:root {
  --navy: #101C33;
  --navy-2: #16233C;
  --navy-3: #0B1526;
  --gold: #E8C063;
  --gold-soft: rgba(232, 192, 99, 0.14);
  --white: #F7F9FC;
  --white-dim: #C3CEDF;
  --line: rgba(247, 249, 252, 0.12);
  --shell: 1140px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    linear-gradient(180deg, #0B1526 0, #101C33 380px, #101C33 100%);
  color: var(--white);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -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: 1.28; 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(11, 21, 38, 0.94);
  border-bottom: 1px solid var(--line);
  box-shadow: inset 0 -1px 0 rgba(232, 192, 99, 0.24);
  backdrop-filter: blur(10px);
}

.nav-shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand::before {
  content: "";
  width: 4px;
  height: 22px;
  border-radius: 2px;
  background: var(--gold);
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid rgba(232, 192, 99, 0.34);
}

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

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14.5px;
  color: var(--white-dim);
}

.primary-nav a {
  display: inline-block;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.primary-nav a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

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

.nav-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 6px;
  background: var(--gold);
  color: #1B1408;
  font-size: 14.5px;
  font-weight: 800;
  transition: filter 0.18s ease;
}

.nav-download svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-download:hover { filter: brightness(1.06); }

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--navy-2);
  cursor: pointer;
}

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

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

.hero::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 100vw;
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, rgba(232, 192, 99, 0.4), transparent);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: 44px;
  align-items: center;
}

.hero-kicker {
  display: inline-block;
  padding: 4px 10px 4px 12px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--gold);
  background: var(--gold-soft);
  border-left: 3px solid var(--gold);
}

.hero h1 {
  margin: 16px 0 12px;
  font-size: clamp(33px, 4.6vw, 54px);
  letter-spacing: 0.005em;
  line-height: 1.15;
}

.hero h1::after {
  content: "";
  display: block;
  width: 74px;
  height: 4px;
  margin-top: 14px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(232, 192, 99, 0.1));
}

.hero-subtitle {
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.hero-lead {
  margin-top: 16px;
  max-width: 480px;
  font-size: 15.5px;
  color: var(--white-dim);
}

.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: 6px;
  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: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.button-primary {
  background: var(--gold);
  color: #1B1408;
  box-shadow: 0 12px 26px rgba(232, 192, 99, 0.2);
}

.button-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(232, 192, 99, 0.28);
}

.button-large { padding: 15px 30px; font-size: 16.5px; }

.text-link {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--white-dim);
  border-bottom: 1px dotted rgba(247, 249, 252, 0.34);
  padding-bottom: 2px;
}

.text-link:hover { color: var(--gold); border-bottom-color: var(--gold); }

.hero-tags {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12.5px;
  color: var(--white-dim);
}

.hero-tags li {
  padding: 3px 11px;
  border-radius: 4px;
  background: rgba(247, 249, 252, 0.05);
  border: 1px solid var(--line);
}

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

/* ---------- hero episode list ---------- */
.episode-board {
  position: relative;
  padding: 20px 20px 16px;
  border-radius: 4px;
  background: linear-gradient(160deg, #1A2A46, #131F35 66%);
  border: 1px solid rgba(232, 192, 99, 0.22);
  box-shadow: 0 24px 54px rgba(0, 0, 0, 0.46);
}

.episode-board::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--gold) 0 16px, transparent 16px 26px);
}

.episode-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 6px 0 12px;
}

.episode-head p {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.episode-head span {
  font-size: 11.5px;
  color: var(--gold);
}

.episode-list { border-top: 1px solid var(--line); }

.episode-list li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--line);
}

.episode-list li > b {
  font-family: "Consolas", "Menlo", monospace;
  font-size: 15px;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.ep-body {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
}

.ep-body strong {
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ep-body small {
  font-size: 11px;
  color: var(--white-dim);
}

.episode-list em {
  font-style: normal;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.ep-ok {
  color: #0F1B2E;
  background: var(--gold);
}

.ep-ro {
  color: var(--white-dim);
  background: rgba(247, 249, 252, 0.09);
  border: 1px solid var(--line);
}

.episode-foot {
  padding-top: 12px;
  font-size: 11.5px;
  color: var(--white-dim);
  letter-spacing: 0.04em;
}

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

.section-heading {
  max-width: 660px;
  margin-bottom: 28px;
}

.section-heading .eyebrow {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--gold);
  margin-bottom: 8px;
}

