/* Shared geometry; each appearance controls palette, density and grouping. */
:root, [data-appearance="ink"] {
  --bg:#142126; --panel:#1b2b31; --field:#142329; --line:#354b53;
  --text:#edf1ed; --muted:#a8b9bd; --accent:#b6d0c0; --accent-ink:#14251f;
  --hover:#263b42; --subtle:#1a2a30; --radius:14px;
  --disc-ring:#263c43; --disc-edge:#4c636b; --disc-branch:#1e3239;
  --disc-core:#17282f; --disc-center:#20353d; --disc-line:#3b515c;
  --disc-selected:#b5d6ce; --disc-label:#d2dedf; --disc-trigram:#bccfd2;
  --wood:#80c9ab; --fire:#e49296; --earth:#d6bd8e; --metal:#e5c56c;
  --water:#83bedc; --prior:#83c6ce;
  color-scheme:dark;
}
[data-appearance="paper"] {
  --bg:#f5f6f3; --panel:#fff; --field:#fff; --line:#cdd5ce;
  --text:#26352f; --muted:#5a6c64; --accent:#285647; --accent-ink:#fff;
  --hover:#e6ece6; --subtle:#ecefea; --radius:10px;
  --disc-ring:#e2e8df; --disc-edge:#8e9f93; --disc-branch:#eef1e9;
  --disc-core:#f8f9f4; --disc-center:#e7eee5; --disc-line:#bbc8bb;
  --disc-selected:#436c5b; --disc-label:#3e5147; --disc-trigram:#52685c;
  --wood:#217651; --fire:#ae414f; --earth:#876224; --metal:#7a651b;
  --water:#246b98; --prior:#286e74;
  color-scheme:light;
}
[data-appearance="compact"] {
  --bg:#101316; --panel:#1a1e22; --field:#161b1f; --line:#3c444b;
  --text:#eeeede; --muted:#acb3b8; --accent:#d8caaa; --accent-ink:#211e18;
  --hover:#2a3035; --subtle:#191e23; --radius:7px;
  --disc-ring:#282e34; --disc-edge:#58636b; --disc-branch:#20272c;
  --disc-core:#151c21; --disc-center:#232d34; --disc-line:#3c4851;
  --disc-selected:#c6d3d9; --disc-label:#d3d9db; --disc-trigram:#bbc6cc;
  --wood:#86c3a7; --fire:#df929c; --earth:#d7bb8c; --metal:#ddc572;
  --water:#83b8d7; --prior:#80c3ca;
  color-scheme:dark;
}
html {background:var(--bg);color:var(--text)}
body {background:var(--bg);font-size:15px;letter-spacing:.015em}
button,input,textarea {border-radius:var(--radius)}
button {background:var(--panel);border-color:var(--line)}
button:hover {background:var(--hover)}
button.primary {background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}
button.primary:hover {background:color-mix(in srgb,var(--accent),var(--text) 10%)}
button:disabled {opacity:.55}
button.quiet {background:transparent;color:var(--muted)}
input,textarea {background:var(--field);border-color:var(--line)}
input::placeholder,textarea::placeholder {color:var(--muted);opacity:.8}
input:focus,textarea:focus {border-color:var(--accent)}
.shell {max-width:1000px;padding-inline:28px}
.header {min-height:76px;border-bottom:1px solid var(--line);gap:10px}
.brand {font-size:22px;gap:11px;letter-spacing:.15em;white-space:nowrap}
.brand-mark {width:28px;height:28px;color:var(--accent)}
.header-actions {display:flex;align-items:center;gap:7px}
.header button {display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 12px;min-height:44px;border-radius:10px}
.header .icon-button {width:44px;padding:10px;border-color:transparent;color:var(--muted)}
.header .nav-library {border-color:transparent;font-size:13px;white-space:nowrap}
.header .nav-library:hover,.header .icon-button:hover {background:var(--hover)}
.count {font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}
.intro {margin:38px 0 24px;display:flex;flex-direction:row;align-items:baseline;justify-content:space-between;gap:16px}
.intro h1 {font-size:32px;font-weight:500;letter-spacing:.08em}
.home-date {font-size:12px;color:var(--muted);white-space:nowrap}
