/* ============================================================
   DreamPhones Focus — redesigned landing page styles
   Source of truth: Figma "DreamPhones独立站设计稿" / Focus-PC (1920)
   Desktop content column: 1440px. Mobile reference: Focus-M (393)
   ============================================================ */

:root {
  --brand-cyan: #00D8F0;
  --announce-black: #040000;
  --teal-strike: #00404A;
  --accessible-cyan: #007A8A;
  --bullet-grey: #8B8B8B;
  --label-grey: #AAAAAA;
  --navy: #001125;
  --card-grey: #F5F5FA;
  --card-border: rgba(0, 0, 0, 0.1);
  --section-gradient: linear-gradient(134.2deg, #FBFBFF 13.62%, #C7CCD2 80.48%);
  --panel-gradient: linear-gradient(to bottom, rgba(239, 241, 245, 0.5), rgba(209, 211, 215, 0.5));
  --panel-border: rgba(184, 184, 184, 0.5);
  --check-gradient: linear-gradient(to bottom, #02CC00, #029000);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Noto Serif SC', 'Songti SC', Georgia, serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.3;
  color: #000;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

button { font-family: inherit; cursor: pointer; }

.container {
  max-width: 1440px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

@media (min-width: 1488px) {
  .container { padding-left: 0; padding-right: 0; }
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 8px;
  background: #000;
  color: #fff;
  padding: 8px 16px;
  z-index: 200;
  border-radius: 4px;
}
.skip-link:focus { top: 8px; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  line-height: 1.5;
  white-space: nowrap;
  transition: filter 0.15s ease, background 0.15s ease, transform 0.15s ease;
}
.btn:hover { filter: brightness(1.06); }
.btn:active { transform: scale(0.985); }

.btn-cyan {
  background: var(--brand-cyan);
  color: #000;
  font-weight: 500;
  padding: 14px 40px;
  min-height: 53px;
}

.btn-outline {
  background: transparent;
  border: 1px solid #000;
  color: #000;
  font-weight: 400;
  padding: 14px 30px;
  min-height: 53px;
}
.btn-outline:hover { background: rgba(0, 0, 0, 0.04); }

.btn-black {
  background: #000;
  color: #fff;
  font-weight: 500;
  padding: 13px 40px;
  min-height: 52px;
}

.btn-navy {
  background: var(--navy);
  color: #fff;
  font-weight: 500;
  padding: 13px 40px;
  min-height: 52px;
}

/* ---------- Green checklist ---------- */

.check-list li {
  position: relative;
  padding-left: 22px;
}
.check-list .check-icon {
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 14px;
  flex: none;
}
.check-list li .check-icon { top: calc(0.5em * var(--check-lh, 2)); transform: translateY(-50%); }

.check-icon {
  display: inline-block;
  width: 14px;
  height: 14px;
}

/* ---------- Announcement bar ---------- */

.announce, .uni-announce {
  height: 35px;
  background: var(--announce-black);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 120px;
  font-size: 13px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
}
.announce svg { flex: none; }

body:has(.announce), body:has(.uni-announce) { padding-top: 35px; }

html:has(.announce), html:has(.uni-announce) { scroll-padding-top: 116px; }
@media (max-width: 900px) { html:has(.announce), html:has(.uni-announce) { scroll-padding-top: 92px; } }

@media (max-width: 767px) {
  .announce, .uni-announce { gap: 24px; font-size: 11px; padding: 0 12px; text-align: center; }
}

/* ---------- Navigation ---------- */

.site-header {
  position: fixed;
  top: 35px;
  left: 0;
  right: 0;
  z-index: 50;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0));
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom-color: rgba(0, 0, 0, 0.06);
}

.nav-bar {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo { display: flex; align-items: center; }
.nav-logo img { width: 259px; height: 23px; }
.nav-logo img.nav-logo-light { display: none; }

.nav-products {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-right: auto;
  margin-left: 40px;
}
.nav-products-label {
  font-size: 16px;
  color: #000;
}
.nav-products-divider {
  width: 1px;
  height: 17px;
  background: #000;
}
.nav-pill {
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 24px;
  border-radius: 2px;
  font-size: 16px;
  background: transparent;
  border: 1px solid #000;
  color: #000;
}
.nav-pill:hover { background: rgba(0, 0, 0, 0.05); }
.nav-pill.active {
  background: var(--brand-cyan);
  border: none;
  font-weight: 700;
}

.nav-links {
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 16px;
}
.nav-links a:hover { opacity: 0.65; }

.nav-shop {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 28px;
  border: 1px solid #000;
  border-radius: 999px;
  font-size: 16px;
}
.nav-links a.nav-shop:hover { opacity: 1; background: rgba(0, 0, 0, 0.05); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 10px;
  width: 24px;
  height: 2px;
  background: #000;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle span { top: 21px; }
.nav-toggle span::before { left: 0; top: -7px; }
.nav-toggle span::after { left: 0; top: 7px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-7px) rotate(-45deg); }

