:root{--canvas:#eef7f2;--surface:#fff;--ink:#214c43;--muted:#536c62;--primary:#356b59;--mint:#ddf0e6;--paper:#fff9ee;--envelope:#ebdcc4;--line:#d7e1da;--control-line:#74857b;--danger:#a83a45;--danger-soft:#f9e6e8;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", sans-serif;--radius-card:16px;--radius-bubble:16px;--radius-button:12px;--gutter:20px;--ease-out:cubic-bezier(.16, 1, .3, 1);--glass-bg:color-mix(in srgb, var(--surface) 90%, transparent);--glass-blur:blur(20px) saturate(160%);--glass-edge:0 0 0 .5px #214c4324;--glass-shadow:0 8px 24px #214c431f}@media (width<=360px){:root{--gutter:16px}}*,:before,:after{box-sizing:border-box}html,body{background:var(--canvas);height:100%;color:var(--ink);font:16px/1.65 var(--font);-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;margin:0;overflow:hidden}#root{inset-inline:0;top:var(--vv-top,0px);height:var(--vv-h,100dvh);justify-content:center;display:flex;position:fixed}::selection{background:var(--mint);color:var(--ink)}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}input,textarea,button,select{font:inherit;color:inherit;caret-color:var(--primary)}button{cursor:pointer}button:disabled{cursor:not-allowed}h1,h2,p{margin:0}*{scrollbar-width:thin;scrollbar-color:var(--line) transparent}.sr-only{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.icon{-webkit-mask:var(--icon) center / contain no-repeat;-webkit-mask:var(--icon) center / contain no-repeat;mask:var(--icon) center / contain no-repeat;forced-color-adjust:none;background-color:currentColor;flex:none;display:inline-block}.muted{color:var(--muted)}.link{color:var(--primary);text-underline-offset:3px;font-weight:600}.app{background:var(--canvas);flex-direction:column;width:100%;max-width:640px;height:100%;display:flex;position:relative}.splash{flex:1}.offline{padding:8px var(--gutter);padding-top:calc(8px + env(safe-area-inset-top));background:var(--danger-soft);color:var(--danger);text-align:center;flex:none;font-size:14px;font-weight:600}.offline+* .screen-head,.offline+.shell .screen-head{padding-top:8px}.shell{--tabbar-space:calc(64px + 16px + env(safe-area-inset-bottom));flex-direction:column;flex:1;min-height:0;display:flex;position:relative}.shell-main{flex-direction:column;flex:1;min-height:0;display:flex;position:relative}.screen{flex-direction:column;flex:1;min-height:0;display:flex}.paper-screen{background:var(--paper)}.screen-head{min-height:56px;padding:calc(6px + env(safe-area-inset-top)) max(var(--gutter), env(safe-area-inset-right)) 6px max(var(--gutter), env(safe-area-inset-left));flex:none;align-items:center;gap:8px;display:flex}.screen-head>.icon-btn:first-child{margin-left:-10px}.screen-head>.icon-btn:last-child{margin-right:-10px}.screen-title{overflow-wrap:anywhere;flex:1;min-width:0;font-size:20px;font-weight:600;line-height:1.4}.screen-title.is-large{letter-spacing:-.02em;font-size:28px;font-weight:700;line-height:1.25}.screen-sub{color:var(--muted);margin-left:6px;font-size:13px;font-weight:400}.head-spacer{width:34px}.screen-body{overscroll-behavior:contain;min-height:0;padding:8px max(var(--gutter), env(safe-area-inset-right)) 32px max(var(--gutter), env(safe-area-inset-left));flex:1;overflow-y:auto}.tabbar{z-index:10;left:max(16px, env(safe-area-inset-left));right:max(16px, env(safe-area-inset-right));bottom:calc(8px + env(safe-area-inset-bottom));border-radius:32px;gap:4px;padding:4px;display:flex;position:absolute}.tabbar,.composer,.menu,.dialog-sheet,.segmented{background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);box-shadow:var(--glass-edge), var(--glass-shadow)}.shell .screen-body{padding-bottom:calc(32px + var(--tabbar-space))}.shell .composer{margin-bottom:var(--tabbar-space)}.shell:has(.composer-input:focus) .composer{margin-bottom:8px}.shell:has(.composer-input:focus){--tabbar-space:0px}.shell:has(.composer-input:focus) .tabbar{display:none}.tab{min-height:56px;color:var(--muted);transition:background-color .2s var(--ease-out);border-radius:28px;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;padding:6px 4px;font-size:12px;line-height:1.3;text-decoration:none;display:flex;position:relative}.tab[aria-current=page]{background:var(--mint);color:var(--primary);font-weight:700}.badge{background:var(--primary);color:#fff;text-align:center;font-variant-numeric:tabular-nums;border-radius:9px;min-width:18px;height:18px;padding:0 5px;font-size:11px;font-weight:700;line-height:18px;position:absolute;top:4px;left:calc(50% + 6px)}.btn{border-radius:var(--radius-button);border:1px solid #0000;justify-content:center;align-items:center;gap:6px;min-height:48px;padding:0 20px;font-size:16px;font-weight:600;line-height:1.3;text-decoration:none;transition:background-color .15s,opacity .15s;display:inline-flex}.btn:disabled{opacity:.45}.btn-primary{background:var(--primary);color:#fff}.btn-primary:not(:disabled):hover{background:color-mix(in srgb, var(--primary) 88%, #000)}.btn-secondary{background:var(--surface);border-color:var(--control-line);color:var(--ink)}.btn-secondary:not(:disabled):hover{background:var(--canvas)}.btn-danger{background:var(--danger);color:#fff}.btn-small{min-height:44px;padding:0 14px;font-size:15px}.btn-block{width:100%}.icon-btn{border-radius:var(--radius-button);width:44px;height:44px;color:var(--ink);background:0 0;border:0;flex:none;justify-content:center;align-items:center;display:inline-flex}.icon-btn:not(:disabled):hover{background:color-mix(in srgb, var(--mint) 70%, transparent)}.icon-btn:disabled{color:var(--control-line)}.icon-btn.is-small{width:44px;height:44px;color:var(--muted);margin:-4px}.icon-btn.on-dark{color:#fff}.icon-btn.on-dark:not(:disabled):hover{background:#ffffff1f}.icon-btn.on-dark:disabled{color:#ffffff59}.text-btn{min-height:44px;color:var(--primary);background:0 0;border:0;align-items:center;padding:0 8px;font-size:15px;font-weight:600;display:inline-flex}.text-btn:disabled{color:var(--control-line)}.text-btn.is-danger{color:var(--danger)}.text-btn.is-quiet{color:var(--muted);font-weight:400}.inline-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.field{gap:6px;display:grid}.field-label{font-size:14px;font-weight:600}.input{border:1px solid var(--control-line);border-radius:var(--radius-button);background:var(--surface);width:100%;min-height:48px;padding:10px 14px;font-size:16px}.input-wrap{display:block;position:relative}.input-wrap .input{padding-right:52px}.input-addon{color:var(--muted);position:absolute;top:2px;right:2px}.form-error,.field-error{color:var(--danger);font-size:14px;line-height:1.5}.form-error{border-radius:var(--radius-button);background:var(--danger-soft);padding:10px 12px}.field-note{color:var(--muted);font-size:13px;line-height:1.5}.state-block{text-align:center;color:var(--muted);justify-items:center;gap:12px;padding:48px 0;display:grid}.empty{padding:48px var(--gutter);color:var(--muted);text-align:center}.paper-empty{justify-items:center;gap:16px;display:grid}.login{padding:env(safe-area-inset-top) var(--gutter) env(safe-area-inset-bottom);justify-content:center}.login-inner{width:100%;max-width:380px;margin:0 