/* ========================================================================
   拾古集 · 手作纸感样式 · paper.css
   ----------------------------------------------------------------------
   设计意图：以宣纸、米黄纸为底，配合纤维噪点、墨渍、印章、纸胶带
   与版式变形（轻微旋转、撕边、毛边等），呈现旧式编辑部的纸张感。
   每个栏目以主色印章出现，避免统一套版的视觉印象。
   ======================================================================== */

/* ---------- 0. 变量 ---------- */
:root {
  /* 纸张色 */
  --paper-0: #f3ead3;     /* 浅米 */
  --paper-1: #efe3c8;     /* 米黄 */
  --paper-2: #e7d6ad;     /* 老宣 */
  --paper-3: #d9c594;     /* 草纸 */
  --paper-edge: #c7ad75;  /* 折痕边 */

  /* 墨色 */
  --ink-0: #2a1f12;
  --ink-1: #3d2d18;
  --ink-2: #5b4628;
  --ink-3: #7a6440;
  --ink-soft: rgba(42, 32, 18, .68);
  --red-wax: #8b1d18;      /* 印泥朱砂 */
  --red-deep: #5c1311;
  --tape: #e8d480;        /* 纸胶带 */
  --tape-soft: #d9bf66;
  --gold: #a88235;
  --vermilion: #b3472b;

  /* 栏目主色 */
  --c-chaowan: #b86a25;
  --c-erci: #6c5b9a;
  --c-chongwu: #6b7a3e;
  --c-chuanda: #a64a5e;
  --c-daiyan: #8b1d3a;
  --c-denghui: #c25528;
  --c-dianjing: #2a7a76;
  --c-diaosu: #5d6d3a;
  --c-donghua: #2a4a8a;
  --c-fanpai: #8a4456;

  /* 字号 */
  --fs-xxs: 11px;
  --fs-xs: 12px;
  --fs-sm: 14px;
  --fs-base: 16px;
  --fs-md: 18px;
  --fs-lg: 22px;
  --fs-xl: 28px;
  --fs-2xl: 36px;
  --fs-3xl: 48px;
  --fs-4xl: 64px;

  /* 排版 */
  --lh-tight: 1.35;
  --lh-base: 1.85;
  --lh-loose: 2.05;
  --tracking: .02em;

  /* 间距 */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 96px;

  /* 容器 */
  --w-narrow: 720px;
  --w-base: 980px;
  --w-wide: 1240px;
}

/* ---------- 1. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body, h1, h2, h3, h4, h5, h6, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }

/* ---------- 2. 纸张底纹 ---------- */
body {
  font-family: "Songti SC", "STSong", "SimSun", "Source Han Serif SC", "Noto Serif CJK SC", "KaiTi", serif;
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  letter-spacing: var(--tracking);
  color: var(--ink-1);
  background-color: var(--paper-0);
  background-image:
    /* 纤维噪点 */
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .16  0 0 0 0 .12  0 0 0 0 .06  0 0 0 .10 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/></svg>"),
    /* 斑驳 */
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='600' height='600'><filter id='m'><feTurbulence type='fractalNoise' baseFrequency='0.012' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 .30  0 0 0 0 .22  0 0 0 0 .12  0 0 0 .15 0'/></filter><rect width='100%25' height='100%25' filter='url(%23m)'/></svg>"),
    /* 中央微亮 */
    radial-gradient(ellipse at 50% 30%, rgba(255, 248, 222, .55), rgba(255, 248, 222, 0) 70%),
    /* 边角折痕 */
    radial-gradient(circle at 100% 100%, rgba(120, 88, 36, .10), transparent 35%),
    radial-gradient(circle at 0% 0%, rgba(120, 88, 36, .08), transparent 40%),
    linear-gradient(180deg, var(--paper-0), var(--paper-1));
  background-attachment: fixed, fixed, fixed, fixed, fixed, fixed;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* 全局墨迹、撕边装饰 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='400' height='400'><g fill='%233a2c18' opacity='.05'><circle cx='40' cy='80' r='1.4'/><circle cx='180' cy='30' r='1'/><circle cx='320' cy='120' r='1.2'/><circle cx='250' cy='270' r='.9'/><circle cx='90' cy='340' r='1.3'/><circle cx='360' cy='370' r='1'/></g></svg>");
  z-index: 0;
}

main, header, footer { position: relative; z-index: 1; }

/* ---------- 3. 排版 ---------- */
h1, h2, h3, h4 {
  font-family: "STKaiti", "KaiTi", "Kaiti SC", "KaiTi", "Songti SC", serif;
  font-weight: 700;
  line-height: var(--lh-tight);
  color: var(--ink-0);
  letter-spacing: .04em;
}
h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }
p { margin: 0 0 1em; }
small, .small { font-size: var(--fs-xs); color: var(--ink-2); }

