@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,400;0,500;0,600;1,400&family=Lora:ital,wght@0,400;0,600;1,400&display=swap');

/* 小于768px：整个navbar隐藏 */
@media (max-width: 767px) {
  #mainNav {
    display: none !important;
  }
}

@media (min-width: 768px) and (max-width: 991px) {
  .navbar-brand {
    display: none !important;
  }
}

:root {
  --bg: #F7F5F0;
  --surface: #EDEAE3;
  --text: #1A1814;
  --accent: #c64a2f;
  --green: #4A6741;
  --muted: #9C9589;
  --border: #D8D4CC;
  --mono: 'IBM Plex Mono', monospace;
  --serif: 'Lora', Georgia, serif;
}

/* ── BASE ── */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif);
  cursor: none;
  font-size: 18px;
}

/* ── CURSOR ── */
.cursor {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width .2s, height .2s, background .2s;
}

.cursor.hovering {
  width: 28px;
  height: 28px;
  background: transparent;
  border: 1.5px solid var(--accent);
}

/* ── NAV ── */
.navbar {
  background: rgba(247, 245, 240, 0.95) !important;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
  padding: 18px 0;
}

.navbar.scrolled {
  border-color: var(--border);
}

.navbar-brand {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--text) !important;
}

.navbar-brand span {
  color: var(--accent);
}

.nav-link {
  font-family: var(--mono) !important;
  font-size: 0.8rem !important;
  letter-spacing: .15em !important;
  text-transform: uppercase !important;
  color: var(--muted) !important;
  padding: 6px 12px !important;
  border: 1px solid transparent;
  transition: color .2s, border-color .2s !important;
}

.nav-link:hover {
  color: var(--text) !important;
  border-color: var(--border);
}

.nav-link.hi {
  color: var(--accent) !important;
}

.nav-link.hi:hover {
  border-color: var(--accent);
}

/* ── HERO ── */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  /* nav offset */
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-eyebrow::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}

.hero-title {
  font-family: var(--mono);
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.08rem;
  margin-bottom: 24px;
}

.hero-title em {
  font-style: italic;
  font-family: var(--serif);
  color: var(--accent);
  font-weight: 400;
}

.hero-body {
  font-size: 1.2rem;
  color: var(--muted);
  line-height: 1.85;
  margin-bottom: 32px;
}

.hero-body span {
  color: var(--text);
  font-weight: 600;
  background: linear-gradient(180deg, transparent 60%, hsla(11, 62%, 48%, 0.656) 30%);
}

.hero-body a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: color .2s;
  /* font-style: italic; */
}

.hero-body a:hover {
  color: var(--accent);
}

/* Buttons */
.btn-primary-custom {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--text);
  padding: 11px 26px;
  text-decoration: none;
  border: 1.5px solid var(--text);
  display: inline-block;
  transition: background .2s, border-color .2s;
}

.btn-primary-custom:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}

.btn-ghost {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color .2s;
  position: relative;
}

.btn-ghost::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width .25s;
}

.btn-ghost:hover {
  color: var(--text);
}

.btn-ghost:hover::after {
  width: 100%;
}

.btn-ghost svg {
  transition: transform .2s;
}

.btn-ghost:hover svg {
  transform: translateX(3px);
}

/* Photo */
.hero-photo-wrap {
  position: relative;
  display: inline-block;
}

.hero-photo {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  position: relative;
  z-index: 1;
}

.hero-photo-frame {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 100%;
  height: 100%;
  border: 1.5px solid var(--accent);
  z-index: 0;
}

/* Social icons */
.hero-socials {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 16px;
}

.hero-socials a {
  color: var(--muted);
  text-decoration: none;
  display: flex;
  transition: color .2s, transform .2s;
}

.hero-socials a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

/* ── WORK SECTION ── */
.work-section {
  border-top: 1px solid var(--border);
}

/* Sticky sidebar */
.work-sidebar {
  position: sticky;
  top: 62px;
  height: calc(100vh - 62px);
  border-right: 1px solid var(--border);
  padding: 44px 24px;
  background: var(--bg);
}

.sidebar-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
  display: block;
}

.sidebar-link {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--muted);
  text-decoration: none;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  transition: color .2s, border-color .2s, background .2s;
}

.sidebar-link:hover {
  color: var(--text);
  background: var(--surface);
}

.sidebar-link.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(200, 75, 47, .04);
}

.sidebar-chaper {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--border);
  padding: 16px 12px 6px;
}

/* Work main */
.work-main {
  padding: 60px 48px 20px;
}

.work-block {
  margin-bottom: 72px;
  scroll-margin-top: 80px;
}

.chapter-title {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 12px;
}

.block-header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.block-title {
  font-family: var(--mono);
  font-size: 1.5rem;
  letter-spacing: -.03em;
  text-transform: uppercase;
  color: var(--text);
}

.block-count {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--muted);
}

/* ── PROJECT CARD ── */
.project-card {
  display: flex;
  text-decoration: none;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  margin-bottom: 16px;
  overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease;
  cursor: none;
  height: max-content;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(26, 24, 20, .10);
  color: inherit;
}

