/* ===========================================================
   wuyán atelier — 设计系统
   受博物馆图录与艺术书启发的版面语言
   =========================================================== */

:root {
  /* —— 调色板 —— */
  --paper:        #EFEBE0;   /* 主纸面：暖象牙 */
  --paper-soft:   #E6E1D2;   /* 副纸面：略深 */
  --paper-deep:   #DBD5C2;   /* 更深底 */
  --ink:          #1B1A17;   /* 主文字：墨黑 */
  --ink-soft:     #4F4A42;   /* 副文字 */
  --ink-mute:     #8A8478;   /* 弱化文字 */
  --rule:         #BFB8A6;   /* 主分割线 */
  --rule-soft:    #D9D3C2;   /* 浅分割线 */
  --accent:       #7A2E1F;   /* 氧化血红点缀 */
  --accent-soft:  #9B4636;

  /* —— 字体 —— */
  --font-display: 'Fraunces', 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', serif;
  --font-serif:   'Fraunces', 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', 'STSong', serif;
  --font-sans:    'Inter', 'Noto Sans SC', 'Source Han Sans SC', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', ui-monospace, Menlo, monospace;

  /* —— 尺度 —— */
  --gutter:       clamp(20px, 4.2vw, 56px);
  --margin:       clamp(24px, 6vw, 88px);
  --measure:      62ch;
  --max-width:    1320px;
}

/* —— 重置 —— */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1, 'ss01' 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
ul, ol { list-style: none; }

/* —— 排版基础 —— */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink);
}
h1 { font-size: clamp(2.6rem, 6.4vw, 5.4rem); font-variation-settings: 'opsz' 144, 'SOFT' 30; }
h2 { font-size: clamp(1.9rem, 3.6vw, 3.2rem); font-variation-settings: 'opsz' 96, 'SOFT' 50; }
h3 { font-size: clamp(1.3rem, 2vw, 1.7rem); font-variation-settings: 'opsz' 36; }
h4 { font-size: clamp(1.05rem, 1.3vw, 1.2rem); font-variation-settings: 'opsz' 24; }

p { max-width: var(--measure); }
p + p { margin-top: 1em; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 500;
}
.eyebrow .num {
  color: var(--accent);
  margin-right: 0.6em;
}
.lede {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 1.6vw, 1.45rem);
  line-height: 1.5;
  color: var(--ink-soft);
  font-style: italic;
  max-width: 48ch;
}
.rule { display: block; height: 1px; background: var(--rule); border: 0; }
.rule-soft { background: var(--rule-soft); }

/* ===========================================================
   顶部 running head（书脊式）
   =========================================================== */
.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(120%) blur(8px);
  -webkit-backdrop-filter: saturate(120%) blur(8px);
}
.masthead__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px var(--margin);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
}
.masthead__brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-variation-settings: 'opsz' 36;
  letter-spacing: -0.01em;
}
.masthead__brand .zh { font-family: var(--font-serif); font-size: 1.05rem; }
.masthead__brand .dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; display: inline-block; }
.masthead__nav {
  display: flex;
  gap: clamp(16px, 2.4vw, 36px);
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.masthead__nav a {
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}
.masthead__nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.masthead__nav a:hover { color: var(--ink); }
.masthead__nav a:hover::after,
.masthead__nav a.is-active::after { transform: scaleX(1); }
.masthead__nav a.is-active { color: var(--ink); }
.masthead__folio {
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: flex;
  align-items: center;
  gap: 10px;
}
.masthead__folio .pn { color: var(--accent); }
.masthead__menu {
  display: none;
  width: 32px; height: 32px;
  align-items: center; justify-content: center;
  border: 1px solid var(--rule);
  border-radius: 2px;
}
.masthead__menu span {
  display: block; width: 14px; height: 1px; background: var(--ink);
  position: relative;
}
.masthead__menu span::before, .masthead__menu span::after {
  content: ''; position: absolute; left: 0; width: 14px; height: 1px; background: var(--ink);
}
.masthead__menu span::before { top: -4px; }
.masthead__menu span::after  { top:  4px; }

