/* Aivmelna GEO — 深色底 + 青/洋红霓虹线（取自 geo-aivmelna.png 品牌图） */
:root{
  --bg:#0c1420; --bg2:#101b2b; --bg3:#15233a; --line:#1f3048; --line2:#2a3f5e;
  --ink:#eaf1f9; --ink2:#a3b3c8; --ink3:#6f819a;
  --cyan:#03d9f6; --cyan-d:#0ab3cc; --pink:#f32d89; --amber:#ffb020;
  --pill:#ffffff; --pill-ink:#0c1420;
  --r:12px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 var(--font);overflow-x:hidden}
a{color:var(--cyan)}
img{max-width:100%;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
@media (min-width:768px){.wrap{padding:0 28px}}

/* 顶栏 */
header.top{position:sticky;top:0;z-index:10;background:rgba(12,20,32,.88);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.brand img{width:34px;height:34px}
.brand small{font-weight:500;color:var(--ink3);font-size:14px}
nav{display:flex;align-items:center;gap:22px}
nav a{color:var(--ink2);text-decoration:none;font-size:15px}
nav a:hover{color:var(--ink)}
nav a.lang{border:1px solid var(--line2);border-radius:999px;padding:3px 12px;font-size:13px;color:var(--ink)}
@media (max-width:760px){nav a.sec{display:none}nav{gap:14px}}

/* 首屏 */
.hero{position:relative;padding:56px 0 64px;border-bottom:1px solid var(--line)}
.hero::before{content:"";position:absolute;inset:0;background:
  radial-gradient(600px 340px at 85% 30%,rgba(243,45,137,.10),transparent 70%),
  radial-gradient(560px 360px at 60% 60%,rgba(3,217,246,.08),transparent 70%);pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center}
.hero .mark{justify-self:center;width:min(360px,100%);height:auto;aspect-ratio:1}
.pilltag{display:inline-block;background:var(--pill);color:var(--pill-ink);font-weight:800;border-radius:999px;padding:4px 16px;font-size:15px;letter-spacing:.02em;margin-bottom:18px}
.hero h1{font-size:44px;line-height:1.22;margin:0 0 16px;font-weight:800;letter-spacing:-.01em}
.hero h1 .c{color:var(--cyan)}
.hero h1 .p{color:var(--pink)}
.hero p.lead{font-size:18px;color:var(--ink2);margin:0 0 30px;max-width:620px}
@media (max-width:860px){
  .hero{padding:28px 0 44px}
  .hero .wrap{grid-template-columns:1fr;gap:8px}
  .hero .mark{order:-1;width:120px;justify-self:start;margin-bottom:8px}
  .hero h1{font-size:30px}
  .hero p.lead{font-size:16px}
}
form.scan{display:flex;gap:10px;max-width:620px;padding:6px;background:var(--bg2);border:1px solid var(--line2);border-radius:16px}
form.scan:focus-within{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(3,217,246,.18)}
form.scan input{flex:1;min-width:0;height:50px;border:0;background:transparent;padding:0 12px;font:17px var(--font);color:var(--ink);outline:none}
form.scan input::placeholder{color:var(--ink3)}
form.scan button{height:50px;padding:0 24px;border:0;border-radius:12px;background:var(--pill);color:var(--pill-ink);font:800 17px var(--font);cursor:pointer;white-space:nowrap}
form.scan button:hover{background:#dff8fd}
form.scan button:disabled{opacity:.6;cursor:wait}
@media (max-width:420px){form.scan button{padding:0 16px;font-size:16px}}
.hint{font-size:14px;color:var(--ink3);margin-top:12px}
.err{color:#ff7fb4;font-size:15px;margin-top:10px;min-height:1.2em}

section{padding:72px 0}
section h2{font-size:30px;margin:0 0 8px;line-height:1.35}
section .sub{color:var(--ink2);margin:0 0 34px;max-width:760px}
@media (max-width:640px){section{padding:48px 0}section h2{font-size:24px}}
.rule{height:2px;width:56px;background:linear-gradient(90deg,var(--cyan),var(--pink));border-radius:2px;margin-bottom:18px}

.card{background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:28px}
@media (max-width:640px){.card{padding:20px}}

