.calc{--surface:#ffffff;--cchip-line:#c9d6e0;--user-bg:#1b4f72;--user-ink:#ffffff;--accent:#1b4f72;--amber:#c8801a;--amber-soft:#fdf1dc;--amber-ink:#8a5510;--seg1:#1b4f72;--seg2:#3f7fab;--seg3:#7fb0d1;--seg4:#bcd4e5;--seg-common:#d3d9df;box-sizing:border-box;font-size:16px;line-height:1.55;color:var(--ink)}.calc *,.calc *:before,.calc *:after{box-sizing:border-box}.calc .app{height:min(82dvh,780px);min-height:560px;max-width:620px;margin-inline:auto;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}.calc .log{position:relative}@media(max-width:639px){.calc .app{height:calc(100dvh - 150px);min-height:520px;border-radius:18px}}.calc [hidden]{display:none!important}.calc button{font:inherit;color:inherit}.calc .num{direction:ltr;unicode-bidi:isolate;display:inline-block;white-space:nowrap}.calc :focus-visible{outline:3px solid var(--accent);outline-offset:2px}.calc .composer:focus{outline:none}.calc .top{display:flex;align-items:center;gap:12px;padding:10px 16px;min-height:62px;border-bottom:1px solid var(--line);background:var(--surface)}.calc .top__mark{width:32px;height:32px;flex:none}.calc .top__txt{flex:1;min-width:0;line-height:1.25}.calc .top__title{font-weight:700;font-size:1.05rem;color:var(--ink);letter-spacing:-.01em}.calc .top__sub{font-size:.875rem;color:var(--ink-soft)}.calc .ciconbtn{width:44px;height:44px;flex:none;display:grid;place-items:center;border-radius:50%;border:1px solid var(--cchip-line);background:transparent;color:var(--navy);cursor:pointer}.calc .ciconbtn svg{width:20px;height:20px}.calc .progress{display:flex;gap:4px;padding:8px 16px 9px;background:var(--surface)}.calc .progress>span{flex:1;height:5px;border-radius:999px;background:var(--line);transition:background-color .25s ease,opacity .25s ease}.calc .progress>span.is-done{background:var(--navy)}.calc .progress>span.is-cur{background:var(--navy);opacity:.35}.calc .proto{display:flex;align-items:center;gap:8px;padding:6px 16px;background:var(--amber-soft);color:var(--amber-ink);font-size:.875rem;font-weight:500;border-bottom:1px solid var(--line)}.calc .proto svg{width:14px;height:14px;flex:none}.calc .log{flex:1;overflow-y:auto;overscroll-behavior:contain;padding:18px 16px 10px;display:flex;flex-direction:column;gap:10px;background:var(--surface)}.calc .msg{display:flex}.calc .msg--bot{justify-content:flex-start}.calc .msg--user{justify-content:flex-end}.calc .msg--wide{display:block}.calc .bubble{max-width:86%;padding:10px 15px;border-radius:18px;font-size:1rem;line-height:1.5}.calc .msg--bot .bubble{background:var(--navy-soft);color:var(--ink);border-end-start-radius:6px}.calc .bubble small{display:block;margin-top:2px;font-size:.85rem;color:var(--ink-soft)}.calc .msg--user .bubble{background:var(--user-bg);color:var(--user-ink);border-end-end-radius:6px;border:0;cursor:pointer;text-align:start;display:inline-flex;align-items:center;gap:8px}.calc .msg--user .bubble svg{width:13px;height:13px;opacity:.75;flex:none}.calc .typing{display:inline-flex;gap:5px;padding:14px 16px}.calc .typing i{width:7px;height:7px;border-radius:50%;background:var(--ink-soft);opacity:.45;animation:blink 1.1s infinite ease-in-out}.calc .typing i:nth-child(2){animation-delay:.18s}.calc .typing i:nth-child(3){animation-delay:.36s}@keyframes blink{0%,80%,to{opacity:.3}40%{opacity:.9}}.calc .composer{border-top:1px solid var(--line);background:var(--surface);padding:12px 16px calc(14px + env(safe-area-inset-bottom,0px));max-height:52%;overflow-y:auto}@media(min-width:640px){.calc .composer{padding-bottom:14px}}.calc .composer:empty:not(.is-hold){display:none}.calc .composer__row{display:flex;flex-wrap:wrap;gap:8px}.calc .composer__back{display:inline-flex;align-items:center;gap:6px;margin-top:6px;padding:6px 12px;min-height:44px;background:none;border:0;cursor:pointer;color:var(--ink-soft);font-size:.85rem}.calc .composer__back svg{width:14px;height:14px}.calc .cchip{min-height:48px;padding:0 18px;border-radius:999px;border:1.5px solid var(--cchip-line);background:var(--surface);color:var(--navy);font-weight:600;font-size:.98rem;cursor:pointer;transition:background-color .15s,border-color .15s,color .15s,transform .1s}.calc .cchip:active{transform:translateY(1px)}.calc .cchip[aria-pressed=true]{background:var(--navy);border-color:var(--navy);color:var(--surface)}@media(hover:hover)and (pointer:fine){.calc .cchip:hover{border-color:var(--navy);background:var(--navy-soft)}.calc .cchip[aria-pressed=true]:hover{background:var(--navy)}}.calc .cbtn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:54px;padding:0 26px;border-radius:999px;font-size:1.05rem;font-weight:700;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:background-color .15s,border-color .15s,transform .1s}.calc .cbtn:active{transform:translateY(1px)}.calc .cbtn--primary{background:var(--navy);color:var(--surface);border-color:var(--navy)}.calc .cbtn--wa{background:var(--wa);color:var(--wa-ink, #0b3b23);border-color:transparent;box-shadow:0 6px 18px #25d36647}.calc .cbtn--ghost{background:transparent;color:var(--navy);border-color:var(--cchip-line)}.calc .cbtn--sm{min-height:44px;padding:0 18px;font-size:.95rem}.calc .cbtn--full{width:100%}.calc .cbtn svg{width:22px;height:22px;flex:none}@media(hover:hover)and (pointer:fine){.calc .cbtn--wa:hover{background:var(--wa-dark)}.calc .cbtn--ghost:hover{border-color:var(--navy)}.calc .cbtn--primary:hover{filter:brightness(1.08)}}.calc .stepper{display:flex;align-items:center;justify-content:center;gap:14px;margin-bottom:12px}.calc .stepper__btn{width:52px;height:52px;border-radius:50%;border:1.5px solid var(--cchip-line);background:var(--surface);color:var(--navy);font-size:1.6rem;line-height:1;font-weight:500;cursor:pointer;display:grid;place-items:center}.calc .stepper__btn:disabled{opacity:.35;cursor:default}.calc .stepper__field{text-align:center}.calc .stepper__field input{width:96px;height:52px;border:0;border-bottom:2px solid var(--navy);background:transparent;color:var(--ink);font-family:inherit;font-weight:700;font-size:2rem;line-height:1;text-align:center;border-radius:0;-moz-appearance:textfield;appearance:textfield}.calc .stepper__field input::-webkit-outer-spin-button,.calc .stepper__field input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.calc .stepper__field span{display:block;font-size:.875rem;color:var(--ink-soft);margin-top:2px}.calc .quick{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-bottom:14px}.calc .quick .cchip{min-height:44px;min-width:52px;padding:0 16px;font-size:.95rem}.calc .composer .cbtn--full+.composer__back{display:flex;margin-inline:auto}.calc .result{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow);padding:18px 16px 16px}.calc .result__label{font-size:.85rem;color:var(--ink-soft)}.calc .result__big{font-size:2.2rem;line-height:1.15;font-weight:700;color:var(--navy);letter-spacing:-.02em;margin-top:2px}.calc .result__big small{font-size:1rem;font-weight:500;color:var(--ink-soft);letter-spacing:0;margin-inline-start:4px}.calc .result__per{font-size:.88rem;color:var(--ink-soft);margin-top:2px}.calc .seg{display:flex;gap:4px;padding:4px;background:var(--navy-soft);border-radius:999px;margin:14px 0 16px}.calc .seg button{flex:1;min-height:44px;border:0;border-radius:999px;background:transparent;color:var(--ink-soft);font-weight:600;font-size:.92rem;cursor:pointer}.calc .seg button[aria-checked=true]{background:var(--surface);color:var(--navy);box-shadow:0 1px 3px 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small{display:block;font-weight:400;font-size:.82rem;color:var(--ink-soft);letter-spacing:0;margin-top:1px}.calc .row--muted dd{font-weight:500;font-size:.95rem;color:var(--ink-soft)}.calc details.how{margin-top:14px;border-top:1px solid var(--line);padding-top:4px}.calc details.how summary{list-style:none;cursor:pointer;min-height:44px;display:flex;align-items:center;justify-content:space-between;font-weight:600;font-size:.92rem;color:var(--navy)}.calc details.how summary::-webkit-details-marker{display:none}.calc details.how summary svg{width:16px;height:16px;transition:transform .2s}.calc details.how[open] summary svg{transform:rotate(180deg)}.calc details.how ul{margin:4px 0 6px;padding-inline-start:20px;font-size:.88rem;color:var(--ink-soft);display:grid;gap:4px}.calc .fine{margin-top:12px;font-size:.78rem;color:var(--ink-soft);line-height:1.5}.calc .note-send{font-size:.78rem;color:var(--ink-soft);text-align:center;margin:8px 0 0}@media(prefers-reduced-motion:reduce){.calc 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