body{display:flex;min-height:100vh;flex-direction:column}.study-main{flex:1;padding:44px 0 78px}.study-intro{max-width:850px;margin:0 auto 34px;text-align:center}.breadcrumbs{display:flex;justify-content:center;gap:8px;margin-bottom:20px;color:var(--muted);font-size:.8rem}.breadcrumbs a{color:var(--primary);font-weight:800}.study-intro h1{margin:19px auto 15px}.study-intro .lead{max-width:760px}
.study-workspace{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(310px,.55fr);gap:20px;align-items:stretch}.focus-panel{--subject:#6c5ce7;position:relative;min-height:670px;overflow:hidden;padding:30px;border-radius:30px;color:#fff;background:radial-gradient(circle at 50% 36%,color-mix(in srgb,var(--subject) 40%,transparent),transparent 30%),radial-gradient(circle at 12% 12%,rgba(65,231,207,.18),transparent 26%),linear-gradient(145deg,#1f214c 0%,#322b69 55%,#1f5063 100%);box-shadow:0 28px 80px rgba(37,34,85,.26);isolation:isolate}.focus-panel:before,.focus-panel:after{content:"";position:absolute;z-index:-1;border-radius:50%;pointer-events:none}.focus-panel:before{width:360px;height:360px;top:-220px;right:-100px;background:rgba(255,255,255,.07)}.focus-panel:after{width:300px;height:300px;bottom:-210px;left:-90px;background:rgba(56,226,202,.1)}
.focus-top{position:relative;z-index:3;display:flex;align-items:flex-end;justify-content:space-between;gap:18px}.subject-control{display:grid;gap:7px}.subject-control label{color:rgba(255,255,255,.65);font-size:.68rem;font-weight:850;letter-spacing:.14em;text-transform:uppercase}.subject-select-wrap{display:flex;align-items:center;gap:9px}.subject-dot{width:9px;height:9px;flex:none;border-radius:50%;background:var(--subject);box-shadow:0 0 0 5px color-mix(in srgb,var(--subject) 20%,transparent)}.subject-select-wrap select{max-width:260px;padding:5px 27px 5px 0;border:0;color:#fff;background:transparent;outline:none;font-weight:850}.subject-select-wrap option{color:var(--text);background:#fff}.add-subject{display:flex;align-items:center;gap:7px;min-height:40px;padding:0 13px;border:1px solid rgba(255,255,255,.16);border-radius:12px;color:#fff;background:rgba(255,255,255,.08);font-size:.78rem;font-weight:800;backdrop-filter:blur(12px);transition:.2s}.add-subject:hover{background:rgba(255,255,255,.15)}.add-subject span{font-size:1.1rem}
.timer-zone{position:relative;display:grid;width:min(350px,74vw);aspect-ratio:1;place-items:center;margin:26px auto 15px}.progress-ring{--progress:0;position:absolute;inset:0;border-radius:50%;background:conic-gradient(from -90deg,#7df0dc calc(var(--progress)*1turn),rgba(255,255,255,.1) 0);filter:drop-shadow(0 0 15px rgba(125,240,220,.14));transition:background .2s linear}.progress-ring:after{content:"";position:absolute;inset:5px;border-radius:50%;background:linear-gradient(145deg,#2c2a62,#27395f)}.progress-ring-inner{position:absolute;z-index:2;inset:20px;border:1px solid rgba(255,255,255,.09);border-radius:50%;box-shadow:inset 0 0 45px rgba(255,255,255,.035)}.timer-copy{position:relative;z-index:3;display:grid;justify-items:center;text-align:center}.focus-state{min-height:18px;color:#88eadb;font-size:.68rem;font-weight:900;letter-spacing:.15em;text-transform:uppercase}.time-display{margin:9px 0 11px;font-size:clamp(4rem,9vw,6rem);font-weight:780;line-height:.95;letter-spacing:-.075em;font-variant-numeric:tabular-nums;text-shadow:0 7px 30px rgba(12,14,46,.3)}.subject-name{max-width:210px;overflow:hidden;color:rgba(255,255,255,.7);font-size:.83rem;font-weight:750;text-overflow:ellipsis;white-space:nowrap}.orbit{position:absolute;z-index:4;width:7px;height:7px;border-radius:50%;background:#fff;box-shadow:0 0 14px #fff;opacity:.55}.orbit-one{top:18%;right:13%}.orbit-two{bottom:16%;left:16%;width:4px;height:4px;background:#77ead8}.focus-panel.running .orbit-one{animation:floatOne 7s ease-in-out infinite}.focus-panel.running .orbit-two{animation:floatTwo 5s ease-in-out infinite}.focus-panel.running .progress-ring{filter:drop-shadow(0 0 21px rgba(125,240,220,.28))}
