:root {
  --page-max-width: 960px;
  --landing-max-width: 1040px;
  --body-padding: clamp(16px, 2vw, 28px);
  --font-body: 'Times New Roman', serif;
  --font-body-zh: "FangSong_GB2312", "FangSong", "PingFang SC", "Microsoft YaHei", "Heiti SC", "SimSun", "Arial", serif;
  --font-terminal: "Monaco", "Cascadia Mono", "Consolas", "Lucida Console", "Courier New", monospace;
  --font-size-base: 16px;
  --font-size-small: 13px;
  --line-height-base: 1.4;
  --line-height-paragraph: 1.45;
  --line-height-list: 1.32;
  --line-height-small: 1.25;
  --section-gap: clamp(1.1rem, 1vw + 0.8rem, 1.6rem);
  --block-gap: 0.45rem;
  --list-gap: 0.25rem;
  --accent-color: #0070c9;
  --text-color: #333;
  --surface-bg: #f8f8f8;
  --page-bg: #fff;
  --terminal-bg: #020403;
  --terminal-panel: #07100d;
  --terminal-border: rgba(140, 255, 190, 0.18);
  --terminal-glow: rgba(108, 255, 164, 0.18);
  --terminal-text: #c9ffd9;
  --terminal-muted: #78b88d;
  --terminal-accent: #5cff9b;
  --terminal-danger: #ff7c7c;
}

body {
  font-family: var(--font-body);
  margin: 0 auto;
  padding: var(--body-padding);
  line-height: var(--line-height-base);
  background-color: var(--surface-bg);
  font-size: var(--font-size-base);
  color: var(--text-color);
  box-sizing: border-box;
}

.page {
  max-width: var(--page-max-width);
  margin: 0 auto;
  background: var(--page-bg);
  border-radius: 8px;
  padding: clamp(18px, 2vw, 28px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.loader {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.92);
  transition: opacity 0.2s ease;
  z-index: 1000;
}
.loader.hidden {
  opacity: 0;
  pointer-events: none;
}
.loader-terminal {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.95rem 1.15rem;
  border-radius: 14px;
  font-family: var(--font-terminal);
  font-size: 15px;
  color: #173d2d;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(18, 76, 52, 0.12);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}
.loader-logo {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 11px;
  background: linear-gradient(180deg, #0f2218, #0b1510);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 6px 16px rgba(0, 0, 0, 0.18);
}
.loader-logo-arrow {
  color: #78f0ae;
  font-size: 0.95rem;
  line-height: 1;
  transform: translateX(-0.14rem);
}
.loader-logo-line {
  width: 0.55rem;
  height: 0.12rem;
  margin-left: 0.08rem;
  background: #78f0ae;
  border-radius: 999px;
  animation: loader-line-blink 1s steps(1, end) infinite;
}
.loader-text {
  font-size: inherit;
  letter-spacing: 0.02em;
  text-transform: none;
  font-weight: 600;
  color: inherit;
}
@keyframes loader-line-blink {
  0%, 49% {
    opacity: 1;
  }
  50%, 100% {
    opacity: 0;
  }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
.header {
  text-align: center;
  padding-bottom: 10px;
  margin-bottom: var(--section-gap);
  border-bottom: 2px solid #333;
}
.name { font-size: 28px; font-weight: bold; margin-bottom: 8px; }
.contact-info {
  text-align: left;
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 0;
  font-size: 0.82rem;
  white-space: nowrap;
  overflow-x: auto;
}
#contact-info a {
  color: var(--accent-color);
  text-decoration: none;
}
#contact-info a:hover {
  text-decoration: underline;
  text-decoration-skip-ink: none;
}
.contact-item {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  white-space: nowrap;
}
.contact-item strong {
  margin-right: 0.25rem;
}
.contact-divider {
  display: inline-flex;
  align-items: center;
  margin: 0 0.6rem;
  color: rgba(0, 0, 0, 0.45);
  flex-shrink: 0;
}

