/* 5472.net — E: cream filing workspace. See DESIGN.md for the selected direction. */
@import url('/vendor/jbmono/400.css');
@import url('/vendor/jbmono/500.css');
@import url('/fonts/noto-sans-sc/font.css');
@font-face { font-family: "Inter"; src: url('/fonts/inter-latin.woff2') format('woff2'); font-style: normal; font-weight: 100 900; font-display: swap; unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD; }
@font-face { font-family: "Inter"; src: url('/fonts/inter-latin-ext.woff2') format('woff2'); font-style: normal; font-weight: 100 900; font-display: swap; unicode-range: U+0100-02FF,U+1E00-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF; }
:root {
  --font-display: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-sans: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --heading-tracking: -.025em;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  --canvas: #f7f5ef; --surface-0: #f3f3ec; --surface-card: #fffefa; --surface-sunken: #eae9df; --surface-popover: #fffefa;
  --text: #252c2b; --text-2: #596158; --text-3: #5f675b;
  --alpha-1: #252c2b08; --alpha-2: #252c2b14; --alpha-3: #252c2b2e; --alpha-4: #252c2b66;
  --border: #dfe0d6; --border-strong: #c0c6bb; --hover: #252c2b08; --selected: #f1d46b;
  --brand: #252c2b; --brand-hover: #3b4541; --brand-ink: #fffefa; --brand-text: #252c2b; --brand-subtle: #f5eed3; --brand-line: #c2ae59; --brand-glow: #252c2b18;
  --selection: #f1d46b; --selection-ink: #252c2b;
  --ok: #25684c; --ok-subtle: #e9f3eb; --warn: #815710; --warn-subtle: #faf0d7; --danger: #ad3d35; --danger-subtle: #faeeeb;
  --shadow-color: #252c2b0a; --shadow-sm: 0 1px 3px #252c2b05, 0 4px 12px var(--shadow-color);
  --shadow-md: 0 2px 6px #252c2b08, 0 12px 30px var(--shadow-color); --shadow-lg: 0 4px 12px #252c2b0d, 0 24px 64px #252c2b14;
  --hair: 1px; --ring: 0 0 0 var(--hair) var(--border); --ring-strong: 0 0 0 var(--hair) var(--border-strong);
  --focus: inset 0 0 0 1.5px var(--text), 0 0 0 3px var(--alpha-2);
  --r-xs: 10px; --r-control: 18px; --r-panel: 24px; --r-card: 32px; --r-input: 16px; --r-dialog: 28px; --r-pill: 9999px; --r-workspace: 48px;
  --h-control: 44px; --h-field: 54px; --g1: 8px; --g2: 12px; --g3: 20px; --g4: 32px; --g5: 48px;
  --d-fast: 80ms; --d-snap: 160ms; --d-base: 220ms; --d-sheet: 300ms; --d-slow: 420ms;
  --ease-out: cubic-bezier(.22,1,.36,1); --ease-snap: cubic-bezier(.3,.75,.25,1); --ease-overshoot: cubic-bezier(.22,1,.36,1); --ease-enter: cubic-bezier(.22,1,.36,1); --ease-gentle: cubic-bezier(.22,1,.36,1); --spring: cubic-bezier(.2,.8,.2,1);
  --scroll-fade: 24px; --touch: 44px; color-scheme: light;
}
html:lang(zh) { --heading-tracking: 0; }
:root[data-theme="dark"] {
  --canvas: #1d211e; --surface-0: #242a25; --surface-card: #272e28; --surface-sunken: #151c17; --surface-popover: #2b322c;
  --text: #f5f3e9; --text-2: #ccd0c2; --text-3: #acb5a6;
  --alpha-1: #f5f3e90a; --alpha-2: #f5f3e91a; --alpha-3: #f5f3e933; --alpha-4: #f5f3e96b;
  --border: #414a3f; --border-strong: #717c69; --hover: #f5f3e90a; --selected: #61562c;
  --brand: #f0eddf; --brand-hover: #ffffff; --brand-ink: #222b23; --brand-text: #f0eddf; --brand-subtle: #3c3824; --brand-line: #a99748; --brand-glow: #f1d46b14;
  --selection: #e8cd70; --selection-ink: #252c2b;
  --ok: #a6d5b4; --ok-subtle: #213c2c; --warn: #e5c984; --warn-subtle: #3e3420; --danger: #f1aea6; --danger-subtle: #442a27;
  --shadow-color: #0000001a; color-scheme: dark;
}
@media (min-resolution: 2dppx) { :root { --hair: .5px; } }

/* ---------- base ---------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; scrollbar-gutter: stable; -webkit-tap-highlight-color: transparent; }
::view-transition-old(root), ::view-transition-new(root) { animation-duration: var(--d-base); animation-timing-function: var(--ease-out); }
.site-header { view-transition-name: site-header; }
::view-transition-group(site-header) { animation: none; }
html, body { margin: 0; }
body {
  background: var(--canvas);
  color: var(--text);
  font: 400 16px/1.65 var(--font-sans);
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--d-base) var(--ease-out), color var(--d-base) var(--ease-out);
}
h1, h2, h3, h4 { text-wrap: balance; margin: 0 0 var(--g2); line-height: 1.25; font-family: var(--font-display); font-weight: 500; letter-spacing: var(--heading-tracking); color: var(--text); }
h1 { font-size: clamp(30px, 3.8vw, 44px); }
h2 { font-size: 26px; }
h3 { font-size: 18px; letter-spacing: -0.01em; }
p { margin: 0 0 var(--g3); text-wrap: pretty; }
/* numbers never jiggle: amounts, dates, EIN, counters */
.num, .mono, .price, .stat b, dl.kv dd, .table td, .badge, .meta, .kicker, input { font-variant-numeric: tabular-nums; }
button, a, label, summary { touch-action: manipulation; }
a { color: var(--brand-text); text-decoration: underline; text-decoration-color: var(--brand-line); text-underline-offset: 3px; transition: text-decoration-color var(--d-snap) var(--ease-out); }
a:hover { text-decoration-color: currentColor; }
small { font-size: 13px; }
code, .mono { font-family: var(--font-mono); font-size: .9em; }
code { padding: 1px 6px; border-radius: var(--r-xs); background: var(--alpha-1); }
hr { border: 0; height: 1px; background: var(--border); margin: var(--g4) 0; }
::selection { background: var(--selection); color: var(--selection-ink); }
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: var(--r-control); }

