:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans JP,Hiragino Kaku Gothic ProN,Meiryo,sans-serif;color:#173242;background:#f5f7f5;font-synthesis:none;text-rendering:optimizeLegibility;--navy: #173a4f;--deep-navy: #102d3e;--blue: #287b94;--ice: #e5f0f2;--coral: #e77a62;--cream: #f5f1e8;--ink: #173242;--muted: #687b85;--line: #d9e1e2;--white: #ffffff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;min-height:100vh}button,input,select,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit}.page-shell{min-height:100vh;background:#f7f8f6}.content-container{width:min(1120px,calc(100% - 48px));margin:0 auto}.content-container.narrow{width:min(680px,calc(100% - 40px));padding:68px 0 100px}.eyebrow{margin:0 0 12px;color:var(--blue);font:700 .72rem/1.2 DM Sans,sans-serif;letter-spacing:.18em}.eyebrow.light{color:#a9d1d9}.site-header{height:82px;padding:0 max(24px,calc((100vw - 1120px)/2));display:flex;align-items:center;justify-content:space-between;gap:24px;background:#fff;border-bottom:1px solid #e1e7e7}.brand{display:flex;align-items:center;gap:11px;text-decoration:none}.brand-mark{width:39px;height:39px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--navy);font-weight:700}.brand strong{display:block;font:700 .88rem/1.15 DM Sans,sans-serif;letter-spacing:.07em}.brand small{display:block;margin-top:3px;color:var(--muted);font-size:.66rem;letter-spacing:.08em}.header-actions{display:flex;align-items:center;gap:22px}.current-user{display:flex;align-items:center;gap:9px;font-size:.84rem;font-weight:600}.current-user small{display:block;color:#84949b;font-size:.59rem;font-weight:500}.user-dot{width:30px;height:30px;border-radius:50%;background:var(--ice);position:relative}.user-dot:before{content:"";position:absolute;width:8px;height:8px;left:11px;top:6px;border-radius:50%;background:var(--blue)}.user-dot:after{content:"";position:absolute;width:14px;height:7px;left:8px;bottom:6px;border-radius:10px 10px 6px 6px;background:var(--blue)}.text-link{font-size:.78rem;font-weight:600;text-underline-offset:4px;text-decoration-color:#aebcc1}.button{min-height:46px;border:0;border-radius:7px;padding:0 24px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font-weight:700;font-size:.88rem;text-decoration:none;transition:transform .15s,background .15s,opacity .15s}.button:hover:not(:disabled){transform:translateY(-1px)}.button:disabled{cursor:wait;opacity:.65}.button-primary{color:#fff;background:var(--navy);box-shadow:0 8px 20px #173a4f26}.button-primary:hover:not(:disabled){background:#22526b}.button-secondary{background:#edf1f1;color:var(--ink)}.button-ghost{background:transparent;border:1px solid #bdc9cc}.button-small{min-height:36px;padding:0 16px;font-size:.75rem}.button-wide{width:100%;margin-top:8px}.hero{overflow:hidden;position:relative;min-height:430px;background:var(--navy);color:#fff}.hero:before{content:"";position:absolute;width:720px;height:720px;right:-190px;top:-390px;border:1px solid rgba(255,255,255,.12);border-radius:50%;box-shadow:0 0 0 95px #ffffff06,0 0 0 190px #ffffff05}.hero:after{content:"";position:absolute;left:0;right:0;bottom:0;height:115px;opacity:.14;background:linear-gradient(150deg,transparent 0 22%,#9dced5 22.2% 27%,transparent 27.2% 40%,#9dced5 40.2% 47%,transparent 47.2% 62%,#9dced5 62.2% 68%,transparent 68.2%)}.hero-inner{width:min(1120px,calc(100% - 48px));min-height:430px;margin:0 auto;padding:70px 0 62px;display:flex;position:relative;z-index:1;align-items:center;justify-content:space-between;gap:80px}.hero h1{margin:0;font-size:clamp(2.4rem,5vw,4.15rem);line-height:1.22;letter-spacing:-.04em}.hero h1 em{color:#9ed2dc;font-style:normal}.hero-copy{margin:25px 0 0;color:#d4e4e7;font-size:.96rem;line-height:1.9}.hero-date-card{flex:0 0 310px;padding:32px 36px;border:1px solid rgba(255,255,255,.22);background:#ffffff0f;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.hero-date-card>span,.hero-date-card>small{display:block;font:600 .65rem/1.2 DM Sans,sans-serif;letter-spacing:.2em;color:#a9cbd1}.hero-date-card strong{display:flex;justify-content:space-between;align-items:baseline;margin:14px 0;font:600 2.2rem/1 DM Sans,sans-serif}.hero-date-card strong i{color:#a9cbd1;font-style:normal;font-size:.62rem;letter-spacing:.12em}.hero-date-card b{display:block;color:var(--coral);font-weight:400}.hero-date-card small{margin-top:27px}.home-content{padding:40px 0 96px}.members-row{margin-top:-1px;padding:42px 