/* ===========================================================
   通用容器
   =========================================================== */
.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin);
}
.section { padding: clamp(64px, 9vw, 140px) 0; }
.section--tight { padding: clamp(40px, 5vw, 72px) 0; }
.section--paper { background: var(--paper-soft); }
.section--deep  { background: var(--paper-deep); }

.divider {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin);
}

/* ===========================================================
   英雄区（首页）
   =========================================================== */
.hero {
  padding: clamp(72px, 12vw, 180px) 0 clamp(64px, 9vw, 120px);
  position: relative;
}
.hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin);
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: clamp(28px, 5vw, 80px);
  align-items: end;
}
.hero__eyebrow { margin-bottom: 32px; }
.hero__title {
  font-family: var(--font-display);
  font-variation-settings: 'opsz' 144, 'SOFT' 30;
  font-weight: 400;
  font-size: clamp(2.4rem, 6.2vw, 5.2rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  max-width: 14ch;
}
.hero__title em {
  font-style: italic;
  color: var(--accent);
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
}
.hero__meta {
  display: flex;
  flex-direction: column;
  gap: 18px;
  font-size: 0.95rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--rule);
  padding-top: 20px;
}
.hero__meta-row {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 12px;
  align-items: baseline;
}
.hero__meta-row .k {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.hero__scroll {
  margin-top: clamp(48px, 8vw, 96px);
  border-top: 1px solid var(--rule);
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.hero__scroll .line {
  flex: 1;
  height: 1px;
  background: var(--rule);
  margin: 0 24px;
  position: relative;
  overflow: hidden;
}
.hero__scroll .line::after {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 24px;
  background: var(--accent);
  animation: scroll-pulse 3.2s ease-in-out infinite;
}
@keyframes scroll-pulse {
  0%   { transform: translateX(-100%); }
  60%  { transform: translateX(calc(100vw - 24px)); }
  100% { transform: translateX(calc(100vw - 24px)); }
}

/* ===========================================================
   卡片与栅格
   =========================================================== */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.pillar {
  padding: clamp(28px, 4vw, 56px) clamp(20px, 3vw, 40px);
  border-right: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 280px;
}
.pillar:last-child { border-right: 0; }
.pillar__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--accent);
}
.pillar__title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-variation-settings: 'opsz' 48;
  line-height: 1.2;
}
.pillar__body { color: var(--ink-soft); font-size: 0.95rem; line-height: 1.6; }
.pillar__more {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.pillar__more::after {
  content: '→';
  transition: transform 0.3s ease;
}
.pillar:hover .pillar__more::after { transform: translateX(6px); }

/* —— 两栏（编辑式）—— */
.split {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: clamp(28px, 5vw, 80px);
  align-items: start;
}
.split--reverse {
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
}
.split__head { position: sticky; top: 96px; }
.split__head h2 { margin-top: 12px; }
.split__head p { margin-top: 16px; }

.lede-block {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 1.7vw, 1.5rem);
  line-height: 1.55;
  color: var(--ink);
  font-style: italic;
  max-width: 38ch;
}
.lede-block::first-letter {
  font-family: var(--font-display);
  font-style: normal;
  font-variation-settings: 'opsz' 144;
  font-size: 3.4em;
  float: left;
  line-height: 0.85;
  padding: 0.1em 0.12em 0 0;
  color: var(--accent);
}

/* —— 选作列表 —— */
.works {
  border-top: 1px solid var(--rule);
}
.work {
  display: grid;
  grid-template-columns: 60px 1fr 1.4fr auto;
  gap: clamp(16px, 3vw, 40px);
  padding: clamp(20px, 2.6vw, 32px) 0;
  border-bottom: 1px solid var(--rule-soft);
  align-items: baseline;
  transition: padding 0.3s ease;
}
.work:hover { padding-left: 12px; }
.work__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
}
.work__title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 1.8vw, 1.6rem);
  font-variation-settings: 'opsz' 48;
  line-height: 1.2;
}
.work__title small {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--ink-mute);
  letter-spacing: 0.04em;
  margin-top: 6px;
}
.work__desc { color: var(--ink-soft); font-size: 0.95rem; line-height: 1.55; }
.work__year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
}