auto}.wordmark{letter-spacing:.08em;color:var(--primary);font-size:22px;font-weight:700;line-height:1.35}.login-tagline{color:var(--muted);margin-top:4px}.login-form{gap:16px;margin-top:32px;display:grid}.check-group{gap:4px;display:grid}.check-row{cursor:pointer;align-items:flex-start;gap:12px;min-height:44px;padding:8px 0;display:flex}.check-row input{width:22px;height:22px;accent-color:var(--primary);flex:none;margin:1px 0 0}.check-row span{gap:2px;font-weight:600;display:grid}.check-row small{color:var(--muted);font-size:13px;font-weight:400;line-height:1.5}.login-form .btn{margin-top:8px}.dialog{color:var(--ink);background:var(--surface);border:0;padding:0}.dialog::backdrop{background:#214c4352}.dialog-sheet{background:var(--glass-bg);border-radius:28px 28px 0 0;width:100%;max-width:640px;max-height:85dvh;margin:auto auto 0;overflow-y:auto}.dialog-sheet[open]{animation:sheet-in .24s var(--ease-out)}@keyframes sheet-in{0%{opacity:0;transform:translateY(24px)}}.dialog-inner{padding:20px var(--gutter) calc(20px + env(safe-area-inset-bottom));gap:16px;display:grid}.dialog-title{font-size:18px;font-weight:600;line-height:1.4}.dialog-text{color:var(--muted)}.dialog-actions{grid-template-columns:1fr 1fr;gap:8px;display:grid}.sheet-actions{margin:-8px calc(var(--gutter) * -1) 0;display:grid}.sheet-btn{min-height:52px;padding:0 var(--gutter);border:0;border-top:1px solid var(--line);text-align:left;background:0 0;font-size:16px}.sheet-btn:first-child{border-top:0}.sheet-btn:not(:disabled):hover{background:var(--canvas)}.sheet-btn:disabled{color:var(--control-line)}.sheet-btn.is-danger{color:var(--danger)}.sheet-btn.is-quiet{color:var(--muted)}.choice-group{border:0;gap:8px;margin:0;padding:0;display:grid}.choice{border:1px solid var(--control-line);border-radius:var(--radius-button);cursor:pointer;align-items:flex-start;gap:12px;padding:14px;display:flex}.choice:has(input:checked){border-color:var(--primary);background:color-mix(in srgb, var(--mint) 55%, transparent)}.choice input{width:20px;height:20px;accent-color:var(--primary);flex:none;margin:2px 0 0}.choice span{gap:2px;display:grid}.choice small{color:var(--muted);font-size:14px;line-height:1.5}.menu{z-index:50;min-width:200px;max-width:min(280px,100vw - 16px);animation:menu-in .18s var(--ease-out);border-radius:18px;padding:4px 0;display:grid;position:fixed}@keyframes menu-in{0%{opacity:0;transform:scale(.92)}}.menu-item{border:0;border-top:.5px solid color-mix(in srgb, var(--control-line) 35%, transparent);min-height:44px;color:var(--ink);text-align:left;background:0 0;padding:10px 16px;font-size:17px;line-height:1.3}.menu-item:first-child{border-top:0}.menu-item:not(:disabled):hover,.menu-item:focus-visible{background:color-mix(in srgb, var(--mint) 70%, transparent);outline:none}.menu-item.is-danger{color:var(--danger)}.menu-item:disabled{color:var(--control-line)}.icon-btn[aria-expanded=true]{background:color-mix(in srgb, var(--mint) 70%, transparent)}.messenger{background:var(--canvas)}.msg-area{flex-direction:column;flex:1;min-height:0;display:flex;position:relative}.msg-scroll:focus{outline:none}.msg-scroll{overscroll-behavior:contain;min-height:0;padding:0 max(var(--gutter), env(safe-area-inset-right)) 12px max(var(--gutter), env(safe-area-inset-left));flex:1;overflow-y:auto}.older{justify-items:center;padding:8px 0;display:grid}.msg-list{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}.day{color:var(--muted);align-self:center;margin:16px 0 8px;font-size:13px}.msg{flex-direction:column;align-items:flex-start;max-width:82%;margin-top:6px;display:flex}.msg.is-mine{align-self:flex-end;align-items:flex-end}.bubble{border-radius:var(--radius-bubble);background:var(--surface);overflow-wrap:anywhere;border-top-left-radius:6px;max-width:100%;padding:10px 