/* =========================================================
   ATOMIC Soundcore · 原子悦音  —  AS-200 专属官网
   ========================================================= */

:root{
  --bg:#050507;
  --bg2:#08080b;
  --surface:#0e0e13;
  --line:rgba(255,255,255,.09);
  --ink:#EDEDF2;
  --muted:#82828F;
  --blue:#4D8DFF;
  --amber:#FFB454;
  --ease:cubic-bezier(.22,.75,.24,1);
  --ff:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ff-en:"SF Pro Display","Segoe UI",system-ui,-apple-system,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--ink); font-family:var(--ff);
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
  line-height:1.65;
}
img{display:block; max-width:100%}
a{color:inherit; text-decoration:none}
::selection{background:rgba(77,141,255,.35)}

/* ---------- 背景 & 质感 ---------- */
#bgCanvas{position:fixed; inset:0; width:100%; height:100%; z-index:0; pointer-events:none; opacity:.85}
.grain{
  position:fixed; inset:0; z-index:2; pointer-events:none; opacity:.055; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/></filter><rect width='140' height='140' filter='url(%23n)' opacity='0.65'/></svg>");
}
.vignette{
  position:fixed; inset:0; z-index:1; pointer-events:none;
  background:radial-gradient(ellipse 90% 70% at 50% 32%, transparent 40%, rgba(0,0,0,.72) 100%);
}
#cursorGlow{
  position:fixed; width:520px; height:520px; border-radius:50%; z-index:0; pointer-events:none;
  left:0; top:0; transform:translate(-50%,-50%);
  background:radial-gradient(circle, rgba(77,141,255,.10), transparent 62%);
  transition:opacity .5s; opacity:0;
}

/* ---------- 开场 ---------- */
#preloader{
  position:fixed; inset:0; z-index:999; background:#040406;
  display:flex; align-items:center; justify-content:center;
  transition:opacity .8s var(--ease), visibility .8s;
}
#preloader.done{opacity:0; visibility:hidden}
.pre-inner{text-align:center}
.pre-mark{position:relative; width:96px; height:96px; margin:0 auto 26px}
.pre-mark .nucleus{
  position:absolute; left:50%; top:50%; width:16px; height:16px; margin:-8px 0 0 -8px;
  border-radius:50%; background:var(--blue);
  box-shadow:0 0 30px 6px rgba(77,141,255,.7);
  animation:nucleusPulse 1.6s ease-in-out infinite;
}
@keyframes nucleusPulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(.7);opacity:.6}}
.pre-mark .orbit{
  position:absolute; inset:0; border-radius:50%; border:1px solid rgba(77,141,255,.45);
  border-top-color:var(--blue); animation:spin 1.5s linear infinite;
}
.pre-mark .orbit.o1{transform:rotate(0deg) scaleX(.45)}
.pre-mark .orbit.o2{transform:rotate(60deg) scaleX(.45); animation-duration:2.1s; animation-direction:reverse; border-top-color:var(--amber); border-color:rgba(255,180,84,.3)}
@keyframes spin{to{transform:rotate(360deg)}}

.pre-name{
  font-family:var(--ff-en); font-size:26px; font-weight:800; letter-spacing:.42em;
  margin-bottom:6px;
}
.pre-name span{
  display:block; font-size:10px; letter-spacing:.62em; color:var(--muted);
  margin-top:8px; font-weight:500;
}
.pre-bar{
  width:190px; height:2px; background:rgba(255,255,255,.12); margin:26px auto 14px; overflow:hidden;
}
.pre-bar i{display:block; height:100%; width:0; background:linear-gradient(90deg,var(--blue),var(--amber)); transition:width .3s linear}
.pre-hint{font-size:11px; letter-spacing:.3em; color:#55555f}

/* ---------- 导航 ---------- */
#nav{
  position:fixed; top:0; left:0; right:0; z-index:60;
  display:flex; align-items:center; justify-content:space-between;
  padding:20px 5vw; transition:background .4s, backdrop-filter .4s, border-color .4s, padding .4s;
  border-bottom:1px solid transparent;
}
#nav.scrolled{
  background:rgba(8,8,11,.72); backdrop-filter:blur(18px) saturate(140%);
  border-bottom-color:var(--line); padding:14px 5vw;
}
.logo{display:flex; align-items:center; gap:11px}
.logo-orb{
  width:15px; height:15px; border-radius:50%;
  background:radial-gradient(circle at 35% 30%, #9dc0ff, var(--blue) 60%, #1b3f7a);
  box-shadow:0 0 16px rgba(77,141,255,.75); position:relative;
}
.logo-orb::after{
  content:""; position:absolute; inset:-6px; border-radius:50%;
  border:1px solid rgba(77,141,255,.35); transform:scaleX(.4) rotate(35deg);
  animation:spin 5s linear infinite;
}
.logo-txt{font-family:var(--ff-en); font-weight:800; font-size:15px; letter-spacing:.22em}
.logo-txt em{font-style:normal; font-weight:400; color:var(--muted); letter-spacing:.16em; margin-left:7px; font-size:12px}
.links{display:flex; gap:34px; font-size:13.5px; letter-spacing:.08em}
.links a{color:#A8A8B4; transition:color .25s; position:relative}
.links a::after{
  content:""; position:absolute; left:0; bottom:-6px; width:0; height:1px;
  background:var(--blue); transition:width .3s var(--ease);
}
.links a:hover{color:var(--ink)}
.links a:hover::after{width:100%}
.nav-cta{
  font-size:12.5px; letter-spacing:.14em; padding:9px 20px; border-radius:99px;
  border:1px solid rgba(255,255,255,.18); transition:.3s;
}
.nav-cta:hover{background:var(--ink); color:#050507; border-color:var(--ink)}

