.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.75rem 1.5rem; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; line-height: 1.2; border: 2px solid transparent; cursor: pointer; transition: all 0.2s; text-align: center; }
.btn--primary { background: var(--color-primary); color: var(--color-white); border-color: var(--color-primary); }
.btn--primary:hover { background: var(--color-secondary); border-color: var(--color-secondary); }
.btn--accent { background: var(--color-accent); color: var(--color-primary); border-color: var(--color-accent); }
.btn--accent:hover { background: #b8973a; border-color: #b8973a; }
.btn--ghost-light { background: transparent; color: var(--color-white); border-color: var(--color-white); }
.btn--ghost-light:hover { background: var(--color-white); color: var(--color-primary); }
.btn--sm { padding: 0.5rem 1rem; font-size: 0.85rem; }
.btn--lg { padding: 1rem 2rem; font-size: 1rem; }
.btn--block { width: 100%; }
.skip-link { position: absolute; top: -100px; left: 0; background: var(--color-accent); color: var(--color-primary); padding: 0.5rem 1rem; z-index: 9999; }
.skip-link:focus { top: 0; }
.site-header { background: var(--color-white); border-bottom: 1px solid #e5e9f0; position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding-top: 0.75rem; padding-bottom: 0.75rem; gap: 1rem; }
.brand__logo { height: 48px; width: auto; }
.nav-desktop { display: none; }
@media (min-width: 1024px) { .nav-desktop { display: block; } }
.nav-desktop__list { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.nav-link { padding: 0.4rem 0.6rem; font-size: 0.85rem; font-weight: 500; color: var(--color-text); border-radius: var(--radius-sm); white-space: nowrap; border-bottom: 2px solid transparent; transition: all 0.2s; }
.nav-link:hover { color: var(--color-primary); background: var(--color-surface); }
.nav-link.is-active { color: var(--color-primary); background: var(--color-surface); border-bottom-color: var(--color-accent); font-weight: 700; }
.mobile-nav__list a.is-active { color: var(--color-primary); font-weight: 700; border-left: 3px solid var(--color-accent); padding-left: 0.75rem; }
.header-actions { display: flex; align-items: center; gap: 0.75rem; }
.lang-switch { position: relative; }
.lang-switch__toggle { display: flex; align-items: center; gap: 0.25rem; background: none; border: 1px solid #ddd; border-radius: var(--radius-sm); padding: 0.35rem 0.6rem; font-size: 0.8rem; cursor: pointer; }
.lang-switch__menu { position: absolute; right: 0; top: calc(100% + 4px); background: var(--color-white); border: 1px solid #ddd; border-radius: var(--radius-sm); min-width: 120px; box-shadow: var(--shadow-md); padding: 0.25rem 0; z-index: 10; }
.lang-switch__menu a { display: block; padding: 0.5rem 1rem; font-size: 0.85rem; }
.lang-switch__menu a:hover, .lang-switch__menu a.is-current { background: var(--color-surface); color: var(--color-primary); }
.nav-toggle { display: flex; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle__bar { width: 22px; height: 2px; background: var(--color-primary); border-radius: 1px; }
@media (min-width: 1024px) { .nav-toggle { display: none; } }
.mobile-nav { background: var(--color-white); border-bottom: 1px solid #e5e9f0; padding: 1rem 1.25rem; }
.mobile-nav__list a { display: block; padding: 0.6rem 0; font-size: 1rem; border-bottom: 1px solid #f0f0f0; }
.mobile-nav__cta { margin-top: 1rem; }
.mobile-nav__lang { display: flex; gap: 1rem; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid #eee; }
.mobile-nav__lang a { font-size: 0.9rem; color: var(--color-text-light); }
.mobile-nav__lang a.is-current { color: var(--color-primary); font-weight: 600; }
.hero { position: relative; display: flex; align-items: center; min-height: 520px; background: var(--color-primary); color: var(--color-white); overflow: hidden; padding: 8rem 0; box-sizing: border-box; }
.hero__media, .hero__media-placeholder { position: absolute; top: 0; right: 0; bottom: 0; left: 0; }
.hero__media-placeholder { background: linear-gradient(135deg, #0a1f44 0%, #1e3a6e 100%); }
.hero__overlay { position: absolute; top: 0; right: 0; bottom: 0; left: 0; background: rgba(10, 31, 68, 0.6); }
.hero__inner { position: relative; z-index: 1; width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 1.25rem; box-sizing: border-box; }
.hero__eyebrow { font-size: 0.85rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 1rem; }
.hero__title { font-size: clamp(1.8rem, 5vw, 3.5rem); line-height: 1.15; font-weight: 700; margin-bottom: 1.25rem; max-width: 900px; min-height: 2.3em; }
.hero__subtitle { font-size: clamp(1rem, 2vw, 1.25rem); max-width: 700px; margin-bottom: 2rem; opacity: 0.9; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }
.card { background: var(--color-white); border-radius: var(--radius-md); padding: 1.5rem; box-shadow: var(--shadow-sm); border: 1px solid #eef1f6; }
.card--flat { box-shadow: none; border: 1px solid #e5e9f0; }
.card__title { font-size: 1.15rem; font-weight: 600; color: var(--color-primary); margin-bottom: 0.5rem; }
.card--feature { text-align: center; padding: 2rem 1.5rem; }
.card--value { text-align: center; padding: 1.5rem; }
.card--program { padding: 1.5rem; }
.region-card { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); border-radius: var(--radius-md); padding: 1.5rem; text-align: center; color: var(--color-white); }
.cta-band { background: var(--color-primary); color: var(--color-white); text-align: center; }
.cta-band__title { font-size: clamp(1.5rem, 3vw, 2.5rem); margin-bottom: 1.5rem; }
.newsletter__form { display: grid; gap: 1rem; margin-top: 1.5rem; }
.form-field { display: flex; flex-direction: column; gap: 0.35rem; }
.form-field--check { flex-direction: row; align-items: center; gap: 0.5rem; }
.form-label { font-size: 0.9rem; font-weight: 500; }
.form-input, .form-select { padding: 0.6rem 0.75rem; border: 1px solid #ccc; border-radius: var(--radius-sm); font-size: 1rem; font-family: inherit; width: 100%; }
.link-arrow { color: var(--color-secondary); font-weight: 600; font-size: 0.95rem; }
.link-arrow::after { content: " →"; }
.link-arrow--light { color: var(--color-accent); }
.site-footer { background: var(--color-dark-bg); color: #ccd6e0; padding: 3rem 0 1.5rem; font-size: 0.9rem; }
.site-footer__grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .site-footer__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .site-footer__grid { grid-template-columns: repeat(4, 1fr); } }
.site-footer__heading { color: var(--color-white); font-size: 0.95rem; margin-bottom: 0.75rem; }
.site-footer__list li { margin-bottom: 0.4rem; }
.site-footer__list a:hover { color: var(--color-accent); }
.site-footer__bottom { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 2rem; padding-top: 1.5rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; }
.site-footer__legal { display: flex; flex-wrap: wrap; gap: 1rem; }
.site-footer__legal a:hover { color: var(--color-accent); }