.section-heading h2 {
  font-size: clamp(23px, 2.8vw, 32px);
  letter-spacing: 0.01em;
}

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

.section-heading-split {
  max-width: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.section-heading-split > p {
  margin: 0 0 6px;
  font-size: 13.5px;
  color: var(--white-dim);
  white-space: nowrap;
}

/* ---------- features (light band) ---------- */
.features {
  background: var(--white);
  color: var(--navy);
  border-top: 1px solid rgba(16, 28, 51, 0.08);
  border-bottom: 6px solid var(--gold);
}

.features .section-heading .eyebrow { color: #9A7420; }
.features .section-heading p:last-child { color: #4C5B73; }

.episode-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.episode-grid article {
  position: relative;
  padding: 20px 18px 20px 20px;
  background: #FFFFFF;
  border: 1px solid rgba(16, 28, 51, 0.1);
  border-left: 4px solid var(--gold);
  border-radius: 2px;
  box-shadow: 0 10px 24px rgba(16, 28, 51, 0.07);
}

.episode-grid article span {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: #8A6616;
  background: rgba(232, 192, 99, 0.24);
  padding: 1px 8px;
  margin-bottom: 10px;
}

.episode-grid h3 {
  font-size: 17px;
  margin-bottom: 7px;
}

.episode-grid p {
  font-size: 13.6px;
  color: #4C5B73;
  line-height: 1.75;
}

/* ---------- shots ---------- */
.episode-shots {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.episode-shots figure {
  position: relative;
  margin: 0;
  padding: 8px 8px 0;
  background: var(--navy-2);
  border: 1px solid rgba(232, 192, 99, 0.2);
  border-radius: 3px;
}

.episode-shots img {
  width: 100%;
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: top center;
  background: #0D1829;
}

.episode-shots figcaption {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 10px 2px 11px;
  font-size: 13px;
  font-weight: 700;
}

.episode-shots figcaption b {
  font-family: "Consolas", "Menlo", monospace;
  font-size: 11px;
  color: var(--gold);
}

.episode-shots figcaption small {
  margin-left: auto;
  font-weight: 400;
  font-size: 11px;
  color: var(--white-dim);
}

.sample-note {
  margin-top: 16px;
  font-size: 12.5px;
  color: var(--white-dim);
}

/* ---------- faq ---------- */
.faq {
  background: #0C1729;
  border-top: 1px solid var(--line);
}

.faq-rows {
  display: grid;
  gap: 9px;
  max-width: 900px;
}

.faq-rows details {
  padding: 0 18px;
  border-radius: 2px;
  background: var(--navy-2);
  border: 1px solid var(--line);
  border-left: 3px solid rgba(232, 192, 99, 0.28);
}

.faq-rows details[open] {
  border-left-color: var(--gold);
  background: #182742;
}

.faq-rows summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
}

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

.faq-rows summary h3 {
  flex: 1;
  font-size: 15.5px;
}

.faq-rows summary i {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(232, 192, 99, 0.5);
  border-radius: 50%;
}

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

.faq-rows summary i::before { width: 8px; height: 2px; }
.faq-rows summary i::after { width: 2px; height: 8px; transition: opacity 0.2s ease; }
.faq-rows details[open] summary i::after { opacity: 0; }

.faq-rows details > p {
  padding: 12px 0 15px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  color: var(--white-dim);
}

/* ---------- reviews ---------- */
.reviews { border-top: 1px solid var(--line); }

.note-wall {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.review-card {
  position: relative;
  padding: 26px 18px 16px;
  background: rgba(22, 35, 60, 0.7);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.review-card::before {
  content: "“";
  position: absolute;
  top: 4px;
  left: 14px;
  font-size: 30px;
  line-height: 1;
  color: rgba(232, 192, 99, 0.5);
  font-family: Georgia, serif;
}

.review-card > p {
  font-size: 13.8px;
  color: #DDE5F1;
}

.review-meta {
  margin-top: 12px;
  padding-top: 10px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px dashed var(--line);
  font-size: 11px;
  color: var(--white-dim);
}

.review-meta b {
  font-size: 12px;
  color: var(--gold);
}

/* ---------- steps (light band) ---------- */
.steps {
  background: #EDF1F7;
  color: var(--navy);
}

.steps .section-heading .eyebrow { color: #9A7420; }
.steps .section-heading p:last-child { color: #4C5B73; }

.pick-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  counter-reset: step;
}

