/* ============ ThreeView 三维视界 ============ */
:root {
  --bg: #050506;
  --bg-2: #0b0c0f;
  --panel: rgba(255, 255, 255, 0.035);
  --panel-2: rgba(255, 255, 255, 0.06);
  --line: rgba(255, 255, 255, 0.09);
  --line-2: rgba(255, 255, 255, 0.16);
  --text: #e9ecf3;
  --muted: #98a0b0;
  --muted-2: #6b7280;
  --accent: #5b8cff;
  --accent-2: #a56bff;
  --grad: linear-gradient(135deg, #6ea8ff 0%, #8a7dff 50%, #b06bff 100%);
  --good: #34d399;
  --warn: #fbbf24;
  --bad: #f87171;
  --nav-h: 60px;
  --radius: 14px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { background: var(--bg); }
body {
  background:
    radial-gradient(1200px 700px at 75% -10%, rgba(91, 140, 255, 0.14), transparent 60%),
    radial-gradient(900px 600px at -10% 20%, rgba(165, 107, 255, 0.1), transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
img { max-width: 100%; }

/* ---------- boot loader (仿其域实景) ---------- */
.boot {
  position: fixed; inset: 0; z-index: 99998;
  background: #000;
  display: flex; flex-direction: column;
  justify-content: center; align-items: center;
  opacity: 1; transition: opacity .4s ease;
}
.boot.done { opacity: 0; pointer-events: none; }
.sk-cube { --cube-size: 88px; --sk-edge: calc(var(--cube-size) * .504);
  width: var(--cube-size); height: var(--cube-size);
  display: flex; justify-content: center; align-items: center; }
.sk-cube-body, .sk-cube-body i, .sk-cube-iso { transform-style: preserve-3d; }
.sk-cube-iso { width: var(--sk-edge); height: var(--sk-edge);
  transform: rotateX(-35.264deg) rotateY(45deg); }
.sk-cube-body { width: 100%; height: 100%;
  animation: 3s cubic-bezier(.68, 0, .35, 1) infinite sk-tumble; position: relative; }
.sk-cube-body i { display: block; position: absolute; inset: 0; }
.sk-cube-body i:nth-child(1) { transform: translateZ(calc(var(--sk-edge) / 2)); }
.sk-cube-body i:nth-child(2) { transform: rotateY(180deg) translateZ(calc(var(--sk-edge) / 2)); }
.sk-cube-body i:nth-child(3) { transform: rotateY(90deg) translateZ(calc(var(--sk-edge) / 2)); }
.sk-cube-body i:nth-child(4) { transform: rotateY(-90deg) translateZ(calc(var(--sk-edge) / 2)); }
.sk-cube-body i:nth-child(5) { transform: rotateX(90deg) translateZ(calc(var(--sk-edge) / 2)); }
.sk-cube-body i:nth-child(6) { transform: rotateX(-90deg) translateZ(calc(var(--sk-edge) / 2)); }
.sk-cube-body i::before, .sk-cube-body i::after {
  content: ""; box-sizing: border-box; position: absolute; inset: 0;
  backface-visibility: hidden;
}
.sk-cube-body i::before {
  background:
    radial-gradient(circle at 0 0, #fff 1.3px, #ffffff73 2px, #0000 3px),
    radial-gradient(circle at 100% 0, #fff 1.3px, #ffffff73 2px, #0000 3px),
    radial-gradient(circle at 0 100%, #fff 1.3px, #ffffff73 2px, #0000 3px),
    radial-gradient(circle at 100% 100%, #fff 1.3px, #ffffff73 2px, #0000 3px),
    #ffffff0f;
  border: .6px solid #fff;
  box-shadow: 0 0 0 .5px #fff, 0 0 1.5px .5px #ffffff80, inset 0 0 4px #ffffff1a;
}
.sk-cube-body i::after {
  background: #ffffff08; border: 1px solid #fff3;
  transform: rotateY(180deg); box-shadow: inset 0 0 14px #ffffff6b;
}
@keyframes sk-tumble {
  0% { transform: rotateY(0) rotate(0) rotateX(0); }
  33.333% { transform: rotateY(0) rotate(0) rotateX(90deg); }
  66.667% { transform: rotateY(0) rotate(90deg) rotateX(90deg); }
  to { transform: rotateY(90deg) rotate(90deg) rotateX(90deg); }
}
.sk-progress { color: #fffefa; margin: 26px 0 12px; font-size: 15px;
  font-variant-numeric: tabular-nums; letter-spacing: .5px; }
.sk-brand {
  font-size: 26px; font-weight: 700; letter-spacing: 6px;
  color: #fff; opacity: .92; text-indent: 6px;
  font-family: "Segoe UI", -apple-system, sans-serif;
}
.sk-brand::after { content: " 三维视界"; font-size: 12px; font-weight: 400;
  letter-spacing: 4px; opacity: .6; }

