/* StopLosingReferrals.com
   Layout concept: a referral "leak inspection" — paper work-order sheets, yellow inspection tags
   with grommet holes, red leak stamps. One column on phones, two-up on wide screens. */
:root {
  --paper: #f5f6f2;
  --sheet: #ffffff;
  --ink: #14212d;
  --ink-soft: #4a5866;
  --line: #d6dbd4;
  --tag: #f2c230;
  --tag-ink: #1b1608;
  --leak: #c93b26;
  --pipe: #1d6b74;
  --pipe-soft: #e3f0ef;
  --ok: #2f7a3e;

  --f-display: "Big Shoulders Display", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Public Sans", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.6rem;
  --step-3: 2.2rem;
  --step-4: clamp(2.6rem, 7vw, 4.4rem);
  --radius: 6px;
  --wrap: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f1820; --sheet: #16222c; --ink: #e8ece6; --ink-soft: #a9b5bf; --line: #2b3a46;
    --tag: #f2c230; --tag-ink: #1b1608; --leak: #f06a52; --pipe: #5cbcc4; --pipe-soft: #183139; --ok: #6cc47c;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0f1820; --sheet: #16222c; --ink: #e8ece6; --ink-soft: #a9b5bf; --line: #2b3a46;
  --tag: #f2c230; --tag-ink: #1b1608; --leak: #f06a52; --pipe: #5cbcc4; --pipe-soft: #183139; --ok: #6cc47c;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: var(--step-0);
  line-height: 1.6;
}
img, svg { max-width: 100%; }
a { color: var(--pipe); text-underline-offset: 3px; }
a:hover { color: var(--leak); }
:focus-visible { outline: 3px solid var(--tag); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--f-display); line-height: 1.02; letter-spacing: 0.005em; text-wrap: balance; margin: 0; font-weight: 800; }
h1 { font-size: var(--step-4); text-transform: uppercase; }
h2 { font-size: var(--step-3); text-transform: uppercase; }
h3 { font-size: var(--step-2); }
p { margin: 0; }
.mono { font-family: var(--f-mono); font-size: var(--step--1); letter-spacing: 0.02em; }
.eyebrow { font-family: var(--f-mono); font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-soft); }
.lead { font-size: var(--step-1); color: var(--ink-soft); max-width: 62ch; }
.muted { color: var(--ink-soft); }
.small { font-size: var(--step--1); }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.band { padding-block: 64px; }
.band.tight { padding-block: 40px; }
.band.alt { background: var(--sheet); border-block: 1px solid var(--line); }
.band.ink { background: var(--ink); color: var(--paper); }
.band.ink .lead, .band.ink .muted, .band.ink .eyebrow { color: color-mix(in srgb, var(--paper) 75%, transparent); }
.stack { display: grid; gap: 16px; }
.stack.lg { gap: 28px; }
.prose { max-width: 66ch; display: grid; gap: 14px; }
.prose ul { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }

/* Header */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--ink); }
.site-head { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 9; background: var(--ink); color: var(--paper); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-block: 10px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--paper); text-decoration: none; font-family: var(--f-display); font-weight: 800; font-size: 1.35rem; text-transform: uppercase; letter-spacing: 0.02em; }
.brand:hover { color: var(--tag); }
.brand-mark { width: 30px; height: 30px; flex: none; }
.nav { display: flex; gap: 4px 14px; flex-wrap: wrap; align-items: center; }
.nav a { color: color-mix(in srgb, var(--paper) 82%, transparent); text-decoration: none; font-size: 0.95rem; padding: 4px 2px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--tag); }
.nav .btn { padding: 8px 14px; font-size: 0.95rem; }
@media (max-width: 720px) {
  .nav a:not(.btn) { font-size: 0.9rem; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--f-body); font-weight: 700; font-size: 1.02rem;
  padding: 13px 20px; border-radius: var(--radius); border: 2px solid transparent;
  text-decoration: none; cursor: pointer; line-height: 1.2;
}
.btn-tag { background: var(--tag); color: var(--tag-ink); border-color: var(--tag); }
.btn-tag:hover { background: color-mix(in srgb, var(--tag) 85%, #fff); color: var(--tag-ink); }
.btn-line { background: transparent; color: inherit; border-color: currentColor; }
.btn-line:hover { color: var(--tag); }
.btn-ink { background: var(--ink); color: var(--paper); }
.btn-ink:hover { color: var(--tag); }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* Hero */
.hero { padding-block: 56px 64px; }
.hero-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 40px; align-items: center; }
.hero-grid > * { min-width: 0; }
.hero h1 .hl { color: var(--leak); }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }

/* Inspection tag */
.tag-card {
  position: relative; background: var(--tag); color: var(--tag-ink);
  border-radius: 10px 10px 10px 10px;
  clip-path: polygon(14% 0, 86% 0, 100% 9%, 100% 100%, 0 100%, 0 9%);
  padding: 46px 22px 22px; box-shadow: 0 1px 0 rgba(0,0,0,.08);
  max-width: 400px; margin-inline: auto; width: 100%;
}
.tag-card::before { /* grommet */
  content: ""; position: absolute; top: 14px; left: 50%; width: 22px; height: 22px; margin-left: -11px;
  border-radius: 50%; background: var(--paper); box-shadow: 0 0 0 5px color-mix(in srgb, var(--tag-ink) 18%, transparent);
}
.tag-card .tag-head { display: flex; justify-content: space-between; gap: 8px; border-bottom: 2px solid var(--tag-ink); padding-bottom: 8px; margin-bottom: 10px; }
.tag-card .tag-title { font-family: var(--f-display); font-weight: 800; font-size: 1.5rem; text-transform: uppercase; line-height: 1; }
.tag-card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: 0.98rem; }
.tag-card li { display: grid; grid-template-columns: 1fr auto; gap: 10px; border-bottom: 1px dashed color-mix(in srgb, var(--tag-ink) 35%, transparent); padding-bottom: 5px; }
.tag-card .st { font-family: var(--f-mono); font-size: 0.78rem; font-weight: 600; letter-spacing: .06em; align-self: center; }
.tag-card .st.bad { color: #9c1e0e; }
.tag-card .st.good { color: #1e5a2a; }
.stamp {
  display: inline-block; font-family: var(--f-display); font-weight: 800; text-transform: uppercase;
  color: var(--leak); border: 3px solid var(--leak); border-radius: 4px; padding: 2px 10px; letter-spacing: .06em;
  transform: rotate(-4deg); font-size: 1.3rem;
}
.tag-card .stamp { color: #9c1e0e; border-color: #9c1e0e; position: absolute; right: 16px; bottom: 16px; background: color-mix(in srgb, var(--tag) 70%, transparent); }

/* Leak map */
.leak-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.leak {
  background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; display: grid; gap: 8px; align-content: start;
}
.band.alt .leak { background: var(--paper); }
.leak .where { font-family: var(--f-mono); font-size: 0.75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--pipe); }
.leak h3 { font-size: 1.45rem; }
.leak p { color: var(--ink-soft); font-size: 0.98rem; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: s; }
.steps > div { border-top: 4px solid var(--ink); padding-top: 14px; display: grid; gap: 8px; align-content: start; }
.band.ink .steps > div { border-top-color: var(--tag); }
.steps .n { font-family: var(--f-mono); font-size: 0.8rem; letter-spacing: .14em; color: var(--leak); }
.band.ink .steps .n { color: var(--tag); }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }

/* Two-up */
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: center; }
.two > * { min-width: 0; }
@media (max-width: 860px) { .two { grid-template-columns: 1fr; } }

/* Keychain mock */
.keyfob { display: flex; justify-content: center; }
.fob {
  position: relative; width: 210px; aspect-ratio: 5 / 7; max-width: 100%;
  background: var(--ink); color: var(--paper); border-radius: 26px 26px 34px 34px;
  display: grid; justify-items: center; align-content: end; gap: 8px; padding: 18px 16px 22px; text-align: center;
  box-shadow: 0 18px 30px -18px rgba(0,0,0,.45);
}
.fob::before { content: ""; position: absolute; top: 14px; left: 50%; width: 26px; height: 26px; margin-left: -13px; border-radius: 50%; background: var(--paper); box-shadow: 0 0 0 4px #9aa3ab; }
.fob .qr { width: 112px; height: 112px; background: #fff; border-radius: 8px; padding: 8px; }
.fob .qr svg { width: 100%; height: 100%; display: block; }
.fob .fob-name { font-family: var(--f-display); font-weight: 800; font-size: 1.15rem; text-transform: uppercase; line-height: 1; }
.fob .fob-sub { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: .1em; color: var(--tag); }
.ring { position: absolute; top: -34px; left: 50%; width: 54px; height: 54px; margin-left: -27px; border-radius: 50%; border: 5px solid #9aa3ab; }