.lead {
  font-size: var(--fs-md);
  color: var(--ink-2);
  line-height: var(--lh-loose);
}

.eyebrow {
  display: inline-block;
  font-family: "Songti SC", "SimSun", serif;
  font-size: var(--fs-xxs);
  letter-spacing: .35em;
  text-transform: uppercase;
  color: var(--ink-3);
  border-bottom: 1px solid currentColor;
  padding-bottom: 4px;
  margin-bottom: 8px;
}

/* 楷体落款 */
.sign {
  font-family: "STKaiti", "KaiTi", "Kaiti SC", serif;
  color: var(--ink-1);
  letter-spacing: .12em;
}

/* ---------- 4. 布局 ---------- */
.container { width: 100%; max-width: var(--w-base); margin: 0 auto; padding: 0 var(--sp-5); }
.container--narrow { max-width: var(--w-narrow); }
.container--wide { max-width: var(--w-wide); }

.row { display: flex; flex-wrap: wrap; gap: var(--sp-5); }
.row--center { align-items: center; justify-content: center; }
.col { flex: 1 1 0; min-width: 0; }
.col-2 { flex: 0 0 calc(50% - var(--sp-5)); }
.col-3 { flex: 0 0 calc(33.333% - var(--sp-5)); }

.stack > * + * { margin-top: var(--sp-5); }
.stack-sm > * + * { margin-top: var(--sp-3); }
.stack-lg > * + * { margin-top: var(--sp-6); }

.divider {
  height: 1px;
  background:
    linear-gradient(90deg, transparent, var(--paper-edge) 12%, var(--paper-edge) 88%, transparent);
  margin: var(--sp-6) 0;
}

/* ---------- 5. 站点顶栏 ---------- */
.topbar {
  border-bottom: 1px dashed rgba(122, 100, 64, .35);
  background: rgba(243, 234, 211, .55);
  backdrop-filter: blur(1px);
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  padding: var(--sp-3) var(--sp-5);
  max-width: var(--w-wide);
  margin: 0 auto;
  font-size: var(--fs-xs);
  letter-spacing: .12em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.topbar a:hover { color: var(--ink-0); }
.topbar__meta { display: flex; gap: var(--sp-4); flex-wrap: wrap; }

/* 主导航（页眉） */
.masthead {
  position: relative;
  padding: var(--sp-7) var(--sp-5) var(--sp-5);
  max-width: var(--w-wide);
  margin: 0 auto;
}
.masthead__row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-7);
}
.masthead__brand { display: flex; align-items: center; gap: var(--sp-4); }
.masthead__brand img { height: 64px; }
.masthead__brand .name { font-family: "STKaiti", "KaiTi", serif; font-size: 42px; letter-spacing: .22em; color: var(--ink-0); }
.masthead__brand .slogan { font-size: 12px; letter-spacing: .35em; color: var(--ink-3); margin-top: 6px; }
.masthead__stamp { width: 88px; height: 88px; transform: rotate(-8deg); opacity: .85; }
.masthead__date { font-family: "KaiTi", serif; font-size: 12px; color: var(--ink-3); letter-spacing: .25em; }

.masthead__title-line {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  margin-top: var(--sp-5);
  border-top: 1px solid var(--paper-edge);
  padding-top: var(--sp-3);
  font-size: var(--fs-xs);
  letter-spacing: .25em;
  color: var(--ink-3);
}
.masthead__title-line .item { display: inline-flex; align-items: center; gap: 6px; }
.masthead__title-line .item::before {
  content: ""; display: inline-block; width: 6px; height: 6px; background: var(--red-wax); border-radius: 50%;
}

