/* DataStone — datastone.us
   Palette is the product's measured ChromePalette:
   stone-navy #162733, razor-blue #32C8D8 (fills only on light surfaces),
   razor-ink #165A61 (the text/outline form of the accent on light surfaces). */

:root {
  --navy: #162733;
  --navy-deep: #0E1A23;
  --navy-soft: #1F3443;
  --razor: #32C8D8;
  --razor-dark: #33CBDB;
  --ink: #165A61;
  --ink-soft: #1E7680;
  --paper: #FFFFFF;
  --paper-2: #F4F6F8;
  --paper-3: #E9EDF1;
  --line: #D6DDE3;
  --text: #15202B;
  --text-2: #45535F;
  --text-3: #6B7884;
  --amber: #B45309;
  --amber-bg: #FEF3E2;
  --red: #B1044A;
  --red-bg: #FDECF2;
  --green: #0F6B3C;
  --green-bg: #E6F4EC;
  --hl: #FFF2A8;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(21, 32, 43, .06), 0 12px 32px -16px rgba(21, 32, 43, .25);
  --max: 1160px;
  --gutter: clamp(16px, 4vw, 40px);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.55;
  color: var(--text);
  background: var(--paper);
  font-feature-settings: "cv11", "ss01";
}
img, svg { display: block; max-width: 100%; }
a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3, h4 { margin: 0; line-height: 1.12; letter-spacing: -0.015em; color: var(--text); }
p { margin: 0; }
.wrap { width: min(var(--max), 100% - 2 * var(--gutter)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--navy);
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 64px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: #fff; font-weight: 700; font-size: 20px; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.brand .word b { font-weight: 800; }
.brand .word span { font-weight: 500; opacity: .92; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav a { color: rgba(255,255,255,.86); padding: 8px 12px; border-radius: 8px; font-weight: 500; font-size: 15px; white-space: nowrap; }
.nav a:hover { background: rgba(255,255,255,.08); text-decoration: none; color: #fff; }
.nav a.cta { background: var(--razor); color: #0B1A1E; font-weight: 700; margin-left: 6px; }
.nav a.cta:hover { background: #4ED4E2; }
.nav-toggle { display: none; background: none; border: 1px solid rgba(255,255,255,.25); color: #fff; border-radius: 8px; padding: 8px 10px; font: inherit; font-size: 14px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 22px; border-radius: 10px;
  font-weight: 700; font-size: 16px; border: 1px solid transparent; cursor: pointer;
  font-family: inherit; transition: background .15s, border-color .15s, transform .05s;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--razor); color: #0B1A1E; }
.btn-primary:hover { background: #4ED4E2; }
.btn-ink { background: var(--ink); color: #fff; }
.btn-ink:hover { background: var(--ink-soft); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.35); }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.06); }
.btn-outline { background: #fff; color: var(--ink); border-color: var(--ink); }
.btn-outline:hover { background: var(--paper-2); }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(50,200,216,.18), transparent 60%),
    radial-gradient(800px 500px at -10% 110%, rgba(50,200,216,.10), transparent 60%),
    var(--navy);
  color: #fff;
  padding: clamp(56px, 9vw, 112px) 0 clamp(48px, 7vw, 96px);
  overflow: hidden;
}
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--razor-dark);
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--razor-dark); }
.hero h1 { font-size: clamp(36px, 5vw, 60px); font-weight: 800; color: #fff; margin: 18px 0 20px; letter-spacing: -0.03em; }
.hero h1 em { font-style: normal; color: var(--razor-dark); }
.hero .lede { font-size: clamp(17px, 1.4vw, 20px); color: rgba(255,255,255,.82); max-width: 54ch; }
.hero .lede b { color: #fff; font-weight: 600; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 28px; font-size: 14px; color: rgba(255,255,255,.7); }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--razor-dark); }

