:root {
  --bg: #05070d;
  --panel: linear-gradient(180deg, rgba(8, 11, 20, 0.36) 0%, rgba(8, 11, 20, 0.18) 100%);
  --panel-soft: linear-gradient(180deg, rgba(10, 14, 24, 0.32) 0%, rgba(10, 14, 24, 0.14) 100%);
  --panel-border: rgba(255, 255, 255, 0.14);
  --text: #fcfdff;
  --muted: rgba(245, 247, 255, 0.92);
  --star-blue: #63a9ff;
  --star-blue-bright: #93cbff;
  --shadow: 0 20px 48px rgba(0, 0, 0, 0.22);
  --inner-glow: inset 0 1px 0 rgba(255, 255, 255, 0.16);
  --glass-line: inset 0 0 0 1px rgba(255, 255, 255, 0.035);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: #000;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Outfit", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

body > *:not(.cosmic-scene) {
  position: relative;
  z-index: 2;
  opacity: 0;
  transform: translate3d(0, 16px, 0);
  transition: opacity 0.5s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

body.page-ready > *:not(.cosmic-scene) {
  opacity: 1;
  transform: none;
}

a,
button,
textarea {
  font: inherit;
}

button {
  border: none;
  background: none;
  color: inherit;
}

img {
  display: block;
  width: 100%;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.shell {
  width: min(1280px, calc(100vw - 40px));
  margin: 0 auto;
}

.cosmic-scene {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: #000;
}

.cosmic-layer {
  position: absolute;
  inset: 0;
}

.cosmic-video-shell {
  background: #02040a;
}

.cosmic-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 0.6s ease;
}

.cosmic-video.is-active {
  opacity: 1;
}

.cosmic-image-base {
  background:
    linear-gradient(180deg, rgba(3, 4, 10, 0.02) 0%, rgba(3, 4, 10, 0.12) 100%),
    url("/assets/star-face-cover.jpg") center center / cover no-repeat;
  opacity: 0;
}

.workspace {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 24px;
  padding: 28px 0 40px;
  align-items: start;
}

.content-panel,
.mini-panel,
.profile-card,
.teaching-card,
.experience-card,
.tag,
.chip,
textarea,
.answer-box,
.source-list li,
.contact-list li,
.status-pill,
.single-list li,
.source-empty {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow), var(--inner-glow), var(--glass-line);
}

.content-panel::before,
.mini-panel::before,
.profile-card::before,
.teaching-card::before,
.experience-card::before,
.tag::before,
.chip::before,
.answer-box::before,
.source-list li::before,
.contact-list li::before,
.status-pill::before,
.single-list li::before,
.source-empty::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.026) 18%, rgba(255, 255, 255, 0) 40%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0) 34%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.04) 0%, rgba(0, 0, 0, 0.08) 100%);
  pointer-events: none;
}

.side-dock {
  position: sticky;
  top: 24px;
  align-self: start;
  padding: 8px 0 8px 0;
  margin-left: -169px;
  border: none;
  box-shadow: none;
  background: none;
}

.section-kicker,
.mini-title,
.profile-label {
  margin: 0 0 18px;
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.dock-list {
  display: grid;
  gap: 26px;
  justify-items: start;
}

.dock-button {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  min-width: 144px;
  padding: 16px 18px;
  border-radius: 24px;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.038) 0%, rgba(8, 11, 20, 0.2) 22%, rgba(8, 11, 20, 0.1) 100%);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow), var(--inner-glow), var(--glass-line);
  position: relative;
  overflow: hidden;
}

.dock-button::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(120deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.03) 18%, rgba(255, 255, 255, 0) 40%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0) 34%);
  pointer-events: none;
}

.dock-button:hover,
.dock-button.active {
  transform: translateY(-1px);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(8, 11, 20, 0.24) 24%, rgba(8, 11, 20, 0.12) 100%);
  border: 1px solid var(--panel-border);
  box-shadow: var(--shadow), var(--inner-glow), var(--glass-line);
}

.dock-text strong {
  font-size: 17px;
}

.content-column {
  display: grid;
  gap: 24px;
  width: min(100%, 1060px);
  margin: 0 auto;
}

.content-panel {
  padding: 34px;
  border-radius: 36px;
  scroll-margin-top: 24px;
  background:
    radial-gradient(circle at 88% 100%, rgba(121, 64, 116, 0.12), transparent 32%),
    radial-gradient(circle at 10% 0%, rgba(89, 104, 176, 0.08), transparent 26%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.045) 0%, rgba(8, 11, 20, 0.24) 18%, rgba(8, 11, 20, 0.12) 100%),
    linear-gradient(180deg, rgba(8, 11, 20, 0.34) 0%, rgba(8, 11, 20, 0.16) 100%);
}

