/* ==========================================================================
   HUMAN ARTIFACTS · 太阳系人类造物图谱
   solar3 / static edition — design system + layout
   ========================================================================== */

/* ---------- fonts (bundled, no external requests) ---------- */
@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/ibm-plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+2000-206F, U+20A0-20BF, U+2190-21FF, U+2200-22FF;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("../fonts/ibm-plex-mono-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+2000-206F, U+20A0-20BF, U+2190-21FF, U+2200-22FF;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-300.woff2") format("woff2");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ---------- tokens ---------- */
:root {
  --ink: #0a0a09;
  --ink-2: #0e0e0d;
  --ink-3: #131312;
  --paper: #e8e2d6;
  --paper-dim: #b9b2a4;
  --mute: #7d7a70;
  --line: #26251f;
  --line-2: #34342f;
  --gold: #c58a55;
  --gold-dim: #8e6540;
  --cyan: #74b7c2;
  --rust: #9a5c4c;

  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-sans: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", system-ui, sans-serif;

  --wrap: 1280px;
  --pad: clamp(18px, 4vw, 56px);
  --section-y: clamp(64px, 9vw, 132px);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: clamp(15px, 0.42vw + 14px, 17px);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img,
canvas,
svg {
  display: block;
  max-width: 100%;
}
img {
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}
h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
figure,
blockquote {
  margin: 0;
}
ul,
ol {
  padding: 0;
  list-style: none;
}
strong {
  font-weight: 500;
  color: var(--paper);
}
::selection {
  background: var(--gold);
  color: var(--ink);
}
:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- shared primitives ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}
.skip {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  transition: top 0.2s var(--ease);
}
.skip:focus {
  top: 12px;
}
.hairline {
  border-top: 1px solid var(--line);
}
.label,
.section-num,
.kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mute);
}
.kicker {
  color: var(--gold);
}
.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
.cn {
  color: var(--paper);
}
.en {
  color: var(--paper-dim);
  font-family: var(--font-mono);
  font-size: 0.82em;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.no-js .js-only {
  display: none;
}

/* arrow link */
.link-arrow {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  border-bottom: 1px solid var(--gold-dim);
  padding-bottom: 4px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.link-arrow::after {
  content: "→";
  font-size: 14px;
  line-height: 1;
  transition: transform 0.25s var(--ease);
}
.link-arrow:hover {
  color: var(--paper);
  border-color: var(--paper);
}
.link-arrow:hover::after {
  transform: translateX(4px);
}
.link-arrow--quiet {
  color: var(--paper-dim);
  border-color: var(--line-2);
}
.link-arrow--quiet:hover {
  color: var(--gold);
  border-color: var(--gold-dim);
}
/* 首屏主行动：实心铜金按钮 */
.link-arrow--solid {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
  padding: 11px 18px;
  padding-bottom: 11px;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}
.link-arrow--solid::after {
  color: var(--ink);
}
.link-arrow--solid:hover {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
}

