/*
  项目：爆爆悦看官方网站
  说明：所有主要页面元素均已添加 data-element 标注，可点击页面右下角“显示元素标注”查看。
*/
:root {
  --red-900: #8c0505;
  --red-800: #b50709;
  --red-600: #ef1b18;
  --orange-600: #ff6a00;
  --orange-400: #ff9d22;
  --gold-500: #ffd33d;
  --gold-300: #ffe98a;
  --cream: #fff8ed;
  --white: #ffffff;
  --ink: #36100d;
  --muted: #7d4b3f;
  --line: rgba(138, 44, 18, .14);
  --shadow: 0 28px 80px rgba(230, 57, 15, .25);
  --radius-xl: 34px;
  --radius-md: 22px;
  --max: 1180px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #fff3df 0%, #fffaf3 48%, #fff4e1 100%);
  overflow-x: hidden;
}
body.modal-open { overflow: hidden; }
button, a { font: inherit; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.site-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 16% 12%, rgba(255, 216, 63, .33), transparent 22%),
    radial-gradient(circle at 82% 6%, rgba(255, 80, 28, .28), transparent 24%),
    linear-gradient(rgba(255, 140, 33, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 140, 33, .05) 1px, transparent 1px);
  background-size: auto, auto, 46px 46px, 46px 46px;
}

/* 顶部导航栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(168, 5, 5, .88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,.16);
}
.header-inner {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--white); }
.brand-icon { width: 46px; height: 46px; border-radius: 12px; box-shadow: 0 8px 24px rgba(255, 211, 61, .36); }
.brand-text strong { display: block; font-size: 22px; letter-spacing: .02em; }
.brand-text em { display: block; font-style: normal; font-size: 12px; opacity: .78; margin-top: 2px; }
.nav { display: flex; align-items: center; gap: 42px; color: rgba(255,255,255,.84); font-weight: 700; }
.nav a { position: relative; padding: 8px 0; }
.nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; transform: scaleX(0); background: var(--gold-500); transition: transform .22s ease; }
.nav a:hover::after { transform: scaleX(1); }
.nav-cta {
  border: 0;
  border-radius: 999px;
  padding: 12px 22px;
  cursor: pointer;
  font-weight: 900;
  color: var(--red-900);
  background: linear-gradient(180deg, #fff8bd, #ffc928);
  box-shadow: 0 14px 34px rgba(255, 211, 61, .32);
}

