/* ========== 皇冠体肓站 Shared Site CSS ========== */

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

* {
  margin: 0;
}

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

body {
  min-height: 100vh;
  line-height: 1.75;
  font-family: var(--font-body);
  background: var(--color-light);
  color: var(--color-ink);
  -webkit-font-smoothing: antialiased;
}

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

input,
button,
textarea,
select {
  font: inherit;
}

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

a {
  color: var(--color-link);
}

ul,
ol {
  list-style: none;
  padding: 0;
}

/* ---------- Tokens ---------- */
:root {
  --color-deep: #0b1f3a;
  --color-gold: #c9a063;
  --color-silver: #c0c0c0;
  --color-light: #f4f6fa;
  --color-ink: #1a1a1a;
  --color-muted: #4a4a4a;
  --color-link: #2b5c8a;
  --color-black: #000000;

  --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Noto Serif SC", "Songti SC", "SimSun", Georgia, "Times New Roman", serif;

  --container: 1200px;
  --container-narrow: 880px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 2rem;
  --space-4: 4rem;
  --space-5: 7rem;

  --border-thick: 3px;
  --border-med: 2px;
  --border-thin: 1px;

  --shadow-hard: 6px 6px 0 0 rgba(11, 31, 58, 0.32);
  --shadow-soft: 0 10px 32px rgba(11, 31, 58, 0.14);

  --header-h: 74px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Base Typography ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-deep);
}

p {
  margin-block: 0.6em;
}

a {
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

::selection {
  background: var(--color-gold);
  color: var(--color-deep);
}

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

#main-content {
  scroll-margin-top: calc(var(--header-h) + 24px);
  display: block;
}

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

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--space-4);
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 500;
  background: var(--color-gold);
  color: var(--color-deep);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.6rem 1.2rem;
  border: 2px solid var(--color-deep);
  text-decoration: none;
  transform: translateY(-250%);
  transition: transform 0.3s var(--ease);
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--color-deep);
  border-bottom: var(--border-thick) solid var(--color-gold);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 88px;
  height: 3px;
  background: var(--color-gold);
  z-index: 1;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container);
  margin-inline: auto;
  padding: 0.6rem 1.5rem;
  min-height: var(--header-h);
  border-bottom: 1px solid rgba(192, 192, 192, 0.18);
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: #fff;
  text-decoration: none;
  flex-shrink: 0;
}

.brand__mark {
  color: var(--color-gold);
  width: 42px;
  height: 42px;
  flex-shrink: 0;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.4rem;
  letter-spacing: 0.16em;
  color: #fff;
  text-shadow: 0 2px 0 rgba(201, 160, 99, 0.35);
}

.brand__sub {
  margin-top: 4px;
  font-family: var(--font-body);
  font-size: 0.62rem;
  letter-spacing: 0.42em;
  color: var(--color-silver);
  text-transform: uppercase;
}

/* Primary Nav */
.primary-nav {
  display: block;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  margin: 0;
}

.nav__link {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.55rem 0.75rem;
  color: var(--color-silver);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  border: var(--border-thin) solid transparent;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
  border-radius: 2px;
}

.nav__index {
  font-family: var(--font-body);
  font-size: 0.6rem;
  font-weight: 400;
  color: var(--color-gold);
  letter-spacing: 0;
}

.nav__label {
  white-space: nowrap;
}

.nav__link:hover {
  color: #fff;
  background: rgba(201, 160, 99, 0.1);
  border-color: rgba(201, 160, 99, 0.45);
}

.nav__link[aria-current="page"] {
  color: #fff;
  background: rgba(201, 160, 99, 0.14);
  border-color: var(--color-gold);
  border-bottom: 2px solid var(--color-gold);
}

/* Nav Toggle */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: none;
  color: var(--color-gold);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.5rem 0.65rem;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: border-color 0.25s, background 0.25s;
}

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

.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-gold);
  transition: transform 0.3s var(--ease), background 0.3s;
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(1) {
  transform: translateY(3.5px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(2) {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* Progress Line */
.progress-line {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  z-index: 410;
  pointer-events: none;
}

.progress-line__bar {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-silver) 100%);
}

/* ---------- Mobile Nav Overlay ---------- */
@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
  }

  .primary-nav {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    height: 100dvh;
    width: min(340px, 88vw);
    background: var(--color-deep);
    border-left: var(--border-thick) solid var(--color-gold);
    padding: calc(var(--header-h) + 2rem) 1.8rem 2rem;
    transform: translateX(105%);
    transition: transform 0.42s var(--ease);
    z-index: 250;
    overflow-y: auto;
  }

  .primary-nav[data-open] {
    transform: translateX(0);
    box-shadow: 0 0 0 100vmax rgba(0, 0, 0, 0.55);
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
  }

  .nav__link {
    justify-content: flex-start;
    padding: 0.9rem 1rem;
    font-size: 1rem;
    border-bottom: 1px solid rgba(192, 192, 192, 0.15);
    border-left: var(--border-thick) solid transparent;
    border-top: none;
    border-right: none;
    border-radius: 0;
  }

  .nav__link:hover {
    background: rgba(201, 160, 99, 0.08);
    border-left-color: var(--color-gold);
  }

  .nav__link[aria-current="page"] {
    background: rgba(201, 160, 99, 0.12);
    border-left-color: var(--color-gold);
    border-bottom: 1px solid rgba(192, 192, 192, 0.15);
  }

  .nav__index {
    font-size: 0.65rem;
    min-width: 1.8rem;
  }

  body.nav-locked {
    overflow: hidden;
  }

  body.nav-locked .site-header {
    z-index: 300;
  }
}

/* ---------- Button ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.8rem 1.7rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  border: var(--border-med) solid var(--color-deep);
  border-radius: 2px;
  cursor: pointer;
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease), background 0.22s, color 0.22s;
}