/* ---------- header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--ink) 82%, transparent);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 66px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 0;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: var(--gold);
}
.brand-text {
  display: grid;
  gap: 2px;
  line-height: 1.1;
}
.brand-en {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--paper);
}
.brand-cn {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--mute);
}
.nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.4vw, 34px);
}
.nav a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 6px 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--paper-dim);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.nav-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--mute);
}
.nav a:hover {
  color: var(--paper);
}
body[data-nav="atlas"] .nav a[data-nav="atlas"],
body[data-nav="archive"] .nav a[data-nav="archive"],
body[data-nav="planets"] .nav a[data-nav="planets"],
body[data-nav="timeline"] .nav a[data-nav="timeline"],
body[data-nav="about"] .nav a[data-nav="about"] {
  color: var(--gold);
  border-color: var(--gold-dim);
}
body[data-nav="atlas"] .nav a[data-nav="atlas"] .nav-num,
body[data-nav="archive"] .nav a[data-nav="archive"] .nav-num,
body[data-nav="planets"] .nav a[data-nav="planets"] .nav-num,
body[data-nav="timeline"] .nav a[data-nav="timeline"] .nav-num,
body[data-nav="about"] .nav a[data-nav="about"] .nav-num {
  color: var(--gold);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  padding-top: 66px;
  padding-bottom: clamp(40px, 8vh, 96px);
  overflow: hidden;
  background: var(--ink);
}
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.9;
}
.hero-veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 80% at 12% 78%, rgba(10, 10, 9, 0.94) 0%, rgba(10, 10, 9, 0.6) 38%, rgba(10, 10, 9, 0) 72%),
    linear-gradient(180deg, rgba(10, 10, 9, 0.86) 0%, rgba(10, 10, 9, 0) 26%, rgba(10, 10, 9, 0.55) 88%, var(--ink) 100%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  width: 100%;
}
.hero-copy {
  max-width: 860px;
}
.hero-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: clamp(18px, 3vh, 30px);
}
.hero-title {
  display: grid;
  gap: clamp(6px, 1.2vh, 14px);
  margin-bottom: clamp(22px, 4vh, 40px);
}
.hero-title-cn {
  font-size: clamp(3.4rem, 9.2vw, 8.6rem);
  font-weight: 300;
  line-height: 0.98;
  letter-spacing: 0.02em;
  color: var(--paper);
}
.hero-title-en {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 1.7vw, 1.5rem);
  font-weight: 400;
  letter-spacing: 0.42em;
  color: var(--gold);
}
.hero-title-sub {
  font-size: clamp(0.82rem, 1.1vw, 0.95rem);
  letter-spacing: 0.14em;
  color: var(--mute);
}
.hero-lead {
  max-width: 56ch;
  font-size: clamp(0.98rem, 1.05vw, 1.1rem);
  line-height: 1.85;
  color: var(--paper-dim);
  margin-bottom: clamp(26px, 4vh, 44px);
}
.hero-lead strong {
  color: var(--paper);
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 3vw, 48px);
  padding-top: clamp(16px, 2.4vh, 26px);
  border-top: 1px solid var(--line);
  margin-bottom: clamp(24px, 4vh, 40px);
}
.hero-meta-item {
  display: grid;
  gap: 2px;
}
.hero-meta-item .num {
  font-size: clamp(1.35rem, 2.2vw, 1.9rem);
  color: var(--paper);
  line-height: 1.1;
}
.hero-meta-item span:last-child {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mute);
  text-transform: uppercase;
  font-family: var(--font-mono);
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 3vw, 34px);
}
.scroll-cue {
  display: grid;
  justify-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--mute);
  writing-mode: vertical-rl;
  padding-bottom: 8px;
}
.scroll-cue-line {
  width: 1px;
  height: 62px;
  background: linear-gradient(180deg, var(--gold) 0%, transparent 100%);
  animation: cue 2.6s var(--ease) infinite;
}
@keyframes cue {
  0%,
  100% {
    transform: scaleY(0.35);
    opacity: 0.4;
  }
  50% {
    transform: scaleY(1);
    opacity: 1;
  }
}

/* ---------- sections ---------- */
.section {
  position: relative;
  padding-block: var(--section-y);
  border-top: 1px solid var(--line);
}
.section:first-of-type {
  border-top: 0;
}
.section--ruled::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-2) 22%, var(--line-2) 78%, transparent);
}
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(16px, 3vw, 48px);
  align-items: end;
  padding-bottom: clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(28px, 4.5vw, 56px);
}
.section-num {
  grid-column: 1 / -1;
  margin-bottom: 10px;
}
.section-title {
  font-size: clamp(1.7rem, 3.4vw, 3rem);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: 0.01em;
}
.section-note,
.section-lead {
  max-width: 46ch;
  color: var(--paper-dim);
  font-size: 0.94rem;
  line-height: 1.85;
}
.section-lead {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4vw, 46px);
}
.section-more {
  margin-top: clamp(24px, 3.4vw, 40px);
}
.about-teaser {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.7fr);
  gap: clamp(24px, 5vw, 80px);
  align-items: start;
}
.about-teaser-main .prose {
  margin-top: 22px;
}
.about-teaser-side {
  display: grid;
  gap: 6px;
  padding-left: clamp(0px, 2vw, 34px);
  border-left: 1px solid var(--line);
  align-content: start;
}
.about-teaser-side .label {
  margin-top: 18px;
}
.about-teaser-side .label:first-child {
  margin-top: 0;
}
.about-author {
  font-size: 1.15rem;
  letter-spacing: 0.04em;
}

