:root {
  --dmp-red: #c41230;
  --dmp-yellow: #ffd700;
  --dmp-dark: #1a1a1a;
  --dmp-gray: #f5f5f5;
  --text: #333;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--text); line-height: 1.65; background: #fff; }
img { max-width: 100%; display: block; }
.container { width: 92%; max-width: 760px; margin: 0 auto; }
a { color: var(--dmp-red); }

/* Sticky bar */
.sticky-bar { position: sticky; top: 0; z-index: 50; background: rgba(26,26,26,.96); backdrop-filter: blur(6px); border-bottom: 1px solid rgba(255,215,0,.3); }
.sticky-bar .container { display: flex; align-items: center; justify-content: space-between; padding: 9px 0; }
.sticky-bar .brand { font-weight: 700; color: #fff; font-size: 14px; }
.sticky-bar .brand span { color: var(--dmp-yellow); }
.sticky-bar .right { display: flex; gap: 10px; align-items: center; }
.sticky-bar .wx { color: var(--dmp-yellow); font-size: 13px; }
.sticky-bar .btn { padding: 7px 16px; font-size: 13px; }

/* Buttons */
.btn { display: inline-block; padding: 14px 28px; border-radius: 50px; font-weight: 700; text-decoration: none; text-align: center; border: none; cursor: pointer; font-size: 16px; transition: transform .15s, box-shadow .15s; }
.btn-primary { background: var(--dmp-red); color: #fff; box-shadow: 0 6px 18px rgba(196,18,48,.35); }
.btn-primary:active { transform: scale(.98); }
.btn-ghost { background: #fff; color: var(--dmp-red); border: 2px solid var(--dmp-red); }
.btn-yellow { background: var(--dmp-yellow); color: var(--dmp-dark); }

/* Hero */
.hero { background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%); color: #fff; padding: 54px 0 44px; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; top: -30%; right: -20%; width: 300px; height: 300px; background: radial-gradient(circle, rgba(255,215,0,.15) 0%, transparent 70%); border-radius: 50%; }
.hero .tag { display: inline-block; background: var(--dmp-yellow); color: var(--dmp-dark); padding: 4px 12px; border-radius: 4px; font-size: 12px; font-weight: 700; margin-bottom: 14px; }
.hero h1 { font-size: 28px; line-height: 1.3; margin-bottom: 12px; }
.hero h1 span { color: var(--dmp-yellow); }
.hero .subtitle { font-size: 16px; opacity: .9; margin-bottom: 20px; }
.hero .meta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.hero .meta span { background: rgba(255,255,255,.12); padding: 6px 12px; border-radius: 20px; font-size: 13px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }

/* Sections */
section { padding: 42px 0; }
.section-title { font-size: 23px; text-align: center; margin-bottom: 8px; color: var(--dmp-dark); }
.section-sub { text-align: center; color: #777; font-size: 14px; margin-bottom: 26px; }
.bg-gray { background: var(--dmp-gray); }
.bg-yellow { background: #fffbe6; }

/* Pain / value cards */
.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.card { background: #fff; border-radius: 12px; padding: 18px 16px; box-shadow: 0 2px 8px rgba(0,0,0,.05); border: 1px solid #eee; }
.card h3 { font-size: 16px; margin-bottom: 8px; color: var(--dmp-red); }
.card p { font-size: 14px; color: #555; }
.pain-list { list-style: none; }
.pain-list li { background: #fff; border-left: 4px solid var(--dmp-red); border-radius: 0 10px 10px 0; padding: 14px 16px; margin-bottom: 12px; font-size: 15px; box-shadow: 0 2px 8px rgba(0,0,0,.04); }
.pain-list li b { color: var(--dmp-red); }

/* Price box */
.price-box { background: #fff; border: 2px solid var(--dmp-yellow); border-radius: 14px; padding: 22px; text-align: center; box-shadow: 0 4px 14px rgba(0,0,0,.06); }
.price-box .big { font-size: 34px; font-weight: 800; color: var(--dmp-red); }
.price-box .small { font-size: 14px; color: #666; margin-top: 6px; }
.price-box .row { display: flex; justify-content: space-around; margin-top: 16px; flex-wrap: wrap; gap: 10px; }
.price-box .row div { font-size: 14px; }
.price-box .row b { display: block; color: var(--dmp-dark); font-size: 18px; }

/* Subsidy */
.subsidy-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.subsidy-item { background: #fff; border-radius: 10px; padding: 16px; box-shadow: 0 2px 8px rgba(0,0,0,.04); }
.subsidy-item b { color: var(--dmp-red); }

/* FAQ */
.faq details { background: var(--dmp-gray); border-radius: 10px; padding: 14px 16px; margin-bottom: 10px; border: 1px solid #eee; }
.faq summary { font-weight: 700; cursor: pointer; font-size: 15px; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "＋"; float: right; color: var(--dmp-red); font-weight: 700; }
.faq details[open] summary::after { content: "－"; }
.faq p { font-size: 14px; color: #555; margin-top: 10px; }

/* CTA / contact */
.contact { background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%); color: #fff; text-align: center; }
.contact h2 { color: #fff; }
.contact .big { font-size: 26px; font-weight: 800; color: var(--dmp-yellow); margin: 10px 0; }
.contact .actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin: 18px 0; }
.contact .wx-box { background: rgba(255,255,255,.1); border: 1px dashed rgba(255,215,0,.5); border-radius: 12px; padding: 16px; display: inline-block; }
.contact code { font-size: 22px; font-weight: 800; color: var(--dmp-yellow); letter-spacing: 2px; }
.contact a.btn-ghost { color: var(--dmp-yellow); border-color: var(--dmp-yellow); }

/* Hub chips */
.hub-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.hub-card { display: block; text-decoration: none; color: inherit; background: #fff; border: 2px solid #eee; border-radius: 12px; padding: 20px 16px; transition: border-color .15s, transform .15s; }
.hub-card:hover { border-color: var(--dmp-red); transform: translateY(-3px); }
.hub-card .k { font-size: 13px; color: var(--dmp-red); font-weight: 700; }
.hub-card .t { font-size: 19px; font-weight: 800; margin: 6px 0; color: var(--dmp-dark); }
.hub-card .d { font-size: 13px; color: #666; }

/* Nav back */
.back-home { text-align: center; margin-top: 14px; font-size: 14px; }

/* Tencent survey iframe */
.wj-wrap { background: #fff; border-radius: 14px; padding: 6px; box-shadow: 0 2px 10px rgba(0,0,0,.06); }
.wj-wrap iframe { width: 100%; min-height: 760px; border: none; border-radius: 10px; display: block; }
.wj-note { text-align: center; font-size: 13px; color: #888; margin-top: 10px; }

footer { background: var(--dmp-dark); color: #aaa; padding: 22px 0; text-align: center; font-size: 13px; }

@media (max-width: 560px) {
  .card-grid, .subsidy-list, .hub-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 24px; }
}