.start-layout {grid-template-columns:minmax(0,1.25fr) minmax(240px,.8fr);gap:48px;min-height:380px;align-items:start;padding-bottom:32px}
.start-form {border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:22px}
.mode-picker {margin-bottom:24px;background:var(--bg);border:0;border-radius:10px;padding:4px;gap:2px}
.mode-picker button {min-height:44px;font-size:13px;border-radius:7px;letter-spacing:.015em}
.mode-picker button[aria-pressed="true"] {color:var(--text);background:var(--hover);box-shadow:none}
.field-label {font-size:12px;color:var(--muted);margin-bottom:9px}
.fields {grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:10px}
.fields input {padding:12px 10px;min-height:52px;border-radius:9px;font-variant-numeric:tabular-nums}
.form-heading {margin-bottom:7px}
.form-heading button {min-height:44px;color:var(--accent);padding:8px 0}
.time-note {margin-top:13px;font-size:11px;line-height:1.7}
.submit {min-height:50px;margin-top:26px;font-size:15px;letter-spacing:.1em;display:flex;align-items:center;justify-content:center;gap:12px}
.submit span {font-size:18px}
.error:empty {display:none}
.recent {border-top:0;padding-top:4px}
.recent h2 {font-size:13px;color:var(--text);margin-bottom:10px}
.recent>.row {min-height:42px}
.record-link {padding:17px 22px 17px 0;gap:6px;position:relative;min-height:80px}
.record-link::after {content:"";width:6px;height:6px;border-top:1px solid var(--muted);border-right:1px solid var(--muted);transform:rotate(45deg);position:absolute;right:3px;top:calc(50% - 4px)}
.record-link:hover {background:transparent}
.record-link:hover .record-title {color:var(--accent)}
.record-link .record-title {font-size:15px;font-weight:500;line-height:1.6}
.record-link .meta {font-size:11px}
.record-link .preview {font-size:12px}
.empty {padding:26px 0;font-size:13px;color:var(--muted)}
.footer {font-size:11px;border-color:var(--line);padding-top:12px;align-items:center}
.footer button {font-size:11px}
.chart-shell {max-width:520px;padding-inline:18px}
.chart-shell .header {min-height:60px;margin-top:0;margin-bottom:18px}
.chart-shell .back {margin-left:-8px;font-size:13px;padding-inline:6px;gap:3px}
.header-title {font-size:15px;font-weight:500;letter-spacing:.04em}
.chart-main {padding:0 0 104px;display:flex;flex-direction:column;gap:0}
.chart-overview {min-width:0}
.calendar {padding:0 2px 18px;color:var(--muted);font-size:11px;line-height:1.65}
.calendar-date {display:flex;align-items:baseline;gap:9px;margin-bottom:5px;flex-wrap:wrap}
.calendar-date time {display:flex;align-items:baseline;gap:10px;font-variant-numeric:tabular-nums;color:var(--text);font-size:14px;letter-spacing:.035em}
.calendar-date strong {font-weight:600;font-size:17px}
.calendar-zone {font-size:10px;color:var(--muted)}
.calendar-lunar {font-size:12px;color:var(--muted)}
.calendar-current {font-size:11px;margin-top:3px}
.calendar-terms {display:flex;gap:6px 18px;flex-wrap:wrap;margin-top:8px}
.calendar-term {display:inline-flex;gap:6px;white-space:nowrap;font-size:10.5px;font-variant-numeric:tabular-nums}
.calendar-term b {font-weight:400;color:var(--muted)}
.pillars {padding:10px 4px 8px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.chart-mode {font-size:10px;margin-bottom:4px;gap:7px;letter-spacing:.015em}
.chart-mode .mode-dot {width:4px;height:4px;background:var(--accent)}
.pillar-labels {font-size:10px;margin-bottom:2px;line-height:1.3}
.pillar-row {gap:4px}
.pillar-cell {padding:3px 0 0}
