/* VISUAL REFINE · 公共页面统一的排版与节奏层（最后加载）
   只收敛尺寸、间距、边框和装饰强度，不改变内容、结构或交互：
   - 首页各分区使用同一内容宽度、同一上下间距和同一级标题；
   - 子页标题回到正常标题尺寸，Hero 级字号只留给首页 Hero；
   - 去掉卡片套卡片、分类色竖条、倾斜叠放等过度装饰。 */

.public-observatory-shell {
  --refine-measure: 1180px;
  --refine-gutter: max(20px, calc((100% - var(--refine-measure)) / 2));
  --refine-block: clamp(80px, 9vw, 120px);
}

/* ---------- 首页：统一分区宽度与节奏 ---------- */
.public-observatory-shell :is(.about, .journal, .guestbook, .friends, .platform-section) {
  padding: var(--refine-block) var(--refine-gutter);
}
.public-observatory-shell .friends { min-height: 0; }
.public-observatory-shell .friends-inner { width: 100%; }

/* 分区标题：一个尺寸、一个间距；分区本身的顶部细线承担分隔 */
.public-observatory-shell .section-heading,
.public-observatory-shell .platform-section .section-heading,
.public-observatory-shell .collection-section .section-heading { margin-bottom: 36px; align-items: center; }
.public-observatory-shell :is(.section-heading h2, .guestbook-intro h2) {
  font-size: clamp(26px, 2.6vw, 34px);
  line-height: 1.25;
  letter-spacing: .04em;
}
.public-observatory-shell .about-copy h2 {
  font-size: clamp(28px, 3.1vw, 40px);
  line-height: 1.3;
}
.public-observatory-shell .about-copy > p:not(.eyebrow),
.public-observatory-shell .about-copy .free-rich-text { line-height: 1.9; }

/* 关于：肖像不再是“卡片里的卡片” */
.public-observatory-shell .about-portrait {
  padding: 0 0 30px;
  border: 0;
  background: transparent;
  clip-path: none;
}
.public-observatory-shell .about-portrait img { border: 1px solid var(--line); }
.public-observatory-shell .about-portrait > span,
.public-observatory-shell .about-gallery-status { bottom: 6px; }
.public-observatory-shell .about-portrait > span { left: 0; }
.public-observatory-shell .about-gallery-status { right: 0; }
.public-observatory-shell .about-copy .free-details {
  background: transparent;
  border-width: 0 0 1px;
  border-color: var(--line-strong);
}

/* ---------- 手记列表：去掉卡片底板与分类竖条，改为分隔线列表 ---------- */
.public-observatory-shell .post-grid { gap: 0; }
.public-observatory-shell .post-card {
  grid-template-columns: minmax(220px, 320px) minmax(0, 1fr);
  gap: 0 clamp(24px, 3.4vw, 44px);
  padding: 28px 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  clip-path: none;
}
.public-observatory-shell .post-grid > .post-card:first-child { border-top: 1px solid var(--line); }
.public-observatory-shell .post-card::before { content: none; }
.public-observatory-shell .post-card:hover { border-color: var(--line); box-shadow: none; }
.public-observatory-shell .post-card:hover h3,
.public-observatory-shell .post-card:focus-within h3 { color: var(--signal-text); }
.public-observatory-shell .post-card h3 { font-size: clamp(20px, 1.9vw, 25px); transition: color .3s var(--ease-out); }
.public-observatory-shell .post-image {
  align-self: start;
  min-height: 0;
  aspect-ratio: 16 / 9;
  border: 0;
  background: var(--panel);
}
.public-observatory-shell .post-card:hover .post-image img { transform: scale(1.025); }
.public-observatory-shell .read-link {
  width: auto;
  margin-top: 16px;
  padding-top: 0;
  border-top: 0;
  font: 500 12px/1 var(--font-sans);
  letter-spacing: .08em;
}

/* 分类筛选：去掉每颗按钮的边框，改为下划线指示 */
.public-observatory-shell .filter-row { gap: 4px 18px; }
.public-observatory-shell .filter-chip {
  padding: 6px 0;
  border: 0;
  border-bottom: 1px solid transparent;
  background: transparent;
  clip-path: none;
  box-shadow: none;
}
.public-observatory-shell .filter-chip.is-active {
  border-bottom-color: var(--signal-text);
  background: transparent;
  box-shadow: none;
}

/* ---------- 收藏：3D 房间不再包在空框里 ---------- */
.public-observatory-shell .collection-band { border-block: 0; }
.public-observatory-shell .collection-room .room-stage { border-color: transparent; }

