:root{color:#16352e;font-synthesis:none;--ink:#173f35;--ink-soft:#567069;--paper:#f8f4e9;--paper-deep:#e8e0cf;--orange:#ee6b45;--orange-deep:#c94d2d;--mustard:#d5a93e;--line:#173f3524;--shadow:0 18px 48px #2b362724;background:#f3efe4;font-family:Noto Sans SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html{background:var(--paper)}body{background:linear-gradient(#173f3506 1px, transparent 1px), var(--paper);background-size:100% 28px;min-width:320px;min-height:100vh;margin:0}button,input,select,textarea{font:inherit}button{color:inherit}button,a{-webkit-tap-highlight-color:transparent}svg{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:1.25rem;height:1.25rem}.language-switcher{left:max(16px, env(safe-area-inset-left));bottom:max(18px, env(safe-area-inset-bottom));z-index:90;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#f8f4e9f0;border:1px solid #173f352e;border-radius:16px 5px 16px 16px;grid-template-columns:1fr 1fr;gap:3px;padding:4px;display:grid;position:fixed;box-shadow:0 10px 30px #173f3529}.language-switcher button{min-width:44px;min-height:36px;color:var(--ink-soft);letter-spacing:.04em;cursor:pointer;background:0 0;border:0;border-radius:11px 3px 11px 11px;padding:0 9px;font-size:.72rem;font-weight:700}.language-switcher button.is-active{color:var(--paper);background:var(--ink);box-shadow:0 5px 14px #173f3533}.language-switcher button:focus-visible{outline-offset:2px;outline:3px solid #ee6b4552}h1,h2,h3,p{margin-top:0}.app-shell{min-height:100vh;padding:0 18px 108px;overflow:hidden}.topbar,.detail-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;max-width:1120px;min-height:76px;margin:0 auto;display:flex}.wordmark{align-items:center;gap:10px;display:flex}.wordmark strong,.wordmark small{display:block}.wordmark strong{letter-spacing:.08em;font-size:1.03rem}.wordmark small{color:var(--ink-soft);letter-spacing:.08em;margin-top:2px;font-family:DM Serif Display,Georgia,serif;font-size:.76rem}.mini-mark,.brand-mark{color:var(--paper);background:var(--ink);border-radius:50%;place-items:center;display:grid}.mini-mark{width:36px;height:36px}.mini-mark svg{width:19px}.text-button,.back-button{cursor:pointer;background:0 0;border:0}.text-button{min-height:44px;color:var(--ink-soft)}.hero-copy,.trip-section,.trip-intro,.detail-tabs,.ledger-panel,.balance-panel{max-width:1120px;margin-left:auto;margin-right:auto}.hero-copy{padding:52px 2px 48px;position:relative}.hero-copy:after{content:"账";color:#173f350b;pointer-events:none;font-family:Noto Serif SC,serif;font-size:10rem;font-weight:700;line-height:1;position:absolute;top:22px;right:-16px}.eyebrow{color:var(--orange-deep);letter-spacing:.2em;margin-bottom:10px;font-size:.69rem;font-weight:700}.hero-copy h1,.login-card h1,.trip-intro h1{font-family:DM Serif Display,Noto Serif SC,Georgia,serif;font-weight:400}.hero-copy h1{letter-spacing:-.035em;margin-bottom:18px;font-size:clamp(2.55rem,11vw,5rem);line-height:1.03}.hero-copy>p:last-child{max-width:480px;color:var(--ink-soft);margin:0;font-size:.94rem;line-height:1.8}.section-heading{justify-content:space-between;align-items:end;margin-bottom:20px;display:flex}.section-heading .eyebrow{margin-bottom:4px}.section-heading h2{margin:0;font-family:DM Serif Display,Noto Serif SC,Georgia,serif;font-size:1.72rem;font-weight:400}.section-heading>span{color:var(--ink-soft);font-size:.82rem}.trip-grid{gap:14px;display:grid}.trip-card{text-align:left;width:100%;color:var(--ink);cursor:pointer;animation:.52s