48px;display:flex;align-items:center;justify-content:space-between;gap:40px;background:#fff;box-shadow:0 12px 40px #14374814;position:relative;z-index:2}.members-row h2,.section-title h2{margin:4px 0 0;font-size:1.45rem}.section-number{margin:0;color:var(--coral);font:700 .7rem/1 DM Sans,sans-serif;letter-spacing:.12em}.member-list{display:flex;gap:32px}.member{text-align:center;min-width:60px}.member>span{width:42px;height:42px;margin:0 auto 8px;display:grid;place-items:center;border-radius:50%;background:var(--ice);color:var(--blue);font:600 .72rem DM Sans,sans-serif}.member strong{font-size:.82rem}.travel-section{padding-top:82px}.section-title{margin-bottom:28px;display:flex;align-items:flex-start;gap:20px}.section-title .section-number{padding-top:9px}.section-title p:last-child{margin:7px 0 0;color:var(--muted);font-size:.78rem}.flight-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.info-card{background:#fff;border:1px solid #e1e7e7;border-radius:3px}.flight-card{padding:26px 30px 22px}.card-label{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px}.card-label span{color:#fff;background:var(--blue);padding:4px 10px;border-radius:2px;font-size:.67rem;font-weight:700}.card-label strong{font:700 .85rem DM Sans,sans-serif;letter-spacing:.08em}.flight-route{padding:26px 0 21px;display:grid;grid-template-columns:1fr 1.4fr 1fr;align-items:center;text-align:center}.flight-route div>strong{display:block;font:600 1.7rem DM Sans,sans-serif}.flight-route div>span{display:block;margin-top:5px;font-size:.75rem;color:var(--muted)}.route-line{height:1px;background:#bfcdd0;position:relative}.route-line:before,.route-line:after{content:"";width:4px;height:4px;position:absolute;top:-2px;border-radius:50%;background:#9db1b6}.route-line:before{left:0}.route-line:after{right:0}.route-line span{position:absolute;left:50%;top:50%;transform:translate(-50%,-54%);margin:0!important;padding:0 8px;background:#fff;color:var(--coral)!important;font-size:1rem!important}.flight-card>p{margin:0;color:var(--muted);text-align:center;font-size:.72rem}.stay-timeline{display:grid;grid-template-columns:repeat(3,1fr);background:#fff;border:1px solid #e1e7e7}.stay-item{min-height:190px;padding:34px 28px;display:flex;gap:22px;border-right:1px solid var(--line)}.stay-item:last-child{border-right:0}.night-marker{flex:0 0 43px;height:62px;text-align:center;border-right:1px solid var(--line)}.night-marker span{display:block;color:var(--blue);font:500 1.8rem/1 DM Sans,sans-serif}.night-marker small{color:#95a4a9;font:600 .53rem DM Sans,sans-serif;letter-spacing:.1em}.stay-item p{margin:0 0 8px;color:var(--muted);font-size:.7rem}.stay-item h3{min-height:48px;margin:0 0 15px;font-size:.95rem;line-height:1.55}.tag{display:inline-block;color:var(--blue);background:var(--ice);padding:4px 9px;font-size:.62rem;font-weight:600}.tag.muted{color:#69787d;background:#edf0ef}.tools-section{margin-top:90px;padding:44px 48px 48px;position:relative;background:var(--deep-navy);color:#fff}.light-title .section-number{color:#ef927d}.light-title p:last-child{color:#9bb4bd}.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.tool-card{padding:23px;display:flex;align-items:center;gap:18px;text-align:left;text-decoration:none;color:#fff;border:1px solid rgba(255,255,255,.16);background:#ffffff0e;cursor:pointer;transition:background .15s,transform .15s}.tool-card:hover{background:#ffffff1a;transform:translateY(-2px)}.tool-icon{flex:0 0 43px;height:43px;display:grid;place-items:center;color:#a9d1d9;border:1px solid #638495;border-radius:50%;font:500 1.1rem DM Sans,sans-serif}.calendar-icon{border-radius:4px;font-size:.74rem}.tool-card>span:nth-child(2){flex:1}.tool-card strong,.tool-card small{display:block}.tool-card strong{font-size:.9rem;margin-bottom:5px}.tool-card small{color:#9fb6be;font-size:.7rem}.tool-card i{color:#a9d1d9;font-style:normal}.toast{position:fixed;left:50%;bottom:28px;z-index:10;transform:translate(-50%);width:min(460px,calc(100% - 32px));padding:15px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--ink);background:#fff;box-shadow:0 10px 40px #0b212d4d;border-left:4px solid var(--coral);font-size:.84rem}.toast button{border:0;background:none;color:#708187;cursor:pointer;font-size:1.3rem}footer{padding:34px 24px;text-align:center;color:#83949a;background:#eef1ef;font-size:.68rem}footer span{color:var(--navy);font:700 .7rem DM Sans,sans-serif;letter-spacing:.15em}footer p{margin:8px 0 