/* Full-screen mobile drawer (below the announcement bar) */
.uni-drawer {
  display: flex;
  position: fixed;
  top: 35px;
  left: 0;
  right: 0;
  bottom: 0;
  background: #000;
  color: #fff;
  z-index: 70;
  flex-direction: column;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.uni-drawer.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.uni-drawer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  flex: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}
.uni-drawer-logo img { width: 190px; height: auto; }
.uni-drawer-close {
  background: none;
  border: none;
  padding: 10px;
  display: flex;
}
.uni-drawer-menu {
  display: flex;
  flex-direction: column;
  margin-top: 8px;
  flex: none;
}
.uni-drawer-link, .uni-drawer-sublink, .uni-drawer-products-btn {
  font-family: 'Inter', -apple-system, sans-serif;
}
.uni-drawer-link {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 76px;
  padding: 0 32px;
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 24px;
  color: #fff;
  text-align: left;
  background: none;
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  width: 100%;
  flex: none;
}
.uni-drawer-chevron { transition: transform 0.2s ease; }
.uni-drawer-products-btn[aria-expanded="true"] .uni-drawer-chevron { transform: rotate(180deg); }
.uni-drawer-sub { display: flex; flex-direction: column; }
.uni-drawer-sub[hidden] { display: none; }
.uni-drawer-sublink {
  display: flex;
  align-items: center;
  height: 76px;
  padding: 0 32px 0 64px;
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 24px;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  flex: none;
}
.uni-drawer-ctas {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 40px 24px 48px;
}
.uni-drawer-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 227px;
  height: 50px;
  border-radius: 4px;
  background: var(--brand-cyan);
  color: #000;
  font-size: 16px;
  font-weight: 700;
  flex: none;
}

@media (min-width: 1201px) {
  .uni-drawer { display: none; }
}

@media (max-width: 1200px) {
  .nav-products, .nav-links { display: none; }
  .nav-toggle { display: block; }
  .site-header,
  .site-header.scrolled {
    background: #000;
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    border-bottom-color: transparent;
  }
  .nav-bar { height: 64px; }
  .nav-logo img { width: 190px; height: auto; }
  .nav-logo img.nav-logo-dark { display: none; }
  .nav-logo img.nav-logo-light { display: block; }
  .nav-toggle span,
  .nav-toggle span::before,
  .nav-toggle span::after { background: #fff; }
  .nav-toggle[aria-expanded="true"] span { background: transparent; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 950px;
  overflow: hidden;
  background: radial-gradient(115% 100% at 72% 50%, #D2E7FF 0%, #FFFFFF 100%);
}
.hero-bg, .hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}
.hero-overlay { object-position: right bottom; }

.hero-inner {
  position: relative;
  z-index: 2;
  padding-top: 260px;
}

.hero-copy {
  max-width: 820px;
  padding-left: 80px;
}

.hero h1 {
  font-size: 64px;
  font-weight: 800;
  line-height: 1.1;
  color: #000;
}

.hero-sub {
  max-width: 495px;
  margin-top: 10px;
  font-size: 16px;
  line-height: 1.3;
}

.hero-checks {
  margin-top: 20px;
}
.hero-checks li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
  padding: 2.5px 0;
}

.hero-cta-row {
  display: flex;
  gap: 20px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.btn-price {
  background: var(--brand-cyan);
  color: #000;
  padding: 14px 30px;
  min-height: 53px;
  gap: 0;
}
.btn-price .price-now { font-size: 18px; font-weight: 700; }
.btn-price .price-was {
  font-size: 14px;
  font-weight: 400;
  color: var(--teal-strike);
  text-decoration: line-through;
  text-decoration-color: var(--teal-strike);
  margin-left: 8px;
}
.btn-price .price-label { font-size: 16px; font-weight: 600; margin-left: 12px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  margin-top: 40px;
  height: 36px;
  padding: 0 20px;
  border: 1px solid #000;
  border-radius: 99px;
  font-size: 14px;
  font-weight: 700;
}

.hero-footnote {
  margin-top: 10px;
  font-size: 12px;
  font-style: italic;
  color: rgba(0, 0, 0, 0.4);
}

.hero-product {
  position: absolute;
  z-index: 1;
  top: 124px;
  right: max(118px, calc(50% - 907px));
  width: 664px;
  height: auto;
}

@media (max-width: 1280px) {
  .hero-product { width: 480px; top: 220px; right: 4%; opacity: 0.95; }
  .hero-copy { padding-left: 24px; }
  .hero-inner { padding-top: 180px; }
}

