[data-theme="light"] {
  --bg-primary: #f5f0ea;
  --bg-secondary: #fffcf8;
  --text-primary: #2c2a27;
  --text-secondary: #6b6560;
  --text-tertiary: #9a9490;
  --accent: #b8654a;
  --accent-hover: #a05538;
  --accent-soft: rgba(184, 101, 74, 0.08);
  --line: #d9d2c9;
  --card-border: rgba(0,0,0,0.04);
  --card-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.03);
  --nav-bg: rgba(245, 240, 234, 0.88);
  --nav-border: rgba(214, 207, 198, 0.4);
  --photo-shadow: #c9a68e;
  --photo-border: rgba(184, 101, 74, 0.25);
}
[data-theme="dark"] {
  --bg-primary: #141413;
  --bg-secondary: #1c1b19;
  --text-primary: #e8e4de;
  --text-secondary: #9e9890;
  --text-tertiary: #6e6960;
  --accent: #d4856a;
  --accent-hover: #e09a82;
  --accent-soft: rgba(212, 133, 106, 0.1);
  --line: #333230;
  --card-border: rgba(255,255,255,0.05);
  --card-shadow: 0 1px 3px rgba(0,0,0,0.2), 0 8px 24px rgba(0,0,0,0.15);
  --nav-bg: rgba(20, 20, 19, 0.9);
  --nav-border: rgba(50, 48, 44, 0.6);
  --photo-shadow: #3a2e26;
  --photo-border: rgba(212, 133, 106, 0.3);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', 'Outfit', sans-serif;
  background: var(--bg-primary); color: var(--text-primary);
  line-height: 1.7; font-weight: 300; overflow-x: hidden;
  transition: background 0.5s ease, color 0.4s ease;
}

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 1.4rem 4rem;
  display: flex; justify-content: space-between; align-items: center;
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  background: var(--nav-bg); border-bottom: 1px solid var(--nav-border);
  transition: all 0.4s ease;
}
nav.scrolled { padding: 0.8rem 4rem; }
.logo {
  font-family: 'Cormorant Garamond', 'Noto Serif SC', serif;
  font-size: 1.35rem; font-weight: 500; letter-spacing: 0.04em;
  color: var(--text-primary); transition: color 0.4s;
}
.nav-right { display: flex; align-items: center; gap: 2.2rem; flex-wrap: wrap; justify-content: flex-end; }
.nav-links { display: flex; gap: 2.2rem; }
.nav-links a {
  text-decoration: none; color: var(--text-secondary);
  font-size: 0.78rem; font-weight: 400; letter-spacing: 0.14em;
  text-transform: uppercase; font-family: 'Outfit', sans-serif;
  transition: color 0.3s; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 1px; background: var(--accent); transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { width: 100%; }

/* Theme toggle (icons only) */
.toggle-wrap { display: flex; align-items: center; }
.theme-icon-btn {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}
.theme-icon-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}
.theme-svg {
  width: 20px;
  height: 20px;
  display: block;
}
[data-theme="light"] .theme-svg-sun { display: none; }
[data-theme="dark"] .theme-svg-moon { display: none; }

/* Language */
html[data-lang="en"] .lang-zh { display: none !important; }
html[data-lang="zh"] .lang-en { display: none !important; }
.nav-controls {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}
.lang-switch {
  display: flex;
  border-radius: 8px;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--bg-secondary);
}
.lang-btn {
  font-family: 'Outfit', 'Noto Sans SC', sans-serif;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.4rem 0.65rem;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: color 0.25s ease, background 0.25s ease;
}
.lang-btn:hover { color: var(--accent); }
.lang-btn.active {
  background: var(--accent-soft);
  color: var(--accent);
}