/* 结果 */
#result{padding:40px 16px 0;display:none;max-width:1120px;margin:0 auto}
@media (min-width:768px){#result{padding:48px 28px 0}}
.res-head{display:grid;grid-template-columns:190px 1fr;gap:36px;align-items:center}
@media (max-width:640px){.res-head{grid-template-columns:1fr;gap:18px}.res-head .ring{justify-self:center}.res-meta{text-align:center}.res-meta .dims{text-align:left}}
.ring{position:relative;width:176px;height:176px}
.ring svg{transform:rotate(-90deg)}
.ring .num{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.ring .num b{font-size:56px;line-height:1;font-family:var(--mono)}
.ring .num span{font-size:13px;color:var(--ink3);margin-top:6px}
.res-host{font-size:14px;color:var(--ink3);word-break:break-all}
.res-verdict{font-size:22px;font-weight:700;margin:4px 0 18px;line-height:1.45}
.dims{display:grid;gap:14px;width:100%}
.dim{display:grid;grid-template-columns:var(--dl,68px) 1fr 56px;gap:4px 14px;align-items:center;font-size:15px}
html[lang=en] .dim{--dl:100px}
.dim .bar{height:8px;background:var(--bg3);border-radius:4px;overflow:hidden}
.dim .bar i{display:block;height:100%;border-radius:4px;width:0;transition:width .8s ease}
.dim em{font-style:normal;font-family:var(--mono);color:var(--ink2);text-align:right}
.dim small{grid-column:2/4;color:var(--ink3);font-size:13px;line-height:1.4}
.stat{margin-top:24px;padding:14px 16px;background:var(--bg3);border-radius:var(--r);font-size:15px;color:var(--ink2);border-left:3px solid var(--cyan)}
.stat b{color:var(--ink);font-family:var(--mono)}
.issues{margin-top:28px}
.issues h3{font-size:18px;margin:0 0 14px}
.issue{border-left:3px solid var(--pink);padding:2px 0 2px 14px;margin:0 0 18px}
.issue b{display:block;font-size:16px;line-height:1.5}
.issue span{font-size:14px;color:var(--ink2)}
.issue .tag{display:inline-block;font-size:12px;color:var(--cyan);margin-right:8px;font-weight:600}
.more{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-top:8px;padding-top:20px;border-top:1px dashed var(--line2)}
.more p{margin:0;color:var(--ink2);font-size:15px}
.btn{display:inline-block;background:var(--pill);color:var(--pill-ink);text-decoration:none;padding:12px 22px;border-radius:999px;font-weight:800;font-size:15px;border:0;cursor:pointer;white-space:nowrap}
.btn:hover{background:#dff8fd}
.fail{color:var(--pink);font-weight:700}
.loading{display:flex;gap:14px;align-items:center;color:var(--ink2)}
.spin{flex:none;width:22px;height:22px;border:3px solid var(--line2);border-top-color:var(--cyan);border-right-color:var(--pink);border-radius:50%;animation:s 1s linear infinite}
@keyframes s{to{transform:rotate(360deg)}}

/* 三步 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:860px){.steps{grid-template-columns:1fr}}
.step{background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:26px}
.step h3{margin:2px 0 6px;font-size:21px}
.step .q{color:var(--cyan);font-weight:600;font-size:15px;margin:0 0 10px}
.step:nth-child(3) .q{color:var(--pink)}
.step p{margin:0;color:var(--ink2);font-size:15px}
.compare{margin-top:16px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:860px){.compare{grid-template-columns:1fr}}
.compare div{background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:22px 26px;font-size:15px;color:var(--ink2)}
.compare b{display:block;color:var(--ink);font-size:16px;margin-bottom:4px}

/* 报告 */
.products{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:860px){.products{grid-template-columns:1fr}}
.prod{background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:28px;border-top:3px solid var(--cyan)}
.prod.h{border-top-color:var(--pink)}
.prod h3{margin:0 0 4px;font-size:22px}
.prod .for{color:var(--ink3);font-size:14px;margin:0 0 16px}
.prod ul{margin:0;padding-left:20px;color:var(--ink2);font-size:15px}
.prod li{margin:6px 0}
.prod li::marker{color:var(--cyan)}
.prod.h li::marker{color:var(--pink)}

/* 套餐 */
#pricing{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:stretch}
@media (max-width:900px){.plans{grid-template-columns:1fr;max-width:520px}}
.plan{border:1px solid var(--line2);border-radius:16px;padding:28px;display:flex;flex-direction:column;background:var(--bg);position:relative}
.plan.pick{border:2px solid var(--cyan);box-shadow:0 0 0 1px rgba(3,217,246,.15),0 10px 40px rgba(3,217,246,.08)}
.plan .flag{position:absolute;top:-13px;left:24px;background:var(--pill);color:var(--pill-ink);font-size:13px;font-weight:800;padding:2px 12px;border-radius:999px}
.plan h3{margin:0;font-size:19px}
.plan .price{font-size:42px;font-weight:800;font-family:var(--mono);margin:12px 0 2px;line-height:1.1}
.plan .price small{font-size:18px;font-weight:500;margin-right:2px;color:var(--ink2)}
.plan .note{font-size:14px;color:var(--ink3);margin:0 0 18px;min-height:1.5em}
.plan.pick .note{color:var(--cyan)}
.plan ul{list-style:none;padding:0;margin:0 0 24px;font-size:15px;color:var(--ink2);flex:1}
.plan li{padding:8px 0 8px 24px;border-top:1px solid var(--line);position:relative}
.plan li::before{content:"";position:absolute;left:4px;top:16px;width:9px;height:5px;border-left:2px solid var(--cyan);border-bottom:2px solid var(--cyan);transform:rotate(-45deg)}
.plan button{width:100%;padding:13px;border-radius:999px;font:700 15px var(--font);border:1px solid var(--line2);background:var(--bg3);color:var(--ink3);cursor:not-allowed}
.soon{color:var(--ink3);font-size:14px;margin-top:22px}
.deliver{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px}
@media (max-width:760px){.deliver{grid-template-columns:1fr 1fr}}
.deliver div{font-size:14px;color:var(--ink2);border-left:2px solid var(--line2);padding-left:12px}
.deliver b{display:block;font-size:17px;color:var(--ink)}

/* FAQ */
.faq details,.faq h2{max-width:860px}
details{background:var(--bg2);border:1px solid var(--line);border-radius:14px;padding:0 20px;margin-bottom:10px}
details[open]{border-color:var(--line2)}
summary{cursor:pointer;padding:16px 28px 16px 0;font-weight:600;list-style:none;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:0;top:14px;color:var(--cyan);font-weight:400;font-size:20px}
details[open] summary::after{content:"−"}
details p{margin:0 0 16px;color:var(--ink2);font-size:15px}

/* 联系 */
.contact{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.contact p{margin:0;color:var(--ink2)}
.contact a.btn{font-size:16px}

footer{padding:32px 0 44px;color:var(--ink3);font-size:14px;border-top:1px solid var(--line)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
footer a{color:var(--ink2)}