.pillar-cell .stem,.pillar-cell .zhi {font-size:24px;line-height:1.25;font-weight:500}
.pillar-cell .zhi.related {text-shadow:0 0 2px color-mix(in srgb,currentColor 45%,transparent);font-weight:600}
.pillar-cell .relation {top:36px;font-size:9px;left:calc(50% + 14px)}
.pillar-row+.pillar-row {padding-top:6px;margin-top:7px;border-color:var(--line)}
.chain {margin-top:4px;font-size:10px;min-height:0;line-height:1.4}
.chart-status {min-height:47px;padding:0 2px;gap:5px;font-size:10px;align-items:center}
.chart-status span {line-height:1.7;max-width:calc(100% - 65px)}
.chart-status button {min-height:44px;display:flex;align-items:center;gap:5px;white-space:nowrap;font-size:11px;padding:8px 0 8px 8px}
.chart-status svg {width:14px;height:14px}
.board-area {margin:0 -6px}
.disc {isolation:isolate}
.board-svg .ink {fill:var(--text)}
.board-svg .muted {fill:var(--muted)}
.board-svg .trigram {fill:var(--disc-trigram)}
.board-svg .palace {fill:var(--disc-label);font-weight:450}
.board-svg .yun {fill:var(--text);font-weight:650}
.board-svg .glow {filter:drop-shadow(0 0 .65px currentColor)}
.branch.ming:before {border-color:var(--water);background:color-mix(in srgb,var(--water) 12%,transparent)}
.branch em {color:var(--text);text-shadow:0 0 4px color-mix(in srgb,var(--text) 30%,transparent);font-weight:450}
.branch.selected>span {text-shadow:0 0 2px color-mix(in srgb,currentColor 65%,transparent)}
.ring-input [data-ring]:focus-visible {stroke:color-mix(in srgb,var(--water) 22%,transparent)}
.ring-tools {justify-content:space-between;gap:12px;margin:14px 2px 22px}
.rotate-stepper {display:flex;align-items:center;border:1px solid var(--line);border-radius:10px;background:var(--subtle)}
.ring-tools button {display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:11px;padding:8px 12px;min-height:44px;border-radius:10px}
.ring-tools .step {width:44px;min-width:44px;border:0;padding:8px;background:transparent}
.rotate-stepper span {width:52px;text-align:center;font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.ring-tools #compare {border-color:transparent;background:transparent}
.ring-tools #compare[aria-pressed="true"]:not(:disabled) {background:var(--hover);color:var(--text)}
.ring-tools #compare svg {width:17px;height:17px}
.chart-notes-column {min-width:0}
.details {padding:0 1px 16px;border:0;margin:0;gap:8px;font-size:12px}
.details .row {gap:9px}
.details strong {font-size:19px}
.details p {font-size:11px;line-height:1.8}
.editor {background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.editor .field-label {font-size:11px;margin-bottom:7px}
.editor input {min-height:34px;font-size:16px;font-weight:500;line-height:1.5}
.editor input,.editor textarea {padding:2px 0;background:transparent;border:0}
.editor textarea {min-height:100px;font-size:14px;line-height:1.9}
.editor label+label {margin-top:15px;padding-top:16px;border-color:var(--line)}
.save-bar {background:var(--bg);padding:10px 18px calc(10px + env(safe-area-inset-bottom));border-color:var(--line);backdrop-filter:none}
.save-bar>div {max-width:484px}
.save-bar button {min-height:48px;border-radius:11px;font-size:14px}
.save-bar button:disabled {opacity:1;background:var(--subtle);color:var(--muted);border-color:var(--line)}
.library-main {margin-top:32px;max-width:700px}
.library-main h1 {font-size:30px;font-weight:500}
.search input {min-height:48px;font-size:14px;border-color:var(--line);background:var(--field)}
.library-tools {gap:8px;margin-top:24px}