/* 导航 */
.nav {
  border-top: 1px solid var(--paper-edge);
  border-bottom: 1px solid var(--paper-edge);
  background:
    repeating-linear-gradient(90deg, rgba(184, 156, 92, .04) 0 2px, transparent 2px 8px);
  position: sticky; top: 0; z-index: 30;
}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--w-wide); margin: 0 auto;
  padding: var(--sp-3) var(--sp-5);
}
.nav__list { display: flex; flex-wrap: wrap; gap: var(--sp-2) var(--sp-5); }
.nav__list a {
  position: relative;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: var(--fs-md);
  letter-spacing: .18em;
  color: var(--ink-1);
  padding: 4px 6px;
}
.nav__list a::after {
  content: "";
  position: absolute;
  left: 50%; right: 50%; bottom: -2px;
  height: 2px;
  background: var(--red-wax);
  transition: left .25s ease, right .25s ease;
}
.nav__list a:hover::after, .nav__list a.is-active::after { left: 6px; right: 6px; }
.nav__toggle { display: none; font-size: 22px; padding: 4px 10px; border: 1px solid var(--paper-edge); border-radius: 4px; }

/* 页脚 */
.footer {
  margin-top: var(--sp-9);
  border-top: 1px dashed rgba(122, 100, 64, .35);
  padding: var(--sp-7) var(--sp-5);
  background:
    linear-gradient(180deg, rgba(231, 214, 173, .55), rgba(217, 197, 148, .75));
}
.footer__inner { max-width: var(--w-wide); margin: 0 auto; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--sp-6); }
.footer h4 { font-family: "Songti SC", "SimSun", serif; font-size: var(--fs-sm); letter-spacing: .3em; color: var(--ink-3); margin-bottom: var(--sp-3); }
.footer ul li { padding: 4px 0; font-size: var(--fs-sm); color: var(--ink-2); }
.footer .seal { width: 56px; opacity: .85; }
.footer__bottom {
  max-width: var(--w-wide); margin: var(--sp-6) auto 0;
  padding-top: var(--sp-4);
  border-top: 1px solid rgba(122, 100, 64, .25);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--sp-3);
  font-size: var(--fs-xs); letter-spacing: .18em; color: var(--ink-3);
}

/* ---------- 6. 组件：纸胶带 / 印章 / 撕边 / 标签 / 票券 ---------- */

/* 纸胶带 */
.tape {
  position: absolute;
  width: 110px; height: 22px;
  background:
    repeating-linear-gradient(90deg, rgba(232, 212, 128, .85) 0 6px, rgba(232, 212, 128, .6) 6px 12px),
    var(--tape);
  box-shadow: 0 1px 2px rgba(0,0,0,.08), inset 0 0 0 1px rgba(255,255,255,.18);
  opacity: .9;
  display: flex; align-items: center; justify-content: center;
  font-family: "KaiTi", serif; font-size: 11px; color: var(--ink-2); letter-spacing: .25em;
}
.tape--tl { top: -10px; left: -16px; transform: rotate(-9deg); }
.tape--tr { top: -10px; right: -16px; transform: rotate(7deg); }
.tape--bl { bottom: -10px; left: -16px; transform: rotate(8deg); }
.tape--br { bottom: -10px; right: -16px; transform: rotate(-11deg); }

/* 印章 */
.stamp {
  display: inline-block;
  position: relative;
  padding: 10px 12px;
  border: 2px solid var(--red-wax);
  border-radius: 4px;
  color: var(--red-deep);
  font-family: "STKaiti", "KaiTi", serif;
  letter-spacing: .2em;
  background: rgba(139, 29, 24, .04);
  filter: contrast(1.05);
}
.stamp::before {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid var(--red-wax);
  border-radius: 2px;
  pointer-events: none;
}
.stamp--round {
  border-radius: 50%;
  width: 92px; height: 92px;
  display: inline-flex; align-items: center; justify-content: center;
  text-align: center;
  font-size: 14px;
  transform: rotate(-6deg);
}
.stamp--corner {
  position: absolute; top: 14px; right: 14px;
  transform: rotate(7deg);
}