/* HERO */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 8rem 4rem 4rem; position: relative;
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem;
  align-items: center; width: 100%; max-width: 1140px; margin: 0 auto;
}
.hero-text h1 {
  font-family: 'Cormorant Garamond', 'Noto Serif SC', serif;
  font-size: 4rem; font-weight: 300; line-height: 1.15;
  margin-bottom: 0.5rem; transition: color 0.4s;
}
.hero-text h1 .accent { color: var(--accent); font-style: italic; transition: color 0.4s; }
.hero-text .subtitle {
  font-size: 1.05rem; color: var(--text-secondary);
  margin-bottom: 2rem; font-weight: 300; transition: color 0.4s;
}
.hero-text .tagline {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.45rem; font-weight: 400; font-style: italic;
  color: var(--accent); margin-bottom: 2.2rem; line-height: 1.5; transition: color 0.4s;
}
.hero-text .bio {
  font-size: 0.92rem; color: var(--text-secondary);
  max-width: 430px; line-height: 1.9; transition: color 0.4s;
}
.hero-image { position: relative; display: flex; justify-content: center; }
.hero-image img {
  width: 370px; height: 462px; object-fit: cover; border-radius: 6px;
  filter: contrast(1.02) brightness(1.02);
  box-shadow: 20px 20px 0 var(--photo-shadow); transition: all 0.5s ease;
}
.hero-image::before {
  content: ''; position: absolute; top: -16px; left: calc(50% - 203px);
  width: 406px; height: 494px; border: 1px solid var(--photo-border);
  border-radius: 6px; z-index: -1; transition: all 0.5s ease;
}

/* SECTIONS */
section { padding: 6rem 4rem; transition: background 0.5s ease; }
.section-inner { max-width: 1140px; margin: 0 auto; }
.section-label {
  font-family: 'Outfit', sans-serif; font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.22em;
  color: var(--accent); margin-bottom: 0.5rem; font-weight: 500; transition: color 0.4s;
}
.section-title {
  font-family: 'Cormorant Garamond', 'Noto Serif SC', serif;
  font-size: 2.3rem; font-weight: 400; margin-bottom: 0.4rem; transition: color 0.4s;
}
.divider {
  width: 52px; height: 2px; background: var(--accent);
  margin-bottom: 3rem; border-radius: 1px; transition: background 0.4s;
}
.alt-bg { background: var(--bg-secondary); }

/* ABOUT */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.edu-item {
  margin-bottom: 2.2rem; padding-left: 1.4rem;
  border-left: 2px solid var(--line); transition: border-color 0.3s;
}
.edu-item:hover { border-left-color: var(--accent); }
.edu-item .school {
  font-family: 'Cormorant Garamond', 'Noto Serif SC', serif;
  font-size: 1.2rem; font-weight: 500; margin-bottom: 0.15rem; transition: color 0.4s;
}
.edu-item .degree { font-size: 0.88rem; color: var(--accent); margin-bottom: 0.15rem; transition: color 0.4s; }
.edu-item .time { font-size: 0.76rem; color: var(--text-tertiary); letter-spacing: 0.06em; transition: color 0.4s; }
.edu-item .gpa { font-size: 0.84rem; margin-top: 0.35rem; color: var(--text-secondary); transition: color 0.4s; }
.about-right h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.25rem; font-weight: 500; margin-bottom: 1.2rem; transition: color 0.4s;
}
.skill-category { margin-bottom: 1.8rem; }
.skill-category .label {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--text-tertiary); margin-bottom: 0.55rem; font-family: 'Outfit', sans-serif; transition: color 0.4s;
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.skill-tags span {
  padding: 0.3rem 0.8rem; border-radius: 100px; border: 1px solid var(--line);
  font-size: 0.78rem; color: var(--text-secondary); transition: all 0.3s;
}
.skill-tags span:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

/* EXPERIENCE */
.exp-item {
  display: grid; grid-template-columns: 190px 1fr; gap: 2.5rem;
  margin-bottom: 3rem; padding-bottom: 3rem; border-bottom: 1px solid var(--line); transition: border-color 0.4s;
}
.exp-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.exp-meta .company {
  font-family: 'Cormorant Garamond', 'Noto Serif SC', serif;
  font-size: 1.15rem; font-weight: 500; margin-bottom: 0.15rem; transition: color 0.4s;
}
.exp-meta .role { font-size: 0.82rem; color: var(--accent); margin-bottom: 0.25rem; transition: color 0.4s; }
.exp-meta .time { font-size: 0.76rem; color: var(--text-tertiary); transition: color 0.4s; }

