@charset "UTF-8";

:root {
  --white: #ffffff;
  --paper: #f5f8ff;
  --blue: #2d6cdf;
  --blue-deep: #1c4eb0;
  --blue-soft: #e8f0ff;
  --ink: #12203a;
  --ink-soft: #5d6b83;
  --line: #e2e9f5;
  --shell: 1140px;
  --header-height: 68px;
}

* { 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(--white);
  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(--blue); outline-offset: 3px; }
.page-shell { width: min(calc(100% - 44px), var(--shell)); margin: 0 auto; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue-deep);
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 1.4px;
  line-height: 1.5;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(12px);
}
.nav-shell {
  display: flex;
  align-items: center;
  gap: 18px;
  width: min(calc(100% - 44px), var(--shell));
  min-height: var(--header-height);
  margin: 0 auto;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 9px; font-size: 20px; font-weight: 900; letter-spacing: -.4px; }
.brand img { width: 34px; height: 34px; border-radius: 9px; object-fit: contain; background: var(--white); box-shadow: 0 2px 10px rgba(45, 108, 223, .2); }
.brand-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: var(--blue);
  color: #fff;
  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, 1.7vw, 22px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 6px 0; color: #64738c; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { color: var(--blue); }
.nav-actions { display: flex; align-items: center; flex: none; gap: 9px; }
.nav-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  gap: 7px;
  padding: 0 16px;
  border-radius: 10px;
  background: var(--blue);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  box-shadow: 0 8px 18px rgba(45, 108, 223, .26);
  transition: background .18s ease, transform .18s ease;
}
.nav-download:hover { background: var(--blue-deep); transform: translateY(-1px); }
.nav-download svg, .button svg { width: 17px; height: 17px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 10px; 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: centered headline + four orbiting role circles */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(600px 380px at 50% -12%, rgba(45, 108, 223, .16), transparent 70%),
    linear-gradient(180deg, #f2f6ff 0%, #ffffff 72%);
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(to right, rgba(45, 108, 223, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(45, 108, 223, .05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 20%, #000, transparent 74%);
  pointer-events: none;
}
.hero-center {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 54px 0 8px;
  text-align: center;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  color: #6b7c96;
  font-size: 11.5px;
  letter-spacing: 1.2px;
}
.hero-kicker b {
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--blue);
  color: #fff;
  font-size: 10.5px;
  font-weight: 800;
  letter-spacing: 1px;
}
.hero h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(50px, 7.6vw, 88px);
  font-weight: 900;
  letter-spacing: clamp(-2.6px, -.4vw, -4px);
  line-height: 1;
}
.hero-subtitle {
  margin: 16px 0 0;
  color: var(--blue);
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 800;
  line-height: 1.45;
}
.hero-lead { max-width: 560px; margin: 11px 0 0; color: var(--ink-soft); 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: 48px;
  gap: 12px;
  padding: 0 26px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease;
}
.button-primary { background: var(--blue); color: #fff; box-shadow: 0 12px 26px rgba(45, 108, 223, .26); }
.button-primary:hover { background: var(--blue-deep); transform: translateY(-2px); }
.button-large { min-height: 52px; padding: 0 32px; font-size: 15px; }
.text-link { color: #5d6b83; border-bottom: 1px dashed #b9c9e4; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 4px; color: var(--blue); }

.orb-stage {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  width: min(100%, 430px);
  padding: 14px 74px 0;
  margin: 0 auto;
}
.hero-phone { position: relative; width: min(100%, 236px); }
.hero-phone img {
  width: 100%;
  height: auto;
  aspect-ratio: 432 / 768;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 24px 44px rgba(18, 32, 58, .16);
}
.orb {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border: 2px solid #fff;
  border-radius: 50%;
  color: #fff;
  font-size: 12.5px;
  font-weight: 900;
  letter-spacing: .5px;
  box-shadow: 0 12px 24px rgba(18, 32, 58, .16);
}
.orb-a { top: 8px; left: 0; background: linear-gradient(140deg, #4d8bff, #2058c0); }
.orb-b { top: 74px; right: 0; background: linear-gradient(140deg, #7aa8ff, #2d6cdf); }
.orb-c { bottom: 74px; left: 0; background: linear-gradient(140deg, #8fb8ff, #3f74d8); }
.orb-d { bottom: 8px; right: 0; background: linear-gradient(140deg, #5f96ff, #1c4eb0); }

.persona-tags {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  padding: 26px 0 42px;
  margin: 0;
  list-style: none;
}
.persona-tags li {
  padding: 6px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #5d6b83;
  font-size: 12px;
  font-weight: 700;
}
.persona-tags li::before { margin-right: 4px; color: var(--blue); content: "#"; }

/* features: two-column rows */
.features { padding: 68px 0 72px; background: var(--white); }
.section-heading { margin-bottom: 28px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(24px, 2.7vw, 33px); font-weight: 900; letter-spacing: -.7px; line-height: 1.32; }
.section-heading > p:last-child { max-width: 620px; margin: 10px 0 0; color: var(--ink-soft); font-size: 14px; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.feature-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 4px 14px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--paper);
}
.feature-no {
  grid-row: span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 12px;
  font-weight: 900;
}
.feature-card h3 { margin: 0; font-size: 16.5px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.8; }

