/* 基础变量：集中管理颜色、边框和间距，保持灰白、细线、图纸感 */
:root {
  --color-bg: #f3f3f0;
  --color-paper: #fbfbf8;
  --color-surface: rgba(255, 255, 252, 0.78);
  --color-text: #20211f;
  --color-muted: #70716b;
  --color-faint: #aaa9a1;
  --color-line: #d7d6cd;
  --color-line-strong: #9c9b92;
  --color-accent: #4f5b55;
  --max-width: 1360px;
  --side-gap: clamp(20px, 4.5vw, 76px);
  --section-gap: clamp(44px, 5.5vw, 78px);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(32, 33, 31, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(32, 33, 31, 0.03) 1px, transparent 1px),
    var(--color-bg);
  background-size: 96px 96px;
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.72;
}

a {
  color: inherit;
  text-decoration: none;
}

p,
h1,
h2,
h3,
figure,
dl,
dd {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
}

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px var(--side-gap);
  border-bottom: 1px solid var(--color-line);
  background: rgba(243, 243, 240, 0.9);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 12px;
  color: #30312e;
  font-size: 13px;
  text-transform: uppercase;
}

.brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--color-text);
  font-size: 12px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px 18px;
  color: var(--color-muted);
  font-size: 14px;
}

.site-nav a {
  transition: color 0.2s ease;
}

.site-nav a:hover {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--color-line);
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1px;
  margin: 5px auto;
  background: var(--color-text);
}

/* 通用版式：左侧编号与右侧内容统一对齐 */
.section-grid {
  display: grid;
  grid-template-columns: minmax(120px, 210px) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  width: min(var(--max-width), calc(100% - var(--side-gap) * 2));
  margin: 0 auto;
}

.content-section {
  padding: var(--section-gap) 0;
  border-top: 1px solid var(--color-line);
}

.compact-section {
  padding: clamp(38px, 4.8vw, 66px) 0;
}

.section-label,
.hero-meta,
.hero-note,
.eyebrow,
.card-number,
.plate-label,
.section-note,
.work-index,
.work-title-en {
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.45;
  text-transform: uppercase;
}

.section-label {
  position: sticky;
  top: 88px;
  align-self: start;
  padding-top: 8px;
}

.section-content {
  max-width: 1040px;
}

.section-content h2 {
  max-width: 790px;
  margin: 6px 0 20px;
  font-size: clamp(30px, 4vw, 50px);
  font-weight: 500;
  line-height: 1.16;
}

.text-block {
  display: grid;
  gap: 18px;
  max-width: 760px;
  color: #383936;
  font-size: 17px;
}

.section-heading-row {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.section-note {
  max-width: 230px;
  padding-top: 12px;
  text-align: right;
}

/* 首页：图纸感大标题区域 */
.hero {
  width: min(var(--max-width), calc(100% - var(--side-gap) * 2));
  min-height: calc(100vh - 67px);
  margin: 0 auto;
  padding: clamp(24px, 3vw, 38px) 0 clamp(34px, 5vw, 58px);
}

.hero-drawing {
  position: relative;
  min-height: calc(100vh - 118px);
  display: grid;
  grid-template-columns: minmax(140px, 230px) minmax(0, 1fr);
  grid-template-rows: auto 1fr auto;
  gap: 0;
  border: 1px solid var(--color-line-strong);
  background:
    linear-gradient(90deg, rgba(79, 91, 85, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(79, 91, 85, 0.07) 1px, transparent 1px),
    rgba(251, 251, 248, 0.62);
  background-size: 48px 48px;
}

.hero-drawing::before,
.hero-drawing::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.hero-drawing::before {
  inset: 18px;
  border: 1px solid rgba(156, 155, 146, 0.55);
}

.hero-drawing::after {
  top: 0;
  bottom: 0;
  left: min(230px, 20vw);
  width: 1px;
  background: var(--color-line);
}

.hero-meta {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(140px, 230px) 1fr 1fr;
  border-bottom: 1px solid var(--color-line);
}

.hero-meta span,
.hero-note span {
  padding: 14px 18px;
  border-right: 1px solid var(--color-line);
}

.hero-meta span:last-child,
.hero-note span:last-child {
  border-right: 0;
}

.hero-title-block {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 58vh;
  padding: clamp(40px, 6vw, 84px) clamp(28px, 5vw, 76px);
}

.hero h1 {
  display: grid;
  gap: 6px;
  margin: 18px 0 26px;
  font-size: clamp(72px, 10vw, 176px);
  font-weight: 500;
  line-height: 0.9;
}