.muted { color: var(--text-2); }
.faint { color: var(--text-3); }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--g4); }
.container.wide { max-width: 1440px; padding-inline: 64px; }
.container.narrow { max-width: 720px; }
@media (max-width: 960px) { .container.wide { padding-inline: 28px; } }
@media (max-width: 640px) { .container, .container.wide { padding-inline: 20px; } }


/* ---------- shared navigation ---------- */
.site-header { position: sticky; top: 0; z-index: 30; background: var(--canvas); transition: box-shadow var(--d-base) var(--ease-out); }
.site-header.is-scrolled { box-shadow: 0 1px 0 var(--border); }
.site-header .bar { min-height: 96px; display: flex; align-items: center; gap: 24px; }
.logo { display: inline-flex; align-items: baseline; gap: 0; color: var(--text); text-decoration: none; font: 700 31px/1 var(--font-display); letter-spacing: -.065em; white-space: nowrap; }
.logo .wordmark { display: inline-flex; align-items: baseline; }
.logo .tld { font-weight: 500; color: var(--text); letter-spacing: -.055em; }
.logo-mark { width: 36px; height: 36px; object-fit: contain; margin-right: 12px; align-self: center; }
:root[data-theme="dark"] .logo-mark { filter: brightness(0) invert(1); }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: 16px; }
.site-links { display: flex; align-items: center; gap: 28px; }
.site-nav a { color: var(--text); text-decoration: none; font-size: 14px; line-height: 1.4; padding: 10px 2px; border-radius: 8px; transition: color var(--d-snap) var(--ease-out); }
.site-nav a:hover { color: var(--text-2); }
.site-nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 7px; text-decoration-color: var(--text); }
.site-nav .sep { width: 1px; height: 22px; background: var(--border); margin: 0 2px; }
.mobile-nav { display: none; position: relative; }
.mobile-nav summary { list-style: none; display: flex; align-items: center; min-height: 44px; padding: 0 14px; border-radius: 16px; border: 1px solid var(--border); font-size: 14px; cursor: pointer; }
.mobile-nav summary::-webkit-details-marker { display: none; }
.mobile-nav .menu, .lang-menu .menu { position: absolute; right: 0; top: calc(100% + 10px); z-index: 40; min-width: 208px; margin: 0; padding: 10px; list-style: none; background: var(--surface-popover); border-radius: 22px; box-shadow: var(--ring), var(--shadow-lg); transform-origin: top right; animation: pill-in var(--d-base) var(--ease-out) both; }
.mobile-nav .menu a, .lang-menu .menu a { display: flex; align-items: center; min-height: 44px; padding: 10px 12px; border-radius: 12px; }
.mobile-nav .menu a:hover, .lang-menu .menu a:hover { background: var(--hover); }
.lang-menu { position: relative; }
.lang-menu summary { list-style: none; display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 14px; border: 1px solid var(--border); border-radius: 16px; cursor: pointer; font: 500 13px/1 var(--font-sans); }
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary svg { width: 16px; height: 16px; }
.lang-menu .menu a[aria-current="true"] { background: var(--selection); color: var(--selection-ink); font-weight: 600; }
@media (max-width: 1000px) { .site-links { gap: 16px; } .site-nav { gap: 10px; } .site-nav .sep { display: none; } }
@media (max-width: 760px) { .site-header .bar { min-height: 80px; gap: 12px; } .logo { font-size: 25px; } .logo-mark { width: 28px; height: 28px; margin-right: 7px; } .site-links { display: none; } .mobile-nav { display: block; } .site-nav { gap: 8px; } }
@media (max-width: 390px) { .site-header .bar { gap: 6px; } .site-nav { gap: 4px; } .lang-menu summary, .mobile-nav summary { padding-inline: 10px; } }