/* 撕边（毛边） */
.torn-bottom {
  -webkit-mask-image:
    radial-gradient(circle at 10px 0, transparent 9px, #000 10px),
    linear-gradient(#000, #000);
  -webkit-mask-size: 20px 10px, 100% 100%;
  -webkit-mask-position: 0 100%, 0 0;
  -webkit-mask-repeat: repeat-x, no-repeat;
          mask-image:
    radial-gradient(circle at 10px 0, transparent 9px, #000 10px),
    linear-gradient(#000, #000);
          mask-size: 20px 10px, 100% 100%;
          mask-position: 0 100%, 0 0;
          mask-repeat: repeat-x, no-repeat;
}

/* 标签 */
.tag {
  display: inline-block;
  padding: 3px 10px 4px;
  border: 1px solid var(--paper-edge);
  background: rgba(243, 234, 211, .55);
  font-size: var(--fs-xs);
  letter-spacing: .15em;
  color: var(--ink-2);
  margin: 0 6px 6px 0;
}
.tag.is-active, .tag:hover { background: var(--ink-1); color: var(--paper-0); border-color: var(--ink-1); }

/* 票券 */
.ticket {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: var(--sp-4);
  align-items: center;
  padding: var(--sp-3) var(--sp-4);
  background: var(--paper-1);
  border: 1px solid var(--paper-edge);
  position: relative;
}
.ticket::before, .ticket::after {
  content: "";
  position: absolute;
  width: 14px; height: 14px;
  background: var(--paper-0);
  border: 1px solid var(--paper-edge);
  border-radius: 50%;
  top: 50%; transform: translateY(-50%);
}
.ticket::before { left: -7px; }
.ticket::after { right: -7px; }
.ticket .price {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 28px; color: var(--red-wax);
}

/* ---------- 7. 首页：头版 + 栏目卡片 ---------- */
.hero {
  padding: var(--sp-7) var(--sp-5) var(--sp-6);
  max-width: var(--w-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--sp-7);
  align-items: stretch;
}
.hero__plate {
  position: relative;
  background: var(--paper-1);
  border: 1px solid var(--paper-edge);
  padding: var(--sp-7) var(--sp-6);
  transform: rotate(-.4deg);
  box-shadow:
    6px 8px 0 -2px rgba(120, 88, 36, .10),
    8px 12px 24px -12px rgba(80, 50, 18, .25);
}
.hero__plate::after {
  content: "";
  position: absolute; inset: 8px;
  border: 1px solid rgba(122, 100, 64, .35);
  pointer-events: none;
}
.hero__kicker { display: inline-block; font-size: var(--fs-xs); letter-spacing: .35em; color: var(--red-wax); }
.hero__title {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: clamp(40px, 5.6vw, 76px);
  line-height: 1.05;
  margin: var(--sp-4) 0;
  color: var(--ink-0);
  letter-spacing: .04em;
}
.hero__title em {
  font-style: normal;
  color: var(--red-wax);
  border-bottom: 4px double var(--red-wax);
  padding: 0 6px;
}
.hero__lead { color: var(--ink-2); font-size: var(--fs-md); max-width: 56ch; }
.hero__actions { margin-top: var(--sp-5); display: flex; gap: var(--sp-4); flex-wrap: wrap; }

.hero__feature {
  position: relative;
  background: var(--paper-2);
  padding: var(--sp-5);
  transform: rotate(.7deg);
  border: 1px solid var(--paper-edge);
}
.hero__feature h3 { font-size: 24px; margin-bottom: var(--sp-3); }
.hero__feature ul { list-style: none; padding: 0; margin: 0; }
.hero__feature li {
  border-bottom: 1px dashed rgba(122, 100, 64, .35);
  padding: 8px 0;
  display: flex; justify-content: space-between; gap: var(--sp-3);
  font-size: var(--fs-sm);
}
.hero__feature li span:last-child { color: var(--ink-3); font-family: "KaiTi", serif; }

