/* Living Scroll PDF — 和纸长卷 · 朱印手帖 (Washi Scroll & Coral Seal).
   Visual direction proposed by 芥末先生 (2026-10-25); built into the real pages here. */

:root {
  --paper: #f6f2e9;
  --sheet: #fbf9f4;
  --tint: #ede7da;
  --ink: #1c1a17;
  --ink-soft: #4a453e;
  --ink-faint: #8a8276;
  --line: #d9d1c3;
  --coral: #e05a4f;
  --coral-ink: #c8463c;     /* coral for small text: higher contrast on paper */
  --coral-soft: #f9e6e3;
  --rod: #d7c3a0;
  --on-ink: #f6f2e9;
  --serif: "Songti SC", "Hiragino Mincho ProN", "YuMincho", "Noto Serif CJK SC", "Noto Serif SC", Georgia, serif;
  --serif-en: "Iowan Old Style", "Palatino", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, "JetBrains Mono", monospace;
  --measure: 40rem;
  --frame: 80rem;
  --pad: 32px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #1a1815; --sheet: #211f1b; --tint: #26231e;
    --ink: #ece6da; --ink-soft: #c2baac; --ink-faint: #8d8578; --line: #38332b;
    --coral: #e8776c; --coral-ink: #ee8a80; --coral-soft: #3a2422;
    --rod: #7a6648; --on-ink: #1a1815;
  }
}
:root[data-theme="dark"] {
  --paper: #1a1815; --sheet: #211f1b; --tint: #26231e;
  --ink: #ece6da; --ink-soft: #c2baac; --ink-faint: #8d8578; --line: #38332b;
  --coral: #e8776c; --coral-ink: #ee8a80; --coral-soft: #3a2422;
  --rod: #7a6648; --on-ink: #1a1815;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--coral-ink); text-underline-offset: .2em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--coral); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.3; letter-spacing: -.005em; margin: 0; }

/* ---------- language toggle ---------- */
html.lang-zh [lang="en"]:not(html) { display: none !important; }
html.lang-en [lang="zh-CN"]:not(html) { display: none !important; }
html.lang-en h1, html.lang-en h2, html.lang-en h3 { font-family: var(--serif-en); }

/* ---------- the frame: two hairlines running the full page height ---------- */
.wrap {
  max-width: var(--frame); margin: 0 auto; padding: 0 var(--pad);
  border-left: 1px solid var(--line); border-right: 1px solid var(--line);
}
.measure { max-width: var(--measure); }

/* ---------- header ---------- */
.site-head {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  position: sticky; top: 0; z-index: 10;
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.site-head .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px 24px; min-height: 76px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px;
}
.brand { display: flex; align-items: baseline; gap: 10px; color: var(--ink); text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 7px; align-self: center; box-shadow: 0 0 0 1px var(--line); }
.brand b { font: 600 20px/1 var(--serif); }
.brand small { font: 12px/1 var(--mono); color: var(--ink-soft); letter-spacing: .02em; }
.nav { display: flex; align-items: center; gap: 4px 28px; flex-wrap: wrap; font-size: 15px; }
.nav a { color: var(--ink); text-decoration: none; padding: 6px 0; position: relative; }
.nav a:hover { color: var(--coral-ink); }
.nav a[aria-current="page"] { color: var(--coral-ink); }
.nav a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--coral);
}
.lang-btn {
  font: 12px/1 var(--mono); color: var(--ink-soft); background: var(--sheet); margin-left: 12px;
  border: 1px solid var(--line); border-radius: 3px; padding: 8px 11px; cursor: pointer;
}
.lang-btn:hover { border-color: var(--ink-faint); color: var(--ink); }