.library-tools button {font-size:12px;background:transparent;border-radius:9px}
.library-note {font-size:11px;line-height:1.9;max-width:480px}
dialog {background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:18px;padding:22px;width:calc(100vw - 40px);max-width:350px}
dialog h2 {font-size:18px}
dialog p {color:var(--muted);font-size:13px}
dialog .icon-button {width:44px;height:44px;min-height:44px;padding:0;font-size:24px;font-weight:300}
.appearance-options {display:flex;flex-direction:column;gap:8px;margin-top:18px}
.appearance-options button {display:flex;align-items:center;gap:13px;min-height:64px;padding:11px 14px;background:var(--field);border:1px solid var(--line);text-align:left;font-size:14px}
.appearance-options button[aria-pressed="true"] {border-color:var(--accent)}
.appearance-swatch {display:block;width:34px;height:34px;border-radius:9px;border:1px solid #ffffff26;position:relative}
.appearance-swatch::before,.appearance-swatch::after {content:"";position:absolute;border-radius:50%;border:1px solid;inset:5px}
.appearance-swatch::after {inset:10px}
.swatch-ink {background:#142126;color:#b6d0c0}
.swatch-paper {background:#f5f6f3;color:#285647;border-color:#cdd5ce}
.swatch-compact {background:#101316;color:#d8caaa}
.choice-mark {margin-left:auto;visibility:hidden;color:var(--accent)}
[aria-pressed="true"]>.choice-mark {visibility:visible}
#toast {background:var(--text);color:var(--bg);box-shadow:0 4px 22px #0002}
.update {text-align:center;padding:9px 18px;background:var(--panel);border-top:1px solid var(--line);color:var(--muted)}
.update button {min-height:36px}
[data-appearance="paper"] .start-form {box-shadow:0 8px 24px #26352f06}
[data-appearance="paper"] .mode-picker {background:#eef1ec}
[data-appearance="paper"] .mode-picker button[aria-pressed="true"] {background:#fff;box-shadow:0 1px 4px #26352f12}
[data-appearance="paper"] .pillars {border:1px solid var(--line);border-radius:10px;background:#fff;padding:10px 8px 8px}
[data-appearance="paper"] .board-svg .glow {filter:none}
[data-appearance="paper"] .branch.selected>span {text-shadow:none;font-weight:750}
[data-appearance="paper"] .branch.selected:after {content:"";position:absolute;bottom:5px;left:calc(50% - 2px);width:4px;height:4px;border-radius:50%;background:currentColor}
[data-appearance="paper"] .branch em {text-shadow:none}
[data-appearance="paper"] .editor {border-radius:0;background:transparent;border:0;border-top:1px solid var(--line);padding:18px 2px}
[data-appearance="paper"] .editor textarea {min-height:130px;background-image:repeating-linear-gradient(transparent,transparent 26px,var(--line) 26px,var(--line) 27px);line-height:27px;padding-top:1px;background-position:0 0;background-size:100% 27px}
[data-appearance="paper"] .save-bar {background:var(--bg)}
[data-appearance="paper"] .brand-mark {color:var(--accent)}
[data-appearance="compact"] .header {min-height:64px}
[data-appearance="compact"] .start-form {padding:18px;border-radius:7px;background:transparent}
[data-appearance="compact"] .intro h1 {font-family:inherit;font-weight:600;letter-spacing:.02em}
[data-appearance="compact"] .intro {margin-top:26px}
[data-appearance="compact"] .mode-picker {border-radius:6px;background:var(--subtle)}
[data-appearance="compact"] .mode-picker button {border-radius:4px}
[data-appearance="compact"] .brand {font-family:inherit;font-size:20px;letter-spacing:.1em}
[data-appearance="compact"] .brand .serif {font-family:inherit}