/* Calculator */
.calc { background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: grid; gap: 16px; }
.calc .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.calc .row > * { min-width: 0; }
@media (max-width: 560px) { .calc .row { grid-template-columns: 1fr; } }
.calc .out { font-family: var(--f-display); font-weight: 800; font-size: var(--step-3); line-height: 1; color: var(--leak); font-variant-numeric: tabular-nums; }

/* Forms */
label { display: grid; gap: 6px; font-weight: 600; font-size: 0.95rem; }
input, select, textarea {
  font: inherit; font-weight: 400; color: var(--ink); background: var(--paper);
  border: 1.5px solid var(--line); border-radius: var(--radius); padding: 11px 12px; width: 100%;
}
.band.alt input, .band.alt select, .band.alt textarea { background: var(--paper); }
input:focus, select:focus, textarea:focus { border-color: var(--pipe); outline: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--pipe) 25%, transparent); }
textarea { min-height: 110px; resize: vertical; }
.form { display: grid; gap: 14px; background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form .row > * { min-width: 0; }
@media (max-width: 560px) { .form .row { grid-template-columns: 1fr; } }
.consent-row { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: start; font-weight: 400; }
.consent-row input { width: 20px; height: 20px; margin-top: 2px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-note { font-size: 0.9rem; color: var(--ink-soft); }
.form-msg { border-radius: var(--radius); padding: 12px 14px; font-weight: 600; }
.form-msg.ok { background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); }
.form-msg.warn { background: color-mix(in srgb, var(--tag) 30%, transparent); color: var(--ink); }
.form-msg.err { background: color-mix(in srgb, var(--leak) 15%, transparent); color: var(--leak); }

/* Pricing */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: stretch; }
.tiers > * { min-width: 0; }
@media (max-width: 920px) { .tiers { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; } }
.tier { background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: grid; gap: 14px; align-content: start; position: relative; }
.tier.pick { border: 3px solid var(--ink); }
.tier .flag { position: absolute; top: -14px; left: 20px; background: var(--tag); color: var(--tag-ink); font-family: var(--f-mono); font-size: .75rem; font-weight: 600; letter-spacing: .1em; padding: 4px 10px; border-radius: 3px; text-transform: uppercase; }
.tier .name { font-family: var(--f-display); font-weight: 800; font-size: 2rem; text-transform: uppercase; line-height: 1; }
.tier .price { font-family: var(--f-display); font-weight: 800; font-size: 3rem; line-height: 1; font-variant-numeric: tabular-nums; }
.tier .price small { font-family: var(--f-body); font-size: 1rem; font-weight: 500; color: var(--ink-soft); }
.tier ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.tier li { padding-left: 26px; position: relative; font-size: 0.98rem; }
.tier li::before { content: ""; position: absolute; left: 2px; top: 0.45em; width: 12px; height: 7px; border-left: 3px solid var(--ok); border-bottom: 3px solid var(--ok); transform: rotate(-45deg); }
.tier li.plus::before { border: 0; width: 14px; height: 14px; top: .3em; background: var(--tag); border-radius: 50%; transform: none; }
.tier .btn { width: 100%; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--sheet); }
table { border-collapse: collapse; width: 100%; min-width: 620px; font-size: 0.95rem; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--f-mono); font-size: .76rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); font-weight: 600; }
td.c, th.c { text-align: center; }
tbody tr:last-child td { border-bottom: 0; }
.yes { color: var(--ok); font-weight: 700; }
.no { color: var(--ink-soft); }

/* FAQ */
details { border-bottom: 1px solid var(--line); padding-block: 14px; }
details summary { cursor: pointer; font-weight: 700; font-size: 1.08rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; font-family: var(--f-mono); font-size: 1.3rem; line-height: 1; color: var(--pipe); }
details[open] summary::after { content: "–"; }
details > div { padding-top: 10px; color: var(--ink-soft); max-width: 70ch; display: grid; gap: 10px; }

