/* ==========================================================================
   HOME v5 — lower-section rework layer (loaded ONLY by /review-home-v5/).
   macOS design discipline over the approved porcelain/cobalt system:
   - two elevation tiers only (card, raise)
   - 4/8px spacing rhythm
   - translucent material ONLY where it expresses hierarchy (sheet scrim +
     sheet header on scroll)
   - 150–300ms motion, reduced-motion parity
   - one primary CTA per section, 44px targets
   ========================================================================== */

:root {
  --v5-radius: 14px;
  --v5-radius-lg: 16px;
  --v5-hair: var(--border);
  --v5-shadow-card: 0 1px 2px rgba(13, 15, 20, 0.05), 0 4px 16px rgba(13, 15, 20, 0.05);
  --v5-shadow-raise: 0 2px 6px rgba(13, 15, 20, 0.07), 0 16px 48px rgba(13, 15, 20, 0.13);
  --v5-ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

.v5-card {
  background: var(--bg-raise);
  border: 1px solid var(--v5-hair);
  border-radius: var(--v5-radius);
  box-shadow: var(--v5-shadow-card);
}

/* ------------------------------------------------------------ steps ----- */
.v5-steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-top: 40px; }
.v5-step { padding: 24px; display: flex; flex-direction: column; gap: 12px; }
.v5-step .idx {
  font: 700 0.8rem/1 var(--font-mono, ui-monospace);
  letter-spacing: 0.06em;
  color: var(--cobalt-deep);
  background: var(--cobalt-wash);
  border-radius: 8px;
  padding: 8px 10px;
  align-self: flex-start;
}
.v5-step h3 { font-size: var(--text-h4); letter-spacing: -0.01em; display: flex; align-items: baseline; gap: 8px; }
.v5-step h3 .tag { font: 600 0.72rem/1 var(--font-mono, ui-monospace); color: var(--ink-faint); }
.v5-step p { font-size: var(--text-small); color: var(--ink-soft); }
.v5-steps-cta { margin-top: 32px; }

/* --------------------------------------------------------- platforms ---- */
.v5-matrix { margin-top: 40px; overflow: hidden; }
.v5-mrow {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) auto auto;
  gap: 16px;
  align-items: center;
  padding: 16px 24px;
  min-height: 56px;
}
.v5-mrow + .v5-mrow { border-top: 1px solid var(--v5-hair); }
.v5-mrow .sid {
  font: 600 0.72rem/1.2 var(--font-mono, ui-monospace);
  color: var(--ink-faint);
  background: var(--bg-inset);
  border-radius: 6px;
  padding: 6px 8px;
  justify-self: start;
  max-width: 96px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.v5-mrow .sname { font-weight: 620; font-size: var(--text-small); }
.v5-mrow .srec { font-size: var(--text-micro); color: var(--ink-faint); text-align: right; }
.v5-legend { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 16px; font-size: var(--text-micro); color: var(--ink-faint); }

/* ---------------------------------------------------------- keycaps ----- */
.v5-context { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 40px; }
.v5-context .v5-card { padding: 24px; }
.v5-context h3 { font-size: var(--text-h4); }
.v5-context p { font-size: var(--text-small); color: var(--ink-soft); margin-top: 8px; }
.v5-context .note { margin-top: 12px; font-size: var(--text-micro); color: var(--ink-faint); }
.v5-keys { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 32px; }
.v5-key { padding: 24px; display: flex; flex-direction: column; gap: 8px; }
.v5-kbd {
  align-self: flex-start;
  font: 640 0.86rem/1 var(--font-mono, ui-monospace);
  color: var(--ink-strong);
  background: linear-gradient(180deg, #fff, #f1f4fb);
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 8px;
  padding: 10px 12px;
  min-width: 44px;
  text-align: center;
  box-shadow: 0 1px 0 rgba(13, 15, 20, 0.04);
}
.v5-key .kname { font-weight: 640; font-size: var(--text-small); margin-top: 4px; display: flex; align-items: center; gap: 8px; }
.v5-key .kname svg { width: 14px; height: 14px; color: var(--cobalt); flex: none; }
.v5-key p { font-size: var(--text-micro); color: var(--ink-soft); }