.hero h1 span:last-child {
  color: transparent;
  -webkit-text-stroke: 1px var(--color-text);
}

.hero-subtitle {
  max-width: 640px;
  color: #373936;
  font-size: clamp(18px, 2.4vw, 30px);
}

.hero-statement {
  max-width: 720px;
  margin-top: 18px;
  color: #4b4d49;
  font-size: clamp(15px, 1.5vw, 17px);
}

.hero-plate {
  grid-column: 1;
  grid-row: 2;
  display: flex;
  flex-direction: column;
  justify-content: end;
  min-height: 260px;
  padding: 18px;
  border-right: 1px solid var(--color-line);
}

.hero-keywords {
  display: grid;
  gap: 7px;
  margin-top: 14px;
}

.hero-keywords span {
  display: block;
  padding: 6px 0;
  border-top: 1px solid var(--color-line);
  color: #30312e;
  font-size: 14px;
}

.hero-note {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(140px, 230px) minmax(0, 1fr);
  border-top: 1px solid var(--color-line);
}

/* 首页增强版 Hero：超大文字排版 + 图纸式标注 + 克制按钮 */
.hero-impact {
  overflow: hidden;
}

.hero-impact .hero-title-block {
  position: relative;
  display: grid;
  align-content: center;
  min-height: 60vh;
  padding: clamp(34px, 4.5vw, 64px) clamp(24px, 5vw, 76px);
}

.hero-intro {
  position: relative;
  z-index: 4;
  max-width: 620px;
  color: #4b4d49;
  font-size: clamp(15px, 1.5vw, 20px);
  animation: heroFadeUp 0.7s ease both;
}

.hero-display {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 0;
  max-width: 100%;
  min-width: 0;
  margin: clamp(18px, 3vw, 34px) 0 clamp(30px, 4.5vw, 58px);
  font-size: clamp(82px, 10.8vw, 176px);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 0.84;
  text-transform: uppercase;
  animation: heroRise 0.85s ease 0.08s both;
  will-change: transform;
}

.hero-display span:last-child {
  color: transparent;
  -webkit-text-stroke: 1px var(--color-text);
}

.hero-copy {
  position: relative;
  z-index: 4;
  max-width: 760px;
  animation: heroFadeUp 0.75s ease 0.32s both;
}

.hero-actions {
  position: relative;
  z-index: 4;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
  animation: heroFadeUp 0.75s ease 0.45s both;
}

.hero-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--color-text);
  font-size: 14px;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.hero-button:hover {
  transform: translateY(-2px);
}

.hero-button:focus-visible {
  outline: 1px solid var(--color-text);
  outline-offset: 3px;
}

.hero-button-primary {
  background: var(--color-text);
  color: var(--color-paper);
}

.hero-button-primary:hover {
  background: transparent;
  color: var(--color-text);
}

.hero-button-secondary {
  background: rgba(251, 251, 248, 0.72);
  color: var(--color-text);
}

.hero-button-secondary:hover {
  background: var(--color-text);
  color: var(--color-paper);
}

.hero-tags {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.hero-tags span {
  display: block;
  padding: 7px 0;
  border-top: 1px solid var(--color-line);
  color: #30312e;
  font-size: 13px;
}

.site-nav a {
  position: relative;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  height: 1px;
  background: var(--color-text);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.site-nav a:hover::after {
  transform: scaleX(1);
}

.work-card,
.work-index,
.work-text h3 {
  transition: transform 0.25s ease, color 0.25s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.work-card:hover .work-index,
.work-card:hover .work-text h3 {
  transform: translateX(4px);
}

.reveal-item {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal-item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroRise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 关于我 */
.profile-section {
  padding-top: clamp(42px, 5vw, 72px);
  padding-bottom: clamp(42px, 5vw, 72px);
}

.profile-layout {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 42px);
  align-items: start;
}

.profile-main {
  display: grid;
  gap: 26px;
}

.profile-research {
  grid-column: 2;
}

.profile-block {
  border-top: 1px solid var(--color-line-strong);
}

.profile-block-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 9px 0 12px;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 12px;
  text-transform: uppercase;
}

.profile-block-heading span:last-child {
  color: #4f504b;
  text-transform: none;
}

.profile-about-text {
  gap: 14px;
  max-width: none;
  padding-top: 14px;
  font-size: 15px;
  line-height: 1.82;
}