/* Experience expandable points */
.exp-detail {
  margin-bottom: 1.15rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-primary);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.exp-detail[open],
.exp-detail-static {
  border-color: rgba(184, 101, 74, 0.35);
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}
[data-theme="dark"] .exp-detail[open],
[data-theme="dark"] .exp-detail-static {
  border-color: rgba(212, 133, 106, 0.35);
  box-shadow: 0 2px 12px rgba(0,0,0,0.2);
}
.exp-summary {
  list-style: none;
  cursor: pointer;
  padding: 0.85rem 1rem 0.85rem 0.75rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  font-family: 'Noto Sans SC', sans-serif;
  transition: background 0.25s ease;
}
.exp-summary::-webkit-details-marker { display: none; }
.exp-summary::marker { content: ''; }
.exp-summary:hover { background: var(--accent-soft); }
.exp-summary:focus { outline: none; }
.exp-summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}
.exp-summary-static {
  cursor: default;
}
.exp-summary-static:hover { background: transparent; }
/* 非折叠经历条目标题：与 .exp-summary-text 一致但不生成右侧 chevron（避免仅靠覆盖 ::after） */
.exp-summary-heading-static {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-primary);
  width: 100%;
}
.exp-summary-heading-static::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  transform: scale(1.25);
}
.exp-summary-text {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-primary);
  width: 100%;
}
.exp-summary-text::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  transition: transform 0.25s ease;
}
.exp-detail[open] .exp-summary-text::before { transform: scale(1.25); }
.exp-summary-text::after {
  content: '';
  margin-left: auto;
  width: 0.45rem;
  height: 0.45rem;
  border-right: 1.5px solid var(--text-tertiary);
  border-bottom: 1.5px solid var(--text-tertiary);
  transform: rotate(-45deg);
  transition: transform 0.3s ease, border-color 0.3s ease;
  flex-shrink: 0;
}
.exp-detail[open] .exp-summary-text::after {
  transform: rotate(135deg);
  border-color: var(--accent);
}
.exp-summary-hint {
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
  padding-left: calc(5px + 0.55rem);
  max-width: 100%;
  line-height: 1.45;
}
.exp-summary-body {
  font-size: 0.86rem;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.85;
  margin: 0.55rem 0 0;
  padding-left: calc(5px + 0.55rem);
  text-align: left;
  transition: color 0.4s;
}
.exp-panel {
  padding: 0 1rem 1rem;
  padding-left: calc(0.75rem + 5px + 0.55rem);
  border-top: 1px solid var(--line);
  margin: 0 0.5rem;
  padding-top: 0.85rem;
}
.exp-panel-more {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.82;
  opacity: 0.95;
}
.exp-panel-more p { margin: 0; }

/* Help center case embed (inside exp dropdown) */
.exp-panel-helpcenter { display: flex; flex-direction: column; gap: 1rem; }
.exp-hc-lead {
  font-size: 0.82rem;
  line-height: 1.82;
  color: var(--text-secondary);
}
.exp-hc-lead strong { color: var(--text-primary); font-weight: 500; }
.exp-hc-kicker {
  font-family: 'Cormorant Garamond', 'Noto Serif SC', serif;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-top: 0.25rem;
}
.exp-hc-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.exp-hc-card {
  background: var(--bg-primary);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.85rem 0.95rem;
}
.exp-hc-label {
  font-family: 'Outfit', sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 0.65rem;
}
.exp-hc-label.before { color: var(--text-tertiary); }
.exp-hc-label.after { color: var(--accent); }
.exp-hc-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.exp-hc-list li {
  font-size: 0.76rem;
  line-height: 1.5;
  color: var(--text-secondary);
  padding-left: 0.75rem;
  position: relative;
  margin-bottom: 0.35rem;
}
.exp-hc-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 1px;
  background: currentColor;
}
.exp-hc-list li.strike {
  text-decoration: line-through;
  color: var(--text-tertiary);
  opacity: 0.85;
}
.exp-hc-list li.good { color: var(--text-primary); }
.exp-hc-foot {
  font-size: 0.68rem;
  margin: 0.6rem 0 0;
  line-height: 1.4;
}
.exp-hc-foot.bad { color: #b85a5a; }
.exp-hc-foot.good { color: #5a8f6e; }
.exp-hc-callout {
  font-size: 0.78rem;
  line-height: 1.78;
  color: var(--text-secondary);
  padding: 0.85rem 0.95rem;
  background: var(--accent-soft);
  border-left: 2px solid var(--accent);
  border-radius: 0 8px 8px 0;
  margin: 0;
}
.exp-hc-callout strong { color: var(--accent); font-weight: 500; }
.exp-hc-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.exp-hc-metric {
  background: var(--bg-primary);
  border: 1px solid var(--line);
  border-top: 2px solid var(--accent);
  border-radius: 0 0 6px 6px;
  padding: 0.75rem 0.5rem;
  text-align: center;
}
.exp-hc-metric-num {
  font-family: 'Cormorant Garamond', 'Noto Serif SC', serif;
  font-size: 1.65rem;
  font-style: italic;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.35rem;
}
.exp-hc-metric-label {
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  line-height: 1.35;
}
.exp-hc-metric-hint {
  font-size: 0.58rem;
  color: var(--text-tertiary);
  font-style: italic;
  margin-top: 0.2rem;
}
.exp-hc-note {
  font-size: 0.72rem !important;
  line-height: 1.65 !important;
  color: var(--text-tertiary) !important;
  margin: 0 !important;
}
@media (max-width: 640px) {
  .exp-hc-compare,
  .exp-hc-metrics { grid-template-columns: 1fr; }
}

