/* Qianse Desire Archive — dependency-free visual system */
:root {
  color-scheme: dark;
  --ink: #0b090c;
  --surface: #171017;
  --surface-2: #20161e;
  --ivory: #eee4d2;
  --muted: #bdb2a3;
  --plum: #8f5270;
  --plum-light: #c081a0;
  --gold: #b99a62;
  --line: #554337;
  --max: 72rem;
  --reading: 46rem;
  --serif: ui-serif, "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--ink); scroll-behavior: smooth; }
body { margin: 0; min-width: 18rem; background: var(--ink); color: var(--ivory); font-family: var(--sans); font-size: 1rem; line-height: 1.75; }
a { color: inherit; text-decoration-color: var(--gold); text-underline-offset: .24em; }
a:hover { color: #fff8eb; text-decoration-thickness: .12em; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--plum-light); outline-offset: 4px; }
p, h1, h2, h3 { margin-top: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.25; text-wrap: balance; }
h1 { font-size: clamp(2.45rem, 8vw, 5.75rem); letter-spacing: -.045em; }
h2 { font-size: clamp(1.75rem, 5vw, 3rem); letter-spacing: -.025em; }
h3 { font-size: 1.2rem; }
ul, ol { padding-left: 1.35rem; }

.skip-link { position: fixed; z-index: 20; top: .5rem; left: .5rem; padding: .65rem 1rem; background: var(--ivory); color: var(--ink); transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); background: var(--ink); padding: env(safe-area-inset-top) max(1rem, env(safe-area-inset-right)) 0 max(1rem, env(safe-area-inset-left)); }
.header-inner { width: min(100%, var(--max)); margin-inline: auto; padding-block: .8rem; display: flex; flex-direction: column; gap: .75rem; }
.brand { min-height: 44px; display: inline-flex; flex-direction: column; justify-content: center; width: fit-content; text-decoration: none; font-family: var(--serif); letter-spacing: .08em; }
.brand small { color: var(--gold); font-family: var(--sans); font-size: .63rem; letter-spacing: .14em; text-transform: uppercase; }
nav { display: flex; gap: .3rem; overflow-x: auto; padding-bottom: .2rem; scrollbar-width: thin; }
nav a { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; padding-inline: .8rem; border: 1px solid transparent; color: var(--muted); text-decoration: none; white-space: nowrap; }
nav a[aria-current="page"] { border-color: var(--gold); color: var(--ivory); }
.status-bar { padding: .7rem max(1rem, env(safe-area-inset-right)) .7rem max(1rem, env(safe-area-inset-left)); border-bottom: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: .85rem; display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: .2rem .8rem; }
.status-bar strong { color: var(--ivory); letter-spacing: .04em; }
.status-bar a { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; color: var(--ivory); }
main { overflow: clip; padding-inline: max(1rem, env(safe-area-inset-left)) max(1rem, env(safe-area-inset-right)); }
main > section, .articles { width: min(100%, var(--max)); margin-inline: auto; }
.hero { min-height: 68svh; padding-block: clamp(4rem, 12vw, 9rem); display: flex; flex-direction: column; justify-content: center; border-bottom: 1px solid var(--line); }
.hero h1 { max-width: 13ch; }
.eyebrow { margin-bottom: 1.1rem; color: var(--gold); font-size: .72rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.lede { max-width: 43rem; color: var(--muted); font-family: var(--serif); font-size: clamp(1.12rem, 3vw, 1.5rem); }
.actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.6rem; }
.button { min-height: 44px; display: inline-flex; align-items: center; padding: .65rem 1rem; border: 1px solid var(--gold); text-decoration: none; }
.button.primary { background: var(--ivory); color: var(--ink); border-color: var(--ivory); }
.page-intro { padding-block: clamp(4rem, 10vw, 8rem); border-bottom: 1px solid var(--line); }
.page-intro h1 { max-width: 15ch; }
.section-grid, .two-col, .feature-row { padding-block: clamp(4rem, 9vw, 7rem); border-bottom: 1px solid var(--line); display: grid; gap: 2rem; }
.prose { max-width: var(--reading); color: var(--muted); }
.prose p:last-child, .prose ul:last-child { margin-bottom: 0; }
.prose li + li { margin-top: .65rem; }
.archive-steps { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.archive-steps li { display: grid; grid-template-columns: 2.5rem 1fr; gap: 1rem; padding-block: 1.4rem; border-bottom: 1px solid var(--line); }
.archive-steps span, .cards span, .safety-list > article > span { color: var(--gold); font: 700 .72rem/1 var(--sans); letter-spacing: .1em; }
.archive-steps h3, .archive-steps p { margin-bottom: .35rem; }
.archive-steps p { color: var(--muted); }