/* ---------- buttons ---------- */

.btn {
  --press: 1;
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 50px; padding: 0 20px;
  font: 500 14px/1 var(--font-sans); letter-spacing: .01em; white-space: nowrap;
  color: var(--text); background: var(--surface-card); text-decoration: none;
  border: 0; border-radius: var(--r-control); box-shadow: var(--ring);
  cursor: pointer; user-select: none;
  transform: scale(var(--press));
  transition: transform var(--d-sheet) var(--spring), background-color var(--d-snap) var(--ease-out), box-shadow var(--d-snap) var(--ease-out), color var(--d-snap) var(--ease-out);
}
.btn:hover { background: var(--surface-sunken); box-shadow: var(--ring-strong); }
.btn:active { --press: .985; transition: transform var(--d-fast) var(--ease-out); }
.btn:focus-visible { box-shadow: var(--focus); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .5; cursor: not-allowed; --press: 1; }
.btn.primary { color: var(--brand-ink); background: var(--brand); box-shadow: none; }
.btn.primary:hover { background: var(--brand-hover); }
.btn.dark { color: var(--canvas); background: var(--text); box-shadow: none; }
.btn.dark:hover { background: color-mix(in srgb, var(--text) 85%, var(--canvas)); }
.btn.ghost { background: transparent; box-shadow: none; color: var(--text-2); }
.btn.ghost:hover { background: var(--hover); color: var(--text); }
.btn.sm { height: var(--h-control); padding: 0 12px; font-size: 13px; }
.btn.xs { height: 36px; padding: 0 12px; font-size: 13px; border-radius: var(--r-xs); }
.btn.lg { height: 58px; padding: 0 24px; font-size: 16px; }
.btn.pill { border-radius: var(--r-pill); }
.btn.block { width: 100%; }
.btn .arrow { transition: transform var(--d-base) var(--ease-out); }
.btn:hover .arrow { transform: translateX(2px); }
.btn.loading { color: transparent; pointer-events: none; }
.btn.loading::after {
  content: ""; position: absolute; width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid var(--brand-ink); border-right-color: transparent; animation: spin .7s linear infinite;
}
.btn:not(.primary).loading::after { border-color: var(--text); border-right-color: transparent; }
@keyframes spin { to { transform: rotate(360deg); } }

.icon-btn {
  width: 44px; height: 44px; display: inline-grid; place-items: center; border: 0; padding: 0;
  border-radius: var(--r-control); background: transparent; color: var(--text); cursor: pointer;
  transition: background-color var(--d-snap) var(--ease-out), transform var(--d-snap) var(--ease-overshoot);
}
.icon-btn:hover { background: var(--hover); }
.icon-btn:active { transform: scale(.94); }
.icon-btn svg { width: 18px; height: 18px; }
.theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .moon { display: block; }

/* ---------- surfaces ---------- */

.panel { background: var(--surface-card); border-radius: var(--r-card); box-shadow: none; padding: var(--g4); }
.panel + .panel { margin-top: var(--g3); }
.panel.raised { box-shadow: var(--ring), var(--shadow-sm); }
.panel.flush { padding: 0; overflow: hidden; }
.panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--g3); margin-bottom: var(--g3); }
.panel-head h2, .panel-head h3 { margin: 0; }
@media (max-width: 640px) { .panel { padding: 20px; } }

.kicker { display: inline-flex; align-items: center; gap: 6px; font: 500 12px/1.4 var(--font-mono); color: var(--text-3); letter-spacing: 0; margin-bottom: var(--g1); }
.kicker .num { color: var(--brand-text); }

/* hairline cell grid: stats strip, feature rows */
.cells { display: grid; grid-template-columns: repeat(var(--cols, 4), 1fr); border-radius: var(--r-card); box-shadow: var(--ring-strong); background: var(--surface-card); overflow: hidden; }
.cells > * { padding: var(--g4) 24px; box-shadow: -1px 0 0 var(--border-strong); }
.cells > *:first-child { box-shadow: none; }
@media (max-width: 760px) {
  .cells { grid-template-columns: 1fr 1fr; }
  .cells > * { box-shadow: -1px 0 0 var(--border-strong), 0 -1px 0 var(--border-strong); }
  .cells > *:nth-child(odd) { box-shadow: 0 -1px 0 var(--border-strong); }
  .cells > *:first-child { box-shadow: none; }
  .cells > *:nth-child(2) { box-shadow: -1px 0 0 var(--border-strong); }
}
.stat { text-align: center; }
.stat b { display: block; font-size: 34px; font-weight: 650; letter-spacing: var(--heading-tracking); line-height: 1.15; }
.stat span { color: var(--text-2); font-size: 14px; }
.stat b.phone { font-family: var(--font-mono); font-size: 24px; line-height: 1.7; white-space: nowrap; }
@media (max-width: 640px) { .stat b { font-size: 26px; } .stat b.phone { font-size: 15px; line-height: 2.6; } .cells > * { padding: 20px 14px; } }

.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 640px) { .card-grid.two { grid-template-columns: 1fr; } }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: var(--g3); }
.tile {
  display: block; padding: 24px 20px; border-radius: var(--r-card); background: var(--surface-card); box-shadow: var(--ring);
  color: inherit; text-decoration: none;
  transition: box-shadow var(--d-base) var(--ease-out), transform var(--d-base) var(--ease-out);
}
a.tile:hover, button.tile:hover { box-shadow: var(--ring-strong), 0 4px 16px -2px #00000017; transform: translateY(-1px); }
.tile h3 { margin-bottom: 6px; }
.tile p { margin: 0; color: var(--text-2); font-size: 14px; }


/* ---------- sections (landing) ---------- */

.section { padding: 72px 0 0; }
.section-head { max-width: 760px; margin-bottom: var(--g4); }
.section-head h2 { font-size: 30px; margin-bottom: var(--g2); }
.section-head p { color: var(--text-2); font-size: 16px; margin: 0; }
.section-head.split { max-width: none; display: flex; justify-content: space-between; align-items: flex-end; gap: var(--g3); flex-wrap: wrap; }
@media (max-width: 640px) { .section { padding-top: 56px; } .section-head h2 { font-size: 24px; } }