.metric {
  display: inline-block; padding: 0.1rem 0.45rem; background: var(--accent-soft);
  border-radius: 3px; color: var(--accent); font-weight: 500; font-size: 0.8rem; transition: all 0.4s;
}

/* PROJECTS */
.project-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.project-card {
  background: var(--bg-primary); border: 1px solid var(--card-border);
  border-radius: 10px; padding: 2.2rem; box-shadow: var(--card-shadow);
  transition: all 0.4s ease; position: relative; overflow: hidden;
}
a.project-card.project-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
a.project-card.project-card-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.project-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  opacity: 0; transition: opacity 0.4s;
}
.project-card:hover { transform: translateY(-3px); box-shadow: 0 4px 12px rgba(0,0,0,0.06), 0 16px 40px rgba(0,0,0,0.05); }
[data-theme="dark"] .project-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.2), 0 16px 40px rgba(0,0,0,0.2); }
.project-card:hover::before { opacity: 1; }
.project-card .tag {
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--accent); margin-bottom: 0.7rem; font-family: 'Outfit', sans-serif; font-weight: 500; transition: color 0.4s;
}
.project-card h3 {
  font-family: 'Cormorant Garamond', 'Noto Serif SC', serif;
  font-size: 1.35rem; font-weight: 500; margin-bottom: 0.9rem; line-height: 1.4; transition: color 0.4s;
}
.project-card p { font-size: 0.84rem; color: var(--text-secondary); line-height: 1.85; transition: color 0.4s; }
.tech-stack { margin-top: 1.1rem; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tech-stack span {
  padding: 0.18rem 0.55rem; border-radius: 100px; border: 1px solid var(--line);
  font-size: 0.7rem; color: var(--text-tertiary); transition: all 0.4s;
}
/* CONTACT */
.contact { text-align: center; }
.contact .section-inner { max-width: 580px; }
.contact .divider { margin-left: auto; margin-right: auto; }
.contact-line { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 2.2rem; line-height: 1.85; transition: color 0.4s; }
.contact-links { display: flex; justify-content: center; gap: 2.2rem; flex-wrap: wrap; }
.contact-links a {
  text-decoration: none; font-size: 0.84rem; color: var(--text-primary); font-weight: 400;
  padding-bottom: 0.15rem; border-bottom: 1px solid var(--line); transition: all 0.3s;
}
.contact-links a:hover { color: var(--accent); border-color: var(--accent); }

/* FOOTER */
footer {
  padding: 2rem 4rem; text-align: center; font-size: 0.72rem;
  color: var(--text-tertiary); background: var(--bg-primary);
  border-top: 1px solid var(--line); letter-spacing: 0.08em; transition: all 0.4s;
}