@media (max-width: 767px) {
  .hero { min-height: 0; padding: 84px 0 0; display: flex; flex-direction: column; }
  /* Flatten the wrappers so hero children can be reordered to match Focus-M:
     headline > sub > earcup image > price button > HRV pill > footnote */
  .hero-inner, .hero-copy { display: contents; }
  .hero h1, .hero-sub, .hero-cta-row, .hero-badge, .hero-footnote {
    position: relative;
    z-index: 2;
  }
  .hero h1 { order: 1; margin: 20px 20px 0; font-size: 28px; line-height: 1.3; }
  .hero-sub { order: 2; margin: 20px 20px 0; font-size: 14px; line-height: 1.4; max-width: none; }
  .hero-checks { display: none; }
  .hero-cta-row .btn-outline { display: none; }
  .hero-cta-row { order: 4; margin: 16px 20px 0; gap: 12px; justify-content: center; }
  .btn-price { min-height: 47px; padding: 12px 24px; }
  .hero-badge {
    order: 5;
    align-self: center;
    margin: 12px 20px 0;
    height: 34px;
    font-size: 13px;
  }
  .hero-footnote { order: 6; margin: 8px 20px 28px; font-size: 12px; text-align: center; }
  .hero-product {
    position: relative;
    top: auto;
    right: auto;
    z-index: 1;
    order: 3;
    width: 293px;
    max-width: 80%;
    margin: 18px auto 0;
  }
}

/* Tablet/small-laptop (768-1365px): stack copy then image so the absolute
   product art no longer overlaps the copy and secondary CTA. The 2-column
   desktop hero (with room for the right-anchored product) resumes at 1366px. */
@media (min-width: 768px) and (max-width: 1365px) {
  .hero {
    display: flex;
    flex-direction: column;
    min-height: 0;
    padding: 130px 0 72px;
  }
  .hero-inner { order: 1; padding-top: 0; }
  .hero-copy { padding: 0 40px; max-width: 760px; margin: 0 auto; }
  .hero h1 { font-size: 48px; line-height: 1.1; }
  .hero-sub { max-width: 620px; margin-top: 16px; }
  .hero-checks { margin-top: 22px; }
  .hero-cta-row { margin-top: 30px; }
  .hero-badge { margin-top: 22px; }
  .hero-footnote { margin-top: 10px; }
  .hero-product {
    order: 2;
    position: relative;
    top: auto;
    right: auto;
    opacity: 1;
    width: 380px;
    max-width: 70%;
    margin: 40px auto 0;
  }
}

/* ---------- Section: Focus doesn't fail ---------- */

.section-lazy {
  padding: 180px 0 120px;
  background: #fff;
}
.section-lazy .container {
  display: flex;
  align-items: center;
  gap: 80px;
}
.lazy-copy { max-width: 555px; margin-left: 120px; }

.h-serif-40 {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.42;
  color: #000;
}
.h-serif-40.black { font-weight: 900; }

.lazy-copy p {
  margin-top: 30px;
  font-size: 14px;
  line-height: 1.3;
}

ul.lazy-bullets {
  margin-top: 40px;
  list-style: disc;
  padding-left: 21px;
  color: #595959;
  font-size: 14px;
  line-height: 1.5;
}

.lazy-copy .btn-black { margin-top: 24px; }

.lazy-visual {
  flex: none;
  width: 650px;
  height: 650px;
  background: linear-gradient(116.86deg, #FBFBFF 13.622%, #C7CCD2 80.483%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.lazy-visual img {
  width: 481px;
  height: auto;
  transform: scaleX(-1);
}

@media (max-width: 1280px) {
  .lazy-copy { margin-left: 0; }
  .lazy-visual { width: 480px; height: 480px; }
  .lazy-visual img { width: 360px; }
}

@media (max-width: 900px) {
  .section-lazy { padding: 80px 0 60px; }
  .section-lazy .container { flex-direction: column-reverse; gap: 20px; }
  .h-serif-40 { font-size: 36px; line-height: 1.2; }
  /* Full-bleed gradient square with the cream headphones, as in Focus-M */
  .lazy-visual {
    width: calc(100% + 48px);
    max-width: none;
    margin: 0 -24px;
    height: auto;
    aspect-ratio: 1;
  }
  .lazy-visual img { width: 74%; }
  .lazy-copy p { margin-top: 20px; }
  ul.lazy-bullets {
    margin-top: 12px;
    list-style: none;
    padding-left: 0;
    font-size: 11px;
    line-height: 1.25;
    color: #9A9A9A;
  }
  .lazy-copy .btn-black {
    margin-top: 16px;
    min-height: 38px;
    padding: 8px 24px;
    min-width: 200px;
    font-size: 14px;
  }
}

/* ---------- Section: Built for minds ---------- */

.section-minds {
  padding: 110px 0 0;
  background: #fff;
  text-align: center;
}
.section-minds > .container > p {
  max-width: 752px;
  margin: 20px auto 0;
  font-size: 16px;
  line-height: 1.3;
}