[data-appearance="compact"] .chart-shell .header {min-height:56px;margin-bottom:14px}
[data-appearance="compact"] .chart-overview {display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.3fr);gap:16px;align-items:start;padding-bottom:8px}
[data-appearance="compact"] .calendar {padding:2px 0 0}
[data-appearance="compact"] .calendar-date {gap:3px;margin-bottom:4px}
[data-appearance="compact"] .calendar-date time {font-size:11px;gap:5px;flex-wrap:wrap;line-height:1.5}
[data-appearance="compact"] .calendar-date strong {font-size:14px;font-weight:600}
[data-appearance="compact"] .calendar-zone {font-size:9px}
[data-appearance="compact"] .calendar-lunar {font-size:11px;line-height:1.7}
[data-appearance="compact"] .calendar-terms {gap:3px;margin-top:8px;flex-direction:column}
[data-appearance="compact"] .calendar-term {font-size:10px;gap:5px}
[data-appearance="compact"] .pillars {border:0;padding:0 0 4px}
[data-appearance="compact"] .chart-mode {font-size:9px;gap:4px;margin-bottom:8px;white-space:nowrap}
[data-appearance="compact"] .pillar-labels {font-size:9px}
[data-appearance="compact"] .pillar-cell .stem,[data-appearance="compact"] .pillar-cell .zhi {font-size:22px;line-height:1.3}
[data-appearance="compact"] .pillar-cell .relation {font-size:8px;left:calc(50% + 11px);top:32px}
[data-appearance="compact"] .chain {font-size:9px;line-height:1.5;justify-content:flex-end}
[data-appearance="compact"] .chart-status {min-height:44px;border-top:1px solid var(--line)}
[data-appearance="compact"] .ring-tools {margin-top:13px;margin-bottom:16px}
[data-appearance="compact"] .editor {background:transparent;border:0;border-top:1px solid var(--line);border-radius:0;padding:18px 2px}
[data-appearance="compact"] .editor label+label {border:0;padding-top:8px;margin-top:9px}
[data-appearance="compact"] .save-bar button {border-radius:6px}
@media(min-width:700px) and (max-width:1099px) {
  .chart-shell {max-width:560px;padding-inline:26px}
  .chart-main {padding-inline:0}
  .board-area {margin-inline:0}
}
@media(min-width:1100px) {
  .chart-shell {max-width:1312px;padding-inline:40px}
  .chart-shell .header {min-height:80px;margin-bottom:34px}
  .chart-shell .header-title {margin-right:auto;margin-left:30px;font-size:17px}
  .chart-main {display:grid;grid-template-columns:210px minmax(380px,480px) minmax(235px,1fr);gap:28px;align-items:start;padding-bottom:42px}
  .chart-overview {position:sticky;top:28px}
  .calendar {padding-bottom:24px}
  .calendar-date {gap:8px}
  .calendar-date time {font-size:14px;gap:8px}
  .calendar-date strong {font-size:20px}
  .calendar-zone {width:100%;font-size:10px}
  .calendar-lunar {font-size:12px;line-height:1.9}
  .calendar-terms {flex-direction:column;gap:7px;margin-top:15px}
  .calendar-term {font-size:11px;gap:8px}
  .pillars {padding:18px 2px}
  .pillar-cell .stem,.pillar-cell .zhi {font-size:24px;line-height:1.6}
  .pillar-cell .relation {top:46px;left:calc(50% + 11px);font-size:8px}
  .chain {font-size:9px;line-height:1.7;margin-top:13px}
  .chart-status {margin-top:-10px;min-height:44px}
  .chart-status span {font-size:11px}
  .board-area {margin:0 -3px}
  .ring-tools {margin-inline:3px;margin-top:20px}
  .details {min-height:82px;padding-bottom:18px}
  .details .row {flex-wrap:wrap;gap:6px}
  .editor {padding:19px}
  .editor textarea {min-height:220px;font-size:13px;line-height:1.9}
  .save-bar {position:static;border:0;padding:15px 0 0;background:transparent}
