:root {
  --bg: #fffdf6;
  --paper: #ffffff;
  --ink: #1b1730;
  --muted: #6b6580;
  --accent: #e23e8c;
  --accent-soft: #fde8f1;
  --yellow: #ffd84d;
  --teal: #2a9d8f;
  --line: #e8e2d6;
  --shadow: 0 14px 34px rgba(27, 23, 48, 0.1);
  --radius: 18px;
  --shell: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(640px 420px at 92% 2%, rgba(255, 216, 77, 0.24), transparent 62%),
    radial-gradient(560px 420px at 4% 18%, rgba(226, 62, 140, 0.09), transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3 { margin: 0; line-height: 1.25; font-weight: 700; }

.page-shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 253, 246, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.nav-shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  object-fit: cover;
  border: 2px solid var(--ink);
}

.primary-nav { margin-left: auto; }

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14.5px;
  color: var(--muted);
}

.primary-nav a {
  position: relative;
  padding: 5px 0;
  transition: color 0.2s ease;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 12%;
  right: 12%;
  bottom: 0;
  height: 5px;
  border-radius: 3px;
  background: var(--yellow);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.22s ease;
  z-index: -1;
}

.primary-nav a:hover { color: var(--ink); }
.primary-nav a:hover::after { transform: scaleX(1); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 12px;
  background: var(--ink);
  color: #fffdf6;
  font-size: 14.5px;
  font-weight: 700;
  box-shadow: 4px 4px 0 var(--yellow);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.nav-download svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-download:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--yellow);
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 2px solid var(--ink);
  border-radius: 12px;
  background: var(--paper);
  cursor: pointer;
  padding: 0;
  place-items: center;
}

.menu-toggle span {
  display: block;
  width: 16px;
  height: 2px;
  margin: 3px auto;
  border-radius: 2px;
  background: var(--ink);
}

/* ---------- hero ---------- */
.hero {
  padding: 62px 0 54px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 46px;
  align-items: center;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 8px;
  background: var(--yellow);
  font-size: 13px;
  font-weight: 700;
  transform: rotate(-1.5deg);
}

.hero-kicker b { font-weight: 800; }

.hero h1 {
  margin: 20px 0 12px;
  font-size: clamp(36px, 5.2vw, 58px);
  letter-spacing: -0.01em;
}

.hero-subtitle {
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 700;
  color: var(--accent);
}

.hero-subtitle::after {
  content: "";
  display: block;
  width: 62px;
  height: 6px;
  margin-top: 8px;
  border-radius: 4px;
  background: var(--yellow);
}

.hero-lead {
  margin-top: 18px;
  max-width: 470px;
  color: var(--muted);
  font-size: 15.5px;
}

.hero-actions {
  margin-top: 26px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: 13px;
  font-weight: 800;
  font-size: 15.5px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.button-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 5px 5px 0 var(--ink);
}

.button-primary:hover {
  transform: translate(3px, 3px);
  box-shadow: 2px 2px 0 var(--ink);
}

.text-link {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 2px dashed var(--line);
  padding-bottom: 2px;
}

.text-link:hover { color: var(--ink); }

.hero-tags {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
}

.hero-tags li {
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.hero-tags b { color: var(--teal); }

/* ---------- hero deck ---------- */
.remix-deck {
  position: relative;
  display: grid;
  gap: 14px;
  padding: 10px 0;
}

.deck-card {
  position: relative;
  padding: 20px;
  border-radius: 16px;
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(27, 23, 48, 0.12);
}

.deck-card span {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 2px 9px;
  border-radius: 6px;
}

.deck-card h3 {
  margin: 12px 0 6px;
  font-size: 19px;
}

.deck-card p {
  font-size: 13.5px;
  color: var(--muted);
}

.deck-card em {
  position: absolute;
  right: 16px;
  bottom: 16px;
  font-style: normal;
  font-size: 12px;
  color: var(--muted);
}

.deck-origin {
  background: #f3f0e9;
  transform: rotate(-2.4deg);
  margin-right: 34px;
}

.deck-origin span { background: rgba(27, 23, 48, 0.1); }

.deck-arrow {
  position: absolute;
  left: 50%;
  top: 47%;
  transform: translate(-50%, -50%) rotate(90deg);
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--yellow);
  border: 2px solid var(--ink);
  font-size: 19px;
  font-weight: 800;
  z-index: 2;
}

.deck-remix {
  background: var(--accent-soft);
  transform: rotate(1.8deg);
  margin-left: 34px;
}

.deck-remix span { background: var(--accent); color: #fff; }

.deck-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
  padding-left: 4px;
}

.deck-tags li {
  font-size: 12.5px;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--paper);
  border: 1px dashed rgba(27, 23, 48, 0.3);
}

/* ---------- section shared ---------- */
section { padding: 56px 0; }

.section-heading {
  max-width: 660px;
  margin-bottom: 30px;
}

.section-heading .eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.14em;
  font-weight: 800;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 10px;
  border-radius: 6px;
  margin-bottom: 12px;
}

