/* 17c responsive brand website */
:root {
  --bg: #F5F7FF;
  --ink: #1F2740;
  --title: #131A35;
  --muted: #66708A;
  --soft: #9AA4BA;
  --primary: #5B6CFF;
  --primary-2: #7A5CFF;
  --cyan: #00D4FF;
  --gold: #FFC857;
  --rose: #D94F70;
  --nav: rgba(12,18,40,.94);
  --deep: #11182F;
  --border: rgba(91,108,255,.18);
  --shadow: 0 20px 46px rgba(25,43,91,.14);
  --radius: 24px;
  --container: min(1220px, calc(100% - 40px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
  overflow-x: hidden;
}
body.drawer-open { overflow: hidden; }
a { color: inherit; }
img { max-width: 100%; height: auto; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
.container { width: var(--container); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 12000; padding: 10px 16px; border-radius: 10px; background: #fff; color: var(--title); box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 9999;
  background: var(--nav);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 26px rgba(25,43,91,.16);
}
.header-inner {
  width: min(1280px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-logo, .drawer-brand, .footer-logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 900; letter-spacing: .04em; }
.site-logo { color: #fff; font-size: 22px; flex: 0 0 auto; }
.site-logo img { max-height: 44px; width: auto; display: block; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 8px; margin-left: auto; }
.nav-core a { color: #EEF2FF; text-decoration: none; border-radius: 999px; padding: 8px 12px; white-space: nowrap; font-size: 15px; transition: .25s ease; }
.nav-core a:hover, .nav-core a.active { color: #fff; background: rgba(0,212,255,.16); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.main-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 22px; border: 0; border-radius: 999px; background: linear-gradient(135deg, #5B6CFF 0%, #7A5CFF 48%, #00D4FF 100%); color: #fff; text-decoration: none; font-weight: 800; box-shadow: 0 14px 32px rgba(91,108,255,.22); transition: transform .25s ease, box-shadow .25s ease; }
.main-btn:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(91,108,255,.3); }
.menu-toggle { width: 44px; height: 44px; border: 1px solid rgba(255,255,255,.18); border-radius: 14px; background: rgba(255,255,255,.08); color: #fff; cursor: pointer; display: grid; place-content: center; gap: 4px; }
.menu-toggle span { width: 18px; height: 2px; border-radius: 2px; background: currentColor; display: block; }
.menu-toggle-mobile { display: none; }
.drawer-overlay { position: fixed; inset: 0; z-index: 10000; background: rgba(6,10,24,.55); opacity: 0; transition: opacity .25s ease; }
.drawer-overlay.is-open { opacity: 1; }
.site-drawer { position: fixed; top: 0; right: 0; z-index: 10001; width: min(390px, 88vw); height: 100dvh; padding: 24px; background: #fff; box-shadow: -24px 0 60px rgba(12,18,40,.25); transform: translateX(105%); transition: transform .3s ease; overflow-y: auto; }
.site-drawer.is-open { transform: translateX(0); }
.drawer-head { display: flex; align-items: center; justify-content: space-between; }
.drawer-brand { color: var(--title); font-size: 22px; }
.drawer-brand img { width: 42px; max-height: 42px; object-fit: contain; }
.drawer-close { width: 42px; height: 42px; border: 0; border-radius: 50%; background: #EFF2FF; color: var(--title); font-size: 28px; cursor: pointer; }
.drawer-intro { color: var(--muted); margin: 18px 0; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.drawer-nav a { text-decoration: none; padding: 11px 13px; border: 1px solid var(--border); border-radius: 14px; color: var(--title); background: #FAFBFF; font-weight: 700; }
.drawer-nav a:hover { color: var(--primary); background: #EFF2FF; }
.drawer-note { margin-top: 18px; padding: 16px; border-radius: 18px; background: #EFF8FF; border: 1px solid rgba(0,212,255,.2); }
.drawer-note strong { color: var(--title); }
.drawer-note p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
main { display: block; }
.section { padding: 84px 0; }
.section-sm { padding: 54px 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 28px; }
.section-head > div { max-width: 760px; }
.section-kicker { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 8px; color: var(--primary); font-size: 14px; font-weight: 900; letter-spacing: .08em; }
.section-kicker::before { content: ""; width: 28px; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--primary), var(--cyan)); }
h1, h2, h3, .section-title { color: var(--title); line-height: 1.24; margin-top: 0; }