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); z-index: 900;
  display: flex; align-items: center; gap: 26px;
  padding: 0 22px;
  background: rgba(6, 6, 8, 0.72);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--line);
}
.nav.hidden { transform: translateY(-110%); opacity: 0; }
.nav { transition: transform .3s ease, opacity .3s ease; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px;
  background: var(--grad); color: #0a0a0c;
  display: grid; place-items: center;
  font-weight: 800; font-size: 17px;
  box-shadow: 0 4px 18px rgba(138, 125, 255, .45);
}
.brand-name { font-weight: 700; font-size: 16px; letter-spacing: .3px; display: flex; align-items: baseline; gap: 7px; }
.brand-name em { font-style: normal; font-size: 11px; color: var(--muted); font-weight: 500; letter-spacing: 3px; }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  padding: 8px 14px; border-radius: 9px; font-size: 14px; color: var(--muted);
  transition: .16s;
}
.nav-links a:hover { color: var(--text); background: var(--panel-2); }
.nav-links a.active { color: #fff; background: var(--panel-2); }
.nav-user { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav-user .link { font-size: 14px; color: var(--muted); padding: 7px 12px; border-radius: 9px; transition: .16s; }
.nav-user .link:hover { color: var(--text); background: var(--panel-2); }
.avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--grad); color: #0b0b0d;
  display: grid; place-items: center; font-weight: 700; font-size: 13px;
}
.usermenu { position: relative; display: flex; align-items: center; gap: 8px;
  padding: 5px 10px 5px 5px; border-radius: 999px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--line); font-size: 13.5px; }
.usermenu:hover { background: var(--panel-2); }
.usermenu .role { color: var(--muted); font-size: 11.5px; }
.dropdown {
  position: absolute; top: calc(100% + 10px); right: 0; min-width: 168px;
  background: #0d0e11; border: 1px solid var(--line-2); border-radius: 12px;
  padding: 6px; box-shadow: var(--shadow); z-index: 950; overflow: hidden;
}
.dropdown a, .dropdown button {
  display: block; width: 100%; text-align: left; padding: 9px 11px;
  font-size: 13.5px; color: var(--text); background: none; border: 0;
  border-radius: 8px; cursor: pointer;
}
.dropdown a:hover, .dropdown button:hover { background: var(--panel-2); }
.dropdown .sep { height: 1px; background: var(--line); margin: 5px 4px; }
.dropdown .danger { color: var(--bad); }

/* ---------- layout ---------- */
.page { max-width: 1220px; margin: 0 auto; padding: calc(var(--nav-h) + 34px) 22px 90px; }
.page.no-nav { padding-top: 34px; }
.full-page { min-height: 100vh; }
.section-title { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin: 46px 0 20px; }
.section-title h2 { margin: 0; font-size: 23px; letter-spacing: .5px; }
.section-title p { margin: 6px 0 0; color: var(--muted); font-size: 13.5px; }
.section-title .more { color: var(--accent); font-size: 13.5px; }
.section-title .more:hover { text-decoration: underline; }

/* ---------- buttons / inputs ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: 11px; font-size: 14px; cursor: pointer;
  border: 1px solid var(--line-2); background: var(--panel-2); color: var(--text);
  transition: .16s; user-select: none;
}
.btn:hover { background: rgba(255, 255, 255, .1); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.btn.primary { background: var(--grad); border-color: transparent; color: #0a0a0c; font-weight: 600; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.sm { padding: 7px 12px; font-size: 13px; border-radius: 9px; }
.btn.danger { color: var(--bad); border-color: rgba(248, 113, 113, .35); background: rgba(248, 113, 113, .1); }
.btn.danger:hover { background: rgba(248, 113, 113, .18); }
.btn.big { padding: 13px 26px; font-size: 15px; border-radius: 13px; }

