:root {
  --bg: #F5F7FF;
  --ink: #1F2740;
  --title: #131A35;
  --muted: #66708A;
  --soft: #9AA4BA;
  --brand: #5B6CFF;
  --brand-2: #7A5CFF;
  --cyan: #00D4FF;
  --gold: #FFC857;
  --red: #D94F70;
  --deep: #11182F;
  --deep-2: #0B1024;
  --line: rgba(91,108,255,.18);
  --shadow: 0 20px 46px rgba(25,43,91,.14);
  --radius: 24px;
  --shell: min(1180px, calc(100% - 36px));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.75; overflow-x: hidden; }
a { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea { font: inherit; }
.site-header { position: sticky; top: 0; width: 100%; z-index: 9999; background: rgba(12,18,40,.94); backdrop-filter: blur(12px); box-shadow: 0 8px 26px rgba(25,43,91,.16); }
.header-inner { width: var(--shell); min-height: 72px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-size: 20px; font-weight: 800; text-decoration: none; white-space: nowrap; }
.site-logo img { width: 44px; height: 44px; object-fit: contain; }
.nav-core { display: flex; align-items: center; justify-content: center; gap: 6px; flex: 1; }
.nav-core a { color: #EEF2FF; text-decoration: none; border-radius: 999px; padding: 8px 12px; font-size: 15px; transition: .2s 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; }
.main-btn, .secondary-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 11px 24px; border-radius: 999px; text-decoration: none; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease; }
.main-btn { color: #fff; background: linear-gradient(135deg,#5B6CFF 0%,#7A5CFF 48%,#00D4FF 100%); box-shadow: 0 14px 32px rgba(91,108,255,.22); }
.main-btn:hover, .secondary-btn:hover { transform: translateY(-2px); }
.main-btn.compact { min-height: 42px; padding: 9px 18px; font-size: 14px; }
.secondary-btn { color: var(--brand); background: #fff; border: 1px solid var(--line); }
.menu-toggle { width: 42px; height: 42px; border: 1px solid rgba(255,255,255,.16); border-radius: 14px; background: rgba(255,255,255,.08); display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; cursor: pointer; }
.menu-toggle span { width: 18px; height: 2px; border-radius: 2px; background: #fff; }
.mobile-only { display: none; }
.drawer-overlay { position: fixed; inset: 0; background: rgba(5,9,24,.58); z-index: 10000; opacity: 0; visibility: hidden; transition: .25s ease; }
.site-drawer { position: fixed; top: 0; right: 0; width: min(390px, 90vw); height: 100dvh; z-index: 10001; background: #fff; box-shadow: -22px 0 52px rgba(8,14,40,.24); transform: translateX(104%); transition: transform .25s ease; overflow-y: auto; padding: 22px; }
.drawer-open { overflow: hidden; }
.drawer-open .drawer-overlay { opacity: 1; visibility: visible; }
.drawer-open .site-drawer { transform: translateX(0); }
.drawer-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; border-bottom: 1px solid var(--line); color: var(--title); font-size: 20px; }
.drawer-close { border: 0; background: #eef1ff; color: var(--title); width: 38px; height: 38px; border-radius: 12px; cursor: pointer; font-size: 26px; line-height: 1; }
.drawer-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 18px 0; }
.drawer-nav a { text-decoration: none; padding: 12px 14px; border-radius: 14px; background: #F5F7FF; color: var(--title); font-weight: 700; }
.drawer-nav a:hover { background: #EAF7FF; color: var(--brand); }
.drawer-note { padding: 16px; border-radius: 16px; background: #FFF4D6; color: #6e5520; font-size: 14px; }
.site-main { min-height: 70vh; }
.section-shell { width: var(--shell); margin-inline: auto; }
.section { padding: 78px 0; }
.section.slim { padding: 52px 0; }
.section-head { max-width: 760px; margin-bottom: 30px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-kicker { color: var(--brand); font-weight: 900; letter-spacing: .08em; font-size: 13px; text-transform: uppercase; }
h1,h2,h3,.section-title { color: var(--title); line-height: 1.22; margin-top: 0; }
h1 { font-size: clamp(42px, 7vw, 78px); margin-bottom: 18px; letter-spacing: -.04em; }
h2 { font-size: clamp(28px, 4vw, 44px); margin-bottom: 14px; }
h3 { font-size: 22px; margin-bottom: 10px; }
p { margin-top: 0; }
.lead { color: var(--muted); font-size: 18px; }
.muted { color: var(--muted); }
.hero { position: relative; overflow: hidden; padding: 86px 0 76px; background: radial-gradient(circle at 20% 10%, rgba(122,92,255,.2), transparent 34%), radial-gradient(circle at 80% 20%, rgba(0,212,255,.18), transparent 34%), linear-gradient(135deg,#F8F6FF 0%,#EEF7FF 52%,#FFF4FA 100%); }
.hero::before, .hero::after { content: ""; position: absolute; width: 260px; height: 260px; border-radius: 50%; filter: blur(4px); opacity: .55; }
.hero::before { left: -120px; bottom: -100px; background: rgba(91,108,255,.22); }
.hero::after { right: -100px; top: 30px; background: rgba(217,79,112,.15); }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 58px; align-items: center; }
