:root {
  --paper: #f4f0e7;
  --paper-soft: rgba(250, 248, 242, 0.88);
  --ink: #17231f;
  --muted: #66716b;
  --line: rgba(23, 35, 31, 0.18);
  --green: #5f7f70;
  --green-deep: #34594b;
  --added: #b68146;
  --shadow: rgba(35, 44, 39, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background:
    linear-gradient(rgba(23, 35, 31, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 35, 31, 0.025) 1px, transparent 1px),
    radial-gradient(circle at 76% 18%, rgba(255, 255, 255, 0.94), transparent 31%),
    linear-gradient(145deg, #eee9dd 0%, var(--paper) 42%, #ebe6da 100%);
  background-size: 24px 24px, 24px 24px, auto, auto;
  color: var(--ink);
  font-family: "Avenir Next", "PingFang SC", "Noto Sans CJK SC", sans-serif;
}

button,
a {
  font: inherit;
}

.room-shell,
#room-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
}

#room-canvas {
  display: block;
  opacity: 0;
  transition: opacity 700ms ease;
}

body.is-ready #room-canvas {
  opacity: 1;
}

.room-header {
  position: fixed;
  z-index: 5;
  top: clamp(16px, 2.4vw, 32px);
  right: clamp(16px, 2.4vw, 36px);
  left: clamp(16px, 2.4vw, 36px);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  pointer-events: none;
}

.identity-card,
.view-switcher,
.alignment-card,
.legend {
  border: 1px solid rgba(23, 35, 31, 0.24);
  background: rgba(250, 248, 242, 0.93);
  box-shadow: 4px 4px 0 rgba(23, 35, 31, 0.07);
  backdrop-filter: blur(8px);
}

.identity-card {
  min-width: min(360px, 54vw);
  padding: 17px 20px 18px;
  pointer-events: auto;
}

.eyebrow {
  display: block;
  margin-bottom: 7px;
  color: var(--green-deep);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.identity-card h1 {
  margin: 0;
  font-family: "Songti SC", "Noto Serif CJK SC", serif;
  font-size: clamp(24px, 2.4vw, 38px);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.identity-card p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.view-switcher {
  display: flex;
  gap: 4px;
  padding: 5px;
  pointer-events: auto;
}

.view-switcher button {
  border: 0;
  border-radius: 0;
  padding: 10px 13px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  transition: color 160ms ease, background 160ms ease;
}

.view-switcher a {
  display: inline-flex;
  align-items: center;
  padding: 10px 13px;
  color: var(--muted);
  text-decoration: none;
  font-size: 12px;
}

.view-switcher button:hover,
.view-switcher button:focus-visible,
.view-switcher a:hover,
.view-switcher a:focus-visible {
  color: var(--ink);
  outline: 1px solid var(--green);
  outline-offset: -2px;
}

.view-switcher button.is-active {
  background: var(--green-deep);
  color: #fff;
}

.alignment-card {
  position: fixed;
  z-index: 5;
  right: clamp(16px, 2.4vw, 36px);
  bottom: clamp(18px, 3vw, 42px);
  width: min(390px, calc(100vw - 32px));
  padding: 15px 17px;
}

.alignment-card::before {
  content: "";
  display: block;
  width: 30px;
  height: 2px;
  margin-bottom: 10px;
  background: var(--green-deep);
}

.alignment-index {
  display: none;
}

.alignment-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
}

.alignment-card p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.legend {
  position: fixed;
  z-index: 5;
  bottom: clamp(18px, 3vw, 42px);
  left: clamp(16px, 2.4vw, 36px);
  display: flex;
  gap: 16px;
  padding: 10px 13px;
  color: var(--muted);
  font-size: 10px;
}

.room-tooltip {
  position: fixed;
  z-index: 8;
  display: none;
  transform: translate(14px, 14px);
  padding: 7px 10px;
  border: 1px solid rgba(23, 35, 31, 0.28);
  background: rgba(250, 248, 242, 0.94);
  box-shadow: 3px 4px 0 rgba(23, 35, 31, 0.08);
  color: var(--ink);
  font-size: 11px;
  pointer-events: none;
}

.room-tooltip.is-visible {
  display: block;
}

.room-panel {
  position: fixed;
  z-index: 9;
  top: clamp(118px, 16vh, 170px);
  right: clamp(20px, 3vw, 46px);
  bottom: clamp(24px, 4vw, 52px);
  width: min(390px, calc(100vw - 40px));
  overflow: auto;
  padding: 28px 26px 30px;
  border: 1px solid rgba(23, 35, 31, 0.32);
  background: rgba(250, 248, 242, 0.97);
  box-shadow: 7px 8px 0 rgba(23, 35, 31, 0.09);
  backdrop-filter: blur(10px);
  transform: translateX(calc(100% + 80px));
  opacity: 0;
  pointer-events: none;
  transition: transform 360ms cubic-bezier(.22, .8, .24, 1), opacity 220ms ease;
}