/* —— 引文 —— */
.pull {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  font-variation-settings: 'opsz' 96, 'SOFT' 80;
  line-height: 1.25;
  color: var(--ink);
  max-width: 22ch;
  font-style: italic;
  position: relative;
  padding-left: clamp(20px, 3vw, 36px);
}
.pull::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--accent);
}
.pull cite {
  display: block;
  margin-top: 24px;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-style: normal;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* —— 服务/原则 列表 —— */
.steps { display: flex; flex-direction: column; }
.step {
  display: grid;
  grid-template-columns: 60px 200px 1fr;
  gap: clamp(20px, 3vw, 48px);
  padding: clamp(28px, 4vw, 48px) 0;
  border-top: 1px solid var(--rule);
  align-items: start;
}
.step:last-child { border-bottom: 1px solid var(--rule); }
.step__num {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-variation-settings: 'opsz' 48;
  color: var(--accent);
  font-style: italic;
  line-height: 1;
}
.step__name {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2vw, 1.9rem);
  font-variation-settings: 'opsz' 48;
  line-height: 1.15;
}
.step__name small {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--ink-mute);
  margin-top: 8px;
  letter-spacing: 0.04em;
}
.step__body p { color: var(--ink-soft); }
.step__body ul {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.step__body li {
  font-size: 0.92rem;
  color: var(--ink-soft);
  padding-left: 18px;
  position: relative;
}
.step__body li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* —— 团队 —— */
.team {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.member {
  padding: clamp(24px, 3vw, 40px);
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.member__role {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.member__title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-variation-settings: 'opsz' 36;
  line-height: 1.2;
}
.member__bio { color: var(--ink-soft); font-size: 0.92rem; margin-top: 8px; }

/* ===========================================================
   页脚
   =========================================================== */
.colophon {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(64px, 8vw, 120px) 0 36px;
  margin-top: clamp(64px, 9vw, 120px);
}
.colophon__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin);
}
.colophon__top {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 64px);
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(239, 235, 224, 0.18);
}
.colophon h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper);
  opacity: 0.55;
  font-weight: 500;
  margin-bottom: 20px;
  font-variation-settings: normal;
}
.colophon__brand {
  font-family: var(--font-display);
  font-variation-settings: 'opsz' 96, 'SOFT' 30;
  font-size: clamp(1.8rem, 2.6vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  max-width: 14ch;
}
.colophon__brand em {
  font-style: italic;
  color: #D7A28E;
  font-variation-settings: 'opsz' 96, 'SOFT' 100;
}
.colophon ul li { margin-bottom: 10px; font-size: 0.92rem; }
.colophon ul li a { opacity: 0.78; transition: opacity 0.2s ease; }
.colophon ul li a:hover { opacity: 1; }
.colophon ul li .meta {
  display: block;
  font-size: 0.78rem;
  opacity: 0.55;
  margin-top: 2px;
}
.colophon__bottom {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: center;
  padding-top: 28px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper);
  opacity: 0.5;
}
.colophon__bottom .center { text-align: center; }
.colophon__bottom .right { text-align: right; }

/* ===========================================================
   页面大标头（次级页面）
   =========================================================== */
.page-head {
  padding: clamp(72px, 10vw, 140px) 0 clamp(40px, 6vw, 80px);
  border-bottom: 1px solid var(--rule);
}
.page-head__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--margin);
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 5fr);
  gap: clamp(28px, 5vw, 80px);
  align-items: end;
}
.page-head__eyebrow { margin-bottom: 20px; }
.page-head__title {
  font-family: var(--font-display);
  font-variation-settings: 'opsz' 144, 'SOFT' 40;
  font-size: clamp(2.2rem, 5.4vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.page-head__title em {
  font-style: italic;
  color: var(--accent);
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
}
.page-head__intro {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
  line-height: 1.55;
  color: var(--ink-soft);
  font-style: italic;
  max-width: 42ch;
  border-top: 1px solid var(--rule);
  padding-top: 20px;
}