/* The migration demo card */
.demo-card {
  background: #fff; color: var(--text);
  border-radius: 18px; box-shadow: 0 30px 80px -30px rgba(0,0,0,.6), 0 0 0 1px rgba(255,255,255,.08);
  padding: 22px 22px 18px; font-size: 15.5px;
}
.demo-card header { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line); margin-bottom: 6px; }
.demo-card header h3 { font-size: 15px; font-weight: 700; }
.demo-card header small { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--text-3); font-weight: 700; }
.demo-row { display: grid; grid-template-columns: 112px 1fr; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--paper-3); align-items: start; }
.demo-row:last-child { border-bottom: 0; }
.demo-row .tag { font-family: var(--mono); font-size: 11px; line-height: 1.35; letter-spacing: .04em; text-transform: uppercase; color: var(--text-3); padding-top: 4px; }
.demo-row .tag b { display: block; color: var(--ink); font-weight: 700; }
.demo-row .tag.bad b { color: var(--red); }
.sentence { line-height: 1.75; }
.hl { background: var(--hl); padding: 2px 3px; border-radius: 3px; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.hl-bad { background: #FFE9A3; }
.ins { padding: 1px 5px; border: 1.5px solid var(--red); border-radius: 4px; color: var(--red); font-weight: 600; margin: 0 2px; white-space: nowrap; }
.chip { display: inline-block; font-family: var(--mono); font-size: 10px; letter-spacing: .08em; padding: 1px 6px; border-radius: 3px; background: var(--red-bg); color: var(--red); vertical-align: 2px; margin-left: 2px; }
.verdict { display: flex; gap: 8px; align-items: flex-start; margin-top: 8px; font-size: 13.5px; font-weight: 600; }
.verdict.bad { color: var(--red); }
.verdict.good { color: var(--green); }
.verdict svg { flex: none; width: 16px; height: 16px; margin-top: 3px; }

/* ---------- Sections ---------- */
section { padding: clamp(56px, 8vw, 104px) 0; }
section.alt { background: var(--paper-2); }
.section-head { max-width: 720px; margin-bottom: clamp(28px, 4vw, 48px); }
.section-head .eyebrow { color: var(--ink); }
.section-head .eyebrow::before { background: var(--ink); }
.section-head h2 { font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; margin-top: 14px; letter-spacing: -0.025em; }
.section-head p { margin-top: 14px; font-size: 18px; color: var(--text-2); }

/* Problem */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
.prose { font-size: 18px; color: var(--text-2); }
.prose p + p { margin-top: 16px; }
.prose b { color: var(--text); font-weight: 600; }
.pull {
  border-left: 4px solid var(--razor); background: #fff; padding: 20px 24px; border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: var(--shadow); font-size: 20px; font-weight: 600; line-height: 1.45; color: var(--text);
}
.pull small { display: block; margin-top: 10px; font-size: 14px; font-weight: 500; color: var(--text-3); }

/* Feature grid */
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 26px 28px;
  display: flex; flex-direction: column; gap: 12px;
}
.card .num {
  width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center;
  background: var(--navy); color: var(--razor-dark); font-weight: 800; font-size: 14px; font-family: var(--mono);
}
.card h3 { font-size: 19px; font-weight: 700; }
.card p { color: var(--text-2); font-size: 16px; }
.card .icon { width: 40px; height: 40px; border-radius: 10px; background: var(--paper-2); display: grid; place-items: center; color: var(--ink); }
.card .icon svg { width: 22px; height: 22px; }

/* Screenshot */
.device {
  background: var(--navy); border-radius: 22px; padding: 14px;
  box-shadow: 0 40px 90px -40px rgba(21,32,43,.6);
}
.device img { border-radius: 12px; width: 100%; height: auto; }
.caption { font-size: 14px; color: var(--text-3); margin-top: 14px; }
.callouts { display: grid; gap: 18px; margin-top: 8px; }
.callout { display: grid; grid-template-columns: 28px 1fr; gap: 14px; align-items: start; }
.callout .dot { width: 28px; height: 28px; border-radius: 50%; background: var(--razor); color: #0B1A1E; display: grid; place-items: center; font-weight: 800; font-size: 13px; font-family: var(--mono); }
.callout h4 { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.callout p { color: var(--text-2); font-size: 15.5px; }

