@charset "UTF-8";

:root {
  --bg: #ffffff;
  --bg-2: #faf8ff;
  --panel: #ffffff;
  --line: #e7e1fb;
  --ink: #1b1630;
  --muted: #6f6a85;
  --violet: #6c4cf1;
  --violet-soft: #efeaff;
  --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) + 18px); }
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;
}
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(--violet); 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(--violet);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.4px;
  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, 255, 255, .95);
  backdrop-filter: blur(14px);
}
.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: 18px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 10px; font-size: 20px; font-weight: 900; letter-spacing: -.4px; }
.brand img { width: 38px; height: 38px; border-radius: 10px; object-fit: contain; background: #fff; }
.brand-tag {
  display: inline-flex;
  align-items: center;
  height: 19px;
  padding: 0 7px;
  border-radius: 3px;
  background: var(--violet-soft);
  color: var(--violet);
  font-family: var(--mono);
  font-size: 8.5px;
  font-style: normal;
  font-weight: 900;
  letter-spacing: .5px;
}
.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: #66607d; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--violet); color: var(--ink); }
.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(--violet);
  border-radius: 999px;
  background: var(--violet);
  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(--violet); }
.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(--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 420px at 50% -10%, rgba(108, 76, 241, .16), transparent 70%),
    radial-gradient(400px 320px at 6% 88%, rgba(108, 76, 241, .07), transparent 72%),
    linear-gradient(180deg, #f8f5ff 0%, #ffffff 76%);
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image: radial-gradient(rgba(108, 76, 241, .16) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .8), transparent 62%);
  pointer-events: none;
}
.hero-stage {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) 58px;
  align-items: center;
  gap: clamp(12px, 3vw, 46px);
  padding: 46px 0 10px;
}
.rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  color: #a79cd8;
  font-family: var(--mono);
  font-size: 11px;
}
.rail span { writing-mode: vertical-rl; letter-spacing: 6px; }
.rail-left { border-right: 1px solid var(--line); padding-right: 16px; }
.rail-right { border-left: 1px solid var(--line); padding-left: 16px; }
.hero-center { max-width: 620px; margin: 0 auto; text-align: center; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  padding: 4px 12px;
  border: 1px solid #d9cffb;
  border-radius: 999px;
  color: var(--violet);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.8px;
}
.hero h1 {
  margin: 0;
  color: #24184f;
  font-size: clamp(40px, 6.4vw, 78px);
  font-weight: 900;
  letter-spacing: clamp(-2px, -.5vw, -4px);
  line-height: 1.02;
}
.hero-subtitle {
  margin: 16px 0 0;
  color: var(--violet);
  font-size: clamp(18px, 2.2vw, 25px);
  font-weight: 800;
  line-height: 1.4;
}
.hero-lead { max-width: 520px; margin: 10px auto 0; color: var(--muted); font-size: 14.5px; }
.hero-actions { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 18px; margin-top: 24px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  gap: 14px;
  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(--violet); color: #fff; box-shadow: 0 14px 28px rgba(108, 76, 241, .26); }
.button-primary:hover { background: #7d60f5; transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 34px; font-size: 15px; }
.text-link { color: #575270; border-bottom: 1px dashed #c5bbea; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--violet); }

.hero-poster { position: relative; width: min(100%, 292px); margin: 30px auto 0; }
.phone-shell {
  padding: 8px;
  border: 1px solid #d9cffb;
  border-radius: 32px;
  background: #fff;
  box-shadow: 0 26px 50px rgba(64, 38, 148, .18);
}
.phone-shell::before {
  display: block;
  width: 82px;
  height: 5px;
  margin: 0 auto 8px;
  border-radius: 4px;
  background: #e3dcfa;
  content: "";
}
.phone-shell img { width: 100%; height: auto; aspect-ratio: 640 / 800; object-fit: cover; border-radius: 24px; }
.hero-badge {
  position: absolute;
  right: -14px;
  bottom: 20px;
  padding: 8px 14px 9px;
  border-radius: 8px;
  background: var(--violet);
  color: #fff;
  box-shadow: 0 12px 24px rgba(64, 38, 148, .3);
  text-align: left;
}
.hero-badge b { display: block; font-family: var(--mono); font-size: 11.5px; letter-spacing: .4px; line-height: 1.5; }
.hero-badge span { display: block; color: #ddd4ff; font-size: 10px; }
.hero-foot { position: relative; z-index: 2; display: flex; justify-content: center; padding: 6px 0 30px; }
.hero-scroll {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid #cfc3f6;
  border-radius: 50%;
  color: var(--violet);
  font-size: 18px;
  line-height: 1;
  background: #fff;
  transition: transform .18s ease, background .18s ease;
}
.hero-scroll:hover { background: var(--violet); color: #fff; transform: translateY(3px); }

/* features */
.features { padding: 72px 0 76px; border-bottom: 1px solid var(--line); }
.section-heading { margin-bottom: 30px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(25px, 2.9vw, 35px); font-weight: 900; letter-spacing: -.8px; line-height: 1.3; }
.section-heading > p:last-child { max-width: 620px; margin: 11px 0 0; color: var(--muted); font-size: 14px; }
.section-heading-center { text-align: center; }
.section-heading-center > p:last-child { margin-left: auto; margin-right: auto; }
.section-heading-center .eyebrow { justify-content: center; }
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.feature-card {
  padding: 26px 20px 30px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--violet);
  border-radius: 4px 4px 12px 12px;
  background: linear-gradient(180deg, var(--violet-soft), #fff 72%);
  min-height: 176px;
}
.feature-no { display: block; margin-bottom: 20px; color: var(--violet); font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: 1.6px; }
.feature-card h3 { margin: 0 0 7px; font-size: 17px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }

/* shots */
.shots { padding: 70px 0 84px; background: var(--bg-2); }
.shot-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; max-width: 900px; margin: 0 auto; }
.shot-card { margin: 0; border: 1px solid var(--line); border-radius: 12px; background: #fff; overflow: hidden; box-shadow: 0 12px 26px rgba(64, 38, 148, .06); }
.shot-card:nth-child(even) { margin-top: 26px; }
.shot-card img { width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; object-position: center 18%; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 9px; padding: 12px 15px 14px; border-top: 1px solid var(--line); }
.shot-card figcaption b { color: var(--violet); 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: 72px 0 78px; }
.faq-wrap { max-width: 880px; }
.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: 17px 2px;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 16px; font-weight: 900; }
.faq-list summary i { position: relative; flex: none; width: 24px; height: 24px; border: 1px solid #d9cffb; border-radius: 50%; background: var(--violet-soft); }
.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 1.5px;
  content: "";
  background: var(--violet);
  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 34px 17px 2px; margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.85; }

/* reviews */
.reviews { padding: 72px 0 80px; border-top: 1px solid var(--line); background: var(--bg-2); }
.review-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding: 0; margin: 0; list-style: none; }
.review-card { position: relative; padding: 22px 20px 18px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.review-card::before { display: block; margin-bottom: 6px; color: #cabdf5; font-family: Georgia, serif; font-size: 26px; line-height: .8; content: "“"; }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 6px; padding-bottom: 8px; margin-bottom: 8px; border-bottom: 1px solid var(--line); }
.review-meta b { color: var(--violet); font-size: 13px; font-weight: 900; }
.review-meta time { color: #9a94ad; font-family: var(--mono); font-size: 9.5px; }
.review-card p { margin: 0; color: #5b5570; font-size: 13px; line-height: 1.8; }

/* steps */
.steps { padding: 72px 0 80px; }
.step-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; padding: 0; margin: 0; list-style: none; }
.step-list li { position: relative; padding: 52px 20px 20px; border-radius: 12px; background: var(--violet-soft); }
.step-list li::before {
  position: absolute;
  top: 26px;
  left: 20px;
  color: var(--violet);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  content: "STEP";
}
.step-list span {
  position: absolute;
  top: 14px;
  right: 18px;
  color: #cfc3f6;
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
}
.step-list h3 { margin: 0 0 6px; font-size: 16px; font-weight: 900; }
.step-list p { margin: 0; color: #5f5975; font-size: 13px; line-height: 1.8; }

/* download */
.download { padding: 0 0 64px; }
.download-inner {
  padding: 48px clamp(24px, 5vw, 56px) 42px;
  border-radius: 18px;
  background:
    radial-gradient(420px 220px at 84% 0%, rgba(255, 255, 255, .22), transparent 70%),
    linear-gradient(120deg, #6c4cf1, #8b6bff 80%);
  color: #fff;
  text-align: center;
}
.download .eyebrow { justify-content: center; color: #ded4ff; }
.download h2 { max-width: 640px; margin: 0 auto; color: #fff; }
.download-inner > p { max-width: 520px; margin: 11px auto 24px; color: #e6deff; font-size: 14px; }
.download .button-primary { background: #fff; color: var(--violet); box-shadow: 0 14px 26px rgba(40, 20, 100, .26); }
.download .button-primary:hover { background: #f4f0ff; }
.download-notes { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; padding: 20px 0 0; margin: 26px 0 0; border-top: 1px solid rgba(255, 255, 255, .3); list-style: none; }
.download-notes li { color: #e9e2ff; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 7px; content: "✦"; }

/* footer */
.site-footer { padding: 42px 0 52px; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 20px 40px; align-items: start; }
.footer-brand strong { font-size: 18px; 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: #5f5975; font-size: 12px; }
.footer-nav a:hover { color: var(--violet); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin-top: 22px; padding-top: 18px; 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: #8f89a3; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1180px) {
  .brand-tag { display: none; }
}
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-stage { grid-template-columns: 42px minmax(0, 1fr) 42px; gap: 10px; }
}
@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 16px 26px rgba(40, 20, 100, .12);
  }
  .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-stage { grid-template-columns: 1fr; padding: 38px 0 6px; }
  .rail { display: none; }
  .hero-center { max-width: 560px; }
  .review-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step-list { grid-template-columns: 1fr; }
  .download-notes li { font-size: 10.5px; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .brand { font-size: 17px; gap: 8px; }
  .brand img { width: 32px; height: 32px; }
  .nav-actions { gap: 8px; }
  .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(34px, 12vw, 46px); }
  .hero-lead { font-size: 13.5px; }
  .hero-poster { width: min(100%, 268px); }
  .hero-badge { right: -6px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .shot-grid { grid-template-columns: 1fr; gap: 14px; }
  .shot-card:nth-child(even) { margin-top: 0; }
  .shot-card img { aspect-ratio: 16 / 10; }
  .review-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .download h2 { font-size: 23px; }
  .download .button-large { width: 100%; }
}
@media (max-width: 380px) {
  .brand { font-size: 15px; gap: 6px; }
  .brand img { width: 28px; height: 28px; }
  .nav-download { min-height: 32px; padding: 0 8px; font-size: 10px; gap: 4px; }
  .nav-download svg { width: 12px; height: 12px; }
  .menu-toggle { width: 32px; height: 32px; }
  .hero h1 { font-size: 32px; }
  .hero-subtitle { font-size: 16px; }
  .button { width: 100%; padding: 0 12px; font-size: 13px; }
  .hero-poster { width: 92%; }
}