/* ---------- HERO（全屏 3D） ---------- */
main{position:relative; z-index:3}
.hero{
  position:relative; height:100vh; min-height:620px; overflow:hidden;
  display:flex; flex-direction:column; align-items:center;
  text-align:center; padding:104px 5vw 34px;
}
.hero-3dwrap{position:absolute; inset:0; z-index:0}
#hero3d{width:100%; height:100%; display:block; cursor:grab; touch-action:none}
#hero3d:active{cursor:grabbing}
.hero-vignette{
  position:absolute; inset:0; pointer-events:none;
  background:
    radial-gradient(ellipse 72% 58% at 50% 46%, transparent 42%, rgba(5,5,7,.82) 100%),
    linear-gradient(180deg, rgba(5,5,7,.85) 0%, transparent 22%, transparent 72%, rgba(5,5,7,.9) 100%);
}
.hero-copy{max-width:1000px; position:relative; z-index:2; pointer-events:none}
.eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  font-size:11px; letter-spacing:.3em; color:var(--muted); margin-bottom:18px;
}
.eyebrow i{
  width:5px; height:5px; border-radius:50%; background:var(--blue);
  box-shadow:0 0 10px var(--blue);
}
.hero-title{
  font-family:var(--ff-en); font-size:clamp(32px,5.2vw,74px);
  font-weight:800; line-height:1.04; letter-spacing:-.025em;
}
.hero-title .line{display:block; overflow:hidden}
.hero-title em{
  font-style:normal;
  background:linear-gradient(100deg,#fff 10%,var(--blue) 55%,var(--amber) 95%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero-meta{position:relative; z-index:2; pointer-events:none; margin-top:auto}
.hero-sub{
  margin-top:0; color:#9A9AA6; font-size:clamp(12.5px,1.32vw,15px); line-height:1.9;
}
.hero-actions{
  position:relative; z-index:3; display:flex; gap:10px; flex-wrap:wrap;
  justify-content:center; margin-top:18px;
}
.hbtn{
  font-family:var(--ff); font-size:12px; letter-spacing:.14em; cursor:pointer;
  padding:10px 22px; border-radius:99px; transition:.3s;
  background:rgba(255,255,255,.05); border:1px solid var(--line); color:#C2C2CE;
}
.hbtn:hover{background:rgba(255,255,255,.1); color:#fff; border-color:rgba(255,255,255,.3)}
.hbtn-main{
  background:linear-gradient(100deg,rgba(77,141,255,.22),rgba(255,180,84,.14));
  border-color:rgba(77,141,255,.5); color:#CFE0FF;
}
.hbtn-main:hover{
  background:linear-gradient(100deg,rgba(77,141,255,.36),rgba(255,180,84,.22));
  border-color:rgba(77,141,255,.85); color:#fff;
  box-shadow:0 0 30px rgba(77,141,255,.4);
}
.hero-badges{
  display:flex; gap:9px; justify-content:center; flex-wrap:wrap; margin-top:22px;
}
.hero-badges span{
  font-size:11px; letter-spacing:.13em; color:#B6B6C2;
  padding:6px 14px; border-radius:99px; border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}

/* 产品 3D 舞台 */
.hero-stage{
  position:relative; width:min(1120px,90vw); margin:14px 0 4px;
  aspect-ratio: 1120 / 440;
  perspective:1400px; perspective-origin:50% 46%;
}
/* 真 3D 画布 */
.prod-3d{ position:absolute; inset:0; }
#hero3d{
  position:absolute; inset:0; width:100%; height:100%; display:block;
  cursor:grab; touch-action:none;
}
#hero3d:active{ cursor:grabbing; }