h1 { font-size: clamp(40px, 7vw, 78px); letter-spacing: -.04em; }
h2 { font-size: clamp(28px, 4vw, 44px); letter-spacing: -.025em; }
h3 { font-size: 21px; }
p { margin-top: 0; }
.lead { font-size: clamp(17px, 2vw, 20px); color: #4F5A76; }
.text-link { color: var(--primary); font-weight: 800; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.muted { color: var(--muted); }
.card, .zone-card, .info-card, .review-card { background: #fff; border: 1px solid var(--border); box-shadow: var(--shadow); border-radius: var(--radius); }
.card { padding: 26px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.hero { position: relative; isolation: isolate; overflow: hidden; padding: 74px 0 64px; background: radial-gradient(circle at 86% 18%, rgba(0,212,255,.23), transparent 28%), radial-gradient(circle at 12% 2%, rgba(122,92,255,.25), transparent 34%), linear-gradient(145deg, #EEF0FF 0%, #F9F5FF 48%, #EAFBFF 100%); }
.hero::before, .hero::after { content: ""; position: absolute; z-index: -1; border-radius: 50%; filter: blur(2px); }
.hero::before { width: 250px; height: 250px; left: -90px; bottom: -90px; background: rgba(255,200,87,.2); }
.hero::after { width: 180px; height: 180px; right: 32%; top: 14%; border: 36px solid rgba(217,79,112,.08); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(420px, .98fr); align-items: center; gap: 56px; }
.hero-copy .eyebrow { display: inline-flex; padding: 7px 13px; border-radius: 999px; background: rgba(91,108,255,.1); color: var(--primary); font-weight: 900; margin-bottom: 18px; }
.hero-copy h1 span { display: block; margin-top: 8px; font-size: .5em; letter-spacing: -.02em; color: var(--title); }
.hero-copy p { max-width: 690px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; margin: 26px 0; }
.secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 20px; border-radius: 999px; border: 1px solid var(--border); background: rgba(255,255,255,.75); color: var(--primary); text-decoration: none; font-weight: 800; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 20px 0 0; list-style: none; }
.hero-points li { padding: 8px 13px; border-radius: 999px; background: #fff; color: #35405D; box-shadow: 0 8px 22px rgba(25,43,91,.1); font-size: 14px; font-weight: 800; }
.hero-visual { position: relative; min-width: 0; }
.hero-visual .visual-shell { padding: 20px; border: 1px solid rgba(255,255,255,.85); border-radius: 34px; background: rgba(255,255,255,.68); box-shadow: 0 30px 70px rgba(39,51,103,.19); backdrop-filter: blur(16px); }
.hero-visual img { width: 100%; max-height: 600px; display: block; object-fit: contain; border-radius: 24px; }
.floating-card { position: absolute; padding: 13px 16px; border-radius: 17px; background: #fff; box-shadow: 0 18px 38px rgba(25,43,91,.17); color: var(--title); font-weight: 800; font-size: 14px; }
.floating-card.one { left: -28px; bottom: 14%; }
.floating-card.two { right: -16px; top: 12%; }
.highlight-strip { margin-top: -26px; position: relative; z-index: 2; }
.highlight-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; overflow: hidden; border-radius: 24px; background: var(--border); box-shadow: var(--shadow); }
.highlight-item { padding: 22px; background: #fff; }
.highlight-item strong { display: block; color: var(--title); font-size: 17px; }
.highlight-item p { margin: 7px 0 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.channel-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.channel-pill { flex: 1 1 210px; display: flex; flex-direction: column; min-height: 112px; padding: 17px 19px; border-radius: 20px; border: 1px solid var(--border); background: rgba(255,255,255,.8); text-decoration: none; transition: .25s ease; }
.channel-pill:hover { transform: translateY(-3px); background: #fff; box-shadow: 0 15px 32px rgba(25,43,91,.1); }
.channel-pill strong { color: var(--title); }
.channel-pill span { color: var(--muted); font-size: 14px; margin-top: 5px; }
.media-split { display: grid; grid-template-columns: .95fr 1.05fr; gap: 30px; align-items: center; }
.media-split.reverse { grid-template-columns: 1.05fr .95fr; }
.media-split.reverse .media-visual { order: 2; }
.media-visual { padding: 18px; border-radius: 30px; background: linear-gradient(145deg, #E9EEFF, #FCEEFF); border: 1px solid var(--border); }
.media-visual img, .content-img, .zone-card img, .app-section img { width: 100%; max-height: 540px; display: block; object-fit: contain; border-radius: 22px; }
.copy-panel { padding: 12px 4px; }
.copy-panel p { color: var(--muted); }
