:root{color-scheme:light;--bg:#f5f7f4;--paper:#fff;--ink:#1d2924;--muted:#65716b;--line:#dfe6e0;--green:#28543d;--green-soft:#eaf1eb;--danger:#a23d32}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans KR",sans-serif}.site-header{height:64px;display:flex;align-items:center;max-width:760px;margin:0 auto;padding:0 22px}.brand{color:var(--green);font-weight:800;letter-spacing:.04em;text-decoration:none}.page-shell{width:min(100% - 32px,700px);margin:0 auto 60px}.intro{padding:43px 0 25px}.eyebrow{margin:0 0 10px;color:var(--green);font-size:14px;font-weight:750}.intro h1{max-width:660px;margin:0;font-size:clamp(30px,6vw,42px);line-height:1.27;letter-spacing:-.045em}.lede{margin:13px 0 0;color:var(--muted)}.card{background:var(--paper);border:1px solid var(--line);border-radius:18px;box-shadow:0 4px 16px rgb(24 45 33 / 3%)}.calculator{padding:26px}.form-heading{margin:0 0 19px;font-size:19px}.trip-fields{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field label{display:block;margin-bottom:6px;font-weight:700}.input-with-unit{display:flex;align-items:center;gap:10px}.input-with-unit input{width:100%;height:48px;padding:0 12px;border:1px solid #cbd5ce;border-radius:10px;background:#fff;color:var(--ink);font:inherit;font-size:18px}.input-with-unit span,.amount-wrap>span{color:var(--muted)}.field small{display:block;margin-top:5px;color:var(--muted);font-size:12px;min-height:19px}.costs-fieldset{min-width:0;margin:25px 0 0;padding:0;border:0}.costs-fieldset legend{width:100%;margin-bottom:10px;font-weight:750}.costs-fieldset legend span{margin-left:5px;color:var(--muted);font-size:12px;font-weight:400}.cost-list{border-top:1px solid var(--line)}.cost-row{padding:12px 0 8px;border-bottom:1px solid var(--line)}.cost-row>label{display:block;margin-bottom:6px;font-size:14px;font-weight:700}.cost-controls{display:grid;grid-template-columns:minmax(0,1fr) 154px;gap:9px}.amount-wrap{height:46px;display:flex;align-items:center;border:1px solid #cbd5ce;border-radius:10px;padding:0 12px}.amount-wrap:focus-within{border-color:var(--green);box-shadow:0 0 0 3px rgb(40 84 61 / 12%)}.amount-wrap input{width:100%;height:100%;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font:inherit;font-size:16px}.amount-wrap input::placeholder{color:#8b9690}.cost-controls select{min-width:0;height:46px;padding:0 10px;border:1px solid #cbd5ce;border-radius:10px;background:#fff;color:var(--ink);font:inherit;font-size:14px}.input-error{display:block;min-height:0;color:var(--danger);font-size:12px}.input-error:not(:empty){margin-top:5px}.scope-help{margin:10px 0 0;color:var(--muted);font-size:13px}calculate-button{width:100%;min-height:52px;margin-top:22px;border:0;border-radius:11px;background:var(--green);color:white;font:inherit;font-weight:750;cursor:pointer}.calculate-button:hover{background:#1f4431}.calculate-button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #739782;outline-offset:2px}.form-status{margin:10px 0 0;color:var(--danger);font-weight:650}.form-status:empty{display:none}.result{margin-top:18px;padding:26px}.result-kicker{margin:0;color:var(--muted);font-size:14px;font-weight:700}.planned-total{margin:4px 0 18px;font-size:clamp(32px,7vw,44px);line-height:1.2;letter-spacing:-.035em;overflow-wrap:anywhere}.per-person-results{display:grid;grid-template-columns:1fr 1fr;gap:10px}.per-person-results>div{min-width:0;padding:14px;border-radius:12px;background:#f5f8f5}.per-person-results span,.per-person-results small{display:block;color:var(--muted);font-size:13px}.per-person-results strong{display:block;margin:3px 0;font-size:22px;overflow-wrap:anywhere}.daily-note,.result-note{color:var(--muted);font-size:13px}.daily-note{margin:12px 0}.even-split{margin:12px 0 0;padding:12px 14px;border-left:3px solid #b7cabb;background:#f8faf8;font-size:14px}.breakdown-section{margin-top:24px}.breakdown-section h3{margin:0 0 12px;font-size:17px}.breakdown{display:grid;gap:12px;margin:0;padding:0;list-style:none}.breakdown-heading{display:flex;justify-content:space-between;gap:12px;font-size:14px}.breakdown-heading strong{white-space:nowrap}.bar-track{height:7px;margin-top:5px;border-radius:99px;background:#edf1ed;overflow:hidden}.bar-fill{display:block;height:100%;border-radius:inherit;background:#6b9275}.base-line{display:flex;justify-content:space-between;gap:12px;margin:13px 0 0;padding-top:11px;border-top:1px solid var(--line);font-size:14px}.calculation-details{margin-top:20px;padding-top:14px;border-top:1px solid var(--line)}.calculation-details summary{min-height:44px;display:flex;align-items:center;color:var(--green);font-weight:700;cursor:pointer}.calculation-details ul{padding-left:20px}.calculation-details li{margin:6px 