/* Hallmark · macrostructure: Split Studio · H2 split diptych knobs: ratio=7/5, proof=image, alignment=left
 * theme: custom · vibe: "深空商店，克制，技术，东方玄幻" · paper: oklch(27.28% 0.0349 254.1) · accent: oklch(79.70% 0.1959 123.7)
 * display: Bricolage Grotesque · body: Noto Sans SC · axes: dark / geometric-sans / chromatic-green
 * enrichment: verified reference imagery · nav: N5 · footer: Ft5 · studied: no · context: explicit · v1.1.0
 * contrast: pass (40–41) · slop: pass (42–45) · honest: pass (46) · tokens: pass (48) · mobile: pass (34,49–57)
 * Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V5
 */
@import url("../../tokens.css?v=20260814");

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body {
  margin: 0;
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  padding-block-end: var(--space-3xl);
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: var(--rule-hair); text-underline-offset: 0.22em; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 {
  font-family: var(--font-display);
  font-style: normal;
  line-height: 1.12;
  overflow-wrap: anywhere;
  min-width: 0;
}
h1 { font-size: var(--text-display-s); letter-spacing: -0.04em; font-weight: 800; }
h2 { font-size: clamp(2rem, 4vw, 3.25rem); letter-spacing: -0.035em; font-weight: 800; }
h3 { font-size: var(--text-lg); letter-spacing: -0.02em; font-weight: 700; }
p, li { max-width: 68ch; }
ul, ol { margin-block: 0; padding-inline-start: 1.25rem; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
:focus { outline: none; }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; }
.btn-primary:focus-visible, .filter-tab[aria-selected="true"]:focus-visible { outline-color: var(--color-focus-inner); box-shadow: 0 0 0 6px var(--color-focus); }
[hidden] { display: none !important; }

.skip-link {
  position: fixed;
  inset-block-start: var(--space-sm);
  inset-inline-start: var(--space-sm);
  transform: translateY(-150%);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  padding: var(--space-sm) var(--space-md);
  z-index: var(--z-tooltip);
}
.skip-link:focus { transform: none; }
.container { width: min(100%, var(--content-max)); margin-inline: auto; padding-inline: var(--page-gutter); }
.page-shell { padding-block-start: calc(var(--banner-height) + var(--space-lg)); }
.section { padding-block: var(--space-3xl); }
.section--tight { padding-block: var(--space-2xl); }
.section--dark { background: var(--color-paper-2); color: var(--color-ink); }
.section-head { display: grid; gap: var(--space-sm); margin-block-end: var(--space-xl); max-width: 52rem; }
.section-head p { color: var(--color-muted); font-size: var(--text-md); }
.muted { color: var(--color-muted); }
.source-note { color: var(--color-neutral); font-size: var(--text-sm); }

.nav-pill {
  position: fixed;
  inset: var(--space-md) auto auto 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  width: min(44rem, calc(100% - 2rem));
  min-height: 3.5rem;
  padding: var(--space-xs) var(--space-sm) var(--space-xs) var(--space-md);
  background: color-mix(in oklch, var(--color-paper-2) 88%, transparent);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-pill);
  box-shadow: 0 0.75rem 2rem -1rem var(--color-shadow);
  backdrop-filter: blur(14px) saturate(120%);
  z-index: var(--z-sticky-nav);
}
.brand { display: inline-flex; align-items: center; gap: var(--space-xs); font-family: var(--font-display); font-weight: 800; text-decoration: none; white-space: nowrap; }
.brand img { width: 2rem; height: 2rem; border-radius: 50%; }
.nav-links { display: none; list-style: none; padding: 0; margin: 0 auto; gap: var(--space-md); align-items: center; }
.nav-links a { display: grid; place-items: center; min-height: 2.75rem; color: var(--color-ink-2); text-decoration: none; font-size: var(--text-sm); white-space: nowrap; }
.nav-links a[aria-current="page"] { color: var(--color-accent); }
.nav-toggle { margin-inline-start: auto; width: 2.75rem; height: 2.75rem; padding: 0; border: 0; border-radius: 50%; background: var(--color-paper-3); color: var(--color-ink); cursor: pointer; white-space: nowrap; }
.nav-pill a, .nav-pill button, .cta-sticky a { line-height: 1; }
.nav-cta { display: none; }
.mobile-menu {
  position: fixed;
  inset: 5.5rem var(--space-md) auto;
  padding: var(--space-md);
  background: var(--color-paper-2);
  color: var(--color-ink);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-lg);
  z-index: var(--z-dropdown);
}
.mobile-menu a { display: flex; align-items: center; min-height: 3rem; padding-inline: var(--space-sm); text-decoration: none; white-space: nowrap; }