/* ---------- 三维图谱（首页内嵌 iframe） ---------- */
.section--atlas {
  border-top: 0;
  padding-top: clamp(40px, 6vw, 72px);
}
.atlas-frame {
  border: 1px solid var(--line-2);
  background: #050504;
  overflow: hidden;
}
.atlas-frame__screen {
  position: relative;
  height: clamp(420px, 64vh, 760px);
  background: #050504;
}
.atlas-frame__iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
}
.atlas-frame__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 16px;
  background:
    radial-gradient(60% 60% at 50% 42%, rgba(197, 138, 85, 0.08) 0%, rgba(197, 138, 85, 0) 70%),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(232, 226, 214, 0.035) 39px 40px),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(232, 226, 214, 0.035) 39px 40px),
    #070706;
  transition: opacity 0.6s var(--ease);
  cursor: pointer;
}
.atlas-frame__screen.is-ready .atlas-frame__placeholder {
  opacity: 0;
  pointer-events: none;
}
.atlas-frame__ring {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 1px solid rgba(197, 138, 85, 0.45);
  border-top-color: var(--paper);
  animation: atlas-spin 1.6s linear infinite;
}
@keyframes atlas-spin {
  to {
    transform: rotate(360deg);
  }
}
.atlas-frame__loading-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--mute);
}
.atlas-frame__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  background: var(--ink-2);
}
.atlas-frame__hint {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}
.atlas-frame__bar .link-arrow {
  border-bottom: 0;
  padding-bottom: 0;
}
@media (max-width: 760px) {
  .atlas-frame__screen {
    height: 58vh;
    min-height: 340px;
  }
  .atlas-frame__hint {
    display: none;
  }
}

/* ---------- stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.stat {
  padding: clamp(18px, 2.6vw, 30px) clamp(14px, 2vw, 26px) clamp(18px, 2.6vw, 28px) 0;
  border-right: 1px solid var(--line);
}
.stat:last-child {
  border-right: 0;
}
.stat-value {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3.2vw, 2.6rem);
  line-height: 1;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  margin-bottom: 12px;
}
.stat-label {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
  font-family: var(--font-mono);
}
.stat-note {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--paper-dim);
}

/* ---------- distance ruler ---------- */
.ruler {
  position: relative;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.014), rgba(255, 255, 255, 0) 40%),
    var(--ink-2);
  padding: clamp(16px, 2.4vw, 26px);
}
.ruler-canvas {
  width: 100%;
  height: clamp(150px, 22vw, 230px);
}
.ruler-axis {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.ruler-tick-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--mute);
  text-transform: uppercase;
}
.ruler-legend {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0 clamp(18px, 3vw, 40px);
  margin-top: clamp(22px, 3vw, 34px);
}
.ruler-legend li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}
.ruler-legend li a {
  color: var(--paper-dim);
  transition: color 0.2s var(--ease);
}
.ruler-legend li a:hover {
  color: var(--gold);
}
.ruler-legend li .num {
  font-size: 11px;
  color: var(--mute);
  white-space: nowrap;
}
.ruler-legend li[data-kind="planet"] .num {
  color: var(--cyan);
}
.ruler-hint {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--mute);
  text-transform: uppercase;
}
.ruler-tip {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 3;
  margin: -34px 0 0 -6px;
  padding: 5px 9px;
  background: #efe8da;
  color: #12120f;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.18s var(--ease);
}
.ruler-tip.is-on {
  opacity: 1;
}
@media (max-width: 760px) {
  .ruler-tip {
    display: none;
  }
}