.field { display: block; margin-bottom: 15px; }
.field span { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 7px; letter-spacing: .4px; }
.field.check { display: flex; align-items: center; gap: 9px; cursor: pointer; }
.field.check input[type="checkbox"] { width: 17px; height: 17px; accent-color: var(--accent); flex: none; }
.field.check span { margin: 0; font-size: 13px; color: var(--text); letter-spacing: 0; }
.input, textarea.input, select.input {
  width: 100%; padding: 11px 13px; border-radius: 11px; font-size: 14px;
  background: rgba(255, 255, 255, .045); color: var(--text);
  border: 1px solid var(--line); outline: none; transition: .16s;
}
.input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(91, 140, 255, .18); }
textarea.input { min-height: 92px; resize: vertical; }
select.input option { background: #101114; }
.input::placeholder { color: var(--muted-2); }
.hint { font-size: 12px; color: var(--muted-2); margin-top: 6px; }

/* ---------- hero ---------- */
.hero { position: relative; min-height: 520px; display: flex; align-items: center;
  margin-top: -10px; }
.hero-canvas { position: absolute; inset: -60px -22px 0 -22px; z-index: 0; }
.hero-canvas canvas { display: block; }
.hero-inner { position: relative; z-index: 2; max-width: 640px; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px;
  padding: 6px 13px; border-radius: 999px; color: #cdd6ff;
  background: rgba(91, 140, 255, .13); border: 1px solid rgba(91, 140, 255, .32);
  letter-spacing: 1px;
}
.hero h1 { margin: 20px 0 0; font-size: clamp(38px, 5.4vw, 62px); line-height: 1.1;
  letter-spacing: 1px; font-weight: 800; }
.hero h1 .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { color: var(--muted); font-size: 16px; line-height: 1.85; margin: 20px 0 30px; }
.hero-actions { display: flex; gap: 13px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 34px; margin-top: 44px; }
.hero-stats div b { display: block; font-size: 26px; font-weight: 800; letter-spacing: .5px; }
.hero-stats div span { font-size: 12.5px; color: var(--muted); }

/* ---------- feature strip ---------- */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.feature {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; transition: .2s;
}
.feature:hover { background: var(--panel-2); transform: translateY(-3px); border-color: var(--line-2); }
.feature .ico { width: 40px; height: 40px; border-radius: 11px; background: rgba(91, 140, 255, .16);
  display: grid; place-items: center; font-size: 19px; margin-bottom: 13px; }
.feature h3 { margin: 0 0 7px; font-size: 15.5px; }
.feature p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

/* ---------- gallery ---------- */
.filters { display: flex; gap: 9px; margin-bottom: 20px; flex-wrap: wrap; }
.chip { padding: 7px 15px; border-radius: 999px; font-size: 13px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--line); color: var(--muted); transition: .16s; }
.chip:hover { color: var(--text); border-color: var(--line-2); }
.chip.active { background: #fff; color: #0a0a0c; border-color: #fff; font-weight: 600; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(258px, 1fr)); gap: 18px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: .22s; cursor: pointer; position: relative;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); border-color: var(--line-2); background: var(--panel-2);
  box-shadow: 0 18px 44px rgba(0, 0, 0, .5); }
.card-thumb {
  aspect-ratio: 16 / 10; position: relative; overflow: hidden;
  background: linear-gradient(150deg, #101219, #171a24 55%, #1b1526);
  display: grid; place-items: center;
}
.card-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card-thumb .ph { opacity: .95; display: grid; place-items: center; gap: 4px; text-align: center; }
.card-thumb .ph .cube { font-size: 42px; filter: drop-shadow(0 6px 18px rgba(91, 140, 255, .5)); }
.card-thumb .ph .lbl { font-size: 11.5px; color: var(--muted); letter-spacing: 2px; }
.card-thumb::after { content: ""; position: absolute; inset: 0;
  background: radial-gradient(120% 80% at 50% 120%, rgba(91, 140, 255, .3), transparent 60%); }
.card-badge { position: absolute; z-index: 2; top: 10px; left: 10px; display: flex; gap: 6px; }
.badge { font-size: 11px; padding: 4px 9px; border-radius: 7px;
  background: rgba(8, 8, 10, .78); border: 1px solid var(--line-2); color: #cfd6e6;
  backdrop-filter: blur(6px); }
.badge.type { background: rgba(91, 140, 255, .85); border-color: transparent; color: #08090c; font-weight: 600; }
.badge.priv { background: rgba(251, 191, 36, .88); color: #231a02; border-color: transparent; font-weight: 600; }
.badge.lock { background: rgba(148, 163, 184, .9); color: #0d1117; border-color: transparent; font-weight: 600; }
.badge.live { background: rgba(52, 211, 153, .9); color: #05271d; border-color: transparent; font-weight: 600; }
.card-body { padding: 14px 15px 15px; }
.card-body h3 { margin: 0 0 6px; font-size: 15.5px; font-weight: 650; letter-spacing: .3px; }
.card-body p { margin: 0; color: var(--muted); font-size: 12.5px; line-height: 1.6;
  min-height: 40px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-meta { display: flex; align-items: center; gap: 10px; margin-top: 13px;
  padding-top: 11px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted-2); }
.card-meta .who { display: flex; align-items: center; gap: 6px; color: var(--muted); }
.card-meta .who i { width: 20px; height: 20px; border-radius: 50%; background: var(--grad);
  color: #0a0a0c; font-style: normal; font-size: 10.5px; font-weight: 800; display: grid; place-items: center; }
.card-meta .views { margin-left: auto; }