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: var(--space-sm) var(--space-lg);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-sm);
  background: var(--color-paper-3);
  color: var(--color-ink);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform var(--dur-micro) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}
.btn-primary {
  overflow: hidden;
  border-color: var(--color-accent);
  background: linear-gradient(90deg, var(--color-accent), color-mix(in oklch, var(--color-accent) 78%, var(--color-ink)));
  color: var(--color-accent-ink);
}
.btn-primary::after {
  content: "";
  position: absolute;
  inset: -40% auto -40% -35%;
  width: 28%;
  transform: skewX(-18deg);
  background: linear-gradient(90deg, transparent, var(--color-sheen));
  opacity: 0;
  pointer-events: none;
}
.btn:active { transform: translateY(1px); }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
.btn[data-state="loading"] { cursor: progress; }
.btn[data-state="error"] { border-color: var(--color-danger); }
.btn[data-state="success"]::before { content: "完成 "; }
button:disabled, [aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; }
.filter-tab:active, .gallery-item:active, .icon-button:active, .nav-toggle:active { transform: translateY(1px); }

.hero { position: relative; padding-block: var(--space-3xl) var(--space-4xl); }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, color-mix(in oklch, var(--color-paper) 12%, transparent), var(--color-paper));
  pointer-events: none;
}
.hero-split { position: relative; display: grid; gap: var(--space-xl); align-items: center; }
.hero-copy { display: grid; gap: var(--space-lg); min-width: 0; }
.hero-kicker { color: var(--color-accent-2); font-weight: 700; letter-spacing: 0.03em; }
.hero-title span { display: block; margin-block-start: var(--space-xs); color: var(--color-ink-2); font-size: 0.42em; letter-spacing: 0; font-weight: 500; }
.hero-lede { color: var(--color-ink-2); font-size: var(--text-md); max-width: 52ch; }
.tag-list { display: flex; flex-wrap: wrap; gap: var(--space-xs); list-style: none; padding: 0; }
.tag { padding: var(--space-2xs) var(--space-sm); border-radius: var(--radius-sm); background: color-mix(in oklch, var(--color-paper-4) 68%, transparent); color: var(--color-ink-2); font-size: var(--text-sm); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-sm); align-items: center; }
.hero-figure { position: relative; margin: 0; min-width: 0; }
.hero-figure img { width: 100%; aspect-ratio: 3244 / 1938; object-fit: cover; border-radius: var(--radius-sm); }
.hero-figure figcaption { padding-block-start: var(--space-xs); color: var(--color-neutral); font-size: var(--text-sm); }
.hero-data { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-xs); }
.hero-data div { padding: var(--space-sm); background: var(--color-paper-2); }
.hero-data dt { color: var(--color-neutral); font-size: var(--text-xs); }
.hero-data dd { margin: 0; font-weight: 700; }

.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-xs); }
.info-item { min-width: 0; padding: var(--space-lg); background: var(--color-paper-2); }
.info-item dt { color: var(--color-neutral); font-size: var(--text-sm); }
.info-item dd { margin: var(--space-xs) 0 0; font-size: var(--text-md); font-weight: 700; overflow-wrap: anywhere; }