.persona-row {
  display: flex;
  gap: 20px;
  margin-top: 80px;
}

.persona-card {
  position: relative;
  flex: 1;
  aspect-ratio: 467 / 520;
  border-radius: 14px;
  overflow: hidden;
}
.persona-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.persona-card .scrim {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 90px;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.9));
}
.persona-card figcaption {
  position: absolute;
  left: 25px;
  right: 25px;
  bottom: 18px;
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  text-align: center;
}

@media (max-width: 900px) {
  .section-minds { padding-top: 72px; text-align: left; }
  .section-minds > .container > p {
    max-width: none;
    margin: 20px 0 0;
    font-size: 14px;
    line-height: 1.4;
  }
  .persona-row { flex-direction: column; margin-top: 56px; }
  .persona-card { aspect-ratio: 353 / 393; }
}

/* ---------- Standalone disclaimer ---------- */

.adhd-disclaimer {
  max-width: 635px;
  margin: 0 auto;
  padding: 40px 24px 60px;
  font-size: 12px;
  line-height: 1.3;
  color: rgba(0, 0, 0, 0.4);
  text-align: center;
}
@media (max-width: 767px) {
  .adhd-disclaimer { padding: 20px 24px 28px; text-align: left; line-height: 1.5; }
}

/* ---------- Section A: Not headphones ---------- */

.section-gradient { background: var(--section-gradient); }

.section-neuro {
  padding: 120px 0;
}
.section-neuro .container {
  display: flex;
  align-items: center;
  gap: 60px;
}
.neuro-visual {
  flex: 1;
  display: flex;
  justify-content: center;
}
.neuro-visual img { width: 458px; height: auto; }

.neuro-copy { flex: 1; max-width: 600px; }
.neuro-copy .h-serif-40 { max-width: 505px; }
.neuro-copy > p {
  margin-top: 56px;
  max-width: 583px;
  font-size: 14px;
  line-height: 1.3;
}
.neuro-checks {
  margin-top: 56px;
  font-size: 16px;
  line-height: 2;
  color: #595959;
}
.neuro-checks li { display: flex; align-items: center; gap: 8px; }

@media (max-width: 900px) {
  /* Focus-M: gradient block behind the product image only, copy below on white */
  .section-neuro { padding: 0 0 64px; background: #fff; }
  .section-neuro .container { flex-direction: column; gap: 40px; }
  .neuro-visual {
    width: calc(100% + 48px);
    margin: 0 -24px;
    flex: none;
    padding: 60px 0 40px;
    background: var(--section-gradient);
  }
  .neuro-visual img { width: min(80%, 318px); }
  .neuro-copy h2 br { display: none; }
  .neuro-copy > p { margin-top: 20px; line-height: 1.4; }
  .neuro-checks { margin-top: 20px; font-size: 14px; line-height: 1.3; }
  .neuro-checks li { align-items: flex-start; padding: 2px 0; }
  .neuro-checks li .check-icon { margin-top: 2px; }
}

/* ---------- Section B: What makes Focus different ---------- */

.section-different {
  position: relative;
  min-height: 1080px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.section-different .bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.different-copy {
  position: relative;
  z-index: 1;
  margin: 120px 24px 120px 360px;
  max-width: 700px;
  padding: 56px 56px 60px;
  background: linear-gradient(to right, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.72));
  border-radius: 16px;
}
@media (min-width: 901px) {
  .different-copy { max-width: 780px; }
  .different-copy h2 { white-space: nowrap; }
  .different-copy > p { white-space: nowrap; }
}
.different-copy > p {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.3;
}
.different-checks {
  margin-top: 30px;
  font-size: 14px;
  line-height: 2;
  color: #595959;
}
.different-checks li { display: flex; align-items: center; gap: 8px; }

@media (max-width: 1280px) {
  .different-copy { margin-left: 48px; }
}
@media (max-width: 900px) {
  /* Focus-M: photo on top fading into a light text block below (no scrim overlay) */
  .section-different { min-height: 0; display: block; background: #fff; }
  .section-different .bg {
    position: static;
    width: 100%;
    height: 320px;
    object-fit: cover;
    object-position: center 22%;
  }
  .different-copy {
    position: relative;
    margin: 0;
    padding: 36px 24px 32px;
    background: #fff;
    max-width: none;
    border-radius: 0;
  }
  .different-copy > p { margin-top: 20px; line-height: 1.4; }
  .different-checks { margin-top: 20px; line-height: 1.4; }
  .different-checks li { align-items: flex-start; }
  .different-checks li + li { margin-top: 10px; }
  .different-checks li .check-icon { margin-top: 3px; }
}

/* ---------- Section C: How a focus session works ---------- */

.section-steps {
  padding: 120px 0 0;
  text-align: center;
}
.section-steps .sub {
  margin-top: 24px;
  font-size: 16px;
}

