@charset "UTF-8";

:root {
  --cream: #FFFBEB;
  --cream-2: #FBF1DE;
  --cream-3: #F6E8D0;
  --brown: #78350F;
  --brown-deep: #4E2109;
  --brown-soft: #9A5B2C;
  --ink: #2E1A0C;
  --muted: #7B5B41;
  --line: #E3D1B6;
  --shell: 1160px;
  --header-height: 70px;
  --mono: "JetBrains Mono", Consolas, "Courier New", monospace;
  --serif: "Songti SC", "SimSun", Georgia, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 18px); }
body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  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: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 13px;
  color: var(--brown-soft);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.2px;
  line-height: 1.4;
}
.eyebrow::before { width: 18px; height: 1px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 251, 235, .96);
  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: 20px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 9px; color: var(--brown); font-size: 20px; font-weight: 900; white-space: nowrap; }
.brand img { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50%; object-fit: contain; background: #fff; }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 19px;
  height: 19px;
  border-radius: 50%;
  background: var(--brown);
  color: var(--cream);
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 1.8vw, 24px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 7px 0; border-bottom: 2px solid transparent; color: var(--muted); font-size: 13px; font-weight: 700; white-space: nowrap; }
.primary-nav a:hover { border-bottom-color: var(--brown); color: var(--brown); }
.nav-actions { display: flex; align-items: center; flex: none; gap: 10px; }
.nav-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid var(--brown);
  border-radius: 999px;
  background: var(--brown);
  color: var(--cream);
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: transparent; color: var(--brown); }
.nav-download svg, .button svg { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; width: 18px; height: 2px; margin: 5px auto; background: var(--brown); 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: teacup */
.hero {
  position: relative;
  overflow: hidden;
  padding: 0 0 6px;
  color: var(--cream);
  background:
    radial-gradient(520px 320px at 50% 6%, rgba(255, 251, 235, .16), transparent 70%),
    linear-gradient(180deg, #7E3A12 0%, #64290C 62%, #4E2109 100%);
}
.hero::after {
  position: absolute;
  right: -10%;
  bottom: -120px;
  left: -10%;
  height: 200px;
  border-radius: 50%;
  content: "";
  background: var(--cream);
  opacity: .96;
}
.hero-stage { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; padding: 34px 0 96px; text-align: center; }
.hero-kicker { margin: 0 0 26px; color: #F0D6B8; font-family: var(--mono); font-size: 10.5px; letter-spacing: 2px; }
.cup-wrap { position: relative; margin-bottom: 40px; }
.steam { position: absolute; top: -66px; left: 50%; display: flex; align-items: flex-end; gap: 40px; transform: translateX(-50%); }
.steam i { display: block; width: 20px; height: 56px; border-left: 3px solid rgba(255, 246, 222, .55); border-radius: 50%; transform-origin: bottom center; animation: drift 4.6s ease-in-out infinite; }
.steam i:nth-child(2) { height: 70px; margin-bottom: 4px; animation-delay: .7s; }
.steam i:nth-child(3) { animation-delay: 1.5s; }
@keyframes drift {
  0%, 100% { transform: translateY(0) rotate(-2deg); opacity: .6; }
  50% { transform: translateY(-8px) rotate(3deg); opacity: .95; }
}
.cup { position: relative; width: min(370px, 82vw); }
.cup-body {
  position: relative;
  padding: 38px 24px 46px;
  border: 3px solid #F6E3C2;
  border-radius: 18px 18px 140px 140px / 16px 16px 78px 78px;
  background: linear-gradient(180deg, #FFFDF3 0%, #FBEFD5 100%);
  box-shadow: inset 0 -20px 34px rgba(120, 53, 15, .12), 0 24px 46px rgba(30, 12, 2, .28);
  text-align: center;
}
.cup-body::before {
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  height: 13px;
  border-radius: 999px;
  content: "";
  background: linear-gradient(180deg, #F6E3C2, #EED9B4);
}
.hero h1 {
  margin: 6px 0 6px;
  color: var(--brown);
  font-family: var(--serif);
  font-size: clamp(46px, 8.2vw, 82px);
  font-weight: 900;
  letter-spacing: 4px;
  line-height: 1.05;
}
.hero-subtitle { margin: 0; color: var(--brown-soft); font-size: clamp(13.5px, 1.7vw, 16px); font-weight: 700; line-height: 1.5; }
.cup-handle { position: absolute; top: 54px; right: -42px; width: 56px; height: 92px; border: 12px solid #F4E1C0; border-left: 0; border-radius: 0 60px 60px 0; }
.cup-saucer { position: absolute; bottom: -26px; left: 50%; width: 112%; height: 40px; border: 2px solid rgba(246, 227, 194, .6); border-radius: 50%; background: radial-gradient(ellipse at 50% 20%, rgba(255, 251, 235, .3), transparent 70%); transform: translateX(-50%); }
.hero-lead { max-width: 500px; margin: 0 auto; color: #F3DEC4; font-size: 13.6px; line-height: 1.85; }
.hero-actions { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 18px; margin-top: 22px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 13px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--cream); color: var(--brown); box-shadow: 0 12px 26px rgba(20, 8, 0, .26); }
.button-primary:hover { background: #FFF3D6; transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 34px; font-size: 15px; }
.text-link { color: #F3DEC4; border-bottom: 1px dashed rgba(243, 222, 196, .5); font-size: 12.8px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: #FFE1B4; }
.cup-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; padding: 0; margin: 26px 0 0; list-style: none; }
.cup-tags li { padding: 4px 14px; border: 1px solid rgba(246, 227, 194, .42); border-radius: 999px; color: #F7E7CF; font-size: 11.5px; }
.steam-row {
  position: absolute;
  z-index: 3;
  bottom: 26px;
  left: 50%;
  display: flex;
  gap: 42px;
  align-items: flex-end;
  transform: translateX(-50%);
  opacity: .55;
}
.steam-row i { display: block; width: 18px; height: 34px; border-left: 2px solid var(--brown); border-radius: 50%; }
.steam-row i:nth-child(2n) { height: 46px; }

