@charset "UTF-8";

:root {
  --bg: #FFF9EC;
  --bg-2: #FEF3D6;
  --panel: #FFFDF7;
  --line: #EBDCC0;
  --ink: #33200F;
  --muted: #8B6E4D;
  --brown: #92400E;
  --brown-deep: #6B2F0B;
  --cream: #FDE68A;
  --shell: 1140px;
  --header-height: 70px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 16px); }
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  overflow-wrap: anywhere;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
svg { display: block; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--brown); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 48px), var(--shell)); margin: 0 auto; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 12px;
  color: var(--brown);
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 2.2px;
  line-height: 1.4;
}
.eyebrow::before { width: 16px; height: 2px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 249, 236, .95);
  backdrop-filter: blur(12px);
}
.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 48px), var(--shell));
  min-height: var(--header-height);
  margin: 0 auto;
  gap: 16px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 9px; font-size: 19px; font-weight: 900; }
.brand img { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 11px; object-fit: contain; background: #fff; }
.brand-tag {
  padding: 1px 6px;
  border: 1px solid #E4C88F;
  border-radius: 5px;
  color: var(--brown);
  font-size: 9.5px;
  font-style: normal;
  font-weight: 800;
  letter-spacing: .6px;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(11px, 1.8vw, 23px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 7px 0; border-bottom: 2px solid transparent; color: #7B5A38; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--brown); color: var(--brown-deep); }
.nav-actions { display: flex; align-items: center; flex: none; gap: 10px; }
.nav-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  gap: 7px;
  padding: 0 16px;
  border: 2px solid var(--brown);
  border-radius: 9px;
  background: var(--cream);
  color: var(--brown-deep);
  font-size: 12.5px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: var(--brown); color: var(--cream); }
.nav-download svg, .button svg { width: 16px; height: 16px; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 9px; background: #fff; cursor: pointer; }
.menu-toggle span { display: block; width: 17px; height: 2px; margin: 5px auto; background: var(--ink); transition: transform .18s ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* hero */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(540px 320px at 82% -10%, rgba(253, 230, 138, .55), transparent 74%),
    linear-gradient(180deg, #FFFBEF 0%, var(--bg) 100%);
}
.hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background-image: repeating-linear-gradient(90deg, rgba(146, 64, 14, .05) 0 1px, transparent 1px 52px);
  mask-image: linear-gradient(180deg, #000, transparent 88%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  align-items: center;
  gap: clamp(26px, 4vw, 52px);
  padding: 54px 0 30px;
}
.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 15px;
  color: #8A6238;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.6px;
}
.hero-kicker b {
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--brown);
  color: var(--cream);
  font-size: 9.5px;
  font-weight: 900;
  letter-spacing: 1.4px;
}
.hero h1 { margin: 0; font-size: clamp(46px, 6.6vw, 82px); font-weight: 900; letter-spacing: -2px; line-height: 1; }
.hero-subtitle { margin: 15px 0 0; color: var(--brown); font-size: clamp(17px, 2vw, 22px); font-weight: 800; }
.hero-lead { max-width: 480px; margin: 12px 0 0; color: var(--muted); font-size: 14px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 16px 20px; margin-top: 24px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  gap: 11px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--brown); color: var(--cream); box-shadow: 0 12px 24px rgba(146, 64, 14, .22); }
.button-primary:hover { background: var(--brown-deep); transform: translateY(-2px); }
.button-large { min-height: 52px; padding: 0 30px; font-size: 15px; }
.text-link { color: #7B5A38; border-bottom: 1px dashed #D5B98F; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 4px; color: var(--brown); }

