:root{--bg:#f7fffb;--surface:#ffffff;--surface-2:#eaf8ef;--text:#14261b;--muted:#5b7163;--line:#d5e8da;--accent:#1f9660;--accent-2:#87d7ab;--hero-base:#184d33;--shadow:0 24px 60px rgba(31,150,96,.12);--radius:24px;--container:min(1180px,calc(100% - 32px));}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.72;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.page-security-help .site-header{background:rgba(14,23,49,.94)}
.site-header-inner{width:var(--container);margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}
.brand-link{display:flex;align-items:center;gap:14px;text-decoration:none;min-width:0}
.brand-logo-shell{display:flex;align-items:center;justify-content:center;padding:10px 14px;border-radius:16px;background:#101b30;box-shadow:0 10px 24px rgba(0,0,0,.18)}
.brand-link img{width:auto;height:32px;max-width:170px;object-fit:contain}
.brand-copy{display:flex;flex-direction:column;gap:2px}
.brand-copy strong{font-size:15px}
.brand-copy span{font-size:12px;color:var(--muted)}
.page-security-help .brand-copy strong,.page-security-help .brand-copy span,.page-security-help .site-nav a,.page-security-help .menu-toggle{color:#f5f7ff}
.menu-toggle{display:none;border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:10px 16px;font:inherit}
.page-security-help .menu-toggle{background:transparent}
.site-nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.site-nav a{text-decoration:none;font-size:14px;color:var(--muted)}
.page-main{padding-bottom:80px}
.premium-hero{position:relative}
.premium-hero-background{min-height:620px;display:flex;align-items:center;overflow:hidden;background:var(--hero-base)}
.premium-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.premium-hero-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,11,20,.92) 0%,rgba(7,11,20,.7) 38%,rgba(7,11,20,.3) 100%),linear-gradient(180deg,rgba(10,12,22,.18) 0%,rgba(10,12,22,.78) 100%)}
.premium-hero-inner{position:relative;z-index:1;width:var(--container);margin:0 auto;padding:88px 0}
.premium-hero-copy{max-width:760px}
.eyebrow,.kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.14);color:#fff;font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.premium-hero-copy h1{margin:18px 0 0;font-size:clamp(38px,5vw,68px);line-height:1.06;color:#fff;letter-spacing:-.04em}
.premium-hero-copy p{margin:22px 0 0;font-size:18px;color:rgba(255,255,255,.88);max-width:700px}
.hero-tags,.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-tags span,.tag-list span{display:inline-flex;align-items:center;min-height:36px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);color:#fff;font-size:14px;font-weight:700}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-actions a{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:999px;background:var(--accent);color:#fff;text-decoration:none;font-weight:800}
.hero-actions a+a{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24)}
.premium-hero-board{padding:40px 0 18px}
.board-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(320px,.98fr);gap:28px;align-items:center}
.premium-hero-board .premium-hero-copy h1,.premium-hero-board .premium-hero-copy p{color:var(--text)}
.premium-hero-board .premium-hero-copy p{max-width:none}
.premium-hero-board .eyebrow{background:var(--surface-2);color:var(--accent)}
.premium-hero-board .hero-tags span{background:var(--surface);border-color:var(--line);color:var(--text)}
.premium-hero-board .hero-actions a+a{background:var(--surface);border-color:var(--line);color:var(--text)}
.hero-visual{background:var(--surface);border:1px solid var(--line);border-radius:32px;padding:18px;box-shadow:var(--shadow)}
.hero-visual>img{border-radius:22px;max-height:360px;object-fit:cover;width:100%}
.hero-mini-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:16px}
.mini-card{padding:18px;border-radius:22px;background:var(--surface-2)}
.mini-card h3{margin:0 0 8px;font-size:15px}
.mini-card p{margin:0;font-size:13px;color:var(--muted)}
.content-section{width:var(--container);margin:28px auto 0}
.section-heading{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
.section-heading .kicker{background:var(--surface-2);color:var(--accent);align-self:flex-start}
.section-heading h2{margin:0;font-size:clamp(26px,3vw,40px);line-height:1.12}