/* features: four in a row */
.features { padding: 66px 0 74px; background: var(--cream); }
.section-heading { margin-bottom: 30px; }
.section-heading h2, .download h2 { margin: 0; color: var(--brown-deep); font-family: var(--serif); font-size: clamp(23px, 2.7vw, 33px); font-weight: 900; letter-spacing: .5px; line-height: 1.35; }
.section-heading > p:last-child { max-width: 620px; margin: 11px 0 0; color: var(--muted); font-size: 13.6px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(200px, 300px); align-items: end; gap: 26px; }
.section-heading-split > p:last-child { margin: 0 0 4px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.feature-card {
  padding: 24px 20px 22px;
  border: 1px solid var(--line);
  border-radius: 14px 14px 30px 14px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(120, 53, 15, .05);
}
.feature-no { display: block; margin-bottom: 9px; color: var(--brown-soft); font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: 1.6px; }
.feature-card h3 { margin: 0 0 7px; color: var(--brown); font-size: 17px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 12.8px; line-height: 1.8; }

/* shots: three columns, first spans two rows */
.shots { padding: 68px 0 78px; border-top: 1px solid var(--line); background: var(--cream-2); }
.shot-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; max-width: 1010px; margin: 0 auto; }
.shot-card { display: flex; flex-direction: column; margin: 0; border: 1px solid var(--line); border-radius: 16px; background: #fff; overflow: hidden; }
.shot-card img { width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 26%; }
.shot-card:first-child { grid-row: span 2; }
.shot-card:first-child img { flex: 1; height: 100%; min-height: 0; aspect-ratio: auto; }
.shot-card:nth-child(4) { grid-column: 2 / span 2; }
.shot-card:nth-child(4) img { aspect-ratio: 16 / 9; object-position: center 30%; }
.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-soft); font-family: var(--mono); font-size: 10px; }
.shot-card figcaption span { display: flex; flex-direction: column; color: var(--brown-deep); font-size: 13.5px; font-weight: 800; line-height: 1.4; }
.shot-card figcaption small { color: var(--muted); font-size: 10.5px; font-weight: 500; }

/* faq */
.faq { padding: 66px 0 74px; background: var(--cream); }
.faq-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(24px, 4vw, 54px); }
.faq-heading { position: sticky; top: calc(var(--header-height) + 26px); align-self: start; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 0; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; color: var(--brown-deep); font-size: 15.5px; font-weight: 900; }
.faq-list summary i { position: relative; flex: none; width: 24px; height: 24px; border: 1px solid var(--line); border-radius: 50%; background: #fff; }
.faq-list summary i::before,
.faq-list summary i::after { position: absolute; top: 50%; left: 50%; width: 9px; height: 1.5px; content: ""; background: var(--brown-soft); 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 26px 16px 0; margin: 0; color: var(--muted); font-size: 13.4px; line-height: 1.85; }

/* reviews: two columns with avatar */
.reviews { padding: 68px 0 76px; border-top: 1px solid var(--line); background: var(--cream-2); }
.review-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; padding: 0; margin: 0; list-style: none; }
.review-card {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 17px 19px;
  border: 1px solid var(--line);
  border-radius: 20px 6px 20px 6px;
  background: #fff;
}
.review-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--cream-3);
  color: var(--brown);
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 900;
}
.review-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 5px; }
.review-meta b { color: var(--brown); font-size: 13px; font-weight: 900; }
.review-meta time { color: #A98A6C; font-family: var(--mono); font-size: 9.5px; }
.review-card p { margin: 0; color: #5C422C; font-size: 12.8px; line-height: 1.78; }

/* steps: horizontal */
.steps { padding: 66px 0 74px; background: var(--cream); }
.step-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; padding: 0; margin: 0; list-style: none; counter-reset: step; }
.step-list li { position: relative; padding: 26px 22px 24px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.step-list li::after {
  position: absolute;
  top: 44px;
  right: -16px;
  width: 16px;
  height: 1px;
  content: "";
  background: var(--line);
}
.step-list li:last-child::after { display: none; }
.step-list span { display: block; margin-bottom: 8px; color: var(--cream-3); -webkit-text-stroke: 1px var(--brown-soft); font-family: var(--mono); font-size: 30px; font-weight: 700; line-height: 1; }
.step-list h3 { margin: 0 0 6px; color: var(--brown); font-size: 16.5px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 12.8px; line-height: 1.75; }