/* --- 手机端页脚优化 --- */
.site-footer__grid {
  display: grid;
  gap: 1.5rem 1rem;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 640px) {
  .site-footer__grid {
    gap: 2rem;
    grid-template-columns: repeat(4, 1fr);
  }
}
.site-footer { padding: 2.5rem 0 1.25rem; font-size: 0.85rem; }
.site-footer__heading { font-size: 0.9rem; margin-bottom: 0.6rem; }
.site-footer__list li { margin-bottom: 0.35rem; }
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  text-align: center;
}
.site-footer__legal { justify-content: center; gap: 0.75rem; flex-wrap: wrap; }
.site-footer__legal li { font-size: 0.8rem; }
.site-footer__copyright { font-size: 0.8rem; text-align: center; }

/* --- 内页统一头部 (page-hero) --- */
.page-hero {
  background: linear-gradient(135deg, #0a1f44 0%, #1e3a6e 100%);
  color: #fff;
  padding: 4rem 0 3rem;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: -50%; right: -20%;
  width: 60%; height: 200%;
  background: radial-gradient(circle, rgba(201,168,76,0.12) 0%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
}
.page-hero::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #c9a84c 0%, #3a6ea5 50%, #c9a84c 100%);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.15;
  font-weight: 700;
  color: #fff;
  margin: 0.5rem 0 1rem;
}
.page-hero__lead {
  font-size: 1.1rem;
  line-height: 1.6;
  max-width: 700px;
  color: rgba(255,255,255,0.9);
  margin: 0;
}
.page-hero .eyebrow { color: #c9a84c; }