.section-heading h2 { font-size: clamp(24px, 2.9vw, 32px); }

.section-heading p:last-child {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14.5px;
}

.section-heading-split {
  max-width: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
}

.section-heading-split > p {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

/* ---------- features: sticker grid ---------- */
.features {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
}

.sticker-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.sticker-grid article {
  position: relative;
  padding: 24px 20px 22px;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 14px;
  box-shadow: 5px 5px 0 rgba(27, 23, 48, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sticker-grid article:nth-child(odd) { transform: rotate(-0.8deg); }
.sticker-grid article:nth-child(even) { transform: rotate(0.8deg); }

.sticker-grid article:hover {
  transform: rotate(0) translateY(-4px);
  box-shadow: 6px 9px 0 rgba(27, 23, 48, 0.12);
}

.sticker-grid b {
  position: absolute;
  top: -13px;
  left: 18px;
  font-size: 12px;
  font-weight: 800;
  padding: 2px 9px;
  border-radius: 6px;
  background: var(--yellow);
  border: 1.5px solid var(--ink);
}

.sticker-grid h3 {
  margin: 6px 0 8px;
  font-size: 18.5px;
}

.sticker-grid p {
  font-size: 14px;
  color: var(--muted);
}

/* ---------- shots ---------- */
.tilt-shots {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  padding-top: 8px;
}

.tilt-shots figure {
  margin: 0;
  position: relative;
  padding: 10px 10px 0;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 14px;
  box-shadow: 6px 6px 0 rgba(27, 23, 48, 0.1);
  transform: rotate(-1.4deg);
  transition: transform 0.22s ease;
}

.tilt-shots figure:nth-child(even) { transform: rotate(1.4deg); }
.tilt-shots figure:nth-child(3) { transform: rotate(-0.6deg); }
.tilt-shots figure:hover { transform: rotate(0) translateY(-4px); }

.tilt-shots figure::before {
  content: "";
  position: absolute;
  top: -9px;
  left: 50%;
  width: 54px;
  height: 16px;
  transform: translateX(-50%) rotate(-2deg);
  background: rgba(255, 216, 77, 0.72);
  border: 1px solid rgba(27, 23, 48, 0.16);
  border-radius: 3px;
}

.tilt-shots img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top center;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.tilt-shots figcaption {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 2px 12px;
  font-size: 13px;
}

.tilt-shots figcaption b { font-weight: 800; }
.tilt-shots figcaption small { color: var(--muted); font-size: 12px; }

.sample-note {
  margin-top: 18px;
  font-size: 13px;
  color: #a49d8d;
}

/* ---------- faq rows ---------- */
.faq { background: rgba(255, 255, 255, 0.6); }

.faq-rows {
  border-top: 2px solid var(--ink);
}

.faq-rows details {
  border-bottom: 1px dashed rgba(27, 23, 48, 0.22);
  padding: 4px 0;
}

.faq-rows summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
}

.faq-rows summary::-webkit-details-marker { display: none; }

.faq-rows summary h3 {
  font-size: 16.5px;
  font-weight: 700;
}

.faq-rows summary i {
  margin-left: auto;
  width: 26px;
  height: 26px;
  flex: none;
  border-radius: 8px;
  border: 1.5px solid var(--ink);
  position: relative;
  background: var(--paper);
}

.faq-rows summary i::before,
.faq-rows summary i::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--ink);
  border-radius: 2px;
}

.faq-rows summary i::before { width: 11px; height: 2px; }
.faq-rows summary i::after { width: 2px; height: 11px; }

.faq-rows details[open] summary i { background: var(--yellow); }
.faq-rows details[open] summary i::after { opacity: 0; }

.faq-rows details > p {
  padding: 0 44px 16px 2px;
  font-size: 14.5px;
  color: var(--muted);
}

/* ---------- reviews notes ---------- */
.review-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.review-notes .review-card {
  position: relative;
  padding: 22px 22px 18px;
  background: #fffbe8;
  border: 1.5px solid rgba(27, 23, 48, 0.16);
  border-radius: 4px 14px 4px 14px;
  box-shadow: 4px 5px 0 rgba(27, 23, 48, 0.07);
  transform: rotate(-0.5deg);
}

.review-notes .review-card:nth-child(even) { transform: rotate(0.5deg); }
.review-notes .review-card:nth-child(3n) { background: #fdf4f8; }

.review-notes .review-card::before {
  content: "“";
  position: absolute;
  top: 2px;
  right: 14px;
  font-size: 40px;
  line-height: 1;
  color: rgba(226, 62, 140, 0.24);
  font-family: Georgia, serif;
}

.review-card > p { font-size: 14.5px; }

.review-meta {
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--muted);
  border-top: 1px dashed rgba(27, 23, 48, 0.18);
  padding-top: 10px;
}