  .save-bar button {font-size:13px}
  [data-appearance="paper"] .chart-main {grid-template-columns:210px minmax(380px,490px) minmax(235px,1fr);gap:34px}
  [data-appearance="paper"] .calendar {padding-bottom:24px}
  [data-appearance="paper"] .pillars {padding:20px 8px}
  [data-appearance="compact"] .chart-shell .header {min-height:68px;margin-bottom:28px}
  [data-appearance="compact"] .chart-overview {display:block;padding-top:10px}
  [data-appearance="compact"] .calendar-date time {font-size:14px}
  [data-appearance="compact"] .calendar-date strong {font-size:19px}
  [data-appearance="compact"] .calendar-lunar {font-size:12px}
  [data-appearance="compact"] .calendar-term {font-size:11px}
  [data-appearance="compact"] .pillars {border-top:1px solid var(--line);padding-top:22px;margin-top:20px}
  [data-appearance="compact"] .pillar-cell .stem,[data-appearance="compact"] .pillar-cell .zhi {font-size:24px}
  [data-appearance="compact"] .chart-status {border:0}
}
@media(max-width:699px) {
  .shell {padding-inline:20px}
  .header {min-height:68px}
  .brand {font-size:20px;gap:9px}
  .brand-mark {width:26px;height:26px}
  .header-actions {gap:1px}
  .header .nav-library {padding-inline:8px}
  .intro {margin:30px 0 21px}
  .intro h1 {font-size:29px}
  .home-date {font-size:11px}
  .start-layout {grid-template-columns:minmax(0,1fr);gap:28px;min-height:0;padding-bottom:24px}
  .start-form {padding:18px;border-radius:14px}
  .recent {padding-top:0}
  .recent h2 {font-size:13px}
  .footer {padding-bottom:18px}
  .chart-shell {padding-inline:18px}
  .chart-shell .header {min-height:56px;margin-bottom:16px}
  .chart-main {padding-inline:0}
  .chart-status span {font-size:10px}
  .ring-tools {gap:8px}
  .ring-tools button {font-size:11px}
  .chart-notes-column .editor {padding:16px}
  [data-appearance="paper"] .chart-notes-column .editor,[data-appearance="compact"] .chart-notes-column .editor {padding:17px 2px}
  [data-appearance="paper"] .intro h1 {font-size:31px}
}
@media(max-width:350px) {
  .shell {padding-inline:15px}
  .brand {font-size:18px;gap:8px}
  .brand-mark {width:24px;height:24px}
  .header .nav-library {font-size:12px;padding-inline:5px;gap:4px}
  .header .icon-button {width:40px;padding:8px}
  .chart-shell {padding-inline:12px}
  .chart-shell .header-title {font-size:13px}
  .chart-shell .back {font-size:12px}
  .start-form {padding:14px}
  .fields {gap:8px}
  .fields input {font-size:15px;padding:12px 8px}
  .calendar-date time {font-size:13px}
  .calendar-terms {gap:5px 13px}
  .calendar-term {font-size:9.5px}
  .pillar-cell .stem,.pillar-cell .zhi {font-size:22px}
  .ring-tools button {padding-inline:7px;font-size:10px}
  .rotate-stepper span {width:40px}
  .branch {font-size:19px}
  [data-appearance="compact"] .chart-overview {gap:10px;grid-template-columns:minmax(0,1fr)}
  [data-appearance="compact"] .calendar-date time {font-size:13px}
  [data-appearance="compact"] .calendar-date strong {font-size:16px}
  [data-appearance="compact"] .calendar-lunar {font-size:11px}
  [data-appearance="compact"] .calendar-terms {flex-direction:row;gap:5px 12px}
  [data-appearance="compact"] .calendar-term {font-size:9.5px}
  [data-appearance="compact"] .chart-mode {font-size:10px}
  [data-appearance="compact"] .pillar-cell .stem,[data-appearance="compact"] .pillar-cell .zhi {font-size:22px}
}
.chart-status button {min-width:58px}
.chart-status button span {max-width:none}
.header .icon-button {min-width:44px}