.duration-presets{display:flex;position:relative;z-index:3;justify-content:center;gap:7px;flex-wrap:wrap}.duration-chip{min-height:36px;padding:0 13px;border:1px solid rgba(255,255,255,.13);border-radius:999px;color:rgba(255,255,255,.7);background:rgba(255,255,255,.06);font-size:.74rem;font-weight:800;transition:.2s}.duration-chip:hover,.duration-chip.active{color:#28275a;border-color:#fff;background:#fff}.timer-status{position:relative;z-index:3;min-height:21px;margin:18px 0 15px;color:rgba(255,255,255,.68);font-size:.83rem;text-align:center}.timer-controls{position:relative;z-index:3;display:flex;align-items:center;justify-content:center;gap:9px}.icon-button,.start-button,.finish-button{min-height:50px;border-radius:15px;font-weight:850;transition:.2s}.icon-button{display:grid;width:50px;place-items:center;border:1px solid rgba(255,255,255,.16);color:#fff;background:rgba(255,255,255,.08)}.icon-button svg{width:19px;height:19px}.icon-button:hover{background:rgba(255,255,255,.15)}.start-button{min-width:165px;padding:0 22px;border:0;color:#28275a;background:#fff;box-shadow:0 14px 32px rgba(9,12,37,.25)}.start-button:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(9,12,37,.32)}.finish-button{padding:0 16px;border:1px solid rgba(255,255,255,.16);color:#fff;background:rgba(255,255,255,.08)}.finish-button:not(:disabled):hover{background:rgba(255,255,255,.15)}.finish-button:disabled{cursor:not-allowed;opacity:.4}.shortcut-hint{margin:16px 0 0;color:rgba(255,255,255,.4);font-size:.68rem;text-align:center}.shortcut-hint kbd{padding:2px 6px;border:1px solid rgba(255,255,255,.15);border-radius:5px;background:rgba(255,255,255,.07);font:inherit}
.study-sidebar{display:grid;gap:20px}.side-card{padding:25px;border:1px solid var(--border);border-radius:25px;background:rgba(255,255,255,.88);box-shadow:0 18px 52px rgba(53,49,110,.09);backdrop-filter:blur(16px)}.side-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:15px}.mini-label{display:block;margin-bottom:5px;color:var(--primary);font-size:.65rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase}.side-heading h2,.log-head h2{margin:0;font-size:1.25rem;letter-spacing:-.025em}.setup-icon{display:grid;width:42px;height:42px;place-items:center;border-radius:13px;color:var(--primary);background:#f0edff;font-size:.75rem;font-weight:900}.setting-field{display:grid;gap:8px;margin-top:24px}.setting-field label{font-size:.78rem;font-weight:850}.minute-input{display:flex;align-items:center;border:1px solid var(--border);border-radius:13px;background:#fff;overflow:hidden}.minute-input:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(108,92,231,.09)}.minute-input input{width:100%;height:48px;padding:0 13px;border:0;outline:0;font-weight:800}.minute-input span{padding-right:13px;color:var(--muted);font-size:.75rem}.sound-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:20px}.sound-row>span:first-child strong,.sound-row small{display:block}.sound-row>span:first-child strong{font-size:.8rem}.sound-row small{margin-top:3px;color:var(--muted);font-size:.68rem}.switch{position:relative;width:44px;height:25px;flex:none}.switch