/* 展台 */
.stage-disc{
  position:absolute; left:50%; bottom:-2%; width:70%; height:44px;
  transform:translateX(-50%); border-radius:50%;
  background:radial-gradient(ellipse at 50% 50%, rgba(77,141,255,.34), rgba(77,141,255,.06) 58%, transparent 74%);
  filter:blur(12px); z-index:-1;
}
.stage-rings{
  position:absolute; left:50%; bottom:-16px; width:78%; height:110px;
  transform:translateX(-50%); z-index:-1; pointer-events:none;
}
.stage-rings i{
  position:absolute; left:50%; top:50%; width:100%; height:100%;
  transform:translate(-50%,-50%) rotateX(76deg);
  border-radius:50%; border:1px solid rgba(77,141,255,.20);
}
.stage-rings i:nth-child(1){ animation:ringPulse2 4.5s ease-in-out infinite; }
.stage-rings i:nth-child(2){ width:74%; height:74%; border-color:rgba(255,180,84,.16);
  animation:ringPulse2 4.5s ease-in-out infinite .6s; }
.stage-rings i:nth-child(3){ width:48%; height:48%; border-color:rgba(255,255,255,.10);
  animation:ringPulse2 4.5s ease-in-out infinite 1.2s; }
@keyframes ringPulse2{
  0%,100%{ opacity:.45; } 50%{ opacity:1; }
}

.replay{
  position:absolute; right:2%; bottom:-26px; z-index:5;
  font-size:11px; letter-spacing:.16em; color:#9A9AA6; cursor:pointer;
  background:rgba(255,255,255,.04); border:1px solid var(--line);
  border-radius:99px; padding:7px 16px; transition:.3s; font-family:var(--ff);
}
.replay:hover{ color:#fff; border-color:rgba(77,141,255,.55); background:rgba(77,141,255,.12); }
.prod-img{
  width:100%; display:block;
  filter:contrast(1.08) brightness(1.06) saturate(1.05);
  transform:translateZ(0);
}
.prod-glow{
  position:absolute; left:50%; top:56%; width:74%; height:56%;
  transform:translate(-50%,-50%); border-radius:50%;
  background:radial-gradient(ellipse, rgba(77,141,255,.34), transparent 66%);
  filter:blur(52px); z-index:-1;
}
.prod-sheen{
  position:absolute; inset:0; pointer-events:none; overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 18%,#000 82%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 18%,#000 82%,transparent);
}
.prod-sheen::after{
  content:""; position:absolute; top:-40%; left:-60%; width:38%; height:180%;
  background:linear-gradient(100deg, transparent, rgba(255,255,255,.30), transparent);
  transform:rotate(12deg); animation:sheen 4.6s ease-in-out infinite;
}
@keyframes sheen{
  0%{left:-60%} 55%,100%{left:125%}
}
.hero-floor{
  position:absolute; left:50%; bottom:-6%; width:70%; height:80px;
  transform:translateX(-50%); border-radius:50%;
  background:radial-gradient(ellipse, rgba(77,141,255,.22), transparent 70%);
  filter:blur(30px);
}

.scroll-cue{
  position:absolute; bottom:20px; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:10px;
  font-size:10px; letter-spacing:.42em; color:#5F5F6C;
}
.scroll-cue i{
  width:1px; height:42px; background:linear-gradient(var(--blue), transparent);
  animation:cue 2s ease-in-out infinite;
}
@keyframes cue{0%,100%{opacity:.25; transform:scaleY(.6)}50%{opacity:1; transform:scaleY(1)}}

/* ---------- 通用区块 ---------- */
.sec{padding:clamp(90px,13vh,160px) 5vw; position:relative}
.sec-head{max-width:820px; margin-bottom:clamp(46px,7vh,80px)}
.sec-no{
  font-family:var(--ff-en); font-size:12px; letter-spacing:.4em; color:var(--blue);
  margin-bottom:20px;
}
.sec-head h2, .about-left h2{
  font-size:clamp(28px,4.2vw,56px); font-weight:800; line-height:1.16; letter-spacing:-.02em;
}
.sec-head h2 em, .about-left h2 em, .contact-inner h2 em{
  font-style:normal;
  background:linear-gradient(100deg,#fff,var(--blue) 70%,var(--amber));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.sec-head p{margin-top:20px; color:var(--muted); font-size:15px; max-width:620px}

/* reveal 动画 */
.reveal{
  opacity:0; transform:translateY(30px);
  transition:opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal.in{opacity:1; transform:none}

/* ---------- 规格 ---------- */
.spec-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line); margin-bottom:clamp(50px,8vh,90px);
}
.spec{
  background:var(--bg2); padding:clamp(22px,3.4vw,40px) clamp(18px,2.4vw,34px);
  transition:background .4s;
}
.spec:hover{background:#101018}
.spec-k{
  font-family:var(--ff-en); font-size:clamp(34px,4.6vw,62px); font-weight:800;
  line-height:1; letter-spacing:-.03em;
  background:linear-gradient(160deg,#fff,#6d6d7a);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.spec-t{margin-top:14px; font-size:15px; font-weight:700; letter-spacing:.04em}
.spec-d{margin-top:9px; font-size:12.5px; color:var(--muted); line-height:1.7}