both card-in;animation-delay:var(--delay);background:linear-gradient(135deg,#ffffff7a,#0000 55%),#e8e0cf;border:1px solid #173f351f;border-radius:3px 22px 3px 3px;padding:20px;transition:transform .18s,box-shadow .18s;box-shadow:4px 6px #173f3514}.trip-card:active{transform:translateY(2px);box-shadow:2px 3px #173f3514}.trip-card-top{color:var(--ink-soft);align-items:center;gap:7px;font-size:.76rem;display:flex}.status-dot{background:var(--orange);border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 4px #ee6b451f}.status-dot.is-closed{box-shadow:none;background:#89928c}.trip-currency{color:var(--ink);letter-spacing:.08em;margin-left:auto;font-family:DM Serif Display,Georgia,serif}.trip-card h3{max-width:86%;margin:24px 0 8px;font-family:Noto Serif SC,Georgia,serif;font-size:1.45rem;line-height:1.28}.trip-card>p{color:var(--ink-soft);margin-bottom:25px;font-size:.79rem}.trip-card-footer{border-top:1px dashed #173f3533;grid-template-columns:64px 64px 1fr 36px;align-items:end;gap:8px;padding-top:15px;display:grid}.trip-card-footer strong,.trip-card-footer small{display:block}.trip-card-footer strong{text-overflow:ellipsis;white-space:nowrap;font-size:.9rem;overflow:hidden}.trip-card-footer small{color:var(--ink-soft);margin-top:3px;font-size:.67rem}.round-arrow{width:34px;height:34px;color:var(--paper);background:var(--ink);border-radius:50%;justify-self:end;place-items:center;display:grid}.round-arrow svg{width:16px}.empty-card,.empty-ledger{text-align:center;color:var(--ink-soft);border:1px dashed #173f3540;border-radius:18px;padding:36px 25px}.empty-card h3,.empty-ledger h3{color:var(--ink);margin:15px 0 7px}.empty-card p,.empty-ledger p{margin:0;line-height:1.7}.empty-stamp{width:70px;height:70px;color:var(--orange-deep);border:2px solid var(--orange);border-radius:50%;place-items:center;margin:0 auto;font-family:Noto Serif SC,serif;display:grid;transform:rotate(-8deg)}.floating-create{right:max(18px, env(safe-area-inset-right));bottom:max(20px, env(safe-area-inset-bottom));z-index:20;color:#fff;background:var(--orange);cursor:pointer;border:0;border-radius:28px 6px 28px 28px;align-items:center;gap:9px;min-height:56px;padding:0 20px;font-weight:700;display:flex;position:fixed;box-shadow:0 14px 34px #be44284d}.floating-create:active{transform:scale(.97)}.login-page{min-height:100vh;color:var(--paper);background:radial-gradient(circle at 15% 10%, #d5a93e33, transparent 30%), var(--ink);place-items:center;padding:24px;display:grid;position:relative;overflow:hidden}.login-page:before{content:"";opacity:.12;background-image:repeating-linear-gradient(118deg,#0000 0 17px,#ffffff29 18px);position:absolute;inset:0}.paper-orbit{border:1px solid #f8f4e924;border-radius:50%;position:absolute}.orbit-one{width:380px;height:380px;top:-180px;right:-140px}.orbit-two{width:280px;height:280px;bottom:-170px;left:-130px}.login-card{z-index:1;width:min(100%,400px);animation:.65s both rise-in;position:relative}.brand-mark{width:64px;height:64px;color:var(--ink);background:var(--mustard);margin-bottom:35px;transform:rotate(-5deg)}.brand-mark svg{width:31px;height:31px}.login-card .eyebrow{color:#e8c469}.login-card h1{margin-bottom:12px;font-size:4.3rem;line-height:.95}.login-lead{color:#f8f4e9b3;margin-bottom:42px;line-height:1.8}.login-card label,.sheet-form label{gap:8px;font-size:.8rem;font-weight:600;display:grid}input,select,textarea{width:100%;min-height:48px;color:var(--ink);background:#ffffffb8;border:1px