input{position:absolute;opacity:0}.switch>span{position:absolute;inset:0;border-radius:99px;background:#d6d5e1;transition:.2s}.switch>span:after{content:"";position:absolute;top:4px;left:4px;width:17px;height:17px;border-radius:50%;background:#fff;box-shadow:0 2px 8px #0002;transition:.2s}.switch input:checked+span{background:var(--primary)}.switch input:checked+span:after{transform:translateX(19px)}.privacy-note{display:flex;gap:10px;margin-top:24px;padding:13px;border-radius:14px;color:#50546c;background:#f1effb}.privacy-note>span{color:var(--primary);font-size:.75rem}.privacy-note p{margin:0;font-size:.7rem;line-height:1.5}.privacy-note strong{display:block;color:#393c57}.live-pill{display:flex;align-items:center;gap:6px;padding:6px 8px;border-radius:99px;color:#147566;background:#e8faf5;font-size:.65rem;font-weight:850}.live-pill i{width:6px;height:6px;border-radius:50%;background:#18bda4}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:22px}.stat-block{padding:14px 7px;border:1px solid var(--border);border-radius:14px;background:#fff;text-align:center}.stat-block strong,.stat-block span{display:block}.stat-block strong{color:var(--primary);font-size:1.25rem;letter-spacing:-.04em}.stat-block span{margin-top:3px;color:var(--muted);font-size:.62rem}.top-subject{display:flex;align-items:center;gap:10px;margin-top:13px;padding:13px;border-radius:14px;background:#f6f5fb}.top-dot{width:9px;height:9px;flex:none;border-radius:50%;background:#c8c6d4}.top-subject small,.top-subject strong{display:block}.top-subject small{color:var(--muted);font-size:.63rem}.top-subject strong{margin-top:3px;font-size:.76rem}
.log-section{margin-top:25px;padding:28px;border:1px solid var(--border);border-radius:28px;background:rgba(255,255,255,.82);box-shadow:0 18px 55px rgba(53,49,110,.07)}.log-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px}.log-head h2{font-size:1.55rem}.log-head p{margin:6px 0 0;color:var(--muted);font-size:.82rem}.log-actions{display:flex;align-items:center;gap:8px}.filter-label{color:var(--muted);font-size:.72rem;font-weight:800}.log-actions select{min-height:40px;padding:0 34px 0 11px;border:1px solid var(--border);border-radius:11px;color:var(--text);background:#fff;font-size:.76rem;font-weight:750}.clear-button{min-height:40px;padding:0 11px;border:1px solid #e7c7cc;border-radius:11px;color:#9e3f4a;background:#fff7f8;font-size:.72rem;font-weight:800}.subject-summary{display:flex;gap:9px;margin-top:22px;overflow-x:auto;padding-bottom:3px}.summary-chip{display:flex;min-width:max-content;align-items:center;gap:8px;padding:9px 12px;border:1px solid var(--border);border-radius:12px;background:#fff;font-size:.72rem}.summary-chip i{width:7px;height:7px;border-radius:50%;background:var(--chip)}.summary-chip strong{font-size:.75rem}.summary-chip span{color:var(--muted)}.log-list{display:grid;gap:8px;margin-top:18px}.log-row{display:grid;grid-template-columns:minmax(160px,1fr) auto auto auto;align-items:center;gap:18px;padding:13px 14px;border:1px solid var(--border);border-radius:14px;background:#fff}.log-subject{display:flex;align-items:center;gap:10px;min-width:0}.log-subject i{width:9px;height:9px;flex:none;border-radius:50%;background:var(--log-color)}.log-subject span{min-width:0;overflow:hidden;font-size:.8rem;font-weight:800;text-overflow:ellipsis;white-space:nowrap}.log-time,.log-date{color:var(--muted);font-size:.72rem}.log-duration{font-size:.78rem;font-weight:900}.log-badge{padding:5px 8px;border-radius:99px;color:#147566;background:#e8faf5;font-size:.62rem;font-weight:850}.log-badge.partial{color:#7a5d25;background:#fff5dc}.delete-log{display:grid;width:30px;height:30px;place-items:center;border:0;border-radius:9px;color:#a1a1af;background:transparent;font-size:1rem}.delete-log:hover{color:#a23f4a;background:#fff0f2}.empty-log{padding:52px 20px 32px;text-align:center}.empty-icon{display:grid;width:55px;height:55px;place-items:center;margin:0 auto 15px;border-radius:18px;color:var(--primary);background:#f0edff;font-weight:900}.empty-log h3{margin:0 0 7px;font-size:1.05rem}.empty-log p{max-width:460px;margin:0 auto;color:var(--muted);font-size:.82rem;line-height:1.6}