/* Leak check quiz */
.quiz { display: grid; gap: 22px; }
.q-group { background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: grid; gap: 12px; }
.q-group h3 { font-size: 1.5rem; }
.q { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; border-top: 1px dashed var(--line); padding-top: 12px; }
.q > span { min-width: 0; }
.yn { display: inline-flex; border: 1.5px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.yn input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.yn label { padding: 8px 14px; font-weight: 700; cursor: pointer; font-size: .92rem; display: block; }
.yn input:checked + label.y { background: var(--ok); color: #fff; }
.yn input:checked + label.n { background: var(--leak); color: #fff; }
.yn input:checked + label.u { background: var(--ink-soft); color: var(--paper); }
.yn input:focus-visible + label { outline: 3px solid var(--tag); outline-offset: -3px; }
@media (max-width: 520px) { .q { grid-template-columns: 1fr; } }
.score-box { position: sticky; bottom: 0; z-index: 5; background: var(--ink); color: var(--paper); padding-block: 12px calc(12px + env(safe-area-inset-bottom, 0px)); }
.score-box .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.meter { height: 10px; background: color-mix(in srgb, var(--paper) 20%, transparent); border-radius: 99px; overflow: hidden; width: min(260px, 100%); }
.meter i { display: block; height: 100%; width: 0; background: var(--tag); transition: width .3s; }
.result { display: grid; gap: 16px; }
.grade { font-family: var(--f-display); font-weight: 800; font-size: 5rem; line-height: .9; }
.grade-row { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }
.area-bars { display: grid; gap: 8px; }
.area-bars div { display: grid; grid-template-columns: 9.5em 1fr 3em; gap: 10px; align-items: center; font-size: .95rem; }
.area-bars b { display: block; height: 10px; border-radius: 99px; background: var(--line); overflow: hidden; }
.area-bars b i { display: block; height: 100%; background: var(--pipe); }
.area-bars span:last-child { font-family: var(--f-mono); font-size: .85rem; text-align: right; font-variant-numeric: tabular-nums; }
.leak-list { margin: 0; padding-left: 1.2em; display: grid; gap: 8px; }

/* Guide */
.toc { display: flex; flex-wrap: wrap; gap: 8px; }
.toc a { font-family: var(--f-mono); font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; text-decoration: none; padding: 7px 11px; border: 1.5px solid var(--line); border-radius: 99px; color: var(--ink); }
.toc a:hover { border-color: var(--pipe); color: var(--pipe); }
.guide-sec { display: grid; gap: 16px; scroll-margin-top: 80px; }
.item { background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; display: grid; gap: 8px; }
.item .top { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.item h3 { font-size: 1.4rem; }
.item .tiers-in { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--pipe); background: var(--pipe-soft); padding: 3px 8px; border-radius: 3px; }
.item p { color: var(--ink-soft); }
.item .fix { color: var(--ink); }
.item .fix b { color: var(--ok); }

/* Fair play */
.fair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.fair > div { background: var(--sheet); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; display: grid; gap: 10px; align-content: start; }
.fair ul { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }
@media (max-width: 760px) { .fair { grid-template-columns: 1fr; } }

/* Pass-it-on demo page */
.pass { max-width: 460px; margin: 0 auto; display: grid; gap: 14px; }
.pass-card { background: var(--sheet); border: 1px solid var(--line); border-radius: 14px; padding: 22px; display: grid; gap: 14px; text-align: center; }
.pass-card .btn { width: 100%; }
.contact-line { font-family: var(--f-mono); font-size: 1.05rem; user-select: all; }

/* Footer */
.site-foot { background: var(--ink); color: color-mix(in srgb, var(--paper) 80%, transparent); padding-block: 44px calc(30px + env(safe-area-inset-bottom, 0px)); font-size: .95rem; }
.site-foot a { color: var(--paper); }
.site-foot a:hover { color: var(--tag); }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px; }
.foot-grid > * { min-width: 0; }
.foot-grid h4 { margin: 0 0 10px; font-family: var(--f-mono); font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; color: var(--tag); font-weight: 600; }
.foot-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
@media (max-width: 760px) { .foot-grid { grid-template-columns: 1fr; } }
.foot-base { margin-top: 30px; padding-top: 16px; border-top: 1px solid color-mix(in srgb, var(--paper) 18%, transparent); display: flex; gap: 10px 20px; flex-wrap: wrap; justify-content: space-between; font-size: .85rem; }

.preview-flag { background: var(--tag); color: var(--tag-ink); font-family: var(--f-mono); font-size: .78rem; letter-spacing: .06em; text-align: center; padding: 6px 16px; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; scroll-behavior: auto !important; } }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }