:root {
  --bg: #111015;
  --bg-elevated: #19171d;
  --panel: #211e25;
  --panel-2: #29252d;
  --panel-3: #312c35;
  --line: rgba(255,255,255,.08);
  --line-strong: rgba(255,255,255,.14);
  --text: #f5f2f7;
  --muted: #aaa2af;
  --text-muted: var(--muted);
  --subtle: #77717c;
  --cyan: #67d7e7;
  --accent: #67d7e7;
  --accent-soft: color-mix(in srgb, var(--accent) 12%, transparent);
  --on-accent: #102124;
  --danger: #ff7a8b;
  --purple: #a79afc;
  --green: #5ed3a1;
  --orange: #f2a65a;
  --pink: #df718a;
  --red: #ff7a8b;
  --radius: 16px;
  --radius-sm: 11px;
  --shadow: 0 14px 38px rgba(0,0,0,.18);
  --bg-glow: rgba(111,80,121,.15);
  --nav-bg: rgba(24,22,28,.94);
  --topbar-bg: rgba(17,16,21,.86);
  --sidebar-bg: rgba(20,18,23,.92);
  --card-bg: linear-gradient(180deg, rgba(39,35,43,.98), rgba(31,29,35,.98));
  --course-bg: linear-gradient(135deg, rgba(76,57,83,.65), rgba(45,38,50,.95));
  --course-border: rgba(167,154,252,.20);
  --course-text: #eee7ff;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color-scheme: dark;
}

/* Phase 5.11 · 12 themes: 6 light + 6 dark */
/* Light 1 · Paper / 纸页 */
html[data-theme="paper"] {
  color-scheme: light;
  --bg: #F4F0E8;
  --bg-elevated: #ECE5D7;
  --panel: #F9F3E7;
  --panel-2: #F1EADC;
  --panel-3: #E8DEC8;
  --card-bg: linear-gradient(180deg, #FFFDF8, #F8F1E4);
  --line: rgba(60,50,35,.10);
  --line-strong: rgba(60,50,35,.18);
  --text: #2C2B26;
  --muted: #6D695E;
  --subtle: #989283;
  --cyan: #3C7D78;
  --accent: #3C7D78;
  --on-accent: #F7FCFA;
  --danger: #B23A45;
  --purple: #7A6096;
  --green: #3E7A58;
  --orange: #A26745;
  --pink: #B06178;
  --red: #C0454F;
  --bg-glow: rgba(60,125,120,.10);
  --nav-bg: rgba(250,246,238,.92);
  --topbar-bg: rgba(250,247,241,.88);
  --sidebar-bg: rgba(248,243,234,.94);
  --course-bg: linear-gradient(135deg, rgba(60,125,120,.10), rgba(244,240,232,.96));
  --course-border: rgba(60,125,120,.28);
  --course-text: #2B4A47;
  --shadow: 0 14px 38px rgba(80,70,50,.12);
}
/* Light 2 · Mist / 晨雾 */
html[data-theme="mist"] {
  color-scheme: light;
  --bg: #EEF2F3;
  --bg-elevated: #E3EAEC;
  --panel: #F6FAFA;
  --panel-2: #E9F0F1;
  --panel-3: #DCE6E8;
  --card-bg: linear-gradient(180deg, #FAFCFC, #EFF5F5);
  --line: rgba(30,55,65,.10);
  --line-strong: rgba(30,55,65,.17);
  --text: #243033;
  --muted: #5C6B6E;
  --subtle: #87969A;
  --cyan: #287D8E;
  --accent: #287D8E;
  --on-accent: #F2FAFC;
  --danger: #B23A48;
  --purple: #7A6B9E;
  --green: #3E7A70;
  --orange: #B07A4A;
  --pink: #B06A7E;
  --red: #C04A52;
  --bg-glow: rgba(40,125,142,.10);
  --nav-bg: rgba(246,250,250,.92);
  --topbar-bg: rgba(247,251,251,.88);
  --sidebar-bg: rgba(243,248,248,.94);
  --course-bg: linear-gradient(135deg, rgba(40,125,142,.12), rgba(238,242,243,.96));
  --course-border: rgba(40,125,142,.28);
  --course-text: #24505C;
  --shadow: 0 14px 38px rgba(40,70,80,.12);
}
/* Light 3 · Sage / 鼠尾草 */
html[data-theme="sage"] {
  color-scheme: light;
  --bg: #EDF1E8;
  --bg-elevated: #E2E9DD;
  --panel: #F5F8F1;
  --panel-2: #E8EEE1;
  --panel-3: #DBE4D2;
  --card-bg: linear-gradient(180deg, #F8FAF5, #EEF3E9);
  --line: rgba(40,60,45,.10);
  --line-strong: rgba(40,60,45,.17);
  --text: #27302A;
  --muted: #5E6B61;
  --subtle: #89968C;
  --cyan: #557A63;
  --accent: #557A63;
  --on-accent: #F4FAF6;
  --danger: #A8463E;
  --purple: #7A7A60;
  --green: #3F7A55;
  --orange: #9E7A45;
  --pink: #AE7A68;
  --red: #B8504A;
  --bg-glow: rgba(85,122,99,.10);
  --nav-bg: rgba(245,248,241,.92);
  --topbar-bg: rgba(246,249,243,.88);
  --sidebar-bg: rgba(242,246,238,.94);
  --course-bg: linear-gradient(135deg, rgba(85,122,99,.12), rgba(237,241,232,.96));
  --course-border: rgba(85,122,99,.28);
  --course-text: #2E4A37;
  --shadow: 0 14px 38px rgba(60,80,60,.12);
}
/* Light 4 · Sky / 晴空 */
html[data-theme="sky"] {
  color-scheme: light;
  --bg: #EAF2F8;
  --bg-elevated: #DFEBF3;
  --panel: #F3F8FB;
  --panel-2: #E5EFF6;
  --panel-3: #D6E6F0;
  --card-bg: linear-gradient(180deg, #F7FBFE, #EAF3F9);
  --line: rgba(25,60,85,.10);
  --line-strong: rgba(25,60,85,.17);
  --text: #233038;
  --muted: #5A6B76;
  --subtle: #8597A3;
  --cyan: #347FA3;
  --accent: #347FA3;
  --on-accent: #F2F9FD;
  --danger: #B23A4C;
  --purple: #6E6BA8;
  --green: #3E7A6E;
  --orange: #B07A48;
  --pink: #B06A86;
  --red: #C04A5C;
  --bg-glow: rgba(52,127,163,.10);
  --nav-bg: rgba(243,248,251,.92);
  --topbar-bg: rgba(244,249,252,.88);
  --sidebar-bg: rgba(240,246,250,.94);
  --course-bg: linear-gradient(135deg, rgba(52,127,163,.12), rgba(234,242,248,.96));
  --course-border: rgba(52,127,163,.28);
  --course-text: #1F4E66;
  --shadow: 0 14px 38px rgba(40,80,105,.12);
}
/* Light 5 · Sand / 沙岩 */
html[data-theme="sand"] {
  color-scheme: light;
  --bg: #F1E8DA;
  --bg-elevated: #E8DCC9;
  --panel: #F8F2E7;
  --panel-2: #EFE4D3;
  --panel-3: #E4D6BE;
  --card-bg: linear-gradient(180deg, #FBF7F0, #F3EBDE);
  --line: rgba(70,55,35,.11);
  --line-strong: rgba(70,55,35,.18);
  --text: #33302A;
  --muted: #736B5E;
  --subtle: #A19786;
  --cyan: #A26745;
  --accent: #A26745;
  --on-accent: #FDF8F1;
  --danger: #B23A34;
  --purple: #8A6B5E;
  --green: #6E7A4A;
  --orange: #B0783A;
  --pink: #B06A60;
  --red: #B84A44;
  --bg-glow: rgba(162,103,69,.10);
  --nav-bg: rgba(249,244,236,.92);
  --topbar-bg: rgba(250,246,239,.88);
  --sidebar-bg: rgba(247,242,233,.94);
  --course-bg: linear-gradient(135deg, rgba(162,103,69,.12), rgba(241,232,218,.96));
  --course-border: rgba(162,103,69,.28);
  --course-text: #6E4328;
  --shadow: 0 14px 38px rgba(110,85,55,.13);
}
/* Light 6 · Lavender / 淡紫 */
html[data-theme="lavender"] {
  color-scheme: light;
  --bg: #EFEAF4;
  --bg-elevated: #E5DCEF;
  --panel: #F7F4FA;
  --panel-2: #EAE3F2;
  --panel-3: #DCD1E8;
  --card-bg: linear-gradient(180deg, #FBF8FD, #F1EBF7);
  --line: rgba(50,35,70,.10);
  --line-strong: rgba(50,35,70,.17);
  --text: #2D2933;
  --muted: #6C6576;
  --subtle: #968D9F;
  --cyan: #7A6096;
  --accent: #7A6096;
  --on-accent: #F8F5FC;
  --danger: #A83E52;
  --purple: #7A6096;
  --green: #4E7A5E;
  --orange: #A2745A;
  --pink: #A85E78;
  --red: #B84A5E;
  --bg-glow: rgba(122,96,150,.10);
  --nav-bg: rgba(247,244,250,.92);
  --topbar-bg: rgba(248,245,251,.88);
  --sidebar-bg: rgba(244,240,249,.94);
  --course-bg: linear-gradient(135deg, rgba(122,96,150,.12), rgba(239,234,244,.96));
  --course-border: rgba(122,96,150,.28);
  --course-text: #4C3A5E;
  --shadow: 0 14px 38px rgba(90,70,120,.12);
}
/* Dark 1 · Night / 深夜黑（默认） */
html[data-theme="night"] {
  --bg: #111015;
  --bg-elevated: #19171d;
  --panel: #211e25;
  --panel-2: #29252d;
  --panel-3: #312c35;
  --line: rgba(255,255,255,.08);
  --line-strong: rgba(255,255,255,.14);
  --text: #f5f2f7;
  --muted: #aaa2af;
  --subtle: #77717c;
  --cyan: #67d7e7;
  --accent: #67d7e7;
  --on-accent: #102124;
  --danger: #ff7a8b;
  --purple: #a79afc;
  --green: #5ed3a1;
  --orange: #f2a65a;
  --pink: #df718a;
  --red: #ff7a8b;
  --bg-glow: rgba(111,80,121,.15);
  --nav-bg: rgba(24,22,28,.94);
  --topbar-bg: rgba(17,16,21,.86);
  --sidebar-bg: rgba(20,18,23,.92);
  --card-bg: linear-gradient(180deg, rgba(39,35,43,.98), rgba(31,29,35,.98));
  --course-bg: linear-gradient(135deg, rgba(76,57,83,.65), rgba(45,38,50,.95));
  --course-border: rgba(167,154,252,.20);
  --course-text: #eee7ff;
  --shadow: 0 14px 38px rgba(0,0,0,.18);
}
/* Dark 2 · Midnight / 午夜蓝 */
html[data-theme="midnight"] {
  --bg: #08111C;
  --bg-elevated: #0D1826;
  --panel: #111E2B;
  --panel-2: #16263A;
  --panel-3: #1C2F47;
  --line: rgba(120,170,255,.13);
  --line-strong: rgba(120,170,255,.22);
  --text: #E8F2FA;
  --muted: #9FB3C4;
  --subtle: #6E8398;
  --cyan: #4DBFD3;
  --accent: #4DBFD3;
  --on-accent: #0B1A24;
  --danger: #FF8796;
  --purple: #9A93E8;
  --green: #55C2A0;
  --orange: #F0B273;
  --pink: #E08BA8;
  --red: #FF8796;
  --bg-glow: rgba(70,140,220,.16);
  --nav-bg: rgba(9,18,30,.95);
  --topbar-bg: rgba(9,18,30,.88);
  --sidebar-bg: rgba(9,18,30,.94);
  --card-bg: linear-gradient(180deg, rgba(23,38,59,.98), rgba(17,30,45,.98));
  --course-bg: linear-gradient(135deg, rgba(50,100,160,.55), rgba(13,26,44,.95));
  --course-border: rgba(77,191,211,.22);
  --course-text: #DFF1FF;
  --shadow: 0 14px 38px rgba(0,0,0,.38);
}
/* Dark 3 · Forest / 深林 */
html[data-theme="forest"] {
  --bg: #0D1511;
  --bg-elevated: #111D16;
  --panel: #17221B;
  --panel-2: #1E2D23;
  --panel-3: #26382C;
  --line: rgba(150,255,200,.10);
  --line-strong: rgba(150,255,200,.17);
  --text: #EAF3ED;
  --muted: #A3B8AB;
  --subtle: #728A7B;
  --cyan: #63B58B;
  --accent: #63B58B;
  --on-accent: #0E1D15;
  --danger: #FF8B93;
  --purple: #A29BE0;
  --green: #5ED3A1;
  --orange: #E8B06E;
  --pink: #E08A96;
  --red: #FF8B93;
  --bg-glow: rgba(70,180,130,.12);
  --nav-bg: rgba(12,21,16,.95);
  --topbar-bg: rgba(12,21,16,.88);
  --sidebar-bg: rgba(12,21,16,.94);
  --card-bg: linear-gradient(180deg, rgba(29,45,35,.98), rgba(21,33,25,.98));
  --course-bg: linear-gradient(135deg, rgba(50,140,95,.50), rgba(15,28,20,.95));
  --course-border: rgba(99,181,139,.22);
  --course-text: #DFF6E9;
  --shadow: 0 14px 38px rgba(0,0,0,.32);
}
/* Dark 4 · Wine / 酒红 */
html[data-theme="wine"] {
  --bg: #180D12;
  --bg-elevated: #200F16;
  --panel: #27151C;
  --panel-2: #301B24;
  --panel-3: #3A222D;
  --line: rgba(255,180,200,.10);
  --line-strong: rgba(255,180,200,.17);
  --text: #F7E9EC;
  --muted: #C4A8B0;
  --subtle: #93747E;
  --cyan: #C47C91;
  --accent: #C47C91;
  --on-accent: #2A1017;
  --danger: #FF8B9A;
  --purple: #B79BE0;
  --green: #6BC49A;
  --orange: #E8B07A;
  --pink: #D97E9C;
  --red: #FF8B9A;
  --bg-glow: rgba(160,60,90,.14);
  --nav-bg: rgba(24,13,18,.95);
  --topbar-bg: rgba(24,13,18,.88);
  --sidebar-bg: rgba(24,13,18,.94);
  --card-bg: linear-gradient(180deg, rgba(48,27,36,.98), rgba(37,21,28,.98));
  --course-bg: linear-gradient(135deg, rgba(150,70,100,.50), rgba(35,18,26,.95));
  --course-border: rgba(196,124,145,.24);
  --course-text: #FBE8ED;
  --shadow: 0 14px 38px rgba(0,0,0,.36);
}
/* Dark 5 · Indigo / 靛青 */
html[data-theme="indigo"] {
  --bg: #111020;
  --bg-elevated: #171530;
  --panel: #1D1B31;
  --panel-2: #252245;
  --panel-3: #2E2A58;
  --line: rgba(170,160,255,.12);
  --line-strong: rgba(170,160,255,.20);
  --text: #EDEBF8;
  --muted: #B0AACB;
  --subtle: #7C759E;
  --cyan: #8C86D9;
  --accent: #8C86D9;
  --on-accent: #17132E;
  --danger: #FF8B9E;
  --purple: #8C86D9;
  --green: #64C6A2;
  --orange: #EDB57E;
  --pink: #E18BA8;
  --red: #FF8B9E;
  --bg-glow: rgba(120,110,230,.15);
  --nav-bg: rgba(17,16,32,.95);
  --topbar-bg: rgba(17,16,32,.88);
  --sidebar-bg: rgba(17,16,32,.94);
  --card-bg: linear-gradient(180deg, rgba(35,33,64,.98), rgba(27,25,49,.98));
  --course-bg: linear-gradient(135deg, rgba(90,80,180,.50), rgba(22,20,40,.95));
  --course-border: rgba(140,134,217,.24);
  --course-text: #E9E6FF;
  --shadow: 0 14px 38px rgba(0,0,0,.40);
}
/* Dark 6 · Coffee / 咖啡 */
html[data-theme="coffee"] {
  --bg: #17110D;
  --bg-elevated: #1E1611;
  --panel: #261C16;
  --panel-2: #2F231B;
  --panel-3: #392B21;
  --line: rgba(255,210,170,.10);
  --line-strong: rgba(255,210,170,.17);
  --text: #F6EDE4;
  --muted: #C3AE9C;
  --subtle: #927C68;
  --cyan: #C99563;
  --accent: #C99563;
  --on-accent: #231409;
  --danger: #FF8B8B;
  --purple: #B39BCB;
  --green: #6DBD8F;
  --orange: #E3A96F;
  --pink: #D98A93;
  --red: #FF8B8B;
  --bg-glow: rgba(180,110,60,.13);
  --nav-bg: rgba(23,17,13,.95);
  --topbar-bg: rgba(23,17,13,.88);
  --sidebar-bg: rgba(23,17,13,.94);
  --card-bg: linear-gradient(180deg, rgba(45,34,26,.98), rgba(36,27,21,.98));
  --course-bg: linear-gradient(135deg, rgba(140,90,55,.50), rgba(32,23,18,.95));
  --course-border: rgba(201,149,99,.24);
  --course-text: #F9EFE4;
  --shadow: 0 14px 38px rgba(0,0,0,.34);
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body { margin: 0; background: radial-gradient(circle at 90% 0%, var(--bg-glow), transparent 35%), var(--bg); color: var(--text); }
button, input, select { font: inherit; }
button { color: inherit; }

.app-shell { min-height: 100vh; }
.desktop-sidebar { display: none; }
.main-column { min-width: 0; padding-bottom: calc(86px + var(--safe-bottom)); }

.topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between;
  min-height: 74px; padding: 12px 16px;
  background: var(--topbar-bg); backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}
.topbar h1 { margin: 1px 0 0; font-size: 22px; line-height: 1.2; }
.eyebrow { font-size: 12px; color: var(--cyan); letter-spacing: .06em; }
.topbar-actions { display: flex; gap: 8px; align-items: center; }
.icon-button { width: 40px; height: 40px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); cursor: pointer; }
.date-pill { display: none; padding: 9px 12px; border: 1px solid var(--line); background: var(--panel); border-radius: 12px; color: var(--muted); font-size: 13px; }