.content-section{padding:70px 0}.content-soft{border-block:1px solid rgba(31,34,62,.06);background:rgba(255,255,255,.45)}.content-copy{max-width:930px}.content-copy>h2{margin:0 0 11px;font-size:clamp(1.8rem,4vw,2.55rem);letter-spacing:-.04em}.content-copy>p{margin:0;color:var(--muted);line-height:1.75}.step-grid,.try-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:25px}.step-card{padding:22px;border:1px solid var(--border);border-radius:19px;background:#fff}.step-card>span{display:grid;width:31px;height:31px;place-items:center;margin-bottom:14px;border-radius:10px;color:#fff;background:linear-gradient(135deg,var(--primary),#897af2);font-size:.75rem;font-weight:900}.step-card h3{margin:0 0 7px;font-size:.98rem}.step-card p{margin:0;color:var(--muted);font-size:.83rem;line-height:1.65}.faq-list{display:grid;gap:10px;margin-top:22px}.faq-list details{border:1px solid var(--border);border-radius:15px;background:#fff}.faq-list summary{padding:17px 19px;cursor:pointer;font-weight:800}.faq-list p{margin:0;padding:0 19px 18px;color:var(--muted);line-height:1.7}.try-section{padding:0 0 76px}.try-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px}.try-head h2{margin:0 0 5px;font-size:1.55rem}.try-head p{margin:0;color:var(--muted)}.try-head>a{color:var(--primary);font-size:.84rem;font-weight:850}.try-card{display:flex;align-items:center;gap:13px;padding:18px;border:1px solid var(--border);border-radius:17px;background:#fff;transition:.2s}.try-card:hover{transform:translateY(-3px);box-shadow:0 14px 35px rgba(53,49,110,.1)}.try-icon{display:grid;width:46px;height:46px;flex:none;place-items:center;border-radius:13px;color:var(--primary);background:#f0edff;font-size:.67rem;font-weight:900}.try-card strong,.try-card span span{display:block}.try-card span span{margin-top:4px;color:var(--muted);font-size:.74rem}
dialog{width:min(500px,calc(100% - 24px));padding:0;border:0;border-radius:24px;color:var(--text);background:#fff;box-shadow:0 30px 90px rgba(29,27,61,.35)}dialog::backdrop{background:rgba(25,24,50,.55);backdrop-filter:blur(5px)}.dialog-form{padding:25px}.dialog-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.dialog-head h2{margin:0;font-size:1.35rem}.dialog-close{display:grid;width:38px;height:38px;place-items:center;border:0;border-radius:11px;background:#f3f2f7;font-size:1.3rem}.dialog-field{display:grid;gap:8px;margin-top:22px;font-size:.78rem;font-weight:850}.dialog-field input{height:48px;padding:0 13px;border:1px solid var(--border);border-radius:12px;outline:0}.dialog-field input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(108,92,231,.1)}.color-field{padding:0;margin:18px 0 0;border:0}.color-field legend{margin-bottom:9px;font-size:.78rem;font-weight:850}.color-options{display:flex;gap:9px}.color-option{position:relative;width:34px;height:34px;border:3px solid #fff;border-radius:50%;background:var(--color);box-shadow:0 0 0 1px #d6d5df}.color-option.selected{box-shadow:0 0 0 3px var(--primary)}.dialog-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:25px}.secondary-button,.primary-button{min-height:44px;padding:0 17px;border-radius:12px;font-weight:850}.secondary-button{border:1px solid