/* 首屏 */
.hero-section {
  position: relative;
  min-height: 720px;
  padding: 96px 0 120px;
  color: var(--white);
  overflow: hidden;
  background:
    radial-gradient(circle at 26% 30%, rgba(255, 211, 61, .55), transparent 24%),
    radial-gradient(circle at 68% 34%, rgba(255, 166, 44, .4), transparent 26%),
    linear-gradient(135deg, #b40003 0%, #f21811 44%, #ff7a00 100%);
}
.hero-section::before {
  content: "";
  position: absolute;
  inset: auto -6% -120px -6%;
  height: 260px;
  background: var(--cream);
  border-radius: 52% 48% 0 0 / 45% 45% 0 0;
  box-shadow: 0 -28px 70px rgba(255, 255, 255, .26);
}
.hero-section::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(110deg, transparent 0 12%, rgba(255,255,255,.11) 12.4% 13%, transparent 13.4% 100%),
    linear-gradient(42deg, transparent 0 72%, rgba(255,255,255,.12) 72.4% 73%, transparent 73.4% 100%);
  pointer-events: none;
}
.hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: .94fr 1.06fr; gap: 44px; align-items: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.22);
  font-weight: 800;
  margin-bottom: 24px;
}
.eyebrow::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--gold-500); box-shadow: 0 0 18px var(--gold-500); }
.hero-copy h1 { margin: 0; font-size: clamp(56px, 8vw, 108px); line-height: .96; letter-spacing: -.08em; text-shadow: 0 10px 22px rgba(92, 3, 0, .32); }
.hero-slogan { margin: 24px 0 0; font-size: clamp(24px, 3.1vw, 42px); font-weight: 900; letter-spacing: -.03em; }
.hero-desc { margin: 20px 0 0; max-width: 610px; line-height: 1.9; color: rgba(255,255,255,.86); font-size: 17px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 36px; }
.primary-btn, .ghost-btn {
  min-height: 62px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 34px;
  font-weight: 950;
  font-size: 20px;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease;
}
.primary-btn { border: 0; color: #9a1a00; background: linear-gradient(180deg, #fff291 0%, #ffd638 42%, #ff9e12 100%); box-shadow: inset 0 4px 0 rgba(255,255,255,.38), 0 20px 42px rgba(129, 12, 0, .28); }
.primary-btn::after { content: "↓"; margin-left: 10px; font-size: .92em; }
.ghost-btn { color: var(--white); background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.24); }
.primary-btn:hover, .ghost-btn:hover, .nav-cta:hover { transform: translateY(-2px); }
.download-tip { margin: 14px 0 0; color: rgba(255,255,255,.78); }
.hero-visual { min-height: 560px; position: relative; }
.icon-showcase {
  position: absolute;
  left: 2%;
  top: 12%;
  width: 230px;
  padding: 18px;
  border-radius: 48px;
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.34);
  box-shadow: 0 28px 80px rgba(116, 5, 0, .28);
  transform: rotate(-4deg);
}
.icon-showcase img { border-radius: 35px; box-shadow: 0 10px 30px rgba(255, 211, 61, .28); }
.phone-mockup {
  position: absolute;
  right: 5%;
  top: 1%;
  width: 275px;
  height: 540px;
  padding: 14px;
  border-radius: 44px;
  background: linear-gradient(135deg, #111, #3b1b19 62%, #111);
  box-shadow: 0 42px 90px rgba(62, 2, 0, .36);
  transform: rotate(7deg);
}
.phone-mockup::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 18px;
  width: 94px;
  height: 24px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: #080808;
  z-index: 2;
}
.phone-screen {
  height: 100%;
  border-radius: 32px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 14px;
  padding: 28px;
  background:
    radial-gradient(circle at 50% 28%, rgba(255, 211, 61, .42), transparent 34%),
    linear-gradient(180deg, #ff271d, #ff7a00);
  text-align: center;
}
.phone-screen img { width: 128px; border-radius: 28px; box-shadow: 0 14px 34px rgba(0,0,0,.18); }
.phone-screen strong { font-size: 28px; text-shadow: 0 4px 12px rgba(0,0,0,.2); }
.phone-screen span { font-weight: 800; color: rgba(255,255,255,.85); }
.coin { position: absolute; width: 72px; height: 72px; border-radius: 50%; background: radial-gradient(circle at 30% 25%, #fff6a1 0 14%, #ffd43d 16% 40%, #ff9b00 42% 100%); box-shadow: inset 0 -6px 0 rgba(143, 69, 0, .18), 0 12px 28px rgba(255, 211, 61, .28); }
.coin::after { content: ""; position: absolute; inset: 22px; border: 4px solid rgba(150, 58, 0, .42); transform: rotate(45deg); border-radius: 4px; }
.coin-a { left: 0; bottom: 22%; transform: rotate(-22deg); }
.coin-b { right: 0; bottom: 18%; width: 58px; height: 58px; }
.coin-c { left: 42%; top: 58%; width: 46px; height: 46px; }
.spark { position: absolute; width: 30px; height: 30px; background: #fff; clip-path: polygon(50% 0, 61% 38%, 100% 50%, 61% 62%, 50% 100%, 39% 62%, 0 50%, 39% 38%); filter: drop-shadow(0 0 12px #ffe57b); }
.spark-a { left: 37%; top: 8%; }
.spark-b { right: 12%; top: 54%; width: 22px; height: 22px; }