.hero-panel {
  padding-top: 42px;
}

.section-head {
  display: grid;
  gap: 14px;
  margin-bottom: 28px;
}

.section-head.compact {
  margin-bottom: 22px;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  line-height: 1.08;
}

h1 {
  font-size: clamp(54px, 8vw, 100px);
}

h2 {
  font-size: clamp(28px, 4vw, 42px);
}

h3 {
  font-size: 22px;
}

.single-copy,
.single-list,
.contact-list,
.flow-list,
.source-list,
.experience-copy p,
.teaching-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.85;
  font-size: 17px;
}

.single-copy.compact {
  font-size: 16px;
}

.intro-body {
  max-width: 72ch;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 390px);
  gap: 24px;
  align-items: stretch;
}

.hero-main {
  display: grid;
  gap: 22px;
}

.intro-detail-panel {
  display: grid;
  gap: 22px;
}

.intro-card-copy {
  display: grid;
  gap: 0;
}

.intro-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.detail-block {
  display: grid;
  gap: 12px;
  align-content: start;
}

.intro-contact-list,
.intro-focus-list {
  margin-top: 0;
}

.metrics-grid,
.qa-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.mini-panel {
  padding: 22px;
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.042) 0%, rgba(8, 11, 20, 0.22) 18%, rgba(8, 11, 20, 0.1) 100%);
}

.profile-card {
  display: flex;
    border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.042) 0%, rgba(8, 11, 20, 0.22) 18%, rgba(8, 11, 20, 0.1) 100%);
}

.profile-photo {
  flex: 1;
  min-height: 100%;
  overflow: hidden;
  border-radius: inherit;
  background: rgba(5, 8, 16, 0.28);
}

.profile-photo img,
.teaching-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center top;
}

.contact-list,
.single-list,
.source-list {
  list-style: none;
  padding: 0;
}

.contact-list {
  display: grid;
  gap: 12px;
}

.contact-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border-radius: 22px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.038) 0%, rgba(8, 11, 20, 0.2) 22%, rgba(8, 11, 20, 0.1) 100%);
}

.contact-list span {
  color: var(--muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.tag,
.chip {
  padding: 12px 16px;
  border-radius: 18px;
  color: var(--text);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(8, 11, 20, 0.18) 26%, rgba(8, 11, 20, 0.08) 100%);
}

.single-list {
  display: grid;
  gap: 14px;
  margin-top: 10px;
}

.single-list li {
  padding: 16px 18px;
  border-radius: 22px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.038) 0%, rgba(8, 11, 20, 0.2) 22%, rgba(8, 11, 20, 0.1) 100%);
}

.experience-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.experience-card {
  padding: 24px;
  border-radius: 26px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.038) 0%, rgba(8, 11, 20, 0.2) 22%, rgba(8, 11, 20, 0.1) 100%);
}

.experience-index {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  border-radius: 16px;
  font-weight: 700;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.045) 0%, rgba(8, 11, 20, 0.22) 18%, rgba(8, 11, 20, 0.1) 100%);
  box-shadow: var(--shadow), var(--inner-glow), var(--glass-line);
}

.experience-copy {
  display: grid;
  gap: 10px;
}

.cards-grid {
  display: grid;
  gap: 22px;
}

.teaching-card {
  display: grid;
  grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
  border-radius: 30px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.038) 0%, rgba(8, 11, 20, 0.2) 22%, rgba(8, 11, 20, 0.1) 100%);
}

.teaching-body {
  padding: 24px;
}

.teaching-copy {
  display: grid;
  gap: 16px;
  margin-top: 16px;
}

.teaching-copy section {
  display: grid;
  gap: 10px;
  padding: 18px;
  border-radius: 22px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.038) 0%, rgba(8, 11, 20, 0.2) 22%, rgba(8, 11, 20, 0.1) 100%);
}

.teaching-copy p,
.teaching-copy h3 {
  margin: 0;
}

.teaching-copy a {
  color: var(--star-blue);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

.teaching-copy a:hover,
.teaching-copy a:focus-visible {
  color: var(--star-blue-bright);
  text-shadow: 0 0 14px rgba(99, 169, 255, 0.42);
}

.flow-list {
  padding-left: 18px;
}

.flow-list li + li {
  margin-top: 10px;
}

.prompt-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.chip {
  cursor: pointer;
  text-align: left;
  transition: transform 0.2s ease;
}

.chip:hover,
.button:hover {
  transform: translateY(-1px);
}

textarea {
  width: 100%;
  min-height: 170px;
  resize: vertical;
  margin-top: 10px;
  padding: 18px;
  border-radius: 24px;
  color: var(--text);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.038) 0%, rgba(8, 11, 20, 0.2) 22%, rgba(8, 11, 20, 0.1) 100%);
}

textarea:focus {
  outline: 2px solid rgba(255, 255, 255, 0.14);
}

.chat-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 16px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button.primary {
  color: #06080e;
  font-weight: 700;
  background: linear-gradient(145deg, rgba(247, 250, 255, 0.98), rgba(244, 196, 223, 0.9));
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.18);
}