.section-heading p{margin:0;max-width:780px;color:var(--muted)}
.card-grid,.check-grid,.media-grid,.faq-list{display:grid;gap:18px}
.card-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.media-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.info-card,.check-card,.media-card,.table-wrap,.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.info-card,.check-card{padding:22px}
.info-card h3,.check-card h3,.media-copy h3{margin:0 0 10px;font-size:20px}
.info-card p,.check-card li,.media-copy p,.faq-item p{margin:0;color:var(--muted)}
.check-card ul{margin:0;padding-left:20px;display:grid;gap:8px}
.media-card{overflow:hidden}
.media-thumb{background:var(--surface-2);padding:16px;display:flex;align-items:center;justify-content:center;min-height:220px}
.media-thumb img{width:100%;max-height:320px;object-fit:cover;object-position:center}
.media-copy{padding:20px}
.timeline-list{display:grid;gap:16px}
.timeline-item{display:grid;grid-template-columns:72px 1fr;gap:16px;align-items:flex-start;padding:22px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
.timeline-index{display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:18px;background:var(--surface-2);color:var(--accent);font-size:22px;font-weight:800}
.timeline-item h3{margin:0 0 8px}
.timeline-item p{margin:0;color:var(--muted)}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;min-width:640px}
th,td{padding:16px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font-size:14px;color:var(--muted);font-weight:800;background:var(--surface-2)}
.faq-list{grid-template-columns:1fr}
.faq-item summary{cursor:pointer;list-style:none;padding:22px 24px;font-weight:800}
.faq-item p{padding:0 24px 22px}
.page-security-help{background:#0e1731;color:#f5f7ff}
.page-security-help .section-heading p,.page-security-help .info-card p,.page-security-help .check-card li,.page-security-help .timeline-item p,.page-security-help .media-copy p,.page-security-help th,.page-security-help td,.page-security-help .faq-item p{color:#c6d2f2}
.page-security-help .info-card,.page-security-help .check-card,.page-security-help .media-card,.page-security-help .timeline-item,.page-security-help .table-wrap,.page-security-help .faq-item{background:#132042;border-color:#2e4674}
.page-security-help .section-heading .kicker{background:#172a55;color:#8bd4ff}
.page-brand-hub .card-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.page-download-center .card-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.page-download-center .media-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.page-club-hub .card-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.page-private-room .timeline-list{grid-template-columns:repeat(2,minmax(0,1fr))}
.page-mobile-entry .hero-visual>img{max-height:420px;object-fit:contain}
.page-mobile-entry .media-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.page-newbie-guide .timeline-list{grid-template-columns:repeat(2,minmax(0,1fr))}
.page-about-hhpoker .card-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1080px){
  .board-grid,.card-grid,.check-grid,.media-grid,.page-download-center .media-grid,.page-mobile-entry .media-grid,.page-private-room .timeline-list,.page-newbie-guide .timeline-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero-mini-cards{grid-template-columns:1fr}
}
@media (max-width:760px){
  .menu-toggle{display:inline-flex}
  .site-nav{position:absolute;top:100%;right:16px;left:16px;display:none;flex-direction:column;align-items:flex-start;padding:16px;border-radius:20px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow)}
  .page-security-help .site-nav{background:#132042}
  .site-nav.is-open{display:flex}
  .site-header-inner{position:relative}
  .premium-hero-background{min-height:560px}
  .premium-hero-inner{padding:64px 0}
  .board-grid,.card-grid,.check-grid,.media-grid,.page-download-center .media-grid,.page-mobile-entry .media-grid,.page-private-room .timeline-list,.page-newbie-guide .timeline-list,.page-about-hhpoker .card-grid{grid-template-columns:1fr}
  .premium-hero-copy h1{font-size:38px}
  .premium-hero-copy p{font-size:16px}
  .brand-link img{max-width:150px;height:28px}
  .timeline-item{grid-template-columns:1fr}
  .timeline-index{margin-bottom:8px}
  th,td{padding:14px}
}