@charset "UTF-8";

/* ==========================================
   HTH竞技入口 · 全站共享样式 /assets/site.css
   ========================================== */

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

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

/* ---------- Design Tokens ---------- */
:root {
  --color-navy-900: #0B1F3A;
  --color-navy-700: #142D4C;
  --color-gold-500: #D4A53F;
  --color-gold-300: #EBC97E;
  --color-signal-red: #C7453B;
  --color-ice-blue: #A8C8E8;
  --color-off-white: #F2F4F8;
  --color-steel-gray: #7E8B9A;
  --color-data-green: #36C99E;
  --color-warning-orange: #E78B35;

  --font-heading: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-data: "Roboto Mono", "JetBrains Mono", monospace;

  --header-height: 72px;
  --content-max: 1440px;
  --border-thick: 3px;
  --shadow-hard: 6px 6px 0 rgba(0, 0, 0, 0.35);
}

@media (max-width: 600px) {
  :root {
    --header-height: 60px;
  }
}

/* ---------- Base ---------- */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-off-white);
  background:
    radial-gradient(1200px 800px at 82% -10%, rgba(20, 45, 76, 0.7), transparent 60%),
    var(--color-navy-900);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  line-height: 1.3;
  color: var(--color-off-white);
}

h1 {
  font-size: 40px;
  font-weight: 900;
}

h2 {
  font-size: 28px;
  font-weight: 800;
}

h3 {
  font-size: 20px;
  font-weight: 700;
}

p {
  margin-bottom: 16px;
}

a {
  color: var(--color-gold-300);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

a:hover {
  color: var(--color-gold-500);
}

/* ---------- Utilities ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 32px;
}

.container-narrow {
  max-width: 860px;
}

.section {
  padding: 72px 0;
}

.display-type {
  font-family: var(--font-heading);
  font-size: 56px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

@media (max-width: 600px) {
  .display-type {
    font-size: 36px;
  }
}

.data-text {
  font-family: var(--font-data);
  font-size: 20px;
  font-weight: 500;
  color: var(--color-gold-300);
}

.grid-bg {
  background-image:
    linear-gradient(rgba(20, 45, 76, 0.65) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 45, 76, 0.65) 1px, transparent 1px);
  background-size: 32px 32px;
}

.vertical-note {
  writing-mode: vertical-rl;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--color-steel-gray);
}

.sec-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--color-gold-500);
  text-transform: uppercase;
}

.sec-tag::before {
  content: "";
  width: 32px;
  height: 2px;
  background: var(--color-gold-500);
  display: inline-block;
}

.plate {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  background: var(--color-navy-700);
  border-left: 3px solid var(--color-gold-500);
  padding: 10px 16px;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-ice-blue);
}

.plate strong {
  font-family: var(--font-data);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-gold-500);
}

.ghost-number {
  font-family: var(--font-data);
  font-size: 160px;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(212, 165, 63, 0.25);
  user-select: none;
  pointer-events: none;
}

.card {
  background: var(--color-navy-700);
  padding: 28px;
  position: relative;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-gold-500);
  opacity: 0;
  transition: opacity 0.25s;
}

.card:hover::before,
.card:focus-within::before {
  opacity: 1;
}

.panel {
  background: var(--color-navy-700);
  border: var(--border-thick) solid var(--color-gold-500);
  box-shadow: var(--shadow-hard);
  padding: 32px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.125s ease, box-shadow 0.2s, background 0.2s, color 0.2s;
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: none !important;
}

.btn-primary {
  background: var(--color-gold-500);
  color: var(--color-navy-900);
  border-color: var(--color-gold-500);
  box-shadow: 4px 4px 0 var(--color-navy-700);
}

.btn-primary:hover {
  background: var(--color-gold-300);
  border-color: var(--color-gold-300);
  color: var(--color-navy-900);
  box-shadow: 2px 2px 0 var(--color-navy-700);
}

.btn-ghost {
  background: transparent;
  color: var(--color-gold-300);
  border-color: var(--color-gold-500);
}

.btn-ghost:hover {
  background: var(--color-gold-500);
  color: var(--color-navy-900);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0 0 24px;
  font-size: 13px;
  color: var(--color-steel-gray);
}

.breadcrumb a {
  color: var(--color-ice-blue);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-gold-300);
}

.breadcrumb li + li::before {
  content: "→";
  margin-right: 8px;
  color: var(--color-gold-500);
  font-family: var(--font-data);
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--color-gold-500);
  color: var(--color-navy-900);
  font-weight: 700;
  padding: 12px 20px;
  z-index: 200;
  text-decoration: none;
  border: 2px solid var(--color-navy-900);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.4);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-navy-900);
  border-bottom: 2px solid var(--color-gold-500);
}

.scroll-progress {
  position: absolute;
  bottom: -2px;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--color-gold-500), var(--color-signal-red));
  z-index: 101;
  transition: width 0.15s ease;
}

.header-shell {
  max-width: var(--content-max);
  margin: 0 auto;
  height: var(--header-height);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 0 32px;
}

.brand-lockup {
  display: flex;
  align-items: center;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--color-off-white);
  transition: opacity 0.2s;
}

.brand-link:hover {
  color: var(--color-off-white);
  opacity: 0.88;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 16px;
  color: var(--color-navy-900);
  background: var(--color-gold-500);
  padding: 6px 14px 6px 10px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  box-shadow: 3px 3px 0 var(--color-gold-300);
  line-height: 1;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-title {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--color-off-white);
}