/* ----------------------------------------------------------- quotes ----- */
.v5-quotes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 40px; }
.v5-quote { padding: 24px; display: flex; flex-direction: column; gap: 16px; }
.v5-quote blockquote {
  font-family: var(--font-serif, "EB Garamond", serif);
  font-size: 1.02rem;
  line-height: 1.55;
  color: var(--ink);
  flex: 1;
}
.v5-quote figcaption { display: flex; align-items: center; gap: 10px; font-size: var(--text-micro); color: var(--ink-faint); }
.v5-quote .init {
  width: 28px; height: 28px; flex: none;
  display: grid; place-content: center;
  border-radius: 8px;
  background: var(--bg-inset);
  color: var(--ink-soft);
  font: 700 0.72rem/1 var(--font-mono, ui-monospace);
}

/* ----------------------------------------------------------- reward ----- */
.v5-reward { padding: 48px; display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 48px; box-shadow: var(--v5-shadow-raise); border-radius: var(--v5-radius-lg); }
.v5-reward .points { list-style: none; padding: 0; margin-top: 24px; display: grid; gap: 12px; }
.v5-reward .points li { display: flex; gap: 10px; font-size: var(--text-small); color: var(--ink-soft); }
.v5-reward .points svg { width: 15px; height: 15px; flex: none; color: var(--ok, #1d9a6c); margin-top: 3px; }
.v5-field { margin-bottom: 16px; }
.v5-field label { display: block; font-size: var(--text-micro); font-weight: 640; margin-bottom: 6px; color: var(--ink); }
.v5-field .input {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: #fff;
  padding: 0 14px;
  font-size: var(--text-small);
  transition: border-color 0.16s var(--v5-ease), box-shadow 0.16s var(--v5-ease);
}
.v5-field .input:focus { outline: none; border-color: var(--cobalt); box-shadow: 0 0 0 3px var(--selection); }
.v5-form .help { font-size: var(--text-micro); color: var(--ink-soft); margin-top: 12px; }
.v5-form .legal { font-size: var(--text-micro); color: var(--ink-faint); margin-top: 12px; }

/* ------------------------------------------------------------ plans ----- */
.v5-plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 40px; align-items: stretch; }
.v5-plan { padding: 32px 24px 24px; display: flex; flex-direction: column; gap: 0; position: relative; }
.v5-plan.is-featured { border-color: var(--cobalt); box-shadow: 0 0 0 1px var(--cobalt), var(--v5-shadow-raise); }
.v5-plan .flag {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--cobalt); color: #fff;
  font: 640 0.68rem/1 var(--font-sans, inherit);
  letter-spacing: 0.05em; text-transform: uppercase;
  border-radius: 999px; padding: 6px 12px; white-space: nowrap;
}
.v5-plan .pname { font-weight: 680; font-size: var(--text-h4); }
.v5-plan .pmeta { font-size: var(--text-micro); color: var(--ink-faint); margin-top: 4px; min-height: 2.1em; }
.v5-plan .price { display: flex; align-items: baseline; gap: 6px; margin-top: 16px; }
.v5-plan .price .amt { font-size: 2.1rem; font-weight: 740; letter-spacing: -0.03em; }
.v5-plan .price .per { font-size: var(--text-micro); color: var(--ink-faint); }
.v5-plan .psub { font-size: var(--text-micro); color: var(--ink-soft); margin-top: 4px; min-height: 3em; }
.v5-plan ul { list-style: none; padding: 0; margin: 16px 0 24px; display: grid; gap: 10px; flex: 1; }
.v5-plan li { display: flex; gap: 9px; font-size: var(--text-micro); color: var(--ink-soft); }
.v5-plan li svg { width: 13px; height: 13px; flex: none; color: var(--ok, #1d9a6c); margin-top: 2px; }
.v5-plan .btn { width: 100%; }
.v5-plan .pfoot { font-size: var(--text-micro); color: var(--ink-faint); text-align: center; margin-top: 12px; min-height: 1.2em; }
.v5-plans-notes { margin-top: 32px; text-align: center; font-size: var(--text-micro); color: var(--ink-faint); display: grid; gap: 4px; }