.page-root { width: 100%; max-width: 1460px; margin: 0 auto; padding: 14px 14px 26px; }
.stack { display: grid; gap: 14px; }
.grid { display: grid; gap: 12px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  overflow: hidden;
}
.card-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 14px 10px; }
.card-title { display: flex; gap: 8px; align-items: center; font-size: 15px; font-weight: 700; }
.card-subtitle { color: var(--muted); font-size: 12px; }
.card-body { padding: 4px 14px 14px; }
.section-kicker { color: var(--cyan); font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.section-heading { margin: 3px 0 0; font-size: 20px; }

.hero-card { padding: 16px; background: linear-gradient(135deg, var(--accent-soft), var(--panel)); }
.hero-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.hero-date { font-size: 28px; font-weight: 800; letter-spacing: -.03em; }
.hero-meta { color: var(--muted); font-size: 13px; margin-top: 3px; }
.week-badge { white-space: nowrap; padding: 7px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent); font-size: 12px; }
.hero-stats { margin-top: 16px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.stat { padding: 11px; border-radius: 12px; background: rgba(0,0,0,.14); border: 1px solid var(--line); }
.stat strong { display: block; font-size: 18px; }
.stat span { color: var(--muted); font-size: 11px; }

.list { display: grid; gap: 8px; }
.empty-state { min-height: 100px; display: grid; place-items: center; text-align: center; color: var(--subtle); padding: 20px; border: 1px dashed var(--line-strong); border-radius: 12px; }
.empty-state strong { color: var(--muted); display: block; margin-bottom: 4px; }

.task-row { display: grid; grid-template-columns: 24px minmax(0,1fr) auto; gap: 10px; align-items: flex-start; padding: 11px 8px; border-bottom: 1px solid var(--line); }
.task-row:last-child { border-bottom: 0; }
.task-check { width: 19px; height: 19px; border-radius: 6px; border: 1.5px solid #776f7e; margin-top: 1px; display: grid; place-items: center; color: var(--green); font-size: 12px; }
.task-row.done .task-check { border-color: rgba(94,211,161,.55); background: rgba(94,211,161,.08); }
.task-row.done .task-title { color: var(--subtle); text-decoration: line-through; }
.task-title { font-size: 14px; line-height: 1.45; overflow-wrap: anywhere; }
.task-meta { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 4px; color: var(--muted); font-size: 11px; }
.task-time { color: var(--cyan); font-size: 11px; padding-top: 2px; white-space: nowrap; }
.chip { display: inline-flex; align-items: center; min-height: 22px; padding: 2px 7px; border-radius: 999px; border: 1px solid var(--line); background: var(--panel-2); color: var(--muted); font-size: 11px; }
.chip.green { color: var(--green); border-color: color-mix(in srgb, var(--green) 22%, transparent); background: color-mix(in srgb, var(--green) 7%, transparent); }
.chip.orange { color: var(--orange); border-color: color-mix(in srgb, var(--orange) 22%, transparent); background: color-mix(in srgb, var(--orange) 7%, transparent); }
.chip.purple { color: var(--purple); border-color: color-mix(in srgb, var(--purple) 22%, transparent); background: color-mix(in srgb, var(--purple) 7%, transparent); }

.project-card { padding: 14px; }
.project-top { display: flex; gap: 12px; align-items: flex-start; justify-content: space-between; }
.project-name { font-size: 16px; font-weight: 800; color: var(--cyan); }
.project-desc { color: var(--muted); font-size: 12px; line-height: 1.5; margin: 5px 0 11px; }
.project-status { color: var(--green); font-size: 11px; white-space: nowrap; }
.progress-track { height: 7px; background: var(--panel-2); border-radius: 999px; overflow: hidden; }
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--cyan), var(--green)); border-radius: inherit; min-width: 2px; }
.project-metrics { display: flex; justify-content: space-between; margin-top: 7px; color: var(--muted); font-size: 11px; }
.subproject-grid { display: grid; grid-template-columns: 1fr; gap: 8px; margin-top: 12px; }
.subproject { padding: 11px; border-radius: 12px; background: var(--bg-elevated); border: 1px solid var(--line); }
.subproject-name { font-size: 13px; font-weight: 700; }
.subproject-tasks { margin-top: 8px; display: grid; gap: 6px; }
.mini-task { font-size: 12px; color: var(--muted); display: flex; gap: 7px; }
.mini-task::before { content: "□"; color: var(--subtle); }
.project-center .subproject-grid { grid-template-columns: 1fr; }
.project-center-card .project-card { padding-bottom: 16px; }
.project-task-scroll {
  display: block;
  max-height: min(420px, 55vh);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--accent) 55%, transparent) var(--panel-2);
  border-top: 1px solid var(--line);
}
.project-task-scroll::-webkit-scrollbar { width: 9px; }
.project-task-scroll::-webkit-scrollbar-track { background: var(--panel-2); border-radius: 999px; }
.project-task-scroll::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--accent) 48%, transparent); border: 2px solid transparent; background-clip: padding-box; border-radius: 999px; }
.project-task-scroll .task-row { padding: 10px 5px; }
.project-empty { min-height: 58px; display: grid; place-items: center; color: var(--subtle); font-size: 12px; }

.segmented { display: inline-flex; padding: 3px; gap: 2px; background: rgba(0,0,0,.18); border: 1px solid var(--line); border-radius: 10px; }
.segmented button { border: 0; background: transparent; color: var(--muted); padding: 7px 10px; border-radius: 8px; cursor: pointer; font-size: 12px; }
.segmented button.active { background: var(--panel-3); color: var(--text); }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; align-items: center; }
.toolbar-group { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

.course-day-tabs { display: flex; gap: 6px; overflow-x: auto; padding: 3px 0 10px; scrollbar-width: none; }
.course-day-tabs::-webkit-scrollbar { display: none; }
.day-tab { flex: 0 0 auto; border: 1px solid var(--line); background: var(--panel); color: var(--muted); border-radius: 10px; padding: 8px 11px; cursor: pointer; }
.day-tab.active { border-color: color-mix(in srgb, var(--accent) 40%, transparent); background: var(--accent-soft); color: var(--accent); }

.course-mobile { display: grid; gap: 8px; }
.period-row { display: grid; grid-template-columns: 67px minmax(0,1fr); gap: 8px; min-height: 68px; }
.period-label { display: flex; flex-direction: column; justify-content: center; padding: 9px 7px; text-align: center; border-radius: 10px; background: rgba(0,0,0,.14); border: 1px solid var(--line); }
.period-label strong { font-size: 12px; color: var(--cyan); }
.period-label span { font-size: 10px; color: var(--subtle); margin-top: 3px; }
.period-content { display: flex; align-items: stretch; }
.free-slot, .course-slot { flex: 1; border-radius: 10px; min-height: 68px; padding: 10px; border: 1px solid var(--line); }
.free-slot { display: grid; place-items: center; color: var(--subtle); background: rgba(0,0,0,.10); font-size: 12px; }
.course-slot { background: var(--course-bg); border-color: var(--course-border); }
.course-name { font-size: 13px; font-weight: 800; color: var(--course-text); }
.course-meta { margin-top: 5px; display: flex; flex-wrap: wrap; gap: 6px; color: var(--muted); font-size: 10px; }

.course-week-wrap { display: none; overflow-x: auto; overscroll-behavior-x: contain; padding-bottom: 10px; }
.course-week { min-width: 1020px; display: grid; grid-template-columns: 90px repeat(7, minmax(125px,1fr)); gap: 5px; }
.week-head { min-height: 42px; display: grid; place-items: center; color: var(--muted); font-size: 12px; font-weight: 700; border-bottom: 1px solid var(--line); }
.week-head.today { color: var(--cyan); }
.week-period { padding: 8px 5px; text-align: center; min-height: 64px; border-radius: 8px; background: rgba(0,0,0,.14); border: 1px solid var(--line); }
.week-period strong { display:block; font-size: 11px; color: var(--cyan); }
.week-period span { font-size: 9px; color: var(--subtle); }
.week-cell { min-height: 64px; border-radius: 8px; border: 1px solid var(--line); background: rgba(0,0,0,.10); padding: 7px; display: grid; align-content: center; }
.week-cell.free { color: var(--subtle); place-items: center; font-size: 11px; }
.week-cell.course { background: var(--course-bg); border-color: var(--course-border); }
.week-cell .course-name { font-size: 11px; }
.week-cell .course-meta { font-size: 9px; }

.filter-row { display: flex; gap: 7px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: none; }
.filter-row::-webkit-scrollbar { display:none; }
.filter-button { flex: 0 0 auto; padding: 8px 11px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); color: var(--muted); cursor:pointer; font-size: 12px; }
.filter-button.active { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 32%, transparent); background: var(--accent-soft); }