/* 栏目卡片网格 */
.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--sp-5);
}
.channel-card {
  position: relative;
  background: var(--paper-1);
  border: 1px solid var(--paper-edge);
  padding: var(--sp-5);
  transition: transform .25s ease, box-shadow .25s ease;
  isolation: isolate;
}
.channel-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, rgba(122, 100, 64, .08) 0 1px, transparent 1px 28px);
  pointer-events: none;
  z-index: -1;
}
.channel-card:hover { transform: translateY(-3px) rotate(-.4deg); box-shadow: 6px 10px 0 -4px rgba(120, 88, 36, .15); }
.channel-card__num {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 56px;
  color: var(--red-wax);
  opacity: .8;
  line-height: 1;
}
.channel-card__name {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 28px;
  margin: var(--sp-3) 0 6px;
  color: var(--ink-0);
}
.channel-card__name small { display: block; font-size: 11px; letter-spacing: .3em; color: var(--ink-3); margin-top: 4px; font-family: "Songti SC", serif; }
.channel-card__desc { color: var(--ink-2); font-size: var(--fs-sm); }
.channel-card__more {
  margin-top: var(--sp-4);
  display: inline-block;
  font-size: var(--fs-xs);
  letter-spacing: .25em;
  color: var(--ink-1);
  border-bottom: 1px solid currentColor;
}

/* 栏目主色印记 */
.channel-card[data-ch="chaowan"] .channel-card__num { color: var(--c-chaowan); }
.channel-card[data-ch="erci"] .channel-card__num { color: var(--c-erci); }
.channel-card[data-ch="chongwu"] .channel-card__num { color: var(--c-chongwu); }
.channel-card[data-ch="chuanda"] .channel-card__num { color: var(--c-chuanda); }
.channel-card[data-ch="daiyan"] .channel-card__num { color: var(--c-daiyan); }
.channel-card[data-ch="denghui"] .channel-card__num { color: var(--c-denghui); }
.channel-card[data-ch="dianjing"] .channel-card__num { color: var(--c-dianjing); }
.channel-card[data-ch="diaosu"] .channel-card__num { color: var(--c-diaosu); }
.channel-card[data-ch="donghua"] .channel-card__num { color: var(--c-donghua); }
.channel-card[data-ch="fanpai"] .channel-card__num { color: var(--c-fanpai); }

/* ---------- 8. 栏目页 ---------- */
.channel-head {
  position: relative;
  padding: var(--sp-8) var(--sp-5) var(--sp-5);
  max-width: var(--w-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--sp-6);
  align-items: end;
}
.channel-head__title {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: clamp(48px, 7vw, 96px);
  letter-spacing: .06em;
  color: var(--ink-0);
  line-height: .95;
}
.channel-head__name-cn { display: block; font-family: "STKaiti", serif; }
.channel-head__name-en { display: block; font-family: "Songti SC", serif; font-size: 14px; letter-spacing: .35em; color: var(--ink-3); margin-top: 8px; }
.channel-head__lead { color: var(--ink-2); font-size: var(--fs-md); max-width: 60ch; line-height: var(--lh-loose); }
.channel-head__seal {
  position: absolute; right: var(--sp-5); top: var(--sp-7);
  width: 110px; height: 110px;
  transform: rotate(-7deg);
}

[data-channel="chaowan"] .channel-head__seal { color: var(--c-chaowan); }
[data-channel="erci"]   .channel-head__seal { color: var(--c-erci); }
[data-channel="chongwu"] .channel-head__seal { color: var(--c-chongwu); }
[data-channel="chuanda"]  .channel-head__seal { color: var(--c-chuanda); }
[data-channel="daiyan"]   .channel-head__seal { color: var(--c-daiyan); }
[data-channel="denghui"]  .channel-head__seal { color: var(--c-denghui); }
[data-channel="dianjing"] .channel-head__seal { color: var(--c-dianjing); }
[data-channel="diaosu"]   .channel-head__seal { color: var(--c-diaosu); }
[data-channel="donghua"]  .channel-head__seal { color: var(--c-donghua); }
[data-channel="fanpai"]   .channel-head__seal { color: var(--c-fanpai); }

/* 筛选条 */
.filter-bar {
  display: flex; flex-wrap: wrap; gap: var(--sp-3); align-items: center;
  padding: var(--sp-3) var(--sp-5);
  margin: 0 auto var(--sp-5);
  max-width: var(--w-wide);
  background: rgba(231, 214, 173, .5);
  border: 1px dashed rgba(122, 100, 64, .35);
}
.filter-bar input[type="search"] {
  flex: 1;
  background: rgba(243, 234, 211, .85);
  border: 1px solid var(--paper-edge);
  padding: 8px 12px;
  font-family: "Songti SC", "SimSun", serif;
  letter-spacing: .12em;
}

