/* 색은 모두 토큰으로 둔다. 기본은 브라우저 설정(어둡게·밝게)을 따르고, 위쪽 [자동·밝게·어둡게]로 고정할 수 있다. 색은 크롬 설정 화면과 같은 톤 */
:root {
  color-scheme: dark;
  --bg: #202124; --surface: #292a2d; --card: #292a2d; --sunken: #232427; --control: #35363a; --line: #3c4043;
  --text: #e8eaed; --dim: #9aa0a6; --accent: #8ab4f8; --on-accent: #202124; --accent-soft: rgba(138, 180, 248, .16);
  --red: #f28b82; --ok: #81c995; --warn-text: #f6aea9; --amber: #fdd663; --warn-bg: #3b3420;
  --danger-fill: #d93025; --board-bg: #1b1c1e; --grid: #303134; --shadow: 0 1px 3px rgba(0, 0, 0, .5);
  --notice-bg: #3b3420; --notice-text: #fde293; --notice-line: #fdd663; --tip-bg: #3c4043; --bezel: #0f1011; --info-bg: #23314a;
  font: 14px/1.55 system-ui, "Segoe UI", "Malgun Gothic", "Apple SD Gothic Neo", sans-serif;
  color: var(--text);
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --bg: #f8f9fa; --surface: #ffffff; --card: #ffffff; --sunken: #f1f3f4; --control: #ffffff; --line: #dadce0;
    --text: #202124; --dim: #5f6368; --accent: #1967d2; --on-accent: #ffffff; --accent-soft: rgba(26, 115, 232, .1);
    --red: #d93025; --ok: #188038; --warn-text: #c5221f; --amber: #f9ab00; --warn-bg: #fef7e0;
    --danger-fill: #d93025; --board-bg: #f1f3f4; --grid: #e3e5e8; --shadow: 0 1px 2px rgba(60, 64, 67, .3), 0 1px 3px 1px rgba(60, 64, 67, .15);
    --notice-bg: #fef7e0; --notice-text: #5f4b00; --notice-line: #f9ab00; --tip-bg: #3c4043; --bezel: #3c4043; --info-bg: #e8f0fe;
  }
}
:root[data-theme="light"] {
    color-scheme: light;
    --bg: #f8f9fa; --surface: #ffffff; --card: #ffffff; --sunken: #f1f3f4; --control: #ffffff; --line: #dadce0;
    --text: #202124; --dim: #5f6368; --accent: #1967d2; --on-accent: #ffffff; --accent-soft: rgba(26, 115, 232, .1);
    --red: #d93025; --ok: #188038; --warn-text: #c5221f; --amber: #f9ab00; --warn-bg: #fef7e0;
    --danger-fill: #d93025; --board-bg: #f1f3f4; --grid: #e3e5e8; --shadow: 0 1px 2px rgba(60, 64, 67, .3), 0 1px 3px 1px rgba(60, 64, 67, .15);
    --notice-bg: #fef7e0; --notice-text: #5f4b00; --notice-line: #f9ab00; --tip-bg: #3c4043; --bezel: #3c4043; --info-bg: #e8f0fe;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); }
body { accent-color: var(--accent); }
h1 { font-size: 16px; margin: 0; font-weight: 600; }
h1 small { color: var(--dim); font-size: 12px; font-weight: 400; margin-left: 4px; }
h2 { font-size: 16px; margin: 0 0 10px; font-weight: 600; }
section { min-width: 0; }
.dim { color: var(--dim); font-size: 12px; margin: 4px 0 10px; }
.label { color: var(--dim); font-size: 12px; margin: 0 0 6px; }
.warn { color: var(--warn-text); margin: 8px 0 0; }
.warn:empty { display: none; }
.hint { background: var(--accent-soft); border: 1px solid var(--accent); border-radius: 8px; padding: 8px 10px; margin: 10px 0 0; }
button, select, input { background: var(--control); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; font: inherit; }
button { border-radius: 6px; padding: 6px 12px; font-weight: 500; }
button:disabled { opacity: .45; cursor: default; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button { cursor: pointer; }
button:hover:not(:disabled) { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, var(--control)); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
button.primary:hover:not(:disabled) { background: color-mix(in srgb, var(--accent) 88%, var(--text)); }
button.danger { color: var(--red); }
.form { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 8px 12px; margin-bottom: 10px; }
.form label { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--dim); }
.ok { color: var(--ok); }
.off { color: var(--red); }
table { width: 100%; border-collapse: collapse; margin-top: 10px; }
td { padding: 5px 4px; border-bottom: 1px solid var(--line); font-size: 14px; }
td:last-child { text-align: right; white-space: nowrap; }

#charts { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
#charts:not(:empty) { margin-bottom: 12px; }
.chart-card { background: var(--sunken); border: 1px solid var(--line); border-radius: 8px; padding: 8px; cursor: grab; min-width: 0; }
.chart-card.dragging { opacity: .4; }
.chart-card.alerting { border-color: var(--red); }
.chart-card canvas { display: block; width: 100%; height: auto; border-radius: 4px; background: #0b0d11; }
.chart-card .row { display: flex; gap: 6px; margin-top: 6px; }
.chart-card input { flex: 1; min-width: 0; background: none; border-color: transparent; padding: 3px 4px; }
.chart-card input:focus { border-color: var(--accent); }
.chart-card button { padding: 2px 9px; }
.chart-card .state { font-size: 12px; padding: 0 4px; }
.chart-card .relink, .chart-card .to-board { width: 100%; margin-top: 4px; }
.chart-card .to-board.on { color: var(--dim); }
#pip-start.stop { background: var(--danger-fill); border-color: var(--danger-fill); color: #fff; }
.chart-card .test-fire { display: flex; align-items: center; gap: 4px; margin-top: 4px; padding: 3px 4px; border: 1px dashed var(--line); border-radius: 6px; font-size: 12px; color: var(--dim); }
.chart-card .test-fire span { flex: none; padding: 0 2px; }
.chart-card .test-fire button { flex: 1; min-width: 0; padding: 2px 0; font-size: 12px; }
.options label.sub { margin-left: 22px; font-size: 14px; }
details { margin-top: 10px; font-size: 14px; }
summary { cursor: pointer; color: var(--dim); }
.stage-row { display: grid; grid-template-columns: 52px auto 1fr 1fr auto; align-items: center; gap: 8px; margin-top: 8px; }
.colors { position: relative; display: flex; align-items: center; gap: 6px; }
.color-bar { width: 44px; height: 26px; padding: 0; border: 1px solid var(--line); border-radius: 6px; }
.color-bar::after { content: "▾"; color: #fff; font-size: 12px; text-shadow: 0 0 2px #000; margin-left: 22px; }
.color-menu { position: absolute; top: 30px; left: 0; z-index: 5; display: grid; gap: 2px; min-width: 120px; padding: 6px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 6px 18px rgba(0, 0, 0, .45); }
.color-menu[hidden] { display: none; }
.color-item { display: flex; align-items: center; gap: 8px; padding: 4px 8px; border: 1px solid transparent; background: none; text-align: left; }
.color-item:hover { background: var(--sunken); }
.color-item.on { border-color: var(--accent); }
.dot { width: 14px; height: 14px; border-radius: 50%; flex: none; }
.picker-input { position: absolute; width: 0; height: 0; padding: 0; border: 0; opacity: 0; pointer-events: none; }
.colors .custom { padding: 2px 8px; font-size: 12px; }
.colors .custom.on { border-color: var(--accent); }
.alert-master { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-bottom: 10px; font-size: 14px; }
.alert-master label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.alert-master input[type=range] { width: 140px; }
#stage-open { padding: 3px 12px; font-size: 14px; }
#stage-open[aria-expanded=true] { border-color: var(--accent); color: var(--accent); }
.stage-panel { background: var(--sunken); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin-bottom: 12px; }
.stage-panel .label { margin: 0; }
#alerts input[type=checkbox] { cursor: pointer; }
.log-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.log-head h2 { margin: 0; }
#log-clear { padding: 3px 10px; font-size: 14px; }
.log-table th { text-align: left; font-size: 12px; font-weight: 400; color: var(--dim); padding: 5px 4px; border-bottom: 1px solid var(--line); }
.log-table td:last-child { text-align: left; }
.log-table .dot { display: inline-block; margin-right: 6px; vertical-align: -2px; }
tr.log-test td { color: var(--dim); }
tr.alert-off td { color: var(--dim); }
.stage-row select { min-width: 0; }
.sound-file { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.sound-file .dim { margin: 0; }