/* ---------- cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--ink);
  min-height: 100%;
  transition: background 0.3s var(--ease);
}
.card:hover {
  background: var(--ink-3);
}
.card-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: radial-gradient(70% 70% at 30% 20%, #1b1b18 0%, #0c0c0b 70%);
  border-bottom: 1px solid var(--line);
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.55) contrast(1.06) brightness(0.86);
  transition: filter 0.5s var(--ease), transform 0.7s var(--ease);
}
.card:hover .card-media img {
  filter: grayscale(0.05) contrast(1.02) brightness(0.98);
  transform: scale(1.03);
}
.card-media--empty::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(232, 226, 214, 0.045) 39px 40px),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(232, 226, 214, 0.045) 39px 40px);
}
.card-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(16px, 2vw, 24px);
  flex: 1;
}
.card-idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 4px;
}
.card-title {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  color: var(--paper);
  text-transform: uppercase;
  line-height: 1.3;
}
.card-cn {
  font-size: 0.9rem;
  color: var(--paper-dim);
  letter-spacing: 0.06em;
}
.card-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--mute);
  text-transform: uppercase;
  margin-top: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-sum {
  margin-top: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--mute);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- tags ---------- */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-dim);
  border: 1px solid var(--line-2);
  padding: 3px 8px;
}

/* ---------- archive ---------- */
.archive {
  display: grid;
  gap: 0;
}
.filters {
  display: grid;
  gap: 14px;
  padding-bottom: clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--line-2);
  margin-bottom: 8px;
}
.filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.filter-row > .label {
  min-width: 84px;
}
/* 机构这类条目多的筛选行：单行横向滚动，避免铺满三行 */
.filter-row--scroll {
  flex-wrap: nowrap;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
  -webkit-overflow-scrolling: touch;
}
.filter-row--scroll .chip {
  flex: 0 0 auto;
}
.filter-row--scroll > .label {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--ink);
  padding-right: 8px;
  flex: 0 0 auto;
}
.chip {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-dim);
  border: 1px solid var(--line-2);
  padding: 6px 11px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.chip:hover {
  color: var(--paper);
  border-color: var(--mute);
}
.chip[aria-pressed="true"] {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
}
.search {
  width: 100%;
  max-width: 420px;
  background: transparent;
  border: 1px solid var(--line-2);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 10px 12px;
}
.search::placeholder {
  color: var(--mute);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.search:focus {
  border-color: var(--gold);
  outline: none;
}
.archive-count {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mute);
  text-transform: uppercase;
}
.entries {
  border-top: 1px solid var(--line);
}
.entry {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) auto;
  gap: clamp(10px, 2vw, 28px);
  align-items: baseline;
  padding: clamp(14px, 1.8vw, 20px) 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s var(--ease), padding-left 0.2s var(--ease);
}
a.entry:hover {
  background: var(--ink-3);
  padding-left: 10px;
}
.entry-idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--mute);
  font-variant-numeric: tabular-nums;
}
.entry-main {
  display: grid;
  gap: 3px;
  min-width: 0;
}
.entry-title {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--paper);
  line-height: 1.35;
}
.entry-cn {
  font-size: 0.85rem;
  color: var(--paper-dim);
  letter-spacing: 0.06em;
}
.entry-sub {
  font-size: 0.82rem;
  color: var(--mute);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.entry-meta {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--mute);
  text-transform: uppercase;
  white-space: nowrap;
}
.entry-meta .num {
  color: var(--paper-dim);
}
.empty {
  padding: 40px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mute);
  text-transform: uppercase;
}
.archive-group {
  margin-top: clamp(30px, 4vw, 52px);
}
.archive-group:first-of-type {
  margin-top: 0;
}
.archive-group > h2 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 400;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-2);
  margin-bottom: 2px;
}