0}.auth-layout{min-height:100vh;display:grid;grid-template-columns:minmax(420px,1.08fr) minmax(430px,.92fr);background:#fff}.auth-visual{min-height:650px;overflow:hidden;position:relative;display:flex;align-items:center;color:#fff;background:var(--navy)}.auth-visual:before{content:"";position:absolute;width:520px;height:520px;top:-230px;right:-120px;border-radius:50%;border:1px solid rgba(255,255,255,.13);box-shadow:0 0 0 65px #ffffff05,0 0 0 130px #ffffff04}.visual-content{width:min(560px,calc(100% - 90px));margin:0 auto;position:relative;z-index:2}.visual-content h1{margin:0;font-size:clamp(2.4rem,4vw,4rem);line-height:1.35;letter-spacing:-.04em}.visual-content>p:not(.eyebrow){margin:22px 0 35px;color:#c6dadd}.trip-date-badge{width:fit-content;padding:14px 20px;display:flex;align-items:baseline;gap:12px;border:1px solid rgba(255,255,255,.28)}.trip-date-badge span,.trip-date-badge small{color:#a9d1d9;font:600 .6rem DM Sans,sans-serif;letter-spacing:.13em}.trip-date-badge strong{font:600 1.45rem DM Sans,sans-serif}.mountains{position:absolute;height:30%;left:-2%;right:-2%;bottom:-2%;opacity:.17;background:linear-gradient(145deg,transparent 0 14%,#8bc2cd 14.2% 27%,transparent 27.2% 35%,#8bc2cd 35.2% 51%,transparent 51.2% 58%,#8bc2cd 58.2% 72%,transparent 72.2%)}.auth-panel{padding:50px;display:grid;place-items:center}.auth-card{width:min(400px,100%)}.auth-card h2{margin:0;font-size:2rem}.form-intro,.page-heading>p:last-child{margin:14px 0 30px;color:var(--muted);font-size:.84rem;line-height:1.7}.mobile-brand{display:none}.form-stack{display:grid;gap:20px}.field{display:grid;gap:8px}.field>span{font-size:.78rem;font-weight:600}.field input{width:100%;height:50px;padding:0 14px;color:var(--ink);background:#fff;border:1px solid #bcc9cc;border-radius:5px;outline:none;transition:border-color .15s,box-shadow .15s}.field input::placeholder{color:#9aa8ac}.field input:focus{border-color:var(--blue);box-shadow:0 0 0 3px #287b941f}.alert{border-radius:4px;font-size:.8rem;line-height:1.6}.alert-error{padding:12px 14px;color:#9d382b;background:#fff0ed;border:1px solid #f2c4bb}.page-heading{margin-bottom:34px}.page-heading h1{margin:0;font-size:2rem}.alert-required{margin-bottom:20px;padding:18px 20px;display:flex;gap:14px;color:#7b3d30;background:#fff0eb;border:1px solid #efb8aa}.alert-required p{margin:3px 0 0;font-size:.75rem}.alert-icon{flex:0 0 27px;height:27px;display:grid;place-items:center;color:#fff;background:var(--coral);border-radius:50%;font-weight:700}.form-card{padding:34px;background:#fff;border:1px solid #dfe5e5;box-shadow:0 8px 30px #1437480f}.security-note{margin-bottom:28px;padding:18px;display:flex;gap:14px;color:#174f62;background:#e9f4f5;border-left:4px solid var(--blue)}.security-note strong{font-size:.84rem}.security-note p{margin:5px 0 0;font-size:.74rem;line-height:1.7}.lock-icon{flex:0 0 28px;height:28px;display:grid;place-items:center;border:2px solid var(--blue);border-radius:5px;color:var(--blue);font-size:.45rem;position:relative;margin-top:8px}.lock-icon:before{content:"";width:13px;height:10px;position:absolute;left:5px;top:-10px;border:2px solid var(--blue);border-bottom:0;border-radius:9px 9px 0 0}.form-actions{margin-top:8px;display:flex;justify-content:flex-end;gap:12px}.loading-screen{min-height:100vh;display:grid;align-content:center;justify-items:center;gap:15px;color:var(--muted);background:#f7f8f6;font-size:.83rem}.loading-spinner{width:34px;height:34px;border:3px solid #dce6e8;border-top-color:var(--blue);border-radius:50%;animation:spin .75s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.warikan-hero{min-height:224px;overflow:hidden;position:relative;display:flex;align-items:center;color:#fff;background:var(--navy)}.warikan-hero:after{content:"";width:430px;height:430px;position:absolute;right:-105px;top:-275px;border:1px solid rgba(255,255,255,.12);border-radius:50%;box-shadow:0 0 0 70px #ffffff06,0 0 0 140px #ffffff05}.warikan-hero-inner{padding:48px 0;position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:40px}.warikan-hero h1{margin:0;font-size:clamp(2rem,4vw,3.05rem);letter-spacing:-.035em}.warikan-hero p:last-child{margin:14px 0 0;color:#c8dde1;font-size:.86rem;line-height:1.7}.warikan-add-button{min-height:54px;padding:0 28px;flex:0 0 auto;color:var(--navy);background:#fff;box-shadow:0 9px 25px #061c2833}.warikan-add-button span,.history-add-button span{margin-right:7px;font-size:1.15rem;font-weight:400}.warikan-content{padding:0 0 100px}.warikan-breadcrumb{padding:22px 