0;font-size:14px}.calculation-details p{color:var(--muted);font-size:13px}.result-note{margin:18px 0 0;padding-top:14px;border-top:1px solid var(--line)}.travel-cta{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:18px 0;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:#fff;font-size:14px}.travel-cta>span{color:var(--muted)}.travel-cta a{color:var(--green);font-weight:700;text-decoration:none}.content-section{margin-top:26px;padding:22px 24px}.content-section h2,.faq-section h2{margin:0 0 9px;font-size:19px}.content-section p{margin:0;color:#49564e;font-size:14px}.faq-section{margin-top:28px}.faq-section h2{margin-bottom:10px}.faq-item{border-bottom:1px solid var(--line)}.faq-item summary{min-height:50px;display:flex;align-items:center;position:relative;padding:10px 32px 10px 2px;font-weight:650;cursor:pointer;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary::after{content:"＋";position:absolute;right:5px;color:var(--green)}.faq-item[open] summary::after{content:"−"}.faq-item p{margin:0;padding:0 20px 16px 2px;color:var(--muted);font-size:14px}.site-footer{max-width:700px;margin:0 auto;padding:18px 16px 30px;display:flex;justify-content:space-between;color:var(--muted);font-size:13px}.site-footer a{color:var(--green);font-weight:650}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.noscript-note{padding:12px;color:var(--danger)}[hidden]{display:none!important}
@media(max-width:520px){.site-header{height:58px;padding:0 16px}.page-shell{width:min(100% - 24px,700px)}.intro{padding:30px 2px 20px}.intro h1{font-size:32px}.lede{font-size:14px}.calculator,.result{padding:19px 16px}.trip-fields{gap:10px}.field small{font-size:11px;line-height:1.45}.costs-fieldset legend span{display:block;margin:2px 0 0}.cost-controls{grid-template-columns:minmax(0,1fr) 138px;gap:7px}.cost-controls select{padding:0 7px;font-size:13px}.amount-wrap{padding:0 9px}.per-person-results{gap:8px}.per-person-results>div{padding:11px}.per-person-results strong{font-size:19px}.travel-cta{align-items:flex-start;flex-direction:column;gap:3px}.content-section{padding:18px}.site-footer{padding-inline:12px}}
@media(max-width:350px){.intro h1{font-size:28px}.trip-fields{grid-template-columns:1fr}.field small{min-height:0}.cost-controls{grid-template-columns:minmax(0,1fr) 126px}.cost-controls select{font-size:12px}.per-person-results{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

.mode-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:0 0 18px;padding:5px;border:1px solid var(--line);border-radius:13px;background:#edf1ed}
.calculate-button{width:100%;min-height:52px;margin-top:22px;border:0;border-radius:11px;background:var(--green);color:#fff;font:inherit;font-weight:750;cursor:pointer}
.calculate-button:hover{background:#1f4431}
.calculate-button:focus-visible,a:focus-visible,summary:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #739782;outline-offset:2px}
.mode-tabs button,.split-tabs button{min-height:46px;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--ink);font:inherit;font-weight:700;cursor:pointer}
.mode-tabs button[aria-selected="true"],.split-tabs button.is-selected{border-color:#cbd8ce;background:#fff;color:var(--green);box-shadow:0 1px 3px rgb(24 45 33 / 8%)}
.mode-tabs button:focus-visible,.split-tabs button:focus-visible,.secondary-button:focus-visible,.text-button:focus-visible,.member-option:focus-within{outline:3px solid #739782;outline-offset:2px}
.settlement-section{margin-top:18px;padding:22px}
.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.section-heading h2{margin:0;font-size:19px}
.step-label{margin:0 0 3px;color:var(--green);font-size:11px;font-weight:800;letter-spacing:.06em}
.count-label{color:var(--muted);font-size:13px;white-space:nowrap}
.member-entry{display:grid;grid-template-columns:minmax(0,1fr) 88px;gap:8px}
.member-entry input,.expense-fields input,.expense-fields select{width:100%;min-width:0;min-height:46px;padding:9px 11px;border:1px solid #cbd5ce;border-radius:10px;background:#fff;color:var(--ink);font:inherit}
.member-entry input:focus-visible,.expense-fields input:focus-visible,.expense-fields select:focus-visible,.custom-share-input input:focus-visible{outline:3px solid #739782;outline-offset:2px}
.helper-text{margin:8px 0;color:var(--muted);font-size:13px}
.member-list,.member-options,.custom-share-list,.expense-list,.balance-list,.transfer-list{display:grid;gap:9px;margin:14px 0 0;padding:0;list-style:none}
.member-list{display:flex;flex-wrap:wrap;gap:8px}
.member-chip{min-height:44px;display:flex;align-items:center;gap:8px;padding:5px 7px 5px 13px;border:1px solid var(--line);border-radius:999px;background:#fff;font-weight:650}