/* —— 章节小标头 —— */
.section-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 24px;
  margin-bottom: clamp(32px, 4vw, 56px);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}
.section-head h2 {
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
  font-variation-settings: 'opsz' 72;
  max-width: 22ch;
}
.section-head .meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ===========================================================
   联系页表单
   =========================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 5fr);
  gap: clamp(28px, 5vw, 80px);
  align-items: start;
}
.contact-aside { position: sticky; top: 96px; }
.contact-aside h2 { margin-top: 12px; }
.contact-aside p { color: var(--ink-soft); margin-top: 18px; }

.office {
  border-top: 1px solid var(--rule);
  padding: 22px 0;
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px;
  align-items: baseline;
}
.office:last-child { border-bottom: 1px solid var(--rule); }
.office__city {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-variation-settings: 'opsz' 36;
}
.office__line {
  color: var(--ink-soft);
  font-size: 0.92rem;
  line-height: 1.55;
}
.office__line strong {
  display: block;
  font-weight: 500;
  color: var(--ink);
  font-size: 0.88rem;
  margin-bottom: 4px;
  letter-spacing: 0.04em;
}

.form {
  border-top: 1px solid var(--rule);
}
.field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: clamp(16px, 3vw, 40px);
  padding: clamp(20px, 2.6vw, 32px) 0;
  border-bottom: 1px solid var(--rule-soft);
  align-items: start;
}
.field label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding-top: 12px;
}
.field label .req { color: var(--accent); margin-left: 6px; }
.field .control { width: 100%; }
.field input[type="text"],
.field input[type="email"],
.field input[type="url"],
.field select,
.field textarea {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--rule);
  padding: 10px 0;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--ink);
  transition: border-color 0.2s ease;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 0;
  border-bottom-color: var(--accent);
}
.field textarea {
  min-height: 120px;
  resize: vertical;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  padding-top: 14px;
}
.field .hint {
  display: block;
  font-size: 0.78rem;
  color: var(--ink-mute);
  margin-top: 8px;
  font-family: var(--font-sans);
}
.field--check {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 30px;
}
.field--check .control {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: 0.88rem;
  color: var(--ink-soft);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}
.chip:hover { border-color: var(--ink); color: var(--ink); }
.chip.is-on {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.form__actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  gap: 24px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 28px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-radius: 0;
  transition: background 0.2s ease, color 0.2s ease;
}
.btn:hover { background: var(--accent); }
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
}
.btn--ghost:hover {
  background: var(--ink);
  color: var(--paper);
}
.form__note {
  font-size: 0.82rem;
  color: var(--ink-mute);
  max-width: 32ch;
  line-height: 1.5;
}

/* ===========================================================
   志（journal）
   =========================================================== */
.featured {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
  gap: clamp(28px, 5vw, 80px);
  align-items: start;
  padding: clamp(32px, 4vw, 56px) 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.featured__visual {
  aspect-ratio: 4 / 3;
  background: var(--paper-deep);
  position: relative;
  overflow: hidden;
}
.featured__visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(122, 46, 31, 0.18), transparent 50%),
    linear-gradient(135deg, transparent 40%, rgba(122, 46, 31, 0.08));
}
.featured__caption {
  position: absolute;
  bottom: 16px;
  left: 16px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: var(--paper);
  padding: 4px 10px;
}
.featured__kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}
.featured__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-variation-settings: 'opsz' 96, 'SOFT' 50;
  line-height: 1.15;
  margin: 14px 0 18px;
}
.featured__title a:hover { color: var(--accent); }
.featured__excerpt {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--ink-soft);
  font-style: italic;
  max-width: 44ch;
}
.featured__meta {
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: flex;
  gap: 18px;
}
.featured__meta span + span::before {
  content: '·';
  margin-right: 18px;
  color: var(--rule);
}