14px}.is-mine>.bubble,.is-mine .msg-select>.bubble{background:var(--mint);border-top-left-radius:var(--radius-bubble);border-top-right-radius:6px}.bubble:has(.photo-grid){padding:4px}.bubble:has(.photo-grid) .bubble-text{padding:6px 10px}.bubble-text{white-space:pre-wrap}.quote{background:color-mix(in srgb, var(--primary) 9%, transparent);border:1px solid #0000;border-radius:10px;margin-bottom:6px;padding:6px 10px;font-size:14px;line-height:1.4;display:grid}.bubble:has(.photo-grid) .quote{margin:2px 2px 4px}.quote-who{color:var(--primary);font-size:13px;font-weight:600}.quote-text{-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.quote.is-gone .quote-text{color:var(--muted)}button.quote{width:100%;min-height:44px;color:inherit;text-align:start;cursor:pointer;-webkit-tap-highlight-color:transparent;font-family:inherit}button.quote:active{background:color-mix(in srgb, var(--primary) 18%, transparent)}button.quote:focus-visible{outline:2px solid var(--primary);outline-offset:2px}@media (hover:hover){button.quote:hover{background:color-mix(in srgb, var(--primary) 14%, transparent)}}.msg:focus{outline:none}.msg:focus-visible .bubble{outline:2px solid var(--primary);outline-offset:2px}.msg[data-flash] .bubble{animation:tt-quote-flash 1.2s var(--ease-out)}@keyframes tt-quote-flash{0%,30%{box-shadow:0 0 0 3px color-mix(in srgb, var(--primary) 45%, transparent)}to{box-shadow:0 0 0 3px #0000}}.bubble.is-deleted{border:1px dashed var(--control-line);color:var(--muted);font-size:14px;background:0 0!important}.msg-foot{align-items:center;gap:2px;display:flex}.is-mine .msg-foot{flex-direction:row-reverse}.msg-meta{color:var(--muted);gap:6px;padding:2px 4px;font-size:12px;line-height:1.5;display:inline-flex}.msg-read{color:var(--primary);font-weight:600}.msg-failed{color:var(--danger);flex-wrap:wrap;justify-content:flex-end;align-items:center;column-gap:2px;font-size:13px;display:flex}.msg-select{align-items:inherit;cursor:pointer;flex-direction:column;padding-left:32px;display:flex;position:relative}.is-mine .msg-select{padding-left:0;padding-right:32px}.check{border:1.5px solid var(--control-line);background:var(--surface);color:#fff;border-radius:50%;place-items:center;width:22px;height:22px;display:grid;position:absolute;top:8px;left:0}.is-mine .check{left:auto;right:0}.msg-select.is-checked .check{border-color:var(--primary);background:var(--primary)}.msg-select:has(input:focus-visible) .bubble{outline:2px solid var(--primary);outline-offset:2px}.jump{background:var(--primary);color:#fff;border:0;border-radius:20px;min-height:44px;padding:0 16px;font-size:14px;font-weight:600;position:absolute;bottom:12px;left:50%;transform:translate(-50%);box-shadow:0 4px 16px #214c4333}.jump-note{background:var(--glass-bg);max-width:calc(100% - 32px);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);box-shadow:var(--glass-edge), var(--glass-shadow);color:var(--ink);text-align:center;pointer-events:none;border-radius:16px;margin:0;padding:8px 14px;font-size:14px;position:absolute;bottom:64px;left:50%;transform:translate(-50%)}.jump-note:empty{-webkit-backdrop-filter:none;backdrop-filter:none;box-shadow:none;background:0 0;padding:0}.composer{margin:4px max(12px, env(safe-area-inset-right)) 0 max(12px, env(safe-area-inset-left));border-radius:28px;flex:none;grid-template-columns:minmax(0,1fr);gap:6px;padding:6px;display:grid}.composer[hidden]{display:none}.composer-mode{color:var(--primary);justify-content:space-between;align-items:center;padding-left:8px;font-size:14px;font-weight:600;display:flex}.composer-reply{gap:8px}.composer-reply>.text-btn{flex:none;min-width:44px}.composer-reply-body{min-width:0;display:grid}.composer-reply-body .quote-text{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:400;display:block;overflow:hidden}.composer-row{align-items:flex-end;gap:4px;display:flex}.composer-input{border:1px solid var(--control-line);background:var(--surface);resize:none;border-radius:22px;flex:1;min-width:0;min-height:44px;max-height:144px;padding:9px 14px;font-size:16px;line-height:1.5;overflow-y:auto}.send-btn{background:var(--primary);color:#fff;border:0;border-radius:50%;flex:none;place-items:center;width:44px;height:44px;display:grid}.send-btn:disabled{background:var(--line);color:var(--muted)}.composer>.field-error,.composer>.field-note{padding:0 8px}.photo-grid{gap:4px;width:min(240px,60vw);display:grid}.photo-grid:not([data-count="1"]){grid-template-columns:1fr 1fr}.photo-thumb{background:var(--line);border:0;border-radius:12px;padding:0;display:block;overflow:hidden}.photo-thumb img{object-fit:cover;width:100%;height:auto;max-height:320px;display:block}.photo-grid:not([data-count="1"]) .photo-thumb img{aspect-ratio:1;height:100%}.dialog-full{color:#fff;background:#0f1f1a;width:100%;max-width:100%;height:100%;max-height:100%;margin:0}.dialog-full .dialog-inner{gap:0;height:100%;padding:0}.viewer{flex-direction:column;height:100%;display:flex}.viewer-bar{padding:calc(6px + env(safe-area-inset-top)) 12px 6px;justify-content:space-between;align-items:center;gap:8px;display:flex}.viewer-count{font-variant-numeric:tabular-nums;font-size:14px}.viewer-save{border-radius:var(--radius-button);color:#fff;align-items:center;gap:6px;min-height:44px;padding:0 12px;font-size:15px;font-weight:600;text-decoration:none;display:inline-flex}.viewer-save:hover{background:#ffffff1f}.viewer-spacer{width:44px}.viewer-stage{flex:1;place-items:center;min-height:0;padding:0 8px;display:grid}.viewer-stage img{object-fit:contain;max-width:100%;max-height:100%}.viewer-error{text-align:center;color:#ffffffd9;padding:0 24px}.viewer-hint{text-align:center;color:#fffc;min-height:24px;padding:0 16px;font-size:13px}.viewer-nav{padding:4px 0 calc(8px + env(safe-area-inset-bottom));justify-content:center;gap:24px;display:flex}.tray{gap:6px;display:grid}.tray-list{gap:8px;margin:0;padding:4px 0;list-style:none;display:flex;overflow-x:auto}.tray-item{flex:none;gap:2px;width:76px;display:grid;position:relative}.tray-item img{color:#0000;object-fit:cover;background:var(--line);border-radius:10px;width:76px;height:76px;font-size:0}.tray-item[data-status=uploading] img{opacity:.55}.tray-item[data-status=failed] img{outline:2px solid var(--danger);outline-offset:-2px;opacity:.6}.tray-state{text-align:center;color:var(--ink);font-size:11px;font-weight:700;position:absolute;top:26px;left:0;right:0}.tray-state.is-failed{color:var(--danger)}.tray-actions{display:grid}.tray-btn{min-width:44px;min-height:44px;color:var(--primary);background:0 0;border:0;padding:0 2px;font-size:14px;font-weight:600}.segmented{margin:4px max(var(--gutter), env(safe-area-inset-right)) 8px max(var(--gutter), env(safe-area-inset-left));border-radius:22px;flex:none;padding:3px;display:flex}.compose .segmented{margin:0 0 16px}.segment{min-height:44px;color:var(--muted);background:0 0;border:0;border-radius:19px;flex:1;justify-content:center;align-items:center;gap:4px;padding:0 6px;font-size:15px;display:inline-flex}.segment[aria-pressed=true]{background:var(--primary);color:#fff;font-weight:600}.segment-count{font-size:12px;font-weight:700}.dashboard{align-content:start;gap:14px;display:grid}.lane{border:1px solid