/* 文章卡片 */
.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--sp-5);
  padding: 0 var(--sp-5) var(--sp-7);
  max-width: var(--w-wide);
  margin: 0 auto;
}
.article-card {
  position: relative;
  background: var(--paper-1);
  border: 1px solid var(--paper-edge);
  padding: var(--sp-5) var(--sp-4) var(--sp-4);
  display: flex; flex-direction: column; gap: var(--sp-3);
  transition: transform .25s ease, box-shadow .25s ease;
}
.article-card:hover { transform: translateY(-2px) rotate(-.25deg); box-shadow: 6px 10px 0 -4px rgba(120, 88, 36, .15); }
.article-card .meta {
  display: flex; justify-content: space-between; gap: var(--sp-3);
  font-size: var(--fs-xs); letter-spacing: .25em; color: var(--ink-3);
  border-bottom: 1px dashed rgba(122, 100, 64, .35);
  padding-bottom: var(--sp-2);
}
.article-card h3 {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 22px;
  line-height: 1.25;
  color: var(--ink-0);
}
.article-card h3 a:hover { color: var(--red-wax); }
.article-card .lede { font-size: var(--fs-sm); color: var(--ink-2); }
.article-card .foot {
  margin-top: auto;
  display: flex; justify-content: space-between; align-items: center;
  font-size: var(--fs-xs); color: var(--ink-3); letter-spacing: .2em;
}

/* 卡片版式变体（轮换） */
.article-card.vr-a { background: var(--paper-2); }
.article-card.vr-b { background: var(--paper-0); border-style: dashed; }
.article-card.vr-c { background: var(--paper-1); border-left: 6px solid var(--red-wax); }
.article-card.vr-d { background: var(--paper-2); border-style: double; border-width: 4px; padding: calc(var(--sp-5) - 2px) calc(var(--sp-4) - 2px) calc(var(--sp-4) - 2px); }

[data-channel="chaowan"] .article-card.vr-c { border-left-color: var(--c-chaowan); }
[data-channel="erci"]    .article-card.vr-c { border-left-color: var(--c-erci); }
[data-channel="chongwu"] .article-card.vr-c { border-left-color: var(--c-chongwu); }
[data-channel="chuanda"]  .article-card.vr-c { border-left-color: var(--c-chuanda); }
[data-channel="daiyan"]   .article-card.vr-c { border-left-color: var(--c-daiyan); }
[data-channel="denghui"]  .article-card.vr-c { border-left-color: var(--c-denghui); }
[data-channel="dianjing"] .article-card.vr-c { border-left-color: var(--c-dianjing); }
[data-channel="diaosu"]   .article-card.vr-c { border-left-color: var(--c-diaosu); }
[data-channel="donghua"]  .article-card.vr-c { border-left-color: var(--c-donghua); }
[data-channel="fanpai"]   .article-card.vr-c { border-left-color: var(--c-fanpai); }

/* ---------- 9. 文章页 ---------- */
.article {
  max-width: var(--w-narrow);
  margin: 0 auto;
  padding: var(--sp-7) var(--sp-5) var(--sp-6);
  position: relative;
}
.article__crumbs {
  font-size: var(--fs-xs); letter-spacing: .25em; color: var(--ink-3);
  border-bottom: 1px dashed rgba(122, 100, 64, .35);
  padding-bottom: var(--sp-3); margin-bottom: var(--sp-5);
}
.article__crumbs a:hover { color: var(--red-wax); }

.article__kicker { font-size: var(--fs-xs); letter-spacing: .35em; color: var(--red-wax); margin-bottom: var(--sp-3); }
.article__title {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.15;
  letter-spacing: .04em;
  color: var(--ink-0);
  margin-bottom: var(--sp-3);
}
.article__sub {
  font-family: "KaiTi", serif;
  font-size: var(--fs-md);
  color: var(--ink-2);
  margin-bottom: var(--sp-5);
}
.article__meta {
  display: flex; flex-wrap: wrap; gap: var(--sp-4);
  font-size: var(--fs-xs); letter-spacing: .25em; color: var(--ink-3);
  padding: var(--sp-3) 0;
  border-top: 1px solid var(--paper-edge);
  border-bottom: 1px solid var(--paper-edge);
  margin-bottom: var(--sp-5);
}
.article__meta span::before { content: "·"; margin-right: var(--sp-3); color: var(--red-wax); }
.article__meta span:first-child::before { content: ""; margin: 0; }

