@charset "UTF-8";

:root {
  --bg: #150f24;
  --bg-2: #191330;
  --panel: #211a3a;
  --panel-2: #271f45;
  --line: #392d5e;
  --ink: #f2ecff;
  --muted: #a79ec4;
  --purple: #7b5cff;
  --pink: #ff8fb1;
  --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(--pink); 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(--pink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.2px;
  line-height: 1.4;
}
.eyebrow::before { width: 16px; height: 2px; content: ""; background: linear-gradient(90deg, var(--purple), var(--pink)); }

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  border-bottom: 1px solid var(--line);
  background: rgba(21, 15, 36, .94);
  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: 18px;
}
.brand { display: inline-flex; align-items: center; flex: none; gap: 9px; font-size: 21px; font-weight: 900; letter-spacing: .2px; }
.brand img { width: 34px; height: 34px; border: 1px solid #463a70; border-radius: 50%; object-fit: contain; background: #1a1430; }
.brand-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--pink); box-shadow: 0 0 10px var(--pink); }
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 1.9vw, 24px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 7px 0; border-bottom: 2px solid transparent; color: #b3a9d0; 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: 40px;
  padding: 0 17px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--purple), var(--pink));
  color: #1a1030;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
  transition: filter .18s ease, transform .18s ease;
}
.nav-download:hover { filter: brightness(1.08); transform: translateY(-1px); }
.menu-toggle { display: none; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: transparent; 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: avatar rail + copy + chat window */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(600px 360px at 78% -4%, rgba(123, 92, 255, .28), transparent 70%),
    radial-gradient(420px 300px at 6% 92%, rgba(255, 143, 177, .1), transparent 72%),
    linear-gradient(180deg, #1b1330 0%, var(--bg) 100%);
}
.hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image: radial-gradient(rgba(255, 255, 255, .12) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(180deg, #000, transparent 84%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) minmax(0, 396px);
  align-items: center;
  gap: clamp(20px, 2.6vw, 38px);
  padding: 54px 0 58px;
}
.cast-rail { min-width: 0; }
.rail-label {
  margin: 0 0 12px;
  color: #8e82b4;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.4px;
  text-align: center;
}
.cast-rail ul { display: flex; flex-direction: column; gap: 10px; padding: 0; margin: 0; list-style: none; }
.cast-rail li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 8px 2px 7px;
  border: 1px solid transparent;
  border-radius: 12px;
}
.cast-rail li.is-on { border-color: #4a3a78; background: rgba(123, 92, 255, .14); }
.ava {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: #fff;
  font-size: 15px;
  font-weight: 900;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .18);
}
.ava-1 { background: linear-gradient(140deg, #7b5cff, #4a2fb0); }
.ava-2 { background: linear-gradient(140deg, #ff8fb1, #b2417a); }
.ava-3 { background: linear-gradient(140deg, #6f8dff, #35327a); }
.ava-4 { background: linear-gradient(140deg, #c48bff, #6d3fa8); }
.ava-txt { display: flex; flex-direction: column; align-items: center; gap: 1px; text-align: center; }
.ava-txt b { font-size: 11.5px; font-weight: 800; line-height: 1.3; }
.ava-txt small { color: #8b80ab; font-size: 9px; line-height: 1.3; }

.hero-copy { min-width: 0; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 16px;
  color: #b0a5cf;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.4px;
}
.hero-kicker b { padding: 2px 8px; border-radius: 999px; background: rgba(255, 143, 177, .16); color: var(--pink); font-size: 9.5px; letter-spacing: 1.2px; }
.hero h1 {
  margin: 0;
  font-size: clamp(52px, 7.6vw, 96px);
  font-weight: 900;
  letter-spacing: clamp(-2px, -.5vw, -4px);
  line-height: .98;
  background: linear-gradient(120deg, #ffffff 20%, #ffd7e4 62%, #b9a6ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-subtitle { margin: 16px 0 0; color: var(--pink); font-size: clamp(18px, 2vw, 24px); font-weight: 800; line-height: 1.4; }
.hero-lead { max-width: 430px; margin: 12px 0 0; color: var(--muted); font-size: 14px; }
.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: 48px;
  gap: 12px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 900;
  transition: transform .18s ease, filter .18s ease;
}
.button-primary { background: linear-gradient(120deg, var(--purple), var(--pink)); color: #1a1030; box-shadow: 0 14px 30px rgba(123, 92, 255, .28); }
.button-primary:hover { filter: brightness(1.08); transform: translateY(-2px); }
.button-large { min-height: 52px; padding: 0 32px; font-size: 15px; }
.button svg { width: 18px; height: 18px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.text-link { color: #c5bade; border-bottom: 1px dashed #4f4277; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--pink); }