.journal-list {
  display: flex;
  flex-direction: column;
}
.entry {
  display: grid;
  grid-template-columns: 110px 1fr 1.5fr auto;
  gap: clamp(20px, 3vw, 48px);
  padding: clamp(24px, 3vw, 40px) 0;
  border-top: 1px solid var(--rule-soft);
  align-items: baseline;
}
.entry:last-child { border-bottom: 1px solid var(--rule-soft); }
.entry__date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
}
.entry__date strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-variation-settings: 'opsz' 36;
  color: var(--ink);
  font-weight: 400;
  line-height: 1;
  margin-bottom: 6px;
}
.entry__title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  font-variation-settings: 'opsz' 48;
  line-height: 1.2;
}
.entry__title a:hover { color: var(--accent); }
.entry__title .kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
  font-variation-settings: normal;
  font-weight: 500;
}
.entry__excerpt {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 44ch;
}
.entry__time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
}

/* 分类侧栏 */
.cat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin-bottom: clamp(40px, 5vw, 72px);
}
.cat {
  padding: 18px 24px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border-right: 1px solid var(--rule);
  cursor: pointer;
  transition: all 0.2s ease;
}
.cat:last-child { border-right: 0; }
.cat .count { color: var(--ink-mute); margin-left: 6px; }
.cat:hover { color: var(--ink); }
.cat.is-on { background: var(--ink); color: var(--paper); }
.cat.is-on .count { color: var(--paper); opacity: 0.55; }

/* ===========================================================
   实践页
   =========================================================== */
.scope {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.scope__cell {
  padding: clamp(24px, 3vw, 36px);
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.scope__cell .k {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: block;
  margin-bottom: 8px;
}
.scope__cell .v {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-variation-settings: 'opsz' 36;
  color: var(--ink);
}

/* ===========================================================
   响应式
   =========================================================== */
@media (max-width: 960px) {
  .hero__inner,
  .split,
  .split--reverse,
  .page-head__inner,
  .contact-grid,
  .featured {
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: start;
  }
  .split__head,
  .contact-aside { position: static; }
  .pillars { grid-template-columns: 1fr; }
  .pillar { border-right: 0; border-bottom: 1px solid var(--rule); }
  .pillar:last-child { border-bottom: 0; }
  .work { grid-template-columns: 40px 1fr; }
  .work__desc, .work__year {
    grid-column: 2;
  }
  .step { grid-template-columns: 40px 1fr; }
  .step__body { grid-column: 2; }
  .team { grid-template-columns: 1fr; }
  .scope { grid-template-columns: 1fr 1fr; }
  .entry { grid-template-columns: 1fr; }
  .entry__date, .entry__excerpt, .entry__time { grid-column: 1; }
  .colophon__top { grid-template-columns: 1fr 1fr; }
  .field { grid-template-columns: 1fr; }
  .field label { padding-top: 0; }
  .masthead__nav { display: none; }
  .masthead__menu { display: inline-flex; justify-self: end; }
  .masthead__inner { grid-template-columns: 1fr auto; }
  .masthead__folio { display: none; }
  .colophon__bottom { grid-template-columns: 1fr; text-align: left; gap: 12px; }
  .colophon__bottom .center, .colophon__bottom .right { text-align: left; }
}

@media (max-width: 560px) {
  .scope { grid-template-columns: 1fr; }
  .colophon__top { grid-template-columns: 1fr; }
  .pillars, .cat-row { font-size: 0.9em; }
  .featured__visual { aspect-ratio: 3 / 2; }
}

/* —— 减少动效 —— */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* —— 键盘焦点 —— */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* —— 选区 —— */
::selection {
  background: var(--ink);
  color: var(--paper);
}