.article__lede {
  font-size: var(--fs-md);
  color: var(--ink-2);
  border-left: 3px solid var(--red-wax);
  padding: 4px 14px;
  background: rgba(231, 214, 173, .35);
  margin-bottom: var(--sp-5);
}

.article__body p {
  font-family: "Songti SC", "SimSun", serif;
  font-size: 17px;
  line-height: 2;
  color: var(--ink-1);
  margin-bottom: 1.1em;
  text-align: justify;
  text-justify: inter-ideograph;
  text-indent: 2em;
}
.article__body p:first-of-type::first-letter {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 3em;
  float: left;
  line-height: .9;
  padding: 4px 8px 0 0;
  color: var(--red-wax);
}

.article__body h2 {
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 26px;
  margin: var(--sp-6) 0 var(--sp-3);
  padding: 6px 0;
  border-bottom: 2px solid var(--paper-edge);
  position: relative;
}
.article__body h2::before {
  content: "";
  display: inline-block;
  width: 12px; height: 12px;
  background: var(--red-wax);
  margin-right: 10px;
  transform: translateY(-2px);
}

.article__body h3 {
  font-size: 21px;
  margin: var(--sp-5) 0 var(--sp-2);
  color: var(--ink-1);
}

.article__body blockquote {
  margin: var(--sp-5) 0;
  padding: var(--sp-4) var(--sp-5);
  background: rgba(231, 214, 173, .55);
  border-left: 4px solid var(--red-wax);
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 20px;
  color: var(--ink-0);
  line-height: 1.7;
  position: relative;
}
.article__body blockquote::before {
  content: "“";
  position: absolute;
  font-size: 64px; line-height: 1;
  top: -10px; left: 12px;
  color: var(--red-wax); opacity: .4;
  font-family: "KaiTi", serif;
}
.article__body blockquote footer {
  margin-top: var(--sp-3);
  font-size: var(--fs-xs); letter-spacing: .25em; color: var(--ink-3);
  font-family: "Songti SC", serif;
}

.article__body ul, .article__body ol {
  margin: 0 0 1em 2em;
  font-size: 16px;
}
.article__body ul li { list-style: disc; }
.article__body ol li { list-style: decimal; }
.article__body li { margin: .35em 0; line-height: 1.8; }

.article__body figure {
  margin: var(--sp-5) 0;
  padding: var(--sp-3);
  background: var(--paper-2);
  border: 1px solid var(--paper-edge);
  text-align: center;
}
.article__body figure svg.illus { display: inline-block; }
.article__body figure figcaption {
  font-size: var(--fs-xs); color: var(--ink-3);
  letter-spacing: .25em; margin-top: var(--sp-2);
  font-family: "KaiTi", serif;
}

.article__body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--sp-4) 0;
  font-size: var(--fs-sm);
  background: rgba(243, 234, 211, .55);
}
.article__body th, .article__body td {
  border: 1px solid var(--paper-edge);
  padding: 8px 10px;
  text-align: left;
}
.article__body th { background: rgba(184, 156, 92, .25); font-family: "KaiTi", serif; }

.callout {
  margin: var(--sp-5) 0;
  padding: var(--sp-4);
  border: 1px dashed rgba(122, 100, 64, .5);
  background: rgba(231, 214, 173, .35);
  font-family: "KaiTi", serif;
  font-size: 16px;
  color: var(--ink-1);
}
.callout strong { color: var(--red-wax); }

/* 文章版式 A：传统编辑稿 */
.article--classic .article__body p { text-indent: 2em; }
.article--classic .article__title { letter-spacing: .06em; }

/* 文章版式 B：笔记 + 票券 */
.article--field .article__body p { text-indent: 0; }
.article--field .article__body p { padding-left: 14px; border-left: 2px solid rgba(184, 156, 92, .55); }
.article--field .article__title { background: rgba(184, 156, 92, .15); padding: 6px 12px; }

