/* 椰城天幕 · 统一视觉系统 */
:root{
  --bg:#070d1a; --bg2:#0b1220; --card:#111c31; --card2:#16233c;
  --line:#243352; --txt:#e9eefa; --dim:#9dabc6; --gold:#f0b95c; --gold2:#ffd18a;
  --blue:#5fb3ff; --green:#4ddba0; --radius:16px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  background:var(--bg); color:var(--txt); line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}

/* ---------- 顶部导航 ---------- */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(7,13,26,.82); backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.hd{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;flex-wrap:wrap}
.logo{font-size:24px;font-weight:800;letter-spacing:2px;display:flex;align-items:baseline;gap:10px}
.logo em{color:var(--gold);font-style:normal}
.logo small{font-size:12px;color:var(--dim);letter-spacing:1px;font-weight:500}
nav{display:flex;gap:26px;align-items:center;flex-wrap:wrap}
nav a{color:var(--dim);font-size:15px;position:relative;padding:4px 0;transition:.25s}
nav a:hover{color:var(--gold)}
nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--gold);transition:.25s}
nav a:hover::after{width:100%}
.nav-cta{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#201703!important;font-weight:700;
  padding:8px 18px;border-radius:999px;font-size:14px}
.nav-cta::after{display:none}
nav a.nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(240,185,92,.35)}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;text-align:center;
  padding:96px 20px 78px;
  background:
    radial-gradient(1000px 500px at 50% -10%, rgba(95,179,255,.16), transparent 60%),
    radial-gradient(700px 400px at 80% 20%, rgba(240,185,92,.12), transparent 60%),
    linear-gradient(180deg,#0a1526 0%,var(--bg) 100%);
  background-color:var(--bg2);
}
.hero::before{ /* 星空 */
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.85;
  background-image:
    radial-gradient(1.4px 1.4px at 12% 22%, #fff 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 28% 62%, #cfe3ff 50%, transparent 51%),
    radial-gradient(1.6px 1.6px at 45% 12%, #fff 50%, transparent 51%),
    radial-gradient(1.1px 1.1px at 62% 48%, #ffe9c2 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 78% 30%, #fff 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 88% 66%, #cfe3ff 50%, transparent 51%),
    radial-gradient(1.3px 1.3px at 35% 82%, #fff 50%, transparent 51%),
    radial-gradient(1.1px 1.1px at 70% 86%, #ffe9c2 50%, transparent 51%),
    radial-gradient(1.4px 1.4px at 20% 45%, #fff 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 55% 70%, #cfe3ff 50%, transparent 51%);
  animation:twinkle 4.5s ease-in-out infinite alternate;
}
@keyframes twinkle{from{opacity:.45}to{opacity:.95}}

/* 悬空的飞天屏示意 */
.screen{
  width:210px;height:120px;margin:0 auto 34px;border-radius:10px;
  background:linear-gradient(160deg,#1b2c4d,#0e1a30);
  border:2px solid rgba(240,185,92,.55);
  box-shadow:0 0 60px rgba(240,185,92,.28), inset 0 0 40px rgba(95,179,255,.18);
  display:flex;align-items:center;justify-content:center;
  animation:float 5.5s ease-in-out infinite;position:relative;
}
.screen::after{
  content:"";position:absolute;top:-26px;left:50%;transform:translateX(-50%);
  width:120px;height:3px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);
}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

/* 首屏实拍图 */
.screen-photo{margin:0 auto 30px;width:fit-content;position:relative;animation:float 5.5s ease-in-out infinite}
.screen-photo img{
  width:min(240px,60vw);height:330px;object-fit:cover;object-position:50% 32%;
  border-radius:14px;border:2px solid rgba(240,185,92,.55);
  box-shadow:0 0 60px rgba(240,185,92,.28), 0 24px 60px rgba(0,0,0,.5);display:block;
}
.screen-photo::before{
  content:"";position:absolute;top:-24px;left:50%;transform:translateX(-50%);
  width:110px;height:3px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
}
.screen-photo figcaption{margin-top:10px;font-size:12px;color:var(--dim);letter-spacing:2px}

