@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;900&family=Instrument+Serif:ital@0;1&display=swap');

:root {
  --paper-bg: #f5f2ec;
  --paper-ink: #0a0a0a;
  --paper-muted: #6b6b6b;
  --paper-line: #0a0a0a;
  --paper-accent: #ff4d00;
  --paper-soft: #e8e4db;
}

body {
  background: var(--paper-bg);
  color: var(--paper-ink);
  font-family: 'Inter', -apple-system, sans-serif;
  margin: 0;
  line-height: 1.55;
}
/* Header / Nav */
header { background: var(--paper-bg) !important; border-bottom: 2px solid var(--paper-ink) !important; position: sticky; top: 0; z-index: 100; }
header .container { max-width: 1040px; margin: 0 auto; padding: 0 1.5rem; }
.header-content { display: flex; justify-content: space-between; align-items: center; min-height: 70px; padding: 0.5rem 0; }
.logo-link { font-family: 'Instrument Serif', serif !important; font-style: italic !important; font-weight: 400 !important; font-size: 1.9rem !important; color: var(--paper-ink) !important; text-decoration: none; letter-spacing: -0.02em; }
.logo-link:hover { color: var(--paper-accent) !important; }
.main-nav { display: flex; align-items: center; }
.nav-links { display: flex; list-style: none; gap: 0; margin: 0; padding: 0; }
.nav-links li { margin: 0; }
.nav-links a { display: flex; align-items: center; gap: 0.4rem; color: var(--paper-ink) !important; font-family: 'Inter', sans-serif !important; font-weight: 500; font-size: 0.88rem; padding: 0.55rem 1rem; text-decoration: none; border-radius: 100px; transition: all 0.2s; }
.nav-links a:hover, .nav-links a.active { background: var(--paper-ink) !important; color: var(--paper-bg) !important; }
.nav-links a i { font-size: 0.78rem; opacity: 0.7; }
.menu-toggle { display: none; background: none; border: 1px solid var(--paper-ink); cursor: pointer; padding: 0.55rem 0.7rem; border-radius: 8px; }
.bar { display: block; width: 22px; height: 2px; margin: 5px 0; background: var(--paper-ink); transition: all 0.3s; }
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 70px; left: 0; right: 0; flex-direction: column; background: var(--paper-bg); padding: 1rem 1.5rem; border-bottom: 2px solid var(--paper-ink); z-index: 99; gap: 0; }
  .nav-links.active { display: flex; }
  .nav-links a { padding: 0.8rem 0; border-bottom: 1px solid var(--paper-ink); width: 100%; border-radius: 0; }
  .nav-links a:hover, .nav-links a.active { background: transparent !important; color: var(--paper-accent) !important; }
  .menu-toggle.active .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.active .bar:nth-child(2) { opacity: 0; }
  .menu-toggle.active .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* Footer */
footer { background: var(--paper-bg) !important; border-top: 2px solid var(--paper-ink); color: var(--paper-muted); font-family: 'Inter', sans-serif; font-size: 0.85rem; }
footer a { color: var(--paper-ink) !important; }

.paper-container { max-width: 1040px; margin: 0 auto; padding: 3rem 1.5rem; }

/* Intro */
.paper-intro { padding: 2rem 0 4rem; border-bottom: 2px solid var(--paper-ink); margin-bottom: 3rem; }
.paper-pill { display: inline-block; padding: 0.3rem 0.8rem; border: 1px solid var(--paper-ink); border-radius: 100px; font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 1.5rem; }
.paper-intro-title { font-family: 'Instrument Serif', serif; font-weight: 400; font-style: italic; font-size: clamp(3rem, 9vw, 7rem); line-height: 0.95; letter-spacing: -0.03em; margin: 0 0 1rem; }
.paper-intro-sub { font-size: 1.4rem; font-weight: 400; color: var(--paper-muted); max-width: 600px; margin: 0; line-height: 1.4; }

/* Hero */
.paper-hero { margin-bottom: 4rem; padding-bottom: 3rem; border-bottom: 2px solid var(--paper-ink); }
.paper-hero-link { display: grid; grid-template-columns: 1fr 1.1fr; gap: 3rem; text-decoration: none; color: inherit; align-items: end; padding: 1rem 0; }
.paper-num { font-family: 'Instrument Serif', serif; font-weight: 400; font-style: italic; font-size: 2rem; color: var(--paper-accent); margin-bottom: 0.5rem; }
.paper-cat { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.18em; color: var(--paper-muted); margin-bottom: 0.75rem; }
.paper-hero-title { font-family: 'Inter', sans-serif; font-weight: 700; font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.05; letter-spacing: -0.025em; margin: 0.5rem 0 1rem; max-width: 500px; }
.paper-hero-meta { font-size: 0.85rem; color: var(--paper-muted); margin-bottom: 1.5rem; }
.paper-arrow { display: inline-block; padding: 0.7rem 1.3rem; background: var(--paper-ink); color: var(--paper-bg); font-weight: 600; font-size: 0.9rem; border-radius: 100px; transition: all 0.2s; }
.paper-hero-link:hover .paper-arrow { background: var(--paper-accent); transform: translateX(5px); }
.paper-hero-right img { width: 100%; height: 450px; object-fit: cover; display: block; filter: grayscale(15%); transition: filter 0.3s; }
.paper-hero-link:hover .paper-hero-right img { filter: grayscale(0%); }