/* Checklists */
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.checks li { display: grid; grid-template-columns: 22px 1fr; gap: 12px; align-items: start; color: var(--text-2); font-size: 16.5px; }
.checks li b { color: var(--text); font-weight: 600; }
.checks li svg { width: 22px; height: 22px; color: var(--ink); margin-top: 2px; }
.status { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; padding: 2px 7px; border-radius: 4px; margin-right: 8px; vertical-align: 2px; white-space: nowrap; }
.status.now { background: var(--green-bg); color: var(--green); }
.status.test { background: var(--amber-bg); color: var(--amber); }
.status.plan { background: var(--paper-3); color: var(--text-2); }

/* Patent band */
.band {
  background: var(--navy); color: #fff; border-radius: 18px; padding: clamp(28px, 4vw, 44px);
  display: grid; grid-template-columns: minmax(0, 220px) 1fr; gap: clamp(24px, 4vw, 48px); align-items: center;
}
.band .label { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--razor-dark); }
.band h3 { color: #fff; font-size: 24px; font-weight: 800; margin-top: 8px; }
.band p { color: rgba(255,255,255,.82); font-size: 17px; }
.band p + p { margin-top: 12px; }
.band b { color: #fff; font-weight: 600; }

/* CTA */
.cta-block { text-align: center; }
.cta-block h2 { font-size: clamp(28px, 3.4vw, 40px); font-weight: 800; letter-spacing: -0.025em; }
.cta-block p { font-size: 18px; color: var(--text-2); margin: 14px auto 28px; max-width: 56ch; }
.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

/* Footer */
.site-footer { background: var(--navy-deep); color: rgba(255,255,255,.72); padding: 40px 0 32px; font-size: 14px; }
.site-footer .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
.site-footer h4 { color: #fff; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 12px; }
.site-footer a { color: rgba(255,255,255,.85); }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.site-footer .fine { grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,.1); padding-top: 18px; margin-top: 8px; font-size: 12.5px; color: rgba(255,255,255,.55); line-height: 1.6; }