.room-panel.is-open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.panel-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(23, 35, 31, 0.28);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
}

.panel-close:hover,
.panel-close:focus-visible {
  background: var(--green-deep);
  color: white;
  outline: none;
}

.panel-eyebrow {
  display: block;
  margin-bottom: 10px;
  color: var(--green-deep);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.room-panel h2 {
  margin: 0;
  padding-right: 34px;
  color: #000;
  font-family: "Songti SC", "Noto Serif CJK SC", serif;
  font-size: clamp(20px, 2.1vw, 28px);
  line-height: 1.3;
}

.panel-lead {
  margin: 13px 0 22px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.panel-list {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.panel-list a,
.panel-list .panel-static-item {
  display: block;
  padding: 13px 14px;
  border: 1px solid rgba(23, 35, 31, 0.18);
  color: var(--ink);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.panel-list a:hover,
.panel-list a:focus-visible {
  transform: translate(-2px, -2px);
  border-color: var(--green-deep);
  background: rgba(95, 127, 112, 0.08);
  outline: none;
}

.panel-list strong {
  display: block;
  font-size: 13px;
  line-height: 1.45;
}

.panel-list small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.55;
}

.panel-primary-link {
  display: inline-flex;
  margin-top: 18px;
  padding-bottom: 3px;
  border-bottom: 1px solid currentColor;
  color: var(--green-deep);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.room-quicknav {
  display: none;
}

.legend span {
  display: flex;
  align-items: center;
  gap: 7px;
}

.swatch {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(95, 127, 112, 0.15);
}

.swatch-added {
  background: var(--added);
  box-shadow: 0 0 0 3px rgba(182, 129, 70, 0.14);
}

.room-loading {
  position: fixed;
  z-index: 10;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 14px;
  background: var(--paper);
  transition: opacity 500ms ease, visibility 500ms ease;
}

.room-loading span {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-top-color: var(--green-deep);
  border-radius: 50%;
  animation: room-spin 900ms linear infinite;
}

.room-loading p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.18em;
}

body.is-ready .room-loading {
  visibility: hidden;
  opacity: 0;
}

.fallback {
  position: fixed;
  z-index: 20;
  inset: 20% 10%;
  padding: 32px;
  background: var(--paper);
  border: 1px solid var(--ink);
}

@keyframes room-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 760px) {
  .room-header {
    display: block;
  }

  .identity-card {
    min-width: 0;
    width: min(238px, calc(100vw - 32px));
    padding: 11px 13px 12px;
  }

  .eyebrow {
    margin-bottom: 5px;
    font-size: 8px;
  }

  .identity-card h1 {
    font-size: 21px;
  }

  .identity-card p {
    display: none;
  }

  .view-switcher {
    position: fixed;
    top: auto;
    right: 16px;
    bottom: 66px;
  }

  .view-switcher button {
    padding: 9px 10px;
    font-size: 10px;
  }

  .view-switcher a {
    display: none;
  }

  .legend {
    display: none;
  }

  .alignment-card {
    display: none;
  }

  .room-panel {
    top: auto;
    right: 10px;
    bottom: 10px;
    left: 10px;
    width: auto;
    max-height: 68vh;
    padding: 24px 20px;
    transform: translateY(calc(100% + 30px));
  }

  .room-panel.is-open {
    transform: translateY(0);
  }

  .room-quicknav {
    position: fixed;
    z-index: 6;
    right: 10px;
    bottom: 10px;
    left: 10px;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    border: 1px solid rgba(23, 35, 31, 0.26);
    background: rgba(248, 246, 239, 0.94);
    box-shadow: 4px 5px 0 rgba(23, 35, 31, 0.08);
    backdrop-filter: blur(12px);
  }

  .room-quicknav button {
    min-width: 0;
    padding: 11px 4px;
    border: 0;
    border-right: 1px solid rgba(23, 35, 31, 0.14);
    background: transparent;
    color: var(--ink);
    font-size: 10px;
  }

  .room-quicknav button:last-child {
    border-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* The room's dark state is controlled by the physical switch beside the door. */
body,
#room-canvas,
.identity-card,
.view-switcher,
.alignment-card,
.legend,
.room-panel,
.room-quicknav {
  transition:
    color 420ms ease,
    background-color 420ms ease,
    border-color 420ms ease,
    box-shadow 420ms ease,
    filter 520ms ease;
}