.chat-pane {
  position: relative;
  overflow: hidden;
  border: 1px solid #453768;
  border-radius: 18px;
  background: linear-gradient(180deg, #241c40, #1b1530 62%);
  box-shadow: 0 24px 50px rgba(8, 4, 20, .55);
}
.chat-cover { position: relative; margin: 0; }
.chat-cover img { width: 100%; height: auto; aspect-ratio: 2.6 / 1; object-fit: cover; object-position: center 8%; }
.chat-cover::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, rgba(36, 28, 64, 0) 34%, rgba(27, 21, 48, .96));
}
.chat-head { display: flex; align-items: center; gap: 10px; padding: 0 16px 10px; margin-top: -26px; position: relative; z-index: 2; }
.chat-ava {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex: none;
  border-radius: 50%;
  background: linear-gradient(140deg, #7b5cff, #4a2fb0);
  box-shadow: 0 0 0 3px #241c40;
  font-size: 14px;
  font-weight: 900;
}
.chat-name { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.chat-name b { font-size: 14px; font-weight: 900; }
.chat-name small { color: #9b8fbd; font-size: 10px; }
.chat-live { margin-left: auto; padding: 2px 9px; border-radius: 999px; background: rgba(255, 143, 177, .16); color: var(--pink); font-size: 9.5px; }
.chat-body { display: flex; flex-direction: column; gap: 9px; padding: 0 16px 14px; }
.bubble { max-width: 88%; margin: 0; padding: 9px 12px; font-size: 12.5px; line-height: 1.6; }
.bubble-in { align-self: flex-start; border-radius: 3px 13px 13px 13px; background: #2c2349; color: #ddd3f4; }
.bubble-out { align-self: flex-end; border-radius: 13px 3px 13px 13px; background: linear-gradient(120deg, #6a4ce0, #a85690); color: #fff; }
.chat-input {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-top: 1px solid #382c5c;
  background: #1e1735;
}
.input-ghost { flex: 1; min-width: 0; padding: 7px 12px; border: 1px solid #3b2f60; border-radius: 999px; color: #7f739f; font-size: 11.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.input-send { flex: none; padding: 5px 14px; border-radius: 999px; background: rgba(255, 143, 177, .18); color: var(--pink); font-size: 11px; font-weight: 800; }

/* features */
.features { padding: 72px 0 78px; border-bottom: 1px solid var(--line); background: var(--bg-2); }
.section-heading { margin-bottom: 30px; }
.section-heading h2, .download h2 { margin: 0; font-size: clamp(24px, 2.7vw, 34px); font-weight: 900; letter-spacing: -.7px; line-height: 1.3; }
.section-heading > p:last-child { max-width: 620px; margin: 11px 0 0; color: var(--muted); font-size: 14px; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.feature-card {
  padding: 22px 22px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(150deg, rgba(123, 92, 255, .1), transparent 55%), var(--panel);
}
.feature-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 12px;
  border-radius: 10px;
  background: rgba(255, 143, 177, .14);
  color: var(--pink);
  font-size: 15px;
}
.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: 1.8; }

/* shots: three portrait screens */
.shots { padding: 74px 0 80px; }
.shot-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; align-items: start; }
.shot-card { display: flex; flex-direction: column; margin: 0; padding: 8px 8px 0; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); overflow: hidden; }
.shot-card img { width: 100%; height: auto; aspect-ratio: 450 / 926; object-fit: cover; object-position: center top; border-radius: 9px; background: #171028; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 9px; padding: 11px 4px 12px; margin-top: 8px; border-top: 1px solid var(--line); }
.shot-card figcaption b { flex: none; padding: 1px 8px; border-radius: 999px; background: rgba(255, 143, 177, .16); color: var(--pink); font-size: 10px; font-weight: 900; }
.shot-card figcaption span { color: #bdb2d6; font-size: 12px; line-height: 1.6; }