.empty { text-align: center; padding: 70px 20px; color: var(--muted);
  border: 1px dashed var(--line-2); border-radius: var(--radius); }
.empty .big { font-size: 40px; margin-bottom: 12px; opacity: .8; }

/* ---------- auth ---------- */
.auth-wrap { min-height: calc(100vh - var(--nav-h)); display: grid; place-items: center;
  padding: calc(var(--nav-h) + 30px) 20px 60px; }
.auth-card { width: 400px; max-width: 100%; background: rgba(12, 13, 17, .9);
  border: 1px solid var(--line-2); border-radius: 18px; padding: 34px 30px; box-shadow: var(--shadow); }
.auth-card h2 { margin: 0 0 6px; font-size: 24px; }
.auth-card .sub { color: var(--muted); font-size: 13.5px; margin-bottom: 26px; }
.auth-demo { margin-top: 18px; padding: 12px 14px; border-radius: 11px;
  background: rgba(91, 140, 255, .09); border: 1px solid rgba(91, 140, 255, .25);
  font-size: 12.5px; color: #b9c6ea; line-height: 1.9; }
.auth-demo code { background: rgba(0, 0, 0, .4); padding: 1px 7px; border-radius: 5px; cursor: pointer; }
.auth-alt { text-align: center; margin-top: 18px; font-size: 13px; color: var(--muted); }
.auth-alt a { color: var(--accent); }
.gate-card { text-align: center; }
.gate-icon { font-size: 40px; line-height: 1; margin-bottom: 10px; }
.gate-card .sub { margin-bottom: 22px; }
.gate-card form { text-align: left; }
.err { color: var(--bad); font-size: 13px; margin: 3px 0 12px; min-height: 18px; }

/* ---------- dashboard ---------- */
.toolbar { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; flex-wrap: wrap; }
.toolbar h1 { margin: 0; font-size: 24px; }
.toolbar .spacer { flex: 1; }
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 26px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.stat b { display: block; font-size: 26px; font-weight: 800; }
.stat span { color: var(--muted); font-size: 12.5px; }
.work-row { display: flex; gap: 14px; align-items: center; background: var(--panel);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 13px; margin-bottom: 12px; transition: .16s; }
.work-row:hover { background: var(--panel-2); border-color: var(--line-2); }
.work-row .th { width: 104px; height: 64px; border-radius: 10px; overflow: hidden; flex: none;
  background: linear-gradient(150deg, #111420, #1a1426); display: grid; place-items: center; font-size: 24px; }
.work-row .th img { width: 100%; height: 100%; object-fit: cover; }
.work-row .info { flex: 1; min-width: 0; }
.work-row .info h3 { margin: 0 0 4px; font-size: 15.5px; }
.work-row .info h3 .tag { font-size: 11px; font-weight: 500; color: var(--muted); border: 1px solid var(--line);
  border-radius: 6px; padding: 2px 7px; margin-left: 8px; vertical-align: middle; }
.work-row .info p { margin: 0; color: var(--muted); font-size: 12.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.work-row .ops { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

