@charset "UTF-8";

:root {
  --lilac: #F8F4FD;
  --lilac-2: #F0E9F9;
  --white: #FFFFFF;
  --ink: #3A2F4A;
  --muted: #7C6F8F;
  --purple: #A78BDB;
  --purple-deep: #7C5FB5;
  --blue: #2F7BD6;
  --line: #E2D8F0;
  --shell: 1160px;
  --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(--lilac);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  overflow-wrap: anywhere;
}
img { display: block; max-width: 100%; height: auto; }
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(--purple-deep); outline-offset: 4px; }
.page-shell { width: min(calc(100% - 48px), var(--shell)); margin: 0 auto; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin: 0 0 14px; color: var(--purple-deep); 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: var(--purple); }

/* header */
.site-header { position: sticky; top: 0; z-index: 60; border-bottom: 1px solid var(--line); background: rgba(248, 244, 253, .96); 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: 20px; }
.brand { display: inline-flex; align-items: center; flex: none; gap: 10px; font-size: 19px; font-weight: 900; }
.brand img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; background: #fff; }
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: clamp(12px, 1.7vw, 22px); padding: 0; margin: 0; list-style: none; }
.primary-nav a { display: block; padding: 6px 0; border-bottom: 2px solid transparent; color: #6E6083; font-size: 12.5px; font-weight: 700; }
.primary-nav a:hover { border-bottom-color: var(--purple); 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: 40px; gap: 7px; padding: 0 15px; border-radius: 20px; background: var(--blue); color: #fff; font-size: 12.5px; font-weight: 900; white-space: nowrap; transition: background .18s ease; }
.nav-download:hover { background: #1F5FA8; }
.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: 12px; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; width: 17px; height: 2px; margin: 4.5px auto; background: var(--ink); transition: transform .18s ease; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3px) rotate(-45deg); }

/* hero */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); background:
  radial-gradient(420px 300px at 88% 10%, rgba(167, 139, 219, .22), transparent 70%),
  linear-gradient(180deg, #FBF8FF, var(--lilac) 76%); }
.hero::before { position: absolute; top: 60px; left: -40px; width: 180px; height: 180px; border-radius: 50%; content: ""; background: rgba(47, 123, 214, .07); }
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr); align-items: center; gap: clamp(26px, 4.4vw, 58px); padding: 56px 0 60px; }
.hero-copy { min-width: 0; }
.hero-kicker { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 16px; color: var(--muted); font-family: var(--mono); font-size: 10.5px; letter-spacing: 1.6px; }
.hero-kicker b { padding: 2px 8px; border-radius: 10px; background: var(--purple); color: #fff; font-size: 9.5px; font-weight: 900; letter-spacing: 1.2px; }
.hero h1 { margin: 0; font-size: clamp(48px, 7vw, 88px); font-weight: 900; letter-spacing: clamp(-1px, -.3vw, -3px); line-height: 1; }
.hero-subtitle { margin: 16px 0 0; color: var(--purple-deep); font-size: clamp(17px, 2vw, 23px); font-weight: 800; line-height: 1.45; }
.hero-lead { max-width: 520px; margin: 14px 0 0; color: var(--muted); font-size: 14.5px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 18px; margin-top: 26px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; gap: 13px; padding: 0 27px; border-radius: 25px; font-size: 14px; font-weight: 900; transition: transform .18s ease, background .18s ease; }
.button-primary { background: var(--blue); color: #fff; box-shadow: 0 12px 24px rgba(47, 123, 214, .24); }
.button-primary:hover { background: #1F5FA8; transform: translateY(-2px); }
.button-large { min-height: 54px; padding: 0 34px; font-size: 15px; }
.text-link { color: var(--purple-deep); border-bottom: 1px dashed #C3B2DF; font-size: 13px; font-weight: 800; }
.text-link span { display: inline-block; margin-left: 5px; color: var(--blue); }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 30px 0 0; list-style: none; }
.hero-tags li { padding: 5px 15px; border: 1px solid var(--line); border-radius: 15px; background: #fff; color: #6E6083; font-size: 12px; font-weight: 700; }
.hero-tags li:first-child { border-color: var(--purple); background: var(--purple); color: #fff; }