solid #173f352e;border-radius:10px 3px 10px 10px;outline:none;padding:0 13px;transition:border-color .16s,box-shadow .16s}textarea{resize:vertical;min-height:82px;padding-top:12px}input:focus,select:focus,textarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px #ee6b4521}.login-card input{color:var(--paper);background:#f8f4e914;border-color:#f8f4e947}.login-card input::placeholder{color:#f8f4e961}.primary-button,.secondary-button,.small-outline-button{cursor:pointer;border:0;border-radius:12px 3px 12px 12px;justify-content:center;align-items:center;gap:8px;min-height:50px;font-weight:700;display:flex}.primary-button{color:#fff;background:var(--orange);box-shadow:0 10px 22px #c94d2d33}.login-card .primary-button{color:var(--ink);background:var(--mustard);margin-top:20px}.primary-button:disabled{opacity:.56;cursor:wait}.wide{width:100%}.login-note{color:#f8f4e973;text-align:center;letter-spacing:.06em;margin:28px 0 0;font-size:.69rem}.form-error{color:#d94b38;margin:9px 0 0;font-size:.8rem}.login-card .form-error{color:#ffc3af}.full-loader{min-height:100vh;color:var(--ink-soft);place-content:center;justify-items:center;display:grid}.spinner{border:3px solid #173f3526;border-top-color:var(--orange);border-radius:50%;width:34px;height:34px;animation:.7s linear infinite spin}.full-loader p{margin-top:15px;font-size:.82rem}.sheet-backdrop{z-index:100;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#071e1994;justify-content:center;align-items:end;padding-top:40px;animation:.18s both fade-in;display:flex;position:fixed;inset:0}.bottom-sheet{width:min(100%,600px);max-height:calc(100vh - 36px);padding:9px 20px calc(24px + env(safe-area-inset-bottom));background:linear-gradient(#173f3506 1px, transparent 1px), var(--paper);background-size:100% 28px;border-radius:24px 24px 0 0;animation:.28s cubic-bezier(.2,.8,.2,1) both sheet-up;overflow-y:auto;box-shadow:0 -20px 60px #0000003d}.sheet-handle{background:#173f3533;border-radius:2px;width:42px;height:4px;margin:0 auto 18px}.sheet-header{justify-content:space-between;align-items:start;margin-bottom:24px;display:flex}.sheet-header .eyebrow{margin-bottom:4px}.sheet-header h2{margin:0;font-family:DM Serif Display,Noto Serif SC,Georgia,serif;font-size:1.8rem;font-weight:400}.icon-button{width:44px;height:44px;color:var(--ink-soft);border:1px solid var(--line);cursor:pointer;background:0 0;border-radius:50%;font-size:1.7rem}.sheet-form{gap:18px;display:grid}.two-column{grid-template-columns:1fr 1fr;gap:10px;display:grid}.amount-field{border-bottom:2px solid var(--ink);align-items:baseline;gap:12px;padding:4px 0 14px;display:flex}.amount-field span{color:var(--ink-soft);font-family:DM Serif Display,Georgia,serif}.amount-field input{min-height:auto;box-shadow:none;background:0 0;border:0;border-radius:0;padding:0;font-family:DM Serif Display,Georgia,serif;font-size:3.1rem;line-height:1}fieldset{border:0;min-width:0;margin:0;padding:0}legend{margin-bottom:11px;font-size:.8rem;font-weight:700}.member-check-grid{scrollbar-width:none;gap:8px;padding-bottom:5px;display:flex;overflow-x:auto}.member-check{min-width:76px;min-height:76px;color:var(--ink-soft);border:1px solid var(--line);background:#ffffff73;border-radius:15px 4px 15px 15px;place-items:center;gap:4px;padding:8px;font-size:.72rem;display:grid}.member-check