.add-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.add-row label { display: inline-flex; align-items: center; gap: 4px; font-size: 14px; cursor: pointer; }

.record-box { display: flex; align-items: center; gap: 8px; }
#record-note { color: var(--dim); font-size: 12px; }
#record { color: var(--red); padding: 3px 10px; font-size: 14px; }
#pause { padding: 3px 10px; font-size: 14px; }
#pause.on { background: var(--amber); border-color: var(--amber); color: #202124; font-weight: 600; }
.paused-note { background: var(--warn-bg); border: 1px solid var(--amber); border-radius: 6px; padding: 8px 10px; margin: 12px 0 0; }
#record.on { background: var(--red); border-color: var(--red); color: #fff; }

.pip-setup { display: flex; gap: 20px; flex-wrap: wrap; }
#screen { display: grid; grid-template: repeat(3, 1fr) / repeat(3, 1fr); gap: 3px; width: 256px; aspect-ratio: 16 / 9; padding: 4px; background: var(--board-bg); border: 1px solid var(--line); border-radius: 8px; flex: none; }
#screen button { padding: 0; border-radius: 3px; background: var(--control); }
#screen button.on { background: var(--accent); border-color: var(--accent); }
.options { display: grid; gap: 5px; margin-top: 10px; font-size: 14px; }
.options label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.grip { position: fixed; z-index: 3; }
body.locked .grip { display: none; }
.grip-n, .grip-s { left: 12px; right: 12px; height: 8px; cursor: ns-resize; }
.grip-e, .grip-w { top: 12px; bottom: 12px; width: 8px; cursor: ew-resize; }
.grip-n { top: 0; } .grip-s { bottom: 0; } .grip-e { right: 0; } .grip-w { left: 0; }
.grip-ne, .grip-nw, .grip-se, .grip-sw { width: 14px; height: 14px; }
.grip-ne { top: 0; right: 0; cursor: nesw-resize; } .grip-sw { bottom: 0; left: 0; cursor: nesw-resize; }
.grip-nw { top: 0; left: 0; cursor: nwse-resize; } .grip-se { bottom: 0; right: 0; cursor: nwse-resize; }
.quality { display: inline-flex; align-items: center; gap: 6px; margin-top: 10px; font-size: 14px; }
.board-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 4px; }
.tools { display: grid; gap: 8px; margin: 10px 0 14px; padding: 10px 12px; background: var(--sunken); border: 1px solid var(--line); border-radius: 8px; }
.tool-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 14px; }
.tool-group .label { margin: 0; min-width: 88px; }
.tool-group button { padding: 4px 10px; font-size: 14px; }
.tool-group label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.tools #layouts { display: flex; flex-wrap: wrap; gap: 6px; }
.tools #board-note { margin: 0; }
.board-item.selected { border-color: #ffd60a; box-shadow: 0 0 0 2px rgba(255, 214, 10, .35); }
.board-head .label { margin: 0; }
#board-clear, #board-remove { padding: 3px 10px; font-size: 14px; white-space: nowrap; }
.board-buttons { display: inline-flex; gap: 6px; }
.board { position: relative; width: 100%; margin-top: 6px; background-color: var(--board-bg); border: 1px solid var(--line); border-radius: 10px; background-image: linear-gradient(to right, var(--grid) 1px, transparent 1px), linear-gradient(to bottom, var(--grid) 1px, transparent 1px); background-size: calc(100% / 9) calc(100% / 9); overflow: hidden; user-select: none; }
.board.drop { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.board-empty { position: absolute; inset: 0; margin: 0; display: flex; align-items: center; justify-content: center; color: var(--dim); font-size: 14px; pointer-events: none; }
.board-item { position: absolute; box-sizing: border-box; background: color-mix(in srgb, var(--accent) 22%, transparent); border: 2px solid var(--accent); border-radius: 6px; cursor: move; overflow: hidden; }
.board-item span { position: absolute; left: 6px; top: 4px; font-size: 12px; color: var(--text); pointer-events: none; white-space: nowrap; }
.board-item .remove { position: absolute; right: 2px; top: 2px; padding: 0 6px; font-size: 12px; line-height: 18px; }
.board-item .resize { position: absolute; }
.board-item .resize:hover { background: color-mix(in srgb, var(--accent) 55%, transparent); }
.board-item .resize.n { left: 0; right: 0; top: -2px; height: 7px; cursor: ns-resize; }
.board-item .resize.s { left: 0; right: 0; bottom: -2px; height: 7px; cursor: ns-resize; }
.board-item .resize.w { top: 0; bottom: 0; left: -2px; width: 7px; cursor: ew-resize; }
.board-item .resize.e { top: 0; bottom: 0; right: -2px; width: 7px; cursor: ew-resize; }
.board-item .remove { right: 8px; top: 6px; }
.board-item span { left: 10px; top: 6px; }
.board-marquee { position: absolute; border: 1px dashed #ffd60a; background: rgba(255, 214, 10, .12); pointer-events: none; }
.section-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.section-head h2 { margin: 0; }
#pip-start { padding: 4px 16px; }
.section-head .warn { margin: 0; }
.presets { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.presets .label { margin: 0; }
.presets button { padding: 4px 10px; font-size: 14px; }
body.pip.free { display: block; position: relative; }
body.pip.free .tile { position: absolute; }
#layouts { display: grid; grid-template-columns: repeat(3, 56px); gap: 6px; }
.layout { display: grid; gap: 2px; width: 56px; height: 38px; padding: 4px; border-radius: 8px; }
.layout i { background: var(--dim); border-radius: 1px; opacity: .6; }
.layout.on { border-color: var(--accent); }
.layout.on i { background: var(--accent); }