.content { padding: 0; }
.terminal-home {
  min-height: 100vh;
  font-family: var(--font-terminal);
  background:
    radial-gradient(circle at top left, rgba(39, 104, 58, 0.14), transparent 28%),
    radial-gradient(circle at bottom right, rgba(16, 72, 39, 0.28), transparent 24%),
    linear-gradient(180deg, #010201 0%, #030605 100%);
  color: var(--terminal-text);
}
.terminal-home,
.terminal-home p,
.terminal-home div,
.terminal-home span,
.terminal-home a,
.terminal-home label,
.terminal-home h1,
.terminal-home button,
.terminal-home input,
.terminal-home select,
.terminal-home textarea {
  font-family: var(--font-terminal);
}
.terminal-home .loader {
  background: rgba(2, 4, 3, 0.92);
}
.terminal-home .loader-terminal {
  color: #e7fff0;
  background: rgba(4, 10, 7, 0.94);
  border-color: rgba(92, 255, 155, 0.16);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.02) inset,
    0 0 28px rgba(92, 255, 155, 0.12);
}
.terminal-home .loader-text {
  color: var(--terminal-text);
}
.terminal-home .loader-logo {
  background: linear-gradient(180deg, #0b1711, #060b08);
}
.terminal-home .loader-logo-arrow,
.terminal-home .loader-logo-line {
  color: var(--terminal-accent);
  background: var(--terminal-accent);
}
.terminal-shell {
  width: min(1400px, calc(100vw - (var(--body-padding) * 2)));
  margin: 0 auto;
}
.terminal-window {
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - (var(--body-padding) * 2));
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(7, 16, 13, 0.98), rgba(3, 9, 6, 0.98));
  border: 1px solid var(--terminal-border);
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.48),
    0 0 0 1px rgba(255, 255, 255, 0.02) inset,
    0 0 48px var(--terminal-glow);
}
.terminal-window::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.02) 50%, rgba(0, 0, 0, 0.02) 50%);
  background-size: 100% 4px;
  opacity: 0.16;
  pointer-events: none;
}
.terminal-chrome {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 16px;
  border-bottom: 1px solid rgba(140, 255, 190, 0.1);
  background: rgba(255, 255, 255, 0.02);
}
.terminal-dots {
  display: flex;
  gap: 8px;
}
.terminal-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}
.terminal-dots span:nth-child(1) { background: #ff5f57; }
.terminal-dots span:nth-child(2) { background: #febc2e; }
.terminal-dots span:nth-child(3) { background: #28c840; }
.terminal-body {
  position: relative;
  z-index: 1;
  padding: clamp(14px, 2.8vw, 24px) clamp(20px, 4vw, 36px);
  min-height: calc(100vh - (var(--body-padding) * 2) - 45px);
}
.terminal-output {
  overflow: auto;
  padding-right: 6px;
  user-select: text;
  -webkit-user-select: text;
}
.terminal-output * {
  user-select: text;
  -webkit-user-select: text;
}
.terminal-entry + .terminal-entry {
  margin-top: 0;
}
.terminal-command {
  color: var(--terminal-accent);
  font-size: 14px;
  line-height: 1.6;
}
.terminal-command-prompt {
  color: var(--terminal-muted);
}
.terminal-command-text {
  margin-left: 0.35ch;
}
.terminal-response {
  margin-top: 0.35rem;
  color: var(--terminal-text);
  font-size: 14px;
  line-height: 1.6;
}
.terminal-response a {
  color: var(--terminal-accent);
  text-decoration: none;
}
.terminal-response a:hover {
  text-decoration: underline;
}
.terminal-block-title {
  margin-bottom: 0.3rem;
  color: #f0fff5;
}
.terminal-command-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
  font-size: 14px;
  line-height: 1.6;
}
.terminal-command-token {
  color: var(--terminal-text);
}
.terminal-list-item {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 14px;
  line-height: 1.6;
}
.terminal-key {
  min-width: 76px;
  color: var(--terminal-accent);
}
.terminal-sep {
  color: rgba(201, 255, 217, 0.55);
}
.terminal-status {
  color: var(--terminal-muted);
}
.terminal-status-error {
  color: var(--terminal-danger);
}
.terminal-input-row {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 0;
  border: none;
  background: transparent;
  font-size: 14px;
  line-height: 1.6;
}
.terminal-prompt {
  color: var(--terminal-accent);
  font-size: 14px;
  white-space: nowrap;
}
.terminal-input {
  flex: 1;
  width: 100%;
  border: none;
  outline: none;
  background: transparent;
  color: #effff3;
  font: inherit;
  line-height: inherit;
  caret-color: var(--terminal-accent);
  padding: 0;
  margin-left: 0.35ch;
  -webkit-text-size-adjust: 100%;
}
.terminal-input::placeholder {
  color: rgba(201, 255, 217, 0.28);
}
.terminal-output::-webkit-scrollbar {
  width: 8px;
}
.terminal-output::-webkit-scrollbar-thumb {
  background: rgba(92, 255, 155, 0.18);
  border-radius: 999px;
}
.profile-summary {
  font-size: 14px;
  line-height: var(--line-height-paragraph);
  color: #444;
  margin: 0 0 var(--section-gap);
  font-style: italic;
}
.edu-note {
  font-size: 13px;
  font-style: italic;
  color: #555;
  margin-top: 1px;
}
.section-title {
  font-weight: bold;
  font-size: 20px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin: var(--section-gap) 0 0.4rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
}
.section-title:first-of-type { margin-top: 0; }
.content > *:not(.section-title) + .section-title { margin-top: var(--section-gap); }
.job-title { font-weight: bold; font-style: italic; font-size: 14px; }
.job-heading {
  align-items: flex-start;
}
.job-heading-main {
  min-width: 0;
}
.institution {
  font-weight: bold;
  font-size: 16px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}
.dates {
  font-size: 13px;
  font-weight: normal;
  white-space: nowrap;
  flex-shrink: 0;
  line-height: var(--line-height-small);
  text-align: right;
}
.degree { font-style: italic; font-size: 14px; }
#experience-list > div + div {
  margin-top: calc(var(--section-gap) * 0.65);
}
p {
  margin: var(--block-gap) 0;
  font-size: 14px;
  line-height: var(--line-height-paragraph);
}
ul {
  margin: 0;
  padding-left: 1.1rem;
  display: block;
}
li {
  margin: 0;
  font-size: 14px;
  line-height: var(--line-height-list);
}
li + li { margin-top: var(--list-gap); }
.resume-btn {
  font-size: 12px;
  text-decoration: none;
  padding: 2px 10px;
  color: var(--accent-color);
  cursor: pointer;
  font-weight: normal;
  border: 1px solid rgba(0, 112, 201, 0.35);
  border-radius: 999px;
  background: rgba(0, 112, 201, 0.08);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.resume-btn:hover {
  background: rgba(0, 112, 201, 0.15);
  border-color: rgba(0, 112, 201, 0.5);
}
.resume-btn:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}
.toolbar {
  position: fixed;
  top: 1rem;
  right: 1rem;
  display: flex;
  gap: 6px;
  z-index: 100;
}