/* 文章版式 C：明信片 + 印章 */
.article--postcard .article__title { padding-left: 64px; position: relative; }
.article--postcard .article__title::before {
  content: "拾古";
  position: absolute; left: 0; top: 6px;
  width: 52px; height: 52px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 2px solid var(--red-wax); color: var(--red-deep);
  font-family: "STKaiti", serif; font-size: 22px; letter-spacing: .1em;
  transform: rotate(-6deg);
  border-radius: 4px;
}
.article--postcard .article__body p { text-indent: 2em; }

/* 文章版式 D：卷宗式 */
.article--archive .article__body p { text-indent: 2em; }
.article--archive .article__title {
  border-top: 1px solid var(--ink-2);
  border-bottom: 1px solid var(--ink-2);
  padding: 10px 0;
}
.article--archive .article__body h2 { font-family: "Songti SC", serif; border-bottom: 1px dashed var(--paper-edge); }

/* 进度条 */
.progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; background: var(--red-wax); z-index: 60; transition: width .15s; }

/* 上下篇 */
.article-nav {
  max-width: var(--w-narrow); margin: 0 auto; padding: var(--sp-6) var(--sp-5);
  border-top: 1px dashed rgba(122, 100, 64, .35);
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-5);
}
.article-nav .nav-item { padding: var(--sp-3) var(--sp-4); border: 1px solid var(--paper-edge); background: rgba(243, 234, 211, .55); }
.article-nav .nav-item small { display: block; font-size: var(--fs-xs); letter-spacing: .3em; color: var(--ink-3); margin-bottom: 6px; }
.article-nav .nav-item.next { text-align: right; }

/* 分页 */
.pager {
  display: flex; flex-wrap: wrap; justify-content: center; gap: var(--sp-2);
  padding: var(--sp-5);
  max-width: var(--w-wide); margin: 0 auto;
}
.pager a, .pager span {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--paper-edge);
  background: rgba(243, 234, 211, .55);
  font-size: var(--fs-sm); letter-spacing: .15em;
  color: var(--ink-1);
}
.pager a:hover { background: var(--ink-1); color: var(--paper-0); border-color: var(--ink-1); }
.pager .is-current { background: var(--red-wax); color: var(--paper-0); border-color: var(--red-wax); }

/* ---------- 10. 通用按钮 ---------- */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--ink-2);
  background: rgba(243, 234, 211, .55);
  font-family: "KaiTi", serif;
  letter-spacing: .25em;
  font-size: var(--fs-sm);
  color: var(--ink-0);
  transition: background .2s, color .2s, transform .2s;
}
.btn:hover { background: var(--ink-1); color: var(--paper-0); transform: translateY(-1px); }
.btn--solid { background: var(--ink-1); color: var(--paper-0); }
.btn--solid:hover { background: var(--red-wax); border-color: var(--red-wax); }
.btn--ghost { border-style: dashed; }

/* ---------- 11. 响应式 ---------- */
@media (max-width: 960px) {
  .footer__inner { grid-template-columns: 1fr; }
  .hero { grid-template-columns: 1fr; }
  .channel-head { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav__toggle { display: inline-flex; align-items: center; }
  .nav__list { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--paper-1); flex-direction: column; padding: var(--sp-3) var(--sp-5); border-bottom: 1px solid var(--paper-edge); }
  .nav__list.is-open { display: flex; }
  .masthead__row { flex-direction: column; align-items: flex-start; }
  .masthead__brand .name { font-size: 32px; }
  h1 { font-size: var(--fs-2xl); }
  h2 { font-size: var(--fs-xl); }
  .article__title { font-size: 30px; }
  .article-nav { grid-template-columns: 1fr; }
  .article-nav .nav-item.next { text-align: left; }
  .channel-head__title { font-size: 56px; }
}

@media (max-width: 480px) {
  .article-card { padding: var(--sp-4); }
  .channel-card { padding: var(--sp-4); }
}

/* 印刷 */
@media print {
  body { background: white; }
  .nav, .footer, .article-nav { display: none; }
}

/* 减弱动效 */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}