/* couch scene */
.couch-scene { position: relative; width: 100%; max-width: 360px; margin: 0 auto; }
.scene-screen {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  border: 3px solid var(--brown);
  border-radius: 12px;
  background: linear-gradient(160deg, #FFE9A8, #FDE68A 62%, #F6CE6A);
  box-shadow: inset 0 0 0 6px rgba(255, 253, 247, .8);
}
.screen-play {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-top: 17px solid transparent;
  border-bottom: 17px solid transparent;
  border-left: 26px solid var(--brown);
  transform: translate(-32%, -50%);
}
.screen-bar {
  position: absolute;
  right: 14px;
  bottom: 12px;
  left: 14px;
  height: 5px;
  border-radius: 3px;
  background: rgba(146, 64, 14, .28);
}
.screen-bar::before {
  display: block;
  width: 38%;
  height: 100%;
  content: "";
  border-radius: 3px;
  background: var(--brown);
}
.scene-sofa { position: relative; width: 92%; height: 108px; margin: -14px auto 0; }
.sofa-back {
  position: absolute;
  top: 4px;
  left: 4%;
  width: 92%;
  height: 52px;
  border: 3px solid var(--brown);
  border-radius: 14px 14px 6px 6px;
  background: #F7C978;
}
.sofa-seat {
  position: absolute;
  top: 50px;
  left: 0;
  width: 100%;
  height: 40px;
  border: 3px solid var(--brown);
  border-radius: 8px;
  background: #EFBE6B;
}
.sofa-arm { position: absolute; top: 30px; width: 22px; height: 60px; border: 3px solid var(--brown); border-radius: 10px; background: #F2C27B; }
.sofa-arm-l { left: -4px; }
.sofa-arm-r { right: -4px; }
.sofa-leg { position: absolute; bottom: 0; width: 10px; height: 16px; border-radius: 0 0 4px 4px; background: var(--brown); }
.sofa-leg-l { left: 16%; }
.sofa-leg-r { right: 16%; }
.popcorn-row { position: relative; z-index: 2; display: flex; align-items: flex-end; gap: 8px; padding: 0 0 26px; }
.popcorn-row i { display: block; width: 9px; height: 9px; border-radius: 50%; background: #EDBE6C; }
.popcorn-row i:nth-child(2n) { width: 13px; height: 13px; background: var(--brown); opacity: .55; }
.popcorn-row i:nth-child(3n) { width: 7px; height: 7px; background: var(--cream); border: 1.5px solid #E4C88F; }

/* features */
.features { padding: 68px 0 72px; border-bottom: 1px solid var(--line); }
.section-heading { margin-bottom: 28px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(23px, 2.6vw, 33px); font-weight: 900; letter-spacing: -.4px; line-height: 1.3; }
.section-heading > p:last-child { max-width: 580px; margin: 10px 0 0; color: var(--muted); font-size: 13.5px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(170px, 250px); align-items: end; gap: 22px; }
.section-heading-split > p:last-child { margin: 0 0 3px; }
.feature-grid { display: grid; grid-template-columns: 1.15fr 1fr 1fr; grid-template-rows: auto auto; gap: 12px; }
.feature-main { grid-row: span 2; }
.feature-card {
  padding: 24px 22px 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
}
.feature-main { background: linear-gradient(165deg, #FFF6DF, var(--panel) 70%); border-color: #E9D3A8; }
.feature-no { display: block; margin-bottom: 8px; color: #C08A3E; font-size: 10.5px; font-weight: 800; letter-spacing: 2px; }
.feature-card h3 { margin: 0 0 6px; font-size: 17px; font-weight: 900; }
.feature-main h3 { font-size: 20px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 12.9px; line-height: 1.8; }
.feature-main p { max-width: 360px; }

/* shots */
.shots { padding: 66px 0 74px; background: var(--bg-2); }
.shot-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.shot-card { margin: 0; border: 1px solid #E7D3AE; border-radius: 14px; background: var(--panel); overflow: hidden; }
.shot-card img { width: 100%; height: auto; aspect-ratio: 3 / 5; object-fit: cover; object-position: center top; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 9px; padding: 11px 14px 12px; border-top: 1px solid var(--line); }
.shot-card figcaption b { color: var(--brown); font-size: 10.5px; font-weight: 800; }
.shot-card figcaption span { display: flex; flex-direction: column; font-size: 13px; font-weight: 800; line-height: 1.4; }
.shot-card figcaption small { color: var(--muted); font-size: 10.5px; font-weight: 500; }

/* faq */
.faq { padding: 68px 0 74px; }
.faq-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(22px, 4vw, 48px); }
.faq-heading { position: sticky; top: calc(var(--header-height) + 24px); align-self: start; }
.faq-list { display: grid; gap: 9px; }
.faq-list details { border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 14px 16px; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 14.8px; font-weight: 900; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border: 1px solid #E4C88F; border-radius: 6px; background: #FFF6DF; }
.faq-list summary i::before,
.faq-list summary i::after { position: absolute; top: 50%; left: 50%; width: 9px; height: 1.6px; content: ""; background: var(--brown); transform: translate(-50%, -50%); }
.faq-list summary i::after { transform: translate(-50%, -50%) rotate(90deg); transition: transform .2s ease; }
.faq-list details[open] summary i::after { transform: translate(-50%, -50%) rotate(0); }
.faq-list details p { padding: 0 16px 14px; margin: 0; color: var(--muted); font-size: 13.1px; line-height: 1.85; }

