/* ============================================
   胜天国际 Site Kit
   展览画册式 · 深空蓝 / 金 / 朱砂
   文件位置：/assets/site.css
   ============================================ */

/* ---------- 设计变量 ---------- */
:root {
  --color-navy: #0B1B3A;
  --color-blue: #1E4FA3;
  --color-gold: #C9A227;
  --color-vermilion: #C8352A;
  --color-ink: #0A0A0A;
  --color-pearl: #F4F4F4;
  --color-white: #FFFFFF;
  --color-paper: #FAF7F0;
  --color-body: #26313D;
  --color-muted: #5B6B7C;
  --color-border: rgba(11, 27, 58, 0.12);
  --color-border-dark: rgba(255, 255, 255, 0.12);
  --font-heading: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Serif SC", "Songti SC", "STSong", SimSun, serif;
  --font-data: "JetBrains Mono", "SF Mono", "Cascadia Mono", Consolas, monospace;
  --header-width: 280px;
  --header-height: 64px;
  --container-max: 1240px;
  --radius: 4px;
}

/* ---------- 重置与基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-body);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.75rem;
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-navy);
}

p {
  margin: 0 0 1.25rem;
}

ul, ol {
  margin: 0 0 1.25rem;
  padding-left: 1.5rem;
}

a {
  color: var(--color-blue);
  transition: color 0.25s ease;
}

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

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

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

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

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

/* ---------- 内容容器与主内容 ---------- */
.site-container {
  width: min(var(--container-max), 100%);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
}

#main-content {
  min-height: 70vh;
  background: var(--color-paper);
}

#main-content:focus {
  outline: none;
}

#main-content:focus-visible {
  outline: 2px dashed var(--color-gold);
  outline-offset: -6px;
}

/* ---------- 跳过链接 ---------- */
.skip-link {
  position: fixed;
  top: -100px;
  left: clamp(1rem, 4vw, 3rem);
  z-index: 9999;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-white);
  text-decoration: none;
  background: var(--color-navy);
  border: 1px solid var(--color-gold);
  border-radius: var(--radius);
  transition: top 0.3s ease;
}

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

/* ---------- 页头 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  width: var(--header-width);
  height: 100vh;
  padding: 2rem 1.5rem 1.5rem;
  overflow-y: auto;
  color: var(--color-white);
  background:
    radial-gradient(circle at 80% 20%, rgba(201, 162, 39, 0.06), transparent 46%),
    var(--color-navy);
  border-right: 1px solid rgba(201, 162, 39, 0.22);
  box-shadow: 6px 0 24px rgba(0, 0, 0, 0.16);
}

.site-header__goldline {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-gold) 0%, rgba(201, 162, 39, 0.35) 70%, transparent 100%);
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 2.75rem;
  padding-bottom: 1.5rem;
  text-decoration: none;
  border-bottom: 1px solid var(--color-border-dark);
}

.site-header__badge {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 900;
  line-height: 1;
  color: var(--color-gold);
  border: 2px solid var(--color-gold);
  border-radius: var(--radius);
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.site-header__mark {
  font-family: var(--font-heading);
  font-size: 1.65rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: 0.08em;
  color: var(--color-white);
}

.site-header__sub {
  font-family: var(--font-data);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.5);
}

.site-header__toggle {
  display: none;
}

.site-header__toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  transition: transform 0.3s ease;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__item {
  margin: 0;
  padding: 0;
}

.site-nav__link {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  padding: 0.85rem 0.7rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease, padding-left 0.25s ease;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--color-white);
  padding-left: 1.05rem;
  background: rgba(255, 255, 255, 0.05);
  border-left-color: var(--color-gold);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-white);
  border-left-color: var(--color-gold);
  background: linear-gradient(90deg, rgba(201, 162, 39, 0.18), rgba(201, 162, 39, 0));
}

.site-nav__num {
  font-family: var(--font-data);
  font-size: 0.7rem;
  color: var(--color-gold);
  opacity: 0.8;
}

.site-nav__text {
  line-height: 1.4;
}

.site-header__foot {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border-dark);
}

.site-header__note {
  font-family: var(--font-body);
  font-size: 0.74rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.5);
}

.site-header__icp {
  font-family: var(--font-data);
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.35);
}