/* ---------- Contact page ---------- */
.page-head { background: var(--navy); color: #fff; padding: clamp(48px, 7vw, 88px) 0 clamp(40px, 6vw, 72px); }
.page-head h1 { color: #fff; font-size: clamp(34px, 4.5vw, 52px); font-weight: 800; margin-top: 16px; letter-spacing: -0.03em; }
.page-head p { color: rgba(255,255,255,.8); font-size: 19px; margin-top: 14px; max-width: 60ch; }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: clamp(22px, 3vw, 34px); box-shadow: var(--shadow); }
.form-card h2 { font-size: 24px; font-weight: 800; }
.form-card > p { color: var(--text-2); margin-top: 8px; font-size: 16px; }
form { display: grid; gap: 18px; margin-top: 24px; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; color: var(--text); }
label small { font-weight: 500; color: var(--text-3); }
input, select, textarea {
  font: inherit; font-size: 16px; color: var(--text);
  background: #fff; border: 1px solid #B8C2CC; border-radius: 10px; padding: 12px 14px; min-height: 48px; width: 100%;
}
textarea { min-height: 128px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--razor); outline-offset: 1px; border-color: var(--ink); }
.consent { grid-template-columns: 22px 1fr; display: grid; gap: 12px; align-items: start; font-weight: 500; font-size: 14.5px; color: var(--text-2); }
.consent input { width: 22px; height: 22px; min-height: 0; margin-top: 1px; accent-color: var(--ink); }
.form-note { font-size: 13.5px; color: var(--text-3); }
.form-status { display: none; padding: 14px 16px; border-radius: 10px; font-size: 15.5px; font-weight: 600; }
.form-status.ok { display: block; background: var(--green-bg); color: var(--green); }
.form-status.err { display: block; background: var(--red-bg); color: var(--red); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.team { display: grid; gap: 20px; }
.person { display: grid; grid-template-columns: 112px 1fr; gap: 20px; align-items: center; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.person img { width: 112px; height: 112px; object-fit: cover; object-position: center 20%; border-radius: 12px; }
.person .ph { width: 112px; height: 112px; border-radius: 12px; background: var(--paper-2); display: grid; place-items: center; color: var(--ink); font-weight: 800; font-size: 32px; letter-spacing: -0.02em; border: 1px dashed var(--line); }
.person h3 { font-size: 19px; font-weight: 700; }
.person .role { color: var(--ink); font-weight: 600; font-size: 14px; letter-spacing: .02em; margin-top: 2px; }
.person .bio { color: var(--text-2); font-size: 15px; margin-top: 8px; }
.person a.mail { display: inline-block; margin-top: 8px; font-size: 15px; font-weight: 600; }
.aside-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.aside-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.aside-card p, .aside-card li { color: var(--text-2); font-size: 15.5px; }
.aside-card ul { margin: 0; padding-left: 18px; display: grid; gap: 6px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero .wrap, .split, .contact-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .band { grid-template-columns: 1fr; }
  .site-footer .wrap { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 1000px) {
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--navy); flex-direction: column; align-items: stretch; padding: 10px var(--gutter) 18px; gap: 4px; border-bottom: 1px solid rgba(255,255,255,.1); }
  .nav.open { display: flex; }
  .nav a { padding: 12px; }
  .nav a.cta { margin: 8px 0 0; text-align: center; }
  .nav-toggle { display: inline-block; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .grid, .grid-2, .row-2 { grid-template-columns: 1fr; }
  .demo-row { grid-template-columns: 1fr; gap: 6px; }
  .demo-card { padding: 18px 16px 14px; }
  .person { grid-template-columns: 88px 1fr; }
  .person img, .person .ph { width: 88px; height: 88px; }
  .site-footer .wrap { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ---------- Motion: hero migration card (plays once) ---------- */
.replay { background: none; border: 1px solid var(--line); color: var(--text-3); font: inherit; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; cursor: pointer; }
.replay:hover { color: var(--ink); border-color: var(--ink); }
.ins-word { display: inline-block; white-space: nowrap; vertical-align: bottom; }
html.js .demo-card:not(.play) .ins-word { max-width: 0; opacity: 0; overflow: hidden; }
html.js .demo-card:not(.play) .verdict { opacity: 0; transform: translateY(4px); }
html.js .demo-card .ins-word { transition: max-width .7s cubic-bezier(.2,.7,.2,1), opacity .4s; max-width: 10em; opacity: 1; }
html.js .demo-card.reset .ins-word, html.js .demo-card.reset .verdict { transition: none !important; }
html.js .demo-card.reset .ins { animation: none !important; }
html.js .demo-card .verdict { transition: opacity .5s, transform .5s; }
html.js .demo-card.play .step-2 .ins-word { transition-delay: .9s; }
html.js .demo-card.play .step-2 .verdict { transition-delay: 1.7s; }
html.js .demo-card.play .step-3 .ins-word { transition-delay: 2.5s; }
html.js .demo-card.play .step-3 .verdict { transition-delay: 3.3s; }
html.js .demo-card.play .step-3 .ins { animation: ins-pop .5s 2.6s both; }
@keyframes ins-pop { 0% { transform: scale(.7); } 60% { transform: scale(1.08); } 100% { transform: scale(1); } }

/* ---------- Motion: scroll reveal ---------- */
html.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); transition-delay: calc(var(--i, 0) * 70ms); }
html.js .reveal.in { opacity: 1; transform: none; }
.site-header { transition: box-shadow .2s; }
.site-header.scrolled { box-shadow: 0 8px 24px -12px rgba(0,0,0,.5); }

