@charset "utf-8";
/* home.css · 首页内容和布局 */

body {
  --maxw: 1100px;
}

.hero {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  min-height: clamp(560px, 86svh, 900px);
  padding-block-start: 96px;
  padding-block-end: var(--s-9);
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-block-end: var(--s-5);
  color: var(--fg-2);
}

.hero__eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}

.hero__eyebrow--empty {
  visibility: hidden;
}

.hero__title {
  font-size: clamp(16px, 3.4vw, 40px);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.hero__title .line {
  display: block;
  white-space: nowrap;
  overflow: hidden;
  padding-block-end: 0.1em;
  margin-block-end: -0.1em;
}

.hero__title .line__i {
  display: block;
  will-change: translate;
}

.hero__title .line--2 {
  padding-inline-start: 0.12em;
}

.hero__lede {
  margin-block-start: var(--s-5);
  max-width: 34em;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.75;
  color: var(--fg-2);
}

.hero__source {
  margin-block-start: var(--s-4);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  line-height: 1.7;
  letter-spacing: 0.04em;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  margin-block-start: var(--s-6);
}

.section--portals {
  position: relative;
  z-index: 1;
}

.portals {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--s-4);
  margin-block-start: var(--s-6);
}

.portal-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  min-height: 250px;
  padding: var(--s-6);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
  transition:
    border-color 0.35s var(--ease),
    background-color 0.35s var(--ease);
}

.portal-card > * {
  position: relative;
  z-index: 1;
}

.portal-card:hover,
.portal-card:focus-visible {
  border-color: var(--accent);
  background: var(--bg);
}

.portal-card__kicker {
  color: var(--fg-2);
}

.portal-card__name {
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.portal-card__desc {
  max-width: 26em;
  font-size: var(--fs-small);
  line-height: 1.75;
  color: var(--fg-2);
}

.portal-card__foot {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  margin-block-start: auto;
  padding-block-start: var(--s-4);
}

.portal-card__url {
  color: var(--fg-2);
}

.portal-card__arrow {
  font-size: 16px;
  line-height: 1;
  color: var(--fg-3);
  transition:
    color 0.3s var(--ease),
    translate 0.3s var(--ease);
}

.portal-card:hover .portal-card__arrow,
.portal-card:focus-visible .portal-card__arrow {
  color: var(--accent);
  translate: 4px 0;
}

.section--writing {
  position: relative;
  z-index: 1;
}

@media (max-width: 720px) {
  .portals {
    grid-template-columns: minmax(0, 1fr);
  }

  .portal-card {
    min-height: 0;
  }
}

@media (max-width: 380px) {
  .hero {
    padding-block-start: 88px;
  }
}