.lang-switch-btn,
.download-btn {
  border: none;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(6px);
  padding: 4px 12px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.12);
}

.lang-dropdown {
  position: relative;
}

.lang-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  margin: 0;
  padding: 4px 0;
  list-style: none;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(0, 112, 201, 0.2);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
  min-width: 90px;
  z-index: 101;
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.lang-menu.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.lang-menu li:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: -2px;
}

.lang-menu li {
  padding: 6px 16px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-color);
  white-space: nowrap;
}

.lang-menu li:hover {
  background: rgba(0, 112, 201, 0.08);
  color: var(--accent-color);
}

.lang-menu li[aria-selected="true"] {
  color: var(--accent-color);
  font-weight: bold;
}
.small-text { font-size: 12px; color: #666; }
.credential-id { margin-left: 8px;}
.credential-desc { margin-left: 2px; margin-top: 2px; }
.micro-note {
  font-size: 12px;
  font-style: italic;
  color: #555;
  margin-top: var(--block-gap);
  line-height: var(--line-height-small);
}
.referee-entry { margin-bottom: 8px; font-size: 14px; }
.referee-name { font-weight: bold; }
.referee-meta {
  font-style: italic;
  font-size: 13px;
  line-height: var(--line-height-list);
}
.referee-contact {
  font-size: 12px;
  color: #555;
  line-height: var(--line-height-small);
}
.referee-section {
  margin-top: calc(var(--section-gap) * 1.1);
  padding-top: 0.6rem;
}