/* shots: 2x2 big frames */
.shots { padding: 68px 0 74px; border-top: 1px solid var(--line); background: var(--paper); }
.shot-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.shot-card {
  padding: 14px 14px 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}
.shot-card img { width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; object-position: top center; border-radius: 10px; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 8px; padding: 11px 2px 13px; }
.shot-card figcaption b { color: var(--blue); font-size: 11px; font-weight: 900; }
.shot-card figcaption span { display: flex; flex-direction: column; font-size: 14px; font-weight: 800; line-height: 1.45; }
.shot-card figcaption small { color: var(--ink-soft); font-size: 11.5px; font-weight: 500; }

/* faq */
.faq { padding: 70px 0 76px; background: #fff; }
.faq-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(24px, 4vw, 50px); }
.faq-heading { position: sticky; top: calc(var(--header-height) + 24px); 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: 14px;
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 15px; font-weight: 900; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border-radius: 4px; background: var(--blue-soft); }
.faq-list summary i::before,
.faq-list summary i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 1.5px;
  content: "";
  background: var(--blue-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 26px 15px 2px; margin: 0; color: var(--ink-soft); font-size: 13.5px; line-height: 1.85; }

/* reviews: three columns */
.reviews { padding: 68px 0 74px; border-top: 1px solid var(--line); background: var(--paper); }
.review-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 0; list-style: none; }
.review-card { padding: 17px 17px 16px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 4px; padding-bottom: 8px; margin-bottom: 8px; border-bottom: 1px solid var(--line); }
.review-meta b { color: var(--blue-deep); font-size: 13px; font-weight: 900; }
.review-meta time { color: #93a1b8; font-size: 10.5px; }
.review-card p { margin: 0; color: #4f5d76; font-size: 13px; line-height: 1.8; }

/* steps: vertical rail */
.steps { padding: 66px 0 72px; background: #fff; }
.step-list { display: grid; gap: 0; padding: 0; margin: 0; list-style: none; }
.step-list li {
  position: relative;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  align-items: start;
  gap: 14px;
  padding: 14px 0 14px 0;
  border-top: 1px solid var(--line);
}
.step-list li:last-child { border-bottom: 1px solid var(--line); }
.step-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--blue);
  border-radius: 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}
.step-list h3 { margin: 0 0 3px; font-size: 16px; font-weight: 900; }
.step-list p { margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.8; }

/* download */
.download { padding: 24px 0; background: var(--paper); }
.download-inner {
  padding: 46px clamp(22px, 5vw, 56px) 40px;
  border-radius: 16px;
  background:
    radial-gradient(340px 220px at 90% -10%, rgba(255, 255, 255, .3), transparent 70%),
    linear-gradient(120deg, #2d6cdf, #1c4eb0);
  color: #fff;
}
.download .eyebrow { border-color: rgba(255, 255, 255, .32); background: rgba(255, 255, 255, .14); color: #fff; }
.download h2 { max-width: 620px; color: #fff; }
.download-inner > p { max-width: 520px; margin: 11px 0 22px; color: #dbe6ff; font-size: 14px; }
.download .button-primary { background: #fff; color: var(--blue-deep); box-shadow: 0 12px 24px rgba(10, 34, 80, .24); }
.download .button-primary:hover { background: #eef4ff; }
.download-notes { display: flex; flex-wrap: wrap; gap: 7px 20px; padding: 18px 0 0; margin: 24px 0 0; border-top: 1px solid rgba(255, 255, 255, .28); list-style: none; }
.download-notes li { color: #dbe6ff; font-size: 11.5px; }
.download-notes li::before { margin-right: 7px; content: "·"; }

/* 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: 3px 0 0; color: var(--ink-soft); font-size: 12px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 7px 20px; }
.footer-nav a { color: #64738c; font-size: 12px; }
.footer-nav a:hover { color: var(--blue); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 7px 18px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); color: #93a1b8; font-size: 12px; }
.footer-meta p { margin: 0; }
.footer-meta a { color: #93a1b8; }
.disclaimer { grid-column: 1 / -1; margin: 0; color: #93a1b8; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .review-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .orb-stage { padding: 14px 66px 0; }
}
@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: #fff;
    box-shadow: 0 14px 24px rgba(18, 32, 58, .1);
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav a { padding: 11px 0; border-bottom: 1px solid var(--line); }
  .hero-center { padding: 40px 0 6px; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
}
@media (max-width: 640px) {
  .page-shell, .nav-shell { width: calc(100% - 30px); }
  .hero h1 { font-size: clamp(44px, 14vw, 60px); }
  .hero-lead { font-size: 14px; }
  .orb-stage { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; padding: 16px 0 0; }
  .hero-phone { flex: 0 0 100%; display: flex; justify-content: center; width: 100%; }
  .hero-phone img { width: min(100%, 208px); }
  .orb { position: static; width: 62px; height: 62px; font-size: 12px; }
  .persona-tags { padding: 20px 0 34px; gap: 7px; }
  .feature-grid { grid-template-columns: 1fr; }
  .shot-grid { grid-template-columns: 1fr; }
  .review-list { grid-template-columns: 1fr; }
  .step-list li { grid-template-columns: 52px minmax(0, 1fr); gap: 10px; }
  .step-list span { width: 38px; height: 38px; font-size: 12px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .brand { font-size: 16px; gap: 6px; }
  .brand img { width: 28px; height: 28px; }
  .brand-tag { display: none; }
  .nav-actions { gap: 7px; }
  .nav-download { min-height: 33px; padding: 0 9px; font-size: 10.5px; gap: 4px; }
  .nav-download svg { width: 13px; height: 13px; }
  .menu-toggle { width: 33px; height: 33px; }
  .button { width: 100%; }
  .orb { width: 56px; height: 56px; font-size: 11px; }
}