/* ---------- 大图 ---------- */
.big-figure, .detail-fig, .duo-fig{
  position:relative; border:1px solid var(--line); background:#050507;
  padding:clamp(16px,2.6vw,34px); overflow:hidden;
}
.big-figure img, .detail-fig img, .duo-fig img{
  width:100%; display:block;
  filter:contrast(1.07) brightness(1.05);
}
.big-figure::before, .detail-fig::before, .duo-fig::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(180deg, rgba(5,5,7,.35), transparent 22%, transparent 80%, rgba(5,5,7,.5));
}
figcaption{
  display:flex; align-items:center; gap:12px; margin-top:18px;
  font-size:12px; color:var(--muted); letter-spacing:.04em;
}
.cap-no{
  font-family:var(--ff-en); font-size:10.5px; letter-spacing:.26em; color:var(--blue);
  border:1px solid rgba(77,141,255,.35); border-radius:3px; padding:2px 7px;
}

/* ---------- 细节 ---------- */
.detail-row{
  display:grid; grid-template-columns:1.15fr .85fr; gap:clamp(24px,4vw,56px);
  align-items:center; margin-bottom:clamp(40px,6vh,70px);
}
.detail-list{display:flex; flex-direction:column; gap:26px}
.d-item{border-left:1px solid rgba(77,141,255,.4); padding-left:20px}
.d-item h4{font-size:16px; font-weight:700; letter-spacing:.03em; margin-bottom:7px}
.d-item p{font-size:13px; color:var(--muted); line-height:1.75}
.detail-duo{display:grid; grid-template-columns:1.35fr .85fr; gap:clamp(20px,3vw,40px)}

/* ---------- 生态 ---------- */
.eco-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:clamp(14px,2vw,24px)}
.eco-card{
  border:1px solid var(--line); background:linear-gradient(165deg,#0e0e14,#08080c);
  padding:clamp(24px,3.4vw,40px); position:relative; overflow:hidden;
  transition:transform .5s var(--ease), border-color .4s, background .4s;
}
.eco-card::after{
  content:""; position:absolute; inset:0; opacity:0; transition:opacity .5s;
  background:radial-gradient(circle at 50% 0%, rgba(77,141,255,.16), transparent 68%);
}
.eco-card:hover{transform:translateY(-6px); border-color:rgba(77,141,255,.42)}
.eco-card:hover::after{opacity:1}
.eco-tag{
  display:inline-block; font-family:var(--ff-en); font-size:10px; letter-spacing:.26em;
  color:var(--amber); border:1px solid rgba(255,180,84,.4); border-radius:3px; padding:3px 8px;
  margin-bottom:22px; position:relative; z-index:1;
}
.eco-card h3{font-size:clamp(18px,2.2vw,25px); font-weight:700; letter-spacing:.01em; position:relative; z-index:1}
.eco-ver{font-family:var(--ff-en); font-size:12px; color:var(--blue); letter-spacing:.14em; margin-top:6px; position:relative; z-index:1}
.eco-card p{margin-top:16px; font-size:13px; color:var(--muted); line-height:1.8; position:relative; z-index:1}

/* ---------- 关于 ---------- */
.about-wrap{display:grid; grid-template-columns:.9fr 1.1fr; gap:clamp(30px,6vw,90px); align-items:start}
.about-right p{color:#9C9CA8; font-size:14.5px; line-height:2; margin-bottom:20px}
.about-right .lead{color:#D6D6DE; font-size:16px; line-height:1.95}
.about-stats{display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); margin-top:36px}
.about-stats > div{background:var(--bg2); padding:20px 18px}
.about-stats b{display:block; font-size:13.5px; letter-spacing:.04em; margin-bottom:5px}
.about-stats span{font-size:11.5px; color:var(--muted); letter-spacing:.06em}

/* ---------- 联系 ---------- */
.sec-contact{padding-bottom:clamp(80px,12vh,140px)}
.contact-inner{
  text-align:center; border:1px solid var(--line); padding:clamp(50px,9vw,110px) 6vw;
  background:radial-gradient(ellipse 70% 100% at 50% 0%, rgba(77,141,255,.09), transparent 70%), #07070a;
  position:relative; overflow:hidden;
}
.contact-inner .eyebrow{justify-content:center}
.contact-inner h2{font-size:clamp(28px,4.6vw,60px); font-weight:800; letter-spacing:-.02em}
.contact-inner p{margin-top:18px; color:var(--muted); font-size:14px}
.mail{
  display:inline-block; margin-top:36px; font-family:var(--ff-en);
  font-size:clamp(16px,2.4vw,30px); font-weight:700; letter-spacing:.02em;
  padding-bottom:8px; border-bottom:1px solid rgba(77,141,255,.5);
  transition:.35s;
}
.mail:hover{color:var(--blue); border-color:var(--blue); letter-spacing:.06em}