.card-img-col {
  width: 100%;
  aspect-ratio: 16/10;
  flex-shrink: 0;
  overflow: hidden;
}

@media (min-width: 992px) {
  .project-card {
    flex-direction: row;
    /* 大屏：图左文右 */
    height: 400px;
  }

  .card-img-col {
    width: 40%;
  }
}


.card-img-col img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .4s ease;
}

.project-card:hover .card-img-col img {
  transform: scale(1.04);
}

.card-placeholder {
  width: 100%;
  height: 100%;
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--muted);
  letter-spacing: .1em;
  transition: transform .4s ease;
}

.project-card:hover .card-placeholder {
  transform: scale(1.04);
}

/* Data Analysis grid cards */
.analysis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.analysis-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: none;
  transition: transform .25s ease, box-shadow .25s ease;
  overflow: hidden;
}

.analysis-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(26, 24, 20, .10);
  color: inherit;
}

.analysis-card-img {
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.analysis-card-img img {
  height: 100%;
  width: auto;
  object-fit: cover;
  transition: transform .4s ease;
  margin: auto 0;
}

.analysis-card:hover .analysis-card-img img {
  transform: scale(1.03);
}

.analysis-card-body {
  padding: 16px 20px 20px;
}

/* Writing cards — narrower image */

.writing-card .card-placeholder {
  min-height: 140px;
}

.card-body-custom {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.writing-pub {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--accent);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.card-title-custom {
  font-family: var(--mono);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 8px;
  color: var(--text);
}

.card-desc {
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 14px;
}

.card-meta {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--muted);
  letter-spacing: .06em;
}

/* Writing two-column grid */
.writing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.writing-grid .writing-card {
  flex-direction: column;
  display: block;
  height: auto;
}

.writing-grid .card-img-col {
  width: 100%;
  aspect-ratio: 16/10;
  flex-shrink: 0;
}

.writing-grid .card-img-col img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}


/* Tags */
.tag {
  font-family: var(--mono);
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 2px;
  letter-spacing: .05em;
  font-weight: 500;
  display: inline-block;
  margin: 0 4px 4px 0;
}

.tag-red {
  background: var(--accent);
  color: #F7F5F0;
}

.tag-green {
  background: var(--green);
  color: #F7F5F0;
}

.tag-yellow {
  background: #e4ab1b;
  color: var(--text);
}


.tag-dark {
  background: var(--text);
  color: #F7F5F0;
}

.tag-outline {
  border: 1px solid var(--border);
  color: var(--muted);
}

/* Tinted placeholders */
.tint-1 {
  background: #E5E0D5;
}

.tint-2 {
  background: #D8DDD4;
}

.tint-3 {
  background: #D4D8DD;
}

.tint-4 {
  background: #DDD4D8;
}

.tint-5 {
  background: #E0DDD5;
}

.tint-6 {
  background: #D5DDD8;
}

.tint-7 {
  background: #DDD8D5;
}

.tint-8 {
  background: #D8D5DD;
}

/* ── ABOUT ── */
.about-section {
  border-top: 1px solid var(--border);
  padding: 80px 0 100px;
}

.about-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.about-headline {
  font-family: var(--mono);
  font-size: 2.2rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 24px;
}

.about-body {
  font-family: var(--serif);
  font-size: 1.2rem;
  color: var(--muted);
  line-height: 1.85;
  margin-bottom: 20px;
}

.about-body span {
  color: var(--text);
  font-weight: 600;
  background: linear-gradient(180deg, transparent 60%, hsla(11, 62%, 48%, 0.656) 30%);
}

.about-body a {
  color: var(--muted);
  text-decoration: none;
  transition: color .2s;
}

.about-body a:hover {
  color: var(--accent);
}

.hobby-list {
  padding-left: 5px;
  margin: 20px auto;
  color: rgba(8, 7, 6, 0.304);
  font-family: var(--serif);
  font-size: 0.7rem;
  list-style: none;
  font-style: italic;
}

.skill-group {
  margin-bottom: 28px;
}

.skill-group-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.skill-tag {
  font-family: var(--mono);
  font-size: 11px;
  padding: 4px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  display: inline-block;
  margin: 0 6px 6px 0;
  transition: background .15s, color .15s;
}

.skill-tag:hover {
  background: var(--text);
  color: var(--bg);
}

/* ── FOOTER ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-copy {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}

.footer-copy span {
  color: var(--accent);
}

.footer-link {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  margin-left: 24px;
  transition: color .2s;
}

.footer-link:hover {
  color: var(--text);
}

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-eyebrow {
  animation: fadeUp .6s .10s both ease-out;
}

.hero-title {
  animation: fadeUp .6s .20s both ease-out;
}

.hero-body {
  animation: fadeUp .6s .32s both ease-out;
}

.hero-actions {
  animation: fadeUp .6s .42s both ease-out;
}

.hero-photo-col-wrap {
  animation: fadeUp .6s .28s both ease-out;
}