/* List head */
.paper-list-head { display: flex; gap: 0.6rem; align-items: center; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.2em; color: var(--paper-muted); padding-bottom: 1rem; margin-bottom: 0.5rem; border-bottom: 1px solid var(--paper-ink); }

/* List items */
.paper-list { margin-bottom: 5rem; }
.paper-list-item { display: grid; grid-template-columns: 60px 1fr 140px; gap: 1.5rem; padding: 1.5rem 0; border-bottom: 1px solid var(--paper-ink); text-decoration: none; color: inherit; align-items: center; transition: padding 0.3s; }
.paper-list-item:hover { padding-left: 1rem; background: var(--paper-soft); }
.paper-list-num { font-family: 'Instrument Serif', serif; font-weight: 400; font-style: italic; font-size: 1.5rem; color: var(--paper-muted); }
.paper-list-cat { font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.15em; color: var(--paper-muted); margin-bottom: 0.35rem; }
.paper-list-title { font-family: 'Inter', sans-serif; font-weight: 600; font-size: 1.25rem; line-height: 1.25; letter-spacing: -0.015em; margin: 0 0 0.3rem; color: var(--paper-ink); }
.paper-list-item:hover .paper-list-title { color: var(--paper-accent); }
.paper-list-meta { font-size: 0.78rem; color: var(--paper-muted); }
.paper-list-img img { width: 140px; height: 90px; object-fit: cover; display: block; filter: grayscale(15%); }

/* Categories grid */
.paper-cats { margin-top: 5rem; }
.paper-cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.paper-cat-card { display: block; padding: 1.5rem; border: 1px solid var(--paper-ink); text-decoration: none; color: inherit; transition: all 0.2s; background: var(--paper-bg); }
.paper-cat-card:hover { background: var(--paper-ink); color: var(--paper-bg); }
.paper-cat-num { font-family: 'Instrument Serif', serif; font-style: italic; font-size: 1rem; color: var(--paper-muted); margin-bottom: 0.8rem; }
.paper-cat-card:hover .paper-cat-num { color: var(--paper-accent); }
.paper-cat-name { font-weight: 600; font-size: 1.1rem; }

/* Breadcrumb */
.paper-breadcrumb { font-size: 0.8rem; color: var(--paper-muted); margin-bottom: 2.5rem; padding-top: 0.5rem; }
.paper-breadcrumb a { color: var(--paper-ink); text-decoration: underline; text-underline-offset: 3px; }

/* Category page */
.paper-cat-intro { padding: 2rem 0 3rem; border-bottom: 2px solid var(--paper-ink); margin-bottom: 2rem; }
.paper-cat-title { font-family: 'Instrument Serif', serif; font-weight: 400; font-style: italic; font-size: clamp(3rem, 8vw, 6rem); line-height: 1; letter-spacing: -0.03em; margin: 0 0 1rem; }
.paper-cat-sub { font-size: 1.1rem; color: var(--paper-muted); margin: 0; }

/* Post page */
.paper-post-container { max-width: 760px; }
.paper-post-header { padding: 1rem 0 2rem; border-bottom: 1px solid var(--paper-ink); margin-bottom: 2.5rem; }
.paper-post-title { font-family: 'Inter', sans-serif; font-weight: 700; font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1.05; letter-spacing: -0.03em; margin: 0.5rem 0 1rem; }
.paper-post-byline { font-size: 0.9rem; color: var(--paper-muted); }
.paper-post-figure { margin: 0 0 3rem; }
.paper-post-figure img { width: 100%; display: block; filter: grayscale(10%); }
.paper-post-body { font-size: 1.18rem; line-height: 1.7; color: #1a1a1a; font-family: 'Inter', sans-serif; }
.paper-post-body h2 { font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400; font-size: 2.2rem; margin: 3rem 0 1rem; letter-spacing: -0.02em; color: var(--paper-ink); }
.paper-post-body h3 { font-family: 'Inter', sans-serif; font-weight: 700; font-size: 1.35rem; margin-top: 2rem; }
.paper-post-body a { color: var(--paper-accent); text-decoration: underline; text-underline-offset: 3px; }
.paper-post-body blockquote { border-left: 3px solid var(--paper-accent); padding: 0.5rem 0 0.5rem 1.5rem; margin: 2rem 0; font-family: 'Instrument Serif', serif; font-style: italic; font-size: 1.6rem; line-height: 1.35; color: var(--paper-ink); }
.paper-post-body strong { font-weight: 700; }

.paper-related { margin-top: 4rem; padding-top: 2rem; border-top: 2px solid var(--paper-ink); }

.paper-empty { text-align: center; padding: 4rem 0; color: var(--paper-muted); font-family: 'Instrument Serif', serif; font-style: italic; font-size: 1.5rem; }

/* Responsive */
@media (max-width: 900px) {
  .paper-hero-link { grid-template-columns: 1fr; gap: 2rem; }
  .paper-hero-right img { height: 300px; }
  .paper-list-item { grid-template-columns: 40px 1fr; }
  .paper-list-img { display: none; }
  .paper-cat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .paper-cat-grid { grid-template-columns: 1fr; }
}