/* ---------- 页脚 ---------- */
footer{
  position:relative; z-index:3;
  display:flex; justify-content:space-between; align-items:flex-end; gap:20px; flex-wrap:wrap;
  padding:34px 5vw; border-top:1px solid var(--line);
  font-size:12px; color:#5F5F6C;
}
.foot-logo{font-family:var(--ff-en); font-weight:800; letter-spacing:.24em; color:#B9B9C6; margin-bottom:8px}
.foot-logo em{font-style:normal; font-weight:400; color:#5F5F6C; letter-spacing:.14em; font-size:11px; margin-left:6px}
.foot-right{display:flex; align-items:center; gap:10px; flex-wrap:wrap}
.foot-right a{color:#9A9AA6; transition:color .25s}
.foot-right a:hover{color:var(--blue)}
.dot{opacity:.5}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .detail-row{grid-template-columns:1fr}
  .detail-duo{grid-template-columns:1fr 1fr}
  .about-wrap{grid-template-columns:1fr; gap:34px}
}
@media (max-width:860px){
  .links{display:none}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .eco-grid{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr}
  .hero{padding-top:110px}
  .prod-3d{transform:rotateY(-60deg) rotateX(10deg) scale(.9) translateY(24px)}
  .detail-duo{grid-template-columns:1fr}
  footer{flex-direction:column; align-items:flex-start}
}
@media (max-width:520px){
  .spec-grid{grid-template-columns:1fr}
  .hero-badges span{font-size:10.5px; padding:6px 12px}
}

/* 尊重系统减弱动效 */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important; transition-duration:.01ms!important}
  .prod-3d{transform:none!important; opacity:1!important}
}

/* =========================================================
   内页 / 表单 / 后台
   ========================================================= */
.page-hero{padding:150px 5vw 20px; max-width:1200px; margin:0 auto}
.page-hero h1{font-size:clamp(34px,5.4vw,72px); font-weight:800; letter-spacing:-.025em; line-height:1.08}
.page-hero h1 em{font-style:normal; background:linear-gradient(100deg,#fff,var(--blue) 65%,var(--amber));
  -webkit-background-clip:text; background-clip:text; color:transparent}
.page-sub{margin-top:14px; color:var(--muted); font-size:15px; max-width:640px}
.links a.active{color:#fff}
.links a.active::after{width:100%}
.visit{margin-top:26px; font-size:12px; letter-spacing:.12em; color:#5F5F6C}
.visit b{color:#B9B9C6; font-weight:600}
.eco-link{display:inline-block; margin-top:16px; font-size:12.5px; color:var(--blue);
  letter-spacing:.06em; position:relative; z-index:1}

/* 联系页 */
.contact-grid{display:grid; grid-template-columns:.8fr 1.2fr; gap:clamp(30px,5vw,70px);
  max-width:1100px; margin:0 auto; align-items:start}
.contact-info h3{font-size:16px; margin-bottom:18px; letter-spacing:.04em}
.contact-info .mail{font-size:clamp(15px,1.9vw,22px); margin-top:0}
.contact-info p{margin-top:14px; color:var(--muted); font-size:13.5px}
.contact-info .muted{color:#5F5F6C; font-size:12.5px}
.contact-form-wrap{border:1px solid var(--line); background:#08080c; padding:clamp(24px,3.4vw,40px)}
.contact-form-wrap h3{font-size:17px; margin-bottom:22px; letter-spacing:.04em}
.cform label{display:block; margin-bottom:18px; font-size:12.5px; color:#9A9AA6; letter-spacing:.06em}
.cform input,.cform textarea{
  display:block; width:100%; margin-top:8px; padding:12px 14px; font-family:var(--ff); font-size:14px;
  color:var(--ink); background:rgba(255,255,255,.035); border:1px solid var(--line);
  border-radius:6px; outline:none; transition:.25s; resize:vertical;
}
.cform input:focus,.cform textarea:focus{border-color:rgba(77,141,255,.55); background:rgba(77,141,255,.05)}
.btn-main{
  display:inline-block; padding:12px 30px; border-radius:99px; border:none; cursor:pointer;
  background:linear-gradient(100deg,var(--blue),#7aa8ff); color:#04070e; font-weight:800;
  font-size:13.5px; letter-spacing:.1em; font-family:var(--ff); transition:.3s;
  box-shadow:0 8px 30px rgba(77,141,255,.28);
}
.btn-main:hover{transform:translateY(-2px); box-shadow:0 12px 38px rgba(77,141,255,.42)}
.btn-line{display:inline-block; margin-left:12px; padding:11px 22px; border-radius:99px;
  border:1px solid var(--line); color:#B6B6C2; font-size:13px; letter-spacing:.08em; transition:.3s}
.btn-line:hover{border-color:rgba(77,141,255,.5); color:#fff}
.btn-line.sm{padding:6px 14px; font-size:11.5px; margin-left:0}
.form-err{padding:12px 16px; border:1px solid rgba(255,90,90,.35); background:rgba(255,90,90,.08);
  color:#FF9A9A; font-size:13px; border-radius:6px; margin-bottom:18px}
.form-ok{text-align:center; padding:20px 0}
.ok-mark{width:56px; height:56px; border-radius:50%; margin:0 auto 18px;
  background:rgba(77,141,255,.14); border:1px solid rgba(77,141,255,.5);
  color:var(--blue); font-size:26px; line-height:54px}
.form-ok h3{font-size:20px; margin-bottom:10px}
.form-ok p{color:var(--muted); font-size:14px; margin-bottom:24px}