.steps-row {
  display: flex;
  gap: 20px;
  margin-top: 56px;
  text-align: left;
}

.step-card {
  flex: 1;
  background: var(--card-grey);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 80px 80px 64px;
}
.step-card .icon { height: 37px; display: flex; align-items: center; }
.step-card .num {
  margin-top: 28px;
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 800;
  line-height: 1;
  color: rgba(0, 216, 240, 0.2);
}
.step-card h3 {
  margin-top: 26px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 800;
  color: #000;
}
.step-card p {
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.5;
  text-align: left;
}

.section-steps .btn-navy { margin: 60px auto 0; }

@media (max-width: 1100px) {
  .step-card { padding: 48px 36px 40px; }
}
@media (max-width: 900px) {
  .section-steps { padding-top: 72px; text-align: left; }
  .section-steps .sub { margin-top: 20px; font-size: 14px; }
  .steps-row { flex-direction: column; margin-top: 40px; }
  .step-card { padding: 46px 20px 40px; }
  .section-steps .btn-navy { display: flex; width: 100%; margin: 20px 0 0; }
}

/* ---------- Section D: Backed by science ---------- */

.section-science-quote {
  margin-top: 120px;
  padding: 150px 0;
}
.section-science-quote .container {
  display: flex;
  gap: 140px;
  align-items: flex-start;
}

.scientist {
  flex: none;
  width: 374px;
  text-align: center;
  padding-top: 76px;
}
.scientist-photo {
  position: relative;
  width: 360px;
  height: 360px;
  margin: 0 auto;
}
.scientist-photo img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}
.scientist-photo::after {
  content: '';
  position: absolute;
  inset: -3px;
  border: 3px solid var(--brand-cyan);
  border-radius: 50%;
}
.scientist h3 {
  margin-top: 40px;
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 800;
}
.scientist .role {
  margin-top: 8px;
  font-size: 20px;
}

.quote-col { flex: 1; max-width: 815px; }
.quote-col .eyebrow {
  font-size: 16px;
  color: #000;
}
.quote-col blockquote {
  margin-top: 14px;
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 400;
  line-height: 1.8;
  color: #000;
}
.quote-divider {
  margin-top: 30px;
  border: none;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.cred-row {
  display: flex;
  gap: 48px;
  margin-top: 20px;
}
.cred-row > div { flex: 1; }
.cred-row .label {
  font-size: 16px;
  color: var(--label-grey);
}
.cred-row .value {
  margin-top: 8px;
  font-size: 16px;
  line-height: 1.5;
}

.book-card {
  display: flex;
  gap: 30px;
  margin-top: 64px;
  padding: 30px 60px;
  border-radius: 8px;
  background: var(--panel-gradient);
  border: 1px solid var(--panel-border);
}
.book-card img {
  width: 129px;
  height: 193px;
  border-radius: 4px;
  object-fit: cover;
  box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.1), 1px 1px 2px rgba(0, 0, 0, 0.1);
}
.book-card .pub { font-size: 16px; line-height: 1.8; color: var(--accessible-cyan); }
.book-card h4 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 400;
  line-height: 1.8;
}
.book-card .subtitle {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.8;
}
.book-card .amazon-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--accessible-cyan);
  text-decoration: underline;
}

@media (max-width: 1280px) {
  .section-science-quote .container { gap: 64px; }
}
@media (max-width: 1000px) {
  .section-science-quote { padding: 80px 0; margin-top: 72px; }
  .section-science-quote .container { flex-direction: column; align-items: center; }
  .scientist { padding-top: 0; }
  .scientist-photo { width: 280px; height: 280px; }
  .book-card { flex-direction: row; padding: 24px; }
}
@media (max-width: 600px) {
  .book-card { flex-direction: column; }
}

/* Focus-M mobile layout for the Desimone section */
@media (max-width: 767px) {
  .section-science-quote .container { gap: 40px; }
  .scientist { width: 100%; }
  .scientist-photo {
    width: min(333px, calc(100vw - 60px));
    height: auto;
    aspect-ratio: 1 / 1;
  }
  .scientist h3 { margin-top: 32px; font-size: 24px; line-height: 1.2; }
  .scientist .role { font-size: 14px; }
  .quote-col { width: 100%; max-width: none; }
  .quote-col .eyebrow { font-size: 12px; }
  .quote-col blockquote { margin-top: 12px; font-size: 16px; line-height: 1.6; }
  .quote-divider { margin-top: 20px; }
  /* Credentials stack as full-width rows between divider lines */
  .cred-row {
    flex-direction: column;
    gap: 24px;
    margin-top: 24px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  }
  .cred-row .label { font-size: 14px; }
  .cred-row .value { margin-top: 12px; font-size: 16px; line-height: 1.4; }
  .book-card {
    flex-direction: row;
    gap: 20px;
    margin-top: 24px;
    padding: 0;
    background: none;
    border: none;
  }
  .book-card img { flex: none; }
  .book-card .pub { font-size: 12px; }
  .book-card h4 { font-size: 18px; line-height: 1.5; }
  .book-card .subtitle { font-size: 14px; line-height: 1.5; }
  .book-card .amazon-link { font-size: 14px; }
}