.review-placeholder { padding: 28px 18px; text-align: center; }
.review-icon { width: 56px; height: 56px; display: grid; place-items:center; margin: 0 auto 12px; border-radius: 16px; background: rgba(167,154,252,.09); border: 1px solid rgba(167,154,252,.15); font-size: 24px; }
.review-placeholder h3 { margin: 0 0 7px; }
.review-placeholder p { margin: 0 auto; max-width: 520px; color: var(--muted); font-size: 13px; line-height: 1.6; }

.quick-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 8px; }
.quick-card { border: 1px solid var(--line); background: rgba(0,0,0,.10); border-radius: 12px; padding: 13px; }
.quick-card strong { display:block; font-size: 13px; }
.quick-card span { color:var(--muted); font-size:10px; display:block; margin-top:4px; overflow-wrap:anywhere; }

.bottom-nav {
  position: fixed; z-index: 50; left: 0; right: 0; bottom: 0;
  display: grid; grid-template-columns: repeat(5,1fr);
  min-height: calc(66px + var(--safe-bottom)); padding: 6px 7px var(--safe-bottom);
  background: var(--nav-bg); backdrop-filter: blur(20px); border-top: 1px solid var(--line);
}
.nav-button { min-width: 0; border: 0; background: transparent; color: var(--muted); padding: 6px 2px; border-radius: 11px; cursor: pointer; display: grid; gap: 2px; place-items: center; }
.nav-button.active { color: var(--accent); background: var(--accent-soft); }
.nav-icon { font-size: 18px; line-height:1; }
.nav-label { font-size: 10px; white-space: nowrap; }
.nav-button.add { position: relative; top: -15px; }
.nav-button.add .nav-icon { width: 46px; height: 46px; display:grid; place-items:center; border-radius: 15px; background: linear-gradient(145deg, #56c7d9, #716be5); color:white; box-shadow: 0 9px 25px rgba(76,126,199,.28); font-size:24px; }
.nav-button.add .nav-label { opacity:.9; }

.toast { position: fixed; z-index: 90; left: 50%; bottom: calc(86px + var(--safe-bottom)); transform: translate(-50%, 18px); opacity: 0; pointer-events: none; background: var(--panel-3); color: var(--text); border: 1px solid var(--line-strong); padding: 10px 13px; border-radius: 11px; font-size: 12px; transition: .2s ease; box-shadow: var(--shadow); display: flex; align-items: center; gap: 8px; max-width: min(92vw, 420px); }
.toast.show { opacity: 1; transform: translate(-50%,0); pointer-events: auto; }
.toast-text { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.toast-close, .toast-action { flex: 0 0 auto; min-width: 32px; min-height: 32px; border: 0; border-radius: 9px; cursor: pointer; font-weight: 800; font-size: 13px; display: grid; place-items: center; padding: 0 10px; }
.toast-close { background: transparent; color: var(--muted); }
.toast-action { background: var(--accent); color: var(--on-accent); }
.toast-success { border-color: rgba(94,211,161,.45); }
.toast-error { border-color: rgba(255,122,139,.55); }
.toast-warning { border-color: rgba(242,166,90,.55); }
.toast-info { border-color: var(--line-strong); }

.skeleton { animation: pulse 1.3s infinite; background: linear-gradient(90deg, var(--panel-2), var(--panel-3), var(--panel-2)); background-size: 200% 100%; border-radius: 10px; min-height: 76px; }
@keyframes pulse { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

@media (min-width: 700px) {
  .page-root { padding: 18px 20px 32px; }
  .date-pill { display:block; }
  .grid-2 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .grid-3 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .subproject-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .quick-grid { grid-template-columns: repeat(4,1fr); }
}

@media (min-width: 1020px) {
  .app-shell { display:grid; grid-template-columns: 240px minmax(0,1fr); }
  .desktop-sidebar { position: sticky; top:0; height:100vh; display:flex; flex-direction:column; padding:18px 14px; border-right:1px solid var(--line); background: var(--sidebar-bg); }
  .brand { display:flex; gap:11px; align-items:center; padding:4px 7px 18px; }
  .brand-mark { width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:linear-gradient(145deg,#6ccedc,#776de5);font-weight:900; }
  .brand-title { font-weight:800; }
  .brand-subtitle { color:var(--subtle);font-size:10px;margin-top:2px; }
  .side-nav { display:grid; gap:5px; }
  .side-nav .nav-button { display:flex; flex-direction:row; justify-content:flex-start; gap:10px; padding:10px 11px; }
  .side-nav .nav-label { font-size:13px; }
  .side-nav .nav-icon { font-size:17px; width:20px; text-align:center; }
  .side-nav .nav-button.add { top:0; }
  .side-nav .nav-button.add .nav-icon { width:20px;height:auto;background:none;box-shadow:none;font-size:17px;color:inherit; }
  .sync-card { margin-top:auto; display:flex; align-items:center; gap:9px; padding:11px; border-radius:12px; background:rgba(0,0,0,.13); border:1px solid var(--line); }
  .status-dot { width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(94,211,161,.08); }
  .sync-card strong { display:block;font-size:12px; }
  .sync-card small { color:var(--subtle);font-size:10px; }
  .main-column { padding-bottom:0; }
  .topbar { padding:13px 24px; min-height:76px; }
  .page-root { padding:20px 24px 44px; }
  .bottom-nav { display:none; }
  .grid-3 { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .course-mobile, .course-day-tabs { display:none; }
  .course-week-wrap { display:block; }
}

@media (min-width: 1320px) {
  .app-shell { grid-template-columns: 255px minmax(0,1fr); }
  .dashboard-layout { display:grid; grid-template-columns: minmax(0,1.55fr) minmax(330px,.75fr); gap:14px; align-items:start; }
  .dashboard-main, .dashboard-side { display:grid; gap:14px; }
  .subproject-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior:auto !important; animation:none !important; transition:none !important; }
}

/* Phase 2: mobile-first app navigation and course timetable */
.course-phone-head { display:flex; align-items:center; justify-content:space-between; gap:10px; padding:4px 2px 2px; }
.course-week-title { min-width:0; display:grid; gap:2px; }
.course-week-title strong { font-size:24px; letter-spacing:.02em; }
.course-week-title span { color:var(--muted); font-size:11px; white-space:nowrap; }
.course-head-actions { display:flex; align-items:center; gap:2px; position:relative; }
.course-icon-button { width:42px; height:42px; border:0; border-radius:12px; background:transparent; color:var(--text); font-size:20px; cursor:pointer; }
.course-icon-button:active { background:var(--accent-soft); }
.course-date-picker { position:absolute; width:1px; height:1px; opacity:0; pointer-events:none; right:44px; top:42px; }
.course-mobile-panel { min-width:0; }
.course-day-tabs.app-style { display:grid; grid-template-columns:repeat(7,minmax(54px,1fr)); gap:3px; overflow-x:auto; padding:6px 0 12px; }
.course-day-tabs.app-style .day-tab { min-width:54px; padding:8px 4px; border:0; background:transparent; display:grid; gap:3px; text-align:center; }
.course-day-tabs.app-style .day-tab strong { font-size:12px; color:var(--text); }
.course-day-tabs.app-style .day-tab span { font-size:10px; color:var(--subtle); }
.course-day-tabs.app-style .day-tab.active { background:var(--panel-2); box-shadow:inset 0 -2px 0 var(--cyan); }
.course-mobile { border-top:1px solid var(--line); }
.period-row { min-height:78px; grid-template-columns:72px minmax(0,1fr); gap:7px; border-bottom:1px solid var(--line); }
.period-label { border:0; border-radius:0; background:transparent; padding:9px 6px; }
.period-label strong { font-size:25px; color:var(--text); line-height:1; }
.period-label span { font-size:11px; line-height:1.55; }
.free-slot, .course-slot { min-height:70px; margin:4px 0; }
.free-slot { background:transparent; border-style:dashed; }
.course-slot { display:flex; flex-direction:column; justify-content:center; }
.course-desktop-panel { display:none; }
.course-more-sheet[hidden] { display:none; }
.course-more-sheet { position:fixed; z-index:85; inset:0; background:rgba(0,0,0,.48); display:flex; align-items:flex-end; padding:16px 12px calc(84px + var(--safe-bottom)); }
.sheet-card { width:100%; border:1px solid var(--line-strong); border-radius:18px; background:var(--panel-2); overflow:hidden; box-shadow:var(--shadow); }
.sheet-title { padding:14px 16px 10px; font-weight:800; }
.sheet-row { width:100%; min-height:48px; display:flex; align-items:center; justify-content:space-between; border:0; border-top:1px solid var(--line); background:transparent; color:var(--text); padding:0 16px; text-align:left; }
.sheet-row.active { color:var(--cyan); }
.action-card { cursor:pointer; }