0 4px;display:flex;gap:10px;color:#7a8b92;font-size:.69rem}.warikan-breadcrumb a{color:var(--blue);text-underline-offset:3px}.warikan-notice{margin:18px 0 -2px;padding:13px 15px;display:flex;align-items:center;gap:10px;color:#286347;background:#eaf6ef;border:1px solid #bfdcca;font-size:.8rem}.warikan-notice>span{width:20px;height:20px;display:grid;place-items:center;color:#fff;background:#3c8a62;border-radius:50%;font-size:.68rem}.warikan-notice button{margin-left:auto;border:0;color:#56806a;background:transparent;cursor:pointer;font-size:1.15rem}.warikan-load-error{margin-top:22px;display:flex;align-items:center;justify-content:space-between;gap:18px}.warikan-load-error .button{flex:0 0 auto;color:#7c3c31;border-color:#d8a59c}.warikan-loading{min-height:400px;display:grid;align-content:center;justify-items:center;gap:12px;color:var(--muted);font-size:.8rem}.warikan-section{padding-top:66px}.warikan-section-heading{margin-bottom:24px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px}.warikan-section-heading>div{display:flex;align-items:baseline;gap:17px}.warikan-section-heading h2{margin:0;font-size:1.42rem}.warikan-section-heading>p{margin:0;color:var(--muted);font-size:.72rem}.summary-scope-note{margin:-12px 0 22px;padding-left:14px;color:#667b84;border-left:3px solid #a8c9d0;font-size:.69rem;line-height:1.65}.warikan-empty{padding:38px;color:var(--muted);text-align:center;background:#fff;border:1px solid var(--line);font-size:.82rem}.balance-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px}.balance-card{min-width:0;padding:22px 20px 18px;background:#fff;border:1px solid var(--line);border-top:3px solid #9eacb0;box-shadow:0 5px 18px #14374809}.balance-card.balance-receive{border-top-color:#3c9a6c}.balance-card.balance-pay{border-top-color:#d96d5a}.balance-person{display:flex;align-items:center;gap:10px}.balance-person>span{width:34px;height:34px;display:grid;place-items:center;color:var(--blue);background:var(--ice);border-radius:50%;font-size:.75rem;font-weight:700}.balance-person strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.83rem}.balance-amount{min-height:75px;padding:18px 0 15px;display:flex;align-items:baseline;flex-wrap:wrap;gap:7px}.balance-amount strong{font:700 1.42rem/1 DM Sans,sans-serif;letter-spacing:-.02em}.balance-amount small{color:var(--muted);font-size:.65rem;font-weight:600}.balance-receive .balance-amount strong{color:#27815a}.balance-pay .balance-amount strong{color:#bf5545}.balance-even .balance-amount strong{color:#667a82}.balance-card dl{margin:0;padding-top:13px;border-top:1px solid #e4e9e9}.balance-card dl>div{margin-top:5px;display:flex;justify-content:space-between;color:#7c8c92;font-size:.64rem}.balance-card dt,.balance-card dd{margin:0}.balance-card dd{color:#50656e;font-weight:600}.settlement-list{overflow:hidden;background:#fff;border:1px solid var(--line)}.settlement-item{min-height:76px;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:25px;border-bottom:1px solid #e4e9e9}.settlement-item:last-child{border-bottom:0}.settlement-route{display:grid;grid-template-columns:minmax(90px,auto) 45px minmax(90px,auto);align-items:center}.settlement-route strong{font-size:.9rem}.settlement-route small{margin-left:2px;color:var(--muted);font-size:.64rem;font-weight:500}.settlement-route>span{color:var(--coral);text-align:center;font-size:1.2rem}.settlement-item>b{color:var(--navy);font:700 1.15rem DM Sans,sans-serif;white-space:nowrap}.settlement-complete{min-height:108px;padding:24px 30px;display:flex;align-items:center;justify-content:center;gap:17px;color:#2a6f4e;background:#edf7f1;border:1px solid #c6e0cf}.settlement-complete>span{width:38px;height:38px;display:grid;place-items:center;color:#fff;background:#49966c;border-radius:50%;font-weight:700}.settlement-complete strong{font-size:.9rem}.settlement-complete p{margin:4px 0 0;color:#61816f;font-size:.69rem}.history-section{padding-top:75px}.history-heading{align-items:center}.history-add-button{min-height:43px;padding:0 19px}.expense-groups{display:grid;gap:38px}.expense-group{min-width:0}.expense-group-heading{margin-bottom:12px;display:flex;align-items:center;justify-content:space-between;gap:20px}.expense-group-heading>div{min-width:0;display:flex;align-items:center;gap:11px}.expense-group-heading h3{margin:0;color:var(--navy);font-size:.92rem}.expense-group-heading p{margin:3px 0 0;color:var(--muted);font-size:.63rem}.expense-group-heading>strong{color:#789098;font:600 .66rem DM Sans,sans-serif}.expense-group-mark{width:34px;height:34px;flex:0 0 auto;display:grid;place-items:center;color:#fff;background:var(--blue);border-radius:50%;font-size:.62rem}.expense-group-mark.advance-mark{color:#755525;background:#f1deb5}.expense-group-empty{padding:27px;color:var(--muted);text-align:center;background:#fff;border:1px dashed #cbd5d6;font-size:.72rem}.expense-list{background:#fff;border:1px solid var(--line)}.advance-expense-list{border-top-color:#d9bd82}.expense-item{min-height:125px;padding:23px 22px;display:grid;grid-template-columns:112px minmax(0,1fr) auto;gap:22px;align-items:start;border-bottom:1px solid #e2e8e8}.advance-expense-item{min-height:145px}.expense-item:last-child{border-bottom:0}.expense-date{padding-top:3px;color:#7c8c92;font:600 .65rem DM Sans,sans-serif;letter-spacing:.04em}.expense-main{min-width:0}.expense-title-row{display:flex;align-items:baseline;justify-content:space-between;gap:20px}.expense-title-row h3{min-width:0;margin:0;overflow-wrap:anywhere;font-size:.94rem}.expense-title-row>strong{color:var(--navy);font:700 1.12rem DM Sans,sans-serif;white-space:nowrap}.expense-main>p{margin:8px 0 11px;color:var(--muted);font-size:.69rem}.expense-main>p b{color:#3b5865}.expense-participants{display:flex;align-items:center;flex-wrap:wrap;gap:5px}.expense-participants>span{margin-right:4px;color:#849399;font-size:.61rem}.expense-participants small{padding:3px 7px;color:#456672;background:var(--ice);font-size:.59rem}.advance-participants{margin-top:15px;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:7px}.advance-participants label{min-width:0;padding:9px 10px;display:grid;grid-template-columns:19px minmax(0,1fr) auto auto;align-items:center;gap:7px;color:#66777d;background:#f6f7f6;border:1px solid #d9dfdf;cursor:pointer;transition:background .15s,border-color .15s}.participant-share-amount{font-size:.64rem;font-weight:700;white-space:nowrap;color:#4a5a5f}.is-paid .participant-share-amount{color:#286347}.advance-participants label.is-paid{color:#286347;background:#eaf6ef;border-color:#a9d2ba}.advance-participants input{position:absolute;opacity:0;pointer-events:none}.payment-check{width:18px;height:18px;display:grid;place-items:center;color:#fff;background:#c1cbcd;border-radius:50%;font-size:.64rem;font-weight:700}.is-paid .payment-check{background:#3c8a62}.advance-participants strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.67rem}.advance-participants small{color:#849196;font-size:.56rem;white-space:nowrap}.advance-participants .is-paid small{color:#3c7b59}.advance-participants label:focus-within{outline:2px solid var(--blue);outline-offset:2px}.advance-participants label:has(input:disabled){cursor:wait;opacity:.65}.expense-actions{display:flex;align-items:center;gap:5px}.expense-actions button{min-height:32px;padding:0 10px;color:var(--blue);background:transparent;border:1px solid #c9d5d7;cursor:pointer;font-size:.65rem;font-weight:600}.expense-actions button:hover:not(:disabled){background:#eef5f6}.expense-actions button.delete-action{color:#b45142}.expense-actions button:disabled{cursor:wait;opacity:.55}.history-empty{padding:54px 30px}.history-empty>span{width:48px;height:48px;margin:0 auto 14px;display:grid;place-items:center;color:var(--blue);background:var(--ice);border-radius:50%;font-size:1.1rem}.history-empty strong{display:block;color:var(--ink);font-size:.9rem}.history-empty p{margin:8px 0 0;font-size:.7rem}.expense-modal-backdrop{position:fixed;inset:0;z-index:50;padding:24px;display:grid;place-items:center;overflow-y:auto;background:#091e29a3;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.expense-modal{width:min(660px,100%);max-height:calc(100vh - 48px);overflow-y:auto;background:#fff;box-shadow:0 20px 70px #05182259}.expense-modal-header{padding:25px 30px 20px;display:flex;align-items:flex-start;justify-content:space-between;border-bottom:1px solid var(--line)}.expense-modal-header .eyebrow{margin-bottom:7px;font-size:.59rem}.expense-modal-header h2{margin:0;font-size:1.38rem}.modal-close{width:38px;height:38px;padding:0;color:#6b7d84;background:#f0f3f2;border:0;border-radius:50%;cursor:pointer;font-size:1.45rem;font-weight:300}.expense-modal form{padding:25px 30px 30px}.expense-form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:19px 16px}.category-fieldset{min-width:0;margin:0;padding:0;grid-column:1 / -1;border:0}.category-fieldset