@charset "UTF-8";

:root {
  --bg: #111420;
  --bg-2: #161a29;
  --panel: #1c2133;
  --line: #2c3349;
  --ink: #f2f4fb;
  --muted: #98a1ba;
  --pink: #ff5470;
  --banana: #ffd23f;
  --shell: 1180px;
  --header-height: 70px;
  --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(--banana); 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 14px;
  color: var(--banana);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.4px;
  line-height: 1.4;
}
.eyebrow::before { width: 7px; height: 7px; content: ""; background: var(--pink); }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(17, 20, 32, .93);
  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: 20px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 10px; font-size: 21px; font-weight: 900; letter-spacing: -.3px; }
.brand img { width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 50%; object-fit: contain; background: #f6f2e4; }
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 1.9vw, 25px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 7px 0; border-bottom: 2px solid transparent; color: #aab3cb; font-size: 13px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--pink); color: #fff; }
.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(--pink);
  border-radius: 21px;
  background: var(--pink);
  color: #2a0a10;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: background .18s ease, color .18s ease;
}
.nav-download:hover { background: transparent; color: var(--pink); }
.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: two tilted screens + tab strip */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(520px 420px at 78% 12%, rgba(255, 84, 112, .16), transparent 68%),
    radial-gradient(400px 280px at 4% 90%, rgba(255, 210, 63, .08), transparent 70%),
    linear-gradient(180deg, #151a2a, var(--bg));
}
.hero::after {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  content: "";
  background: linear-gradient(90deg, var(--pink), var(--banana) 62%, transparent);
}
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(300px, .98fr);
  align-items: center;
  gap: clamp(22px, 3.6vw, 52px);
  padding: 54px 0 22px;
}
.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 15px;
  color: #a8b2cb;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .6px;
}
.hero-kicker b {
  padding: 2px 7px;
  border-radius: 3px;
  background: var(--banana);
  color: #241d05;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .4px;
}
.hero h1 {
  margin: 0;
  font-size: clamp(48px, 6.6vw, 88px);
  font-weight: 900;
  letter-spacing: clamp(-2px, -.4vw, -4px);
  line-height: .98;
}
.hero-subtitle {
  margin: 16px 0 0;
  color: var(--pink);
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 800;
  line-height: 1.45;
}
.hero-lead { max-width: 545px; 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 27px;
  border: 1px solid transparent;
  border-radius: 26px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease, color .18s ease;
}
.button-primary { background: var(--pink); color: #2a0a10; box-shadow: 0 12px 26px rgba(255, 84, 112, .24); }
.button-primary:hover { background: #ff7088; transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 32px; font-size: 15px; }
.text-link { color: #c5cde1; border-bottom: 1px dashed #4b5474; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--banana); }

.phone-stack {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding-bottom: 10px;
}
.phone {
  margin: 0;
  padding: 7px 7px 4px;
  border: 1px solid #39415c;
  border-radius: 18px;
  background: #0c0f1a;
  box-shadow: 0 22px 40px rgba(0, 0, 0, .5);
}
.phone img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; object-position: top; border-radius: 12px; }
.phone figcaption { padding: 7px 4px 4px; color: #7f8aa7; font-family: var(--mono); font-size: 9px; letter-spacing: .4px; text-align: center; }
.phone figcaption b { color: var(--banana); font-weight: 700; }
.phone figcaption span { display: block; font-size: 8.5px; }
.phone-main { width: 61%; transform: rotate(-3.4deg); }
.phone-sub { width: 47%; margin-top: 24%; margin-left: -12%; transform: rotate(4.2deg); }
.stack-chip {
  position: absolute;
  top: 6%;
  left: 2%;
  z-index: 3;
  padding: 4px 10px;
  border-radius: 3px;
  background: var(--pink);
  color: #26080d;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  transform: rotate(-7deg);
  box-shadow: 0 8px 16px rgba(0, 0, 0, .35);
}

.tab-strip {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  padding: 0;
  margin: 0 0 40px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  list-style: none;
}
.tab-strip li {
  padding: 13px 4px;
  color: #8b95b0;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
}
.tab-strip li + li { border-left: 1px solid var(--line); }
.tab-strip .is-on { position: relative; color: #fff; }
.tab-strip .is-on::after { position: absolute; bottom: -1px; left: 26%; right: 26%; height: 2px; content: ""; background: var(--pink); }

/* features */
.features { padding: 76px 0 82px; background: var(--bg-2); border-bottom: 1px solid var(--line); }
.section-heading { margin-bottom: 32px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(25px, 2.9vw, 36px); font-weight: 900; letter-spacing: -.8px; line-height: 1.3; }
.section-heading > p:last-child { max-width: 620px; margin: 12px 0 0; color: var(--muted); font-size: 14px; }
.section-heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(210px, 300px); align-items: end; gap: 28px; }
.section-heading-split > p:last-child { margin: 0 0 5px; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.feature-card {
  padding: 24px 24px 22px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--pink);
  border-radius: 4px;
  background: linear-gradient(120deg, rgba(255, 84, 112, .06), transparent 55%), var(--panel);
}
.feature-no { display: block; margin-bottom: 10px; color: var(--banana); font-family: var(--mono); font-size: 11px; letter-spacing: 1.8px; }
.feature-card h3 { margin: 0 0 7px; font-size: 18px; font-weight: 900; }
.feature-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }

/* shots */
.shots { padding: 76px 0 84px; }
.shot-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; align-items: start; }
.shot-card { margin: 0; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); overflow: hidden; }
.shot-card img { width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; object-position: top; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 9px; padding: 11px 12px 12px; border-top: 1px solid var(--line); }
.shot-card figcaption b { color: var(--pink); 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: 74px 0 80px; border-top: 1px solid var(--line); background: var(--bg-2); }
.faq-layout { display: grid; grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr); gap: clamp(26px, 4vw, 56px); }
.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: 17px 0;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { margin: 0; font-size: 15.5px; font-weight: 900; }
.faq-list summary i { position: relative; flex: none; width: 24px; height: 16px; }
.faq-list summary i::before,
.faq-list summary i::after { position: absolute; left: 50%; width: 10px; height: 1.5px; content: ""; background: var(--banana); transform: translateX(-50%); }
.faq-list summary i::before { top: 6px; }
.faq-list summary i::after { top: 6px; transform: translateX(-50%) rotate(90deg); transition: transform .2s ease; }
.faq-list details[open] summary i::after { transform: translateX(-50%) rotate(0); }
.faq-list details p { padding: 0 30px 17px 0; margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.85; }

/* reviews */
.reviews { padding: 76px 0 84px; }
.review-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 0; list-style: none; }
.review-card { padding: 18px 20px 19px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); }
.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 dashed var(--line); }
.review-meta b { color: var(--pink); font-size: 13px; font-weight: 900; }
.review-meta time { color: #7b86a2; font-family: var(--mono); font-size: 10px; }
.review-card p { margin: 0; color: #bcc4d8; font-size: 13px; line-height: 1.8; }

/* steps */
.steps { padding: 72px 0 78px; 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: 22px 20px 20px; border: 1px solid var(--line); border-radius: 4px; background: var(--panel); }
.step-list span { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; margin-bottom: 12px; border-radius: 50%; background: var(--banana); color: #241d05; font-family: var(--mono); font-size: 11px; font-weight: 700; }
.step-list h3 { margin: 0 0 7px; font-size: 17px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* download */
.download { padding: 26px 0; }
.download-inner {
  padding: 50px clamp(24px, 5vw, 58px) 44px;
  border: 1px solid #3a2b3f;
  border-radius: 10px;
  background:
    radial-gradient(460px 260px at 92% 0%, rgba(255, 84, 112, .34), transparent 68%),
    linear-gradient(120deg, #221626, #171322 60%, #241723);
  color: #f7eef4;
}
.download .eyebrow { color: var(--banana); }
.download h2 { max-width: 600px; color: #fff5f8; }
.download-inner > p { max-width: 520px; margin: 12px 0 22px; color: #c0aebb; font-size: 14px; }
.download .button-primary { background: var(--banana); color: #241d05; box-shadow: 0 14px 26px rgba(0, 0, 0, .3); }
.download .button-primary:hover { background: #ffe066; }
.download-notes { display: flex; flex-wrap: wrap; gap: 8px 22px; padding: 20px 0 0; margin: 26px 0 0; border-top: 1px solid rgba(247, 238, 244, .18); list-style: none; }
.download-notes li { color: #b6a3b2; font-family: var(--mono); font-size: 11px; }
.download-notes li::before { margin-right: 7px; color: var(--pink); content: "/"; }

/* footer */
.site-footer { padding: 44px 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: #b0b9cf; font-size: 12px; }
.footer-nav a:hover { color: var(--pink); }
.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: #7d88a4; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr) 310px; }
  .phone-main { width: 64%; }
  .phone-sub { width: 49%; }
}
@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: var(--bg);
    box-shadow: 0 16px 26px rgba(0, 0, 0, .5);
  }
  .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: 44px 0 12px; }
  .phone-stack { justify-content: center; max-width: 420px; margin: 14px auto 0; }
  .stack-chip { left: 6%; }
  .tab-strip { margin-bottom: 32px; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
  .step-list { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .hero h1 { font-size: clamp(44px, 13.6vw, 58px); }
  .hero-lead { font-size: 14px; }
  .feature-grid { grid-template-columns: 1fr; }
  .shot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .review-list { grid-template-columns: 1fr; }
  .section-heading-split { grid-template-columns: 1fr; gap: 10px; }
  .section-heading-split > p:last-child { margin: 0; }
  .download-notes li { font-size: 10.5px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .brand { font-size: 17px; gap: 7px; }
  .brand img { width: 30px; height: 30px; }
  .nav-actions { gap: 8px; }
  .nav-download { min-height: 34px; padding: 0 10px; font-size: 11px; gap: 5px; }
  .nav-download svg { width: 14px; height: 14px; }
  .menu-toggle { width: 34px; height: 34px; }
  .hero h1 { font-size: 46px; }
  .hero-subtitle { font-size: 16px; }
  .button { width: 100%; }
  .phone-main { width: 64%; }
  .phone-sub { width: 46%; margin-top: 22%; }
  .tab-strip li { padding: 11px 2px; font-size: 12.5px; }
}