.btn--primary {
  background: var(--color-gold);
  color: var(--color-deep);
  box-shadow: var(--shadow-hard);
}

.btn--primary:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 0 rgba(11, 31, 58, 0.28);
}

.btn--outline {
  background: transparent;
  color: var(--color-deep);
  border-color: var(--color-deep);
}

.btn--outline:hover {
  background: var(--color-deep);
  color: #fff;
}

.btn--ghost {
  background: transparent;
  color: #fff;
  border-color: var(--color-silver);
}

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

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  padding: 0;
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-inline: 0.4rem;
  color: var(--color-gold);
}

.breadcrumbs a {
  color: var(--color-link);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--color-deep);
}

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

/* ---------- Section Heading ---------- */
.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: var(--space-3);
}

.section-head__index {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.section-head__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.4vw, 2.8rem);
  line-height: 1.1;
  color: var(--color-deep);
}

/* ---------- Tag ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.75rem;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border: var(--border-thin) solid var(--color-silver);
  border-radius: 2px;
  color: var(--color-muted);
  background: #fff;
}

.tag--gold {
  border-color: var(--color-gold);
  color: var(--color-deep);
  background: rgba(201, 160, 99, 0.18);
}

/* ---------- Data Card ---------- */
.data-card {
  background: #fff;
  border: var(--border-med) solid var(--color-deep);
  border-radius: 2px;
  box-shadow: var(--shadow-hard);
  padding: var(--space-3);
}

.data-card__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.data-card__meta {
  font-size: 0.8rem;
  color: var(--color-muted);
  letter-spacing: 0.06em;
}

/* ---------- Media ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-deep) 0%, #18314f 60%, #2b5c8a 100%);
  border: var(--border-med) solid var(--color-deep);
  border-radius: 2px;
}

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

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

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

.media--ratio-1-1 {
  aspect-ratio: 1 / 1;
}

.media__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.8rem 1rem;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.65), transparent);
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: var(--color-deep);
  color: var(--color-silver);
  border-top: var(--border-thick) solid var(--color-gold);
  margin-top: calc(var(--space-5) + var(--space-3));
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -3px;
  right: 0;
  width: 110px;
  height: 3px;
  background: var(--color-silver);
}

.site-footer__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: var(--space-4) 1.5rem var(--space-3);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: var(--space-4);
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: var(--space-2);
}

.footer-brand__mark {
  color: var(--color-gold);
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.footer-brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.25rem;
  color: #fff;
  letter-spacing: 0.12em;
}

.footer-desc {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-silver);
  max-width: 30em;
}

.footer-trust {
  font-size: 0.82rem;
  line-height: 1.65;
  color: rgba(192, 192, 192, 0.72);
  max-width: 34em;
  border-left: 2px solid var(--color-gold);
  padding-left: 0.8rem;
}

.footer-contact {
  font-size: 0.82rem;
  line-height: 1.65;
  color: rgba(192, 192, 192, 0.72);
}

.footer-title {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.85rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #fff;
  border-bottom: 2px solid var(--color-gold);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.footer-title__index {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.72rem;
  color: var(--color-gold);
  letter-spacing: 0;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-links a {
  color: var(--color-silver);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.2s, padding-left 0.2s;
}

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

.footer-archive {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.archive-link {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--color-silver);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 1px dashed rgba(192, 192, 192, 0.25);
  padding-bottom: 0.35rem;
  transition: color 0.2s, border-color 0.2s;
}

.archive-link:hover {
  color: var(--color-gold);
  border-bottom-color: var(--color-gold);
}

.archive-no {
  font-family: var(--font-display);
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--color-gold);
  background: rgba(201, 160, 99, 0.12);
  border: 1px solid rgba(201, 160, 99, 0.4);
  padding: 0.1rem 0.4rem;
  border-radius: 2px;
  min-width: 2.2rem;
  text-align: center;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  border-top: 1px solid rgba(192, 192, 192, 0.16);
  padding-top: var(--space-2);
  margin-top: var(--space-3);
  font-size: 0.8rem;
  color: rgba(192, 192, 192, 0.72);
}

.footer-copy {
  margin: 0;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.footer-legal a {
  color: var(--color-silver);
  text-decoration: none;
  font-size: 0.8rem;
  transition: color 0.2s;
}

.footer-legal a:hover {
  color: var(--color-gold);
}

.footer-icp {
  margin-left: auto;
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  color: rgba(192, 192, 192, 0.6);
}

/* ---------- To Top ---------- */
.to-top {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  width: 48px;
  height: 48px;
  background: var(--color-deep);
  border: var(--border-med) solid var(--color-gold);
  border-radius: 50%;
  color: var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.3s var(--ease), visibility 0.3s, transform 0.3s var(--ease), background 0.2s, color 0.2s;
}

.to-top svg {
  width: 20px;
  height: 20px;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.to-top:hover {
  background: var(--color-gold);
  color: var(--color-deep);
}

/* ---------- Scroll Reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.8s var(--ease) var(--reveal-delay, 0s),
    transform 0.8s var(--ease) var(--reveal-delay, 0s);
}

[data-reveal][data-revealed] {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }

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

@media (max-width: 640px) {
  :root {
    --header-h: 62px;
  }

  .site-header__inner {
    padding: 0.5rem 1rem;
  }

  .brand__mark {
    width: 34px;
    height: 34px;
  }

  .brand__title {
    font-size: 1.15rem;
  }

  .brand__sub {
    font-size: 0.56rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

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

  .footer-icp {
    margin-left: 0;
  }

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

/* ---------- Reduced Motion ---------- */
@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;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}