span{width:31px;height:31px;color:var(--paper);background:var(--ink-soft);border-radius:50%;place-items:center;font-weight:700;display:grid}.member-check.is-selected{color:var(--ink);border-color:var(--mustard);background:#d5a93e2b}.member-check.is-selected span{background:var(--orange)}.segmented-control{background:var(--paper-deep);border-radius:11px;grid-template-columns:1fr 1fr;padding:3px;display:grid}.segmented-control button{background:0 0;border:0;border-radius:8px;min-height:40px;font-size:.78rem}.segmented-control button.is-active{background:var(--paper);font-weight:700;box-shadow:0 3px 10px #173f3517}.share-preview{margin-top:8px}.share-preview label{border-bottom:1px dashed var(--line);flex-direction:row;justify-content:space-between;align-items:center;min-height:45px;display:flex}.share-preview input{text-align:right;width:110px;min-height:38px}.repayment-route{text-align:center;background:var(--paper-deep);border-radius:16px 4px 16px 16px;grid-template-columns:1fr 50px 1fr;align-items:center;padding:20px;display:grid}.repayment-route span{color:var(--orange)}.detail-header{min-height:68px}.detail-actions{align-items:center;gap:7px;display:flex}.back-button{align-items:center;gap:7px;min-height:44px;padding:0;font-size:.8rem;display:flex}.small-outline-button{border:1px solid var(--line);background:0 0;min-height:40px;padding:0 13px;font-size:.76rem}.share-copy-button{width:42px;padding:0;font-size:0}.share-copy-button svg{width:18px}.public-header{border-bottom:0}.read-only-badge{color:var(--ink-soft);background:var(--paper-deep);letter-spacing:.08em;border-radius:12px 3px 12px 12px;padding:6px 10px;font-size:.7rem;font-weight:700}.share-notice{color:#76542e;background:#d5a93e29;border:1px solid #a47a2733;border-radius:4px 14px 4px 4px;align-items:center;gap:9px;max-width:1120px;min-height:45px;margin:0 auto 3px;padding:9px 12px;font-size:.7rem;line-height:1.45;display:flex}.share-notice svg{color:var(--orange-deep);flex:none}.trip-intro{justify-content:space-between;align-items:end;padding:36px 0 27px;display:flex}.trip-intro h1{max-width:700px;margin-bottom:8px;font-size:clamp(2.1rem,9vw,4rem);line-height:1.05}.trip-intro>div>p:last-child{color:var(--ink-soft);margin:0;font-size:.78rem}.member-stack{display:none}.detail-tabs{border-bottom:1px solid var(--line);grid-template-columns:1fr 1fr;margin-bottom:24px;display:grid}.detail-tabs button{min-height:50px;color:var(--ink-soft);cursor:pointer;background:0 0;border:0;font-size:.85rem;position:relative}.detail-tabs button span{background:var(--paper-deep);border-radius:10px;place-items:center;min-width:20px;height:20px;margin-left:5px;font-size:.68rem;display:inline-grid}.detail-tabs button.is-active{color:var(--ink);font-weight:700}.detail-tabs button.is-active:after{content:"";background:var(--orange);border-radius:3px 3px 0 0;height:3px;position:absolute;bottom:-1px;left:12%;right:12%}.day-total,.balance-hero{color:var(--paper);background:radial-gradient(circle at 100% 0, #d5a93e47, transparent 36%), var(--ink);box-shadow:var(--shadow);border-radius:4px 24px 4px 4px;padding:24px}.day-total span,.day-total strong,.day-total small,.balance-hero p,.balance-hero strong,.balance-hero small{display:block}.day-total span,.balance-hero p{color:#f8f4e9a6;margin-bottom:6px;font-size:.75rem}.day-total strong,.balance-hero strong{font-family:DM Serif Display,Georgia,serif;font-size:2.45rem;font-weight:400}.day-total small,.balance-hero