legend{margin-bottom:8px;color:#3d5560;font-size:.72rem;font-weight:700}.category-fieldset legend i{margin-left:5px;color:var(--coral);font-size:.57rem;font-style:normal}.category-options{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.category-options label{min-width:0;padding:13px 14px;display:flex;align-items:center;gap:10px;color:#687a81;background:#f8f9f8;border:1px solid #d5dddd;cursor:pointer}.category-options label.selected{color:var(--navy);background:#edf6f7;border-color:#8db8c3}.category-options input{width:16px;height:16px;margin:0;flex:0 0 auto;accent-color:var(--blue)}.category-options span{min-width:0;display:grid;gap:3px}.category-options strong{font-size:.68rem}.category-options small{color:var(--muted);font-size:.57rem}.expense-description-field{grid-column:1 / -1}.expense-modal .field>span,.participant-fieldset legend{color:#3d5560;font-size:.72rem;font-weight:700}.expense-modal .field i,.participant-fieldset legend i{margin-left:5px;color:var(--coral);font-size:.57rem;font-style:normal}.expense-modal .field input,.expense-modal .field select{width:100%;height:48px;padding:0 13px;color:var(--ink);background:#fff;border:1px solid #bfcacc;border-radius:4px;outline:0}.expense-modal .field input:focus,.expense-modal .field select:focus{border-color:var(--blue);box-shadow:0 0 0 3px #287b941c}.yen-input{position:relative}.yen-input>span{position:absolute;left:14px;top:50%;z-index:1;transform:translateY(-50%);color:#677b84;font-weight:700}.yen-input input{padding-left:32px!important;font-weight:700!important}.participant-fieldset{min-width:0;margin:25px 0 0;padding:0;border:0}.participant-toolbar{margin:7px 0 10px;display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:.63rem}.participant-toolbar button{padding:4px 0;color:var(--blue);background:transparent;border:0;cursor:pointer;font-size:.64rem;font-weight:700;text-decoration:underline;text-underline-offset:3px}.participant-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:8px}.participant-grid label{min-width:0;padding:11px 8px;display:flex;align-items:center;gap:7px;color:#6f8087;background:#f8f9f8;border:1px solid #d9e0e0;cursor:pointer}.participant-grid label.selected{color:var(--navy);background:#edf6f7;border-color:#8db8c3}.participant-grid input{width:16px;height:16px;margin:0;accent-color:var(--blue)}.participant-grid label>span{width:25px;height:25px;flex:0 0 auto;display:grid;place-items:center;color:var(--blue);background:#dcecef;border-radius:50%;font-size:.58rem;font-weight:700}.participant-grid strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.68rem}.expense-form-error{margin-top:20px}.expense-form-actions{margin-top:25px;padding-top:20px;display:flex;justify-content:flex-end;gap:10px;border-top:1px solid var(--line)}.expense-submit{min-width:185px}.schedule-hero{min-height:224px;overflow:hidden;position:relative;display:flex;align-items:center;color:#fff;background:var(--navy)}.schedule-hero:after{content:"";position:absolute;width:520px;height:260px;right:-80px;bottom:-175px;border:1px solid rgba(255,255,255,.12);border-radius:50%;box-shadow:0 0 0 60px #ffffff06,0 0 0 120px #ffffff05}.schedule-hero-inner{padding:48px 0;position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:40px}.schedule-hero h1{margin:0;font-size:clamp(2rem,4vw,3.05rem);letter-spacing:-.035em}.schedule-hero p:last-child{margin:14px 0 0;color:#c8dde1;font-size:.86rem;line-height:1.7}.schedule-add-button{min-height:54px;padding:0 28px;flex:0 0 auto;color:var(--navy);background:#fff;box-shadow:0 9px 25px #061c2833}.schedule-add-button span{margin-right:7px;font-size:1.15rem;font-weight:400}.schedule-content{padding-bottom:100px}.schedule-days{padding-top:42px;display:grid;gap:46px}.schedule-day{min-width:0}.schedule-day-header{margin-bottom:14px;padding:0 3px;display:flex;align-items:flex-end;justify-content:space-between;gap:20px}.schedule-day-title{display:flex;align-items:center;gap:17px}.schedule-day-title>span{width:57px;height:57px;flex:0 0 auto;display:grid;place-items:center;color:#fff;background:var(--blue);border-radius:50%;font:700 .67rem/1 DM Sans,sans-serif;letter-spacing:.06em}.schedule-day-title h2{margin:0;color:var(--navy);font-size:1.42rem}.schedule-day-title p{margin:5px 0 0;color:var(--muted);font-size:.7rem}.schedule-day-add{padding:7px 2px;color:var(--blue);background:transparent;border:0;cursor:pointer;font-size:.72rem;font-weight:700}.schedule-day-add:hover{text-decoration:underline;text-underline-offset:4px}.schedule-day-add