/* ==========================================================================
   组件（Components）
   ========================================================================== */

/* 品牌标识 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.brand__mark {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffffff, var(--color-accent-blue) 45%, var(--color-accent-purple) 100%);
  box-shadow: 0 0 14px rgba(109, 149, 255, 0.8);
}

/* 主标题 */
.hero__eyebrow {
  display: inline-block;
  margin-bottom: 22px;
  padding: 6px 16px;
  border-radius: 999px;
  color: var(--color-accent-cyan);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.18em;
  background: rgba(100, 210, 255, 0.1);
  border: 1px solid rgba(100, 210, 255, 0.28);
}

.hero__title {
  font-size: clamp(2.6rem, 8vw, 5.6rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

.hero__title-gradient {
  background: linear-gradient(120deg, var(--color-accent-cyan) 0%, var(--color-accent-blue) 45%, var(--color-accent-purple) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero__subtitle {
  max-width: 560px;
  margin: 26px auto 0;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 40px;
}

/* 按钮 */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: transform 0.3s var(--ease-out), background-color 0.3s var(--ease-out),
    box-shadow 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.button--primary {
  color: #fff;
  background: linear-gradient(120deg, var(--color-accent-blue), var(--color-accent-purple));
  box-shadow: 0 8px 26px rgba(90, 110, 255, 0.3);
}

.button--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(90, 110, 255, 0.42);
}

.button--ghost {
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.button--ghost:hover {
  transform: translateY(-2px);
  background: var(--color-surface-hover);
}

/* 章节标题 */
.section__title {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.section__lede {
  margin-top: 16px;
  font-size: 1.125rem;
  color: var(--color-text-secondary);
}

/* 卡片 */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  padding: 36px 30px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform 0.4s var(--ease-out), background-color 0.4s var(--ease-out),
    border-color 0.4s var(--ease-out);
}

.card:hover {
  transform: translateY(-6px);
  background: var(--color-surface-hover);
  border-color: rgba(255, 255, 255, 0.22);
}

.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 22px;
  border-radius: 16px;
  color: #fff;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.35);
}

.card__icon--blue {
  background: linear-gradient(135deg, #2f80ff, #4da6ff);
}

.card__icon--purple {
  background: linear-gradient(135deg, #a855f7, #c77dff);
}

.card__icon--cyan {
  background: linear-gradient(135deg, #22b8cf, #64d2ff);
}

.card__title {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.card__text {
  color: var(--color-text-secondary);
}

/* 愿景引用 */
.vision__text {
  font-size: clamp(1.6rem, 4.5vw, 2.9rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

.vision__cite {
  display: block;
  margin-top: 22px;
  font-style: normal;
  font-size: 1rem;
  color: var(--color-text-tertiary);
}

/* 页脚备案链接 */
.footer__link {
  font-size: 13px;
  color: var(--color-text-tertiary);
  transition: color 0.3s var(--ease-out);
}

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