var(--envelope);border-radius:var(--radius-card);background:color-mix(in srgb, var(--paper) 45%, #fff);gap:6px;padding:14px 16px;display:grid}.lane-title{flex-wrap:wrap;justify-content:space-between;align-items:baseline;column-gap:8px;margin:0;font-size:17px;font-weight:600;display:flex}.lane-count{color:var(--primary);font-size:13px;font-weight:700}.lane-road{color:var(--muted);align-items:center;gap:10px;font-size:13px;display:flex}.lane-end{text-overflow:ellipsis;white-space:nowrap;flex:none;max-width:5em;overflow:hidden}.lane-track{flex:1;height:36px;position:relative}.lane-track:before{content:"";border-top:2px dashed var(--envelope);position:absolute;top:50%;left:0;right:0}.lane-envelope{top:50%;left:calc(var(--progress,0) * (100% - 44px));line-height:0;position:absolute;transform:translateY(-50%)}.lane-foot{align-items:center;gap:8px;display:flex}.lane-row{min-width:0;min-height:44px;color:var(--ink);word-break:keep-all;flex:1;align-items:center;font-weight:600;text-decoration:none;display:flex}.lane[data-direction=in] .lane-row[data-status=arrived]{color:var(--primary)}.lane-more{min-height:44px;color:var(--primary);flex:none;align-items:center;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.lane-idle{color:var(--muted);margin:0;font-size:15px}.box-links-title{margin:4px 0 2px;font-size:17px;font-weight:600}.box-links ul{margin:0;padding:0;list-style:none}.box-link{border-bottom:1px solid var(--envelope);min-height:48px;color:inherit;align-items:center;gap:8px;text-decoration:none;display:flex}.box-link-label{flex:1;font-weight:600}.box-link-new{color:var(--primary);font-size:13px;font-weight:700}.box-link-count{color:var(--muted);font-variant-numeric:tabular-nums}.box-link .icon{color:var(--muted)}.letter-list{margin:0;padding:0;list-style:none}.letter-card{border-bottom:1px solid var(--envelope);color:inherit;align-items:center;gap:14px;padding:16px 0;text-decoration:none;display:flex}.letter-card .tt-motion-transit{flex:none}.letter-card-body{flex:1;gap:2px;min-width:0;display:grid}.letter-card-title{font-weight:600}.letter-card-status{color:var(--muted);font-size:15px}.letter-card[data-box=received][data-status=arrived] .letter-card-status{color:var(--primary);font-weight:700}.letter-card-preview{white-space:nowrap;text-overflow:ellipsis;font-size:15px;overflow:hidden}.letter-card-date{color:var(--muted);font-size:13px}.countdown-time{font-variant-numeric:tabular-nums}.letter-detail{align-content:start;gap:20px;display:grid}.letter-meta{color:var(--muted);gap:2px;font-size:14px;display:grid}.letter-status{color:var(--ink);font-size:15px;font-weight:600}.letter-stage{gap:20px;display:grid;position:relative}.letter-paper{border:1px solid var(--envelope);background:color-mix(in srgb, var(--paper) 45%, #fff);border-radius:6px;gap:20px;width:100%;max-width:560px;margin:0 auto;padding:28px 24px 32px;display:grid}.letter-question{border-bottom:1px solid var(--envelope);gap:4px;padding-bottom:16px;display:grid}.letter-question p{overflow-wrap:anywhere;font-size:17px;font-weight:600;line-height:1.6}.letter-question-label{color:var(--muted);font-size:13px}.letter-question.is-editable{margin-bottom:16px}.letter-body{white-space:pre-wrap;overflow-wrap:anywhere;font-size:17px;line-height:1.9}.letter-paper .photo-grid{width:100%}.reply-btn{max-width:560px;margin:0 auto}.sealed{text-align:center;justify-items:center;gap:12px;padding:24px 0 8px;display:grid}.sealed-title{margin-top:8px;font-size:22px;font-weight:600;line-height:1.35}.sealed-count{font-size:18px;font-weight:600}.sealed-count 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