#picker { position: fixed; inset: 0; background: rgba(6, 8, 12, .9); display: flex; align-items: center; justify-content: center; padding: 16px; z-index: 10; }
#picker[hidden] { display: none; }
.picker-box { max-width: 100%; max-height: 100%; }
.picker-box p { text-align: center; margin: 0 0 8px; }
#stage { position: relative; cursor: crosshair; line-height: 0; user-select: none; }
#stage video { display: block; max-width: calc(100vw - 32px); max-height: calc(100vh - 80px); pointer-events: none; }
#sel { position: absolute; border: 2px solid var(--accent); background: rgba(79, 140, 255, .18); pointer-events: none; }

/* 코너뷰 창: 사진의 기본 레이아웃처럼 칸 사이 얇은 선과 화면만 둔다 */
body.pip { display: grid; height: 100vh; min-height: 0; gap: 1px; padding: 0; overflow: hidden; background: #2a303c; }
.tile { position: relative; min-width: 0; min-height: 0; overflow: hidden; background: #0b0d11; }
.tile video { position: absolute; max-width: none; object-fit: fill; }
.tile.zoomed { position: fixed; inset: 0; z-index: 2; }
.pop-bar { display: none; }
body.popped .grip { display: none; }
body.popped .pop-bar { display: flex; gap: 10px; position: fixed; left: 50%; bottom: 14px; transform: translateX(-50%); z-index: 4; }
.pop-bar button { padding: 10px 18px; font-size: 16px; font-weight: 600; background: rgba(21, 25, 33, .92); border: 1px solid #8ab4f8; color: #fff; border-radius: 8px; white-space: nowrap; }
.pop-bar button:last-child { background: #1a73e8; }
.tile-label { position: absolute; left: 5px; top: 5px; z-index: 1; font-size: 12px; line-height: 1.2; color: #fff; text-shadow: 0 0 2px #000, 0 1px 3px #000; pointer-events: none; white-space: nowrap; }
.tile::after { content: ""; position: absolute; inset: 0; pointer-events: none; }
.tile.off::after { border: 3px dashed #9aa1ad; }
.tile.alerting { cursor: pointer; }
.tile.alerting::after { border: 4px solid var(--flash); animation: flash var(--flash-ms) steps(2, jump-none) infinite; }
@keyframes flash { from { border-color: var(--flash); } to { border-color: transparent; } }

/* 차트 카드 크게 보기 */
.chart-card canvas { cursor: zoom-in; }
.zoom-layer { position: fixed; inset: 0; z-index: 50; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; background: rgba(5, 7, 10, .85); cursor: zoom-out; }
.zoom-layer canvas { max-width: 90vw; max-height: 82vh; border-radius: 6px; box-shadow: 0 8px 40px rgba(0, 0, 0, .6); }
.zoom-layer p { margin: 0; color: #cfd6e4; font-size: 14px; }

/* 프리셋 이름 */
.presets #preset-name { width: 130px; }

/* 알림 기록 더보기 */
.log-more { display: block; width: 100%; margin-top: 6px; }
.log-more[hidden] { display: none; }

/* (?) 도움말: 마우스를 올리거나 눌러 초점이 가면 설명이 뜬다 */
.help { position: relative; display: inline-flex; align-items: center; justify-content: center; width: 16px; height: 16px; margin-left: 4px; border: 1px solid var(--dim); border-radius: 50%; color: var(--dim); font-size: 12px; font-weight: 700; line-height: 1; cursor: help; vertical-align: middle; text-transform: none; letter-spacing: 0; }
.help:hover, .help:focus { color: var(--text); border-color: var(--text); outline: none; }
/* (?) 도움말: 말풍선은 하나(#tip)를 화면 안에 들어오도록 자리 잡아 띄운다(app.js showTip) */
#tip { position: fixed; z-index: 60; max-width: min(340px, calc(100vw - 16px)); padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--tip-bg); color: #e8eaed; font-size: 12px; font-weight: 400; line-height: 1.5; text-align: left; white-space: normal; box-shadow: 0 6px 20px rgba(0, 0, 0, .5); pointer-events: none; }
#tip[hidden] { display: none; }

/* 잘 보이는 안내: 화면 위쪽 가운데에 잠깐 뜬다 */
.notice { position: fixed; top: 16px; left: 50%; transform: translateX(-50%); z-index: 100; display: flex; align-items: flex-start; gap: 10px; max-width: min(560px, calc(100vw - 32px)); padding: 12px 14px; border: 1px solid var(--notice-line); border-left-width: 4px; border-radius: 10px; background: var(--notice-bg); color: var(--notice-text); font-size: 14px; line-height: 1.5; box-shadow: 0 10px 30px rgba(0, 0, 0, .55); }
.notice[hidden] { display: none; }
.notice.show { animation: notice-in .18s ease-out; }
.notice button { flex: none; padding: 0 4px; border: 0; background: none; color: inherit; font-size: 16px; line-height: 1; cursor: pointer; }
@keyframes notice-in { from { opacity: 0; transform: translate(-50%, -8px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ---- A. 대시보드형: 위쪽 줄 + 세 칸(차트 | 코너뷰 | 알림) ---- */
/* 위쪽 줄은 화면 모드와 관계없이 검은 바탕. 안의 버튼·메뉴도 어두운 색 토큰을 쓴다 */
.topbar {
  position: sticky; top: 0; z-index: 30; display: flex; align-items: center; flex-wrap: wrap; gap: 12px; padding: 10px 24px;
  color-scheme: dark;
  --surface: #1f1f1f; --sunken: #1a1a1a; --control: #262626; --line: #3a3a3a;
  --text: #f1f3f4; --dim: #a8adb3; --accent: #8ab4f8; --on-accent: #111111; --accent-soft: rgba(138, 180, 248, .18);
  --ok: #81c995; --amber: #fdd663; --red: #f28b82;
  background: #111111; color: var(--text); border-bottom: 1px solid #000;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--accent); }
.brand h1 { color: var(--text); }
.spacer { flex: 1; }
.privacy { color: var(--dim); font-size: 12px; }
.pill { display: inline-flex; align-items: center; gap: 8px; padding: 4px 12px; border-radius: 999px; font-size: 14px; background: var(--sunken); color: var(--dim); }
.pill::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.pill.live { background: color-mix(in srgb, var(--ok) 16%, transparent); color: var(--ok); }
.pill.paused { background: color-mix(in srgb, var(--amber) 18%, transparent); color: var(--text); }
.pill.paused::before { background: var(--amber); }
.segmented { display: inline-flex; padding: 2px; border: 1px solid var(--line); border-radius: 18px; background: var(--sunken); }
.segmented button { border: 0; background: none; padding: 3px 12px; font-size: 14px; color: var(--dim); }
.segmented button:hover:not(:disabled) { background: none; color: var(--text); }
.segmented button[aria-checked="true"] { background: var(--accent-soft); color: var(--accent); }
#record, #pause, #intro-show { padding: 4px 12px; font-size: 14px; }