/* ---------------- 后台 ---------------- */
.admin-body{background:#07070a; padding:0}
.login-box{
  max-width:360px; margin:14vh auto; padding:40px 34px; border:1px solid var(--line);
  background:#0a0a10; border-radius:14px; text-align:center;
}
.login-brand{font-family:var(--ff-en); font-weight:800; letter-spacing:.22em; font-size:14px; margin-bottom:6px}
.login-brand em{font-style:normal; font-weight:400; color:#5F5F6C; font-size:11px; margin-left:5px; letter-spacing:.14em}
.login-box h2{font-size:17px; font-weight:600; margin:22px 0 26px; letter-spacing:.06em; color:#C9C9D4}
.login-box input{
  display:block; width:100%; margin-bottom:14px; padding:12px 14px; font-family:var(--ff); font-size:14px;
  color:var(--ink); background:rgba(255,255,255,.04); border:1px solid var(--line); border-radius:6px; outline:none;
}
.login-box input:focus{border-color:rgba(77,141,255,.55)}
.login-box .btn-main{width:100%; margin-top:6px}
.login-hint{margin-top:20px; font-size:11px; color:#4E4E5A; line-height:1.7}

.admin-top{
  display:flex; align-items:center; justify-content:space-between; gap:18px; flex-wrap:wrap;
  padding:14px 3vw; border-bottom:1px solid var(--line); background:rgba(10,10,16,.85);
  backdrop-filter:blur(14px); position:sticky; top:0; z-index:50;
}
.admin-brand{font-family:var(--ff-en); font-weight:800; letter-spacing:.18em; font-size:13px}
.admin-brand em{font-style:normal; font-weight:400; color:#5F5F6C; font-size:10.5px; margin-left:4px}
.admin-brand span{color:#5F5F6C; font-size:11px; letter-spacing:.2em; margin-left:8px}
.admin-nav{display:flex; gap:6px; flex-wrap:wrap}
.admin-nav a{font-size:12.5px; padding:7px 15px; border-radius:99px; color:#9A9AA6; transition:.25s}
.admin-nav a:hover{color:#fff; background:rgba(255,255,255,.06)}
.admin-nav a.on{background:rgba(77,141,255,.16); color:#8FB6FF; border:1px solid rgba(77,141,255,.35)}
.admin-right{display:flex; align-items:center; gap:14px; font-size:11.5px; color:#5F5F6C}
.admin-right a{color:#9A9AA6}
.admin-right a:hover{color:var(--blue)}
.admin-wrap{max-width:1100px; margin:0 auto; padding:34px 3vw 80px}
.admin-h1{font-size:20px; font-weight:700; letter-spacing:.02em; margin-bottom:24px}
.admin-note{font-size:12.5px; color:#6B6B78; line-height:1.9; margin-top:24px;
  padding:16px 18px; border:1px solid var(--line); border-radius:8px; background:#09090e}
.admin-note code{color:#8FB6FF; font-size:12px}
.flash{margin:16px 3vw 0; padding:11px 18px; border-radius:8px; font-size:13px;
  background:rgba(77,141,255,.12); border:1px solid rgba(77,141,255,.35); color:#A9C6FF}
.stat-cards{display:grid; grid-template-columns:repeat(5,1fr); gap:1px; background:var(--line);
  border:1px solid var(--line); border-radius:8px; overflow:hidden}
.stat-card{background:#0b0b12; padding:24px 20px; text-align:center}
.stat-card b{display:block; font-family:var(--ff-en); font-size:26px; font-weight:800}
.stat-card span{display:block; margin-top:6px; font-size:11.5px; color:#6B6B78; letter-spacing:.08em}
.admin-form{border:1px solid var(--line); background:#0a0a10; padding:24px; border-radius:10px; margin-bottom:30px}
.admin-form label{display:block; margin-bottom:16px; font-size:12px; color:#8A8A96; letter-spacing:.05em}
.admin-form input[type=text],.admin-form input[type=number],.admin-form select,.admin-form textarea{
  display:block; width:100%; margin-top:7px; padding:10px 12px; font-family:var(--ff); font-size:13.5px;
  color:var(--ink); background:rgba(255,255,255,.04); border:1px solid var(--line); border-radius:6px;
  outline:none; transition:.2s;
}
.admin-form input:focus,.admin-form textarea:focus,.admin-form select:focus{border-color:rgba(77,141,255,.55)}
.admin-form .row2{display:grid; grid-template-columns:1fr 1fr; gap:16px}
.admin-form .cb{display:flex; align-items:center; gap:8px; font-size:13px}
.admin-form .cb input{width:auto; margin:0}
.admin-table{width:100%; border-collapse:collapse; font-size:13px}
.admin-table th{text-align:left; padding:11px 12px; font-size:11.5px; letter-spacing:.1em;
  color:#6B6B78; border-bottom:1px solid var(--line); font-weight:500}
.admin-table td{padding:12px; border-bottom:1px solid rgba(255,255,255,.05)}
.admin-table a{color:#8FB6FF; margin-right:12px}
.link-danger{background:none; border:none; color:#E06A6A; cursor:pointer; font-size:13px; font-family:var(--ff); padding:0}
.msg-card{border:1px solid var(--line); background:#0a0a10; border-radius:10px; padding:20px 22px; margin-bottom:14px}
.msg-card.unread{border-color:rgba(77,141,255,.4); background:#0b0e18}
.msg-head{display:flex; gap:14px; align-items:baseline; flex-wrap:wrap; margin-bottom:10px}
.msg-head b{font-size:14px}
.msg-contact{font-size:12px; color:var(--blue)}
.msg-time{font-size:11.5px; color:#55555f; margin-left:auto}
.msg-card p{font-size:13.5px; color:#B6B6C2; line-height:1.8}
.msg-actions{margin-top:12px; display:flex; gap:10px; align-items:center}

