/* ── Shared baseline for all tobcn.ren pages ── */

:root {
  --xuan-paper: #F7F4ED;
  --vowen: #F2ECD9;
  --ink-full: #1A1714;
  --ink-body: #3D3833;
  --crow-blue: #424B50;
  --ink-whisper: #A8A29A;
  --cinnabar: #C0403A;
  --cinnabar-deep: #8B2018;
  --indigo-deep: #2A3C5C;
  --border: #E8E3D8;
  --white: #FFF;
  --font-serif: 'Playfair Display', 'EB Garamond', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-cn: 'Noto Serif SC', 'Songti SC', serif;
  --font-hero: 'EB Garamond', 'Playfair Display', Georgia, serif;
  --space-xl: 48px;
  --space-lg: 32px;
  --space-md: 24px;
  --space-sm: 16px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  color: var(--ink-body);
  background: var(--xuan-paper);
  line-height: 1.6;
}

/* ── Grain texture ── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  animation: grain-shift 8s steps(3) infinite;
}

@keyframes grain-shift {
  0%, 100% { background-position: 0 0; }
  33% { background-position: -3px 1px; }
  66% { background-position: 2px -2px; }
}

/* ── Shared Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 24px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  transition: background .3s;
}

.header.scrolled {
  background: rgba(247, 244, 237, 0.9);
  backdrop-filter: blur(16px);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 36px;
  flex-shrink: 0;
}

.header-about {
  text-decoration: none;
  font-size: 13px;
  color: var(--crow-blue);
  letter-spacing: 0.04em;
  transition: color .2s;
}

.header-about:hover { color: var(--cinnabar); }

.header-logo {
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.header-logo-en {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  color: var(--ink-full);
  letter-spacing: 0.06em;
}

.header-logo-cn {
  font-family: var(--font-cn);
  font-size: 11px;
  color: var(--crow-blue);
  letter-spacing: 0.1em;
  font-weight: 300;
}

/* Simple nav header (about, columns, etc.) */
.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.header-nav a {
  text-decoration: none;
  font-size: 13px;
  color: var(--crow-blue);
  letter-spacing: 0.04em;
  transition: color .2s;
}

.header-nav a:hover,
.header-nav a.active { color: var(--cinnabar); }

/* Hamburger menu btn */
.menu-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 28px;
  height: 18px;
  position: relative;
  z-index: 201;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.menu-btn span {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--ink-full);
  transition: transform .3s, opacity .2s;
}

.menu-btn.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-btn.open span:nth-child(2) { opacity: 0; }
.menu-btn.open span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

/* Lang switch */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--crow-blue);
}

.lang-switch a {
  text-decoration: none;
  color: var(--crow-blue);
  transition: color .2s;
  font-weight: 400;
}

.lang-switch a.active { color: var(--ink-full); }
.lang-switch a:hover { color: var(--ink-full); }
.lang-sep { color: var(--ink-whisper); }

/* Panel menu — slides in from left */
.menu-backdrop {
  position: fixed;
  inset: 0;
  z-index: 198;
  background: rgba(247, 244, 237, 0.92);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s, visibility .35s;
}
.menu-backdrop.open { opacity: 1; visibility: visible; }

.menu-panel {
  position: fixed;
  top: 72px;
  left: 0;
  bottom: 0;
  width: min(440px, 85vw);
  z-index: 199;
  background: var(--xuan-paper);
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform .4s cubic-bezier(.4,0,.2,1);
  box-shadow: 4px 0 40px rgba(26, 23, 20, 0.08);
}
.menu-panel.open { transform: translateX(0); }

.menu-panel-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 28px 36px 24px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.menu-panel-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--ink-full);
  letter-spacing: 0.02em;
}
.menu-panel-title-cn {
  font-family: var(--font-cn);
  font-size: 12px;
  color: var(--crow-blue);
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-left: 8px;
}
.menu-panel-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--crow-blue);
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color .2s;
}
.menu-panel-close:hover { color: var(--cinnabar); }

.menu-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 8px 36px 32px;
}

/* Category group */
.menu-cat {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}
.menu-cat:last-child { border-bottom: none; }

.menu-cat-header {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
}
.menu-cat-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  color: var(--ink-full);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color .2s;
}
a.menu-cat-name:hover { color: var(--cinnabar); }
.menu-cat-name.is-dull { color: var(--crow-blue); }

.menu-cat-cn {
  font-family: var(--font-cn);
  font-size: 11px;
  color: var(--crow-blue);
  font-weight: 300;
  letter-spacing: 0.06em;
}

.menu-cat-desc {
  font-size: 13px;
  color: var(--crow-blue);
  line-height: 1.6;
  margin-bottom: 10px;
}