.education-compact,
.research-list {
  display: grid;
}

.education-item {
  display: grid;
  grid-template-columns: minmax(98px, 128px) minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-line);
}

.education-time {
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.6;
}

.education-body h3 {
  margin: 5px 0 2px;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.35;
}

.education-body p {
  color: var(--color-muted);
  font-size: 14px;
}

.research-mini-card {
  display: grid;
  grid-template-columns: 54px minmax(210px, 0.36fr) minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 3px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-line);
}

.research-mini-card .card-number {
  grid-row: auto;
}

.research-mini-card h3 {
  align-self: start;
  margin: 0;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.35;
  white-space: nowrap;
}

.research-mini-card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.7;
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.profile-panel {
  border-top: 1px solid var(--color-line-strong);
}

.profile-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-paper);
}

.profile-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.profile-info {
  display: grid;
  margin-top: 10px;
}

.profile-info div {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  border-bottom: 1px solid var(--color-line);
}

.profile-info div:first-child {
  border-top: 1px solid var(--color-line);
}

.profile-info dt,
.profile-info dd {
  padding: 9px 0;
  font-size: 13px;
}

.profile-info dt {
  color: var(--color-muted);
}

.profile-info dd {
  color: #30312e;
  text-align: right;
}

/* 教育时间轴 */
.timeline {
  display: grid;
  border-top: 1px solid var(--color-line-strong);
}

.timeline-item {
  display: grid;
  grid-template-columns: minmax(150px, 220px) minmax(0, 1fr);
  border-bottom: 1px solid var(--color-line);
}

.timeline-time {
  padding: 22px 22px 22px 0;
  color: var(--color-muted);
  font-size: 13px;
}

.timeline-body {
  padding: 22px 0 22px 28px;
  border-left: 1px solid var(--color-line);
}

.timeline-body h3 {
  margin: 8px 0 4px;
  font-size: 24px;
  font-weight: 500;
}

.timeline-body p,
.meta-list {
  color: var(--color-muted);
  font-size: 15px;
}

.meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.meta-list span {
  padding: 4px 10px;
  border: 1px solid var(--color-line);
  background: rgba(251, 251, 248, 0.65);
}

/* 研究方向：学术图版卡片系统 */
.research-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--color-line-strong);
  border-left: 1px solid var(--color-line);
}

.research-card {
  min-height: 200px;
  display: grid;
  grid-template-rows: auto auto 1fr;
  padding: 22px;
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background:
    linear-gradient(90deg, rgba(32, 33, 31, 0.025) 1px, transparent 1px),
    linear-gradient(180deg, rgba(32, 33, 31, 0.025) 1px, transparent 1px),
    var(--color-surface);
  background-size: 28px 28px;
}

.research-card-head,
.work-index {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.research-card h3,
.work-card h3,
.skill-group h3 {
  margin: 20px 0 10px;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.35;
}

.research-card p,
.work-card p {
  color: var(--color-muted);
  font-size: 15px;
}

/* 精选作品：重点项目与空间作品索引 */
.works-section .section-heading-row { margin-bottom: 0; }

.works-group { margin-top: clamp(32px, 4vw, 48px); }

.works-group + .works-group { margin-top: clamp(54px, 6vw, 76px); }

.works-subsection-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 12px;
}

.works-subsection-heading h3,
.works-subsection-heading p {
  color: var(--color-muted);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.5;
  text-transform: uppercase;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--color-line-strong);
  border-left: 1px solid var(--color-line);
}

.featured-card {
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr;
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: rgba(251, 251, 248, 0.42);
  color: inherit;
  text-decoration: none;
  transition: background-color 180ms ease, border-color 180ms ease;
}

.featured-media {
  display: grid;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  place-items: center;
  border-bottom: 1px solid var(--color-line);
  background:
    linear-gradient(90deg, rgba(79, 91, 85, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, rgba(79, 91, 85, 0.045) 1px, transparent 1px),
    rgba(238, 238, 234, 0.72);
  background-size: 32px 32px;
}

.featured-media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform 260ms ease;
}

.featured-card--along .featured-media img {
  object-position: center;
}

.featured-primary-link,
.featured-title-link {
  color: inherit;
  text-decoration: none;
}

.featured-card-body {
  display: flex;
  min-height: 230px;
  flex-direction: column;
  padding: clamp(18px, 2.4vw, 28px);
}

.featured-meta,
.featured-status {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  color: var(--color-muted);
  font-size: 10px;
  letter-spacing: 0.07em;
  line-height: 1.5;
  text-transform: uppercase;
}