/* ---------- tables ---------- */
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th, .table td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); }
.table th { color: var(--muted); font-weight: 500; font-size: 12.5px; letter-spacing: .5px; }
.table tr:hover td { background: var(--panel); }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 6px 4px; overflow-x: auto; }

/* ---------- upload ---------- */
.dropzone {
  border: 1.5px dashed var(--line-2); border-radius: 16px; padding: 44px 24px;
  text-align: center; cursor: pointer; transition: .18s; background: rgba(255, 255, 255, .02);
}
.dropzone:hover, .dropzone.over { border-color: var(--accent); background: rgba(91, 140, 255, .07); }
.dropzone .big { font-size: 40px; margin-bottom: 10px; }
.dropzone h3 { margin: 0 0 7px; font-size: 16px; }
.dropzone p { margin: 0; color: var(--muted); font-size: 13px; }
.preview-box { position: relative; aspect-ratio: 16/9; background: #08090c;
  border: 1px solid var(--line); border-radius: 14px; overflow: hidden; margin-bottom: 16px; }
.upload-grid { display: grid; grid-template-columns: 1fr 380px; gap: 24px; align-items: start; }
@media (max-width: 900px) { .upload-grid { grid-template-columns: 1fr; } }

/* ---------- 3D viewer page ---------- */
.viewer-page, .roam-page { position: fixed; inset: 0; z-index: 800; background: #050507; overflow: hidden; }
.viewer-host, .roam-host { position: absolute; inset: 0; }
.viewer-host canvas, .roam-host canvas { display: block; width: 100%; height: 100%; }
.stage-bar {
  position: absolute; left: 18px; right: 18px; top: 16px; z-index: 10;
  display: flex; align-items: center; gap: 12px; pointer-events: none;
}
.stage-bar > * { pointer-events: auto; }
.stage-title {
  background: rgba(8, 9, 12, .7); border: 1px solid var(--line-2);
  backdrop-filter: blur(12px); border-radius: 13px; padding: 10px 16px;
}
.stage-title h1 { margin: 0; font-size: 17px; letter-spacing: .3px; }
.stage-title p { margin: 3px 0 0; font-size: 12px; color: var(--muted); }
.stage-actions { margin-left: auto; display: flex; gap: 9px; flex-wrap: wrap; justify-content: flex-end; }
.glass-btn {
  background: rgba(8, 9, 12, .7); border: 1px solid var(--line-2); color: var(--text);
  backdrop-filter: blur(12px); border-radius: 11px; padding: 9px 14px; font-size: 13px;
  cursor: pointer; transition: .15s; display: inline-flex; align-items: center; gap: 7px;
}
.glass-btn:hover { background: rgba(255, 255, 255, .13); border-color: rgba(255, 255, 255, .32); }
.glass-btn.on { background: var(--grad); color: #0a0a0c; border-color: transparent; font-weight: 600; }
.stage-bottom {
  position: absolute; left: 18px; bottom: 16px; right: 18px; z-index: 10;
  display: flex; align-items: flex-end; gap: 12px; pointer-events: none;
}
.stage-bottom > * { pointer-events: auto; }
.tip-bar { background: rgba(8, 9, 12, .72); border: 1px solid var(--line); border-radius: 12px;
  padding: 9px 14px; font-size: 12.5px; color: var(--muted); backdrop-filter: blur(12px); }
.tip-bar kbd { background: rgba(255, 255, 255, .12); border: 1px solid var(--line-2);
  border-radius: 6px; padding: 1px 7px; font-size: 11.5px; color: #e7ecf7; margin: 0 2px; }

.loader-layer { position: absolute; inset: 0; z-index: 30; background: #050507;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  transition: opacity .4s ease; }
.loader-layer.fade { opacity: 0; pointer-events: none; }
.loader-layer .bar { width: min(340px, 64%); height: 3px; background: rgba(255, 255, 255, .12);
  border-radius: 3px; overflow: hidden; margin-top: 22px; }
.loader-layer .bar i { display: block; height: 100%; width: 0; background: var(--grad); transition: width .2s; }
.loader-layer .bar.indet i { width: 40% !important; animation: bar-indet 1.05s ease-in-out infinite; }
@keyframes bar-indet {
  0% { transform: translateX(-110%); }
  100% { transform: translateX(260%); }
}
.loader-layer .pct { margin-top: 10px; font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums;
  display: inline-flex; align-items: center; gap: 6px; }