/* ---------- detail page ---------- */
.detail {
  padding-top: clamp(96px, 12vh, 140px);
  padding-bottom: var(--section-y);
}
.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: clamp(26px, 4vw, 46px);
}
.crumbs a:hover {
  color: var(--gold);
}
.crumbs span[aria-hidden] {
  color: var(--line-2);
}
.detail-head {
  display: grid;
  gap: 14px;
  padding-bottom: clamp(26px, 4vw, 42px);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(28px, 4vw, 48px);
}
.detail-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}
.detail-title {
  font-size: clamp(2rem, 5.2vw, 4.2rem);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.detail-cn {
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
  color: var(--paper-dim);
  letter-spacing: 0.1em;
}
.detail-lede {
  max-width: 62ch;
  font-size: clamp(1rem, 1.15vw, 1.14rem);
  line-height: 1.86;
  color: var(--paper-dim);
  margin-top: 6px;
}
.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}
.detail-main {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  min-width: 0;
}
.detail-aside {
  display: grid;
  gap: 24px;
  align-content: start;
  position: sticky;
  top: 96px;
}
.media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-2);
}
.media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: grayscale(0.35) contrast(1.04);
}
.media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}
.prose {
  max-width: 68ch;
  display: grid;
  gap: 1.1em;
  color: var(--paper-dim);
  font-size: 0.98rem;
  line-height: 1.9;
}
.prose p strong {
  color: var(--paper);
}
.prose a {
  color: var(--gold);
  border-bottom: 1px solid var(--gold-dim);
}
.spec-table {
  margin: 0;
  border-top: 1px solid var(--line-2);
}
.spec-table > div {
  display: grid;
  grid-template-columns: minmax(90px, 0.6fr) minmax(0, 1.4fr);
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}
.spec-table dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
  padding-top: 3px;
}
.spec-table dd {
  margin: 0;
  font-size: 0.9rem;
  color: var(--paper);
}
.timeline {
  display: grid;
  gap: 0;
  border-left: 1px solid var(--line-2);
  margin-left: 4px;
}
.tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 18px;
  padding: 0 0 18px 22px;
}
.tl-item::before {
  content: "";
  position: absolute;
  left: -3.5px;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--ink);
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}
.tl-date {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--gold);
  padding-top: 2px;
}
.tl-text {
  font-size: 0.9rem;
  color: var(--paper-dim);
  line-height: 1.7;
}
.tl-text .en {
  display: block;
  margin-top: 2px;
  font-size: 0.78rem;
  color: var(--mute);
}
.sources {
  display: grid;
  gap: 8px;
  font-size: 0.84rem;
}
.sources h3 {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mute);
  font-weight: 400;
}
.sources li a {
  color: var(--paper-dim);
  border-bottom: 1px solid var(--line-2);
}
.sources li a:hover {
  color: var(--gold);
  border-color: var(--gold-dim);
}
.related {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-2);
}
.related-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-dim);
  transition: color 0.2s var(--ease);
}
.related-link:hover {
  color: var(--gold);
}
.related-title {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 12px;
}