.feature-list { display: grid; gap: 12px; padding: 0; margin: 22px 0; list-style: none; }
.feature-list li { position: relative; padding-left: 30px; color: #3B4662; }
.feature-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 21px; height: 21px; display: grid; place-items: center; border-radius: 50%; background: #E8ECFF; color: var(--primary); font-size: 13px; font-weight: 900; }
.zone-card { overflow: hidden; }
.zone-card .zone-image { padding: 16px 16px 0; }
.zone-card .zone-body { padding: 22px; }
.zone-card p { color: var(--muted); }
.service-points { display: grid; gap: 10px; margin: 16px 0; }
.service-points span { padding: 9px 12px; border-radius: 12px; background: #F4F6FF; color: #46516C; font-size: 14px; }
.mini-banner-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 24px; }
.mini-banner-row img { width: 100%; max-height: 280px; object-fit: contain; display: block; padding: 14px; border-radius: 24px; background: #fff; border: 1px solid var(--border); box-shadow: 0 14px 30px rgba(25,43,91,.08); }
.dark-section { position: relative; overflow: hidden; background: #11182F; color: #EEF2FF; }
.dark-section::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 15% 20%, rgba(91,108,255,.3), transparent 30%), radial-gradient(circle at 84% 74%, rgba(0,212,255,.18), transparent 34%); pointer-events: none; }
.dark-section .container { position: relative; }
.dark-section h2, .dark-section h3 { color: #fff; }
.dark-section .section-kicker { color: #8BE9FF; }
.dark-section p { color: #C9D1EA; }
.safety-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.safety-card { display: grid; grid-template-columns: 150px 1fr; gap: 20px; align-items: center; padding: 22px; border: 1px solid rgba(255,255,255,.12); border-radius: 24px; background: rgba(255,255,255,.06); }
.safety-card img { width: 100%; height: 150px; object-fit: contain; border-radius: 18px; background: rgba(255,255,255,.05); }
.reviews { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.review-card { padding: 23px; }
.review-card .stars { color: var(--gold); letter-spacing: .15em; }
.review-card blockquote { margin: 12px 0 18px; color: #46516C; }
.review-card footer { color: var(--muted); font-size: 14px; }
.faq-list { display: grid; gap: 14px; }
details { border: 1px solid var(--border); border-radius: 18px; background: #fff; box-shadow: 0 12px 26px rgba(25,43,91,.07); }
summary { cursor: pointer; list-style: none; padding: 18px 52px 18px 20px; color: var(--title); font-weight: 800; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 20px; top: 14px; font-size: 24px; color: var(--primary); }
details[open] summary::after { content: "−"; }
details p { padding: 0 20px 20px; margin: 0; color: var(--muted); }
.notice-panel { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: start; padding: 24px; border-radius: 24px; background: linear-gradient(135deg, #FFF4D6, #EFF8FF); border: 1px solid rgba(255,200,87,.45); }
.notice-icon { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 16px; background: #fff; color: var(--rose); font-size: 24px; box-shadow: 0 12px 24px rgba(25,43,91,.1); }
.cta-band { display: flex; align-items: center; justify-content: space-between; gap: 26px; padding: 34px; border-radius: 30px; background: linear-gradient(135deg, #E8ECFF 0%, #FDEEFF 50%, #E7FAFF 100%); border: 1px solid var(--border); }
.cta-band h2 { margin-bottom: 8px; }
.inner-hero { position: relative; overflow: hidden; padding: 70px 0; background: radial-gradient(circle at 80% 20%, rgba(0,212,255,.18), transparent 28%), linear-gradient(145deg, #EEF0FF, #F9F4FF 54%, #EBFBFF); }
.inner-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 50px; }
.inner-hero h1 { font-size: clamp(38px, 6vw, 64px); }
.inner-hero img { width: 100%; max-height: 500px; display: block; object-fit: contain; border-radius: 28px; padding: 16px; background: rgba(255,255,255,.68); border: 1px solid rgba(255,255,255,.8); box-shadow: var(--shadow); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; color: var(--muted); font-size: 14px; }
.breadcrumbs a { color: var(--primary); text-decoration: none; }
.prose { font-size: 17px; }
.prose p { color: #4E5872; }
.numbered-steps { counter-reset: steps; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.step-card { counter-increment: steps; padding: 24px; border-radius: 22px; background: #fff; border: 1px solid var(--border); box-shadow: 0 14px 30px rgba(25,43,91,.08); }
.step-card::before { content: "0" counter(steps); display: inline-flex; color: var(--primary); font-size: 24px; font-weight: 900; margin-bottom: 13px; }