/* 实拍图集 */
.shots{
  display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
  max-width:960px;margin:48px auto 0;padding:0 20px;
}
.shots figure{margin:0}
.shots img{
  width:100%;height:300px;object-fit:cover;object-position:50% 30%;
  border-radius:14px;border:1px solid var(--line);display:block;
  transition:transform .3s ease, box-shadow .3s ease;
}
.shots figure:nth-child(3) img{object-position:50% 60%}
.shots figure:hover img{transform:translateY(-6px);box-shadow:0 18px 44px rgba(0,0,0,.5)}
.shots figcaption{margin-top:8px;font-size:12px;color:var(--dim);text-align:center;letter-spacing:1px}
@media (max-width:760px){
  .shots{grid-template-columns:1fr;max-width:420px}
  .shots img{height:340px}
}

.hero h1{
  font-size:clamp(30px,5.4vw,50px);font-weight:900;letter-spacing:3px;line-height:1.35;
  background:linear-gradient(120deg,#ffffff 20%,var(--gold2) 60%,var(--gold) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .sub{color:var(--dim);font-size:clamp(14px,2.2vw,18px);margin-top:18px;max-width:720px;margin-inline:auto}
.btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:999px;
  font-weight:700;font-size:15.5px;transition:.25s;
}
.btn-main{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#201703;box-shadow:0 10px 26px rgba(240,185,92,.28)}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(240,185,92,.42)}
.btn-ghost{border:1px solid var(--line);color:var(--txt);background:rgba(255,255,255,.04)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;background:var(--card);margin-top:54px;box-shadow:var(--shadow)}
.stat{padding:22px 14px;text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat b{display:block;font-size:clamp(20px,3vw,28px);color:var(--gold);font-weight:900;letter-spacing:1px}
.stat span{font-size:13px;color:var(--dim)}

/* ---------- 区块 ---------- */
section{padding:72px 0 0}
.eyebrow{color:var(--gold);font-size:13px;font-weight:700;letter-spacing:3px;margin-bottom:10px}
h2{font-size:clamp(22px,3.4vw,30px);font-weight:800;margin-bottom:8px;letter-spacing:1px}
.lead{color:var(--dim);font-size:15.5px;max-width:760px;margin-bottom:26px}

/* 卡片 */
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{
  background:linear-gradient(160deg,var(--card2),var(--card));
  border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  transition:.28s;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-5px);border-color:rgba(240,185,92,.5);box-shadow:var(--shadow)}
.card h3{font-size:17px;margin-bottom:10px;color:#fff}
.card p{color:var(--dim);font-size:14.5px}
.card .ico{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:20px;margin-bottom:14px;background:rgba(95,179,255,.12);border:1px solid rgba(95,179,255,.25)}

/* 规格表 */
.spec{display:grid;grid-template-columns:repeat(2,1fr);gap:12px 18px;margin-top:6px}
.spec div{display:flex;justify-content:space-between;gap:12px;padding:13px 16px;background:var(--card);
  border:1px solid var(--line);border-radius:12px;font-size:14.5px}
.spec span{color:var(--dim);white-space:nowrap}
.spec b{color:var(--txt);font-weight:600;text-align:right}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:s}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;position:relative}
.step::before{
  counter-increment:s;content:counter(s);
  position:absolute;top:-14px;left:20px;width:30px;height:30px;border-radius:50%;
  background:linear-gradient(135deg,var(--gold),var(--gold2));color:#201703;
  font-weight:900;display:flex;align-items:center;justify-content:center;font-size:15px;
  box-shadow:0 6px 16px rgba(240,185,92,.3)
}
.step h4{font-size:16px;margin-bottom:6px;color:#fff}
.step p{font-size:13.5px;color:var(--dim)}