/* Print layout */
@page { size: A4; margin: 10mm; }

  @media print {
  :root {
    --page-max-width: 190mm;
    --body-padding: 0;
    --font-size-base: 13px;
    --line-height-base: 1.25;
    --line-height-paragraph: 1.35;
    --line-height-list: 1.22;
    --line-height-small: 1.15;
    --section-gap: 0.9rem;
    --block-gap: 0.25rem;
    --list-gap: 0.15rem;
    --surface-bg: #fff;
    --page-bg: #fff;
  }

  html, body {
    width: auto;
    margin: 0;
    padding: 0;
    background: #fff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    box-sizing: border-box;
  }

  body {
    max-width: none;
    padding: 0;
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: #000;
  }

  .page {
    width: var(--page-max-width);
    margin: 0 auto;
    padding: 9mm 11mm 12mm;
    box-sizing: border-box;
    background: var(--page-bg);
    display: block;
    position: relative;
    box-shadow: none;
    border: none;
  }

  .header { margin-bottom: 8px; border-bottom: 2px solid #333; }
  .header .contact-info {
    display: flex !important;
    width: 100% !important;
    justify-content: center !important;
    text-align: center !important;
    overflow-x: visible !important;
    margin: 0 auto !important;
  }
  .section-title {
    font-size: 15px;
    letter-spacing: 0.05em;
    border-bottom-width: 1px;
    text-decoration: none;
  }
  .institution { font-size: 13px; }
  .dates { font-size: 10px; }
  .profile-summary { font-size: 11px; margin-bottom: 0.5rem; }
  .edu-note { font-size: 10px; }
  .job-title { font-size: 11px; }
  .degree { font-size: 11px; }
  ul { margin: 0; padding-left: 12px; }
  li, p { font-size: 11px; margin: 0; }
  .credential-id {font-size: 10px;}
  .credential-desc { font-size: 10px; }
  .micro-note { font-size: 10px;}
  .referee-section {
    margin-top: calc(var(--section-gap) * 1.1);
    padding-top: 0.4rem;
  }

  /* keep individual entries intact but allow sections to flow across pages */
  #education-list > div,
  #open-source-projects > li,
  #open-source-custom-projects > li,
  #cert-list > li,
  #referee-list > div {
    page-break-inside: avoid;
    break-inside: avoid;
  }

  /* Let long experience entries flow across pages to avoid large bottom gaps. */
  #experience-list > div {
    page-break-inside: auto;
    break-inside: auto;
  }

  #experience-list .job-heading {
    page-break-after: avoid;
    break-after: avoid;
  }

  #experience-list .job-heading + ul {
    page-break-before: avoid;
    break-before: avoid;
  }

  .toolbar { display: none !important; }
  .resume-btn {
    display: inline-block;
    page-break-inside: avoid;
    break-inside: avoid;
    page-break-before: avoid;
    page-break-after: avoid;
    break-before: avoid;
    break-after: avoid;
    font-weight: normal;
  }


}

@media (max-width: 768px) {
  :root {
    --page-max-width: 100%;
    --body-padding: 16px;
  }

  .terminal-body {
    padding: 18px;
    min-height: calc(100vh - (var(--body-padding) * 2) - 45px);
  }
  .terminal-output {
    max-height: none;
  }
  .terminal-name {
    font-size: clamp(2.2rem, 16vw, 3.6rem);
  }
  .terminal-input-row {
    align-items: center;
    flex-direction: row;
    font-size: 16px;
    line-height: 1.5;
  }
  .terminal-prompt {
    font-size: 16px;
    white-space: nowrap;
  }
  .terminal-input,
  .terminal-command,
  .terminal-command-prompt,
  .terminal-response,
  .terminal-command-list,
  .terminal-list-item {
    font-size: 16px !important;
    line-height: 1.5;
  }
  .name { font-size: 24px; }
  .institution { font-size: 15px; }
  .job-title, .degree, li, p { font-size: 13px; }
  .contact-info {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0.4rem 1rem;
    white-space: normal;
  }
  .contact-divider {
    display: none;
  }
  .toolbar {
    top: 0.5rem;
    right: 0.5rem;
    gap: 4px;
  }
  .home-link-btn {
    display: none;
  }
  .lang-switch-btn,
  .download-btn {
    padding: 3px 8px;
    font-size: 11px;
  }
}

body[lang="en"] { font-family: var(--font-body); }
body[lang="zh"] { font-family: var(--font-body-zh); }
body.terminal-home[lang="en"] { font-family: var(--font-terminal); }