small{color:#f8f4e980;margin-top:5px}.expense-timeline,.balance-list{margin-top:24px}.expense-card{border-bottom:1px solid var(--line);grid-template-columns:42px 1fr;gap:12px;padding:17px 0;display:grid}.expense-card.is-editable{cursor:pointer;touch-action:manipulation;transition:background .14s,transform .14s}.expense-card.is-editable:focus-visible{outline-offset:3px;border-radius:9px;outline:3px solid #ee6b4547}.expense-card.is-editable:active{background:#173f350b;transform:translateY(1px)}@media (hover:hover){.expense-card.is-editable:hover{background:#173f3509}}.expense-card.is-voided{opacity:.48}.category-mark{color:#fff;background:var(--ink);border-radius:50% 50% 9px;place-items:center;width:42px;height:42px;font-weight:700;display:grid}.category-mark.is-food{background:#d55e38}.category-mark.is-transport{background:#2f6f6c}.category-mark.is-lodging{background:#897048}.category-mark.is-tickets{background:#8b5c72}.category-mark.is-shopping{background:#65784a}.expense-title-row{justify-content:space-between;align-items:start;gap:10px;display:flex}.expense-title-row h3{margin-bottom:4px;font-size:.94rem}.expense-title-row p{color:var(--ink-soft);margin:0;font-size:.7rem}.expense-title-row>strong{flex:none;font-family:DM Serif Display,Georgia,serif;font-size:1rem}.share-chips{flex-wrap:wrap;gap:5px;margin-top:12px;display:flex}.share-chips span{color:var(--ink-soft);background:var(--paper-deep);border-radius:6px;padding:4px 7px;font-size:.65rem}.void-expense-zone{border-top:1px solid var(--line);margin-top:20px;padding-top:18px}.void-expense-trigger{min-height:42px;color:var(--ink-soft);text-underline-offset:4px;cursor:pointer;background:0 0;border:0;margin:0 auto;padding:0 12px;font-size:.68rem;-webkit-text-decoration:underline #173f3547;text-decoration:underline #173f3547;display:block}.void-expense-trigger:hover{color:var(--orange-deep)}.void-expense-trigger:focus-visible,.confirm-void-button:focus-visible{outline-offset:3px;outline:3px solid #ee6b453d}.void-confirmation{background:#ee6b4512;border:1px solid #c94d2d40;border-radius:4px 14px 14px;padding:16px}.void-confirmation strong{color:var(--orange-deep);font-size:.82rem;display:block}.void-confirmation p{color:var(--ink-soft);margin:6px 0 14px;font-size:.7rem;line-height:1.55}.void-confirmation-actions{grid-template-columns:1fr 1fr;gap:10px;display:grid}.void-confirmation-actions .secondary-button,.confirm-void-button{cursor:pointer;border-radius:10px 3px 10px 10px;min-height:44px;margin:0;font-weight:700}.confirm-void-button{color:#fff;background:var(--orange-deep);border:1px solid var(--orange-deep)}.void-confirmation-actions button:disabled{opacity:.56;cursor:wait}.void-label{margin-top:9px;font-size:.69rem;display:inline-block}.empty-ledger{margin-top:28px}.empty-ledger>svg{width:38px;height:38px;color:var(--orange)}.balance-hero{text-align:center}.balance-hero p{margin-bottom:5px}.balance-row{border-bottom:1px solid var(--line);grid-template-columns:40px 1fr auto;align-items:center;gap:11px;min-height:70px;display:grid}.avatar{width:40px;height:40px;color:var(--paper);background:var(--ink-soft);border-radius:50%;place-items:center;font-weight:700;display:grid}.balance-row h3{margin-bottom:3px;font-size:.88rem}.balance-row p{color:var(--ink-soft);margin:0;font-size:.64rem}.balance-row>strong{font-family:DM Serif Display,Georgia,serif;font-size:.92rem}.positive{color:#1c7962}.negative{color:var(--orange-deep)}.settlement-card{border:1px