.breadcrumb {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 0.75rem;
}
.breadcrumb a { color: rgba(255,255,255,0.85); text-decoration: none; }
.breadcrumb a:hover { color: #c9a84c; }
.breadcrumb span { margin: 0 0.4rem; opacity: 0.6; }

@media (max-width: 480px) {
  .page-hero { padding: 2.5rem 0 2rem; }
  .page-hero__title { font-size: 1.5rem; }
  .page-hero__lead { font-size: 0.95rem; }
}

/* --- 图片系统 (v1.2) --- */
.media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #e8eef7 0%, #d8e2ef 100%);
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--3x2 { aspect-ratio: 3 / 2; }
.media--1x1 { aspect-ratio: 1 / 1; }

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

/* Hero 背景图 */
.hero__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* 内页 page-hero 支持背景图 */
.page-hero--image {
  background-size: cover;
  background-position: center;
  position: relative;
}
.page-hero--image::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 90% 160% at 20% 50%,
    rgba(10,31,68,0.95) 0%,
    rgba(10,31,68,0.85) 30%,
    rgba(10,31,68,0.55) 55%,
    rgba(10,31,68,0.20) 78%,
    rgba(10,31,68,0) 100%);
  z-index: 0;
}
.page-hero--image .container { position: relative; z-index: 1; }

/* 卡片图片 */
.card--with-image {
  padding: 0;
  overflow: hidden;
}
.card--with-image .media {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.card--with-image .card__body {
  padding: 1.5rem;
}
.card--with-image .icon-circle {
  width: 48px;
  height: 48px;
  margin: -28px 0 1rem 0;
  border: 3px solid #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  position: relative;
  z-index: 2;
}
.card--with-image .icon-circle svg { width: 22px; height: 22px; }

@media (max-width: 480px) {
  .card--with-image .card__body { padding: 1.25rem; }
}

/* 隐藏破图图标 */
.card--with-image img {
  background: none;
}
.card--with-image img:not([src]),
.card--with-image img[src=""],
.card--with-image img[src="#"] {
  display: none;
}
.icon-circle img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* 隐藏破图图标 */
.card--with-image img {
  background: none;
}
.card--with-image img:not([src]),
.card--with-image img[src=""],
.card--with-image img[src="#"] {
  display: none;
}
.icon-circle img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* 隐藏任何加载失败的图片占位 */
img:-moz-broken,
img[alt]:after {
  /* 现代浏览器对破图会自动应用默认占位，用 min-height 过渡 */
  content: "";
}
img {
  /* 让破图占位不那么明显 */
  background-color: transparent;
  font-size: 0;
}
.card--with-image .media img:not([src]),
.card--with-image .media img[src=""],
.card--with-image .media img[src="#"] {
  display: none;
}
/* 强制图标 SVG 可见 */
.icon-circle svg {
  display: block !important;
  width: 28px !important;
  height: 28px !important;
  stroke: currentColor !important;
  stroke-width: 1.75 !important;
  fill: none !important;
}
.card--with-image .icon-circle svg {
  width: 22px !important;
  height: 22px !important;
}

/* === 图标渲染保障 === */
.icon-circle {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  background-color: #0a1f44 !important;
  background-image: linear-gradient(135deg, #0a1f44 0%, #1e3a6e 100%) !important;
  color: #ffffff !important;
  border-radius: 50% !important;
  overflow: hidden !important;
}
.icon-circle svg {
  display: block !important;
  width: 28px !important;
  height: 28px !important;
  stroke: #ffffff !important;
  stroke-width: 1.75 !important;
  fill: none !important;
  visibility: visible !important;
  opacity: 1 !important;
}
.icon-circle img {
  display: none !important; /* 万一旧版 HTML 残留 <img>，直接隐藏 */
}

/* 卡片图标版：跨图片边界 */
.card--with-image .icon-circle {
  width: 48px !important;
  height: 48px !important;
  margin: -28px 0 1rem 0 !important;
  border: 3px solid #ffffff !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.12) !important;
  position: relative !important;
  z-index: 2 !important;
}
.card--with-image .icon-circle svg {
  width: 22px !important;
  height: 22px !important;
}