/* ---------- Section E: The science / ear anatomy ---------- */

.section-science {
  padding: 178px 0 120px;
}
.section-science .intro { text-align: center; }
.section-science .intro p {
  max-width: 656px;
  margin: 36px auto 0;
  font-size: 14px;
  line-height: 1.5;
}

.science-cols {
  display: flex;
  gap: 60px;
  margin-top: 172px;
  align-items: flex-start;
}

.science-panel {
  flex: none;
  width: 601px;
  height: 393px;
  border-radius: 8px;
  background: var(--panel-gradient);
  border: 1px solid var(--panel-border);
  overflow: hidden;
}
.science-panel img {
  width: 565px;
  max-width: none;
  height: 100%;
  object-fit: cover;
  object-position: left center;
}

.science-copy { flex: 1; max-width: 672px; }
.science-copy .eyebrow { font-size: 20px; }
.science-copy h3 {
  margin-top: 12px;
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.5;
}
.science-copy > p {
  margin-top: 24px;
  font-size: 14px;
  line-height: 1.5;
  max-width: 670px;
}
.science-checks {
  margin-top: 28px;
  font-size: 16px;
  line-height: 2;
  color: #000;
}
.science-checks li { display: flex; align-items: center; gap: 8px; }
.science-copy .footnote {
  margin-top: 16px;
  font-size: 12px;
  line-height: 1.4;
  color: rgba(0, 0, 0, 0.3);
}

@media (max-width: 1280px) {
  .science-panel { width: 480px; height: 314px; }
  .science-panel img { width: 451px; }
}
@media (max-width: 1000px) {
  .section-science { padding: 80px 0; }
  .science-cols { flex-direction: column; margin-top: 64px; align-items: center; }
  .science-panel { width: 100%; max-width: 601px; height: auto; aspect-ratio: 601/393; }
  .science-panel img { width: 94%; }
}

/* Focus-M mobile layout for the science / ear-anatomy section */
@media (max-width: 767px) {
  .section-science .intro { text-align: left; }
  .section-science .intro p { max-width: none; margin: 20px 0 0; font-size: 14px; line-height: 1.4; }
  .science-cols { margin-top: 24px; gap: 24px; }
  .science-panel { aspect-ratio: 353 / 231; }
  .science-copy { width: 100%; }
  .science-copy .eyebrow { font-size: 14px; }
  .science-copy h3 { margin-top: 32px; font-size: 32px; line-height: 1.2; }
  .science-copy > p { margin-top: 20px; line-height: 1.4; }
  .science-checks { margin-top: 20px; font-size: 14px; line-height: 1.3; }
  .science-checks li { padding: 2px 0; align-items: flex-start; }
  .science-checks li .check-icon { margin-top: 2px; }
  .science-copy .footnote { margin-top: 20px; font-size: 12px; }
}

/* ---------- Section: Comparison table ---------- */

.section-table {
  padding: 120px 0 0;
  background: #fff;
  text-align: center;
}
.section-table .sub {
  max-width: 748px;
  margin: 18px auto 0;
  font-size: 16px;
  line-height: 1.3;
}

.compare-table {
  display: flex;
  gap: 15px;
  margin-top: 82px;
  text-align: left;
}
.compare-col {
  flex: 1;
  border-radius: 20px;
  display: flex;
  flex-direction: column;
}
.compare-col.feature {
  flex: 1.37;
  background: #E5FDFF;
}
.compare-col.dreamphones { background: rgba(0, 241, 255, 0.6); }
.compare-col.grey { background: rgba(242, 243, 245, 0.6); }

.compare-col > div {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 16px;
  line-height: 1.25;
  padding: 0 12px;
  text-align: center;
  color: #040000;
  border-bottom: 1px solid #EEEEEE;
}
.compare-col.feature > div,
.compare-col.dreamphones > div { border-bottom-color: rgba(172, 172, 172, 0.2); }
.compare-col > div:last-child { border-bottom: none; }
.compare-col > div.head {
  height: 94px;
  font-weight: 700;
}
.compare-col.feature > div {
  justify-content: flex-start;
  padding-left: 50px;
  text-align: left;
  font-weight: 500;
}
.compare-col.dreamphones .yes { color: #029E00; }
.compare-col svg, .compare-col img.cell-icon { flex: none; }