/* ---------- tables ---------- */

.table-wrap { border-radius: var(--r-card); box-shadow: var(--ring); background: var(--surface-card); overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; font-weight: 500; color: var(--text-3); padding: 12px 16px; font-size: 13px; background: var(--surface-0); white-space: nowrap; }
.table td { padding: 12px 16px; border-top: 1px solid var(--border); vertical-align: top; }
.table td.mono, .table .mono { font-size: 13px; }
.table tr:hover td { background: color-mix(in srgb, var(--hover) 50%, transparent); }

/* ---------- forms ---------- */

.form-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 26px var(--g3); }
.col-12 { grid-column: span 12; } .col-8 { grid-column: span 8; } .col-6 { grid-column: span 6; }
.col-4 { grid-column: span 4; } .col-3 { grid-column: span 3; }
@media (max-width: 640px) { .col-8, .col-6, .col-4, .col-3 { grid-column: span 12; } }

.field { display: block; min-width: 0; }
.field > .label { display: flex; justify-content: space-between; gap: 8px; font-size: 14px; font-weight: 500; color: var(--text); margin-bottom: 6px; }
.field > .label .opt { color: var(--text-3); font-weight: 400; }
.field > .hint { display: block; font-size: 13px; color: var(--text-3); margin-top: 8px; line-height: 1.5; }
.input, .field input[type=text], .field input[type=email], .field input[type=date], .field input[type=number], .field input[type=tel], .field input[type=password], .field select, .field textarea {
  width: 100%; height: var(--h-field); padding: 0 16px;
  font: 400 16px/1.4 var(--font-sans); color: var(--text);
  background: var(--surface-card); border: 0; border-radius: var(--r-input); outline: none;
  box-shadow: inset 0 0 0 1px var(--border-strong);
  transition: box-shadow var(--d-snap) var(--ease-out), background-color var(--d-snap) var(--ease-out);
  appearance: none; -webkit-appearance: none;
}
.field textarea { height: auto; min-height: 88px; padding: 10px 12px; border-radius: var(--r-input); }
.field select { padding-right: 34px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; }
.field input::placeholder { color: var(--text-3); opacity: 1; }
.field input:hover, .field select:hover, .field textarea:hover, .input:hover { box-shadow: inset 0 0 0 1px var(--alpha-4); }
.field input:focus, .field select:focus, .field textarea:focus, .input:focus { box-shadow: var(--focus); }
.field input[type=date] { padding-right: 8px; }
input[type=number] { -moz-appearance: textfield; appearance: textfield; }
input[type=number]::-webkit-inner-spin-button, input[type=number]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.field.invalid input, .field.invalid select, td.invalid input { box-shadow: inset 0 0 0 1px var(--danger), 0 0 0 3px var(--danger-subtle); }
.err { display: block; color: var(--danger); font-size: 13px; margin-top: 6px; animation: rise var(--d-base) var(--ease-out) both; }

.prefix { display: flex; align-items: center; gap: 12px; width: 100%; height: var(--h-field); padding: 0 16px; border-radius: var(--r-input); background: var(--surface-card); box-shadow: inset 0 0 0 1px var(--border-strong); transition: box-shadow var(--d-snap) var(--ease-out); }
.prefix > span { flex: none; color: var(--text-3); font-size: 16px; line-height: 1; pointer-events: none; }
.field .prefix > input[type=number] { min-width: 0; height: 100%; padding: 0; border-radius: 0; background: transparent; box-shadow: none; }
.prefix:hover { box-shadow: inset 0 0 0 1px var(--alpha-4); }
.prefix:focus-within { box-shadow: var(--focus); }
.field.invalid .prefix { box-shadow: inset 0 0 0 1px var(--danger), 0 0 0 3px var(--danger-subtle); }

.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--text); cursor: pointer; padding: 6px 0; line-height: 1.55; }
.check input { appearance: none; -webkit-appearance: none; flex: none; width: 18px; height: 18px; margin: 2px 0 0; border-radius: 5px; background: var(--surface-card); box-shadow: inset 0 0 0 1px var(--alpha-4); cursor: pointer; display: grid; place-items: center; transition: background-color var(--d-snap) var(--ease-out), box-shadow var(--d-snap) var(--ease-out); }
.check input::after { content: ""; width: 10px; height: 10px; background: var(--brand-ink); clip-path: polygon(14% 44%, 0 59%, 39% 100%, 100% 22%, 86% 8%, 38% 70%); transform: scale(0); }
.check input:checked::after { animation: pill-pop 200ms both; }
.check input:checked { background: var(--brand); box-shadow: none; }
.check input:checked::after { transform: scale(1); }
.check input:focus-visible { box-shadow: var(--focus); }
.checks { display: grid; gap: 2px; }