.brand-subtitle {
  font-size: 11px;
  color: var(--color-steel-gray);
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.header-nav {
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 2px;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ice-blue);
  text-decoration: none;
  border-left: 3px solid transparent;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.nav-index {
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-steel-gray);
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--color-off-white);
  background: var(--color-navy-700);
  border-left-color: var(--color-gold-500);
}

.nav-link:hover .nav-index {
  color: var(--color-gold-500);
}

.nav-link[aria-current="page"] {
  color: var(--color-gold-500);
  border-left-color: var(--color-gold-500);
}

.nav-link[aria-current="page"] .nav-index {
  color: var(--color-gold-500);
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.round-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--color-navy-700);
  border: 1px solid var(--color-gold-500);
  border-radius: 999px;
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-gold-300);
  white-space: nowrap;
}

.round-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-data-green);
  animation: dot-pulse 2s ease-in-out infinite;
}

@keyframes dot-pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(0.8);
  }
}

.round-text {
  letter-spacing: 0.05em;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 2px solid var(--color-gold-500);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.nav-toggle:hover {
  background: var(--color-navy-700);
  border-color: var(--color-gold-300);
}

.toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-gold-500);
  transition: transform 0.3s, opacity 0.3s;
}

/* ---------- Responsive Header / Mobile Nav ---------- */
@media (max-width: 1200px) {
  .header-shell {
    gap: 16px;
    padding: 0 20px;
  }

  .nav-link {
    padding: 8px 8px;
  }
}

@media (max-width: 980px) {
  .header-shell {
    grid-template-columns: 1fr auto;
  }

  .header-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 99;
    display: flex;
    justify-content: stretch;
    background: var(--color-navy-900);
    border-bottom: 2px solid var(--color-gold-500);
    transform: translateY(-120%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0s linear 0.3s;
  }

  .header-nav[data-open] {
    transform: translateY(0);
    visibility: visible;
    transition: transform 0.3s ease, visibility 0s linear 0s;
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    padding: 16px 20px 24px;
    gap: 4px;
  }

  .nav-link {
    padding: 14px 16px;
    font-size: 16px;
    border-left: 3px solid transparent;
    border-bottom: none;
  }

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

  .nav-toggle {
    display: flex;
  }

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

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

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

@media (max-width: 600px) {
  .round-indicator {
    display: none;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  z-index: 10;
  background:
    linear-gradient(rgba(20, 45, 76, 0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 45, 76, 0.4) 1px, transparent 1px),
    var(--color-navy-900);
  background-size: 28px 28px;
  border-top: 3px solid var(--color-gold-500);
  margin-top: 96px;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 0;
  right: 0;
  height: 8px;
  background: repeating-linear-gradient(
    -45deg,
    var(--color-navy-700) 0 8px,
    var(--color-navy-900) 8px 16px
  );
  border-bottom: 1px solid rgba(212, 165, 63, 0.2);
}

.footer-main {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 56px;
  padding: 64px 32px 40px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 900;
  color: var(--color-off-white);
  text-decoration: none;
}

.footer-logo::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  background: var(--color-gold-500);
  transform: skewX(-15deg);
  box-shadow: 2px 2px 0 var(--color-gold-300);
}

.footer-logo:hover {
  color: var(--color-gold-300);
}

.footer-trust {
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-steel-gray);
  max-width: 360px;
}

.footer-note {
  margin-top: 16px;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-warning-orange);
  background: rgba(231, 139, 53, 0.08);
  border-left: 3px solid var(--color-warning-orange);
  padding: 10px 14px;
  max-width: 360px;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

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

.footer-heading {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-gold-500);
  letter-spacing: 0.1em;
  margin-bottom: 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(212, 165, 63, 0.3);
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--color-ice-blue);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover {
  color: var(--color-gold-300);
  padding-left: 4px;
}

.footer-contact {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-steel-gray);
}

.footer-meta {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 20px 32px;
  border-top: 1px solid var(--color-navy-700);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px 24px;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-steel-gray);
}

.footer-meta p {
  margin: 0;
}

@media (max-width: 1000px) {
  .footer-main {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

@media (max-width: 480px) {
  .footer-cols {
    grid-template-columns: 1fr;
  }
}

/* ---------- Back to Top ---------- */
.back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 48px;
  height: 48px;
  background: var(--color-gold-500);
  color: var(--color-navy-900);
  border: 2px solid var(--color-navy-900);
  font-family: var(--font-data);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.25s, transform 0.25s, box-shadow 0.2s, background 0.2s;
  z-index: 90;
}

.back-top:hover {
  background: var(--color-gold-300);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.4);
}

.back-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* ---------- Media Frame ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  background: var(--color-navy-700);
  border: 2px solid var(--color-navy-700);
  box-shadow: var(--shadow-hard);
}

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

.media-frame[data-ratio="wide"]::before {
  padding-top: 56.25%;
}

.media-frame[data-ratio="square"]::before {
  padding-top: 100%;
}

.media-frame[data-ratio="tall"]::before {
  padding-top: 140%;
}

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

.media-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    repeating-linear-gradient(
      -45deg,
      rgba(20, 45, 76, 0.6) 0 10px,
      rgba(11, 31, 58, 0.6) 10px 20px
    );
  color: var(--color-gold-500);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.media-placeholder::before {
  content: "HTH";
  display: inline-block;
  margin-right: 8px;
  padding: 2px 6px;
  background: var(--color-gold-500);
  color: var(--color-navy-900);
  font-size: 11px;
  font-weight: 700;
  clip-path: polygon(0 0, 100% 0, calc(100% - 5px) 100%, 0 100%);
}

/* ---------- Accessibility ---------- */
:focus-visible {
  outline: 3px solid var(--color-gold-500);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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