.hero-copy h1 span { display: block; font-size: .38em; letter-spacing: .02em; color: var(--brand); margin-bottom: 12px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-points span { display: inline-flex; align-items: center; gap: 7px; padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.8); border: 1px solid rgba(91,108,255,.13); color: var(--title); font-weight: 700; font-size: 14px; }
.hero-points span::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: linear-gradient(135deg,var(--brand),var(--cyan)); }
.hero-visual { position: relative; }
.hero-visual::before { content: ""; position: absolute; inset: 8% -5% -4% 8%; border-radius: 36px; background: linear-gradient(135deg,rgba(91,108,255,.18),rgba(0,212,255,.12)); transform: rotate(4deg); }
.hero-visual img { position: relative; width: 100%; max-height: 610px; object-fit: contain; filter: drop-shadow(0 30px 42px rgba(25,43,91,.22)); }
.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; }
.card, .zone-card, .info-card, .review-card, .faq-item { background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius); }
.info-card, .review-card { padding: 24px; }
.info-card .icon { width: 46px; height: 46px; border-radius: 15px; background: linear-gradient(135deg,#EEF0FF,#EAFBFF); display: grid; place-items: center; color: var(--brand); font-weight: 900; margin-bottom: 16px; }
.channel-pills { display: flex; flex-wrap: wrap; gap: 12px; }
.channel-pill { flex: 1 1 190px; min-height: 106px; display: flex; flex-direction: column; justify-content: space-between; padding: 16px 18px; border-radius: 18px; background: #fff; border: 1px solid var(--line); text-decoration: none; box-shadow: 0 12px 28px rgba(25,43,91,.08); }
.channel-pill strong { color: var(--title); }
.channel-pill span { color: var(--muted); font-size: 13px; }
.channel-pill em { color: var(--brand); font-style: normal; font-weight: 800; font-size: 13px; }
.media-split { display: grid; grid-template-columns: .95fr 1.05fr; gap: 34px; align-items: center; }
.media-split.reverse { grid-template-columns: 1.05fr .95fr; }
.media-split.reverse .media-art { order: 2; }
.media-art { position: relative; padding: 18px; border-radius: 30px; background: linear-gradient(135deg,#EFF0FF,#EAF7FF); }
.media-art img { width: 100%; max-height: 500px; object-fit: contain; border-radius: 20px; }
.media-copy { padding: 8px 0; }
.feature-list { display: grid; gap: 12px; margin: 20px 0 26px; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-left: 28px; color: var(--muted); }
.feature-list li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; border-radius: 50%; display: grid; place-items: center; background: #EAF7FF; color: var(--brand); font-weight: 900; font-size: 12px; }
.text-link { color: var(--brand); font-weight: 800; text-decoration: none; }
.zone-card { overflow: hidden; }
.zone-card img { width: 100%; aspect-ratio: 16/10; object-fit: contain; background: linear-gradient(135deg,#EEF2FF,#F5FBFF); padding: 14px; }
.zone-card .card-body { padding: 24px; }
.zone-card .mini-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.zone-card .mini-links a { color: var(--brand); font-size: 14px; font-weight: 800; text-decoration: none; }
.deep-section { background: linear-gradient(135deg,#11182F,#16213E); color: #EEF2FF; }
.deep-section h2, .deep-section h3 { color: #fff; }
.deep-section .muted, .deep-section p { color: #C9D2EC; }
.security-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; }
.security-card { display: grid; grid-template-columns: 180px 1fr; gap: 22px; align-items: center; padding: 22px; border-radius: 24px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12); }
.security-card img { width: 100%; max-height: 180px; object-fit: contain; }
.review-card blockquote { margin: 0; color: var(--ink); }
.review-card footer { margin-top: 16px; color: var(--brand); font-weight: 800; }
.review-card footer::before { content: "— "; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 0 22px; box-shadow: none; }
.faq-item summary { cursor: pointer; list-style: none; padding: 20px 34px 20px 0; color: var(--title); font-weight: 800; position: relative; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 0; top: 17px; color: var(--brand); font-size: 26px; }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { color: var(--muted); padding-bottom: 20px; }
.notice { padding: 24px; border-radius: 22px; background: linear-gradient(135deg,#FFF4D6,#FFF9EA); border: 1px solid rgba(255,200,87,.36); color: #5e4a20; }
.notice strong { color: #3c2c0d; }
.page-hero { padding: 72px 0 58px; background: radial-gradient(circle at 12% 20%, rgba(91,108,255,.16), transparent 30%), radial-gradient(circle at 86% 18%, rgba(0,212,255,.14), transparent 32%), linear-gradient(135deg,#F7F5FF,#EEF8FF); }
.page-hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 46px; align-items: center; }
.page-hero h1 { font-size: clamp(38px,6vw,62px); }
.page-hero img { width: 100%; max-height: 430px; object-fit: contain; filter: drop-shadow(0 24px 36px rgba(25,43,91,.18)); }