var(--border);color:var(--text);background:#fff}.primary-button{border:0;color:#fff;background:var(--primary)}.toast{position:fixed;right:22px;bottom:22px;z-index:120;max-width:calc(100% - 44px);padding:13px 17px;border-radius:13px;color:#fff;background:#25263d;box-shadow:0 14px 38px rgba(31,34,62,.24);opacity:0;transform:translateY(14px);pointer-events:none;transition:.25s}.toast.show{opacity:1;transform:none}.celebration{position:fixed;inset:0;z-index:110;display:grid;place-items:center;padding:20px;background:rgba(22,20,48,.28);opacity:0;visibility:hidden;transition:.3s;backdrop-filter:blur(3px)}.celebration.show{opacity:1;visibility:visible}.celebration-card{width:min(440px,100%);padding:34px;border-radius:25px;color:#fff;background:radial-gradient(circle at top right,rgba(89,230,205,.25),transparent 34%),linear-gradient(145deg,#29265f,#43377d);box-shadow:0 30px 90px rgba(24,21,64,.4);text-align:center;transform:scale(.84) translateY(12px);transition:.35s}.celebration.show .celebration-card{transform:none}.celebration-card>span{color:#79ead8;font-size:.68rem;font-weight:900;letter-spacing:.16em;text-transform:uppercase}.celebration-card strong{display:block;margin:9px 0 7px;font-size:2rem;letter-spacing:-.04em}.celebration-card p{margin:0;color:rgba(255,255,255,.7)}.confetti{position:fixed;z-index:121;top:-18px;width:9px;height:15px;border-radius:3px;background:var(--confetti);pointer-events:none;animation:confettiFall 1.8s ease-in forwards}
@keyframes floatOne{50%{transform:translate(-18px,14px);opacity:1}}@keyframes floatTwo{50%{transform:translate(13px,-17px);opacity:.8}}@keyframes confettiFall{to{transform:translate(var(--x),105vh) rotate(760deg);opacity:.2}}
@media(max-width:930px){.study-workspace{grid-template-columns:1fr}.study-sidebar{grid-template-columns:1fr 1fr}.focus-panel{min-height:650px}.step-grid,.try-grid{grid-template-columns:1fr 1fr}.try-card:last-child{grid-column:1/-1}}@media(max-width:680px){.study-main{padding:32px 0 58px}.study-intro{margin-bottom:25px}.focus-panel{min-height:630px;padding:20px 14px;border-radius:24px}.focus-top{align-items:flex-start}.subject-select-wrap select{max-width:180px}.add-subject{padding:0 10px}.timer-zone{width:min(330px,82vw);margin-top:30px}.timer-controls{flex-wrap:wrap}.finish-button{order:3;width:100%;max-width:224px}.shortcut-hint{display:none}.study-sidebar{grid-template-columns:1fr}.log-section{padding:21px 15px;border-radius:22px}.log-head{align-items:flex-start;flex-direction:column}.log-actions{width:100%;flex-wrap:wrap}.log-actions select{flex:1}.log-row{grid-template-columns:minmax(0,1fr) auto auto;gap:10px}.log-date{grid-column:1/2;padding-left:19px}.log-badge{display:none}.step-grid,.try-grid{grid-template-columns:1fr}.try-card:last-child{grid-column:auto}.content-section{padding:54px 0}.try-head{align-items:flex-start;flex-direction:column}.stat-grid{gap:5px}}@media(max-width:390px){.subject-select-wrap select{max-width:148px}.add-subject{font-size:0}.add-subject span{font-size:1.2rem}.time-display{font-size:3.7rem}.duration-chip{padding:0 10px}.start-button{min-width:150px}.log-time{display:none}.log-row{grid-template-columns:minmax(0,1fr) auto}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
.log-row{grid-template-columns:minmax(160px,1fr) auto auto auto auto}
@media(max-width:680px){.log-row{grid-template-columns:minmax(0,1fr) auto auto;gap:7px 10px}.log-subject{grid-column:1;grid-row:1}.log-duration{grid-column:2;grid-row:1}.delete-log{grid-column:3;grid-row:1}.log-date{grid-column:1/-1;grid-row:2;padding-left:19px}}
@media(max-width:390px){.log-row{grid-template-columns:minmax(0,1fr) auto auto}}