/* reviews */
.reviews { padding: 66px 0 74px; border-top: 1px solid var(--line); background: var(--bg-2); }
.review-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px; padding: 0; margin: 0; list-style: none; }
.review-card {
  padding: 15px 17px 16px;
  border: 1px solid #E7D3AE;
  border-radius: 12px;
  background: var(--panel);
}
.review-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 5px; }
.review-meta b { color: var(--brown); font-size: 12.8px; font-weight: 900; }
.review-meta time { color: #B08C60; font-size: 10px; }
.review-card p { margin: 0; color: #6E5334; font-size: 12.8px; line-height: 1.78; }

/* steps */
.steps { padding: 66px 0 72px; }
.step-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 0; list-style: none; counter-reset: none; }
.step-list li { position: relative; padding: 22px 20px 20px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.step-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 12px;
  border: 2px solid var(--brown);
  border-radius: 50%;
  background: var(--cream);
  color: var(--brown-deep);
  font-size: 15px;
  font-weight: 900;
}
.step-list h3 { margin: 0 0 4px; font-size: 16px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 12.9px; line-height: 1.75; }

/* download */
.download { padding: 24px 0 40px; }
.download-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap-reverse;
  gap: 26px;
  padding: 40px clamp(22px, 4.5vw, 52px);
  border: 2px solid #E4C88F;
  border-radius: 16px;
  background:
    radial-gradient(340px 200px at 8% 0%, rgba(253, 230, 138, .7), transparent 74%),
    #FFFCF2;
}
.download-action { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.download-copy { min-width: 0; flex: 1 1 300px; }
.download .eyebrow { color: var(--brown); }
.download h2 { max-width: 520px; }
.download-copy > p:last-child { max-width: 460px; margin: 10px 0 0; color: var(--muted); font-size: 13.3px; }
.download-notes { display: flex; flex-wrap: wrap; gap: 6px 16px; padding: 0; margin: 0; list-style: none; }
.download-notes li { color: #8A6238; font-size: 11.5px; }
.download-notes li::before { margin-right: 5px; content: "·"; color: var(--brown); }

/* footer */
.site-footer { padding: 38px 0 46px; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 14px 34px; align-items: start; }
.footer-brand strong { font-size: 17px; font-weight: 900; }
.footer-brand p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
.footer-nav a { color: #7B5A38; font-size: 12px; }
.footer-nav a:hover { color: var(--brown); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.footer-meta p { margin: 0; }
.footer-meta a { color: var(--muted); }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #A08157; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 300px); gap: 26px; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-main { grid-row: auto; grid-column: span 2; }
  .review-list { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: 6px 22px 14px;
    border-bottom: 1px solid var(--line);
    background: var(--bg);
    box-shadow: 0 14px 24px rgba(120, 80, 30, .14);
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .hero-grid { grid-template-columns: 1fr; padding: 40px 0 24px; }
  .couch-scene { max-width: 300px; margin: 6px auto 0; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
}
@media (max-width: 768px) {
  .step-list { grid-template-columns: 1fr; }
  .download-inner { flex-direction: column; align-items: stretch; }
  .download-action { align-items: stretch; }
}
@media (max-width: 560px) {
  .page-shell, .nav-shell { width: calc(100% - 30px); }
  .hero h1 { font-size: clamp(38px, 12vw, 50px); }
  .hero-subtitle { font-size: 16px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-main { grid-column: auto; }
  .shot-grid { grid-template-columns: 1fr; }
  .section-heading-split { grid-template-columns: 1fr; gap: 8px; }
  .section-heading-split > p:last-child { margin: 0; }
  .button { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .couch-scene { max-width: 260px; }
  .scene-sofa { height: 92px; }
  .sofa-back { height: 44px; }
  .sofa-seat { top: 44px; height: 34px; }
  .sofa-arm { top: 26px; height: 52px; width: 18px; }
}
@media (max-width: 380px) {
  .brand { font-size: 16px; gap: 7px; }
  .brand img { width: 30px; height: 30px; }
  .brand-tag { display: none; }
  .nav-download { min-height: 34px; padding: 0 8px; font-size: 11px; gap: 4px; }
  .nav-download svg { width: 13px; height: 13px; }
  .menu-toggle { width: 34px; height: 34px; }
  .hero h1 { font-size: 35px; letter-spacing: -1px; }
  .hero-kicker { font-size: 10px; }
  .popcorn-row { gap: 6px; padding-bottom: 20px; }
  .popcorn-row i { width: 7px; height: 7px; }
  .popcorn-row i:nth-child(2n) { width: 10px; height: 10px; }
  .couch-scene { max-width: 230px; }
  .feature-card { padding: 20px 18px 18px; }
}