.site-header__contact {
  font-family: var(--font-data);
  font-size: 0.9rem;
  color: var(--color-gold);
  text-decoration: none;
}

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

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  color: rgba(255, 255, 255, 0.7);
  background: var(--color-ink);
}

.site-footer__goldline {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold) 0%, rgba(201, 162, 39, 0.18) 55%, transparent 100%);
}

.site-footer__main {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2.5rem;
  padding-top: 3.25rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border-dark);
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-footer__badge {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 900;
  line-height: 1;
  color: var(--color-gold);
  border: 2px solid var(--color-gold);
  border-radius: var(--radius);
}

.site-footer__brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.site-footer__mark {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.08em;
  color: var(--color-white);
}

.site-footer__sub {
  font-family: var(--font-data);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.45);
}

.site-footer__icp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 1.1rem;
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
  white-space: nowrap;
  border: 1px solid rgba(201, 162, 39, 0.35);
  border-radius: 999px;
}

.site-footer__access {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
}

.site-footer__label {
  margin-top: 0.45rem;
  font-family: var(--font-data);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.site-footer__label:first-child {
  margin-top: 0;
}

.site-footer__phone,
.site-footer__mail {
  font-family: var(--font-data);
  font-size: 0.9rem;
  color: var(--color-white);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
}

.site-footer__copyright {
  margin: 0;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
}

.site-footer__link {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  transition: color 0.25s ease;
}

.site-footer__link:hover {
  color: var(--color-gold);
}

/* ---------- 区块与网格 ---------- */
.site-section {
  padding: clamp(3rem, 7vw, 6rem) 0;
}

.site-section--dark {
  color: var(--color-white);
  background: var(--color-navy);
}

.site-section--white {
  background: var(--color-white);
}

.site-section--paper {
  background: var(--color-paper);
}

.site-section--dark .site-title {
  color: var(--color-white);
}

.site-section--dark .site-lead {
  color: var(--color-muted-dark);
}

.site-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
}

.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-6 { grid-column: span 6; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

/* ---------- 标题与导语 ---------- */
.site-kicker {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.site-kicker::before {
  content: '';
  width: 2.25rem;
  height: 1px;
  background: var(--color-gold);
}

.site-kicker--center {
  justify-content: center;
}

.site-kicker--center::before,
.site-kicker--center::after {
  content: '';
  width: 2.25rem;
  height: 1px;
  background: var(--color-gold);
}

.site-title {
  margin-bottom: 1rem;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-navy);
}

.site-title--invert {
  color: var(--color-white);
}

.site-lead {
  max-width: 60ch;
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--color-muted);
}

.site-lead--invert {
  color: rgba(255, 255, 255, 0.65);
}

/* ---------- 按钮 ---------- */
.site-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55em;
  padding: 0.8rem 1.6rem;
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-white);
  text-decoration: none;
  background: var(--color-navy);
  border: 2px solid var(--color-navy);
  border-radius: var(--radius);
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.site-btn:hover {
  color: var(--color-white);
  background: var(--color-blue);
  border-color: var(--color-blue);
}

.site-btn--gold {
  color: var(--color-navy);
  background: var(--color-gold);
  border-color: var(--color-gold);
}

.site-btn--gold:hover {
  color: var(--color-gold);
  background: transparent;
  border-color: var(--color-gold);
}

.site-btn--ghost {
  color: var(--color-navy);
  background: transparent;
  border-color: var(--color-navy);
}

.site-btn--ghost:hover {
  color: var(--color-white);
  background: var(--color-navy);
  border-color: var(--color-navy);
}

.site-btn--sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.82rem;
}

/* ---------- 面包屑 ---------- */
.site-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 2rem;
  padding: 0;
  font-family: var(--font-data);
  font-size: 0.82rem;
  color: var(--color-muted);
  list-style: none;
}

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

.site-breadcrumbs a:hover {
  color: var(--color-gold);
  text-decoration: underline;
}

.site-breadcrumbs__sep {
  opacity: 0.45;
}

/* ---------- 数据标签 ---------- */
.site-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-family: var(--font-data);
  font-size: 0.72rem;
  color: var(--color-blue);
  white-space: nowrap;
  border: 1px solid var(--color-blue);
  border-radius: 999px;
}

.site-tag--gold {
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.site-tag--vermilion {
  color: var(--color-vermilion);
  border-color: var(--color-vermilion);
}

