@charset "UTF-8";

:root {
  --bg: #FAFAF9;
  --bg-2: #F1F5F9;
  --panel: #FFFFFF;
  --line: #E4E4E7;
  --ink: #1C2430;
  --muted: #6B7280;
  --egg: #60A5FA;
  --egg-deep: #2563EB;
  --egg-soft: #DBEAFE;
  --shell: 1160px;
  --header-height: 72px;
  --mono: "JetBrains Mono", Consolas, "Courier New", monospace;
}

* { 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: 1.7;
  overflow-wrap: anywhere;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
svg { display: block; }
h1, h2, h3, p { overflow-wrap: anywhere; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--egg-deep); outline-offset: 3px; }
.page-shell { width: min(calc(100% - 48px), var(--shell)); margin: 0 auto; }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 13px;
  color: var(--egg-deep);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.2px;
}
.eyebrow::before { width: 14px; height: 2px; content: ""; background: currentColor; }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(250, 250, 249, .95);
  backdrop-filter: blur(12px);
}
.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: min(calc(100% - 48px), var(--shell));
  min-height: var(--header-height);
  margin: 0 auto;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 9px; font-size: 19px; font-weight: 900; letter-spacing: .3px; }
.brand img { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50% 50% 46% 46% / 58% 58% 42% 42%; object-fit: contain; background: #fff; }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 19px;
  height: 19px;
  border-radius: 6px;
  background: var(--egg-soft);
  color: var(--egg-deep);
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
}
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(11px, 1.8vw, 24px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 7px 0; border-bottom: 2px solid transparent; color: #4B5563; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--egg); color: var(--egg-deep); }
.nav-actions { display: flex; align-items: center; flex: none; gap: 9px; }
.nav-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  gap: 8px;
  padding: 0 17px;
  border: 1px solid var(--egg-deep);
  border-radius: 999px;
  background: var(--egg-deep);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: #fff; color: var(--egg-deep); }
.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: 10px; background: #fff; cursor: pointer; }
.menu-toggle span { display: block; width: 18px; 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(560px 340px at 88% -14%, rgba(96, 165, 250, .24), transparent 70%),
    radial-gradient(420px 300px at 2% 104%, rgba(96, 165, 250, .10), transparent 72%),
    linear-gradient(180deg, #FFFFFF 0%, var(--bg) 100%);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  align-items: center;
  gap: clamp(22px, 3.6vw, 48px);
  padding: 56px 0 26px;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 15px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.3px;
}
.hero-kicker b {
  padding: 3px 8px;
  border-radius: 5px;
  background: var(--egg-soft);
  color: var(--egg-deep);
  font-size: 9.5px;
  font-weight: 900;
  letter-spacing: 1.1px;
}
.hero h1 {
  margin: 0;
  color: #16202B;
  font-size: clamp(44px, 6.4vw, 78px);
  font-weight: 900;
  letter-spacing: clamp(-1px, -.3vw, -2.5px);
  line-height: 1.02;
}
.hero-subtitle { margin: 16px 0 0; color: var(--egg-deep); font-size: clamp(17px, 1.9vw, 22px); font-weight: 800; }
.hero-lead { max-width: 520px; margin: 13px 0 0; color: var(--muted); font-size: 14.5px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 24px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 13px;
  padding: 0 26px;
  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(--egg-deep); color: #fff; box-shadow: 0 14px 28px rgba(37, 99, 235, .22); }
.button-primary:hover { background: #1D4ED8; transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 32px; font-size: 15px; }
.text-link { color: #4B5563; border-bottom: 1px dashed #A9BCDA; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 4px; color: var(--egg-deep); }