.status-pill {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  white-space: nowrap;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.038) 0%, rgba(8, 11, 20, 0.2) 22%, rgba(8, 11, 20, 0.1) 100%);
}

.answer-panel {
  margin-top: 20px;
}

.answer-box {
  margin: 16px 0 22px;
  padding: 20px;
  min-height: 220px;
  white-space: pre-wrap;
  word-break: break-word;
  border-radius: 24px;
  color: var(--text);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.038) 0%, rgba(8, 11, 20, 0.2) 22%, rgba(8, 11, 20, 0.1) 100%);
}

.sources {
  display: grid;
  gap: 14px;
}

.source-list {
  display: grid;
  gap: 12px;
}

.source-list li {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 16px;
  border-radius: 18px;
}

.source-empty {
  padding: 14px 16px;
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.038) 0%, rgba(8, 11, 20, 0.2) 22%, rgba(8, 11, 20, 0.1) 100%);
}

.qa-shell {
  display: flex;
  justify-content: center;
  order: 2;
}

.gemini-panel {
  width: min(100%, 920px);
  border-radius: 34px;
}

.gemini-composer-panel {
  padding: 28px;
  background:
    linear-gradient(180deg, rgba(18, 22, 34, 0.62) 0%, rgba(10, 13, 22, 0.46) 100%);
}

.gemini-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.gemini-mode {
  flex-shrink: 0;
}

#qa textarea {
  min-height: 148px;
  margin-top: 0;
  border-radius: 30px;
  padding: 22px 24px;
  font-size: 18px;
  line-height: 1.75;
  background:
    linear-gradient(180deg, rgba(15, 20, 34, 0.86) 0%, rgba(11, 15, 26, 0.74) 100%);
}

.gemini-chips {
  margin-top: 18px;
}

.gemini-chips .chip {
  padding: 14px 18px;
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(18, 22, 34, 0.82) 0%, rgba(12, 16, 28, 0.64) 100%);
}

.gemini-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
  margin-top: 20px;
}

.gemini-hints {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.gemini-hint {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035) 0%, rgba(8, 11, 20, 0.14) 100%);
}

.gemini-send {
  min-width: 108px;
}

.gemini-answer-panel {
  width: min(100%, 920px);
  margin: 0 auto;
  padding: 26px;
  order: 1;
}

#qa.content-panel {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

#qa .section-head {
  margin-bottom: 0;
  order: 0;
}

.gemini-answer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.gemini-answer-badge {
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: rgba(245, 247, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035) 0%, rgba(8, 11, 20, 0.14) 100%);
}

.gemini-answer-box {
  min-height: 126px;
  margin: 18px 0 22px;
  border-radius: 28px;
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(14, 18, 30, 0.84) 0%, rgba(10, 14, 24, 0.72) 100%);
}

.gemini-source-list li {
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(18, 22, 34, 0.82) 0%, rgba(12, 16, 28, 0.64) 100%);
}

.loading-card {
  text-align: center;
}

.standalone-page {
  min-height: 100vh;
  padding: 28px 0 40px;
}

.standalone-shell {
  width: min(1080px, calc(100vw - 40px));
  margin: 0 auto;
}

.video-page-panel {
  display: grid;
  gap: 22px;
  padding: 30px;
}

.video-page-head {
  display: grid;
  gap: 10px;
}

.video-back {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background:
    linear-gradient(180deg, rgba(18, 22, 34, 0.52) 0%, rgba(10, 13, 22, 0.34) 100%);
}

.video-frame {
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background:
    linear-gradient(180deg, rgba(15, 20, 34, 0.86) 0%, rgba(11, 15, 26, 0.74) 100%);
  box-shadow: var(--shadow), var(--inner-glow), var(--glass-line);
}

.video-frame video {
  display: block;
  width: 100%;
  max-height: 76vh;
  background: #000;
}

@media (max-width: 1080px) {
  .workspace,
  .hero-layout,
  .intro-detail-grid,
  .experience-grid,
  .teaching-card,
  .qa-layout {
    grid-template-columns: 1fr;
  }

  .side-dock {
    position: static;
  }

  .dock-list {
    grid-template-columns: repeat(2, minmax(0, max-content));
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100vw - 20px, 1280px);
  }

  .workspace {
    padding-top: 20px;
  }

  .dock-list {
    grid-template-columns: 1fr;
  }

  .dock-button {
    min-width: 100%;
  }

  .content-panel,
  .mini-panel,
  .teaching-body {
    padding: 20px;
  }

  .chat-actions,
  .source-list li,
  .contact-list li {
    flex-direction: column;
    align-items: flex-start;
  }

  .gemini-toolbar,
  .gemini-answer-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .button.primary {
    width: 100%;
  }

  .gemini-send {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  body > *:not(.cosmic-scene),
  body.page-ready > *:not(.cosmic-scene) {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .cosmic-video-shell {
    display: none;
  }

  .cosmic-image-base {
    opacity: 1;
  }

  .dock-button,
  .chip,
  .button {
    transition: none;
  }
}