/* ---------- hero ---------- */
.hero .wrap { padding: 0; }
.hero-grid { display: grid; grid-template-columns: 1fr; }
.hero-text { padding: 48px var(--pad) 44px; }
.hero-art {
  padding: 40px var(--pad) 48px; border-top: 1px solid var(--line);
  display: grid; place-items: center;
}
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.4fr 1fr; }
  .hero-text { padding: 52px 48px 64px var(--pad); }
  .hero-art { border-top: 0; border-left: 1px solid var(--line); padding: 40px var(--pad); }
}
.eyebrow {
  display: flex; align-items: center; gap: 8px;
  font: 600 13px/1.4 var(--sans); color: var(--coral-ink); letter-spacing: .02em; margin: 0 0 22px;
}
.eyebrow::before { content: ""; width: 8px; height: 8px; background: var(--coral); flex: none; }
.hero h1 { font-size: clamp(40px, 6vw, 52px); line-height: 1.15; }
.hero h1 .sub {
  display: block; font-size: clamp(24px, 3.3vw, 32px); line-height: 1.35; margin-top: 10px; color: var(--ink);
}
.tagline { font: italic 16px/1.5 var(--serif-en); color: var(--ink-soft); margin: 10px 0 28px; }
.lede { font-size: 17px; line-height: 1.85; color: var(--ink); margin: 0 0 32px; max-width: 30rem; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font: 600 15px/1 var(--sans); text-decoration: none; padding: 15px 26px; border-radius: 3px;
  border: 1px solid var(--ink); color: var(--ink); background: transparent; min-width: 140px;
}
.btn .arr { font-family: var(--sans); font-weight: 400; }
.btn.primary { background: var(--ink); color: var(--on-ink); }
.btn.primary:hover { background: var(--coral); border-color: var(--coral); color: #fff; }
.btn:not(.primary):hover { border-color: var(--coral); color: var(--coral-ink); }
.btn[aria-disabled="true"] {
  cursor: not-allowed; border-color: var(--line); color: var(--ink-faint); background: var(--tint); font-weight: 500;
}
.note { font-size: 13.5px; line-height: 1.7; color: var(--ink-soft); margin: 26px 0 0; }
.note + .meta { margin-top: 6px; }
.meta { font: 12px/1.6 var(--mono); color: var(--ink-faint); margin: 0; }

/* the scroll illustration: rods, a sheet of chat bubbles, a dashed capture frame, the icon and a seal */
.scroll-fig { position: relative; margin: 0; width: min(312px, 100%); padding: 0 22px; }
.scroll-fig .rod {
  height: 20px; margin: 0 -22px; border-radius: 4px; background: var(--rod);
  border: 1.5px solid var(--ink); position: relative; z-index: 2;
}
.scroll-fig .sheet {
  background: var(--sheet); border-left: 1.5px solid var(--ink); border-right: 1.5px solid var(--ink);
  padding: 18px 18px 22px; position: relative;
}
.bubble {
  height: 28px; border-radius: 4px; margin: 12px 0;
  background: var(--tint); border: 1px solid var(--line);
}
.bubble.me { margin-left: auto; background: var(--coral-soft); border-color: color-mix(in srgb, var(--coral) 60%, var(--line)); }
.bubble.w35 { width: 40%; } .bubble.w45 { width: 50%; } .bubble.w60 { width: 64%; } .bubble.w75 { width: 76%; } .bubble.w85 { width: 86%; }
.capture {
  position: absolute; left: -12px; right: -12px; top: 64px; height: 210px;
  border: 1.5px dashed var(--coral); pointer-events: none;
}
.capture > span {
  position: absolute; left: -1px; top: -22px; background: var(--coral); color: #fff;
  font: 600 11px/1 var(--mono); padding: 5px 7px; border-radius: 2px; white-space: nowrap;
}
.fig-icon {
  position: absolute; left: -44px; top: 46%; width: 88px; height: 88px; z-index: 3;
  border-radius: 20px; background: #fff; box-shadow: 0 0 0 1px var(--line), 0 10px 24px -14px rgba(40, 30, 20, .45);
}
.seal {
  position: absolute; right: -58px; bottom: 14px; z-index: 3; width: 58px; height: 74px;
  border: 1.5px solid var(--coral); color: var(--coral-ink); background: var(--paper);
  font: 600 20px/1.25 var(--serif); display: grid; place-items: center; text-align: center; border-radius: 2px;
}
@media (max-width: 520px) {
  .fig-icon { left: -26px; width: 68px; height: 68px; border-radius: 16px; }
  .seal { right: -20px; width: 48px; height: 62px; font-size: 17px; }
}