span{margin-right:3px;font-size:.9rem;font-weight:400}.schedule-empty{width:100%;min-height:128px;padding:25px;display:grid;place-items:center;align-content:center;gap:6px;color:var(--muted);background:#ffffffa3;border:1px dashed #c7d2d4;cursor:pointer}.schedule-empty:hover{color:var(--blue);background:#fff;border-color:#9dbbc2}.schedule-empty>span{font-size:1.3rem;font-weight:300}.schedule-empty strong{color:var(--ink);font-size:.8rem}.schedule-empty small{font-size:.64rem}.schedule-timeline{padding:9px 0 3px;background:#fff;border:1px solid var(--line);box-shadow:0 6px 22px #14374809}.schedule-item{min-height:116px;padding:21px 21px 21px 24px;display:grid;grid-template-columns:120px 28px minmax(0,1fr);align-items:stretch}.schedule-time{padding:5px 17px 0 0;color:var(--navy);text-align:right}.schedule-time time{font:700 .78rem/1.35 DM Sans,sans-serif;white-space:nowrap}.schedule-time.is-unscheduled time{color:#87969b;font-family:inherit;font-size:.65rem;font-weight:600;line-height:1.35}.schedule-marker{position:relative;display:flex;justify-content:center}.schedule-marker:before{content:"";width:1px;position:absolute;top:-30px;bottom:-30px;background:#cadadd}.schedule-item:first-child .schedule-marker:before{top:9px}.schedule-item:last-child .schedule-marker:before{bottom:calc(100% - 10px)}.schedule-marker>span{width:11px;height:11px;margin-top:7px;position:relative;z-index:1;background:#fff;border:3px solid var(--coral);border-radius:50%;box-shadow:0 0 0 4px #fff}.schedule-item-card{min-width:0;padding:1px 0 18px 16px;display:flex;justify-content:space-between;gap:24px;border-bottom:1px solid #e3e9e9}.schedule-item:last-child .schedule-item-card{padding-bottom:2px;border-bottom:0}.schedule-item-main{min-width:0}.schedule-item-main h3{margin:0;overflow-wrap:anywhere;color:var(--ink);font-size:.94rem;line-height:1.55}.schedule-location{margin:8px 0 0;display:flex;align-items:flex-start;gap:6px;color:var(--blue);font-size:.69rem;font-weight:600}.schedule-location>span{color:var(--coral)}.schedule-memo{max-width:680px;margin:10px 0 0;color:var(--muted);font-size:.69rem;line-height:1.75;white-space:pre-wrap;overflow-wrap:anywhere}.schedule-item-actions{flex:0 0 auto;display:flex;align-items:flex-start;gap:5px}.schedule-item-actions button{min-height:31px;padding:0 9px;color:var(--blue);background:transparent;border:1px solid #c9d5d7;cursor:pointer;font-size:.63rem;font-weight:600}.schedule-item-actions button:hover:not(:disabled){background:#eef5f6}.schedule-item-actions button:disabled{cursor:not-allowed;opacity:.35}.schedule-order-actions{display:flex;gap:3px;margin-right:3px}.schedule-order-actions button{width:31px;padding:0;font-size:.76rem}.schedule-item-actions button.schedule-delete-action{color:#b45142}.schedule-modal{width:min(720px,100%)}.schedule-form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:19px 16px}.schedule-modal .field>span{color:#3d5560;font-size:.72rem;font-weight:700}.schedule-modal .field i{margin-left:5px;color:var(--coral);font-size:.57rem;font-style:normal}.schedule-modal .field i.optional{color:#88979c;font-weight:500}.schedule-modal .field input,.schedule-modal .field select,.schedule-modal .field textarea{width:100%;padding:0 13px;color:var(--ink);background:#fff;border:1px solid #bfcacc;border-radius:4px;outline:0}.schedule-modal .field input,.schedule-modal .field select{height:48px}.schedule-modal .field textarea{min-height:108px;padding-top:12px;line-height:1.6;resize:vertical}.schedule-modal .field input:focus,.schedule-modal .field select:focus,.schedule-modal .field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px #287b941c}.schedule-title-field,.schedule-location-field,.schedule-memo-field{grid-column:1 / -1}@media(max-width:850px){.auth-layout{display:block;background:var(--navy);padding:30px 20px}.auth-visual{display:none}.auth-panel{min-height:calc(100vh - 60px);padding:35px 24px;background:#fff}.mobile-brand{margin-bottom:50px;display:flex;align-items:center;gap:10px;color:var(--navy);font:700 .8rem DM Sans,sans-serif;letter-spacing:.06em}.mobile-brand span{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--navy);font-family:Noto Sans JP}.site-header{height:auto;min-height:76px;padding:16px 24px}.current-user{display:none}.hero-inner{gap:35px}.hero-date-card{flex-basis:270px}.member-list{gap:15px}.members-row{padding:35px 28px}.stay-timeline{grid-template-columns:1fr}.stay-item{min-height:0;border-right:0;border-bottom:1px