.review-meta b { color: var(--accent); font-weight: 800; }

/* ---------- steps tape ---------- */
.step-tape {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  counter-reset: tape;
}

.step-tape li {
  counter-increment: tape;
  position: relative;
  padding: 24px 22px 22px;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 14px;
  box-shadow: 5px 5px 0 rgba(42, 157, 143, 0.22);
}

.step-tape li::before {
  content: counter(tape);
  position: absolute;
  top: -16px;
  left: 20px;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--teal);
  color: #fff;
  border: 2px solid var(--ink);
  font-size: 15px;
  font-weight: 800;
}

.step-tape b {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.step-tape h3 {
  margin: 8px 0 8px;
  font-size: 18px;
}

.step-tape p {
  font-size: 14px;
  color: var(--muted);
}

/* ---------- download ---------- */
.download { padding-bottom: 72px; }

.download-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: center;
  padding: 36px 38px;
  border-radius: 20px;
  background: var(--yellow);
  border: 2px solid var(--ink);
  box-shadow: 8px 8px 0 rgba(27, 23, 48, 0.16);
}

.download-copy .eyebrow {
  font-size: 12px;
  letter-spacing: 0.14em;
  font-weight: 800;
  color: rgba(27, 23, 48, 0.6);
  margin-bottom: 8px;
}

.download-copy h2 { font-size: clamp(23px, 2.9vw, 30px); }

.download-copy > p:last-child {
  margin-top: 10px;
  font-size: 14.5px;
  color: rgba(27, 23, 48, 0.66);
  max-width: 460px;
}

.download-act {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.button-large {
  padding: 15px 28px;
  font-size: 16px;
  border-radius: 14px;
}

.download-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-size: 12.5px;
  color: rgba(27, 23, 48, 0.62);
}

.download-notes li::before {
  content: "✓";
  margin-right: 5px;
  color: var(--teal);
  font-weight: 800;
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 2px solid var(--ink);
  padding: 32px 0 44px;
  background: rgba(255, 255, 255, 0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px 40px;
  align-items: start;
}

.footer-brand strong { font-size: 17px; }

.footer-brand p {
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 13.5px;
  color: var(--muted);
  justify-content: flex-end;
}

.footer-nav a:hover { color: var(--ink); }

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 12.5px;
  color: #a49d8d;
}

.footer-meta a:hover { color: var(--muted); }

.disclaimer {
  grid-column: 1 / -1;
  font-size: 12.5px;
  line-height: 1.8;
  color: #a49d8d;
  border-top: 1px dashed rgba(27, 23, 48, 0.18);
  padding-top: 14px;
}

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .hero-grid { gap: 32px; }
  .sticker-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tilt-shots { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step-tape { gap: 16px; }
}

@media (max-width: 900px) {
  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin: 0;
    padding: 0 24px;
    background: var(--bg);
    border-bottom: 2px solid var(--ink);
    display: none;
  }

  .primary-nav.is-open { display: block; }

  .primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 14px;
  }

  .primary-nav li { border-bottom: 1px dashed var(--line); }
  .primary-nav li:last-child { border-bottom: 0; }
  .primary-nav a { display: block; padding: 12px 2px; }
  .primary-nav a::after { display: none; }

  .menu-toggle { display: grid; }
  .nav-actions { margin-left: auto; }

  .hero { padding: 44px 0 40px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .remix-deck { max-width: 480px; }

  .section-heading-split {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .section-heading-split > p { white-space: normal; }

  .download-panel {
    grid-template-columns: minmax(0, 1fr);
    padding: 28px 26px;
  }

  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { justify-content: flex-start; }
}

@media (max-width: 760px) {
  .nav-shell { padding: 10px 18px; gap: 12px; }
  .page-shell { padding: 0 18px; }
  .nav-download span { display: none; }
  .nav-download { padding: 10px 13px; box-shadow: 3px 3px 0 var(--yellow); }
  .brand span { font-size: 14.5px; }

  .review-notes { grid-template-columns: minmax(0, 1fr); }
  .step-tape { grid-template-columns: minmax(0, 1fr); }
  .faq-rows details > p { padding-right: 8px; }

  section { padding: 42px 0; }
  .hero h1 { font-size: 34px; }
}

@media (max-width: 520px) {
  .hero { padding: 34px 0 30px; }
  .hero-tags { gap: 8px; font-size: 12.5px; }
  .deck-card { padding: 16px; }
  .deck-origin { margin-right: 18px; }
  .deck-remix { margin-left: 18px; }
  .deck-card h3 { font-size: 17px; }
  .tilt-shots { gap: 12px; }
  .sticker-grid { gap: 14px; }
  .sticker-grid article { padding: 20px 16px 18px; }
  .download-panel { padding: 22px 18px; box-shadow: 5px 5px 0 rgba(27, 23, 48, 0.16); }
  .button-large { padding: 13px 20px; font-size: 15px; }
  .review-notes .review-card { padding: 18px 16px 14px; }
}