/* ---------- sections ---------- */
section.block { border-top: 1px solid var(--line); }
section.block > .wrap { padding-top: 56px; padding-bottom: 60px; }
section.block h2 { font-size: clamp(24px, 3.2vw, 30px); margin-bottom: 12px; }
.label {
  display: block; font: 12px/1.4 var(--mono); color: var(--coral-ink); letter-spacing: .06em; margin-bottom: 14px;
  text-transform: uppercase;
}
.label i { font-style: normal; color: var(--ink-faint); margin: 0 .6em; }
.section-lede { color: var(--ink-soft); margin: 0 0 36px; }

.cols { display: grid; gap: 32px; grid-template-columns: 1fr; }
@media (min-width: 760px) { .cols.two { grid-template-columns: 1fr 1fr; gap: 40px 56px; } }
.item h3 { font-size: 20px; margin-bottom: 10px; }
.item p { margin: 0; color: var(--ink-soft); font-size: 15px; }
.item p + p { margin-top: 8px; }

/* the numbered band: columns split by full-height hairlines, flush with the frame */
.band { border-top: 1px solid var(--line); }
.band > .wrap { padding: 0; }
.band .cols.three { gap: 0; }
.band .item { padding: 40px var(--pad) 48px; }
.band .item + .item { border-top: 1px solid var(--line); }
@media (min-width: 860px) {
  .band .cols.three { grid-template-columns: repeat(3, 1fr); }
  .band .item + .item { border-top: 0; border-left: 1px solid var(--line); }
}
.band-head { padding: 52px var(--pad) 0; }
.band-head .section-lede { max-width: 46rem; }
.band-head + .cols .item { padding-top: 32px; }

.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; max-width: var(--measure); }
.steps li { counter-increment: s; position: relative; padding: 0 0 22px 52px; }
.steps li::before {
  content: counter(s, decimal-leading-zero); position: absolute; left: 0; top: 3px;
  font: 600 13px/1.6 var(--mono); color: var(--coral-ink);
}
.steps li::after { content: ""; position: absolute; left: 26px; top: 14px; width: 14px; height: 1px; background: var(--line); }
kbd { font: 500 .85em var(--mono); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 3px; padding: 1px 6px; background: var(--sheet); }
code { font: .88em var(--mono); background: var(--tint); padding: 1px 5px; border-radius: 3px; }

.callout {
  border: 1px solid var(--line); border-left: 3px solid var(--coral); background: var(--sheet);
  padding: 18px 22px; margin: 32px 0 0; max-width: var(--measure); font-size: 15px;
}
.callout p { margin: 0; color: var(--ink-soft); }

/* ---------- pricing ---------- */
.page-head > .wrap { padding-top: 44px; padding-bottom: 28px; }
.page-head h1 { font-size: clamp(30px, 4.6vw, 40px); margin-bottom: 12px; }
.page-head .lede { color: var(--ink-soft); font-size: 16px; max-width: none; margin: 0; }
.plans-wrap > .wrap { padding-top: 0; padding-bottom: 48px; }
.plans { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .plans { grid-template-columns: repeat(3, 1fr); } }
.plan {
  background: var(--sheet); border: 1px solid var(--line); border-radius: 4px; padding: 28px 26px 26px;
  display: flex; flex-direction: column; min-width: 0; position: relative;
}
.plan.featured { border: 1.5px solid var(--coral); box-shadow: inset 0 5px 0 var(--coral), 0 8px 26px -18px rgba(224, 90, 79, .5); }
.badge {
  position: absolute; top: 22px; right: 22px; font: 600 12px/1 var(--sans); color: var(--coral-ink);
  border: 1px solid var(--coral); background: var(--coral-soft); padding: 5px 9px; border-radius: 3px;
}
.plan h3 { font-size: 24px; line-height: 1.2; }
.plan .tag { font-size: 12.5px; color: var(--ink-soft); margin: 4px 0 22px; }
.price { font: 600 38px/1.1 var(--serif); }
.price small { font-size: .9em; font-weight: 600; }
.price-alt { font-size: 14px; color: var(--ink-soft); margin: 10px 0 0; }
.offer {
  font-size: 12.5px; font-weight: 600; color: var(--coral-ink); background: var(--coral-soft);
  padding: 6px 10px; border-radius: 2px; margin: 12px 0 0;
}
.plan ul { list-style: none; padding: 20px 0 0; margin: 22px 0 28px; flex: 1; border-top: 1px solid var(--line); }
.plan li { padding: 3px 0 3px 16px; position: relative; font-size: 14.5px; line-height: 1.7; }
.plan li::before { content: ""; position: absolute; left: 0; top: .78em; width: 5px; height: 5px; background: var(--coral); }
.plan .btn { width: 100%; }
.plans-note { margin-top: 22px; }