/* ---------- 子页标题：正常标题尺寸 ---------- */
.public-observatory-shell .archive-page { padding-top: calc(var(--header-h) + 80px); }
.public-observatory-shell .archive-hero { padding-bottom: 32px; }
.public-observatory-shell .archive-hero h1,
.public-observatory-shell .changelog-hero h1 {
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: .04em;
}
.public-observatory-shell .archive-hero::after { box-shadow: none; width: 48px; }

/* 手记归档：图上文下的两列网格，标题不再挤在窄栏里 */
.public-observatory-shell .archive-grid { gap: 56px clamp(28px, 4vw, 56px); }
.public-observatory-shell .archive-card {
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  padding: 0 0 28px;
  border-bottom: 1px solid var(--line);
}
.public-observatory-shell .archive-grid > .post-card:first-child { border-top: 0; }
.public-observatory-shell .archive-card::before,
.public-observatory-shell .archive-card::after { content: none; }
.public-observatory-shell .archive-card .post-image {
  grid-row: auto;
  margin-bottom: 20px;
}
.public-observatory-shell .archive-card h2 {
  margin: 10px 0 8px;
  font-size: clamp(20px, 1.8vw, 24px);
}
.public-observatory-shell .archive-card > p { margin-bottom: 14px; font-size: 13.5px; }

/* ---------- 更新记录：当前版本只用节点颜色标示 ---------- */
.public-observatory-shell .changelog-page { padding-top: calc(var(--header-h) + 80px); }
.public-observatory-shell .changelog-hero { padding-bottom: 36px; }
.public-observatory-shell .changelog-entry.is-current { background: none; }
.public-observatory-shell .changelog-entry.is-current::before { animation: none; box-shadow: none; }
/* 只改上下留白：左右留白归 obs-pages.css 管，窄屏要靠它把文字让出时间线。 */
.public-observatory-shell .changelog-entry { min-height: 0; padding-block: 24px 30px; }
.public-observatory-shell .changelog-entry h2 {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.75;
}
.public-observatory-shell .changelog-entry.generated-entry { padding-block: 18px 22px; }
.public-observatory-shell .changelog-entry.is-same-day { padding-top: 2px; }
.public-observatory-shell .changelog-entry:has(+ .is-same-day) { padding-bottom: 14px; }
.public-observatory-shell .changelog-entry.generated-entry h2 { font-size: 15px; }
.public-observatory-shell .changelog-entry header strong { font-size: 17px; }
.public-observatory-shell .changelog-timeline::before { background: var(--line-strong); }

/* ---------- 实验室：样片叠放收敛为轻微错位 ---------- */
.public-observatory-shell .lab-directory h1 { font-size: clamp(30px, 3.4vw, 40px); letter-spacing: .06em; }
.public-observatory-shell .lab-category h2 { font-size: 24px; }
.public-observatory-shell .lab-proof-sheet[data-depth="2"] { transform: translate(-4%, -8%) rotate(-2.5deg) scale(.92); opacity: .32; }
.public-observatory-shell .lab-proof-sheet[data-depth="1"] { transform: translate(3%, -5%) rotate(1.5deg) scale(.96); opacity: .55; }
.public-observatory-shell .lab-proof-sheet[data-depth="0"] { transform: translateY(4%); }
.public-observatory-shell .lab-catalog-stage:hover,
.public-observatory-shell .lab-catalog-stage:focus-visible { transform: translateY(2%); }

@media (max-width: 760px) {
  .public-observatory-shell :is(.about, .journal, .guestbook, .friends, .platform-section) { padding-block: 64px; }
  .public-observatory-shell .section-heading { margin-bottom: 26px; }
  .public-observatory-shell .post-card { grid-template-columns: 1fr; gap: 16px; padding: 22px 0; }
  .public-observatory-shell .archive-page,
  .public-observatory-shell .changelog-page { padding-top: calc(var(--header-h) + 48px); }
}
@media (prefers-reduced-motion: reduce) {
  .public-observatory-shell .lab-catalog-stage:hover,
  .public-observatory-shell .lab-catalog-stage:focus-visible { transform: translateY(4%); }
}

/* 造物：标题下不再额外加一条分隔线，与其他分区一致 */
.public-observatory-shell .project-dossier-list { border-top: 0; }
html[data-theme="light"] .public-observatory-shell .filter-chip.is-active { background: transparent; box-shadow: none; }