@media (prefers-reduced-motion: reduce) {
  html.js .demo-card:not(.play) .ins-word, html.js .demo-card:not(.play) .verdict { max-width: none; opacity: 1; transform: none; overflow: visible; }
  html.js .demo-card .ins-word, html.js .demo-card .verdict, html.js .demo-card .ins { transition: none !important; animation: none !important; }
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  .replay { display: none; }
}

/* ---------- Show Change demo ---------- */
.show-demo { background: var(--navy); border-radius: 22px; padding: 14px; box-shadow: 0 40px 90px -40px rgba(21,32,43,.6); }
.mock-top { display: flex; justify-content: space-between; align-items: baseline; gap: 6px 12px; flex-wrap: wrap; color: #fff; padding: 4px 6px 12px; font-size: 13px; }
.mock-title { font-weight: 700; }
.mock-rev { color: rgba(255,255,255,.7); font-family: var(--mono); font-size: 11.5px; }
.mock-page { background: #fff; border-radius: 12px; padding: 22px 22px 18px; font-size: 15px; line-height: 1.55; color: var(--text); min-height: 300px; }
.mock-h { font-weight: 800; font-size: 20px; margin-bottom: 14px; letter-spacing: -0.02em; }
.mock-line { position: relative; padding-left: 16px; margin-bottom: 14px; }
.mock-line.dim { color: var(--text-3); }
.cbar { position: absolute; left: 0; top: 2px; bottom: 2px; width: 3px; background: var(--text); border-radius: 2px; }
.mock-line.dim .cbar { background: var(--line); }
.show-btn { display: inline-block; background: var(--razor); color: #0B1A1E; border: 1px solid var(--ink); border-radius: 6px; font: inherit; font-size: 13px; font-weight: 700; padding: 2px 10px; margin-left: 6px; cursor: pointer; vertical-align: 1px; position: relative; }
.show-btn.ghost { background: var(--paper-3); border-color: var(--line); color: var(--text-3); cursor: default; }
.show-btn:not(.ghost):hover { background: #4ED4E2; }
.show-btn.pulse::after { content: ""; position: absolute; inset: -6px; border-radius: 10px; border: 2px solid var(--razor); animation: pulse 1.2s ease-out 2; }
@keyframes pulse { 0% { opacity: .9; transform: scale(.9); } 100% { opacity: 0; transform: scale(1.25); } }
.show-pop { display: grid; grid-template-rows: 0fr; opacity: 0; transition: grid-template-rows .5s cubic-bezier(.2,.7,.2,1), opacity .4s, margin .5s; margin: 0 0 0 16px; }
.show-pop > * { min-height: 0; }
.show-pop.open { grid-template-rows: 1fr; opacity: 1; margin-bottom: 16px; }
.show-pop .pop-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--paper-2); }
.pop-col { padding: 14px 16px; font-size: 14.5px; }
.pop-col.new { background: #fff; border-left: 1px solid var(--line); }
.pop-col h5 { margin: 0 0 8px; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink); font-weight: 700; }
.pop-col h5 span { color: var(--text-3); letter-spacing: 0; text-transform: none; font-family: var(--mono); font-weight: 500; }
.pop-col del { color: var(--red); background: var(--red-bg); text-decoration: line-through; text-decoration-thickness: 1.5px; padding: 0 2px; border-radius: 2px; }
.pop-col ins { text-decoration: none; border: 1.5px solid var(--red); color: var(--red); border-radius: 3px; padding: 0 3px; font-weight: 600; }
.pop-foot { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 12.5px; color: var(--text-3); padding: 10px 4px 0; }
.pop-goto { color: var(--ink); font-weight: 600; }
.show-demo .caption { color: rgba(255,255,255,.6); padding: 12px 6px 0; margin: 0; }

