/* ============ 大发CN 共享样式 ============ */
/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  min-height: 100vh;
  background: var(--df-c-blue-deep);
  color: var(--df-c-text);
  font-family: var(--df-font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--df-font-head);
  font-weight: 900;
  line-height: 1.25;
  color: var(--df-c-text);
  letter-spacing: 0.02em;
}

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

a {
  color: var(--df-c-gold-light);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color 0.25s ease;
}
a:hover { color: var(--df-c-gold-light); }

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

:focus-visible {
  outline: 2px solid var(--df-c-gold-light);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection { background: rgba(255, 107, 0, 0.35); color: #fff; }

#main-content { scroll-margin-top: var(--df-header-h); }

/* ============ 变量 ============ */
:root {
  --df-c-blue-deep: #0A1A3A;
  --df-c-blue-navy: #102447;
  --df-c-gold: #C9A87C;
  --df-c-gold-light: #E5C687;
  --df-c-orange: #FF6B00;
  --df-c-text: #E5E9F0;
  --df-c-text-sub: #A8B0C0;
  --df-c-border: rgba(201, 168, 124, 0.35);
  --df-c-glass: rgba(255, 255, 255, 0.06);
  --df-c-glass-strong: rgba(255, 255, 255, 0.09);
  --df-font-head: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --df-font-body: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --df-header-h: 64px;
  --df-container: 1240px;
  --df-gutter: clamp(20px, 4vw, 48px);
  --df-radius: 4px;
  --df-ts: 0.3s ease;
}

@media (min-width: 768px) {
  :root { --df-header-h: 76px; }
}

/* ============ 布局 ============ */
.df-main { position: relative; }
.df-main:focus { outline: none; }

.df-container {
  width: 100%;
  max-width: var(--df-container);
  margin-inline: auto;
  padding-inline: var(--df-gutter);
}

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

.df-section { padding: 64px 0; }
@media (min-width: 768px) { .df-section { padding: 96px 0; } }

.df-section__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--df-c-border);
  margin-bottom: 40px;
}

.df-section__num {
  flex-shrink: 0;
  margin-top: 4px;
  font-family: var(--df-font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--df-c-gold);
  border: 1px solid var(--df-c-border);
  border-radius: 2px;
  padding: 3px 10px;
}

.df-section__title {
  margin-bottom: 8px;
  font-size: clamp(26px, 3.6vw, 40px);
  letter-spacing: 0.04em;
}

.df-section__desc {
  max-width: 720px;
  color: var(--df-c-text-sub);
  font-size: 15px;
}

/* 栅格 */
.df-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 640px) {
  .df-grid--2, .df-grid--3, .df-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .df-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .df-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ============ 按钮 ============ */
.df-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--df-font-head);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.08em;
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--df-radius);
  transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}
.df-btn:hover { text-decoration: none; }

.df-btn--primary {
  background: var(--df-c-orange);
  color: var(--df-c-blue-deep);
  border-color: var(--df-c-orange);
}
.df-btn--primary:hover {
  background: #ff7f2b;
  color: var(--df-c-blue-deep);
  box-shadow: 0 8px 24px rgba(255, 107, 0, 0.3);
  transform: translateY(-1px);
}

.df-btn--ghost {
  background: transparent;
  color: var(--df-c-gold-light);
  border-color: var(--df-c-border);
}
.df-btn--ghost:hover {
  background: rgba(201, 168, 124, 0.1);
  border-color: var(--df-c-gold-light);
}

.df-btn--sm { padding: 8px 18px; font-size: 13px; }

/* ============ 面包屑 ============ */
.df-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--df-font-head);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--df-c-text-sub);
}
.df-breadcrumb a { color: var(--df-c-text-sub); text-decoration: none; transition: color 0.2s ease; }
.df-breadcrumb a:hover { color: var(--df-c-gold-light); }
.df-breadcrumb__sep { color: var(--df-c-gold); opacity: 0.55; }
.df-breadcrumb [aria-current="page"] { color: var(--df-c-gold-light); }

/* ============ 标签与注释 ============ */
.df-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--df-font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--df-c-gold);
  border: 1px solid var(--df-c-border);
  border-radius: 2px;
  padding: 3px 10px;
}

.df-annot {
  writing-mode: vertical-rl;
  font-family: var(--df-font-head);
  font-size: 12px;
  letter-spacing: 0.3em;
  color: var(--df-c-gold);
  opacity: 0.75;
}

/* ============ 状态控制台 ============ */
.df-console {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-family: var(--df-font-head);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--df-c-text-sub);
  background: var(--df-c-glass);
  border: 1px solid var(--df-c-border);
  border-radius: var(--df-radius);
  padding: 14px 20px;
}

.df-console__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-right: 20px;
  margin-right: 20px;
  border-right: 1px solid var(--df-c-border);
}
.df-console__item:last-child { padding-right: 0; margin-right: 0; border-right: 0; }

.df-console__dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--df-c-orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 0, 0.14);
}
.df-console__dot--gold {
  background: var(--df-c-gold);
  box-shadow: 0 0 0 4px rgba(201, 168, 124, 0.16);
}

@media (max-width: 640px) {
  .df-console { padding: 12px 16px; }
  .df-console__item { padding-right: 0; margin-right: 0; border-right: 0; }
}

/* ============ 卡片 ============ */
.df-card {
  position: relative;
  padding: 28px;
  background: var(--df-c-blue-navy);
  border: 1px solid var(--df-c-border);
  border-radius: var(--df-radius);
  transition: border-color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}
.df-card:hover {
  border-color: var(--df-c-gold);
  background: rgba(16, 36, 71, 0.9);
  box-shadow: 0 14px 44px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

.df-card--glass { background: var(--df-c-glass); }
.df-card--glass:hover { background: var(--df-c-glass-strong); }

.df-card__title {
  margin-bottom: 10px;
  font-size: 20px;
}

.df-card__text {
  color: var(--df-c-text-sub);
  font-size: 15px;
}

.df-card__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  font-family: var(--df-font-head);
  font-size: 14px;
  font-weight: 700;
  color: var(--df-c-gold-light);
  text-decoration: none;
}
.df-card__link::after {
  content: "→";
  color: var(--df-c-orange);
  transition: transform 0.25s ease;
}
.df-card__link:hover::after { transform: translateX(4px); }

/* ============ 列表 ============ */
.df-list { display: grid; }

.df-list__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--df-c-border);
}
.df-list__item:first-child { padding-top: 0; }

.df-list__date {
  font-family: var(--df-font-head);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--df-c-gold);
}

.df-list__title { flex: 1 1 240px; }
.df-list__title a {
  font-family: var(--df-font-head);
  font-size: 18px;
  font-weight: 900;
  color: var(--df-c-text);
  text-decoration: none;
  transition: color 0.25s ease;
}
.df-list__title a:hover { color: var(--df-c-gold-light); }

/* ============ 媒体容器 ============ */
.df-media {
  position: relative;
  overflow: hidden;
  background: var(--df-c-blue-navy);
  background-image: linear-gradient(135deg, rgba(201, 168, 124, 0.08), transparent 60%);
  border: 1px solid var(--df-c-border);
  border-radius: 2px;
  aspect-ratio: 16 / 9;
}
.df-media--4-3 { aspect-ratio: 4 / 3; }
.df-media--3-4 { aspect-ratio: 3 / 4; }
.df-media--1-1 { aspect-ratio: 1 / 1; }

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

.df-media__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--df-font-head);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--df-c-text-sub);
  background: linear-gradient(135deg, rgba(201, 168, 124, 0.1), transparent 60%), var(--df-c-blue-navy);
}