.content-layout { display: grid; grid-template-columns: minmax(0,1fr) 320px; gap: 34px; align-items: start; }
.article-card { padding: 34px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--radius); }
.article-card + .article-card { margin-top: 22px; }
.article-card p:last-child { margin-bottom: 0; }
.side-stack { display: grid; gap: 18px; position: sticky; top: 98px; }
.side-card { padding: 22px; border-radius: 20px; background: #fff; border: 1px solid var(--line); box-shadow: 0 14px 34px rgba(25,43,91,.1); }
.side-card img { width: 100%; max-height: 220px; object-fit: contain; margin-bottom: 14px; border-radius: 16px; background: #F5F7FF; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.tag { display: inline-flex; padding: 7px 10px; border-radius: 999px; background: #EEF0FF; color: var(--brand); font-size: 13px; font-weight: 800; }
.steps { counter-reset: step; display: grid; gap: 14px; margin-top: 20px; }
.step { position: relative; padding: 18px 18px 18px 68px; background: #F7F8FF; border-radius: 18px; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 18px; top: 17px; width: 34px; height: 34px; display: grid; place-items: center; border-radius: 12px; background: linear-gradient(135deg,var(--brand),var(--brand-2)); color: #fff; font-weight: 900; }
.cta-band { padding: 36px; border-radius: 28px; background: linear-gradient(135deg,#5B6CFF,#7A5CFF 48%,#00AFCF); color: #fff; display: flex; justify-content: space-between; gap: 24px; align-items: center; }
.cta-band h2 { color: #fff; margin-bottom: 8px; }
.cta-band p { color: #EEF2FF; margin-bottom: 0; }
.cta-band .secondary-btn { flex: 0 0 auto; }
.site-footer { background: #0B1024; color: #EEF2FF; padding: 60px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3,1fr); gap: 34px; }
.footer-grid h2 { color: #fff; font-size: 17px; margin-bottom: 14px; }
.footer-grid a { display: block; color: #BBC6E5; text-decoration: none; margin: 8px 0; }
.footer-grid a:hover { color: #fff; }
.footer-brand p { color: #BBC6E5; max-width: 430px; }
.footer-logo { margin-bottom: 16px; }
.footer-bottom { margin-top: 34px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); display: flex; justify-content: space-between; gap: 20px; color: #9FAACA; font-size: 14px; }
.footer-bottom div { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-bottom a { color: #DDE4FA; text-decoration: none; }
.mobile-bottom-nav { display: none; }
.contact-form { display: grid; gap: 14px; }
.contact-form label { color: var(--title); font-weight: 800; }
.contact-form input, .contact-form textarea { width: 100%; border: 1px solid var(--line); background: #FAFBFF; border-radius: 14px; padding: 13px 14px; outline: none; }
.contact-form input:focus, .contact-form textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(91,108,255,.12); }
.contact-form textarea { min-height: 150px; resize: vertical; }
@media (max-width: 980px) {
  .nav-core { display: none; }
  .mobile-only { display: inline-flex; }
  .desktop-menu { display: none; }
  .header-inner { min-height: 66px; }
  .site-logo span { display: none; }
  .hero-grid, .page-hero-grid, .media-split, .media-split.reverse, .content-layout { grid-template-columns: 1fr; }
  .media-split.reverse .media-art { order: 0; }
  .grid-4 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .grid-3 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .security-grid { grid-template-columns: 1fr; }
  .side-stack { position: static; grid-template-columns: repeat(2,minmax(0,1fr)); }
  .footer-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 680px) {
  :root { --shell: min(100% - 24px, 1180px); }
  body { padding-bottom: 74px; }
  .site-header { position: sticky; }
  .header-inner { gap: 8px; }
  .site-logo { position: absolute; left: 50%; transform: translateX(-50%); }
  .site-logo img { width: 38px; height: 38px; }
  .main-btn.compact { min-height: 38px; padding: 8px 13px; font-size: 12px; }
  .hero { padding: 56px 0 48px; }
  .hero-grid { gap: 32px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .main-btn, .secondary-btn { width: 100%; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .section.slim { padding: 40px 0; }
  .security-card { grid-template-columns: 1fr; }
  .article-card { padding: 24px; }
  .side-stack { grid-template-columns: 1fr; }
  .cta-band { flex-direction: column; align-items: stretch; padding: 26px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
  .mobile-bottom-nav { position: fixed; z-index: 9998; left: 12px; right: 12px; bottom: 10px; height: 58px; display: grid; grid-template-columns: repeat(4,1fr); align-items: center; padding: 6px; border-radius: 20px; background: rgba(11,16,36,.96); backdrop-filter: blur(12px); box-shadow: 0 12px 34px rgba(7,12,35,.28); }
  .mobile-bottom-nav a { color: #DDE4FA; text-decoration: none; display: grid; justify-items: center; font-size: 11px; line-height: 1.2; }
  .mobile-bottom-nav span { font-size: 18px; color: #9FB9FF; }
  .drawer-nav { grid-template-columns: 1fr; }
}