.featured-meta span:last-child { text-align: right; }

.featured-card h4 {
  margin: 28px 0 10px;
  font-size: clamp(26px, 2.4vw, 36px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.featured-card h4 span {
  color: var(--color-muted);
  font-size: 0.65em;
  font-weight: 400;
  letter-spacing: 0.04em;
}

.featured-card-body > p {
  max-width: 480px;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.75;
}

.featured-status {
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--color-line);
}

.featured-actions {
  display: flex;
  gap: 18px;
  margin-top: auto;
  padding-top: 24px;
  border-top: 1px solid var(--color-line);
}

.featured-actions .featured-status {
  flex: 1;
  min-width: 0;
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
  color: var(--color-muted);
  text-decoration: none;
}

.featured-status strong {
  color: #5d5f59;
  font-weight: 500;
  transition: transform 180ms ease;
}

.featured-card:hover,
.featured-card:focus-visible {
  border-color: var(--color-line-strong);
  background: rgba(251, 251, 248, 0.72);
}

.featured-card:hover .featured-media img,
.featured-card:focus-visible .featured-media img {
  transform: scale(1.012);
}

.featured-card:hover .featured-status strong,
.featured-card:focus-visible .featured-status strong {
  transform: translate(2px, -2px);
}

.featured-primary-link:focus-visible,
.featured-title-link:focus-visible,
.featured-actions .featured-status:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

.featured-card:focus-visible {
  position: relative;
  z-index: 1;
  outline: 2px solid var(--color-text);
  outline-offset: -2px;
}

.work-directory {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line-strong);
}

.work-card {
  display: grid;
  grid-template-columns: minmax(104px, 0.45fr) minmax(220px, 0.95fr) minmax(300px, 1.45fr);
  gap: clamp(18px, 2.6vw, 34px);
  align-items: stretch;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-line);
  box-shadow: inset 0 0 0 0 transparent;
}

.work-card:hover .work-text h3 {
  color: #151613;
}

.work-card:hover {
  border-bottom-color: var(--color-line-strong);
  box-shadow: inset 0 -1px 0 var(--color-line-strong);
}

.work-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 5px;
}

.work-card:focus-visible .work-index,
.work-card:focus-visible .work-text h3 { transform: translateX(4px); }

.work-index {
  flex-direction: column;
  justify-content: start;
  min-height: 100%;
  padding-top: 2px;
}

.work-index span:first-child {
  color: #30312e;
}

.work-image-frame {
  display: grid;
  aspect-ratio: 16 / 10;
  align-self: start;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--color-line);
  background:
    linear-gradient(135deg, transparent calc(50% - 1px), #c9c9c1 50%, transparent calc(50% + 1px)),
    linear-gradient(45deg, transparent calc(50% - 1px), #c9c9c1 50%, transparent calc(50% + 1px)),
    #eeeeea;
  color: var(--color-muted);
  font-size: 12px;
  text-transform: uppercase;
}

.work-image-frame.has-image {
  background: #eeeeea;
  cursor: pointer;
}

.work-image-frame img,
.detail-image-frame img {
  width: 100%;
  height: 100%;
  display: none;
  object-fit: cover;
  object-position: center center;
  transform: scale(1);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.work-preview-image {
  filter: none;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.work-image-frame img.is-loaded,
.detail-image-frame img.is-loaded {
  display: block;
}

.work-card:hover .work-image-frame.has-image .work-preview-image.is-loaded {
  opacity: 1;
  transform: scale(1.012);
}

.work-image-frame span,
.detail-image-frame span {
  letter-spacing: 0;
  color: var(--color-muted);
}

.work-text {
  display: flex;
  align-self: stretch;
  flex-direction: column;
  max-width: 560px;
}

.work-text h3 {
  margin-top: 0;
  margin-bottom: 4px;
}

.work-title-en {
  margin-bottom: 14px;
}

.work-summary { line-height: 1.75; }

.work-view {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 12px;
  margin-top: auto;
  padding-top: 18px;
  color: #3f413c;
  font-size: 10px;
  letter-spacing: 0.09em;
  line-height: 1.5;
  text-transform: uppercase;
}

.work-view span { transition: transform 0.2s ease; }

.work-card:hover .work-view span,
.work-card:focus-visible .work-view span { transform: translate(3px, 3px); }

.tag-list,
.skill-tags,
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list,
.tags {
  margin: 0 0 14px;
}