.pick-row li {
  position: relative;
  padding: 22px 20px 24px;
  background: #FFFFFF;
  border-top: 3px solid var(--navy);
  border-radius: 2px;
  box-shadow: 0 10px 22px rgba(16, 28, 51, 0.06);
}

.pick-row span {
  display: block;
  font-family: "Consolas", "Menlo", monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #9A7420;
  margin-bottom: 6px;
}

.pick-row h3 { font-size: 18px; margin-bottom: 6px; }

.pick-row p {
  font-size: 13.6px;
  color: #4C5B73;
  line-height: 1.75;
}

/* ---------- download ---------- */
.download { padding-bottom: 66px; }

.download-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  padding: 34px;
  border-radius: 4px;
  background:
    repeating-linear-gradient(135deg, rgba(16, 28, 51, 0.06) 0 10px, transparent 10px 20px),
    linear-gradient(102deg, #EDC96F, #E8C063 58%, #D9AE4C);
  color: #1B1408;
  box-shadow: 0 22px 44px rgba(232, 192, 99, 0.16);
}

.download-copy { max-width: 520px; }

.download-copy .eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: #5C4510;
  margin-bottom: 8px;
}

.download-copy h2 {
  font-size: clamp(23px, 2.7vw, 31px);
  margin-bottom: 8px;
}

.download-copy p { font-size: 14.5px; color: #3C2E0C; }

.download-act {
  flex: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.download-act .button-primary {
  background: #101C33;
  color: var(--white);
  box-shadow: 0 12px 24px rgba(16, 28, 51, 0.28);
}

.download-act .button-primary:hover { box-shadow: 0 16px 30px rgba(16, 28, 51, 0.34); }

.download-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-size: 12px;
  color: #4A390F;
}

.download-notes li::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  margin-right: 6px;
  border-radius: 50%;
  background: #101C33;
  vertical-align: 2px;
}

/* ---------- footer ---------- */
.site-footer {
  background: #09111F;
  border-top: 1px solid var(--line);
  padding: 36px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr) minmax(0, 0.85fr);
  gap: 22px 30px;
  align-items: start;
}

.footer-brand strong {
  display: block;
  font-size: 17px;
  color: var(--gold);
}

.footer-brand p {
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--white-dim);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 13px;
  color: var(--white-dim);
}

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

.footer-meta {
  font-size: 12.5px;
  color: var(--white-dim);
  text-align: right;
}

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

.disclaimer {
  grid-column: 1 / -1;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.72;
  color: #8C9AB0;
}

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .episode-board { max-width: 560px; }
  .episode-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .episode-shots { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .note-wall { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-meta { text-align: left; }
  .download-panel { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 900px) {
  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin-left: 0;
    display: none;
    padding: 10px 24px 16px;
    background: var(--navy-2);
    border-bottom: 1px solid var(--line);
  }

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

  .primary-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    font-size: 15px;
  }

  .primary-nav li { width: 100%; }

  .primary-nav a {
    display: block;
    padding: 11px 0;
    border-bottom: 1px solid var(--line);
    border-left: none;
  }

  .nav-shell { position: relative; flex-wrap: wrap; }
  .primary-nav { order: 4; flex-basis: 100%; }
  .nav-actions { margin-left: auto; }
  .menu-toggle { display: block; }
  .nav-download span { display: none; }
  .nav-download { padding: 10px 12px; }
}

@media (max-width: 640px) {
  .page-shell, .nav-shell { padding-left: 18px; padding-right: 18px; }
  section { padding: 44px 0; }
  .hero { padding: 42px 0 36px; }
  .episode-grid { grid-template-columns: minmax(0, 1fr); }
  .note-wall { grid-template-columns: minmax(0, 1fr); }
  .pick-row { grid-template-columns: minmax(0, 1fr); }
  .section-heading-split { flex-direction: column; align-items: flex-start; gap: 6px; }
  .section-heading-split > p { white-space: normal; }
  .download-panel { padding: 26px 20px; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .download-act { width: 100%; }
  .download-act .button { width: 100%; justify-content: center; }
}

@media (max-width: 400px) {
  .episode-shots { grid-template-columns: minmax(0, 1fr); }
  .brand span { font-size: 15px; }
  .brand::before { display: none; }
  .episode-list li { grid-template-columns: 26px minmax(0, 1fr) auto; gap: 8px; }
  .ep-body strong { font-size: 13.5px; }
  .download-panel { padding: 22px 16px; }
}