.split-row { display: grid; gap: var(--space-xl); align-items: start; }
.split-copy { display: grid; gap: var(--space-lg); }
.prose { display: grid; gap: var(--space-md); color: var(--color-ink-2); font-size: 1.0625rem; }
.split-media { margin: 0; min-width: 0; }
.split-media img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: var(--radius-sm); }
.split-media figcaption { margin-block-start: var(--space-xs); color: var(--color-neutral); font-size: var(--text-sm); }

.feature-grid { display: grid; gap: var(--space-sm); }
.feature-card { display: grid; gap: var(--space-sm); padding: var(--space-lg); background: var(--color-paper-2); min-width: 0; }
.feature-card:nth-child(2) { background: var(--color-paper-3); }
.feature-card p { color: var(--color-muted); }
.feature-mark { width: 2rem; height: 0.25rem; background: var(--color-accent); }

.gallery-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-sm); }
.gallery-item { position: relative; min-width: 0; border: 0; padding: 0; background: var(--color-paper-2); color: var(--color-ink); cursor: zoom-in; text-align: start; overflow: hidden; border-radius: var(--radius-sm); }
.gallery-item img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform var(--dur-short) var(--ease-out); }
.gallery-item span { display: block; padding: var(--space-sm); color: var(--color-ink-2); }
.filter-tabs { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-block-end: var(--space-lg); }
.filter-tab { min-height: 2.75rem; padding-inline: var(--space-md); border: var(--rule-hair) solid var(--color-rule); border-radius: var(--radius-pill); background: var(--color-paper-2); color: var(--color-ink-2); cursor: pointer; white-space: nowrap; }
.filter-tab[aria-selected="true"] { background: var(--color-accent); color: var(--color-accent-ink); border-color: var(--color-accent); }
.gallery-empty { padding: var(--space-xl); background: var(--color-paper-2); color: var(--color-muted); }

.lightbox { position: fixed; inset: 0; margin: auto; width: min(94%, 76rem); max-height: 90dvh; padding: var(--space-lg); border: var(--rule-hair) solid var(--color-rule); background: var(--color-paper-2); color: var(--color-ink); }
.lightbox::backdrop { background: var(--color-overlay); }
.lightbox img { width: 100%; max-height: 74dvh; object-fit: contain; }
.lightbox-bar { display: flex; justify-content: space-between; gap: var(--space-sm); align-items: center; margin-block-end: var(--space-sm); }
.icon-button { display: grid; place-items: center; width: 2.75rem; height: 2.75rem; border: 0; border-radius: 50%; background: var(--color-paper-3); color: var(--color-ink); cursor: pointer; }
.lightbox-controls { display: flex; gap: var(--space-xs); }

.timeline { display: grid; gap: var(--space-sm); }
.timeline-item { display: grid; grid-template-columns: 6rem minmax(0, 1fr); gap: var(--space-md); padding: var(--space-lg); background: var(--color-paper-2); }
.timeline time { color: var(--color-accent-2); font-variant-numeric: tabular-nums; }
.timeline-item p { color: var(--color-muted); }

.audience-grid { display: grid; gap: var(--space-sm); }
.audience-card { padding: var(--space-lg); background: var(--color-paper-2); }
.audience-card p { margin-block-start: var(--space-sm); color: var(--color-muted); }
.reveal-once { opacity: 0; transform: translateY(var(--space-xs)); transition: opacity var(--dur-long) var(--ease-out), transform var(--dur-long) var(--ease-out); }
.reveal-once.is-visible { opacity: 1; transform: none; }

.accordion { display: grid; gap: var(--space-xs); }
.accordion details { background: var(--color-paper-2); }
.accordion summary { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); min-height: 3.5rem; padding: var(--space-md) var(--space-lg); cursor: pointer; font-weight: 700; list-style: none; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after { content: "+"; color: var(--color-accent); font-size: var(--text-lg); }
.accordion details[open] summary::after { content: "−"; }
.accordion .answer { padding: 0 var(--space-lg) var(--space-lg); color: var(--color-muted); }