.login-card { position: relative; min-width: 0; padding: 26px 24px 22px; border: 1px solid var(--line); border-radius: 22px; background: #fff; box-shadow: 0 22px 40px rgba(88, 62, 128, .14); }
.login-pin { position: absolute; top: -12px; left: 50%; width: 62px; height: 22px; border-radius: 4px; background: repeating-linear-gradient(45deg, #D9C8F2 0 6px, #E9DEF8 6px 12px); transform: translateX(-50%) rotate(-2deg); }
.login-head { margin: 6px 0 0; font-size: 21px; font-weight: 900; text-align: center; }
.login-sub { margin: 4px 0 16px; color: var(--muted); font-size: 11.5px; text-align: center; }
.field { display: flex; align-items: center; gap: 9px; padding: 11px 14px; margin-bottom: 9px; border: 1px solid var(--line); border-radius: 10px; background: #F6F1FC; color: #8A7C9C; font-size: 12.5px; }
.field span { color: var(--purple); font-size: 12px; }
.field b { font-weight: 500; }
.login-btn { margin: 14px 0 0; padding: 11px 0; border-radius: 21px; background: var(--blue); color: #fff; font-size: 13.5px; font-weight: 900; text-align: center; }
.login-help { display: flex; justify-content: space-between; margin: 10px 2px 0; color: var(--purple-deep); font-size: 11.5px; }
.login-tip { padding: 10px 0 0; margin: 12px 0 0; border-top: 1px dashed var(--line); color: #9C8EAE; font-size: 10.5px; line-height: 1.7; }

/* features */
.features { padding: 68px 0 72px; border-bottom: 1px solid var(--line); background: var(--lilac-2); }
.section-heading { margin-bottom: 28px; }
.section-heading h2 { margin: 0; font-size: clamp(23px, 2.5vw, 32px); font-weight: 900; letter-spacing: -.4px; line-height: 1.35; }
.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(200px, 300px); align-items: end; gap: 24px; }
.section-heading-split > p:last-child { margin: 0 0 4px; }
.section-heading-center { text-align: center; }
.section-heading-center .eyebrow { justify-content: center; }
.feature-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.feature-item { display: grid; grid-template-columns: 48px minmax(0, 1fr); align-items: start; gap: 14px; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: #fff; min-width: 0; }
.feature-icon { display: inline-flex; align-items: center; justify-content: center; width: 46px; height: 46px; border-radius: 50% 50% 50% 12px; background: var(--lilac-2); color: var(--purple-deep); font-family: var(--mono); font-size: 12px; font-weight: 700; }
.feature-item h3 { margin: 2px 0 5px; font-size: 16px; font-weight: 900; }
.feature-item p { margin: 0; color: var(--muted); font-size: 12.8px; line-height: 1.75; }

/* shots: 2x2 pastel frames */
.shots { padding: 68px 0 78px; }
.shot-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.shot-card { position: relative; margin: 0; padding: 8px; border: 1px solid var(--line); border-radius: 18px; background: #fff; }
.shot-card img { width: 100%; height: auto; aspect-ratio: 4 / 5; object-fit: cover; object-position: center top; border-radius: 12px; }
.shot-card:nth-child(2) img { object-position: center 40%; }
.shot-card figcaption { display: flex; align-items: baseline; gap: 8px; padding: 10px 6px 4px; }
.shot-card figcaption b { color: var(--purple-deep); font-family: var(--mono); font-size: 10px; }
.shot-card figcaption span { display: flex; flex-direction: column; font-size: 13px; font-weight: 900; line-height: 1.4; min-width: 0; }
.shot-card figcaption small { color: var(--muted); font-size: 10.5px; font-weight: 500; }

/* faq */
.faq { padding: 68px 0 76px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--lilac-2); }
.faq-list { display: grid; gap: 10px; max-width: 900px; margin: 0 auto; }
.faq-list details { border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 15px 18px; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary h3 { display: flex; align-items: center; gap: 10px; margin: 0; font-size: 14.5px; font-weight: 900; }
.faq-list summary h3::before { display: inline-flex; align-items: center; justify-content: center; flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--lilac-2); color: var(--purple-deep); content: "Q"; font-family: var(--mono); font-size: 10px; }
.faq-list summary i { position: relative; flex: none; width: 20px; height: 20px; border-radius: 50%; background: var(--lilac-2); }
.faq-list summary i::before, .faq-list summary i::after { position: absolute; top: 50%; left: 50%; width: 8px; height: 1.5px; content: ""; background: var(--purple-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 18px 16px 50px; margin: 0; color: var(--muted); font-size: 13.2px; line-height: 1.85; }

/* reviews: chat bubbles */
.reviews { padding: 68px 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: 14px 16px; border: 1px solid var(--line); border-radius: 16px 16px 16px 4px; background: #F4EEFB; min-width: 0; }
.review-card:nth-child(even) { border-radius: 16px 16px 4px 16px; background: #EAF3FD; }
.review-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 6px; }
.review-meta b { color: var(--purple-deep); font-size: 12.5px; font-weight: 900; }
.review-meta time { color: #A698B8; font-family: var(--mono); font-size: 9.5px; }
.review-card p { margin: 0; color: #5C5070; font-size: 12.8px; line-height: 1.8; }

