rgba(255, 255, 255, 0.05) 2px,
    transparent 2px,
    transparent 18px
  );
  pointer-events: none;
}

/* ---------- Media ---------- */
.media {
  position: relative;
  overflow: hidden;
  background-color: var(--color-space);
  aspect-ratio: 4 / 3;
}

.media-wide {
  aspect-ratio: 16 / 9;
}

.media-portrait {
  aspect-ratio: 3 / 4;
}

.media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- Reveal ---------- */
html.has-js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

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

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .status-dot {
    animation: none !important;
  }

  .card:hover,
  .btn:hover {
    transform: none;
  }

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