[hidden] { display: none !important; }
/* Layout: a working ledger. Tool-first hero (copy left, intake card right), then a full-width
   "workbench" sheet on columnar ledger paper, then plain reference sections. */
:root {
  --paper: #f3f6f2;          /* ledger paper, faint green bias */
  --sheet: #ffffff;
  --ink: #15211b;            /* bank ink */
  --ink-2: #4a5a51;
  --rule: #d5e2d8;           /* ledger ruling */
  --rule-strong: #a9c2b1;
  --accent: #0f6b47;         /* ledger green */
  --accent-ink: #ffffff;
  --accent-soft: #e1efe6;
  --stamp: #0f6b47;
  --warn: #a6460c;
  --warn-soft: #fbeadf;
  --bad: #b3261e;
  --bad-soft: #fbe4e2;
  --out: #8a2f1c;            /* money out */
  --in: #0f6b47;             /* money in */
  --shadow: 0 1px 0 rgba(21, 33, 27, .04), 0 8px 24px -12px rgba(21, 33, 27, .18);
  --f-display: "Bricolage Grotesque", "Segoe UI", system-ui, "PingFang SC", "PingFang TC", "Microsoft YaHei", "Microsoft JhengHei", sans-serif;
  --f-body: "Public Sans", "Segoe UI", system-ui, -apple-system, "PingFang SC", "PingFang TC", "Microsoft YaHei", "Microsoft JhengHei", "Noto Sans CJK SC", sans-serif;
  --f-data: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --r: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f1612; --sheet: #151e19; --ink: #e4ece6; --ink-2: #9fb2a6; --rule: #26342c; --rule-strong: #3b5144;
    --accent: #4cc38a; --accent-ink: #062014; --accent-soft: #173326; --stamp: #4cc38a;
    --warn: #f0a46c; --warn-soft: #3a2416; --bad: #f28b82; --bad-soft: #3b1a18; --out: #f0a08e; --in: #6fd3a0;
    --shadow: 0 1px 0 rgba(0,0,0,.3), 0 10px 30px -12px rgba(0,0,0,.6); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0f1612; --sheet: #151e19; --ink: #e4ece6; --ink-2: #9fb2a6; --rule: #26342c; --rule-strong: #3b5144;
  --accent: #4cc38a; --accent-ink: #062014; --accent-soft: #173326; --stamp: #4cc38a;
  --warn: #f0a46c; --warn-soft: #3a2416; --bad: #f28b82; --bad-soft: #3b1a18; --out: #f0a08e; --in: #6fd3a0;
  --shadow: 0 1px 0 rgba(0,0,0,.3), 0 10px 30px -12px rgba(0,0,0,.6); color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.6 var(--f-body); }
a { color: var(--accent); text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.wrap { max-width: 1160px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
h1, h2, h3 { font-family: var(--f-display); text-wrap: balance; letter-spacing: -0.02em; line-height: 1.1; margin: 0; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 650; letter-spacing: -0.01em; }
p { margin: 0; }
.eyebrow { font: 600 .75rem/1 var(--f-data); text-transform: uppercase; letter-spacing: .12em; color: var(--ink-2); }
.num { font-family: var(--f-data); font-variant-numeric: tabular-nums; }

/* top bar */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--rule); }
.top .wrap { display: flex; align-items: center; gap: 20px; padding-block: 12px; }
.brand { display: flex; align-items: center; gap: 10px; font: 700 1.15rem/1 var(--f-display); color: var(--ink); text-decoration: none; letter-spacing: -0.02em; }
.brand svg { flex: none; }
.top nav { display: flex; gap: 18px; margin-left: auto; font-size: .92rem; }
.top nav a { color: var(--ink-2); text-decoration: none; }
.top nav a:hover { color: var(--ink); }
@media (max-width: 640px) { .top nav .hide-sm { display: none; } }

/* hero */
.hero { padding-block: clamp(32px, 6vw, 72px) 40px; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(24px, 5vw, 64px); align-items: center; }
.hero h1 { font-size: clamp(2.2rem, 5.2vw, 3.9rem); font-weight: 800; letter-spacing: -0.035em; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { margin-top: 18px; font-size: 1.12rem; color: var(--ink-2); max-width: 34em; }
.proof { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 12px; }
.proof li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: start; font-size: .98rem; }
.proof b { font-weight: 650; }
.proof svg { margin-top: 3px; color: var(--accent); }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } }

/* intake card */
.intake { background: var(--sheet); border: 1px solid var(--rule-strong); border-radius: 14px; box-shadow: var(--shadow); padding: 18px; min-width: 0; }
.drop { position: relative; border: 2px dashed var(--rule-strong); border-radius: var(--r); padding: 34px 18px; text-align: center; display: grid; gap: 12px; justify-items: center;
  background-image: repeating-linear-gradient(to bottom, transparent 0 27px, var(--rule) 27px 28px); transition: border-color .15s, background-color .15s; }
.drop.over { border-color: var(--accent); background-color: var(--accent-soft); }
.drop h3 { font-size: 1.25rem; }
.drop p { color: var(--ink-2); font-size: .92rem; }
.drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.btn { appearance: none; border: 1px solid var(--rule-strong); background: var(--sheet); color: var(--ink); font: 600 .92rem/1 var(--f-body); padding: 11px 16px; border-radius: 8px; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; text-decoration: none; white-space: nowrap; }
.btn:hover { border-color: var(--ink-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.btn .pro { font: 700 .62rem/1 var(--f-data); letter-spacing: .08em; padding: 3px 5px; border-radius: 4px; background: var(--accent-soft); color: var(--accent); }
.drop .btn { position: relative; z-index: 2; }
.intake .row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; justify-content: space-between; margin-top: 14px; font-size: .85rem; color: var(--ink-2); }
.lock { display: inline-flex; gap: 6px; align-items: center; }

/* status */
.status { margin-top: 12px; font-size: .9rem; padding: 10px 12px; border-radius: 8px; background: var(--accent-soft); color: var(--ink); }
.status.err { background: var(--bad-soft); color: var(--bad); }
.status.warn { background: var(--warn-soft); color: var(--warn); }

/* workbench */
.bench { padding-block: 8px 56px; }
.sheet { background: var(--sheet); border: 1px solid var(--rule-strong); border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; }
.sheet-head { display: grid; grid-template-columns: 1fr auto; gap: 16px; padding: 18px 20px; border-bottom: 1px solid var(--rule); align-items: center; }
.sheet-head .file { min-width: 0; }
.sheet-head .file h3 { overflow-wrap: anywhere; }
.sheet-head .file p { color: var(--ink-2); font-size: .88rem; margin-top: 4px; }
.tag { display: inline-block; font: 600 .68rem/1 var(--f-data); letter-spacing: .08em; text-transform: uppercase; padding: 4px 6px; border-radius: 4px; background: var(--warn-soft); color: var(--warn); vertical-align: middle; margin-left: 6px; }
.stamp { display: inline-grid; grid-template-columns: auto 1fr; gap: 10px; align-items: center; border: 2px solid var(--stamp); color: var(--stamp); border-radius: 8px; padding: 8px 12px; transform: rotate(-1.5deg); font-weight: 600; font-size: .86rem; line-height: 1.25; max-width: 290px; }
.stamp b { font: 700 1.3rem/1 var(--f-data); }
.stamp.partial { border-color: var(--warn); color: var(--warn); }
.stamp.none { border-color: var(--rule-strong); color: var(--ink-2); transform: none; }
@media (max-width: 640px) { .sheet-head { grid-template-columns: 1fr; } .stamp { transform: none; } }

.figures { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-bottom: 1px solid var(--rule); }
.figures div { padding: 12px 20px; border-right: 1px solid var(--rule); min-width: 0; }
.figures div:last-child { border-right: 0; }
.figures dt { font: 600 .7rem/1 var(--f-data); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); }
.figures dd { margin: 6px 0 0; font: 600 1.15rem/1.2 var(--f-data); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.figures .in { color: var(--in); } .figures .out { color: var(--out); }
@media (max-width: 640px) { .figures { grid-template-columns: 1fr 1fr; } .figures div:nth-child(2) { border-right: 0; } .figures div:nth-child(-n+2) { border-bottom: 1px solid var(--rule); } }

.toolbar { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 20px; border-bottom: 1px solid var(--rule); align-items: center; }
.toolbar .sp { flex: 1; }
.toolbar label { font-size: .85rem; color: var(--ink-2); display: inline-flex; gap: 6px; align-items: center; }
select { font: 500 .88rem var(--f-body); color: var(--ink); background: var(--sheet); border: 1px solid var(--rule-strong); border-radius: 6px; padding: 7px 8px; }

.tablebox { overflow-x: auto; max-height: 560px; overflow-y: auto; }
table.ledger { width: 100%; border-collapse: collapse; font-size: .9rem; min-width: 760px; }
.ledger th { position: sticky; top: 0; background: var(--sheet); z-index: 1; text-align: left; font: 600 .7rem/1 var(--f-data); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); padding: 12px 10px; border-bottom: 2px solid var(--rule-strong); }
.ledger td { padding: 7px 10px; border-bottom: 1px solid var(--rule); vertical-align: top; }
.ledger td.m, .ledger th.m { text-align: right; font-family: var(--f-data); font-variant-numeric: tabular-nums; white-space: nowrap; }
.ledger td.d { font-family: var(--f-data); white-space: nowrap; font-variant-numeric: tabular-nums; }
.ledger td.o { color: var(--out); } .ledger td.i { color: var(--in); }
.ledger td.n { color: var(--ink-2); font-family: var(--f-data); width: 1%; }
.ledger td.ck { width: 1%; text-align: center; }
.ledger td[contenteditable="true"] { cursor: text; }
.ledger td[contenteditable="true"]:hover { background: var(--accent-soft); }
.ledger td[contenteditable="true"]:focus { outline: 2px solid var(--accent); outline-offset: -2px; background: var(--sheet); }
.ledger tr.bad td { background: var(--bad-soft); }
.ledger .x { appearance: none; border: 0; background: none; color: var(--ink-2); cursor: pointer; font-size: 1rem; padding: 0 4px; opacity: .5; }
.ledger tr:hover .x { opacity: 1; }
.ck .ok { color: var(--accent); } .ck .no { color: var(--bad); } .ck .na { color: var(--rule-strong); }
.sheet-foot { padding: 12px 20px; font-size: .85rem; color: var(--ink-2); display: flex; gap: 14px; flex-wrap: wrap; justify-content: space-between; }