/* steps */
.steps { padding: 66px 0 72px; border-top: 1px solid var(--line); background: var(--lilac-2); }
.step-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 0; margin: 24px 0 0; list-style: none; }
.step-list li { padding: 20px 18px; border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(160deg, #fff, #F7F2FD); min-width: 0; }
.step-list span { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; margin-bottom: 10px; border-radius: 50%; background: var(--purple); color: #fff; 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: 12.5px; }

/* download */
.download { padding: 24px 0 28px; }
.download-inner { position: relative; display: flex; flex-direction: column; align-items: center; overflow: hidden; padding: 44px clamp(22px, 5vw, 54px) 38px; border-radius: 24px; background: linear-gradient(135deg, #B9A3E4, #8F73C9 68%, #7C5FB5); color: #fff; text-align: center; }
.download-inner::before { position: absolute; top: -60px; right: -50px; width: 200px; height: 200px; border-radius: 50%; content: ""; background: rgba(255, 255, 255, .16); }
.download-inner::after { position: absolute; bottom: -80px; left: -40px; width: 210px; height: 210px; border-radius: 50%; content: ""; background: rgba(255, 255, 255, .1); }
.download .eyebrow { position: relative; z-index: 1; color: #F2EBFF; }
.download .eyebrow::before { background: #fff; }
.download h2 { position: relative; z-index: 1; max-width: 620px; margin: 0; font-size: clamp(23px, 2.5vw, 32px); font-weight: 900; letter-spacing: -.4px; line-height: 1.35; }
.download-inner > p { position: relative; z-index: 1; max-width: 520px; margin: 12px 0 22px; color: #F0E9FC; font-size: 14px; }
.download .button-primary { position: relative; z-index: 1; background: #fff; color: var(--purple-deep); box-shadow: 0 12px 24px rgba(64, 40, 100, .24); }
.download .button-primary:hover { background: #F6F1FC; }
.download-notes { position: relative; z-index: 1; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; padding: 16px 0 0; margin: 22px 0 0; border-top: 1px solid rgba(255, 255, 255, .34); list-style: none; }
.download-notes li { color: #F0E9FC; font-family: var(--mono); font-size: 10.5px; }
.download-notes li::before { margin-right: 7px; content: "·"; color: #fff; }

/* footer */
.site-footer { padding: 38px 0 46px; 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: 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 22px; }
.footer-nav a { color: #6E6083; font-size: 12px; }
.footer-nav a:hover { color: var(--purple-deep); }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; margin-top: 18px; padding-top: 14px; 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: #A698B8; font-size: 11.5px; line-height: 1.8; }

/* responsive */
@media (max-width: 1000px) {
  .hero h1 { font-size: clamp(42px, 5.8vw, 64px); }
}
@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .primary-nav { position: absolute; top: 100%; left: 0; right: 0; display: none; padding: 8px 24px 14px; border-bottom: 1px solid var(--line); background: var(--lilac); box-shadow: 0 16px 26px rgba(88, 62, 128, .14); }
  .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-grid { grid-template-columns: 1fr; padding: 40px 0 48px; }
  .hero-copy { order: 1; }
  .login-card { order: 2; max-width: 460px; }
  .step-list { grid-template-columns: 1fr; gap: 10px; }
}
@media (max-width: 768px) {
  .feature-list { grid-template-columns: 1fr; }
  .review-list { grid-template-columns: 1fr; }
  .section-heading-split { grid-template-columns: 1fr; gap: 10px; }
  .section-heading-split > p:last-child { margin: 0; }
  .faq-list details p { padding-left: 18px; }
}
@media (max-width: 560px) {
  .page-shell, .nav-shell { width: calc(100% - 32px); }
  .hero h1 { font-size: clamp(38px, 11vw, 54px); }
  .hero-lead { font-size: 14px; }
  .brand { font-size: 16px; gap: 7px; }
  .brand img { width: 32px; height: 32px; }
  .nav-actions { gap: 8px; }
  .nav-download { min-height: 34px; padding: 0 9px; font-size: 10.8px; gap: 4px; }
  .nav-download svg { width: 13px; height: 13px; }
  .menu-toggle { width: 34px; height: 34px; }
  .login-card { padding: 22px 18px 18px; }
  .shot-grid { gap: 12px; }
  .download-inner { padding: 36px 18px 30px; }
  .button { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
}