.banners { max-width: 1680px; margin: 0 auto; padding: 0 24px; }
.banners > :not([hidden]) { margin-top: 12px; }

main.layout-a { display: grid; grid-template-columns: minmax(250px, 320px) minmax(0, 1fr); gap: 16px; align-items: start; max-width: 1440px; margin: 0 auto; padding: 16px 24px 32px; }
.col-charts #charts { grid-template-columns: 1fr; }
.count { color: var(--dim); font-weight: 400; font-size: 14px; }
.col-charts .add-row { gap: 10px; }
@media (max-width: 820px) {
  main.layout-a { grid-template-columns: minmax(0, 1fr); padding: 12px; }
  .col-charts #charts { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
  .topbar { padding: 10px 12px; }
  .privacy { display: none; }
}

/* ---- B. 단계 안내: 차트가 없을 때만 ---- */
.guide { max-width: 1632px; margin: 16px auto 0; width: calc(100% - 48px); padding: 20px; }
.guide[hidden] { display: none; }
.stepper { list-style: none; margin: 0 0 18px; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.stepper li { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--sunken); }
.stepper li.now { border: 2px solid var(--accent); background: var(--accent-soft); }
.stepper b { flex: none; width: 30px; height: 30px; border-radius: 50%; display: flex; align-items: center; justify-content: center; background: var(--line); color: var(--dim); }
.stepper li.now b { background: var(--accent); color: var(--on-accent); }
.stepper span { display: flex; flex-direction: column; }
.stepper small { color: var(--dim); font-size: 12px; }
.guide-body { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.guide-body > div { flex: 1 1 420px; }
.guide-body h2 { font-size: 22px; margin-bottom: 6px; }
.guide-body p { margin: 0 0 8px; color: var(--dim); }
.guide-next { margin: 0; padding: 0; list-style: none; display: grid; gap: 4px; font-size: 14px; color: var(--dim); }
.guide-next b { color: var(--text); margin-right: 6px; }
button.big { padding: 12px 28px; font-size: 16px; border-radius: 8px; }
@media (max-width: 820px) {
  .guide { width: calc(100% - 24px); }
  .stepper { grid-template-columns: 1fr; }
}

/* 숨은 도움말이 오른쪽 끝에서 가로 스크롤을 만들지 않게: 보일 때만 그리고, 오른쪽 칸에서는 오른쪽에 맞춘다 */

/* 가격 알림 창의 알림 표: 좁은 칸에서도 단계·상태가 한 줄로 */
.drawer #alerts td { padding: 6px 3px; font-size: 12px; }
.drawer #alerts td:nth-child(n+4) { white-space: nowrap; }
.drawer #alerts td button { padding: 2px 10px; font-size: 12px; }

/* ---- 다시 디자인: 화면 배치도를 실제 모니터처럼, 나머지는 조용하게 ---- */
h2 { font-size: 16px; }
main.layout-a { gap: 0; }
main.layout-a > section { padding: 4px 24px 0; }
main.layout-a > .col-charts { padding-left: 0; }
.col-board { border-left: 1px solid var(--line); padding-right: 0 !important; }
.drawer > section + section { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line); }
@media (max-width: 820px) {
  main.layout-a > section { padding: 0; }
  .col-board { border-left: 0; margin-top: 24px; padding-top: 24px !important; border-top: 1px solid var(--line); }
}
.section-head { justify-content: space-between; }
.section-head h2 { display: flex; align-items: center; gap: 6px; }
.lead { margin: 0 0 12px; color: var(--dim); }
#start-note { margin: 0 0 8px; }
button.small { padding: 4px 10px; font-size: 14px; }
.add-row { margin-bottom: 12px; }

/* 위쪽 줄 */
.pill span + span::before { content: ""; display: inline-block; width: 1px; height: 12px; margin: 0 8px; background: currentColor; opacity: .35; vertical-align: -1px; }
#pip-start { padding: 7px 16px; font-weight: 600; }
.menu { position: relative; }
.menu > summary { list-style: none; cursor: pointer; padding: 5px 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--control); font-size: 14px; font-weight: 500; }
.menu > summary::-webkit-details-marker { display: none; }
.menu > summary::after { content: "▾"; margin-left: 6px; color: var(--dim); }
.menu[open] > summary { border-color: var(--accent); }
.menu .presets { position: absolute; right: 0; top: calc(100% + 6px); z-index: 40; display: grid; gap: 8px; width: 300px; margin: 0; padding: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px rgba(0, 0, 0, .25); }
.menu .presets #preset-name { width: 100%; }
.preset-buttons { display: flex; gap: 6px; flex-wrap: wrap; }
.menu .presets .dim { margin: 0; }
.menu .presets .dim:empty { display: none; }

/* 안내 띠: 빨강은 진짜 오류에만 */
.info { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin: 0; padding: 10px 14px; border-radius: 8px; background: var(--info-bg); color: var(--text); }
.info[hidden] { display: none; }
.info::before { content: "i"; flex: none; width: 20px; height: 20px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; background: var(--accent); color: var(--on-accent); font-size: 12px; font-weight: 700; }
.info span { flex: 1; }
.info.paused-note { background: var(--warn-bg); }
.info.paused-note::before { content: "Ⅱ"; background: var(--amber); color: #202124; }

/* 모니터 */
.monitor { padding: 10px 10px 0; }
.monitor .board { margin: 0; border: 10px solid var(--bezel); border-bottom-width: 14px; border-radius: 12px; }
.monitor .board.drop { border-color: var(--accent); }
.monitor-stand { width: 18%; height: 18px; margin: 0 auto; background: var(--bezel); clip-path: polygon(30% 0, 70% 0, 82% 100%, 18% 100%); }
.monitor-stand::after { content: ""; display: block; }
.monitor + .tools, .monitor ~ .tools { margin-top: 20px; }
.board-item { background: color-mix(in srgb, var(--accent) 22%, var(--board-bg)); }
.board-item .thumb { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: #0b0d11; pointer-events: none; }
.board-item span { z-index: 1; padding: 1px 6px; border-radius: 4px; background: rgba(0, 0, 0, .6); color: #fff; }
.board-item .remove, .board-item .resize { z-index: 2; }