/* option cards (radio) */
.options { display: grid; gap: var(--g1); }
.options.two { grid-template-columns: 1fr 1fr; }
@media (max-width: 640px) { .options.two { grid-template-columns: 1fr; } }
.option {
  position: relative; display: flex; gap: 12px; align-items: flex-start; padding: 18px 20px;
  border-radius: 22px; background: var(--surface-card); box-shadow: inset 0 0 0 1px var(--border-strong);
  cursor: pointer; font-size: 14px; line-height: 1.5;
  transition: box-shadow var(--d-snap) var(--ease-out), background-color var(--d-snap) var(--ease-out);
}
.option:hover { box-shadow: inset 0 0 0 1px var(--alpha-4); }
.option input { appearance: none; -webkit-appearance: none; flex: none; width: 18px; height: 18px; margin: 1px 0 0; border-radius: 50%; box-shadow: inset 0 0 0 1px var(--alpha-4); background: var(--surface-card); display: grid; place-items: center; cursor: pointer; transition: box-shadow var(--d-snap) var(--ease-out); }
.option input::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--brand-ink); transform: scale(0); transition: transform var(--d-base) var(--ease-overshoot); }
.option input:checked { background: var(--brand); box-shadow: none; }
.option input:checked::after { transform: scale(1); }
.option:has(input:checked) { box-shadow: inset 0 0 0 1px var(--selection); background: var(--selection); color: var(--selection-ink); }
.option:has(input:checked) small { color: var(--selection-ink); }
.option:has(input:checked) input { background: var(--selection-ink); }
.option:has(input:checked) input::after { background: #fffefa; }
.option:has(input:focus-visible) { box-shadow: var(--focus); }
.option b { display: block; font-weight: 600; }
.option small { display: block; color: var(--text-2); font-size: 13px; margin-top: 2px; }

/* segmented control */
.segmented { display: inline-flex; padding: 3px; gap: 2px; border-radius: calc(var(--r-control) + 2px); background: var(--alpha-1); box-shadow: inset 0 0 0 1px var(--border); }
.segmented button { height: 42px; padding: 0 16px; border: 0; border-radius: var(--r-control); background: transparent; color: var(--text-2); font: 500 13px/1 var(--font-sans); cursor: pointer; transition: background-color var(--d-base) var(--ease-snap), color var(--d-base) var(--ease-snap), box-shadow var(--d-base) var(--ease-snap); }
.segmented button:hover { color: var(--text); }
.segmented button[aria-pressed="true"] { background: var(--selection); color: var(--selection-ink); box-shadow: none; }

/* ---------- notices & badges ---------- */

.notice { display: flex; gap: 10px; padding: 12px 14px; border-radius: var(--r-panel); font-size: 14px; line-height: 1.6; background: var(--surface-sunken); color: var(--text); box-shadow: inset 0 0 0 1px var(--border); }
.notice > svg, .notice > [data-icon] svg { flex: none; width: 16px; height: 16px; margin-top: 3px; }
.notice > [data-icon] { display: inline-flex; flex: none; }
.notice p { margin: 0; }
.notice p + p { margin-top: 6px; }
.notice.info { background: var(--brand-subtle); box-shadow: inset 0 0 0 1px var(--brand-line); }
.notice.info > svg, .notice.info > [data-icon] { color: var(--brand-text); }
.notice.ok { background: var(--ok-subtle); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ok) 25%, transparent); }
.notice.ok > svg { color: var(--ok); }
.notice.warn { background: var(--warn-subtle); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--warn) 25%, transparent); }
.notice.warn > svg { color: var(--warn); }
.notice.danger { background: var(--danger-subtle); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--danger) 25%, transparent); }
.notice.danger > svg { color: var(--danger); }
.notice + .notice { margin-top: var(--g1); }

.badge { display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 10px; border-radius: var(--r-pill); font-size: 13px; font-weight: 550; background: var(--alpha-1); color: var(--text-2); box-shadow: inset 0 0 0 1px var(--border); white-space: nowrap; animation: pill-in var(--d-base) var(--ease-out) both; }
.badge.pop { animation: pill-pop 200ms both; }
.badge.brand { background: var(--brand-subtle); color: var(--brand-text); box-shadow: inset 0 0 0 1px var(--brand-line); }
.badge.ok { background: var(--ok-subtle); color: var(--ok); box-shadow: none; }
.badge.warn { background: var(--warn-subtle); color: var(--warn); box-shadow: none; }
.badge.danger { background: var(--danger-subtle); color: var(--danger); box-shadow: none; }
@keyframes pill-pop {
  0% { transform: scale(.6); opacity: 0; animation-timing-function: var(--ease-out); }
  40% { transform: scale(1.06); opacity: 1; animation-timing-function: var(--ease-overshoot); }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes pill-in { from { transform: scale(.92); opacity: 0; } to { transform: none; opacity: 1; } }

.status-dot { position: relative; width: 6px; height: 6px; border-radius: 50%; background: var(--text-3); flex: none; display: inline-block; }
.status-dot.ok { background: var(--ok); }
.status-dot.brand { background: var(--brand); }
.status-dot.danger { background: var(--danger); }
.status-dot.warn { background: var(--warn); }
.status-dot.pulse::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: inherit; animation: pulse 1.6s cubic-bezier(.4, 0, .2, 1) infinite; }
@keyframes pulse { 0% { transform: scale(1); opacity: .6; } 100% { transform: scale(2.6); opacity: 0; } }

/* ---------- FAQ accordion ---------- */

.faq { border-top: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: var(--g3); padding: 18px 2px; font-weight: 600; font-size: 16px; letter-spacing: -0.01em; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; width: 10px; height: 10px; flex: none; border-right: 1.6px solid var(--text-2); border-bottom: 1.6px solid var(--text-2); transform: rotate(45deg) translate(-2px, -2px); transition: transform var(--d-base) var(--ease-snap); }
.faq details[open] summary::after { transform: rotate(-135deg) translate(-2px, -2px); }
.faq .answer { padding: 0 2px 20px; color: var(--text-2); max-width: 820px; animation: rise var(--d-base) var(--ease-out) both; }
.faq .answer p:last-child { margin: 0; }

details.disclosure > summary { cursor: pointer; font-size: 14px; font-weight: 550; color: var(--text-2); list-style: none; display: inline-flex; align-items: center; gap: 8px; padding: 4px 0; }
details.disclosure > summary::-webkit-details-marker { display: none; }
details.disclosure > summary::before { content: ""; width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(-45deg); transition: transform var(--d-base) var(--ease-snap); }
details.disclosure[open] > summary::before { transform: rotate(45deg); }
details.disclosure > .body { padding-top: var(--g2); animation: rise var(--d-base) var(--ease-out) both; }