.index-list { border-top: 1px solid var(--line); }
.index-list a { min-height: 56px; display: grid; grid-template-columns: 3.3rem 1fr; align-items: center; gap: .5rem; border-bottom: 1px solid var(--line); text-decoration: none; }
.index-list span { color: var(--gold); font-size: .72rem; }
.notice { margin-block: clamp(3rem, 7vw, 5rem); padding: clamp(1.4rem, 4vw, 2.5rem); border: 1px solid var(--gold); border-left-width: 5px; background: var(--surface); }
.notice h2 { font-size: 1.4rem; }
.notice p:last-child { margin-bottom: 0; color: var(--muted); }
.permission-grid, .principles, .catalog, .safety-list { width: min(100%, var(--max)); margin-inline: auto; padding-block: clamp(4rem, 9vw, 7rem); border-bottom: 1px solid var(--line); }
.permission-grid { display: grid; gap: 1rem; }
.permission-grid article { padding: 1.5rem; border: 1px solid var(--line); background: var(--surface); }
.permission-grid li + li { margin-top: .55rem; }
.label { width: fit-content; padding: .15rem .55rem; border: 1px solid currentColor; font-size: .75rem; letter-spacing: .12em; }
.allowed { color: var(--gold); }
.denied { color: var(--plum-light); }
.cards { display: grid; gap: 1rem; margin-top: 2rem; }
.cards article { padding: 1.5rem; border-top: 1px solid var(--gold); background: var(--surface); }
.cards h3 { margin-top: 1.5rem; }
.cards p { margin-bottom: 0; color: var(--muted); }
.catalog h2 { margin-bottom: 2rem; }
.catalog ol { list-style: none; padding: 0; border-top: 1px solid var(--line); }
.catalog a { min-height: 58px; padding-block: .65rem; display: grid; grid-template-columns: 3.5rem 1fr; align-items: center; border-bottom: 1px solid var(--line); text-decoration: none; }
.catalog span { color: var(--gold); font-size: .7rem; letter-spacing: .1em; }
.articles { padding-bottom: 5rem; }
.research-article { max-width: var(--reading); margin-inline: auto; padding-block: clamp(4rem, 10vw, 8rem); border-bottom: 1px solid var(--line); scroll-margin-top: 1rem; }
.research-article > header { margin-bottom: 3rem; }
.research-article > header span { display: block; margin-bottom: 1rem; color: var(--gold); font-size: .75rem; letter-spacing: .16em; }
.research-article h2 { font-size: clamp(2rem, 6vw, 3.6rem); }
.research-article section { margin-block: 2.2rem; }
.research-article section h3 { padding-left: .8rem; border-left: 3px solid var(--plum); }
.research-article section p { color: var(--muted); }
.article-opening { margin-bottom: 2.5rem; color: var(--ivory); font-family: var(--serif); font-size: clamp(1.12rem, 3vw, 1.35rem); }
.reflection { padding: 1.25rem; border: 1px solid var(--line); background: var(--surface); }
.caution { margin-block: 2.2rem; padding: 1.25rem; border-left: 4px solid var(--plum-light); background: var(--surface-2); }
.reflection p, .caution p { margin-bottom: 0; color: var(--muted); }
.back a { min-height: 44px; display: inline-flex; align-items: center; font-size: .85rem; }
.safety-list > article { padding-block: 2rem; border-top: 1px solid var(--line); display: grid; grid-template-columns: 2.5rem 1fr; gap: 1rem; }
.safety-list h2 { font-size: clamp(1.5rem, 4vw, 2.2rem); }
.safety-list p { max-width: var(--reading); color: var(--muted); }
footer { padding: 2.5rem max(1rem, env(safe-area-inset-right)) calc(2.5rem + env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left)); border-top: 1px solid var(--gold); color: var(--muted); display: flex; flex-direction: column; gap: 1.5rem; }
footer > div { max-width: 34rem; }
footer strong { color: var(--ivory); font-family: var(--serif); }
footer p { margin: .4rem 0 0; font-size: .85rem; }
.footer-links { display: flex; flex-direction: column; align-items: flex-start; gap: .35rem; font-size: .8rem; }
.footer-links a { min-width: 44px; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }

@media (min-width: 48rem) {
  .header-inner { min-height: 76px; flex-direction: row; align-items: center; justify-content: space-between; }
  nav { padding-bottom: 0; }
  .section-grid, .two-col, .feature-row { grid-template-columns: minmax(12rem, .72fr) minmax(0, 1.28fr); gap: clamp(3rem, 8vw, 8rem); }
  .permission-grid { grid-template-columns: 1fr 1fr; }
  .span-all { grid-column: 1 / -1; }
  .cards { grid-template-columns: 1fr 1fr; }
  footer { flex-direction: row; justify-content: space-between; }
  .footer-links { align-items: flex-end; }
}

@media (min-width: 70rem) {
  .hero { padding-left: 5vw; }
  .cards { grid-template-columns: repeat(4, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}