.icon-card { padding: 24px; border-radius: 22px; background: #fff; border: 1px solid var(--border); box-shadow: 0 14px 30px rgba(25,43,91,.08); }
.icon-badge { width: 46px; height: 46px; display: grid; place-items: center; margin-bottom: 15px; border-radius: 15px; background: linear-gradient(145deg, #E8ECFF, #E7FAFF); color: var(--primary); font-size: 21px; font-weight: 900; }
.quote-panel { padding: 30px; border-radius: 28px; background: #fff; border-left: 5px solid var(--primary); box-shadow: var(--shadow); }
.quote-panel blockquote { margin: 0; color: #44506A; font-size: 18px; }
.quote-panel cite { display: block; margin-top: 14px; color: var(--muted); font-style: normal; }
.site-footer { background: #0B1024; color: #EEF2FF; padding-top: 66px; }
.footer-main { display: grid; grid-template-columns: .9fr 2.1fr; gap: 60px; padding-bottom: 44px; }
.footer-logo { color: #fff; font-size: 23px; }
.footer-logo img { width: 46px; max-height: 46px; object-fit: contain; }
.footer-brand p { color: #BFC8E2; max-width: 420px; margin: 18px 0 24px; }
.footer-links { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.footer-links h3 { color: #fff; font-size: 16px; margin-bottom: 13px; }
.footer-links a { display: block; color: #BFC8E2; text-decoration: none; margin: 8px 0; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-compliance { padding: 20px 0; border-top: 1px solid rgba(255,255,255,.1); border-bottom: 1px solid rgba(255,255,255,.1); }
.footer-compliance p { margin: 0; color: #BFC8E2; font-size: 14px; }
.footer-compliance strong { color: #fff; }
.footer-bottom { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: #909BB9; font-size: 13px; }
.footer-bottom a { color: #BFC8E2; text-decoration: none; margin-left: 16px; }
.mobile-quick-nav { display: none; }
@media (max-width: 1080px) {
  .nav-core { gap: 2px; }
  .nav-core a { padding-inline: 9px; font-size: 14px; }
  .hero-grid { grid-template-columns: 1fr .9fr; gap: 34px; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .highlight-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-main { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  :root { --container: min(100% - 28px, 760px); }
  .nav-core, .menu-toggle-desktop { display: none; }
  .menu-toggle-mobile { display: grid; }
  .header-inner { min-height: 64px; gap: 12px; }
  .site-logo { position: absolute; left: 50%; transform: translateX(-50%); }
  .site-logo strong { display: none; }
  .site-logo img { max-height: 38px; }
  .header-actions { margin-left: auto; }
  .header-cta { min-height: 40px; padding: 8px 14px; font-size: 13px; }
  .hero, .inner-hero { padding: 48px 0; }
  .hero-grid, .inner-hero-grid, .media-split, .media-split.reverse { grid-template-columns: 1fr; }
  .hero-visual { max-width: 620px; margin: 0 auto; }
  .media-split.reverse .media-visual { order: initial; }
  .grid-3, .reviews, .numbered-steps { grid-template-columns: 1fr 1fr; }
  .safety-grid { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  body { padding-bottom: 74px; }
  .section { padding: 60px 0; }
  .section-sm { padding: 42px 0; }
  h1 { font-size: 48px; }
  .section-head { display: block; }
  .section-head .text-link { display: inline-block; margin-top: 10px; }
  .hero-actions { align-items: stretch; }
  .hero-actions a { flex: 1 1 150px; }
  .floating-card { position: static; display: inline-block; margin: 10px 8px 0 0; }
  .highlight-strip { margin-top: -12px; }
  .highlight-grid, .grid-2, .grid-3, .grid-4, .reviews, .numbered-steps, .mini-banner-row { grid-template-columns: 1fr; }
  .highlight-item { padding: 18px; }
  .channel-pill { flex-basis: 100%; }
  .safety-card { grid-template-columns: 100px 1fr; }
  .safety-card img { height: 110px; }
  .notice-panel { grid-template-columns: 1fr; }
  .cta-band { align-items: flex-start; flex-direction: column; padding: 26px; }
  .drawer-nav { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; justify-content: center; padding: 18px 0; }
  .footer-bottom a { margin: 0 14px 0 0; }
  .mobile-quick-nav { position: fixed; left: 10px; right: 10px; bottom: 8px; z-index: 9000; display: grid; grid-template-columns: repeat(4, 1fr); padding: 7px; border-radius: 20px; background: rgba(12,18,40,.95); backdrop-filter: blur(14px); box-shadow: 0 15px 35px rgba(12,18,40,.3); }
  .mobile-quick-nav a { display: flex; flex-direction: column; align-items: center; gap: 2px; color: #EEF2FF; text-decoration: none; font-size: 12px; }
  .mobile-quick-nav span { color: #8BE9FF; font-size: 17px; line-height: 1; }
}