/* -------------------------------------------------------------- faq ----- */
.v5-faq { margin-top: 40px; padding: 8px 32px; }
.v5-faq-cols { column-count: 2; column-gap: 48px; }
.v5-faq details { break-inside: avoid; border-bottom: 1px solid var(--v5-hair); }
.v5-faq details:last-child { border-bottom: 0; }
.v5-faq summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  min-height: 56px; padding: 16px 0;
  font-weight: 620; font-size: var(--text-small);
}
.v5-faq summary::-webkit-details-marker { display: none; }
.v5-faq summary::after {
  content: ""; width: 8px; height: 8px; flex: none;
  border-right: 1.5px solid var(--ink-faint); border-bottom: 1.5px solid var(--ink-faint);
  transform: rotate(45deg);
  transition: transform 0.2s var(--v5-ease);
  margin-right: 4px;
}
.v5-faq details[open] summary::after { transform: rotate(225deg); }
.v5-faq .a { padding: 0 24px 16px 0; font-size: var(--text-small); color: var(--ink-soft); }

/* ---------------------------------------------------------- closing ----- */
.v5-closing {
  position: relative; overflow: hidden;
  border-radius: var(--v5-radius-lg);
  background:
    radial-gradient(120% 160% at 50% -20%, #3567e8 0%, #2858d6 42%, #16337f 100%);
  box-shadow: var(--v5-shadow-raise);
  text-align: center;
  padding: 64px 32px;
  color: #fff;
}
.v5-closing::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 42%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.1) 100%);
  pointer-events: none;
}
.v5-closing .tile {
  width: 88px; height: 88px; margin: 0 auto 24px;
  display: grid; place-content: center;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 22px;
}
.v5-closing .tile img { width: 64px; height: 64px; }
.v5-closing h2 { font-size: var(--text-h2); letter-spacing: -0.02em; color: #fff; }
.v5-closing .lede-n { margin-top: 12px; color: rgba(255, 255, 255, 0.92); max-width: 52ch; margin-inline: auto; }
.v5-closing .acts { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 32px; position: relative; z-index: 1; }
.v5-closing .micro { margin-top: 24px; font-size: var(--text-micro); color: rgba(255, 255, 255, 0.75); }