.site-stat {
  font-family: var(--font-data);
  font-size: 2rem;
  line-height: 1.2;
  color: var(--color-gold);
}

.site-version {
  font-family: var(--font-data);
  font-size: 0.85rem;
  color: var(--color-gold);
}

.site-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 0.4rem;
  background: var(--color-vermilion);
  border-radius: 50%;
}

/* ---------- 分隔线 ---------- */
.site-divider {
  display: block;
  width: 100%;
  height: 1px;
  margin: 2.5rem 0;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-border) 85%);
}

/* ---------- 图片容器 ---------- */
.site-figure {
  display: block;
  margin: 2.5rem 0;
}

.site-figure__media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background:
    radial-gradient(circle at 75% 25%, rgba(30, 79, 163, 0.55), transparent 48%),
    linear-gradient(135deg, var(--color-navy), var(--color-blue));
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.site-figure__media::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.09) 1px, transparent 1px);
  background-size: 14px 14px;
}

.site-figure__media img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.site-figure--wide .site-figure__media {
  aspect-ratio: 21 / 9;
}

.site-figure--portrait .site-figure__media {
  aspect-ratio: 3 / 4;
}

.site-figure__caption {
  margin-top: 0.6rem;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--color-muted);
}

/* ---------- 主题筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin: 1.5rem 0;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.1rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-navy);
  background: transparent;
  border: 1px solid rgba(11, 27, 58, 0.25);
  border-radius: 999px;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

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

.filter-btn.is-active {
  color: var(--color-white);
  background: var(--color-navy);
  border-color: var(--color-navy);
}

.filter-item.is-hidden {
  display: none;
}

/* ---------- 滚动显现 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.js [data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 移动端适配 ---------- */
@media (max-width: 960px) {
  .site-header {
    position: sticky;
    top: 0;
    left: 0;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: var(--header-height);
    padding: 0 0.75rem 0 1.25rem;
    border-right: none;
    border-bottom: 1px solid rgba(201, 162, 39, 0.3);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.22);
  }

  .site-header__goldline {
    height: 3px;
  }

  .site-header__brand {
    margin: 0;
    padding: 0;
    border-bottom: none;
  }

  .site-header__badge {
    width: 34px;
    height: 34px;
    font-size: 1.1rem;
    border-width: 1px;
  }

  .site-header__mark {
    font-size: 1.25rem;
    letter-spacing: 0.04em;
  }

  .site-header__sub,
  .site-header__foot {
    display: none;
  }

  .site-header__toggle {
    position: relative;
    z-index: 960;
    display: flex;
    flex: 0 0 auto;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 46px;
    height: 46px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: var(--radius);
  }

  .site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
  }

  .site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(2) {
    transform: translateY(-4px) rotate(-45deg);
  }

  .js .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 950;
    width: min(320px, 82vw);
    height: 100vh;
    padding: 5.5rem 2rem 2rem;
    overflow-y: auto;
    background: var(--color-navy);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.32);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1), visibility 0.4s;
  }

  .js .site-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
  }

  .js .site-nav__link {
    font-size: 1.1rem;
  }

  body[data-menu-open]::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 949;
    background: rgba(5, 10, 25, 0.55);
    pointer-events: auto;
  }

  #main-content,
  .site-footer {
    margin-left: 0;
  }

  .site-footer__main {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-top: 2.5rem;
    text-align: center;
  }

  .site-footer__brand,
  .site-footer__access {
    align-items: center;
  }

  .site-footer__icp {
    justify-self: center;
  }

  .site-footer__bottom {
    flex-direction: column;
    justify-content: center;
    text-align: center;
  }

  .col-3,
  .col-4,
  .col-8 {
    grid-column: span 12;
  }
}

@media (min-width: 641px) and (max-width: 960px) {
  .col-6 {
    grid-column: span 6;
  }
}

/* ---------- 平板及以上主区偏移 ---------- */
@media (min-width: 961px) {
  #main-content,
  .site-footer {
    margin-left: var(--header-width);
  }
}

/* ---------- 减少动态偏好 ---------- */
@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;
  }

  .js [data-reveal],
  .js [data-reveal].is-revealed {
    opacity: 1 !important;
    transform: none !important;
    transition-delay: 0ms !important;
  }
}