.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { position: relative; height: 28px; padding: 0 12px; border: 0; border-radius: var(--r-pill); background: var(--alpha-1); box-shadow: none; color: var(--text); font: 450 13px/1 var(--font-sans); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; transition: background-color var(--d-snap) var(--ease-out), transform var(--d-snap) var(--ease-overshoot), box-shadow var(--d-snap) var(--ease-out); }
.chip::before { content: "+"; color: var(--brand-text); font-weight: 600; }
.chip:hover { background: var(--brand-subtle); color: var(--brand-text); }
.chip:active { transform: scale(.96); }

dl.kv { display: grid; grid-template-columns: 168px minmax(0, 1fr); margin: 0; font-size: 14px; }
dl.kv dt, dl.kv dd { padding: 10px 0; border-top: 1px solid var(--border); margin: 0; }
dl.kv dt:first-of-type, dl.kv dd:first-of-type { border-top: 0; }
dl.kv dt { color: var(--text-3); }
dl.kv dd { word-break: break-word; }
@media (max-width: 640px) { dl.kv { grid-template-columns: 1fr; } dl.kv dd { border-top: 0; padding-top: 0; } }

.doc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--g1); }
.doc-list li { display: flex; gap: 12px; align-items: center; padding: 12px 14px; border-radius: var(--r-panel); background: var(--surface-0); font-size: 14px; animation: rise var(--d-slow) var(--ease-out) both; }
.doc-list li:nth-child(2) { animation-delay: 80ms; } .doc-list li:nth-child(3) { animation-delay: 110ms; }
.doc-list .doc-icon { width: 32px; letter-spacing: -0.04em; height: 34px; flex: none; border-radius: 4px; background: var(--surface-card); box-shadow: inset 0 0 0 1px var(--border-strong); display: grid; place-items: center; font: 600 8px/1 var(--font-mono); color: var(--brand-text); }
.doc-list small { display: block; color: var(--text-3); font-size: 13px; }


.pages { position: relative; max-height: 860px; overflow-y: auto; padding: var(--g3); border-radius: var(--r-card); background: var(--surface-sunken); box-shadow: inset 0 0 0 1px var(--border);
}
.pages canvas { display: block; width: 100%; max-width: 816px; height: auto; margin: 0 auto var(--g3); background: #fff; border-radius: 4px; box-shadow: var(--shadow-md); animation: rise var(--d-slow) var(--ease-out) both; }
.pages canvas:last-child { margin-bottom: 0; }
/* Skeletons, two modes (v2 §3.5.2): lockstep pulses a group together (2s, dims to 60%);
   wave sweeps each block at 105°, delayed by index × 90ms. */
.skeleton { display: block; border-radius: var(--r-xs); background: var(--alpha-2); }
.skeleton.page { max-width: 816px; aspect-ratio: 8.5 / 11; margin: 0 auto var(--g3); border-radius: 4px; background-color: var(--surface-card); box-shadow: var(--shadow-sm); }
.skeleton.line { height: 14px; margin: 8px 0; }
.lockstep .skeleton, .skeleton.lockstep { animation: lockstep 2s ease-in-out infinite; }
@keyframes lockstep { 0%, 100% { opacity: 1; } 50% { opacity: .6; } }
.skeleton.wave { background-image: linear-gradient(105deg, transparent 40%, var(--alpha-1) 50%, transparent 60%); background-size: 300% 100%; animation: wave 1.6s linear infinite; animation-delay: calc(var(--i, 0) * 90ms); }
@keyframes wave { from { background-position: 100% 0; } to { background-position: -50% 0; } }


/* ---------- shared footer ---------- */
.site-footer { margin-top: 104px; padding: 64px 0 32px; color: var(--text-2); font-size: 14px; background: var(--surface-sunken); border-radius: 48px 48px 0 0; }
.site-footer .row { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.site-footer a { color: var(--text); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer .foot-grid { display: grid; grid-template-columns: 1.7fr 1fr 1.25fr 1fr .8fr; gap: 32px; }
.site-footer .foot-brand { max-width: 310px; }
.site-footer .foot-brand .logo { margin-bottom: 20px; }
.site-footer .foot-brand p { font-size: 14px; line-height: 1.8; }
.site-footer h4 { margin: 4px 0 18px; font: 600 14px/1.4 var(--font-sans); letter-spacing: 0; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.site-footer ul a { display: inline-block; font-size: 13px; line-height: 1.5; }
.foot-bottom { display: flex; flex-direction: column; gap: 12px; margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border-strong); font-size: 13px; line-height: 1.7; color: var(--text-2); }
@media (max-width: 1080px) { .site-footer .foot-grid { grid-template-columns: 1.5fr 1fr 1fr; } .site-footer .foot-brand { grid-row: span 2; } }
@media (max-width: 700px) { .site-footer { margin-top: 72px; padding-top: 40px; border-radius: 32px 32px 0 0; } .site-footer .foot-grid { grid-template-columns: 1fr 1fr; gap: 32px 20px; } .site-footer .foot-brand { max-width: 100%; grid-column: 1 / -1; grid-row: auto; } }