/* ---------- Read-file steps ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; counter-reset: step; }
.steps li { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 24px 26px; position: relative; }
.step-n { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--navy); color: var(--razor-dark); font-family: var(--mono); font-weight: 700; font-size: 14px; margin-bottom: 14px; }
.steps h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.steps p { color: var(--text-2); font-size: 15.5px; }

/* ---------- Notepad illustration ---------- */
.note-card { margin: 0; background: #FFFDF5; border: 1px solid #E7E1C9; border-radius: 18px; padding: 22px 22px 18px; box-shadow: var(--shadow); font-size: 15px; }
.note-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; border-bottom: 1px solid #E7E1C9; padding-bottom: 12px; margin-bottom: 14px; }
.note-title { font-weight: 700; font-size: 16px; }
.note-meta { font-size: 12.5px; color: var(--text-3); font-family: var(--mono); }
.note-typed { font-family: "Inter", sans-serif; color: var(--text); margin: 12px 0 8px; }
.note-src { margin: 0 0 6px; padding: 12px 14px; background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--ink); border-radius: 0 10px 10px 0; }
.note-src p { font-size: 14.5px; color: var(--text); }
.note-src footer { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-top: 8px; font-size: 12px; }
.src-chip { font-family: var(--mono); color: var(--text-3); }
.src-state { font-weight: 700; color: var(--green); }
.note-src.changed { border-left-color: var(--amber); background: var(--amber-bg); }
.note-src.changed .src-state { color: var(--amber); }
.note-src mark { background: transparent; border: 1.5px solid var(--amber); border-radius: 3px; padding: 0 3px; color: var(--amber); font-weight: 600; }
.note-card .caption { margin-top: 12px; }

@media (max-width: 980px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 680px) { .steps { grid-template-columns: 1fr; } .show-pop .pop-cols { grid-template-columns: 1fr; } .pop-col.new { border-left: 0; border-top: 1px solid var(--line); } .mock-page { padding: 18px 14px; } }

/* ---------- Search illustration ---------- */
.search-demo .mock-page { min-height: 0; }
.q-field { display: flex; align-items: center; gap: 10px; border: 1.5px solid var(--ink); border-radius: 10px; padding: 10px 14px; font-size: 16px; color: var(--text); background: var(--paper-2); }
.q-field svg { width: 20px; height: 20px; color: var(--ink); flex: none; }
.q-field span::after { content: ""; display: inline-block; width: 1.5px; height: 1em; background: var(--ink); vertical-align: -2px; margin-left: 2px; animation: caret 1s steps(1) infinite; }
@keyframes caret { 50% { opacity: 0; } }
.results { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 10px; }
.results li { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; font-size: 14.5px; }
.results li:first-child { border-color: var(--ink); box-shadow: 0 0 0 3px rgba(50,200,216,.18); }
.results li p { color: var(--text); }
.results li p b { background: var(--hl); font-weight: 600; padding: 0 2px; border-radius: 2px; }
.results footer { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-top: 6px; font-size: 12px; }
.results .go { color: var(--ink); font-weight: 600; }
.results-foot { margin-top: 12px; font-size: 13px; color: var(--text-2); border-left: 3px solid var(--razor); padding-left: 10px; }
@media (prefers-reduced-motion: reduce) { .q-field span::after { animation: none; } }

/* ---------- Show Change: real list of changes ---------- */
.mock-sub { color: var(--text-2); font-size: 14px; margin-bottom: 8px; }
.mock-page .mock-h + .mock-sub { margin-top: -6px; }
.mock-h + .changes, .mock-sub + .mock-h { margin-top: 18px; }
.changes .mock-line { padding-left: 0; margin-bottom: 10px; display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.changes .mock-line > span:first-child { flex: 1 1 auto; min-width: 0; }
.changes .show-btn { flex: none; margin: 2px 0 0; }
.changes .show-pop { margin-left: 0; }
.show-btn.pulse::after { animation-iteration-count: 3; }
.pop-none { color: var(--text-3); font-style: italic; }