/* 접히는 옵션 */
.more { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 12px; }
.more > summary { cursor: pointer; color: var(--dim); font-size: 14px; }
.more[open] > summary { margin-bottom: 12px; color: var(--text); }

/* 차트 카드: 둥글기 8px, 끊긴 카드는 미리보기 위에 [다시 연결] */
.chart-card { position: relative; border-radius: 8px; }
.chart-card.cut .relink { position: absolute; left: 8px; top: 8px; width: calc(100% - 16px); aspect-ratio: 16 / 9; height: auto; margin: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; border: 1px dashed #9aa0a6; border-radius: 4px; background: rgba(15, 16, 17, .78); color: #fff; font-weight: 600; }
.chart-card.cut .relink::before { content: attr(data-cut); font-size: 12px; font-weight: 400; color: #c4c7c5; }
.chart-card.cut .relink:hover { border-color: #8ab4f8; background: rgba(15, 16, 17, .9); }
.chart-card .test-fire button { min-height: 24px; }
.board-item .thumb { background: none; }
.board-item span { max-width: calc(100% - 44px); overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 820px) {
  .menu { position: static; }
  .menu .presets { left: 12px; right: 12px; top: 100%; width: auto; }
}

/* 알림이 울린 차트 카드: 카드 전체가 [알림 확인] 버튼이 된다. 한 번 누르면 눌리는 모션 뒤 꺼진다 */
.chart-card .ack { display: none; }
.chart-card.alerting { border: 2px solid var(--red); box-shadow: 0 0 0 3px color-mix(in srgb, var(--red) 25%, transparent); }
.chart-card.alerting .ack { position: absolute; inset: 0; z-index: 3; display: flex; align-items: center; justify-content: center; overflow: hidden; padding: 0; border: 0; border-radius: inherit; background: color-mix(in srgb, var(--red) 10%, transparent); cursor: pointer; transition: transform .12s ease-out, background .12s; }
.chart-card.alerting .ack span { padding: 8px 18px; border-radius: 6px; background: var(--red); color: #fff; font-size: 14px; font-weight: 600; box-shadow: 0 2px 10px rgba(0, 0, 0, .3); }
.chart-card.alerting .ack:hover { background: color-mix(in srgb, var(--red) 18%, transparent); }
.chart-card.alerting .ack:active, .chart-card.alerting .ack.pressed { transform: scale(.97); }
.chart-card .ack.pressed::after { content: ""; position: absolute; left: var(--x); top: var(--y); width: 24px; height: 24px; margin: -12px 0 0 -12px; border-radius: 50%; background: color-mix(in srgb, var(--red) 45%, transparent); animation: ack-ripple .26s ease-out forwards; pointer-events: none; }
@keyframes ack-ripple { to { transform: scale(30); opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  .chart-card.alerting .ack { transition: none; }
  .chart-card .ack.pressed::after { animation: none; display: none; }
}
.chart-card.alerting .relink { visibility: hidden; }
.log-table th { white-space: nowrap; }

/* [+ 차트 추가]는 파랑, 추가 중인 [추가 끝내기]는 주황 테두리와 깜빡이는 점으로 구분한다 */
button.primary.armed { background: var(--surface); border: 2px solid var(--amber); color: var(--text); }
button.primary.armed:hover:not(:disabled) { background: color-mix(in srgb, var(--amber) 14%, var(--surface)); }
button.primary.armed::before { content: ""; display: inline-block; width: 8px; height: 8px; margin-right: 8px; border-radius: 50%; background: var(--amber); vertical-align: 1px; animation: armed-dot 1s ease-in-out infinite; }
@keyframes armed-dot { 50% { opacity: .25; } }
@media (prefers-reduced-motion: reduce) { button.primary.armed::before { animation: none; } }
.guide-next b { display: inline-block; min-width: 1.4em; margin-right: 2px; }

/* 버튼 색: 위쪽 [설정]에서 고른다. 기본 파랑은 맨 위 토큰 그대로이고, 나머지는 data-accent로 바꾼다 */
/* 청록 */
:root[data-accent="teal"], :root[data-accent="teal"] .topbar { --accent: #5fd4c4; --on-accent: #0b2b27; --accent-soft: rgba(95, 212, 196, .16); }
@media (prefers-color-scheme: light) { :root[data-accent="teal"]:not([data-theme="dark"]) { --accent: #00796b; --on-accent: #ffffff; --accent-soft: rgba(0, 121, 107, .1); } }
:root[data-accent="teal"][data-theme="light"] { --accent: #00796b; --on-accent: #ffffff; --accent-soft: rgba(0, 121, 107, .1); }
/* 보라 */
:root[data-accent="violet"], :root[data-accent="violet"] .topbar { --accent: #c58af9; --on-accent: #1f1033; --accent-soft: rgba(197, 138, 249, .16); }
@media (prefers-color-scheme: light) { :root[data-accent="violet"]:not([data-theme="dark"]) { --accent: #7b3fc4; --on-accent: #ffffff; --accent-soft: rgba(123, 63, 196, .1); } }
:root[data-accent="violet"][data-theme="light"] { --accent: #7b3fc4; --on-accent: #ffffff; --accent-soft: rgba(123, 63, 196, .1); }
/* 흑백 */
:root[data-accent="mono"], :root[data-accent="mono"] .topbar { --accent: #e8eaed; --on-accent: #111111; --accent-soft: rgba(232, 234, 237, .14); }
@media (prefers-color-scheme: light) { :root[data-accent="mono"]:not([data-theme="dark"]) { --accent: #202124; --on-accent: #ffffff; --accent-soft: rgba(32, 33, 36, .08); } }
:root[data-accent="mono"][data-theme="light"] { --accent: #202124; --on-accent: #ffffff; --accent-soft: rgba(32, 33, 36, .08); }

/* 위쪽 [설정] 메뉴: 화면 모드와 버튼 색 */
.menu .look { position: absolute; right: 0; top: calc(100% + 6px); z-index: 40; display: grid; gap: 8px; width: 280px; padding: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px rgba(0, 0, 0, .25); }
.menu .look .label { margin: 0; }
.menu .look .segmented { justify-self: start; }
.swatches { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
.swatches button { display: flex; align-items: center; gap: 8px; }
.swatches button i { width: 14px; height: 14px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .25); }
.swatches [data-accent="blue"] i { background: #8ab4f8; }
.swatches [data-accent="teal"] i { background: #5fd4c4; }
.swatches [data-accent="violet"] i { background: #c58af9; }
.swatches [data-accent="mono"] i { background: #e8eaed; }
.swatches button[aria-checked="true"] { border-color: var(--accent); background: var(--accent-soft); }
@media (max-width: 820px) { .menu .look { left: 12px; right: 12px; top: 100%; width: auto; } }

/* 위쪽 줄 오른쪽: [코너뷰 띄우기] | 로그인 (회원가입) | 앱 받기·새 소식·도움말·언어. 계정과 바로가기는 아직 기능 없음 */
.account { display: flex; align-items: center; gap: 4px; }
.topbar .text-btn { border-color: transparent; background: none; color: var(--text); padding: 5px 10px; }
.topbar .text-btn:hover:not(:disabled) { border-color: transparent; background: rgba(255, 255, 255, .08); }
.topbar .outline-pill { border: 1.5px solid var(--text); border-radius: 999px; background: none; color: var(--text); padding: 4px 14px; }
.topbar .outline-pill:hover:not(:disabled) { border-color: var(--text); background: rgba(255, 255, 255, .1); }
.bar-divider { width: 1px; height: 22px; background: #3a3a3a; }
.quick { display: flex; align-items: center; gap: 2px; }
.topbar .icon-btn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; padding: 0; border: 0; border-radius: 50%; background: none; color: var(--text); }
.topbar .icon-btn:hover:not(:disabled) { border: 0; background: rgba(255, 255, 255, .1); }
@media (max-width: 820px) { .bar-divider { display: none; } }
.bar-break { display: none; }
/* 폭이 1600px보다 좁으면 두 줄: 윗줄은 로고·로그인·바로가기, 아랫줄은 감시 상태와 조작 버튼 */
@media (max-width: 1600px) {
  .topbar { row-gap: 8px; }
  .topbar .brand { order: 0; }
  .topbar .spacer { order: 1; }
  .topbar .account { order: 2; }
  .topbar .bar-divider { order: 3; }
  .topbar .quick { order: 4; }
  .topbar .bar-break { display: block; order: 5; flex-basis: 100%; height: 0; }
  .topbar #status-pill { order: 6; }
  .topbar .record-box { margin-left: auto; }
  .topbar .record-box { order: 9; }
  .topbar #pip-start { order: 10; }
}

/* 가격 알림 창: 오른쪽에서 열리는 서랍. 위쪽 현황판 오른쪽 [가격 알림]으로 연다 */
.topbar .bar-btn { padding: 5px 12px; border: 1px solid var(--line); border-radius: 6px; background: var(--control); color: var(--text); font-size: 14px; }
.topbar .bar-btn.on { border-color: var(--accent); }
@media (max-width: 1600px) { .topbar #alert-open { order: 6; } }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; z-index: 50; width: min(440px, 100vw); overflow-y: auto; padding: 16px 20px 24px; background: var(--surface); border-left: 1px solid var(--line); box-shadow: -8px 0 24px rgba(0, 0, 0, .3); }
.drawer[hidden] { display: none; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 10px; }
.drawer-head h2 { margin: 0; display: flex; align-items: center; gap: 6px; }
.drawer .icon-btn { width: 32px; height: 32px; padding: 0; border: 0; border-radius: 50%; background: none; color: var(--dim); font-size: 20px; line-height: 1; }
.drawer .icon-btn:hover:not(:disabled) { background: var(--control); color: var(--text); }
.drawer #alerts-empty { margin: 12px 0 0; }

/* 차트 카드의 [알림 추가]와 그 아래 열리는 알림 추가 칸 */
.chart-card .alert-add { width: 100%; margin-top: 4px; }
.chart-card .alert-add.on { border-color: var(--accent); color: var(--accent); }
.alert-form { display: grid; gap: 6px; margin-top: 6px; padding: 8px; border: 1px solid var(--accent); border-radius: 6px; background: var(--surface); cursor: default; }
.alert-form[hidden] { display: none; }
.alert-form-row { display: flex; gap: 6px; }
.alert-form-row input { flex: 1; min-width: 0; }
.alert-form-row button { flex: 1; }
.alert-form .warn { margin: 0; font-size: 12px; }

/* 가운데 띄우기 옵션: 빠른 위치 아래 */
.popup-options { margin-top: 12px; }

/* 화면 배치도가 화면 높이를 넘지 않게 */
.col-board .monitor { max-width: max(480px, calc((100vh - 300px) * 16 / 9)); margin-inline: auto; }

/* 차트 카드의 알림 요약 한 줄: 알림 N | 단계 색 점 + 목표가(3개까지) +N. 누르면 가격 알림 창 */
.chart-card .alert-sum { display: flex; align-items: center; gap: 6px; width: 100%; margin-top: 4px; padding: 3px 6px; overflow: hidden; border: 0; border-radius: 4px; background: none; font-size: 12px; font-weight: 400; color: var(--text); white-space: nowrap; text-align: left; }
.chart-card .alert-sum[hidden] { display: none; }
.chart-card .alert-sum:hover:not(:disabled) { border: 0; background: var(--control); }
.alert-sum b { flex: none; color: var(--dim); font-weight: 500; }
.alert-sum .chips { display: flex; gap: 4px; flex: 1; min-width: 0; overflow: hidden; }
.alert-sum .chip { flex: none; display: inline-flex; align-items: center; gap: 4px; padding: 0 6px; border: 1px solid var(--line); border-radius: 999px; font-variant-numeric: tabular-nums; }
.alert-sum .chip i { flex: none; width: 7px; height: 7px; border-radius: 50%; }
.alert-sum .chip.off { opacity: .45; text-decoration: line-through; }
.alert-sum .chip.fired { border-color: var(--red); color: var(--red); }
.alert-sum .more-n { flex: none; color: var(--dim); }

/* 가격 알림 창: [수정] 줄과 두 영역 사이 간격 */
.drawer #alerts td button + button { margin-left: 4px; }
.drawer #alerts tr.editing td { vertical-align: top; }
.drawer .edit-row { display: flex; gap: 6px; }
.drawer .edit-row input { flex: 1; min-width: 0; padding: 3px 6px; font-size: 12px; }
.drawer .edit-row select { padding: 3px 6px; font-size: 12px; }
.drawer #alerts tr.editing .warn { margin: 4px 0 0; font-size: 12px; }
.drawer > section + section { margin-top: 32px; padding-top: 28px; }

/* 알림 기록: 시각·차트 칸은 작은 글자로 좁게 */
.log-table td:nth-child(-n+2) { font-size: 12px; white-space: nowrap; }
.log-table td:nth-child(2) { max-width: 120px; overflow: hidden; text-overflow: ellipsis; }

/* 톱니바퀴 [설정]: 오른쪽 위 아이콘 줄 끝. 화면 모드와 버튼 색 */
/* 전체 details의 위 여백(10px)을 빼야 다른 아이콘과 높이가 맞는다 */
.menu.gear { display: flex; margin: 0; }
.menu.gear > summary { display: flex; align-items: center; justify-content: center; padding: 0; border: 0; background: none; line-height: 0; }
.menu.gear > summary::after { content: none; }
.menu.gear[open] > summary { background: rgba(255, 255, 255, .14); }

/* 프리셋: 화면 배치도 제목 옆. 펼친 칸은 화면 배치도 칸 왼쪽에 맞춘다 */
.col-board .section-head { position: relative; }
.board-menu { position: static; margin: 0 0 0 6px; }
.board-menu > summary { padding: 2px 10px; font-size: 14px; }
.board-menu .presets { left: 0; right: auto; top: calc(100% + 6px); width: min(300px, calc(100vw - 24px)); font-size: 14px; font-weight: 400; }
@media (max-width: 820px) { .board-menu { position: static; } .board-menu .presets { left: 0; right: auto; top: calc(100% + 6px); width: min(300px, calc(100vw - 24px)); } }

/* 지구본 언어 메뉴: 언어 이름은 그 언어로 쓴다 */
.langs-panel { width: 200px; }
.lang-list { display: grid; gap: 4px; }
.lang-list button { text-align: left; }
.lang-list button[aria-checked="true"] { border-color: var(--accent); background: var(--accent-soft); }

/* 바닥 줄: 저작권 · 커뮤니티 · 개인정보 처리방침 · 요금제 · 도움말 · 문의 */
.site-footer { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 8px 24px; max-width: 1440px; margin: 24px auto 0; padding: 16px 24px 24px; border-top: 1px solid var(--line); color: var(--dim); font-size: 12px; }
.site-footer .copy { margin-right: auto; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-right: auto; }
.footer-links a { color: var(--dim); text-decoration: none; }
.footer-links a[href] { color: var(--text); font-weight: 600; }
.footer-links a[href]:hover { text-decoration: underline; }
.footer-links a[aria-disabled="true"] { cursor: default; }
@media (max-width: 820px) { .site-footer, .footer-links { justify-content: flex-start; } .footer-links { margin-right: 0; } }

/* 개인정보 처리방침 페이지 */
.legal-page { color: var(--text); }
.legal-top { position: sticky; top: 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 12px 24px; background: #111111; color: #f1f3f4; }
.legal-top .brand { display: flex; align-items: center; gap: 8px; color: #f1f3f4; text-decoration: none; font-size: 16px; }
.legal-langs { display: flex; flex-wrap: wrap; gap: 4px; }
.legal-langs button { background: #262626; border-color: #3a3a3a; color: #f1f3f4; padding: 4px 10px; font-size: 12px; }
.legal-langs button[aria-checked="true"] { border-color: var(--accent); }
.legal { max-width: 760px; margin: 0 auto; padding: 32px 24px 64px; line-height: 1.75; }
.legal[hidden] { display: none; }
.legal h1 { font-size: 22px; margin: 0 0 6px; }
.legal h2 { font-size: 16px; margin: 32px 0 8px; }
.legal p, .legal li { color: var(--text); }
.legal ul { padding-left: 20px; margin: 8px 0; }
.legal-meta { color: var(--dim) !important; font-size: 12px; margin: 0 0 20px; }
.legal-lead { padding: 12px 16px; border-radius: 8px; background: var(--info-bg); }
@media (max-width: 820px) { .legal-top { padding: 10px 16px; } .legal { padding: 24px 16px 48px; } }

/* 도움말 페이지: 왼쪽에 고정된 목차, 오른쪽에 40em 본문. 꾸밈은 줄이고 강조는 프리셋 팁 한 곳에만 둔다 */
.help-doc { display: grid; grid-template-columns: 168px minmax(0, 40em); column-gap: 56px; justify-content: center; max-width: none; padding: 48px 24px 96px; font-size: 15px; line-height: 1.8; }
.help-doc > * { grid-column: 2; }
.help-doc > .toc { grid-column: 1; grid-row: 1 / span 300; align-self: start; position: sticky; top: 80px; display: flex; flex-direction: column; margin: 0; padding-top: 8px; }
.help-doc .toc a { padding: 5px 0 5px 14px; border-left: 2px solid var(--line); color: var(--dim); font-size: 14px; text-decoration: none; }
.help-doc .toc a:hover { border-left-color: var(--accent); color: var(--text); }
.help-doc h1 { margin: 0 0 12px; font-size: 30px; line-height: 1.3; letter-spacing: -0.02em; }
.help-doc > .legal-meta { margin: 0 0 32px; color: var(--dim) !important; font-size: 16px; }
.help-doc h2 { margin: 64px 0 16px; font-size: 22px; line-height: 1.35; letter-spacing: -0.01em; scroll-margin-top: 80px; }
.help-doc h3 { margin: 28px 0 4px; font-size: 16px; }
.help-doc p { margin: 0 0 12px; }
.help-doc a { color: var(--accent); }
/* "먼저 확인하세요" 안내: 노란 띠 상자(이전 모양으로 되돌림) */
.help-doc .note { margin: 0 0 20px; padding: 10px 14px; border-left: 3px solid var(--amber); border-radius: 4px; background: var(--warn-bg); color: var(--text); }
.help-doc kbd { padding: 0 6px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; background: var(--surface); font: inherit; font-size: 13px; white-space: nowrap; }

/* 시작하기 3단계: 실제 순서라 번호를 크게 */
.help-doc > ol:first-of-type { counter-reset: step; list-style: none; margin: 0; padding: 0; }
.help-doc > ol:first-of-type > li { counter-increment: step; position: relative; margin: 0 0 18px; padding-left: 44px; }
.help-doc > ol:first-of-type > li::before { content: counter(step); position: absolute; left: 0; top: -2px; color: var(--accent); font-size: 26px; font-weight: 700; line-height: 1.2; font-variant-numeric: tabular-nums; }

/* 프리셋 팁: 이 페이지의 유일한 강조. 실제 프리셋 목록 모양을 그대로 보여 준다 */
.help-doc .tip-star { margin: 8px 0 32px; padding: 24px 28px 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.help-doc .tip-star h3 { margin: 0 0 8px; font-size: 18px; }
.preset-mock { display: grid; max-width: 340px; margin: 16px 0 8px; padding: 4px; border: 1px solid var(--line); border-radius: 6px; background: var(--control); font-size: 14px; line-height: 1.5; }
.preset-mock span { padding: 6px 10px; border-radius: 4px; }
.preset-mock span:first-child { background: var(--accent-soft); color: var(--accent); }
.help-doc .tips li { margin-bottom: 8px; }

/* 문제 해결: 증상을 누르면 펼쳐진다 */
.help-doc details.qa { margin: 0; border-top: 1px solid var(--line); font-size: 15px; }
.help-doc details.qa:last-of-type { border-bottom: 1px solid var(--line); }
.help-doc details.qa > summary { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 14px 0; color: var(--text); font-weight: 600; cursor: pointer; list-style: none; }
.help-doc details.qa > summary::-webkit-details-marker { display: none; }
.help-doc details.qa > summary::after { content: "+"; flex: none; color: var(--dim); font-size: 20px; font-weight: 400; line-height: 1; }
.help-doc details.qa[open] > summary::after { content: "−"; }
.help-doc details.qa > :not(summary) { margin-top: 0; }
.help-doc details.qa > :last-child { padding-bottom: 12px; }

/* 지원 범위: 이름과 값 */
.help-doc dl.limits { display: grid; grid-template-columns: max-content 1fr; gap: 8px 32px; margin: 16px 0 20px; }
.help-doc dl.limits dt { color: var(--dim); }
.help-doc dl.limits dd { margin: 0; font-variant-numeric: tabular-nums; }

@media (max-width: 900px) {
  .help-doc { grid-template-columns: minmax(0, 1fr); padding: 32px 16px 64px; }
  .help-doc > * { grid-column: 1; }
  .help-doc > .toc { grid-column: 1; grid-row: auto; position: static; flex-direction: row; flex-wrap: wrap; gap: 4px 16px; margin: 0 0 8px; padding: 0; }
  .help-doc .toc a { padding: 0; border: 0; }
  .help-doc > .toc { order: 0; }
  .help-doc h1 { font-size: 26px; }
  .help-doc .tip-star { padding: 20px 18px 8px; }
}
.footer-links a[href] { font-weight: 400; }
.footer-links a[href="privacy.html"] { font-weight: 600; }
.topbar a.icon-btn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; color: var(--text); }
.topbar a.icon-btn:hover { background: rgba(255, 255, 255, .1); }
.help-doc > .toc + h2 { margin-top: 16px; }

/* 도움말: 확장 설치 방법 펼쳐 보기와 단계별 그림 */
.help-doc details.howto { margin: 10px 0 4px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.help-doc details.howto > summary { padding: 8px 14px; color: var(--accent); font-weight: 600; cursor: pointer; }
.help-doc details.howto[open] > summary { border-bottom: 1px solid var(--line); }
.help-doc details.howto > p, .help-doc details.howto > ol { margin-left: 16px; margin-right: 16px; }
.help-doc details.howto > p:first-of-type { margin-top: 12px; color: var(--dim); }
.help-doc ol.shots { padding-left: 20px; }
.help-doc ol.shots > li { margin: 0 0 20px; }
.help-doc ol.shots p { margin: 0 0 8px; }
.help-doc a.shot { display: block; }
.help-doc a.shot img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 6px; }
.help-doc .howto-tail { margin-bottom: 14px !important; color: var(--dim); font-size: 14px; }

/* 처음 방문 인트로: 화면 전체를 덮고 가운데 [시작하기]만 둔다. 색은 화면 모드와 관계없이 어둡게 */
.intro { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; overflow: hidden; background: #0e1522; color: #f1f3f4; transition: opacity .42s ease, transform .42s ease; }
.intro[hidden] { display: none; }
.intro.leaving { opacity: 0; transform: scale(1.02); pointer-events: none; }
/* 흑백 차트 사진을 어둡게 깔고, 가운데 글자 뒤는 더 어둡게, 아래로 갈수록 진하게 덮어 글자를 읽기 쉽게 */
.intro-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 60% 40%; filter: grayscale(1) brightness(.62) contrast(1.08); }
.intro-shade { position: absolute; inset: 0; background: radial-gradient(ellipse 60% 55% at 50% 50%, rgba(8, 12, 19, .78), rgba(8, 12, 19, .35) 70%, rgba(8, 12, 19, .2)), linear-gradient(180deg, rgba(8, 12, 19, .15), rgba(8, 12, 19, .7)); }
.intro-body { position: relative; display: grid; justify-items: center; gap: 14px; max-width: 36em; padding: 24px; text-align: center; }
.intro-mark { color: #8ab4f8; margin-bottom: 4px; }
.intro-body h1 { margin: 0; font-size: 44px; font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; }
.intro-body p { word-break: keep-all; margin: 0 0 18px; color: #b8c2d3; font-size: 17px; line-height: 1.7; }
.intro-start { padding: 14px 44px; border: 0; border-radius: 8px; background: #f1f3f4; color: #0e1522; font-size: 17px; font-weight: 700; box-shadow: 0 8px 28px rgba(0, 0, 0, .45); }
.intro-start:hover:not(:disabled) { background: #ffffff; border: 0; }
.intro-start:focus-visible { outline: 3px solid #8ab4f8; outline-offset: 4px; }
body.intro-on { overflow: hidden; }
@media (max-width: 600px) { .intro-body h1 { font-size: 34px; } .intro-body p { font-size: 15px; } }
@media (prefers-reduced-motion: reduce) { .intro { transition: none; } }

/* 인트로 등장: 한 번만, 약 1.5초. 차트 사진이 천천히 가라앉듯 다가오고, 로고의 작은 네모가 구석으로 미끄러진 뒤
   제목이 왼쪽부터 드러나고 설명과 [시작하기]가 이어서 나타난다. 동작 줄이기 설정이면 처음부터 다 보인다 */
@media (prefers-reduced-motion: no-preference) {
  .intro-bg { animation: intro-photo 1.6s cubic-bezier(.2, .7, .2, 1) both; }
  .intro-mark { animation: intro-fade .5s ease-out .15s both; }
  .intro-dot { animation: intro-dot .65s cubic-bezier(.3, .8, .25, 1.15) .35s both; }
  .intro-body h1 { animation: intro-reveal .7s cubic-bezier(.3, .7, .2, 1) .65s both; }
  .intro-body p { animation: intro-rise .6s ease-out 1s both; }
  .intro-start { animation: intro-pop .5s cubic-bezier(.3, .8, .3, 1.2) 1.25s both; }
}
@keyframes intro-photo { from { opacity: 0; transform: scale(1.08); } to { opacity: 1; transform: scale(1); } }
@keyframes intro-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes intro-dot { from { transform: translate(-5.5px, -5.5px); } to { transform: none; } }
@keyframes intro-reveal { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes intro-rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes intro-pop { from { opacity: 0; transform: scale(.94); } to { opacity: 1; transform: none; } }

/* 배포용에서는 개발용 기능(녹화·인트로·일시정지·알림 시험 등)을 숨긴다. env.js가 내 PC에서만 html에 .dev를 붙인다 */
html:not(.dev) .dev-only { display: none !important; }