solid var(--line)}.stay-item:last-child{border-bottom:0}.stay-item h3{min-height:0}.balance-grid{grid-template-columns:repeat(2,1fr)}.schedule-item{grid-template-columns:105px 26px minmax(0,1fr)}.schedule-item-card{gap:18px}.schedule-item-actions{display:grid;grid-template-columns:repeat(2,auto)}.schedule-order-actions{grid-column:1 / -1;justify-content:flex-end;margin:0}}@media(max-width:680px){.content-container,.hero-inner{width:min(100% - 30px,1120px)}.site-header{align-items:flex-start}.brand small{display:none}.header-actions{gap:8px;flex-wrap:wrap;justify-content:flex-end}.text-link{width:100%;order:2;text-align:right;font-size:.68rem}.hero,.hero-inner{min-height:530px}.hero-inner{padding:55px 5px;flex-direction:column;align-items:stretch;justify-content:center;gap:38px}.hero-date-card{flex-basis:auto;width:100%;padding:24px}.hero-date-card strong{font-size:1.8rem}.home-content{padding-top:20px}.members-row{display:block;padding:28px 22px}.member-list{margin-top:26px;display:grid;grid-template-columns:repeat(5,1fr);gap:5px}.member{min-width:0}.member>span{width:36px;height:36px}.member strong{font-size:.68rem}.travel-section{padding-top:62px}.flight-grid,.tool-grid{grid-template-columns:1fr}.flight-card{padding:22px 20px}.tools-section{margin-top:65px;padding:34px 22px}.form-card{padding:24px 20px}.security-note{padding:15px}.form-actions{flex-direction:column-reverse}.form-actions .button{width:100%}.warikan-hero{min-height:245px}.warikan-hero-inner{padding:38px 0;align-items:stretch;flex-direction:column;gap:25px}.warikan-add-button{width:100%}.warikan-content{padding-bottom:70px}.warikan-section{padding-top:52px}.warikan-section-heading{margin-bottom:18px;align-items:flex-start}.warikan-section-heading>p{display:none}.balance-grid{grid-template-columns:1fr}.balance-card{padding:18px 18px 14px;display:grid;grid-template-columns:1fr auto;align-items:center;gap:0 15px}.balance-amount{min-height:0;padding:0;justify-content:flex-end}.balance-amount strong{font-size:1.25rem}.balance-card dl{grid-column:1 / -1;margin-top:15px;display:grid;grid-template-columns:1fr 1fr;gap:18px}.balance-card dl>div{margin:0}.settlement-item{padding:16px 17px}.settlement-route{grid-template-columns:minmax(70px,auto) 34px minmax(70px,auto)}.settlement-route strong{font-size:.78rem}.settlement-item>b{font-size:.98rem}.history-section{padding-top:58px}.history-add-button{padding:0 13px;font-size:.72rem}.expense-groups{gap:32px}.expense-item{padding:19px 16px;grid-template-columns:1fr auto;gap:9px 15px}.expense-date{grid-column:1 / -1;padding:0}.expense-title-row{display:block}.expense-title-row>strong{margin-top:5px;display:block}.expense-actions{flex-direction:column}.expense-actions button{min-width:48px}.advance-participants{grid-column:1 / -1;grid-template-columns:1fr}.expense-modal-backdrop{padding:0;place-items:end center}.expense-modal{width:100%;max-height:94vh;border-radius:12px 12px 0 0}.expense-modal-header{padding:21px 20px 17px}.expense-modal form{padding:21px 20px max(24px,env(safe-area-inset-bottom))}.expense-form-grid{grid-template-columns:1fr;gap:17px}.category-fieldset{grid-column:auto}.category-options{grid-template-columns:1fr}.expense-description-field{grid-column:auto}.participant-grid{grid-template-columns:repeat(2,1fr)}.expense-form-actions{flex-direction:column-reverse}.expense-form-actions .button{width:100%}.schedule-hero{min-height:245px}.schedule-hero-inner{padding:38px 0;align-items:stretch;flex-direction:column;gap:25px}.schedule-add-button{width:100%}.schedule-content{padding-bottom:70px}.schedule-days{padding-top:34px;gap:42px}.schedule-day-header{align-items:center}.schedule-day-title{gap:11px}.schedule-day-title>span{width:48px;height:48px;font-size:.6rem}.schedule-day-title h2{font-size:1.15rem}.schedule-day-add{font-size:.65rem}.schedule-item{min-height:0;padding:18px 15px;grid-template-columns:76px 20px minmax(0,1fr)}.schedule-time{padding-right:8px}.schedule-time time{font-size:.66rem;white-space:normal}.schedule-marker:before{top:-27px;bottom:-27px}.schedule-item-card{padding-left:10px;display:block}.schedule-item-actions{margin-top:15px;display:flex;flex-wrap:wrap}.schedule-order-actions{order:3;margin-left:auto}.schedule-form-grid{grid-template-columns:1fr;gap:17px}.schedule-title-field,.schedule-location-field,.schedule-memo-field{grid-column:auto}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}