/* Phase 5.11 More page: version card, grouped theme picker, feature status */
.version-card { text-align:center; padding: 22px 16px; background: linear-gradient(160deg, var(--panel-2), var(--panel)); border: 1px solid var(--line-strong); }
.version-card .version-kicker { font-size: 10px; letter-spacing: .22em; color: var(--cyan); font-weight: 800; }
.version-card .version-main { font-size: 34px; font-weight: 900; margin: 8px 0 4px; color: var(--text); letter-spacing: .02em; }
.version-card .version-sub { font-size: 13px; color: var(--muted); }
.theme-group { display: grid; gap: 6px; }
.theme-group + .theme-group { margin-top: 10px; }
.theme-group-title { font-size: 11px; font-weight: 800; color: var(--muted); letter-spacing: .04em; padding: 0 2px; }
.theme-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 8px; }
.theme-button { border: 1px solid var(--line-strong); background: var(--panel); border-radius: 12px; padding: 10px 6px; text-align:center; cursor:pointer; color: var(--text); display: grid; gap: 5px; place-items: center; min-height: 86px; }
.theme-swatches { display: flex; gap: 4px; }
.theme-swatches i { width: 15px; height: 15px; border-radius: 50%; border: 1px solid var(--line-strong); display: block; }
.theme-button strong { font-size: 12px; }
.theme-button span { font-size: 10px; color: var(--muted); }
.theme-button.active { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; background: var(--accent-soft); }
.theme-button.active strong { color: var(--accent); }
.theme-note { margin-top: 8px; font-size: 10px; color: var(--subtle); line-height: 1.5; }
.feature-status .task-row { padding: 8px 0; }

/* Phase 2 bottom navigation: all five slots are destinations, no raised + button */
.bottom-nav .nav-button.add { top:0; }
.bottom-nav .nav-button.add .nav-icon { width:auto;height:auto;background:none;box-shadow:none;font-size:18px;color:inherit; }

@media (max-width: 699px) {
  .topbar { min-height:62px; padding-top:calc(8px + var(--safe-top)); }
  .page-root { padding-top:10px; }
  .course-page { gap:4px; }
  .course-page ~ * { min-width:0; }
  body { overscroll-behavior-y:contain; }
}

@media (min-width: 700px) and (max-width: 1019px) {
  .course-phone-head { padding:8px 4px; }
  .course-day-tabs.app-style .day-tab { min-width:72px; }
}

@media (min-width: 1020px) {
  .course-phone-head, .course-mobile-panel, .course-more-sheet { display:none !important; }
  .course-desktop-panel { display:block; }
  .course-week-wrap { display:block; }
  .week-head { grid-template-rows:auto auto; gap:2px; }
  .week-head strong { font-size:12px; }
  .week-head span { font-size:9px; color:var(--subtle); }
}

/* Phase 2.2: unmistakable mobile timetable controls */
.course-phone-actions{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px;margin-top:8px;}
.course-icon-button.labeled{min-height:48px;padding:5px 2px;display:grid;place-items:center;gap:2px;border:1px solid var(--line-strong);background:var(--panel);}
.course-icon-button.labeled span{font-size:16px;line-height:1;}
.course-icon-button.labeled small{font-size:9px;color:var(--muted);line-height:1;}
.course-icon-button.labeled:active{transform:translateY(1px);background:var(--accent-soft);}
.bottom-nav{border-top:1px solid var(--line-strong);backdrop-filter:blur(16px);}
.bottom-nav .nav-button.active{background:var(--accent-soft);}
@media(min-width:900px){.course-phone-actions{display:none;}}


/* Phase 2.4: mobile week timetable with usable proportions and a visible draggable scrollbar */
@media (max-width: 899px) {
  .course-mobile-panel { display:block; min-width:0; }
  .course-day-tabs.app-style, .course-mobile { display:none !important; }
  .course-scroll-hint, .course-scroll-note { color:var(--muted); font-size:11px; line-height:1.35; }
  .course-scroll-hint { padding:2px 2px 8px; }
  .course-scroll-note { padding:6px 2px 0; color:var(--subtle); }

  .course-week-wrap.mobile-week-scroll {
    display:block;
    width:100%;
    overflow-x:scroll;
    overflow-y:visible;
    overscroll-behavior-x:contain;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:auto;
    scrollbar-color:var(--accent) var(--panel-2);
    padding-bottom:12px;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .course-week-wrap.mobile-week-scroll::-webkit-scrollbar { height:12px; }
  .course-week-wrap.mobile-week-scroll::-webkit-scrollbar-track { background:var(--panel-2); border-radius:999px; }
  .course-week-wrap.mobile-week-scroll::-webkit-scrollbar-thumb { background:var(--accent); border:3px solid color-mix(in srgb, var(--bg) 82%, transparent); border-radius:999px; }

  .mobile-week-grid.course-week {
    min-width:724px;
    width:max-content;
    grid-template-columns:58px repeat(7, 92px);
    gap:4px;
    padding-top:4px;
  }
  .mobile-week-grid .week-head {
    min-height:48px;
    position:sticky;
    top:0;
    z-index:4;
    background:var(--bg-elevated);
    border-bottom:1px solid var(--line-strong);
  }
  .mobile-week-grid .week-head:first-child {
    position:sticky;
    left:0;
    z-index:7;
    background:var(--bg-elevated);
  }
  .mobile-week-grid .week-period {
    position:sticky;
    left:0;
    z-index:5;
    min-height:68px;
    padding:6px 3px;
    background:var(--bg-elevated);
    border-radius:8px;
    box-shadow:3px 0 0 color-mix(in srgb, var(--bg) 75%, transparent);
  }
  .mobile-week-grid .week-period strong { font-size:12px; }
  .mobile-week-grid .week-period span { display:block; margin-top:3px; font-size:8.5px; line-height:1.35; }
  .mobile-week-grid .week-cell { min-height:68px; padding:6px; }
  .mobile-week-grid .week-cell .course-name { font-size:10.5px; line-height:1.25; }
  .mobile-week-grid .week-cell .course-meta { font-size:8.5px; line-height:1.2; }
  .mobile-week-grid .week-cell.free { font-size:10px; }

  .task-check.preview-action { appearance:none; background:transparent; padding:0; cursor:pointer; }
  .inline-edit { border:0; background:transparent; color:var(--accent); font-size:11px; padding:0 3px; cursor:pointer; }
}


/* Phase 2.4 edit-affordance preview and explicit mobile scroll control */
.project-actions { display:flex; align-items:center; gap:8px; }
.inline-edit { border:1px solid var(--line); background:var(--panel-2); color:var(--accent); border-radius:8px; padding:4px 7px; font-size:10px; cursor:pointer; }
.task-check.preview-action { cursor:pointer; background:transparent; }
.course-scroll-slider {
  width:100%;
  margin:8px 0 0;
  accent-color:var(--accent);
  min-height:28px;
  cursor:pointer;
}
.course-scroll-slider:disabled { opacity:.35; }
@media (max-width: 899px) {
  .course-scroll-slider { display:block; }
}
@media (min-width: 900px) {
  .course-scroll-slider { display:none; }
}


/* Phase 4.2 editable ToDo */
.card-inline-actions{display:flex;align-items:center;gap:10px;justify-content:space-between;margin-bottom:10px;flex-wrap:wrap}
.primary-small,.primary-button,.secondary-button,.danger-button,.modal-close{font:inherit;cursor:pointer}
.primary-small{border:0;border-radius:11px;padding:9px 12px;background:var(--accent);color:var(--on-accent);font-weight:700}
.task-toggle{cursor:pointer}
.task-row.done .task-title{text-decoration:line-through;opacity:.58}
.task-row.done .task-meta,.task-row.done .task-time{opacity:.5}
.task-modal{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:18px}
.task-modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.62)}
.task-modal-card{position:relative;z-index:1;width:min(100%,520px);background:var(--panel-2);border:1px solid var(--line-strong);border-radius:20px;padding:20px;display:grid;gap:15px;color:var(--text);max-height:calc(100vh - 36px);overflow:auto}
.task-modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.task-modal-head h2{margin:3px 0 0;font-size:22px}
.modal-close{width:44px;height:44px;border:1px solid var(--line-strong);border-radius:12px;background:var(--panel);color:var(--muted);font-size:26px;line-height:1}
.field-label{display:grid;gap:7px;font-size:13px;color:var(--muted)}
.field-input{width:100%;min-height:46px;border:1px solid var(--line-strong);border-radius:12px;background:var(--bg);color:var(--text);padding:10px 12px;font-size:16px;outline:none}
.field-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.field-readonly{display:grid;gap:6px;border:1px solid var(--line);border-radius:12px;background:var(--bg-elevated);padding:11px 12px}
.field-readonly span{font-size:12px;color:var(--muted)}
.field-readonly strong{font-size:14px;color:var(--text);line-height:1.45}
.task-modal-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:4px}
.right-actions{display:flex;gap:9px;margin-left:auto}
.primary-button,.secondary-button,.danger-button{min-height:44px;border-radius:11px;padding:0 15px;font-weight:700}
.primary-button{border:0;background:var(--accent);color:var(--on-accent)}
.secondary-button{border:1px solid var(--line-strong);background:var(--panel);color:var(--text)}
.danger-button{border:1px solid color-mix(in srgb, var(--danger) 45%, transparent);background:color-mix(in srgb, var(--danger) 14%, transparent);color:var(--danger)}
.form-note{font-size:12px;line-height:1.5;color:var(--muted)}
@media (max-width: 767px){
  .task-modal{align-items:end;padding:0}
  .task-modal-card{width:100%;border-radius:20px 20px 0 0;border-bottom:0;padding:18px 16px calc(18px + env(safe-area-inset-bottom));max-height:88vh}
  .task-modal-actions{position:sticky;bottom:0;background:var(--panel-2);padding-top:8px}
}