.cta-panel { display: grid; gap: var(--space-lg); align-items: center; padding: var(--space-xl); background: var(--color-paper-2); }
.cta-panel p { color: var(--color-muted); }
.cta-sticky { position: fixed; inset: auto 0 0; display: flex; justify-content: space-between; align-items: center; gap: var(--space-sm); padding: var(--space-sm) max(var(--space-md), env(safe-area-inset-right)) max(var(--space-sm), env(safe-area-inset-bottom)) max(var(--space-md), env(safe-area-inset-left)); background: var(--color-paper-2); color: var(--color-ink); border-top: var(--rule-hair) solid var(--color-rule); z-index: var(--z-sticky); }
.cta-sticky span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--color-muted); }
.cta-sticky .btn { min-height: 2.75rem; }

.download-grid { display: grid; gap: var(--space-sm); }
.download-visual { margin-block-end: var(--space-xl); }
.download-visual img, .guide-visual img { aspect-ratio: auto; object-fit: contain; background: var(--color-paper-2); }
.guide-visual { margin-block: var(--space-xs); }
.platform-card { display: grid; gap: var(--space-lg); align-content: start; padding: var(--space-xl); background: var(--color-paper-2); }
.platform-card.recommended { background: var(--color-paper-3); }
.status-badge { justify-self: start; padding: var(--space-2xs) var(--space-sm); border-radius: var(--radius-sm); background: var(--color-paper-4); color: var(--color-ink-2); font-size: var(--text-sm); }
.steps { display: grid; gap: var(--space-sm); counter-reset: steps; }
.step { position: relative; display: grid; gap: var(--space-xs); padding: var(--space-lg) var(--space-lg) var(--space-lg) var(--space-2xl); background: var(--color-paper-2); counter-increment: steps; }
.step::before { content: counter(steps, decimal-leading-zero); position: absolute; inset: var(--space-lg) auto auto var(--space-lg); color: var(--color-accent-2); font-family: var(--font-display); font-weight: 800; }
.spec-table th, .spec-table td { padding: var(--space-sm); border-bottom: var(--rule-hair) solid var(--color-rule-2); text-align: start; vertical-align: top; }
.spec-table th { color: var(--color-ink-2); }
.spec-table td { color: var(--color-muted); }

.guide-layout { display: grid; gap: var(--space-xl); align-items: start; }
.toc { padding: var(--space-lg); background: var(--color-paper-2); }
.toc nav { display: grid; gap: var(--space-xs); }
.toc a { min-height: 2.75rem; display: flex; align-items: center; color: var(--color-ink-2); text-decoration: none; white-space: nowrap; }
.guide-content { display: grid; gap: var(--space-2xl); min-width: 0; }
.guide-chapter { display: grid; gap: var(--space-md); scroll-margin-top: calc(var(--banner-height) + var(--space-lg)); }
.guide-chapter p, .guide-chapter li { color: var(--color-ink-2); }
.guide-cards { display: grid; gap: var(--space-sm); }
.guide-card { display: grid; gap: var(--space-sm); padding: var(--space-lg); background: var(--color-paper-2); text-decoration: none; }
.guide-card p { color: var(--color-muted); }

.article-list { display: grid; gap: var(--space-sm); }
.article-card { display: grid; gap: var(--space-sm); padding: var(--space-lg); background: var(--color-paper-2); text-decoration: none; }
.article-card p { color: var(--color-muted); }
.article-shell { display: grid; gap: var(--space-xl); max-width: 52rem; margin-inline: auto; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: var(--space-xs); color: var(--color-muted); font-size: var(--text-sm); }
.breadcrumbs a { white-space: nowrap; }
.article-lede { color: var(--color-ink-2); font-size: var(--text-md); }
.article-body { display: grid; gap: var(--space-lg); }
.article-body p, .article-body li { color: var(--color-ink-2); }
.article-body h2 { margin-block-start: var(--space-xl); font-size: var(--text-2xl); }
.article-body h3 { margin-block-start: var(--space-lg); }
.answer-box { padding: var(--space-lg); background: var(--color-paper-2); color: var(--color-ink-2); }
.link-cluster { display: flex; flex-wrap: wrap; gap: var(--space-sm); padding: var(--space-lg); background: var(--color-paper-2); }
.link-cluster a { white-space: nowrap; }