/* ANIMATIONS */
.fade-in { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in.d1 { transition-delay: 0.1s; }

/* Order flow diagram — aligned with portfolio theme (accent + light/dark) */
[data-theme="light"] .order-flow-embed {
  --of-phone-bg: #ebe6df;
  --of-phone-border: color-mix(in srgb, var(--line) 90%, var(--text-primary));
  --of-chrome: #e0dbd3;
  --of-chrome-deep: #d4cec4;
  --of-row: #d8d2c8;
  --of-row-soft: #cdc7bd;
  --of-ink: color-mix(in srgb, var(--text-primary) 22%, transparent);
  --of-ink-mid: color-mix(in srgb, var(--text-primary) 32%, transparent);
  --of-scan-bg: color-mix(in srgb, var(--bg-primary) 70%, var(--text-primary));
  --of-barcode: color-mix(in srgb, var(--text-primary) 45%, var(--bg-secondary));
}
[data-theme="dark"] .order-flow-embed {
  --of-phone-bg: #1c1b19;
  --of-phone-border: var(--line);
  --of-chrome: #252420;
  --of-chrome-deep: #2e2c28;
  --of-row: #33312c;
  --of-row-soft: #3a3833;
  --of-ink: color-mix(in srgb, var(--text-secondary) 55%, transparent);
  --of-ink-mid: color-mix(in srgb, var(--text-secondary) 75%, transparent);
  --of-scan-bg: #141413;
  --of-barcode: color-mix(in srgb, var(--text-primary) 35%, var(--bg-secondary));
}

.order-flow-embed {
  margin-top: 1.25rem;
  border-radius: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  padding: 16px 14px 18px;
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

.order-flow-embed .flow-wrap { font-family: 'Outfit', 'Noto Sans SC', sans-serif; padding: 8px 0 16px; }
.order-flow-embed .of-step-col { display: flex; flex-direction: column; align-items: center; }
.order-flow-embed .flow-label {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 14px;
  font-family: 'Outfit', sans-serif;
}
.order-flow-embed .flow-label.before { color: var(--text-tertiary); }
.order-flow-embed .flow-label.after { color: var(--accent); }

.order-flow-embed .steps-row {
  display: flex;
  align-items: flex-start;
  gap: 0;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding-bottom: 4px;
}
.order-flow-embed .step { display: flex; align-items: center; gap: 0; }

.order-flow-embed .phone {
  width: 100px;
  background: var(--of-phone-bg);
  border: 1.5px solid var(--of-phone-border);
  border-radius: 14px;
  padding: 8px 6px 10px;
  position: relative;
  flex-shrink: 0;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.order-flow-embed .phone.of-highlight {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--of-phone-border));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 12%, transparent);
}
.order-flow-embed .phone-notch {
  width: 28px;
  height: 4px;
  background: var(--of-chrome-deep);
  border-radius: 2px;
  margin: 0 auto 6px;
}
.order-flow-embed .phone-bar {
  height: 20px;
  background: var(--of-chrome);
  border-radius: 4px;
  margin-bottom: 5px;
  display: flex;
  align-items: center;
  padding: 0 6px;
  gap: 4px;
}
.order-flow-embed .phone-bar.of-search-bar {
  background: var(--of-scan-bg);
  border: 1px solid var(--of-phone-border);
}
.order-flow-embed .phone-bar.of-scan-header { justify-content: space-between; }
.order-flow-embed .phone-bar.of-scan-header .phone-bar-text.short { width: 40%; flex: 0 0 40%; }
.order-flow-embed .of-scan-label {
  font-size: 9px;
  color: var(--accent);
  letter-spacing: 0.05em;
  font-weight: 500;
}
.order-flow-embed .phone-bar-icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--of-ink-mid);
  flex-shrink: 0;
}
.order-flow-embed .phone-bar-text {
  height: 5px;
  flex: 1;
  background: var(--of-ink-mid);
  border-radius: 2px;
}
.order-flow-embed .phone-bar.of-search-bar .search-icon { font-size: 8px; color: var(--text-tertiary); opacity: 0.85; }
.order-flow-embed .phone-bar.of-search-bar .phone-bar-text { background: var(--of-ink-mid); }