/* Phase 4.4.1: project-task creation */
.project-center .project-actions{flex-wrap:wrap;justify-content:flex-end}
.project-task-new{white-space:nowrap}
@media (max-width: 560px){
  .project-center .subproject .project-top{align-items:stretch}
  .project-center .subproject .project-actions{flex-direction:column;align-items:flex-end}
  .project-task-new{padding:8px 10px;font-size:13px}
}

/* Phase 4.4.2: explicit no-date option */
.date-choice{display:grid;gap:10px}
.no-date-toggle{display:grid;grid-template-columns:auto 1fr;column-gap:10px;row-gap:2px;align-items:center;padding:10px 12px;border:1px solid var(--line);border-radius:12px;cursor:pointer}
.no-date-toggle input{width:18px;height:18px;grid-row:1 / span 2}
.no-date-toggle span{font-weight:700}
.no-date-toggle small{color:var(--muted);line-height:1.4}

/* Phase 4.4.5: robust project task create entry */
.project-task-new-main{display:inline-flex!important;align-items:center;justify-content:center;visibility:visible!important;opacity:1!important;min-width:104px}
.project-center-card>.project-card>.project-top>.project-actions{display:flex!important;flex-wrap:wrap;gap:8px;align-items:center;justify-content:flex-end}
@media (max-width:560px){
  .project-center-card>.project-card>.project-top{align-items:flex-start}
  .project-center-card>.project-card>.project-top>.project-actions{flex-direction:column;align-items:flex-end}
}

/* Phase 4.5 Schedule */
.schedule-row{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;padding:14px 0;border-bottom:1px solid var(--line)}
.schedule-row:last-child{border-bottom:0}
.schedule-row.done .task-title{text-decoration:line-through;opacity:.62}
.schedule-main{min-width:0}
.schedule-notes{margin-top:8px;color:var(--muted);font-size:13px;line-height:1.55;white-space:pre-wrap}
.schedule-time-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.schedule-textarea{min-height:96px;padding:12px 14px;resize:vertical}
@media (max-width:560px){.schedule-time-grid{grid-template-columns:1fr}}


/* Phase 5.6 — Project Center mobile hierarchy */
.project-center-card .project-card{padding:13px 14px 14px}
.project-summary-row,.subproject-summary{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.project-disclosure{appearance:none;border:0;background:transparent;color:inherit;padding:0;margin:0;min-width:0;text-align:left;display:flex;align-items:flex-start;gap:9px;cursor:pointer;flex:1}
.disclosure-icon{width:18px;min-width:18px;height:18px;display:grid;place-items:center;color:var(--muted);font-size:20px;line-height:1;margin-top:-1px}
.disclosure-copy{display:grid;min-width:0;gap:2px}
.project-summary-row .project-desc{margin:2px 0 0}
.project-center-card:not(.is-open) .project-desc{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.project-center-card .project-actions{flex-shrink:0}
.subproject-grid{margin-top:11px}
.subproject{padding:10px 11px}
.subproject.is-open{background:rgba(0,0,0,.16)}
.subproject-summary{align-items:center}
.subproject-actions{display:flex;align-items:center;gap:7px;flex-shrink:0}
.project-task-add-icon{width:30px;height:30px;border:1px solid color-mix(in srgb, var(--accent) 28%, transparent);border-radius:9px;background:var(--accent-soft);color:var(--accent);font-size:18px;line-height:1;display:grid;place-items:center;cursor:pointer}
.project-task-add-icon:active{transform:translateY(1px)}
.subproject-tasks{margin-top:8px;border-top:1px solid var(--line);display:block}
.subproject-tasks .task-row{padding:10px 4px}
.project-task-scroll{max-height:none!important;overflow:visible!important;overscroll-behavior:auto!important;scrollbar-width:auto!important;border-top:0!important}
.project-task-scroll::-webkit-scrollbar{display:none!important}
.project-empty.compact{min-height:46px}
.project-completed{margin-top:7px;border-top:1px dashed var(--line);padding-top:7px}
.project-completed>summary{cursor:pointer;color:var(--muted);font-size:11px;list-style:none;padding:3px 2px}
.project-completed>summary::-webkit-details-marker{display:none}
.project-completed>summary::before{content:"›";display:inline-block;margin-right:6px;transition:transform .15s ease}
.project-completed[open]>summary::before{transform:rotate(90deg)}
.project-completed-list{margin-top:4px}
.sync-status-grid{display:grid;gap:8px}
.sync-status-card strong{font-size:13px}
.sync-status-card.warning{border-color:rgba(255,184,77,.38)}
@media (max-width:560px){
  .project-center-card>.project-card>.project-summary-row{align-items:flex-start}
  .project-center-card>.project-card>.project-summary-row>.project-actions{flex-direction:column;align-items:flex-end;gap:6px}
  .project-task-new-main{min-width:0!important;padding:7px 9px!important;font-size:12px!important}
  .subproject .project-actions{flex-direction:row!important}
  .subproject-name{font-size:13px}
}


/* Phase 5.7 — Today / ToDo mobile UX */
.task-copy{min-width:0}
.task-row.overdue{background:rgba(255,120,100,.045)}
.chip.danger{color:var(--danger);border-color:color-mix(in srgb, var(--danger) 28%, transparent);background:color-mix(in srgb, var(--danger) 9%, transparent)}
.task-check.static{cursor:default}
.today-task-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:7px}
.completed-fold{margin-top:8px;border-top:1px dashed var(--line);padding-top:7px}
.completed-fold>summary{cursor:pointer;list-style:none;color:var(--muted);font-size:12px;padding:5px 2px}
.completed-fold>summary::-webkit-details-marker{display:none}
.completed-fold>summary::before{content:"›";display:inline-block;margin-right:7px;transition:transform .15s ease}
.completed-fold[open]>summary::before{transform:rotate(90deg)}
.completed-fold-list{margin-top:4px}
.task-group-card.task-group-warning{border-color:rgba(255,120,100,.18)}
.task-group-warning .card-title{color:var(--danger)}
.todo-filter-row{overflow-x:auto;flex-wrap:nowrap;padding-bottom:2px;scrollbar-width:none}
.todo-filter-row::-webkit-scrollbar{display:none}
.todo-filter-row .filter-button{white-space:nowrap;flex:0 0 auto}
.todo-page .task-group-card .card-body{padding-top:2px}
@media (max-width:560px){
  .today-task-toolbar{align-items:center}
  .today-task-toolbar .primary-small{padding:7px 10px}
  .task-row{grid-template-columns:28px minmax(0,1fr) auto}
  .task-time{font-size:11px;max-width:76px;text-align:right}
  .todo-header-card .card-header{align-items:flex-start}
  .todo-header-card .primary-small{white-space:nowrap}
}


/* Phase 5.8 — Schedule UX */
.schedule-header-card .card-header{align-items:flex-start}
.schedule-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;padding:0 14px 14px}
.schedule-summary .stat{background:var(--bg-elevated);border:1px solid var(--line);border-radius:10px;padding:10px;text-align:center}
.schedule-summary .stat strong{display:block;font-size:18px}
.schedule-summary .stat span{font-size:10px;color:var(--muted)}
.schedule-day-card{overflow:hidden}
.schedule-day-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-bottom:1px solid var(--line)}
.schedule-day-title{font-size:14px;font-weight:700}
.schedule-day-body{padding:0 14px 10px}
.schedule-item{display:grid;grid-template-columns:28px 92px minmax(0,1fr);gap:9px;align-items:start;padding:11px 2px;border-bottom:1px solid var(--line)}
.schedule-item:last-child{border-bottom:0}
.schedule-item.overdue{background:rgba(255,120,100,.04)}
.schedule-time{font-size:11px;color:var(--cyan);padding-top:3px;white-space:nowrap}
.schedule-time.all-day{color:var(--muted)}
.schedule-main{min-width:0}
.schedule-main .task-title{font-size:13px}
.schedule-notes{color:var(--muted);font-size:10px;margin-top:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.schedule-add-day{width:30px;height:30px}
.schedule-completed{margin:7px 0 0}
@media (max-width:560px){
  .schedule-item{grid-template-columns:26px 82px minmax(0,1fr);gap:7px}
  .schedule-time{font-size:10px}
  .schedule-summary{gap:6px}
  .schedule-summary .stat{padding:9px 6px}
}


