:root {
  --paper: #ffffff;
  --ink: #1e222b;
  --grey: #6b7280;
  --rule: #e3e5ea;
  --pencil: #2350c8;
  --pencil-ink: #ffffff;
  --mark: #ffe7a3;
  --soft: #f4f5f8;
  --measure: 68ch;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #15181e; --ink: #e8eaef; --grey: #9aa1ad; --rule: #2b303a;
    --pencil: #7d9cff; --pencil-ink: #0e1220; --mark: #5c4a12; --soft: #1c2028;
  }
  :root:not([data-theme="light"]) .score { background: #fff; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  font-size: 17px; line-height: 1.75; font-feature-settings: "palt" 0;
}
a { color: var(--pencil); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible {
  outline: 3px solid var(--pencil); outline-offset: 3px; border-radius: 4px;
}
img, svg { max-width: 100%; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* header */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 0; }
.brand { font-size: 17px; color: var(--ink); text-decoration: none; letter-spacing: .01em; }
.brand b { font-weight: 700; }
.top nav { display: flex; gap: 20px; font-size: 15px; flex-wrap: wrap; }
.top nav a { color: var(--grey); text-decoration: none; }
.top nav a:hover { color: var(--ink); }

/* hero */
.hero { padding: 40px 0 24px; }
.hero h1 {
  font-size: clamp(34px, 5.6vw, 64px); line-height: 1.18; font-weight: 700; margin: 0 0 20px;
  letter-spacing: -.01em; max-width: 15em; word-break: keep-all; overflow-wrap: anywhere;
}
.hero h1 span { display: inline-block; }
.hero .lead { font-size: clamp(17px, 1.8vw, 20px); color: var(--ink); max-width: 36em; margin: 0 0 28px; }
.buyline { display: flex; align-items: center; flex-wrap: wrap; gap: 14px 22px; margin-bottom: 8px; }
.price { font-size: 30px; font-weight: 700; }
.price small { font-size: 14px; font-weight: 400; color: var(--grey); margin-left: 6px; }
.btn {
  appearance: none; border: 0; border-radius: 999px; padding: 14px 28px; font: inherit; font-weight: 700;
  font-size: 17px; background: var(--pencil); color: var(--pencil-ink); cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.btn[disabled] { background: var(--rule); color: var(--grey); cursor: default; filter: none; }
.btn.ghost { background: transparent; color: var(--pencil); box-shadow: inset 0 0 0 2px var(--pencil); }
.note { font-size: 14px; color: var(--grey); }

/* the transformation */
.demo { margin: 44px 0 16px; display: grid; grid-template-columns: 172px 1fr; column-gap: 24px; }
.demo .tag { font-size: 14px; color: var(--grey); padding-top: 14px; line-height: 1.5; word-break: keep-all; }
.demo .tag b { display: block; color: var(--ink); font-size: 16px; }
.score { background: #fff; border-radius: 6px; }
.score img { display: block; width: 100%; height: auto; }
.bracket { grid-column: 2; position: relative; height: 54px; }
.bracket svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.bracket span {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); background: var(--paper);
  color: var(--pencil); padding: 0 12px; font-size: 15px; font-weight: 700; white-space: nowrap;
}
.score.full { position: relative; }
.score.full .mark {
  position: absolute; background: var(--mark); mix-blend-mode: multiply; left: 75.6%; width: 22.6%;
  top: 0; bottom: 0; border-radius: 3px;
}
.score.full .mark::after {
  content: attr(data-label); position: absolute; right: 0; bottom: -30px; font-size: 13px; color: var(--grey);
  white-space: nowrap; mix-blend-mode: normal;
}
@media (prefers-reduced-motion: no-preference) {
  .bracket path { stroke-dasharray: 1400; stroke-dashoffset: 1400; animation: draw 1.1s .3s ease-out forwards; }
  .score.full { opacity: 0; animation: show .6s 1.1s ease-out forwards; }
  @keyframes draw { to { stroke-dashoffset: 0; } }
  @keyframes show { to { opacity: 1; } }
}

/* sections */
section.wrap { padding-top: 88px; padding-bottom: 8px; }
@media (max-width: 520px) { section.wrap { padding-top: 64px; } }
h2 { font-size: clamp(26px, 3.2vw, 36px); line-height: 1.3; margin: 0 0 24px; font-weight: 700; }
h3 { font-size: 19px; margin: 0 0 6px; }
p { max-width: var(--measure); }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: s; }
.steps li { counter-increment: s; border-top: 2px solid var(--ink); padding-top: 14px; }
.steps li::before { content: counter(s); font-size: 40px; font-weight: 700; line-height: 1; display: block; margin-bottom: 10px; color: var(--pencil); }
.steps p { margin: 0; color: var(--ink); }
.steps h3 { margin-bottom: 8px; }

.spec { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 48px; margin: 0; }
.spec > div { padding: 18px 0; border-top: 1px solid var(--rule); }
.spec dt { font-weight: 700; margin-bottom: 4px; }
.spec dd { margin: 0; color: var(--ink); }
.spec dd .opt { color: var(--grey); }

.shot { margin: 8px 0 0; }
.shot img { display: block; width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--rule); }
.shot figcaption { font-size: 14px; color: var(--grey); margin-top: 10px; }

.buybox { display: grid; grid-template-columns: 1fr auto; gap: 24px 48px; align-items: center;
  border-top: 2px solid var(--ink); border-bottom: 2px solid var(--ink); padding: 32px 0; }
.buybox ul { margin: 8px 0 0; padding-left: 1.2em; }

details { border-top: 1px solid var(--rule); padding: 14px 0; max-width: 80ch; }
details:last-of-type { border-bottom: 1px solid var(--rule); }
summary { cursor: pointer; font-weight: 700; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::before { content: "+"; display: inline-block; width: 1.4em; color: var(--pencil); font-weight: 700; }
details[open] summary::before { content: "−"; }
details p { margin: 10px 0 0 1.4em; }

footer { margin-top: 96px; padding: 28px 0 40px; border-top: 1px solid var(--rule); font-size: 14px; color: var(--grey); }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-bottom: 12px; }
footer a { color: var(--grey); }

/* text pages (legal, support, download) */
.doc { max-width: 760px; padding-top: 24px; }
.doc h1 { font-size: clamp(26px, 3.4vw, 36px); line-height: 1.3; margin: 8px 0 24px; }
.doc table { border-collapse: collapse; width: 100%; font-size: 16px; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 12px 0; border-top: 1px solid var(--rule); }
.doc th { width: 34%; padding-right: 20px; font-weight: 700; }
.doc h2 { font-size: 22px; margin: 36px 0 10px; }
.keybox { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: clamp(18px, 3vw, 26px); letter-spacing: .04em;
  background: var(--soft); padding: 14px 18px; border-radius: 8px; display: inline-block; user-select: all; }
.field { display: flex; gap: 12px; flex-wrap: wrap; margin: 12px 0; }
.field input { font: inherit; padding: 12px 14px; border: 1px solid var(--grey); border-radius: 8px; min-width: min(100%, 360px);
  background: var(--paper); color: var(--ink); font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.status { min-height: 1.5em; color: var(--grey); }

@media (max-width: 820px) {
  .demo { grid-template-columns: 1fr; }
  .demo .tag { padding: 0 0 8px; }
  .bracket { grid-column: 1; }
  .steps, .spec { grid-template-columns: 1fr; }
  .buybox { grid-template-columns: 1fr; }
  .score.full .mark::after { bottom: -26px; font-size: 12px; }
}
@media (max-width: 520px) {
  .wrap { padding: 0 16px; }
  .top nav a.hide-s { display: none; }
}