.tag-list span,
.skill-tags span,
.tags span {
  padding: 3px 8px;
  border: 1px solid var(--color-line);
  background: rgba(251, 251, 248, 0.8);
  color: #4f504b;
  font-size: 12px;
}

/* 获奖时间线 */
.awards-timeline {
  display: grid;
  border-top: 1px solid var(--color-line-strong);
}

.award-year {
  display: grid;
  grid-template-columns: minmax(84px, 120px) minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-line);
}

.award-year h3 {
  margin: 0;
  color: #30312e;
  font-size: 20px;
  font-weight: 500;
}

.award-year ul {
  display: grid;
  gap: 10px;
  max-width: 860px;
  list-style: none;
}

.award-year li {
  position: relative;
  padding-left: 14px;
  color: #4b4d49;
  font-size: 15px;
  line-height: 1.75;
}

.award-year li::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 0;
  width: 4px;
  height: 4px;
  background: var(--color-muted);
}

/* 软件技能 */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--color-line-strong);
  border-left: 1px solid var(--color-line);
}

.skill-group {
  min-height: 138px;
  padding: 20px;
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background:
    linear-gradient(90deg, rgba(32, 33, 31, 0.025) 1px, transparent 1px),
    linear-gradient(180deg, rgba(32, 33, 31, 0.025) 1px, transparent 1px),
    rgba(255, 255, 252, 0.62);
  background-size: 28px 28px;
}

.skill-group h3 {
  margin-top: 0;
  margin-bottom: 14px;
  font-size: 18px;
}

.skill-subgroup {
  display: grid;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--color-line);
}

.skill-subgroup + .skill-subgroup {
  margin-top: 14px;
}

.skill-subgroup h4 {
  margin: 0;
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
}

.line-list {
  display: grid;
  list-style: none;
}

.line-list li {
  padding: 8px 0;
  border-top: 1px solid var(--color-line);
  color: #4b4d49;
  font-size: 14px;
}

.line-list li:last-child {
  border-bottom: 1px solid var(--color-line);
}

/* 联系方式 */
.contact-section {
  padding-top: clamp(38px, 4.8vw, 66px);
  padding-bottom: clamp(52px, 6vw, 82px);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--color-line-strong);
  border-left: 1px solid var(--color-line);
}

.contact-card {
  appearance: none;
  display: grid;
  gap: 8px;
  min-height: 128px;
  padding: 18px 20px;
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  background: rgba(255, 255, 252, 0.62);
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.25s ease, background 0.25s ease;
}

.contact-card:hover {
  border-color: var(--color-line-strong);
  background: rgba(255, 255, 252, 0.82);
}

.contact-card span {
  color: var(--color-muted);
  font-size: 12px;
  text-transform: uppercase;
}

.contact-card strong {
  color: #30312e;
  font-size: clamp(14px, 1.35vw, 17px);
  font-weight: 500;
  word-break: break-word;
}

.contact-card em {
  align-self: end;
  color: var(--color-muted);
  font-size: 12px;
  font-style: normal;
  text-transform: uppercase;
  transition: transform 0.25s ease, color 0.25s ease;
}

.contact-card:hover em {
  color: var(--color-text);
  transform: translateX(4px);
}

.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: none;
  place-items: center;
  padding: 22px;
}

.qr-modal.is-open {
  display: grid;
}

.qr-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(32, 33, 31, 0.52);
}

.qr-modal-panel {
  position: relative;
  z-index: 1;
  width: min(360px, 100%);
  padding: 22px;
  border: 1px solid var(--color-line-strong);
  background:
    linear-gradient(90deg, rgba(32, 33, 31, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(32, 33, 31, 0.03) 1px, transparent 1px),
    var(--color-paper);
  background-size: 32px 32px;
}

.qr-modal-panel h2 {
  margin: 4px 0 18px;
  font-size: 24px;
  font-weight: 500;
}

.qr-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 34px;
  height: 34px;
  border: 1px solid var(--color-line);
  background: rgba(255, 255, 252, 0.72);
  color: var(--color-text);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.qr-frame {
  display: grid;
  aspect-ratio: 1 / 1;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--color-line);
  background:
    linear-gradient(135deg, transparent calc(50% - 1px), #c9c9c1 50%, transparent calc(50% + 1px)),
    linear-gradient(45deg, transparent calc(50% - 1px), #c9c9c1 50%, transparent calc(50% + 1px)),
    #eeeeea;
}

.qr-frame img {
  width: 100%;
  height: 100%;
  display: none;
  object-fit: contain;
  background: var(--color-paper);
}

.qr-frame img.is-loaded {
  display: block;
}

.qr-frame span {
  color: var(--color-muted);
  font-size: 12px;
  text-transform: uppercase;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px var(--side-gap);
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 13px;
}

/* 作品详情页 */
.project-page {
  width: min(var(--max-width), calc(100% - var(--side-gap) * 2));
  margin: 0 auto;
  padding: clamp(34px, 5vw, 70px) 0 clamp(58px, 7vw, 96px);
}

.project-hero {
  display: grid;
  grid-template-columns: minmax(120px, 210px) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  padding-bottom: clamp(28px, 4vw, 48px);
  border-bottom: 1px solid var(--color-line-strong);
}

.project-kicker,
.project-meta,
.project-back {
  color: var(--color-muted);
  font-size: 12px;
  text-transform: uppercase;
}

.project-back {
  display: inline-block;
  margin-top: 18px;
}

.project-title h1 {
  max-width: 1080px;
  margin: 6px 0 8px;
  font-size: clamp(30px, 3vw, 48px);
  font-weight: 500;
  line-height: 1.12;
}

.project-title .work-title-en {
  margin-bottom: 18px;
}

.detail-gallery {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  padding-top: clamp(28px, 4vw, 48px);
}

.detail-image-frame {
  display: grid;
  min-height: 260px;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--color-line);
  background:
    linear-gradient(135deg, transparent calc(50% - 1px), #c9c9c1 50%, transparent calc(50% + 1px)),
    linear-gradient(45deg, transparent calc(50% - 1px), #c9c9c1 50%, transparent calc(50% + 1px)),
    #eeeeea;
}

.detail-image-frame.has-image {
  display: block;
  min-height: 0;
  background: transparent;
}

.detail-image-frame img {
  height: auto;
  object-fit: contain;
  transform: none;
  transition: none;
}

.fuhui-gallery {
  display: block;
}

.fuhui-spread {
  display: flex;
  width: 100%;
  gap: 0;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.fuhui-spread:last-child {
  margin-bottom: 0;
}

.fuhui-spread .detail-image-frame {
  flex: 0 0 50%;
  width: 50%;
  min-height: 0;
  margin: 0;
  border: 0;
}

.fuhui-spread .detail-image-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.along-gallery {
  display: block;
}

.along-spread {
  display: flex;
  width: 100%;
  height: auto;
  gap: 0;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.along-spread:last-child {
  margin-bottom: 0;
}

.along-gallery .detail-image-frame {
  flex: 0 0 50%;
  width: 50%;
  height: auto;
  min-height: 0;
  margin: 0;
  border: 0;
}

.along-gallery .detail-image-frame img {
  width: 100%;
  display: block;
  height: auto;
  object-fit: contain;
}

/* 窄屏与手机适配 */
@media (max-width: 960px) {
  .site-header {
    align-items: flex-start;
  }

  .nav-toggle {
    display: block;
    flex: 0 0 auto;
  }

  .site-nav {
    position: absolute;
    top: 67px;
    left: var(--side-gap);
    right: var(--side-gap);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border: 1px solid var(--color-line);
    background: var(--color-paper);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 14px 16px;
    border-bottom: 1px solid var(--color-line);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }

  .section-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .section-label {
    position: static;
    padding-top: 0;
  }

  .section-heading-row {
    display: block;
  }

  .section-note {
    max-width: none;
    padding: 0 0 18px;
    text-align: left;
  }

  .hero {
    min-height: auto;
    padding-top: 26px;
  }

  .hero-drawing,
  .hero-meta,
  .hero-note {
    grid-template-columns: 1fr;
  }

  .hero-drawing {
    min-height: auto;
  }

  .hero-drawing::after {
    display: none;
  }

  .hero-meta span,
  .hero-note span {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .hero-title-block,
  .hero-plate {
    grid-column: 1;
  }

  .hero-title-block {
    min-height: 52vh;
    padding: 48px 22px;
  }

  .hero-impact .hero-title-block {
    min-height: auto;
    padding: 46px 22px 38px;
  }

  .hero-intro {
    max-width: 520px;
  }

  .hero-display {
    margin: 18px 0 28px;
    font-size: clamp(70px, 17vw, 122px);
    line-height: 0.86;
  }

  .hero-copy {
    max-width: none;
  }

  .hero-actions {
    margin-top: 18px;
  }

  .hero-button {
    min-width: 138px;
  }

  .hero-plate {
    grid-row: auto;
    min-height: auto;
    border-top: 1px solid var(--color-line);
    border-right: 0;
  }