.compare-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 16px; }
.compare-head h2 { margin: 0 !important; font-size: clamp(24px, 3.2vw, 30px) !important; }
.compare-head > span { font: 600 15px/1 var(--serif-en); letter-spacing: .04em; color: var(--ink-soft); text-transform: uppercase; }
table.compare { width: 100%; border-collapse: collapse; font-size: 14.5px; }
table.compare th, table.compare td { text-align: left; padding: 11px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.compare thead th { background: var(--tint); font-weight: 600; font-size: 13.5px; color: var(--ink); }
table.compare td { color: var(--ink-soft); }
table.compare td:first-child { color: var(--ink); }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.faq { margin: 0; }
.faq dt { font: 600 17px/1.5 var(--serif); margin-top: 26px; }
.faq dd { margin: 6px 0 0; color: var(--ink-soft); max-width: var(--measure); font-size: 15px; }

/* ---------- legal ---------- */
.legal > .wrap { padding-top: 52px; padding-bottom: 72px; max-width: var(--frame); }
.legal .doc { max-width: var(--measure); }
.legal h1 { font-size: clamp(30px, 5vw, 40px); margin-bottom: 8px; }
.legal .updated { font: 12px/1.5 var(--mono); color: var(--ink-faint); margin: 0 0 32px; }
.legal h2 { font-size: 20px; margin: 40px 0 10px; }
.legal p, .legal li { color: var(--ink-soft); font-size: 15.5px; }
.legal ul, .legal ol { padding-left: 1.2em; }
.legal li { margin: 6px 0; }
.legal li::marker { color: var(--coral); }
.legal .summary { background: var(--sheet); border: 1px solid var(--line); border-left: 3px solid var(--coral); padding: 16px 20px; }
.legal .summary p { margin: 0; color: var(--ink); }

/* ---------- footer ---------- */
.site-foot { border-top: 1px solid var(--line); font-size: 13.5px; line-height: 1.8; color: var(--ink-faint); }
.site-foot .wrap { display: flex; flex-wrap: wrap; gap: 18px 40px; justify-content: space-between; padding-top: 32px; padding-bottom: 44px; }
.site-foot nav { display: flex; flex-wrap: wrap; gap: 6px 20px; }
.site-foot a { color: var(--ink-soft); text-decoration: none; }
.site-foot a:hover { color: var(--coral-ink); }
.site-foot p { margin: 0; }

@media (max-width: 640px) {
  :root { --pad: 20px; }
  .wrap { border-left: 0; border-right: 0; }
  .site-head .wrap { min-height: 60px; }
  .brand small { display: none; }
  .nav { gap: 2px 18px; font-size: 14px; }
  .lang-btn { margin-left: 0; }
  .hero-text { padding-top: 36px; }
  .hero h1 .sub { font-size: 22px; }
  .btn { min-width: 0; flex: 1; padding: 14px 16px; }
  section.block > .wrap { padding-top: 44px; padding-bottom: 48px; }
}
@media print {
  .site-head { position: static; }
  .site-head nav, .lang-btn, .site-foot nav { display: none; }
}