.room-shell::after {
  position: fixed;
  z-index: 1;
  inset: 0;
  background:
    radial-gradient(circle at 22% 14%, rgba(164, 193, 205, 0.2), transparent 24%),
    linear-gradient(155deg, rgba(31, 49, 48, 0.05), rgba(3, 9, 12, 0.4));
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 520ms ease;
}

body.room-night {
  --paper: #101715;
  --paper-soft: rgba(18, 26, 23, 0.9);
  --ink: #e4ebe6;
  --muted: #aab7af;
  --line: rgba(224, 234, 227, 0.2);
  --green: #789f8e;
  --green-deep: #b2d5c4;
  --added: #d3a862;
  --shadow: rgba(0, 0, 0, 0.34);
  background:
    radial-gradient(circle at 20% 10%, rgba(111, 146, 154, 0.22), transparent 30%),
    radial-gradient(circle at 78% 74%, rgba(82, 111, 95, 0.12), transparent 34%),
    linear-gradient(145deg, #17211e 0%, #0e1513 52%, #090e0d 100%);
}

body.room-night #room-canvas {
  filter: brightness(0.84) saturate(0.78) contrast(1.08) sepia(0.04);
}

body.room-night .room-shell::after {
  opacity: 1;
}

body.room-night .identity-card,
body.room-night .view-switcher,
body.room-night .alignment-card,
body.room-night .legend,
body.room-night .room-panel,
body.room-night .room-quicknav {
  border-color: rgba(220, 233, 224, 0.22);
  background: rgba(17, 25, 22, 0.9);
  box-shadow: 6px 7px 0 rgba(0, 0, 0, 0.22);
}

body.room-night .identity-card,
body.room-night .identity-card h1,
body.room-night .identity-card h2,
body.room-night .identity-card p,
body.room-night .identity-card strong,
body.room-night .identity-card span,
body.room-night .view-switcher,
body.room-night .alignment-card,
body.room-night .legend,
body.room-night .room-panel,
body.room-night .room-panel h2,
body.room-night .room-panel h3,
body.room-night .room-panel p {
  color: #edf4ef;
}

body.room-night .identity-card,
body.room-night .identity-card a,
body.room-night .identity-card .tag,
body.room-night .view-switcher,
body.room-night .view-switcher button,
body.room-night .view-switcher a,
body.room-night .alignment-card,
body.room-night .legend,
body.room-night .room-panel,
body.room-night .panel-close,
body.room-night .room-quicknav,
body.room-night .room-quicknav button {
  border-color: rgba(231, 241, 234, 0.46);
}

body.room-night .view-switcher button,
body.room-night .view-switcher a,
body.room-night .room-quicknav button,
body.room-night .panel-close {
  color: var(--ink);
}

body.room-night .room-tooltip {
  border-color: rgba(220, 233, 224, 0.26);
  background: rgba(15, 23, 20, 0.96);
  color: var(--ink);
  box-shadow: 4px 5px 0 rgba(0, 0, 0, 0.24);
}

#room-panel-content > * + *,
#room-panel-content .panel-list > * + *,
#room-panel-content .panel-stack > * + * {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(23, 35, 31, 0.22);
}

#room-panel-content hr {
  display: block;
  width: 100%;
  height: 0;
  margin: 20px 0;
  border: 0;
  border-top: 1px solid rgba(23, 35, 31, 0.34);
}

#room-panel-content > div > * + *,
#room-panel-content > section > * + *,
#room-panel-content ul > li + li {
  width: 100%;
  box-sizing: border-box;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(23, 35, 31, 0.26);
}

body.room-night #room-panel-content > * + *,
body.room-night #room-panel-content .panel-list > * + *,
body.room-night #room-panel-content .panel-stack > * + * {
  border-top-color: rgba(229, 240, 232, 0.38);
}

body.room-night #room-panel-content hr,
body.room-night #room-panel-content > div > * + *,
body.room-night #room-panel-content > section > * + *,
body.room-night #room-panel-content ul > li + li {
  border-top-color: rgba(229, 240, 232, 0.5);
}

body.room-night #room-panel-content * {
  border-color: rgba(229, 240, 232, 0.46) !important;
}

.panel-static-item .brand-name {
  display: inline-block;
  margin: 0 0.16em;
  padding: 3px 9px 2px;
  border: 1.5px solid var(--ink);
  border-radius: 7px;
  background: var(--paper-soft);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82em;
  font-weight: 800;
  letter-spacing: 0.045em;
  line-height: 1.35;
  vertical-align: 0.08em;
  white-space: nowrap;
  box-shadow: 2px 2px 0 var(--shadow);
}

.panel-static-item .experience-meta,
.panel-static-item .experience-description {
  display: block;
}

.panel-static-item .experience-meta {
  margin-bottom: 8px;
  color: var(--green-deep);
  font-weight: 700;
}

.panel-static-item .experience-description {
  line-height: 1.75;
}

body.room-night .panel-static-item .brand-name {
  background: rgba(31, 43, 38, 0.94);
  color: #edf4ef;
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3);
}