.order-flow-embed .phone-list-item {
  background: var(--of-chrome-deep);
  border-radius: 4px;
  padding: 5px 6px;
  margin-bottom: 3px;
}
.order-flow-embed .phone-list-item.dim { opacity: 0.35; }
.order-flow-embed .phone-list-name {
  height: 5px;
  width: 55%;
  background: var(--of-ink-mid);
  border-radius: 2px;
  margin-bottom: 3px;
}
.order-flow-embed .phone-list-meta {
  height: 4px;
  width: 75%;
  background: var(--of-row);
  border-radius: 2px;
}
.order-flow-embed .phone-list-item.highlight {
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}
.order-flow-embed .phone-list-name.highlight {
  background: color-mix(in srgb, var(--accent) 45%, var(--of-chrome-deep));
}

.order-flow-embed .flow-result-count {
  font-size: 7px;
  color: var(--text-tertiary);
  margin-bottom: 3px;
  padding-left: 2px;
}

.order-flow-embed .phone-detail-header {
  background: var(--of-chrome);
  border-radius: 4px;
  padding: 6px;
  margin-bottom: 4px;
}
.order-flow-embed .phone-detail-header.of-accent-head {
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}
.order-flow-embed .phone-detail-title {
  height: 5px;
  width: 60%;
  background: color-mix(in srgb, var(--accent) 55%, var(--of-chrome));
  border-radius: 2px;
  margin-bottom: 3px;
}
.order-flow-embed .phone-detail-sub {
  height: 4px;
  width: 40%;
  background: var(--of-ink-mid);
  border-radius: 2px;
}
.order-flow-embed .phone-detail-row { display: flex; gap: 3px; margin-bottom: 3px; }
.order-flow-embed .phone-detail-label {
  height: 4px;
  width: 30%;
  background: var(--of-row);
  border-radius: 2px;
}
.order-flow-embed .phone-detail-val {
  height: 4px;
  width: 55%;
  background: var(--of-ink-mid);
  border-radius: 2px;
}
.order-flow-embed .phone-detail-val.narrow { width: 35%; }

.order-flow-embed .phone-btn {
  height: 14px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  border-radius: 3px;
  margin-top: 6px;
}
.order-flow-embed .phone-btn.of-accent-btn {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  border-color: color-mix(in srgb, var(--accent) 48%, transparent);
}

.order-flow-embed .search-active {
  background: var(--of-chrome);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
  border-radius: 4px;
  padding: 4px 6px;
  margin-bottom: 5px;
  display: flex;
  align-items: center;
  gap: 3px;
}
.order-flow-embed .search-icon { font-size: 8px; opacity: 0.65; color: var(--text-tertiary); }
.order-flow-embed .search-cursor {
  width: 1px;
  height: 10px;
  background: var(--accent);
  animation: orderFlowBlink 1s infinite;
}
.order-flow-embed .search-text { font-size: 7px; color: var(--text-tertiary); flex: 1; }
.order-flow-embed .type-text { font-size: 7px; color: color-mix(in srgb, var(--accent) 70%, var(--text-secondary)); }

@keyframes orderFlowBlink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.order-flow-embed .scan-frame {
  background: var(--of-scan-bg);
  border-radius: 4px;
  padding: 4px;
  margin-bottom: 4px;
  position: relative;
  aspect-ratio: 1.4;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--of-phone-border);
}
.order-flow-embed .scan-box {
  width: 60px;
  height: 30px;
  border: 1.5px solid var(--accent);
  border-radius: 2px;
  position: relative;
}
.order-flow-embed .scan-line {
  position: absolute;
  width: 100%;
  height: 1.5px;
  background: color-mix(in srgb, var(--accent) 65%, transparent);
  top: 40%;
  animation: orderFlowScan 1.4s ease-in-out infinite;
}
@keyframes orderFlowScan { 0%, 100% { top: 20%; } 50% { top: 70%; } }