/* 价格 */
.price{background:linear-gradient(160deg,var(--card2),var(--card));border:1px solid var(--line);
  border-radius:var(--radius);padding:28px 24px;transition:.28s;position:relative;text-align:center}
.price:hover{transform:translateY(-5px);border-color:rgba(240,185,92,.5);box-shadow:var(--shadow)}
.price .t{font-size:14px;color:var(--dim);letter-spacing:1px}
.price .v{font-size:26px;font-weight:900;color:var(--gold);margin:10px 0 6px;letter-spacing:1px}
.price .d{font-size:13.5px;color:var(--dim)}
.price.hot{border-color:rgba(240,185,92,.6);box-shadow:0 0 0 1px rgba(240,185,92,.25),var(--shadow)}
.price.hot::after{content:"最常选择";position:absolute;top:-12px;right:18px;background:linear-gradient(135deg,var(--gold),var(--gold2));
  color:#201703;font-size:12px;font-weight:800;padding:3px 12px;border-radius:999px}

/* 标签 */
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{background:rgba(95,179,255,.1);color:var(--blue);border:1px solid rgba(95,179,255,.22);
  border-radius:999px;padding:4px 14px;font-size:13px}

/* FAQ 折叠 */
.faqbox{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
details{border-bottom:1px solid var(--line)}
details:last-child{border-bottom:none}
summary{padding:18px 22px;cursor:pointer;font-weight:600;font-size:15.5px;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px;transition:.2s}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--gold);font-size:20px;font-weight:700;transition:.25s}
details[open] summary{background:rgba(240,185,92,.06);color:var(--gold)}
details[open] summary::after{transform:rotate(45deg)}
details p{padding:0 22px 20px;color:var(--dim);font-size:14.5px}

/* 案例卡 */
.case{
  background:linear-gradient(160deg,var(--card2),var(--card));
  border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;
  margin-bottom:16px;transition:.28s;
}
.case:hover{transform:translateY(-4px);border-color:rgba(240,185,92,.5);box-shadow:var(--shadow)}
.case h2{font-size:19px;margin-bottom:8px;color:#fff}
.case p{color:var(--dim);font-size:14.5px}
.case-photo{margin:14px 0 0}
.case-photo img{width:100%;height:220px;object-fit:cover;object-position:50% 60%;border-radius:12px;border:1px solid var(--line);display:block}
.case-photo figcaption{margin-top:8px;font-size:12px;color:var(--dim);letter-spacing:1px}
.badge{display:inline-block;background:rgba(95,179,255,.12);color:var(--blue);
  border:1px solid rgba(95,179,255,.25);border-radius:999px;padding:2px 12px;font-size:12.5px;margin-bottom:10px}

/* 提示条 */
.note{background:rgba(95,179,255,.07);border-left:3px solid var(--blue);border-radius:8px;
  padding:12px 16px;color:var(--dim);font-size:13.5px;margin-top:14px}
.warn{background:rgba(255,193,7,.07);border-left:3px solid var(--gold);border-radius:8px;
  padding:14px 18px;color:var(--dim);font-size:13.5px;margin-top:16px}

/* 联系 */
.contact{background:linear-gradient(135deg,rgba(240,185,92,.1),rgba(95,179,255,.08));
  border:1px solid rgba(240,185,92,.3);border-radius:var(--radius);padding:34px}
.contact .tel{font-size:clamp(26px,4.4vw,38px);font-weight:900;color:var(--gold);letter-spacing:2px}

/* 页脚 */
footer{margin-top:80px;border-top:1px solid var(--line);padding:38px 0;color:var(--dim);font-size:13.5px;
  background:linear-gradient(180deg,transparent,rgba(0,0,0,.25))}
.fgrid{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
footer b{color:var(--txt);font-size:14.5px}

/* 响应式 */
@media(max-width:900px){
  .g3,.g4,.g2,.steps,.stats,.spec{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
}
@media(max-width:600px){
  .hero{padding:70px 18px 56px}
  .g3,.g4,.g2,.steps,.spec{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .hd{justify-content:center;text-align:center}
  nav{gap:16px;justify-content:center}
  section{padding:52px 0 0}
}