/* Sub-items under a category */
.menu-sub {
  display: block;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--crow-blue);
  text-decoration: none;
  padding: 4px 0 4px 12px;
  border-left: 2px solid transparent;
  transition: color .2s, border-color .2s;
  letter-spacing: 0.03em;
}
.menu-sub:hover { color: var(--cinnabar); border-left-color: var(--cinnabar); }

/* Badge */
.menu-cat-badge {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-whisper);
  padding: 2px 8px;
  border: 1px solid var(--border);
  margin-top: 4px;
}
.menu-cat-badge.live {
  color: var(--cinnabar);
  border-color: var(--cinnabar);
}

/* Panel footer */
.menu-panel-footer {
  padding: 20px 36px 32px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 24px;
  flex-shrink: 0;
}
.menu-panel-footer a {
  text-decoration: none;
  font-size: 12px;
  color: var(--crow-blue);
  letter-spacing: 0.06em;
  transition: color .2s;
}
.menu-panel-footer a:hover { color: var(--cinnabar); }

@media(max-width:768px){
  .menu-panel { top: 50px; width: min(360px, 90vw); }
  .menu-panel-header { padding: 20px 24px 18px; }
  .menu-panel-body { padding: 4px 24px 24px; }
  .menu-panel-footer { padding: 16px 24px 24px; }
  .menu-cat { padding: 22px 0; }
  .menu-cat-name { font-size: 16px; }
}

/* ── Shared section spacing ── */
.section-wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 56px;
}

.section-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cinnabar);
  margin-bottom: 56px;
  text-align: center;
  font-weight: 500;
}

/* ── In-article subscribe ── */
.article-subscribe {
  margin: 3em auto 0;
  max-width: 680px;
  padding: 40px;
  background: var(--vowen);
  text-align: center;
}

.article-subscribe h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--ink-full);
}

.article-subscribe p {
  font-size: 14px;
  color: var(--crow-blue);
  margin-bottom: 20px;
}

.article-subscribe form {
  display: flex;
  gap: 6px;
  max-width: 400px;
  margin: 0 auto;
}

.article-subscribe input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--border);
  font-size: 14px;
  font-family: var(--font-sans);
  background: var(--white);
  outline: none;
}

.article-subscribe input:focus { border-color: var(--cinnabar); }

.article-subscribe button {
  padding: 12px 24px;
  background: var(--cinnabar);
  color: #fff;
  border: none;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-sans);
  white-space: nowrap;
}

.article-subscribe button:hover { background: var(--cinnabar-deep); }

/* ── Common link style (Editorial underline animation) ── */
a.inline-link {
  color: var(--cinnabar);
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
}

a.inline-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--cinnabar);
  opacity: 0.25;
  transform: scaleX(1);
  transform-origin: right;
  transition: transform 0.35s ease-out;
}

a.inline-link:hover::after {
  opacity: 1;
  transform: scaleX(1);
  transform-origin: left;
}

/* Footer links: same editorial underline */
.footer-nav a {
  position: relative;
  padding-bottom: 2px;
}

.footer-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--cinnabar);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s ease-out;
}

.footer-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ── Shared Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px var(--space-xl);
  text-align: center;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--ink-full);
}

.footer-cn {
  font-family: var(--font-cn);
  font-size: 12px;
  color: var(--crow-blue);
  font-weight: 300;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.footer-poem {
  font-family: var(--font-cn);
  font-size: 15px;
  color: var(--crow-blue);
  margin-bottom: 12px;
}

.footer-manifesto {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--ink-body);
  margin-bottom: 6px;
  line-height: 1.6;
}

.footer-manifesto .cn {
  font-family: var(--font-cn);
  font-size: 13px;
  color: var(--crow-blue);
  font-weight: 300;
  display: block;
  margin-top: 4px;
}

.footer-seal {
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--ink-whisper);
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  display: inline-block;
}

.footer-seal em { font-style: normal; font-family: var(--font-cn); }

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.footer-nav a {
  text-decoration: none;
  color: var(--ink-body);
  font-size: 13px;
  transition: color .2s;
}

.footer-nav a:hover { color: var(--cinnabar); }

.footer-copy { font-size: 11px; color: var(--ink-whisper); }

/* ── Responsive ── */
@media(max-width:1024px){
  .section-wrap { padding: 0 40px; }
}

@media(max-width:768px){
  .header { padding: 16px 24px; }
  .header.scrolled { padding: 10px 24px; }
  .header-left { gap: 14px; }
  .header-right { gap: 20px; }
  .header-logo-cn { display: none; }
  .header-logo-en { font-size: 18px; }
  .section-wrap { padding: 0 24px; }
  .footer { padding: 40px 24px; }
}

@media(max-width:480px){
  .header { padding: 12px 16px; }
  .header-left { gap: 10px; }
  .header-right { gap: 12px; }
  .header-about { font-size: 11px; }
  .lang-switch { font-size: 10px; gap: 6px; }
  .section-wrap { padding: 0 20px; }
  .footer { padding: 32px 20px; }
}