/* 通用模块 */
.section { padding: 92px 0; }
.section-title { text-align: center; max-width: 760px; margin: 0 auto 42px; }
.section-title span { display: inline-block; margin-bottom: 14px; color: var(--orange-600); font-size: 13px; font-weight: 950; letter-spacing: .16em; }
.section-title h2 { margin: 0; font-size: clamp(34px, 4.4vw, 56px); letter-spacing: -.06em; color: #8b130c; }
.section-title p { margin: 16px 0 0; color: var(--muted); line-height: 1.8; }
.about-layout { display: grid; grid-template-columns: 1fr .95fr; gap: 28px; align-items: stretch; }
.feature-panel, .visual-card, .contact-card {
  border: 1px solid rgba(255, 122, 0, .18);
  background: rgba(255,255,255,.72);
  box-shadow: 0 24px 70px rgba(255, 117, 0, .1);
  border-radius: var(--radius-xl);
}
.feature-panel { padding: 38px; }
.feature-panel h3 { margin: 0 0 14px; color: #9a1906; font-size: 28px; }
.feature-panel p { margin: 0; color: var(--muted); line-height: 1.85; }
.feature-list { margin-top: 30px; display: grid; gap: 16px; }
.feature-item { display: grid; grid-template-columns: 54px 1fr; gap: 16px; align-items: center; padding: 16px; border-radius: 22px; background: #fff6ea; border: 1px solid var(--line); }
.feature-item i { width: 54px; height: 54px; display: grid; place-items: center; border-radius: 18px; background: linear-gradient(135deg, #ff3a23, #ff9e12); color: #fff; font-style: normal; font-size: 24px; }
.feature-item strong { display: block; color: #9a1906; margin-bottom: 4px; }
.feature-item span { display: block; color: var(--muted); font-size: 14px; }
.visual-card { min-height: 410px; padding: 24px; display: grid; place-items: center; overflow: hidden; background: linear-gradient(135deg, rgba(255,255,255,.78), rgba(255,226,187,.92)); }
.visual-card img { width: 100%; max-width: 560px; filter: drop-shadow(0 24px 36px rgba(255, 97, 0, .18)); }

/* 下载区 */
.download-section { padding-top: 42px; }
.download-card {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 330px;
  gap: 38px;
  align-items: center;
  padding: clamp(32px, 5vw, 60px);
  border-radius: 44px;
  background:
    radial-gradient(circle at 20% 10%, rgba(255,255,255,.36), transparent 28%),
    linear-gradient(135deg, #d30707, #ff3a16 42%, #ff9a18 100%);
  color: #fff;
  box-shadow: 0 32px 90px rgba(240, 48, 12, .28);
}
.download-card::after { content: ""; position: absolute; right: -100px; top: -130px; width: 310px; height: 310px; border-radius: 50%; background: rgba(255,255,255,.16); }
.download-copy { position: relative; z-index: 2; }
.download-copy span { display: inline-block; font-weight: 950; letter-spacing: .18em; color: rgba(255,255,255,.76); margin-bottom: 14px; }
.download-copy h2 { margin: 0; font-size: clamp(34px, 4.8vw, 58px); line-height: 1.08; letter-spacing: -.06em; }
.download-copy p { margin: 20px 0 0; max-width: 720px; color: rgba(255,255,255,.86); line-height: 1.9; }
.download-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.download-tags em { font-style: normal; padding: 10px 14px; border-radius: 999px; background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.2); font-weight: 800; }
.qr-card { position: relative; z-index: 3; padding: 22px; border-radius: 30px; background: rgba(255,255,255,.92); color: var(--ink); text-align: center; box-shadow: 0 24px 70px rgba(91, 15, 0, .18); }
.qr-card img { width: 210px; margin: 0 auto 18px; border-radius: 20px; }
.qr-card .primary-btn { width: 100%; min-height: 56px; font-size: 18px; }
.qr-card small { display: block; margin-top: 12px; color: var(--muted); line-height: 1.6; }

/* 联系我们 */
.contact-card { display: grid; grid-template-columns: 220px 1fr 1fr; gap: 28px; align-items: center; padding: 34px; }
.contact-logo { border-radius: 30px; padding: 18px; background: linear-gradient(135deg, #ff261f, #ff8d12); }
.contact-logo img { border-radius: 24px; box-shadow: 0 12px 28px rgba(0,0,0,.15); }
.contact-info h3 { margin: 0 0 18px; color: #93160a; font-size: 27px; }
.contact-info p, .contact-address p { color: var(--muted); line-height: 1.7; margin: 10px 0; }
.contact-address { padding-left: 28px; border-left: 1px solid var(--line); }
.contact-address strong { color: #93160a; }