.egg-panel {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel);
  box-shadow: 0 20px 40px rgba(23, 42, 70, .09);
}
.egg-head { display: flex; align-items: center; justify-content: space-between; margin: 0 0 14px; color: var(--egg-deep); font-family: var(--mono); font-size: 11px; letter-spacing: 1.4px; }
.egg-head b { color: var(--muted); font-weight: 700; }
.egg-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; padding: 0; margin: 0; list-style: none; }
.egg-grid li {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 78px;
  padding: 10px 6px;
  border: 1px solid #D7E5F8;
  border-radius: 50% 50% 46% 46% / 62% 62% 38% 38%;
  background: linear-gradient(180deg, #FFFFFF, #F2F7FF);
  text-align: center;
}
.egg-grid li:nth-child(2n) { background: linear-gradient(180deg, #FFFFFF, #E8F1FE); }
.egg-grid b { font-size: 13px; font-weight: 900; line-height: 1.3; }
.egg-grid small { margin-top: 3px; color: #7C8DA6; font-family: var(--mono); font-size: 10px; }
.fresh-bar {
  display: flex;
  align-items: center;
  gap: 9px;
  width: fit-content;
  max-width: 100%;
  padding: 8px 16px;
  margin: 0 0 34px;
  border: 1px dashed #A9C4E4;
  border-radius: 999px;
  color: #4C5F79;
  font-family: var(--mono);
  font-size: 11.5px;
}
.fresh-bar i { width: 7px; height: 7px; flex: none; border-radius: 50%; background: var(--egg); box-shadow: 0 0 0 4px rgba(96, 165, 250, .18); }

/* features：横滑条 */
.features { padding: 66px 0 70px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.section-heading { margin-bottom: 28px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(23px, 2.6vw, 32px); font-weight: 900; letter-spacing: -.5px; line-height: 1.32; }
.section-heading > p:last-child { max-width: 600px; margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(180px, 260px); align-items: end; gap: 22px; }
.section-heading-split > p:last-child { margin: 0 0 4px; }
.feature-track {
  display: flex;
  gap: 12px;
  padding: 4px 4px 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.feature-track::-webkit-scrollbar { height: 6px; }
.feature-track::-webkit-scrollbar-thumb { border-radius: 999px; background: #BFD4EF; }
.feature-card {
  flex: 0 0 clamp(232px, 27%, 286px);
  padding: 22px 20px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  scroll-snap-align: start;
}
.feature-no { display: block; margin-bottom: 9px; color: #93B4DC; font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: 1.5px; }
.feature-card h3 { margin: 0 0 7px; font-size: 17px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 12.8px; line-height: 1.8; }

/* shots：四列不同高 */
.shots { padding: 68px 0 76px; }
.shot-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); align-items: start; gap: 13px; }
.shot-card { margin: 0; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); overflow: hidden; box-shadow: 0 10px 22px rgba(23, 42, 70, .06); }
.shot-card img { width: 100%; height: auto; object-fit: cover; object-position: center 4%; }
.shot-tall img { aspect-ratio: 8 / 15; }
.shot-mid img { aspect-ratio: 9 / 14; }
.shot-short img { aspect-ratio: 9 / 12.5; }
.shot-card:nth-child(2) { margin-top: 24px; }
.shot-card:nth-child(3) { margin-top: 10px; }
.shot-card:nth-child(4) { margin-top: 32px; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 7px; padding: 10px 12px 11px; border-top: 1px solid var(--line); }
.shot-card figcaption b { color: var(--egg-deep); font-family: var(--mono); font-size: 10px; }
.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: 66px 0 72px; border-top: 1px solid var(--line); background: var(--bg-2); }
.faq-heading { max-width: 620px; }
.faq-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.faq-list details {
  padding: 4px 18px 2px;
  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: 13px 0; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 14.5px; font-weight: 900; line-height: 1.5; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border: 1px solid #C9DAF0; border-radius: 50%; }
.faq-list summary i::before,
.faq-list summary i::after { position: absolute; top: 50%; left: 50%; width: 8px; height: 1.5px; content: ""; background: var(--egg-deep); 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 0 14px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* reviews：单列带头像 */
.reviews { padding: 68px 0 74px; }
.review-list { display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; }
.review-card {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: start;
  gap: 14px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
}
.review-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--egg-soft);
  color: var(--egg-deep);
  font-size: 15px;
  font-weight: 900;
}
.review-meta { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 12px; }
.review-meta b { font-size: 13.5px; font-weight: 900; }
.review-meta time { color: #8A94A3; font-family: var(--mono); font-size: 10px; }
.review-card p { margin: 4px 0 0; color: #4B5563; font-size: 13px; line-height: 1.75; }

/* steps：横排卡 */
.steps { padding: 64px 0 70px; border-top: 1px solid var(--line); background: var(--bg-2); }
.step-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 0; list-style: none; }
.step-list li { padding: 20px 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.step-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 10px;
  border-radius: 50% 50% 46% 46% / 60% 60% 40% 40%;
  background: var(--egg-soft);
  color: var(--egg-deep);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
}
.step-list h3 { margin: 0 0 5px; font-size: 15.5px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 12.8px; line-height: 1.75; }