solid var(--line);background:#ebe3d3;border-radius:4px 22px 4px 4px;margin-top:34px;padding:22px 18px}.section-heading.compact{align-items:start;margin-bottom:12px}.section-heading.compact h2{font-size:1.5rem}.transfer-row{border-bottom:1px dashed #173f3533;grid-template-columns:1fr auto;gap:8px;padding:14px 0;display:grid}.transfer-people{align-items:center;gap:7px;font-size:.82rem;display:flex}.transfer-people span{color:var(--orange);place-items:center;display:grid}.transfer-people svg{width:17px}.transfer-row>strong{font-family:DM Serif Display,Georgia,serif}.transfer-row>button{min-height:34px;color:var(--orange-deep);background:#ee6b4514;border:1px solid #ee6b4540;border-radius:17px;grid-column:1/-1;justify-self:start;padding:0 12px;font-size:.7rem}.secondary-button{background:0 0;border:1px solid #173f354d;margin-top:18px}.settled-empty{text-align:center;justify-items:center;padding:26px 8px 12px;display:grid}.settled-empty span{color:#fff;background:#3a806c;border-radius:50%;place-items:center;width:45px;height:45px;display:grid}.settled-empty p{max-width:250px;color:var(--ink-soft);margin:13px 0 0;font-size:.78rem;line-height:1.6}.toast{left:50%;bottom:calc(88px + env(safe-area-inset-bottom));z-index:200;color:#fff;background:var(--ink);min-width:min(320px,100vw - 36px);box-shadow:var(--shadow);text-align:center;border-radius:9px;padding:13px 18px;font-size:.8rem;animation:.22s both toast-in;position:fixed;transform:translate(-50%)}.toast.is-error{background:#a53e2d}.public-footer{max-width:1120px;color:var(--ink-soft);border-top:1px solid var(--line);text-align:center;letter-spacing:.08em;margin:40px auto 0;padding:22px 0;font-family:DM Serif Display,Georgia,serif;font-size:.75rem}.public-error-page{text-align:center;place-content:center;justify-items:center;min-height:100vh;padding:30px;display:grid}.public-error-page .brand-mark{margin-bottom:24px}.public-error-page h1{margin-bottom:10px;font-family:DM Serif Display,Noto Serif SC,Georgia,serif;font-size:2.2rem;font-weight:400}.public-error-page>p:last-child{color:var(--ink-soft)}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fade-in{0%{opacity:0}}@keyframes rise-in{0%{opacity:0;transform:translateY(18px)}}@keyframes sheet-up{0%{transform:translateY(100%)}}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,8px)}}@keyframes card-in{0%{opacity:0;transform:translateY(12px)}}@media (width>=720px){.app-shell{padding-left:36px;padding-right:36px}.trip-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-copy{padding-top:74px}.member-stack{padding-right:8px;display:flex}.share-copy-button{width:auto;padding:0 13px;font-size:.76rem}.member-stack span{width:43px;height:43px;color:var(--paper);background:var(--ink);border:3px solid var(--paper);border-radius:50%;place-items:center;margin-right:-8px;font-size:.75rem;font-weight:700;display:grid}.ledger-panel,.balance-panel{grid-template-columns:290px minmax(0,1fr);align-items:start;gap:35px;display:grid}.expense-timeline,.balance-list{margin-top:0}.settlement-card{grid-column:2;margin-top:0}.balance-panel{grid-template-columns:290px minmax(0,1fr)}.balance-list,.balance-panel .settlement-card{grid-column:2}.floating-create{right:38px}.language-switcher{bottom:22px;left:36px}}@media (width>=1050px){.trip-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.floating-create{right:calc(50vw - 560px)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}