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

@media (max-width: 1100px) {
  .section-table { padding-top: 72px; }
  .compare-table { min-width: 900px; margin-top: 48px; }
  .table-scroll { margin: 0 -24px; padding: 0 24px; }
  .compare-col.feature > div { padding-left: 20px; }
}
@media (max-width: 767px) {
  .section-table { text-align: left; }
  .section-table .sub { margin: 16px 0 0; max-width: none; font-size: 14px; }
}

/* ---------- Section: Reviews ---------- */

.section-reviews {
  padding: 180px 0 0;
  text-align: center;
}
.section-reviews .sub {
  max-width: 578px;
  margin: 18px auto 0;
  font-size: 16px;
  line-height: 1.3;
}

.reviews-grid {
  display: flex;
  gap: 30px;
  margin-top: 84px;
  text-align: left;
}
.reviews-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.review-card {
  border: 1px solid #EEEEEE;
  border-radius: 4px;
  padding: 20px;
  background: #fff;
}
.review-head {
  display: flex;
  align-items: center;
  gap: 8px;
}
.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  flex: none;
}
.review-avatar.initials {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #000;
}
.review-name { font-size: 14px; font-weight: 700; }

.review-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 10px;
}
.review-stars { display: flex; gap: 0; color: #FF6202; flex: none; }
.review-stars svg { width: 20px; height: 20px; }
.review-title { font-size: 16px; font-weight: 700; flex: 1; }
.review-date { font-size: 14px; font-weight: 700; white-space: nowrap; }

.review-body {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.25;
}
.review-verified {
  margin-top: 20px;
  font-size: 14px;
  color: #C94E00;
}
.review-photo {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 2px;
  margin-top: 27px;
}

@media (max-width: 900px) {
  .section-reviews { padding-top: 90px; text-align: left; }
  .section-reviews .sub { margin: 16px 0 0; max-width: none; font-size: 14px; }
  .reviews-grid { flex-direction: column; gap: 20px; margin-top: 32px; }
  .review-meta { flex-wrap: wrap; gap: 8px 12px; }
  .review-title { flex-basis: 100%; order: 3; }
}

/* ---------- Section: FAQ ---------- */

.section-faq {
  padding: 180px 0 0;
}
.section-faq .container {
  display: flex;
  gap: 100px;
  align-items: flex-start;
}
.faq-heading {
  flex: none;
  width: 440px;
  padding-left: 80px;
}
.faq-support {
  margin-top: 32px;
}
.faq-support-title {
  font-size: 18px;
  font-weight: 700;
  color: #000;
}
.faq-support-text {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.5;
  color: #595959;
}
.faq-support-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 16px;
  font-weight: 600;
  color: var(--accessible-cyan);
  text-decoration: underline;
}
.faq-support-link:hover {
  text-decoration: none;
}
.faq-list {
  flex: 1;
  max-width: 740px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-left: auto;
}

.faq-item {
  border: 1px solid #B8B8B8;
  border-radius: 8px;
  background: transparent;
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 40px;
  background: none;
  border: none;
  text-align: left;
  font-family: inherit;
  font-size: 24px;
  line-height: 1.5;
  color: #000;
}
.faq-q .faq-icon {
  flex: none;
  width: 32px;
  height: 32px;
  position: relative;
}
.faq-icon::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid #000;
  border-radius: 50%;
}
.faq-icon::after {
  content: '';
  position: absolute;
  left: 9px;
  top: 15px;
  width: 14px;
  height: 2px;
  background: #000;
  border-radius: 1px;
}
.faq-icon span {
  position: absolute;
  left: 15px;
  top: 9px;
  width: 2px;
  height: 14px;
  background: #000;
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.faq-item[data-open] .faq-icon { transform: rotate(45deg); }
.faq-icon, .faq-item .faq-icon { transition: transform 0.2s ease; }

.faq-a {
  display: none;
  padding: 0 40px 26px;
  max-width: 740px;
  font-size: 16px;
  line-height: 1.5;
}
.faq-item[data-open] .faq-a { display: block; }

@media (max-width: 1100px) {
  .section-faq { padding-top: 90px; }
  .section-faq .container { flex-direction: column; gap: 40px; }
  .faq-heading { width: auto; padding-left: 0; }
  .faq-list { max-width: none; width: 100%; }
  .faq-q { font-size: 17px; padding: 16px 20px; }
  .faq-q .faq-icon { width: 26px; height: 26px; }
  .faq-icon::after { left: 6px; top: 12px; width: 12px; }
  .faq-icon span { left: 12px; top: 6px; height: 12px; }
  .faq-a { padding: 0 20px 20px; font-size: 15px; }
}

/* ---------- Final CTA + footer ---------- */

.final-cta {
  padding: 180px 0 0;
  text-align: center;
}
.final-cta .sub {
  margin-top: 24px;
  font-size: 16px;
  line-height: 1.3;
}