/* Phase 5.9 — Weekly Review UX */
.review-layout { display:grid; gap:12px; }
.review-sidebar-card, .review-reader-card { min-width:0; }
.review-sidebar-card { padding:0; overflow:hidden; }
.review-sidebar-card .card-header { padding:16px 16px 12px; border-bottom:1px solid var(--line); }
.review-week-list { display:flex; gap:7px; overflow-x:auto; padding:10px; scrollbar-width:none; }
.review-week-list::-webkit-scrollbar { display:none; }
.review-week-button {
  flex:0 0 auto; min-width:150px; display:flex; align-items:center; justify-content:space-between; gap:10px;
  padding:10px 11px; border:1px solid var(--line); border-radius:11px; background:rgba(0,0,0,.10);
  color:var(--text); text-align:left; cursor:pointer;
}
.review-week-button span { min-width:0; }
.review-week-button strong { display:block; font-size:12px; white-space:nowrap; }
.review-week-button small { display:block; margin-top:3px; color:var(--subtle); font-size:9px; white-space:nowrap; }
.review-week-button em { font-style:normal; font-size:9px; color:var(--cyan); }
.review-week-button.active { border-color:color-mix(in srgb, var(--accent) 34%, transparent); background:var(--accent-soft); }
.review-reader-card { padding:16px; }
.review-reader-head { display:flex; align-items:flex-start; justify-content:space-between; gap:12px; padding-bottom:13px; border-bottom:1px solid var(--line); }
.review-summary { margin:14px 0; padding:12px 13px; border:1px solid rgba(167,154,252,.16); border-radius:12px; background:rgba(167,154,252,.055); }
.review-summary > span { color:var(--purple,#a79afc); font-size:10px; font-weight:800; letter-spacing:.04em; }
.review-summary p { margin:5px 0 0; color:var(--muted); font-size:12px; line-height:1.6; }
.review-document { padding:3px 0 8px; overflow-wrap:anywhere; }
.review-heading { margin:18px 0 8px; line-height:1.35; }
.review-heading.level-1 { font-size:18px; }
.review-heading.level-2 { font-size:15px; color:var(--text); }
.review-heading.level-3, .review-heading.level-4 { font-size:13px; color:var(--accent); }
.review-paragraph { margin:7px 0; color:var(--muted); font-size:12px; line-height:1.72; }
.review-list { display:grid; gap:6px; margin:8px 0 12px; }
.review-list-item { display:grid; grid-template-columns:22px minmax(0,1fr); gap:7px; align-items:start; color:var(--muted); font-size:12px; line-height:1.6; }
.review-list-item.done { opacity:.62; text-decoration:line-through; }
.review-check { width:18px; height:18px; border:1px solid var(--line-strong); border-radius:6px; display:grid; place-items:center; color:var(--green); font-size:10px; margin-top:1px; }
.review-bullet { color:var(--cyan); text-align:center; }
.review-number { color:var(--purple,#a79afc); text-align:center; font-size:10px; padding-top:2px; }
.review-quote { margin:10px 0; padding:10px 12px; border-left:3px solid color-mix(in srgb, var(--accent) 38%, transparent); border-radius:0 9px 9px 0; background:var(--accent-soft); color:var(--muted); font-size:12px; line-height:1.65; }
.review-rule { border:0; border-top:1px solid var(--line); margin:15px 0; }
.review-document code { padding:1px 5px; border-radius:5px; background:var(--panel-2); color:var(--text); font-size:.92em; }
.review-pager { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:7px; padding-top:13px; border-top:1px solid var(--line); }
.review-pager .filter-button { width:100%; min-width:0; }
.review-pager .filter-button:disabled { opacity:.35; cursor:default; }
.review-workflow { display:grid; grid-template-columns:1fr; gap:8px; }
.review-workflow > div { display:grid; grid-template-columns:28px 1fr; gap:9px; align-items:center; padding:10px 11px; border:1px solid var(--line); border-radius:11px; background:rgba(0,0,0,.10); }
.review-workflow strong { width:26px; height:26px; border-radius:8px; display:grid; place-items:center; background:var(--accent-soft); color:var(--accent); font-size:11px; }
.review-workflow span { color:var(--muted); font-size:11px; }

@media (min-width: 1020px) {
  .review-layout { grid-template-columns:250px minmax(0,1fr); align-items:start; }
  .review-sidebar-card { position:sticky; top:92px; }
  .review-week-list { display:grid; max-height:calc(100vh - 220px); overflow-y:auto; overflow-x:hidden; padding:10px; }
  .review-week-button { width:100%; min-width:0; }
  .review-reader-card { padding:20px 22px; }
  .review-document { max-width:860px; }
}


/* Phase 5.9.1 — Review Center */
.review-center-home { display:grid; gap:13px; }
.review-center-intro { padding-bottom:3px; }
.review-center-intro p { margin:5px 0 0; color:var(--subtle); font-size:11px; }
.review-home-grid { display:grid; gap:9px; grid-template-columns:1fr; }
.review-home-card {
  width:100%; border:1px solid var(--line); border-radius:14px; background:rgba(0,0,0,.10);
  color:var(--text); padding:14px; display:grid; grid-template-columns:38px minmax(0,1fr) auto;
  gap:11px; align-items:center; text-align:left; cursor:pointer;
}
.review-home-card.primary { border-color:color-mix(in srgb, var(--accent) 25%, transparent); background:var(--accent-soft); }
.review-home-card.muted { opacity:.72; cursor:default; }
.review-home-card.compact { grid-template-columns:minmax(0,1fr) auto; }
.review-home-icon { width:36px; height:36px; display:grid; place-items:center; border-radius:11px; background:color-mix(in srgb, var(--purple) 10%, transparent); color:var(--purple); font-size:17px; }
.review-home-card small { display:block; color:var(--subtle); font-size:9px; margin-bottom:3px; }
.review-home-card strong { display:block; font-size:13px; }
.review-home-card em { display:block; font-style:normal; color:var(--muted); font-size:10px; margin-top:4px; line-height:1.4; }
.review-home-card b { font-size:10px; color:var(--cyan); white-space:nowrap; }
.review-history { border-top:1px solid var(--line); padding-top:12px; }
.review-history-title { display:flex; justify-content:space-between; align-items:center; margin-bottom:7px; }
.review-history-title strong { font-size:12px; }
.review-history-title span { color:var(--subtle); font-size:9px; }
.review-history-row { width:100%; display:flex; justify-content:space-between; align-items:center; gap:9px; padding:9px 3px; border:0; border-bottom:1px solid var(--line); background:transparent; color:var(--text); text-align:left; cursor:pointer; }
.review-history-row strong { display:block; font-size:11px; }
.review-history-row small { display:block; color:var(--subtle); font-size:9px; margin-top:2px; }
.review-history-row b { color:var(--cyan); }
@media (min-width: 760px) {
  .review-home-grid { grid-template-columns:1fr 1fr; }
}

/* BUILD: Phase 5.9.2 · 2026-08-31 */

/* Phase 5.12 · Search & Daily UX */
.search-overlay{align-items:start;padding-top:5vh}
.search-card{width:min(100%,560px);max-height:88vh;display:grid;gap:12px}
.search-field{position:relative}
.search-field-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:16px;pointer-events:none}
.search-input{padding-left:38px}
.search-results{display:grid;gap:12px;max-height:54vh;overflow-y:auto}
.search-group{display:grid;gap:5px}
.search-group-head{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:11px;font-weight:800;color:var(--muted)}
.search-group-head small{font-weight:600;color:var(--subtle);font-size:10px}
.search-group-list{display:grid;gap:5px}
.search-row{display:flex;flex-direction:column;gap:2px;text-align:left;padding:9px 11px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--text);cursor:pointer}
.search-row-title{font-size:13px;line-height:1.4;overflow-wrap:anywhere}
.search-row-meta{font-size:10px;color:var(--muted)}
.search-row:active{background:var(--accent-soft)}
.search-empty{padding:26px 10px;text-align:center;color:var(--subtle);font-size:12px}
.search-total{padding:4px 2px;font-size:10px;color:var(--subtle);text-align:center}
.search-hit{animation:searchFlash 2.2s ease}
@keyframes searchFlash{0%{background:var(--accent-soft);box-shadow:0 0 0 1px var(--accent) inset}70%{background:var(--accent-soft);box-shadow:0 0 0 1px var(--accent) inset}100%{background:transparent;box-shadow:none}}

.collapse-toggle{width:32px;height:32px;flex:0 0 auto;display:grid;place-items:center;border:1px solid var(--line);border-radius:9px;background:var(--panel);color:var(--muted);font-size:16px;line-height:1;cursor:pointer}
.collapse-toggle:active{background:var(--accent-soft);color:var(--accent)}
.today-collapsible.is-collapsed .card-header{border-bottom:0}

.schedule-quick{display:grid;gap:7px;padding:2px 0 4px}
.schedule-quick-row{display:grid;grid-template-columns:34px minmax(0,1fr);gap:8px;align-items:center}
.schedule-quick-label{font-size:11px;color:var(--muted)}
.schedule-quick-chips{display:flex;flex-wrap:wrap;gap:6px}
.quick-chip{min-height:40px;padding:8px 14px;border:1px solid var(--line-strong);border-radius:999px;background:var(--panel);color:var(--text);font-size:12px;cursor:pointer}
.quick-chip:active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}

.sync-line{margin-top:6px;font-size:10px;color:var(--muted)}
.sync-status-card .sync-line:first-of-type{margin-top:8px}

.theme-mode-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:2px 2px 12px}
.theme-mode-label{font-size:12px;font-weight:800;color:var(--text)}
.theme-mode-toggle{flex:0 0 auto}

@media (max-width:560px){
  .search-overlay{padding-top:2vh}
  .schedule-quick-row{grid-template-columns:1fr;gap:3px}
  .theme-mode-row{flex-direction:column;align-items:flex-start;gap:8px}
}