@media (max-width:860px){
  .contact-grid{grid-template-columns:1fr}
  .stat-cards{grid-template-columns:repeat(2,1fr)}
  .admin-form .row2{grid-template-columns:1fr}
  .page-hero{padding-top:120px}
}
/* 首屏 3D 加载占位 */
.stage-loading{
  position:absolute; inset:0; display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:14px; z-index:3;
  pointer-events:none; transition:opacity .45s;
}
.stage-loading.hide{opacity:0}
.ld-orb{
  width:14px; height:14px; border-radius:50%; background:var(--blue);
  box-shadow:0 0 22px 5px rgba(77,141,255,.6);
  animation:ldPulse 1.2s ease-in-out infinite;
}
@keyframes ldPulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(.55);opacity:.45}}
.ld-txt{font-size:11px; letter-spacing:.28em; color:#5F5F6C}
/* 首屏标题可读性（模型压在上面） */
.hero-copy::before{
  content:""; position:absolute; inset:-70px -90px; z-index:-1; pointer-events:none;
  background:radial-gradient(ellipse 62% 62% at 50% 50%, rgba(5,5,7,.78), rgba(5,5,7,.25) 55%, transparent 78%);
  filter:blur(24px);
}
.hero-title{
  text-shadow:0 2px 26px rgba(0,0,0,.92), 0 0 70px rgba(0,0,0,.7);
}
.hero-title em{ filter:drop-shadow(0 2px 24px rgba(0,0,0,.9)); }
/* ===== 开场：文字在模型落位后才浮现 ===== */
.hero-copy, .hero-meta, .hero-actions{
  opacity:0; transform:translateY(30px);
  transition:opacity .95s var(--ease), transform .95s var(--ease);
}
.hero-ready .hero-copy{ opacity:1; transform:none; transition-delay:.05s; }
.hero-ready .hero-meta{ opacity:1; transform:none; transition-delay:.28s; }
.hero-ready .hero-actions{ opacity:1; transform:none; transition-delay:.46s; }

/* ===== 极简加载线 ===== */
#preloader{
  position:fixed; inset:0; z-index:999; background:#040406;
  display:flex; align-items:center; justify-content:center;
  transition:opacity .55s var(--ease), visibility .55s;
}
#preloader.done{opacity:0; visibility:hidden}
.pre-line{
  width:190px; height:1px; background:rgba(255,255,255,.10);
  overflow:hidden;
}
.pre-line i{
  display:block; height:100%; width:0;
  background:linear-gradient(90deg, var(--blue), var(--amber));
  transition:width .28s linear;
  box-shadow:0 0 12px rgba(77,141,255,.8);
}
/* ===== 邮箱列表 ===== */
.mail-list{display:flex; flex-direction:column; gap:10px; margin-top:26px}
.mail-item{
  display:flex; align-items:baseline; gap:10px; flex-wrap:wrap;
  padding:12px 18px; border:1px solid var(--line); border-radius:10px;
  background:rgba(255,255,255,.025); transition:.28s; text-align:left;
}
.mail-item:hover{border-color:rgba(77,141,255,.55); background:rgba(77,141,255,.08); transform:translateY(-1px)}
.mi-label{
  font-size:11px; letter-spacing:.1em; color:#8A8A96;
  border:1px solid rgba(255,255,255,.14); border-radius:4px; padding:1px 7px;
  flex:0 0 auto;
}
.mi-addr{font-family:var(--ff-en); font-size:14px; color:#E4E9FF; letter-spacing:.01em}
.mi-note{flex:1 0 100%; font-size:11.5px; color:#6B6B78; margin-top:2px}