/* download：上按钮下文 */
.download { padding: 26px 0; }
.download-inner {
  padding: 42px clamp(22px, 4vw, 48px) 38px;
  border: 1px solid #CFE1F8;
  border-radius: 20px;
  background:
    radial-gradient(420px 220px at 92% 0%, rgba(96, 165, 250, .20), transparent 70%),
    linear-gradient(160deg, #FFFFFF, #EFF6FF 88%);
  text-align: center;
}
.download .eyebrow { justify-content: center; }
.download h2 { max-width: 640px; margin: 0 auto; }
.download .button-primary { margin: 22px 0 0; }
.download-note { max-width: 560px; margin: 16px auto 0; color: var(--muted); font-size: 13.5px; }
.download-notes { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 20px; padding: 18px 0 0; margin: 20px 0 0; border-top: 1px solid #DCE8F8; list-style: none; }
.download-notes li { color: #5A7391; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 6px; content: "·"; color: var(--egg); }

/* footer */
.site-footer { padding: 40px 0 48px; border-top: 1px solid var(--line); background: #fff; }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px 36px; align-items: start; }
.footer-brand strong { font-size: 17px; 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 20px; }
.footer-nav a { color: #4B5563; font-size: 12px; }
.footer-nav a:hover { color: var(--egg-deep); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; margin-top: 20px; 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: #8A94A3; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 330px); gap: 22px; }
  .shot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .shot-card:nth-child(2), .shot-card:nth-child(4) { margin-top: 20px; }
  .shot-card:nth-child(3) { margin-top: 0; }
  .faq-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: 8px 24px 16px;
    border-bottom: 1px solid var(--line);
    background: #fff;
    box-shadow: 0 14px 24px rgba(23, 42, 70, .10);
  }
  .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: 42px 0 22px; }
}
@media (max-width: 768px) {
  .page-shell, .nav-shell { width: calc(100% - 36px); }
  .section-heading-split { grid-template-columns: 1fr; gap: 8px; }
  .section-heading-split > p:last-child { margin: 0; }
  .egg-grid li { min-height: 68px; }
  .step-list { grid-template-columns: 1fr; }
  .step-list li { display: grid; grid-template-columns: 34px minmax(0, 1fr); align-items: start; gap: 12px; }
  .step-list span { margin-bottom: 0; }
  .shot-grid { gap: 10px; }
  .feature-card { flex-basis: clamp(220px, 74%, 320px); }
}
@media (max-width: 560px) {
  .brand { font-size: 16px; gap: 7px; }
  .brand img { width: 30px; height: 30px; }
  .brand-tag { display: none; }
  .nav-actions { gap: 7px; }
  .nav-download { min-height: 36px; padding: 0 10px; font-size: 11px; gap: 5px; }
  .nav-download svg { width: 14px; height: 14px; }
  .menu-toggle { width: 36px; height: 36px; }
  .hero h1 { font-size: clamp(38px, 12.4vw, 56px); }
  .hero-subtitle { font-size: 16px; }
  .egg-panel { padding: 16px; }
  .egg-grid b { font-size: 12px; }
  .shot-card:nth-child(2), .shot-card:nth-child(3), .shot-card:nth-child(4) { margin-top: 0; }
  .review-card { grid-template-columns: 1fr; gap: 8px; padding: 14px 16px; }
  .review-avatar { width: 34px; height: 34px; font-size: 13px; }
  .footer-grid { grid-template-columns: 1fr; }
  .fresh-bar { font-size: 10.5px; }
}
@media (max-width: 380px) {
  .brand { font-size: 16px; gap: 6px; }
  .brand img { width: 30px; height: 30px; }
  .brand-tag { display: none; }
  .nav-actions { gap: 7px; }
  .nav-download { min-height: 34px; padding: 0 9px; font-size: 10.5px; gap: 4px; }
  .nav-download svg { width: 14px; height: 14px; }
  .menu-toggle { width: 34px; height: 34px; }
  .hero h1 { font-size: 36px; }
  .button { width: 100%; }
  .egg-grid { gap: 7px; }
  .egg-grid li { min-height: 60px; }
}