  .profile-layout,
  .about-layout,
  .timeline-item,
  .research-board,
  .skills-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .profile-main {
    gap: 24px;
  }

  .profile-research {
    grid-column: auto;
    min-width: 0;
  }

  .profile-panel {
    max-width: 420px;
  }

  .timeline-body {
    padding-left: 0;
    border-left: 0;
  }

  .timeline-time {
    padding-bottom: 0;
  }

  .work-card {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .work-index {
    flex-direction: row;
  }

  .work-image-frame {
    width: 100%;
    max-width: 520px;
  }

  .work-preview-image {
    filter: grayscale(0%) saturate(1) contrast(1);
  }

  .award-year {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .project-hero {
    grid-template-columns: 1fr;
    gap: 18px;
  }

}

@media (max-width: 560px) {
  .fuhui-spread {
    display: block;
  }

  .fuhui-spread .detail-image-frame {
    width: 100%;
  }

  .fuhui-spread .detail-image-frame + .detail-image-frame {
    margin-top: clamp(18px, 3vw, 30px);
  }
}

@media (min-width: 841px) and (max-width: 960px) {
  .work-card {
    grid-template-columns: minmax(96px, 0.38fr) minmax(210px, 0.95fr) minmax(260px, 1.25fr);
    gap: clamp(16px, 2vw, 24px);
  }

  .work-index {
    flex-direction: column;
  }

  .work-image-frame {
    max-width: none;
  }
}

@media (max-width: 700px) {
  .featured-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  :root {
    --side-gap: 16px;
    --section-gap: 54px;
  }

  .brand span:last-child {
    display: none;
  }

  .hero h1 {
    font-size: 58px;
  }

  .hero .hero-display {
    font-size: clamp(48px, 15vw, 66px);
    line-height: 0.9;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-button {
    width: 100%;
  }

  .section-content h2 {
    font-size: 28px;
  }

  .research-card,
  .skill-group {
    min-height: auto;
  }

  .work-image-frame,
  .profile-panel {
    max-width: none;
  }

  .works-subsection-heading {
    display: grid;
    gap: 4px;
  }

  .works-group { margin-top: 30px; }

  .works-group + .works-group { margin-top: 52px; }

  .featured-card-body {
    min-height: 218px;
    padding: 20px 18px;
  }

  .featured-card h4 { margin-top: 24px; }

  .featured-meta { gap: 12px; }

  .work-card {
    gap: 14px;
    padding: 24px 0;
  }

  .work-index {
    flex-direction: column;
    gap: 4px;
  }

  .work-view {
    min-height: 44px;
    padding-top: 16px;
  }

  .profile-info div {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .profile-block-heading,
  .education-item,
  .research-mini-card {
    grid-template-columns: 1fr;
  }

  .profile-block-heading {
    display: grid;
    gap: 2px;
  }

  .education-item {
    gap: 6px;
  }

  .research-mini-card {
    gap: 6px;
  }

  .research-mini-card .card-number {
    grid-row: auto;
  }

  .research-mini-card h3 {
    white-space: normal;
  }

  .site-footer {
    flex-direction: column;
  }
}

/* Hero V2：规则限定在首屏，沿用全站变量与系统字体。 */
.hero.hero-v2 {
  width: min(1320px, calc(100% - var(--side-gap) * 2));
  min-height: 0;
  scroll-margin-top: 80px;
  padding: 28px 0 36px;
}

.hero-sheet {
  border: 1px solid var(--color-line-strong);
  background:
    linear-gradient(90deg, rgba(79, 91, 85, 0.045) 1px, transparent 1px),
    linear-gradient(180deg, rgba(79, 91, 85, 0.045) 1px, transparent 1px),
    rgba(251, 251, 248, 0.62);
  background-size: 48px 48px;
}

.hero-v2-meta {
  display: grid;
  grid-template-columns: 1fr auto 100px;
  align-items: center;
  gap: 24px;
  padding: 16px 28px;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 11px;
  letter-spacing: 0.12em;
  line-height: 1.5;
}

.hero-sheet-number {
  border-left: 1px solid var(--color-line);
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.hero-v2-body {
  position: relative;
  padding: clamp(48px, 5.2vw, 76px) clamp(28px, 6.4vw, 92px) 48px;
  border-left: 1px solid var(--color-line);
  margin-left: clamp(28px, 4vw, 58px);
}