.text-button{min-height:40px;padding:6px 10px;border:0;border-radius:8px;background:transparent;color:var(--green);font:inherit;font-size:13px;font-weight:700;cursor:pointer}
.text-button:hover{background:var(--green-soft)}
.primary-small{min-height:46px}
.secondary-button{min-height:44px;padding:9px 14px;border:1px solid #cbd5ce;border-radius:10px;background:#fff;color:var(--ink);font:inherit;font-weight:700;cursor:pointer}
.secondary-button:disabled,.calculate-button:disabled{opacity:.55;cursor:not-allowed}
.expense-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.expense-fields .field{min-width:0}
.expense-fields .field>label{display:block;margin-bottom:5px;font-weight:700}
.expense-fields .amount-wrap input{border:0;outline:0;background:transparent;padding:0}
.expense-fields small{display:block;margin-top:4px;color:var(--muted);font-size:12px}
.selection-fieldset,.split-fieldset{min-width:0;margin:18px 0 0;padding:0;border:0}
.selection-fieldset legend,.split-fieldset legend{width:100%;margin-bottom:7px;font-weight:750}
.selection-fieldset legend span{margin-left:5px;color:var(--muted);font-size:12px;font-weight:400}
.selection-actions{display:flex;gap:4px;margin:0 0 4px}
.member-options{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.member-option{position:relative;min-height:46px;display:flex;align-items:center;cursor:pointer}
.member-option input{position:absolute;width:1px;height:1px;opacity:0}
.member-option span{min-height:44px;display:flex;align-items:center;padding:8px 14px;border:1px solid #cbd5ce;border-radius:999px;background:#fff;color:var(--ink);font-weight:650}
.member-option input:checked+span{border-color:var(--green);background:var(--green-soft);color:var(--green)}
.member-option input:focus-visible+span{outline:3px solid #739782;outline-offset:2px}
.split-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.split-tabs button{border-color:#cbd5ce;background:#fff}
.custom-panel{margin-top:14px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#f9faf9}
.custom-panel h4{margin:0 0 10px;font-size:15px}
.custom-share-list{margin:0}
.custom-share-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(130px,200px);align-items:center;gap:12px;font-weight:650}
.custom-share-input{height:44px;display:flex;align-items:center;gap:8px;padding:0 10px;border:1px solid #cbd5ce;border-radius:9px;background:#fff}
.custom-share-input input{width:100%;min-width:0;height:100%;border:0;outline:0;background:transparent;color:var(--ink);font:inherit;text-align:right}
.custom-share-input>span{color:var(--muted);font-size:13px}
.custom-total,.custom-difference{margin:10px 0 0;font-size:13px;font-weight:650}
.custom-difference{color:var(--green)}
.custom-difference.is-error{color:var(--danger)}
.form-actions{display:grid;grid-template-columns:1fr auto;align-items:center;gap:8px}
.form-actions .calculate-button{margin-top:18px}
.form-actions .secondary-button{margin-top:18px}
.expense-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.expense-heading h4,.balance-card h4{margin:0;font-size:16px}
.expense-heading strong{white-space:nowrap}
.expense-card{padding:16px 18px}
.expense-card p{margin:6px 0 0;color:var(--muted);font-size:13px;overflow-wrap:anywhere}
.expense-actions{display:flex;gap:8px;margin-top:12px}
.danger-button{color:#8a352c;border-color:#ddc5c2}
.danger-button:hover{background:#fbf4f3}
.empty-state{margin:0;padding:16px;color:var(--muted);font-size:14px}
.balance-list{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:0}
.balance-card{padding:16px}
.balance-card p{margin:8px 0 0;color:var(--muted);font-size:13px}
.balance-card p strong{color:var(--ink)}
.balance-card .balance-label{margin-top:12px;padding-top:10px;border-top:1px solid var(--line);font-size:14px;font-weight:750}
.balance-label.is-credit{color:var(--green)}
.balance-label.is-debt{color:#8a352c}
.balance-label.is-even{color:var(--muted)}
.transfer-panel{margin-top:14px;padding:18px}
.transfer-panel h3{margin:0;font-size:17px}
.transfer-list{margin-top:10px}
.transfer-list li{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.transfer-list li:last-child{border-bottom:0}
.transfer-list span{white-space:nowrap;font-weight:750}
.settlement-footer{display:grid;justify-items:start;gap:12px;margin:20px 0 28px}
.privacy-note{margin:0;color:var(--muted);font-size:12px}
#storage-status:not(:empty){padding:8px 10px;border-radius:8px;background:#f2f5f2}
@media(max-width:520px){.settlement-section{padding:18px 16px}.expense-fields{grid-template-columns:1fr}.balance-list{grid-template-columns:1fr}.custom-share-row{grid-template-columns:minmax(0,1fr) minmax(120px,160px)}.transfer-list li{align-items:flex-start;flex-direction:column;gap:3px}}