/* ---------- planets ---------- */
.planet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(238px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.planet-card {
  position: relative;
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--ink);
  min-height: 300px;
  transition: background 0.3s var(--ease);
}
.planet-card:hover {
  background: var(--ink-3);
}
.orb {
  position: relative;
  overflow: hidden;
  width: clamp(76px, 9vw, 104px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0) 34%),
    radial-gradient(circle at 68% 74%, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0, 0) 62%),
    radial-gradient(circle at 38% 34%, var(--c1, #8f8d86) 0%, var(--c2, #2b2925) 78%);
  box-shadow:
    inset -14px -10px 26px rgba(0, 0, 0, 0.62),
    inset 8px 8px 20px rgba(255, 255, 255, 0.06),
    0 0 0 1px rgba(232, 226, 214, 0.06);
  margin-bottom: 6px;
}
/* 真实贴图球：.orb--tex 内放一张 <img>，避免 CSS 自定义属性里的 url() 相对路径解析歧义 */
.orb--tex {
  background: #111;
  box-shadow:
    0 0 0 1px rgba(232, 226, 214, 0.06),
    0 18px 44px rgba(0, 0, 0, 0.48);
}
.orb--tex > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.orb--tex::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 24%, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0) 42%),
    radial-gradient(circle at 74% 80%, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0) 76%);
  box-shadow:
    inset -10px -8px 26px rgba(0, 0, 0, 0.34),
    inset 9px 9px 22px rgba(255, 255, 255, 0.05);
}
.orb--tex.orb--lg {
  width: clamp(160px, 20vw, 260px);
}
.orb--lg {
  width: clamp(140px, 18vw, 240px);
}
.planet-name {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.planet-cn {
  font-size: 0.86rem;
  color: var(--paper-dim);
  letter-spacing: 0.1em;
}
.planet-stat {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
  border-top: 1px solid var(--line-2);
  padding-top: 8px;
  margin-top: auto;
}
.planet-stat .num {
  color: var(--paper-dim);
}
.planet-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(26px, 5vw, 72px);
  align-items: center;
  padding-bottom: clamp(30px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(30px, 4vw, 52px);
}
.planet-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: clamp(22px, 3vw, 34px);
}
.planet-facts > div {
  background: var(--ink);
  padding: 14px 16px;
  display: grid;
  gap: 4px;
}
.planet-facts dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}
.planet-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--paper);
}
.planet-objects {
  margin-top: clamp(30px, 4vw, 48px);
}

/* ---------- timeline ---------- */
.decades {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.decade {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) auto;
  gap: clamp(14px, 2.4vw, 32px);
  align-items: baseline;
  padding: clamp(14px, 1.8vw, 20px) 0;
  border-bottom: 1px solid var(--line);
}
.decade-year {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}
.decade-list {
  font-size: 0.88rem;
  color: var(--mute);
  line-height: 1.7;
}
.decade-list a {
  color: var(--paper-dim);
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease);
}
.decade-list a:hover {
  color: var(--gold);
}
.decade .related-link {
  border-bottom: 0;
  padding: 0;
}
.decade-body {
  display: grid;
  grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
  gap: clamp(18px, 4vw, 60px);
  padding: clamp(22px, 3vw, 34px) 0 clamp(30px, 4vw, 46px);
  border-bottom: 1px solid var(--line-2);
}
.decade-body:last-child {
  border-bottom: 0;
}
.decade-note {
  color: var(--paper-dim);
  font-size: 0.94rem;
  line-height: 1.85;
}

/* ---------- sitemap page ---------- */
.sitemap-cols {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: clamp(26px, 4vw, 48px);
}
.sitemap-col h2 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 400;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-2);
  margin-bottom: 4px;
}
.sitemap-col li {
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.86rem;
}
.sitemap-col a {
  color: var(--paper-dim);
}
.sitemap-col a:hover {
  color: var(--gold);
}
.sitemap-col .num {
  color: var(--mute);
  font-size: 10px;
  margin-left: 8px;
}