/* ---------- roam model loading status ---------- */
.roam-model-status { position: absolute; top: 74px; left: 50%; transform: translateX(-50%); z-index: 22;
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 999px;
  background: rgba(8, 9, 12, .72); border: 1px solid var(--line-2); color: var(--muted);
  font-size: 12.5px; backdrop-filter: blur(12px); pointer-events: none; }

/* ---------- roam HUD ---------- */
.roam-hud { position: absolute; inset: 0; z-index: 20; pointer-events: none; font-size: 13px; }
.roam-hud > * { pointer-events: auto; }
.hud-top { position: absolute; top: 14px; left: 16px; right: 16px; display: flex; gap: 10px; align-items: flex-start; }
.hud-title { background: rgba(8, 9, 12, .72); border: 1px solid var(--line-2); border-radius: 12px;
  padding: 9px 14px; backdrop-filter: blur(12px); }
.hud-title h1 { margin: 0; font-size: 15.5px; }
.hud-title span { font-size: 11.5px; color: var(--muted); }
.hud-cams { margin-left: auto; display: flex; gap: 7px; background: rgba(8, 9, 12, .72);
  border: 1px solid var(--line-2); border-radius: 12px; padding: 6px; backdrop-filter: blur(12px); }
.cam-btn { border: 0; background: transparent; color: var(--muted); font-size: 13px;
  padding: 7px 12px; border-radius: 8px; cursor: pointer; transition: .15s; white-space: nowrap; }
.cam-btn:hover { background: rgba(255, 255, 255, .1); color: #fff; }
.cam-btn.active { background: var(--grad); color: #08090c; font-weight: 700; }
.hud-bottom { position: absolute; bottom: calc(16px + env(safe-area-inset-bottom, 0px)); left: 16px; right: 16px;
  display: flex; align-items: flex-end; gap: 12px; }
.hud-help { background: rgba(8, 9, 12, .72); border: 1px solid var(--line); border-radius: 12px;
  padding: 11px 15px; backdrop-filter: blur(12px); color: var(--muted); line-height: 2.05;
  max-width: 440px; transition: .2s; }
.hud-help.hide { display: none; }
.hud-help b { color: #fff; font-weight: 600; }
.hud-help kbd { background: rgba(255, 255, 255, .12); border: 1px solid var(--line-2);
  border-radius: 6px; padding: 1px 7px; font-size: 11.5px; color: #e7ecf7; margin: 0 2px; }
.minimap-wrap { margin-left: auto; background: rgba(8, 9, 12, .75); border: 1px solid var(--line-2);
  border-radius: 13px; padding: 8px; backdrop-filter: blur(12px); text-align: center; }
.minimap-wrap canvas { display: block; border-radius: 8px; background: rgba(255, 255, 255, .04); }
.minimap-wrap span { display: block; font-size: 10.5px; color: var(--muted-2); margin-top: 5px; letter-spacing: 2px; }
.crosshair { position: absolute; left: 50%; top: 50%; width: 22px; height: 22px;
  transform: translate(-50%, -50%); }
.crosshair::before, .crosshair::after { content: ""; position: absolute; background: rgba(255, 255, 255, .85);
  box-shadow: 0 0 4px rgba(0, 0, 0, .8); }
.crosshair::before { left: 50%; top: 3px; width: 1.6px; height: 16px; transform: translateX(-50%); }
.crosshair::after { top: 50%; left: 3px; height: 1.6px; width: 16px; transform: translateY(-50%); }
.lock-tip { position: absolute; left: 50%; top: 62%; transform: translateX(-50%);
  background: rgba(8, 9, 12, .82); border: 1px solid var(--line-2); border-radius: 12px;
  padding: 13px 22px; font-size: 14px; color: #dfe6f5; backdrop-filter: blur(12px);
  text-align: center; cursor: pointer; pointer-events: auto; transition: .2s; }
.lock-tip:hover { border-color: var(--accent); }
.lock-tip.hide { opacity: 0; pointer-events: none; transform: translateX(-50%) scale(.96); }
.lock-tip small { display: block; color: var(--muted); font-size: 11.5px; margin-top: 5px; }
.speed-hint { position: absolute; bottom: 96px; left: 50%; transform: translateX(-50%);
  font-size: 12px; color: var(--muted); background: rgba(8, 9, 12, .7);
  border: 1px solid var(--line); border-radius: 999px; padding: 6px 15px;
  backdrop-filter: blur(10px); opacity: 0; transition: .25s; }
.speed-hint.show { opacity: 1; }