/* faq */
.faq { padding: 70px 0 76px; border-top: 1px solid var(--line); background: var(--bg-2); }
.faq-layout { display: grid; grid-template-columns: minmax(0, .76fr) minmax(0, 1.24fr); gap: clamp(26px, 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: 17px 0; 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: 1px solid #4b3d72; 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(--pink); 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 17px 0; margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.85; }

/* reviews */
.reviews { padding: 72px 0 78px; }
.review-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 0; list-style: none; }
.review-card { padding: 17px 18px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.review-top { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 6px; padding-bottom: 8px; margin-bottom: 8px; border-bottom: 1px dashed #3c3063; }
.review-top b { color: #ffc4d6; font-size: 13px; font-weight: 900; }
.review-top time { color: #7f739f; font-family: var(--mono); font-size: 10px; }
.review-card p { margin: 0; color: #c2b8da; font-size: 13px; line-height: 1.8; }

/* steps: vertical timeline */
.steps { padding: 68px 0 74px; border-top: 1px solid var(--line); background: var(--bg-2); }
.step-list { position: relative; display: flex; flex-direction: column; gap: 0; padding: 0; margin: 0; list-style: none; }
.step-list::before { position: absolute; top: 18px; bottom: 18px; left: 21px; width: 1px; content: ""; background: linear-gradient(180deg, #6b52c8, #3a2d60); }
.step-list li { position: relative; display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 16px; padding: 0 0 22px; }
.step-list li:last-child { padding-bottom: 0; }
.step-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid #5b478f;
  border-radius: 50%;
  background: #251d40;
  color: var(--pink);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
}
.step-list div { padding: 3px 0 0; }
.step-list h3 { margin: 0 0 4px; font-size: 16px; font-weight: 900; }
.step-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

/* download: centred */
.download { padding: 30px 0; }
.download-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 44px clamp(22px, 4vw, 48px);
  border: 1px solid #4a3a75;
  border-radius: 18px;
  background:
    radial-gradient(420px 220px at 50% 0%, rgba(255, 143, 177, .18), transparent 72%),
    linear-gradient(160deg, #2a2050, #1d1735 76%);
  text-align: center;
}
.download .eyebrow { justify-content: center; }
.download h2 { color: #fdf9ff; }
.download-inner > p:not(.eyebrow) { max-width: 470px; margin: 12px 0 24px; color: #b4a8ce; font-size: 13.5px; }
.download-notes { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 20px; padding: 20px 0 0; margin: 26px 0 0; border-top: 1px solid #3d3166; list-style: none; }
.download-notes li { color: #9c90bb; font-family: var(--mono); font-size: 10.5px; }
.download-notes li::before { margin-right: 6px; color: var(--pink); content: "·"; }

/* footer */
.site-footer { padding: 42px 0 50px; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 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 20px; }
.footer-nav a { color: #b7acd2; 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: 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: #7f7399; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 84px minmax(0, 1fr) minmax(0, 350px); }
}
@media (max-width: 940px) {
  .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, .55);
  }
  .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: minmax(0, 1fr); gap: 26px; padding: 40px 0 46px; }
  .cast-rail { order: 2; }
  .rail-label { text-align: left; }
  .cast-rail ul { flex-direction: row; gap: 8px; }
  .cast-rail li { flex: 1; min-width: 0; }
  .hero-copy { order: 1; }
  .chat-pane { order: 3; width: min(100%, 430px); }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-heading { position: static; }
}
@media (max-width: 680px) {
  .page-shell, .nav-shell { width: calc(100% - 30px); }
  .hero h1 { font-size: clamp(44px, 14vw, 62px); }
  .feature-grid { grid-template-columns: 1fr; }
  .shot-grid { grid-template-columns: 1fr; }
  .shot-card img { aspect-ratio: 450 / 926; }
  .review-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .brand { font-size: 17px; gap: 7px; }
  .brand img { width: 28px; height: 28px; }
  .nav-actions { gap: 7px; }
  .nav-download { min-height: 33px; padding: 0 10px; font-size: 11px; }
  .menu-toggle { width: 33px; height: 33px; }
  .hero h1 { font-size: 44px; }
  .hero-subtitle { font-size: 16px; }
  .ava { width: 36px; height: 36px; font-size: 13px; }
  .ava-txt b { font-size: 10px; }
  .ava-txt small { display: none; }
  .button { width: 100%; }
}