/* ---------- restrained entry and state transitions ---------- */
@keyframes rise { from { opacity: .2; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.stagger > * { animation: rise var(--d-sheet) var(--ease-out) both; }
.reveal { opacity: 1; transform: none; }
.reveal.in { animation: rise var(--d-slow) var(--ease-out) both; }
.btn > svg, .btn .arrow svg, .btn .arrow { width: 18px; height: 18px; flex: none; }
.btn .arrow { display: inline-flex; }
.deadline-slot { padding-top: 20px; }
@media (max-width: 640px) { .deadline-slot { padding-top: 0; } .panel-head { flex-direction: column; align-items: stretch; } }

/* Scroll fade: 7-stop perceptual alpha mask (v1 §8.3). Edges only fade when
   there is content beyond them; site.js toggles the vars on scroll. */
.scroll-fade {
  --fade-t: 0px; --fade-b: 0px;
  -webkit-mask-image: linear-gradient(to bottom, transparent, #0000000d calc(var(--fade-t) * .15), #00000026 calc(var(--fade-t) * .3), #0000004d calc(var(--fade-t) * .45), #00000080 calc(var(--fade-t) * .6), #000000b3 calc(var(--fade-t) * .75), #000000d9 calc(var(--fade-t) * .87), #000 var(--fade-t), #000 calc(100% - var(--fade-b)), #000000d9 calc(100% - var(--fade-b) * .87), #000000b3 calc(100% - var(--fade-b) * .75), #00000080 calc(100% - var(--fade-b) * .6), #0000004d calc(100% - var(--fade-b) * .45), #00000026 calc(100% - var(--fade-b) * .3), #0000000d calc(100% - var(--fade-b) * .15), transparent);
          mask-image: linear-gradient(to bottom, transparent, #0000000d calc(var(--fade-t) * .15), #00000026 calc(var(--fade-t) * .3), #0000004d calc(var(--fade-t) * .45), #00000080 calc(var(--fade-t) * .6), #000000b3 calc(var(--fade-t) * .75), #000000d9 calc(var(--fade-t) * .87), #000 var(--fade-t), #000 calc(100% - var(--fade-b)), #000000d9 calc(100% - var(--fade-b) * .87), #000000b3 calc(100% - var(--fade-b) * .75), #00000080 calc(100% - var(--fade-b) * .6), #0000004d calc(100% - var(--fade-b) * .45), #00000026 calc(100% - var(--fade-b) * .3), #0000000d calc(100% - var(--fade-b) * .15), transparent);
}
.scroll-fade.x {
  -webkit-mask-image: linear-gradient(to right, transparent, #0000004d calc(var(--fade-t) * .45), #000000b3 calc(var(--fade-t) * .75), #000 var(--fade-t), #000 calc(100% - var(--fade-b)), #000000b3 calc(100% - var(--fade-b) * .75), #0000004d calc(100% - var(--fade-b) * .45), transparent);
          mask-image: linear-gradient(to right, transparent, #0000004d calc(var(--fade-t) * .45), #000000b3 calc(var(--fade-t) * .75), #000 var(--fade-t), #000 calc(100% - var(--fade-b)), #000000b3 calc(100% - var(--fade-b) * .75), #0000004d calc(100% - var(--fade-b) * .45), transparent);
}
.scroll-fade.fade-start { --fade-t: var(--scroll-fade); }
.scroll-fade.fade-end { --fade-b: var(--scroll-fade); }

/* Touch compensation: controls stay visually compact, hit area grows to 44px. */
@media (pointer: coarse) {
  .icon-btn, .btn.xs, .btn.sm, .chip, .segmented button, .stepper li, .check input, .option input, .copy-btn { position: relative; }
  .icon-btn::after, .btn.xs::after, .btn.sm::after, .chip::after, .segmented button::after, .check input::before, .copy-btn::after {
    content: ""; position: absolute; left: 50%; top: 50%; width: max(100%, var(--touch)); height: max(100%, var(--touch)); transform: translate(-50%, -50%);
  }
  /* iOS zooms into inputs under 16px */
  .field input, .field select, .field textarea, .input { font-size: 16px; }
}

/* Segmented control with a sliding thumb */
.segmented { position: relative; }
.segmented .thumb { position: absolute; top: 3px; left: 0; height: calc(100% - 6px); border-radius: var(--r-control); background: var(--selection); box-shadow: none; transition: transform var(--d-sheet) var(--ease-snap), width var(--d-sheet) var(--ease-snap); pointer-events: none; }
.segmented.has-thumb button[aria-pressed="true"] { background: transparent; box-shadow: none; }
.segmented button { position: relative; z-index: 1; }
.segmented button:disabled { cursor: not-allowed; opacity: .55; }

/* kbd hints */
kbd { display: inline-flex; align-items: center; justify-content: center; min-width: 18px; height: 18px; padding: 0 5px; border-radius: 4px; font: 500 11px/1 var(--font-mono); color: inherit; background: color-mix(in srgb, currentColor 14%, transparent); opacity: .85; }
.btn kbd { margin-left: 2px; }
@media (pointer: coarse), (max-width: 640px) { .kbd-hint { display: none !important; } }