/* ------------------------------------------------------------ sheet ----- */
dialog.v5-sheet {
  border: 0; padding: 0; margin: 0 auto;
  top: 72px;
  width: min(560px, calc(100vw - 32px));
  background: var(--bg-raise);
  border-radius: var(--v5-radius-lg);
  box-shadow: var(--v5-shadow-raise), 0 0 0 1px rgba(13, 15, 20, 0.06);
  overflow: hidden;
}
dialog.v5-sheet::backdrop {
  background: rgba(13, 15, 20, 0.32);
  backdrop-filter: blur(8px) saturate(1.1);
  -webkit-backdrop-filter: blur(8px) saturate(1.1);
}
@media (prefers-reduced-motion: no-preference) {
  dialog.v5-sheet[open] { animation: v5-sheet-in 0.24s var(--v5-ease); }
  dialog.v5-sheet[open]::backdrop { animation: v5-scrim-in 0.24s ease-out; }
  @keyframes v5-sheet-in { from { opacity: 0; transform: translateY(-8px) scale(0.985); } to { opacity: 1; transform: none; } }
  @keyframes v5-scrim-in { from { opacity: 0; } to { opacity: 1; } }
}
.v5-sheet-head {
  display: flex; align-items: center; gap: 16px;
  padding: 24px 24px 16px;
  position: sticky; top: 0;
  background: color-mix(in srgb, var(--bg-raise) 86%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
}
.v5-sheet.is-scrolled .v5-sheet-head { border-bottom-color: var(--v5-hair); }
.v5-sheet-head .app {
  width: 48px; height: 48px; flex: none;
  border-radius: 12px;
  background: var(--bg-inset);
  display: grid; place-content: center;
}
.v5-sheet-head .app img { width: 34px; height: 34px; }
.v5-sheet-head h2 { font-size: var(--text-h4); letter-spacing: -0.01em; }
.v5-sheet-head .sub { font-size: var(--text-micro); color: var(--ink-faint); margin-top: 2px; }
.v5-sheet-close {
  margin-left: auto; flex: none;
  width: 44px; height: 44px;
  display: grid; place-content: center;
  border: 0; border-radius: 10px;
  background: transparent; color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.16s var(--v5-ease);
}
.v5-sheet-close:hover { background: var(--bg-hover); }
.v5-sheet-close svg { width: 16px; height: 16px; }
.v5-sheet-body { padding: 8px 24px 24px; max-height: min(64vh, 560px); overflow: auto; }
.v5-progress {
  height: 4px; border-radius: 999px; overflow: hidden;
  background: var(--bg-inset);
  position: relative;
  margin: 8px 0 24px;
}
.v5-progress::after {
  content: ""; position: absolute; inset: 0; width: 36%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cobalt-bright), var(--cobalt));
}
@media (prefers-reduced-motion: no-preference) {
  .v5-progress::after { animation: v5-indet 1.4s var(--v5-ease) infinite; }
  @keyframes v5-indet { from { transform: translateX(-110%); } to { transform: translateX(310%); } }
}
.v5-inst { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; counter-reset: v5step; }
.v5-inst li {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 16px;
  border: 1px solid var(--v5-hair);
  border-radius: 12px;
  background: var(--bg-page);
}
.v5-inst li::before {
  counter-increment: v5step;
  content: counter(v5step);
  width: 28px; height: 28px; flex: none;
  display: grid; place-content: center;
  border-radius: 999px;
  background: var(--cobalt-wash); color: var(--cobalt-deep);
  font: 700 0.78rem/1 var(--font-mono, ui-monospace);
}
.v5-inst .it { font-weight: 620; font-size: var(--text-small); }
.v5-inst .id { font-size: var(--text-micro); color: var(--ink-soft); margin-top: 2px; }
.v5-sheet-foot {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 24px;
  border-top: 1px solid var(--v5-hair);
  background: var(--bg-page);
  font-size: var(--text-micro); color: var(--ink-soft);
}
.v5-sheet-foot .spacer { flex: 1; }
.v5-sheet-foot a { min-height: 44px; display: inline-flex; align-items: center; }

/* ------------------------------------------------------- responsive ----- */
@media (max-width: 1080px) {
  .v5-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .v5-keys { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .v5-quotes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .v5-reward { grid-template-columns: 1fr; padding: 32px; gap: 32px; }
}
@media (max-width: 860px) {
  .v5-plans { grid-template-columns: 1fr; max-width: 440px; margin-inline: auto; }
  .v5-plan.is-featured { order: -1; }
  .v5-faq-cols { column-count: 1; }
  .v5-context { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .v5-steps, .v5-keys, .v5-quotes { grid-template-columns: 1fr; }
  .v5-mrow { grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: auto auto; padding: 12px 16px; }
  .v5-mrow .sid { grid-row: 2; max-width: none; }
  .v5-mrow .srec { display: none; }
  .v5-faq { padding: 0 16px; }
  .v5-reward { padding: 24px; }
  .v5-closing { padding: 48px 16px; }
  dialog.v5-sheet { top: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .v5-field .input, .v5-sheet-close, .v5-faq summary::after { transition: none; }
}