/* ============ 内页首屏 ============ */
.df-page-hero {
  padding-top: calc(var(--df-header-h) + 56px);
  padding-bottom: 48px;
  border-bottom: 1px solid var(--df-c-border);
  background: linear-gradient(180deg, rgba(16, 36, 71, 0.5), transparent);
}

.df-page-hero__breadcrumb { margin-bottom: 28px; }

.df-page-hero__title {
  margin-bottom: 12px;
  font-size: clamp(32px, 5vw, 56px);
  letter-spacing: 0.06em;
}

.df-page-hero__desc {
  max-width: 640px;
  color: var(--df-c-text-sub);
  font-size: 16px;
}

/* ============ 跳转链接 ============ */
.skip-link {
  position: fixed;
  top: 0;
  left: var(--df-gutter);
  z-index: 3000;
  padding: 10px 20px;
  background: var(--df-c-gold);
  color: var(--df-c-blue-deep);
  font-family: var(--df-font-head);
  font-size: 14px;
  font-weight: 900;
  text-decoration: none;
  transform: translateY(-130%);
  transition: transform 0.3s ease;
}
.skip-link:hover { color: var(--df-c-blue-deep); text-decoration: none; }
.skip-link:focus { transform: translateY(0); }

/* ============ 滚动进度 ============ */
.df-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  z-index: 2500;
  pointer-events: none;
  background: linear-gradient(90deg, var(--df-c-gold), var(--df-c-orange));
}

/* ============ 站点头部 ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header[data-scrolled="true"] {
  background: rgba(10, 26, 58, 0.92);
  border-bottom-color: var(--df-c-border);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.28);
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: var(--df-container);
  margin-inline: auto;
  height: var(--df-header-h);
  padding-inline: var(--df-gutter);
}

/* 品牌 */
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  text-decoration: none;
  color: #fff;
}
.site-logo:hover { color: #fff; text-decoration: none; }

.site-logo__sigil {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border: 1px solid var(--df-c-gold);
  border-radius: 2px;
  color: var(--df-c-gold);
  transform: rotate(45deg);
}

.site-logo__sigil-inner {
  display: block;
  transform: rotate(-45deg);
  font-family: var(--df-font-head);
  font-size: 16px;
  font-weight: 900;
  line-height: 1;
}

.site-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.site-logo__word {
  font-family: var(--df-font-head);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: #fff;
}
.site-logo__word em { font-style: normal; color: var(--df-c-gold); }

.site-logo__note {
  margin-top: 2px;
  font-family: var(--df-font-head);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.28em;
  color: var(--df-c-text-sub);
}

/* 桌面导航 */
.site-nav { margin-inline: auto; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 6px;
  font-family: var(--df-font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--df-c-text);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}
.site-nav__link:hover { color: var(--df-c-gold-light); text-decoration: none; }

.site-nav__index {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--df-c-gold);
  opacity: 0.75;
}

.site-nav__text { white-space: nowrap; }

.site-nav__link[aria-current="page"] {
  color: var(--df-c-gold-light);
  border-bottom-color: var(--df-c-orange);
}
.site-nav__link[aria-current="page"] .site-nav__index { opacity: 1; }

.site-nav__cta { display: none; }

/* 头部操作区 */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* 移动导航按钮 */
.site-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  font-family: var(--df-font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
  color: var(--df-c-text);
  border: 1px solid var(--df-c-border);
  border-radius: var(--df-radius);
  transition: border-color 0.25s ease, color 0.25s ease, background-color 0.25s ease;
}
.site-nav-toggle:hover {
  border-color: var(--df-c-gold);
  color: var(--df-c-gold-light);
  background: var(--df-c-glass);
}

.site-nav-toggle__icon {
  position: relative;
  display: block;
  width: 18px;
  height: 13px;
  flex-shrink: 0;
}

.site-nav-toggle__bar {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
  transition: transform 0.3s ease, top 0.3s ease;
}
.site-nav-toggle__bar:nth-child(1) { top: 0; }
.site-nav-toggle__bar:nth-child(2) { top: 50%; margin-top: -1px; }

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle__bar:nth-child(2) {
  top: 6px;
  transform: rotate(-45deg);
}

/* 平板 / 移动导航状态 */
@media (max-width: 1023.98px) {
  .site-header__cta { display: none; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0;
    max-height: calc(100vh - var(--df-header-h));
    overflow-y: auto;
    padding: 0 var(--df-gutter) 24px;
    background: rgba(10, 26, 58, 0.97);
    border-bottom: 1px solid var(--df-c-border);
    box-shadow: 0 28px 48px rgba(0, 0, 0, 0.35);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-top: 8px;
  }

  .site-nav__item { border-bottom: 1px solid rgba(201, 168, 124, 0.14); }
  .site-nav__item:last-child { border-bottom: none; }

  .site-nav__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 4px;
    font-size: 16px;
    border-bottom: none;
  }
  .site-nav__link:hover { background: var(--df-c-glass); }

  .site-nav__link .site-nav__text { order: 1; }
  .site-nav__link .site-nav__index { order: 2; }

  .site-nav__link[aria-current="page"] {
    border-bottom: none;
    border-left: 3px solid var(--df-c-orange);
    padding-left: 12px;
  }

  .site-nav__cta {
    display: flex;
    width: 100%;
    margin-top: 20px;
  }

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

/* ============ 站点页脚 ============ */
.site-footer {
  background: var(--df-c-blue-navy);
  border-top: 1px solid var(--df-c-border);
  margin-top: 72px;
}

.site-footer__inner {
  max-width: var(--df-container);
  margin-inline: auto;
  padding-inline: var(--df-gutter);
}

.site-footer__grid {
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(0, 1fr);
  padding: 56px 0 44px;
}
@media (min-width: 640px) {
  .site-footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .site-footer__grid { grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 32px; }
}

.site-footer__logo {
  display: inline-block;
  font-family: var(--df-font-head);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: #fff;
  text-decoration: none;
}
.site-footer__logo:hover { color: #fff; text-decoration: none; }
.site-footer__logo em { font-style: normal; color: var(--df-c-gold-light); }

.site-footer__desc {
  margin-top: 6px;
  font-family: var(--df-font-head);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--df-c-text-sub);
}

.site-footer__trust {
  margin-top: 18px;
  max-width: 360px;
  padding-left: 16px;
  border-left: 2px solid var(--df-c-gold);
  font-size: 13px;
  line-height: 1.8;
  color: var(--df-c-text-sub);
}

.site-footer__heading {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-family: var(--df-font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--df-c-gold);
}
.site-footer__heading::after {
  content: "";
  height: 1px;
  width: 28px;
  background: var(--df-c-border);
}

.site-footer__list { display: grid; gap: 10px; }

.site-footer__link a {
  display: inline-block;
  font-size: 14px;
  color: var(--df-c-text);
  text-decoration: none;
  transition: color 0.25s ease, padding-left 0.25s ease;
}
.site-footer__link a:hover {
  color: var(--df-c-gold-light);
  padding-left: 5px;
}

.site-footer__meta { display: grid; gap: 12px; }
.site-footer__meta li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 13px;
  line-height: 1.7;
  color: var(--df-c-text-sub);
}

.site-footer__label {
  flex-shrink: 0;
  min-width: 3em;
  font-family: var(--df-font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--df-c-gold);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 28px;
  padding: 18px 0 22px;
  border-top: 1px solid rgba(201, 168, 124, 0.16);
  font-family: var(--df-font-head);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--df-c-text-sub);
}

.site-footer__status {
  margin-left: auto;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--df-c-gold);
}

/* ============ 滚动显现 ============ */
html.js-df [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
html.js-df [data-reveal="in"] {
  opacity: 1;
  transform: none;
}

/* ============ 减少动效 ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.001s !important;
    animation-duration: 0.001s !important;
  }
  html.js-df [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}