.trust-row {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.trust-row .badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  line-height: 1.5;
  color: #040000;
}
.trust-row .badge img { width: 25px; height: 25px; }

.final-cta .btn-black { margin-top: 30px; min-width: 170px; min-height: 53px; }

.footer-band {
  max-width: 623px;
  margin: 80px auto 0;
  padding: 80px 0 0;
  border-top: 1px solid #E8E8E8;
  text-align: center;
}
.footer-band .band-label { font-size: 16px; line-height: 1.3; }

.app-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 44px -40px 0;
  flex-wrap: wrap;
}
.btn-app {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  height: 60px;
  padding: 0 40px;
  background: #000;
  color: #fff;
  border-radius: 99px;
  font-size: 16px;
  line-height: 1.3;
}
.btn-app:hover { background: #222; }
.btn-app img { width: 20px; height: 20px; }

.subscribe-band {
  max-width: 623px;
  margin: 56px auto 0;
  padding-top: 60px;
  border-top: 1px solid #E8E8E8;
  text-align: center;
}

.subscribe-form {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 44px;
  flex-wrap: wrap;
}
.subscribe-form input[type="email"] {
  width: 360px;
  max-width: 100%;
  height: 60px;
  padding: 0 30px;
  border: 1px solid #000;
  border-radius: 99px;
  font-family: inherit;
  font-size: 16px;
  background: transparent;
  color: #000;
}
.subscribe-form input::placeholder { color: #B8B8B8; }
.subscribe-form button {
  height: 60px;
  padding: 0 36px;
  background: var(--brand-cyan);
  border: none;
  border-radius: 99px;
  font-size: 16px;
  font-weight: 600;
  color: #000;
}
.subscribe-form button:hover { filter: brightness(1.06); }
.subscribe-note {
  margin-top: 24px;
  font-size: 11px;
  color: #B8B8B8;
}
.subscribe-status { margin-top: 12px; font-size: 13px; min-height: 1em; }

.site-footer {
  margin-top: 54px;
  border-top: 1px solid #E8E8E8;
  padding: 40px 0 55px;
  text-align: center;
}
.social-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
}
.social-row a { display: flex; }
.social-row img { width: 28px; height: 28px; }
.social-row img.tiktok { width: 24px; height: 24px; }

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
  font-size: 13px;
}
.footer-links a:hover { text-decoration: underline; }
.footer-links span { color: rgba(0, 0, 0, 0.3); }

.footer-contact {
  margin-top: 24px;
  font-size: 11px;
  line-height: 2;
}
.footer-legal {
  max-width: 1006px;
  margin: 22px auto 0;
  font-size: 11px;
  line-height: 1.3;
  color: rgba(0, 0, 0, 0.4);
}
.footer-copyright {
  margin-top: 36px;
  font-size: 11px;
}

@media (max-width: 767px) {
  .final-cta { padding-top: 90px; }
  .footer-band { margin-top: 56px; padding-top: 56px; }
  .app-buttons { margin-left: 0; margin-right: 0; }
  .subscribe-band { margin-top: 64px; padding-top: 44px; }
  .subscribe-form input[type="email"] { width: 100%; }
  .subscribe-form button { width: 100%; }
}

/* ---------- Motion preferences ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}


/* Rotating announcement bar (focus) */
.uni-announce { height: 35px; background: var(--announce-black); color: #fff; z-index: 60; overflow: hidden; }
.uni-announce .uni-announce-msg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0 16px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0s linear 0.4s;
  white-space: nowrap;
}
/* Active message fades in; outgoing is fully hidden via visibility to avoid ghosting */
.uni-announce .uni-announce-msg.is-active { opacity: 1; visibility: visible; transition: opacity 0.4s ease, visibility 0s; }
@media (max-width: 480px) {
  .uni-announce .uni-announce-msg { font-size: 10px; letter-spacing: 0.05em; }
}

/* compact mobile comparison table (缩放比例不对): all 5 columns fit at 393px like Focus-M */
@media (max-width: 767px) {
  .table-scroll { margin: 0; padding: 0; overflow-x: visible; }
  .compare-table { min-width: 0; gap: 5px; margin-top: 32px; }
  .compare-col { border-radius: 10px; }
  .compare-col.feature { flex: 1.5; }
  .compare-col > div { height: 52px; font-size: 9px; line-height: 1.2; padding: 0 3px; gap: 2px; }
  .compare-col > div.head { height: 56px; font-size: 9.5px; }
  .compare-col.feature > div { padding-left: 8px; }
  .compare-col svg { width: 11px; height: 11px; }
}

/* mobile-friendly footer links: wrap, no dots, tap targets */
@media (max-width: 600px) {
  .footer-links { flex-wrap: wrap; gap: 6px 14px; padding: 0 16px; justify-content: center; }
  .footer-links span { display: none; }
  .footer-links a { padding: 6px 4px; display: inline-block; }
}