/* download: copy left, button right */
.download { padding: 20px 0 34px; background: var(--cream); }
.download-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  align-items: center;
  gap: clamp(24px, 4vw, 52px);
  padding: 44px clamp(24px, 4vw, 52px);
  border-radius: 26px;
  background:
    radial-gradient(360px 220px at 8% 0%, rgba(255, 251, 235, .16), transparent 70%),
    linear-gradient(120deg, #7E3A12, #5A2609 88%);
}
.download-copy .eyebrow { color: #F0CDA6; }
.download h2 { color: var(--cream); max-width: 560px; }
.download-copy > p { max-width: 480px; margin: 11px 0 0; color: #EFD8BC; font-size: 13.6px; }
.download-notes { display: flex; flex-wrap: wrap; gap: 8px 22px; padding: 16px 0 0; margin: 18px 0 0; border-top: 1px solid rgba(246, 227, 194, .25); list-style: none; }
.download-notes li { color: #F0D6B8; font-family: var(--mono); font-size: 10.5px; }
.download-notes li::before { margin-right: 8px; content: "·"; color: #FFE1B4; }
.download-action { display: flex; flex-direction: column; align-items: flex-start; gap: 11px; }
.download-hint { margin: 0; color: #E7C7A3; font-family: var(--mono); font-size: 10.5px; }
.download .button-primary { background: var(--cream); color: var(--brown); }

/* footer */
.site-footer { padding: 40px 0 48px; border-top: 1px solid var(--line); background: var(--cream-3); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 40px; align-items: start; }
.footer-brand strong { color: var(--brown); font-family: var(--serif); font-size: 19px; font-weight: 900; }
.footer-brand p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.footer-nav a { color: var(--muted); font-size: 12px; }
.footer-nav a:hover { color: var(--brown); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin-top: 22px; padding-top: 16px; 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: #96775C; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1000px) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .download-inner { grid-template-columns: minmax(0, 1fr) 220px; }
  .faq-layout { gap: 30px; }
}
@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    padding: 8px 24px 16px;
    border-bottom: 1px solid var(--line);
    background: var(--cream);
    box-shadow: 0 16px 26px rgba(60, 30, 8, .16);
  }
  .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); }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
  .review-list { grid-template-columns: 1fr; }
  .step-list { grid-template-columns: 1fr; gap: 12px; }
  .step-list li::after { top: auto; right: auto; bottom: -13px; left: 34px; width: 1px; height: 13px; }
  .download-inner { grid-template-columns: 1fr; }
  .section-heading-split { grid-template-columns: 1fr; gap: 9px; }
  .section-heading-split > p:last-child { margin: 0; }
  .shot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .shot-card:first-child { grid-row: auto; }
  .shot-card:first-child img { aspect-ratio: 4 / 5; height: auto; }
  .shot-card:nth-child(4) { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .nav-shell { gap: 10px; }
  .brand { font-size: 16px; gap: 7px; }
  .brand img { width: 32px; height: 32px; }
  .brand-tag { display: none; }
  .nav-download { min-height: 38px; padding: 0 10px; font-size: 11.5px; gap: 6px; }
  .menu-toggle { width: 38px; height: 38px; }
  .hero-stage { padding: 26px 0 84px; }
  .hero-kicker { margin-bottom: 20px; letter-spacing: 1.2px; }
  .cup-wrap { margin-bottom: 34px; }
  .steam { top: -54px; gap: 26px; }
  .steam i { height: 44px; width: 16px; }
  .steam i:nth-child(2) { height: 56px; }
  .cup-handle { right: -30px; width: 40px; height: 74px; border-width: 9px; }
  .hero h1 { letter-spacing: 2px; }
  .hero-actions { gap: 12px; }
  .button { width: 100%; }
  .steam-row { gap: 26px; bottom: 20px; }
  .feature-grid { grid-template-columns: 1fr; }
  .shot-grid { grid-template-columns: 1fr; gap: 12px; }
  .shot-card:nth-child(4) { grid-column: auto; }
  .shot-card:nth-child(4) img { aspect-ratio: 4 / 5; }
  .review-card { grid-template-columns: 38px minmax(0, 1fr); gap: 11px; padding: 15px 16px; }
  .review-avatar { width: 38px; height: 38px; font-size: 16px; }
  .review-meta { flex-wrap: wrap; }
  .download-inner { padding: 32px 22px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .brand { font-size: 15px; }
  .nav-download { min-height: 34px; padding: 0 8px; font-size: 10.5px; }
  .nav-download svg { width: 14px; height: 14px; }
  .menu-toggle { width: 34px; height: 34px; }
  .hero h1 { font-size: 44px; letter-spacing: 1px; }
  .hero-subtitle { font-size: 13px; }
  .hero-lead { font-size: 12.8px; }
  .cup-handle { display: none; }
  .download-inner { padding: 26px 16px; }
}