/* 页脚 */
.site-footer { margin-top: 34px; padding: 48px 0 26px; color: #fff; background: linear-gradient(180deg, #b50908, #8d0404); }
.footer-company { text-align: center; padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,.2); }
.footer-company h2 { margin: 0 0 12px; font-size: 30px; }
.footer-company p { margin: 0; color: rgba(255,255,255,.82); line-height: 1.7; }
.footer-records { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; padding: 26px 0; border-bottom: 1px solid rgba(255,255,255,.15); }
.footer-records a { min-height: 54px; display: flex; align-items: center; justify-content: center; text-align: center; padding: 0 12px; color: rgba(255,255,255,.78); border-right: 1px solid rgba(255,255,255,.16); font-size: 14px; line-height: 1.5; }
.footer-records a:last-child { border-right: 0; }
.footer-records a:hover { color: #fff; }
.copyright { padding-top: 22px; text-align: center; color: rgba(255,255,255,.74); font-size: 13px; }

/* 下载弹窗 */
.modal-mask {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(54, 8, 2, .66);
  backdrop-filter: blur(12px);
}
.modal-mask.active { display: flex; }
.download-modal {
  position: relative;
  width: min(430px, 100%);
  padding: 30px 28px 28px;
  border-radius: 34px;
  text-align: center;
  background: linear-gradient(180deg, #fffdf8, #fff3e2);
  box-shadow: 0 32px 90px rgba(61, 4, 0, .36);
  border: 1px solid rgba(255,255,255,.82);
}
.modal-close {
  position: absolute;
  right: 18px;
  top: 16px;
  width: 38px;
  height: 38px;
  border: 0;
  border-radius: 999px;
  background: #fff3e1;
  color: #9a1906;
  font-size: 24px;
  cursor: pointer;
}
.modal-icon { width: 72px; height: 72px; margin: 0 auto 14px; border-radius: 18px; box-shadow: 0 10px 26px rgba(255, 102, 0, .24); }
.download-modal h3 { margin: 0; font-size: 28px; color: #8d1209; }
.download-modal p { margin: 10px 0 18px; color: var(--muted); }
.modal-qr { width: 240px; margin: 0 auto; border-radius: 20px; box-shadow: 0 12px 28px rgba(99, 25, 0, .12); }
.modal-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 18px; color: #9d4f2e; font-size: 12px; font-weight: 800; }

/* 设计标注模式 */
.label-toggle {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 120;
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  color: #fff;
  background: #231411;
  box-shadow: 0 16px 34px rgba(0,0,0,.24);
  cursor: pointer;
  font-weight: 800;
}
body.show-labels [data-element] { position: relative; outline: 2px dashed rgba(0, 136, 255, .78); outline-offset: 3px; }
body.show-labels [data-element]::before {
  content: attr(data-element);
  position: absolute;
  left: 0;
  top: -28px;
  z-index: 200;
  max-width: 260px;
  padding: 4px 8px;
  border-radius: 8px;
  color: #fff;
  background: rgba(0, 92, 180, .94);
  font-size: 12px;
  line-height: 1.35;
  white-space: nowrap;
  pointer-events: none;
}
body.show-labels .modal-mask:not(.active)::before { display: none; }

@media (max-width: 980px) {
  .hero-grid, .about-layout, .download-card, .contact-card { grid-template-columns: 1fr; }
  .hero-visual { min-height: 450px; }
  .phone-mockup { right: 10%; }
  .icon-showcase { left: 8%; }
  .contact-address { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); padding-top: 18px; }
  .footer-records { grid-template-columns: 1fr 1fr; }
  .footer-records a { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.12); }
}
@media (max-width: 720px) {
  .container { width: min(var(--max), calc(100% - 28px)); }
  .header-inner { height: 68px; }
  .nav { display: none; }
  .brand-text em { display: none; }
  .nav-cta { padding: 10px 16px; }
  .hero-section { min-height: auto; padding: 58px 0 120px; }
  .hero-visual { display: none; }
  .hero-actions { display: grid; }
  .primary-btn, .ghost-btn { width: 100%; }
  .section { padding: 60px 0; }
  .feature-panel { padding: 24px; }
  .download-card { border-radius: 30px; }
  .footer-records { grid-template-columns: 1fr; }
}