/* Dialog (16px radius, sm 400 / md 520) */
dialog.sheet { width: min(520px, calc(100vw - 32px)); max-height: calc(100vh - 64px); padding: 0; border: 0; border-radius: var(--r-dialog); background: var(--surface-popover); color: var(--text); box-shadow: 0 0 0 var(--hair) var(--border-strong), var(--shadow-lg); overflow: auto; }
dialog.sheet.sm { width: min(400px, calc(100vw - 32px)); }
dialog.sheet::backdrop { background: #0000004d; backdrop-filter: blur(2px); }
dialog.sheet[open] { animation: sheet-in var(--d-sheet) var(--ease-gentle) both; }
dialog.sheet[open]::backdrop { animation: fade-in var(--d-base) var(--ease-out) both; }
dialog.sheet.closing { animation: sheet-out var(--d-base) var(--ease-out) both; }
dialog.sheet.closing::backdrop { animation: fade-in var(--d-base) var(--ease-out) reverse both; }
@keyframes sheet-in { from { opacity: 0; transform: translateY(8px) scale(.97); } to { opacity: 1; transform: none; } }
@keyframes sheet-out { to { opacity: 0; transform: translateY(4px) scale(.98); } }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.sheet-body { padding: 24px 24px 8px; }
.sheet-body h2 { font-size: 20px; margin-bottom: 6px; }
.sheet-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 16px 24px 20px; }
@media (max-width: 640px) {
  dialog.sheet { margin: auto auto 0; width: 100vw; max-width: 100vw; border-radius: var(--r-dialog) var(--r-dialog) 0 0; padding-bottom: env(safe-area-inset-bottom); }
  @keyframes sheet-in { from { transform: translateY(100%); } to { transform: none; } }
  .sheet-foot .btn { flex: 1; }
}

/* Toasts */
.toasts { position: fixed; left: 50%; bottom: max(24px, env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 100; display: grid; gap: 8px; justify-items: center; pointer-events: none; }
.toast { display: inline-flex; align-items: center; gap: 8px; padding: 9px 14px; border-radius: var(--r-pill); background: var(--text); color: var(--canvas); font-size: 13px; font-weight: 500; box-shadow: var(--shadow-md); animation: toast-in var(--d-sheet) var(--ease-out) both; }
.toast svg { width: 15px; height: 15px; }
.toast.out { animation: toast-out var(--d-base) var(--ease-out) both; }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px) scale(.96); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(6px); } }

/* Copy buttons morph into a check */
.copy-btn { display: inline-grid; place-items: center; width: 24px; height: 24px; padding: 0; border: 0; border-radius: var(--r-xs); background: transparent; color: var(--text-3); cursor: pointer; vertical-align: middle; transition: background-color var(--d-snap) var(--ease-out), color var(--d-snap) var(--ease-out); }
.copy-btn:hover { background: var(--hover); color: var(--text); }
.copy-btn svg { width: 14px; height: 14px; grid-area: 1 / 1; transition: transform var(--d-base) var(--ease-out), opacity var(--d-snap) var(--ease-out); }
.copy-btn .done { opacity: 0; transform: scale(.5); color: var(--ok); }
.copy-btn.copied .done { opacity: 1; transform: none; }
.copy-btn.copied .idle { opacity: 0; transform: scale(.5); }

/* Autosave indicator */
.autosave { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text-3); margin-top: var(--g3); min-height: 18px; }
.autosave .status-dot { background: var(--ok); }
.autosave.saving .status-dot { background: var(--brand); }

/* Inline helper that appears after an automatic fix (ZIP lookup, full-width conversion) */
.auto-note { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; color: var(--brand-text); margin-top: 6px; animation: rise var(--d-base) var(--ease-out) both; }
.field .spinner { position: absolute; right: 12px; top: 50%; width: 14px; height: 14px; margin-top: -7px; border-radius: 50%; border: 2px solid var(--alpha-3); border-top-color: var(--brand); animation: spin .7s linear infinite; }
.field .with-spinner { position: relative; }
.field.valid input { box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ok) 45%, var(--border-strong)); }

/* Step heading gets focus on step change, without a ring for mouse users */
.step-head h1:focus { outline: none; box-shadow: none; }

/* Preview page indicator that follows scroll */
.page-indicator { position: sticky; top: 8px; z-index: 2; display: flex; justify-content: center; height: 0; overflow: visible; pointer-events: none; }
.page-indicator span { height: 26px; padding: 0 10px; display: inline-flex; align-items: center; border-radius: var(--r-pill); background: color-mix(in srgb, var(--text) 82%, transparent); color: var(--canvas); font: 500 12px/1 var(--font-mono); backdrop-filter: blur(6px); opacity: 0; transition: opacity var(--d-base) var(--ease-out); }
.pages.scrolling .page-indicator span { opacity: 1; }

/* Retry countdown on a button */
.btn .countdown { font-variant-numeric: tabular-nums; }
.q-sep { margin: 24px 0; }
.questions .group-title { color: var(--text); font-size: 14px; }
.link-row { display: flex; align-items: center; gap: 8px; margin-top: var(--g2); padding: 8px 8px 8px 12px; border-radius: var(--r-control); background: var(--alpha-1); font: 400 12px/1.4 var(--font-mono); color: var(--text-2); max-width: 560px; }
.link-row span { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }


/* Language hints and shared safety states. */
.lang-suggest { background: var(--surface-sunken); color: var(--text); font-size: 13px; }
.lang-suggest .row { display: flex; align-items: center; gap: 12px; min-height: 44px; padding-top: 8px; padding-bottom: 8px; }
.lang-suggest span { flex: 1; min-width: 0; }
.btn.danger-ghost { color: var(--danger); background: transparent; box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--danger) 35%, transparent); }
.btn.danger-ghost:hover { background: var(--danger-subtle); }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; scroll-behavior: auto !important; } .reveal { opacity: 1; transform: none; } }