.hero-v2-body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  width: 1px;
  height: 24px;
  background: var(--color-line-strong);
}

.hero.hero-v2 .hero-v2-name {
  display: block;
  margin: 0;
  font-size: clamp(140px, 13.2vw, 190px);
  font-weight: 600;
  line-height: 0.95;
  letter-spacing: -0.065em;
  white-space: nowrap;
}

.hero-v2-cn {
  margin-top: 18px;
  font-size: clamp(22px, 2vw, 28px);
  line-height: 1.4;
  letter-spacing: 0.2em;
}

.hero-v2-message { margin-top: 36px; }

.hero-v2-manifesto {
  font-size: clamp(30px, 2.5vw, 36px);
  line-height: 1.25;
  letter-spacing: -0.035em;
  font-weight: 400;
}

.hero-v2-manifesto span { display: inline; }

.hero-v2-description {
  max-width: 560px;
  margin-top: 14px;
  color: #555751;
  font-size: clamp(16px, 1.25vw, 18px);
  line-height: 1.85;
}

.hero-v2-action { margin-top: 28px; }

.hero-explore {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 30px;
  min-height: 48px;
  padding: 10px 0;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.09em;
}

.hero-explore::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 3px;
  width: 100%;
  height: 1px;
  background: var(--color-text);
  transform: scaleX(0.36);
  transform-origin: left;
  transition: transform 180ms ease;
}

.hero-explore-arrow {
  font-size: 22px;
  transition: transform 180ms ease;
}

.hero-explore:hover::after,
.hero-explore:focus-visible::after { transform: scaleX(1); }

.hero-explore:hover .hero-explore-arrow,
.hero-explore:focus-visible .hero-explore-arrow { transform: translate(3px, 3px); }

.hero-explore:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 6px;
}

.hero-v2-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px 32px;
  padding: 19px 28px;
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 11px;
  line-height: 1.7;
}

.hero-v2-domains {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  letter-spacing: 0.07em;
}

.hero-v2-affiliation { letter-spacing: 0.015em; }

.hero-enter { animation: heroV2Enter 300ms ease-out both; }
.hero-v2-name { animation-delay: 60ms; }
.hero-v2-cn { animation-delay: 120ms; }
.hero-v2-message { animation-delay: 180ms; }
.hero-v2-action { animation-delay: 240ms; }
.hero-v2-footer { animation-delay: 0ms; }

@keyframes heroV2Enter {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 960px) {
  .hero-v2-meta { grid-template-columns: 1fr auto; gap: 10px 20px; }
  .hero-v2-meta p:nth-child(2) { grid-row: 2; }
  .hero-sheet-number { grid-column: 2; grid-row: 1 / 3; padding-left: 24px; }
  .hero-v2-body { margin-left: 28px; padding: 48px 36px 40px; }
  .hero.hero-v2 .hero-v2-name { font-size: clamp(100px, 16vw, 154px); }
}

@media (max-width: 520px) {
  .hero.hero-v2 { padding: 18px 0 12px; }
  .hero-v2-meta { padding: 14px 18px; font-size: 10px; letter-spacing: 0.07em; }
  .hero-v2-meta p:nth-child(2) { max-width: 190px; }
  .hero-sheet-number { padding-left: 12px; }
  .hero-v2-body { margin-left: 18px; padding: 38px 18px 32px; }
  .hero-v2-body::before { left: 12px; height: 18px; }
  .hero.hero-v2 .hero-v2-name { font-size: clamp(82px, 23vw, 92px); }
  .hero-v2-cn { margin-top: 16px; font-size: 22px; }
  .hero-v2-message { margin-top: 28px; }
  .hero-v2-manifesto { max-width: 310px; font-size: 30px; }
  .hero-v2-manifesto span { display: block; }
  .hero-v2-description { margin-top: 12px; font-size: 16px; }
  .hero-v2-action { margin-top: 22px; }
  .hero-explore { gap: 14px; font-size: 10px; letter-spacing: 0.06em; }
  .hero-v2-footer {
    padding: 16px 18px;
    gap: 12px;
    color: #5f615b;
    font-size: 12px;
    line-height: 1.75;
  }
  .hero-v2-domains { gap: 3px 9px; letter-spacing: 0.045em; }
  .hero-v2-affiliation { line-height: 1.65; }
  .hero-v2 + .profile-section { padding-top: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-v2 .hero-enter { animation: none; opacity: 1; transform: none; }
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal-item {
    opacity: 1;
    transform: none;
  }
}