.mail-list.compact{gap:6px; margin-top:10px}
.mail-list.compact .mail-item{
  padding:5px 12px; border-radius:6px; background:transparent; border-color:transparent;
  gap:8px;
}
.mail-list.compact .mail-item:hover{background:rgba(77,141,255,.08); border-color:rgba(77,141,255,.25); transform:none}
.mail-list.compact .mi-label{font-size:10px; padding:0 6px; border:none; background:rgba(255,255,255,.06)}
.mail-list.compact .mi-addr{font-size:12.5px; color:#9AA3B8}

/* ===== 页脚 ===== */
.site-foot{align-items:flex-start; gap:34px}
.foot-slogan{margin-top:6px; font-size:11.5px; color:#4E4E5A; letter-spacing:.06em}
.foot-mail-title{font-size:11px; letter-spacing:.24em; color:#5F5F6C; margin-bottom:2px}
.foot-right{flex:0 1 auto; min-width:260px}

/* ===== 关于本网站 · 跳转卡 ===== */
.jump-card{
  max-width:760px; margin:0 auto; text-align:center;
  border:1px solid rgba(77,141,255,.28); border-radius:16px;
  padding:clamp(38px,6vw,64px) clamp(24px,5vw,56px);
  background:
    radial-gradient(ellipse 80% 90% at 50% 0%, rgba(77,141,255,.14), transparent 68%),
    #07070b;
  position:relative; overflow:hidden;
}
.jump-no{
  font-size:26px; color:var(--blue); margin-bottom:10px;
  text-shadow:0 0 24px rgba(77,141,255,.7);
}
.jump-card h2{font-size:clamp(22px,3.2vw,38px); font-weight:800; letter-spacing:-.01em}
.jump-card p{margin-top:14px; color:var(--muted); font-size:14px}
.jump-url{
  display:block; width:fit-content; max-width:100%;
  margin:24px auto 0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
  padding:9px 18px; border-radius:99px;
  border:1px solid var(--line); background:rgba(255,255,255,.03);
  font-family:var(--ff-en); font-size:13px; color:#9AA3B8;
}
.jump-btn{display:inline-block; margin-top:24px}
.jump-count{margin-top:20px; font-size:12px; color:#5F5F6C; letter-spacing:.06em}
.jump-cancel{
  margin-left:10px; background:none; border:none; color:#7F8AA8; cursor:pointer;
  font-size:12px; text-decoration:underline; font-family:var(--ff); padding:0;
}
.jump-cancel:hover{color:var(--blue)}

@media (max-width:860px){
  .site-foot{flex-direction:column}
  .foot-right{min-width:0; width:100%}
  .mail-list{margin-top:18px}
}
/* 关于本网站 */
.site-desc{max-width:760px}
.site-desc p{color:#9C9CA8; font-size:14.5px; line-height:2; margin-bottom:16px}
.site-stack{grid-template-columns:repeat(4,1fr)}
@media (max-width:860px){ .site-stack{grid-template-columns:repeat(2,1fr)} }
/* ===== 多个跳转卡片（覆盖旧的单卡样式） ===== */
.jump-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:18px; max-width:1100px; margin:0 auto;
}
.jump-card{
  max-width:none; margin:0; text-align:left; display:flex; flex-direction:column;
  padding:clamp(26px,3.2vw,38px); border-radius:14px;
  transition:transform .35s var(--ease), border-color .3s, box-shadow .3s, background .3s;
}
.jump-card:hover{
  transform:translateY(-4px);
  border-color:rgba(77,141,255,.6);
  box-shadow:0 16px 52px rgba(77,141,255,.18);
}
.jump-card .jump-no{margin-bottom:12px; font-size:22px}
.jump-card h3{font-size:clamp(18px,2.1vw,24px); font-weight:800; letter-spacing:-.01em; color:var(--ink)}
.jump-card p{margin-top:10px; color:var(--muted); font-size:13.5px; line-height:1.8}
.jump-card .jump-url{margin:16px 0 0; font-size:12px; max-width:100%}
.jump-go{
  display:inline-block; margin-top:auto; padding-top:18px;
  color:var(--blue); font-size:13px; font-weight:700; letter-spacing:.06em;
}