.order-flow-embed .scan-corner { position: absolute; width: 8px; height: 8px; }
.order-flow-embed .scan-corner.tl { top: -1px; left: -1px; border-top: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.order-flow-embed .scan-corner.tr { top: -1px; right: -1px; border-top: 2px solid var(--accent); border-right: 2px solid var(--accent); }
.order-flow-embed .scan-corner.bl { bottom: -1px; left: -1px; border-bottom: 2px solid var(--accent); border-left: 2px solid var(--accent); }
.order-flow-embed .scan-corner.br { bottom: -1px; right: -1px; border-bottom: 2px solid var(--accent); border-right: 2px solid var(--accent); }

.order-flow-embed .barcode-lines { display: flex; gap: 1.5px; align-items: stretch; height: 14px; }
.order-flow-embed .barcode-lines.abs { position: absolute; bottom: 6px; left: 8px; right: 8px; }
.order-flow-embed .barcode-lines span { display: block; background: var(--of-barcode); border-radius: 0.5px; }

.order-flow-embed .scan-hint {
  font-size: 7px;
  color: color-mix(in srgb, var(--accent) 70%, var(--text-tertiary));
  text-align: center;
  margin-top: 3px;
}

.order-flow-embed .arrow-step {
  display: flex;
  align-items: center;
  padding: 0 4px;
  color: var(--text-tertiary);
  font-size: 14px;
  flex-shrink: 0;
  margin-top: -20px;
}
.order-flow-embed .arrow-step.prominent { color: var(--accent); }

.order-flow-embed .step-num {
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--accent);
  text-align: center;
  margin-top: 5px;
  text-transform: uppercase;
  max-width: 104px;
  line-height: 1.35;
}

.order-flow-embed .section-row { display: flex; gap: 32px; flex-direction: column; }

.order-flow-embed .time-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 11px;
}
.order-flow-embed .time-val { font-size: 18px; font-weight: 500; }
.order-flow-embed .time-val.old {
  color: var(--text-tertiary);
  text-decoration: line-through;
}
.order-flow-embed .time-val.new { color: var(--accent); }
.order-flow-embed .time-arrow { color: var(--text-tertiary); font-size: 14px; }
.order-flow-embed .time-caption { font-size: 11px; color: var(--text-secondary); }
.order-flow-embed .time-caption.muted { color: var(--text-tertiary); }

.order-flow-embed .of-v-spacer { height: 28px; }

.order-flow-embed .result-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  background: var(--accent-soft);
  border-left: 2px solid var(--accent);
  margin-top: 14px;
  border-radius: 0 8px 8px 0;
}
.order-flow-embed .result-num {
  font-size: 28px;
  font-weight: 500;
  color: var(--accent);
  font-style: italic;
  line-height: 1;
  font-family: 'Cormorant Garamond', 'Noto Serif SC', serif;
}
.order-flow-embed .result-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Standalone preview page (order_flow_comparison.html) */
.order-flow-standalone {
  margin: 0;
  padding: 2rem 1.5rem 3rem;
  background: var(--bg-primary);
  min-height: 100vh;
  transition: background 0.4s ease;
}
.order-flow-standalone-note {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  max-width: 52rem;
  margin: 0 auto 1.25rem;
  line-height: 1.6;
}
.order-flow-standalone-note code {
  font-size: 0.85em;
  color: var(--text-secondary);
}
.order-flow-standalone .order-flow-embed {
  max-width: 52rem;
  margin-left: auto;
  margin-right: auto;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  nav { padding: 1rem 1.8rem; }
  nav.scrolled { padding: 0.7rem 1.8rem; }
  .nav-links { gap: 1.3rem; }
  .nav-links a { font-size: 0.7rem; }
  .hero { padding: 6rem 1.8rem 3rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; text-align: center; }
  .hero-text h1 { font-size: 2.6rem; }
  .hero-text .bio { margin: 0 auto; }
  .hero-image { order: -1; }
  .hero-image img { width: 260px; height: 325px; box-shadow: 14px 14px 0 var(--photo-shadow); }
  .hero-image::before { width: 288px; height: 357px; left: calc(50% - 144px); top: -12px; }
  section { padding: 4rem 1.8rem; }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .exp-item { grid-template-columns: 1fr; gap: 0.8rem; }
  .project-cards { grid-template-columns: 1fr; }
}
@media (max-width: 520px) { .nav-links { display: none; } }