/* ---------- roam touch controls ---------- */
.roam-page, .roam-host, .roam-host canvas { touch-action: none; }
.joy {
  position: absolute; left: 0; top: 0; width: 128px; height: 128px; margin: -64px 0 0 -64px;
  border-radius: 50%; pointer-events: none; opacity: 0; transition: opacity .15s; z-index: 25;
}
.joy.on { opacity: 1; }
.joy > b {
  position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .3); background: rgba(10, 12, 18, .3);
  backdrop-filter: blur(4px);
}
.joy > i {
  position: absolute; left: 50%; top: 50%; width: 54px; height: 54px;
  transform: translate(-50%, -50%); border-radius: 50%;
  background: rgba(110, 168, 255, .55); border: 2px solid rgba(255, 255, 255, .55);
}
.touch-pad { position: absolute; right: 20px; bottom: calc(176px + env(safe-area-inset-bottom, 0px)); z-index: 26; display: none; }
.touch-pad .tbtn {
  width: 76px; height: 76px; border-radius: 50%; border: 1px solid var(--line-2);
  background: rgba(10, 12, 18, .5); color: #e7ecf7; font-size: 17px; font-weight: 700;
  backdrop-filter: blur(6px); touch-action: none; user-select: none; -webkit-user-select: none;
  display: flex; align-items: center; justify-content: center;
}
.touch-pad .tbtn.on { background: var(--grad); color: #0a0a0c; }
.roam-page.touch .touch-pad { display: flex; }
.roam-page.touch .hud-help { display: none; }

@media (pointer: coarse) {
  .cam-btn { padding: 9px 14px; font-size: 14px; }
  .minimap-wrap canvas { width: 108px; height: 108px; }
  .hud-title span { display: none; }
  .hud-title h1 { font-size: 14.5px; }
  .speed-hint { bottom: 120px; }
}

/* ---------- modal / toast ---------- */
.modal-back { position: fixed; inset: 0; z-index: 4000; background: rgba(0, 0, 0, .62);
  display: grid; place-items: center; backdrop-filter: blur(4px); animation: fadein .18s; }
.modal { width: min(430px, 92vw); background: #0d0e12; border: 1px solid var(--line-2);
  border-radius: 16px; padding: 26px 24px; box-shadow: var(--shadow); animation: pop .2s; }
.modal h3 { margin: 0 0 10px; font-size: 18px; }
.modal p { margin: 0 0 20px; color: var(--muted); font-size: 13.5px; line-height: 1.75; }
.modal .ops { display: flex; gap: 10px; justify-content: flex-end; }
@keyframes pop { from { transform: scale(.94); opacity: 0; } }
@keyframes fadein { from { opacity: 0; } }
.toast { position: fixed; z-index: 5000; left: 50%; top: 76px; transform: translateX(-50%) translateY(-14px);
  background: #101216; border: 1px solid var(--line-2); color: var(--text);
  padding: 11px 20px; border-radius: 12px; font-size: 13.5px; box-shadow: var(--shadow);
  opacity: 0; pointer-events: none; transition: .25s; max-width: 80vw; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { border-color: rgba(248, 113, 113, .5); color: #ffd9d9; }
.toast.ok { border-color: rgba(52, 211, 153, .45); color: #d6fff0; }

/* ---------- footer / misc ---------- */
.footer { border-top: 1px solid var(--line); margin-top: 70px; padding: 30px 0 10px;
  color: var(--muted-2); font-size: 12.5px; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
.spin { display: inline-block; width: 15px; height: 15px; border: 2px solid rgba(255, 255, 255, .25);
  border-top-color: #fff; border-radius: 50%; animation: sp .7s linear infinite; }
@keyframes sp { to { transform: rotate(360deg); } }

@media (max-width: 760px) {
  .nav-links { display: none; }
  .hero { min-height: 460px; }
  .hero-stats { gap: 20px; }
  .stage-bar { flex-direction: column; align-items: stretch; }
  .stage-actions { margin-left: 0; justify-content: flex-start; }
  .hud-cams { overflow-x: auto; max-width: 100%; }
  .work-row { flex-wrap: wrap; }
  .work-row .ops { width: 100%; justify-content: flex-start; }
}