.foot-stmt { padding: var(--space-3xl) var(--page-gutter) var(--space-2xl); background: var(--color-paper-2); color: var(--color-ink); display: grid; gap: var(--space-xl); }
.foot-stmt__inner { width: min(100%, var(--content-max)); margin-inline: auto; display: grid; gap: var(--space-xl); }
.foot-stmt__line { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3.25rem); line-height: 1.08; letter-spacing: -0.03em; max-width: 28ch; }
.foot-links { display: grid; gap: var(--space-lg); }
.foot-group { display: grid; gap: var(--space-xs); align-content: start; }
.foot-group h3 { font-size: var(--text-base); color: var(--color-ink-2); }
.foot-group a { color: var(--color-muted); white-space: nowrap; }
.foot-meta { display: grid; gap: var(--space-sm); padding-block-start: var(--space-md); border-top: var(--rule-hair) solid var(--color-rule); color: var(--color-neutral); font-size: var(--text-sm); }

.reveal { opacity: 0; transform: translateY(0.5rem); animation: reveal var(--dur-long) var(--ease-out) forwards; animation-delay: calc(var(--i, 0) * 60ms); }
@keyframes reveal { to { opacity: 1; transform: none; } }

@media (hover: hover) and (pointer: fine) {
  .btn:hover { transform: translateY(-1px); }
  .btn-primary:hover::after { opacity: 1; transform: translateX(430%) skewX(-18deg); transition: transform var(--dur-long) var(--ease-out), opacity var(--dur-short) var(--ease-out); }
  .nav-links a:hover { color: var(--color-ink); }
  .gallery-item:hover img { transform: scale(1.025); }
  .feature-card:hover, .audience-card:hover { transform: translateY(-2px); transition: transform var(--dur-short) var(--ease-out); }
  .guide-card:hover, .article-card:hover { background: var(--color-paper-3); }
}

@media (min-width: 40rem) {
  .nav-links { display: flex; }
  .nav-toggle, .mobile-menu { display: none !important; }
  .nav-cta { display: inline-flex; }
  .hero-data { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .info-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .feature-grid, .audience-grid, .download-grid, .guide-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery-grid.gallery-grid--wide { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .foot-links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .foot-meta { grid-template-columns: 1fr auto; align-items: start; }
  .cta-panel { grid-template-columns: minmax(0, 1fr) auto; }
}

@media (min-width: 60rem) {
  .hero-split { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--space-2xl); }
  .split-row { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--space-2xl); }
  .split-row.reverse .split-copy { order: 2; }
  .split-row.reverse .split-media { order: 1; }
  .feature-grid { grid-template-columns: 1.15fr 0.85fr; }
  .feature-card:nth-child(3) { margin-inline-start: var(--space-xl); }
  .timeline-item { grid-template-columns: 8rem minmax(0, 1fr); }
  .guide-layout { grid-template-columns: 16rem minmax(0, 1fr); }
  .toc { position: sticky; inset-block-start: calc(var(--banner-height) + var(--space-md)); }
}

@media (min-width: 90rem) {
  .hero { padding-block-start: var(--space-3xl); }
  .section { padding-block: var(--space-4xl); }
}

@media (pointer: coarse) {
  .btn, .filter-tab, .nav-links a, .foot-group a { min-height: 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 150ms !important; animation-iteration-count: 1 !important; transition-duration: 150ms !important; }
  .reveal { animation: none; opacity: 1; transform: none; }
  .btn-primary::after { display: none; }
}