/* sections */
section.block { padding-block: 56px; border-top: 1px solid var(--rule); }
.block .intro { display: grid; gap: 10px; max-width: 46em; margin-bottom: 30px; }
.block .intro p { color: var(--ink-2); font-size: 1.05rem; }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; counter-reset: s; list-style: none; padding: 0; margin: 0; }
.steps li { display: grid; gap: 8px; padding-top: 16px; border-top: 2px solid var(--ink); }
.steps li::before { counter-increment: s; content: "Step " counter(s); font: 600 .75rem/1 var(--f-data); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.steps p, .feat p { color: var(--ink-2); font-size: .97rem; }
.feat { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.feat > div { display: grid; gap: 8px; align-content: start; }
@media (max-width: 760px) { .steps, .feat { grid-template-columns: 1fr; } }

.prices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; max-width: 820px; }
.plan { background: var(--sheet); border: 1px solid var(--rule-strong); border-radius: 14px; padding: 24px; display: grid; gap: 14px; align-content: start; }
.plan.pro { border: 2px solid var(--accent); }
.plan .price { font: 700 2.2rem/1 var(--f-display); letter-spacing: -0.03em; }
.plan .price small { font: 500 .95rem var(--f-body); color: var(--ink-2); letter-spacing: 0; }
.plan ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; font-size: .95rem; }
.plan li { display: grid; grid-template-columns: 18px 1fr; gap: 8px; }
.plan li::before { content: "✓"; color: var(--accent); font-weight: 700; }
.plan .note { font-size: .85rem; color: var(--ink-2); }
@media (max-width: 680px) { .prices { grid-template-columns: 1fr; } }

.faq { display: grid; gap: 0; max-width: 820px; }
.faq details { border-bottom: 1px solid var(--rule); padding: 16px 0; }
.faq summary { cursor: pointer; font-weight: 650; font-size: 1.02rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::after { content: "+"; font-family: var(--f-data); color: var(--accent); }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin-top: 10px; color: var(--ink-2); max-width: 65ch; }
.seo { max-width: 70ch; display: grid; gap: 14px; color: var(--ink-2); }
.seo h2 { color: var(--ink); }

footer { border-top: 1px solid var(--rule); padding-block: 36px 48px; font-size: .88rem; color: var(--ink-2); }
footer .cols { display: grid; grid-template-columns: 1.2fr 2fr; gap: 28px; }
footer .banks { display: flex; flex-wrap: wrap; gap: 6px 14px; }
footer .banks a { color: var(--ink-2); }
@media (max-width: 680px) { footer .cols { grid-template-columns: 1fr; } }

/* modal */
.modal { position: fixed; inset: 0; z-index: 50; background: rgba(10, 20, 15, .55); display: grid; place-items: center; padding: 16px; }
.modal .box { background: var(--sheet); border-radius: 14px; max-width: 460px; width: 100%; padding: 24px; display: grid; gap: 14px; box-shadow: var(--shadow); border: 1px solid var(--rule-strong); }
.modal input[type=text] { font: 500 .95rem var(--f-data); padding: 10px; border: 1px solid var(--rule-strong); border-radius: 8px; background: var(--paper); color: var(--ink); width: 100%; }
.modal .acts { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.toast { position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); background: var(--ink); color: var(--paper); padding: 10px 16px; border-radius: 8px; font-size: .9rem; z-index: 60; max-width: calc(100% - 32px); }
#bench { scroll-margin-top: 72px; }
.prog { margin-top: 12px; display: grid; gap: 6px; }
.prog .track { height: 8px; border-radius: 99px; background: var(--rule); overflow: hidden; }
.prog .fill { height: 100%; width: 3%; background: var(--accent); border-radius: 99px; transition: width .2s ease; }
.prog span { font-size: .85rem; color: var(--ink-2); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
body.busy .drop { opacity: .6; pointer-events: none; }
.prices { grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 1100px; }
@media (max-width: 900px) { .prices { grid-template-columns: 1fr; max-width: 520px; } }
.lang { font: 500 .85rem var(--f-body); padding: 5px 6px; }
.top .wrap { gap: 12px; }
.top nav { min-width: 0; align-items: center; }
@media (max-width: 480px) { .top nav a { display: none; } .brand { font-size: 1.05rem; } }
.ledger th { white-space: nowrap; }

.sr { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; }