/* ---------- 404 ---------- */
.notfound {
  min-height: 78svh;
  display: grid;
  align-content: center;
  gap: 22px;
}
.notfound-code {
  font-family: var(--font-mono);
  font-size: clamp(4rem, 14vw, 11rem);
  line-height: 0.9;
  color: var(--line-2);
  letter-spacing: -0.02em;
}
.notfound h1 {
  font-weight: 300;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
}
.notfound p {
  color: var(--paper-dim);
  max-width: 52ch;
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: clamp(44px, 6vw, 76px) 26px;
  background: var(--ink-2);
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 64px);
  padding-bottom: clamp(34px, 5vw, 58px);
}
.footer-mark {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 1.8vw, 1.3rem);
  letter-spacing: 0.3em;
  color: var(--paper);
  margin-bottom: 8px;
}
.footer-tag {
  color: var(--mute);
  font-size: 0.84rem;
  max-width: 34ch;
}
.footer-nav {
  display: grid;
  gap: 8px;
  align-content: start;
}
.footer-nav .label {
  margin-bottom: 4px;
}
.footer-nav a {
  font-size: 0.86rem;
  color: var(--paper-dim);
  width: fit-content;
}
.footer-nav a:hover {
  color: var(--gold);
}
.footer-meta {
  display: grid;
  gap: 8px;
  align-content: start;
  font-size: 0.84rem;
  color: var(--mute);
  max-width: 40ch;
}
.footer-meta .label {
  margin-bottom: 4px;
}
.colophon {
  display: flex;
  flex-wrap: wrap;
  gap: 8px clamp(18px, 3vw, 40px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}
.colophon a {
  color: var(--paper-dim);
  border-bottom: 1px solid var(--line-2);
}
.colophon a:hover {
  color: var(--gold);
}

/* ---------- reveal ---------- */
.reveal {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: no-preference) {
  .js-reveal .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  }
  .js-reveal .reveal.is-in {
    opacity: 1;
    transform: none;
  }
}

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .stat {
    border-bottom: 1px solid var(--line);
  }
  .stat:nth-child(3n) {
    border-right: 0;
  }
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .detail-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .detail-aside {
    position: static;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    display: grid;
  }
  .about-teaser {
    grid-template-columns: minmax(0, 1fr);
  }
  .about-teaser-side {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 22px;
  }
  .footer-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .planet-hero {
    grid-template-columns: minmax(0, 1fr);
  }
  .decade-body {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 760px) {
  :root {
    --section-y: clamp(52px, 12vw, 78px);
  }
  .header-row {
    min-height: 60px;
    gap: 10px;
  }
  .brand-en {
    font-size: 11px;
    letter-spacing: 0.16em;
  }
  .brand-cn {
    display: none;
  }
  .nav {
    gap: 0;
  }
  .nav a {
    padding: 12px 6px;
  }
  .nav a > span:last-child {
    display: none;
  }
  .nav-num {
    display: inline;
    font-size: 13px;
    color: var(--paper-dim);
    letter-spacing: 0.04em;
  }
  .hero {
    min-height: 92svh;
    padding-bottom: 34px;
  }
  .hero-title-cn {
    font-size: clamp(2.9rem, 15vw, 4.6rem);
  }
  .hero-title-en {
    letter-spacing: 0.26em;
  }
  .hero-lead {
    max-width: 100%;
  }
  .hero-meta {
    gap: 18px 26px;
  }
  .scroll-cue {
    display: none;
  }
  .section-head {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
  }
  .section-note,
  .section-lead {
    max-width: 100%;
  }
  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .stat:nth-child(3n) {
    border-right: 1px solid var(--line);
  }
  .stat:nth-child(2n) {
    border-right: 0;
  }
  .cards {
    grid-template-columns: minmax(0, 1fr);
  }
  .entry {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }
  .entry-meta {
    grid-column: 2 / -1;
    justify-content: flex-start;
    gap: 10px;
  }
  .entry-sub {
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }
  .decade {
    grid-template-columns: 74px minmax(0, 1fr);
  }
  .decade .related-link {
    grid-column: 2 / -1;
  }
  .tl-item {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 12px;
    padding-left: 18px;
  }
  .filter-row > .label {
    min-width: 100%;
    margin-bottom: 2px;
  }
  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .ruler-legend {
    grid-template-columns: minmax(0, 1fr);
  }
  .colophon {
    gap: 6px 16px;
  }
}

@media print {
  .site-header,
  .hero-canvas,
  .hero-veil,
  .scroll-cue,
  .site-footer {
    display: none;
  }
  body {
    background: #fff;
    color: #111;
  }
  .section,
  .detail {
    border: 0;
    padding-block: 12mm;
  }
}