/* BUILD: Phase 5.12 · 2026-09-01 */
/* Phase 5.12.1 · data-read resilience */
.stale-banner{margin-bottom:12px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--muted);font-size:12.5px;line-height:1.5}
.retry-data-btn{margin-top:12px;width:100%;min-height:44px;border:0;border-radius:12px;background:var(--accent);color:var(--on-accent);font-weight:700;cursor:pointer}

/* BUILD: Phase 5.13 · Reliability & Interaction Polish */
.offline-banner{position:fixed;top:0;left:0;right:0;z-index:120;padding:10px 14px calc(10px + env(safe-area-inset-top,0px));text-align:center;font-size:12.5px;line-height:1.5;color:#fff;background:var(--danger);box-shadow:var(--shadow)}
.task-toggle{position:relative}
.task-toggle::before{content:"";position:absolute;inset:-12px}
.collapse-toggle{position:relative}
.collapse-toggle::before{content:"";position:absolute;inset:-6px}
.project-task-add-icon{position:relative}
.project-task-add-icon::before{content:"";position:absolute;inset:-7px}
.inline-edit{min-height:28px;display:inline-grid;place-items:center;padding:6px 9px}
button.pending{opacity:.55;cursor:wait;pointer-events:none}
button:disabled{opacity:.55}
.task-toggle.pending{opacity:.5}
.search-results{overscroll-behavior:contain;-webkit-overflow-scrolling:touch}
body:has(.search-overlay){overflow:hidden}
.search-hit{scroll-margin-top:80px}
.search-row{min-height:44px;justify-content:center}
.search-input{min-height:48px}
.quick-card{min-height:78px;justify-content:center}
.filter-button{min-height:36px}
@media (max-width:699px){
  .toast{width:calc(100vw - 24px)}
}

/* BUILD: Phase 5.14 · Timetable Editor + Daily Workflow Efficiency */
body:has(.task-modal){overflow:hidden}
.hidden-row{display:none!important}

/* 课程表：固定安排低饱和显示 + 空白格快捷新增 */
.week-cell.fixed{background:color-mix(in srgb, var(--accent) 9%, transparent);border-color:color-mix(in srgb, var(--accent) 30%, transparent)}
.week-cell.fixed .course-name{color:var(--text)}
.week-cell.fixed .course-meta{color:var(--muted)}
@media (hover:hover){
  .week-cell.free{cursor:pointer}
  .week-cell.free:hover{border-color:color-mix(in srgb, var(--accent) 45%, transparent);background:color-mix(in srgb, var(--accent) 7%, transparent);color:var(--text)}
  .week-cell.free:hover::after{content:"＋";position:absolute;top:6px;right:8px;font-size:12px;color:var(--accent)}
  .week-cell{position:relative}
}

/* 我的固定安排（手机卡片 / 桌面表格） */
.fixed-overlay-card{width:min(100%,680px);max-height:calc(100vh - 36px)}
.fixed-table-head{display:none}
.fixed-list{display:grid;gap:10px;max-height:56vh;overflow:auto;overscroll-behavior:contain}
.fixed-card{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px;border:1px solid var(--line-strong);border-radius:14px;background:var(--panel)}
.fixed-card-main{min-width:0;display:grid;gap:6px}
.fixed-card-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.fixed-name{font-size:15px;color:var(--text)}
.fixed-card-meta{display:flex;flex-wrap:wrap;gap:4px 12px;font-size:12px;color:var(--muted)}
.fixed-card-notes{font-size:12px;color:var(--subtle)}
.fixed-card-actions{flex:0 0 auto;display:flex;gap:8px}
.fixed-del{color:var(--danger)}
.fixed-new{width:100%;min-height:46px;border:0;border-radius:12px;background:var(--accent);color:var(--on-accent);font-weight:700;cursor:pointer}
@media (min-width:700px){
  .fixed-table-head{display:grid;grid-template-columns:1.2fr 1.4fr 1fr 120px;gap:12px;padding:6px 14px;font-size:11px;color:var(--subtle)}
  .fixed-list{gap:6px}
  .fixed-card{display:grid;grid-template-columns:1.2fr 1.4fr 1fr 120px;gap:12px;padding:10px 14px}
  .fixed-card-actions{justify-content:flex-end}
}

/* 固定安排表单 */
.fixed-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.fixed-mode-toggle{display:flex}
.fixed-mode-toggle button{flex:1}
.fixed-repeat-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.fixed-repeat-chips .quick-chip.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}
.fixed-textarea{min-height:84px;resize:vertical}

/* 任务轻量详情面板 */
.task-detail-card{width:min(100%,480px)}
.detail-title{font-size:19px;line-height:1.35;word-break:break-word}
.detail-rows{display:grid;gap:0}
.detail-row{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px}
.detail-row span{color:var(--muted);flex:0 0 auto}
.detail-row strong{color:var(--text);text-align:right;word-break:break-word}
.detail-move{margin-top:12px}
.detail-move-title{font-size:12px;font-weight:800;color:var(--text);margin-bottom:8px}
.detail-move-chips{display:flex;flex-wrap:wrap;gap:8px}
.danger-chip{border-color:color-mix(in srgb, var(--danger) 45%, transparent)!important;color:var(--danger)!important}
.detail-actions-row{margin-top:12px}

/* Today 现在要做 */
.now-card{border-left:3px solid var(--accent)}
.now-row .task-check{color:var(--accent)}
.fixed-course-row .task-check{color:var(--accent)}

/* 全局快速录入 */
.quick-add-card{width:min(100%,420px)}
.quick-add-option{width:100%;min-height:58px;display:grid;gap:3px;text-align:left;padding:12px 14px;border:1px solid var(--line-strong);border-radius:14px;background:var(--panel);color:var(--text);cursor:pointer}
.quick-add-option strong{font-size:15px}
.quick-add-option span{font-size:12px;color:var(--muted)}
.quick-add-option:active{background:var(--accent-soft);border-color:var(--accent)}

/* 项目选择 */
.project-picker-card{width:min(100%,480px)}
.project-pick-list{display:grid;gap:8px;max-height:60vh;overflow:auto;overscroll-behavior:contain}
.project-pick-option{width:100%;min-height:54px;display:grid;gap:3px;text-align:left;padding:11px 14px;border:1px solid var(--line-strong);border-radius:14px;background:var(--panel);color:var(--text);cursor:pointer}
.project-pick-option strong{font-size:14px}
.project-pick-option span{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.project-pick-option:active{background:var(--accent-soft);border-color:var(--accent)}

/* Phase 5.15 · Task Abandon & Review Integration */
.task-row.abandoned .task-check{border-color:var(--line-strong);background:var(--panel-2)}
.task-row.abandoned .abandoned-mark{border-color:transparent;background:transparent;color:var(--muted);font-size:15px;line-height:1}
.task-row.abandoned .task-title{color:var(--subtle)}
.task-row.abandoned .abandoned-title{text-decoration:none}
.task-row.abandoned .task-toggle{opacity:.35;pointer-events:none}
.abandoned-chip{color:var(--muted);border-color:var(--line-strong);background:var(--panel-2)}
.abandoned-chip::before{content:"⊘ ";color:var(--muted)}
.task-abandon{color:var(--accent)}
.task-abandon:active{background:var(--accent-soft)}
.task-restore{color:var(--green);border-color:color-mix(in srgb, var(--green) 25%, transparent)}
.task-restore:active{background:rgba(94,211,161,.12)}
.abandoned-fold>summary{color:var(--muted)}
.abandoned-fold>summary::after{content:" · 可恢复";font-size:10px;opacity:.75;margin-left:4px}
.abandon-dialog-card{width:min(100%,480px)}
.abandon-dialog-title{font-size:14px;font-weight:700;color:var(--text);padding:2px 2px 12px;overflow-wrap:anywhere}
.abandon-reason-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:0 2px 14px}
.abandon-reason-chip{width:100%;min-height:42px;justify-content:flex-start;text-align:left}
.abandon-reason-chip.active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:700}
.abandon-reason-chip.abandon-special{border-color:color-mix(in srgb, #f5b942 35%, transparent);color:#e8a93d}
.abandon-reason-chip.abandon-special.active{border-color:#f5b942;background:rgba(245,185,66,.14);color:#e8a93d}
.abandon-note-input{width:100%;box-sizing:border-box;margin-bottom:10px;resize:vertical}
.abandon-dialog-hint{font-size:11px;color:var(--muted);line-height:1.5;padding:0 2px 4px}
.abandon-dialog-hint::before{content:"ℹ "}
@media (max-width:560px){
  .abandon-reason-grid{grid-template-columns:1fr}
}

/* ===== Public Preview demo marker (read-only build) ===== */
.demo-banner{position:relative;z-index:90;display:block;width:100%;box-sizing:border-box;padding:9px 14px;text-align:center;font-size:12.5px;font-weight:600;line-height:1.5;color:#102124;background:linear-gradient(90deg,#67ced3,#8bdde1);box-shadow:0 1px 0 rgba(0,0,0,.12) inset}
.is-demo .brand-subtitle{color:var(--accent)}
.is-demo .sync-card strong{color:var(--accent)}
@media (max-width:560px){
  .demo-banner{font-size:11.5px;padding:8px 10px}
}